:root {
  --blue: #00a9e8;
  --blue-2: #37c6f4;
  --navy: #071827;
  --navy-2: #102b42;
  --ink: #111820;
  --muted: #647482;
  --line: #d9e6ed;
  --pale: #eef8fd;
  --green: #31ba7a;
  --orange: #f2742d;
  --yellow: #ffc83d;
  --content: min(1180px, calc(100vw - 96px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}
button, a { font: inherit; }
a { color: inherit; text-decoration: none; }

.progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: 100%;
  height: 3px;
  background: rgba(0,0,0,.08);
}
.progress span { display: block; width: 0; height: 100%; background: var(--blue); }

.topbar {
  position: fixed;
  top: 3px;
  left: 0;
  z-index: 90;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  height: 68px;
  padding: 0 42px;
  color: var(--ink);
  background: rgba(255,255,255,.88);
  border-bottom: 1px solid rgba(17,24,32,.08);
  backdrop-filter: blur(18px);
  transition: color .3s, background .3s;
}
.brand { font-size: 20px; font-weight: 800; }
.nav { display: flex; gap: 30px; font-size: 13px; font-weight: 700; }
.nav a { position: relative; padding: 25px 0; color: var(--muted); }
.nav a::after {
  position: absolute;
  bottom: 17px;
  left: 0;
  width: 100%;
  height: 2px;
  content: "";
  background: var(--blue);
  transform: scaleX(0);
  transition: transform .25s;
}
.nav a:hover, .nav a.active { color: var(--ink); }
.nav a.active::after { transform: scaleX(1); }
.mode-button {
  justify-self: end;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 9px 13px;
  color: var(--ink);
  background: transparent;
  border: 1px solid rgba(17,24,32,.18);
  border-radius: 6px;
  cursor: pointer;
}
.mode-button:hover { border-color: var(--blue); }
.mode-icon { color: var(--blue); font-size: 17px; }

.chapter {
  position: relative;
  min-height: 100vh;
  padding: 126px max(48px, calc((100vw - 1180px) / 2)) 90px;
  overflow: hidden;
}
.chapter.dark { color: #fff; background: var(--navy); }
.section-index {
  position: absolute;
  top: 110px;
  right: max(48px, calc((100vw - 1180px) / 2));
  color: rgba(17,24,32,.08);
  font-size: 112px;
  font-weight: 800;
  line-height: 1;
}
.dark .section-index { color: rgba(255,255,255,.07); }
.section-head { position: relative; z-index: 2; max-width: 900px; margin-bottom: 54px; }
.eyebrow {
  margin: 0 0 16px;
  color: rgba(255,255,255,.58);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1.8px;
}
.eyebrow.blue { color: var(--blue); }
h1, h2, h3, p { margin-top: 0; }
h2 {
  margin-bottom: 0;
  font-size: clamp(36px, 4vw, 60px);
  line-height: 1.12;
  letter-spacing: 0;
}
.lead { max-width: 740px; margin-top: 18px; color: var(--muted); font-size: 18px; line-height: 1.7; }

.hero {
  display: grid;
  grid-template-columns: minmax(470px, .9fr) 1.1fr;
  align-items: center;
  padding-top: 100px;
  background:
    linear-gradient(100deg, rgba(4,20,32,.98) 0%, rgba(7,24,39,.93) 48%, rgba(7,24,39,.4) 100%),
    url("assets/hero-bg.jpg") center/cover;
}
.hero::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(180deg, transparent 60%, rgba(0,169,232,.12));
  pointer-events: none;
}
.hero-copy, .hero-product { position: relative; z-index: 2; }
.hero h1 {
  margin: 0;
  font-size: clamp(82px, 9vw, 148px);
  line-height: .84;
  letter-spacing: 0;
}
.hero-subtitle { margin: 32px 0 22px; font-size: 26px; font-weight: 700; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-tags span {
  padding: 8px 11px;
  color: #cbeeff;
  background: rgba(0,169,232,.12);
  border: 1px solid rgba(0,169,232,.34);
  border-radius: 4px;
  font-size: 13px;
}
.hero-actions { display: flex; align-items: center; gap: 26px; margin-top: 40px; }
.primary-button {
  padding: 13px 22px;
  color: #041520;
  background: #fff;
  border-radius: 4px;
  font-weight: 800;
}
.text-button { color: #fff; background: none; border: 0; cursor: pointer; }
.hero-product { min-height: 600px; }
.hero-product img {
  position: absolute;
  top: 42%;
  left: 50%;
  z-index: 2;
  width: min(720px, 56vw);
  transform: translate(-47%, -45%) rotate(-4deg);
  filter: drop-shadow(0 45px 55px rgba(0,0,0,.42));
  animation: productFloat 7s ease-in-out infinite;
}
.product-halo {
  position: absolute;
  top: 48%;
  left: 50%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(30,184,239,.28), transparent 66%);
  transform: translate(-45%, -50%);
}
.spec-float {
  position: absolute;
  z-index: 3;
  display: flex;
  flex-direction: column;
  padding: 13px 16px;
  background: rgba(7,24,39,.68);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 6px;
  backdrop-filter: blur(12px);
}
.spec-float strong { font-size: 22px; }
.spec-float span { color: #9edaf1; font-size: 12px; }
.spec-one { top: 22%; right: 2%; }
.spec-two { bottom: 18%; left: 5%; }
.scroll-cue {
  position: absolute;
  bottom: 28px;
  left: 50%;
  z-index: 3;
  color: rgba(255,255,255,.5);
  font-size: 9px;
  letter-spacing: 2px;
  transform: translateX(-50%);
}
.scroll-cue span { display: block; width: 1px; height: 30px; margin: 9px auto 0; background: var(--blue); }

.summary { background: var(--pale); }
.metric-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: #cfe1ea; border: 1px solid #cfe1ea; }
.metric-grid article { min-height: 130px; padding: 24px 20px; background: #fff; }
.metric-grid strong { display: block; color: var(--blue); font-size: 35px; }
.metric-grid span { display: block; margin-top: 12px; color: var(--muted); font-size: 12px; }
.strategy-line { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 42px; }
.strategy-line > div { padding-top: 20px; border-top: 3px solid var(--ink); }
.strategy-line span { color: var(--blue); font-size: 12px; font-weight: 800; }
.strategy-line strong { display: block; margin: 12px 0; font-size: 23px; }
.strategy-line p { color: var(--muted); font-size: 14px; line-height: 1.65; }
.decision-banner {
  display: flex;
  gap: 30px;
  align-items: center;
  margin-top: 42px;
  padding: 22px 26px;
  color: #fff;
  background: var(--navy);
}
.decision-banner span { color: #7edcff; font-size: 12px; font-weight: 800; }
.decision-banner strong { font-size: 18px; }

.roadmap-chapter {
  min-height: 100vh;
  padding-top: 104px;
  background:
    linear-gradient(135deg, rgba(7,24,39,.98), rgba(11,45,67,.97)),
    url("assets/hero-bg.jpg") center/cover;
}
.roadmap-chapter .section-head { margin-bottom: 20px; }
.roadmap-chapter h2 { font-size: clamp(36px, 3.5vw, 52px); }
.roadmap-lead {
  margin: 12px 0 0;
  color: #9bb5c4;
  font-size: 14px;
}
.owner-legend {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
  margin: -48px 0 20px;
}
.owner-legend > span { margin-right: 4px; color: #8fa9b8; font-size: 10px; font-weight: 700; }
.owner {
  display: inline-flex;
  align-items: center;
  min-height: 20px;
  padding: 3px 7px;
  color: #bdeeff;
  background: rgba(0,169,232,.15);
  border: 1px solid rgba(0,169,232,.45);
  border-radius: 3px;
  font-size: 9px;
  font-style: normal;
  font-weight: 700;
  white-space: nowrap;
}
.owner.brand-owner {
  color: #fff0b3;
  background: rgba(255,200,61,.12);
  border-color: rgba(255,200,61,.45);
}
.owner.platform-owner {
  color: #baf0d5;
  background: rgba(49,186,122,.12);
  border-color: rgba(49,186,122,.45);
}
.roadmap-grid {
  display: grid;
  grid-template-columns: 154px repeat(3, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.04);
}
.roadmap-grid > div {
  min-width: 0;
  border-right: 1px solid rgba(255,255,255,.1);
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.roadmap-grid > div:nth-child(4n) { border-right: 0; }
.roadmap-grid > div:nth-last-child(-n+4) { border-bottom: 0; }
.roadmap-corner, .phase {
  min-height: 72px;
  padding: 14px 17px;
}
.roadmap-corner {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: rgba(255,255,255,.04);
}
.roadmap-corner span, .phase > span {
  color: #82a4b7;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 1.3px;
}
.roadmap-corner strong { margin-top: 5px; font-size: 15px; }
.phase { position: relative; background: rgba(255,255,255,.055); }
.phase::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  content: "";
  background: #728b9a;
}
.phase-launch { background: rgba(0,169,232,.13); }
.phase-launch::before { background: var(--blue); }
.phase-sustain::before { background: var(--green); }
.phase strong { display: block; margin: 5px 0 2px; font-size: 20px; }
.phase small { color: #93adbb; font-size: 10px; }
.stream-label {
  min-height: 116px;
  padding: 17px;
  background: rgba(255,255,255,.035);
}
.stream-label b { color: var(--blue-2); font-size: 10px; }
.stream-label strong { display: block; margin: 8px 0 9px; font-size: 19px; }
.stream-label span { color: #829cab; font-size: 9px; line-height: 1.45; }
.roadmap-cell {
  min-height: 116px;
  padding: 15px 17px 12px;
  background: rgba(255,255,255,.018);
}
.roadmap-cell.launch-cell { background: rgba(0,169,232,.055); }
.roadmap-cell h3 { margin: 0 0 8px; font-size: 14px; }
.roadmap-cell p {
  min-height: 34px;
  margin: 0 0 9px;
  color: #a3b8c4;
  font-size: 10px;
  line-height: 1.55;
}
.roadmap-cell > div { display: flex; gap: 5px; }
.roadmap-message {
  display: flex;
  gap: 22px;
  align-items: center;
  margin-top: 18px;
  padding: 15px 19px;
  background: rgba(0,169,232,.12);
  border-left: 4px solid var(--blue);
}
.roadmap-message span { color: #7edcff; font-size: 10px; font-weight: 800; white-space: nowrap; }
.roadmap-message strong { font-size: 13px; }

.market-chapter { background: #fff; }
.market-layout { display: grid; grid-template-columns: 1.55fr .75fr; gap: 36px; }
.chart-panel, .signal, .price-band {
  background: #fff;
  border: 1px solid var(--line);
}
.chart-panel { padding: 26px 28px 18px; }
.panel-title { display: flex; justify-content: space-between; align-items: center; }
.panel-title strong { font-size: 18px; }
.panel-title span { color: var(--muted); font-size: 11px; }
.bar-chart { position: relative; display: flex; gap: 54px; align-items: flex-end; height: 330px; padding: 35px 34px 34px 55px; }
.chart-grid { position: absolute; inset: 35px 20px 55px 45px; display: flex; flex-direction: column; justify-content: space-between; }
.chart-grid i { display: block; border-top: 1px solid var(--line); }
.bar-group { position: relative; z-index: 2; flex: 1; text-align: center; }
.bars { display: flex; gap: 5px; align-items: flex-end; justify-content: center; height: 230px; }
.bars b { position: relative; width: 38%; height: var(--h); background: #b8dff1; transform-origin: bottom; }
.bars b.active { background: var(--blue); }
.bars small { position: absolute; top: -22px; left: 0; width: 100%; color: var(--muted); font-size: 10px; font-weight: 400; }
.bar-group > span { display: block; margin-top: 13px; font-size: 12px; font-weight: 700; }
.legend { display: flex; gap: 20px; justify-content: center; color: var(--muted); font-size: 10px; }
.legend span { display: flex; gap: 6px; align-items: center; }
.legend i { width: 10px; height: 10px; background: #b8dff1; }
.legend span:last-child i { background: var(--blue); }
.insight-stack { display: grid; gap: 16px; }
.signal { padding: 24px; border-left: 5px solid var(--blue); }
.signal strong { display: block; color: var(--blue); font-size: 37px; }
.signal span { display: block; margin: 6px 0 16px; font-weight: 700; }
.signal p { margin-bottom: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.signal.compact strong { font-size: 28px; }
.price-band { margin-top: 34px; padding: 25px 30px; }
.band-title { display: flex; justify-content: space-between; margin-bottom: 22px; }
.band-title span { color: var(--muted); font-size: 13px; }
.band-row { display: grid; grid-template-columns: 110px 1fr 210px; gap: 22px; align-items: center; min-height: 48px; }
.band-row b { font-size: 14px; }
.band-row i { height: 13px; overflow: hidden; background: #e8f0f4; border-radius: 2px; }
.band-row em { display: block; height: 100%; background: #8997a3; }
.band-row span { color: var(--muted); font-size: 12px; }
.band-row.focus em { background: var(--blue); }
.band-row.focus.alt em { background: var(--blue-2); }

.gtm-chapter { background: linear-gradient(135deg, #071827, #0d3049 70%, #0a4762); }
.product-stage { position: relative; height: 370px; margin-top: -20px; }
.product-stage img { position: absolute; top: 50%; left: 50%; width: min(680px, 62vw); transform: translate(-50%, -50%); filter: drop-shadow(0 30px 40px rgba(0,0,0,.45)); }
.spec-ring { position: absolute; display: flex; flex-direction: column; min-width: 150px; padding: 13px 15px; background: rgba(255,255,255,.07); border-left: 3px solid var(--blue); backdrop-filter: blur(10px); }
.spec-ring strong { font-size: 18px; }
.spec-ring span { margin-top: 4px; color: #98cce0; font-size: 11px; }
.ring-1 { top: 8%; left: 2%; }.ring-2 { top: 8%; right: 2%; }.ring-3 { bottom: 8%; left: 7%; }.ring-4 { right: 7%; bottom: 8%; }
.compare { margin-top: 34px; border-top: 1px solid rgba(255,255,255,.16); border-left: 1px solid rgba(255,255,255,.1); }
.compare > div { display: grid; grid-template-columns: .8fr 1.35fr 1.2fr 1.3fr; }
.compare span, .compare strong, .compare b { padding: 13px 16px; border-right: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1); font-size: 12px; text-align: center; }
.compare b { color: #8fb2c5; text-align: left; }
.compare strong { color: #fff; background: rgba(0,169,232,.12); }
.compare-head { background: rgba(255,255,255,.08); }
.pricing-cards { display: grid; grid-template-columns: 1fr 180px 1fr; align-items: center; margin-top: 36px; }
.pricing-cards article { padding: 25px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.16); }
.pricing-cards article.primary { border-color: var(--blue); }
.pricing-cards article > span { color: #90afc0; font-size: 11px; }
.pricing-cards article strong { display: block; margin: 9px 0; color: var(--blue-2); font-size: 37px; }
.pricing-cards article small { font-size: 14px; }
.pricing-cards article p { margin: 0; font-size: 13px; }
.price-gap { display: flex; flex-direction: column; align-items: center; color: #91afc0; font-size: 11px; }
.price-gap i { width: 1px; height: 28px; background: rgba(255,255,255,.25); }

.channel-chapter { background: var(--pale); }
.channel-visual { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: center; }
.donut { position: relative; width: 340px; max-width: 100%; aspect-ratio: 1; margin: auto; background: conic-gradient(var(--blue) 0 65%, var(--orange) 65% 90%, #17823a 90%); border-radius: 50%; box-shadow: 0 25px 70px rgba(7,24,39,.13); }
.donut::after { position: absolute; inset: 23%; content: ""; background: var(--pale); border-radius: 50%; }
.donut-center { position: absolute; inset: 0; z-index: 2; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.donut-center strong { font-size: 43px; }
.donut-center span { color: var(--muted); font-size: 11px; }
.channel-list { display: grid; gap: 3px; }
.channel-list article { display: grid; grid-template-columns: 5px 145px 70px 1fr; gap: 17px; align-items: center; padding: 20px; background: #fff; }
.channel-list i { width: 5px; height: 100%; background: var(--blue); }
.channel-list i.wb { background: var(--orange); }.channel-list i.yandex { background: #17823a; }
.channel-list b { font-size: 24px; }
.channel-list span { color: var(--muted); font-size: 12px; }
.channel-list p { grid-column: 2 / 5; margin: -4px 0 0; color: var(--muted); font-size: 12px; }
.package { display: grid; grid-template-columns: 1fr .42fr; gap: 30px; margin-top: 48px; padding: 30px; color: #fff; background: var(--navy); }
.package-equation { display: grid; grid-template-columns: 1fr 45px 1fr 45px 1fr; align-items: center; }
.package-equation div { text-align: center; }
.package-equation strong { display: block; color: var(--blue-2); font-size: 40px; }
.package-equation .green strong { color: var(--green); }
.package-equation span { color: #9ab2c1; font-size: 11px; }
.package-equation > b { font-size: 30px; text-align: center; }
.package-result { padding-left: 30px; border-left: 1px solid rgba(255,255,255,.14); }
.package-result p { margin: 5px 0 12px; color: #a3bac7; font-size: 12px; }
.package-result strong { color: #fff; font-size: 21px; }
.conversion { margin-top: 28px; padding: 22px 30px; background: #fff; }
.conversion > span { display: block; margin-bottom: 16px; font-weight: 800; }
.conversion > div { display: grid; grid-template-columns: 70px 1fr 90px; gap: 16px; align-items: center; margin-top: 10px; }
.conversion b, .conversion strong { font-size: 12px; }
.conversion i { height: 7px; background: #e5eef2; }
.conversion em { display: block; height: 100%; background: var(--blue); }

.marketing-chapter { background: #091621; }
.funnel { display: grid; grid-template-columns: 1.25fr 1fr .75fr; align-items: stretch; }
.funnel-stage { position: relative; padding: 28px; background: #14344c; border-right: 1px solid rgba(255,255,255,.12); clip-path: polygon(0 0, calc(100% - 35px) 0, 100% 50%, calc(100% - 35px) 100%, 0 100%, 35px 50%); margin-left: -25px; }
.funnel-stage:first-child { margin-left: 0; clip-path: polygon(0 0, calc(100% - 35px) 0, 100% 50%, calc(100% - 35px) 100%, 0 100%); }
.funnel-stage.interest { background: #0c6d94; }.funnel-stage.purchase { background: var(--blue); color: #04151f; }
.funnel-stage span, .funnel-stage small { display: block; font-size: 9px; letter-spacing: 1.2px; opacity: .65; }
.funnel-stage strong { display: block; margin: 9px 0; font-size: 20px; }
.marketing-table { margin-top: 38px; border-top: 1px solid rgba(255,255,255,.15); }
.marketing-table > div { display: grid; grid-template-columns: 1.4fr .7fr .8fr 1fr; }
.marketing-table span, .marketing-table strong { padding: 12px 16px; border-right: 1px solid rgba(255,255,255,.08); border-bottom: 1px solid rgba(255,255,255,.08); font-size: 12px; }
.marketing-table .table-head { color: #83dfff; background: rgba(255,255,255,.06); font-weight: 800; }
.marketing-note { display: grid; grid-template-columns: 180px 200px 1fr; gap: 24px; align-items: center; margin-top: 30px; padding: 22px; background: rgba(255,255,255,.06); border-left: 4px solid var(--blue); }
.marketing-note strong { color: var(--blue-2); font-size: 31px; }.marketing-note span { color: #fff; font-weight: 700; }.marketing-note p { margin: 0; color: #9db2c0; font-size: 12px; }

.ecommerce-chapter { background: #fff; }
.commerce-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.commerce-grid article { min-height: 175px; padding: 24px; background: var(--pale); border-top: 3px solid var(--blue); }
.commerce-grid span { color: var(--blue); font-size: 11px; font-weight: 800; }
.commerce-grid strong { display: block; margin: 13px 0 23px; font-size: 20px; }
.commerce-grid p { color: var(--muted); font-size: 12px; line-height: 1.65; }
.launch-clock { display: grid; grid-template-columns: 1fr 220px; align-items: center; margin-top: 30px; padding: 28px 34px; color: #fff; background: var(--navy); }
.clock-copy span { color: #7edcff; font-size: 11px; font-weight: 800; }
.clock-copy strong { display: block; margin: 10px 0; font-size: 28px; }
.clock-copy p { margin: 0; color: #9bb2c0; }
.clock-face { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; width: 130px; height: 130px; margin: auto; border: 2px solid var(--blue); border-radius: 50%; }
.clock-face strong { color: var(--blue-2); font-size: 49px; line-height: 1; }
.clock-face span { font-size: 9px; letter-spacing: 2px; }
.clock-face i { position: absolute; top: 8px; width: 2px; height: 18px; background: #fff; transform-origin: 1px 56px; animation: tick 6s linear infinite; }
.timeline { display: grid; grid-template-columns: repeat(5, 1fr); margin-top: 35px; border-top: 2px solid var(--line); }
.timeline div { position: relative; padding: 23px 16px 0; }
.timeline div::before { position: absolute; top: -7px; left: 16px; width: 12px; height: 12px; content: ""; background: #fff; border: 2px solid var(--blue); border-radius: 50%; }
.timeline b, .timeline strong, .timeline span { display: block; }
.timeline b { color: var(--blue); font-size: 11px; }.timeline strong { margin: 7px 0; font-size: 14px; }.timeline span { color: var(--muted); font-size: 10px; line-height: 1.5; }
.timeline .hot { background: var(--pale); }.timeline .hot::before { background: var(--blue); }

.finance-chapter { background: linear-gradient(135deg, #071827, #102638); }
.finance-kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.12); }
.finance-kpis article { padding: 25px; background: rgba(255,255,255,.05); }
.finance-kpis strong { display: block; color: var(--blue-2); font-size: 34px; }
.finance-kpis span { display: block; margin-top: 11px; color: #91a9b7; font-size: 11px; }
.finance-kpis .positive strong, .profit-box.positive strong { color: var(--green); }
.finance-kpis .negative strong, .profit-box.negative strong { color: #ff5a4f; }
.finance-kpis .warning strong { color: var(--yellow); }
.profit-equation { display: grid; grid-template-columns: 1fr 50px 1fr 50px 1fr; align-items: center; margin-top: 34px; }
.profit-equation > b { font-size: 30px; text-align: center; }
.profit-box { padding: 25px; text-align: center; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.14); }
.profit-box strong { display: block; font-size: 37px; }
.profit-box span, .profit-box small { display: block; margin-top: 10px; }.profit-box small { color: #91a9b7; }
.support { display: grid; grid-template-columns: .8fr 1.2fr; gap: 55px; margin-top: 54px; padding-top: 40px; border-top: 1px solid rgba(255,255,255,.15); }
.support-intro h3 { font-size: 31px; line-height: 1.2; }
.support-intro > p:last-child { color: #91a9b7; font-size: 12px; line-height: 1.6; }
.support ol { margin: 0; padding: 0; list-style: none; }
.support li { display: grid; grid-template-columns: 40px 210px 1fr; align-items: center; min-height: 57px; border-bottom: 1px solid rgba(255,255,255,.11); }
.support li b { color: var(--blue-2); }.support li strong { font-size: 14px; }.support li span { color: #96adba; font-size: 11px; }
.closing { display: grid; grid-template-columns: 80px 1fr auto; gap: 20px; align-items: center; margin-top: 45px; padding: 25px 0; border-top: 3px solid var(--blue); }
.closing span { color: var(--blue-2); font-size: 11px; font-weight: 800; }.closing strong { font-size: 20px; }.closing a { color: #8cb0c2; font-size: 11px; }

.present-controls {
  position: fixed;
  right: 28px;
  bottom: 24px;
  z-index: 120;
  display: none;
  align-items: center;
  color: #fff;
  background: rgba(4,17,27,.82);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 6px;
  backdrop-filter: blur(12px);
}
.present-controls button { width: 42px; height: 40px; color: #fff; background: transparent; border: 0; cursor: pointer; }
.present-controls span { min-width: 58px; font-size: 11px; text-align: center; }
.presenting { scroll-snap-type: y mandatory; }
.presenting .chapter { min-height: 100vh; scroll-snap-align: start; }
.presenting .topbar { color: #fff; background: rgba(4,17,27,.72); border-color: rgba(255,255,255,.12); }
.presenting .nav a { color: #a8bdc8; }.presenting .nav a.active { color: #fff; }
.presenting .mode-button { color: #fff; border-color: rgba(255,255,255,.25); }
.presenting .present-controls { display: flex; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity: 1; transform: none; }
.hero .reveal { opacity: 1; transform: none; }

@keyframes productFloat { 0%,100% { transform: translate(-47%, -45%) rotate(-4deg); } 50% { transform: translate(-47%, -48%) rotate(-2deg); } }
@keyframes tick { to { transform: rotate(360deg); } }

@media (max-width: 900px) {
  :root { --content: calc(100vw - 36px); }
  .topbar { grid-template-columns: 1fr auto; padding: 0 18px; }
  .nav { display: none; }
  .chapter { padding: 106px 18px 70px; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { padding-top: 70px; }
  .hero-product { min-height: 410px; }
  .hero-product img { width: 100%; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .strategy-line, .commerce-grid { grid-template-columns: 1fr 1fr; }
  .roadmap-grid {
    grid-template-columns: 125px repeat(3, minmax(260px, 1fr));
    overflow-x: auto;
  }
  .owner-legend { margin-top: 0; justify-content: flex-start; }
  .market-layout, .channel-visual, .support { grid-template-columns: 1fr; }
  .channel-list article { grid-template-columns: 5px 115px 60px 1fr; }
  .package { grid-template-columns: 1fr; }
  .package-result { padding: 20px 0 0; border-top: 1px solid rgba(255,255,255,.14); border-left: 0; }
  .compare { overflow-x: auto; }
  .compare > div { min-width: 760px; }
  .marketing-table { overflow-x: auto; }
  .marketing-table > div { min-width: 720px; }
  .finance-kpis { grid-template-columns: 1fr 1fr; }
  .section-index { right: 18px; }
}

@media (max-width: 600px) {
  h2 { font-size: 35px; }
  .hero h1 { font-size: 76px; }
  .strategy-line, .commerce-grid, .finance-kpis { grid-template-columns: 1fr; }
  .bar-chart { gap: 12px; padding-left: 20px; }
  .price-band { padding: 20px 16px; }
  .band-row { grid-template-columns: 85px 1fr; }
  .band-row span { grid-column: 2; }
  .package-equation { grid-template-columns: 1fr; gap: 10px; }
  .package-equation > b { transform: rotate(90deg); }
  .funnel { grid-template-columns: 1fr; }
  .funnel-stage, .funnel-stage:first-child { margin: 0; clip-path: none; }
  .marketing-note { grid-template-columns: 1fr; }
  .launch-clock { grid-template-columns: 1fr; gap: 25px; }
  .timeline { grid-template-columns: 1fr; border-top: 0; border-left: 2px solid var(--line); }
  .timeline div::before { top: 25px; left: -7px; }
  .profit-equation { grid-template-columns: 1fr; gap: 12px; }
  .profit-equation > b { transform: rotate(90deg); }
  .support li { grid-template-columns: 35px 1fr; padding: 12px 0; }
  .support li span { grid-column: 2; margin-top: 5px; }
  .closing { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}