:root {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --teal: #0071e3;
  --teal-dark: #0066cc;
  --coral: #ff7a59;
  --gold: #f5b642;
  --line: rgba(29, 29, 31, 0.12);
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 50% -10%, rgba(255, 255, 255, 0.95), transparent 34%),
    linear-gradient(180deg, #fbfbfd 0%, #f5f5f7 46%, #ffffff 100%),
    var(--bg);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 32px));
  margin: 16px auto 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(251, 251, 253, 0.82);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.05);
  backdrop-filter: saturate(180%) blur(20px);
}

.brand,
.site-nav,
.hero-actions,
.quick-stats,
.showcase-header,
.showcase-footer,
.contact-item,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, #1d1d1f, #53535a);
}

.site-nav {
  gap: 6px;
}

.site-nav a {
  padding: 9px 12px;
  border-radius: 6px;
  color: #344054;
  font-size: 14px;
  font-weight: 600;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--teal-dark);
  background: rgba(0, 113, 227, 0.1);
}

.hero,
.section,
.feature-band,
.contact {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.78fr);
  gap: 42px;
  align-items: center;
  min-height: calc(100vh - 84px);
  padding: 52px 0 40px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 3.8vw, 46px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 19px;
}

.hero-lede {
  max-width: 680px;
  color: #475467;
  font-size: 18px;
  line-height: 1.8;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 7px;
  font-weight: 800;
}

.button.primary {
  color: #fff;
  background: var(--teal);
  box-shadow: 0 14px 32px rgba(0, 113, 227, 0.24);
}

.button.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.quick-stats {
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0 0;
}

.quick-stats div {
  min-width: 150px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.quick-stats dt {
  color: var(--muted);
  font-size: 13px;
}

.quick-stats dd {
  margin: 4px 0 0;
  font-weight: 800;
}

.hero-visual {
  position: relative;
  min-height: 620px;
}

.hero-visual::before {
  position: absolute;
  inset: 48px 12px 92px;
  content: "";
  border-radius: 36px;
  background:
    radial-gradient(circle at 18% 20%, rgba(0, 113, 227, 0.2), transparent 28%),
    radial-gradient(circle at 82% 18%, rgba(175, 82, 222, 0.16), transparent 30%),
    radial-gradient(circle at 62% 78%, rgba(52, 199, 89, 0.14), transparent 34%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(245, 245, 247, 0.52));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.showcase-panel {
  position: absolute;
  right: 24px;
  top: 54px;
  width: min(460px, 88vw);
  min-height: 500px;
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 26px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.66)),
    rgba(255, 255, 255, 0.74);
  box-shadow: var(--shadow);
  backdrop-filter: saturate(180%) blur(22px);
}

.showcase-header {
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 28px;
}

.showcase-header span,
.floating-note span,
.showcase-footer span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.showcase-header strong {
  font-size: 24px;
}

.app-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.app-tile {
  min-height: 150px;
  padding: 18px;
  border: 1px solid rgba(23, 32, 42, 0.1);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.07);
}

.app-tile span {
  display: block;
  width: 42px;
  height: 42px;
  margin-bottom: 28px;
  border-radius: 12px;
}

.app-tile strong {
  display: block;
  margin-bottom: 6px;
  font-size: 20px;
}

.app-tile p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.tile-teal span {
  background: linear-gradient(135deg, #0071e3, #5ac8fa);
}

.tile-coral span {
  background: linear-gradient(135deg, #ff7a59, #ffcc8a);
}

.tile-gold span {
  background: linear-gradient(135deg, #34c759, #a6e86f);
}

.tile-ink span {
  background: linear-gradient(135deg, #1d1d1f, #8e8e93);
}

.showcase-footer {
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
}

.showcase-footer div {
  flex: 1;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.68);
}

.showcase-footer strong {
  display: block;
  margin-top: 4px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.teal {
  background: var(--teal);
}

.dot.coral {
  background: var(--coral);
}

.dot.ink {
  background: var(--ink);
}

.floating-note {
  position: absolute;
  width: 230px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.1);
  backdrop-filter: saturate(180%) blur(16px);
}

.note-top {
  right: 330px;
  top: 118px;
}

.note-bottom {
  right: 0;
  bottom: 86px;
}

.floating-note span,
.contact-item span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 13px;
}

.floating-note strong {
  font-size: 18px;
}

.section {
  padding: 84px 0;
}

.section-heading {
  max-width: 680px;
  margin-bottom: 34px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  min-height: 250px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.045);
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 34px;
  margin-bottom: 34px;
  border-radius: 6px;
  color: #fff;
  background: linear-gradient(135deg, #1d1d1f, #55555d);
  font-weight: 800;
}

.service-card p,
.timeline p,
.contact p {
  color: #5b6677;
  line-height: 1.75;
}

.feature-band {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: 34px;
  align-items: start;
  padding: 52px;
  border-radius: 8px;
  color: #fff;
  background:
    radial-gradient(circle at 18% 12%, rgba(90, 200, 250, 0.36), transparent 28%),
    linear-gradient(120deg, #1d1d1f, #3a3a3c),
    var(--teal);
}

.feature-band .eyebrow {
  color: #a7d7ff;
}

.work-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.work-list a {
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  font-weight: 800;
}

.timeline {
  display: grid;
  gap: 14px;
  max-width: 820px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.045);
}

.timeline span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--teal);
  font-weight: 800;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.55fr);
  gap: 42px;
  align-items: center;
  padding: 72px 0 90px;
}

.contact-panel {
  display: grid;
  gap: 14px;
}

.contact-item {
  width: 100%;
  min-height: 86px;
  justify-content: space-between;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: inherit;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: none;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.contact-item strong {
  overflow-wrap: anywhere;
}

.site-footer {
  justify-content: space-between;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0 34px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.site-footer a {
  margin-left: 12px;
  color: var(--teal-dark);
  font-weight: 700;
}

.policy-page {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 58px 0 80px;
}

.policy-hero {
  max-width: 860px;
  padding: 42px 0 34px;
}

.policy-hero h1 {
  margin-bottom: 18px;
}

.policy-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.policy-meta span {
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: #344054;
  background: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  font-weight: 700;
}

.policy-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.policy-toc {
  position: sticky;
  top: 116px;
  display: grid;
  gap: 6px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
}

.policy-toc a {
  padding: 9px 10px;
  border-radius: 6px;
  color: #344054;
  font-size: 14px;
  font-weight: 700;
}

.policy-toc a:hover {
  color: var(--teal-dark);
  background: rgba(0, 113, 227, 0.1);
}

.policy-content {
  display: grid;
  gap: 16px;
}

.policy-content section {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
}

.policy-content h2 {
  margin-bottom: 14px;
  font-size: clamp(24px, 2.8vw, 34px);
}

.policy-content p,
.policy-content li {
  color: #5b6677;
  line-height: 1.85;
}

.policy-content p:last-child {
  margin-bottom: 0;
}

.policy-content ol {
  margin: 0;
  padding-left: 22px;
}

.policy-content a {
  color: var(--teal-dark);
  font-weight: 800;
}

@media (max-width: 920px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
  }

  .hero,
  .feature-band,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: 610px;
  }

  .showcase-panel {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
  }

  .note-top {
    left: 18px;
    right: auto;
    top: 96px;
  }

  .note-bottom {
    right: 18px;
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .policy-layout {
    grid-template-columns: 1fr;
  }

  .policy-toc {
    position: static;
  }
}

@media (max-width: 620px) {
  .site-header,
  .hero,
  .section,
  .feature-band,
  .contact,
  .site-footer,
  .policy-page {
    width: min(100% - 24px, 1180px);
  }

  .site-nav a {
    white-space: nowrap;
  }

  h1 {
    font-size: 40px;
  }

  .hero-lede {
    font-size: 16px;
  }

  .quick-stats div,
  .button {
    width: 100%;
  }

  .hero-visual {
    min-height: 570px;
  }

  .showcase-panel {
    width: min(340px, calc(100vw - 40px));
    min-height: 500px;
    padding: 18px;
  }

  .app-card-grid {
    gap: 10px;
  }

  .app-tile {
    min-height: 132px;
    padding: 14px;
  }

  .app-tile span {
    width: 36px;
    height: 36px;
    margin-bottom: 22px;
  }

  .showcase-footer {
    flex-direction: column;
  }

  .floating-note {
    width: 190px;
    padding: 14px;
  }

  .note-top {
    left: 0;
    top: 54px;
  }

  .note-bottom {
    right: 0;
    bottom: 0;
  }

  .section {
    padding: 58px 0;
  }

  .service-grid,
  .work-list {
    grid-template-columns: 1fr;
  }

  .feature-band {
    padding: 30px 22px;
  }

  .timeline li {
    grid-template-columns: 40px 1fr;
    padding: 16px;
  }

  .timeline span {
    width: 36px;
    height: 36px;
  }

  .contact {
    padding: 58px 0 72px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .site-footer a {
    margin-left: 0;
  }

  .policy-page {
    padding-top: 28px;
  }

  .policy-hero {
    padding-top: 24px;
  }

  .policy-content section {
    padding: 20px;
  }
}