/* ========================================
   格子条纹 GRID & STREAK - 2026官网样式
   风格：米白底色 + 建筑蓝图线稿 + 金色点缀 + 深墨色主文字
   ======================================== */

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

:root {
  --color-ink: #1a2322;
  --color-ink-light: #2d3a38;
  --color-ink-muted: #5a6b69;
  --color-gold: #b8976a;
  --color-gold-light: #d4bc95;
  --color-gold-pale: #f5ecd8;
  --color-gold-dark: #9a7a50;
  --color-bg: #f8f5ef;
  --color-bg-warm: #faf7f1;
  --color-bg-card: #ffffff;
  --color-border: #e6dfd2;
  --color-border-light: #efe9dd;
  --color-white: #ffffff;
  --font-cn: 'Noto Sans SC', -apple-system, sans-serif;
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
  --font-en: 'Inter', -apple-system, sans-serif;
  --max-width: 1200px;
  --radius: 4px;
  --radius-lg: 8px;
  --shadow-sm: 0 2px 8px rgba(26,35,34,.04);
  --shadow: 0 8px 32px rgba(26,35,34,.06);
  --shadow-lg: 0 16px 48px rgba(26,35,34,.08);
  --transition: .4s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-cn);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

.section { padding: 110px 0; position: relative; overflow: hidden; }

.section-head { text-align: center; margin-bottom: 64px; position: relative; }

.section-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2.5px;
  color: var(--color-gold);
  text-transform: uppercase;
  font-family: var(--font-en);
  margin-bottom: 18px;
  position: relative;
  padding: 0 28px;
}
.section-tag::before, .section-tag::after {
  content: '✦';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 9px;
  opacity: .6;
}
.section-tag::before { left: 0; }
.section-tag::after { right: 0; }

.section-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.3;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.section-desc {
  font-size: .95rem;
  color: var(--color-ink-muted);
  font-weight: 300;
  letter-spacing: .5px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 38px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1.5px;
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--color-ink);
  color: var(--color-white);
}
.btn-primary:hover {
  background: var(--color-gold-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(154,122,80,.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-ink);
  border: 1.5px solid var(--color-ink);
}
.btn-outline:hover {
  background: var(--color-ink);
  color: var(--color-white);
}

.btn-full { width: 100%; margin-top: 10px; }

/* === Navbar === */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(248,245,239,.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(248,245,239,.96);
  border-bottom-color: var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 124px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo { display: flex; align-items: center; gap: 12px; }

/* Logo image — replaces the old CSS-drawn mark + text stack */
.logo-img {
  display: block;
  height: 108px;
  width: auto;
  object-fit: contain;
}
.footer-brand .logo-img {
  /* vertical layout: mark on top, EN text middle, CN bottom */
  height: 192px;
  width: auto;
}
.footer-brand .logo-img.logo-img-lg { /* alias, same rule above */ }
@media (max-width: 768px) {
  .nav-container { height: 92px; }
  .logo-img { height: 72px; }
  .footer-brand .logo-img { height: 152px; }
}

.nav-menu { display: flex; gap: 34px; align-items: center; }
.nav-menu a {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-ink-light);
  position: relative;
  transition: var(--transition);
  letter-spacing: .5px;
}
.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -6px; left: 50%;
  width: 0; height: 2px;
  background: var(--color-gold);
  transition: width .3s, left .3s;
}
.nav-menu a:hover { color: var(--color-ink); }
.nav-menu a:hover::after { width: 100%; left: 0; }

.nav-cta {
  padding: 9px 26px !important;
  background: var(--color-ink);
  color: var(--color-white) !important;
  border-radius: var(--radius);
  font-weight: 500 !important;
  position: relative;
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--color-gold-dark) !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--color-ink);
  transition: var(--transition);
  border-radius: 2px;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* === Hero === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--color-bg);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-architecture {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(125deg,
      rgba(248,245,239,1) 0%,
      rgba(245,240,232,1) 40%,
      rgba(235,228,215,1) 100%);
}
.hero-architecture::before {
  content: '';
  position: absolute;
  right: 0; top: 0;
  width: 55%;
  height: 100%;
  background:
    linear-gradient(135deg,
      rgba(184,151,106,.08) 0%,
      transparent 40%,
      transparent 100%),
    linear-gradient(160deg,
      rgba(201,185,160,.15) 0%,
      transparent 50%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0% 100%);
}
.hero-photo {
  position: absolute;
  right: 2%; top: 6%;
  width: 48%;
  height: 88%;
  object-fit: cover;
  object-position: center;
  filter: contrast(.92) brightness(.94);
  clip-path: polygon(10% 0, 100% 0, 100% 100%, 0% 100%);
  opacity: .9;
  z-index: 1;
}
.hero-photo-fade {
  position: absolute; inset: 0; pointer-events: none;
}
@media (max-width: 880px) {
  .hero-photo { display: none; }
}

.hero-light {
  position: absolute;
  top: -10%; right: -5%;
  width: 60%;
  height: 120%;
  background: radial-gradient(ellipse at top right,
    rgba(255,248,230,.4) 0%,
    transparent 50%);
  pointer-events: none;
}

.hero-blueprint {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(184,151,106,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184,151,106,.06) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 85%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: left;
  padding: 120px 24px 80px;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
  gap: 48px;
}
.hero-content-main { padding-right: 12px; }
@media (max-width: 880px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content-main { padding-right: 0; }
  .hero-stats { justify-content: center; }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 22px;
  border: 1px solid rgba(184,151,106,.35);
  border-radius: 100px;
  font-size: 12px;
  color: var(--color-gold-dark);
  letter-spacing: 1.5px;
  margin-bottom: 36px;
  background: rgba(184,151,106,.05);
}
.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-gold);
  animation: pulse 2.5s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(184,151,106,.5); }
  50% { opacity: .5; box-shadow: 0 0 0 10px rgba(184,151,106,0); }
}

.hero-title {
  font-family: var(--font-serif);
  line-height: 1.3;
  margin-bottom: 28px;
  letter-spacing: 3px;
}
.title-main {
  display: block;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 900;
  color: var(--color-ink);
}
.title-sub {
  display: block;
  font-size: clamp(2rem, 4.2vw, 3.8rem);
  font-weight: 600;
  color: var(--color-ink-light);
  margin-top: 8px;
  position: relative;
}
.title-dot {
  color: var(--color-gold);
  font-weight: 900;
  font-size: 1.2em;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--color-ink-muted);
  font-weight: 300;
  line-height: 2;
  margin-bottom: 44px;
  letter-spacing: .5px;
}

.hero-actions {
  display: flex;
  gap: 18px;
  justify-content: center;
  margin-bottom: 72px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  padding: 36px 0;
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--color-ink);
  font-family: var(--font-serif);
  line-height: 1;
}
.stat-label {
  display: block;
  font-size: 12px;
  color: var(--color-ink-muted);
  letter-spacing: 1px;
  margin-top: 10px;
}
.stat-divider {
  width: 1px; height: 44px;
  background: var(--color-border);
}

.hero-scroll {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  z-index: 2;
}
.hero-scroll span:last-child {
  font-size: 11px;
  color: var(--color-ink-muted);
  letter-spacing: 2.5px;
}
.scroll-line {
  width: 1px !important;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-gold), transparent);
  animation: scrollLine 2.5s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* === About === */
.about { background: var(--color-bg); }
.about::before {
  content: '';
  position: absolute;
  top: 10%; left: 5%;
  width: 200px; height: 200px;
  background-image:
    linear-gradient(rgba(184,151,106,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184,151,106,.05) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
}

.about-intro {
  max-width: 820px;
  margin: 0 auto 72px;
  text-align: center;
  position: relative;
}
.about-lead {
  font-size: 1.1rem;
  line-height: 2.1;
  color: var(--color-ink-light);
  font-weight: 300;
  letter-spacing: .3px;
}
.about-lead strong {
  color: var(--color-ink);
  font-weight: 700;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.about-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.about-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .5s ease;
}
.about-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-gold-light);
}
.about-card:hover::before { transform: scaleX(1); }

.card-icon-wrap {
  width: 52px; height: 52px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  background: var(--color-gold-pale);
  border-radius: var(--radius);
  color: var(--color-gold-dark);
  transition: var(--transition);
}
.about-card:hover .card-icon-wrap {
  background: var(--color-ink);
  color: var(--color-gold-light);
}
.card-icon { width: 24px; height: 24px; }

.about-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 10px;
  font-family: var(--font-serif);
}
.about-card p {
  font-size: .85rem;
  color: var(--color-ink-muted);
  line-height: 1.8;
}

/* === Services / 产品矩阵 === */
.services {
  background: var(--color-bg-warm);
  position: relative;
}
.services::after {
  content: '';
  position: absolute;
  bottom: 8%; right: 8%;
  width: 300px; height: 300px;
  background-image:
    linear-gradient(rgba(184,151,106,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184,151,106,.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  border: 1px solid rgba(184,151,106,.1);
  transform: rotate(5deg);
}

.service-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.matrix-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 44px 32px;
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.matrix-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--color-gold), transparent);
  opacity: 0;
  transition: var(--transition);
}
.matrix-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-gold-light);
}
.matrix-card:hover::before { opacity: 1; }

.matrix-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-gold);
  font-family: var(--font-serif);
  margin-bottom: 16px;
  opacity: .6;
}
.matrix-icon {
  width: 48px; height: 48px;
  color: var(--color-ink);
  margin-bottom: 24px;
}
.matrix-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
  font-family: var(--font-serif);
}
.matrix-desc {
  font-size: .88rem;
  color: var(--color-gold-dark);
  font-weight: 500;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px dashed var(--color-border);
}
.matrix-list { display: flex; flex-direction: column; gap: 10px; }
.matrix-list li {
  font-size: .88rem;
  color: var(--color-ink-light);
  padding-left: 18px;
  position: relative;
}
.matrix-list li::before {
  content: '◆';
  position: absolute;
  left: 0; top: 1px;
  font-size: 8px;
  color: var(--color-gold);
}

.service-flow {
  text-align: center;
  padding: 40px;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  position: relative;
}
.flow-label {
  display: inline-block;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-ink);
  font-family: var(--font-serif);
  margin-bottom: 28px;
  position: relative;
  padding: 0 48px;
}
.flow-label::before, .flow-label::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 40px; height: 1px;
  background: var(--color-gold);
}
.flow-label::before { left: 0; }
.flow-label::after { right: 0; }

.flow-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}
.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px 24px;
  background: var(--color-bg);
  border-radius: var(--radius);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
}
.flow-step:hover {
  background: var(--color-ink);
  border-color: var(--color-ink);
  transform: translateY(-2px);
}
.flow-step:hover svg { color: var(--color-gold-light); }
.flow-step:hover span { color: var(--color-white); }
.flow-step svg {
  width: 22px; height: 22px;
  color: var(--color-gold-dark);
  transition: var(--transition);
}
.flow-step span {
  font-size: .8rem;
  color: var(--color-ink-light);
  font-weight: 500;
  transition: var(--transition);
}
.flow-arrow {
  color: var(--color-gold);
  font-size: 1rem;
  font-weight: 700;
  opacity: .5;
}

/* === Process === */
.process { background: var(--color-bg); }

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.process-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.process-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--color-gold-light);
}
.process-card::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 60px; height: 60px;
  background: radial-gradient(circle at top right, var(--color-gold-pale), transparent 70%);
  opacity: 0;
  transition: var(--transition);
}
.process-card:hover::after { opacity: 1; }

.process-num {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--color-gold);
  font-family: var(--font-serif);
  line-height: 1;
  opacity: .5;
  transition: var(--transition);
}
.process-card:hover .process-num {
  opacity: 1;
  font-size: 2.5rem;
}
.process-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-ink);
  margin: 14px 0 10px;
  font-family: var(--font-serif);
}
.process-card p {
  font-size: .85rem;
  color: var(--color-ink-muted);
  line-height: 1.8;
  position: relative;
  z-index: 1;
}
.process-highlight {
  background: var(--color-ink);
  border-color: var(--color-ink);
}
.process-highlight .process-num { color: var(--color-gold-light); opacity: .8; }
.process-highlight h4 { color: var(--color-white); }
.process-highlight p { color: rgba(255,255,255,.6); }
.process-highlight:hover {
  background: var(--color-ink-light);
  border-color: var(--color-gold);
}

/* === Works === */
.works { background: var(--color-bg-warm); }

.works-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 260px;
  gap: 16px;
  margin-bottom: 72px;
}
.work-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  position: relative;
}
.work-featured {
  grid-column: span 2;
  grid-row: span 2;
}

.work-img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  position: relative;
  overflow: hidden;
}
.work-img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}
.work-item:hover .work-img img { transform: scale(1.06); }

/* Resting bottom gradient for text readability */
.work-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26,35,34,0) 0%, rgba(26,35,34,.55) 60%, rgba(26,35,34,.92) 100%);
  pointer-events: none;
  z-index: 1;
}

/* 通用播放按钮（视频/链接占位） */
.work-play {
  position: absolute;
  top: 50%; left: 50%;
  width: 64px; height: 64px;
  margin: -32px 0 0 -32px;
  border-radius: 50%;
  background: rgba(184,151,106,.85);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(0,0,0,.35);
  z-index: 3;
  opacity: .35;
  border: 0;
  padding: 0;
}
.work-play::after {
  content: '';
  width: 0; height: 0;
  margin-left: 5px;
  border-left: 16px solid var(--color-white);
  border-top: 11px solid transparent;
  border-bottom: 11px solid transparent;
}
.work-item:hover .work-play {
  opacity: 1;
  transform: scale(1.05);
  background: rgba(184,151,106,1);
}
.work-play:hover {
  background: var(--color-gold-dark) !important;
  transform: scale(1.12) !important;
}
.work-play.disabled {
  background: rgba(255,255,255,.6);
  color: var(--color-gold-dark);
  cursor: not-allowed;
}
.work-play.disabled::after {
  border-left-color: var(--color-gold-dark);
}
.work-play-hint {
  position: absolute;
  top: 14px; left: 14px;
  background: rgba(26,35,34,.6);
  color: var(--color-gold-light);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.5px;
  padding: 4px 10px;
  border-radius: var(--radius);
  z-index: 2;
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}
.work-item:hover .work-play-hint { opacity: 1; }

.work-overlay {
  position: absolute;
  inset: 0;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: linear-gradient(180deg, transparent 0%, transparent 35%, rgba(26,35,34,.5) 65%, rgba(26,35,34,.95) 100%);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
  z-index: 1;
}
.work-item:hover .work-overlay { opacity: 1; }

.work-cat {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--color-gold-light);
  margin-bottom: 8px;
}
.work-overlay h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
  font-family: var(--font-serif);
}
.work-featured .work-overlay h3 { font-size: 1.6rem; }
.work-overlay p {
  font-size: .82rem;
  color: rgba(255,255,255,.65);
  line-height: 1.7;
}
.work-tag {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 12px;
  background: var(--color-gold);
  color: var(--color-ink);
  font-size: 11px;
  font-weight: 700;
  border-radius: var(--radius);
  align-self: flex-start;
}

/* 营销案例 */
.marketing-cases { margin-bottom: 72px; }
.cases-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 28px;
  text-align: center;
  font-family: var(--font-serif);
}
.cases-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 18px;
}
.case-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--color-gold-light);
}
.case-img {
  width: 100%;
  height: 180px;
  position: relative;
  overflow: hidden;
}
.case-img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform .6s ease;
}
.case-card:hover .case-img img { transform: scale(1.06); }
.case-img::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(26,35,34,.4) 100%);
  pointer-events: none;
}
.case-body {
  padding: 22px 24px 26px;
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.case-red {
  background: linear-gradient(135deg, #8b2a2a, #c44e4e);
  color: var(--color-white);
  border-color: #8b2a2a;
}
.case-moon {
  background: linear-gradient(160deg, #1a2330, #2d3a4e 60%, #4a5a75);
  color: var(--color-white);
  border-color: #2d3a4e;
}
.case-moon .case-body { color: var(--color-white); }

.case-badge {
  position: absolute;
  top: 18px; right: 18px;
  padding: 3px 10px;
  background: var(--color-gold);
  color: var(--color-ink);
  font-size: 10px;
  font-weight: 700;
  border-radius: var(--radius);
  letter-spacing: .5px;
  z-index: 2;
}
.case-red .case-badge, .case-moon .case-badge {
  background: var(--color-gold-light);
}
.case-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 10px;
  font-family: var(--font-serif);
}
.case-card p {
  font-size: .84rem;
  color: var(--color-ink-muted);
  line-height: 1.8;
  flex: 1;
}
/* 红色/藏青卡片上的文字反白（放在 .case-card 通用规则之后，避免被覆盖） */
.case-red h4, .case-moon h4 { color: var(--color-white); }
.case-red p, .case-moon p { color: rgba(255,255,255,.82); }
.case-tags {
  display: flex;
  gap: 6px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.case-tags span {
  padding: 3px 10px;
  background: rgba(184,151,106,.15);
  border-radius: var(--radius);
  font-size: 10px;
  color: var(--color-gold-dark);
}
.case-red .case-tags span, .case-moon .case-tags span {
  background: rgba(255,255,255,.15);
  color: rgba(255,255,255,.85);
}

/* 标杆栏目 */
.pillar-shows {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 56px;
  border: 1px solid var(--color-border-light);
  align-items: center;
  position: relative;
  overflow: hidden;
}
.pillar-shows::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(184,151,106,.08) 0%, transparent 70%);
  pointer-events: none;
}
.pillar-cover {
  position: relative;
  width: 100%;
  height: 220px;
  border-radius: var(--radius-lg);
  margin-bottom: 4px;
  overflow: hidden;
  cursor: pointer;
  transition: transform .6s ease;
}
.pillar-cover img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform .6s ease;
}
.pillar-cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26,35,34,0) 50%, rgba(26,35,34,.55) 100%);
  z-index: 1;
  pointer-events: none;
}
.pillar-cover::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 64px; height: 64px;
  margin: -32px 0 0 -32px;
  border-radius: 50%;
  background: rgba(184,151,106,.92);
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
  z-index: 2;
}
.pillar-cover .pillar-play {
  position: absolute;
  top: 50%; left: 50%;
  margin: -10px 0 0 -2px;
  width: 0; height: 0;
  z-index: 3;
  border-left: 20px solid #fff;
  border-top: 13px solid transparent;
  border-bottom: 13px solid transparent;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,.3));
  pointer-events: none;
}
.pillar-cover:hover { transform: scale(1.02); }
.pillar-cover:hover img { transform: scale(1.06); }
.pillar-cover:hover::after { background: var(--color-gold-dark); }
.pillar-cta { margin-top: 28px; }
.pillar-cta.btn-sm {
  padding: 10px 24px;
  font-size: 12px;
}

/* 标杆栏目 */
.pillar-shows {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 56px;
  border: 1px solid var(--color-border-light);
  align-items: center;
  position: relative;
  overflow: hidden;
}
.pillar-shows::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(184,151,106,.06) 0%, transparent 70%);
  border-radius: 50%;
}
.pillar-left { position: relative; z-index: 1; }
.pillar-left h3 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.5;
  font-family: var(--font-serif);
  margin: 16px 0 20px;
}
.pillar-left p {
  font-size: .92rem;
  color: var(--color-ink-muted);
  line-height: 2;
}

.pillar-right {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
  z-index: 1;
}
.pillar-point {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--color-bg);
  border-radius: var(--radius);
  border-left: 3px solid var(--color-gold);
  transition: var(--transition);
}
.pillar-point:hover {
  transform: translateX(6px);
  background: var(--color-gold-pale);
}
.pillar-icon {
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  background: var(--color-gold-pale);
  border-radius: 50%;
  font-size: 16px;
  flex-shrink: 0;
}
.pillar-point h5 {
  font-size: .95rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 2px;
}
.pillar-point p {
  font-size: .8rem;
  color: var(--color-ink-muted);
}

/* === Awards 获奖 === */
.awards {
  background: var(--color-bg);
  position: relative;
}

.awards .section-head {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.awards .section-title {
  position: relative;
  display: block;
  padding: 0 96px;
  margin-top: 4px;
}
.awards .section-title::after {
  content: '';
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  width: 72px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-gold), transparent);
}
.awards .section-title::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  width: 72px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold));
}

.awards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.award-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  text-align: center;
  position: relative;
}
.award-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--color-gold-light);
}
.award-level {
  display: inline-block;
  padding: 3px 12px;
  font-size: 11px;
  font-weight: 700;
  border-radius: 100px;
  letter-spacing: .5px;
  margin-bottom: 16px;
}
.level-top { background: #fce8e8; color: #b93a3a; }
.level-special { background: #fdf0d5; color: #9a7a2a; }
.level-first { background: #e8f0e8; color: #3a7a3a; }
.level-second { background: #e8eef0; color: #2a6a8a; }
.level-model { background: #f0e8f0; color: #7a3a7a; }

.award-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 6px;
  font-family: var(--font-serif);
}
.award-client {
  font-size: .78rem;
  color: var(--color-ink-muted);
  margin-bottom: 10px;
}
.award-result {
  font-size: .85rem;
  color: var(--color-gold-dark);
  font-weight: 600;
  padding-top: 10px;
  border-top: 1px dashed var(--color-border);
}

/* === Clients === */
.clients { background: var(--color-bg-warm); }

.clients-logos {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 72px;
  border: 1px solid var(--color-border-light);
}
.client-logo {
  background: var(--color-bg-card);
  padding: 28px 16px;
  display: grid;
  place-items: center;
  transition: var(--transition);
  text-align: center;
}
.client-logo:hover {
  background: var(--color-gold-pale);
}
.client-logo span {
  font-size: .9rem;
  font-weight: 600;
  color: var(--color-ink);
  transition: var(--transition);
}
.client-logo:hover span { color: var(--color-gold-dark); }

/* 三大媒体渠道 */
.media-three {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 72px;
}
.media-col {
  text-align: center;
  padding: 40px 28px;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.media-col:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.media-col::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
}
.media-depth::before { background: linear-gradient(90deg, #0084ff, #00d4ff); }
.media-flow::before { background: linear-gradient(90deg, #2932e1, #e83323); }
.media-auth::before { background: linear-gradient(90deg, #c41e24, #f5a623); }

.media-brand {
  font-size: 1.8rem;
  font-weight: 900;
  font-family: var(--font-serif);
  margin-bottom: 10px;
}
.media-depth .media-brand { color: #0084ff; }
.media-flow .media-brand { color: #2932e1; }
.media-auth .media-brand { color: #c41e24; }

.media-tag {
  display: inline-block;
  padding: 4px 16px;
  background: var(--color-ink);
  color: var(--color-white);
  font-size: 12px;
  font-weight: 600;
  border-radius: 4px;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.media-col p {
  font-size: .85rem;
  color: var(--color-ink-muted);
  line-height: 1.8;
}

/* 高校合作 */
.edu-partners {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 48px;
  border: 1px solid var(--color-border-light);
  text-align: center;
}
.edu-partners h4 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-ink);
  font-family: var(--font-serif);
  margin-bottom: 32px;
}
.edu-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.edu-stat { display: flex; flex-direction: column; }
.edu-num {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--color-gold);
  font-family: var(--font-serif);
  line-height: 1;
}
.edu-num.text-desc {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 12px;
}
.edu-label {
  font-size: .85rem;
  color: var(--color-ink-muted);
  margin-top: 8px;
}

.edu-marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
}
.marquee-track {
  display: flex;
  gap: 10px;
  width: max-content;
  animation: marquee 50s linear infinite;
}
@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.edu-tag {
  padding: 8px 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: 100px;
  font-size: .85rem;
  font-weight: 500;
  color: var(--color-ink-light);
  white-space: nowrap;
  transition: var(--transition);
}
.edu-tag:hover {
  background: var(--color-ink);
  color: var(--color-white);
  border-color: var(--color-ink);
}

/* === Advantages === */
.advantages { background: var(--color-bg); }

.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.adv-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  text-align: center;
  position: relative;
}
.adv-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: linear-gradient(135deg, var(--color-gold), transparent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: var(--transition);
}
.adv-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.adv-card:hover::before { opacity: 1; }

.adv-icon-wrap {
  width: 56px; height: 56px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  background: var(--color-gold-pale);
  border-radius: 50%;
  color: var(--color-gold-dark);
  transition: var(--transition);
  position: relative;
  z-index: 1;
}
.adv-card:hover .adv-icon-wrap {
  background: var(--color-ink);
  color: var(--color-gold-light);
}
.adv-icon { width: 26px; height: 26px; }
.adv-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 10px;
  font-family: var(--font-serif);
  position: relative;
  z-index: 1;
}
.adv-card p {
  font-size: .84rem;
  color: var(--color-ink-muted);
  line-height: 1.8;
  position: relative;
  z-index: 1;
}

/* === Contact === */
.contact {
  background: var(--color-ink);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}
.contact::before {
  content: '';
  position: absolute;
  bottom: -20%; left: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(184,151,106,.08) 0%, transparent 70%);
  border-radius: 50%;
}
.contact::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  opacity: .3;
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.contact-left .section-tag { margin-bottom: 24px; }

.contact-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.5;
  margin-bottom: 24px;
  letter-spacing: 2px;
}

.contact-desc {
  font-size: 1rem;
  color: rgba(255,255,255,.55);
  line-height: 2;
  font-weight: 300;
  margin-bottom: 36px;
}

.contact-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.contact-feat {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .88rem;
  color: rgba(255,255,255,.7);
}
.contact-feat span:first-child {
  color: var(--color-gold);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-card {
  background: var(--color-white);
  color: var(--color-ink);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
  position: relative;
}
.contact-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.contact-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 24px;
  font-family: var(--font-serif);
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border-light);
}
.contact-item:last-of-type { border-bottom: none; margin-bottom: 20px; }
.contact-item svg {
  width: 22px; height: 22px;
  color: var(--color-gold-dark);
  flex-shrink: 0;
}
.contact-item > div { display: flex; flex-direction: column; gap: 2px; }
.ci-label {
  font-size: .75rem;
  color: var(--color-ink-muted);
  letter-spacing: 1px;
}
.ci-value {
  font-size: .95rem;
  color: var(--color-ink);
  font-weight: 500;
}

/* === Footer === */
.footer {
  background: #111817;
  color: rgba(255,255,255,.4);
  padding: 64px 0 32px;
}
.footer-top {
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
}
.footer-brand .logo-cn { color: var(--color-white); }
.footer-tagline {
  font-size: .88rem;
  color: var(--color-gold);
  margin-bottom: 32px;
  font-family: var(--font-serif);
  letter-spacing: 2px;
}
.footer-nav {
  display: flex;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: .88rem;
  color: rgba(255,255,255,.5);
  transition: var(--transition);
}
.footer-nav a:hover { color: var(--color-gold-light); }

.footer-bottom { text-align: center; }
.footer-bottom p {
  font-size: .75rem;
  color: rgba(255,255,255,.3);
  line-height: 1.8;
}
.footer-creds { margin-top: 8px; }

/* === Responsive === */
@media (max-width: 1024px) {
  .about-grid, .process-grid, .adv-grid, .awards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-matrix, .media-three {
    grid-template-columns: 1fr;
  }
  .clients-logos { grid-template-columns: repeat(4, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .pillar-shows, .contact-wrap {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .works-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 240px; }
  .work-featured { grid-column: span 2; grid-row: span 1; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .section-title { font-size: 1.8rem; }
  .container { padding: 0 18px; }

  .nav-menu {
    position: fixed;
    top: 76px; left: 0; right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: 24px;
    gap: 22px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-150%);
    transition: var(--transition);
    border-top: 1px solid var(--color-border-light);
  }
  .nav-menu.active { transform: translateY(0); }
  .nav-toggle { display: flex; }

  .hero-title .title-main { font-size: 2.2rem; }
  .hero-title .title-sub { font-size: 1.8rem; }
  .hero-subtitle br { display: none; }
  .hero-stats { gap: 14px; padding: 28px 0; }
  .stat-num { font-size: 1.6rem; }
  .stat-divider { height: 30px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; max-width: 280px; }

  .about-grid, .process-grid, .adv-grid, .awards-grid,
  .service-matrix, .clients-logos, .cases-grid,
  .media-three {
    grid-template-columns: 1fr;
  }
  .works-grid { grid-template-columns: 1fr; grid-auto-rows: 220px; }
  .work-featured { grid-column: span 1; grid-row: span 1; }

  .flow-steps { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); }

  .contact-features { grid-template-columns: 1fr; }
  .contact-title { font-size: 1.6rem; }
  .contact-card { padding: 28px; }

  .edu-stats { gap: 24px; }
  .edu-num { font-size: 2rem; }
  .pillar-shows { padding: 36px 24px; }

  .footer-nav { gap: 14px; }
}

/* === 视频灯箱 === */
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.video-modal.open { display: flex; }
.video-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 14, 13, .82);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  animation: fadeIn .3s ease;
}
.video-modal-content {
  position: relative;
  width: 100%;
  max-width: 960px;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 80px rgba(0,0,0,.4);
  padding: 32px;
  animation: videoModalIn .4s cubic-bezier(.4,0,.2,1);
  max-height: 92vh;
  overflow: auto;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes videoModalIn {
  from { opacity: 0; transform: translateY(20px) scale(.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.video-modal-close {
  position: absolute;
  top: 14px; right: 14px;
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  font-size: 22px;
  line-height: 1;
  color: var(--color-ink);
  cursor: pointer;
  transition: var(--transition);
  display: grid;
  place-items: center;
  z-index: 2;
}
.video-modal-close:hover {
  background: var(--color-gold);
  color: var(--color-white);
  border-color: var(--color-gold);
  transform: rotate(90deg);
}
.video-modal-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 20px;
  padding-right: 48px;
  letter-spacing: 1px;
}
.video-modal-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #1a2322 0%, #2d3a38 60%, #6b5a3c 100%);
  border-radius: var(--radius);
  overflow: hidden;
  display: grid;
  place-items: center;
}
.video-modal-frame video,
.video-modal-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}
.video-modal-placeholder {
  text-align: center;
  color: var(--color-white);
  padding: 24px;
}
.video-modal-icon {
  width: 84px; height: 84px;
  border-radius: 50%;
  background: rgba(184,151,106,.92);
  display: grid;
  place-items: center;
  margin: 0 auto 18px;
  font-size: 28px;
  color: #fff;
  box-shadow: 0 12px 36px rgba(0,0,0,.4);
}
.video-modal-placeholder h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  margin-bottom: 10px;
  letter-spacing: 1px;
}
.video-modal-placeholder p {
  font-size: .9rem;
  color: rgba(255,255,255,.7);
  line-height: 1.8;
  margin-bottom: 16px;
}
.video-modal-placeholder code {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(184,151,106,.2);
  color: var(--color-gold-light);
  border-radius: var(--radius);
  font-size: .8rem;
  font-family: var(--font-en);
}
.video-modal-tip {
  margin-top: 18px;
  padding: 14px 18px;
  background: var(--color-bg);
  border-radius: var(--radius);
  border-left: 3px solid var(--color-gold);
  font-size: .9rem;
  color: var(--color-ink-light);
  line-height: 1.9;
}
.video-modal-desc-text {
  margin: 0;
  font-weight: 300;
  letter-spacing: .3px;
}
.video-modal-tip strong { color: var(--color-ink); font-weight: 700; }
.video-modal-tip code {
  background: var(--color-gold-pale);
  color: var(--color-gold-dark);
  padding: 1px 8px;
  border-radius: 3px;
  font-size: .8rem;
  font-family: var(--font-en);
}

@media (max-width: 720px) {
  .video-modal-content { padding: 22px 18px; }
  .video-modal-title { font-size: 1.1rem; }
  .video-modal-placeholder h3 { font-size: 1.05rem; }
  .video-modal-placeholder p { font-size: .82rem; }
}

/* ========================================
   快速联系悬浮组件
   ======================================== */
.quick-contact {
  position: fixed;
  right: 28px;
  bottom: 32px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 14px;
}

.qc-btns {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.qc-btn {
  width: 52px;
  height: 52px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-bg-card);
  color: var(--color-ink);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  box-shadow: var(--shadow);
  transition: all .35s cubic-bezier(.4,0,.2,1);
  position: relative;
}
.qc-btn svg { width: 19px; height: 19px; flex-shrink: 0; }
.qc-btn-label {
  font-size: 9px;
  letter-spacing: .5px;
  color: var(--color-ink-muted);
  line-height: 1;
  transition: color .35s;
}
.qc-btn:hover {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-white);
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(184,151,106,.35);
}
.qc-btn:hover .qc-btn-label { color: rgba(255,255,255,.9); }
.qc-btn.active {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-white);
}
.qc-btn.active .qc-btn-label { color: rgba(255,255,255,.9); }

/* 返回顶部按钮：默认隐藏，滚动后出现 */
.qc-btn-top {
  opacity: 0;
  transform: translateY(12px) scale(.8);
  pointer-events: none;
}
.qc-btn-top.show {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* 弹层（二维码 / 电话号码） */
.qc-panel {
  position: absolute;
  right: 66px;
  bottom: 0;
  width: 216px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 16px 16px 14px;
  text-align: center;
  opacity: 0;
  transform: translateX(14px) scale(.94);
  transform-origin: right bottom;
  pointer-events: none;
  transition: opacity .38s cubic-bezier(.34,1.3,.5,1), transform .38s cubic-bezier(.34,1.3,.5,1);
}
.qc-panel.open {
  opacity: 1;
  transform: translateX(0) scale(1);
  pointer-events: auto;
}
/* 小三角指向按钮 */
.qc-panel::after {
  content: '';
  position: absolute;
  right: -6px;
  bottom: 22px;
  width: 12px;
  height: 12px;
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border-light);
  border-right: 1px solid var(--color-border-light);
  transform: rotate(45deg);
}

.qc-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.qc-panel-head span {
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-ink);
  font-family: var(--font-serif);
}
.qc-panel-close {
  width: 22px;
  height: 22px;
  border: none;
  background: transparent;
  color: var(--color-ink-muted);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  border-radius: 50%;
  transition: var(--transition);
  display: grid;
  place-items: center;
}
.qc-panel-close:hover { background: var(--color-gold-pale); color: var(--color-gold-dark); }

.qc-qr-box {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  padding: 8px;
  background: var(--color-white);
}
.qc-qr-box img { width: 100%; height: auto; }

.qc-panel-tip {
  margin-top: 10px;
  font-size: .75rem;
  color: var(--color-ink-muted);
  letter-spacing: .5px;
}

.qc-panel-phone { width: 216px; }
.qc-phone-num {
  display: block;
  font-family: var(--font-en);
  font-size: 1.28rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-gold-dark);
  padding: 10px 0 2px;
  transition: color .3s;
}
.qc-phone-num:hover { color: var(--color-gold); }

/* 移动端适配 */
@media (max-width: 768px) {
  .quick-contact { right: 16px; bottom: 20px; gap: 12px; }
  .qc-btn { width: 46px; height: 46px; }
  .qc-btn svg { width: 17px; height: 17px; }
  .qc-panel { right: 58px; width: 196px; }
}