/* ==========================================================================
   51cg官网 — 企业数字化服务 · 业务范围与流程导航助手
   全站共享样式表
   ========================================================================== */

:root {
  --ink-900: #071a30;
  --ink-800: #0b2039;
  --ink-700: #14304f;
  --ink-600: #2b4a6b;
  --ink-500: #4d6885;
  --ink-400: #7389a3;

  --blue-700: #123f8f;
  --blue-600: #1a56c4;
  --blue-500: #2570e8;
  --blue-300: #7faaf7;
  --blue-50: #eef4ff;

  --teal-600: #0b8f8a;
  --teal-500: #10aaa4;
  --teal-300: #6fd6cf;

  --amber-500: #f0a33a;
  --paper: #ffffff;
  --paper-soft: #f4f7fc;
  --paper-line: #e2eaf5;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-sm: 0 2px 8px rgba(9, 30, 60, .06);
  --shadow-md: 0 12px 30px rgba(9, 30, 60, .09);
  --shadow-lg: 0 24px 60px rgba(9, 30, 60, .14);

  --container: 1180px;
  --transition: .35s cubic-bezier(.22, .61, .36, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  color: var(--ink-700);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  overflow-x: hidden;
}

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

a {
  color: var(--blue-600);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--teal-600);
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  color: var(--ink-900);
  line-height: 1.3;
  letter-spacing: -.01em;
  font-weight: 700;
}

:focus-visible {
  outline: 3px solid var(--teal-500);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  padding: 12px 20px;
  background: var(--ink-900);
  color: #fff;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  left: 0;
  color: #fff;
}

/* ============================ 顶部导航 ============================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(226, 234, 245, .9);
  transition: box-shadow var(--transition), background var(--transition);
}

.site-header.is-scrolled {
  box-shadow: 0 10px 30px rgba(9, 30, 60, .08);
  background: rgba(255, 255, 255, .96);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 74px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-900);
  flex-shrink: 0;
}

.brand:hover {
  color: var(--ink-900);
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--blue-600), var(--teal-500));
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  box-shadow: 0 8px 18px rgba(26, 86, 196, .25);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .02em;
}

.brand-sub {
  font-size: 12px;
  color: var(--ink-400);
  letter-spacing: .16em;
}

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.primary-nav a {
  position: relative;
  display: inline-block;
  padding: 9px 15px;
  border-radius: 999px;
  font-size: 15px;
  color: var(--ink-600);
  font-weight: 500;
  white-space: nowrap;
}

.primary-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--blue-600), var(--teal-500));
  transform: translateX(-50%);
  transition: width var(--transition);
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  color: var(--blue-700);
  background: var(--blue-50);
}

.primary-nav a:hover::after,
.primary-nav a[aria-current="page"]::after {
  width: 22px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--paper-line);
  background: #fff;
  border-radius: 12px;
  cursor: pointer;
  padding: 0;
  position: relative;
}

.nav-toggle span {
  position: absolute;
  left: 50%;
  width: 20px;
  height: 2px;
  background: var(--ink-700);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateX(-50%) translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateX(-50%) translateY(-6px) rotate(-45deg); }

/* ============================ 按钮 ============================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
  color: #fff;
  box-shadow: 0 12px 26px rgba(26, 86, 196, .28);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 18px 36px rgba(26, 86, 196, .34);
}

.btn-ghost {
  background: #fff;
  border-color: var(--paper-line);
  color: var(--ink-700);
  box-shadow: var(--shadow-sm);
}

.btn-ghost:hover {
  color: var(--blue-700);
  border-color: var(--blue-300);
  transform: translateY(-2px);
}

.btn-light {
  background: rgba(255, 255, 255, .14);
  border-color: rgba(255, 255, 255, .38);
  color: #fff;
}

.btn-light:hover {
  background: rgba(255, 255, 255, .24);
  color: #fff;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

/* ============================ 通用区块 ============================ */

.section {
  position: relative;
  padding: 96px 0;
}

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

.section-head {
  max-width: 760px;
  margin: 0 auto 56px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--blue-50);
  color: var(--blue-700);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  margin-bottom: 18px;
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal-500);
}

.section-head h2 {
  font-size: clamp(26px, 3.4vw, 40px);
  margin-bottom: 16px;
}

.section-head p {
  color: var(--ink-500);
  font-size: 16px;
}

.name-note {
  color: var(--ink-400);
  font-size: 13px;
}

/* ============================ Hero ============================ */

.hero {
  position: relative;
  overflow: hidden;
  padding: 100px 0 110px;
  background:
    radial-gradient(1000px 520px at 12% -10%, rgba(37, 112, 232, .18), transparent 62%),
    radial-gradient(900px 500px at 92% 8%, rgba(16, 170, 164, .16), transparent 60%),
    linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26, 86, 196, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 86, 196, .055) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 25%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 50% 25%, #000 0%, transparent 72%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(32px, 4.6vw, 56px);
  line-height: 1.18;
  margin-bottom: 22px;
  letter-spacing: -.02em;
}

.hero h1 .grad {
  background: linear-gradient(100deg, var(--blue-600), var(--teal-600));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  font-size: 17px;
  color: var(--ink-500);
  max-width: 590px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 560px;
  padding-top: 28px;
  border-top: 1px solid var(--paper-line);
}

.hero-stats .num {
  display: block;
  font-size: 26px;
  font-weight: 700;
  color: var(--ink-900);
  line-height: 1.2;
}

.hero-stats .num small {
  font-size: 14px;
  color: var(--ink-400);
  font-weight: 500;
  margin-left: 2px;
}

.hero-stats .label {
  font-size: 13px;
  color: var(--ink-400);
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 4 / 3.35;
  object-fit: cover;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.hero-float {
  position: absolute;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(10px);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 16px 18px;
  animation: floatY 6s ease-in-out infinite;
}

.hero-float-1 {
  left: -26px;
  bottom: 46px;
  width: 216px;
}

.hero-float-2 {
  right: -18px;
  top: 32px;
  width: 190px;
  animation-delay: -3s;
}

.hero-float strong {
  display: block;
  font-size: 14px;
  color: var(--ink-900);
  margin-bottom: 6px;
}

.hero-float span {
  font-size: 12.5px;
  color: var(--ink-400);
}

.mini-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 34px;
  margin-top: 10px;
}

.mini-bars i {
  display: block;
  flex: 1;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--blue-500), var(--teal-500));
  animation: growBar 3.6s ease-in-out infinite alternate;
}

.mini-bars i:nth-child(1) { height: 40%; animation-delay: 0s; }
.mini-bars i:nth-child(2) { height: 65%; animation-delay: .2s; }
.mini-bars i:nth-child(3) { height: 48%; animation-delay: .4s; }
.mini-bars i:nth-child(4) { height: 82%; animation-delay: .6s; }
.mini-bars i:nth-child(5) { height: 58%; animation-delay: .8s; }
.mini-bars i:nth-child(6) { height: 96%; animation-delay: 1s; }

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes growBar {
  from { transform: scaleY(.72); }
  to { transform: scaleY(1); }
}

/* ============================ 客户/指标条 ============================ */

.trust-strip {
  border-bottom: 1px solid var(--paper-line);
  background: #fff;
  padding: 26px 0;
}

.trust-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}

.trust-row p {
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--ink-400);
}

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

.trust-tags span {
  font-size: 13px;
  color: var(--ink-600);
  background: var(--paper-soft);
  border: 1px solid var(--paper-line);
  border-radius: 999px;
  padding: 7px 16px;
}

/* ============================ 特性卡片 ============================ */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.feature-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  padding: 32px 28px 30px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--blue-500), var(--teal-500));
  opacity: 0;
  transition: opacity var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: #cfe0f8;
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--blue-50);
  color: var(--blue-700);
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 26px;
  height: 26px;
}

.feature-card h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--ink-500);
  font-size: 15px;
}

.feature-card .card-meta {
  display: inline-block;
  margin-top: 16px;
  font-size: 13px;
  color: var(--teal-600);
  font-weight: 600;
}

/* ============================ 服务卡片 ============================ */

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.service-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  transition: transform var(--transition), box-shadow var(--transition);
  height: 100%;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.service-card .tag {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--teal-600);
  background: rgba(16, 170, 164, .1);
  border-radius: 999px;
  padding: 4px 10px;
  margin-bottom: 14px;
}

.service-card h3 {
  font-size: 17px;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14.5px;
  color: var(--ink-500);
  flex: 1;
}

.service-card .more {
  margin-top: 18px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--blue-600);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.service-card .more::after {
  content: "→";
  transition: transform var(--transition);
}

.service-card:hover .more::after {
  transform: translateX(4px);
}

/* ============================ 流程路线图 ============================ */

.route-map {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  counter-reset: step;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
}

.route-step {
  position: relative;
  padding: 34px 26px 32px;
  border-right: 1px dashed var(--paper-line);
  transition: background var(--transition);
}

.route-step:last-child {
  border-right: 0;
}

.route-step:hover {
  background: var(--blue-50);
}

.route-step .step-no {
  counter-increment: step;
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--ink-900);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
}

.route-step .step-no::before {
  content: "0" counter(step);
}

.route-step:hover .step-no {
  background: linear-gradient(135deg, var(--blue-600), var(--teal-500));
}

.route-step h3 {
  font-size: 17px;
  margin-bottom: 10px;
}

.route-step p {
  font-size: 14.5px;
  color: var(--ink-500);
}

.route-step .step-dur {
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--ink-400);
  display: inline-block;
  padding: 3px 10px;
  border: 1px solid var(--paper-line);
  border-radius: 999px;
}

/* ============================ 分栏内容 ============================ */

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
}

.split-media {
  position: relative;
}

.split-media img {
  width: 100%;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.split-media .badge-panel {
  position: absolute;
  right: -18px;
  bottom: -22px;
  width: 200px;
  padding: 18px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--paper-line);
  box-shadow: var(--shadow-md);
}

.badge-panel .badge-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--blue-700);
  line-height: 1.2;
}

.badge-panel p {
  font-size: 12.5px;
  color: var(--ink-400);
}

.split-body h2 {
  font-size: clamp(25px, 3vw, 36px);
  margin-bottom: 18px;
}

.split-body > p {
  color: var(--ink-500);
  margin-bottom: 26px;
}

.check-list {
  display: grid;
  gap: 14px;
  margin-bottom: 30px;
}

.check-list li {
  position: relative;
  padding-left: 34px;
  font-size: 15px;
  color: var(--ink-600);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(16, 170, 164, .12);
}

.check-list li::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  width: 8px;
  height: 5px;
  border-left: 2px solid var(--teal-600);
  border-bottom: 2px solid var(--teal-600);
  transform: rotate(-45deg);
}

.check-list li strong {
  color: var(--ink-900);
  font-weight: 600;
}

/* ============================ 数据统计 ============================ */

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.metric {
  text-align: center;
  padding: 30px 18px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--paper-line);
  transition: transform var(--transition), box-shadow var(--transition);
}

.metric:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.metric .value {
  font-size: 34px;
  font-weight: 700;
  color: var(--ink-900);
  line-height: 1.15;
}

.metric .value small {
  font-size: 15px;
  color: var(--teal-600);
  margin-left: 3px;
}

.metric p {
  font-size: 13.5px;
  color: var(--ink-400);
  margin-top: 6px;
}

/* ============================ FAQ ============================ */

.faq-layout {
  display: grid;
  grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr);
  gap: 48px;
  align-items: start;
}

.faq-aside {
  padding: 30px 26px;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--ink-900), var(--ink-700));
  color: #fff;
  position: sticky;
  top: 104px;
}

.faq-aside h2 {
  color: #fff;
  font-size: 24px;
  margin-bottom: 14px;
}

.faq-aside p {
  color: rgba(255, 255, 255, .68);
  font-size: 14.5px;
  margin-bottom: 22px;
}

.faq-aside .aside-line {
  border-top: 1px solid rgba(255, 255, 255, .14);
  padding-top: 18px;
  font-size: 13px;
  color: rgba(255, 255, 255, .55);
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-md);
  background: #fff;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-item[open] {
  border-color: #cfe0f8;
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  color: var(--ink-800);
  list-style: none;
  font-size: 15.5px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary .mark {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--paper-line);
  display: grid;
  place-items: center;
  color: var(--blue-600);
  font-size: 15px;
  transition: transform var(--transition), background var(--transition), color var(--transition);
}

.faq-item summary .mark::before {
  content: "+";
}

.faq-item[open] summary .mark {
  background: var(--blue-600);
  border-color: var(--blue-600);
  color: #fff;
  transform: rotate(45deg);
}

.faq-body {
  padding: 0 24px 22px;
  color: var(--ink-500);
  font-size: 14.8px;
  border-top: 1px dashed var(--paper-line);
  padding-top: 18px;
}

.faq-body strong {
  color: var(--ink-800);
}

/* ============================ CTA ============================ */

.cta {
  position: relative;
  overflow: hidden;
  padding: 90px 0;
  background: linear-gradient(115deg, var(--ink-900) 0%, #0e2b52 52%, #0a3e55 100%);
  color: #fff;
}

.cta::before,
.cta::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.cta::before {
  width: 520px;
  height: 520px;
  right: -140px;
  top: -220px;
  background: radial-gradient(circle, rgba(37, 112, 232, .42), transparent 65%);
}

.cta::after {
  width: 440px;
  height: 440px;
  left: -160px;
  bottom: -220px;
  background: radial-gradient(circle, rgba(16, 170, 164, .38), transparent 65%);
}

.cta-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: 48px;
  align-items: center;
}

.cta h2 {
  color: #fff;
  font-size: clamp(28px, 3.6vw, 42px);
  margin-bottom: 18px;
}

.cta p {
  color: rgba(255, 255, 255, .72);
  font-size: 16px;
  max-width: 540px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.cta-panel {
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(6px);
}

.cta-panel h3 {
  color: #fff;
  font-size: 17px;
  margin-bottom: 16px;
}

.cta-panel dl {
  display: grid;
  gap: 12px;
}

.cta-panel dt {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: rgba(255, 255, 255, .5);
}

.cta-panel dd {
  font-size: 15px;
  color: rgba(255, 255, 255, .9);
}

.cta-panel dd + dt {
  margin-top: 6px;
}

/* ============================ 子页面横幅 ============================ */

.page-hero {
  position: relative;
  overflow: hidden;
  padding: 78px 0 66px;
  background:
    radial-gradient(760px 420px at 88% 0%, rgba(16, 170, 164, .14), transparent 60%),
    radial-gradient(760px 420px at 6% 10%, rgba(37, 112, 232, .16), transparent 60%),
    linear-gradient(180deg, #f6faff, #ffffff);
  border-bottom: 1px solid var(--paper-line);
}

.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  gap: 44px;
  align-items: center;
}

.page-hero h1 {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.22;
  margin-bottom: 18px;
}

.page-hero .lead {
  color: var(--ink-500);
  max-width: 620px;
  margin-bottom: 26px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-400);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--ink-500);
}

.breadcrumb a:hover {
  color: var(--blue-600);
}

.breadcrumb li::after {
  content: "/";
  margin-left: 8px;
  color: var(--ink-400);
}

.breadcrumb li:last-child::after {
  display: none;
}

.breadcrumb li[aria-current="page"] {
  color: var(--blue-700);
  font-weight: 600;
}

.page-hero-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-chips span {
  font-size: 13px;
  padding: 7px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--paper-line);
  color: var(--ink-600);
  box-shadow: var(--shadow-sm);
}

/* ============================ 内容排版 ============================ */

.prose {
  max-width: 800px;
}

.prose h2 {
  font-size: 26px;
  margin: 40px 0 16px;
}

.prose h3 {
  font-size: 19px;
  margin: 28px 0 12px;
}

.prose p {
  margin-bottom: 16px;
  color: var(--ink-600);
}

.prose ul {
  margin: 0 0 20px;
  display: grid;
  gap: 10px;
}

.prose ul li {
  position: relative;
  padding-left: 20px;
  color: var(--ink-600);
}

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal-500);
}

.prose blockquote {
  margin: 24px 0;
  padding: 18px 22px;
  border-left: 3px solid var(--blue-500);
  background: var(--blue-50);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink-700);
  font-size: 15px;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  font-size: 13.5px;
  color: var(--ink-400);
  margin-bottom: 24px;
}

.article-meta .pill {
  background: var(--blue-50);
  color: var(--blue-700);
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 600;
}

.article-figure {
  margin: 0 0 28px;
}

.article-figure img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.article-figure figcaption {
  font-size: 13px;
  color: var(--ink-400);
  margin-top: 10px;
  text-align: center;
}

.side-card {
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-md);
  background: #fff;
  padding: 24px;
  margin-bottom: 20px;
}

.side-card h3 {
  font-size: 16px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--paper-line);
}

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

.side-card ul a {
  font-size: 14px;
  color: var(--ink-600);
  display: block;
  line-height: 1.6;
}

.side-card ul a:hover {
  color: var(--blue-600);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud a {
  font-size: 12.5px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--paper-soft);
  border: 1px solid var(--paper-line);
  color: var(--ink-500);
}

.tag-cloud a:hover {
  background: var(--blue-50);
  color: var(--blue-700);
  border-color: var(--blue-300);
}

.toc ol {
  display: grid;
  gap: 10px;
  counter-reset: toc;
}

.toc li {
  counter-increment: toc;
  font-size: 14px;
  color: var(--ink-500);
  padding-left: 26px;
  position: relative;
}

.toc li::before {
  content: counter(toc, decimal-leading-zero);
  position: absolute;
  left: 0;
  color: var(--teal-600);
  font-weight: 600;
  font-size: 12.5px;
}

/* ============================ 新闻列表 ============================ */

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}

.news-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.news-card .thumb {
  position: relative;
  overflow: hidden;
}

.news-card .thumb img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform .6s ease;
}

.news-card:hover .thumb img {
  transform: scale(1.06);
}

.news-card .thumb .chip {
  position: absolute;
  left: 14px;
  top: 14px;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .94);
  color: var(--blue-700);
}

.news-card .body {
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-card time {
  font-size: 12.5px;
  color: var(--ink-400);
  margin-bottom: 8px;
}

.news-card h3 {
  font-size: 17.5px;
  line-height: 1.5;
  margin-bottom: 10px;
}

.news-card h3 a {
  color: var(--ink-900);
}

.news-card h3 a:hover {
  color: var(--blue-700);
}

.news-card p {
  font-size: 14px;
  color: var(--ink-500);
  flex: 1;
}

.news-card .read {
  margin-top: 16px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--teal-600);
}

.news-card.featured {
  grid-column: span 2;
  flex-direction: row;
}

.news-card.featured .thumb {
  flex: 0 0 48%;
}

.news-card.featured .thumb img {
  height: 100%;
  aspect-ratio: auto;
}

/* ============================ 筛选标签 ============================ */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
  justify-content: center;
}

.filter-bar button {
  font-family: inherit;
  font-size: 14px;
  padding: 9px 20px;
  border-radius: 999px;
  border: 1px solid var(--paper-line);
  background: #fff;
  color: var(--ink-600);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-bar button:hover {
  border-color: var(--blue-300);
  color: var(--blue-700);
}

.filter-bar button.is-active {
  background: var(--ink-900);
  border-color: var(--ink-900);
  color: #fff;
}

/* ============================ 页面内容 - 关于 ============================ */

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

.value-card {
  padding: 28px 24px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--paper-line);
  border-top: 3px solid var(--blue-500);
}

.value-card:nth-child(2) { border-top-color: var(--teal-500); }
.value-card:nth-child(3) { border-top-color: var(--amber-500); }

.value-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.value-card p {
  font-size: 14.5px;
  color: var(--ink-500);
}

.timeline {
  position: relative;
  display: grid;
  gap: 28px;
  padding-left: 34px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--blue-500), var(--teal-500));
  opacity: .35;
}

.timeline li {
  position: relative;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--blue-500);
}

.timeline .year {
  font-size: 13px;
  font-weight: 700;
  color: var(--teal-600);
  letter-spacing: .06em;
  display: block;
  margin-bottom: 4px;
}

.timeline h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.timeline p {
  font-size: 14.5px;
  color: var(--ink-500);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.team-card {
  text-align: center;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-md);
  padding: 26px 18px;
  background: #fff;
  transition: transform var(--transition), box-shadow var(--transition);
}

.team-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.team-card .avatar {
  width: 72px;
  height: 72px;
  margin: 0 auto 16px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--blue-50);
}

.team-card .avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-card h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.team-card span {
  font-size: 12.5px;
  color: var(--ink-400);
  display: block;
  margin-bottom: 8px;
}

.team-card p {
  font-size: 13.5px;
  color: var(--ink-500);
}

/* ============================ 联系页 ============================ */

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: 44px;
  align-items: start;
}

.form-card {
  background: #fff;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  padding: 34px;
  box-shadow: var(--shadow-sm);
}

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

.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

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

.field label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-700);
}

.field input,
.field select,
.field textarea {
  font-family: inherit;
  font-size: 14.5px;
  color: var(--ink-800);
  padding: 12px 14px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-sm);
  background: #fbfdff;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.field textarea {
  min-height: 120px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: 0 0 0 4px rgba(37, 112, 232, .12);
}

.form-note {
  font-size: 12.5px;
  color: var(--ink-400);
  margin-top: 14px;
}

.form-status {
  margin-top: 14px;
  font-size: 14px;
  color: var(--teal-600);
  font-weight: 600;
  min-height: 22px;
}

.contact-cards {
  display: grid;
  gap: 16px;
}

.contact-card {
  display: flex;
  gap: 16px;
  padding: 22px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--paper-line);
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.contact-card .icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--blue-50);
  color: var(--blue-700);
}

.contact-card .icon svg {
  width: 22px;
  height: 22px;
}

.contact-card h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.contact-card p {
  font-size: 14px;
  color: var(--ink-500);
}

.contact-card .strong {
  color: var(--ink-800);
  font-weight: 600;
}

.map-panel {
  margin-top: 20px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--paper-line);
}

.map-panel img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(.85);
}

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

.office {
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-md);
  padding: 22px;
  background: #fff;
}

.office h3 {
  font-size: 15.5px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.office h3 .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal-500);
}

.office p {
  font-size: 13.8px;
  color: var(--ink-500);
}

/* ============================ 表格 ============================ */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-md);
  background: #fff;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

.data-table th,
.data-table td {
  padding: 15px 18px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--paper-line);
}

.data-table th {
  background: var(--paper-soft);
  color: var(--ink-800);
  font-weight: 600;
  white-space: nowrap;
}

.data-table td {
  color: var(--ink-600);
}

.data-table tbody tr:hover {
  background: #fbfdff;
}

.data-table tbody tr:last-child td {
  border-bottom: 0;
}

/* ============================ 页脚 ============================ */

.site-footer {
  background: var(--ink-900);
  color: rgba(255, 255, 255, .66);
  padding: 68px 0 26px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}

.site-footer .brand {
  color: #fff;
  margin-bottom: 16px;
}

.brand-mark--footer {
  background: linear-gradient(135deg, var(--blue-500), var(--teal-500));
}

.footer-about p {
  font-size: 14px;
  color: rgba(255, 255, 255, .6);
  max-width: 330px;
  margin-bottom: 18px;
}

.footer-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-badges span {
  font-size: 12px;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 999px;
  padding: 5px 12px;
  color: rgba(255, 255, 255, .7);
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 18px;
  letter-spacing: .04em;
}

.footer-col ul {
  display: grid;
  gap: 11px;
}

.footer-col a {
  color: rgba(255, 255, 255, .62);
  font-size: 14px;
}

.footer-col a:hover {
  color: #fff;
}

.footer-col li {
  font-size: 14px;
  color: rgba(255, 255, 255, .55);
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 13px;
  color: rgba(255, 255, 255, .45);
}

.footer-bottom p {
  line-height: 1.7;
}

/* ============================ 返回顶部 ============================ */

.to-top {
  position: fixed;
  right: 24px;
  bottom: 28px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--paper-line);
  background: #fff;
  color: var(--blue-700);
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition);
  z-index: 90;
  font-size: 18px;
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover {
  color: #fff;
  background: var(--blue-600);
  border-color: var(--blue-600);
}

/* ============================ 滚动渐入 ============================ */

[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s ease, transform .8s cubic-bezier(.22, .61, .36, 1);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

[data-reveal-delay="1"] { transition-delay: .08s; }
[data-reveal-delay="2"] { transition-delay: .16s; }
[data-reveal-delay="3"] { transition-delay: .24s; }
[data-reveal-delay="4"] { transition-delay: .32s; }
[data-reveal-delay="5"] { transition-delay: .4s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* ============================ 响应式 ============================ */

@media (max-width: 1080px) {
  .feature-grid,
  .news-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .service-grid,
  .metrics,
  .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .route-map {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .route-step:nth-child(2n) {
    border-right: 0;
  }
  .route-step:nth-child(-n + 2) {
    border-bottom: 1px dashed var(--paper-line);
  }
  .news-card.featured {
    grid-column: span 2;
  }
  .footer-grid {
    grid-template-columns: 1.3fr 1fr 1fr;
  }
  .footer-about {
    grid-column: 1 / -1;
  }
  .article-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .faq-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .faq-aside {
    position: static;
  }
}

@media (max-width: 900px) {
  .primary-nav {
    position: fixed;
    left: 0;
    right: 0;
    top: 74px;
    background: #fff;
    border-bottom: 1px solid var(--paper-line);
    box-shadow: var(--shadow-md);
    padding: 12px 18px 20px;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    max-height: calc(100vh - 74px);
    overflow-y: auto;
  }
  .primary-nav.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
  }
  .primary-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .primary-nav a {
    display: block;
    padding: 12px 16px;
    border-radius: 10px;
  }
  .primary-nav a::after {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .header-actions .btn {
    display: none;
  }
  .hero-grid,
  .split,
  .cta-inner,
  .page-hero-grid,
  .contact-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }
  .hero {
    padding: 66px 0 80px;
  }
  .hero-visual {
    order: -1;
  }
  .hero-visual img {
    aspect-ratio: 16 / 10;
  }
  .hero-float-1 {
    left: 12px;
    bottom: -24px;
  }
  .hero-float-2 {
    display: none;
  }
  .split-media .badge-panel {
    right: 12px;
    bottom: -18px;
  }
  .section {
    padding: 72px 0;
  }
  .trust-row {
    justify-content: flex-start;
  }
  .value-grid,
  .office-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .news-card.featured {
    flex-direction: column;
    grid-column: span 1;
  }
  .news-card.featured .thumb {
    flex: none;
  }
  .news-card.featured .thumb img {
    aspect-ratio: 16 / 10;
    height: auto;
  }
  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }
  .container {
    padding: 0 18px;
  }
  .brand-sub {
    display: none;
  }
  .brand-name {
    font-size: 16px;
  }
  .feature-grid,
  .service-grid,
  .news-grid,
  .team-grid,
  .value-grid,
  .office-list,
  .metrics,
  .form-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .route-map {
    grid-template-columns: minmax(0, 1fr);
  }
  .route-step {
    border-right: 0;
    border-bottom: 1px dashed var(--paper-line);
  }
  .route-step:last-child {
    border-bottom: 0;
  }
  .hero h1 {
    font-size: 30px;
  }
  .hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }
  .hero-stats .num {
    font-size: 20px;
  }
  .hero-stats .label {
    font-size: 11.5px;
  }
  .hero-float {
    display: none;
  }
  .section-head {
    margin-bottom: 38px;
  }
  .section {
    padding: 58px 0;
  }
  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .form-card {
    padding: 24px 20px;
  }
  .to-top {
    right: 16px;
    bottom: 18px;
    width: 42px;
    height: 42px;
  }
  .article-meta {
    font-size: 12.5px;
  }
  .cta {
    padding: 64px 0;
  }
}

/* ============================ 打印 ============================ */

@media print {
  .site-header,
  .to-top,
  .cta,
  .site-footer {
    display: none;
  }
  body {
    color: #000;
  }
  .section {
    padding: 24px 0;
  }
}