/* ===== CSS Variables ===== */
:root {
  --primary: #0c1e3a;
  --primary-light: #1a3a6b;
  --primary-dark: #061224;
  --accent: #f97316;
  --accent-hover: #ea580c;
  --accent-light: #fff7ed;
  --text: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-dark: #0f172a;
  --border: #e2e8f0;
  --shadow: 0 4px 24px rgba(12, 30, 58, 0.08);
  --shadow-lg: 0 12px 48px rgba(12, 30, 58, 0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --header-height: 72px;
  --topbar-height: 0px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

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

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  padding-top: var(--header-height);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; font-family: inherit; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Top Bar ===== */
.top-bar {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  height: var(--topbar-height);
  display: flex;
  align-items: center;
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.top-bar-links {
  display: flex;
  gap: 20px;
  align-items: center;
}

.top-bar-links a:hover { color: var(--accent); }

.lang-switch {
  display: flex;
  gap: 4px;
  align-items: center;
}

.lang-switch button {
  background: none;
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  padding: 2px 6px;
  border-radius: 4px;
  transition: var(--transition);
}

.lang-switch button.active,
.lang-switch button:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

.lang-switch .divider { color: rgba(255,255,255,0.3); }

/* ===== Header ===== */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

.site-header {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 8px rgba(0,0,0,0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
}

.logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.logo-text { line-height: 1.2; }

.logo-text .brand-cn {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
}

.logo-text .brand-en {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ===== Navigation ===== */
.main-nav { display: flex; align-items: center; gap: 4px; }

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 8px;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-link:hover,
.nav-item:hover > .nav-link {
  color: var(--primary-light);
  background: var(--bg-alt);
}

.nav-link-action {
  color: var(--accent);
  font-weight: 600;
}

.nav-link-action:hover {
  color: var(--accent-hover);
  background: var(--accent-light);
}

.nav-link .arrow {
  width: 12px;
  height: 12px;
  transition: transform var(--transition);
}

.nav-item:hover .arrow { transform: rotate(180deg); }

.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 240px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 100;
}

.nav-item:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown a {
  display: block;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text);
  border-radius: 8px;
  transition: var(--transition);
}

.dropdown a:hover {
  background: var(--accent-light);
  color: var(--accent);
}

.dropdown a.featured {
  font-weight: 600;
  color: var(--primary);
}

.dropdown a.featured::after {
  content: '旗舰';
  display: inline-block;
  margin-left: 6px;
  font-size: 10px;
  background: var(--accent);
  color: #fff;
  padding: 1px 6px;
  border-radius: 4px;
  vertical-align: middle;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  transition: var(--transition);
  white-space: nowrap;
}

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

.btn-outline:hover {
  border-color: var(--primary);
  background: var(--bg-alt);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: 1.5px solid var(--accent);
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.45);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
  border-radius: 10px;
}

.btn-white {
  background: #fff;
  color: var(--primary);
  border: 1.5px solid #fff;
}

.btn-white:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-1px);
}

.btn-ghost {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.4);
  backdrop-filter: blur(4px);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.25);
  border-color: rgba(255,255,255,0.6);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero Banner ===== */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--primary-dark);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(6,18,36,0.88) 0%, rgba(12,30,58,0.78) 50%, rgba(26,58,107,0.72) 100%),
    url('../assets/images/hero-banner.png');
  background-size: cover;
  background-position: center;
}

.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-particles span {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(249,115,22,0.4);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.4; }
  50% { transform: translateY(-20px) scale(1.2); opacity: 0.8; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
  padding: 80px 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(249,115,22,0.15);
  border: 1px solid rgba(249,115,22,0.3);
  color: var(--accent);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-badge-icon {
  display: inline-flex;
  color: var(--accent);
}

.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero h1 .highlight {
  background: linear-gradient(90deg, var(--accent), #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 18px);
  color: rgba(255,255,255,0.75);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 640px;
}

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

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stat .num {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.hero-stat .label {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-top: 6px;
}

/* ===== Section Common ===== */
.section {
  padding: 96px 0;
}

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

.section-dark {
  background: var(--primary-dark);
  color: #fff;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-dark .section-title { color: #fff; }

.section-desc {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.8;
}

.section-dark .section-desc { color: rgba(255,255,255,0.65); }

/* ===== Pain Points ===== */
.pain-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: stretch;
}

.pain-card {
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.pain-card.problems {
  background: #fff;
  border: 1px solid var(--border);
}

.pain-card.solutions {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
}

.pain-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.pain-card.problems h3 { color: #dc2626; }
.pain-card.solutions h3 { color: var(--accent); }

.pain-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  font-size: 15px;
}

.pain-card.solutions .pain-list li {
  border-bottom-color: rgba(255,255,255,0.1);
}

.pain-list li:last-child { border-bottom: none; }

.pain-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  margin-top: 2px;
}

.pain-card.problems .pain-icon { background: #fef2f2; color: #dc2626; }
.pain-card.solutions .pain-icon { background: rgba(249,115,22,0.2); color: var(--accent); }

.pain-card.problems .pain-icon .icon-svg { stroke: #dc2626; }
.pain-card.solutions .pain-icon .icon-svg { stroke: var(--accent); }

.solution-highlight {
  margin-top: 24px;
  padding: 16px 20px;
  background: rgba(249,115,22,0.15);
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  border-left: 3px solid var(--accent);
}

/* ===== Feature Cards ===== */
.feature-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 10px 24px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  background: #fff;
  color: var(--text-muted);
  border: 1.5px solid var(--border);
  transition: var(--transition);
}

.tab-btn.active,
.tab-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.4s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.feature-icon,
.cap-icon,
.guarantee-icon,
.service-icon,
.support-card .icon,
.contact-card .icon,
.promise-item .icon,
.deploy-card .icon,
.solution-card .card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  margin-bottom: 20px;
  background: var(--accent-light);
}

.icon-svg { display: block; flex-shrink: 0; }

.pain-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.pain-icon .icon-svg { width: 14px; height: 14px; }

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-light);
  margin-bottom: 12px;
}

.feature-card h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== AI Meeting ===== */
.ai-timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.ai-timeline::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 16.67%;
  right: 16.67%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light), var(--accent));
  z-index: 0;
}

.ai-phase {
  position: relative;
  z-index: 1;
  text-align: center;
}

.phase-num {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  box-shadow: 0 8px 24px rgba(12,30,58,0.25);
  border: 3px solid #fff;
}

.phase-num span { font-size: 22px; line-height: 1; }

.ai-phase h4 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
}

.ai-features li {
  text-align: left;
  padding: 10px 0;
  font-size: 14px;
  color: var(--text-muted);
  border-bottom: 1px dashed var(--border);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.ai-features li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* ===== Architecture ===== */
.arch-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.arch-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 36px;
  text-align: center;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}

.arch-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(249,115,22,0.4);
  transform: translateY(-4px);
}

.arch-photo {
  width: 100%;
  height: 160px;
  margin: 0 auto 20px;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(0,0,0,0.2);
}

.arch-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.arch-photo-product {
  background: linear-gradient(145deg, #0a0a0a 0%, #1a1a1a 100%);
}

.arch-photo-product img {
  object-fit: contain;
  padding: 16px;
}

.arch-card:hover .arch-photo img { transform: scale(1.05); }

.arch-card h4 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.arch-card p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
}

.deploy-badges {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.deploy-badge {
  padding: 8px 20px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  background: rgba(249,115,22,0.15);
  color: var(--accent);
  border: 1px solid rgba(249,115,22,0.3);
}

/* ===== Room Sizes ===== */
.room-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.room-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.room-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.room-visual {
  height: 220px;
  position: relative;
  overflow: hidden;
  background: var(--bg-alt);
}

.room-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.room-card:hover .room-visual img {
  transform: scale(1.05);
}

.room-size-tag {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 1;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
}

.room-body { padding: 28px; }

.room-body h4 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.room-body .capacity {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
}

.room-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== Services Grid ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.service-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.service-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--border);
  line-height: 1;
  margin-bottom: 16px;
}

.service-card:hover .service-num { color: var(--accent); }

.service-card h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== Capabilities ===== */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.cap-card {
  text-align: center;
  padding: 32px 20px;
}

.cap-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
}

.cap-card h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.cap-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== Cases ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.case-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.case-visual {
  height: 160px;
  position: relative;
  overflow: hidden;
  background: var(--bg-alt);
}

.case-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

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

.case-body { padding: 20px; }

.case-body h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.case-body p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== Guarantee ===== */
.guarantee-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.guarantee-item {
  text-align: center;
  padding: 32px 20px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.guarantee-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 14px;
  background: var(--accent-light);
}

.guarantee-item h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.guarantee-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, #1e4d8c 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 50%, rgba(249,115,22,0.15) 0%, transparent 50%);
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 17px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 32px;
  line-height: 1.8;
}

/* ===== Footer ===== */
#site-footer,
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.85);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .logo-text .brand-cn { color: #fff; }
.footer-brand .logo-text .brand-en { color: rgba(255,255,255,0.4); }

.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.5);
}

.footer-col h5 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}

.site-footer .footer-col a {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: #f8fafc !important;
  padding: 6px 0;
  transition: var(--transition);
}

.site-footer .footer-col a:hover {
  color: var(--accent) !important;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-contact li {
  font-size: 14px;
  padding: 6px 0;
  color: rgba(255,255,255,0.9);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}

.site-footer .footer-bottom a {
  color: #f8fafc !important;
  font-weight: 500;
  transition: var(--transition);
}

.site-footer .footer-bottom a:hover {
  color: var(--accent) !important;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-legal {
  display: flex;
  gap: 20px;
}

/* ===== Floating Elements ===== */
.floating-cta {
  position: fixed;
  bottom: 32px;
  right: 24px;
  z-index: 999;
  display: flex;
}

.floating-cta .btn {
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 100px;
  box-shadow: 0 6px 24px rgba(249, 115, 22, 0.45);
}

/* ===== Page Hero (sub pages) ===== */
.page-hero {
  background: linear-gradient(135deg, rgba(6,18,36,0.9) 0%, rgba(12,30,58,0.85) 100%);
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero-partners {
  background:
    linear-gradient(135deg, rgba(6,18,36,0.88) 0%, rgba(12,30,58,0.82) 100%),
    url('../assets/images/partners-hero.png');
  background-size: cover;
  background-position: center;
}

.page-hero-product {
  background:
    linear-gradient(135deg, rgba(6,18,36,0.88) 0%, rgba(12,30,58,0.82) 100%),
    url('../assets/images/product-fancycast.png');
  background-size: cover;
  background-position: center;
}

.page-hero-solutions {
  background:
    linear-gradient(135deg, rgba(6,18,36,0.88) 0%, rgba(12,30,58,0.82) 100%),
    url('../assets/images/scenario-cast.png');
  background-size: cover;
  background-position: center;
}

.page-hero-support {
  background:
    linear-gradient(135deg, rgba(6,18,36,0.88) 0%, rgba(12,30,58,0.82) 100%),
    url('../assets/images/arch-cloud.png');
  background-size: cover;
  background-position: center;
}

.page-hero-about {
  background:
    linear-gradient(135deg, rgba(6,18,36,0.88) 0%, rgba(12,30,58,0.82) 100%),
    url('../assets/images/about-company.png');
  background-size: cover;
  background-position: center;
}

.page-hero-trial {
  background:
    linear-gradient(135deg, rgba(6,18,36,0.88) 0%, rgba(12,30,58,0.82) 100%),
    url('../assets/images/scenario-ai.png');
  background-size: cover;
  background-position: center;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--bg);
  clip-path: ellipse(55% 100% at 50% 100%);
}

.page-hero h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.page-hero p {
  font-size: 17px;
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  line-height: 1.8;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.breadcrumb a:hover { color: var(--accent); }

/* ===== Product Page ===== */
.product-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.product-visual {
  border-radius: var(--radius-lg);
  background: var(--bg-alt);
  height: 400px;
  position: relative;
  overflow: hidden;
}

.product-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.product-visual-hub {
  background: linear-gradient(145deg, #0a0a0a 0%, #1a1a1a 50%, #0f172a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-visual-hub img {
  object-fit: contain;
  max-width: 85%;
  max-height: 85%;
  width: auto;
  height: auto;
}

.advantage-list {
  display: grid;
  gap: 16px;
}

.advantage-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.advantage-item:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.advantage-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.advantage-item h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.advantage-item p {
  font-size: 14px;
  color: var(--text-muted);
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.spec-block {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.spec-block h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

.spec-block ul li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.spec-block ul li::before {
  content: '•';
  color: var(--accent);
  font-weight: 700;
}

.deploy-options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.deploy-card {
  text-align: center;
  padding: 28px 16px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.deploy-card:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.deploy-card .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: #fff;
  margin: 0 auto 12px;
  color: var(--accent);
}

.deploy-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
}

/* ===== Solutions Page ===== */
.solution-category { margin-bottom: 64px; }

.solution-category h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 28px;
  padding-left: 16px;
  border-left: 4px solid var(--accent);
}

.solution-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.solution-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  overflow: hidden;
  transition: var(--transition);
}

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

.solution-thumb {
  height: 150px;
  overflow: hidden;
  background: var(--bg-alt);
}

.solution-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

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

.solution-body { padding: 24px 28px 28px; }

.solution-card .card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-light);
  margin-bottom: 16px;
}

.solution-card h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.solution-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

.solution-card a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.solution-card a:hover { gap: 8px; }

/* ===== Support Page ===== */
.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.support-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.support-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--accent);
}

.support-card .icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--accent-light);
  margin-bottom: 16px;
}

.support-card h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.support-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.support-card .link-list a {
  display: block;
  padding: 8px 0;
  font-size: 14px;
  color: var(--primary-light);
  border-bottom: 1px dashed var(--border);
  transition: var(--transition);
}

.support-card .link-list a:hover {
  color: var(--accent);
  padding-left: 8px;
}

/* Support card demo layout */
.support-card-demo {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
  cursor: default;
}

.support-card-demo:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(249, 115, 22, 0.25);
}

.support-card-head {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 28px 28px 20px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-alt) 0%, #fff 100%);
}

.support-card-head .icon {
  margin-bottom: 0;
  flex-shrink: 0;
}

.support-card-head h4 {
  margin-bottom: 6px;
}

.support-card-head p {
  margin-bottom: 0;
  font-size: 13px;
}

.support-items {
  padding: 8px 20px;
  flex: 1;
}

.support-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 8px;
  border-bottom: 1px solid var(--bg-alt);
}

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

.support-item-compact {
  align-items: flex-start;
  padding: 14px 8px;
}

.support-item-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.support-item-body {
  flex: 1;
  min-width: 0;
}

.support-item-body strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 2px;
}

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

.support-tag {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 10px;
  border-radius: 100px;
  white-space: nowrap;
}

.support-compat-group {
  padding: 16px 28px 8px;
}

.support-compat-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.support-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.support-chip {
  font-size: 12px;
  font-weight: 500;
  color: var(--primary);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 6px;
}

.support-steps {
  padding: 16px 28px;
  flex: 1;
}

.support-step {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
}

.support-step:last-child {
  border-bottom: none;
}

.support-step-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.support-step-body strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

.support-step-body p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.support-card-foot {
  padding: 14px 28px;
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  line-height: 1.6;
}

.support-card-foot strong {
  color: var(--accent);
  font-weight: 600;
}

.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  background: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover { background: var(--bg-alt); }

.faq-question .toggle {
  font-size: 20px;
  color: var(--accent);
  transition: transform var(--transition);
}

.faq-item.open .faq-question .toggle { transform: rotate(45deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer { max-height: 300px; }

.faq-answer p {
  padding: 0 24px 18px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ===== About Page ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.about-stat {
  text-align: center;
  padding: 24px;
  background: var(--bg-alt);
  border-radius: var(--radius);
}

.about-stat .num {
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
}

.about-stat .label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.contact-card {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.contact-card .icon {
  font-size: 28px;
  flex-shrink: 0;
}

.contact-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.contact-card p {
  font-size: 14px;
  color: var(--text-muted);
}

/* ===== Free Trial Form ===== */
.trial-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.trial-info h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
}

.trial-steps {
  display: grid;
  gap: 16px;
  margin-bottom: 32px;
}

.trial-step {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: var(--bg-alt);
  border-radius: var(--radius);
}

.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.trial-step p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

.trial-step strong { color: var(--text); }

.trial-form-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.form-group label .required { color: #dc2626; }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  font-family: inherit;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  transition: var(--transition);
  background: #fff;
  color: var(--text);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(249,115,22,0.1);
}

.form-group textarea { resize: vertical; min-height: 100px; }

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

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

.captcha-box {
  flex-shrink: 0;
  width: 120px;
  height: 44px;
  background: var(--bg-alt);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 6px;
  color: var(--primary);
  user-select: none;
  cursor: pointer;
  font-family: monospace;
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 24px;
}

.form-check input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--accent);
}

.form-check label {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.form-check a { color: var(--accent); }

.form-check a:hover { text-decoration: underline; }

.btn-submit {
  width: 100%;
  padding: 16px;
  font-size: 16px;
  font-weight: 700;
}

.form-success {
  display: none;
  text-align: center;
  padding: 40px;
}

.form-success .icon { font-size: 64px; margin-bottom: 16px; }

.form-success h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.form-success p {
  font-size: 15px;
  color: var(--text-muted);
}

.trial-promises {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.promise-item {
  text-align: center;
  padding: 24px;
  background: var(--bg-alt);
  border-radius: var(--radius);
}

.promise-item .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: #fff;
  margin: 0 auto 12px;
  color: var(--accent);
}

.contact-card .icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent-light);
  flex-shrink: 0;
}

.promise-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.promise-item p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Mobile Nav ===== */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  top: var(--header-height);
  background: #fff;
  z-index: 999;
  overflow-y: auto;
  padding: 16px 24px 100px;
  transform: translateX(100%);
  transition: transform var(--transition);
}

.mobile-nav.open { transform: translateX(0); }

.mobile-nav-item { border-bottom: 1px solid var(--border); }

.mobile-nav-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  width: 100%;
  background: none;
  text-align: left;
}

.mobile-submenu {
  display: none;
  padding: 0 0 12px 16px;
}

.mobile-submenu.open { display: block; }

.mobile-submenu a {
  display: block;
  padding: 10px 0;
  font-size: 14px;
  color: var(--text-muted);
}

.mobile-submenu a:hover { color: var(--accent); }

.mobile-nav-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

.mobile-hotline {
  text-align: center;
  padding: 16px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  margin-top: 16px;
  font-size: 14px;
  color: var(--text-muted);
}

.mobile-hotline strong { color: var(--primary); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .feature-grid,
  .arch-grid,
  .room-grid,
  .services-grid,
  .cap-grid,
  .cases-grid,
  .guarantee-grid,
  .solution-cards,
  .support-grid,
  .deploy-options { grid-template-columns: repeat(2, 1fr); }

  .footer-grid { grid-template-columns: 1fr 1fr; }

  .ai-timeline { grid-template-columns: 1fr; gap: 40px; }
  .ai-timeline::before { display: none; }

  .product-overview,
  .about-grid,
  .trial-layout,
  .pain-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .main-nav,
  .header-actions .btn-outline { display: none; }

  .hamburger { display: flex; }
  .mobile-nav { display: block; }

  .hero { min-height: auto; }
  .hero-content { padding: 60px 0; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }

  .section { padding: 64px 0; }

  .feature-grid,
  .services-grid,
  .cap-grid,
  .cases-grid,
  .guarantee-grid,
  .spec-grid,
  .contact-grid,
  .trial-promises { grid-template-columns: 1fr; }

  .room-grid,
  .solution-cards,
  .support-grid,
  .deploy-options { grid-template-columns: 1fr; }

  .support-item {
    flex-wrap: wrap;
  }

  .support-tag {
    margin-left: 48px;
  }

  .footer-grid { grid-template-columns: 1fr; }

  .form-row { grid-template-columns: 1fr; }

  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .header-actions .btn-primary { padding: 8px 14px; font-size: 13px; }
}