/* =================================================
   适途汽车科技(长春) 官网主样式
   科技感 / 深色 + 渐变 / 高端工业感
================================================= */

* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #050b1a;
  --bg-2: #0a1228;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-2: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.1);
  --text: #e7ecf3;
  --text-2: #a0aec0;
  --brand: #00d4ff;
  --brand-2: #6e8eff;
  --accent: #ff7e3a;
  --grad: linear-gradient(120deg, #00d4ff 0%, #6e8eff 50%, #a86eff 100%);
  --grad-warm: linear-gradient(120deg, #ff7e3a 0%, #ffb86c 100%);
  --shadow: 0 30px 80px -20px rgba(0, 212, 255, 0.25);
}

html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: 0.2s; }
img { max-width: 100%; display: block; }

.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

/* ============ 导航 ============ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(5, 11, 26, 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 80px;
}
.logo { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.logo img { height: 64px; width: auto; display: block; }
.logo-mark {
  width: 40px; height: 40px; border-radius: 12px;
  background: var(--grad);
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; color: #fff; letter-spacing: -1px;
  box-shadow: 0 8px 20px -6px rgba(0, 212, 255, 0.6);
}
.logo-text { display: flex; flex-direction: column; font-size: 16px; line-height: 1.2; }
.logo-text small { font-size: 10px; color: var(--text-2); font-weight: 400; letter-spacing: 0.5px; }

.nav { display: flex; gap: 28px; }
.nav a { font-size: 14.5px; color: var(--text-2); padding: 6px 0; position: relative; }
.nav a:hover, .nav a.active { color: var(--text); }
.nav a.active::after {
  content: ""; position: absolute; bottom: -4px; left: 50%; transform: translateX(-50%);
  width: 20px; height: 2px; background: var(--grad); border-radius: 2px;
}

.btn-cta {
  background: var(--grad); color: #fff !important;
  padding: 9px 20px; border-radius: 10px; font-size: 13.5px; font-weight: 600;
  box-shadow: 0 8px 20px -8px rgba(0, 212, 255, 0.6);
}
.mobile-toggle { display: none; background: none; border: 0; color: var(--text); font-size: 24px; cursor: pointer; }

/* ============ HERO ============ */
.hero { position: relative; padding: 80px 0 100px; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 500px at 80% 10%, rgba(0, 212, 255, 0.18), transparent 60%),
    radial-gradient(700px 400px at 10% 90%, rgba(110, 142, 255, 0.18), transparent 60%),
    linear-gradient(180deg, #0a1228 0%, #050b1a 100%);
  z-index: -1;
}
.hero-bg::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}
.hero-grid {
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: center;
}
.hero-tag {
  display: inline-block; padding: 6px 14px; border-radius: 100px;
  background: rgba(0, 212, 255, 0.1); border: 1px solid rgba(0, 212, 255, 0.3);
  font-size: 12.5px; color: var(--brand);
}
.hero h1 {
  font-size: clamp(36px, 4.6vw, 60px);
  line-height: 1.15; margin: 20px 0 18px;
  font-weight: 800; letter-spacing: -0.5px;
}
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { color: var(--text-2); font-size: 16px; max-width: 600px; }
.hero-sub strong { color: var(--text); }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 26px; border-radius: 12px;
  font-size: 15px; font-weight: 600; cursor: pointer; border: 0;
  transition: 0.25s;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 12px 28px -10px rgba(0, 212, 255, 0.55); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost {
  background: rgba(255,255,255,0.06); color: var(--text);
  border: 1px solid var(--line);
}
.btn-ghost:hover { background: rgba(255,255,255,0.12); }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 40px;
  padding-top: 30px; border-top: 1px solid var(--line);
}
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 30px; font-weight: 800; color: var(--brand); }
.hero-stats span { font-size: 13px; color: var(--text-2); }

/* 右侧 3D 卡片 */
.hero-visual {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  position: relative;
}
.car-card {
  position: relative; aspect-ratio: 1/1;
  background: linear-gradient(160deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid var(--line); border-radius: 20px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  overflow: hidden; transition: 0.3s;
}
.car-card:hover { transform: translateY(-6px); border-color: rgba(0,212,255,0.4); }
.car-glow {
  position: absolute; width: 80%; height: 80%;
  background: radial-gradient(circle, rgba(0,212,255,0.3), transparent 60%);
  filter: blur(20px); opacity: 0.4;
}
.car-icon { font-size: 56px; margin-bottom: 12px; }
.car-tag { font-size: 14px; color: var(--text-2); position: relative; }
.car-card-1 { animation: float 5s ease-in-out infinite; }
.car-card-2 { animation: float 5s ease-in-out infinite 1.2s; }
.car-card-3 { animation: float 5s ease-in-out infinite 2.4s; }
.car-card-4 { animation: float 5s ease-in-out infinite 3.6s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ============ 共用 section ============ */
.section { padding: 100px 0; position: relative; }
.kicker {
  display: inline-block; font-size: 12px; letter-spacing: 2.5px;
  color: var(--brand); font-weight: 700; margin-bottom: 14px;
  padding: 4px 10px; background: rgba(0,212,255,0.08); border-radius: 4px;
}
.section-head { text-align: center; max-width: 760px; margin: 0 auto 60px; }
.section-head h2 {
  font-size: clamp(28px, 3vw, 42px); font-weight: 800; letter-spacing: -0.5px;
  margin-bottom: 14px;
}
.section-head p { color: var(--text-2); font-size: 16px; }

/* ============ Logo Wall ============ */
.logo-wall {
  padding: 36px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.01);
}
.logo-title {
  text-align: center; font-size: 13px; color: var(--text-2);
  letter-spacing: 1px; margin-bottom: 24px;
}
.logo-grid {
  display: grid; grid-template-columns: repeat(8, 1fr); gap: 30px;
  align-items: center;
}
.logo-grid span {
  text-align: center; font-size: 14px; font-weight: 600;
  color: var(--text-2); opacity: 0.7;
  padding: 14px 8px; border: 1px solid var(--line); border-radius: 8px;
  transition: 0.3s;
}
.logo-grid span:hover { opacity: 1; color: var(--brand); border-color: rgba(0,212,255,0.3); }

/* ============ 双核心服务 ============ */
.services { background: linear-gradient(180deg, var(--bg) 0%, #061224 100%); }
.service-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.service-card {
  padding: 36px 30px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
  border: 1px solid var(--line); border-radius: 20px;
  transition: 0.3s; position: relative; overflow: hidden;
}
.service-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--grad); transform: scaleX(0); transform-origin: left;
  transition: 0.4s;
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover { border-color: rgba(0,212,255,0.3); transform: translateY(-4px); }
.service-icon { font-size: 38px; margin-bottom: 14px; }
.service-card h3 { font-size: 22px; margin-bottom: 6px; font-weight: 700; }
.service-sub { font-size: 13px; color: var(--brand); margin-bottom: 16px; letter-spacing: 0.5px; }
.service-card ul { list-style: none; margin-bottom: 22px; }
.service-card li {
  position: relative; padding-left: 22px; margin-bottom: 10px;
  color: var(--text-2); font-size: 14.5px;
}
.service-card li::before {
  content: "▸"; position: absolute; left: 0; top: 0; color: var(--brand);
  font-weight: 700;
}
.card-link {
  color: var(--brand); font-weight: 600; font-size: 14.5px;
  display: inline-flex; align-items: center; gap: 6px;
}
.card-link:hover { gap: 10px; }

/* ============ SLM 平台特色 ============ */
.platform-feature {
  background:
    radial-gradient(800px 400px at 80% 50%, rgba(168,110,255,0.15), transparent 60%),
    linear-gradient(180deg, #061224 0%, #050b1a 100%);
}
.platform-grid {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: center;
}
.platform-text h2 {
  font-size: clamp(28px, 3vw, 40px); margin-bottom: 16px; line-height: 1.2;
}
.platform-text > p { color: var(--text-2); margin-bottom: 26px; font-size: 15.5px; }
.platform-tags {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px 24px; margin-bottom: 30px;
}
.platform-tags span {
  font-size: 14px; color: var(--text); padding: 6px 0;
}

/* 流程图 */
.platform-visual {
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.01));
  border: 1px solid var(--line); border-radius: 24px;
  padding: 36px;
}
.step-pipeline {
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
}
.step {
  flex: 1; min-width: 110px;
  background: rgba(0,212,255,0.08); border: 1px solid rgba(0,212,255,0.25);
  border-radius: 14px; padding: 18px 14px; text-align: center;
  position: relative;
}
.step span {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--grad); color: #fff; font-weight: 700; font-size: 13px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 14px -4px rgba(0,212,255,0.6);
}
.step p { color: var(--text); font-size: 14px; font-weight: 600; }
.step small { color: var(--text-2); font-size: 12px; }
.step.last { background: rgba(255,126,58,0.1); border-color: rgba(255,126,58,0.35); }
.step.last span { background: var(--grad-warm); }
.arrow {
  width: 18px; height: 2px;
  background: linear-gradient(90deg, var(--brand), transparent);
  position: relative;
}
.arrow::after {
  content: "▶"; position: absolute; right: -2px; top: -8px;
  color: var(--brand); font-size: 10px;
}

/* ============ 行业 ============ */
.industry-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.industry-card {
  padding: 32px 26px;
  background: linear-gradient(160deg, rgba(255,255,255,0.05), rgba(255,255,255,0.01));
  border: 1px solid var(--line); border-radius: 18px;
  transition: 0.3s;
}
.industry-card:hover {
  border-color: rgba(0,212,255,0.4); transform: translateY(-4px);
  background: linear-gradient(160deg, rgba(0,212,255,0.08), rgba(0,212,255,0.02));
}
.industry-icon { font-size: 38px; margin-bottom: 14px; }
.industry-card h4 { font-size: 18px; margin-bottom: 8px; }
.industry-card p { color: var(--text-2); font-size: 14px; }

/* ============ 流程 ============ */
.process-list {
  list-style: none; display: grid; grid-template-columns: repeat(6, 1fr); gap: 0;
  counter-reset: process;
}
.process-list li {
  padding: 28px 18px; text-align: center; position: relative;
  border-right: 1px solid var(--line);
}
.process-list li:last-child { border-right: 0; }
.process-list li span {
  display: inline-flex; align-items: center; justify-content: center;
  width: 50px; height: 50px; border-radius: 50%;
  background: var(--grad); color: #fff; font-weight: 800; font-size: 18px;
  margin-bottom: 14px;
  box-shadow: 0 10px 20px -8px rgba(0,212,255,0.5);
}
.process-list li h4 { font-size: 16px; margin-bottom: 6px; }
.process-list li p { color: var(--text-2); font-size: 13.5px; }

/* ============ CTA ============ */
.cta {
  background:
    radial-gradient(800px 400px at 50% 30%, rgba(0,212,255,0.12), transparent 60%);
}
.cta-box {
  background: linear-gradient(135deg, rgba(0,212,255,0.08) 0%, rgba(168,110,255,0.08) 100%);
  border: 1px solid var(--line); border-radius: 24px;
  padding: 60px 40px; text-align: center;
}
.cta-box h2 { font-size: clamp(26px, 3vw, 36px); margin-bottom: 12px; }
.cta-box > p { color: var(--text-2); margin-bottom: 30px; }
.cta-form {
  display: grid; grid-template-columns: 1fr 1fr 1.2fr auto; gap: 12px; max-width: 900px; margin: 0 auto;
}
.cta-form input, .cta-form select {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--line);
  border-radius: 10px; padding: 14px 16px; color: var(--text);
  font-family: inherit; font-size: 14.5px;
}
.cta-form input::placeholder { color: var(--text-2); }
.cta-form input:focus, .cta-form select:focus {
  outline: none; border-color: var(--brand);
}

/* ============ Footer ============ */
.site-footer {
  background: #030813; border-top: 1px solid var(--line);
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 40px; border-bottom: 1px solid var(--line);
}
.site-footer h5 { font-size: 14px; margin-bottom: 16px; color: var(--brand); }
.site-footer a {
  display: block; padding: 6px 0; color: var(--text-2); font-size: 14px;
}
.site-footer a:hover { color: var(--text); padding-left: 6px; }
.site-footer p { color: var(--text-2); font-size: 14px; margin: 8px 0; }
.contact-line { font-size: 13px; }

.logo-footer { margin-bottom: 16px; }
.footer-bottom {
  padding-top: 20px; font-size: 13px;
  color: var(--text-2); text-align: center;
}
.footer-bottom p { margin: 4px 0; }

/* ============ 内页通用 ============ */
.page-banner {
  padding: 100px 0 60px;
  background:
    radial-gradient(700px 350px at 20% 50%, rgba(0,212,255,0.18), transparent 60%),
    linear-gradient(180deg, #0a1228 0%, #050b1a 100%);
  text-align: center; border-bottom: 1px solid var(--line);
}
.page-banner .breadcrumbs {
  font-size: 13px; color: var(--text-2); margin-bottom: 14px;
}
.page-banner .breadcrumbs a:hover { color: var(--brand); }
.page-banner h1 { font-size: clamp(32px, 4vw, 50px); font-weight: 800; }
.page-banner p { color: var(--text-2); max-width: 720px; margin: 16px auto 0; font-size: 16px; }

.content-section { padding: 80px 0; }
.content-block h2 {
  font-size: clamp(24px, 2.5vw, 34px); margin-bottom: 18px; font-weight: 800;
}
.content-block p { color: var(--text-2); font-size: 15.5px; margin-bottom: 14px; }
.content-block ul { color: var(--text-2); padding-left: 24px; margin-bottom: 18px; }
.content-block li { margin-bottom: 8px; }

/* ============ 关于我们模块 ============ */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
}
.about-grid img {
  border-radius: 20px; border: 1px solid var(--line);
}
.about-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  margin-top: 36px;
}
.about-stats div {
  padding: 20px;
  background: linear-gradient(160deg, rgba(255,255,255,0.05), rgba(255,255,255,0.01));
  border: 1px solid var(--line); border-radius: 14px; text-align: center;
}
.about-stats strong {
  display: block; font-size: 26px; color: var(--brand); font-weight: 800;
}
.about-stats span { font-size: 12px; color: var(--text-2); }

/* ============ 时间线 ============ */
.timeline {
  position: relative; padding-left: 30px; border-left: 2px solid var(--line);
}
.timeline-item { position: relative; padding-bottom: 36px; }
.timeline-item::before {
  content: ""; position: absolute; left: -38px; top: 6px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--grad); box-shadow: 0 0 0 4px rgba(0,212,255,0.15);
}
.timeline-year { color: var(--brand); font-weight: 700; margin-bottom: 4px; }
.timeline-item h4 { font-size: 18px; margin-bottom: 4px; }
.timeline-item p { color: var(--text-2); font-size: 14.5px; }

/* ============ 产品/案例卡片 ============ */
.products-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.product-card {
  background: linear-gradient(160deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
  border: 1px solid var(--line); border-radius: 18px;
  overflow: hidden; transition: 0.3s;
}
.product-card:hover {
  transform: translateY(-6px); border-color: rgba(0,212,255,0.4);
  box-shadow: var(--shadow);
}
.product-thumb {
  height: 180px;
  background: linear-gradient(135deg, rgba(0,212,255,0.3), rgba(110,142,255,0.3));
  display: flex; align-items: center; justify-content: center; font-size: 60px;
  position: relative; overflow: hidden;
}
.product-thumb::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.2), transparent 50%);
}
.product-card-body { padding: 24px; }
.product-card-body h3 { font-size: 19px; margin-bottom: 10px; font-weight: 700; }
.product-card-body p { color: var(--text-2); font-size: 14px; margin-bottom: 16px; }
.product-tag { display: inline-block; padding: 3px 10px; background: rgba(0,212,255,0.1); color: var(--brand); border-radius: 100px; font-size: 12px; }

/* ============ 联系信息 ============ */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px;
}
.contact-info-card {
  display: flex; gap: 14px; padding: 22px;
  background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 14px;
  margin-bottom: 16px;
}
.contact-info-icon {
  width: 46px; height: 46px; border-radius: 12px;
  background: rgba(0,212,255,0.12); display: flex; align-items: center; justify-content: center;
  font-size: 22px; flex-shrink: 0;
}
.contact-info-card h4 { font-size: 15px; margin-bottom: 4px; }
.contact-info-card p { color: var(--text-2); font-size: 14px; }

.contact-form {
  background: linear-gradient(160deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
  border: 1px solid var(--line); border-radius: 18px; padding: 32px;
}
.contact-form label { display: block; margin-bottom: 6px; font-size: 13.5px; color: var(--text-2); }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%; background: rgba(255,255,255,0.04);
  border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; color: var(--text);
  font-family: inherit; font-size: 14.5px; margin-bottom: 16px;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  outline: none; border-color: var(--brand);
}
.contact-form textarea { min-height: 100px; resize: vertical; }
.contact-form button { width: 100%; }

/* ============ 新闻列表 ============ */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card {
  background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 16px;
  overflow: hidden; transition: 0.3s;
}
.news-card:hover { transform: translateY(-4px); border-color: rgba(0,212,255,0.4); }
.news-thumb {
  height: 160px;
  background: linear-gradient(135deg, rgba(110,142,255,0.3), rgba(168,110,255,0.3));
  position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center; font-size: 60px;
}
.news-body { padding: 22px; }
.news-date { color: var(--brand); font-size: 12px; margin-bottom: 8px; }
.news-body h3 { font-size: 17px; margin-bottom: 8px; }
.news-body p { color: var(--text-2); font-size: 13.5px; }

/* ============ 客户 Logo 墙 ============ */
.client-wall {
  padding: 80px 0;
}
.client-wall .section-head { margin-bottom: 50px; }
.client-logo-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}
.client-logo-card {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 14px;
  padding: 18px 14px 14px;
  min-height: 110px;
  transition: 0.3s;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.client-logo-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad);
  transform: scaleX(0); transform-origin: left;
  transition: 0.4s;
}
.client-logo-card:hover::before { transform: scaleX(1); }
.client-logo-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: 0 16px 36px -12px rgba(0, 212, 255, 0.35);
}
.client-logo-card .logo-svg {
  width: 100%; max-width: 130px; height: 50px;
  display: block;
}
.client-logo-name {
  margin-top: 6px;
  font-size: 11px;
  color: #64748b;
  letter-spacing: 0.5px;
  font-weight: 500;
  opacity: 0; transition: 0.3s;
}
.client-logo-card:hover .client-logo-name { opacity: 1; color: var(--brand); }

@media (max-width: 1024px) {
  .client-logo-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 768px) {
  .client-logo-grid { grid-template-columns: repeat(3, 1fr); }
  .client-wall { padding: 60px 0; }
  .nav-wrap { height: 72px; }
  .logo img { height: 54px; }
}
@media (max-width: 480px) {
  .client-logo-grid { grid-template-columns: repeat(2, 1fr); }
  .logo img { height: 46px; }
}

/* ============ 细节增强：滚动态 / 淡入 / 表单反馈 ============ */

/* hero 数字统一渐变（替代内联样式） */
.hero-stats strong {
  display: block;
  background: linear-gradient(90deg, #00d4ff, #6e8eff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
/* 导航热点项 */
.nav-hot { color: var(--brand); font-weight: 700; }
.nav-hot:hover { text-shadow: 0 0 14px rgba(0, 212, 255, 0.5); }
/* 页脚 logo 尺寸独立控制 */
.logo-footer img { height: 40px; width: auto; opacity: 0.92; transition: opacity 0.25s; }
.logo-footer:hover img { opacity: 1; }

/* 顶部导航滚动后加深 */
.site-header { transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease; }
.site-header.scrolled {
  background: rgba(5, 11, 26, 0.96);
  border-bottom-color: rgba(0, 212, 255, 0.25);
  box-shadow: 0 12px 30px -18px rgba(0, 0, 0, 0.9);
}

/* 滚动淡入 */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.reveal-in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* 表单提交后的联系引导 */
.form-success {
  text-align: center; padding: 40px 28px;
  background: linear-gradient(160deg, rgba(0,212,255,0.10), rgba(110,142,255,0.05));
  border: 1px solid rgba(0,212,255,0.35); border-radius: 18px;
}
.form-success .fs-icon {
  width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 50%;
  background: linear-gradient(135deg, #00d4ff, #6e8eff); color: #050b1a;
  font-size: 30px; font-weight: 700; line-height: 56px;
}
.form-success h4 { color: #fff; font-size: 20px; margin-bottom: 10px; }
.form-success p { color: var(--text-2); font-size: 14px; margin-bottom: 18px; }
.form-success .fs-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.form-success .fs-tip { margin-top: 18px; margin-bottom: 0; font-size: 12.5px; color: var(--text-2); }

/* 移动端汉堡按钮状态 */
.mobile-toggle { transition: color 0.2s ease, transform 0.2s ease; }
.mobile-toggle[aria-expanded="true"] { color: var(--brand); transform: rotate(90deg); }