:root{--bg:#06101a;--panel:#0d1b28;--panel2:#102434;--line:#223c50;--text:#eaf3f8;--muted:#99adbb;--cyan:#55d6ff;--cyan2:#1594bd;--amber:#ffb55c;--green:#67dfa8;--red:#ff7187;--shadow:0 24px 70px rgba(0,0,0,.38)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 80% 0,#11334a 0,transparent 30%),var(--bg);color:var(--text);font-family:"Microsoft YaHei UI","PingFang SC","Segoe UI",sans-serif;line-height:1.75}a{color:inherit}button,input,select,textarea{font:inherit}.nav{height:76px;position:sticky;top:0;z-index:50;display:flex;align-items:center;padding:0 max(24px,calc((100vw - 1240px)/2));background:rgba(4,13,21,.86);backdrop-filter:blur(18px);border-bottom:1px solid rgba(95,189,224,.18)}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;font-weight:800;letter-spacing:.03em;white-space:nowrap}.brand img{width:40px;height:40px;border-radius:10px;box-shadow:0 0 24px #55d6ff44}.nav nav{margin-left:auto;display:flex;align-items:center;gap:4px}.nav nav a{padding:9px 13px;text-decoration:none;color:#b7c9d4;border-radius:8px;font-size:14px}.nav nav a:hover,.nav nav a.active{color:#fff;background:#173448}.nav .nav-admin{border:1px solid #38647d;margin-left:8px}.nav-toggle{display:none;margin-left:auto;background:none;color:white;border:0;font-size:24px}
main{min-height:70vh}.hero{min-height:760px;display:flex;align-items:center;position:relative;overflow:hidden;background-image:linear-gradient(90deg,rgba(3,10,17,.97) 0%,rgba(4,13,22,.78) 36%,rgba(4,12,20,.18) 72%),linear-gradient(0deg,var(--bg),transparent 25%),url('/assets/img/hero-flight.png');background-size:cover;background-position:center}.hero-content{width:min(1240px,calc(100% - 48px));margin:auto;padding:80px 0;position:relative}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-weight:700;font-size:13px;letter-spacing:.18em;text-transform:uppercase}.eyebrow:before{content:"";width:28px;height:2px;background:var(--cyan)}h1{font-size:clamp(42px,6vw,76px);line-height:1.08;margin:19px 0 18px;max-width:760px;letter-spacing:-.03em}.hero h1 span{display:block;color:transparent;background:linear-gradient(90deg,#fff,var(--cyan));background-clip:text}.hero-copy{font-size:18px;color:#b7c9d5;max-width:670px;margin:0 0 32px}.button-row{display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:10px;border:1px solid #31556b;text-decoration:none;color:#eaf7fb;background:#112838;cursor:pointer;font-weight:700}.btn.primary{background:linear-gradient(135deg,#1aa7d4,#0d6e96);border-color:#49d0fb;box-shadow:0 10px 35px #1594bd44}.btn.amber{background:linear-gradient(135deg,#d48127,#92511a);border-color:#ffbd69}.btn.danger{background:#3a1720;border-color:#89394a}.btn:hover{transform:translateY(-1px);filter:brightness(1.08)}.hero-metrics{display:flex;gap:36px;margin-top:55px}.metric strong{display:block;font-size:25px;color:white}.metric span{font-size:12px;color:var(--muted);letter-spacing:.08em}
.section{width:min(1240px,calc(100% - 48px));margin:auto;padding:95px 0}.section.compact{padding:55px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}.section-head h2,.page-hero h1{font-size:clamp(30px,4vw,48px);line-height:1.15;margin:9px 0}.section-head p{max-width:580px;color:var(--muted);margin:0}.grid{display:grid;gap:18px}.grid.three{grid-template-columns:repeat(3,1fr)}.grid.four{grid-template-columns:repeat(4,1fr)}.card{background:linear-gradient(145deg,rgba(17,38,54,.95),rgba(10,25,37,.95));border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:0 12px 40px #0002}.card h3{margin:8px 0;font-size:20px}.card p{color:#a9bdc9;margin:8px 0}.card .number{font-size:13px;color:var(--cyan);font-weight:800}.feature-icon{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:#15384d;color:var(--cyan);font-size:22px}.split{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:center}.glass-panel{background:rgba(13,29,42,.78);border:1px solid #2a4d63;border-radius:20px;padding:30px;box-shadow:var(--shadow)}.check-list{list-style:none;padding:0}.check-list li{margin:10px 0;padding-left:29px;position:relative}.check-list li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:bold}
.edition-table{width:100%;border-collapse:separate;border-spacing:0;background:#0b1b28;border:1px solid var(--line);border-radius:16px;overflow:hidden}.edition-table th,.edition-table td{padding:14px;border-bottom:1px solid #203a4d;text-align:center}.edition-table th:first-child,.edition-table td:first-child{text-align:left}.edition-table th{background:#112b3d;color:#dff5fc}.edition-table .yes{color:var(--green);font-weight:900}.edition-table .no{color:#6c8290}.edition-table tr:last-child td{border-bottom:0}.edition-table .featured{background:#123448}.sticky-buy{position:sticky;bottom:18px;z-index:20;display:flex;justify-content:center;margin:26px auto 0}.sticky-buy .btn{box-shadow:0 14px 45px #0008}
.page-hero{padding:90px max(24px,calc((100vw - 1240px)/2)) 55px;background:linear-gradient(135deg,#0b2030,#0f3348);border-bottom:1px solid var(--line)}.page-hero p{color:#aec2ce;max-width:800px}.release{display:grid;grid-template-columns:130px 1fr auto;gap:20px;align-items:start;padding:23px 0;border-bottom:1px solid var(--line)}.release:last-child{border:0}.version-badge{background:#15384c;color:var(--cyan);border:1px solid #2a607a;border-radius:10px;padding:8px 12px;text-align:center;font-weight:800}.release .meta{color:var(--muted);font-size:13px}.tag{display:inline-flex;border-radius:999px;padding:3px 9px;font-size:12px;border:1px solid #36556a;color:#bcd0db}.tag.must{border-color:#a33f51;color:#ff8b9c}.notice{padding:14px 17px;border:1px solid #3d647a;background:#102b3d;border-radius:11px;color:#d0e3ec;margin:16px 0}.notice.warning{border-color:#8b622b;background:#2c2113;color:#ffd494}.notice.success{border-color:#287050;background:#102d23;color:#a6efd0}
.form-card{max-width:760px;margin:auto}.form-row{display:grid;grid-template-columns:1fr auto;gap:10px}.input,select,textarea{width:100%;background:#071622;border:1px solid #315065;color:white;border-radius:9px;padding:11px 12px;outline:none}.input:focus,select:focus,textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px #55d6ff1f}label{display:block;color:#bed0da;font-size:13px;margin:9px 0 4px}.query-result{margin-top:18px}.detail-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.detail{background:#091824;border:1px solid #233e50;border-radius:9px;padding:11px}.detail span{display:block;color:var(--muted);font-size:12px}.detail strong{display:block;margin-top:3px}
.tutorial-layout{display:grid;grid-template-columns:260px 1fr;gap:24px}.tutorial-aside{position:sticky;top:95px;align-self:start}.tutorial-aside a{display:block;text-decoration:none;color:#a8bdc9;padding:7px 10px;border-left:2px solid #264559}.tutorial-aside a:hover{color:var(--cyan);border-color:var(--cyan)}.tutorial-search{margin-bottom:16px}.tutorial-content article{scroll-margin-top:95px;margin-bottom:18px}.tutorial-content h2{color:var(--cyan)}details{border:1px solid var(--line);border-radius:10px;margin:9px 0;background:#0b1b28}summary{cursor:pointer;padding:11px 13px;font-weight:700}details>div{padding:0 14px 14px;color:#b7cad5}
.author-card{display:grid;grid-template-columns:180px 1fr;gap:28px;align-items:center}.author-avatar{width:180px;height:180px;border-radius:24px;object-fit:cover;border:2px solid #51d0f6;box-shadow:0 20px 55px #0007}.link-row{display:flex;gap:10px;flex-wrap:wrap}
footer{border-top:1px solid var(--line);background:#050d14;display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:35px;padding:42px max(24px,calc((100vw - 1240px)/2));color:#8fa5b3;font-size:13px}footer strong{color:white;font-size:17px}footer a{color:var(--cyan)}
.admin-shell{width:min(1440px,calc(100% - 36px));margin:28px auto}.admin-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.admin-tabs{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:18px}.admin-tabs a{padding:8px 12px;border:1px solid var(--line);border-radius:8px;text-decoration:none}.admin-tabs a.active{background:#17394d;color:var(--cyan)}.admin-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.admin-stat{padding:18px;border-radius:12px;background:#102333;border:1px solid var(--line)}.admin-stat strong{font-size:27px;display:block}.data-table{width:100%;border-collapse:collapse;font-size:13px}.data-table th,.data-table td{padding:9px;border-bottom:1px solid #223b4d;text-align:left;vertical-align:top}.data-table th{color:var(--cyan);position:sticky;top:75px;background:#0d1b28}.actions-inline{display:flex;gap:5px;flex-wrap:wrap}.actions-inline button{font-size:12px;padding:4px 7px}.pagination{display:flex;gap:6px;margin-top:16px}.pagination a{padding:5px 9px;border:1px solid var(--line);border-radius:6px;text-decoration:none}.login{max-width:470px;margin:100px auto}
@media(max-width:950px){.nav{height:auto;min-height:68px;flex-wrap:wrap}.nav-toggle{display:block}.nav nav{display:none;width:100%;padding:8px 0 14px;flex-wrap:wrap}.nav nav.open{display:flex}.hero{min-height:670px;background-position:62% center}.grid.three,.grid.four,.admin-grid{grid-template-columns:repeat(2,1fr)}.split,.tutorial-layout{grid-template-columns:1fr}.tutorial-aside{position:relative;top:0}.release{grid-template-columns:100px 1fr}.release .button-row{grid-column:1/-1}.author-card{grid-template-columns:1fr}.author-avatar{width:140px;height:140px}footer{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.hero-content,.section{width:calc(100% - 30px)}.hero{min-height:620px}.hero-metrics{gap:16px;flex-wrap:wrap}.grid.three,.grid.four,.admin-grid{grid-template-columns:1fr}.section{padding:65px 0}.section-head{display:block}.edition-table{font-size:12px}.edition-table th,.edition-table td{padding:8px 5px}.form-row,.detail-grid{grid-template-columns:1fr}.release{display:block}.version-badge{display:inline-block;margin-bottom:10px}.author-card{display:block}.author-avatar{margin-bottom:18px}footer{grid-template-columns:1fr}.admin-shell{width:calc(100% - 20px);overflow:auto}}