/* MERSIGHT 转化站 — 视觉重构
   参考：Stripe / Linear / 飞书云文档 的留白、层次与中文 B2B 阅读节奏
   方向：深港湾蓝 + 琥珀点缀，避免紫系 / 奶油衬线 / 报纸风 */

:root {
  --ink: #0a1524;
  --text: #1c2a3a;
  --sub: #5a6b7d;
  --muted: #8a97a8;
  --line: #d5dde8;
  --line-soft: #e8eef5;
  --bg: #f6f8fb;
  --bg-soft: #eef2f7;
  --bg-mute: #f3f6fa;
  --surface: #ffffff;
  --brand: #1463e0;
  --brand-hover: #0f52bd;
  --brand-soft: #e8f1fd;
  --brand-deep: #0a1524;
  --navy: #0c1c33;
  --accent: #c47b1a;
  --accent-soft: #fff4e5;
  --shell: 1180px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --shadow: 0 1px 2px rgba(10, 21, 36, .04), 0 12px 32px rgba(10, 21, 36, .06);
  --shadow-lg: 0 8px 16px rgba(10, 21, 36, .05), 0 28px 64px rgba(10, 21, 36, .1);
  --font: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-ui: "Plus Jakarta Sans", var(--font);
  --ease: cubic-bezier(.22, 1, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.modal-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }

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

/* —— 进度条 —— */
.page-progress {
  position: fixed; top: 0; left: 0; z-index: 200;
  width: 100%; height: 2px;
}
.page-progress span {
  display: block; width: 0; height: 100%;
  background: linear-gradient(90deg, var(--brand), #3d8bfd);
}

/* —— 导航 —— */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 100;
  height: 68px;
  background: rgba(246, 248, 251, .78);
  border-bottom: 1px solid transparent;
  backdrop-filter: saturate(160%) blur(16px);
  transition: background .25s, border-color .25s, box-shadow .25s;
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, .9);
  border-bottom-color: var(--line-soft);
  box-shadow: 0 8px 24px rgba(10, 21, 36, .04);
}
.nav-wrap {
  display: flex;
  align-items: center;
  height: 68px;
  gap: 28px;
}
.brand img { height: 38px; width: auto; }
.nav-links {
  display: flex;
  flex: 1;
  align-items: center;
  gap: 4px 26px;
  font-size: 14px;
  font-weight: 500;
  color: var(--sub);
}
.nav-links a {
  position: relative;
  padding: 8px 0;
  transition: color .2s;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s var(--ease);
}
.nav-links a:hover::after { transform: scaleX(1); }
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-toggle, .nav-mobile-cta { display: none; }
.nav-toggle {
  width: 42px; height: 42px;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 16px; height: 1.5px;
  background: var(--ink);
  border-radius: 1px;
}

/* —— 按钮 —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
  transition: background .2s, border-color .2s, color .2s, transform .2s, box-shadow .2s;
}
.btn:active { transform: translateY(1px); }
.btn-lg {
  min-height: 48px;
  padding: 0 26px;
  font-size: 15px;
  border-radius: 14px;
}
.btn-block { width: 100%; min-height: 48px; border-radius: 12px; }
.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255,255,255,.18) inset, 0 8px 20px rgba(20, 99, 224, .28);
}
.btn-primary:hover {
  background: var(--brand-hover);
  box-shadow: 0 1px 0 rgba(255,255,255,.18) inset, 0 10px 28px rgba(20, 99, 224, .34);
}
.btn-secondary {
  background: rgba(255, 255, 255, .72);
  border-color: var(--line);
  color: var(--ink);
  backdrop-filter: blur(8px);
}
.btn-secondary:hover {
  border-color: #b8c7db;
  background: #fff;
  color: var(--brand);
}
.btn-text {
  background: transparent;
  color: var(--sub);
  padding: 0 10px;
  box-shadow: none;
}
.btn-text:hover { color: var(--ink); }
.btn-light {
  background: #fff;
  color: var(--navy);
  border-radius: 12px;
}
.btn-light:hover { background: #f0f5ff; }
.text-link {
  display: inline-flex;
  align-items: center;
  margin-top: 20px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--brand);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-ui);
}
.text-link:hover { color: var(--brand-hover); }

/* —— 通用标题 —— */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding: 5px 12px;
  border: 1px solid rgba(20, 99, 224, .16);
  border-radius: 999px;
  background: rgba(232, 241, 253, .7);
  color: var(--brand);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  line-height: 1.4;
}
.eyebrow-light {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .14);
  color: #9ec0ff;
}

.section { padding: 108px 0; }
.section-muted {
  background:
    linear-gradient(180deg, rgba(255,255,255,.5), rgba(255,255,255,0)),
    var(--bg-mute);
}
.section-header {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  gap: 40px;
  align-items: end;
  margin-bottom: 52px;
}
.section-title h2,
.section-header h2,
.enterprise-copy h2,
.cta-inner h2,
.trust-intro h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(28px, 3.2vw, 36px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -.02em;
}
.section-desc {
  margin: 0;
  color: var(--sub);
  font-size: 15px;
  line-height: 1.8;
}
.section-footnote {
  margin: 36px 0 0;
  max-width: 720px;
  padding: 20px 24px;
  border-left: 3px solid var(--brand);
  background: var(--brand-soft);
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.7;
}

/* —— 首屏 —— */
.hero {
  position: relative;
  padding: 128px 0 64px;
  overflow: hidden;
  background: #f4f7fb;
}
.hero-atmosphere {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 480px at 12% -10%, rgba(20, 99, 224, .16), transparent 60%),
    radial-gradient(720px 420px at 88% 8%, rgba(196, 123, 26, .1), transparent 55%),
    radial-gradient(600px 360px at 50% 100%, rgba(15, 138, 122, .06), transparent 50%),
    linear-gradient(180deg, #eef3f9 0%, #f6f8fb 48%, #ffffff 100%);
}
.hero-atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .35;
  background-image:
    linear-gradient(rgba(10, 21, 36, .03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 21, 36, .03) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
}
.hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  gap: 56px;
  align-items: center;
}
.hero-copy { max-width: 540px; }
.hero h1 {
  margin: 0 0 18px;
  color: var(--ink);
  font-size: clamp(34px, 4.2vw, 46px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -.03em;
}
.hero-desc {
  margin: 0;
  color: var(--sub);
  font-size: 17px;
  line-height: 1.75;
  max-width: 34em;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}
.hero-media { position: relative; z-index: 1; }
.hero-media-glow {
  position: absolute;
  inset: 12% -8% -8% 8%;
  border-radius: 40%;
  background: radial-gradient(circle, rgba(20, 99, 224, .22), transparent 68%);
  filter: blur(18px);
  pointer-events: none;
}
.hero-media-frame {
  position: relative;
  border: 1px solid rgba(255, 255, 255, .7);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-lg);
  transform: perspective(1400px) rotateY(-4deg) rotateX(2deg);
  transition: transform .5s var(--ease);
}
.hero-media:hover .hero-media-frame {
  transform: perspective(1400px) rotateY(-1deg) rotateX(0deg);
}
.hero-media-frame img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top left;
}

/* —— 首屏系统核心条 —— */
.core-system {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0 32px;
  margin-top: 48px;
  padding: 22px 28px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(14px);
  box-shadow: 0 12px 40px rgba(10, 21, 36, .06);
}
.core-system-label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 132px;
  padding-right: 28px;
  border-right: 1px solid var(--line-soft);
}
.core-system-label span {
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.core-system-label strong {
  color: var(--ink);
  font-size: 14px;
  font-weight: 650;
  line-height: 1.35;
}
.core-system-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: core-step;
}
.core-system-flow li {
  counter-increment: core-step;
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  margin: 0;
  padding: 6px 0;
  color: var(--ink);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.35;
  white-space: nowrap;
  background: none;
  border: 0;
  box-shadow: none;
}
.core-system-flow li::before {
  content: counter(core-step, decimal-leading-zero);
  color: var(--brand);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .02em;
  opacity: .85;
}
.core-system-flow li:not(:last-child) {
  margin-right: 0;
  padding-right: 22px;
}
.core-system-flow li:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 50%;
  width: 6px;
  height: 6px;
  margin-top: -3px;
  border-right: 1.5px solid var(--muted);
  border-top: 1.5px solid var(--muted);
  border-radius: 0;
  background: none;
  box-shadow: none;
  color: transparent;
  font-size: 0;
  line-height: 0;
  transform: rotate(45deg);
  opacity: .55;
}
.core-system-link {
  display: inline-flex;
  align-items: center;
  min-height: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  color: var(--brand);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  transition: color .2s, opacity .2s;
}
.core-system-link:hover {
  background: none;
  border-color: transparent;
  color: var(--brand-hover);
  opacity: .9;
}

/* —— 适用条 —— */
.fit-band {
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: #fff;
}
.fit-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  min-height: 76px;
  padding: 18px 0;
}
.fit-inner > p {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
  max-width: 42em;
}
.fit-inner ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
}
.fit-inner li {
  display: flex;
  align-items: center;
  gap: 8px;
}
.fit-inner li::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}

/* —— 信任 / 适用验证 —— */
.trust-band {
  padding: 64px 0;
  background:
    linear-gradient(135deg, rgba(20, 99, 224, .04), transparent 40%),
    #fff;
  border-bottom: 1px solid var(--line-soft);
}
.trust-inner {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  gap: 40px;
  align-items: start;
}
.trust-intro h2 { margin: 10px 0 12px; }
.trust-intro p {
  margin: 0;
  color: var(--sub);
  font-size: 15px;
  line-height: 1.8;
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.trust-grid article {
  padding: 22px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #fff, #fafbfd);
  transition: border-color .2s, transform .25s var(--ease), box-shadow .25s;
}
.trust-grid article:hover {
  border-color: #c9d8ef;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.trust-grid h3 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}
.trust-grid p {
  margin: 0;
  color: var(--sub);
  font-size: 13px;
  line-height: 1.7;
}

/* —— 兼容旧类 —— */
.feature-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-item {
  padding: 28px 24px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: #fff;
}
.feature-num {
  display: block;
  margin-bottom: 20px;
  color: var(--brand);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
}
.feature-item h3 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 600;
}
.feature-item p {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
  line-height: 1.7;
}

/* —— 痛点 —— */
.pain-stack {
  display: grid;
  gap: 14px;
}
.pain-stack article {
  position: relative;
  padding: 28px 30px 28px 32px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: 0 1px 0 rgba(10, 21, 36, .02);
  overflow: hidden;
}
.pain-stack article::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--brand), #7eb0ff);
}
.pain-now {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
}
.pain-stack h3 {
  margin: 0 0 10px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}
.pain-stack p {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
  line-height: 1.75;
}
.pain-cost {
  margin-top: 14px !important;
  padding-top: 14px;
  border-top: 1px dashed var(--line-soft);
  color: var(--text) !important;
  font-weight: 500;
}
.pain-bridge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 28px;
  padding: 22px 26px;
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, var(--brand-soft), #fff 55%);
  border: 1px solid rgba(20, 99, 224, .12);
}
.pain-bridge p {
  margin: 0;
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
}
.pain-bridge .text-link { margin-top: 0; }

/* —— 能力 —— */
.edge-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 28px;
}
.edge-grid-3 { grid-template-columns: repeat(3, 1fr); }
.edge-grid article {
  padding: 28px 26px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: #fff;
  transition: border-color .2s, box-shadow .25s, transform .25s var(--ease);
}
.edge-grid article:hover {
  border-color: #c5d6ef;
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.edge-num {
  display: block;
  margin-bottom: 16px;
  color: var(--brand);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
}
.edge-grid h3 {
  margin: 0 0 10px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}
.edge-grid p {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
  line-height: 1.75;
}
.compare-board {
  padding: 28px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xl);
  background: #fff;
  box-shadow: var(--shadow);
}
.compare-board-title {
  margin: 0 0 20px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
}
.compare-table {
  display: grid;
  gap: 0;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  overflow: hidden;
}
.compare-table .compare-row {
  display: grid;
  grid-template-columns: .55fr .85fr 1fr 1.05fr;
  gap: 0;
  border-bottom: 1px solid var(--line-soft);
}
.compare-table .compare-row:last-child { border-bottom: 0; }
.compare-table .compare-row > div {
  padding: 14px 16px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--sub);
  border-right: 1px solid var(--line-soft);
}
.compare-table .compare-row > div:last-child {
  border-right: 0;
  color: var(--ink);
  font-weight: 500;
  background: linear-gradient(180deg, #f3f8ff, #eef5ff);
}
.compare-table .compare-head > div {
  background: var(--bg-soft);
  color: var(--ink);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: .02em;
}
.compare-table .compare-row > div:first-child {
  color: var(--ink);
  font-weight: 600;
}
.compare-caveat {
  margin: 18px 0 0;
  color: var(--sub);
  font-size: 13px;
  line-height: 1.7;
}
.compare-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.compare-row article {
  padding: 24px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: #fff;
}
.compare-row .tag {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
}
.compare-row h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}
.compare-row p {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
  line-height: 1.7;
}

/* —— 作业主线 —— */
.pipeline-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}
.pipeline-track li {
  position: relative;
  padding: 26px 22px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255,255,255,.95), rgba(248,250,253,.95));
  min-height: 198px;
  transition: border-color .2s, box-shadow .25s, transform .25s var(--ease);
}
.pipeline-track li:hover {
  border-color: #c5d6ef;
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.pipeline-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  margin-bottom: 16px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--brand-deep);
  color: #fff;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
}
.pipeline-track h3 {
  margin: 0 0 10px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}
.pipeline-track p {
  margin: 0;
  color: var(--sub);
  font-size: 13px;
  line-height: 1.7;
}
.pipeline-flag {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-style: normal;
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-ui);
}
.pipeline-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 28px;
  padding: 22px 26px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: #fff;
}
.pipeline-note p {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
  line-height: 1.75;
  max-width: 52em;
}

/* —— 产品 Tabs —— */
.product-panel {
  display: grid;
  grid-template-columns: 260px 1fr;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-lg);
}
.product-side {
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #0c1c33, #132844);
  border-right: 1px solid rgba(255,255,255,.06);
}
.product-side button {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  width: 100%;
  padding: 18px 18px;
  border: 0;
  border-bottom: 1px solid rgba(255,255,255,.06);
  background: transparent;
  color: rgba(255,255,255,.62);
  text-align: left;
  transition: background .2s, color .2s;
}
.product-side button b {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  color: rgba(255,255,255,.35);
}
.product-side button span {
  display: grid;
  gap: 2px;
  font-size: 14px;
  font-weight: 600;
  color: inherit;
}
.product-side button small {
  font-size: 12px;
  font-weight: 400;
  color: rgba(255,255,255,.4);
}
.product-side button:hover {
  background: rgba(255,255,255,.04);
  color: #fff;
}
.product-side button.is-active {
  background: rgba(20, 99, 224, .22);
  color: #fff;
  box-shadow: inset 3px 0 0 #5b9bff;
}
.product-side button.is-active b { color: #9ec0ff; }
.product-side button.is-active small { color: rgba(255,255,255,.55); }
.product-main {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 28px;
  padding: 36px 32px;
  align-items: center;
}
.product-text .eyebrow { margin-bottom: 12px; }
.product-text h3 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -.02em;
}
.product-text p {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
  line-height: 1.75;
}
.product-text ul {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.product-text li {
  position: relative;
  padding-left: 18px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}
.product-text li::before {
  content: "";
  position: absolute;
  left: 0; top: .55em;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}
.product-shot {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-soft);
}
.product-shot img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  object-position: top left;
  transition: opacity .2s, transform .45s var(--ease);
}
.product-shot img.is-switching {
  opacity: .35;
  transform: scale(.985);
}
.zoom-btn {
  position: absolute;
  right: 12px; bottom: 12px;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(255,255,255,.5);
  border-radius: 999px;
  background: rgba(10, 21, 36, .72);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(8px);
}
.zoom-btn:hover { background: rgba(10, 21, 36, .88); }

/* —— 角色 —— */
.buyer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.buyer-grid article {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--line-soft);
  transition: border-color .2s, box-shadow .25s;
}
.buyer-grid article:hover {
  border-color: #c9d8ef;
  box-shadow: var(--shadow);
}
.buyer-grid h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}
.buyer-grid .q {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 14px;
  font-weight: 600;
}
.buyer-grid p:last-child {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
  line-height: 1.75;
}

/* —— 企业核对条 —— */
.gov-strip {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) auto auto;
  gap: 24px 32px;
  align-items: center;
  margin-top: 28px;
  padding: 26px 28px;
  border: 1px solid rgba(20, 99, 224, .14);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(120deg, rgba(20, 99, 224, .06), transparent 45%),
    #fff;
}
.gov-strip h3 {
  margin: 8px 0 8px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
}
.gov-strip > div > p {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
  line-height: 1.65;
}
.gov-strip ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
}
.gov-strip li::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--brand);
  vertical-align: .15em;
}

/* —— 企业能力（兼容） —— */
.section-dark {
  background: var(--navy);
  color: #fff;
}
.enterprise-layout {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  gap: 48px;
  align-items: start;
}
.enterprise-copy > p {
  margin: 14px 0 24px;
  color: rgba(255,255,255,.68);
  font-size: 15px;
  line-height: 1.75;
}
.enterprise-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.enterprise-list li {
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}
.enterprise-list li:first-child { border-top: 1px solid rgba(255, 255, 255, .12); }
.enterprise-list h3 {
  margin: 0 0 6px;
  font-size: 16px;
  color: #fff;
}
.enterprise-list p {
  margin: 0;
  color: rgba(255,255,255,.62);
  font-size: 14px;
}

/* —— 试点 —— */
.pilot-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}
.pilot-metrics > div {
  padding: 22px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: #fff;
}
.pilot-metrics em {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-style: normal;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-ui);
  letter-spacing: .04em;
}
.pilot-metrics strong {
  display: block;
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}
.pilot-body {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: 20px;
  align-items: stretch;
}
.pilot-steps {
  margin: 0;
  padding: 8px 0;
  list-style: none;
  display: grid;
  gap: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xl);
  background: #fff;
  overflow: hidden;
}
.pilot-steps li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 8px;
  padding: 24px 24px;
  border-bottom: 1px solid var(--line-soft);
}
.pilot-steps li:last-child { border-bottom: 0; }
.pilot-steps span {
  color: var(--brand);
  font-family: var(--font-ui);
  font-size: 18px;
  font-weight: 700;
}
.pilot-steps h3 {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
}
.pilot-steps p {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
  line-height: 1.7;
}
.pilot-card {
  padding: 28px;
  border-radius: var(--radius-xl);
  background: linear-gradient(165deg, #0c1c33 0%, #143352 100%);
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.pilot-card .eyebrow { margin-bottom: 12px; }
.pilot-card h3 {
  margin: 0 0 18px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  color: #fff;
}
.pilot-card ul {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.pilot-card li {
  position: relative;
  padding-left: 16px;
  color: rgba(255,255,255,.78);
  font-size: 13px;
  line-height: 1.6;
}
.pilot-card li::before {
  content: "";
  position: absolute;
  left: 0; top: .55em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #5b9bff;
}
.pilot-note {
  margin: 14px 0 0;
  text-align: center;
  color: rgba(255,255,255,.55);
  font-size: 13px;
}
.pilot-note .text-link {
  margin-top: 0;
  color: #9ec0ff;
  display: inline;
}
.pilot-note .text-link:hover { color: #fff; }

/* —— FAQ —— */
.faq-layout {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  gap: 48px;
  align-items: start;
}
.faq-layout .section-title .text-link { margin-top: 16px; }
.faq-list {
  display: grid;
  gap: 10px;
}
.faq-list details {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: #fff;
  overflow: hidden;
  transition: border-color .2s, box-shadow .2s;
}
.faq-list details[open] {
  border-color: #c5d6ef;
  box-shadow: var(--shadow);
}
.faq-list summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 52px 18px 20px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 650;
  position: relative;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 20px; top: 50%;
  transform: translateY(-50%);
  color: var(--brand);
  font-family: var(--font-ui);
  font-size: 20px;
  font-weight: 500;
}
.faq-list details[open] summary::after { content: "–"; }
.faq-list details p {
  margin: 0;
  padding: 0 20px 18px;
  color: var(--sub);
  font-size: 14px;
  line-height: 1.75;
}

/* —— 底部 CTA —— */
.cta-banner {
  position: relative;
  padding: 88px 0;
  overflow: hidden;
  background: var(--navy);
  border-top: 0;
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(700px 320px at 15% 20%, rgba(20, 99, 224, .35), transparent 60%),
    radial-gradient(560px 280px at 90% 80%, rgba(196, 123, 26, .18), transparent 55%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.cta-inner h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 3vw, 34px);
  color: #fff;
}
.cta-inner p {
  margin: 0;
  color: rgba(255,255,255,.68);
  font-size: 15px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  flex: none;
}
.cta-banner .btn-secondary {
  background: transparent;
  border-color: rgba(255,255,255,.28);
  color: #fff;
}
.cta-banner .btn-secondary:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.5);
  color: #fff;
}

/* —— 页脚 —— */
.site-footer {
  padding: 32px 0;
  background: #070f1a;
  color: rgba(255, 255, 255, .5);
  font-size: 12px;
}
.footer-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-brand img {
  height: 32px;
  width: auto;
  padding: 6px 8px;
  background: #fff;
  border-radius: 6px;
}
.footer-nav {
  display: flex;
  gap: 20px;
}
.footer-nav a:hover { color: #fff; }
.footer-mail {
  margin-left: auto;
  color: rgba(255, 255, 255, .78);
  font-family: var(--font-ui);
}
.footer-mail:hover { color: #fff; }

/* —— 弹窗 —— */
.lead-modal, .image-modal {
  width: min(900px, calc(100% - 32px));
  max-height: calc(100vh - 32px);
  padding: 0;
  border: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 28px 80px rgba(7, 15, 26, .4);
}
.lead-modal[open] {
  display: grid;
  grid-template-columns: .72fr 1.28fr;
}
.lead-modal::backdrop, .image-modal::backdrop {
  background: rgba(7, 15, 26, .58);
  backdrop-filter: blur(6px);
}
.modal-close {
  position: absolute;
  z-index: 3;
  top: 14px; right: 14px;
  width: 36px; height: 36px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--sub);
  font-size: 22px;
  line-height: 1;
}
.modal-intro {
  padding: 44px 30px;
  background:
    radial-gradient(420px 220px at 20% 0%, rgba(20, 99, 224, .35), transparent 60%),
    var(--navy);
  color: #fff;
}
.modal-intro h2 {
  margin: 10px 0 12px;
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -.02em;
}
.modal-intro > p {
  margin: 0;
  color: rgba(255, 255, 255, .65);
  font-size: 14px;
  line-height: 1.7;
}
.modal-intro ul {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  color: rgba(255, 255, 255, .72);
  font-size: 13px;
}
.modal-intro li {
  position: relative;
  padding-left: 14px;
}
.modal-intro li::before {
  content: "";
  position: absolute;
  left: 0; top: .55em;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
}
.lead-form {
  display: grid;
  gap: 14px;
  padding: 36px 30px 24px;
  overflow: auto;
  background: #fff;
}
.lead-form label {
  display: grid;
  gap: 6px;
  color: var(--sub);
  font-size: 13px;
  font-weight: 500;
}
.lead-form input,
.lead-form textarea,
.lead-form select {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: none;
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.lead-form input:focus,
.lead-form textarea:focus,
.lead-form select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(20, 99, 224, .12);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.form-note {
  margin: 0;
  color: var(--muted);
  text-align: center;
  font-size: 12px;
}
.form-success {
  align-self: center;
  padding: 48px 32px;
  text-align: center;
  background: #fff;
}
.form-success h3 {
  margin: 0 0 8px;
  font-size: 20px;
  color: var(--ink);
}
.form-success p {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
}
.image-modal {
  width: min(1280px, calc(100% - 32px));
  background: var(--bg-soft);
}
.image-modal img { width: 100%; }

/* —— 动效 —— */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-media-frame,
  .hero-media:hover .hero-media-frame { transform: none; }
  .btn:active { transform: none; }
}

/* —— 响应式 —— */
@media (max-width: 1100px) {
  .hero h1 { font-size: 34px; }
  .section-title h2,
  .section-header h2,
  .enterprise-copy h2 { font-size: 28px; }
  .value-grid { grid-template-columns: 1fr 1fr; }
  .pipeline-track { grid-template-columns: 1fr 1fr; }
  .product-main { grid-template-columns: 1fr; }
  .pilot-metrics { grid-template-columns: 1fr 1fr; }
  .trust-inner { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr 1fr; }
  .gov-strip { grid-template-columns: 1fr; }
  .hero-media-frame { transform: none; }
}

@media (max-width: 900px) {
  .shell { width: min(calc(100% - 32px), var(--shell)); }
  .nav-links {
    position: fixed;
    top: 68px; left: 12px; right: 12px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    box-shadow: var(--shadow-lg);
  }
  .nav-links.is-open { display: flex; }
  .nav-links a {
    padding: 12px 14px;
    border-bottom: 1px solid var(--line-soft);
  }
  .nav-links a::after { display: none; }
  .nav-mobile-cta {
    display: block;
    margin-top: 8px;
    min-height: 42px;
    border: 0;
    border-radius: 12px;
    background: var(--brand);
    color: #fff;
    font-weight: 600;
  }
  .nav-actions { display: none; }
  .nav-toggle { display: flex; }

  .hero { padding: 100px 0 40px; }
  .core-system {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 28px;
    padding: 18px 20px;
  }
  .core-system-label {
    min-width: 0;
    padding: 0 0 12px;
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }
  .core-system-flow {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 2px 0 8px;
    gap: 0;
  }
  .core-system-flow li {
    font-size: 12px;
    padding: 6px 0;
  }
  .core-system-flow li:not(:last-child) {
    padding-right: 20px;
  }
  .core-system-link {
    justify-content: flex-start;
    width: auto;
  }
  .trust-inner,
  .gov-strip {
    grid-template-columns: 1fr;
  }
  .trust-grid { grid-template-columns: 1fr; }
  .gov-strip .btn { width: 100%; }
  .hero-layout,
  .section-header,
  .enterprise-layout,
  .pilot-body,
  .faq-layout,
  .cta-inner,
  .fit-inner {
    grid-template-columns: 1fr;
    display: grid;
    gap: 28px;
  }
  .fit-inner { gap: 16px; }
  .hero-copy { max-width: none; }
  .feature-row,
  .step-row,
  .compare-row,
  .pipeline-track { grid-template-columns: 1fr; }
  .pipeline-note {
    flex-direction: column;
    align-items: flex-start;
  }
  .pipeline-note .btn { width: 100%; }
  .product-panel { grid-template-columns: 1fr; }
  .product-side {
    flex-direction: row;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid rgba(255,255,255,.08);
    scrollbar-width: none;
  }
  .product-side::-webkit-scrollbar { display: none; }
  .product-side button {
    flex: none;
    min-width: 148px;
    border-bottom: 0;
    border-right: 1px solid rgba(255,255,255,.08);
  }
  .product-side button.is-active {
    box-shadow: inset 0 -3px 0 #5b9bff;
  }
  .buyer-grid { grid-template-columns: 1fr; }
  .edge-grid,
  .edge-grid-3 { grid-template-columns: 1fr; }
  .pain-bridge {
    flex-direction: column;
    align-items: flex-start;
  }
  .compare-table .compare-row {
    grid-template-columns: 1fr;
  }
  .compare-table .compare-row > div {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }
  .compare-table .compare-row > div:last-child { border-bottom: 0; }
  .compare-table .compare-head { display: none; }
  .footer-mail { margin-left: 0; }
}

@media (max-width: 580px) {
  .section { padding: 72px 0; }
  .hero h1 { font-size: 30px; }
  .section-title h2,
  .section-header h2,
  .enterprise-copy h2,
  .cta-inner h2 { font-size: 24px; }
  .hero-cta, .cta-actions {
    flex-direction: column;
  }
  .hero-cta .btn, .cta-actions .btn { width: 100%; }
  .value-grid,
  .pilot-metrics,
  .pipeline-track { grid-template-columns: 1fr; }
  .product-main { padding: 24px 20px; }
  .lead-modal[open] { display: block; overflow: auto; }
  .modal-intro, .lead-form { padding: 28px 20px; }
  .form-row { grid-template-columns: 1fr; }
  .btn { border-radius: 12px; }
  .btn-lg { border-radius: 12px; }
}

/* —— 法律文档页 —— */
.legal-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: #1c3864;
  background: linear-gradient(180deg, #f4f9ff 0%, #f7fafc 40%, #fff 100%);
}
.legal-top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px max(20px, calc((100vw - 820px) / 2 + 20px));
  border-bottom: 1px solid #d7e3f2;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
}
.legal-brand img {
  display: block;
  height: 28px;
  width: auto;
  padding: 4px 6px;
  background: #fff;
  border-radius: 6px;
}
.legal-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 14px;
}
.legal-switch a { color: #3d5f8f; }
.legal-switch a:hover,
.legal-switch a[aria-current="page"] { color: #0b63ce; }
.legal-main {
  width: min(820px, calc(100% - 40px));
  margin: 0 auto;
  padding: 36px 0 64px;
  flex: 1;
}
.legal-meta {
  margin: 0 0 8px;
  color: #6b829f;
  font-size: 13px;
}
.legal-main > h1 {
  margin: 0 0 16px;
  font-size: clamp(28px, 4vw, 36px);
  line-height: 1.25;
}
.legal-summary {
  margin: 0 0 28px;
  color: #3d5f8f;
  font-size: 15px;
  line-height: 1.7;
}
.legal-toc {
  display: grid;
  gap: 8px;
  margin-bottom: 36px;
  padding: 16px 18px;
  border: 1px solid #d7e3f2;
  border-radius: 12px;
  background: #fff;
}
.legal-toc a {
  color: #2557a0;
  font-size: 13px;
  line-height: 1.45;
}
.legal-toc a:hover { text-decoration: underline; }
.legal-article section {
  margin-bottom: 28px;
  scroll-margin-top: 72px;
}
.legal-article h2 {
  margin: 0 0 12px;
  font-size: 18px;
  line-height: 1.4;
}
.legal-article p,
.legal-article li {
  margin: 0 0 10px;
  color: #294866;
  font-size: 14px;
  line-height: 1.75;
}
.legal-article ul {
  margin: 0 0 12px;
  padding-left: 1.2em;
}
.legal-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 18px max(20px, calc((100vw - 820px) / 2 + 20px));
  border-top: 1px solid #d7e3f2;
  color: #6b829f;
  font-size: 12px;
  background: #fff;
}
.legal-footer a { color: #3d5f8f; }
.legal-footer a:hover { color: #0b63ce; }
@media (max-width: 640px) {
  .legal-top {
    align-items: flex-start;
    flex-direction: column;
  }
}