/* roulang page: index */
:root{
  --bg-0:#05090F; --bg-1:#0A131B; --bg-2:#0F1A23; --bg-inset:rgba(0,0,0,.28);
  --c-1:#16D9B4; --c-1-hi:#3BF0CE; --c-1-dim:rgba(22,217,180,.14);
  --c-2:#FF7A2F; --c-3:#5B8CFF;
  --ok:#31D07A; --warn:#FFB020; --danger:#FF5D5D;
  --t-1:#E9F2F6; --t-2:#9AAEBC; --t-3:#647887;
  --line:rgba(255,255,255,.08); --line-hi:rgba(22,217,180,.35);
  --glass:rgba(15,26,35,.62);
  --r-lg:18px; --r-md:12px; --r-sm:10px;
  --shadow:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px -24px rgba(0,0,0,.85);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg-0);color:var(--t-1);font-family:var(--font);font-size:16px;line-height:1.8;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--c-1);outline-offset:2px;border-radius:6px}
.container{max-width:1280px;margin:0 auto;padding:0 32px;width:100%}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:80;border-bottom:1px solid transparent;transition:background-color .2s var(--ease),border-color .2s var(--ease),backdrop-filter .2s var(--ease)}
.site-header.scrolled{background:var(--glass);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-bottom-color:var(--line)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,var(--c-1),#0E9F86);display:grid;place-items:center;box-shadow:0 0 0 1px rgba(22,217,180,.35),0 8px 20px -10px rgba(22,217,180,.7);flex:0 0 auto}
.brand-mark svg{width:17px;height:17px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.01em}
.brand-sub{font-size:11px;color:var(--t-3);letter-spacing:.06em;font-weight:500}
.nav-main{display:flex;align-items:center;gap:2px;margin-left:12px}
.nav-link{position:relative;padding:8px 12px;font-size:14px;font-weight:500;color:var(--t-2);border-radius:8px;white-space:nowrap;transition:color .2s var(--ease),background-color .2s var(--ease)}
.nav-link:hover{color:var(--t-1);background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--t-1)}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;background:var(--c-1)}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:auto}
.command-search{position:relative;display:flex;align-items:center;width:262px;height:36px;border-radius:10px;background:rgba(255,255,255,.04);border:1px solid var(--line);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.command-search:focus-within{border-color:var(--line-hi);box-shadow:0 0 0 3px rgba(22,217,180,.12)}
.command-search .cs-icon{width:15px;height:15px;margin-left:12px;color:var(--t-3);flex:0 0 auto}
.command-search input{flex:1;min-width:0;height:100%;background:transparent;border:0;outline:none;font-size:13px;padding:0 8px;color:var(--t-1)}
.command-search input::placeholder{color:var(--t-3)}
.cs-kbd{font-size:11px;color:var(--t-3);border:1px solid var(--line);border-radius:6px;padding:1px 6px;margin-right:8px;flex:0 0 auto;line-height:1.5}
.icon-btn{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;color:var(--t-2);transition:all .2s var(--ease);flex:0 0 auto}
.icon-btn svg{width:17px;height:17px}
.icon-btn:hover{border-color:var(--line-hi);color:var(--c-1-hi);transform:translateY(-1px)}
.hamburger{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.04);position:relative;flex:0 0 auto}
.hamburger span{position:absolute;left:10px;right:10px;height:2px;background:var(--t-1);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.hamburger span:nth-child(1){top:13px}
.hamburger span:nth-child(2){top:18px}
.hamburger span:nth-child(3){top:23px}
.hamburger.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.hamburger.is-open span:nth-child(2){opacity:0}
.hamburger.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.mobile-drawer{position:fixed;left:0;right:0;top:64px;bottom:0;z-index:70;background:var(--bg-1);padding:20px 18px 28px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;visibility:hidden;opacity:0;transform:translateY(-10px);pointer-events:none;transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease)}
.mobile-drawer.is-open{visibility:visible;opacity:1;transform:none;pointer-events:auto}
.mobile-drawer .drawer-link{display:flex;align-items:center;justify-content:space-between;font-size:17px;font-weight:500;color:var(--t-2);height:56px;border-bottom:1px solid var(--line);padding:0 4px;transition:color .2s var(--ease)}
.mobile-drawer .drawer-link.is-active{color:var(--c-1)}
.mobile-drawer .drawer-search{display:flex;align-items:center;height:44px;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid var(--line);margin-bottom:12px}
.mobile-drawer .drawer-search svg{width:16px;height:16px;margin-left:14px;color:var(--t-3)}
.mobile-drawer .drawer-search input{flex:1;background:transparent;border:0;outline:none;font-size:14px;padding:0 10px}
.drawer-cta{margin-top:auto;padding-top:20px}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:all .2s var(--ease)}
.btn svg{width:15px;height:15px;flex:0 0 auto}
.btn-sm{height:36px;padding:0 18px;font-size:13px}
.btn-md{height:44px;padding:0 24px;font-size:14px}
.btn-lg{height:48px;padding:0 28px;font-size:15px}
.btn-primary{background:var(--c-1);color:#04140F;box-shadow:0 0 0 1px rgba(22,217,180,.4),0 10px 30px -10px rgba(22,217,180,.55)}
.btn-primary:hover{background:var(--c-1-hi);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(22,217,180,.5),0 14px 34px -6px rgba(22,217,180,.6)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.16);color:var(--t-1)}
.btn-ghost:hover{border-color:var(--line-hi);color:var(--c-1-hi);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.99)}
.btn-ghost svg{transition:transform .2s var(--ease)}
.btn-ghost:hover svg{transform:translateX(3px)}
.btn-link{color:var(--c-1);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;padding:0;transition:color .2s var(--ease)}
.btn-link svg{width:14px;height:14px;transition:transform .2s var(--ease)}
.btn-link:hover{color:var(--c-1-hi)}
.btn-link:hover svg{transform:translateX(3px)}

/* ============ Hero ============ */
.hero{position:relative;padding:64px 0 88px;overflow:hidden;border-bottom:1px solid var(--line);background:var(--bg-0)}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(900px 480px at 78% 8%,rgba(22,217,180,.10),transparent 62%),radial-gradient(700px 420px at 4% 90%,rgba(91,140,255,.07),transparent 60%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;min-height:560px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--c-1);background:var(--c-1-dim);border:1px solid var(--line-hi);border-radius:999px;padding:5px 14px;margin-bottom:22px}
.eyebrow i{width:6px;height:6px;border-radius:999px;background:var(--c-1);box-shadow:0 0 8px var(--c-1);display:block}
.hero h1{font-size:48px;line-height:1.15;font-weight:700;letter-spacing:-.02em;max-width:14em}
.hero h1 em{font-style:normal;color:var(--c-1-hi)}
.hero-sub{font-size:17px;line-height:1.85;color:var(--t-2);margin-top:20px;max-width:600px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-chip{font-size:13px;padding:6px 14px;border-radius:999px;border:1px solid var(--line);color:var(--t-2);background:rgba(255,255,255,.03);transition:all .2s var(--ease)}
.hero-chip:hover{border-color:var(--line-hi);color:var(--c-1-hi);transform:translateY(-1px)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-bar{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);display:flex;align-items:center;overflow-x:auto;scrollbar-width:none}
.trust-bar::-webkit-scrollbar{display:none}
.trust-bar span{font-size:12px;color:var(--t-3);letter-spacing:.05em;padding:0 20px;border-left:1px solid var(--line);white-space:nowrap}
.trust-bar span:first-child{padding-left:0;border-left:0}
.hero-visual{position:relative;border-radius:20px;overflow:hidden;height:440px;border:1px solid var(--line);box-shadow:var(--shadow);background:var(--bg-2)}
.hero-visual>img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(5,9,15,.62),rgba(5,9,15,.9));z-index:2}
.float-card{position:absolute;z-index:4;background:var(--glass);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border:1px solid var(--line);border-radius:14px;padding:14px 16px;box-shadow:var(--shadow);animation:floaty 6s var(--ease) infinite}
.float-card::before{content:"";position:absolute;top:0;left:12px;width:40%;height:1px;background:linear-gradient(90deg,transparent,rgba(22,217,180,.45),transparent)}
.fc-a{top:20px;left:20px}
.fc-b{bottom:20px;right:20px;min-width:200px;animation-delay:1.2s}
.fc-num{font-family:var(--mono);font-size:30px;font-weight:800;line-height:1.1;color:var(--c-1-hi);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.fc-label{font-size:12px;color:var(--t-2);margin-top:4px}
.fc-row{display:flex;align-items:center;justify-content:space-between;gap:14px;font-size:12px;color:var(--t-2)}
.fc-row+.fc-row{margin-top:9px}
.fc-bar{flex:1;height:4px;border-radius:999px;background:rgba(255,255,255,.09);overflow:hidden;max-width:110px}
.fc-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-1),var(--c-1-hi))}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-title{font-size:32px;line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-title em{font-style:normal;color:var(--c-1-hi)}
.section-desc{font-size:15px;color:var(--t-2);margin-top:12px;max-width:660px;line-height:1.8}
.sec-note{font-size:13px;color:var(--t-3);text-align:right;line-height:1.6}
.badge{display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 10px;border-radius:999px;font-size:12px;line-height:1;background:var(--c-1-dim);color:var(--c-1-hi);border:1px solid rgba(22,217,180,.2)}

/* ============ 指标看板 ============ */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-card{position:relative;background:var(--bg-2);border:1px solid var(--line);border-radius:18px;padding:24px;min-height:168px;transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.metric-card::before{content:"";position:absolute;top:0;left:24px;width:28px;height:3px;border-radius:0 0 3px 3px;background:var(--c-1)}
.metric-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow)}
.metric-value{font-family:var(--mono);font-size:40px;font-weight:800;line-height:1.1;letter-spacing:-.02em;font-variant-numeric:tabular-nums;margin-top:14px;transition:color .2s var(--ease)}
.metric-card:hover .metric-value{color:var(--c-1-hi)}
.metric-label{font-size:14px;color:var(--t-2);margin-top:8px}
.metric-delta{position:absolute;right:20px;bottom:20px;font-size:12px;border-radius:999px;padding:3px 10px;display:inline-flex;align-items:center;gap:4px}
.delta-up{color:var(--ok);background:rgba(49,208,122,.12)}
.delta-hold{color:var(--c-2);background:rgba(255,122,47,.12)}

/* ============ 服务矩阵 Bento ============ */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.bento-a{grid-column:span 6;grid-row:span 2}
.bento-b{grid-column:span 3}
.bento-c{grid-column:span 3}
.bento-d{grid-column:span 3}
.bento-e{grid-column:span 3}
.bento-f{grid-column:span 6}
.svc-card{position:relative;display:flex;flex-direction:column;gap:14px;background:var(--bg-2);border:1px solid var(--line);border-radius:18px;padding:24px;overflow:hidden;transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.svc-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow)}
.svc-icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:var(--c-1);background:var(--c-1-dim);border:1px solid rgba(22,217,180,.2);flex:0 0 auto}
.svc-icon svg{width:20px;height:20px}
.svc-title{font-size:20px;font-weight:600;line-height:1.4}
.svc-text{font-size:14px;color:var(--t-2);line-height:1.78}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:12px;padding:3px 10px;border-radius:999px;background:var(--c-1-dim);color:var(--c-1-hi);border:1px solid rgba(22,217,180,.18)}
.svc-more{margin-top:auto;font-size:13px;font-weight:600;color:var(--c-1);display:inline-flex;align-items:center;gap:6px}
.svc-more svg{width:14px;height:14px;transition:transform .2s var(--ease)}
.svc-card:hover .svc-more svg{transform:translateX(3px)}
.svc-card.primary{background:linear-gradient(180deg,rgba(22,217,180,.07),rgba(15,26,35,.92) 58%)}
.svc-card.primary{flex-direction:row;align-items:stretch;gap:22px}
.svc-main{flex:1;display:flex;flex-direction:column;gap:14px;min-width:0}
.svc-figure{position:relative;flex:0 0 200px;border-radius:14px;overflow:hidden;border:1px solid rgba(22,217,180,.3);background:var(--bg-1)}
.svc-figure img{width:100%;height:100%;object-fit:cover}
.mini-metric{position:absolute;left:10px;bottom:10px;font-size:12px;font-family:var(--mono);background:rgba(5,9,15,.78);border:1px solid var(--line-hi);border-radius:8px;padding:4px 10px;color:var(--c-1);letter-spacing:-.01em}

/* ============ 对比 ============ */
.compare-list{display:flex;flex-direction:column;gap:12px}
.compare-row{display:grid;grid-template-columns:1fr 56px 1fr;align-items:center}
.compare-side{display:flex;flex-direction:column;justify-content:center;gap:9px;height:64px;padding:0 20px;border-radius:14px}
.compare-before{background:var(--bg-2);border:1px solid var(--line)}
.compare-after{background:var(--glass);border:1px solid var(--line-hi);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.cs-label{font-size:14px;line-height:1.35;color:var(--t-2)}
.compare-after .cs-label{color:var(--t-1)}
.cs-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.cs-gain{font-size:12px;font-family:var(--mono);color:var(--c-2);white-space:nowrap}
.bar{height:4px;width:100%;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px}
.bar-muted i{background:rgba(255,255,255,.22)}
.bar-live i{background:linear-gradient(90deg,var(--c-1),var(--c-1-hi))}
.compare-pivot{display:grid;place-items:center}
.pivot-badge{width:32px;height:32px;border-radius:999px;display:grid;place-items:center;color:var(--c-1);background:var(--bg-0);border:1px solid var(--line-hi);box-shadow:0 0 0 6px rgba(5,9,15,.9)}
.pivot-badge svg{width:15px;height:15px}

/* ============ 资讯 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow)}
.news-thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-cat{position:absolute;top:12px;left:12px;font-size:11px;padding:3px 10px;border-radius:999px;background:rgba(22,217,180,.18);color:var(--c-1-hi);border:1px solid rgba(22,217,180,.32);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s var(--ease)}
.news-card:hover .news-title{color:var(--c-1-hi)}
.news-sum{font-size:14px;color:var(--t-2);line-height:1.72;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--t-3)}
.news-meta a{color:var(--t-3);transition:color .2s var(--ease);display:inline-flex;align-items:center;gap:5px}
.news-meta a:hover{color:var(--c-1)}
.news-meta svg{width:13px;height:13px}
.empty-state{min-height:220px;border:1px dashed var(--line);border-radius:18px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:32px;color:var(--t-2);background:rgba(255,255,255,.015)}
.empty-state svg{width:34px;height:34px;color:var(--t-3)}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-side{position:sticky;top:88px}
.faq-side .section-desc{margin-bottom:22px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{position:relative;border-bottom:1px solid var(--line)}
.faq-item::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;border-radius:2px;background:var(--c-1);opacity:0;transition:opacity .2s var(--ease)}
.faq-item.is-open::before{opacity:1}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0;text-align:left;font-size:17px;font-weight:600;color:var(--t-1);line-height:1.5;transition:padding .2s var(--ease),color .2s var(--ease)}
.faq-q:hover{color:var(--c-1-hi)}
.faq-item.is-open .faq-q{padding-left:16px}
.faq-plus{position:relative;width:20px;height:20px;flex:0 0 auto}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--t-2);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease),background-color .2s var(--ease)}
.faq-plus::before{top:9px;left:0;width:20px;height:2px}
.faq-plus::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-plus::after{transform:rotate(90deg);opacity:0}
.faq-item.is-open .faq-plus::before{background:var(--c-1)}
.faq-a{max-height:0;overflow:hidden;font-size:15px;line-height:1.85;color:var(--t-2);transition:max-height .3s var(--ease),padding .3s var(--ease)}
.faq-item.is-open .faq-a{padding:0 0 20px 16px}

/* ============ CTA 表单 ============ */
.cta-card{position:relative;display:grid;grid-template-columns:5fr 7fr;gap:48px;background:var(--glass);border:1px solid var(--line);border-radius:24px;padding:44px;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 0 70px -34px rgba(22,217,180,.75),var(--shadow);overflow:hidden}
.cta-card::before{content:"";position:absolute;top:0;left:44px;width:36%;height:1px;background:linear-gradient(90deg,transparent,rgba(22,217,180,.5),transparent)}
.cta-title{font-size:28px;font-weight:700;line-height:1.3;letter-spacing:-.01em}
.cta-desc{font-size:15px;color:var(--t-2);line-height:1.8;margin-top:14px}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.cta-points li{display:flex;gap:10px;font-size:14px;color:var(--t-2);line-height:1.7}
.cta-points li i{width:14px;height:14px;border-radius:4px;background:var(--c-1-dim);border:1px solid var(--line-hi);display:grid;place-items:center;flex:0 0 auto;margin-top:5px}
.cta-points li i::after{content:"";width:6px;height:6px;border-radius:1px;background:var(--c-1);display:block}
.cta-contact{margin-top:26px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--t-3);line-height:1.9}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field.full{grid-column:span 2}
.form-label{font-size:13px;color:var(--t-2)}
.form-input,.form-select,.form-textarea{width:100%;background:var(--bg-inset);border:1px solid var(--line);border-radius:12px;height:46px;padding:0 14px;font-size:14px;color:var(--t-1);outline:none;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease)}
.form-textarea{height:100px;padding:12px 14px;resize:vertical;line-height:1.7}
.form-input::placeholder,.form-textarea::placeholder{color:var(--t-3)}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--line-hi);box-shadow:0 0 0 3px rgba(22,217,180,.12);background:rgba(0,0,0,.34)}
.form-select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23647887' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:38px}
.form-select option{background:#0F1A23;color:#E9F2F6}
.form-tip{font-size:12px;color:var(--t-3);margin-top:12px;line-height:1.7}
.form-msg{font-size:13px;color:var(--c-1);margin-top:12px;min-height:20px}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-note{font-size:14px;color:var(--t-2);line-height:1.8;max-width:280px}
.social-row{display:flex;gap:10px;margin-top:20px}
.social-btn{width:36px;height:36px;border-radius:999px;border:1px solid var(--line);display:grid;place-items:center;color:var(--t-2);transition:all .2s var(--ease)}
.social-btn svg{width:16px;height:16px}
.social-btn:hover{border-color:var(--line-hi);color:var(--c-1);transform:translateY(-2px)}
.footer-title{font-size:14px;font-weight:600;color:var(--t-1);margin-bottom:18px;letter-spacing:.02em}
.footer-list li+li{margin-top:12px}
.footer-list a{font-size:14px;color:var(--t-2);transition:color .2s var(--ease)}
.footer-list a:hover{color:var(--c-1)}
.footer-contact li{position:relative;padding-left:14px;font-size:14px;color:var(--t-2);line-height:1.8;margin-top:14px}
.footer-contact li:first-child{margin-top:0}
.footer-contact li::before{content:"";position:absolute;left:0;top:5px;width:2px;height:15px;border-radius:2px;background:var(--c-1);opacity:.8}
.footer-bottom{margin-top:56px;border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--t-3)}
.footer-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .fb-links span{transition:color .2s var(--ease);cursor:pointer}
.footer-bottom .fb-links span:hover{color:var(--t-2)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav-main{margin-left:4px}
  .nav-link{padding:8px 10px;font-size:13px}
  .command-search{width:210px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-main,.command-search,.nav-right .icon-btn{display:none}
  .hamburger{display:block}
  .hero{padding:48px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:36px;min-height:0}
  .hero h1{font-size:34px;max-width:none}
  .hero-visual{height:300px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .bento{grid-template-columns:repeat(6,1fr)}
  .bento-a,.bento-f{grid-column:span 6;grid-row:auto}
  .bento-b,.bento-c,.bento-d,.bento-e{grid-column:span 3}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-side{position:static}
  .cta-card{grid-template-columns:1fr;gap:32px;padding:32px}
  .cta-card::before{left:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .compare-row{grid-template-columns:1fr 44px 1fr}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .section-title{font-size:24px}
  .sec-note{text-align:left}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15px}
  .hero-visual{height:250px}
  .fc-num{font-size:24px}
  .metric-grid{gap:16px}
  .metric-card{padding:20px;min-height:150px}
  .metric-value{font-size:32px}
  .bento{grid-template-columns:1fr;gap:16px}
  .bento-a,.bento-b,.bento-c,.bento-d,.bento-e,.bento-f{grid-column:span 1}
  .svc-card{padding:20px}
  .svc-card.primary{flex-direction:column}
  .svc-figure{flex:0 0 auto;height:156px}
  .news-grid{grid-template-columns:1fr;gap:16px}
  .compare-row{grid-template-columns:1fr;gap:10px}
  .compare-pivot{justify-content:flex-start;margin:2px 0 2px 14px}
  .pivot-badge{transform:rotate(90deg)}
  .compare-side{height:auto;padding:14px 16px}
  .cs-top{flex-direction:column;align-items:flex-start;gap:4px}
  .faq-q{font-size:16px;padding:18px 0}
  .faq-wrap{gap:24px}
  .cta-card{padding:22px;border-radius:20px}
  .cta-title{font-size:22px}
  .form-grid{grid-template-columns:1fr;gap:14px}
  .form-field.full{grid-column:span 1}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .float-card{animation:none}
  .svc-card:hover,.news-card:hover,.metric-card:hover{transform:none}
}

/* roulang page: article */
:root{
  --bg-0:#05090F; --bg-1:#0A131B; --bg-2:#0F1A23; --bg-inset:rgba(0,0,0,.28);
  --c-1:#16D9B4; --c-1-hi:#3BF0CE; --c-1-dim:rgba(22,217,180,.14);
  --c-2:#FF7A2F; --c-3:#5B8CFF;
  --ok:#31D07A; --warn:#FFB020; --danger:#FF5D5D;
  --t-1:#E9F2F6; --t-2:#9AAEBC; --t-3:#647887;
  --line:rgba(255,255,255,.08); --line-hi:rgba(22,217,180,.35);
  --glass:rgba(15,26,35,.62);
  --r-xl:24px; --r-lg:18px; --r-md:12px; --r-sm:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px -24px rgba(0,0,0,.85);
  --shadow-btn:0 0 0 1px rgba(22,217,180,.4), 0 10px 30px -10px rgba(22,217,180,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);background:var(--bg-0);color:var(--t-1);
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-1);outline-offset:2px;border-radius:6px;
}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(22,217,180,.3);color:#04140F}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* ---------- 顶部阅读进度 ---------- */
.read-progress{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--c-1),var(--c-1-hi));z-index:70;transition:width 120ms linear}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:60;background:transparent;border-bottom:1px solid transparent;transition:background 200ms var(--ease),border-color 200ms var(--ease),backdrop-filter 200ms var(--ease)}
.site-header.is-scrolled{background:var(--glass);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:24px;height:24px;border-radius:8px;display:grid;place-items:center;background:linear-gradient(140deg,var(--c-1-hi),var(--c-1) 55%,#0E9C81);box-shadow:0 6px 18px -8px rgba(22,217,180,.9)}
.brand-mark svg{width:14px;height:14px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.01em}
.brand-sub{font-size:11px;font-weight:500;color:var(--t-3);letter-spacing:.06em}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{position:relative;font-size:14px;font-weight:500;color:var(--t-2);padding:8px 12px;border-radius:8px;transition:color 200ms var(--ease),background 200ms var(--ease)}
.nav-link:hover{color:var(--t-1);background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--t-1)}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--c-1)}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.command-search{display:flex;align-items:center;gap:8px;width:264px;height:36px;padding:0 10px;border-radius:var(--r-sm);background:rgba(255,255,255,.04);border:1px solid var(--line);transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease)}
.command-search:focus-within{border-color:var(--line-hi);box-shadow:0 0 0 3px rgba(22,217,180,.12)}
.command-search svg{width:15px;height:15px;color:var(--t-3);flex:0 0 auto}
.command-search input{flex:1;min-width:0;background:none;border:0;color:var(--t-1);font-size:13px;outline:none}
.command-search input::placeholder{color:var(--t-3)}
.command-search kbd{font-family:var(--mono);font-size:11px;color:var(--t-3);border:1px solid var(--line);border-radius:6px;padding:1px 5px}
.icon-btn{width:36px;height:36px;border-radius:var(--r-sm);display:grid;place-items:center;border:1px solid var(--line);color:var(--t-2);transition:color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease)}
.icon-btn svg{width:17px;height:17px}
.icon-btn:hover{color:var(--c-1);border-color:var(--line-hi);transform:translateY(-1px)}
.menu-toggle{display:none;width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--line);position:relative}
.menu-toggle span{position:absolute;left:10px;right:10px;height:1.6px;background:var(--t-1);border-radius:2px;transition:transform 200ms var(--ease),opacity 200ms var(--ease)}
.menu-toggle span:nth-child(1){top:13px}
.menu-toggle span:nth-child(2){top:18px}
.menu-toggle span:nth-child(3){top:23px}
.menu-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- Drawer ---------- */
.mobile-drawer{position:fixed;inset:0;z-index:65;background:var(--bg-1);display:flex;flex-direction:column;padding:20px;transform:translateY(-100%);opacity:0;visibility:hidden;transition:transform 220ms var(--ease),opacity 220ms var(--ease),visibility 220ms}
.mobile-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-search{display:flex;align-items:center;gap:8px;height:42px;padding:0 12px;border-radius:var(--r-md);background:var(--bg-inset);border:1px solid var(--line);margin-bottom:18px}
.drawer-search input{flex:1;background:none;border:0;color:var(--t-1);font-size:14px;outline:none}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{font-size:17px;color:var(--t-1);padding:0 4px;height:56px;display:flex;align-items:center;border-bottom:1px solid var(--line)}
.drawer-nav a:hover{color:var(--c-1)}
.drawer-foot{margin-top:auto;padding-top:18px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:var(--r-md);transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease),background 200ms var(--ease),color 200ms var(--ease)}
.btn svg{width:16px;height:16px}
.btn-lg{height:48px;padding:0 30px;font-size:15px}
.btn-md{height:40px;padding:0 22px;font-size:14px}
.btn-sm{height:36px;padding:0 18px;font-size:13px}
.btn-primary{background:var(--c-1);color:#04140F;box-shadow:var(--shadow-btn)}
.btn-primary:hover{background:var(--c-1-hi);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(22,217,180,.45),0 14px 34px -6px rgba(22,217,180,.6)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{border:1px solid var(--line);color:var(--t-1);background:transparent}
.btn-ghost:hover{border-color:var(--line-hi);color:var(--c-1-hi);transform:translateY(-1px)}
.btn-text{color:var(--c-1);padding:0;height:auto;font-size:14px}
.btn-text:hover{color:var(--c-1-hi);text-decoration:underline;text-underline-offset:5px}
.btn-text svg{transition:transform 200ms var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}
.btn-back:hover svg{transform:translateX(-3px)}

/* ---------- Badges ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 10px;border-radius:9999px;font-size:11.5px;font-weight:600;letter-spacing:.02em}
.badge-cat{background:var(--c-1-dim);color:var(--c-1-hi)}
.badge-line{border:1px solid var(--line);color:var(--t-2)}

/* ---------- Breadcrumb ---------- */
.crumb-wrap{border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:20px 0;font-size:14px;color:var(--t-3)}
.crumb li{display:flex;align-items:center;gap:10px}
.crumb li+li::before{content:"";width:1px;height:12px;background:var(--line);display:inline-block}
.crumb a:hover{color:var(--c-1)}
.crumb .current{color:var(--t-2)}

/* ---------- Article head ---------- */
.article-hero{position:relative;overflow:hidden;background:var(--bg-1)}
.article-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.18}
.article-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,9,15,.55),rgba(5,9,15,.96))}
.article-hero .inner{position:relative;z-index:1;max-width:900px;padding:64px 0 56px}
.article-title{font-size:36px;line-height:1.25;font-weight:700;letter-spacing:-.02em;margin-top:18px}
.article-lead{font-size:16px;line-height:1.8;color:var(--t-2);margin-top:18px;max-width:760px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--t-3)}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-row .meta-item svg{width:14px;height:14px;color:var(--c-1)}
.share-row{display:flex;align-items:center;gap:8px;margin-left:auto}
.share-btn{width:32px;height:32px;border-radius:9999px;display:grid;place-items:center;border:1px solid var(--line);color:var(--t-2);transition:color 200ms var(--ease),border-color 200ms var(--ease)}
.share-btn svg{width:15px;height:15px}
.share-btn:hover{color:var(--c-1);border-color:var(--line-hi)}

/* ---------- Article layout ---------- */
.article-main{padding:64px 0 80px;background:var(--bg-0)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:56px;max-width:1180px;margin:0 auto}
.article-col{max-width:780px}
.article-body{font-size:17px;line-height:1.95;color:var(--t-2)}
.article-body p{margin:0 0 20px}
.article-body h2{font-size:26px;line-height:1.35;font-weight:700;color:var(--t-1);margin:40px 0 16px;letter-spacing:-.01em}
.article-body h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--t-1);margin:32px 0 14px}
.article-body h4{font-size:17px;font-weight:600;color:var(--t-1);margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:24px}
.article-body ul li,.article-body ol li{margin-bottom:10px}
.article-body ul li{list-style:none;position:relative}
.article-body ul li::before{content:"";position:absolute;left:-20px;top:12px;width:6px;height:6px;border-radius:2px;background:var(--c-1)}
.article-body ol{counter-reset:none;list-style:decimal}
.article-body ol li::marker{color:var(--c-1);font-weight:700}
.article-body a{color:var(--c-3);text-decoration:underline;text-underline-offset:4px}
.article-body a:hover{color:var(--c-1-hi)}
.article-body blockquote{margin:24px 0;padding:18px 20px;border-left:3px solid var(--c-1);border-radius:0 var(--r-md) var(--r-md) 0;background:var(--glass);color:var(--t-2);font-size:15px;line-height:1.85}
.article-body img{border-radius:14px;border:1px solid var(--line);margin:24px 0 8px}
.article-body figcaption{font-size:13px;color:var(--t-3);text-align:center;margin-bottom:24px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px}
.article-body .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;margin:24px 0}
.article-body th{background:var(--c-1-dim);color:var(--t-1);font-size:13px;letter-spacing:.06em;text-align:left;padding:12px 16px}
.article-body td{padding:12px 16px;border-top:1px solid var(--line);color:var(--t-2)}
.article-body code{font-family:var(--mono);font-size:14px;background:#0B1620;border:1px solid rgba(22,217,180,.16);border-radius:6px;padding:2px 6px;color:var(--c-1-hi)}
.article-body pre{background:#0B1620;border:1px solid var(--line);border-radius:var(--r-md);padding:18px;overflow-x:auto;margin:24px 0}
.article-body pre code{border:0;background:none;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ---------- TOC ---------- */
.toc{position:sticky;top:96px;align-self:start;font-size:14px}
.toc-title{font-size:12px;letter-spacing:.12em;color:var(--t-3);margin-bottom:14px}
.toc-list{border-left:1px solid var(--line);padding-left:2px}
.toc-list a{display:block;padding:7px 0 7px 14px;color:var(--t-3);line-height:1.5;border-left:2px solid transparent;margin-left:-2px;transition:color 200ms var(--ease),border-color 200ms var(--ease)}
.toc-list a:hover{color:var(--t-1)}
.toc-list a.is-current{color:var(--c-1);border-left-color:var(--c-1)}

/* ---------- Empty state ---------- */
.empty-state{border:1px dashed var(--line);border-radius:var(--r-lg);padding:48px 24px;text-align:center;background:var(--bg-1)}
.empty-state svg{width:34px;height:34px;color:var(--c-1);margin:0 auto 14px}
.empty-state p{color:var(--t-2);font-size:15px;margin-bottom:18px}

/* ---------- Prev / Next ---------- */
.pager-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:56px}
.pager-card{display:block;padding:22px;border-radius:var(--r-lg);background:var(--bg-2);border:1px solid var(--line);transition:transform 200ms var(--ease),border-color 200ms var(--ease)}
.pager-card:hover{transform:translateY(-4px);border-color:var(--line-hi)}
.pager-card .dir{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.1em;color:var(--t-3);margin-bottom:10px}
.pager-card .dir svg{width:14px;height:14px;color:var(--c-1)}
.pager-card h3{font-size:16px;font-weight:600;color:var(--t-1);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pager-card.is-empty h3{color:var(--t-3);font-weight:500}
.pager-right{text-align:right}
.pager-right .dir{justify-content:flex-end}

/* ---------- Related ---------- */
.related{margin-top:64px;padding-top:48px;border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:24px;font-weight:700;letter-spacing:-.01em}
.section-head .hint{font-size:13px;color:var(--t-3)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.rel-card{display:flex;gap:14px;padding:16px;border-radius:var(--r-lg);background:var(--bg-2);border:1px solid var(--line);transition:transform 200ms var(--ease),border-color 200ms var(--ease)}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-hi)}
.rel-card img{width:88px;height:64px;object-fit:cover;border-radius:10px;border:1px solid var(--line);flex:0 0 auto}
.rel-card h3{font-size:15px;font-weight:600;line-height:1.5;color:var(--t-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .time{font-size:12.5px;color:var(--t-3);margin-top:8px}
.back-home{display:flex;justify-content:center;margin-top:32px}

/* ---------- CTA bar ---------- */
.cta-bar-wrap{padding:0 0 80px;background:var(--bg-0)}
.cta-bar{display:flex;flex-wrap:wrap;align-items:center;gap:20px;padding:26px 30px;border-radius:var(--r-xl);background:var(--glass);backdrop-filter:blur(18px);border:1px solid var(--line);box-shadow:0 0 60px -30px rgba(22,217,180,.6)}
.cta-bar h2{font-size:20px;font-weight:700}
.cta-bar p{font-size:14px;color:var(--t-2);margin-top:6px}
.cta-bar .cta-action{margin-left:auto}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-note{font-size:14px;color:var(--t-2);margin-top:16px;max-width:280px;line-height:1.75}
.social-row{display:flex;gap:10px;margin-top:20px}
.social-btn{width:36px;height:36px;border-radius:9999px;display:grid;place-items:center;border:1px solid var(--line);color:var(--t-2);transition:color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease)}
.social-btn svg{width:16px;height:16px}
.social-btn:hover{color:var(--c-1);border-color:var(--line-hi);transform:translateY(-2px)}
.footer-title{font-size:15px;font-weight:600;color:var(--t-1);margin-bottom:18px}
.footer-list li{margin-bottom:12px}
.footer-list a{font-size:14px;color:var(--t-2)}
.footer-list a:hover{color:var(--c-1)}
.footer-contact li{font-size:14px;color:var(--t-2);padding-left:14px;position:relative;margin-bottom:12px;line-height:1.7}
.footer-contact li::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;border-radius:2px;background:var(--c-1)}
.footer-bottom{margin-top:56px;border-top:1px solid var(--line);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;font-size:12px;color:var(--t-3)}
.footer-bottom .legal{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a:hover{color:var(--c-1)}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .toc{display:none}
  .article-col{max-width:100%}
}
@media (max-width:1024px){
  .nav-main,.command-search{display:none}
  .menu-toggle{display:block}
  .container{padding:0 24px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .article-hero .inner{padding:44px 0 40px}
  .article-title{font-size:28px}
  .article-lead{font-size:15px}
  .article-main{padding:44px 0 56px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:22px;margin:34px 0 14px}
  .article-body h3{font-size:18px;margin:28px 0 12px}
  .pager-grid{grid-template-columns:1fr}
  .pager-right{text-align:left}
  .pager-right .dir{justify-content:flex-start}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-bar{padding:22px}
  .cta-bar .cta-action{margin-left:0;width:100%}
  .cta-bar .cta-action .btn{width:100%}
  .share-row{margin-left:0}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .brand-sub{display:none}
  .article-title{font-size:24px}
  .footer-grid{grid-template-columns:1fr}
  .rel-card img{width:76px;height:58px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
}

/* roulang page: category1 */
:root{
  --bg-0:#05090F;
  --bg-1:#0A131B;
  --bg-2:#0F1A23;
  --bg-inset:rgba(0,0,0,.28);
  --c-1:#16D9B4;
  --c-1-hi:#3BF0CE;
  --c-1-dim:rgba(22,217,180,.14);
  --c-2:#FF7A2F;
  --c-3:#5B8CFF;
  --ok:#31D07A;
  --warn:#FFB020;
  --danger:#FF5D5D;
  --t-1:#E9F2F6;
  --t-2:#9AAEBC;
  --t-3:#647887;
  --line:rgba(255,255,255,.08);
  --line-hi:rgba(22,217,180,.35);
  --glass:rgba(15,26,35,.62);
  --r-lg:18px;
  --r-md:12px;
  --r-sm:10px;
  --shadow:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px -24px rgba(0,0,0,.85);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(1100px 520px at 82% -8%, rgba(22,217,180,.10), transparent 62%),
    radial-gradient(760px 420px at 8% 8%, rgba(91,140,255,.06), transparent 60%),
    var(--bg-0);
  color:var(--t-1);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.02em}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{
  outline:2px solid var(--c-1);outline-offset:2px;border-radius:6px;
}

/* ---------- 顶部命令栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
}
.site-header.is-scrolled{
  background:var(--glass);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--c-1-hi),var(--c-1) 55%,#0FA98C);
  box-shadow:0 0 0 1px rgba(22,217,180,.35), 0 10px 24px -12px rgba(22,217,180,.75);
}
.brand-mark svg{width:19px;height:19px}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:16px;font-weight:700;letter-spacing:-.01em}
.brand-sub{font-size:11px;font-weight:500;color:var(--t-3);letter-spacing:.06em}

.nav-main{display:flex;align-items:center;gap:2px;margin-left:6px;flex:1 1 auto}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:14px;font-weight:500;color:var(--t-2);white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--t-1);background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--t-1)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-1);border-radius:2px;box-shadow:0 0 10px rgba(22,217,180,.7);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.search-box{
  display:flex;align-items:center;gap:8px;width:262px;height:36px;padding:0 10px;
  border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--glass);backdrop-filter:blur(14px);
  color:var(--t-3);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:var(--line-hi);box-shadow:0 0 0 3px rgba(22,217,180,.12)}
.search-box svg{width:15px;height:15px;flex:0 0 auto;color:var(--t-3)}
.search-box input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:13.5px;color:var(--t-1);
}
.search-box input::placeholder{color:var(--t-3)}
.kbd{
  flex:0 0 auto;font-size:11px;color:var(--t-3);padding:2px 6px;border-radius:6px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.icon-btn{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--t-2);background:rgba(255,255,255,.02);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn svg{width:17px;height:17px}
.icon-btn:hover{color:var(--c-1);border-color:var(--line-hi);transform:translateY(-1px)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--r-md);
  font-size:14px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;transition:all .2s var(--ease);
}
.btn svg{width:15px;height:15px;flex:0 0 auto}
.btn-primary{
  background:var(--c-1);color:#04140F;
  box-shadow:0 0 0 1px rgba(22,217,180,.4), 0 10px 30px -10px rgba(22,217,180,.55);
}
.btn-primary:hover{
  background:var(--c-1-hi);transform:translateY(-1px);filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(22,217,180,.5), 0 14px 34px -6px rgba(22,217,180,.65);
}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-outline{border-color:var(--line);color:var(--t-1);background:rgba(255,255,255,.02)}
.btn-outline:hover{border-color:var(--line-hi);color:var(--c-1-hi);transform:translateY(-1px)}
.btn-ghost{height:auto;padding:0;color:var(--t-2);font-weight:500}
.btn-ghost:hover{color:var(--c-1-hi)}
.btn-ghost svg{transition:transform .2s var(--ease)}
.btn-ghost:hover svg{transform:translateX(3px)}
.btn-sm{height:36px;padding:0 16px;font-size:13.5px}
.btn-lg{height:48px;padding:0 26px;font-size:15px}

.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);
  place-items:center;color:var(--t-1);background:rgba(255,255,255,.02);
}
.menu-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform .25s var(--ease),opacity .2s var(--ease)}
.menu-toggle span+span{margin-top:5px}
.menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:60;background:var(--bg-1);
  padding:18px;display:flex;flex-direction:column;gap:18px;
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:44px}
.drawer-nav{display:flex;flex-direction:column;margin-top:6px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:17px;color:var(--t-2);border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--c-1-hi)}
.drawer-foot{margin-top:auto;padding-bottom:8px}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding-top:20px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--t-3)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"";width:1px;height:12px;background:var(--line);display:inline-block}
.breadcrumb a:hover{color:var(--c-1-hi)}
.breadcrumb .current{color:var(--t-2)}

/* ---------- 页头横幅 ---------- */
.page-hero{
  position:relative;margin-top:20px;min-height:240px;display:flex;align-items:flex-end;
  border-radius:20px;overflow:hidden;border:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,9,15,.66),rgba(5,9,15,.95));
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--c-1),transparent);
  opacity:.85;
}
.page-hero-inner{position:relative;z-index:1;padding:36px 40px 34px;max-width:820px}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;height:24px;padding:0 12px;border-radius:9999px;
  font-size:12px;letter-spacing:.04em;color:var(--c-1-hi);
  background:var(--c-1-dim);border:1px solid var(--line-hi);
}
.hero-title{font-size:42px;line-height:1.18;margin-top:16px;letter-spacing:-.02em}
.hero-sub{margin-top:14px;font-size:17px;line-height:1.8;color:var(--t-2)}

/* ---------- 分类标签条 ---------- */
.tabs-wrap{margin-top:24px;position:relative}
.tabs-scroll{
  display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.tabs-scroll::-webkit-scrollbar{display:none}
.tab-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:9999px;
  font-size:13.5px;color:var(--t-2);border:1px solid var(--line);background:rgba(255,255,255,.02);
  transition:all .2s var(--ease);
}
.tab-chip:hover{color:var(--t-1);border-color:var(--line-hi);transform:translateY(-1px)}
.tab-chip.is-current{
  background:var(--c-1);color:#04140F;border-color:transparent;font-weight:600;
  box-shadow:0 0 0 1px rgba(22,217,180,.4), 0 10px 26px -12px rgba(22,217,180,.7);
}

/* ---------- 板块 ---------- */
.section{padding:96px 0;border-top:1px solid var(--line);margin-top:64px}
.section.alt{background:var(--bg-1)}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.1em;
  color:var(--c-1);text-transform:uppercase;margin-bottom:12px;
}
.sec-kicker::before{content:"";width:22px;height:2px;background:var(--c-1);border-radius:2px}
.sec-title{font-size:32px;line-height:1.28}
.sec-desc{margin-top:14px;font-size:16px;color:var(--t-2);line-height:1.85}

/* ---------- 图文交替 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split+.split{margin-top:88px}
.split-text h3{font-size:24px;line-height:1.35}
.split-text .txt{margin-top:16px;font-size:16px;line-height:1.9;color:var(--t-2)}
.split-text .txt+.txt{margin-top:14px}
.split.reverse .split-text{order:2}
.split.reverse .split-media{order:1}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.check-item{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--t-1)}
.check-item::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:2px;
  background:var(--c-1);box-shadow:0 0 10px rgba(22,217,180,.7);
}
.split-media{position:relative}
.media-frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.media-frame img{width:100%;height:340px;object-fit:cover;transition:transform .4s var(--ease)}
.media-frame:hover img{transform:scale(1.03)}
.media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,9,15,.12),rgba(5,9,15,.45));
}
.stat-badge{
  position:absolute;left:-18px;bottom:22px;z-index:2;
  display:flex;align-items:center;gap:12px;padding:14px 18px;border-radius:var(--r-md);
  background:var(--glass);backdrop-filter:blur(18px);border:1px solid var(--line-hi);
  box-shadow:var(--shadow);
}
.stat-badge .big{font-size:24px;font-weight:800;color:var(--c-1-hi)}
.stat-badge .small{font-size:12.5px;color:var(--t-2);line-height:1.4}

/* ---------- 流程条 ---------- */
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.flow-step{
  position:relative;padding:26px 24px;border-radius:var(--r-lg);
  background:var(--bg-2);border:1px solid var(--line);box-shadow:var(--shadow);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.flow-step:hover{transform:translateY(-4px);border-color:var(--line-hi)}
.flow-num{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  font-size:15px;font-weight:700;color:var(--c-1-hi);
  border:1px solid var(--line-hi);background:var(--c-1-dim);
}
.flow-step h3{margin-top:18px;font-size:19px}
.flow-step p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--t-2)}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{
  padding:26px 24px;border-radius:var(--r-lg);border:1px solid var(--line);
  background:var(--glass);backdrop-filter:blur(14px);box-shadow:var(--shadow);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.scene-card:hover{transform:translateY(-4px);border-color:var(--line-hi)}
.scene-icon{
  width:44px;height:44px;border-radius:var(--r-md);display:grid;place-items:center;
  border:1px solid var(--line-hi);background:var(--c-1-dim);color:var(--c-1-hi);
}
.scene-icon svg{width:21px;height:21px}
.scene-card h3{margin-top:16px;font-size:18px}
.scene-card p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--t-2)}
.tag-row{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:9999px;
  font-size:11.5px;color:var(--c-1-hi);background:var(--c-1-dim);border:1px solid var(--line);
}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-aside h2{font-size:28px;line-height:1.3}
.faq-aside p{margin-top:14px;font-size:15px;color:var(--t-2);line-height:1.85}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:14px 4px;font-size:17px;font-weight:600;cursor:pointer;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-1-hi)}
.faq-item[open] summary{color:var(--c-1-hi)}
.faq-plus{
  flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform .25s var(--ease);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
}
.faq-plus::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-plus::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-item[open] .faq-plus{transform:rotate(45deg)}
.faq-answer{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--t-2);max-width:760px}

/* ---------- CTA 条 ---------- */
.cta-bar{
  margin-top:64px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:28px 32px;border-radius:20px;border:1px solid var(--line-hi);
  background:linear-gradient(120deg,rgba(22,217,180,.14),rgba(15,26,35,.72));
  backdrop-filter:blur(16px);
  box-shadow:0 0 0 1px rgba(22,217,180,.18), 0 22px 46px -26px rgba(22,217,180,.5);
}
.cta-bar h2{font-size:22px;line-height:1.4}
.cta-bar p{margin-top:8px;font-size:14.5px;color:var(--t-2)}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;border-top:1px solid var(--line);background:var(--bg-1);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-note{margin-top:16px;font-size:14px;color:var(--t-2);line-height:1.8;max-width:320px}
.social-row{display:flex;gap:10px;margin-top:20px}
.social-btn{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--t-2);background:rgba(255,255,255,.02);
  transition:all .2s var(--ease);
}
.social-btn svg{width:16px;height:16px}
.social-btn:hover{color:var(--c-1);border-color:var(--line-hi);transform:translateY(-2px)}
.footer-title{font-size:15px;font-weight:700;margin-bottom:18px}
.footer-list{display:flex;flex-direction:column;gap:12px}
.footer-list a{font-size:14px;color:var(--t-2)}
.footer-list a:hover{color:var(--c-1-hi)}
.footer-contact{border-left:2px solid var(--c-1);padding-left:16px;display:flex;flex-direction:column;gap:12px}
.footer-contact div{font-size:14px;color:var(--t-2);line-height:1.7}
.footer-contact strong{display:block;color:var(--t-1);font-size:13px;font-weight:600;margin-bottom:2px}
.copyright{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--t-3);
}

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

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .search-box{width:210px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-main,.search-box{display:none}
  .menu-toggle{display:grid}
  .hero-title{font-size:34px}
  .split{gap:36px}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .flow{grid-template-columns:1fr 1fr}
  .scene-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:56px 0;margin-top:40px}
  .page-hero{min-height:180px;border-radius:16px}
  .page-hero-inner{padding:24px 20px}
  .hero-title{font-size:24px}
  .hero-sub{font-size:15px}
  .sec-title{font-size:24px}
  .split,.split.reverse{grid-template-columns:1fr;gap:26px}
  .split.reverse .split-text,.split.reverse .split-media{order:initial}
  .split+.split{margin-top:56px}
  .media-frame img{height:220px}
  .stat-badge{left:12px;bottom:12px;padding:10px 14px}
  .flow{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:22px 20px;border-radius:16px}
  .cta-bar .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer{padding:48px 0 22px;margin-top:64px}
  .copyright{justify-content:flex-start}
}

/* roulang page: category2 */
:root{
  --bg-0:#05090F;
  --bg-1:#0A131B;
  --bg-2:#0F1A23;
  --bg-inset:rgba(0,0,0,.28);
  --c-1:#16D9B4;
  --c-1-hi:#3BF0CE;
  --c-1-dim:rgba(22,217,180,.14);
  --c-2:#FF7A2F;
  --c-3:#5B8CFF;
  --ok:#31D07A;
  --warn:#FFB020;
  --danger:#FF5D5D;
  --t-1:#E9F2F6;
  --t-2:#9AAEBC;
  --t-3:#647887;
  --line:rgba(255,255,255,.08);
  --line-hi:rgba(22,217,180,.35);
  --glass:rgba(15,26,35,.62);
  --r-lg:18px;
  --r-md:12px;
  --r-sm:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px -24px rgba(0,0,0,.85);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease),border-color 200ms var(--ease),background-color 200ms var(--ease);}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-1);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-title{font-size:32px;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
.section-note{font-size:13px;line-height:1.5;color:var(--t-3);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;color:var(--c-1);
  background:var(--c-1-dim);border:1px solid var(--line-hi);
  border-radius:9999px;padding:4px 12px;margin-bottom:16px;
}
.lede{color:var(--t-2);font-size:16px;line-height:1.8;max-width:780px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.02em;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color 200ms var(--ease),border-color 200ms var(--ease),backdrop-filter 200ms var(--ease);
}
.site-header.is-scrolled{
  background:var(--glass);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:8px;flex-shrink:0;
  background:linear-gradient(135deg,var(--c-1-hi),#0FA98C);
  display:grid;place-items:center;
  box-shadow:0 0 0 1px rgba(22,217,180,.35),0 8px 22px -12px rgba(22,217,180,.75);
}
.brand-mark svg{width:18px;height:18px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.01em;}
.brand-sub{font-size:11px;color:var(--t-3);letter-spacing:.06em;font-weight:500;}
.nav-main{display:flex;align-items:center;gap:2px;margin-left:8px;flex:1;min-width:0;}
.nav-link{
  position:relative;font-size:13.5px;font-weight:500;color:var(--t-2);
  padding:8px 11px;border-radius:8px;white-space:nowrap;
}
.nav-link:hover{color:var(--t-1);background:rgba(255,255,255,.06);}
.nav-link.is-active{color:var(--t-1);}
.nav-link.is-active::after{
  content:"";position:absolute;left:11px;right:11px;bottom:0;height:2px;
  background:var(--c-1);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:36px;padding:0 10px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:var(--r-sm);
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),background-color 200ms var(--ease);
}
.command-search:focus-within{
  border-color:var(--line-hi);
  box-shadow:0 0 0 3px rgba(22,217,180,.14);
  background:rgba(255,255,255,.06);
}
.command-search svg{width:15px;height:15px;color:var(--t-3);flex-shrink:0;}
.command-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  font-size:13px;color:var(--t-1);
}
.command-search input::placeholder{color:var(--t-3);}
.kbd{
  font-size:11px;color:var(--t-3);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;line-height:1.5;flex-shrink:0;
}
.icon-btn{
  width:36px;height:36px;border-radius:9999px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--t-2);
}
.icon-btn:hover{color:var(--t-1);border-color:var(--line-hi);background:rgba(255,255,255,.05);}
.icon-btn svg{width:17px;height:17px;}
.menu-toggle{
  display:none;width:36px;height:36px;border:1px solid var(--line);
  border-radius:var(--r-sm);position:relative;
}
.menu-toggle span{
  position:absolute;left:9px;right:9px;height:2px;background:var(--t-1);border-radius:2px;
  transition:transform 240ms var(--ease),opacity 200ms var(--ease),top 240ms var(--ease);
}
.menu-toggle span:nth-child(1){top:12px;}
.menu-toggle span:nth-child(2){top:21px;}
.menu-toggle[aria-expanded="true"] span:nth-child(1){top:16.5px;transform:rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:nth-child(2){top:16.5px;transform:rotate(-45deg);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-md);font-weight:600;letter-spacing:.01em;
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),background-color 200ms var(--ease),border-color 200ms var(--ease),color 200ms var(--ease);
  white-space:nowrap;cursor:pointer;
}
.btn-sm{height:36px;padding:0 18px;font-size:14px;}
.btn-md{height:40px;padding:0 22px;font-size:15px;}
.btn-lg{height:48px;padding:0 28px;font-size:15.5px;}
.btn-primary{
  background:var(--c-1);color:#04140F;
  box-shadow:0 0 0 1px rgba(22,217,180,.4),0 10px 30px -10px rgba(22,217,180,.55);
}
.btn-primary:hover{
  background:var(--c-1-hi);transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(22,217,180,.5),0 14px 34px -6px rgba(22,217,180,.6);
}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-outline{
  border:1px solid rgba(255,255,255,.18);color:var(--t-1);background:transparent;
}
.btn-outline:hover{border-color:var(--line-hi);background:rgba(255,255,255,.05);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0) scale(.99);}
.btn-text{color:var(--c-1);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;}
.btn-text svg{width:15px;height:15px;transition:transform 200ms var(--ease);}
.btn-text:hover svg{transform:translateX(3px);}
.btn-block{width:100%;}
.arrow-left:hover svg{transform:translateX(-3px);}

/* ---------- Breadcrumb ---------- */
.crumb-bar{padding-top:20px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--t-3);}
.crumb li{display:flex;align-items:center;gap:10px;}
.crumb li+li::before{content:"";width:1px;height:12px;background:var(--line);display:inline-block;}
.crumb a:hover{color:var(--c-1);}
.crumb [aria-current="page"]{color:var(--t-2);}

/* ---------- Page banner ---------- */
.page-banner{
  position:relative;margin-top:20px;border-radius:20px;overflow:hidden;
  min-height:240px;display:flex;align-items:flex-end;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border:1px solid var(--line);
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(5,9,15,.95) 0%,rgba(5,9,15,.82) 48%,rgba(5,9,15,.55) 100%);
}
.page-banner-inner{position:relative;z-index:2;padding:36px 36px 32px;width:100%;}
.page-banner h1{
  font-size:36px;line-height:1.2;font-weight:700;letter-spacing:-.02em;
  max-width:820px;
}
.page-banner p{margin-top:12px;color:var(--t-2);font-size:16px;max-width:680px;}
.banner-line{
  height:1px;margin-top:24px;
  background:linear-gradient(90deg,var(--c-1),rgba(22,217,180,.18),transparent);
}

/* ---------- Filter chips ---------- */
.chip-bar{
  display:flex;gap:10px;overflow-x:auto;padding:22px 0 4px;
  scrollbar-width:none;
}
.chip-bar::-webkit-scrollbar{display:none;}
.chip{
  flex-shrink:0;height:34px;display:inline-flex;align-items:center;
  padding:0 16px;border-radius:9999px;font-size:13.5px;font-weight:500;
  border:1px solid var(--line);color:var(--t-2);background:transparent;
}
.chip:hover{color:var(--t-1);border-color:var(--line-hi);}
.chip.is-active{background:var(--c-1);border-color:var(--c-1);color:#04140F;font-weight:600;}

/* ---------- Metric cards ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.metric-card{
  position:relative;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:24px;box-shadow:var(--shadow-card);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease);
}
.metric-card::before{
  content:"";position:absolute;top:0;left:24px;width:28px;height:3px;
  background:var(--c-1);border-radius:0 0 3px 3px;
}
.metric-card:hover{transform:translateY(-4px);border-color:var(--line-hi);}
.metric-value{
  font-size:26px;font-weight:800;margin-top:14px;color:var(--t-1);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.3;
}
.metric-label{margin-top:8px;font-size:14px;color:var(--t-2);}
.metric-foot{margin-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  border-radius:9999px;font-size:11.5px;font-weight:600;letter-spacing:.02em;
}
.badge-soft{background:var(--c-1-dim);color:var(--c-1);border:1px solid var(--line-hi);}
.badge-warm{background:rgba(255,122,47,.14);color:var(--c-2);border:1px solid rgba(255,122,47,.3);}
.badge-ok{background:rgba(49,208,122,.14);color:var(--ok);border:1px solid rgba(49,208,122,.3);}
.metric-meta{font-size:12px;color:var(--t-3);}

/* ---------- Field rows card ---------- */
.field-card{
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:8px 28px;box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.field-card::before{
  content:"";position:absolute;top:0;left:0;height:1px;width:40%;
  background:linear-gradient(90deg,transparent,rgba(22,217,180,.45),transparent);
}
.field-row{
  display:grid;grid-template-columns:5fr 7fr;gap:24px;
  padding:20px 0;border-bottom:1px solid var(--line);
}
.field-row:last-child{border-bottom:0;}
.field-name{font-size:14px;color:var(--t-2);display:flex;align-items:center;gap:10px;}
.field-name::before{
  content:"";width:6px;height:6px;background:var(--c-1);border-radius:2px;flex-shrink:0;
}
.field-value{font-size:16px;color:var(--t-1);}
.field-value .mono{font-variant-numeric:tabular-nums;color:var(--c-1);}

/* ---------- Compare grid ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px;grid-column:span 2;}
.compare-card{
  border-radius:var(--r-lg);padding:22px;border:1px solid var(--line);
  background:var(--bg-2);transition:transform 200ms var(--ease),border-color 200ms var(--ease);
}
.compare-card:hover{transform:translateY(-4px);}
.compare-card.plain .compare-title{color:var(--t-2);}
.compare-card.accent{
  background:var(--glass);border-color:var(--line-hi);
  box-shadow:0 0 0 1px rgba(22,217,180,.16),0 18px 40px -26px rgba(22,217,180,.6);
}
.compare-card.accent:hover{border-color:var(--c-1);}
.compare-tag{font-size:11.5px;letter-spacing:.06em;color:var(--t-3);}
.compare-card.accent .compare-tag{color:var(--c-1);}
.compare-title{font-size:17px;font-weight:600;margin-top:10px;}
.compare-list{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
.compare-list li{font-size:14px;color:var(--t-2);display:flex;gap:10px;line-height:1.7;}
.compare-list li::before{
  content:"";width:5px;height:5px;border-radius:50%;background:var(--t-3);
  margin-top:9px;flex-shrink:0;
}
.compare-card.accent .compare-list li{color:var(--t-1);}
.compare-card.accent .compare-list li::before{background:var(--c-1);}

/* ---------- Scene block ---------- */
.scene-grid{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;}
.scene-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  position:relative;box-shadow:var(--shadow-card);
}
.scene-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;border-radius:14px;}
.scene-float{
  position:absolute;right:16px;bottom:16px;
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line-hi);border-radius:14px;padding:12px 16px;
}
.scene-float strong{display:block;font-size:18px;font-weight:800;color:var(--c-1);font-variant-numeric:tabular-nums;}
.scene-float span{font-size:12px;color:var(--t-2);}
.check-list{margin-top:24px;display:flex;flex-direction:column;gap:14px;}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--t-2);line-height:1.75;}
.check-list li::before{
  content:"";width:16px;height:16px;border-radius:5px;flex-shrink:0;margin-top:6px;
  background:var(--c-1-dim);border:1px solid var(--line-hi);
  box-shadow:inset 0 0 0 3px rgba(5,9,15,0);
  background-image:linear-gradient(135deg,var(--c-1),var(--c-1-hi));
  opacity:.9;
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-side{position:sticky;top:96px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:16px 0 16px 12px;text-align:left;
  font-size:17px;font-weight:600;color:var(--t-1);position:relative;
  transition:color 200ms var(--ease),background-color 200ms var(--ease);
}
.faq-q:hover{color:var(--c-1);}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;
  background:var(--c-1);border-radius:2px;
}
.faq-icon{
  width:20px;height:20px;flex-shrink:0;position:relative;
  transition:transform 240ms var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-1);border-radius:2px;
  left:50%;top:50%;
}
.faq-icon::before{width:14px;height:2px;transform:translate(-50%,-50%);}
.faq-icon::after{width:2px;height:14px;transform:translate(-50%,-50%);transition:opacity 200ms var(--ease);}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 300ms var(--ease),opacity 240ms var(--ease);
  opacity:0;
}
.faq-item.is-open .faq-a{opacity:1;}
.faq-a-inner{padding:0 44px 20px 12px;font-size:15px;line-height:1.8;color:var(--t-2);}

/* ---------- CTA bar ---------- */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line-hi);border-radius:20px;
  padding:28px 32px;
  box-shadow:0 0 0 1px rgba(22,217,180,.12),0 24px 60px -34px rgba(22,217,180,.65);
}
.cta-bar h2{font-size:24px;line-height:1.35;font-weight:700;}
.cta-bar p{font-size:14px;color:var(--t-2);margin-top:8px;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--bg-1);border-top:1px solid var(--line);
  padding:64px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-note{font-size:14px;color:var(--t-2);max-width:280px;line-height:1.8;}
.brand-mark.sm{width:30px;height:30px;}
.footer-title{font-size:15px;font-weight:600;color:var(--t-1);margin-bottom:18px;}
.footer-list{display:flex;flex-direction:column;gap:12px;}
.footer-list a{font-size:14px;color:var(--t-2);}
.footer-list a:hover{color:var(--c-1);}
.contact-list{display:flex;flex-direction:column;gap:14px;border-left:2px solid var(--c-1);padding-left:16px;}
.contact-list li{font-size:14px;color:var(--t-2);line-height:1.7;}
.contact-list strong{color:var(--t-1);font-weight:600;}
.social-row{display:flex;gap:10px;margin-top:20px;}
.social-btn{
  width:36px;height:36px;border-radius:9999px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--t-2);
}
.social-btn:hover{color:var(--c-1);border-color:var(--line-hi);background:rgba(255,255,255,.05);}
.social-btn svg{width:17px;height:17px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);
  padding:20px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--t-3);
}
.footer-bottom a:hover{color:var(--c-1);}

/* ---------- Drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--bg-1);
  display:none;flex-direction:column;
  transform:translateY(-8px);opacity:0;
  transition:opacity 220ms var(--ease),transform 220ms var(--ease);
}
.drawer.is-open{display:flex;opacity:1;transform:translateY(0);}
.drawer-top{padding:16px 18px;border-bottom:1px solid var(--line);}
.drawer .command-search{width:100%;}
.drawer-nav{padding:12px 18px;flex:1;overflow-y:auto;display:flex;flex-direction:column;}
.drawer-link{
  display:flex;align-items:center;min-height:56px;font-size:17px;color:var(--t-2);
  border-bottom:1px solid var(--line);
}
.drawer-link:hover{color:var(--t-1);}
.drawer-link.is-active{color:var(--c-1);}
.drawer-foot{padding:16px 18px 28px;border-top:1px solid var(--line);}

/* ---------- Responsive ---------- */
@media (min-width:1280px){
  .command-search{width:260px;}
}
@media (max-width:1180px){
  .nav-link{font-size:13px;padding:8px 8px;}
  .nav-link.is-active::after{left:8px;right:8px;}
  .command-search{width:180px;}
}
@media (max-width:1023px){
  .nav-main,.nav-right .command-search,.nav-right .icon-btn,.nav-right .btn{display:none;}
  .menu-toggle{display:block;}
  .nav-wrap{justify-content:space-between;}
  .scene-grid{grid-template-columns:1fr;gap:32px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-title{font-size:24px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px;}
  .page-banner{min-height:180px;border-radius:16px;}
  .page-banner-inner{padding:22px 20px 20px;}
  .page-banner h1{font-size:24px;}
  .page-banner p{font-size:14.5px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .metric-card{padding:18px;}
  .metric-value{font-size:20px;}
  .field-card{padding:4px 18px;}
  .field-row{grid-template-columns:1fr;gap:6px;padding:16px 0;}
  .compare-grid{grid-template-columns:1fr;gap:18px;}
  .compare-pair{grid-template-columns:1fr;gap:14px;grid-column:span 1;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:22px 20px;}
  .cta-bar h2{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .faq-q{font-size:16px;}
  .faq-a-inner{padding-right:16px;}
}
@media (max-width:520px){
  .metric-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
    --bg-0:#05090F;
    --bg-1:#0A131B;
    --bg-2:#0F1A23;
    --bg-inset:rgba(0,0,0,.28);
    --c-1:#16D9B4;
    --c-1-hi:#3BF0CE;
    --c-1-dim:rgba(22,217,180,.14);
    --c-2:#FF7A2F;
    --c-3:#5B8CFF;
    --ok:#31D07A;
    --warn:#FFB020;
    --danger:#FF5D5D;
    --t-1:#E9F2F6;
    --t-2:#9AAEBC;
    --t-3:#647887;
    --line:rgba(255,255,255,.08);
    --line-hi:rgba(22,217,180,.35);
    --glass:rgba(15,26,35,.62);
    --r-card:18px;
    --r-sm:12px;
    --r-img:14px;
    --shadow:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px -24px rgba(0,0,0,.85);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{ box-sizing:border-box; }
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--t-1);
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{ display:block; max-width:100%; }
  a{ color:inherit; text-decoration:none; }
  button{ font:inherit; cursor:pointer; }
  input,select,textarea{ font:inherit; }
  ul,ol{ list-style:none; margin:0; padding:0; }
  h1,h2,h3,h4,p{ margin:0; }

  body .container{
    width:100%;
    max-width:1280px;
    margin:0 auto;
    padding-left:32px;
    padding-right:32px;
  }
  @media (max-width:1023px){ body .container{ padding-left:24px; padding-right:24px; } }
  @media (max-width:639px){ body .container{ padding-left:18px; padding-right:18px; } }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible,
  select:focus-visible{
    outline:2px solid var(--c-1);
    outline-offset:2px;
    border-radius:6px;
  }

  .num{ font-variant-numeric:tabular-nums; letter-spacing:-.02em; }

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky; top:0; z-index:60;
    background:transparent;
    border-bottom:1px solid transparent;
    transition:background .2s var(--ease), border-color .2s var(--ease), backdrop-filter .2s var(--ease);
  }
  .site-header.is-scrolled{
    background:var(--glass);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-bottom-color:var(--line);
  }
  .header-inner{ display:flex; align-items:center; gap:20px; height:64px; }

  .brand{ display:flex; align-items:center; gap:10px; flex-shrink:0; }
  .brand-mark{
    width:30px; height:30px; border-radius:8px;
    background:linear-gradient(135deg,var(--c-1),#0EA98D);
    display:grid; place-items:center;
    box-shadow:0 0 0 1px rgba(22,217,180,.35), 0 8px 20px -12px rgba(22,217,180,.9);
  }
  .brand-mark svg{ width:17px; height:17px; }
  .brand-text{ display:flex; flex-direction:column; line-height:1.15; }
  .brand-name{ font-size:16px; font-weight:700; letter-spacing:-.01em; }
  .brand-sub{ font-size:11px; font-weight:500; color:var(--t-3); letter-spacing:.06em; }

  .nav-main{ display:flex; align-items:center; gap:2px; margin-left:10px; }
  .nav-link{
    position:relative;
    padding:8px 12px;
    border-radius:8px;
    font-size:14px; font-weight:500;
    color:var(--t-2);
    transition:color .2s var(--ease), background-color .2s var(--ease);
    white-space:nowrap;
  }
  .nav-link:hover{ color:var(--t-1); background:rgba(255,255,255,.06); }
  .nav-link.is-active{ color:var(--t-1); }
  .nav-link.is-active::after{
    content:""; position:absolute; left:12px; right:12px; bottom:2px;
    height:2px; border-radius:2px; background:var(--c-1);
  }

  .header-right{ margin-left:auto; display:flex; align-items:center; gap:10px; }

  .search-box{
    display:flex; align-items:center; gap:8px;
    width:262px; height:36px; padding:0 10px;
    background:var(--bg-inset);
    border:1px solid var(--line);
    border-radius:10px;
    transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
  }
  .search-box:focus-within{ border-color:var(--line-hi); box-shadow:0 0 0 3px rgba(22,217,180,.12); }
  .search-box svg{ width:15px; height:15px; color:var(--t-3); flex:0 0 auto; }
  .search-box input{
    flex:1 1 auto; min-width:0; height:100%;
    background:transparent; border:0; outline:none;
    font-size:13px; color:var(--t-1);
  }
  .search-box input::placeholder{ color:var(--t-3); }
  .kbd{
    flex:0 0 auto; font-size:11px; color:var(--t-3);
    border:1px solid var(--line); border-radius:5px; padding:1px 5px; line-height:1.4;
  }

  .icon-btn{
    width:36px; height:36px; border-radius:9999px;
    border:1px solid var(--line); background:var(--bg-inset);
    display:grid; place-items:center; color:var(--t-2);
    transition:color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
  }
  .icon-btn:hover{ color:var(--c-1); border-color:var(--line-hi); transform:translateY(-1px); }
  .icon-btn svg{ width:16px; height:16px; }

  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    border-radius:12px; border:1px solid transparent;
    height:40px; padding:0 22px;
    font-size:14px; font-weight:600;
    transition:all .2s var(--ease);
    white-space:nowrap;
  }
  .btn-primary{
    background:var(--c-1); color:#04140F;
    box-shadow:0 0 0 1px rgba(22,217,180,.4), 0 10px 30px -10px rgba(22,217,180,.55);
  }
  .btn-primary:hover{
    background:var(--c-1-hi);
    transform:translateY(-1px);
    box-shadow:0 0 0 1px rgba(22,217,180,.55), 0 16px 36px -12px rgba(22,217,180,.75);
  }
  .btn-primary:active{ transform:translateY(0) scale(.99); }
  .btn-ghost{ background:transparent; border-color:rgba(255,255,255,.16); color:var(--t-1); }
  .btn-ghost:hover{ border-color:var(--line-hi); background:rgba(255,255,255,.04); transform:translateY(-1px); }
  .btn-sm{ height:36px; padding:0 18px; font-size:13px; }
  .btn-lg{ height:48px; padding:0 28px; font-size:15px; }
  .btn .arrow{ transition:transform .2s var(--ease); }
  .btn:hover .arrow{ transform:translateX(3px); }

  .burger{
    display:none; position:relative;
    width:40px; height:40px; border-radius:10px;
    border:1px solid var(--line); background:var(--bg-inset);
  }
  .burger span{
    position:absolute; left:11px; width:18px; height:2px;
    background:var(--t-1); border-radius:2px;
    transition:transform .25s var(--ease), opacity .2s var(--ease);
  }
  .burger span:nth-child(1){ top:14px; }
  .burger span:nth-child(2){ top:19px; }
  .burger span:nth-child(3){ top:24px; }
  .burger.is-open span:nth-child(1){ transform:translateY(5px) rotate(45deg); }
  .burger.is-open span:nth-child(2){ opacity:0; }
  .burger.is-open span:nth-child(3){ transform:translateY(-5px) rotate(-45deg); }

  .drawer{
    display:none;
    position:fixed; left:0; right:0; top:64px; bottom:0; z-index:55;
    background:var(--bg-1);
    padding:20px 24px 32px;
    overflow-y:auto;
    border-top:1px solid var(--line);
  }
  .drawer.is-open{ display:block; }
  .drawer .search-box{ display:flex; width:100%; height:44px; margin-bottom:18px; }
  .drawer-links a{
    display:flex; align-items:center; justify-content:space-between;
    height:56px; font-size:17px; font-weight:500; color:var(--t-1);
    border-bottom:1px solid var(--line);
    transition:color .2s var(--ease), padding-left .2s var(--ease);
  }
  .drawer-links a:hover{ color:var(--c-1); padding-left:4px; }
  .drawer-cta{ margin-top:24px; }
  .drawer-cta .btn{ width:100%; }

  @media (max-width:1023px){
    .nav-main{ display:none; }
    .search-box{ display:none; }
    .header-right .icon-btn{ display:none; }
    .header-right .btn-primary{ display:none; }
    .burger{ display:block; }
  }

  /* ============ 面包屑 ============ */
  .crumbs{ padding-top:20px; }
  .crumbs ol{ display:flex; flex-wrap:wrap; align-items:center; gap:8px; font-size:14px; color:var(--t-3); }
  .crumbs li{ display:flex; align-items:center; gap:8px; }
  .crumbs li + li::before{ content:""; width:1px; height:12px; background:var(--line); display:inline-block; }
  .crumbs a{ transition:color .2s var(--ease); }
  .crumbs a:hover{ color:var(--c-1); }
  .crumbs [aria-current="page"]{ color:var(--t-2); }

  /* ============ 页头横幅 ============ */
  .page-hero{
    position:relative;
    margin-top:16px;
    min-height:240px;
    display:flex; align-items:center;
    padding:52px 0 48px;
    background:
      linear-gradient(90deg, rgba(5,9,15,.95) 0%, rgba(5,9,15,.78) 55%, rgba(5,9,15,.62) 100%),
      url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    border-radius:20px;
    overflow:hidden;
    border:1px solid var(--line);
  }
  .page-hero::after{
    content:""; position:absolute; left:0; right:0; bottom:0; height:1px;
    background:linear-gradient(90deg, transparent, var(--c-1), transparent);
  }
  .hero-eyebrow{
    display:inline-flex; align-items:center; gap:8px;
    font-size:12px; font-weight:600; letter-spacing:.14em;
    color:var(--c-1); text-transform:uppercase;
    margin-bottom:16px;
  }
  .hero-eyebrow::before{ content:""; width:22px; height:2px; background:var(--c-1); border-radius:2px; }
  .page-hero h1{
    font-size:48px; line-height:1.15; font-weight:700; letter-spacing:-.02em;
    max-width:820px;
  }
  .page-hero .hero-sub{
    margin-top:16px; max-width:660px;
    font-size:16px; line-height:1.8; color:var(--t-2);
  }

  /* ============ 分类标签条 ============ */
  .filter-bar{
    display:flex; gap:10px; overflow-x:auto;
    padding:24px 0 0;
    scrollbar-width:none;
  }
  .filter-bar::-webkit-scrollbar{ display:none; }
  .chip{
    flex:0 0 auto;
    display:inline-flex; align-items:center;
    height:34px; padding:0 16px;
    border-radius:9999px;
    border:1px solid var(--line);
    font-size:13px; color:var(--t-2);
    transition:color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
  }
  .chip:hover{ color:var(--t-1); border-color:var(--line-hi); }
  .chip.is-active{
    background:var(--c-1); color:#04140F; border-color:var(--c-1); font-weight:600;
  }

  /* ============ 板块通用 ============ */
  .section{ padding:96px 0; }
  .section--alt{ background:var(--bg-1); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
  @media (max-width:639px){ .section{ padding:56px 0; } }

  .sec-head{ margin-bottom:40px; }
  .sec-head.split{
    display:flex; align-items:flex-end; justify-content:space-between; gap:32px; flex-wrap:wrap;
  }
  .sec-title{
    font-size:32px; line-height:1.25; font-weight:700; letter-spacing:-.02em;
    max-width:760px;
  }
  .sec-desc{ margin-top:14px; font-size:15px; line-height:1.75; color:var(--t-2); max-width:680px; }
  .sec-meta{ font-size:13px; color:var(--t-3); }
  @media (max-width:639px){
    .sec-title{ font-size:24px; }
    .sec-head{ margin-bottom:28px; }
  }

  /* ============ 时间轴 ============ */
  .timeline{ position:relative; padding-left:36px; }
  .timeline::before{
    content:""; position:absolute; left:7px; top:10px; bottom:10px; width:2px;
    background:linear-gradient(180deg, var(--c-1), rgba(22,217,180,.06));
    border-radius:2px;
  }
  .tl-item{ position:relative; padding-bottom:30px; }
  .tl-item:last-child{ padding-bottom:0; }
  .tl-item::before{
    content:""; position:absolute; left:-36px; top:8px;
    width:16px; height:16px; border-radius:50%;
    background:var(--c-1);
    box-shadow:0 0 0 4px rgba(22,217,180,.14), 0 0 16px rgba(22,217,180,.55);
  }
  .tl-card{
    background:var(--bg-2);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow);
    padding:22px 24px;
    transition:transform .2s var(--ease), border-color .2s var(--ease);
  }
  .tl-card:hover{ transform:translateY(-4px); border-color:var(--line-hi); }
  .tl-head{ display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin-bottom:10px; }
  .tl-step{ font-size:12px; font-weight:700; letter-spacing:.08em; color:var(--c-1); }
  .tl-card h3{ font-size:20px; line-height:1.4; font-weight:600; }
  .tl-card p{ font-size:15px; line-height:1.75; color:var(--t-2); }
  .badge{
    display:inline-flex; align-items:center; height:22px; padding:0 10px;
    border-radius:9999px; font-size:11px; font-weight:600; letter-spacing:.02em;
  }
  .badge-mint{ background:var(--c-1-dim); color:var(--c-1); }
  .badge-warm{ background:rgba(255,122,47,.14); color:var(--c-2); }
  .badge-line{ border:1px solid var(--line); color:var(--t-3); }

  @media (max-width:639px){
    .timeline{ padding-left:26px; }
    .tl-item::before{ left:-26px; width:14px; height:14px; top:9px; }
    .tl-card{ padding:18px 18px; }
  }

  /* ============ 清单区 ============ */
  .check-layout{ display:grid; grid-template-columns:5fr 7fr; gap:32px; align-items:start; }
  .figure-card{
    border-radius:var(--r-card); overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow);
    position:relative;
  }
  .figure-card img{ width:100%; height:100%; max-height:420px; object-fit:cover; }
  .figure-metric{
    position:absolute; left:18px; bottom:18px;
    background:var(--glass);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border:1px solid var(--line-hi);
    border-radius:14px;
    padding:12px 16px;
  }
  .figure-metric strong{ display:block; font-size:22px; font-weight:800; color:var(--c-1); }
  .figure-metric span{ font-size:12px; color:var(--t-2); }

  .check-panel{
    background:var(--glass);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border:1px solid var(--line);
    border-radius:24px;
    padding:28px;
    position:relative;
    overflow:hidden;
  }
  .check-panel::before{
    content:""; position:absolute; top:0; left:0; width:40%; height:1px;
    background:linear-gradient(90deg, transparent, rgba(22,217,180,.45), transparent);
  }
  .check-panel h3{ font-size:18px; font-weight:600; margin-bottom:6px; }
  .check-panel .panel-sub{ font-size:14px; color:var(--t-3); margin-bottom:22px; }
  .check-grid{ display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:12px; }
  .check-item{
    display:flex; gap:12px; align-items:flex-start;
    padding:14px 16px;
    border-radius:var(--r-sm);
    background:var(--bg-inset);
    border:1px solid var(--line);
    font-size:15px; line-height:1.6; color:var(--t-1);
    transition:transform .2s var(--ease), border-color .2s var(--ease);
  }
  .check-item::before{
    content:""; flex:0 0 auto; width:10px; height:10px; border-radius:3px;
    background:var(--c-1); margin-top:8px;
    box-shadow:0 0 12px rgba(22,217,180,.5);
  }
  .check-item:hover{ transform:translateY(-2px); border-color:var(--line-hi); }

  @media (max-width:1023px){
    .check-layout{ grid-template-columns:1fr; }
  }
  @media (max-width:639px){
    .check-grid{ grid-template-columns:1fr; }
    .check-panel{ padding:20px; border-radius:18px; }
  }

  /* ============ FAQ ============ */
  .faq-wrap{ max-width:960px; }
  .faq-list{ border-top:1px solid var(--line); }
  .faq-item{ position:relative; border-bottom:1px solid var(--line); }
  .faq-item.is-open::before{
    content:""; position:absolute; left:-14px; top:14px; bottom:14px; width:2px;
    background:var(--c-1); border-radius:2px;
  }
  .faq-q{
    width:100%; display:flex; align-items:center; justify-content:space-between; gap:20px;
    min-height:64px; padding:14px 4px;
    background:transparent; border:0; text-align:left;
    font-size:17px; font-weight:600; color:var(--t-1);
    transition:color .2s var(--ease);
  }
  .faq-q:hover{ color:var(--c-1-hi); }
  .faq-item.is-open .faq-q{ color:var(--c-1-hi); }
  .faq-icon{ position:relative; flex:0 0 auto; width:20px; height:20px; transition:transform .25s var(--ease); }
  .faq-icon::before,.faq-icon::after{
    content:""; position:absolute; background:var(--c-1); border-radius:2px;
  }
  .faq-icon::before{ left:0; right:0; top:9px; height:2px; }
  .faq-icon::after{ top:0; bottom:0; left:9px; width:2px; }
  .faq-item.is-open .faq-icon{ transform:rotate(45deg); }
  .faq-a{ height:0; overflow:hidden; transition:height .28s var(--ease); }
  .faq-a-inner{ padding:0 44px 22px 4px; font-size:15px; line-height:1.8; color:var(--t-2); }
  @media (max-width:639px){
    .faq-q{ font-size:16px; }
    .faq-a-inner{ padding-right:8px; }
    .faq-item.is-open::before{ left:-8px; }
  }

  /* ============ 支持入口 ============ */
  .support-grid{ display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:20px; }
  .support-card{
    background:var(--bg-2);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow);
    padding:24px;
    transition:transform .2s var(--ease), border-color .2s var(--ease);
  }
  .support-card:hover{ transform:translateY(-4px); border-color:var(--line-hi); }
  .support-icon{
    width:38px; height:38px; border-radius:12px;
    display:grid; place-items:center;
    border:1px solid var(--line-hi);
    background:var(--c-1-dim);
    color:var(--c-1);
    margin-bottom:16px;
  }
  .support-icon svg{ width:18px; height:18px; }
  .support-card h3{ font-size:18px; font-weight:600; margin-bottom:8px; }
  .support-card p{ font-size:15px; line-height:1.75; color:var(--t-2); }
  .support-card .support-meta{ margin-top:14px; font-size:13px; color:var(--t-3); }
  @media (max-width:1023px){ .support-grid{ grid-template-columns:1fr; } }

  /* ============ CTA 条 ============ */
  .cta-band{
    margin-top:48px;
    display:flex; align-items:center; justify-content:space-between; gap:28px;
    padding:32px 36px;
    border-radius:24px;
    background:linear-gradient(120deg, rgba(22,217,180,.14), rgba(15,26,35,.92) 60%);
    border:1px solid var(--line-hi);
    box-shadow:0 0 70px -34px rgba(22,217,180,.75);
  }
  .cta-band h2{ font-size:26px; line-height:1.3; font-weight:700; letter-spacing:-.01em; }
  .cta-band p{ margin-top:8px; font-size:15px; color:var(--t-2); }
  @media (max-width:767px){
    .cta-band{ flex-direction:column; align-items:flex-start; padding:24px; }
    .cta-band h2{ font-size:21px; }
  }

  /* ============ 页脚 ============ */
  .site-footer{ background:var(--bg-1); border-top:1px solid var(--line); padding-top:72px; }
  .footer-grid{ display:grid; grid-template-columns:1.5fr 1fr 1fr 1.3fr; gap:40px; }
  .footer-brand{ display:flex; align-items:center; gap:10px; }
  .footer-note{ margin-top:16px; max-width:290px; font-size:14px; line-height:1.75; color:var(--t-2); }
  .social-row{ display:flex; gap:10px; margin-top:20px; }
  .social-btn{
    width:36px; height:36px; border-radius:9999px;
    border:1px solid var(--line); display:grid; place-items:center;
    color:var(--t-2);
    transition:color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
  }
  .social-btn:hover{ color:var(--c-1); border-color:var(--line-hi); transform:translateY(-2px); }
  .social-btn svg{ width:16px; height:16px; }
  .footer-title{ font-size:15px; font-weight:600; color:var(--t-1); margin-bottom:18px; }
  .footer-list li + li{ margin-top:11px; }
  .footer-list a{ font-size:14px; color:var(--t-2); transition:color .2s var(--ease); }
  .footer-list a:hover{ color:var(--c-1); }
  .contact-list li{
    border-left:2px solid var(--c-1);
    padding-left:12px;
    font-size:14px; color:var(--t-2);
    margin-bottom:14px;
    line-height:1.7;
  }
  .contact-list li:last-child{ margin-bottom:0; }
  .contact-list strong{ display:block; font-size:13px; font-weight:600; color:var(--t-1); }
  .footer-bottom{
    margin-top:56px;
    border-top:1px solid var(--line);
    padding:22px 0;
    display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:14px;
    font-size:12px; color:var(--t-3);
  }
  .footer-bottom a{ transition:color .2s var(--ease); }
  .footer-bottom a:hover{ color:var(--c-1); }

  @media (max-width:1023px){
    .footer-grid{ grid-template-columns:repeat(2, minmax(0,1fr)); gap:32px; }
    .site-footer{ padding-top:56px; }
  }
  @media (max-width:639px){
    .footer-grid{ grid-template-columns:1fr; }
    .footer-bottom{ margin-top:36px; }
  }

  @media (max-width:1023px){
    .page-hero h1{ font-size:36px; }
  }
  @media (max-width:639px){
    .page-hero{ min-height:180px; padding:32px 0 30px; border-radius:16px; }
    .page-hero h1{ font-size:30px; line-height:1.25; }
    .page-hero .hero-sub{ font-size:15px; }
  }

  @media (prefers-reduced-motion: reduce){
    *{ animation:none !important; transition:none !important; scroll-behavior:auto !important; }
  }