/* ============================================================
   7uNeon 主题 · 共享设计系统
   深色霓虹科技风 / 自适应 / 供 web·cart·clientarea 三区共用
   ============================================================ */

:root {
  /* 色彩 */
  --bg-0: #05070f;
  --bg-1: #0a0e1f;
  --bg-2: #0d1530;
  --bg-3: #101c3d;
  --panel: rgba(15, 26, 62, .55);
  --panel-2: rgba(19, 33, 78, .72);
  --stroke: rgba(0, 229, 255, .16);
  --stroke-2: rgba(0, 229, 255, .32);
  --cyan: #00e5ff;
  --blue: #3d7bff;
  --purple: #a855f7;
  --pink: #ff3d8b;
  --green: #2bffb0;
  --gold: #ffc24d;
  --text: #eaf2ff;
  --text-dim: #8ba3d9;
  --text-faint: #5a719d;
  --danger: #ff4d6d;
  --ok: #2bffb0;

  /* 渐变 */
  --grad: linear-gradient(120deg, #00e5ff 0%, #3d7bff 52%, #a855f7 100%);
  --grad-soft: linear-gradient(120deg, rgba(0,229,255,.16), rgba(61,123,255,.12) 55%, rgba(168,85,247,.16));
  --grad-pink: linear-gradient(120deg, #ff3d8b, #a855f7);

  /* 字体 */
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-num: "DIN Alternate", "Rajdhani", "Bahnschrift", "Segoe UI", sans-serif;

  /* 布局 */
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 18px 50px rgba(0, 0, 0, .5);
  --glow-cyan: 0 0 18px rgba(0, 229, 255, .35);
  --glow-blue: 0 0 22px rgba(61, 123, 255, .4);
  --glow-purple: 0 0 22px rgba(168, 85, 247, .4);
  --nav-h: 72px;
  --container: 1240px;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg-0);
  line-height: 1.6;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--cyan); text-decoration: none; transition: color .25s; }
a:hover { color: #7af2ff; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; line-height: 1.3; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }

::selection { background: rgba(0, 229, 255, .3); }

/* 滚动条 */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: var(--bg-0); }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, #1d3a7a, #0e1a3a); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, #2a55a8, #152a5c); }

/* ---------- 布局容器 ---------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------- 科技背景网格 + 光斑 ---------- */
.neon-bg {
  position: relative;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(61, 123, 255, .14), transparent 60%),
    radial-gradient(900px 500px at 10% 10%, rgba(168, 85, 247, .12), transparent 60%),
    radial-gradient(700px 700px at 50% 120%, rgba(0, 229, 255, .10), transparent 60%),
    var(--bg-0);
}
.neon-bg::before {
  content: "";
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 229, 255, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, .035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 75%);
}
.neon-bg > * { position: relative; z-index: 1; }

/* 浮动光球 */
.orb {
  position: absolute; border-radius: 50%; filter: blur(70px); opacity: .5; pointer-events: none;
  animation: orbFloat 12s ease-in-out infinite alternate;
}
.orb-cyan { background: #00e5ff; width: 320px; height: 320px; top: 8%; left: -80px; }
.orb-purple { background: #a855f7; width: 380px; height: 380px; top: 40%; right: -120px; animation-delay: -4s; }
.orb-blue { background: #3d7bff; width: 280px; height: 280px; bottom: 4%; left: 30%; animation-delay: -8s; }
@keyframes orbFloat {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(40px, -40px, 0) scale(1.12); }
}

/* ---------- 玻璃卡片 ---------- */
.glass {
  background: var(--panel);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.glass:hover {
  border-color: var(--stroke-2);
  box-shadow: 0 0 28px rgba(0, 229, 255, .16), var(--shadow);
  transform: translateY(-4px);
}

/* ---------- 霓虹渐变文字 ---------- */
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 26px; border-radius: 12px;
  font-size: 15px; font-weight: 600; letter-spacing: .02em;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: all .25s; user-select: none;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary {
  background: var(--grad); color: #06122e;
  box-shadow: var(--glow-cyan);
}
.btn-primary:hover { box-shadow: 0 0 30px rgba(0, 229, 255, .55); transform: translateY(-2px); color: #06122e; }
.btn-ghost {
  background: rgba(0, 229, 255, .06); color: var(--cyan);
  border-color: var(--stroke-2);
}
.btn-ghost:hover { background: rgba(0, 229, 255, .14); box-shadow: var(--glow-cyan); color: #7af2ff; }
.btn-purple {
  background: linear-gradient(120deg, #a855f7, #7c3aed); color: #fff;
  box-shadow: var(--glow-purple);
}
.btn-purple:hover { box-shadow: 0 0 30px rgba(168, 85, 247, .6); transform: translateY(-2px); }
.btn-danger {
  background: rgba(255, 77, 109, .12); color: var(--danger); border-color: rgba(255, 77, 109, .35);
}
.btn-danger:hover { background: rgba(255, 77, 109, .22); }
.btn-lg { height: 52px; padding: 0 36px; font-size: 16px; border-radius: 14px; }
.btn-sm { height: 34px; padding: 0 16px; font-size: 13px; border-radius: 9px; }
.btn-block { width: 100%; }

/* ---------- 章节标题 ---------- */
.sec-title { text-align: center; margin-bottom: 52px; }
.sec-title .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600; letter-spacing: .28em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 14px;
}
.sec-title .eyebrow::before, .sec-title .eyebrow::after {
  content: ""; width: 34px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan));
}
.sec-title .eyebrow::after { background: linear-gradient(90deg, var(--cyan), transparent); }
.sec-title h2 { font-size: clamp(26px, 4vw, 40px); letter-spacing: .02em; }
.sec-title .sub { color: var(--text-dim); margin-top: 14px; font-size: 15px; max-width: 640px; margin-inline: auto; }

/* ---------- 徽标/标签 ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 600; line-height: 1;
  padding: 5px 10px; border-radius: 999px;
  border: 1px solid var(--stroke-2); color: var(--cyan);
  background: rgba(0, 229, 255, .08);
}
.badge-hot { color: #ff8fb0; border-color: rgba(255, 61, 139, .4); background: rgba(255, 61, 139, .1); }
.badge-new { color: var(--green); border-color: rgba(43, 255, 176, .4); background: rgba(43, 255, 176, .08); }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 999;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(6, 10, 24, .72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--stroke);
}
.nav-inner { display: flex; align-items: center; gap: 32px; width: 100%; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; letter-spacing: .04em; }
.nav-logo .logo-mark {
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--grad); display: grid; place-items: center;
  color: #06122e; font-size: 17px; font-weight: 900;
  box-shadow: var(--glow-cyan);
}
.nav-menu { display: flex; gap: 4px; margin-left: auto; }
.nav-menu a {
  position: relative; color: var(--text-dim); font-size: 15px;
  padding: 8px 14px; border-radius: 8px;
}
.nav-menu a:hover, .nav-menu a.active { color: var(--text); background: rgba(0, 229, 255, .08); }
.nav-menu a.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px; height: 2px;
  background: var(--grad); border-radius: 2px; box-shadow: var(--glow-cyan);
}
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-burger { display: none; background: none; border: none; color: var(--text); font-size: 22px; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 90px 0 70px; text-align: center; }
.hero .hero-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: 999px; font-size: 13px;
  border: 1px solid var(--stroke-2); color: var(--cyan);
  background: rgba(0, 229, 255, .06); margin-bottom: 26px;
}
.hero h1 { font-size: clamp(38px, 6.4vw, 76px); font-weight: 800; letter-spacing: .01em; line-height: 1.08; }
.hero .lead { color: var(--text-dim); font-size: clamp(15px, 2vw, 18px); max-width: 720px; margin: 24px auto 0; }
.hero .hero-actions { display: flex; gap: 16px; justify-content: center; margin-top: 38px; flex-wrap: wrap; }
.hero .hero-stats {
  display: flex; gap: 44px; justify-content: center; flex-wrap: wrap;
  margin-top: 56px; padding-top: 34px;
  border-top: 1px solid rgba(0, 229, 255, .1);
}
.hero .stat .num { font-family: var(--font-num); font-size: 34px; font-weight: 700; }
.hero .stat .lbl { color: var(--text-dim); font-size: 13px; margin-top: 4px; }

/* 粒子画布 */
#particles { position: absolute; inset: 0; z-index: 0; pointer-events: none; }

/* ---------- 产品卡片网格 ---------- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.prod-card { padding: 26px; position: relative; overflow: hidden; }
.prod-card .prod-icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  font-size: 24px; margin-bottom: 18px;
  background: var(--grad-soft); border: 1px solid var(--stroke-2);
  box-shadow: inset 0 0 14px rgba(0, 229, 255, .12);
}
.prod-card h4 { font-size: 19px; margin-bottom: 8px; }
.prod-card .desc { color: var(--text-dim); font-size: 14px; min-height: 44px; }
.prod-card .tags { display: flex; gap: 8px; flex-wrap: wrap; margin: 16px 0 20px; }
.prod-card .tags span { font-size: 12px; color: var(--cyan); padding: 4px 10px; border-radius: 6px; background: rgba(0, 229, 255, .07); border: 1px solid rgba(0, 229, 255, .12); }
.prod-card .price { font-family: var(--font-num); font-size: 26px; font-weight: 700; }
.prod-card .price small { font-size: 13px; color: var(--text-dim); font-weight: 400; }
.prod-card .prod-actions { display: flex; gap: 12px; margin-top: 20px; }
.prod-card::after {
  content: ""; position: absolute; top: -60px; right: -60px; width: 140px; height: 140px;
  background: radial-gradient(circle, rgba(0, 229, 255, .18), transparent 70%);
  pointer-events: none;
}

/* ---------- 价格表 ---------- */
.price-card { padding: 30px 28px; position: relative; text-align: center; }
.price-card.featured {
  border-color: rgba(168, 85, 247, .5);
  box-shadow: var(--glow-purple), var(--shadow);
  background: linear-gradient(180deg, rgba(168, 85, 247, .14), rgba(15, 26, 62, .55));
}
.price-card .p-name { font-size: 16px; color: var(--text-dim); }
.price-card .p-price { margin: 18px 0 6px; font-family: var(--font-num); font-size: 46px; font-weight: 800; }
.price-card .p-price span { font-size: 16px; font-weight: 600; color: var(--text-dim); }
.price-card .p-cyc { color: var(--text-faint); font-size: 13px; }
.price-card ul { margin: 22px 0 26px; text-align: left; }
.price-card ul li { padding: 7px 0; color: var(--text-dim); font-size: 14px; display: flex; gap: 10px; align-items: center; }
.price-card ul li::before { content: "◆"; color: var(--cyan); font-size: 9px; }
.price-card .hot-tag { position: absolute; top: 16px; right: 16px; }

/* ---------- 数据大屏 ---------- */
.dash-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.dash-item { padding: 26px; text-align: center; position: relative; overflow: hidden; }
.dash-item .num { font-family: var(--font-num); font-size: 44px; font-weight: 800; }
.dash-item .lbl { color: var(--text-dim); margin-top: 6px; font-size: 14px; }
.dash-item::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px;
  background: var(--grad); opacity: .8;
}

/* ---------- 新闻/列表 ---------- */
.news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.news-item { padding: 18px 4px; border-bottom: 1px solid rgba(0, 229, 255, .1); display: flex; justify-content: space-between; gap: 18px; align-items: center; }
.news-item .n-title { color: var(--text); font-size: 15px; transition: color .2s; }
.news-item:hover .n-title { color: var(--cyan); }
.news-item .n-date { color: var(--text-faint); font-size: 13px; font-family: var(--font-num); white-space: nowrap; }

/* ---------- CTA ---------- */
.cta-band {
  border-radius: 22px; padding: 54px 40px; text-align: center; position: relative; overflow: hidden;
  background: linear-gradient(120deg, rgba(0, 229, 255, .1), rgba(61, 123, 255, .1) 50%, rgba(168, 85, 247, .12));
  border: 1px solid var(--stroke-2);
}
.cta-band h3 { font-size: clamp(24px, 3.4vw, 34px); }
.cta-band p { color: var(--text-dim); margin: 14px auto 26px; max-width: 560px; }
.cta-band .btn-row { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.footer {
  margin-top: 90px; border-top: 1px solid rgba(0, 229, 255, .12);
  background: linear-gradient(180deg, transparent, rgba(6, 10, 24, .9));
  padding: 56px 0 28px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer .f-col h5 { font-size: 15px; margin-bottom: 16px; letter-spacing: .05em; }
.footer .f-col a { display: block; color: var(--text-dim); font-size: 14px; padding: 5px 0; }
.footer .f-col a:hover { color: var(--cyan); }
.footer .f-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; margin-bottom: 14px; }
.footer .f-desc { color: var(--text-faint); font-size: 13px; max-width: 300px; }
.footer .f-bottom {
  margin-top: 40px; padding-top: 22px; border-top: 1px solid rgba(0, 229, 255, .08);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  color: var(--text-faint); font-size: 13px;
}

/* ---------- 表单 ---------- */
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 8px; }
.input, .select, textarea.input {
  width: 100%; height: 46px; padding: 0 14px;
  background: rgba(8, 14, 34, .8); border: 1px solid var(--stroke);
  border-radius: 10px; color: var(--text); font-size: 14px;
  transition: border-color .2s, box-shadow .2s; outline: none;
}
textarea.input { height: auto; padding: 12px 14px; resize: vertical; }
.input:focus, .select:focus, textarea.input:focus {
  border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0, 229, 255, .15);
}
.input::placeholder { color: var(--text-faint); }
.select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--cyan) 50%), linear-gradient(135deg, var(--cyan) 50%, transparent 50%); background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }

/* ---------- 表格 ---------- */
.tbl { width: 100%; border-collapse: collapse; }
.tbl th, .tbl td { padding: 13px 14px; text-align: left; font-size: 14px; }
.tbl thead th {
  color: var(--text-dim); font-size: 13px; font-weight: 600;
  border-bottom: 1px solid var(--stroke); white-space: nowrap;
  background: rgba(0, 229, 255, .04);
}
.tbl tbody tr { border-bottom: 1px solid rgba(0, 229, 255, .08); transition: background .2s; }
.tbl tbody tr:hover { background: rgba(0, 229, 255, .05); }
.tbl tbody td { color: var(--text); }

/* ---------- 通用工具 ---------- */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.between { justify-content: space-between; }
.center { justify-items: center; }
.items-center { align-items: center; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; } .gap-24 { gap: 24px; }
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; } .mt-40 { margin-top: 40px; }
.mb-8 { margin-bottom: 8px; } .mb-16 { margin-bottom: 16px; } .mb-24 { margin-bottom: 24px; }
.text-dim { color: var(--text-dim); }
.text-cyan { color: var(--cyan); }
.text-grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.text-center { text-align: center; }
.font-num { font-family: var(--font-num); }
.section { padding: 78px 0; }
.sec-bg { background: linear-gradient(180deg, transparent, rgba(10, 14, 31, .8) 12%, rgba(10, 14, 31, .8) 88%, transparent); }

/* 滚动进入动画 */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s, transform .7s; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 自适应 ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .dash-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --nav-h: 60px; }
  .nav { background: #060a18 !important; backdrop-filter: none !important; -webkit-backdrop-filter: none !important; }
  .nav-menu {
    position: fixed; inset: var(--nav-h) 0 auto 0;
    z-index: 1200;
    flex-direction: column; gap: 0;
    background: #0b1124 !important;
    background-color: #0b1124 !important;
    opacity: 1;
    padding: 12px 20px 22px; display: none;
    border-bottom: 1px solid var(--stroke);
    box-shadow: 0 24px 48px rgba(0, 0, 0, .6);
  }
  .nav-menu.open {
    display: flex;
    background: #0b1124 !important;
    background-color: #0b1124 !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
  .nav-menu a { padding: 12px 10px; color: #eaf2ff !important; font-size: 15px; }
  .nav-menu a:hover, .nav-menu a.active { color: #7af2ff !important; background: rgba(0, 229, 255, .12); }
  .nav-inner { gap: 12px; }
  .nav-cta { gap: 8px; }
  .nav-cta .btn { height: 32px; padding: 0 12px; font-size: 13px; line-height: 30px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero { padding: 56px 0 50px; }
  .hero .hero-stats { gap: 26px; }
  .section { padding: 56px 0; }
  .cta-band { padding: 40px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .container { padding: 0 18px; }
  .tbl th, .tbl td { padding: 10px 8px; font-size: 13px; }
}
@media (max-width: 480px) {
  .dash-grid { grid-template-columns: 1fr; }
  .btn-lg { width: 100%; }
}