/* ==========================================================================
   合肥喆思电子科技有限公司 — 企业官网样式表 v2
   设计语言：参考 Basler 官网 —— 白色为主的极简工业风
     · 主背景白，区块用极浅的冷蓝灰
     · 文字深海军蓝，唯一强调色为中等明度的蓝（偏青，不是纯蓝）
     · 细线边框、大量留白、克制的渐变
   零外部依赖（无 CDN / 无外链字体），可离线打开
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 品牌蓝：偏青的中等蓝（参考 Basler 官网强调色方向，非纯蓝） */
  --brand:        #0a6cb0;
  --brand-600:    #095c96;
  --brand-700:    #074c7c;
  --brand-tint:   #e9f2fa;
  --brand-tint-2: #d8e7f5;
  --teal:         #0e93ad;   /* 辅助青，用于渐变尾端与少量点缀 */

  /* 中性色（冷调） */
  --ink:          #0e2238;   /* 标题 */
  --ink-2:        #1a3550;
  --text:         #35506b;   /* 正文 */
  --text-soft:    #5f7491;   /* 次要文字 */
  --line:         #dfe8f2;   /* 边框 */
  --bg:           #ffffff;
  --bg-tint:      #f5f9fc;   /* 浅冷蓝灰区块 */
  --bg-tint-2:    #eef4fa;
  --dark:         #0b1c30;   /* 深海军蓝（页脚/深区块） */
  --dark-2:       #10263e;

  /* 尺寸 */
  --container: 1200px;
  --radius: 12px;
  --radius-lg: 18px;
  --gap: 24px;

  /* 阴影 */
  --shadow-sm: 0 2px 10px rgba(14, 34, 56, .06);
  --shadow:    0 10px 30px rgba(14, 34, 56, .09);
  --shadow-lg: 0 24px 60px rgba(14, 34, 56, .14);
  --shadow-brand: 0 14px 32px rgba(10, 108, 176, .26);

  --ease: cubic-bezier(.22, .68, .24, 1);
  --header-h: 122px;
}

/* ---------- 2. 复位与基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.nav-open { overflow: hidden; }

h1, h2, h3, h4 { margin: 0; color: var(--ink); line-height: 1.3; 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; transition: color .2s var(--ease); }
a:hover { color: var(--brand-600); }

button { font: inherit; cursor: pointer; }

::selection { background: rgba(10, 108, 176, .16); }

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

/* ---------- 3. 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.section { padding: 92px 0; }
.section--tint { background: var(--bg-tint); }
.section--dark { background: var(--dark); color: #9db2c9; }
.section--dark .section__title { color: #fff; }
.section--tight { padding: 64px 0; }

.section__head { max-width: 760px; margin-bottom: 48px; }
.section__head--center { margin-inline: auto; text-align: center; }
.section__head--row {
  max-width: none;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.section__title {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  margin-bottom: 14px;
}
.section__sub { color: var(--text-soft); font-size: 15.5px; }
.section--dark .section__sub { color: #8ea3bd; }

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  padding: 5px 14px;
  border-radius: 100px;
  background: var(--brand-tint);
  color: var(--brand);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.eyebrow--light { background: rgba(14, 147, 173, .14); color: #7fd6e8; }

.grid { display: grid; gap: var(--gap); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .22s var(--ease), box-shadow .22s var(--ease),
              background-color .22s var(--ease), color .22s var(--ease),
              border-color .22s var(--ease);
}
.btn svg { width: 17px; height: 17px; fill: currentColor; flex: none; }

.btn--sm { padding: 10px 18px; font-size: 14px; }
.btn--lg { padding: 16px 30px; font-size: 16px; }
.btn--block { width: 100%; }

.btn--primary { background: var(--brand); color: #fff; box-shadow: var(--shadow-brand); }
.btn--primary:hover { background: var(--brand-600); color: #fff; transform: translateY(-2px); }

.btn--ghost {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .38);
  color: #fff;
  backdrop-filter: blur(6px);
}
.btn--ghost:hover { background: rgba(255, 255, 255, .2); color: #fff; transform: translateY(-2px); }

.btn--outline { border-color: var(--line); background: #fff; color: var(--ink-2); box-shadow: var(--shadow-sm); }
.btn--outline:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-2px); }

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

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 700;
  font-size: 15px;
  padding-bottom: 4px;
}
.link-more svg { width: 16px; height: 16px; fill: currentColor; transition: transform .22s var(--ease); }
.link-more:hover svg { transform: translateX(4px); }

/* ---------- 5. 演示提示条 ---------- */
.demo-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 9px 24px;
  background: #fff7e6;
  border-bottom: 1px solid #ffe0a3;
  color: #8a5a00;
  font-size: 13.5px;
  line-height: 1.5;
}
.demo-bar__text { flex: 1; }
.demo-bar code {
  padding: 1px 6px;
  background: #fff;
  border: 1px solid #ffe0a3;
  border-radius: 4px;
  font-size: 12.5px;
}
.demo-bar__close {
  flex: none;
  width: 26px; height: 26px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: #8a5a00;
  font-size: 20px;
  line-height: 1;
}
.demo-bar__close:hover { background: rgba(138, 90, 0, .1); }
.demo-bar.is-hidden { display: none; }

/* ---------- 6. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(180%) blur(14px);
  transition: box-shadow .3s var(--ease);
}
.site-header.is-stuck { box-shadow: 0 6px 24px rgba(14, 34, 56, .09); }

.topbar {
  background: var(--dark);
  color: #93a9c2;
  font-size: 13px;
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 40px;
}
.topbar__slogan { letter-spacing: .04em; }
.topbar__list { display: flex; align-items: center; gap: 26px; }
.topbar__list li { display: flex; align-items: center; gap: 8px; }
.topbar__list svg { width: 14px; height: 14px; fill: #4aa8d6; flex: none; }
.topbar__list a { color: #dce7f4; font-weight: 600; }
.topbar__list a:hover { color: #7fd6e8; }
.topbar__lang {
  display: inline-block;
  padding: 2px 10px;
  border: 1px solid rgba(220, 231, 244, .35);
  border-radius: 100px;
  font-size: 12px;
  letter-spacing: .06em;
  line-height: 1.6;
}
.topbar__lang:hover { border-color: #7fd6e8; }

.nav__inner {
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: 76px;
}

.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand__mark { width: 42px; height: 42px; flex: none; }
.brand__mark img { width: 100%; height: 100%; }
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__text strong { color: var(--ink); font-size: 19px; font-weight: 800; letter-spacing: .02em; }
.brand__text small {
  color: var(--text-soft);
  font-size: 10.5px;
  letter-spacing: .16em;
  font-weight: 600;
}
.brand--light .brand__text strong { color: #fff; }
.brand--light .brand__text small { color: #7f93ad; }
a.brand:hover .brand__text strong { color: var(--brand); }
a.brand--light:hover .brand__text strong { color: #7fd6e8; }

.nav__menu {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav__link {
  position: relative;
  display: block;
  padding: 10px 15px;
  border-radius: 8px;
  color: var(--ink-2);
  font-size: 15px;
  font-weight: 600;
  transition: color .2s var(--ease), background-color .2s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 15px; right: 15px; bottom: 5px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .28s var(--ease);
}
.nav__link:hover { color: var(--brand); background: var(--brand-tint); }
.nav__link.is-active { color: var(--brand); }
.nav__link.is-active::after { transform: scaleX(1); }

.nav__toggle {
  display: none;
  width: 44px; height: 44px;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 0;
  position: relative;
}
.nav__toggle span {
  position: absolute;
  left: 50%;
  width: 19px; height: 2px;
  margin-left: -9.5px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}
.nav__toggle span:nth-child(1) { top: 15px; }
.nav__toggle span:nth-child(2) { top: 21px; }
.nav__toggle span:nth-child(3) { top: 27px; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 7. 页头横幅（内页统一） ---------- */
.page-hero {
  background:
    radial-gradient(900px 340px at 85% -20%, rgba(14, 147, 173, .10), transparent 60%),
    linear-gradient(180deg, var(--bg-tint) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
  padding: 56px 0 52px;
}
.page-hero__title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin-bottom: 12px; }
.page-hero__desc { max-width: 720px; color: var(--text-soft); font-size: 16px; }
.crumbs { display: flex; gap: 8px; align-items: center; margin-bottom: 18px; font-size: 13px; color: var(--text-soft); }
.crumbs a { color: var(--text-soft); }
.crumbs a:hover { color: var(--brand); }
.crumbs svg { width: 12px; height: 12px; fill: #a8b8cc; }

/* ---------- 8. 首页首屏（浅色工业风） ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1000px 480px at 80% -10%, rgba(10, 108, 176, .09), transparent 62%),
    linear-gradient(180deg, #f7fafd 0%, #ffffff 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(10, 108, 176, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 108, 176, .05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 75% at 70% 20%, #000 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 90% 75% at 70% 20%, #000 20%, transparent 80%);
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  align-items: center;
  gap: 56px;
  padding: 76px 0 64px;
}

.hero__title {
  margin: 6px 0 20px;
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.02em;
}
.hero__title .hl { color: var(--brand); white-space: nowrap; }
/* 英文标题：允许换行 + 稍小字号，避免溢出与右侧系统卡重叠 */
html[lang="en"] .hero__title { font-size: clamp(26px, 3.3vw, 40px); }
html[lang="en"] .hero__title .hl { white-space: normal; }
.hero__desc { max-width: 560px; color: var(--text-soft); font-size: 16.5px; }

.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 32px 0 34px; }

.hero__caps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--text-soft);
  font-size: 14px;
}
.hero__caps li { position: relative; padding-left: 16px; }
.hero__caps li::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 7px; height: 7px;
  margin-top: -3.5px;
  background: var(--brand);
  transform: rotate(45deg);
}

/* 首屏右侧：几何系统图 */
.hero__visual { display: grid; place-items: center; margin-top: 22px; }
.system-card {
  position: relative;
  width: min(100%, 440px);
  padding: 40px 34px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.system-card::after {
  content: "";
  position: absolute;
  right: -7px; top: 34px;
  width: 14px; height: 14px;
  background: var(--brand);
  transform: rotate(45deg);
}
.system-card__logo { width: 128px; height: 128px; margin: 0 auto 26px; }
.system-card__logo img { width: 100%; height: 100%; }
.system-node {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 15px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--ink-2);
}
.system-node i {
  width: 9px; height: 9px;
  flex: none;
  background: var(--teal);
  transform: rotate(45deg);
}
.system-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 14px;
}
.system-card__tag {
  position: absolute;
  right: 22px; top: 22px;
  padding: 3px 12px;
  border-radius: 100px;
  background: var(--brand-tint);
  color: var(--brand);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .08em;
}
.system-card__tag::before { content: "● "; font-size: 8px; vertical-align: 1px; }

/* ---------- 9. 服务能力条 ---------- */
.caps-band { background: var(--dark); }
.caps-band__inner {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  padding-block: 34px;
}
.cap { text-align: center; padding: 4px 14px; border-right: 1px solid rgba(255, 255, 255, .12); }
.cap:last-child { border-right: 0; }
.cap strong { display: block; color: #fff; font-size: clamp(19px, 2.2vw, 24px); font-weight: 800; letter-spacing: -.01em; }
.cap span { color: #8ea3bd; font-size: 13px; }

/* ---------- 10. 卡片通用 ---------- */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease),
              border-color .3s var(--ease);
}

/* 产品 / 服务卡 */
.service { padding: 30px 26px 26px; display: flex; flex-direction: column; }
.service:hover { transform: translateY(-6px); border-color: rgba(10, 108, 176, .35); box-shadow: var(--shadow-lg); }
.service__icon {
  display: grid;
  place-items: center;
  width: 52px; height: 52px;
  margin-bottom: 20px;
  border-radius: 12px;
  background: var(--brand-tint);
  transition: transform .3s var(--ease);
}
.service:hover .service__icon { transform: scale(1.06) rotate(-4deg); }
.service__icon svg { width: 25px; height: 25px; fill: var(--brand); }
.service h3 { font-size: 18.5px; font-weight: 700; margin-bottom: 10px; }
.service p { color: var(--text-soft); font-size: 14.5px; flex: 1; }
.service__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
}
.service__tags li {
  padding: 3px 11px;
  border-radius: 100px;
  background: var(--bg-tint);
  color: var(--brand);
  font-size: 12px;
  font-weight: 600;
}

/* ---------- 11. 核心优势 ---------- */
.advantage-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap); }
.advantage-item { padding: 26px 22px; }
.advantage-item .advantage__num {
  display: block;
  margin-bottom: 12px;
  color: transparent;
  -webkit-text-stroke: 1.4px rgba(10, 108, 176, .38);
  font-size: 34px;
  font-weight: 800;
  line-height: 1;
}
.advantage-item h3 { font-size: 16.5px; margin-bottom: 8px; }
.advantage-item p { color: var(--text-soft); font-size: 13.8px; }

/* ---------- 12. 合作流程 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}
.steps li {
  position: relative;
  padding: 26px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.steps li:hover { transform: translateY(-6px); border-color: rgba(10, 108, 176, .4); box-shadow: var(--shadow); }
.steps__no { display: block; margin-bottom: 10px; color: var(--brand); font-size: 13px; font-weight: 800; letter-spacing: .16em; }
.steps h3 { font-size: 16.5px; margin-bottom: 8px; }
.steps p { color: var(--text-soft); font-size: 13.5px; line-height: 1.65; }

/* ---------- 13. 公司动态 ---------- */
.news { overflow: hidden; display: flex; flex-direction: column; }
.news:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.news__thumb {
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--brand-tint), var(--bg-tint-2));
  color: var(--text-soft);
  font-size: 13px;
  letter-spacing: .06em;
}
.news__thumb svg { width: 34px; height: 34px; fill: #b9cce0; margin-bottom: 8px; }
.news__body { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.news time { display: block; margin-bottom: 9px; color: var(--brand); font-size: 12.5px; font-weight: 700; letter-spacing: .05em; }
.news h3 { font-size: 17px; margin-bottom: 9px; transition: color .2s var(--ease); }
.news:hover h3 { color: var(--brand); }
.news p { color: var(--text-soft); font-size: 14px; }

/* 空状态 */
.empty-state {
  padding: 56px 30px;
  text-align: center;
  border: 1px dashed #c3d4e6;
  border-radius: var(--radius-lg);
  background: var(--bg-tint);
}
.empty-state__icon {
  display: grid;
  place-items: center;
  width: 64px; height: 64px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--line);
}
.empty-state__icon svg { width: 30px; height: 30px; fill: #a9c2da; }
.empty-state h3 { font-size: 18px; margin-bottom: 8px; }
.empty-state p { color: var(--text-soft); font-size: 14px; max-width: 460px; margin-inline: auto; }

/* ---------- 14. 关于我们 ---------- */
.about { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 64px; align-items: stretch; }

/* 左侧：公司照片（完整显示，不裁剪） */
.about__photo {
  align-self: center;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  background: #fff;
}
.about__photo img {
  display: block;
  width: 100%;
  height: auto;
}

.about__text p { margin-bottom: 16px; }
.about__text .btn { margin-top: 10px; }

.about__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 26px 0;
}
.about__facts div {
  padding: 16px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  text-align: center;
}
.about__facts strong { display: block; color: var(--brand); font-size: 19px; font-weight: 800; }
.about__facts span { color: var(--text-soft); font-size: 12.5px; }

/* 企业文化：三观 ↔ 标志三要素 */
.culture-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap); }
.culture-item { padding: 28px 24px; text-align: center; }
.culture-item__mark {
  display: grid;
  place-items: center;
  width: 64px; height: 64px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: var(--brand-tint);
}
.culture-item__mark svg { width: 30px; height: 30px; fill: var(--brand); }
.culture-item h3 { font-size: 18px; margin-bottom: 4px; }
.culture-item .culture-item__en {
  color: var(--text-soft);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 10px;
}
.culture-item p { color: var(--text-soft); font-size: 13.8px; }

/* 发展历程 */
.timeline { position: relative; max-width: 760px; margin-inline: auto; padding-left: 30px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 8px; top: 6px; bottom: 6px;
  width: 2px;
  background: var(--line);
}
.timeline li { position: relative; padding: 0 0 30px 26px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -28px; top: 7px;
  width: 14px; height: 14px;
  border-radius: 4px;
  background: #fff;
  border: 3px solid var(--brand);
  transform: rotate(45deg);
}
.timeline time { display: block; color: var(--brand); font-size: 13px; font-weight: 800; letter-spacing: .06em; margin-bottom: 4px; }
.timeline h3 { font-size: 16.5px; margin-bottom: 4px; }
.timeline p { color: var(--text-soft); font-size: 14px; }

/* ---------- 15. 产品页服务区块（编辑式布局） ---------- */
.svc-wrap { padding-top: 40px; }

.svc-nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.svc-nav a {
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: #fff;
  color: var(--ink-2);
  font-size: 13.5px;
  font-weight: 700;
  transition: border-color .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}
.svc-nav a:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-1px); }
.svc-nav a i { font-style: normal; color: var(--brand); margin-right: 7px; }

.svc-section { padding: 78px 0; }
.svc-section--tint { background: var(--bg-tint); }

/* 服务头：大编号 + 标题 */
.svc-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 36px;
  align-items: start;
  margin-bottom: 20px;
}
.svc-head__no {
  font-size: 72px;
  font-weight: 800;
  line-height: .95;
  color: transparent;
  -webkit-text-stroke: 1.6px rgba(10, 108, 176, .45);
  letter-spacing: -.02em;
}
.svc-head__en {
  display: block;
  color: var(--text-soft);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.svc-head h2 { font-size: clamp(24px, 3vw, 32px); margin-bottom: 12px; }
.svc-head p { color: var(--text-soft); font-size: 15.5px; max-width: 720px; }

/* 案例块：图文左右交替，细线分隔 */
.case-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
  padding: 40px 0;
  border-top: 1px solid var(--line);
}
.case-block--flip .case-block__media { order: -1; }
.case-block--text { display: block; max-width: 900px; }

.case-block__no {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 12px;
  border-radius: 100px;
  background: var(--brand-tint);
  color: var(--brand);
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: .12em;
}
.case-block__text h3 { font-size: 20px; margin-bottom: 10px; }
.case-block__text p { color: var(--text); font-size: 15px; line-height: 1.9; }

.case-block__media { display: grid; gap: 14px; }
.case-block__media--dual { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
.case-fig { margin: 0; }
.case-fig img {
  display: block;
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: #fff;
  cursor: zoom-in;
}
.case-fig figcaption {
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-soft);
  text-align: center;
}

/* 图片灯箱（点击放大） */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(7, 17, 30, .92);
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  transition: opacity .2s ease;
  cursor: zoom-out;
}
.lightbox.is-open { opacity: 1; }
.lightbox figure { margin: 0; text-align: center; }
.lightbox img {
  max-width: 92vw;
  max-height: 84vh;
  width: auto;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 24px 80px rgba(0, 0, 0, .55);
}
.lightbox figcaption {
  margin-top: 12px;
  color: #cfe0f0;
  font-size: 13px;
}
body.no-scroll { overflow: hidden; }

/* ---------- 16. 联系我们 ---------- */
/* 蜜罐字段：移出视口隐藏，正常用户无感知 */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px; height: 1px;
  opacity: 0;
}
.contact { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 40px; align-items: start; }
/* 无表单版：联系方式居中单列 */
.contact--solo { grid-template-columns: 1fr; max-width: 760px; margin-inline: auto; }

.contact__info { display: grid; gap: 14px; }
.contact__info > li {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 20px 22px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.contact__icon {
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  flex: none;
  border-radius: 12px;
  background: var(--brand-tint);
}
.contact__icon svg { width: 20px; height: 20px; fill: var(--brand); }
.contact__info small { display: block; color: var(--text-soft); font-size: 12.5px; margin-bottom: 2px; }
.contact__info strong { color: var(--ink); font-size: 15.5px; font-weight: 700; word-break: break-all; }
.contact__info strong a { color: var(--ink); }
.contact__info strong a:hover { color: var(--brand); }
.contact__map { padding: 0 !important; background: none !important; border: 0 !important; box-shadow: none !important; }
.map-placeholder {
  padding: 22px;
  border-radius: var(--radius);
  background:
    repeating-linear-gradient(45deg, var(--bg-tint) 0 14px, var(--bg-tint-2) 14px 28px);
  border: 1px dashed #bccddf;
  color: var(--text-soft);
}
.map-placeholder p { font-weight: 700; color: var(--ink-2); font-size: 14px; margin-bottom: 4px; }
.map-placeholder small { display: block; font-size: 12px; margin-bottom: 12px; }
.map-links { display: flex; gap: 10px; flex-wrap: wrap; }
.map-links a {
  padding: 6px 14px;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  font-size: 12.5px;
  font-weight: 600;
}
.map-links a:hover { border-color: var(--brand); color: var(--brand); }

.contact__form {
  padding: 34px 34px 28px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.field { margin-bottom: 18px; }
.field label { display: block; margin-bottom: 7px; color: var(--ink-2); font-size: 14px; font-weight: 600; }
.field label i { color: #d14343; font-style: normal; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #fbfcfe;
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), background-color .2s var(--ease);
}
.field textarea { resize: vertical; min-height: 118px; }
.field input::placeholder, .field textarea::placeholder { color: #a8b8cc; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(10, 108, 176, .12);
}
.field.has-error input, .field.has-error textarea { border-color: #d14343; background: #fff8f8; }
.field.has-error input:focus, .field.has-error textarea:focus { box-shadow: 0 0 0 4px rgba(209, 67, 67, .12); }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-note { margin-top: 14px; font-size: 14px; font-weight: 600; min-height: 1px; }
.form-note.is-ok { color: #1d8a54; }
.form-note.is-err { color: #d14343; }
.form-tip { margin-top: 12px; color: var(--text-soft); font-size: 12.5px; line-height: 1.65; }

/* ---------- 17. 底部行动条 ---------- */
.cta-band {
  background:
    radial-gradient(700px 300px at 12% 0%, rgba(14, 147, 173, .25), transparent 60%),
    linear-gradient(120deg, var(--brand-700), var(--brand) 55%, #0d7cba);
  color: #e4eefb;
}
.cta-band__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  padding-block: 54px;
}
.cta-band h2 { color: #fff; font-size: clamp(22px, 2.7vw, 30px); margin-bottom: 8px; }
.cta-band p { color: rgba(228, 238, 251, .85); }
.cta-band__actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 18. 页脚 ---------- */
.site-footer { background: var(--dark); color: #8ea3bd; font-size: 14px; }
.footer__main {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1.3fr);
  gap: 48px;
  padding-block: 58px 44px;
}
.footer__brand p { margin-top: 18px; max-width: 380px; line-height: 1.8; }
.footer__brand .brand__mark { width: 46px; height: 46px; }
.footer__nav h4, .footer__contact h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
.footer__nav ul { display: grid; gap: 10px; }
.footer__nav a { color: #8ea3bd; }
.footer__nav a:hover { color: #7fd6e8; }
.footer__contact ul { display: grid; gap: 10px; }
.footer__contact li { line-height: 1.65; }
.footer__contact a { color: #8ea3bd; }
.footer__contact a:hover { color: #7fd6e8; }
.footer__bottom { border-top: 1px solid rgba(255, 255, 255, .09); }
.footer__bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  padding-block: 20px;
  font-size: 13px;
}
.footer__meta { display: flex; gap: 10px; flex-wrap: wrap; }
.footer__meta a { color: #8ea3bd; }
.footer__meta a:hover { color: #7fd6e8; }
.footer__meta .sep { color: rgba(255, 255, 255, .22); }

/* ---------- 19. 回到顶部 ---------- */
.to-top {
  position: fixed;
  right: 24px; bottom: 24px;
  z-index: 80;
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border: 0;
  border-radius: 12px;
  background: var(--brand);
  color: #fff;
  box-shadow: var(--shadow-brand);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity .28s var(--ease), transform .28s var(--ease),
              visibility .28s var(--ease), background-color .2s var(--ease);
}
.to-top svg { width: 20px; height: 20px; fill: currentColor; }
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--brand-600); }

/* ---------- 20. 滚动出现动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

.grid .reveal:nth-child(2), .steps .reveal:nth-child(2),
.advantage-grid .reveal:nth-child(2), .culture-grid .reveal:nth-child(2) { transition-delay: .07s; }
.grid .reveal:nth-child(3), .steps .reveal:nth-child(3),
.advantage-grid .reveal:nth-child(3), .culture-grid .reveal:nth-child(3) { transition-delay: .14s; }
.grid .reveal:nth-child(4), .steps .reveal:nth-child(4),
.advantage-grid .reveal:nth-child(4) { transition-delay: .21s; }
.steps .reveal:nth-child(5) { transition-delay: .28s; }

/* ---------- 21. 响应式 ---------- */
@media (max-width: 1100px) {
  .grid--4, .advantage-grid, .culture-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer__main { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; }
  .footer__contact { grid-column: 1 / -1; }
}

@media (max-width: 980px) {
  :root { --header-h: 76px; }
  .topbar { display: none; }
  .nav__toggle { display: block; }
  .nav__cta { display: none; }

  .nav__menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    max-height: calc(100vh - 96px);
    overflow-y: auto;
    padding: 14px 24px 28px;
    background: #fff;
    border-top: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(14, 34, 56, .14);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .26s var(--ease), transform .26s var(--ease), visibility .26s var(--ease);
  }
  .nav__menu.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav__link { padding: 14px 12px; border-radius: 10px; font-size: 16px; border-bottom: 1px solid var(--line); }
  .nav__link::after { display: none; }
  .nav__menu li:last-child .nav__link { border-bottom: 0; }

  .hero__inner { grid-template-columns: 1fr; gap: 44px; padding: 56px 0 56px; }
  .system-card { width: min(100%, 400px); }

  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about { grid-template-columns: 1fr; gap: 44px; }
  .contact { grid-template-columns: 1fr; }
  .case-block { grid-template-columns: 1fr; gap: 26px; }
  .case-block--flip .case-block__media { order: 0; }
}

@media (max-width: 720px) {
  body { font-size: 15.5px; }
  .container { padding-inline: 18px; }
  .section { padding: 64px 0; }
  .section__head { margin-bottom: 34px; }
  .caps-band__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 12px; }
  .cap { border-right: 0; }

  .grid--3, .grid--4, .advantage-grid, .culture-grid { grid-template-columns: 1fr; }
  .svc-head { gap: 22px; }
  .svc-head__no { font-size: 54px; }
  .case-block__media--dual { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .system-row { grid-template-columns: 1fr; }
  .service { padding: 26px 22px; }
  .contact__form { padding: 26px 20px 22px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .about__facts { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }

  .cta-band__inner { padding-block: 40px; }
  .cta-band__actions { width: 100%; }
  .cta-band__actions .btn { flex: 1; }

  .footer__main { grid-template-columns: 1fr; gap: 34px; padding-block: 44px 34px; }
  .footer__bottom-inner { justify-content: center; text-align: center; }

  .hero__title { font-size: clamp(26px, 7.4vw, 34px); }
  .hero__actions .btn { width: 100%; }

  .to-top { right: 16px; bottom: 16px; }
  .demo-bar { font-size: 12.5px; padding: 8px 16px; }
}

/* ---------- 22. 打印 & 无障碍偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .demo-bar, .site-header, .to-top, .cta-band, .nav__toggle { display: none !important; }
  body { color: #000; }
  .section { padding: 20px 0; }
  .reveal { opacity: 1; transform: none; }
}