:root{--bg:#080b12;--panel:#0f1520;--panel2:#161f2e;--panel3:#1d2a3c;--ink:#f6fbff;--muted:#aab6c8;--line:#2a394e;--bridge:#7cffb2;--cyan:#68e8ff;--blue:#6b8cff;--violet:#9e72ff;--orange:#ffbd6b;--red:#ff6678;--shadow:0 24px 80px rgba(104,232,255,.13);--max:1200px}
[data-theme=light]{--bg:#f5f8fb;--panel:#ffffff;--panel2:#eef4f9;--panel3:#e5edf6;--ink:#121827;--muted:#5f6b7b;--line:#d7e2ed;--bridge:#12894b;--cyan:#007d91;--blue:#315fd6;--violet:#6d48d7;--orange:#a66400;--red:#c83d4c;--shadow:0 24px 80px rgba(35,80,150,.12)}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Arial,sans-serif;background:radial-gradient(circle at 14% 8%,rgba(124,255,178,.15),transparent 27%),radial-gradient(circle at 84% 10%,rgba(104,232,255,.14),transparent 27%),linear-gradient(180deg,var(--bg),#0b111c);color:var(--ink);line-height:1.68;min-height:100vh}a{color:var(--cyan);text-decoration:none}a:hover{text-decoration:underline}.skip-link{position:absolute;left:-999px}.skip-link:focus{left:18px;top:14px;background:var(--panel);padding:10px;border:1px solid var(--line);z-index:20}.bridge-top{border-bottom:1px solid var(--line);background:rgba(8,11,18,.84);font-size:13px;color:var(--muted)}[data-theme=light] .bridge-top{background:rgba(255,255,255,.84)}.bridge-top-inner{max-width:var(--max);margin:auto;padding:8px 20px;display:flex;justify-content:space-between;gap:14px}.site-header{position:sticky;top:0;z-index:10;background:rgba(8,11,18,.86);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}[data-theme=light] .site-header{background:rgba(255,255,255,.88)}.nav-shell{max-width:var(--max);margin:auto;display:flex;align-items:center;gap:16px;padding:14px 20px}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:24px;font-weight:950}.bridge-mark{width:46px;height:46px;border-radius:15px;background:linear-gradient(135deg,var(--bridge),var(--cyan),var(--blue));display:grid;place-items:center;color:#041014;font-weight:1000;box-shadow:0 0 32px rgba(124,255,178,.25)}.site-nav{display:flex;gap:4px;justify-content:center;flex:1;flex-wrap:wrap}.site-nav a{color:var(--ink);font-weight:800;padding:10px 11px;border-radius:10px}.site-nav a:hover{background:var(--panel2);text-decoration:none}.cta{background:linear-gradient(135deg,var(--bridge),var(--cyan));color:#041014;padding:11px 15px;border-radius:10px;font-weight:950}.theme-toggle,.nav-toggle{border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:10px;padding:10px 12px;cursor:pointer}.nav-toggle{display:none}main{max-width:var(--max);margin:auto;padding:0 20px}.bridge-home{display:grid;grid-template-columns:310px 1fr;gap:24px;align-items:start;padding:44px 0}.route-sidebar{position:sticky;top:92px;background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow)}.route-chip{display:inline-block;border:1px solid var(--bridge);color:var(--bridge);border-radius:999px;padding:5px 10px;font-size:12px;font-weight:900;text-transform:uppercase}.route-sidebar h2{font-size:28px;line-height:1;margin:14px 0}.route-list{display:grid;gap:8px;margin-top:18px}.route-list 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20px;letter-spacing:-.055em}.bridge-text{background:linear-gradient(90deg,var(--bridge),var(--cyan),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}.hero-copy{font-size:18px;color:var(--muted);max-width:780px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.btn{display:inline-block;border-radius:12px;padding:13px 18px;font-weight:950}.btn-primary{background:linear-gradient(135deg,var(--bridge),var(--cyan));color:#041014}.btn-ghost{border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--ink)}.network-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}.network{background:var(--panel2);border:1px solid var(--line);border-radius:999px;padding:9px 12px;color:var(--muted)}.transfer-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:20px}.transfer-card{padding:24px}.transfer-card h3{font-size:30px;margin:8px 0}.bridge-form{display:grid;gap:12px;margin-top:16px}.chain-box{background:var(--panel2);border:1px solid var(--line);border-radius:18px;padding:16px}.chain-box span{display:block;color:var(--muted);font-size:13px}.chain-box strong{font-size:22px}.route-arrow{text-align:center;color:var(--bridge);font-size:24px}.check-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}.check-step{border-radius:18px;padding:16px;text-align:center;font-weight:1000;background:var(--panel2);border:1px solid var(--line)}.check-step b{display:block;color:var(--bridge)}.history-list{display:grid;gap:12px}.history-card{padding:18px;display:grid;grid-template-columns:1fr auto;gap:14px;align-items:center}.history-card strong{color:var(--ink)}.route-pill{background:var(--panel2);border:1px solid var(--line);border-radius:999px;padding:8px 10px;color:var(--green);font-weight:900}.section{padding:48px 0}.section-title{font-size:clamp(34px,5vw,56px);line-height:1;margin:0 0 20px}.rail-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.rail-tile{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:18px;color:var(--ink);display:block;box-shadow:var(--shadow)}.rail-tile span{display:block;color:var(--orange);font-weight:950;font-size:12px;text-transform:uppercase}.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.article-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.article-card,.news-card{padding:22px;display:block;color:var(--ink)}.tag{display:inline-block;border:1px solid var(--line);background:var(--panel2);border-radius:999px;padding:5px 10px;color:var(--cyan);font-size:12px;font-weight:950}.breadcrumbs{font-size:14px;color:var(--muted);margin:24px 0}.breadcrumbs a{color:var(--muted)}.page-hero{padding:44px;margin:30px 0}.page-hero h1{font-size:clamp(36px,6vw,66px);line-height:.98;margin:10px 0}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px}.article-body{padding:clamp(24px,4vw,46px)}.article-body h1{font-size:clamp(34px,5vw,60px);line-height:1}.article-body p{max-width:80ch}.toc{position:sticky;top:98px;padding:20px}.risk{border-left:5px solid var(--red);background:rgba(255,102,120,.1);padding:16px;border-radius:14px}.example{border-left:5px solid var(--cyan);background:rgba(104,232,255,.08);padding:16px;border-radius:14px}.independent{border:1px dashed var(--bridge);background:rgba(124,255,178,.08);padding:14px;border-radius:14px}.site-footer{max-width:var(--max);margin:70px auto 0;padding:40px 20px;border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}.site-footer a{display:block;margin:7px 0}@media(max-width:980px){.bridge-home,.transfer-grid,.article-layout{grid-template-columns:1fr}.route-sidebar,.toc{position:static}.rail-grid,.news-grid,.article-grid,.footer-grid{grid-template-columns:repeat(2,1fr)}.site-nav{display:none;position:absolute;left:18px;right:18px;top:72px;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:12px}.site-nav.open{display:grid}.nav-toggle{display:block}.nav-shell{position:relative}.cta{display:none}}@media(max-width:580px){main{padding:0 14px}.bridge-top-inner{display:block}.bridge-hero{padding:24px}.hero-title{font-size:40px}.check-steps,.rail-grid,.news-grid,.article-grid,.footer-grid{grid-template-columns:1fr}.history-card{grid-template-columns:1fr}.page-hero{padding:26px}}