/* DermCase motion layer. Everything here is scoped so that without JS, or with
   reduced motion (.js is never added), pages render fully visible and static. */

/* Scroll progress, drawn with the Fitzpatrick strip */
.js .spectrum[data-progress]{position:fixed;top:0;left:0;right:0;z-index:60}
.js .spectrum[data-progress]::after{content:"";position:absolute;top:0;bottom:0;right:0;width:calc((1 - var(--sp,0)) * 100%);background:color-mix(in srgb,var(--canvas) 82%,transparent)}

/* Statement: words darken as you read */
.statement{padding:clamp(72px,12vw,168px) 0}
.statement p{font-size:clamp(28px,4.6vw,64px);line-height:1.16;letter-spacing:-.04em;font-weight:650;max-width:19em;text-wrap:balance}
html:lang(ko) .statement p{line-height:1.38;letter-spacing:-.03em}
.js .statement .w{--a:calc(var(--i) / var(--n) * .8);--t:clamp(0,calc((var(--p,0) - var(--a)) / .2),1);color:color-mix(in srgb,var(--ink) calc(var(--t) * 100%),var(--ink-3))}

/* Generic rise reveal, used sparingly */
.js .rv{opacity:0;transform:translateY(14px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .rv.in{opacity:1;transform:none}

/* Evidence bars grow when you reach them */
.js .gv .gauge b{transform:scaleY(0);transform-origin:bottom;transition:transform .8s var(--ease)}
.js .gv .gauge b:nth-child(2){transition-delay:.12s}
.js .gv .gauge b:nth-child(3){transition-delay:.24s}
.js .gv.in .gauge b{transform:none}

/* The pinned light-table scene */
.scene{--p:1;--bed:#1A1D23;--bed-line:#5A5F68;background:#0E1013;color:var(--bed-ink)}
:root[data-theme="dark"] .scene{background:#050607}
.scene-stage{padding:clamp(56px,8vw,112px) 0}
.scene-grid{display:grid;gap:44px}
@media(min-width:900px){.scene-grid{grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:56px;align-items:center}}
.scene .h2{color:var(--bed-ink)}
.rail{position:relative;margin-top:36px}
.rail ol{padding-left:28px;display:grid;gap:26px}
.rail::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:2px;background:#2B2F37;border-radius:2px}
.rail-fill{position:absolute;left:0;top:4px;width:2px;height:calc((100% - 8px) * var(--p));background:var(--bed-ink);border-radius:2px}
.rail h3{font-size:20px;font-weight:700;letter-spacing:-.02em;color:var(--bed-ink);transition:color .3s}
.rail p{margin-top:6px;font-size:15px;line-height:1.65;color:var(--bed-ink-2);max-width:34ch;transition:color .3s}
.scene[data-step] .rail li h3{color:#6E7480}
.scene[data-step] .rail li p{color:#7C838E}
.scene[data-step="1"] .rail li:nth-child(1) h3,.scene[data-step="2"] .rail li:nth-child(2) h3,.scene[data-step="3"] .rail li:nth-child(3) h3{color:var(--bed-ink)}
.scene[data-step="1"] .rail li:nth-child(1) p,.scene[data-step="2"] .rail li:nth-child(2) p,.scene[data-step="3"] .rail li:nth-child(3) p{color:var(--bed-ink-2)}
.scene-vis{display:grid;gap:22px;align-items:start}
@media(min-width:900px){.scene-vis{grid-template-columns:232px minmax(0,1fr);gap:26px}}
.lens{aspect-ratio:1;padding:22px;position:relative;overflow:hidden;max-width:240px}
.lens svg,.lens-img{width:100%;height:100%}
.lens-img{display:block;border-radius:50%;object-fit:cover}
.scan{position:absolute;left:0;right:0;top:0;height:2px;background:var(--bed-ink);box-shadow:0 0 22px 3px rgba(233,235,238,.3);opacity:0;pointer-events:none}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chips li{display:inline-flex;align-items:center;gap:0;border:1px solid #343A44;border-radius:999px;padding:5px 12px;font-size:13px;font-weight:600;color:var(--bed-ink)}
.chips .cm::after{content:","}
.chips .nx{margin-left:.35em}
.chips .dot{display:inline-block;width:11px;height:11px;border-radius:50%;margin-right:7px}
.lens-cap{margin-top:12px;font-size:12.5px;line-height:1.55;color:var(--bed-ink-2)}
.scene .brief{color:var(--ink)}
.scene-brief .brief-head{position:static;padding:12px 18px}
.scene-brief .sec{padding:18px 20px}
.scene-brief .dx h3{font-size:28px}
.scene-brief .rationale{font-size:14px;margin-top:8px;line-height:1.6}
.scene-brief .mini-ref{grid-template-columns:96px minmax(0,1fr)}
.ref-open{position:relative;background:linear-gradient(currentColor,currentColor) 0 100%/0 1.5px no-repeat}
.pop{display:inline-flex;align-items:center;height:22px;padding:0 9px;margin-left:8px;border-radius:999px;background:var(--ink);color:var(--canvas);font-size:11.5px;font-weight:700;vertical-align:middle;white-space:nowrap}
@media(max-height:780px){.scene-brief .sec{padding:12px 18px}.scene-brief .dx h3{font-size:24px}.scene-brief .rationale{font-size:13px}.lens{padding:16px}}

/* Pinned mode (desktop, JS on): the stage sticks while scroll drives the story */
.scene.pin .scene-track{height:380vh}
.scene.pin .scene-stage{position:sticky;top:0;height:100vh;padding:60px 0 0;display:grid;align-items:center}
.scene.pin .sc{--t:clamp(0,calc((var(--p) - var(--a)) / (var(--b) - var(--a))),1);opacity:var(--t);transform:translateY(calc((1 - var(--t)) * 22px));will-change:opacity,transform}
.scene.pin .gauge.sc{opacity:1;transform:none}
.scene.pin .gauge b{transform:scaleY(var(--t));transform-origin:bottom}
.scene.pin .scan{opacity:calc(1 - (2 * var(--t) - 1) * (2 * var(--t) - 1));top:calc(var(--t) * 100%);transform:none}
.scene.pin .ref-open{opacity:1;transform:none;background-size:calc(var(--t) * 100%) 1.5px}
.scene.pin .pop{transform:translateY(calc((1 - var(--t)) * 6px)) scale(calc(.9 + var(--t) * .1))}

/* Not pinned (mobile, no JS, reduced motion): fully assembled, with a gentle reveal on mobile */
.js .scene:not(.pin) .sc[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .scene:not(.pin) .sc[data-reveal].in{opacity:1;transform:none}
.scene:not(.pin) .ref-open{background-size:100% 1.5px}

/* Privacy: the photo dissolves, the saved case stays */
.flow{--t:1;margin-top:clamp(28px,4vw,48px);display:grid;grid-template-columns:minmax(0,1fr) 48px minmax(0,1fr);gap:clamp(10px,3vw,28px);align-items:center;max-width:760px}
.js .flow{--t:clamp(0,calc((var(--p,0) - .12) / .5),1)}
.flow-card{border:1px solid var(--line-2);border-radius:var(--r-3);padding:20px;background:var(--surface);display:grid;gap:14px;justify-items:start;align-content:start;min-height:196px}
.flow-card b{font-size:16px;font-weight:700;letter-spacing:-.02em}
.flow-card small{display:block;font-size:13px;line-height:1.55;color:var(--ink-3);min-height:40px}
.flow-card .lens-mini{width:84px;height:84px;border-radius:50%;object-fit:cover}
.flow-photo .lens-mini{opacity:calc(1 - var(--t) * .86);filter:blur(calc(var(--t) * 6px))}
.flow-photo small{opacity:calc(.25 + var(--t) * .75)}
.flow-case small{opacity:.95}
.flow-line{width:48px;height:2px;background:var(--line-2);position:relative}
.flow-line::after{content:"";position:absolute;right:-1px;top:-4px;width:9px;height:9px;border-top:2px solid var(--line-2);border-right:2px solid var(--line-2);transform:rotate(45deg)}
.mini-brief{width:100%;display:grid;gap:7px}
.mini-brief i{display:block;height:8px;border-radius:4px;background:var(--line-2)}
.mini-brief i:nth-child(1){width:46%;height:12px;background:var(--ink)}
.mini-brief i:nth-child(2){width:92%}.mini-brief i:nth-child(3){width:78%}
@media(max-width:560px){.flow{grid-template-columns:1fr;max-width:420px}.flow-line{width:2px;height:28px;margin:0 auto}.flow-line::after{right:-4px;top:auto;bottom:-1px;transform:rotate(135deg)}}

/* The brand mark drifts into place in the closing band */
.js .band-mark{transform:translateY(calc((1 - var(--p,1)) * 90px)) rotate(calc((1 - var(--p,1)) * -10deg))}

/* ===== Hero: intro sequence + interactive dermatoscope ===== */
.hero{overflow-x:clip}
.hero-vis{position:relative;display:grid;justify-items:stretch}
.derm-wrap{width:min(100%,500px);justify-self:start;transform:translate3d(calc(var(--px,0) * -7px),calc(var(--py,0) * -7px),0);transition:transform .3s ease-out}
.derm{position:relative;width:100%;aspect-ratio:1;border-radius:50%;--lx:50%;--ly:50%;--tx:50%;--lr:96px;cursor:crosshair;touch-action:pan-y;box-shadow:0 0 0 7px var(--canvas),0 0 0 8px var(--line-2),0 50px 80px -44px color-mix(in srgb,var(--ink) 50%,transparent)}
.derm-field{position:absolute;inset:0;border-radius:50%;overflow:hidden}
.derm canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.derm-lens,.derm-ring,.derm-tag{display:none}
.derm.dm-on .derm-lens,.derm.dm-on .derm-ring,.derm.dm-on .derm-tag{display:block}
.derm-lens{position:absolute;inset:0;clip-path:circle(var(--lr) at var(--lx) var(--ly))}
.derm-lens canvas{transform-origin:var(--lx) var(--ly);transform:scale(1.9)}
.derm-ring{position:absolute;left:0;top:0;width:calc(var(--lr) * 2);height:calc(var(--lr) * 2);transform:translate(calc(var(--lx) - var(--lr)),calc(var(--ly) - var(--lr)));border-radius:50%;border:2px solid rgba(255,255,255,.92);box-shadow:0 0 0 1px rgba(14,16,19,.35),0 14px 34px rgba(14,16,19,.35),inset 0 0 22px rgba(255,255,255,.22);pointer-events:none}
.derm-tag{position:absolute;left:var(--tx);top:calc(var(--ly) + var(--lr) + 10px);transform:translateX(-50%);padding:5px 12px;border-radius:999px;background:var(--ink);color:var(--canvas);font-size:12.5px;font-weight:600;white-space:nowrap;pointer-events:none}
.derm-cap{margin-bottom:18px;font-size:12.5px;line-height:1.6;color:var(--ink-3)}
@media(hover:none){.derm-cap .hint{display:none}}
.card-wrap{width:min(100%,470px);justify-self:end;margin-top:-64px;position:relative;z-index:2;transform:translate3d(calc(var(--px,0) * 10px),calc(var(--py,0) * 8px),0);transition:transform .3s ease-out}
@media(max-width:700px){.card-wrap{margin-top:-36px}.derm-wrap{width:100%}}

/* one orchestrated entrance: words rise out of masks, the lens pulls into focus, the brief assembles */
.js .display .wm{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.12em;margin-bottom:-.12em}
.js .display .wm>span{display:inline-block;transform:translateY(110%);animation:wmrise .95s var(--ease) forwards;animation-delay:calc(.1s + var(--k) * 70ms)}
@keyframes wmrise{to{transform:none}}
.js .doc-main h1 .wm{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.12em;margin-bottom:-.12em}
.js .doc-main h1 .wm>span{display:inline-block;transform:translateY(110%);animation:wmrise .9s var(--ease) forwards;animation-delay:calc(.05s + var(--k) * 60ms)}
.js .hero .lede,.js .hero .cta-row,.js .hero .assure{opacity:0;animation:fadein .8s var(--ease) .8s forwards}
.js .hero .cta-row{animation-delay:.92s}.js .hero .assure{animation-delay:1.04s}
@keyframes fadein{to{opacity:1}}
.js .derm{animation:focuspull 1.5s var(--ease) .2s both}
@keyframes focuspull{from{opacity:0;filter:blur(20px);transform:scale(.93)}to{opacity:1;filter:none;transform:none}}
.js .sample .rise:nth-child(1){animation-delay:.95s}.js .sample .rise:nth-child(2){animation-delay:1.1s}.js .sample .rise:nth-child(3){animation-delay:1.4s}.js .sample .rise:nth-child(4){animation-delay:1.7s}

/* ===== Sources ticker (outlined type, skin-tone separators) ===== */
.ticker{padding:clamp(30px,4.5vw,56px) 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden}
.ticker-label{font-size:13px;font-weight:600;color:var(--ink-3);margin-bottom:16px}
.ticker-track{display:flex;flex-wrap:wrap}
.js .ticker-track{flex-wrap:nowrap;width:max-content;will-change:transform}
.ticker-row{display:flex;align-items:center;flex:none;flex-wrap:wrap}
.js .ticker-row{flex-wrap:nowrap}
.ticker-row span{display:inline-flex;align-items:center;font-size:clamp(40px,7vw,96px);font-weight:700;letter-spacing:-.045em;line-height:1.15;white-space:nowrap}
.ticker-row span::after{content:"";width:.16em;height:.16em;border-radius:50%;margin:0 clamp(24px,3.4vw,48px);background:var(--f3)}
.ticker-row span:nth-child(6n+1)::after{background:var(--f1)}.ticker-row span:nth-child(6n+2)::after{background:var(--f2)}
.ticker-row span:nth-child(6n+4)::after{background:var(--f4)}.ticker-row span:nth-child(6n+5)::after{background:var(--f5)}.ticker-row span:nth-child(6n+6)::after{background:var(--f6)}
.ticker-row span:nth-child(even){color:transparent;-webkit-text-stroke:1.5px var(--ink)}

/* ===== Bento: what is inside every brief ===== */
.bento{margin-top:clamp(32px,5vw,56px);display:grid;gap:14px;grid-template-columns:repeat(12,1fr)}
.tile{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-3);background:var(--surface);padding:26px;display:flex;flex-direction:column;gap:22px;min-height:290px;transition:border-color .2s}
.tile::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .25s;background:radial-gradient(280px circle at var(--mx,50%) var(--my,0%),color-mix(in srgb,var(--ink) 9%,transparent),transparent 70%)}
.tile:hover{border-color:var(--line-2)}.tile:hover::before{opacity:1}
.tile h3{font-size:20px;font-weight:700;letter-spacing:-.025em;line-height:1.25}
.tile p{margin-top:8px;font-size:14.5px;line-height:1.65;color:var(--ink-2);max-width:42ch}
.tile .vis{margin-top:auto;position:relative}
@media(min-width:900px){.t-cmp{grid-column:span 7}.t-icd{grid-column:span 5}.t-ref,.t-lang,.t-pdf{grid-column:span 4}}
@media(max-width:899px){.tile{grid-column:1/-1}}
.js .rv{transition-delay:var(--d,0s)}
.mt{display:grid;grid-template-columns:76px repeat(3,minmax(0,1fr));border-top:1px solid var(--line-2)}
.mt>*{padding:11px 10px 11px 0;border-bottom:1px solid var(--line);font-size:13px;display:flex;flex-direction:column;justify-content:center;gap:6px;min-width:0}
.mt b{font-weight:700;letter-spacing:-.01em;line-height:1.3}
.mt .rl{color:var(--ink-3);font-weight:600;font-size:12.5px}
.mt i{display:block;height:7px;border-radius:4px;background:var(--line-2)}
.icd-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:6px 14px;padding:14px 0;border-top:1px solid var(--line-2)}
.icd-row+.icd-row{border-top-color:var(--line)}
.icd-row .r{grid-column:1/-1;font-size:12.5px;font-weight:600;color:var(--ink-3)}
.icd-row b{grid-column:1;font-size:clamp(22px,2.4vw,30px);letter-spacing:-.035em;line-height:1.15}
.icd-row .tag{grid-column:3}
.icd-row.dim b{font-size:19px;color:var(--ink-2)}
.ref-demo{font-size:15px;font-weight:600;line-height:1.5;letter-spacing:-.01em;text-decoration:none}
.ref-demo .u{background:linear-gradient(currentColor,currentColor) 0 100%/0 1.5px no-repeat;transition:background-size .6s var(--ease)}
.tile:hover .ref-demo .u{background-size:100% 1.5px}
.tile .pop{margin:12px 0 0;display:inline-flex}
.lang-vis{display:grid;gap:12px}
.lang-vis div{display:flex;align-items:center;gap:12px;padding:14px 0;border-top:1px solid var(--line)}
.lang-vis b{font-size:clamp(22px,2.2vw,28px);letter-spacing:-.035em}
.chip{display:inline-flex;align-items:center;height:24px;padding:0 9px;border-radius:6px;background:var(--ink);color:var(--canvas);font-size:12px;font-weight:700}
.paper{position:relative;width:132px;aspect-ratio:3/4;border:1px solid var(--line-2);border-radius:8px;background:var(--surface);padding:0 0 12px;overflow:hidden;display:grid;align-content:start;gap:7px;box-shadow:0 18px 30px -18px color-mix(in srgb,var(--ink) 35%,transparent);transform:rotate(-3deg);transition:transform .45s var(--ease)}
.tile:hover .paper{transform:rotate(0deg) translateY(-4px)}
.paper .spectrum{margin-bottom:6px}
.paper i.pl{display:block;height:6px;margin:0 12px;border-radius:3px;background:var(--line-2)}
.paper i.pl.h{height:10px;width:55%;background:var(--ink)}
.pdf-chip{position:absolute;right:10px;bottom:10px;padding:3px 8px;border-radius:5px;background:var(--ink);color:var(--canvas);font-size:11px;font-weight:700}

/* ===== Tactile depth: film grain on dark surfaces, a measurement ring on the lens ===== */
/* grain only on the closing band: a background image inside the pinned scene made scrolling stutter */
.band{background-image:url(/assets/grain.png);background-size:128px 128px}
.lens::after{content:"";position:absolute;inset:7px;border-radius:50%;pointer-events:none;background:repeating-conic-gradient(from 0deg,var(--bed-line) 0 .8deg,transparent .8deg 6deg);-webkit-mask:radial-gradient(farthest-side,transparent calc(100% - 7px),#000 calc(100% - 7px));mask:radial-gradient(farthest-side,transparent calc(100% - 7px),#000 calc(100% - 7px));opacity:.7}
.scene.pin .lens::after{transform:rotate(calc(var(--p) * 160deg));will-change:transform}

/* ===== Footer wordmark ===== */
.wordmark{font-size:clamp(56px,17.5vw,260px);line-height:.9;letter-spacing:-.065em;font-weight:520;white-space:nowrap;color:var(--line-2);overflow:hidden;padding:8px 0 22px;user-select:none}
.wordmark .c{display:inline-block}

/* hero: headline and CTA stay in the first screen; the tall visual hangs beside them */
@media(min-width:980px){.hero-grid{align-items:start}.hero-grid>div:first-child{padding-top:clamp(0px,5vw,64px)}}
.t-ref .vis{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.tile .pop{margin:0}
@media(max-width:520px){
  .mt{grid-template-columns:auto repeat(3,minmax(0,1fr))}
  .mt .rl{white-space:nowrap}
  .mt>*{padding-right:7px}
  .mt b{font-size:11.5px;overflow-wrap:anywhere;word-break:normal}
  .mt .rl{font-size:11.5px}
}