/* ============================================================
   售后易官网 · main.css
   版式参考 meflow（深蓝 Hero / 场景Tabs / 行业Tabs / Logo墙 /
   为何选择 / CTA / 悬浮客服条），主色保留科技蓝。
   ============================================================ */

:root {
  --brand: #007BFF;
  --brand-600: #0062E0;
  --brand-700: #0050C8;
  --brand-050: #EDF5FF;
  --brand-100: #D9EBFF;
  --cyan: #00C2FF;
  --navy-900: #071A3C;
  --navy-800: #0B2550;
  --ink-900: #0F1E3D;
  --ink-700: #3A4A66;
  --ink-600: #4A5A75;
  --ink-400: #8A97AD;
  --line: #E5EBF4;
  --bg-soft: #F5F8FC;
  --white: #fff;
  --grad: linear-gradient(135deg, #006AFF 0%, #00C2FF 100%);
  --shadow-sm: 0 2px 10px rgba(9, 30, 66, 0.06);
  --shadow-md: 0 10px 34px rgba(9, 30, 66, 0.10);
  --shadow-lg: 0 18px 50px rgba(9, 30, 66, 0.16);
  --radius: 14px;
  --radius-lg: 20px;
  --header-h: 72px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--ink-600);
  font-size: 15px;
  line-height: 1.75;
  background: var(--white);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color .2s; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
h1, h2, h3, h4 { color: var(--ink-900); font-weight: 700; line-height: 1.35; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--brand); color: #fff; padding: 8px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 0 30px; height: 48px; border-radius: 999px;
  font-size: 16px; font-weight: 600; letter-spacing: .5px;
  transition: all .22s ease; white-space: nowrap;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #006AFF, #00A6FF);
  box-shadow: 0 8px 22px rgba(0, 106, 255, .32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0, 106, 255, .42); color: #fff; }
.btn-outline { color: #fff; border: 1.5px solid rgba(255,255,255,.55); background: transparent; }
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,.10); color: #fff; }
.btn-outline-blue { color: var(--brand); border: 1.5px solid var(--brand-100); background: #fff; }
.btn-outline-blue:hover { border-color: var(--brand); background: var(--brand-050); }
.btn-lg { height: 54px; padding: 0 40px; font-size: 17px; }
.btn-sm { height: 38px; padding: 0 22px; font-size: 14px; box-shadow: none; }
.btn-white { background: #fff; color: var(--brand-600); box-shadow: 0 10px 26px rgba(0, 40, 90, .25); }
.btn-white:hover { transform: translateY(-2px); color: var(--brand-700); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h); background: rgba(255,255,255,.98);
  transition: box-shadow .25s ease;
  border-bottom: 1px solid rgba(229,235,244,.6);
}
.site-header.is-scrolled { box-shadow: 0 4px 18px rgba(9, 30, 66, .08); }
.header-inner { display: flex; align-items: center; height: var(--header-h); gap: 40px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand img { width: 36px; height: 36px; }
.brand span { font-size: 21px; font-weight: 800; color: var(--ink-900); letter-spacing: 1px; }
.main-nav { display: flex; gap: 6px; flex: 1; justify-content: center; }
.main-nav a {
  position: relative; padding: 8px 16px; font-size: 15.5px; font-weight: 500; color: var(--ink-700);
  border-radius: 8px;
}
.main-nav a:hover { color: var(--brand); }
.main-nav a.active { color: var(--brand); font-weight: 700; }
.main-nav a.active::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: -2px; height: 3px;
  border-radius: 2px; background: var(--grad);
}
.header-cta { display: flex; align-items: center; gap: 18px; flex-shrink: 0; }
.header-phone { display: flex; align-items: center; gap: 7px; font-weight: 700; color: var(--ink-900); font-size: 15.5px; }
.header-phone svg { color: var(--brand); }
.header-phone:hover { color: var(--brand); }
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; color: var(--ink-900); }
.nav-toggle svg { width: 24px; height: 24px; margin: 9px auto; display: block; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--navy-900); color: #fff;
  padding: 96px 0 110px;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(115deg, rgba(7,26,60,.96) 0%, rgba(8,42,96,.88) 46%, rgba(0,98,220,.62) 100%),
    url("../../images/banner-slide1.jpg") center/cover no-repeat;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(120,180,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,180,255,.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 80% at 60% 40%, #000 30%, transparent 75%);
}
.hero .container { position: relative; z-index: 2; }
.hero-inner { max-width: 820px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 18px; border-radius: 999px; margin-bottom: 26px;
  font-size: 14px; color: #BBD6FF;
  background: rgba(0,122,255,.16); border: 1px solid rgba(120,180,255,.28);
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.hero h1 { color: #fff; font-size: 52px; line-height: 1.28; letter-spacing: 1px; margin-bottom: 22px; }
.hero h1 em { font-style: normal; background: linear-gradient(120deg, #6EC3FF, #00E0FF); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-sub { font-size: 18.5px; color: rgba(214,231,255,.88); max-width: 660px; margin-bottom: 40px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-trust { display: flex; align-items: center; gap: 14px; margin-top: 46px; color: #9DB8E6; font-size: 14px; flex-wrap: wrap; }
.hero-trust b { color: #D9EBFF; font-weight: 600; }
.hero-trust .sep { width: 1px; height: 14px; background: rgba(157,184,230,.4); }

/* ---------- Logo 墙（跑马灯） ---------- */
.logo-wall { background: #fff; padding: 44px 0 36px; border-bottom: 1px solid var(--line); }
.logo-wall-title { text-align: center; font-size: 14px; color: var(--ink-400); letter-spacing: 3px; margin-bottom: 26px; }
.marquee { overflow: hidden; position: relative; }
.marquee::before, .marquee::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 120px; z-index: 2; pointer-events: none;
}
.marquee::before { left: 0; background: linear-gradient(90deg, #fff, transparent); }
.marquee::after { right: 0; background: linear-gradient(-90deg, #fff, transparent); }
.marquee-track { display: flex; gap: 18px; width: max-content; animation: marquee 36s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track .partner {
  width: 150px; height: 56px; border-radius: 10px; border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; padding: 8px;
  background: #fff; filter: grayscale(1); opacity: .72; transition: all .25s;
}
.marquee-track .partner:hover { filter: none; opacity: 1; border-color: var(--brand-100); box-shadow: var(--shadow-sm); }
.marquee-track .partner img { max-height: 100%; object-fit: contain; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- 通用 Section ---------- */
.section { padding: 92px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 700; color: var(--brand); letter-spacing: 2px;
  padding: 5px 16px; border-radius: 999px; background: var(--brand-050);
  border: 1px solid var(--brand-100); margin-bottom: 16px;
}
.kicker::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }
.section-head h2 { font-size: 36px; letter-spacing: .5px; margin-bottom: 14px; }
.section-head p { font-size: 16px; color: var(--ink-400); }
.section-head.center-left { text-align: left; margin-left: 0; }

/* ---------- 场景 Tabs（meflow 核心版式） ---------- */
.scene-tabs .tab-bar { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-bottom: 48px; }
.scene-tabs .tab-btn {
  padding: 11px 26px; border-radius: 999px; font-size: 15.5px; font-weight: 600; color: var(--ink-600);
  background: #fff; border: 1.5px solid var(--line); transition: all .22s;
}
.scene-tabs .tab-btn:hover { color: var(--brand); border-color: var(--brand-100); }
.scene-tabs .tab-btn.active {
  color: #fff; border-color: transparent;
  background: linear-gradient(135deg, #006AFF, #00A6FF);
  box-shadow: 0 8px 20px rgba(0,106,255,.28);
}
.scene-panel { display: none; animation: fadeUp .45s ease; }
.scene-panel.active { display: grid; grid-template-columns: 1.08fr 1fr; gap: 56px; align-items: center; }
.scene-visual { position: relative; }
.scene-visual img { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); aspect-ratio: 16/10.5; object-fit: cover; }
.scene-visual::after {
  content: ""; position: absolute; inset: auto -14px -14px auto; width: 56%; height: 60%;
  border-radius: var(--radius-lg); z-index: -1;
  background: linear-gradient(135deg, rgba(0,194,255,.28), rgba(0,106,255,.10));
}
.scene-info h3 { font-size: 27px; margin-bottom: 14px; }
.scene-info .lead { color: var(--ink-600); margin-bottom: 26px; }
.scene-points { display: grid; gap: 16px; }
.scene-point { display: flex; gap: 14px; align-items: flex-start; }
.scene-point .pi {
  flex-shrink: 0; width: 42px; height: 42px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-050); color: var(--brand);
}
.scene-point h4 { font-size: 16.5px; margin-bottom: 3px; }
.scene-point p { font-size: 14.5px; color: var(--ink-400); line-height: 1.65; }
.scene-info .btn { margin-top: 30px; }

/* ---------- 产品功能矩阵 ---------- */
.module-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.module-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; transition: all .25s ease; position: relative; overflow: hidden;
}
.module-card::before {
  content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 3px;
  background: var(--grad); opacity: 0; transition: opacity .25s;
}
.module-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--brand-100); }
.module-card:hover::before { opacity: 1; }
.module-card .mi {
  width: 52px; height: 52px; border-radius: 14px; margin-bottom: 18px;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-050); color: var(--brand);
}
.module-card h3 { font-size: 18px; margin-bottom: 8px; }
.module-card p { font-size: 14px; color: var(--ink-400); line-height: 1.7; }

/* ---------- 数据成效带 ---------- */
.stats-band {
  position: relative; overflow: hidden; background: var(--navy-900); color: #fff;
  padding: 74px 0;
}
.stats-band::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 90% at 85% 10%, rgba(0,140,255,.35), transparent 60%),
    radial-gradient(ellipse 50% 80% at 10% 100%, rgba(0,194,255,.16), transparent 60%);
}
.stats-band .container { position: relative; z-index: 2; }
.stats-band .section-head h2, .stats-band .section-head p { color: #fff; }
.stats-band .section-head p { color: #9DB8E6; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-item {
  text-align: center; padding: 34px 18px; border-radius: var(--radius);
  background: rgba(255,255,255,.05); border: 1px solid rgba(140,180,255,.16);
  backdrop-filter: blur(4px);
}
.stat-item .num { font-size: 46px; font-weight: 800; background: linear-gradient(120deg, #6EC3FF, #00E0FF); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat-item .num small { font-size: 24px; }
.stat-item .lbl { margin-top: 8px; color: #B9CFF2; font-size: 15px; }
.stats-note { text-align: center; color: #7E97C4; font-size: 12.5px; margin-top: 22px; }

/* ---------- 行业方案 Tabs ---------- */
.industry-panel { display: none; animation: fadeUp .45s ease; }
.industry-panel.active { display: block; }
.industry-card {
  display: grid; grid-template-columns: 420px 1fr; gap: 0;
  background: #fff; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-md); border: 1px solid var(--line);
}
.industry-card .cover { position: relative; min-height: 320px; }
.industry-card .cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.industry-card .body { padding: 44px 48px; }
.industry-card h3 { font-size: 24px; margin-bottom: 6px; }
.industry-card .sub { color: var(--brand); font-size: 14.5px; font-weight: 600; margin-bottom: 18px; }
.pain-points { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 22px; margin: 18px 0 22px; }
.pain-points li { display: flex; gap: 9px; font-size: 14.5px; color: var(--ink-600); align-items: baseline; }
.pain-points li::before { content: "•"; color: var(--brand); font-weight: 800; }
.industry-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.industry-tags span {
  padding: 6px 14px; border-radius: 8px; font-size: 13.5px;
  background: var(--brand-050); color: var(--brand-600); font-weight: 500;
}

/* ---------- 为何选择 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.why-card {
  position: relative; padding: 36px 28px; border-radius: var(--radius-lg);
  background: #fff; border: 1px solid var(--line); overflow: hidden; transition: all .25s;
}
.why-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.why-card .wi {
  width: 54px; height: 54px; border-radius: 16px; margin-bottom: 20px;
  display: flex; align-items: center; justify-content: center; color: #fff;
  background: var(--grad); box-shadow: 0 8px 18px rgba(0,106,255,.28);
}
.why-card h3 { font-size: 19px; margin-bottom: 10px; }
.why-card p { font-size: 14.5px; color: var(--ink-400); line-height: 1.75; }

/* ---------- 案例 / 资讯卡片 ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  display: flex; flex-direction: column; background: #fff; border-radius: var(--radius-lg);
  overflow: hidden; border: 1px solid var(--line); transition: all .25s;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.case-card .cover { position: relative; aspect-ratio: 16/9.6; overflow: hidden; }
.case-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.case-card:hover .cover img { transform: scale(1.05); }
.case-card .cover .tag {
  position: absolute; left: 14px; top: 14px; z-index: 2;
  padding: 4px 12px; border-radius: 8px; font-size: 13px; font-weight: 600;
  color: #fff; background: rgba(0,98,220,.85); backdrop-filter: blur(2px);
}
.case-card .body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.case-card h3 { font-size: 17.5px; margin-bottom: 8px; line-height: 1.5; }
.case-card:hover h3 { color: var(--brand); }
.case-card p { font-size: 14px; color: var(--ink-400); line-height: 1.7; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.case-metrics { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; }
.case-metrics span {
  font-size: 12.5px; color: var(--brand-600); background: var(--brand-050);
  padding: 3px 10px; border-radius: 6px; font-weight: 600;
}
.news-card {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 28px 28px 24px; transition: all .25s; position: relative; overflow: hidden;
}
.news-card::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 3px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.news-card:hover::after { transform: scaleX(1); }
.news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.news-meta .cat-tag {
  padding: 3px 12px; border-radius: 6px; font-size: 12.5px; font-weight: 700;
  color: var(--brand); background: var(--brand-050);
}
.news-meta time { font-size: 13px; color: var(--ink-400); }
.news-card h3 { font-size: 17px; line-height: 1.55; margin-bottom: 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card:hover h3 { color: var(--brand); }
.news-card p { font-size: 14px; color: var(--ink-400); line-height: 1.7; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.section-more { text-align: center; margin-top: 44px; }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; margin-bottom: 14px; overflow: hidden; transition: box-shadow .25s; }
.faq-item.open { box-shadow: var(--shadow-md); border-color: var(--brand-100); }
.faq-q {
  width: 100%; display: flex; align-items: center; gap: 14px; text-align: left;
  padding: 20px 24px; font-size: 16.5px; font-weight: 600; color: var(--ink-900);
}
.faq-q .qi { flex-shrink: 0; width: 34px; height: 34px; border-radius: 10px; background: var(--brand-050); color: var(--brand); display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 800; }
.faq-q .arrow { margin-left: auto; flex-shrink: 0; color: var(--ink-400); transition: transform .3s; }
.faq-item.open .arrow { transform: rotate(180deg); color: var(--brand); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a-inner { padding: 0 24px 22px 72px; color: var(--ink-600); font-size: 15px; line-height: 1.85; }

/* ---------- CTA 横幅 ---------- */
.cta-band { position: relative; overflow: hidden; padding: 86px 0; background: linear-gradient(120deg, #0050C8 0%, #006AFF 45%, #00B0FF 100%); }
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 100% at 50% 50%, #000 40%, transparent 80%);
}
.cta-band .container { position: relative; z-index: 2; text-align: center; }
.cta-band h2 { color: #fff; font-size: 36px; margin-bottom: 14px; letter-spacing: 1px; }
.cta-band p { color: rgba(255,255,255,.85); font-size: 17px; margin-bottom: 36px; }
.cta-band .hero-buttons { justify-content: center; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy-900); color: #9DB8E6; padding: 66px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 44px; padding-bottom: 46px; }
.footer-brand .brand { margin-bottom: 18px; }
.footer-brand .brand span { color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.85; max-width: 300px; }
.footer-col h3 { color: #fff; font-size: 16px; margin-bottom: 18px; letter-spacing: 1px; }
.footer-col li { margin-bottom: 11px; }
.footer-col a { font-size: 14px; color: #9DB8E6; }
.footer-col a:hover { color: #fff; }
.footer-col .fcontact { display: flex; gap: 10px; align-items: baseline; font-size: 14px; margin-bottom: 12px; color: #9DB8E6; }
.footer-col .fcontact .fc-label { flex: none; }
.footer-col .fcontact .fc-val, .footer-col .fcontact > b { flex: 1; min-width: 0; }
.footer-col .fcontact b { color: #D9EBFF; font-weight: 600; }
.qr-codes { display: flex; gap: 16px; }
.qr-codes .qr { text-align: center; }
.qr-codes .qr img { width: 96px; height: 96px; border-radius: 10px; background: #fff; padding: 6px; margin-bottom: 8px; }
.qr-codes .qr p { font-size: 12.5px; color: #8FA9D6; }
.footer-bar { border-top: 1px solid rgba(140,180,255,.14); padding: 20px 0; }
.footer-bar .container { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; font-size: 13px; color: #7E97C4; }
.footer-bar a { color: #7E97C4; }
.footer-bar a:hover { color: #fff; }

/* ---------- 悬浮客服条 ---------- */
.float-side {
  position: fixed; right: 18px; bottom: 90px; z-index: 90;
  display: flex; flex-direction: column; gap: 10px;
}
.float-side a {
  display: flex; flex-direction: column; align-items: center; gap: 5px;
  width: 60px; padding: 11px 4px; border-radius: 12px; font-size: 12px;
  color: var(--ink-700); background: #fff; box-shadow: var(--shadow-md); border: 1px solid var(--line);
  transition: all .22s; position: relative;
}
.float-side a:hover { color: var(--brand); transform: translateY(-3px); }
.float-side a.hot { background: linear-gradient(135deg, #006AFF, #00A6FF); color: #fff; border: 0; }
.float-side .qr-pop {
  position: absolute; right: 72px; top: -6px; width: 132px; padding: 10px; text-align: center;
  background: #fff; border-radius: 12px; box-shadow: var(--shadow-lg); border: 1px solid var(--line);
  display: none; color: var(--ink-600); font-size: 12px;
}
.float-side .qr-pop img { border-radius: 8px; margin-bottom: 6px; }
.float-side a:hover .qr-pop { display: block; }
.back-top {
  position: fixed; right: 18px; bottom: 22px; z-index: 90;
  width: 44px; height: 44px; border-radius: 12px;
  background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  color: var(--ink-600); display: none; align-items: center; justify-content: center;
}
.back-top.show { display: flex; }
.back-top:hover { color: var(--brand); }

/* ---------- 内页 Hero / 面包屑 ---------- */
.page-hero {
  position: relative; overflow: hidden; padding: 72px 0 64px;
  background:
    radial-gradient(ellipse 70% 120% at 80% -20%, rgba(0,140,255,.30), transparent 60%),
    linear-gradient(130deg, #071A3C 0%, #0B2550 60%, #0E3B8C 100%);
  color: #fff; text-align: center;
}
.page-hero h1 { color: #fff; font-size: 38px; letter-spacing: 1px; margin-bottom: 12px; }
.page-hero p { color: #A9C4EE; font-size: 16.5px; max-width: 640px; margin: 0 auto; }
.breadcrumb {
  display: flex; justify-content: center; gap: 8px; margin-top: 26px; font-size: 13.5px; color: #8FA9D6;
}
.breadcrumb a { color: #8FA9D6; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: .5; }

/* ---------- 列表筛选 ---------- */
.filter-bar { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-bottom: 44px; }
.filter-btn {
  padding: 9px 22px; border-radius: 999px; font-size: 14.5px; font-weight: 500;
  color: var(--ink-600); background: #fff; border: 1.5px solid var(--line); transition: all .2s;
}
.filter-btn:hover { color: var(--brand); border-color: var(--brand-100); }
.filter-btn.active { color: #fff; background: linear-gradient(135deg, #006AFF, #00A6FF); border-color: transparent; }

/* ---------- 文章页 ---------- */
.article-layout { display: grid; grid-template-columns: 1fr 300px; gap: 40px; align-items: start; }
.article-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 48px 52px; box-shadow: var(--shadow-sm);
}
.article-card h1 { font-size: 30px; line-height: 1.5; margin-bottom: 16px; }
.article-meta { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; padding-bottom: 22px; border-bottom: 1px solid var(--line); margin-bottom: 34px; font-size: 14px; color: var(--ink-400); }
.article-meta .cat-tag { padding: 3px 12px; border-radius: 6px; font-size: 12.5px; font-weight: 700; color: var(--brand); background: var(--brand-050); }
.article-content { font-size: 16px; line-height: 1.95; color: #33445F; }
.article-content h2 { font-size: 22px; margin: 38px 0 14px; padding-left: 14px; border-left: 4px solid var(--brand); }
.article-content h3 { font-size: 18px; margin: 28px 0 10px; }
.article-content p { margin-bottom: 16px; }
.article-content ul { margin: 0 0 16px 4px; }
.article-content ul li { padding-left: 20px; position: relative; margin-bottom: 8px; }
.article-content ul li::before { content: ""; position: absolute; left: 2px; top: 12px; width: 7px; height: 7px; border-radius: 50%; background: var(--brand); }
.article-content img { border-radius: var(--radius); margin: 20px auto; box-shadow: var(--shadow-sm); }
.article-content blockquote {
  margin: 22px 0; padding: 16px 22px; border-left: 4px solid var(--brand-100);
  background: var(--bg-soft); border-radius: 0 10px 10px 0; color: var(--ink-600);
}
.article-content table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14.5px; }
.article-content th, .article-content td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.article-content th { background: var(--brand-050); color: var(--ink-900); }
.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 44px; padding-top: 28px; border-top: 1px solid var(--line); }
.post-nav a, .post-nav span {
  display: block; padding: 14px 18px; border-radius: 12px; border: 1px solid var(--line);
  font-size: 14px; color: var(--ink-600); line-height: 1.6;
}
.post-nav a:hover { border-color: var(--brand-100); color: var(--brand); background: var(--brand-050); }
.post-nav .label { display: block; font-size: 12.5px; color: var(--ink-400); margin-bottom: 3px; }
.post-nav .next { text-align: right; }
.sidebar-widget { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; margin-bottom: 22px; }
.sidebar-widget h3 { font-size: 17px; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 2px solid var(--brand-050); position: relative; }
.sidebar-widget h3::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 42px; height: 2.5px; border-radius: 2px; background: var(--grad); }
.sidebar-widget li { margin-bottom: 12px; }
.sidebar-widget li a { font-size: 14px; color: var(--ink-600); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sidebar-widget li a:hover { color: var(--brand); }
.sidebar-cta { background: linear-gradient(135deg, #0050C8, #00A6FF); border: 0; color: #fff; text-align: center; }
.sidebar-cta h3 { color: #fff; border: 0; margin-bottom: 10px; }
.sidebar-cta p { font-size: 13.5px; color: rgba(255,255,255,.85); margin-bottom: 18px; }

/* ---------- 案例详情 ---------- */
.case-hero-band {
  background: linear-gradient(130deg, #071A3C 0%, #0B2550 60%, #0E3B8C 100%);
  color: #fff; padding: 64px 0 130px; position: relative;
}
.case-hero-band h1 { color: #fff; font-size: 32px; margin-bottom: 10px; }
.case-hero-band .sub { color: #A9C4EE; font-size: 15.5px; }
.case-hero-band .tags { display: flex; gap: 10px; margin-top: 18px; }
.case-hero-band .tags span { padding: 5px 14px; border-radius: 8px; font-size: 13px; background: rgba(0,140,255,.22); border: 1px solid rgba(120,180,255,.3); color: #BBD6FF; }
.case-metrics-band { margin-top: -76px; position: relative; z-index: 3; }
.case-metrics-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
  background: #fff; border-radius: var(--radius-lg); padding: 34px;
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
}
.case-metrics-grid .m { text-align: center; }
.case-metrics-grid .m .v { font-size: 34px; font-weight: 800; color: var(--brand); }
.case-metrics-grid .m .v small { font-size: 18px; }
.case-metrics-grid .m .k { font-size: 14px; color: var(--ink-400); margin-top: 4px; }
.case-section { margin-bottom: 40px; }
.case-section h2 { font-size: 23px; margin-bottom: 16px; padding-left: 14px; border-left: 4px solid var(--brand); }
.case-section .article-content { font-size: 15.5px; }

/* ---------- 关于我们 ---------- */
.about-intro { display: grid; grid-template-columns: 1.15fr 1fr; gap: 52px; align-items: center; }
.about-intro .rich { font-size: 16px; line-height: 1.95; color: #33445F; }
.about-intro .rich p { margin-bottom: 16px; }
.about-intro img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); aspect-ratio: 4/2.9; object-fit: cover; width: 100%; }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.value-card { text-align: center; padding: 38px 26px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line); transition: all .25s; }
.value-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.value-card .vi { width: 58px; height: 58px; margin: 0 auto 18px; border-radius: 16px; display: flex; align-items: center; justify-content: center; background: var(--brand-050); color: var(--brand); }
.value-card h3 { font-size: 18px; margin-bottom: 8px; }
.value-card p { font-size: 14px; color: var(--ink-400); }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.contact-card { text-align: center; padding: 34px 22px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); }
.contact-card .ci { width: 50px; height: 50px; margin: 0 auto 14px; border-radius: 14px; display: flex; align-items: center; justify-content: center; color: #fff; background: var(--grad); }
.contact-card h3 { font-size: 16.5px; margin-bottom: 6px; }
.contact-card p { font-size: 14.5px; color: var(--ink-600); }
.contact-card p b { color: var(--ink-900); }

/* ---------- 预约试用 ---------- */
.trial-layout { display: grid; grid-template-columns: 1.25fr 1fr; gap: 40px; align-items: start; }
.trial-card { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); border: 1px solid var(--line); padding: 44px 46px; }
.trial-card h2 { font-size: 24px; margin-bottom: 8px; }
.trial-card .hint { font-size: 14px; color: var(--ink-400); margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--ink-700); margin-bottom: 8px; }
.form-group label i { color: #E5484D; font-style: normal; margin-left: 2px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 16px; border-radius: 12px; border: 1.5px solid var(--line);
  font-size: 15px; font-family: inherit; color: var(--ink-900); background: #FBFCFE; transition: all .2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--brand); background: #fff; box-shadow: 0 0 0 4px rgba(0,122,255,.10);
}
.form-group textarea { min-height: 110px; resize: vertical; }
.form-msg { display: none; margin-top: 14px; padding: 12px 18px; border-radius: 10px; font-size: 14px; }
.form-msg.ok { display: block; background: #EAFBF1; color: #107C41; border: 1px solid #BCE8CD; }
.form-msg.err { display: block; background: #FEF0F0; color: #C2402A; border: 1px solid #F5C6C6; }
.trial-side .demo-card {
  background: linear-gradient(135deg, #071A3C, #0E3B8C); border-radius: var(--radius-lg);
  padding: 36px 34px; color: #fff; margin-bottom: 22px;
}
.trial-side .demo-card h3 { color: #fff; font-size: 20px; margin-bottom: 10px; }
.trial-side .demo-card p { font-size: 14px; color: #A9C4EE; margin-bottom: 18px; line-height: 1.8; }
.trial-side .demo-card .console { font-size: 14.5px; color: #6EC3FF; font-weight: 600; word-break: break-all; }
.trial-side .why-list { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px 30px; }
.trial-side .why-list h3 { font-size: 17px; margin-bottom: 16px; }
.trial-side .why-list li { display: flex; gap: 10px; font-size: 14.5px; color: var(--ink-600); margin-bottom: 12px; align-items: baseline; }
.trial-side .why-list li::before { content: "✓"; color: var(--brand); font-weight: 800; }
/* 联系信息悬挂缩进：标签与值拆成独立 flex 项，长文本换行后第二行与第一行文字起点对齐（同页脚 .fcontact 方案） */
.trial-side .why-list li.ct-item { gap: 2px; }
.trial-side .why-list li.ct-item::before { margin-right: 8px; }
.trial-side .why-list li.ct-item .ct-label { flex: none; }
.trial-side .why-list li.ct-item .ct-val { flex: 1; min-width: 0; overflow-wrap: anywhere; }

/* ---------- 产品页：模块分区 ---------- */
.flow-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; counter-reset: step; }
.flow-step { text-align: center; position: relative; padding: 0 12px; }
.flow-step .fi {
  width: 76px; height: 76px; margin: 0 auto 16px; border-radius: 22px; z-index: 2; position: relative;
  display: flex; align-items: center; justify-content: center; color: #fff; background: var(--grad);
  box-shadow: 0 10px 24px rgba(0,106,255,.26);
}
.flow-step:not(:last-child)::after {
  content: ""; position: absolute; top: 37px; left: calc(50% + 48px); width: calc(100% - 96px);
  height: 2px; background: repeating-linear-gradient(90deg, var(--brand-100) 0 10px, transparent 10px 18px);
}
.flow-step h4 { font-size: 16px; margin-bottom: 4px; }
.flow-step p { font-size: 13px; color: var(--ink-400); }
.module-block { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; padding: 40px 0; }
.module-block + .module-block { border-top: 1px dashed var(--line); }
.module-block .visual img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); aspect-ratio: 16/10; object-fit: cover; width: 100%; }
.module-block h3 { font-size: 25px; margin-bottom: 12px; }
.module-block .desc { margin-bottom: 20px; }
.module-block ul { display: grid; gap: 12px; }
.module-block ul li { display: flex; gap: 10px; align-items: baseline; font-size: 15px; color: var(--ink-600); }
.module-block ul li::before { content: "✓"; color: var(--brand); font-weight: 800; flex-shrink: 0; }
.module-block .visual { position: relative; }
.module-block .visual::after {
  content: ""; position: absolute; inset: auto -12px -12px auto; width: 45%; height: 55%;
  border-radius: var(--radius-lg); z-index: -1;
  background: linear-gradient(135deg, rgba(0,194,255,.25), rgba(0,106,255,.08));
}
.module-block.reverse .visual { order: 2; }
.cap-table { width: 100%; border-collapse: separate; border-spacing: 0; background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--line); font-size: 14.5px; }
.cap-table th { background: var(--navy-900); color: #fff; padding: 15px 18px; text-align: left; font-weight: 600; }
.cap-table td { padding: 13px 18px; border-top: 1px solid var(--line); color: var(--ink-600); }
.cap-table td:first-child { color: var(--ink-900); font-weight: 600; white-space: nowrap; }
.cap-table .yes { color: #107C41; font-weight: 700; }

/* ---------- 列表分页 ---------- */
.pager { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 38px; flex-wrap: wrap; }
.pg-btn { min-width: 38px; height: 38px; padding: 0 13px; border-radius: 9px; border: 1.5px solid var(--line);
  background: #fff; color: var(--ink-600); font-size: 14.5px; font-weight: 600; cursor: pointer; transition: all .18s; }
.pg-btn:hover:not(.disabled):not(.active) { border-color: var(--brand); color: var(--brand); }
.pg-btn.active { background: var(--brand); border-color: var(--brand); color: #fff; }
.pg-btn.disabled { opacity: .4; cursor: not-allowed; }
.pg-gap { color: #94a3b8; font-size: 15px; }
.pg-info { width: 100%; text-align: center; color: #94a3b8; font-size: 13px; margin-top: 2px; }

/* ---------- 解决方案页 ---------- */
.industry-section { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; padding: 46px 0; }
.industry-section + .industry-section { border-top: 1px dashed var(--line); }
.industry-section.reverse .visual { order: 2; }
.industry-section .visual img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); aspect-ratio: 16/10; object-fit: cover; width: 100%; }
.industry-section h3 { font-size: 25px; margin-bottom: 6px; }
.industry-section .sub { color: var(--brand); font-weight: 600; font-size: 15px; margin-bottom: 16px; }
.industry-section .pains { margin-bottom: 18px; }
.industry-section .pains li { display: flex; gap: 9px; font-size: 15px; margin-bottom: 9px; align-items: baseline; }
.industry-section .pains li::before { content: ""; flex-shrink: 0; width: 7px; height: 7px; border-radius: 50%; background: #E5484D; position: relative; top: -2px; }
.industry-section .values li { display: flex; gap: 9px; font-size: 15px; margin-bottom: 9px; color: var(--ink-700); align-items: baseline; }
.industry-section .values li::before { content: "✓"; color: var(--brand); font-weight: 800; }

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .module-grid { grid-template-columns: repeat(3, 1fr); }
  .why-grid, .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .scene-panel.active { grid-template-columns: 1fr; gap: 30px; }
  .industry-card { grid-template-columns: 1fr; }
  .industry-card .cover { min-height: 240px; }
  .article-layout { grid-template-columns: 1fr; }
  .flow-steps { grid-template-columns: repeat(3, 1fr); gap: 26px 0; }
  .flow-step:not(:last-child)::after { display: none; }
}
@media (max-width: 900px) {
  .header-cta .header-phone { display: none; }
  .main-nav {
    display: none; position: absolute; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; background: #fff; padding: 12px 20px 20px; gap: 2px;
    box-shadow: 0 16px 30px rgba(9,30,66,.10); border-top: 1px solid var(--line);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 14px; }
  .main-nav a.active::after { display: none; }
  .nav-toggle { display: block; margin-left: auto; }
  .card-grid { grid-template-columns: 1fr 1fr; }
  .about-intro, .trial-layout, .module-block, .industry-section { grid-template-columns: 1fr; }
  .module-block.reverse .visual, .industry-section.reverse .visual { order: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 38px; }
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 28px; }
}
@media (max-width: 620px) {
  .card-grid, .module-grid, .why-grid, .stats-grid, .value-grid, .contact-grid,
  .pain-points, .case-metrics-grid, .form-row, .post-nav { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 72px; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: 16px; }
  .article-card { padding: 30px 22px; }
  .article-card h1 { font-size: 23px; }
  .trial-card { padding: 30px 22px; }
  .float-side { right: 10px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .stats-band .num { font-size: 36px; }
  .scene-tabs .tab-btn { padding: 9px 16px; font-size: 14px; }
}