:root{--blue:#0585B0;--ink:#153844;--muted:#4d6c78;--paper:#f7fcfc;--line:#d4e7e9;--white:#fff;--green:#3BAC56;--purple:#B984C6}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif;color:var(--ink);background:var(--paper);line-height:1.65}
button,a{font:inherit}
a{color:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:1rem;z-index:100}
.skip-link:focus{left:1rem}
.site-header{height:72px;padding:0 clamp(20px,4vw,64px);display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
.brand{display:flex;align-items:center;gap:.65rem;text-decoration:none;color:var(--blue);font-weight:800;letter-spacing:.08em;font-size:1.12rem}
.brand-mark{display:grid;place-items:center;width:35px;height:35px;border:2px solid var(--blue);border-radius:50%;font-size:1.7rem;line-height:1}
.site-header nav a{text-decoration:none;font-size:.92rem;font-weight:700;color:var(--blue)}
.site-header nav a:hover,.text-link:hover{text-decoration:underline}
.site-footer{display:flex;gap:1rem;justify-content:space-between;padding:30px clamp(20px,4vw,64px);font-size:.78rem;color:var(--muted);border-top:1px solid var(--line);background:#fff}
.container{width:min(1120px,calc(100% - 40px));margin:auto}
.narrow{width:min(800px,calc(100% - 40px));margin:auto}
.hero{min-height:min(780px,calc(100svh - 72px));background:linear-gradient(90deg,rgba(2,61,86,.78),rgba(0,85,120,.45) 52%,rgba(5,133,176,.05)),url('assets/cover.webp') center center/cover;display:flex;align-items:center;color:#fff}
.hero-inner{width:min(1120px,calc(100% - 40px));margin:auto;padding:90px 0}
.eyebrow{display:inline-block;text-transform:uppercase;font-size:.78rem;letter-spacing:.2em;font-weight:800;color:var(--blue);margin-bottom:1rem}
.hero .eyebrow{color:#d4f6ff}
h1,h2,h3,p{margin-top:0}
.hero h1{font-size:clamp(3.3rem,8vw,6.8rem);letter-spacing:.1em;line-height:1.12;margin:0 0 1.2rem;text-shadow:0 4px 25px rgba(0,31,45,.25)}
.hero p{font-size:clamp(1.1rem,2.1vw,1.38rem);max-width:550px;margin-bottom:2rem;color:#effcff}
.hero small{display:block;margin-top:1.2rem;color:#e3f6fb}
.button{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;min-height:48px;padding:.7rem 1.35rem;border-radius:999px;border:1.5px solid var(--blue);text-decoration:none;background:var(--blue);color:#fff;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s}
.button:hover{transform:translateY(-2px);box-shadow:0 7px 20px rgba(5,133,176,.18)}
.button:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid #e2ad35;outline-offset:3px}
.button-light{background:#fff;border-color:#fff;color:var(--blue)}
.button-outline{background:transparent;color:var(--blue)}
.button-soft{background:#edf8fa;color:var(--blue);border-color:#edf8fa}
.intro-strip{padding:58px 0;background:#e7f5f5}
.intro-strip .container{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}
.intro-strip h2{font-size:clamp(1.7rem,3vw,2.3rem);line-height:1.3;margin-bottom:.6rem}
.intro-strip p{margin:0;color:var(--muted)}
.intro-image{width:100%;max-height:370px;object-fit:cover;object-position:center 30%;border-radius:28px;box-shadow:0 20px 45px rgba(7,82,102,.12)}
.page-head{padding:72px 0 40px;text-align:center;background:linear-gradient(#e9f9f8,var(--paper))}
.page-head h1{font-size:clamp(2.4rem,5vw,4rem);line-height:1.2;margin-bottom:.8rem}
.page-head p{color:var(--muted);max-width:700px;margin:auto}
.island-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding:20px 0 80px}
.island-card{display:flex;flex-direction:column;text-decoration:none;background:#fff;border:1px solid var(--line);border-radius:25px;overflow:hidden;box-shadow:0 7px 22px rgba(9,79,93,.05);transition:transform .2s,box-shadow .2s}
.island-card:hover{transform:translateY(-5px);box-shadow:0 18px 35px rgba(9,79,93,.13)}
.island-card img{width:100%;height:270px;object-fit:cover;object-position:center 40%;background:#d9eeee}
.island-card-body{padding:22px 24px 26px;display:flex;flex-direction:column;flex:1}
.island-number{font-size:.75rem;letter-spacing:.16em;font-weight:800;color:var(--blue);text-transform:uppercase}
.island-card h2{font-size:1.42rem;line-height:1.3;margin:.45rem 0}
.island-card p{font-size:.91rem;color:var(--muted);flex:1;margin:0 0 1.2rem}
.card-arrow{font-weight:800;color:var(--blue);font-size:.9rem}
.island-hero{background:linear-gradient(90deg,rgba(9,65,82,.84),rgba(9,65,82,.36)),var(--hero-image) center 42%/cover;color:#fff;padding:94px 0 110px}
.island-hero .eyebrow{color:#d3f5fb}
.island-hero h1{font-size:clamp(2.7rem,5vw,4.8rem);line-height:1.12;margin:.2rem 0 1rem}
.island-hero p{font-size:1.12rem;max-width:610px;margin-bottom:1.8rem}
.island-hero .button-outline{color:#fff;border-color:#fff}
.levels-section{padding:70px 0 100px}
.section-heading{text-align:center;margin-bottom:35px}
.section-heading h2{font-size:clamp(2rem,4vw,3rem);line-height:1.2;margin-bottom:.5rem}
.section-heading p{color:var(--muted);margin:0}
.level-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.level-card{display:flex;flex-direction:column;min-height:260px;padding:26px;border-radius:23px;background:#fff;border:1px solid var(--line);text-decoration:none;transition:transform .2s,box-shadow .2s}
.level-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(8,81,101,.12)}
.level-card .level-label{color:var(--accent,var(--blue));font-weight:800;letter-spacing:.1em;font-size:.85rem;text-transform:uppercase}
.level-card h3{font-size:1.55rem;line-height:1.32;margin:1rem 0 .65rem}
.level-card p{color:var(--muted);font-size:.94rem;flex:1}
.level-card .card-arrow{color:var(--accent,var(--blue))}
.breadcrumb{padding:28px 0 0;display:flex;gap:.55rem;align-items:center;font-size:.83rem;color:var(--muted);flex-wrap:wrap}
.breadcrumb a{color:var(--blue);text-decoration:none}
.detail-header{padding:43px 0 30px}
.detail-header h1{font-size:clamp(2.3rem,5vw,4rem);line-height:1.2;margin:.25rem 0 .7rem}
.detail-header p{color:var(--muted);font-size:1.06rem;max-width:760px}
.level-content{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);gap:42px;align-items:start;padding-bottom:60px}
.feature-image{width:100%;max-height:650px;object-fit:cover;object-position:center 40%;border-radius:25px;background:#e9f3f2;box-shadow:0 18px 38px rgba(13,77,91,.11)}
.feature-image.contain{object-fit:contain;max-height:none;background:#e9f3f2}
.story-panel{background:#fff;border:1px solid var(--line);border-radius:25px;padding:clamp(25px,4vw,42px);box-shadow:0 10px 28px rgba(9,79,93,.05)}
.story-panel h2{font-size:1.5rem;line-height:1.3;margin-bottom:1rem}
.story-panel p{color:#345766;margin-bottom:1rem}
.story-panel p:last-child{margin-bottom:0}
.gentle-note{border-left:4px solid var(--accent,var(--blue));padding:12px 0 12px 18px;margin:22px 0;color:#456370;background:#f7fcfc}
.audio-box{margin-top:28px;padding:25px;background:#edf8fa;border-radius:20px}
.audio-box h3{margin:0 0 .3rem;font-size:1.17rem}
.audio-box p{font-size:.87rem;margin:0 0 1rem}
.language-choices{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.language-choices button{border:1.5px solid #9ac8d3;border-radius:999px;background:#fff;color:var(--blue);padding:.55rem .9rem;font-size:.85rem;font-weight:700}
.language-choices button[aria-pressed="true"]{background:var(--blue);color:#fff;border-color:var(--blue)}
.audio-box audio{width:100%;height:44px}
.audio-status{display:block;min-height:1.4em;margin-top:.5rem;color:var(--muted);font-size:.79rem}
.gallery{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}
.gallery figure{margin:0}
.gallery img{width:100%;height:220px;object-fit:cover;border-radius:14px;background:#e9f3f2}
.gallery figcaption{color:var(--muted);font-size:.76rem;padding-top:6px}
.detail-actions{display:flex;gap:12px;flex-wrap:wrap;padding:10px 0 85px}
.theme-green{--accent:var(--green)}
.theme-purple{--accent:var(--purple)}
.island-card.theme-green h2,.island-card.theme-green .island-number,.island-card.theme-green .card-arrow{color:var(--green)}
.island-card.theme-purple h2,.island-card.theme-purple .island-number,.island-card.theme-purple .card-arrow{color:var(--purple)}
.theme-green .section-heading .eyebrow{color:var(--green)}
.theme-purple .section-heading .eyebrow{color:var(--purple)}
.theme-green .level-label,.theme-purple .level-label{color:var(--accent)}
.theme-green .detail-header .eyebrow,.theme-purple .detail-header .eyebrow{color:var(--accent)}
.theme-green .level-card .card-arrow,.theme-purple .level-card .card-arrow{color:var(--accent)}
@media(max-width:850px){.island-grid{grid-template-columns:repeat(2,1fr)}.level-grid{grid-template-columns:1fr}.level-card{min-height:0}.level-content{grid-template-columns:1fr;gap:22px}.feature-image{max-height:560px}.intro-strip .container{gap:2rem}}
@media(max-width:600px){.site-header{height:64px}.brand{font-size:1rem}.site-header nav a{font-size:.82rem}.hero{min-height:650px;background-position:62% center}.hero-inner{padding:80px 0}.intro-strip .container{grid-template-columns:1fr}.intro-image{max-height:300px}.page-head{padding-top:55px}.island-grid{grid-template-columns:1fr;gap:18px;padding-bottom:60px}.island-card img{height:240px}.island-hero{padding:70px 0 85px}.levels-section{padding:55px 0 75px}.detail-header{padding-top:32px}.story-panel{padding:24px}.gallery img{height:150px}.site-footer{flex-direction:column;gap:5px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}