/* =========================================================
   Vector X 官网 · 静态站点样式
   品牌基准：docs/conventions/vector-x-brand-colors.md
   视觉语言：docs/conventions/vector-x-visual-language.md
   ========================================================= */

:root {
  /* 品牌色 */
  --navy-deep: #0B1B30;
  --navy: #10233F;
  --navy-soft: #12304C;
  --teal: #108B96;
  --teal-deep: #0E7A84;
  --ai: #63D2C7;
  --porcelain: #F3F8F7;
  --deco: #6BA496;
  --ink: #172638;
  --muted: #56697A;
  --muted-light: #7C8B97;
  --line: rgba(23, 38, 56, 0.09);
  --line-strong: rgba(23, 38, 56, 0.14);
  --white: #FFFFFF;

  /* 排版 */
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-num: "SF Pro Display", "DIN Alternate", "Helvetica Neue", Arial, sans-serif;

  /* 布局 */
  --container: 1180px;
  --header-h: 72px;
  --radius-lg: 24px;
  --radius-md: 20px;
  --radius-sm: 14px;

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

ul,
ol,
dl,
dd {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

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

h1,
h2,
h3 {
  text-wrap: balance;
}

::selection {
  background: rgba(99, 210, 199, 0.35);
  color: var(--navy-deep);
}

:focus-visible {
  outline: 2px solid var(--ai);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--teal);
  color: #fff;
  font-size: 14px;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 12px;
}

/* =========================================================
   通用元素：按钮 / 眉题 / 标题
   ========================================================= */

.btn {
  --btn-h: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: var(--btn-h);
  padding: 0 22px;
  border-radius: 12px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease),
    background-color 0.18s var(--ease), border-color 0.18s var(--ease),
    color 0.18s var(--ease);
}

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

.btn:active {
  transform: translateY(0);
}

.btn--sm {
  --btn-h: 38px;
  padding: 0 18px;
  font-size: 13.5px;
  border-radius: 10px;
}

.btn--lg {
  --btn-h: 50px;
  padding: 0 28px;
  font-size: 15px;
  border-radius: 13px;
}

.btn--block {
  width: 100%;
}

.btn--primary {
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-deep) 100%);
  color: #fff;
  box-shadow: 0 10px 24px -12px rgba(16, 139, 150, 0.65),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.btn--primary:hover {
  box-shadow: 0 14px 30px -12px rgba(16, 139, 150, 0.75),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.btn--ghost {
  color: var(--ink);
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.55);
}

.btn--ghost:hover {
  border-color: rgba(16, 139, 150, 0.4);
  background: rgba(255, 255, 255, 0.9);
}

.hero .btn--ghost {
  color: #EAF2F3;
  border-color: rgba(234, 242, 243, 0.28);
  background: rgba(255, 255, 255, 0.04);
}

.hero .btn--ghost:hover {
  border-color: rgba(99, 210, 199, 0.6);
  background: rgba(255, 255, 255, 0.1);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--teal);
  text-transform: uppercase;
}

.eyebrow--light {
  color: var(--ai);
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ai);
  box-shadow: 0 0 0 4px rgba(99, 210, 199, 0.16);
}

.section {
  padding: 108px 0;
}

.section--porcelain {
  background: linear-gradient(180deg, var(--porcelain) 0%, #F7FBFA 100%);
}

.section--dark {
  position: relative;
  background: linear-gradient(155deg, var(--navy-deep) 0%, var(--navy) 52%, var(--navy-soft) 100%);
  color: #EAF2F3;
  overflow: hidden;
}

.section-head {
  max-width: 720px;
  margin-bottom: 56px;
}

.section-head h2 {
  margin-top: 14px;
  font-size: clamp(28px, 3.3vw, 40px);
  line-height: 1.24;
  letter-spacing: -0.012em;
  font-weight: 650;
  color: var(--navy);
}

.section-head--light h2 {
  color: #F6FAFA;
}

.section-lede {
  margin-top: 16px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--muted);
}

.section-head--light .section-lede {
  color: rgba(234, 242, 243, 0.7);
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  transition: background-color 0.24s var(--ease), box-shadow 0.24s var(--ease),
    border-color 0.24s var(--ease);
  border-bottom: 1px solid transparent;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-logo {
  height: 26px;
  width: auto;
}

.brand-logo--dark {
  display: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  margin-left: auto;
  margin-right: 8px;
}

.site-nav a {
  position: relative;
  font-size: 14px;
  color: rgba(234, 242, 243, 0.78);
  padding: 6px 0;
  transition: color 0.18s var(--ease);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--ai);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s var(--ease);
}

.site-nav a:hover {
  color: #fff;
}

.site-nav a:hover::after {
  transform: scaleX(1);
}

.site-nav .nav-cta {
  display: none;
}

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

.site-header.scrolled {
  background: rgba(251, 253, 252, 0.92);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  backdrop-filter: blur(14px) saturate(120%);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 30px -24px rgba(11, 27, 48, 0.4);
}

.site-header.scrolled .brand-logo--light {
  display: none;
}

.site-header.scrolled .brand-logo--dark {
  display: block;
}

.site-header.scrolled .site-nav a {
  color: #46586A;
}

.site-header.scrolled .site-nav a:hover {
  color: var(--teal);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(234, 242, 243, 0.3);
  border-radius: 11px;
  background: transparent;
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 17px;
  height: 1.8px;
  border-radius: 2px;
  background: #EAF2F3;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.site-header.scrolled .nav-toggle,
.nav-open .nav-toggle {
  border-color: var(--line-strong);
}

.site-header.scrolled .nav-toggle span,
.nav-open .nav-toggle span {
  background: var(--navy);
}

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

.hero {
  position: relative;
  padding: calc(var(--header-h) + 92px) 0 104px;
  background: linear-gradient(158deg, var(--navy-deep) 0%, var(--navy) 54%, var(--navy-soft) 100%);
  color: #EAF2F3;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(10px);
}

.hero-glow--1 {
  width: 720px;
  height: 720px;
  right: -180px;
  top: -260px;
  background: radial-gradient(circle, rgba(16, 139, 150, 0.34) 0%, rgba(16, 139, 150, 0) 66%);
}

.hero-glow--2 {
  width: 620px;
  height: 620px;
  left: -240px;
  bottom: -320px;
  background: radial-gradient(circle, rgba(99, 210, 199, 0.2) 0%, rgba(99, 210, 199, 0) 68%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(234, 242, 243, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(234, 242, 243, 0.05) 1px, transparent 1px);
  background-size: 78px 78px;
  -webkit-mask-image: radial-gradient(circle at 62% 34%, #000 0%, transparent 72%);
  mask-image: radial-gradient(circle at 62% 34%, #000 0%, transparent 72%);
}

.hero-coin {
  position: absolute;
  right: -60px;
  bottom: -120px;
  width: 520px;
  opacity: 0.07;
  filter: saturate(120%);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  align-items: center;
  gap: 64px;
}

.hero-copy h1 {
  margin-top: 22px;
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.22;
  letter-spacing: -0.018em;
  font-weight: 650;
  color: #FAFDFD;
}

.hero-copy h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--ai) 0%, #9DE6D8 60%, var(--deco) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--ai);
}

.hero-lede {
  margin-top: 22px;
  max-width: 520px;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(234, 242, 243, 0.72);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid rgba(234, 242, 243, 0.14);
}

.hero-points li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.01em;
  color: rgba(234, 242, 243, 0.76);
}

.hero-points svg {
  color: var(--ai);
  flex-shrink: 0;
}

/* Hero 右侧产品界面示意 */

.hero-visual {
  position: relative;
}

.dash {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(243, 248, 247, 0.96) 100%);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 50px 90px -40px rgba(2, 10, 20, 0.72),
    0 0 0 1px rgba(255, 255, 255, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  color: var(--ink);
  overflow: hidden;
}

.dash-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 44px;
  padding: 0 16px;
  border-bottom: 1px solid rgba(23, 38, 56, 0.07);
  background: rgba(255, 255, 255, 0.72);
}

.dash-dots {
  display: inline-flex;
  gap: 6px;
}

.dash-dots i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #D8E2E1;
}

.dash-dots i:nth-child(1) {
  background: #E4C9C0;
}

.dash-dots i:nth-child(2) {
  background: #E7DCC0;
}

.dash-title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #41525F;
}

.dash-chip {
  margin-left: auto;
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid rgba(23, 38, 56, 0.12);
  font-size: 10.5px;
  color: var(--muted-light);
  letter-spacing: 0.04em;
}

.dash-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
}

.dash-kpis {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 10px;
}

.dash-kpi {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 13px;
  border-radius: 13px;
  background: #fff;
  border: 1px solid rgba(23, 38, 56, 0.07);
}

.dash-kpi-label {
  font-size: 10.5px;
  color: var(--muted-light);
  letter-spacing: 0.02em;
}

.dash-kpi strong {
  font-family: var(--font-num);
  font-size: 21px;
  font-weight: 650;
  letter-spacing: -0.01em;
  color: var(--navy);
  line-height: 1.25;
  font-variant-numeric: tabular-nums;
}

.dash-kpi .unit {
  margin-left: 2px;
  font-family: var(--font-sans);
  font-size: 11.5px;
  font-weight: 500;
  color: var(--muted-light);
}

.dash-trend {
  font-size: 10.5px;
  font-weight: 600;
  color: var(--teal);
}

.dash-sub {
  font-size: 10.5px;
  color: var(--muted-light);
}

.dash-panel {
  padding: 13px 15px 15px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(23, 38, 56, 0.07);
}

.dash-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11.5px;
  font-weight: 600;
  color: #33455A;
}

.dash-muted {
  font-weight: 500;
  color: var(--muted-light);
  font-size: 10.5px;
}

.dash-legend {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  font-weight: 500;
  color: var(--muted-light);
}

.dash-legend i {
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--ai), var(--teal));
}

.dash-bars {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 86px;
  margin-top: 14px;
}

.dash-bars span {
  flex: 1;
  height: var(--h, 50%);
  border-radius: 6px 6px 3px 3px;
  background: linear-gradient(180deg, rgba(99, 210, 199, 0.85) 0%, rgba(16, 139, 150, 0.75) 100%);
  opacity: 0.42;
}

.dash-bars span.is-active {
  opacity: 1;
  box-shadow: 0 8px 18px -12px rgba(16, 139, 150, 0.9);
}

.dash-axis {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 9.5px;
  color: #93A1AB;
  letter-spacing: 0.02em;
}

.dash-row {
  display: grid;
  grid-template-columns: 62px 1fr 36px;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  font-size: 11px;
  color: #46586A;
}

.dash-track {
  display: block;
  height: 6px;
  border-radius: 999px;
  background: #EDF3F1;
  overflow: hidden;
}

.dash-track i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal), var(--ai));
}

.dash-row b {
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 600;
  color: #41525F;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.float-card {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 18px 40px -22px rgba(2, 12, 24, 0.6);
  font-size: 12px;
  font-weight: 500;
  color: #33455A;
  white-space: nowrap;
  animation: float 6s var(--ease) infinite;
}

.float-card svg {
  color: var(--teal);
  flex-shrink: 0;
}

.float-card--policy {
  top: 34px;
  left: -34px;
}

.float-card--chain {
  bottom: -18px;
  right: -18px;
  animation-delay: -3s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

/* =========================================================
   特点条
   ========================================================= */

.strip {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.strip-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  padding: 30px 28px;
}

.strip-item {
  position: relative;
  padding-left: 20px;
}

.strip-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  bottom: 5px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--ai), var(--teal));
  opacity: 0.7;
}

.strip-item strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: 0.01em;
}

.strip-item span {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  color: var(--muted);
}

/* =========================================================
   核心能力卡片
   ========================================================= */

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 26px 26px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid rgba(23, 38, 56, 0.07);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset,
    0 18px 40px -36px rgba(11, 27, 48, 0.35);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease),
    border-color 0.18s var(--ease);
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: rgba(16, 139, 150, 0.24);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset,
    0 26px 50px -34px rgba(11, 27, 48, 0.42);
}

.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  color: var(--teal);
  background: linear-gradient(135deg, rgba(16, 139, 150, 0.12) 0%, rgba(99, 210, 199, 0.2) 100%);
  border: 1px solid rgba(16, 139, 150, 0.14);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-card h3 {
  margin-top: 18px;
  font-size: 17.5px;
  font-weight: 650;
  letter-spacing: 0.005em;
  color: var(--navy);
}

.feature-card p {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}

.feature-list {
  margin-top: auto;
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.feature-list li {
  position: relative;
  padding-left: 15px;
  font-size: 12.5px;
  color: #46586A;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--teal);
  opacity: 0.65;
}

/* =========================================================
   流程
   ========================================================= */

.process-glow {
  position: absolute;
  width: 640px;
  height: 640px;
  right: -220px;
  bottom: -320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(16, 139, 150, 0.28) 0%, rgba(16, 139, 150, 0) 66%);
  pointer-events: none;
}

.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 22px;
  position: relative;
}

.step {
  position: relative;
  padding-top: 26px;
  border-top: 1px solid rgba(234, 242, 243, 0.16);
}

.step::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ai);
  box-shadow: 0 0 0 4px rgba(99, 210, 199, 0.14);
}

.step-no {
  display: block;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--ai);
}

.step h3 {
  margin-top: 12px;
  font-size: 16.5px;
  font-weight: 600;
  color: #F4F9F9;
}

.step p {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.85;
  color: rgba(234, 242, 243, 0.65);
}

/* =========================================================
   适用场景
   ========================================================= */

.solutions-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 72px;
  align-items: start;
}

.solutions-intro h2 {
  margin-top: 14px;
  font-size: clamp(28px, 3.1vw, 38px);
  line-height: 1.26;
  letter-spacing: -0.012em;
  font-weight: 650;
  color: var(--navy);
}

.solutions-intro .section-lede {
  max-width: 420px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
  transition: gap 0.18s var(--ease), color 0.18s var(--ease);
}

.text-link:hover {
  gap: 12px;
  color: var(--teal-deep);
}

.solutions-list {
  display: flex;
  flex-direction: column;
}

.solution-item {
  display: flex;
  gap: 22px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.solution-item:last-child {
  border-bottom: 1px solid var(--line);
}

.solution-num {
  flex-shrink: 0;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--deco);
  padding-top: 4px;
}

.solution-item h3 {
  font-size: 18px;
  font-weight: 650;
  color: var(--navy);
}

.solution-item p {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* =========================================================
   合规与可信
   ========================================================= */

.compliance-layout {
  display: grid;
  grid-template-columns: 1fr 0.92fr;
  gap: 72px;
  align-items: center;
}

.compliance-copy h2 {
  margin-top: 14px;
  font-size: clamp(28px, 3.1vw, 38px);
  line-height: 1.26;
  letter-spacing: -0.012em;
  font-weight: 650;
  color: var(--navy);
}

.check-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 30px;
}

.check-list li {
  display: flex;
  gap: 12px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.check-list svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--teal);
}

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

.chain-card {
  padding: 26px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid rgba(23, 38, 56, 0.08);
  box-shadow: 0 30px 60px -44px rgba(11, 27, 48, 0.5);
}

.chain-head {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  font-weight: 600;
  color: var(--navy);
}

.chain-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px rgba(16, 139, 150, 0.12);
}

.chain-badge {
  margin-left: auto;
  padding: 2px 9px;
  border-radius: 999px;
  background: rgba(16, 139, 150, 0.1);
  color: var(--teal);
  font-size: 10.5px;
  font-weight: 600;
}

.chain-list {
  margin-top: 8px;
}

.chain-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px dashed rgba(23, 38, 56, 0.1);
  font-size: 13px;
  color: #37495C;
}

.chain-icon {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(16, 139, 150, 0.1);
  color: var(--teal);
  font-family: var(--font-num);
  font-size: 10.5px;
  font-weight: 600;
}

.chain-list i {
  margin-left: auto;
  font-style: normal;
  font-size: 11px;
  color: var(--teal);
  letter-spacing: 0.02em;
}

.chain-foot {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--muted-light);
}

.chain-progress {
  flex: 1;
  height: 6px;
  border-radius: 999px;
  background: #EDF3F1;
  overflow: hidden;
}

.chain-progress i {
  display: block;
  width: 98%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal), var(--ai));
}

/* =========================================================
   关于我们
   ========================================================= */

.about-layout {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 72px;
  align-items: center;
}

.about-copy h2 {
  margin-top: 14px;
  font-size: clamp(28px, 3.1vw, 38px);
  line-height: 1.26;
  letter-spacing: -0.012em;
  font-weight: 650;
  color: var(--navy);
}

.about-lede {
  margin-top: 18px;
  font-size: 15px;
  line-height: 1.95;
  color: var(--muted);
  max-width: 560px;
}

.about-points {
  display: grid;
  gap: 14px;
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.about-points div {
  display: flex;
  align-items: baseline;
  gap: 18px;
}

.about-points strong {
  flex-shrink: 0;
  width: 44px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--deco);
  letter-spacing: 0.08em;
}

.about-points span {
  font-size: 13.5px;
  color: #37495C;
}

.company-card {
  padding: 30px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #FFFFFF 0%, #F6FAF9 100%);
  border: 1px solid rgba(23, 38, 56, 0.08);
  box-shadow: 0 34px 70px -46px rgba(11, 27, 48, 0.5);
}

.company-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.company-card-head strong {
  display: block;
  font-size: 18px;
  font-weight: 650;
  color: var(--navy);
  letter-spacing: 0.01em;
}

.company-card-head span {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  color: var(--muted-light);
}

.company-facts {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 6px 0 20px;
}

.company-facts div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(23, 38, 56, 0.09);
}

.company-facts div:last-child {
  border-bottom: 0;
}

.company-facts dt {
  flex-shrink: 0;
  font-size: 12.5px;
  color: var(--muted-light);
}

.company-facts dd {
  font-size: 13px;
  font-weight: 500;
  color: var(--navy);
  text-align: right;
}

.company-facts a {
  color: var(--teal);
}

.company-facts a:hover {
  text-decoration: underline;
}

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

.cta {
  position: relative;
  padding: 88px 0;
  background: linear-gradient(150deg, var(--navy-deep) 0%, var(--navy) 58%, var(--navy-soft) 100%);
  color: #EAF2F3;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  width: 760px;
  height: 760px;
  right: -240px;
  top: -400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 210, 199, 0.24) 0%, rgba(99, 210, 199, 0) 66%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.cta h2 {
  margin-top: 14px;
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.3;
  letter-spacing: -0.012em;
  font-weight: 650;
  color: #FAFDFD;
}

.cta-lede {
  margin-top: 14px;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(234, 242, 243, 0.68);
  max-width: 560px;
}

.cta .btn--ghost {
  color: #EAF2F3;
  border-color: rgba(234, 242, 243, 0.28);
  background: rgba(255, 255, 255, 0.04);
}

.cta .btn--ghost:hover {
  border-color: rgba(99, 210, 199, 0.6);
  background: rgba(255, 255, 255, 0.1);
}

.cta-actions {
  display: flex;
  flex-shrink: 0;
  gap: 14px;
}

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

.site-footer {
  background: var(--navy-deep);
  color: rgba(234, 242, 243, 0.7);
  padding-top: 64px;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.15fr 1.85fr;
  gap: 64px;
  padding-bottom: 52px;
}

.footer-brand p {
  margin-top: 18px;
  font-size: 13.5px;
  line-height: 1.95;
  color: rgba(234, 242, 243, 0.55);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.footer-nav h3 {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #F4F9F9;
}

.footer-nav a,
.footer-plain {
  display: block;
  padding: 5px 0;
  font-size: 13px;
  color: rgba(234, 242, 243, 0.62);
  transition: color 0.18s var(--ease);
}

.footer-nav a:hover {
  color: var(--ai);
}

.footer-legal {
  padding: 22px 28px 30px;
  border-top: 1px solid rgba(234, 242, 243, 0.1);
  font-size: 12.5px;
  line-height: 1.9;
  color: rgba(234, 242, 243, 0.5);
}

.footer-legal p {
  margin: 0;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px 16px;
}

.footer-meta > span {
  white-space: nowrap;
}

.footer-sep {
  color: rgba(234, 242, 243, 0.22);
}

.footer-legal a {
  color: var(--ai);
  text-decoration: none;
}

.footer-legal a:hover {
  text-decoration: underline;
}

.footer-copy {
  margin-top: 6px !important;
  color: rgba(234, 242, 243, 0.38);
}

/* =========================================================
   进场动效
   ========================================================= */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.62s var(--ease), transform 0.62s var(--ease);
}

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

.card-grid .reveal:nth-child(2),
.steps .reveal:nth-child(2) {
  transition-delay: 0.06s;
}

.card-grid .reveal:nth-child(3),
.steps .reveal:nth-child(3) {
  transition-delay: 0.12s;
}

.card-grid .reveal:nth-child(4),
.steps .reveal:nth-child(4) {
  transition-delay: 0.18s;
}

.card-grid .reveal:nth-child(5),
.steps .reveal:nth-child(5) {
  transition-delay: 0.24s;
}

.card-grid .reveal:nth-child(6) {
  transition-delay: 0.3s;
}

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

@media (max-width: 1080px) {
  .hero-inner {
    gap: 44px;
  }

  .hero-copy h1 {
    font-size: clamp(32px, 4.6vw, 46px);
  }

  .site-nav {
    gap: 24px;
  }

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

  .solutions-layout,
  .compliance-layout,
  .about-layout {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .solutions-intro .section-lede {
    max-width: 620px;
  }

  .steps {
    grid-template-columns: repeat(3, 1fr);
    row-gap: 34px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 880px) {
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    z-index: 55;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 8px 28px 22px;
    background: rgba(251, 253, 252, 0.98);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px -30px rgba(11, 27, 48, 0.4);
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.22s var(--ease), transform 0.22s var(--ease);
  }

  .site-nav a {
    padding: 13px 0;
    font-size: 15px;
    color: #33455A;
    border-bottom: 1px solid rgba(23, 38, 56, 0.07);
  }

  .site-nav a::after {
    display: none;
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }

  .site-nav .nav-cta {
    display: flex;
    justify-content: center;
    margin-top: 14px;
    padding: 13px 16px;
    border-bottom: 0;
    border-radius: 11px;
    background: linear-gradient(135deg, var(--teal) 0%, var(--teal-deep) 100%);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
  }

  .site-nav .nav-cta:hover {
    color: #fff;
  }

  .nav-open .site-nav {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-open .nav-toggle span:nth-child(1) {
    transform: translateY(6.8px) rotate(45deg);
  }

  .nav-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  .nav-open .nav-toggle span:nth-child(3) {
    transform: translateY(-6.8px) rotate(-45deg);
  }

  .nav-open .site-header {
    background: rgba(251, 253, 252, 0.98);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom-color: var(--line);
  }

  .nav-open .brand-logo--light {
    display: none;
  }

  .nav-open .brand-logo--dark {
    display: block;
  }

  .nav-open .nav-toggle {
    border-color: var(--line-strong);
  }

  .nav-open .nav-toggle span {
    background: var(--navy);
  }

  .hero {
    padding-top: calc(var(--header-h) + 66px);
    padding-bottom: 84px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .hero-visual {
    max-width: 560px;
  }

  .hero-lede {
    max-width: 620px;
  }

  .strip-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 28px;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 32px;
  }

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

@media (max-width: 640px) {
  .container {
    padding: 0 20px;
  }

  .section {
    padding: 76px 0;
  }

  .header-inner {
    gap: 14px;
  }

  .brand-logo {
    height: 23px;
  }

  .header-actions .btn {
    display: none;
  }

  .hero {
    padding-top: calc(var(--header-h) + 48px);
    padding-bottom: 68px;
  }

  .hero-copy h1 {
    font-size: clamp(30px, 8.6vw, 40px);
    line-height: 1.26;
  }

  .hero-lede {
    font-size: 15px;
  }

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

  .hero-actions .btn {
    width: 100%;
  }

  .hero-points {
    gap: 8px 18px;
    margin-top: 26px;
    padding-top: 22px;
  }

  .float-card {
    display: none;
  }

  .dash-kpis {
    grid-template-columns: 1fr 1fr;
  }

  .dash-kpi:first-child {
    grid-column: 1 / -1;
  }

  .dash-panel {
    padding: 12px 13px 14px;
  }

  .dash-bars {
    height: 72px;
    gap: 8px;
  }

  .strip-inner {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 24px 20px;
  }

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

  .steps {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .solutions-layout,
  .compliance-layout,
  .about-layout {
    gap: 40px;
  }

  .solution-item {
    gap: 16px;
    padding: 22px 0;
  }

  .company-card {
    padding: 24px 20px;
  }

  .company-facts div {
    flex-direction: column;
    gap: 4px;
  }

  .company-facts dd {
    text-align: left;
  }

  .cta {
    padding: 68px 0;
  }

  .cta h2 {
    font-size: 26px;
  }

  .footer-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .footer-sep {
    display: none;
  }

  .cta-actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .site-footer {
    padding-top: 48px;
  }

  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .footer-legal {
    padding: 20px 20px 28px;
  }

  .footer-legal p {
    margin-bottom: 4px;
  }
}

/* =========================================================
   减少动效
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}