:root{--paper:#f6f3ec;--card:#fffdf8;--ink:#102d3d;--navy:#183f59;--blue:#315f7e;--line:#d8d2c7;--muted:#68757c;--warm:#c98245;--shadow:0 18px 42px rgba(24,49,62,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:"Noto Sans KR",sans-serif;-webkit-font-smoothing:antialiased}.topbar{position:sticky;z-index:20;top:0;height:68px;padding:0 max(28px,calc((100vw - 1180px)/2));display:flex;align-items:center;justify-content:space-between;background:rgba(246,243,236,.94);border-bottom:1px solid rgba(16,45,61,.12);backdrop-filter:blur(14px)}.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-size:11px;font-weight:800;letter-spacing:.18em;text-decoration:none}.brand-mark{width:34px;height:34px;display:grid;place-items:center;color:#fff;background:var(--navy);border-radius:9px;font:700 18px "Source Serif 4",serif}.course-label{font-size:10px;font-weight:800;letter-spacing:.18em;color:var(--blue)}main{width:min(1180px,calc(100% - 40px));margin:auto}.library-hero{min-height:480px;padding:96px 5% 76px;display:grid;grid-template-columns:1.35fr 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110px}.catalog-head{margin:0 2% 44px;display:flex;align-items:end;justify-content:space-between;gap:40px}.eyebrow{display:block;margin-bottom:8px;color:var(--blue);font-size:10px;font-weight:800;letter-spacing:.19em}.catalog-head h2{margin:0;font:600 clamp(38px,5vw,58px)/1 "Source Serif 4",serif}.catalog-head p{margin:0;color:var(--muted);font-size:12px;line-height:1.9;text-align:right}.reading-list{display:flex;flex-direction:column;gap:20px}.reading-card{min-height:290px;display:grid;grid-template-columns:minmax(330px,43%) 1fr;color:inherit;background:var(--card);border:1px solid var(--line);border-radius:24px;overflow:hidden;text-decoration:none;box-shadow:0 2px 0 rgba(16,45,61,.02);transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease}.reading-card:hover{transform:translateY(-4px);border-color:#a9c3cc;box-shadow:var(--shadow)}.reading-card:focus-visible{outline:3px solid var(--warm);outline-offset:4px}.card-image{min-height:290px;position:relative;overflow:hidden;background:var(--navy)}.card-image:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(12,36,52,.12),transparent 60%)}.card-image img{width:100%;height:100%;display:block;object-fit:cover;transition:transform .55s ease}.reading-card:hover img{transform:scale(1.035)}.unit-badge{position:absolute;z-index:1;top:22px;left:22px;padding:8px 11px;color:#fff;background:rgba(12,36,52,.78);border:1px solid rgba(255,255,255,.38);border-radius:999px;font-size:9px;font-weight:800;letter-spacing:.17em;backdrop-filter:blur(8px)}.card-body{padding:30px clamp(28px,4vw,52px);display:flex;flex-direction:column}.card-meta{display:flex;align-items:center;justify-content:space-between;gap:20px;color:var(--blue);font-size:10px;font-weight:800;letter-spacing:.08em}.card-meta span:last-child{color:#899398}.card-body h3{margin:14px 0 10px;font:600 clamp(30px,3.4vw,46px)/1.06 "Source Serif 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b{display:inline-grid;width:26px;height:26px;margin-left:7px;place-items:center;color:#fff;background:var(--navy);border-radius:50%;font-size:14px;transition:transform .25s ease}.reading-card:hover .enter b{transform:translateX(3px)}footer{width:min(1180px,calc(100% - 40px));margin:auto;padding:30px 2% 42px;display:flex;justify-content:space-between;border-top:1px solid var(--line);color:var(--muted);font-size:9px;letter-spacing:.14em}footer strong{color:var(--ink)}
@media (min-width:900px){.reading-card:nth-child(even){grid-template-columns:1fr minmax(330px,43%)}.reading-card:nth-child(even) .card-image{grid-column:2}.reading-card:nth-child(even) .card-body{grid-column:1;grid-row:1}.reading-card:nth-child(even) .card-image:after{background:linear-gradient(270deg,rgba(12,36,52,.12),transparent 60%)}}
@media (max-width:760px){.topbar{height:60px;padding:0 20px}.course-label{display:none}main{width:min(100% - 24px,620px)}.library-hero{min-height:460px;padding:88px 14px 54px;display:block}.hero-kicker{top:54px;left:14px}h1{font-size:clamp(55px,17vw,78px)}.hero-copy{margin-top:50px}.hero-copy>p{font-size:13px}.hero-stats{gap:17px}.hero-stats b{font-size:23px}.catalog{padding:62px 0 80px}.catalog-head{margin:0 3px 30px;display:block}.catalog-head p{margin-top:18px;text-align:left}.reading-card{display:block;border-radius:19px}.card-image{min-height:0;aspect-ratio:16/10}.card-body{padding:25px 23px 27px}.card-body h3{font-size:32px}.card-meta span:last-child{display:none}.card-body>p{font-size:11px}.grammar{align-items:flex-start}.grammar strong{font-size:12px}.card-foot{margin-top:24px}.progress{width:48%}footer{display:block;line-height:2}footer span{display:block}}
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