/* ZIPIFY — FEEL THE ZIP. */
:root{
  --canvas:#0B0B0C;
  --panel:#141517;
  --panel-2:#1B1D20;
  --line:#26292D;
  --line-strong:#3C4046;
  --steel:#B9BDC2;
  --bone:#F3F1EC;
  --text-primary:#F3F1EC;
  --text-secondary:#A9ADB3;
  --accent:#E33B2E;
  --accent-strong:#C93122;
  --accent-hover:#E33B2E;
  --accent-muted:rgba(227,59,46,.16);
  --tshadow:0 1px 2px rgba(5,5,10,.95),0 3px 12px rgba(5,5,10,.78),0 10px 44px rgba(5,5,10,.8);
  --ease:cubic-bezier(.22,.61,.2,1);
  --ease-io:cubic-bezier(.6,0,.2,1);
  --font-display:"Saira Condensed","IBM Plex Sans KR",system-ui,sans-serif;
  --font-body:"IBM Plex Sans KR",system-ui,-apple-system,"Apple SD Gothic Neo",sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{overflow-x:hidden;overflow-x:clip;scroll-behavior:smooth}
body{
  margin:0;overflow-x:hidden;overflow-x:clip;
  background:var(--canvas);color:var(--text-primary);
  font-family:var(--font-body);font-size:16px;line-height:1.7;
  word-break:keep-all;overflow-wrap:break-word;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,p,dl,dd,figure,ol,ul{margin:0;padding:0}
li{list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
section{scroll-margin-top:96px}

.mono{font-family:var(--font-mono)}
.skip{position:absolute;left:16px;top:-60px;z-index:100;background:var(--bone);color:var(--canvas);padding:10px 16px;border-radius:6px;transition:top .3s var(--ease)}
.skip:focus{top:14px}

/* ── 환경 레이어: 그레인 ───────────────────────── */
.grain{
  position:fixed;inset:-60px;z-index:5;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E");
  animation:grain-drift 120s linear -40s infinite alternate;
}
@keyframes grain-drift{from{transform:translate(0,0)}to{transform:translate(46px,-38px)}}
body.paused *,body.paused *::before,body.paused *::after{animation-play-state:paused!important}

/* ── 내비게이션 ───────────────────────────────── */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:50;
  display:flex;align-items:center;gap:32px;
  padding:14px min(4vw,44px);
  background:rgba(11,11,12,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.wordmark{
  font-family:var(--font-display);font-weight:700;font-size:26px;letter-spacing:.14em;
  text-decoration:none;display:inline-flex;align-items:baseline;gap:6px;
}
.wm-tick{width:7px;height:7px;border-radius:50%;background:var(--accent);transform:translateY(-1px)}
.wordmark.small{font-size:22px}
.nav-links{display:flex;gap:26px;margin-left:auto}
.nav-links a{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.12em;text-decoration:none;
  color:var(--text-secondary);transition:color .3s var(--ease);
}
.nav-links a:hover{color:var(--bone)}

/* ── 버튼 ─────────────────────────────────────── */
.btn{
  display:inline-block;text-decoration:none;text-align:center;
  font-family:var(--font-body);font-weight:700;font-size:15px;letter-spacing:.02em;
  padding:13px 26px;border-radius:8px;border:1px solid transparent;
  transition:background-color .3s var(--ease),border-color .3s var(--ease),color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.btn-primary{background:var(--accent-strong);color:#fff;position:relative}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 8px 28px var(--accent-muted)}
.btn-ghost{border-color:var(--line-strong);color:var(--bone)}
.btn-ghost:hover{border-color:var(--steel)}
.btn-ghost-dark{border-color:rgba(11,11,12,.4);color:#141517}
.btn-ghost-dark:hover{border-color:#141517}
.btn-nav{padding:9px 18px;font-size:13.5px;background:transparent;border-color:var(--line-strong);color:var(--bone)}
.btn-nav:hover{border-color:var(--accent);color:#fff;background:var(--accent-strong)}
@media (pointer:coarse){.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center}}

/* ── 히어로: 여정 ─────────────────────────────── */
.hero{position:relative}
.journey{height:750vh}
.stage{position:sticky;top:0;height:100vh;overflow:hidden;background:var(--canvas)}

.chamber{position:absolute;inset:0;display:flex;align-items:flex-end;justify-content:center;padding-bottom:5vh}
.chamber-glow{
  position:absolute;inset:0;opacity:var(--glow,0);
  background:radial-gradient(ellipse 46% 64% at 50% 52%,#F3F1EC 0%,#E7E3DA 42%,#C9C5BC 68%,rgba(11,11,12,0) 100%);
}
.chamber-product{
  width:auto;max-height:50vh;max-width:30vw;position:relative;
  mix-blend-mode:multiply;
  opacity:var(--reveal,0);transform:scale(calc(.92 + .08*var(--reveal,0)));
}
.flap{position:absolute;inset:0;background:linear-gradient(120deg,#131416 0%,#0C0D0E 46%,#101113 74%,#080809 100%)}
.flap-l{box-shadow:inset -40px 0 80px -30px rgba(0,0,0,.8)}
.flap-r{box-shadow:inset 40px 0 80px -30px rgba(0,0,0,.8)}
.zip-svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.tape{stroke:#1E2023;stroke-width:22;fill:none}
.teeth{stroke:#B9BDC2;stroke-width:11;stroke-dasharray:4.5 6.5;fill:none}
.teeth-c1,.teeth-c2{stroke-width:9;stroke-dasharray:4.5 6.5}
.slider{filter:drop-shadow(0 6px 14px rgba(0,0,0,.6))}

/* 영상 스크럽 레이어 (Blob 로드 완료 시 .video-ready로 켜짐) */
.hero-video{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:0;transition:opacity .8s var(--ease);
  will-change:transform;transform:translateZ(0);
}
.vscrim{
  position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .8s var(--ease);
  background:radial-gradient(ellipse 120% 90% at 50% 45%,rgba(10,10,18,0) 35%,rgba(10,10,18,.55) 100%);
}
.stage.video-ready .hero-video,.stage.video-ready .vscrim{opacity:1}
.stage.video-ready .flap,.stage.video-ready .zip-svg,.stage.video-ready .chamber{opacity:0;transition:opacity .8s var(--ease)}
.stage.video-ready .band::before{
  content:"";position:absolute;inset:-16% -12%;z-index:-1;pointer-events:none;
  opacity:calc(.25 + .75*var(--k,0));
  background:radial-gradient(ellipse 74% 62% at 50% 50%,rgba(5,5,10,.6) 0%,rgba(5,5,10,.4) 46%,rgba(5,5,10,0) 76%);
}
.stage.video-ready .band-1::before,.stage.video-ready .band-5::before{
  background:radial-gradient(ellipse 74% 62% at 50% 50%,rgba(5,5,10,.72) 0%,rgba(5,5,10,.5) 46%,rgba(5,5,10,0) 76%);
}
.stage.video-ready .band-5{text-shadow:var(--tshadow)}
.stage.video-ready .band-5 .display.dark{color:var(--bone)}
.stage.video-ready .band-5 .settle-sub{color:var(--text-secondary)}
.stage.video-ready .btn-ghost-dark{border-color:var(--line-strong);color:var(--bone)}
.stage.video-ready .btn-ghost-dark:hover{border-color:var(--steel)}

/* 히어로 밴드 */
.band{position:absolute;opacity:0;text-shadow:var(--tshadow);pointer-events:none;isolation:isolate}
.band.on{pointer-events:auto}
.band .btn{text-shadow:none}
.band-1{left:0;right:0;top:16vh;text-align:center}
.band-left{left:6vw;top:40vh;max-width:30vw}
.band-right{right:6vw;top:40vh;max-width:30vw;text-align:right}
.band-5{left:0;right:0;top:7.5vh;text-align:center;text-shadow:none}

.kicker{font-size:12.5px;letter-spacing:.22em;color:var(--steel);margin-bottom:14px}
.display{
  font-family:var(--font-display);font-weight:700;letter-spacing:.045em;line-height:1.02;
  font-size:clamp(52px,8.2vw,124px);text-transform:uppercase;
}
.display.dark{color:#101113}
.band-1 .sub{font-size:clamp(18px,1.6vw,24px);font-weight:500;margin-top:16px;color:var(--bone)}
.line-copy{font-size:clamp(24px,2.5vw,40px);font-weight:700;line-height:1.35;max-width:14ch}
.band-right .line-copy{margin-left:auto}
.band-5 .settle-sub{color:#3B3D40;font-size:clamp(15px,1.3vw,19px);font-weight:500;margin-top:12px;opacity:var(--ks,0)}
.settle-cta{display:flex;gap:14px;justify-content:center;margin-top:26px}
.band-5 .settle-cta{opacity:var(--kb,0);transform:translateY(calc(10px*(1 - var(--kb,0))))}

/* 텍스트 안무 */
.w{display:inline-block;white-space:pre}
.c{display:inline-block;white-space:pre}
.sr-line{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
/* (a) scatter: 문자 비산 조립 */
.fx-scatter .c{
  --kc:clamp(0,calc((var(--k,0) - var(--th,0))*2.6),1);
  opacity:var(--kc);
  transform:translate(calc((1 - var(--kc))*var(--jx,0px)),calc((1 - var(--kc))*var(--jy,0px))) rotate(calc((1 - var(--kc))*var(--jr,0deg)));
}
/* (f) drift-down: 단어 하강 */
.fx-drift .w{
  --kc:clamp(0,calc((var(--k,0) - var(--th,0))*2.8),1);
  opacity:var(--kc);transform:translateY(calc((1 - var(--kc))*-24px));
}
/* (e) word-rise: 단어 상승 */
.fx-rise .w{
  --kc:clamp(0,calc((var(--k,0) - var(--th,0))*3),1);
  opacity:var(--kc);transform:translateY(calc((1 - var(--kc))*26px));
}
/* (c) blur-to-sharp */
.blur-pair{position:relative}
.blur-pair .soft{filter:blur(10px);opacity:calc(1 - var(--k,0))}
.blur-pair .sharp{position:absolute;inset:0;opacity:var(--k,0)}

.chip{
  position:absolute;left:24px;bottom:22px;font-size:12px;letter-spacing:.14em;color:var(--steel);
  background:rgba(8,8,15,.55);border:1px solid rgba(96,96,126,.3);border-radius:10px;
  padding:7px 12px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  text-shadow:0 1px 3px rgba(5,5,10,.85);
}
.cue{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);opacity:var(--cue,1);transition:opacity .4s var(--ease)}
.cue span{
  display:block;width:22px;height:34px;border:2px solid var(--steel);border-radius:12px;position:relative;opacity:.75;
}
.cue span::after{
  content:"";position:absolute;left:50%;top:6px;width:4px;height:8px;margin-left:-2px;border-radius:2px;
  background:var(--steel);animation:cue-drop 2.2s var(--ease) -1.2s infinite;
}
@keyframes cue-drop{0%{transform:translateY(0);opacity:0}25%{opacity:1}70%{transform:translateY(12px);opacity:0}100%{transform:translateY(12px);opacity:0}}
@media (max-height:560px){.chip,.cue{display:none}}

/* ── 정적 히어로 ──────────────────────────────── */
.hero-static{display:none}

/* 정적 히어로 게이트: 아래 5개 쿼리는 app.js의 GATES와 문자 단위로 동일해야 한다 */
@media (max-width: 720px),
       (orientation: portrait) and (max-width: 1024px),
       (orientation: portrait) and (pointer: coarse),
       (orientation: landscape) and (pointer: coarse) and (max-height: 560px),
       (prefers-reduced-motion: reduce){
  .journey{display:none}
  .hero-static{
    display:flex;flex-direction:column;align-items:center;text-align:center;
    min-height:100svh;padding:120px 6vw 56px;gap:0;
  }
  .hero-static .sub{font-size:19px;font-weight:500;margin-top:14px}
  .hero-static .desc{color:var(--text-secondary);margin-top:10px}
  .hero-static .settle-cta{margin-top:26px;flex-wrap:wrap}
  .static-figure{
    margin-top:44px;background:var(--bone);border-radius:18px;padding:26px 26px 18px;position:relative;
    max-width:420px;width:100%;
  }
  .static-figure img{width:100%;height:auto}
}

/* ── 폴드 아래 공통 ───────────────────────────── */
.below{position:relative;max-width:1180px;margin:0 auto;padding:0 min(5vw,44px)}
.spine{
  position:absolute;top:0;bottom:0;left:50%;width:2px;margin-left:-1px;opacity:.4;pointer-events:none;
  background:repeating-linear-gradient(180deg,var(--line-strong) 0 6px,transparent 6px 15px);
  transform:scaleY(var(--spineK,0));transform-origin:top;
}
.sec{position:relative;z-index:1;padding:15vh 0}
.sec-title{font-size:clamp(28px,3.2vw,44px);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin:10px 0 18px}
.sec-lede{color:var(--text-secondary);max-width:46ch}
.fine{color:var(--text-secondary);font-size:13.5px;margin-top:26px}
.img-label{
  font-size:11px;letter-spacing:.2em;color:var(--steel);
  background:rgba(8,8,15,.55);border:1px solid rgba(96,96,126,.3);border-radius:8px;
  padding:4px 9px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}

/* 섹션 등장 안무 */
.part{opacity:0;transform:translateY(20px);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:var(--d,0s)}
.sec.in .part{opacity:1;transform:none}
.sec.settled .part{transition-delay:0s!important}
.why-svg .draw{stroke-dasharray:340;stroke-dashoffset:340;transition:stroke-dashoffset 1.6s var(--ease) .3s}
.sec.in .why-svg .draw{stroke-dashoffset:0}

/* S1 선언문 */
.sec-statement{padding-top:18vh;display:flex;justify-content:center}
.statement{
  background:var(--canvas);font-size:clamp(20px,2.1vw,29px);font-weight:500;line-height:1.75;
  max-width:44ch;text-align:center;padding:0 10px;
}

/* S2 WHY 카드 */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.why-card{
  background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:30px 28px;
  transition:border-color .35s var(--ease),transform .35s var(--ease),opacity .8s var(--ease);
}
.why-card:hover{border-color:var(--line-strong);transform:translateY(-4px)}
.why-svg{width:120px;height:36px;color:var(--steel);margin-bottom:20px}
.card-code{font-size:12px;letter-spacing:.2em;color:var(--steel)}
.why-card h3,.feel-card h3{font-size:19px;font-weight:700;margin:8px 0 10px}
.why-card p:last-child,.feel-card p:last-child{color:var(--text-secondary);font-size:14.5px}

/* S3 스포트라이트 */
.spot-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.spot-figure{
  background:var(--bone);border-radius:20px;padding:34px;position:relative;
  display:flex;align-items:center;justify-content:center;
}
.spot-figure img,.static-figure img{mix-blend-mode:multiply}
.spot-figure img{height:min(54vh,520px);width:auto;max-width:100%}
.spot-figure .img-label,.static-figure .img-label{position:absolute;left:14px;top:14px}
.spot-info>.part{margin-bottom:6px}
.spot-info p.part{color:var(--text-secondary);max-width:42ch}
.spec{margin:26px 0 30px;border-top:1px solid var(--line)}
.spec div{display:flex;align-items:baseline;gap:22px;padding:11px 2px;border-bottom:1px solid var(--line)}
.spec dt{width:96px;flex:none;font-size:12px;letter-spacing:.18em;color:var(--steel)}
.spec dd{font-weight:500}
.spec-note{font-size:11px;letter-spacing:.1em;color:var(--text-secondary);margin-left:8px}
/* S3b 제품 상세: 앵글 뷰어 + 디테일 카드 */
.sec-detail{padding-top:5vh;text-align:center}
.sec-detail .sec-lede{margin:0 auto}
.viewer{max-width:860px;margin:48px auto 0}
.viewer-stage{
  position:relative;background:var(--bone);border-radius:20px;padding:34px;
  cursor:grab;touch-action:pan-y;user-select:none;-webkit-user-select:none;
}
.viewer-stage.dragging{cursor:grabbing}
.viewer-stage .img-label{position:absolute;left:14px;top:14px}
.viewer-frame{position:relative;height:min(52vh,480px)}
.viewer-img{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  height:100%;width:auto;max-width:92%;object-fit:contain;
  mix-blend-mode:multiply;
  opacity:0;transition:opacity .3s var(--ease);pointer-events:none;
}
.viewer-img.on{opacity:1}
.viewer-bar{display:flex;align-items:center;justify-content:center;gap:26px;margin-top:22px}
.viewer-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line-strong);color:var(--steel);
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .3s var(--ease),color .3s var(--ease),opacity .3s var(--ease);
}
.viewer-btn svg{width:15px;height:15px}
.viewer-btn:hover{border-color:var(--steel);color:var(--bone)}
.viewer-btn:disabled{opacity:.3;cursor:default;border-color:var(--line);color:var(--text-secondary)}
.viewer-dots{display:flex;gap:12px}
.viewer-dots .dot{
  width:9px;height:9px;border-radius:50%;background:var(--line-strong);padding:0;
  transition:background-color .3s var(--ease),transform .3s var(--ease);
}
.viewer-dots .dot:hover{background:var(--steel)}
.viewer-dots .dot.on{background:var(--accent);transform:scale(1.25)}
@media (pointer:coarse){.viewer-dots .dot{position:relative}.viewer-dots .dot::after{content:"";position:absolute;inset:-18px}}
.viewer-readout{font-size:12px;letter-spacing:.18em;color:var(--steel);margin-top:16px}
.viewer-hint{color:var(--text-secondary);font-size:13.5px;margin-top:6px}
.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:56px;text-align:left}
.detail-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden;padding-bottom:26px}
.detail-crop{height:250px;background-color:var(--bone);background-repeat:no-repeat;background-blend-mode:multiply;margin-bottom:20px}
.crop-zip{background-image:url('master-front.jpg');background-size:300% auto;background-position:50% 58%}
.crop-frame{background-image:url('master-quarter.jpg');background-size:260% auto;background-position:54% 8%}
.crop-profile{background-image:url('master-side.jpg');background-size:340% auto;background-position:50% 42%}
.detail-card .card-code,.detail-card h3,.detail-card p{padding:0 26px}
.detail-card h3{font-size:19px;font-weight:700;margin:8px 0 10px}
.detail-card p:last-child{color:var(--text-secondary);font-size:14.5px}

/* S4 FEEL + 인터랙티브 순간 */
.sec-feel{text-align:center}
.sec-feel .sec-lede{margin:0 auto}
.pull-zone{margin:52px auto 60px;display:flex;flex-direction:column;align-items:center;gap:16px}
.pull-btn{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:10px;
  padding:22px 34px;border-radius:18px;border:1px solid var(--line);background:var(--panel);
  transition:border-color .35s var(--ease),box-shadow .35s var(--ease);
  touch-action:none;user-select:none;-webkit-user-select:none;
}
.pull-btn:hover{border-color:var(--line-strong)}
.pull-btn.holding{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-muted)}
.pull-btn.done{border-color:var(--accent)}
.pull-svg{width:72px;height:300px;overflow:visible}
.pull-slider{transform:translateY(calc(252px*var(--hold,0)));will-change:transform}
.pull-fill{stroke-dashoffset:calc(276*(1 - var(--hold,0)))}
.pull-readout{font-size:12px;letter-spacing:.16em;color:var(--steel)}
.pull-hint{color:var(--text-secondary);font-size:14.5px}
.feel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;text-align:left}
.feel-card{
  background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:30px 28px;
  opacity:0;transform:translateY(20px);
  transition:opacity .8s var(--ease),transform .8s var(--ease),border-color .5s var(--ease),background-color .5s var(--ease);
  transition-delay:var(--d,0s);
}
.sec.in .feel-card{opacity:.42;transform:none}
.sec.in .feel-card.lit{opacity:1;border-color:var(--line-strong);background:var(--panel-2)}
.feel-card.lit .card-code{color:var(--accent)}

/* S5 구조 */
.ana-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:center}
.ana-info>.part{margin-bottom:6px}
.ana-info>p.part{color:var(--text-secondary);max-width:40ch}
.ana-list{margin:26px 0 0;border-top:1px solid var(--line)}
.ana-list li{display:flex;align-items:baseline;gap:20px;padding:13px 2px;border-bottom:1px solid var(--line)}
.ana-list .mono{width:110px;flex:none;font-size:12px;letter-spacing:.16em;color:var(--steel)}
.ana-tiles{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.ana-tile{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--panel)}
.ana-tile img{width:100%;aspect-ratio:1/1;object-fit:cover;transition:transform .6s var(--ease)}
.ana-tile:hover img{transform:scale(1.04)}
.ana-tile figcaption{
  position:absolute;left:10px;bottom:10px;font-size:11px;letter-spacing:.18em;color:var(--bone);
  background:rgba(8,8,15,.6);border:1px solid rgba(96,96,126,.3);border-radius:8px;padding:4px 9px;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.ana-label{position:absolute;right:10px;top:10px;z-index:1}

/* S7 FAQ */
.sec-faq{text-align:center}
.faq-list{max-width:760px;margin:34px auto 0;background:var(--canvas);text-align:left}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;font-weight:700;font-size:17px;transition:color .3s var(--ease);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{color:var(--steel)}
.faq-mark{position:relative;width:14px;height:14px;flex:none}
.faq-mark::before,.faq-mark::after{
  content:"";position:absolute;background:var(--steel);left:0;top:6px;width:14px;height:2px;border-radius:1px;
  transition:transform .35s var(--ease);
}
.faq-mark::after{transform:rotate(90deg)}
details[open] .faq-mark::after{transform:rotate(0deg)}
.faq-list details p{padding:0 4px 22px;color:var(--text-secondary);max-width:60ch}

/* S8 대기자 */
.sec-waitlist{padding-bottom:18vh}
.wait-panel{
  background:var(--panel);border:1px solid var(--line);border-radius:24px;
  padding:clamp(36px,5vw,64px);max-width:720px;margin:0 auto;text-align:center;position:relative;overflow:hidden;
}
.wait-panel::before{
  content:"";position:absolute;inset:-40%;pointer-events:none;opacity:0;
  background:radial-gradient(ellipse 40% 30% at 50% 0%,var(--accent-muted),transparent 70%);
  animation:wait-glow 6s var(--ease) -2s infinite alternate;
}
@keyframes wait-glow{from{opacity:.4}to{opacity:1}}
.wait-title{font-size:clamp(44px,6vw,76px)}
.wait-title .dot{color:var(--accent)}
.wait-panel .sec-lede{margin:10px auto 34px}
.wait-form{position:relative;display:flex;flex-direction:column;gap:18px;text-align:left;max-width:460px;margin:0 auto}
.field label{display:block;font-size:13.5px;font-weight:500;margin-bottom:7px}
.field input{
  width:100%;background:var(--canvas);border:1px solid var(--line-strong);border-radius:8px;
  color:var(--bone);font:inherit;padding:12px 14px;transition:border-color .3s var(--ease);
}
.field input:focus{outline:none;border-color:var(--accent)}
.field input::placeholder{color:#5D6167}
.req{color:var(--accent)}
.opt{font-size:11px;color:var(--text-secondary);letter-spacing:.1em;margin-left:6px}
.consent{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:var(--text-secondary)}
.consent label{display:flex;gap:10px;align-items:flex-start;cursor:pointer}
.consent input{accent-color:var(--accent);width:16px;height:16px;margin-top:3px;flex:none}
.btn-submit{width:100%}
.btn-submit:disabled{background:var(--panel-2);color:#6A6E74;cursor:not-allowed;transform:none;box-shadow:none}
.form-pending{font-size:11.5px;letter-spacing:.12em;color:var(--steel);text-align:center}
.form-msg{min-height:1.4em;text-align:center;font-size:14.5px}
.form-msg.ok{color:var(--steel)}
.form-msg.err{color:var(--accent)}

/* ── 푸터 ─────────────────────────────────────── */
.footer{border-top:1px solid var(--line);padding:56px min(5vw,44px) 64px}
.foot-grid{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:auto 1fr auto;gap:48px;align-items:start}
.foot-tag{color:var(--text-secondary);font-size:14px;margin-top:8px}
.foot-notes{display:flex;flex-direction:column;gap:8px;color:var(--text-secondary);font-size:13px;max-width:56ch}
.foot-notes li{padding-left:14px;position:relative}
.foot-notes li::before{content:"";position:absolute;left:0;top:.62em;width:5px;height:2px;background:var(--line-strong)}
.foot-contact a{color:var(--steel);font-size:14px}
.foot-contact a:hover{color:var(--bone)}

/* ── 반응형 ───────────────────────────────────── */
@media (max-width:1024px){
  .why-grid,.feel-grid,.detail-grid{grid-template-columns:1fr 1fr}
  .spot-grid,.ana-grid{grid-template-columns:1fr;gap:36px}
  .spine{left:24px}
}
@media (max-width:640px){
  .nav{gap:16px}
  .nav-links{display:none}
  .why-grid,.feel-grid,.detail-grid{grid-template-columns:1fr}
  .sec{padding:11vh 0}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .viewer-stage{padding:22px}
  .viewer-frame{height:min(44vh,380px)}
  .ana-tiles{gap:10px}
}

/* ── Reduced motion: 최종 상태 고정 ───────────── */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .part,.sec .part,.feel-card,.sec.in .feel-card{opacity:1;transform:none}
  .why-svg .draw{stroke-dashoffset:0}
  .spine{transform:scaleY(1)}
  .pull-slider{transform:translateY(252px)}
  .pull-fill{stroke-dashoffset:0}
  .grain{animation:none}
}