:root {
  --ink: #10272f;
  --muted: #63777f;
  --soft: #f5faf9;
  --line: #dce9e8;
  --teal: #0f9f91;
  --teal-deep: #0b6e68;
  --blue: #235ee8;
  --violet: #7760d8;
  --amber: #e58b21;
  --paper: #ffffff;
  --shadow: 0 22px 70px rgba(16, 39, 47, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: #fbfdfc;
  letter-spacing: 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(110deg, rgba(15, 159, 145, 0.08), transparent 32%),
    linear-gradient(250deg, rgba(35, 94, 232, 0.06), transparent 38%);
  z-index: -1;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 74px;
  padding: 14px clamp(20px, 5vw, 72px);
  background: rgba(251, 253, 252, 0.86);
  border-bottom: 1px solid rgba(220, 233, 232, 0.7);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand img {
  width: 132px;
  height: auto;
}

.brand-divider {
  width: 1px;
  height: 24px;
  background: var(--line);
}

.product-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  color: #425861;
  font-size: 14px;
}

.site-nav a {
  position: relative;
  padding: 8px 0;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 2px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.site-nav a:hover::after {
  transform: scaleX(1);
}

.header-action,
.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.header-action,
.primary-action {
  color: #fff;
  background: #102f36;
  box-shadow: 0 10px 22px rgba(16, 47, 54, 0.18);
}

.secondary-action {
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
}

.hero-section {
  min-height: calc(100vh - 74px);
  display: flex;
  align-items: center;
  padding: clamp(52px, 8vw, 94px) clamp(20px, 5vw, 72px) 54px;
  background:
    linear-gradient(180deg, #fbfdfc 0%, #eef8f7 100%),
    repeating-linear-gradient(90deg, transparent 0 54px, rgba(16, 39, 47, 0.04) 54px 55px);
}

.hero-inner {
  width: min(1220px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(460px, 1.08fr);
  gap: clamp(36px, 6vw, 74px);
  align-items: center;
}

.eyebrow,
.section-heading span,
.contact-section span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--teal-deep);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--teal);
}

.hero-copy h1 {
  margin: 18px 0 22px;
  font-size: clamp(48px, 8vw, 88px);
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 650px;
  margin: 0;
  color: #425861;
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.signal-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.signal-row span {
  padding: 9px 13px;
  border: 1px solid rgba(15, 159, 145, 0.22);
  border-radius: 999px;
  color: #24525a;
  background: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  font-weight: 700;
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(220, 233, 232, 0.86);
}

.section {
  padding: clamp(68px, 9vw, 116px) clamp(20px, 5vw, 72px);
}

.compact-band {
  padding-top: 30px;
  padding-bottom: 30px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.metric-grid {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.metric {
  min-height: 116px;
  display: grid;
  place-items: center;
  gap: 8px;
  background: #fff;
  text-align: center;
}

.metric strong {
  font-size: 34px;
  line-height: 1;
}

.metric span {
  color: var(--muted);
  font-size: 14px;
}

.section-heading {
  width: min(780px, 100%);
  margin: 0 auto 42px;
  text-align: center;
}

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

.section-heading h2,
.contact-section h2 {
  margin: 12px 0 14px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.14;
  letter-spacing: 0;
}

.section-heading p,
.contact-section p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.companion-grid,
.scenario-grid {
  width: min(1160px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.companion-card,
.scenario {
  min-height: 238px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 36px rgba(16, 39, 47, 0.06);
}

.card-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  margin-bottom: 28px;
  border-radius: 8px;
  color: #fff;
  font-weight: 900;
}

.tone-warm .card-icon {
  background: var(--teal);
}

.tone-rational .card-icon {
  background: var(--blue);
}

.tone-mindful .card-icon {
  background: var(--violet);
}

.tone-active .card-icon {
  background: var(--amber);
}

.companion-card h3,
.capability-item h3,
.workflow-rail h3,
.scenario h3 {
  margin: 0 0 12px;
  font-size: 20px;
  line-height: 1.3;
}

.companion-card p,
.capability-item p,
.workflow-rail p,
.scenario p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.72;
}

.split-section {
  width: min(1220px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(38px, 7vw, 90px);
  align-items: start;
}

.capability-list {
  display: grid;
  gap: 14px;
}

.capability-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 22px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.88);
}

.capability-mark {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--teal-deep);
  background: #e8f7f4;
  font-weight: 900;
}

.workflow-section {
  background: #10272f;
  color: #fff;
}

.workflow-section .section-heading h2,
.workflow-section .section-heading p,
.workflow-section .section-heading span {
  color: #fff;
}

.workflow-section .section-heading p {
  color: #c9d9dc;
}

.workflow-rail {
  width: min(1160px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.workflow-rail article {
  min-height: 250px;
  padding: 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.workflow-rail article:last-child {
  border-right: 0;
}

.workflow-rail span {
  display: inline-block;
  margin-bottom: 42px;
  color: #6ee7d4;
  font-size: 13px;
  font-weight: 800;
}

.workflow-rail h3 {
  color: #fff;
}

.workflow-rail p {
  color: #c9d9dc;
}

.scenario-section {
  width: min(1220px, 100%);
  margin: 0 auto;
}

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

.scenario {
  min-height: 172px;
}

.contact-section {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  padding: clamp(34px, 6vw, 58px);
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, #0b6e68 0%, #10272f 68%, #1a3f49 100%);
}

.contact-section p {
  max-width: 760px;
  color: #d8e8e9;
}

.primary-action.light {
  color: #10272f;
  background: #fff;
  box-shadow: none;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 30px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #fff;
  font-size: 14px;
}

.site-footer div:first-child {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.site-footer strong {
  color: var(--ink);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

@media (max-width: 1020px) {
  .site-nav {
    display: none;
  }

  .hero-inner,
  .split-section {
    grid-template-columns: 1fr;
  }

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

  .hero-visual {
    max-width: 780px;
  }

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

  .workflow-rail article:nth-child(2) {
    border-right: 0;
  }

  .workflow-rail article:nth-child(1),
  .workflow-rail article:nth-child(2) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }
}

@media (max-width: 720px) {
  .site-header {
    min-height: 64px;
    padding: 10px 18px;
  }

  .brand img {
    width: 104px;
  }

  .brand-divider,
  .header-action {
    display: none;
  }

  .product-name {
    font-size: 14px;
  }

  .hero-section {
    padding-top: 44px;
  }

  .hero-copy h1 {
    font-size: 48px;
  }

  .hero-lede {
    font-size: 16px;
    line-height: 1.78;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .signal-row span {
    flex: 1 1 calc(50% - 8px);
    text-align: center;
  }

  .metric-grid,
  .companion-grid,
  .scenario-grid,
  .workflow-rail {
    grid-template-columns: 1fr;
  }

  .metric {
    min-height: 92px;
  }

  .workflow-rail article {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .workflow-rail article:last-child {
    border-bottom: 0;
  }

  .capability-item {
    grid-template-columns: 1fr;
  }

  .contact-section,
  .site-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .footer-links {
    flex-direction: column;
    gap: 10px;
  }
}