/* ============================================
   哈希汇能科技官网 - 主样式
   设计理念：科技感 + 专业商务 + 留白呼吸感
   ============================================ */

/* ── Reset & Base ─────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #1a1a2e;
  background: #fafbfc;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ── Color Tokens ─────────────────────────── */
:root {
  --navy: #0a1628;
  --navy-light: #132038;
  --blue: #1E6FFF;
  --blue-dark: #0b5ed7;
  --teal: #00C9B1;
  --teal-light: #00e6cc;
  --bg: #fafbfc;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --text: #1a1a2e;
  --text-secondary: #5a6070;
  --text-muted: #8892a4;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(10,22,40,.06);
  --shadow-md: 0 4px 20px rgba(10,22,40,.08);
  --shadow-lg: 0 12px 40px rgba(10,22,40,.12);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

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

/* ── Section ──────────────────────────────── */
.section {
  padding: 100px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--teal);
  background: rgba(0,201,177,.08);
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.25;
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ── Reveal Animation ────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity .7s var(--transition), transform .7s var(--transition);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226,232,240,.6);
  transition: background var(--transition), box-shadow var(--transition);
}
.nav.scrolled {
  background: rgba(255,255,255,.95);
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
  color: var(--navy);
}
.nav-logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
}
.logo-text {
  font-weight: 700;
  font-size: 18px;
  color: var(--navy);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue);
  transition: width var(--transition);
}
.nav-links a:hover { color: var(--blue); }
.nav-links a:hover::after { width: 100%; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--navy);
  transition: var(--transition);
  display: block;
}

/* ═══════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--navy);
  padding: 80px 24px 60px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(30,111,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,111,255,.06) 1px, transparent 1px);
  background-size: 60px 60px;
}
.grid-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, transparent 40%, rgba(10,22,40,.6) 100%);
}
.scan-line {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0,201,177,.3), transparent);
  animation: scanDown 4s linear infinite;
}
@keyframes scanDown {
  0% { top: 0; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}
.circuit-line {
  position: absolute;
  background: rgba(0,201,177,.15);
  animation: circuitPulse 3s ease-in-out infinite;
}
.circuit-line.h {
  width: 80px; height: 1px;
  top: 50%;
}
.circuit-line.v {
  width: 1px; height: 60px;
  left: 50%;
}
@keyframes circuitPulse {
  0%, 100% { opacity: .3; }
  50% { opacity: .8; }
}
.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .5;
  animation: float 8s ease-in-out infinite;
}
.orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--blue), transparent 70%);
  top: -100px; right: -100px;
}
.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--teal), transparent 70%);
  bottom: -50px; left: -50px;
  animation-delay: -3s;
}
.orb-3 {
  width: 250px; height: 250px;
  background: radial-gradient(circle, #8B5CF6, transparent 70%);
  top: 40%; left: 60%;
  animation-delay: -5s;
  opacity: .3;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -30px) scale(1.05); }
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,201,177,.12);
  border: 1px solid rgba(0,201,177,.25);
  color: var(--teal-light);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 20px;
  border-radius: 30px;
  margin-bottom: 32px;
}
.badge-dot {
  width: 6px; height: 6px;
  background: var(--teal);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(1.4); }
}
.hero-title {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  letter-spacing: -.02em;
  margin-bottom: 24px;
}
.hero-title .line-2 {
  display: block;
  background: linear-gradient(135deg, var(--teal-light), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-title .highlight {
  /* gradient handled above */
}
.hero-desc {
  font-size: clamp(16px, 2vw, 19px);
  color: rgba(255,255,255,.65);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 4px 20px rgba(30,111,255,.3);
}
.btn-primary:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(30,111,255,.35);
}
.btn-ghost {
  background: rgba(255,255,255,.08);
  color: #fff;
  border: 1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover {
  background: rgba(255,255,255,.14);
  transform: translateY(-2px);
}
.btn-full { width: 100%; justify-content: center; }
.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  justify-content: center;
  flex-wrap: wrap;
}
.stat-item {
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.stat-num {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
}
.stat-unit {
  font-size: 18px;
  color: rgba(255,255,255,.5);
  font-weight: 500;
}
.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,.45);
  margin-left: 4px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,.12);
}
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.35);
  font-size: 12px;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,.3), transparent);
  animation: scrollDown 2s ease-in-out infinite;
}
@keyframes scrollDown {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ═══════════════════════════════════════════
   ABOUT
   ═══════════════════════════════════════════ */
.about { background: var(--bg); }
.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
}
.about-card:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.about-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 10px;
}
.about-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}
.about-detail {
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  border-radius: var(--radius-lg);
  padding: 40px;
  color: #fff;
}
.about-detail h3 {
  font-size: 20px;
  margin-bottom: 16px;
}
.about-detail p {
  color: rgba(255,255,255,.7);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 16px;
}

/* ═══════════════════════════════════════════
   TECHNOLOGY
   ═══════════════════════════════════════════ */
.tech { background: var(--surface); }
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.tech-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.tech-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
  transition: all var(--transition);
}
.tech-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.tech-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 4px 16px rgba(30,111,255,.2);
}
.tech-num {
  position: absolute;
  top: 20px; right: 24px;
  font-size: 44px;
  font-weight: 900;
  color: rgba(10,22,40,.04);
  line-height: 1;
}
.tech-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 10px;
}
.tech-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
}
.tech-card ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.tech-card li {
  font-size: 12px;
  color: var(--text-secondary);
  padding-left: 14px;
  position: relative;
}
.tech-card li::before {
  content: '';
  position: absolute;
  left: 0; top: 6px;
  width: 5px; height: 5px;
  background: var(--teal);
  border-radius: 50%;
}
.tech-innovation {
  background: linear-gradient(135deg, var(--navy), #0d1f3c);
  border-radius: var(--radius-lg);
  padding: 40px;
  color: #fff;
}
.innovation-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--teal-light);
  background: rgba(0,201,177,.12);
  border: 1px solid rgba(0,201,177,.25);
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 24px;
}
.innovation-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.inn-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.inn-item strong {
  font-size: 15px;
  color: #fff;
}
.inn-item span {
  font-size: 13px;
  color: rgba(255,255,255,.55);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════
   PRODUCTS
   ═══════════════════════════════════════════ */
.products { background: var(--bg); }
.product-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.tab-btn {
  padding: 10px 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.tab-btn:hover { border-color: var(--blue); color: var(--blue); }
.tab-btn.active {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.product-layout {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: 48px;
  align-items: center;
}
.product-info h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 12px;
}
.product-desc {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}
.feature-list .check {
  color: var(--teal);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.pricing-hint {
  background: rgba(30,111,255,.06);
  border: 1px solid rgba(30,111,255,.12);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.pricing-hint strong { color: var(--blue); }
/* Product Visual（测试图容器样式见文末"视觉精修增强"） */
.product-visual { display: flex; justify-content: center; }
.visual-frame { width: 100%; }

/* ═══════════════════════════════════════════
   TEAM
   ═══════════════════════════════════════════ */
.team { background: var(--surface); }
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.team-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}
.team-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.team-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #fff);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid rgba(255,255,255,.8);
  box-shadow: 0 4px 16px rgba(0,0,0,.1);
}
.avatar-letter {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
}
.team-role-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--teal);
  background: rgba(0,201,177,.08);
  padding: 4px 12px;
  border-radius: 12px;
  margin-bottom: 10px;
}
.team-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 12px;
}
.team-bio {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
}
.team-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}
.team-tags span {
  font-size: 11px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 3px 10px;
  border-radius: 12px;
}
.team-summary {
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  border-radius: var(--radius-lg);
  padding: 32px 40px;
  color: #fff;
  font-size: 15px;
  line-height: 1.8;
  text-align: center;
}
.team-summary strong { color: var(--teal-light); }

/* ═══════════════════════════════════════════
   PARTNERS
   ═══════════════════════════════════════════ */
.partners { background: var(--bg); }
.partner-showcase {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.partner-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: all var(--transition);
}
.partner-card.main { grid-column: span 1; }
.partner-card.sub { grid-column: span 1; }
.partner-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.partner-logo-wrap {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--blue) 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(30,111,255,.2);
  position: relative;
  overflow: hidden;
}
.partner-logo-wrap::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle, rgba(0,201,177,.15) 0%, transparent 60%);
  animation: partnerShine 4s ease-in-out infinite;
}
@keyframes partnerShine {
  0%, 100% { transform: translate(-30%, -30%); }
  50% { transform: translate(30%, 30%); }
}
.partner-initials {
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .05em;
  position: relative;
  z-index: 1;
  font-family: 'Inter', sans-serif;
}
.partner-info h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 4px;
}
.partner-type {
  font-size: 11px;
  font-weight: 600;
  color: var(--teal);
  background: rgba(0,201,177,.08);
  padding: 3px 10px;
  border-radius: 10px;
  display: inline-block;
  margin-bottom: 10px;
}
.partner-info p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}
.partner-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.partner-tags span {
  font-size: 11px;
  background: var(--surface-2);
  color: var(--text-muted);
  padding: 3px 10px;
  border-radius: 10px;
}

.finance-highlight {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.finance-card {
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  color: #fff;
}
.finance-num {
  display: block;
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--teal-light), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}
.finance-label {
  font-size: 12px;
  color: rgba(255,255,255,.55);
}

/* ═══════════════════════════════════════════
   GROWTH TIMELINE
   ═══════════════════════════════════════════ */
.timeline-horizontal {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.t-phase {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}
.t-phase:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow-md);
}
.t-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 4px;
}
.t-period {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.t-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.t-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 0;
}
.t-item strong {
  font-size: 14px;
  color: var(--navy);
  margin-bottom: 4px;
}
.t-item p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}
/* ═══════════════════════════════════════════
   BLOG
   ═══════════════════════════════════════════ */
.blog { background: var(--bg); }
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}
.blog-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: transparent;
}
.blog-card-body {
  padding: 24px;
}
.blog-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--blue);
  background: rgba(30,111,255,.08);
  padding: 3px 10px;
  border-radius: 8px;
  margin-bottom: 12px;
}
.blog-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.4;
  margin-bottom: 10px;
}
.blog-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
}
.blog-meta {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  gap: 12px;
}
.blog-more { text-align: center; }

/* ═══════════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════════ */
.contact { background: var(--surface); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-icon {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.contact-item strong {
  display: block;
  font-size: 14px;
  color: var(--navy);
  margin-bottom: 4px;
}
.contact-item p {
  font-size: 14px;
  color: var(--text-secondary);
}
.contact-form-wrap {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: span 2; }
.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--navy);
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  background: var(--surface);
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(30,111,255,.1);
}
.form-success {
  text-align: center;
  padding: 40px 20px;
}
.success-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: #fff;
  margin: 0 auto 16px;
}
.form-success h3 {
  font-size: 20px;
  color: var(--navy);
  margin-bottom: 8px;
}
.form-success p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════ */
.footer {
  background: var(--navy);
  color: rgba(255,255,255,.6);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.footer-logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
}
.footer-desc {
  font-size: 13px;
  line-height: 1.7;
  margin-bottom: 20px;
  color: rgba(255,255,255,.5);
}
.footer-legal {
  font-size: 11px;
  color: rgba(255,255,255,.3);
  line-height: 1.8;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col li a {
  font-size: 13px;
  color: rgba(255,255,255,.5);
  transition: color var(--transition);
}
.footer-col li a:hover { color: var(--teal-light); }
.footer-col li:not(a) {
  font-size: 13px;
  color: rgba(255,255,255,.45);
}
.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,.25);
}

/* ═══════════════════════════════════════════
   BACK TO TOP
   ═══════════════════════════════════════════ */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(30,111,255,.3);
}
.back-top.show {
  opacity: 1;
  transform: translateY(0);
}
.back-top:hover { background: var(--blue-dark); }

/* ═══════════════════════════════════════════
   ARTICLE MODAL
   ═══════════════════════════════════════════ */
.article-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.article-modal.open { display: flex; }
.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,22,40,.6);
  backdrop-filter: blur(8px);
}
.modal-content {
  position: relative;
  background: var(--surface);
  border-radius: var(--radius-lg);
  max-width: 760px;
  width: 100%;
  max-height: 85vh;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: modalIn .3s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(.95) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 36px; height: 36px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.modal-close:hover { background: var(--blue); color: #fff; border-color: var(--blue); }
.modal-body {
  padding: 40px 40px 48px;
  overflow-y: auto;
  max-height: 85vh;
}
.modal-body h1 {
  font-size: 26px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 8px;
  line-height: 1.3;
}
.modal-body .meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
  display: flex;
  gap: 16px;
}
.modal-body .content {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.85;
}
.modal-body .content h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin: 28px 0 12px;
}
.modal-body .content p { margin-bottom: 14px; }
.modal-body .content ul {
  margin: 12px 0;
  padding-left: 20px;
  list-style: disc;
}
.modal-body .content li {
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width: 1024px) {
  .tech-cards, .team-grid, .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .innovation-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline-horizontal { grid-template-columns: 1fr; gap: 32px; }
  .finance-highlight { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 16px 24px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 13px 12px;
    font-size: 15px;
    border-radius: 10px;
  }
  .nav-links a:hover { background: var(--surface-2); }
  .nav-links a.nav-cta { text-align: center; margin-top: 8px; }
  .nav-links a.nav-cta:hover { background: var(--blue); }
  .nav-toggle { display: flex; padding: 10px; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero { padding: 96px 20px 48px; }
  .hero-title { font-size: clamp(28px, 8vw, 48px); }
  .hero-desc { margin-bottom: 28px; }
  .hero-actions { margin-bottom: 40px; }
  .hero-stats { gap: 16px; }
  .stat-divider { display: none; }

  .section { padding: 64px 0; }
  .section-header { margin-bottom: 40px; }
  .section-subtitle { font-size: 15px; }

  .about-grid, .tech-cards, .team-grid, .partner-showcase,
  .blog-grid { grid-template-columns: 1fr; }
  .about-card { padding: 24px; }
  .tech-card { padding: 26px 22px; }
  .product-layout { grid-template-columns: 1fr; gap: 28px; }
  .product-tabs { gap: 8px; margin-bottom: 28px; }
  .tab-btn { padding: 9px 16px; font-size: 13px; }
  .innovation-grid { grid-template-columns: 1fr; }
  .team-summary { padding: 22px; font-size: 14px; }
  .finance-highlight { grid-template-columns: 1fr 1fr; gap: 14px; }
  .finance-card { padding: 18px 12px; }
  .finance-num { font-size: 24px; }

  .blog-list-item { flex-direction: column; gap: 14px; padding: 22px; }
  .blog-list-date { width: 100%; display: flex; align-items: baseline; gap: 8px; padding: 10px 14px; text-align: left; }
  .blog-list-date .day { font-size: 20px; }

  .form-row, .form-group.full { grid-column: span 1; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-form-wrap { display: none; }
  .contact-grid .contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-brand { text-align: center; }
  .footer-logo { justify-content: center; }
  .footer-col { text-align: center; }
  .modal-body { padding: 28px 24px; }
  .article-modal .modal-content { width: 94vw; max-height: 86vh; }
}
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .finance-highlight { grid-template-columns: 1fr; }
  .stat-num { font-size: 24px; }
  .stat-label { font-size: 12px; }
  .hero-badge { font-size: 11px; padding: 6px 12px; }
  .hero-desc { font-size: 15px; }
  .section-title { font-size: 26px; }
  .section-tag { font-size: 11px; padding: 5px 13px; }
  .container { padding: 0 18px; }
  .product-tabs { flex-wrap: wrap; }
  .tab-btn { flex: 1; min-width: 100px; }
  .blog-list-content h3 { font-size: 16px; }
  .footer-bottom p { font-size: 12px; }
  .contact-grid .contact-info { grid-template-columns: 1fr; }
  .icp-beian { font-size: 12px; }
}

/* ═══════════════════════════════════════════
   视觉精修增强（2026-08）
   ═══════════════════════════════════════════ */

/* ── 主按钮渐变升级 ───────────────────────── */
.btn-primary {
  background: linear-gradient(135deg, var(--blue) 0%, #3b82f6 60%, var(--teal) 130%);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--blue-dark) 0%, #2563eb 60%, var(--teal) 130%);
}

/* ── 导航 CTA 按钮 ────────────────────────── */
.nav-links a.nav-cta {
  color: var(--blue);
  background: rgba(30,111,255,.08);
  padding: 8px 18px;
  border-radius: 10px;
  font-weight: 600;
}
.nav-links a.nav-cta::after { display: none; }
.nav-links a.nav-cta:hover {
  background: var(--blue);
  color: #fff;
}

/* ── 浅色背景上的 ghost 按钮（博客"查看全部"） ── */
.blog-more .btn-ghost {
  color: var(--blue);
  border-color: rgba(30,111,255,.35);
}
.blog-more .btn-ghost:hover {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

/* ── FAQ 手风琴 ───────────────────────────── */
.faq { background: var(--surface); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-item[open] {
  border-color: rgba(30,111,255,.3);
  box-shadow: var(--shadow-sm);
  background: var(--surface);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 56px 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--navy);
  position: relative;
  line-height: 1.5;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-icon {
  position: absolute;
  right: 22px;
  top: 50%;
  width: 12px;
  height: 12px;
  transform: translateY(-50%);
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--blue);
  border-radius: 2px;
  transition: transform .25s ease;
}
.faq-icon::before { left: 0; top: 5px; width: 12px; height: 2px; }
.faq-icon::after { left: 5px; top: 0; width: 2px; height: 12px; }
.faq-item[open] .faq-icon::after { transform: rotate(90deg); opacity: 0; }
.faq-answer { padding: 0 24px 22px; }
.faq-answer p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; }

@media (max-width: 768px) {
  .faq-item summary { font-size: 15px; padding: 16px 48px 16px 18px; }
  .faq-answer { padding: 0 18px 18px; }
}

/* ── 表单输入聚焦精修 ─────────────────────── */
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(30,111,255,.1);
}

/* ── 卡片 hover 统一精修 ──────────────────── */
.tech-card:hover,
.team-card:hover,
.partner-card:hover,
.blog-card:hover {
  border-color: rgba(30,111,255,.25);
}

/* ── 无障碍：减少动效偏好 ─────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ── ICP 备案（页底居中） ─────────────────── */
.footer-bottom {
  text-align: center;
}
.icp-beian {
  margin-top: 8px;
  font-size: 13px;
}
.icp-beian a {
  color: rgba(255,255,255,.55);
  transition: color var(--transition);
}
.icp-beian a:hover {
  color: #fff;
  text-decoration: underline;
}

/* ── 产品大屏测试图容器 ───────────────────── */
.visual-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(30,111,255,.18);
  transition: transform var(--transition), box-shadow var(--transition);
}
.visual-frame:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(10,22,40,.22);
}
.visual-frame img {
  width: 100%;
  height: auto;
  display: block;
}
.visual-note {
  position: absolute;
  left: 12px;
  bottom: 10px;
  font-size: 11px;
  color: rgba(255,255,255,.45);
  background: rgba(10,22,40,.55);
  backdrop-filter: blur(4px);
  padding: 3px 10px;
  border-radius: 10px;
}