:root{--ink:#13251c;--paper:#f3f0e8;--white:#fffdf7;--orange:#f05727;--acid:#d5ff46;--line:rgba(19,37,28,.22);--serif:"Songti SC","STSong","SimSun",serif;--sans:"PingFang SC","Microsoft YaHei",sans-serif;--mono:Consolas,"SFMono-Regular",monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.7}.course-header{min-height:74px;padding:0 5vw;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);font-size:13px}.course-brand{display:flex;align-items:center;gap:10px;color:inherit;text-decoration:none;font-weight:700}.course-brand b{display:grid;place-items:center;width:28px;height:28px;background:var(--ink);color:var(--acid);font-family:var(--mono)}.course-nav{display:flex;gap:24px}.course-nav a,.course-header>a{color:inherit;text-decoration:none}.course-header>a:last-child{border-bottom:1px solid currentColor}.course-shell{max-width:1320px;margin:auto;padding:0 5vw}.course-hero{min-height:610px;padding:11vh 0 8vh;display:grid;grid-template-columns:1.35fr .65fr;gap:7vw;align-items:end;border-bottom:2px solid var(--ink)}.course-kicker,.course-code{font:700 11px/1.4 var(--mono);letter-spacing:.11em;text-transform:uppercase;color:var(--orange)}.course-hero h1,.course-title{font:600 clamp(3.3rem,7vw,7.4rem)/.96 var(--serif);letter-spacing:-.07em;margin:24px 0}.course-hero h1 em,.course-title em{font-style:normal;color:var(--orange)}.course-hero p{font-size:clamp(1rem,1.5vw,1.25rem);max-width:760px}.course-summary{border:1px solid var(--ink);background:var(--white);padding:26px}.course-summary strong{display:block;font:600 2.2rem/1.1 var(--serif);margin:25px 0 12px}.course-summary span{font:700 11px var(--mono)}.course-section{padding:8vh 0}.course-section h2{font:600 clamp(2.5rem,5vw,5rem)/1 var(--serif);letter-spacing:-.055em;margin:0 0 34px}.course-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-left:1px solid var(--line)}.course-card{min-height:510px;padding:32px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--white);display:flex;flex-direction:column}.course-card:nth-child(2){background:#e7efc5}.course-card h2{font:600 clamp(2.2rem,4vw,4.3rem)/1.02 var(--serif);margin:65px 0 18px}.course-card p{max-width:520px}.course-tags{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0}.course-tags span{background:#e7e1d4;padding:5px 8px;font:700 10px var(--mono)}.course-card a,.course-button{margin-top:auto;background:var(--ink);color:var(--paper);padding:15px 18px;text-decoration:none;font-weight:700;display:flex;justify-content:space-between;gap:20px}.course-path{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ink);border-left:1px solid var(--ink)}.course-path article{padding:22px;min-height:220px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink)}.course-path h3{font:600 1.6rem/1.15 var(--serif);margin:45px 0 10px}.course-callout{margin:35px 0 80px;padding:7vh 6vw;background:var(--ink);color:var(--paper);display:grid;grid-template-columns:1.3fr .7fr;gap:7vw;align-items:end}.course-callout h2{font:600 clamp(2.5rem,5vw,5rem)/1 var(--serif);margin:0}.course-actions{display:flex;gap:10px;flex-wrap:wrap}.course-actions .course-button{margin:0;border:1px solid currentColor}.course-actions .primary{background:var(--orange);color:#1b160f;border-color:var(--orange)}.course-footer{background:var(--ink);color:var(--paper);padding:34px 5vw;display:flex;justify-content:space-between;gap:20px;font:11px var(--mono)}
.detail-hero{padding:9vh 0 7vh;border-bottom:2px solid var(--ink)}.detail-hero .course-title{max-width:1100px}.detail-lede{max-width:800px;font-size:clamp(1rem,1.5vw,1.22rem)}.detail-facts{display:grid;grid-template-columns:repeat(4,1fr);margin-top:40px;border-top:1px solid var(--ink);border-left:1px solid var(--ink)}.detail-facts div{padding:18px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink)}.detail-facts b{display:block;font:600 1.4rem var(--serif)}.detail-facts span{font:11px var(--mono)}.detail-grid{display:grid;grid-template-columns:250px 1fr;gap:6vw;padding:7vh 0}.detail-index{position:sticky;top:20px;align-self:start;border-top:2px solid var(--ink)}.detail-index a{display:block;padding:10px 0;border-bottom:1px solid var(--line);color:inherit;text-decoration:none;font-size:13px}.detail-content section{padding-bottom:55px;margin-bottom:55px;border-bottom:1px solid var(--line)}.detail-content h2{font:600 clamp(2.2rem,4vw,4rem)/1 var(--serif);letter-spacing:-.05em;margin:0 0 26px}.module-grid,.outcome-grid,.tutorial-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.module-grid article,.outcome-grid article,.tutorial-grid article{padding:22px;border:1px solid var(--line);background:var(--white)}.module-grid h3,.outcome-grid h3,.tutorial-grid h3{font:600 1.55rem/1.2 var(--serif);margin:0 0 10px}.module-grid span,.tutorial-grid span{font:700 10px var(--mono);color:var(--orange)}.schedule{border-top:1px solid var(--ink)}.schedule article{display:grid;grid-template-columns:150px 1fr 1.2fr;gap:24px;padding:22px 0;border-bottom:1px solid var(--line)}.schedule strong{font:600 1.3rem var(--serif)}.review-boundary{padding:28px;background:var(--acid);border-left:8px solid var(--ink)}.source-note{padding:25px;background:var(--ink);color:var(--paper)}.source-note strong{color:var(--acid)}
@media(max-width:900px){.course-hero,.course-callout,.detail-grid{grid-template-columns:1fr}.course-grid{grid-template-columns:1fr}.course-path,.detail-facts{grid-template-columns:1fr 1fr}.detail-index{display:none}.course-nav{display:none}}@media(max-width:560px){.course-shell{padding:0 5vw}.course-hero{min-height:auto;padding-top:7vh}.course-hero h1,.course-title{font-size:2.85rem}.course-grid,.course-path,.detail-facts,.module-grid,.outcome-grid,.tutorial-grid{grid-template-columns:1fr}.course-card{min-height:420px}.schedule article{grid-template-columns:1fr;gap:8px}.course-callout{margin-bottom:40px}.course-actions,.course-button{width:100%}.course-footer{flex-direction:column}}