:root{
  --bg:#0b0b0d; --panel:#161619; --panel-2:#1e1e23; --line:#2a2a30;
  --text:#f4f4f5; --muted:#a1a1aa;
  --accent:#ff5a1f; --passed:#22c55e; --pending:#f59e0b; --failed:#ef4444; --none:#52525b;
  --font-display:'Barlow Condensed','Noto Sans TC','PingFang TC',sans-serif;
  --font-body:'Noto Sans TC','PingFang TC','Microsoft JhengHei',sans-serif;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
[hidden]{display:none!important;}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);}
body{font-family:var(--font-body);line-height:1.5;overflow-x:hidden;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;}
button{font-family:inherit;color:inherit;border:none;background:none;cursor:pointer;}
.app{max-width:430px;margin:0 auto;background:var(--bg);min-height:100dvh;position:relative;overflow:hidden;}

/* ============ TOP BAR ============ */
.topbar{position:sticky;top:0;z-index:60;background:rgba(11,11,13,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);padding:11px 18px;padding-top:max(11px,env(safe-area-inset-top,0px));display:flex;align-items:center;justify-content:space-between;gap:10px;}
.brand{display:flex;flex-direction:column;gap:2px;min-width:0;}
.brand .kicker{font-family:var(--font-display);font-weight:600;letter-spacing:.3em;font-size:9px;color:var(--muted);text-transform:uppercase;}
.brand .name{font-weight:700;font-size:17px;line-height:1;letter-spacing:.02em;white-space:nowrap;}
.brand .name .hl{color:var(--accent);}
.mini{display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:999px;padding:6px 6px 6px 12px;background:var(--panel);flex:0 0 auto;}
.mini .lbl{font-family:var(--font-display);font-weight:600;font-size:9px;letter-spacing:.18em;color:var(--muted);text-transform:uppercase;line-height:1;}
.mini .num{font-family:var(--font-display);font-weight:700;font-size:17px;line-height:1;font-variant-numeric:tabular-nums;}
.mini .num b{color:var(--passed);}
.mini .num i{color:var(--muted);font-style:normal;}
.mini .ring{width:30px;height:30px;flex:0 0 auto;}
#ringFg{transition:stroke-dashoffset .5s ease;}

/* ============ IDENTITY ROW ============ */
.idrow{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.idname{font-weight:700;font-size:14px;letter-spacing:.02em;}
.idname::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--passed);margin-right:7px;vertical-align:middle;box-shadow:0 0 0 3px rgba(34,197,94,.16);}
.idswitch{font-family:var(--font-display);font-weight:600;font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:5px 11px;background:var(--panel);transition:transform .12s ease,border-color .16s ease;}
.idswitch:active{transform:scale(.95);}
.idswitch:hover{border-color:var(--accent);color:var(--text);}

/* ============ HERO ============ */
.hero{position:relative;padding:20px 18px 20px;overflow:hidden;}
.hero::before{content:"";position:absolute;top:-40px;right:-60px;width:200px;height:200px;background:radial-gradient(circle,rgba(255,90,31,.16),transparent 68%);pointer-events:none;}
.masthead{display:flex;align-items:center;gap:9px;font-family:var(--font-display);font-weight:600;font-size:9.5px;letter-spacing:.24em;color:var(--muted);text-transform:uppercase;margin-bottom:16px;}
.masthead .bar{flex:1;height:1px;background:var(--line);}
.masthead .dot{width:5px;height:5px;background:var(--accent);border-radius:50%;flex:0 0 auto;}
.hero-grid{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;position:relative;}
.hero-num{font-family:var(--font-display);font-weight:700;line-height:.82;letter-spacing:-.01em;font-variant-numeric:tabular-nums;}
.hero-num .big{font-size:84px;display:inline-block;}
.hero-num.big{font-size:84px;}
.hero-num .done{color:var(--accent);}
.hero-num .tot{color:#3f3f46;}
.hero-cap{margin-top:6px;font-family:var(--font-display);font-weight:600;font-size:12px;letter-spacing:.22em;color:var(--muted);text-transform:uppercase;}
.hero-cap b{color:var(--text);}
.hero-pct{text-align:right;padding-bottom:6px;}
.hero-pct .p{font-family:var(--font-display);font-weight:700;font-size:34px;line-height:.9;color:var(--text);font-variant-numeric:tabular-nums;}
.hero-pct .p span:last-child{font-size:18px;color:var(--muted);}
.hero-pct .t{font-family:var(--font-display);font-weight:600;font-size:9.5px;letter-spacing:.2em;color:var(--muted);text-transform:uppercase;margin-top:2px;}

/* segmented tick overview */
.segbar{display:flex;gap:2px;align-items:flex-end;height:32px;margin:16px 0 0;}
.seg{flex:1;border-radius:1.5px;min-width:0;transition:height .3s ease;}
.seg.passed{background:var(--passed);height:100%;}
.seg.pending{background:var(--pending);height:62%;}
.seg.failed{background:var(--failed);height:62%;}
.seg.none{background:#34343b;height:36%;}
.segcap{display:flex;justify-content:space-between;font-family:var(--font-display);font-weight:600;font-size:9px;letter-spacing:.18em;color:#5b5b63;text-transform:uppercase;margin-top:7px;}

/* legend */
.legend{display:grid;grid-template-columns:1fr 1fr;gap:9px 12px;margin-top:18px;}
.leg{display:flex;align-items:center;gap:9px;}
.leg .chip{width:26px;height:26px;flex:0 0 auto;border-radius:8px;display:grid;place-items:center;}
.leg .chip svg{width:15px;height:15px;}
.leg .txt{display:flex;flex-direction:column;line-height:1.1;}
.leg .txt .zh{font-size:12.5px;font-weight:700;}
.leg .txt .en{font-family:var(--font-display);font-weight:600;font-size:9px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;}
.leg.passed .chip{background:rgba(34,197,94,.16);color:var(--passed);}
.leg.pending .chip{background:rgba(245,158,11,.16);color:var(--pending);}
.leg.failed .chip{background:rgba(239,68,68,.16);color:var(--failed);}
.leg.none .chip{background:rgba(82,82,91,.24);color:#8c8c96;}

/* ============ NEXT UP BOARD ============ */
.nextup{margin:8px 18px 4px;border:1px solid var(--line);border-radius:18px;background:var(--panel);overflow:hidden;}
.nextup-h{display:flex;align-items:center;justify-content:space-between;padding:13px 15px;border-bottom:1px solid var(--line);background:linear-gradient(90deg,rgba(255,90,31,.10),transparent);}
.nextup-h .t{display:flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:700;letter-spacing:.16em;font-size:13px;text-transform:uppercase;color:var(--accent);}
.nextup-h .t .pin{width:7px;height:7px;background:var(--accent);border-radius:50%;box-shadow:0 0 0 4px rgba(255,90,31,.18);animation:blink 2s ease-in-out infinite;}
.nextup-h .cnt{font-family:var(--font-display);font-weight:600;font-size:10px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;}
.nu-item{display:flex;align-items:center;gap:11px;width:100%;text-align:left;padding:11px 15px;min-height:54px;border-bottom:1px solid var(--line);transition:background .16s ease,transform .12s ease;}
.nu-item:last-child{border-bottom:none;}
.nu-item:active{transform:scale(.985);background:rgba(255,90,31,.07);}
.nu-tag{font-family:var(--font-display);font-weight:700;font-size:11px;letter-spacing:.1em;color:var(--muted);width:58px;flex:0 0 auto;line-height:1.05;}
.nu-tag b{display:block;color:var(--accent);font-size:15px;letter-spacing:.02em;}
.nu-arrow{color:#4a4a52;flex:0 0 auto;display:grid;place-items:center;}
.nu-arrow svg{width:16px;height:16px;}
.nu-name{font-weight:700;font-size:17px;flex:1;min-width:0;letter-spacing:.01em;}
.nu-go{font-family:var(--font-display);font-weight:600;font-size:9.5px;letter-spacing:.16em;color:var(--accent);text-transform:uppercase;border:1px solid rgba(255,90,31,.4);border-radius:7px;padding:5px 8px;flex:0 0 auto;white-space:nowrap;}

/* ============ SERIES ============ */
.series{padding:32px 0 6px;position:relative;}
.s-head{padding:0 18px;display:flex;align-items:flex-end;gap:12px;}
.s-index{font-family:var(--font-display);font-weight:700;font-size:66px;line-height:.72;color:transparent;-webkit-text-stroke:1.5px #35353d;flex:0 0 auto;font-variant-numeric:tabular-nums;}
.s-titles{flex:1;min-width:0;}
.s-titles .en{font-family:var(--font-display);font-weight:700;font-size:40px;line-height:.86;text-transform:uppercase;letter-spacing:.005em;}
.s-titles .en .sub{color:var(--accent);}
.s-titles .zh{font-size:13px;color:var(--muted);margin-top:3px;letter-spacing:.06em;font-weight:500;}
.s-prog{text-align:right;flex:0 0 auto;padding-bottom:2px;}
.s-prog .frac{font-family:var(--font-display);font-weight:700;font-size:28px;line-height:.9;font-variant-numeric:tabular-nums;}
.s-prog .frac b{color:var(--accent);}
.s-prog .frac i{color:#4f4f57;font-style:normal;}
.s-bar{width:60px;height:5px;background:var(--panel-2);border-radius:999px;margin-top:6px;overflow:hidden;margin-left:auto;}
.s-bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),#ff8a5c);border-radius:999px;transition:width .4s ease;}
.s-rule{display:flex;align-items:center;gap:10px;padding:0 18px;margin:13px 0 15px;font-family:var(--font-display);font-weight:600;letter-spacing:.2em;font-size:9.5px;color:#5b5b63;text-transform:uppercase;}
.s-rule .ln{flex:1;height:1px;background:var(--line);}
.s-rule .sw{color:var(--accent);display:inline-flex;align-items:center;gap:4px;}
.s-rule .sw svg{width:11px;height:11px;}

/* card rail */
.rail-wrap{position:relative;}
.rail-wrap::after{content:"";position:absolute;top:0;right:0;bottom:14px;width:38px;background:linear-gradient(90deg,transparent,var(--bg) 82%);pointer-events:none;z-index:2;}
.rail{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 18px 16px;scrollbar-width:none;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain;}
.rail::-webkit-scrollbar{display:none;}

/* Lv 分組分隔片 */
.lv-div{flex:0 0 auto;scroll-snap-align:start;display:flex;align-items:center;justify-content:center;width:28px;border:1px dashed var(--line);border-radius:12px;margin:4px 0 0;}
.lv-div span{writing-mode:vertical-rl;transform:rotate(180deg);font-family:var(--font-display);font-weight:600;font-size:10.5px;letter-spacing:.26em;color:var(--accent);text-transform:uppercase;white-space:nowrap;}

/* card */
.card{position:relative;scroll-snap-align:start;flex:0 0 auto;width:156px;height:214px;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:14px 13px 13px;display:flex;flex-direction:column;text-align:left;overflow:hidden;transition:transform .16s cubic-bezier(.2,.7,.3,1),border-color .16s ease,box-shadow .16s ease;}
.card:active{transform:scale(.965);}
.card-bar{position:absolute;left:0;top:0;height:5px;width:100%;background:var(--st,var(--none));}
.card-top{display:flex;align-items:center;justify-content:space-between;margin-top:4px;}
.card-no{font-family:var(--font-display);font-weight:600;font-size:13px;color:#6b6b73;letter-spacing:.08em;font-variant-numeric:tabular-nums;}
.card-no .card-lv{font-style:normal;font-size:9.5px;letter-spacing:.14em;color:var(--accent);opacity:.9;margin-left:6px;}
.card-ic{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;color:var(--st,var(--none));}
.card-ic svg{width:18px;height:18px;}
.card-name{font-weight:700;font-size:22px;line-height:1.14;margin-top:auto;letter-spacing:.01em;color:var(--text);}
.card-tag{margin-top:11px;display:inline-flex;align-items:center;gap:6px;align-self:flex-start;padding:5px 9px 5px 8px;border-radius:8px;color:var(--st,var(--none));max-width:100%;}
.card-tag svg{width:13px;height:13px;flex:0 0 auto;}
.card-tag .zh{font-weight:700;font-size:11.5px;letter-spacing:.02em;white-space:nowrap;}
.card-tag .en{font-family:var(--font-display);font-weight:600;font-size:9px;letter-spacing:.14em;opacity:.75;text-transform:uppercase;white-space:nowrap;}

/* status skins */
.st-passed{--st:var(--passed);border-color:rgba(34,197,94,.42);background:linear-gradient(178deg,rgba(34,197,94,.14),rgba(34,197,94,.02) 46%,var(--panel));}
.st-passed .card-ic{background:rgba(34,197,94,.16);}
.st-passed .card-tag{background:rgba(34,197,94,.14);}
.st-pending{--st:var(--pending);border-color:rgba(245,158,11,.4);background:linear-gradient(178deg,rgba(245,158,11,.11),var(--panel) 52%);}
.st-pending .card-ic{background:rgba(245,158,11,.16);}
.st-pending .card-tag{background:rgba(245,158,11,.14);}
.st-failed{--st:var(--failed);border-color:rgba(239,68,68,.46);background:linear-gradient(178deg,rgba(239,68,68,.13),var(--panel) 52%);}
.st-failed .card-ic{background:rgba(239,68,68,.16);}
.st-failed .card-tag{background:rgba(239,68,68,.15);}
.st-none{--st:var(--none);}
.st-none .card-ic{background:rgba(82,82,91,.24);color:#8c8c96;}
.st-none .card-tag{background:rgba(82,82,91,.2);color:#a5a5ad;}
.st-none .card-name{color:#d4d4d8;}
.st-none .card-bar{background:#3a3a42;}

/* mastery stamp */
.stamp{position:absolute;right:9px;bottom:11px;transform:rotate(-13deg);border:1.8px solid var(--passed);color:var(--passed);border-radius:7px;padding:3px 6px 2px;display:flex;flex-direction:column;align-items:center;line-height:1;opacity:.92;pointer-events:none;}
.stamp .z{font-weight:900;font-size:14px;letter-spacing:.04em;}
.stamp .e{font-family:var(--font-display);font-weight:700;font-size:7.5px;letter-spacing:.18em;margin-top:1px;}
/* failed corner flag */
.flag{position:absolute;top:12px;right:12px;width:22px;height:22px;border-radius:50%;background:var(--failed);color:#fff;display:grid;place-items:center;font-weight:900;font-size:14px;box-shadow:0 0 0 4px rgba(239,68,68,.16);}

/* NEXT card */
.is-next{--st:var(--accent);border-color:var(--accent);background:linear-gradient(176deg,rgba(255,90,31,.2),rgba(255,90,31,.03) 54%,var(--panel));box-shadow:0 10px 34px -14px rgba(255,90,31,.75);animation:nextpulse 2.6s ease-in-out infinite;}
.is-next .card-bar{background:var(--accent);}
.is-next .card-ic{background:rgba(255,90,31,.2);color:var(--accent);}
.is-next .card-name{color:var(--text);}
.is-next .card-tag{background:var(--accent);color:#120a06;}
.is-next .card-tag .en{opacity:.7;}
.next-rib{position:absolute;top:12px;right:12px;display:inline-flex;align-items:center;gap:4px;background:var(--accent);color:#120a06;font-family:var(--font-display);font-weight:700;font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;padding:3px 7px;border-radius:6px;}
.next-rib svg{width:10px;height:10px;}

@keyframes nextpulse{0%,100%{box-shadow:0 10px 34px -14px rgba(255,90,31,.55),0 0 0 0 rgba(255,90,31,.0);}50%{box-shadow:0 10px 34px -14px rgba(255,90,31,.85),0 0 20px 0 rgba(255,90,31,.28);}}
@keyframes blink{0%,100%{opacity:1;}50%{opacity:.35;}}

/* ============ FOOTER ============ */
.colophon{margin-top:26px;padding:22px 18px calc(30px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--line);text-align:center;}
.colophon .big{font-family:var(--font-display);font-weight:700;font-size:30px;letter-spacing:.02em;line-height:.95;color:#26262c;}
.colophon .meta{font-family:var(--font-display);font-weight:600;font-size:9.5px;letter-spacing:.22em;color:#5b5b63;text-transform:uppercase;margin-top:10px;}

/* ============ SHEET ============ */
.backdrop{position:fixed;inset:0;background:rgba(0,0,0,.62);backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:100;}
.backdrop.open{opacity:1;visibility:visible;}
.sheet{position:fixed;left:50%;bottom:0;transform:translateX(-50%) translateY(102%);width:100%;max-width:430px;background:var(--panel);border-top-left-radius:24px;border-top-right-radius:24px;border-top:1px solid var(--line);box-shadow:0 -20px 60px -20px rgba(0,0,0,.7);padding:10px 20px calc(26px + env(safe-area-inset-bottom,0px));z-index:101;transition:transform .3s cubic-bezier(.2,.85,.25,1);max-height:92dvh;overflow-y:auto;}
.sheet.open{transform:translateX(-50%) translateY(0);}
.grab{width:38px;height:4px;background:#3a3a42;border-radius:999px;margin:2px auto 14px;}
.sheet-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;}
.sh-kick{font-family:var(--font-display);font-weight:600;font-size:10px;letter-spacing:.22em;color:var(--muted);text-transform:uppercase;}
.sh-name{font-weight:900;font-size:30px;line-height:1.05;margin-top:3px;letter-spacing:.01em;}
.sh-close{width:44px;height:44px;flex:0 0 auto;border-radius:12px;background:var(--panel-2);display:grid;place-items:center;color:var(--muted);transition:transform .12s ease,background .16s ease;margin:-4px -6px 0 0;}
.sh-close:active{transform:scale(.9);}
.sh-close svg{width:18px;height:18px;}
.sh-status{display:inline-flex;align-items:center;gap:7px;margin-top:14px;padding:7px 12px;border-radius:10px;font-weight:700;font-size:13px;}
.sh-status svg{width:16px;height:16px;}
.sh-status .en{font-family:var(--font-display);font-weight:600;font-size:10px;letter-spacing:.16em;text-transform:uppercase;opacity:.8;}
.sh-note{margin-top:14px;font-size:13.5px;line-height:1.6;color:#c9c9cf;background:var(--panel-2);border:1px solid var(--line);border-left-width:3px;border-radius:12px;padding:12px 14px;}
.sh-note.coach{border-left-color:var(--failed);}
.sh-note .h{display:block;font-family:var(--font-display);font-weight:700;font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:5px;}
.dropzone{display:block;margin-top:16px;border:1.5px dashed #3d3d45;border-radius:16px;padding:24px 16px;text-align:center;background:var(--panel-2);transition:border-color .18s ease,background .18s ease;cursor:pointer;}
.dropzone.has-file{border-color:var(--accent);background:rgba(255,90,31,.06);}
.dropzone input{display:none;}
.dropzone .ic{width:46px;height:46px;margin:0 auto;border-radius:14px;background:rgba(255,90,31,.14);color:var(--accent);display:grid;place-items:center;}
.dropzone .ic svg{width:24px;height:24px;}
.dropzone .t1{font-weight:700;font-size:15px;margin-top:11px;word-break:break-all;}
.dropzone .t2{font-size:12px;color:var(--muted);margin-top:3px;}
.sh-note-input{width:100%;margin-top:12px;background:var(--panel-2);border:1px solid var(--line);color:var(--text);border-radius:12px;padding:11px 12px;font-size:14px;font-family:inherit;resize:vertical;min-height:46px;}
.sh-note-input::placeholder{color:#6b6b73;}
.sh-cta{width:100%;min-height:52px;margin-top:16px;border-radius:14px;background:var(--accent);color:#fff;font-weight:800;font-size:16px;letter-spacing:.02em;display:flex;align-items:center;justify-content:center;gap:9px;transition:transform .12s ease,filter .16s ease,opacity .16s ease;}
.sh-cta:active{transform:scale(.98);filter:brightness(1.05);}
.sh-cta svg{width:19px;height:19px;}
.sh-cta.ghost{background:var(--panel-2);color:var(--text);border:1px solid var(--line);}
.sh-cta.done{background:rgba(34,197,94,.16);color:var(--passed);pointer-events:none;}
.sh-cta:disabled{opacity:.45;pointer-events:none;}
.sh-sub{text-align:center;font-size:11.5px;color:#6b6b73;margin-top:12px;letter-spacing:.02em;}

/* 上傳進度條 */
.up-bar{position:relative;height:34px;background:var(--panel-2);border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:12px 0 10px;}
.up-bar i{position:absolute;left:0;top:0;bottom:0;width:0%;background:linear-gradient(90deg,rgba(255,90,31,.55),var(--accent));transition:width .3s ease;}
.up-bar span{position:relative;display:flex;align-items:center;justify-content:center;height:100%;font-size:12.5px;font-weight:700;color:var(--text);letter-spacing:.03em;}

/* 載入失敗重試 */
.load-err{margin:30px 18px;padding:22px;text-align:center;background:var(--panel);border:1px solid var(--line);border-radius:16px;color:var(--muted);font-size:14px;line-height:1.7;}
.load-err button{display:block;margin:12px auto 0;background:var(--accent);color:#fff;border:0;border-radius:999px;padding:10px 22px;font-size:14px;font-weight:700;cursor:pointer;}

/* 我的挑戰紀錄（歷次上傳） */
.sh-history{margin-top:16px;border-top:1px dashed var(--line);padding-top:13px;}
.sh-history .h{font-family:var(--font-display);font-weight:700;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:9px;display:flex;align-items:center;justify-content:space-between;}
.sh-history .h .en{font-weight:600;color:#6b6b73;}
.hist-item{border:1px solid var(--line);border-radius:12px;background:var(--panel-2);margin-bottom:9px;overflow:hidden;}
.hist-head{display:flex;align-items:center;gap:10px;width:100%;padding:11px 13px;background:none;border:0;color:var(--text);font-family:inherit;font-size:13px;text-align:left;cursor:pointer;}
.hist-head .d{font-family:var(--font-display);font-weight:600;font-size:12.5px;letter-spacing:.06em;color:var(--muted);font-variant-numeric:tabular-nums;}
.hist-head .st{font-weight:700;font-size:11.5px;padding:3px 8px;border-radius:7px;}
.hist-head .st.st-pass{color:var(--passed);background:rgba(34,197,94,.14);}
.hist-head .st.st-pending{color:var(--pending);background:rgba(245,158,11,.14);}
.hist-head .st.st-fail{color:var(--failed);background:rgba(239,68,68,.14);}
.hist-head .play{margin-left:auto;font-family:var(--font-display);font-weight:600;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);border:1px solid rgba(255,90,31,.4);border-radius:999px;padding:4px 10px;white-space:nowrap;}
.hist-coach{margin:0 13px 11px;font-size:13px;line-height:1.55;color:#c9c9cf;background:rgba(255,90,31,.07);border-left:3px solid var(--accent);border-radius:8px;padding:8px 11px;}
.hist-coach b{display:inline-block;font-size:10.5px;color:var(--accent);margin-right:7px;font-weight:700;}
.hist-video video{display:block;width:100%;max-height:340px;background:#000;}

/* ============ WHO DIALOG (身分 stub) ============ */
dialog{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:18px;padding:22px;width:min(420px,92vw);}
dialog::backdrop{background:rgba(0,0,0,.62);backdrop-filter:blur(2px);}
dialog h3{margin:0 0 6px;font-size:20px;font-weight:900;}
dialog .hint{margin:0 0 16px;font-size:13px;color:var(--muted);}
dialog input[type=text]{width:100%;background:var(--panel-2);border:1px solid var(--line);color:var(--text);border-radius:12px;padding:12px;font-size:15px;font-family:inherit;}
.who-list{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 12px;}
.who-list:empty{display:none;}
.who-chip{background:var(--panel-2);color:var(--text);border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:14px;cursor:pointer;}
.who-chip:hover{border-color:var(--accent);}
.who-loading{color:var(--muted);font-size:13px;}
dialog menu{display:flex;justify-content:flex-end;gap:10px;margin:20px 0 0;padding:0;}
.btn-primary,.btn-ghost{border-radius:10px;padding:10px 18px;font-size:14px;font-weight:700;cursor:pointer;border:1px solid transparent;}
.btn-primary{background:var(--accent);color:#fff;}
.btn-ghost{background:transparent;color:var(--muted);border-color:var(--line);}

/* ============ TOAST ============ */
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:#fff;color:#111;padding:12px 20px;border-radius:999px;font-size:14px;font-weight:700;box-shadow:0 10px 30px rgba(0,0,0,.4);z-index:200;max-width:88vw;text-align:center;}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important;}
}

/* ============ 桌機 / 寬螢幕：把手機版包成「手機預覽外框」 ============
   學生實際都用手機（滿版）；此段只在 ≥600px 生效，手機版完全不受影響。 */
@media (min-width:600px){
  html,body{
    background:
      radial-gradient(115% 52% at 50% -8%, rgba(255,90,31,.10), transparent 58%),
      radial-gradient(100% 85% at 50% 42%, #17171c 0%, #0b0b0d 64%);
    background-attachment:fixed;
  }
  body{min-height:100dvh;padding:38px 0 52px;}
  .app{
    min-height:auto;
    border:1px solid var(--line);
    border-radius:36px;
    box-shadow:0 44px 110px -36px rgba(0,0,0,.92), 0 0 0 7px rgba(255,255,255,.02);
  }
  /* 外框內：topbar 不再黏瀏覽器頂端（否則會跑出圓角外框） */
  .topbar{position:static;border-radius:36px 36px 0 0;}
  /* 底部彈窗 sheet 對齊外框寬度並帶圓角、浮起，不要貼滿整個瀏覽器底 */
  .backdrop{background:rgba(0,0,0,.5);}
  .sheet{max-width:430px;border-radius:24px;bottom:24px;box-shadow:0 30px 80px -20px rgba(0,0,0,.8);transform:translateX(-50%) translateY(calc(100% + 60px));}
  .sheet.open{transform:translateX(-50%) translateY(0);}
}

/* ==================================================================
   教練示範影片（2026-09-08，老闆選 B 案：動作卡片內直接嵌播放器）
   ================================================================== */

/* 技能樹卡片角標：這個動作有示範片。
   右上被 .flag / .next-rib 佔、右下被 .stamp 佔，所以錯開放在右上偏下 */
.demo-pip{
  position:absolute;top:38px;right:11px;
  width:20px;height:20px;border-radius:50%;
  background:rgba(255,90,31,.92);color:#fff;
  display:grid;place-items:center;pointer-events:none;
  box-shadow:0 2px 8px -2px rgba(255,90,31,.7);
}
.demo-pip svg{width:9px;height:9px;margin-left:1.5px;}

/* 動作卡片內：狀態下方、上傳區上方 */
.demo-embed{margin-top:14px;}
.demo-lbl{
  font-family:var(--font-display);font-weight:700;font-size:10px;
  letter-spacing:.16em;text-transform:uppercase;color:var(--accent);
  margin-bottom:8px;
}
.demo-player{
  display:block;width:100%;max-height:320px;
  border-radius:14px;background:#000;border:1px solid var(--line);
}
.demo-angles{display:flex;gap:6px;margin-top:9px;}
.demo-angle{
  flex:1;text-align:center;background:var(--panel-2);
  border:1px solid var(--line);border-radius:9px;padding:7px 4px;
  font-family:inherit;font-size:12px;font-weight:700;color:var(--muted);
  cursor:pointer;transition:border-color .16s ease,color .16s ease,background .16s ease;
}
.demo-angle.on{border-color:rgba(255,90,31,.5);color:var(--accent);background:rgba(255,90,31,.1);}
.demo-angle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}