/* ============================================================
   FileManager — marketing site
   Windows 2000 marketing motifs (sky, clouds, translucent flag
   blocks) set in a light, editorial layout: light-weight display
   type, greyscale surfaces, hairline rules and arrow-led captions.
   Type: Segoe UI Variable (ships with Windows), no web fonts.
   ============================================================ */

:root {
  --orange: #ef451e;
  --yellow: #f3ad00;
  --green: #36a84b;
  --blue: #216bb7;
  --deep-blue: #0f4f96;

  --sky-top: #2f6aa9;
  --sky-mid: #6e9fd2;
  --sky-low: #b4cfe9;

  --ink: #25292b;
  --text: #3b3e3f;
  --muted: #676e72;
  --grey-50: #f7f9fa;
  --grey-100: #edf1f4;
  --grey-200: #e3e8ed;
  --rule: rgba(59, 62, 63, 0.16);
  --button: #3b3e3f;

  --font-display: "Segoe UI Variable Display", "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-text: "Segoe UI Variable Text", "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--grey-100);
  color: var(--text);
  font-family: var(--font-text);
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.shell { width: min(1440px, calc(100% - 80px)); margin: 0 auto; }

/* ---------- Shared type ---------- */

.caption {
  margin: 0;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--ink);
}
.caption span { margin-right: 6px; }
.heading-large {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(48px, 5.6vw, 84px);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -.045em;
  color: var(--ink);
}
.caps-large {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(46px, 6.2vw, 100px);
  font-weight: 300;
  line-height: .98;
  letter-spacing: -.045em;
  text-transform: uppercase;
  color: var(--ink);
}

/* ---------- Buttons & links ---------- */

.button {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 28px;
  min-height: 54px;
  padding: 0 24px;
  background: var(--button);
  color: #fff;
  font-size: 16px;
  font-weight: 400;
  white-space: nowrap;
}
.button::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .45s var(--ease);
}
.button:hover::before { transform: scaleX(1); }
.button .arrow { font-size: 18px; line-height: 1; transition: transform .35s var(--ease); }
.button:hover .arrow.down { transform: translateY(3px); }
.text-link { display: inline-flex; gap: 10px; padding: 10px 0; font-size: 16px; font-weight: 400; color: var(--ink); border-bottom: 1px solid currentColor; }
.text-link span { transition: transform .35s var(--ease); }
.text-link:hover span { transform: translateX(5px); }

/* ---------- Flag mark ---------- */

.app-mark { width: 28px; height: 28px; display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 2px; transform: skewY(-5deg); flex: 0 0 auto; }
.app-mark i:nth-child(1) { background: #ef451e; }
.app-mark i:nth-child(2) { background: #36a84b; }
.app-mark i:nth-child(3) { background: #216bb7; }
.app-mark i:nth-child(4) { background: #f3ad00; }
.wordmark { display: inline-flex; align-items: center; gap: 12px; font-family: var(--font-display); font-size: 22px; font-weight: 600; letter-spacing: -.03em; }

/* ---------- Sky: clouds and translucent flag glass ---------- */

.cloud { position: absolute; display: block; border-radius: 50%; background: rgba(255, 255, 255, .5); filter: blur(34px); }
.glass {
  position: absolute;
  display: block;
  border-left: 1px solid rgba(255, 255, 255, .55);
  border-right: 1px solid rgba(255, 255, 255, .18);
  backdrop-filter: blur(3px);
}
.glass-orange { background: linear-gradient(180deg, rgba(239, 69, 30, .62), rgba(239, 69, 30, .06)); }
.glass-yellow { background: linear-gradient(180deg, rgba(243, 173, 0, .55), rgba(243, 173, 0, .04)); }
.glass-green { background: linear-gradient(180deg, rgba(54, 168, 75, .55), rgba(54, 168, 75, .05)); }
.glass-blue { background: linear-gradient(180deg, rgba(20, 70, 160, .55), rgba(20, 70, 160, .05)); box-shadow: inset 0 0 0 22px rgba(120, 190, 230, .22); }
.glass-white { background: linear-gradient(180deg, rgba(255, 255, 255, .45), rgba(255, 255, 255, 0)); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--sky-top) 0%, var(--sky-mid) 24%, var(--sky-low) 50%, #dce7f1 74%, var(--grey-100) 100%);
  color: var(--ink);
}
.sky { position: absolute; inset: 0; pointer-events: none; mask-image: linear-gradient(to bottom, black 35%, transparent 88%); }
.cloud-one { width: 620px; height: 150px; top: 14%; right: 6%; transform: rotate(-8deg); }
.cloud-two { width: 520px; height: 130px; top: 34%; left: 22%; transform: rotate(6deg); opacity: .8; }
.cloud-three { width: 420px; height: 110px; top: 4%; left: -6%; opacity: .55; }
.hero .glass-orange { width: 13vw; height: 36%; left: 17%; top: -6%; }
.hero .glass-yellow { width: 6vw; height: 28%; left: 28%; top: 4%; }
.hero .glass-blue { width: 16vw; height: 70%; right: 26%; top: -8%; }
.hero .glass-green { width: 12vw; height: 56%; right: 6%; top: 10%; }
.hero .glass-white { width: 9vw; height: 64%; right: 44%; top: 2%; }

.nav { height: 92px; display: flex; align-items: center; justify-content: space-between; position: relative; z-index: 5; color: #fff; }
.nav-links { display: flex; gap: 36px; margin: 0 auto; font-size: 15px; font-weight: 400; }
.nav-links a { transition: opacity .2s ease; }
.nav-links a:hover { opacity: .7; }
.nav-download { min-height: 48px; }

.hero-content { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); align-items: end; gap: 64px; padding: 120px 0 88px; }
.hero-copy { position: relative; z-index: 2; }
.lockup { display: inline-flex; align-items: center; gap: 14px; margin: 0 0 40px; padding-left: 0; font-size: 13px; font-weight: 400; line-height: 1.3; color: var(--ink); }
.lockup .app-mark { width: 30px; height: 30px; }
.lockup b { display: block; font-family: var(--font-display); font-size: 17px; font-weight: 600; letter-spacing: -.02em; }
.lockup > span:last-child { padding-left: 14px; border-left: 1px solid rgba(37, 41, 43, .35); font-style: italic; }
h1 { margin: 0; font-family: var(--font-display); font-size: clamp(58px, 6.4vw, 108px); font-weight: 300; line-height: .98; letter-spacing: -.05em; color: var(--ink); }
h1 em { font-style: normal; color: var(--deep-blue); white-space: nowrap; }
.lede { max-width: 520px; margin: 32px 0 0; font-size: clamp(18px, 1.35vw, 21px); line-height: 1.5; color: var(--text); }
.hero-actions { display: flex; align-items: center; gap: 32px; margin-top: 40px; }

.hero-strip { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 4fr) 60px minmax(0, 4fr) minmax(0, 3fr); align-items: start; gap: 24px; padding: 28px 0 64px; border-top: 1px solid var(--rule); font-size: 16px; line-height: 1.45; }
.hero-strip > p { margin: 0; max-width: 360px; }
.strip-arrow { font-size: 22px; line-height: 1; text-align: center; }
.strip-proof { justify-self: end; text-align: right; }
.strip-proof p { margin: 0; }
.strip-proof a { color: var(--ink); border-bottom: 1px solid currentColor; }
.proof-score { display: flex; align-items: center; justify-content: flex-end; gap: 12px; font-size: 20px; font-weight: 400; color: var(--ink); }
.flag-row { display: inline-flex; gap: 4px; }
.flag-row i { width: 11px; height: 11px; transform: skewY(-5deg); }
.flag-row i:nth-child(1) { background: var(--orange); }
.flag-row i:nth-child(2) { background: var(--green); }
.flag-row i:nth-child(3) { background: var(--blue); }
.flag-row i:nth-child(4) { background: var(--yellow); }

/* ---------- Product window (FileManager UI mockup) ---------- */

.product-stage { position: relative; width: 112%; filter: drop-shadow(0 34px 42px rgba(0,19,55,.28)); }
.window-shadow { position: absolute; width: 100%; height: 100%; left: 24px; top: 25px; background: rgba(7,37,76,.18); }
.app-window { position: relative; z-index: 1; background: #e7e7e7; color: #101010; border: 1px solid #16365b; box-shadow: inset 0 0 0 1px white; font-family: Arial, sans-serif; font-size: 12px; }
.title-bar { height: 34px; display: flex; align-items: center; gap: 9px; padding: 0 10px; background: linear-gradient(90deg, #f6fbf5, #e5f2f3); font-size: 12px; }
.title-bar .app-mark { width: 17px; height: 17px; }
.window-controls { margin-left: auto; display: flex; height: 100%; align-items: center; }
.window-controls i { width: 38px; height: 100%; display: grid; place-items: center; font-style: normal; }
.menu-bar { display: flex; gap: 17px; padding: 6px 10px; border-top: 1px solid #c2c2c2; border-bottom: 1px solid #b7b7b7; background: #f1f1f1; }
.tool-bar { height: 35px; display: flex; align-items: center; gap: 4px; padding: 3px 7px; border-bottom: 1px solid #aaa; }
.tool-bar button { width: 27px; height: 25px; border: 1px solid transparent; background: transparent; color: #135c9b; font-weight: 800; }
.tool-bar button:nth-of-type(4), .tool-bar button:nth-of-type(8) { color: #f0a000; }
.tool-bar i { height: 25px; width: 1px; background: #a7a7a7; margin: 0 4px; }
.panes { display: grid; grid-template-columns: 1fr 1fr; gap: 3px; background: #8d8d8d; }
.file-pane { min-width: 0; background: white; }
.drive-row { height: 29px; display: flex; align-items: center; gap: 7px; padding: 0 7px; background: #8fb0d1; border-bottom: 1px solid #778b9d; }
.drive-chip { font-weight: 800; }
.path { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.free-space { margin-left: auto; }
.file-head, .file-row { display: grid; grid-template-columns: minmax(120px, 1.5fr) 66px 92px 54px; }
.file-head { height: 28px; align-items: center; background: #e8ebed; border-bottom: 1px solid #b2b2b2; font-weight: 700; }
.file-head span { padding: 0 6px; border-right: 1px solid #bbb; }
.file-body { min-height: 265px; padding-top: 2px; background: white; }
.file-row { height: 29px; align-items: center; }
.file-row span { padding: 0 6px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.file-row.selected { background: #dce7f1; outline: 1px solid #6f7a83; outline-offset: -1px; }
.file-name { display: flex; align-items: center; gap: 7px; }
.folder { width: 14px; height: 10px; display: inline-block; background: linear-gradient(#ffd45a, #f4a900); position: relative; flex: 0 0 auto; }
.folder::before { content: ""; position: absolute; width: 7px; height: 3px; left: 1px; top: -3px; background: #e8a727; }
.document { width: 10px; height: 13px; border: 1px solid #6587a5; display: inline-block; background: #fff; flex: 0 0 auto; }
.pane-status { height: 29px; display: flex; align-items: center; padding: 0 8px; border-top: 1px solid #bababa; background: #f1f1f1; color: #334c64; }
.command-line { height: 30px; display: flex; align-items: center; padding: 0 8px; background: white; border-top: 1px solid #a6a6a6; }
.caret { display: inline-block; width: 7px; height: 14px; margin-left: 3px; background: #111; animation: blink 1.1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
.function-bar { height: 29px; display: grid; grid-template-columns: repeat(8, 1fr); align-items: center; gap: 2px; padding: 0 7px; background: #e8e8e8; white-space: nowrap; overflow: hidden; }
.function-bar span { font-size: 10px; }
.function-bar b { padding: 2px; background: #5e7182; color: white; font-size: 8px; }

/* ---------- Works-with band ---------- */

.works { padding: 96px 0 24px; background: var(--grey-100); }
.marquee { display: flex; overflow: hidden; margin-top: 40px; mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent); }
.marquee-track { flex: 0 0 auto; display: flex; align-items: center; margin: 0; padding: 0; list-style: none; animation: marquee 48s linear infinite; }
.marquee-track li { display: flex; align-items: center; gap: 56px; padding-right: 56px; font-family: var(--font-display); font-size: clamp(28px, 3vw, 44px); font-weight: 300; letter-spacing: -.03em; color: var(--muted); white-space: nowrap; }
.marquee-track li::after { content: ""; width: 10px; height: 10px; background: var(--rule); transform: skewY(-5deg); }
.marquee-track li:nth-child(4n+1)::after { background: var(--orange); }
.marquee-track li:nth-child(4n+2)::after { background: var(--green); }
.marquee-track li:nth-child(4n+3)::after { background: var(--blue); }
.marquee-track li:nth-child(4n+4)::after { background: var(--yellow); }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-100%); } }

/* ---------- Statement ---------- */

.intro { padding: 128px 0 176px; background: var(--grey-100); }
.intro-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: 40px; }
.intro-grid .caption { padding-top: 16px; }
.statement { margin: 0; font-family: var(--font-display); font-size: clamp(30px, 3.5vw, 56px); font-weight: 300; line-height: 1.16; letter-spacing: -.03em; color: var(--text); }
.statement-arrow { color: var(--ink); }
.hl { padding: 0 .06em; color: var(--ink); font-weight: 400; background: linear-gradient(transparent 64%, var(--hl) 64%, var(--hl) 92%, transparent 92%); }
.hl-blue { --hl: rgba(33, 107, 183, .28); }
.hl-orange { --hl: rgba(239, 69, 30, .26); }
.hl-green { --hl: rgba(54, 168, 75, .28); }

/* ---------- Inside: numbered list ---------- */

.inside { padding: 160px 0 176px; background: #fff; }
.section-head { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 40px; margin-bottom: 96px; }
.inside-row {
  display: grid;
  grid-template-columns: 72px 48px minmax(0, 5fr) minmax(0, 5fr);
  align-items: baseline;
  gap: 24px;
  padding: 44px 0;
  border-top: 1px solid var(--rule);
}
.inside-row:last-child { border-bottom: 1px solid var(--rule); }
.row-number, .inside-row h3 { font-family: var(--font-display); font-size: clamp(24px, 2vw, 30px); font-weight: 300; letter-spacing: -.04em; color: var(--ink); }
.row-number { position: relative; }
.row-number::before { content: ""; position: absolute; left: -22px; top: .45em; width: 10px; height: 10px; background: var(--row); transform: skewY(-5deg) scale(0); transition: transform .35s var(--ease); }
.row-arrow { font-size: 22px; color: var(--ink); transition: transform .35s var(--ease); }
.inside-row h3 { margin: 0; text-transform: uppercase; }
.inside-row p { max-width: 520px; margin: 0; font-size: 18px; line-height: 1.55; color: var(--muted); }
.inside-row:hover .row-number::before { transform: skewY(-5deg) scale(1); }
.inside-row:hover .row-arrow { transform: translateX(10px); }

/* ---------- Native: Windows 2000 poster + specs ---------- */

.native { padding: 160px 0; background: var(--grey-100); }
.native-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(48px, 7vw, 120px); align-items: center; }
.feature-art { position: relative; aspect-ratio: 4 / 5; overflow: hidden; background: linear-gradient(165deg, #6f9fd2, #2a64a3 55%, #0f4589); color: #fff; }
.art-cloud { width: 70%; height: 22%; left: 20%; top: 38%; background: rgba(255, 255, 255, .45); }
.art-square { position: absolute; backdrop-filter: blur(5px); }
.art-orange { width: 57%; height: 38%; left: -6%; top: 9%; background: rgba(239,71,20,.82); }
.art-green { width: 52%; height: 40%; right: 2%; bottom: 7%; background: rgba(54,168,75,.72); }
.art-blue { width: 50%; height: 36%; right: 3%; top: 16%; border: 26px solid rgba(70,164,219,.43); background: rgba(17,60,146,.42); }
.speed-lines { position: absolute; z-index: 2; width: 125%; right: -30%; top: 40%; transform: rotate(-18deg); display: grid; gap: 14px; }
.speed-lines i { display: block; height: 4px; background: linear-gradient(90deg, transparent, rgba(255,255,255,.9), transparent); }
.speed-lines i:nth-child(2) { width: 82%; margin-left: 17%; }
.speed-lines i:nth-child(3) { width: 65%; margin-left: 28%; }
.speed-lines i:nth-child(4) { width: 76%; margin-left: 8%; }
.speed-lines i:nth-child(5) { width: 42%; margin-left: 43%; }
.feature-art > span { position: absolute; z-index: 3; left: 8%; bottom: 6%; font-family: var(--font-display); font-size: clamp(64px, 7vw, 124px); font-weight: 700; line-height: .8; letter-spacing: -.07em; }
.native-details .caption { margin-bottom: 32px; }
.native-details h2 span { color: var(--orange); }
.native-lede { max-width: 580px; margin: 36px 0 0; font-size: 20px; line-height: 1.55; }
.spec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; margin-top: 64px; }
.spec-grid div { display: flex; flex-direction: column; padding: 28px 0 36px; border-top: 1px solid var(--rule); }
.spec-grid strong { font-family: var(--font-display); font-size: clamp(40px, 3.6vw, 56px); font-weight: 300; line-height: 1; letter-spacing: -.05em; color: var(--blue); }
.spec-grid span { margin-top: 12px; font-size: 14px; line-height: 1.4; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); font-weight: 400; }

/* ---------- Heritage ---------- */

.heritage { position: relative; overflow: hidden; padding: 176px 0 160px; background: #fff; }
.heritage-cloud { width: 900px; height: 420px; right: -240px; top: 40px; background: radial-gradient(ellipse at center, rgba(110, 159, 210, .45), rgba(110, 159, 210, 0) 70%); filter: blur(20px); }
.heritage .shell { position: relative; }
.heritage-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: 40px; }
.heritage-grid .caption { padding-top: 18px; }
.heritage-quote { margin: 0; font-family: var(--font-display); font-size: clamp(40px, 4.8vw, 76px); font-weight: 300; line-height: 1.04; letter-spacing: -.045em; color: var(--ink); }
.heritage-quote em { font-style: normal; color: var(--deep-blue); }
.heritage-text { max-width: 640px; margin: 40px 0 0; font-size: 20px; line-height: 1.55; }
.timeline { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 0 24px; margin: 120px 0 0; padding: 0; list-style: none; }
.timeline li { position: relative; display: flex; flex-direction: column; gap: 12px; padding-top: 32px; border-top: 1px solid var(--rule); }
.timeline li::before { content: ""; position: absolute; left: 0; top: -6px; width: 11px; height: 11px; background: var(--dot); transform: skewY(-5deg); }
.timeline strong { font-family: var(--font-display); font-size: clamp(30px, 2.6vw, 40px); font-weight: 300; letter-spacing: -.04em; color: var(--ink); }
.timeline span { font-size: 15px; line-height: 1.45; color: var(--muted); }

/* ---------- FAQ ---------- */

.faq { padding: 40px 0 176px; background: #fff; }
.faq-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: 40px; }
.faq details { border-top: 1px solid var(--rule); }
.faq details:last-child { border-bottom: 1px solid var(--rule); }
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 36px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(24px, 2.8vw, 42px);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -.03em;
  color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 6px; }
.faq-arrow { flex: 0 0 auto; font-size: 24px; transition: transform .35s var(--ease); }
.faq details[open] .faq-arrow { transform: rotate(180deg); }
.faq details p { max-width: 760px; margin: -8px 0 0; padding-bottom: 40px; font-size: 19px; line-height: 1.6; color: var(--muted); }

/* ---------- Download CTA ---------- */

.download { position: relative; overflow: hidden; padding: 240px 0 56px; background: linear-gradient(180deg, var(--sky-mid) 0%, var(--sky-low) 30%, #dce7f1 62%, var(--grey-100) 100%); }
.download-sky { position: absolute; inset: 0; pointer-events: none; mask-image: linear-gradient(to bottom, black 10%, transparent 48%); }
.download-cloud { width: 700px; height: 170px; right: 12%; top: 8%; transform: rotate(-5deg); }
.download .glass-orange { width: 11vw; height: 52%; right: 36%; top: -4%; }
.download .glass-blue { width: 14vw; height: 60%; right: 18%; top: -8%; }
.download .glass-green { width: 10vw; height: 48%; right: 4%; top: 0; }
.download .glass-yellow { width: 6vw; height: 34%; right: 31%; top: 6%; }
.download-grid { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); align-items: end; gap: 48px; }
.caps-large span { color: var(--blue); }
.download-action { display: flex; flex-direction: column; align-items: flex-start; gap: 28px; }
.download-action p { margin: 0; font-size: 19px; line-height: 1.45; color: var(--ink); }
.download-strip { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 5fr) minmax(0, 4fr); gap: 40px; margin-top: 160px; padding-top: 24px; border-top: 1px solid rgba(37, 41, 43, .22); font-size: 15px; line-height: 1.5; color: var(--ink); }
.download-strip p { margin: 0; }
.requirements { justify-self: end; text-align: right; }

/* ---------- Footer ---------- */

footer { padding: 80px 0 36px; background: var(--grey-200); color: var(--ink); }
.footer-inner { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 3fr) minmax(0, 3fr); gap: 40px; padding-bottom: 72px; }
.footer-brand p { max-width: 320px; margin: 20px 0 0; font-size: 16px; line-height: 1.5; color: var(--muted); }
.footer-links { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; font-size: 16px; font-weight: 400; }
.footer-links .caption { margin-bottom: 8px; color: var(--muted); }
.footer-links a, .footer-bottom a { transition: opacity .2s ease; }
.footer-links a:hover, .footer-bottom a:hover { opacity: .6; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding-top: 24px; border-top: 1px solid var(--rule); font-size: 14px; color: var(--muted); }
.footer-bottom p { margin: 0; }

/* ---------- Motion (progressive) ---------- */

@media (prefers-reduced-motion: no-preference) {
  .hero .glass { animation: drift 14s ease-in-out infinite alternate; }
  .hero .glass-yellow, .hero .glass-green { animation-duration: 18s; animation-direction: alternate-reverse; }
  @keyframes drift { to { transform: translateY(24px); } }

  @supports (animation-timeline: view()) {
    .reveal { animation: rise linear both; animation-timeline: view(); animation-range: entry 0% entry 60%; }
    @keyframes rise { from { opacity: 0; transform: translateY(48px); } }
  }
}

/* ---------- Responsive ---------- */

@media (max-width: 1180px) {
  .shell { width: min(100% - 56px, 1100px); }
  .nav-links { gap: 24px; }
  .hero-content { grid-template-columns: minmax(0, 1fr); padding-top: 72px; }
  .hero-copy { max-width: 760px; }
  .product-stage { width: 100%; margin-top: 16px; }
  .hero-strip { grid-template-columns: minmax(0, 1fr) 48px minmax(0, 1fr); }
  .strip-proof { grid-column: 1 / -1; justify-self: start; text-align: left; }
  .proof-score { justify-content: flex-start; }
  .inside-row { grid-template-columns: 64px 40px minmax(0, 1fr); }
  .inside-row p { grid-column: 3; }
  .native-grid { grid-template-columns: minmax(0, 1fr); }
  .feature-art { aspect-ratio: 16 / 10; }
  .timeline { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px 24px; }
  .download-grid { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 960px) {
  .nav-links { display: none; }
}

@media (max-width: 820px) {
  .shell { width: calc(100% - 32px); }
  .nav { height: 76px; }
  .nav-download { min-height: 42px; padding: 0 16px; font-size: 14px; }
  .hero-content { gap: 28px; padding: 56px 0 64px; }
  h1 { font-size: clamp(52px, 15vw, 88px); }
  .lede { font-size: 18px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 12px; }
  .product-stage { width: 135%; transform: translateX(-4%); }
  .app-window { font-size: 9px; }
  .file-body { min-height: 190px; }
  .file-head, .file-row { grid-template-columns: minmax(95px, 1.5fr) 46px 70px 38px; }
  .file-row { height: 23px; }
  .function-bar span:nth-child(n+6) { display: none; }
  .function-bar { grid-template-columns: repeat(5, 1fr); }
  .hero .glass-white { display: none; }
  .hero .glass-orange { width: 16vw; height: 110px; left: auto; right: 34%; top: -10px; }
  .hero .glass-yellow { width: 8vw; height: 150px; left: auto; right: 25%; top: 20px; }
  .hero .glass-blue { width: 22vw; height: 200px; right: -4%; top: -20px; }
  .hero .glass-green { width: 14vw; height: 160px; right: 12%; top: 40px; }
  .hero-strip { grid-template-columns: minmax(0, 1fr); gap: 12px; padding-bottom: 48px; }
  .strip-arrow { text-align: left; transform: rotate(90deg); width: 22px; }
  .strip-proof { grid-column: auto; margin-top: 12px; }
  .works { padding-top: 72px; }
  .intro { padding: 80px 0 112px; }
  .intro-grid, .heritage-grid, .faq-grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .intro-grid .caption, .heritage-grid .caption { padding-top: 0; }
  .inside, .native { padding: 112px 0; }
  .section-head { grid-template-columns: minmax(0, 1fr); gap: 24px; margin-bottom: 56px; }
  .section-head .caption { grid-row: 1; }
  .inside-row { grid-template-columns: 44px minmax(0, 1fr); gap: 12px 16px; padding: 32px 0; }
  .row-arrow { display: none; }
  .inside-row h3, .inside-row p { grid-column: 2; }
  .row-number::before { display: none; }
  .feature-art { aspect-ratio: 4 / 5; }
  .native-lede { font-size: 18px; }
  .heritage { padding: 112px 0; }
  .heritage-text { font-size: 18px; }
  .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 80px; }
  .faq { padding: 24px 0 112px; }
  .faq summary { padding: 28px 0; }
  .faq details p { font-size: 17px; }
  .download { padding: 120px 0 40px; }
  .download .glass-orange { width: 22vw; }
  .download .glass-blue { width: 26vw; }
  .download .glass-green { width: 20vw; }
  .download .glass-yellow { width: 12vw; }
  .download-strip { grid-template-columns: minmax(0, 1fr); gap: 12px; margin-top: 96px; }
  .requirements { justify-self: start; text-align: left; }
  footer { padding-top: 64px; }
  .footer-inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); padding-bottom: 48px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 520px) {
  .wordmark { font-size: 19px; }
  .wordmark .app-mark { width: 23px; height: 23px; }
  .lockup { margin-bottom: 28px; }
  .product-stage { width: 178%; transform: translateX(-8%); }
  .caps-large { font-size: 44px; }
  .spec-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .marquee-track { animation: none; }
  .marquee { overflow-x: auto; }
}