:root {
  --ink: #15202b;
  --muted: #627084;
  --line: #d9e0e8;
  --bg: #f5f7fa;
  --panel: #ffffff;
  --brand: #f2a02f;
  --brand-dark: #9f5c05;
  --teal: #1f766d;
  --navy: #193552;
  --shadow: 0 18px 50px rgba(17, 34, 51, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 14px clamp(20px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

nav a {
  text-decoration: none;
}

.hero {
  min-height: calc(100vh - 71px);
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  align-items: center;
  gap: clamp(28px, 6vw, 76px);
  padding: clamp(52px, 8vw, 110px) clamp(20px, 5vw, 76px);
  background: linear-gradient(135deg, #f9fbfd 0%, #eef4f3 100%);
  color: var(--ink);
}

.hero-copy {
  max-width: 820px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 20px;
  font-size: clamp(42px, 7vw, 78px);
  line-height: 0.98;
  letter-spacing: 0;
  max-width: 900px;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0;
}

.lead {
  max-width: 720px;
  color: var(--muted);
  font-size: 21px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  border-color: var(--brand);
  background: var(--brand);
  color: #1d1406;
}

.hero-visual {
  display: grid;
  gap: 16px;
}

.hero-visual > img {
  display: block;
  width: 100%;
  max-height: 430px;
  object-fit: cover;
  object-position: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.hero-panel div {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.hero-panel strong {
  display: block;
  color: var(--navy);
  font-size: 30px;
  line-height: 1;
}

.hero-panel span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.section,
.feature,
.cta {
  padding: clamp(54px, 8vw, 96px) clamp(20px, 5vw, 76px);
}

.section {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.split {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(26px, 5vw, 72px);
  align-items: start;
}

.split p:last-child,
.feature-copy p,
.section p {
  color: var(--muted);
  font-size: 18px;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 34px;
}

.solution-grid,
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.solution-card,
.team-grid article {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.solution-card span {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--teal);
  font-weight: 900;
}

.feature {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  background: #eef3f2;
}

.feature-media img,
.media-card img {
  display: block;
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.check-list {
  display: grid;
  gap: 10px;
  padding-left: 20px;
  color: var(--ink);
  font-weight: 700;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.spec-grid div {
  min-height: 118px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.spec-grid strong,
.spec-grid span {
  display: block;
}

.spec-grid strong {
  color: var(--navy);
  font-size: 28px;
  line-height: 1.1;
}

.spec-grid span {
  margin-top: 10px;
  color: var(--muted);
  font-weight: 700;
}

.contrast {
  background: var(--navy);
  color: #fff;
}

.contrast .section-heading p,
.contrast article p {
  color: rgba(255, 255, 255, 0.76);
}

.contrast .team-grid article {
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.08);
}

.founder-card {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(24px, 4vw, 54px);
  align-items: center;
  margin-bottom: 18px;
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.founder-photo {
  overflow: hidden;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
}

.founder-photo img {
  display: block;
  width: 100%;
  min-height: 240px;
  object-fit: cover;
}

.founder-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.founder-stats span {
  min-height: 98px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.76);
  background: rgba(255, 255, 255, 0.08);
}

.founder-stats strong {
  display: block;
  margin-bottom: 6px;
  color: #fff;
  font-size: 22px;
}

.media-row {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}

.source {
  font-size: 14px !important;
  color: var(--muted);
}

.quote-image {
  width: min(100%, 640px);
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.comparison div {
  padding: 18px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.comparison div:nth-child(2n + 1) {
  border-right: 1px solid var(--line);
}

.comparison .comparison-head {
  background: #edf1f5;
  color: var(--muted);
  font-weight: 900;
}

.comparison .comparison-head.active {
  background: var(--teal);
  color: #fff;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding: 0;
  list-style: none;
  counter-reset: process;
}

.process-list li {
  min-height: 150px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  counter-increment: process;
}

.process-list li::before {
  content: counter(process, decimal-leading-zero);
  display: block;
  margin-bottom: 18px;
  color: var(--brand-dark);
  font-weight: 900;
}

.process-list strong,
.process-list span {
  display: block;
}

.process-list span {
  margin-top: 8px;
  color: var(--muted);
}

.cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 320px);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  color: #fff;
  background: linear-gradient(120deg, var(--navy), var(--teal));
}

.cta p {
  max-width: 820px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 18px;
}

.contact-grid a,
.contact-grid span {
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  text-decoration: none;
}

.wechat-card {
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  text-align: center;
}

.wechat-card img {
  display: block;
  width: 100%;
  max-height: 360px;
  object-fit: contain;
  border-radius: 8px;
  background: #fff;
}

.wechat-card strong,
.wechat-card span {
  display: block;
}

.wechat-card strong {
  margin-top: 14px;
  font-size: 22px;
}

.wechat-card span {
  color: rgba(255, 255, 255, 0.76);
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .hero,
  .split,
  .feature,
  .media-row,
  .founder-card,
  .cta {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 34px;
    padding-bottom: 46px;
  }

  .section,
  .feature,
  .cta {
    padding-top: 44px;
    padding-bottom: 44px;
  }

  h1 {
    font-size: 42px;
  }

  .hero-panel {
    grid-template-columns: 1fr;
  }

  .solution-grid,
  .team-grid,
  .process-list,
  .spec-grid,
  .founder-stats {
    grid-template-columns: 1fr;
  }

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

  .comparison div:nth-child(2n + 1) {
    border-right: 0;
  }
}