/* =========================================================
   歆珀智能 XINPO TECH — 企业官网全局样式
   视觉体系：科技橙白 / 现代工业风
   ========================================================= */

/* ---------- CSS 变量 ---------- */
:root {
  --brand: #ff6b00;
  --brand-dark: #e85d00;
  --brand-deep: #c94e00;
  --brand-soft: #fff1e6;
  --brand-glow: rgba(255, 107, 0, .14);
  --amber: #ffb300;
  --ink: #171c28;
  --ink-2: #2b3244;
  --text: #4a5468;
  --muted: #8492a8;
  --line: #e8ecf2;
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --bg-dark: #10141f;
  --bg-dark-2: #171c2a;
  --white: #ffffff;
  --ok: #16a34a;
  --grad: linear-gradient(120deg, #ff6b00 0%, #ff8b1f 55%, #ffb300 100%);
  --grad-soft: linear-gradient(180deg, #fff5ec 0%, #ffffff 100%);
  --shadow-sm: 0 2px 10px rgba(23, 28, 40, .05);
  --shadow-md: 0 10px 30px rgba(23, 28, 40, .08);
  --shadow-lg: 0 24px 60px rgba(23, 28, 40, .14);
  --shadow-brand: 0 12px 30px rgba(255, 107, 0, .28);
  --radius: 14px;
  --radius-lg: 20px;
  --container: 1200px;
  --header-h: 76px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 14px; }
::selection { background: var(--brand); color: #fff; }

/* ---------- 布局 ---------- */
.container { width: min(var(--container), 92%); margin-inline: auto; }
.section { padding: 92px 0; }
.section-alt { background: var(--bg-alt); }
.section-line { border-top: 1px solid var(--line); }
.grad-bg { background: var(--grad); }

/* ---------- 通用标题 ---------- */
.sec-head { max-width: 760px; margin-bottom: 56px; }
.sec-head.center { margin-inline: auto; text-align: center; }
.sec-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; color: var(--brand);
  background: var(--brand-soft); border: 1px solid rgba(255,107,0,.18);
  padding: 5px 14px; border-radius: 999px; margin-bottom: 18px;
  letter-spacing: .08em;
}
.sec-eyebrow::before { content: ""; width: 16px; height: 2px; background: var(--brand); border-radius: 2px; }
.sec-title { font-size: 36px; line-height: 1.3; color: var(--ink); font-weight: 800; letter-spacing: .01em; }
.sec-title em { font-style: normal; color: var(--brand); }
.sec-sub { margin-top: 16px; font-size: 16px; color: var(--text); }
.sec-sub b { color: var(--ink-2); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 999px; font-size: 15px; font-weight: 600;
  border: 1px solid transparent; transition: all .25s ease; white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--grad); color: #fff; box-shadow: var(--shadow-brand); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(255,107,0,.36); }
.btn-ghost { background: transparent; color: var(--ink-2); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-soft); }
.btn-white { background: #fff; color: var(--brand-dark); box-shadow: var(--shadow-md); }
.btn-white:hover { transform: translateY(-2px); }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-sm { padding: 8px 18px; font-size: 13px; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--bg-dark); color: #aab3c5; font-size: 13px;
  position: relative; z-index: 60;
}
.topbar .container { display: flex; align-items: center; justify-content: space-between; height: 38px; }
.topbar a { color: #dbe1ec; }
.topbar a:hover { color: var(--brand); }
.topbar .tb-left { display: flex; gap: 26px; align-items: center; }
.topbar .tb-left span { display: inline-flex; align-items: center; gap: 7px; }
.topbar svg { width: 14px; height: 14px; color: #ff8b1f; }
.topbar .tb-right { display: flex; gap: 22px; align-items: center; }
.topbar .tb-right a { color: #aab3c5; transition: color .2s; }

/* ---------- 头部导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.9); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s;
}
.header.scrolled { box-shadow: var(--shadow-sm); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 44px; height: 44px; border-radius: 12px; background: var(--grad);
  display: grid; place-items: center; color: #fff; flex: none;
  box-shadow: 0 6px 16px rgba(255,107,0,.35);
}
.logo-mark svg { width: 26px; height: 26px; }
.logo-text { line-height: 1.2; }
.logo-text b { display: block; font-size: 20px; font-weight: 800; color: var(--ink); letter-spacing: .02em; }
.logo-text b em { color: var(--brand); font-style: normal; }
.logo-text small { font-size: 10.5px; color: var(--muted); letter-spacing: .24em; font-weight: 600; }

.nav { display: flex; align-items: center; gap: 6px; }
.nav a.nav-link {
  padding: 9px 16px; border-radius: 999px; font-size: 15px; font-weight: 500;
  color: var(--ink-2); transition: all .22s; position: relative;
}
.nav a.nav-link:hover { color: var(--brand); background: var(--brand-soft); }
.nav a.nav-link.active { color: var(--brand); background: var(--brand-soft); font-weight: 700; }
.header-cta { display: flex; align-items: center; gap: 14px; }
.header-phone { display: flex; align-items: center; gap: 9px; color: var(--ink); font-weight: 800; font-size: 16px; }
.header-phone svg { width: 20px; height: 20px; color: var(--brand); }
.header-phone small { display: block; font-size: 11px; font-weight: 500; color: var(--muted); line-height: 1.2; }

/* 汉堡菜单 */
.nav-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; border-radius: 10px; position: relative; z-index: 80; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px auto; border-radius: 2px; transition: all .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background:
  radial-gradient(900px 500px at 88% -10%, rgba(255,139,31,.18), transparent 60%),
  radial-gradient(700px 420px at -10% 110%, rgba(255,107,0,.10), transparent 55%),
  linear-gradient(180deg, #fff 0%, #fdf6ef 100%); padding: 86px 0 72px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid rgba(255,107,0,.22); color: var(--brand-dark);
  font-size: 13px; font-weight: 600; padding: 6px 16px; border-radius: 999px;
  box-shadow: var(--shadow-sm); margin-bottom: 22px;
}
.hero-tag .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 4px var(--brand-glow); }
.hero h1 { font-size: 52px; line-height: 1.16; color: var(--ink); font-weight: 800; letter-spacing: .01em; }
.hero h1 em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { margin: 22px 0 30px; font-size: 17px; color: var(--text); max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero-meta { display: flex; gap: 30px; margin-top: 40px; flex-wrap: wrap; }
.hero-meta .hm { display: flex; align-items: center; gap: 12px; }
.hero-meta .hm svg { width: 38px; height: 38px; padding: 9px; background: var(--brand-soft); border-radius: 10px; color: var(--brand); }
.hero-meta .hm b { display: block; color: var(--ink); font-size: 17px; line-height: 1.3; }
.hero-meta .hm span { font-size: 12.5px; color: var(--muted); }

/* Hero 插画区 */
.hero-visual { position: relative; }
.hero-card-wrap { position: relative; }
.hero-illust {
  background: linear-gradient(150deg, #fff 0%, #fff6ec 100%);
  border: 1px solid #ffe3c7; border-radius: 24px;
  box-shadow: var(--shadow-lg); padding: 18px 18px 0;
}
.float-card {
  position: absolute; background: #fff; border-radius: 14px;
  box-shadow: var(--shadow-md); padding: 12px 16px; display: flex; align-items: center; gap: 12px;
  border: 1px solid rgba(255,255,255,.6); animation: floaty 5s ease-in-out infinite;
}
.float-card .fc-ic { width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; flex: none; }
.float-card b { display: block; color: var(--ink); font-size: 14.5px; line-height: 1.35; }
.float-card small { font-size: 12px; color: var(--muted); }
.fc-1 { top: 6%; left: -54px; }
.fc-1 .fc-ic { background: var(--brand-soft); color: var(--brand); }
.fc-2 { bottom: 14%; right: -40px; animation-delay: 1.6s; }
.fc-2 .fc-ic { background: #e9f7ee; color: var(--ok); }
.fc-3 { bottom: -26px; left: 10%; animation-delay: .8s; }
.fc-3 .fc-ic { background: #eef3ff; color: #3566e0; }
.fc-3 .fc-ic svg { width: 20px; height: 20px; }
.fc-ic svg { width: 20px; height: 20px; }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

/* 统计数字条 */
.stats-strip { margin-top: -1px; background: var(--bg-dark); position: relative; z-index: 5; }
.stats-strip .grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-cell { padding: 40px 20px; text-align: center; border-left: 1px solid rgba(255,255,255,.07); }
.stat-cell:first-child { border-left: 0; }
.stat-cell b { display: block; font-size: 40px; font-weight: 800; color: #fff; font-family: "DIN Alternate", "Segoe UI", sans-serif; letter-spacing: .01em; }
.stat-cell b i { font-style: normal; font-size: 22px; color: var(--brand); margin-left: 2px; }
.stat-cell span { font-size: 14px; color: #96a0b5; margin-top: 4px; display: block; }
.stat-cell[data-count] b { will-change: contents; }

/* ---------- 通用网格卡片 ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; transition: all .3s ease; position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(255,107,0,.3); }
.card.ghost { background: var(--bg-dark); border-color: rgba(255,255,255,.08); }
.card .card-ic {
  width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 20px;
  background: var(--brand-soft); color: var(--brand);
}
.card .card-ic svg { width: 28px; height: 28px; }
.card h3 { font-size: 19px; color: var(--ink); font-weight: 700; margin-bottom: 10px; }
.card p { font-size: 14px; color: var(--text); }
.card .card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--brand); }
.card .card-link svg { width: 14px; height: 14px; transition: transform .25s; }
.card:hover .card-link svg { transform: translateX(4px); }

/* 特性点 */
.feature-li { display: flex; gap: 14px; padding: 12px 0; align-items: flex-start; }
.feature-li .fi { flex: none; width: 34px; height: 34px; border-radius: 9px; background: var(--brand-soft); color: var(--brand); display: grid; place-items: center; margin-top: 3px; }
.feature-li .fi svg { width: 17px; height: 17px; }
.feature-li b { color: var(--ink); font-size: 15px; display: block; }
.feature-li p { font-size: 13.5px; color: var(--text); }

/* 编号徽标 */
.num-badge {
  font-size: 30px; font-weight: 800; line-height: 1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  opacity: .9; font-family: "DIN Alternate","Segoe UI",sans-serif;
}

/* ---------- 分屏内容(文字+图) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split.reverse .split-media { order: 2; }
.split-media { position: relative; }
.split-media .panel {
  background: linear-gradient(160deg, #171c2a, #10141f); border-radius: var(--radius-lg);
  padding: 14px; position: relative; overflow: hidden; color: #fff;
}
.panel-screen { background: #fff; border-radius: 12px; padding: 26px; color: var(--text); min-height: 320px; }
.panel-gridline { position: absolute; inset: 0; opacity: .5; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 34px 34px; }
.kpi-float { position: absolute; background: #fff; border-radius: 16px; box-shadow: var(--shadow-lg); padding: 18px 20px; width: 220px; z-index: 3; }
.kpi-float b { display: block; font-size: 30px; font-weight: 800; color: var(--ink); line-height: 1.2; }
.kpi-float b i { font-style: normal; color: var(--brand); }
.kpi-float span { font-size: 12.5px; color: var(--muted); }
.kpi-float .kf-bar { height: 6px; border-radius: 3px; background: #f0f2f7; margin-top: 12px; overflow: hidden; }
.kpi-float .kf-bar i { display: block; height: 100%; background: var(--grad); border-radius: 3px; }
.kpi-1 { top: -30px; right: -14px; }
.kpi-2 { bottom: -34px; left: -16px; }

/* 标签组 */
.tag-wrap { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.tag { background: var(--bg-alt); border: 1px solid var(--line); padding: 6px 14px; border-radius: 999px; font-size: 13px; color: var(--ink-2); font-weight: 500; }

/* ---------- 产品 Tab ---------- */
.p-tabs { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 44px; }
.p-tab { padding: 11px 22px; border-radius: 999px; border: 1px solid var(--line); background: #fff; font-size: 14.5px; font-weight: 600; color: var(--ink-2); transition: all .25s; }
.p-tab:hover { color: var(--brand); border-color: rgba(255,107,0,.4); }
.p-tab.active { background: var(--grad); color: #fff; border-color: transparent; box-shadow: var(--shadow-brand); }
.p-pane { display: none; }
.p-pane.active { display: block; animation: fadeUp .5s ease; }
.p-feature {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px;
}
.pf-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: all .3s;
}
.pf-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(255,107,0,.3); }
.pf-visual { position: relative; aspect-ratio: 16/9; display: grid; place-items: center; overflow: hidden;
  background:
    radial-gradient(340px 180px at 85% 10%, rgba(255,139,31,.16), transparent 60%),
    linear-gradient(180deg, #fbfcfd 0%, #eef1f6 100%); }
.pf-visual svg { width: 78%; height: 78%; }
.pf-tag { position: absolute; top: 14px; left: 14px; background: rgba(255,255,255,.9); backdrop-filter: blur(6px); color: var(--brand-dark); font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px; border: 1px solid rgba(255,107,0,.25); }
.pf-tag.hot { background: var(--grad); color: #fff; border: 0; }
.pf-body { padding: 22px 22px 24px; }
.pf-body h4 { font-size: 17px; color: var(--ink); margin-bottom: 8px; font-weight: 700; }
.pf-body p { font-size: 13.5px; color: var(--text); min-height: 40px; }
.pf-meta { display: flex; gap: 16px; margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line); }
.pf-meta span { font-size: 12.5px; color: var(--muted); display: inline-flex; align-items: center; gap: 6px; }
.pf-meta svg { width: 14px; height: 14px; color: var(--brand); }

/* ---------- 行业方案卡 ---------- */
.sol-card { position: relative; padding: 32px; }
.sol-card .sol-num { position: absolute; top: 24px; right: 28px; font-size: 44px; font-weight: 800; color: #f0f2f7; line-height: 1; font-family: "DIN Alternate", sans-serif; }
.sol-card h3 { font-size: 20px; }
.sol-card .sol-sub { font-size: 13px; color: var(--brand); font-weight: 700; margin-bottom: 12px; letter-spacing: .05em; }
.sol-card:hover .sol-num { color: var(--brand-soft); }
.sol-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.sol-tags span { font-size: 12px; background: var(--bg-alt); border-radius: 6px; padding: 4px 10px; color: var(--ink-2); font-weight: 500; }

/* ---------- 案例卡 ---------- */
.case-card { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: all .3s; display: flex; flex-direction: column; }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(255,107,0,.3); }
.case-thumb { aspect-ratio: 16/8.4; display: grid; place-items: center; background:
  radial-gradient(400px 200px at 70% 20%, rgba(255,139,31,.15), transparent 60%),
  linear-gradient(180deg, #fbfcfd, #eef1f6); position: relative; overflow: hidden; }
.case-thumb svg { width: 82%; height: 82%; }
.case-industry { position: absolute; left: 16px; top: 16px; background: rgba(16,20,31,.82); backdrop-filter: blur(6px); color: #fff; font-size: 12px; padding: 5px 14px; border-radius: 999px; }
.case-body { padding: 24px 26px 26px; flex: 1; display: flex; flex-direction: column; }
.case-body h3 { font-size: 19px; color: var(--ink); margin-bottom: 6px; }
.case-body .case-loc { font-size: 12.5px; color: var(--muted); display: flex; align-items: center; gap: 5px; margin-bottom: 10px; }
.case-body .case-loc svg { width: 13px; height: 13px; color: var(--brand); }
.case-body p { font-size: 13.5px; flex: 1; }
.case-results { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--line); }
.case-results b { display: block; font-size: 20px; color: var(--brand-dark); font-weight: 800; line-height: 1.2; }
.case-results span { font-size: 12px; color: var(--muted); }

/* 大案例带图（首页） */
.case-spot { border-radius: var(--radius-lg); overflow: hidden; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.case-spot .cs-media { position: relative; padding: 40px 40px 0; background: linear-gradient(180deg, #f7f9fc, #fff); display: grid; place-items: center; border-bottom: 1px solid var(--line); }
.case-spot .cs-media svg { width: 70%; }
.case-spot .cs-media video.case-video { width: 100%; max-width: 920px; display: block; border-radius: 14px 14px 0 0; background: #000; box-shadow: 0 12px 32px rgba(23,28,40,.14); }
.case-spot .cs-body { padding: 34px 40px 40px; }

/* ---------- 流程 / 时间线 ---------- */
.process-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
.process-row::before { content: ""; position: absolute; top: 28px; left: 8%; right: 8%; height: 2px; background: linear-gradient(90deg, var(--brand) 0 25%, rgba(255,107,0,.25) 25% 100%); }
.step { text-align: center; padding: 0 18px; position: relative; }
.step .step-dot { width: 56px; height: 56px; border-radius: 50%; background: #fff; border: 2px dashed rgba(255,107,0,.4); display: grid; place-items: center; margin: 0 auto 18px; position: relative; z-index: 2; box-shadow: var(--shadow-sm); }
.step .step-dot span { width: 40px; height: 40px; border-radius: 50%; background: var(--grad); color: #fff; font-weight: 800; display: grid; place-items: center; font-size: 16px; }
.step h4 { font-size: 16.5px; color: var(--ink); margin-bottom: 8px; }
.step p { font-size: 13px; color: var(--text); }

/* 时间线（关于页） */
.timeline { position: relative; max-width: 820px; margin-inline: auto; padding: 10px 0; }
.timeline::before { content: ""; position: absolute; left: 118px; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--brand), rgba(255,107,0,.12)); }
.tl-item { display: grid; grid-template-columns: 118px 1fr; gap: 0; padding: 22px 0; position: relative; }
.tl-year { font-size: 19px; font-weight: 800; color: var(--brand); padding-right: 34px; text-align: right; font-family: "DIN Alternate","Segoe UI",sans-serif; padding-top: 2px; }
.tl-year::after { content: ""; position: absolute; left: 113px; top: 30px; width: 12px; height: 12px; border-radius: 50%; background: #fff; border: 3px solid var(--brand); }
.tl-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; margin-left: 30px; transition: all .3s; }
.tl-item:hover .tl-box { border-color: rgba(255,107,0,.35); box-shadow: var(--shadow-sm); }
.tl-box b { color: var(--ink); font-size: 16px; display: block; margin-bottom: 5px; }
.tl-box p { font-size: 13.5px; }

/* ---------- 公司资质 icon grid ---------- */
.license-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.license-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 10px; text-align: center; transition: all .3s; }
.license-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.license-item .lic-ic { width: 46px; height: 46px; margin: 0 auto 12px; background: var(--brand-soft); border-radius: 12px; display: grid; place-items: center; color: var(--brand); }
.license-item .lic-ic svg { width: 24px; height: 24px; }
.license-item b { font-size: 13.5px; color: var(--ink); display: block; line-height: 1.45; }
.license-item span { font-size: 11.5px; color: var(--muted); }

/* ---------- Logo 墙 ---------- */
.logo-wall { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px; }
.logo-chip { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 16px 28px; font-weight: 800; color: #8a94a8; font-size: 18px; letter-spacing: .02em; display: inline-flex; align-items: center; gap: 10px; transition: all .3s; }
.logo-chip::before { content: ""; width: 10px; height: 10px; border-radius: 3px; background: var(--grad); opacity: .0; transition: opacity .3s; }
.logo-chip:hover { color: var(--ink); box-shadow: var(--shadow-sm); border-color: rgba(255,107,0,.3); }
.logo-chip:hover::before { opacity: 1; }
.logo-chip.tone { background: var(--bg-dark); border-color: rgba(255,255,255,.08); color: #7d8799; }

/* ---------- 引言 / 双栏文本 ---------- */
.quote-band { position: relative; overflow: hidden; color: #fff; }
.quote-band::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(700px 300px at 90% 10%, rgba(255,139,31,.25), transparent 60%), radial-gradient(600px 300px at 5% 90%, rgba(255,107,0,.16), transparent 60%); }
.quote-band .container { position: relative; z-index: 2; text-align: center; }
.quote-band .qb-mark { font-size: 64px; line-height: 1; color: rgba(255,255,255,.25); font-family: Georgia, serif; }
.quote-band h2 { font-size: 32px; font-weight: 800; color: #fff; max-width: 900px; margin: 10px auto 18px; line-height: 1.45; }
.quote-band h2 em { font-style: normal; color: #ffb300; }
.quote-band p { color: #aeb6c8; max-width: 720px; margin: 0 auto; font-size: 15.5px; }

/* ---------- CTA 大横幅 ---------- */
.cta-band { position: relative; overflow: hidden; background: var(--bg-dark); border-radius: var(--radius-lg); padding: 66px 60px; display: flex; align-items: center; justify-content: space-between; gap: 30px; color: #fff; }
.cta-band::before { content: ""; position: absolute; inset: 0; background: radial-gradient(640px 260px at 100% 0%, rgba(255,107,0,.28), transparent 60%); }
.cta-band .container { position: relative; z-index: 2; }
.cta-band h2 { font-size: 30px; font-weight: 800; margin-bottom: 12px; }
.cta-band p { color: #aeb6c8; max-width: 600px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

/* ---------- 联系方式区块 ---------- */
.contact-line { display: flex; align-items: center; gap: 14px; padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.07); }
.contact-line:last-child { border-bottom: 0; }
.contact-line .cl-ic { width: 44px; height: 44px; border-radius: 12px; background: rgba(255,107,0,.16); color: #ff8b1f; display: grid; place-items: center; flex: none; }
.contact-line .cl-ic svg { width: 21px; height: 21px; }
.contact-line b { display: block; color: #fff; font-size: 15.5px; line-height: 1.5; font-weight: 600; }
.contact-line span { font-size: 13px; color: #96a0b5; }

/* ---------- 表单 ---------- */
.form-card { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 38px; border: 1px solid var(--line); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink-2); margin-bottom: 7px; }
.form-group label i { color: var(--brand); font-style: normal; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; border: 1.5px solid var(--line); border-radius: 11px; padding: 12px 15px;
  font-size: 14.5px; color: var(--ink); background: #fcfdfe; transition: all .22s; outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--brand); background: #fff; box-shadow: 0 0 0 4px var(--brand-glow); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 10px; display: flex; align-items: center; gap: 6px; }
.form-tip { display: none; font-size: 13px; margin-top: 14px; padding: 12px 16px; border-radius: 10px; align-items: center; gap: 8px; }
.form-tip.show { display: flex; }
.form-tip.ok { background: #eaf7ef; color: #166534; border: 1px solid #bbe6cb; }
.form-tip.err { background: #fdefef; color: #991b1b; border: 1px solid #f5c6c6; }

/* ---------- 面包屑 / 页头横幅 ---------- */
.page-hero { background:
  radial-gradient(800px 380px at 90% -20%, rgba(255,139,31,.2), transparent 60%),
  linear-gradient(180deg, #fdf6ef 0%, #fff 100%); border-bottom: 1px solid var(--line); padding: 62px 0 54px; text-align: center; }
.page-hero h1 { font-size: 40px; font-weight: 800; color: var(--ink); }
.page-hero h1 em { font-style: normal; color: var(--brand); }
.page-hero p { margin: 14px auto 0; color: var(--text); max-width: 640px; font-size: 15.5px; }
.breadcrumb { margin-top: 20px; display: flex; justify-content: center; align-items: center; gap: 8px; font-size: 13.5px; color: var(--muted); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .sep { color: #c7cedb; }
.breadcrumb b { color: var(--ink-2); font-weight: 600; }

/* ---------- 次级产品明细卡(产品页大卡) ---------- */
.prod-block { display: grid; grid-template-columns: .9fr 1.1fr; gap: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 34px; transition: all .3s; }
.prod-block:hover { box-shadow: var(--shadow-md); }
.prod-block .pb-media { background: linear-gradient(180deg, #fbfcfd, #eef1f6); display: grid; place-items: center; padding: 30px; position: relative; overflow: hidden; }
.prod-block .pb-media svg { width: 88%; max-height: 300px; }
.prod-block .pb-body { padding: 40px 42px; }
.prod-block .pb-body h3 { font-size: 24px; color: var(--ink); margin-bottom: 6px; }
.prod-block .pb-en { font-size: 12.5px; color: var(--muted); letter-spacing: .12em; margin-bottom: 18px; display: block; }
.prod-block .pb-body > p { font-size: 14.5px; margin-bottom: 18px; }
.pb-features { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; margin-bottom: 22px; }
.pb-features li { display: flex; gap: 9px; align-items: flex-start; font-size: 13.8px; color: var(--ink-2); }
.pb-features li::before { content: ""; flex: none; width: 7px; height: 7px; border-radius: 50%; background: var(--brand); margin-top: 8px; box-shadow: 0 0 0 3px var(--brand-glow); }
.pb-spec { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-bottom: 24px; }
.pb-spec div { background: var(--bg-alt); border-radius: 10px; padding: 10px 12px; text-align: center; }
.pb-spec b { display: block; font-size: 17px; color: var(--ink); font-weight: 800; }
.pb-spec span { font-size: 11.5px; color: var(--muted); }

/* ---------- 价值指标（方案页） ---------- */
.value-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
.value-cell { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; text-align: center; }
.value-cell b { display: block; font-size: 34px; font-weight: 800; color: var(--ink); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.value-cell b i { font-style: normal; font-size: 18px; }
.value-cell span { font-size: 13.5px; color: var(--muted); }

/* ---------- 服务保障(关于页) ---------- */
.guarantee-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
.guard-item { text-align: center; padding: 10px 12px; }
.guard-item .g-ic { width: 66px; height: 66px; margin: 0 auto 16px; border-radius: 50%; background: #fff; box-shadow: var(--shadow-md); display: grid; place-items: center; color: var(--brand); }
.guard-item .g-ic svg { width: 30px; height: 30px; }
.guard-item b { display: block; font-size: 16px; color: var(--ink); margin-bottom: 6px; }
.guard-item p { font-size: 13px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-dark); color: #93a0b6; font-size: 14px; }
.footer-main { padding: 68px 0 44px; display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 46px; }
.footer h4 { color: #fff; font-size: 15.5px; font-weight: 700; margin-bottom: 22px; position: relative; padding-bottom: 12px; }
.footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 30px; height: 3px; border-radius: 2px; background: var(--grad); }
.footer .f-brand p { margin-top: 16px; font-size: 13.5px; line-height: 1.9; }
.footer ul li { margin-bottom: 11px; }
.footer ul a { transition: all .2s; position: relative; }
.footer ul a:hover { color: #ff8b1f; padding-left: 6px; }
.footer .f-contact li { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 15px; }
.footer .f-contact svg { width: 17px; height: 17px; color: #ff8b1f; flex: none; margin-top: 3px; }
.footer .f-contact b { color: #d8deea; font-weight: 600; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.07); padding: 22px 0; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; }
.footer-bottom a { color: #93a0b6; }
.footer-bottom a:hover { color: #ff8b1f; }
.f-logo .logo-text b { color: #fff; }
.f-logo .logo-text small { color: #6b7689; }

/* 返回顶部 */
.to-top { position: fixed; right: 26px; bottom: 30px; width: 46px; height: 46px; border-radius: 13px; background: var(--bg-dark); color: #fff; display: grid; place-items: center; z-index: 40; opacity: 0; visibility: hidden; transform: translateY(14px); transition: all .3s; box-shadow: var(--shadow-md); }
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--brand); }
.to-top svg { width: 19px; height: 19px; }

/* ---------- 动画 ---------- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; } .reveal-d2 { transition-delay: .16s; } .reveal-d3 { transition-delay: .24s; } .reveal-d4 { transition-delay: .32s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero h1 { font-size: 42px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .p-feature { grid-template-columns: repeat(2, 1fr); }
  .pb-spec { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 960px) {
  .hero-grid, .split { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { order: -1; max-width: 620px; margin-inline: auto; }
  .split.reverse .split-media { order: 0; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .process-row { grid-template-columns: repeat(2, 1fr); gap: 30px 10px; }
  .process-row::before { display: none; }
  .value-grid, .guarantee-row { grid-template-columns: repeat(2, 1fr); }
  .prod-block { grid-template-columns: 1fr; }
  .license-grid { grid-template-columns: repeat(3, 1fr); }
  .stats-strip .grid { grid-template-columns: repeat(2, 1fr); }
  .stat-cell:nth-child(3) { border-left: 0; }
}
@media (max-width: 760px) {
  .section { padding: 64px 0; }
  .sec-title { font-size: 27px; }
  .hero h1 { font-size: 33px; }
  .page-hero h1 { font-size: 30px; }
  .topbar .tb-right { display: none; }
  .topbar .tb-left { gap: 14px; font-size: 12px; }
  .nav-toggle { display: block; }
  .nav {
    position: fixed; inset: 0; background: rgba(255,255,255,.98); backdrop-filter: blur(10px);
    flex-direction: column; justify-content: center; gap: 8px; z-index: 70;
    opacity: 0; visibility: hidden; transition: all .3s; padding: 20px;
  }
  .nav.open { opacity: 1; visibility: visible; }
  .nav a.nav-link { font-size: 20px; padding: 12px 22px; }
  .header-cta .btn { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .p-feature { grid-template-columns: 1fr; }
  .hero-meta { gap: 18px; }
  .fc-1 { left: -8px; } .fc-2 { right: -6px; }
  .form-row { grid-template-columns: 1fr; }
  .timeline::before { left: 14px; }
  .tl-item { grid-template-columns: 1fr; }
  .tl-year { text-align: left; padding: 0 0 0 40px; }
  .tl-year::after { left: 8px; }
  .tl-box { margin-left: 40px; }
  .cta-band { padding: 44px 28px; flex-direction: column; text-align: center; align-items: flex-start; }
  .quote-band h2 { font-size: 25px; }
  .pb-features { grid-template-columns: 1fr; }
  .value-grid, .guarantee-row { grid-template-columns: 1fr 1fr; }
  .license-grid { grid-template-columns: repeat(2, 1fr); }
  .kpi-float { width: 180px; }
  .kpi-1 { top: -20px; right: -6px; } .kpi-2 { bottom: -20px; left: -6px; }
  .footer-main { grid-template-columns: 1fr; gap: 34px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* 无障碍 & 动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ==================== 移动端适配增强（覆盖页面内联栅格样式） ==================== */
@media (max-width: 960px) {
  .case-detail { grid-template-columns: 1fr !important; }
}

@media (max-width: 760px) {
  /* 1. 所有内联 grid 一律降为单列（联系页双栏/首页案例速览/解决方案分栏等） */
  [style*="grid-template-columns"] { grid-template-columns: 1fr !important; }

  /* 2. 卡片组保留两列更好看的，单独覆盖回两列 */
  .case-metrics, .logo-wall, .value-grid, .guarantee-row { grid-template-columns: repeat(2, 1fr) !important; gap: 14px !important; }
  .logo-wall > div { padding: 16px 10px !important; }
  .metric-card { padding: 16px 12px !important; }
  .metric-card b { font-size: 24px !important; }

  /* 3. 案例详情卡片 */
  .case-detail { padding: 24px 18px !important; gap: 18px !important; }
  .case-detail::before { width: 100% !important; height: 5px !important; }
  .case-detail-meta { flex-direction: column !important; gap: 8px !important; }
  .case-stat-row { flex-wrap: wrap; gap: 16px 28px; }
  .stat b { font-size: 20px !important; }

  /* 4. 首页案例速览（视频区） */
  .case-spot .cs-media { padding: 18px 18px 0 !important; }
  .cs-body { padding: 24px 18px 28px !important; }
  .cs-body h3 { font-size: 20px !important; }
  .case-results { border-left: 0 !important; border-top: 1px dashed var(--line); padding-left: 0 !important; padding-top: 18px !important; }

  /* 5. 联系页与卡片 */
  .card[style] { padding: 20px 18px !important; }
  .contact-line { padding: 12px 0; }

  /* 6. 标题字号收敛 */
  h2[style*="font-size"] { font-size: 24px !important; }
  h3[style*="font-size"] { font-size: 20px !important; }
  .sec-title em { display: inline; }
  .page-hero p { font-size: 14px; }

  /* 7. 按钮与标签 */
  .cta-actions { width: 100%; }
  .cta-actions .btn { width: 100%; justify-content: center; }
  .tag-wrap { flex-wrap: wrap; gap: 8px !important; }
  .tag { padding: 8px 14px !important; font-size: 13px !important; }

  /* 8. 页脚微调 */
  .footer-main > div { min-width: 0; }
  .footer-bottom { gap: 6px; }
}

/* ==================== PPT 实拍素材整合 ==================== */
.prod-block .pb-media img { width: 88%; max-height: 300px; object-fit: contain; }
.case-detail-visual img { width: 100%; border-radius: 12px; display: block; }
.base-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.base-card { background: #fff; border: 1px solid #eee; border-radius: 16px; overflow: hidden; transition: .25s; }
.base-card:hover { border-color: #ff6b00; transform: translateY(-3px); box-shadow: 0 14px 30px rgba(255,107,0,.1); }
.base-card img { width: 100%; height: 230px; object-fit: cover; display: block; }
.base-card img.fit-contain { object-fit: contain; background: #fff; padding: 14px; box-sizing: border-box; }
.base-card figcaption { padding: 16px 18px; display: flex; flex-direction: column; gap: 3px; }
.base-card figcaption b { font-size: 15.5px; color: var(--ink); }
.base-card figcaption span { font-size: 13px; color: var(--muted); }
@media (max-width: 960px) { .base-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 760px) { .base-grid { grid-template-columns: 1fr; } .base-card img { height: 220px; } }

/* 页头热线号码（手机端收缩，避免挤压导航） */
@media (max-width: 760px) {
  .header-phone { font-size: 13.5px !important; gap: 6px; }
  .header-phone small { font-size: 10px; }
  .header-phone svg { width: 17px; height: 17px; }
}
@media (max-width: 380px) {
  .header-phone small { display: none; }
}