/* Mūdra: Apple-style base. System type, generous space, frosted nav, soft grey surfaces.
   Brand colours: blue, a blue-to-magenta-to-amber ribbon, deep magenta and lavender. */
:root{
  --bg:#FFFFFF; --bg-alt:#F5F5F7; --card:#F5F5F7; --card-on-alt:#FFFFFF;
  --ink:#1D1D1F; --muted:#6E6E73; --line:rgba(0,0,0,.09);
  --blue:#1A6BD8; --blue-hover:#1459B8; --link:#0B66D0;
  --magenta:#9E2A85; --lavender:#CFA9E0; --coral:#EF6F61; --amber:#F4A83E;
  --ribbon:linear-gradient(90deg,#1A6BD8 0%,#7B4CC2 35%,#C43F8C 60%,#EF6F61 80%,#F4A83E 100%);
  --ok:#248A3D; --ok-fill:#30B158; --bad:#C4314B;
  --cam:#000; --on-accent:#fff;
  --bone:#8EC2FF; --joint:#F4A83E; --wrong-hi:#FF6B7A;
  /* names still used by older screens and the converter */
  --paper:var(--bg-alt); --panel:var(--card); --teal:var(--ok); --marigold:var(--amber); --rose:var(--bad);
  --r-xl:28px; --r-lg:22px; --r-md:14px; --r-sm:10px;
  --font:-apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", "Segoe UI", Roboto, Arial, sans-serif;
  --wrap:1180px; --gut:clamp(20px,4vw,44px);
  color-scheme:light dark;
}
@media (prefers-color-scheme: dark){
  :root{--bg:#000; --bg-alt:#101012; --card:#1C1C1E; --card-on-alt:#1C1C1E; --ink:#F5F5F7; --muted:#A1A1A6; --line:rgba(255,255,255,.12);
    --blue:#2B8CFF; --blue-hover:#4A9DFF; --link:#4DA3FF; --magenta:#B8429E; --lavender:#5B3E6B; --ok:#4CD06A; --bad:#FF5C77; --on-accent:#fff}
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;overflow-x:clip}
body{margin:0;min-height:100dvh;display:flex;flex-direction:column;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:17px;line-height:1.47;letter-spacing:-.022em;-webkit-font-smoothing:antialiased;
  padding:env(safe-area-inset-top,0) env(safe-area-inset-right,0) env(safe-area-inset-bottom,0) env(safe-area-inset-left,0)}
a{color:inherit}
button,input{font:inherit;color:inherit;letter-spacing:inherit}
h1,h2,h3,p{margin:0}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:6px}

/* ---------- nav: thin, frosted ---------- */
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:28px;height:52px;padding:0 max(var(--gut),calc((100vw - var(--wrap)) / 2));
  background:color-mix(in srgb,var(--bg) 78%,transparent);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:7px;font-weight:600;font-size:19px;letter-spacing:-.02em;text-decoration:none}
.brand .mark{width:24px;height:24px}
.nav{display:flex;gap:26px}
.nav a{text-decoration:none;font-size:14px;color:var(--ink);opacity:.72;transition:opacity .15s}
.nav a:hover{opacity:1}
.nav a[aria-current="page"]{opacity:1;font-weight:600}
.top-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.toggle{border:1px solid var(--line);background:transparent;border-radius:999px;padding:5px 12px;font-size:13px;cursor:pointer;color:var(--ink)}
.toggle[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.cam-pill{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px}
.cam-pill::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--muted)}
.cam-pill[data-state="running"]::before{background:var(--ok-fill)}
.cam-pill[data-state="loading"]::before{background:var(--amber)}
.cam-pill[data-state="error"]::before{background:var(--bad)}

.view{flex:1;width:100%;max-width:calc(var(--wrap) + 2 * var(--gut));margin:0 auto;padding:clamp(28px,5vw,56px) var(--gut);outline:none}

/* ---------- type ---------- */
.display{font-size:clamp(44px,7vw,84px);line-height:1.04;letter-spacing:-.035em;font-weight:700}
.h1{font-size:clamp(36px,5vw,56px);line-height:1.07;letter-spacing:-.03em;font-weight:700;max-width:18ch}
.h2{font-size:clamp(24px,2.6vw,32px);letter-spacing:-.025em;font-weight:700;line-height:1.12}
.section-title{font-size:clamp(34px,5vw,56px);line-height:1.07;letter-spacing:-.03em;font-weight:700;text-align:center;max-width:18ch;margin:0 auto}
.lede{font-size:clamp(19px,1.8vw,24px);line-height:1.38;color:var(--muted);max-width:40ch;letter-spacing:-.018em}
.lede.center{text-align:center;margin:18px auto 0}
.small{font-size:14px;color:var(--muted);letter-spacing:-.01em}

/* ---------- buttons and links ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;min-height:44px;border-radius:980px;
  border:1px solid var(--blue);background:transparent;color:var(--blue);font-size:17px;font-weight:500;text-decoration:none;cursor:pointer;
  transition:background .15s,color .15s,border-color .15s}
.btn:hover{background:color-mix(in srgb,var(--blue) 8%,transparent)}
.btn.pri{background:var(--blue);color:#fff}
.btn.pri:hover{background:var(--blue-hover);border-color:var(--blue-hover)}
.btn.light{background:#fff;color:var(--magenta);border-color:#fff}
.btn.light:hover{background:#fbe9f6}
.btn.danger{color:var(--bad);border-color:color-mix(in srgb,var(--bad) 50%,transparent)}
.btn:disabled{opacity:.4;cursor:not-allowed}
.more{color:var(--link);text-decoration:none;font-size:17px}
.more:hover{text-decoration:underline}
.back{text-decoration:none;color:var(--link);font-size:15px}
.back::before{content:"‹ "}
.back:hover{text-decoration:underline}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px}

.panel{background:var(--card);border-radius:var(--r-xl)}
.empty{padding:36px;display:grid;gap:12px;justify-items:start}
.empty h2{font-size:24px;font-weight:700;letter-spacing:-.02em}
.empty p{color:var(--muted);max-width:60ch}
.notice{padding:14px 18px;border-radius:var(--r-md);background:color-mix(in srgb,var(--blue) 9%,var(--bg));font-size:15px}

/* ---------- image slots ---------- */
.slot{position:relative;margin:0;border-radius:var(--r-xl);overflow:hidden;background:var(--card)}
.slot img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.slot figcaption{display:none}
.slot.empty{background:
  radial-gradient(120% 90% at 0% 100%,color-mix(in srgb,var(--blue) 14%,transparent),transparent 60%),
  radial-gradient(100% 80% at 100% 0%,color-mix(in srgb,var(--magenta) 14%,transparent),transparent 60%),var(--card)}
.slot.empty figcaption{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:6px;text-align:center;padding:24px;color:var(--muted);font-size:14px}
.slot.empty figcaption svg{width:34px;height:34px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;margin-bottom:4px}
.slot.empty figcaption b{color:var(--ink);font-weight:600;font-size:15px}
.slot.empty figcaption span{max-width:34ch}

/* ---------- home ---------- */
.hero{padding-top:0}
.hero-head{position:relative;display:grid;justify-items:center;text-align:center;gap:18px;padding:clamp(8px,2vw,24px) 0 clamp(32px,4vw,48px)}
.hero-title{font-size:clamp(34px,5.4vw,76px);line-height:1.08;letter-spacing:-.038em;font-weight:700}
.hero-title .ln{display:block;white-space:nowrap}
.hero-sub{font-size:clamp(18px,1.6vw,21px);color:var(--muted);max-width:52ch}
.hero-head .actions{justify-content:center;margin-top:4px}
/* hand-drawn marks: a circle round "Sign", a gradient underline under "camera", a loop before "with" */
.circled,.under{position:relative;display:inline-block}
.circled svg{position:absolute;left:-14%;top:-10%;width:128%;height:124%;overflow:visible;pointer-events:none}
.circled path{fill:none;stroke:var(--magenta);stroke-width:3.2;stroke-linecap:round;vector-effect:non-scaling-stroke;stroke-dasharray:1;stroke-dashoffset:1;animation:ink .9s .5s ease-out forwards}
.under svg{position:absolute;left:-2%;bottom:-.06em;width:104%;height:.26em;overflow:visible;pointer-events:none}
.under path{fill:none;stroke:url(#ulg);stroke-width:7;stroke-linecap:round;vector-effect:non-scaling-stroke;stroke-dasharray:1;stroke-dashoffset:1;animation:ink .8s 1.2s ease-out forwards}
.loop{display:inline-block;width:1.3em;height:.55em;margin-right:.18em;vertical-align:.05em;overflow:visible}
.loop path{fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;vector-effect:non-scaling-stroke;stroke-dasharray:1;stroke-dashoffset:1;animation:ink 1s 1s ease-out forwards}
@keyframes ink{to{stroke-dashoffset:0}}
/* the "o" in "your" becomes a camera lens; the letter stays for screen readers */
.lens{position:relative;display:inline-block;color:transparent}
.lens::before{content:"";position:absolute;left:50%;top:60%;width:.6em;aspect-ratio:1;translate:-50% -50%;border-radius:50%;
  background:radial-gradient(circle at 36% 34%,#fff 0 9%,transparent 10%),radial-gradient(circle,#1D1D1F 0 30%,transparent 31%),
  conic-gradient(from 210deg,#1A6BD8,#7B4CC2,#C43F8C,#EF6F61,#F4A83E,#1A6BD8);animation:lens 1.2s .2s cubic-bezier(.3,1.4,.5,1) both}
@keyframes lens{from{rotate:-120deg;scale:.3}to{rotate:0deg;scale:1}}
/* scattered shapes */
.sparkles{position:absolute;inset:0;pointer-events:none}
.sp{position:absolute;animation:pop .6s cubic-bezier(.3,1.6,.5,1) both}
.sp.s1{width:clamp(22px,2.6vw,38px);left:6%;top:6%;fill:var(--blue);animation-delay:.3s}
.sp.s2{width:clamp(18px,2vw,28px);right:9%;top:2%;fill:var(--amber);animation-delay:.45s}
.sp.s3{width:clamp(18px,2vw,28px);right:5%;top:46%;fill:var(--coral);animation-delay:.6s}
.dot{position:absolute;border-radius:50%;animation:pop .5s cubic-bezier(.3,1.6,.5,1) both}
.dot.d1{width:10px;height:10px;left:14%;top:52%;background:var(--lavender);animation-delay:.5s}
.dot.d2{width:8px;height:8px;right:24%;top:-2%;background:var(--magenta);animation-delay:.7s}
.dot.d3{width:12px;height:12px;left:3%;top:34%;background:var(--amber);animation-delay:.8s}
@keyframes pop{from{scale:0;rotate:-40deg}to{scale:1;rotate:0deg}}
.hero-media{grid-column:1 / -1;position:relative;isolation:isolate}
.hero-media .slot{z-index:1}
.hero-media .slot.empty{z-index:0}
.ribbon{position:absolute;left:-6%;top:0;width:112%;height:100%;pointer-events:none;overflow:visible}
.ribbon path{stroke-dasharray:3000;stroke-dashoffset:3000;animation:draw 1.8s .3s cubic-bezier(.6,0,.2,1) forwards}
@keyframes draw{to{stroke-dashoffset:0}}

.band{margin:clamp(72px,10vw,120px) calc(50% - 50vw) 0;padding:clamp(64px,9vw,110px) max(var(--gut),calc((100vw - var(--wrap)) / 2))}
.band.alt{background:var(--bg-alt)}
.band.alt .panel,.band.alt .cell,.band.alt .stat{background:var(--card-on-alt)}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(12px,2vw,20px);max-width:860px;margin:0 auto clamp(64px,9vw,100px)}
.stat{background:var(--card);border-radius:var(--r-lg);padding:22px 24px;text-align:center}
.stat b{display:block;font-size:clamp(36px,4vw,48px);font-weight:700;letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums}
.stat span{display:block;margin-top:6px;font-size:14px;color:var(--muted)}

.bento{display:grid;grid-template-columns:repeat(3,1fr);grid-template-areas:"w w a" "w w b" "d r r";grid-auto-rows:minmax(220px,auto);gap:clamp(12px,1.6vw,20px);margin-top:clamp(40px,6vw,64px)}
.cell{background:var(--card);border-radius:var(--r-xl);padding:clamp(24px,3vw,36px);display:flex;flex-direction:column;justify-content:flex-end;gap:10px;overflow:hidden}
.cell h3{font-size:clamp(22px,2.2vw,28px);font-weight:700;letter-spacing:-.025em;line-height:1.12}
.cell p{color:var(--muted);max-width:34ch}
.cell.wide{padding:0;justify-content:space-between}
.cell.wide .cell-copy{padding:clamp(24px,3vw,36px) clamp(24px,3vw,36px) 0}
.cell .slot.empty{background:radial-gradient(120% 90% at 0% 100%,color-mix(in srgb,var(--blue) 12%,transparent),transparent 60%),radial-gradient(100% 80% at 100% 0%,color-mix(in srgb,var(--magenta) 12%,transparent),transparent 60%),var(--bg-alt)}
.cell.wide .slot{border-radius:0;margin-top:24px;flex:1;aspect-ratio:auto!important;min-height:280px}
.cell.row{padding:0;display:grid;grid-template-columns:1fr 1fr;align-items:end}
.cell.row .slot{border-radius:0;height:100%;aspect-ratio:auto!important;min-height:240px}
.cell.row .cell-copy{padding:clamp(24px,3vw,36px)}
.cell-copy{display:grid;gap:10px}
.cell.dark{background:#1D1D1F!important;color:#F5F5F7}
.cell.dark p{color:#A1A1A6}
.cell.dark h3{background:var(--ribbon);-webkit-background-clip:text;background-clip:text;color:transparent}

.band.signs{margin-top:0;padding-top:clamp(64px,9vw,110px)}
.band.signs .section-title{margin-bottom:clamp(32px,5vw,56px)}
.group{margin-top:34px}
.group-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:14px}
.group-head .h2{font-size:24px}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:10px}
.tile{position:relative;aspect-ratio:1;display:flex;flex-direction:column;justify-content:space-between;padding:12px 13px;border-radius:var(--r-lg);
  background:var(--card);text-decoration:none;transition:transform .2s cubic-bezier(.3,.7,.4,1),box-shadow .2s}
.tile:hover{transform:scale(1.04);box-shadow:0 12px 30px -14px rgba(0,0,0,.25)}
.tile .g{font-size:34px;font-weight:600;line-height:1;letter-spacing:-.02em}
.tile .dots{display:flex;gap:4px}
.tile .dots i{width:6px;height:6px;border-radius:50%;background:var(--line)}
.tile .dots i.on{background:var(--blue)}
.tile.missing{background:transparent;box-shadow:inset 0 0 0 1px var(--line)}
.tile.missing .g{color:var(--muted)}
.tile.missing .need{font-size:11px;color:var(--muted);line-height:1.2}
.tile.due::after{content:"";position:absolute;top:12px;right:12px;width:8px;height:8px;border-radius:50%;background:var(--magenta)}
.tile .count{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.tile[aria-current="true"]{box-shadow:inset 0 0 0 2px var(--blue)}

/* magenta and lavender band, after the second reference */
.mission{position:relative;display:grid;grid-template-columns:1fr 1fr;margin:0 calc(50% - 50vw) calc(-1 * clamp(28px,5vw,56px));min-height:560px;overflow:hidden}
.mission-copy{background:var(--magenta);color:#fff;padding:clamp(48px,7vw,96px) clamp(24px,5vw,72px) clamp(48px,7vw,96px) max(var(--gut),calc((100vw - var(--wrap)) / 2));display:flex;flex-direction:column;justify-content:center;gap:4px}
.mission-copy h2{font-size:clamp(34px,4.4vw,56px);font-weight:700;letter-spacing:-.03em;line-height:1.05}
.mission-sub{font-size:clamp(34px,4.4vw,56px);font-weight:300;letter-spacing:-.03em;line-height:1.05}
.mission-body{margin:22px 0 28px;max-width:36ch;font-size:19px;opacity:.9}
.mission-copy .btn{align-self:flex-start}
.mission-media{position:relative;overflow:hidden;background:#CFA9E0;padding:clamp(40px,6vw,72px) max(var(--gut),calc((100vw - var(--wrap)) / 2)) clamp(40px,6vw,72px) clamp(24px,5vw,72px);display:grid;place-items:center}
.mission-media::before{content:"";position:absolute;width:150%;aspect-ratio:1;border-radius:50%;border:clamp(18px,2.4vw,30px) solid var(--magenta);left:-95%;top:20%}
.mission-media .slot{position:relative;width:min(100%,420px)}
.slot.on-lav.empty{background:rgba(255,255,255,.35)}
.slot.on-lav.empty figcaption,.slot.on-lav.empty figcaption b{color:#3b1636}

/* ---------- footer ---------- */
.foot{background:var(--bg-alt);border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.foot-inner{max-width:calc(var(--wrap) + 2 * var(--gut));margin:0 auto;padding:18px var(--gut) 22px;display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between;align-items:center}
.foot-links{display:flex;gap:20px}
.foot-links a{text-decoration:none;color:var(--ink);opacity:.75}
.foot-links a:hover{opacity:1;text-decoration:underline}

/* ---------- install ---------- */
.toggle.install{background:var(--blue);color:#fff;border-color:var(--blue)}
.ios-tip{position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));z-index:30;display:flex;align-items:center;gap:12px;
  padding:14px 14px 14px 16px;border-radius:18px;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  box-shadow:0 10px 40px -10px rgba(0,0,0,.3),0 0 0 .5px var(--line);font-size:14px;line-height:1.35}
.ios-tip svg{flex:none;width:26px;height:26px;fill:none;stroke:var(--blue);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ios-tip p{flex:1}
.ios-tip button{flex:none;width:32px;height:32px;border:0;border-radius:50%;background:var(--card);font-size:20px;line-height:1;cursor:pointer;color:var(--ink)}
@media (display-mode: standalone){.top{padding-top:max(10px,env(safe-area-inset-top))}}

/* ---------- practice ---------- */
.learn-top{display:flex;align-items:center;gap:14px;margin-bottom:22px;flex-wrap:wrap}
.stepper{display:flex;align-items:center;gap:8px;margin-left:auto}
.iconbtn{width:40px;height:40px;display:grid;place-items:center;border:0;color:var(--ink);border-radius:50%;background:var(--card);cursor:pointer;text-decoration:none;transition:background .15s}
.iconbtn:hover{background:color-mix(in srgb,var(--ink) 10%,var(--card))}
.iconbtn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.learn-grid{display:grid;grid-template-columns:minmax(260px,.8fr) 1.6fr;gap:22px;align-items:start}
.ref-card{padding:22px;display:grid;gap:16px;position:sticky;top:76px}
.ref-card .label{display:flex;align-items:baseline;gap:12px}
.ref-card .label b{font-size:76px;font-weight:700;line-height:.9;letter-spacing:-.04em}
.ref-canvas{width:100%;aspect-ratio:1;background:var(--cam);border-radius:var(--r-lg);display:block}
.ref-media{position:relative}
.ref-photo{width:100%;aspect-ratio:1;object-fit:contain;background:var(--cam);border-radius:var(--r-lg);display:block;transform:scaleX(-1)}
.ref-media[data-view="photo"] .ref-canvas,.ref-media[data-view="lines"] .ref-photo{display:none}
.ref-toggle{position:absolute;left:50%;translate:-50% 0;bottom:12px;display:flex;gap:2px;padding:3px;border-radius:999px;background:rgba(40,40,44,.6);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
.ref-toggle button{white-space:nowrap;border:0;background:transparent;color:#fff;font-size:13px;font-weight:500;padding:6px 14px;border-radius:999px;cursor:pointer}
.ref-toggle button[aria-pressed="true"]{background:rgba(255,255,255,.92);color:#1D1D1F}
.ref-card p{color:var(--muted);font-size:15px}

.stage-card{overflow:hidden}
.stage{position:relative;background:var(--cam);aspect-ratio:16/10;overflow:hidden;border-radius:var(--r-xl) var(--r-xl) 0 0}
.mirror{position:absolute;inset:0;transform:scaleX(-1)}
.cam-video,.overlay{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cam-video{opacity:.94}
.cam-msg{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:24px;color:#fff;font-size:17px;font-weight:500;pointer-events:none}
.cam-msg:empty{display:none}
.cam-msg span{background:rgba(40,40,44,.72);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);padding:12px 20px;border-radius:var(--r-md);max-width:42ch}
.toast{position:absolute;left:50%;bottom:18px;translate:-50% 0;padding:10px 20px;border-radius:999px;font-weight:600;font-size:16px;white-space:nowrap;max-width:92%;overflow:hidden;text-overflow:ellipsis;
  opacity:0;transition:opacity .2s,translate .2s;pointer-events:none;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
.toast.show{opacity:1}
.toast.hint{background:rgba(255,255,255,.92);color:#1D1D1F}
.toast.ok{background:rgba(36,138,61,.92);color:#fff}
.toast.bad{background:rgba(196,49,75,.92);color:#fff}
.tag{position:absolute;top:14px;left:14px;font-size:12px;color:#fff;background:rgba(40,40,44,.55);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);padding:4px 11px;border-radius:999px}
.countdown{position:absolute;inset:0;display:grid;place-items:center;font-size:clamp(80px,14vw,160px);font-weight:700;color:#fff;text-shadow:0 4px 30px rgba(0,0,0,.4);pointer-events:none}
.countdown:empty{display:none}
.rec-dot{position:absolute;top:14px;right:14px;display:flex;align-items:center;gap:8px;background:var(--bad);color:#fff;font-weight:600;font-size:13px;padding:5px 12px;border-radius:999px}
.rec-dot::before{content:"";width:8px;height:8px;border-radius:50%;background:#fff;animation:blink 1s infinite}
@keyframes blink{50%{opacity:.2}}
.cheer{position:absolute;left:50%;top:50%;width:clamp(76px,11%,110px);aspect-ratio:1;border-radius:50%;background:var(--ribbon);display:grid;place-items:center;
  translate:-50% -50%;scale:.4;opacity:0;transition:scale .4s cubic-bezier(.3,1.6,.5,1),opacity .2s;pointer-events:none;z-index:3;box-shadow:0 10px 40px -8px rgba(196,63,140,.6)}
.cheer svg{width:58%;fill:none;stroke:#fff;stroke-width:6;stroke-linecap:round;stroke-linejoin:round}
.cheer.show{scale:1;opacity:1}
.stage-bar{display:flex;align-items:center;gap:14px;padding:16px 20px;flex-wrap:wrap}
.ring{width:44px;height:44px;flex:none}
.ring circle{fill:none;stroke-width:4}
.ring .bg{stroke:var(--line)}
.ring .fg{stroke:var(--blue);stroke-linecap:round;transform:rotate(-90deg);transform-origin:center;transition:stroke .2s}
.ring.done .fg{stroke:var(--ok-fill)}
.status{flex:1;min-width:160px}
.status b{display:block;font-size:17px;font-weight:600}
.status span{font-size:14px;color:var(--muted)}
.switch{display:flex;align-items:center;gap:8px;font-size:14px;cursor:pointer;user-select:none}
.switch input{width:18px;height:18px;accent-color:var(--blue)}

/* ---------- quiz ---------- */
.modes{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px}
.mode{padding:32px;min-height:240px;display:grid;gap:10px;align-content:start;text-align:left;cursor:pointer;border:0;background:var(--card);border-radius:var(--r-xl);transition:transform .2s cubic-bezier(.3,.7,.4,1),box-shadow .2s}
.mode:hover:not(:disabled){transform:scale(1.015);box-shadow:0 18px 40px -20px rgba(0,0,0,.3)}
.mode-icon{width:48px;height:48px;border-radius:14px;background:var(--ribbon);display:grid;place-items:center;margin-bottom:10px}
.mode-icon svg{width:26px;height:26px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.mode h2{font-size:28px;font-weight:700;letter-spacing:-.025em}
.mode p{color:var(--muted);max-width:36ch}
.mode .go{margin-top:6px;color:var(--link)}
.mode:disabled{opacity:.5;cursor:not-allowed}
.quiz-top{display:flex;align-items:center;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.qprog{flex:1;min-width:160px;display:flex;gap:4px}
.qprog i{flex:1;height:6px;border-radius:3px;background:var(--line)}
.qprog i.ok{background:var(--ok-fill)} .qprog i.no{background:var(--bad)} .qprog i.cur{background:var(--blue)}
.prompt{display:flex;align-items:center;gap:18px;margin-bottom:16px}
.prompt b{font-size:92px;font-weight:700;line-height:.9;letter-spacing:-.04em}
.timer{height:4px;background:var(--line)}
.timer i{display:block;height:100%;width:100%;background:var(--ribbon);transform-origin:left}
.name-grid{display:grid;grid-template-columns:minmax(240px,420px) 1fr;gap:28px;align-items:start}
.options{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.opt{font-size:42px;font-weight:600;padding:22px;border-radius:var(--r-lg);border:0;background:var(--card);cursor:pointer;transition:background .15s,transform .15s}
.opt:hover:not(:disabled){background:color-mix(in srgb,var(--blue) 10%,var(--card))}
.opt.right{background:var(--ok-fill);color:#fff}
.opt.wrong{background:var(--bad);color:#fff}
.opt:disabled{cursor:default}
.result{padding:clamp(32px,5vw,56px);display:grid;gap:16px;justify-items:center;text-align:center}
.result .score{font-size:clamp(80px,10vw,120px);font-weight:700;letter-spacing:-.045em;line-height:1;background:var(--ribbon);-webkit-background-clip:text;background-clip:text;color:transparent}
.review{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}
.review span{padding:6px 14px;border-radius:999px;font-weight:500;background:color-mix(in srgb,var(--ok-fill) 16%,var(--bg));color:var(--ink)}
.review span.no{background:color-mix(in srgb,var(--bad) 14%,var(--bg))}

/* ---------- transcribe ---------- */
.tx-head{margin-bottom:28px}
.tx-row{display:flex;justify-content:space-between;align-items:center;gap:12px 20px;flex-wrap:wrap;margin-bottom:24px}
.tx-head .lede{margin-top:10px}
.tx-tools{display:flex;gap:12px;flex-wrap:wrap}
.seg{display:inline-flex;padding:2px;border-radius:10px;background:var(--card)}
.seg button{border:0;background:transparent;font-size:13px;font-weight:500;padding:7px 14px;border-radius:8px;cursor:pointer;color:var(--ink)}
.seg button[aria-pressed="true"]{background:var(--bg);box-shadow:0 1px 3px rgba(0,0,0,.14),0 0 0 .5px rgba(0,0,0,.05)}
.tx-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(300px,1fr);gap:22px;align-items:stretch}
.tx-help{max-width:60ch}
.tx-panel{display:flex;flex-direction:column;padding:28px;min-height:320px}
.tx-text{flex:1;font-size:clamp(32px,3.6vw,52px);font-weight:600;letter-spacing:-.025em;line-height:1.15;word-break:break-word;white-space:pre-wrap}
.tx-empty{color:var(--muted);font-weight:500}
.caret{display:inline-block;width:3px;height:.9em;margin-left:2px;vertical-align:-.08em;border-radius:2px;background:var(--blue);animation:caret 1.1s steps(1) infinite}
@keyframes caret{50%{opacity:0}}
.tx-text .pop{display:inline-block;animation:typed .35s cubic-bezier(.3,1.5,.5,1)}
@keyframes typed{from{transform:translateY(.25em) scale(.6);opacity:0;color:var(--magenta)}}
.tx-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tx-actions .btn{min-height:38px;padding:7px 15px;font-size:15px}
.tx-actions #tx-clear{margin-left:auto;border-color:transparent;padding-right:4px}
.guess{position:absolute;top:14px;right:14px;width:clamp(72px,9vw,96px);aspect-ratio:1;display:grid;place-items:center;border-radius:24px;
  background:rgba(40,40,44,.55);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);color:#fff;opacity:0;scale:.8;transition:opacity .2s,scale .2s;z-index:2}
.guess.show{opacity:1;scale:1}
.guess.weak b{opacity:.35}
.guess b{font-size:clamp(34px,4.4vw,48px);font-weight:700;letter-spacing:-.02em;line-height:1}
.guess svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.guess rect{fill:none;stroke-width:5}
.guess .bg{stroke:rgba(255,255,255,.18)}
.guess .fg{stroke:#fff;stroke-dasharray:1;stroke-dashoffset:1;stroke-linecap:round}
.guess.hit{animation:hit .45s cubic-bezier(.3,1.6,.5,1)}
.guess.hit .fg{stroke:var(--ok-fill)}
@keyframes hit{40%{scale:1.15}}

/* transcribe modes */
.tabs{display:flex;gap:4px;padding:4px;border-radius:14px;background:var(--card);width:fit-content;max-width:100%;overflow-x:auto}
.tabs a{flex:none;text-decoration:none;font-size:15px;font-weight:500;padding:9px 20px;border-radius:10px;color:var(--ink);opacity:.75;transition:opacity .15s,background .15s}
.tabs a:hover{opacity:1}
.tabs a[aria-current="page"]{opacity:1;background:var(--bg);font-weight:600;box-shadow:0 1px 3px rgba(0,0,0,.14),0 0 0 .5px rgba(0,0,0,.05)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.select select{appearance:none;-webkit-appearance:none;border:0;background:var(--card) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%236E6E73' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 12px center/11px;
  border-radius:10px;padding:8px 36px 8px 14px;font-size:14px;color:var(--ink);cursor:pointer}

.cap-panel{display:flex;flex-direction:column;min-height:min(62vh,560px);overflow:hidden}
.cap-text{flex:1;overflow-y:auto;padding:clamp(24px,3vw,40px);font-size:clamp(28px,3.2vw,44px);font-weight:600;letter-spacing:-.025em;line-height:1.25;max-height:min(52vh,480px)}
.cap-text .interim{color:var(--muted);font-weight:500}
.cap-bar{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:18px 22px;border-top:1px solid var(--line)}
.cap-bar .tx-actions{margin:0 0 0 auto}
.cap-state b{display:block;font-size:16px;font-weight:600}
.cap-state span{font-size:13px;color:var(--muted)}
.mic{position:relative;width:60px;height:60px;border-radius:50%;border:0;cursor:pointer;display:grid;place-items:center;background:var(--blue);color:#fff;flex:none;transition:background .2s,scale .15s}
.mic:active{scale:.94}
.mic svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round}
.mic[aria-pressed="true"]{background:var(--ribbon)}
.mic[aria-pressed="true"]::after{content:"";position:absolute;inset:-6px;border-radius:50%;border:2px solid #C43F8C;animation:ping 1.5s ease-out infinite}
@keyframes ping{from{opacity:.8;scale:.9}to{opacity:0;scale:1.35}}
.cap-note{margin-top:14px;max-width:70ch}

.sp-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(300px,1fr);gap:22px;align-items:start}
.sp-input{padding:24px;display:grid;gap:12px}
.sp-input textarea{width:100%;resize:vertical;border:1px solid var(--line);border-radius:var(--r-md);background:var(--bg);color:var(--ink);
  font:inherit;font-size:clamp(24px,2.6vw,34px);font-weight:600;letter-spacing:-.02em;line-height:1.2;padding:14px 18px}
.sp-input textarea:focus{outline:2px solid var(--blue);outline-offset:0;border-color:transparent}
.sp-strip{display:flex;flex-wrap:wrap;gap:6px;min-height:44px;align-items:center}
.chip{min-width:38px;height:42px;padding:0 10px;border:0;border-radius:10px;background:var(--bg);font-size:20px;font-weight:600;color:var(--ink);cursor:pointer;transition:background .15s,color .15s,scale .15s}
.chip:hover{background:color-mix(in srgb,var(--blue) 10%,var(--bg))}
.chip.on{background:var(--blue);color:#fff;scale:1.08}
.chip.off{display:inline-grid;place-items:center;opacity:.35;cursor:default}
.sp-strip .gap{width:14px}
.sp-player{padding:22px;display:grid;gap:14px;position:sticky;top:76px}
.sp-now{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.sp-now b{font-size:64px;font-weight:700;line-height:.9;letter-spacing:-.04em;min-height:.9em}
.sp-controls{display:flex;align-items:center;justify-content:center;gap:14px}
.sp-controls .btn{min-width:110px}
.sp-player .iconbtn{width:44px;height:44px;background:var(--bg)}
.sp-stage{position:relative}
.sp-video{width:100%;aspect-ratio:1;object-fit:contain;background:var(--cam);border-radius:var(--r-lg);display:block}
.sp-missing{aspect-ratio:1;border-radius:var(--r-lg);background:var(--cam);display:grid;place-items:center;overflow:hidden;position:relative}
.sp-missing img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:.55}
.sp-missing p{position:relative;color:#fff;font-size:14px;background:rgba(40,40,44,.7);backdrop-filter:blur(12px);padding:8px 14px;border-radius:999px}
.sp-now b.long{font-size:clamp(30px,3vw,40px);letter-spacing:-.025em}
.chip.word{font-size:16px;padding:0 14px;background:color-mix(in srgb,var(--magenta) 10%,var(--bg))}
.chip.word.on{background:var(--magenta);color:#fff}

/* ---------- record ---------- */
.rec-head{display:flex;justify-content:space-between;gap:24px;align-items:end;flex-wrap:wrap;margin-bottom:28px}
.rec-tools{display:flex;gap:10px;flex-wrap:wrap;align-items:end}
.field{display:grid;gap:4px;font-size:13px;color:var(--muted)}
.field input{border:1px solid var(--line);background:var(--bg);border-radius:var(--r-md);padding:10px 14px;min-height:44px;color:var(--ink);font-size:15px}
.rec-grid{display:grid;grid-template-columns:minmax(280px,.9fr) 1.5fr;gap:22px;align-items:start}
.rec-list{padding:20px}
.rec-list .tiles{grid-template-columns:repeat(auto-fill,minmax(62px,1fr));gap:8px}
.rec-list .tile{padding:8px 9px;background:var(--bg)}
.rec-list .tile .g{font-size:24px}
.rec-actions{display:flex;flex-wrap:wrap;gap:10px;padding:0 20px 20px}
.rec-info{padding:16px 20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:baseline}
.rec-info b{font-size:24px}
.rec-info a{color:var(--link)}
.tips{padding:16px 20px 20px;color:var(--muted);font-size:14px;border-top:1px solid var(--line);margin-top:4px}
.tips ul{margin:6px 0 0;padding-left:18px}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .bento{grid-template-columns:1fr 1fr;grid-template-areas:"w w" "a b" "d d" "r r"}
}
@media (max-width:900px){
  .hero-title .ln{white-space:normal}
  .learn-grid,.rec-grid,.name-grid,.tx-grid,.sp-grid{grid-template-columns:1fr}
  .sp-player{position:static}
  .tabs{width:100%}
  .tabs a{flex:1;text-align:center;padding:9px 8px;font-size:14px}
  .cap-bar .tx-actions{margin-left:0;width:100%}
  .tx-panel{order:-1;min-height:160px}
  .ref-card{position:static;grid-template-columns:120px 1fr;align-items:center}
  .ref-card .ref-toggle{display:none}
  .ref-card .label b{font-size:52px}
  .modes{grid-template-columns:1fr}
  .mission{grid-template-columns:1fr}
  .mission-copy{padding:56px var(--gut)}
  .mission-media{padding:48px var(--gut)}
}
@media (max-width:640px){
  .hero-title{line-height:1.2}
  .sp.s2,.sp.s3,.dot{display:none}
  .sp.s1{width:18px;left:0;top:-6px}
  .top{flex-wrap:wrap;height:auto;padding-top:10px;padding-bottom:10px;gap:8px 16px}
  .nav{order:3;width:100%;justify-content:space-around}
  .stage{aspect-ratio:3/4}
  .bento{grid-template-columns:1fr;grid-template-areas:"w" "a" "b" "d" "r"}
  .cell.row{grid-template-columns:1fr}
  .stats{gap:8px}
  .stat{padding:14px 10px;border-radius:var(--r-md)}
  .stat b{font-size:30px}
  .stat span{font-size:12px;line-height:1.3}
  .tiles{grid-template-columns:repeat(auto-fill,minmax(68px,1fr));gap:8px}
  .tile .g{font-size:26px}
  .options{grid-template-columns:1fr 1fr}
  .prompt b{font-size:64px}
  .ribbon path{stroke-width:44}
}
@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}.ribbon path,.circled path,.under path,.loop path{stroke-dashoffset:0}}