/* roulang page: index */
:root{
  --ink:#0C0F0D;
  --green:#0E3B2E;
  --lime:#D8FF3E;
  --bone:#F4F1E9;
  --paper:#E9E5D9;
  --muted:#5F655B;
  --line:#D5D1C4;
  --clay:#C65A32;
  --serif:"Noto Serif SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --radius:4px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bone);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.78;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 48px}
@media (max-width:1024px){.container{padding:0 32px}}
@media (max-width:640px){.container{padding:0 20px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(244,241,233,.94);
  backdrop-filter:saturate(120%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 1px 0 rgba(12,15,13,.06),0 10px 30px rgba(12,15,13,.05)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;height:88px;transition:height .25s var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;flex-direction:column;line-height:1.06;flex:0 0 auto}
.brand .b1{font-family:var(--serif);font-weight:900;font-size:17px;letter-spacing:.02em;color:var(--ink)}
.brand .b2{font-family:var(--sans);font-weight:300;font-size:12px;letter-spacing:.34em;color:var(--green);margin-top:3px}
.main-nav{display:flex;align-items:center;gap:30px}
.main-nav a{position:relative;font-size:13.5px;letter-spacing:.05em;color:rgba(12,15,13,.7);padding:6px 0;transition:color .2s var(--ease);white-space:nowrap}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink);font-weight:500}
.main-nav a.active::before{
  content:"";position:absolute;left:50%;bottom:-10px;width:5px;height:5px;border-radius:50%;
  background:var(--lime);box-shadow:0 0 0 1px rgba(12,15,13,.35);transform:translateX(-50%);
}
.header-cta{flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:44px;padding:0 24px;border-radius:999px;border:1px solid transparent;
  font-size:14px;letter-spacing:.05em;font-weight:500;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .12s var(--ease);
}
.btn-primary{background:var(--ink);color:var(--bone)}
.btn-primary:hover{background:var(--lime);color:var(--ink);border-color:var(--ink)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--bone)}
.btn:active{transform:scale(.98)}
.btn:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
.btn-sm{min-height:40px;padding:0 20px;font-size:13px}
.btn-invert{background:var(--bone);color:var(--ink)}
.btn-invert:hover{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-outline-light{border-color:rgba(244,241,233,.45);color:var(--bone);background:transparent}
.btn-outline-light:hover{background:var(--bone);color:var(--ink);border-color:var(--bone)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:13.5px;letter-spacing:.04em;
  border-bottom:1px solid var(--ink);padding-bottom:3px;transition:border-color .2s var(--ease),color .2s var(--ease);
}
.text-link:hover{border-color:var(--lime);color:var(--green)}
.nav-toggle{
  display:none;align-items:center;gap:8px;min-height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;font-size:13px;letter-spacing:.08em;
}
.nav-toggle .nt-dot{width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 1px rgba(12,15,13,.3)}
.nav-toggle:focus-visible{outline:2px solid var(--lime);outline-offset:3px}

/* drawer */
.nav-drawer{
  position:fixed;inset:0;z-index:120;background:var(--bone);
  display:flex;flex-direction:column;padding:24px 24px 32px;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .34s var(--ease),opacity .28s var(--ease),visibility .34s;
}
.nav-drawer.open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);border-radius:50%;font-size:20px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;margin-top:16px}
.drawer-nav a{
  display:flex;align-items:baseline;gap:14px;padding:18px 0;
  font-family:var(--serif);font-size:28px;font-weight:700;border-bottom:1px solid var(--line);
}
.drawer-nav a .num{font-family:var(--mono);font-size:12px;color:var(--green);letter-spacing:.1em}
.drawer-nav a.active{color:var(--green)}
.drawer-cta{margin-top:auto;width:100%}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::before,.hero::after{
  content:"";position:absolute;background:rgba(12,15,13,.07);pointer-events:none;
}
.hero::before{left:0;right:0;top:38%;height:1px}
.hero::after{top:0;bottom:0;left:62%;width:1px}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding:84px 0 92px}
.kicker{font-family:var(--mono);font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--green)}
.hero-h1{
  font-family:var(--serif);font-weight:900;
  font-size:clamp(3rem,6.6vw,5.6rem);line-height:1.05;letter-spacing:.01em;margin-top:16px;
}
.hero-h1 .line1{display:block}
.hero-h1 .line2{
  display:block;font-family:var(--sans);font-weight:300;letter-spacing:.18em;
  font-size:.56em;color:var(--green);margin-top:.18em;
}
.hero-sub{margin-top:26px;max-width:44ch;font-size:16.5px;color:var(--muted);line-height:1.85}
.hero-meta{display:flex;flex-wrap:wrap;gap:34px;margin-top:34px;padding-top:22px;border-top:1px solid var(--line)}
.hero-meta .mi{display:flex;flex-direction:column;gap:5px}
.hero-meta .mk{font-size:11.5px;letter-spacing:.14em;color:var(--muted)}
.hero-meta .mv{font-family:var(--mono);font-size:14px;color:var(--ink);font-variant-numeric:tabular-nums}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero-copy > *{opacity:0;transform:translateY(16px);animation:heroIn .62s var(--ease) forwards}
.hero-copy > *:nth-child(1){animation-delay:.04s}
.hero-copy > *:nth-child(2){animation-delay:.1s}
.hero-copy > *:nth-child(3){animation-delay:.16s}
.hero-copy > *:nth-child(4){animation-delay:.22s}
.hero-copy > *:nth-child(5){animation-delay:.28s}
@keyframes heroIn{to{opacity:1;transform:none}}

.hero-visual{position:relative;display:flex;align-items:center;justify-content:center;min-height:540px}
.hero-back{
  position:absolute;inset:-24px -12px;border-radius:var(--radius);
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.22;
}
.device-frame{
  position:relative;width:300px;aspect-ratio:9/19.5;border-radius:30px;overflow:hidden;
  border:1px solid rgba(12,15,13,.16);background:var(--paper);
  box-shadow:0 30px 80px rgba(12,15,13,.18);
}
.device-frame img{width:100%;height:100%;object-fit:cover}
.score-panel{
  position:absolute;left:-6px;bottom:24px;width:200px;padding:16px 18px;
  background:var(--bone);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:0 10px 30px rgba(12,15,13,.08);
}
.score-panel .sp-title{font-size:11px;letter-spacing:.18em;color:var(--muted);font-family:var(--mono)}
.score-panel .sp-row{display:flex;align-items:baseline;justify-content:space-between;padding:9px 0;border-bottom:1px dashed var(--line);font-size:13px}
.score-panel .sp-row:last-child{border-bottom:0;padding-bottom:0}
.score-panel .sp-row b{font-family:var(--mono);font-size:15px;font-weight:600;color:var(--green)}

/* ---------- sections ---------- */
.section{padding:116px 0}
.section + .section{border-top:1px solid var(--line)}
@media (max-width:1024px){.section{padding:80px 0}}
@media (max-width:640px){.section{padding:58px 0}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:52px}
.sec-head h2{font-family:var(--serif);font-weight:700;font-size:clamp(1.75rem,3.2vw,2.85rem);line-height:1.16}
.sec-desc{max-width:40ch;font-size:14px;color:var(--muted);line-height:1.8}
@media (max-width:768px){
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:36px}
}

/* value grid */
.value-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.value-item{padding:6px 30px;border-left:1px solid var(--line)}
.value-item:first-child{border-left:0;padding-left:0}
.value-item:last-child{padding-right:0}
.value-num{font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--green)}
.value-item h3{font-size:17px;font-weight:600;margin-top:16px;line-height:1.5}
.value-item p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.8}
@media (max-width:1024px){
  .value-grid{grid-template-columns:repeat(2,1fr);gap:36px 0}
  .value-item:nth-child(3){border-left:0;padding-left:0}
}
@media (max-width:560px){
  .value-grid{grid-template-columns:1fr}
  .value-item{border-left:0;padding:0 0 22px}
  .value-item:not(:last-child){border-bottom:1px solid var(--line);margin-bottom:22px}
}

/* carousel */
.shots{display:grid;grid-template-columns:280px 1fr;gap:56px;align-items:start}
.shots-side{position:sticky;top:110px}
.shots-side .kicker{margin-bottom:14px}
.shots-side h2{font-family:var(--serif);font-weight:700;font-size:clamp(1.6rem,2.6vw,2.4rem);line-height:1.2}
.shots-side p{margin-top:16px;font-size:14.5px;color:var(--muted);line-height:1.85;max-width:30ch}
.shots-arrows{display:flex;gap:12px;margin-top:28px}
.arrow-btn{
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;transition:all .22s var(--ease);
}
.arrow-btn:hover{background:var(--lime);border-color:var(--ink)}
.arrow-btn:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
.shot-track{
  display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:20px;scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none}
.shot-card{flex:0 0 330px;scroll-snap-align:start}
.shot-device{
  width:100%;aspect-ratio:9/17;border-radius:22px;overflow:hidden;
  border:1px solid var(--line);background:var(--paper);
}
.shot-device img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.shot-card:hover .shot-device img{transform:scale(1.03)}
.shot-cap{display:flex;align-items:center;gap:12px;margin-top:14px}
.shot-cap .n{font-family:var(--mono);font-size:12px;color:var(--green)}
.shot-cap span.t{font-size:14px;color:var(--ink)}
.shot-bar{height:2px;background:var(--line);margin-top:22px;overflow:hidden}
.shot-bar i{display:block;height:100%;width:22%;background:var(--green);transition:width .3s var(--ease)}
@media (max-width:1024px){
  .shots{grid-template-columns:1fr;gap:32px}
  .shots-side{position:static}
  .shots-arrows{display:none}
}
@media (max-width:520px){.shot-card{flex:0 0 85vw}}

/* spec table */
.spec-wrap{overflow-x:auto;border-top:1px solid var(--line)}
.spec-table{width:100%;border-collapse:collapse;min-width:640px}
.spec-table th,.spec-table td{padding:20px 22px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px;vertical-align:top}
.spec-table thead th{font-size:12px;letter-spacing:.16em;color:var(--muted);font-weight:500;padding-top:22px}
.spec-table tbody th{font-weight:500;color:var(--ink);background:var(--bone);position:sticky;left:0;min-width:130px}
.spec-table td{color:var(--muted);font-family:var(--mono);font-variant-numeric:tabular-nums}
.spec-note{margin-top:16px;font-size:12.5px;color:var(--muted);letter-spacing:.04em}

/* feedback dark */
.dark-block{background:var(--green);color:var(--bone);border-top:0}
.dark-block .sec-head{border-color:rgba(244,241,233,.22)}
.dark-block .sec-head h2{color:var(--bone)}
.dark-block .sec-desc{color:rgba(244,241,233,.7)}
.fb-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.fb-card{
  border:1px solid rgba(244,241,233,.24);border-radius:var(--radius);padding:28px;
  transition:border-color .22s var(--ease),transform .3s var(--ease);
}
.fb-card:nth-child(2){transform:translateY(28px)}
.fb-card:hover{border-color:rgba(244,241,233,.55)}
.fb-quote{font-family:var(--serif);font-size:34px;line-height:1;color:var(--lime);margin-bottom:14px}
.fb-card p{font-size:15.5px;line-height:1.85;color:rgba(244,241,233,.92);max-width:44ch}
.fb-foot{display:flex;align-items:center;gap:12px;margin-top:24px;padding-top:18px;border-top:1px solid rgba(244,241,233,.16)}
.fb-avatar{
  width:34px;height:34px;border-radius:2px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(244,241,233,.35);font-family:var(--serif);font-size:15px;color:var(--bone);
}
.fb-tag{font-size:11.5px;letter-spacing:.14em;padding:4px 10px;border-radius:999px;border:1px solid rgba(216,255,62,.5);color:var(--lime)}
.fb-date{margin-left:auto;font-family:var(--mono);font-size:12px;color:rgba(244,241,233,.6)}
@media (max-width:768px){
  .fb-grid{grid-template-columns:1fr}
  .fb-card:nth-child(2){transform:none}
}

/* download */
.dl-block{
  position:relative;overflow:hidden;background:var(--green);color:var(--bone);
  border-radius:var(--radius);padding:64px;
  background-image:linear-gradient(100deg,rgba(14,59,46,.97) 40%,rgba(14,59,46,.72) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.dl-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;position:relative}
.dl-block h2{font-family:var(--serif);font-weight:900;font-size:clamp(2rem,3.6vw,3.1rem);line-height:1.14}
.dl-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:24px}
.dl-meta .dm{display:flex;flex-direction:column;gap:4px}
.dl-meta .dm span:first-child{font-size:11.5px;letter-spacing:.16em;color:rgba(244,241,233,.6)}
.dl-meta .dm span:last-child{font-family:var(--mono);font-size:14px}
.dl-note{margin-top:26px;font-size:12.5px;color:rgba(244,241,233,.65);max-width:46ch;line-height:1.8}
.dl-right{display:flex;flex-direction:column;gap:18px}
.qr-box{
  width:112px;height:112px;border:1px solid rgba(244,241,233,.4);border-radius:2px;
  background:
    repeating-linear-gradient(90deg,rgba(244,241,233,.85) 0 4px,transparent 4px 8px),
    repeating-linear-gradient(0deg,rgba(244,241,233,.85) 0 4px,transparent 4px 8px);
  background-blend-mode:multiply;opacity:.55;
}
.qr-cap{font-size:12px;letter-spacing:.14em;color:rgba(244,241,233,.7);margin-top:-6px}
.plat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.plat-btn{
  border:1px solid rgba(244,241,233,.35);border-radius:2px;padding:16px 14px;min-height:96px;
  display:flex;flex-direction:column;justify-content:space-between;gap:10px;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.plat-btn:hover{background:var(--bone);color:var(--ink);border-color:var(--bone)}
.plat-btn .pn{font-size:14px;font-weight:600;letter-spacing:.04em}
.plat-btn .pv{font-family:var(--mono);font-size:11.5px;opacity:.75;line-height:1.6}
.plat-btn .pa{align-self:flex-end;font-size:14px;transition:transform .22s var(--ease)}
.plat-btn:hover .pa{transform:translateX(4px)}
@media (max-width:1024px){
  .dl-block{padding:44px 32px}
  .dl-grid{grid-template-columns:1fr;gap:36px}
}
@media (max-width:520px){
  .dl-block{padding:34px 22px}
  .plat-grid{grid-template-columns:1fr}
  .plat-btn{flex-direction:row;align-items:center;min-height:60px}
  .plat-btn .pa{align-self:center}
}

/* news */
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}
.feature-card{display:block;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:rgba(255,255,255,.25);transition:border-color .22s var(--ease)}
.feature-card:hover{border-color:var(--ink)}
.feature-media{aspect-ratio:16/9;overflow:hidden;background:var(--paper)}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.feature-card:hover .feature-media img{transform:scale(1.03)}
.feature-body{padding:26px 28px 28px}
.tag{
  display:inline-block;font-size:11.5px;letter-spacing:.14em;padding:4px 10px;
  border:1px solid var(--line);border-radius:999px;color:var(--green);background:rgba(216,255,62,.16);
}
.tag-sm{font-size:11px;padding:3px 9px}
.feature-body h3{font-size:21px;font-weight:600;line-height:1.5;margin-top:14px}
.feature-body p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feature-meta{display:flex;align-items:center;justify-content:space-between;margin-top:20px;padding-top:16px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}
.feature-meta .arrow{transition:transform .22s var(--ease)}
.feature-card:hover .feature-meta .arrow{transform:translateX(4px)}
.news-list li{border-bottom:1px solid var(--line)}
.news-list li:first-child{border-top:1px solid var(--line)}
.news-list a{display:block;position:relative;padding:22px 34px 22px 0;transition:padding-left .24s var(--ease)}
.news-list a:hover{padding-left:8px}
.nl-top{display:flex;align-items:center;gap:12px}
.nl-date{font-size:12px;color:var(--muted);margin-left:auto}
.news-list h3{font-size:16px;font-weight:600;line-height:1.55;margin-top:10px}
.news-list p{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.nl-arrow{position:absolute;right:0;top:50%;transform:translateY(-50%);color:var(--muted);transition:transform .22s var(--ease),color .22s var(--ease)}
.news-list a:hover .nl-arrow{transform:translate(4px,-50%);color:var(--ink)}
.empty-state{
  border:1px solid var(--line);border-radius:var(--radius);padding:56px 32px;text-align:center;
}
.empty-mark{display:inline-block;width:36px;height:36px;border:1px solid var(--line);border-radius:50%;line-height:34px;color:var(--muted);margin-bottom:16px}
.empty-state p{font-size:15px;color:var(--muted)}
.empty-state .text-link{margin-top:18px}
@media (max-width:1024px){.news-grid{grid-template-columns:1fr;gap:32px}}

/* faq */
.faq-grid{display:grid;grid-template-columns:280px 1fr;gap:56px;align-items:start}
.faq-side{position:sticky;top:110px}
.faq-side h2{font-family:var(--serif);font-weight:700;font-size:clamp(1.6rem,2.6vw,2.4rem);line-height:1.2}
.faq-side p{margin-top:14px;font-size:14.5px;color:var(--muted);line-height:1.8;max-width:28ch}
.faq-side .text-link{margin-top:20px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%;
  padding:22px 0;text-align:left;font-size:18px;font-weight:600;line-height:1.5;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--green)}
.faq-q:focus-visible{outline:2px solid var(--lime);outline-offset:4px}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .26s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);left:50%;top:50%;
}
.faq-icon::before{width:14px;height:1px;transform:translate(-50%,-50%)}
.faq-icon::after{width:1px;height:14px;transform:translate(-50%,-50%)}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a p{max-width:68ch;font-size:15.5px;color:var(--muted);line-height:1.9;padding:0 0 24px}
@media (max-width:1024px){.faq-grid{grid-template-columns:1fr;gap:32px}.faq-side{position:static}}

/* footer */
.site-footer{background:var(--ink);color:var(--bone);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:5fr 3fr 4fr;gap:48px}
.f-brand .b1{font-family:var(--serif);font-weight:900;font-size:22px;letter-spacing:.02em}
.f-brand .b2{font-size:12.5px;font-weight:300;letter-spacing:.32em;color:rgba(244,241,233,.6);margin-top:6px}
.f-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.f-tags span{font-size:11.5px;letter-spacing:.12em;padding:5px 11px;border:1px solid rgba(244,241,233,.24);border-radius:999px;color:rgba(244,241,233,.8)}
.f-col-title{font-size:11.5px;letter-spacing:.2em;color:rgba(244,241,233,.5);margin-bottom:18px}
.f-links{display:flex;flex-direction:column;gap:11px}
.f-links a{font-size:13.5px;color:rgba(244,241,233,.82);transition:color .2s var(--ease)}
.f-links a:hover{color:var(--lime)}
.f-contact{font-size:13.5px;color:rgba(244,241,233,.82);line-height:2}
.f-qr{display:flex;align-items:center;gap:14px;margin-top:20px}
.f-qr .qr-mini{
  width:72px;height:72px;border:1px solid rgba(244,241,233,.35);border-radius:2px;
  background:
    repeating-linear-gradient(90deg,rgba(244,241,233,.7) 0 3px,transparent 3px 6px),
    repeating-linear-gradient(0deg,rgba(244,241,233,.7) 0 3px,transparent 3px 6px);
  opacity:.5;
}
.f-qr span{font-size:12px;color:rgba(244,241,233,.6);line-height:1.8}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(244,241,233,.16);
  font-size:12.5px;color:rgba(244,241,233,.55);
}
.footer-bottom .fb-links{display:flex;gap:20px}
.footer-bottom a:hover{color:var(--lime)}
@media (max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px}.f-brand{grid-column:1/-1}}
@media (max-width:640px){
  .site-footer{padding:52px 0 90px}
  .footer-grid{grid-template-columns:1fr}
}

/* mobile download bar */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;height:64px;
  background:var(--ink);color:var(--bone);display:none;align-items:center;justify-content:space-between;
  padding:0 18px;box-shadow:0 -8px 30px rgba(12,15,13,.12);
}
.mobile-bar .mb-info{display:flex;flex-direction:column;line-height:1.35}
.mobile-bar .mb-info b{font-size:13px;font-weight:600}
.mobile-bar .mb-info span{font-family:var(--mono);font-size:11px;color:rgba(244,241,233,.6)}
.mobile-bar .btn{min-height:40px;padding:0 18px;font-size:13px}
@media (max-width:1023px){.mobile-bar{display:flex}}

/* reveal */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .hero-copy > *{opacity:1;transform:none}
}

/* responsive hero */
@media (max-width:1024px){
  .main-nav{display:none}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:44px;padding:56px 0 68px}
  .hero-visual{min-height:auto;padding:12px 0 8px}
  .device-frame{width:70%;max-width:280px}
  .score-panel{left:0;bottom:0;width:180px}
  .hero::after{display:none}
}
@media (max-width:520px){
  .hero-h1{font-size:2.6rem}
  .hero-meta{gap:22px}
  .hero-actions .btn{width:100%}
  .score-panel{position:relative;left:auto;bottom:auto;margin-top:18px;width:100%}
  .device-frame{width:78%}
}

/* roulang page: article */
:root{
  --ink:#0C0F0D;
  --deep:#0E3B2E;
  --lime:#D8FF3E;
  --bone:#F4F1E9;
  --paper:#E9E5D9;
  --gray:#5F655B;
  --line:#D5D1C4;
  --clay:#C65A32;
  --serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --r-card:4px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0 0 64px;
  background:var(--bone);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
::selection{background:var(--lime);color:var(--ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px}

.container{width:100%;max-width:1280px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px}}
@media(min-width:1280px){.container{padding-left:48px;padding-right:48px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,241,233,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.shrink{box-shadow:0 1px 0 rgba(12,15,13,.06)}
.hdr{display:flex;align-items:center;justify-content:space-between;gap:20px;height:80px;transition:height .25s var(--ease)}
.site-header.shrink .hdr{height:64px}
.brand{display:flex;flex-direction:column;line-height:1.12;flex-shrink:0}
.brand-line1{font-family:var(--serif);font-weight:900;font-size:19px;letter-spacing:.02em;color:var(--ink)}
.brand-line2{font-size:10px;font-weight:500;letter-spacing:.34em;color:var(--gray);margin-top:3px}
@media(min-width:1024px){
  .brand-line1{font-size:20px}
  .brand-line2{font-size:11px;letter-spacing:.36em}
}
.main-nav{display:none;align-items:center;gap:30px}
@media(min-width:1024px){.main-nav{display:flex}}
.main-nav a{
  position:relative;font-size:14px;letter-spacing:.05em;color:rgba(12,15,13,.7);
  padding:8px 0;transition:color .2s var(--ease);white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink);font-weight:600}
.main-nav a.active::before{
  content:"";position:absolute;left:50%;bottom:-8px;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--lime);
  box-shadow:0 0 0 1px rgba(12,15,13,.22);
}
.hdr-right{display:flex;align-items:center;gap:12px}
.btn-pill{
  display:none;align-items:center;justify-content:center;height:40px;padding:0 22px;
  border-radius:999px;background:var(--ink);color:var(--bone);
  font-size:13px;letter-spacing:.06em;border:1px solid var(--ink);
  transition:background .22s var(--ease),color .22s var(--ease),transform .18s var(--ease);
}
.btn-pill:hover{background:var(--lime);color:var(--ink);border-color:var(--ink)}
.btn-pill:active{transform:scale(.98)}
@media(min-width:1024px){.btn-pill{display:inline-flex}}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 11px;background:transparent;border:1px solid var(--line);border-radius:999px;
  transition:border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--ink)}
.nav-toggle span{display:block;height:1.5px;background:var(--ink);border-radius:2px;transition:transform .25s var(--ease),opacity .2s var(--ease)}
.nav-toggle span:last-child{width:60%}
@media(min-width:1024px){.nav-toggle{display:none}}

/* ---------- Drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--bone);
  transform:translateY(-101%);transition:transform .38s var(--ease);
  display:flex;flex-direction:column;padding:24px 24px 40px;overflow-y:auto;
}
.drawer.open{transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:24px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:999px;background:transparent;
  font-size:18px;line-height:1;color:var(--ink);
}
.drawer-close:hover{border-color:var(--ink)}
.drawer-inner{display:flex;flex-direction:column;padding-top:16px}
.drawer-inner a.dl{
  display:flex;align-items:baseline;gap:16px;
  font-family:var(--serif);font-weight:700;font-size:clamp(22px,6vw,30px);
  padding:16px 0;border-bottom:1px solid var(--line);color:var(--ink);
}
.drawer-inner a.dl .idx{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--gray);min-width:26px}
.drawer-inner a.dl:hover{color:var(--deep)}
.drawer-btn{
  margin-top:28px;display:inline-flex;align-items:center;justify-content:center;
  height:52px;border-radius:999px;background:var(--ink);color:var(--bone);
  font-size:15px;letter-spacing:.08em;border:1px solid var(--ink);transition:all .22s var(--ease);
}
.drawer-btn:hover{background:var(--lime);color:var(--ink)}

/* ---------- Page top ---------- */
.page-top{padding-top:28px}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:12px;letter-spacing:.05em;color:var(--gray)}
.crumb a{transition:color .2s var(--ease)}
.crumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.crumb .sep{color:var(--line)}
.crumb-now{max-width:56vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom;color:rgba(12,15,13,.75)}
@media(max-width:640px){.crumb-now{max-width:44vw}}

.post-head{max-width:900px;padding-top:24px}
.post-cat{
  display:inline-flex;align-items:center;height:26px;padding:0 13px;border-radius:999px;
  border:1px solid rgba(14,59,46,.35);background:rgba(216,255,62,.2);
  font-size:12px;letter-spacing:.1em;color:var(--deep);
}
.post-title{
  font-family:var(--serif);font-weight:900;
  font-size:clamp(1.8rem,4.2vw,3rem);line-height:1.24;letter-spacing:.005em;
  margin-top:18px;color:var(--ink);word-break:break-word;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:22px;
  font-size:12px;letter-spacing:.06em;color:var(--gray);font-family:var(--mono);
}
.post-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line)}
.post-rule{margin-top:26px;border:0;border-top:1px solid var(--line)}
.post-cover{
  margin-top:32px;max-width:900px;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;background:var(--paper);
}
.post-cover img{width:100%;height:clamp(180px,34vw,360px);object-fit:cover}

/* ---------- Layout ---------- */
.post-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:44px;padding:44px 0 0}
@media(min-width:1024px){.post-layout{grid-template-columns:minmax(0,1fr) 240px;gap:64px}}

.toc-mobile{border:1px solid var(--line);border-radius:var(--r-card);background:var(--paper);margin-bottom:36px}
.toc-mobile summary{
  list-style:none;cursor:pointer;padding:14px 18px;font-size:13px;letter-spacing:.14em;color:var(--gray);
  display:flex;align-items:center;justify-content:space-between;
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"+";font-size:16px;color:var(--ink);transition:transform .24s var(--ease)}
.toc-mobile[open] summary::after{transform:rotate(45deg)}
.toc-mobile .toc{padding:0 18px 16px}
@media(min-width:1024px){.toc-mobile{display:none}}

.side{display:none}
@media(min-width:1024px){
  .side{display:block;position:sticky;top:104px;align-self:start}
}
.side-title{font-size:11px;letter-spacing:.22em;color:var(--gray);margin-bottom:14px}
.toc a{
  display:block;position:relative;padding:7px 0 7px 15px;font-size:13px;line-height:1.6;
  color:var(--gray);border-left:1px solid var(--line);transition:color .2s var(--ease);
}
.toc a:hover{color:var(--ink)}
.toc a.toc-sub{padding-left:28px;font-size:12px}
.toc a.active{color:var(--ink);font-weight:600}
.toc a.active::before{
  content:"";position:absolute;left:-3px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--lime);
  box-shadow:0 0 0 1px var(--deep);
}
.related{border-top:1px solid var(--line);margin-top:30px;padding-top:20px}
.related a{
  display:block;padding:13px 0;font-size:13px;line-height:1.65;color:var(--ink);
  border-bottom:1px solid var(--line);transition:color .2s var(--ease);
}
.related a:hover{color:var(--deep)}
.related a span{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--gray);margin-bottom:4px}

/* ---------- Article body ---------- */
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:#23281f}
@media(min-width:768px){.article-body{font-size:18px}}
.article-body > * + *{margin-top:1.35em}
.article-body p{margin:0}
.article-body h2{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(1.5rem,2.8vw,1.95rem);line-height:1.35;
  margin-top:2.3em;color:var(--ink);scroll-margin-top:110px;
}
.article-body h2:first-child{margin-top:0}
.article-body h3{
  font-size:clamp(1.1rem,1.9vw,1.25rem);font-weight:600;line-height:1.5;
  margin-top:1.9em;color:var(--ink);scroll-margin-top:110px;
}
.article-body h4{font-size:1rem;font-weight:600;margin-top:1.6em;color:var(--ink)}
.article-body ul,.article-body ol{padding-left:1.35em}
.article-body li{margin:.45em 0}
.article-body li::marker{color:var(--deep)}
.article-body strong{font-weight:600;color:var(--ink)}
.article-body a{
  color:var(--deep);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
  transition:text-decoration-color .2s var(--ease);
}
.article-body a:hover{text-decoration-color:var(--lime)}
.article-body blockquote{
  margin:1.9em 0;padding:6px 0 6px 22px;border-left:2px solid var(--lime);
  color:var(--gray);font-family:var(--serif);font-size:1.05em;line-height:1.85;
}
.article-body blockquote p{margin:0}
.article-body img{border-radius:2px;margin:1.6em 0;border:1px solid var(--line)}
.article-body figure{margin:1.9em 0}
.article-body figcaption{font-size:12px;color:var(--gray);text-align:center;margin-top:10px;letter-spacing:.04em}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.article-body table{
  width:100%;border-collapse:collapse;font-size:14px;margin:1.9em 0;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 16px;text-align:left}
.article-body th{font-weight:600;color:var(--ink);background:var(--paper);font-size:13px;letter-spacing:.04em}
.article-body td{font-variant-numeric:tabular-nums}
.article-body code{
  font-family:var(--mono);font-size:.88em;background:var(--paper);
  padding:2px 6px;border-radius:2px;color:var(--deep);
}
.article-body pre{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);padding:18px;overflow-x:auto;font-size:14px}
.article-body pre code{background:none;padding:0}

/* ---------- Empty state ---------- */
.empty-box{
  max-width:760px;border:1px solid var(--line);border-radius:var(--r-card);
  background:#fbf9f3;padding:56px 28px;text-align:center;
}
.empty-ico{
  width:44px;height:44px;margin:0 auto 18px;border:1px solid var(--line);border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:var(--gray);font-size:18px;
}
.empty-box h2{font-family:var(--serif);font-size:1.4rem;font-weight:700;color:var(--ink)}
.empty-box p{margin-top:10px;color:var(--gray);font-size:14px}
.empty-box .back-home{
  display:inline-flex;align-items:center;gap:8px;margin-top:24px;height:44px;padding:0 24px;
  border-radius:999px;background:var(--ink);color:var(--bone);font-size:13px;letter-spacing:.06em;
  border:1px solid var(--ink);transition:all .22s var(--ease);
}
.empty-box .back-home:hover{background:var(--lime);color:var(--ink)}

/* ---------- Post nav ---------- */
.post-nav{display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;margin-top:64px;max-width:900px}
@media(min-width:640px){.post-nav{grid-template-columns:1fr 1fr}}
.post-nav-item{display:block;background:var(--bone);padding:24px;transition:background .22s var(--ease)}
.post-nav-item:hover{background:var(--paper)}
.post-nav-item .pn-label{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--gray);display:block}
.post-nav-item .pn-title{
  display:flex;align-items:center;gap:8px;margin-top:8px;
  font-size:15px;font-weight:500;color:var(--ink);line-height:1.55;
}
.post-nav-item .pn-title .arw{transition:transform .22s var(--ease);color:var(--deep)}
.post-nav-item:hover .pn-title .arw{transform:translateX(4px)}
.post-nav-item.pn-right{text-align:right}
.post-nav-item.pn-right .pn-title{justify-content:flex-end}

/* ---------- CTA band ---------- */
.cta-band{
  margin-top:56px;max-width:900px;border-radius:var(--r-card);
  background:var(--deep);color:var(--bone);
  padding:36px 28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;opacity:.14;
}
.cta-band-txt{position:relative;z-index:1;max-width:460px}
.cta-band h2{font-family:var(--serif);font-weight:700;font-size:clamp(1.25rem,2.4vw,1.6rem);line-height:1.4;color:var(--bone)}
.cta-band p{margin-top:10px;font-size:14px;line-height:1.8;color:rgba(244,241,233,.72)}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 26px;
  border-radius:999px;background:var(--lime);color:var(--ink);border:1px solid var(--lime);
  font-size:14px;letter-spacing:.06em;font-weight:500;
  transition:background .22s var(--ease),color .22s var(--ease),transform .18s var(--ease);
}
.btn-primary:hover{background:var(--bone);color:var(--ink);border-color:var(--bone)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 26px;
  border-radius:999px;background:transparent;color:var(--bone);border:1px solid rgba(244,241,233,.4);
  font-size:14px;letter-spacing:.06em;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .18s var(--ease);
}
.btn-ghost:hover{background:var(--bone);color:var(--ink);border-color:var(--bone)}
.btn-ghost:active{transform:scale(.98)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--bone);margin-top:96px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media(min-width:768px){.footer-grid{grid-template-columns:5fr 3fr 4fr;gap:48px}}
.f-brand .b1{font-family:var(--serif);font-weight:900;font-size:22px;letter-spacing:.02em;line-height:1.2}
.f-brand .b2{font-size:12px;letter-spacing:.34em;color:rgba(244,241,233,.58);margin-top:4px}
.f-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.f-tags span{
  font-size:11px;letter-spacing:.08em;padding:5px 13px;border-radius:999px;
  border:1px solid rgba(244,241,233,.22);color:rgba(244,241,233,.75);
}
.f-col-title{font-size:12px;letter-spacing:.18em;color:rgba(244,241,233,.45);margin-bottom:16px}
.f-links{display:flex;flex-direction:column;gap:11px}
.f-links a{font-size:14px;color:rgba(244,241,233,.82);transition:color .2s var(--ease);width:fit-content}
.f-links a:hover{color:var(--lime)}
.f-contact{font-size:13px;line-height:2;color:rgba(244,241,233,.7)}
.f-qr{display:flex;align-items:center;gap:14px;margin-top:22px}
.qr-mini{
  width:64px;height:64px;border:1px solid rgba(244,241,233,.28);border-radius:2px;flex-shrink:0;
  background:
    repeating-linear-gradient(90deg,rgba(244,241,233,.55) 0 3px,transparent 3px 8px),
    repeating-linear-gradient(0deg,rgba(244,241,233,.35) 0 3px,transparent 3px 8px);
  background-blend-mode:multiply;
}
.f-qr span{font-size:12px;line-height:1.7;color:rgba(244,241,233,.62)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  border-top:1px solid rgba(244,241,233,.14);margin-top:48px;padding:24px 0 28px;
  font-size:12px;letter-spacing:.03em;color:rgba(244,241,233,.52);
}
.fb-links{display:flex;gap:20px}
.fb-links a{transition:color .2s var(--ease)}
.fb-links a:hover{color:var(--lime)}

/* ---------- Mobile bottom bar ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;height:64px;
  background:var(--ink);color:var(--bone);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:0 16px;box-shadow:0 -8px 30px rgba(12,15,13,.1);
}
.mobile-bar .mb-info{display:flex;flex-direction:column;line-height:1.35;min-width:0}
.mobile-bar .mb-info strong{font-size:13px;font-weight:500;letter-spacing:.04em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mobile-bar .mb-info span{font-family:var(--mono);font-size:10px;letter-spacing:.08em;color:rgba(244,241,233,.55)}
.mb-btn{
  display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 20px;flex-shrink:0;
  border-radius:999px;background:var(--lime);color:var(--ink);font-size:13px;font-weight:500;
  border:1px solid var(--lime);transition:background .22s var(--ease),color .22s var(--ease);
}
.mb-btn:hover{background:var(--bone);color:var(--ink)}
@media(min-width:1024px){.mobile-bar{display:none}body{padding-bottom:0}}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#0C0F0D;
  --field:#0E3B2E;
  --lime:#D8FF3E;
  --bone:#F4F1E9;
  --paper:#E9E5D9;
  --card:#FBFAF5;
  --muted:#5F655B;
  --line:#D5D1C4;
  --clay:#C65A32;
  --serif:"Noto Serif SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --r-card:4px;
  --r-img:2px;
  --max:1280px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
.page{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bone);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
.page img{display:block;max-width:100%;height:auto}
.page a{color:inherit;text-decoration:none}
.page button{font-family:inherit}
.page ul,.page ol{margin:0;padding:0;list-style:none}
.page p{margin:0}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1024px){.container{padding:0 48px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,241,233,.96);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;height:80px;
  transition:height .24s var(--ease);
}
.site-header.scrolled .header-inner{height:64px}
.brand{display:flex;flex-direction:column;gap:2px;line-height:1.12;flex:0 0 auto}
.brand-l1{font-family:var(--serif);font-weight:700;font-size:18px;letter-spacing:.02em;color:var(--ink)}
.brand-l2{font-weight:300;font-size:11px;letter-spacing:.30em;color:var(--field)}
@media (max-width:1023px){
  .brand-l1{font-size:16px}
  .brand-l2{font-size:10px;letter-spacing:.26em}
}

.main-nav{display:none}
@media (min-width:1024px){
  .main-nav{display:flex;align-items:center;gap:30px}
}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:13.5px;
  letter-spacing:.05em;
  color:rgba(12,15,13,.68);
  transition:color .22s var(--ease);
  white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink);font-weight:500}
.main-nav a.active::before{
  content:"";position:absolute;left:50%;bottom:-9px;
  width:4px;height:4px;margin-left:-2px;border-radius:50%;
  background:var(--lime);box-shadow:0 0 0 1px rgba(12,15,13,.35);
}

.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:44px;height:44px;padding:0 14px;
  border:1px solid var(--ink);border-radius:999px;
  background:transparent;color:var(--ink);
  font-size:13px;letter-spacing:.06em;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.menu-toggle:hover{background:var(--ink);color:var(--bone)}
@media (min-width:1024px){.menu-toggle{display:none}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;
  border-radius:999px;border:1px solid transparent;
  font-size:14px;font-weight:500;letter-spacing:.03em;
  cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .18s var(--ease);
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--ink);color:var(--bone);border-color:var(--ink)}
.btn-primary:hover{background:var(--lime);color:var(--ink);border-color:var(--ink)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--bone)}
.btn-light{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-light:hover{background:var(--bone);border-color:var(--bone);color:var(--ink)}
.btn-outline-light{background:transparent;color:var(--bone);border-color:rgba(244,241,233,.55)}
.btn-outline-light:hover{background:var(--bone);color:var(--ink);border-color:var(--bone)}
.btn-sm{min-height:38px;padding:8px 18px;font-size:13px}
.page .btn:focus-visible,
.page .menu-toggle:focus-visible,
.page .main-nav a:focus-visible,
.page .drawer a:focus-visible,
.page summary:focus-visible,
.page .method-row:focus-visible{
  outline:2px solid var(--lime);outline-offset:3px;
}

/* ---------- page head ---------- */
.page-head{
  position:relative;overflow:hidden;
  padding:36px 0 48px;
  border-bottom:1px solid var(--line);
}
.page-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center right;
  opacity:.13;
  -webkit-mask-image:linear-gradient(100deg,transparent 32%,#000 100%);
  mask-image:linear-gradient(100deg,transparent 32%,#000 100%);
}
.page-head > .container{position:relative;z-index:1}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.05em;color:var(--muted);margin-bottom:26px;
}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .cur{color:var(--ink)}
.kicker{
  font-family:var(--mono);font-size:12px;letter-spacing:.24em;
  color:var(--field);margin-bottom:18px;
}
.page-title{
  font-family:var(--serif);font-weight:900;
  font-size:clamp(1.85rem,4.6vw,3.5rem);
  line-height:1.14;letter-spacing:.01em;
  margin:0 0 20px;
}
.page-title .pt-l1{display:block;color:var(--ink)}
.page-title .pt-l2{
  display:block;margin-top:6px;
  font-family:var(--sans);font-weight:300;
  font-size:clamp(1.1rem,2.4vw,1.9rem);
  letter-spacing:.14em;color:var(--field);
}
.page-lede{
  max-width:52ch;font-size:16px;line-height:1.8;color:var(--muted);
}
@media (max-width:767px){.page-lede{font-size:15px}}

/* ---------- sections ---------- */
.section{padding:64px 0 0}
@media (min-width:1024px){.section{padding:88px 0 0}}
.section-head{margin-bottom:36px}
.section-kicker{
  font-family:var(--mono);font-size:11px;letter-spacing:.24em;
  color:var(--muted);margin-bottom:12px;
}
.section-title{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(1.5rem,3vw,2.35rem);
  line-height:1.24;margin:0;
}
.section-note{margin-top:12px;font-size:15px;color:var(--muted);max-width:56ch}

/* alert band */
.alert-band{
  display:flex;align-items:flex-start;gap:12px;
  margin-top:32px;padding:14px 18px;
  border:1px solid rgba(198,90,50,.38);
  background:rgba(198,90,50,.07);
  border-radius:var(--r-card);
  font-size:14px;line-height:1.7;color:#7c3a23;
}
.alert-band .dot{
  flex:0 0 auto;width:7px;height:7px;margin-top:8px;border-radius:50%;
  background:var(--clay);
}

/* ---------- guide layout ---------- */
.guide-grid{display:grid;gap:40px}
@media (min-width:1024px){
  .guide-grid{grid-template-columns:minmax(0,1fr) 330px;gap:56px;align-items:start}
}

.steps{display:grid}
.step{
  display:grid;
  grid-template-columns:44px minmax(0,1fr);
  gap:20px;
  padding:30px 0;
  border-top:1px solid var(--line);
}
.step:first-child{border-top:0;padding-top:0}
.step-num{
  font-family:var(--mono);font-size:13px;letter-spacing:.06em;
  color:var(--muted);padding-top:6px;
}
.step-title{
  font-size:19px;font-weight:600;line-height:1.5;margin:0 0 10px;
}
.step-text{font-size:15px;line-height:1.85;color:var(--muted);max-width:60ch}

.mock{
  margin-top:18px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--card);
  overflow:hidden;
  max-width:520px;
}
.mock-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 16px;
  border-bottom:1px solid var(--line);
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted);
}
.mock-row{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:11px 16px;
  border-bottom:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.mock-row:last-child{border-bottom:0}
.mock-row .mr-key{color:var(--ink);font-weight:500}
.mock-flag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--field);
}
.mock-flag::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--lime);box-shadow:0 0 0 1px var(--field);
}
.mock-flag.pending{color:var(--muted)}
.mock-flag.pending::before{background:transparent;box-shadow:0 0 0 1px var(--line)}

.mock-thumb{margin-top:18px;max-width:520px}
.mock-thumb img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border:1px solid var(--line);border-radius:var(--r-img);
}
.mock-thumb figcaption{
  margin-top:8px;font-size:12px;letter-spacing:.04em;color:var(--muted);
}

/* aside */
.aside-card{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--card);
  padding:26px 24px;
}
@media (min-width:1024px){
  .aside-card{position:sticky;top:104px}
}
.aside-title{
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;
  color:var(--field);margin-bottom:16px;
}
.prep-list li{
  display:grid;grid-template-columns:14px minmax(0,1fr);gap:12px;
  padding:13px 0;border-top:1px solid var(--line);
  font-size:14px;line-height:1.7;color:var(--muted);
}
.prep-list li:first-child{border-top:0;padding-top:0}
.prep-list li::before{
  content:"";width:8px;height:8px;margin-top:8px;
  border:1px solid var(--field);border-radius:1px;
}
.aside-foot{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:12px;line-height:1.75;color:var(--muted);
}
.aside-link{
  display:inline-block;margin-top:14px;font-size:13px;
  border-bottom:1px solid var(--ink);padding-bottom:2px;
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.aside-link:hover{color:var(--field);border-color:var(--lime)}

/* ---------- method list ---------- */
.method-list{border-top:1px solid var(--line)}
.method-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:10px 24px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
  transition:padding-left .24s var(--ease);
}
@media (min-width:900px){
  .method-row{grid-template-columns:200px minmax(0,1fr) 84px;align-items:center}
  .method-row:hover{padding-left:8px}
}
.method-name{font-size:17px;font-weight:600;line-height:1.5}
.method-desc{font-size:14.5px;line-height:1.8;color:var(--muted)}
.method-tag{
  justify-self:start;
  font-size:11px;letter-spacing:.12em;
  padding:4px 10px;border-radius:999px;
  border:1px solid var(--line);color:var(--muted);
  white-space:nowrap;
}
@media (min-width:900px){.method-tag{justify-self:end}}
.method-row:hover .method-name{color:var(--field)}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:22px 0;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-q::-webkit-details-marker{display:none}
.faq-q:hover{color:var(--field)}
.plus{
  flex:0 0 auto;position:relative;width:16px;height:16px;margin-top:4px;
  transition:transform .26s var(--ease);
}
.plus::before,.plus::after{
  content:"";position:absolute;background:var(--ink);
}
.plus::before{left:0;top:7px;width:16px;height:1px}
.plus::after{top:0;left:7px;height:16px;width:1px}
details[open] .plus{transform:rotate(45deg)}
.faq-a{
  padding:0 0 26px;max-width:68ch;
  font-size:15.5px;line-height:1.85;color:var(--muted);
}

/* ---------- cta ---------- */
.cta-block{
  position:relative;overflow:hidden;
  margin-top:72px;
  border-radius:var(--r-card);
  background:var(--field);
  color:var(--bone);
  padding:44px 28px;
}
@media (min-width:768px){.cta-block{padding:56px 44px}}
.cta-block::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.16;
}
.cta-inner{position:relative;z-index:1;display:grid;gap:28px}
@media (min-width:1024px){
  .cta-inner{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:40px}
}
.cta-kicker{
  font-family:var(--mono);font-size:11px;letter-spacing:.24em;
  color:rgba(244,241,233,.6);margin-bottom:14px;
}
.cta-title{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(1.5rem,2.8vw,2.2rem);line-height:1.28;margin:0 0 12px;
}
.cta-text{font-size:15px;line-height:1.85;color:rgba(244,241,233,.78);max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);color:var(--bone);
  padding:64px 0 0;margin-top:96px;
}
.footer-grid{display:grid;gap:36px}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:5fr 3fr 4fr;gap:48px}
}
.f-brand .b1{font-family:var(--serif);font-weight:700;font-size:22px;line-height:1.3}
.f-brand .b2{
  font-weight:300;font-size:11px;letter-spacing:.32em;
  color:rgba(244,241,233,.7);margin-top:4px;
}
.f-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.f-tags span{
  display:inline-block;padding:4px 12px;border-radius:999px;
  border:1px solid rgba(244,241,233,.24);
  font-size:12px;color:rgba(244,241,233,.72);
}
.f-col-title{
  font-size:12px;letter-spacing:.14em;
  color:rgba(244,241,233,.5);margin-bottom:16px;
}
.f-links a{
  display:block;padding:6px 0;font-size:14px;
  color:rgba(244,241,233,.8);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.f-links a:hover{color:var(--lime)}
.f-contact{font-size:14px;line-height:1.95;color:rgba(244,241,233,.72)}
.f-qr{display:flex;align-items:center;gap:12px;margin-top:18px;font-size:12px;color:rgba(244,241,233,.55)}
.qr-mini{
  width:56px;height:56px;flex:0 0 auto;border-radius:2px;
  border:1px solid rgba(244,241,233,.3);
  background-image:
    repeating-linear-gradient(0deg,rgba(244,241,233,.55) 0 3px,transparent 3px 6px),
    repeating-linear-gradient(90deg,rgba(244,241,233,.35) 0 3px,transparent 3px 6px);
  background-size:12px 12px,12px 12px;
}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 24px;
  margin-top:52px;padding:20px 0 30px;
  border-top:1px solid rgba(244,241,233,.14);
  font-size:12px;letter-spacing:.03em;color:rgba(244,241,233,.55);
}
.fb-links{display:flex;gap:18px}
.fb-links a{color:rgba(244,241,233,.7);transition:color .2s var(--ease)}
.fb-links a:hover{color:var(--lime)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;
  display:flex;flex-direction:column;
  background:var(--bone);
  padding:20px 20px 32px;
  transform:translateY(-102%);
  transition:transform .32s var(--ease);
  overflow-y:auto;
}
.drawer.open{transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.drawer-brand{display:flex;flex-direction:column;line-height:1.15}
.drawer-brand b{font-family:var(--serif);font-size:17px;font-weight:700}
.drawer-brand span{font-size:10px;letter-spacing:.3em;font-weight:300;color:var(--field)}
.drawer-close{
  min-width:44px;height:44px;padding:0 16px;
  border:1px solid var(--ink);border-radius:999px;
  background:transparent;font-size:13px;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.drawer-close:hover{background:var(--ink);color:var(--bone)}
.drawer-nav{display:flex;flex-direction:column;padding:8px 0 24px}
.drawer-nav a{
  display:flex;align-items:baseline;gap:14px;
  padding:16px 0;border-bottom:1px solid var(--line);
  font-family:var(--serif);font-size:24px;font-weight:700;line-height:1.3;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--field);padding-left:6px}
.drawer-nav .dn{font-family:var(--mono);font-size:11px;font-weight:400;letter-spacing:.12em;color:var(--muted)}
.drawer-btn{margin-top:auto;width:100%}

/* ---------- mobile download bar ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:none;align-items:center;justify-content:space-between;gap:12px;
  height:64px;padding:0 16px;
  background:rgba(244,241,233,.98);
  border-top:1px solid var(--line);
  box-shadow:0 -8px 30px rgba(12,15,13,.08);
}
.mb-info{display:flex;flex-direction:column;line-height:1.35}
.mb-plat{font-size:13px;font-weight:500}
.mb-ver{font-family:var(--mono);font-size:11px;color:var(--muted)}
@media (max-width:767px){
  .mobile-bar{display:flex}
  .page{padding-bottom:72px}
}

/* ---------- motion ---------- */
.js-ready .reveal{opacity:0;transform:translateY(16px)}
.js-ready .reveal.in{opacity:1;transform:translateY(0);transition:opacity .5s var(--ease),transform .5s var(--ease)}
@media (prefers-reduced-motion:reduce){
  .js-ready .reveal{opacity:1;transform:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --ink:#0C0F0D;
  --green:#0E3B2E;
  --green-deep:#0A2A21;
  --lime:#D8FF3E;
  --bone:#F4F1E9;
  --paper:#E9E5D9;
  --gray:#5F655B;
  --line:#D5D1C4;
  --clay:#C65A32;
  --container:1280px;
  --r-card:4px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-device:0 30px 80px rgba(12,15,13,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bone);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0}
.mono{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 48px}
@media (max-width:1279px){.container{padding:0 32px}}
@media (max-width:767px){.container{padding:0 20px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,241,233,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 1px 0 rgba(12,15,13,.04),0 12px 30px -24px rgba(12,15,13,.35)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;height:80px;transition:height .24s var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;flex-direction:column;line-height:1.1;flex-shrink:0}
.brand-line1{font-family:"Noto Serif SC",serif;font-weight:900;font-size:19px;letter-spacing:.02em;color:var(--ink)}
.brand-line2{font-size:11px;letter-spacing:.32em;color:var(--gray);margin-top:5px}
.main-nav{display:flex;align-items:center;gap:32px;flex-wrap:nowrap}
.main-nav a{
  position:relative;font-size:14px;letter-spacing:.04em;color:rgba(12,15,13,.68);
  padding:6px 0;transition:color .2s var(--ease);white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink);font-weight:500}
.main-nav a.active::before{
  content:"";position:absolute;left:50%;bottom:-7px;width:5px;height:5px;border-radius:50%;
  background:var(--lime);transform:translateX(-50%);box-shadow:0 0 0 1px rgba(12,15,13,.22);
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.btn-pill{
  display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:999px;
  background:var(--ink);color:var(--bone);font-size:13px;letter-spacing:.06em;
  border:1px solid var(--ink);white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),transform .18s var(--ease);
}
.btn-pill:hover{background:var(--lime);color:var(--ink);border-color:var(--ink)}
.btn-pill:active{transform:scale(.98)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  padding:10px 16px;border:1px solid var(--ink);border-radius:999px;
  font-size:12px;letter-spacing:.16em;color:var(--ink);min-height:44px;
}
.nav-toggle:hover{background:var(--ink);color:var(--bone)}
@media (max-width:1023px){
  .main-nav,.header-actions .btn-pill{display:none}
  .nav-toggle{display:inline-flex}
}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--bone);
  display:flex;flex-direction:column;padding:20px;
  transform:translateY(-102%);visibility:hidden;
  transition:transform .34s var(--ease),visibility .34s var(--ease);
}
.drawer.is-open{transform:translateY(0);visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:16px}
.drawer-close{
  display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;
  border:1px solid var(--ink);border-radius:999px;font-size:12px;letter-spacing:.16em;
}
.drawer-close:hover{background:var(--ink);color:var(--bone)}
.drawer-nav{display:flex;flex-direction:column;margin-top:32px;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:baseline;gap:16px;padding:16px 0;
  border-bottom:1px solid var(--line);
  font-family:"Noto Serif SC",serif;font-weight:700;font-size:26px;letter-spacing:.02em;
}
.drawer-nav a .no{font-family:"JetBrains Mono",monospace;font-size:12px;color:var(--gray);letter-spacing:.1em}
.drawer-nav a.active{color:var(--green)}
.drawer-nav a.active .no{color:var(--green)}
.drawer-cta{margin-top:auto;padding-top:24px}
.drawer-cta .btn-pill{width:100%;justify-content:center;padding:16px 20px;font-size:14px}

/* ---------- page head ---------- */
.page-head{position:relative;overflow:hidden;padding:48px 0 0;background:var(--bone)}
.page-head-bg{
  position:absolute;inset:0;pointer-events:none;
  background:url('/assets/images/backpic/back-1.webp') center right/cover no-repeat;
  opacity:.10;
}
.page-head-lines{position:absolute;inset:0;pointer-events:none;opacity:.5}
.page-head-lines::before,.page-head-lines::after{
  content:"";position:absolute;background:var(--line);
}
.page-head-lines::before{left:0;right:0;top:38%;height:1px}
.page-head-lines::after{top:0;bottom:0;left:72%;width:1px}
.crumbs{position:relative;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--gray);letter-spacing:.04em}
.crumbs a{color:var(--gray);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--ink)}
.crumbs span.sep{color:var(--line)}
.crumbs .cur{color:var(--ink)}
.kicker{
  font-family:"JetBrains Mono",monospace;font-size:12px;letter-spacing:.22em;
  color:var(--gray);margin:26px 0 0;
}
.page-title{
  position:relative;margin:16px 0 0;
  font-family:"Noto Serif SC",serif;font-weight:900;line-height:1.08;letter-spacing:.01em;
}
.page-title .pt-1{display:block;font-size:clamp(1.9rem,4.4vw,3.5rem);color:var(--ink)}
.page-title .pt-2{
  display:block;margin-top:8px;
  font-family:"Noto Sans SC",sans-serif;font-weight:300;
  font-size:clamp(1.9rem,4.4vw,3.5rem);letter-spacing:.14em;color:var(--green);
}
.page-lead{
  position:relative;margin:26px 0 0;max-width:60ch;
  color:var(--gray);font-size:16px;line-height:1.85;
}
.page-meta{position:relative;display:flex;flex-wrap:wrap;gap:26px 56px;margin:34px 0 0}
.page-meta .m-k{display:block;font-size:12px;letter-spacing:.14em;color:var(--gray)}
.page-meta .m-v{display:block;margin-top:6px;font-size:18px;letter-spacing:.02em}
.rule{height:1px;background:var(--line);border:0;margin:36px 0 0}

/* ---------- section shell ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
@media (max-width:1023px){.section{padding:72px 0}.section--tight{padding:56px 0}}
@media (max-width:767px){.section{padding:56px 0}.section--tight{padding:44px 0}}
.sec-head{max-width:70ch}
.sec-title{
  font-family:"Noto Serif SC",serif;font-weight:700;
  font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.25;margin:14px 0 0;
}
.sec-lead{margin:16px 0 0;color:var(--gray);font-size:16px;line-height:1.85}
.sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none}
@media (max-width:767px){.sec-head--row{flex-direction:column;align-items:flex-start;gap:20px}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border-radius:999px;font-size:14px;letter-spacing:.04em;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .18s var(--ease);
  min-height:48px;
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--ink);color:var(--bone);border:1px solid var(--ink)}
.btn-primary:hover{background:var(--lime);color:var(--ink);border-color:var(--ink)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--bone)}
.btn-on-dark{background:var(--lime);color:var(--ink);border:1px solid var(--lime)}
.btn-on-dark:hover{background:var(--bone);color:var(--ink);border-color:var(--bone)}
.btn-outline-light{background:transparent;color:var(--bone);border:1px solid rgba(244,241,233,.45)}
.btn-outline-light:hover{background:var(--bone);color:var(--ink);border-color:var(--bone)}
.link-inline{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;
  text-decoration:underline;text-underline-offset:6px;text-decoration-thickness:1px;
  transition:color .2s var(--ease),text-decoration-color .2s var(--ease);
}
.link-inline:hover{text-decoration-color:var(--lime);color:var(--green)}

/* ---------- download matrix ---------- */
.dl-grid{display:grid;grid-template-columns:8fr 4fr;gap:40px;margin-top:44px;align-items:start}
@media (max-width:1023px){.dl-grid{grid-template-columns:1fr;gap:32px}}
.dl-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:767px){.dl-cards{grid-template-columns:1fr}}
.dl-card{
  display:flex;flex-direction:column;gap:10px;min-height:172px;
  padding:26px 24px;border:1px solid var(--line);border-radius:var(--r-card);
  background:transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.dl-card:hover{background:var(--green);border-color:var(--green);color:var(--bone);transform:translateY(-2px)}
.dl-card .dl-name{font-size:18px;font-weight:600;letter-spacing:.02em}
.dl-card .dl-meta{font-size:12px;letter-spacing:.06em;color:var(--gray);transition:color .24s var(--ease)}
.dl-card:hover .dl-meta{color:rgba(244,241,233,.72)}
.dl-card .dl-arrow{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em}
.dl-card .dl-arrow svg{transition:transform .24s var(--ease)}
.dl-card:hover .dl-arrow svg{transform:translateX(4px)}
.dl-note{margin-top:24px;font-size:13px;color:var(--gray);line-height:1.8}
.dl-side{display:flex;flex-direction:column;gap:20px}
.qr-card{
  border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  display:flex;flex-direction:column;align-items:flex-start;gap:14px;background:rgba(233,229,217,.5);
}
.qr-box{
  width:112px;height:112px;border:1px solid var(--line);border-radius:2px;position:relative;
  background:
    repeating-linear-gradient(90deg,rgba(12,15,13,.85) 0 5px,transparent 5px 11px),
    repeating-linear-gradient(0deg,rgba(12,15,13,.85) 0 5px,transparent 5px 11px);
  background-blend-mode:multiply;opacity:.9;
}
.qr-box::before,.qr-box::after{
  content:"";position:absolute;width:22px;height:22px;border:3px solid var(--ink);background:var(--bone);
}
.qr-box::before{left:4px;top:4px}
.qr-box::after{right:4px;top:4px}
.qr-card p{font-size:14px;letter-spacing:.02em}
.qr-card .qr-ver{font-size:12px;letter-spacing:.1em;color:var(--gray)}
.dl-preview{border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--paper)}
.dl-preview img{width:100%;height:180px;object-fit:cover;transition:transform .3s var(--ease)}
.dl-preview:hover img{transform:scale(1.03)}
.dl-preview figcaption{padding:12px 16px;font-size:12px;letter-spacing:.04em;color:var(--gray)}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto;margin-top:36px;border-top:1px solid var(--ink)}
.data-table{width:100%;border-collapse:collapse;min-width:680px}
.data-table thead th{
  font-size:12px;font-weight:400;letter-spacing:.1em;color:var(--gray);
  text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.data-table tbody th{
  font-size:14px;font-weight:500;text-align:left;color:var(--ink);
  padding:18px;border-bottom:1px solid var(--line);white-space:nowrap;
  background:var(--bone);position:sticky;left:0;z-index:1;
}
.data-table tbody td{
  font-size:15px;color:var(--gray);padding:18px;border-bottom:1px solid var(--line);vertical-align:top;
}
.data-table tbody td.num{color:var(--ink);font-family:"JetBrains Mono",monospace;font-variant-numeric:tabular-nums}
.data-table tbody tr:hover td{color:var(--ink);background:rgba(233,229,217,.45)}
.table-note{margin-top:16px;font-size:12px;letter-spacing:.03em;color:var(--gray)}

/* ---------- steps ---------- */
.step-list{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:44px;border-top:1px solid var(--line)}
.step-list li{padding:28px 24px 8px 0;border-right:1px solid var(--line)}
.step-list li:last-child{border-right:0;padding-right:0}
.step-no{font-family:"JetBrains Mono",monospace;font-size:12px;letter-spacing:.18em;color:var(--green)}
.step-list h3{margin:14px 0 0;font-size:18px;font-weight:600;letter-spacing:.01em}
.step-list p{margin:10px 0 0;font-size:14px;color:var(--gray);line-height:1.8}
@media (max-width:1023px){
  .step-list{grid-template-columns:repeat(2,1fr)}
  .step-list li:nth-child(2n){border-right:0;padding-right:0}
  .step-list li:nth-child(n+3){border-top:1px solid var(--line);margin-top:24px}
}
@media (max-width:639px){
  .step-list{grid-template-columns:1fr}
  .step-list li{border-right:0;padding-right:0;border-bottom:1px solid var(--line);padding-bottom:24px}
  .step-list li:last-child{border-bottom:0}
  .step-list li:nth-child(n+3){border-top:0;margin-top:0}
}

/* ---------- two column ---------- */
.two-col{display:grid;grid-template-columns:8fr 4fr;gap:48px;align-items:start}
@media (max-width:1023px){.two-col{grid-template-columns:1fr;gap:32px}}
.verify-card{
  border:1px solid var(--line);border-radius:var(--r-card);padding:28px;background:rgba(233,229,217,.5);
}
.verify-card h3{font-size:17px;font-weight:600;margin-bottom:16px}
.verify-card ul{list-style:none;display:flex;flex-direction:column;gap:14px}
.verify-card li{
  position:relative;padding-left:20px;font-size:14px;color:var(--gray);line-height:1.8;
}
.verify-card li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:1px;background:var(--green);
}
.warn-strip{
  display:flex;align-items:flex-start;gap:12px;margin-top:28px;
  border-left:2px solid var(--clay);padding:12px 0 12px 16px;
  font-size:14px;color:var(--gray);line-height:1.8;
}
.warn-strip strong{color:var(--clay);font-weight:500}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
@media (max-width:1023px){.faq-grid{grid-template-columns:1fr;gap:36px}}
.faq-side{position:sticky;top:104px}
@media (max-width:1023px){.faq-side{position:static}}
.faq-side .faq-help{margin-top:24px;font-size:14px;color:var(--gray);line-height:1.85}
.faq-list{border-top:1px solid var(--ink)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 0;font-size:18px;font-weight:500;line-height:1.6;cursor:pointer;list-style:none;
  transition:color .2s var(--ease);min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--green)}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);transition:transform .26s var(--ease),background .2s var(--ease);
}
.faq-icon::before{left:0;right:0;top:7.5px;height:1px}
.faq-icon::after{top:0;bottom:0;left:7.5px;width:1px}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-item[open] summary{color:var(--green)}
.faq-answer{padding:0 0 26px;font-size:16px;color:var(--gray);line-height:1.9;max-width:68ch}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--green);color:var(--bone);border-radius:var(--r-card);
  padding:56px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  border:1px solid rgba(216,255,62,.22);
}
.cta-band h2{
  font-family:"Noto Serif SC",serif;font-weight:700;
  font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.3;
}
.cta-band p{margin-top:14px;font-size:15px;color:rgba(244,241,233,.78);max-width:52ch;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1}
@media (max-width:767px){.cta-band{padding:36px 24px;gap:26px}}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(244,241,233,.82);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:5fr 3fr 4fr;gap:48px}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr;gap:32px}}
.f-brand .b1{font-family:"Noto Serif SC",serif;font-size:24px;font-weight:900;color:var(--bone);line-height:1.2}
.f-brand .b2{font-size:12px;letter-spacing:.32em;color:rgba(244,241,233,.55);margin-top:8px}
.f-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.f-tags span{
  border:1px solid rgba(244,241,233,.22);border-radius:999px;padding:5px 13px;
  font-size:12px;letter-spacing:.04em;color:rgba(244,241,233,.75);
}
.f-col-title{font-size:12px;letter-spacing:.18em;color:rgba(244,241,233,.45);margin-bottom:18px}
.f-links{display:flex;flex-direction:column;gap:12px;font-size:14px}
.f-links a{color:rgba(244,241,233,.78);transition:color .2s var(--ease),transform .2s var(--ease);width:fit-content}
.f-links a:hover{color:var(--lime)}
.f-contact{font-size:14px;line-height:2;color:rgba(244,241,233,.72)}
.f-qr{display:flex;align-items:center;gap:14px;margin-top:20px;font-size:12px;color:rgba(244,241,233,.55);line-height:1.7}
.qr-mini{
  width:56px;height:56px;border:1px solid rgba(244,241,233,.3);flex-shrink:0;border-radius:2px;
  background:
    repeating-linear-gradient(90deg,rgba(244,241,233,.75) 0 4px,transparent 4px 8px),
    repeating-linear-gradient(0deg,rgba(244,241,233,.75) 0 4px,transparent 4px 8px);
  background-blend-mode:multiply;
}
.footer-bottom{
  border-top:1px solid rgba(244,241,233,.14);margin-top:52px;padding:24px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;letter-spacing:.03em;color:rgba(244,241,233,.5);
}
.fb-links{display:flex;gap:20px}
.fb-links a{color:rgba(244,241,233,.6);transition:color .2s var(--ease)}
.fb-links a:hover{color:var(--lime)}

/* ---------- mobile bar ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  align-items:center;justify-content:space-between;gap:16px;
  padding:10px 16px;background:rgba(244,241,233,.98);
  border-top:1px solid var(--line);box-shadow:0 -8px 30px rgba(12,15,13,.08);
}
.mobile-bar .mb-k{font-size:11px;letter-spacing:.12em;color:var(--gray)}
.mobile-bar .mb-v{font-size:13px;font-family:"JetBrains Mono",monospace;color:var(--ink)}
.mobile-bar .btn-pill{padding:12px 20px}
@media (max-width:767px){
  .mobile-bar{display:flex}
  body{padding-bottom:72px}
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* roulang page: category3 */
:root{
    --ink:#0C0F0D;
    --green:#0E3B2E;
    --lime:#D8FF3E;
    --bone:#F4F1E9;
    --paper:#E9E5D9;
    --muted:#5F655B;
    --line:#D5D1C4;
    --terra:#C65A32;
    --radius:4px;
    --radius-pill:999px;
    --serif:"Noto Serif SC","Songti SC",serif;
    --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
    --ease:cubic-bezier(.22,.61,.36,1);
  }

  *,*::before,*::after{box-sizing:border-box}

  html body{
    margin:0;
    background:var(--bone);
    color:var(--ink);
    font-family:var(--sans);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }

  img{display:block;max-width:100%}
  a{color:inherit}
  button{font-family:inherit}

  body .container{
    width:100%;
    max-width:1280px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){
    body .container{padding-left:32px;padding-right:32px}
  }
  @media (min-width:1280px){
    body .container{padding-left:48px;padding-right:48px}
  }

  :focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    background:rgba(244,241,233,.94);
    border-bottom:1px solid var(--line);
    backdrop-filter:saturate(150%) blur(10px);
    transition:box-shadow .24s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:0 1px 0 rgba(12,15,13,.06)}
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    height:80px;
    transition:height .24s var(--ease);
  }
  .site-header.is-scrolled .header-inner{height:64px}

  .brand{
    display:flex;
    flex-direction:column;
    text-decoration:none;
    color:var(--ink);
    line-height:1.05;
    flex:0 0 auto;
  }
  .brand-line1{
    font-family:var(--serif);
    font-weight:900;
    font-size:20px;
    letter-spacing:.02em;
  }
  .brand-line2{
    font-family:var(--sans);
    font-weight:300;
    font-size:11px;
    letter-spacing:.36em;
    color:var(--muted);
    margin-top:3px;
  }

  .main-nav{display:none;align-items:center;gap:30px}
  @media (min-width:1024px){.main-nav{display:flex}}
  .main-nav a{
    position:relative;
    display:inline-block;
    padding:6px 0;
    font-size:13.5px;
    letter-spacing:.06em;
    color:rgba(12,15,13,.7);
    text-decoration:none;
    transition:color .2s var(--ease);
    white-space:nowrap;
  }
  .main-nav a::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:-1px;
    height:1px;
    background:var(--ink);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .24s var(--ease);
  }
  .main-nav a:hover{color:var(--ink)}
  .main-nav a:hover::after{transform:scaleX(1)}
  .main-nav a.active{color:var(--ink);font-weight:500}
  .main-nav a.active::before{
    content:"";
    position:absolute;
    left:50%;bottom:-10px;
    width:5px;height:5px;
    margin-left:-2.5px;
    border-radius:50%;
    background:var(--lime);
    box-shadow:0 0 0 1px rgba(12,15,13,.32);
  }

  .header-actions{display:flex;align-items:center;gap:12px}

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:46px;
    padding:0 22px;
    border-radius:var(--radius-pill);
    border:1px solid transparent;
    font-size:14px;
    font-weight:500;
    letter-spacing:.04em;
    text-decoration:none;
    cursor:pointer;
    transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .16s var(--ease);
  }
  .btn-primary{background:var(--ink);color:var(--bone);border-color:var(--ink)}
  .btn-primary:hover{background:var(--lime);color:var(--ink);border-color:var(--ink)}
  .btn-primary:active{transform:scale(.98)}
  .btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
  .btn-ghost:hover{background:var(--ink);color:var(--bone)}
  .btn-ghost:active{transform:scale(.98)}
  .btn-sm{min-height:40px;padding:0 18px;font-size:13px}
  .on-dark .btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime)}
  .on-dark .btn-primary:hover{background:var(--bone);color:var(--ink);border-color:var(--bone)}
  .on-dark .btn-ghost{color:var(--bone);border-color:rgba(244,241,233,.5)}
  .on-dark .btn-ghost:hover{background:var(--bone);color:var(--ink);border-color:var(--bone)}

  .header-cta{display:none}
  @media (min-width:640px){.header-cta{display:inline-flex}}

  .menu-btn{
    display:inline-flex;
    flex-direction:column;
    justify-content:center;
    gap:5px;
    width:44px;height:44px;
    padding:0 10px;
    background:transparent;
    border:1px solid var(--line);
    border-radius:var(--radius-pill);
    cursor:pointer;
    transition:border-color .2s var(--ease),background .2s var(--ease);
  }
  .menu-btn span{display:block;height:1px;background:var(--ink);transition:transform .24s var(--ease),opacity .2s var(--ease)}
  .menu-btn:hover{border-color:var(--ink);background:var(--paper)}
  @media (min-width:1024px){.menu-btn{display:none}}

  /* ---------- Drawer ---------- */
  .drawer{
    position:fixed;
    inset:0;
    z-index:120;
    background:var(--bone);
    display:flex;
    flex-direction:column;
    padding:20px;
    opacity:0;
    visibility:hidden;
    transform:translateY(-12px);
    transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s;
  }
  .drawer.open{opacity:1;visibility:visible;transform:none}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:20px;border-bottom:1px solid var(--line)}
  .drawer-close{
    width:44px;height:44px;
    display:inline-flex;align-items:center;justify-content:center;
    background:transparent;border:1px solid var(--line);border-radius:var(--radius-pill);
    font-size:18px;color:var(--ink);cursor:pointer;
    transition:border-color .2s var(--ease),background .2s var(--ease);
  }
  .drawer-close:hover{border-color:var(--ink);background:var(--paper)}
  .drawer-nav{display:flex;flex-direction:column;margin-top:12px}
  .drawer-nav a{
    display:flex;
    align-items:baseline;
    gap:14px;
    padding:18px 0;
    border-bottom:1px solid var(--line);
    text-decoration:none;
    font-family:var(--serif);
    font-size:26px;
    font-weight:700;
    color:var(--ink);
    transition:color .2s var(--ease),padding-left .2s var(--ease);
  }
  .drawer-nav a:hover,.drawer-nav a.active{color:var(--green);padding-left:6px}
  .drawer-nav a em{
    font-family:var(--mono);
    font-style:normal;
    font-size:12px;
    letter-spacing:.12em;
    color:var(--muted);
  }
  .drawer-cta{margin-top:auto;padding-top:24px}

  /* ---------- Page hero ---------- */
  .page-hero{
    position:relative;
    padding:32px 0 0;
    overflow:hidden;
  }
  .page-hero::before{
    content:"";
    position:absolute;
    top:0;right:0;
    width:58%;height:100%;
    background-image:url("/assets/images/backpic/back-2.png");
    background-size:cover;
    background-position:center right;
    opacity:.13;
    pointer-events:none;
  }
  .breadcrumb{
    position:relative;
    display:flex;
    align-items:center;
    gap:8px;
    font-size:12px;
    letter-spacing:.06em;
    color:var(--muted);
  }
  .breadcrumb a{text-decoration:none;color:var(--muted);transition:color .2s var(--ease)}
  .breadcrumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px}
  .breadcrumb .sep{color:var(--line)}

  .hero-grid{
    position:relative;
    display:grid;
    grid-template-columns:1fr;
    gap:36px;
    padding:26px 0 44px;
  }
  @media (min-width:1024px){
    .hero-grid{grid-template-columns:7fr 5fr;gap:56px;align-items:start;padding:32px 0 56px}
  }

  .kicker{
    font-family:var(--mono);
    font-size:11.5px;
    letter-spacing:.26em;
    color:var(--green);
    text-transform:uppercase;
  }
  .hero-title{
    margin:14px 0 0;
    font-family:var(--serif);
    font-weight:900;
    font-size:clamp(1.9rem,4.4vw,3.35rem);
    line-height:1.14;
    letter-spacing:.01em;
  }
  .hero-title .thin{
    display:block;
    font-family:var(--sans);
    font-weight:300;
    font-size:clamp(1.05rem,2.2vw,1.5rem);
    letter-spacing:.2em;
    color:var(--green);
    margin-top:12px;
  }
  .hero-sub{
    margin:20px 0 0;
    max-width:54ch;
    font-size:15.5px;
    color:var(--muted);
  }

  .hero-stats{
    margin-top:32px;
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:16px;
    border-top:1px solid var(--line);
    padding-top:20px;
  }
  .stat-num{
    font-family:var(--mono);
    font-variant-numeric:tabular-nums;
    font-size:clamp(1.4rem,3vw,1.9rem);
    font-weight:500;
    line-height:1.1;
    color:var(--green);
  }
  .stat-label{
    margin-top:8px;
    font-size:12px;
    letter-spacing:.08em;
    color:var(--muted);
  }

  .hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:12px}

  .panel-card{
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:#fff;
    overflow:hidden;
  }
  .panel-cover{width:100%;height:190px;object-fit:cover;object-position:center}
  .panel-body{padding:20px 22px 22px}
  .panel-title{
    font-family:var(--sans);
    font-weight:600;
    font-size:15px;
    margin:0 0 4px;
  }
  .panel-note{font-size:12px;color:var(--muted);margin:0 0 8px}
  .panel-row{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:12px 0;
    border-bottom:1px solid var(--line);
    font-size:13px;
    color:var(--muted);
  }
  .panel-row:last-child{border-bottom:0;padding-bottom:0}
  .panel-row b{
    font-family:var(--mono);
    font-variant-numeric:tabular-nums;
    font-weight:500;
    color:var(--ink);
  }
  .dot-live{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:12px;
    color:var(--green);
  }
  .dot-live::before{
    content:"";
    width:6px;height:6px;border-radius:50%;
    background:var(--lime);
    box-shadow:0 0 0 1px var(--green);
  }

  /* ---------- Section shell ---------- */
  .section{padding:56px 0}
  @media (min-width:768px){.section{padding:80px 0}}
  @media (min-width:1024px){.section{padding:108px 0}}
  .section--tight{padding:44px 0}
  @media (min-width:1024px){.section--tight{padding:72px 0}}

  .section-head{max-width:70ch;margin-bottom:32px}
  @media (min-width:1024px){.section-head{margin-bottom:44px}}
  .sec-title{
    font-family:var(--serif);
    font-weight:700;
    font-size:clamp(1.5rem,2.9vw,2.3rem);
    line-height:1.24;
    margin:10px 0 0;
    letter-spacing:.01em;
  }
  .sec-desc{margin:14px 0 0;color:var(--muted);font-size:15px;max-width:66ch}
  .hairline{height:1px;background:var(--line);border:0;margin:0}

  /* ---------- Schedule table ---------- */
  .table-wrap{
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:#fff;
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
  }
  table.schedule{width:100%;border-collapse:collapse;min-width:780px}
  table.schedule caption{
    caption-side:top;
    text-align:left;
    padding:16px 20px;
    font-size:12px;
    letter-spacing:.08em;
    color:var(--muted);
    border-bottom:1px solid var(--line);
  }
  table.schedule th{
    text-align:left;
    font-size:11.5px;
    font-weight:500;
    letter-spacing:.12em;
    color:var(--muted);
    padding:14px 20px;
    border-bottom:1px solid var(--line);
    background:var(--paper);
    white-space:nowrap;
  }
  table.schedule td{
    padding:0 20px;
    height:58px;
    font-size:14.5px;
    border-bottom:1px solid var(--line);
    vertical-align:middle;
  }
  table.schedule tbody tr:last-child td{border-bottom:0}
  table.schedule tbody tr{transition:background .2s var(--ease)}
  table.schedule tbody tr:hover{background:rgba(233,229,217,.55)}
  .cell-mono{
    font-family:var(--mono);
    font-variant-numeric:tabular-nums;
    font-size:13px;
    color:var(--muted);
    white-space:nowrap;
  }
  .team-cell{color:var(--ink);white-space:nowrap}
  .tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:3px 10px;
    border:1px solid var(--line);
    border-radius:var(--radius-pill);
    font-size:11.5px;
    letter-spacing:.06em;
    color:var(--muted);
    background:transparent;
    white-space:nowrap;
  }
  .tag--live{border-color:var(--green);color:var(--green)}
  .tag--done{background:var(--paper);color:var(--muted)}
  .tag--wait{border-color:var(--line);color:var(--muted)}
  .tag--sync{border-color:var(--terra);color:var(--terra)}
  .table-foot{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    margin-top:16px;
    font-size:12.5px;
    color:var(--muted);
  }
  .text-link{
    color:var(--ink);
    text-decoration:underline;
    text-underline-offset:6px;
    text-decoration-thickness:1px;
    transition:color .2s var(--ease),text-decoration-color .2s var(--ease);
  }
  .text-link:hover{text-decoration-color:var(--lime);color:var(--green)}

  @media (max-width:767px){
    table.schedule th:first-child,
    table.schedule td:first-child{
      position:sticky;
      left:0;
      z-index:2;
      background:#fff;
      box-shadow:1px 0 0 var(--line);
    }
    table.schedule th:first-child{background:var(--paper)}
  }

  /* ---------- Data cards ---------- */
  .data-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:1024px){
    .data-grid{grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
  }
  .card-feature{
    display:flex;
    flex-direction:column;
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:#fff;
    overflow:hidden;
    transition:border-color .24s var(--ease),transform .24s var(--ease);
  }
  .card-feature:hover{border-color:var(--ink)}
  .card-feature img{width:100%;height:220px;object-fit:cover;transition:transform .5s var(--ease)}
  .card-feature:hover img{transform:scale(1.03)}
  .card-feature .cf-body{padding:24px;display:flex;flex-direction:column;gap:10px}
  .card-index{
    font-family:var(--mono);
    font-size:11.5px;
    letter-spacing:.16em;
    color:var(--green);
  }
  .card-title{
    font-family:var(--sans);
    font-weight:600;
    font-size:19px;
    line-height:1.4;
    margin:0;
  }
  .card-text{margin:0;font-size:14.5px;color:var(--muted)}

  .mini-stack{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:1024px){.mini-stack{gap:24px}}
  .card-mini{
    display:flex;
    gap:16px;
    padding:18px;
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:#fff;
    transition:border-color .24s var(--ease),background .24s var(--ease);
  }
  .card-mini:hover{border-color:var(--ink);background:#fff}
  .card-mini img{
    width:88px;height:88px;
    flex:0 0 88px;
    object-fit:cover;
    border-radius:2px;
    transition:transform .4s var(--ease);
  }
  .card-mini:hover img{transform:scale(1.04)}
  .card-mini .cm-body{min-width:0}
  .card-mini .card-title{font-size:16px}
  .card-mini .card-text{font-size:13.5px;margin-top:6px}

  /* ---------- Flow timeline ---------- */
  .flow{
    display:grid;
    grid-template-columns:1fr;
    gap:0;
    border-top:1px solid var(--line);
  }
  @media (min-width:768px){.flow{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (min-width:1024px){.flow{grid-template-columns:repeat(4,minmax(0,1fr))}}
  .flow-item{
    padding:24px 0 22px;
    border-bottom:1px solid var(--line);
    position:relative;
  }
  @media (min-width:1024px){
    .flow-item{padding:26px 24px 24px 0;border-bottom:0}
    .flow-item + .flow-item{border-left:1px solid var(--line);padding-left:24px}
  }
  .flow-num{
    font-family:var(--mono);
    font-size:12px;
    letter-spacing:.16em;
    color:var(--green);
  }
  .flow-title{
    margin:12px 0 8px;
    font-family:var(--sans);
    font-weight:600;
    font-size:16px;
  }
  .flow-text{margin:0;font-size:13.5px;color:var(--muted);line-height:1.7}

  /* ---------- Dimension list ---------- */
  .dim-grid{display:grid;grid-template-columns:1fr;gap:28px}
  @media (min-width:1024px){.dim-grid{grid-template-columns:4fr 8fr;gap:64px;align-items:start}}
  .dim-sticky{position:static}
  @media (min-width:1024px){.dim-sticky{position:sticky;top:104px}}
  .dim-list{border-top:1px solid var(--line)}
  .dim-row{
    display:grid;
    grid-template-columns:1fr;
    gap:6px;
    padding:20px 0;
    border-bottom:1px solid var(--line);
    transition:padding-left .24s var(--ease);
  }
  @media (min-width:768px){
    .dim-row{grid-template-columns:180px 1fr;gap:24px;align-items:baseline}
  }
  .dim-row:hover{padding-left:8px}
  .dim-name{
    display:flex;
    align-items:baseline;
    gap:10px;
    font-weight:600;
    font-size:15.5px;
  }
  .dim-name em{
    font-family:var(--mono);
    font-style:normal;
    font-size:11.5px;
    letter-spacing:.14em;
    color:var(--green);
  }
  .dim-desc{margin:0;font-size:14px;color:var(--muted)}

  /* ---------- FAQ ---------- */
  .faq-grid{display:grid;grid-template-columns:1fr;gap:28px}
  @media (min-width:1024px){.faq-grid{grid-template-columns:4fr 8fr;gap:64px;align-items:start}}
  .faq-side{position:static}
  @media (min-width:1024px){.faq-side{position:sticky;top:104px}}
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:22px 0;
    background:none;
    border:0;
    text-align:left;
    cursor:pointer;
    font-size:18px;
    font-weight:600;
    color:var(--ink);
    line-height:1.5;
    transition:color .2s var(--ease);
  }
  .faq-q:hover{color:var(--green)}
  .faq-plus{
    flex:0 0 auto;
    width:22px;height:22px;
    position:relative;
    transition:transform .26s var(--ease);
  }
  .faq-plus::before,.faq-plus::after{
    content:"";
    position:absolute;
    top:50%;left:50%;
    background:var(--ink);
    transform:translate(-50%,-50%);
  }
  .faq-plus::before{width:14px;height:1px}
  .faq-plus::after{width:1px;height:14px}
  .faq-item.open .faq-plus{transform:rotate(45deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
  .faq-a-inner{padding:0 0 24px;font-size:15.5px;color:var(--muted);max-width:68ch}

  /* ---------- CTA ---------- */
  .cta-band{
    background:var(--green);
    color:var(--bone);
    border-radius:var(--radius);
    padding:36px 24px;
    display:grid;
    grid-template-columns:1fr;
    gap:26px;
    position:relative;
    overflow:hidden;
  }
  .cta-band::after{
    content:"";
    position:absolute;
    right:-40px;bottom:-60px;
    width:220px;height:220px;
    border:1px solid rgba(244,241,233,.18);
    border-radius:50%;
    pointer-events:none;
  }
  @media (min-width:1024px){
    .cta-band{grid-template-columns:7fr 5fr;align-items:center;padding:52px 48px;gap:40px}
  }
  .cta-title{
    font-family:var(--serif);
    font-weight:700;
    font-size:clamp(1.4rem,2.6vw,2rem);
    line-height:1.3;
    margin:0;
    color:var(--bone);
  }
  .cta-text{margin:14px 0 0;font-size:14.5px;color:rgba(244,241,233,.72);max-width:56ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  @media (min-width:1024px){.cta-actions{justify-content:flex-end}}

  /* ---------- Footer ---------- */
  .site-footer{
    background:var(--ink);
    color:var(--bone);
    padding:56px 0 26px;
    margin-top:64px;
  }
  @media (min-width:1024px){.site-footer{padding:72px 0 30px;margin-top:96px}}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
  @media (min-width:1024px){.footer-grid{grid-template-columns:5fr 3fr 4fr;gap:48px}}
  .f-brand .b1{
    font-family:var(--serif);
    font-weight:900;
    font-size:21px;
    line-height:1.1;
  }
  .f-brand .b2{
    font-family:var(--sans);
    font-weight:300;
    font-size:11px;
    letter-spacing:.36em;
    color:rgba(244,241,233,.6);
    margin-top:4px;
  }
  .f-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
  .f-tags span{
    display:inline-block;
    padding:4px 12px;
    border:1px solid rgba(244,241,233,.25);
    border-radius:var(--radius-pill);
    font-size:11.5px;
    letter-spacing:.08em;
    color:rgba(244,241,233,.75);
  }
  .f-col-title{
    font-size:11.5px;
    letter-spacing:.2em;
    color:rgba(244,241,233,.5);
    margin-bottom:16px;
  }
  .f-links{display:flex;flex-direction:column}
  .f-links a{
    display:inline-block;
    padding:6px 0;
    font-size:14px;
    color:rgba(244,241,233,.78);
    text-decoration:none;
    width:fit-content;
    transition:color .2s var(--ease),transform .2s var(--ease);
  }
  .f-links a:hover{color:var(--lime);transform:translateX(3px)}
  .f-contact{font-size:13.5px;line-height:2;color:rgba(244,241,233,.72)}
  .f-qr{display:flex;align-items:center;gap:14px;margin-top:20px}
  .qr-mini{
    width:64px;height:64px;
    border:1px solid rgba(244,241,233,.3);
    border-radius:2px;
    background:
      repeating-linear-gradient(45deg,rgba(244,241,233,.18) 0 1px,transparent 1px 6px);
  }
  .f-qr span{font-size:12px;line-height:1.6;color:rgba(244,241,233,.6)}
  .footer-bottom{
    margin-top:44px;
    padding-top:20px;
    border-top:1px solid rgba(244,241,233,.16);
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    font-size:12px;
    color:rgba(244,241,233,.55);
  }
  .fb-links{display:flex;gap:18px}
  .fb-links a{color:rgba(244,241,233,.65);text-decoration:none;transition:color .2s var(--ease)}
  .fb-links a:hover{color:var(--lime)}

  /* ---------- Reveal ---------- */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
  .reveal.in{opacity:1;transform:none}
  @media (prefers-reduced-motion: reduce){
    .reveal{opacity:1;transform:none;transition:none}
    *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  }

/* roulang page: category4 */
:root{
    --ink:#0C0F0D;
    --green:#0E3B2E;
    --lime:#D8FF3E;
    --bone:#F4F1E9;
    --paper:#E9E5D9;
    --white:#FCFBF7;
    --gray:#5F655B;
    --line:#D5D1C4;
    --clay:#C65A32;
    --r-card:4px;
    --r-img:2px;
    --r-pill:999px;
    --shadow-dev:0 30px 80px rgba(12,15,13,.18);
    --t:240ms cubic-bezier(.22,.61,.36,1);
    --serif:"Noto Serif SC",Songti SC,serif;
    --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  .site-body{
    margin:0;
    padding:0;
    background:var(--bone);
    color:var(--ink);
    font-family:var(--sans);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  .site-body img{display:block;max-width:100%}
  .site-body a{color:inherit;text-decoration:none}
  .site-body button{font:inherit;cursor:pointer}
  .site-body ul,.site-body ol{margin:0;padding:0;list-style:none}
  .site-body p{margin:0}
  .site-body :focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px}

  .container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 32px}}
  @media (min-width:1280px){.container{padding:0 48px}}

  .mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
  .serif{font-family:var(--serif)}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    background:rgba(244,241,233,.94);
    border-bottom:1px solid var(--line);
    transition:background var(--t),border-color var(--t);
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    height:80px;
    transition:height var(--t);
  }
  .site-header.compact .header-inner{height:64px}
  .brand{display:flex;flex-direction:column;line-height:1.12;flex:none}
  .brand .b1{
    font-family:var(--serif);
    font-weight:700;
    font-size:18px;
    letter-spacing:.05em;
    color:var(--ink);
  }
  .brand .b2{
    font-size:10.5px;
    font-weight:300;
    letter-spacing:.32em;
    color:var(--gray);
    margin-top:3px;
  }
  .brand:hover .b1{color:var(--green)}

  .main-nav{display:flex;align-items:center;gap:30px}
  .main-nav a{
    position:relative;
    font-size:13.5px;
    letter-spacing:.08em;
    color:rgba(12,15,13,.7);
    padding:8px 0;
    transition:color var(--t);
  }
  .main-nav a::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:2px;
    height:1px;
    background:var(--ink);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform var(--t);
  }
  .main-nav a:hover{color:var(--ink)}
  .main-nav a:hover::after{transform:scaleX(1)}
  .main-nav a.active{color:var(--ink)}
  .main-nav a.active::before{
    content:"";
    position:absolute;
    left:50%;
    bottom:-6px;
    width:5px;height:5px;
    margin-left:-2.5px;
    border-radius:50%;
    background:var(--lime);
    box-shadow:0 0 0 1px rgba(12,15,13,.85);
  }
  .main-nav a.active::after{transform:scaleX(0)}

  .header-right{display:flex;align-items:center;gap:12px;flex:none}
  .menu-btn{
    display:inline-flex;
    align-items:center;
    gap:8px;
    min-height:44px;
    padding:0 16px;
    border:1px solid var(--line);
    border-radius:var(--r-pill);
    background:transparent;
    font-size:12px;
    letter-spacing:.16em;
    color:var(--ink);
    transition:border-color var(--t),background var(--t);
  }
  .menu-btn:hover{border-color:var(--ink);background:var(--paper)}
  .menu-btn .bars{display:inline-flex;flex-direction:column;gap:3px}
  .menu-btn .bars i{display:block;width:14px;height:1px;background:var(--ink)}

  @media (max-width:1023px){
    .main-nav{display:none}
    .nav-cta{display:none}
  }
  @media (min-width:1024px){
    .menu-btn{display:none}
  }

  /* ---------- Drawer ---------- */
  .drawer{
    position:fixed;
    inset:0;
    z-index:95;
    background:var(--bone);
    display:flex;
    flex-direction:column;
    padding:24px 22px 28px;
    transform:translateY(-102%);
    transition:transform 320ms cubic-bezier(.22,.61,.36,1);
    overflow-y:auto;
  }
  .drawer.open{transform:translateY(0)}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
  .drawer-brand{display:flex;flex-direction:column;line-height:1.1}
  .drawer-brand .b1{font-family:var(--serif);font-size:17px;font-weight:700;letter-spacing:.05em}
  .drawer-brand .b2{font-size:10px;letter-spacing:.3em;color:var(--gray);margin-top:3px}
  .drawer-close{
    width:44px;height:44px;
    border:1px solid var(--line);
    border-radius:50%;
    background:transparent;
    font-size:16px;
    color:var(--ink);
    display:flex;align-items:center;justify-content:center;
  }
  .drawer-close:hover{border-color:var(--ink)}
  .drawer-nav{display:grid}
  .drawer-nav a{
    display:flex;
    align-items:baseline;
    gap:16px;
    padding:16px 0;
    border-bottom:1px solid var(--line);
    font-family:var(--serif);
    font-size:24px;
    font-weight:600;
    letter-spacing:.02em;
  }
  .drawer-nav a .n{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--gray)}
  .drawer-nav a.active{color:var(--green)}
  .drawer-nav a.active .n{color:var(--green)}
  .drawer-foot{margin-top:auto;padding-top:26px;display:grid;gap:12px}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:46px;
    padding:0 22px;
    border-radius:var(--r-pill);
    border:1px solid transparent;
    font-size:14px;
    letter-spacing:.06em;
    transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
    white-space:nowrap;
  }
  .btn:active{transform:scale(.98)}
  .btn-primary{background:var(--ink);color:var(--bone);border-color:var(--ink)}
  .btn-primary:hover{background:var(--lime);color:var(--ink);border-color:var(--ink)}
  .btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
  .btn-ghost:hover{background:var(--ink);color:var(--bone)}
  .btn-lime{background:var(--lime);color:var(--ink);border-color:var(--lime)}
  .btn-lime:hover{background:var(--bone);color:var(--ink);border-color:var(--bone)}
  .btn-outline-light{background:transparent;color:var(--bone);border-color:rgba(244,241,233,.5)}
  .btn-outline-light:hover{background:var(--bone);color:var(--ink);border-color:var(--bone)}
  .text-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    color:var(--ink);
    border-bottom:1px solid currentColor;
    padding-bottom:2px;
    transition:border-color var(--t),color var(--t);
  }
  .text-link:hover{border-color:var(--lime)}
  .text-link .ar{transition:transform var(--t)}
  .text-link:hover .ar{transform:translateX(4px)}

  /* ---------- Hero ---------- */
  .hero{padding:36px 0 0}
  @media (min-width:1024px){.hero{padding:48px 0 0}}
  .crumbs{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:8px;
    font-size:12px;
    letter-spacing:.05em;
    color:var(--gray);
    margin-bottom:26px;
  }
  .crumbs .sep{color:var(--line)}
  .crumbs a:hover{color:var(--ink)}
  .crumbs .cur{color:var(--ink)}

  .hero-grid{display:grid;gap:36px;grid-template-columns:1fr}
  @media (min-width:1024px){
    .hero-grid{grid-template-columns:1.55fr .85fr;gap:48px;align-items:start}
  }
  .hero-kicker{
    display:flex;
    align-items:center;
    gap:12px;
    font-family:var(--mono);
    font-size:11.5px;
    letter-spacing:.26em;
    color:var(--gray);
    margin-bottom:20px;
  }
  .hero-kicker::before{content:"";width:34px;height:1px;background:var(--ink)}
  .hero-title{
    font-family:var(--serif);
    font-weight:700;
    font-size:clamp(2rem,5vw,3.9rem);
    line-height:1.1;
    letter-spacing:.01em;
    margin:0;
    word-break:break-word;
  }
  .hero-title .thin{
    display:block;
    margin-top:10px;
    font-family:var(--sans);
    font-weight:300;
    font-size:clamp(1.15rem,2.6vw,2rem);
    letter-spacing:.14em;
    color:var(--green);
  }
  .hero-sub{
    margin-top:22px;
    max-width:58ch;
    font-size:16.5px;
    line-height:1.85;
    color:var(--gray);
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
  .hero-meta{
    display:flex;
    flex-wrap:wrap;
    gap:10px 26px;
    margin-top:26px;
    font-size:12px;
    letter-spacing:.08em;
    color:var(--gray);
  }
  .hero-meta .m{display:flex;align-items:baseline;gap:8px}
  .hero-meta .k{color:rgba(95,101,91,.85)}
  .hero-meta .v{font-family:var(--mono);color:var(--ink);font-size:12.5px}

  .hero-panel{
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
  }
  .panel-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:15px 20px;
    border-bottom:1px solid var(--line);
    font-size:11.5px;
    letter-spacing:.2em;
    color:var(--gray);
  }
  .panel-head .code{font-family:var(--mono);letter-spacing:.08em;color:var(--green)}
  .panel-row{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    padding:15px 20px;
    border-bottom:1px solid var(--line);
  }
  .panel-row:last-of-type{border-bottom:none}
  .panel-row .k{font-size:14px;color:var(--ink)}
  .panel-row .v{font-family:var(--mono);font-size:12.5px;color:var(--gray)}
  .panel-note{
    padding:12px 20px 16px;
    font-size:11.5px;
    line-height:1.7;
    color:rgba(95,101,91,.9);
    border-top:1px dashed var(--line);
  }
  .tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:4px 10px;
    border-radius:var(--r-pill);
    border:1px solid var(--line);
    background:var(--paper);
    font-size:11.5px;
    letter-spacing:.06em;
    color:var(--gray);
    white-space:nowrap;
  }
  .tag.ok{color:var(--green);border-color:rgba(14,59,46,.3);background:rgba(216,255,62,.26)}
  .tag.warn{color:#7E3618;border-color:rgba(198,90,50,.45);background:rgba(198,90,50,.12)}
  .tag.plain{background:transparent}

  .rule{height:1px;background:var(--line);margin-top:36px}

  /* ---------- Alert band ---------- */
  .alert-band{
    margin-top:34px;
    background:rgba(198,90,50,.1);
    border-top:1px solid rgba(198,90,50,.32);
    border-bottom:1px solid rgba(198,90,50,.32);
    color:#7E3618;
  }
  .alert-band .inner{
    display:flex;
    gap:12px;
    align-items:flex-start;
    padding:13px 0;
    font-size:13.5px;
    line-height:1.7;
  }
  .alert-band .dot{
    flex:none;
    width:8px;height:8px;
    margin-top:7px;
    border-radius:50%;
    background:var(--clay);
  }
  .alert-band strong{font-weight:600}

  /* ---------- Sections ---------- */
  .section{padding:60px 0}
  @media (min-width:768px){.section{padding:80px 0}}
  @media (min-width:1024px){.section{padding:96px 0}}
  .section.tight{padding-top:16px}
  .section-kicker{
    font-family:var(--mono);
    font-size:11.5px;
    letter-spacing:.24em;
    color:var(--gray);
    margin-bottom:14px;
  }
  .h2{
    font-family:var(--serif);
    font-weight:700;
    font-size:clamp(1.6rem,3.1vw,2.6rem);
    line-height:1.2;
    letter-spacing:.01em;
    margin:0;
  }
  .section-lead{
    margin-top:14px;
    max-width:62ch;
    font-size:15.5px;
    line-height:1.85;
    color:var(--gray);
  }
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:38px}
  @media (min-width:1024px){.section-head{margin-bottom:48px}}

  /* ---------- Checklist ---------- */
  .checklist{
    display:grid;
    grid-template-columns:1fr;
    border-top:1px solid var(--line);
  }
  @media (min-width:768px){
    .checklist{grid-template-columns:1fr 1fr;column-gap:56px}
  }
  .check-item{
    display:grid;
    grid-template-columns:auto 1fr;
    gap:16px;
    padding:24px 0;
    border-bottom:1px solid var(--line);
  }
  .check-num{
    font-family:var(--mono);
    font-size:12.5px;
    letter-spacing:.1em;
    color:var(--gray);
    padding-top:5px;
  }
  .check-item h3{
    margin:0 0 7px;
    font-size:17.5px;
    font-weight:600;
    letter-spacing:.01em;
  }
  .check-item p{
    font-size:14.5px;
    line-height:1.85;
    color:var(--gray);
    max-width:46ch;
  }
  .check-item:hover h3{color:var(--green)}

  /* ---------- Steps ---------- */
  .steps-wrap{display:grid;gap:36px;grid-template-columns:1fr}
  @media (min-width:1024px){.steps-wrap{grid-template-columns:1.5fr .7fr;gap:56px;align-items:start}}
  .steps{border-top:1px solid var(--line)}
  .step{
    display:grid;
    grid-template-columns:52px 1fr;
    gap:18px;
    padding:26px 0;
    border-bottom:1px solid var(--line);
  }
  .step-num{
    width:44px;height:44px;
    border:1px solid var(--ink);
    border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    font-family:var(--mono);
    font-size:13px;
    color:var(--ink);
    transition:background var(--t),color var(--t),border-color var(--t);
  }
  .step:hover .step-num{background:var(--lime);border-color:var(--ink)}
  .step h3{margin:6px 0 8px;font-size:19px;font-weight:600;line-height:1.4}
  .step p{font-size:14.5px;line-height:1.85;color:var(--gray);max-width:52ch}
  .step .hint{
    display:inline-block;
    margin-top:10px;
    font-size:12px;
    letter-spacing:.06em;
    color:var(--gray);
    border-left:2px solid var(--lime);
    padding-left:10px;
  }
  .sticky-card{
    position:sticky;
    top:96px;
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:24px;
  }
  .sticky-card .sc-title{
    font-size:12px;
    letter-spacing:.2em;
    color:var(--gray);
    margin-bottom:16px;
  }
  .sticky-card ul{display:grid;gap:12px}
  .sticky-card li{
    display:grid;
    grid-template-columns:auto 1fr;
    gap:10px;
    font-size:14px;
    line-height:1.7;
    color:var(--ink);
  }
  .sticky-card li .mk{color:var(--green);font-family:var(--mono);font-size:12px;padding-top:2px}
  .sticky-card .sc-foot{
    margin-top:20px;
    padding-top:16px;
    border-top:1px solid var(--line);
  }
  @media (max-width:1023px){
    .sticky-card{position:static}
  }

  /* ---------- Info cards ---------- */
  .duo{
    display:grid;
    grid-template-columns:1fr;
    gap:24px;
  }
  @media (min-width:900px){.duo{grid-template-columns:1fr 1fr;gap:28px}}
  .info-card{
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    transition:border-color var(--t),transform var(--t);
  }
  .info-card:hover{border-color:var(--ink)}
  .card-media{
    position:relative;
    aspect-ratio:16/10;
    overflow:hidden;
    border-bottom:1px solid var(--line);
    background:var(--paper);
  }
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform 520ms cubic-bezier(.22,.61,.36,1)}
  .info-card:hover .card-media img{transform:scale(1.03)}
  .card-media .media-tag{
    position:absolute;
    left:14px;top:14px;
    padding:4px 10px;
    border-radius:var(--r-pill);
    background:rgba(12,15,13,.82);
    color:var(--bone);
    font-size:11.5px;
    letter-spacing:.08em;
  }
  .card-body{padding:24px}
  @media (min-width:768px){.card-body{padding:28px}}
  .card-body h3{margin:0 0 10px;font-size:20px;font-weight:600;line-height:1.4}
  .card-body p{font-size:14.5px;line-height:1.85;color:var(--gray);margin-bottom:16px}
  .mini-list{border-top:1px solid var(--line)}
  .mini-list li{
    display:grid;
    grid-template-columns:auto 1fr;
    gap:10px;
    padding:10px 0;
    border-bottom:1px solid var(--line);
    font-size:13.5px;
    line-height:1.7;
    color:var(--gray);
  }
  .mini-list li .m-line{color:var(--green);font-family:var(--mono);font-size:12px;padding-top:2px}

  /* ---------- FAQ ---------- */
  .faq-wrap{display:grid;gap:32px;grid-template-columns:1fr}
  @media (min-width:1024px){.faq-wrap{grid-template-columns:.8fr 1.6fr;gap:64px;align-items:start}}
  .faq-aside{position:sticky;top:96px}
  @media (max-width:1023px){.faq-aside{position:static}}
  .faq{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    list-style:none;
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:20px;
    padding:22px 0;
    font-size:18px;
    font-weight:600;
    line-height:1.55;
    cursor:pointer;
    transition:color var(--t);
  }
  .faq-q::-webkit-details-marker{display:none}
  .faq-q:hover{color:var(--green)}
  .faq-q .pm{
    position:relative;
    flex:none;
    width:22px;height:22px;
    margin-top:4px;
    border:1px solid var(--line);
    border-radius:50%;
    transition:transform var(--t),border-color var(--t),background var(--t);
  }
  .faq-q .pm::before,
  .faq-q .pm::after{
    content:"";
    position:absolute;
    left:50%;top:50%;
    background:var(--ink);
    transform:translate(-50%,-50%);
  }
  .faq-q .pm::before{width:10px;height:1px}
  .faq-q .pm::after{width:1px;height:10px;transition:opacity var(--t)}
  .faq-item[open] .faq-q .pm{transform:rotate(180deg);border-color:var(--ink);background:var(--lime)}
  .faq-item[open] .faq-q .pm::after{opacity:0}
  .faq-a{
    padding:0 42px 24px 0;
    max-width:68ch;
    font-size:15px;
    line-height:1.9;
    color:var(--gray);
  }
  .faq-a strong{color:var(--ink);font-weight:600}

  /* ---------- CTA ---------- */
  .cta-block{
    position:relative;
    overflow:hidden;
    background:var(--green);
    color:var(--bone);
    border-radius:6px;
    padding:40px 24px;
  }
  .cta-block .bg{
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center;
    opacity:.16;
    pointer-events:none;
  }
  .cta-inner{position:relative;display:grid;gap:26px;grid-template-columns:1fr}
  @media (min-width:900px){.cta-inner{grid-template-columns:1.5fr .9fr;align-items:center;gap:40px}}
  .cta-block h2{
    font-family:var(--serif);
    font-weight:700;
    font-size:clamp(1.5rem,2.8vw,2.3rem);
    line-height:1.25;
    margin:0 0 12px;
  }
  .cta-block p{font-size:14.5px;line-height:1.85;color:rgba(244,241,233,.74);max-width:48ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px}
  @media (min-width:900px){.cta-actions{justify-content:flex-end}}
  .cta-note{
    position:relative;
    margin-top:26px;
    padding-top:16px;
    border-top:1px solid rgba(244,241,233,.2);
    font-size:12px;
    letter-spacing:.04em;
    color:rgba(244,241,233,.6);
  }

  /* ---------- Footer ---------- */
  .site-footer{
    margin-top:64px;
    background:var(--ink);
    color:var(--bone);
    padding:60px 0 24px;
  }
  @media (min-width:1024px){.site-footer{padding:72px 0 26px}}
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:36px;
  }
  @media (min-width:900px){.footer-grid{grid-template-columns:5fr 3fr 4fr;gap:48px}}
  .f-brand .b1{
    font-family:var(--serif);
    font-weight:700;
    font-size:22px;
    letter-spacing:.05em;
    color:var(--bone);
  }
  .f-brand .b2{
    font-size:10.5px;
    font-weight:300;
    letter-spacing:.34em;
    color:rgba(244,241,233,.62);
    margin-top:5px;
  }
  .f-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
  .f-tags span{
    font-size:11.5px;
    letter-spacing:.08em;
    color:rgba(244,241,233,.78);
    border:1px solid rgba(244,241,233,.24);
    border-radius:var(--r-pill);
    padding:5px 12px;
  }
  .f-col-title{
    font-size:11.5px;
    letter-spacing:.2em;
    color:rgba(244,241,233,.5);
    margin-bottom:16px;
  }
  .f-links{display:grid;gap:10px}
  .f-links a{
    font-size:14px;
    color:rgba(244,241,233,.82);
    width:fit-content;
    transition:color var(--t),border-color var(--t);
    border-bottom:1px solid transparent;
    padding-bottom:1px;
  }
  .f-links a:hover{color:var(--lime);border-color:var(--lime)}
  .f-contact{
    font-size:13.5px;
    line-height:2;
    color:rgba(244,241,233,.74);
  }
  .f-qr{display:flex;align-items:center;gap:14px;margin-top:20px;font-size:11.5px;line-height:1.7;color:rgba(244,241,233,.6)}
  .qr-mini{
    width:64px;height:64px;
    flex:none;
    border:1px solid rgba(244,241,233,.35);
    border-radius:2px;
    background-image:repeating-linear-gradient(45deg,rgba(244,241,233,.4) 0 2px,transparent 2px 7px);
    background-color:rgba(244,241,233,.06);
  }
  .footer-bottom{
    margin-top:44px;
    padding-top:20px;
    border-top:1px solid rgba(244,241,233,.16);
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    font-size:12px;
    letter-spacing:.04em;
    color:rgba(244,241,233,.55);
  }
  .fb-links{display:flex;gap:20px}
  .fb-links a{border-bottom:1px solid transparent;padding-bottom:1px}
  .fb-links a:hover{color:var(--lime);border-color:var(--lime)}

  /* ---------- Mobile bar ---------- */
  .mobile-bar{
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:70;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:10px 16px;
    background:rgba(244,241,233,.98);
    border-top:1px solid var(--line);
    box-shadow:0 -8px 30px rgba(12,15,13,.08);
  }
  .mobile-bar .mb-meta{display:flex;flex-direction:column;line-height:1.35}
  .mobile-bar .mb-meta .t{font-size:12px;letter-spacing:.08em;color:var(--gray)}
  .mobile-bar .mb-meta .v{font-family:var(--mono);font-size:12.5px;color:var(--ink)}
  @media (min-width:768px){.mobile-bar{display:none}}
  @media (max-width:767px){
    .site-body{padding-bottom:74px}
  }

  /* ---------- Motion ---------- */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity 620ms ease,transform 620ms cubic-bezier(.22,.61,.36,1)}
  .reveal.in{opacity:1;transform:none}
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    .reveal{opacity:1;transform:none;transition:none}
    .btn,.text-link,.main-nav a,.drawer,.faq-q .pm,.card-media img{transition:none}
  }

/* roulang page: category5 */
:root{
    --ink:#0C0F0D;
    --green:#0E3B2E;
    --lime:#D8FF3E;
    --bone:#F4F1E9;
    --paper:#E9E5D9;
    --text:#5F655B;
    --line:#D5D1C4;
    --clay:#C65A32;
    --serif:"Noto Serif SC",Georgia,"Songti SC",serif;
    --sans:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
    --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bone);
    color:var(--ink);
    font-family:var(--sans);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit}
  input,select,textarea{font-family:inherit}
  ::selection{background:var(--lime);color:var(--ink)}
  :focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px}

  .container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 32px}}
  @media (min-width:1280px){.container{padding:0 48px}}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(244,241,233,.94);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;gap:28px;height:80px}
  .brand{display:flex;flex-direction:column;line-height:1.1;flex:0 0 auto}
  .brand-line1{font-family:var(--serif);font-weight:900;font-size:19px;letter-spacing:.02em;color:var(--ink)}
  .brand-line2{font-size:11px;letter-spacing:.22em;color:var(--text);margin-top:3px}
  .main-nav{display:flex;align-items:center;gap:30px;margin-left:auto}
  .main-nav a{
    position:relative;
    padding:8px 0;
    font-size:13.5px;
    letter-spacing:.06em;
    color:rgba(12,15,13,.72);
    transition:color .22s var(--ease);
    white-space:nowrap;
  }
  .main-nav a::before{
    content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
    background:var(--ink);transform:scaleX(0);transform-origin:left;
    transition:transform .24s var(--ease);
  }
  .main-nav a:hover{color:var(--ink)}
  .main-nav a:hover::before{transform:scaleX(1)}
  .main-nav a.active{color:var(--ink);font-weight:500}
  .main-nav a.active::after{
    content:"";position:absolute;left:50%;bottom:-7px;width:4px;height:4px;
    border-radius:50%;background:var(--lime);
    transform:translateX(-50%);
    box-shadow:0 0 0 2px rgba(216,255,62,.28);
  }
  .header-cta{flex:0 0 auto;margin-left:8px}
  .nav-toggle{
    display:none;margin-left:auto;width:44px;height:44px;
    align-items:center;justify-content:center;
    background:transparent;border:1px solid var(--line);border-radius:999px;
    cursor:pointer;color:var(--ink);transition:border-color .22s var(--ease),background .22s var(--ease);
  }
  .nav-toggle:hover{border-color:var(--ink);background:var(--paper)}
  .nav-toggle span{display:block;width:16px;height:1.5px;background:currentColor;position:relative}
  .nav-toggle span::before,.nav-toggle span::after{
    content:"";position:absolute;left:0;width:16px;height:1.5px;background:currentColor;
    transition:transform .24s var(--ease);
  }
  .nav-toggle span::before{top:-5px}
  .nav-toggle span::after{top:5px}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:11px 22px;border-radius:999px;
    font-size:14px;font-weight:500;letter-spacing:.04em;
    border:1px solid transparent;cursor:pointer;
    transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .18s var(--ease);
  }
  .btn .arrow{transition:transform .24s var(--ease)}
  .btn:hover .arrow{transform:translateX(4px)}
  .btn-primary{background:var(--ink);color:var(--bone)}
  .btn-primary:hover{background:var(--lime);color:var(--ink);border-color:var(--ink)}
  .btn-primary:active{transform:scale(.98)}
  .btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
  .btn-ghost:hover{background:var(--ink);color:var(--bone)}
  .btn-light{background:var(--bone);color:var(--ink);border-color:var(--bone)}
  .btn-light:hover{background:var(--lime);border-color:var(--lime);color:var(--ink)}
  .btn-outline-light{background:transparent;color:var(--bone);border-color:rgba(244,241,233,.5)}
  .btn-outline-light:hover{background:rgba(244,241,233,.12);border-color:var(--bone)}
  .link-underline{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;color:var(--green);
    border-bottom:1px solid currentColor;padding-bottom:2px;
    transition:color .22s var(--ease);
  }
  .link-underline:hover{color:var(--ink);border-color:var(--lime)}
  .link-underline .arrow{transition:transform .24s var(--ease)}
  .link-underline:hover .arrow{transform:translateX(4px)}

  /* ---------- page head ---------- */
  .page-head{padding:44px 0 0}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;letter-spacing:.04em;color:var(--text)}
  .crumb .sep{color:var(--line)}
  .crumb a:hover{color:var(--green)}
  .kicker{
    margin-top:30px;display:flex;align-items:center;gap:12px;
    font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--green);
  }
  .kicker::before{content:"";width:30px;height:1px;background:var(--green)}
  .page-title{
    margin:16px 0 0;
    font-family:var(--serif);font-weight:900;
    font-size:clamp(2rem,4.6vw,3.5rem);
    line-height:1.12;letter-spacing:.01em;
  }
  .page-title .accent{color:var(--green)}
  .page-sub{margin:18px 0 0;max-width:64ch;font-size:16.5px;color:var(--text)}
  .rule{height:1px;background:var(--line);margin-top:36px}

  /* ---------- sections ---------- */
  .section{padding-top:clamp(56px,7vw,100px)}
  .sec-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:16px 24px;margin-bottom:30px}
  .sec-title{font-family:var(--serif);font-weight:700;font-size:clamp(1.5rem,2.6vw,2.15rem);line-height:1.25;margin:0}
  .sec-note{font-size:13px;letter-spacing:.04em;color:var(--text);margin:0}

  /* ---------- search panel ---------- */
  .search-panel{display:grid;grid-template-columns:1.4fr .6fr;gap:44px;align-items:end;padding-top:clamp(40px,5vw,64px)}
  .search-label{font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;color:var(--green)}
  .search-box{
    display:flex;align-items:center;gap:14px;
    margin-top:18px;padding-bottom:10px;
    border-bottom:1px solid var(--line);
    transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
  }
  .search-box:focus-within{border-color:var(--ink);box-shadow:0 3px 0 -2px rgba(216,255,62,.9)}
  .search-box .icon{flex:0 0 auto;color:var(--green)}
  .search-box input{
    flex:1 1 auto;min-width:0;
    border:0;background:transparent;outline:none;
    font-family:var(--serif);font-weight:600;
    font-size:clamp(1.1rem,2.4vw,1.45rem);
    color:var(--ink);padding:6px 0;
  }
  .search-box input::placeholder{color:#9AA096;font-weight:400;font-family:var(--sans);font-size:15px}
  .hot-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px}
  .hot-tags .label{font-size:12px;letter-spacing:.08em;color:var(--text)}
  .tag{
    display:inline-flex;align-items:center;min-height:34px;padding:6px 14px;
    border:1px solid var(--line);border-radius:999px;
    font-size:13px;color:var(--green);background:transparent;cursor:pointer;
    transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  }
  .tag:hover{background:var(--ink);color:var(--bone);border-color:var(--ink)}
  .search-visual{
    position:relative;overflow:hidden;border:1px solid var(--line);border-radius:4px;
    background:var(--paper);aspect-ratio:4/3;
  }
  .search-visual img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
  .search-visual:hover img{transform:scale(1.03)}
  .search-visual figcaption{
    position:absolute;left:0;right:0;bottom:0;
    padding:16px 18px;font-size:12.5px;line-height:1.6;
    color:var(--bone);
    background:linear-gradient(to top,rgba(12,15,13,.82),rgba(12,15,13,0));
  }
  .search-visual .corner{
    position:absolute;top:14px;left:14px;
    font-family:var(--mono);font-size:11px;letter-spacing:.14em;
    color:var(--bone);background:rgba(12,15,13,.66);padding:4px 9px;border-radius:2px;
  }

  /* ---------- topic grid ---------- */
  .topic-grid{
    display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
    gap:1px;background:var(--line);
    border:1px solid var(--line);border-radius:4px;overflow:hidden;
  }
  .topic-card{
    display:flex;flex-direction:column;gap:10px;
    background:var(--bone);padding:26px 24px;min-height:184px;
    transition:background .24s var(--ease);
  }
  .topic-card:hover{background:#FCFAF4}
  .topic-card .idx{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--green)}
  .topic-card h3{
    margin:0;font-size:17px;font-weight:600;line-height:1.5;
    display:flex;align-items:center;justify-content:space-between;gap:12px;
  }
  .topic-card h3 .arrow{color:var(--green);transition:transform .24s var(--ease);flex:0 0 auto}
  .topic-card:hover h3 .arrow{transform:translateX(4px)}
  .topic-card p{margin:0;font-size:13.5px;line-height:1.75;color:var(--text)}
  .topic-card .meta{margin-top:auto;padding-top:8px;font-size:12px;letter-spacing:.06em;color:#8C918A}
  .topic-empty{
    grid-column:1/-1;background:var(--bone);
    border:0;padding:48px 24px;text-align:center;
  }
  .topic-empty p{margin:12px 0 0;font-size:14.5px;color:var(--text)}

  /* ---------- scene list ---------- */
  .scene-wrap{display:grid;grid-template-columns:280px minmax(0,1fr);gap:56px}
  .scene-side{position:sticky;top:108px;align-self:start}
  .scene-side h2{font-family:var(--serif);font-weight:700;font-size:clamp(1.4rem,2.2vw,1.9rem);line-height:1.3;margin:0 0 14px}
  .scene-side p{margin:0 0 22px;font-size:14px;color:var(--text)}
  .scene-side figure{margin:0;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--paper)}
  .scene-side figure img{width:100%;aspect-ratio:3/2;object-fit:cover}
  .scene-side figcaption{padding:12px 14px;font-size:12px;line-height:1.7;color:var(--text);border-top:1px solid var(--line)}
  .scene-list{border-top:1px solid var(--line)}
  .scene-row{
    display:grid;grid-template-columns:104px minmax(0,1fr) auto;gap:22px;
    align-items:start;padding:24px 0;border-bottom:1px solid var(--line);
    transition:background .24s var(--ease);
  }
  .scene-row:hover{background:rgba(233,229,217,.5)}
  .scene-row .cat{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--green);padding-top:5px}
  .scene-row h3{margin:0 0 6px;font-size:17px;font-weight:600;line-height:1.5}
  .scene-row p{margin:0;font-size:14px;line-height:1.8;color:var(--text);max-width:62ch}
  .scene-row .tm{font-family:var(--mono);font-size:12px;color:#8C918A;white-space:nowrap;padding-top:5px}

  /* ---------- faq ---------- */
  .faq-wrap{display:grid;grid-template-columns:280px minmax(0,1fr);gap:56px}
  .faq-side{position:sticky;top:108px;align-self:start}
  .faq-side h2{font-family:var(--serif);font-weight:700;font-size:clamp(1.4rem,2.2vw,1.9rem);line-height:1.3;margin:0 0 14px}
  .faq-side p{margin:0 0 20px;font-size:14px;color:var(--text)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:first-child{border-top:1px solid var(--line)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:22px 0;background:none;border:0;text-align:left;cursor:pointer;
    font-size:18px;font-weight:600;line-height:1.6;color:var(--ink);
    min-height:44px;transition:color .22s var(--ease);
  }
  .faq-q:hover{color:var(--green)}
  .faq-q .plus{position:relative;flex:0 0 16px;width:16px;height:16px;transition:transform .26s var(--ease)}
  .faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--green);border-radius:1px}
  .faq-q .plus::before{left:0;right:0;top:7.25px;height:1.5px}
  .faq-q .plus::after{top:0;bottom:0;left:7.25px;width:1.5px}
  .faq-item.open .faq-q .plus{transform:rotate(45deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
  .faq-a p{margin:0 0 22px;font-size:15.5px;line-height:1.85;color:var(--text);max-width:68ch}

  /* ---------- feedback form ---------- */
  .form-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
  .form-intro h2{font-family:var(--serif);font-weight:700;font-size:clamp(1.4rem,2.2vw,1.9rem);line-height:1.3;margin:0 0 14px}
  .form-intro p{margin:0 0 18px;font-size:14.5px;line-height:1.85;color:var(--text);max-width:46ch}
  .form-points{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
  .form-points li{
    display:flex;gap:12px;align-items:baseline;
    padding:14px 0;border-bottom:1px solid var(--line);
    font-size:14px;color:var(--text);
  }
  .form-points li .n{font-family:var(--mono);font-size:11.5px;color:var(--green);letter-spacing:.1em;flex:0 0 auto}
  .feedback{
    background:var(--paper);border:1px solid var(--line);border-radius:4px;
    padding:clamp(24px,3.2vw,40px);
  }
  .field{margin-bottom:26px}
  .field:last-of-type{margin-bottom:8px}
  .field label{display:block;font-size:12px;letter-spacing:.1em;color:var(--text);margin-bottom:8px}
  .field input,.field select,.field textarea{
    width:100%;background:transparent;border:0;border-bottom:1px solid #BDB8AA;
    padding:10px 2px;font-size:15px;color:var(--ink);border-radius:0;
    transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--green) 50%),linear-gradient(135deg,var(--green) 50%,transparent 50%);background-position:calc(100% - 14px) 19px,calc(100% - 9px) 19px;background-size:5px 5px;background-repeat:no-repeat;padding-right:30px}
  .field textarea{min-height:120px;resize:vertical;line-height:1.75}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-bottom-color:var(--ink);box-shadow:0 0 0 3px rgba(216,255,62,.4);
  }
  .field .hint{display:block;margin-top:8px;font-size:12px;color:#8C918A;line-height:1.7}
  .form-footer{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:24px}
  .form-msg{
    display:none;margin-top:20px;padding:14px 16px;
    border:1px solid var(--green);border-left:3px solid var(--green);
    background:rgba(216,255,62,.16);color:var(--green);
    font-size:14px;line-height:1.7;
  }
  .form-msg.show{display:block}
  .form-msg.error{border-color:var(--clay);border-left-color:var(--clay);background:rgba(198,90,50,.08);color:var(--clay)}

  /* ---------- cta band ---------- */
  .cta-band{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
    background:var(--green);color:var(--bone);border-radius:4px;
    padding:clamp(28px,4vw,52px);
  }
  .cta-band h2{font-family:var(--serif);font-weight:700;font-size:clamp(1.4rem,2.6vw,2.2rem);line-height:1.3;margin:0 0 10px;color:var(--bone)}
  .cta-band p{margin:0;font-size:14.5px;line-height:1.8;color:rgba(244,241,233,.78);max-width:52ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink);color:var(--bone);margin-top:clamp(64px,8vw,112px);padding:clamp(44px,6vw,72px) 0 0}
  .footer-grid{display:grid;grid-template-columns:5fr 3fr 4fr;gap:40px}
  .f-brand .b1{font-family:var(--serif);font-weight:900;font-size:22px;letter-spacing:.02em;line-height:1.2}
  .f-brand .b2{font-size:11.5px;letter-spacing:.24em;color:rgba(244,241,233,.62);margin-top:5px}
  .f-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
  .f-tags span{font-size:11.5px;letter-spacing:.06em;padding:5px 11px;border:1px solid rgba(244,241,233,.22);border-radius:999px;color:rgba(244,241,233,.78)}
  .f-col-title{font-size:12px;letter-spacing:.16em;color:rgba(244,241,233,.48);margin-bottom:16px}
  .f-links{display:grid;grid-template-columns:1fr 1fr;gap:10px 22px}
  .f-links a{font-size:13.5px;color:rgba(244,241,233,.8);transition:color .2s var(--ease)}
  .f-links a:hover{color:var(--lime)}
  .f-contact{font-size:13px;line-height:2;color:rgba(244,241,233,.8)}
  .f-qr{display:flex;align-items:center;gap:12px;margin-top:18px;font-size:12px;line-height:1.6;color:rgba(244,241,233,.6)}
  .qr-mini{width:62px;height:62px;flex:0 0 62px;border:1px solid rgba(244,241,233,.28);border-radius:2px;background:repeating-linear-gradient(45deg,rgba(244,241,233,.16) 0 4px,transparent 4px 8px)}
  .footer-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
    margin-top:44px;padding:22px 0 28px;
    border-top:1px solid rgba(244,241,233,.14);
    font-size:12px;color:rgba(244,241,233,.55);
  }
  .fb-links{display:flex;flex-wrap:wrap;gap:20px}
  .fb-links a{color:rgba(244,241,233,.65);transition:color .2s var(--ease)}
  .fb-links a:hover{color:var(--lime)}

  /* ---------- mobile drawer ---------- */
  .mobile-drawer{
    position:fixed;inset:0;z-index:80;background:var(--bone);
    padding:28px 22px 40px;display:flex;flex-direction:column;
    opacity:0;pointer-events:none;transform:translateY(-10px);
    transition:opacity .26s var(--ease),transform .26s var(--ease);
    overflow-y:auto;
  }
  .mobile-drawer.open{opacity:1;pointer-events:auto;transform:none}
  .drawer-top{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px}
  .drawer-close{
    width:44px;height:44px;flex:0 0 44px;display:flex;align-items:center;justify-content:center;
    background:transparent;border:1px solid var(--line);border-radius:999px;cursor:pointer;
    font-size:20px;line-height:1;color:var(--ink);
  }
  .drawer-close:hover{border-color:var(--ink)}
  .drawer-link{
    display:flex;align-items:baseline;gap:14px;
    padding:16px 0;border-bottom:1px solid var(--line);
    font-family:var(--serif);font-weight:700;font-size:27px;line-height:1.3;color:var(--ink);
  }
  .drawer-link .num{font-family:var(--mono);font-size:11.5px;font-weight:400;letter-spacing:.12em;color:var(--green)}
  .drawer-link.active{color:var(--green)}
  .drawer-cta{margin-top:28px}
  .drawer-cta .btn{width:100%}

  /* ---------- mobile sticky bar ---------- */
  .mobile-bar{
    display:none;position:fixed;left:0;right:0;bottom:0;z-index:60;
    align-items:center;justify-content:space-between;gap:12px;
    background:var(--ink);color:var(--bone);padding:10px 16px;
    box-shadow:0 -8px 30px rgba(12,15,13,.08);
  }
  .mobile-bar .mb-meta{font-size:11.5px;line-height:1.5;letter-spacing:.04em;color:rgba(244,241,233,.72)}
  .mobile-bar .mb-meta strong{display:block;font-family:var(--mono);font-size:12.5px;letter-spacing:.08em;color:var(--bone);font-weight:500}
  .mobile-bar .btn{padding:9px 18px;min-height:40px;font-size:13px}

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    .main-nav,.header-cta{display:none}
    .nav-toggle{display:flex}
    .search-panel{grid-template-columns:1fr;gap:30px;align-items:start}
    .search-visual{max-width:520px;aspect-ratio:16/9}
    .topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .scene-wrap,.faq-wrap,.form-wrap{grid-template-columns:1fr;gap:32px}
    .scene-side,.faq-side{position:static}
    .scene-side figure{max-width:420px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  }
  @media (max-width:768px){
    .header-inner{height:66px;gap:16px}
    .brand-line1{font-size:17px}
    .page-head{padding-top:30px}
    .page-sub{font-size:15.5px}
    .topic-grid{grid-template-columns:1fr}
    .topic-card{min-height:0;padding:22px 20px}
    .scene-row{grid-template-columns:1fr;gap:8px}
    .scene-row .tm{padding-top:0}
    .faq-q{font-size:16.5px}
    .cta-band{flex-direction:column;align-items:flex-start}
    .footer-grid{grid-template-columns:1fr;gap:30px}
    .f-links{grid-template-columns:1fr 1fr}
    .mobile-bar{display:flex}
    body{padding-bottom:76px}
  }
  @media (max-width:520px){
    .container{padding:0 18px}
    .hot-tags{gap:8px}
    .tag{font-size:12.5px;padding:6px 12px}
    .cta-actions{width:100%}
    .cta-actions .btn{flex:1 1 100%}
    .footer-bottom{font-size:11.5px}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  }