:root{--ink:#19202c;--muted:#667180;--blue:#1765c1;--blue2:#0e4b98;--navy:#12213a;--line:#dde4ec;--wash:#f5f7fa;--good:#16845b;--bad:#b83542;--radius:24px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button{cursor:pointer}a{color:inherit}h1,h2,h3,p{margin-top:0}.shell{width:min(1120px,calc(100% - 40px));margin:auto}.site-nav{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.88);backdrop-filter:blur(20px);border-bottom:1px solid rgba(23,38,60,.08)}.site-nav .shell{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-size:15px;font-weight:750;text-decoration:none;white-space:nowrap}.brand:before{content:"";display:inline-block;width:9px;height:9px;background:var(--blue);border-radius:50%;margin-right:9px}.nav-items{display:flex;gap:24px;align-items:center}.nav-items a{font-size:14px;color:var(--muted);text-decoration:none}.nav-items a:hover,.nav-items a[aria-current]{color:var(--blue)}.nav-cta{border:1px solid #bad0ed;border-radius:99px;padding:7px 15px;color:var(--blue)!important}.button{border:0;border-radius:99px;background:var(--blue);color:#fff;text-decoration:none;padding:13px 24px;font-weight:650;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;transition:transform .2s,background .2s,box-shadow .2s}.button:hover{background:var(--blue2);transform:translateY(-2px);box-shadow:0 10px 24px rgba(18,72,142,.16)}.button.secondary{background:#eaf2fc;color:var(--blue)}.button.secondary:hover{background:#dceafa}.button.text{background:transparent;color:var(--blue);padding:10px 0}.button.text:hover{box-shadow:none}.button:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}.eyebrow{font-size:13px;letter-spacing:.15em;font-weight:750;color:var(--blue);margin-bottom:15px}.section-title{font-size:clamp(31px,4.5vw,52px);line-height:1.16;letter-spacing:-.04em;margin-bottom:15px}.section-lead{max-width:680px;color:var(--muted);font-size:18px}.section{padding:100px 0}.section.soft{background:var(--wash)}.grid{display:grid;gap:18px}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}.card h3{font-size:22px;line-height:1.28;margin-bottom:10px}.card p{color:var(--muted);margin-bottom:0}.card-num{font-size:14px;font-weight:750;color:var(--blue);margin-bottom:26px}.card-link{display:inline-block;color:var(--blue);font-weight:650;text-decoration:none;margin-top:22px}.card-link:hover{text-decoration:underline}.tag{display:inline-flex;align-items:center;border-radius:99px;background:#eaf2fc;color:var(--blue);padding:5px 12px;font-size:13px;font-weight:700}.site-footer{background:#101d31;color:#d7e1ee;padding:44px 0}.site-footer .shell{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.site-footer p{margin:0;color:#afbed2;font-size:14px}.site-footer a{color:#d7e1ee;text-decoration:none}.site-footer a:hover{text-decoration:underline}:focus-visible{outline:3px solid #80b4f8;outline-offset:3px}[hidden]{display:none!important}
/* course home */
.home-hero{padding:110px 0 80px;background:radial-gradient(700px 470px at 50% 0%,#eaf2fd,transparent 75%)}.home-hero h1{font-size:clamp(52px,8vw,88px);line-height:1.07;letter-spacing:-.06em;max-width:900px;margin-bottom:26px}.home-hero h1 span{color:var(--blue)}.home-hero .intro{color:var(--muted);font-size:clamp(18px,2.3vw,23px);max-width:710px;line-height:1.7}.home-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:33px}.scene{margin-top:70px;background:linear-gradient(140deg,#101d32,#203957);color:#fff;border-radius:34px;padding:46px 50px;position:relative;overflow:hidden}.scene:after{content:"";position:absolute;width:380px;height:380px;border-radius:50%;border:1px solid rgba(255,255,255,.12);right:-100px;top:-130px;box-shadow:0 0 0 70px rgba(255,255,255,.025),0 0 0 140px rgba(255,255,255,.02)}.scene>*{position:relative;z-index:1}.scene small{color:#9ec4f1;font-size:13px;font-weight:750;letter-spacing:.1em}.scene h2{font-size:clamp(28px,4vw,44px);line-height:1.2;margin:14px 0 32px;letter-spacing:-.03em}.scene-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.scene-step{border:1px solid rgba(255,255,255,.2);border-radius:18px;background:rgba(255,255,255,.07);padding:22px}.scene-step span{display:block;color:#a9c6e7;font-size:14px;margin-bottom:10px}.scene-step strong{font-size:22px}.scene-step p{color:#cad7e7;font-size:14px;margin:10px 0 0}.course-map{counter-reset:stages}.course-card{min-height:290px;display:flex;flex-direction:column}.course-card .card-link{margin-top:auto}.about{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.about-list{display:grid;gap:12px}.about-list div{border-top:1px solid var(--line);padding:15px 0;font-size:16px}.about-list b{color:var(--blue);margin-right:18px}.note{font-size:13px;color:var(--muted);margin-top:18px}
/* workshop */
.work-hero{padding:78px 0 60px;background:radial-gradient(750px 390px at 50% 0%,#eaf2fd,transparent 75%)}.work-hero h1{font-size:clamp(43px,7vw,72px);letter-spacing:-.055em;line-height:1.08;margin-bottom:20px}.work-hero .section-lead{font-size:19px}.stage-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:38px}.stage-nav a{border-top:2px solid #ced9e8;padding:13px 6px;text-decoration:none;font-size:13px;color:var(--muted)}.stage-nav a b{display:block;font-size:16px;color:var(--ink)}.stage-nav a.active{border-color:var(--blue)}.stage-nav a.active b{color:var(--blue)}.stage{padding:76px 0;border-top:1px solid var(--line);scroll-margin-top:70px}.stage-header{display:flex;gap:20px;justify-content:space-between;align-items:flex-start;margin-bottom:30px}.stage h2{font-size:clamp(30px,4vw,44px);letter-spacing:-.035em;line-height:1.15;margin-bottom:10px}.stage-desc{font-size:17px;color:var(--muted);max-width:680px;margin-bottom:0}.stage-counter{white-space:nowrap;color:var(--blue);font-weight:750;font-size:15px}.work-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:20px;align-items:start}.work-panel{border:1px solid var(--line);border-radius:var(--radius);padding:28px;background:#fff}.work-panel h3{font-size:21px;margin-bottom:16px}.document{background:#f7f9fc;border:1px solid var(--line);border-radius:16px;padding:24px;margin:20px 0}.document-top{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:16px}.document strong{font-size:21px;line-height:1.45}.document p{color:var(--muted);margin:10px 0 0}.field-grid{display:grid;grid-template-columns:1fr 1fr 130px;gap:12px;margin:22px 0 16px}.field label,.field-grid label{display:block;font-size:13px;font-weight:700;color:var(--muted);margin-bottom:7px}.field select,.field input,.field-grid select,.field-grid input{width:100%;border:1px solid #bfcad8;border-radius:11px;padding:11px 12px;color:var(--ink);background:#fff;min-height:46px}.field-grid input{text-align:right}.action-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.feedback{border-radius:12px;padding:12px 16px;font-size:14px;margin-top:16px;background:#eef4fc;color:#254c7e}.feedback.good{background:#e7f6ef;color:#116143}.feedback.bad{background:#fff0f1;color:#a52c3b}.feedback:empty{display:none}.ledger-list{display:grid;gap:10px;max-height:440px;overflow:auto}.ledger-item{display:grid;grid-template-columns:32px 1fr auto;gap:12px;align-items:center;border-bottom:1px solid var(--line);padding:11px 0;font-size:14px}.ledger-item span:first-child{color:var(--blue);font-weight:750}.ledger-item small{display:block;color:var(--muted)}.ledger-item strong{white-space:nowrap}.empty{background:var(--wash);border-radius:13px;padding:20px;color:var(--muted);font-size:14px}.metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0}.metric{background:#edf4fc;padding:17px;border-radius:14px}.metric small{display:block;color:var(--muted);font-size:12px}.metric strong{font-size:22px;color:var(--blue)}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:16px}table{width:100%;border-collapse:collapse;min-width:520px;font-size:14px}th,td{padding:11px 15px;text-align:left;border-bottom:1px solid var(--line)}th{background:#f4f7fa;color:var(--muted);font-weight:650}td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}tr:last-child td{border-bottom:0}tr.total{background:#ecf3fb;font-weight:750}.audit-cue{background:#152640;color:#fff;border-radius:22px;padding:28px;margin-bottom:20px}.audit-cue strong{font-size:24px}.audit-cue p{color:#c5d5e8;margin:10px 0 0}.audit-line.badline{background:#fff4f4}.result-banner{border-radius:18px;background:#eaf7ef;color:#126946;padding:24px;font-size:17px;font-weight:650}.result-banner.pending{background:#eef4fc;color:#315b8b}.report-sheet{border:1px solid var(--line);border-radius:var(--radius);padding:36px;background:#fff}.report-top{display:flex;justify-content:space-between;gap:20px;align-items:start;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:20px}.report-top h3{font-size:28px;margin:0}.report-details{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.report-details div{background:var(--wash);border-radius:14px;padding:18px}.report-details small{display:block;color:var(--muted)}.report-details strong{font-size:22px}.report-advice{background:#f5f8fd;border-radius:15px;padding:22px;margin-top:20px}.report-advice p{margin:0}.teacher-bar{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}.quiet{font-size:13px;color:var(--muted)}
@media(max-width:860px){.grid.three,.scene-flow{grid-template-columns:1fr}.grid.two,.about,.work-grid{grid-template-columns:1fr}.scene{padding:32px}.stage-nav{grid-template-columns:repeat(2,1fr)}.field-grid{grid-template-columns:1fr 1fr}.field-grid .amount-field{grid-column:span 2}.nav-items{gap:13px}.nav-items a{font-size:13px}}@media(max-width:600px){.shell{width:min(100% - 30px,1120px)}.site-nav .shell{min-height:62px}.nav-items a:not(.nav-cta){display:none}.home-hero{padding:76px 0 60px}.scene{margin-top:45px;border-radius:25px}.section{padding:74px 0}.stage{padding:62px 0}.stage-header{display:block}.stage-counter{margin-top:14px}.work-panel{padding:20px}.metric-row,.report-details{grid-template-columns:1fr}.report-sheet{padding:23px}.report-top{display:block}.field-grid{grid-template-columns:1fr}.field-grid .amount-field{grid-column:auto}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button{transition:none}.button:hover{transform:none}}
@media print{.site-nav,.site-footer,.no-print,.teacher-bar,.work-hero,.stage:not(#report){display:none!important}body{background:#fff}.shell{width:100%}.report-sheet{border:0;padding:0}.stage{border:0;padding:0}.section-title{font-size:30px}}