/* ==========================================================================
   郑州优恩信息技术有限公司 官网样式
   U&N Information Technology — Design System
   深空蓝 · HUD科技风 · 数字政务美学
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  --bg-0: #04070F;
  --bg-1: #060B19;
  --bg-2: #0A1428;
  --bg-3: #0E1A33;
  --glass: rgba(14, 26, 51, 0.62);

  --line: rgba(115, 150, 220, 0.14);
  --line-strong: rgba(115, 150, 220, 0.30);

  --primary: #2E7CF6;
  --primary-2: #57A0FF;
  --accent: #3BE0FF;

  --text-1: #EDF3FF;
  --text-2: #A9BCDD;
  --text-3: #67799E;

  --grad: linear-gradient(96deg, #2E7CF6 0%, #3BE0FF 100%);
  --grad-text: linear-gradient(100deg, #6FB1FF 0%, #3BE0FF 55%, #7EF0FF 100%);

  --font-din: "Bahnschrift", "DIN Alternate", "Agency FB", "Segoe UI", "Arial Narrow", sans-serif;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;

  --container: 1240px;
  --nav-h: 76px;
  --radius: 14px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

/* 锚点定位补偿固定导航高度 */
section[id], .prod-detail[id], .case-card[id] { scroll-margin-top: 84px; }

body {
  font-family: var(--font-cn);
  background: var(--bg-1);
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }

::selection { background: rgba(59, 224, 255, 0.28); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-0); }
::-webkit-scrollbar-thumb { background: #1A2B4E; border-radius: 8px; border: 2px solid var(--bg-0); }
::-webkit-scrollbar-thumb:hover { background: #27406E; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* 噪点纹理 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 3;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 3. 通用工具 ---------- */
.container { width: min(var(--container), 100% - 48px); margin-inline: auto; }

.section { position: relative; padding: clamp(72px, 9vw, 120px) 0; }

/* 蓝图网格背景 */
.grid-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(90, 140, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 140, 255, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 75%);
}

/* 章节标题 */
.sec-head { max-width: 720px; margin-bottom: clamp(40px, 5vw, 64px); }
.sec-head.center { margin-inline: auto; text-align: center; }
.sec-head.center .sec-tag::after { display: none; }

.sec-tag {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-din);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.sec-tag::before { content: ""; width: 26px; height: 1px; background: var(--grad); }
.sec-head.center .sec-tag::before { display: none; }
.sec-tag::after { content: ""; flex: 0 0 46px; height: 1px; background: linear-gradient(90deg, var(--line-strong), transparent); }

.sec-title {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  color: var(--text-1);
  line-height: 1.28;
  letter-spacing: 0.02em;
}
.sec-title em { font-style: normal; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.sec-desc { margin-top: 16px; font-size: 16px; color: var(--text-2); }

/* 按钮 */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 34px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.08em;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s, color 0.35s, background 0.35s;
  white-space: nowrap;
}
.btn .arr { transition: transform 0.35s var(--ease); font-family: var(--font-din); }
.btn:hover .arr { transform: translateX(5px); }

.btn-primary { background: var(--grad); color: #04122A; box-shadow: 0 8px 28px -8px rgba(46, 124, 246, 0.55); }
.btn-primary::after {
  content: "";
  position: absolute;
  top: 0; left: -80%;
  width: 50%; height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.45), transparent);
  transform: skewX(-24deg);
  transition: left 0.6s var(--ease);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 36px -8px rgba(59, 224, 255, 0.5); }
.btn-primary:hover::after { left: 130%; }

.btn-ghost { border: 1px solid var(--line-strong); color: var(--text-1); background: rgba(10, 20, 40, 0.4); }
.btn-ghost:hover { border-color: rgba(59, 224, 255, 0.6); color: var(--accent); background: rgba(59, 224, 255, 0.06); transform: translateY(-3px); }

/* 标签 */
.tag {
  display: inline-block;
  padding: 3px 12px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--text-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(10, 20, 40, 0.5);
  transition: color 0.3s, border-color 0.3s;
}
.tag:hover { color: var(--accent); border-color: rgba(59, 224, 255, 0.45); }

/* 浏览器截图框 */
.shot {
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  overflow: hidden;
  background: #0B1526;
  box-shadow: 0 24px 60px -18px rgba(2, 8, 24, 0.8), 0 0 0 1px rgba(59, 224, 255, 0.04);
}
.shot-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  background: rgba(16, 28, 54, 0.9);
  border-bottom: 1px solid var(--line);
}
.shot-bar i { width: 10px; height: 10px; border-radius: 50%; background: #2A3B60; }
.shot-bar i:nth-child(1) { background: #FF5F57; opacity: 0.75; }
.shot-bar i:nth-child(2) { background: #FEBC2E; opacity: 0.75; }
.shot-bar i:nth-child(3) { background: #28C840; opacity: 0.75; }
.shot-bar span {
  margin-left: 8px;
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.08em;
  font-family: var(--font-din);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.shot-body { position: relative; }
.shot-body img { width: 100%; }

/* HUD 取景角标 */
.hud { position: relative; }
.hud::before, .hud::after {
  content: "";
  position: absolute;
  width: 26px; height: 26px;
  border: 2px solid rgba(59, 224, 255, 0.55);
  z-index: 2;
  transition: width 0.4s var(--ease), height 0.4s var(--ease);
}
.hud::before { top: -8px; left: -8px; border-right: none; border-bottom: none; }
.hud::after { bottom: -8px; right: -8px; border-left: none; border-top: none; }
.hud:hover::before, .hud:hover::after { width: 44px; height: 44px; }

/* ---------- 4. 进场动画 ---------- */
[data-reveal] { opacity: 0; transform: translateY(30px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); transition-delay: var(--d, 0s); will-change: opacity, transform; }
[data-reveal="left"] { transform: translateX(-40px); }
[data-reveal="right"] { transform: translateX(40px); }
[data-reveal="zoom"] { transform: scale(0.92); }
[data-reveal].in { opacity: 1; transform: none; }

/* ---------- 5. 预加载 ---------- */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 26px;
  background: var(--bg-0);
  transition: opacity 0.6s ease, visibility 0.6s;
}
#preloader.done { opacity: 0; visibility: hidden; }
.pre-logo { width: 120px; animation: preFloat 1.6s ease-in-out infinite; }
.pre-logo img { width: 100%; filter: drop-shadow(0 0 18px rgba(59, 224, 255, 0.45)); }
.pre-bar { width: 180px; height: 2px; background: #16264A; border-radius: 2px; overflow: hidden; }
.pre-bar i { display: block; height: 100%; width: 40%; background: var(--grad); animation: preSlide 1.1s ease-in-out infinite; }
@keyframes preFloat { 0%, 100% { transform: translateY(0); opacity: 1; } 50% { transform: translateY(-8px); opacity: 0.85; } }
@keyframes preSlide { 0% { transform: translateX(-120%); } 100% { transform: translateX(480%); } }

/* ---------- 6. 进度条 / 回顶部 ---------- */
#scrollbar { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: var(--grad); z-index: 999; box-shadow: 0 0 12px rgba(59, 224, 255, 0.7); }

#toTop {
  position: fixed;
  right: 26px;
  bottom: 30px;
  z-index: 90;
  width: 46px; height: 46px;
  border-radius: 10px;
  background: rgba(14, 26, 51, 0.85);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(8px);
  color: var(--text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: all 0.4s var(--ease);
}
#toTop.show { opacity: 1; visibility: visible; transform: none; }
#toTop:hover { color: var(--accent); border-color: rgba(59, 224, 255, 0.55); box-shadow: 0 8px 24px -8px rgba(59, 224, 255, 0.4); }

/* ---------- 7. 导航 ---------- */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  transition: background 0.4s, border-color 0.4s, height 0.4s;
  border-bottom: 1px solid transparent;
}
#navbar.scrolled {
  height: 66px;
  background: rgba(5, 10, 22, 0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--line);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 100%; gap: 20px; }

.brand { display: flex; align-items: center; gap: 13px; flex-shrink: 0; }
.brand-logo { height: 40px; width: auto; display: block; }
#navbar .brand-logo { filter: drop-shadow(0 2px 10px rgba(59, 224, 255, 0.25)); }
.brand-text { line-height: 1.5; }
.brand-text b { display: block; font-size: 17px; font-weight: 700; color: var(--text-1); letter-spacing: 0.12em; }
.brand-text span { display: block; font-family: var(--font-din); font-size: 9.5px; letter-spacing: 0.22em; color: var(--text-3); text-transform: uppercase; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  position: relative;
  padding: 10px 16px;
  font-size: 15px;
  color: var(--text-2);
  letter-spacing: 0.06em;
  transition: color 0.3s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 4px;
  height: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--text-1); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

.nav-cta { flex-shrink: 0; }
.nav-cta .btn { padding: 10px 26px; font-size: 14px; }

#burger {
  display: none;
  width: 44px; height: 44px;
  position: relative;
  z-index: 120;
  color: var(--text-1);
}
#burger span {
  position: absolute;
  left: 11px;
  width: 22px; height: 2px;
  background: currentColor;
  transition: all 0.35s var(--ease);
}
#burger span:nth-child(1) { top: 17px; }
#burger span:nth-child(2) { top: 23px; }
#burger span:nth-child(3) { top: 29px; }
#burger.open span:nth-child(1) { top: 23px; transform: rotate(45deg); }
#burger.open span:nth-child(2) { opacity: 0; transform: translateX(8px); }
#burger.open span:nth-child(3) { top: 23px; transform: rotate(-45deg); }

/* 移动端全屏菜单 */
#mnav {
  position: fixed;
  inset: 0;
  z-index: 110;
  background: rgba(4, 8, 17, 0.97);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.45s ease, visibility 0.45s;
}
#mnav.open { opacity: 1; visibility: visible; }
#mnav a {
  font-size: 22px;
  color: var(--text-2);
  letter-spacing: 0.2em;
  padding: 13px 20px;
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease), color 0.3s;
  transition-delay: calc(0.06s * var(--i, 0) + 0.1s);
}
#mnav.open a { opacity: 1; transform: none; }
#mnav a:hover, #mnav a.active { color: var(--accent); }
#mnav .mnav-meta { margin-top: 34px; font-size: 13px; color: var(--text-3); letter-spacing: 0.15em; opacity: 0; transition: opacity 0.5s 0.5s; }
#mnav.open .mnav-meta { opacity: 1; }

/* ---------- 8. Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-0);
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.55; animation: heroZoom 18s ease-in-out infinite alternate; }
@keyframes heroZoom { from { transform: scale(1); } to { transform: scale(1.08); } }

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 90% 60% at 70% 30%, rgba(46, 124, 246, 0.16), transparent 60%),
    linear-gradient(180deg, rgba(4, 7, 15, 0.82) 0%, rgba(4, 7, 15, 0.45) 40%, var(--bg-1) 96%);
}
#particles { position: absolute; inset: 0; z-index: 1; }

.hero-inner {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--nav-h);
  padding-bottom: 40px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(10, 20, 40, 0.55);
  backdrop-filter: blur(6px);
  font-size: 13px;
  letter-spacing: 0.28em;
  color: var(--text-2);
  margin-bottom: 30px;
  width: fit-content;
}
.hero-eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(0.8); } }

.hero-title {
  font-size: clamp(38px, 6.4vw, 74px);
  font-weight: 700;
  color: var(--text-1);
  line-height: 1.22;
  letter-spacing: 0.03em;
  max-width: 15em;
}
.hero-title .grad { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
#typeword { color: var(--accent); text-shadow: 0 0 22px rgba(59, 224, 255, 0.35); }
.caret { display: inline-block; width: 3px; height: 0.86em; margin-left: 5px; background: var(--accent); animation: caret 0.9s step-end infinite; vertical-align: -0.06em; }
@keyframes caret { 50% { opacity: 0; } }

.hero-sub {
  margin-top: 26px;
  max-width: 620px;
  font-size: clamp(15px, 1.6vw, 17.5px);
  color: var(--text-2);
}
.hero-sub b { color: var(--text-1); font-weight: 600; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 42px; }

/* 底部数据条 */
.hero-stats {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(6, 11, 25, 0.2), rgba(6, 11, 25, 0.72));
  backdrop-filter: blur(10px);
}
.hero-stats .container { display: grid; grid-template-columns: repeat(4, 1fr); }
.hstat { padding: 26px 12px; text-align: center; position: relative; }
.hstat + .hstat::before { content: ""; position: absolute; left: 0; top: 26%; height: 48%; width: 1px; background: linear-gradient(180deg, transparent, var(--line-strong), transparent); }
.hstat b { display: block; font-family: var(--font-din); font-size: clamp(30px, 3.4vw, 42px); font-weight: 700; color: var(--text-1); line-height: 1.15; }
.hstat b i { font-style: normal; font-size: 0.55em; color: var(--accent); margin-left: 2px; }
.hstat span { display: block; margin-top: 4px; font-size: 13.5px; letter-spacing: 0.18em; color: var(--text-3); }
.hstat b span{font-size: 36px; color: #eee;}

/* 滚动提示 */
.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  z-index: 2;
  width: 24px; height: 40px;
  border: 2px solid var(--line-strong);
  border-radius: 14px;
  display: block;
}
.scroll-hint::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 7px;
  width: 3px; height: 8px;
  margin-left: -1.5px;
  border-radius: 3px;
  background: var(--accent);
  animation: wheel 1.8s ease-in-out infinite;
}
@keyframes wheel { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(14px); opacity: 0; } 100% { opacity: 0; } }

/* ---------- 9. 跑马灯 ---------- */
.marquee { border-block: 1px solid var(--line); background: var(--bg-2); overflow: hidden; padding: 18px 0; position: relative; }
.marquee::before, .marquee::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}
.marquee::before { left: 0; background: linear-gradient(90deg, var(--bg-1), transparent); }
.marquee::after { right: 0; background: linear-gradient(-90deg, var(--bg-1), transparent); }
.marquee-track { display: flex; width: max-content; animation: marquee 34s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  display: inline-flex;
  align-items: center;
  gap: 26px;
  padding-right: 26px;
  font-family: var(--font-din);
  font-size: 15px;
  letter-spacing: 0.3em;
  color: var(--text-3);
  text-transform: uppercase;
  white-space: nowrap;
}
.marquee-track span::after { content: "◆"; font-size: 8px; color: rgba(59, 224, 255, 0.5); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 10. 首页：关于 ---------- */
.about-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(40px, 5vw, 84px); align-items: center; }
.about-visual { position: relative; }
.about-visual .shot { transform: rotate(0.6deg); }
.about-visual::before {
  content: "";
  position: absolute;
  inset: 28px -22px -22px 28px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  z-index: -1;
}
.about-badge {
  position: absolute;
  right: -14px;
  bottom: -26px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 22px;
  border-radius: 12px;
  background: rgba(10, 20, 40, 0.92);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(10px);
  box-shadow: 0 18px 44px -12px rgba(2, 8, 24, 0.9);
  animation: badgeFloat 5s ease-in-out infinite;
}
@keyframes badgeFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
.about-badge b { font-family: var(--font-din); font-size: 30px; color: var(--accent); line-height: 1; }
.about-badge span { font-size: 13px; color: var(--text-2); line-height: 1.5; }
.about-badge span em { display: block; font-style: normal; font-size: 11.5px; color: var(--text-3); letter-spacing: 0.1em; }

.about-points { margin-top: 30px; display: grid; gap: 16px; }
.about-points li { display: flex; gap: 14px; align-items: flex-start; }
.about-points .ico {
  flex-shrink: 0;
  width: 24px; height: 24px;
  margin-top: 5px;
  color: var(--accent);
}
.about-points b { color: var(--text-1); font-weight: 600; }
.about-points p { font-size: 14.5px; color: var(--text-2); }

/* ---------- 11. 核心业务卡片 ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.svc-card {
  position: relative;
  padding: 34px 26px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(14, 26, 51, 0.5), rgba(8, 14, 29, 0.55));
  overflow: hidden;
  transition: transform 0.45s var(--ease), border-color 0.45s, box-shadow 0.45s;
}
.svc-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease);
}
.svc-card:hover { transform: translateY(-8px); border-color: rgba(59, 224, 255, 0.35); box-shadow: 0 24px 50px -20px rgba(46, 124, 246, 0.35); }
.svc-card:hover::before { transform: scaleX(1); }

.svc-num { position: absolute; top: 22px; right: 22px; font-family: var(--font-din); font-size: 15px; letter-spacing: 0.14em; color: var(--text-3); }
.svc-card:hover .svc-num { color: var(--accent); }
.svc-ico {
  width: 56px; height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  background: rgba(46, 124, 246, 0.12);
  border: 1px solid rgba(59, 224, 255, 0.22);
  margin-bottom: 24px;
  transition: transform 0.45s var(--ease), background 0.45s;
}
.svc-card:hover .svc-ico { transform: translateY(-4px) rotate(-4deg); background: rgba(59, 224, 255, 0.16); }
.svc-ico svg { width: 27px; height: 27px; }
.svc-card h3 { font-size: 19px; color: var(--text-1); margin-bottom: 12px; letter-spacing: 0.04em; }
.svc-card p { font-size: 14px; color: var(--text-2); line-height: 1.75; }

/* ---------- 12. 产品卡片 ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.prod-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(14, 26, 51, 0.42), rgba(8, 14, 29, 0.5));
  overflow: hidden;
  transition: transform 0.45s var(--ease), border-color 0.45s, box-shadow 0.45s;
}
.prod-card:hover { transform: translateY(-8px); border-color: rgba(59, 224, 255, 0.32); box-shadow: 0 30px 60px -22px rgba(2, 8, 24, 0.9); }
.prod-media { position: relative; overflow: hidden; }
.prod-media img { width: 100%; aspect-ratio: 16/9.6; object-fit: cover; object-position: top; transition: transform 0.8s var(--ease); }
.prod-card:hover .prod-media img { transform: scale(1.05); }
.prod-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(6, 11, 25, 0.6)); pointer-events: none; }

.prod-ico {
  position: absolute;
  z-index: 2;
  left: 20px; bottom: 20px;
  width: 52px; height: 52px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  background: #0A1730;
  border: 1px solid var(--line-strong);
  box-shadow: 0 10px 24px -8px rgba(2, 8, 24, 0.8);
  transition: background 0.4s, color 0.4s;
}
.prod-card:hover .prod-ico { background: var(--grad); color: #04122A; }
.prod-ico svg { width: 24px; height: 24px; }

.prod-body { padding: 36px 24px 26px; }
.prod-body h3 { font-size: 19px; color: var(--text-1); letter-spacing: 0.04em; margin-bottom: 10px; }
.prod-body p { font-size: 14px; color: var(--text-2); line-height: 1.75; min-height: 74px; }
.prod-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }

.prod-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 13.5px;
  letter-spacing: 0.1em;
  color: var(--accent);
  opacity: 0.85;
}
.prod-more::after { content: "→"; font-family: var(--font-din); transition: transform 0.35s var(--ease); }
.prod-card:hover .prod-more { opacity: 1; }
.prod-card:hover .prod-more::after { transform: translateX(5px); }

/* ---------- 13. 案例卡片 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.case-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(180deg, rgba(14, 26, 51, 0.42), rgba(8, 14, 29, 0.5));
  transition: transform 0.45s var(--ease), border-color 0.45s, box-shadow 0.45s;
  display: flex;
  flex-direction: column;
}
.case-card:hover { transform: translateY(-8px); border-color: rgba(59, 224, 255, 0.32); box-shadow: 0 30px 60px -22px rgba(2, 8, 24, 0.9); }
.case-media { position: relative; overflow: hidden; }
.case-media img { width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: transform 0.8s var(--ease); }
.case-card:hover .case-media img { transform: scale(1.06); }
.case-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(4, 7, 15, 0) 40%, rgba(4, 7, 15, 0.55)); }

.case-cat {
  position: absolute;
  z-index: 2;
  top: 16px; left: 16px;
  padding: 4px 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent);
  border: 1px solid rgba(59, 224, 255, 0.4);
  border-radius: 999px;
  background: rgba(6, 11, 25, 0.7);
  backdrop-filter: blur(6px);
}
.case-body { padding: 24px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.case-body h3 { font-size: 18px; color: var(--text-1); letter-spacing: 0.03em; margin-bottom: 10px; }
.case-body p { font-size: 14px; color: var(--text-2); line-height: 1.75; flex: 1; }
.case-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--line); }

/* 横向大案例卡（含手机截图） */
.case-card.wide { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 230px; }
.case-card.wide .case-body { padding: clamp(24px, 3vw, 40px); }
.case-card.wide .case-body p { max-width: 760px; }
.case-card.wide .case-cat { position: static; display: inline-block; margin-bottom: 14px; }
.case-wide-media {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 26px 20px;
  background: rgba(5, 10, 21, 0.55);
  border-left: 1px solid var(--line);
}
.case-wide-media .pd-phone { width: 100%; max-width: 190px; }
.case-wide-media .pd-phone img { aspect-ratio: 9/17.2; object-fit: cover; object-position: top; }

/* ---------- 14. 理念 ---------- */
.values-band { background: var(--bg-2); border-block: 1px solid var(--line); position: relative; overflow: hidden; }
.values-band .grid-bg { opacity: 0.6; }
.values-grid { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.value-item { text-align: center; padding: 20px 14px; position: relative; }
.value-item + .value-item::before { content: ""; position: absolute; left: 0; top: 20%; height: 60%; width: 1px; background: linear-gradient(180deg, transparent, var(--line-strong), transparent); }
.value-char {
  font-size: clamp(40px, 4.6vw, 58px);
  font-weight: 700;
  color: var(--text-1);
  letter-spacing: 0.1em;
  line-height: 1.3;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.value-item b { display: block; margin-top: 6px; font-family: var(--font-din); font-size: 12px; letter-spacing: 0.4em; color: var(--text-3); text-transform: uppercase; }
.value-item p { margin-top: 14px; font-size: 13.5px; color: var(--text-2); }

/* ---------- 15. CTA ---------- */
.cta { position: relative; overflow: hidden; }
.cta-bg { position: absolute; inset: 0; }
.cta-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.4; }
.cta-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(4, 7, 15, 0.94) 20%, rgba(4, 7, 15, 0.55) 70%, rgba(46, 124, 246, 0.16)); }
.cta-inner { position: relative; z-index: 2; padding: clamp(64px, 8vw, 100px) 0; }
.cta-inner h2 { font-size: clamp(28px, 3.6vw, 42px); color: var(--text-1); font-weight: 700; letter-spacing: 0.04em; }
.cta-inner h2 em { font-style: normal; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.cta-inner p { margin-top: 14px; max-width: 560px; color: var(--text-2); }
.cta-inner .btn { margin-top: 34px; }

/* ---------- 16. 子页 Banner ---------- */
.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + clamp(60px, 8vw, 96px)) 0 clamp(48px, 6vw, 72px);
  overflow: hidden;
  background: var(--bg-0);
}
.page-hero-bg { position: absolute; inset: 0; }
.page-hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.42; }
.page-hero-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(4, 7, 15, 0.8), rgba(6, 11, 25, 0.72) 60%, var(--bg-1)); }
.page-hero .container { position: relative; z-index: 2; }
.crumb { display: flex; align-items: center; gap: 10px; font-size: 13px; letter-spacing: 0.12em; color: var(--text-3); margin-bottom: 22px; }
.crumb a:hover { color: var(--accent); }
.crumb i { font-style: normal; font-family: var(--font-din); }
.page-hero h1 { font-size: clamp(32px, 4.6vw, 52px); font-weight: 700; color: var(--text-1); letter-spacing: 0.06em; }
.page-hero .ph-en { margin-top: 10px; font-family: var(--font-din); font-size: 14px; letter-spacing: 0.42em; color: var(--text-3); text-transform: uppercase; }

/* ---------- 17. 关于页 ---------- */
.fact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.fact {
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(14, 26, 51, 0.5), rgba(8, 14, 29, 0.55));
  text-align: center;
  transition: border-color 0.4s, transform 0.4s var(--ease);
}
.fact:hover { border-color: rgba(59, 224, 255, 0.35); transform: translateY(-5px); }
.fact b { display: block; font-family: var(--font-din); font-size: 36px; color: var(--accent); line-height: 1.2; }
.fact b i { font-style: normal; font-size: 0.55em; }
.fact span { display: block; margin-top: 6px; font-size: 13.5px; color: var(--text-2); letter-spacing: 0.08em; }
.fact b span{font-size: 36px; color: #eee;}

.tl { position: relative; padding-left: 34px; }
.tl::before { content: ""; position: absolute; left: 8px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(180deg, var(--accent), rgba(46, 124, 246, 0.5), transparent); }
.tl-item { position: relative; padding: 0 0 34px 18px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -34px; top: 8px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--bg-1);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 5px rgba(59, 224, 255, 0.12), 0 0 16px rgba(59, 224, 255, 0.5);
}
.tl-item b { font-family: var(--font-din); font-size: 26px; color: var(--text-1); letter-spacing: 0.06em; }
.tl-item h4 { font-size: 17px; color: var(--accent); margin: 4px 0 8px; letter-spacing: 0.05em; }
.tl-item p { font-size: 14.5px; color: var(--text-2); max-width: 640px; }

.domain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.domain {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 24px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(14, 26, 51, 0.45), rgba(8, 14, 29, 0.5));
  transition: border-color 0.4s, transform 0.4s var(--ease), background 0.4s;
}
.domain:hover { border-color: rgba(59, 224, 255, 0.35); transform: translateY(-5px); background: rgba(59, 224, 255, 0.05); }
.domain .ico { flex-shrink: 0; width: 48px; height: 48px; border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--accent); background: rgba(46, 124, 246, 0.12); border: 1px solid rgba(59, 224, 255, 0.2); }
.domain .ico svg { width: 23px; height: 23px; }
.domain h4 { font-size: 17px; color: var(--text-1); letter-spacing: 0.05em; }
.domain p { font-size: 13px; color: var(--text-3); margin-top: 3px; }

/* ---------- 18. 产品页 ---------- */
.prod-detail { padding: clamp(54px, 7vw, 88px) 0; border-top: 1px solid var(--line); }
.prod-detail .pd-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 5vw, 76px); align-items: center; }
.prod-detail.flip .pd-grid .pd-visual { order: 2; }
.prod-detail.flip .pd-grid .pd-text { order: 1; }

.pd-num { font-family: var(--font-din); font-size: 15px; letter-spacing: 0.3em; color: var(--accent); margin-bottom: 14px; display: flex; align-items: center; gap: 14px; }
.pd-num::after { content: ""; flex: 1; max-width: 80px; height: 1px; background: var(--grad); }
.pd-text h2 { font-size: clamp(26px, 3.2vw, 36px); color: var(--text-1); letter-spacing: 0.04em; margin-bottom: 8px; }
.pd-text .pd-en { font-family: var(--font-din); font-size: 12.5px; letter-spacing: 0.3em; color: var(--text-3); text-transform: uppercase; margin-bottom: 20px; }
.pd-text p { font-size: 15px; color: var(--text-2); }
.pd-feats { margin-top: 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px; }
.pd-feats li { display: flex; align-items: center; gap: 10px; font-size: 14.5px; color: var(--text-1); }
.pd-feats li::before {
  content: "";
  flex-shrink: 0;
  width: 8px; height: 8px;
  border: 1.5px solid var(--accent);
  transform: rotate(45deg);
  box-shadow: 0 0 8px rgba(59, 224, 255, 0.4);
}
.pd-shots { display: grid; gap: 16px; }
.pd-shots .row { display: grid; grid-template-columns: 1fr 132px; gap: 16px; align-items: start; }
.pd-phone {
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  padding: 10px;
  background: #0B1526;
  box-shadow: 0 18px 44px -14px rgba(2, 8, 24, 0.85);
}
.pd-phone .notch { width: 44px; height: 5px; border-radius: 4px; background: #1E3156; margin: 2px auto 10px; }
.pd-phone img { border-radius: 10px; aspect-ratio: 9/18.2; object-fit: cover; object-position: top; width: 100%; }

/* ---------- 19. 案例页 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.filter-btn {
  padding: 9px 22px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--text-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(10, 20, 40, 0.5);
  transition: all 0.35s var(--ease);
}
.filter-btn:hover { color: var(--accent); border-color: rgba(59, 224, 255, 0.4); }
.filter-btn.active { background: var(--grad); color: #04122A; border-color: transparent; font-weight: 600; box-shadow: 0 6px 20px -6px rgba(46, 124, 246, 0.5); }

/* ---------- 20. 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(36px, 5vw, 72px); align-items: start; }
.info-card {
  display: flex;
  gap: 18px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(14, 26, 51, 0.5), rgba(8, 14, 29, 0.55));
  margin-bottom: 18px;
  transition: border-color 0.4s, transform 0.4s var(--ease);
}
.info-card:hover { border-color: rgba(59, 224, 255, 0.35); transform: translateX(6px); }
.info-card .ico { flex-shrink: 0; width: 48px; height: 48px; border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--accent); background: rgba(46, 124, 246, 0.12); border: 1px solid rgba(59, 224, 255, 0.2); }
.info-card .ico svg { width: 22px; height: 22px; }
.info-card h4 { font-size: 15px; color: var(--text-1); letter-spacing: 0.1em; margin-bottom: 6px; }
.info-card p { font-size: 14.5px; color: var(--text-2); line-height: 1.7; word-break: break-all; }
.info-card p a:hover { color: var(--accent); }

.form-card {
  padding: clamp(26px, 3.6vw, 44px);
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: linear-gradient(160deg, rgba(14, 26, 51, 0.72), rgba(6, 11, 25, 0.85));
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
}
.form-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--grad); }
.form-card h3 { font-size: 21px; color: var(--text-1); letter-spacing: 0.05em; margin-bottom: 8px; }
.form-card .form-tip { font-size: 13px; color: var(--text-3); margin-bottom: 26px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13.5px; color: var(--text-2); letter-spacing: 0.1em; margin-bottom: 8px; }
.field label i { font-style: normal; color: var(--accent); }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 13px 16px;
  background: rgba(6, 11, 25, 0.7);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--text-1);
  font-size: 14.5px;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2367799E' stroke-width='1.6' fill='none'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; }
.field select option { background: var(--bg-2); }
.field textarea { min-height: 120px; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: var(--text-3); }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(59, 224, 255, 0.12); }

.form-note { font-size: 12.5px; color: var(--text-3); margin-top: 14px; line-height: 1.7; }

/* ---------- 21. Footer ---------- */
footer { background: var(--bg-0); border-top: 1px solid var(--line); position: relative; overflow: hidden; }
footer::before {
  content: "";
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 480px; height: 160px;
  background: radial-gradient(ellipse at center top, rgba(46, 124, 246, 0.14), transparent 70%);
  pointer-events: none;
}
.foot-main { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: clamp(30px, 4vw, 60px); padding: clamp(50px, 6vw, 76px) 0 46px; }
.foot-brand img { height: 42px; width: auto; margin-bottom: 20px; filter: drop-shadow(0 2px 12px rgba(59, 224, 255, 0.2)); }
.foot-brand p { font-size: 13.5px; color: var(--text-3); line-height: 1.85; max-width: 300px; }
.foot-col h5 { font-size: 15px; color: var(--text-1); letter-spacing: 0.16em; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.foot-col h5::before { content: ""; width: 14px; height: 2px; background: var(--grad); }
.foot-col li { margin-bottom: 11px; }
.foot-col a { font-size: 14px; color: var(--text-2); transition: color 0.3s, padding-left 0.3s; }
.foot-col a:hover { color: var(--accent); padding-left: 5px; }
.foot-contact li { display: flex; gap: 10px; font-size: 13.5px; color: var(--text-2); margin-bottom: 12px; line-height: 1.6; }
.foot-contact svg { flex-shrink: 0; width: 16px; height: 16px; margin-top: 5px; color: var(--accent); }

.foot-bottom { border-top: 1px solid var(--line); padding: 22px 0; }
.foot-bottom .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 13px; color: var(--text-3); letter-spacing: 0.06em; }
.foot-bottom a:hover { color: var(--accent); }

/* ---------- 22. 响应式 ---------- */
@media (max-width: 1080px) {
  .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .foot-main { grid-template-columns: 1fr 1fr; }
  .pd-shots .row { grid-template-columns: 1fr 110px; }
}

@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  #burger { display: block; }
  .about-grid { grid-template-columns: 1fr; gap: 56px; }
  .case-grid { grid-template-columns: 1fr; }
  .case-card.wide { grid-template-columns: 1fr; }
  .case-wide-media { border-left: none; border-top: 1px solid var(--line); }
  .prod-detail .pd-grid { grid-template-columns: 1fr; gap: 40px; }
  .prod-detail.flip .pd-grid .pd-visual { order: 1; }
  .prod-detail.flip .pd-grid .pd-text { order: 2; }
  .contact-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: repeat(2, 1fr); gap: 34px 10px; }
  .value-item:nth-child(3)::before { display: none; }
  .fact-grid { grid-template-columns: repeat(2, 1fr); }
  .domain-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats .container { grid-template-columns: repeat(2, 1fr); }
  .hstat:nth-child(3)::before { display: none; }
}

@media (max-width: 640px) {
  .container { width: calc(100% - 40px); }
  .section { padding: 64px 0; }
  .svc-grid { grid-template-columns: 1fr; }
  .prod-grid { grid-template-columns: 1fr; }
  .prod-body p { min-height: 0; }
  .form-row { grid-template-columns: 1fr; }
  .pd-feats { grid-template-columns: 1fr; }
  .domain-grid { grid-template-columns: 1fr; }
  .pd-shots .row { grid-template-columns: 1fr; }
  .pd-phone { max-width: 240px; margin-inline: auto; }
  .foot-main { grid-template-columns: 1fr; gap: 34px; }
  .foot-bottom .container { justify-content: center; text-align: center; }
  .hero-actions .btn { flex: 1; justify-content: center; }
  .about-badge { right: 6px; bottom: -20px; padding: 12px 16px; }
  .about-badge b { font-size: 24px; }
  .scroll-hint { display: none; }
  .marquee::before, .marquee::after { width: 60px; }
}

/* ---------- 23. 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; }
}