:root {
  --brand-gold: #b99a55;
  --brand-gold-soft: #f3ead6;
  --ink: #111111;
  --text: #3f4652;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --blue: #1e5eff;
  --deep-blue: #12325b;
  --green: #16a34a;
  --shadow: 0 18px 50px rgba(17, 17, 17, 0.08);
  --radius: 8px;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}

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

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

.container {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 28px;
  height: 76px;
  padding: 0 32px;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  width: 180px;
  height: 48px;
  overflow: hidden;
}

.brand img {
  width: 180px;
  height: auto;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
  font-size: 14px;
  color: var(--text);
}

.desktop-nav a:hover {
  color: var(--ink);
}

.header-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid transparent;
}

.header-cta,
.btn-primary {
  color: #fff;
  background: var(--ink);
}

.header-cta:hover,
.btn-primary:hover {
  background: #2b2b2b;
}

.btn-secondary {
  color: var(--ink);
  background: #fff;
  border-color: var(--line);
}

.btn-secondary:hover {
  border-color: var(--brand-gold);
}

.menu-toggle,
.mobile-nav {
  display: none;
}

.section-band {
  background:
    linear-gradient(120deg, rgba(185, 154, 85, 0.12), rgba(30, 94, 255, 0.06)),
    #fff;
}

.section {
  padding: 92px 0;
}

.section-muted {
  background: var(--bg-soft);
}

.hero {
  padding: 82px 0 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.8fr);
  gap: 56px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--brand-gold);
  font-size: 14px;
  font-weight: 700;
}

.eyebrow.gold {
  color: var(--brand-gold);
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  color: var(--ink);
  font-size: 54px;
  line-height: 1.12;
  font-weight: 700;
}

h2 {
  margin-bottom: 16px;
  color: var(--ink);
  font-size: 34px;
  line-height: 1.25;
  font-weight: 700;
}

h3 {
  color: var(--ink);
  font-size: 20px;
  line-height: 1.35;
}

.hero-lead {
  max-width: 760px;
  margin-bottom: 28px;
  color: var(--text);
  font-size: 18px;
}

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

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.trust-row span {
  padding: 7px 11px;
  border: 1px solid rgba(185, 154, 85, 0.28);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--text);
  font-size: 13px;
}

.hero-panel {
  padding: 26px;
  border: 1px solid rgba(18, 50, 91, 0.12);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow);
}

.flow-card {
  padding: 24px;
  border-radius: var(--radius);
  background: var(--deep-blue);
  color: #fff;
}

.flow-label {
  display: block;
  margin-bottom: 12px;
  color: #d9c58f;
  font-size: 13px;
  font-weight: 700;
}

.flow-card strong {
  display: block;
  font-size: 24px;
  line-height: 1.45;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 18px 0;
}

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

.metrics-grid span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.metrics-grid strong {
  color: var(--ink);
  font-size: 22px;
}

.signal-list {
  display: grid;
  gap: 10px;
}

.signal-list p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--text);
  font-size: 14px;
}

.signal-list span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 40px;
}

.section-heading p:last-child {
  color: var(--muted);
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.55fr);
  gap: 60px;
  max-width: none;
  align-items: end;
}

.pain-grid,
.service-grid,
.case-grid,
.reason-grid {
  display: grid;
  gap: 18px;
}

.pain-grid {
  grid-template-columns: repeat(5, 1fr);
}

.pain-grid article,
.service-card,
.case-grid article,
.reason-grid article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.pain-grid article {
  padding: 22px;
}

.icon-dot {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  border-radius: 50%;
  color: var(--deep-blue);
  background: var(--brand-gold-soft);
  font-size: 12px;
  font-weight: 700;
}

.pain-grid h3,
.service-card h3,
.case-grid h3,
.reason-grid h3,
.platform-list h3 {
  margin-bottom: 10px;
}

.pain-grid p,
.service-card p,
.case-grid p,
.reason-grid p,
.platform-list p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
}

.service-grid {
  grid-template-columns: repeat(4, 1fr);
}

.service-card {
  min-height: 250px;
  padding: 24px;
}

.service-card.featured {
  grid-column: span 2;
  background:
    linear-gradient(135deg, rgba(18, 50, 91, 0.94), rgba(17, 17, 17, 0.94)),
    var(--deep-blue);
}

.service-card.featured h3,
.service-card.featured p,
.service-card.featured li {
  color: #fff;
}

.service-card.featured .service-kicker {
  color: #f2d990;
}

.service-kicker {
  display: block;
  margin-bottom: 12px;
  color: var(--brand-gold);
  font-size: 13px;
  font-weight: 700;
}

.service-card ul {
  margin: 18px 0;
  padding-left: 18px;
  color: var(--text);
}

.service-card a {
  display: inline-flex;
  margin-top: 20px;
  color: var(--blue);
  font-weight: 700;
}

.service-card.featured a {
  color: #f2d990;
}

.video-link {
  display: inline-flex;
  margin-top: 16px;
  margin-bottom: 0 !important;
  padding: 7px 10px;
  border-radius: 6px;
  background: rgba(30, 94, 255, 0.08);
  color: var(--deep-blue) !important;
  font-size: 13px !important;
  font-weight: 700;
}

.service-card.featured .video-link {
  background: rgba(255, 255, 255, 0.12);
  color: #f2d990 !important;
}

.dark-section {
  color: rgba(255, 255, 255, 0.78);
  background: var(--deep-blue);
}

.dark-section h2,
.dark-section h3 {
  color: #fff;
}

.dark-section .section-heading p:last-child {
  color: rgba(255, 255, 255, 0.72);
}

.platform-list {
  display: grid;
  gap: 12px;
}

.platform-list article {
  display: grid;
  grid-template-columns: 56px 260px 1fr;
  gap: 22px;
  align-items: start;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
}

.platform-list span {
  color: var(--brand-gold);
  font-weight: 700;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.solution-grid a {
  display: flex;
  min-height: 92px;
  align-items: center;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  font-weight: 600;
}

.solution-grid a:hover {
  border-color: var(--brand-gold);
}

.case-grid {
  grid-template-columns: repeat(4, 1fr);
}

.case-grid article,
.reason-grid article {
  padding: 24px;
}

.case-grid span {
  display: block;
  margin-bottom: 12px;
  color: var(--brand-gold);
  font-size: 13px;
  font-weight: 700;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.45fr) 1fr;
  gap: 56px;
}

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

.contact-section {
  color: #fff;
  background: var(--ink);
}

.contact-section h2 {
  color: #fff;
}

.contact-section p {
  color: rgba(255, 255, 255, 0.72);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(360px, 0.72fr);
  gap: 54px;
  align-items: start;
}

.contact-card {
  display: grid;
  grid-template-columns: 118px 1fr;
  gap: 18px;
  align-items: center;
  max-width: 520px;
  margin-top: 32px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
}

.contact-card img {
  width: 118px;
  height: 118px;
  object-fit: cover;
  object-position: center 38%;
  border-radius: 6px;
}

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

.contact-card strong {
  margin-bottom: 8px;
  color: #fff;
}

.contact-card span {
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
}

.lead-form {
  display: grid;
  gap: 16px;
  padding: 26px;
  border-radius: var(--radius);
  background: #fff;
  color: var(--text);
}

.lead-form label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.lead-form input,
.lead-form select,
.lead-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 13px;
  color: var(--text);
  font: inherit;
  background: #fff;
}

.lead-form input:focus,
.lead-form select:focus,
.lead-form textarea:focus {
  outline: 2px solid rgba(30, 94, 255, 0.16);
  border-color: var(--blue);
}

.lead-form textarea {
  resize: vertical;
}

.form-note {
  margin: 0;
  color: var(--muted) !important;
  font-size: 13px;
}

.launch-card h3 {
  margin-bottom: 10px;
}

.launch-card ul {
  display: grid;
  gap: 10px;
  margin: 18px 0 22px;
  padding: 0;
  list-style: none;
}

.launch-card li {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg-soft);
  color: var(--ink);
  font-weight: 600;
}

.site-footer {
  padding: 34px 0;
  color: rgba(255, 255, 255, 0.76);
  background: #070707;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 32px;
}

.footer-grid strong {
  color: #fff;
}

.footer-grid p {
  margin: 5px 0 0;
  font-size: 14px;
}

@media (max-width: 1080px) {
  .pain-grid,
  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .solution-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .desktop-nav,
  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: grid;
    gap: 5px;
    margin-left: auto;
    border: 0;
    background: transparent;
    padding: 8px;
  }

  .menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--ink);
  }

  .mobile-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    z-index: 19;
    display: none;
    grid-template-columns: 1fr;
    padding: 18px 32px 24px;
    border-bottom: 1px solid var(--line);
    background: #fff;
  }

  .mobile-nav.open {
    display: grid;
  }

  .mobile-nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    font-weight: 600;
  }
}

@media (max-width: 860px) {
  .container {
    width: min(100% - 32px, 1180px);
  }

  .section {
    padding: 68px 0;
  }

  .hero {
    padding: 58px 0 60px;
  }

  .hero-grid,
  .split-heading,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  h1 {
    font-size: 38px;
  }

  h2 {
    font-size: 28px;
  }

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

  .platform-list article {
    grid-template-columns: 1fr;
    gap: 8px;
  }

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

  .footer-grid {
    display: grid;
  }
}

@media (max-width: 620px) {
  .site-header {
    height: 68px;
    padding: 0 16px;
  }

  .brand,
  .brand img {
    width: 138px;
  }

  .mobile-nav {
    top: 68px;
  }

  .pain-grid,
  .service-grid,
  .case-grid,
  .reason-grid,
  .solution-grid {
    grid-template-columns: 1fr;
  }

  .service-card.featured {
    grid-column: auto;
  }

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

  .contact-card {
    grid-template-columns: 1fr;
  }
}