@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700&family=Noto+Sans+SC:wght@400;500;700;900&display=swap");

:root {
  --bg: #f3f9fc;
  --bg-strong: #e8f2f8;
  --surface: #ffffff;
  --surface-soft: #f4fbff;
  --line: rgba(18, 95, 126, 0.16);
  --text: #113245;
  --muted: #5b7a8b;
  --brand: #0ab1a4;
  --brand-deep: #048d83;
  --brand-2: #2f9df6;
  --accent: #ff9e3d;
  --ok: #2fbc7f;
  --danger: #e66176;
  --radius-xl: 26px;
  --radius-l: 18px;
  --radius-m: 14px;
  --radius-s: 10px;
  --container: min(1160px, calc(100% - 2.2rem));
  --shadow-l: 0 28px 66px rgba(10, 64, 91, 0.16);
  --shadow-m: 0 14px 30px rgba(10, 57, 81, 0.11);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  line-height: 1.62;
  background:
    radial-gradient(circle at 8% -4%, rgba(10, 177, 164, 0.16), transparent 33%),
    radial-gradient(circle at 92% 8%, rgba(47, 157, 246, 0.15), transparent 32%),
    radial-gradient(circle at 50% 102%, rgba(255, 158, 61, 0.13), transparent 42%),
    var(--bg);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(33, 99, 131, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(33, 99, 131, 0.045) 1px, transparent 1px);
  background-size: 30px 30px;
  mask-image: radial-gradient(circle at center, black 28%, transparent 76%);
  z-index: -2;
}

a {
  color: inherit;
}

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

.container {
  width: var(--container);
  margin: 0 auto;
}

.section {
  padding: 92px 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid rgba(16, 109, 145, 0.24);
  background: rgba(234, 249, 255, 0.9);
  color: #145171;
  font-size: 13px;
  letter-spacing: 0.15px;
}

.badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(140deg, var(--brand), var(--brand-2));
  box-shadow: 0 0 10px rgba(10, 177, 164, 0.7);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  border-bottom: 1px solid rgba(17, 98, 131, 0.14);
  background: rgba(248, 253, 255, 0.88);
  backdrop-filter: blur(14px);
}

.nav-shell {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 16px;
  font-weight: 700;
  background: linear-gradient(132deg, var(--brand), var(--brand-2));
  color: #012c30;
  box-shadow: 0 9px 18px rgba(11, 168, 156, 0.36);
}

.brand-name {
  font-size: 17px;
  line-height: 1.2;
  font-weight: 700;
}

.brand-sub {
  font-size: 12px;
  color: var(--muted);
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 24px;
}

.nav-links a {
  text-decoration: none;
  font-size: 14px;
  color: #2f5a70;
  position: relative;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -7px;
  width: 100%;
  height: 2px;
  border-radius: 1px;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.nav-links a:hover,
.nav-links a.active,
.nav-links a:focus-visible {
  color: #0f3348;
}

.nav-links a:hover::after,
.nav-links a.active::after,
.nav-links a:focus-visible::after {
  transform: scaleX(1);
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  border: none;
  border-radius: 999px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  padding: 10px 20px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  color: #032e30;
  background: linear-gradient(132deg, #0ec2b4, #57cfef);
  box-shadow: 0 10px 20px rgba(8, 148, 145, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 25px rgba(8, 148, 145, 0.36);
}

.btn-outline {
  color: #0f4961;
  background: rgba(233, 248, 255, 0.84);
  border: 1px solid rgba(22, 108, 147, 0.24);
}

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

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid rgba(37, 111, 146, 0.22);
  background: rgba(241, 251, 255, 0.9);
  font-size: 19px;
  color: #17465e;
}

.mobile-nav {
  display: none;
  border-top: 1px solid rgba(17, 101, 135, 0.14);
  padding: 11px 0 15px;
}

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

.mobile-nav a {
  display: block;
  text-decoration: none;
  color: #20576f;
  padding: 10px 2px;
  border-bottom: 1px solid rgba(37, 112, 147, 0.11);
  font-size: 14px;
}

.mobile-nav .btn {
  width: 100%;
  margin-top: 12px;
}

.hero {
  padding: 84px 0 78px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 34px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(34px, 5.2vw, 60px);
  line-height: 1.1;
  letter-spacing: -0.6px;
  margin: 16px 0 20px;
}

.hero p {
  color: var(--muted);
  font-size: clamp(16px, 2.05vw, 19px);
  max-width: 720px;
}

.hero-actions {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
}

.info-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(237, 247, 252, 0.95));
  box-shadow: var(--shadow-l);
  padding: 24px;
}

.info-panel h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.info-list {
  list-style: none;
  display: grid;
  gap: 10px;
}

.info-list li {
  border: 1px solid rgba(20, 100, 134, 0.16);
  border-radius: var(--radius-m);
  background: var(--surface);
  padding: 12px;
}

.info-list strong {
  display: block;
  font-size: 15px;
  margin-bottom: 3px;
}

.info-list span {
  color: var(--muted);
  font-size: 13px;
}

.metrics {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 11px;
}

.metric {
  border-radius: var(--radius-m);
  border: 1px solid rgba(19, 102, 137, 0.16);
  padding: 13px;
  background: var(--surface);
}

.metric strong {
  font-size: 24px;
  line-height: 1;
  display: block;
  margin-bottom: 6px;
}

.metric span {
  color: var(--muted);
  font-size: 12px;
}

.section-head {
  margin-bottom: 28px;
  display: flex;
  justify-content: space-between;
  align-items: end;
  flex-wrap: wrap;
  gap: 12px;
}

.section-head h2 {
  font-size: clamp(28px, 4.6vw, 40px);
  line-height: 1.2;
  margin-top: 10px;
}

.section-head p {
  max-width: 620px;
  color: var(--muted);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.card {
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, #ffffff, #f3fbff);
  padding: 24px;
  box-shadow: var(--shadow-m);
}

.card h3 {
  font-size: 26px;
  margin: 10px 0 10px;
}

.card h4 {
  font-size: 18px;
  margin-bottom: 8px;
}

.card p {
  color: var(--muted);
  font-size: 14px;
}

.pill-row {
  margin: 14px 0 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  font-size: 12px;
  color: #114f6b;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid rgba(19, 101, 136, 0.2);
  background: rgba(230, 247, 255, 0.9);
}

.tick-list {
  list-style: none;
  display: grid;
  gap: 8px;
}

.tick-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: #1f4d63;
  font-size: 14px;
}

.tick-list li::before {
  content: "";
  width: 8px;
  min-width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 8px;
  background: linear-gradient(140deg, var(--brand), var(--brand-2));
}

.step {
  border-radius: var(--radius-l);
  border: 1px solid rgba(18, 99, 133, 0.17);
  padding: 18px;
  background: #ffffff;
}

.step small {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2px;
  background: linear-gradient(132deg, #8aefe4, #9fd9ff);
  color: #0b3f53;
  margin-bottom: 10px;
}

.step h4 {
  margin-bottom: 7px;
  font-size: 18px;
}

.step p {
  color: var(--muted);
  font-size: 13px;
}

.kpi {
  border-radius: var(--radius-l);
  border: 1px solid rgba(20, 102, 137, 0.2);
  padding: 14px;
  background: linear-gradient(155deg, #f9feff, #edf8fd);
}

.kpi strong {
  display: block;
  font-size: 28px;
  line-height: 1;
  margin-bottom: 7px;
}

.kpi span {
  color: var(--muted);
  font-size: 13px;
}

.split-banner {
  margin-top: 18px;
  border: 1px solid rgba(20, 104, 139, 0.18);
  border-radius: var(--radius-xl);
  background: linear-gradient(140deg, #ffffff, #eaf5fb);
  padding: 30px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 16px;
}

.split-banner h3 {
  font-size: clamp(24px, 4vw, 36px);
  line-height: 1.2;
  margin-bottom: 9px;
}

.split-banner p {
  color: var(--muted);
  max-width: 680px;
}

.duo-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.duo-links a {
  text-decoration: none;
  font-size: 13px;
  color: #175671;
  border: 1px solid rgba(20, 103, 139, 0.22);
  background: #f1faff;
  border-radius: 999px;
  padding: 6px 12px;
}

.footer {
  padding: 40px 0 58px;
  color: var(--muted);
  font-size: 13px;
}

.footer-row {
  border-top: 1px solid rgba(22, 104, 138, 0.14);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.56s ease, transform 0.56s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

.page-home .hero h1 {
  max-width: 760px;
}

.page-ai .hero {
  padding-bottom: 62px;
}

.page-ai .hero h1 {
  max-width: 760px;
}

.page-geo .hero h1 {
  max-width: 780px;
}

.page-cases .hero h1 {
  max-width: 780px;
}

.page-contact .hero h1 {
  max-width: 780px;
}

.banner-signal {
  margin-top: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #1a647d;
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(220, 250, 243, 0.85);
  border: 1px solid rgba(13, 171, 143, 0.3);
}

.banner-signal::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #27c88f;
  box-shadow: 0 0 10px rgba(39, 200, 143, 0.8);
}

.case-card {
  border-radius: var(--radius-xl);
  border: 1px solid rgba(16, 101, 136, 0.18);
  background: linear-gradient(160deg, #ffffff, #eef8fc);
  padding: 22px;
  box-shadow: var(--shadow-m);
}

.case-card h3 {
  font-size: 22px;
  margin-bottom: 10px;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.case-meta span {
  font-size: 12px;
  color: #15546f;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid rgba(18, 104, 141, 0.18);
  background: rgba(231, 247, 255, 0.9);
}

.case-block {
  border: 1px solid rgba(20, 101, 136, 0.15);
  border-radius: var(--radius-m);
  background: #ffffff;
  padding: 12px;
}

.case-block + .case-block {
  margin-top: 9px;
}

.case-block h4 {
  font-size: 15px;
  margin-bottom: 4px;
}

.case-block p {
  color: var(--muted);
  font-size: 13px;
}

.quote-card {
  border-radius: var(--radius-l);
  border: 1px solid rgba(20, 101, 136, 0.16);
  background: #ffffff;
  padding: 16px;
}

.quote-card p {
  color: #1f4f65;
  font-size: 14px;
}

.quote-card strong {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  color: #3d6578;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 16px;
}

.form-card {
  border-radius: var(--radius-xl);
  border: 1px solid rgba(17, 102, 138, 0.18);
  background: linear-gradient(160deg, #ffffff, #edf8fc);
  box-shadow: var(--shadow-m);
  padding: 22px;
}

.form-head h3 {
  font-size: 25px;
  margin: 8px 0 8px;
}

.form-head p {
  color: var(--muted);
  font-size: 14px;
}

.form-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.field {
  display: grid;
  gap: 6px;
}

.field.full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 13px;
  color: #1d546e;
  font-weight: 700;
}

.field label i {
  color: var(--danger);
  font-style: normal;
  margin-left: 2px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid rgba(21, 104, 139, 0.2);
  border-radius: var(--radius-s);
  background: #ffffff;
  color: var(--text);
  padding: 10px 11px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field textarea {
  resize: vertical;
  min-height: 116px;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(10, 177, 164, 0.6);
  box-shadow: 0 0 0 3px rgba(10, 177, 164, 0.15);
}

.field.error input,
.field.error select,
.field.error textarea {
  border-color: rgba(230, 97, 118, 0.6);
  box-shadow: 0 0 0 3px rgba(230, 97, 118, 0.14);
}

.error-msg {
  font-size: 12px;
  color: #be3f55;
}

.hint {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

.form-actions {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.form-actions .btn {
  min-width: 140px;
}

.success-box {
  margin-top: 12px;
  border: 1px solid rgba(47, 188, 127, 0.35);
  background: rgba(230, 252, 241, 0.92);
  border-radius: var(--radius-m);
  padding: 11px;
  font-size: 13px;
  color: #236347;
  display: none;
}

.success-box.show {
  display: block;
}

.contact-side {
  display: grid;
  gap: 12px;
}

.side-card {
  border-radius: var(--radius-l);
  border: 1px solid rgba(18, 102, 137, 0.18);
  background: #ffffff;
  padding: 16px;
}

.side-card h4 {
  font-size: 18px;
  margin-bottom: 8px;
}

.side-card p {
  color: var(--muted);
  font-size: 14px;
}

.contact-list {
  list-style: none;
  margin-top: 8px;
  display: grid;
  gap: 7px;
}

.contact-list li {
  font-size: 14px;
  color: #1d556f;
}

.timeline {
  list-style: none;
  display: grid;
  gap: 8px;
  margin-top: 8px;
}

.timeline li {
  border: 1px solid rgba(19, 101, 136, 0.16);
  border-radius: var(--radius-m);
  background: #f8fdff;
  padding: 10px;
}

.timeline strong {
  display: block;
  font-size: 14px;
  margin-bottom: 3px;
}

.timeline span {
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 1040px) {
  .nav-links,
  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: inline-grid;
    place-items: center;
  }

  .hero-grid,
  .grid-2,
  .split-banner,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .metrics,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .section {
    padding: 70px 0;
  }

  .hero {
    padding-top: 62px;
  }

  .hero h1 {
    line-height: 1.14;
  }

  .brand-sub {
    display: none;
  }

  .metrics,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .card {
    padding: 18px;
  }

  .split-banner {
    padding: 22px;
  }
}