/* roulang page: index */
:root{
  --bg-deep:#070B18;
  --bg-base:#0B1226;
  --surface:#101830;
  --surface-2:#141D38;
  --line:rgba(255,255,255,.07);
  --line-strong:rgba(255,255,255,.14);
  --primary:#17E0C0;
  --primary-deep:#0E9E8C;
  --accent:#FF8A3D;
  --violet:#7C5CFF;
  --ok:#2FD98A;
  --warn:#FFB020;
  --err:#FF5A6A;
  --t1:#F2F6FF;
  --t2:rgba(255,255,255,.72);
  --t3:rgba(255,255,255,.48);
  --t4:rgba(255,255,255,.30);
  --r-card:20px;
  --r-big:28px;
  --r-sm:8px;
  --r-btn:999px;
  --r-input:14px;
  --sh-raise:0 12px 32px rgba(0,0,0,.35);
  --sh-float:0 28px 70px rgba(0,0,0,.5);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--t2);
  font-family:'PingFang SC','HarmonyOS Sans','Microsoft YaHei',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--primary);text-decoration:none;transition:color .24s var(--ease),opacity .24s var(--ease)}
a:hover{color:#5CEFD8}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:800;line-height:1.22}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(23,224,192,.28);color:#fff}
:focus-visible{outline:2px solid var(--t1);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0;position:relative}
.section-tight{padding:72px 0}
main > .section:nth-of-type(even){background:linear-gradient(180deg,rgba(11,18,38,0),rgba(11,18,38,.86) 18%,rgba(11,18,38,.86) 82%,rgba(11,18,38,0))}
.divider-soft{height:1px;border:0;background:var(--line);margin:0}

/* ============ HEADER ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),backdrop-filter .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(12,18,38,.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:rgba(255,255,255,.08);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:74px;gap:20px}
.brand{display:flex;align-items:center;gap:11px;color:var(--t1);text-decoration:none;flex:0 0 auto}
.brand:hover{color:#fff}
.brand-mark{width:34px;height:34px;flex:0 0 auto;display:block}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.brand-text-sm{display:none;font-size:16px;font-weight:700;letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--t2);
  padding:6px 0;text-decoration:none;transition:color .24s var(--ease);
}
.nav-link::after{
  content:'';position:absolute;left:0;bottom:0;width:20px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:#fff;font-weight:600}
.nav-right{display:flex;align-items:center;gap:20px;flex:0 0 auto}
.nav-help{font-size:14px;color:var(--t3);text-decoration:none}
.nav-help:hover{color:var(--t1)}
.hamburger{
  display:none;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;flex-direction:column;gap:6px;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.04);
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--primary)}
.hamburger:hover{background:rgba(23,224,192,.10);border-color:rgba(23,224,192,.40)}

/* drawer */
.overlay{
  position:fixed;inset:0;background:rgba(4,8,20,.6);opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:88;
  backdrop-filter:blur(2px);
}
.overlay.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;z-index:92;
  background:rgba(12,18,38,.92);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  border-left:1px solid rgba(255,255,255,.10);
  transform:translateX(101%);
  transition:transform .32s var(--ease);
  display:flex;flex-direction:column;padding:20px 20px 26px;
  box-shadow:-24px 0 60px rgba(0,0,0,.45);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.06)}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line-strong);
  color:var(--t1);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:rgba(255,255,255,.06)}
.drawer-nav{flex:1;overflow-y:auto;padding-top:8px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;color:var(--t2);font-size:15px;font-weight:500;text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--primary)}
.drawer-cta{margin-top:18px;width:100%;justify-content:center}
.drawer-foot{margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.06);font-size:12px;color:var(--t3);line-height:2}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:700;font-size:15px;
  padding:14px 28px;border:1px solid transparent;text-decoration:none;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),filter .24s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#17E0C0,#0E9E8C);color:#04140F;
  box-shadow:0 0 0 1px rgba(23,224,192,.35),0 10px 30px rgba(23,224,192,.28);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(23,224,192,.45),0 14px 44px rgba(23,224,192,.42);color:#04140F}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(23,224,192,.35),0 6px 18px rgba(23,224,192,.26)}
.btn-ghost{
  background:transparent;color:var(--t1);border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{background:rgba(23,224,192,.06);border-color:rgba(23,224,192,.40);color:var(--t1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-outline-primary{
  background:transparent;color:var(--primary);border:1px solid rgba(23,224,192,.45);
}
.btn-outline-primary:hover{background:rgba(23,224,192,.08);border-color:var(--primary);color:var(--primary)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn:disabled,.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed}
.link-arrow{color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-arrow span{transition:transform .24s var(--ease)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.link-arrow:hover span{transform:translateX(2px)}

/* ============ HERO ============ */
.hero{
  position:relative;min-height:86vh;display:flex;align-items:center;
  padding:140px 0 100px;overflow:hidden;
  background:#070B18 url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero-mask{position:absolute;inset:0;background:linear-gradient(118deg,rgba(7,11,24,.92) 0%,rgba(7,11,24,.80) 40%,rgba(7,11,24,.45) 100%);pointer-events:none}
.hero-grid{position:absolute;inset:0;background-image:radial-gradient(rgba(23,224,192,.24) 1px,transparent 1px);background-size:28px 28px;opacity:.5;pointer-events:none}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;width:100%}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--primary);background:rgba(23,224,192,.08);border:1px solid rgba(23,224,192,.24);
  border-radius:var(--r-btn);padding:6px 14px;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(30px,4.6vw,56px);line-height:1.15;font-weight:800;letter-spacing:-.01em;
  color:var(--t1);margin-bottom:20px;
}
.grad-text{background:linear-gradient(120deg,#17E0C0,#7C5CFF);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:19px;color:var(--t2);max-width:520px;margin-bottom:32px;line-height:1.7}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-micro{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--t3)}
.hero-micro i{width:6px;height:6px;border-radius:50%;background:var(--primary);opacity:.7;display:inline-block}
.hero-micro .sep{color:var(--t4)}

/* account card */
.glass{
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-float);
}
.acct-card{border-radius:var(--r-big);padding:22px}
.acct-top{display:flex;align-items:center;gap:14px;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.08)}
.acct-avatar{
  width:56px;height:56px;border-radius:14px;flex:0 0 auto;
  border:1px solid rgba(23,224,192,.55);
  background:linear-gradient(140deg,rgba(23,224,192,.22),rgba(124,92,255,.20));
  display:flex;align-items:center;justify-content:center;color:var(--primary);font-weight:800;font-size:18px;
}
.acct-name{font-size:16px;font-weight:700;color:var(--t1)}
.acct-sub{font-size:12.5px;color:var(--t3);margin-top:2px}
.badge-level{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-sm);
  font-size:12px;font-weight:700;color:var(--primary);border:1px solid rgba(23,224,192,.45);
  background:rgba(23,224,192,.07);white-space:nowrap;
}
.acct-rows{padding:16px 0 6px}
.acct-row{display:flex;align-items:center;justify-content:space-between;font-size:14px;padding:9px 0}
.acct-row .k{color:var(--t3)}
.acct-row .v{color:var(--t1);font-family:var(--mono);font-weight:600;letter-spacing:.01em}
.acct-progress{margin-top:12px}
.progress-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;position:relative}
.progress-fill{
  height:100%;width:26%;border-radius:999px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  box-shadow:0 0 15px rgba(23,224,192,.75);
}
.progress-note{display:flex;justify-content:space-between;font-size:12.5px;color:var(--t3);margin-top:10px}

/* ============ SECTION HEADS ============ */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.sec-title{font-size:clamp(24px,3vw,32px);font-weight:800;letter-spacing:-.01em}
.sec-sub{font-size:15px;color:var(--t3);margin-top:10px;max-width:640px}
.sec-tag{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--primary);margin-bottom:12px;display:block}

/* ============ COMPARE TABLE ============ */
.table-shell{position:relative}
.table-scroll{overflow-x:auto;border-radius:var(--r-big);border:1px solid var(--line);background:var(--surface);-webkit-overflow-scrolling:touch}
.table-scroll::-webkit-scrollbar{height:8px}
.table-scroll::-webkit-scrollbar-thumb{background:rgba(23,224,192,.30);border-radius:999px}
table.compare{width:100%;min-width:760px;border-collapse:collapse}
table.compare th,table.compare td{padding:0 22px;text-align:left;font-size:14.5px;height:56px;white-space:nowrap}
table.compare thead th{background:rgba(255,255,255,.02);border-bottom:1px solid var(--line-strong);font-size:13px;color:var(--t3);font-weight:600}
table.compare tbody tr{border-bottom:1px solid var(--line);transition:background .24s var(--ease)}
table.compare tbody tr:last-child{border-bottom:0}
table.compare tbody tr:hover{background:rgba(23,224,192,.04)}
table.compare td:first-child,table.compare th:first-child{color:var(--t1);font-weight:600;padding-left:26px}
.col-pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-btn);border:1px solid var(--line-strong);background:rgba(255,255,255,.05);color:var(--t1);font-weight:700;font-size:13px}
.col-rec{position:relative}
.col-rec::before{
  content:'推荐';position:absolute;top:-11px;left:50%;transform:translateX(-50%);
  background:var(--accent);color:#231000;font-size:11px;font-weight:800;border-radius:6px;padding:2px 8px;letter-spacing:.04em;
}
th.col-rec,td.col-rec{background:rgba(23,224,192,.04);border-left:1px solid rgba(23,224,192,.35);border-right:1px solid rgba(23,224,192,.35)}
thead th.col-rec{border-top:1px solid rgba(23,224,192,.35)}
tbody tr:last-child td.col-rec{border-bottom:1px solid rgba(23,224,192,.35)}
.mark-yes{color:var(--primary);font-weight:800}
.mark-no{color:var(--t4);font-weight:700}
.table-note{font-size:12px;color:var(--t3);margin-top:14px;line-height:1.8}
.swipe-hint{display:none;font-size:12.5px;color:var(--t3);margin-top:10px}

/* ============ LEVEL STAIRS ============ */
.stairs{position:relative;padding:28px 0 8px}
.stairs-line{position:absolute;left:0;right:0;top:50%;height:1px;background:linear-gradient(90deg,transparent,rgba(23,224,192,.55),rgba(124,92,255,.35),transparent);pointer-events:none}
.stairs-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:start}
.stair{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--sh-raise);
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.stair:hover{transform:translateY(-4px);border-color:rgba(23,224,192,.35);box-shadow:0 20px 46px rgba(0,0,0,.45)}
.stair:nth-child(1){margin-top:0}
.stair:nth-child(2){margin-top:16px}
.stair:nth-child(3){margin-top:32px}
.stair:nth-child(4){margin-top:48px}
.stair.locked{opacity:.55}
.stair-ico{
  width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);margin-bottom:16px;color:var(--primary);
}
.stair-lv{font-family:var(--mono);font-size:28px;font-weight:700;color:var(--primary);line-height:1;margin-bottom:6px}
.stair-name{font-size:17px;font-weight:700;color:var(--t1);margin-bottom:12px}
.stair-list li{font-size:14px;line-height:1.7;color:var(--t2);padding-left:14px;position:relative;margin-bottom:8px}
.stair-list li::before{content:'';position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:1px;background:var(--primary);opacity:.8}
.stair-tag{display:inline-block;margin-top:6px;font-size:11.5px;color:var(--violet);border:1px solid rgba(124,92,255,.40);border-radius:var(--r-sm);padding:2px 8px}

/* ============ CONTENT CARDS ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--sh-raise);
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(23,224,192,.35);box-shadow:0 22px 50px rgba(0,0,0,.48)}
.card-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:#0A1024}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.card:hover .card-cover img{transform:scale(1.04)}
.card-cover::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,24,0) 42%,rgba(7,11,24,.60) 100%)}
.badge-cat{
  position:absolute;left:14px;top:14px;z-index:2;
  font-size:11px;font-weight:600;color:#fff;padding:4px 10px;border-radius:var(--r-sm);
  background:rgba(12,18,38,.66);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.14);
}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:16px;font-weight:700;line-height:1.5;color:var(--t1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-sum{font-size:14px;color:var(--t3);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--t3)}

/* ============ CMS LIST ============ */
.cms-layout{display:grid;grid-template-columns:2fr 1fr;gap:32px;align-items:start}
.cms-list{border-top:1px solid var(--line)}
.cms-item{
  display:grid;grid-template-columns:96px 1fr;gap:18px;padding:18px 14px;
  border-bottom:1px solid var(--line);text-decoration:none;color:inherit;
  transition:background .24s var(--ease);
}
.cms-item:hover{background:rgba(23,224,192,.04)}
.cms-item:hover .cms-item-title{color:var(--primary)}
.cms-thumb{width:96px;height:72px;border-radius:12px;object-fit:cover;border:1px solid var(--line)}
.cms-item-title{font-size:16px;font-weight:700;color:var(--t1);line-height:1.5;transition:color .24s var(--ease);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.cms-item-sum{font-size:13.5px;color:var(--t3);margin-top:6px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:10px;font-size:12.5px;color:var(--t3)}
.cms-meta .dot{color:var(--t4)}
.side-card{border-radius:var(--r-big);padding:24px;position:sticky;top:100px}
.side-title{font-size:16px;font-weight:700;color:var(--t1);margin-bottom:16px}
.side-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:14px}
.side-list li:last-child{border-bottom:0}
.side-list a{color:var(--t2);text-decoration:none}
.side-list a:hover{color:var(--primary)}
.side-count{font-family:var(--mono);font-size:13px;color:var(--primary);font-weight:700}
.empty-state{padding:56px 20px;text-align:center;border-bottom:1px solid var(--line)}
.empty-state svg{color:rgba(255,255,255,.30);margin:0 auto 14px}
.empty-state .t{font-size:15px;color:var(--t2);font-weight:600}
.empty-state .s{font-size:13px;color:var(--t3);margin-top:6px}

/* ============ FAQ ============ */
.faq-shell{border-radius:var(--r-big);padding:32px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 32px}
details.faq{border-bottom:1px solid rgba(255,255,255,.08);padding:0}
details.faq:last-child{border-bottom:0}
details.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--t1);line-height:1.55;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary:hover{color:var(--primary)}
.faq-arrow{flex:0 0 auto;color:var(--primary);transition:transform .24s var(--ease)}
details.faq[open] .faq-arrow{transform:rotate(180deg)}
.faq-body{font-size:15px;line-height:1.85;color:var(--t2);padding:0 0 20px;max-width:600px}

/* ============ CTA ============ */
.cta-card{
  border-radius:var(--r-big);border:1px solid rgba(23,224,192,.35);
  padding:48px 44px;position:relative;overflow:hidden;
  background:
    radial-gradient(70% 120% at 18% 12%,rgba(23,224,192,.12),transparent 62%),
    rgba(255,255,255,.045);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-float);
  display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center;
}
.cta-title{font-size:clamp(24px,3vw,34px);font-weight:800;color:var(--t1);margin-bottom:14px}
.cta-sub{font-size:15.5px;color:var(--t2);margin-bottom:26px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.cta-perks{border-left:1px solid rgba(255,255,255,.10);padding-left:32px;display:flex;flex-direction:column;gap:18px}
.perk{display:flex;align-items:flex-start;gap:12px}
.perk-ico{
  width:34px;height:34px;flex:0 0 auto;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(23,224,192,.10);border:1px solid rgba(23,224,192,.28);color:var(--primary);
}
.perk-t{font-size:14.5px;font-weight:700;color:var(--t1)}
.perk-s{font-size:12.5px;color:var(--t3);margin-top:2px;line-height:1.6}

/* ============ FOOTER ============ */
.site-footer{
  position:relative;background:#070B18;border-top:1px solid var(--line);
  padding:72px 0 0;overflow:hidden;margin-top:96px;
}
.site-footer::before{
  content:'';position:absolute;top:0;left:0;right:0;height:120px;
  background:radial-gradient(58% 100% at 50% 0,rgba(23,224,192,.20),transparent 70%);
  pointer-events:none;
}
.footer-grid{position:relative;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-desc{font-size:13.5px;color:var(--t3);line-height:1.9;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:18px;letter-spacing:.02em}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:13.5px;color:var(--t3);text-decoration:none}
.footer-col a:hover{color:var(--primary)}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--t3);margin-bottom:14px}
.footer-contact svg{flex:0 0 auto;color:var(--primary);opacity:.85}
.footer-bottom{
  position:relative;border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.5);text-decoration:none}
.footer-bottom a:hover{color:var(--primary)}
.footer-bottom .right{display:flex;gap:18px;flex-wrap:wrap}

/* ============ RESPONSIVE ============ */
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero{padding:124px 0 76px}
  .acct-card{width:100%}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .cms-layout{grid-template-columns:1fr}
  .side-card{position:static}
  .stairs-grid{grid-template-columns:repeat(2,1fr)}
  .stair:nth-child(3){margin-top:0}
  .stair:nth-child(4){margin-top:16px}
  .cta-card{grid-template-columns:1fr;padding:36px 28px}
  .cta-perks{border-left:0;border-top:1px solid rgba(255,255,255,.10);padding-left:0;padding-top:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:900px){
  .table-scroll{overflow-x:auto}
  .swipe-hint{display:block}
}
@media (max-width:768px){
  .main-nav,.nav-help{display:none}
  .hamburger{display:flex}
  .brand-text{display:none}
  .brand-text-sm{display:inline}
  .section{padding:56px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .faq-grid{grid-template-columns:1fr}
  .faq-shell{padding:22px}
  .hero{min-height:auto;padding:112px 0 64px}
  .acct-card{padding:20px}
  .hero-micro{flex-direction:column;align-items:flex-start;gap:8px}
  .hero-micro .sep{display:none}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .card-grid{grid-template-columns:1fr}
  .stairs-grid{grid-template-columns:1fr}
  .stair{margin-top:0 !important}
  .stairs-line{display:none}
  .cms-item{grid-template-columns:76px 1fr;gap:14px;padding:16px 6px}
  .cms-thumb{width:76px;height:60px;border-radius:10px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{justify-content:flex-start}
  body{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .card:hover,.stair:hover,.btn:hover{transform:none}
  .card:hover .card-cover img{transform:none}
}

/* roulang page: article */
:root{
  --bg-deep:#070B18;
  --bg-base:#0B1226;
  --surface:#101830;
  --surface-2:#141D38;
  --line:rgba(255,255,255,.07);
  --line-soft:rgba(255,255,255,.06);
  --primary:#17E0C0;
  --primary-deep:#0E9E8C;
  --accent:#FF8A3D;
  --violet:#7C5CFF;
  --success:#2FD98A;
  --t1:#F2F6FF;
  --t2:rgba(255,255,255,.72);
  --t3:rgba(255,255,255,.48);
  --t4:rgba(255,255,255,.30);
  --r-card:20px;
  --r-big:24px;
  --r-sm:8px;
  --shadow-raise:0 12px 32px rgba(0,0,0,.35);
  --shadow-float:0 28px 70px rgba(0,0,0,.5);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:"JetBrains Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:radial-gradient(900px 480px at 78% -8%,rgba(23,224,192,.10),transparent 62%),
             radial-gradient(760px 420px at 8% 6%,rgba(124,92,255,.08),transparent 60%);
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;}
a:hover{color:#4dedd1;}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--t1);margin:0;font-weight:700;line-height:1.28;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(23,224,192,.28);color:#fff;}
:focus-visible{outline:2px solid var(--t1);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;position:relative;z-index:1;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  border-bottom:1px solid transparent;
  transition:background 240ms var(--ease),border-color 240ms var(--ease),backdrop-filter 240ms var(--ease);
}
.site-header.scrolled{
  background:rgba(12,18,38,.72);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:rgba(255,255,255,.08);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:34px;height:34px;flex-shrink:0;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--t1);white-space:nowrap;}
.brand-short{display:none;font-size:17px;font-weight:700;color:var(--t1);}
.main-nav{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--t2);
  padding:6px 0;transition:color 240ms var(--ease);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:20px;height:2px;border-radius:2px;
  background:var(--primary);transform:translateX(-50%);opacity:0;transition:opacity 240ms var(--ease);
}
.nav-link:hover{color:var(--t1);}
.nav-link.active{color:var(--t1);}
.nav-link.active::after{opacity:1;}
.header-right{display:flex;align-items:center;gap:20px;flex-shrink:0;}
.header-help{font-size:14px;color:var(--t2);transition:color 240ms var(--ease);}
.header-help:hover{color:var(--primary);}

/* ---------- 按钮 ---------- */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;border:none;cursor:pointer;
  background:linear-gradient(135deg,#17E0C0,#0E9E8C);
  color:#04140F;font-size:15px;font-weight:700;letter-spacing:.01em;
  box-shadow:0 0 0 1px rgba(23,224,192,.35),0 10px 30px rgba(23,224,192,.28);
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),filter 240ms var(--ease);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(23,224,192,.45),0 0 44px rgba(23,224,192,.40);color:#04140F;}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(23,224,192,.35),0 6px 16px rgba(23,224,192,.22);}
.btn-primary:focus-visible{outline:2px solid #F2F6FF;outline-offset:2px;}
.btn-primary.btn-sm{padding:11px 22px;font-size:14px;}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
  color:var(--t1);background:transparent;border:1px solid rgba(255,255,255,.18);
  cursor:pointer;transition:background 240ms var(--ease),border-color 240ms var(--ease),color 240ms var(--ease);
}
.btn-outline:hover{background:rgba(23,224,192,.06);border-color:rgba(23,224,192,.40);color:var(--t1);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;}
.btn-text .arrow{transition:transform 240ms var(--ease);}
.btn-text:hover .arrow{transform:translateX(2px);}
.btn-text:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;}

/* ---------- 移动端抽屉 ---------- */
.hamburger{
  display:none;width:44px;height:44px;border-radius:12px;background:transparent;
  border:1px solid rgba(255,255,255,.12);cursor:pointer;position:relative;flex-shrink:0;
}
.hamburger span{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--primary);
  transform:translateX(-50%);transition:transform 240ms var(--ease),opacity 240ms var(--ease);
}
.hamburger span:nth-child(1){top:19px;}
.hamburger span:nth-child(2){top:25px;}
.hamburger.open span:nth-child(1){transform:translateX(-50%) translateY(3px) rotate(45deg);}
.hamburger.open span:nth-child(2){transform:translateX(-50%) translateY(-3px) rotate(-45deg);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,20,.6);opacity:0;pointer-events:none;
  transition:opacity 240ms var(--ease);z-index:130;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;height:100vh;width:82vw;max-width:360px;z-index:140;
  background:rgba(12,18,38,.94);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-left:1px solid rgba(255,255,255,.10);
  padding:22px 22px 32px;overflow-y:auto;
  transform:translateX(100%);transition:transform 320ms var(--ease);
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.12);
  background:transparent;color:var(--t2);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-close:hover{color:var(--t1);border-color:rgba(23,224,192,.4);}
.drawer-nav a{
  display:block;line-height:52px;font-size:16px;color:var(--t1);
  border-bottom:1px solid rgba(255,255,255,.06);transition:color 240ms var(--ease);
}
.drawer-nav a:hover{color:var(--primary);}
.drawer-cta{margin-top:22px;}
.drawer-cta .btn-primary{width:100%;}
.drawer-contact{margin-top:26px;padding-top:18px;border-top:1px solid rgba(255,255,255,.06);font-size:13px;color:var(--t3);line-height:2;}

/* ---------- 阅读进度 ---------- */
.read-progress{
  position:fixed;top:0;left:0;height:2px;width:100%;transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,#17E0C0,#0E9E8C);z-index:200;transition:transform 120ms linear;
}
/* ---------- 文章外层 ---------- */
.article-wrap{padding:132px 0 96px;position:relative;z-index:1;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--t3);margin-bottom:26px;
}
.breadcrumb a{color:var(--t3);transition:color 240ms var(--ease);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--t4);}
.breadcrumb .current{color:var(--primary);}
.article-head{max-width:860px;margin-bottom:38px;}
.article-title{font-size:clamp(26px,3.4vw,40px);line-height:1.28;font-weight:800;letter-spacing:-.01em;}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px 18px;margin-top:20px;
  font-size:13px;color:var(--t3);
}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-item svg{opacity:.72;}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 10px;
  border-radius:8px;font-size:12px;font-weight:600;line-height:1;
}
.badge-level{border:1px solid rgba(23,224,192,.5);color:var(--primary);background:rgba(23,224,192,.07);}
.badge-glass{
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.14);color:var(--t1);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}

/* ---------- 两栏布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 300px;gap:56px;
  justify-content:center;align-items:start;
}
.article-main{min-width:0;}
.article-body{font-size:17px;line-height:1.9;color:rgba(255,255,255,.82);}
.article-body>*:first-child{margin-top:0;}
.article-body h2{
  position:relative;padding-left:18px;font-size:24px;font-weight:700;
  margin:44px 0 18px;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:2px;background:var(--primary);
}
.article-body h3{
  display:flex;align-items:center;gap:10px;font-size:19px;font-weight:600;margin:32px 0 14px;
}
.article-body h3::before{
  content:"";width:9px;height:9px;border-radius:50%;border:2px solid var(--primary);flex-shrink:0;
}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 12px;}
.article-body p{margin:0 0 22px;color:rgba(255,255,255,.82);}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body a:hover{color:#5cf3da;}
.article-body strong{color:var(--t1);font-weight:600;}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;border-left:3px solid var(--primary);
  background:rgba(255,255,255,.04);border-radius:0 14px 14px 0;color:var(--t2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;margin:26px auto;max-width:100%;}
.article-body figure{margin:26px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:rgba(255,255,255,.5);margin-top:10px;}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:22px;}
.article-body li{position:relative;margin-bottom:10px;color:rgba(255,255,255,.82);line-height:1.85;}
.article-body ul>li::before{
  content:"";position:absolute;left:-16px;top:.72em;width:6px;height:6px;
  border-radius:2px;background:var(--primary);
}
.article-body ol{counter-reset:li;list-style:none;}
.article-body ol>li{counter-increment:li;padding-left:2px;}
.article-body ol>li::before{
  content:counter(li);position:absolute;left:-22px;top:.1em;
  font-family:var(--mono);font-size:14px;color:var(--primary);font-weight:600;
}
.article-body pre{
  background:#0A1024;border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;overflow-x:auto;margin:24px 0;
  font-family:var(--mono);font-size:14px;line-height:1.7;color:#C8D6F0;
}
.article-body code{
  font-family:var(--mono);font-size:.92em;background:rgba(255,255,255,.06);
  padding:2px 6px;border-radius:6px;color:#9FF0E1;
}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body hr{border:none;height:1px;background:var(--line-soft);margin:34px 0;}

/* 空态 */
.empty-state{
  padding:56px 24px;text-align:center;border:1px dashed rgba(255,255,255,.12);
  border-radius:var(--r-big);background:rgba(255,255,255,.02);
}
.empty-state svg{color:rgba(255,255,255,.30);margin:0 auto 16px;}
.empty-title{font-size:17px;font-weight:600;color:var(--t1);margin-bottom:8px;}
.empty-sub{font-size:13px;color:var(--t3);margin-bottom:22px;}

/* 标签 */
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line-soft);}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  font-size:12px;color:var(--t2);border:1px solid rgba(255,255,255,.14);
  transition:border-color 240ms var(--ease),color 240ms var(--ease),background 240ms var(--ease);
}
.tag:hover{border-color:rgba(23,224,192,.45);color:var(--primary);background:rgba(23,224,192,.06);}

/* 相关推荐 */
.related{margin-top:56px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
.section-title{font-size:22px;font-weight:700;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-raise);
  transition:transform 320ms var(--ease),border-color 320ms var(--ease),box-shadow 320ms var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(23,224,192,.35);box-shadow:var(--shadow-float);}
.card-cover{position:relative;aspect-ratio:16/10;overflow:hidden;}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.card:hover .card-cover img{transform:scale(1.04);}
.card-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,24,.05) 40%,rgba(7,11,24,.62) 100%);
}
.card-cover .badge{position:absolute;top:12px;left:12px;z-index:2;}
.card-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.card-title{font-size:15px;font-weight:700;line-height:1.45;color:var(--t1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card:hover .card-title{color:var(--primary);}
.card-desc{font-size:13px;color:var(--t3);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--t4);padding-top:8px;}
.card-foot .arrow{color:var(--primary);transition:transform 240ms var(--ease);}
.card:hover .card-foot .arrow{transform:translateX(3px);}

/* 返回 */
.back-wrap{display:flex;justify-content:center;margin-top:48px;}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px;}
.glass-card{
  background:rgba(255,255,255,.045);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-raise);
  border-radius:var(--r-big);padding:22px;
}
.side-title{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:14px;letter-spacing:.02em;}
.side-author{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:48px;height:48px;border-radius:14px;flex-shrink:0;
  background:linear-gradient(135deg,rgba(23,224,192,.28),rgba(124,92,255,.28));
  border:1px solid rgba(23,224,192,.45);
  display:flex;align-items:center;justify-content:center;color:var(--t1);font-weight:700;font-size:16px;
}
.side-author-name{font-size:15px;font-weight:700;color:var(--t1);}
.side-author-role{font-size:12px;color:var(--t3);}
.side-desc{font-size:13px;line-height:1.85;color:var(--t3);}
.hot-list li{
  display:flex;gap:12px;align-items:flex-start;padding:11px 0;
  border-bottom:1px solid rgba(255,255,255,.06);font-size:14px;color:var(--t2);line-height:1.6;
}
.hot-list li:last-child{border-bottom:none;padding-bottom:0;}
.hot-list .idx{font-family:var(--mono);font-size:14px;color:var(--primary);flex-shrink:0;line-height:1.6;}
.side-back{display:block;width:100%;text-align:center;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:#070B18;margin-top:40px;padding-top:72px;
  border-top:1px solid var(--line-soft);z-index:1;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:min(1200px,90%);height:120px;pointer-events:none;
  background:radial-gradient(50% 100% at 50% 0%,rgba(23,224,192,.14),transparent 70%);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;position:relative;z-index:1;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:30px;height:30px;}
.footer-desc{font-size:14px;line-height:1.85;color:var(--t3);max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{font-size:14px;color:var(--t3);transition:color 240ms var(--ease);}
.footer-col ul a:hover{color:var(--primary);}
.footer-contact li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--t3);margin-bottom:12px;}
.footer-contact svg{flex-shrink:0;color:var(--t3);}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line-soft);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);position:relative;z-index:1;
}
.footer-bottom a{color:rgba(255,255,255,.5);transition:color 240ms var(--ease);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .article-side{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .main-nav{display:none;}
  .header-right .header-help{display:none;}
  .header-right .btn-primary{display:none;}
  .hamburger{display:block;}
  .brand-text{display:none;}
  .brand-short{display:inline;}
  .article-wrap{padding:110px 0 66px;}
  .article-title{font-size:26px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body p{font-size:16px;}
  .article-body h2{font-size:21px;margin-top:36px;}
  .article-body h3{font-size:18px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .article-head{margin-bottom:28px;}
  .article-meta{gap:8px 14px;}
  .glass-card{padding:18px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;}
  .card:hover{transform:none;}
  .card:hover .card-cover img{transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg-deep:#070B18;
  --bg-base:#0B1226;
  --surface:#101830;
  --surface-2:#141D38;
  --line:rgba(255,255,255,.07);
  --line-strong:rgba(255,255,255,.10);
  --primary:#17E0C0;
  --primary-deep:#0E9E8C;
  --accent:#FF8A3D;
  --violet:#7C5CFF;
  --success:#2FD98A;
  --t1:#F2F6FF;
  --t2:rgba(255,255,255,.72);
  --t3:rgba(255,255,255,.48);
  --t4:rgba(255,255,255,.30);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:24px;
  --r-2xl:28px;
  --r-pill:999px;
  --shadow-raise:0 12px 32px rgba(0,0,0,.35);
  --shadow-float:0 28px 70px rgba(0,0,0,.5);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.body-root{
  margin:0;
  padding:0;
  background:
    radial-gradient(1200px 620px at 50% -8%, #0E1730 0%, rgba(11,18,38,0) 62%),
    var(--bg-deep);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;
  line-height:1.75;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .24s var(--ease),opacity .24s var(--ease)}
a:hover{color:#5CF0D8}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--t1);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- Header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;border-bottom:1px solid transparent;transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease)}
.site-header.is-scrolled{background:rgba(12,18,38,.72);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);border-bottom-color:rgba(255,255,255,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--t1)}
.brand:hover{color:var(--t1)}
.brand-mark{width:32px;height:32px;flex:0 0 auto}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--t1);white-space:nowrap}
.brand-short{display:none;font-size:16px;font-weight:700;letter-spacing:.02em;color:var(--t1)}
.main-nav{display:flex;align-items:center;gap:30px}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:rgba(255,255,255,.68)}
.nav-link:hover{color:var(--t1)}
.nav-link.active{color:var(--t1)}
.nav-link.active::after{content:"";position:absolute;left:50%;bottom:-4px;width:20px;height:2px;border-radius:2px;background:var(--primary);transform:translateX(-50%);box-shadow:0 0 10px rgba(23,224,192,.65)}
.header-right{display:flex;align-items:center;gap:18px}
.link-quiet{font-size:14px;color:rgba(255,255,255,.6)}
.link-quiet:hover{color:var(--t1)}
.menu-toggle{display:none;width:44px;height:44px;border:0;background:transparent;border-radius:12px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:6px}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--primary)}
.menu-toggle:hover{background:rgba(255,255,255,.05)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;text-decoration:none;transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),filter .24s var(--ease),color .24s var(--ease)}
.btn-primary{padding:14px 28px;font-weight:700;color:#04140F;background:linear-gradient(135deg,#17E0C0,#0E9E8C);box-shadow:0 0 0 1px rgba(23,224,192,.35),0 10px 30px rgba(23,224,192,.28)}
.btn-primary:hover{color:#04140F;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(23,224,192,.45),0 14px 44px rgba(23,224,192,.42)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(23,224,192,.35),0 6px 16px rgba(23,224,192,.26)}
.btn-ghost{padding:13px 26px;color:var(--t1);background:transparent;border-color:rgba(255,255,255,.18)}
.btn-ghost:hover{color:var(--t1);background:rgba(23,224,192,.06);border-color:rgba(23,224,192,.4)}
.btn-outline{padding:12px 24px;color:var(--primary);background:rgba(23,224,192,.06);border-color:rgba(23,224,192,.45)}
.btn-outline:hover{color:#5CF0D8;background:rgba(23,224,192,.12);border-color:rgba(23,224,192,.6)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.link-arrow svg{transition:transform .24s var(--ease)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.link-arrow:hover svg{transform:translateX(2px)}

/* ---------- Hero ---------- */
.page-hero{position:relative;min-height:42vh;display:flex;align-items:flex-end;padding:150px 0 60px;overflow:hidden;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,11,24,.95) 0%,rgba(7,11,24,.82) 48%,rgba(7,11,24,.56) 100%)}
.page-hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(23,224,192,.24) 1px,transparent 1px);background-size:28px 28px;opacity:.5;pointer-events:none}
.hero-inner{position:relative;z-index:2;max-width:760px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:18px;flex-wrap:wrap}
.crumbs a{color:var(--t3)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--t4)}
.crumbs .current{color:var(--primary)}
.hero-title{font-size:clamp(28px,3.8vw,44px);line-height:1.2;font-weight:800;color:var(--t1);letter-spacing:.01em}
.hero-sub{margin-top:16px;font-size:18px;line-height:1.7;color:var(--t2)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:26px;font-size:13px;color:var(--t3)}
.hero-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--t4)}

/* ---------- Sections ---------- */
.section{padding:96px 0;position:relative}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.section-title{font-size:clamp(22px,2.4vw,30px);line-height:1.3;font-weight:800;color:var(--t1)}
.section-title .thin{color:var(--t3);font-weight:500;font-size:15px;display:block;margin-top:8px;letter-spacing:.01em}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--primary);text-transform:none;margin-bottom:12px}
.eyebrow::before{content:"";width:18px;height:1px;background:linear-gradient(90deg,rgba(23,224,192,0),var(--primary))}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split.reverse .split-media{order:2}
.split.reverse .split-text{order:1}
.glass-card{background:rgba(255,255,255,.045);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);border:1px solid var(--line-strong);border-radius:var(--r-xl);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-float)}
.card-pad{padding:32px}
.card-title{font-size:16px;font-weight:700;color:var(--t1);display:flex;align-items:center;justify-content:space-between;gap:12px}
.card-title .tag{font-size:11px;font-weight:600;color:var(--primary);border:1px solid rgba(23,224,192,.35);border-radius:var(--r-sm);padding:2px 8px}

/* bar chart */
.bar-list{margin-top:24px;display:flex;flex-direction:column;gap:18px}
.bar-row .bar-top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:14px;color:var(--t2)}
.bar-row .bar-val{font-family:var(--mono);font-size:13px;color:var(--primary)}
.bar-track{margin-top:8px;height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.07);overflow:hidden}
.bar-fill{height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,#0E9E8C,#17E0C0);box-shadow:0 0 14px rgba(23,224,192,.35)}
.bar-fill.alt{background:linear-gradient(90deg,#4B3BB0,#7C5CFF);box-shadow:0 0 14px rgba(124,92,255,.3)}
.bar-fill.orange{background:linear-gradient(90deg,#C2601F,#FF8A3D);box-shadow:0 0 14px rgba(255,138,61,.3)}
.bar-note{margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.06);font-size:13px;color:var(--t3);line-height:1.8}

/* text blocks */
.text-block + .text-block{margin-top:28px;padding-top:28px;border-top:1px solid rgba(255,255,255,.06)}
.text-block h3{font-size:18px;font-weight:700;color:var(--t1);line-height:1.5;margin-bottom:10px}
.text-block p{font-size:15px;line-height:1.85;color:var(--t2)}
.media-img{width:100%;height:150px;object-fit:cover;border-radius:var(--r-md);margin-bottom:24px}
.path-list{display:flex;flex-direction:column;gap:18px}
.path-item{display:flex;gap:14px;align-items:flex-start}
.path-num{flex:0 0 auto;font-family:var(--mono);font-size:13px;font-weight:700;color:var(--primary);border:1px solid rgba(23,224,192,.32);border-radius:var(--r-sm);padding:3px 8px;line-height:1.4}
.path-item h4{font-size:15px;font-weight:600;color:var(--t1);margin-bottom:4px}
.path-item p{font-size:13px;line-height:1.75;color:var(--t3)}
.divider-fade{height:1px;border:0;background:linear-gradient(90deg,rgba(23,224,192,0),rgba(23,224,192,.4),rgba(23,224,192,0));margin:0}

/* ---------- Tier cards ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tier-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow-raise);transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease)}
.tier-card:hover{transform:translateY(-4px);border-color:rgba(23,224,192,.35);box-shadow:var(--shadow-float)}
.tier-card.featured{background:linear-gradient(180deg,rgba(23,224,192,.08),rgba(23,224,192,0) 46%),var(--surface-2);border-color:rgba(23,224,192,.45);box-shadow:var(--shadow-float)}
.tier-flag{position:absolute;top:-11px;right:22px;font-size:11px;font-weight:700;letter-spacing:.06em;color:#1B0C02;background:linear-gradient(135deg,#FFB020,#FF8A3D);border-radius:var(--r-sm);padding:3px 10px}
.badge-level{display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 9px;border-radius:var(--r-sm);border:1px solid rgba(23,224,192,.4);color:var(--primary);font-size:12px;font-weight:600;letter-spacing:.02em}
.badge-level.violet{border-color:rgba(124,92,255,.45);color:#A996FF}
.badge-level.grey{border-color:rgba(255,255,255,.16);color:var(--t3)}
.tier-name{margin-top:18px;font-size:22px;font-weight:800;color:var(--t1);line-height:1.3}
.tier-price{margin-top:6px;font-size:13px;color:var(--t3)}
.tier-desc{margin-top:14px;font-size:14px;line-height:1.8;color:var(--t2);min-height:52px}
.tier-list{margin-top:22px;padding-top:22px;border-top:1px solid rgba(255,255,255,.06);display:flex;flex-direction:column;gap:12px}
.tier-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--t2);line-height:1.6}
.tier-list li.off{color:var(--t4)}
.tier-list li svg{flex:0 0 auto;margin-top:3px}
.tier-actions{margin-top:26px}
.note-line{margin-top:18px;font-size:12px;color:rgba(255,255,255,.45);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-card{background:rgba(255,255,255,.045);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);border:1px solid var(--line-strong);border-radius:var(--r-xl);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-raise);padding:12px 32px;max-width:900px;margin:0 auto}
.faq-item{border-bottom:1px solid rgba(255,255,255,.06)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0;font-size:16px;font-weight:600;color:var(--t1);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-item .chev{flex:0 0 auto;transition:transform .24s var(--ease);color:var(--t3)}
.faq-item[open] .chev{transform:rotate(180deg);color:var(--primary)}
.faq-item .faq-body{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--t2);max-width:760px}

/* ---------- CTA bar ---------- */
.cta-bar{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:34px 38px;border-radius:var(--r-xl);border:1px solid rgba(23,224,192,.35);background:radial-gradient(520px 180px at 12% 50%,rgba(23,224,192,.14),rgba(23,224,192,0) 70%),rgba(255,255,255,.045);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-raise)}
.cta-bar h3{font-size:20px;font-weight:800;color:var(--t1);line-height:1.4}
.cta-bar p{margin-top:8px;font-size:14px;color:var(--t2)}
.cta-bar .cta-actions{display:flex;align-items:center;gap:18px;flex:0 0 auto}

/* ---------- Footer ---------- */
.site-footer{position:relative;background:#070B18;padding:76px 0 0;margin-top:24px;overflow:hidden}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:120px;background:radial-gradient(60% 120px at 50% 0,rgba(23,224,192,.16),rgba(23,224,192,0) 72%);pointer-events:none}
.footer-grid{position:relative;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:56px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark{width:30px;height:30px}
.footer-desc{font-size:14px;line-height:1.85;color:var(--t3);max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:18px;letter-spacing:.02em}
.footer-col li{margin-bottom:12px}
.footer-col li a{font-size:14px;color:rgba(255,255,255,.6)}
.footer-col li a:hover{color:var(--primary)}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.6)}
.footer-contact li svg{flex:0 0 auto;color:var(--t3)}
.footer-bottom{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.06);font-size:13px;color:rgba(255,255,255,.5);flex-wrap:wrap}
.footer-bottom a{color:rgba(255,255,255,.5)}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- Drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(4,8,20,.6);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:70}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;z-index:80;display:flex;flex-direction:column;padding:26px 22px;background:rgba(12,18,38,.90);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);border-left:1px solid rgba(255,255,255,.08);transform:translateX(100%);transition:transform .24s var(--ease);overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer-close{position:absolute;top:12px;right:12px;width:44px;height:44px;border:0;border-radius:12px;background:transparent;color:var(--t2);font-size:22px;line-height:1;cursor:pointer}
.drawer-close:hover{background:rgba(255,255,255,.06);color:var(--t1)}
.drawer-brand{display:flex;align-items:center;gap:10px;margin:6px 0 20px}
.drawer-link{display:flex;align-items:center;height:52px;font-size:15px;color:rgba(255,255,255,.75);border-bottom:1px solid rgba(255,255,255,.06)}
.drawer-link:hover{color:var(--primary)}
.drawer-link.active{color:var(--primary);font-weight:600}
.drawer-cta{margin-top:24px}
.drawer-foot{margin-top:auto;padding-top:24px;border-top:1px solid rgba(255,255,255,.06);font-size:13px;color:var(--t3);line-height:2}
.drawer-foot a{color:var(--t3)}
.drawer-foot a:hover{color:var(--primary)}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
  .footer-grid .footer-col:nth-child(4){grid-column:span 3}
  .footer-grid .footer-col:nth-child(4) ul{display:flex;flex-wrap:wrap;gap:22px}
  .footer-grid .footer-col:nth-child(4) li{margin-bottom:0}
}
@media (max-width:900px){
  .split{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:0}
  .split.reverse .split-text{order:1}
  .tier-grid{grid-template-columns:1fr}
  .tier-desc{min-height:0}
}
@media (max-width:768px){
  .main-nav{display:none}
  .link-quiet{display:none}
  .menu-toggle{display:flex}
  .header-inner{height:64px}
  .section{padding:64px 0}
  .section-tight{padding:56px 0}
  .page-hero{padding:126px 0 48px;min-height:40vh}
  .hero-sub{font-size:16px}
  .card-pad{padding:24px}
  .faq-card{padding:8px 20px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .cta-bar .cta-actions{width:100%;flex-direction:column;align-items:stretch}
  .cta-bar .cta-actions .btn{width:100%}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  body.body-root{font-size:15px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid .footer-col:nth-child(4){grid-column:auto}
  .footer-grid .footer-col:nth-child(4) ul{flex-direction:column;gap:0}
  .footer-grid .footer-col:nth-child(4) li{margin-bottom:12px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .hero-meta{flex-direction:column;align-items:flex-start;gap:8px}
  .hero-meta .dot{display:none}
}
@media (max-width:520px){
  .brand-text{display:none}
  .brand-short{display:inline}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .tier-card:hover{transform:none}
  .btn-primary:hover{transform:none}
}

/* roulang page: category2 */
:root{
    --bg-deep:#070B18;
    --bg-base:#0B1226;
    --surface:#101830;
    --surface-2:#141D38;
    --line:rgba(255,255,255,.07);
    --primary:#17E0C0;
    --primary-deep:#0E9E8C;
    --accent:#FF8A3D;
    --violet:#7C5CFF;
    --ok:#2FD98A;
    --t1:#F2F6FF;
    --t2:rgba(255,255,255,.72);
    --t3:rgba(255,255,255,.48);
    --t4:rgba(255,255,255,.30);
    --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
    --radius-card:20px;
    --radius-lg:24px;
    --radius-xl:28px;
    --shadow-raise:0 12px 32px rgba(0,0,0,.35);
    --shadow-float:0 28px 70px rgba(0,0,0,.5);
    --glass-bg:rgba(255,255,255,.045);
    --glass-line:rgba(255,255,255,.10);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background-color:var(--bg-deep);
    background-image:radial-gradient(900px 420px at 50% 0%, rgba(23,224,192,.06), transparent 70%);
    color:var(--t1);
    font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button,input{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul{padding:0;list-style:none;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 32px;
  }
  .section{padding:96px 0;position:relative;}
  .section-tight{padding:72px 0;}
  .section-title{
    font-size:clamp(22px,2.6vw,32px);
    font-weight:800;
    line-height:1.25;
    letter-spacing:.01em;
  }
  .section-sub{
    margin-top:12px;
    font-size:15px;
    line-height:1.85;
    color:var(--t2);
    max-width:640px;
  }
  .hairline{
    height:1px;
    width:100%;
    background:linear-gradient(90deg,transparent,rgba(23,224,192,.4),transparent);
    border:0;
  }

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:fixed;
    top:0;left:0;right:0;
    z-index:60;
    transition:background 240ms var(--ease),backdrop-filter 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease);
    border-bottom:1px solid transparent;
  }
  .site-header.scrolled{
    background:rgba(12,18,38,.72);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    border-bottom-color:rgba(255,255,255,.08);
    box-shadow:0 12px 32px rgba(0,0,0,.35);
  }
  .nav-wrap{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    height:76px;
  }
  .brand{display:flex;align-items:center;gap:10px;flex:none;}
  .brand-mark{width:32px;height:32px;flex:none;}
  .brand-text{
    font-size:17px;
    font-weight:700;
    letter-spacing:.02em;
    color:var(--t1);
    white-space:nowrap;
  }
  .bt-short{display:none;}

  .main-nav{display:flex;align-items:center;gap:30px;}
  .nav-link{
    position:relative;
    font-size:15px;
    font-weight:500;
    color:var(--t2);
    padding:6px 0;
    transition:color 240ms var(--ease);
    white-space:nowrap;
  }
  .nav-link:hover{color:var(--t1);}
  .nav-link.active{color:var(--t1);font-weight:600;}
  .nav-link.active::after{
    content:"";
    position:absolute;
    left:0;bottom:-4px;
    width:20px;height:2px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--primary),var(--primary-deep));
    box-shadow:0 0 12px rgba(23,224,192,.5);
  }
  .nav-right{display:flex;align-items:center;gap:18px;flex:none;}
  .link-help{
    font-size:14px;
    color:var(--t3);
    transition:color 240ms var(--ease);
    white-space:nowrap;
  }
  .link-help:hover{color:var(--primary);}

  .hamburger{
    display:none;
    width:44px;height:44px;
    border:1px solid rgba(255,255,255,.12);
    border-radius:12px;
    background:rgba(255,255,255,.04);
    cursor:pointer;
    padding:0;
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:6px;
    transition:border-color 240ms var(--ease),background 240ms var(--ease);
  }
  .hamburger:hover{border-color:rgba(23,224,192,.45);background:rgba(23,224,192,.06);}
  .hamburger span{
    display:block;
    width:18px;height:2px;
    border-radius:2px;
    background:var(--primary);
  }

  /* ---------- 移动端抽屉 ---------- */
  .drawer-mask{
    position:fixed;inset:0;
    background:rgba(4,8,20,.6);
    backdrop-filter:blur(2px);
    opacity:0;visibility:hidden;
    transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
    z-index:70;
  }
  .drawer-mask.show{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;
    width:82vw;max-width:360px;
    z-index:80;
    padding:24px 22px 28px;
    background:rgba(12,18,38,.92);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    border-left:1px solid var(--glass-line);
    box-shadow:var(--shadow-float);
    transform:translateX(100%);
    transition:transform 320ms var(--ease);
    display:flex;flex-direction:column;
    overflow-y:auto;
  }
  .drawer.show{transform:translateX(0);}
  .drawer-head{
    display:flex;align-items:center;justify-content:space-between;
    padding-bottom:18px;
    border-bottom:1px solid rgba(255,255,255,.06);
  }
  .drawer-title{font-size:15px;font-weight:700;color:var(--t2);}
  .drawer-close{
    width:36px;height:36px;
    border-radius:10px;
    border:1px solid rgba(255,255,255,.12);
    background:transparent;
    color:var(--t2);
    font-size:20px;line-height:1;
    cursor:pointer;
    transition:color 240ms var(--ease),border-color 240ms var(--ease);
  }
  .drawer-close:hover{color:var(--primary);border-color:rgba(23,224,192,.45);}
  .drawer-nav{display:flex;flex-direction:column;margin-top:8px;}
  .drawer-nav a{
    display:flex;align-items:center;
    height:52px;
    font-size:15px;
    color:var(--t2);
    border-bottom:1px solid rgba(255,255,255,.06);
    transition:color 240ms var(--ease),padding-left 240ms var(--ease);
  }
  .drawer-nav a:hover{color:var(--t1);padding-left:6px;}
  .drawer-nav a.active{color:var(--primary);font-weight:600;}
  .drawer-cta{margin-top:22px;width:100%;}
  .drawer-foot{
    margin-top:auto;
    padding-top:22px;
    border-top:1px solid rgba(255,255,255,.06);
    font-size:13px;
    color:var(--t3);
    line-height:2;
  }

  /* ---------- 按钮 ---------- */
  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:14px 28px;
    border:0;border-radius:999px;
    font-size:15px;font-weight:700;
    color:#04140F;
    background:linear-gradient(135deg,#17E0C0,#0E9E8C);
    box-shadow:0 0 0 1px rgba(23,224,192,.35),0 10px 30px rgba(23,224,192,.28);
    cursor:pointer;
    transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),filter 240ms var(--ease);
    white-space:nowrap;
  }
  .btn-primary:hover{
    filter:brightness(1.08);
    transform:translateY(-2px);
    box-shadow:0 0 0 1px rgba(23,224,192,.5),0 16px 44px rgba(23,224,192,.45);
  }
  .btn-primary:active{
    transform:translateY(0);
    box-shadow:0 0 0 1px rgba(23,224,192,.4),0 6px 18px rgba(23,224,192,.25);
  }
  .btn-primary:focus-visible{outline:2px solid var(--t1);outline-offset:2px;}
  .btn-sm{padding:10px 20px;font-size:14px;}

  .btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:14px 28px;
    border-radius:999px;
    border:1px solid rgba(255,255,255,.18);
    background:transparent;
    color:var(--t1);
    font-size:15px;font-weight:600;
    cursor:pointer;
    transition:background 240ms var(--ease),border-color 240ms var(--ease),transform 240ms var(--ease);
    white-space:nowrap;
  }
  .btn-ghost:hover{
    background:rgba(23,224,192,.06);
    border-color:rgba(23,224,192,.4);
    transform:translateY(-2px);
  }
  .btn-ghost:active{transform:translateY(0);}
  .btn-ghost:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;font-weight:600;
    color:var(--primary);
    transition:gap 240ms var(--ease),color 240ms var(--ease);
  }
  .link-arrow:hover{gap:10px;color:#5CEFD9;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;}

  /* ---------- Hero ---------- */
  .hero-cat2{
    position:relative;
    min-height:36vh;
    padding:152px 0 76px;
    display:flex;align-items:center;justify-content:center;
    text-align:center;
    background-image:
      linear-gradient(180deg,rgba(7,11,24,.94) 0%,rgba(7,11,24,.78) 45%,rgba(7,11,24,.96) 100%),
      url("/assets/images/backpic/back-2.webp");
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line);
  }
  .hero-cat2::after{
    content:"";
    position:absolute;inset:0;
    background-image:radial-gradient(rgba(23,224,192,.24) 1px,transparent 1px);
    background-size:28px 28px;
    opacity:.5;
    pointer-events:none;
  }
  .hero-inner{position:relative;z-index:2;width:100%;}
  .crumb{
    display:flex;align-items:center;justify-content:center;gap:8px;
    font-size:13px;
    color:var(--t3);
    margin-bottom:20px;
  }
  .crumb a{transition:color 240ms var(--ease);}
  .crumb a:hover{color:var(--primary);}
  .crumb .sep{color:var(--t4);}
  .crumb .current{color:var(--primary);}
  .hero-cat2 h1{
    font-size:clamp(28px,3.8vw,44px);
    font-weight:800;
    line-height:1.2;
    letter-spacing:.01em;
  }
  .hero-lead{
    margin:18px auto 0;
    max-width:620px;
    font-size:17px;
    line-height:1.85;
    color:var(--t2);
  }
  .search-shell{
    display:flex;align-items:center;gap:10px;
    max-width:620px;
    margin:32px auto 0;
    padding:8px 8px 8px 20px;
    border-radius:999px;
    background:var(--glass-bg);
    border:1px solid var(--glass-line);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
    text-align:left;
  }
  .search-shell svg{flex:none;color:var(--t3);}
  .search-shell input{
    flex:1;min-width:0;
    height:44px;
    border:0;background:transparent;
    color:var(--t1);
    font-size:15px;
    outline:none;
  }
  .search-shell input::placeholder{color:var(--t4);}
  .search-shell .search-btn{
    flex:none;
    padding:11px 22px;
    border-radius:999px;
    font-size:14px;font-weight:700;
    color:#04140F;
    border:0;cursor:pointer;
    background:linear-gradient(135deg,#17E0C0,#0E9E8C);
    box-shadow:0 8px 24px rgba(23,224,192,.25);
    transition:filter 240ms var(--ease),box-shadow 240ms var(--ease);
  }
  .search-shell .search-btn:hover{filter:brightness(1.08);box-shadow:0 10px 32px rgba(23,224,192,.42);}
  .search-shell .search-btn:focus-visible{outline:2px solid var(--t1);outline-offset:2px;}

  /* ---------- 筛选胶囊 ---------- */
  .filter-bar{
    display:flex;flex-wrap:wrap;gap:10px;
    margin:0 0 34px;
  }
  .pill{
    display:inline-flex;align-items:center;
    padding:9px 18px;
    border-radius:999px;
    border:1px solid rgba(255,255,255,.14);
    font-size:14px;
    color:var(--t2);
    transition:background 240ms var(--ease),border-color 240ms var(--ease),color 240ms var(--ease),transform 240ms var(--ease);
  }
  .pill:hover{
    background:rgba(23,224,192,.06);
    border-color:rgba(23,224,192,.45);
    color:var(--t1);
    transform:translateY(-1px);
  }
  .pill.active{
    background:linear-gradient(135deg,#17E0C0,#0E9E8C);
    color:#04140F;
    font-weight:700;
    border-color:transparent;
    box-shadow:0 8px 24px rgba(23,224,192,.25);
  }

  /* ---------- 时间轴 ---------- */
  .timeline{
    position:relative;
    padding-left:34px;
  }
  .timeline::before{
    content:"";
    position:absolute;
    left:7px;top:12px;bottom:12px;
    width:2px;
    border-radius:2px;
    background:linear-gradient(180deg,rgba(23,224,192,.9),rgba(23,224,192,.16) 60%,rgba(23,224,192,.02));
  }
  .tl-item{
    position:relative;
    padding:0 0 26px;
    border-bottom:1px solid rgba(255,255,255,.06);
    margin-bottom:26px;
  }
  .tl-item:last-child{border-bottom:0;margin-bottom:0;padding-bottom:6px;}
  .tl-item::before{
    content:"";
    position:absolute;
    left:-34px;top:8px;
    width:16px;height:16px;
    border-radius:50%;
    background:var(--bg-deep);
    border:2px solid var(--primary);
    box-shadow:0 0 0 4px rgba(23,224,192,.10);
  }
  .tl-meta{
    display:flex;align-items:center;gap:12px;
    flex-wrap:wrap;
    margin-bottom:8px;
  }
  .tl-date{
    font-family:var(--mono);
    font-size:13px;
    letter-spacing:.04em;
    color:var(--primary);
  }
  .badge-cat{
    display:inline-flex;align-items:center;
    padding:2px 10px;
    border-radius:999px;
    font-size:12px;
    color:var(--t2);
    background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.10);
  }
  .tl-title{
    font-size:17px;
    font-weight:700;
    line-height:1.5;
    color:var(--t1);
    transition:color 240ms var(--ease);
  }
  .tl-item:hover .tl-title{color:var(--primary);}
  .tl-desc{
    margin-top:8px;
    font-size:15px;
    line-height:1.85;
    color:var(--t2);
  }
  .tl-foot{
    display:flex;align-items:center;gap:20px;
    flex-wrap:wrap;
    margin-top:34px;
  }

  /* ---------- 图文区块 ---------- */
  .split{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:48px;
    align-items:center;
  }
  .figure{
    position:relative;
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--surface);
    box-shadow:var(--shadow-raise);
  }
  .figure img{width:100%;aspect-ratio:16/11;object-fit:cover;}
  .figure::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(7,11,24,.05),rgba(7,11,24,.65));
    pointer-events:none;
  }
  .figure figcaption{
    position:absolute;
    left:20px;bottom:16px;
    z-index:2;
    font-size:13px;
    color:rgba(255,255,255,.72);
  }
  .split h2{
    font-size:clamp(20px,2.4vw,26px);
    font-weight:800;
    line-height:1.35;
  }
  .split p{
    margin-top:16px;
    font-size:15px;
    line-height:1.9;
    color:var(--t2);
  }
  .point-list{margin-top:22px;display:grid;gap:14px;}
  .point-list li{
    display:flex;gap:12px;align-items:flex-start;
    font-size:14px;
    line-height:1.8;
    color:var(--t2);
  }
  .point-list .dot{
    flex:none;
    width:8px;height:8px;
    margin-top:9px;
    border-radius:2px;
    background:var(--primary);
    box-shadow:0 0 10px rgba(23,224,192,.6);
  }

  /* ---------- FAQ ---------- */
  .faq-card{
    border-radius:var(--radius-lg);
    padding:32px;
    background:var(--glass-bg);
    border:1px solid var(--glass-line);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-raise);
  }
  .faq-item{border-bottom:1px solid rgba(255,255,255,.06);}
  .faq-item:last-child{border-bottom:0;}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:18px 0;
    font-size:16px;font-weight:600;
    color:var(--t1);
    cursor:pointer;
    list-style:none;
    transition:color 240ms var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"";
    flex:none;
    width:9px;height:9px;
    margin-right:4px;
    border-right:1.6px solid var(--t3);
    border-bottom:1.6px solid var(--t3);
    transform:rotate(45deg);
    transition:transform 240ms var(--ease),border-color 240ms var(--ease);
  }
  .faq-item[open] summary{color:var(--primary);}
  .faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--primary);}
  .faq-body{
    padding:0 0 20px;
    max-width:900px;
    font-size:15px;
    line-height:1.85;
    color:var(--t2);
  }

  /* ---------- CTA ---------- */
  .cta-bar{
    position:relative;
    display:flex;align-items:center;justify-content:space-between;gap:28px;
    padding:32px 36px;
    border-radius:var(--radius-xl);
    background:var(--glass-bg);
    border:1px solid rgba(23,224,192,.35);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 28px 70px rgba(0,0,0,.4);
    overflow:hidden;
  }
  .cta-bar::before{
    content:"";
    position:absolute;inset:0;
    background:radial-gradient(560px 200px at 84% 50%,rgba(23,224,192,.12),transparent 70%);
    pointer-events:none;
  }
  .cta-text{position:relative;z-index:2;}
  .cta-text h2{font-size:clamp(19px,2.2vw,24px);font-weight:800;line-height:1.4;}
  .cta-text p{margin-top:10px;font-size:15px;line-height:1.85;color:var(--t2);}
  .cta-actions{position:relative;z-index:2;display:flex;align-items:center;gap:22px;flex-wrap:wrap;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    position:relative;
    background:#070B18;
    border-top:1px solid var(--line);
    padding:72px 0 0;
    overflow:hidden;
  }
  .site-footer::before{
    content:"";
    position:absolute;top:0;left:50%;
    transform:translateX(-50%);
    width:900px;height:120px;
    background:radial-gradient(closest-side,rgba(23,224,192,.18),transparent);
    pointer-events:none;
  }
  .footer-grid{
    position:relative;
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1.2fr;
    gap:40px;
    padding-bottom:56px;
  }
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand .brand-mark{width:30px;height:30px;}
  .footer-desc{
    font-size:14px;
    line-height:1.9;
    color:var(--t3);
    max-width:340px;
  }
  .footer-col h4{
    font-size:15px;
    font-weight:700;
    color:var(--t1);
    margin-bottom:18px;
  }
  .footer-col ul{display:grid;gap:12px;}
  .footer-col a{
    font-size:14px;
    color:var(--t3);
    transition:color 240ms var(--ease),padding-left 240ms var(--ease);
  }
  .footer-col a:hover{color:var(--primary);padding-left:4px;}
  .footer-contact li{
    display:flex;align-items:center;gap:10px;
    font-size:14px;
    color:var(--t3);
  }
  .footer-contact svg{flex:none;color:var(--t4);}
  .footer-bottom{
    position:relative;
    display:flex;align-items:center;justify-content:space-between;
    gap:16px;flex-wrap:wrap;
    padding:22px 0 26px;
    border-top:1px solid var(--line);
    font-size:13px;
    color:rgba(255,255,255,.5);
  }
  .footer-bottom-links{display:flex;align-items:center;gap:20px;}
  .footer-bottom-links a{transition:color 240ms var(--ease);}
  .footer-bottom-links a:hover{color:var(--primary);}

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .section{padding:72px 0;}
    .split{gap:32px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  }
  @media (max-width:900px){
    .main-nav{display:none;}
    .link-help{display:none;}
    .hamburger{display:flex;}
    .nav-right .btn-primary{display:none;}
  }
  @media (max-width:767px){
    .container{padding:0 18px;}
    .nav-wrap{height:64px;}
    .bt-full{display:none;}
    .bt-short{display:inline;}
    .brand-text{font-size:16px;}
    .section{padding:56px 0;}
    .section-tight{padding:48px 0;}
    .hero-cat2{padding:112px 0 56px;min-height:36vh;}
    .hero-lead{font-size:15px;}
    .search-shell{padding:6px 6px 6px 16px;}
    .search-shell input{height:40px;font-size:14px;}
    .search-shell .search-btn{padding:9px 16px;}
    .split{grid-template-columns:1fr;gap:26px;}
    .faq-card{padding:22px;}
    .faq-item summary{font-size:15px;padding:16px 0;}
    .cta-bar{flex-direction:column;align-items:flex-start;padding:26px 22px;}
    .cta-actions{width:100%;}
    .cta-actions .btn-primary{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:40px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
    .tl-title{font-size:16px;}
    .tl-desc{font-size:14.5px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;}
    html{scroll-behavior:auto;}
  }