:root{--ink:#0d1b37;--muted:#70809b;--blue:#1662eb;--blue2:#267aff;--white:#fff;--bg:#ffffff;--surface:#fff;--subtle:#f4f8ff;--line:#e4ecf8;--shadow:0 8px 30px rgba(28,81,154,.045);--r:15px;--max:1140px;--header:70px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.68;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}img{max-width:100%}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #78afff;outline-offset:3px}.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}.site-header{height:var(--header);position:sticky;top:0;z-index:40;background:rgba(255,255,255,.95);backdrop-filter:blur(18px);border-bottom:1px solid #eff3fa}.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:100%;gap:24px}.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}.brand img{width:44px;height:44px}.brand-title{font-size:20px;font-weight:840;letter-spacing:-.035em;line-height:1.25}.brand-sub{font-size:10px;color:var(--muted);line-height:1.35;font-weight:500}.nav{display:flex;align-items:stretch;height:100%;gap:24px}.nav a{height:100%;display:grid;place-items:center;padding:0 3px;position:relative;font-size:13px;font-weight:700;color:#253653}.nav a.active{color:var(--blue)}.nav a.active:after{content:"";position:absolute;bottom:0;height:3px;left:0;right:0;border-radius:4px 4px 0 0;background:var(--blue)}.nav a:hover{color:var(--blue)}.header-actions{display:flex;align-items:center;gap:9px}.search-pill{display:flex;gap:8px;align-items:center;white-space:nowrap;border:1px solid #e5edf8;border-radius:30px;background:#fbfdff;color:#8997ae;padding:8px 15px;font-size:12px;min-width:208px}.search-pill svg{width:16px}.round-action{width:36px;height:36px;display:grid;place-items:center;border:1px solid #e9eff8;border-radius:50%;background:#fff;color:#1c2f50}.round-action svg{width:17px;height:17px}.mobile-toggle{display:none}.search-pill:hover,.round-action:hover{border-color:#bbd4fc}.hero{position:relative;overflow:hidden;isolation:isolate;background:radial-gradient(ellipse 58% 75% at 9% 62%,#d7eaff 0%,transparent 80%),radial-gradient(ellipse 54% 75% at 97% 22%,#daebff 0%,transparent 76%),linear-gradient(180deg,#f9fcff,#f1f8ff);border-bottom:1px solid #eaf2fd}.hero:before,.hero:after{content:"";position:absolute;z-index:-1;pointer-events:none;width:52%;height:190px;border:1px solid rgba(109,169,245,.22);border-radius:50%;transform:rotate(16deg);bottom:15px;left:-15%;box-shadow:0 22px 0 -1px rgba(170,205,252,.12),0 44px 0 -1px rgba(175,206,246,.12),0 66px 0 -1px rgba(175,206,246,.1)}.hero:after{left:auto;right:-16%;transform:rotate(-17deg)}.hero-inner{padding:37px 24px 42px;text-align:center}.eyebrow{font-size:11px;letter-spacing:.17em;color:#637a9d;font-weight:700}.hero h1{font-size:clamp(32px,3.5vw,46px);letter-spacing:-.06em;line-height:1.38;margin:13px 0 11px;font-weight:870}.hero h1 em{font-style:normal;color:var(--blue)}.hero-lead{font-size:13px;color:#677894;margin:0 0 21px}.hero-search{margin:0 auto;max-width:548px;display:flex;padding:5px 5px 5px 18px;background:#fff;border:1px solid #dfeafa;box-shadow:0 6px 18px rgba(39,101,189,.075);border-radius:14px;align-items:center;gap:11px}.hero-search svg{width:18px;height:18px;color:#516a91;flex-shrink:0}.hero-search input{flex:1;border:0;outline:0;min-width:0;color:var(--ink);font-size:13px;background:transparent}.hero-search button,.primary-btn{border:0;background:linear-gradient(115deg,#287dff,#075de8);color:white;border-radius:10px;font-size:13px;font-weight:750;padding:10px 25px;box-shadow:0 3px 9px rgba(36,106,240,.15)}.hero-search button:hover,.primary-btn:hover{filter:brightness(.96)}.topic-row{margin-top:13px;display:flex;justify-content:center;flex-wrap:wrap;gap:9px}.topic-row button,.topic-row a,.tag{border:0;background:#e8f1ff;color:#546f9d;border-radius:999px;padding:5px 12px;font-size:11px}.topic-row button:hover,.topic-row a:hover{background:#d3e7ff;color:#075cdb}.section{padding:24px 0 0}.section-head{display:flex;align-items:center;gap:15px;margin:0 0 15px}.section-head h2{font-size:23px;letter-spacing:-.045em;margin:0;font-weight:835;line-height:1.4}.section-head .bar{width:5px;height:24px;border-radius:8px;background:var(--blue)}.section-head small{color:#7b8aa4;font-size:12px}.section-head a{margin-left:auto;color:var(--blue);font-weight:740;font-size:12px;white-space:nowrap}.section-head a:hover{text-decoration:underline}.cards-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.cards-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.tool-card,.handbook-card,.project-card,.listing-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);transition:transform .18s,border-color .18s,box-shadow .18s}.tool-card:hover,.handbook-card:hover,.project-card:hover,.listing-card:hover{transform:translateY(-2px);border-color:#b5d4ff;box-shadow:0 15px 34px rgba(28,81,154,.09)}.tool-card{padding:20px 17px 16px;min-height:171px;display:flex;flex-direction:column;gap:10px}.tool-main{display:flex;align-items:flex-start;gap:12px}.tool-icon{width:48px;height:48px;border-radius:11px;display:grid;place-items:center;flex-shrink:0;color:white;font-size:23px;font-weight:700}.tool-icon.blue{background:linear-gradient(145deg,#438fff,#0871f6)}.tool-icon.green{background:linear-gradient(145deg,#34d9b2,#04a993)}.tool-icon.purple{background:linear-gradient(145deg,#a171f8,#6541db)}.tool-icon svg{width:25px;height:25px;stroke:currentColor}.tool-card h3,.handbook-card h3,.project-card h3{font-size:15px;font-weight:800;letter-spacing:-.022em;margin:1px 0 0;line-height:1.5}.tool-card p,.handbook-card p,.project-card p{color:var(--muted);font-size:12px;margin:0;line-height:1.85}.card-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:auto;padding-top:4px}.tags{display:flex;flex-wrap:wrap;gap:5px}.tag{padding:3px 9px;font-size:10px}.card-arrow{width:29px;height:29px;border-radius:50%;background:#edf4ff;display:grid;place-items:center;color:#174276;flex-shrink:0;font-size:18px;line-height:1}.handbook-card{min-height:142px;padding:18px 17px 15px;display:flex;gap:14px;flex-direction:column}.handbook-heading{display:flex;align-items:center;gap:12px}.seq{display:inline-grid;place-items:center;width:37px;height:37px;border-radius:9px;background:#eaf3ff;color:#1166ec;font-weight:850;font-size:16px;flex-shrink:0}.handbook-card .card-bottom{padding-top:1px}.article-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px}.article-mini{display:flex;align-items:center;gap:13px;padding:11px 0;border-bottom:1px solid #e8eef7}.article-mini:last-child:nth-child(odd){border-bottom:0}.article-icon{background:#edf4ff;width:38px;height:38px;flex-shrink:0;border-radius:10px;display:grid;place-items:center;color:#1e6de9}.article-mini h3{font-size:13px;margin:0 0 1px;font-weight:760}.article-mini p{font-size:11px;color:#8a99b0;margin:0}.article-mini .card-arrow{margin-left:auto}.project-card{min-height:128px;padding:19px;display:flex;align-items:flex-start;gap:14px}.project-ico{width:43px;height:43px;border-radius:11px;flex-shrink:0;display:grid;place-items:center;background:linear-gradient(150deg,#0c73ff,#0c42c8);color:#fff;font-size:20px}.project-card .linkline{font-size:12px;color:#1662eb;font-weight:750;margin-top:7px;display:inline-block}.projects{margin-bottom:26px}.footer{margin-top:30px;background:radial-gradient(ellipse 60% 100% at 75% 100%,#123e8d 0%,transparent 67%),linear-gradient(110deg,#0b1729,#0d213f 70%,#0c1e38);color:#fff;position:relative;overflow:hidden}.footer:after{content:"";height:170px;width:100%;position:absolute;bottom:-118px;left:0;border-top:1px solid #1974fd;border-radius:50%;transform:rotate(-3deg);opacity:.5;pointer-events:none}.footer-grid{display:grid;grid-template-columns:1.55fr .72fr .95fr .9fr 1.22fr;gap:26px;padding-top:28px;padding-bottom:24px}.footer .brand-title{color:white}.footer .brand-sub,.footer p,.footer .footer-col a{color:#b8c8df}.footer p{font-size:11px;margin:10px 0}.footer-col h4{margin:0 0 8px;font-size:12px}.footer-col a{display:block;font-size:11px;line-height:2}.footer-col a:hover{color:#fff}.footer-email{display:inline-flex;background:#1c55a9;color:#fff!important;border:1px solid #3a78d7;border-radius:10px;padding:8px 13px;font-size:12px;font-weight:750;margin-top:6px;align-items:center;gap:7px}.footer-bottom{font-size:10px;text-align:center;color:#afc5e8;padding:0 24px 14px}.footer-bottom a{text-decoration:underline}.page-hero{padding:42px 0 32px;background:radial-gradient(ellipse at 94% 20%,#dfefff,transparent 48%),linear-gradient(180deg,#f8fbff,#f2f8ff);border-bottom:1px solid #eaf1fc}.page-hero h1{font-size:39px;letter-spacing:-.06em;line-height:1.24;margin:5px 0 10px}.page-hero p{color:var(--muted);max-width:650px;margin:0;font-size:14px}.kicker{font-size:12px;color:#236dec;font-weight:770}.filter-panel{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0}.filter-btn{border:1px solid #e5edfa;background:#fff;border-radius:999px;color:#6a7c98;font-size:12px;padding:7px 15px}.filter-btn.active,.filter-btn:hover{color:#0962df;background:#eaf3ff;border-color:#c5dbff}.input-search{width:100%;min-height:42px;padding:10px 14px;border:1px solid #dfe8f6;border-radius:10px;background:#fff;outline:0;color:var(--ink)}.input-search:focus{border-color:#5e9cf7;box-shadow:0 0 0 3px #e3efff}.list-top{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:20px 0}.count{font-size:12px;color:#8492a6}.page-body{padding:22px 0 48px;min-height:38vh}.detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 265px;gap:34px;padding-top:30px}.prose{font-size:15px;color:#354763;line-height:2.04}.prose h2{margin:31px 0 10px;font-size:23px;color:#142541;letter-spacing:-.03em}.prose h3{font-size:18px;margin-top:23px;color:#193256}.prose p{margin:0 0 15px}.prose ul,.prose ol{padding-left:23px}.prose li{margin:5px 0}.prose code{padding:2px 5px;border-radius:4px;background:#eef5ff;color:#1158bb}.prose pre{padding:16px;background:#101e34;color:#c9defb;border-radius:12px;overflow-x:auto;font-size:12px;line-height:1.8}.prose pre code{background:transparent;color:inherit}.prose blockquote{border-left:3px solid #4b96ff;background:#f3f8ff;margin:18px 0;padding:12px 18px;border-radius:0 8px 8px 0}.prose table{border-collapse:collapse;width:100%;font-size:13px;margin:16px 0}.prose td,.prose th{border:1px solid #e3ebf7;padding:8px;text-align:left}.prose th{background:#f4f8ff}.sidebar{border:1px solid #e7edf8;background:#fcfdff;border-radius:14px;padding:20px;height:max-content;position:sticky;top:94px}.sidebar h4{font-size:14px;margin:0 0 14px}.sidebar a{display:block;color:#64809e;font-size:12px;padding:8px 0;border-bottom:1px solid #eef2f8}.sidebar a:hover{color:var(--blue)}.breadcrumb{font-size:12px;color:#8090aa;margin-bottom:15px}.breadcrumb a:hover{color:var(--blue)}.detail-title{font-size:36px;letter-spacing:-.055em;line-height:1.3;margin:7px 0 10px}.detail-lead{font-size:15px;color:#7082a0;margin:0 0 20px}.content-meta{font-size:12px;color:#8a99ac;display:flex;gap:12px;flex-wrap:wrap}.feature-box{border:1px solid var(--line);border-radius:14px;padding:21px;background:#fbfdff}.feature-box h2{margin:0 0 12px;font-size:21px}.tool-widget{padding:21px;border:1px solid #e2edfc;border-radius:17px;background:linear-gradient(155deg,#fff,#f8fbff);box-shadow:0 12px 32px rgba(28,80,135,.04)}.widget-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.field{display:flex;flex-direction:column;gap:7px;font-size:12px;font-weight:750;color:#536988}.field input,.field select{width:100%;border:1px solid #dce7f7;background:#fff;border-radius:10px;padding:10px 12px;min-height:43px;outline:none;color:#163355}.field input:focus,.field select:focus{border-color:#5298ff}.result{background:#eef5ff;color:#0a438f;border:1px solid #d3e5ff;border-radius:14px;padding:17px 18px;margin-top:18px}.result b{font-size:25px;color:#075bd7}.result small{display:block;color:#677fa3;font-size:12px}.help{font-size:12px;color:#75869e}.notice{background:#f4f8ff;border:1px solid #e3edfd;padding:12px 15px;border-radius:10px;color:#657894;font-size:12px}.timeline{position:relative;list-style:none!important;padding:0 0 0 20px!important;border-left:2px solid #d8e8ff;margin-left:9px}.timeline li{position:relative;padding:0 0 23px 16px;margin:0}.timeline li:before{content:"";position:absolute;top:7px;left:-27px;width:12px;height:12px;border:3px solid #2c7cff;background:white;border-radius:50%}.timeline h3{font-size:15px;color:#173155;margin:0 0 3px}.timeline p{font-size:13px;margin:0}.modal-layer{position:fixed;inset:0;z-index:100;background:rgba(9,23,44,.53);display:none;align-items:flex-start;justify-content:center;padding:12vh 16px}.modal-layer.open{display:flex}.search-modal{width:min(670px,100%);background:#fff;border-radius:17px;padding:22px;box-shadow:0 30px 100px rgba(0,24,77,.24);max-height:77vh;display:flex;flex-direction:column;gap:10px}.modal-header{display:flex;justify-content:space-between;align-items:center}.modal-header b{font-size:18px}.modal-close{background:#edf4ff;border:0;border-radius:50%;width:32px;height:32px}.search-results{overflow:auto;padding-top:4px}.search-hit{display:flex;flex-direction:column;gap:2px;padding:11px 8px;border-bottom:1px solid #edf2fb}.search-hit:hover{background:#f6f9ff}.search-hit b{font-size:14px}.search-hit span{font-size:11px;color:#7890a9}.no-results{padding:20px;color:#8799b0;text-align:center;font-size:13px}.about-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:22px}.about-card{padding:23px;border:1px solid #e5ecf7;border-radius:16px;background:#fff}.about-card h3{margin:0 0 7px}.about-card p{font-size:13px;color:#61758f}.pill-links{display:flex;gap:9px;flex-wrap:wrap;margin-top:16px}.pill-links a{border:1px solid #d5e6ff;background:#f3f8ff;color:#0d60cb;font-weight:700;font-size:12px;border-radius:9px;padding:8px 12px}.pill-links a:hover{background:#e2f0ff}.is-hidden{display:none!important}.empty-state{padding:38px 15px;text-align:center;color:#7e90a8;border:1px dashed #dfe8f6;border-radius:13px}.breadcrumbs{padding-top:25px}.reader{padding-bottom:50px}.related-link{color:#0b65e2;text-decoration:underline;text-underline-offset:3px}.footnote{font-size:12px;color:#8394ad;margin-top:10px}
[data-theme=dark]{--ink:#e6edff;--muted:#9dafcd;--bg:#101929;--surface:#17243a;--subtle:#1c2c45;--line:#29415e;--shadow:0 10px 25px rgba(0,0,0,.1)}[data-theme=dark] .site-header{background:rgba(16,25,41,.95);border-bottom-color:#2d3b52}[data-theme=dark] .nav a{color:#d4e4ff}[data-theme=dark] .search-pill,[data-theme=dark] .round-action,[data-theme=dark] .filter-btn,[data-theme=dark] .input-search{background:#1c2b45;color:#c5d6ef;border-color:#35506f}[data-theme=dark] .hero,[data-theme=dark] .page-hero{background:radial-gradient(ellipse at 8% 50%,#1a3b67,transparent 60%),#14233a;border-color:#2a4767}[data-theme=dark] .eyebrow,[data-theme=dark] .hero-lead{color:#abc1dd}[data-theme=dark] .hero-search,[data-theme=dark] .search-modal,[data-theme=dark] .field input,[data-theme=dark] .field select{background:#1c2b45;border-color:#3b5270;color:#eff5ff}[data-theme=dark] .topic-row a,[data-theme=dark] .tag{background:#253d5e;color:#b6d3fa}[data-theme=dark] .tool-card,[data-theme=dark] .handbook-card,[data-theme=dark] .project-card,[data-theme=dark] .listing-card,[data-theme=dark] .about-card,[data-theme=dark] .feature-box,[data-theme=dark] .tool-widget,[data-theme=dark] .sidebar{background:#18273f;border-color:#2a4361}[data-theme=dark] .prose,[data-theme=dark] .prose h2,[data-theme=dark] .prose h3{color:#d6e4f9}[data-theme=dark] .article-mini{border-color:#344760}[data-theme=dark] .notice,[data-theme=dark] .result,[data-theme=dark] .prose blockquote{background:#1d3554;color:#c3d8f4;border-color:#436990}[data-theme=dark] .result b{color:#78b1ff}[data-theme=dark] .modal-layer{background:rgba(0,0,0,.68)}[data-theme=dark] .search-hit{border-color:#36465f}[data-theme=dark] .search-hit:hover{background:#203651}[data-theme=dark] .field{color:#adc3de}[data-theme=dark] .prose th{background:#213654}[data-theme=dark] .prose td,[data-theme=dark] .prose th{border-color:#30445e}
@media(max-width:1020px){.nav{gap:15px}.header-actions .search-pill{min-width:0;font-size:0;padding:9px}.header-actions .search-pill svg{width:17px}.footer-grid{grid-template-columns:1.35fr .7fr 1fr 1fr;gap:16px}.footer-grid>:last-child{grid-column:1/-1}.tool-card{padding:16px 13px}.tool-icon{width:42px;height:42px}.project-card{padding:15px}}
@media(max-width:760px){:root{--header:63px}.wrap{padding-left:18px;padding-right:18px}.brand img{width:37px;height:37px}.brand-title{font-size:17px}.brand-sub{font-size:9px}.nav{display:none;position:absolute;top:62px;left:0;right:0;height:auto;background:var(--surface);padding:8px 20px 16px;box-shadow:0 14px 25px rgba(20,53,100,.12);border-bottom:1px solid var(--line);flex-direction:column;gap:0}.nav.open{display:flex}.nav a{height:43px;display:flex;align-items:center}.nav a.active:after{height:0}.mobile-toggle{display:grid}.search-pill{display:none!important}.header-actions{gap:5px}.hero-inner{padding:36px 18px 38px}.hero h1{font-size:32px}.hero-lead{font-size:12px;line-height:1.85}.hero-search{padding-left:12px}.hero-search button{padding:10px 17px}.hero:before,.hero:after{opacity:.5}.cards-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.cards-2{grid-template-columns:1fr}.tool-card{min-height:160px;padding:14px;gap:8px}.tool-main{gap:9px}.tool-icon{width:39px;height:39px;font-size:20px}.tool-card h3{font-size:13px}.tool-card p{font-size:11px}.tag{font-size:9px;padding:3px 7px}.handbook-card{padding:15px}.handbook-card h3{font-size:13px}.section{padding-top:23px}.section-head{flex-wrap:wrap;gap:8px}.section-head h2{font-size:21px}.section-head small{font-size:11px}.section-head a{font-size:11px}.article-columns{grid-template-columns:1fr}.article-mini{padding:12px 0}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 25px}.footer-grid .footer-brand{grid-column:1/-1}.footer-grid>:last-child{grid-column:1/-1}.page-hero{padding:34px 0 27px}.page-hero h1{font-size:30px}.detail-layout{grid-template-columns:1fr;gap:20px}.sidebar{position:static;order:-1;padding:16px}.detail-title{font-size:28px}.widget-grid{grid-template-columns:1fr}.about-grid{grid-template-columns:1fr}.footer-bottom{padding-bottom:20px}}
@media(max-width:390px){.hero h1{font-size:29px}.topic-row{gap:5px}.topic-row a{padding:4px 8px}.tool-card p{line-height:1.6}.tool-icon{width:36px;height:36px}.cards-3{gap:9px}.project-card{min-height:unset}}
@media(max-width:760px){.projects .cards-3{grid-template-columns:1fr}.projects .project-card{min-height:110px}.projects .project-card p{line-height:1.55}}
@media(max-width:490px){.cards-3 .handbook-card{grid-column:1/-1}.handbook-card{min-height:unset}.cards-3 .tool-card .tool-main{flex-direction:column;align-items:flex-start}.page-body .cards-3 .tool-card{min-height:190px}.tool-widget .cards-3{grid-template-columns:1fr}}

/* V1.1 — Chinese typography and readability refinements
   Fix compressed Chinese headlines; preserve original branding and layout. */
body {
  letter-spacing: normal;
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", "Segoe UI", sans-serif;
}
.brand-title, .hero h1, .section-head h2, .page-hero h1,
.detail-title, .tool-card h3, .handbook-card h3, .project-card h3,
.prose h2, .article-mini h3 {
  letter-spacing: 0;
}
/* Small labels should remain legible after deployment on Windows screens. */
.brand-sub { font-size: 11px; line-height: 1.48; }
.nav a { font-size: 14px; }
.search-pill { font-size: 13px; }
.hero-lead { font-size: 14px; }
.hero-search input { font-size: 14px; }
.section-head small, .section-head a { font-size: 13px; }
.tool-card p, .handbook-card p, .project-card p {
  font-size: 13px;
  line-height: 1.72;
}
.tag { font-size: 11px; line-height: 1.4; }
.article-mini h3 { font-size: 14px; line-height: 1.5; }
.article-mini p { font-size: 12px; line-height: 1.5; }
.footer p, .footer-col a { font-size: 12px; }
.footer-col h4 { font-size: 13px; }
.footer-bottom { font-size: 11px; }
/* Clearer mobile type without increasing card density. */
@media (max-width: 760px) {
  .brand-sub { font-size: 10px; }
  .hero-lead { font-size: 13px; }
  .tool-card p { font-size: 12px; line-height: 1.6; }
  .tool-card h3, .handbook-card h3 { font-size: 14px; }
  .tag { font-size: 10px; padding: 3px 7px; }
  .section-head small, .section-head a { font-size: 12px; }
}

/* V1.2: keyboard navigation and reduced motion; does not alter approved layout */
html{scroll-padding-top:90px}
.skip-link{position:fixed;z-index:200;top:-80px;left:18px;background:#fff;border:2px solid #2563eb;color:#10294d;padding:9px 16px;border-radius:8px;font-weight:700}.skip-link:focus{top:12px}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}

/* 大奇知录首页视觉参考复刻 · 保留网站交互及原有设计语言 */
:root{--max:1200px;--ink:#102349;--blue:#1060eb;--muted:#697f9e}
body{font-family:"Microsoft YaHei UI","Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;letter-spacing:0}
.site-header{height:69px}.nav-wrap{max-width:1200px}
.hero{background:radial-gradient(ellipse 50% 88% at 0% 67%,#dcecff 5%,transparent 81%),radial-gradient(ellipse 46% 83% at 100% 19%,#ddecff 2%,transparent 76%),linear-gradient(180deg,#fff,#f3f9ff);border-color:#edf3ff}
.hero:before{width:77%;height:230px;bottom:-91px;left:-21%;transform:rotate(10deg);border-color:rgba(95,157,239,.23);box-shadow:0 18px 0 -1px rgba(159,202,255,.16),0 38px 0 -1px rgba(159,202,255,.13),0 62px 0 -1px rgba(159,202,255,.12)}
.hero:after{width:77%;height:230px;bottom:-94px;right:-24%;transform:rotate(-10deg);border-color:rgba(95,157,239,.2);box-shadow:0 18px 0 -1px rgba(159,202,255,.15),0 38px 0 -1px rgba(159,202,255,.12),0 62px 0 -1px rgba(159,202,255,.1)}
.hero-inner{padding-top:44px;padding-bottom:43px}
.hero h1{font-size:clamp(33px,3.5vw,49px);letter-spacing:0;line-height:1.35;margin:15px 0 10px;font-weight:900}
.hero h1 em{font-style:normal;background:linear-gradient(115deg,#144dbf,#1264ff 72%);color:transparent;background-clip:text;-webkit-background-clip:text}
.hero-lead{font-size:14px;margin-bottom:23px;color:#627b9e}
.hero-search{max-width:590px;box-shadow:0 9px 36px rgba(38,102,216,.10);border-radius:16px}
.hero-search button{background:linear-gradient(125deg,#3187ff,#0754e8);box-shadow:0 3px 10px rgba(25,99,229,.16)}
.topic-row{margin-top:12px}.topic-row button{border:0;border-radius:100px;background:rgba(225,237,254,.7);color:#6b80a4;font-size:11px;padding:4px 11px;transition:.2s}.topic-row button:hover{background:#d6e7ff;color:#135ddd}
.section{padding-top:24px}.section-head{margin-bottom:17px}.section-head h2{font-size:22px}.section-head .bar{width:4px;height:22px}.section-head small{font-size:13px}
.tool-card,.project-card{border:1px solid #e0e9f6;background:#fff;box-shadow:0 10px 22px rgba(15,73,159,.035);border-radius:15px}
.tool-card{min-height:171px;padding:21px 21px 15px}
.tool-main{gap:14px}.tool-icon{width:45px;height:45px;border-radius:11px}.tool-card h3{font-size:15px}.tool-card p{font-size:13px;line-height:1.65}.card-arrow{background:#edf4ff;color:#1262e9}.tag{background:#eaf2ff;color:#6780a9}
.featured-manual{position:relative;min-height:250px;display:grid;grid-template-columns:235px minmax(0,1fr) 320px;align-items:center;gap:28px;border:1px solid #e0e9f9;border-radius:17px;background:radial-gradient(ellipse 75% 120% at 0% 80%,#f1f7ff 0%,transparent 68%),linear-gradient(114deg,#f8fbff 0%,#fff 53%,#f9fbff 100%);overflow:hidden;padding:21px 26px;box-shadow:0 9px 30px rgba(39,97,167,.035)}
.featured-manual:before{content:"";position:absolute;inset:auto 20% -180px auto;width:300px;height:300px;border:1px solid rgba(64,130,235,.07);border-radius:50%;pointer-events:none;box-shadow:0 0 0 26px rgba(43,118,229,.018),0 0 0 54px rgba(43,118,229,.015)}
.manual-cover-side{position:relative;display:flex;align-items:center;justify-content:center;height:211px}
.book3d{width:128px;height:189px;display:flex;flex-direction:column;justify-content:space-between;color:#fff;background:linear-gradient(145deg,#0353d9,#206eff 70%,#0f51c9);border-radius:2px 8px 8px 2px;padding:17px 11px 13px 16px;box-shadow:-7px 8px 1px #104299,8px 11px 0 #dce7f9,0 18px 30px rgba(24,76,175,.22);transform:perspective(600px) rotateY(-9deg) rotateZ(-2deg);transition:transform .22s;position:relative}
.book3d:before{content:"";position:absolute;inset:0 auto 0 0;width:10px;background:linear-gradient(90deg,rgba(0,24,103,.6),rgba(255,255,255,.12));border-radius:2px 0 0 2px}
.book3d:after{content:"";position:absolute;left:0;right:0;bottom:23px;height:32px;background:linear-gradient(140deg,transparent 25%,rgba(196,225,255,.12) 26%,rgba(230,240,255,.04) 65%,transparent 66%);pointer-events:none}
.book3d:hover{transform:perspective(600px) rotateY(-3deg) translateY(-3px)}
.cover-kicker{font-size:7px;letter-spacing:.13em;color:#c4dcff}
.cover-center{font-weight:800;font-size:18px;line-height:1.6}
.cover-foot{font-size:9px;letter-spacing:.14em;color:#c3ddff}
.manual-intro{position:relative;min-width:0}.manual-pill{display:inline-flex;background:#e5f0ff;color:#1864e8;font-size:11px;font-weight:700;padding:5px 11px;border-radius:100px}
.manual-intro h3{font-size:23px;line-height:1.32;letter-spacing:0;font-weight:850;margin:10px 0;color:#102349}.manual-intro p{margin:0;color:#6b80a3;font-size:13px;line-height:1.85;max-width:450px}.manual-tags{display:flex;gap:8px;flex-wrap:wrap;margin:13px 0 15px}.manual-tags span{border-radius:100px;background:#eaf2ff;color:#567eae;font-size:10px;padding:4px 10px}
.manual-actions{display:flex;align-items:center;gap:15px;flex-wrap:wrap}.primary-link{display:inline-flex;align-items:center;gap:15px;background:linear-gradient(110deg,#2a79ff,#0956e8);color:#fff;font-size:12px;font-weight:750;border-radius:9px;padding:10px 18px;box-shadow:0 5px 13px rgba(27,103,235,.15)}.primary-link:hover{filter:brightness(1.07)}.subtle-link{font-weight:700;color:#1261e6;font-size:12px}
.manual-outline{border-left:1px solid #e0e9f6;position:relative;padding-left:23px;display:flex;flex-direction:column;gap:13px}.outline-title{font-size:12px;font-weight:800;color:#122a52;margin-bottom:1px}.manual-outline>a{display:flex;align-items:center;gap:10px;min-height:47px;border-radius:8px;padding:2px 0}.manual-outline>a:hover{color:#1160e9}.outline-ico{width:38px;height:38px;flex-shrink:0;display:grid;place-items:center;background:#e9f2ff;color:#1763e7;border-radius:50%;font-size:19px;font-weight:700}.manual-outline strong,.manual-outline small{display:block}.manual-outline strong{font-size:13px;line-height:1.4}.manual-outline small{font-size:11px;color:#7a8dad;line-height:1.5;margin-top:2px}
.article-mini{min-height:67px}.article-mini h3{font-size:14px}.article-mini p{font-size:12px}
.projects{padding-bottom:32px}.project-card{padding:21px;min-height:126px}.project-card h3{font-size:15px}
.footer-new{background:radial-gradient(ellipse 63% 80% at 84% 106%,#164ba1 0%,transparent 73%),linear-gradient(117deg,#09162b 0%,#0d2241 78%,#0d2a58 100%)}
.footer-new .footer-grid{grid-template-columns:1.5fr .7fr .82fr 1.35fr;gap:34px;padding-top:35px;padding-bottom:23px}
.footer-new .footer-col h4{font-size:14px}.footer-new .footer-brand p{font-size:12px;margin:14px 0 0}.footer-new .footer-col a{line-height:1.8}.footer-new .footer-col p{font-size:12px;color:#a4bad9;line-height:1.8;margin:10px 0}
.footer-contact{display:flex!important;align-items:center;gap:9px;justify-content:flex-start;max-width:250px;margin-top:8px;padding:8px 13px;border-radius:9px;background:#1853ad;color:#fff!important;font-size:12px!important;font-weight:750}.footer-contact>span:last-child{margin-left:auto}.footer-small-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.footer-small-links a{font-size:10px!important;color:#8fa9ce!important}.footer-small-links a+a:before{content:'|';margin-right:9px;color:#5977a6}.footer-bottom{border-top:1px solid rgba(191,210,244,.14);font-size:11px}
[data-theme=dark] .featured-manual{background:linear-gradient(120deg,#182c46,#132037);border-color:#284568}[data-theme=dark] .manual-intro h3,[data-theme=dark] .outline-title{color:#e9f2ff}[data-theme=dark] .manual-outline{border-color:#305073}[data-theme=dark] .manual-outline strong{color:#e6f1ff}[data-theme=dark] .manual-pill,[data-theme=dark] .manual-tags span,[data-theme=dark] .outline-ico{background:#21426c;color:#bcdcff}[data-theme=dark] .hero{background:linear-gradient(120deg,#142742,#162844)}
@media(min-width:1920px){.wrap{max-width:1220px}}
@media(max-width:1030px){.featured-manual{grid-template-columns:172px minmax(0,1fr) 255px;gap:18px;padding:18px}.manual-outline{padding-left:14px}.manual-intro h3{font-size:20px}.footer-new .footer-grid{gap:20px}}
@media(max-width:820px){.featured-manual{grid-template-columns:160px minmax(0,1fr);gap:18px}.manual-outline{grid-column:1/-1;border-left:0;border-top:1px solid #e1eaf6;padding:15px 0 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.manual-outline .outline-title{grid-column:1/-1}.manual-outline>a{align-items:start;gap:7px}.manual-outline small{display:none}.manual-outline strong{font-size:11px}.outline-ico{width:30px;height:30px}.footer-new .footer-grid{grid-template-columns:1.2fr 1fr;gap:27px}}
@media(max-width:760px){.hero-inner{padding-top:37px;padding-bottom:36px}.hero h1{font-size:31px}.hero-lead{font-size:12px}.featured-manual{grid-template-columns:124px minmax(0,1fr);padding:14px;gap:15px}.manual-cover-side{height:179px}.book3d{width:100px;height:151px;padding:11px 9px 11px 13px}.cover-center{font-size:13px}.cover-kicker{font-size:5px}.manual-intro h3{font-size:17px}.manual-intro p{font-size:11px;line-height:1.7}.manual-tags{gap:5px;margin:9px 0}.manual-tags span{font-size:9px;padding:3px 7px}.primary-link{font-size:10px;padding:8px 12px}.subtle-link{font-size:10px}.manual-outline{grid-template-columns:1fr 1fr 1fr}.footer-new .footer-grid{grid-template-columns:1fr 1fr}.footer-new .footer-brand{grid-column:1/-1}.footer-new .footer-col:last-child{grid-column:1/-1}}
@media(max-width:600px){.section:not(.projects)>.cards-3{grid-template-columns:1fr}.section .cards-3 .tool-card{min-height:128px;padding:16px}.section .cards-3 .tool-card .tool-main{flex-direction:row;align-items:center;gap:12px}.section .cards-3 .tool-card .tool-main h3{font-size:14px}.section .cards-3 .tool-card p{font-size:12px;line-height:1.65}.section .cards-3 .tool-card .tool-icon{width:38px;height:38px}}
@media(max-width:475px){.hero h1{font-size:clamp(26px,7vw,31px)}.featured-manual{grid-template-columns:105px minmax(0,1fr);gap:13px;padding:14px 11px}.manual-cover-side{height:155px}.book3d{width:89px;height:138px}.cover-center{font-size:12px}.manual-pill{font-size:9px}.manual-intro h3{font-size:15px;line-height:1.45;margin:7px 0}.manual-intro p{font-size:10px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.manual-actions{gap:8px}.manual-outline{display:none}.manual-tags span:nth-child(n+3){display:none}.section-head h2{font-size:19px}.section-head small{font-size:11px}.section-head .bar{height:20px}.footer-new .footer-grid{grid-template-columns:1fr 1fr}.footer-new .footer-col:last-child{grid-column:1/-1}.footer-contact{max-width:100%}}

/* V1.5: calm, readable handbook cover — no aggressive 3D fake spine */
.featured-manual{grid-template-columns:207px minmax(0,1fr) 318px;min-height:242px;gap:26px;padding:20px 27px;background:linear-gradient(110deg,#f6faff 0%,#fff 50%,#fbfdff 100%);}
.featured-manual:before{opacity:.45;}
.manual-cover-side{height:201px;perspective:none;}
.book3d{isolation:isolate;width:145px;height:191px;display:flex;flex-direction:column;justify-content:space-between;box-sizing:border-box;position:relative;overflow:hidden;padding:17px 16px 16px 20px;border:1px solid rgba(31,101,208,.22);border-radius:5px 8px 8px 5px;color:#fff;background:radial-gradient(ellipse 130px 130px at 126% 104%,rgba(191,224,255,.38) 0%,transparent 95%),radial-gradient(ellipse 105px 130px at 10% 112%,rgba(8,56,168,.5),transparent 100%),linear-gradient(152deg,#2477ed 0%,#1462dd 53%,#2d84f1 100%);box-shadow:0 11px 20px rgba(19,77,160,.13),2px 2px 0 rgba(165,192,232,.45);transform:none;transition:box-shadow .18s ease,translate .18s ease;text-align:left;text-decoration:none;}
.book3d:before{position:absolute;content:"";inset:0 auto 0 0;width:4px;background:linear-gradient(90deg,rgba(2,36,109,.45),rgba(255,255,255,.18));border-radius:5px 0 0 5px;z-index:0;}
.book3d:after{position:absolute;content:"";left:-37px;right:-40px;bottom:-62px;height:100px;border:1px solid rgba(220,238,255,.26);border-radius:50%;box-shadow:0 -16px 0 -1px rgba(245,249,255,.055),0 -31px 0 -1px rgba(245,249,255,.04);pointer-events:none;z-index:0;background:none;}
.book3d>span{position:relative;z-index:1;}
.book3d:hover{transform:none;translate:0 -2px;box-shadow:0 15px 25px rgba(19,77,160,.18),2px 2px 0 rgba(165,192,232,.45);}
.cover-kicker{font-size:8px;letter-spacing:.1em;font-weight:650;color:#deedff;white-space:nowrap;}
.cover-center{font-weight:800;font-size:15px;line-height:1.52;letter-spacing:-.01em;word-break:keep-all;overflow-wrap:anywhere;display:block;max-height:5.8em;overflow:hidden;}
.cover-foot{font-size:8px;letter-spacing:.09em;font-weight:600;color:#e2efff;white-space:nowrap;display:flex;gap:4px;}
.book3d.has-cover{padding:0;background:#e9f1fb;border-color:#dbe9f5;}
.book3d.has-cover:before,.book3d.has-cover:after{content:none;}
.book3d .manual-cover-img{display:block;position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:2;}
.manual-intro h3{font-size:22px;letter-spacing:-.017em;}
.manual-intro p{line-height:1.75;}
.manual-outline{gap:8px;}
.manual-outline>a{min-height:47px;}
.outline-ico{width:34px;height:34px;font-size:15px;background:#edf4ff;border-radius:12px;}
.tool-card,.project-card{transition:border-color .18s ease,box-shadow .18s ease,translate .18s ease;}
.tool-card:hover,.project-card:hover{border-color:#c7dafa;box-shadow:0 12px 26px rgba(22,83,174,.09);translate:0 -2px;}
.tool-card p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.tool-card .card-bottom{margin-top:auto;}
.section-head small{color:#8496af;}
.article-mini:hover{background:rgba(235,244,255,.57);}
.footer-contact{box-shadow:none;min-height:37px;}
@media(max-width:1030px){.featured-manual{grid-template-columns:170px minmax(0,1fr) 253px;gap:16px;padding:18px;}.manual-outline{padding-left:15px;}}
@media(max-width:820px){.featured-manual{grid-template-columns:155px minmax(0,1fr);}.manual-outline{grid-column:1/-1;}}
@media(max-width:760px){.featured-manual{grid-template-columns:128px minmax(0,1fr);gap:14px;padding:15px;}.manual-cover-side{height:176px;}.book3d{width:121px;height:162px;padding:13px 11px 12px 15px;}.cover-kicker{font-size:6px;}.cover-center{font-size:13px;}.cover-foot{font-size:7px;}.manual-intro h3{font-size:17px;}}
@media(max-width:475px){.featured-manual{grid-template-columns:108px minmax(0,1fr);gap:12px;padding:14px 11px;}.manual-cover-side{height:151px;}.book3d{width:103px;height:142px;padding:11px 9px 10px 13px;}.cover-center{font-size:11px;line-height:1.46;}.cover-kicker{font-size:5.4px;letter-spacing:.06em;}.cover-foot{font-size:6.4px;}.manual-intro p{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}.manual-intro h3{font-size:15px;}}
@media(prefers-reduced-motion:reduce){.book3d,.tool-card,.project-card{transition:none!important;}}
[data-theme=dark] .book3d{border-color:#426da9;}