:root {
  --blue: #0052d9;
  --blue-2: #1268f3;
  --blue-light: #e8f2ff;
  --deep: #061b42;
  --ink: #071b43;
  --text: #344764;
  --muted: #72839d;
  --line: #dce8f8;
  --soft: #f4f8ff;
  --red: #d54941;
  --green: #22b986;
  --shadow: 0 14px 34px rgba(30, 88, 178, .10);
}
* { box-sizing: border-box; }
body {
  min-width: 1200px;
  margin: 0;
  color: var(--text);
  background: #fff;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}
a { color: inherit; text-decoration: none; }
.shell { width: 1120px; margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: 66px;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid #dde8f8;
  box-shadow: 0 8px 24px rgba(23,77,156,.05);
}
.nav { display: flex; align-items: center; height: 66px; gap: 30px; }
.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  width: 265px;
  color: #172f55;
  font-size: 16px;
  font-weight: 900;
}
.brand img:first-child { width: 42px; height: 42px; }
.brand img:nth-child(2) { width: 118px; }
.brand span { padding-left: 14px; border-left: 1px solid #d6e2f3; }
.nav-links {
  display: flex;
  justify-content: center;
  flex: 1;
  gap: 38px;
  color: #243a5a;
  font-size: 14px;
  font-weight: 750;
}
.nav-links .active { color: var(--blue-2); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 108px;
  height: 38px;
  border: 1px solid #a8c8ff;
  border-radius: 7px;
  color: var(--blue-2);
  background: #fff;
  font-size: 14px;
  font-weight: 900;
  white-space: nowrap;
}
.btn.primary {
  color: #fff;
  border-color: var(--blue-2);
  background: linear-gradient(135deg, #2a86ff, #1268f3);
  box-shadow: 0 12px 24px rgba(18,104,243,.22);
}

.hero {
  min-height: 500px;
  background:
    radial-gradient(circle at 78% 42%, rgba(0,82,217,.10), transparent 30%),
    linear-gradient(115deg, #f8fbff 0%, #edf5ff 58%, #e8f2ff 100%);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 460px 1fr;
  align-items: center;
  min-height: 500px;
  gap: 36px;
  padding: 40px 0;
}
.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}
.breadcrumb strong { color: var(--blue); font-weight: 900; }
.hero h1 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: clamp(30px, 3.05vw, 40px);
  line-height: 1.15;
  font-weight: 900;
}
.hero h1.blue { color: var(--blue); }
.hero .subhead {
  margin: 0 0 14px;
  color: #0b2d5d;
  font-size: 24px;
  font-weight: 800;
}
.hero .sub {
  margin: 0 0 28px;
  color: #536983;
  font-size: 15px;
  line-height: 1.85;
  font-weight: 650;
}
.hero-tags {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
}
.hero-tags.cols-3 { grid-template-columns: repeat(3, 1fr); }
.hero-tags li {
  display: grid;
  grid-template-columns: 28px 1fr;
  align-items: center;
  gap: 8px;
  color: #233d61;
  font-size: 14px;
  font-weight: 800;
}
.hero-tags i {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  color: var(--blue);
  background: rgba(0,82,217,.08);
  font-size: 14px;
}
.hero-actions { display: flex; gap: 18px; }
.hero-actions .btn { width: 140px; height: 44px; font-size: 15px; }
.hero-visual { position: relative; min-height: 400px; }

.section { padding: 56px 0; }
.section.soft { background: var(--soft); }
.section-head { margin: 0 0 32px; text-align: center; }
.section-head h2 { margin: 0; color: #0b2d5d; font-size: 26px; font-weight: 900; }
.section-head p { margin: 10px 0 0; color: var(--muted); font-size: 14px; font-weight: 700; }

.why-grid { display: grid; gap: 16px; }
.why-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.why-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }
.why-card {
  padding: 24px 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 10px 24px rgba(33,86,170,.06);
  text-align: center;
}
.why-card .icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  border-radius: 12px;
  color: var(--blue);
  background: rgba(0,82,217,.08);
  font-size: 22px;
}
.why-card h3 { margin: 0 0 8px; color: #0d2c5b; font-size: 15px; font-weight: 900; }
.why-card p { margin: 0; color: #52677f; font-size: 13px; line-height: 1.7; font-weight: 650; }

.cap-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.cap-card {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 12px;
  min-height: 90px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 8px 20px rgba(33,86,170,.05);
}
.cap-card .icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  color: var(--blue);
  background: rgba(0,82,217,.08);
  font-size: 18px;
}
.cap-card h3 { margin: 0 0 5px; color: #0d2c5b; font-size: 14px; font-weight: 900; }
.cap-card p { margin: 0; color: #52677f; font-size: 12px; line-height: 1.6; font-weight: 650; }

.flow {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.flow.cols-4 { grid-template-columns: repeat(4, 1fr); }
.flow.cols-5 { grid-template-columns: repeat(5, 1fr); }
.flow.cols-6 { grid-template-columns: repeat(6, 1fr); }
.flow li {
  position: relative;
  text-align: center;
  padding: 20px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 8px 20px rgba(33,86,170,.05);
}
.flow li:not(:last-child)::after {
  content: "\f061";
  position: absolute;
  right: -14px;
  top: 50%;
  color: var(--blue);
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 14px;
  transform: translateY(-50%);
  z-index: 1;
}
.flow .step-icon, .flow .step-num {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin: 0 auto 12px;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, #2a86ff, var(--blue));
  font-size: 20px;
  font-weight: 900;
  box-shadow: 0 8px 20px rgba(0,82,217,.25);
}
.flow h3 { margin: 0 0 6px; color: #0d2c5d; font-size: 13px; font-weight: 900; }
.flow p { margin: 0; color: #52677f; font-size: 11px; line-height: 1.5; font-weight: 650; }

.preview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.preview-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.preview-panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.preview-panel .panel-head {
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #f8fbff, #fff);
}
.preview-panel .panel-head h3 { margin: 0; color: #132f5b; font-size: 14px; font-weight: 900; }
.preview-panel .panel-head span { color: var(--muted); font-size: 11px; font-weight: 700; }
.preview-body { padding: 14px; min-height: 260px; }

.mock-screen {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbff;
  overflow: hidden;
}
.mock-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 36px;
  padding: 0 12px;
  background: linear-gradient(180deg, #fff, #f4f8ff);
  border-bottom: 1px solid var(--line);
  font-size: 11px;
  font-weight: 900;
  color: #132f5b;
}
.mock-top span { color: var(--blue); }

.scene-grid { display: grid; gap: 18px; }
.scene-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.scene-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.scene-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }
.scene-grid.cols-6 { grid-template-columns: repeat(6, 1fr); }
.scene-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 10px 24px rgba(33,86,170,.06);
  text-align: center;
}
.scene-card img {
  display: block;
  width: 100%;
  height: 140px;
  object-fit: cover;
}
.scene-card .icon-box {
  display: grid;
  place-items: center;
  height: 100px;
  color: var(--blue);
  font-size: 36px;
  background: linear-gradient(135deg, #e8f2ff, #d0e4ff);
}
.scene-card div { padding: 16px 18px 20px; }
.scene-card h3 { margin: 0 0 8px; color: #0d2c5b; font-size: 15px; font-weight: 900; }
.scene-card p { margin: 0; color: #52677f; font-size: 12px; line-height: 1.65; }

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 20px;
}
.faq-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 12px 16px;
  list-style: none;
  color: #183b69;
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "\f078";
  color: var(--blue);
  font-family: "Font Awesome 6 Free";
  font-size: 12px;
  font-weight: 900;
  flex-shrink: 0;
  margin-left: 12px;
}
.faq-item[open] summary::after { content: "\f077"; }
.faq-item p {
  margin: 0;
  padding: 0 16px 14px;
  color: #52677f;
  font-size: 13px;
  line-height: 1.7;
  font-weight: 650;
}

.cta {
  padding: 56px 0;
  color: #fff;
  background: linear-gradient(100deg, #0039a6, #0052d9 50%, #1268f3);
}
.cta-inner { text-align: center; }
.cta h2 { margin: 0 0 14px; font-size: 28px; font-weight: 900; }
.cta p {
  max-width: 680px;
  margin: 0 auto 28px;
  color: rgba(255,255,255,.88);
  font-size: 15px;
  line-height: 1.8;
  font-weight: 650;
}
.cta-actions { display: flex; justify-content: center; gap: 20px; }
.cta .btn { width: 148px; height: 46px; font-size: 15px; }
.cta .btn.white { color: var(--blue); background: #fff; border-color: #fff; box-shadow: none; }
.cta .btn.outline { color: #fff; background: transparent; border-color: rgba(255,255,255,.7); box-shadow: none; }

.site-footer { padding: 24px 0; color: #5d6f86; background: #fff; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1.2fr; gap: 26px; font-size: 12px; }
.footer-brand { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.footer-brand img:first-child { width: 28px; }
.footer-brand img:last-child { width: 100px; }
.site-footer h3 { margin: 0 0 8px; color: #243a5a; font-size: 12px; }
.site-footer a, .site-footer span { display: block; margin: 5px 0; }

/* Shared mock UI */
.ui-window {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.ui-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 40px;
  padding: 0 14px;
  background: linear-gradient(180deg, #fff, #f4f8ff);
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  font-weight: 900;
  color: #132f5b;
}
.ui-bar span { color: var(--blue); font-size: 11px; }
.ui-table { width: 100%; border-collapse: collapse; font-size: 11px; }
.ui-table th, .ui-table td {
  height: 30px;
  padding: 0 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
.ui-table th { color: #7890ab; background: #f3f8ff; font-weight: 900; }
.ui-table td a { color: var(--blue); font-weight: 900; }

.highlight-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.highlight-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(33,86,170,.05);
}
.highlight-card .shot {
  height: 120px;
  background: linear-gradient(135deg, #d8e8ff, #b8cce8);
  border-bottom: 1px solid var(--line);
}
.highlight-card div { padding: 14px; }
.highlight-card h3 { margin: 0 0 10px; color: #0d2c5b; font-size: 14px; font-weight: 900; }
.highlight-card ul { margin: 0; padding: 0; list-style: none; }
.highlight-card li {
  display: flex;
  gap: 8px;
  margin-bottom: 6px;
  color: #52677f;
  font-size: 12px;
  font-weight: 650;
}
.highlight-card li i { color: var(--blue); margin-top: 2px; }

.dual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.dual-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow);
}
.dual-card h3 { margin: 0 0 16px; color: #0d2c5b; font-size: 16px; font-weight: 900; }
.point-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.point-list li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  color: #52677f;
  font-size: 13px;
  font-weight: 650;
  line-height: 1.6;
}
.point-list i { color: var(--blue); margin-top: 3px; }

.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 12px; }
.kpi {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbff;
  text-align: center;
}
.kpi span { display: block; color: var(--muted); font-size: 10px; font-weight: 800; }
.kpi b { display: block; margin-top: 4px; color: var(--ink); font-size: 18px; font-weight: 900; }

.engine-flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}
.engine-step {
  text-align: center;
  padding: 16px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}
.engine-step b {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin: 0 auto 10px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 14px;
}
.engine-step h4 { margin: 0 0 6px; font-size: 12px; color: #0d2c5b; }
.engine-step p { margin: 0; font-size: 10px; color: #52677f; line-height: 1.5; }

.dashboard-card {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow);
}
.dash-kpis { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin-bottom: 12px; }
.dash-kpi {
  padding: 10px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbff;
  text-align: center;
}
.dash-kpi span { display: block; color: var(--muted); font-size: 10px; font-weight: 800; }
.dash-kpi b { display: block; margin-top: 4px; color: var(--ink); font-size: 16px; }

/* ===== 设计图规范组件 ===== */
.section { padding: 80px 0; }
.eyebrow-pill {
  display: inline-flex;
  align-items: center;
  height: 30px;
  margin-bottom: 16px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--blue);
  background: rgba(0,82,217,.08);
  font-size: 13px;
  font-weight: 900;
}
.nav-phone {
  margin-right: 8px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
}
.nav-phone i { margin-right: 5px; }

/* 虚线编号流程（设计图 01-06） */
.flow-dashed {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin: 0;
  padding: 0;
  list-style: none;
}
.flow-dashed li {
  position: relative;
  flex: 1;
  text-align: center;
  padding: 0 8px;
}
.flow-dashed li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 22px;
  left: calc(50% + 36px);
  width: calc(100% - 72px);
  border-top: 2px dashed rgba(0,82,217,.35);
}
.flow-dashed .num {
  display: block;
  margin-bottom: 10px;
  color: var(--blue);
  font-size: 28px;
  line-height: 1;
  font-weight: 900;
}
.flow-dashed .ico {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin: 0 auto 10px;
  border-radius: 50%;
  color: var(--blue);
  background: rgba(0,82,217,.08);
  font-size: 18px;
}
.flow-dashed h3 { margin: 0 0 6px; color: #0d2c5b; font-size: 14px; font-weight: 900; }
.flow-dashed p { margin: 0; color: #52677f; font-size: 12px; line-height: 1.55; font-weight: 650; }

/* 价值图标行 */
.value-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.value-strip article { text-align: center; }
.value-strip .circle {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 12px;
  border-radius: 50%;
  color: var(--blue);
  background: rgba(0,82,217,.08);
  font-size: 16px;
}
.value-strip h3 { margin: 0 0 6px; color: #0d2c5b; font-size: 14px; font-weight: 900; }
.value-strip p { margin: 0; color: #52677f; font-size: 12px; line-height: 1.6; font-weight: 650; }

/* 左图标右文案（智能监考 Why） */
.why-grid.cols-2x2 { grid-template-columns: repeat(2, 1fr); }
.why-card.row {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 14px;
  text-align: left;
  padding: 20px;
}
.why-card.row .icon { margin: 0; width: 44px; height: 44px; font-size: 20px; }

/* 横向三图标标签 */
.hero-tags.inline {
  display: flex;
  gap: 28px;
  margin-bottom: 28px;
}
.hero-tags.inline li {
  display: flex;
  align-items: center;
  gap: 8px;
  grid-template-columns: none;
}

/* 场景描边图标 */
.scene-card.outline .icon-box {
  height: 88px;
  font-size: 32px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  color: var(--blue);
}

/* FAQ 单列 + 号 */
.faq-plus {
  max-width: 860px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  overflow: hidden;
}
.faq-plus details { border-bottom: 1px solid var(--line); }
.faq-plus details:last-child { border-bottom: 0; }
.faq-plus summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 52px;
  padding: 14px 20px;
  list-style: none;
  color: #183b69;
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
}
.faq-plus summary::-webkit-details-marker { display: none; }
.faq-plus summary::before {
  content: "\f059";
  margin-right: 12px;
  color: var(--blue);
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 14px;
}
.faq-plus summary::after {
  content: "+";
  color: var(--muted);
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
}
.faq-plus details[open] summary::after { content: "−"; }
.faq-plus p {
  margin: 0;
  padding: 0 20px 16px 46px;
  color: #52677f;
  font-size: 13px;
  line-height: 1.75;
  font-weight: 650;
}

/* FAQ Q/A 格式 */
.faq-qa {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 32px;
}
.faq-qa .qa-item h4 {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 0 0 8px;
  color: #0d2c5b;
  font-size: 14px;
  font-weight: 900;
}
.faq-qa .qa-item h4::before {
  content: "Q";
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 4px;
  color: #fff;
  background: var(--blue);
  font-size: 12px;
}
.faq-qa .qa-item p {
  display: flex;
  gap: 8px;
  margin: 0;
  padding-left: 30px;
  color: #52677f;
  font-size: 13px;
  line-height: 1.7;
  font-weight: 650;
}
.faq-qa .qa-item p::before {
  content: "A";
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  margin-left: -30px;
  border-radius: 4px;
  color: var(--muted);
  background: #eef3fa;
  text-align: center;
  line-height: 22px;
  font-size: 12px;
  font-weight: 900;
}

/* 2x2 界面展示 */
.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.showcase-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.showcase-card .shot {
  height: 200px;
  background: linear-gradient(135deg, #e8f2ff, #c5d9f5);
  border-bottom: 1px solid var(--line);
}
.showcase-card .shot.dark {
  background: linear-gradient(135deg, #0a1e42, #153060);
}
.showcase-card div { padding: 16px 18px 20px; }
.showcase-card h3 { margin: 0 0 6px; color: #0d2c5b; font-size: 15px; font-weight: 900; }
.showcase-card p { margin: 0; color: #52677f; font-size: 13px; line-height: 1.65; font-weight: 650; }

/* CTA 几何纹理 */
.cta.pattern {
  position: relative;
  overflow: hidden;
  background: linear-gradient(100deg, #0039a6, #0052d9 45%, #1268f3);
}
.cta.pattern::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(30deg, rgba(255,255,255,.04) 12%, transparent 12.5%),
    linear-gradient(150deg, rgba(255,255,255,.04) 12%, transparent 12.5%);
  background-size: 48px 48px;
  pointer-events: none;
}
.cta.split .cta-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 32px;
  text-align: left;
}
.cta.split p { margin: 0; max-width: none; }
.cta.split .cta-actions { justify-content: flex-end; }

/* 深色页脚（设计图规范） */
.site-footer.dark {
  padding: 48px 0 0;
  color: rgba(255,255,255,.72);
  background: #0a1628;
  border-top: 0;
}
.site-footer.dark .footer-main {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr) 1.3fr;
  gap: 28px;
  padding-bottom: 36px;
}
.site-footer.dark .footer-brand img:last-child { filter: brightness(0) invert(1); }
.site-footer.dark h3 { color: rgba(255,255,255,.92); font-size: 13px; margin-bottom: 14px; }
.site-footer.dark a, .site-footer.dark span { color: rgba(255,255,255,.62); font-size: 12px; margin: 6px 0; }
.site-footer.dark a:hover { color: #fff; }
.site-footer.dark .footer-desc { margin: 12px 0; font-size: 12px; line-height: 1.7; }
.site-footer.dark .social { display: flex; gap: 10px; margin-top: 14px; }
.site-footer.dark .social a {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.8);
  font-size: 14px;
}
.site-footer.dark .footer-contact b {
  display: block;
  margin-bottom: 8px;
  color: #fff;
  font-size: 26px;
  font-weight: 900;
}
.site-footer.dark .qr-box {
  display: grid;
  place-items: center;
  width: 88px;
  height: 88px;
  margin-top: 12px;
  border-radius: 8px;
  background: #fff;
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
}
.site-footer.dark .copyright {
  padding: 16px 0;
  border-top: 1px solid rgba(255,255,255,.08);
  color: rgba(255,255,255,.4);
  font-size: 11px;
  text-align: center;
}

/* 引擎流程箭头连接 */
.engine-flow.connected .engine-step { position: relative; }
.engine-flow.connected .engine-step:not(:last-child)::after {
  content: "\f061";
  position: absolute;
  right: -12px;
  top: 50%;
  color: var(--blue);
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 12px;
  transform: translateY(-50%);
  z-index: 1;
}

/* 场景浅蓝底卡片 */
.scene-card.tint {
  background: rgba(0,82,217,.04);
  border-color: rgba(0,82,217,.12);
}
.scene-card.tint .icon-box {
  height: 72px;
  font-size: 28px;
  background: transparent;
}

/* 痛点 + 价值分栏 */
.split-value {
  display: grid;
  grid-template-columns: 1fr 1.1fr 1fr;
  gap: 24px;
  align-items: start;
}
.pain-box {
  padding: 22px;
  border: 1px solid rgba(213,73,65,.2);
  border-radius: 12px;
  background: rgba(213,73,65,.04);
}
.pain-box h3 { margin: 0 0 14px; color: #0d2c5b; font-size: 16px; font-weight: 900; }
.pain-box li {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 8px;
  margin-bottom: 10px;
  color: #52677f;
  font-size: 13px;
  font-weight: 650;
  list-style: none;
}
.pain-box li i { color: var(--red); margin-top: 3px; }
.pain-illus {
  height: 180px;
  border-radius: 12px;
  background: linear-gradient(135deg, #e8f2ff, #d0e4ff);
  display: grid;
  place-items: center;
  color: var(--blue);
  font-size: 64px;
}

/* 分配模式卡片 */
.mode-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.mode-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 8px 20px rgba(33,86,170,.05);
}
.mode-card .icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 10px;
  border-radius: 10px;
  color: var(--blue);
  background: rgba(0,82,217,.08);
  font-size: 18px;
}
.mode-card h3 { margin: 0 0 6px; font-size: 14px; color: #0d2c5b; font-weight: 900; }
.mode-card p { margin: 0 0 12px; font-size: 12px; color: #52677f; line-height: 1.55; }
.mini-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px;
  border-radius: 6px;
  background: #f8fbff;
  font-size: 10px;
  font-weight: 800;
  color: #52677f;
}
.mini-flow .node {
  padding: 4px 8px;
  border-radius: 4px;
  background: var(--blue);
  color: #fff;
}
.mini-flow .arrow { color: var(--blue); }

/* 界面预览横排 */
.preview-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.preview-thumb {
  text-align: center;
}
.preview-thumb .frame {
  height: 100px;
  margin-bottom: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(135deg, #e8f2ff, #c5d9f5);
  box-shadow: 0 6px 16px rgba(33,86,170,.08);
}
.preview-thumb span { color: #52677f; font-size: 11px; font-weight: 750; }

/* CTA 深色卡片 */
.cta-card-dark {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 28px;
  padding: 36px 40px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(110deg, #0039a6, #0052d9);
  box-shadow: 0 20px 48px rgba(0,57,166,.25);
}
.cta-card-dark h2 { margin: 0 0 8px; font-size: 28px; font-weight: 900; }
.cta-card-dark p { margin: 0; color: rgba(255,255,255,.85); font-size: 14px; }