:root {
  --brand: #6f5cff;
  --brand-2: #7b74ff;
  --cyan: #4ab6ff;
  --cyan-2: #7fd6ff;
  --bg: #f4f5fb;
  --surface: #ffffff;
  --ink: #1f2233;
  --ink-2: #6e738c;
  --line: rgba(95, 103, 140, 0.10);
  --line-2: rgba(95, 103, 140, 0.06);
  --shadow-card: 0 20px 50px rgba(95, 103, 140, 0.08);
  --shadow-float: 0 18px 40px rgba(95, 103, 140, 0.12);
  --hero-bg: linear-gradient(135deg, #edf3ff 0%, #eef0ff 45%, #d9ebff 100%);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --font: "PingFang SC", "Helvetica Neue", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --nav-height: 76px;
  --showcase-gap: clamp(18px, 2.4dvh, 34px);
  --showcase-bottom: clamp(24px, 4dvh, 56px);
  --showcase-inline: 40px;
  --mockup-max-height: 717px;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.5;
}

/* ===== Page wrapper ===== */
.page {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background:
    linear-gradient(180deg, #ffffff 0%, #ffffff 54%, #f6f8fc 82%, #edf1f8 100%);
}
/* 首页保持满屏不滚动 */
body.page-home { overflow: hidden; }
body.page-home .page {
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
}

/* ===== Nav ===== */
.nav {
  position: relative;
  flex: 0 0 auto;
  z-index: 50;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(150%) blur(16px);
  -webkit-backdrop-filter: saturate(150%) blur(16px);
}
.nav-inner {
  max-width: 1320px;
  margin: 0 auto;
  height: var(--nav-height);
  padding: 0 40px;
  display: flex;
  align-items: center;
  gap: 28px;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  flex-shrink: 0;
}
.brand-logo {
  width: 40px; height: 40px;
  border-radius: 10px;
  object-fit: contain;
  display: block;
}
.brand-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0;
}
.brand-tag {
  margin-left: 10px;
  padding: 4px 10px;
  font-size: 12px;
  color: var(--brand);
  background: rgba(111, 92, 255, 0.08);
  border: 1px solid rgba(111, 92, 255, 0.18);
  border-radius: 999px;
  line-height: 1;
  white-space: nowrap;
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  height: 44px;
  padding: 0 24px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  appearance: none;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:disabled {
  cursor: not-allowed;
  opacity: .68;
  transform: none;
  box-shadow: none;
}
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(111, 92, 255, 0.16);
}
.btn-ghost {
  color: var(--ink);
  background: transparent;
}
.btn-ghost:hover { background: rgba(31, 34, 51, 0.04); }
.btn-primary {
  color: #fff;
  background: var(--brand);
  border-color: var(--brand);
  box-shadow: none;
}
.btn-primary:hover {
  background: #5d4cf0;
  border-color: #5d4cf0;
  box-shadow: 0 8px 18px rgba(111, 92, 255, 0.18);
}
.btn-outline {
  color: var(--ink);
  background: #fff;
  border-color: rgba(95, 103, 140, 0.18);
  box-shadow: none;
}
.btn-outline:hover {
  color: var(--brand);
  background: rgba(111, 92, 255, 0.04);
  border-color: rgba(111, 92, 255, 0.38);
}
.btn-lg {
  height: 48px;
  padding: 0 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 8px;
}
.back-link {
  color: var(--ink-2);
  background: transparent;
}
.back-link:hover {
  color: var(--ink);
  background: rgba(31, 34, 51, 0.04);
  border-color: rgba(95, 103, 140, 0.16);
}

/* 首页隐藏返回链接；预约页隐藏右上角预约按钮 */
body.page-home .back-link { display: none; }
body.page-booking .nav .btn-primary { display: none; }

/* ===== Hero ===== */
.hero {
  position: relative;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(36px, 4.8dvh, 56px) 32px clamp(18px, 2.4dvh, 28px);
  text-align: center;
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: #fff;
  border: 1px solid rgba(95, 103, 140, 0.14);
  border-radius: 999px;
  color: var(--ink-2);
  font-size: 12px;
  box-shadow: 0 10px 28px rgba(95, 103, 140, 0.08);
}
.pill .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 4px rgba(111, 92, 255, 0.15);
}
.pill b { color: var(--ink); font-weight: 600; letter-spacing: 0; }

.hero h1 {
  max-width: 980px;
  margin: clamp(16px, 2dvh, 24px) auto clamp(10px, 1.4dvh, 16px);
  font-size: 64px;
  line-height: 1.08;
  letter-spacing: 0;
  font-weight: 800;
  color: var(--ink);
}
.grad {
  background: linear-gradient(135deg, #6f5cff 0%, #4ab6ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.sub {
  max-width: 780px;
  margin: 0 auto;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.7;
}
.cta {
  margin: clamp(18px, 2.4dvh, 28px) 0 clamp(10px, 1.5dvh, 18px);
  display: flex;
  justify-content: center;
  gap: 16px;
}
.trust {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  color: var(--ink-2);
  font-size: 14px;
}
.avatar-stack {
  display: inline-flex;
  align-items: center;
  padding-left: 10px;
}
.avatar-stack i {
  width: 34px;
  height: 34px;
  margin-left: -10px;
  border: 2px solid #fff;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-style: normal;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(95, 103, 140, 0.14);
}
.avatar-stack i:nth-child(1) { background: #6f5cff; }
.avatar-stack i:nth-child(2) { background: #4ab6ff; }
.avatar-stack i:nth-child(3) { background: #5ec4a8; }
.avatar-stack i:nth-child(4) { background: #f4b24e; }
.stars {
  color: #f4a13b;
  font-size: 18px;
  letter-spacing: 0;
  line-height: 1;
}

/* ===== Showcase ===== */
.showcase {
  position: relative;
  width: 100%;
  max-width: 1320px;
  margin: var(--showcase-gap) auto 0;
  padding: 0 var(--showcase-inline) var(--showcase-bottom);
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
}
.mockup {
  position: relative;
  margin: 0 auto;
  width: auto;
  height: min(100%, var(--mockup-max-height), calc((100vw - (var(--showcase-inline) * 2)) * 0.6286));
  max-width: 1140px;
  background: linear-gradient(180deg, #ffffff 0%, #fbfcff 100%);
  border-radius: 24px 24px 0 0;
  border: 1px solid var(--line);
  box-shadow: 0 36px 100px rgba(31, 34, 51, 0.12);
  overflow: hidden;
  aspect-ratio: 1252 / 787;
}
.mockup-body {
  background: #fff;
  overflow: hidden;
  height: 100%;
}
.mockup-shot {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: top center;
}
.beian {
  position: fixed;
  left: 50%;
  bottom: 8px;
  z-index: 60;
  transform: translateX(-50%);
  color: rgba(110, 115, 140, 0.72);
  font-size: 12px;
  line-height: 1.3;
  text-decoration: none;
  white-space: nowrap;
}
.beian:hover { color: var(--ink-2); }

/* ===== Demo form & Download ===== */
.demo,
.download {
  flex: 1 1 auto;
  min-height: 0;
  padding: clamp(48px, 8dvh, 96px) 56px 72px;
  overflow-y: auto;
  display: flex;
  align-items: center;
  justify-content: center;
}
.demo-layout {
  width: min(100%, 1220px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(400px, 460px);
  gap: clamp(64px, 8vw, 116px);
  align-items: center;
}
.demo-copy {
  min-width: 0;
  transform: translateY(clamp(-72px, -5dvh, -44px));
}
.demo-kicker {
  margin: 0 0 18px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
}
.demo-copy h2 {
  max-width: 680px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(46px, 4.2vw, 62px);
  line-height: 1.08;
  letter-spacing: 0;
}
.demo-copy p {
  max-width: 620px;
  margin: 28px 0 0;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.8;
}
.demo-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 680px;
  margin-top: 44px;
}
.demo-point {
  min-height: 112px;
  padding: 22px 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: var(--shadow-card);
}
.demo-point b {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 15px;
}
.demo-point span {
  color: var(--ink-2);
  font-size: 12px;
  line-height: 1.6;
}
.demo-panel {
  width: 100%;
  min-height: 640px;
  padding: 32px;
  border: 1px solid rgba(95, 103, 140, 0.12);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 28px 80px rgba(95, 103, 140, 0.14);
  backdrop-filter: blur(18px);
  overflow: hidden;
}
.demo-panel h3 {
  margin: 0;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.25;
}
.demo-panel .hint {
  margin: 10px 0 28px;
  color: var(--ink-2);
  font-size: 13px;
}
.form-grid {
  display: grid;
  gap: 18px;
}
.field {
  display: grid;
  gap: 8px;
}
.field label {
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
}
.field input,
.field select {
  width: 100%;
  height: 50px;
  padding: 0 16px;
  color: var(--ink);
  font: inherit;
  border: 1px solid rgba(95, 103, 140, 0.16);
  border-radius: 12px;
  background: #fff;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field input:focus,
.field select:focus {
  border-color: rgba(111, 92, 255, 0.56);
  box-shadow: 0 0 0 4px rgba(111, 92, 255, 0.10);
}
.privacy {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--ink-2);
  font-size: 12px;
  line-height: 1.6;
}
.privacy input {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  accent-color: var(--brand);
  flex: 0 0 auto;
}
.privacy a {
  color: var(--brand);
  text-decoration: none;
}
.privacy a:hover { text-decoration: underline; }
.form-error {
  min-height: 18px;
  color: #d84c4c;
  font-size: 12px;
}
.submit-btn {
  width: 100%;
  height: 54px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 8px;
}
.success-panel {
  display: none;
  min-height: 576px;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.demo-panel.is-success .demo-form-content {
  display: none;
}
.demo-panel.is-success .success-panel {
  display: flex;
  animation: successIn .42s ease both;
}
.success-content {
  width: 100%;
  padding: 18px 0 4px;
}
.success-icon {
  position: relative;
  width: 88px;
  height: 88px;
  margin: 0 auto 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6f5cff 0%, #4ab6ff 100%);
  box-shadow: 0 22px 54px rgba(111, 92, 255, 0.26);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 42px;
  font-weight: 800;
}
.success-icon::before,
.success-icon::after {
  content: "";
  position: absolute;
  inset: -10px;
  border-radius: inherit;
  border: 1px solid rgba(111, 92, 255, 0.22);
  animation: successPulse 1.8s ease-out infinite;
}
.success-icon::after {
  inset: -22px;
  animation-delay: .35s;
}
.success-panel h3 {
  margin: 0;
  color: var(--ink);
  font-size: 28px;
  line-height: 1.25;
}
.success-panel p {
  max-width: 340px;
  margin: 14px auto 0;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.8;
}
.success-next {
  display: grid;
  gap: 10px;
  margin: 34px auto 0;
  padding: 18px;
  max-width: 360px;
  border: 1px solid rgba(95, 103, 140, 0.10);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(111, 92, 255, 0.07), rgba(74, 182, 255, 0.07));
  text-align: left;
}
.success-next span {
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}
.success-next small {
  color: var(--ink-2);
  font-size: 12px;
  line-height: 1.7;
}
.download-layout {
  width: min(100%, 1040px);
  display: grid;
  gap: 34px;
}
.download-head {
  max-width: 720px;
  text-align: center;
  margin: 0 auto;
}
.download-kicker {
  margin: 0 0 14px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
}
.download-head h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(42px, 4.6vw, 62px);
  line-height: 1.08;
  letter-spacing: 0;
}
.download-head p {
  max-width: 620px;
  margin: 18px auto 0;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.8;
}
.os-tabs {
  display: inline-flex;
  margin: 30px auto 0;
  padding: 4px;
  border: 1px solid rgba(95, 103, 140, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 10px 28px rgba(95, 103, 140, 0.08);
  gap: 4px;
}
.os-tab {
  appearance: none;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 11px 26px;
  cursor: pointer;
  transition: color .2s ease, background .2s ease, box-shadow .2s ease;
  white-space: nowrap;
}
.os-tab:hover { color: var(--ink); }
.os-tab.is-active {
  color: #fff;
  background: var(--brand);
  box-shadow: 0 8px 18px rgba(111, 92, 255, 0.22);
}
.os-tab:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(111, 92, 255, 0.16);
}

.download-panels {
  display: flex;
  justify-content: center;
}
.download-panel {
  width: 100%;
  max-width: 520px;
}
.download-panel[hidden] { display: none; }
.download-card {
  min-height: 292px;
  padding: 28px;
  border: 1px solid rgba(95, 103, 140, 0.12);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 24px 70px rgba(95, 103, 140, 0.12);
  backdrop-filter: blur(18px);
  display: flex;
  flex-direction: column;
}
.download-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(135deg, #6f5cff, #4ab6ff);
  box-shadow: 0 16px 34px rgba(111, 92, 255, 0.18);
}
.download-card h3 {
  margin: 22px 0 8px;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.25;
}
.download-card p {
  margin: 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.8;
}
.download-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 24px;
}
.download-meta span {
  padding: 5px 10px;
  border: 1px solid rgba(95, 103, 140, 0.12);
  border-radius: 999px;
  color: var(--ink-2);
  background: rgba(255, 255, 255, 0.72);
  font-size: 12px;
  line-height: 1;
}
.download-card .btn {
  width: 100%;
  margin-top: auto;
  height: auto;
  min-height: 48px;
  padding: 9px 16px;
}
.download-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: auto;
}
.download-actions .btn {
  margin-top: 0;
}
.btn-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  line-height: 1.2;
}
.btn-stack-title {
  font-size: 15px;
  font-weight: 700;
}
.btn-stack-sub {
  font-size: 11px;
  font-weight: 400;
  opacity: .8;
}
.download-card .btn.is-recommended {
  position: relative;
  border-color: #fff;
  box-shadow: 0 0 0 2px rgba(255,255,255,0.9), 0 10px 24px rgba(111, 92, 255, 0.35);
}
.download-card .btn.is-recommended::after {
  content: "当前 Windows";
  position: absolute;
  top: -11px;
  right: 8px;
  padding: 3px 10px;
  border-radius: 999px;
  background: #fff;
  color: var(--brand);
  font-size: 10px;
  font-weight: 700;
  line-height: 1.4;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(111, 92, 255, 0.25);
}
.download[data-current-os="mac"] .download-card .btn.is-recommended::after {
  content: "当前 Mac";
}
.download-card .btn.is-dimmed {
  opacity: .55;
}
@keyframes successIn {
  from {
    opacity: 0;
    transform: translateY(16px) scale(.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
@keyframes successPulse {
  from {
    opacity: .72;
    transform: scale(.84);
  }
  to {
    opacity: 0;
    transform: scale(1.18);
  }
}

/* ===== Floating cards ===== */
.float {
  position: absolute;
  --rotate: 0deg;
  width: 116px;
  min-height: 106px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 22px 48px rgba(95, 103, 140, 0.13);
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  font-size: 12px;
  color: var(--ink);
  z-index: 5;
  backdrop-filter: blur(10px);
  transform: rotate(var(--rotate));
}
.float .ic {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
}
.float .meta b { display: block; font-weight: 700; font-size: 12px; }
.float .meta span { color: var(--ink-2); font-size: 10.5px; }

@keyframes floaty {
  0%, 100% { transform: translateY(0) rotate(var(--rotate)); }
  50%      { transform: translateY(-7px) rotate(var(--rotate)); }
}
.float {
  animation: floaty 4.5s ease-in-out infinite;
  will-change: transform;
}

.float-1 { top: -74px; left: 116px; --rotate: -14deg; animation-delay: 0s; }
.float-1 .ic { background: linear-gradient(135deg, #6f5cff, #4ab6ff); }
.float-2 { top: -80px; right: 132px; --rotate: 13deg; animation-delay: 0.6s; animation-duration: 5s; }
.float-2 .ic { background: linear-gradient(135deg, #4ab6ff, #7fd6ff); }
.float-3 { top: 170px; left: -10px; --rotate: -16deg; animation-delay: 1.4s; animation-duration: 5.2s; }
.float-3 .ic { background: linear-gradient(135deg, #7b74ff, #b8a8ff); }
.float-4 { top: 138px; right: -4px; --rotate: 15deg; animation-delay: 2.1s; animation-duration: 4.8s; }
.float-4 .ic { background: linear-gradient(135deg, #5ec4a8, #87dec6); }
.float-5 { display: none; }
.float-5 .ic { background: linear-gradient(135deg, #f4b24e, #ffd28a); }

@media (prefers-reduced-motion: reduce) {
  .float { animation: none; }
  .demo-panel.is-success .success-panel,
  .success-icon::before,
  .success-icon::after {
    animation: none;
  }
}

/* ===== Responsive ===== */
@media (min-width: 861px) and (max-height: 1200px) {
  :root {
    --showcase-gap: 24px;
    --showcase-bottom: 32px;
  }
  .hero { padding: 44px 32px 20px; }
  .hero h1 { margin: 20px auto 12px; font-size: 60px; }
  .cta { margin: 22px 0 12px; }
  .btn-lg { height: 46px; }
}

@media (max-width: 1080px) {
  .float-1, .float-2 { display: none; }
  .float-3 { left: 8px; }
  .float-4 { right: 8px; }
}
@media (max-width: 860px) {
  :root {
    --nav-height: 68px;
    --showcase-gap: 28px;
    --showcase-bottom: 0px;
    --showcase-inline: 24px;
  }
  .nav-inner { padding: 0 24px; }
  .hero { padding: 48px 24px 24px; }
  .hero h1 { font-size: 50px; }
  .brand-tag { display: none; }

  .float-3, .float-4, .float-5 { display: none; }
  .demo,
  .download { padding: 28px 24px 44px; }
  .demo {
    align-items: flex-start;
  }
  .download {
    align-items: flex-start;
  }
  .demo-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .demo-copy {
    text-align: center;
    transform: none;
  }
  .demo-copy h2 {
    font-size: 36px;
  }
  .demo-copy p {
    margin-left: auto;
    margin-right: auto;
  }
  .demo-points {
    display: none;
  }
  .demo-panel {
    max-width: 520px;
    margin: 0 auto;
    min-height: auto;
  }
  .download-head h2 { font-size: 38px; }
  .success-panel { min-height: 500px; }
}
@media (max-width: 600px) {
  :root {
    --showcase-gap: 22px;
    --showcase-inline: 16px;
  }
  .brand-name { font-size: 18px; }
  .brand-logo { width: 34px; height: 34px; }
  .hero { padding: 34px 18px 20px; }
  .hero h1 { font-size: 36px; line-height: 1.16; }
  .hero p.sub { font-size: 14px; line-height: 1.7; }
  .cta { flex-direction: column; align-items: stretch; width: 100%; padding: 0 20px; margin: 16px 0 12px; }
  .nav-inner { padding: 0 16px; }
  .trust { font-size: 12px; }
  .stars { font-size: 15px; }
  .avatar-stack i { width: 30px; height: 30px; }
  .demo,
  .download { padding: 20px 16px 38px; }
  .demo-layout { gap: 18px; }
  .demo-copy h2 { font-size: 28px; }
  .demo-copy p { margin-top: 12px; font-size: 13px; line-height: 1.7; }
  .download-layout { gap: 22px; }
  .download-head h2 { font-size: 30px; }
  .download-head p { font-size: 13px; line-height: 1.7; }
  .download-card { min-height: 260px; padding: 22px; border-radius: 18px; }
  .download-card h3 { font-size: 21px; }
  .demo-panel { padding: 20px; border-radius: 20px; }
  .success-panel { min-height: 440px; }
  .success-icon { width: 76px; height: 76px; margin-bottom: 24px; font-size: 36px; }
  .success-panel h3 { font-size: 24px; }
  .success-panel p { font-size: 14px; }
  .demo-panel h3 { font-size: 20px; }
  .demo-panel .hint { margin-bottom: 16px; }
  .form-grid { gap: 12px; }
  .field input,
  .field select { height: 42px; }
}