/* roulang page: index */
:root{
  --primary:#4A2E8F;
  --primary-600:#3A2270;
  --primary-soft:#EFEAFB;
  --primary-line:#DCCDF7;
  --amber:#FF7A45;
  --amber-2:#FF6A2E;
  --green:#12B886;
  --slate:#64748B;
  --ink:#16122B;
  --text:#3D3A52;
  --muted:#7A7691;
  --line:#E7E3F2;
  --bg:#FBFAFE;
  --card:#FFFFFF;
  --dark:#14102A;
  --row-alt:#F7F5FE;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --sh-1:0 2px 8px rgba(22,18,43,.05);
  --sh-2:0 10px 28px rgba(74,46,143,.12);
  --sh-3:0 18px 40px rgba(20,16,42,.18);
  --t:.22s cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;letter-spacing:.01em;font-weight:700}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
@media(max-width:1023px){.container{padding:0 24px}}
@media(max-width:767px){.container{padding:0 16px}}

/* ---------- 顶部细条 ---------- */
.topbar{background:linear-gradient(90deg,#2C1A5E,#4A2E8F);color:rgba(255,255,255,.86);font-size:12px;line-height:1.6}
.topbar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:34px}
.topbar-in span{letter-spacing:.02em}
.topbar-links{display:flex;gap:18px}
.topbar-links a{color:rgba(255,255,255,.78);transition:color var(--t)}
.topbar-links a:hover{color:#fff}
@media(max-width:767px){.topbar-in{justify-content:center}.topbar-links{display:none}}

/* ---------- 主导航 ---------- */
.mainnav{
  position:sticky;top:0;z-index:60;
  background:rgba(251,250,254,.86);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t),box-shadow var(--t);
}
.mainnav.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(22,18,43,.06)}
.nav-in{display:flex;align-items:center;gap:20px;min-height:68px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,#6D4AE0,#3A2270);
  color:#fff;font-size:17px;font-weight:700;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(74,46,143,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:16px;color:var(--ink);letter-spacing:.02em;font-weight:700}
.logo-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.14em}
.chips-wrap{flex:1;min-width:0;position:relative;overflow:hidden}
.chips-wrap::before,.chips-wrap::after{
  content:"";position:absolute;top:0;bottom:0;width:24px;z-index:2;pointer-events:none;opacity:0;transition:opacity var(--t);
}
.chips-wrap::before{left:0;background:linear-gradient(90deg,rgba(251,250,254,.95),rgba(251,250,254,0))}
.chips-wrap::after{right:0;background:linear-gradient(270deg,rgba(251,250,254,.95),rgba(251,250,254,0))}
.chips{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:4px 2px}
.chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  height:36px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:transparent;
  font-size:14px;color:var(--text);transition:all var(--t);
}
.chip:hover{background:var(--primary-soft);border-color:var(--primary-line);color:var(--primary-600)}
.chip.active{
  background:var(--primary);border-color:var(--primary);color:#fff;
  box-shadow:0 0 0 3px rgba(74,46,143,.14);
}
.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-login{font-size:14px;color:var(--primary);font-weight:600;transition:color var(--t)}
.nav-login:hover{color:var(--amber-2)}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;color:var(--ink);
}
.menu-btn:hover{background:var(--primary-soft)}
@media(max-width:1023px){
  .chips-wrap{display:none}
  .menu-btn{display:inline-flex}
  .nav-actions{margin-left:auto}
}
@media(max-width:520px){.nav-actions .btn-sm{display:none}}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(20,16,42,.45);opacity:0;visibility:hidden;transition:all var(--t);z-index:80}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);background:#fff;z-index:90;
  transform:translateX(102%);transition:transform .28s cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
  box-shadow:-16px 0 40px rgba(20,16,42,.18);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--muted)}
.drawer-close:hover{background:var(--primary-soft);color:var(--primary)}
.drawer-nav{display:flex;flex-direction:column;gap:8px;margin-bottom:24px}
.drawer-nav a{padding:12px 14px;border-radius:12px;font-size:15px;color:var(--text);border:1px solid var(--line);transition:all var(--t)}
.drawer-nav a:hover{background:var(--primary-soft);border-color:var(--primary-line);color:var(--primary-600)}
.drawer-nav a.active{background:var(--primary);border-color:var(--primary);color:#fff}
.drawer .btn{width:100%}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:all var(--t);white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,#FF8A54,#FF6A2E);color:#fff;box-shadow:0 6px 18px rgba(255,106,46,.28)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,106,46,.34)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-primary:disabled{opacity:.65;cursor:not-allowed;transform:none}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-ghost:hover{background:var(--primary-soft)}
.btn-ghost:active{background:var(--primary-line)}
.btn-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.btn.is-loading{pointer-events:none}
.btn.is-loading::after{
  content:"";width:14px;height:14px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.link-arrow{display:inline-flex;align-items:center;gap:4px;font-size:14px;font-weight:600;color:var(--primary);transition:color var(--t)}
.link-arrow span{display:inline-block;transition:transform var(--t)}
.link-arrow:hover{color:var(--amber-2)}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
@media(max-width:1023px){.section{padding:64px 0}}
@media(max-width:767px){.section{padding:48px 0}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-title{position:relative;padding-left:18px;font-size:30px;line-height:1.3}
.sec-title::before{content:"";position:absolute;left:0;top:8px;width:10px;height:10px;border-radius:3px;background:var(--primary)}
.sec-sub{margin-top:10px;font-size:14.5px;color:var(--muted);max-width:640px}
@media(max-width:767px){
  .sec-title{font-size:22px}
  .sec-title::before{top:6px;width:8px;height:8px}
}

/* ---------- Hero ---------- */
.hero{position:relative;padding:60px 0 88px;overflow:hidden}
.hero::after{
  content:"";position:absolute;right:-60px;top:40px;width:340px;height:340px;pointer-events:none;
  background-image:radial-gradient(rgba(74,46,143,.18) 1.5px,transparent 1.5px);
  background-size:16px 16px;opacity:.55;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;background:var(--primary-soft);
  border:1px solid var(--primary-line);color:var(--primary-600);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--green);display:inline-block}
.hero h1{
  margin-top:20px;
  font-size:clamp(1.75rem,4vw,2.85rem);
  line-height:1.35;letter-spacing:.01em;
}
.hero h1 .hl{color:var(--primary);position:relative;white-space:nowrap}
.hero h1 .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:.08em;height:.28em;
  background:rgba(255,122,69,.22);border-radius:3px;z-index:-1;
}
.hero-sub{margin-top:18px;font-size:16px;color:var(--text);max-width:560px;line-height:1.85}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;margin-top:40px;padding-top:26px;border-top:1px solid var(--line);flex-wrap:wrap}
.stat b{display:block;font-size:26px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:.01em;line-height:1.2}
.stat span{font-size:12.5px;color:var(--muted)}
.hero-visual{position:relative}
.hero-img{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:0 18px 40px rgba(20,16,42,.18);aspect-ratio:4/3;background:#EDE9F8;
}
.hero-img img{width:100%;height:100%;object-fit:cover}
.hero-float{
  position:absolute;right:-16px;bottom:-24px;width:220px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;box-shadow:var(--sh-3);
}
.hf-top{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.hf-dot{width:8px;height:8px;border-radius:50%;background:var(--amber)}
.hf-top b{font-size:13.5px;color:var(--ink)}
.hf-bar{height:6px;border-radius:999px;background:var(--primary-soft);overflow:hidden}
.hf-bar i{display:block;height:100%;width:72%;border-radius:999px;background:linear-gradient(90deg,#6D4AE0,#4A2E8F)}
.hf-note{margin-top:8px;font-size:12px;color:var(--muted)}
@media(max-width:1023px){
  .hero{padding:44px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:2}
  .hero-float{right:12px;bottom:-18px;width:200px}
}
@media(max-width:520px){
  .hero-stats{gap:24px}
  .stat b{font-size:22px}
  .hero-float{position:static;width:100%;margin-top:14px}
}

/* ---------- 权益对比表 ---------- */
.compare-scroll{overflow-x:auto;border-radius:var(--r-lg);box-shadow:var(--sh-1);border:1px solid var(--line);background:#fff;scrollbar-width:thin}
.ctable{min-width:820px}
.crow{display:grid;grid-template-columns:1.6fr repeat(4,1fr);align-items:stretch}
.crow + .crow{border-top:1px solid var(--line)}
.crow:nth-child(even){background:var(--row-alt)}
.crow .cc{
  padding:16px 12px;display:flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--text);text-align:center;min-height:56px;
}
.crow .cc-first{
  justify-content:flex-start;text-align:left;padding-left:20px;
  font-weight:600;color:var(--ink);font-size:14.5px;
  box-shadow:inset 3px 0 0 var(--primary-line);
  position:sticky;left:0;background:#fff;z-index:2;
}
.crow:nth-child(even) .cc-first{background:var(--row-alt)}
.chead{position:sticky;top:0;z-index:3;background:#fff}
.chead .cc{
  font-weight:700;color:var(--ink);font-size:14.5px;padding:18px 12px;
  border-bottom:1px solid var(--line);
}
.chead .cc-first{background:#fff;box-shadow:inset 3px 0 0 var(--primary)}
.cc-rec{
  position:relative;background:rgba(109,74,224,.06);
  box-shadow:inset 2px 0 0 #6D4AE0,inset -2px 0 0 #6D4AE0;
}
.chead .cc-rec{box-shadow:inset 2px 0 0 #6D4AE0,inset -2px 0 0 #6D4AE0,inset 0 2px 0 #6D4AE0}
.crow:last-child .cc-rec{box-shadow:inset 2px 0 0 #6D4AE0,inset -2px 0 0 #6D4AE0,inset 0 -2px 0 #6D4AE0}
.rec-badge{
  position:absolute;top:6px;right:8px;font-size:10.5px;line-height:1;
  padding:4px 7px;border-radius:999px;background:var(--amber);color:#fff;font-weight:600;font-style:normal;
}
.yes{color:var(--green);font-size:17px;font-weight:700}
.no{color:#C4C0D4;font-size:16px}

/* ---------- 等级亮点 ---------- */
.tiers-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.tier-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px 22px;box-shadow:var(--sh-1);overflow:hidden;transition:all var(--t);
}
.tier-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:4px;background:var(--slate)}
.tier-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--primary-line)}
.tier-card.t2::before{background:var(--green)}
.tier-card.t3::before{background:#6D4AE0}
.tier-card.t4::before{background:#F2A33C}
.tier-card.t2,.tier-card.t4{transform:translateY(24px)}
.tier-card.t2:hover,.tier-card.t4:hover{transform:translateY(22px)}
.tier-card h3{font-size:20px;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.tier-dot{width:9px;height:9px;border-radius:50%;background:var(--slate);flex-shrink:0}
.t2 .tier-dot{background:var(--green)}
.t3 .tier-dot{background:#6D4AE0}
.t4 .tier-dot{background:#F2A33C}
.tier-line{font-size:13.5px;color:var(--muted);margin-bottom:18px}
.tier-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.tier-list li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text)}
.tier-list li svg{flex-shrink:0;color:var(--primary)}
.tier-progress{margin-top:auto}
.tier-progress .bar{height:6px;border-radius:999px;background:var(--primary-soft);overflow:hidden}
.tier-progress .bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#8E6DE8,#4A2E8F)}
.tier-progress span{display:block;margin-top:8px;font-size:11.5px;color:var(--muted)}
@media(max-width:1023px){
  .tiers-grid{gap:20px}
  .tier-card.t2,.tier-card.t4{transform:none}
  .tier-card.t2:hover,.tier-card.t4:hover{transform:translateY(-2px)}
}
@media(max-width:767px){.tiers-grid{grid-template-columns:1fr}}

/* ---------- 专属内容预览 ---------- */
.preview-grid{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:repeat(2,1fr);gap:20px}
.pv-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:all var(--t);display:flex;flex-direction:column;
}
.pv-card:hover{box-shadow:var(--sh-2);border-color:var(--primary-line)}
.pv-big{grid-row:1/3}
.pv-media{position:relative;overflow:hidden;background:#EDE9F8}
.pv-big .pv-media{aspect-ratio:16/10;flex:0 0 auto}
.pv-card:not(.pv-big) .pv-media{aspect-ratio:16/7}
.pv-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1)}
.pv-card:hover .pv-media img{transform:scale(1.03)}
.pv-lock{
  position:absolute;left:14px;top:14px;display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:999px;background:rgba(20,16,42,.78);color:#fff;font-size:11.5px;font-weight:600;
  backdrop-filter:blur(4px);
}
.pv-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,16,42,.05),rgba(20,16,42,.42));transition:opacity var(--t)}
.pv-card:hover .pv-shade{opacity:.7}
.pv-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.pv-chip{align-self:flex-start;font-size:12px;padding:4px 10px;border-radius:999px;background:var(--primary-soft);color:var(--primary-600);font-weight:600}
.pv-body h3{font-size:19px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pv-big .pv-body h3{font-size:22px}
.pv-body p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pv-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px dashed var(--line)}
.gate{font-size:12px;padding:4px 10px;border-radius:999px;border:1px solid var(--primary-line);color:var(--primary-600);background:#fff}
.gate.g-low{border-color:#D8F3E7;color:#0E9B70;background:#F2FCF8}
@media(max-width:1023px){
  .preview-grid{grid-template-columns:1fr;grid-template-rows:auto}
  .pv-big{grid-row:auto}
  .pv-big .pv-media,.pv-card:not(.pv-big) .pv-media{aspect-ratio:16/9}
}

/* ---------- 最新信息（CMS） ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--sh-1);transition:all var(--t);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--primary-line)}
.news-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:#EDE9F8}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1)}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.chip-cat{align-self:flex-start;font-size:12px;padding:4px 10px;border-radius:999px;background:var(--primary-soft);color:var(--primary-600);font-weight:600}
.news-body h3{font-size:17.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a:hover{color:var(--primary)}
.news-body p{font-size:13.5px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted);
}
.news-more{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:4px}
.news-more:hover{color:var(--amber-2)}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:56px 24px;border:1px dashed var(--primary-line);border-radius:var(--r-card);background:#fff;
}
.empty-state svg{color:#C4BBE6}
.empty-state p{font-size:14px;color:var(--muted)}
@media(max-width:1023px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.news-grid{grid-template-columns:1fr}}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-aside p{font-size:14px;color:var(--muted);margin-top:12px}
.faq-aside .link-arrow{margin-top:20px}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color var(--t)}
.faq-item[open]{border-color:var(--primary-line);box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:15.5px;font-weight:600;color:var(--ink);transition:color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item[open] summary{color:var(--primary-600)}
.faq-icon{
  flex-shrink:0;width:22px;height:22px;position:relative;transition:transform var(--t);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px;transition:opacity var(--t)}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 20px 20px;font-size:14.5px;line-height:1.9;color:var(--text)}
@media(max-width:1023px){.faq-layout{grid-template-columns:1fr;gap:28px}}

/* ---------- 开通会员 CTA ---------- */
.join-sec{position:relative;background:var(--dark);color:#fff;padding:88px 0;margin-top:24px;overflow:hidden}
.join-sec::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:18px 18px;
}
.join-sec h2,.join-sec h3{color:#fff}
.join-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.join-copy .sec-title{color:#fff}
.join-copy .sec-title::before{background:var(--amber)}
.join-copy p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.72);max-width:460px}
.join-points{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.join-points li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:rgba(255,255,255,.86)}
.join-points li svg{flex-shrink:0;margin-top:4px;color:var(--green)}
.join-card{
  background:#fff;border-radius:var(--r-lg);padding:30px;color:var(--text);
  box-shadow:0 24px 60px rgba(0,0,0,.35);
}
.join-card h3{color:var(--ink);font-size:20px;margin-bottom:6px}
.join-card > p{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--ink);font-weight:600;margin-bottom:7px}
.field input,.field select{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;font-size:14.5px;color:var(--ink);
  transition:border-color var(--t),box-shadow var(--t);appearance:none;
}
.field select{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%237A7691' d='M6 8 0 0h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}
.field input:focus,.field select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(74,46,143,.12)}
.field input.is-error{border-color:#E5484D;box-shadow:0 0 0 3px rgba(229,72,77,.12)}
.field-err{display:none;margin-top:6px;font-size:12px;color:#E5484D}
.agree{display:flex;align-items:flex-start;gap:10px;margin:18px 0 20px;font-size:13px;color:var(--muted)}
.agree input{
  appearance:none;flex-shrink:0;width:18px;height:18px;border-radius:6px;border:1px solid var(--line);
  background:#fff;margin-top:2px;cursor:pointer;position:relative;transition:all var(--t);
}
.agree input:checked{background:var(--primary);border-color:var(--primary)}
.agree input:checked::after{
  content:"";position:absolute;left:5px;top:2px;width:5px;height:9px;
  border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg);
}
.agree a{color:var(--primary);font-weight:600}
.join-card .btn{width:100%}
.join-hint{margin-top:14px;font-size:12.5px;color:var(--muted);text-align:center;line-height:1.75}
.join-ok{
  display:none;align-items:center;gap:10px;margin-top:16px;padding:12px 14px;border-radius:12px;
  background:#F2FCF8;border:1px solid #CDEFE0;color:#0E9B70;font-size:13.5px;
}
.join-ok svg{flex-shrink:0}
@media(max-width:1023px){
  .join-sec{padding:64px 0}
  .join-grid{grid-template-columns:1fr;gap:36px}
}
@media(max-width:520px){
  .join-card{padding:22px}
}

/* ---------- 页脚 ---------- */
.site-footer{background:#100D20;color:rgba(255,255,255,.72);padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.f-col h4{font-size:13px;font-weight:600;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.f-col ul{display:flex;flex-direction:column;gap:11px}
.f-col a{font-size:13.5px;color:rgba(255,255,255,.72);transition:all var(--t);display:inline-block}
.f-col a:hover{color:#fff;transform:translateX(2px)}
.footer-brand .logo-mark{background:linear-gradient(135deg,#6D4AE0,#3A2270)}
.footer-brand .logo-text strong{color:#fff}
.footer-brand .logo-text em{color:rgba(255,255,255,.5)}
.footer-brand p{margin-top:16px;font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:320px}
.f-contact li{font-size:13.5px;color:rgba(255,255,255,.72);display:flex;gap:8px;align-items:flex-start}
.f-contact li svg{margin-top:4px;flex-shrink:0;color:var(--amber)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
.footer-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a:hover{color:#fff}
@media(max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr;gap:28px}.site-footer{padding-top:48px}}

/* ---------- 移动端吸底条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.95);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  box-shadow:0 -6px 20px rgba(22,18,43,.08);
}
.mobile-bar .btn{width:100%}
@media(max-width:767px){
  .mobile-bar{display:block}
  body{padding-bottom:76px}
}
.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}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --purple-700:#3A2270;
  --purple-600:#4A2E8F;
  --purple-500:#6D4AE0;
  --purple-100:#EFEAFB;
  --purple-050:#F7F5FE;
  --amber-600:#FF6A2E;
  --amber-500:#FF7A45;
  --green-500:#12B886;
  --slate-500:#64748B;
  --ink:#16122B;
  --body-text:#3D3A52;
  --muted:#7A7691;
  --line:#E7E3F2;
  --bg:#FBFAFE;
  --white:#FFFFFF;
  --dark:#14102A;
  --r-card:16px;
  --r-block:20px;
  --r-btn:10px;
  --r-chip:999px;
  --sh-1:0 2px 8px rgba(22,18,43,.05);
  --sh-2:0 10px 28px rgba(74,46,143,.12);
  --sh-3:0 18px 40px rgba(20,16,42,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",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:1.85;
  color:var(--body-text);
  background:var(--bg);
  padding-bottom:0;
}
img{display:block;max-width:100%;height:auto;background:#EEECF5}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3;letter-spacing:.01em}
p{margin:0}
svg{display:block}
::selection{background:var(--purple-100);color:var(--purple-700)}
:focus-visible{outline:2px solid var(--purple-600);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--purple-600);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 顶部细条 ---------- */
.topbar{background:var(--purple-050);border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px}
.tb-note{display:inline-flex;align-items:center;gap:8px}
.tb-note::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green-500)}
.tb-links{display:flex;gap:18px}
.tb-links a{transition:color .2s var(--ease)}
.tb-links a:hover{color:var(--purple-600)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(251,250,254,.86);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(22,18,43,.06);background:rgba(251,250,254,.95)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,#5B39AE 0%,var(--purple-600) 100%);
  color:#fff;font-size:18px;font-weight:700;line-height:38px;text-align:center;
  box-shadow:0 6px 14px rgba(74,46,143,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.logo-text em{font-style:normal;font-size:11.5px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
.chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;justify-content:center;overflow-x:auto;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;
  height:36px;padding:0 16px;border-radius:var(--r-chip);
  border:1px solid var(--line);background:transparent;
  font-size:14px;color:var(--body-text);white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.chip:hover{background:var(--purple-100);border-color:#DCD3F5;color:var(--purple-700)}
.chip.active{background:var(--purple-600);border-color:transparent;color:#fff;box-shadow:0 0 0 2px rgba(74,46,143,.16)}
.chip:active{transform:translateY(1px)}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.link-plain{font-size:14.5px;color:var(--body-text);transition:color .2s var(--ease)}
.link-plain:hover{color:var(--purple-600)}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;cursor:pointer;align-items:center;justify-content:center;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.menu-toggle:hover{background:var(--purple-050);border-color:#DCD3F5}
.menu-toggle span{display:block;width:16px;height:2px;background:var(--purple-700);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--purple-700);border-radius:2px}
.menu-toggle span::before{top:-5px}
.menu-toggle span::after{top:5px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{background:linear-gradient(120deg,#FF8A54 0%,#FF6A2E 100%);color:#fff;box-shadow:0 8px 20px rgba(255,106,46,.26)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,106,46,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(255,106,46,.24)}
.btn-ghost{background:transparent;border-color:var(--purple-600);color:var(--purple-600)}
.btn-ghost:hover{background:var(--purple-100)}
.btn-dark-ghost{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn-dark-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.7)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--purple-600)}
.arrow-link svg{transition:transform .2s var(--ease)}
.arrow-link:hover svg{transform:translateX(4px)}

/* ---------- 抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(20,16,42,.45);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:90}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:304px;max-width:86vw;
  background:#fff;z-index:100;padding:20px 20px 32px;
  transform:translateX(102%);transition:transform .28s var(--ease);
  overflow-y:auto;box-shadow:var(--sh-3);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:18px;line-height:1;color:var(--muted)}
.drawer-close:hover{background:var(--purple-050);color:var(--purple-700)}
.drawer-nav{display:flex;flex-direction:column;gap:8px;margin-bottom:24px}
.drawer-nav a{
  padding:12px 14px;border-radius:12px;font-size:15px;color:var(--body-text);
  border:1px solid var(--line);transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--purple-050);border-color:#DCD3F5;color:var(--purple-700)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);padding:26px 0 0;
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#C9C4DA}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--purple-600)}
.breadcrumb .current{color:var(--purple-600);max-width:min(52vw,420px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头 ---------- */
.article-hero{position:relative;padding:22px 0 0}
.article-hero::after{
  content:"";position:absolute;right:8%;top:6px;width:180px;height:180px;pointer-events:none;
  background-image:radial-gradient(rgba(74,46,143,.14) 1.5px,transparent 1.5px);
  background-size:16px 16px;opacity:.8;z-index:0;
}
.article-head{position:relative;z-index:1;max-width:900px;padding:22px 0 8px}
.head-tag{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-chip);
  background:var(--purple-100);color:var(--purple-700);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.article-head h1{
  margin:16px 0 0;
  font-size:clamp(1.6rem,3.4vw,2.4rem);
  line-height:1.35;
  font-weight:700;
  color:var(--ink);
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:18px;font-size:13.5px;color:var(--muted)}
.meta-chip{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:var(--r-chip);
  background:var(--purple-050);border:1px solid var(--line);color:var(--purple-700);font-size:12.5px;font-weight:600;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.meta-chip:hover{background:var(--purple-100);border-color:#DCD3F5;transform:translateY(-1px)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C9C4DA}
.article-meta b{color:var(--purple-600);font-weight:700}
.head-note{font-size:13.5px;color:var(--muted);margin-top:14px;max-width:760px}

/* ---------- 横幅图 ---------- */
.article-banner{margin-top:28px}
.article-banner .media{
  position:relative;border-radius:var(--r-block);overflow:hidden;aspect-ratio:16/5.4;
  box-shadow:var(--sh-2);background:#EEECF5;
}
.article-banner img{width:100%;height:100%;object-fit:cover}
.article-banner .media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,16,42,0) 40%,rgba(20,16,42,.45) 100%);
}
.article-banner .media span{
  position:absolute;left:24px;bottom:20px;z-index:2;color:#fff;font-size:13.5px;letter-spacing:.04em;
}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;align-items:start;padding-top:52px;padding-bottom:72px;
}
.article-main{min-width:0}
.article-body{font-size:16.5px;line-height:1.9;color:var(--body-text);max-width:820px}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  position:relative;font-size:22px;margin:40px 0 16px;padding-left:14px;
  border-left:4px solid var(--purple-600);color:var(--ink);scroll-margin-top:96px;
}
.article-body h3{font-size:18px;margin:28px 0 12px;color:var(--ink)}
.article-body h4{font-size:16.5px;margin:22px 0 10px;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:0}
.article-body li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul>li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--purple-600);
}
.article-body ol{counter-reset:li}
.article-body ol>li{counter-increment:li}
.article-body ol>li::before{
  content:counter(li);position:absolute;left:0;top:.25em;
  width:16px;height:16px;line-height:16px;text-align:center;border-radius:5px;
  background:var(--purple-100);color:var(--purple-700);font-size:11px;font-weight:700;
}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;border-left:3px solid var(--purple-600);
  background:var(--purple-050);border-radius:0 12px 12px 0;color:#4A4762;
}
.article-body img{border-radius:12px;margin:24px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body a{color:var(--purple-600);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--purple-700)}
.article-body strong{color:var(--ink);font-weight:700}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;display:block;overflow-x:auto;white-space:nowrap}
.article-body thead th{background:var(--purple-050);color:var(--ink);font-weight:600}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left}
.article-body tbody tr:hover{background:var(--purple-050)}
.article-body pre{
  background:#F4F2FA;border:1px solid var(--line);border-radius:12px;padding:16px 18px;
  overflow-x:auto;font-size:13.5px;line-height:1.7;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body code{background:#F4F2FA;border-radius:6px;padding:2px 6px;font-size:13.5px;font-family:ui-monospace,Menlo,Consolas,monospace}
.article-body pre code{background:none;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body .table-wrap{overflow-x:auto}

/* ---------- 空态 ---------- */
.empty-state{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-block);
  padding:64px 32px;text-align:center;box-shadow:var(--sh-1);max-width:820px;
}
.empty-state .es-icon{
  width:56px;height:56px;border-radius:16px;margin:0 auto 18px;
  background:var(--purple-100);color:var(--purple-600);
  display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;
}
.empty-state h2{font-size:20px;margin-bottom:10px}
.empty-state p{color:var(--muted);font-size:14.5px;margin-bottom:22px}

/* ---------- 文末导航与说明 ---------- */
.article-foot-nav{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:48px;padding-top:30px;
  border-top:1px solid var(--line);max-width:820px;
}
.article-note{
  margin-top:32px;max-width:820px;background:var(--purple-050);
  border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;font-size:13.5px;color:#5B5871;
}
.article-note strong{color:var(--ink)}

/* ---------- 侧栏 ---------- */
.article-aside{
  position:sticky;top:92px;display:grid;gap:16px;align-self:start;
  max-height:calc(100vh - 120px);overflow-y:auto;scrollbar-width:thin;padding-right:2px;
}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.side-card:hover{box-shadow:var(--sh-2);border-color:#DCD3F5}
.side-card h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--purple-600)}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  font-size:13.5px;color:var(--body-text);padding:7px 10px;border-radius:8px;
  border-left:2px solid transparent;line-height:1.6;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover{background:var(--purple-050);color:var(--purple-700);border-left-color:var(--purple-600)}
.tier-rows{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.tier-row{display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--body-text)}
.tier-row span:last-child{font-weight:700;color:var(--ink)}
.tier-row .dot{display:inline-flex;align-items:center;gap:8px}
.tier-row .dot i{width:8px;height:8px;border-radius:50%;display:inline-block}
.side-card .hint{font-size:12.5px;color:var(--muted);margin-top:12px;line-height:1.7}
.col-chips{display:flex;flex-wrap:wrap;gap:8px}
.col-chips a{
  font-size:12.5px;padding:6px 12px;border-radius:var(--r-chip);
  background:var(--purple-050);color:var(--purple-700);border:1px solid var(--line);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.col-chips a:hover{background:var(--purple-100);transform:translateY(-1px)}

/* ---------- 相关推荐 ---------- */
.related{padding:8px 0 88px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:26px;display:flex;align-items:center;gap:12px}
.section-head h2::before{content:"";width:6px;height:22px;border-radius:6px;background:var(--purple-600)}
.section-head p{font-size:14px;color:var(--muted);margin-top:8px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.card:hover{box-shadow:var(--sh-2);border-color:#DCD3F5;transform:translateY(-2px)}
.card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EEECF5}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.card:hover .thumb img{transform:scale(1.03)}
.card .thumb .tag{
  position:absolute;left:12px;top:12px;z-index:2;
  background:rgba(20,16,42,.62);color:#fff;font-size:12px;padding:4px 10px;border-radius:var(--r-chip);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .desc{
  font-size:13.8px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card .meta-row{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:8px}

/* ---------- CTA 深色区块 ---------- */
.cta-band{
  position:relative;background:var(--dark);color:#fff;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:16px 16px;pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;
  justify-content:space-between;gap:32px;padding:72px 0;
}
.cta-inner h2{color:#fff;font-size:28px;max-width:520px}
.cta-inner p{color:rgba(255,255,255,.72);font-size:14.5px;margin-top:12px;max-width:560px}
.cta-points{display:flex;flex-wrap:wrap;gap:18px;margin-top:22px}
.cta-points span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.86)}
.cta-points span::before{
  content:"";width:16px;height:16px;border-radius:50%;background:rgba(18,184,134,.18);
  border:1px solid rgba(18,184,134,.7);
  background-image:linear-gradient(45deg,transparent 45%,#12B886 45%,#12B886 55%,transparent 55%);
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12)}
.f-col h4{font-size:13px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.f-col ul{display:flex;flex-direction:column;gap:10px}
.f-col a{font-size:13.5px;color:rgba(255,255,255,.72);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
.f-col a:hover{color:#fff;transform:translateX(2px)}
.footer-brand .logo{margin-bottom:14px}
.footer-brand .logo-text strong{color:#fff}
.footer-brand .logo-text em{color:rgba(255,255,255,.6)}
.footer-brand p{font-size:13.5px;line-height:1.8;max-width:320px}
.f-contact li{display:flex;align-items:flex-start;gap:8px;font-size:13.5px;line-height:1.7}
.f-contact svg{margin-top:5px;flex:0 0 auto;color:rgba(255,255,255,.5)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:22px 0 28px;font-size:12.5px;color:rgba(255,255,255,.55)}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}
.fb-links a{color:rgba(255,255,255,.62);transition:color .2s var(--ease)}
.fb-links a:hover{color:#fff}

/* ---------- 移动吸底条 ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  align-items:center;justify-content:space-between;gap:14px;
  background:rgba(255,255,255,.97);border-top:1px solid var(--line);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  box-shadow:0 -8px 24px rgba(22,18,43,.08);
}
.sticky-cta .sc-text{font-size:12.5px;color:var(--muted);line-height:1.5}
.sticky-cta .sc-text b{display:block;font-size:14px;color:var(--ink);font-weight:700}

/* ---------- 状态样式 ---------- */
.img-fail{opacity:0}
.is-loading{background:linear-gradient(90deg,#F2F0F8 25%,#E9E6F4 37%,#F2F0F8 63%);background-size:400% 100%;animation:shimmer 1.4s infinite linear}
@keyframes shimmer{0%{background-position:100% 0}100%{background-position:0 0}}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{gap:36px}
  .card-grid{gap:20px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .chips{
    justify-content:flex-start;
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 24px,#000 calc(100% - 24px),transparent 100%);
    mask-image:linear-gradient(90deg,transparent 0,#000 24px,#000 calc(100% - 24px),transparent 100%);
  }
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;padding-top:40px;padding-bottom:56px}
  .article-aside{position:static;max-height:none;overflow:visible;grid-template-columns:repeat(2,minmax(0,1fr))}
  .toc-card{grid-column:1 / -1}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .card-grid .card:last-child{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{padding:64px 0}
}
@media (max-width:900px){
  .chips{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{justify-content:space-between}
}
@media (max-width:767px){
  body{font-size:15.5px;padding-bottom:76px}
  .container{padding:0 16px}
  .topbar-inner{min-height:34px;font-size:11.5px}
  .tb-links{display:none}
  .header-inner{min-height:64px;gap:14px}
  .header-actions .link-plain{display:none}
  .header-actions .btn{height:38px;padding:0 14px;font-size:13.5px}
  .breadcrumb{padding-top:18px;font-size:12.5px}
  .breadcrumb li:not(:last-child):not(:first-child){display:none}
  .breadcrumb .current{max-width:60vw}
  .article-head{padding:16px 0 4px}
  .article-head h1{font-size:1.55rem}
  .article-banner .media{aspect-ratio:16/9;border-radius:16px}
  .article-banner .media span{left:16px;bottom:14px;font-size:12.5px}
  .article-body{font-size:15.5px}
  .article-body h2{font-size:19px;margin-top:32px}
  .article-body h3{font-size:17px}
  .article-aside{grid-template-columns:minmax(0,1fr)}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .card-grid .card:last-child{display:flex}
  .section-head h2{font-size:21px}
  .cta-inner{padding:52px 0}
  .cta-inner h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding-bottom:28px}
  .footer-brand{grid-column:1 / -1}
  .footer-brand p{max-width:none}
  .sticky-cta{display:flex}
}
@media (max-width:520px){
  .article-foot-nav .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --purple-700:#2E1A5C;
  --purple-600:#3A2270;
  --purple:#4A2E8F;
  --purple-400:#6D4AE0;
  --purple-050:#EFEAFB;
  --purple-025:#F7F5FE;
  --amber:#FF7A45;
  --amber-dark:#FF6A2E;
  --teal:#12B886;
  --slate:#64748B;
  --ink:#16122B;
  --text:#3D3A52;
  --muted:#7A7691;
  --line:#E7E3F2;
  --bg:#FBFAFE;
  --card:#FFFFFF;
  --dark:#14102A;
  --r-card:16px;
  --r-block:20px;
  --r-btn:10px;
  --sh-card:0 2px 8px rgba(22,18,43,.05);
  --sh-hover:0 10px 28px rgba(74,46,143,.12);
  --sh-float:0 18px 40px rgba(20,16,42,.18);
  --t:220ms cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;background:var(--purple-050)}
a{color:inherit;text-decoration:none;transition:color var(--t),transform var(--t),background var(--t),border-color var(--t)}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3;letter-spacing:.01em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--purple-050);color:var(--purple-600)}
:focus-visible{outline:2px solid var(--purple-400);outline-offset:2px;border-radius:8px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 顶部细条 ============ */
.topbar{background:var(--dark);color:rgba(255,255,255,.72);font-size:12px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:38px}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-links{display:flex;align-items:center;gap:10px;white-space:nowrap}
.topbar-links a:hover{color:#fff}
.topbar .sep{width:1px;height:10px;background:rgba(255,255,255,.25);display:inline-block}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,250,254,.86);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t),box-shadow var(--t);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(22,18,43,.06)}
.header-inner{display:flex;align-items:center;gap:24px;height:70px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--purple-400),var(--purple-700));
  color:#fff;font-size:17px;font-weight:700;letter-spacing:0;
}
.logo-text strong{display:block;font-size:15px;color:var(--ink);line-height:1.25;letter-spacing:.02em}
.logo-text em{display:block;font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.16em}
.chips{display:flex;align-items:center;gap:8px;margin:0 auto;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;height:36px;display:inline-flex;align-items:center;padding:0 16px;
  border-radius:999px;border:1px solid var(--line);font-size:13.5px;color:var(--text);
  transition:all var(--t);
}
.chip:hover{background:var(--purple-050);color:var(--purple-600);border-color:#DDD4F5}
.chip.active{background:var(--purple);border-color:var(--purple);color:#fff;box-shadow:0 0 0 2px rgba(109,74,224,.18)}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.text-link{font-size:14px;color:var(--muted)}
.text-link:hover{color:var(--purple)}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;
}
.menu-btn i{display:block;position:relative;width:16px;height:2px;background:var(--ink);border-radius:2px}
.menu-btn i::before,.menu-btn i::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px}
.menu-btn i::before{top:-5px}
.menu-btn i::after{top:5px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:all var(--t);
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-primary{
  background:linear-gradient(180deg,#FF8A54,var(--amber-dark));
  color:#fff;box-shadow:0 6px 16px rgba(255,106,46,.28);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,106,46,.34)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-outline{border:1px solid var(--purple);color:var(--purple);background:transparent}
.btn-outline:hover{background:var(--purple-050)}
.btn-ghost{border:1px solid rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14)}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--purple)}
.arrow-link span{display:inline-block;transition:transform var(--t)}
.arrow-link:hover span{transform:translateX(4px)}

/* ============ Hero 横幅 ============ */
.hero{padding-top:28px}
.hero-banner{
  position:relative;border-radius:24px;overflow:hidden;min-height:430px;
  display:flex;align-items:flex-end;box-shadow:var(--sh-float);
}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-veil{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(100deg,rgba(20,16,42,.94) 0%,rgba(46,26,92,.86) 44%,rgba(46,26,92,.52) 100%);
}
.hero-content{position:relative;z-index:2;padding:48px 48px 44px;max-width:840px;color:#fff}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#C9C3DC}
.breadcrumb a:hover{color:var(--purple)}
.hero .breadcrumb{color:rgba(255,255,255,.68)}
.hero .breadcrumb a:hover{color:#fff}
.hero .breadcrumb li+li::before{color:rgba(255,255,255,.36)}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  font-size:12.5px;color:#EDE8FB;letter-spacing:.04em;
}
.hero-content h1{color:#fff;font-size:clamp(2rem,4vw,2.9rem);margin:18px 0 14px}
.hero-sub{font-size:16px;line-height:1.8;color:rgba(255,255,255,.82);max-width:640px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.16)}
.hero-stats li strong{display:block;font-size:24px;font-weight:700;color:#fff;letter-spacing:.02em}
.hero-stats li span{font-size:12.5px;color:rgba(255,255,255,.66)}

/* ============ 筛选行 ============ */
.filter-bar{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:26px 0 0}
.filter-label{font-size:13px;color:var(--muted)}
.filter-chips{display:flex;flex-wrap:wrap;gap:8px}
.f-chip{
  height:34px;padding:0 15px;border-radius:999px;border:1px solid var(--line);
  background:#fff;font-size:13px;color:var(--text);transition:all var(--t);
}
.f-chip:hover{border-color:#CFC4EE;color:var(--purple)}
.f-chip.active{background:var(--purple-050);border-color:#CDC0F0;color:var(--purple-600);font-weight:600}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:780px;margin-bottom:40px}
.section-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  color:var(--purple);letter-spacing:.08em;margin-bottom:12px;
}
.eyebrow::before{content:"";width:14px;height:6px;border-radius:3px;background:var(--amber)}
.section-head h2{font-size:clamp(1.4rem,2.4vw,1.9rem);margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15px;line-height:1.85}
.tag{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--purple-050);color:var(--purple-600);font-size:12px;font-weight:600;
}
.tag-teal{background:rgba(18,184,134,.12);color:#0E9C71}
.tag-amber{background:rgba(255,122,69,.14);color:#D9531F}

/* ============ 图文卡片流（2 列） ============ */
.article-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.a-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;transition:all var(--t);
}
.a-card:hover{box-shadow:var(--sh-hover);border-color:#DCD2F5;transform:translateY(-2px)}
.a-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--purple-050)}
.a-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.a-card:hover .a-thumb img{transform:scale(1.03)}
.a-thumb .tag{position:absolute;left:16px;top:16px;background:rgba(255,255,255,.94);color:var(--purple-600)}
.a-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.a-body h3{font-size:18px;line-height:1.45}
.a-body p{font-size:14.5px;line-height:1.85}
.a-points{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.a-points li{position:relative;padding-left:18px;font-size:13.5px;color:var(--muted);line-height:1.7}
.a-points li::before{content:"";position:absolute;left:2px;top:9px;width:6px;height:6px;border-radius:50%;background:var(--purple-400)}
.a-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:16px;border-top:1px dashed var(--line);
  font-size:12.5px;color:var(--muted);
}

/* ============ 流程步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 22px 24px;transition:all var(--t);
}
.step:hover{box-shadow:var(--sh-hover);border-color:#DCD2F5;transform:translateY(-2px)}
.step-no{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--purple-050);color:var(--purple-600);font-weight:700;font-size:14px;margin-bottom:16px;
}
.step h3{font-size:16.5px;margin-bottom:10px}
.step p{font-size:14px;color:var(--muted);line-height:1.8}

/* ============ 适用场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene{
  background:var(--card);border:1px solid var(--line);border-left:4px solid var(--purple-400);
  border-radius:var(--r-card);padding:26px 24px;transition:all var(--t);
}
.scene:hover{box-shadow:var(--sh-hover);transform:translateY(-2px)}
.scene h3{font-size:17px;margin-bottom:10px}
.scene p{font-size:14px;line-height:1.85;color:var(--text)}
.scene-teal{border-left-color:var(--teal)}
.scene-amber{border-left-color:var(--amber)}

/* ============ 指标条 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:var(--dark);border-radius:var(--r-block);padding:38px 40px;
  color:#fff;position:relative;overflow:hidden;
}
.metrics::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:16px 16px;
}
.metric{position:relative;z-index:1}
.metric strong{display:block;font-size:30px;font-weight:700;color:#fff;letter-spacing:.02em}
.metric span{font-size:13px;color:rgba(255,255,255,.66)}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:1fr 1.7fr;gap:48px;align-items:start}
.faq-aside{position:sticky;top:96px}
.faq-aside .section-head{margin-bottom:20px}
.faq-aside .aside-note{
  margin-top:20px;padding:18px 20px;border-radius:14px;background:var(--purple-025);
  border:1px solid var(--line);font-size:13.5px;color:var(--muted);line-height:1.8;
}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;transition:all var(--t)}
.faq-item[open]{border-color:#CFC4EE;box-shadow:var(--sh-card);background:#fff}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 20px;display:flex;align-items:flex-start;
  justify-content:space-between;gap:16px;font-size:15.5px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:400;color:var(--purple);line-height:1;
  transition:transform var(--t);flex-shrink:0;margin-top:2px;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open] summary{color:var(--purple-600)}
.faq-body{padding:0 20px 20px;font-size:14.5px;line-height:1.9;color:var(--text)}

/* ============ 深色 CTA ============ */
.cta-block{
  background:var(--dark);border-radius:var(--r-block);padding:56px;
  position:relative;overflow:hidden;color:#fff;
}
.cta-block::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:16px 16px;
}
.cta-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:center;position:relative;z-index:1}
.cta-grid h2{color:#fff;font-size:clamp(1.4rem,2.4vw,1.9rem);margin-bottom:14px}
.cta-grid .cta-desc{color:rgba(255,255,255,.72);font-size:15px;line-height:1.85}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:10px}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:rgba(255,255,255,.84);line-height:1.7}
.cta-points svg{flex-shrink:0;margin-top:5px}
.cta-card{background:#fff;border-radius:var(--r-block);padding:30px 28px;box-shadow:var(--sh-float)}
.cta-card h3{font-size:17px;margin-bottom:6px;color:var(--ink)}
.cta-card .cta-card-note{font-size:13px;color:var(--muted);margin-bottom:20px}
.cta-rows{display:flex;flex-direction:column;gap:12px;margin-bottom:22px}
.cta-rows li{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;padding-bottom:12px;border-bottom:1px dashed var(--line)}
.cta-rows li:last-child{border-bottom:0;padding-bottom:0}
.cta-rows span:last-child{font-weight:600;color:var(--purple-600)}

/* ============ 相关分类 ============ */
.related-section{padding:0 0 88px}
.related-box{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-block);
  padding:28px 32px;display:flex;align-items:center;gap:20px;flex-wrap:wrap;
}
.related-box h2{font-size:16px;flex-shrink:0}
.cat-chips{display:flex;flex-wrap:wrap;gap:10px}
.cat-chip{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);font-size:14px;color:var(--text);transition:all var(--t);
}
.cat-chip:hover{background:var(--purple-050);color:var(--purple-600);border-color:#DDD4F5}
.cat-chip.active{background:var(--purple);border-color:var(--purple);color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .logo-text strong{color:#fff}
.footer-brand .logo-text em{color:rgba(255,255,255,.55)}
.footer-brand .logo-mark{background:linear-gradient(135deg,#6D4AE0,#2E1A5C)}
.footer-brand p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6);margin-top:16px;max-width:330px}
.f-col h4{font-size:13px;color:#fff;margin-bottom:16px;letter-spacing:.06em}
.f-col ul{display:flex;flex-direction:column;gap:10px;font-size:14px}
.f-col li a{display:inline-block}
.f-col li a:hover{color:#fff;transform:translateX(2px)}
.f-contact li{display:flex;align-items:center;gap:8px;font-size:13.5px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 28px;font-size:12.5px;color:rgba(255,255,255,.5);
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}
.fb-links a:hover{color:#fff}

/* ============ 抽屉与移动条 ============ */
.drawer-mask{
  position:fixed;inset:0;z-index:80;background:rgba(20,16,42,.45);
  opacity:0;pointer-events:none;transition:opacity var(--t);
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;width:min(84vw,340px);
  background:#fff;padding:24px 22px;overflow-y:auto;
  transform:translateX(100%);transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  box-shadow:-12px 0 40px rgba(20,16,42,.16);
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:16px;color:var(--muted);background:#fff;
}
.drawer-nav{display:flex;flex-direction:column;gap:10px;margin:22px 0 24px}
.drawer-nav a{
  padding:12px 14px;border-radius:12px;border:1px solid var(--line);
  font-size:14.5px;color:var(--text);
}
.drawer-nav a:hover{background:var(--purple-050);border-color:#DDD4F5;color:var(--purple-600)}
.drawer-nav a.active{background:var(--purple-050);border-color:#CDC0F0;color:var(--purple-600);font-weight:600}
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  align-items:center;justify-content:space-between;gap:12px;
  padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  background:rgba(251,250,254,.96);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
}
.mobile-bar .mb-text strong{display:block;font-size:13.5px;color:var(--ink)}
.mobile-bar .mb-text span{font-size:11.5px;color:var(--muted)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 28px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .chips{display:none}
  .menu-btn{display:inline-flex}
  .header-actions .text-link{display:none}
  .section{padding:64px 0}
  .section-tight{padding:48px 0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .cta-block{padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .hero-content{padding:40px}
}
@media (max-width:767px){
  body{font-size:15px;padding-bottom:64px}
  .container{padding:0 16px}
  .topbar-note{display:none}
  .topbar-inner{justify-content:flex-end}
  .header-inner{height:62px;gap:12px}
  .hero{padding-top:16px}
  .hero-banner{border-radius:18px;min-height:0}
  .hero-content{padding:28px 22px 30px}
  .hero-stats{gap:22px;margin-top:26px;padding-top:20px}
  .hero-stats li strong{font-size:20px}
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .article-grid{grid-template-columns:1fr;gap:20px}
  .steps{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .metrics{grid-template-columns:repeat(2,1fr);padding:28px 22px;gap:24px}
  .metric strong{font-size:24px}
  .cta-block{padding:28px 22px;border-radius:18px}
  .cta-card{padding:24px 20px}
  .related-box{padding:22px;gap:14px}
  .related-section{padding:0 0 48px}
  .mobile-bar{display:flex}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:519px){
  .hero-cta .btn{width:100%}
  .metrics{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .cat-chip{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --primary:#4A2E8F;
  --primary-600:#3A2270;
  --primary-400:#6D4AE0;
  --primary-50:#EFEAFB;
  --primary-100:#E2D9F7;
  --amber:#FF7A45;
  --amber-600:#FF6A2E;
  --amber-50:#FFF0E9;
  --green:#12B886;
  --slate:#64748B;
  --ink:#16122B;
  --text:#3D3A52;
  --muted:#7A7691;
  --border:#E7E3F2;
  --bg:#FBFAFE;
  --bg-soft:#F7F5FE;
  --white:#FFFFFF;
  --dark:#14102A;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --sh-1:0 2px 8px rgba(22,18,43,.05);
  --sh-2:0 10px 28px rgba(74,46,143,.12);
  --sh-3:0 18px 40px rgba(20,16,42,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --maxw:1200px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3;letter-spacing:.01em;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
img{max-width:100%;display:block;}
button,input,select{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
::selection{background:var(--primary-100);color:var(--primary-600);}

/* ============ 容器 ============ */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;}
.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;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(251,250,254,.86);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{border-bottom-color:var(--border);box-shadow:0 4px 18px rgba(22,18,43,.06);}
.topbar{background:var(--dark);color:rgba(255,255,255,.72);font-size:12.5px;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px;}
.topbar-left{display:flex;align-items:center;gap:8px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(18,184,134,.18);flex:none;}
.topbar-right{display:flex;align-items:center;gap:16px;flex:none;}
.topbar-right a:hover{color:#fff;}

.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:flex;align-items:center;gap:10px;flex:none;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;flex:none;
  background:linear-gradient(135deg,#5B39B5,#3A2270);
  color:#fff;font-size:17px;font-weight:700;
  display:grid;place-items:center;
  box-shadow:0 6px 16px rgba(74,46,143,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.16;}
.logo-text strong{font-size:15.5px;color:var(--ink);font-weight:700;letter-spacing:.01em;}
.logo-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.08em;}

.chips{
  display:flex;align-items:center;gap:8px;margin-left:auto;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  padding:4px 2px;
}
.chips::-webkit-scrollbar{display:none;}
.chip{
  height:36px;display:inline-flex;align-items:center;
  padding:0 16px;border-radius:999px;
  border:1px solid var(--border);background:transparent;
  color:var(--text);font-size:14px;white-space:nowrap;flex:none;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.chip:hover{background:var(--primary-50);border-color:var(--primary-100);color:var(--primary-600);}
.chip.active{
  background:var(--primary);border-color:var(--primary);color:#fff;
  box-shadow:0 0 0 2px rgba(74,46,143,.16);
}
.nav-actions{display:flex;align-items:center;gap:14px;flex:none;}
.nav-login{font-size:14px;color:var(--text);}
.nav-login:hover{color:var(--primary);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--border);background:#fff;
  align-items:center;justify-content:center;flex:none;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* 抽屉 */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(20,16,42,.42);
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:90;
}
.drawer-overlay.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:84vw;
  background:#fff;z-index:95;padding:24px 20px;
  transform:translateX(102%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;gap:14px;overflow-y:auto;
  box-shadow:-12px 0 40px rgba(20,16,42,.18);
}
.drawer.open{transform:translateX(0);}
.drawer .chip{height:44px;justify-content:flex-start;width:100%;}
.drawer-close{align-self:flex-end;font-size:13px;color:var(--muted);}
.drawer .btn{width:100%;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;border:1px solid transparent;
  transition:transform .2s var(--ease),filter .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#FF8A54,#FF6A2E);
  color:#fff;box-shadow:0 8px 20px rgba(255,106,46,.24);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,106,46,.3);}
.btn-primary:active{transform:translateY(0);filter:brightness(.98);}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:var(--primary-50);}
.btn-light{background:#fff;color:var(--primary-600);border-color:#fff;}
.btn-light:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgba(0,0,0,.22);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.7);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;filter:none;box-shadow:none;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;}
.link-arrow svg{transition:transform .2s var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ============ 页面标题区 ============ */
.page-head{
  position:relative;
  padding:40px 0 56px;
  border-bottom:1px solid var(--border);
  background:
    radial-gradient(760px 340px at 8% -10%, rgba(74,46,143,.12), transparent 62%),
    radial-gradient(520px 260px at 92% 0%, rgba(255,122,69,.10), transparent 60%),
    linear-gradient(180deg,#F4F0FD 0%, #FBFAFE 100%);
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-size:13px;color:var(--muted);margin-bottom:22px;
}
.breadcrumb li{display:flex;align-items:center;gap:6px;}
.breadcrumb li+li::before{content:"/";color:#C9C3DC;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb [aria-current]{color:var(--primary);font-weight:600;}

.badge{
  display:inline-flex;align-items:center;gap:7px;
  height:28px;padding:0 13px;border-radius:999px;
  background:var(--white);border:1px solid var(--primary-100);
  color:var(--primary-600);font-size:12.5px;font-weight:600;letter-spacing:.02em;
  box-shadow:var(--sh-1);
}
.badge i{width:6px;height:6px;border-radius:50%;background:var(--amber);display:block;}
.page-head h1{
  margin:18px 0 0;
  font-size:clamp(1.75rem,3.4vw,2.75rem);
  line-height:1.3;
  color:var(--ink);
  max-width:16em;
}
.page-head .lead{
  margin-top:16px;max-width:52em;
  font-size:16.5px;line-height:1.9;color:var(--text);
}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.stat-row{display:flex;flex-wrap:wrap;gap:16px 48px;margin-top:34px;}
.stat-row li{min-width:104px;}
.stat-row strong{
  display:block;font-size:27px;font-weight:800;color:var(--ink);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;line-height:1.2;
}
.stat-row strong em{font-style:normal;font-size:14px;color:var(--muted);font-weight:600;margin-left:3px;}
.stat-row span{font-size:12.5px;color:var(--muted);}

/* ============ 板块通用 ============ */
.section{padding:88px 0;}
.section-alt{background:var(--bg-soft);}
.section-dark{
  background-color:var(--dark);
  background-image:radial-gradient(rgba(255,255,255,.075) 1px, transparent 1px);
  background-size:16px 16px;
  color:rgba(255,255,255,.78);
  padding:88px 0;
}
.section-dark h2,.section-dark h3{color:#fff;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(1.375rem,2.4vw,1.875rem);}
.section-head h2::before{
  content:"";display:block;width:6px;height:6px;border-radius:2px;
  background:var(--amber);margin-bottom:14px;
}
.section-head p{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--text);}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.section-head--row .sh-text{max-width:700px;}

/* ============ 权益对比表 ============ */
.table-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
}
.table-scroll{overflow-x:auto;scrollbar-width:thin;}
.benefit-table{width:100%;min-width:880px;}
.benefit-table caption{text-align:left;}
.benefit-table thead th{
  background:var(--primary-50);color:var(--primary-600);
  font-size:13.5px;font-weight:700;letter-spacing:.02em;
  padding:16px 18px;text-align:center;white-space:nowrap;
  border-bottom:1px solid var(--primary-100);
  position:relative;
}
.benefit-table thead th:first-child{text-align:left;padding-left:22px;}
.benefit-table tbody th{
  position:sticky;left:0;z-index:2;background:#fff;
  text-align:left;font-weight:600;font-size:14.5px;color:var(--ink);
  padding:15px 18px 15px 19px;
  border-bottom:1px solid var(--border);
  border-left:3px solid var(--primary-100);
  white-space:nowrap;
}
.benefit-table tbody td{
  text-align:center;font-size:14px;color:var(--text);
  padding:15px 18px;border-bottom:1px solid var(--border);
  white-space:nowrap;
}
.benefit-table tbody tr:last-child th,
.benefit-table tbody tr:last-child td{border-bottom:none;}
.benefit-table tbody tr:nth-child(even) th,
.benefit-table tbody tr:nth-child(even) td{background:#F7F5FE;}
.benefit-table tbody tr:hover th,
.benefit-table tbody tr:hover td{background:#F1ECFC;}
.col-rec{box-shadow:inset 2px 0 0 var(--primary-400),inset -2px 0 0 var(--primary-400);}
.benefit-table tbody td.col-rec{background:rgba(74,46,143,.055);}
.rec-tag{
  display:inline-block;margin-right:7px;padding:1px 8px;border-radius:999px;
  background:var(--amber);color:#fff;font-size:11px;font-weight:700;
  vertical-align:1px;letter-spacing:.02em;
}
.mark-yes{
  display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;
  background:rgba(18,184,134,.13);color:var(--green);font-size:13px;font-weight:800;line-height:1;
}
.mark-no{
  display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;
  background:#EFEDF6;color:#A9A4BC;font-size:13px;font-weight:700;line-height:1;
}
.val{font-weight:600;color:var(--primary-600);font-variant-numeric:tabular-nums;}
.val-plain{color:var(--text);font-size:13.5px;}
.table-foot{
  padding:16px 22px;background:#FCFBFE;border-top:1px solid var(--border);
  font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;
}
.table-foot strong{color:var(--primary-600);font-weight:700;}
.scroll-hint{
  display:none;font-size:12.5px;color:var(--muted);
  padding:10px 22px 0;letter-spacing:.02em;
}

/* ============ 等级卡片 ============ */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.tier-card{
  position:relative;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);padding:26px 24px 22px;
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.tier-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:var(--tier,var(--primary-400));
}
.tier-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--primary-100);}
.tier-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.tier-head h3{font-size:19px;}
.tier-chip{
  font-size:12px;padding:3px 10px;border-radius:999px;
  background:color-mix(in srgb,var(--tier,#6D4AE0) 12%,#fff);
  color:var(--tier,#6D4AE0);font-weight:600;white-space:nowrap;
}
.tier-desc{margin-top:10px;font-size:14px;line-height:1.8;color:var(--muted);min-height:50px;}
.tier-points{margin-top:18px;display:flex;flex-direction:column;gap:11px;}
.tier-points li{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:var(--text);line-height:1.7;}
.tier-points svg{flex:none;margin-top:4px;color:var(--tier,#6D4AE0);}
.tier-foot{margin-top:22px;padding-top:18px;border-top:1px solid var(--border);}
.bar{height:6px;border-radius:999px;background:#F0EDF8;overflow:hidden;}
.bar>span{display:block;height:100%;border-radius:999px;background:var(--tier,#6D4AE0);}
.tier-note{display:block;margin-top:9px;font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums;}

/* ============ 适用场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  display:flex;flex-direction:column;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--primary-100);}
.scene-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EFEDF6;}
.scene-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.scene-card:hover .scene-thumb img{transform:scale(1.03);}
.scene-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.scene-body h3{font-size:17.5px;}
.scene-body p{font-size:14px;line-height:1.8;color:var(--text);}
.scene-meta{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--primary-50);color:var(--primary-600);font-size:12px;font-weight:600;
}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;counter-reset:step;}
.steps li{
  position:relative;padding:26px 26px 26px 0;border-top:2px solid var(--border);
}
.steps li::after{
  content:"";position:absolute;top:-7px;left:0;width:12px;height:12px;border-radius:50%;
  background:#fff;border:2px solid var(--primary-400);
}
.steps li:nth-child(1)::after{background:var(--primary-400);}
.steps li h3{font-size:17px;margin-top:18px;}
.steps li p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--text);max-width:34em;}
.step-num{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.12em;
  color:var(--primary-600);background:var(--primary-50);
  padding:3px 10px;border-radius:999px;font-variant-numeric:tabular-nums;
}
.steps li + li{padding-left:26px;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-side h2{font-size:clamp(1.375rem,2.4vw,1.875rem);}
.faq-side h2::before{content:"";display:block;width:6px;height:6px;border-radius:2px;background:var(--amber);margin-bottom:14px;}
.faq-side p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text);}
.faq-side .link-arrow{margin-top:18px;}
.faq-list{display:flex;flex-direction:column;gap:10px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:14px;
  overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item[open]{border-color:var(--primary-100);box-shadow:var(--sh-1);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:15.5px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-icon{
  position:relative;flex:none;width:20px;height:20px;border-radius:50%;
  background:var(--primary-50);color:var(--primary);
  transition:transform .24s var(--ease),background .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:2px;}
.faq-icon::after{width:2px;height:10px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff;}
.faq-answer{padding:0 20px 20px;font-size:14.5px;line-height:1.85;color:var(--text);}

/* ============ CTA 深色区 ============ */
.cta-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;}
.cta-copy h2{font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.35;}
.cta-copy p{margin-top:16px;font-size:15.5px;line-height:1.9;color:rgba(255,255,255,.75);}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.cta-points li{display:flex;align-items:flex-start;gap:11px;font-size:15px;color:rgba(255,255,255,.9);}
.cta-points svg{flex:none;margin-top:4px;color:var(--green);}
.join-card{
  background:#fff;border-radius:var(--r-lg);padding:32px 30px;
  box-shadow:var(--sh-3);color:var(--text);
}
.join-card h3{font-size:19px;color:var(--ink);}
.join-card .join-sub{margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.75;}
.join-form{margin-top:22px;display:flex;flex-direction:column;gap:16px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:7px;}
.field input[type="tel"],
.field select{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--border);background:#FCFBFE;color:var(--ink);
  font-size:14.5px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 15px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--primary);background:#fff;
  box-shadow:0 0 0 3px rgba(74,46,143,.12);
}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);line-height:1.7;}
.check input{appearance:none;flex:none;width:18px;height:18px;margin-top:3px;border-radius:6px;border:1px solid var(--border);background:#fff;transition:background .2s var(--ease),border-color .2s var(--ease);position:relative;cursor:pointer;}
.check input:checked{background:var(--primary);border-color:var(--primary);}
.check input:checked::after{content:"";position:absolute;left:5px;top:2px;width:5px;height:9px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg);}
.check a{color:var(--primary);font-weight:600;}
.join-form .btn{width:100%;}
.form-note{font-size:12.5px;color:var(--muted);text-align:center;}
.form-success{
  display:none;align-items:center;gap:10px;margin-top:16px;padding:13px 16px;
  background:rgba(18,184,134,.1);border:1px solid rgba(18,184,134,.28);
  border-radius:var(--r-btn);color:#0E8E68;font-size:13.5px;font-weight:600;
}
.form-success.show{display:flex;}

/* ============ 相关分类 ============ */
.rel-chips{display:flex;flex-wrap:wrap;gap:12px;}
.rel-chips a{
  display:inline-flex;align-items:center;gap:9px;
  padding:12px 20px;border-radius:999px;border:1px solid var(--border);
  background:#fff;font-size:14.5px;font-weight:600;color:var(--ink);
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
}
.rel-chips a:hover{transform:translateY(-2px);border-color:var(--primary-100);color:var(--primary-600);box-shadow:var(--sh-2);}
.rel-chips a i{width:7px;height:7px;border-radius:50%;background:var(--amber);display:block;}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 28px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-mark{background:linear-gradient(135deg,#6D4AE0,#3A2270);box-shadow:none;}
.footer-brand .logo-text strong{color:#fff;}
.footer-brand .logo-text em{color:rgba(255,255,255,.55);}
.footer-brand p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:34em;}
.f-col h4{font-size:13px;font-weight:600;color:#fff;letter-spacing:.04em;margin-bottom:16px;}
.f-col ul{display:flex;flex-direction:column;gap:11px;}
.f-col a{font-size:13.5px;color:rgba(255,255,255,.68);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease);}
.f-col a:hover{color:#fff;transform:translateX(2px);}
.f-contact li{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:rgba(255,255,255,.68);line-height:1.75;}
.f-contact svg{flex:none;margin-top:4px;color:rgba(255,255,255,.45);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.52);
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px;}
.fb-links a{color:rgba(255,255,255,.6);}
.fb-links a:hover{color:#fff;}

/* 移动端吸底条 */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.94);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-top:1px solid var(--border);
  padding:9px 16px calc(9px + env(safe-area-inset-bottom));
}
.mobile-bar .btn{width:100%;height:44px;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 28px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:64px 0;}
  .section-dark{padding:64px 0;}
  .nav-wrap{height:66px;gap:14px;}
  .chips{gap:6px;}
  .tier-grid{grid-template-columns:repeat(2,1fr);}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr;}
  .steps li{padding:22px 0 22px 0;border-top:1px solid var(--border);}
  .steps li + li{padding-left:0;}
  .steps li::after{left:0;}
  .steps li h3{margin-top:12px;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .join-card{padding:26px 22px;}
}
@media (max-width:767px){
  body{font-size:15px;line-height:1.85;}
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section-dark{padding:48px 0;}
  .topbar-right{display:none;}
  .chips{display:none;}
  .nav-toggle{display:flex;}
  .nav-actions .btn{display:none;}
  .nav-actions .nav-login{display:none;}
  .page-head{padding:26px 0 40px;}
  .page-head .lead{font-size:15px;}
  .stat-row{gap:14px 30px;margin-top:26px;}
  .stat-row strong{font-size:23px;}
  .head-actions .btn{flex:1 1 auto;}
  .tier-grid{grid-template-columns:1fr;gap:18px;}
  .scene-grid{grid-template-columns:1fr;gap:18px;}
  .tier-desc{min-height:0;}
  .scroll-hint{display:block;}
  .benefit-table tbody th{position:static;border-left-width:3px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .mobile-bar{display:block;}
  .site-footer{padding-bottom:88px;}
  .rel-chips a{width:100%;justify-content:flex-start;}
  .join-card{padding:22px 18px;}
  .section-head{margin-bottom:28px;}
}
@media (max-width:479px){
  .page-head h1{font-size:1.6rem;}
  .stat-row{gap:12px 22px;}
  .chips{gap:6px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;}
}

/* roulang page: category3 */
:root{
  --brand:#4A2E8F;--brand-600:#3A2270;--brand-100:#EFEAFB;--brand-50:#F7F5FE;
  --accent:#FF7A45;--accent-600:#FF6A2E;--accent-100:#FFF0E8;
  --mint:#12B886;--mint-100:#E6FAF3;--amber:#F2A33C;--slate:#64748B;
  --ink:#16122B;--body:#3D3A52;--muted:#7A7691;
  --line:#E7E3F2;--bg:#FBFAFE;--card:#FFFFFF;--dark:#14102A;
  --r-card:16px;--r-block:20px;--r-btn:10px;--r-chip:999px;
  --sh-1:0 2px 8px rgba(22,18,43,.05);
  --sh-2:0 10px 28px rgba(74,46,143,.12);
  --sh-3:0 18px 40px rgba(20,16,42,.18);
  --ease:cubic-bezier(.2,.7,.3,1);--t:220ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--body);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.32;letter-spacing:.01em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--brand);text-decoration:none;transition:color var(--t) var(--ease),transform var(--t) var(--ease)}
a:hover{color:var(--brand-600)}
img{max-width:100%;display:block;background:#F1EEF9}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease),color var(--t) var(--ease),filter var(--t) var(--ease)}
.btn-primary{background:linear-gradient(135deg,#FF8A54,#FF6A2E);color:#fff;box-shadow:0 8px 18px rgba(255,106,46,.24)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 24px rgba(255,106,46,.3);color:#fff}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:var(--brand-100);color:var(--brand)}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;background:rgba(255,255,255,.06)}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:9px}
.btn-block{width:100%}
.btn[disabled],.btn.is-loading{opacity:.66;pointer-events:none}
.link-plain{font-size:14px;color:var(--body)}
.link-plain:hover{color:var(--brand)}

/* ---------- 顶部细条 + 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(251,250,254,.86);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid transparent;transition:box-shadow var(--t) var(--ease),border-color var(--t) var(--ease),background var(--t) var(--ease)}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 22px rgba(22,18,43,.07);background:rgba(251,250,254,.95)}
.topbar{border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:38px}
.topbar-note{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-note i{width:6px;height:6px;border-radius:50%;background:var(--mint);display:inline-block;box-shadow:0 0 0 3px rgba(18,184,134,.16)}
.topbar-links{display:flex;align-items:center;gap:10px}
.topbar-links a{color:var(--muted)}
.topbar-links a:hover{color:var(--brand)}
.nav-inner{display:flex;align-items:center;gap:24px;height:70px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(140deg,#5A39A8,#6D4AE0);color:#fff;display:grid;place-items:center;font-size:18px;font-weight:700;box-shadow:0 6px 16px rgba(74,46,143,.28)}
.logo-text{display:flex;flex-direction:column;line-height:1.16}
.logo-text strong{font-size:15px;color:var(--ink);letter-spacing:.01em}
.logo-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.14em}
.chips{display:flex;align-items:center;justify-content:center;gap:8px;flex:1;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:4px 2px}
.chips::-webkit-scrollbar{display:none}
.chip{display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:var(--r-chip);border:1px solid var(--line);color:var(--body);font-size:13.5px;white-space:nowrap;background:transparent;transition:background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease)}
.chip:hover{background:var(--brand-100);color:var(--brand);border-color:#D9CEF5}
.chip.active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 0 0 2px rgba(109,74,224,.18)}
.nav-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.menu-toggle{display:none;width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;color:var(--ink)}
.menu-toggle:hover{border-color:#D9CEF5;color:var(--brand)}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:90;background:rgba(20,16,42,.45);opacity:0;visibility:hidden;transition:opacity var(--t) var(--ease),visibility var(--t) var(--ease)}
.drawer.open{opacity:1;visibility:visible}
.drawer-panel{position:absolute;top:0;right:0;height:100%;width:min(320px,86%);background:#fff;padding:22px;transform:translateX(100%);transition:transform 240ms var(--ease);overflow-y:auto;display:flex;flex-direction:column;gap:10px}
.drawer.open .drawer-panel{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.drawer-panel .chip{justify-content:center;height:44px;font-size:14.5px}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--line);background:#fff}
.drawer-close:hover{border-color:#D9CEF5;color:var(--brand)}

/* ---------- 横幅 ---------- */
.page-banner{position:relative;background-size:cover;background-position:center;background-color:#241A4A}
.banner-mask{position:absolute;inset:0;background:linear-gradient(104deg,rgba(20,16,42,.94) 0%,rgba(58,34,112,.84) 48%,rgba(74,46,143,.6) 100%)}
.banner-dots{position:absolute;right:0;top:0;width:42%;height:100%;background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);background-size:16px 16px;opacity:.5}
.page-banner .container{position:relative;z-index:2;padding-top:26px;padding-bottom:104px}
.crumb{font-size:13px;color:rgba(255,255,255,.7)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:rgba(255,255,255,.42)}
.crumb a{color:rgba(255,255,255,.78)}
.crumb a:hover{color:#fff}
.crumb [aria-current="page"]{color:#D9CEF5}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-top:26px;padding:6px 14px;border-radius:var(--r-chip);background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);color:#fff;font-size:12.5px;letter-spacing:.06em}
.page-banner h1{margin-top:18px;font-size:clamp(1.9rem,3.7vw,2.6rem);color:#fff;letter-spacing:.02em}
.banner-sub{margin-top:16px;max-width:760px;font-size:15.5px;line-height:1.9;color:rgba(255,255,255,.82)}
.banner-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.banner-stat{padding:12px 18px;border-radius:14px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);backdrop-filter:blur(4px)}
.banner-stat b{display:block;font-size:20px;color:#fff;font-variant-numeric:tabular-nums;line-height:1.2}
.banner-stat span{font-size:12.5px;color:rgba(255,255,255,.72)}

/* ---------- 筛选条 ---------- */
.filter-bar{margin-top:-56px;position:relative;z-index:5}
.filter-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-block);box-shadow:var(--sh-2);padding:20px 24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.filter-label{font-size:13px;color:var(--muted);flex:0 0 auto}
.filter-chips{display:flex;flex-wrap:wrap;gap:8px}
.fchip{height:34px;padding:0 15px;border-radius:var(--r-chip);border:1px solid var(--line);background:#fff;color:var(--body);font-size:13px;transition:background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease)}
.fchip:hover{background:var(--brand-50);border-color:#D9CEF5;color:var(--brand)}
.fchip.active{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- 板块通用 ---------- */
.section{padding:76px 0}
.section-tight{padding:52px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(1.35rem,2.4vw,1.75rem);position:relative;padding-left:16px}
.sec-head h2::before{content:"";position:absolute;left:0;top:.28em;width:6px;height:6px;border-radius:2px;background:var(--accent)}
.sec-head p{margin-top:10px;font-size:14.5px;color:var(--muted);max-width:720px}
.sec-link{font-size:14px;display:inline-flex;align-items:center;gap:6px}
.sec-link::after{content:"→";transition:transform var(--t) var(--ease)}
.sec-link:hover::after{transform:translateX(4px)}

/* ---------- 置顶公告卡 ---------- */
.feature-card{display:grid;grid-template-columns:1.05fr 1fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-block);overflow:hidden;box-shadow:var(--sh-1)}
.feature-media{position:relative;overflow:hidden;background:#F1EEF9}
.feature-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;transition:transform 400ms var(--ease)}
.feature-card:hover .feature-media img{transform:scale(1.03)}
.feature-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,16,42,0) 40%,rgba(20,16,42,.5) 100%)}
.badge-top{position:absolute;left:18px;top:18px;z-index:2;padding:5px 12px;border-radius:var(--r-chip);background:var(--accent);color:#fff;font-size:12px;font-weight:600}
.feature-body{padding:32px 34px;display:flex;flex-direction:column;gap:14px}
.meta-row{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);flex-wrap:wrap}
.tag{font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--r-chip);background:var(--brand-100);color:var(--brand)}
.tag.mint{background:var(--mint-100);color:#0E9C74}
.tag.amber{background:#FFF4E6;color:#B26A12}
.tag.slate{background:#F1F5F9;color:var(--slate)}
.feature-body h2{font-size:clamp(1.15rem,2vw,1.45rem)}
.feature-body p{font-size:14.5px;line-height:1.85;color:var(--body)}
.check-list{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.check-list li{position:relative;padding-left:24px;font-size:14px;color:var(--body)}
.check-list li::before{content:"";position:absolute;left:0;top:.55em;width:14px;height:14px;border-radius:50%;background:var(--mint-100);box-shadow:inset 0 0 0 3px #fff}
.check-list li::after{content:"";position:absolute;left:4px;top:calc(.55em + 4px);width:5px;height:2.5px;border-left:1.6px solid var(--mint);border-bottom:1.6px solid var(--mint);transform:rotate(-45deg)}
.check-list.on-dark li{color:rgba(255,255,255,.86)}
.check-list.on-dark li::before{background:rgba(18,184,134,.28);box-shadow:inset 0 0 0 3px var(--dark)}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;display:flex;flex-direction:column;gap:18px;margin-top:8px}
.timeline::before{content:"";position:absolute;left:103px;top:14px;bottom:14px;width:2px;border-radius:2px;background:linear-gradient(180deg,var(--brand),#D9CEF5)}
.tl-item{position:relative;display:grid;grid-template-columns:88px 1fr;gap:32px}
.tl-item::before{content:"";position:absolute;left:97px;top:26px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--brand);z-index:2;transition:transform var(--t) var(--ease)}
.tl-item:hover::before{transform:scale(1.14)}
.tl-date{padding-top:20px;text-align:right;display:flex;flex-direction:column}
.tl-date .d{font-size:20px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2}
.tl-date .y{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.tl-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px 24px;box-shadow:var(--sh-1);transition:box-shadow var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease)}
.tl-card:hover{border-color:#D9CEF5;box-shadow:var(--sh-2);transform:translateY(-2px)}
.tl-card h3{font-size:17px;margin-top:2px}
.tl-card p{margin-top:10px;font-size:14px;line-height:1.85;color:var(--body)}
.tl-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tl-points li{font-size:12.5px;color:var(--body);background:var(--brand-50);border:1px solid var(--line);border-radius:var(--r-chip);padding:4px 11px}
.tl-more{margin-top:29px}
.tl-more .btn{width:100%}

/* ---------- 数据卡 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);transition:box-shadow var(--t) var(--ease),transform var(--t) var(--ease)}
.metric:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.metric .num{font-size:30px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.1}
.metric .num small{font-size:14px;font-weight:600;color:var(--muted);margin-left:4px}
.metric .lbl{margin-top:8px;font-size:13px;color:var(--muted)}
.metric .bar{margin-top:14px;height:4px;border-radius:4px;background:var(--brand-50);overflow:hidden}
.metric .bar i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--brand),#6D4AE0)}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);position:relative;overflow:hidden}
.step .idx{width:34px;height:34px;border-radius:10px;background:var(--brand-100);color:var(--brand);display:grid;place-items:center;font-weight:700;font-size:14px;font-variant-numeric:tabular-nums}
.step h3{margin-top:14px;font-size:16.5px}
.step p{margin-top:8px;font-size:14px;color:var(--body);line-height:1.8}
.step::after{content:"";position:absolute;right:-24px;bottom:-24px;width:86px;height:86px;border-radius:50%;background:var(--brand-50)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:40px}
.faq-aside h2{font-size:clamp(1.3rem,2.2vw,1.6rem);position:relative;padding-left:16px}
.faq-aside h2::before{content:"";position:absolute;left:0;top:.28em;width:6px;height:6px;border-radius:2px;background:var(--accent)}
.faq-aside p{margin-top:14px;font-size:14px;color:var(--muted);line-height:1.85}
.faq-aside .btn{margin-top:20px}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease)}
.faq-item[open]{border-color:#CFC0F1;box-shadow:var(--sh-2)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 56px 18px 20px;position:relative;font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.6}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);width:22px;height:22px;border-radius:50%;background:var(--brand-50);color:var(--brand);display:grid;place-items:center;font-size:16px;font-weight:400;transition:transform var(--t) var(--ease),background var(--t) var(--ease)}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);background:var(--brand-100)}
.faq-item[open] summary{color:var(--brand-600)}
.faq-body{padding:0 20px 20px;font-size:14.5px;line-height:1.85;color:var(--body)}

/* ---------- 相关分类 ---------- */
.related{display:flex;flex-wrap:wrap;gap:12px}
.related a{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;border-radius:var(--r-chip);background:#fff;border:1px solid var(--line);color:var(--body);font-size:14px;box-shadow:var(--sh-1);transition:all var(--t) var(--ease)}
.related a::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand)}
.related a:hover{border-color:#D9CEF5;background:var(--brand-50);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-2)}

/* ---------- 深色 CTA ---------- */
.cta-band{position:relative;background:var(--dark);color:rgba(255,255,255,.8);padding:76px 0 84px;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);background-size:16px 16px}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.cta-copy h2{color:#fff;font-size:clamp(1.4rem,2.5vw,1.85rem)}
.cta-copy p{margin-top:16px;font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.74);max-width:460px}
.cta-copy .check-list{margin-top:22px}
.cta-form{background:#fff;border-radius:var(--r-block);padding:28px;box-shadow:var(--sh-3);display:flex;flex-direction:column;gap:14px}
.cta-form label{font-size:13px;color:var(--muted)}
.cta-form input[type="text"],.cta-form select{height:46px;border-radius:var(--r-btn);border:1px solid var(--line);background:#FDFCFF;padding:0 14px;font-size:14.5px;width:100%;transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease)}
.cta-form input[type="text"]::placeholder{color:#B0ACC2}
.cta-form input[type="text"]:focus,.cta-form select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(74,46,143,.12)}
.agree{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--body)}
.agree input{width:18px;height:18px;border-radius:6px;accent-color:var(--brand)}
.form-note{font-size:12.5px;color:var(--muted)}
.form-msg{display:none;font-size:13.5px;color:#0E9C74;background:var(--mint-100);border-radius:10px;padding:10px 12px}
.form-msg.show{display:block}
.field-note{font-size:12.5px;color:#D84545;display:none}
.field-note.show{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.f-col h4{color:#fff;font-size:13px;font-weight:600;letter-spacing:.08em;margin-bottom:16px}
.f-col ul{display:flex;flex-direction:column;gap:10px}
.f-col a{color:rgba(255,255,255,.72);font-size:14px;display:inline-block}
.f-col a:hover{color:#fff;transform:translateX(2px)}
.footer-brand .logo-text strong{color:#fff}
.footer-brand .logo-text em{color:rgba(255,255,255,.5)}
.footer-brand .logo-mark{background:linear-gradient(140deg,#5A39A8,#6D4AE0)}
.footer-brand p{margin-top:16px;font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:330px}
.f-contact li{display:flex;align-items:center;gap:9px;font-size:13.5px;color:rgba(255,255,255,.66)}
.f-contact svg{flex:0 0 auto;color:#9E8AD6}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding:20px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.52)}
.fb-links{display:flex;gap:16px;flex-wrap:wrap}
.fb-links a{color:rgba(255,255,255,.6)}
.fb-links a:hover{color:#fff}

/* ---------- 移动端吸底 ---------- */
.mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom))}
.mobile-bar .btn{width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .chips{justify-content:flex-start}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .feature-card{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .topbar{display:none}
  .nav-inner{height:62px;gap:12px}
  .chips{display:none}
  .link-plain{display:none}
  .menu-toggle{display:inline-flex}
  .nav-actions .btn-sm{height:36px;font-size:13px;padding:0 14px}
  .page-banner .container{padding-top:20px;padding-bottom:96px}
  .banner-stats{gap:8px}
  .banner-stat{padding:10px 14px}
  .filter-card{padding:16px;gap:12px}
  .section{padding:48px 0}
  .section-tight{padding:36px 0}
  .feature-body{padding:22px}
  .timeline::before{left:7px}
  .tl-item{grid-template-columns:1fr;gap:10px;padding-left:28px}
  .tl-item::before{left:1px;top:22px}
  .tl-date{text-align:left;flex-direction:row;align-items:baseline;gap:8px;padding-top:0}
  .tl-date .d{font-size:16px}
  .metrics{grid-template-columns:1fr 1fr;gap:12px}
  .metric{padding:18px}
  .metric .num{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .mobile-bar{display:block}
  .site-footer{padding-bottom:76px}
  .cta-form{padding:22px}
}
@media (max-width:519px){
  .banner-sub{font-size:14.5px}
  .metrics{grid-template-columns:1fr}
  .related a{width:100%;justify-content:flex-start}
}

/* roulang page: category4 */
:root{
  --primary:#4A2E8F;
  --primary-600:#3A2270;
  --primary-soft:#EFEAFB;
  --primary-line:#D9CFF5;
  --accent:#FF7A45;
  --accent-2:#FF6A2E;
  --green:#12B886;
  --ink:#16122B;
  --text:#3D3A52;
  --muted:#7A7691;
  --line:#E7E3F2;
  --bg:#FBFAFE;
  --card:#FFFFFF;
  --dark:#14102A;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-1:0 2px 8px rgba(22,18,43,.05);
  --shadow-2:0 10px 28px rgba(74,46,143,.12);
  --shadow-3:0 18px 40px rgba(20,16,42,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms var(--ease);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:.01em;line-height:1.3;font-weight:700}
h1{font-size:clamp(1.75rem,4vw,2.75rem)}
h2{font-size:clamp(1.375rem,2.4vw,1.875rem)}
h3{font-size:1.125rem}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.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}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 顶部细条 ---------- */
.topbar{background:var(--primary-soft);border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px}
.topbar-note{font-size:12px;color:var(--primary-600);letter-spacing:.01em}
.topbar-links{display:flex;gap:18px;font-size:12px}
.topbar-links a{color:var(--muted);transition:color var(--t)}
.topbar-links a:hover{color:var(--primary)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,250,254,.86);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:box-shadow var(--t),border-color var(--t);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 18px rgba(22,18,43,.06)}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:68px;padding-top:10px;padding-bottom:10px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,var(--primary),#6D4AE0);
  color:#fff;font-size:18px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(74,46,143,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;color:var(--ink);letter-spacing:.02em}
.logo-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.08em}
.chips{display:flex;align-items:center;gap:8px;flex:1;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:4px 2px}
.chips::-webkit-scrollbar{display:none}
.chip{
  height:36px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:transparent;
  display:inline-flex;align-items:center;white-space:nowrap;
  font-size:14px;color:var(--text);
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.chip:hover{background:var(--primary-soft);border-color:var(--primary-line);color:var(--primary)}
.chip.active{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 0 0 2px rgba(74,46,143,.15)}
.nav-actions{display:flex;align-items:center;gap:16px;flex:none}
.link-arrow{font-size:14px;color:var(--primary);display:inline-flex;align-items:center;gap:4px;transition:color var(--t),transform var(--t)}
.link-arrow::after{content:"→";transition:transform var(--t)}
.link-arrow:hover{color:var(--primary-600)}
.link-arrow:hover::after{transform:translateX(4px)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;
  cursor:pointer;white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:999px}
.btn-primary{background:linear-gradient(120deg,#FF8A54,var(--accent-2));color:#fff;box-shadow:0 8px 20px rgba(255,106,46,.28)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,106,46,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft)}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.18)}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding:20px 0 4px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);list-style:none;margin:0;padding:0}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--muted);transition:color var(--t)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--primary);font-weight:600}

/* ---------- Hero ---------- */
.hero{padding:20px 0 8px}
.hero-banner{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  padding:56px 48px 46px;
  color:#fff;
  background-image:linear-gradient(112deg,rgba(20,16,42,.94),rgba(58,34,112,.82)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  box-shadow:var(--shadow-3);
}
.hero-banner::after{
  content:"";position:absolute;right:-40px;bottom:-40px;width:320px;height:320px;
  background-image:radial-gradient(rgba(255,255,255,.45) 1px,transparent 1px);
  background-size:16px 16px;opacity:.12;pointer-events:none;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.06em;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  color:#fff;margin-bottom:18px;
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(18,184,134,.24)}
.hero-banner h1{color:#fff;max-width:760px}
.hero-sub{max-width:720px;margin:16px 0 26px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.82)}
.search-bar{
  display:flex;align-items:center;gap:6px;
  background:#fff;border-radius:999px;padding:6px;
  max-width:620px;position:relative;z-index:2;
  box-shadow:0 12px 30px rgba(20,16,42,.22);
}
.search-bar input{
  flex:1;border:none;background:transparent;height:46px;padding:0 12px 0 20px;
  font-size:15px;color:var(--ink);outline:none;min-width:0;
}
.search-bar input::placeholder{color:#A7A3B8}
.search-bar .btn{border-radius:999px;height:44px}
.quick-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;position:relative;z-index:2}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);color:#fff;
  transition:background var(--t),transform var(--t);
}
.tag:hover{background:rgba(255,255,255,.24);transform:translateY(-1px)}

/* ---------- 数据卡 ---------- */
.section{padding:64px 0}
.section-tight{padding:40px 0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:-56px;position:relative;z-index:5}
.stat{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.stat:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--primary-line)}
.stat .num{display:block;font-size:26px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.stat .lbl{display:block;margin-top:6px;font-size:13px;color:var(--muted)}

/* ---------- 区块标题 ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.sec-head .titles{position:relative;padding-left:18px}
.sec-head .titles::before{
  content:"";position:absolute;left:0;top:6px;width:6px;height:6px;border-radius:2px;background:var(--accent);
}
.sec-head h2{margin-bottom:6px}
.sec-head p{margin:0;font-size:14px;color:var(--muted)}

/* ---------- 帮助主体布局 ---------- */
.help-layout{display:grid;grid-template-columns:250px 1fr;gap:32px;align-items:start}
.side-nav{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px;box-shadow:var(--shadow-1);
}
.side-nav h2{font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.08em;margin-bottom:12px;padding-left:12px}
.side-nav a{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--text);transition:background var(--t),color var(--t)}
.side-nav a:hover{background:var(--primary-soft);color:var(--primary)}
.side-nav a .cnt{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.side-nav a:hover .cnt{color:var(--primary)}
.side-nav .nav-cta{display:block;margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.side-nav .nav-cta .btn{width:100%}

.faq-group{margin-bottom:36px;scroll-margin-top:104px}
.group-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.group-head h2{font-size:20px}
.group-count{font-size:12px;color:var(--primary);background:var(--primary-soft);border-radius:999px;padding:3px 10px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  margin-bottom:10px;overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{border-color:var(--primary-line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 56px 18px 20px;
  font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--primary);line-height:1;
  transition:transform var(--t),color var(--t);
}
.faq-item[open]{border-color:#CFC3F0;box-shadow:var(--shadow-2)}
.faq-item[open] summary{color:var(--primary-600)}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);color:var(--accent)}
.faq-body{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--text);border-top:1px dashed var(--line);padding-top:16px;margin:0 20px 0;padding-left:0;padding-right:0}
.faq-body p{margin:0 0 10px}
.faq-body p:last-child{margin-bottom:0}
.faq-body .hint{font-size:13px;color:var(--muted)}

/* ---------- 帮助路径 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.step:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--primary-line)}
.step-no{
  width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);font-weight:700;font-size:14px;margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.step h3{margin-bottom:8px;font-size:17px}
.step p{font-size:14.5px;color:var(--text);margin:0}
.visual-split{display:grid;grid-template-columns:1.05fr 1fr;gap:32px;align-items:center;margin-top:32px}
.visual-split .pic{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-2);border:1px solid var(--line);background:#EDEAF6}
.visual-split .pic img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 260ms var(--ease)}
.visual-split .pic:hover img{transform:scale(1.03)}
.visual-split h3{margin-bottom:10px;font-size:18px}
.visual-split ul.check li{position:relative;padding-left:24px;margin-bottom:10px;font-size:14.5px}
.visual-split ul.check li::before{
  content:"";position:absolute;left:0;top:9px;width:10px;height:6px;
  border-left:2px solid var(--green);border-bottom:2px solid var(--green);
  transform:rotate(-45deg);
}

/* ---------- 联系与支持 ---------- */
.support{
  background:var(--primary-soft);border:1px solid var(--primary-line);
  border-radius:var(--radius-lg);padding:36px;
  display:grid;grid-template-columns:1.15fr 1fr;gap:32px;align-items:center;
}
.support h2{margin-bottom:10px}
.support p{font-size:14.5px;color:var(--text)}
.support .items{display:grid;gap:10px;margin:18px 0 22px}
.support .items li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink)}
.support .items li span.dot{width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:9px;flex:none}
.support .pic{border-radius:var(--radius-card);overflow:hidden;border:1px solid #fff;box-shadow:var(--shadow-2);background:#EDEAF6}
.support .pic img{width:100%;aspect-ratio:4/3;object-fit:cover}
.support-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 相关分类 ---------- */
.rel-nav{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px 32px;box-shadow:var(--shadow-1);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.rel-nav h2{font-size:17px;margin:0}
.rel-nav .rel-chips{display:flex;flex-wrap:wrap;gap:10px}
.rel-nav .rel-chips a{
  padding:8px 16px;border-radius:999px;border:1px solid var(--line);
  font-size:13.5px;color:var(--text);background:#fff;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
}
.rel-nav .rel-chips a:hover{background:var(--primary-soft);border-color:var(--primary-line);color:var(--primary);transform:translateY(-1px)}
.rel-nav .rel-chips a.current{background:var(--primary);border-color:var(--primary);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:72px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding:56px 0 36px}
.site-footer .logo{margin-bottom:16px}
.site-footer .logo-text strong{color:#fff}
.site-footer .logo-text em{color:rgba(255,255,255,.55)}
.f-col h4{font-size:13px;color:#fff;font-weight:600;letter-spacing:.06em;margin-bottom:16px}
.f-col p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px}
.f-col ul li{margin-bottom:10px}
.f-col a{font-size:13.5px;color:rgba(255,255,255,.72);transition:color var(--t),transform var(--t);display:inline-block}
.f-col a:hover{color:#fff;transform:translateX(2px)}
.f-contact li{display:flex;gap:8px;align-items:center;font-size:13.5px;color:rgba(255,255,255,.72)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.55);
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}
.fb-links a{color:rgba(255,255,255,.6);transition:color var(--t)}
.fb-links a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .help-layout{grid-template-columns:1fr;gap:24px}
  .side-nav{position:static}
  .side-nav ul{display:flex;flex-wrap:wrap;gap:8px}
  .side-nav a{background:var(--bg);border:1px solid var(--line);padding:8px 14px;border-radius:999px;font-size:13.5px}
  .side-nav a .cnt{display:none}
  .side-nav .nav-cta{margin-top:16px;padding-top:16px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .visual-split{grid-template-columns:1fr;gap:24px}
  .support{grid-template-columns:1fr;padding:28px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .hero-banner{padding:44px 32px 40px}
}
@media (max-width:767px){
  body{font-size:15px}
  .container{padding:0 16px}
  .topbar-note{font-size:11.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .nav-inner{gap:12px;flex-wrap:wrap;min-height:auto;padding-top:12px;padding-bottom:12px}
  .chips{order:3;width:100%;flex:none}
  .nav-actions{margin-left:auto}
  .nav-actions .link-arrow{display:none}
  .hero{padding:12px 0 0}
  .hero-banner{padding:32px 20px 30px;border-radius:var(--radius-card)}
  .hero-sub{font-size:14.5px;margin:14px 0 20px}
  .search-bar{flex-direction:column;border-radius:18px;padding:10px;gap:10px}
  .search-bar input{width:100%;height:42px;padding:0 14px}
  .search-bar .btn{width:100%;height:44px}
  .quick-tags{gap:8px}
  .stats{margin-top:-28px;grid-template-columns:1fr 1fr;gap:12px}
  .stat{padding:16px}
  .stat .num{font-size:22px}
  .section{padding:44px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:8px}
  .faq-item summary{padding:16px 48px 16px 16px;font-size:15px}
  .faq-item summary::after{right:16px}
  .group-head h2{font-size:18px}
  .support{padding:22px}
  .rel-nav{padding:20px;flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding:40px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}