/* roulang page: index */
:root{
  --track:#0E7C66;
  --track-deep:#0A5F4E;
  --sunset:#FF7A45;
  --ink:#13241D;
  --sand:#F6F1E7;
  --card:#FFFDF8;
  --line:#DED6C8;
  --muted:#5E6B63;
  --soft:#DCEDE6;
  --warn:#B5442C;
  --radius:18px;
  --shadow:0 10px 30px rgba(19,36,29,.06);
  --shadow-hover:0 16px 36px rgba(19,36,29,.13);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--sand);
  color:var(--ink);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:0}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--card);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;gap:18px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--track);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px;letter-spacing:0}
.brand-text strong{display:block;font-size:15px;line-height:1.25;font-weight:800}
.brand-text em{display:block;font-style:normal;font-size:12px;line-height:1.5;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{padding:8px 12px;border-radius:999px;font-size:15px;color:var(--muted);transition:color .2s,background .2s;white-space:nowrap}
.nav-link:hover,.nav-link:focus-visible{color:var(--ink);background:var(--soft);outline:none}
.nav-link.active{color:var(--track);background:var(--soft);font-weight:600}
.nav-cta{margin-left:10px;white-space:nowrap}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:var(--card);cursor:pointer;padding:0;place-items:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);margin:3px auto;border-radius:2px;transition:transform .2s,opacity .2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.drawer{display:none;border-top:1px solid var(--line);background:var(--card);padding:14px 24px 22px}
.drawer.open{display:block}
.drawer a{display:block;padding:12px 4px;font-size:16px;color:var(--ink);border-bottom:1px solid rgba(222,214,200,.6);min-height:44px}
.drawer a:last-of-type{border-bottom:0}
.drawer .btn{width:100%;margin-top:14px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;min-height:44px;transition:transform .2s,background .2s,color .2s,border-color .2s,box-shadow .2s}
.btn:focus-visible{outline:3px solid var(--soft);outline-offset:2px}
.btn-primary{background:var(--track);color:#fff}
.btn-primary:hover{background:var(--track-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-sunset{background:var(--sunset);color:var(--ink);font-weight:700}
.btn-sunset:hover{background:#ff6a29;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,69,.32)}
.btn-sunset:active{transform:translateY(1px)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-outline-light{border-color:rgba(255,255,255,.7);color:#fff;background:rgba(255,255,255,.06)}
.btn-outline-light:hover{background:rgba(255,255,255,.18);transform:translateY(-1px)}
.btn-lg{padding:14px 28px;font-size:16px}
.btn-sm{padding:8px 16px;font-size:14px;min-height:38px}
.btn-block{width:100%}

/* ---------- tags ---------- */
.tag{display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;background:var(--soft);color:var(--track);font-size:12.5px;font-weight:600;line-height:1.6}
.tag-warn{background:#FBEAE5;color:var(--warn)}
.tag-solid{background:rgba(255,255,255,.16);color:#fff}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:70px 0 78px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.42}
.hero-veil{position:absolute;inset:0;background:linear-gradient(160deg,rgba(19,36,29,.9),rgba(14,124,102,.66))}
.hero-inner{position:relative;z-index:2}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);font-size:13px;font-weight:600;color:#eaf6f2}
.hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.24;font-weight:800;margin:20px 0 18px;max-width:900px}
.hero-lead{max-width:780px;font-size:17px;line-height:1.9;color:rgba(255,255,255,.9);margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:42px}
.hero-bento{display:grid;grid-template-columns:1.05fr .9fr 1.05fr;gap:18px}
.bento-card{background:rgba(255,253,248,.97);color:var(--ink);border-radius:18px;padding:22px;border:1px solid rgba(255,255,255,.34);box-shadow:0 18px 40px rgba(0,0,0,.16)}
.bento-title{font-size:15px;font-weight:800;margin-bottom:4px}
.bento-sub{font-size:13px;color:var(--muted);margin-bottom:14px}
.bento-row{display:flex;align-items:center;justify-content:space-between;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px}
.bento-row:last-of-type{border-bottom:0}
.bento-row span:first-child{color:var(--muted)}
.bento-row span:last-child{font-weight:700;color:var(--ink)}
.bento-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.bento-photo{border-radius:18px;overflow:hidden;position:relative;min-height:230px}
.bento-photo img{width:100%;height:100%;object-fit:cover;min-height:230px}
.bento-photo-cap{position:absolute;left:0;right:0;bottom:0;padding:16px 18px;background:linear-gradient(180deg,rgba(19,36,29,0),rgba(19,36,29,.86));color:#fff;font-size:13.5px;line-height:1.6}
.bento-dl{display:grid;gap:10px}

/* ---------- sections ---------- */
.section{padding:88px 0}
.bg-sand{background:var(--sand)}
.bg-soft{background:var(--soft)}
.bg-card{background:var(--card)}
.bg-ink{background:var(--ink);color:#fff}
.section-head{max-width:800px;margin-bottom:44px}
.section-kicker{display:inline-block;font-size:13px;font-weight:700;color:var(--track);background:var(--soft);padding:5px 13px;border-radius:999px;margin-bottom:14px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.36;font-weight:800;margin-bottom:14px}
.section-sub{color:var(--muted);font-size:16px;line-height:1.9}
.bg-ink .section-kicker{background:rgba(220,237,230,.16);color:#9fe3d2}
.bg-ink .section-sub{color:rgba(255,255,255,.76)}
.bg-ink h2{color:#fff}

/* ---------- cards ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.card:hover{transform:translateY(-3px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.card h3{font-size:20px;line-height:1.5;font-weight:800;margin-bottom:10px}
.card p{font-size:15px;line-height:1.85;color:var(--muted)}

/* matrix */
.matrix-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.matrix-wide{grid-column:span 2}
.icon-badge{width:44px;height:44px;border-radius:12px;background:var(--soft);color:var(--track);display:grid;place-items:center;font-weight:800;font-size:17px;margin-bottom:16px}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* path */
.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.path-card{position:relative;padding-top:34px}
.path-step{position:absolute;top:-16px;left:26px;width:38px;height:38px;border-radius:999px;background:var(--track);color:#fff;display:grid;place-items:center;font-weight:800;font-size:15px}
.path-dist{font-size:13px;font-weight:700;color:var(--sunset);margin-bottom:6px}
.path-list{list-style:none;padding:0;margin:14px 0 0}
.path-list li{position:relative;padding-left:18px;font-size:14.5px;line-height:1.8;color:var(--muted);margin-bottom:8px}
.path-list li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:999px;background:var(--track);opacity:.7}

/* stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat-card{display:flex;gap:14px;align-items:flex-start;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:18px;padding:22px;transition:background .2s,transform .2s,border-color .2s}
.stat-card:hover{background:rgba(255,255,255,.1);transform:translateY(-3px);border-color:rgba(159,227,210,.6)}
.stat-ico{width:42px;height:42px;flex:0 0 42px;border-radius:12px;background:rgba(220,237,230,.16);color:#9fe3d2;display:grid;place-items:center;font-weight:800}
.stat-val{font-size:19px;font-weight:800;color:#fff;line-height:1.4}
.stat-label{font-size:13.5px;color:rgba(255,255,255,.7);line-height:1.7;margin-top:2px}

/* flow */
.flow-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.flow-item{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px 20px;box-shadow:var(--shadow);transition:transform .2s,border-color .2s,box-shadow .2s}
.flow-item:hover{transform:translateY(-3px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.flow-num{font-size:13px;font-weight:800;color:var(--sunset);letter-spacing:.08em;margin-bottom:8px}
.flow-item h3{font-size:16.5px;font-weight:800;line-height:1.5;margin-bottom:8px}
.flow-item p{font-size:14px;color:var(--muted);line-height:1.8}

/* pace */
.pace-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pace-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow);transition:transform .2s,border-color .2s}
.pace-card:hover{transform:translateY(-3px);border-color:var(--track)}
.pace-name{font-size:17px;font-weight:800;margin-bottom:6px}
.pace-range{font-size:22px;font-weight:800;color:var(--track);letter-spacing:.01em}
.pace-unit{font-size:12.5px;color:var(--muted);margin-bottom:12px}
.pace-desc{font-size:14px;color:var(--muted);line-height:1.8}

/* routes */
.routes-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.route-card{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s;display:flex;flex-direction:column}
.route-card:hover{transform:translateY(-3px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.route-card img{width:100%;height:190px;object-fit:cover}
.route-card.route-lg img{height:250px}
.route-body{padding:20px}
.route-body h3{font-size:18px;font-weight:800;margin-bottom:8px}
.route-body p{font-size:14px;color:var(--muted);line-height:1.8}
.route-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.span-7{grid-column:span 7}
.span-5{grid-column:span 5}
.span-3{grid-column:span 3}

/* safety */
.safety-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.safety-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow);transition:transform .2s,border-color .2s}
.safety-card:hover{transform:translateY(-3px);border-color:var(--sunset)}
.safety-card h3{font-size:17.5px;font-weight:800;margin:14px 0 8px;line-height:1.5}
.safety-card p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* news */
.news-grid{display:grid;grid-template-columns:1.12fr .88fr;grid-template-rows:auto auto;gap:20px}
.news-feature{grid-row:1 / span 2;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.news-feature:hover{transform:translateY(-3px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.news-feature img{width:100%;height:230px;object-fit:cover}
.news-feature-body{padding:24px;display:flex;flex-direction:column;gap:10px}
.news-feature-body h3{font-size:22px;line-height:1.5;font-weight:800}
.news-feature-body p{font-size:15px;color:var(--muted);line-height:1.85}
.news-mini{display:flex;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.news-mini:hover{transform:translateY(-3px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.news-mini-thumb{width:92px;height:92px;flex:0 0 92px;border-radius:14px;overflow:hidden}
.news-mini-thumb img{width:100%;height:100%;object-fit:cover}
.news-mini-body h3{font-size:16.5px;font-weight:800;line-height:1.55;margin-bottom:6px}
.news-mini-body p{font-size:13.5px;color:var(--muted);line-height:1.75}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:12.5px;color:var(--muted);margin-top:8px}
.news-empty{background:var(--card);border:1px dashed var(--line);border-radius:18px;padding:40px 24px;text-align:center;color:var(--muted);font-size:15px}

/* category entry */
.cat-entry{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:34px;box-shadow:var(--shadow)}
.cat-entry h3{font-size:26px;font-weight:800;line-height:1.4;margin-bottom:12px}
.cat-entry p{color:var(--muted);font-size:15.5px;line-height:1.9}
.cat-points{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px}
.cat-points li{font-size:14.5px;color:var(--muted);padding-left:20px;position:relative}
.cat-points li::before{content:"·";position:absolute;left:6px;top:-2px;color:var(--track);font-weight:800;font-size:20px}
.cat-entry-side{background:var(--soft);border-radius:18px;padding:26px}
.cat-entry-side h4{font-size:16px;font-weight:800;margin-bottom:10px}
.cat-entry-side p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:18px}

/* adapt */
.adapt-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.adapt-item{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;transition:transform .2s,border-color .2s}
.adapt-item:hover{transform:translateY(-3px);border-color:var(--track)}
.adapt-item h3{font-size:16.5px;font-weight:800;margin-bottom:8px}
.adapt-item p{font-size:14px;color:var(--muted);line-height:1.8}

/* faq */
.faq-list{display:grid;gap:12px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:0 22px;transition:border-color .2s,box-shadow .2s}
.faq-item[open]{border-color:var(--track);box-shadow:var(--shadow)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 0;font-size:16.5px;font-weight:700;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:focus-visible{outline:3px solid var(--soft);outline-offset:4px;border-radius:8px}
.faq-plus{width:26px;height:26px;flex:0 0 26px;border-radius:999px;background:var(--soft);color:var(--track);display:grid;place-items:center;font-weight:800;font-size:16px;transition:transform .2s,background .2s}
.faq-item[open] .faq-plus{transform:rotate(45deg);background:var(--track);color:#fff}
.faq-answer{padding:0 0 20px;font-size:15px;line-height:1.9;color:var(--muted)}

/* guarantee */
.guarantee{background:var(--ink);color:#fff;padding:52px 0}
.guarantee-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.guarantee-item{display:flex;gap:14px;align-items:flex-start}
.guarantee-item strong{display:block;font-size:16px;font-weight:800;margin-bottom:6px}
.guarantee-item span{font-size:14px;color:rgba(255,255,255,.72);line-height:1.8}
.g-dot{width:10px;height:10px;flex:0 0 10px;border-radius:999px;background:var(--sunset);margin-top:12px}

/* download */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.dl-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .2s,border-color .2s,box-shadow .2s}
.dl-card:hover{transform:translateY(-4px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.dl-os{font-size:13px;font-weight:700;color:var(--track);background:var(--soft);display:inline-block;padding:4px 12px;border-radius:999px;margin-bottom:14px;align-self:flex-start}
.dl-card h3{font-size:20px;font-weight:800;margin-bottom:10px}
.dl-card p{font-size:14.5px;color:var(--muted);line-height:1.85;margin-bottom:18px}
.dl-card .btn{margin-top:auto}
.dl-note{font-size:12.5px;color:var(--muted);margin-top:12px;line-height:1.7}

/* checklist */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.check-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow)}
.check-card h3{font-size:18px;font-weight:800;margin-bottom:14px}
.check-list{list-style:none;padding:0;margin:0}
.check-list li{position:relative;padding-left:26px;font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:10px}
.check-list li::before{content:"✓";position:absolute;left:0;top:0;color:var(--track);font-weight:800}

/* final cta */
.cta-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:start}
.cta-panel{background:var(--track);color:#fff;border-radius:22px;padding:38px;box-shadow:0 18px 40px rgba(14,124,102,.24)}
.cta-panel h2{font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1.4;margin-bottom:14px}
.cta-panel p{font-size:15.5px;line-height:1.9;color:rgba(255,255,255,.88);margin-bottom:24px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:32px;box-shadow:var(--shadow)}
.form-card h3{font-size:20px;font-weight:800;margin-bottom:6px}
.form-hint{font-size:14px;color:var(--muted);margin-bottom:20px;line-height:1.8}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.field input,.field select{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:15px;color:var(--ink);transition:border-color .2s,box-shadow .2s}
.field input:focus,.field select:focus{outline:none;border-color:var(--track);box-shadow:0 0 0 3px rgba(220,237,230,.9)}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);line-height:1.7;margin-bottom:18px}
.check-row input{margin-top:5px;width:16px;height:16px;accent-color:var(--track)}

/* footer */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr 1fr 1.1fr;gap:32px;margin-bottom:44px}
.footer-brand .brand-mark{background:var(--sunset);color:var(--ink)}
.footer-brand strong{color:#fff;font-size:15px;display:block;line-height:1.3}
.footer-brand em{font-style:normal;font-size:12px;color:rgba(255,255,255,.55);display:block;line-height:1.5}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-top:14px;max-width:320px}
.footer-col h4{color:#fff;font-size:15px;font-weight:800;margin-bottom:14px}
.footer-col a,.footer-col p{display:block;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);padding:6px 0;transition:color .2s}
.footer-col a:hover,.footer-col a:focus-visible{color:var(--sunset);outline:none}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:22px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:grid;margin-left:auto}
  .hero-bento{grid-template-columns:1fr 1fr}
  .bento-photo{grid-column:span 2;min-height:200px}
  .bento-photo img{min-height:200px}
  .matrix-grid{grid-template-columns:repeat(2,1fr)}
  .matrix-wide{grid-column:span 2}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .flow-grid{grid-template-columns:repeat(3,1fr)}
  .pace-grid{grid-template-columns:repeat(2,1fr)}
  .safety-grid{grid-template-columns:repeat(2,1fr)}
  .routes-grid{grid-template-columns:repeat(6,1fr)}
  .span-7,.span-5{grid-column:span 6}
  .span-3{grid-column:span 3}
  .news-grid{grid-template-columns:1fr;grid-template-rows:auto}
  .news-feature{grid-row:auto}
  .cat-entry{grid-template-columns:1fr}
  .adapt-grid{grid-template-columns:repeat(2,1fr)}
  .guarantee-grid{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .cta-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:64px 0}
}
@media (max-width:768px){
  .hero{padding:52px 0 60px}
  .hero-lead{font-size:16px}
  .path-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr 1fr}
  .routes-grid{grid-template-columns:1fr}
  .span-7,.span-5,.span-3{grid-column:span 1}
  .route-card img,.route-card.route-lg img{height:200px}
  .cat-entry{padding:26px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .hero-bento{grid-template-columns:1fr}
  .bento-photo{grid-column:span 1}
  .matrix-grid{grid-template-columns:1fr}
  .matrix-wide{grid-column:span 1}
  .stats-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr}
  .pace-grid{grid-template-columns:1fr}
  .safety-grid{grid-template-columns:1fr}
  .adapt-grid{grid-template-columns:1fr}
  .news-mini{flex-direction:column}
  .news-mini-thumb{width:100%;height:160px;flex:none}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .cta-panel,.form-card{padding:24px}
  .brand-text strong{font-size:14px}
}

/* roulang page: article */
:root{
  --track:#0E7C66;
  --track-deep:#0A5F4E;
  --sunset:#FF7A45;
  --ink:#13241D;
  --sand:#F6F1E7;
  --card:#FFFDF8;
  --line:#DED6C8;
  --muted:#5E6B63;
  --soft:#DCEDE6;
  --warn:#B5442C;
  --radius:18px;
  --shadow:0 10px 30px rgba(19,36,29,.06);
  --shadow-hover:0 16px 36px rgba(19,36,29,.13);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--sand);
  color:var(--ink);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--card);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;gap:18px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--track);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
.brand-text strong{display:block;font-size:15px;line-height:1.25;font-weight:800}
.brand-text em{display:block;font-style:normal;font-size:12px;line-height:1.5;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{padding:8px 12px;border-radius:999px;font-size:15px;color:var(--muted);transition:color .2s,background .2s;white-space:nowrap}
.nav-link:hover,.nav-link:focus-visible{color:var(--ink);background:var(--soft);outline:none}
.nav-link.active{color:var(--track);background:var(--soft);font-weight:600}
.nav-cta{margin-left:10px;white-space:nowrap}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:var(--card);cursor:pointer;padding:0;place-items:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);margin:3px auto;border-radius:2px;transition:transform .2s,opacity .2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.drawer{display:none;border-top:1px solid var(--line);background:var(--card);padding:14px 24px 22px}
.drawer.open{display:block}
.drawer a{display:block;padding:12px 4px;font-size:16px;color:var(--ink);border-bottom:1px solid rgba(222,214,200,.6);min-height:44px}
.drawer a:last-of-type{border-bottom:0}
.drawer .btn{width:100%;margin-top:14px;border-bottom:0}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;min-height:44px;transition:transform .2s,background .2s,color .2s,border-color .2s,box-shadow .2s}
.btn:focus-visible{outline:3px solid var(--soft);outline-offset:2px}
.btn-primary{background:var(--track);color:#fff}
.btn-primary:hover{background:var(--track-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-sunset{background:var(--sunset);color:var(--ink);font-weight:700}
.btn-sunset:hover{background:#ff6a29;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,69,.32)}
.btn-sunset:active{transform:translateY(1px)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-outline-light{border-color:rgba(255,255,255,.7);color:#fff;background:rgba(255,255,255,.06)}
.btn-outline-light:hover{background:rgba(255,255,255,.18);transform:translateY(-1px)}
.btn-lg{padding:14px 28px;font-size:16px}
.btn-sm{padding:8px 16px;font-size:14px;min-height:38px}
.btn-block{width:100%}

/* ---------- tags ---------- */
.tag{display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;background:var(--soft);color:var(--track);font-size:12.5px;font-weight:600;line-height:1.6}
.tag-warn{background:#FBEAE5;color:var(--warn)}
.tag-solid{background:rgba(255,255,255,.16);color:#fff}

/* ---------- sections ---------- */
.section{padding:88px 0}
.bg-card{background:var(--card)}
.bg-soft{background:var(--soft)}
.bg-ink{background:var(--ink);color:#fff}
.section-head{max-width:800px;margin-bottom:44px}
.section-kicker{display:inline-block;font-size:13px;font-weight:700;color:var(--track);background:var(--soft);padding:5px 13px;border-radius:999px;margin-bottom:14px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.36;font-weight:800;margin-bottom:14px}
.section-sub{color:var(--muted);font-size:16px;line-height:1.9}
.bg-ink .section-kicker{background:rgba(220,237,230,.16);color:#9fe3d2}
.bg-ink .section-sub{color:rgba(255,255,255,.78)}
.bg-soft .section-kicker{background:#fff;color:var(--track)}

/* ---------- reading hero ---------- */
.read-hero{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:52px 0 56px}
.read-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.4}
.read-hero-veil{position:absolute;inset:0;background:linear-gradient(155deg,rgba(19,36,29,.92),rgba(14,124,102,.7))}
.read-hero-inner{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:22px}
.crumb a{color:rgba(255,255,255,.86);border-bottom:1px solid rgba(255,255,255,.3);transition:color .2s,border-color .2s}
.crumb a:hover,.crumb a:focus-visible{color:#fff;border-color:#fff;outline:none}
.crumb .sep{opacity:.5}
.read-hero h1{font-size:clamp(27px,3.9vw,44px);line-height:1.32;font-weight:800;max-width:900px;margin-bottom:18px}
.read-lead{max-width:820px;font-size:16.5px;line-height:1.9;color:rgba(255,255,255,.9);margin-bottom:22px}
.read-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.8)}
.read-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.5)}

/* ---------- article body ---------- */
.article-section{padding:72px 0 80px;background:var(--sand)}
.article-wrap{max-width:820px;margin:0 auto}
.article-card{background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:44px 48px}
.article-body{font-size:17.5px;line-height:1.95;color:var(--ink)}
.article-body > *:first-child{margin-top:0}
.article-body h2{font-size:clamp(21px,2.4vw,27px);font-weight:800;line-height:1.42;margin:2em 0 .7em;padding-left:14px;border-left:5px solid var(--track);color:var(--ink)}
.article-body h3{font-size:20px;font-weight:700;line-height:1.5;margin:1.7em 0 .6em;color:var(--track-deep)}
.article-body h4{font-size:17.5px;font-weight:700;margin:1.4em 0 .5em}
.article-body p{margin:0 0 1.05em}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.35em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.45em}
.article-body li::marker{color:var(--track)}
.article-body a{color:var(--track);border-bottom:1px solid rgba(14,124,102,.4);transition:color .2s,border-color .2s}
.article-body a:hover{color:var(--track-deep);border-color:var(--track-deep)}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body blockquote{margin:1.4em 0;padding:18px 22px;background:var(--soft);border-left:4px solid var(--track);border-radius:0 14px 14px 0;color:var(--track-deep);font-size:16.5px;line-height:1.9}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:1.3em 0;box-shadow:var(--shadow)}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:13.5px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:1.3em 0;font-size:15.5px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--soft);font-weight:700}
.article-body code{background:var(--soft);padding:2px 7px;border-radius:6px;font-size:14.5px}
.article-body hr{border:0;border-top:1px dashed var(--line);margin:2em 0}

/* ---------- empty state ---------- */
.empty-state{background:var(--card);border:1px dashed var(--line);border-radius:22px;padding:52px 32px;text-align:center;box-shadow:var(--shadow)}
.empty-state h2{font-size:24px;font-weight:800;margin-bottom:12px}
.empty-state p{color:var(--muted);max-width:560px;margin:0 auto 24px}

/* ---------- key points ---------- */
.point-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.point-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.point-card:hover{transform:translateY(-4px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.point-card h3{font-size:18px;font-weight:800;margin:14px 0 10px}
.point-card p{color:var(--muted);font-size:15px;line-height:1.85}
.point-icon{width:44px;height:44px;border-radius:13px;background:var(--soft);color:var(--track);display:grid;place-items:center;font-weight:800;font-size:16px}
.point-list{margin-top:14px;display:grid;gap:8px}
.point-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--muted)}
.point-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--track)}

/* ---------- safety + download ---------- */
.cta-block{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
.cta-block h2{font-size:clamp(23px,2.7vw,31px);line-height:1.4;font-weight:800;margin-bottom:14px}
.cta-block p{color:rgba(255,255,255,.8);font-size:16px;line-height:1.9;margin-bottom:18px}
.cta-notes{display:grid;gap:10px;margin-bottom:6px}
.cta-notes li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.86);line-height:1.8}
.cta-notes li::before{content:"✓";color:var(--sunset);font-weight:800;flex-shrink:0}
.dl-panel{background:var(--card);border-radius:var(--radius);padding:26px;box-shadow:0 20px 44px rgba(0,0,0,.22);color:var(--ink)}
.dl-panel h3{font-size:18px;font-weight:800;margin-bottom:6px}
.dl-panel p{font-size:14px;color:var(--muted);margin-bottom:18px;line-height:1.8}
.dl-list{display:grid;gap:12px}
.dl-btn{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 18px;border-radius:12px;border:1px solid var(--line);background:var(--sand);font-size:15px;font-weight:600;transition:background .2s,border-color .2s,transform .2s}
.dl-btn:hover{background:var(--soft);border-color:var(--track);transform:translateY(-2px)}
.dl-btn:focus-visible{outline:3px solid var(--soft);outline-offset:2px}
.dl-btn span:last-child{font-size:12.5px;color:var(--muted);font-weight:500}
.dl-btn.is-main{background:var(--sunset);border-color:var(--sunset);color:var(--ink)}
.dl-btn.is-main:hover{background:#ff6a29;border-color:#ff6a29}
.dl-btn.is-main span:last-child{color:rgba(19,36,29,.7)}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.post-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s;height:100%}
.post-card:hover{transform:translateY(-4px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--soft)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h3{font-size:17px;font-weight:800;line-height:1.55}
.post-body p{font-size:14.5px;color:var(--muted);line-height:1.8;flex:1}
.post-foot{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);flex-wrap:wrap}
.post-more{margin-top:4px;font-size:14px;font-weight:700;color:var(--track)}
.empty-soft{background:var(--card);border:1px dashed var(--line);border-radius:var(--radius);padding:36px;text-align:center;color:var(--muted)}

/* ---------- back bar ---------- */
.back-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 28px;box-shadow:var(--shadow)}
.back-bar p{color:var(--muted);font-size:15px}
.back-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand .brand{margin-bottom:16px}
.footer-about{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.66);max-width:340px}
.footer-col h4{font-size:15px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-col a,.footer-col p{display:block;font-size:14px;line-height:1.9;color:rgba(255,255,255,.68);padding:5px 0;min-height:34px;transition:color .2s}
.footer-col a:hover,.footer-col a:focus-visible{color:var(--sunset);outline:none}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:22px;font-size:13.5px;color:rgba(255,255,255,.5)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:grid;margin-left:auto}
  .section{padding:68px 0}
  .point-grid,.related-grid{grid-template-columns:repeat(2,1fr)}
  .cta-block{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .read-hero{padding:38px 0 42px}
  .article-section{padding:52px 0 60px}
  .article-card{padding:28px 22px}
  .article-body{font-size:17px;line-height:1.95}
  .section{padding:56px 0}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .point-grid,.related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .article-card{padding:22px 18px;border-radius:16px}
  .read-hero h1{font-size:26px}
  .back-bar{flex-direction:column;align-items:flex-start}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
  --track:#0E7C66;
  --track-deep:#0A5F4E;
  --sunset:#FF7A45;
  --ink:#13241D;
  --sand:#F6F1E7;
  --card:#FFFDF8;
  --line:#DED6C8;
  --muted:#5E6B63;
  --soft:#DCEDE6;
  --warn:#B5442C;
  --radius:18px;
  --shadow:0 10px 30px rgba(19,36,29,.06);
  --shadow-hover:0 16px 36px rgba(19,36,29,.13);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--sand);
  color:var(--ink);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:0}
p{margin:0}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--card);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;gap:18px;height:72px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--track);color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
.brand-text strong{display:block;font-size:15px;line-height:1.25;font-weight:800}
.brand-text em{display:block;font-style:normal;font-size:12px;line-height:1.5;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;min-width:0}
.nav-link{padding:8px 12px;border-radius:999px;font-size:15px;color:var(--muted);transition:color .2s,background .2s;white-space:nowrap}
.nav-link:hover,.nav-link:focus-visible{color:var(--ink);background:var(--soft);outline:none}
.nav-link.active{color:var(--track);background:var(--soft);font-weight:600}
.nav-cta{margin-left:10px;white-space:nowrap}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:var(--card);cursor:pointer;padding:0;place-items:center;margin-left:auto}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);margin:3px auto;border-radius:2px;transition:transform .2s,opacity .2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.drawer{display:none;border-top:1px solid var(--line);background:var(--card);padding:14px 24px 22px}
.drawer.open{display:block}
.drawer a{display:block;padding:12px 4px;font-size:16px;color:var(--ink);border-bottom:1px solid rgba(222,214,200,.6);min-height:44px}
.drawer a:last-of-type{border-bottom:0}
.drawer .btn{width:100%;margin-top:14px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;min-height:44px;transition:transform .2s,background .2s,color .2s,border-color .2s,box-shadow .2s}
.btn:focus-visible{outline:3px solid var(--soft);outline-offset:2px}
.btn-primary{background:var(--track);color:#fff}
.btn-primary:hover{background:var(--track-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-sunset{background:var(--sunset);color:var(--ink);font-weight:700}
.btn-sunset:hover{background:#ff6a29;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,69,.32)}
.btn-sunset:active{transform:translateY(1px)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-outline-light{border-color:rgba(255,255,255,.7);color:#fff;background:rgba(255,255,255,.06)}
.btn-outline-light:hover{background:rgba(255,255,255,.18);transform:translateY(-1px)}
.btn-lg{padding:14px 28px;font-size:16px}
.btn-sm{padding:8px 16px;font-size:14px;min-height:38px}
.btn-block{width:100%}

/* ---------- tags ---------- */
.tag{display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;background:var(--soft);color:var(--track);font-size:12.5px;font-weight:600;line-height:1.6}
.tag-warn{background:#FBEAE5;color:var(--warn)}
.tag-line{background:transparent;border:1px solid var(--line);color:var(--muted)}

/* ---------- sections ---------- */
.section{padding:88px 0}
.bg-card{background:var(--card)}
.bg-soft{background:var(--soft)}
.bg-ink{background:var(--ink);color:#fff}
.section-head{max-width:820px;margin-bottom:44px}
.section-kicker{display:inline-block;font-size:13px;font-weight:700;color:var(--track);background:var(--soft);padding:5px 13px;border-radius:999px;margin-bottom:14px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.36;font-weight:800;margin-bottom:14px}
.section-sub{color:var(--muted);font-size:16px;line-height:1.9}
.bg-ink .section-kicker{background:rgba(220,237,230,.16);color:#9fe3d2}
.bg-ink .section-sub{color:rgba(255,255,255,.76)}
.bg-soft .section-kicker{background:rgba(255,255,255,.75)}

/* ---------- category hero ---------- */
.cat-hero{background:var(--card);border-bottom:1px solid var(--line);padding:40px 0 62px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:24px}
.crumbs a{transition:color .2s}
.crumbs a:hover{color:var(--track)}
.crumbs .sep{color:var(--line)}
.cat-hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center}
.cat-hero h1{font-size:clamp(28px,3.8vw,44px);line-height:1.3;font-weight:800;margin-bottom:18px;overflow-wrap:break-word}
.cat-lead{color:var(--muted);font-size:16.5px;line-height:1.9;margin-bottom:12px}
.cat-hero-media{position:relative}
.cat-hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow-hover)}
.media-note{position:absolute;left:16px;bottom:16px;background:rgba(255,253,248,.94);border:1px solid var(--line);border-radius:12px;padding:8px 14px;font-size:13px;font-weight:600;color:var(--ink)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}

/* ---------- channel entry ---------- */
.channel-card{display:grid;grid-template-columns:1fr auto;gap:26px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.channel-card:hover{transform:translateY(-3px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.channel-card h3{font-size:22px;font-weight:800;margin-bottom:8px}
.channel-card p{color:var(--muted);font-size:15.5px;max-width:720px}
.channel-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ---------- path steps ---------- */
.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step-card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px 26px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.step-card:hover{transform:translateY(-4px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:var(--soft);color:var(--track);font-weight:800;font-size:16px;margin-bottom:16px}
.step-card h3{font-size:20px;font-weight:800;line-height:1.45;margin-bottom:10px}
.step-card p{color:var(--muted);font-size:15px;line-height:1.85}
.step-list{list-style:none;padding:0;margin:14px 0 0}
.step-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--muted);line-height:1.8}
.step-list li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--track);opacity:.7}

/* ---------- guide cards ---------- */
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.guide-card{display:flex;flex-direction:column;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s;min-width:0}
.guide-card:hover{transform:translateY(-3px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.guide-card h3{font-size:18.5px;font-weight:800;line-height:1.5;overflow-wrap:break-word}
.guide-card p{color:var(--muted);font-size:15px;line-height:1.85}
.guide-foot{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:8px}
.list-more{display:flex;justify-content:center;margin-top:38px}

/* ---------- params ---------- */
.param-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.param-card{display:flex;gap:16px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.param-card:hover{transform:translateY(-3px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.param-icon{flex:0 0 42px;width:42px;height:42px;border-radius:12px;background:var(--soft);color:var(--track);display:grid;place-items:center;font-weight:800;font-size:14px}
.param-card h3{font-size:17px;font-weight:800;margin-bottom:6px}
.param-card p{color:var(--muted);font-size:14.5px;line-height:1.8}

/* ---------- safety ---------- */
.safety-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:start}
.safety-list{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.safety-list li{display:flex;gap:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:16px 18px;transition:background .2s,border-color .2s}
.safety-list li:hover{background:rgba(255,255,255,.11);border-color:rgba(255,255,255,.3)}
.safety-dot{flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:rgba(255,122,69,.22);color:#FFB694;display:grid;place-items:center;font-size:12px;font-weight:800;margin-top:2px}
.safety-list strong{display:block;font-size:16px;margin-bottom:4px;color:#fff}
.safety-list span{display:block;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.76)}
.safety-photo img{width:100%;border-radius:var(--radius);object-fit:cover;aspect-ratio:5/4;border:1px solid rgba(255,255,255,.16)}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:0 22px;box-shadow:var(--shadow);transition:border-color .2s,box-shadow .2s}
.faq-item[open]{border-color:var(--track);box-shadow:var(--shadow-hover)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;font-size:16.5px;font-weight:700;min-height:44px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:focus-visible{outline:3px solid var(--soft);outline-offset:4px;border-radius:8px}
.faq-item summary::after{content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--soft);color:var(--track);display:grid;place-items:center;font-size:17px;font-weight:700;transition:transform .2s}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
.faq-answer{padding:0 0 20px;color:var(--muted);font-size:15.5px;line-height:1.9}

/* ---------- download ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.dl-card{display:flex;flex-direction:column;gap:12px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);padding:26px 24px;transition:transform .2s,background .2s,border-color .2s;min-width:0}
.dl-card:hover{transform:translateY(-3px);background:rgba(255,255,255,.11);border-color:rgba(255,255,255,.34)}
.dl-card h3{font-size:19px;font-weight:800;color:#fff}
.dl-card p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.76)}
.dl-card .btn{margin-top:auto}
.dl-note{margin-top:22px;font-size:14px;color:rgba(255,255,255,.66);line-height:1.85}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.related-card{display:flex;flex-direction:column;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.related-card:hover{transform:translateY(-3px);border-color:var(--track);box-shadow:var(--shadow-hover)}
.related-card h3{font-size:17.5px;font-weight:800;line-height:1.5}
.related-card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.related-link{font-size:14px;font-weight:700;color:var(--track);margin-top:auto}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr .8fr 1fr 1.1fr;gap:34px}
.footer-brand .brand{margin-bottom:16px}
.footer-about{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.62);max-width:380px}
.footer-col h4{font-size:15px;color:#fff;font-weight:800;margin-bottom:14px}
.footer-col a{display:block;font-size:14.5px;color:rgba(255,255,255,.72);padding:7px 0;min-height:38px;transition:color .2s}
.footer-col a:hover{color:var(--sunset)}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin-bottom:8px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);font-size:13.5px;color:rgba(255,255,255,.5)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 20px}
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:grid}
  .section{padding:72px 0}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px}
  .path-grid,.guide-grid,.param-grid,.dl-grid,.related-grid{grid-template-columns:repeat(2,1fr)}
  .safety-wrap{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .channel-card{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:16px;line-height:1.85}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .cat-hero{padding:28px 0 44px}
  .path-grid,.guide-grid,.param-grid,.dl-grid,.related-grid{grid-template-columns:1fr}
  .hero-actions,.tag-row{gap:8px}
  .btn{width:100%}
  .nav-wrap{gap:12px}
  .brand-text strong{font-size:14px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .section-head{margin-bottom:30px}
}