/* roulang page: index */
:root{
  --brand-900:#0B2E24;
  --brand-700:#10483A;
  --brand-500:#1C6B54;
  --accent:#D8FF4A;
  --accent-strong:#B6E631;
  --warm:#FF6B35;
  --ink:#14181A;
  --ink-2:#4A5257;
  --ink-3:#8A9290;
  --line:#E3E7E1;
  --paper:#F6F7F4;
  --white:#FFFFFF;
  --dark:#0C1512;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,21,18,.05);
  --sh-2:0 14px 34px -18px rgba(12,21,18,.28);
  --sect:112px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-500);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}
.muted{color:var(--ink-3);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-stuck{box-shadow:0 1px 2px rgba(12,21,18,.06);}
.nav{
  display:flex;align-items:center;gap:28px;
  height:76px;
  transition:height .24s var(--ease);
}
.site-header.is-stuck .nav{height:64px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  background:var(--brand-900);
  display:grid;place-items:center;
  box-shadow:0 1px 2px rgba(12,21,18,.18);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:16px;font-weight:800;letter-spacing:-.01em;}
.brand-text span{font-size:11px;letter-spacing:.14em;color:var(--ink-3);font-weight:500;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;}
.nav-links a{
  position:relative;
  padding:8px 12px;
  font-size:15px;font-weight:600;color:var(--ink-2);
  border-radius:8px;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:12px;bottom:2px;height:2px;width:0;
  background:var(--accent);border-radius:2px;
  transition:width .18s var(--ease);
}
.nav-links a:hover{color:var(--brand-700);background:var(--paper);}
.nav-links a:hover::after{width:18px;}
.nav-links a.is-active{color:var(--brand-700);}
.nav-links a.is-active::after{width:18px;}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search{
  display:flex;align-items:center;gap:8px;
  background:var(--paper);
  border:1px solid transparent;
  border-radius:var(--r-pill);
  padding:9px 16px;
  width:220px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.search:focus-within{border-color:var(--brand-500);background:var(--white);}
.search svg{width:16px;height:16px;flex:0 0 auto;stroke:var(--ink-3);}
.search input{
  border:0;background:none;outline:none;
  width:100%;font-size:14px;color:var(--ink);
}
.search input::placeholder{color:var(--ink-3);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:650;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-700);color:var(--white);box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-900);color:var(--white);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent{background:var(--accent);color:var(--brand-900);}
.btn-accent:hover{background:var(--accent-strong);color:var(--brand-900);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--white);border:1.5px solid rgba(255,255,255,.65);}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:var(--white);border-color:var(--white);}
.btn-outline{background:transparent;color:var(--brand-700);border:1.5px solid var(--line);}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  min-height:88vh;
  display:flex;align-items:center;
  background-image:linear-gradient(100deg,rgba(11,46,36,.92) 0%,rgba(11,46,36,.72) 46%,rgba(11,46,36,.36) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  color:var(--white);
  overflow:hidden;
}
.hero-inner{position:relative;z-index:2;padding:96px 0 72px;width:100%;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(216,255,74,.14);
  border:1px solid rgba(216,255,74,.4);
  color:var(--accent);
  font-size:13px;font-weight:600;letter-spacing:.04em;
}
.hero h1{
  margin-top:22px;
  max-width:15em;
  font-size:clamp(2.3rem,4.8vw,3.7rem);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
}
.hero-sub{
  margin-top:20px;
  max-width:34em;
  font-size:17px;
  line-height:1.8;
  color:rgba(255,255,255,.86);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-stamp{
  position:absolute;left:32px;bottom:36px;z-index:3;
  width:64px;height:64px;border-radius:4px;
  border:1px solid rgba(216,255,74,.55);
  display:grid;place-items:center;
  color:var(--accent);font-size:14px;font-weight:700;letter-spacing:.08em;
  background:rgba(12,21,18,.28);
}
.hero-stats{
  position:absolute;right:32px;bottom:40px;z-index:3;
  display:flex;align-items:center;gap:22px;
  padding:16px 22px;
  border-radius:var(--r-card);
  background:rgba(12,21,18,.42);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(2px);
}
.hero-stats .st{display:flex;flex-direction:column;gap:2px;padding-left:22px;border-left:1px solid rgba(216,255,74,.45);}
.hero-stats .st:first-child{border-left:0;padding-left:0;}
.hero-stats b{font-size:22px;font-weight:750;color:var(--accent);font-family:ui-monospace,Menlo,Consolas,monospace;letter-spacing:-.01em;}
.hero-stats span{font-size:12px;color:rgba(255,255,255,.72);letter-spacing:.06em;}
.fade-up{opacity:0;transform:translateY(16px);animation:fadeUp .62s var(--ease) forwards;}
.d1{animation-delay:.05s;}
.d2{animation-delay:.13s;}
.d3{animation-delay:.21s;}
@keyframes fadeUp{to{opacity:1;transform:none;}}

/* ---------- sections ---------- */
main{display:block;}
.section{padding:var(--sect) 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.3;font-weight:750;letter-spacing:-.01em;}
.section-head p{margin-top:10px;max-width:44em;color:var(--ink-2);font-size:15px;line-height:1.8;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:650;color:var(--brand-700);white-space:nowrap;}
.link-more svg{width:15px;height:15px;transition:transform .2s var(--ease);}
.link-more:hover svg{transform:translateX(4px);}
.bg-paper{background:var(--paper);}

/* ---------- tag rail ---------- */
.tag-rail{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--white);}
.tag-rail .rail{
  display:flex;gap:10px;overflow-x:auto;padding:18px 0;
  scrollbar-width:none;
}
.tag-rail .rail::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  padding:9px 18px;border-radius:var(--r-pill);
  background:var(--paper);color:var(--ink-2);
  font-size:14px;font-weight:600;border:1px solid transparent;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.chip:hover{background:var(--brand-700);color:var(--white);}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.bcard{
  position:relative;display:flex;flex-direction:column;
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--white);overflow:hidden;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.bcard:hover{transform:translateY(-3px);border-color:var(--brand-500);box-shadow:var(--sh-2);}
.bcard .thumb{position:relative;overflow:hidden;background:var(--paper);}
.bcard .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s var(--ease);}
.bcard:hover .thumb img{transform:scale(1.03);}
.bcard .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.bcard h3{font-size:1.15rem;line-height:1.5;font-weight:650;}
.bcard p{font-size:14px;line-height:1.75;color:var(--ink-2);}
.bcard-lg{grid-column:span 6;grid-row:span 2;}
.bcard-lg .thumb{flex:1 1 auto;min-height:280px;}
.bcard-lg h3{font-size:1.55rem;line-height:1.35;font-weight:750;}
.bcard-lg .body{padding:28px;}
.bcard-md{grid-column:span 3;}
.bcard-md .thumb{aspect-ratio:3/2;}
.bcard-sm{grid-column:span 3;}
.bcard-sm .thumb{aspect-ratio:16/9;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(28,107,84,.1);color:var(--brand-700);
  font-size:12px;font-weight:650;letter-spacing:.04em;
}
.badge-hot{background:rgba(255,107,53,.12);color:#C34A19;}
.badge-accent{background:var(--accent);color:var(--brand-900);}
.bcard-meta{display:flex;align-items:center;gap:12px;margin-top:auto;font-size:12.5px;color:var(--ink-3);letter-spacing:.04em;}

/* ---------- featured ---------- */
.feat-wide{display:grid;grid-template-columns:46% 54%;gap:0;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--white);transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);}
.feat-wide:hover{transform:translateY(-3px);border-color:var(--brand-500);box-shadow:var(--sh-2);}
.feat-wide .thumb{overflow:hidden;background:var(--paper);min-height:230px;}
.feat-wide .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s var(--ease);}
.feat-wide:hover .thumb img{transform:scale(1.03);}
.feat-wide .body{padding:28px 30px;display:flex;flex-direction:column;gap:12px;}
.feat-wide h3{font-size:clamp(1.3rem,2vw,1.6rem);line-height:1.4;font-weight:750;}
.feat-wide p{font-size:15px;line-height:1.8;color:var(--ink-2);}
.feat-list{display:flex;flex-direction:column;gap:24px;}
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:24px;}
.mini-card{border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--white);display:flex;flex-direction:column;transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);}
.mini-card:hover{transform:translateY(-3px);border-color:var(--brand-500);box-shadow:var(--sh-2);}
.mini-card .thumb{aspect-ratio:3/2;overflow:hidden;background:var(--paper);}
.mini-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s var(--ease);}
.mini-card:hover .thumb img{transform:scale(1.03);}
.mini-card .body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto;}
.mini-card h3{font-size:15.5px;line-height:1.6;font-weight:650;}

/* ---------- cms list ---------- */
.cms-list{border-top:1px solid var(--line);}
.cms-row{
  display:grid;grid-template-columns:118px 1fr 40px;align-items:center;gap:20px;
  padding:24px 8px;
  border-bottom:1px solid var(--line);
  transition:padding-left .22s var(--ease),background .22s var(--ease);
}
.cms-row:hover{padding-left:14px;background:rgba(246,247,244,.75);}
.cms-row time{font-size:13px;color:var(--ink-3);letter-spacing:.02em;font-family:ui-monospace,Menlo,Consolas,monospace;}
.cms-row h3{font-size:17px;line-height:1.55;font-weight:650;transition:color .2s var(--ease);}
.cms-row:hover h3{color:var(--brand-700);}
.cms-row .exc{margin-top:6px;font-size:14px;color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.cms-row .tagline{display:inline-flex;margin-top:10px;}
.cms-arrow{
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line);color:var(--brand-700);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.cms-row:hover .cms-arrow{background:var(--brand-700);color:var(--white);border-color:var(--brand-700);}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:64px 24px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--paper);
}
.empty-state svg{width:34px;height:34px;stroke:var(--brand-500);}
.empty-state p{font-size:15px;color:var(--ink-2);}

/* ---------- rail cards ---------- */
.card-rail{display:flex;gap:20px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory;}
.card-rail::-webkit-scrollbar{height:6px;}
.card-rail::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px;}
.rail-card{
  flex:0 0 300px;scroll-snap-align:start;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--white);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.rail-card:hover{transform:translateY(-3px);border-color:var(--brand-500);box-shadow:var(--sh-2);}
.rail-card .thumb{aspect-ratio:3/2;overflow:hidden;background:var(--paper);}
.rail-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s var(--ease);}
.rail-card:hover .thumb img{transform:scale(1.03);}
.rail-card .body{padding:18px;display:flex;flex-direction:column;gap:8px;}
.rail-card h3{font-size:15.5px;font-weight:650;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ---------- proof ---------- */
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.proof{
  padding:26px 24px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--white);
  display:flex;flex-direction:column;gap:8px;
}
.proof b{font-size:30px;font-weight:750;color:var(--brand-700);font-family:ui-monospace,Menlo,Consolas,monospace;letter-spacing:-.02em;}
.proof span{font-size:13.5px;color:var(--ink-2);line-height:1.7;}
.proof-note{margin-top:28px;padding:22px 26px;border-radius:var(--r-card);background:var(--paper);border:1px solid var(--line);font-size:14.5px;color:var(--ink-2);line-height:1.85;}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;
  font-size:16.5px;font-weight:650;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--brand-700);}
.faq .plus{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line);color:var(--brand-700);font-size:16px;line-height:1;
  transition:transform .25s var(--ease),background .25s var(--ease),color .25s var(--ease);
}
.faq details[open] .plus{transform:rotate(45deg);background:var(--accent);color:var(--brand-900);border-color:var(--accent);}
.faq .answer{
  padding:0 4px 24px 18px;
  border-left:2px solid var(--accent);
  margin-left:2px;
  font-size:15px;line-height:1.85;color:var(--ink-2);
  max-width:64em;
}

/* ---------- dark cta ---------- */
.cta-band{background:var(--dark);color:var(--white);}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;padding:80px 0;}
.cta-inner h2{font-size:clamp(1.7rem,3vw,2.4rem);line-height:1.28;font-weight:750;letter-spacing:-.01em;}
.cta-inner p{margin-top:14px;max-width:36em;color:rgba(255,255,255,.74);font-size:15.5px;line-height:1.85;}
.cta-icons{display:flex;gap:14px;flex:0 0 auto;}
.icon-btn{
  width:52px;height:52px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.28);
  color:var(--white);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn svg{width:20px;height:20px;}
.icon-btn:hover{background:var(--accent);color:var(--brand-900);border-color:var(--accent);transform:translateY(-2px);}
.icon-btn.done{background:var(--accent);color:var(--brand-900);border-color:var(--accent);}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:72px 0 0;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.12);}
.site-footer .brand{color:var(--white);}
.site-footer .brand-text span{color:rgba(255,255,255,.55);}
.site-footer .brand-mark{background:var(--brand-700);}
.foot-about{margin-top:18px;font-size:14px;line-height:1.85;max-width:26em;color:rgba(255,255,255,.66);}
.socials{display:flex;gap:10px;margin-top:20px;}
.socials a{
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.8);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.socials a svg{width:17px;height:17px;}
.socials a:hover{background:var(--accent);color:var(--brand-900);border-color:var(--accent);}
.foot-col h4{font-size:14px;font-weight:700;color:var(--white);letter-spacing:.06em;margin-bottom:16px;}
.foot-col li+li{margin-top:10px;}
.foot-col a{font-size:14px;color:rgba(255,255,255,.7);}
.foot-col a:hover{color:var(--accent);}
.foot-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.7;}
.foot-contact svg{width:16px;height:16px;flex:0 0 auto;margin-top:5px;stroke:var(--accent);}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0 32px;font-size:13px;color:rgba(255,255,255,.52);flex-wrap:wrap;
}
.foot-bottom a{color:rgba(255,255,255,.62);}
.foot-bottom a:hover{color:var(--accent);}
.to-top{
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--accent);color:var(--brand-900);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
}
.to-top.show{opacity:1;visibility:visible;transform:none;}
.to-top svg{width:18px;height:18px;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 28px;}
}
@media (max-width:1023px){
  :root{--sect:80px;}
  .nav{height:68px;}
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .search{width:170px;}
  .bcard-lg{grid-column:span 12;grid-row:auto;}
  .bcard-md,.bcard-sm{grid-column:span 6;}
  .feat-grid{grid-template-columns:repeat(2,1fr);}
  .proof-grid{grid-template-columns:repeat(2,1fr);}
  .hero{min-height:76vh;}
  .hero-stats{position:static;margin-top:40px;right:auto;bottom:auto;display:inline-flex;}
  .hero-stamp{display:none;}
  .site-header.menu-open .nav-links{
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    position:absolute;left:0;right:0;top:100%;
    background:var(--white);border-bottom:1px solid var(--line);
    padding:16px 28px 22px;
    box-shadow:0 12px 24px -18px rgba(12,21,18,.4);
    animation:drawer .22s var(--ease);
  }
  .site-header.menu-open .nav-links a{font-size:18px;letter-spacing:.02em;padding:14px 8px;border-radius:10px;}
  .site-header.menu-open .nav-links a::after{display:none;}
  .site-header.menu-open .nav-links a.is-active{background:var(--paper);}
  @keyframes drawer{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:none;}}
}
@media (max-width:767px){
  :root{--sect:60px;}
  body{font-size:16px;}
  .container{padding:0 20px;}
  .search{display:none;}
  .hero{min-height:72vh;}
  .hero-inner{padding:72px 0 56px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{flex-wrap:wrap;gap:16px;padding:14px 16px;}
  .hero-stats .st{padding-left:16px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px;}
  .bcard-md,.bcard-sm{grid-column:span 12;}
  .feat-wide{grid-template-columns:1fr;}
  .feat-wide .thumb{min-height:200px;}
  .feat-grid{grid-template-columns:1fr;}
  .proof-grid{grid-template-columns:1fr;}
  .cms-row{grid-template-columns:1fr 36px;gap:12px;padding:20px 4px;}
  .cms-row time{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;}
  .cms-arrow{width:36px;height:36px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:60px 0;gap:28px;}
  .rail-card{flex:0 0 82%;}
  .foot-grid{grid-template-columns:1fr;gap:32px;}
}
@media (max-width:479px){
  .hero{min-height:72vh;}
  .hero h1{font-size:1.9rem;}
  .brand-text b{font-size:15px;}
  .hero-stats b{font-size:19px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .fade-up{opacity:1;transform:none;}
  .bcard:hover,.mini-card:hover,.rail-card:hover,.feat-wide:hover{transform:none;}
  .bcard:hover .thumb img,.mini-card:hover .thumb img,.rail-card:hover .thumb img,.feat-wide:hover .thumb img{transform:none;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0B2E24;
  --brand-700:#10483A;
  --brand-500:#1C6B54;
  --accent:#D8FF4A;
  --accent-strong:#B6E631;
  --warm:#FF6B35;
  --ink:#14181A;
  --ink-2:#4A5257;
  --ink-3:#8A9290;
  --line:#E3E7E1;
  --paper:#F6F7F4;
  --white:#FFFFFF;
  --dark:#0C1512;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(12,21,18,.05);
  --shadow-2:0 14px 34px -18px rgba(12,21,18,.28);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--white);
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1{font-size:clamp(2.1rem,4.6vw,3.5rem);line-height:1.15;font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.3;font-weight:750;letter-spacing:-.01em}
h3{font-size:1.15rem;line-height:1.5;font-weight:650}
p{color:var(--ink-2)}
:focus-visible{outline:2px solid var(--accent-strong);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:100px 0}
.section-alt{background:var(--paper)}
.section-head{margin-bottom:40px;max-width:760px}
.section-head .eyebrow{display:inline-block;font-size:12px;letter-spacing:.14em;font-weight:600;color:var(--brand-500);margin-bottom:12px}
.section-head h2{margin-bottom:14px}
.section-head p{font-size:16px}
.section-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-weight:600;font-size:15px;border-bottom:2px solid transparent;transition:border-color .2s var(--ease),gap .2s var(--ease)}
.section-link:hover{border-color:var(--accent-strong);gap:10px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:650;letter-spacing:.01em;
  border:1.5px solid transparent;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .25s var(--ease);
}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-900);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-accent{background:var(--accent);color:var(--brand-900)}
.btn-accent:hover{background:var(--accent-strong);transform:translateY(-1px);box-shadow:0 14px 30px -16px rgba(12,21,18,.5)}
.btn-outline{border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-line{border-color:var(--brand-500);color:var(--brand-700)}
.btn-line:hover{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.btn.is-loading{opacity:.65;pointer-events:none}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:120;background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 1px 2px rgba(12,21,18,.06)}
.nav{display:flex;align-items:center;gap:28px;height:76px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:38px;height:38px;border-radius:10px;background:var(--brand-900);display:grid;place-items:center;flex-shrink:0}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16px;font-weight:750;letter-spacing:.01em;color:var(--brand-900)}
.brand-text span{font-size:11px;letter-spacing:.18em;color:var(--ink-3)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:6px}
.nav-links a{position:relative;font-size:15.5px;font-weight:600;color:var(--ink-2);padding:6px 0;transition:color .2s var(--ease)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--accent-strong);transition:width .18s var(--ease)}
.nav-links a:hover{color:var(--brand-700)}
.nav-links a:hover::after{width:18px}
.nav-links a.is-active{color:var(--brand-900)}
.nav-links a.is-active::after{width:18px}
.nav-tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.search{display:flex;align-items:center;gap:8px;background:var(--paper);border:1.5px solid transparent;border-radius:999px;padding:9px 16px;min-width:220px;transition:border-color .2s var(--ease),background-color .2s var(--ease)}
.search:focus-within{border-color:var(--brand-500);background:var(--white)}
.search svg{width:17px;height:17px;stroke:var(--ink-3);flex-shrink:0}
.search input{width:100%;border:0;background:none;outline:none;font-size:14px}
.search input::placeholder{color:var(--ink-3)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;position:relative}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:50%;transform:translateX(-50%);width:20px;height:2px;background:var(--brand-900);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle span{top:21px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateX(-50%) translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg)}

/* ===== 分类页头（40vh 窄幅压图） ===== */
.cat-hero{
  position:relative;
  min-height:40vh;
  display:flex;
  align-items:flex-end;
  padding:72px 0 56px;
  background-image:linear-gradient(100deg,rgba(11,46,36,.92) 0%,rgba(11,46,36,.72) 48%,rgba(11,46,36,.34) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.cat-hero::after{content:"";position:absolute;right:-90px;bottom:-120px;width:340px;height:340px;border-radius:50%;border:1px solid rgba(216,255,74,.28);pointer-events:none}
.cat-hero .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.04em;color:rgba(255,255,255,.72);margin-bottom:22px}
.crumb a:hover{color:var(--accent)}
.crumb span[aria-current]{color:#fff}
.cat-hero h1{max-width:16em;margin-bottom:20px}
.cat-hero h1 em{font-style:normal;color:var(--accent)}
.hero-lead{max-width:640px;color:rgba(255,255,255,.84);font-size:16.5px;margin-bottom:8px}
.hero-lead + .hero-lead{margin-bottom:30px}
.stat-pills{display:flex;flex-wrap:wrap;gap:14px}
.pill{
  display:inline-flex;align-items:baseline;gap:10px;
  padding:12px 20px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
  backdrop-filter:blur(2px);
}
.pill b{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:20px;font-weight:700;color:var(--accent)}
.pill i{font-style:normal;font-size:13px;letter-spacing:.08em;color:rgba(255,255,255,.82)}

/* ===== 胶囊标签 ===== */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  padding:9px 18px;border-radius:999px;font-size:14px;font-weight:600;
  color:var(--ink-2);background:var(--paper);border:1px solid var(--line);
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.chip:hover{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}
.chip.is-on{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}

/* ===== 编号杂志式列表 ===== */
.mag-list{border-top:1px solid var(--line)}
.mag-item{
  display:grid;grid-template-columns:72px 1fr 260px;
  gap:32px;align-items:center;
  padding:30px 0;border-bottom:1px solid var(--line);
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.mag-item:hover{transform:translateX(4px)}
.mag-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:56px;height:52px;border-radius:8px;
  background:var(--accent);color:var(--brand-900);
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:19px;font-weight:700;letter-spacing:.04em;
}
.mag-body h3{margin-bottom:8px;transition:color .2s var(--ease)}
.mag-item:hover .mag-body h3{color:var(--brand-700)}
.mag-body p{font-size:15.5px;margin-bottom:12px}
.tag{
  display:inline-block;padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.04em;
  color:var(--brand-700);background:#EAF3EC;
}
.tag.is-hot{color:var(--warm);background:#FFF0E9}
.mag-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-3);letter-spacing:.06em}
.mag-media{position:relative;border-radius:var(--radius-img);overflow:hidden;aspect-ratio:3/2;background:var(--paper)}
.mag-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s var(--ease)}
.mag-item:hover .mag-media img{transform:scale(1.03)}

/* ===== 三步流程 ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px 28px;box-shadow:var(--shadow-1);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.step-card:hover{transform:translateY(-3px);border-color:var(--brand-500);box-shadow:var(--shadow-2)}
.step-no{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;letter-spacing:.16em;color:var(--brand-500);font-weight:700}
.step-card h3{margin:14px 0 10px}
.step-card p{font-size:15px}
.step-bar{margin-top:18px;height:3px;width:44px;background:var(--accent-strong);border-radius:2px}

/* ===== 搭配组合 ===== */
.combo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.combo-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.combo-card:hover{transform:translateY(-3px);border-color:var(--brand-500);box-shadow:var(--shadow-2)}
.combo-cover{aspect-ratio:16/9;overflow:hidden;background:var(--paper)}
.combo-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s var(--ease)}
.combo-card:hover .combo-cover img{transform:scale(1.03)}
.combo-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.combo-body h3{font-size:1.1rem}
.combo-list li{font-size:14.5px;color:var(--ink-2);padding-left:18px;position:relative;margin-bottom:6px}
.combo-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--accent-strong)}
.combo-body .btn{margin-top:auto;align-self:flex-start}

/* ===== FAQ ===== */
.faq{max-width:860px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;font-size:17px;font-weight:650;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--brand-700)}
.faq summary .fx{position:relative;width:18px;height:18px;flex-shrink:0;transition:transform .25s var(--ease)}
.faq summary .fx::before,.faq summary .fx::after{content:"";position:absolute;background:var(--brand-700);border-radius:2px}
.faq summary .fx::before{top:8px;left:0;width:18px;height:2px}
.faq summary .fx::after{left:8px;top:0;width:2px;height:18px;transition:opacity .2s var(--ease)}
.faq details[open] summary .fx{transform:rotate(45deg)}
.faq details[open] summary .fx::after{opacity:0}
.faq .answer{padding:0 0 26px 18px;border-left:2px solid var(--accent-strong);margin-left:2px}
.faq .answer p{font-size:15.5px}

/* ===== CTA ===== */
.cta-band{background:var(--dark);color:#fff;padding:80px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{color:#fff;max-width:18em;margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.72);font-size:16px;max-width:36em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-note{margin-top:14px;font-size:13px;letter-spacing:.08em;color:rgba(255,255,255,.55)}

/* ===== 页脚 ===== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.74);padding:72px 0 0;font-size:14.5px}
.site-footer .brand-text b{color:#fff}
.site-footer .brand-text span{color:rgba(255,255,255,.5)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.foot-about{margin:18px 0 20px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:34em}
.socials{display:flex;gap:10px}
.socials a{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.22);display:grid;place-items:center;color:rgba(255,255,255,.8);transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.socials a:hover{background:var(--accent);color:var(--brand-900);border-color:var(--accent)}
.socials svg{width:18px;height:18px}
.foot-col h4{color:#fff;font-size:15px;font-weight:650;margin-bottom:16px}
.foot-col ul li{margin-bottom:10px}
.foot-col a{color:rgba(255,255,255,.68);transition:color .2s var(--ease)}
.foot-col a:hover{color:var(--accent)}
.foot-contact li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.68);margin-bottom:12px}
.foot-contact svg{width:17px;height:17px;stroke:var(--accent-strong);flex-shrink:0;margin-top:5px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5)}
.foot-bottom a{color:rgba(255,255,255,.62)}
.foot-bottom a:hover{color:var(--accent)}
.to-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;
  background:var(--accent);color:var(--brand-900);display:grid;place-items:center;
  box-shadow:0 12px 26px -12px rgba(12,21,18,.6);
  opacity:0;visibility:hidden;transform:translateY(10px);z-index:150;
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
}
.to-top.is-on{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--accent-strong)}
.to-top svg{width:18px;height:18px}

/* ===== 入场动效 ===== */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .container{padding:0 28px}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;left:0;right:0;top:0;bottom:0;background:var(--white);
    flex-direction:column;align-items:flex-start;gap:6px;
    padding:104px 28px 90px;margin:0;
    transform:translateY(-100%);opacity:0;visibility:hidden;
    transition:transform .22s var(--ease),opacity .22s var(--ease),visibility .22s;
    z-index:110;
  }
  .nav-links a{font-size:18px;letter-spacing:.02em;width:100%;padding:14px 0;border-bottom:1px solid var(--line)}
  body.nav-open .nav-links{transform:none;opacity:1;visibility:visible}
  .nav-toggle{display:block}
  .search{display:none}
  .steps,.combo-grid{grid-template-columns:repeat(2,1fr)}
  .mag-item{grid-template-columns:64px 1fr 200px;gap:22px}
  .section{padding:76px 0}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .nav{gap:14px}
  .nav-tools .btn-sm{display:none}
  .cat-hero{min-height:38vh;padding:56px 0 40px}
  .cat-hero h1{font-size:2rem;max-width:none}
  .hero-lead{font-size:15.5px}
  .section{padding:60px 0}
  .section-head{margin-bottom:28px}
  .mag-item{grid-template-columns:1fr;gap:16px;padding:24px 0}
  .mag-media{order:-1;width:100%}
  .mag-num{width:50px;height:46px;font-size:17px}
  .steps,.combo-grid{grid-template-columns:1fr}
  .cta-band{padding:60px 0}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:28px;padding-bottom:32px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .cat-hero{min-height:36vh}
  .cat-hero h1{font-size:1.75rem}
  .pill{padding:9px 15px}
  .pill b{font-size:17px}
  .foot-grid{grid-template-columns:1fr}
  .brand-text span{letter-spacing:.12em}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-property:color,background-color,border-color,opacity!important}
  .reveal{opacity:1;transform:none}
  .mag-item:hover,.step-card:hover,.combo-card:hover{transform:none}
}

/* roulang page: article */
:root{
  --brand-900:#0B2E24;
  --brand-700:#10483A;
  --brand-500:#1C6B54;
  --accent:#D8FF4A;
  --accent-strong:#B6E631;
  --warm:#FF6B35;
  --ink:#14181A;
  --ink-2:#4A5257;
  --ink-3:#8A9290;
  --line:#E3E7E1;
  --paper:#F6F7F4;
  --white:#FFFFFF;
  --dark:#0C1512;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(12,21,18,.05);
  --shadow-2:0 14px 34px -18px rgba(12,21,18,.28);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--white);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;line-height:1.3}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-9999px;top:0;background:var(--brand-900);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:300}
.skip:focus{left:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 1px 2px rgba(12,21,18,.06)}
.nav{display:flex;align-items:center;gap:26px;height:76px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--brand-900);
  display:grid;place-items:center;flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--brand-900)}
.brand-text span{font-size:11px;letter-spacing:.16em;color:var(--ink-3)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:6px}
.nav-links a{
  position:relative;font-size:15px;font-weight:600;color:var(--ink-2);
  padding:6px 0;transition:color .18s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .18s var(--ease);
}
.nav-links a:hover{color:var(--brand-700)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--brand-900)}
.nav-links a.is-active::after{width:18px}
.nav-tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.search{
  display:flex;align-items:center;gap:8px;background:var(--paper);
  border:1.5px solid transparent;border-radius:999px;padding:9px 16px;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.search svg{width:16px;height:16px;stroke:var(--ink-3);flex-shrink:0}
.search input{border:0;background:transparent;outline:none;font-size:14px;width:140px}
.search input::placeholder{color:var(--ink-3)}
.search:focus-within{border-color:var(--brand-700);background:#fff}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:700;font-size:15px;
  padding:12px 22px;border:1.5px solid transparent;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--brand-700);color:#fff}
.btn-primary:hover{background:var(--brand-900);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:var(--brand-900)}
.btn-accent:hover{background:var(--accent-strong);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line);color:var(--brand-700);background:transparent}
.btn-ghost:hover{border-color:var(--brand-500);background:var(--paper)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:11px;
  background:#fff;align-items:center;justify-content:center;position:relative;z-index:3;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--brand-900);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-900);border-radius:2px;
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* ============ 阅读进度 ============ */
.read-progress{position:fixed;left:0;top:0;width:100%;height:3px;z-index:200;background:rgba(12,21,18,.06)}
.read-progress span{display:block;height:100%;width:0;background:var(--accent);transition:width .12s linear}

/* ============ 面包屑 ============ */
.crumb{padding:22px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;font-size:13px;color:var(--ink-3)}
.crumb li{display:flex;align-items:center;gap:8px;min-width:0}
.crumb li + li::before{content:"/";color:#C9D2CC}
.crumb a{color:var(--ink-2);transition:color .18s var(--ease)}
.crumb a:hover{color:var(--brand-700)}
.crumb li[aria-current="page"]{color:var(--ink-3);max-width:42ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;
  padding:26px 0 96px;align-items:start;
}
.article-main{min-width:0}
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  background:rgba(28,107,84,.1);color:var(--brand-700);font-size:12.5px;font-weight:700;letter-spacing:.04em;
}
.article-title{
  font-size:clamp(1.75rem,3.4vw,2.5rem);font-weight:750;line-height:1.35;
  letter-spacing:-.01em;color:var(--ink);margin-top:16px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:18px;padding-bottom:20px;border-bottom:1px solid var(--line);
  font-size:13.5px;color:var(--ink-3);
}
.article-meta time{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.02em;color:var(--ink-2)}
.meta-sep{width:1px;height:13px;background:var(--line)}
.meta-actions{margin-left:auto;display:flex;gap:8px}
.icon-btn{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--ink-2);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.icon-btn:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px)}
.icon-btn.is-done{background:var(--accent);border-color:var(--accent);color:var(--brand-900)}

/* ============ 正文 ============ */
.article-body{max-width:760px;margin-top:30px;font-size:17px;line-height:1.9;color:var(--ink)}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  position:relative;font-size:1.45rem;font-weight:750;line-height:1.45;
  margin:2.4em 0 .7em;padding-left:16px;color:var(--brand-900);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.34em;width:4px;height:18px;border-radius:2px;background:var(--accent);
}
.article-body h3{font-size:1.15rem;font-weight:700;margin:1.9em 0 .55em}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.3em}
.article-body li{margin:.4em 0}
.article-body blockquote{
  margin:1.6em 0;padding:14px 20px;background:var(--paper);
  border-left:3px solid var(--brand-700);border-radius:0 10px 10px 0;color:var(--ink-2);
}
.article-body img{border-radius:var(--radius-img);margin:1.6em auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-3);margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--paper);font-weight:700}
.article-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-900)}
.article-body code{background:var(--paper);padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.empty-state{
  border:1px dashed var(--line);background:var(--paper);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;
}
.empty-state svg{width:44px;height:44px;stroke:var(--brand-500);fill:none;stroke-width:1.6;margin:0 auto 16px}
.empty-state h2{font-size:1.2rem;font-weight:700;color:var(--brand-900)}
.empty-state p{margin:10px 0 22px;color:var(--ink-2);font-size:15px}

/* ============ 文末 ============ */
.article-foot{margin-top:46px;padding-top:26px;border-top:1px solid var(--line);max-width:760px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;padding:7px 15px;border-radius:999px;
  background:var(--paper);color:var(--ink-2);font-size:13.5px;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.tag:hover{background:var(--brand-700);color:#fff}
.share-bar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-top:24px;flex-wrap:wrap;
}
.share-bar p{font-size:13.5px;color:var(--ink-3)}
.share-bar .icon-btn:hover{background:var(--accent);border-color:var(--accent);color:var(--brand-900)}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:34px}
.pager a{
  display:block;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 20px;background:#fff;box-shadow:var(--shadow-1);
  transition:border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.pager a:hover{border-color:var(--brand-500);transform:translateY(-3px);box-shadow:var(--shadow-2)}
.pager span{display:block;font-size:12.5px;letter-spacing:.1em;color:var(--ink-3)}
.pager b{display:block;margin-top:6px;font-size:17px;font-weight:700;color:var(--brand-900)}
.pager em{display:block;margin-top:6px;font-size:13.5px;font-style:normal;color:var(--ink-2)}

/* ============ 相关推荐 ============ */
.related{margin-top:56px;max-width:760px}
.related h2{font-size:1.3rem;font-weight:750;color:var(--brand-900)}
.related-list{list-style:none;margin:18px 0 0;border-top:1px solid var(--line)}
.related-list li{border-bottom:1px solid var(--line)}
.related-list a{
  display:flex;align-items:center;gap:16px;padding:16px 0;
  transition:padding-left .22s var(--ease);
}
.related-list a:hover{padding-left:6px}
.related-list img{width:100px;height:66px;object-fit:cover;border-radius:10px;flex-shrink:0}
.related-list b{display:block;font-size:16.5px;font-weight:700;color:var(--ink);transition:color .2s var(--ease)}
.related-list a:hover b{color:var(--brand-700)}
.related-list em{display:block;margin-top:4px;font-style:normal;font-size:13.5px;color:var(--ink-3)}
.related-list .arrow{margin-left:auto;color:var(--brand-500);flex-shrink:0}

/* ============ 侧栏 ============ */
.side-card{
  border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;
  padding:22px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:15px;font-weight:750;color:var(--brand-900);margin-bottom:14px}
.side-list{list-style:none}
.side-list li + li{margin-top:12px;padding-top:12px;border-top:1px dashed var(--line)}
.side-list a{display:flex;align-items:baseline;gap:8px;font-size:14.5px;color:var(--ink-2);transition:color .18s var(--ease)}
.side-list a:hover{color:var(--brand-700)}
.side-list i{font-style:normal;font-family:ui-monospace,Menlo,monospace;font-size:12px;color:var(--brand-500)}
.side-cta{background:var(--dark);border-color:var(--dark);color:#fff;box-shadow:none}
.side-cta h3{color:#fff}
.side-cta p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.72);margin-bottom:18px}

/* ============ 咨询 CTA ============ */
.cta-band{background:var(--dark);color:#fff;padding:76px 0;margin-top:20px}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(1.5rem,2.6vw,2.05rem);font-weight:750;color:#fff}
.cta-inner p{margin-top:12px;font-size:15.5px;color:rgba(255,255,255,.72);max-width:48ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.7);padding:72px 0 28px;font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.site-footer .brand-text b{color:#fff}
.site-footer .brand-text span{color:rgba(255,255,255,.5)}
.site-footer .brand-mark{background:rgba(255,255,255,.08)}
.foot-about{margin:18px 0 20px;line-height:1.85;color:rgba(255,255,255,.62);max-width:34ch}
.socials{display:flex;gap:10px}
.socials a{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.16);
  display:grid;place-items:center;color:rgba(255,255,255,.75);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.socials a svg{width:17px;height:17px}
.socials a:hover{background:var(--accent);border-color:var(--accent);color:var(--brand-900)}
.foot-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.04em}
.foot-col ul{list-style:none}
.foot-col li + li{margin-top:11px}
.foot-col a{color:rgba(255,255,255,.65);transition:color .18s var(--ease)}
.foot-col a:hover{color:var(--accent)}
.foot-contact li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.65);line-height:1.7}
.foot-contact svg{width:16px;height:16px;stroke:var(--accent);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;margin-top:4px}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}
.foot-bottom a{color:rgba(255,255,255,.65)}
.foot-bottom a:hover{color:var(--accent)}
.to-top{
  position:fixed;right:24px;bottom:28px;width:48px;height:48px;border-radius:50%;
  border:none;background:var(--accent);color:var(--brand-900);display:grid;place-items:center;
  opacity:0;visibility:hidden;z-index:120;
  transition:opacity .25s var(--ease),visibility .25s var(--ease),transform .25s var(--ease),background .2s var(--ease);
}
.to-top svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.to-top.is-visible{opacity:1;visibility:visible}
.to-top:hover{background:var(--accent-strong);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:44px}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 280px}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .nav-links{
    position:fixed;left:0;right:0;top:0;bottom:0;z-index:1;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:104px 24px 60px;overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-12px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none}
  .nav-links a{font-size:18px;letter-spacing:.02em;padding:16px 0;border-bottom:1px solid var(--line)}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--brand-700)}
  .search{display:none}
  .nav-toggle{display:flex}
  .cta-band{padding:60px 0}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .nav{gap:14px;height:66px}
  .site-header.is-scrolled .nav{height:60px}
  .article-layout{padding:20px 0 64px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:1.28rem}
  .related-list img{width:84px;height:58px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px}
  .pager{grid-template-columns:1fr}
  .cta-inner{gap:26px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-text b{font-size:15px}
  .meta-actions{margin-left:0;width:100%}
  .foot-grid{grid-template-columns:1fr}
  .related-list a{gap:12px}
  .related-list img{width:72px;height:52px}
  .article-layout{padding-bottom:52px}
  .to-top{right:16px;bottom:18px;width:44px;height:44px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.001ms !important;animation-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --brand-900:#0B2E24;
  --brand-700:#10483A;
  --brand-500:#1C6B54;
  --accent:#D8FF4A;
  --accent-strong:#B6E631;
  --warm:#FF6B35;
  --ink:#14181A;
  --ink-2:#4A5257;
  --ink-3:#8A9290;
  --line:#E3E7E1;
  --paper:#F6F7F4;
  --white:#FFFFFF;
  --dark:#0C1512;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,21,18,.05);
  --sh-2:0 14px 34px -18px rgba(12,21,18,.28);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;line-height:1.85;color:var(--ink);background:var(--white);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;font-weight:750;line-height:1.28;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--white);border-bottom:1px solid var(--line);transition:box-shadow .24s ease}
.site-header.is-scrolled{box-shadow:0 1px 2px rgba(12,21,18,.06)}
.nav{display:flex;align-items:center;height:76px;transition:height .24s ease}
.site-header.is-scrolled .nav{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:38px;height:38px;border-radius:10px;background:var(--brand-900);display:grid;place-items:center;flex:0 0 auto}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16px;letter-spacing:.02em;color:var(--ink)}
.brand-text span{font-size:10px;letter-spacing:.24em;color:var(--ink-3)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:34px}
.nav-links a{position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;white-space:nowrap;transition:color .18s ease}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);transition:width .18s ease}
.nav-links a:hover{color:var(--brand-700)}
.nav-links a:hover::after{width:18px}
.nav-links a.is-active{color:var(--brand-700);font-weight:650}
.nav-links a.is-active::after{width:18px}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{display:flex;align-items:center;gap:8px;background:var(--paper);border:1px solid transparent;border-radius:var(--r-pill);padding:9px 16px;transition:border-color .18s ease,background .18s ease}
.search svg{width:16px;height:16px;stroke:var(--ink-3);flex:0 0 auto;fill:none}
.search input{border:0;background:transparent;outline:none;font-size:14px;width:132px}
.search:focus-within{border-color:var(--brand-700);background:var(--white)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border:1.5px solid transparent;border-radius:var(--r-btn);font-size:15px;font-weight:600;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:var(--brand-700);color:#fff}
.btn-primary:hover{background:var(--brand-900);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:var(--brand-900)}
.btn-accent:hover{background:var(--accent-strong);transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-700)}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none}
.nav-toggle{display:none;position:relative;z-index:82;width:42px;height:42px;border:1px solid var(--line);background:var(--white);border-radius:10px;cursor:pointer}
.nav-toggle span{position:absolute;left:11px;right:11px;top:50%;height:2px;background:var(--ink);transform:translateY(-50%);transition:background .2s ease}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;right:0;height:2px;background:var(--ink);transition:transform .2s ease,top .2s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}

/* ---------- hero ---------- */
.hero-page{position:relative;overflow:hidden;background:var(--brand-900);color:#fff;padding:40px 0 64px}
.hero-page::after{content:"";position:absolute;inset:0;background:radial-gradient(760px 340px at 86% -10%,rgba(216,255,74,.14),transparent 70%);pointer-events:none}
.hero-inner{position:relative;z-index:1}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);padding-top:14px}
.crumb a{color:rgba(255,255,255,.72)}
.crumb a:hover{color:var(--accent)}
.crumb span.sep{color:rgba(255,255,255,.32)}
.crumb .now{color:rgba(255,255,255,.5)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-top:34px;padding:6px 14px;border:1px solid rgba(216,255,74,.35);border-radius:var(--r-pill);font-size:12px;letter-spacing:.16em;color:var(--accent)}
.hero-page h1{margin-top:20px;font-size:clamp(2rem,4.2vw,3.05rem);font-weight:800;line-height:1.16;letter-spacing:-.02em;color:#fff;max-width:900px}
.hero-page .lead{margin-top:18px;max-width:660px;font-size:17px;color:rgba(255,255,255,.78)}
.hero-stats{display:flex;flex-wrap:wrap;gap:30px;margin-top:34px}
.hero-stat{border-left:1px solid rgba(216,255,74,.55);padding-left:14px}
.hero-stat b{display:block;font-family:var(--mono);font-size:26px;line-height:1.25;color:var(--accent)}
.hero-stat span{font-size:12.5px;letter-spacing:.06em;color:rgba(255,255,255,.66)}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:rgba(255,255,255,.84);font-size:14px;cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease}
.chip:hover{background:var(--accent);border-color:var(--accent);color:var(--brand-900)}
.chip.is-on{background:var(--accent);border-color:var(--accent);color:var(--brand-900);font-weight:600}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section.alt{background:var(--paper)}
.sect-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:40px}
.sect-head h2{font-size:clamp(1.5rem,2.6vw,2.05rem)}
.sect-head p{margin-top:12px;max-width:640px;color:var(--ink-2);font-size:15.5px}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-size:14.5px;font-weight:600;white-space:nowrap}
.link-more::after{content:"→";transition:transform .18s ease}
.link-more:hover::after{transform:translateX(4px)}

/* ---------- bento + timeline ---------- */
.bento-wrap{display:grid;grid-template-columns:220px 1fr;gap:44px;align-items:start}
.timeline{position:relative;padding-left:24px}
.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:var(--line)}
.tl-item{position:relative;padding-bottom:26px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-24px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--accent);border:2px solid var(--brand-700)}
.tl-item h4{font-size:15px;font-weight:650}
.tl-item p{margin-top:6px;font-size:14px;line-height:1.72;color:var(--ink-2)}
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.b-card{grid-column:span 3;display:flex;flex-direction:column;overflow:hidden;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);transition:transform .25s cubic-bezier(.2,.7,.3,1),border-color .25s ease,box-shadow .25s ease}
.b-card:hover{transform:translateY(-3px);border-color:var(--brand-500);box-shadow:var(--sh-2)}
.b-card.wide{grid-column:span 6}
.b-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--paper)}
.b-card.small .b-media{aspect-ratio:3/2}
.b-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1)}
.b-card:hover .b-media img{transform:scale(1.03)}
.b-body{display:flex;flex-direction:column;gap:10px;flex:1;padding:20px 20px 22px}
.b-body h3{font-size:17px}
.b-card.wide .b-body h3{font-size:21px}
.b-body p{font-size:14.5px;line-height:1.75;color:var(--ink-2)}
.b-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-family:var(--mono);font-size:12.5px;color:var(--ink-3)}
.badge{align-self:flex-start;display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:4px;background:#EAF4EF;color:var(--brand-700);font-size:12px;font-weight:600;letter-spacing:.06em}
.badge.hot{background:#FFEDE5;color:#C64A19}

/* ---------- scenario cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:30px;transition:transform .25s cubic-bezier(.2,.7,.3,1),border-color .25s ease,box-shadow .25s ease}
.scene:hover{transform:translateY(-3px);border-color:var(--brand-500);box-shadow:var(--sh-2)}
.scene .num{font-family:var(--mono);font-size:13px;letter-spacing:.1em;color:var(--brand-500)}
.scene h3{margin-top:14px;font-size:19px}
.scene p{margin-top:10px;font-size:15px;color:var(--ink-2)}
.scene ul{margin-top:18px;display:flex;flex-direction:column;gap:9px}
.scene li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2)}
.scene li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:2px;background:var(--accent)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.step{padding-top:22px;border-top:2px solid var(--line);transition:border-color .25s ease}
.step:hover{border-color:var(--brand-500)}
.step b{display:block;font-family:var(--mono);font-size:22px;color:var(--brand-700)}
.step h3{margin-top:12px;font-size:17px}
.step p{margin-top:8px;font-size:14.5px;line-height:1.75;color:var(--ink-2)}

/* ---------- facts ---------- */
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.fact{background:var(--white);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:var(--r-card);padding:24px 22px;transition:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s ease}
.fact:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.fact b{display:block;font-size:17px}
.fact p{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--ink-2)}

/* ---------- faq ---------- */
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 4px;font-size:17px;font-weight:650;cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq .plus{position:relative;flex:0 0 auto;width:20px;height:20px;transition:transform .25s ease}
.faq .plus::before,.faq .plus::after{content:"";position:absolute;background:var(--brand-700)}
.faq .plus::before{left:0;top:9px;width:20px;height:2px}
.faq .plus::after{left:9px;top:0;width:2px;height:20px}
.faq details[open] .plus{transform:rotate(45deg)}
.faq .ans{margin:0 0 24px 2px;padding-left:18px;border-left:2px solid var(--accent);font-size:15.5px;color:var(--ink-2)}

/* ---------- cta band ---------- */
.cta-band{background:var(--dark);color:#fff;padding:88px 0}
.cta-inner{max-width:760px;margin:0 auto;text-align:center}
.cta-inner h2{font-size:clamp(1.6rem,3vw,2.3rem);color:#fff}
.cta-inner p{margin-top:14px;color:rgba(255,255,255,.72)}
.cta-form{display:grid;grid-template-columns:1fr 1fr auto;gap:14px;margin-top:32px;align-items:end}
.field{display:flex;flex-direction:column;gap:7px;text-align:left}
.field label{font-size:12.5px;letter-spacing:.06em;color:rgba(255,255,255,.62)}
.field input{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);border-radius:var(--r-btn);padding:13px 15px;color:#fff;outline:none;transition:border-color .2s ease,background .2s ease}
.field input::placeholder{color:rgba(255,255,255,.4)}
.field input:focus{border-color:var(--accent);background:rgba(255,255,255,.1)}
.cta-form .btn{height:49px}
.form-msg{margin-top:16px;min-height:22px;font-size:14px;color:var(--accent)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:72px 0 0;font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.site-footer .brand-text b{color:#fff}
.site-footer .brand-text span{color:rgba(255,255,255,.5)}
.foot-about{margin-top:18px;max-width:330px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62)}
.socials{display:flex;gap:10px;margin-top:20px}
.socials a{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.16);display:grid;place-items:center;color:rgba(255,255,255,.8);transition:background .2s ease,color .2s ease,border-color .2s ease}
.socials svg{width:18px;height:18px;fill:none;stroke:currentColor}
.socials a:hover{background:var(--accent);border-color:var(--accent);color:var(--brand-900)}
.foot-col h4{font-size:14px;font-weight:650;letter-spacing:.04em;color:#fff}
.foot-col ul{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.foot-col a{color:rgba(255,255,255,.68)}
.foot-col a:hover{color:var(--accent)}
.foot-contact li{display:flex;gap:10px;align-items:flex-start;line-height:1.7}
.foot-contact svg{width:16px;height:16px;flex:0 0 auto;margin-top:5px;fill:none;stroke:var(--accent)}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0 28px;font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- floating ---------- */
.to-top{position:fixed;right:24px;bottom:26px;z-index:70;width:46px;height:46px;border:0;border-radius:50%;background:var(--accent);color:var(--brand-900);display:grid;place-items:center;cursor:pointer;opacity:0;pointer-events:none;transform:translateY(10px);transition:opacity .25s ease,transform .25s ease,background .2s ease;box-shadow:0 10px 24px -10px rgba(12,21,18,.5)}
.to-top.is-show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--accent-strong)}
.to-top svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.mobile-cta{display:none;position:fixed;left:0;right:0;bottom:0;z-index:75;background:var(--white);border-top:1px solid var(--line);padding:12px 20px}
.mobile-cta .btn{width:100%}

/* ---------- responsive ---------- */
@media(max-width:1279px){
  .container{max-width:1200px}
}
@media(max-width:1023px){
  .bento-wrap{grid-template-columns:1fr;gap:32px}
  .timeline{display:none}
  .bento{grid-template-columns:repeat(6,1fr)}
  .b-card{grid-column:span 3}
  .b-card.wide{grid-column:span 6}
  .grid-3{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .facts{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:991px){
  .nav-toggle{display:block}
  .nav-links{position:fixed;left:0;right:0;top:0;height:100vh;margin:0;padding:96px 24px 40px;flex-direction:column;align-items:flex-start;gap:0;background:var(--white);transform:translateY(-12px);opacity:0;pointer-events:none;overflow-y:auto;transition:opacity .22s ease,transform .22s ease;z-index:80}
  .nav-links.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav-links a{width:100%;padding:16px 0;font-size:18px;letter-spacing:.02em;border-bottom:1px solid var(--line)}
  .nav-links a::after{display:none}
  .section{padding:76px 0}
}
@media(max-width:767px){
  body{padding-bottom:74px}
  .container{padding:0 20px}
  .search{display:none}
  .section{padding:64px 0}
  .sect-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:30px}
  .bento{grid-template-columns:1fr}
  .b-card,.b-card.wide{grid-column:span 1}
  .grid-3{grid-template-columns:1fr}
  .hero-page{padding:28px 0 54px}
  .hero-page .lead{font-size:16px}
  .hero-stats{gap:20px}
  .cta-form{grid-template-columns:1fr}
  .cta-form .btn{height:48px}
  .mobile-cta{display:block}
  .to-top{bottom:90px;right:18px}
}
@media(max-width:520px){
  .hero-page h1{font-size:1.85rem}
  .hero-stat b{font-size:22px}
  .steps,.facts{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{padding:64px 0}
}
@media(prefers-reduced-motion:reduce){
  *{transition-duration:.01ms!important;animation-duration:.01ms!important}
  .b-card:hover,.scene:hover,.fact:hover{transform:none}
  .b-card:hover .b-media img{transform:none}
  html{scroll-behavior:auto}
}