/* roulang page: index */
:root{
  --ink-900:#0B0E11;
  --ink-800:#14181D;
  --ink-700:#1F252B;
  --paper:#F6F5F1;
  --surface:#FFFFFF;
  --line:#E5E3DC;
  --text-strong:#12161A;
  --text-muted:#5C646D;
  --accent:#C8F04A;
  --accent-ink:#0B0E11;
  --accent-2:#6C5CE7;
  --success:#2FA36B;
  --error:#E2503C;
  --warning:#D69A2D;
  --radius-s:8px;
  --radius-m:10px;
  --radius-c:14px;
  --radius-l:18px;
  --nav-h:64px;
  --container:1240px;
  --pad:32px;
  --section-y:104px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-card:0 12px 32px -12px rgba(11,14,17,.22);
  --shadow-float:0 24px 48px -20px rgba(11,14,17,.28);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--text-strong);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h2{font-size:clamp(26px,3.2vw,44px);line-height:1.2;font-weight:800;letter-spacing:-.01em;}
h3{font-size:21px;line-height:1.35;font-weight:700;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad);}
.section{padding:var(--section-y) 0;}
.section--tight{padding:72px 0;}
.section--paper{background:var(--paper);}
.section--surface{background:var(--surface);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.section-head p{color:var(--text-muted);font-size:15px;margin-top:12px;max-width:56ch;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:#6E8C1F;text-transform:none;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);display:block;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-m);
  font-size:15px;font-weight:700;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:transform .16s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);}
.btn-primary:hover{background:#B7E03A;border-color:#B7E03A;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);background:#A5CC33;border-color:#A5CC33;}
.btn-ghost{background:transparent;color:var(--text-strong);border-color:var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-ghost-light{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.24);}
.btn-ghost-light:hover{background:rgba(255,255,255,.16);transform:translateY(-2px);}
.btn-ghost-light:active{transform:translateY(0);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;height:auto;padding:2px 0;
  font-size:15px;font-weight:700;color:var(--text-strong);
  border-bottom:2px solid var(--accent);
}
.btn-text:hover{border-bottom-width:2px;color:#5F7A18;}
.btn:disabled,.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;}
.btn-block{width:100%;}

/* ---------- badge ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 9px;border-radius:6px;
  font-size:13px;font-weight:600;background:rgba(200,240,74,.14);color:#6E8C1F;white-space:nowrap;
}
.badge--violet{background:rgba(108,92,231,.12);color:#4B3EC4;}
.badge--success{background:rgba(47,163,107,.12);color:#2FA36B;}
.badge--warning{background:rgba(214,154,45,.14);color:#A6761B;}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;height:var(--nav-h);
  background:transparent;border-bottom:1px solid transparent;
  transition:height .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header.is-scrolled{
  height:56px;background:rgba(246,245,241,.86);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.nav-inner{
  height:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;color:#fff;}
.site-header.is-scrolled .brand{color:var(--text-strong);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  border:1.5px solid currentColor;position:relative;display:block;
}
.brand-mark::before{
  content:"";position:absolute;left:8px;top:8px;right:8px;bottom:8px;
  border:1.5px solid var(--accent);border-radius:3px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:16px;font-weight:800;letter-spacing:.02em;}
.brand-sub{font-size:11px;color:var(--text-muted);letter-spacing:.16em;}
.site-header:not(.is-scrolled) .brand-sub{color:rgba(255,255,255,.62);}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;font-size:14px;font-weight:600;letter-spacing:.01em;
  color:rgba(255,255,255,.86);padding:6px 0;
}
.site-header.is-scrolled .nav-link{color:var(--text-muted);}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-link:hover{color:#fff;}
.site-header.is-scrolled .nav-link:hover{color:var(--text-strong);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:#fff;}
.site-header.is-scrolled .nav-link.is-active{color:var(--text-strong);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--radius-m);display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.24);background:transparent;color:#fff;cursor:pointer;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.site-header.is-scrolled .icon-btn{border-color:var(--line);color:var(--text-strong);background:var(--surface);}
.icon-btn:hover{background:rgba(255,255,255,.14);}
.site-header.is-scrolled .icon-btn:hover{background:var(--paper);}
.nav-search{display:flex;align-items:center;gap:8px;}
.nav-search input{
  width:220px;height:48px;padding:0 14px;border-radius:var(--radius-m);
  border:1px solid var(--line);background:var(--surface);color:var(--text-strong);font-size:14px;
}
.nav-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(200,240,74,.25);}
.nav-cta{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{display:none;}

.drawer-mask{
  position:fixed;inset:0;background:rgba(11,14,17,.5);z-index:80;opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:88vw;max-width:400px;z-index:90;
  background:var(--ink-900);color:#fff;padding:28px 24px 24px;
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{background:transparent;border:1px solid rgba(255,255,255,.24);color:#fff;width:40px;height:40px;border-radius:var(--radius-m);cursor:pointer;}
.drawer-link{
  font-size:19px;font-weight:700;color:rgba(255,255,255,.92);padding:16px 0;
  border-bottom:1px solid var(--ink-700);
}
.drawer-link.is-active{color:var(--accent);}
.drawer-foot{margin-top:auto;padding-top:24px;}

/* ---------- hero ---------- */
.hero{
  position:relative;background:linear-gradient(180deg,#14181D 0%,#0B0E11 100%);
  color:#fff;overflow:hidden;
}
.hero-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding-top:calc(var(--nav-h) + 68px);padding-bottom:88px;
  position:relative;
}
.hero-grid::after{
  content:"";position:absolute;top:calc(var(--nav-h) + 48px);bottom:72px;left:50%;width:1px;
  background:rgba(255,255,255,.12);
}
.hero-copy{position:relative;z-index:2;}
.hero-title{
  font-size:clamp(34px,5.4vw,68px);line-height:1.08;font-weight:800;letter-spacing:-.01em;margin-top:18px;
}
.hero-title em{font-style:normal;color:var(--accent);}
.hero-sub{margin-top:22px;font-size:clamp(16px,1.5vw,19px);color:rgba(255,255,255,.74);max-width:30ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.stats{display:flex;gap:44px;margin-top:52px;flex-wrap:wrap;}
.stat-num{font-size:clamp(28px,3vw,36px);font-weight:800;line-height:1.1;color:var(--accent);}
.stat-label{font-size:13px;color:rgba(255,255,255,.6);margin-top:6px;}
.hero-visual{position:relative;z-index:2;}
.hero-media{
  position:relative;border-radius:var(--radius-l);overflow:hidden;aspect-ratio:4/5;background:var(--ink-800);
}
.hero-media img{width:100%;height:100%;object-fit:cover;animation:heroZoom 12s var(--ease) forwards;}
@keyframes heroZoom{from{transform:scale(1);}to{transform:scale(1.04);}}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,14,17,.92) 0%,rgba(11,14,17,.28) 46%,rgba(11,14,17,0) 100%);
}
.hero-float{
  position:absolute;left:-18px;bottom:28px;z-index:3;
  display:flex;align-items:center;gap:14px;
  padding:14px 18px;border-radius:12px;
  background:rgba(20,24,29,.62);border:1px solid rgba(255,255,255,.16);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.hero-float strong{display:block;font-size:15px;font-weight:700;color:#fff;}
.hero-float span{font-size:12px;color:rgba(255,255,255,.66);}
.hero-float i{width:8px;height:8px;border-radius:999px;background:var(--accent);display:block;flex:none;}

/* ---------- timeline ---------- */
.timeline-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.timeline-aside{position:sticky;top:96px;}
.timeline-aside p{color:var(--text-muted);font-size:15px;margin-top:14px;margin-bottom:22px;}
.timeline{position:relative;padding-left:30px;}
.timeline-axis{position:absolute;left:4px;top:8px;bottom:8px;width:1px;background:var(--line);}
.timeline-progress{position:absolute;left:4px;top:8px;width:1px;height:0;background:linear-gradient(180deg,var(--accent) 0%,var(--accent-2) 100%);transition:height .2s var(--ease);}
.tl-item{position:relative;padding:0 0 34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:-30px;top:9px;width:10px;height:10px;border-radius:999px;background:var(--ink-700);
  transition:background-color .24s var(--ease),box-shadow .24s var(--ease);
}
.tl-item.is-active .tl-dot{background:var(--accent);box-shadow:0 0 0 4px rgba(200,240,74,.18);}
.tl-time{font-size:13px;font-weight:700;color:#6E8C1F;letter-spacing:.04em;}
.tl-title{font-size:21px;font-weight:700;margin-top:8px;}
.tl-desc{font-size:14px;color:var(--text-muted);margin-top:8px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.tl-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px;}

/* ---------- spotlight ---------- */
.spot-grid{display:grid;grid-template-columns:8fr 4fr;gap:24px;align-items:start;}
.spot-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-c);
  overflow:hidden;transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.spot-card:hover{border-color:rgba(200,240,74,.6);transform:translateY(-2px);box-shadow:var(--shadow-card);}
.spot-card img{width:100%;height:100%;object-fit:cover;transition:transform .2s var(--ease);}
.spot-media{overflow:hidden;background:var(--paper);}
.spot-card:hover .spot-media img{transform:scale(1.03);}
.spot-body{padding:26px 28px 28px;}
.spot-avatar{width:64px;height:64px;border-radius:999px;overflow:hidden;border:1px solid var(--line);}
.spot-name{font-size:18px;font-weight:700;margin-top:16px;}
.spot-role{font-size:13px;color:var(--text-muted);margin-top:4px;}
.spot-note{font-size:14px;color:var(--text-muted);margin-top:12px;line-height:1.7;}
.spot-main .spot-media{aspect-ratio:16/10;}
.spot-side{display:grid;gap:24px;}
.spot-side .spot-media{aspect-ratio:16/9;}
.spot-side .spot-card:nth-child(2){transform:translateY(32px);}
.spot-side .spot-card:nth-child(2):hover{transform:translateY(30px);}

/* ---------- ticket ---------- */
.ticket-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.ticket{
  position:relative;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-c);padding:30px 28px;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.ticket:hover{border-color:rgba(11,14,17,.24);transform:translateY(-2px);box-shadow:var(--shadow-card);}
.ticket.is-featured{background:var(--ink-900);border-color:var(--accent);color:#fff;padding-top:33px;}
.ticket.is-featured::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--accent);border-radius:var(--radius-c) var(--radius-c) 0 0;}
.ticket-flag{position:absolute;right:20px;top:20px;}
.ticket-name{font-size:20px;font-weight:800;}
.ticket-price{font-size:32px;font-weight:800;margin-top:14px;line-height:1.2;}
.ticket-price small{font-size:14px;font-weight:600;color:var(--text-muted);margin-left:6px;}
.ticket.is-featured .ticket-price small{color:rgba(255,255,255,.6);}
.ticket-list{margin-top:24px;display:grid;gap:12px;flex:1;}
.ticket-list li{display:flex;gap:10px;font-size:15px;line-height:1.7;align-items:flex-start;}
.ticket-list li::before{
  content:"";flex:none;width:18px;height:18px;margin-top:5px;border-radius:999px;
  border:1px solid var(--accent);background:rgba(200,240,74,.16);position:relative;
}
.ticket-list li.is-off::before{border-color:var(--line);background:transparent;}
.ticket-list li.is-off{color:var(--text-muted);}
.ticket .btn{margin-top:26px;}
.compare{margin-top:40px;border:1px solid var(--line);border-radius:var(--radius-c);background:var(--surface);overflow:hidden;}
.compare summary{
  list-style:none;cursor:pointer;height:60px;display:flex;align-items:center;justify-content:space-between;
  padding:0 26px;font-size:16px;font-weight:700;
}
.compare summary::-webkit-details-marker{display:none;}
.compare summary .sign{position:relative;width:16px;height:16px;flex:none;transition:transform .24s var(--ease);}
.compare summary .sign::before,.compare summary .sign::after{content:"";position:absolute;background:var(--text-strong);}
.compare summary .sign::before{left:0;right:0;top:7px;height:2px;}
.compare summary .sign::after{top:0;bottom:0;left:7px;width:2px;transition:transform .24s var(--ease);}
.compare[open] summary .sign::after{transform:scaleY(0);}
.compare-body{border-top:1px solid var(--line);padding:0 26px 26px;}
.compare table{margin-top:20px;font-size:14px;}
.compare th,.compare td{text-align:left;padding:14px 12px;border-bottom:1px solid var(--line);}
.compare thead th{font-size:13px;color:var(--text-muted);font-weight:600;background:var(--paper);}
.compare tbody tr:nth-child(even){background:var(--paper);}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-c);overflow:hidden;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.news-card:hover{border-color:rgba(11,14,17,.24);transform:translateY(-2px);box-shadow:var(--shadow-card);}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--paper);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;gap:12px;}
.news-cat{display:flex;}
.news-title{font-size:18px;font-weight:700;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-title a:hover{color:#5F7A18;}
.news-summary{font-size:14px;color:var(--text-muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1;}
.news-meta{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:14px;}
.news-meta time{font-size:13px;color:var(--text-muted);}
.news-meta .arrow{font-size:14px;font-weight:700;color:var(--text-strong);transition:transform .2s var(--ease);}
.news-card:hover .news-meta .arrow{transform:translateX(4px);}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-c);padding:48px 24px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:10px;background:var(--surface);
}
.empty-state .ico{width:40px;height:40px;border-radius:999px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--text-muted);}
.empty-state strong{font-size:15px;font-weight:700;}
.empty-state span{font-size:13px;color:var(--text-muted);}

/* ---------- proof ---------- */
.proof-band{background:linear-gradient(180deg,#14181D 0%,#0B0E11 100%);color:#fff;border-radius:var(--radius-l);padding:46px 40px;}
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.proof-item{border-left:1px solid var(--ink-700);padding-left:22px;}
.proof-item:first-child{border-left:0;padding-left:0;}
.proof-item strong{display:block;font-size:clamp(24px,2.4vw,32px);font-weight:800;color:var(--accent);}
.proof-item span{display:block;font-size:13px;color:rgba(255,255,255,.66);margin-top:8px;}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px;}
.quote{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-c);padding:26px 24px;}
.quote p{font-size:15px;line-height:1.8;color:var(--text-strong);}
.quote footer{margin-top:16px;font-size:13px;color:var(--text-muted);}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px 0;font-size:17px;font-weight:700;transition:background-color .24s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .sign{position:relative;width:18px;height:18px;flex:none;}
.faq-item summary .sign::before,.faq-item summary .sign::after{content:"";position:absolute;background:var(--text-strong);transition:transform .24s var(--ease);}
.faq-item summary .sign::before{left:0;right:0;top:8px;height:2px;}
.faq-item summary .sign::after{top:0;bottom:0;left:8px;width:2px;}
.faq-item[open] summary .sign::after{transform:rotate(90deg) scaleY(0);}
.faq-item[open] summary{color:#5F7A18;}
.faq-item .answer{padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--text-muted);max-width:78ch;}
.faq-item[open]{background:var(--paper);}

/* ---------- cta form ---------- */
.cta-section{
  background:linear-gradient(180deg,rgba(11,14,17,.94) 0%,rgba(11,14,17,.97) 100%),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.cta-points{margin-top:26px;display:grid;gap:14px;}
.cta-points li{display:flex;gap:12px;font-size:16px;color:rgba(255,255,255,.82);line-height:1.7;}
.cta-points li::before{content:"";flex:none;width:16px;height:2px;background:var(--accent);margin-top:14px;}
.form{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-c);padding:30px 28px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.field label{font-size:13px;font-weight:600;color:rgba(255,255,255,.82);}
.field input,.field select{
  height:48px;padding:0 14px;border-radius:var(--radius-m);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);color:#fff;font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,rgba(255,255,255,.7) 50%),linear-gradient(135deg,rgba(255,255,255,.7) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field select option{color:#12161A;}
.field input::placeholder{color:rgba(255,255,255,.4);}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(200,240,74,.25);}
.field.is-error input,.field.is-error select{border-color:var(--error);}
.field .err{font-size:13px;color:#FF8A78;display:none;}
.field.is-error .err{display:block;}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:rgba(255,255,255,.72);margin:6px 0 22px;}
.check input{width:20px;height:20px;accent-color:var(--accent);margin-top:2px;flex:none;}
.form-note{font-size:13px;color:rgba(255,255,255,.5);margin-top:14px;}
.form-success{
  display:none;margin-top:16px;border-left:3px solid var(--accent);background:rgba(200,240,74,.08);
  padding:12px 16px;border-radius:var(--radius-s);font-size:14px;color:#E7F7B8;
}
.form-success.is-show{display:block;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);border-top:1px solid var(--ink-700);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{color:#fff;}
.site-footer p{font-size:14px;line-height:1.8;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--ink-700);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- reveal ---------- */
body.reveal-ready .reveal{opacity:0;transform:translateY(12px);}
body.reveal-ready .reveal.in-view{opacity:1;transform:translateY(0);transition:opacity .32s var(--ease),transform .32s var(--ease);}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  body.reveal-ready .reveal{opacity:1;transform:none;}
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  :root{--pad:32px;--section-y:96px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  :root{--section-y:80px;}
  .nav-links{display:none;}
  .nav-search{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:44px;padding-top:calc(var(--nav-h) + 48px);padding-bottom:72px;}
  .hero-grid::after{display:none;}
  .hero-media{aspect-ratio:16/11;}
  .hero-float{left:16px;}
  .timeline-layout{grid-template-columns:1fr;gap:36px;}
  .timeline-aside{position:static;}
  .spot-grid{grid-template-columns:1fr;}
  .spot-side{grid-template-columns:1fr 1fr;}
  .spot-side .spot-card:nth-child(2){transform:none;}
  .spot-side .spot-card:nth-child(2):hover{transform:translateY(-2px);}
  .ticket-grid{grid-template-columns:1fr;}
  .proof-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
  .proof-item{border-left:0;padding-left:0;border-top:1px solid var(--ink-700);padding-top:18px;}
  .proof-item:first-child{border-top:0;padding-top:0;}
  .quote-grid{grid-template-columns:1fr;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:899px){
  .news-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:599px){
  :root{--pad:20px;--section-y:64px;--nav-h:56px;}
  .hero-title{font-size:34px;}
  .hero-actions .btn{width:100%;}
  .stats{gap:28px;}
  .spot-side{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .form{padding:24px 20px;}
  .proof-band{padding:32px 24px;}
  .footer-grid{grid-template-columns:1fr;}
  .compare summary{padding:0 18px;}
  .compare-body{padding:0 18px 20px;}
  .compare table,.compare thead,.compare tbody,.compare th,.compare td,.compare tr{display:block;width:100%;}
  .compare thead{display:none;}
  .compare tbody tr{border:1px solid var(--line);border-radius:var(--radius-c);margin-top:16px;padding:8px 4px;background:var(--surface)!important;}
  .compare td{border-bottom:1px dashed var(--line);}
  .compare td:last-child{border-bottom:0;}
  .compare td::before{content:attr(data-label);display:block;font-size:12px;color:var(--text-muted);margin-bottom:4px;}
}

/* roulang page: category1 */
:root{
  --ink-900:#0B0E11;
  --ink-800:#14181D;
  --ink-700:#1F252B;
  --paper:#F6F5F1;
  --surface:#FFFFFF;
  --line:#E5E3DC;
  --text-strong:#12161A;
  --text-muted:#5C646D;
  --accent:#C8F04A;
  --accent-ink:#0B0E11;
  --accent-deep:#6E8C1F;
  --accent-2:#6C5CE7;
  --success:#2FA36B;
  --error:#E2503C;
  --warning:#D69A2D;
  --radius-s:8px;
  --radius-m:10px;
  --radius-l:14px;
  --radius-xl:18px;
  --shadow-hover:0 12px 32px -12px rgba(11,14,17,.22);
  --shadow-pop:0 24px 48px -20px rgba(11,14,17,.28);
  --container:1240px;
  --pad:32px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--paper);
  color:var(--text-strong);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px;border-radius:4px;}

.container{max-width:var(--container);margin:0 auto;padding:0 var(--pad);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(246,245,241,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:height .24s var(--ease),background .24s var(--ease);
}
.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--pad);
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.site-header.is-scrolled .nav-inner{height:56px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:28px;height:28px;
  border:1.5px solid var(--ink-900);
  border-radius:7px;
  position:relative;
  flex:0 0 auto;
}
.brand-mark::before{
  content:"";position:absolute;left:8px;top:6px;width:1.5px;height:15px;
  background:var(--ink-900);transform:rotate(12deg);border-radius:2px;
}
.brand-mark::after{
  content:"";position:absolute;left:4px;bottom:8px;width:18px;height:1.5px;
  background:var(--accent);border-radius:2px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:16px;font-weight:800;letter-spacing:.02em;}
.brand-sub{font-size:11px;color:var(--text-muted);letter-spacing:.14em;}

.nav-links{display:flex;align-items:center;gap:30px;flex:1 1 auto;justify-content:center;}
.nav-link{
  position:relative;
  font-size:14px;font-weight:600;letter-spacing:.01em;
  color:var(--text-muted);
  padding:18px 0;
  transition:color .2s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--accent);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--text-strong);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text-strong);}
.nav-link.is-active::after{transform:scaleX(1);}

.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search input{
  width:220px;height:40px;
  border-radius:var(--radius-m);
  border:1px solid var(--line);
  background:var(--surface);
  padding:0 14px;
  font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:#98A0A8;}
.nav-search input:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(200,240,74,.28);
}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  cursor:pointer;
  color:var(--ink-900);
  transition:border-color .2s var(--ease),transform .16s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:rgba(11,14,17,.28);transform:translateY(-2px);}
.icon-btn:active{transform:none;}
.nav-cta{height:42px;padding:0 20px;font-size:14px;}
.nav-toggle{display:none;}

/* ============ 抽屉 ============ */
.drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:88vw;max-width:360px;
  background:var(--ink-900);
  color:var(--paper);
  z-index:120;
  padding:24px 22px 28px;
  display:flex;flex-direction:column;gap:6px;
  transform:translateX(102%);
  transition:transform .3s var(--ease);
  overflow-y:auto;
}
.drawer.is-open{transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-brand{font-size:15px;font-weight:800;letter-spacing:.02em;}
.drawer-brand span{display:block;font-size:11px;font-weight:500;color:rgba(246,245,241,.6);letter-spacing:.14em;}
.drawer-close{
  width:38px;height:38px;border-radius:var(--radius-m);
  border:1px solid rgba(255,255,255,.18);
  background:transparent;color:var(--paper);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
}
.drawer-link{
  font-size:20px;font-weight:700;line-height:2.1;
  color:rgba(246,245,241,.92);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:color .2s var(--ease);
}
.drawer-link:hover{color:var(--accent);}
.drawer-link.is-active{color:var(--accent);}
.drawer-foot{margin-top:auto;padding-top:22px;}
.drawer-foot .btn{width:100%;}
.drawer-backdrop{
  position:fixed;inset:0;background:rgba(11,14,17,.5);
  z-index:110;opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.drawer-backdrop.is-open{opacity:1;visibility:visible;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--radius-m);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .16s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--accent);color:var(--accent-ink);}
.btn-primary:hover{background:#B7E03A;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-primary:active{background:#A5CC33;transform:none;box-shadow:none;}
.btn-ghost{background:transparent;border-color:rgba(11,14,17,.35);color:var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);transform:translateY(-2px);}
.btn-ghost:active{transform:none;}
.btn-light{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.24);color:var(--paper);}
.btn-light:hover{background:rgba(255,255,255,.16);transform:translateY(-2px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--ink-900);
  border-bottom:2px solid var(--accent);
  padding-bottom:3px;
  transition:letter-spacing .2s var(--ease),color .2s var(--ease);
}
.btn-text:hover{letter-spacing:.06em;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 通用徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;
  border-radius:6px;
  font-size:13px;font-weight:600;
  background:rgba(200,240,74,.16);
  color:var(--accent-deep);
  white-space:nowrap;
}
.badge-soft{background:rgba(108,92,231,.12);color:#4C3FC7;}
.badge-line{background:transparent;border:1px solid var(--line);color:var(--text-muted);}
.badge-dark{background:rgba(200,240,74,.14);color:var(--accent);}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-muted);
  padding:28px 0 18px;
}
.breadcrumb a{transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--ink-900);}
.breadcrumb .sep{color:#B6BCC2;}
.breadcrumb .current{color:var(--text-strong);font-weight:600;}

/* ============ Hero ============ */
.hero-card{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  align-items:stretch;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-xl);
  overflow:hidden;
  min-height:340px;
}
.hero-copy{padding:44px 44px 46px;display:flex;flex-direction:column;justify-content:center;gap:18px;}
.hero-copy h1{
  font-size:clamp(30px,3.6vw,44px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.01em;
}
.hero-lead{font-size:16px;line-height:1.85;color:var(--text-muted);max-width:44ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:6px;}
.hero-media{position:relative;overflow:hidden;min-height:300px;margin:0;}
.hero-media img{width:100%;height:100%;object-fit:cover;transform:scale(1.001);}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,14,17,.42) 0%,rgba(11,14,17,.08) 46%,rgba(11,14,17,0) 100%);
}
.hero-meta{
  position:absolute;left:22px;bottom:22px;right:22px;
  z-index:2;
  display:flex;flex-wrap:wrap;gap:10px;
}
.hero-meta span{
  display:inline-flex;align-items:center;gap:6px;
  height:30px;padding:0 12px;
  border-radius:999px;
  font-size:13px;font-weight:600;
  color:#F6F5F1;
  background:rgba(11,14,17,.42);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.16);
}

/* ============ 板块 ============ */
.section{padding:92px 0 0;}
.section:last-of-type{padding-bottom:96px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:30px;}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.2;font-weight:800;letter-spacing:-.01em;
}
.section-head p{margin-top:10px;font-size:15px;color:var(--text-muted);max-width:60ch;}

/* ============ 时间线 ============ */
.timeline-wrap{
  display:grid;
  grid-template-columns:minmax(0,3fr) minmax(0,9fr);
  gap:38px;
  align-items:start;
}
.timeline-aside{position:sticky;top:96px;}
.timeline-aside h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:800;line-height:1.24;letter-spacing:-.01em;
}
.timeline-aside p{margin-top:12px;font-size:15px;color:var(--text-muted);}
.timeline-aside .btn-text{margin-top:20px;}
.timeline-list{position:relative;}
.timeline-list::before{
  content:"";position:absolute;left:5px;top:14px;bottom:14px;width:1px;
  background:linear-gradient(180deg,rgba(200,240,74,.9) 0%,rgba(108,92,231,.45) 100%);
  opacity:.7;
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:118px minmax(0,1fr);
  gap:22px;
  padding:20px 0 20px 30px;
  border-bottom:1px solid var(--line);
}
.tl-item:last-child{border-bottom:none;}
.tl-item::before{
  content:"";position:absolute;left:0;top:28px;
  width:11px;height:11px;border-radius:50%;
  background:var(--ink-700);
  box-shadow:0 0 0 0 rgba(200,240,74,.2);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.tl-item:hover::before{background:var(--accent);box-shadow:0 0 0 4px rgba(200,240,74,.2);}
.tl-time{
  font-size:14px;font-weight:700;color:var(--accent-deep);
  letter-spacing:.02em;padding-top:2px;
}
.tl-body h3{font-size:20px;line-height:1.4;font-weight:700;}
.tl-body p{font-size:14px;line-height:1.8;color:var(--text-muted);margin-top:8px;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}

/* ============ 报名入口条 ============ */
.signup-strip{
  background:linear-gradient(180deg,#14181D 0%,#0B0E11 100%);
  border-radius:var(--radius-xl);
  padding:34px 36px;
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:32px;
  align-items:center;
  color:var(--paper);
  position:relative;
  overflow:hidden;
}
.signup-strip h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:800;line-height:1.25;letter-spacing:-.01em;
}
.signup-strip p{margin-top:12px;font-size:15px;color:rgba(246,245,241,.68);max-width:52ch;}
.signup-strip .strip-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;}
.signup-strip figure{margin:0;border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--ink-700);}
.signup-strip figure img{width:100%;height:190px;object-fit:cover;}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:38px;align-items:start;}
.faq-intro h2{font-size:clamp(24px,2.6vw,34px);font-weight:800;line-height:1.2;letter-spacing:-.01em;}
.faq-intro p{margin-top:12px;font-size:15px;color:var(--text-muted);}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:14px 4px;
  font-size:16px;font-weight:700;
  cursor:pointer;
  transition:background .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:rgba(0,0,0,.014);}
.faq-icon{
  position:relative;flex:0 0 auto;
  width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink-900);border-radius:2px;
  transition:opacity .24s var(--ease);
}
.faq-icon::before{left:5px;right:5px;top:50%;height:1.6px;transform:translateY(-50%);}
.faq-icon::after{top:5px;bottom:5px;left:50%;width:1.6px;transform:translateX(-50%);}
.faq-item[open] .faq-icon{transform:rotate(90deg);border-color:var(--accent);}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-item[open] summary{color:var(--ink-900);}
.faq-body{
  padding:2px 0 22px;
  font-size:15px;line-height:1.85;color:var(--text-muted);
  background:var(--paper);
  border-radius:0 0 var(--radius-m) var(--radius-m);
  padding-left:14px;padding-right:14px;
}

/* ============ 底部导航卡 ============ */
.next-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.next-card{
  display:block;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  padding:26px 26px 24px;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.next-card:hover{border-color:rgba(200,240,74,.8);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.next-card h3{font-size:18px;font-weight:700;}
.next-card p{margin-top:8px;font-size:14px;color:var(--text-muted);}
.next-card .arrow{display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-size:14px;font-weight:700;color:var(--ink-900);}
.next-card .arrow i{display:block;width:18px;height:2px;background:var(--accent);border-radius:2px;transition:width .2s var(--ease);}
.next-card:hover .arrow i{width:30px;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  background:linear-gradient(180deg,#14181D 0%,#0B0E11 100%);
  color:rgba(246,245,241,.74);
  border-top:1px solid var(--ink-700);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{border-color:rgba(246,245,241,.8);}
.footer-brand .brand-mark::before{background:rgba(246,245,241,.8);}
.footer-brand .brand-main{color:var(--paper);}
.footer-brand .brand-sub{color:rgba(246,245,241,.5);}
.footer-quote{
  font-size:14px;line-height:1.85;color:rgba(246,245,241,.66);
  border-left:2px solid var(--accent);
  padding-left:14px;
  max-width:34ch;
}
.footer-col h4{font-size:14px;font-weight:700;color:var(--paper);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(246,245,241,.72);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--accent);}
.footer-col li span{font-size:14px;color:rgba(246,245,241,.72);}
.footer-bottom{
  border-top:1px solid var(--ink-700);
  padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(246,245,241,.5);
}
.footer-bottom a{color:rgba(246,245,241,.6);}
.footer-bottom a:hover{color:var(--accent);}

/* ============ 响应式 ============ */
@media (max-width:1120px){
  .nav-links{gap:20px;}
  .nav-search input{width:170px;}
}
@media (max-width:1024px){
  :root{--pad:24px;}
  .section{padding-top:80px;}
  .timeline-wrap{grid-template-columns:1fr;gap:26px;}
  .timeline-aside{position:static;}
  .faq-grid{grid-template-columns:1fr;gap:24px;}
  .signup-strip{grid-template-columns:1fr;}
  .signup-strip figure img{height:170px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:900px){
  .nav-links,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .hero-card{grid-template-columns:1fr;}
  .hero-media{min-height:230px;order:-1;}
  .hero-media::after{background:linear-gradient(180deg,rgba(11,14,17,.30) 0%,rgba(11,14,17,0) 60%);}
  .hero-copy{padding:30px 26px 34px;}
  .next-cards{grid-template-columns:1fr;}
}
@media (max-width:640px){
  :root{--pad:20px;}
  .section{padding-top:64px;}
  .section:last-of-type{padding-bottom:64px;}
  .hero-copy{padding:26px 20px 30px;}
  .hero-actions .btn{width:100%;}
  .tl-item{grid-template-columns:1fr;gap:8px;padding-left:26px;}
  .timeline-list::before{left:4px;}
  .signup-strip{padding:24px 20px;}
  .signup-strip .strip-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{justify-content:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --ink-900:#0B0E11;
  --ink-800:#14181D;
  --ink-700:#1F252B;
  --paper:#F6F5F1;
  --surface:#FFFFFF;
  --line:#E5E3DC;
  --text-strong:#12161A;
  --text-muted:#5C646D;
  --accent:#C8F04A;
  --accent-hover:#B7E03A;
  --accent-active:#A5CC33;
  --accent-ink:#0B0E11;
  --accent-deep:#6E8C1F;
  --accent-2:#6C5CE7;
  --success:#2FA36B;
  --error:#E2503C;
  --warning:#D69A2D;
  --radius-sm:8px;
  --radius-md:10px;
  --radius-lg:14px;
  --radius-xl:18px;
  --shadow-hover:0 12px 32px -12px rgba(11,14,17,.22);
  --shadow-float:0 24px 48px -20px rgba(11,14,17,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
  --header-h:64px;
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--text-strong);
  background:var(--surface);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px}
::selection{background:var(--accent);color:var(--accent-ink)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:104px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-title{font-size:clamp(26px,3.2vw,40px);line-height:1.2;font-weight:800;letter-spacing:-.01em}
.section-sub{margin-top:12px;font-size:15px;color:var(--text-muted);max-width:620px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-md);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .16s var(--ease),background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:var(--accent-ink);border:1px solid var(--accent)}
.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);transform:translateY(-2px)}
.btn-primary:active{background:var(--accent-active);border-color:var(--accent-active);transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text-strong);border:1px solid var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;
  color:var(--text-strong);border-bottom:2px solid var(--accent);padding-bottom:3px;
  transition:font-weight .16s var(--ease),color .16s var(--ease);
}
.btn-text:hover{font-weight:800;color:var(--accent-deep)}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:6px;font-size:13px;font-weight:600;line-height:1;
}
.badge-cat{background:rgba(200,240,74,.14);color:var(--accent-deep)}
.badge-soft{background:rgba(108,92,231,.1);color:#4B3FBF}
.badge-status{background:rgba(47,163,107,.12);color:var(--success)}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:48px;padding-top:24px;border-top:1px solid var(--line)}
.tag-label{font-size:13px;font-weight:600;color:var(--text-muted);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;font-size:13px;font-weight:600;color:var(--text-muted);
  transition:border-color .16s var(--ease),color .16s var(--ease),background-color .16s var(--ease);
}
.tag:hover{border-color:var(--accent);color:var(--text-strong);background:rgba(200,240,74,.12)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,245,241,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:height .24s var(--ease),background-color .24s var(--ease);
}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 32px;
  height:var(--header-h);display:flex;align-items:center;gap:32px;
  transition:height .24s var(--ease);
}
.site-header.is-shrunk{--header-h:56px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand-mark{
  width:34px;height:34px;border-radius:var(--radius-sm);
  border:1.5px solid var(--ink-900);position:relative;display:block;flex:none;
  background:linear-gradient(180deg,rgba(200,240,74,.18),rgba(200,240,74,0));
}
.brand-mark::before{content:"";position:absolute;left:9px;top:8px;width:14px;height:1.5px;background:var(--ink-900)}
.brand-mark::after{content:"";position:absolute;left:15px;top:8px;width:1.5px;height:18px;background:var(--ink-900)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:16px;font-weight:800;letter-spacing:.01em}
.brand-sub{font-size:11px;font-weight:600;color:var(--text-muted);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-link{
  position:relative;font-size:14px;font-weight:600;letter-spacing:.01em;color:var(--text-muted);
  padding:6px 0;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left center;transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--text-strong)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text-strong)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search input{
  width:220px;height:44px;padding:0 16px;border-radius:var(--radius-md);
  border:1px solid var(--line);background:var(--surface);font-size:14px;
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.nav-search input::placeholder{color:#9AA1A9}
.nav-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(200,240,74,.25)}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--radius-md);color:var(--text-strong);
  border:1px solid transparent;transition:background-color .16s var(--ease),border-color .16s var(--ease);
}
.icon-btn:hover{background:var(--paper);border-color:var(--line)}
.nav-toggle{display:none}

/* ---------- 抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(11,14,17,.5);z-index:90;opacity:0;transition:opacity .24s var(--ease)}
.drawer-mask.is-open{opacity:1}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:88vw;max-width:400px;z-index:95;
  background:var(--ink-900);color:var(--paper);padding:24px 24px 32px;
  display:flex;flex-direction:column;gap:24px;
  transform:translateX(102%);transition:transform .28s var(--ease);
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between}
.drawer-brand{font-size:15px;font-weight:800;letter-spacing:.02em}
.drawer .icon-btn{color:var(--paper);border-color:rgba(255,255,255,.16)}
.drawer .icon-btn:hover{background:rgba(255,255,255,.08)}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-top:8px}
.drawer-links a{
  font-size:20px;line-height:2;font-weight:700;color:rgba(246,245,241,.86);
  border-bottom:1px solid rgba(255,255,255,.08);padding:4px 0;
}
.drawer-links a:hover,.drawer-links a.is-active{color:var(--accent)}
.drawer-cta{margin-top:auto;width:100%}

/* ---------- 阅读进度 ---------- */
.read-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:120;background:transparent;pointer-events:none}
.read-progress span{display:block;height:100%;width:0;background:var(--accent);transition:width .1s linear}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-muted)}
.breadcrumb a{transition:color .16s var(--ease)}
.breadcrumb a:hover{color:var(--accent-deep)}
.breadcrumb .sep{color:#B6BCC3}
.breadcrumb .current{color:var(--text-strong);font-weight:700}

/* ---------- 文章头 ---------- */
.article-head{padding:56px 0 0}
.article-head .head-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px}
.article-title{
  font-size:clamp(28px,3.6vw,44px);line-height:1.22;font-weight:800;letter-spacing:-.01em;
  margin-top:16px;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:20px;padding-bottom:24px;border-bottom:1px solid var(--line);
  font-size:13px;color:var(--text-muted);
}
.meta-dot{width:3px;height:3px;border-radius:999px;background:#C3C8CE;display:inline-block}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,740px) 240px;gap:64px;
  justify-content:center;padding-top:56px;padding-bottom:96px;align-items:start;
}
.article-main{min-width:0}
.article-body{
  font-size:17px;line-height:1.9;letter-spacing:.01em;color:var(--text-strong);max-width:740px;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  font-size:clamp(22px,2.4vw,26px);line-height:1.35;font-weight:800;
  margin:2.4em 0 .8em;padding-left:14px;border-left:3px solid var(--accent);
}
.article-body h3{font-size:20px;line-height:1.45;font-weight:700;margin:1.8em 0 .6em}
.article-body h4{font-size:17px;font-weight:700;margin:1.6em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.4em}
.article-body ul li{list-style:disc}
.article-body ol li{list-style:decimal}
.article-body li{margin:.35em 0;line-height:1.9}
.article-body blockquote{
  margin:1.6em 0;padding:20px;background:var(--paper);
  border-left:3px solid var(--accent);border-radius:0 var(--radius-md) var(--radius-md) 0;
  color:var(--text-strong);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:#4E6B14;text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:3px}
.article-body a:hover{font-weight:700;text-decoration-thickness:2px}
.article-body img{width:100%;height:auto;border-radius:var(--radius-lg);margin:1.6em 0}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--text-muted);text-align:center;margin-top:.6em}
.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:12px 14px;text-align:left}
.article-body th{background:var(--paper);font-weight:700}
.article-body tbody tr:nth-child(even){background:#FBFAF7}
.article-body code{background:var(--paper);padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body pre{background:var(--ink-900);color:#E9E9E4;padding:20px;border-radius:var(--radius-lg);overflow:auto;margin:1.6em 0}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

/* ---------- 目录 ---------- */
.article-aside{position:sticky;top:96px}
.toc{border-left:1px solid var(--line);padding-left:20px}
.toc-title{font-size:13px;font-weight:700;color:var(--text-muted);margin-bottom:12px;letter-spacing:.04em}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;font-size:15px;line-height:2;color:var(--text-muted);
  padding-left:12px;border-left:2px solid transparent;margin-left:-21px;padding-left:19px;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.toc-list a:hover{color:var(--text-strong)}
.toc-list a.is-current{color:var(--text-strong);border-left-color:var(--accent);font-weight:700}
.toc-list .toc-lv3 a{font-size:14px;padding-left:32px}

/* ---------- 底部导航卡 ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:40px}
.post-nav-card{
  display:block;padding:24px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.post-nav-card:hover{border-color:rgba(200,240,74,.8);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.post-nav-label{font-size:13px;font-weight:600;color:var(--text-muted)}
.post-nav-title{display:block;margin-top:8px;font-size:17px;font-weight:700;line-height:1.5}
.back-row{margin-top:32px}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-lg);padding:56px 24px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.empty-state svg{color:#B6BCC3}
.empty-title{font-size:15px;font-weight:700}
.empty-sub{font-size:13px;color:var(--text-muted);max-width:420px}
.empty-state .btn{margin-top:12px}

/* ---------- 相关阅读 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.post-card:hover{border-color:rgba(11,14,17,.24);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.post-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--paper)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-title{font-size:17px;line-height:1.5;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-title a:hover{color:var(--accent-deep)}
.post-desc{font-size:14px;line-height:1.7;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{display:flex;align-items:center;gap:10px;margin-top:auto;font-size:13px;color:var(--text-muted)}

/* ---------- CTA 报名 ---------- */
.cta-band{background:linear-gradient(180deg,#14181D 0%,#0B0E11 100%);color:var(--paper)}
.cta-inner{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
.cta-title{font-size:clamp(26px,3vw,38px);line-height:1.24;font-weight:800;letter-spacing:-.01em}
.cta-lead{margin-top:16px;font-size:16px;line-height:1.8;color:rgba(246,245,241,.72)}
.cta-points{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.cta-points li{display:flex;gap:12px;font-size:16px;line-height:1.7;color:rgba(246,245,241,.9)}
.cta-points li::before{content:"";width:14px;height:2px;background:var(--accent);margin-top:14px;flex:none}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:600;color:rgba(246,245,241,.86)}
.field input,.field select{
  height:48px;padding:0 16px;border-radius:var(--radius-md);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);color:var(--paper);
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease),background-color .16s var(--ease);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,rgba(246,245,241,.7) 50%),linear-gradient(135deg,rgba(246,245,241,.7) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field select option{color:#12161A}
.field input::placeholder{color:rgba(246,245,241,.42)}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(200,240,74,.25)}
.field.has-error input{border-color:var(--error)}
.field-error{font-size:13px;color:#F08A7A}
.checkbox{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:rgba(246,245,241,.72)}
.checkbox input{width:20px;height:20px;accent-color:var(--accent);margin-top:2px}
.form-actions{grid-column:1 / -1}
.form-actions .btn{width:100%}
.form-note{grid-column:1 / -1;font-size:13px;color:rgba(246,245,241,.55)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:880px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  position:relative;display:flex;align-items:center;min-height:56px;padding:16px 44px 16px 0;
  font-size:16px;font-weight:700;cursor:pointer;list-style:none;
  transition:color .16s var(--ease),background-color .16s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before,.faq-item summary::after{
  content:"";position:absolute;top:50%;background:var(--text-strong);
  transition:transform .24s var(--ease),background-color .16s var(--ease);
}
.faq-item summary::before{width:14px;height:2px;right:6px;transform:translateY(-50%)}
.faq-item summary::after{width:2px;height:14px;right:12px;transform:translateY(-50%)}
.faq-item summary:hover{color:var(--accent-deep)}
.faq-item summary:hover::before,.faq-item summary:hover::after{background:var(--accent-deep)}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(90deg)}
.faq-item[open] summary{color:var(--text-strong)}
.faq-answer{padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--text-muted);max-width:760px;background:transparent;animation:faqIn .24s var(--ease)}
.faq-answer p{margin:0 0 .8em}
.faq-answer p:last-child{margin-bottom:0}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(246,245,241,.72);padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;color:var(--paper)}
.footer-brand .brand-mark{border-color:rgba(246,245,241,.6)}
.footer-brand .brand-mark::before,.footer-brand .brand-mark::after{background:rgba(246,245,241,.85)}
.footer-brand .brand-main{color:var(--paper)}
.footer-brand .brand-sub{color:rgba(246,245,241,.6)}
.footer-desc{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(246,245,241,.6);max-width:340px}
.footer-title{font-size:14px;font-weight:700;color:var(--paper);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;transition:color .16s var(--ease)}
.footer-links a:hover{color:var(--accent)}
.footer-contact{font-size:14px;line-height:1.8}
.footer-contact span{display:block;color:rgba(246,245,241,.6)}
.footer-contact strong{color:var(--paper);font-weight:600}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--ink-700);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(246,245,241,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,740px);padding-bottom:88px}
  .article-aside{display:none}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-inner{padding:0 24px}
  .section{padding:96px 0}
  .cta-inner{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:899px){
  .nav-links,.nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .nav-right{gap:8px}
  .article-head{padding-top:40px}
  .post-nav{grid-template-columns:1fr}
}
@media (max-width:599px){
  .container{padding:0 20px}
  .nav-inner{padding:0 20px}
  .section{padding:64px 0}
  .article-layout{padding-top:40px;padding-bottom:64px}
  .article-body{font-size:16px}
  .related-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .brand-sub{display:none}
  .section-head{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink-900:#0B0E11;
  --ink-800:#14181D;
  --ink-700:#1F252B;
  --paper:#F6F5F1;
  --surface:#FFFFFF;
  --line:#E5E3DC;
  --text-strong:#12161A;
  --text-muted:#5C646D;
  --accent:#C8F04A;
  --accent-strong:#B7E03A;
  --accent-press:#A5CC33;
  --accent-ink:#0B0E11;
  --accent-2:#6C5CE7;
  --success:#2FA36B;
  --error:#E2503C;
  --warning:#D69A2D;
  --radius-sm:8px;
  --radius-md:10px;
  --radius-lg:14px;
  --radius-xl:18px;
  --shadow-hover:0 12px 32px -12px rgba(11,14,17,.22);
  --shadow-float:0 24px 48px -20px rgba(11,14,17,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:64px;
  --section-y:104px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--text-strong);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{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;}
svg{display:block;}
:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px;}
.num,.stat-value,.time{font-variant-numeric:tabular-nums;}

.container{max-width:1240px;margin:0 auto;padding:0 32px;}
.section{padding:var(--section-y) 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:48px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--text-muted);text-transform:uppercase;}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);display:block;}
h1{font-size:clamp(34px,5.4vw,68px);line-height:1.08;font-weight:800;letter-spacing:-.01em;}
h2{font-size:clamp(26px,3.2vw,44px);line-height:1.2;font-weight:800;letter-spacing:-.01em;}
h3{font-size:21px;line-height:1.35;font-weight:700;}
.lead{font-size:17px;line-height:1.8;color:var(--text-muted);}
.muted{color:var(--text-muted);}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,245,241,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:height 240ms var(--ease),background 240ms var(--ease);
}
.nav-inner{
  max-width:1240px;margin:0 auto;padding:0 32px;
  height:var(--nav-h);
  display:flex;align-items:center;gap:40px;
  transition:height 240ms var(--ease);
}
.site-header.is-scrolled .nav-inner{height:56px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border:1.5px solid var(--ink-900);border-radius:9px;position:relative;flex:0 0 auto;
}
.brand-mark::before{content:"";position:absolute;left:6px;top:6px;width:9px;height:9px;border:1.5px solid var(--ink-900);border-radius:2px;}
.brand-mark::after{content:"";position:absolute;right:6px;bottom:7px;width:12px;height:2px;background:var(--accent);border-radius:2px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:15px;font-weight:800;letter-spacing:.02em;color:var(--text-strong);}
.brand-sub{font-size:11px;font-weight:600;letter-spacing:.14em;color:var(--text-muted);}
.nav-links{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;font-size:14px;font-weight:600;letter-spacing:.01em;color:var(--text-strong);
  padding:6px 0;white-space:nowrap;transition:color 200ms var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left center;transition:transform 200ms var(--ease);
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text-strong);}
.nav-link.is-active::after{transform:scaleX(1);background:var(--ink-900);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.nav-search input{
  width:220px;height:48px;padding:0 16px;border:1px solid var(--line);border-radius:var(--radius-md);
  background:var(--surface);font-size:14px;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.nav-search input::placeholder{color:#9AA1A8;}
.nav-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(200,240,74,.28);}
.icon-btn{
  width:40px;height:40px;display:none;align-items:center;justify-content:center;border-radius:var(--radius-md);
  color:var(--ink-900);transition:background 200ms var(--ease),transform 200ms var(--ease);
}
.icon-btn:hover{background:rgba(11,14,17,.06);}
.icon-btn:active{transform:translateY(1px);}
.nav-cta{display:inline-flex;}
.nav-toggle{display:none;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-md);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform 160ms var(--ease),background 160ms var(--ease),color 160ms var(--ease),border-color 160ms var(--ease),box-shadow 160ms var(--ease);
}
.btn-primary{background:var(--accent);color:var(--accent-ink);}
.btn-primary:hover{background:var(--accent-strong);transform:translateY(-2px);}
.btn-primary:active{background:var(--accent-press);transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink-900);border:1px solid var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-ghost-light{background:rgba(255,255,255,.08);color:#F6F5F1;border:1px solid rgba(255,255,255,.24);}
.btn-ghost-light:hover{background:rgba(255,255,255,.16);transform:translateY(-2px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--text-strong);
  padding:4px 0;border-bottom:2px solid var(--accent);transition:opacity 200ms var(--ease),transform 200ms var(--ease);
}
.btn-text:hover{opacity:.75;transform:translateX(2px);}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.badge-cat{background:rgba(200,240,74,.14);color:#6E8C1F;}
.badge-neutral{background:rgba(11,14,17,.06);color:var(--text-muted);}
.badge-accent2{background:rgba(108,92,231,.12);color:#4B3FBE;}
.badge-success{background:rgba(47,163,107,.12);color:var(--success);}
.badge-dark{background:rgba(255,255,255,.1);color:#E8E6DF;}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);}
.breadcrumb .sep{color:#B7B4AC;}
.breadcrumb .current{color:var(--text-strong);font-weight:600;}

/* ---------- hero ---------- */
.page-hero{
  padding:calc(var(--nav-h) + 44px) 0 72px;
  text-align:center;
  background:
    radial-gradient(120% 90% at 50% 0%,rgba(200,240,74,.16) 0%,rgba(246,245,241,0) 60%),
    var(--paper);
  border-bottom:1px solid var(--line);
}
.page-hero .breadcrumb{justify-content:center;margin-bottom:22px;}
.page-hero h1{max-width:900px;margin:18px auto 0;}
.page-hero .lead{max-width:660px;margin:20px auto 0;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:34px;}
.hero-note{margin-top:18px;font-size:13px;color:var(--text-muted);}

/* ---------- stats ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:36px 0;
}
.stat{display:flex;flex-direction:column;gap:6px;padding-left:20px;border-left:1px solid var(--line);}
.stat:first-child{border-left:0;padding-left:0;}
.stat-value{font-size:clamp(28px,3vw,36px);font-weight:800;letter-spacing:-.02em;line-height:1.1;}
.stat-value em{font-style:normal;color:var(--accent);}
.stat-label{font-size:13px;color:var(--text-muted);}

/* ---------- zigzag ---------- */
.zigzag{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.zigzag + .zigzag{margin-top:88px;}
.zigzag.reverse .zz-media{order:2;}
.zigzag.reverse .zz-text{order:1;}
.zz-media{border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--line);background:var(--surface);}
.zz-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 240ms var(--ease);}
.zz-media:hover img{transform:scale(1.03);}
.zz-text h3{margin:16px 0 14px;font-size:clamp(22px,2.4vw,28px);}
.zz-text p{color:var(--text-muted);}
.zz-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.zz-list li{display:flex;gap:12px;font-size:15px;line-height:1.7;}
.zz-list li svg{flex:0 0 auto;margin-top:5px;color:#6E8C1F;}

/* ---------- spec bar ---------- */
.spec-bar{
  margin-top:40px;
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.spec-cell{padding:32px 28px;border-left:1px solid var(--line);}
.spec-cell:first-child{border-left:0;padding-left:0;}
.spec-cell h4{font-size:17px;font-weight:700;margin-bottom:10px;}
.spec-cell p{font-size:14px;line-height:1.75;color:var(--text-muted);}
.spec-key{margin-top:14px;font-size:13px;font-weight:600;color:#6E8C1F;}

/* ---------- feature list rows ---------- */
.list-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;margin-top:8px;}
.list-row{
  display:flex;gap:16px;align-items:flex-start;
  padding:22px 16px 22px 0;border-top:1px solid var(--line);
  transition:background 200ms var(--ease);
}
.list-row:hover{background:var(--paper);}
.list-slot{
  flex:0 0 36px;height:36px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface);
  display:flex;align-items:center;justify-content:center;color:var(--ink-900);
}
.list-row:hover .list-slot{border-color:rgba(200,240,74,.8);}
.list-row h4{font-size:16px;font-weight:700;margin-bottom:4px;}
.list-row p{font-size:14px;line-height:1.7;color:var(--text-muted);}

/* ---------- faq ---------- */
.faq-list{margin-top:12px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px 4px;font-size:16px;font-weight:700;line-height:1.5;
  transition:color 200ms var(--ease),background 200ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:#6E8C1F;}
.faq-icon{position:relative;flex:0 0 22px;height:22px;transition:transform 240ms var(--ease);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink-900);border-radius:2px;}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-item[open] .faq-icon{transform:rotate(90deg);}
.faq-body{padding:0 4px 24px;font-size:15px;line-height:1.8;color:var(--text-muted);max-width:860px;}

/* ---------- cta ---------- */
.cta-section{
  background:linear-gradient(180deg,var(--ink-800) 0%,var(--ink-900) 100%);
  color:#F6F5F1;border-radius:0;
}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start;}
.cta-copy h2{color:#F6F5F1;}
.cta-copy p{margin-top:18px;color:rgba(246,245,241,.72);max-width:420px;}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:12px;font-size:16px;color:rgba(246,245,241,.86);}
.cta-points li::before{content:"";flex:0 0 16px;height:2px;background:var(--accent);margin-top:13px;}
.form-card{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);
  padding:32px;display:grid;grid-template-columns:1fr 1fr;gap:20px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;font-weight:600;color:rgba(246,245,241,.82);}
.field input,.field select{
  height:48px;padding:0 14px;border-radius:var(--radius-md);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);color:#F6F5F1;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.field input::placeholder{color:rgba(246,245,241,.42);}
.field select option{color:#12161A;}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(200,240,74,.18);}
.field .hint{font-size:13px;color:rgba(246,245,241,.5);}
.field.error input{border-color:var(--error);}
.field.error .hint{color:#F2927F;}
.check-row{display:flex;align-items:flex-start;gap:12px;font-size:13px;color:rgba(246,245,241,.72);}
.check-row input{
  appearance:none;width:20px;height:20px;flex:0 0 20px;border-radius:5px;
  border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.06);margin-top:2px;position:relative;
  transition:background 160ms var(--ease),border-color 160ms var(--ease);
}
.check-row input:checked{background:var(--accent);border-color:var(--accent);}
.check-row input:checked::after{
  content:"";position:absolute;left:6px;top:2px;width:5px;height:10px;
  border-right:2px solid var(--accent-ink);border-bottom:2px solid var(--accent-ink);transform:rotate(40deg);
}
.form-card .btn-primary{grid-column:1 / -1;width:100%;}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:88vw;max-width:420px;z-index:120;
  background:var(--ink-900);color:#F6F5F1;padding:28px 24px 32px;
  display:flex;flex-direction:column;gap:8px;
  transform:translateX(102%);transition:transform 260ms var(--ease);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer .brand-main{color:#F6F5F1;}
.drawer .brand-sub{color:rgba(246,245,241,.6);}
.drawer .brand-mark{border-color:#F6F5F1;}
.drawer .brand-mark::before{border-color:#F6F5F1;}
.drawer-link{padding:14px 0;font-size:20px;line-height:1.4;font-weight:600;color:rgba(246,245,241,.88);border-bottom:1px solid rgba(255,255,255,.1);}
.drawer-link:hover{color:var(--accent);}
.drawer-link.is-active{color:var(--accent);}
.drawer-foot{margin-top:auto;}
.drawer-foot .btn{width:100%;}
.scrim{position:fixed;inset:0;background:rgba(11,14,17,.5);opacity:0;visibility:hidden;transition:opacity 240ms var(--ease);z-index:110;}
.scrim.is-open{opacity:1;visibility:visible;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(246,245,241,.74);margin-top:0;}
.site-footer .footer-top{border-top:1px solid var(--ink-700);}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:48px;padding:72px 0 48px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{border-color:#F6F5F1;}
.footer-brand .brand-mark::before{border-color:#F6F5F1;}
.footer-brand .brand-main{color:#F6F5F1;}
.footer-brand .brand-sub{color:rgba(246,245,241,.6);}
.footer-desc{font-size:14px;line-height:1.8;max-width:320px;color:rgba(246,245,241,.62);}
.footer-col h4{font-size:14px;font-weight:700;color:#F6F5F1;margin-bottom:18px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a,.footer-col li{font-size:14px;line-height:1.6;color:rgba(246,245,241,.68);transition:color 200ms var(--ease);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  border-top:1px solid var(--ink-700);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(246,245,241,.5);
}
.footer-bottom a{color:rgba(246,245,241,.62);}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 320ms var(--ease),transform 320ms var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container,.nav-inner{padding:0 32px;}
  .section{--section-y:96px;}
}
@media (max-width:1023px){
  :root{--section-y:80px;}
  .nav-links,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .zigzag{grid-template-columns:1fr;gap:32px;}
  .zigzag + .zigzag{margin-top:64px;}
  .zigzag.reverse .zz-media{order:1;}
  .zigzag.reverse .zz-text{order:2;}
  .cta-grid{grid-template-columns:1fr;gap:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;padding:56px 0 40px;}
  .list-grid{grid-template-columns:1fr;}
}
@media (max-width:899px){
  .stats{grid-template-columns:1fr 1fr;gap:24px 16px;}
  .stat:nth-child(3){border-left:0;padding-left:0;}
  .spec-bar{grid-template-columns:1fr;}
  .spec-cell{border-left:0;padding:26px 0;border-top:1px solid var(--line);}
  .spec-cell:first-child{border-top:0;}
}
@media (max-width:599px){
  .container,.nav-inner{padding:0 20px;}
  :root{--section-y:64px;}
  .page-hero{padding:calc(var(--nav-h) + 28px) 0 52px;}
  .hero-actions .btn{width:100%;}
  .stats{grid-template-columns:1fr;}
  .stat{border-left:0;padding-left:0;}
  .form-card{grid-template-columns:1fr;padding:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --ink-900:#0B0E11;
  --ink-800:#14181D;
  --ink-700:#1F252B;
  --paper:#F6F5F1;
  --surface:#FFFFFF;
  --line:#E5E3DC;
  --text-strong:#12161A;
  --text-muted:#5C646D;
  --accent:#C8F04A;
  --accent-ink:#0B0E11;
  --accent-2:#6C5CE7;
  --success:#2FA36B;
  --error:#E2503C;
  --warning:#D69A2D;

  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:ui-sans-serif,"Inter","Noto Sans SC",system-ui,sans-serif;

  --r-sm:8px;
  --r-md:10px;
  --r-lg:14px;
  --r-xl:18px;

  --shadow-card:0 12px 32px -12px rgba(11,14,17,.22);
  --shadow-float:0 24px 48px -20px rgba(11,14,17,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:64px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--text-strong);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px;border-radius:4px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

.container{max-width:1240px;margin:0 auto;padding:0 32px}
.section{padding:104px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:clamp(26px,3.2vw,40px);line-height:1.2;font-weight:800;letter-spacing:-.01em}
.section-head p{font-size:15px;color:var(--text-muted);max-width:620px;margin-top:10px}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(246,245,241,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:background-color .24s var(--ease);
}
.site-header.is-scrolled{--nav-h:56px;background:rgba(246,245,241,.96)}
.nav-inner{
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
  height:var(--nav-h);
  display:flex;
  align-items:center;
  gap:36px;
  transition:height .24s var(--ease);
}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  position:relative;
  width:28px;height:28px;
  border:1.5px solid var(--ink-900);
  border-radius:6px;
  flex:none;
}
.brand-mark::before{
  content:"";position:absolute;left:6px;top:7px;width:14px;height:1.5px;background:var(--ink-900);
}
.brand-mark::after{
  content:"";position:absolute;left:12px;top:7px;width:1.5px;height:14px;
  background:var(--accent-2);transform:rotate(14deg);transform-origin:top center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:16px;font-weight:800;letter-spacing:.01em}
.brand-sub{font-size:11px;color:var(--text-muted);letter-spacing:.16em}

.nav-links{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;
  font-size:14px;
  font-weight:600;
  letter-spacing:.01em;
  color:var(--text-muted);
  padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left center;transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--text-strong)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text-strong)}
.nav-link.is-active::after{transform:scaleX(1)}

.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search input{
  width:220px;height:42px;
  padding:0 16px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--surface);
  font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:#98A0A8}
.nav-search input:focus{outline:none;border-color:var(--ink-900);box-shadow:0 0 0 3px rgba(11,14,17,.08)}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-md);
  border:1px solid var(--line);background:var(--surface);color:var(--ink-900);
  transition:border-color .2s var(--ease),background-color .2s var(--ease),transform .16s var(--ease);
}
.icon-btn:hover{border-color:var(--ink-900);transform:translateY(-1px)}
.nav-toggle{display:none}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;
  border-radius:var(--r-md);
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:transform .16s var(--ease),background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.btn-primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn-primary:hover{background:#B7E03A;transform:translateY(-2px)}
.btn-primary:active{transform:none;background:#A5CC33}
.btn-ghost{background:transparent;border-color:var(--ink-900);color:var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);transform:translateY(-2px)}
.btn-ghost:active{transform:none;background:var(--ink-800)}
.btn-on-dark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.24);color:#fff}
.btn-on-dark:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-on-dark:active{transform:none}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.nav-cta{min-height:42px;padding:0 20px;font-size:14px}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--ink-900);
  border-bottom:1px solid var(--accent);
  padding-bottom:2px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.link-arrow:hover{border-color:var(--accent-2);color:var(--accent-2)}

/* ============ Badges ============ */
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;
  border-radius:6px;
  font-size:13px;font-weight:600;line-height:1;
}
.badge-cat{background:rgba(200,240,74,.14);color:#6E8C1F}
.badge-plain{background:var(--paper);color:var(--text-muted);border:1px solid var(--line)}
.badge-ok{background:rgba(47,163,107,.12);color:var(--success)}

/* ============ Breadcrumb ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-muted);
  margin-bottom:26px;
}
.breadcrumb .sep{color:#B9BDC2}
.breadcrumb .current{color:var(--text-strong);font-weight:600}

/* ============ Hero (minimal) ============ */
.help-hero{padding:72px 0 40px}
.help-hero h1{
  font-size:clamp(34px,5.4vw,58px);
  line-height:1.12;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:880px;
}
.help-hero .lede{
  margin-top:20px;
  font-size:clamp(16px,1.6vw,19px);
  line-height:1.8;
  color:var(--text-muted);
  max-width:680px;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ============ Search ============ */
.search-panel{margin-top:40px}
.search-box{
  display:flex;align-items:center;gap:10px;
  width:100%;max-width:560px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:6px 6px 6px 18px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:var(--ink-900);box-shadow:0 0 0 3px rgba(11,14,17,.08)}
.search-box svg{flex:none;color:var(--text-muted)}
.search-box input{
  flex:1;min-width:0;height:48px;border:none;background:transparent;
  font-size:15px;
}
.search-box input:focus{outline:none}
.search-box input::placeholder{color:#98A0A8}
.hot-words{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px}
.hot-words span{font-size:13px;color:var(--text-muted)}
.hot-words a{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;
  border-radius:999px;border:1px solid var(--line);background:var(--surface);
  font-size:13px;color:var(--text-muted);
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.hot-words a:hover{border-color:var(--ink-900);color:var(--ink-900);background:var(--paper)}

/* ============ Entry strip ============ */
.entry-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.entry{
  padding:30px 26px 32px;
  border-right:1px solid var(--line);
  display:block;
  transition:background-color .2s var(--ease);
}
.entry:last-child{border-right:none}
.entry:hover{background:var(--paper)}
.entry .entry-idx{font-family:var(--font-num);font-size:13px;color:var(--accent-2);font-weight:700;letter-spacing:.08em}
.entry h3{font-size:17px;font-weight:700;margin-top:12px}
.entry p{font-size:14px;color:var(--text-muted);margin-top:8px;line-height:1.7}

/* ============ FAQ groups ============ */
.faq-wrap{max-width:920px}
.faq-group{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  margin-bottom:16px;
  overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-group:hover{border-color:rgba(11,14,17,.24)}
.faq-group[open]{box-shadow:var(--shadow-card);border-color:rgba(11,14,17,.18)}
.faq-group > summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 26px;
  cursor:pointer;
}
.faq-group > summary::-webkit-details-marker{display:none}
.faq-group .group-title{font-size:18px;font-weight:700;letter-spacing:.01em}
.faq-group .group-sub{font-size:13px;color:var(--text-muted);margin-top:4px}
.plus{position:relative;width:20px;height:20px;flex:none}
.plus::before,.plus::after{content:"";position:absolute;background:var(--ink-900);transition:transform .24s var(--ease),background-color .24s var(--ease)}
.plus::before{left:2px;right:2px;top:50%;height:1.5px;margin-top:-.75px}
.plus::after{top:2px;bottom:2px;left:50%;width:1.5px;margin-left:-.75px}
.faq-group[open] .plus::after{transform:scaleY(0)}
.faq-group[open] .plus::before{background:var(--accent-2)}
.faq-body{padding:0 26px 10px;border-top:1px solid var(--line);animation:softIn .32s var(--ease) both}
@keyframes softIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.qa{padding:22px 0;border-bottom:1px solid var(--line)}
.qa:last-child{border-bottom:none}
.qa h3{font-size:17px;font-weight:700;line-height:1.5;display:flex;gap:10px}
.qa h3 .q-tag{font-family:var(--font-num);color:var(--accent-2);font-weight:700;flex:none}
.qa p{font-size:15px;line-height:1.85;color:var(--text-muted);margin-top:10px;padding-left:26px}
.qa .qa-meta{margin-top:12px;padding-left:26px;display:flex;gap:10px;flex-wrap:wrap}

/* ============ Steps ============ */
.steps-layout{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:48px;
  align-items:center;
}
.steps-media{
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  aspect-ratio:4/3;
}
.steps-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.steps-media:hover img{transform:scale(1.03)}
.step-list{position:relative;padding-left:8px}
.step{
  display:grid;
  grid-template-columns:44px 1fr;
  gap:18px;
  padding:20px 0;
  border-bottom:1px solid var(--line);
}
.step:last-child{border-bottom:none}
.step-num{
  width:44px;height:44px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--surface);
  font-family:var(--font-num);font-weight:700;font-size:15px;color:var(--ink-900);
}
.step h3{font-size:18px;font-weight:700;line-height:1.5}
.step p{font-size:15px;color:var(--text-muted);margin-top:6px;line-height:1.8}

/* ============ Support card ============ */
.support-card{
  margin-top:56px;
  background:linear-gradient(180deg,#14181D 0%,#0B0E11 100%);
  border:1px solid var(--ink-700);
  border-radius:var(--r-lg);
  overflow:hidden;
  display:grid;
  grid-template-columns:7fr 5fr;
  align-items:center;
}
.support-copy{padding:48px 46px}
.support-copy .eyebrow{font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--accent)}
.support-copy h2{font-size:clamp(24px,2.6vw,32px);line-height:1.25;font-weight:800;color:#fff;margin-top:14px}
.support-copy p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.72);margin-top:16px;max-width:520px}
.support-facts{display:flex;flex-wrap:wrap;gap:28px;margin-top:26px}
.support-facts div{min-width:120px}
.support-facts .fact-num{font-family:var(--font-num);font-size:26px;font-weight:800;color:var(--accent)}
.support-facts .fact-label{font-size:13px;color:rgba(255,255,255,.6);margin-top:4px}
.support-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.support-media{height:100%;min-height:320px;border-left:1px solid var(--ink-700)}
.support-media img{width:100%;height:100%;object-fit:cover;opacity:.86}

/* ============ CTA band ============ */
.cta-band{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:44px 46px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.3}
.cta-band p{font-size:15px;color:var(--text-muted);margin-top:10px;max-width:560px}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ Footer ============ */
.site-footer{
  background:linear-gradient(180deg,#14181D 0%,#0B0E11 100%);
  color:rgba(255,255,255,.78);
  padding:72px 0 32px;
  margin-top:0;
  border-top:1px solid var(--ink-700);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--ink-700);
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff}
.footer-brand .brand-mark{border-color:rgba(255,255,255,.8)}
.footer-brand .brand-mark::before{background:rgba(255,255,255,.8)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-top:18px;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.02em}
.footer-col li{margin-bottom:12px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  padding-top:26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.48);
}
.footer-bottom .dot{color:var(--accent)}

/* ============ Drawer (mobile) ============ */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(11,14,17,.5);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
  z-index:90;
}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:88vw;max-width:380px;
  background:var(--ink-900);
  z-index:100;
  transform:translateX(100%);
  transition:transform .28s var(--ease);
  display:flex;flex-direction:column;
  padding:20px 24px 28px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--ink-700)}
.drawer-head .brand-main{color:#fff}
.drawer-head .brand-sub{color:rgba(255,255,255,.5)}
.drawer-head .brand-mark{border-color:rgba(255,255,255,.8)}
.drawer-head .brand-mark::before{background:rgba(255,255,255,.8)}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-md);
  border:1px solid rgba(255,255,255,.2);color:#fff;
  display:flex;align-items:center;justify-content:center;
}
.drawer-nav{padding:24px 0;display:flex;flex-direction:column;gap:4px;flex:1}
.drawer-nav a{
  color:rgba(255,255,255,.86);font-size:20px;font-weight:600;line-height:2;
  padding:6px 0;border-bottom:1px solid rgba(255,255,255,.06);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-nav a:hover{color:var(--accent);padding-left:6px}
.drawer-nav a.is-active{color:var(--accent)}
.drawer-cta .btn{width:100%}
.drawer-search{margin-top:8px}
.drawer-search input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-md);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);color:#fff;font-size:15px;
}
.drawer-search input::placeholder{color:rgba(255,255,255,.45)}

/* ============ Responsive ============ */
@media (max-width:1279px){
  .section{padding:96px 0}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .nav-inner{padding:0 24px;gap:24px}
  .nav-search input{width:160px}
  .section{padding:80px 0}
  .entry-strip{grid-template-columns:repeat(2,1fr)}
  .entry:nth-child(2){border-right:none}
  .entry:nth-child(1),.entry:nth-child(2){border-bottom:1px solid var(--line)}
  .steps-layout{grid-template-columns:1fr;gap:32px}
  .support-card{grid-template-columns:1fr}
  .support-media{min-height:220px;border-left:none;border-top:1px solid var(--ink-700);order:-1}
  .support-copy{padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-links,.nav-search,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .help-hero{padding:56px 0 32px}
  .section{padding:72px 0}
}
@media (max-width:600px){
  .container{padding:0 20px}
  .nav-inner{padding:0 20px;height:56px}
  .site-header{--nav-h:56px}
  .section{padding:64px 0}
  .help-hero h1{font-size:34px}
  .entry-strip{grid-template-columns:1fr}
  .entry{border-right:none;border-bottom:1px solid var(--line)}
  .entry:last-child{border-bottom:none}
  .cta-band{padding:32px 24px;flex-direction:column;align-items:flex-start}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{width:100%}
  .support-copy{padding:32px 22px}
  .support-actions{width:100%}
  .support-actions .btn{width:100%}
  .search-box{max-width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .qa p,.qa .qa-meta{padding-left:0}
  .faq-group > summary{padding:20px 20px}
  .faq-body{padding:0 20px 8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}