/* roulang page: index */
:root{
  --brand:#12c980;
  --brand-2:#0a9f68;
  --brand-soft:#e7f9f1;
  --ink:#0c1a15;
  --ink-2:#1b3129;
  --muted:#5f776d;
  --line:#e1ebe6;
  --bg:#f6faf8;
  --card:#ffffff;
  --dark:#07130f;
  --accent:#f5b93f;
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(12,26,21,.06);
  --shadow:0 14px 34px rgba(12,26,21,.08);
  --shadow-lg:0 28px 64px rgba(12,26,21,.14);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid rgba(18,201,128,.45);outline-offset:3px;border-radius:8px}
.container{width:min(var(--container),100% - 48px);margin-inline:auto}
.section{padding:88px 0}
.section--white{background:var(--card)}
.section--ink{background:var(--dark);color:#eaf6f1}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-inline:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-2);
  font-size:13px;font-weight:600;letter-spacing:.04em;
  margin-bottom:18px;
}
.section--ink .eyebrow{background:rgba(18,201,128,.16);color:#7ff0c2}
h2.section-title{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.35;letter-spacing:-.01em;font-weight:700}
.section-desc{margin-top:14px;color:var(--muted);font-size:16.5px}
.section--ink .section-desc{color:#a9c6bb}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.01em}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:none;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:800;
  box-shadow:0 8px 18px rgba(18,201,128,.28);
}
.brand-text{font-size:17px;white-space:nowrap}
.nav{display:flex;align-items:center;gap:6px;margin-left:22px}
.nav-link{
  padding:9px 16px;border-radius:999px;font-size:15px;color:var(--ink-2);
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand-2)}
.nav-link.is-active{background:var(--ink);color:#fff}
.header-cta{margin-left:auto}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 12px 26px rgba(18,201,128,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(18,201,128,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.32)}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-2);transform:translateY(-2px)}
.btn-lg{padding:16px 32px;font-size:16px}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--dark);color:#fff;padding-top:96px}
.hero-media{position:absolute;inset:0}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.4}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,19,15,.95) 8%,rgba(7,19,15,.72) 46%,rgba(7,19,15,.34) 100%);
}
.hero-inner{position:relative;z-index:2;padding-bottom:72px;max-width:820px}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;
  background:rgba(18,201,128,.16);border:1px solid rgba(18,201,128,.4);
  color:#8ef2c8;font-size:13.5px;font-weight:600;margin-bottom:24px;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:#2ee68f;display:block}
.hero h1{
  font-size:clamp(1.9rem,4.2vw,3.3rem);
  line-height:1.24;letter-spacing:-.02em;font-weight:800;
}
.hero h1 em{font-style:normal;color:#4be6a5}
.hero p.hero-sub{
  margin-top:22px;font-size:clamp(15.5px,1.5vw,17.5px);
  color:#c2d8d0;max-width:660px;line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;position:relative;z-index:2}
.hero-tags span{
  padding:8px 16px;border-radius:999px;font-size:13.5px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#d7e8e1;
}

/* stats strip */
.stats{background:var(--card);border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:34px 26px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:0}
.stat-num{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;color:var(--brand-2);letter-spacing:-.02em}
.stat-label{margin-top:6px;font-size:14px;color:var(--muted)}

/* features */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 26px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe9dd}
.card-icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-2);margin-bottom:18px;
}
.card-icon svg{width:24px;height:24px}
.card h3{font-size:17.5px;font-weight:700;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}

/* split */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.split--rev .split-media{order:2}
.split-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);width:100%;object-fit:cover;aspect-ratio:4/3}
.split-body h2{font-size:clamp(1.45rem,2.4vw,2rem);line-height:1.35;font-weight:700;letter-spacing:-.01em}
.split-body p{margin-top:16px;color:var(--muted)}
.checklist{margin-top:24px;display:grid;gap:12px}
.checklist li{display:flex;gap:11px;align-items:flex-start;font-size:15.5px;color:var(--ink-2)}
.checklist li::before{
  content:"";flex:none;width:20px;height:20px;border-radius:50%;margin-top:4px;
  background:var(--brand-soft) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230a9f68' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><path d='M20 6L9 17l-5-5'/></svg>") center/12px 12px no-repeat;
}

/* channel / category */
.channel{
  display:grid;grid-template-columns:1fr;gap:26px;
}
.channel-card{
  display:grid;grid-template-columns:auto 1fr auto;gap:24px;align-items:center;
  background:linear-gradient(120deg,#0d221b,#07130f);
  color:#eaf6f1;border-radius:var(--radius-lg);padding:34px 34px;
  border:1px solid rgba(18,201,128,.24);
  transition:transform .25s ease,box-shadow .25s ease;
}
.channel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.channel-mark{
  width:60px;height:60px;border-radius:18px;display:grid;place-items:center;
  background:rgba(18,201,128,.16);color:#5df0b0;font-size:20px;font-weight:800;
}
.channel-card h3{font-size:19px;font-weight:700;margin-bottom:8px}
.channel-card p{color:#a9c6bb;font-size:15px}
.channel-link{color:#5df0b0;font-weight:600;font-size:15px;white-space:nowrap}
.channel-link:hover{color:#9dfbd0}

/* safety */
.pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:8px}
.pillar{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);padding:26px 22px;
  transition:background .25s ease,border-color .25s ease;
}
.pillar:hover{background:rgba(18,201,128,.1);border-color:rgba(18,201,128,.4)}
.pillar-num{font-size:13px;font-weight:700;color:#5df0b0;letter-spacing:.12em}
.pillar h3{font-size:16.5px;margin:12px 0 8px;font-weight:700;color:#fff}
.pillar p{font-size:14.5px;color:#a9c6bb}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step}
.step{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  display:inline-block;font-size:13px;font-weight:800;letter-spacing:.1em;
  color:var(--brand-2);background:var(--brand-soft);
  padding:4px 11px;border-radius:999px;margin-bottom:16px;
}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:9px}
.step p{font-size:14.5px;color:var(--muted)}

/* tags row */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  padding:8px 15px;border-radius:999px;background:var(--card);
  border:1px solid var(--line);font-size:14px;color:var(--ink-2);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.tag:hover{border-color:var(--brand);color:var(--brand-2);background:var(--brand-soft)}

/* feed */
.feed-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:38px}
.feed-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.post-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe9dd}
.post-card h3{font-size:16.5px;font-weight:700;line-height:1.55;margin-bottom:10px}
.post-card p{font-size:14.5px;color:var(--muted);flex:1}
.post-meta{display:flex;align-items:center;gap:12px;margin-top:18px;font-size:13px;color:#87a096}
.post-meta span{
  padding:4px 11px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand-2);font-weight:600;
}
.post-empty{
  grid-column:1/-1;text-align:center;padding:48px 24px;
  border:1px dashed var(--line);border-radius:var(--radius);
  color:var(--muted);background:#fbfdfc;
}

/* voices */
.voices{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.voice{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 26px;box-shadow:var(--shadow-sm);
}
.voice-stars{color:var(--accent);font-size:14px;letter-spacing:2px;margin-bottom:14px}
.voice p{font-size:15px;color:var(--ink-2);line-height:1.85}
.voice-user{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.voice-avatar{
  width:42px;height:42px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-2);font-weight:700;
}
.voice-name{font-size:14.5px;font-weight:700}
.voice-role{font-size:13px;color:var(--muted)}

/* faq */
.faq-list{display:grid;gap:14px;max-width:900px;margin-inline:auto}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:6px 24px;box-shadow:var(--shadow-sm);transition:border-color .2s ease;
}
.faq-item[open]{border-color:#bfe7d6;box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 34px 20px 0;position:relative;
  font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:2px;top:26px;width:11px;height:11px;
  border-right:2px solid var(--brand-2);border-bottom:2px solid var(--brand-2);
  transform:rotate(45deg);transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-item p{padding-bottom:22px;color:var(--muted);font-size:15px}

/* cta */
.cta-band{
  position:relative;overflow:hidden;background:linear-gradient(125deg,#0a231b,#07130f 62%);
  color:#fff;border-radius:var(--radius-lg);padding:64px 56px;
  display:grid;grid-template-columns:1.25fr auto;gap:40px;align-items:center;
  box-shadow:var(--shadow-lg);
}
.cta-band::before{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,201,128,.34),transparent 68%);
}
.cta-band h2{font-size:clamp(1.4rem,2.4vw,1.95rem);line-height:1.35;font-weight:700}
.cta-band p{margin-top:14px;color:#a9c6bb;font-size:15.5px;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:2}

/* footer */
.site-footer{background:#06110d;color:#9fbab0;padding:70px 0 30px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-desc{font-size:14.5px;line-height:1.85;color:#8ea79d;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14.5px;color:#9fbab0;transition:color .2s ease}
.footer-col a:hover{color:#5df0b0}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:26px;font-size:13.5px;color:#7c948b}
.footer-bottom a:hover{color:#5df0b0}

/* responsive */
@media (max-width:1024px){
  .section{padding:70px 0}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .feed-grid{grid-template-columns:repeat(2,1fr)}
  .voices{grid-template-columns:repeat(2,1fr)}
  .pillars{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:34px}
  .split--rev .split-media{order:0}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat{border-left:0;padding:26px 0;border-top:1px solid var(--line)}
  .stat:nth-child(2n){padding-left:24px;border-left:1px solid var(--line)}
  .stat:nth-child(-n+2){border-top:0}
  .cta-band{grid-template-columns:1fr;padding:48px 36px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav{display:none}
  .nav.open{
    display:flex;flex-direction:column;align-items:stretch;gap:6px;margin-left:0;
    position:absolute;left:24px;right:24px;top:74px;background:#fff;
    border:1px solid var(--line);border-radius:var(--radius);padding:14px;
    box-shadow:var(--shadow-lg);
  }
  .nav-toggle{display:flex}
  .header-cta{display:none}
}
@media (max-width:768px){
  .container{width:min(var(--container),100% - 36px)}
  .hero{padding-top:66px}
  .hero-inner{padding-bottom:52px}
  .grid-3,.feed-grid,.voices,.pillars,.steps{grid-template-columns:1fr}
  .channel-card{grid-template-columns:1fr;gap:16px;padding:28px 24px}
  .channel-link{justify-self:start}
  .section-head{margin-bottom:32px}
  .cta-band{padding:38px 26px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .brand-text{font-size:15.5px}
}
@media (max-width:520px){
  .container{width:min(var(--container),100% - 28px)}
  .stats-grid{grid-template-columns:1fr}
  .stat{padding:22px 0 !important;border-left:0 !important;border-top:1px solid var(--line)}
  .stat:first-child{border-top:0}
  .hero-actions .btn{width:100%}
  .hero-tags span{font-size:12.5px;padding:7px 13px}
  .btn{padding:12px 22px}
  .card,.post-card,.voice{padding:24px 20px}
}

/* roulang page: article */
:root{
  --brand:#12c980;
  --brand-2:#0a9f68;
  --brand-soft:#e7f9f1;
  --ink:#0c1a15;
  --ink-2:#1b3129;
  --muted:#5f776d;
  --line:#e1ebe6;
  --bg:#f6faf8;
  --card:#ffffff;
  --dark:#07130f;
  --accent:#f5b93f;
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(12,26,21,.06);
  --shadow:0 14px 34px rgba(12,26,21,.08);
  --shadow-lg:0 28px 64px rgba(12,26,21,.14);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0}
ul{list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
strong{font-weight:700}
.container{width:min(var(--container),100% - 48px);margin-inline:auto}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--white{background:var(--card)}
.section--ink{background:var(--dark);color:#eaf6f1}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-inline:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-2);
  font-size:13px;font-weight:600;letter-spacing:.04em;
  margin-bottom:18px;
}
.section--ink .eyebrow{background:rgba(18,201,128,.16);color:#7ff0c2}
h2.section-title{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.35;letter-spacing:-.01em;font-weight:700}
.section-desc{margin-top:14px;color:var(--muted);font-size:16.5px}
.section--ink .section-desc{color:#a9c6bb}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.01em}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:none;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:800;
  box-shadow:0 8px 18px rgba(18,201,128,.28);
}
.brand-text{font-size:17px;white-space:nowrap}
.nav{display:flex;align-items:center;gap:6px;margin-left:22px}
.nav-link{
  padding:9px 16px;border-radius:999px;font-size:15px;color:var(--ink-2);
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand-2)}
.nav-link.is-active{background:var(--ink);color:#fff}
.nav-link:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:3px solid rgba(18,201,128,.55);outline-offset:2px;border-radius:8px;
}
.header-cta{margin-left:auto}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 12px 26px rgba(18,201,128,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(18,201,128,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.32)}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-2);transform:translateY(-2px)}
.btn-lg{padding:16px 32px;font-size:16px}

/* article hero */
.article-hero{
  position:relative;
  padding:44px 0 0;
  background:linear-gradient(180deg,#eef8f3 0%,#f6faf8 78%);
  border-bottom:1px solid var(--line);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand-2)}
.crumbs span.sep{opacity:.5}
.crumbs span.now{color:var(--ink-2);font-weight:600}
.article-head{max-width:840px;margin-top:22px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--brand-2);font-size:13px;font-weight:600;box-shadow:var(--shadow-sm);
}
.article-head h1{
  margin-top:20px;
  font-size:clamp(1.7rem,3.4vw,2.6rem);
  line-height:1.32;letter-spacing:-.02em;font-weight:800;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:20px;color:var(--muted);font-size:14px;
}
.article-meta .dot{width:5px;height:5px;border-radius:50%;background:#bcd3c9}
.article-cover{
  margin-top:34px;
  border-radius:var(--radius-lg) var(--radius-lg) 0 0;
  overflow:hidden;
  box-shadow:var(--shadow);
  border:1px solid var(--line);
  border-bottom:0;
}
.article-cover img{width:100%;aspect-ratio:16/7;object-fit:cover}

/* article body */
.article-wrap{padding:56px 0 24px}
.article-main{max-width:840px;margin-inline:auto}
.prose{color:var(--ink-2);font-size:16.5px;line-height:1.95}
.prose > * + *{margin-top:20px}
.prose h2{
  position:relative;margin-top:46px;padding-left:18px;
  font-size:clamp(1.25rem,2.1vw,1.6rem);font-weight:700;color:var(--ink);line-height:1.45;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:5px;border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.prose h3{margin-top:34px;font-size:1.12rem;font-weight:700;color:var(--ink)}
.prose p{color:#31463d}
.prose a{color:var(--brand-2);border-bottom:1px solid rgba(10,159,104,.35)}
.prose a:hover{color:#087a51;border-bottom-color:#087a51}
.prose ul,.prose ol{padding-left:0;display:grid;gap:12px}
.prose ul li{position:relative;padding-left:26px;color:#31463d}
.prose ul li::before{
  content:"";position:absolute;left:6px;top:.72em;width:8px;height:8px;border-radius:3px;
  background:var(--brand);transform:rotate(45deg);
}
.prose ol{counter-reset:item}
.prose ol li{position:relative;padding-left:34px;counter-increment:item;color:#31463d}
.prose ol li::before{
  content:counter(item);position:absolute;left:0;top:.28em;
  width:22px;height:22px;border-radius:8px;background:var(--brand-soft);color:var(--brand-2);
  font-size:12.5px;font-weight:700;display:grid;place-items:center;line-height:1;
}
.prose blockquote{
  margin-top:30px;padding:22px 26px;border-radius:var(--radius);
  background:var(--brand-soft);border-left:4px solid var(--brand);
  color:#14523a;font-size:16px;
}
.prose img{border-radius:var(--radius);box-shadow:var(--shadow-sm);margin-top:26px;width:100%}
.prose table{width:100%;border-collapse:collapse;font-size:15px;margin-top:24px}
.prose th,.prose td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.prose th{background:var(--brand-soft);color:#14523a;font-weight:700}
.prose hr{border:0;border-top:1px solid var(--line);margin:40px 0}

/* empty state */
.empty-state{
  background:var(--card);border:1px dashed #cfe3d9;border-radius:var(--radius-lg);
  padding:56px 32px;text-align:center;box-shadow:var(--shadow-sm);
}
.empty-state h2{font-size:1.3rem;font-weight:700}
.empty-state p{margin-top:12px;color:var(--muted)}
.empty-state .btn{margin-top:26px}

/* key points */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 26px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe9dd}
.card-icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-2);margin-bottom:18px;
}
.card-icon svg{width:24px;height:24px}
.card h3{font-size:17.5px;font-weight:700;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}

/* related posts */
.post-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);height:100%;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe9dd}
.post-card .thumb{aspect-ratio:16/10;overflow:hidden}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.post-card:hover .thumb img{transform:scale(1.05)}
.post-card .body{padding:22px 22px 26px}
.post-card .tag{
  display:inline-block;padding:4px 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-2);font-size:12.5px;font-weight:600;
}
.post-card h3{margin-top:12px;font-size:17px;font-weight:700;line-height:1.5}
.post-card p{margin-top:10px;color:var(--muted);font-size:14.5px}

/* faq */
.faq-list{display:grid;gap:14px;max-width:860px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:6px 22px;box-shadow:var(--shadow-sm);transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#c9e7da;box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-weight:700;color:var(--ink);font-size:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;width:26px;height:26px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand-2);
  display:grid;place-items:center;font-size:17px;font-weight:700;line-height:1;
  transition:transform .2s ease,background .2s ease;
}
.faq-item[open] summary::after{content:"−";background:var(--brand);color:#fff}
.faq-item p{padding:0 0 18px;color:var(--muted);font-size:15.5px}

/* cta band */
.cta-band{position:relative;overflow:hidden;background:var(--dark);color:#fff;border-radius:0}
.cta-band .bg{position:absolute;inset:0}
.cta-band .bg img{width:100%;height:100%;object-fit:cover;opacity:.28}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,19,15,.95) 12%,rgba(7,19,15,.7) 52%,rgba(7,19,15,.4) 100%);
}
.cta-inner{position:relative;z-index:2;max-width:720px;padding:72px 0}
.cta-inner h2{font-size:clamp(1.4rem,2.6vw,2rem);font-weight:800;line-height:1.35}
.cta-inner p{margin-top:16px;color:#bcd4ca;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.cta-notes{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.cta-notes span{
  padding:7px 15px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#d7e8e1;
}

/* footer */
.site-footer{background:#07130f;color:#a9c6bb;padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:17px}
.footer-desc{margin-top:16px;font-size:14.5px;line-height:1.85;max-width:360px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px;font-size:14.5px}
.footer-col a{color:#a9c6bb;transition:color .2s ease}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13.5px;color:#7f9c92;
}

@media (max-width:1024px){
  .section{padding:70px 0}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .nav{margin-left:10px}
}
@media (max-width:860px){
  .nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:4px;
    margin-left:0;padding:12px 24px 18px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow);display:none;
  }
  .nav.is-open{display:flex}
  .nav-link{padding:12px 14px;border-radius:12px}
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .article-cover{border-radius:var(--radius);border-bottom:1px solid var(--line)}
  .article-cover img{aspect-ratio:16/9}
}
@media (max-width:768px){
  .container{width:min(var(--container),100% - 32px)}
  .section{padding:56px 0}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .article-hero{padding-top:30px}
  .article-wrap{padding:40px 0 12px}
  .prose{font-size:16px;line-height:1.9}
  .cta-inner{padding:56px 0}
  .faq-item{padding:4px 18px}
  .footer-grid{grid-template-columns:1fr}
  .footer-desc{max-width:none}
}
@media (max-width:520px){
  .brand-text{font-size:15px}
  .article-head h1{font-size:1.5rem}
  .article-meta{font-size:13px;gap:8px 12px}
  .btn{padding:12px 20px;font-size:14.5px}
  .btn-lg{padding:14px 24px;font-size:15px}
  .cta-actions .btn{width:100%}
  .card{padding:24px 20px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
  --brand:#12c980;
  --brand-2:#0a9f68;
  --brand-soft:#e7f9f1;
  --ink:#0c1a15;
  --ink-2:#1b3129;
  --muted:#5f776d;
  --line:#e1ebe6;
  --bg:#f6faf8;
  --card:#ffffff;
  --dark:#07130f;
  --accent:#f5b93f;
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(12,26,21,.06);
  --shadow:0 14px 34px rgba(12,26,21,.08);
  --shadow-lg:0 28px 64px rgba(12,26,21,.14);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
:focus-visible{outline:3px solid rgba(18,201,128,.55);outline-offset:3px;border-radius:6px}
.container{width:min(var(--container),100% - 48px);margin-inline:auto}
.section{padding:88px 0}
.section--white{background:var(--card)}
.section--soft{background:linear-gradient(180deg,#f6faf8 0%,#eef7f2 100%)}
.section--ink{background:var(--dark);color:#eaf6f1}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-inline:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-2);
  font-size:13px;font-weight:600;letter-spacing:.04em;
  margin-bottom:18px;
}
.section--ink .eyebrow{background:rgba(18,201,128,.16);color:#7ff0c2}
.section-title{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.35;letter-spacing:-.01em;font-weight:700}
.section-desc{margin-top:14px;color:var(--muted);font-size:16.5px}
.section--ink .section-desc{color:#a9c6bb}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.01em}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:none;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:800;
  box-shadow:0 8px 18px rgba(18,201,128,.28);
}
.brand-text{font-size:17px;white-space:nowrap}
.nav{display:flex;align-items:center;gap:6px;margin-left:22px}
.nav-link{
  padding:9px 16px;border-radius:999px;font-size:15px;color:var(--ink-2);
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand-2)}
.nav-link.is-active{background:var(--ink);color:#fff}
.header-cta{margin-left:auto}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 12px 26px rgba(18,201,128,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(18,201,128,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.32)}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-2);transform:translateY(-2px)}
.btn-lg{padding:16px 32px;font-size:16px}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--dark);color:#fff;padding-top:64px}
.hero-media{position:absolute;inset:0}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.42}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,19,15,.95) 8%,rgba(7,19,15,.74) 48%,rgba(7,19,15,.36) 100%);
}
.hero-inner{position:relative;z-index:2;padding-bottom:76px;max-width:840px}
.crumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:#9dbcb1;margin-bottom:22px;position:relative;z-index:2;padding-top:26px}
.crumb a:hover{color:#7ff0c2}
.crumb span{color:#6d8d82}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;
  background:rgba(18,201,128,.16);border:1px solid rgba(18,201,128,.4);
  color:#8ef2c8;font-size:13.5px;font-weight:600;margin-bottom:24px;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:#2ee68f;display:block}
.hero h1{font-size:clamp(1.85rem,4vw,3.1rem);line-height:1.26;letter-spacing:-.02em;font-weight:800}
.hero h1 em{font-style:normal;color:#4be6a5}
.hero-sub{margin-top:22px;font-size:clamp(15.5px,1.5vw,17.5px);color:#c2d8d0;max-width:680px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px}
.hero-tags span{
  padding:8px 16px;border-radius:999px;font-size:13.5px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#d7e8e1;
}

/* grids & cards */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 26px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe9dd}
.card-icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-2);margin-bottom:18px;
}
.card-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:17.5px;font-weight:700;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-2);font-size:12.5px;font-weight:600;
}

/* pace stats */
.stat-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px 30px;box-shadow:var(--shadow-sm);
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:8px}
.stat-item{padding:18px 16px;border-radius:var(--radius);background:var(--bg);border:1px solid var(--line)}
.stat-num{font-size:clamp(1.5rem,2.4vw,2rem);font-weight:800;color:var(--brand-2);letter-spacing:-.02em;line-height:1.2}
.stat-label{font-size:13.5px;color:var(--muted);margin-top:6px}
.pace-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.pace-chip{
  display:flex;flex-direction:column;gap:2px;padding:14px 20px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--line);min-width:132px;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.pace-chip:hover{border-color:var(--brand);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.pace-chip b{font-size:17px;color:var(--ink)}
.pace-chip small{color:var(--muted);font-size:12.5px}

/* scenes */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;
}
.scene:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.scene-media{aspect-ratio:16/10;overflow:hidden}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.scene:hover .scene-media img{transform:scale(1.05)}
.scene-body{padding:24px 24px 28px}
.scene-body h3{font-size:17.5px;font-weight:700;margin-bottom:10px}
.scene-body p{color:var(--muted);font-size:15px}
.scene-body .tag{margin-bottom:12px}

/* split */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);width:100%;object-fit:cover;aspect-ratio:4/3}
.split-body h2{font-size:clamp(1.45rem,2.4vw,2rem);line-height:1.35;font-weight:700;letter-spacing:-.01em}
.split-body p{margin-top:16px;color:var(--muted)}
.check-list{margin-top:24px;display:grid;gap:14px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--ink-2)}
.check-list li::before{
  content:"";flex:none;width:20px;height:20px;border-radius:50%;margin-top:4px;
  background:var(--brand-soft) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230a9f68' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>") center/12px no-repeat;
}

/* steps */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:28px 24px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.step-num{
  width:40px;height:40px;border-radius:13px;display:grid;place-items:center;
  background:var(--ink);color:#fff;font-weight:800;font-size:15px;margin-bottom:16px;
}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:9px}
.step p{color:var(--muted);font-size:14.5px}

/* safety dark block */
.safety-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:8px}
.safety-item{
  padding:26px 24px;border-radius:var(--radius-lg);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  transition:background .25s ease,border-color .25s ease,transform .25s ease;
}
.safety-item:hover{background:rgba(18,201,128,.12);border-color:rgba(18,201,128,.4);transform:translateY(-4px)}
.safety-item h3{font-size:16.5px;font-weight:700;margin-bottom:10px;color:#eaf6f1}
.safety-item p{color:#a9c6bb;font-size:14.5px}

/* channel */
.channel-panel{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  padding:36px 38px;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,#e7f9f1,#ffffff 70%);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.channel-panel h3{font-size:20px;font-weight:700;margin-bottom:8px}
.channel-panel p{color:var(--muted);font-size:15px;max-width:620px}

/* posts */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe9dd}
.post-card h3{font-size:16.5px;font-weight:700;line-height:1.5}
.post-card p{color:var(--muted);font-size:14.5px;flex:1}
.post-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:12.5px;color:var(--muted)}
.post-meta span:first-child{
  padding:4px 11px;border-radius:999px;background:var(--brand-soft);color:var(--brand-2);font-weight:600;
}
.empty-tip{
  padding:34px;border-radius:var(--radius-lg);background:var(--card);
  border:1px dashed var(--line);color:var(--muted);text-align:center;
}
.list-more{display:flex;justify-content:center;margin-top:38px}

/* faq */
.faq-list{display:grid;gap:14px;max-width:900px;margin-inline:auto}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:0 24px;box-shadow:var(--shadow-sm);transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#cfe9dd;box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 0;font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-2);
  font-size:18px;font-weight:700;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"–";transform:rotate(180deg)}
.faq-item .faq-answer{padding:0 0 24px;color:var(--muted);font-size:15px}

/* join */
.join-panel{
  border-radius:var(--radius-lg);padding:48px 44px;
  background:linear-gradient(135deg,#0a9f68,#07130f 92%);
  color:#fff;box-shadow:var(--shadow-lg);
}
.join-panel h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;line-height:1.35;letter-spacing:-.01em}
.join-panel p{margin-top:14px;color:#bfe2d3;max-width:640px}
.join-form{display:grid;grid-template-columns:repeat(3,1fr) auto;gap:14px;margin-top:32px;align-items:end}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:13px;color:#a8d7c4;font-weight:600}
.field input,.field select{
  width:100%;padding:13px 15px;border-radius:12px;border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.1);color:#fff;font-size:14.5px;
  transition:border-color .2s ease,background .2s ease;
}
.field input::placeholder{color:#94b8ab}
.field input:focus,.field select:focus{
  outline:none;border-color:#4be6a5;background:rgba(255,255,255,.16);
}
.field select option{color:#0c1a15}
.join-form .btn{white-space:nowrap}

/* footer */
.site-footer{background:var(--dark);color:#c5dbd2;padding:72px 0 34px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:11px;font-weight:800;color:#fff;font-size:17px;margin-bottom:16px}
.footer-desc{font-size:14.5px;color:#9dbcb1;max-width:380px;line-height:1.85}
.footer-col h4{font-size:14.5px;color:#fff;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14.5px;color:#9dbcb1;transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:#4be6a5;padding-left:4px}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:#84a297;
}

/* responsive */
@media (max-width:1024px){
  .section{padding:70px 0}
  .grid-4,.stat-grid,.step-grid{grid-template-columns:repeat(2,1fr)}
  .grid-3,.scene-grid,.post-grid,.safety-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:38px}
  .split-media img{aspect-ratio:16/9}
  .join-form{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:768px){
  .container{width:calc(100% - 32px)}
  .nav{
    display:none;position:absolute;left:16px;right:16px;top:74px;
    flex-direction:column;align-items:stretch;gap:4px;margin:0;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    padding:12px;box-shadow:var(--shadow);
  }
  .nav.is-open{display:flex}
  .nav-link{padding:12px 16px}
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .hero{padding-top:36px}
  .hero-inner{padding-bottom:56px}
  .section{padding:58px 0}
  .grid-4,.grid-3,.grid-2,.stat-grid,.step-grid,.scene-grid,.post-grid,.safety-grid{grid-template-columns:1fr}
  .join-panel{padding:34px 24px}
  .join-form{grid-template-columns:1fr}
  .channel-panel{padding:28px 24px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .brand-text{font-size:15.5px}
  .hero h1{font-size:1.7rem}
  .hero-actions .btn{width:100%}
  .card,.scene-body,.step,.post-card{padding:22px 20px}
  .faq-item{padding:0 18px}
  .section-title{font-size:1.4rem}
}