/* roulang page: index */
:root{
  --ink:#14161B;
  --ink-2:#2A2E36;
  --text:#3A3F47;
  --muted:#6A7079;
  --line:#E4E1DA;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --gold:#B0812F;
  --gold-soft:#D8B978;
  --cyan:#23BFA9;
  --lv1:#6B7280;
  --lv2:#23BFA9;
  --lv3:#B0812F;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --radius-xs:8px;
  --shadow-1:0 1px 2px rgba(20,22,27,.04);
  --shadow-2:0 8px 24px -12px rgba(20,22,27,.12);
  --shadow-3:0 18px 44px -20px rgba(20,22,27,.26);
  --ease:cubic-bezier(.2,.7,.2,1);
  --bs-primary:#14161B;
  --bs-body-color:#3A3F47;
  --bs-border-radius:16px;
  --bs-link-color:#14161B;
  --bs-link-hover-color:#B0812F;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color 160ms var(--ease)}
a:hover{color:var(--gold)}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:800;line-height:1.2}
p{margin:0 0 1.25em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media(min-width:1400px){.container{max-width:1320px}}
.section{padding:104px 0}
.section--tight{padding:72px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.12em;color:var(--gold);
  font-weight:600;margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--gold);display:block}
.sec-head{margin-bottom:44px;max-width:760px}
.sec-head h2{
  font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;
  display:flex;align-items:flex-start;gap:14px;
}
.sec-head h2::before{
  content:"";width:5px;height:1.05em;background:var(--gold);
  border-radius:3px;flex:0 0 auto;margin-top:.14em;
}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16px}
.sec-head--split{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;max-width:none;flex-wrap:wrap}
.link-more{
  font-size:14.5px;font-weight:600;color:var(--ink);
  display:inline-flex;align-items:center;gap:8px;border-bottom:1px solid var(--line);
  padding-bottom:4px;
}
.link-more i{transition:transform 180ms var(--ease)}
.link-more:hover i{transform:translateX(4px)}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border-radius:var(--radius-sm);font-size:15.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
  line-height:1.2;
}
.btn-x i{transition:transform 180ms var(--ease)}
.btn-ink{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-ink:hover{background:#0C0E12;color:#fff;border-color:var(--gold-soft);box-shadow:var(--shadow-2)}
.btn-ink:hover i{transform:translateX(4px)}
.btn-line{background:#fff;color:var(--ink);border-color:var(--ink)}
.btn-line:hover{background:var(--ink);color:#fff}
.btn-gold{background:var(--gold);color:#14161B;border-color:var(--gold)}
.btn-gold:hover{background:#14161B;color:var(--gold-soft);border-color:var(--gold-soft)}
.btn-gold:hover i{transform:translateX(4px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-sm{padding:10px 20px;font-size:14px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(247,246,243,.86);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow 200ms var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(20,22,27,.45)}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;transition:height 200ms var(--ease)}
.site-header.is-scrolled .nav-wrap{height:64px}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:26px;height:26px;background:var(--ink);border-radius:6px;
  position:relative;flex:0 0 auto;transform:rotate(45deg);
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;background:var(--gold-soft);border-radius:2px;
}
.brand-text{font-size:18px;font-weight:900;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--gold);
  transition:width 220ms var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.active{font-weight:700;color:var(--ink)}
.nav-link.active::after{width:16px}
.nav-right{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.search-toggle{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color 180ms var(--ease),color 180ms var(--ease);
}
.search-toggle:hover{border-color:var(--gold-soft);color:var(--gold)}
.nav-cta{padding:11px 22px;font-size:14.5px}
.nav-burger{
  display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-xs);
  cursor:pointer;position:relative;
}
.nav-burger span{
  position:absolute;left:12px;width:18px;height:1.8px;background:var(--ink);border-radius:2px;
  transition:transform 200ms var(--ease),opacity 160ms var(--ease);
}
.nav-burger span:nth-child(1){top:16px}
.nav-burger span:nth-child(2){top:23px}
body.nav-open .nav-burger span:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
body.nav-open .nav-burger span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}
.drawer{
  position:fixed;inset:0;z-index:1039;background:var(--bg);
  transform:translateY(-100%);transition:transform 280ms var(--ease);
  padding:86px 24px 32px;overflow-y:auto;display:flex;flex-direction:column;
}
body.nav-open .drawer{transform:translateY(0)}
body.nav-open{overflow:hidden}
.drawer a.drawer-link{
  display:block;font-size:18px;font-weight:600;color:var(--ink);
  padding:18px 4px;border-bottom:1px solid var(--line);
}
.drawer a.drawer-link.active{color:var(--gold)}
.drawer-foot{margin-top:auto;padding-top:28px}

/* ---------- Hero ---------- */
.hero{
  position:relative;background:var(--ink);color:#fff;overflow:hidden;
  min-height:min(88vh,760px);display:flex;align-items:center;
}
.hero-bg{
  position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  opacity:.42;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(20,22,27,.72) 0%,rgba(20,22,27,.86) 100%),
    repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 52px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 52px);
}
.hero .container{position:relative;z-index:2;padding-top:96px;padding-bottom:96px}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:.1em;
  border:1px solid rgba(216,185,120,.5);color:var(--gold-soft);
  padding:7px 15px;border-radius:999px;margin-bottom:24px;
}
.hero h1{
  color:#fff;font-size:clamp(2.25rem,5.2vw,4.25rem);line-height:1.06;
  letter-spacing:-.03em;font-weight:900;
}
.hero h1 em{font-style:normal;color:var(--gold-soft)}
.hero-sub{
  margin-top:22px;font-size:clamp(1rem,1.4vw,1.12rem);color:rgba(255,255,255,.76);
  max-width:34em;line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;margin-top:38px;padding-top:26px;border-top:1px solid rgba(255,255,255,.16)}
.hero-trust li{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.72)}
.hero-trust i{color:var(--cyan);font-size:13px}
.hero-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-lg);padding:30px 28px;backdrop-filter:blur(6px);
}
.hero-card h2{color:#fff;font-size:18px;font-weight:700;margin-bottom:6px}
.hero-card .hint{font-size:13.5px;color:rgba(255,255,255,.6);margin-bottom:22px}
.hero-list li{
  display:flex;align-items:flex-start;gap:14px;padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.hero-list li:last-child{border-bottom:none;padding-bottom:0}
.lv-dot{width:10px;height:10px;border-radius:3px;flex:0 0 auto;margin-top:11px}
.dot-1{background:var(--lv1)}.dot-2{background:var(--lv2)}.dot-3{background:var(--lv3)}
.dot-4{background:var(--gold-soft);box-shadow:0 0 0 3px rgba(216,185,120,.22)}
.hero-list strong{display:block;color:#fff;font-size:15.5px;font-weight:700}
.hero-list span{font-size:13.5px;color:rgba(255,255,255,.62);line-height:1.7;display:block;margin-top:3px}

/* ---------- 数据条 ---------- */
.stats{background:#fff;border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:38px 26px;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat b{display:block;font-size:clamp(1.6rem,2.6vw,2.1rem);color:var(--ink);font-weight:900;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat span{display:block;font-size:14px;color:var(--muted);margin-top:8px}

/* ---------- 权益对比表 ---------- */
.table-shell{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);overflow:hidden;
}
table.benefit{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
table.benefit th,table.benefit td{
  padding:0 22px;height:62px;text-align:left;border-bottom:1px solid var(--line);
  font-size:15px;vertical-align:middle;
}
table.benefit thead th{
  height:78px;background:#fff;font-size:14.5px;color:var(--ink);font-weight:800;
  border-bottom:1px solid var(--line);
}
table.benefit thead th small{display:block;font-weight:500;font-size:12.5px;color:var(--muted);margin-top:3px}
table.benefit tbody tr{transition:background 160ms var(--ease)}
table.benefit tbody tr:hover{background:#FBFAF8}
table.benefit tbody tr:last-child td{border-bottom:none}
.col-item{width:30%;color:var(--ink);font-weight:600}
.col-rec{position:relative;background:rgba(176,129,47,.06)}
table.benefit thead th.col-rec::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--gold);
}
.badge-rec{
  display:inline-block;font-size:11.5px;letter-spacing:.06em;color:#fff;background:var(--gold);
  border-radius:999px;padding:2px 9px;margin-left:8px;vertical-align:middle;font-weight:600;
}
.mark-yes,.mark-no{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2)}
.mark-yes::before{
  content:"";width:14px;height:14px;border-radius:50%;border:2px solid var(--cyan);flex:0 0 auto;
}
.mark-no{color:#9AA0A8}
.mark-no::before{content:"";width:12px;height:2px;background:#9AA0A8;flex:0 0 auto;border-radius:2px}
.table-note{
  display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
  padding:22px 24px;background:#FBFAF8;border-top:1px solid var(--line);font-size:14.5px;color:var(--muted);
}
.table-note a{font-weight:600;color:var(--ink);border-bottom:1px solid var(--gold-soft);padding-bottom:2px}

/* 移动端卡片版 */
.seg{display:none;gap:8px;overflow-x:auto;padding-bottom:14px;margin-bottom:20px}
.seg button{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:14px;color:var(--ink-2);cursor:pointer;transition:all 180ms var(--ease);
}
.seg button.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.m-card{display:none}
.m-card .m-row{
  display:flex;justify-content:space-between;align-items:center;gap:16px;padding:15px 18px;
  border-bottom:1px solid var(--line);font-size:15px;background:#fff;
}
.m-card .m-row:last-child{border-bottom:none}
.m-card .m-name{color:var(--ink);font-weight:600}
.m-card .badge-lv{
  font-size:12px;color:var(--gold);border:1px solid var(--gold-soft);border-radius:999px;padding:2px 10px;
}
@media(max-width:767px){
  .table-shell--full{display:none}
  .seg{display:flex}
  .m-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1)}
}

/* ---------- 等级阶梯 ---------- */
.level-list{border-top:1px solid var(--line)}
.level-item{
  position:relative;display:grid;grid-template-columns:112px minmax(0,1fr) 240px;
  gap:32px;align-items:start;padding:36px 24px 36px 28px;border-bottom:1px solid var(--line);
  transition:background 200ms var(--ease);
}
.level-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--lv1);
  transform:scaleY(0);transform-origin:top;transition:transform 220ms var(--ease);
}
.level-item:hover{background:#fff}
.level-item:hover::before{transform:scaleY(1)}
.level-item.l2::before{background:var(--lv2)}
.level-item.l3::before{background:var(--lv3)}
.level-item.l4::before{background:var(--gold-soft)}
.level-num{font-size:clamp(2rem,3.6vw,2.9rem);font-weight:900;color:var(--line);letter-spacing:-.04em;font-variant-numeric:tabular-nums;line-height:1}
.level-item:hover .level-num{color:var(--gold-soft)}
.level-body h3{font-size:1.28rem;font-weight:800}
.level-body .tagline{color:var(--muted);font-size:14.5px;margin-top:8px}
.level-points{margin-top:16px;display:grid;gap:8px}
.level-points li{display:flex;gap:10px;font-size:14.5px;color:var(--text)}
.level-points i{color:var(--cyan);font-size:12px;margin-top:9px}
.level-side{
  border-left:1px solid var(--line);padding-left:24px;font-size:14px;color:var(--muted);
}
.level-side b{display:block;color:var(--ink);font-size:15px;margin-bottom:6px}

/* ---------- 专属内容预览 ---------- */
.preview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.p-card{
  position:relative;background:var(--ink);color:rgba(255,255,255,.8);border-radius:var(--radius-lg);
  overflow:hidden;border:1px solid #22252C;transition:transform 200ms var(--ease),box-shadow 200ms var(--ease);
}
.p-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.p-thumb{aspect-ratio:3/2;overflow:hidden;position:relative;background:var(--ink-2)}
.p-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);opacity:.9}
.p-card:hover .p-thumb img{transform:scale(1.03)}
.p-thumb.locked img{filter:blur(2px) grayscale(.5);opacity:.35}
.p-body{padding:24px 24px 26px}
.p-tag{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--gold-soft);
  border:1px solid rgba(216,185,120,.4);border-radius:999px;padding:3px 11px;margin-bottom:14px;
}
.p-card h3{color:#fff;font-size:1.12rem;line-height:1.45;font-weight:700;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.p-card p{margin-top:12px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.62);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.p-meta{display:flex;justify-content:space-between;align-items:center;margin-top:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);font-size:13.5px;color:rgba(255,255,255,.55)}
.p-meta a{color:var(--gold-soft);font-weight:600;display:inline-flex;align-items:center;gap:7px}
.lock-ico{
  position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:50%;
  background:rgba(20,22,27,.7);border:1px solid rgba(255,255,255,.18);
  display:flex;align-items:center;justify-content:center;color:var(--gold-soft);font-size:13px;
}
.lock-ico.open{color:var(--cyan)}

/* ---------- 资讯卡片 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.n-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-1);
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.n-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--gold-soft)}
.n-thumb{aspect-ratio:16/10;overflow:hidden;background:#EFEDE8}
.n-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.n-card:hover .n-thumb img{transform:scale(1.03)}
.n-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.n-cat{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--gold);
  background:rgba(176,129,47,.08);border-radius:var(--radius-xs);padding:3px 10px;margin-bottom:12px;font-weight:600;
}
.n-card h3{font-size:1.06rem;line-height:1.5;font-weight:700;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.n-card h3 a{color:var(--ink)}
.n-card h3 a:hover{color:var(--gold)}
.n-card .n-sum{margin-top:12px;font-size:14.5px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.n-foot{margin-top:auto;padding-top:18px;display:flex;justify-content:space-between;align-items:center;font-size:13.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.n-foot a{font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:7px}
.empty-box{
  border:1px dashed var(--line);border-radius:var(--radius);background:#fff;
  min-height:200px;max-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:32px;
}
.empty-box p{color:var(--muted);font-size:15px}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px;align-items:start}
.faq-left h2{font-size:clamp(1.5rem,2.6vw,2.25rem);margin-bottom:16px}
.faq-left p{color:var(--muted);font-size:15.5px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;padding:24px 0;display:flex;justify-content:space-between;
  align-items:center;gap:24px;text-align:left;cursor:pointer;color:var(--ink);
  font-size:16.5px;font-weight:600;line-height:1.6;
}
.faq-q i{color:var(--gold);font-size:15px;transition:transform 220ms var(--ease);flex:0 0 auto}
.faq-q[aria-expanded="true"] i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms var(--ease)}
.faq-a p{padding:0 44px 24px 0;color:var(--muted);font-size:15px;line-height:1.9}

/* ---------- CTA ---------- */
.cta-band{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-60px;bottom:-60px;width:520px;
  background:repeating-linear-gradient(115deg,rgba(216,185,120,.16) 0 2px,transparent 2px 22px);
  transform:skewX(-12deg);pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center;padding:88px 0}
.cta-inner h2{color:#fff;font-size:clamp(1.6rem,3vw,2.4rem)}
.cta-inner .cta-sub{color:rgba(255,255,255,.7);margin-top:14px;font-size:16px;max-width:30em}
.price-box{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-lg);padding:32px 30px;
}
.price-box .lab{font-size:13.5px;color:rgba(255,255,255,.6);letter-spacing:.06em}
.price-num{display:flex;align-items:baseline;gap:10px;margin:10px 0 22px}
.price-num b{font-size:clamp(2.2rem,4vw,3rem);font-weight:900;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-.03em}
.price-num span{font-size:14px;color:rgba(255,255,255,.6)}
.price-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.cta-keep{display:flex;flex-wrap:wrap;gap:24px;margin-top:56px;padding-top:26px;border-top:1px solid rgba(255,255,255,.16);position:relative;z-index:2}
.cta-keep li{font-size:14px;color:rgba(255,255,255,.72);display:flex;align-items:center;gap:9px}
.cta-keep i{color:var(--cyan);font-size:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.62);padding:72px 0 0;font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2.4fr) minmax(0,2.4fr) minmax(0,3.2fr);gap:44px}
.foot-brand .brand-text{color:#fff;font-size:19px}
.foot-brand p{margin-top:18px;line-height:1.85;max-width:26em}
.foot-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:20px}
.foot-col li{margin-bottom:12px}
.foot-col a{color:rgba(255,255,255,.66);border-bottom:1px solid transparent;padding-bottom:2px;transition:all 180ms var(--ease)}
.foot-col a:hover{color:var(--gold-soft);border-bottom-color:var(--gold-soft)}
.foot-contact li{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px}
.foot-contact i{color:var(--gold-soft);font-size:13px;margin-top:7px}
.foot-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:24px 0 30px;
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;font-size:13.5px;
}
.qr-box{
  width:78px;height:78px;border-radius:var(--radius-xs);border:1px solid rgba(255,255,255,.2);
  background:repeating-conic-gradient(rgba(255,255,255,.28) 0 25%,transparent 0 50%) 0/12px 12px;
}
.foot-qr{display:flex;align-items:center;gap:16px}
.foot-qr span{font-size:13px;color:rgba(255,255,255,.55);max-width:9em;line-height:1.6}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 600ms var(--ease),transform 600ms var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media(max-width:1199px){
  .level-item{grid-template-columns:88px minmax(0,1fr);}
  .level-side{grid-column:1/-1;border-left:none;border-top:1px solid var(--line);padding:18px 0 0}
  .preview-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:991px){
  .nav-main{display:none}
  .nav-burger{display:inline-block}
  .nav-cta{display:none}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero .container{padding-top:68px;padding-bottom:68px}
  .cta-inner{grid-template-columns:1fr;padding:68px 0}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:36px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .section{padding:76px 0}
}
@media(max-width:767px){
  body{font-size:16px}
  .container{padding:0 18px}
  .preview-grid,.news-grid{grid-template-columns:1fr}
  .hero-trust{gap:16px}
  .level-item{padding:28px 16px 28px 18px;grid-template-columns:64px minmax(0,1fr);gap:18px}
  .level-num{font-size:1.9rem}
  .foot-grid{grid-template-columns:1fr}
  .cta-keep{gap:14px}
  .section{padding:60px 0}
  .sec-head{margin-bottom:30px}
}
@media(max-width:520px){
  .stats-grid{grid-template-columns:1fr}
  .stat{border-right:none;border-bottom:1px solid var(--line);padding:26px 18px}
  .stat:last-child{border-bottom:none}
  .hero-actions .btn-x{width:100%}
  .brand-text{font-size:16.5px}
}

/* roulang page: article */
:root{
  --ink:#14161B;
  --ink-2:#2A2E36;
  --text:#3A3F47;
  --muted:#6A7079;
  --line:#E4E1DA;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --gold:#B0812F;
  --gold-soft:#D8B978;
  --cyan:#23BFA9;
  --radius-sm:8px;
  --radius:16px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(20,22,27,.04);
  --shadow-2:0 8px 24px -12px rgba(20,22,27,.12);
  --t:180ms cubic-bezier(.2,.7,.2,1);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-primary:#14161B;
  --bs-body-color:#3A3F47;
  --bs-body-bg:#F7F6F3;
  --bs-border-radius:12px;
  --bs-link-color:#14161B;
  --bs-link-hover-color:#B0812F;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--gold);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.25;}
p{margin:0 0 1em;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  border-radius:6px;
}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){
  .container{max-width:1320px;}
}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 按钮 ============ */
.btn-x{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  padding:13px 22px;
  border-radius:12px;
  border:1px solid transparent;
  cursor:pointer;
  transition:all var(--t);
  white-space:nowrap;
}
.btn-x .ico{transition:transform var(--t);}
.btn-ink{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-ink:hover{color:#fff;box-shadow:inset 0 0 0 1px var(--gold);transform:translateY(-1px);}
.btn-ink:hover .ico{transform:translateX(4px);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-gold{background:var(--gold);color:#fff;border-color:var(--gold);}
.btn-gold:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-sm{padding:10px 18px;font-size:14px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:rgba(247,246,243,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:0 8px 28px -20px rgba(20,22,27,.45);}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height var(--t);
}
.site-header.is-scrolled .nav-wrap{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:16px;height:16px;flex:0 0 16px;
  background:linear-gradient(135deg,var(--gold),var(--gold-soft));
  transform:rotate(45deg);
  border-radius:4px;
  box-shadow:inset 0 0 0 1px rgba(20,22,27,.16);
}
.brand-text{font-size:18px;letter-spacing:-.01em;}
.nav-main{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  padding:6px 0;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--gold);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--ink);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;}
.search-wrap{display:flex;align-items:center;gap:8px;}
.search-toggle{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--ink);
  cursor:pointer;
  transition:all var(--t);
}
.search-toggle:hover{border-color:var(--gold-soft);color:var(--gold);}
.search-input{
  width:0;opacity:0;
  padding:0;border:1px solid var(--line);border-radius:10px;
  height:38px;font-size:14px;
  background:#fff;color:var(--ink);
  transition:width var(--t),opacity var(--t),padding var(--t);
}
.search-wrap.is-open .search-input{width:190px;opacity:1;padding:0 14px;}
.nav-cta{padding:11px 22px;border-radius:999px;font-size:14.5px;}
.nav-burger{
  display:none;
  width:38px;height:38px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  position:relative;
  cursor:pointer;
}
.nav-burger span{
  position:absolute;left:11px;right:11px;height:1.8px;
  background:var(--ink);border-radius:2px;
  transition:transform var(--t),opacity var(--t);
}
.nav-burger span:nth-child(1){top:15px;}
.nav-burger span:nth-child(2){top:21px;}
body.nav-open .nav-burger span:nth-child(1){transform:translateY(3px) rotate(45deg);}
body.nav-open .nav-burger span:nth-child(2){transform:translateY(-3px) rotate(-45deg);}

/* ============ 文章头 ============ */
.post-hero{
  position:relative;
  padding:52px 0 56px;
  color:#fff;
  background:
    linear-gradient(180deg,rgba(20,22,27,.93),rgba(20,22,27,.84)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  overflow:hidden;
}
.post-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:46px 46px;
  pointer-events:none;
}
.post-hero .container{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.66);margin-bottom:22px;}
.crumb a{color:rgba(255,255,255,.72);}
.crumb a:hover{color:var(--gold-soft);}
.crumb .sep{opacity:.5;}
.crumb .now{color:rgba(255,255,255,.92);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.post-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.1em;
  color:var(--gold-soft);
  border:1px solid rgba(216,185,120,.42);
  background:rgba(176,129,47,.12);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:18px;
}
.post-title{
  font-size:clamp(1.75rem,4vw,2.85rem);
  line-height:1.16;
  font-weight:900;
  letter-spacing:-.03em;
  color:#fff;
  max-width:920px;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:26px;
  font-size:14px;
  color:rgba(255,255,255,.7);
}
.post-meta i{color:var(--gold-soft);margin-right:6px;}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(216,185,120,.8);display:inline-block;}

/* ============ 主体布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 240px;
  gap:56px;
  align-items:start;
  padding:64px 0 8px;
}
.post-body{min-width:0;}
.lead{
  font-size:17.5px;
  line-height:1.95;
  color:var(--ink-2);
  background:#fff;
  border:1px solid var(--line);
  border-left:3px solid var(--gold);
  border-radius:0 var(--radius) var(--radius) 0;
  padding:20px 24px;
  margin-bottom:36px;
  box-shadow:var(--shadow-1);
}
.article-body{font-size:17px;line-height:1.95;color:var(--text);}
.article-body h2{
  position:relative;
  font-size:clamp(1.3rem,2.2vw,1.7rem);
  font-weight:800;
  color:var(--ink);
  margin:2.4em 0 .8em;
  padding-left:18px;
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";
  position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  background:var(--gold);border-radius:2px;
}
.article-body h3{
  font-size:1.2rem;
  font-weight:700;
  color:var(--ink);
  margin:2em 0 .6em;
  scroll-margin-top:96px;
}
.article-body p{margin:0 0 1.25em;}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.4em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.55em;}
.article-body li::marker{color:var(--gold);}
.article-body strong{color:var(--ink);font-weight:700;}
.article-body img{border-radius:var(--radius);margin:1.8em 0;box-shadow:var(--shadow-2);}
.article-body blockquote{
  margin:1.8em 0;
  padding:18px 24px;
  background:#fff;
  border-left:3px solid var(--gold);
  border-radius:0 12px 12px 0;
  color:var(--ink-2);
  box-shadow:var(--shadow-1);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:15px;
  font-variant-numeric:tabular-nums;
  background:#fff;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
}
.article-body th{font-weight:700;color:var(--ink);background:rgba(176,129,47,.05);}
.article-body a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--gold);}
.article-body code{
  background:#fff;border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;font-size:.9em;color:var(--ink-2);
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}

/* ============ 空态 ============ */
.empty-state{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:56px 32px;
  text-align:center;
  box-shadow:var(--shadow-1);
}
.empty-state h2{font-size:1.4rem;margin-bottom:12px;}
.empty-state p{color:var(--muted);max-width:520px;margin:0 auto 24px;}

/* ============ 目录 ============ */
.toc-card{
  position:sticky;
  top:96px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px 16px;
  box-shadow:var(--shadow-1);
}
.toc-title{
  font-size:12.5px;
  letter-spacing:.14em;
  font-weight:700;
  color:var(--muted);
  margin:0 0 12px;
  padding-left:10px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:62vh;overflow:auto;}
.toc-link{
  display:block;
  font-size:14px;
  line-height:1.55;
  color:var(--muted);
  padding:8px 10px;
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  transition:all var(--t);
}
.toc-link:hover{color:var(--ink);background:var(--bg);}
.toc-link.is-sub{padding-left:22px;font-size:13px;}
.toc-link.active{
  color:var(--ink);
  font-weight:600;
  border-left-color:var(--gold);
  background:rgba(176,129,47,.06);
}

/* ============ 标签与分享 ============ */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:44px;padding-top:28px;border-top:1px solid var(--line);
}
.tag{
  font-size:12.5px;letter-spacing:.08em;
  color:var(--ink-2);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  padding:7px 13px;
  transition:all var(--t);
}
.tag:hover{border-color:var(--gold-soft);color:var(--gold);transform:translateY(-2px);}
.share-row{display:flex;align-items:center;gap:12px;margin-left:auto;}
.share-label{font-size:13px;color:var(--muted);}
.share-btn{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--ink-2);cursor:pointer;
  transition:all var(--t);
}
.share-btn:hover{border-color:var(--gold-soft);color:var(--gold);transform:translateY(-2px);}

/* ============ 上下篇 ============ */
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:44px;}
.pn-card{
  display:block;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:var(--shadow-1);
  transition:all var(--t);
}
.pn-card:hover{
  transform:translateY(-4px);
  border-color:var(--gold-soft);
  box-shadow:var(--shadow-2);
}
.pn-label{font-size:12.5px;letter-spacing:.12em;color:var(--muted);display:flex;align-items:center;gap:8px;}
.pn-title{font-size:16px;font-weight:700;color:var(--ink);line-height:1.6;margin-top:10px;}
.pn-card.next{text-align:right;}
.pn-card.next .pn-label{justify-content:flex-end;}

/* ============ 相关推荐 ============ */
.rel-section{padding:72px 0 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap;}
.sec-head h2{
  font-size:clamp(1.4rem,2.4vw,1.9rem);
  position:relative;
  padding-left:18px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  background:var(--gold);border-radius:2px;
}
.sec-head .sub{font-size:14.5px;color:var(--muted);margin-top:8px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
.rel-card{
  display:flex;flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:all var(--t);
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--gold-soft);box-shadow:var(--shadow-2);}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--ink);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.2,.7,.2,1);}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-cat{
  position:absolute;left:12px;top:12px;
  font-size:12px;letter-spacing:.08em;
  color:#fff;background:rgba(20,22,27,.78);
  border-radius:var(--radius-sm);
  padding:5px 10px;
}
.rel-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.rel-body h3{
  font-size:16.5px;
  font-weight:700;
  line-height:1.55;
  margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-body p{
  font-size:14.5px;
  color:var(--muted);
  line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:16px;
}
.rel-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
  padding-top:14px;border-top:1px solid var(--line);
}
.rel-foot .more{color:var(--ink);font-weight:600;}
.rel-card:hover .rel-foot .more{color:var(--gold);}

/* ============ CTA ============ */
.cta-strip{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--ink);
  color:#fff;
  border-radius:var(--radius-lg);
  padding:38px 40px;
  margin:80px 0 0;
  overflow:hidden;
}
.cta-strip::after{
  content:"";
  position:absolute;
  right:-70px;top:-70px;
  width:220px;height:220px;
  border:1px solid rgba(216,185,120,.35);
  transform:rotate(45deg);
  pointer-events:none;
}
.cta-strip h2{color:#fff;font-size:clamp(1.3rem,2.2vw,1.75rem);margin-bottom:8px;}
.cta-strip p{color:rgba(255,255,255,.74);margin:0;font-size:15px;}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;position:relative;z-index:2;}
.link-gold{color:var(--gold-soft);text-decoration:underline;text-underline-offset:3px;font-size:15px;}
.link-gold:hover{color:#fff;}

.back-links{
  display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  margin:36px 0 0;
  font-size:14.5px;
  color:var(--muted);
}
.back-links a{font-weight:600;border-bottom:1px solid var(--line);padding-bottom:2px;}
.back-links a:hover{border-color:var(--gold);color:var(--gold);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
  font-size:14.5px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.site-footer .brand{color:#fff;margin-bottom:16px;}
.site-footer .brand:hover{color:#fff;}
.site-footer .brand-text{color:#fff;}
.foot-brand p{color:rgba(255,255,255,.6);max-width:300px;line-height:1.85;margin:0;}
.foot-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:.02em;}
.foot-col ul{display:flex;flex-direction:column;gap:12px;}
.foot-col a{color:rgba(255,255,255,.72);}
.foot-col a:hover{color:var(--gold-soft);text-decoration:underline;text-underline-offset:3px;}
.foot-contact li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.72);}
.foot-contact i{color:var(--gold-soft);margin-top:5px;}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding-top:24px;
  font-size:13.5px;
  color:rgba(255,255,255,.55);
}
.foot-qr{display:flex;align-items:center;gap:12px;}
.qr-box{
  width:52px;height:52px;border-radius:8px;
  background:
    repeating-linear-gradient(45deg,rgba(255,255,255,.14) 0 4px,rgba(255,255,255,.04) 4px 8px),
    rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.2,1);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:40px;}
}
@media (max-width:991.98px){
  .nav-main{
    position:fixed;
    inset:0;
    z-index:1030;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:88px 24px 120px;
    background:var(--bg);
    transform:translateX(100%);
    transition:transform .28s cubic-bezier(.2,.7,.2,1);
    overflow-y:auto;
  }
  body.nav-open .nav-main{transform:translateX(0);}
  body.nav-open{overflow:hidden;}
  .nav-link{font-size:18px;font-weight:600;padding:18px 0;border-bottom:1px solid var(--line);}
  .nav-link::after{display:none;}
  .nav-main::after{
    content:"";
    display:block;
    margin-top:32px;
    height:0;
  }
  .nav-burger{display:block;}
  .nav-cta{display:none;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:48px;}
  .toc-card{display:none;}
  .post-hero{padding:40px 0 44px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-strip{padding:30px 26px;}
}
@media (max-width:767.98px){
  .container{padding:0 18px;}
  .nav-wrap{height:64px;gap:12px;}
  .search-wrap.is-open .search-input{width:130px;}
  .post-meta{gap:10px;font-size:13.5px;margin-top:20px;}
  .meta-dot{display:none;}
  .post-meta .meta-item{width:100%;}
  .article-body{font-size:16.5px;}
  .lead{padding:16px 18px;font-size:16px;}
  .pn-grid{grid-template-columns:1fr;}
  .pn-card.next{text-align:left;}
  .pn-card.next .pn-label{justify-content:flex-start;}
  .rel-grid{grid-template-columns:1fr;gap:20px;}
  .rel-section{padding-top:56px;}
  .cta-strip{margin-top:60px;padding:28px 22px;}
  .share-row{margin-left:0;width:100%;margin-top:8px;}
  .tag-row{gap:8px;}
  .site-footer{margin-top:72px;padding:48px 0 24px;}
  .foot-grid{grid-template-columns:1fr;gap:30px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:16px;}
}
@media (max-width:519.98px){
  .post-title{font-size:1.55rem;}
  .search-wrap{display:none;}
  .empty-state{padding:40px 20px;}
  .btn-x{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn-x{width:100%;}
}

/* roulang page: category1 */
:root{
  --ink:#14161B;
  --ink-2:#2A2E36;
  --body:#3A3F47;
  --muted:#6A7079;
  --line:#E4E1DA;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --gold:#B0812F;
  --gold-2:#D8B978;
  --cyan:#23BFA9;
  --l1:#6B7280;
  --l2:#23BFA9;
  --l3:#B0812F;
  --radius-s:8px;
  --radius-m:12px;
  --radius-l:16px;
  --radius-xl:20px;
  --shadow-1:0 1px 2px rgba(20,22,27,.04);
  --shadow-2:0 8px 24px -12px rgba(20,22,27,.12);
  --shadow-3:0 18px 44px -20px rgba(20,22,27,.24);
  --ease:cubic-bezier(.2,.7,.2,1);
  --bs-primary:#14161B;
  --bs-body-color:#3A3F47;
  --bs-border-radius:12px;
  --bs-link-color:#B0812F;
  --bs-link-hover-color:#14161B;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-body-font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-body-bg:#F7F6F3;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--gold);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--ink);margin:0;letter-spacing:-.02em;}
p{margin:0 0 1.25em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px;}
.container,.container-lg,.container-xl{max-width:1240px;padding-left:20px;padding-right:20px;}
@media (min-width:1400px){.container{max-width:1320px;}}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,246,243,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:height .22s var(--ease),box-shadow .22s var(--ease);
  height:72px;
}
.site-header.scrolled{height:64px;box-shadow:var(--shadow-2);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:100%;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:18px;letter-spacing:-.01em;white-space:nowrap;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:16px;height:16px;flex:0 0 16px;
  background:linear-gradient(135deg,var(--gold-2),var(--gold));
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
  box-shadow:0 0 0 3px rgba(176,129,47,.12);
}
.brand-text{font-weight:800;}
.nav-main{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--gold);transition:width .22s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.active{font-weight:700;color:var(--ink);}
.nav-link.active::after{width:22px;}
.nav-right{display:flex;align-items:center;gap:14px;}
.search-toggle{
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--line);background:transparent;color:var(--ink-2);
  display:inline-flex;align-items:center;justify-content:center;
  transition:.18s var(--ease);
}
.search-toggle:hover{border-color:var(--gold-2);color:var(--gold);}
.nav-burger{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  background:transparent;position:relative;
}
.nav-burger span{
  position:absolute;left:11px;right:11px;height:2px;background:var(--ink);
  transition:.22s var(--ease);
}
.nav-burger span:first-child{top:14px;}
.nav-burger span:last-child{top:22px;}
.nav-burger.open span:first-child{top:18px;transform:rotate(45deg);}
.nav-burger.open span:last-child{top:18px;transform:rotate(-45deg);}

/* 移动抽屉 */
.m-drawer{
  position:fixed;inset:0;z-index:2000;background:var(--bg);
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:20px;
}
.m-drawer.open{transform:translateX(0);}
.m-drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);}
.m-drawer-close{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  background:transparent;color:var(--ink);font-size:18px;
}
.m-drawer nav{display:flex;flex-direction:column;padding-top:10px;flex:1;overflow:auto;}
.m-drawer nav a{
  font-size:18px;font-weight:600;color:var(--ink);padding:16px 0;border-bottom:1px solid var(--line);
}
.m-drawer nav a.active{color:var(--gold);}
.m-drawer-foot{padding-top:16px;}
body.no-scroll{overflow:hidden;}

/* ============ 按钮 ============ */
.btn-x{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-m);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:all .18s var(--ease);
}
.btn-x i{transition:transform .18s var(--ease);font-size:13px;}
.btn-x:hover i{transform:translateX(4px);}
.btn-ink{background:var(--ink);color:#fff;}
.btn-ink:hover{background:var(--ink);color:#fff;border-color:var(--gold-2);box-shadow:var(--shadow-2);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-gold{background:var(--gold);color:#14161B;font-weight:700;}
.btn-gold:hover{background:#fff;color:var(--ink);border-color:var(--gold);}
.btn-line{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-line:hover{border-color:var(--gold);color:var(--gold);}
.btn-sm-x{padding:9px 18px;font-size:14px;}
.nav-cta{padding:10px 20px;font-size:14px;border-radius:999px;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.sec-head{margin-bottom:44px;max-width:760px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--gold);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--gold);display:block;}
h2.sec-title{font-size:clamp(1.5rem,2.6vw,2.25rem);font-weight:800;line-height:1.2;}
.sec-sub{margin-top:14px;color:var(--muted);font-size:16px;}

/* ============ 分类页头图 ============ */
.cat-hero{
  position:relative;
  min-height:340px;
  display:flex;align-items:flex-end;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,22,27,.55) 0%,rgba(20,22,27,.82) 100%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.35) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:48px 48px;
}
.cat-hero .container{position:relative;z-index:2;padding-top:56px;padding-bottom:52px;}
.breadcrumb-x{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:18px;letter-spacing:.04em;}
.breadcrumb-x a{color:rgba(255,255,255,.72);}
.breadcrumb-x a:hover{color:var(--gold-2);}
.breadcrumb-x .sep{opacity:.5;}
.cat-hero h1{
  color:#fff;font-size:clamp(2rem,4.4vw,3.25rem);line-height:1.1;font-weight:900;letter-spacing:-.03em;
  max-width:16em;
}
.cat-hero .hero-lead{
  color:rgba(255,255,255,.82);font-size:17px;max-width:62ch;margin-top:18px;margin-bottom:0;
}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.24);
  color:#fff;font-size:13px;font-weight:500;letter-spacing:.03em;
}
.chip i{color:var(--gold-2);font-size:12px;}

/* ============ 对比表 ============ */
.cmp-shell{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-xl);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.cmp-table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums;}
.cmp-table thead th{
  position:sticky;top:64px;z-index:5;
  background:#FBFAF8;
  padding:20px 22px;text-align:left;
  font-size:14px;font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--line);
  letter-spacing:.02em;
}
.cmp-table thead th.col-tier{text-align:center;min-width:150px;}
.cmp-table thead th.is-rec{background:rgba(176,129,47,.06);box-shadow:inset 0 2px 0 var(--gold);}
.tier-name{display:block;font-size:15px;font-weight:800;color:var(--ink);}
.tier-sub{display:block;font-size:12px;font-weight:500;color:var(--muted);margin-top:2px;letter-spacing:.06em;}
.badge-rec{
  display:inline-block;margin-top:8px;padding:3px 10px;border-radius:999px;
  background:var(--gold);color:#14161B;font-size:11px;font-weight:700;letter-spacing:.06em;
}
.cmp-table tbody th{
  text-align:left;font-weight:600;font-size:15px;color:var(--ink-2);
  padding:20px 22px;border-bottom:1px solid var(--line);background:#fff;
}
.cmp-table tbody td{
  padding:20px 22px;border-bottom:1px solid var(--line);text-align:center;font-size:14px;color:var(--body);
}
.cmp-table tbody tr:last-child th,.cmp-table tbody tr:last-child td{border-bottom:none;}
.cmp-table tbody tr:hover th,.cmp-table tbody tr:hover td{background:#FCFBF8;}
.cmp-table tbody tr:hover td.is-rec{background:rgba(176,129,47,.09);}
.cmp-table td.is-rec{background:rgba(176,129,47,.05);}
.mark-yes{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;border:1.5px solid var(--cyan);position:relative;}
.mark-yes::after{content:"";width:7px;height:4px;border-left:1.5px solid var(--cyan);border-bottom:1.5px solid var(--cyan);transform:rotate(-45deg) translate(1px,-1px);}
.mark-no{display:inline-block;width:14px;height:1.5px;background:#9AA0A8;vertical-align:middle;}
.mark-text{font-size:13px;color:var(--muted);font-weight:500;}
.cmp-foot{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  padding:22px 26px;background:#FBFAF8;border-top:1px solid var(--line);
}
.cmp-foot p{margin:0;font-size:14px;color:var(--muted);max-width:60ch;}

/* 移动端对比卡 */
.cmp-mobile{display:none;}
.seg-tabs{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;margin-bottom:20px;}
.seg-btn{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  font-size:13px;font-weight:600;transition:.18s var(--ease);
}
.seg-btn:hover{border-color:var(--gold-2);color:var(--gold);}
.seg-btn.active{background:var(--ink);color:#fff;border-color:var(--ink);}
.m-tier-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:22px;box-shadow:var(--shadow-1);
}
.m-tier-card + .m-tier-card{margin-top:16px;}
.m-tier-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:6px;}
.m-tier-head .t{font-size:17px;font-weight:800;color:var(--ink);}
.tier-bar{height:4px;width:44px;border-radius:999px;}
.tb-l1{background:var(--l1);} .tb-l2{background:var(--l2);} .tb-l3{background:var(--l3);} .tb-l4{background:linear-gradient(90deg,var(--ink) 55%,var(--gold));}
.m-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px dashed var(--line);font-size:14px;}
.m-row:last-child{border-bottom:none;}
.m-row .n{color:var(--ink-2);font-weight:500;}
.m-row .v{color:var(--muted);font-size:13px;}

/* ============ 双栏图文 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split-media{position:relative;border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-2);}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .4s var(--ease);}
.split-media:hover img{transform:scale(1.03);}
.split-media .media-tag{
  position:absolute;left:18px;top:18px;
  padding:6px 14px;border-radius:999px;background:rgba(20,22,27,.78);color:#fff;font-size:12px;letter-spacing:.06em;
}
.point-list{margin-top:26px;}
.point-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
}
.point-list li:last-child{border-bottom:none;}
.point-list .pico{
  flex:0 0 34px;height:34px;border-radius:10px;
  background:rgba(176,129,47,.10);color:var(--gold);
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;
}
.point-list h3{font-size:16px;font-weight:700;margin-bottom:4px;}
.point-list p{font-size:14px;color:var(--muted);margin:0;line-height:1.8;}

/* ============ 数据条 ============ */
.stats-strip{
  background:var(--ink);border-radius:var(--radius-xl);
  padding:48px 40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
  position:relative;overflow:hidden;
}
.stats-strip::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  background:linear-gradient(135deg,rgba(176,129,47,.28),transparent 65%);
  transform:rotate(20deg);
}
.stat-item{position:relative;z-index:2;}
.stat-num{
  font-size:clamp(1.75rem,3vw,2.5rem);font-weight:900;color:#fff;line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-.03em;
}
.stat-num span{font-size:1rem;font-weight:600;color:var(--gold-2);margin-left:4px;}
.stat-label{margin-top:10px;font-size:14px;color:rgba(255,255,255,.66);}

/* ============ 场景卡 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  display:flex;flex-direction:column;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:var(--gold-2);}
.scene-card .thumb{overflow:hidden;aspect-ratio:16/10;background:var(--ink);}
.scene-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.scene-card:hover .thumb img{transform:scale(1.03);}
.scene-body{padding:24px;display:flex;flex-direction:column;flex:1;}
.scene-body .tag{
  align-self:flex-start;font-size:12px;letter-spacing:.08em;font-weight:700;
  color:var(--gold);background:rgba(176,129,47,.10);padding:5px 12px;border-radius:8px;margin-bottom:14px;
}
.scene-body h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.scene-body p{font-size:14px;color:var(--muted);line-height:1.85;margin-bottom:16px;}
.scene-body .more{margin-top:auto;font-size:14px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:8px;}
.scene-body .more:hover{color:var(--gold);}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;counter-reset:step;}
.step-item{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-l);padding:32px 26px 28px;box-shadow:var(--shadow-1);
  transition:.2s var(--ease);
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:var(--gold-2);}
.step-no{
  font-size:34px;font-weight:900;color:var(--line);line-height:1;letter-spacing:-.04em;
  font-variant-numeric:tabular-nums;margin-bottom:16px;display:block;
}
.step-item h3{font-size:17px;font-weight:700;margin-bottom:10px;}
.step-item p{font-size:14px;color:var(--muted);margin:0;line-height:1.85;}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;}
.faq-list .accordion-item{border:none;background:transparent;border-bottom:1px solid var(--line);}
.faq-list .accordion-item:first-child{border-top:1px solid var(--line);}
.faq-list .accordion-button{
  background:transparent;border:none;box-shadow:none;
  padding:22px 44px 22px 0;
  font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.6;
  position:relative;
}
.faq-list .accordion-button:not(.collapsed){color:var(--ink);background:transparent;box-shadow:none;}
.faq-list .accordion-button:focus{box-shadow:none;outline:2px solid var(--cyan);outline-offset:-2px;}
.faq-list .accordion-button::after{
  content:"+";position:absolute;right:8px;top:50%;
  transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--gold);
  background-image:none;width:auto;height:auto;line-height:1;
  transition:transform .22s var(--ease);
}
.faq-list .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg);}
.faq-list .accordion-body{padding:0 44px 24px 0;font-size:15px;color:var(--muted);line-height:1.9;}

/* ============ 底部开通细条 ============ */
.join-strip{
  background:var(--ink);border-radius:var(--radius-xl);
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.join-strip::after{
  content:"";position:absolute;right:-40px;bottom:-80px;width:220px;height:220px;
  background:linear-gradient(135deg,rgba(216,185,120,.30),transparent 70%);
  transform:rotate(35deg);
}
.join-strip .jt{position:relative;z-index:2;}
.join-strip h2{color:#fff;font-size:clamp(1.25rem,2.2vw,1.75rem);font-weight:800;letter-spacing:-.02em;}
.join-strip p{color:rgba(255,255,255,.68);font-size:14.5px;margin:8px 0 0;}
.join-strip .actions{position:relative;z-index:2;display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.join-strip .link-text{color:rgba(255,255,255,.78);font-size:14px;text-decoration:underline;text-underline-offset:4px;}
.join-strip .link-text:hover{color:var(--gold-2);}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.66);padding:72px 0 30px;margin-top:96px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);}
.foot-brand .brand{color:#fff;}
.foot-brand .brand-text{color:#fff;}
.foot-brand p{margin-top:16px;font-size:14px;line-height:1.85;max-width:30ch;}
.foot-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;}
.foot-col ul li{margin-bottom:11px;}
.foot-col ul li a{font-size:14px;color:rgba(255,255,255,.66);}
.foot-col ul li a:hover{color:var(--gold-2);text-decoration:underline;text-underline-offset:4px;}
.foot-contact li{display:flex;gap:10px;font-size:14px;align-items:flex-start;line-height:1.7;}
.foot-contact i{color:var(--gold-2);margin-top:5px;font-size:13px;}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:26px;flex-wrap:wrap;font-size:13px;}
.foot-qr{display:flex;align-items:center;gap:12px;}
.qr-box{
  width:52px;height:52px;border-radius:8px;
  background-image:linear-gradient(45deg,rgba(255,255,255,.35) 25%,transparent 25%,transparent 75%,rgba(255,255,255,.35) 75%),linear-gradient(45deg,rgba(255,255,255,.35) 25%,transparent 25%,transparent 75%,rgba(255,255,255,.35) 75%);
  background-size:10px 10px;background-position:0 0,5px 5px;
  background-color:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.18);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-main{gap:22px;}
  .nav-link{font-size:14px;}
  .split{gap:40px;}
  .stats-strip{padding:40px 30px;gap:24px;}
}
@media (max-width:991.98px){
  .nav-main,.nav-cta{display:none;}
  .nav-burger{display:block;}
  .site-header{height:60px;}
  .site-header.scrolled{height:60px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .split{grid-template-columns:1fr;gap:32px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr;gap:18px;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .stats-strip{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cmp-table thead th{position:static;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .cat-hero{min-height:300px;}
  .cat-hero h1{font-size:clamp(1.75rem,7vw,2.25rem);}
  .cat-hero .hero-lead{font-size:15px;}
  .cmp-shell{display:none;}
  .cmp-mobile{display:block;}
  .grid-3{grid-template-columns:1fr;}
  .join-strip{padding:28px 22px;}
  .stats-strip{padding:32px 22px;grid-template-columns:1fr 1fr;gap:22px;}
  .section{padding:56px 0;}
  .sec-head{margin-bottom:32px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:519.98px){
  .hero-chips{gap:8px;}
  .chip{font-size:12px;padding:7px 12px;}
  .stats-strip{grid-template-columns:1fr;}
  .join-strip .actions{width:100%;}
  .join-strip .actions .btn-x{width:100%;justify-content:center;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#14161B;
  --ink-2:#2A2E36;
  --text:#3A3F47;
  --muted:#6A7079;
  --line:#E4E1DA;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --gold:#B0812F;
  --gold-soft:#D8B978;
  --cyan:#23BFA9;
  --l1:#6B7280;
  --l2:#23BFA9;
  --l3:#B0812F;
  --l4:#14161B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --sh-1:0 1px 2px rgba(20,22,27,.04);
  --sh-2:0 8px 24px -12px rgba(20,22,27,.12);
  --ease:cubic-bezier(.2,.7,.2,1);
  --bs-primary:#B0812F;
  --bs-body-color:#3A3F47;
  --bs-border-radius:16px;
  --bs-link-color:#3A3F47;
  --bs-link-hover-color:#B0812F;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--text);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--gold);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:800;letter-spacing:-.01em;}
p{margin:0 0 1.25em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (min-width:1400px){.container{max-width:1320px;}}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 26px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn-x i{transition:transform .18s var(--ease);}
.btn-x:hover i{transform:translateX(4px);}
.btn-ink{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-ink:hover{background:var(--ink);color:#fff;border-color:var(--gold-soft);}
.btn-line{background:#fff;color:var(--ink);border-color:var(--ink);}
.btn-line:hover{background:var(--ink);color:#fff;}
.btn-gold{background:var(--gold);color:var(--ink);border-color:var(--gold);font-weight:700;}
.btn-gold:hover{background:var(--ink);color:var(--gold-soft);border-color:var(--gold-soft);}
.btn-text{color:var(--ink);font-weight:600;border-bottom:1px solid var(--line);padding-bottom:2px;}
.btn-text:hover{border-color:var(--gold);color:var(--gold);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(247,246,243,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:height .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;}
.site-header.scrolled .nav-wrap{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:22px;height:22px;flex:0 0 22px;
  background:var(--ink);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;
  background:var(--gold);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
}
.brand-text{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-.02em;}
.nav-main{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--gold);transition:width .2s var(--ease);
}
.nav-link:hover::after{width:100%;}
.nav-link.active{color:var(--ink);font-weight:600;}
.nav-link.active::after{width:24px;background:var(--gold);}
.nav-right{display:flex;align-items:center;gap:14px;}
.search-toggle{
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.search-toggle:hover{border-color:var(--gold-soft);color:var(--gold);}
.nav-cta{padding:11px 22px;font-size:14px;}
.nav-burger{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;position:relative;
}
.nav-burger span{
  position:absolute;left:11px;right:11px;height:2px;background:var(--ink);
  transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.nav-burger span:first-child{top:15px;}
.nav-burger span:last-child{top:23px;}
body.nav-open .nav-burger span:first-child{transform:translateY(4px) rotate(45deg);}
body.nav-open .nav-burger span:last-child{transform:translateY(-4px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;
  min-height:360px;
  display:flex;align-items:flex-end;
  padding:72px 0 56px;
  color:#fff;
  background-image:
    linear-gradient(180deg,rgba(20,22,27,.55),rgba(20,22,27,.82)),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero-cat::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.6;
}
.hero-cat .container{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:22px;}
.crumb a{color:rgba(255,255,255,.72);}
.crumb a:hover{color:var(--gold-soft);}
.crumb span.sep{color:rgba(255,255,255,.36);}
.hero-cat h1{
  color:#fff;
  font-size:clamp(2rem,4.6vw,3.5rem);
  line-height:1.08;font-weight:900;letter-spacing:-.03em;
  max-width:18ch;
}
.hero-cat .lead{
  margin-top:20px;max-width:56ch;
  font-size:16px;line-height:1.9;color:rgba(255,255,255,.82);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-tags span{
  font-size:13px;letter-spacing:.08em;color:rgba(255,255,255,.9);
  border:1px solid rgba(216,185,120,.5);
  border-radius:999px;padding:6px 16px;
  background:rgba(255,255,255,.05);
}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:760px;margin-bottom:48px;}
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.14em;color:var(--gold);
  text-transform:uppercase;font-weight:700;margin-bottom:16px;
}
.kicker::before{content:"";width:24px;height:2px;background:var(--gold);display:inline-block;}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;font-weight:800;}
.sec-head p{margin-top:16px;color:var(--muted);font-size:16px;}

/* ---------- 编号阶梯 ---------- */
.ladder{border-top:1px solid var(--line);}
.ladder-item{
  display:grid;grid-template-columns:150px 1fr;
  gap:32px;align-items:start;
  padding:38px 24px 38px 24px;
  border-bottom:1px solid var(--line);
  position:relative;background:transparent;
  transition:background .2s var(--ease);
}
.ladder-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--tier-color,var(--gold));
  transform:scaleY(0);transform-origin:top;
  transition:transform .24s var(--ease);
}
.ladder-item:hover{background:#fff;}
.ladder-item:hover::before{transform:scaleY(1);}
.ladder-num{
  font-size:clamp(2.5rem,5vw,3.75rem);font-weight:900;line-height:1;
  color:var(--ink);letter-spacing:-.04em;font-variant-numeric:tabular-nums;
  display:flex;flex-direction:column;gap:8px;
}
.ladder-num small{
  font-size:13px;font-weight:600;letter-spacing:.1em;
  color:var(--tier-color,var(--gold));
}
.ladder-body h3{font-size:1.25rem;font-weight:800;margin-bottom:10px;}
.ladder-body .one-line{color:var(--muted);font-size:15px;margin-bottom:16px;}
.ladder-body ul{display:flex;flex-wrap:wrap;gap:10px;}
.ladder-body li{
  font-size:13px;color:var(--ink-2);
  border:1px solid var(--line);background:var(--bg);
  border-radius:999px;padding:6px 14px;
}

/* ---------- 等级色卡 ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.tier-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:0 0 28px;
  overflow:hidden;
  box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.tier-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--gold-soft);}
.tier-bar{height:6px;background:var(--tier-color);}
.tier-card .tier-inner{padding:28px 24px 0;}
.tier-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--tier-color);
  border:1px solid currentColor;border-radius:var(--r-sm);
  padding:4px 10px;margin-bottom:16px;
}
.tier-card h3{font-size:1.25rem;margin-bottom:8px;}
.tier-card .tier-desc{font-size:14px;color:var(--muted);min-height:52px;margin-bottom:18px;}
.tier-card ul{display:flex;flex-direction:column;gap:10px;border-top:1px solid var(--line);padding-top:18px;}
.tier-card li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.tier-card li i{color:var(--cyan);font-size:12px;margin-top:7px;flex:0 0 12px;}
.tier-card li.off{color:#9AA0A8;}
.tier-card li.off i{color:#9AA0A8;}
.tier-card .tier-foot{margin-top:auto;padding:22px 24px 0;}
.tier-card.tier-4{background:var(--ink);border-color:var(--ink);}
.tier-card.tier-4 h3,.tier-card.tier-4 .tier-badge{color:#fff;}
.tier-card.tier-4 .tier-badge{color:var(--gold-soft);}
.tier-card.tier-4 .tier-desc{color:rgba(255,255,255,.6);}
.tier-card.tier-4 ul{border-top-color:rgba(255,255,255,.14);}
.tier-card.tier-4 li{color:rgba(255,255,255,.85);}
.tier-card.tier-4 .tier-bar{background:linear-gradient(90deg,var(--gold),var(--gold-soft));}

/* ---------- 折线路径 ---------- */
.path-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  padding:40px 36px 28px;box-shadow:var(--sh-1);
}
.path-chart svg{width:100%;height:auto;display:block;}
.path-line{
  fill:none;stroke:var(--gold);stroke-width:3;
  stroke-linecap:round;stroke-linejoin:round;
  stroke-dasharray:1200;stroke-dashoffset:1200;
  transition:stroke-dashoffset 1.2s var(--ease);
}
.path-wrap.is-visible .path-line{stroke-dashoffset:0;}
.path-node{fill:#fff;stroke:var(--gold);stroke-width:3;}
.path-node-core{fill:var(--ink);}
.path-label{font-size:15px;font-weight:700;fill:var(--ink);font-family:"Noto Sans SC",system-ui,sans-serif;}
.path-sub{font-size:12.5px;fill:#6A7079;font-family:"Noto Sans SC",system-ui,sans-serif;}
.path-grid{stroke:var(--line);stroke-width:1;stroke-dasharray:4 6;}
.path-legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.path-legend span{
  font-size:13px;color:var(--muted);
  display:inline-flex;align-items:center;gap:8px;
}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block;}

/* ---------- 图文双栏 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split-media{
  border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-2);aspect-ratio:16/10;
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.split-media:hover img{transform:scale(1.03);}
.split-body h2{font-size:clamp(1.5rem,2.6vw,2.125rem);margin-bottom:18px;}
.split-body p{color:var(--muted);}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px;}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;box-shadow:var(--sh-1);}
.stat b{display:block;font-size:1.75rem;font-weight:900;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.stat span{font-size:13px;color:var(--muted);}

/* ---------- 差异表 ---------- */
.diff-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);overflow:hidden;}
.diff-table th,.diff-table td{
  padding:20px 22px;font-size:15px;text-align:left;
  border-bottom:1px solid var(--line);vertical-align:middle;
}
.diff-table thead th{
  font-size:13px;letter-spacing:.08em;color:var(--muted);font-weight:700;
  background:var(--bg);white-space:nowrap;
}
.diff-table thead th.rec{color:var(--gold);background:rgba(176,129,47,.06);border-top:2px solid var(--gold);}
.diff-table tbody tr{transition:background .18s var(--ease);}
.diff-table tbody tr:hover{background:rgba(176,129,47,.04);}
.diff-table tbody tr:last-child td{border-bottom:none;}
.diff-table td:first-child{font-weight:600;color:var(--ink);}
.cell-yes{display:inline-flex;align-items:center;gap:8px;color:var(--ink-2);font-size:14px;}
.cell-yes .mark{
  width:16px;height:16px;border-radius:50%;border:2px solid var(--cyan);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 16px;
}
.cell-yes .mark::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);}
.cell-no{color:#9AA0A8;font-size:14px;letter-spacing:.1em;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.faq-intro h2{font-size:clamp(1.5rem,2.6vw,2.125rem);line-height:1.2;margin-bottom:16px;}
.faq-intro p{color:var(--muted);font-size:15px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:none;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 4px;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-q i{color:var(--gold);font-size:14px;transition:transform .22s var(--ease);flex:0 0 auto;}
.faq-q[aria-expanded="true"] i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a p{padding:0 4px 24px;color:var(--muted);font-size:15px;line-height:1.9;}

/* ---------- CTA 细条 ---------- */
.cta-strip{
  position:relative;background:var(--ink);color:#fff;
  padding:64px 0;overflow:hidden;
}
.cta-strip::after{
  content:"";position:absolute;right:-80px;top:-120px;width:420px;height:420px;
  background:repeating-linear-gradient(115deg,rgba(216,185,120,.14) 0 2px,transparent 2px 16px);
  transform:rotate(8deg);pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:clamp(1.375rem,2.4vw,1.875rem);margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.66);font-size:15px;margin:0;}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.cta-actions .btn-text{color:rgba(255,255,255,.8);border-color:rgba(255,255,255,.24);}
.cta-actions .btn-text:hover{color:var(--gold-soft);border-color:var(--gold-soft);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 32px;font-size:14px;}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:48px;}
.foot-brand .brand-text{color:#fff;}
.foot-brand p{margin-top:18px;color:rgba(255,255,255,.6);max-width:34ch;font-size:14px;line-height:1.9;}
.foot-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;}
.foot-col ul{display:flex;flex-direction:column;gap:12px;}
.foot-col a{color:rgba(255,255,255,.72);position:relative;}
.foot-col a:hover{color:var(--gold-soft);}
.foot-contact li{display:flex;gap:10px;align-items:flex-start;color:rgba(255,255,255,.72);}
.foot-contact i{color:var(--gold-soft);margin-top:5px;font-size:13px;}
.foot-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  color:rgba(255,255,255,.5);font-size:13px;
}
.foot-qr{display:flex;align-items:center;gap:12px;}
.qr-box{
  width:56px;height:56px;border-radius:var(--r-sm);
  background:
    linear-gradient(rgba(255,255,255,.16),rgba(255,255,255,.16)) center/100% 100% no-repeat,
    repeating-conic-gradient(rgba(255,255,255,.5) 0 25%,transparent 0 50%) 0 0/10px 10px;
  border:1px solid rgba(255,255,255,.18);
}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.fade-up.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .tier-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991.98px){
  .site-header{backdrop-filter:none;-webkit-backdrop-filter:none;background:var(--bg);}
  .nav-main{
    position:fixed;top:60px;left:0;right:0;bottom:0;
    background:var(--bg);
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    padding:16px 24px 120px;
    transform:translateX(100%);opacity:0;visibility:hidden;
    transition:transform .3s var(--ease),opacity .3s var(--ease),visibility .3s var(--ease);
    z-index:55;overflow-y:auto;
  }
  body.nav-open .nav-main{transform:none;opacity:1;visibility:visible;}
  .nav-main .nav-link{font-size:18px;padding:18px 2px;border-bottom:1px solid var(--line);}
  .nav-main .nav-link::after{display:none;}
  .nav-main .nav-link.active{color:var(--gold);}
  .nav-wrap{height:60px;}
  .site-header.scrolled .nav-wrap{height:60px;}
  .nav-burger{display:block;}
  .search-toggle{display:none;}
  .nav-cta{display:none;}
  body.nav-open .nav-cta{
    display:inline-flex;position:fixed;left:24px;right:24px;bottom:24px;
    justify-content:center;z-index:56;
  }
  body.nav-open{overflow:hidden;}
  .section{padding:64px 0;}
  .split{grid-template-columns:1fr;gap:32px;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .ladder-item{grid-template-columns:96px 1fr;gap:20px;padding:28px 16px;}
}
@media (max-width:767.98px){
  .tier-grid{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:1fr;}
  .path-wrap{padding:24px 16px 18px;}
  .diff-table thead{display:none;}
  .diff-table{border:none;background:transparent;}
  .diff-table tr{
    display:block;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-lg);padding:8px 18px;margin-bottom:14px;box-shadow:var(--sh-1);
  }
  .diff-table td{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    border-bottom:1px dashed var(--line);padding:12px 0;font-size:14px;
  }
  .diff-table td:last-child{border-bottom:none;}
  .diff-table td::before{
    content:attr(data-th);color:var(--muted);font-size:13px;font-weight:600;
  }
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .foot-grid{grid-template-columns:1fr;gap:32px;}
  .hero-cat{min-height:300px;padding:48px 0 40px;}
}
@media (max-width:519.98px){
  .container{padding-left:16px;padding-right:16px;}
  .ladder-item{grid-template-columns:1fr;gap:12px;}
  .ladder-num{flex-direction:row;align-items:baseline;gap:12px;}
  .hero-tags span{font-size:12px;padding:5px 12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .fade-up{opacity:1;transform:none;}
  .path-line{stroke-dashoffset:0;}
}

/* roulang page: category3 */
:root{
  --ink:#14161B;
  --ink-2:#2A2E36;
  --body-c:#3A3F47;
  --muted:#6A7079;
  --line:#E4E1DA;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --gold:#B0812F;
  --gold-l:#D8B978;
  --cyan:#23BFA9;
  --l1:#6B7280;
  --l2:#23BFA9;
  --l3:#B0812F;
  --l4:#14161B;
  --radius:16px;
  --radius-lg:20px;
  --radius-sm:8px;
  --radius-btn:12px;
  --sh-1:0 1px 2px rgba(20,22,27,.04);
  --sh-2:0 8px 24px -12px rgba(20,22,27,.12);
  --t:cubic-bezier(.2,.7,.2,1);
  --bs-primary:#B0812F;
  --bs-body-color:#3A3F47;
  --bs-body-bg:#F7F6F3;
  --bs-border-radius:16px;
  --bs-link-color:#3A3F47;
  --bs-link-hover-color:#B0812F;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  background:var(--bg);
  color:var(--body-c);
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--body-c);text-decoration:none;transition:color .18s var(--t)}
a:hover{color:var(--gold)}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--ink);margin:0;letter-spacing:-.02em}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.container{max-width:1320px}}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(247,246,243,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:height .2s var(--t),box-shadow .2s var(--t);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;transition:height .2s var(--t)}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.site-header.is-scrolled .nav-wrap{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:22px;height:22px;flex:none;
  background:linear-gradient(135deg,var(--gold) 0%,var(--gold-l) 55%,var(--ink) 55.5%,var(--ink) 100%);
  transform:rotate(45deg);
  border-radius:4px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);
}
.brand-text{font-size:19px;letter-spacing:-.02em;white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--gold);transition:width .22s var(--t);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.active{font-weight:600;color:var(--ink)}
.nav-link.active::after{width:18px}
.nav-right{display:flex;align-items:center;gap:14px}
.search-toggle{
  width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:50%;
  color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .18s var(--t),color .18s var(--t),transform .18s var(--t);
}
.search-toggle:hover{border-color:var(--gold-l);color:var(--gold);transform:translateY(-1px)}
.btn-x{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 24px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;
  transition:background .18s var(--t),color .18s var(--t),border-color .18s var(--t),transform .18s var(--t);
}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:var(--ink-2);color:#fff;border-color:var(--gold-l)}
.btn-gold{background:var(--gold);color:var(--ink)}
.btn-gold:hover{background:var(--gold-l);color:var(--ink)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-x .arrow{display:inline-block;transition:transform .18s var(--t)}
.btn-x:hover .arrow{transform:translateX(4px)}
.nav-cta{padding:12px 22px;font-size:14.5px}
.nav-burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;
  position:relative;
}
.nav-burger span{
  position:absolute;left:13px;right:13px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--t),opacity .2s var(--t);
}
.nav-burger span:first-child{top:18px}
.nav-burger span:last-child{top:24px}
.nav-burger[aria-expanded="true"] span:first-child{transform:translateY(3px) rotate(45deg)}
.nav-burger[aria-expanded="true"] span:last-child{transform:translateY(-3px) rotate(-45deg)}
.mobile-drawer{
  position:fixed;inset:0;z-index:1050;background:var(--bg);
  padding:0 24px 28px;display:flex;flex-direction:column;
  transform:translateY(-100%);visibility:hidden;
  transition:transform .3s var(--t),visibility .3s var(--t);
}
.mobile-drawer.is-open{transform:translateY(0);visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:60px}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;color:var(--ink)}
.drawer-nav{flex:1;overflow-y:auto;padding-top:8px}
.drawer-nav a{
  display:block;font-size:18px;font-weight:600;color:var(--ink);
  padding:18px 2px;border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--gold)}
.drawer-cta{margin-top:auto;padding-top:20px}
.drawer-cta .btn-x{width:100%;justify-content:center;padding:16px 24px}
body.nav-locked{overflow:hidden}

/* ============ page hero ============ */
.page-hero{
  position:relative;isolation:isolate;overflow:hidden;
  min-height:340px;display:flex;align-items:flex-end;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(rgba(20,22,27,.72),rgba(20,22,27,.66)),
    repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 72px),
    repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 72px);
}
.page-hero .container{padding-top:72px;padding-bottom:52px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:18px}
.crumb a{color:rgba(255,255,255,.72)}
.crumb a:hover{color:var(--gold-l)}
.crumb .sep{opacity:.5}
.page-hero h1{
  color:#fff;
  font-size:clamp(1.9rem,4.2vw,3.15rem);
  line-height:1.1;font-weight:900;letter-spacing:-.03em;
  max-width:920px;
}
.page-hero .hero-lead{
  margin-top:18px;max-width:720px;color:rgba(255,255,255,.82);font-size:16.5px;line-height:1.9;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-tags span{
  font-size:12.5px;letter-spacing:.08em;color:rgba(255,255,255,.86);
  border:1px solid rgba(255,255,255,.3);border-radius:999px;padding:7px 14px;
}

/* ============ section base ============ */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{margin-bottom:44px;max-width:820px}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.14em;color:var(--gold);font-weight:600;margin-bottom:14px;
}
.section-head .kicker::before{content:"";width:24px;height:2px;background:var(--gold);display:inline-block}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;font-weight:800}
.section-head p{margin-top:16px;color:var(--muted);max-width:680px}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ============ filter chips ============ */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:12px;
  padding:22px 0 0;
}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:11px 20px;cursor:pointer;
  transition:border-color .18s var(--t),color .18s var(--t),background .18s var(--t),transform .18s var(--t);
}
.chip:hover{border-color:var(--gold-l);color:var(--gold);transform:translateY(-2px)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
.chip .count{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.chip.is-active .count{color:rgba(255,255,255,.65)}

/* ============ content grid ============ */
.grid-cards{
  display:grid;gap:26px;margin-top:40px;
  grid-template-columns:repeat(3,minmax(0,1fr));
}
.c-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--sh-1);
  transition:transform .18s var(--t),border-color .18s var(--t),box-shadow .18s var(--t);
}
.c-card:hover{transform:translateY(-4px);border-color:var(--gold-l);box-shadow:var(--sh-2)}
.c-thumb{
  position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--ink);
}
.c-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s var(--t);
}
.c-card:hover .c-thumb img{transform:scale(1.03)}
.c-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,22,27,.35) 0%,rgba(20,22,27,0) 45%);
}
.badge-x{
  position:absolute;top:14px;left:14px;z-index:2;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  background:rgba(255,255,255,.94);color:var(--ink);
  border-radius:var(--radius-sm);padding:6px 11px;
}
.lock-x{
  position:absolute;top:14px;right:14px;z-index:2;
  width:32px;height:32px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(20,22,27,.62);color:var(--gold-l);font-size:13px;
  border:1px solid rgba(255,255,255,.28);
}
.lock-x.is-open{color:var(--cyan);background:rgba(20,22,27,.55)}
.c-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.c-level{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12px;letter-spacing:.08em;font-weight:600;color:var(--muted);margin-bottom:12px;
}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.dot.l1{background:var(--l1)}
.dot.l2{background:var(--l2)}
.dot.l3{background:var(--l3)}
.dot.l4{background:var(--ink);box-shadow:inset 0 0 0 2px var(--gold-l)}
.c-body h3{font-size:1.14rem;line-height:1.45;font-weight:700;margin-bottom:10px}
.c-body p{font-size:15px;color:var(--muted);line-height:1.85}
.c-meta{
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.c-meta .go{color:var(--ink);font-weight:600}
.c-card:hover .c-meta .go{color:var(--gold)}

/* ============ pager ============ */
.pager{
  display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;
  margin-top:52px;
}
.pager .pg{
  min-width:44px;height:44px;padding:0 15px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14.5px;font-weight:600;font-variant-numeric:tabular-nums;
  transition:border-color .18s var(--t),color .18s var(--t),transform .18s var(--t);
}
.pager .pg:hover{border-color:var(--gold-l);color:var(--gold);transform:translateY(-2px)}
.pager .pg.current{background:var(--ink);border-color:var(--ink);color:#fff}
.pager .pg.dim{color:var(--muted);opacity:.65}
.pager-note{text-align:center;font-size:13.5px;color:var(--muted);margin-top:18px}

/* ============ stat strip ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
}
.stat-item{background:#fff;padding:32px 26px}
.stat-item .num{
  font-size:clamp(1.8rem,3vw,2.35rem);font-weight:900;color:var(--ink);line-height:1;
  letter-spacing:-.03em;font-variant-numeric:tabular-nums;
}
.stat-item .num small{font-size:14px;font-weight:600;color:var(--muted);margin-left:4px;letter-spacing:0}
.stat-item .lbl{margin-top:12px;font-size:14px;color:var(--muted)}

/* ============ level ladder ============ */
.ladder{display:grid;gap:18px}
.ladder-row{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 28px 26px 32px;overflow:hidden;
  transition:background .18s var(--t),border-color .18s var(--t),box-shadow .18s var(--t);
}
.ladder-row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:0;background:var(--gold);
  transition:width .22s var(--t);
}
.ladder-row:hover{background:#fff;border-color:var(--gold-l);box-shadow:var(--sh-2)}
.ladder-row:hover::before{width:3px}
.ladder-head{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:10px}
.ladder-head .tag-lv{
  font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;padding:5px 12px;
}
.ladder-head h3{font-size:1.2rem;font-weight:700}
.ladder-row p{color:var(--muted);font-size:15px}
.ladder-row ul{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px}
.ladder-row ul li{
  font-size:13.5px;color:var(--ink-2);background:var(--bg);
  border:1px solid var(--line);border-radius:999px;padding:7px 14px;
}
.bar-lv{height:6px;border-radius:999px;background:var(--line);margin-top:20px;overflow:hidden}
.bar-lv i{display:block;height:100%;border-radius:999px;width:0;transition:width .6s var(--t)}
.bar-lv.l1 i{width:25%;background:var(--l1)}
.bar-lv.l2 i{width:50%;background:var(--l2)}
.bar-lv.l3 i{width:75%;background:var(--l3)}
.bar-lv.l4 i{width:100%;background:linear-gradient(90deg,var(--gold),var(--ink))}

/* ============ faq ============ */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:16.5px;font-weight:600;color:var(--ink);
  cursor:pointer;
}
.faq-q .ico{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--gold);font-size:13px;transition:transform .22s var(--t),border-color .18s var(--t);
}
.faq-q[aria-expanded="true"] .ico{transform:rotate(45deg);border-color:var(--gold-l)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--t)}
.faq-a p{padding:0 46px 24px 0;color:var(--muted);font-size:15.5px;line-height:1.9}

/* ============ cta strip ============ */
.cta-strip{
  position:relative;overflow:hidden;
  background:var(--ink);border-radius:var(--radius-lg);
  padding:52px 48px;color:#fff;
}
.cta-strip::after{
  content:"";position:absolute;right:-80px;top:-60px;bottom:-60px;width:420px;
  background:repeating-linear-gradient(-38deg,rgba(176,129,47,.22) 0 2px,transparent 2px 26px);
  transform:skewX(-8deg);pointer-events:none;
}
.cta-strip h2{color:#fff;font-size:clamp(1.4rem,2.3vw,2rem);line-height:1.25;font-weight:800}
.cta-strip p{color:rgba(255,255,255,.75);margin-top:14px;max-width:560px}
.cta-row{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-top:28px;position:relative;z-index:2}
.cta-assure{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;position:relative;z-index:2}
.cta-assure span{font-size:13.5px;color:rgba(255,255,255,.7);display:inline-flex;align-items:center;gap:8px}
.cta-assure i{color:var(--cyan)}
.link-line{color:rgba(255,255,255,.86);font-weight:600;text-decoration:underline;text-underline-offset:4px}
.link-line:hover{color:var(--gold-l)}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:76px 0 32px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:44px}
.foot-brand .brand{color:#fff}
.foot-brand .brand:hover{color:#fff}
.foot-brand p{margin-top:18px;font-size:14.5px;line-height:1.9;max-width:300px;color:rgba(255,255,255,.6)}
.foot-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.foot-col ul li{margin-bottom:12px}
.foot-col a{color:rgba(255,255,255,.7);font-size:14.5px;text-decoration:none}
.foot-col a:hover{color:var(--gold-l);text-decoration:underline;text-underline-offset:4px}
.foot-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:rgba(255,255,255,.7)}
.foot-contact i{color:var(--gold);margin-top:6px}
.foot-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.foot-qr{display:flex;align-items:center;gap:12px}
.qr-box{
  width:56px;height:56px;border-radius:10px;
  background:
    linear-gradient(45deg,rgba(255,255,255,.18) 25%,transparent 25% 75%,rgba(255,255,255,.18) 75%) 0 0/12px 12px,
    rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
}

/* ============ reveal ============ */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .5s var(--t),transform .5s var(--t)}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ============ responsive ============ */
@media (max-width:1200px){
  .nav-main{gap:22px}
  .nav-link{font-size:14.5px}
  .grid-cards{gap:22px}
}
@media (max-width:991px){
  .nav-main{display:none}
  .nav-burger{display:block}
  .nav-cta{display:none}
  .nav-wrap{height:60px}
  .site-header.is-scrolled .nav-wrap{height:60px}
  .brand-text{font-size:17px}
  .section{padding:72px 0}
  .section-tight{padding:60px 0}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
  .grid-cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-strip{padding:44px 32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 18px}
  .page-hero{min-height:300px}
  .page-hero .container{padding-top:56px;padding-bottom:40px}
  .section{padding:56px 0}
  .section-tight{padding:52px 0}
  .section-head{margin-bottom:32px}
  .grid-cards{grid-template-columns:1fr;gap:20px}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-item{padding:24px 20px}
  .foot-grid{grid-template-columns:1fr;gap:30px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .cta-strip{padding:36px 24px;border-radius:16px}
  .cta-strip::after{width:240px;opacity:.7}
  .cta-row .btn-x{width:100%;justify-content:center}
  .ladder-row{padding:22px 20px 22px 24px}
}
@media (max-width:520px){
  .brand-text{font-size:16px}
  .chip{font-size:13px;padding:10px 16px}
  .c-body{padding:18px 18px 20px}
  .pager .pg{min-width:40px;height:40px;padding:0 12px;font-size:14px}
  .hero-tags span{font-size:12px;padding:6px 12px}
}

/* roulang page: category4 */
:root{
  --ink:#14161B;
  --ink-2:#2A2E36;
  --body:#3A3F47;
  --sub:#6A7079;
  --line:#E4E1DA;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --gold:#B0812F;
  --gold-l:#D8B978;
  --gold-soft:rgba(176,129,47,.06);
  --cyan:#23BFA9;
  --l1:#6B7280;
  --l2:#23BFA9;
  --l3:#B0812F;
  --l4:#14161B;
  --r-sm:8px;
  --r-md:12px;
  --r:16px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(20,22,27,.04);
  --sh-2:0 8px 24px -12px rgba(20,22,27,.12);
  --ease:cubic-bezier(.2,.7,.2,1);
  --bs-primary:#B0812F;
  --bs-body-color:#3A3F47;
  --bs-body-bg:#F7F6F3;
  --bs-border-radius:16px;
  --bs-link-color:#B0812F;
  --bs-link-hover-color:#14161B;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-body-font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.9;
  color:var(--body);
  background:var(--bg);
  letter-spacing:.01em;
}
img{max-width:100%;display:block;}
a{color:var(--gold);text-decoration:none;text-underline-offset:3px;}
a:hover{color:var(--ink);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;line-height:1.25;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.container{max-width:1320px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,246,243,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:height .25s var(--ease), box-shadow .25s var(--ease);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s var(--ease);}
.site-header.scrolled{box-shadow:var(--sh-2);}
.site-header.scrolled .nav-wrap{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:22px;height:22px;flex:0 0 22px;
  background:var(--ink);
  transform:rotate(45deg);
  border-radius:5px;
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;
  background:var(--gold);
  border-radius:2px;
}
.brand-text{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.nav-main{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--gold);transition:width .25s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.active{font-weight:600;color:var(--ink);}
.nav-link.active::after{width:22px;}
.nav-right{display:flex;align-items:center;gap:16px;}
.search-toggle{
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  display:inline-flex;align-items:center;justify-content:center;
  transition:all .18s var(--ease);
}
.search-toggle:hover{border-color:var(--gold-l);color:var(--gold);}
.btn-x{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;
  padding:11px 22px;border-radius:var(--r-md);
  border:1px solid transparent;cursor:pointer;
  transition:all .18s var(--ease);
}
.btn-x i{transition:transform .18s var(--ease);}
.btn-ink{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-ink:hover{background:var(--ink);color:#fff;border-color:var(--gold-l);}
.btn-ink:hover i{transform:translateX(4px);}
.btn-gold{background:var(--gold);color:var(--ink);border-color:var(--gold);}
.btn-gold:hover{background:var(--ink);color:#fff;border-color:var(--gold-l);}
.btn-gold:hover i{transform:translateX(4px);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-ghost:hover i{transform:translateX(4px);}
.nav-burger{
  display:none;
  width:40px;height:40px;border:0;background:transparent;
  position:relative;
}
.nav-burger span{
  position:absolute;left:9px;width:22px;height:2px;background:var(--ink);
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.nav-burger span:first-child{top:15px;}
.nav-burger span:last-child{top:23px;}
.site-header.nav-open .nav-burger span:first-child{transform:translateY(4px) rotate(45deg);}
.site-header.nav-open .nav-burger span:last-child{transform:translateY(-4px) rotate(-45deg);}
body.lock-scroll{overflow:hidden;}

/* ---------- 面包屑与页头 ---------- */
.page-banner{
  position:relative;overflow:hidden;
  min-height:340px;
  display:flex;align-items:flex-end;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,22,27,.72) 0%,rgba(20,22,27,.86) 100%);
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.7;
}
.banner-inner{position:relative;z-index:2;padding:56px 0 48px;width:100%;}
.crumbs{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:18px;}
.crumbs a{color:rgba(255,255,255,.72);}
.crumbs a:hover{color:var(--gold-l);}
.crumbs span.sep{opacity:.45;}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;font-weight:600;
  color:var(--ink);background:var(--gold-l);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.page-banner h1{
  color:#fff;
  font-size:clamp(2rem,4.4vw,3.25rem);
  line-height:1.1;letter-spacing:-.03em;font-weight:900;
  margin-bottom:16px;
}
.banner-lead{max-width:720px;color:rgba(255,255,255,.82);font-size:16.5px;margin-bottom:26px;}
.banner-quick{display:flex;flex-wrap:wrap;gap:10px;}
.banner-quick a{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;
  border:1px solid rgba(255,255,255,.28);
  color:rgba(255,255,255,.9);font-size:14px;
  background:rgba(255,255,255,.06);
  transition:all .18s var(--ease);
}
.banner-quick a:hover{border-color:var(--gold-l);color:var(--gold-l);background:rgba(176,129,47,.12);}

/* ---------- 通用板块 ---------- */
.sec{padding:96px 0;}
.sec--tight{padding:72px 0;}
.sec--alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--gold);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--gold);display:block;}
.sec-title{font-size:clamp(1.5rem,2.6vw,2.25rem);font-weight:800;letter-spacing:-.02em;line-height:1.2;}
.sec-desc{max-width:680px;color:var(--sub);font-size:16px;margin-top:14px;}
.sec-head{margin-bottom:44px;}
.sec-head.split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- 帮助目录 + FAQ ---------- */
.help-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.toc{
  position:sticky;top:100px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-1);
}
.toc h3{font-size:15px;letter-spacing:.04em;color:var(--ink);margin-bottom:16px;}
.toc ul li + li{margin-top:2px;}
.toc a{
  display:block;position:relative;
  padding:9px 0 9px 16px;
  font-size:14.5px;color:var(--body);
  border-left:2px solid transparent;
  transition:all .18s var(--ease);
}
.toc a::before{
  content:"";position:absolute;left:-2px;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--gold);transition:height .2s var(--ease);
}
.toc a:hover{color:var(--ink);background:var(--gold-soft);border-radius:0 var(--r-sm) var(--r-sm) 0;}
.toc a:hover::before{height:100%;}
.toc-note{
  margin-top:20px;padding-top:18px;border-top:1px dashed var(--line);
  font-size:13.5px;color:var(--sub);line-height:1.8;
}
.faq-group{margin-bottom:34px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group-title{
  display:flex;align-items:center;gap:12px;
  font-size:14px;font-weight:700;color:var(--gold);letter-spacing:.06em;
  margin-bottom:14px;scroll-margin-top:110px;
}
.faq-group-title::after{content:"";flex:1;height:1px;background:var(--line);}
.faq-acc .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);
}
.faq-acc .accordion-item:first-child{border-top:1px solid var(--line);}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;border:0;
  padding:20px 40px 20px 0;
  font-size:16.5px;font-weight:600;color:var(--ink);
  line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--ink);background:transparent;}
.faq-acc .accordion-button:hover{color:var(--gold);}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--cyan);outline-offset:-2px;border-radius:var(--r-sm);}
.faq-acc .accordion-button::after{
  width:18px;height:18px;margin-left:auto;
  background-image:linear-gradient(var(--gold),var(--gold)),linear-gradient(var(--gold),var(--gold));
  background-size:14px 2px,2px 14px;
  background-position:center center;
  background-repeat:no-repeat;
  transition:transform .25s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-acc .accordion-body{
  padding:0 40px 22px 0;
  font-size:15px;color:var(--sub);line-height:1.9;
}
.faq-acc .accordion-body strong{color:var(--ink-2);font-weight:600;}

/* ---------- 开通步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px 28px 30px;box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--gold-l);box-shadow:var(--sh-2);}
.step-num{
  font-family:'Inter',system-ui,sans-serif;
  font-size:44px;font-weight:900;color:var(--gold-l);line-height:1;
  letter-spacing:-.04em;margin-bottom:16px;display:block;
}
.step h3{font-size:1.15rem;margin-bottom:10px;}
.step p{font-size:15px;color:var(--sub);margin-bottom:0;}
.step .step-meta{
  margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--sub);display:flex;align-items:center;gap:8px;
}
.step .step-meta i{color:var(--cyan);}

/* ---------- 等级选择 ---------- */
.pick-layout{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;}
.pick-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-2);background:var(--ink);
}
.pick-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .4s var(--ease);}
.pick-media:hover img{transform:scale(1.03);}
.pick-list{display:grid;gap:16px;margin-top:26px;}
.pick-item{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:18px 20px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.pick-item:hover{transform:translateY(-4px);border-color:var(--gold-l);box-shadow:var(--sh-2);}
.pick-bar{width:4px;border-radius:4px;align-self:stretch;flex:0 0 4px;}
.bar-l1{background:var(--l1);}
.bar-l2{background:var(--l2);}
.bar-l3{background:var(--l3);}
.bar-l4{background:var(--l4);}
.pick-item h3{font-size:1rem;margin-bottom:4px;}
.pick-item p{font-size:14.5px;color:var(--sub);margin:0;}
.pick-tag{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--gold);background:var(--gold-soft);
  border:1px solid rgba(176,129,47,.28);
  padding:3px 10px;border-radius:var(--r-sm);margin-left:10px;vertical-align:middle;
}

/* ---------- 表单 ---------- */
.form-wrap{
  display:grid;grid-template-columns:5fr 7fr;gap:48px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:48px;box-shadow:var(--sh-1);
}
.form-side h2{font-size:clamp(1.4rem,2.3vw,2rem);margin-bottom:14px;}
.form-side p{color:var(--sub);font-size:15px;}
.form-side ul{margin-top:22px;display:grid;gap:12px;}
.form-side ul li{display:flex;gap:10px;font-size:14.5px;color:var(--body);}
.form-side ul li i{color:var(--cyan);margin-top:6px;}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:8px;}
.field .req{color:var(--gold);margin-left:4px;}
.field input,.field select,.field textarea{
  width:100%;
  padding:14px 18px;
  font-size:15px;color:var(--ink);
  background:#fff;
  border:1px solid var(--ink-2);
  border-radius:10px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  font-family:inherit;
}
.field textarea{min-height:110px;resize:vertical;line-height:1.75;}
.field input::placeholder,.field textarea::placeholder{color:#9AA0A8;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--gold);
  box-shadow:0 0 0 4px rgba(176,129,47,.14);
}
.field .hint{font-size:13px;color:var(--sub);margin-top:8px;}
.field .err{font-size:13px;color:#B4423A;margin-top:8px;display:none;}
.field.has-error input{border-color:#B4423A;}
.field.has-error .err{display:block;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.alert-ok{
  display:none;
  margin-top:20px;padding:14px 18px;
  border:1px solid rgba(35,191,169,.4);
  background:rgba(35,191,169,.08);
  border-radius:var(--r-md);
  font-size:14.5px;color:var(--ink-2);
}
.alert-ok.show{display:flex;gap:10px;align-items:flex-start;}
.alert-ok i{color:var(--cyan);margin-top:6px;}

/* ---------- 底部细条 CTA ---------- */
.cta-strip{
  position:relative;overflow:hidden;
  background:var(--ink);color:#fff;
  padding:56px 0;
}
.cta-strip::after{
  content:"";position:absolute;top:0;right:0;bottom:0;width:44%;
  background:repeating-linear-gradient(115deg,rgba(216,185,120,.16) 0 1px,transparent 1px 26px);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-strip h2{color:#fff;font-size:clamp(1.3rem,2.2vw,1.9rem);margin-bottom:8px;}
.cta-strip p{color:rgba(255,255,255,.72);font-size:15px;margin:0;}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.cta-actions .link-plain{color:rgba(255,255,255,.8);font-size:15px;text-decoration:underline;text-underline-offset:4px;}
.cta-actions .link-plain:hover{color:var(--gold-l);}
.cta-points{display:flex;gap:22px;flex-wrap:wrap;margin-top:22px;}
.cta-points span{font-size:13.5px;color:rgba(255,255,255,.66);display:inline-flex;align-items:center;gap:8px;}
.cta-points i{color:var(--gold-l);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 28px;}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-mark{background:#fff;}
.site-footer .brand-mark::after{background:var(--gold-l);}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;}
.foot-brand p{font-size:14.5px;margin-top:16px;max-width:280px;line-height:1.8;}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.02em;}
.foot-col ul{display:grid;gap:11px;}
.foot-col a{color:rgba(255,255,255,.72);font-size:14.5px;}
.foot-col a:hover{color:var(--gold-l);text-decoration:underline;}
.foot-contact li{display:flex;gap:10px;font-size:14.5px;}
.foot-contact i{color:var(--gold-l);margin-top:7px;}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.foot-qr{display:flex;align-items:center;gap:12px;}
.qr-box{
  width:56px;height:56px;border-radius:10px;
  background:
    linear-gradient(45deg,transparent 46%,rgba(255,255,255,.4) 46% 54%,transparent 54%),
    linear-gradient(-45deg,transparent 46%,rgba(255,255,255,.4) 46% 54%,transparent 54%),
    rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .help-layout{gap:36px;}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .foot-contact{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .nav-main{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg);
    padding:18px 24px 140px;
    border-top:1px solid var(--line);
    overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
    z-index:1040;
  }
  .site-header.nav-open .nav-main{opacity:1;visibility:visible;transform:none;}
  .nav-main .nav-link{
    font-size:18px;font-weight:500;padding:18px 0;
    border-bottom:1px solid var(--line);
  }
  .nav-main .nav-link::after{display:none;}
  .nav-main .nav-link.active{color:var(--gold);font-weight:600;}
  .nav-burger{display:inline-block;}
  .search-toggle{display:none;}
  .nav-wrap{height:60px;}
  .site-header.scrolled .nav-wrap{height:60px;}
  .nav-cta{
    position:fixed;left:20px;right:20px;bottom:22px;
    justify-content:center;
    opacity:0;visibility:hidden;
    transition:opacity .22s var(--ease),visibility .22s;
    z-index:1050;
  }
  .site-header.nav-open .nav-cta{opacity:1;visibility:visible;}
  .page-banner{min-height:300px;}
  .sec{padding:72px 0;}
  .sec--tight{padding:56px 0;}
  .help-layout{grid-template-columns:1fr;}
  .toc{position:static;}
  .steps{grid-template-columns:1fr;}
  .pick-layout{grid-template-columns:1fr;gap:32px;}
  .form-wrap{grid-template-columns:1fr;gap:32px;padding:32px 24px;}
  .cta-inner{align-items:flex-start;}
}
@media (max-width:767.98px){
  .container{padding:0 16px;}
  body{font-size:15.5px;}
  .sec{padding:56px 0;}
  .sec--tight{padding:48px 0;}
  .sec-head{margin-bottom:30px;}
  .banner-inner{padding:40px 0 36px;}
  .page-banner{min-height:280px;}
  .banner-lead{font-size:15px;}
  .banner-quick a{font-size:13px;padding:8px 14px;}
  .form-row{grid-template-columns:1fr;gap:0;}
  .faq-acc .accordion-button{font-size:15.5px;padding:18px 34px 18px 0;}
  .faq-acc .accordion-body{padding-right:12px;}
  .foot-grid{grid-template-columns:1fr;gap:30px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:14px;}
  .cta-points{gap:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}