/* ============================================================
   诺格科技 · 2026 主流 UI
   深色科技风 / Aurora 极光渐变 / 玻璃拟态 / 流畅动效
   ============================================================ */

/* ---------- 变量 ---------- */
:root {
  --bg: #0b0f1e;
  --bg-2: #0e1428;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #eef2ff;
  --text-2: #a5b0cf;
  --text-3: #6d7898;
  --text-muted: #94a3b8;
  --primary: #6366f1;
  --primary-2: #8b5cf6;
  --accent: #22d3ee;
  --success: #34d399;
  --danger: #f87171;
  --grad: linear-gradient(120deg, #6366f1 0%, #8b5cf6 55%, #22d3ee 100%);
  --grad-soft: linear-gradient(120deg, rgba(99,102,241,.16), rgba(34,211,238,.10));
  --shadow: 0 20px 60px rgba(0,0,0,.45);
  --shadow-glow: 0 0 40px rgba(99,102,241,.35);
  --radius: 20px;
  --radius-lg: 28px;
  --radius-sm: 12px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --maxw: 1200px;
  --header-h: 76px;
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img, svg { vertical-align: middle; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: rgba(99,102,241,.4); color: #fff; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 背景氛围 ---------- */
.bg-aurora { position: fixed; inset: 0; z-index: -2; overflow: hidden; background: var(--bg); }
.orb {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5;
  will-change: transform;
  animation: float 18s ease-in-out infinite;
}
.orb-1 { width: 560px; height: 560px; background: radial-gradient(circle, rgba(99,102,241,.55), transparent 65%); top: -180px; left: -120px; }
.orb-2 { width: 480px; height: 480px; background: radial-gradient(circle, rgba(34,211,238,.38), transparent 65%); top: 30%; right: -160px; animation-delay: -6s; }
.orb-3 { width: 520px; height: 520px; background: radial-gradient(circle, rgba(139,92,246,.4), transparent 65%); bottom: -220px; left: 28%; animation-delay: -12s; }
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -30px) scale(1.06); }
  66% { transform: translate(-30px, 24px) scale(.96); }
}
.bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
}
.cursor-glow {
  position: fixed; width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,.14), transparent 60%);
  pointer-events: none; z-index: 0; transform: translate(-50%, -50%);
  transition: opacity .4s; opacity: 0;
}
@media (max-width: 900px) { .cursor-glow { display: none; } }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  transition: background .35s, box-shadow .35s, border-color .35s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(11, 15, 30, .72);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom-color: var(--border);
  box-shadow: 0 10px 40px rgba(0,0,0,.35);
}
.nav-inner { height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { display: inline-flex; filter: drop-shadow(0 4px 14px rgba(99,102,241,.5)); }
.brand-text { font-size: 20px; font-weight: 800; letter-spacing: .5px; display: flex; flex-direction: column; line-height: 1.15; }
.brand-text small { font-size: 9.5px; font-weight: 600; letter-spacing: 3px; color: var(--text-3); font-family: ui-monospace, monospace; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  position: relative; padding: 9px 16px; border-radius: 999px; font-size: 15px; font-weight: 500;
  color: var(--text-2); transition: color .25s, background .25s;
}
.main-nav a:hover { color: var(--text); background: var(--surface-2); }
.main-nav a.active { color: #fff; background: var(--grad-soft); }
.main-nav a.active::after {
  content: ""; position: absolute; left: 50%; bottom: 3px; transform: translateX(-50%);
  width: 16px; height: 2.5px; border-radius: 2px; background: var(--grad);
}
.main-nav .nav-cta {
  margin-left: 10px; padding: 10px 22px; color: #fff; font-weight: 600;
  background: var(--grad); box-shadow: var(--shadow-glow); border-radius: 999px;
}
.main-nav .nav-cta:hover { filter: brightness(1.12); transform: translateY(-1px); }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px; padding: 10px; border-radius: 10px;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .3s, opacity .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 26px; border-radius: 999px; font-size: 15.5px; font-weight: 600;
  transition: transform .25s, box-shadow .25s, background .25s, border-color .25s;
}
.btn svg { transition: transform .25s; }
.btn:hover svg { transform: translateX(3px); }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 10px 30px rgba(99,102,241,.4); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(99,102,241,.55); }
.btn-ghost { color: var(--text); border: 1px solid var(--border-strong); background: rgba(255,255,255,.02); }
.btn-ghost:hover { transform: translateY(-2px); border-color: rgba(99,102,241,.6); background: rgba(99,102,241,.08); }
.btn-lg { padding: 16px 34px; font-size: 16.5px; }

/* ---------- 排版 ---------- */
.section { position: relative; padding: 96px 0; }
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px; font-size: 13px; font-weight: 600; letter-spacing: 1.2px;
  color: var(--accent); background: rgba(34,211,238,.08); border: 1px solid rgba(34,211,238,.22);
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--grad); }
h1, h2, h3, h4 { line-height: 1.22; font-weight: 800; letter-spacing: -.02em; }
.hero-title, .page-title {
  font-size: clamp(34px, 6vw, 64px); font-weight: 900; letter-spacing: -.03em; line-height: 1.12;
}
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.lead { font-size: clamp(16px, 1.6vw, 19px); color: var(--text-2); }
.section-title { font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; }
.section-sub { color: var(--text-2); margin-top: 14px; font-size: 16px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; padding: calc(var(--header-h) + 72px) 0 84px;
  min-height: 100vh; display: flex; align-items: center;
}
.hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 18px; border-radius: 999px; font-size: 13.5px; font-weight: 600;
  color: var(--text-2); background: var(--surface); border: 1px solid var(--border);
  margin-bottom: 26px;
}
.hero-badge .pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--success); position: relative; }
.hero-badge .pulse::after {
  content: ""; position: absolute; inset: -4px; border-radius: 50%;
  border: 1.5px solid var(--success); animation: pulse 2s ease-out infinite;
}
@keyframes pulse { 0% { transform: scale(.6); opacity: 1; } 100% { transform: scale(1.6); opacity: 0; } }
.hero-title { margin: 0 0 22px; }
.hero .lead { max-width: 560px; margin-bottom: 38px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 34px; margin-top: 52px; flex-wrap: wrap; }
.hero-meta .m-num { font-size: 28px; font-weight: 800; font-family: ui-monospace, monospace; }
.hero-meta .m-label { font-size: 13px; color: var(--text-3); }

/* Hero 视觉面板 */
.hero-visual { position: relative; }
.hero-panel {
  position: relative; z-index: 2;
  border-radius: var(--radius-lg); padding: 30px;
  background: rgba(255,255,255,.045);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(24px); backdrop-filter: blur(24px);
  box-shadow: var(--shadow);
}
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.panel-head .dots { display: flex; gap: 6px; }
.panel-head .dots i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.16); }
.panel-head .dots i:nth-child(1) { background: #f87171; }
.panel-head .dots i:nth-child(2) { background: #fbbf24; }
.panel-head .dots i:nth-child(3) { background: #34d399; }
.panel-tag { font-size: 12px; font-family: ui-monospace, monospace; color: var(--text-3); }
.code-lines { display: grid; gap: 12px; font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 13px; }
.code-line { display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-radius: 10px; background: rgba(0,0,0,.28); border: 1px solid rgba(255,255,255,.05); }
.code-line .ln { color: var(--text-3); width: 16px; font-size: 12px; }
.code-line .tk-k { color: #c4b5fd; }
.code-line .tk-v { color: #7dd3fc; }
.code-line .tk-s { color: #86efac; }
.code-line .tk-f { color: #fca5a5; }
.code-line .bar { color: #64748b; }
.hero-panel-foot { display: flex; justify-content: space-between; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 12.5px; color: var(--text-3); font-family: ui-monospace, monospace; }
.hero-float {
  position: absolute; z-index: 3; border-radius: 16px;
  background: rgba(15, 22, 46, .85); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  border: 1px solid var(--border); box-shadow: var(--shadow);
  padding: 14px 18px; display: flex; align-items: center; gap: 12px;
}
.hero-float .f-icon {
  width: 40px; height: 40px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  color: #fff; background: var(--grad); flex-shrink: 0;
}
.hero-float .f-title { font-size: 13.5px; font-weight: 700; }
.hero-float .f-sub { font-size: 12px; color: var(--text-3); }
.hero-float.f1 { top: -30px; right: -14px; animation: floaty 5.5s ease-in-out infinite; }
.hero-float.f2 { bottom: -24px; left: -20px; animation: floaty 6.5s ease-in-out -2s infinite; }
.hero-float.f3 { bottom: 26%; left: -36px; animation: floaty 6s ease-in-out -4s infinite; display: flex; }
.hero-float .f3-ring { position: relative; width: 46px; height: 46px; flex-shrink: 0; }
.hero-float .f3-ring svg { transform: rotate(-90deg); }
.hero-float .f3-ring .ring-bg { stroke: rgba(255,255,255,.1); }
.hero-float .f3-ring .ring-fg { stroke: url(#ringGrad); stroke-linecap: round; transition: stroke-dashoffset 1s ease; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

/* ---------- 客户/技术条 ---------- */
.tech-strip {
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,.015); padding: 26px 0;
  overflow: hidden; position: relative;
}
.tech-strip .strip-inner {
  display: flex; align-items: center; gap: 56px; white-space: nowrap;
  width: max-content; animation: marquee 30s linear infinite;
}
.tech-strip:hover .strip-inner { animation-play-state: paused; }
.tech-strip span { display: inline-flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 600; color: var(--text-3); letter-spacing: .4px; }
.tech-strip .sep { opacity: .4; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- 服务卡片 ---------- */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.service-card {
  position: relative; border-radius: var(--radius); padding: 30px 26px;
  background: var(--surface); border: 1px solid var(--border);
  transition: transform .35s cubic-bezier(.2, .7, .3, 1), border-color .35s, box-shadow .35s, background .35s;
  overflow: hidden;
}
.service-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .45s;
}
.service-card:hover { transform: translateY(-8px); border-color: rgba(99,102,241,.45); background: var(--surface-2); box-shadow: var(--shadow), 0 0 34px rgba(99,102,241,.14); }
.service-card:hover::before { transform: scaleX(1); }
.service-ico {
  width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center;
  color: #fff; background: var(--grad); box-shadow: 0 8px 24px rgba(99,102,241,.35);
  margin-bottom: 20px; transition: transform .35s;
}
.service-card:hover .service-ico { transform: scale(1.08) rotate(-4deg); }
.service-card h3 { font-size: 19px; margin-bottom: 10px; }
.service-card p { font-size: 14.5px; color: var(--text-2); margin-bottom: 18px; min-height: 64px; }
.service-card .card-link { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 600; color: var(--primary-2); }
.service-card .card-link svg { transition: transform .25s; }
.service-card:hover .card-link svg { transform: translateX(4px); }
.service-card .sc-tag { position: absolute; top: 22px; right: 22px; font-size: 12px; color: var(--text-3); font-family: ui-monospace, monospace; }

/* ---------- 案例卡片 ---------- */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card {
  border-radius: var(--radius); overflow: hidden;
  background: var(--surface); border: 1px solid var(--border);
  transition: transform .35s, border-color .35s, box-shadow .35s;
}
.case-card:hover { transform: translateY(-8px); border-color: rgba(99,102,241,.4); box-shadow: var(--shadow), 0 0 40px rgba(99,102,241,.12); }
.case-cover {
  height: 172px; display: flex; align-items: center; justify-content: center; color: #fff;
  position: relative; overflow: hidden;
}
.case-cover::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(255,255,255,.25), transparent 55%),
              linear-gradient(180deg, transparent 40%, rgba(0,0,0,.28));
}
.case-cover .cover-ico {
  width: 64px; height: 64px; border-radius: 20px; background: rgba(255,255,255,.16);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.28);
  display: flex; align-items: center; justify-content: center; z-index: 1;
  transition: transform .35s;
}
.case-card:hover .cover-ico { transform: scale(1.12) rotate(-6deg); }
.case-body { padding: 24px 24px 26px; }
.case-cat { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 1px; color: var(--accent); text-transform: uppercase; margin-bottom: 10px; }
.case-body h3 { font-size: 18px; margin-bottom: 8px; }
.case-body p { font-size: 14px; color: var(--text-2); margin-bottom: 16px; }
.case-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.case-tags span { padding: 4px 11px; border-radius: 999px; font-size: 12px; color: var(--text-2); background: var(--surface-2); border: 1px solid var(--border); }

/* ---------- 数据统计 ---------- */
.stats-band {
  border-radius: var(--radius-lg); border: 1px solid var(--border);
  background: var(--grad-soft); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  padding: 48px 40px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px;
  position: relative; overflow: hidden;
}
.stats-band::before {
  content: ""; position: absolute; inset: -60% -20% auto auto; width: 340px; height: 340px;
  background: radial-gradient(circle, rgba(139,92,246,.28), transparent 65%); border-radius: 50%;
}
.stat { text-align: center; position: relative; }
.stat-num { font-size: clamp(34px, 4vw, 52px); font-weight: 900; letter-spacing: -.02em; }
.stat-num .suffix { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat-label { font-size: 14px; color: var(--text-2); margin-top: 6px; }

/* ---------- 服务详情页 ---------- */
.page-hero {
  padding: calc(var(--header-h) + 64px) 0 56px; position: relative;
}
.page-hero .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text-3); margin-bottom: 22px; }
.page-hero .breadcrumb a:hover { color: var(--accent); }
.page-hero .breadcrumb .sep { opacity: .5; }
.detail-layout { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: start; }
.detail-main { display: grid; gap: 44px; }
.detail-card {
  border-radius: var(--radius); padding: 34px 32px;
  background: var(--surface); border: 1px solid var(--border);
}
.detail-card h2 { display: flex; align-items: center; gap: 12px; font-size: 22px; margin-bottom: 20px; }
.detail-card h2 svg { color: var(--primary-2); }
.detail-card p { color: var(--text-2); font-size: 15.5px; }
.bullet-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 22px; }
.bullet-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 15px; color: var(--text-2); }
.bullet-list li svg { color: var(--success); margin-top: 4px; flex-shrink: 0; }
.steps { display: grid; gap: 0; }
.step { display: flex; gap: 18px; position: relative; padding-bottom: 28px; }
.step:last-child { padding-bottom: 0; }
.step::before { content: ""; position: absolute; left: 15px; top: 38px; bottom: 4px; width: 2px; background: linear-gradient(var(--border-strong), transparent); }
.step:last-child::before { display: none; }
.step-num {
  width: 32px; height: 32px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 800; color: #fff; background: var(--grad);
  box-shadow: 0 6px 16px rgba(99,102,241,.35);
}
.step h3 { font-size: 16.5px; margin-bottom: 4px; }
.step p { font-size: 14px; color: var(--text-3); }
.side-sticky { position: sticky; top: calc(var(--header-h) + 24px); display: grid; gap: 20px; }
.cta-card {
  border-radius: var(--radius); padding: 32px 28px; color: #fff;
  background: linear-gradient(140deg, #4f46e5 0%, #7c3aed 50%, #0891b2 100%);
  box-shadow: 0 24px 60px rgba(79,70,229,.35); overflow: hidden; position: relative;
}
.cta-card::after { content: ""; position: absolute; inset: auto -40px -60px auto; width: 200px; height: 200px; border-radius: 50%; background: rgba(255,255,255,.12); }
.cta-card h3 { font-size: 21px; margin-bottom: 10px; }
.cta-card p { font-size: 14.5px; opacity: .88; margin-bottom: 20px; }
.cta-card .btn-white { background: #fff; color: #4f46e5; box-shadow: 0 10px 26px rgba(0,0,0,.22); }
.cta-card .btn-white:hover { transform: translateY(-2px); }
.side-card {
  border-radius: var(--radius); padding: 26px 24px;
  background: var(--surface); border: 1px solid var(--border);
}
.side-card h4 { font-size: 16px; margin-bottom: 14px; display: flex; align-items: center; gap: 9px; }
.side-card h4 svg { color: var(--primary-2); }
.side-card .contact-row { display: flex; align-items: center; gap: 11px; font-size: 14px; color: var(--text-2); margin-bottom: 10px; }
.side-card .contact-row svg { color: var(--accent); flex-shrink: 0; }
.side-nav a { display: flex; align-items: center; justify-content: space-between; padding: 12px 14px; border-radius: 10px; font-size: 14.5px; color: var(--text-2); transition: background .25s, color .25s, padding-left .25s; }
.side-nav a:hover, .side-nav a.active { background: var(--surface-2); color: var(--text); padding-left: 19px; }
.side-nav a.active { color: var(--primary-2); font-weight: 700; }

/* ---------- 案例筛选 ---------- */
.filter-bar { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 40px; }
.filter-chip {
  padding: 9px 22px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--text-2);
  border: 1px solid var(--border); transition: all .25s; background: var(--surface);
}
.filter-chip:hover { border-color: rgba(99,102,241,.5); color: var(--text); }
.filter-chip.active { color: #fff; background: var(--grad); border-color: transparent; box-shadow: 0 8px 22px rgba(99,102,241,.35); }

/* ---------- 关于页 ---------- */
.about-story { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-visual { position: relative; }
.about-card {
  border-radius: var(--radius-lg); padding: 40px 34px;
  background: rgba(255,255,255,.045); border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); box-shadow: var(--shadow);
}
.about-card .a-num { font-size: 46px; font-weight: 900; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.about-card .a-label { font-size: 14px; color: var(--text-2); margin-top: 4px; }
.about-card .a-row { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-top: 26px; }
.about-card .a-quote { margin-top: 24px; padding-top: 22px; border-top: 1px solid var(--border); font-size: 15px; color: var(--text-2); font-style: italic; }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.value-card { border-radius: var(--radius); padding: 28px 24px; background: var(--surface); border: 1px solid var(--border); transition: transform .3s, border-color .3s; }
.value-card:hover { transform: translateY(-6px); border-color: rgba(34,211,238,.4); }
.value-card .v-ico { color: var(--accent); margin-bottom: 16px; }
.value-card h3 { font-size: 17px; margin-bottom: 8px; }
.value-card p { font-size: 14px; color: var(--text-3); }

/* ---------- 联系页 ---------- */
.contact-layout { display: grid; grid-template-columns: 1fr 1.25fr; gap: 40px; align-items: start; }
.contact-info-card {
  border-radius: var(--radius); padding: 34px 30px;
  background: var(--surface); border: 1px solid var(--border);
}
.contact-info-card h3 { font-size: 20px; margin-bottom: 18px; }
.contact-item { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border); }
.contact-item:last-child { border-bottom: none; }
.contact-item .c-ico {
  width: 44px; height: 44px; border-radius: 13px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  color: #fff; background: var(--grad); box-shadow: 0 8px 20px rgba(99,102,241,.3);
}
.contact-item .c-label { font-size: 12.5px; color: var(--text-3); }
.contact-item .c-value { font-size: 15px; font-weight: 600; }
.form-card {
  border-radius: var(--radius-lg); padding: 38px 36px;
  background: rgba(255,255,255,.045); border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); box-shadow: var(--shadow);
}
.form-card h3 { font-size: 22px; margin-bottom: 6px; }
.form-card .form-sub { font-size: 14px; color: var(--text-3); margin-bottom: 26px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 7px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 13.5px; font-weight: 600; color: var(--text-2); }
.form-group label .req { color: var(--danger); }
.form-control {
  padding: 13px 16px; border-radius: 12px; font-size: 15px; color: var(--text);
  background: rgba(0,0,0,.25); border: 1px solid var(--border);
  transition: border-color .25s, box-shadow .25s, background .25s;
  font-family: inherit; width: 100%;
}
.form-control:focus { outline: none; border-color: rgba(99,102,241,.65); box-shadow: 0 0 0 4px rgba(99,102,241,.14); background: rgba(0,0,0,.32); }
.form-control::placeholder { color: var(--text-3); }
select.form-control { appearance: none; -webkit-appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--text-3) 50%), linear-gradient(135deg, var(--text-3) 50%, transparent 50%); background-position: calc(100% - 22px) 50%, calc(100% - 17px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }
textarea.form-control { resize: vertical; min-height: 120px; }
.form-msg { display: none; padding: 14px 18px; border-radius: 12px; font-size: 14.5px; margin-top: 18px; }
.form-msg.ok { display: block; color: var(--success); background: rgba(52,211,153,.1); border: 1px solid rgba(52,211,153,.3); }
.form-msg.err { display: block; color: var(--danger); background: rgba(248,113,113,.1); border: 1px solid rgba(248,113,113,.3); }

/* ---------- CTA 区块 ---------- */
.cta-band { text-align: center; }
.cta-band .cta-inner {
  border-radius: var(--radius-lg); padding: 72px 40px; position: relative; overflow: hidden;
  background: linear-gradient(140deg, rgba(79,70,229,.18), rgba(8,145,178,.12));
  border: 1px solid var(--border); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
}
.cta-band h2 { font-size: clamp(26px, 3.4vw, 42px); margin-bottom: 14px; }
.cta-band p { color: var(--text-2); margin-bottom: 32px; }
.cta-band .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--border); background: rgba(7, 10, 22, .6); margin-top: 40px; }
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 40px;
  padding: 64px 24px 48px; max-width: var(--maxw);
}
.footer-brand p { margin-top: 14px; color: var(--text-3); font-size: 14px; }
.footer-brand p.footer-desc { font-size: 13.5px; }
.footer-col h4 { font-size: 15px; margin-bottom: 18px; color: var(--text); letter-spacing: .5px; }
.footer-col a { display: block; padding: 6px 0; font-size: 14.5px; color: var(--text-2); transition: color .25s, padding-left .25s; }
.footer-col a:hover { color: var(--accent); padding-left: 5px; }
.footer-contact p { display: flex; align-items: flex-start; gap: 11px; font-size: 14px; color: var(--text-2); padding: 5px 0; }
.footer-contact p svg { color: var(--accent); margin-top: 5px; flex-shrink: 0; }
.footer-bottom { border-top: 1px solid var(--border); padding: 22px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; color: var(--text-3); }
.footer-bottom-inner a { color: var(--text-3); transition: color .25s; }
.footer-bottom-inner a:hover { color: var(--accent); }
.footer-meta { display: inline-flex; align-items: center; gap: 16px; }
.footer-admin { display: inline-flex; align-items: center; gap: 6px; }
.footer-admin svg { color: var(--accent); }

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  width: 46px; height: 46px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center; color: #fff;
  background: var(--grad); box-shadow: var(--shadow-glow);
  opacity: 0; visibility: hidden; transform: translateY(14px);
  transition: opacity .3s, transform .3s, visibility .3s;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { transform: translateY(-3px); }

/* ---------- 滚动显现动效 ---------- */
/* 仅当 JS 可用时才隐藏（html 上由 header.php 注入 js 类），无 JS 时内容直接可见，保障渐进增强 */
html.js .reveal { opacity: 0; transform: translateY(34px); transition: opacity .8s cubic-bezier(.16, .8, .3, 1), transform .8s cubic-bezier(.16, .8, .3, 1); will-change: opacity, transform; }
html.js .reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js .reveal { opacity: 1; transform: none; transition: none; }
  .orb, .hero-float, .tech-strip .strip-inner { animation: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; gap: 72px; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .about-story { grid-template-columns: 1fr; gap: 40px; }
  .contact-layout { grid-template-columns: 1fr; gap: 32px; }
  .detail-layout { grid-template-columns: 1fr; }
  .side-sticky { position: static; }
  .about-card .a-row { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0; z-index: 99;
    flex-direction: column; align-items: stretch; gap: 4px;
    padding: 20px 24px 28px;
    background: rgba(11, 15, 30, .96); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-108%); transition: transform .4s cubic-bezier(.2, .7, .3, 1);
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav a { padding: 14px 16px; font-size: 16px; }
  .main-nav .nav-cta { margin: 12px 0 0; text-align: center; }
  .stats-band { grid-template-columns: repeat(2, 1fr); padding: 36px 22px; gap: 26px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; padding: 48px 24px 36px; }
  .bullet-list { grid-template-columns: 1fr; }
  .hero-float.f3 { display: none; }
  .code-line { font-size: 12px; }
}
@media (max-width: 520px) {
  .services-grid, .cases-grid, .value-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .hero-meta { gap: 22px; }
  .stats-band { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .case-cover { height: 150px; }
}

/* 无页面过渡基础 */
.page-enter { animation: pageIn .6s cubic-bezier(.16, .8, .3, 1) both; }
@keyframes pageIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }