:root {
  --navy: #344074;
  --deep: #172246;
  --coral: #ec6c59;
  --coral-dark: #d95043;
  --blue: #2361a5;
  --teal: #65d6c7;
  --paper: #ffffff;
  --soft: #f6f8fc;
  --text: #1f2a44;
  --muted: #65708a;
  --line: #e2e7f0;
  --shadow: 0 22px 60px rgba(23, 34, 70, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background: var(--paper);
  letter-spacing: 0;
}

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

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

p {
  margin: 0;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(52, 64, 116, 0.12);
  box-shadow: 0 12px 30px rgba(23, 34, 70, 0.08);
  backdrop-filter: blur(14px);
}

.header-inner {
  width: min(1180px, calc(100% - 40px));
  min-height: 76px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  min-width: 278px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand-logo {
  width: 142px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
  min-width: 0;
}

.nav a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border-radius: 6px;
  color: var(--navy);
  font-size: 14px;
  font-weight: 800;
}

.nav a:hover,
.nav a.is-active {
  color: var(--coral-dark);
  background: rgba(236, 108, 89, 0.08);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--navy);
  align-items: center;
  justify-content: center;
}

.menu-toggle svg {
  width: 22px;
  height: 22px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 78px 0 88px;
  color: #fff;
  background:
    linear-gradient(110deg, rgba(17, 29, 70, 0.94), rgba(35, 97, 165, 0.8) 58%, rgba(101, 214, 199, 0.72)),
    url("https://images.unsplash.com/photo-1506973035872-a4ec16b8e8d9?auto=format&fit=crop&w=1800&q=84") center/cover;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0 0 0 auto;
  width: 42%;
  background: repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.16) 0 2px, transparent 2px 22px);
  clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 100%);
  opacity: 0.75;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(380px, 430px);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  color: var(--coral);
  font-size: 14px;
  font-weight: 900;
  text-transform: uppercase;
}

.hero .eyebrow,
.why-section .eyebrow,
.consult-section .eyebrow,
.contact-band .eyebrow {
  color: #ffd6d0;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--navy);
  line-height: 1.12;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 760px;
  margin-top: 12px;
  color: #fff;
  font-size: 58px;
  font-weight: 900;
}

.lead {
  max-width: 620px;
  margin-top: 18px;
  color: #ecf5ff;
  font-size: 20px;
}

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

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 900;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #fff;
  background: var(--coral);
  box-shadow: 0 16px 36px rgba(236, 108, 89, 0.28);
}

.button-primary:hover {
  background: var(--coral-dark);
}

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

.consult-card {
  padding: 26px;
  border-radius: 18px;
  background: #fff;
  color: var(--text);
  box-shadow: var(--shadow);
}

.card-label {
  color: var(--coral);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.consult-card h2 {
  margin-top: 8px;
  font-size: 28px;
}

.consult-card p {
  margin-top: 8px;
  color: var(--muted);
}

.quick-form {
  margin-top: 18px;
}

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

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

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

.field label {
  color: var(--navy);
  font-size: 13px;
  font-weight: 900;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  font: inherit;
  padding: 10px 12px;
  background: #fff;
}

.field textarea {
  min-height: 88px;
  resize: vertical;
}

.check-row {
  grid-column: 1 / -1;
  display: flex;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

.check-row input {
  width: 18px;
  height: 18px;
  margin-top: 3px;
}

.quick-form .button,
.quick-form .form-status {
  grid-column: 1 / -1;
}

.form-status {
  min-height: 22px;
  color: var(--coral-dark);
  font-weight: 800;
}

.network-section,
.scene-section {
  padding: 82px 0;
  background: var(--soft);
}

.section-head {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-head h2,
.consult-section h2,
.contact-band h2 {
  margin-top: 8px;
  font-size: 42px;
  font-weight: 900;
}

.section-head p:not(.eyebrow),
.consult-section p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 18px;
}

.network-logos {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 46px;
}

.service-grid article {
  min-height: 190px;
  display: grid;
  align-content: end;
  padding: 26px;
  border-radius: 18px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(52, 64, 116, 0.94), rgba(35, 97, 165, 0.78)),
    url("https://images.unsplash.com/photo-1558494949-ef010cbdcc31?auto=format&fit=crop&w=900&q=80") center/cover;
  box-shadow: var(--shadow);
}

.service-grid article:nth-child(2) {
  background:
    linear-gradient(135deg, rgba(236, 108, 89, 0.92), rgba(52, 64, 116, 0.72)),
    url("https://images.unsplash.com/photo-1512428559087-560fa5ceab42?auto=format&fit=crop&w=900&q=80") center/cover;
}

.service-grid article:nth-child(3) {
  background:
    linear-gradient(135deg, rgba(52, 64, 116, 0.94), rgba(101, 214, 199, 0.7)),
    url("https://images.unsplash.com/photo-1497366754035-f200968a6e72?auto=format&fit=crop&w=900&q=80") center/cover;
}

.service-grid article:nth-child(4) {
  background:
    linear-gradient(135deg, rgba(35, 97, 165, 0.9), rgba(236, 108, 89, 0.68)),
    url("https://images.unsplash.com/photo-1553877522-43269d4ea984?auto=format&fit=crop&w=900&q=80") center/cover;
}

.service-grid strong {
  color: #ffd8d2;
  font-size: 13px;
  text-transform: uppercase;
}

.service-grid h3 {
  margin-top: 8px;
  color: #fff;
  font-size: 26px;
}

.service-grid p {
  margin-top: 8px;
  color: #eef4ff;
}

.network-head {
  margin-bottom: 20px;
}

.network-logos article {
  min-height: 150px;
  display: grid;
  align-content: center;
  justify-items: start;
  gap: 18px;
  padding: 24px;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(23, 34, 70, 0.08);
}

.network-logos img {
  max-height: 46px;
  object-fit: contain;
}

.network-logos span {
  color: var(--muted);
  font-weight: 700;
}

.why-section {
  padding: 86px 0;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(52, 64, 116, 0.96), rgba(35, 97, 165, 0.88)),
    url("https://images.unsplash.com/photo-1558494949-ef010cbdcc31?auto=format&fit=crop&w=1800&q=84") center/cover;
}

.section-head.light h2 {
  color: #fff;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1px;
  overflow: hidden;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.18);
}

.why-grid article {
  min-height: 190px;
  padding: 26px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
}

.why-grid h3 {
  color: #fff;
  font-size: 24px;
}

.why-grid p {
  margin-top: 12px;
  color: #dfe8f8;
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.scene-grid article {
  overflow: hidden;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 14px 36px rgba(23, 34, 70, 0.1);
}

.scene-grid img {
  width: 100%;
  aspect-ratio: 1.12 / 1;
  object-fit: cover;
}

.scene-grid h3 {
  padding: 20px 20px 0;
  font-size: 22px;
}

.scene-grid p {
  padding: 8px 20px 22px;
  color: var(--muted);
}

.consult-section {
  padding: 84px 0;
  color: #fff;
  background: linear-gradient(135deg, var(--coral), #f08b65);
}

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

.consult-section p {
  max-width: 620px;
  color: #fff4f1;
}

.consult-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(340px, 1.1fr);
  gap: 44px;
  align-items: center;
}

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

.consult-list span {
  min-height: 74px;
  display: flex;
  align-items: center;
  padding: 16px 18px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  font-weight: 900;
}

.contact-section {
  padding: 70px 0;
  background: var(--navy);
}

.contact-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.contact-band h2 {
  max-width: 660px;
}

.site-footer {
  padding: 46px 0 22px;
  color: #d3dbef;
  background: #111a38;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.7fr 0.9fr;
  gap: 28px;
}

.footer-logo {
  width: 140px;
  filter: brightness(0) invert(1);
  opacity: 0.92;
}

.site-footer p {
  max-width: 460px;
  margin-top: 14px;
}

.site-footer strong,
.site-footer a {
  display: block;
}

.site-footer strong {
  color: #fff;
  margin-bottom: 10px;
}

.site-footer a {
  color: #d3dbef;
  margin-top: 8px;
}

.footer-bottom {
  margin-top: 32px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
}

.footer-bottom a {
  display: inline-flex;
  margin-top: 0;
}

.icp-note {
  color: #ffd3cc;
}

@media (max-width: 1080px) {
  .brand {
    min-width: 150px;
  }

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

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

}

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 12px 14px 16px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 15px 24px rgba(23, 34, 70, 0.1);
  }

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

  .nav a {
    justify-content: center;
  }

  .footer-grid,
  .contact-band {
    grid-template-columns: 1fr;
    display: grid;
    text-align: left;
  }

}

@media (max-width: 640px) {
  .container,
  .header-inner {
    width: min(100% - 28px, 1180px);
  }

  .brand-logo {
    width: 118px;
  }

  .hero {
    padding: 58px 0 68px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .lead {
    font-size: 17px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .consult-card {
    padding: 20px;
  }

  .field-grid,
  .quick-form,
  .service-grid,
  .network-logos,
  .why-grid,
  .scene-grid,
  .consult-list,
  .nav {
    grid-template-columns: 1fr;
  }

  .section-head h2,
  .consult-section h2,
  .contact-band h2 {
    font-size: 32px;
  }
}