:root {
  --navy-950: #031126;
  --navy-900: #071a36;
  --navy-800: #0b2851;
  --navy-700: #123f77;
  --blue-700: #075fd6;
  --blue-600: #0879ef;
  --blue-500: #1594ff;
  --blue-200: #baddff;
  --blue-100: #e6f3ff;
  --blue-050: #f4f9ff;
  --ink: #071a36;
  --muted: #4e6582;
  --line: #d2e1f0;
  --white: #ffffff;
  --page: #edf5fc;
  --shadow: 0 24px 70px rgba(5, 49, 99, .16), 0 4px 14px rgba(5, 49, 99, .09);
  --radius: 18px;
  --container: 1200px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 96px; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--page);
  font-family: "Segoe UI Variable", "Segoe UI", Inter, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
img { display: block; max-width: 100%; }

.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;
  z-index: 999;
  left: 1rem;
  top: 1rem;
  transform: translateY(-160%);
  padding: .75rem 1rem;
  border-radius: 8px;
  background: var(--navy-950);
  color: var(--white);
  text-decoration: none;
}

.skip-link:focus { transform: translateY(0); }

:focus-visible {
  outline: 3px solid #ffbf47;
  outline-offset: 3px;
}

.container {
  width: min(var(--container), calc(100% - 48px));
  margin-inline: auto;
}

.section-wide { width: 100%; }

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid rgba(151, 182, 214, .45);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand { display: inline-flex; flex: 0 0 auto; text-decoration: none; }
.brand img { width: 210px; height: auto; }

.primary-nav { display: flex; align-items: center; gap: clamp(1.5rem, 4vw, 3.5rem); }
.primary-nav a {
  position: relative;
  padding: .65rem 0;
  color: #112b50;
  font-size: .95rem;
  font-weight: 700;
  text-decoration: none;
}
.primary-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: .35rem;
  left: 0;
  height: 2px;
  transform: scaleX(0);
  background: var(--blue-600);
  transition: transform .2s ease;
}
.primary-nav a:hover::after, .primary-nav a.active::after { transform: scaleX(1); }
.primary-nav a.active { color: var(--blue-700); }

.nav-toggle { display: none; width: 46px; height: 46px; padding: 10px; border: 0; background: transparent; }
.nav-toggle span:not(.sr-only) { display: block; height: 2px; margin: 5px 0; background: var(--navy-900); border-radius: 2px; }

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    linear-gradient(118deg, rgba(255,255,255,.98) 8%, rgba(241,249,255,.95) 50%, rgba(225,242,255,.98) 100%);
  border-bottom: 1px solid var(--line);
}

.hero::before, .hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  border: 1px solid rgba(21, 148, 255, .18);
  border-radius: 50%;
}
.hero::before { width: 760px; height: 760px; right: -220px; top: -380px; }
.hero::after { width: 530px; height: 530px; right: -60px; top: -255px; }
.hero-glow {
  position: absolute;
  z-index: -2;
  width: 40vw;
  height: 40vw;
  right: 4vw;
  top: 2rem;
  border-radius: 50%;
  background: rgba(41, 157, 255, .16);
  filter: blur(80px);
}

.hero-grid {
  min-height: 720px;
  padding-block: 88px 74px;
  display: grid;
  grid-template-columns: .77fr 1.23fr;
  align-items: center;
  gap: 3.2rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--blue-700);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 650px;
  font-size: clamp(3.6rem, 5.5vw, 5.9rem);
  line-height: .88;
  letter-spacing: -.065em;
}
.hero h1 span { color: var(--blue-600); }
.hero-lead { max-width: 520px; margin: 2rem 0 0; color: #183a67; font-size: 1.2rem; line-height: 1.55; }

.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.button {
  min-height: 52px;
  padding: .9rem 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  border: 1px solid transparent;
  border-radius: 10px;
  font-weight: 750;
  line-height: 1.1;
  text-align: center;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--white); background: linear-gradient(135deg, var(--blue-700), var(--blue-500)); box-shadow: 0 11px 26px rgba(8, 121, 239, .24); }
.button-primary:hover { box-shadow: 0 14px 31px rgba(8, 121, 239, .34); }
.button-secondary { color: var(--navy-800); background: rgba(255,255,255,.78); border-color: #8ab7e7; }
.button-secondary:hover { background: var(--white); }
.hero-note { margin: 1rem 0 0; color: var(--muted); font-size: .9rem; }

.product-stage { position: relative; min-width: 0; }
.stage-orbit { position: absolute; z-index: -1; border: 1px solid rgba(8, 121, 239, .18); border-radius: 50%; }
.orbit-one { width: 520px; height: 520px; top: -90px; right: -160px; }
.orbit-two { width: 350px; height: 350px; bottom: -90px; left: -90px; }

.app-window {
  position: relative;
  overflow: hidden;
  width: 100%;
  min-width: 0;
  background: var(--white);
  border: 1px solid #bcd4ec;
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.app-titlebar {
  min-height: 62px;
  padding: .7rem .85rem;
  display: grid;
  grid-template-columns: auto minmax(180px, 1fr) auto auto;
  align-items: center;
  gap: .8rem;
  background: #fafdff;
  border-bottom: 1px solid #d8e6f4;
}
.app-brand { display: flex; align-items: center; gap: .35rem; color: var(--navy-900); font-size: .92rem; }
.app-brand img { width: 28px; height: 28px; object-fit: contain; }
.app-search { height: 37px; padding: 0 .7rem; display: flex; align-items: center; gap: .55rem; background: var(--white); border: 1px solid #d5e3f1; border-radius: 8px; }
.app-search svg { width: 17px; fill: none; stroke: #41658d; stroke-width: 2; }
.app-search input { min-width: 0; width: 100%; border: 0; outline: 0; color: #24476f; background: transparent; font-size: .78rem; }
.app-profile { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid #c5d9ec; border-radius: 50%; background: #e7f2fd; color: #183f6e; font-size: .72rem; font-weight: 800; }
.window-controls { display: flex; align-items: center; gap: .55rem; color: #56728f; font-size: .95rem; }

.app-body { min-height: 426px; display: grid; grid-template-columns: 128px 175px minmax(0, 1fr); font-size: .78rem; }
.mail-sidebar { padding: 1rem .65rem; background: #f8fbfe; border-right: 1px solid #dce8f4; }
.sidebar-label, .sidebar-group { margin: 0 0 .55rem; font-weight: 700; }
.sidebar-group { margin-top: .9rem; color: #6a8097; font-size: .68rem; text-transform: uppercase; letter-spacing: .08em; }
.folder { width: 100%; min-height: 33px; padding: .35rem .45rem; display: flex; align-items: center; gap: .45rem; border: 0; border-radius: 7px; color: #274667; background: transparent; text-align: left; font-size: .74rem; cursor: pointer; }
.folder b { margin-left: auto; min-width: 18px; padding: 1px 4px; color: var(--blue-700); background: #cae7ff; border-radius: 10px; text-align: center; }
.folder.active { color: var(--blue-700); background: #dcedff; font-weight: 800; }
.folder.add { margin-top: .25rem; color: #60778f; }

.message-list { min-width: 0; border-right: 1px solid #dce8f4; }
.pane-heading { min-height: 48px; padding: 0 .7rem; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #dce8f4; }
.pane-heading span { color: #60758d; font-size: .66rem; }
.message { position: relative; min-height: 83px; padding: .7rem .55rem .65rem 1.2rem; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .25rem; border-bottom: 1px solid #e4edf6; color: #34506d; }
.message.active { background: #e8f4ff; }
.message div { min-width: 0; display: flex; flex-direction: column; }
.message strong, .message b, .message small { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.message strong { color: #0a2444; font-size: .72rem; }
.message b { color: #193a60; font-size: .68rem; }
.message small { color: #657b92; font-size: .62rem; }
.message time { color: #52708e; font-size: .58rem; }
.unread-dot { position: absolute; width: 7px; height: 7px; left: .45rem; top: .95rem; background: var(--blue-600); border-radius: 50%; }

.reader { min-width: 0; background: #fff; }
.reader-heading { min-height: 48px; padding: 0 .8rem; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #dce8f4; font-size: .9rem; }
.reader-actions { color: #41698f; }
.mobile-back { display: none; }
.sender-row { padding: .75rem .8rem .45rem; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: .55rem; }
.avatar { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; background: #dbe9f7; color: #234c78; font-weight: 800; }
.avatar.small { width: 26px; height: 26px; font-size: .66rem; }
.sender-row div { display: flex; flex-direction: column; }
.sender-row small, .sender-row time { color: #6c8197; font-size: .62rem; }
.message-copy { margin: .2rem .8rem .75rem; color: #24476b; }
.suggestion-card { position: relative; margin: 0 .7rem .8rem; padding: .7rem; background: #edf7ff; border: 1px solid #a9d5ff; border-radius: 10px; }
.suggestion-heading { display: flex; justify-content: space-between; gap: .6rem; color: var(--blue-700); }
.saved-status { color: #367c54; font-size: .66rem; }
.context-chips { display: flex; flex-wrap: wrap; gap: .3rem; margin: .55rem 0; }
.context-chips button { padding: .28rem .45rem; color: #31577d; background: #fff; border: 1px solid #d5e5f3; border-radius: 6px; font-size: .6rem; }
.suggestion-card textarea { width: 100%; min-height: 110px; resize: vertical; padding: .65rem; color: #173c64; background: #fff; border: 1px solid #c8deef; border-radius: 7px; font-size: .69rem; line-height: 1.45; }
.suggestion-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .35rem; margin-top: .45rem; }
.app-button { min-height: 34px; padding: .4rem .6rem; color: var(--blue-700); background: #fff; border: 1px solid #75b4ed; border-radius: 6px; font-size: .64rem; font-weight: 800; cursor: pointer; }
.app-button.primary { color: #fff; background: var(--blue-700); border-color: var(--blue-700); }
.text-action { margin-left: auto; padding: .35rem 0; color: var(--blue-700); background: transparent; border: 0; font-size: .6rem; text-decoration: underline; cursor: pointer; }
.why-panel { margin-top: .5rem; padding: .55rem; color: #365575; background: #fff; border-left: 3px solid var(--blue-600); font-size: .66rem; }
.preview-label { margin: .8rem 0 0; color: #5b7896; font-size: .76rem; text-align: center; }

.experience { padding: 96px 0 86px; background: #fff; }
.section-heading { max-width: 790px; margin: 0 auto 3.4rem; text-align: center; }
.section-heading h2, .learning h2, .ecosystem h2, .faq h2, .legal-main h1 {
  margin: 0;
  font-size: clamp(2.35rem, 4vw, 4rem);
  line-height: 1.02;
  letter-spacing: -.045em;
}
.section-heading h2 span, .ecosystem h2 span { color: var(--blue-600); }
.section-heading p { margin: 1rem auto 0; color: var(--muted); font-size: 1.08rem; }

.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.benefit { min-width: 0; padding: 0 1.5rem; border-left: 1px solid var(--line); }
.benefit:first-child { border-left: 0; }
.benefit-icon { width: 48px; height: 48px; margin-bottom: 1rem; color: var(--blue-600); }
.benefit-icon svg { width: 100%; fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.benefit h3 { margin: 0; font-size: 1.45rem; line-height: 1.1; letter-spacing: -.025em; }
.benefit > p { min-height: 54px; margin: .65rem 0 1.25rem; color: var(--muted); }
.mini-card { min-height: 172px; padding: 1rem; background: var(--blue-050); border: 1px solid #d8eafa; border-radius: 14px; box-shadow: 0 12px 32px rgba(30, 103, 171, .08); }
.mini-message div { display: flex; align-items: center; gap: .55rem; }
.mini-message p { color: #3e6082; font-size: .9rem; }
.mini-line { display: block; width: 48%; height: 8px; margin-top: .45rem; background: #cfe2f5; border-radius: 6px; }
.mini-line.wide { width: 85%; }
.preference-card { display: flex; flex-direction: column; gap: .7rem; }
.preference-card strong { color: var(--blue-700); }
.preference-card label { display: flex; align-items: center; gap: .55rem; color: #355677; font-size: .84rem; }
.preference-card input { width: 18px; height: 18px; accent-color: var(--blue-600); }
.control-card > div { display: flex; justify-content: space-between; gap: .5rem; color: var(--blue-700); font-size: .78rem; }
.control-card > div span { color: #3b7c59; font-size: .7rem; }
.control-card p { color: #355777; font-size: .86rem; }
.control-card button { min-height: 34px; margin: .25rem .2rem 0 0; padding: .35rem .55rem; color: var(--blue-700); background: #fff; border: 1px solid #8dbde8; border-radius: 6px; font-size: .72rem; font-weight: 700; }
.control-card button:first-of-type { color: #fff; background: var(--blue-700); border-color: var(--blue-700); }

.learning {
  position: relative;
  overflow: hidden;
  padding: 86px 0;
  background:
    radial-gradient(circle at 90% 15%, rgba(48, 162, 255, .18), transparent 23%),
    linear-gradient(135deg, #e9f6ff, #f7fbff 55%, #e8f5ff);
  border-block: 1px solid #d4e7f7;
}
.learning::before {
  content: "";
  position: absolute;
  width: 600px;
  height: 600px;
  right: -300px;
  bottom: -460px;
  border: 1px solid rgba(8,121,239,.18);
  border-radius: 50%;
}
.learning-shell { display: grid; grid-template-columns: .75fr 1.6fr; gap: 3rem; align-items: center; }
.learning-intro p:last-child { max-width: 430px; color: var(--muted); }
.learning-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 1rem; }
.learning-flow article { min-height: 150px; padding: 1.1rem; background: rgba(255,255,255,.88); border: 1px solid #c9e2f7; border-radius: 14px; box-shadow: 0 10px 26px rgba(17, 87, 148, .08); }
.step-label { color: var(--blue-700); font-size: .72rem; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.learning-flow p { margin: 1rem 0 0; color: #1f4164; font-size: 1rem; }
.flow-arrow { color: var(--blue-600); font-size: 1.75rem; }
.saved-preference { grid-column: 2; justify-self: center; margin-top: -1rem; padding: .65rem 1rem; color: #274f75; background: #fff; border: 1px solid #bcdcf5; border-radius: 999px; font-size: .85rem; box-shadow: 0 10px 20px rgba(17, 87, 148, .08); }
.saved-preference span { color: var(--blue-600); font-weight: 900; }

.ecosystem {
  position: relative;
  overflow: hidden;
  padding: 96px 0;
  color: #fff;
  background:
    radial-gradient(circle at 92% 20%, rgba(17, 122, 233, .31), transparent 24%),
    radial-gradient(circle at 12% 92%, rgba(9, 111, 218, .17), transparent 30%),
    #031426;
}
.ecosystem::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .22;
  background-image: linear-gradient(125deg, transparent 0 49%, rgba(79,168,255,.18) 49.15% 49.3%, transparent 49.45% 100%);
  background-size: 240px 240px;
}
.ecosystem-grid { position: relative; display: grid; grid-template-columns: .85fr 1.15fr; gap: 4rem; align-items: center; }
.ecosystem .eyebrow { color: #68baff; }
.ecosystem h2 { max-width: 520px; font-size: clamp(2.5rem, 4.3vw, 4.7rem); }
.ecosystem h2 span { color: #7bc4ff; }
.ecosystem-copy > p:not(.eyebrow) { max-width: 560px; color: #c7d9e9; }
.button-glow { margin-top: 1rem; color: #fff; background: linear-gradient(135deg, #0872df, #149bff); box-shadow: 0 12px 30px rgba(15, 142, 255, .28); }
.ecosystem-copy small { display: block; margin-top: .75rem; color: #8faac1; }
.ecosystem-options { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.product-context { min-width: 0; min-height: 390px; padding: 1.4rem; background: rgba(5, 34, 64, .76); border: 1px solid rgba(108, 186, 255, .53); border-radius: 16px; box-shadow: 0 18px 45px rgba(0,0,0,.18); }
.context-kicker { color: #6cbae8; font-size: .7rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.product-context h3 { margin: .25rem 0 1.2rem; font-size: 1.35rem; }
.product-context p { margin: 1.2rem 0 0; color: #d2dfeb; }
.device { max-width: 250px; margin: 1.5rem auto; }
.device-screen { aspect-ratio: 16/10; padding: 1.2rem; display: grid; place-items: center; background: #f9fcff; border: 7px solid #dce7f1; border-radius: 10px 10px 5px 5px; }
.device-screen img { width: 85%; }
.device-base { width: 112%; height: 9px; margin-left: -6%; background: linear-gradient(#e8f0f7, #a9b8c6); border-radius: 0 0 50% 50%; }
.suite-preview { min-height: 184px; display: grid; grid-template-columns: 42% 58%; overflow: hidden; background: #ecf7ff; border: 6px solid #d9e6f1; border-radius: 10px; }
.suite-preview aside { padding: .8rem; display: flex; flex-direction: column; gap: .5rem; color: #bed6e9; background: #09294d; font-size: .68rem; }
.suite-preview aside strong { color: #fff; font-size: .82rem; }
.suite-preview aside span { padding: .35rem; border-radius: 5px; }
.suite-preview aside .selected { color: #fff; background: var(--blue-600); }
.suite-preview > div { padding: 1.1rem .85rem; display: flex; flex-direction: column; gap: .75rem; }
.suite-preview i { display: block; height: 15px; background: #bddcf5; border-radius: 10px; }
.suite-preview i:nth-child(2) { width: 72%; }.suite-preview i:nth-child(3) { width: 86%; }.suite-preview i:nth-child(4) { width: 57%; }

.faq { padding: 92px 0; background: #fff; }
.faq-grid { display: grid; grid-template-columns: .62fr 1.38fr; gap: 5rem; align-items: start; }
.faq-intro > p:last-child { color: var(--muted); }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 1.3rem 3rem 1.3rem 0; color: #102c50; font-size: 1.04rem; font-weight: 750; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: .5rem; top: 1rem; color: var(--blue-600); font-size: 1.5rem; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 700px; margin: -.25rem 3rem 1.35rem 0; color: var(--muted); }

.site-footer { color: #c7d6e4; background: #020d1a; border-top: 1px solid #17334d; }
.footer-inner { min-height: 112px; display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: 2rem; }
.footer-brand img { width: 160px; filter: brightness(0) invert(1); opacity: .92; }
.footer-inner p { margin: 0; font-size: .82rem; }
.footer-inner nav { display: flex; gap: 1.25rem; }
.footer-inner a { color: #dce8f2; text-decoration: none; }
.footer-inner nav a:hover { color: #6bc0ff; }

.review-dialog { width: min(470px, calc(100% - 32px)); padding: 2.2rem; color: var(--ink); background: #fff; border: 1px solid #b9d7ef; border-radius: 18px; box-shadow: var(--shadow); text-align: center; }
.review-dialog::backdrop { background: rgba(1, 13, 27, .64); backdrop-filter: blur(4px); }
.dialog-close { position: absolute; right: .8rem; top: .6rem; width: 42px; height: 42px; color: #496987; background: transparent; border: 0; font-size: 1.7rem; cursor: pointer; }
.dialog-icon { width: 58px; height: 58px; margin: 0 auto 1rem; display: grid; place-items: center; color: #fff; background: var(--blue-600); border-radius: 50%; font-size: 1.7rem; }
.review-dialog h2 { margin: 0; font-size: 1.7rem; }
.review-dialog p { color: var(--muted); }

.legal-page { min-height: 100vh; display: flex; flex-direction: column; background: #f5f9fd; }
.legal-main { flex: 1; padding: 76px 0 96px; }
.legal-card { max-width: 900px; padding: clamp(1.5rem, 4vw, 4rem); background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 20px 50px rgba(14, 71, 126, .08); }
.legal-card h2 { margin: 2.1rem 0 .5rem; font-size: 1.35rem; }
.legal-card p, .legal-card li { color: #3e5874; }
.legal-card a { color: var(--blue-700); }
.legal-meta { margin-top: 1rem; color: #688097; font-size: .9rem; }
.simple-header { position: static; }
.simple-back { color: var(--blue-700); font-weight: 750; text-decoration: none; }

@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; padding-top: 70px; }
  .hero-copy { max-width: 720px; }
  .product-stage { width: 100%; }
  .learning-shell { grid-template-columns: 1fr; }
  .saved-preference { grid-column: 1; margin-top: 0; }
  .ecosystem-grid { grid-template-columns: 1fr; }
  .ecosystem-copy { max-width: 760px; }
  .faq-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-inner { grid-template-columns: auto 1fr auto; }
  .footer-inner > p:last-child { grid-column: 2; }
}

@media (max-width: 820px) {
  html { scroll-padding-top: 76px; }
  .container { width: min(var(--container), calc(100% - 32px)); }
  .header-inner { min-height: 74px; }
  .brand img { width: 170px; }
  .nav-toggle { display: block; }
  .primary-nav {
    position: absolute;
    top: 74px;
    right: 0;
    left: 0;
    padding: 1rem 16px 1.4rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: .2rem;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 32px rgba(14, 70, 123, .12);
  }
  .primary-nav.open { display: flex; }
  .primary-nav a { padding: .85rem 1rem; border-radius: 8px; }
  .primary-nav a:hover, .primary-nav a.active { background: var(--blue-050); }
  .primary-nav a::after { display: none; }
  .benefit-grid { grid-template-columns: 1fr; gap: 2.4rem; }
  .benefit { padding: 0; border-left: 0; }
  .benefit > p { min-height: 0; }
  .learning-flow { grid-template-columns: 1fr; }
  .flow-arrow { transform: rotate(90deg); justify-self: center; }
  .learning-flow article { min-height: 0; }
  .ecosystem-options { grid-template-columns: 1fr 1fr; }
  .footer-inner { padding-block: 2rem; grid-template-columns: 1fr; justify-items: start; gap: 1rem; }
  .footer-inner > p:last-child { grid-column: 1; }
}

@media (max-width: 660px) {
  .hero-grid { min-height: 0; padding-block: 58px 62px; gap: 2.8rem; }
  .hero h1 { font-size: clamp(3.25rem, 16vw, 4.65rem); }
  .hero-lead { font-size: 1.06rem; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .app-titlebar { grid-template-columns: auto minmax(0,1fr) auto; gap: .45rem; }
  .app-brand strong { display: none; }
  .window-controls { display: none; }
  .app-profile { width: 31px; height: 31px; }
  .app-search input { font-size: .7rem; }
  .app-body { min-height: 520px; grid-template-columns: 1fr; }
  .mail-sidebar, .message-list { display: none; }
  .mobile-back { display: inline; margin-right: .45rem; color: var(--blue-600); font-size: 1.4rem; }
  .reader-heading { font-size: 1rem; }
  .sender-row, .message-copy { font-size: .86rem; }
  .suggestion-card { margin: .2rem .55rem .7rem; padding: .75rem; }
  .suggestion-card textarea { min-height: 170px; font-size: .78rem; }
  .context-chips button, .app-button, .text-action { font-size: .7rem; }
  .preview-label { font-size: .7rem; }
  .experience, .learning, .ecosystem, .faq { padding-block: 68px; }
  .section-heading { margin-bottom: 2.5rem; text-align: left; }
  .section-heading h2, .learning h2, .ecosystem h2, .faq h2 { font-size: clamp(2.2rem, 11vw, 3.3rem); }
  .benefit { padding-bottom: 2rem; border-bottom: 1px solid var(--line); }
  .benefit:last-child { border-bottom: 0; }
  .ecosystem-options { grid-template-columns: 1fr; }
  .product-context { min-height: 0; }
  .faq-list summary { font-size: 1rem; }
  .footer-inner nav { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}