: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; }
}