/* ===========================================================
   格地 BIM · 二级页全屏展示样式（业绩 / 业务）
   =========================================================== */
:root {
  --c-blue-50:  #e6f7ff;
  --c-blue-100: #b8e2ff;
  --c-blue-300: #5fb6ff;
  --c-blue-500: #2196f3;
  --c-blue-700: #0a6dc7;
  --c-blue-900: #0a2540;
  --c-blue-950: #061a30;
  --c-gold-300: #f4d27a;
  --c-gold-400: #ecc25e;
  --c-gold-500: #d4af37;
  --c-gold-600: #b08d2a;
  --c-white: #ffffff;
  --grad-gold: linear-gradient(135deg, #d4af37 0%, #f4d27a 50%, #d4af37 100%);
  --f-sans: 'Inter', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --f-tech: 'Orbitron', 'Inter', sans-serif;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--f-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-white);
  background:
    radial-gradient(ellipse at 15% 10%, rgba(0, 212, 255, .12) 0%, transparent 40%),
    radial-gradient(ellipse at 85% 90%, rgba(212, 175, 55, .1) 0%, transparent 40%),
    linear-gradient(160deg, #061a30 0%, #0a2540 45%, #0e5fa3 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; border: 0; background: none; padding: 0; cursor: pointer; color: inherit; }
h1, h2, h3, h4 { margin: 0; font-weight: 800; letter-spacing: -0.01em; }
p { margin: 0; }

/* ----------  顶部条  ---------- */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4, 16px);
  padding: 14px clamp(16px, 4vw, 48px);
  background: rgba(6, 26, 48, .55);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid rgba(212, 175, 55, .15);
}
.topbar-brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 15px; font-weight: 700;
  color: var(--c-white);
}
.topbar-brand .tname { font-family: var(--f-tech); color: var(--c-gold-400); font-size: 12px; letter-spacing: 2px; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.topbar .btn-back {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px;
  font-size: 13px;
  color: var(--c-white);
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 999px;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}
.topbar .btn-back:hover { border-color: var(--c-gold-500); background: rgba(212, 175, 55, .12); }
.topbar .btn-fs {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-blue-950);
  background: var(--grad-gold);
  border-radius: 999px;
  box-shadow: 0 6px 20px -6px rgba(212, 175, 55, .5);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.topbar .btn-fs:hover { transform: translateY(-2px); box-shadow: 0 10px 26px -6px rgba(212, 175, 55, .7); }
.topbar .btn-fs svg { width: 15px; height: 15px; }

/* ----------  页面主区  ---------- */
.page {
  padding: 96px clamp(16px, 4vw, 48px) 64px;
  max-width: 1400px;
  margin: 0 auto;
}
.page-head { text-align: center; margin-bottom: 48px; }
.page-eyebrow {
  font-family: var(--f-tech);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--c-gold-400);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.page-title {
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.15;
  background: linear-gradient(180deg, #ffffff 0%, #b8e2ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-title .accent {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-sub {
  max-width: 720px;
  margin: 16px auto 0;
  font-size: 15px;
  color: rgba(255, 255, 255, .62);
}

/* ----------  业绩卡片网格  ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}
.proj-card {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .08);
  background: rgba(255, 255, 255, .03);
  cursor: pointer;
  transition: transform .35s var(--ease), border-color .35s var(--ease), box-shadow .35s var(--ease);
  text-align: left;
  display: block;
}
.proj-card:hover {
  transform: translateY(-6px);
  border-color: var(--c-gold-500);
  box-shadow: 0 24px 60px -20px rgba(0, 212, 255, .4);
}
.proj-media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
.proj-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s var(--ease);
}
.proj-card:hover .proj-media img { transform: scale(1.07); }
.proj-media::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(6, 26, 48, .92) 100%);
}
.proj-body { padding: 18px 20px 20px; }
.proj-cat {
  display: inline-block;
  font-family: var(--f-tech);
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--c-gold-400);
  padding: 3px 10px;
  background: rgba(212, 175, 55, .1);
  border: 1px solid rgba(212, 175, 55, .28);
  border-radius: 4px;
  margin-bottom: 10px;
}
.proj-body h3 { font-size: 19px; color: var(--c-white); margin-bottom: 6px; line-height: 1.35; }
.proj-body p { font-size: 13px; color: rgba(255, 255, 255, .62); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ----------  业务卡片（services 页）  ---------- */
.svc-card {
  position: relative;
  padding: 36px 28px;
  border-radius: 18px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(0, 212, 255, .14);
  overflow: hidden;
  cursor: pointer;
  transition: transform .35s var(--ease), border-color .35s var(--ease), background .35s var(--ease);
}
.svc-card:hover {
  transform: translateY(-6px);
  border-color: var(--c-gold-500);
  background: rgba(255, 255, 255, .07);
}
.svc-num {
  font-family: var(--f-tech);
  font-size: 46px;
  font-weight: 900;
  color: rgba(0, 212, 255, .25);
  line-height: 1;
  margin-bottom: 14px;
}
.svc-tag {
  display: inline-block;
  font-family: var(--f-tech);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--c-gold-400);
  padding: 3px 10px;
  border: 1px solid rgba(212, 175, 55, .3);
  border-radius: 4px;
  margin-bottom: 12px;
}
.svc-card h3 { font-size: 22px; color: var(--c-white); margin-bottom: 10px; }
.svc-card .svc-brief { font-size: 13px; color: rgba(255, 255, 255, .6); line-height: 1.8; }
.svc-card .svc-open {
  display: inline-block;
  margin-top: 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-gold-400);
}

/* 全屏展示中卡片更大 */
body:fullscreen .card-grid { grid-template-columns: repeat(auto-fill, minmax(460px, 1fr)); }
body:fullscreen .proj-body h3 { font-size: 24px; }
body:fullscreen .proj-body p { font-size: 15px; -webkit-line-clamp: 3; }
body:fullscreen .svc-card { padding: 48px 36px; }
body:fullscreen .svc-card h3 { font-size: 28px; }

/* ----------  Lightbox 大图  ---------- */
.lightbox {
  position: fixed; inset: 0;
  z-index: 100;
  background: rgba(3, 12, 24, .94);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s var(--ease);
}
.lightbox.open { opacity: 1; pointer-events: auto; }
.lb-inner {
  width: min(1100px, 92vw);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  background: rgba(10, 37, 64, .6);
  border: 1px solid rgba(212, 175, 55, .3);
  border-radius: 20px;
  overflow: hidden;
  transform: scale(.96) translateY(10px);
  transition: transform .35s var(--ease);
}
.lightbox.open .lb-inner { transform: scale(1) translateY(0); }
.lb-media { position: relative; flex: 1; min-height: 0; }
.lb-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #04101f;
}
.lb-body { padding: 22px 28px 26px; }
.lb-cat {
  font-family: var(--f-tech);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--c-gold-400);
  margin-bottom: 8px;
}
.lb-body h3 { font-size: 26px; color: var(--c-white); margin-bottom: 10px; }
.lb-body p { font-size: 14px; color: rgba(255, 255, 255, .7); line-height: 1.85; }
.lb-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  color: var(--c-white);
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .25);
  border-radius: 50%;
  transition: background .25s var(--ease), transform .25s var(--ease);
  z-index: 5;
}
.lb-close:hover { background: rgba(212, 175, 55, .25); transform: rotate(90deg); }
.lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  color: var(--c-white);
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 50%;
  transition: background .25s var(--ease);
  z-index: 5;
}
.lb-nav:hover { background: rgba(212, 175, 55, .3); }
.lb-prev { left: 16px; }
.lb-next { right: 16px; }
.lb-hint {
  position: absolute;
  bottom: 10px; left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  color: rgba(255, 255, 255, .5);
  letter-spacing: 1px;
  z-index: 5;
}

/* ----------  页脚  ---------- */
.footer {
  text-align: center;
  padding: 28px 16px 40px;
  font-size: 13px;
  color: rgba(255, 255, 255, .45);
  border-top: 1px solid rgba(255, 255, 255, .08);
}
.footer a { color: var(--c-gold-400); }

/* ----------  响应式  ---------- */
@media (max-width: 640px) {
  .page { padding-top: 84px; }
  .card-grid { grid-template-columns: 1fr; }
  .topbar .btn-back span { display: none; }
  .lb-nav { width: 40px; height: 40px; font-size: 18px; }
}