:root {
  --canvas: #e8eeeb;
  --canvas-soft: #dfe7e3;
  --surface: #f8fbf9;
  --surface-strong: #ffffff;
  --ink: #101713;
  --body: #45514b;
  --muted: #6f7b75;
  --border: #cbd7d1;
  --primary: #0a8f5a;
  --primary-dark: #06613e;
  --primary-soft: #e6f6ee;
  --data-blue: #276ef1;
  --data-blue-soft: #eaf0ff;
  --accent-cyan: #47c9e8;
  --warm: #e59b24;
  --warm-soft: #fff4dc;
  --shadow-sm: 0 5px 16px rgba(16, 23, 19, 0.08);
  --shadow-md: 0 12px 28px rgba(16, 23, 19, 0.12);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --max-width: 1200px;
  --font-sans: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --transition-fast: 160ms ease;
  --transition-base: 280ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
}

body {
  min-width: 320px;
  color: var(--ink);
  background: #fff;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

:focus-visible {
  outline: 3px solid rgba(39, 110, 241, 0.5);
  outline-offset: 3px;
}

::selection {
  color: var(--ink);
  background: var(--warm-soft);
}

.page-wrapper {
  min-height: 100vh;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid transparent;
  background: var(--canvas);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.site-header.scrolled,
.site-header.menu-visible {
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.navbar {
  display: flex;
  min-height: 70px;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.navbar-brand {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  flex: 0 0 auto;
}

.terminal-wordmark {
  display: inline-flex;
  width: 188px;
  min-height: 48px;
  align-items: center;
  gap: 0;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  color: #f8faf8;
  background: #0d1410;
  box-shadow: 0 5px 13px rgba(16, 21, 18, 0.16);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.035em;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.terminal-prompt {
  margin-right: 8px;
  color: #f8faf8;
  font-size: 20px;
  font-weight: 800;
}

.terminal-text {
  white-space: nowrap;
}

.terminal-cursor {
  width: 9px;
  height: 18px;
  flex: 0 0 auto;
  border-radius: 1px;
  background: #f8faf8;
  animation: terminal-cursor-blink 1s steps(1, end) infinite;
}

@keyframes terminal-cursor-blink {
  0%,
  48% {
    opacity: 1;
  }

  49%,
  100% {
    opacity: 0;
  }
}

.navbar-brand:hover .terminal-wordmark {
  background: #121c16;
  box-shadow: 0 7px 16px rgba(16, 21, 18, 0.2);
  transform: translateY(-1px);
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--body);
  font-size: 15px;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.nav-link::after {
  position: absolute;
  right: 0;
  bottom: 5px;
  left: 0;
  height: 2px;
  background: var(--primary);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--ink);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.hamburger {
  display: none;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  position: absolute;
  top: 100%;
  right: 0;
  left: 0;
  max-height: 0;
  border-bottom: 1px solid transparent;
  background: var(--surface);
  opacity: 0;
  overflow: hidden;
  visibility: hidden;
  transition: max-height var(--transition-base), opacity var(--transition-fast), border-color var(--transition-fast), visibility var(--transition-fast);
}

.mobile-nav.active {
  max-height: 260px;
  border-color: var(--border);
  opacity: 1;
  visibility: visible;
}

.mobile-nav-inner {
  display: grid;
  padding-block: 10px 18px;
}

.mobile-nav-link {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  color: var(--body);
  font-weight: 650;
}

.mobile-nav-link:last-child {
  border-bottom: 0;
}

.mobile-nav-link.active {
  color: var(--primary-dark);
}

.mobile-nav-link.active::after {
  color: var(--primary);
  content: "当前";
  font-size: 12px;
}

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.35;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 8px 18px rgba(15, 138, 99, 0.16);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 10px 22px rgba(15, 138, 99, 0.2);
}

.btn-secondary {
  color: var(--ink);
  border-color: var(--border);
  background: var(--surface);
}

.btn-secondary:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.btn-light {
  color: var(--primary-dark);
  background: #fff;
}

.btn-light:hover {
  background: var(--warm-soft);
}

.text-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 8px;
  color: var(--primary-dark);
  font-weight: 750;
  transition: gap var(--transition-fast), color var(--transition-fast);
}

.text-link:hover {
  gap: 12px;
  color: var(--primary);
}

.text-link-light {
  color: #fff;
}

.text-link-light:hover {
  color: var(--warm-soft);
}

.eyebrow {
  margin-bottom: 12px;
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.eyebrow-light {
  color: var(--warm-soft);
}

.section {
  padding: 88px 0;
}

.section-heading {
  width: min(100%, 680px);
  margin: 0 auto 48px;
  text-align: center;
}

.section-heading-left {
  margin-left: 0;
  text-align: left;
}

.section-heading h2,
.story-preview-copy h2,
.principle-copy h2,
.follow-copy h2,
.about-product-card h2 {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 750;
  line-height: 1.18;
  letter-spacing: -0.025em;
}

.section-heading > p:last-child {
  margin-top: 14px;
  color: var(--body);
  font-size: 17px;
  line-height: 1.75;
}

.home-hero {
  display: flex;
  min-height: calc(100svh - 86px);
  align-items: center;
  padding: 28px 0 38px;
}

.home-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  align-items: center;
  gap: clamp(48px, 7vw, 92px);
}

.hero-photo-card {
  width: min(100%, 420px);
  justify-self: center;
}

.hero-photo {
  display: block;
  width: 100%;
  height: auto;
}

.home-hero-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: flex-start;
}

.hero-title {
  margin-bottom: 22px;
  font-size: clamp(48px, 5.3vw, 68px);
  font-weight: 770;
  line-height: 1.06;
  letter-spacing: -0.045em;
}

.hero-subtitle {
  max-width: 590px;
  color: var(--body);
  font-size: clamp(17px, 1.55vw, 20px);
  line-height: 1.78;
}

.identity-tags,
.about-keywords,
.product-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.identity-tags li,
.about-keywords span,
.product-points li {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--body);
  background: var(--surface);
  font-size: 13px;
  font-weight: 700;
}

.identity-tags li:nth-child(1) {
  color: var(--primary-dark);
  border-color: rgba(15, 138, 99, 0.2);
  background: var(--primary-soft);
}

.identity-tags li:nth-child(2) {
  color: #1e4fb0;
  border-color: rgba(37, 99, 235, 0.2);
  background: var(--data-blue-soft);
}

.identity-tags li:nth-child(3) {
  color: #9a5403;
  border-color: rgba(217, 119, 6, 0.2);
  background: var(--warm-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.topics-section {
  border-block: 1px solid var(--border);
  background: var(--canvas-soft);
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 20px;
}

.topic-card {
  position: relative;
  height: 100%;
  min-height: 286px;
  padding: 26px;
  border: 1px solid #bfd7ee;
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: 0 10px 24px rgba(39, 110, 241, 0.08);
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.topic-card:hover {
  border-color: #8eb9e2;
  box-shadow: 0 14px 30px rgba(39, 110, 241, 0.13);
  transform: translateY(-3px);
}

.topic-number {
  position: absolute;
  top: 22px;
  right: 22px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.topic-icon {
  display: grid;
  width: 48px;
  height: 48px;
  margin-bottom: 34px;
  place-items: center;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 22px;
  font-weight: 800;
}

.topic-icon.is-sky {
  color: #1769aa;
  border-color: rgba(71, 160, 232, 0.24);
  background: #eef7ff;
}

.topic-icon.is-blue {
  color: var(--data-blue);
  border-color: rgba(37, 99, 235, 0.18);
  background: var(--data-blue-soft);
}

.topic-icon.is-warm {
  color: var(--warm);
  border-color: rgba(217, 119, 6, 0.18);
  background: var(--warm-soft);
}

.topic-card .topic-icon {
  background: rgba(255, 255, 255, 0.72);
}

.topic-card h3 {
  margin-bottom: 10px;
  font-size: 23px;
  line-height: 1.25;
}

.topic-card p {
  color: var(--body);
  font-size: 16px;
  line-height: 1.72;
}

.story-preview-section {
  background: var(--canvas);
}

.story-preview-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(380px, 0.7fr);
  align-items: center;
  gap: clamp(48px, 8vw, 104px);
}

.story-preview-copy > p:not(.eyebrow) {
  margin-top: 18px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.88;
}

.story-preview-copy .text-link {
  margin-top: 22px;
}

.story-steps {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  overflow: hidden;
}

.story-steps article {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 16px;
  padding: 22px;
  border-bottom: 1px solid var(--border);
}

.story-steps article:last-child {
  border-bottom: 0;
}

.story-steps article > span {
  display: grid;
  height: 38px;
  place-items: center;
  border-radius: var(--radius-sm);
  color: var(--primary-dark);
  background: var(--primary-soft);
  font-size: 12px;
  font-weight: 800;
}

.story-steps h3 {
  margin-bottom: 4px;
  font-size: 17px;
}

.story-steps p {
  color: var(--body);
  font-size: 14px;
}

.signature-section {
  padding-top: 34px;
  background: var(--canvas);
}

.signature-card {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(420px, 0.8fr);
  align-items: center;
  gap: clamp(40px, 6vw, 78px);
  padding: clamp(34px, 5vw, 60px);
  border-radius: var(--radius-lg);
  color: #fff;
  background: var(--ink);
  overflow: hidden;
}

.signature-copy h2 {
  margin-bottom: 14px;
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.signature-copy > p:not(.eyebrow) {
  color: #dce4de;
  line-height: 1.82;
}

.signature-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-top: 26px;
}

.product-sketch {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--ink);
  background: var(--surface-strong);
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.22);
  transform: rotate(1.5deg);
  overflow: hidden;
}

.product-sketch-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--canvas);
}

.product-sketch-bar > span,
.window-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #d1d5db;
}

.product-sketch-bar > span:nth-child(1),
.window-dots span:nth-child(1) {
  background: #f87171;
}

.product-sketch-bar > span:nth-child(2),
.window-dots span:nth-child(2) {
  background: #fbbf24;
}

.product-sketch-bar > span:nth-child(3),
.window-dots span:nth-child(3) {
  background: #34d399;
}

.product-sketch-bar em {
  margin-left: auto;
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
  font-weight: 700;
}

.product-sketch-body {
  display: grid;
  gap: 14px;
  padding: 18px;
}

.sketch-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sketch-summary strong {
  font-size: 16px;
}

.sketch-summary span {
  padding: 4px 7px;
  border-radius: var(--radius-sm);
  color: var(--primary-dark);
  background: var(--primary-soft);
  font-size: 11px;
  font-weight: 800;
}

.sketch-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.sketch-grid span {
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--body);
  font-size: 12px;
  font-weight: 700;
}

.sketch-grid i {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 5px;
  border-radius: 50%;
}

.sketch-grid i.is-blue {
  background: var(--data-blue);
}

.sketch-grid i.is-warm {
  background: var(--warm);
}

.sketch-grid i.is-green {
  background: var(--primary);
}

.sketch-chart {
  display: grid;
  height: 92px;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  align-items: end;
  gap: 7px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--canvas);
}

.sketch-chart i,
.demo-chart i {
  display: block;
  min-height: 16px;
  border-radius: 3px 3px 0 0;
  background: var(--primary);
}

.sketch-chart i:nth-child(1) { height: 28%; }
.sketch-chart i:nth-child(2) { height: 48%; }
.sketch-chart i:nth-child(3) { height: 38%; }
.sketch-chart i:nth-child(4) { height: 62%; }
.sketch-chart i:nth-child(5) { height: 55%; }
.sketch-chart i:nth-child(6) { height: 78%; }
.sketch-chart i:nth-child(7) { height: 70%; }

.follow-section {
  background: var(--canvas);
}

.follow-card {
  display: grid;
  max-width: 920px;
  grid-template-columns: 236px minmax(0, 1fr);
  align-items: center;
  gap: clamp(34px, 6vw, 72px);
  margin: 0 auto;
  padding: clamp(28px, 4vw, 44px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.qr-frame {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #fff;
}

.qr-frame img {
  width: 100%;
}

.follow-copy > p:not(.eyebrow) {
  max-width: 550px;
  margin-top: 14px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.8;
}

.copy-account {
  margin-top: 22px;
}

.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  z-index: 2000;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--ink);
  background: var(--surface-strong);
  box-shadow: var(--shadow-md);
  font-size: 14px;
  font-weight: 700;
  opacity: 0;
  transform: translate(-50%, -18px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.footer {
  border-top: 1px solid var(--border);
  background: var(--canvas-soft);
}

.footer-content {
  display: grid;
  min-height: 118px;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 30px;
  color: var(--muted);
  font-size: 13px;
}

.footer-brand {
  color: var(--ink);
  font-size: 16px;
  font-weight: 750;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
}

.footer-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary-dark);
}

.about-hero {
  padding: 56px 0 76px;
}

.about-hero-grid {
  display: grid;
  grid-template-columns: minmax(360px, 0.78fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(48px, 7vw, 92px);
}

.about-photo-card {
  position: relative;
  padding: 12px 12px 46px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-md);
  transform: rotate(-1deg);
}

.about-photo-card img {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.about-photo-card figcaption {
  position: absolute;
  right: 18px;
  bottom: 11px;
  left: 18px;
  color: var(--body);
  font-size: 13px;
  font-weight: 650;
  text-align: center;
}

.about-title {
  font-size: clamp(42px, 5vw, 62px);
  font-weight: 760;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.about-lead {
  max-width: 660px;
  margin-top: 22px;
  color: var(--body);
  font-size: 18px;
  line-height: 1.86;
}

.about-keywords span:nth-child(1) {
  color: var(--primary-dark);
  background: var(--primary-soft);
}

.about-keywords span:nth-child(2) {
  color: #1e4fb0;
  background: var(--data-blue-soft);
}

.about-keywords span:nth-child(3) {
  color: #9a5403;
  background: var(--warm-soft);
}

.journey-section {
  border-block: 1px solid var(--border);
  background: var(--canvas-soft);
}

.journey-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
  gap: 20px;
}

.journey-card {
  min-height: 330px;
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.journey-card-featured {
  margin-top: 22px;
  border-color: rgba(15, 138, 99, 0.38);
  box-shadow: var(--shadow-sm);
}

.journey-marker {
  display: grid;
  width: 42px;
  height: 42px;
  margin-bottom: 36px;
  place-items: center;
  border-radius: var(--radius-sm);
  color: var(--primary-dark);
  background: var(--primary-soft);
  font-size: 12px;
  font-weight: 850;
}

.journey-label {
  margin-bottom: 8px;
  color: var(--warm);
  font-size: 13px;
  font-weight: 800;
}

.journey-card h3 {
  margin-bottom: 12px;
  font-size: 22px;
}

.journey-card > p:last-child {
  color: var(--body);
  font-size: 16px;
  line-height: 1.72;
}

.principle-section {
  background: var(--canvas);
}

.principle-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(350px, 0.68fr);
  align-items: center;
  gap: clamp(50px, 8vw, 100px);
}

.principle-copy > p:not(.eyebrow) {
  margin-top: 20px;
  color: var(--body);
  font-size: 17px;
  line-height: 1.75;
}

.principle-copy blockquote {
  margin-top: 26px;
  padding: 18px 20px;
  border-left: 3px solid var(--warm);
  color: var(--ink);
  background: var(--warm-soft);
  font-size: 17px;
  font-weight: 650;
  line-height: 1.75;
}

.principle-list {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  overflow: hidden;
}

.principle-list article {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  padding: 22px;
  border-bottom: 1px solid var(--border);
}

.principle-list article:last-child {
  border-bottom: 0;
}

.principle-list article > span {
  color: var(--primary);
  font-size: 13px;
  font-weight: 850;
}

.principle-list h3 {
  margin-bottom: 3px;
  font-size: 17px;
}

.principle-list p {
  color: var(--body);
  font-size: 15px;
  line-height: 1.65;
}

.about-product-section {
  padding-top: 30px;
}

.about-product-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  padding: 36px 40px;
  border: 1px solid rgba(15, 138, 99, 0.24);
  border-radius: var(--radius-lg);
  background: var(--primary-soft);
}

.about-product-card h2 {
  max-width: 720px;
  font-size: clamp(27px, 3.5vw, 38px);
}

.about-product-card > div > p:last-child {
  margin-top: 10px;
  color: var(--body);
}

.follow-section-compact {
  padding-top: 30px;
}

.product-page {
  background: var(--canvas);
}

.product-page-wrapper {
  display: flex;
  min-height: 100svh;
  flex-direction: column;
}

.product-main {
  display: flex;
  flex: 1;
}

.product-hero {
  display: flex;
  width: 100%;
  min-height: 610px;
  align-items: center;
  padding: 42px 0 52px;
}

.product-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(460px, 0.88fr);
  align-items: center;
  gap: clamp(44px, 6vw, 76px);
}

.product-title {
  font-size: clamp(46px, 5.5vw, 70px);
  font-weight: 760;
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.product-title span {
  color: var(--primary);
}

.product-lead {
  max-width: 590px;
  margin-top: 22px;
  color: var(--body);
  font-size: 18px;
  line-height: 1.82;
}

.product-points li {
  color: var(--primary-dark);
  border-color: rgba(15, 138, 99, 0.18);
  background: var(--primary-soft);
}

.btn-product {
  padding-inline: 24px;
}

.product-origin {
  margin-top: 16px;
  color: var(--muted);
  font-size: 13px;
}

.product-demo {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface-strong);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.product-demo-toolbar {
  display: flex;
  min-height: 46px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--canvas-soft);
}

.window-dots {
  display: flex;
  gap: 6px;
}

.product-demo-toolbar strong {
  color: var(--body);
  font-size: 12px;
}

.product-demo-body {
  display: grid;
  gap: 12px;
  padding: 14px;
}

.demo-product-row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.demo-product-icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: var(--radius-md);
  color: #fff;
  background: var(--primary);
  font-size: 12px;
  font-weight: 850;
}

.demo-product-row small,
.demo-metrics small,
.demo-chart-panel small {
  display: block;
  color: var(--muted);
  font-size: 11px;
}

.demo-product-row strong {
  display: block;
  margin-top: 2px;
  font-size: 14px;
  line-height: 1.4;
}

.demo-product-row em {
  padding: 5px 7px;
  border-radius: var(--radius-sm);
  color: var(--primary-dark);
  background: var(--primary-soft);
  font-size: 11px;
  font-style: normal;
  font-weight: 800;
}

.demo-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.demo-metrics article {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.demo-metrics strong {
  display: block;
  margin: 4px 0;
  color: var(--primary-dark);
  font-size: 16px;
}

.demo-metrics span {
  color: var(--body);
  font-size: 11px;
}

.demo-insights {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: 10px;
}

.demo-chart-panel,
.demo-ai-panel {
  padding: 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.demo-chart-panel strong {
  font-size: 13px;
}

.demo-chart {
  display: grid;
  height: 84px;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  align-items: end;
  gap: 6px;
  margin-top: 10px;
  padding: 9px;
  border-radius: var(--radius-sm);
  background: var(--canvas-soft);
}

.demo-chart i {
  background: var(--data-blue);
}

.demo-chart i:nth-child(1) { height: 30%; }
.demo-chart i:nth-child(2) { height: 50%; }
.demo-chart i:nth-child(3) { height: 43%; }
.demo-chart i:nth-child(4) { height: 66%; }
.demo-chart i:nth-child(5) { height: 56%; }
.demo-chart i:nth-child(6) { height: 82%; }
.demo-chart i:nth-child(7) { height: 70%; }
.demo-chart i:nth-child(8) { height: 90%; }

.demo-ai-panel {
  border-left: 3px solid var(--primary);
}

.demo-ai-panel > span {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 7px;
  border-radius: var(--radius-sm);
  color: var(--primary-dark);
  background: var(--primary-soft);
  font-size: 10px;
  font-weight: 850;
}

.demo-ai-panel strong {
  display: block;
  font-size: 14px;
  line-height: 1.45;
}

.demo-ai-panel p {
  margin-top: 7px;
  color: var(--body);
  font-size: 11px;
  line-height: 1.6;
}

.product-footer .footer-content {
  min-height: 92px;
}

.fade-in {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 560ms ease, transform 560ms ease;
}

.js-animations .fade-in:not(.visible) {
  opacity: 0;
  transform: translateY(18px);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 80ms; }
.fade-in-delay-2 { transition-delay: 160ms; }
.fade-in-delay-3 { transition-delay: 240ms; }

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

  .hamburger {
    display: flex;
  }

  .home-hero {
    min-height: auto;
    padding: 40px 0 64px;
  }

  .home-hero-grid,
  .about-hero-grid,
  .product-hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 36px;
  }

  .hero-photo-card {
    width: min(100%, 380px);
  }

  .hero-title {
    font-size: clamp(42px, 6.5vw, 56px);
  }

  .topic-grid,
  .journey-grid {
    gap: 14px;
  }

  .topic-card,
  .journey-card {
    padding: 22px;
  }

  .story-preview-grid,
  .principle-grid {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
    gap: 42px;
  }

  .signature-card {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-content {
    grid-template-columns: 1fr auto;
    padding-block: 20px;
  }

  .footer-links {
    grid-row: 2;
    grid-column: 1 / -1;
    justify-content: flex-start;
  }

  .product-hero {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100% - 32px, var(--max-width));
  }

  .navbar {
    min-height: 64px;
  }

  .terminal-wordmark {
    width: 178px;
    min-height: 44px;
    padding-inline: 10px;
    font-size: 16px;
  }

  .terminal-prompt {
    font-size: 18px;
  }

  .terminal-cursor {
    width: 8px;
    height: 16px;
  }

  .section {
    padding: 66px 0;
  }

  .section-heading {
    margin-bottom: 32px;
    text-align: left;
  }

  .section-heading h2,
  .story-preview-copy h2,
  .principle-copy h2,
  .follow-copy h2,
  .about-product-card h2 {
    font-size: 30px;
  }

  .home-hero {
    padding: 18px 0 52px;
  }

  .home-hero-grid,
  .about-hero-grid,
  .product-hero-grid,
  .story-preview-grid,
  .principle-grid,
  .signature-card {
    grid-template-columns: 1fr;
  }

  .home-hero-grid {
    gap: 28px;
  }

  .hero-photo-card {
    width: min(100%, 290px);
  }

  .home-hero-copy .eyebrow {
    margin-bottom: 8px;
  }

  .hero-title {
    margin-bottom: 16px;
    font-size: clamp(39px, 11vw, 48px);
  }

  .hero-subtitle {
    font-size: 16px;
    line-height: 1.72;
  }

  .identity-tags {
    margin-top: 16px;
  }

  .hero-actions {
    display: grid;
    margin-top: 22px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .topic-grid,
  .journey-grid {
    grid-template-columns: 1fr;
  }

  .topic-card,
  .journey-card {
    min-height: auto;
  }

  .journey-card-featured {
    margin-top: 0;
  }

  .topic-icon {
    margin-bottom: 24px;
  }

  .story-preview-grid,
  .principle-grid {
    gap: 34px;
  }

  .story-steps article {
    grid-template-columns: 48px minmax(0, 1fr);
    padding: 18px;
  }

  .signature-section,
  .about-product-section,
  .follow-section-compact {
    padding-top: 18px;
  }

  .signature-card {
    gap: 34px;
    padding: 28px 22px;
  }

  .signature-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .product-sketch {
    transform: none;
  }

  .sketch-grid {
    grid-template-columns: 1fr;
  }

  .follow-card {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 22px;
  }

  .qr-frame {
    width: min(100%, 236px);
    margin: 0 auto;
  }

  .follow-copy {
    text-align: center;
  }

  .follow-copy > p:not(.eyebrow) {
    margin-inline: auto;
  }

  .footer-content {
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding-block: 28px;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0 18px;
  }

  .about-hero {
    padding: 28px 0 58px;
  }

  .about-hero-grid {
    gap: 36px;
  }

  .about-photo-card {
    width: min(100%, 480px);
    margin: 0 auto;
    transform: none;
  }

  .about-title {
    font-size: clamp(38px, 10.5vw, 48px);
  }

  .about-lead {
    font-size: 16px;
    line-height: 1.78;
  }

  .journey-marker {
    margin-bottom: 24px;
  }

  .principle-copy blockquote {
    font-size: 15px;
  }

  .about-product-card {
    align-items: flex-start;
    flex-direction: column;
    padding: 28px 22px;
  }

  .product-hero {
    padding: 38px 0 58px;
  }

  .product-hero-grid {
    gap: 38px;
  }

  .product-title {
    font-size: clamp(40px, 11vw, 50px);
  }

  .product-lead {
    font-size: 16px;
  }

  .demo-metrics,
  .demo-insights {
    grid-template-columns: 1fr;
  }

  .demo-product-row {
    grid-template-columns: 42px minmax(0, 1fr);
  }

  .demo-product-icon {
    width: 42px;
    height: 42px;
  }

  .demo-product-row em {
    grid-column: 2;
    justify-self: start;
  }
}

@media (max-width: 390px) {
  .hero-photo-card {
    width: min(100%, 276px);
  }

  .hero-title {
    font-size: 38px;
  }

  .identity-tags li,
  .about-keywords span,
  .product-points li {
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .terminal-cursor {
    opacity: 1;
    animation: none;
  }

  .js-animations .fade-in:not(.visible) {
    opacity: 1;
    transform: none;
  }
}

/* Homepage editorial frame */
.home-stage,
.home-stage + main,
.home-stage + main + .footer {
  --canvas: #f3f8fc;
  --canvas-soft: #edf5fc;
  --surface: #f8fbff;
  --border: #dbe7f0;
  --primary: #276ef1;
  --primary-dark: #1e56c5;
  --primary-soft: #eaf0ff;
}

.home-stage {
  width: min(calc(100% - 32px), 1440px);
  margin: 18px auto 0;
  padding-bottom: 32px;
  border: 0;
  border-radius: 18px;
  background: #f3f8fc;
  overflow: hidden;
}

.home-stage + main {
  width: min(calc(100% - 32px), 1440px);
  margin-inline: auto;
  background: #fff;
}

.home-stage + main .topics-section,
.home-stage + main .story-preview-section,
.home-stage + main .signature-section,
.home-stage + main .follow-section {
  border: 0;
  background: transparent;
}

.home-stage + main .follow-section {
  border-radius: 18px;
  background: #f3f8fc;
}

.home-stage + main .topics-section {
  padding-top: 64px;
}

.home-stage + main .story-steps {
  border-color: #dbe7f0;
  background: #fff;
}

.home-stage + main .follow-card {
  border: 0;
  background: transparent;
  box-shadow: none;
}

.follow-channel-heading {
  max-width: 680px;
  margin: 0 auto 38px;
  text-align: center;
}

.follow-channel-heading h2 {
  font-size: clamp(32px, 3.6vw, 42px);
  font-weight: 750;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.follow-channel-heading > p:not(.eyebrow) {
  margin-top: 14px;
  color: var(--body);
  font-size: 17px;
  line-height: 1.7;
}

.follow-channel-grid {
  display: grid;
  max-width: 920px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
  gap: 24px;
  margin-inline: auto;
}

.follow-channel-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  padding: 28px;
  border: 0;
  border-radius: 12px;
  background: #fff;
}

.follow-channel-card-heading {
  text-align: center;
}

.follow-channel-card-heading p {
  margin-bottom: 4px;
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.follow-channel-card-heading h3 {
  font-size: 24px;
  line-height: 1.3;
}

.channel-qr-window {
  display: grid;
  width: min(100%, 300px);
  aspect-ratio: 1;
  margin: 24px auto;
  padding: 10px;
  place-items: center;
  border: 1px solid #cbdff0;
  border-radius: 14px;
  background: #fff;
  overflow: hidden;
}

.channel-qr-window img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.channel-qr-bilibili img {
  width: 88%;
  height: 88%;
}

.follow-channel-description {
  max-width: none;
  color: var(--body);
  font-size: 15px;
  line-height: 1.7;
  text-align: center;
  white-space: nowrap;
}

.follow-channel-action {
  margin-top: auto;
  padding-top: 22px;
}

.home-stage + main + .footer {
  border-color: #dbe7f0;
  background: #fff;
}

.site-header {
  position: static;
}

.home-stage-header {
  border-bottom: 0;
  background: transparent;
}

.home-stage-header.scrolled {
  border-color: transparent;
  box-shadow: none;
}

.home-stage .container {
  width: min(100% - 112px, 1200px);
}

.home-stage .navbar {
  min-height: 120px;
  padding-top: 16px;
}

.home-stage .nav-link {
  color: var(--ink);
}

.home-stage .btn-primary {
  box-shadow: 0 8px 18px rgba(39, 110, 241, 0.18);
}

.home-stage .btn-primary:hover {
  box-shadow: 0 10px 22px rgba(39, 110, 241, 0.24);
}

.home-stage .home-hero {
  min-height: 440px;
  padding: 38px 0 68px;
}

.home-stage .home-hero-grid {
  position: relative;
  grid-template-columns: minmax(360px, 0.88fr) minmax(0, 1.12fr);
  gap: clamp(58px, 7vw, 108px);
}

.home-stage .hero-photo-card {
  width: min(100%, 420px);
}

.hero-connector {
  position: absolute;
  top: 80px;
  left: calc(40.5% - 46px);
  z-index: 3;
  width: clamp(118px, 9.4vw, 146px);
  aspect-ratio: 260 / 116;
  background: url("/assets/hero-dashed-connector.svg?v=2") center / contain no-repeat;
  pointer-events: none;
}

.home-stage .hero-title {
  margin-left: -0.1em;
  margin-bottom: 28px;
  font-family: Georgia, "Songti SC", "STSong", serif;
  font-size: clamp(54px, 5.5vw, 76px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.055em;
}

.friend-underline {
  position: relative;
  display: inline-block;
  white-space: nowrap;
}

.friend-underline::before,
.friend-underline::after {
  position: absolute;
  height: 8px;
  border-radius: 50%;
  border-top: 3px solid var(--accent-cyan);
  content: "";
}

.friend-underline::before {
  right: -6px;
  bottom: -10px;
  left: -5px;
  transform: rotate(-1deg);
}

.friend-underline::after {
  right: -2px;
  bottom: -17px;
  left: 11px;
  opacity: 0.88;
  transform: rotate(1.5deg);
}

.hello-wave {
  display: inline-block;
  margin-left: 8px;
  font-family: var(--font-sans);
  font-size: 0.72em;
  transform: rotate(8deg);
  transform-origin: 70% 80%;
}

.hero-profile-copy {
  width: 100%;
  max-width: 700px;
  margin-left: 0;
  padding-left: 0;
  color: var(--body);
  font-family: var(--font-sans);
  font-size: clamp(18px, 1.55vw, 21px);
  font-weight: 500;
  line-height: 1.75;
  letter-spacing: -0.012em;
}

.hero-profile-copy > * {
  display: block;
}

.hero-profile-copy strong {
  color: var(--ink);
  font-weight: 750;
  text-decoration-line: underline;
  text-decoration-color: var(--ink);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.hero-note {
  margin-top: 18px;
  color: var(--primary-dark);
  font-size: 15px;
  font-weight: 750;
}

.hero-note-inline {
  color: var(--primary-dark);
  font-weight: 750;
}

.featured-product {
  position: relative;
  width: min(100% - 112px, 1200px);
  margin: -28px auto 0;
  padding-top: 14px;
}

.hand-arrow {
  position: absolute;
  top: -116px;
  right: 52px;
  z-index: 2;
  width: 76px;
  aspect-ratio: 92 / 150;
  background: url("/assets/product-hand-arrow.svg?v=7") center / contain no-repeat;
  pointer-events: none;
}

.featured-product-card {
  display: grid;
  grid-template-columns: minmax(300px, 0.78fr) minmax(520px, 1.22fr);
  align-items: center;
  gap: clamp(32px, 4vw, 56px);
  padding: clamp(30px, 3vw, 40px);
  border: 0;
  border-radius: 12px;
  background: var(--surface-strong);
  box-shadow: 0 12px 28px rgba(23, 32, 27, 0.07);
}

.featured-product-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.featured-product-icon {
  display: block;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: 11px;
  object-fit: cover;
  box-shadow: 0 5px 14px rgba(36, 18, 83, 0.2);
}

.featured-product-brand h2 {
  font-size: clamp(28px, 2.7vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.featured-product-lead {
  margin-bottom: 8px;
}

.featured-product-copy > p {
  color: var(--body);
  font-family: var(--font-sans);
  font-size: 19px;
  font-weight: 400;
  line-height: 1.65;
}

.featured-product-copy .btn {
  margin-top: 22px;
  background: #1e4f91;
  box-shadow: 0 8px 18px rgba(30, 79, 145, 0.2);
}

.featured-product-copy .btn:hover {
  background: #153b70;
  box-shadow: 0 10px 22px rgba(21, 59, 112, 0.25);
}

.featured-product-visual {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #f7f8f6;
  box-shadow: 0 16px 30px rgba(23, 32, 27, 0.12);
  overflow: hidden;
  transform: rotate(0.7deg);
}

.featured-product-screenshot-frame {
  background: #fff;
  transform: none;
}

.featured-product-screenshot {
  display: block;
  width: 100%;
  height: auto;
}

.demo-live {
  color: var(--primary-dark);
  font-size: 10px;
  font-weight: 750;
}

.featured-dashboard {
  display: grid;
  min-height: 330px;
  grid-template-columns: 122px minmax(0, 1fr);
}

.featured-dashboard aside {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 12px;
  border-right: 1px solid var(--border);
  background: #f0f3ef;
}

.featured-dashboard aside strong {
  margin: 0 8px 14px;
  font-size: 13px;
}

.featured-dashboard aside span {
  padding: 8px;
  border-radius: 5px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 650;
}

.featured-dashboard aside span.active {
  color: var(--primary-dark);
  background: var(--primary-soft);
}

.featured-dashboard-main {
  display: grid;
  gap: 12px;
  padding: 18px;
}

.featured-dashboard-heading,
.featured-dashboard-heading > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.featured-dashboard-heading > div {
  align-items: flex-start;
  flex-direction: column;
  gap: 1px;
}

.featured-dashboard small {
  color: var(--muted);
  font-size: 9px;
}

.featured-dashboard-heading strong {
  font-size: 15px;
}

.featured-dashboard-heading em {
  padding: 5px 7px;
  border-radius: 4px;
  color: var(--primary-dark);
  background: var(--primary-soft);
  font-size: 9px;
  font-style: normal;
  font-weight: 800;
}

.featured-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.featured-metrics article,
.featured-chart,
.featured-insight {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
}

.featured-metrics strong {
  display: block;
  margin: 4px 0 2px;
  color: var(--ink);
  font-size: 16px;
}

.featured-metrics span {
  color: var(--primary-dark);
  font-size: 8px;
  font-weight: 700;
}

.featured-data-row {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 8px;
}

.featured-chart > div {
  display: grid;
  height: 104px;
  grid-template-columns: repeat(8, 1fr);
  align-items: end;
  gap: 6px;
  margin-top: 10px;
  padding: 8px;
  background: #f7f5ef;
}

.featured-chart i {
  display: block;
  border-radius: 3px 3px 0 0;
  background: var(--data-blue);
}

.featured-chart i:nth-child(1) { height: 28%; }
.featured-chart i:nth-child(2) { height: 42%; }
.featured-chart i:nth-child(3) { height: 35%; }
.featured-chart i:nth-child(4) { height: 58%; }
.featured-chart i:nth-child(5) { height: 52%; }
.featured-chart i:nth-child(6) { height: 72%; }
.featured-chart i:nth-child(7) { height: 64%; }
.featured-chart i:nth-child(8) { height: 86%; }

.featured-insight {
  border-top: 3px solid var(--primary);
}

.featured-insight span {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--primary-dark);
  font-size: 9px;
  font-weight: 850;
}

.featured-insight strong {
  display: block;
  font-size: 13px;
  line-height: 1.45;
}

.featured-insight p {
  margin-top: 8px;
  color: var(--body);
  font-size: 9px;
  line-height: 1.55;
}

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

  .home-stage {
    width: min(calc(100% - 20px), 1440px);
  }

  .home-stage .container,
  .featured-product {
    width: min(100% - 56px, 1200px);
  }

  .home-stage .home-hero-grid,
  .featured-product-card {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .featured-product-card {
    padding: 30px;
  }

  .featured-dashboard {
    grid-template-columns: 92px minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .home-stage {
    width: calc(100% - 12px);
    margin-top: 6px;
    padding-bottom: 24px;
    border-radius: 12px;
  }

  .home-stage + main {
    width: calc(100% - 12px);
  }

  .home-stage + main .follow-section {
    border-radius: 12px;
  }

  .home-stage + main .topics-section {
    padding-top: 48px;
  }

  .follow-channel-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .follow-channel-heading h2 {
    font-size: 30px;
  }

  .follow-channel-card {
    padding: 24px 18px;
  }

  .channel-qr-window {
    width: min(100%, 280px);
  }

  .home-stage .container,
  .featured-product {
    width: min(100% - 28px, 1200px);
  }

  .home-stage .navbar {
    min-height: 70px;
    padding-top: 6px;
  }

  .home-stage .home-hero {
    padding: 26px 0 72px;
  }

  .home-stage .home-hero-grid,
  .featured-product-card {
    grid-template-columns: 1fr;
  }

  .home-stage .home-hero-grid {
    gap: 12px;
  }

  .home-stage .hero-photo-card {
    width: min(100%, 310px);
  }

  .home-stage .hero-title {
    margin-bottom: 20px;
    font-size: clamp(43px, 13vw, 58px);
  }

  .hero-profile-copy {
    font-size: 16px;
    line-height: 1.72;
  }

  .hero-note {
    margin-top: 12px;
    font-size: 13px;
  }

  .featured-product {
    margin-top: -16px;
    padding-top: 10px;
  }

  .hand-arrow {
    top: -84px;
    right: -4px;
    width: 58px;
  }

  .featured-product-card {
    gap: 30px;
    padding: 24px 18px 18px;
  }

  .featured-product-brand {
    margin-bottom: 20px;
  }

  .featured-product-icon {
    width: 38px;
    height: 38px;
  }

  .featured-product-brand h2 {
    font-size: 30px;
  }

  .featured-product-copy .btn {
    width: 100%;
  }

  .featured-product-visual {
    transform: none;
  }

  .featured-dashboard {
    min-height: 280px;
    grid-template-columns: 1fr;
  }

  .featured-dashboard aside {
    display: none;
  }

  .featured-dashboard-main {
    padding: 12px;
  }
}

@media (max-width: 390px) {
  .home-stage .hero-photo-card {
    width: min(100%, 278px);
  }

  .featured-data-row {
    grid-template-columns: 1fr;
  }

  .featured-insight {
    display: none;
  }
}

/* Product and about pages share the homepage editorial frame */
.product-page,
.about-page {
  background: #fff;
}

.about-page {
  --canvas: #f3f8fc;
  --canvas-soft: #edf5fc;
  --surface: #f8fbff;
  --border: #dbe7f0;
  --primary: #276ef1;
  --primary-dark: #1e4f91;
  --primary-soft: #eaf0ff;
}

.subpage-stage {
  width: min(calc(100% - 32px), 1440px);
  margin: 18px auto 0;
  border-radius: 18px;
  background: #f3f8fc;
  overflow: hidden;
}

.subpage-stage .container {
  width: min(100% - 112px, 1200px);
}

.subpage-stage-header {
  position: static;
  border-color: transparent;
  background: transparent;
  box-shadow: none;
}

.subpage-stage-header.scrolled,
.subpage-stage-header.menu-visible {
  border-color: transparent;
  box-shadow: none;
}

.subpage-stage .navbar {
  min-height: 120px;
  padding-top: 16px;
}

.subpage-stage .nav-link {
  color: var(--ink);
}

.product-stage {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding-bottom: 34px;
}

.product-page-wrapper {
  display: flex;
}

.product-main {
  display: flex;
}

.product-hero {
  min-height: 560px;
  padding: 34px 0 70px;
}

.product-hero-grid {
  grid-template-columns: minmax(0, 0.86fr) minmax(500px, 1.04fr);
  gap: clamp(48px, 6vw, 84px);
}

.product-title {
  font-family: Georgia, "Songti SC", "STSong", serif;
  font-size: clamp(48px, 5.25vw, 68px);
  font-weight: 800;
  line-height: 1.07;
}

.product-title span {
  font-family: var(--font-sans);
  font-weight: 800;
}

.product-lead {
  font-size: 19px;
  line-height: 1.78;
}

.product-points li {
  border-color: #cfe3d9;
  border-radius: 8px;
  background: #fff;
}

.product-demo {
  border-color: #dbe7f0;
  border-radius: 12px;
  box-shadow: 0 14px 32px rgba(23, 32, 27, 0.09);
}

.product-demo-toolbar {
  border-color: #dbe7f0;
  background: #edf4f8;
}

.demo-product-row,
.demo-metrics article,
.demo-chart-panel,
.demo-ai-panel {
  border-color: #dbe7f0;
  background: #fff;
}

.demo-chart {
  background: #eef4f7;
}

.product-footer,
.about-page .footer {
  border-color: #dbe7f0;
  background: #fff;
}

.about-page .footer {
  background: #f3f8fc;
}

.about-stage {
  padding-bottom: 34px;
}

.about-hero {
  padding: 30px 0 68px;
}

.about-hero-grid {
  grid-template-columns: minmax(0, 1.12fr) minmax(360px, 0.88fr);
  gap: clamp(54px, 7vw, 100px);
}

.about-photo-card {
  padding: 10px;
  border-color: #dbe7f0;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 14px 32px rgba(23, 32, 27, 0.09);
}

.about-title {
  font-family: Georgia, "Songti SC", "STSong", serif;
  font-size: clamp(44px, 4.8vw, 64px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.about-lead {
  font-size: 19px;
  line-height: 1.72;
}

.about-keywords span {
  border-color: #dbe7f0;
  border-radius: 8px;
  background: #fff;
}

.about-main {
  width: min(calc(100% - 32px), 1440px);
  margin-inline: auto;
  background: #fff;
}

.about-main .journey-section {
  padding-top: 96px;
  border: 0;
  background: #fff;
}

.about-main .journey-grid {
  align-items: stretch;
}

.about-main .journey-card {
  height: 100%;
  border-color: #dbe7f0;
  border-radius: 12px;
  background: #fff;
  box-shadow: none;
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.about-main .journey-card:hover {
  border-color: #8eb9e2;
  box-shadow: 0 14px 30px rgba(39, 110, 241, 0.13);
  transform: translateY(-3px);
}

.about-main .principle-section {
  width: 100%;
  margin-inline: auto;
  border-radius: 18px;
  background: #f3f8fc;
}

.about-main .principle-list {
  border-color: #dbe7f0;
  border-radius: 12px;
  background: #fff;
}

.about-main .principle-list article {
  border-color: #dbe7f0;
}

.about-main .principle-copy blockquote {
  border-radius: 0 8px 8px 0;
}

.about-main .follow-section {
  margin-top: 24px;
  border-radius: 18px;
  background: #fff;
}

.about-main .follow-channel-card {
  background: #f3f8fc;
}

.about-main .about-product-card {
  border-color: #dbe7f0;
  border-radius: 12px;
  background: #f3f8fc;
}

.about-main .follow-card {
  border-color: #dbe7f0;
  border-radius: 12px;
  background: #fff;
}

@media (max-width: 960px) {
  .subpage-stage .container {
    width: min(100% - 56px, 1200px);
  }

  .product-hero-grid,
  .about-hero-grid {
    gap: 36px;
  }

  .product-hero-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  }
}

@media (max-width: 720px) {
  .subpage-stage {
    width: calc(100% - 12px);
    margin-top: 6px;
    border-radius: 12px;
  }

  .subpage-stage .container {
    width: min(100% - 28px, 1200px);
  }

  .subpage-stage .navbar {
    min-height: 70px;
    padding-top: 6px;
  }

  .product-stage,
  .about-stage {
    padding-bottom: 24px;
  }

  .product-hero {
    padding: 28px 0 54px;
  }

  .product-hero-grid,
  .about-hero-grid {
    grid-template-columns: 1fr;
  }

  .product-title {
    font-size: clamp(40px, 11vw, 52px);
  }

  .product-lead,
  .about-lead {
    font-size: 16px;
  }

  .about-hero {
    padding: 22px 0 54px;
  }

  .about-title {
    font-size: clamp(38px, 10.5vw, 50px);
  }

  .about-main {
    width: calc(100% - 12px);
  }

  .about-main .journey-section {
    padding-top: 70px;
  }

  .about-main .principle-section {
    width: 100%;
    border-radius: 12px;
  }

  .about-main .principle-section + .follow-section {
    margin-top: 16px;
  }
}