:root{--bg:#fafaf7;--fg:#1c1a17;--muted:#6b665e;--card:#ffffff;--line:#e4dfd5;--accent:#b3261e;--accent-fg:#ffffff;--radius:10px}@media (prefers-color-scheme:dark){:root{--bg:#14120f;--fg:#f3efe7;--muted:#a39d92;--card:#1e1b17;--line:#342f28;--accent:#e0554c;--accent-fg:#14120f}}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,Segoe UI,Noto Sans TC,Noto Sans SC,sans-serif}a{color:inherit}.container{max-width:1040px;margin:0 auto;padding:0 16px}.site-header{border-bottom:1px solid var(--line);background:var(--card)}.site-header .container{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding-top:12px;padding-bottom:12px}.brand{font-weight:700;font-size:1.15rem;text-decoration:none}.nav{display:flex;flex-wrap:wrap;gap:14px;align-items:center}.nav a{text-decoration:none;color:var(--muted)}.nav a:focus-visible,.nav a:hover{color:var(--fg);text-decoration:underline}input,select{padding:8px 10px;border:1px solid var(--line);background:var(--card);color:var(--fg)}.btn,input,select{font:inherit;border-radius:8px}.btn{display:inline-block;padding:10px 16px;border:1px solid var(--accent);background:var(--accent);color:var(--accent-fg);font-weight:600;text-decoration:none;cursor:pointer}.btn.secondary{background:transparent;color:var(--fg);border-color:var(--line)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:2px}main{padding:24px 0 64px}.hero{padding:40px 0 24px}.hero h1{font-size:clamp(1.8rem,5vw,2.8rem);margin:0 0 8px}.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));grid-gap:16px;gap:16px;padding:0;list-style:none}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;height:100%;text-decoration:none}.card:hover{border-color:var(--accent)}.card .cover{aspect-ratio:16/9;background:var(--line);object-fit:cover;width:100%;display:block}.card .body{padding:12px 14px 16px;display:flex;flex-direction:column;gap:6px;flex:1 1}.card h2{font-size:1.05rem;margin:0}.badge{display:inline-block;font-size:.75rem;padding:2px 8px;border-radius:99px;border:1px solid var(--line);color:var(--muted)}.filters{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}.filters button{padding:6px 14px;border-radius:99px;border:1px solid var(--line);background:var(--card);color:var(--fg);font:inherit;cursor:pointer}.filters button[aria-pressed=true]{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}.status{padding:24px;text-align:center;color:var(--muted)}.detail-head{display:grid;grid-gap:20px;gap:20px;grid-template-columns:1fr}@media (min-width:760px){.detail-head{grid-template-columns:1.4fr 1fr;align-items:start}}.buy-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;display:grid;grid-gap:10px;gap:10px}.price{font-size:1.6rem;font-weight:700}.lesson-list{list-style:none;margin:0;padding:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--card)}.lesson-list li{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;justify-content:space-between;padding:10px 14px;border-bottom:1px solid var(--line)}.lesson-list li:last-child{border-bottom:0}form.stack{display:grid;grid-gap:12px;gap:12px;max-width:360px}label{display:grid;grid-gap:4px;gap:4px}.error{color:var(--accent)}.player-video{width:100%;aspect-ratio:16/9;background:#000;border-radius:var(--radius);display:block}.player-controls{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;margin:12px 0}.player-controls .btn{min-height:44px}label.inline{display:inline-flex;flex-direction:row;align-items:center;gap:6px}.btn[aria-pressed=true]{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}.marker-strip{position:relative;height:14px;margin:10px 0;background:var(--line);border-radius:7px;overflow:hidden}.marker-progress{position:absolute;inset:0 auto 0 0;background:var(--muted);opacity:.35}.marker{position:absolute;top:0;bottom:0;min-width:4px;border:0;background:var(--accent);opacity:.55;cursor:pointer;padding:0}.marker.active{opacity:1}.technique-list{list-style:none;margin:0;padding:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--card)}.technique-list li{border-bottom:1px solid var(--line);padding:0 14px}.technique-list li:last-child{border-bottom:0}.technique-list li.active{background:color-mix(in srgb,var(--accent) 10%,var(--card))}.technique-btn{display:block;width:100%;text-align:start;background:none;border:0;color:inherit;font:inherit;cursor:pointer;padding:10px 0}.technique-btn:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.linklike{background:none;border:0;padding:0;font:inherit;color:var(--muted);text-decoration:underline;cursor:pointer}.linklike:focus-visible,.linklike:hover{color:var(--fg)}.nav a.btn{color:var(--accent-fg)}.nav a.btn.secondary{color:var(--fg)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media (max-width:640px){.nav select{min-height:44px}}.saving{display:flex;flex-direction:column;gap:2px}.lesson-list .badge{-webkit-margin-end:4px;margin-inline-end:4px}.owned-lessons{margin:4px 0;-webkit-padding-start:18px;padding-inline-start:18px}.yt-frame{position:relative;aspect-ratio:16/9;background:#000;border-radius:var(--radius);overflow:hidden}.yt-frame:-webkit-full-screen{border-radius:0}.yt-frame:fullscreen{border-radius:0}.yt-host,.yt-host iframe,.yt-host>div{position:absolute;inset:0;width:100%;height:100%;border:0}.subtitle-overlay{position:absolute;left:4%;right:4%;bottom:12%;text-align:center;color:#fff;background:rgba(0,0,0,.7);padding:4px 10px;border-radius:6px;font-size:clamp(.95rem,2.6vw,1.4rem);line-height:1.35;white-space:pre-line;pointer-events:none}.order-summary{border-bottom:1px solid var(--line);padding-bottom:8px}.order-summary p{margin:2px 0}.pay-bar{position:-webkit-sticky;position:sticky;bottom:0;z-index:10;display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding:12px 0;background:var(--card);border-top:1px solid var(--line)}.pay-bar .btn{min-height:44px;flex:1 1 140px;text-align:center}.badge.free{background:#0a7a3c;color:#fff;border-color:#0a7a3c;font-weight:600}.cover.thumb{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:12px;text-align:center;color:#fff;background:linear-gradient(135deg,#5c0f0b,#b3261e)}.cover.thumb.hero{min-height:220px}.thumb-play{opacity:.9}.thumb-form{font-size:1.25rem;font-weight:700;line-height:1.2;overflow-wrap:anywhere}.thumb-by{font-size:.8rem;opacity:.9}.chip{display:inline-block;padding:4px 10px;border-radius:6px;font-size:.875rem;font-weight:600;background:color-mix(in srgb,var(--accent) 14%,transparent);color:var(--fg);cursor:default}.lang-switch select{min-height:44px}body{display:flex;flex-direction:column;min-height:100vh}main{flex:1 0 auto}.site-footer{margin-top:48px;border-top:1px solid var(--line);background:var(--card);padding:24px 0}.site-footer p{margin:6px 0}.footer-nav{display:flex;flex-wrap:wrap;gap:4px 20px}.footer-nav a,.site-footer a{display:inline-block;min-height:44px;line-height:44px;color:var(--fg)}.home-section{padding:28px 0 8px}.home-section h2{margin:0 0 14px}.steps,.values{display:grid;grid-gap:14px;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));list-style:none;padding:0;margin:0}.steps li,.values li{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}.steps h3,.values h3{margin:0 0 6px;font-size:1.05rem}.steps p,.values p{margin:0}.step-num{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:99px;background:var(--accent);color:var(--accent-fg);font-weight:700;margin-bottom:8px}.home-more{margin-top:14px}.marker-strip{height:22px}.marker{border-left:2px solid var(--card)}.marker.active{box-shadow:inset 0 0 0 1px var(--card)}.technique-list{max-height:18rem;overflow-y:auto;overscroll-behavior:contain}.technique-btn{min-height:44px}@media (max-width:480px){.technique-list{max-height:14rem}}.scrubber{display:block;width:100%;height:44px;margin:4px 0;touch-action:none;accent-color:var(--accent);cursor:pointer}.marker-strip{touch-action:manipulation}.marker-strip,.player-video,.scrubber,.yt-frame{direction:ltr}[dir=rtl] .subtitle-overlay{direction:rtl}.safety-banner{background:var(--card);border:1px solid var(--line);-webkit-border-start:4px solid var(--accent);border-inline-start:4px solid var(--accent);border-radius:var(--radius);padding:10px 14px;margin:0 0 12px;display:grid;grid-gap:6px;gap:6px}.safety-banner p,.safety-banner ul{margin:0}.safety-banner ul{-webkit-padding-start:1.2em;padding-inline-start:1.2em}.safety-banner .safety-dismiss{justify-self:start;min-height:44px}.safety-banner .linklike{min-height:44px}.checkout-notice{font-size:.9rem;margin:4px 0}.terms{max-width:720px}.terms h3{margin:1em 0 .2em}.cover.thumb{position:relative;overflow:hidden;aspect-ratio:16/9;width:100%}.thumb-fallback{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;position:absolute;inset:0;padding:12px}.thumb-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .2s}.cover.thumb[data-thumb=ok] .thumb-img{opacity:1}.cover.thumb[data-thumb=ok] .thumb-fallback{visibility:hidden}.cover.thumb.hero{min-height:0;max-width:640px}.cover.thumb.row{width:112px;flex:none;border-radius:6px}.cover.thumb.row .thumb-fallback{padding:0}.lesson-title{display:flex;align-items:center;gap:12px}@media (prefers-reduced-motion:reduce){.thumb-img{transition:none}}