/* ==========================================================================
   上海智代科技有限公司 · 官网样式表
   设计基调：简约 / 大气 / 留白 / 克制的科技感
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 文字 */
  --ink: #0c1524;
  --ink-2: #3c4a60;
  --ink-3: #6b7a90;
  --ink-invert: #eaf0fb;

  /* 背景与描边 */
  --bg: #ffffff;
  --bg-soft: #f5f8fd;
  --bg-deep: #070d19;
  --line: #e5ebf5;
  --line-strong: #d3dcea;

  /* 品牌色 */
  --brand: #1a4ed8;
  --brand-deep: #10309c;
  --brand-soft: #eaf1ff;
  --cyan: #0ea5e9;
  --violet: #6d5efc;
  --grad: linear-gradient(120deg, #1a4ed8 0%, #0ea5e9 100%);
  --grad-soft: linear-gradient(135deg, #eaf1ff 0%, #e6f7ff 100%);

  /* 尺寸 */
  --wrap: 1200px;
  --radius: 18px;
  --radius-sm: 12px;
  --nav-h: 76px;

  /* 阴影 */
  --shadow-sm: 0 2px 10px rgba(12, 21, 36, .05);
  --shadow: 0 12px 34px rgba(12, 21, 36, .07);
  --shadow-lg: 0 24px 60px rgba(12, 21, 36, .12);

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. 基础重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB",
    "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  letter-spacing: .01em;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
button, input, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -.01em;
}
p { margin: 0; }

::selection { background: #cfe0ff; color: var(--brand-deep); }

/* ---------- 3. 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

.section { padding: 104px 0; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: 72px 0; }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-deep);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
}

.section-title { font-size: clamp(28px, 3.4vw, 42px); }
.section-sub { margin-top: 18px; color: var(--ink-3); font-size: 17px; }

.grid { display: grid; gap: 26px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 50px;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
    background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.btn svg { width: 17px; height: 17px; }

.btn--primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 10px 24px rgba(26, 78, 216, .26);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(26, 78, 216, .34); }

.btn--ghost {
  background: #fff;
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn--ghost:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-2px); }

.btn--light {
  background: #fff;
  color: var(--brand-deep);
}
.btn--light:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(0, 0, 0, .22); }

.btn--outline-light {
  border-color: rgba(255, 255, 255, .34);
  color: #fff;
}
.btn--outline-light:hover { border-color: #fff; background: rgba(255, 255, 255, .1); }

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

.textlink {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand);
  font-weight: 600;
  font-size: 15px;
}
.textlink svg { width: 16px; height: 16px; transition: transform .25s var(--ease); }
.textlink:hover svg { transform: translateX(4px); }

/* ---------- 5. 顶部导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
}
.nav.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px rgba(12, 21, 36, .05);
}

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

.brand { display: flex; align-items: center; gap: 11px; }
.brand__mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: var(--grad);
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .02em;
  box-shadow: 0 6px 16px rgba(26, 78, 216, .3);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__name { font-size: 17px; font-weight: 700; letter-spacing: .01em; }
.brand__en { font-size: 11px; color: var(--ink-3); letter-spacing: .12em; text-transform: uppercase; }

.nav__links { display: flex; align-items: center; gap: 34px; }
.nav__links a {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  padding: 6px 0;
  transition: color .25s var(--ease);
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
  transition: width .3s var(--ease);
}
.nav__links a:hover { color: var(--brand); }
.nav__links a:hover::after,
.nav__links a.is-active::after { width: 100%; }
.nav__links a.is-active { color: var(--brand); font-weight: 600; }

.nav__actions { display: flex; align-items: center; gap: 14px; }
.nav__actions .btn { height: 42px; padding: 0 22px; font-size: 14px; }

.burger {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  padding: 0;
  place-items: center;
}
.burger span {
  display: block;
  width: 18px;
  height: 1.8px;
  margin: 3px auto;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}
.burger.is-open span:nth-child(1) { transform: translateY(4.8px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-4.8px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  z-index: 99;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 12px 28px 24px;
  display: none;
}
.mobile-menu.is-open { display: block; animation: dropIn .28s var(--ease); }
.mobile-menu a {
  display: block;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  font-weight: 500;
}
.mobile-menu a.is-active { color: var(--brand); }
.mobile-menu .btn { margin-top: 18px; }

@keyframes dropIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 6. 首屏 Hero ---------- */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 78px) 0 96px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -220px;
  right: -160px;
  width: 720px;
  height: 720px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(26, 78, 216, .13), rgba(14, 165, 233, .07) 45%, transparent 68%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  top: 220px;
  left: -280px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle at 60% 40%, rgba(109, 94, 252, .11), transparent 66%);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 2; }

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

.hero__title {
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.18;
  letter-spacing: -.02em;
}
.hero__title em {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__desc {
  margin-top: 24px;
  max-width: 560px;
  color: var(--ink-2);
  font-size: 17.5px;
  line-height: 1.85;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }

.hero__tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.tag {
  padding: 7px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, .7);
  font-size: 13.5px;
  color: var(--ink-2);
}

/* Hero 右侧：数字员工可视化（纯 CSS） */
.orb {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 480px;
  margin-left: auto;
}
.orb__core {
  position: absolute;
  inset: 15%;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 30px 70px rgba(26, 78, 216, .3);
  display: grid;
  place-items: center;
  text-align: center;
  color: #fff;
  padding: 24px;
}
.orb__core::before {
  content: "";
  position: absolute;
  inset: -13%;
  border-radius: 50%;
  border: 1px solid rgba(26, 78, 216, .16);
}
.orb__core::after {
  content: "";
  position: absolute;
  inset: -27%;
  border-radius: 50%;
  border: 1px dashed rgba(26, 78, 216, .14);
  animation: spin 34s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.orb__core h3 { font-size: 26px; font-weight: 700; }
.orb__core p { margin-top: 8px; font-size: 13.5px; opacity: .88; line-height: 1.6; }

.orb__node {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 16px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  font-size: 13.5px;
  font-weight: 600;
  white-space: nowrap;
  animation: float 6s ease-in-out infinite;
}
.orb__node i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
  flex: none;
}
.orb__node:nth-child(2) { top: 6%; left: 2%; animation-delay: 0s; }
.orb__node:nth-child(3) { top: 25%; right: -6%; animation-delay: .8s; }
.orb__node:nth-child(4) { bottom: 24%; left: -8%; animation-delay: 1.6s; }
.orb__node:nth-child(5) { bottom: 4%; right: 4%; animation-delay: 2.4s; }
.orb__node:nth-child(3) i { background: var(--cyan); }
.orb__node:nth-child(4) i { background: var(--violet); }
.orb__node:nth-child(5) i { background: #10b981; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-11px); }
}

/* ---------- 7. 通用卡片 ---------- */
.card {
  padding: 34px 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .32s var(--ease), box-shadow .32s var(--ease), border-color .32s var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: #d7e2f5; }

.card__icon {
  width: 52px;
  height: 52px;
  border-radius: 15px;
  background: var(--grad-soft);
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  color: var(--brand);
}
.card__icon svg { width: 25px; height: 25px; }
.card h3 { font-size: 19.5px; }
.card p { margin-top: 12px; color: var(--ink-3); font-size: 15px; line-height: 1.8; }

/* ---------- 8. 数字员工角色卡 ---------- */
.role {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 34px 30px 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .32s var(--ease), box-shadow .32s var(--ease), border-color .32s var(--ease);
}
.role::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.role:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: #d7e2f5; }
.role:hover::before { transform: scaleX(1); }

.role__top { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.role__icon {
  width: 50px;
  height: 50px;
  flex: none;
  border-radius: 14px;
  background: var(--grad-soft);
  display: grid;
  place-items: center;
  color: var(--brand);
}
.role__icon svg { width: 24px; height: 24px; }
.role__name { font-size: 20px; font-weight: 700; }
.role__en { font-size: 12px; color: var(--ink-3); letter-spacing: .08em; text-transform: uppercase; }
.role__desc { color: var(--ink-2); font-size: 15px; line-height: 1.8; }

.role__list { margin-top: 20px; padding-top: 18px; border-top: 1px dashed var(--line); }
.role__list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 9px;
  font-size: 14.5px;
  color: var(--ink-2);
}
.role__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
}
.role__list li:last-child { margin-bottom: 0; }

.role--wide { grid-column: span 2; }

/* ---------- 9. 流程步骤 ---------- */
.steps { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.steps::before {
  content: "";
  position: absolute;
  top: 30px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: repeating-linear-gradient(to right, var(--line-strong) 0 6px, transparent 6px 12px);
}
.step { position: relative; }
.step__no {
  position: relative;
  z-index: 2;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--line-strong);
  display: grid;
  place-items: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--brand);
  margin-bottom: 20px;
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}
.step:hover .step__no { background: var(--grad); color: #fff; border-color: transparent; }
.step h3 { font-size: 18px; }
.step p { margin-top: 10px; color: var(--ink-3); font-size: 14.5px; line-height: 1.8; }

/* ---------- 10. 数据指标 ---------- */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.metric { background: #fff; padding: 36px 26px; text-align: center; }
.metric__num {
  font-size: 42px;
  font-weight: 800;
  letter-spacing: -.02em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.1;
}
.metric__num span { font-size: 22px; font-weight: 700; }
.metric__label { margin-top: 10px; font-size: 14.5px; color: var(--ink-3); }

.note {
  margin-top: 18px;
  font-size: 13px;
  color: #8a97a9;
  text-align: center;
}

/* ---------- 11. 深色 CTA 区 ---------- */
.cta-band {
  position: relative;
  padding: 88px 0;
  background: var(--bg-deep);
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  top: -40%;
  left: 50%;
  width: 900px;
  height: 900px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(26, 78, 216, .34), transparent 62%);
  pointer-events: none;
}
.cta-band .wrap { position: relative; z-index: 2; text-align: center; }
.cta-band h2 { color: #fff; font-size: clamp(26px, 3.2vw, 40px); }
.cta-band p { margin: 18px auto 0; max-width: 620px; color: rgba(234, 240, 251, .72); font-size: 16.5px; }
.cta-band__actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

/* ---------- 12. 页脚 ---------- */
.footer { background: var(--bg-deep); color: var(--ink-invert); padding: 72px 0 28px; }
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.footer .brand__mark { background: var(--grad); }
.footer .brand__name { color: #fff; }
.footer .brand__en { color: rgba(234, 240, 251, .5); }
.footer__intro { margin-top: 18px; max-width: 320px; font-size: 14.5px; color: rgba(234, 240, 251, .62); line-height: 1.85; }

.footer h4 { font-size: 15px; color: #fff; margin-bottom: 18px; }
.footer li { margin-bottom: 11px; }
.footer li a { font-size: 14.5px; color: rgba(234, 240, 251, .62); transition: color .25s var(--ease); }
.footer li a:hover { color: #fff; }
.footer__contact li { display: flex; gap: 10px; font-size: 14.5px; color: rgba(234, 240, 251, .62); }
.footer__contact svg { width: 16px; height: 16px; flex: none; margin-top: 5px; color: var(--cyan); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  font-size: 13.5px;
  color: rgba(234, 240, 251, .45);
}

/* ---------- 13. 页面头部（内页） ---------- */
.page-head {
  position: relative;
  padding: calc(var(--nav-h) + 74px) 0 78px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.page-head::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -120px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(26, 78, 216, .12), transparent 66%);
}
.page-head .wrap { position: relative; z-index: 2; }
.page-head h1 { font-size: clamp(30px, 3.8vw, 46px); }
.page-head p { margin-top: 18px; max-width: 640px; color: var(--ink-3); font-size: 17px; }

.crumb { display: flex; align-items: center; gap: 8px; margin-bottom: 18px; font-size: 13.5px; color: var(--ink-3); }
.crumb a:hover { color: var(--brand); }
.crumb span { opacity: .5; }

/* ---------- 14. 关于我们 · 时间轴 ---------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--brand), rgba(14, 165, 233, .18), transparent);
}
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 7px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--brand);
}
.tl-year { font-size: 14px; font-weight: 700; color: var(--brand); letter-spacing: .04em; }
.tl-item h3 { margin-top: 6px; font-size: 18px; }
.tl-item p { margin-top: 8px; color: var(--ink-3); font-size: 15px; line-height: 1.8; }

/* 价值观 */
.value {
  padding: 30px 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  height: 100%;
}
.value__no {
  font-size: 13px;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: .1em;
}
.value h3 { margin-top: 10px; font-size: 18px; }
.value p { margin-top: 10px; color: var(--ink-3); font-size: 14.5px; line-height: 1.8; }

/* 数据条 */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.stat { text-align: center; }
.stat__num { font-size: 36px; font-weight: 800; color: var(--ink); letter-spacing: -.02em; }
.stat__num span { font-size: 18px; color: var(--brand); }
.stat__label { margin-top: 6px; font-size: 14px; color: var(--ink-3); }

/* ---------- 15. 产品服务 · 详情块 ---------- */
.svc {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
  align-items: center;
  padding: 56px 0;
  border-top: 1px solid var(--line);
}
.svc:first-child { border-top: none; padding-top: 0; }
.svc--reverse .svc__visual { order: -1; }

.svc__no { font-size: 13px; font-weight: 700; color: var(--brand); letter-spacing: .14em; }
.svc h2 { margin-top: 12px; font-size: clamp(24px, 2.6vw, 32px); }
.svc__en { margin-top: 4px; font-size: 13px; color: var(--ink-3); letter-spacing: .08em; text-transform: uppercase; }
.svc__desc { margin-top: 18px; color: var(--ink-2); font-size: 16px; line-height: 1.85; }

.svc__points { margin-top: 24px; display: grid; gap: 12px; }
.svc__points li {
  display: flex;
  gap: 11px;
  font-size: 15px;
  color: var(--ink-2);
}
.svc__points svg { width: 19px; height: 19px; flex: none; margin-top: 4px; color: var(--brand); }

.svc__tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
.svc__tags span {
  padding: 6px 13px;
  border-radius: 8px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-2);
}

/* 服务详情可视化面板 */
.svc__visual {
  position: relative;
  padding: 26px;
  border-radius: var(--radius);
  background: var(--grad-soft);
  border: 1px solid var(--line);
}
.panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}
.panel + .panel { margin-top: 12px; }
.panel__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.panel__title { font-size: 14.5px; font-weight: 600; }
.pill {
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  background: var(--brand-soft);
  color: var(--brand-deep);
}
.pill--ok { background: #e6f7ef; color: #067a4a; }
.pill--run { background: #fff4e0; color: #a15c00; }
.panel__meta { margin-top: 8px; font-size: 13px; color: var(--ink-3); line-height: 1.7; }

.bar { height: 6px; border-radius: 999px; background: var(--line); margin-top: 12px; overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: 999px; background: var(--grad); }

/* 技术能力 */
.tech { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tech-item {
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
}
.tech-item h3 { font-size: 16.5px; }
.tech-item p { margin-top: 8px; font-size: 14px; color: var(--ink-3); line-height: 1.8; }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 16.5px;
  font-weight: 600;
}
.faq-q:hover { color: var(--brand); }
.faq-q i {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
}
.faq-q i::before,
.faq-q i::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
  transform: translateY(-50%);
  transition: transform .3s var(--ease);
}
.faq-q i::after { transform: translateY(-50%) rotate(90deg); }
.faq-item.is-open .faq-q i::after { transform: translateY(-50%) rotate(0deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .38s var(--ease);
}
.faq-a p { padding-bottom: 22px; color: var(--ink-3); font-size: 15px; line-height: 1.9; max-width: 860px; }

/* ---------- 16. 联系我们 · 表单 ---------- */
.contact-layout { display: grid; grid-template-columns: 1.08fr .92fr; gap: 56px; align-items: start; }

.form-card {
  padding: 40px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 20px; }
.field label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 600;
}
.field label em { color: #d92d20; font-style: normal; }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 11px;
  background: #fff;
  font-size: 15px;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.field textarea { min-height: 120px; resize: vertical; line-height: 1.7; }
.field input::placeholder,
.field textarea::placeholder { color: #a6b1c2; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(26, 78, 216, .1);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea { border-color: #d92d20; }
.field .err { display: none; margin-top: 7px; font-size: 13px; color: #d92d20; }
.field.has-error .err { display: block; }

.checkline { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 22px; }
.checkline input { margin-top: 5px; width: 16px; height: 16px; accent-color: var(--brand); }
.checkline label { font-size: 13.5px; color: var(--ink-3); line-height: 1.7; }

.form-ok {
  display: none;
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  background: #e6f7ef;
  border: 1px solid #b7e6cd;
  color: #067a4a;
  font-size: 15px;
}
.form-ok.is-show { display: block; animation: dropIn .3s var(--ease); }
.form-ok--warn {
  background: #fff7e6;
  border-color: #ffd591;
  color: #a15c00;
}

.info-card {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  gap: 16px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.info-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.info-card__icon {
  width: 46px;
  height: 46px;
  flex: none;
  border-radius: 13px;
  background: var(--grad-soft);
  display: grid;
  place-items: center;
  color: var(--brand);
}
.info-card__icon svg { width: 21px; height: 21px; }
.info-card h3 { font-size: 16px; }
.info-card p { margin-top: 6px; font-size: 14.5px; color: var(--ink-2); }
.info-card small { display: block; margin-top: 4px; font-size: 13px; color: var(--ink-3); }

.mapbox {
  margin-top: 26px;
  height: 220px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    linear-gradient(rgba(255, 255, 255, .85), rgba(255, 255, 255, .85)),
    repeating-linear-gradient(0deg, #e9eff8 0 1px, transparent 1px 26px),
    repeating-linear-gradient(90deg, #e9eff8 0 1px, transparent 1px 26px),
    var(--grad-soft);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 20px;
}
.mapbox svg { width: 30px; height: 30px; color: var(--brand); margin: 0 auto 10px; }
.mapbox strong { display: block; font-size: 15.5px; }
.mapbox span { display: block; margin-top: 4px; font-size: 13.5px; color: var(--ink-3); }

/* ---------- 17. 行业标签 ---------- */
.industries { display: flex; flex-wrap: wrap; gap: 12px; }
.industry {
  padding: 12px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  font-size: 14.5px;
  font-weight: 500;
  transition: all .28s var(--ease);
}
.industry:hover {
  border-color: var(--brand);
  color: var(--brand);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

/* ---------- 18. 滚动揭示动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 19. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .hero__grid { gap: 40px; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 34px 26px; }
  .steps::before { display: none; }
}

@media (max-width: 900px) {
  .nav__links, .nav__actions { display: none; }
  .burger { display: grid; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero { padding: calc(var(--nav-h) + 46px) 0 72px; }
  .orb { margin: 10px auto 0; max-width: 400px; }
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--2 { grid-template-columns: 1fr; }
  .role--wide { grid-column: auto; }
  .svc { grid-template-columns: 1fr; gap: 32px; padding: 44px 0; }
  .svc--reverse .svc__visual { order: 0; }
  .contact-layout { grid-template-columns: 1fr; gap: 40px; }
  .tech { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .section { padding: 76px 0; }
  .page-head { padding: calc(var(--nav-h) + 48px) 0 56px; }
}

@media (max-width: 620px) {
  .wrap { padding: 0 20px; }
  .grid--3, .grid--4, .grid--2 { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: 1fr; }
  .steps, .tech, .stats-row { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .form-card { padding: 26px 20px; }
  .card, .role { padding: 26px 22px; }
  .hero__actions .btn { flex: 1; }
  .footer__grid { grid-template-columns: 1fr; }
  .orb__node { font-size: 12px; padding: 8px 12px; }
  .cta-band { padding: 64px 0; }
  .metric__num { font-size: 36px; }
}