/* ============================================================
   盈客通 · 企业官网
   品牌色：#0A1B3D 深蓝 / #0052FF 科技蓝 / #00D4FF 青蓝
           #64748B 中性灰蓝 / #E6ECF2 背景浅灰
   ============================================================ */

:root {
  --navy: #0A1B3D;
  --navy-2: #122a55;
  --blue: #0052FF;
  --cyan: #00D4FF;
  --gray: #64748B;
  --bg: #E6ECF2;
  --white: #ffffff;
  --text: #1d2b45;
  --text-soft: #5a6b85;
  --line: #d8e1ec;
  --radius: 8px;
  --shadow: 0 10px 30px rgba(10, 27, 61, .08);
  --shadow-lg: 0 18px 50px rgba(10, 27, 61, .16);
  --header-h: 72px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; touch-action: manipulation; }
a, select { touch-action: manipulation; }

section[id], footer { scroll-margin-top: 84px; }

.container { width: min(1180px, 100% - 48px); margin-inline: auto; }

.icon { width: 18px; height: 18px; flex: none; }
.icon-lg { width: 30px; height: 30px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: var(--radius);
  font-size: 15px; font-weight: 600; letter-spacing: .02em;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(120deg, var(--blue), #2f78ff);
  box-shadow: 0 8px 22px rgba(0, 82, 255, .32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0, 82, 255, .42); }
.btn-ghost {
  color: #fff; border: 1px solid rgba(255, 255, 255, .45);
  background: rgba(255, 255, 255, .08); backdrop-filter: blur(6px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .18); transform: translateY(-2px); }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 100;
  height: var(--header-h);
  /* 注意：此处不能用 backdrop-filter/transform，否则它会成为内部
     fixed 定位移动菜单的包含块，导致全屏菜单只覆盖导航条高度 */
  background: rgba(255, 255, 255, .97);
  box-shadow: 0 2px 16px rgba(10, 27, 61, .08);
}
.header-inner { display: flex; align-items: center; gap: 36px; height: var(--header-h); }
.brand { display: block; }
.brand-logo { height: 40px; width: auto; display: block; }

.main-nav { display: flex; gap: 30px; margin-left: auto; }
.main-nav a {
  position: relative; font-size: 15px; font-weight: 500;
  color: var(--text); padding: 6px 2px; transition: color .25s;
}
.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; border-radius: 2px;
  background: var(--blue); transition: width .3s var(--ease);
}
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }

.header-cta { flex: none; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--navy); border-radius: 2px; transition: .3s; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  background: var(--navy); color: #fff; overflow: hidden;
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(10, 27, 61, .92) 8%, rgba(10, 27, 61, .55) 45%, rgba(10, 27, 61, .18) 78%);
}
.hero-content { position: relative; z-index: 2; padding-top: calc(var(--header-h) + 40px); padding-bottom: 140px; }
.hero-eyebrow {
  font-size: 13px; letter-spacing: .32em; color: var(--cyan);
  font-weight: 600; margin-bottom: 18px;
}
.hero-title {
  font-size: 72px; line-height: 1.12; font-weight: 800; letter-spacing: .06em;
  background: linear-gradient(100deg, #fff 30%, #a8dcff 75%, var(--cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: 19px; font-weight: 500; color: rgba(255, 255, 255, .85); margin-top: 12px; letter-spacing: .14em; }
.hero-desc { margin-top: 26px; font-size: 17px; color: rgba(255, 255, 255, .72); line-height: 1.9; }
.hero-actions { display: flex; gap: 16px; margin-top: 40px; flex-wrap: wrap; }

.hero-stats {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 2;
  border-top: 1px solid rgba(255, 255, 255, .14);
  background: rgba(10, 27, 61, .35);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.hero-stats-inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 22px 10px; text-align: center; }
.stat + .stat { border-left: 1px solid rgba(255, 255, 255, .1); }
.stat-num {
  display: block; font-size: 34px; font-weight: 800; color: #fff; line-height: 1.2;
}
.stat-num::after { content: ""; }
.stat-label { font-size: 13px; color: rgba(255, 255, 255, .62); }

/* ---------- 通用区块 ---------- */
.section { padding: 104px 0; }
.section-alt { background: var(--bg); }
.section-dark { background: var(--navy); color: #fff; }

.section-head { max-width: 640px; margin-bottom: 56px; }
.section-eyebrow { font-size: 13px; letter-spacing: .3em; font-weight: 700; color: var(--blue); margin-bottom: 12px; }
.section-dark .section-eyebrow { color: var(--cyan); }
.section-title { font-size: 38px; font-weight: 800; letter-spacing: .02em; line-height: 1.3; }
.section-desc { margin-top: 14px; font-size: 16px; color: var(--text-soft); }
.section-dark .section-desc { color: rgba(255, 255, 255, .66); }

/* ---------- 业务卡片 ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.biz-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 36px 30px; display: flex; flex-direction: column;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(0, 82, 255, .35); }
.biz-icon {
  width: 60px; height: 60px; border-radius: var(--radius);
  display: grid; place-items: center; color: var(--blue);
  background: linear-gradient(135deg, rgba(0, 82, 255, .1), rgba(0, 212, 255, .14));
  margin-bottom: 22px;
}
.biz-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.biz-card p { font-size: 14.5px; color: var(--text-soft); flex: 1; }
.biz-tags { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 22px; }
.biz-tags li {
  font-size: 12.5px; color: var(--blue); padding: 4px 12px;
  border: 1px solid rgba(0, 82, 255, .3); border-radius: 999px;
  background: rgba(0, 82, 255, .05);
}
.biz-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14.5px; font-weight: 600; color: var(--blue);
}
.biz-link .icon { transition: transform .25s var(--ease); }
.biz-link:hover .icon { transform: translateX(4px); }

/* ---------- 产品中心 ---------- */
.product-index { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-bottom: 14px; }
.product-index a {
  display: block; padding: 14px 16px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s;
}
.product-index a:hover {
  transform: translateY(-3px); border-color: rgba(0, 82, 255, .4); box-shadow: var(--shadow);
}
.product-index b { display: block; font-size: 14.5px; font-weight: 700; color: var(--navy); }
.product-index span { display: block; font-size: 12px; color: var(--gray); margin-top: 2px; }

.product-row {
  display: grid; grid-template-columns: 1fr 1.05fr; gap: 70px;
  align-items: center; padding: 46px 0;
}
.product-row + .product-row { border-top: 1px solid var(--line); }
.product-row-rev { grid-template-columns: 1.2fr 1fr; }
.product-row-rev .product-visual { order: 2; }
.product-row-rev .product-body { order: 1; }

.product-tag {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .08em;
  color: var(--blue); background: rgba(0, 82, 255, .08);
  border: 1px solid rgba(0, 82, 255, .22);
  padding: 4px 14px; border-radius: 999px; margin-bottom: 18px;
}
.product-body h3 { font-size: 30px; font-weight: 800; line-height: 1.4; margin-bottom: 16px; text-wrap: balance; }
.product-desc { color: var(--text-soft); font-size: 15.5px; margin-bottom: 28px; }

.feature-list { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 20px 26px; margin-bottom: 34px; }
.feature-list li { display: flex; gap: 12px; align-items: flex-start; }
.feature-list .icon { color: var(--blue); margin-top: 4px; }
.feature-list b { display: block; font-size: 15px; margin-bottom: 3px; }
.feature-list span { font-size: 13.5px; color: var(--text-soft); line-height: 1.6; }

/* 手机样机 */
.product-visual { display: flex; justify-content: center; }
.phone-mock {
  position: relative; width: 280px; height: 560px;
  background: #101f3c; border-radius: 40px; padding: 12px;
  box-shadow: var(--shadow-lg), inset 0 0 0 2px rgba(255, 255, 255, .07);
}
.phone-notch {
  position: absolute; top: 22px; left: 50%; transform: translateX(-50%);
  width: 96px; height: 22px; border-radius: 12px; background: #101f3c; z-index: 2;
}
.phone-screen {
  height: 100%; border-radius: 30px; overflow: hidden;
  background: linear-gradient(170deg, #f4f8ff, #e8eff9);
  display: flex; flex-direction: column;
}
.pm-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 40px 18px 12px; background: var(--navy); color: #fff;
}
.pm-title { font-size: 15px; font-weight: 700; letter-spacing: .04em; }
.pm-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.pm-stats { display: flex; gap: 10px; padding: 14px 14px 4px; }
.pm-stat {
  flex: 1; background: #fff; border-radius: var(--radius);
  padding: 10px 12px; box-shadow: 0 2px 8px rgba(10, 27, 61, .06);
}
.pm-stat b { display: block; font-size: 19px; color: var(--blue); }
.pm-stat i { font-style: normal; font-size: 11px; color: var(--gray); }
.pm-chat { flex: 1; padding: 12px 14px; display: flex; flex-direction: column; gap: 10px; }
.pm-msg { display: flex; gap: 8px; align-items: flex-start; }
.pm-avatar { width: 26px; height: 26px; border-radius: 8px; flex: none; }
.pm-avatar.a1 { background: linear-gradient(135deg, #0052FF, #00D4FF); }
.pm-avatar.a2 { background: linear-gradient(135deg, #0A1B3D, #3d5a8f); }
.pm-avatar.a3 { background: linear-gradient(135deg, #64748B, #a9bcd6); }
.pm-bubble {
  background: #fff; border-radius: 4px 10px 10px 10px; padding: 7px 10px;
  box-shadow: 0 2px 6px rgba(10, 27, 61, .05); max-width: 85%;
}
.pm-bubble b { font-size: 11px; color: var(--navy); }
.pm-bubble p { font-size: 11.5px; color: var(--text-soft); line-height: 1.5; }
.pm-tabbar {
  display: flex; justify-content: space-around; padding: 12px 20px 16px;
  background: #fff; border-top: 1px solid var(--line);
}
.pm-tabbar span { width: 22px; height: 5px; border-radius: 3px; background: var(--line); }
.pm-tabbar span.on { background: var(--blue); }

/* 数据大屏 */
.dash-mock {
  width: 100%; max-width: 560px; border-radius: 12px; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.dash-svg { width: 100%; height: auto; display: block; }

/* 设备管控台 */
.console-mock {
  width: 100%; max-width: 560px; padding: 22px; border-radius: 12px; overflow: hidden;
  color: #fff; background: linear-gradient(150deg, #0A1B3D, #12305e);
  box-shadow: var(--shadow-lg);
}
.cm-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.cm-title { font-size: 15px; font-weight: 700; letter-spacing: .04em; }
.cm-live {
  display: inline-flex; align-items: center; gap: 6px; flex: none;
  font-size: 11px; color: var(--cyan); padding: 3px 10px;
  border: 1px solid rgba(0, 212, 255, .45); border-radius: 999px;
}
.cm-live i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); animation: cmBlink 1.6s infinite; }
@keyframes cmBlink { 0%, 100% { opacity: 1; } 50% { opacity: .25; } }
.cm-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 16px 0; }
.cm-stat { background: rgba(255, 255, 255, .07); border-radius: var(--radius); padding: 12px 14px; }
.cm-stat b { display: block; font-size: 21px; font-weight: 700; }
.cm-stat i { font-style: normal; font-size: 11px; color: #8fa8c9; }
.cm-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.cm-list li {
  display: flex; align-items: center; gap: 12px;
  background: rgba(255, 255, 255, .05); border-radius: var(--radius); padding: 11px 14px;
}
.cm-avatar {
  width: 32px; height: 32px; border-radius: 9px; flex: none;
  display: grid; place-items: center; font-size: 13px; font-weight: 700;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}
.cm-info { flex: 1; min-width: 0; }
.cm-info b { display: block; font-size: 13.5px; font-weight: 600; }
.cm-info i { font-style: normal; font-size: 11.5px; color: #8fa8c9; }
.cm-badge { flex: none; font-size: 11px; padding: 3px 10px; border-radius: 999px; }
.cm-badge.on { color: var(--cyan); background: rgba(0, 212, 255, .1); border: 1px solid rgba(0, 212, 255, .4); }
.cm-badge.off { color: #9fb0c8; background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .18); }
.cm-foot { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.cm-chip {
  font-size: 11.5px; color: #b9cdea; padding: 4px 11px; border-radius: 999px;
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .16);
}

/* 老黄历样机 */
.cal-head { padding: 38px 18px 12px; text-align: center; background: var(--navy); color: #fff; }
.cal-lunar { display: block; font-size: 11.5px; color: var(--cyan); letter-spacing: .06em; }
.cal-day { display: block; font-size: 40px; font-weight: 800; line-height: 1.15; }
.cal-solar { display: block; font-size: 11px; color: rgba(255, 255, 255, .68); }
.cal-yiji { display: flex; flex-direction: column; gap: 7px; padding: 10px 14px 2px; }
.cal-row { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.cal-row b {
  width: 22px; height: 22px; border-radius: 6px; flex: none;
  display: grid; place-items: center; font-size: 11.5px; color: #fff;
}
.cal-row b.yi { background: #16a34a; }
.cal-row b.ji { background: #dc2626; }
.cal-row span { font-size: 11px; color: var(--text-soft); padding: 2px 8px; border-radius: 999px; background: rgba(10, 27, 61, .06); }
.cal-grid {
  list-style: none; flex: 1; display: grid; padding: 10px 12px;
  grid-template-columns: repeat(7, 1fr); grid-auto-rows: 1fr; gap: 2px;
}
.cal-grid li { display: grid; place-items: center; font-size: 11px; color: var(--text-soft); border-radius: 6px; }
.cal-grid li.wd { font-size: 10px; color: var(--gray); }
.cal-grid li.jie { color: var(--blue); font-weight: 700; }
.cal-grid li.on { color: #fff; font-weight: 700; background: var(--blue); box-shadow: 0 4px 10px rgba(0, 82, 255, .3); }
.cal-remind { display: flex; flex-direction: column; gap: 7px; padding: 4px 14px 16px; }
.cal-remind > div { background: #fff; border-radius: var(--radius); padding: 8px 11px; box-shadow: 0 2px 8px rgba(10, 27, 61, .06); }
.cal-remind b { display: block; font-size: 12px; }
.cal-remind i { font-style: normal; font-size: 10.5px; color: var(--gray); }

/* 自律番茄样机 */
.tm-head {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 40px 18px 12px; background: var(--navy); color: #fff;
}
.tm-title { font-size: 14px; font-weight: 700; letter-spacing: .04em; }
.tm-badge {
  flex: none; font-size: 10.5px; color: var(--cyan); padding: 3px 10px; border-radius: 999px;
  background: rgba(0, 212, 255, .12); border: 1px solid rgba(0, 212, 255, .45);
}
.tm-ring { flex: 1; display: grid; place-items: center; padding: 12px; }
.tm-ring-inner {
  position: relative; width: 168px; height: 168px; border-radius: 50%;
  display: grid; place-content: center; text-align: center;
  background: conic-gradient(var(--blue) 0 73%, rgba(10, 27, 61, .1) 73% 100%);
}
.tm-ring-inner::before {
  content: ""; position: absolute; inset: 14px; border-radius: 50%;
  background: #fff; box-shadow: 0 4px 14px rgba(10, 27, 61, .08);
}
.tm-ring-inner b { position: relative; display: block; font-size: 32px; font-weight: 800; line-height: 1.2; color: var(--navy); }
.tm-ring-inner i { position: relative; font-style: normal; font-size: 10.5px; color: var(--gray); }
.tm-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; padding: 0 14px 12px; }
.tm-stats > div { background: #fff; border-radius: var(--radius); padding: 9px 10px; text-align: center; box-shadow: 0 2px 8px rgba(10, 27, 61, .06); }
.tm-stats b { display: block; font-size: 17px; color: var(--blue); }
.tm-stats i { font-style: normal; font-size: 10px; color: var(--gray); }
.tm-rules { list-style: none; display: flex; flex-direction: column; gap: 6px; padding: 0 14px 16px; }
.tm-rules li {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: #fff; border-radius: var(--radius); padding: 9px 12px; box-shadow: 0 2px 8px rgba(10, 27, 61, .05);
}
.tm-rules span { font-size: 11.5px; color: var(--text-soft); }
.tm-rules b { flex: none; font-size: 10.5px; font-weight: 600; padding: 2px 9px; border-radius: 999px; }
.tm-rules b.on { color: var(--blue); background: rgba(0, 82, 255, .1); }
.tm-rules b.off { color: var(--gray); background: rgba(100, 116, 139, .12); }

/* ---------- 落地案例 ---------- */
.case-row { padding-top: 0; }
.case-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.case-chips span {
  font-size: 12.5px; color: #8a5a06; padding: 4px 13px; border-radius: 999px;
  background: rgba(246, 183, 60, .16); border: 1px solid rgba(217, 138, 18, .38);
}

/* 金豆荚样机（品牌金 #F6B73C / 深金 #D98A12 / 墨 #171A22） */
.jd-head {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 40px 18px 14px; color: #171A22;
  background: linear-gradient(135deg, #F6B73C, #D98A12);
}
.jd-brand { font-size: 15px; font-weight: 800; letter-spacing: .06em; }
.jd-slogan { font-size: 10.5px; font-weight: 600; opacity: .78; }
.jd-wallet {
  display: flex; align-items: baseline; gap: 8px;
  margin: 12px 14px 0; padding: 12px 14px; border-radius: var(--radius);
  background: #fff; box-shadow: 0 2px 10px rgba(23, 26, 34, .08);
}
.jd-wallet b { font-size: 23px; font-weight: 800; color: #D98A12; letter-spacing: .01em; }
.jd-wallet i { font-style: normal; font-size: 10.5px; color: var(--gray); white-space: nowrap; }
.jd-plus {
  margin-left: auto; font-size: 10.5px; font-weight: 600; color: #3E8E4E; white-space: nowrap;
  background: rgba(99, 190, 116, .16); padding: 3px 9px; border-radius: 999px;
}
.jd-tasks { list-style: none; display: flex; flex-direction: column; gap: 7px; padding: 10px 14px; flex: 1; }
.jd-tasks li {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: #fff; border-radius: var(--radius); padding: 9px 12px;
  box-shadow: 0 2px 8px rgba(23, 26, 34, .05);
}
.jd-tasks span { font-size: 11.5px; color: var(--text-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.jd-tasks b { flex: none; font-size: 12px; font-weight: 700; color: #D98A12; }
.jd-shop {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  margin: 0 14px 16px; padding: 11px 13px; border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(246, 183, 60, .2), rgba(217, 138, 18, .1));
  border: 1px dashed rgba(217, 138, 18, .55);
}
.jd-shop span { font-size: 11.5px; color: #8a5a06; }
.jd-shop b { flex: none; font-size: 11px; font-weight: 700; color: #fff; background: #D98A12; padding: 4px 11px; border-radius: 999px; }

.case-facts { margin-top: 8px; }
.case-facts h3 { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 20px; }
.case-facts-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.case-fact {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  border-top: 3px solid #F6B73C; padding: 22px 24px;
}
.case-fact b { display: block; font-size: 15px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.case-fact span { font-size: 13.5px; color: var(--text-soft); line-height: 1.68; }

/* ---------- 视频中心 ---------- */
.video-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.video-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 16 / 9; text-align: left; color: #fff;
  border: 1px solid rgba(255, 255, 255, .1);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
  background: var(--navy-2);
}
.video-card-main { grid-column: 1 / -1; aspect-ratio: 21 / 9; }
.video-card:hover { transform: translateY(-5px); box-shadow: 0 20px 46px rgba(0, 0, 0, .4); }
.video-poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.video-card:hover .video-poster { transform: scale(1.05); }
.video-card::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10, 27, 61, 0) 40%, rgba(10, 27, 61, .82));
}
.video-play {
  position: absolute; z-index: 2; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 62px; height: 62px; border-radius: 50%;
  display: grid; place-items: center;
  color: var(--navy); background: rgba(255, 255, 255, .92);
  transition: transform .3s var(--ease), background .3s;
}
.video-play svg { width: 26px; height: 26px; margin-left: 2px; }
.video-card:hover .video-play { transform: translate(-50%, -50%) scale(1.12); background: var(--cyan); }
.video-card-main .video-play { width: 78px; height: 78px; }
.video-card-main .video-play svg { width: 32px; height: 32px; }
.video-meta { position: absolute; z-index: 2; left: 18px; right: 18px; bottom: 16px; }
.video-meta b { display: block; font-size: 16px; font-weight: 700; }
.video-card-main .video-meta b { font-size: 21px; }
.video-meta i { font-style: normal; font-size: 12.5px; color: rgba(255, 255, 255, .72); }

/* 视频弹窗 */
.video-modal, .img-modal {
  position: fixed; inset: 0; z-index: 200;
  display: grid; place-items: center; padding: 24px;
}
.video-modal[hidden], .img-modal[hidden] { display: none; }
.video-modal-mask { position: absolute; inset: 0; background: rgba(6, 13, 29, .86); backdrop-filter: blur(6px); }
.video-modal-box {
  position: relative; width: min(920px, 100%);
  background: var(--navy); border-radius: 12px; overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .12);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .5);
  animation: modalIn .35s var(--ease);
}
@keyframes modalIn { from { opacity: 0; transform: translateY(24px) scale(.97); } }
.video-modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; color: #fff; font-weight: 600; font-size: 15.5px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.video-modal-close {
  color: rgba(255, 255, 255, .75); padding: 6px; border-radius: 6px;
  transition: color .2s, background .2s;
}
.video-modal-close:hover { color: #fff; background: rgba(255, 255, 255, .12); }
.video-stage { position: relative; aspect-ratio: 16 / 9; background: #050d1d; overflow: hidden; }
.video-stage video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.video-preview-img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transform: scale(1.02);
}
.video-stage.playing .video-preview-img { animation: kenburns 24s linear infinite alternate; }
@keyframes kenburns {
  from { transform: scale(1.02) translate(0, 0); }
  to { transform: scale(1.16) translate(-2.5%, -2%); }
}
.video-stage-toggle {
  position: absolute; z-index: 3; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 76px; height: 76px; border-radius: 50%;
  display: grid; place-items: center;
  color: var(--navy); background: rgba(255, 255, 255, .92);
  transition: transform .25s var(--ease), opacity .25s;
}
.video-stage-toggle svg { width: 30px; height: 30px; }
.video-stage-toggle .icon-pause { display: none; }
.video-stage.playing .video-stage-toggle { opacity: 0; }
.video-stage.playing:hover .video-stage-toggle { opacity: .95; }
.video-stage.playing .icon-play { display: none; }
.video-stage.playing .icon-pause { display: block; }
.video-progress { height: 4px; background: rgba(255, 255, 255, .12); }
.video-progress span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--blue), var(--cyan)); transition: width .2s linear; }
.video-modal-tip { padding: 12px 20px 16px; font-size: 13px; color: rgba(255, 255, 255, .55); }

/* ---------- 关于我们 ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.about-text p { font-size: 16px; color: var(--text-soft); margin-bottom: 16px; }
.about-text b { color: var(--navy); }
.about-points { display: grid; gap: 14px; margin-top: 30px; }
.about-points div {
  border-left: 3px solid var(--blue); padding: 4px 0 4px 16px;
}
.about-points b { display: block; font-size: 15.5px; }
.about-points span { font-size: 13.5px; color: var(--text-soft); }

.license-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px; box-shadow: var(--shadow);
}
.license-head { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; color: var(--navy); }
.license-head .icon { color: var(--blue); }
.license-head h3 { font-size: 18px; }
.license-list { display: grid; gap: 0; }
.license-list > div {
  display: grid; grid-template-columns: 150px 1fr; gap: 14px;
  padding: 10px 0; border-bottom: 1px dashed var(--line); font-size: 14px;
}
.license-list > div:last-child { border-bottom: none; }
.license-list dt { color: var(--gray); flex: none; }
.license-list dd { color: var(--text); font-weight: 500; }
/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: start; }
.contact-info { display: grid; gap: 26px; padding-top: 8px; }
.contact-item { display: flex; gap: 14px; align-items: flex-start; }
.contact-item .icon {
  width: 42px; height: 42px; padding: 11px; color: var(--blue);
  background: rgba(0, 82, 255, .08); border-radius: var(--radius); flex: none;
}
.contact-item b { display: block; font-size: 15.5px; margin-bottom: 2px; }
.contact-item span { font-size: 14px; color: var(--text-soft); }

.contact-form {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px; box-shadow: var(--shadow);
  display: grid; gap: 18px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label { display: grid; gap: 7px; font-size: 14px; font-weight: 600; color: var(--navy); }
.contact-form input, .contact-form select, .contact-form textarea {
  font: inherit; font-weight: 400; font-size: 14.5px; color: var(--text);
  border: 1px solid var(--line); border-radius: 6px; padding: 11px 14px;
  background: #fbfcfe; outline: none; transition: border-color .2s, box-shadow .2s;
  width: 100%; resize: vertical;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  border-color: var(--blue); box-shadow: 0 0 0 3px rgba(0, 82, 255, .12); background: #fff;
}
.form-tip { font-size: 13.5px; color: var(--blue); min-height: 20px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy); color: rgba(255, 255, 255, .72); }
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 30px; padding: 48px 0; flex-wrap: wrap;
}
.footer-logo-img { height: 38px; width: auto; margin-bottom: 14px; }
.footer-brand p { font-size: 13.5px; color: rgba(255, 255, 255, .55); }
.footer-nav { display: flex; gap: 26px; flex-wrap: wrap; }
.footer-nav a { font-size: 14px; transition: color .2s; }
.footer-nav a:hover { color: var(--cyan); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 18px 0; }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 12.5px; color: rgba(255, 255, 255, .45); }
.footer-bottom a { color: rgba(255, 255, 255, .45); text-decoration: none; }
.footer-bottom a:hover { color: rgba(255, 255, 255, .8); }

/* ---------- 右下角浮动联系 ---------- */
.float-contact {
  position: fixed; right: 22px; bottom: 22px; z-index: 150;
  display: grid; justify-items: end; gap: 14px;
}
.float-btn {
  position: relative;
  width: 56px; height: 56px; border-radius: 50%;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(135deg, var(--blue), #2f78ff);
  box-shadow: 0 10px 26px rgba(0, 82, 255, .42);
  transition: transform .25s var(--ease);
}
.float-btn:hover { transform: translateY(-3px) scale(1.04); }
.float-btn::after {
  content: ""; position: absolute; inset: -5px; border-radius: 50%;
  border: 2px solid rgba(0, 82, 255, .45);
  animation: fabPulse 2.4s var(--ease) infinite;
}
@keyframes fabPulse {
  0% { transform: scale(.86); opacity: 0; }
  35% { opacity: 1; }
  100% { transform: scale(1.22); opacity: 0; }
}
.float-btn svg { width: 26px; height: 26px; }
.float-btn .icon-close { display: none; }
.float-contact.open .icon-chat { display: none; }
.float-contact.open .icon-close { display: block; }
.float-contact.open .float-btn::after { animation: none; opacity: 0; }

.float-panel {
  width: 246px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  padding: 20px 18px; text-align: center;
  animation: panelIn .3s var(--ease);
}
.float-panel[hidden] { display: none; }
@keyframes panelIn { from { opacity: 0; transform: translateY(14px) scale(.96); } }
.float-panel-title { font-size: 15px; font-weight: 700; color: var(--navy); margin-bottom: 12px; }
.float-qr { width: 100%; border-radius: 6px; border: 1px solid var(--line); }
.float-panel-name { font-size: 13px; color: var(--gray); margin: 10px 0 14px; }

/* ---------- 入场动效 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1120px) and (min-width: 901px) {
  /* 七项导航在中等宽度下收紧，避免折行（900px 时需求约 488px，可用约 517px） */
  .header-inner { gap: 18px; }
  .main-nav { gap: 16px; }
  .main-nav a { font-size: 14px; }
}

@media (max-width: 900px) {
  /* 汉堡菜单在导航放不下之前接管 */
  .nav-toggle { display: flex; margin-left: auto; z-index: 102; }
  .main-nav {
    position: fixed; inset: 0; z-index: 101;
    flex-direction: column; align-items: center; justify-content: center; gap: 30px;
    background: rgba(10, 27, 61, .97);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    opacity: 0; pointer-events: none; transition: opacity .3s;
  }
  .main-nav.open { opacity: 1; pointer-events: auto; }
  .main-nav a { color: #fff !important; font-size: 19px; }
  body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); background: #fff; }
  body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: #fff; }
}

@media (max-width: 1020px) {
  .hero-title { font-size: 56px; }
  .biz-grid { grid-template-columns: 1fr; }
  .product-index { grid-template-columns: repeat(3, 1fr); }
  .case-facts-grid { grid-template-columns: 1fr 1fr; }
  .product-row { grid-template-columns: 1fr; gap: 40px; }
  .product-row-rev .product-visual { order: 0; }
  .video-grid { grid-template-columns: 1fr 1fr; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 720px) {
  .section { padding: 72px 0; }
  .section-title { font-size: 29px; }
  .hero-title { font-size: 42px; }
  .hero-sub { font-size: 16px; }
  .hero-desc { font-size: 15px; }
  .hero-content { padding-bottom: 180px; }
  .hero-stats-inner { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(3) { border-left: none; }
  .stat { padding: 14px 8px; }
  .stat-num { font-size: 26px; }
  .header-cta { display: none; }
  .video-grid { grid-template-columns: 1fr; }
  .video-card-main { aspect-ratio: 16 / 9; }
  .product-index { grid-template-columns: 1fr 1fr; gap: 8px; }
  .product-index a { padding: 10px 12px; }
  .console-mock { padding: 16px; }
  .cm-stat b { font-size: 18px; }
  .cm-list li { gap: 9px; padding: 9px 11px; }
  .case-facts-grid { grid-template-columns: 1fr; gap: 12px; }
  .case-fact { padding: 18px 20px; }
  .feature-list { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .license-list > div { grid-template-columns: 1fr; gap: 2px; }
  .phone-mock { width: 250px; height: 500px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .float-contact { right: 16px; bottom: 16px; }
  .float-panel { width: 220px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .video-stage.playing .video-preview-img { animation: none; }
}