/* ============================================================
   湖南天下行信息科技有限公司官网
   蓝白教育信息化风格（参考联奕科技设计语言）
   ============================================================ */
:root {
  --blue: #2b7fff;
  --blue-deep: #1d5fd6;
  --blue-dark: #123e8c;
  --cyan: #00b8ff;
  --gold: #c9a96a;
  --ink: #17264a;
  --ink-2: #4a5b7c;
  --ink-3: #8a97b0;
  --bg: #ffffff;
  --bg-soft: #f3f8ff;
  --bg-soft-2: #eaf2fe;
  --line: #e3ecfa;
  --grad: linear-gradient(120deg, #2b7fff, #00b8ff);
  --shadow-sm: 0 4px 16px rgba(43, 127, 255, 0.08);
  --shadow-md: 0 12px 36px rgba(43, 127, 255, 0.14);
  --shadow-lg: 0 20px 60px rgba(29, 95, 214, 0.18);
  --radius: 18px;
  --nav-h: 76px;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
section { position: relative; scroll-margin-top: 80px; }
.container { width: min(1220px, 92%); margin: 0 auto; }

/* ---------- 通用 ---------- */
.sec-head { text-align: center; margin-bottom: 54px; }
.sec-tag {
  display: inline-block; font-size: 13px; font-weight: 600;
  letter-spacing: 3px; color: var(--blue);
  background: var(--bg-soft-2); border-radius: 999px;
  padding: 6px 20px; margin-bottom: 16px;
}
.sec-title { font-size: clamp(26px, 3.6vw, 38px); font-weight: 800; letter-spacing: 1px; color: var(--ink); }
.sec-title em {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.sec-sub { color: var(--ink-2); margin-top: 12px; font-size: 15.5px; }

.reveal { opacity: 0; transform: translateY(34px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .1s; } .reveal-d2 { transition-delay: .2s; }
.reveal-d3 { transition-delay: .3s; } .reveal-d4 { transition-delay: .4s; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 36px; border-radius: 999px;
  font-size: 15px; font-weight: 600; letter-spacing: 1px;
  cursor: pointer; border: none; transition: all .3s ease; font-family: var(--font);
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 10px 26px rgba(43, 127, 255, 0.35); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(43, 127, 255, 0.45); }
.btn-ghost { background: #fff; color: var(--blue); border: 1.5px solid rgba(43, 127, 255, 0.4); }
.btn-ghost:hover { border-color: var(--blue); background: var(--bg-soft); transform: translateY(-3px); }

/* ---------- 导航 ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h); display: flex; align-items: center;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: all .35s ease;
}
.navbar.scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 24px rgba(23, 38, 74, 0.07); }
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.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;
  font-weight: 800; font-size: 20px; color: #fff;
  box-shadow: 0 6px 16px rgba(43, 127, 255, 0.35);
}
.logo-text b { font-size: 17.5px; letter-spacing: 1px; display: block; color: var(--ink); }
.logo-text span { font-size: 10px; color: var(--ink-3); letter-spacing: 2.6px; }
.nav-links { display: flex; gap: 36px; align-items: center; }
.nav-links a { font-size: 15.5px; color: var(--ink-2); position: relative; padding: 6px 0; transition: color .25s; font-weight: 500; }
.nav-links a::after {
  content: ""; position: absolute; left: 50%; transform: translateX(-50%); bottom: -2px;
  height: 3px; width: 0; background: var(--grad); border-radius: 3px; transition: width .3s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--blue); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta {
  background: var(--grad); color: #fff !important; padding: 10px 24px !important;
  border-radius: 999px; font-weight: 600 !important;
  box-shadow: 0 8px 20px rgba(43, 127, 255, 0.35);
}
.nav-cta::after { display: none; }
.nav-cta:hover { transform: translateY(-2px); }
.hamburger { display: none; background: none; border: none; cursor: pointer; width: 40px; height: 40px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px auto; transition: .3s; border-radius: 2px; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  position: relative;
  display: flex; flex-direction: column; justify-content: center;
  padding-top: var(--nav-h);
  background:
    radial-gradient(900px 480px at 88% -8%, rgba(43, 127, 255, 0.12), transparent 60%),
    radial-gradient(700px 420px at -8% 108%, rgba(0, 184, 255, 0.10), transparent 60%),
    linear-gradient(180deg, #f6faff 0%, #ffffff 90%);
  overflow: hidden;
}
.hero-dots {
  position: absolute; inset: 0; opacity: .5;
  background-image: radial-gradient(rgba(43, 127, 255, 0.16) 1.5px, transparent 1.5px);
  background-size: 34px 34px;
  mask-image: radial-gradient(ellipse 70% 60% at 30% 40%, #000 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 30% 40%, #000 20%, transparent 70%);
}
.hero-inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.02fr 0.98fr; gap: 40px; align-items: center;
  padding: 60px 0 90px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: #fff; border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  color: var(--blue); padding: 8px 20px; border-radius: 999px;
  font-size: 13.5px; font-weight: 600; letter-spacing: 1.5px; margin-bottom: 26px;
}
.hero-badge i { width: 8px; height: 8px; border-radius: 50%; background: var(--grad); box-shadow: 0 0 10px rgba(43,127,255,.6); }
.hero h1 { font-size: clamp(32px, 4.6vw, 52px); font-weight: 800; line-height: 1.25; letter-spacing: 1px; }
.hero h1 .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { margin-top: 22px; max-width: 620px; color: var(--ink-2); font-size: clamp(14.5px, 1.4vw, 16.5px); }
.hero-actions { display: flex; gap: 16px; margin-top: 38px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-visual img {
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.9);
  animation: heroFloat 6s ease-in-out infinite;
}
@keyframes heroFloat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
.hero-chip {
  position: absolute; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(8px);
  border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow-md);
  padding: 12px 18px; display: flex; align-items: center; gap: 10px;
  font-size: 13.5px; font-weight: 600; color: var(--ink);
}
.hero-chip small { display: block; font-size: 11.5px; color: var(--ink-3); font-weight: 400; }
.hero-chip .dot { width: 34px; height: 34px; border-radius: 10px; background: var(--bg-soft-2); display: grid; place-items: center; color: var(--blue); flex: none; }
.chip-a { top: 8%; left: -30px; animation: chipFloat 5s ease-in-out infinite; }
.chip-b { bottom: 10%; right: -20px; animation: chipFloat 5s ease-in-out -2.5s infinite; }
@keyframes chipFloat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.hero-partners {
  position: relative; z-index: 2;
  border-top: 1px solid var(--line);
  padding: 22px 0 30px; background: rgba(255, 255, 255, 0.6);
}
.partner-row { display: flex; flex-wrap: wrap; gap: 12px 34px; align-items: center; justify-content: center; }
.partner-row span { font-size: 12.5px; color: var(--ink-3); letter-spacing: 2px; margin-right: 8px; }
.partner-row b { font-size: 15px; font-weight: 600; color: var(--ink-2); opacity: .8; transition: .3s; }
.partner-row b:hover { color: var(--blue); opacity: 1; }

/* ---------- 数据条 ---------- */
.stats { padding: 0 0 90px; margin-top: -58px; position: relative; z-index: 5; }
.stats-wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.stat-card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px 24px; text-align: center;
  box-shadow: var(--shadow-md);
  transition: transform .35s ease, box-shadow .35s ease;
}
.stat-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.stat-num { font-size: clamp(30px, 3.6vw, 44px); font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1.1; }
.stat-num small { font-size: .48em; margin-left: 2px; }
.stat-label { margin-top: 8px; color: var(--ink-2); font-size: 14px; letter-spacing: 1px; }

/* ---------- 产品服务 ---------- */
.products { padding: 100px 0; background: #fff; }
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.prod-card {
  position: relative; overflow: hidden;
  background: linear-gradient(170deg, #ffffff, #f7fbff);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 38px 30px 34px;
  transition: all .35s ease;
}
.prod-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .35s ease;
}
.prod-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); border-color: rgba(43, 127, 255, 0.35); }
.prod-card:hover::before { transform: scaleX(1); }
.prod-icon {
  width: 62px; height: 62px; border-radius: 16px;
  background: var(--bg-soft-2);
  display: grid; place-items: center; color: var(--blue);
  margin-bottom: 22px; transition: all .35s ease;
}
.prod-card:hover .prod-icon { background: var(--grad); color: #fff; box-shadow: 0 10px 24px rgba(43, 127, 255, 0.4); }
.prod-card h4 { font-size: 19px; margin-bottom: 4px; letter-spacing: .5px; }
.prod-card .en { font-size: 11px; color: var(--ink-3); letter-spacing: 2px; text-transform: uppercase; }
.prod-card > p { color: var(--ink-2); font-size: 14px; margin: 14px 0 18px; min-height: 72px; }
.prod-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.prod-tags span {
  font-size: 12px; color: var(--blue);
  background: var(--bg-soft); border: 1px solid var(--line);
  padding: 4px 12px; border-radius: 999px;
}

/* ---------- 解决方案 ---------- */
.solutions { padding: 100px 0; background: linear-gradient(180deg, var(--bg-soft) 0%, #fff 100%); }
.sol-wrap { display: grid; grid-template-columns: 300px 1fr; gap: 36px; align-items: start; }
.sol-menu { display: flex; flex-direction: column; gap: 12px; position: sticky; top: 100px; }
.sol-group-label {
  font-size: 12px; font-weight: 700; letter-spacing: 2px;
  color: var(--ink-3); padding: 14px 6px 4px;
}
.sol-group-label:first-child { padding-top: 0; }
.sol-group-label.hw { color: #b08d4f; }
.sol-tab {
  display: flex; align-items: center; gap: 12px;
  background: #fff; border: 1px solid var(--line);
  padding: 13px 18px; border-radius: 12px; cursor: pointer;
  font-size: 14.5px; font-weight: 600; color: var(--ink-2);
  transition: all .3s ease; text-align: left; font-family: var(--font);
}
.sol-tab .num {
  flex: none; width: 30px; height: 30px; border-radius: 8px;
  background: var(--bg-soft-2); color: var(--blue);
  display: grid; place-items: center; font-size: 12px; font-weight: 700;
  transition: all .3s ease;
}
.sol-tab.hw-tab { border-color: rgba(201, 169, 106, 0.45); }
.sol-tab.hw-tab .num { background: rgba(201, 169, 106, 0.14); color: #b08d4f; }
.sol-tab.hw-tab.active { background: linear-gradient(120deg, #c9a96a, #e0c088); box-shadow: 0 12px 28px rgba(201, 169, 106, 0.4); }
.sol-tab.hw-tab.active .num { background: rgba(255,255,255,0.25); color: #fff; }
.sol-cover-grad {
  position: relative; height: 320px; overflow: hidden;
  display: flex; align-items: flex-end;
}
.sol-cover-grad .g-icon {
  position: absolute; right: 40px; top: 50%; transform: translateY(-50%);
  color: rgba(255, 255, 255, 0.28);
}
.sol-cover-grad::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 45%, rgba(18, 45, 110, 0.35)); }
.sol-cover-grad .sol-hero-text { position: absolute; left: 34px; bottom: 26px; z-index: 2; color: #fff; }
.cg-1 { background: linear-gradient(135deg, #2b7fff, #00b8ff); }
.cg-2 { background: linear-gradient(135deg, #1d5fd6, #5aa0ff); }
.cg-3 { background: linear-gradient(135deg, #123e8c, #2b7fff); }
.cg-4 { background: linear-gradient(135deg, #0aa0c8, #2b7fff); }
.cg-hw { background: linear-gradient(135deg, #8a6b34, #c9a96a); }
.sol-diff {
  margin-top: 36px;
  background: linear-gradient(120deg, #17264a, #123e8c);
  border-radius: var(--radius);
  padding: 34px 40px;
  display: flex; align-items: center; gap: 24px;
  color: #fff; box-shadow: var(--shadow-lg);
}
.sol-diff .diff-ico {
  flex: none; width: 60px; height: 60px; border-radius: 16px;
  background: rgba(201, 169, 106, 0.2); border: 1px solid rgba(201, 169, 106, 0.5);
  display: grid; place-items: center; color: var(--gold);
}
.sol-diff h4 { font-size: 19px; letter-spacing: 1px; margin-bottom: 6px; }
.sol-diff h4 em { font-style: normal; color: var(--gold); }
.sol-diff p { font-size: 14px; color: #b9c6e2; }
.sol-tab:hover { border-color: rgba(43, 127, 255, 0.4); color: var(--blue); transform: translateX(4px); }
.sol-tab.active { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 12px 28px rgba(43, 127, 255, 0.35); }
.sol-tab.active .num { background: rgba(255, 255, 255, 0.22); color: #fff; }
.sol-panel { display: none; animation: fadeUp .5s ease; }
.sol-panel.active { display: block; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
.sol-card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-md);
}
.sol-hero { position: relative; height: 320px; overflow: hidden; }
.sol-hero img { width: 100%; height: 100%; object-fit: cover; }
.sol-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 45%, rgba(18, 45, 110, 0.55)); }
.sol-hero .sol-hero-text { position: absolute; left: 34px; bottom: 26px; z-index: 2; color: #fff; }
.sol-hero-text h3 { font-size: 26px; letter-spacing: 1px; }
.sol-hero-text p { font-size: 13.5px; opacity: .9; letter-spacing: 2px; }
.sol-body { padding: 32px 34px 36px; }
.sol-body > p { color: var(--ink-2); font-size: 15px; margin-bottom: 24px; }
.sol-feats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.sol-feat {
  display: flex; align-items: center; gap: 10px;
  background: var(--bg-soft); border: 1px solid var(--line);
  padding: 12px 16px; border-radius: 12px; font-size: 13.5px; font-weight: 500; color: var(--ink);
  transition: all .25s ease;
}
.sol-feat:hover { border-color: rgba(43, 127, 255, 0.4); background: #fff; box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.sol-feat i { flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--grad); }

/* ---------- 优秀案例 ---------- */
.cases { padding: 100px 0; background: #fff; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  border-radius: var(--radius); overflow: hidden;
  background: #fff; border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: all .35s ease;
}
.case-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); border-color: rgba(43, 127, 255, 0.3); }
.case-cover { height: 170px; overflow: hidden; position: relative; background: linear-gradient(135deg, #dceafe, #f2f8ff); }
.case-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.case-card:hover .case-cover img { transform: scale(1.07); }
.case-body { padding: 22px 24px 26px; }
.case-tag { font-size: 12px; color: var(--blue); font-weight: 600; letter-spacing: 1.5px; }
.case-body h4 { font-size: 18.5px; margin: 8px 0 10px; }
.case-body p { font-size: 13.5px; color: var(--ink-2); }
.case-meta { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; }
.case-meta span { font-size: 12px; padding: 4px 12px; border-radius: 999px; background: var(--bg-soft); border: 1px solid var(--line); color: var(--ink-2); }
.case-schools { margin-top: 64px; text-align: center; }
.case-schools h4 { font-size: 17px; color: var(--ink); letter-spacing: 3px; margin-bottom: 30px; font-weight: 700; }
.school-logo-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin-bottom: 26px; }
.school-logo {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 22px; display: grid; place-items: center;
  transition: all .3s ease; box-shadow: var(--shadow-sm);
}
.school-logo img { height: 30px; width: auto; }
.school-logo:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(43, 127, 255, 0.35); }
.school-wall { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 12px; }
.school-chip {
  font-size: 13.5px; color: var(--ink-2); padding: 8px 18px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg-soft);
  transition: all .3s;
}
.school-chip:hover { color: var(--blue); border-color: rgba(43, 127, 255, 0.4); background: #fff; }

/* ---------- 关于我们 ---------- */
.about { padding: 100px 0; background: linear-gradient(180deg, #fff, var(--bg-soft)); }
.about-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 60px; align-items: center; }
.about-text h3 { font-size: clamp(22px, 2.8vw, 32px); line-height: 1.4; margin-bottom: 20px; }
.about-text h3 em { font-style: normal; color: var(--blue); }
.about-text p { color: var(--ink-2); font-size: 15px; margin-bottom: 14px; text-align: justify; }
.about-text p b { color: var(--ink); }
.about-points { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.about-point {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: 13.5px; color: var(--ink-2);
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px;
  box-shadow: var(--shadow-sm);
}
.about-point svg { flex: none; margin-top: 3px; }
.about-photo { position: relative; }
.about-photo img { border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.about-photo::before {
  content: ""; position: absolute; inset: -16px auto auto -16px; width: 110px; height: 110px;
  border-top: 3px solid var(--blue); border-left: 3px solid var(--blue);
  border-radius: 18px 0 0 0; opacity: .5;
}
.about-photo::after {
  content: ""; position: absolute; inset: auto -16px -16px auto; width: 110px; height: 110px;
  border-bottom: 3px solid var(--cyan); border-right: 3px solid var(--cyan);
  border-radius: 0 0 18px 0; opacity: .5;
}
.photo-caption {
  position: absolute; left: 22px; bottom: 22px; z-index: 2;
  background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  padding: 12px 20px; border-radius: 12px; box-shadow: var(--shadow-md);
}
.photo-caption b { display: block; font-size: 14.5px; }
.photo-caption span { font-size: 12px; color: var(--ink-3); }

/* 企业文化 */
.culture { padding: 100px 0; background: var(--bg-soft); }
.culture-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.culture-card {
  position: relative; overflow: hidden;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 36px 30px;
  box-shadow: var(--shadow-sm);
  transition: transform .35s ease, box-shadow .35s ease;
}
.culture-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.culture-card h4 { font-size: 13px; color: var(--gold); letter-spacing: 3px; margin-bottom: 12px; font-weight: 700; }
.culture-card .big { font-size: 25px; font-weight: 800; letter-spacing: 2px; margin-bottom: 14px; color: var(--ink); }
.culture-card .big em { font-style: normal; color: var(--blue); }
.culture-card p { color: var(--ink-2); font-size: 14px; }
.values { margin-top: 56px; }
.values h4 { text-align: center; font-size: 17px; letter-spacing: 4px; color: var(--ink-2); margin-bottom: 28px; }
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.value-chip {
  text-align: center; padding: 18px 12px;
  background: #fff; border: 1px solid var(--line);
  border-radius: 12px; font-size: 15px; font-weight: 600; letter-spacing: 1px; color: var(--ink);
  box-shadow: var(--shadow-sm);
  transition: all .3s ease; cursor: default;
}
.value-chip:hover { background: var(--grad); color: #fff; box-shadow: 0 12px 28px rgba(43, 127, 255, 0.35); transform: translateY(-4px); }

/* 五大团队 + 服务承诺 */
.strength { padding: 100px 0; background: #fff; }
.team-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.team-card {
  background: linear-gradient(170deg, #fff, #f7fbff);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 18px; text-align: center;
  transition: all .35s ease;
}
.team-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); border-color: rgba(43, 127, 255, 0.35); }
.team-icon {
  width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 16px;
  background: var(--bg-soft-2);
  display: grid; place-items: center; color: var(--blue);
  transition: all .3s ease;
}
.team-card:hover .team-icon { background: var(--grad); color: #fff; }
.team-card h4 { font-size: 16.5px; margin-bottom: 8px; letter-spacing: 1px; }
.team-card p { font-size: 12.5px; color: var(--ink-2); line-height: 1.65; }
.promise-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 60px; }
.promise-card {
  text-align: center; padding: 34px 18px; border-radius: var(--radius);
  background: linear-gradient(160deg, #f2f8ff, #ffffff);
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  transition: all .3s ease;
}
.promise-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.promise-num { font-size: clamp(30px, 3.2vw, 42px); font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.promise-num small { font-size: .42em; }
.promise-card p { color: var(--ink-2); font-size: 13.5px; margin-top: 8px; }

/* 品牌墙 */
.brands { margin-top: 64px; }
.brands-wall { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.brand-chip {
  padding: 10px 22px; border-radius: 10px;
  border: 1px solid var(--line); background: #fff;
  color: var(--ink-2); font-size: 14px; font-weight: 500; letter-spacing: 1px;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
}
.brand-chip:hover { color: var(--blue); border-color: rgba(43, 127, 255, 0.4); transform: translateY(-3px); }
.brand-chip.gold { color: #a5814a; border-color: rgba(201, 169, 106, 0.5); background: rgba(201, 169, 106, 0.08); font-weight: 600; }

/* ---------- 资质荣誉 ---------- */
.honors { padding: 100px 0; background: linear-gradient(180deg, #fff, var(--bg-soft)); }
.honor-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: start; }
.honor-photos { display: grid; gap: 20px; }
.honor-photo {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid rgba(201, 169, 106, 0.4); box-shadow: var(--shadow-md);
}
.honor-photo img { transition: transform .6s ease; }
.honor-photo:hover img { transform: scale(1.04); }
.honor-photo .cap {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 26px 20px 14px; font-size: 13.5px; color: #fff;
  background: linear-gradient(transparent, rgba(20, 30, 60, 0.8));
  letter-spacing: 1px;
}
.honor-list li {
  display: flex; gap: 16px; align-items: flex-start;
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 22px 24px; margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
}
.honor-list li:hover { transform: translateX(6px); box-shadow: var(--shadow-md); border-color: rgba(201, 169, 106, 0.5); }
.honor-ico {
  flex: none; width: 46px; height: 46px; border-radius: 12px;
  background: rgba(201, 169, 106, 0.12); border: 1px solid rgba(201, 169, 106, 0.4);
  display: grid; place-items: center; color: #b08d4f;
}
.honor-list b { display: block; font-size: 15.5px; margin-bottom: 4px; letter-spacing: .5px; }
.honor-list p { font-size: 13px; color: var(--ink-2); }

/* ---------- 团队风采 ---------- */
.gallery { padding: 100px 0; background: #fff; }
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 210px; gap: 16px; }
.gallery-item { position: relative; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); cursor: pointer; box-shadow: var(--shadow-sm); }
.gallery-item:first-child { grid-column: span 2; grid-row: span 2; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.gallery-item:hover img { transform: scale(1.07); }
.gallery-item .g-cap {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 30px 18px 14px;
  background: linear-gradient(transparent, rgba(18, 45, 110, 0.85));
  font-size: 13px; color: #fff; letter-spacing: 1px;
  opacity: 0; transform: translateY(8px); transition: all .4s ease;
}
.gallery-item:hover .g-cap { opacity: 1; transform: none; }

/* ---------- 联系我们 ---------- */
.contact { padding: 100px 0; background: linear-gradient(180deg, #fff, var(--bg-soft)); }
.contact-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 56px; }
.contact-info h3 { font-size: clamp(22px, 2.6vw, 30px); margin-bottom: 14px; }
.contact-info > p { color: var(--ink-2); font-size: 15px; margin-bottom: 30px; }
.contact-item {
  display: flex; gap: 16px; align-items: flex-start;
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 18px 20px; margin-bottom: 14px; box-shadow: var(--shadow-sm);
}
.contact-ico {
  flex: none; width: 46px; height: 46px; border-radius: 12px;
  background: var(--bg-soft-2);
  display: grid; place-items: center; color: var(--blue);
}
.contact-item b { display: block; font-size: 12.5px; color: var(--ink-3); letter-spacing: 2px; margin-bottom: 3px; font-weight: 500; }
.contact-item span { font-size: 17px; font-weight: 700; letter-spacing: .5px; }
.contact-form {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 40px 36px;
  box-shadow: var(--shadow-md);
}
.contact-form h4 { font-size: 20px; margin-bottom: 6px; }
.contact-form > p { color: var(--ink-2); font-size: 13.5px; margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 8px; letter-spacing: 1px; font-weight: 500; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 13px 16px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 10px; color: var(--ink);
  font-size: 14.5px; font-family: var(--font);
  transition: border-color .3s, box-shadow .3s, background .3s;
  outline: none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--blue); background: #fff; box-shadow: 0 0 0 4px rgba(43, 127, 255, 0.12);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-submit { width: 100%; font-size: 16px; }
.form-note { margin-top: 14px; font-size: 12.5px; color: var(--ink-3); text-align: center; }

/* ---------- 悬浮按钮 ---------- */
.float-bar { position: fixed; right: 22px; top: 50%; transform: translateY(-50%); z-index: 900; display: flex; flex-direction: column; gap: 12px; }
.float-btn {
  width: 96px; background: #fff; border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow-md); padding: 12px 6px;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  font-size: 12px; color: var(--ink-2); cursor: pointer; transition: all .3s ease;
  font-family: var(--font);
}
.float-btn svg { color: var(--blue); }
.float-btn:hover { background: var(--grad); color: #fff; transform: translateX(-4px); box-shadow: var(--shadow-lg); }
.float-btn:hover svg { color: #fff; }

/* ---------- Footer ---------- */
.footer { background: #101f3c; color: #b9c6e2; padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr 1.1fr; gap: 40px; padding-bottom: 46px; }
.footer h5 { font-size: 15.5px; letter-spacing: 2px; margin-bottom: 18px; color: #fff; }
.footer p, .footer li { font-size: 13.5px; line-height: 2.1; }
.footer li a:hover { color: var(--cyan); }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.footer-brand .logo-text b { color: #fff; }
.footer-brand .logo-text span { color: #7e8db0; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0; text-align: center;
  font-size: 12.5px; color: #7e8db0;
}
.footer-bottom b { color: var(--gold); font-weight: 500; }

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 900;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--grad); border: none; cursor: pointer;
  display: grid; place-items: center; color: #fff;
  box-shadow: 0 10px 26px rgba(43, 127, 255, 0.45);
  opacity: 0; pointer-events: none; transform: translateY(16px);
  transition: all .35s ease;
}
.back-top.show { opacity: 1; pointer-events: auto; transform: none; }
.back-top:hover { transform: translateY(-4px); }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .hero-chip { display: none; }
}
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 44px; padding: 50px 0 60px; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .sol-wrap { grid-template-columns: 1fr; }
  .sol-menu { flex-direction: row; overflow-x: auto; position: static; padding-bottom: 8px; }
  .sol-menu::-webkit-scrollbar { height: 4px; }
  .sol-group-label { flex: none; align-self: center; padding: 0 4px; white-space: nowrap; }
  .sol-tab { flex: none; padding: 12px 18px; font-size: 14px; }
  .sol-tab .num { width: 28px; height: 28px; font-size: 12px; }
  .sol-diff { flex-direction: column; text-align: center; padding: 30px 24px; }
  .sol-cover-grad { height: 240px; }
  .about-grid, .honor-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .case-grid { grid-template-columns: 1fr; }
  .culture-grid { grid-template-columns: 1fr; }
  .stats-wrap { grid-template-columns: repeat(2, 1fr); }
  .promise-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .float-bar { display: none; }
}
@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: rgba(255, 255, 255, 0.98); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(23, 38, 74, 0.1);
    max-height: 0; overflow: hidden; transition: max-height .4s ease;
  }
  .nav-links.open { max-height: 520px; }
  .nav-links a { width: 100%; text-align: center; padding: 15px 0; border-bottom: 1px solid var(--line); }
  .nav-links a::after { display: none; }
  .nav-cta { margin: 14px auto 18px; width: auto !important; padding: 10px 34px !important; }
  .hamburger { display: block; }
  .prod-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-feats { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .about-points { grid-template-columns: 1fr; }
  .gallery-grid { grid-auto-rows: 170px; }
  .gallery-item:first-child { grid-column: span 2; grid-row: span 1; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .sec-head { margin-bottom: 40px; }
}
@media (max-width: 480px) {
  .stats-wrap { gap: 12px; }
  .promise-grid { grid-template-columns: 1fr; }
  .sol-feats { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .sol-hero { height: 220px; }
}

/* ============================================================
   子页面通用（产品/方案/案例/关于）
   ============================================================ */
.page-banner {
  position: relative;
  padding: calc(var(--nav-h) + 76px) 0 84px;
  background:
    radial-gradient(800px 400px at 85% 0%, rgba(43, 127, 255, 0.16), transparent 60%),
    radial-gradient(600px 380px at 5% 100%, rgba(0, 184, 255, 0.10), transparent 60%),
    linear-gradient(150deg, #f2f8ff 0%, #e8f1fe 100%);
  overflow: hidden;
}
.page-banner::before {
  content: ""; position: absolute; inset: 0; opacity: .45;
  background-image: radial-gradient(rgba(43, 127, 255, 0.18) 1.5px, transparent 1.5px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 60% 70% at 70% 30%, #000 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 60% 70% at 70% 30%, #000 20%, transparent 70%);
}
.page-banner .container { position: relative; z-index: 2; }
.crumb { font-size: 13px; color: var(--ink-3); letter-spacing: 1px; margin-bottom: 16px; }
.crumb a:hover { color: var(--blue); }
.crumb i { font-style: normal; margin: 0 8px; color: var(--line); }
.page-banner h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; letter-spacing: 1.5px; }
.page-banner h1 em {
  font-style: normal;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.page-banner .banner-sub { margin-top: 14px; color: var(--ink-2); font-size: 15.5px; max-width: 720px; }
.banner-badge {
  display: inline-block; font-size: 12.5px; font-weight: 600; letter-spacing: 2px;
  color: #b08d4f; background: rgba(201, 169, 106, 0.12);
  border: 1px solid rgba(201, 169, 106, 0.4);
  padding: 5px 16px; border-radius: 999px; margin-left: 12px; vertical-align: middle;
}

/* 产品/方案 列表页卡片 */
.list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; padding: 80px 0 100px; }
.list-card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm);
  transition: all .35s ease;
}
.list-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); border-color: rgba(43, 127, 255, 0.35); }
.list-cover { position: relative; height: 180px; overflow: hidden; }
.list-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.list-card:hover .list-cover img { transform: scale(1.06); }
.list-cover.grad { display: flex; align-items: center; justify-content: center; }
.list-cover.grad .g-icon { color: rgba(255, 255, 255, 0.35); }
.list-num {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  background: rgba(255, 255, 255, 0.92); color: var(--blue);
  font-size: 12px; font-weight: 800; letter-spacing: 1px;
  padding: 4px 12px; border-radius: 999px; box-shadow: var(--shadow-sm);
}
.list-hw-badge {
  position: absolute; top: 14px; right: 14px; z-index: 2;
  background: linear-gradient(120deg, #c9a96a, #e0c088); color: #fff;
  font-size: 11.5px; font-weight: 700; letter-spacing: 1px;
  padding: 4px 12px; border-radius: 999px; box-shadow: 0 6px 16px rgba(201, 169, 106, 0.45);
}
.list-body { padding: 24px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.list-body h4 { font-size: 18px; letter-spacing: .5px; }
.list-body .en { font-size: 11px; color: var(--ink-3); letter-spacing: 2px; text-transform: uppercase; margin-top: 3px; }
.list-body p { color: var(--ink-2); font-size: 13.5px; margin: 12px 0 18px; flex: 1; }
.list-link { display: inline-flex; align-items: center; gap: 6px; color: var(--blue); font-size: 14px; font-weight: 600; }
.list-link svg { transition: transform .3s; }
.list-card:hover .list-link svg { transform: translateX(4px); }

/* 列表分组标题 */
.list-group-head { padding: 70px 0 0; display: flex; align-items: baseline; gap: 14px; }
.list-group-head h3 { font-size: 22px; font-weight: 800; letter-spacing: 1px; }
.list-group-head span { color: var(--ink-3); font-size: 13.5px; letter-spacing: 1px; }
.list-group-head.hw h3 { color: #b08d4f; }
.list-grid + .list-group-head { padding-top: 20px; }

/* 详情页 */
.detail-overview { padding: 80px 0; background: #fff; }
.detail-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.detail-text h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin-bottom: 8px; }
.detail-text .en { font-size: 12.5px; color: var(--ink-3); letter-spacing: 3px; text-transform: uppercase; }
.detail-text .ov { color: var(--ink-2); font-size: 15px; margin-top: 20px; text-align: justify; }
.detail-media { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); border: 1px solid var(--line); }
.detail-media.grad-cover { height: 340px; display: flex; align-items: center; justify-content: center; }
.detail-media.grad-cover .g-icon { color: rgba(255, 255, 255, 0.32); }

.detail-section { padding: 80px 0; }
.detail-section.soft { background: var(--bg-soft); }
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.scene-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow-sm);
  transition: all .3s ease;
}
.scene-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(43, 127, 255, 0.35); }
.scene-card .s-num {
  display: inline-grid; place-items: center;
  width: 40px; height: 40px; border-radius: 12px;
  background: var(--bg-soft-2); color: var(--blue);
  font-weight: 800; font-size: 15px; margin-bottom: 16px;
}
.scene-card:hover .s-num { background: var(--grad); color: #fff; }
.scene-card h4 { font-size: 17px; margin-bottom: 10px; }
.scene-card p { font-size: 13.5px; color: var(--ink-2); }
.scene-card.hw-scene .s-num { background: rgba(201, 169, 106, 0.14); color: #b08d4f; }
.scene-card.hw-scene:hover .s-num { background: linear-gradient(120deg, #c9a96a, #e0c088); color: #fff; }

/* 需求分析 & 建设愿景 */
.nv-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.nv-card {
  border-radius: var(--radius); padding: 36px 32px;
  background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}
.nv-card.vision { background: linear-gradient(140deg, #17264a, #123e8c); border: none; color: #fff; box-shadow: var(--shadow-lg); }
.nv-card h3 { font-size: 20px; font-weight: 800; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.nv-card h3 .tag-ico { width: 34px; height: 34px; border-radius: 10px; background: var(--bg-soft-2); color: var(--blue); display: grid; place-items: center; flex: none; }
.nv-card.vision h3 .tag-ico { background: rgba(255, 255, 255, 0.14); color: var(--gold); }
.nv-card li {
  position: relative; padding: 12px 0 12px 30px; font-size: 14.5px; color: var(--ink-2);
  border-bottom: 1px dashed var(--line);
}
.nv-card li:last-child { border-bottom: none; }
.nv-card li::before {
  content: ""; position: absolute; left: 2px; top: 20px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--grad);
}
.nv-card.vision li { color: #cdd9f2; border-bottom-color: rgba(255, 255, 255, 0.14); }
.nv-card.vision li::before { background: var(--gold); }

/* CTA 横幅 */
.cta-banner {
  position: relative; overflow: hidden;
  padding: 80px 0; background: linear-gradient(120deg, #17264a, #1d5fd6 70%, #00b8ff 130%);
  color: #fff; text-align: center;
}
.cta-banner::before {
  content: ""; position: absolute; inset: 0; opacity: .18;
  background-image: radial-gradient(rgba(255, 255, 255, 0.5) 1.5px, transparent 1.5px);
  background-size: 30px 30px;
}
.cta-banner .container { position: relative; z-index: 2; }
.cta-banner h2 { font-size: clamp(24px, 3.2vw, 36px); font-weight: 800; letter-spacing: 1.5px; }
.cta-banner p { margin: 14px auto 32px; color: #cdd9f2; font-size: 15.5px; max-width: 640px; }
.cta-banner .btn-ghost { background: rgba(255, 255, 255, 0.1); color: #fff; border-color: rgba(255, 255, 255, 0.45); }
.cta-banner .btn-ghost:hover { background: rgba(255, 255, 255, 0.2); border-color: #fff; }
.cta-banner .btn-light { background: #fff; color: var(--blue); box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25); }
.cta-banner .btn-light:hover { transform: translateY(-3px); }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* 详情页相关产品/方案 */
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.related-card {
  display: flex; align-items: center; gap: 16px;
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 22px 24px; box-shadow: var(--shadow-sm); transition: all .3s ease;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(43, 127, 255, 0.4); }
.related-card .r-num {
  flex: none; width: 44px; height: 44px; border-radius: 12px;
  background: var(--bg-soft-2); color: var(--blue);
  display: grid; place-items: center; font-weight: 800; font-size: 14px;
}
.related-card b { display: block; font-size: 15.5px; }
.related-card span { font-size: 12px; color: var(--ink-3); letter-spacing: 1px; }

@media (max-width: 1024px) {
  .list-grid, .scene-grid, .related-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-grid { grid-template-columns: 1fr; gap: 36px; }
  .nv-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .list-grid, .scene-grid, .related-grid { grid-template-columns: 1fr; }
  .page-banner { padding: calc(var(--nav-h) + 50px) 0 60px; }
}

/* ---------- 首页专用 ---------- */
.sec-more { text-align: center; margin-top: 48px; }
.home-sols .list-grid { padding: 0; }
.home-sols .sol-diff { margin-top: 46px; }
@media (max-width: 900px) {
  .sec-more { margin-top: 36px; }
}

/* ---------- 真实 Logo ---------- */
.logo-img { height: 40px; width: auto; display: block; }
@media (max-width: 768px) { .logo-img { height: 30px; } }

/* ---------- 导航二级下拉菜单 ---------- */
.nav-item { position: relative; display: flex; align-items: center; }
.nav-item .caret { margin-left: 5px; vertical-align: -1px; transition: transform .3s; }
.nav-item:hover .caret { transform: rotate(180deg); }
.nav-drop {
  position: absolute; top: calc(100% + 16px); left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 260px; background: #fff; border-radius: 16px;
  border: 1px solid var(--line); box-shadow: 0 24px 60px rgba(23, 38, 74, 0.14);
  padding: 14px; opacity: 0; visibility: hidden; transition: all .28s ease; z-index: 1001;
}
.nav-drop::before { content: ""; position: absolute; top: -16px; left: 0; right: 0; height: 16px; }
.nav-item:hover .nav-drop { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.nav-drop a { display: block; padding: 10px 14px !important; border-radius: 10px; font-size: 14px; color: var(--ink-2); white-space: nowrap; }
.nav-drop a::after { display: none; }
.nav-drop a:hover { background: var(--bg-soft); color: var(--blue); }
.nav-item.wide .nav-drop { min-width: 640px; }
.drop-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.drop-hw-label {
  margin: 10px 6px 6px; padding-top: 12px;
  border-top: 1px dashed rgba(201, 169, 106, 0.45);
  font-size: 12px; letter-spacing: 2.5px; color: #b08d4f; font-weight: 700;
}
.nav-drop a.hw { color: #a5814a; font-weight: 600; }
.nav-drop a.hw:hover { background: rgba(201, 169, 106, 0.1); color: #8f6d35; }
.drop-all {
  margin-top: 10px; padding-top: 12px !important; text-align: center;
  color: var(--blue) !important; font-weight: 600; border-top: 1px solid var(--line); border-radius: 0 !important;
}
@media (max-width: 768px) {
  .nav-item { flex-direction: column; width: 100%; align-items: stretch; }
  .nav-item .nav-link { width: 100%; text-align: center; }
  .nav-drop, .nav-item.wide .nav-drop {
    position: static; transform: none; min-width: 0; width: 100%;
    opacity: 1; visibility: visible; box-shadow: none; border: none;
    border-radius: 0; padding: 0; display: none; background: var(--bg-soft);
  }
  .nav-drop::before { display: none; }
  .nav-item.open .nav-drop { display: block; }
  .nav-item.open .caret { transform: rotate(180deg); }
  .drop-grid { grid-template-columns: 1fr; }
  .nav-drop a { border-bottom: 1px solid var(--line); border-radius: 0 !important; text-align: center; padding: 13px 0 !important; }
  .drop-hw-label { text-align: center; margin: 4px 0 0; }
  .nav-links.open { max-height: calc(100vh - var(--nav-h)); overflow-y: auto; }
}

/* ---------- 软著证书卡片 ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cert-card {
  position: relative; background: linear-gradient(165deg, #fff, #f6faff);
  border: 1px solid var(--line); border-radius: 16px; padding: 26px 24px 22px;
  transition: all .35s ease; overflow: hidden;
}
.cert-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .4s ease;
}
.cert-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(43, 127, 255, 0.35); }
.cert-card:hover::before { transform: scaleX(1); }
.cert-ico {
  width: 46px; height: 46px; border-radius: 12px; background: var(--bg-soft-2);
  display: grid; place-items: center; color: var(--blue); margin-bottom: 16px;
}
.cert-card h5 { font-size: 15.5px; line-height: 1.5; color: var(--ink); margin-bottom: 10px; letter-spacing: .3px; }
.cert-no { font-size: 12px; color: var(--ink-3); letter-spacing: .8px; }
.cert-org { margin-top: 12px; padding-top: 10px; border-top: 1px dashed var(--line); font-size: 11.5px; color: var(--ink-3); letter-spacing: 1px; }
@media (max-width: 900px) { .cert-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .cert-grid { grid-template-columns: 1fr; } }

/* ---------- 荣誉列表三列布局（软著版） ---------- */
.honor-list.cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; list-style: none; padding: 0; }
.honor-list.cols li { margin-bottom: 0; height: 100%; }
.honor-list.cols li:hover { transform: translateY(-6px); }
@media (max-width: 900px) { .honor-list.cols { grid-template-columns: 1fr; } }