/* roulang page: index */
:root{
  --ink:#13131A;
  --ink-2:#2B2B36;
  --accent:#00D8A0;
  --accent-2:#7C5CFF;
  --bg:#F7F7F5;
  --surface:#FFFFFF;
  --line:#E7E7E3;
  --text-sub:#5C5C68;
  --warn:#FFB020;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(19,19,26,.04);
  --shadow-2:0 12px 32px rgba(19,19,26,.08);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media(min-width:1024px){.container-x{padding-left:32px;padding-right:32px;}}

/* ============ 顶部倒计时条 ============ */
.topbar{background:var(--ink);color:#fff;}
.topbar-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px;min-height:56px;padding-top:10px;padding-bottom:10px;
}
@media(min-width:768px){.topbar-inner{min-height:48px;flex-wrap:nowrap;padding-top:0;padding-bottom:0;}}
.topbar-note{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);}
.topbar-note .dot{width:6px;height:6px;border-radius:999px;background:var(--accent);flex:none;box-shadow:0 0 0 3px rgba(0,216,160,.18);}
.topbar-right{display:flex;align-items:center;gap:14px;}
.countdown{display:flex;align-items:stretch;}
.cd-cell{min-width:42px;text-align:center;padding:0 8px;border-left:1px solid rgba(255,255,255,.14);}
.cd-cell:first-child{border-left:none;}
.cd-num{display:block;font-size:15px;font-weight:800;color:var(--accent);line-height:1.2;font-variant-numeric:tabular-nums;}
.cd-unit{display:block;font-size:10px;color:rgba(255,255,255,.5);line-height:1.4;}
.cd-finished{font-size:13px;color:var(--warn);font-weight:600;}
.topbar-btn{
  display:inline-flex;align-items:center;min-height:32px;padding:0 12px;
  font-size:13px;border:1px solid rgba(255,255,255,.32);border-radius:999px;
  color:#fff;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.topbar-btn:hover{background:#fff;color:var(--ink);border-color:#fff;}

/* ============ 站点头部 / 分段标签导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--bg);
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{
  background:rgba(247,247,245,.86);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:16px;min-height:72px;}
@media(min-width:1024px){.header-inner{gap:24px;min-height:80px;}}
.brand{display:flex;align-items:center;gap:10px;flex:none;min-height:44px;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:linear-gradient(140deg,var(--ink) 0%,var(--ink-2) 60%,var(--accent-2) 140%);
  color:#fff;font-weight:900;font-size:18px;display:flex;align-items:center;justify-content:center;
  letter-spacing:-.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-sub);letter-spacing:.04em;}
.nav-chips{display:none;align-items:center;gap:4px;flex:1;min-width:0;}
@media(min-width:1024px){.nav-chips{display:flex;}}
.nav-chip{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:0 14px;font-size:14px;color:var(--text-sub);border-radius:999px;
  transition:color .15s ease,background .15s ease;white-space:nowrap;
}
.nav-chip::after{
  content:"";position:absolute;left:50%;right:50%;bottom:8px;height:2px;
  background:var(--accent);border-radius:2px;transition:left .24s ease,right .24s ease;
}
.nav-chip:hover{color:var(--ink);background:rgba(19,19,26,.045);}
.nav-chip.is-active{color:var(--ink);font-weight:700;}
.nav-chip.is-active::after{left:14px;right:14px;}
.header-right{display:flex;align-items:center;gap:10px;margin-left:auto;flex:none;}
.hamburger{
  width:44px;height:44px;border-radius:11px;border:1px solid var(--line);background:var(--surface);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .18s ease,background .18s ease;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.hamburger:hover{border-color:var(--ink);}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
@media(min-width:1024px){.hamburger{display:none;}}
.mobile-nav{
  display:none;border-top:1px solid var(--line);background:var(--bg);
  padding:10px 0 18px;
}
.mobile-nav.is-open{display:block;}
@media(min-width:1024px){.mobile-nav{display:none !important;}}
.mobile-nav .nav-chip{width:100%;justify-content:flex-start;border-radius:12px;}
.mobile-nav .nav-chip::after{display:none;}
.mobile-nav .nav-chip.is-active{background:rgba(0,216,160,.12);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn i{font-size:13px;transition:transform .18s ease;}
.btn:hover i{transform:translateX(4px);}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--accent);color:var(--ink);}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{background:#00c08e;color:var(--ink);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);min-height:44px;}
.text-link i{font-size:12px;transition:transform .18s ease;}
.text-link:hover{text-decoration:underline;text-underline-offset:4px;}
.text-link:hover i{transform:translateX(4px);}

/* ============ 徽章 / chip ============ */
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);
  font-size:13px;color:var(--text-sub);line-height:1.6;
  transition:border-color .18s ease,background .18s ease,color .18s ease;
}
.chip:hover{border-color:var(--ink);color:var(--ink);background:#fff;}
.chip-accent{border-color:rgba(0,216,160,.4);background:rgba(0,216,160,.1);color:#067a5c;}
.chip-warn{border-color:rgba(255,176,32,.45);background:rgba(255,176,32,.12);color:#8a5a00;}
.chip-dark{border-color:rgba(255,255,255,.2);background:rgba(255,255,255,.06);color:rgba(255,255,255,.82);}
.chip-dark:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.12);}

/* ============ Hero ============ */
.hero{position:relative;padding:56px 0 64px;overflow:hidden;}
@media(min-width:1024px){.hero{padding:88px 0 104px;}}
.hero::before{
  content:"";position:absolute;top:-140px;right:-160px;width:520px;height:520px;
  border-radius:50%;background:radial-gradient(circle at 30% 30%,rgba(0,216,160,.16),transparent 62%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:44px;align-items:center;}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  letter-spacing:.14em;color:var(--text-sub);text-transform:uppercase;
  border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 14px;
}
.eyebrow span{width:6px;height:6px;border-radius:999px;background:var(--accent);}
.hero h1{
  margin-top:20px;font-size:clamp(34px,5vw,64px);font-weight:900;color:var(--ink);
  letter-spacing:-.02em;line-height:1.12;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:var(--text-sub);max-width:56ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-meta{margin-top:22px;font-size:13px;color:var(--text-sub);display:flex;flex-wrap:wrap;gap:18px;align-items:center;}
.hero-meta b{color:var(--ink);font-weight:800;font-variant-numeric:tabular-nums;}
.hero-visual{position:relative;padding-bottom:56px;padding-left:36px;}
.hero-fig-main{
  margin:0;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--shadow-2);
}
.hero-fig-main img{width:100%;aspect-ratio:4/3.4;object-fit:cover;}
.hero-fig-sub{
  position:absolute;left:0;bottom:0;width:58%;margin:0;border-radius:var(--radius-card);
  overflow:hidden;border:4px solid var(--bg);background:var(--surface);box-shadow:var(--shadow-2);
}
.hero-fig-sub img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-badge{
  position:absolute;top:-14px;right:8px;background:var(--ink);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.04em;border-radius:999px;padding:8px 14px;
}

/* ============ 板块通用 ============ */
.section{padding:64px 0;}
@media(min-width:1024px){.section{padding:104px 0;}}
.section-tight{padding:48px 0;}
@media(min-width:1024px){.section-tight{padding:72px 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
@media(min-width:1024px){.section-head{margin-bottom:52px;}}
.h2{
  position:relative;padding-left:16px;font-size:clamp(26px,3.4vw,40px);font-weight:800;
  color:var(--ink);line-height:1.2;letter-spacing:-.01em;
}
.h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;background:var(--accent);}
.section-desc{margin-top:14px;font-size:15px;color:var(--text-sub);max-width:62ch;}
.divider{height:1px;background:var(--line);border:none;margin:0;}

/* ============ 卖点编号条 ============ */
.points{border-top:1px solid var(--line);}
.point{
  position:relative;display:grid;grid-template-columns:56px 1fr;gap:16px;
  padding:24px 16px 24px 12px;border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
@media(min-width:768px){.point{grid-template-columns:88px 1fr;gap:28px;padding:30px 20px 30px 16px;}}
.point::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .24s ease;
}
.point:hover{background:rgba(255,255,255,.85);}
.point:hover::before{transform:scaleY(1);}
.point-num{
  font-size:32px;font-weight:900;line-height:1;color:transparent;
  -webkit-text-stroke:1.4px var(--line);letter-spacing:-.03em;
}
@media(min-width:768px){.point-num{font-size:44px;}}
.point h3{font-size:19px;font-weight:700;color:var(--ink);}
.point p{margin-top:8px;font-size:15px;color:var(--text-sub);}

/* ============ 亮点图墙 ============ */
.wall{display:grid;grid-template-columns:1fr;gap:16px;}
@media(min-width:640px){.wall{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.wall{grid-template-columns:repeat(6,1fr);gap:20px;}}
.wall-item{position:relative;margin:0;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:var(--surface);}
.wall-item img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.wall-item figcaption{
  position:absolute;inset:auto 0 0 0;padding:14px 16px;color:#fff;font-size:14px;font-weight:600;
  background:linear-gradient(to top,rgba(19,19,26,.78),rgba(19,19,26,0));
}
.wall-item .wall-tag{
  position:absolute;top:12px;left:12px;font-size:12px;font-weight:600;color:#fff;
  background:rgba(19,19,26,.6);border:1px solid rgba(255,255,255,.24);border-radius:999px;padding:4px 10px;
}
.wall-item:hover img{transform:scale(1.03);}
.wall-h-md{height:240px;}
@media(min-width:1024px){
  .wall-a{grid-column:span 4;height:340px;}
  .wall-b{grid-column:span 2;height:340px;}
  .wall-c{grid-column:span 2;height:300px;}
  .wall-d{grid-column:span 4;height:300px;}
}

/* ============ 最新信息 ============ */
.news-layout{display:grid;grid-template-columns:1fr;gap:28px;}
@media(min-width:1024px){.news-layout{grid-template-columns:260px 1fr;gap:48px;}}
.news-aside{position:relative;}
@media(min-width:1024px){.news-aside-inner{position:sticky;top:104px;}}
.news-aside h3{font-size:20px;font-weight:800;color:var(--ink);}
.news-aside p{margin-top:12px;font-size:14px;color:var(--text-sub);}
.news-track{margin-top:24px;display:flex;flex-direction:column;gap:10px;}
.news-track li{font-size:13px;color:var(--text-sub);display:flex;gap:10px;align-items:flex-start;}
.news-track i{color:var(--accent);font-size:11px;margin-top:7px;}
.news-list{border-top:1px solid var(--line);}
.news-row{display:block;border-bottom:1px solid var(--line);transition:background .18s ease;}
.news-row:hover{background:rgba(255,255,255,.9);}
.news-row-inner{display:grid;grid-template-columns:1fr;gap:12px;padding:22px 12px;}
@media(min-width:768px){.news-row-inner{grid-template-columns:96px 1fr;gap:24px;padding:24px 16px;}}
.news-date{
  display:inline-flex;flex-direction:column;justify-content:center;align-items:center;
  min-width:82px;min-height:64px;border-radius:12px;border:1px solid var(--line);background:var(--surface);
  font-size:13px;font-weight:700;color:var(--text-sub);line-height:1.4;padding:8px 6px;
  font-variant-numeric:tabular-nums;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.news-row:hover .news-date{background:var(--accent);color:var(--ink);border-color:var(--accent);}
.news-title{font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;}
.news-row:hover .news-title{text-decoration:underline;text-underline-offset:4px;}
.news-row--lead .news-title{font-size:20px;font-weight:700;line-height:1.5;}
@media(min-width:1024px){.news-row--lead .news-title{font-size:23px;}}
.news-sum{margin-top:8px;font-size:14px;color:var(--text-sub);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:12px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--text-sub);}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--surface);
  padding:44px 24px;text-align:center;color:var(--text-sub);
}
.news-empty i{font-size:22px;color:var(--accent);display:block;margin-bottom:12px;}
.news-empty a{margin-top:14px;}

/* ============ 数据条 ============ */
.stats{background:var(--ink);color:#fff;border-radius:var(--radius-card);padding:36px 24px;}
@media(min-width:1024px){.stats{padding:52px 48px;}}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
@media(min-width:768px){.stats-grid{grid-template-columns:repeat(4,1fr);gap:24px;}}
.stat{border-left:1px solid rgba(255,255,255,.14);padding-left:18px;}
.stat:first-child{border-left:none;padding-left:0;}
@media(max-width:767px){.stat{padding-left:0;border-left:none;}}
.stat b{display:block;font-size:30px;font-weight:900;color:var(--accent);line-height:1.1;font-variant-numeric:tabular-nums;}
@media(min-width:1024px){.stat b{font-size:38px;}}
.stat span{display:block;margin-top:8px;font-size:13px;color:rgba(255,255,255,.66);}

/* ============ 图文对照 / 支持区块 ============ */
.grid-3{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:768px){.grid-3{grid-template-columns:repeat(3,1fr);}}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#dcdcd6;}
.card-media{overflow:hidden;background:var(--bg);}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px;}
.card-body h3{font-size:19px;font-weight:700;color:var(--ink);}
.card-body p{margin-top:10px;font-size:14px;color:var(--text-sub);}
.card-tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}

/* ============ CTA / 表单 ============ */
.cta{background:var(--ink);border-radius:var(--radius-card);padding:36px 24px;color:#fff;}
@media(min-width:1024px){.cta{padding:56px 48px;}}
.cta-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center;}
@media(min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:56px;}}
.cta h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.25;color:#fff;}
.cta p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.7);}
.form-row{display:grid;grid-template-columns:1fr;gap:12px;}
@media(min-width:520px){.form-row{grid-template-columns:1fr auto;}}
.field{
  width:100%;min-height:48px;padding:0 16px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  color:#fff;font-size:15px;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field::placeholder{color:rgba(255,255,255,.45);}
.field:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px var(--accent);background:rgba(255,255,255,.12);}
.form-note{margin-top:14px;display:flex;align-items:flex-start;gap:10px;font-size:12px;color:rgba(255,255,255,.55);}
.form-note input{margin-top:4px;accent-color:var(--accent);width:16px;height:16px;flex:none;}
.form-tip{margin-top:12px;font-size:13px;min-height:20px;}
.form-tip.is-error{color:var(--warn);}
.form-tip.is-ok{color:var(--accent);border:1px solid rgba(0,216,160,.5);border-radius:10px;padding:10px 14px;background:rgba(0,216,160,.08);}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:grid;grid-template-columns:44px 1fr 32px;align-items:center;gap:12px;
  padding:20px 12px;text-align:left;transition:background .18s ease;
}
.faq-q:hover{background:rgba(255,255,255,.9);}
.faq-q .no{font-size:15px;font-weight:800;color:var(--warn);font-variant-numeric:tabular-nums;}
.faq-q .txt{font-size:16px;font-weight:600;color:var(--ink);}
.faq-q .ic{
  width:28px;height:28px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  display:flex;align-items:center;justify-content:center;color:var(--ink);font-size:11px;
  transition:transform .26s ease,border-color .2s ease,background .2s ease;
}
.faq-item.is-open .faq-q .ic{transform:rotate(180deg);background:var(--accent);border-color:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a-inner{padding:0 12px 24px 56px;font-size:15px;color:var(--text-sub);}
.faq-a-inner p+p{margin-top:10px;}
@media(max-width:520px){.faq-a-inner{padding-left:12px;}}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:var(--surface);margin-top:0;}
.footer-main{padding:56px 0 36px;}
@media(min-width:1024px){.footer-main{padding:72px 0 48px;}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand .brand-text strong{font-size:17px;}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--text-sub);max-width:34ch;}
.footer-col h4{font-size:14px;font-weight:800;color:var(--ink);letter-spacing:.02em;}
.footer-col ul{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-sub);transition:color .16s ease;display:inline-block;min-height:24px;}
.footer-col a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;}
.footer-bottom-inner{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--text-sub);}
.footer-bottom-inner a{color:var(--text-sub);}
.footer-bottom-inner a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px;}

/* ============ 滚动渐入 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease;}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --ink:#13131A;
  --ink-2:#2B2B36;
  --accent:#00D8A0;
  --accent-2:#7C5CFF;
  --bg:#F7F7F5;
  --surface:#FFFFFF;
  --line:#E7E7E3;
  --text-sub:#5C5C68;
  --warn:#FFB020;
  --r-card:16px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(19,19,26,.04);
  --sh-2:0 12px 32px rgba(19,19,26,.08);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container-x{padding:0 32px;}}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px;}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,247,245,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,background .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(247,247,245,.86);}
.header-inner{display:flex;align-items:center;gap:20px;min-height:70px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:17px;line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:15px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.brand-text em{font-size:11px;font-style:normal;color:var(--text-sub);letter-spacing:.04em;}
.nav-chips{display:none;align-items:center;gap:2px;flex:1 1 auto;margin-left:6px;}
@media (min-width:1024px){.nav-chips{display:flex;}}
.nav-chip{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:8px 12px;font-size:14px;color:var(--text-sub);border-radius:999px;
  white-space:nowrap;transition:color .18s ease,background .18s ease;
}
.nav-chip:hover{color:var(--ink);background:rgba(19,19,26,.05);}
.nav-chip.is-active{color:var(--ink);font-weight:700;}
.nav-chip.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;
  border-radius:2px;background:var(--accent);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:var(--surface);cursor:pointer;transition:border-color .18s ease;
}
.nav-toggle:hover{border-color:var(--ink);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
@media (min-width:1024px){.nav-toggle{display:none;}}
.nav-drawer{border-top:1px solid var(--line);background:rgba(247,247,245,.98);}
@media (min-width:1024px){.nav-drawer{display:none !important;}}
.drawer-chips{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding-top:14px;padding-bottom:18px;}
.drawer-chip{
  display:flex;align-items:center;min-height:44px;padding:12px 14px;
  border:1px solid var(--line);border-radius:12px;background:var(--surface);
  font-size:14px;color:var(--ink);transition:border-color .18s ease,background .18s ease;
}
.drawer-chip:hover{border-color:var(--ink);background:#fff;}
.drawer-chip.is-active{border-color:var(--ink);font-weight:700;}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;
  cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn-sm{min-height:40px;padding:9px 16px;font-size:14px;}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--accent);color:var(--ink);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{background:#00c48f;color:var(--ink);}
.btn-light{background:#fff;color:var(--ink);border-color:var(--line);}
.btn-light:hover{border-color:var(--ink);}
.text-btn{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);min-height:44px;}
.text-btn svg{transition:transform .18s ease;}
.text-btn:hover svg{transform:translateX(4px);}
.text-btn:hover{text-decoration:underline;text-underline-offset:3px;}

/* ===== chips & badges ===== */
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);font-size:13px;color:var(--text-sub);
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.chip:hover{border-color:var(--ink);color:var(--ink);}
.chip-ink{background:var(--ink);color:#fff;border-color:var(--ink);}
.chip-accent{background:rgba(0,216,160,.12);border-color:rgba(0,216,160,.4);color:#057A5C;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
.count-pill{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-sub);
  padding:6px 14px;border-radius:999px;border:1px dashed var(--line);background:#fff;
}

/* ===== breadcrumb ===== */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-sub);}
.breadcrumb a{color:var(--text-sub);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:var(--ink);max-width:min(46vw,420px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ===== page head ===== */
.page-head{
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(247,247,245,0) 0%,rgba(247,247,245,.9) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.page-head-inner{padding:28px 0 36px;}
@media (min-width:1024px){.page-head-inner{padding:34px 0 46px;}}

/* ===== article layout ===== */
.article-wrap{padding:36px 0 72px;}
@media (min-width:1024px){.article-wrap{padding:48px 0 96px;}}
.article-grid{display:grid;grid-template-columns:1fr;gap:40px;}
@media (min-width:1024px){
  .article-grid{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:56px;align-items:start;}
}
.article-main{min-width:0;}
.article-head{padding:22px 0 26px;border-bottom:1px solid var(--line);}
.article-head h1{
  margin:16px 0 18px;
  font-size:clamp(28px,3.4vw,42px);
  font-weight:900;letter-spacing:-.02em;line-height:1.22;color:var(--ink);
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:13px;color:var(--text-sub);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line);display:inline-block;}

.article-body{font-size:17px;line-height:1.9;color:#2B2B36;padding-top:6px;}
.article-body > * + *{margin-top:18px;}
.article-body h2{
  margin-top:40px;font-size:24px;font-weight:700;line-height:1.4;color:var(--ink);letter-spacing:-.01em;
}
.article-body h3{margin-top:28px;font-size:20px;font-weight:600;line-height:1.45;color:var(--ink);}
.article-body h4{margin-top:22px;font-size:17px;font-weight:700;color:var(--ink);}
.article-body p{margin:0;}
.article-body a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:3px;}
.article-body a:hover{color:#057A5C;text-decoration-color:#057A5C;}
.article-body strong{color:var(--ink);font-weight:700;}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--accent);
  background:#F1F6F3;border-radius:0 12px 12px 0;color:var(--ink-2);
}
.article-body blockquote p + p{margin-top:10px;}
.article-body ul,.article-body ol{padding-left:22px;margin:0;}
.article-body ul li{position:relative;margin:8px 0;padding-left:2px;list-style:disc;}
.article-body ol li{margin:8px 0;list-style:decimal;}
.article-body li::marker{color:#9A9AA4;}
.article-body img{
  max-width:100%;height:auto;border-radius:16px;border:1px solid var(--line);
  margin:26px auto;box-shadow:var(--sh-1);
}
.article-body figure{margin:26px 0;}
.article-body figure img{margin:0 auto;}
.article-body figcaption{font-size:13px;color:var(--text-sub);text-align:center;margin-top:10px;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0;}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;
  border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;
}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;}
.article-body th{background:#F3F3F0;font-weight:700;color:var(--ink);}
.article-body tr:last-child td{border-bottom:0;}
.article-body pre{
  margin:24px 0;padding:18px;border-radius:14px;background:#13131A;color:#E9E9EE;
  overflow-x:auto;font-size:14px;line-height:1.7;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;}
.article-body :not(pre) > code{background:#EFEFEC;border:1px solid var(--line);border-radius:6px;padding:2px 6px;color:var(--ink);}
.article-body .table-scroll{overflow-x:auto;}

.article-tags{
  margin-top:44px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.article-tags .label{font-size:13px;color:var(--text-sub);margin-right:2px;}

.postnav{
  display:grid;grid-template-columns:1fr;gap:14px;margin-top:28px;
}
@media (min-width:760px){.postnav{grid-template-columns:1fr 1fr;}}
.postnav-card{
  display:block;padding:18px 20px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface);box-shadow:var(--sh-1);transition:box-shadow .18s ease,border-color .18s ease,transform .18s ease;
}
.postnav-card:hover{border-color:var(--ink);box-shadow:var(--sh-2);transform:translateY(-2px);}
.postnav-card .kicker{font-size:12px;letter-spacing:.08em;color:var(--text-sub);}
.postnav-card h3{margin:8px 0 6px;font-size:16px;font-weight:700;color:var(--ink);line-height:1.5;}
.postnav-card .meta{font-size:13px;color:var(--text-sub);}

.back-row{margin-top:36px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ===== sidebar ===== */
.article-side{min-width:0;}
@media (min-width:1024px){.side-sticky{position:sticky;top:96px;}}
.side-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);
  padding:20px;box-shadow:var(--sh-1);
}
.side-card + .side-card{margin-top:18px;}
.side-title{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;
}
.side-title::before{content:"";width:3px;height:16px;border-radius:2px;background:var(--accent);}
.side-title span{flex:1 1 auto;}
.side-list{display:flex;flex-direction:column;gap:2px;}
.side-list li + li{border-top:1px solid var(--line);}
.side-link{
  display:block;padding:13px 0;transition:padding-left .18s ease;
}
.side-link:hover{padding-left:6px;}
.side-link .t{font-size:14px;font-weight:600;color:var(--ink);line-height:1.6;display:block;}
.side-link .m{font-size:12px;color:var(--text-sub);display:flex;gap:10px;margin-top:5px;}
.side-link:hover .t{text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:3px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;padding:9px 0 9px 14px;border-left:2px solid var(--line);
  font-size:14px;color:var(--text-sub);line-height:1.6;transition:border-color .18s ease,color .18s ease,padding-left .18s ease;
}
.toc-list a:hover{border-left-color:var(--accent);color:var(--ink);padding-left:18px;}
.toc-empty{font-size:13px;color:var(--text-sub);}

/* ===== empty state ===== */
.empty-state{
  margin:40px auto;max-width:620px;padding:48px 28px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--surface);
}
.empty-state .icon{
  width:52px;height:52px;border-radius:16px;background:rgba(0,216,160,.12);
  color:#057A5C;display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
  font-size:22px;font-weight:800;
}
.empty-state h2{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.empty-state p{font-size:14px;color:var(--text-sub);margin-bottom:22px;}

/* ===== related strip ===== */
.section{border-top:1px solid var(--line);}
.section-inner{padding:56px 0;}
@media (min-width:1024px){.section-inner{padding:80px 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:30px;}
.section-head h2{
  position:relative;padding-left:14px;font-size:clamp(22px,2.6vw,30px);
  font-weight:800;line-height:1.25;color:var(--ink);letter-spacing:-.01em;
}
.section-head h2::before{content:"";position:absolute;left:0;top:.18em;width:3px;height:1em;border-radius:2px;background:var(--accent);}
.section-head p{font-size:14px;color:var(--text-sub);margin-top:8px;}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.rcard{
  display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface);overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.rcard:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#DADAD4;}
.rcard .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EFEFEC;}
.rcard .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rcard:hover .thumb img{transform:scale(1.03);}
.rcard .thumb .tag{
  position:absolute;left:12px;top:12px;padding:4px 10px;border-radius:999px;
  background:rgba(19,19,26,.72);color:#fff;font-size:12px;backdrop-filter:blur(4px);
}
.rcard .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.rcard h3{font-size:17px;font-weight:700;line-height:1.55;color:var(--ink);}
.rcard:hover h3{text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:4px;}
.rcard p{font-size:14px;color:var(--text-sub);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rcard .meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-sub);}

/* ===== cta band ===== */
.cta-band{background:var(--ink);color:#fff;}
.cta-inner{
  display:grid;grid-template-columns:1fr;gap:26px;padding:52px 0;align-items:center;
}
@media (min-width:900px){.cta-inner{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:56px;padding:64px 0;}}
.cta-inner h2{
  font-size:clamp(24px,3vw,34px);font-weight:900;line-height:1.25;color:#fff;letter-spacing:-.01em;
}
.cta-inner .sub{margin-top:12px;font-size:15px;line-height:1.9;color:rgba(255,255,255,.7);max-width:52ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-points{display:grid;grid-template-columns:1fr;gap:10px;}
@media (min-width:560px){.cta-points{grid-template-columns:1fr 1fr;}}
.cta-point{
  display:flex;align-items:flex-start;gap:10px;padding:14px 16px;border-radius:14px;
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.04);
}
.cta-point .idx{color:var(--accent);font-weight:800;font-size:13px;line-height:1.9;}
.cta-point span.t{font-size:14px;color:rgba(255,255,255,.86);line-height:1.7;}

/* ===== footer ===== */
.site-footer{border-top:1px solid var(--line);background:#F2F2EF;margin-top:0;}
.footer-main{padding:56px 0 36px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;}}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--text-sub);max-width:34ch;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li a{font-size:14px;color:var(--text-sub);transition:color .18s ease;}
.footer-col li a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--accent);}
.footer-bottom{border-top:1px solid var(--line);}
.footer-bottom-inner{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  padding:18px 0;font-size:13px;color:var(--text-sub);
}

/* ===== reveal ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease;}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1 !important;transform:none !important;transition:none !important;}
  *{transition-duration:.001ms !important;animation-duration:.001ms !important;}
}

/* roulang page: category1 */
:root{
  --ink:#13131A;
  --ink-2:#2B2B36;
  --accent:#00D8A0;
  --accent-2:#7C5CFF;
  --bg:#F7F7F5;
  --surface:#FFFFFF;
  --line:#E7E7E3;
  --text-sub:#5C5C68;
  --warn:#FFB020;
  --r-card:16px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(19,19,26,.04);
  --shadow-2:0 12px 32px rgba(19,19,26,.08);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
input,button,select,textarea{font-size:inherit;font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container-x{padding:0 32px;}}

/* ---------- 顶部活动提示条 ---------- */
.topbar{background:var(--ink);color:#fff;}
.topbar-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 18px;min-height:48px;padding-top:8px;padding-bottom:8px;}
.topbar-text{font-size:13px;color:rgba(255,255,255,.82);line-height:1.6;}
.topbar-text b{color:var(--accent);font-weight:700;}
.topbar-right{display:flex;align-items:center;gap:16px;}
.topbar-meta{font-size:12px;color:rgba(255,255,255,.62);letter-spacing:.04em;}
.topbar-meta strong{color:#fff;font-weight:700;}
.topbar-btn{display:inline-flex;align-items:center;justify-content:center;min-height:32px;padding:5px 16px;border:1px solid rgba(255,255,255,.28);border-radius:999px;font-size:12px;color:#fff;transition:background .18s ease,color .18s ease,border-color .18s ease;}
.topbar-btn:hover{background:#fff;color:var(--ink);border-color:#fff;}

/* ---------- 头部与分段标签导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(247,247,245,.86);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid transparent;transition:border-color .2s ease,box-shadow .2s ease;}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(19,19,26,.02);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;}
.brand{display:flex;align-items:center;gap:11px;min-height:44px;}
.brand-mark{flex:0 0 auto;width:38px;height:38px;border-radius:11px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:900;font-size:18px;letter-spacing:-.02em;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-sub);letter-spacing:.1em;}
.nav-chips{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;}
.nav-chips::-webkit-scrollbar{display:none;}
.nav-chip{position:relative;display:inline-flex;align-items:center;min-height:40px;padding:8px 14px;border-radius:999px;font-size:14px;color:var(--text-sub);white-space:nowrap;transition:background .18s ease,color .18s ease;}
.nav-chip:hover{background:rgba(19,19,26,.05);color:var(--ink);}
.nav-chip.is-active{color:var(--ink);font-weight:700;background:var(--surface);box-shadow:inset 0 0 0 1px var(--line);}
.nav-chip.is-active::after{content:"";position:absolute;left:50%;bottom:3px;width:22px;height:2px;border-radius:2px;background:var(--accent);transform:translateX(-50%);}
.header-cta{display:flex;align-items:center;gap:10px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:11px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--accent);color:var(--ink);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{background:#00c391;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);}
.link-arrow i{font-style:normal;transition:transform .18s ease;}
.link-arrow:hover i{transform:translateX(4px);}
.link-arrow:hover{text-decoration:underline;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:var(--surface);align-items:center;justify-content:center;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:var(--surface);padding:16px 0 22px;}
.mobile-drawer.is-open{display:block;}
.mobile-nav{display:grid;gap:4px;margin-bottom:16px;}
.mobile-link{display:flex;align-items:center;min-height:46px;padding:0 14px;border-radius:10px;font-size:15px;color:var(--ink-2);}
.mobile-link:hover{background:rgba(19,19,26,.05);}
.mobile-link.is-active{background:rgba(0,216,160,.12);color:var(--ink);font-weight:700;}
@media (max-width:1023px){
  .nav-chips{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-cta .btn-primary{display:none;}
}

/* ---------- 分类页页头 ---------- */
.classify-head{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:var(--surface);}
.classify-head::before{
  content:"入口";
  position:absolute;right:-10px;top:-30px;
  font-size:clamp(120px,20vw,240px);font-weight:900;letter-spacing:-.06em;
  color:var(--ink);opacity:.04;line-height:1;pointer-events:none;user-select:none;
}
.classify-inner{position:relative;padding:52px 0 44px;max-width:820px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:var(--bg);font-size:12px;letter-spacing:.08em;color:var(--text-sub);}
.eyebrow b{color:var(--accent-2);font-weight:700;}
.classify-head h1{margin-top:20px;font-size:clamp(34px,5.2vw,60px);font-weight:900;letter-spacing:-.02em;line-height:1.12;}
.classify-head h1 span{display:block;color:var(--text-sub);font-size:clamp(16px,1.6vw,19px);font-weight:600;letter-spacing:0;margin-top:14px;line-height:1.7;}
.classify-lead{margin-top:18px;font-size:16px;line-height:1.85;color:var(--text-sub);max-width:660px;}
.sub-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px;}
.sub-chip{display:inline-flex;align-items:center;min-height:38px;padding:7px 15px;border-radius:999px;border:1px solid var(--line);background:var(--bg);font-size:13px;color:var(--ink-2);transition:background .18s ease,border-color .18s ease,color .18s ease;}
.sub-chip:hover{background:var(--ink);border-color:var(--ink);color:#fff;}
.classify-stat{display:flex;flex-wrap:wrap;gap:28px;margin-top:30px;padding-top:22px;border-top:1px solid var(--line);}
.stat-item strong{display:block;font-size:22px;font-weight:900;color:var(--ink);}
.stat-item span{font-size:12px;color:var(--text-sub);letter-spacing:.06em;}

/* ---------- 主体栅格 ---------- */
.main-wrap{padding:64px 0 72px;}
@media (min-width:1024px){.main-wrap{padding:88px 0 104px;}}
.main-grid{display:grid;gap:40px;grid-template-columns:1fr;}
@media (min-width:1024px){
  .main-grid{grid-template-columns:250px minmax(0,1fr);gap:56px;}
}
.toc-rail{border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);padding:22px 20px;box-shadow:var(--shadow-1);}
@media (min-width:1024px){
  .toc-rail{position:sticky;top:96px;align-self:start;}
}
.toc-title{font-size:12px;letter-spacing:.14em;color:var(--text-sub);margin-bottom:16px;}
.toc-list{display:grid;gap:2px;}
.toc-link{display:flex;align-items:center;gap:10px;min-height:44px;padding:6px 10px;border-radius:8px;font-size:14px;color:var(--text-sub);border-left:2px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease;}
.toc-link:hover{background:rgba(19,19,26,.05);color:var(--ink);}
.toc-link.is-current{color:var(--ink);font-weight:700;border-left-color:var(--accent);background:rgba(0,216,160,.08);}
.toc-num{font-size:12px;font-weight:800;color:var(--warn);font-variant-numeric:tabular-nums;}
.toc-note{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;line-height:1.75;color:var(--text-sub);}

/* ---------- 图文条目 ---------- */
.step-block{padding:0 0 40px;margin-bottom:40px;border-bottom:1px solid var(--line);}
.step-block:last-of-type{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.step-head{display:flex;align-items:baseline;gap:14px;margin-bottom:12px;}
.step-index{font-size:13px;font-weight:900;letter-spacing:.14em;color:var(--accent-2);font-variant-numeric:tabular-nums;}
.step-block h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.01em;line-height:1.3;}
.step-lead{font-size:15px;line-height:1.85;color:var(--text-sub);margin-bottom:22px;}
.step-body{display:grid;gap:24px;}
@media (min-width:768px){
  .step-body{grid-template-columns:minmax(0,1fr) 300px;align-items:start;}
}
.fig{position:relative;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--bg);aspect-ratio:16/11;}
.fig img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.fig:hover img{transform:scale(1.03);}
.fig-tag{position:absolute;left:12px;top:12px;display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;background:rgba(19,19,26,.72);color:#fff;font-size:12px;letter-spacing:.04em;}
.key-list{display:grid;gap:12px;}
.key-list li{position:relative;padding-left:24px;font-size:15px;line-height:1.8;color:var(--ink-2);}
.key-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--accent);}
.key-list li b{color:var(--ink);font-weight:700;}

/* ---------- 核对清单 ---------- */
.section-title-wrap{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px;}
.section-title{position:relative;padding-left:16px;font-size:clamp(24px,3.2vw,36px);font-weight:800;letter-spacing:-.01em;line-height:1.2;}
.section-title::before{content:"";position:absolute;left:0;top:.18em;width:3px;height:24px;border-radius:2px;background:var(--accent);}
.section-desc{font-size:15px;color:var(--text-sub);margin-top:10px;padding-left:16px;}
.check-grid{display:grid;gap:14px;grid-template-columns:1fr;}
@media (min-width:640px){.check-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.check-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.check-card{border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);padding:20px;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease;}
.check-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.check-card .ck-num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:rgba(0,216,160,.14);color:var(--ink);font-weight:900;font-size:14px;font-variant-numeric:tabular-nums;}
.check-card h3{margin-top:14px;font-size:17px;font-weight:700;}
.check-card p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--text-sub);}

/* ---------- 深色说明区 ---------- */
.dark-band{border-radius:24px;background:var(--ink);color:rgba(255,255,255,.78);padding:36px 24px;}
@media (min-width:768px){.dark-band{padding:48px 44px;}}
.dark-band h2{color:#fff;font-size:clamp(22px,2.8vw,30px);font-weight:800;letter-spacing:-.01em;}
.dark-band p{margin-top:14px;font-size:15px;line-height:1.85;}
.dark-grid{display:grid;gap:16px;margin-top:28px;grid-template-columns:1fr;}
@media (min-width:768px){.dark-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.dark-item{border:1px solid rgba(255,255,255,.12);border-radius:var(--r-card);padding:20px;background:rgba(255,255,255,.03);}
.dark-item strong{display:block;color:#fff;font-size:16px;font-weight:700;}
.dark-item span{display:block;margin-top:8px;font-size:14px;line-height:1.75;color:rgba(255,255,255,.66);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{display:flex;align-items:center;gap:16px;width:100%;min-height:64px;padding:18px 0;background:none;border:0;text-align:left;cursor:pointer;color:var(--ink);font-size:16px;font-weight:600;transition:background .18s ease;}
.faq-q:hover{background:rgba(19,19,26,.03);}
.faq-num{flex:0 0 auto;font-size:13px;font-weight:900;color:var(--warn);font-variant-numeric:tabular-nums;letter-spacing:.06em;}
.faq-text{flex:1 1 auto;}
.faq-icon{position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);}
.faq-icon i{position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;}
.faq-icon i:first-child{width:12px;height:2px;transform:translate(-50%,-50%);}
.faq-icon i:last-child{width:2px;height:12px;transform:translate(-50%,-50%);transition:transform .26s ease,opacity .26s ease;}
.faq-item.is-open .faq-icon i:last-child{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a-inner{padding:0 0 22px 34px;font-size:15px;line-height:1.85;color:var(--ink-2);}
@media (min-width:768px){.faq-a-inner{padding-left:44px;max-width:820px;}}

/* ---------- CTA ---------- */
.cta-band{margin-top:72px;border-radius:24px;background:var(--ink);color:#fff;padding:40px 24px;}
@media (min-width:768px){.cta-band{padding:56px 48px;}}
@media (min-width:1024px){.cta-band{display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center;}}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.01em;line-height:1.25;}
.cta-band .cta-sub{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.72);max-width:520px;}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.cta-point{display:inline-flex;align-items:center;min-height:32px;padding:5px 14px;border-radius:999px;border:1px solid rgba(255,255,255,.18);font-size:13px;color:rgba(255,255,255,.78);}
.cta-form{margin-top:28px;}
@media (min-width:1024px){.cta-form{margin-top:0;}}
.field-label{display:block;font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.66);margin-bottom:10px;}
.field-row{display:grid;gap:10px;grid-template-columns:1fr;}
@media (min-width:560px){.field-row{grid-template-columns:minmax(0,1fr) auto;}}
.field-row input{min-height:48px;width:100%;padding:0 16px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;}
.field-row input::placeholder{color:rgba(255,255,255,.45);}
.field-row input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(0,216,160,.32);background:rgba(255,255,255,.09);}
.field-error{margin-top:12px;font-size:13px;line-height:1.7;color:var(--warn);}
.field-ok{margin-top:12px;font-size:13px;line-height:1.7;color:var(--accent);border:1px solid rgba(0,216,160,.4);border-radius:10px;padding:10px 14px;background:rgba(0,216,160,.08);}
.check-line{display:flex;align-items:flex-start;gap:10px;margin-top:16px;font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.6);}
.check-line input{margin-top:4px;width:16px;height:16px;accent-color:var(--accent);}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:0;background:var(--surface);border-top:1px solid var(--line);padding-top:64px;}
.footer-grid{display:grid;gap:36px;grid-template-columns:1fr;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px;}}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--text-sub);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:800;letter-spacing:.04em;color:var(--ink);margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--text-sub);transition:color .18s ease;}
.footer-col ul a:hover{color:var(--ink);text-decoration:underline;}
.footer-bottom{margin-top:52px;border-top:1px solid var(--line);}
.footer-bottom-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding:20px 0 32px;font-size:13px;color:var(--text-sub);}
@media (max-width:520px){
  .footer-bottom-inner{flex-direction:column;align-items:flex-start;}
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
    --ink:#13131A;
    --ink-2:#2B2B36;
    --accent:#00D8A0;
    --accent-2:#7C5CFF;
    --bg:#F7F7F5;
    --surface:#FFFFFF;
    --line:#E7E7E3;
    --text-sub:#5C5C68;
    --warn:#FFB020;
    --radius-card:16px;
    --radius-btn:10px;
    --shadow-1:0 1px 2px rgba(19,19,26,.04);
    --shadow-2:0 12px 32px rgba(19,19,26,.08);
    --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;scroll-padding-top:104px;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:var(--font);
    font-size:16px;
    line-height:1.85;
    color:var(--ink-2);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  h1,h2,h3,h4,p,figure{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  input{font:inherit;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px;}
  .tabular{font-variant-numeric:tabular-nums;}

  /* 容器 */
  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:1024px){.container-x{padding:0 32px;}}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
    transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
  }
  .btn-primary{background:var(--ink);color:#fff;border:1px solid var(--ink);}
  .btn-primary:hover{background:var(--accent);border-color:var(--accent);color:var(--ink);}
  .btn-ghost{background:transparent;color:var(--ink);border:1px solid rgba(19,19,26,.26);}
  .btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:#fff;}
  .btn-light{background:var(--accent);color:var(--ink);border:1px solid var(--accent);}
  .btn-light:hover{background:#00c391;border-color:#00c391;color:var(--ink);}
  .btn-onDark{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.34);}
  .btn-onDark:hover{background:#fff;color:var(--ink);border-color:#fff;}
  .btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
    border-bottom:1px solid transparent;transition:border-color .18s ease,color .18s ease;
  }
  .btn-text .arw{transition:transform .18s ease;}
  .btn-text:hover{border-bottom-color:var(--ink);}
  .btn-text:hover .arw{transform:translateX(4px);}

  /* 顶部提示条 */
  .notice-bar{background:var(--ink);color:rgba(255,255,255,.8);font-size:13px;}
  .notice-inner{
    display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
    min-height:48px;padding:8px 0;
  }
  .notice-left{display:flex;align-items:center;gap:10px;}
  .notice-dot{width:7px;height:7px;border-radius:999px;background:var(--accent);flex:none;box-shadow:0 0 0 4px rgba(0,216,160,.16);}
  .notice-inner .btn-onDark{min-height:32px;padding:0 14px;font-size:13px;}

  /* 头部导航 */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(247,247,245,.92);
    border-bottom:1px solid transparent;
    transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .site-header.is-stuck{
    background:rgba(247,247,245,.86);
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    border-bottom-color:var(--line);
    box-shadow:0 1px 0 rgba(19,19,26,.02);
  }
  .header-inner{display:flex;align-items:center;gap:24px;min-height:72px;position:relative;}
  .brand{display:flex;align-items:center;gap:10px;flex:none;}
  .brand-mark{
    width:38px;height:38px;border-radius:11px;background:var(--ink);color:var(--accent);
    display:grid;place-items:center;font-size:17px;font-weight:900;flex:none;
  }
  .brand-text strong{display:block;font-size:16px;font-weight:800;color:var(--ink);line-height:1.25;letter-spacing:-.01em;}
  .brand-text em{display:block;font-style:normal;font-size:12px;color:var(--text-sub);line-height:1.5;}
  .nav-chips{display:none;}
  .header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
  .nav-toggle{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);
    display:grid;place-items:center;gap:4px;padding:0;
  }
  .nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;}
  .site-header.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg);}
  .site-header.nav-open .nav-toggle span:nth-child(2){opacity:0;}
  .site-header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

  @media (min-width:1024px){
    .nav-chips{display:flex;align-items:center;gap:2px;margin-left:8px;}
    .nav-toggle{display:none;}
    .nav-chip{
      position:relative;display:inline-flex;align-items:center;min-height:40px;padding:0 14px;
      border-radius:999px;font-size:14px;color:var(--text-sub);
      transition:background-color .18s ease,color .18s ease;
    }
    .nav-chip:hover{background:rgba(19,19,26,.05);color:var(--ink);}
    .nav-chip.is-active{color:var(--ink);font-weight:700;background:rgba(19,19,26,.04);}
    .nav-chip.is-active::after{
      content:"";position:absolute;left:50%;bottom:5px;transform:translateX(-50%);
      width:18px;height:2px;border-radius:2px;background:var(--accent);
      animation:chipIn .24s ease;
    }
  }
  @keyframes chipIn{from{width:0;opacity:.35;}to{width:18px;opacity:1;}}

  @media (max-width:1023px){
    .nav-chips{display:none;}
    .site-header.nav-open .nav-chips{
      display:flex;flex-direction:column;align-items:stretch;gap:2px;
      position:absolute;left:-20px;right:-20px;top:100%;
      background:var(--surface);border-bottom:1px solid var(--line);
      padding:12px 20px 20px;box-shadow:var(--shadow-2);
    }
    .nav-chip{
      display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:12px;
      font-size:15px;color:var(--ink-2);
    }
    .nav-chip:hover{background:rgba(19,19,26,.05);}
    .nav-chip.is-active{background:rgba(0,216,160,.12);color:var(--ink);font-weight:700;border-left:3px solid var(--accent);}
  }

  /* 通用板块 */
  .section{padding:64px 0;}
  @media (min-width:1024px){.section{padding:104px 0;}}
  .sec-head{margin-bottom:32px;}
  .sec-kicker{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--text-sub);margin-bottom:10px;}
  .sec-title{
    position:relative;padding-left:18px;
    font-size:clamp(24px,3.2vw,36px);font-weight:800;line-height:1.24;color:var(--ink);
    letter-spacing:-.02em;
  }
  .sec-title::before{
    content:"";position:absolute;left:0;top:.24em;width:4px;height:24px;border-radius:3px;background:var(--accent);
  }
  .sec-desc{margin-top:12px;font-size:15px;color:var(--text-sub);max-width:720px;}
  .hairline{height:1px;background:var(--line);border:0;margin:0;}

  /* 分类页头 */
  .cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
  .cat-hero::before{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center right;
    opacity:.13;
  }
  .cat-hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(247,247,245,.96) 0%,rgba(247,247,245,.78) 46%,rgba(247,247,245,.42) 100%);
  }
  .cat-hero-inner{position:relative;z-index:2;padding:56px 0 44px;}
  @media (min-width:1024px){.cat-hero-inner{padding:88px 0 64px;}}
  .cat-crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-sub);margin-bottom:20px;flex-wrap:wrap;}
  .cat-crumb a:hover{color:var(--ink);text-decoration:underline;}
  .cat-crumb .sep{opacity:.5;}
  .cat-h1{
    font-size:clamp(32px,5vw,60px);font-weight:900;line-height:1.12;letter-spacing:-.025em;color:var(--ink);
    max-width:16em;
  }
  .cat-h1 .hl{
    display:inline-block;position:relative;color:var(--ink);
    background:linear-gradient(180deg,transparent 62%,rgba(0,216,160,.34) 62%,rgba(0,216,160,.34) 92%,transparent 92%);
  }
  .cat-sub{margin-top:18px;font-size:16px;color:var(--text-sub);max-width:640px;line-height:1.9;}
  .cat-meta{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--text-sub);}
  .cat-meta b{color:var(--ink);font-weight:700;}
  .chip-row{display:flex;gap:8px;overflow-x:auto;padding:22px 0 4px;margin-top:8px;scrollbar-width:thin;}
  .chip-row::-webkit-scrollbar{height:4px;}
  .chip-row::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px;}
  .chip-link{
    display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;
    border:1px solid var(--line);background:var(--surface);font-size:14px;color:var(--ink-2);
    white-space:nowrap;transition:border-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease;
  }
  .chip-link:hover{border-color:var(--ink);color:var(--ink);box-shadow:var(--shadow-1);transform:translateY(-1px);}
  .watermark{
    position:absolute;right:-6px;bottom:-56px;z-index:1;
    font-size:clamp(110px,20vw,260px);font-weight:900;line-height:1;letter-spacing:-.06em;
    color:rgba(19,19,26,.045);pointer-events:none;user-select:none;
  }

  /* 流程时间轴 */
  .flow-panel{
    border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);
    padding:28px 20px;box-shadow:var(--shadow-1);
  }
  @media (min-width:1024px){.flow-panel{padding:40px 36px;}}
  .flow-rail{position:relative;display:grid;gap:22px;}
  @media (min-width:768px){.flow-rail{grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;}}
  @media (min-width:768px){
    .flow-rail::before{
      content:"";position:absolute;top:13px;left:9%;right:9%;height:2px;
      background:linear-gradient(90deg,rgba(19,19,26,.22),rgba(0,216,160,.55),rgba(19,19,26,.18));
      border-radius:2px;
    }
  }
  .flow-step{position:relative;padding-top:0;}
  @media (min-width:768px){.flow-step{padding-top:44px;}}
  .flow-dot{
    position:relative;z-index:2;display:inline-flex;align-items:center;justify-content:center;
    width:28px;height:28px;border-radius:999px;background:var(--surface);border:2px solid var(--ink);
    font-size:12px;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;
  }
  @media (min-width:768px){
    .flow-dot{position:absolute;top:0;left:0;}
  }
  .flow-step:first-child .flow-dot{border-color:var(--accent);box-shadow:0 0 0 4px rgba(0,216,160,.16);}
  .flow-body{margin-top:12px;}
  .flow-body h3{font-size:17px;font-weight:700;color:var(--ink);line-height:1.45;}
  .flow-body p{margin-top:6px;font-size:14px;color:var(--text-sub);line-height:1.7;}
  .flow-tag{
    display:inline-block;margin-bottom:8px;padding:2px 10px;border-radius:999px;
    font-size:12px;color:var(--ink-2);background:rgba(19,19,26,.05);border:1px solid var(--line);
  }

  /* 步骤说明卡 */
  .grid-cards{display:grid;gap:20px;grid-template-columns:1fr;}
  @media (min-width:768px){.grid-cards{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (min-width:1180px){.grid-cards.cols-3{grid-template-columns:repeat(3,minmax(0,1fr));}}
  .step-card{
    position:relative;display:flex;flex-direction:column;gap:14px;
    padding:26px 24px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);
    box-shadow:var(--shadow-1);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
  }
  .step-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);border-color:rgba(19,19,26,.16);}
  .step-card::before{
    content:"";position:absolute;left:0;top:26px;width:3px;height:0;border-radius:0 3px 3px 0;
    background:var(--accent);transition:height .22s ease;
  }
  .step-card:hover::before{height:44px;}
  .step-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .step-badge{
    display:inline-flex;align-items:center;min-height:26px;padding:0 12px;border-radius:999px;
    background:var(--ink);color:#fff;font-size:12px;font-weight:700;letter-spacing:.04em;
  }
  .step-phase{font-size:12px;color:var(--text-sub);letter-spacing:.08em;}
  .step-card h3{font-size:20px;font-weight:700;color:var(--ink);line-height:1.4;}
  .step-list li{
    position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-2);line-height:1.75;margin-top:10px;
  }
  .step-list li::before{
    content:"";position:absolute;left:0;top:.68em;width:7px;height:7px;border-radius:2px;
    background:rgba(0,216,160,.85);transform:rotate(45deg);
  }
  .step-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-sub);}

  /* 规则要点 */
  .rule-grid{display:grid;gap:18px;grid-template-columns:1fr;}
  @media (min-width:768px){.rule-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  .rule-card{
    display:flex;gap:18px;padding:24px 22px;border:1px solid var(--line);border-radius:var(--radius-card);
    background:var(--surface);box-shadow:var(--shadow-1);transition:background-color .2s ease,box-shadow .2s ease;
  }
  .rule-card:hover{background:#FCFCFB;box-shadow:var(--shadow-2);}
  .rule-no{
    flex:none;font-size:26px;font-weight:900;line-height:1;color:transparent;
    -webkit-text-stroke:1.4px rgba(19,19,26,.34);font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  }
  .rule-card h3{font-size:18px;font-weight:700;color:var(--ink);line-height:1.5;}
  .rule-card p{margin-top:8px;font-size:14.5px;color:var(--text-sub);line-height:1.8;}
  .rule-flag{
    display:inline-flex;align-items:center;gap:6px;margin-top:14px;padding:3px 10px;border-radius:999px;
    border:1px solid var(--line);font-size:12px;color:var(--text-sub);background:#FAFAF8;
  }
  .rule-flag i{width:6px;height:6px;border-radius:999px;background:var(--warn);display:block;}

  /* 核对清单 */
  .check-wrap{display:grid;gap:28px;grid-template-columns:1fr;align-items:start;}
  @media (min-width:1024px){.check-wrap{grid-template-columns:1.15fr .85fr;gap:48px;}}
  .check-item{
    display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);
    transition:background-color .2s ease;
  }
  .check-item:hover{background:rgba(19,19,26,.02);}
  .check-item:first-child{padding-top:4px;}
  .check-item:last-child{border-bottom:0;}
  .check-mark{
    flex:none;width:26px;height:26px;border-radius:8px;border:1px solid var(--line);background:var(--surface);
    display:grid;place-items:center;margin-top:4px;
  }
  .check-mark svg{width:14px;height:14px;stroke:var(--accent);stroke-width:2.6;fill:none;stroke-linecap:round;stroke-linejoin:round;}
  .check-item h3{font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.5;}
  .check-item p{margin-top:6px;font-size:14.5px;color:var(--text-sub);line-height:1.8;}
  .figure-card{
    border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--surface);
    box-shadow:var(--shadow-1);
  }
  .figure-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#EFEFEB;}
  .figure-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
  .figure-card:hover .figure-media img{transform:scale(1.03);}
  .figure-body{padding:20px 22px 24px;}
  .figure-body h3{font-size:17px;font-weight:700;color:var(--ink);}
  .figure-body p{margin-top:8px;font-size:14px;color:var(--text-sub);line-height:1.8;}
  .figure-chip{
    position:absolute;left:12px;top:12px;padding:4px 12px;border-radius:999px;
    background:rgba(19,19,26,.72);color:#fff;font-size:12px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  }

  /* FAQ */
  .faq-list{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;gap:16px;min-height:64px;padding:16px 4px;text-align:left;
    transition:background-color .18s ease;
  }
  .faq-q:hover{background:rgba(19,19,26,.02);}
  .faq-no{
    flex:none;width:32px;font-size:13px;font-weight:800;color:var(--warn);font-variant-numeric:tabular-nums;
    letter-spacing:.02em;
  }
  .faq-title{flex:1;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;}
  .faq-icon{
    position:relative;flex:none;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);
    transition:transform .26s ease,border-color .26s ease,background-color .26s ease;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
    transform:translate(-50%,-50%);transition:background-color .26s ease;
  }
  .faq-icon::before{width:11px;height:1.6px;}
  .faq-icon::after{width:1.6px;height:11px;transition:opacity .26s ease,background-color .26s ease;}
  .faq-item.is-open .faq-icon{transform:rotate(180deg);border-color:var(--accent);background:rgba(0,216,160,.12);}
  .faq-item.is-open .faq-icon::after{opacity:0;}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
  .faq-item.is-open .faq-a{max-height:360px;}
  .faq-a-inner{padding:0 4px 24px 48px;font-size:14.5px;color:var(--text-sub);line-height:1.85;}
  .faq-a-inner p+p{margin-top:10px;}

  /* CTA */
  .cta-band{
    position:relative;overflow:hidden;background:var(--ink);border-radius:24px;
    padding:40px 24px;color:#fff;
  }
  @media (min-width:1024px){.cta-band{padding:56px 56px;}}
  .cta-band::after{
    content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:999px;
    background:radial-gradient(circle at center,rgba(124,92,255,.34),rgba(0,216,160,.16) 54%,transparent 72%);
    pointer-events:none;
  }
  .cta-inner{position:relative;z-index:2;display:grid;gap:28px;}
  @media (min-width:1024px){.cta-inner{grid-template-columns:1.2fr .8fr;align-items:center;gap:48px;}}
  .cta-inner h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.28;letter-spacing:-.02em;}
  .cta-inner p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.72);line-height:1.9;max-width:560px;}
  .cta-btns{display:flex;flex-wrap:wrap;gap:12px;}
  .cta-points{display:flex;flex-wrap:wrap;gap:10px;}
  .cta-points span{
    display:inline-flex;align-items:center;min-height:32px;padding:0 14px;border-radius:999px;
    border:1px solid rgba(255,255,255,.18);font-size:13px;color:rgba(255,255,255,.78);
  }

  /* 页脚 */
  .site-footer{border-top:1px solid var(--line);background:var(--surface);margin-top:80px;}
  .footer-main{padding:56px 0 40px;}
  @media (min-width:1024px){.footer-main{padding:72px 0 48px;}}
  .footer-grid{display:grid;gap:34px;grid-template-columns:1fr;}
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:48px;}}
  .footer-brand p{margin-top:16px;font-size:14px;color:var(--text-sub);line-height:1.85;max-width:340px;}
  .footer-col h4{font-size:14px;font-weight:800;color:var(--ink);letter-spacing:.02em;margin-bottom:16px;}
  .footer-col li{margin-bottom:11px;}
  .footer-col a{font-size:14px;color:var(--text-sub);transition:color .16s ease;}
  .footer-col a:hover{color:var(--ink);text-decoration:underline;}
  .footer-bottom{border-top:1px solid var(--line);padding:18px 0;}
  .footer-bottom-inner{
    display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
    font-size:13px;color:var(--text-sub);line-height:1.7;
  }

  /* 滚动渐入 */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease;}
  .reveal.is-in{opacity:1;transform:none;}

  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;transition:none;}
    *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  }

/* roulang page: category2 */
:root{
  --ink:#13131A;
  --ink-2:#2B2B36;
  --accent:#00D8A0;
  --accent-2:#7C5CFF;
  --bg:#F7F7F5;
  --surface:#FFFFFF;
  --line:#E7E7E3;
  --text-sub:#5C5C68;
  --warn:#FFB020;
  --r-card:16px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(19,19,26,.04);
  --shadow-2:0 12px 32px rgba(19,19,26,.08);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;line-height:1.2}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container-x{padding:0 32px}}

/* ---------- 顶部活动提示条 ---------- */
.notice-bar{background:var(--ink);color:#fff}
.notice-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:52px;padding-top:8px;padding-bottom:8px;flex-wrap:wrap}
.notice-text{font-size:13px;line-height:1.6;color:rgba(255,255,255,.82);letter-spacing:.01em}
.notice-text strong{color:var(--accent);font-weight:700}
.notice-tag{display:inline-flex;align-items:center;height:22px;padding:0 10px;margin-right:10px;border-radius:999px;background:rgba(0,216,160,.14);color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.02em}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:14px;font-weight:600;letter-spacing:.01em;white-space:nowrap;transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease}
.btn-primary{background:var(--ink);color:#fff;border:1px solid var(--ink)}
.btn-primary:hover{background:var(--accent);border-color:var(--accent);color:var(--ink)}
.btn-outline{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff}
.btn-light{background:var(--accent);color:var(--ink);border:1px solid var(--accent)}
.btn-light:hover{background:#00C192;border-color:#00C192}
.btn-ghost-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.32)}
.btn-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-sm{min-height:40px;padding:0 16px;font-size:13px}
.btn-lg{min-height:52px;padding:0 26px;font-size:15px}
@media (max-width:1023px){.btn-sm{min-height:44px;padding:0 18px}}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(247,247,245,.9);border-bottom:1px solid transparent;transition:background-color .24s ease,border-color .24s ease,box-shadow .24s ease}
.site-header.is-scrolled{background:rgba(247,247,245,.86);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(19,19,26,.02)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:38px;height:38px;flex:none;border-radius:11px;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:900;letter-spacing:-.02em}
.brand-text{display:block;line-height:1.25}
.brand-text strong{display:block;font-size:15px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.brand-text em{display:block;font-style:normal;font-size:11px;color:var(--text-sub);letter-spacing:.08em}
.nav-chips{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-chip{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:999px;font-size:14px;color:var(--text-sub);transition:color .18s ease,background-color .18s ease}
.nav-chip::after{content:"";position:absolute;left:50%;right:50%;bottom:8px;height:2px;background:var(--accent);border-radius:2px;transition:left .24s ease,right .24s ease}
.nav-chip:hover{background:rgba(19,19,26,.045);color:var(--ink)}
.nav-chip.is-active{color:var(--ink);font-weight:700}
.nav-chip.is-active::after{left:14px;right:14px}
.header-actions{display:flex;align-items:center;gap:12px;flex:none}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .24s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:var(--surface)}
.mobile-drawer.is-open{display:block}
.mobile-drawer ul{padding:10px 0}
.mobile-drawer a{display:flex;align-items:center;min-height:48px;padding:0 4px;font-size:15px;color:var(--text-sub);border-bottom:1px solid var(--line)}
.mobile-drawer li:last-child a{border-bottom:0}
.mobile-drawer a.is-active{color:var(--ink);font-weight:700}
@media (max-width:1023px){
  .nav-chips{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{min-height:64px;gap:14px}
  .header-actions .btn{display:none}
}

/* ---------- 分类页头 ---------- */
.cat-head{position:relative;overflow:hidden;padding:56px 0 44px;border-bottom:1px solid var(--line)}
.cat-head::before{
  content:"02";
  position:absolute;right:-1%;top:-30px;
  font-size:clamp(140px,24vw,280px);
  font-weight:900;line-height:1;letter-spacing:-.05em;
  color:rgba(19,19,26,.04);pointer-events:none;user-select:none;font-variant-numeric:tabular-nums;
}
.cat-head-inner{position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--text-sub);margin-bottom:16px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.cat-title{font-size:clamp(36px,6.4vw,68px);font-weight:900;letter-spacing:-.02em;line-height:1.12;max-width:16em}
.cat-title span{display:block;font-size:.44em;font-weight:700;letter-spacing:0;color:var(--text-sub);margin-top:14px;line-height:1.5}
.cat-sub{max-width:660px;margin-top:20px;font-size:16px;color:var(--text-sub);line-height:1.85}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:var(--surface);font-size:13px;color:var(--ink-2);transition:background-color .18s ease,border-color .18s ease,color .18s ease,transform .18s ease}
.chip:hover{background:#EFEFEB;border-color:#D8D8D2}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:600}
.cat-meta{display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:28px;font-size:13px;color:var(--text-sub);font-variant-numeric:tabular-nums}
.cat-meta b{color:var(--ink);font-weight:800;font-size:16px;margin-right:4px}
@media (max-width:767px){
  .cat-head{padding:40px 0 34px}
  .cat-head::before{font-size:130px;top:-16px;right:-6%}
}

/* ---------- 板块通用 ---------- */
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:32px}
.sec-title{display:flex;align-items:center;gap:12px;font-size:clamp(24px,3.2vw,36px);font-weight:800;letter-spacing:-.015em}
.sec-title .bar{display:inline-block;width:4px;height:22px;border-radius:2px;background:var(--accent);flex:none}
.sec-desc{margin-top:14px;font-size:15px;color:var(--text-sub);line-height:1.85}

/* ---------- 图墙 / 双列错落 ---------- */
.filter-chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;margin-bottom:28px;scrollbar-width:none}
.filter-chips::-webkit-scrollbar{display:none}
.masonry{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:768px){
  .masonry{grid-template-columns:repeat(2,1fr);column-gap:28px;row-gap:34px}
  .masonry .mcard:nth-child(even){margin-top:48px}
}
.mcard{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease}
.mcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DCDCD5}
.mcard.is-hidden{display:none}
.mcover{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--bg);background-image:repeating-linear-gradient(135deg,rgba(19,19,26,.045) 0 1px,transparent 1px 10px)}
.mcard:nth-child(3n) .mcover{aspect-ratio:4/3}
.mcover img{width:100%;height:100%;object-fit:cover;transition:transform .42s ease}
.mcard:hover .mcover img{transform:scale(1.03)}
.mtag{position:absolute;left:14px;top:14px;display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:rgba(19,19,26,.72);color:#fff;font-size:12px;letter-spacing:.04em;backdrop-filter:blur(4px)}
.mbody{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.mtitle{font-size:19px;font-weight:700;letter-spacing:-.01em;line-height:1.4}
.mtext{margin-top:10px;font-size:14px;color:var(--text-sub);line-height:1.8}
.mlink{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:13px;font-weight:600;color:var(--ink)}
.mlink span{transition:transform .2s ease}
.mcard:hover .mlink span{transform:translateX(4px)}
.mcard:hover .mtitle{text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:5px}

/* ---------- 登录方式对照 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:start}
@media (min-width:1024px){.compare-grid{grid-template-columns:1.15fr .85fr;gap:64px}}
.cmp-list{margin-top:26px}
.cmp-item{position:relative;display:flex;gap:18px;padding:22px 16px 22px 18px;border-top:1px solid var(--line);transition:background-color .2s ease}
.cmp-item:last-child{border-bottom:1px solid var(--line)}
.cmp-item::before{content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:2px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .24s ease}
.cmp-item:hover{background:rgba(19,19,26,.025)}
.cmp-item:hover::before{transform:scaleY(1)}
.cmp-num{flex:none;min-width:46px;font-size:26px;font-weight:900;color:#D9D9D2;line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-.03em}
.cmp-item:hover .cmp-num{color:var(--accent)}
.cmp-item h3{font-size:17px;font-weight:700}
.cmp-item p{margin-top:8px;font-size:14px;color:var(--text-sub);line-height:1.85}
.compare-media{position:relative}
.compare-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--line);background:var(--bg)}
.media-note{margin-top:14px;padding:14px 16px;border-radius:12px;background:var(--bg);border:1px solid var(--line);font-size:13px;color:var(--text-sub);line-height:1.75}
.media-note b{color:var(--ink);font-weight:700}

/* ---------- 安全自检清单 ---------- */
.checklist{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:768px){.checklist{grid-template-columns:repeat(2,1fr);gap:18px}}
.check-item{display:flex;gap:14px;padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease}
.check-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#DCDCD5}
.check-icon{flex:none;width:30px;height:30px;border-radius:9px;background:rgba(0,216,160,.14);color:#00956F;display:grid;place-items:center;font-size:15px;font-weight:900}
.check-item h3{font-size:16px;font-weight:700}
.check-item p{margin-top:8px;font-size:14px;color:var(--text-sub);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{display:flex;align-items:center;gap:16px;width:100%;min-height:64px;padding:18px 4px;text-align:left;transition:background-color .18s ease}
.faq-q:hover{background:rgba(19,19,26,.025)}
.faq-num{flex:none;font-size:14px;font-weight:800;color:var(--warn);letter-spacing:.02em;font-variant-numeric:tabular-nums}
.faq-text{flex:1;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6}
.faq-icon{position:relative;flex:none;width:22px;height:22px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;transform:translate(-50%,-50%);transition:transform .26s ease,opacity .26s ease}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-item.is-open .faq-icon::before{transform:translate(-50%,-50%) rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a-inner{padding:0 4px 22px 30px;font-size:14.5px;color:var(--text-sub);line-height:1.9}
.faq-a-inner p+p{margin-top:10px}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:#fff;margin-top:8px}
.cta-inner{display:grid;grid-template-columns:1fr;gap:26px;padding-top:56px;padding-bottom:56px;align-items:center}
@media (min-width:1024px){.cta-inner{grid-template-columns:1.3fr .7fr;gap:48px;padding-top:72px;padding-bottom:72px}}
.cta-title{color:#fff;font-size:clamp(24px,3.2vw,34px);font-weight:800;letter-spacing:-.015em}
.cta-desc{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.7);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (min-width:1024px){.cta-actions{justify-content:flex-end}}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;border-top:1px solid var(--line);background:var(--bg)}
.footer-main{padding:64px 0 44px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px}}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--text-sub);line-height:1.8;max-width:330px}
.footer-col h4{font-size:14px;font-weight:800;color:var(--ink);margin-bottom:14px;letter-spacing:.02em}
.footer-col li+li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--text-sub);transition:color .18s ease}
.footer-col a:hover{color:var(--ink);text-decoration:underline}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0}
.footer-bottom-inner{display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:13px;color:var(--text-sub)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#13131A;
  --ink-2:#2B2B36;
  --accent:#00D8A0;
  --accent-2:#7C5CFF;
  --bg:#F7F7F5;
  --surface:#FFFFFF;
  --line:#E7E7E3;
  --text-sub:#5C5C68;
  --warn:#FFB020;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(19,19,26,.04);
  --shadow-2:0 12px 32px rgba(19,19,26,.08);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px}}

/* ---------- top notice bar ---------- */
.topbar{background:var(--ink);color:#fff}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 0;min-height:48px;flex-wrap:wrap}
.topbar-note{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.74)}
.topbar-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(0,216,160,.16);flex:0 0 8px}
.topbar-btn{
  display:inline-flex;align-items:center;gap:8px;min-height:34px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.28);color:#fff;font-size:13px;background:transparent;
  transition:background .18s,color .18s,border-color .18s;
}
.topbar-btn:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,247,245,.86);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s,background .2s;
}
.site-header.is-stuck{border-bottom-color:var(--line);background:rgba(247,247,245,.94)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;min-height:44px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:var(--accent);
  display:grid;place-items:center;font-weight:900;font-size:17px;flex:0 0 34px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.18}
.brand-text strong{font-size:15px;font-weight:800;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-sub);letter-spacing:.08em}

.nav-chips{display:flex;align-items:center;gap:2px;flex-wrap:nowrap}
.nav-chip{
  position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 12px;
  font-size:14px;color:var(--text-sub);border-radius:8px;white-space:nowrap;
  transition:background .12s,color .12s;
}
.nav-chip::after{
  content:"";position:absolute;left:50%;right:50%;bottom:8px;height:2px;border-radius:2px;
  background:var(--accent);transition:left .24s,right .24s;
}
.nav-chip:hover{background:rgba(19,19,26,.05);color:var(--ink)}
.nav-chip.is-active{color:var(--ink);font-weight:700}
.nav-chip.is-active::after{left:12px;right:12px}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;flex:0 0 auto}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:background .18s,color .18s,border-color .18s,transform .18s;
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:var(--ink)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{background:#00c28f}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--ink);
  min-height:44px;border-bottom:1px solid transparent;transition:border-color .18s;
}
.btn-text .arrow{transition:transform .18s}
.btn-text:hover{border-bottom-color:var(--ink)}
.btn-text:hover .arrow{transform:translateX(4px)}

.hamburger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:var(--surface);flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.hamburger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.is-open span:nth-child(2){opacity:0}
.hamburger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.drawer{position:fixed;inset:0;z-index:90;background:var(--bg);padding:20px;display:none;overflow-y:auto}
.drawer.is-open{display:block}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:var(--surface);
  font-size:22px;line-height:1;display:grid;place-items:center;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;margin:16px 0 24px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;min-height:52px;
  padding:0 4px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink-2);
}
.drawer-link.is-active{color:var(--ink);font-weight:800;box-shadow:inset 3px 0 0 var(--accent);padding-left:14px}
.drawer-cta{width:100%}

/* ---------- category hero ---------- */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;opacity:.07;
}
.cat-hero::after{
  content:"";position:absolute;right:-40px;top:-60px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(124,92,255,.16),rgba(124,92,255,0) 68%);
  pointer-events:none;
}
.cat-hero-inner{position:relative;z-index:1;padding:52px 0 40px}
@media (min-width:1024px){.cat-hero-inner{padding:84px 0 56px}}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-sub);margin-bottom:20px;flex-wrap:wrap}
.crumb a:hover{color:var(--ink);text-decoration:underline}
.crumb .sep{color:#B9B9B4}
.cat-eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;
  background:rgba(0,216,160,.12);border:1px solid rgba(0,216,160,.32);
  font-size:12px;font-weight:700;color:#0B7F60;letter-spacing:.06em;margin-bottom:18px;
}
.cat-title{
  font-size:clamp(34px,5vw,64px);font-weight:900;letter-spacing:-.02em;line-height:1.12;color:var(--ink);
  max-width:16em;
}
.cat-title .lite{display:block;font-size:clamp(18px,2vw,24px);font-weight:800;color:var(--text-sub);letter-spacing:0;margin-top:12px}
.cat-lead{max-width:56ch;margin-top:18px;font-size:16px;color:var(--text-sub);line-height:1.85}

.sub-chips{display:flex;gap:10px;margin-top:26px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
.sub-chips::-webkit-scrollbar{height:4px}
.sub-chips::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}
.sub-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--ink-2);
  transition:background .18s,border-color .18s,color .18s;
}
.sub-chip:hover{background:rgba(0,216,160,.10);border-color:rgba(0,216,160,.5);color:var(--ink)}

.stat-strip{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin-top:36px;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--line)}
@media (min-width:768px){.stat-strip{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat{background:var(--surface);padding:18px 18px 16px}
.stat-num{display:block;font-size:28px;font-weight:900;color:var(--ink);line-height:1.1;letter-spacing:-.01em}
.stat-num small{font-size:14px;font-weight:700;color:var(--text-sub);margin-left:4px}
.stat-label{display:block;margin-top:6px;font-size:13px;color:var(--text-sub)}

/* ---------- sections ---------- */
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:104px 0}}
.section-line{border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:36px}
.sec-title{
  position:relative;padding-left:18px;font-size:clamp(26px,3.4vw,40px);font-weight:800;
  line-height:1.2;letter-spacing:-.01em;color:var(--ink);
}
.sec-title::before{content:"";position:absolute;left:0;top:.22em;width:3px;height:24px;background:var(--accent);border-radius:2px}
.sec-desc{margin-top:12px;font-size:15px;color:var(--text-sub);max-width:62ch}
.sec-aside{font-size:13px;color:var(--text-sub)}

/* ---------- compare block ---------- */
.compare{display:grid;gap:0}
.compare-row{
  display:grid;grid-template-columns:1fr;gap:22px;align-items:center;
  padding:30px 0;border-bottom:1px solid var(--line);
}
.compare-row:first-child{padding-top:0}
@media (min-width:900px){
  .compare-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:52px;padding:40px 0}
  .compare-row.is-reverse .compare-media{order:2}
}
.compare-media{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-1)}
.compare-media img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.compare-media:hover img{transform:scale(1.03)}
.compare-tag{
  position:absolute;left:12px;top:12px;padding:5px 12px;border-radius:999px;
  background:rgba(19,19,26,.72);color:#fff;font-size:12px;font-weight:700;letter-spacing:.04em;
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.compare-body h3{font-size:20px;font-weight:700;color:var(--ink);line-height:1.35}
@media (min-width:1024px){.compare-body h3{font-size:22px}}
.compare-body p{margin-top:12px;font-size:15px;color:var(--text-sub);line-height:1.85}
.tick-list{margin-top:16px;display:grid;gap:8px}
.tick-list li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-2);line-height:1.75}
.tick-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;
  background:rgba(0,216,160,.22);box-shadow:inset 0 0 0 1px rgba(0,216,160,.9);
}
.compare-idx{font-size:13px;font-weight:800;color:var(--warn);letter-spacing:.14em;margin-bottom:8px;display:block}

/* ---------- point cards ---------- */
.point-cards{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:768px){.point-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1100px){.point-cards{grid-template-columns:repeat(3,minmax(0,1fr))}}
.point-card{
  display:flex;gap:16px;padding:18px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  transition:box-shadow .22s,transform .22s,border-color .22s;
}
.point-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D8D8D2}
.point-media{flex:0 0 84px;width:84px;border-radius:12px;overflow:hidden;background:var(--bg);border:1px solid var(--line)}
.point-media img{width:100%;height:100%;min-height:84px;object-fit:cover;transition:transform .3s}
.point-card:hover .point-media img{transform:scale(1.05)}
.point-body{min-width:0}
.point-body h3{font-size:17px;font-weight:700;color:var(--ink);line-height:1.35}
.point-body .point-note{margin-top:6px;font-size:13px;color:var(--text-sub)}
.point-list{margin-top:12px;display:grid;gap:6px}
.point-list li{position:relative;padding-left:14px;font-size:13.5px;color:var(--ink-2);line-height:1.7}
.point-list li::before{content:"";position:absolute;left:0;top:.66em;width:5px;height:5px;border-radius:50%;background:var(--accent)}

/* ---------- rhythm timeline ---------- */
.rhythm{display:grid;gap:18px;grid-template-columns:1fr}
@media (min-width:640px){.rhythm{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.rhythm{grid-template-columns:repeat(4,minmax(0,1fr))}}
.phase{
  position:relative;padding:24px 20px 22px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:transform .22s,box-shadow .22s;
}
.phase:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.phase-num{
  font-size:34px;font-weight:900;line-height:1;color:transparent;
  -webkit-text-stroke:1px rgba(19,19,26,.35);letter-spacing:-.02em;display:block;
}
.phase h3{margin-top:14px;font-size:17px;font-weight:700;color:var(--ink)}
.phase p{margin-top:8px;font-size:13.5px;color:var(--text-sub);line-height:1.75}
.phase-bar{height:3px;border-radius:3px;background:linear-gradient(90deg,var(--accent),rgba(124,92,255,.6));margin-top:16px}

/* ---------- dark band ---------- */
.dark-band{background:var(--ink);color:#fff}
.dark-band .sec-title{color:#fff}
.dark-band .sec-title::before{background:var(--accent)}
.dark-band .sec-desc{color:rgba(255,255,255,.68)}
.notes-grid{display:grid;gap:1px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-card);overflow:hidden}
@media (min-width:768px){.notes-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.note-cell{background:var(--ink);padding:24px 22px}
.note-cell h3{font-size:16px;font-weight:700;color:#fff}
.note-cell p{margin-top:10px;font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.66)}
.note-cell .dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--accent);margin-bottom:14px}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;padding:20px 0;min-height:64px;
  background:none;border:0;text-align:left;cursor:pointer;transition:background .16s;
}
.faq-q:hover{background:rgba(19,19,26,.025)}
.faq-idx{flex:0 0 30px;font-size:13px;font-weight:800;color:var(--warn);letter-spacing:.06em}
.faq-text{flex:1;font-size:16px;font-weight:600;color:var(--ink);line-height:1.5}
.faq-icon{position:relative;flex:0 0 22px;width:22px;height:22px;transition:transform .26s}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);border-radius:2px}
.faq-icon::before{left:0;right:0;top:10px;height:2px}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px;transition:opacity .26s}
.faq-item.is-open .faq-icon{transform:rotate(90deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a-inner{padding:0 0 22px 46px;font-size:15px;line-height:1.85;color:var(--text-sub)}
.faq-a-inner p+p{margin-top:10px}
@media (max-width:560px){.faq-a-inner{padding-left:0}}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:#fff;border-radius:0}
.cta-inner{padding:56px 0;display:grid;gap:26px;align-items:center}
@media (min-width:900px){.cta-inner{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);padding:76px 0;gap:48px}}
.cta-title{font-size:clamp(24px,3vw,36px);font-weight:900;line-height:1.25;color:#fff;letter-spacing:-.01em}
.cta-desc{margin-top:14px;font-size:15px;color:rgba(255,255,255,.7);line-height:1.8;max-width:52ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
@media (min-width:900px){.cta-actions{justify-content:flex-end}}
.cta-note{margin-top:20px;font-size:12.5px;color:rgba(255,255,255,.5)}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg)}
.footer-main{padding:56px 0 40px}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-sub);line-height:1.8;max-width:34ch}
.footer-col h4{font-size:14px;font-weight:800;color:var(--ink);letter-spacing:.02em;margin-bottom:14px}
.footer-col ul{display:grid;gap:2px}
.footer-col li a,.footer-col li span{display:inline-flex;align-items:center;min-height:40px;font-size:14px;color:var(--text-sub);transition:color .16s}
.footer-col li a:hover{color:var(--ink);text-decoration:underline}
.footer-bottom{border-top:1px solid var(--line)}
.footer-bottom-inner{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:18px 0;font-size:13px;color:var(--text-sub)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease}
.reveal.is-in{opacity:1;transform:none}

@media (max-width:1023px){
  .nav-chips{display:none}
  .hamburger{display:flex}
  .header-inner{min-height:64px;gap:12px}
}
@media (max-width:639px){
  .brand-text em{display:none}
  .header-cta{padding:0 14px;font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}