:root {
  --bg: #eaf7ff;
  --surface: #f8fcff;
  --surface-soft: #f5fbff;
  --panel: #ffffff;
  --panel-soft: #dff2ff;
  --line: #cbe6f8;
  --line-strong: #b7ddf4;
  --text: #123b66;
  --text-soft: #5c7fa6;
  --text-muted: #7fa2c9;
  --brand: #3a94ff;
  --brand-soft: #b6e7ff;
  --brand-2: #63ccff;
  --teal: #57c79c;
  --amber: #ffc963;
  --navy: #0e223d;
  --navy-line: #27496e;
  --shadow: 0 20px 50px rgba(90, 152, 200, 0.12);
  --shadow-soft: 0 10px 30px rgba(110, 165, 210, 0.12);
  --radius: 24px;
  --radius-lg: 30px;
  --container: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
}

body:not(.is-loaded) .site-shell {
  opacity: 0;
  transform: translateY(18px);
}

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

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

.site-shell {
  min-height: 100vh;
  background:
    radial-gradient(circle at top right, rgba(99, 204, 255, 0.22), transparent 26%),
    linear-gradient(180deg, #f9fdff 0%, #eaf7ff 45%, #f5fbff 100%);
  transition: opacity 1.05s ease, transform 1.05s ease;
}

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

.site-header {
  background: #fff;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(183, 221, 244, 0.7);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 88px;
  gap: 24px;
}

.brand {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 15px;
  color: var(--text-soft);
}

.nav a:hover,
.nav a.active {
  color: var(--text);
}

.header-phone {
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: #fff;
  font: 600 15px/1.2 "IBM Plex Mono", Consolas, monospace;
  white-space: nowrap;
}

.hero {
  position: relative;
  overflow: hidden;
}

.hero-home {
  padding: 72px 0 68px;
  background: linear-gradient(120deg, #f6fcff 0%, #d9f1ff 55%, #a9e0ff 100%);
}

.hero-home::before,
.hero-home::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(30px);
}

.hero-home::before {
  width: 300px;
  height: 300px;
  right: 120px;
  top: 48px;
  background: rgba(127, 200, 255, 0.38);
}

.hero-home::after {
  width: 200px;
  height: 200px;
  right: 60px;
  bottom: 120px;
  background: rgba(182, 234, 255, 0.5);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--brand);
  font: 600 12px/1.4 "IBM Plex Mono", Consolas, monospace;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-title {
  margin: 0;
  font-size: clamp(40px, 5vw, 56px);
  line-height: 1.16;
  letter-spacing: -0.03em;
}

.hero-desc {
  margin: 18px 0 0;
  max-width: 620px;
  color: var(--text-soft);
  font-size: 18px;
  line-height: 1.8;
}

.hero-actions {
  margin-top: 28px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--amber);
  color: var(--text);
  box-shadow: var(--shadow-soft);
}

.btn-secondary {
  background: #fff;
  color: var(--text);
  border-color: #a9d5f3;
}

.hero-note {
  margin-top: 18px;
  color: #6e8fb2;
  font-size: 14px;
  line-height: 1.8;
  max-width: 620px;
}

.chip-grid {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 620px;
}

.insight-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid #cbe6f8;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow-soft);
}

.insight-chip img {
  width: 16px;
  height: 16px;
}

.hero-visual-stack {
  position: relative;
  display: block;
}

.dashboard-card {
  position: relative;
  padding: 28px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid #a9d5f3;
  box-shadow: 0 24px 60px rgba(113, 168, 214, 0.2);
}

.dashboard-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.dashboard-title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 16px;
  border-radius: 999px;
  background: #eaf5ff;
  border: 1px solid #a9d5f3;
  color: var(--brand);
  font: 600 12px/1.2 "IBM Plex Mono", Consolas, monospace;
}

.dashboard-panel {
  margin-top: 28px;
  border-radius: 20px;
  background: #f6fbff;
  padding: 20px;
}

.dashboard-preview {
  margin-top: 18px;
  border-radius: 18px;
  overflow: hidden;
  height: 164px;
}

.dashboard-preview-large {
  height: 238px;
}

.dashboard-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.dashboard-label {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 600;
}

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

.bar {
  height: 18px;
  border-radius: 999px;
  background: #d8e8ff;
  overflow: hidden;
}

.bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--brand) 0%, var(--brand-2) 100%);
}

.dashboard-floating {
  position: absolute;
  border-radius: 22px;
  box-shadow: var(--shadow-soft);
}

.score-card {
  left: -42px;
  bottom: 48px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px;
  background: #fff;
}

.score-icon {
  width: 26px;
  height: 26px;
  border-radius: 999px;
  background: linear-gradient(135deg, #63ccff 0%, #57c79c 100%);
}

.analytics-card {
  right: -20px;
  bottom: 10px;
  width: 246px;
  padding: 18px;
  background: #fff;
  border: 1px solid #c7e4f7;
}

.mini-chart {
  margin-top: 14px;
  height: 90px;
  display: flex;
  align-items: end;
  gap: 12px;
}

.mini-chart span {
  flex: 1;
  border-radius: 12px 12px 0 0;
}

.stat-row {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.stat-card {
  border-radius: 22px;
  background: #fff;
  border: 1px solid #c7e4f7;
  padding: 24px;
}

.stat-value {
  margin: 0;
  font: 700 32px/1.2 "IBM Plex Mono", Consolas, monospace;
}

.stat-label {
  margin: 8px 0 0;
  font-size: 14px;
  color: #6a89ad;
}

.section {
  padding: 92px 0;
}

.section-tight {
  padding: 36px 0;
}

.section-light {
  background: var(--surface-soft);
}

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

.section-blue {
  background: #eaf6ff;
}

.section-heading {
  margin-bottom: 42px;
}

.section-heading h2,
.section-heading h3 {
  margin: 10px 0 0;
  font-size: clamp(30px, 4vw, 40px);
  line-height: 1.24;
  letter-spacing: -0.03em;
}

.section-heading p {
  margin: 16px 0 0;
  max-width: 860px;
  color: var(--text-soft);
  font-size: 16px;
  line-height: 1.8;
}

.engine-row,
.logo-row,
.grid-3,
.grid-4 {
  display: grid;
  gap: 20px;
}

.engine-row {
  display: flex;
  gap: 20px;
  width: max-content;
  animation: engineDrift 16s ease-in-out infinite alternate;
}

.engine-marquee {
  overflow: hidden;
  padding: 6px 0;
}

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

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

.card,
.engine-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.engine-card {
  padding: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 188px;
}

.engine-icon {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font: 700 14px/1 "IBM Plex Mono", Consolas, monospace;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.service-card {
  padding: 28px;
}

.service-icon-visual {
  width: 28px;
  height: 28px;
}

.service-card h3 {
  margin: 18px 0 0;
  font-size: 28px;
}

.service-card p {
  margin: 14px 0 0;
  color: var(--text-soft);
  font-size: 16px;
  line-height: 1.8;
}

.service-icon {
  width: 54px;
  height: 54px;
  border-radius: 18px;
}

.split-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 28px;
}

.process-stack,
.result-card,
.serp-card,
.faq-list,
.sidebar-stack {
  display: grid;
  gap: 18px;
}

.process-board,
.result-board,
.serp-card,
.faq-card,
.cta-card,
.article-card,
.sidebar-card,
.content-card,
.contact-card,
.form-card,
.news-card {
  border-radius: 24px;
  border: 1px solid var(--line);
  background: #fff;
}

.process-board,
.result-board,
.serp-card {
  padding: 28px;
}

.process-step {
  background: #f3faff;
  border: 1px solid #d8ecf9;
  border-radius: 20px;
  padding: 20px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.7;
}

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

.result-stat {
  border-radius: 20px;
  background: #eef8ff;
  padding: 20px;
}

.result-stat p {
  margin: 0;
  font-size: 26px;
  line-height: 1.35;
  font-weight: 700;
}

.chart-box {
  background: #f4fbff;
  border-radius: 22px;
  padding: 18px;
}

.section-photo {
  margin-top: 18px;
  border-radius: 18px;
  overflow: hidden;
  height: 180px;
}

.section-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.big-chart {
  height: 220px;
  display: flex;
  align-items: flex-end;
  gap: 16px;
}

.big-chart span {
  flex: 1;
  border-radius: 14px 14px 0 0;
}

.exposure-layout,
.faq-layout,
.content-layout,
.contact-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 28px;
}

.exposure-list,
.contact-info-stack {
  display: grid;
  gap: 18px;
}

.exposure-feature,
.faq-card,
.contact-flow {
  padding: 24px;
}

.contact-flow {
  border-radius: 26px;
  border: 1px solid var(--line);
  background: #fff;
}

.feature-text,
.faq-card p,
.contact-flow p {
  margin: 0;
  font-size: 20px;
  line-height: 1.65;
  font-weight: 700;
}

.serp-item {
  padding: 18px 20px;
  border-radius: 18px;
  font-size: 18px;
  font-weight: 700;
  background: #f7fafd;
}

.serp-item.alt {
  background: #eef8ff;
}

.serp-preview {
  margin-top: 18px;
  border-radius: 18px;
  overflow: hidden;
  height: 190px;
}

.serp-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.case-card {
  padding: 28px;
}

.case-cover {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 18px;
  margin-bottom: 18px;
}

.case-card h3 {
  margin: 0;
  font-size: 24px;
  line-height: 1.5;
}

.case-card p {
  margin: 18px 0 0;
  color: var(--brand);
  font: 600 18px/1.6 "IBM Plex Mono", Consolas, monospace;
}

.faq-layout {
  grid-template-columns: 1fr 420px;
}

.faq-card {
  min-height: 132px;
}

.faq-card h3,
.cta-card h3,
.sidebar-card h3,
.form-card h3,
.content-card h3,
.contact-card h3,
.news-card h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.7;
  font-weight: 700;
}

.cta-card,
.sidebar-cta,
.contact-map {
  background: var(--panel-soft);
  padding: 30px;
}

.contact-map {
  border-radius: 26px;
}

.cta-card p,
.sidebar-card p,
.form-card p,
.content-card p,
.contact-card p,
.news-card p {
  margin: 14px 0 0;
  color: var(--text-soft);
  font-size: 16px;
  line-height: 1.8;
}

.bullet-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.bullet-list li {
  font-size: 16px;
  font-weight: 700;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  padding: 18px;
}

.news-thumb {
  height: 180px;
  border-radius: 18px;
  background: linear-gradient(135deg, #d7f0ff 0%, #a5dbff 100%);
  overflow: hidden;
}

.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-meta {
  margin-top: 18px;
  color: #6a89ad;
  font: 12px/1.4 "IBM Plex Mono", Consolas, monospace;
}

.page-hero {
  padding: 76px 0;
  background: linear-gradient(120deg, #f7fcff 0%, #ddf3ff 58%, #b9e8ff 100%);
}

.page-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(40px, 5vw, 54px);
  line-height: 1.16;
}

.page-hero p {
  margin: 18px 0 0;
  max-width: 860px;
  color: var(--text-soft);
  font-size: 18px;
  line-height: 1.7;
}

.content-wrap {
  padding: 72px 0 96px;
  background: var(--surface-soft);
}

.content-layout {
  grid-template-columns: 1fr 360px;
}

.article-list {
  display: grid;
  gap: 20px;
}

.article-card {
  padding: 24px;
}

.article-card .meta {
  margin: 0 0 10px;
  color: #6a89ad;
  font: 12px/1.5 "IBM Plex Mono", Consolas, monospace;
}

.article-card h2 {
  margin: 0;
  font-size: 26px;
  line-height: 1.45;
}

.article-card p {
  margin: 12px 0 0;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.85;
}

.pager {
  display: flex;
  justify-content: center;
  padding-top: 8px;
  color: var(--text-soft);
  font: 600 16px/1.2 "IBM Plex Mono", Consolas, monospace;
}

.sidebar-card,
.form-card {
  padding: 24px;
}

.sidebar-title {
  margin: 0;
  font-size: 18px;
}

.sidebar-list {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.9;
}

.sidebar-cta {
  border-radius: 24px;
}

.sidebar-cta h3 {
  font-size: 22px;
  line-height: 1.6;
}

.article-layout {
  padding: 72px 0 96px;
  background: var(--surface-soft);
}

.article-detail-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 28px;
}

.article-body {
  padding: 34px;
  border-radius: 26px;
  border: 1px solid var(--line);
  background: #fff;
}

.article-body p,
.article-body h2,
.article-body h3 {
  margin: 0 0 24px;
}

.article-body p {
  color: #355a84;
  font-size: 20px;
  line-height: 1.95;
}

.article-body h2 {
  font-size: 26px;
  line-height: 1.7;
}

.article-body h3 {
  font-size: 24px;
  line-height: 1.8;
}

.read-more {
  padding: 0 0 96px;
  background: var(--surface-soft);
}

.contact-panels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.contact-card {
  padding: 24px;
  min-height: 220px;
}

.contact-layout {
  grid-template-columns: 1fr 420px;
}

.contact-map {
  min-height: 320px;
}

.contact-form {
  padding: 30px;
}

.fake-fields {
  margin-top: 16px;
  color: var(--text);
  font-size: 20px;
  line-height: 2.1;
  font-weight: 700;
}

.site-footer {
  position: relative;
  background: var(--navy);
  color: #fff;
}

.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: var(--navy-line);
}

.site-footer .container {
  padding: 54px 0 44px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 360px 160px 220px;
  justify-content: space-between;
  gap: 24px;
}

.footer-grid h3,
.footer-grid p {
  margin: 0;
}

.footer-grid h3 {
  font-size: 18px;
  line-height: 1.8;
}

.footer-grid p {
  color: #99b8da;
  font-size: 16px;
  line-height: 1.9;
}

.footer-copy {
  margin-top: 30px;
  color: #7fa2c9;
  font: 12px/1.4 "IBM Plex Mono", Consolas, monospace;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.95s ease, transform 0.95s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes engineDrift {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-120px);
  }
}

@media (max-width: 1200px) {
  .hero-grid,
  .content-layout,
  .article-detail-layout,
  .faq-layout,
  .contact-layout,
  .split-layout,
  .exposure-layout {
    grid-template-columns: 1fr;
  }

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

  .service-grid,
  .grid-4,
  .grid-3,
  .news-grid,
  .case-grid,
  .contact-panels {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 860px) {
  .container {
    width: min(var(--container), calc(100% - 28px));
  }

  .site-header .container {
    min-height: 78px;
    flex-wrap: wrap;
    justify-content: center;
    padding: 12px 0;
  }

  .nav {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
  }

  .hero-home,
  .page-hero,
  .section,
  .content-wrap,
  .article-layout,
  .read-more {
    padding-top: 56px;
    padding-bottom: 56px;
  }

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

  .dashboard-floating {
    position: static;
    margin-top: 16px;
    width: auto;
  }

  .dashboard-preview,
  .section-photo,
  .serp-preview,
  .case-cover,
  .news-thumb {
    height: 200px;
  }

  .dashboard-preview-large {
    height: 220px;
  }

  .service-grid,
  .grid-4,
  .grid-3,
  .news-grid,
  .case-grid,
  .contact-panels,
  .engine-row,
  .result-stat-row,
  .stat-row {
    grid-template-columns: 1fr;
  }

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

  .article-body {
    padding: 24px;
  }

  .article-body p {
    font-size: 18px;
  }

  .engine-row {
    animation: none;
    width: auto;
    display: grid;
    grid-template-columns: 1fr;
  }
}