/* =========================================================
   دليل التمارين العلاجية — الهوية الطبية
   الخط: Arial (بدون عريض) | أزرق طبي | Mobile-first | وضع داكن
   ========================================================= */
@font-face{font-family:"ArialSite";src:url("fonts/arial.woff") format("woff");font-weight:400;font-style:normal;font-display:swap}

:root{
  --font:"ArialSite",Arial,"Helvetica Neue",Helvetica,Tahoma,sans-serif;
  --fs:18px;

  /* اللون الأساسي — زيتي (الافتراضي). تُغيَّر من صفحة الإعدادات عبر data-palette */
  --primary:#0f5f58; --primary-700:#0b4a45; --accent:#14a393; --intro-a:#10433f; --intro-b:#082a27; --intro-c:#041816;
  --primary-50:color-mix(in srgb,var(--primary) 7%,#fff); --primary-100:color-mix(in srgb,var(--primary) 16%,#fff); --p-ink:var(--primary);
  --teal:var(--accent);
  --bg:#f3f6f6; --surface:#ffffff; --surface-2:#f8faf9;
  --ink:#0d1f1f; --ink-2:#324644; --muted:#5b6e6c;
  --line:#dce5e3; --line-2:#c7d3d1; --ring:color-mix(in srgb,var(--primary) 30%,transparent);
  --red:#c62828; --red-50:#fdecec; --red-line:#f5c2c2;
  --amber:#8a5a00; --amber-50:#fff7e6; --amber-line:#f3dcaa;
  --ok:#15803d;
  --fig:color-mix(in srgb,var(--primary) 16%,#e8eeed); --grid-line:color-mix(in srgb,var(--primary) 7%,transparent);
  --media-bg:#eceff0;
  --shadow-sm:0 1px 2px rgba(13,31,31,.05);
  --shadow:0 1px 2px rgba(13,31,31,.05),0 10px 28px -14px rgba(13,31,31,.22);
  --shadow-lg:0 24px 60px -20px rgba(13,31,31,.4);
  --c-neck:#0e8f84; --c-shoulder:#46699c; --c-back:#b0741a; --c-leg:#55833a; --c-ankle:#a94e67; --c-all:var(--primary);
  --font-head:"IBM Plex Sans Arabic",var(--font); --hw:600;
  --r-sm:8px; --r:12px; --r-lg:16px; --r-xl:20px;
  --top-h:62px; --head-h:65px; --tab-h:66px;
  --safe-b:env(safe-area-inset-bottom,0px);
  color-scheme:light;
}
:root[data-palette="blue"]{--primary:#0b5cad;--primary-700:#094a8c;--accent:#0e9f9a;--intro-a:#0f3a6b;--intro-b:#072447;--intro-c:#04172e}
:root[data-palette="navy"]{--primary:#1e3a6e;--primary-700:#162c54;--accent:#3b82f6;--intro-a:#1b3561;--intro-b:#0f2140;--intro-c:#081326}
:root[data-palette="burgundy"]{--primary:#8a1c3b;--primary-700:#6e1630;--accent:#d9466f;--intro-a:#5a1428;--intro-b:#3a0c1a;--intro-c:#22070f}
:root[data-palette="teal"]{--primary:#0e7c86;--primary-700:#0a616a;--accent:#22b8c4;--intro-a:#0d4a52;--intro-b:#072f34;--intro-c:#041b1e}
:root[data-size="lg"]{--fs:20px}
:root[data-size="xl"]{--fs:22px}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0a1414; --surface:#101c1c; --surface-2:#142322; --ink:#e6f0ef; --ink-2:#c1d1cf; --muted:#8aa19e;
    --line:#1e2e2d; --line-2:#2a3e3c;
    --primary-50:color-mix(in srgb,var(--primary) 22%,#0a1414); --primary-100:color-mix(in srgb,var(--primary) 38%,#0a1414); --p-ink:color-mix(in srgb,var(--primary) 45%,#fff);
    --red:#f87171; --red-50:#2a1416; --red-line:#4a2224; --amber:#f5c56b; --amber-50:#2a2110; --amber-line:#4a3a18; --ok:#4ade80;
    --fig:color-mix(in srgb,var(--primary) 35%,#1a2a29); --grid-line:color-mix(in srgb,var(--primary) 18%,transparent); --media-bg:#172221;
    --shadow-sm:0 1px 2px rgba(0,0,0,.4); --shadow:0 10px 28px -14px rgba(0,0,0,.7); --shadow-lg:0 24px 60px -20px rgba(0,0,0,.85);
    --c-neck:#3fcabb; --c-shoulder:#8fb0e0; --c-back:#e3b05e; --c-leg:#9cc97a; --c-ankle:#e397ad; --c-all:var(--p-ink);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0a1414; --surface:#101c1c; --surface-2:#142322; --ink:#e6f0ef; --ink-2:#c1d1cf; --muted:#8aa19e;
  --line:#1e2e2d; --line-2:#2a3e3c;
  --primary-50:color-mix(in srgb,var(--primary) 22%,#0a1414); --primary-100:color-mix(in srgb,var(--primary) 38%,#0a1414); --p-ink:color-mix(in srgb,var(--primary) 45%,#fff);
  --red:#f87171; --red-50:#2a1416; --red-line:#4a2224; --amber:#f5c56b; --amber-50:#2a2110; --amber-line:#4a3a18; --ok:#4ade80;
  --fig:color-mix(in srgb,var(--primary) 35%,#1a2a29); --grid-line:color-mix(in srgb,var(--primary) 18%,transparent); --media-bg:#172221;
  --shadow-sm:0 1px 2px rgba(0,0,0,.4); --shadow:0 10px 28px -14px rgba(0,0,0,.7); --shadow-lg:0 24px 60px -20px rgba(0,0,0,.85);
  --c-neck:#3fcabb; --c-shoulder:#8fb0e0; --c-back:#e3b05e; --c-leg:#9cc97a; --c-ankle:#e397ad; --c-all:var(--p-ink);
  color-scheme:dark;
}
[data-cat="neck"]{--c:var(--c-neck)} [data-cat="shoulder"]{--c:var(--c-shoulder)} [data-cat="back"]{--c:var(--c-back)}
[data-cat="leg"]{--c:var(--c-leg)} [data-cat="ankle"]{--c:var(--c-ankle)} [data-cat="all"]{--c:var(--c-all)}

*,*::before,*::after{box-sizing:border-box}
html{font-size:var(--fs);-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--head-h) + 64px);font-synthesis:none}
body{margin:0;font-family:var(--font);font-weight:400;font-size:1rem;line-height:1.65;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;padding-bottom:calc(var(--tab-h) + var(--safe-b));overflow-x:hidden}
body.lock{overflow:hidden}
b,strong,h1,h2,h3,h4,th,dt,summary,output,button,label{font-weight:400}
img,video,svg{display:block;max-width:100%}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0;-webkit-tap-highlight-color:transparent}
a{color:inherit;text-decoration:none;-webkit-tap-highlight-color:transparent}
h1,h2,h3,h4{margin:0;line-height:1.3;text-wrap:balance}
p{margin:0}
[hidden]{display:none!important}
svg use{pointer-events:none}
:focus-visible{outline:3px solid var(--ring);outline-offset:2px;border-radius:8px}
.wrap{width:min(1200px,100% - 32px);margin-inline:auto}
.skip{position:absolute;inset-inline-start:12px;top:-60px;z-index:100;background:var(--primary);color:#fff;padding:10px 16px;border-radius:10px}
.skip:focus{top:10px}

/* ---------- Header ---------- */
.topbar{position:sticky;top:env(safe-area-inset-top,0px);z-index:40;background:var(--surface);border-top:3px solid var(--primary);border-bottom:1px solid var(--line);transition:box-shadow .3s}
.topbar.scrolled{box-shadow:0 8px 24px -18px rgba(13,31,31,.5)}
.topbar-in{height:var(--top-h);display:flex;align-items:center;gap:12px;width:min(1200px,100% - 24px);margin-inline:auto}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{width:38px;height:38px;flex:none;color:var(--primary)}
.brand-mark svg{width:100%;height:100%}
.brand-txt{display:flex;flex-direction:column;min-width:0;line-height:1.25}
.brand-txt b{font-size:1rem;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-txt small{font-size:.7rem;color:var(--muted)}
.deck-nav{display:none}
.top-actions{margin-inline-start:auto;display:flex;gap:4px}
.icon-btn{width:44px;height:44px;border-radius:10px;display:grid;place-items:center;color:var(--ink-2);position:relative;transition:background .2s,color .2s}
.icon-btn:hover{background:var(--primary-50);color:var(--p-ink)}
.icon-btn svg{width:22px;height:22px}
.icon-btn.sm{width:40px;height:40px}
.icon-btn.solid{background:var(--primary);color:#fff}
.icon-btn.solid:hover{background:var(--primary-700);color:#fff}
.size-dots{position:absolute;bottom:5px;display:flex;gap:2px}
.size-dots i{width:4px;height:4px;border-radius:50%;background:var(--line-2)}
.size-dots i:first-child,:root[data-size="lg"] .size-dots i:nth-child(-n+2),:root[data-size="xl"] .size-dots i{background:var(--primary)}
.edu-bar{background:var(--primary-50);border-top:1px solid var(--primary-100);color:var(--p-ink)}
.edu-in{width:min(1200px,100% - 24px);margin-inline:auto;display:flex;align-items:center;gap:8px;padding:6px 0;font-size:.74rem;line-height:1.5}
.edu-in svg{width:16px;height:16px;flex:none}

/* ---------- Tab bar ---------- */
.tabbar{position:fixed;inset-inline:0;bottom:0;z-index:45;display:grid;grid-template-columns:repeat(3,1fr);height:calc(var(--tab-h) + var(--safe-b));padding-bottom:var(--safe-b);background:var(--surface);border-top:1px solid var(--line)}
.tabbar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--muted);font-size:.74rem;position:relative}
.tabbar a svg{width:25px;height:25px;transition:transform .25s}
.tabbar a.on{color:var(--p-ink)}
.tabbar a.on::before{content:"";position:absolute;top:0;width:40px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);animation:barIn .35s cubic-bezier(.2,.8,.2,1)}
@keyframes barIn{from{width:0}}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--surface);border-bottom:1px solid var(--line);padding:26px 0 46px;overflow:hidden;
  background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);background-size:24px 24px}
.hero-grid{display:grid;gap:22px;position:relative;z-index:1}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:.8rem;color:var(--p-ink);background:var(--primary-50);border:1px solid var(--primary-100);padding:5px 12px;border-radius:999px}
.live-dot{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 0 color-mix(in srgb,var(--accent) 60%,transparent);animation:live 2s infinite}
@keyframes live{70%{box-shadow:0 0 0 9px transparent}100%{box-shadow:0 0 0 0 transparent}}
.hero h1{font-size:clamp(1.9rem,6.4vw,3rem);color:var(--ink);margin:14px 0 8px;letter-spacing:-.01em}
.lead{color:var(--muted);font-size:1rem;max-width:36rem;line-height:1.8}
.search{display:flex;align-items:center;gap:10px;background:var(--surface);border:1.5px solid var(--line-2);border-radius:var(--r);padding:0 14px;height:52px;transition:border-color .2s,box-shadow .2s}
.search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px var(--ring)}
.search svg{width:21px;height:21px;color:var(--muted);flex:none}
.search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:1rem;height:100%}
.search input::placeholder{color:#8a9aac}
.search.big{margin-top:18px;height:58px;box-shadow:var(--shadow)}
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin:18px 0 0;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);overflow:hidden;max-width:32rem}
.facts div{padding:10px 12px;text-align:center}
.facts div+div{border-inline-start:1px solid var(--line)}
.facts dt{font-size:1.35rem;color:var(--p-ink);line-height:1.2;font-variant-numeric:tabular-nums}
.facts dd{margin:2px 0 0;font-size:.74rem;color:var(--muted)}
.ecg{position:absolute;inset-inline:0;bottom:4px;width:100%;height:44px;z-index:0;pointer-events:none}
.ecg path{fill:none;stroke:var(--teal);stroke-width:2;stroke-linejoin:round;stroke-linecap:round;opacity:.45;stroke-dasharray:1500;stroke-dashoffset:1500;animation:ecg 4.5s linear infinite}
@keyframes ecg{0%{stroke-dashoffset:1500}60%{stroke-dashoffset:0;opacity:.45}100%{stroke-dashoffset:0;opacity:0}}

/* ---------- Anatomy card ---------- */
.anat-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:14px;box-shadow:var(--shadow)}
.anat-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px;padding-bottom:10px;margin-bottom:10px;border-bottom:1px solid var(--line)}
.anat-head h2{font-size:1.05rem}
.anat-head span{font-size:.74rem;color:var(--muted)}
.anat-body{display:grid;grid-template-columns:1fr 112px;gap:12px;align-items:center}
.figure{width:100%;height:auto;max-height:300px;order:2;overflow:visible;padding:8px;border-radius:var(--r);border:1px dashed var(--line-2);
  background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);background-size:12px 12px}
.fig-neutral{fill:var(--fig)}
.fig-part{fill:var(--fig);stroke:var(--surface);stroke-width:2.5;cursor:pointer;transition:fill .3s,opacity .3s}
.fig-part:hover,.fig-part.hl{fill:color-mix(in srgb,var(--c) 45%,var(--fig))}
.figure[data-active]:not([data-active="all"]) .fig-part:not(.on):not(.hl):not(:hover){opacity:.55}
.fig-part.on{fill:var(--c);animation:partPop .45s cubic-bezier(.3,1.5,.5,1);transform-box:fill-box;transform-origin:center}
@keyframes partPop{40%{transform:scale(1.05)}}
.hotspots circle{fill:var(--surface);stroke:var(--primary);stroke-width:2;animation:hs 2.4s ease-in-out infinite;transform-box:fill-box;transform-origin:center;pointer-events:none}
.hotspots circle:nth-child(2){animation-delay:.3s}.hotspots circle:nth-child(3){animation-delay:.6s}.hotspots circle:nth-child(4){animation-delay:.9s}.hotspots circle:nth-child(5){animation-delay:1.2s}
@keyframes hs{50%{transform:scale(1.35);opacity:.55}}
.regions{display:flex;flex-direction:column;gap:6px}
.region{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;border:1px solid var(--line);background:var(--surface-2);text-align:start;min-height:46px;transition:border-color .2s,background .2s,transform .2s}
.region i{width:10px;height:10px;border-radius:3px;background:var(--c);flex:none}
.region b{font-size:.88rem;flex:1;line-height:1.3}
.region small{font-size:.74rem;color:var(--muted);font-variant-numeric:tabular-nums}
.region:hover{border-color:var(--c);transform:translateX(-3px)}
.region[aria-checked="true"]{border-color:var(--c);background:color-mix(in srgb,var(--c) 9%,var(--surface));box-shadow:inset -3px 0 0 var(--c)}
.region[aria-checked="true"] small{color:var(--c)}

/* ---------- How to use ---------- */
.how3{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:8px}
.how3 li{display:flex;gap:12px;align-items:center;padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r)}
.how-ico{flex:none;width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:var(--primary-50);color:var(--p-ink)}
.how-ico svg{width:22px;height:22px}
.how3 b{display:block;font-size:.95rem}
.how3 small{display:block;font-size:.8rem;color:var(--muted);line-height:1.6}

/* ---------- Toolbar ---------- */
.toolbar{position:sticky;top:calc(env(safe-area-inset-top,0px) + var(--head-h) - 1px);z-index:30;margin-top:18px;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .2s}
.toolbar.stuck{border-bottom-color:var(--line)}
.toolbar-in{display:flex;align-items:center;gap:8px;padding:10px 0}
.chips{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;flex:1;padding:2px}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 14px;border-radius:10px;border:1px solid var(--line);background:var(--surface);font-size:.86rem;color:var(--ink-2);white-space:nowrap;transition:all .2s}
.chip i{width:8px;height:8px;border-radius:2px;background:var(--c)}
.chip em{font-style:normal;font-size:.72rem;color:var(--muted);font-variant-numeric:tabular-nums}
.chip:hover{border-color:var(--c)}
.chip[aria-selected="true"]{background:var(--c);border-color:var(--c);color:#fff}
.chip[aria-selected="true"] i{background:#fff}
.chip[aria-selected="true"] em{color:rgba(255,255,255,.85)}
.tb-side{display:flex;gap:2px;flex:none}
#filterBtn.on{background:var(--primary-50);color:var(--p-ink)}
.fbadge{position:absolute;top:3px;inset-inline-end:3px;min-width:17px;height:17px;border-radius:9px;background:var(--primary);color:#fff;font-size:.62rem;font-style:normal;display:grid;place-items:center;padding:0 4px}

/* ---------- Filters ---------- */
.fpanel{margin:6px 0 14px;padding:16px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);box-shadow:var(--shadow);display:grid;gap:14px;animation:rise .3s cubic-bezier(.2,.8,.2,1)}
.fgroup h4{margin:0 0 8px;font-size:.82rem;color:var(--muted)}
.fopts{display:flex;flex-wrap:wrap;gap:6px}
.fchip{height:40px;padding:0 14px;border-radius:10px;border:1px solid var(--line);background:var(--surface-2);font-size:.88rem;color:var(--ink-2);transition:all .2s}
.fchip em{font-style:normal;font-size:.72rem;color:var(--muted);margin-inline-start:4px}
.fchip[aria-pressed="true"]{border-color:var(--primary);background:var(--primary-50);color:var(--p-ink);box-shadow:inset 0 0 0 1px var(--primary)}
.ffoot{display:flex;justify-content:space-between;align-items:center;gap:10px;border-top:1px solid var(--line);padding-top:12px}
.ffoot .link-btn:disabled{opacity:.4}

/* ---------- Library ---------- */
.library{padding:6px 0 10px}
.results-head{display:flex;align-items:flex-end;justify-content:space-between;gap:10px;margin:6px 0 14px}
.results-head h2{font-size:1.3rem}
.results-head p{color:var(--muted);font-size:.84rem;margin-top:2px}
.ghost-btn{white-space:nowrap;flex:none;display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:10px;border:1px solid var(--line);background:var(--surface);font-size:.84rem;color:var(--p-ink)}
.ghost-btn svg{width:18px;height:18px}
.link-btn{color:var(--p-ink);font-size:.86rem;padding:6px 8px;border-radius:8px}
.link-btn:hover{background:var(--primary-50)}

.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;cursor:pointer;
  transition:transform .25s cubic-bezier(.2,.8,.2,1),box-shadow .25s,border-color .25s;animation:rise .45s both cubic-bezier(.2,.8,.2,1);animation-delay:calc(var(--i,0) * 20ms)}
@keyframes rise{from{opacity:0;transform:translateY(10px)}}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:color-mix(in srgb,var(--c) 45%,var(--line))}
.card:active{transform:scale(.985)}
.card .media{position:relative;aspect-ratio:4/3;background:var(--media-bg);overflow:hidden;border-bottom:1px solid var(--line)}
.card .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s,opacity .4s}
.card:hover .media img{transform:scale(1.03)}
.code{position:absolute;top:8px;inset-inline-start:8px;background:rgba(255,255,255,.94);color:#0b1f33;font-size:.7rem;padding:3px 7px;border-radius:6px;direction:ltr;letter-spacing:.04em;border:1px solid rgba(11,31,51,.08)}
.dur{position:absolute;bottom:8px;inset-inline-start:8px;background:rgba(11,31,51,.78);color:#fff;font-size:.7rem;padding:2px 7px;border-radius:6px;direction:ltr}
.play-ico{position:absolute;inset:0;margin:auto;width:50px;height:50px;border-radius:50%;background:rgba(255,255,255,.96);color:var(--primary);display:grid;place-items:center;box-shadow:0 8px 22px rgba(11,31,51,.2);opacity:0;transform:scale(.85);transition:all .25s}
.play-ico svg{width:22px;height:22px;margin-left:3px}
.card:hover .play-ico,.card:focus-visible .play-ico{opacity:1;transform:scale(1)}
.card .body{padding:10px 12px 12px;display:flex;flex-direction:column;gap:4px}
.tagrow{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:.7rem;color:var(--c);background:color-mix(in srgb,var(--c) 10%,transparent);padding:2px 8px;border-radius:6px;white-space:nowrap}
.tag::before{content:"";width:6px;height:6px;border-radius:2px;background:currentColor}
.lvl{font-size:.68rem;padding:2px 7px;border-radius:6px;border:1px solid var(--line);color:var(--muted);white-space:nowrap}
.lvl-2{color:var(--amber);border-color:var(--amber-line);background:var(--amber-50)}
.card h3{font-size:1rem;line-height:1.4;overflow-wrap:anywhere;margin-top:2px}
.card .en{font-size:.76rem;color:var(--muted);direction:ltr;text-align:end;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card .cmeta{font-size:.74rem;color:var(--muted)}
.grid.list{grid-template-columns:1fr;gap:8px}
.grid.list .card{display:grid;grid-template-columns:120px minmax(0,1fr);align-items:stretch}
.grid.list .card .media{aspect-ratio:auto;height:auto;min-height:96px;border-bottom:0;border-inline-end:1px solid var(--line)}
.grid.list .card .media img{position:absolute;inset:0}
.grid.list .card .body{align-self:center;padding:10px 12px}
.grid.list .code{font-size:.64rem;top:6px;inset-inline-start:6px}
.grid.list .play-ico{width:38px;height:38px}
.empty{grid-column:1/-1;text-align:center;padding:40px 20px;border:1.5px dashed var(--line-2);border-radius:var(--r-lg);color:var(--muted);background:var(--surface)}
.empty .e-ico{width:56px;height:56px;margin:0 auto 12px;border-radius:14px;display:grid;place-items:center;background:var(--primary-50);color:var(--p-ink)}
.empty .e-ico svg{width:28px;height:28px}
.empty h3{color:var(--ink);font-size:1.1rem;margin-bottom:6px}
.empty p{max-width:30rem;margin:0 auto 16px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 18px;border-radius:10px;border:1px solid var(--line-2);background:var(--surface);font-size:.94rem;color:var(--ink);transition:all .2s}
.btn svg{width:20px;height:20px}
.btn:hover{border-color:var(--primary);color:var(--p-ink)}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn.primary:hover{background:var(--primary-700);color:#fff}
.btn:disabled{opacity:.5;cursor:not-allowed}
.toggle{display:inline-flex;align-items:center;gap:6px;height:42px;padding:0 12px;border-radius:10px;border:1px solid var(--line);font-size:.82rem;color:var(--muted)}
.toggle svg{width:19px;height:19px}
.toggle.on{color:var(--p-ink);border-color:var(--primary);background:var(--primary-50)}

/* ---------- Exercise sheet ---------- */
.sheet{position:fixed;inset:0;z-index:60;display:flex;align-items:flex-end;justify-content:center}
.sheet-backdrop{position:absolute;inset:0;background:rgba(6,20,36,.6);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);animation:fade .3s both}
@keyframes fade{from{opacity:0}}
.sheet-panel:focus{outline:none}
.sheet-panel{position:relative;width:100%;height:100dvh;max-height:100dvh;overflow-y:auto;overscroll-behavior:contain;background:var(--surface);animation:up .35s cubic-bezier(.2,.9,.2,1) both;padding-bottom:calc(16px + var(--safe-b))}
@keyframes up{from{transform:translateY(36px);opacity:0}}
.sheet-bar{position:sticky;top:0;z-index:3;display:flex;align-items:center;gap:10px;padding:10px 12px;background:var(--surface);border-top:3px solid var(--primary);border-bottom:1px solid var(--line)}
.sheet-bar .icon-btn{background:var(--surface-2);border:1px solid var(--line)}
.sheet-meta{display:flex;align-items:center;gap:8px;min-width:0}
.sheet-meta code{font-family:var(--font);font-size:.76rem;color:var(--muted);direction:ltr;letter-spacing:.04em}
.sheet-pos{margin-inline-start:auto;font-size:.78rem;color:var(--muted)}
.sheet-grid{display:grid}
.stage{padding:12px 12px 0}
.video-box{position:relative;border-radius:var(--r);overflow:hidden;background:var(--media-bg);border:1px solid var(--line);touch-action:pan-y}
.video-box video{width:100%;max-height:52dvh;object-fit:contain;background:var(--media-bg);margin:auto}
.big-play{position:absolute;inset:0;margin:auto;width:72px;height:72px;border-radius:50%;background:rgba(255,255,255,.96);color:var(--primary);display:grid;place-items:center;box-shadow:0 12px 30px rgba(11,31,51,.25);transition:transform .2s,opacity .2s}
.big-play svg{width:32px;height:32px;margin-left:4px}
.big-play::before{content:"";position:absolute;inset:-9px;border-radius:50%;border:2px solid rgba(255,255,255,.85);animation:playRing 1.8s ease-out infinite}
@keyframes playRing{from{transform:scale(.85);opacity:.9}to{transform:scale(1.35);opacity:0}}
.video-box.playing .big-play{opacity:0;pointer-events:none;transform:scale(.8)}
.vprog{position:absolute;inset-inline:0;bottom:0;height:3px;background:rgba(11,31,51,.08)}
.vprog i{display:block;height:100%;width:0;background:var(--primary);transition:width .15s linear}
.nav-arrow{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.92);color:#0b1f33;display:none;place-items:center;box-shadow:0 6px 16px rgba(11,31,51,.15)}
.nav-arrow svg{width:22px;height:22px}
.nav-arrow.prev{inset-inline-start:12px}.nav-arrow.next{inset-inline-end:12px}
.vctrl{display:flex;align-items:center;gap:8px;padding:12px 0 4px;flex-wrap:wrap}
.speed{display:flex;align-items:center;gap:2px;background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:3px}
.speed span{font-size:.74rem;color:var(--muted);padding:0 6px}
.speed button{height:34px;min-width:48px;padding:0 8px;border-radius:8px;font-size:.82rem;color:var(--ink-2);direction:ltr}
.speed button.on{background:var(--surface);color:var(--p-ink);box-shadow:var(--shadow-sm);outline:1px solid var(--line)}
.vctrl .toggle{margin-inline-start:auto}
.stage.swap-next .video-box{animation:swapNext .4s cubic-bezier(.2,.8,.2,1)}
.stage.swap-prev .video-box{animation:swapPrev .4s cubic-bezier(.2,.8,.2,1)}
@keyframes swapNext{from{opacity:0;transform:translateX(-30px)}}
@keyframes swapPrev{from{opacity:0;transform:translateX(30px)}}

.side{padding:14px 16px 8px;display:flex;flex-direction:column;gap:12px}
.ex-kicker{font-size:.76rem;color:var(--p-ink);letter-spacing:.02em}
.side h2{font-size:1.5rem;margin-top:2px}
.side .en{color:var(--muted);font-size:.88rem;text-align:end}
.ex-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin:0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.ex-facts div{padding:9px 12px;border-bottom:1px solid var(--line);background:var(--surface-2)}
.ex-facts div:nth-child(odd){border-inline-end:1px solid var(--line)}
.ex-facts div:nth-last-child(-n+2){border-bottom:0}
.ex-facts dt{font-size:.72rem;color:var(--muted)}
.ex-facts dd{margin:1px 0 0;font-size:.92rem;color:var(--ink)}
.block{border:1px solid var(--line);border-radius:var(--r);padding:12px 14px;background:var(--surface)}
.block h3{font-size:1rem;display:flex;align-items:center;gap:8px}
.block h3 svg{width:19px;height:19px;flex:none}
.block-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.steps{margin:0;padding:0;list-style:none;counter-reset:st;display:grid;gap:10px}
.steps li{counter-increment:st;display:grid;grid-template-columns:26px 1fr;gap:10px;align-items:start;line-height:1.75;font-size:.95rem}
.steps li::before{content:counter(st);width:26px;height:26px;border-radius:7px;display:grid;place-items:center;background:var(--primary-50);color:var(--p-ink);font-size:.8rem;margin-top:2px}
.caution{background:var(--amber-50);border-color:var(--amber-line);color:var(--amber)}
.caution ul{margin:6px 0 0;padding-inline-start:20px;display:grid;gap:3px;font-size:.9rem;line-height:1.7;color:var(--ink-2)}
.redflag{background:var(--red-50);border-color:var(--red-line);color:var(--red)}
.redflag p{margin-top:4px;font-size:.9rem;color:var(--ink-2);line-height:1.7}
.redflag a{color:var(--red);text-decoration:underline;text-underline-offset:3px}
.tools{background:var(--surface-2)}
.seg{display:grid;grid-template-columns:1fr 1fr;gap:3px;background:var(--line);padding:3px;border-radius:10px}
.seg button{display:flex;align-items:center;justify-content:center;gap:6px;height:40px;border-radius:8px;font-size:.84rem;color:var(--muted)}
.seg button svg{width:18px;height:18px}
.seg button.on{background:var(--surface);color:var(--p-ink);box-shadow:var(--shadow-sm)}
.tool{padding:14px 2px 2px}
.counter{display:flex;align-items:center;justify-content:center;gap:22px}
.counter output{font-size:3.2rem;min-width:2.2ch;text-align:center;font-variant-numeric:tabular-nums;line-height:1}
.counter output.bump{animation:countBump .35s cubic-bezier(.3,1.6,.5,1)}
@keyframes countBump{40%{transform:scale(1.22);color:var(--p-ink)}}
.cbtn{width:60px;height:60px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line-2);background:var(--surface);color:var(--ink-2);position:relative;transition:transform .15s}
.cbtn svg{width:24px;height:24px}
.cbtn.plus{width:78px;height:78px;background:var(--primary);border-color:var(--primary);color:#fff}
.cbtn.plus svg{width:32px;height:32px}
.cbtn:active{transform:scale(.94)}
.cbtn.pulse-once::after{content:"";position:absolute;inset:0;border-radius:50%;border:3px solid var(--primary);animation:ringOut .5s ease-out forwards;pointer-events:none}
@keyframes ringOut{from{transform:scale(.9);opacity:1}to{transform:scale(1.5);opacity:0}}
.counter-foot{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:10px;font-size:.84rem;color:var(--muted)}
.counter-foot b{color:var(--ink)}
.timer{position:relative;width:140px;height:140px;margin:0 auto}
.ring{width:100%;height:100%;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:8}
.ring-bg{stroke:var(--line)}
.ring-fg{stroke:var(--primary);stroke-linecap:round;stroke-dasharray:326.7;transition:stroke-dashoffset .25s linear}
.timer.done .ring-fg{stroke:var(--ok)}
.timer.warn .ring-fg{stroke:#d97706}
.timer.warn output{color:#d97706;animation:tick 1s ease-in-out infinite}
@keyframes tick{50%{transform:scale(1.08)}}
.timer output{position:absolute;inset:0;display:grid;place-items:center;font-size:2.1rem;font-variant-numeric:tabular-nums;direction:ltr}
.presets{display:flex;justify-content:center;gap:6px;margin:12px 0;flex-wrap:wrap}
.presets button{height:36px;padding:0 12px;border-radius:8px;border:1px solid var(--line);font-size:.82rem;background:var(--surface)}
.presets button.on{border-color:var(--primary);color:var(--p-ink);background:var(--primary-50)}
.timer-ctrl{display:grid;grid-template-columns:1.6fr 1fr;gap:8px}
.actions .btn{width:100%}
.step-nav{display:grid;grid-template-columns:1fr 1fr;gap:8px}

/* ---------- Pages ---------- */
.page{padding:22px 0 12px}
.page-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:18px}
.page-head h1{font-size:1.55rem}
.page-head p{color:var(--muted);margin-top:4px;font-size:.94rem}
.page-ico{flex:none;width:50px;height:50px;border-radius:12px;display:grid;place-items:center;color:#fff;background:var(--primary)}
.page-ico svg{width:26px;height:26px}
.alert-card{border:1px solid var(--red-line);background:var(--red-50);border-radius:var(--r-lg);padding:16px;margin-bottom:14px;border-inline-start:5px solid var(--red)}
.alert-head{display:flex;align-items:center;gap:10px;color:var(--red);margin-bottom:10px}
.alert-head span{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:var(--red);color:#fff;flex:none}
.alert-head svg{width:20px;height:20px}
.alert-head h2{font-size:1.1rem}
.flags{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.flags li{display:flex;gap:10px;align-items:flex-start;font-size:.95rem;color:var(--ink);line-height:1.7}
.flags li::before{content:"";flex:none;width:8px;height:8px;border-radius:2px;background:var(--red);margin-top:.6em}
.emerg{display:flex;gap:8px;align-items:center;margin-top:12px;padding-top:12px;border-top:1px solid var(--red-line);font-size:.92rem;color:var(--ink)}
.emerg svg{width:20px;height:20px;color:var(--red);flex:none}
.emerg b{color:var(--red);font-size:1.1rem}
.guide-grid{display:grid;gap:12px}
.gcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:16px}
.gcard h3{display:flex;align-items:center;gap:10px;font-size:1.05rem;margin-bottom:10px}
.gi{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:var(--primary-50);color:var(--p-ink);flex:none}
.gi svg{width:19px;height:19px}
.gcard ul{margin:0;padding-inline-start:20px;display:grid;gap:6px;font-size:.93rem;line-height:1.75;color:var(--ink-2)}
.gcard li::marker{color:var(--primary)}

/* About */
.profile{display:flex;gap:18px;align-items:center;padding:20px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);border-top:4px solid var(--primary);box-shadow:var(--shadow);margin-bottom:14px}
.avatar{flex:none;width:92px;height:92px;border-radius:50%;overflow:hidden;display:grid;place-items:center;background:var(--primary-50);color:var(--p-ink);font-size:2.4rem;border:3px solid var(--surface);outline:2px solid var(--primary-100)}
.avatar img{width:100%;height:100%;object-fit:cover}
.eyebrow-s{font-size:.8rem;color:var(--p-ink)}
.profile h1{font-size:1.6rem;margin:2px 0}
.pen{color:var(--muted);font-size:.9rem;text-align:right;letter-spacing:.02em}
.pbio{margin-top:10px;color:var(--ink-2);line-height:1.8;font-size:.95rem}
.pcontact{margin:12px 0 0;display:grid;gap:6px}
.pcontact div{display:flex;gap:8px;font-size:.9rem}
.pcontact dt{color:var(--muted);min-width:5.5em}
.pcontact dd{margin:0;user-select:text}
.pcontact dd[dir="ltr"]{white-space:nowrap;text-align:right}
.xcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:16px;margin-bottom:14px}
.xcard h3{font-size:1.05rem;display:flex;align-items:center;gap:8px;margin-bottom:8px}
.xcard h3 svg{width:21px;height:21px;color:var(--p-ink)}
.xtext{font-size:.9rem;color:var(--muted);line-height:1.7}
.xrow{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.xrow .btn{flex:1 1 auto}
.xprog{font-size:.84rem;color:var(--p-ink);margin-top:8px;min-height:1.2em}
.howuse{list-style:none;margin:6px 0 0;padding:0;counter-reset:hu;display:grid;gap:12px}
.howuse li{counter-increment:hu;display:grid;grid-template-columns:34px 1fr;column-gap:12px}
.howuse li::before{content:counter(hu);grid-row:span 2;width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:var(--primary);color:#fff}
.howuse b{font-size:1rem}
.howuse span{font-size:.88rem;color:var(--muted);line-height:1.7}
.notice{display:flex;gap:12px;align-items:flex-start;padding:16px;border-radius:var(--r-lg);background:var(--amber-50);border:1px solid var(--amber-line);color:var(--amber)}
.notice-ico{flex:none;width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:#d97706;color:#fff}
.notice-ico svg{width:20px;height:20px}
.notice b{display:block;font-size:1rem;margin-bottom:4px}
.notice p{font-size:.9rem;line-height:1.75;color:var(--ink-2)}

/* ---------- Footer ---------- */
.footer{margin-top:30px;border-top:1px solid var(--line);background:var(--surface)}
.foot-in{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:20px 0}
.foot-links{display:flex;gap:16px;font-size:.88rem;color:var(--p-ink)}
.foot-note{font-size:.8rem;color:var(--muted);width:100%;line-height:1.7}
.copyright{border-top:1px solid var(--line);text-align:center;font-size:.84rem;color:var(--ink-2);padding:14px 16px;margin:0}
.cp-en{color:var(--muted);direction:ltr;unicode-bidi:isolate;white-space:nowrap}
.warn{font-size:.8rem;line-height:1.7;padding:10px 12px;border-radius:10px;background:var(--amber-50);color:var(--amber);border:1px solid var(--amber-line)}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:16px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}
.field>span{font-size:.84rem;color:var(--ink-2)}
.field input{width:100%;border:1px solid var(--line-2);border-radius:10px;background:var(--surface-2);padding:11px 13px;font-size:.95rem;outline:0}
.field input:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--ring);background:var(--surface)}

/* ---------- Toast ---------- */
.toast{position:fixed;left:50%;bottom:calc(var(--tab-h) + var(--safe-b) + 16px);transform:translate(-50%,20px);z-index:90;background:#0b1f33;color:#fff;padding:11px 18px;border-radius:10px;font-size:.9rem;box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:all .3s;max-width:calc(100% - 32px);text-align:center}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- Effects ---------- */
.rip-host{position:relative;overflow:clip;isolation:isolate}
.ripple{position:absolute;border-radius:50%;pointer-events:none;background:currentColor;opacity:.14;transform:scale(0);animation:ripple .6s cubic-bezier(.2,.7,.3,1) forwards;z-index:0}
.card .ripple{background:var(--primary)}
@keyframes ripple{to{transform:scale(1);opacity:0}}
html.fx .card .media:not(.loaded){background:linear-gradient(100deg,var(--media-bg) 30%,color-mix(in srgb,var(--media-bg) 55%,var(--surface)) 50%,var(--media-bg) 70%) 0 0/220% 100%;animation:shimmer 1.3s linear infinite}
@keyframes shimmer{to{background-position:-220% 0}}
html.fx .card .media:not(.loaded) img{opacity:0}
.hero-copy>*{animation:heroIn .7s cubic-bezier(.2,.8,.2,1) both}
.hero-copy>*:nth-child(2){animation-delay:.06s}.hero-copy>*:nth-child(3){animation-delay:.12s}.hero-copy>*:nth-child(4){animation-delay:.18s}.hero-copy>*:nth-child(5){animation-delay:.24s}
.anat-card{animation:heroIn .8s .15s cubic-bezier(.2,.8,.2,1) both}
@keyframes heroIn{from{opacity:0;transform:translateY(14px)}}
.sheet-panel .side>*{animation:heroIn .45s cubic-bezier(.2,.8,.2,1) both}
.sheet-panel .side>*:nth-child(2){animation-delay:.04s}.sheet-panel .side>*:nth-child(3){animation-delay:.08s}.sheet-panel .side>*:nth-child(n+4){animation-delay:.12s}
.toast.show{animation:toastIn .4s cubic-bezier(.3,1.4,.5,1)}
@keyframes toastIn{from{transform:translate(-50%,20px) scale(.94)}}
::view-transition-old(root){animation:vtOut .2s ease both}
::view-transition-new(root){animation:vtIn .3s cubic-bezier(.2,.8,.2,1) both}
@keyframes vtOut{to{opacity:0}}
@keyframes vtIn{from{opacity:0;transform:translateY(10px)}}
@supports (animation-timeline: view()){
  .grid .card,.gcard,.how3 li{animation:reveal linear both;animation-timeline:view();animation-range:entry 0% entry 55%}
  @keyframes reveal{from{opacity:0;transform:translateY(22px)}}
}

/* ---------- Voice search ---------- */
.mic-btn{flex:none;width:44px;height:44px;margin-inline-end:-6px;border-radius:10px;display:grid;place-items:center;color:#fff;background:var(--primary);position:relative;transition:background .2s,transform .2s}
.mic-btn svg{width:22px;height:22px}
.mic-btn:hover{background:var(--primary-700)}
.mic-btn::after{content:"";position:absolute;inset:0;border-radius:inherit;box-shadow:0 0 0 0 color-mix(in srgb,var(--primary) 45%,transparent);animation:micPing 2.6s ease-out infinite}
@keyframes micPing{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--primary) 45%,transparent)}70%,100%{box-shadow:0 0 0 10px transparent}}
.voice-hint{display:flex;align-items:center;gap:6px;margin-top:8px;font-size:.78rem;color:var(--muted)}
.voice-hint svg{width:15px;height:15px;color:var(--p-ink)}
.mic-sm{color:var(--p-ink)}
.voice{position:fixed;inset:0;z-index:80;display:flex;align-items:flex-end;justify-content:center}
.voice-backdrop{position:absolute;inset:0;background:rgba(6,20,36,.62);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:fade .25s both}
.voice-card{position:relative;width:100%;background:var(--surface);border-radius:var(--r-xl) var(--r-xl) 0 0;border-top:3px solid var(--primary);padding:28px 20px calc(24px + var(--safe-b));text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px;animation:up .35s cubic-bezier(.2,.9,.2,1) both}
.voice-x{position:absolute;top:10px;inset-inline-end:10px}
.vmic{position:relative;width:150px;height:150px;display:grid;place-items:center;margin-top:6px}
.vcore{position:relative;z-index:2;width:92px;height:92px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;box-shadow:0 16px 36px -12px color-mix(in srgb,var(--primary) 70%,transparent);transition:transform .25s,background .25s}
.vcore svg{width:40px;height:40px}
.vring{position:absolute;inset:0;margin:auto;width:92px;height:92px;border-radius:50%;border:2px solid var(--primary);opacity:0}
.voice[data-mode="listen"] .vring{animation:vr 1.8s ease-out infinite}
.voice[data-mode="listen"] .r2{animation-delay:.6s}.voice[data-mode="listen"] .r3{animation-delay:1.2s}
@keyframes vr{0%{transform:scale(1);opacity:.7}100%{transform:scale(1.65);opacity:0}}
.voice[data-mode="listen"] .vcore{animation:vbeat 1.2s ease-in-out infinite}
@keyframes vbeat{50%{transform:scale(1.06)}}
.voice[data-mode="done"] .vcore{background:var(--ok)}
.voice[data-mode="error"] .vcore{background:var(--muted)}
.vwave{display:flex;align-items:center;gap:4px;height:26px;opacity:0;transition:opacity .3s}
.voice[data-mode="listen"] .vwave{opacity:1}
.vwave i{width:4px;height:8px;border-radius:2px;background:var(--teal);animation:wave 1s ease-in-out infinite}
.vwave i:nth-child(2){animation-delay:.1s}.vwave i:nth-child(3){animation-delay:.2s}.vwave i:nth-child(4){animation-delay:.3s}.vwave i:nth-child(5){animation-delay:.2s}.vwave i:nth-child(6){animation-delay:.1s}
@keyframes wave{50%{height:24px}}
.voice-card h2{font-size:1.35rem}
.vtext{font-size:1rem;color:var(--ink-2);min-height:1.6em;max-width:30rem;line-height:1.7}
.voice[data-mode="error"] .vtext{color:var(--red)}
.vex{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;align-items:center;margin-top:6px;font-size:.8rem;color:var(--muted)}
.vex button{height:36px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface-2);font-size:.82rem;color:var(--p-ink)}
.vex button:hover{border-color:var(--primary)}
.vresult{margin:4px 0 14px;display:grid;gap:10px;animation:rise .35s cubic-bezier(.2,.8,.2,1)}
.vsum{display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:var(--r-lg);background:var(--primary-50);border:1px solid var(--primary-100)}
.vmic-s{flex:none;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--primary);color:#fff}
.vmic-s svg{width:20px;height:20px}
.vsum-t{flex:1;min-width:0}
.vq{font-size:1rem;color:var(--ink)}
.vchips{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.vchips span{font-size:.78rem;padding:3px 10px;border-radius:999px;background:var(--surface);border:1px solid var(--primary-100);color:var(--p-ink)}
.vn{font-size:.84rem;color:var(--muted);margin-top:6px}
.vflag{display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:var(--r-lg);background:var(--red-50);border:1px solid var(--red-line);border-inline-start:5px solid var(--red);color:var(--red)}
.vflag>svg{width:24px;height:24px;flex:none;margin-top:2px}
.vflag p{color:var(--ink-2);font-size:.9rem;line-height:1.7;margin-top:4px}
.vflag a{color:var(--red);text-decoration:underline}
@media (min-width:700px){
  .voice{align-items:center}
  .voice-card{width:min(520px,calc(100% - 32px));border-radius:var(--r-xl);padding:32px 24px 26px;box-shadow:var(--shadow-lg)}
}

/* ---------- Cinematic intro ---------- */
.intro{display:none}
html.intro-on body{overflow:hidden}
html.intro-on .intro{display:flex;position:fixed;inset:0;z-index:300;flex-direction:column;align-items:center;justify-content:center;gap:18px;color:#fff;overflow:hidden;
  background:radial-gradient(120% 90% at 50% 42%,var(--intro-a) 0%,var(--intro-b) 55%,var(--intro-c) 100%);clip-path:circle(150% at 50% 42%);transition:clip-path .75s cubic-bezier(.7,0,.3,1),opacity .6s}
.intro-grid{position:absolute;inset:0;opacity:.35;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:28px 28px;
  mask-image:radial-gradient(circle at 50% 42%,#000 10%,transparent 65%);-webkit-mask-image:radial-gradient(circle at 50% 42%,#000 10%,transparent 65%)}
.intro-ecg{position:absolute;inset-inline:0;top:calc(42% - 60px);width:100%;height:120px}
.intro-ecg path{fill:none;stroke:color-mix(in srgb,var(--accent) 70%,#fff);stroke-width:2.5;stroke-linejoin:round;stroke-linecap:round;filter:drop-shadow(0 0 6px color-mix(in srgb,var(--accent) 80%,transparent));
  stroke-dasharray:900;stroke-dashoffset:900;animation:introEcg 1.15s cubic-bezier(.45,0,.2,1) .15s forwards,introEcgOut .5s ease 1.25s forwards}
@keyframes introEcg{to{stroke-dashoffset:0}}
@keyframes introEcgOut{to{opacity:0;transform:scaleY(.2)}}
.intro-ecg path{transform-origin:center;transform-box:fill-box}
.intro-logo{position:relative;width:96px;height:96px;display:grid;place-items:center;margin-top:-8px}
.intro-mark{position:relative;z-index:2;width:96px;height:96px;opacity:0;transform:scale(.3);color:var(--primary);filter:drop-shadow(0 18px 40px rgba(0,0,0,.45));animation:introLogo .7s cubic-bezier(.3,1.5,.5,1) 1.2s forwards}
@keyframes introLogo{to{opacity:1;transform:scale(1)}}
.intro-ring{position:absolute;inset:0;border-radius:28px;border:2px solid color-mix(in srgb,var(--accent) 70%,#fff);opacity:0;animation:introRing 1.4s ease-out 1.35s forwards}
.intro-ring.r2{animation-delay:1.6s}
@keyframes introRing{0%{opacity:.9;transform:scale(1)}100%{opacity:0;transform:scale(2.3)}}
.intro-txt{text-align:center;opacity:0;transform:translateY(12px);animation:introTxt .7s cubic-bezier(.2,.8,.2,1) 1.55s forwards}
.intro-txt h1{font-size:clamp(1.6rem,6vw,2.4rem);letter-spacing:.01em}
.intro-txt p{margin-top:6px;font-size:.9rem;color:color-mix(in srgb,var(--accent) 45%,#fff);letter-spacing:.04em}
@keyframes introTxt{to{opacity:1;transform:none}}
.intro-skip{position:absolute;bottom:calc(24px + env(safe-area-inset-bottom,0px));inset-inline-start:50%;transform:translateX(50%);color:rgba(255,255,255,.6);font-size:.8rem;padding:8px 16px;border-radius:999px;border:1px solid rgba(255,255,255,.2)}
html.intro-on .intro.out{clip-path:circle(0% at 50% 42%)}
html.intro-on:not(.intro-leaving) .hero-copy>*,html.intro-on:not(.intro-leaving) .anat-card,html.intro-on:not(.intro-leaving) .ecg path{animation-play-state:paused}

/* ---------- Admin-driven bits ---------- */
.announce{background:var(--primary);color:#fff}
.announce.warn{background:#b45309}
.announce-in{display:flex;align-items:center;gap:10px;padding:8px 0;font-size:.88rem;line-height:1.6}
.announce-in>svg{width:20px;height:20px;flex:none}
.announce-in p{flex:1}
.announce .icon-btn{color:#fff;width:36px;height:36px}
.announce .icon-btn:hover{background:rgba(255,255,255,.15);color:#fff}
.hero.no-anat .hero-grid{grid-template-columns:1fr;max-width:760px}
.tabbar.t2{grid-template-columns:repeat(2,1fr)}
.rev-badge{display:inline-flex;align-items:center;gap:6px;margin-top:6px;font-size:.78rem;color:var(--ok);background:color-mix(in srgb,var(--ok) 9%,transparent);border:1px solid color-mix(in srgb,var(--ok) 35%,transparent);padding:3px 10px;border-radius:999px}
.rev-badge svg{width:15px;height:15px}
.card .cmeta.rv{display:flex;align-items:center;gap:4px;color:var(--ok)}
.card .cmeta.rv svg{width:14px;height:14px}

/* =========================================================
   Breakpoints
   ========================================================= */
@media (max-width:479px){
  .speed span,.vctrl .toggle span{display:none}
  .vctrl .toggle{width:42px;padding:0;justify-content:center}
  .hero{padding:20px 0 40px}
}
@media (min-width:560px){
  .grid{gap:14px}
  .anat-body{grid-template-columns:1fr 150px}
  .grid.list .card{grid-template-columns:160px minmax(0,1fr)}
  .how3{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (min-width:760px){
  .grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid.list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero{padding:40px 0 60px}
  .guide-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:900px){
  :root{--top-h:68px;--head-h:71px}
  body{padding-bottom:0}
  .tabbar{display:none}
  .toast{bottom:28px}
  .deck-nav{display:flex;gap:2px;margin-inline-start:28px}
  .deck-nav a{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 14px;border-radius:10px;font-size:.9rem;color:var(--ink-2);transition:all .2s;position:relative}
  .deck-nav a svg{width:20px;height:20px}
  .deck-nav a:hover{background:var(--primary-50);color:var(--p-ink)}
  .deck-nav a.on{color:var(--p-ink);background:var(--primary-50)}
  .hero-grid{grid-template-columns:1.05fr .95fr;align-items:center;gap:48px}
  .anat-body{grid-template-columns:1fr 200px;gap:16px}
  .figure{max-height:330px}
  .anat-card{padding:18px}
  .foot-note{width:auto;max-width:40rem}
  .sheet{align-items:center;padding:24px}
  .sheet-panel{width:min(1120px,100%);height:auto;max-height:calc(100dvh - 48px);border-radius:var(--r-xl);box-shadow:var(--shadow-lg);padding-bottom:0}
  .sheet-bar{border-radius:var(--r-xl) var(--r-xl) 0 0}
  .sheet-grid{grid-template-columns:1.2fr 1fr;align-items:start}
  .stage{padding:18px;position:sticky;top:64px}
  .video-box video{max-height:calc(100dvh - 250px)}
  .nav-arrow{display:grid;opacity:0;transition:opacity .2s}
  .video-box:hover .nav-arrow{opacity:1}
  .side{padding:18px 4px 20px 18px}
  #view-about .page,#view-guide .page{max-width:960px}
}
@media (min-width:1100px){
  .grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
  .grid.list{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:380px){
  :root{--fs:17px}:root[data-size="lg"]{--fs:19px}:root[data-size="xl"]{--fs:21px}
  .grid{gap:10px}
  .anat-body{grid-template-columns:1fr 96px}
  .profile{flex-direction:column;text-align:center}
  .pen{text-align:center}
}
@media (hover:none){.play-ico{opacity:.95;transform:scale(.85)}.grid.list .play-ico{opacity:0}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{
  .topbar,.tabbar,.toolbar,.sheet,.toast{display:none!important}
  body{background:#fff;padding:0}
}