.usp{background:linear-gradient(90deg,#13233c,#1c3a5e);color:#fff;padding:26px 0}.usp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.usp-item{padding:16px 18px;border:1px solid #38516e;border-radius:14px;background:rgba(255,255,255,.04)}.usp-item b{display:block;font-size:16px;color:#ff9a4c;margin-bottom:6px}.usp-item span{font-size:13px;line-height:1.6;color:#bdc9d9}.region-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:8px}.region-card{padding:20px;border:1px solid #e8edf3;border-radius:14px;background:linear-gradient(160deg,#f7f9fc,#fff);transition:.2s}.region-card:hover{border-color:#ed7928;transform:translateY(-3px);box-shadow:0 14px 34px #0a1a2e18}.region-card h3{margin:0 0 8px;font-size:16px;color:#172033}.region-card p{margin:0;font-size:13.5px;line-height:1.7;color:#65738a}.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.tag-row span{padding:7px 14px;border-radius:999px;background:#fff3e9;color:#d96618;font-size:13px;font-weight:600;border:1px solid #ffd7b8}@media(max-width:900px){.usp-grid{grid-template-columns:repeat(2,1fr)}.region-grid{grid-template-columns:1fr 1fr}}@media(max-width:560px){.usp-grid{grid-template-columns:1fr}.region-grid{grid-template-columns:1fr}}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;color:#172033;background:#fff}a{text-decoration:none;color:inherit}.wrap{width:min(1160px,calc(100% - 40px));margin:auto}.top{height:76px;padding:0 max(calc((100% - 1160px)/2),20px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #e8edf3;background:#fff}.brand{font-size:22px;font-weight:800}.brand span{color:#ef7d2a}.top nav{display:flex;gap:28px;color:#536174;font-size:14px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 22px;border:1px solid #ed7928;background:#ed7928;color:#fff;border-radius:8px;font-weight:700;font-size:14px;cursor:pointer}.btn:hover{background:#d96618}.btn.ghost{background:transparent;color:inherit;border-color:#a8b3c2}.btn.small{padding:10px 16px}.btn.full{width:100%;margin:8px 0}.hero{background:radial-gradient(circle at 80% 35%,#29476c 0,#14243e 38%,#101a2c 78%);color:#fff;padding:78px 0 72px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:48px}.eyebrow{color:#ed8a42;font-size:11px;font-weight:800;letter-spacing:2px}.hero h1{font-size:clamp(38px,5vw,58px);line-height:1.2;margin:18px 0}.hero h1 em{font-style:normal;color:#ff9a4c}.lead{font-size:17px;line-height:1.9;color:#bdc9d9;max-width:580px}.lead.dark{color:#65738a}.actions{display:flex;gap:12px;margin-top:28px}.trust{display:flex;gap:20px;margin-top:32px;color:#aebbd0;font-size:12px;flex-wrap:wrap}.hero-art{height:320px;position:relative;display:grid;place-items:center;background:linear-gradient(145deg,#203c5e,#101c30);border:1px solid #38516e;border-radius:24px;box-shadow:0 30px 80px #050d1c88;overflow:hidden}.server-stack{z-index:2;width:48%;display:grid;gap:12px;transform:perspective(600px) rotateY(-15deg)}.server-stack i{height:48px;border:1px solid #55718e;border-radius:7px;background:linear-gradient(90deg,#172c45,#294967);position:relative}.server-stack i:after{content:"";position:absolute;right:14px;top:19px;width:8px;height:8px;background:#f49a4a;border-radius:50%;box-shadow:0 0 12px #ff9a4c}.orbit{position:absolute;width:290px;height:290px;border:1px solid #5d779455;border-radius:50%}.hero-art>b{position:absolute;bottom:22px;right:24px;color:#a9bdd4;font-size:10px;letter-spacing:4px;line-height:1.8}.section{padding-top:76px;padding-bottom:76px}.section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:30px}.section h1,.section h2,.band h2,.contact h2{font-size:32px;margin:8px 0}.section-head>p{color:#748094;font-size:13px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{border:1px solid #e5eaf0;border-radius:14px;padding:25px 22px;transition:.2s;background:#fff}.card:hover{transform:translateY(-4px);box-shadow:0 14px 35px #1a2b4210;border-color:#f2b27f}.card-icon{width:44px;height:44px;border-radius:12px;background:#fff1e6;color:#e87927;display:grid;place-items:center;font-size:23px}.card h3{margin:20px 0 9px;font-size:18px}.card p,.features p,.benefits p{color:#7b8797;font-size:13px;line-height:1.8;min-height:46px}.card>a,.read{display:inline-block;margin-top:12px;color:#d96c20;font-weight:700;font-size:13px}.band{background:#f4f6f9;padding:70px 0}.band-inner{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.features b{color:#e87927;font-size:13px}.features h3{font-size:16px}.muted{color:#748094;line-height:1.8}.benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.benefits>div{padding:24px;border:1px solid #e6ebf1;border-radius:12px}.benefits b{font-size:17px}.article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.article-list article{padding:22px;border:1px solid #e6ebf1;border-radius:12px}.article-list span,.article-date{color:#e87927;font-size:11px}.article-list h3{font-size:16px;line-height:1.6}.article-list p{color:#7b8797;font-size:13px;line-height:1.7}.contact{background:#14233b;color:#fff;padding:55px 0}.contact-inner{display:flex;justify-content:space-between;align-items:center;gap:25px}.contact p{color:#bac7d8}.contact .ghost{margin-left:10px;color:#fff;border-color:#8292a8}.foot{padding-top:30px;padding-bottom:30px}.foot p,.foot small{color:#7c8796;font-size:12px}.foot a:not(.brand){color:#68778b}.detail,.article-detail{padding-top:65px;padding-bottom:90px;min-height:60vh}.detail h1,.article-detail h1{font-size:clamp(30px,4vw,44px);line-height:1.3}.detail-grid{display:grid;grid-template-columns:1fr 320px;gap:22px;margin-top:28px}.panel{border:1px solid #e5eaf0;border-radius:14px;padding:28px;line-height:1.9}.panel h2{margin-top:0}.side{height:max-content;background:#f8fafc}.content{white-space:normal;line-height:2;color:#435168}.article-body{max-width:850px;font-size:16px;line-height:2.1;color:#34445b;white-space:pre-line;margin-top:30px}.article-cta{margin-top:45px;padding:28px;background:#f4f6f9;border-radius:14px}.login-bg{min-height:100vh;background:linear-gradient(135deg,#101b30,#233d5c);display:grid;place-items:center;padding:20px}.login{width:min(420px,100%);background:#fff;padding:34px;border-radius:16px;display:grid;gap:12px}.login h1{font-size:23px}.login h1 span,.admin-top span{color:#ed7928}.login label,.admin-form label{font-size:13px;font-weight:700;color:#455166}.login input,.admin-form input,.admin-form textarea{width:100%;padding:12px;border:1px solid #dce2e9;border-radius:7px;font:inherit}.login .btn{margin-top:10px}.error{color:#c0392b;font-size:13px}.admin-bg{background:#f3f5f8}.admin-top{height:62px;background:#172033;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 25px;position:sticky;top:0;z-index:20}.admin-top a{color:#dbe4ef;font-size:13px}.admin-layout{display:grid;grid-template-columns:210px 1fr;min-height:calc(100vh - 62px)}.admin-layout aside{background:#202e44;padding:22px 14px;display:flex;flex-direction:column;gap:7px;position:sticky;top:62px;align-self:start;height:calc(100vh - 62px);overflow-y:auto}.admin-layout aside a{padding:12px;color:#d4deeb;border-radius:7px;font-size:14px}.admin-layout aside a:hover{background:#34445e}.admin-main{padding:32px;max-width:1100px}.admin-main h1{font-size:25px}.admin-main>p{color:#718096;font-size:13px}.admin-form{max-width:780px;background:#fff;border:1px solid #e2e7ed;border-radius:12px;padding:22px;display:grid;gap:10px;margin:22px 0}.admin-form h3{margin:0}.admin-form .check{display:flex;align-items:center;gap:8px}.admin-form .check input{width:auto}.stats{display:flex;gap:15px;margin:25px 0}.stats div{background:#fff;padding:22px 35px;border:1px solid #e4e9ef;border-radius:10px;display:grid;gap:8px}.stats b{font-size:27px}.stats span{font-size:12px;color:#718096}.notice{padding:14px;background:#fff6e9;border:1px solid #f6d4a9;color:#80501f;border-radius:8px;margin:15px 0;font-size:13px}.table-wrap{overflow:auto;background:#fff;border:1px solid #e4e9ef;border-radius:10px}table{width:100%;border-collapse:collapse;font-size:13px}td,th{padding:13px;text-align:left;border-bottom:1px solid #edf0f4}.inline{display:inline}.link-danger{border:0;background:none;color:#c0392b;cursor:pointer}@media(max-width:800px){.top{height:64px}.top nav{display:none}.hero{padding:52px 0}.hero-grid,.band-inner,.detail-grid{grid-template-columns:1fr;gap:28px}.hero-art{height:230px}.cards{grid-template-columns:repeat(2,1fr)}.features,.benefits{grid-template-columns:1fr}.section{padding-top:52px;padding-bottom:52px}.section-head{display:block}.article-list{grid-template-columns:1fr}.contact-inner{display:block}.contact-inner>div:last-child{margin-top:22px}.admin-layout{grid-template-columns:1fr}.admin-layout aside{flex-direction:row;overflow:auto;position:static;top:auto;height:auto}.admin-layout aside a{white-space:nowrap}.admin-main{padding:20px}}@media(max-width:430px){.cards{grid-template-columns:1fr}.actions{flex-wrap:wrap}.contact .ghost{margin:10px 0 0}}
/* ===== tech-dark v1 (前台科技感增强，仅作用于无 body class 的前台) ===== */
body:not(.admin-bg):not(.login-bg){background:radial-gradient(1200px 600px at 80% -10%,#12233f 0,#070c16 55%) #070c16;color:#dbe4f0}
.top{background:rgba(9,14,24,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid #1c2a44}
.top nav{color:#9fb0c7}.top nav a:hover{color:#ff9a4c}.brand{color:#eef3fa}
.lead.dark{color:#9fb0c7}
.section h1,.section h2,.band h2,.contact h2,.detail h1,.article-detail h1,.card h3,.region-card h3,.features h3,.benefits b,.article-cta h2{color:#eef3fa}
.card{background:linear-gradient(160deg,#101a2b,#0b1422);border:1px solid #22345a}
.card:hover{transform:translateY(-5px);border-color:#3b6bff;box-shadow:0 22px 55px #060f1f,0 0 0 1px #3b6bff44}
.card p,.card>a,.card>a span,.read,.section-head>p,.muted,.features p,.benefits p,.article-list p,.region-card p,.foot p,.foot small{color:#8fa0b8}
.card>a,.read{color:#ff9a4c}.read:hover,.card>a:hover{color:#ffb37a}
.region-card{background:linear-gradient(160deg,#0f1828,#0b1320);border:1px solid #22345a}
.region-card:hover{border-color:#ff7a2a;box-shadow:0 18px 45px #060f1f}
.card-icon{background:#14233f;color:#ff9a4c}
.band{background:linear-gradient(180deg,#0b1322,#0a1120)}
.benefits>div{background:#0d1626;border:1px solid #22345a}
.article-list article{background:#0d1626;border:1px solid #22345a}
.article-list article:hover{border-color:#3b6bff}
.panel{background:#0d1626;border:1px solid #22345a}
.content,.article-body{color:#cdd9e8}
.side{background:#0b1320;border-color:#22345a}
.article-cta{background:#0d1626;border:1px solid #22345a}
.contact{background:linear-gradient(180deg,#0c1a30,#0a1424);border-top:1px solid #1c2a44}
.foot{background:#060a12}
.tag-row span{background:#0e2038;color:#5fa8ff;border:1px solid #2b5a9a}
.usp-item{background:linear-gradient(160deg,#12233f,#0c1a30);border:1px solid #2b4a7a}
.btn{background:linear-gradient(90deg,#ff8a3a,#ef6a1a);border:0;box-shadow:0 6px 22px #ef6a1a40;transition:.25s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 34px #ef6a1a66;background:linear-gradient(90deg,#ffa04a,#f07422)}
.btn.ghost{background:transparent;border:1px solid #41557a;color:#cdd9e8}
.btn.ghost:hover{border-color:#ff7a2a;color:#ff9a4c;background:transparent;transform:translateY(-2px);box-shadow:0 6px 18px #0a1a2e66}
.btn.small{border:0}
.btn.full{border:0}
.cta-band{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap;align-items:center;justify-content:center;padding:30px;border-radius:18px;background:radial-gradient(circle at 50% -20%,#1a3a6a66,#0c1a30);border:1px solid #23456f}
.btn.glow{background:linear-gradient(90deg,#ff7a2a,#ff5230);border:0;padding:15px 28px;box-shadow:0 10px 34px #ff6a2a55}
.btn.glow:hover{box-shadow:0 14px 44px #ff6a2a88;transform:translateY(-2px);background:linear-gradient(90deg,#ff8a3a,#ff6238)}
.hero{position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(#ffffff0c 1px,transparent 1px),linear-gradient(90deg,#ffffff0c 1px,transparent 1px);background-size:42px 42px;-webkit-mask-image:radial-gradient(circle at 75% 35%,#000,transparent 72%);mask-image:radial-gradient(circle at 75% 35%,#000,transparent 72%);pointer-events:none}
.hero h1{color:#fff;text-shadow:0 0 30px #2b6cff33}
.hero-art{box-shadow:0 30px 90px #050d1c;background:linear-gradient(145deg,#16325a,#0a1626);border-color:#2a4d7e}
@keyframes orbit-spin{to{transform:rotate(360deg)}}
.orbit{animation:orbit-spin 26s linear infinite;border:1px dashed #5d779455}
@keyframes glow-pulse{0%,100%{opacity:.5}50%{opacity:1}}
.server-stack i:after{animation:glow-pulse 2.6s ease-in-out infinite}
.related{margin-top:46px;padding-top:30px;border-top:1px solid #1c2a44}.related h2{font-size:22px;color:#eef3fa;margin:0 0 18px}.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.rel-card{display:block;background:linear-gradient(160deg,#0f1828,#0b1320);border:1px solid #22345a;border-radius:12px;padding:16px;transition:.2s}.rel-card:hover{border-color:#ff7a2a;transform:translateY(-3px);box-shadow:0 16px 40px #060f1f}.rel-card b{display:block;color:#eef3fa;font-size:15px;margin-bottom:8px;line-height:1.4}.rel-card span{color:#8fa0b8;font-size:12.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.rel-divider{grid-column:1/-1;color:#5fa8ff;font-size:13px;font-weight:700;margin:6px 0 -6px}@media(max-width:700px){.rel-grid{grid-template-columns:1fr 1fr}}@media(max-width:460px){.rel-grid{grid-template-columns:1fr}}