/* ==========================================================================
   新疆向量慧算信息技术有限公司 — 企业官网样式表
   Design tokens → 基础层 → 组件层 → 页面模块 → 响应式
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --ink: #0b1526;
  --ink-2: #16233a;
  --body: #33415c;
  --muted: #5f7191;
  --faint: #5c6d87;
  --line: #e3e9f3;
  --line-strong: #cfd8e7;

  --bg: #ffffff;
  --bg-soft: #f5f8fd;
  --bg-tint: #eef4ff;

  --brand: #1b54f5;
  --brand-dark: #133fc4;
  --brand-soft: #e8efff;
  --cyan: #0ea5e9;
  --cyan-soft: #e0f5fe;
  --violet: #6d4dff;
  --violet-soft: #efecff;
  --teal: #0d9488;
  --amber: #d97706;

  --navy-0: #050d1c;
  --navy-1: #0a1730;
  --navy-2: #102449;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --shadow-xs: 0 1px 2px rgba(11, 21, 38, .04);
  --shadow-sm: 0 2px 6px rgba(11, 21, 38, .05), 0 1px 2px rgba(11, 21, 38, .04);
  --shadow-md: 0 10px 30px -12px rgba(11, 21, 38, .16), 0 2px 8px rgba(11, 21, 38, .04);
  --shadow-lg: 0 30px 60px -28px rgba(11, 21, 38, .28);

  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;

  --maxw: 1180px;
  --gutter: 24px;
  --header-h: 66px;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.01em;
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

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

a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-dark); }

button { font: inherit; color: inherit; cursor: pointer; }

:focus-visible {
  outline: 3px solid rgba(27, 84, 245, .55);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: rgba(27, 84, 245, .16); }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding: 92px 0; }
.section--tight { padding: 68px 0; }
.section--soft { background: var(--bg-soft); border-block: 1px solid var(--line); }
.section--ink { background: var(--navy-1); color: #cfdcf2; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s ease, border-color .25s ease;
}
.site-header.is-stuck { box-shadow: 0 6px 24px -14px rgba(11, 21, 38, .3); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
}

.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand__mark {
  width: 38px; height: 38px;
  flex: 0 0 38px;
  border-radius: 11px;
  background: linear-gradient(145deg, var(--brand) 0%, #2f7bff 52%, var(--cyan) 100%);
  display: grid;
  place-items: center;
  box-shadow: 0 6px 16px -8px rgba(27, 84, 245, .8);
}
.brand__mark svg { width: 21px; height: 21px; }
.brand__text { display: flex; flex-direction: column; line-height: 1.18; }
.brand__name { font-size: 16.5px; font-weight: 700; letter-spacing: .01em; }
.brand__sub {
  font-size: 10.8px;
  color: #5f7191;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-weight: 500;
  margin-top: 5px;
}

.nav__menu { display: flex; align-items: center; gap: 2px; }
.nav__link {
  display: inline-block;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  color: var(--ink-2);
  font-size: 14.5px;
  font-weight: 500;
  transition: background .18s ease, color .18s ease;
}
.nav__link:hover { background: var(--bg-tint); color: var(--brand); }
.nav__link[aria-current="page"] { color: var(--brand); font-weight: 600; }
.nav__link[aria-current="page"]::after {
  content: "";
  display: block;
  height: 2px;
  margin: 5px auto -7px;
  width: 18px;
  border-radius: 2px;
  background: var(--brand);
}

.nav__actions { display: flex; align-items: center; gap: 10px; }

.nav__toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line-strong);
  background: #fff;
  border-radius: 10px;
  padding: 0;
  place-items: center;
}
.nav__toggle span {
  display: block;
  width: 18px; height: 1.8px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .22s ease, opacity .18s ease;
}
.nav__toggle span + span { margin-top: 4.5px; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.3px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.3px) rotate(-45deg); }

.mobile-menu {
  display: none;
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 12px var(--gutter) 22px;
}
.mobile-menu.is-open { display: block; }
.mobile-menu a {
  display: block;
  padding: 13px 4px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
  font-size: 15.5px;
  font-weight: 500;
}
.mobile-menu a[aria-current="page"] { color: var(--brand); font-weight: 600; }
.mobile-menu .btn { margin-top: 16px; width: 100%; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.35;
  color: #fff;
  background: var(--brand);
  transition: transform .16s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn:hover { background: var(--brand-dark); color: #fff; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--lg { padding: 14px 30px; font-size: 15.5px; }
.btn--sm { padding: 8px 16px; font-size: 13.5px; }
.btn--ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn--ghost:hover { background: var(--bg-tint); border-color: var(--brand); color: var(--brand); }
.btn--light { background: #fff; color: var(--brand); }
.btn--light:hover { background: #eef3ff; color: var(--brand-dark); }
.btn--outline-light {
  background: rgba(255, 255, 255, .06);
  border-color: rgba(255, 255, 255, .34);
  color: #fff;
}
.btn--outline-light:hover { background: rgba(255, 255, 255, .16); border-color: rgba(255, 255, 255, .6); color: #fff; }
.btn__arrow { transition: transform .2s ease; }
.btn:hover .btn__arrow { transform: translateX(3px); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--brand);
}
.link-arrow svg { transition: transform .2s ease; }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1100px 620px at 78% -8%, rgba(27, 84, 245, .5) 0%, transparent 62%),
    radial-gradient(820px 520px at 8% 8%, rgba(14, 165, 233, .26) 0%, transparent 60%),
    linear-gradient(168deg, var(--navy-0) 0%, var(--navy-1) 52%, #0d1e3d 100%);
  color: #dbe6f8;
  padding: 78px 0 92px;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, .052) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, .052) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(120% 100% at 50% 0%, #000 12%, transparent 78%);
  -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 12%, transparent 78%);
}
.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: 50%; top: -240px;
  width: 900px; height: 900px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(109, 77, 255, .3) 0%, transparent 62%);
  filter: blur(30px);
  pointer-events: none;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  gap: 60px;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px 7px 11px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, .2);
  background: rgba(255, 255, 255, .07);
  color: #cfe0fa;
  font-size: 12.8px;
  letter-spacing: .03em;
  backdrop-filter: blur(6px);
}
.badge__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #34e0a1;
  box-shadow: 0 0 0 4px rgba(52, 224, 161, .18);
}

.hero h1 {
  margin-top: 24px;
  color: #fff;
  font-size: clamp(2.05rem, 4.4vw, 3.45rem);
  line-height: 1.16;
  letter-spacing: -.022em;
  font-weight: 700;
}
.hero h1 .grad {
  background: linear-gradient(96deg, #7fb4ff 0%, #a9e8ff 48%, #c9b8ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lead {
  margin-top: 22px;
  max-width: 40em;
  font-size: 16.5px;
  line-height: 1.82;
  color: #b8cae6;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: 13px;
  color: #93a9c9;
}
.hero__meta span { display: inline-flex; align-items: center; gap: 7px; }
.hero__meta svg { width: 14px; height: 14px; color: #4f9bff; flex: 0 0 14px; }

/* Hero 视觉：AI 能力矩阵面板 */
.hero__panel {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(150deg, rgba(255, 255, 255, .3), rgba(255, 255, 255, .05) 42%, rgba(109, 77, 255, .34));
  box-shadow: var(--shadow-lg);
}
.hero__panel-inner {
  border-radius: calc(var(--radius-lg) - 1px);
  background: linear-gradient(168deg, rgba(11, 24, 48, .96), rgba(9, 19, 38, .99));
  padding: 22px;
  backdrop-filter: blur(10px);
}
.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #7f95b6;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.panel__live { display: inline-flex; align-items: center; gap: 6px; color: #34e0a1; letter-spacing: .06em; }
.panel__live::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #34e0a1;
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(52, 224, 161, .5); }
  50% { opacity: .65; box-shadow: 0 0 0 5px rgba(52, 224, 161, 0); }
}

.panel__rows { display: grid; gap: 2px; margin-top: 8px; }
.panel__row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 13px 10px;
  border-radius: 10px;
  font-size: 13.5px;
  color: #c6d6ee;
  transition: background .2s ease;
}
.panel__row:hover { background: rgba(255, 255, 255, .045); }
.panel__label { display: flex; align-items: center; gap: 10px; }
.panel__ico {
  width: 26px; height: 26px;
  border-radius: 7px;
  display: grid;
  place-items: center;
  background: rgba(79, 155, 255, .14);
  color: #7fb4ff;
  flex: 0 0 26px;
}
.panel__ico svg { width: 14px; height: 14px; }
.panel__val {
  font-family: var(--mono);
  font-size: 12.5px;
  color: #8fb3e0;
  font-variant-numeric: tabular-nums;
}
.panel__bar {
  grid-column: 1 / -1;
  height: 3px;
  margin-top: 8px;
  border-radius: 99px;
  background: rgba(255, 255, 255, .08);
  overflow: hidden;
}
.panel__bar i {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--cyan), var(--brand) 55%, var(--violet));
  width: 0;
  transition: width 1.4s cubic-bezier(.2, .8, .3, 1);
}
.is-visible .panel__bar i { width: var(--w, 70%); }

.panel__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, .08);
}
.chip {
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, .13);
  background: rgba(255, 255, 255, .05);
  font-size: 11.8px;
  color: #a8c0de;
  letter-spacing: .01em;
}

/* ---------- 数据条（重设计） ---------- */
.statband {
  position: relative;
  background:
    radial-gradient(900px 280px at 82% -30%, rgba(27, 84, 245, .07), transparent 62%),
    linear-gradient(180deg, #fff, #fbfcff);
  border-bottom: 1px solid var(--line);
  padding: 46px 0;
}
.statband__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.stat {
  position: relative;
  overflow: hidden;
  padding: 26px 24px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-xs);
  transition: transform .28s cubic-bezier(.2, .7, .3, 1),
              box-shadow .28s ease, border-color .28s ease;
  isolation: isolate;
}
/* 顶部品牌细线：hover 时展开 */
.stat::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 0;
  height: 2px;
  border-radius: 0 2px 2px 0;
  background: linear-gradient(90deg, var(--brand), var(--cyan));
  transition: width .42s cubic-bezier(.2, .7, .3, 1);
}
/* 角落光晕 */
.stat::after {
  content: "";
  position: absolute;
  right: -34px; top: -46px;
  width: 128px; height: 128px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27, 84, 245, .09), transparent 68%);
  opacity: 0;
  transition: opacity .3s ease, transform .5s ease;
  z-index: -1;
}
.stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #cfdcf8;
}
.stat:hover::before { width: 62px; }
.stat:hover::after { opacity: 1; transform: scale(1.15); }

/* 图标 */
.stat__ico {
  width: 34px; height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--brand-soft), #f6f9ff);
  color: var(--brand);
  margin-bottom: 15px;
  border: 1px solid #dce7ff;
  transition: background .28s ease, color .28s ease, transform .28s ease;
}
.stat__ico svg { width: 17px; height: 17px; }
.stat:hover .stat__ico {
  background: linear-gradient(145deg, var(--brand), #2f7bff);
  color: #fff;
  border-color: transparent;
  transform: scale(1.05);
}

.stat__num {
  display: flex;
  align-items: baseline;
  gap: 3px;
  font-size: clamp(1.7rem, 2.5vw, 2.15rem);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -.028em;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
}
.stat__num small {
  font-size: .46em;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--brand);
  margin-left: 2px;
}
.stat__label {
  margin-top: 9px;
  font-size: 13.2px;
  line-height: 1.55;
  color: var(--muted);
}
/* 标签左侧的短色条 */
.stat__label::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 2px;
  margin-right: 7px;
  vertical-align: middle;
  border-radius: 2px;
  background: var(--line-strong);
  transition: background .28s ease, width .28s ease;
}
.stat:hover .stat__label::before { background: var(--brand); width: 18px; }

/* ---------- Section head ---------- */
.section-head { max-width: 760px; }
.section-head--center { margin-inline: auto; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--brand);
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--brand), var(--cyan));
}
.eyebrow--light { color: #7fb4ff; }
.section--ink .eyebrow::before { background: linear-gradient(90deg, #4f9bff, #7fe3ff); }

.section-title {
  margin-top: 14px;
  font-size: clamp(1.6rem, 2.9vw, 2.3rem);
  line-height: 1.28;
  letter-spacing: -.018em;
}
.section-lead {
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}
.section--ink .section-title { color: #fff; }
.section--ink .section-lead { color: #a9bedb; }
.section-head--row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  max-width: none;
}
.section-head--row .section-lead { max-width: 620px; }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 22px; }
/* 网格子项默认按内容最小宽度撑开，宽表格会撑破布局，统一归零 */
.grid > * { min-width: 0; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--aside { grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr); gap: 56px; align-items: start; }

.card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-xs);
  transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease;
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-strong);
}
.card__icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--brand-soft);
  color: var(--brand);
  margin-bottom: 18px;
}
.card__icon svg { width: 21px; height: 21px; }
.card__icon--cyan { background: var(--cyan-soft); color: #0284c7; }
.card__icon--violet { background: var(--violet-soft); color: var(--violet); }
.card__icon--teal { background: #dcfaf3; color: var(--teal); }
.card__icon--amber { background: #fdf2dd; color: var(--amber); }

.card h3 { font-size: 17.5px; }
.card p { margin-top: 10px; font-size: 14.5px; line-height: 1.75; color: var(--muted); }
.card__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.tag {
  padding: 3px 9px;
  border-radius: 5px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}
.card__foot { margin-top: auto; padding-top: 18px; }

.card--flat { box-shadow: none; }
.card--flat:hover { transform: none; box-shadow: none; border-color: var(--brand); }

/* 编号卡 */
.card--num { padding-top: 22px; }
.card__no {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--faint);
}

/* 能力清单卡（深色） */
.solution-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: #fff;
  padding: 30px;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 22px;
  transition: border-color .22s ease, box-shadow .24s ease, transform .24s ease;
}
.solution-card:hover {
  border-color: #c9d8f8;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.solution-card__rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.solution-card__icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(150deg, var(--brand-soft), #f4f8ff);
  color: var(--brand);
  border: 1px solid #dbe6ff;
}
.solution-card__icon svg { width: 24px; height: 24px; }
.solution-card h3 { font-size: 19px; }
.solution-card__desc { margin-top: 10px; font-size: 14.8px; line-height: 1.78; color: var(--muted); }
.solution-card__cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 26px;
  margin-top: 18px;
}
.solution-card__cols li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--body);
}
.solution-card__cols li::before {
  content: "";
  position: absolute;
  left: 2px; top: .66em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brand);
  opacity: .5;
}

/* ---------- 能力矩阵（分层架构图） ---------- */
.stack { display: grid; gap: 12px; }
.stack__layer {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  padding: 18px 22px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, .1);
  background: linear-gradient(100deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .025));
  transition: border-color .2s ease, background .2s ease;
}
.stack__layer:hover { border-color: rgba(127, 180, 255, .45); background: rgba(127, 180, 255, .09); }
.stack__key {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #7fb4ff;
}
.stack__body { display: flex; flex-wrap: wrap; gap: 8px; }
.stack__body span {
  padding: 5px 11px;
  border-radius: 6px;
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .1);
  font-size: 13px;
  color: #c7d8f1;
}

/* ---------- 步骤 / 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; counter-reset: step; }
.step {
  position: relative;
  padding: 0 20px 0 0;
}
.step::before {
  content: "";
  position: absolute;
  top: 19px; left: 40px; right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--line-strong), transparent);
}
.step:last-child::before { display: none; }
.step__no {
  width: 38px; height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #fff;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  position: relative;
  z-index: 1;
}
.step:first-child .step__no { background: var(--brand); border-color: var(--brand); color: #fff; }
.step h3 { margin-top: 16px; font-size: 15.5px; }
.step p { margin-top: 7px; font-size: 13.8px; line-height: 1.7; color: var(--muted); }

/* ---------- 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  -webkit-overflow-scrolling: touch;
}
table.data {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 14.2px;
}
table.data caption {
  text-align: left;
  padding: 16px 20px 0;
  font-size: 13px;
  color: var(--faint);
}
table.data th,
table.data td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.data thead th {
  background: var(--bg-soft);
  font-size: 12.6px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: .04em;
  text-transform: uppercase;
  white-space: nowrap;
}
table.data tbody tr:last-child td { border-bottom: 0; }
table.data tbody tr:hover { background: #fafcff; }
table.data td strong { color: var(--ink); font-weight: 600; }
table.data .cell-brand { color: var(--brand); font-weight: 600; }

/* 报价卡 */
.price-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease;
}
.price-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.price-card--feature {
  border-color: #b9cdfa;
  box-shadow: 0 18px 40px -26px rgba(27, 84, 245, .55);
  position: relative;
}
.price-card--feature::before {
  content: "最多商家选择";
  position: absolute;
  top: -12px; left: 28px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--brand);
  color: #fff;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .02em;
}
.price-card__name { font-size: 15px; font-weight: 600; color: var(--brand); }
.price-card__amount {
  margin-top: 14px;
  font-size: 34px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -.02em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.price-card__amount span { font-size: 13.5px; font-weight: 500; color: var(--faint); margin-left: 4px; }
.price-card__desc {
  margin-top: 14px;
  padding: 13px 15px;
  border-radius: 10px;
  background: var(--bg-soft);
  font-size: 13.6px;
  line-height: 1.7;
  color: var(--muted);
}
.price-card ul { margin-top: 18px; display: grid; gap: 10px; }
.price-card li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--body);
}
.price-card li::before {
  content: "";
  position: absolute;
  left: 0; top: .4em;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--brand-soft)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231b54f5' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E")
    center / 9px no-repeat;
}

/* ---------- 案例卡 ---------- */
.case-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  transition: transform .24s ease, box-shadow .24s ease;
}
.case-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.case-card__top {
  padding: 22px 26px;
  background: linear-gradient(140deg, #0c1b36, #14315e);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.case-card__top::after {
  content: "";
  position: absolute;
  right: -40px; top: -60px;
  width: 180px; height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 155, 255, .45), transparent 66%);
}
.case-card__sector {
  font-size: 12px;
  letter-spacing: .1em;
  color: #7fb4ff;
  text-transform: uppercase;
}
.case-card__top h3 { margin-top: 8px; color: #fff; font-size: 17px; position: relative; }
.case-card__metric {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 18px;
  position: relative;
}
.case-card__metric b {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -.02em;
  color: #fff;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.case-card__metric span { font-size: 12.8px; color: #a9c2e2; }
.case-card__body { padding: 22px 26px 26px; display: flex; flex-direction: column; flex: 1; }
.case-card__body p { font-size: 14px; line-height: 1.78; color: var(--muted); }
.case-card__result {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--line-strong);
}
.case-card__result div { font-size: 13px; color: var(--muted); }
.case-card__result b { display: block; font-size: 16px; color: var(--ink); font-variant-numeric: tabular-nums; }

/* ---------- 深色特色块 ---------- */
.feature-dark {
  border-radius: var(--radius-lg);
  background:
    radial-gradient(760px 320px at 88% 0%, rgba(27, 84, 245, .34), transparent 62%),
    linear-gradient(160deg, #081428, #0d2144);
  border: 1px solid rgba(255, 255, 255, .09);
  padding: 44px;
  color: #c6d6ee;
}
.feature-dark h3 { color: #fff; font-size: 21px; }
.feature-dark p { color: #a9bedb; margin-top: 12px; font-size: 14.8px; line-height: 1.8; }
.feature-dark__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 32px; }
.feature-dark__item { border-top: 1px solid rgba(255, 255, 255, .14); padding-top: 16px; }
.feature-dark__item b { display: block; color: #fff; font-size: 15px; }
.feature-dark__item span { display: block; margin-top: 6px; font-size: 13.4px; color: #93a9c9; line-height: 1.7; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; }
.faq__item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.faq__item[open] { border-color: #c6d7fa; box-shadow: var(--shadow-sm); }
.faq__item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 19px 22px;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "";
  flex: 0 0 18px;
  width: 18px; height: 18px;
  margin-top: 3px;
  border-radius: 50%;
  background: var(--bg-soft)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235f7191' stroke-width='2.6' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E")
    center / 11px no-repeat;
  transition: transform .22s ease, background-color .2s ease;
}
.faq__item[open] summary::after {
  transform: rotate(45deg);
  background-color: var(--brand-soft);
}
.faq__answer {
  padding: 0 22px 22px;
  font-size: 14.6px;
  line-height: 1.85;
  color: var(--muted);
}
.faq__answer p + p { margin-top: 10px; }
.faq__answer ul { margin-top: 10px; }
.faq__answer li { position: relative; padding-left: 16px; margin-top: 6px; }
.faq__answer li::before {
  content: "";
  position: absolute;
  left: 2px; top: .68em;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--brand);
  opacity: .55;
}

/* ---------- 实体信息（GEO） ---------- */
.entity {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  overflow: hidden;
}
.entity__head {
  padding: 20px 26px;
  background: linear-gradient(120deg, #0c1b36, #16376b);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.entity__head h2, .entity__head h3 { color: #fff; font-size: 17px; }
.entity__head span { font-size: 12px; color: #9db8dd; letter-spacing: .06em; }
.entity dl {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.entity dl > div {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 14px;
  padding: 15px 26px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.entity dl > div:nth-child(odd) { border-right: 1px solid var(--line); }
.entity dt { color: var(--muted); }
.entity dd { margin: 0; color: var(--ink); font-weight: 500; word-break: break-all; }
.entity__note {
  padding: 14px 26px;
  font-size: 12.6px;
  color: var(--faint);
  background: var(--bg-soft);
}

/* ---------- CTA ---------- */
.cta {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: 54px 48px;
  background:
    radial-gradient(700px 340px at 82% 10%, rgba(109, 77, 255, .42), transparent 60%),
    radial-gradient(600px 300px at 12% 90%, rgba(14, 165, 233, .3), transparent 62%),
    linear-gradient(150deg, #071226, #0f2450);
  color: #d6e2f6;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, .09);
}
.cta h2 { color: #fff; font-size: clamp(1.45rem, 2.4vw, 1.95rem); line-height: 1.34; }
.cta p { margin-top: 12px; font-size: 15px; color: #a9bedb; max-width: 46em; }
.cta__actions { display: flex; flex-direction: column; gap: 10px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-0); color: #93a9c9; padding: 62px 0 0; font-size: 14px; }
.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 44px;
}
.site-footer .brand { color: #fff; }
.site-footer .brand__sub { color: #6c82a3; }
.footer__about { margin-top: 18px; max-width: 34em; font-size: 13.8px; line-height: 1.85; color: #8ea4c4; }
.footer__title {
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer__list { display: grid; gap: 11px; }
.footer__list a { color: #a5bad8; font-size: 13.9px; }
.footer__list a:hover { color: #fff; }
.footer__contact li { display: flex; gap: 9px; font-size: 13.9px; line-height: 1.7; color: #a5bad8; }
.footer__contact svg { width: 15px; height: 15px; flex: 0 0 15px; margin-top: .34em; color: #4f9bff; }
.footer__bottom {
  margin-top: 48px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 22px 0 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12.6px;
  color: #7a8fae;
}
.footer__bottom p { line-height: 1.7; }
/* 深色底上的链接需要更亮的颜色才够对比度 */
.footer__bottom a {
  color: #a5bad8;
  text-decoration: underline;
  text-decoration-color: rgba(165, 186, 216, .38);
  text-underline-offset: 2px;
  transition: color .18s ease, text-decoration-color .18s ease;
}
.footer__bottom a:hover { color: #fff; text-decoration-color: rgba(255, 255, 255, .6); }

/* ---------- 页面头（内页） ---------- */
.pagehead {
  position: relative;
  overflow: hidden;
  padding: 58px 0 62px;
  background:
    radial-gradient(900px 420px at 88% -10%, rgba(27, 84, 245, .42), transparent 62%),
    linear-gradient(160deg, var(--navy-0), #0d1f3f);
  color: #c6d6ee;
}
.pagehead::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(90% 100% at 30% 0%, #000, transparent 74%);
  -webkit-mask-image: radial-gradient(90% 100% at 30% 0%, #000, transparent 74%);
  pointer-events: none;
}
.pagehead h1 {
  color: #fff;
  font-size: clamp(1.75rem, 3.4vw, 2.5rem);
  letter-spacing: -.02em;
  margin-top: 14px;
  max-width: 22em;
}
.pagehead p {
  margin-top: 16px;
  max-width: 46em;
  font-size: 15.6px;
  line-height: 1.8;
  color: #a9bedb;
}

.breadcrumb { font-size: 12.8px; color: #8ba3c6; }
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumb li { display: flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "/"; color: #4d6489; }
.breadcrumb a { color: #b6cae6; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb [aria-current="page"] { color: #dbe6f8; }

/* ---------- 杂项 ---------- */
.prose { max-width: 74ch; }
.prose h2 { margin-top: 0; font-size: 1.4rem; }
.prose h3 { margin-top: 30px; font-size: 1.1rem; }
.prose p { margin-top: 14px; font-size: 15.4px; line-height: 1.85; color: var(--body); }
.prose ul { margin-top: 14px; display: grid; gap: 9px; }
.prose ul li { position: relative; padding-left: 20px; font-size: 15px; line-height: 1.78; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 3px; top: .72em;
  width: 6px; height: 6px;
  border-radius: 2px;
  background: var(--brand);
  opacity: .45;
  transform: rotate(45deg);
}

.note {
  padding: 16px 20px;
  border-left: 3px solid var(--brand);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--bg-tint);
  font-size: 13.8px;
  line-height: 1.78;
  color: var(--body);
}
.note--amber { border-color: var(--amber); background: #fdf6e9; }

.kv-list { display: grid; gap: 14px; margin-top: 20px; }
.kv-list > div { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 14px; font-size: 14px; }
.kv-list dt, .kv-list b { color: var(--muted); font-weight: 500; }
.kv-list dd, .kv-list span { margin: 0; color: var(--ink); }

.quote {
  padding: 26px 28px;
  border-radius: var(--radius);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: 15.2px;
  line-height: 1.85;
  color: var(--ink-2);
}
.quote footer { margin-top: 14px; font-size: 13px; color: var(--muted); }

.divider { height: 1px; background: var(--line); border: 0; margin: 0; }

/* 联系表单 */
.form { display: grid; gap: 16px; }
.form__row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.field { display: grid; gap: 7px; }
.field label { font-size: 13.4px; font-weight: 600; color: var(--ink-2); }
.field label .req { color: #dc2626; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: #fff;
  font: inherit;
  font-size: 14.5px;
  color: var(--ink);
  transition: border-color .18s ease, box-shadow .18s ease;
}
.field textarea { min-height: 118px; resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(27, 84, 245, .14);
}
.field__hint { font-size: 12.4px; color: var(--faint); }
.form__status {
  display: none;
  padding: 13px 16px;
  border-radius: 9px;
  background: #e9f9f1;
  border: 1px solid #b9ecd4;
  color: #0f7a4d;
  font-size: 14px;
}
.form__status.is-shown { display: block; }

/* 联系信息卡 */
.contact-card {
  display: flex;
  gap: 15px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.contact-card:last-child { border-bottom: 0; }
.contact-card__ico {
  width: 40px; height: 40px;
  flex: 0 0 40px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: var(--brand-soft);
  color: var(--brand);
}
.contact-card__ico svg { width: 18px; height: 18px; }
.contact-card h3 { font-size: 14.5px; }
.contact-card p { margin-top: 5px; font-size: 14.2px; line-height: 1.7; color: var(--muted); }
.contact-card a { font-weight: 500; }

/* Hero 首屏图片区 */
.hero__media {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.hero__media .figure {
  border-color: rgba(255, 255, 255, .16);
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, .8);
}
.hero__media .figure figcaption { font-size: 11.8px; padding: 20px 12px 10px; }
.hero__badges {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.hero__badge {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, .16);
  background: rgba(255, 255, 255, .07);
  backdrop-filter: blur(8px);
}
.hero__badge b { color: #fff; font-size: 14px; font-weight: 600; }
.hero__badge em {
  font-style: normal;
  font-size: 11.8px;
  color: #a9c2e2;
  letter-spacing: .01em;
}

/* 侧栏配图：填补问答/说明区块左侧下方留白
   图片自下而上渐隐，与浅底自然融合，不形成硬边 */
.aside-visual {
  position: relative;
  margin-top: 30px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  isolation: isolate;
  background: var(--bg-soft);
  box-shadow: var(--shadow-sm);
  /* 顶部与底部的柔和淡出，避免图片边界生硬 */
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 26px, #000 calc(100% - 54px), transparent 100%);
  mask-image: linear-gradient(to bottom, transparent 0, #000 26px, #000 calc(100% - 54px), transparent 100%);
}
.aside-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  aspect-ratio: 4 / 3;
  transition: transform .8s cubic-bezier(.2, .7, .3, 1);
}
.aside-visual:hover img { transform: scale(1.03); }
/* 底部再压一层同色渐隐，确保与任意底色衔接都不突兀 */
.aside-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  /* 回流：不支持 color-mix 时用固定透明度渐变，视觉差异极小 */
  background: linear-gradient(to top,
    var(--aside-fade, #f5f8fd) 0%,
    rgba(245, 248, 253, .78) 16%,
    rgba(245, 248, 253, .38) 36%,
    rgba(245, 248, 253, 0) 62%);
  pointer-events: none;
}
@supports (color: color-mix(in srgb, red 50%, transparent)) {
  .aside-visual::after {
    background: linear-gradient(to top,
      var(--aside-fade, #f5f8fd) 0%,
      color-mix(in srgb, var(--aside-fade, #f5f8fd) 78%, transparent) 16%,
      color-mix(in srgb, var(--aside-fade, #f5f8fd) 38%, transparent) 36%,
      transparent 62%);
  }
}
/* 白底区块用白色渐隐（回流与增强各写一份，避免色差） */
.section:not(.section--soft) .aside-visual { --aside-fade: #fff; }
.section:not(.section--soft) .aside-visual::after {
  background: linear-gradient(to top,
    #fff 0%, rgba(255, 255, 255, .78) 16%, rgba(255, 255, 255, .38) 36%, rgba(255, 255, 255, 0) 62%);
}
@supports (color: color-mix(in srgb, red 50%, transparent)) {
  .section:not(.section--soft) .aside-visual::after {
    background: linear-gradient(to top,
      #fff 0%,
      color-mix(in srgb, #fff 78%, transparent) 16%,
      color-mix(in srgb, #fff 38%, transparent) 36%,
      transparent 62%);
  }
}
.aside-visual__caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 2;
  padding: 0 22px 22px;
  font-size: 12.8px;
  line-height: 1.7;
  color: var(--ink-2);
  font-weight: 500;
}
.aside-visual__caption b {
  display: block;
  font-size: 14px;
  color: var(--ink);
  font-weight: 600;
  margin-bottom: 3px;
}

@media (max-width: 900px) {
  .aside-visual { margin-top: 24px; }
  .aside-visual img { aspect-ratio: 16 / 9; }
}

/* ---------- 图片版式 ---------- */
/* 通用图片容器：统一比例、圆角与裁切 */
.figure {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--bg-soft);
  border: 1px solid var(--line);
}
.figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.figure--16x9 { aspect-ratio: 16 / 9; }
.figure--4x3 { aspect-ratio: 4 / 3; }
.figure--3x2 { aspect-ratio: 3 / 2; }
.figure--1x1 { aspect-ratio: 1 / 1; }
.figure figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 26px 20px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: #e9f1fd;
  background: linear-gradient(to top, rgba(5, 13, 28, .82), rgba(5, 13, 28, 0));
}

/* 图文分栏：左文右图 / 左图右文 */
.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
  align-items: center;
}
.split > * { min-width: 0; }
.split--media-left .split__media { order: -1; }

/* 大图叠加文字（业务主视觉） */
.visual {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  isolation: isolate;
}
.visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .8s cubic-bezier(.2, .7, .3, 1);
}
.visual:hover img { transform: scale(1.03); }
.visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top, rgba(4, 10, 22, .92) 0%, rgba(4, 10, 22, .78) 32%, rgba(4, 10, 22, .46) 62%, rgba(4, 10, 22, .1) 100%),
    linear-gradient(115deg, rgba(5, 13, 28, .72) 0%, rgba(5, 13, 28, .3) 52%, rgba(5, 13, 28, .06) 100%);
  z-index: 1;
}
.visual__body {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 2;
  padding: 34px 36px;
  color: #eaf2ff;
}
.visual__body h2 { color: #fff; font-size: clamp(1.2rem, 2vw, 1.6rem); letter-spacing: -.015em; }
.visual__body p { margin-top: 10px; font-size: 14.6px; line-height: 1.8; color: #c3d4ec; max-width: 40em; }
/* 宽幅主视觉：仅用比例控制高度，不用 min-height，避免反推宽度导致溢出 */
.visual--wide { aspect-ratio: 21 / 9; }
.visual--tall { min-height: 420px; }

/* 图片卡：上方图片，下方内容 */
.photo-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.photo-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-strong);
}
.photo-card__media {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--bg-soft);
}
.photo-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .7s cubic-bezier(.2, .7, .3, 1);
}
.photo-card:hover .photo-card__media img { transform: scale(1.05); }
.photo-card__badge {
  position: absolute;
  left: 14px; top: 14px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .95);
  color: var(--ink);
  font-size: 11.8px;
  font-weight: 600;
  letter-spacing: .02em;
  backdrop-filter: blur(6px);
  box-shadow: 0 2px 8px rgba(5, 13, 28, .14);
}
.photo-card__body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.photo-card__body h3 { font-size: 17px; }
.photo-card__body p { margin-top: 9px; font-size: 14.2px; line-height: 1.75; color: var(--muted); }
.photo-card__body .card__tags { margin-top: 14px; }

/* 图片墙：所有项目统一比例，保证任意图数都能等高对齐 */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  align-items: stretch;
}
/* 两图：并排，避免三列时右侧空一格 */
.gallery--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
/* 四图及以上：列数随图数走，保证末行不留空位 */
.gallery--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
/* 自动适配：宽度不足时按最小项宽收缩列数，图数可被列数整除则始终填满 */
.gallery--auto { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.gallery__item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  aspect-ratio: 4 / 3;
  background: var(--bg-soft);
  display: block;
}
.gallery__item img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .7s cubic-bezier(.2, .7, .3, 1); }
.gallery__item:hover img { transform: scale(1.06); }
.gallery__item span {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 22px 14px 11px;
  font-size: 12.6px;
  line-height: 1.55;
  color: #eaf2ff;
  background: linear-gradient(to top, rgba(5, 13, 28, .82), transparent);
}

/* 数据统计条：与 statband 同一套卡片语言 */
.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}
.metric-strip > div {
  position: relative;
  overflow: hidden;
  padding: 20px 20px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-xs);
  transition: transform .26s cubic-bezier(.2, .7, .3, 1),
              box-shadow .26s ease, border-color .26s ease;
  isolation: isolate;
}
/* 顶部品牌细线 */
.metric-strip > div::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 2px;
  border-radius: 0 2px 2px 0;
  background: linear-gradient(90deg, var(--brand), var(--cyan));
  transition: width .4s cubic-bezier(.2, .7, .3, 1);
}
/* 角落光晕 */
.metric-strip > div::after {
  content: "";
  position: absolute;
  right: -28px; top: -38px;
  width: 104px; height: 104px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27, 84, 245, .085), transparent 68%);
  opacity: 0;
  transition: opacity .3s ease, transform .45s ease;
  z-index: -1;
}
.metric-strip > div:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #cfdcf8;
}
.metric-strip > div:hover::before { width: 48px; }
.metric-strip > div:hover::after { opacity: 1; transform: scale(1.12); }

.metric-strip i {
  display: grid;
  place-items: center;
  width: 26px; height: 26px;
  border-radius: 8px;
  background: var(--brand-soft);
  color: var(--brand);
  margin-bottom: 11px;
  transition: background .26s ease, color .26s ease, transform .26s ease;
}
.metric-strip i svg { width: 13px; height: 13px; }
.metric-strip > div:hover i {
  background: var(--brand);
  color: #fff;
  transform: scale(1.06);
}
.metric-strip b {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -.025em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.metric-strip b em {
  font-style: normal;
  font-size: .48em;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--brand);
  margin-left: 2px;
}
.metric-strip span {
  display: block;
  margin-top: 7px;
  font-size: 12.8px;
  color: var(--muted);
  line-height: 1.58;
}
.metric-strip span::before {
  content: "";
  display: inline-block;
  width: 10px; height: 2px;
  margin-right: 6px;
  vertical-align: middle;
  border-radius: 2px;
  background: var(--line-strong);
  transition: background .26s ease, width .26s ease;
}
.metric-strip > div:hover span::before { background: var(--brand); width: 15px; }

/* 价目条（加购项）：与统计卡区分，弱化卡片感 */
.pricestrip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.pricestrip > div {
  padding: 18px 20px;
  border-radius: var(--radius);
  border: 1px dashed var(--line-strong);
  background: linear-gradient(160deg, #fbfdff, #f6f9ff);
  text-align: center;
  transition: border-color .24s ease, background .24s ease, transform .24s ease;
}
.pricestrip > div:hover {
  border-color: var(--brand);
  border-style: solid;
  background: #fff;
  transform: translateY(-2px);
}
.pricestrip b {
  display: block;
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}
.pricestrip b em {
  font-style: normal;
  font-size: .62em;
  font-weight: 600;
  color: var(--brand);
  margin-left: 3px;
}
.pricestrip span {
  display: block;
  margin-top: 6px;
  font-size: 12.8px;
  color: var(--muted);
  line-height: 1.55;
}
@media (max-width: 640px) {
  .pricestrip { grid-template-columns: 1fr; }
}

/* 流程条：带序号气泡 + 连接线的步骤卡 */
.flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  align-items: stretch;
}
.flow--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.flow__step {
  position: relative;
  padding: 0 16px 0 0;
}
.flow__step:last-child { padding-right: 0; }

/* 序号气泡 */
.flow__no {
  position: relative;
  z-index: 2;
  width: 38px; height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #fff;
  border: 1.5px solid var(--line-strong);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .02em;
  transition: background .26s ease, border-color .26s ease, color .26s ease,
              transform .26s ease, box-shadow .26s ease;
}
.flow__step:first-child .flow__no {
  background: linear-gradient(145deg, var(--brand), #2f7bff);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 6px 16px -8px rgba(27, 84, 245, .9);
}
/* 连接线：从气泡右侧贯穿到下一格 */
.flow__step::after {
  content: "";
  position: absolute;
  top: 19px; left: 46px; right: 2px;
  height: 1.5px;
  background: linear-gradient(90deg, var(--line-strong) 0%, var(--line-strong) 55%, transparent 100%);
  z-index: 1;
}
.flow__step:last-child::after { display: none; }

/* 卡片主体 */
.flow__body {
  margin-top: 16px;
  height: calc(100% - 54px);
  display: flex;
  flex-direction: column;
  padding: 18px 18px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  transition: transform .26s ease, box-shadow .26s ease, border-color .26s ease;
}
.flow__step:hover .flow__body {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #d3e0f8;
}
.flow__step:hover .flow__no {
  background: var(--brand);
  border-color: transparent;
  color: #fff;
  transform: scale(1.06);
  box-shadow: 0 6px 16px -8px rgba(27, 84, 245, .9);
}
.flow__step:hover::after {
  background: linear-gradient(90deg, var(--brand) 0%, var(--line-strong) 70%, transparent 100%);
}

.flow__tag {
  display: inline-block;
  align-self: flex-start;
  padding: 3px 9px;
  border-radius: 5px;
  background: var(--brand-soft);
  color: var(--brand);
  font-family: var(--mono);
  font-size: 10.8px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.flow__body h3 { margin-top: 10px; font-size: 15.5px; letter-spacing: -.01em; }
.flow__body p { margin-top: 8px; font-size: 13.2px; line-height: 1.72; color: var(--muted); }

/* 业务主视觉卡（两大主营） */
.biz-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  align-items: stretch;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  transition: box-shadow .3s ease, transform .3s ease;
}
.biz-hero:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.biz-hero__media { position: relative; overflow: hidden; min-height: 280px; }
.biz-hero__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s cubic-bezier(.2, .7, .3, 1); }
.biz-hero:hover .biz-hero__media img { transform: scale(1.04); }
.biz-hero__tag {
  position: absolute;
  left: 18px; top: 18px;
  padding: 6px 13px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .95);
  font-size: 11.8px;
  font-weight: 600;
  color: var(--brand);
  box-shadow: 0 2px 10px rgba(5, 13, 28, .16);
}
.biz-hero__body { padding: 34px 36px; display: flex; flex-direction: column; justify-content: center; }
.biz-hero__body h3 { font-size: clamp(1.18rem, 1.8vw, 1.5rem); }
.biz-hero__body > p { margin-top: 12px; font-size: 14.8px; line-height: 1.8; color: var(--muted); }
.biz-hero__list { margin-top: 18px; display: grid; gap: 9px; }
.biz-hero__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--body);
}
.biz-hero__list li::before {
  content: "";
  position: absolute;
  left: 0; top: .52em;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--brand-soft)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231b54f5' stroke-width='3.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E")
    center / 8px no-repeat;
}
.biz-hero__body .btn { margin-top: 22px; align-self: flex-start; }

@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; gap: 28px; }
  .split--media-left .split__media { order: 0; }
  .biz-hero { grid-template-columns: 1fr; }
  .biz-hero__media { min-height: 220px; }
  .biz-hero__body { padding: 26px 24px 30px; }
  .gallery--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery--auto { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
  .metric-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  /* 流程条：900px 以下改 2 列 */
  .flow,
  .flow--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 22px; }
  .flow__step { padding-right: 14px; }
  /* 每行第 2 个断掉连接线 */
  .flow__step:nth-child(2n)::after { display: none; }
  .flow__body { height: auto; }
  .visual__body { padding: 24px 22px; }
}

@media (max-width: 640px) {
  .gallery,
  .gallery--2,
  .gallery--3,
  .gallery--4,
  .gallery--auto { grid-template-columns: 1fr; }
  .metric-strip { grid-template-columns: 1fr; }
}

/* ---------- 留资入口（内嵌表单条） ---------- */
.leadbox {
  position: relative;
  overflow: hidden;
  margin-top: 34px;
  padding: 34px 36px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(680px 300px at 88% 0%, rgba(27, 84, 245, .09), transparent 62%),
    linear-gradient(160deg, #f8fbff, #eef4ff);
  border: 1px solid #dbe6fb;
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  gap: 38px;
  align-items: center;
}
.leadbox__intro h3 {
  font-size: clamp(1.12rem, 1.7vw, 1.32rem);
  letter-spacing: -.015em;
}
.leadbox__intro > p {
  margin-top: 11px;
  font-size: 14.4px;
  line-height: 1.8;
  color: var(--muted);
}
.leadbox__points {
  margin-top: 16px;
  display: grid;
  gap: 8px;
}
.leadbox__points li {
  position: relative;
  padding-left: 21px;
  font-size: 13.6px;
  line-height: 1.65;
  color: var(--body);
}
.leadbox__points li::before {
  content: "";
  position: absolute;
  left: 0; top: .5em;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--brand-soft)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231b54f5' stroke-width='3.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E")
    center / 8px no-repeat;
}
.leadbox__form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.leadbox__form .form { gap: 13px; }
.leadbox__form .form__row { gap: 13px; }
.leadbox__form .field input,
.leadbox__form .field select { padding: 10px 13px; font-size: 14px; }
.leadbox__form .btn { width: 100%; margin-top: 2px; padding: 12px 22px; }
.leadbox__note {
  margin-top: 11px;
  font-size: 12.2px;
  line-height: 1.65;
  color: var(--faint);
  text-align: center;
}
.leadbox__status {
  display: none;
  margin-top: 10px;
  padding: 11px 14px;
  border-radius: 8px;
  font-size: 13.4px;
  line-height: 1.65;
  background: #e9f9f1;
  border: 1px solid #b9ecd4;
  color: #0f7a4d;
}
.leadbox__status.is-shown { display: block; }

@media (max-width: 900px) {
  .leadbox {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 26px 22px;
    margin-top: 28px;
  }
  .leadbox__form { padding: 20px; }
}

/* ---------- 滚动动画：仅在 JS 可用时隐藏初始状态，避免脚本失效后内容不可见 ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s cubic-bezier(.2, .7, .3, 1), transform .6s cubic-bezier(.2, .7, .3, 1);
}
.js .reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .07s; }
.reveal[data-delay="2"] { transition-delay: .14s; }
.reveal[data-delay="3"] { transition-delay: .21s; }
.reveal[data-delay="4"] { transition-delay: .28s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero__grid { grid-template-columns: 1fr; gap: 46px; }
  .hero__panel { max-width: 620px; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--aside { grid-template-columns: 1fr; gap: 34px; }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 34px; }
  .step::before { display: none; }
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px; }
  .cta { grid-template-columns: 1fr; gap: 28px; padding: 40px 32px; }
  .cta__actions { flex-direction: row; flex-wrap: wrap; }
  .feature-dark__grid { grid-template-columns: 1fr; gap: 20px; }
}

@media (max-width: 900px) {
  :root { --gutter: 20px; }
  .nav__menu { display: none; }
  .nav__toggle { display: grid; }
  .nav__actions .btn { display: none; }
  .section { padding: 66px 0; }
  .section--tight { padding: 52px 0; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .statband { padding: 34px 0; }
  .statband__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .stat { padding: 22px 20px; }
  .section-head--row { flex-direction: column; align-items: flex-start; gap: 18px; }
  .solution-card { grid-template-columns: 1fr; gap: 16px; padding: 24px; }
  .solution-card__rail { flex-direction: row; }
  .stack__layer { grid-template-columns: 1fr; gap: 10px; }
  .entity dl { grid-template-columns: 1fr; }
  .entity dl > div:nth-child(odd) { border-right: 0; }
  .hero { padding: 56px 0 66px; }
  .pagehead { padding: 42px 0 46px; }
  .feature-dark { padding: 30px 24px; }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .flow,
  .flow--4 { grid-template-columns: 1fr; row-gap: 18px; }
  .flow__step::after { display: none; }
  .flow__step:nth-child(2n)::after { display: none; }
  .flow__no { width: 34px; height: 34px; font-size: 11.8px; }
  .flow__body { padding: 16px 16px 18px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .solution-card__cols { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; row-gap: 26px; }
  .footer__grid { grid-template-columns: 1fr; gap: 30px; }
  .hero h1 { font-size: 1.85rem; }
  .hero__lead { font-size: 15.4px; }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .hero__cta .btn { width: 100%; }
  .statband__grid { grid-template-columns: 1fr; gap: 10px; }
  .stat { padding: 20px 18px; }
  .stat__ico { width: 30px; height: 30px; margin-bottom: 12px; }
  .case-card__result { grid-template-columns: 1fr; }
  .cta { padding: 32px 22px; }
  .cta__actions .btn { width: 100%; }
  .entity dl > div { grid-template-columns: 1fr; gap: 4px; padding: 13px 20px; }
  .price-card { padding: 22px; }
  .faq__item summary { padding: 16px 18px; font-size: 14.8px; }
  .faq__answer { padding: 0 18px 18px; font-size: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}