/* =========================================================================
 * 西安未来智造 - 区域分站共享基础样式
 * 字体：Noto Sans SC + ZCOOL XiaoWei + Rajdhani（全部 SIL OFL / Apache 2.0，
 *       可商用），系统字体回退，零侵权。
 * ========================================================================= */

:root {
  --radius: 14px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
  --maxw: 1200px;
  --font-base: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-display: "ZCOOL XiaoWei", "Noto Sans SC", -apple-system, sans-serif;
  --font-mono: "Rajdhani", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-base);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text, #1a2233);
  background: var(--bg, #f4f6fb);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { color: var(--primary, #0066cc); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark, #004999); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

/* ============ 顶部导航 ============ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--header-bg, rgba(255,255,255,0.92));
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border, rgba(0,0,0,0.08));
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; padding-bottom: 14px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; }
.brand .brand-mark {
  width: 36px; height: 36px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-weight: 700; font-size: 15px;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px -2px rgba(0,0,0,0.15);
}
.brand .brand-text { font-family: var(--font-display); font-size: 18px; letter-spacing: 1px; }
.brand .brand-sub { font-size: 12px; color: var(--text-mute); margin-left: 6px; padding-left: 8px; border-left: 1px solid var(--border); }

.nav { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.nav a { color: var(--text); font-weight: 500; }
.nav a:hover { color: var(--primary); }
.nav .nav-cta {
  padding: 8px 16px; border-radius: 999px; background: var(--primary); color: #fff !important;
  font-weight: 600;
  box-shadow: 0 4px 10px -2px rgba(0,0,0,0.15);
}

@media (max-width: 760px) {
  .nav { display: none; }
  .brand .brand-sub { display: none; }
}

/* ============ Hero ============ */
.hero {
  position: relative; overflow: hidden;
  padding: 80px 0 60px;
  background: var(--hero-bg);
  color: var(--hero-text, #fff);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: var(--hero-pattern, none);
  opacity: 0.6; pointer-events: none;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 14px; border-radius: 999px;
  background: var(--chip-bg, rgba(255,255,255,0.12));
  border: 1px solid var(--chip-border, rgba(255,255,255,0.25));
  font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--chip-text, #fff);
  font-family: var(--font-mono);
  margin-bottom: 18px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.15; margin: 0 0 16px;
  color: var(--hero-title, #fff);
  letter-spacing: 2px;
}
.hero h1 .accent { color: var(--accent); }
.hero .lede { font-size: 16px; max-width: 720px; line-height: 1.85; opacity: 0.92; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px;
  font-weight: 600; font-size: 14.5px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 6px 16px -4px rgba(0,0,0,0.25); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-ghost { background: transparent; color: var(--hero-title, #fff); border-color: var(--chip-border, rgba(255,255,255,0.4)); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); color: var(--hero-title, #fff); }

.hero-meta {
  display: flex; flex-wrap: wrap; gap: 24px; margin-top: 36px; padding-top: 24px;
  border-top: 1px dashed var(--meta-border, rgba(255,255,255,0.2));
  font-size: 13px; color: var(--chip-text, rgba(255,255,255,0.85));
}
.hero-meta .meta-item { display: flex; align-items: center; gap: 8px; }
.hero-meta .meta-item strong { color: var(--hero-title, #fff); font-size: 18px; font-weight: 700; font-family: var(--font-mono); }

/* ============ 通用 Section ============ */
section.section { padding: 70px 0; position: relative; }
section.section .eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--primary); margin-bottom: 12px;
  font-family: var(--font-mono);
}
section.section .eyebrow::before, section.section .eyebrow::after {
  content: ""; display: block; width: 30px; height: 1px; background: var(--primary);
}
section.section h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 38px);
  margin: 0 0 12px; color: var(--text);
  letter-spacing: 1.5px;
}
section.section h2 .accent { color: var(--primary); }
section.section .lede { color: var(--text-mute); max-width: 760px; margin: 0 0 40px; font-size: 15px; }

section.alt { background: var(--bg-alt, #eef2f9); }

/* ============ 应用领域卡片网格 ============ */
.app-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.app-card {
  padding: 22px 20px;
  background: var(--card-bg, #fff);
  border: 1px solid var(--border, rgba(0,0,0,0.06));
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.app-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 30px -16px rgba(0,0,0,0.18);
  border-color: var(--primary);
}
.app-card .ico {
  width: 44px; height: 44px; border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--primary-soft, rgba(0,102,204,0.1));
  color: var(--primary); margin-bottom: 14px;
}
.app-card h3 { font-size: 16px; margin: 0 0 6px; color: var(--text); }
.app-card p { font-size: 13.5px; color: var(--text-mute); margin: 0; line-height: 1.7; }

/* ============ 案例展示网格 ============ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
  margin-top: 28px;
}
.case-card {
  position: relative;
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card-bg, #fff);
  box-shadow: 0 10px 30px -16px rgba(0,0,0,0.25);
  transition: transform var(--transition), box-shadow var(--transition);
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -16px rgba(0,0,0,0.4);
}
.case-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}
.case-card span {
  display: block;
  padding: 12px 14px;
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
  background: var(--card-bg, #fff);
}

/* ============ 数据 / 工艺 / 实力 双栏 ============ */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 860px) { .two-col { grid-template-columns: 1fr; gap: 32px; } }
.two-col .col-img {
  border-radius: var(--radius); overflow: hidden;
  box-shadow: 0 30px 60px -30px rgba(0,0,0,0.35);
}
.two-col .col-img img { width: 100%; height: auto; }
.two-col h3 { font-family: var(--font-display); font-size: 28px; margin: 0 0 14px; color: var(--text); letter-spacing: 1px; }
.two-col p { color: var(--text-mute); margin: 0 0 14px; line-height: 1.85; }
.feature-list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.feature-list li {
  position: relative; padding-left: 22px; font-size: 14px; color: var(--text);
}
.feature-list li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--primary);
}
@media (max-width: 560px) { .feature-list { grid-template-columns: 1fr; } }

/* ============ 资质 / 标签 ============ */
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.tag {
  padding: 6px 14px; border-radius: 999px;
  font-size: 12.5px; letter-spacing: 0.05em;
  background: var(--primary-soft, rgba(0,102,204,0.08));
  color: var(--primary);
  border: 1px solid var(--primary-soft, rgba(0,102,204,0.18));
}

/* ============ 数据条 ============ */
.metric-strip {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0;
  background: var(--strip-bg, linear-gradient(135deg, var(--primary), var(--primary-dark)));
  color: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 40px -20px rgba(0,0,0,0.3);
}
.metric { padding: 28px 20px; text-align: center; border-right: 1px solid rgba(255,255,255,0.12); }
.metric:last-child { border-right: 0; }
.metric .num { font-size: 36px; font-weight: 700; font-family: var(--font-mono); letter-spacing: 1px; }
.metric .lbl { font-size: 12.5px; opacity: 0.85; margin-top: 4px; letter-spacing: 0.05em; }
@media (max-width: 600px) {
  .metric { border-right: 0; border-bottom: 1px solid rgba(255,255,255,0.12); }
  .metric:last-child { border-bottom: 0; }
}

/* ============ FAQ ============ */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 760px) { .faq-list { grid-template-columns: 1fr; } }
.faq-item {
  background: var(--card-bg, #fff);
  border: 1px solid var(--border, rgba(0,0,0,0.06));
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: var(--primary); }
.faq-item h4 { margin: 0 0 8px; font-size: 15.5px; color: var(--text); }
.faq-item p { margin: 0; font-size: 14px; color: var(--text-mute); line-height: 1.75; }

/* ============ 联系我们 ============ */
.contact-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: 36px;
  background: var(--card-bg, #fff); padding: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border, rgba(0,0,0,0.06));
  box-shadow: 0 20px 40px -20px rgba(0,0,0,0.12);
}
@media (max-width: 860px) { .contact-wrap { grid-template-columns: 1fr; padding: 24px; } }
.contact-info .ic {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--primary-soft, rgba(0,102,204,0.1));
  color: var(--primary); margin-bottom: 8px;
}
.contact-info h3 { font-family: var(--font-display); margin: 0 0 8px; font-size: 22px; letter-spacing: 1px; }
.contact-info p { margin: 0; color: var(--text-mute); }
.contact-info .info-row { display: flex; gap: 16px; padding: 14px 0; border-bottom: 1px dashed var(--border); }
.contact-info .info-row:last-child { border-bottom: 0; }
.contact-info .info-row .info-key { width: 80px; color: var(--text-mute); font-size: 13px; }
.contact-info .info-row .info-val { flex: 1; color: var(--text); font-size: 14.5px; }
.contact-form { display: grid; gap: 12px; }
.contact-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 560px) { .contact-form .form-row { grid-template-columns: 1fr; } }
.contact-form input, .contact-form textarea {
  width: 100%; padding: 12px 14px;
  font-size: 14px; color: var(--text);
  background: var(--input-bg, #f7f8fb);
  border: 1px solid var(--border, rgba(0,0,0,0.08));
  border-radius: var(--radius-sm);
  font-family: inherit;
  transition: border-color var(--transition), background var(--transition);
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: none; border-color: var(--primary); background: #fff;
}
.contact-form textarea { min-height: 110px; resize: vertical; }
.contact-form button {
  padding: 12px 24px; border: 0; border-radius: 999px;
  background: var(--primary); color: #fff; font-weight: 600; font-size: 14.5px;
  cursor: pointer; transition: background var(--transition);
}
.contact-form button:hover { background: var(--primary-dark); }

/* ============ 城市分站：底部 ============ */
.city-footer {
  padding: 50px 0 30px;
  background: var(--footer-bg, #0d1424);
  color: #cfd6e4;
  position: relative; overflow: hidden;
}
.city-footer::before {
  content: ""; position: absolute; inset: 0;
  background-image: var(--footer-pattern, none);
  opacity: 0.4; pointer-events: none;
}
.city-footer .container { position: relative; z-index: 1; }
.city-footer h3 {
  font-family: var(--font-display); color: #fff; font-size: 22px; margin: 0 0 8px; letter-spacing: 1.5px;
}
.city-footer .city-lede { font-size: 13.5px; color: #8a93a8; margin: 0 0 24px; }
.city-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(108px, 1fr));
  gap: 8px 6px;
  margin-bottom: 28px;
}
.city-grid a {
  display: block; padding: 8px 10px; font-size: 13px;
  color: #cfd6e4; text-align: center;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}
.city-grid a:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  transform: translateY(-1px);
}
.city-grid a.current {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  cursor: default;
}
.city-grid a.current:hover { transform: none; }

.copyright-bar {
  padding-top: 22px; border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
  font-size: 12.5px; color: #8a93a8;
}
.copyright-bar a { color: #8a93a8; }
.copyright-bar a:hover { color: var(--accent); }
.copyright-bar .tech-credit { color: #8a93a8; }
.copyright-bar .tech-credit a { color: #cfd6e4; border-bottom: 1px dashed rgba(255,255,255,0.18); padding-bottom: 1px; }
.copyright-bar .tech-credit a:hover { color: var(--accent); border-color: var(--accent); }
.copyright-bar .sep { margin: 0 8px; opacity: 0.5; }

/* ============ 浮动侧边栏 ============ */
.side-rail { position: fixed; right: 16px; bottom: 80px; z-index: 40; display: flex; flex-direction: column; gap: 10px; }
.side-rail a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 50px; height: 50px; border-radius: 50%;
  background: var(--accent); color: #fff;
  box-shadow: 0 6px 16px -4px rgba(0,0,0,0.25);
  font-size: 12px; font-weight: 600; text-align: center; line-height: 1.1;
  transition: transform 0.2s;
}
.side-rail a:hover { transform: scale(1.06); color: #fff; }
.side-rail a.phone { background: var(--primary); }
.side-rail a.top { background: rgba(0,0,0,0.55); font-size: 18px; }
@media (max-width: 600px) { .side-rail { display: none; } }

/* ============ 装饰元素（不同主题会覆盖） ============ */
.deco-strip {
  height: 4px; background: var(--strip-deco, var(--primary));
  position: relative; overflow: hidden;
}
.deco-strip::after {
  content: ""; position: absolute; left: -50%; top: 0; width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
  animation: deco 4s linear infinite;
}
@keyframes deco { 0% { left: -50%; } 100% { left: 100%; } }