/* ==========================================================================
   www.91 - 企业官网 | 淡黑金专业互联网服务视觉规范
   Brand: www.91 (91官网 | www91官网)
   Palette: Soft Charcoal (#111317), Obsidian Dark (#171920), Champagne Gold (#d4af37), Warm Ivory (#f8f9fa)
   ========================================================================== */

:root {
  --bg-primary: #0f1013;
  --bg-secondary: #16181d;
  --bg-card: #1c1e24;
  --bg-card-hover: #23262e;
  --bg-light: #252831;
  --border-color: rgba(212, 175, 55, 0.15);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-gold: #d4af37;
  
  --gold-primary: #d4af37;
  --gold-light: #e6c86e;
  --gold-dark: #b38f24;
  --gold-gradient: linear-gradient(135deg, #e6c86e 0%, #d4af37 50%, #997819 100%);
  --gold-glow: rgba(212, 175, 55, 0.2);

  --text-main: #f5f6f8;
  --text-secondary: #c2c6d0;
  --text-muted: #8b919e;
  --text-gold: #e2c262;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --transition-normal: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.45);
  --shadow-gold: 0 8px 30px rgba(212, 175, 55, 0.15);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --container-max: 1240px;
}

/* Reset & Basics */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  background-color: var(--bg-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-normal);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, select, textarea {
  font-family: inherit;
  color: inherit;
}

/* Layout Container */
.site-container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  width: 100%;
}

/* Typography Helpers */
.gold-text {
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 12px;
}

.section-tag::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 2px;
  background: var(--gold-primary);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 52px;
}

.section-header.text-left {
  text-align: left;
  margin-left: 0;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gold-gradient);
  color: #0f1013;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.25);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.35);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background: rgba(212, 175, 55, 0.1);
  border-color: var(--border-color);
  color: var(--gold-light);
  transform: translateY(-2px);
}

.btn-outline-gold {
  background: transparent;
  color: var(--gold-light);
  border-color: var(--gold-primary);
}

.btn-outline-gold:hover {
  background: var(--gold-primary);
  color: #0f1013;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(15, 16, 19, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition-normal);
}

.site-header.scrolled {
  border-bottom-color: var(--border-color);
  background-color: rgba(15, 16, 19, 0.98);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

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

.brand-symbol {
  width: 38px;
  height: 38px;
  background: var(--gold-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0f1013;
  font-weight: 900;
  font-size: 18px;
  letter-spacing: -0.5px;
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.3);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text-main);
  line-height: 1.1;
}

.brand-sub {
  font-size: 11px;
  color: var(--gold-light);
  letter-spacing: 0.5px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--gold-light);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gold-gradient);
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 24px;
  cursor: pointer;
  padding: 4px;
}

/* Mobile Nav Drawer */
.mobile-nav {
  position: fixed;
  top: 72px;
  left: 0;
  width: 100%;
  height: calc(100vh - 72px);
  background: rgba(15, 16, 19, 0.98);
  backdrop-filter: blur(16px);
  padding: 28px 24px;
  display: none;
  flex-direction: column;
  gap: 20px;
  z-index: 99;
  border-bottom: 1px solid var(--border-color);
  overflow-y: auto;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav-link {
  font-size: 16px;
  font-weight: 500;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.mobile-nav-link.active, .mobile-nav-link:hover {
  color: var(--gold-light);
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 90px 0 80px;
  background: radial-gradient(circle at 50% 15%, rgba(212, 175, 55, 0.08) 0%, transparent 65%),
              linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 48px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid var(--border-color);
  border-radius: 30px;
  font-size: 13px;
  color: var(--gold-light);
  margin-bottom: 24px;
}

.hero-title {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 22px;
  letter-spacing: -0.5px;
}

.hero-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.hero-keywords-quote {
  font-size: 13px;
  color: var(--text-muted);
  border-left: 2px solid var(--gold-primary);
  padding-left: 14px;
  margin-bottom: 34px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.hero-image-box {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-gold);
}

.hero-image-box img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.hero-image-box:hover img {
  transform: scale(1.03);
}

.hero-stats-banner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--border-subtle);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--gold-light);
  line-height: 1.1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
}

.stat-demo-note {
  font-size: 11px;
  color: rgba(255,255,255,0.3);
  margin-top: 2px;
}

/* Common Section */
.section-padding {
  padding: 80px 0;
}

.bg-secondary {
  background-color: var(--bg-secondary);
}

.bg-primary {
  background-color: var(--bg-primary);
}

/* Cards & Grids */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-color);
  box-shadow: var(--shadow-gold);
  background: var(--bg-card-hover);
}

/* Core Business Grid */
.core-business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.biz-card {
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  position: relative;
  transition: var(--transition-normal);
}

.biz-card:hover {
  border-color: var(--border-color);
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
}

.biz-icon {
  width: 52px;
  height: 52px;
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-light);
  font-size: 24px;
  margin-bottom: 20px;
}

.biz-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.biz-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
}

.biz-meta {
  font-size: 13px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
  margin-bottom: 16px;
  line-height: 1.6;
}

/* Service / Product Cards */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  border-color: var(--border-color);
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
}

.card-img-wrap {
  width: 100%;
  height: 160px;
  overflow: hidden;
  position: relative;
  background: #191b22;
}

.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .card-img-wrap img {
  transform: scale(1.06);
}

.card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(15, 16, 19, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-color);
  color: var(--gold-light);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
}

.product-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.product-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tag-badge {
  font-size: 11px;
  padding: 2px 7px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  color: var(--text-muted);
}

.product-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  padding-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Solutions Grid */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.solution-card:hover {
  border-color: var(--border-color);
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
}

.solution-img-wrap {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.solution-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.solution-card:hover .solution-img-wrap img {
  transform: scale(1.05);
}

.solution-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.solution-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.solution-target {
  font-size: 12px;
  color: var(--gold-light);
  margin-bottom: 12px;
}

.solution-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
}

.solution-features {
  list-style: none;
  margin-bottom: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.solution-features li {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.solution-features li::before {
  content: "✔";
  color: var(--gold-primary);
  font-size: 11px;
}

/* Cases Grid */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.case-card:hover {
  border-color: var(--border-color);
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
}

.case-img-wrap {
  width: 100%;
  height: 190px;
  overflow: hidden;
  position: relative;
}

.case-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.case-card:hover .case-img-wrap img {
  transform: scale(1.05);
}

.case-body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.case-industry {
  font-size: 12px;
  color: var(--gold-light);
  margin-bottom: 6px;
}

.case-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.case-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 14px;
}

.case-demo-tag {
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.05);
  display: inline-block;
  padding: 2px 6px;
  border-radius: 3px;
  align-self: flex-start;
  margin-bottom: 12px;
}

/* News Grid */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  border-color: var(--border-color);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.news-img-wrap {
  width: 100%;
  height: 160px;
  overflow: hidden;
}

.news-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.news-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.45;
  margin-bottom: 10px;
}

.news-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Service Process Flow */
.process-steps {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  position: relative;
  margin-bottom: 40px;
}

.process-step {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  position: relative;
  transition: var(--transition-normal);
}

.process-step:hover {
  border-color: var(--border-color);
  transform: translateY(-3px);
}

.step-num {
  width: 36px;
  height: 36px;
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  color: var(--gold-light);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}

.step-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Accordion FAQ */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
}

.faq-item.active {
  border-color: var(--border-color);
}

.faq-header {
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.faq-question {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-icon {
  color: var(--gold-light);
  font-size: 18px;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-content {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  display: none;
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
}

.faq-item.active .faq-content {
  display: block;
}

/* Business Collaboration Banner */
.collab-banner {
  background: linear-gradient(135deg, rgba(28, 30, 36, 0.95) 0%, rgba(20, 22, 27, 0.95) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 40px;
}

.collab-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
}

.collab-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.collab-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.collab-badge {
  font-size: 12px;
  padding: 5px 12px;
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--gold-light);
}

/* APP Promo Section */
.app-promo-card {
  background: radial-gradient(circle at 80% 30%, rgba(212, 175, 55, 0.12) 0%, transparent 60%),
              linear-gradient(135deg, #181a20 0%, #121317 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 40px;
}

.app-promo-badge {
  display: inline-block;
  font-size: 12px;
  color: var(--gold-light);
  letter-spacing: 1px;
  font-weight: 600;
  margin-bottom: 12px;
}

.app-promo-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 16px;
}

.app-promo-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
}

.app-download-badges {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.qr-box {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  width: fit-content;
}

.qr-placeholder {
  width: 72px;
  height: 72px;
  background: #ffffff;
  border-radius: 4px;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-placeholder svg {
  width: 100%;
  height: 100%;
}

.qr-info {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Filter Controls Bar */
.filter-bar {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 36px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.filter-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-light);
  min-width: 80px;
}

.filter-options {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-btn {
  font-size: 13px;
  padding: 5px 14px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-normal);
}

.filter-btn:hover {
  border-color: var(--border-color);
  color: var(--text-main);
}

.filter-btn.active {
  background: var(--gold-primary);
  color: #0f1013;
  font-weight: 600;
  border-color: var(--gold-primary);
}

.search-sort-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0 12px;
  width: 320px;
  transition: var(--transition-normal);
}

.search-box:focus-within {
  border-color: var(--gold-primary);
  box-shadow: 0 0 0 1px var(--gold-primary);
}

.search-box input {
  background: transparent;
  border: none;
  padding: 9px 8px;
  font-size: 13px;
  color: var(--text-main);
  width: 100%;
  outline: none;
}

.search-box button {
  background: transparent;
  border: none;
  color: var(--gold-light);
  cursor: pointer;
  padding: 4px;
}

.sort-box {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.sort-select {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  font-size: 13px;
  color: var(--text-main);
  outline: none;
  cursor: pointer;
}

.sort-select:focus {
  border-color: var(--gold-primary);
}

/* Pagination */
.pagination-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}

.page-btn {
  padding: 7px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-normal);
}

.page-btn:hover:not(:disabled) {
  border-color: var(--border-color);
  color: var(--gold-light);
}

.page-btn.active {
  background: var(--gold-primary);
  color: #0f1013;
  font-weight: 600;
  border-color: var(--gold-primary);
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-info {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 12px;
}

/* Modal Popup */
.site-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 11, 14, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.site-modal.open {
  display: flex;
  opacity: 1;
}

.modal-dialog {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 820px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.65);
  display: flex;
  flex-direction: column;
  position: relative;
}

.modal-header {
  padding: 24px 28px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  z-index: 10;
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
}

.modal-close {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-normal);
}

.modal-close:hover {
  background: rgba(212, 175, 55, 0.2);
  color: var(--gold-light);
}

.modal-body {
  padding: 28px;
}

/* Contact Form & Elements */
.contact-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-label .required {
  color: #ff5c5c;
  margin-left: 2px;
}

.form-control {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 14px;
  color: var(--text-main);
  transition: var(--transition-normal);
  outline: none;
}

.form-control:focus {
  border-color: var(--gold-primary);
  box-shadow: 0 0 0 1px var(--gold-primary);
}

.form-control.is-invalid {
  border-color: #ff5c5c;
}

.invalid-feedback {
  font-size: 12px;
  color: #ff7575;
  margin-top: 5px;
  display: none;
}

.form-control.is-invalid + .invalid-feedback {
  display: block;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* Contact Info Cards */
.contact-card-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 20px;
}

.contact-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.contact-card-title::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 16px;
  background: var(--gold-primary);
  border-radius: 2px;
}

.contact-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 13px;
}

.contact-item-row:last-child {
  border-bottom: none;
}

.contact-item-label {
  color: var(--text-muted);
}

.contact-item-val {
  color: var(--text-main);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.copy-badge-btn {
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid var(--border-color);
  color: var(--gold-light);
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 3px;
  cursor: pointer;
  transition: var(--transition-normal);
}

.copy-badge-btn:hover {
  background: var(--gold-primary);
  color: #0f1013;
}

/* Map Box */
.map-container {
  width: 100%;
  height: 320px;
  background: #14161b;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-placeholder-content {
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  max-width: 480px;
}

/* Floating Actions */
.floating-actions {
  position: fixed;
  right: 24px;
  bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 90;
}

.float-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--gold-light);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  position: relative;
}

.float-btn:hover {
  background: var(--gold-primary);
  color: #0f1013;
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

.float-btn-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: #ff4757;
  color: #fff;
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 10px;
  font-weight: 700;
}

/* Online Customer Service Drawer */
.service-drawer {
  position: fixed;
  right: -360px;
  bottom: 90px;
  width: 320px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 20px;
  z-index: 91;
  transition: right 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-drawer.open {
  right: 24px;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.drawer-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.drawer-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 18px;
}

/* Toast Notice */
.toast-notice {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-card);
  border: 1px solid var(--gold-primary);
  box-shadow: var(--shadow-gold);
  color: var(--gold-light);
  padding: 12px 24px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 500;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-notice.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Footer */
.site-footer {
  background-color: #0b0c0e;
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 32px;
  margin-top: auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-col-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--gold-primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--gold-light);
  transform: translateX(4px);
}

.footer-brand-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 18px;
}

.footer-keywords-bar {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-keywords-label {
  font-size: 12px;
  color: var(--gold-light);
  font-weight: 600;
}

.footer-keywords-list {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-keywords-list span {
  font-size: 12px;
  color: var(--text-muted);
}

.footer-keywords-list a {
  font-size: 12px;
  color: var(--text-secondary);
}

.footer-keywords-list a:hover {
  color: var(--gold-light);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-disclaimer {
  color: rgba(255, 255, 255, 0.35);
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumbs a {
  color: var(--text-secondary);
}

.breadcrumbs a:hover {
  color: var(--gold-light);
}

.breadcrumbs span.current {
  color: var(--gold-light);
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .core-business-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-steps {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
  .collab-banner, .app-promo-card {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu, .header-cta {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-stats-banner {
    grid-template-columns: repeat(2, 1fr);
  }
  .core-business-grid, .solutions-grid, .cases-grid, .news-grid {
    grid-template-columns: 1fr;
  }
  .process-steps {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .filter-bar {
    padding: 16px;
  }
  .search-box {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}