:root{--navy:#08244a;--orange:#ff5917;--ink:#253346;--muted:#718092;--line:#e6ebf0;--blue:#f1f7fb;--soft:#f8fafc}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:104px}body{margin:0;background:#fff;color:var(--ink);font-family:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;font-size:15px;line-height:1.75}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #89b5d7;outline-offset:4px}button{cursor:pointer}button[hidden],[hidden]{display:none!important}
.site-header{height:76px;padding:0 36px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(255,255,255,.98);position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:20px}.brand img{object-fit:contain;width:58px;height:auto}.brand-copy{border-left:1px solid var(--line);padding-left:20px;display:grid;gap:1px}.brand-copy b{color:var(--navy);font-size:14px;letter-spacing:.12em}.brand-copy>span{font-size:12px;color:var(--muted);letter-spacing:.08em}.site-header nav{display:flex;gap:28px;font-size:13px;color:#647184}.site-header a:hover{color:var(--orange)}
.layout{max-width:1640px;margin:auto;display:grid;grid-template-columns:232px minmax(0,1fr);padding:0 36px}.sidebar{position:sticky;top:76px;align-self:start;height:calc(100vh - 76px);padding:43px 25px 24px 0;border-right:1px solid var(--line)}.rail-eyebrow{margin:0 0 8px;font-size:11px;letter-spacing:.16em;color:var(--muted)}.rail-home{font-size:17px;font-weight:650;color:var(--navy);display:block}.rail-home>span{font-size:11px;color:#8995a3;margin-left:8px;font-weight:400}.rail-line{height:1px;background:var(--line);margin:26px 0}.rail-label{font-size:11px;color:var(--muted);letter-spacing:.1em;margin:0 0 10px}.sidebar nav{display:grid;gap:5px}.sidebar nav a{padding:10px 7px;font-size:13px}.sidebar nav a>span{display:inline-block;width:30px;font-size:11px;color:#a2acb8}.sidebar nav a:hover{color:var(--orange);background:#fff8f4;border-radius:4px}.rail-note{border-top:1px solid var(--line);margin-top:30px;padding-top:25px;font-size:12px;color:var(--navy)}.tiny-dot{display:inline-block;width:6px;height:6px;border-radius:100%;background:var(--orange);margin-right:5px}.rail-note p{font-size:12px;line-height:1.9;color:var(--muted);margin-top:8px}.download{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-top:26px}.download:hover{color:var(--orange)}main{min-width:0;padding:24px 0 0 48px;max-width:1230px}.preview-notice{font-size:11px;letter-spacing:.03em;color:#83909e;display:flex;align-items:center;gap:10px}.preview-notice>span{border:1px solid #f1d7c7;background:#fffaf7;padding:1px 7px;border-radius:3px;color:#a76033}
.intro{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:38px;align-items:center;padding:43px 0 38px}.eyebrow{font-size:10px;font-weight:650;letter-spacing:.15em;color:var(--orange);margin:0 0 17px}.eyebrow>span{color:#cbd2db;margin:0 10px}h1{color:var(--navy);font-size:clamp(29px,2.7vw,42px);line-height:1.3;letter-spacing:-.035em;font-weight:650;margin:0}h1>span{display:block;font-size:clamp(25px,2.35vw,36px);font-weight:550;letter-spacing:.01em;line-height:1.45;margin-top:12px}.intro-description{font-size:14px;color:#657488;line-height:1.95;margin:20px 0}.intro-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:25px}.primary{font-size:13px;background:var(--navy);color:white;padding:11px 17px;border-radius:5px;display:inline-flex;gap:24px;align-items:center}.primary:hover{background:#133962}.intro-actions>span{font-size:11px;color:var(--muted)}.first-task{background:var(--blue);padding:24px 25px 17px;border:1px solid #e4eef5;border-radius:8px;position:relative}.first-task:before{content:"";position:absolute;top:23px;left:-1px;width:3px;height:23px;background:var(--orange)}.first-task-top{display:flex;align-items:center;justify-content:space-between}.mini-kicker{font-size:10px;letter-spacing:.08em;color:#627d94}.file-index{font-size:9px;letter-spacing:.1em;color:#96a9ba}.first-task h2{font-size:21px;color:var(--navy);font-weight:550;line-height:1.6;margin:13px 0 5px}.first-task>p{font-size:12px;color:#71869a;margin:0}.file-flow{display:flex;align-items:center;justify-content:space-between;margin:22px 0}.file-sheet{background:white;width:115px;min-height:132px;border:1px solid #dce5ee;border-radius:3px;padding:12px;box-shadow:0 4px 10px #24486806;transform:rotate(-3deg)}.file-sheet.output{transform:rotate(3deg)}.file-tab{display:inline-block;color:#94a2b2;font-size:8px;letter-spacing:.05em}.file-sheet strong{display:block;font-size:12px;font-weight:550;color:var(--navy);margin:6px 0 10px}.file-sheet i{display:block;width:100%;height:3px;background:#e6edf3;margin:8px 0}.file-sheet .short-line{width:65%}.file-sheet>div{font-size:9px;margin-top:4px;color:#648096}.flow-arrow{color:var(--orange);font-size:24px;font-weight:300}.lesson-jump{font-size:11px;display:flex;justify-content:space-between;border-top:1px solid #dfe9f1;padding-top:12px;color:#49647d}.lesson-jump:hover{color:var(--orange)}.learning-principles{display:flex;gap:35px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:15px 0;color:#718092;font-size:12px}.learning-principles b{color:var(--orange);font-weight:500;font-size:10px;margin-right:9px}
.catalog-heading{display:flex;align-items:end;justify-content:space-between;gap:15px;margin:39px 0 23px}.catalog-heading .eyebrow{margin-bottom:7px}.catalog-heading h2{font-size:24px;font-weight:600;color:var(--navy);margin:0}.catalog-heading p:last-child{font-size:13px;color:var(--muted);margin:6px 0 0}.total{white-space:nowrap;font-size:11px;color:var(--muted);padding-bottom:2px}.total>span{color:#c9d1da;margin:0 8px}.catalog-tools{display:flex;align-items:center;justify-content:space-between;gap:14px;padding-bottom:14px;border-bottom:1px solid var(--line)}.filters{display:flex;gap:4px;flex-wrap:wrap}.filters button{border:0;background:white;color:#708092;font-size:12px;padding:7px 12px;border-radius:4px}.filters button[aria-pressed="true"]{background:var(--navy);color:#fff}.filters button:hover:not([aria-pressed="true"]){background:var(--soft)}.search{display:flex;align-items:center;gap:7px;border:1px solid var(--line);border-radius:5px;padding:7px 10px;max-width:245px}.search svg{fill:none;stroke:#8c99a9;stroke-width:1.5;flex-shrink:0}.search input{border:0;outline:none;min-width:0;width:100%;font-size:11px;color:var(--ink);background:transparent}.search input::placeholder{color:#939eab}.search-status{font-size:10px;color:#8a97a6;margin:12px 0 4px}.course-group{margin:28px 0 35px;scroll-margin-top:98px}.group-heading{display:flex;align-items:center;gap:14px;margin-bottom:16px}.group-heading>span{font-size:26px;font-weight:300;letter-spacing:-.02em;color:#d1dde7}.group-heading h3{font-size:17px;color:var(--navy);font-weight:600;margin:0}.group-heading p{font-size:11px;color:var(--muted);margin:2px 0 0}.group-heading>small{margin-left:auto;color:#94a0ae;font-size:10px}.lesson-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.lesson{border:1px solid var(--line);border-radius:6px;background:white;align-self:start;scroll-margin-top:100px}.lesson:hover{border-color:#b6c9d9}.lesson[open]{border-color:#bfd2e1;background:#fcfdff}.lesson .lesson-main{list-style:none;display:flex;gap:12px;padding:18px 16px;cursor:pointer}.lesson .lesson-main::-webkit-details-marker{display:none}.lesson-num{font-size:11px;color:var(--orange);padding-top:3px;flex-shrink:0}.lesson-copy{display:block;min-width:0;flex:1}.lesson-copy>strong{display:block;font-size:13px;line-height:1.6;font-weight:600;color:var(--navy)}.lesson-copy>span{display:block;font-size:11px;line-height:1.85;color:#7d8999;margin-top:5px}.lesson-copy small{font-size:10px;color:#a0aab5;display:block;margin-top:13px}.lesson-copy small b{color:#698095;font-weight:400;display:block}.plus{color:#92a5b6;font-size:15px;line-height:1.5}.lesson[open] .plus{transform:rotate(45deg)}.lesson-detail{padding:0 18px 16px 40px;font-size:12px;border-top:1px solid var(--line);margin:0 16px}.lesson-detail h4{font-size:12px;font-weight:500;color:var(--navy);margin:15px 0 8px}.lesson-detail ol{padding-left:18px;color:#637488}.lesson-detail p{color:#68798b;font-size:11px}.lesson-detail .draft-note{border-top:1px solid var(--line);padding-top:10px;color:#9b875e;font-size:10px}.empty{text-align:center;background:var(--soft);padding:30px;margin:20px 0;color:var(--muted);font-size:13px}.empty button{color:var(--navy);background:white;border:1px solid var(--line);border-radius:4px;padding:8px 16px;font-size:12px}
.about{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:45px;padding:30px 0;border-top:1px solid var(--line);margin-top:35px}.about .eyebrow{margin-bottom:10px}.about h2{font-size:22px;font-weight:550;color:var(--navy);margin:0}.about p{font-size:13px;color:#758293;margin:12px 0}.about .about-note{font-size:11px;color:#9aa4b0;line-height:1.9}.related{border-left:1px solid var(--line);padding:10px 0 0 25px}.related>span{font-size:11px;color:#8996a4}.related>a{display:block;color:var(--navy);font-size:15px;margin:10px 0}.related>a:hover{color:var(--orange)}.related .official{font-size:11px;color:#8a97a5;margin-top:25px}footer{border-top:1px solid var(--line);padding:20px 0 28px;display:flex;justify-content:space-between;font-size:11px;color:#8b96a5}
@media(min-width:1700px){.intro{gap:70px;grid-template-columns:minmax(0,1fr) 360px}.first-task{padding:27px 32px 18px}.file-sheet{width:125px}}
@media(max-width:1200px){.layout{grid-template-columns:190px minmax(0,1fr);padding:0 24px}.sidebar{padding-right:18px}main{padding-left:30px}.intro{grid-template-columns:minmax(0,1fr) 280px;gap:24px}.first-task{padding:20px}.file-sheet{width:100px}.intro-actions>span{font-size:10px}.catalog-tools{align-items:start;flex-direction:column}.search{max-width:100%;width:100%}.desktop-br{display:none}.about{grid-template-columns:minmax(0,1fr) 230px;gap:20px}.filters button{padding:7px 11px}}
@media(max-width:960px){.layout{display:block;max-width:850px}.sidebar{display:none}main{padding-left:0}.intro{grid-template-columns:minmax(0,1fr) 290px}.catalog-tools{flex-direction:row;align-items:center}.search{width:220px}.intro-copy h1{font-size:33px}h1>span{font-size:29px}.site-header{padding:0 24px}.site-header nav{gap:18px}}
@media(max-width:680px){html{scroll-padding-top:88px}.site-header{height:65px;padding:0 20px}.brand{gap:12px}.brand-copy{padding-left:12px}.brand-copy b{font-size:12px}.brand-copy>span{font-size:10px}.brand img{width:48px}.site-header nav{font-size:11px}.site-header nav a:last-child{display:none}.layout{padding:0 20px}main{padding-top:17px}.preview-notice{font-size:10px;gap:7px}.intro{display:block;padding:32px 0 25px}.intro-copy h1{font-size:32px}h1>span{font-size:28px}.eyebrow{font-size:9px}.intro-description{font-size:13px;margin:16px 0}.intro-actions{gap:12px;margin:20px 0 26px}.first-task{max-width:430px;padding:21px 24px 17px}.first-task h2{font-size:19px}.file-flow{justify-content:start;gap:22px;margin:20px 0}.file-sheet{width:112px;min-height:121px}.first-task>p{font-size:11px}.learning-principles{gap:9px;justify-content:space-between;font-size:10px}.learning-principles b{display:block;margin:0 0 2px}.catalog-heading{margin-top:28px;align-items:start}.catalog-heading h2{font-size:22px}.catalog-heading p:last-child{font-size:12px}.total{font-size:10px;padding-top:22px}.total>span{margin:0 2px}.catalog-tools{display:block}.filters{gap:2px;margin-bottom:12px}.filters button{font-size:11px;padding:7px 10px}.search{width:100%;max-width:none}.lesson-grid{grid-template-columns:1fr}.lesson .lesson-main{padding:17px 15px}.lesson-copy>strong{font-size:14px}.lesson-copy>span{font-size:12px}.lesson-copy small b{display:inline;margin-left:7px}.course-group{margin-bottom:29px}.group-heading p{font-size:11px}.about{display:block}.related{border-left:0;border-top:1px solid var(--line);padding:20px 0 0;margin-top:23px}.related>a br{display:none}footer{font-size:10px}.lesson-detail{padding-left:15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* 依使用者參考：緊湊產品介紹、三張入口圖卡、左圖右文課程清單。 */
.intro{grid-template-columns:minmax(0,1fr) 350px;gap:32px;padding:28px 0 26px;align-items:center}.intro h1{font-size:36px;line-height:1.25}.intro h1>span{font-size:25px;line-height:1.4;margin-top:5px}.intro .eyebrow{margin-bottom:12px}.intro-description{margin:12px 0 0;font-size:14px}.product-reference{margin:0}.product-reference img{display:block;width:100%;height:auto;border-radius:9px}.product-reference figcaption{font-size:10px;color:#8c99a6;text-align:right;margin-top:5px}.product-reference a{text-decoration:underline}.featured{margin:5px 0 32px}.featured>h2{font-size:23px;color:var(--navy);font-weight:600;margin:0 0 17px}.featured-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.entry-card{display:block;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;transition:box-shadow .2s,border-color .2s}.entry-card:hover{border-color:#acc3d4;box-shadow:0 5px 18px #1234520a}.entry-card>img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}.entry-card>div{padding:19px 20px 16px}.entry-kicker{font-size:11px;color:#8697a6}.entry-card h3{font-size:18px;line-height:1.5;color:var(--navy);font-weight:550;margin:7px 0}.entry-card p{font-size:13px;line-height:1.8;color:#768596;margin:0 0 15px}.entry-link{display:flex;justify-content:space-between;font-size:11px;color:#8a9bab}.entry-link b{color:var(--orange);font-weight:400}.catalog-heading{margin-top:30px}.lesson-grid{grid-template-columns:1fr;gap:14px}.lesson{overflow:hidden;border-radius:10px}.lesson .lesson-main{padding:0;align-items:center;gap:20px;min-height:142px}.course-thumb{display:block;width:205px;align-self:stretch;height:auto;object-fit:cover;flex-shrink:0}.lesson-num{font-size:12px;padding:0}.lesson-copy{padding:16px 0}.lesson-copy>strong{font-size:18px;font-weight:550}.lesson-copy>span{font-size:13px;margin-top:6px}.lesson-copy small{font-size:11px;margin-top:10px}.lesson-copy small b{display:inline;margin-left:10px}.plus{margin-right:22px}.lesson-detail{margin-left:235px;padding:0 14px 15px}.group-heading h3{font-size:19px}.group-heading p{font-size:12px}.sidebar nav a{font-size:14px}
@media(max-width:1200px){.intro{grid-template-columns:minmax(0,1fr) 260px;gap:24px}.intro h1{font-size:30px}.intro h1>span{font-size:22px}.featured-grid{gap:13px}.entry-card>div{padding:14px}.entry-card h3{font-size:16px}.course-thumb{width:175px}.lesson .lesson-main{gap:14px}.lesson-copy>strong{font-size:16px}.lesson-detail{margin-left:190px}}
@media(max-width:680px){.intro{display:block;padding:27px 0 20px}.intro h1{font-size:30px}.intro h1>span{font-size:24px}.product-reference{max-width:350px;margin:20px 0 0}.intro-description{font-size:13px}.featured-grid{grid-template-columns:1fr;gap:18px}.featured>h2{font-size:21px;margin-bottom:13px}.entry-card>div{padding:18px 20px}.entry-card h3{font-size:19px}.entry-card p{font-size:14px}.course-thumb{width:104px;object-fit:contain;background:#e6f0f6}.lesson .lesson-main{gap:10px;min-height:156px}.lesson-num{display:none}.lesson-copy{padding:13px 0}.lesson-copy>strong{font-size:14px}.lesson-copy>span{font-size:11px;line-height:1.7}.lesson-copy small{font-size:10px}.lesson-copy small b{display:block;margin-left:0}.plus{margin-right:10px;font-size:13px}.lesson-detail{margin:0 13px;padding:0 5px 12px}}

/* 課程入口採完整可用寬度，保留置中上限與窄螢幕留白。 */
.layout{display:block;max-width:1328px;padding:0 40px;margin:0 auto}
main{max-width:none;width:100%;padding:24px 0 0}
.intro{grid-template-columns:minmax(0,1fr) minmax(320px,480px);gap:48px;padding:30px 0 32px}
.intro h1{font-size:40px}.intro h1>span{font-size:28px}
.featured-grid{gap:24px}.entry-card.lesson-jump{padding-top:0}
.catalog-meta{display:grid;justify-items:end;gap:8px;flex-shrink:0}
.framework-download{font-size:12px;color:var(--navy)}.framework-download:hover{color:var(--orange)}
@media(max-width:960px){.layout{padding:0 28px}.intro{grid-template-columns:minmax(0,1fr) minmax(260px,40%);gap:28px}.intro h1{font-size:32px}.intro h1>span{font-size:25px}.featured-grid{gap:16px}}
@media(max-width:680px){.layout{padding:0 20px}main{padding-top:17px}.intro{display:block;padding:26px 0}.intro h1{font-size:30px}.intro h1>span{font-size:24px}.product-reference{max-width:100%;margin-top:22px}.catalog-heading{flex-wrap:wrap}.catalog-meta{display:flex;align-items:center;justify-content:space-between;width:100%}.catalog-meta .total{padding-top:0}.featured-grid{gap:18px}}

/* 課程卡使用原生連結，圖片、標題與閱讀提示皆直接進入教材。 */
.lesson .lesson-main{display:flex}.course-cta{flex-shrink:0;margin-right:22px;color:var(--orange);font-size:12px;white-space:nowrap}.lesson:hover .lesson-copy>strong{text-decoration:underline}@media(max-width:680px){.lesson .lesson-main{position:relative;padding-bottom:30px}.course-cta{position:absolute;bottom:9px;right:0;margin-right:14px;font-size:11px}}