:root{
  --night:#14162a; --night2:#221d38; --ink:#1b1b22; --ink2:#4a4857; --muted:#8a8796;
  --ivory:#faf7f1; --paper:#ffffff; --line:#ece6da;
  --gold:#c8a465; --gold2:#e6d2a6; --gold-ink:#8a6a2f; --teal:#58b7b3;
  --danger:#c0564b; --ok:#3f9a74;
  --r:18px; --r-sm:12px;
  --shadow:0 6px 24px rgba(20,22,42,.08), 0 1px 2px rgba(20,22,42,.06);
  --serif:"Noto Serif TC","Songti TC","PMingLiU",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang TC","Noto Sans TC","Noto Sans CJK TC","Microsoft JhengHei",sans-serif;
  --top:calc(52px + env(safe-area-inset-top));
  --tab:calc(64px + env(safe-area-inset-bottom));
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--night);}
body{font-family:var(--sans);color:var(--ink);font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased}
#app{max-width:520px;margin:0 auto;min-height:100vh;background:var(--ivory);position:relative;box-shadow:0 0 60px rgba(0,0,0,.35)}
a{color:inherit}
img{max-width:100%;display:block}
button{font:inherit;color:inherit}
h1,h2,h3{font-family:var(--serif);font-weight:700;letter-spacing:.02em;margin:0}
svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* top bar */
.topbar{position:fixed;top:0;left:50%;transform:translateX(-50%);width:100%;max-width:520px;z-index:30;
  height:var(--top);padding:env(safe-area-inset-top) 8px 0;display:flex;align-items:center;justify-content:space-between;
  background:rgba(20,22,42,.92);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);color:#fff}
.topbar-title{flex:1;text-align:center;font-family:var(--serif);font-size:16px;letter-spacing:.06em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0 6px}
.top-logo{height:15px;width:auto;margin:0 auto;opacity:.95}
.icon-btn{width:44px;height:44px;border:0;background:none;display:grid;place-items:center;border-radius:50%;color:#fff;cursor:pointer;text-decoration:none}
.icon-btn:active{background:rgba(255,255,255,.1)}
.icon-btn[hidden]{visibility:hidden;display:grid}
.demo-ribbon{position:fixed;top:var(--top);left:50%;transform:translateX(-50%);width:100%;max-width:520px;z-index:29;
  text-align:center;font-size:11px;letter-spacing:.06em;color:var(--gold2);background:rgba(34,29,56,.94);padding:4px 10px;border-bottom:1px solid rgba(200,164,101,.25)}
#view{padding:calc(var(--top) + 38px) 0 calc(var(--tab) + 24px);min-height:100vh;outline:none}
.screen{animation:fadeUp .28s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* tab bar */
.tabbar{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:520px;z-index:30;height:var(--tab);
  padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);
  background:rgba(255,255,255,.94);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-top:1px solid var(--line)}
.tabbar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;text-decoration:none;color:var(--muted);font-size:11px;letter-spacing:.08em}
.tabbar a svg{width:23px;height:23px}
.tabbar a.active{color:var(--night)}
.tabbar a.active svg{stroke:var(--gold-ink);fill:rgba(200,164,101,.18)}
.tabbar a.active span{font-weight:600}

/* generic */
.pad{padding:0 18px}
.section{margin:26px 0}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;padding:0 18px;margin-bottom:12px}
.sec-head h2{font-size:19px}
.sec-head a{font-size:13px;color:var(--gold-ink);text-decoration:none}
.eyebrow{font-size:11px;letter-spacing:.28em;color:var(--gold-ink);text-transform:uppercase;margin-bottom:6px}
.card{background:var(--paper);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden}
.muted{color:var(--muted)}
.small{font-size:12.5px}
.tag{display:inline-block;font-size:11px;padding:2px 9px;border-radius:99px;background:rgba(200,164,101,.15);color:var(--gold-ink);letter-spacing:.05em}
.tag.dark{background:rgba(20,22,42,.75);color:var(--gold2)}
.tag.teal{background:rgba(88,183,179,.15);color:#2f7e7a}
.tag.ok{background:rgba(63,154,116,.14);color:var(--ok)}
.tag.warn{background:rgba(200,164,101,.2);color:var(--gold-ink)}
.placeholder{color:#b07a2a;background:#fff4df;border:1px dashed #e2c38c;border-radius:6px;padding:0 6px;font-size:.92em;white-space:nowrap}
.btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;min-height:50px;border:0;border-radius:14px;
  background:var(--night);color:#fff;font-size:16px;font-weight:600;letter-spacing:.08em;cursor:pointer;text-decoration:none;transition:transform .12s, opacity .2s}
.btn:active{transform:scale(.98)}
.btn.gold{background:linear-gradient(135deg,#d9b877,#b8914c);color:#1d1606}
.btn.ghost{background:transparent;color:var(--night);border:1.5px solid var(--night)}
.btn.light{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.35)}
.btn[disabled]{opacity:.38;pointer-events:none}
.btn.sm{min-height:38px;font-size:14px;border-radius:11px;width:auto;padding:0 16px}
.row{display:flex;gap:10px;align-items:center}
.note{font-size:12.5px;color:var(--ink2);background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:10px 12px;line-height:1.6}
.note.demo{background:#fff8ea;border-color:#efdcb5;color:#7a5a20}
.divider{height:1px;background:var(--line);margin:16px 0}

/* hero */
.hero{position:relative;margin-top:-38px;color:#fff;min-height:500px;display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden;
  background:url(../img/hero-portrait.jpg) 100% 0/auto 470px no-repeat,var(--night)}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--night) 0,var(--night) 28%,rgba(20,22,42,.55) 40%,rgba(20,22,42,0) 58%),linear-gradient(180deg,rgba(20,22,42,.25) 0,rgba(20,22,42,0) 10%,rgba(20,22,42,0) 50%,rgba(20,22,42,.85) 75%,var(--night) 94%)}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:radial-gradient(1.5px 1.5px at 12% 70%,rgba(255,240,210,.7),transparent),radial-gradient(1px 1px at 80% 78%,rgba(255,240,210,.6),transparent),radial-gradient(1.5px 1.5px at 55% 90%,rgba(255,240,210,.5),transparent),radial-gradient(1px 1px at 30% 85%,rgba(255,240,210,.6),transparent),radial-gradient(1px 1px at 92% 62%,rgba(255,240,210,.5),transparent)}
.hero-in{position:relative;z-index:1;padding:0 22px 26px}
.hero .logo-w{height:14px;width:auto;opacity:.9;margin-bottom:14px}
.hero h1{font-size:30px;line-height:1.3}
.hero h1 small{display:block;font-size:15px;font-weight:500;color:var(--gold2);letter-spacing:.2em;margin-top:6px}
.hero p{color:rgba(255,255,255,.82);font-size:14px;margin:12px 0 18px}
.hero .cta-row{display:grid;grid-template-columns:1.4fr 1fr;gap:10px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);margin:-1px 0 0;background:var(--night);color:#fff;padding:14px 10px 16px;text-align:center}
.stats b{display:block;font-family:var(--serif);font-size:20px;color:var(--gold2)}
.stats span{font-size:11px;color:rgba(255,255,255,.65);letter-spacing:.1em}
.stats-src{grid-column:1/-1;font-size:10px;color:rgba(255,255,255,.4);margin-top:6px}

.hl-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:0 18px}
.hl{padding:16px 14px;background:#fff;border-radius:var(--r);box-shadow:var(--shadow)}
.hl i{font-style:normal;display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--night);color:var(--gold2);margin-bottom:10px;font-size:16px}
.hl h3{font-size:15px;margin-bottom:4px}
.hl p{margin:0;font-size:12.5px;color:var(--ink2);line-height:1.55}

.bio{padding:18px;position:relative}
.bio p{margin:0 0 10px;font-size:14.5px;color:var(--ink2)}
.bio.collapsed .more{display:none}
.bio .sig{height:34px;margin:6px 0 0 auto;opacity:.85}
.link-btn{background:none;border:0;color:var(--gold-ink);font-size:13.5px;padding:0;cursor:pointer;text-decoration:underline;text-underline-offset:3px}

.hscroll{display:flex;gap:12px;overflow-x:auto;padding:4px 18px 10px;scroll-snap-type:x mandatory;scrollbar-width:none}
.hscroll::-webkit-scrollbar{display:none}
.hscroll>*{scroll-snap-align:start;flex:0 0 78%}

.course-card{text-decoration:none;display:block}
.course-card .thumb{aspect-ratio:16/9;background:#222 center/cover;position:relative}
.course-card .thumb .tag{position:absolute;left:10px;top:10px}
.course-card .thumb .lock{position:absolute;right:10px;top:10px;width:30px;height:30px;border-radius:50%;background:rgba(20,22,42,.75);display:grid;place-items:center;color:var(--gold2)}
.course-card .thumb .lock svg{width:16px;height:16px}
.course-card .body{padding:12px 14px 14px}
.course-card h3{font-size:16px;line-height:1.4}
.course-card .meta{display:flex;justify-content:space-between;align-items:center;margin-top:8px;font-size:13px}
.price{font-family:var(--serif);font-weight:700;color:var(--night)}
.price.free{color:var(--ok)}

.quote-card{margin:0 18px;padding:22px 20px;background:linear-gradient(160deg,var(--night),var(--night2));color:#fff;border-radius:var(--r)}
.quote-card blockquote{margin:0;font-family:var(--serif);font-size:16px;line-height:1.8;color:#f3e9d2}
.quote-card cite{display:block;margin-top:12px;font-style:normal;font-size:12px;color:rgba(255,255,255,.6)}

.endorse{display:flex;gap:14px;align-items:center;padding:16px;text-decoration:none}
.endorse img{width:64px;border-radius:8px}
.endorse h3{font-size:15px}

.contact-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:0 18px}
.contact-row a{display:flex;align-items:center;gap:10px;padding:14px;background:#fff;border-radius:var(--r-sm);box-shadow:var(--shadow);text-decoration:none;font-size:14px}
.contact-row a b{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;color:#fff;font-size:13px}
.footer-note{padding:18px;font-size:11.5px;color:var(--muted);text-align:center;line-height:1.7}

/* booking */
.step-head{padding:0 18px 4px}
.has-sticky .step-head,.screen>.step-head{padding-top:2px}
.step-head h1{font-size:23px}
.steps{display:flex;gap:6px;padding:12px 18px 4px}
.steps span{flex:1;height:4px;border-radius:4px;background:var(--line)}
.steps span.on{background:var(--gold)}
.svc{display:flex;gap:12px;padding:12px;margin:0 18px 12px;border:2px solid transparent;cursor:pointer;align-items:stretch}
.svc.sel{border-color:var(--gold)}
.svc .im{width:92px;flex:0 0 92px;border-radius:12px;background:#222 center/cover}
.svc h3{font-size:15px;line-height:1.4}
.svc .meta{font-size:12.5px;color:var(--ink2);margin-top:6px;display:flex;flex-wrap:wrap;gap:6px 12px}
.datestrip{display:flex;gap:8px;overflow-x:auto;padding:4px 18px 10px;scrollbar-width:none}
.datestrip::-webkit-scrollbar{display:none}
.date{flex:0 0 56px;height:78px;gap:1px;border-radius:14px;background:#fff;border:1.5px solid var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer}
.date small{font-size:11px;color:var(--muted)}
.date b{font-size:20px;font-family:var(--serif)}
.date.sel{background:var(--night);border-color:var(--night);color:#fff}
.date.sel small{color:var(--gold2)}
.date.off{opacity:.35;pointer-events:none}
.slots{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:0 18px}
.slot{height:46px;border-radius:12px;border:1.5px solid var(--line);background:#fff;font-size:15px;cursor:pointer}
.slot.sel{border-color:var(--gold);background:#fff8ea;color:var(--gold-ink);font-weight:600}
.slot.taken{text-decoration:line-through;color:#bbb;pointer-events:none;background:#f6f4ef}
form .field{margin:0 18px 14px}
.field label{display:block;font-size:13px;color:var(--ink2);margin-bottom:6px}
.field label em{color:var(--danger);font-style:normal}
.field input,.field textarea,.field select{width:100%;font:inherit;font-size:16px;padding:12px 14px;border-radius:12px;border:1.5px solid var(--line);background:#fff;color:var(--ink);outline:none;appearance:none}
.field textarea{min-height:96px;resize:vertical}
.field input:focus,.field textarea:focus{border-color:var(--gold)}
.file-pick{display:flex;align-items:center;gap:10px;padding:12px 14px;border:1.5px dashed var(--line);border-radius:12px;background:#fff;font-size:14px;color:var(--ink2);cursor:pointer}
.sticky-cta{position:fixed;left:50%;transform:translateX(-50%);bottom:var(--tab);width:100%;max-width:520px;padding:10px 18px;background:linear-gradient(180deg,rgba(250,247,241,0),var(--ivory) 30%);z-index:20}
.has-sticky{padding-bottom:84px}
.summary{margin:0 18px;padding:16px}
.summary .li{display:flex;justify-content:space-between;gap:12px;padding:7px 0;font-size:14px}
.summary .li span:first-child{color:var(--muted);flex:0 0 auto}
.summary .li span:last-child{text-align:right}
.summary .total{border-top:1px solid var(--line);margin-top:6px;padding-top:12px;font-weight:700;font-size:16px}
.stages{margin:0 18px;padding:6px 16px}
.stage{display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line)}
.stage:last-child{border:0}
.stage b{flex:0 0 40px;font-family:var(--serif);color:var(--gold-ink)}
.stage h4{margin:0;font-size:14px}
.stage p{margin:2px 0 0;font-size:12.5px;color:var(--muted)}

/* success */
.success{text-align:center;padding:10px 24px}
.success .seal{width:84px;height:84px;margin:10px auto 16px;border-radius:50%;background:linear-gradient(135deg,#d9b877,#b8914c);display:grid;place-items:center;color:#1d1606;box-shadow:0 10px 30px rgba(200,164,101,.45)}
.success .seal svg{width:40px;height:40px;stroke-width:2.4}
.success h1{font-size:24px;margin-bottom:6px}

/* course detail */
.c-hero{margin-top:-38px;aspect-ratio:16/9;background:#222 center/cover;position:relative}
.c-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(20,22,42,.6))}
.c-info{padding:16px 18px 0}
.c-info h1{font-size:22px;line-height:1.4;margin:8px 0}
.lessons{margin:0 18px}
.lesson{display:flex;gap:12px;align-items:center;padding:12px 14px;border-bottom:1px solid var(--line);cursor:pointer;background:#fff}
.lesson:last-child{border:0}
.lesson .n{flex:0 0 28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:12px;background:var(--ivory);color:var(--ink2)}
.lesson .t{flex:1;font-size:14px;line-height:1.45}
.lesson .t small{display:block;color:var(--muted);font-size:11.5px}
.lesson .ic{color:var(--gold-ink)}
.lesson .ic svg{width:20px;height:20px}
.lesson.locked .t{color:var(--muted)}
.lesson.playing{background:#fff8ea}
.player{aspect-ratio:16/9;background:#000;position:relative;margin:0 18px 14px;border-radius:var(--r);overflow:hidden}
.player iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.lite{position:absolute;inset:0;background:#000 center/cover;cursor:pointer;display:grid;place-items:center}
.lite::after{content:"";position:absolute;inset:0;background:rgba(0,0,0,.25)}
.lite .play{position:relative;z-index:1;width:64px;height:46px;border-radius:14px;background:rgba(200,30,30,.92);display:grid;place-items:center}
.lite .play::before{content:"";border-style:solid;border-width:10px 0 10px 17px;border-color:transparent transparent transparent #fff;margin-left:4px}
.lite .cap{position:absolute;left:12px;right:12px;bottom:10px;z-index:1;color:#fff;font-size:13px;text-shadow:0 1px 6px rgba(0,0,0,.6)}
.lockbox{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:#fff;background:linear-gradient(160deg,rgba(20,22,42,.9),rgba(34,29,56,.95));text-align:center;padding:20px}
.lockbox svg{width:34px;height:34px;color:var(--gold2)}

.filter{display:flex;gap:8px;padding:0 18px 14px;overflow-x:auto;scrollbar-width:none}
.filter button{flex:0 0 auto;border:1.5px solid var(--line);background:#fff;border-radius:99px;padding:6px 14px;font-size:13px;cursor:pointer}
.filter button.on{background:var(--night);color:#fff;border-color:var(--night)}
.list-v{display:grid;gap:14px;padding:0 18px}

/* member */
.auth-tabs{display:grid;grid-template-columns:1fr 1fr;margin:0 18px 18px;background:#eee8dc;border-radius:12px;padding:4px}
.auth-tabs button{border:0;background:none;height:40px;border-radius:9px;font-size:15px;cursor:pointer;color:var(--ink2)}
.auth-tabs button.on{background:#fff;color:var(--ink);font-weight:600;box-shadow:0 1px 4px rgba(0,0,0,.08)}
.profile{margin:-38px 0 0;padding:34px 18px 22px;background:linear-gradient(160deg,var(--night),var(--night2));color:#fff;display:flex;gap:14px;align-items:center}
.avatar{width:62px;height:62px;border-radius:50%;background:linear-gradient(135deg,#d9b877,#b8914c);color:#1d1606;display:grid;place-items:center;font-family:var(--serif);font-size:26px;font-weight:700;flex:0 0 62px}
.profile h1{font-size:20px}
.profile p{margin:2px 0 0;font-size:12.5px;color:rgba(255,255,255,.65)}
.mstats{display:grid;grid-template-columns:repeat(3,1fr);margin:-1px 0 0;background:#fff;border-bottom:1px solid var(--line)}
.mstats div{text-align:center;padding:14px 0}
.mstats b{display:block;font-family:var(--serif);font-size:20px}
.mstats span{font-size:12px;color:var(--muted)}
.bk{margin:0 18px 10px;padding:14px;display:flex;gap:12px;align-items:center}
.bk .d{flex:0 0 54px;height:58px;border-radius:12px;background:var(--night);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center}
.bk .d small{font-size:10.5px;color:var(--gold2)}
.bk .d b{font-family:var(--serif);font-size:20px;line-height:1.1}
.bk .i{flex:1;min-width:0}
.bk .i h4{margin:0;font-size:14px;line-height:1.4}
.bk .i p{margin:3px 0 0;font-size:12px;color:var(--muted);display:flex;flex-wrap:wrap;gap:4px 6px;align-items:center}
.empty{margin:0 18px;padding:22px;text-align:center;color:var(--muted);font-size:13.5px;border:1.5px dashed var(--line);border-radius:var(--r)}
.menu{margin:0 18px}
.menu a,.menu button{display:flex;justify-content:space-between;align-items:center;width:100%;padding:15px 16px;border:0;background:#fff;border-bottom:1px solid var(--line);font-size:15px;text-decoration:none;cursor:pointer;text-align:left}
.menu>*:last-child{border:0}
.menu .danger{color:var(--danger)}

/* checkout */
.paymethods{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:0 18px}
.pm{height:54px;border-radius:12px;border:1.5px solid var(--line);background:#fff;font-size:13px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px}
.pm.sel{border-color:var(--gold);background:#fff8ea;font-weight:600}
.cardviz{margin:0 18px 14px;aspect-ratio:1.72;border-radius:18px;padding:18px;color:#fff;background:radial-gradient(120% 120% at 0% 0%,#3a3160,#14162a 60%);position:relative;overflow:hidden;box-shadow:0 14px 34px rgba(20,22,42,.35)}
.cardviz::after{content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;border-radius:50%;border:1px solid rgba(230,210,166,.35)}
.cardviz .chip{width:40px;height:30px;border-radius:6px;background:linear-gradient(135deg,#e6d2a6,#b8914c)}
.cardviz .num{font-family:ui-monospace,Menlo,monospace;font-size:19px;letter-spacing:.12em;margin-top:26px}
.cardviz .bot{display:flex;justify-content:space-between;margin-top:14px;font-size:12px;color:rgba(255,255,255,.75)}
.cardviz .demo-stamp{position:absolute;right:16px;top:16px;font-size:11px;letter-spacing:.2em;color:var(--gold2);border:1px solid rgba(230,210,166,.6);padding:2px 8px;border-radius:6px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:0 18px 14px}
.two .field{margin:0}
.check{display:flex;gap:10px;align-items:flex-start;margin:0 18px 12px;font-size:13.5px;color:var(--ink2)}
.check input{width:20px;height:20px;margin-top:2px;accent-color:var(--night);flex:0 0 20px}
.terms{margin:0 18px 14px;max-height:0;overflow:hidden;transition:max-height .35s ease}
.terms.open{max-height:1400px}
.terms ol{margin:0;padding:12px 14px 12px 30px;background:#fff;border-radius:12px;border:1px solid var(--line);font-size:12px;color:var(--ink2);line-height:1.6}
.terms li{margin-bottom:6px}
.processing{position:fixed;inset:0;z-index:60;background:rgba(20,22,42,.82);display:grid;place-items:center;color:#fff;text-align:center}
.spinner{width:46px;height:46px;border-radius:50%;border:3px solid rgba(255,255,255,.2);border-top-color:var(--gold2);animation:spin 1s linear infinite;margin:0 auto 14px}
@keyframes spin{to{transform:rotate(360deg)}}

/* testimony */
.t-hero{margin-top:-38px;padding:30px 20px 24px;background:linear-gradient(160deg,var(--night),var(--night2));color:#fff;text-align:center}
.t-hero h1{font-size:28px;letter-spacing:.3em;font-family:var(--sans);font-weight:800}
.t-hero p{margin:6px 0 0;color:var(--gold2);font-size:13px;letter-spacing:.2em}
.letter{margin:0 18px;padding:18px}
.letter .thumbs{display:grid;grid-template-columns:1fr;gap:10px;margin-top:14px}
.letter .thumbs img{border-radius:12px;border:1px solid var(--line);cursor:zoom-in;aspect-ratio:16/10;object-fit:cover;width:100%;object-position:top}
.letter .thumbs span{font-size:12px;color:var(--muted);text-align:center}
.letter blockquote{margin:14px 0 0;padding:12px 14px;border-left:3px solid var(--gold);background:var(--ivory);border-radius:0 10px 10px 0;font-family:Georgia,var(--serif);font-size:14px;font-style:italic;color:var(--ink2)}
.letter cite{display:block;margin-top:8px;font-size:11.5px;color:var(--muted);font-style:normal}
.qa{margin:0 18px;display:grid;grid-template-columns:110px 1fr;gap:14px;padding:14px;align-items:start}
.qa img{border-radius:12px;cursor:zoom-in}
.qa p{margin:0 0 8px;font-size:13.5px}
.qa p b{color:var(--gold-ink);font-family:var(--serif)}
.fb{margin:0 18px 10px;padding:14px 16px}
.fb .v{font-size:12px;color:var(--muted);line-height:1.5}
.fb .c{font-size:15px;margin:6px 0;line-height:1.6}
.fb .by{font-size:11.5px;color:var(--gold-ink)}
.books{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:0 18px;align-items:end}
.books img{border-radius:6px;box-shadow:0 8px 18px rgba(0,0,0,.15);cursor:zoom-in}
.media{display:flex;flex-wrap:wrap;gap:10px;padding:0 18px;justify-content:center}
.media img{height:46px;width:auto;border-radius:8px;background:#fff;padding:4px;box-shadow:var(--shadow)}

/* sheet + lightbox + toast */
.sheet-backdrop{position:fixed;inset:0;background:rgba(10,10,20,.5);z-index:50}
.sheet{position:fixed;left:50%;transform:translateX(-50%);bottom:0;width:100%;max-width:520px;z-index:51;background:var(--ivory);border-radius:22px 22px 0 0;padding:10px 0 calc(20px + env(safe-area-inset-bottom));max-height:88vh;overflow:auto;animation:sheetUp .25s ease}
.sheet .grab{width:42px;height:5px;border-radius:5px;background:#d8d2c4;margin:0 auto 12px}
@keyframes sheetUp{from{transform:translate(-50%,100%)}to{transform:translate(-50%,0)}}
.lightbox{position:fixed;inset:0;z-index:70;background:rgba(0,0,0,.92);display:flex;align-items:center;justify-content:center;padding:20px;overflow:auto}
.lightbox img{max-height:100%;border-radius:8px}
.toast{position:fixed;left:50%;bottom:calc(var(--tab) + 16px);transform:translate(-50%,20px);background:var(--night);color:#fff;padding:10px 18px;border-radius:99px;font-size:14px;opacity:0;pointer-events:none;transition:.25s;z-index:80;white-space:nowrap;max-width:90%}
.toast.show{opacity:1;transform:translate(-50%,0)}
.install-tip{margin:0 18px;padding:14px 16px;display:flex;gap:12px;align-items:center;background:#fff;border-radius:var(--r);box-shadow:var(--shadow)}
.install-tip img{width:44px;height:44px;border-radius:11px}
.install-tip div{flex:1;font-size:13px;color:var(--ink2);line-height:1.5}
.install-tip b{color:var(--ink);font-size:14px}

/* ---- language toggle (中 / EN) & centered title ---- */
.topbar-title{position:absolute;left:112px;right:112px;top:env(safe-area-inset-top,0px);bottom:0;display:flex;align-items:center;justify-content:center;padding:0;pointer-events:none}
.topbar-title .top-logo{display:block}
.top-right{display:flex;align-items:center;gap:0;margin-left:auto}
.lang-btn{display:inline-flex;align-items:center;height:30px;padding:2px;border-radius:999px;border:1px solid currentColor;border-color:color-mix(in srgb,currentColor 45%,transparent)}
.lang-btn button{border:0;background:none;color:inherit;height:24px;min-width:30px;padding:0 8px;border-radius:999px;font:600 12px/1 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans TC",sans-serif;letter-spacing:.02em;cursor:pointer;opacity:.6}
.lang-btn button.on{opacity:1;background:currentColor}
.lang-btn button.on{background:color-mix(in srgb,currentColor 22%,transparent)}
.lang-btn button:focus-visible{outline:2px solid currentColor;outline-offset:1px}
/* English layout tweaks */
html[lang="en"] .stage b{flex:0 0 60px;font-size:13px;line-height:1.5}
html[lang="en"] .hero h1 small,html[lang="en"].themed .hero h1 small{letter-spacing:.05em}
html[lang="en"] .hero h1,html[lang="en"].themed .hero h1{letter-spacing:.03em}
html[lang="en"] .btn,html[lang="en"].themed .btn{letter-spacing:.02em}
html[lang="en"] .demo-ribbon{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:0}
html[lang="en"][data-theme="3"] .hero{min-height:650px}
html[lang="en"][data-theme="3"] .hero h1 small{letter-spacing:.12em}
html[lang="en"][data-theme="5"] .hero{min-height:610px}
html[lang="en"][data-theme="5"] .hero h1{text-shadow:0 0 10px #f2eee4,0 0 3px #f2eee4}
html[lang="en"] .t-hero h1,html[lang="en"].themed .t-hero h1{letter-spacing:.2em}
/* Latin punctuation (quotes, dashes, middle dot, ellipsis) in English mode, so CJK fonts don't render them full-width */
@font-face{font-family:"RWPunctSans";src:local("Helvetica Neue"),local("HelveticaNeue"),local("Arial"),local("Roboto"),local("Segoe UI"),local("Noto Sans"),local("NotoSans-Regular"),local("DejaVu Sans"),local("Liberation Sans");unicode-range:U+2013-2014,U+2018-201F,U+2026,U+00B7}
@font-face{font-family:"RWPunctSerif";src:local("Georgia"),local("Times New Roman"),local("Noto Serif"),local("NotoSerif-Regular"),local("DejaVu Serif"),local("Liberation Serif");unicode-range:U+2013-2014,U+2018-201F,U+2026,U+00B7}
html[lang="en"] .tabbar a span{font-size:10.5px;letter-spacing:0}