/* ============================================================
   千岁 AI - 官网样式表 v5
   高级深灰底 + 香槟金 | Bento Grid | 实时交互
   ============================================================ */

:root {
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-card: #0a0a0a;
  --bg-elevated: #111111;

  --accent: #c9a96e;
  --accent-light: #dfc08a;
  --accent-dark: #a8884d;
  --accent-glow: rgba(201, 169, 110, 0.12);
  --accent-gradient: linear-gradient(135deg, #c9a96e 0%, #dfc08a 50%, #a8884d 100%);
  --accent-gradient-hover: linear-gradient(135deg, #a8884d 0%, #c9a96e 100%);

  --text-primary: #e8e4df;
  --text-secondary: #a09a90;
  --text-muted: #6b6560;

  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(201, 169, 110, 0.3);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  --container: 1200px;
  --transition: 320ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 600ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 40px; }
body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Display", "Noto Sans SC",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: transparent;
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-text-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
body > main,
body > .bg-glow,
body > .scroll-progress {
  flex-shrink: 0;
}
.site-footer {
  margin-top: auto;
  flex-shrink: 0;
}

/* 鼠标跟随金色光晕 */
.cursor-glow {
  position: fixed; width: 500px; height: 500px; pointer-events: none; z-index: 1;
  background: radial-gradient(circle, rgba(201,169,110,0.07) 0%, rgba(201,169,110,0.02) 40%, transparent 70%);
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease; opacity: 0;
}
.cursor-glow.active { opacity: 1; }

/* 背景光晕 */
.bg-glow {
  position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden;
}
.bg-glow-g3, .bg-glow-g4, .bg-glow-g5 {
  position: absolute; border-radius: 50%;
}
.bg-glow-g3 {
  width: 60vw; height: 60vw; top: -30%; right: -15%;
  background: radial-gradient(circle, rgba(201,169,110,0.04) 0%, transparent 70%);
}
.bg-glow-g4 {
  width: 50vw; height: 50vw; bottom: 5%; left: -10%;
  background: radial-gradient(circle, rgba(168,136,77,0.03) 0%, transparent 70%);
}
.bg-glow-g5 {
  width: 40vw; height: 40vw; top: 40%; left: 35%;
  background: radial-gradient(circle, rgba(223,192,138,0.025) 0%, transparent 70%);
}

/* Canvas 背景 */
#wireCanvas {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
}

/* 噪点纹理叠加 */
.noise-overlay {
  position: fixed; inset: 0; pointer-events: none; z-index: 9998; opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat; background-size: 256px 256px;
}

/* 滚动进度 */
.scroll-progress {
  position: fixed; top: 0; left: 0; width: 0; height: 1.5px; z-index: 9999;
  background: var(--accent-gradient);
  transition: width 50ms linear;
}

/* 滚动动画 */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.15s; }
.reveal-d3 { transition-delay: 0.2s; }
.reveal-d4 { transition-delay: 0.25s; }

/* 导航 */
.navbar {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  transition: height var(--transition), background var(--transition), box-shadow var(--transition);
}
.navbar.shrink {
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.4);
}
.navbar.shrink .nav-brand svg.logo-mark { width: 22px; height: 22px; }
.navbar.shrink .nav-brand img.logo-mark { width: 22px; height: 22px; }
.navbar.shrink .container { height: 54px; }
.navbar .container {
  display: flex; align-items: center; justify-content: space-between; height: 64px;
}
.nav-brand {
  font-size: 1rem; font-weight: 600; color: var(--text-primary);
  display: flex; align-items: center; gap: 10px; letter-spacing: 0.02em; white-space: nowrap;
  text-decoration: none;
}
.nav-brand svg.logo-mark { width: 28px; height: 28px; flex-shrink: 0; }
.nav-brand img.logo-mark { width: 28px; height: 28px; flex-shrink: 0; object-fit: contain; }
.nav-links { display: flex; gap: 0; align-items: center; }
.nav-link {
  font-size: 0.82rem; font-weight: 500; color: var(--text-muted);
  padding: 20px 14px; position: relative; transition: color var(--transition); white-space: nowrap;
  text-decoration: none;
}
.nav-link::after {
  content: ''; position: absolute; bottom: 12px; left: 50%; width: 0; height: 2px;
  background: var(--accent); transition: all var(--transition); transform: translateX(-50%);
}
.nav-link:hover, .nav-link.active { color: var(--text-primary); }
.nav-link.active::after { width: 20px; }
.nav-link:hover::after { width: 14px; }
.nav-cta {
  padding: 8px 20px; font-size: 0.8rem; font-weight: 500;
  color: var(--bg-primary); background: var(--accent-gradient); border: none;
  border-radius: var(--radius-full); cursor: pointer; transition: all var(--transition); white-space: nowrap;
  text-decoration: none;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(201,169,110,0.25); }
.nav-cta.active { box-shadow: 0 0 0 2px var(--bg-primary), 0 0 0 4px var(--accent); }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: var(--text-primary);
  border-radius: 2px; transition: all var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ==================== Hero ==================== */
.hero {
  position: relative; min-height: 75vh;
  padding: 140px 0 80px;
  display: flex; align-items: center; justify-content: center; text-align: center;
  overflow: hidden;
}
.hero-inner {
  position: relative; z-index: 1;
  max-width: 700px;
  margin: 0 auto;
  opacity: 0; animation: fadeUp 0.8s ease 0.2s forwards;
}
.hero-content {
  opacity: 0; animation: fadeUp 0.8s ease 0.2s forwards;
}
@keyframes fadeUp { from{opacity:0;transform:translateY(28px)} to{opacity:1;transform:translateY(0)} }

/* Hero Visual Orb - background */
.hero-visual-orb {
  position: absolute;
  width: 500px; height: 500px;
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(201,169,110,0.06) 0%, rgba(201,169,110,0.02) 50%, transparent 70%);
  border-radius: 50%;
  animation: orbFloat 8s ease-in-out infinite;
  pointer-events: none; z-index: 0;
}
.hero-visual-orb::before {
  content: ''; position: absolute; inset: 15%;
  background: radial-gradient(circle, rgba(223,192,138,0.08) 0%, transparent 60%);
  border-radius: 50%; animation: orbFloat 6s ease-in-out infinite reverse;
}
.hero-visual-orb::after {
  content: ''; position: absolute; inset: 30%;
  background: radial-gradient(circle, rgba(201,169,110,0.04) 0%, transparent 50%);
  border-radius: 50%; animation: orbFloat 10s ease-in-out 2s infinite;
}
@keyframes orbFloat {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -52%) scale(1.05); }
}

/* Hero Stat Cards */
.hero-stat-cards {
  display: flex; gap: 16px; justify-content: center; margin-top: 48px;
}
.hero-stat-card {
  padding: 16px 24px;
  background: rgba(10, 10, 10, 0.5);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  min-width: 120px;
  transition: all var(--transition);
}
.hero-stat-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.hero-stat-num {
  font-size: 1.4rem; font-weight: 700; color: var(--accent);
}
.hero-stat-label {
  font-size: 0.62rem; color: var(--text-muted); letter-spacing: 0.04em;
}

/* Typewriter */
.hero-typewriter {
  font-size: 0.9rem; color: var(--text-muted);
  letter-spacing: 0.06em; font-weight: 400;
  margin-top: 14px;
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap; justify-content: center;
  opacity: 0; animation: fadeUp 0.8s ease 0.6s forwards;
}
.tw-word {
  color: var(--accent); font-weight: 600;
  display: inline-block; position: relative;
  min-width: 100px;
}
.tw-word.switching {
  animation: twFade 0.4s ease;
}
@keyframes twFade {
  0% { opacity: 1; transform: translateY(0); }
  50% { opacity: 0; transform: translateY(-8px); }
  51% { transform: translateY(8px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* 装饰线 */
.hero-line {
  width: 30px; height: 2px; margin: 0 auto 20px;
  background: var(--accent-gradient); opacity: 0.5;
}

.hero h1 {
  margin-bottom: 16px;
}
.hero-line1 {
  font-size: clamp(1.2rem, 2.8vw, 1.8rem);
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  opacity: 0; animation: fadeUp 0.8s ease 0.4s forwards;
}
.hero-line2 {
  display: block;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
  background: var(--accent-gradient);
  background-size: 200% 200%;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  filter: drop-shadow(0 0 30px rgba(201,169,110,0.15));
  opacity: 0; animation: fadeUp 0.8s ease 0.3s forwards, textShimmer 4s ease 1.1s infinite;
}
.hero-tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  margin-top: 12px;
}

/* Hero CTA */
.hero-cta-row {
  display: flex; gap: 14px; justify-content: center; margin-top: 28px;
}
.hero-cta-row .btn { min-width: 140px; text-align: center; }
.hero-cta-row .btn.btn-primary { font-size: 0.85rem; padding: 13px 28px; }
.hero-cta-row .btn.btn-secondary { font-size: 0.85rem; padding: 13px 28px; }

@media (max-width: 768px) {
  .hero-cta-row { flex-direction: column; align-items: center; gap: 10px; }
  .hero-cta-row .btn { width: 80%; max-width: 260px; }
}

/* ==================== 通用 Section ==================== */
.section { padding: 72px 0; position: relative; }
.section + .section::before {
  content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 200px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201,169,110,0.15), transparent);
}
.section-label {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 16px;
}
.section-label::before { content: ""; width: 20px; height: 1px; background: var(--accent); }
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem); font-weight: 700;
  line-height: 1.2; margin-bottom: 14px; letter-spacing: -0.01em; text-align: center;
}
.section-title .hl {
  background: var(--accent-gradient);
  background-size: 200% 200%;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  animation: textShimmer 4s ease infinite;
}
@keyframes textShimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.section-desc { font-size: 1rem; color: var(--text-secondary); max-width: 500px; line-height: 1.7; text-align: center; margin: 0 auto 14px; }
.text-center { text-align: center; }

/* ==================== CTA Band ==================== */
.cta-band {
  background: linear-gradient(135deg, rgba(201,169,110,0.08) 0%, rgba(201,169,110,0.02) 100%);
  border-top: 1px solid rgba(201,169,110,0.1);
  border-bottom: 1px solid rgba(201,169,110,0.1);
}
.cta-band-inner {
  text-align: center; max-width: 600px; margin: 0 auto;
}
.cta-band-title {
  font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700;
  margin-bottom: 12px; color: var(--text-primary);
}
.cta-band-title .hl {
  background: var(--accent-gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.cta-band-desc {
  font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 28px; line-height: 1.7;
}
.btn-cta-band {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 36px; font-size: 0.95rem; font-weight: 600;
  color: var(--bg-primary); background: var(--accent-gradient);
  border-radius: var(--radius-full); border: none; cursor: pointer;
  text-decoration: none; transition: all var(--transition);
}
.btn-cta-band:hover { transform: translateY(-3px); box-shadow: 0 10px 40px rgba(201,169,110,0.3); }
.btn-cta-band svg { width: 18px; height: 18px; }

/* ==================== 按钮 ==================== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; font-size: 0.85rem; font-weight: 500;
  border-radius: var(--radius-full); border: none; cursor: pointer; transition: all var(--transition);
}
.btn-primary { color: var(--bg-primary); background: var(--accent-gradient); text-decoration: none; position: relative; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(201,169,110,0.35), 0 0 60px rgba(201,169,110,0.1); }
.btn-secondary { color: var(--text-primary); background: transparent; border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--text-secondary); transform: translateY(-2px); }
.btn-outline { color: var(--accent); background: transparent; border: 1px solid rgba(201,169,110,0.2); font-size: 0.82rem; padding: 11px 22px; }
.btn-outline:hover { background: rgba(201,169,110,0.06); border-color: var(--accent); }

/* ==================== Services Grid ==================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 1024px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { .services-grid { grid-template-columns: 1fr; } }

/* ==================== 最新动态 ==================== */
.news-preview-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px;
}
@media (max-width: 768px) { .news-preview-grid { grid-template-columns: 1fr; } }
.news-preview-card {
  display: flex; flex-direction: column;
  padding: 24px 20px;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  text-decoration: none;
  position: relative; z-index: 1;
}
.news-preview-card::before {
  content: ''; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, transparent 40%, rgba(201,169,110,0.15) 50%, transparent 60%);
  background-size: 200% 200%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity var(--transition);
}
.news-preview-card:hover::before { opacity: 1; animation: shimmer 3s ease infinite; }
.news-preview-card:hover {
  border-color: var(--border-hover); transform: translateY(-3px); box-shadow: 0 8px 40px rgba(201,169,110,0.06);
}
.news-preview-card h4 {
  font-size: 0.92rem; font-weight: 600; margin: 10px 0 6px;
  color: var(--text-primary); line-height: 1.4;
}
.news-preview-card p {
  font-size: 0.78rem; color: var(--text-secondary); line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-cat {
  display: inline-block; padding: 2px 10px; font-size: 0.62rem; font-weight: 600;
  border-radius: var(--radius-full);
}
.news-cat-daily { color: #60a5fa; background: rgba(96,165,250,0.1); }
.news-cat-article { color: #c9a96e; background: rgba(201,169,110,0.1); }
.news-cat-observe { color: #34d399; background: rgba(52,211,153,0.1); }
.news-time { font-size: 0.66rem; color: var(--text-muted); margin-top: auto; padding-top: 12px; }

/* ==================== 案例预览 ==================== */
.cases-preview-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 32px;
}
@media (max-width: 1024px) { .cases-preview-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { .cases-preview-grid { grid-template-columns: 1fr; } }
.case-preview-card {
  display: flex; flex-direction: column;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  text-decoration: none;
  overflow: hidden;
  position: relative; z-index: 1;
}
.case-preview-card::before {
  content: ''; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, transparent 40%, rgba(201,169,110,0.15) 50%, transparent 60%);
  background-size: 200% 200%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity var(--transition);
}
.case-preview-card:hover::before { opacity: 1; animation: shimmer 3s ease infinite; }
.case-preview-card:hover {
  border-color: var(--border-hover); transform: translateY(-4px); box-shadow: 0 12px 48px rgba(201,169,110,0.08);
}
.case-preview-card:hover .cp-cover img { transform: scale(1.05); }
.cp-cover { aspect-ratio: 16/9; overflow: hidden; position: relative; }
.cp-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.cp-cover::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(0,0,0,0); transition: background var(--transition);
}
.case-preview-card:hover .cp-cover::after { background: rgba(0,0,0,0.3); }
.cp-info { padding: 14px 16px 18px; }
.cp-cat {
  display: inline-block; padding: 2px 8px; font-size: 0.58rem; font-weight: 600;
  color: var(--accent); background: rgba(201,169,110,0.08); border-radius: var(--radius-full);
  margin-bottom: 6px;
}
.cp-info h4 { font-size: 0.86rem; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; line-height: 1.3; }
.cp-info p { font-size: 0.72rem; color: var(--text-secondary); line-height: 1.5; }

/* btn-link */
.btn-link {
  display: inline-block; font-size: 0.85rem; font-weight: 500;
  color: var(--accent); text-decoration: none;
  transition: all var(--transition);
}
.btn-link:hover { color: var(--accent-light); transform: translateX(3px); }

.service-card {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 40px 28px;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-slow);
  z-index: 1;
  text-decoration: none;
  position: relative;
}
.service-card::before {
  content: ''; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, transparent 40%, rgba(201,169,110,0.15) 50%, transparent 60%);
  background-size: 200% 200%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity var(--transition-slow);
}
.service-card:hover::before {
  opacity: 1; animation: shimmer 3s ease infinite;
}
.service-card:hover { border-color: var(--border-hover); transform: translateY(-3px); box-shadow: 0 8px 40px rgba(201,169,110,0.06); }
.sc-icon {
  width: 48px; height: 48px; display: flex; align-items: center; justify-content: center;
  background: rgba(201, 169, 110, 0.08); border-radius: var(--radius-md); margin-bottom: 16px; transition: all var(--transition);
}
.sc-icon svg { width: 24px; height: 24px; stroke: var(--accent); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.service-card:hover .sc-icon { background: rgba(201, 169, 110, 0.14); }
.service-card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 6px; color: var(--text-primary); }
.service-card > p { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.5; }

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ==================== Bento Grid ==================== */
.bento-section { padding-top: 72px; }

/* ==================== Featured Case ==================== */
.featured-case {
  display: block;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
  z-index: 1;
  text-decoration: none;
}
.featured-case:hover { border-color: var(--border-hover); transform: translateY(-3px); }
.featured-case-img {
  aspect-ratio: 16/9; background: var(--bg-secondary);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.featured-case-body { padding: 20px; text-align: center; }
.featured-case-tag {
  display: inline-block; padding: 3px 10px; font-size: 0.62rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--accent); background: rgba(201, 169, 110, 0.06); border-radius: var(--radius-full); margin-bottom: 8px;
}
.featured-case-body h4 { font-size: 0.92rem; font-weight: 600; margin-bottom: 4px; color: var(--text-primary); }
.featured-case-body p { font-size: 0.78rem; color: var(--text-secondary); }

/* ==================== Adv Grid ==================== */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 1024px) { .adv-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { .adv-grid { grid-template-columns: 1fr; } }
.adv-item {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 20px;
  transition: all var(--transition);
  position: relative; z-index: 1;
}
.adv-item::before {
  content: ''; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, transparent 40%, rgba(201,169,110,0.15) 50%, transparent 60%);
  background-size: 200% 200%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity var(--transition);
}
.adv-item:hover::before { opacity: 1; animation: shimmer 3s ease infinite; }
.adv-item:hover { border-color: var(--border-hover); transform: translateY(-3px); }
.adv-icon {
  width: 48px; height: 48px; display: flex; align-items: center; justify-content: center;
  background: rgba(201, 169, 110, 0.08); border-radius: var(--radius-md); margin-bottom: 16px; transition: all var(--transition);
}
.adv-icon svg { width: 24px; height: 24px; stroke: var(--accent); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.adv-item:hover .adv-icon { background: rgba(201, 169, 110, 0.14); }
.adv-item h4 { font-size: 0.92rem; font-weight: 600; margin-bottom: 6px; color: var(--text-primary); }
.adv-item p { font-size: 0.78rem; color: var(--text-secondary); line-height: 1.5; }

/* ==================== Process Grid ==================== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.process-item {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 20px;
  transition: all var(--transition);
  position: relative; z-index: 1;
}
.process-item::before {
  content: ''; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, transparent 40%, rgba(201,169,110,0.15) 50%, transparent 60%);
  background-size: 200% 200%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity var(--transition);
}
.process-item:hover::before { opacity: 1; animation: shimmer 3s ease infinite; }
.process-item:hover { border-color: var(--border-hover); transform: translateY(-3px); }
.process-item .step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; flex-shrink: 0; font-size: 0.85rem; font-weight: 700;
  color: var(--accent); border: 1px solid rgba(201,169,110,0.2); border-radius: 50%;
  margin-bottom: 12px;
}
.process-item h4 { font-size: 0.92rem; font-weight: 600; margin-bottom: 3px; }
.process-item p { font-size: 0.8rem; color: var(--text-secondary); line-height: 1.5; }

/* ==================== 客户评价 ==================== */
.testimonials-marquee {
  margin-top: 48px; overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, black 3%, black 97%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, black 3%, black 97%, transparent);
}
.testimonials-track { display: flex; gap: 16px; animation: marquee 45s linear infinite; width: max-content; }
.testimonials-track:hover { animation-play-state: paused; }
@keyframes marquee { 0%{transform:translateX(0)} 100%{transform:translateX(-50%)} }
.testimonial-card {
  width: 340px; flex-shrink: 0; padding: 26px;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition);
  position: relative; z-index: 1;
}
.testimonial-card::before {
  content: ''; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, transparent 40%, rgba(201,169,110,0.15) 50%, transparent 60%);
  background-size: 200% 200%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity var(--transition);
}
.testimonial-card:hover::before { opacity: 1; animation: shimmer 3s ease infinite; }
.testimonial-card:hover { border-color: var(--border-hover); }
.testimonial-user { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.testimonial-avatar {
  width: 34px; height: 34px; border-radius: 50%; background: var(--accent-gradient);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.72rem; font-weight: 600; color: var(--bg-primary);
}
.testimonial-name { font-size: 0.82rem; font-weight: 500; }
.testimonial-role { font-size: 0.68rem; color: var(--text-muted); }
.testimonial-text { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 10px; }
.testimonial-time { font-size: 0.66rem; color: var(--text-muted); }

/* ==================== Contact Section ==================== */
.contact-btns {
  display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; margin-top: 8px;
}
.contact-btn-wrap { position: relative; }
.contact-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; font-size: 0.85rem; font-weight: 500;
  border-radius: var(--radius-full); cursor: pointer; transition: all var(--transition);
  color: var(--text-primary);
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  position: relative;
}
.contact-btn::before {
  content: ''; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, transparent 40%, rgba(201,169,110,0.2) 50%, transparent 60%);
  background-size: 200% 200%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity var(--transition);
}
.contact-btn:hover::before { opacity: 1; animation: shimmer 2s ease infinite; }
.contact-btn:hover { border-color: var(--accent); background: rgba(201, 169, 110, 0.08); }
.contact-btn svg { width: 18px; height: 18px; }
.contact-qr {
  position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%) scale(0.9);
  width: 220px; height: 220px;
  background: rgba(10, 10, 10, 0.95);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  opacity: 0; visibility: hidden; transition: all var(--transition);
  z-index: 10000;
  pointer-events: none;
}
.contact-btn-wrap:hover .contact-qr { opacity: 1; visibility: visible; transform: translate(-50%, -50%) scale(1); pointer-events: auto; }
.contact-qr img { width: 100%; height: 100%; object-fit: contain; }

/* ==================== 页面 Hero ==================== */
.page-hero { padding: 130px 0 56px; text-align: center; }

/* ==================== 筛选 ==================== */
.cases-filter, .log-filters {
  display: flex; justify-content: center; gap: 8px; margin: 40px 0 0; flex-wrap: wrap;
}
.filter-btn {
  padding: 7px 16px; font-size: 0.78rem; font-weight: 500;
  color: var(--text-muted); background: transparent;
  border: 1px solid var(--border); border-radius: var(--radius-full);
  cursor: pointer; transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active { color: var(--accent); border-color: var(--accent); background: rgba(201, 169, 110, 0.04); }

/* ==================== 案例网格 ==================== */
.cases-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 32px; }
.case-card {
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
  z-index: 1; text-align: center;
}
.case-card:hover { transform: translateY(-3px); border-color: var(--border-hover); }
.case-thumb {
  aspect-ratio: 16/10; background: var(--bg-secondary);
  display: flex; align-items: center; justify-content: center;
}
.case-info { padding: 20px; display: flex; flex-direction: column; align-items: center; }
.case-tag {
  display: inline-block; padding: 3px 10px; font-size: 0.62rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--accent); background: rgba(201, 169, 110, 0.06); border-radius: var(--radius-full); margin-bottom: 8px;
}
.case-info h4 { font-size: 0.92rem; font-weight: 600; margin-bottom: 4px; }
.case-info p { font-size: 0.78rem; color: var(--text-secondary); line-height: 1.5; }

/* ==================== 服务详情 ==================== */
.service-detail { padding-bottom: 56px; }
.sd-card {
  padding: 20px 0; text-align: center;
  margin-bottom: 24px;
  z-index: 1;
}
.sd-header { display: flex; align-items: center; justify-content: center; gap: 20px; margin-bottom: 24px; }
.sd-header .sc-icon { width: 40px; height: 40px; margin: 0; }
.sd-header .sc-icon svg { width: 20px; height: 20px; }
.sd-header h2 { font-size: 1.25rem; font-weight: 600; margin-bottom: 2px; }
.sd-header p { font-size: 0.82rem; color: var(--text-secondary); }
.sd-body { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 0; }
.sd-item {
  padding: 22px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  text-align: center;
  display: flex; flex-direction: column; align-items: center;
  transition: all var(--transition);
}
.sd-item:hover { border-color: var(--border-hover); transform: translateY(-2px); background: rgba(201, 169, 110, 0.06); }
.sd-item h3 { font-size: 0.92rem; font-weight: 600; margin-bottom: 10px; color: var(--text-primary); }
.sd-item ul { padding: 0; list-style: none; }
.sd-item ul li { color: var(--text-secondary); font-size: 0.78rem; margin-bottom: 4px; line-height: 1.5; }
.sd-pricing { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.price-card {
  padding: 26px 18px; text-align: center; background: var(--bg-secondary);
  border: 1px solid var(--border); border-radius: var(--radius-md); transition: all var(--transition); position: relative;
}
.price-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.price-card.featured { border-color: var(--accent); background: rgba(201, 169, 110, 0.03); }
.price-card.featured::after {
  content: "热门"; position: absolute; top: 10px; right: -18px;
  padding: 2px 20px; font-size: 0.6rem; font-weight: 600; color: var(--bg-primary);
  background: var(--accent-gradient); transform: rotate(45deg);
}
.price-card h3 { font-size: 0.88rem; font-weight: 600; margin-bottom: 4px; }
.price-card .price { font-size: 1.2rem; font-weight: 700; color: var(--accent); margin-bottom: 10px; }
.price-card ul li { color: var(--text-secondary); font-size: 0.76rem; margin-bottom: 4px; }

/* ==================== 联系页 ==================== */
.contact-page { padding-bottom: 56px; }
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 700px; margin: 0 auto; }
.contact-card-item {
  padding: 36px 24px; text-align: center;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  z-index: 1;
}
.contact-card-item:hover { border-color: var(--border-hover); transform: translateY(-3px); }
.contact-card-item .contact-card-icon { font-size: 2rem; margin-bottom: 14px; }
.contact-card-item h3 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.contact-card-item > p { font-size: 0.8rem; color: var(--text-secondary); margin-bottom: 18px; }
.btn-contact {
  display: inline-block; padding: 10px 24px; font-size: 0.85rem; font-weight: 500;
  color: var(--accent); background: rgba(201,169,110,0.08); border: 1px solid rgba(201,169,110,0.3);
  border-radius: var(--radius-md); cursor: pointer; text-decoration: none;
  transition: all var(--transition);
}
.btn-contact:hover { background: rgba(201,169,110,0.15); border-color: var(--accent); color: var(--accent); }

/* FAQ */
.faq-section { padding-bottom: 80px; }
.faq-list { max-width: 680px; margin: 40px auto 0; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  padding: 24px 28px;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  z-index: 1;
}
.faq-item:hover { border-color: var(--border-hover); transform: translateY(-1px); }
.faq-q {
  font-size: 0.92rem; font-weight: 600; margin-bottom: 10px; color: var(--text-primary);
  display: flex; align-items: flex-start; gap: 10px;
}
.faq-q::before {
  content: 'Q'; display: inline-flex; align-items: center; justify-content: center;
  min-width: 26px; height: 26px; font-size: 0.75rem; font-weight: 700;
  color: var(--accent); background: rgba(201,169,110,0.1); border-radius: 6px;
}
.faq-a { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.8; padding-left: 36px; }

/* ==================== 日志 ==================== */
.log-section { padding-bottom: 56px; }
.log-grid { display: flex; flex-direction: column; margin-top: 32px; }
.log-card {
  display: flex; gap: 24px; padding: 26px 0;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
  z-index: 1;
}
.log-card:hover { padding-left: 8px; }
.log-date-badge {
  flex-shrink: 0; width: 50px; text-align: center; padding: 8px 0;
  background: var(--bg-secondary); border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.log-date-badge .month { display: block; font-size: 0.6rem; font-weight: 600; color: var(--accent); letter-spacing: 0.06em; text-transform: uppercase; }
.log-date-badge .day { display: block; font-size: 1.25rem; font-weight: 700; line-height: 1.1; color: var(--text-primary); }
.log-date-badge .weekday { display: block; font-size: 0.56rem; color: var(--text-muted); }
.log-body { flex: 1; }
.log-body h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: 4px; color: var(--text-primary); }
.log-body p { font-size: 0.78rem; color: var(--text-secondary); line-height: 1.5; margin-bottom: 6px; }
.log-time { font-size: 0.66rem; color: var(--text-muted); }

/* ==================== 文章弹窗 ==================== */
.article-modal {
  position: fixed; inset: 0; z-index: 2000; display: flex; align-items: flex-start; justify-content: center;
  background: rgba(0,0,0,0.75); backdrop-filter: blur(10px);
  opacity: 0; visibility: hidden; transition: all var(--transition); padding: 60px 20px;
  overflow-y: auto;
}
.article-modal.active { opacity: 1; visibility: visible; }
.article-modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  max-width: 720px; width: 100%;
  transform: translateY(20px); transition: transform var(--transition);
  position: relative; overflow: hidden;
}
.article-modal.active .article-modal-content { transform: translateY(0); }
.article-header {
  padding: 40px 36px 0; text-align: center;
}
.article-cat {
  display: inline-block; padding: 3px 12px; font-size: 0.65rem; font-weight: 600; letter-spacing: 0.06em;
  color: var(--accent); background: rgba(201,169,110,0.08); border-radius: var(--radius-full); margin-bottom: 16px;
}
.article-header h2 { font-size: 1.5rem; font-weight: 700; line-height: 1.3; color: var(--text-primary); margin-bottom: 12px; }
.article-meta { font-size: 0.75rem; color: var(--text-muted); }
.article-cover { padding: 0 36px; margin-top: 24px; }
.article-cover-placeholder {
  aspect-ratio: 16/7; background: linear-gradient(135deg, rgba(201,169,110,0.12), rgba(201,169,110,0.04));
  border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; color: var(--accent); letter-spacing: 0.1em; font-weight: 500;
  border: 1px solid var(--border);
}
.article-body { padding: 28px 36px 40px; }
.article-body p {
  font-size: 0.92rem; color: var(--text-secondary); line-height: 1.9; margin-bottom: 16px;
}
.article-body h3 {
  font-size: 1.1rem; font-weight: 600; color: var(--text-primary); margin: 28px 0 14px; padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.article-body strong { color: var(--accent); font-weight: 600; }
.article-body ul, .article-body ol { padding-left: 20px; margin-bottom: 16px; }
.article-body li { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.8; margin-bottom: 6px; }

/* 日记卡片可点击样式 */
.log-card.clickable:hover { border-bottom-color: var(--accent); }
.log-card.clickable h4 { transition: color var(--transition); }
.log-card.clickable:hover h4 { color: var(--accent); }

/* ==================== 工具弹窗 ==================== */
.tool-modal {
  position: fixed; inset: 0; z-index: 2000; display: flex; align-items: flex-start; justify-content: center;
  background: rgba(0,0,0,0.75); backdrop-filter: blur(10px);
  opacity: 0; visibility: hidden; transition: all var(--transition); padding: 60px 20px;
  overflow-y: auto;
}
.tool-modal.active { opacity: 1; visibility: visible; }
.tool-modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  max-width: 720px; width: 100%;
  transform: translateY(20px); transition: transform var(--transition);
  position: relative; overflow: hidden;
}
.tool-modal.active .tool-modal-content { transform: translateY(0); }
.tool-header {
  padding: 40px 36px 0; text-align: center;
}
.tool-header h2 { font-size: 1.5rem; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.tool-header p { font-size: 0.85rem; color: var(--text-muted); }

.tool-app { padding: 28px 36px 40px; }
.tool-input-area { margin-bottom: 20px; }
.tool-input-area textarea {
  width: 100%; padding: 14px 16px; font-size: 0.9rem; color: var(--text-primary);
  background: rgba(10, 10, 10, 0.35); border: 1px solid var(--border);
  border-radius: var(--radius-md); resize: vertical; font-family: inherit;
  outline: none; transition: border-color var(--transition);
}
.tool-input-area textarea:focus { border-color: var(--accent); }
.tool-input-area textarea::placeholder { color: var(--text-muted); }

.tool-extra-inputs {
  display: flex; gap: 12px; flex-wrap: wrap; margin-top: 12px;
}
.tool-extra-select, .tool-extra-input {
  flex: 1; min-width: 160px; padding: 10px 14px; font-size: 0.85rem; color: var(--text-primary);
  background: rgba(10, 10, 10, 0.35); border: 1px solid var(--border);
  border-radius: var(--radius-md); outline: none; transition: border-color var(--transition);
}
.tool-extra-select:focus, .tool-extra-input:focus { border-color: var(--accent); }
.tool-extra-select { cursor: pointer; }
.tool-extra-select option { background: var(--bg-secondary); color: var(--text-primary); }

.tool-app .btn { display: block; margin: 0 auto 20px; min-width: 120px; }

.tool-output {
  min-height: 120px; max-height: 400px; overflow-y: auto;
  padding: 20px; background: rgba(10, 10, 10, 0.25); border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.tool-output-placeholder, .tool-output-loading, .tool-output-error {
  text-align: center; color: var(--text-muted); font-size: 0.85rem; padding: 30px 0;
}
.tool-output-loading { color: var(--accent); }
.tool-output-error { color: #e8734a; }
.tool-output p {
  font-size: 0.9rem; color: var(--text-secondary); line-height: 1.9; margin-bottom: 14px;
}
.tool-output h3 {
  font-size: 1.05rem; font-weight: 600; color: var(--text-primary); margin: 24px 0 12px; padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.tool-output h2 {
  font-size: 1.2rem; font-weight: 700; color: var(--text-primary); margin: 20px 0 10px;
}
.tool-output h1 {
  font-size: 1.4rem; font-weight: 700; color: var(--accent); margin: 20px 0 12px;
}
.tool-output ul { padding-left: 20px; margin-bottom: 14px; }
.tool-output li { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.8; margin-bottom: 4px; }
.tool-output strong { color: var(--accent); font-weight: 600; }
.tool-output em { color: var(--text-secondary); font-style: italic; }
.tool-output br { display: block; content: ''; margin: 4px 0; }

.tool-card.clickable:hover { border-color: var(--border-hover); transform: translateY(-3px); }

@media (max-width: 768px) {
  .tool-modal { padding: 20px 12px; }
  .tool-modal-content { max-width: 100%; }
  .tool-header { padding: 28px 20px 0; }
  .tool-header h2 { font-size: 1.2rem; }
  .tool-app { padding: 20px; }
  .tool-extra-inputs { flex-direction: column; }
  .tool-extra-select, .tool-extra-input { min-width: 100%; }
}

/* ==================== 创意 ==================== */
.creative-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.creative-card {
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
  z-index: 1; text-align: center;
}
.creative-card:hover { transform: translateY(-4px); border-color: var(--border-hover); }
.creative-thumb {
  aspect-ratio: 4/3; background: var(--bg-secondary);
  display: flex; align-items: center; justify-content: center;
}
.creative-body { padding: 16px; }
.creative-body h4 { font-size: 0.86rem; font-weight: 600; margin-bottom: 2px; color: var(--text-primary); }
.creative-body p { font-size: 0.74rem; color: var(--text-secondary); }

/* ==================== 工具 ==================== */
.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
.tool-card {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 26px 22px;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  z-index: 1;
}
.tool-card:hover { border-color: var(--border-hover); transform: translateY(-3px); }
.tool-icon {
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  background: rgba(201, 169, 110, 0.08); border-radius: var(--radius-md); margin-bottom: 14px; font-size: 1.15rem;
}
.tool-card h3 { font-size: 0.9rem; font-weight: 600; margin-bottom: 4px; color: var(--text-primary); }
.tool-card p { font-size: 0.76rem; color: var(--text-secondary); line-height: 1.5; margin-bottom: 10px; }

/* ==================== 前沿 ==================== */
.frontier-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.frontier-card {
  padding: 26px 22px; text-align: left;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  z-index: 1;
}
.frontier-card:hover { border-color: var(--border-hover); transform: translateY(-3px); }
.frontier-hot-badge {
  display: inline-block; padding: 2px 8px; font-size: 0.58rem; font-weight: 600;
  color: #fff; background: linear-gradient(135deg, #ef4444, #f97316); border-radius: var(--radius-full); margin-bottom: 10px;
}
.frontier-cat-tag {
  display: inline-block; padding: 2px 8px; font-size: 0.58rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--accent); background: rgba(201, 169, 110, 0.06); border-radius: var(--radius-full); margin-bottom: 8px;
}
.frontier-card h4 { font-size: 0.92rem; font-weight: 600; margin-bottom: 6px; line-height: 1.4; color: var(--text-primary); }
.frontier-card p { font-size: 0.78rem; color: var(--text-secondary); line-height: 1.5; margin-bottom: 10px; }
.frontier-meta { display: flex; gap: 16px; font-size: 0.66rem; color: var(--text-muted); }

/* ==================== 留言表单 ==================== */
.inquiry-form {
  padding: 0;
  margin-top: 32px;
}
.form-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
}
.form-row .form-group { margin-bottom: 0; }
.form-group {
  margin-bottom: 16px; text-align: left;
}
.form-group.full-width { grid-column: 1 / -1; }
.form-group label {
  display: block; font-size: 0.78rem; font-weight: 600; color: var(--text-secondary);
  margin-bottom: 6px; white-space: nowrap;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 10px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.82rem;
  font-family: inherit;
  transition: all var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none; border-color: var(--accent); background: rgba(201, 169, 110, 0.04);
}
.form-group textarea { resize: vertical; min-height: 60px; }
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg-secondary); color: var(--text-primary); }

/* ==================== About ==================== */
.about-hero { padding: 130px 0 48px; text-align: center; border-bottom: 1px solid var(--border); }
.about-hero-section { padding-top: 130px; border-bottom: 1px solid var(--border); }
.about-content { padding-bottom: 56px; }
.about-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 48px; }
.about-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 0; }
.about-item {
  padding: 30px;
  background: rgba(10, 10, 10, 0.25);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition);
  z-index: 1;
  text-align: center;
  display: flex; flex-direction: column; align-items: center;
}
.about-item:hover { border-color: var(--border-hover); }
.about-item h3 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; color: var(--text-primary); }
.about-item p { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.7; }

/* About icon circle */
.about-icon-circle {
  width: 48px; height: 48px; display: flex; align-items: center; justify-content: center;
  background: rgba(201, 169, 110, 0.08); border-radius: 50%; margin-bottom: 16px;
}
.about-icon-circle svg { width: 22px; height: 22px; stroke: var(--accent); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }

/* About timeline */
.timeline { max-width: 600px; margin: 40px auto 0; position: relative; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 0; bottom: 0;
  width: 1px; background: var(--border);
}
.timeline-item { position: relative; padding-bottom: 32px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute; left: -24px; top: 4px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--bg-primary);
}
.timeline-body { padding: 0 0 0 16px; }
.timeline-body h4 { font-size: 0.92rem; font-weight: 600; margin-bottom: 4px; }
.timeline-body p { font-size: 0.78rem; color: var(--text-secondary); line-height: 1.6; }
.timeline-date { font-size: 0.68rem; color: var(--accent); font-weight: 600; letter-spacing: 0.04em; }

/* ==================== QR Modal ==================== */
.qr-modal {
  position: fixed; inset: 0; z-index: 2000; display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(8px);
  opacity: 0; visibility: hidden; transition: all var(--transition);
}
.qr-modal.active { opacity: 1; visibility: visible; }
.qr-modal-content {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 30px; text-align: center;
  max-width: 280px; transform: scale(0.9); transition: transform var(--transition);
}
.qr-modal.active .qr-modal-content { transform: scale(1); }
.qr-modal-content img { width: 180px; height: 180px; object-fit: cover; border-radius: var(--radius-md); margin: 0 auto 12px; border: 1px solid var(--border); }
.qr-modal-content p { color: var(--text-secondary); font-size: 0.82rem; }
.qr-close {
  position: absolute; top: 14px; right: 14px; width: 30px; height: 30px;
  display: none; align-items: center; justify-content: center;
  background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 50%;
  cursor: pointer; color: var(--text-primary); transition: all var(--transition); font-size: 0.82rem;
}
.qr-close:hover { border-color: var(--text-muted); }

/* ==================== Case Modal ==================== */
.case-modal {
  position: fixed; inset: 0; z-index: 2000; display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.7); backdrop-filter: blur(8px);
  opacity: 0; visibility: hidden; transition: all var(--transition); padding: 20px;
}
.case-modal.active { opacity: 1; visibility: visible; }
.case-modal-content {
  background: rgba(10, 10, 10, 0.9);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px; text-align: center;
  max-width: 700px; width: 100%;
  transform: scale(0.9); transition: transform var(--transition);
  position: relative;
}
.case-modal.active .case-modal-content { transform: scale(1); }
.case-modal-title { font-size: 1.25rem; font-weight: 600; margin-bottom: 8px; color: var(--text-primary); }
.case-modal-desc { font-size: 0.88rem; color: var(--text-secondary); margin-bottom: 28px; }
.case-deliverables {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
}
.case-deliverable {
  padding: 20px 12px;
  background: rgba(10, 10, 10, 0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex; flex-direction: column; align-items: center; text-align: center;
  transition: all var(--transition);
}
.case-deliverable:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.case-deliverable .del-icon {
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  background: rgba(201, 169, 110, 0.08); border-radius: var(--radius-md); margin-bottom: 10px;
}
.case-deliverable .del-icon svg { width: 20px; height: 20px; stroke: var(--accent); fill: none; stroke-width: 1.5; }
.case-deliverable .del-name { font-size: 0.78rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 4px; }
.case-deliverable .del-count { font-size: 0.92rem; font-weight: 700; color: var(--accent); }

/* Placeholder */
.creative-thumb-placeholder, .case-thumb-placeholder, .featured-case-placeholder {
  padding: 14px; text-align: center; font-size: 0.78rem; color: var(--text-muted);
}

/* ==================== Count-Up ==================== */
.count-up { display: inline-block; }

/* ==================== Footer ==================== */
.site-footer {
  position: relative;
  padding: 16px 0;
  background: rgba(0, 0, 0, 0.8);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  text-align: center;
  z-index: 1;
}
.site-footer p { font-size: 0.72rem; color: var(--text-muted); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .nav-brand { margin-bottom: 14px; }
.footer-desc { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.7; max-width: 320px; }
.footer-nav h4 {
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 14px;
}
.footer-nav a {
  display: block; font-size: 0.82rem; color: var(--text-secondary); padding: 5px 0;
  transition: color var(--transition); text-decoration: none;
}
.footer-nav a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border); padding: 20px 0; text-align: center;
}
.footer-bottom p { font-size: 0.72rem; color: var(--text-muted); }

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .footer-brand { grid-column: 1 / 3; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .form-row { grid-template-columns: 1fr; }
  .case-deliverables { grid-template-columns: repeat(2, 1fr); }
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid, .tools-grid, .creative-grid, .frontier-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .sd-body { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .about-grid-2 { grid-template-columns: 1fr; }
  .testimonial-card { width: 300px; }
}
@media (max-width: 768px) {
  .hero { min-height: auto; padding: 32px 0 24px; }
  .hero h1 { font-size: 2.4rem; }
  .hero-line2 { font-size: 1.8rem; }
  .hero-line1 { font-size: 0.85rem; }
  .hero-stat-cards { flex-wrap: wrap; gap: 10px; }
  .hero-stat-card { min-width: 90px; padding: 12px 16px; }
  .hero-stat-num { font-size: 1.1rem; }
  .section { padding: 48px 0; }
  .bento-section { padding-top: 48px; }
  .services-grid { grid-template-columns: 1fr; }
  .cases-grid, .tools-grid, .creative-grid, .frontier-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .sd-body { grid-template-columns: 1fr; }
  .sd-pricing { grid-template-columns: 1fr; }
  .testimonial-card { width: 280px; padding: 20px; }
  .form-row { grid-template-columns: repeat(2, 1fr); }
  .case-deliverables { grid-template-columns: repeat(2, 1fr); }
  .log-card { flex-direction: column; gap: 12px; }
  .log-date-badge { width: auto; text-align: left; display: flex; gap: 6px; align-items: baseline; padding: 8px 10px; border: 1px solid var(--border); }
  .article-header { padding: 28px 24px 0; }
  .article-header h2 { font-size: 1.25rem; }
  .article-cover { padding: 0 24px; }
  .article-body { padding: 24px 24px 32px; }
  .article-body p, .article-body li { font-size: 0.88rem; }
  .nav-links {
    position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
    flex-direction: column; gap: 0; padding: 72px 24px 24px;
    background: var(--bg-primary); border-left: 1px solid var(--border);
    transition: right var(--transition); align-items: flex-start; overflow-y: auto; z-index: 999;
  }
  .nav-links.open { right: 0; }
  .nav-link { padding: 14px 0; width: 100%; border-bottom: 1px solid var(--border); }
  .nav-link::after { display: none; }
  .nav-cta { margin: 16px 0 0; width: 100%; text-align: center; }
  .nav-toggle { display: flex; }
}