:root{--primary:#0077b6;--primary-2:#00b4d8;--deep:#0b3558;--ink:#102a43;--muted:#5f7487;--surface:#fff;--soft:#edf8fc;--sand:#f0e6d3;--green:#52b788;--line:#dcecf3;--shadow:0 18px 55px rgba(12,65,96,.12);--radius:22px}
html[data-theme="spring"]{--primary:#188c78;--primary-2:#7bc8a4;--deep:#184e42;--soft:#eef9f4;--sand:#f7e7ec}
html[data-theme="summer"]{--primary:#0077b6;--primary-2:#ffc857;--deep:#023e8a;--soft:#eaf8ff;--sand:#fff1d5}
html[data-theme="autumn"]{--primary:#b56024;--primary-2:#e6a756;--deep:#5d3b26;--soft:#fff7ed;--sand:#f2dfc1}
html[data-theme="winter"]{--primary:#456a8e;--primary-2:#a9d6e5;--deep:#1d3557;--soft:#f2f8fb;--sand:#edf2f7}
html[data-theme="global"]{--primary:#3157b8;--primary-2:#6a8cff;--deep:#14254f;--soft:#f0f4ff;--sand:#e9edf8}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,"Microsoft YaHei",system-ui,-apple-system,sans-serif;color:var(--ink);background:linear-gradient(180deg,#fff 0,var(--soft) 55%,#fff 100%);line-height:1.65}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.wrap{width:min(1180px,calc(100% - 32px));margin:auto}.notice{background:#072e4d;color:#dff6ff;font-size:13px}.notice .wrap{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}.notice strong{color:#fff}.notice a{text-decoration:underline}.header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.9);backdrop-filter:blur(18px);border-bottom:1px solid rgba(220,236,243,.8)}.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand img{width:180px;display:block}.nav-links{display:flex;gap:24px;align-items:center;font-size:15px;color:#33576f}.nav-links a:hover{color:var(--primary)}.nav-actions{display:flex;gap:10px;align-items:center}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:11px 18px;font-weight:700;cursor:pointer;transition:.2s ease}.btn:hover{transform:translateY(-2px)}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:0 10px 25px rgba(0,119,182,.24)}.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--deep)}.theme-button{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:#fff;cursor:pointer}.mobile-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:12px}.hero{position:relative;min-height:640px;overflow:hidden;color:#fff;background:var(--deep)}.hero-bg{position:absolute;inset:0;background:url('../img/coastline.svg') center/cover 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span{font-size:12px;color:#d4edf5}.section{padding:92px 0}.section-title{max-width:760px;margin-bottom:38px}.section-title .kicker{color:var(--primary);font-weight:800;font-size:13px;letter-spacing:2px}.section-title h2{font-size:clamp(30px,4vw,48px);line-height:1.18;margin:10px 0 14px;color:var(--deep)}.section-title p{color:var(--muted);font-size:17px}.grid{display:grid;gap:20px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.card{background:rgba(255,255,255,.93);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:.25s}.card:hover{transform:translateY(-5px);border-color:rgba(0,119,182,.28)}.icon{width:48px;height:48px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--soft),#fff);color:var(--primary);font-size:23px;border:1px solid var(--line)}.card h3{font-size:20px;margin:18px 0 8px;color:var(--deep)}.card p{color:var(--muted);margin:0}.card .tag{display:inline-block;margin-top:18px;padding:5px 10px;border-radius:999px;background:var(--soft);color:var(--primary);font-size:12px;font-weight:700}.split{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}.panel{border-radius:28px;background:linear-gradient(145deg,#082f4e,#0d6b9f);color:#fff;padding:38px;box-shadow:0 25px 70px rgba(3,47,77,.25)}.panel h3{font-size:30px;margin:0 0 12px}.panel p{color:#d8edf7}.platform-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:25px}.platform-item{background:rgba(255,255,255,.1);padding:14px 16px;border-radius:15px;border:1px solid rgba(255,255,255,.14)}.status{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:22px;padding:16px;border-radius:16px;background:#fff;color:var(--ink)}.status-dot{width:10px;height:10px;border-radius:50%;background:#f0ad4e;box-shadow:0 0 0 5px rgba(240,173,78,.13)}.status.online .status-dot{background:#26a269}.steps{counter-reset:step;display:grid;gap:14px}.step{counter-increment:step;display:grid;grid-template-columns:52px 1fr;gap:16px;align-items:start;padding:20px;border:1px solid var(--line);border-radius:18px;background:#fff}.step:before{content:counter(step);width:46px;height:46px;border-radius:15px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;font-weight:800}.step h4{margin:2px 0 4px;color:var(--deep)}.step p{margin:0;color:var(--muted)}.theme-drawer{position:fixed;right:18px;top:92px;z-index:50;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px;padding:14px;display:none;width:230px}.theme-drawer.open{display:block}.theme-drawer h4{margin:4px 4px 10px}.theme-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.theme-option{border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px;text-align:left;cursor:pointer;font-size:13px}.theme-option:hover{border-color:var(--primary)}.cta{padding:40px;border-radius:30px;background:linear-gradient(135deg,var(--deep),var(--primary));color:#fff;display:flex;justify-content:space-between;align-items:center;gap:30px}.cta h2{font-size:34px;margin:0}.cta p{margin:6px 0 0;color:#d9edf5}.footer{background:#061f33;color:#c9dce7;padding:55px 0 28px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:30px}.footer h4{color:#fff}.footer a{display:block;margin:7px 0;color:#c9dce7}.footer small{color:#94adbd}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:35px;padding-top:22px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;font-size:13px}.disclaimer{background:#fff7e3;border:1px solid #f1d89a;color:#684c08;border-radius:16px;padding:16px 18px;margin:20px 0}.platform-hero{padding:70px 0;background:linear-gradient(140deg,#061f33,#0b5f8d);color:#fff}.platform-shell{display:grid;grid-template-columns:250px 1fr;gap:24px;margin-top:30px}.sidebar{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;height:max-content;position:sticky;top:100px}.sidebar a{display:flex;padding:12px 14px;border-radius:12px;margin:4px 0;color:#4e6678}.sidebar a:hover,.sidebar a.active{background:var(--soft);color:var(--primary);font-weight:700}.dashboard{display:grid;gap:20px}.dashboard-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.mini-stat{padding:20px;background:#fff;border:1px solid var(--line);border-radius:18px}.mini-stat strong{font-size:28px;color:var(--deep);display:block}.mini-stat span{font-size:13px;color:var(--muted)}.planner{background:#fff;border:1px solid var(--line);border-radius:24px;padding:26px}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.field label{display:block;font-size:13px;font-weight:700;color:var(--deep);margin-bottom:7px}.field input,.field select{width:100%;padding:12px 14px;border:1px solid #cfe1ea;border-radius:12px;background:#fff}.result{margin-top:22px;border-left:4px solid var(--primary);padding:16px 18px;background:var(--soft);border-radius:0 14px 14px 0;display:none}.result.show{display:block}.feature-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.feature-chip{padding:16px;border:1px solid var(--line);border-radius:16px;background:#fff}.feature-chip small{color:var(--muted)}.badge{display:inline-flex;align-items:center;padding:4px 8px;border-radius:999px;font-size:11px;font-weight:800;background:#fff0cc;color:#7a5700}.badge.safe{background:#e7f7ee;color:#146c43}.badge.future{background:#eaf1ff;color:#244f9e}.mobile-nav{display:none}
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@media(max-width:600px){.wrap{width:min(100% - 22px,1180px)}.notice .wrap{padding:7px 0;align-items:flex-start;flex-direction:column;gap:0}.nav{height:68px}.brand img{width:150px}.hero h1{font-size:42px}.hero-content{padding:72px 0 85px}.hero-metrics{grid-template-columns:1fr 1fr}.section{padding:64px 0}.grid-3,.grid-4,.feature-row,.dashboard-grid,.form-grid,.footer-grid{grid-template-columns:1fr}.platform-list{grid-template-columns:1fr}.cta{padding:28px;align-items:flex-start;flex-direction:column}.cta h2{font-size:28px}.nav-actions .btn-primary{display:none}}