:root {
  --blue: #0a8cff;
  --ink: #1b222c;
  --ink-2: #1d242c;
  --slate: #525f71;
  --slate-2: #7f838d;
  --slate-3: #9aa5b5;
  --paper: #f4f6f8;
  --paper-2: #dee0e4;
  --white: #fff;
  --line: rgba(27, 34, 44, 0.16);
  --line-dark: rgba(255, 255, 255, 0.16);
  --shell: min(1280px, calc(100vw - 64px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard", "Noto Sans KR", "Segoe UI", sans-serif;
  line-height: 1.65;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
code { color: var(--blue); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .92em; }
.shell { width: var(--shell); margin-inline: auto; }
.dark-one { color: var(--white); background: var(--ink); }
.dark-two { color: var(--white); background: var(--ink-2); }
.light-one { background: var(--paper); }
.light-two { background: var(--paper-2); }
.accent-section { color: var(--white); background: var(--blue); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  color: var(--white);
  background: var(--blue);
  transform: translateY(-180%);
  transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); }
.page-progress { position: fixed; inset: 0 0 auto; z-index: 200; height: 2px; pointer-events: none; }
.page-progress span { display: block; width: 0; height: 100%; background: var(--blue); }

/* 상단 탐색 */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  color: var(--white);
  border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease;
}
.site-header.scrolled {
  background: rgba(27, 34, 44, .88);
  border-color: var(--line-dark);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}
.header-inner { height: 72px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-icon { width: 38px; height: 38px; object-fit: cover; background: var(--paper); }
.brand-copy { display: grid; gap: 2px; line-height: 1.1; }
.brand-copy strong { font-size: 14px; letter-spacing: .08em; }
.brand-copy small { color: var(--slate-3); font-size: 9px; letter-spacing: .13em; text-transform: uppercase; }
.site-nav { display: flex; gap: 30px; color: var(--slate-3); font-size: 11px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.site-nav a { position: relative; padding: 8px 0; transition: color .2s ease; }
.site-nav a::after { content: ""; position: absolute; right: 0; bottom: 2px; left: 0; height: 1px; background: var(--blue); transform: scaleX(0); transform-origin: left; transition: transform .2s ease; }
.site-nav a:hover, .site-nav a:focus-visible, .site-nav a.active { color: var(--white); }
.site-nav a:hover::after, .site-nav a:focus-visible::after, .site-nav a.active::after { transform: scaleX(1); }
.menu-button { display: none; }

/* 공통 타이포그래피 */
.eyebrow { margin: 0; color: var(--blue); font-size: 10px; font-weight: 850; letter-spacing: .18em; text-transform: uppercase; }
.section-heading {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  column-gap: 54px;
  align-items: start;
}
.section-heading .eyebrow { grid-column: 1; grid-row: 1 / span 2; padding-top: 12px; }
.section-heading h2, .sticky-copy h2, .recording-copy h2, .closing h2 {
  margin: 0;
  font-size: clamp(42px, 5.1vw, 74px);
  line-height: 1.03;
  letter-spacing: -.065em;
}
.section-heading h2, .section-heading > p:last-child { grid-column: 2; }
.section-heading > p:last-child, .sticky-copy > p:last-child, .recording-copy > p {
  max-width: 760px;
  margin: 28px 0 0;
  color: var(--slate);
  font-size: 16px;
  line-height: 1.85;
}
.dark-one .section-heading > p:last-child, .dark-two .section-heading > p:last-child { color: var(--slate-3); }
.max-copy { max-width: none; }

/* 첫 화면 */
.hero { position: relative; min-height: 100svh; overflow: hidden; }
.hero::after { content: ""; position: absolute; right: 0; bottom: 0; left: 0; height: 1px; background: var(--line-dark); }
.hero-grid {
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(380px, .88fr);
  gap: 42px;
  align-items: end;
  padding-top: 150px;
  padding-bottom: 72px;
}
.hero-copy { position: relative; z-index: 2; padding-bottom: 7vh; }
.hero-slogan { margin: 24px 0 0; color: var(--blue); font-size: clamp(16px, 1.5vw, 22px); font-weight: 720; letter-spacing: -.02em; }
.hero h1 { margin: 34px 0 0; font-size: clamp(58px, 6.7vw, 108px); line-height: .96; letter-spacing: -.078em; }
.hero h1 span { color: var(--slate-3); }
.hero-description { max-width: 670px; margin: 34px 0 0; color: var(--slate-3); font-size: 17px; line-height: 1.8; }
.hero-actions { display: flex; align-items: center; gap: 26px; margin-top: 38px; }
.button { min-height: 50px; padding: 0 22px; display: inline-flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 800; }
.button-primary { color: var(--white); background: var(--blue); }
.button-primary:hover { background: #007be6; }
.text-link { display: inline-flex; align-items: center; gap: 12px; min-height: 50px; border-bottom: 1px solid rgba(255,255,255,.35); font-size: 13px; font-weight: 750; }
.text-link span { color: var(--blue); font-size: 19px; }
.hero-visual { position: relative; min-height: 720px; display: grid; align-items: end; justify-items: end; }
.motion-word {
  position: absolute;
  top: 12%;
  right: -10%;
  color: transparent;
  font-size: clamp(120px, 17vw, 280px);
  font-weight: 900;
  letter-spacing: -.1em;
  line-height: .8;
  -webkit-text-stroke: 1px rgba(255,255,255,.14);
  transform: rotate(90deg);
}
.device { overflow: hidden; background: var(--ink-2); }
.device-screen { overflow: hidden; background: var(--paper); }
.hero-device {
  position: relative;
  z-index: 1;
  width: min(340px, 68vw);
  margin: 0 8% 0 0;
  border: 5px solid #090c10;
  border-radius: 32px;
  box-shadow: 0 42px 110px rgba(0,0,0,.52);
  transform: translate3d(0, var(--parallax-y, 0), 0);
}
.hero-device-screen, .hero-device img { width: 100%; aspect-ratio: 393 / 852; object-fit: cover; }
.hero-meta {
  position: absolute;
  right: 0;
  bottom: 10px;
  z-index: 2;
  width: min(360px, 92%);
  margin: 0;
  padding: 18px 0 4px 24px;
  display: grid;
  gap: 10px;
  border-left: 1px solid var(--blue);
  background: rgba(27,34,44,.86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}
.hero-meta div { display: grid; grid-template-columns: 74px 1fr; gap: 12px; }
.hero-meta dt { color: var(--blue); font-size: 9px; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.hero-meta dd { margin: 0; font-size: 11px; font-weight: 700; }
.slogan-ticker { overflow: hidden; color: var(--slate-3); background: var(--ink-2); border-bottom: 1px solid var(--line-dark); }
.slogan-ticker > div { width: max-content; display: flex; gap: 64px; padding: 15px 0; animation: ticker 30s linear infinite; }
.slogan-ticker span { font-size: 9px; font-weight: 850; letter-spacing: .22em; }
.slogan-ticker span::after { content: "↗"; margin-left: 64px; color: var(--blue); }
@keyframes ticker { to { transform: translateX(-50%); } }

/* 제품 영상 */
.promo { padding: 150px 0; border-bottom: 1px solid var(--line-dark); }
.promo-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 410px); gap: 10vw; align-items: center; }
.promo .section-heading { display: block; }
.promo .section-heading .eyebrow { padding: 0; }
.promo .section-heading h2 { margin-top: 28px; }
.promo .section-heading > p:last-of-type { color: var(--slate-3); }
.promo-specs { margin-top: 42px; padding-top: 18px; display: flex; gap: 24px; border-top: 1px solid var(--line-dark); }
.promo-specs span { color: var(--slate-3); font-size: 10px; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; }
.video-stage { display: grid; justify-items: end; }
.promo-video-shell { width: min(380px, 78vw); aspect-ratio: 9 / 16; overflow: hidden; background: #090c10; box-shadow: 30px 36px 0 rgba(10,140,255,.16); }
.promo-video-shell video { width: 100%; height: 100%; object-fit: contain; }
.video-caption { width: min(380px, 78vw); margin: 18px 0 0; color: var(--slate-3); font-size: 9px; letter-spacing: .16em; text-align: left; }

/* 프로젝트 개요 */
.overview, .screen-journey, .problem, .solution, .iterations, .technology, .recording, .result, .privacy, .closing { padding: 150px 0; }
.overview-cards { margin-top: 90px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.metric-card { min-height: 290px; padding: 28px 32px 34px 0; display: flex; flex-direction: column; border-right: 1px solid var(--line); }
.metric-card + .metric-card { padding-left: 32px; }
.metric-card:last-child { border-right: 0; }
.metric-card > span { color: var(--blue); font-size: 10px; font-weight: 850; letter-spacing: .15em; }
.metric-card strong { margin-top: auto; font-size: 25px; line-height: 1.15; letter-spacing: -.04em; }
.metric-card p { margin: 15px 0 0; color: var(--slate); font-size: 14px; }
.project-facts { margin-top: 44px; color: var(--white); background: var(--ink); }
.project-facts div { display: grid; grid-template-columns: 160px 1fr; gap: 28px; padding: 19px 24px; border-bottom: 1px solid var(--line-dark); }
.project-facts div:last-child { border-bottom: 0; }
.project-facts span { color: var(--blue); font-size: 9px; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.project-facts strong { font-size: 13px; font-weight: 650; }

/* 앱 화면 흐름 */
.screen-journey { overflow: hidden; }
.phone-gallery { margin-top: 84px; padding: 0 4vw 100px; display: grid; grid-template-columns: repeat(3, minmax(0, 236px)); justify-content: center; gap: clamp(28px, 5vw, 76px); }
.screen-card { position: relative; margin: 0; }
.screen-card:nth-child(2) { transform: translateY(56px); }
.screen-card:nth-child(3) { transform: translateY(112px); }
.screen-card::before { content: ""; position: absolute; top: 0; bottom: 0; left: -22px; width: 1px; background: rgba(27,34,44,.22); }
.screen-card img { width: 100%; aspect-ratio: 472 / 1024; object-fit: cover; border: 4px solid var(--ink); border-radius: 23px; box-shadow: 0 26px 60px rgba(27,34,44,.2); }
.screen-card figcaption { margin-top: 16px; display: grid; grid-template-columns: 28px 1fr; gap: 10px; }
.screen-card figcaption span { color: var(--blue); font-size: 10px; font-weight: 850; }
.screen-card figcaption strong { font-size: 13px; }

/* 문제와 해결 */
.split-layout { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 9vw; }
.sticky-copy { position: sticky; top: 116px; align-self: start; }
.sticky-copy .eyebrow { margin-bottom: 26px; }
.problem-list { border-top: 1px solid var(--line); }
.problem-item { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 34px 0 52px; border-bottom: 1px solid var(--line); }
.problem-item > span { color: var(--blue); font-size: 10px; font-weight: 850; }
.problem-item strong { display: block; max-width: 520px; font-size: 27px; line-height: 1.18; letter-spacing: -.04em; }
.problem-item p { max-width: 560px; margin: 14px 0 0; color: var(--slate); }
.flow-diagram { margin-top: 84px; display: grid; grid-template-columns: repeat(4, 1fr); }
.flow-node { min-height: 260px; padding: 24px 28px 30px 0; display: flex; flex-direction: column; border-top: 2px solid var(--ink); border-right: 1px solid var(--line); }
.flow-node:not(:first-child) { padding-left: 28px; }
.flow-node span { color: var(--blue); font-size: 10px; font-weight: 850; }
.flow-node strong { margin-top: auto; font-size: 22px; line-height: 1.15; letter-spacing: -.035em; }
.flow-node small { margin-top: 12px; color: var(--slate); font-size: 12px; line-height: 1.65; }
.flow-arrow { display: none; }
.comparison-table { margin-top: 50px; border-top: 1px solid var(--ink); }
.comparison-table > div { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.comparison-table span { color: var(--slate); }
.comparison-table strong { color: var(--ink); }
.comparison-head { padding-block: 12px !important; color: var(--white); background: var(--ink); }
.comparison-head span { padding-left: 16px; color: var(--slate-3); font-size: 9px; font-weight: 850; letter-spacing: .15em; text-transform: uppercase; }

/* 시행착오 기록 */
.iterations { overflow: hidden; }
.case-stack { margin-top: 86px; }
.case-card { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr); gap: 7vw; align-items: center; padding: 86px 0; border-top: 1px solid var(--line-dark); }
.case-card:last-child { border-bottom: 1px solid var(--line-dark); }
.case-card.text-only { grid-template-columns: 1fr; }
.case-card.text-only .case-copy { max-width: 980px; }
.case-card:nth-child(odd):not(.text-only) .case-media { order: -1; }
.case-index { margin: 0; color: var(--blue); font-size: 10px; font-weight: 850; letter-spacing: .15em; }
.case-copy h3 { margin: 20px 0 0; font-size: clamp(34px, 4vw, 56px); line-height: 1.08; letter-spacing: -.055em; }
.before-after { margin-top: 38px; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.before-after > div { padding: 20px 0 0 18px; border-top: 1px solid var(--line-dark); border-left: 2px solid transparent; }
.before-after > div:last-child { border-left-color: var(--blue); }
.before-after span { color: var(--blue); font-size: 9px; font-weight: 850; letter-spacing: .14em; }
.before-after p { margin: 12px 0 0; color: #d4d9df; font-size: 13px; line-height: 1.8; }
.detail-list { margin: 26px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line-dark); }
.detail-list li { padding: 12px 0 12px 22px; color: var(--slate-3); font-size: 13px; border-bottom: 1px solid rgba(255,255,255,.08); }
.detail-list li::before { content: "↳"; float: left; margin-left: -22px; color: var(--blue); }
.case-media { min-width: 0; display: grid; justify-content: center; }
.case-media figure { width: 100%; max-width: 236px; margin: 0; }
.case-media img { width: 100%; height: auto; aspect-ratio: 472 / 1024; object-fit: cover; border: 4px solid #090c10; border-radius: 22px; box-shadow: 0 28px 70px rgba(0,0,0,.38); }
.case-media figcaption { margin-top: 14px; color: var(--slate-3); font-size: 10px; line-height: 1.5; }
.dual-screens { grid-template-columns: repeat(2, minmax(0, 210px)); gap: 20px; }
.single-screen { width: min(260px, 100%); }
.feedback-proof { width: min(320px, 100%); }
.feedback-proof figure, .analysis-feedback-proof figure { max-width: 320px; }
.feedback-proof img { aspect-ratio: auto; object-fit: contain; background: #090c10; border: 0; border-radius: 10px; }
.analysis-feedback-proof { width: min(350px, 100%); }
.analysis-feedback-proof figure { max-width: 350px; }

/* 기술 선택 */
.model-table { margin-top: 80px; border-top: 2px solid var(--ink); }
.model-row { display: grid; grid-template-columns: 1.05fr 1.1fr 1.7fr .45fr; gap: 18px; align-items: center; padding: 17px 12px; border-bottom: 1px solid var(--line); }
.model-header { color: var(--white); background: var(--ink); font-size: 9px; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.model-row strong { font-size: 13px; }
.model-row span { color: var(--slate); font-size: 12px; }
.model-row em { color: var(--slate-2); font-size: 11px; font-style: normal; font-weight: 850; text-align: right; }
.model-row.selected { color: var(--white); background: var(--blue); }
.model-row.selected span, .model-row.selected em { color: var(--white); }
.parity-strip { margin-top: 22px; padding: 18px 0; display: flex; flex-wrap: wrap; gap: 12px 26px; align-items: center; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.parity-strip span { width: 100%; color: var(--blue); font-size: 9px; font-weight: 850; letter-spacing: .15em; }
.parity-strip strong { font-size: 12px; font-weight: 700; }
.platform-grid { margin-top: 44px; display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.platform-card { min-height: 360px; padding: 34px; background: var(--paper); }
.platform-card:first-child { color: var(--white); background: var(--ink); }
.platform-card > span { color: var(--blue); font-size: 10px; font-weight: 850; letter-spacing: .16em; }
.platform-card h3 { margin: 20px 0 0; font-size: 32px; line-height: 1.08; letter-spacing: -.05em; }
.platform-card p { margin-top: 22px; color: var(--slate); font-size: 14px; }
.platform-card:first-child p, .platform-card:first-child ul { color: var(--slate-3); }
.platform-card ul { margin: 26px 0 0; padding-left: 18px; color: var(--slate); font-size: 13px; }

/* 촬영 성능 */
.recording { position: relative; overflow: hidden; }
.recording::before { content: "REC"; position: absolute; right: -2vw; bottom: -9vw; color: rgba(255,255,255,.12); font-size: clamp(180px, 32vw, 520px); font-weight: 900; line-height: .8; letter-spacing: -.1em; }
.recording-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .72fr 1.28fr; gap: 10vw; align-items: center; }
.recording-visual { display: grid; place-items: center; }
.screenshot-device { width: min(280px, 68vw); margin: 0; overflow: hidden; border: 5px solid #090c10; border-radius: 30px; box-shadow: 24px 30px 0 rgba(27,34,44,.18); transform: translate3d(0, var(--parallax-y, 0), 0); }
.screenshot-device img { width: 100%; aspect-ratio: 472 / 1024; object-fit: cover; }
.recording-copy .eyebrow { color: var(--white); opacity: .8; }
.recording-copy h2 { margin-top: 26px; }
.recording-copy > p { color: rgba(255,255,255,.84); }
.choice-grid { margin-top: 40px; display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid rgba(255,255,255,.45); }
.choice-grid > div { padding: 20px 24px 0 0; }
.choice-grid > div + div { padding-left: 24px; border-left: 1px solid rgba(255,255,255,.35); }
.choice-grid span { display: block; font-size: 9px; font-weight: 850; letter-spacing: .15em; opacity: .72; }
.choice-grid strong { display: block; margin-top: 10px; font-size: 21px; }
.choice-grid small { display: block; margin-top: 7px; opacity: .78; }

/* 결과 편집 */
.result-grid { margin-top: 86px; }
.result-card { display: grid; grid-template-columns: minmax(300px, .8fr) minmax(0, 1.2fr); min-height: 520px; border-top: 1px solid var(--line); }
.result-card:last-child { border-bottom: 1px solid var(--line); }
.result-card:nth-child(even) { grid-template-columns: minmax(0, 1.2fr) minmax(380px, .8fr); }
.result-card:nth-child(even) .result-image { order: 2; }
.result-image { margin: 0; padding: 48px; display: grid; place-items: center; background: var(--ink); }
.result-image img { width: min(236px, 100%); height: auto; aspect-ratio: 472 / 1024; object-fit: cover; border: 4px solid #090c10; border-radius: 22px; box-shadow: 0 26px 62px rgba(0,0,0,.34); }
.result-image-pair { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.result-image-pair figure { margin: 0; }
.result-image-pair img { width: 100%; }
.result-image-pair figcaption { margin-top: 12px; color: var(--slate-3); font-size: 10px; text-align: center; }
.result-copy { padding: 70px 8vw; display: flex; flex-direction: column; justify-content: center; }
.result-copy > span { color: var(--blue); font-size: 9px; font-weight: 850; letter-spacing: .16em; }
.result-copy h3 { margin: 18px 0 0; font-size: clamp(34px, 4vw, 54px); line-height: 1.08; letter-spacing: -.055em; }
.result-copy p { max-width: 650px; margin: 24px 0 0; color: var(--slate); font-size: 15px; line-height: 1.85; }

/* 개인정보와 배포 */
.privacy-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 9vw; }
.privacy .section-heading { display: block; }
.privacy .section-heading .eyebrow { padding: 0; }
.privacy .section-heading h2 { margin-top: 26px; }
.privacy-list { border-top: 1px solid var(--line); }
.privacy-item { display: grid; grid-template-columns: 42px 1fr; gap: 20px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.privacy-item > span { color: var(--blue); font-size: 10px; font-weight: 850; }
.privacy-item strong { font-size: 20px; letter-spacing: -.025em; }
.privacy-item p { margin: 9px 0 0; color: var(--slate); font-size: 13px; line-height: 1.75; }

/* 마무리 */
.closing { position: relative; overflow: hidden; text-align: left; }
.closing::after { content: "TOP"; position: absolute; right: -4vw; bottom: -5vw; color: transparent; font-size: 36vw; font-weight: 900; line-height: .7; letter-spacing: -.1em; -webkit-text-stroke: 1px rgba(255,255,255,.08); }
.closing-inner { position: relative; z-index: 1; }
.closing-brand { width: min(660px, 90%); margin: 0 0 80px; }
.closing h2 { max-width: 980px; margin-top: 26px; }
.closing-inner > p:not(.eyebrow) { max-width: 720px; margin: 30px 0 0; color: var(--slate-3); }
.closing-links { margin-top: 46px; display: flex; flex-wrap: wrap; gap: 10px 30px; }
.closing-links a { min-height: 44px; display: inline-flex; align-items: center; border-bottom: 1px solid rgba(255,255,255,.35); font-size: 12px; }
.closing-links a:hover { color: var(--blue); border-color: var(--blue); }
.site-footer { padding: 24px 0; color: var(--slate-3); background: #11161c; font-size: 10px; letter-spacing: .04em; }
.site-footer .shell { display: flex; justify-content: space-between; gap: 20px; }

/* 스크롤 모션 */
.reveal { opacity: 0; transform: translateY(26px); clip-path: inset(0 0 12% 0); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1), clip-path .7s ease; transition-delay: var(--delay, 0ms); }
.reveal.visible { opacity: 1; transform: translateY(0); clip-path: inset(0); }

@media (max-width: 1080px) {
  :root { --shell: min(880px, calc(100vw - 48px)); }
  .hero-grid { grid-template-columns: 1fr; padding-top: 130px; }
  .hero-copy { padding-bottom: 0; }
  .hero-visual { min-height: 650px; justify-items: center; }
  .hero-device { margin-right: 0; }
  .hero-meta { right: max(0px, 7vw); }
  .promo-grid, .split-layout, .recording-grid, .privacy-grid { grid-template-columns: 1fr; gap: 74px; }
  .video-stage { justify-items: center; }
  .section-heading { grid-template-columns: 130px minmax(0, 1fr); gap: 34px; }
  .sticky-copy { position: static; }
  .flow-diagram { grid-template-columns: 1fr 1fr; gap: 34px 0; }
  .case-card { grid-template-columns: 1fr; }
  .case-card:nth-child(odd):not(.text-only) .case-media { order: initial; }
  .case-media { margin-inline: auto; }
  .result-card, .result-card:nth-child(even) { grid-template-columns: minmax(280px, .8fr) minmax(0, 1.2fr); }
  .result-card:nth-child(even) .result-image { order: initial; }
  .recording-copy { order: -1; }
}

@media (max-width: 760px) {
  :root { --shell: calc(100vw - 28px); }
  .header-inner { height: 66px; }
  .brand-copy small { display: none; }
  .menu-button { width: 42px; height: 42px; padding: 0; display: grid; place-content: center; gap: 5px; border: 1px solid var(--line-dark); background: transparent; }
  .menu-button span:not(.sr-only) { display: block; width: 18px; height: 1px; background: currentColor; }
  .site-nav { display: none; position: absolute; top: 65px; right: 14px; left: 14px; padding: 18px; flex-direction: column; align-items: stretch; gap: 0; color: var(--slate-3); background: rgba(27,34,44,.98); border: 1px solid var(--line-dark); }
  .site-nav.open { display: flex; }
  .site-nav a { min-height: 44px; display: flex; align-items: center; border-bottom: 1px solid var(--line-dark); }
  .site-nav a:last-child { border-bottom: 0; }
  .hero-grid { min-height: auto; padding-top: 112px; padding-bottom: 54px; }
  .hero h1 { margin-top: 26px; font-size: clamp(45px, 13.5vw, 66px); line-height: 1; }
  .hero h1 br, .section-heading h2 br, .sticky-copy h2 br, .case-copy h3 br, .recording-copy h2 br, .closing h2 br { display: none; }
  .hero-description { margin-top: 24px; font-size: 15px; }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 10px; }
  .hero-actions .button, .hero-actions .text-link { width: 100%; justify-content: center; }
  .hero-visual { min-height: 510px; }
  .hero-device { width: min(270px, 72vw); }
  .motion-word { right: -34%; font-size: 180px; }
  .hero-meta { right: 0; bottom: 0; width: min(310px, 94%); }
  .slogan-ticker > div { animation-duration: 22s; }
  .overview, .screen-journey, .problem, .solution, .iterations, .technology, .recording, .result, .privacy, .closing, .promo { padding: 94px 0; }
  .section-heading { display: block; }
  .section-heading .eyebrow { padding: 0; }
  .section-heading h2, .sticky-copy h2, .recording-copy h2, .closing h2 { margin-top: 24px; font-size: clamp(36px, 10.5vw, 50px); line-height: 1.08; }
  .section-heading > p:last-child, .sticky-copy > p:last-child, .recording-copy > p { margin-top: 22px; font-size: 14px; }
  .promo-grid { gap: 54px; }
  .promo-specs { gap: 12px; }
  .promo-video-shell { width: min(330px, 84vw); box-shadow: 16px 20px 0 rgba(10,140,255,.16); }
  .overview-cards { margin-top: 54px; grid-template-columns: 1fr; }
  .metric-card, .metric-card + .metric-card { min-height: 210px; padding: 24px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .metric-card:last-child { border-bottom: 0; }
  .project-facts div { grid-template-columns: 1fr; gap: 6px; padding: 18px; }
  .phone-gallery { width: 100vw; margin-left: calc((100vw - var(--shell)) / -2); padding: 0 14px 34px; display: flex; justify-content: start; gap: 18px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; }
  .phone-gallery::-webkit-scrollbar { display: none; }
  .screen-card, .screen-card:nth-child(2), .screen-card:nth-child(3) { flex: 0 0 min(72vw, 250px); transform: none; scroll-snap-align: center; }
  .screen-card::before { display: none; }
  .problem-item { grid-template-columns: 38px 1fr; padding: 28px 0 40px; }
  .problem-item strong { font-size: 22px; }
  .flow-diagram { margin-top: 52px; grid-template-columns: 1fr; gap: 0; }
  .flow-node, .flow-node:not(:first-child) { min-height: 0; padding: 22px 0 34px; border-right: 0; border-top-width: 1px; }
  .flow-node strong { margin-top: 34px; }
  .comparison-table > div { grid-template-columns: 1fr; gap: 6px; padding: 18px 0; }
  .comparison-head { display: none !important; }
  .case-stack { margin-top: 48px; }
  .case-card { padding: 58px 0; gap: 42px; }
  .case-copy h3 { font-size: clamp(31px, 9vw, 42px); }
  .before-after { grid-template-columns: 1fr; gap: 18px; }
  .dual-screens { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .case-media figure { max-width: 210px; }
  .dual-screens figure { max-width: 100%; }
  .feedback-proof, .analysis-feedback-proof { width: min(310px, 100%); }
  .model-table { margin-top: 52px; display: grid; gap: 10px; border-top: 0; }
  .model-header { display: none; }
  .model-row, .model-row.selected { grid-template-columns: 1fr auto; gap: 8px 12px; padding: 18px; border: 1px solid var(--line); background: var(--paper); }
  .model-row.selected { color: var(--white); background: var(--blue); }
  .model-row span { grid-column: 1 / -1; }
  .model-row em { grid-column: 2; grid-row: 1; }
  .platform-grid { grid-template-columns: 1fr; }
  .platform-card { min-height: 0; padding: 28px 24px; }
  .parity-strip { display: grid; gap: 8px; }
  .choice-grid { grid-template-columns: 1fr; }
  .choice-grid > div, .choice-grid > div + div { padding: 18px 0; border-left: 0; border-bottom: 1px solid rgba(255,255,255,.35); }
  .result-grid { margin-top: 54px; }
  .result-card, .result-card:nth-child(even) { grid-template-columns: 1fr; min-height: 0; }
  .result-image { padding: 34px 24px; }
  .result-copy { padding: 44px 0 58px; }
  .result-copy h3 { font-size: clamp(31px, 9vw, 42px); }
  .privacy-grid { gap: 52px; }
  .privacy-item { grid-template-columns: 32px 1fr; }
  .closing-brand { margin-bottom: 54px; }
  .closing-links { align-items: stretch; flex-direction: column; }
  .closing-links a { justify-content: space-between; }
  .site-footer .shell { flex-direction: column; }
}

@media (max-width: 420px) {
  .hero-meta { width: 100%; }
  .hero-meta div { grid-template-columns: 64px 1fr; }
  .dual-screens { grid-template-columns: 1fr; }
  .dual-screens figure { width: min(220px, 100%); margin-inline: auto; }
  .result-image-pair { gap: 8px; padding-inline: 12px; }
  .result-image-pair img { border-width: 3px; border-radius: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; clip-path: none; transform: none; }
  [data-parallax] { transform: none !important; }
}