/* =============================================
   Font stacks optimized for Chinese systems.
   Google Fonts removed — blocked in mainland China.
   For production, self-host DM Sans, Space Grotesk &
   Fira Code .woff2 files from a domestic CDN/OSS.
   ============================================= */

/* 页面过渡效果
   Initial state covers the viewport so the unstyled-content flash
   between Tailwind CDN load + GSAP boot is hidden behind it.
   GSAP _initPageTransition then animates scaleY 1 → 0 to reveal. */
.page-transition-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #0A0A0F;
  z-index: 99999;
  pointer-events: none;
  transform: scaleY(1);
  transform-origin: top;
}

/* If JS is disabled, the overlay must not block content forever.
   This selector is set by the inline boot script in each page's <head>. */
html.no-js .page-transition-overlay {
  display: none;
}

:root {
  --bg-primary: #07070C;
  --bg-secondary: #0C0C14;
  --bg-card: #111118;
  --bg-card-hover: #181825;
  --bg-card-solid: #1A1A28;
  --bg-card-raised: #1E1E30;
  --text-primary: #F8FAFC;
  --text-secondary: #E2E8F0;
  --text-muted: #64748B;
  --accent: #3B82F6;
  --accent-bright: #60A5FA;
  --accent-hover: #2563EB;
  --accent-subtle: rgba(59, 130, 246, 0.06);
  --accent-border: rgba(59, 130, 246, 0.12);
  --accent-glow: rgba(59, 130, 246, 0.1);
  --warm: #F59E0B;
  --warm-subtle: rgba(245, 158, 11, 0.08);
  --warm-border: rgba(245, 158, 11, 0.15);
  --success: #22C55E;
  --border-color: rgba(255, 255, 255, 0.05);
  --border-hover: rgba(255, 255, 255, 0.10);
  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.3);
  --shadow-elevated: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.08);
  --glass-bg: rgba(17, 17, 24, 0.75);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-blur: 16px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.05) 0%, transparent 60%),
    radial-gradient(ellipse 40% 30% at 85% 80%, rgba(245, 158, 11, 0.02) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Subtle noise grain overlay — eliminates the "plastic flat" look */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
  pointer-events: none;
  z-index: 0;
}

body > * {
  position: relative;
  z-index: 1;
}

::selection {
  background: rgba(59, 130, 246, 0.25);
  color: #ffffff;
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.15);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.25);
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

@media (min-width: 768px) {
  .container {
    padding: 0 48px;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 64px;
  }
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-bright), #93C5FD);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 600;
  font-size: 15px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  will-change: transform;
  transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 6px 24px rgba(245, 158, 11, 0.25);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid var(--border-hover);
  border-radius: 10px;
  cursor: pointer;
  backdrop-filter: blur(8px);
  will-change: transform;
  transition: border-color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.btn-secondary:hover {
  border-color: var(--warm);
  background: var(--warm-subtle);
  box-shadow: 0 0 24px rgba(245, 158, 11, 0.08);
  transform: translateY(-1px);
}

.btn-secondary:active {
  transform: translateY(0);
}

.btn-neon {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  color: var(--accent);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid var(--accent-border);
  border-radius: 10px;
  cursor: pointer;
  background: var(--accent-subtle);
  will-change: transform;
}

.btn-neon:hover {
  background: rgba(59, 130, 246, 0.12);
  border-color: var(--accent);
}

.section {
  padding: 80px 0;
}

@media (min-width: 768px) {
  .section {
    padding: 120px 0;
  }
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  border-radius: 100px;
  color: var(--accent-bright);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
}

/* Warm variant — for data/CTA sections */
.section-label-warm {
  background: var(--warm-subtle);
  border-color: var(--warm-border);
  color: var(--warm);
}

.section-title {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.section-desc {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 600px;
  line-height: 1.7;
}

/* ---- Generic card — subtle glass-morphism, no top-line gimmick ---- */
.card {
  background: linear-gradient(160deg, var(--bg-card) 0%, rgba(22, 22, 34, 0.6) 100%);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  backdrop-filter: blur(var(--glass-blur));
  position: relative;
  overflow: hidden;
  will-change: transform, opacity;
  transition: border-color 0.35s ease, background 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
}

.card:hover {
  border-color: var(--accent-border);
  background: linear-gradient(160deg, var(--bg-card-hover) 0%, rgba(28, 28, 42, 0.7) 100%);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  transform: translateY(-2px);
}

.icon-box {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  margin-bottom: 20px;
  will-change: transform;
}

.card:hover .icon-box {
  background: var(--accent);
  border-color: transparent;
  color: #ffffff;
}

.divider {
  height: 1px;
  background: var(--border-color);
  margin: 0;
  border: none;
}

.navbar {
  position: fixed;
  top: 16px;
  left: 16px;
  right: 16px;
  z-index: 50;
  background: rgba(10, 10, 15, 0.75);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 0 24px;
  will-change: transform, opacity;
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.92);
  border-color: rgba(255, 255, 255, 0.06);
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.5);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.navbar-logo svg {
  width: 32px;
  height: 32px;
}

.navbar-menu {
  display: none;
  list-style: none;
  gap: 4px;
}

@media (min-width: 1024px) {
  .navbar-menu {
    display: flex;
    align-items: center;
  }
}

.navbar-menu a {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 8px;
  cursor: pointer;
  position: relative;
  will-change: transform;
}

.navbar-menu a:hover,
.navbar-menu a.active {
  color: var(--text-primary);
  background: rgba(148, 163, 184, 0.06);
}

.navbar-menu a.active {
  color: var(--accent);
}

.navbar-menu a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.navbar-dropdown {
  position: relative;
}

.navbar-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  min-width: 200px;
  background: rgba(22, 22, 30, 0.95);
  backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  padding: 8px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
  z-index: 50;
}

.navbar-dropdown:hover .navbar-dropdown-menu,
.navbar-dropdown-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.navbar-dropdown-menu a {
  padding: 10px 16px;
  font-size: 14px;
  border-radius: 8px;
}

.navbar-dropdown-menu a:hover {
  background: var(--accent-subtle);
  color: var(--accent);
}

.navbar-cta {
  display: none;
}

@media (min-width: 1024px) {
  .navbar-cta {
    display: inline-flex;
  }
}

.mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(148, 163, 184, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  cursor: pointer;
  color: var(--text-primary);
}

.mobile-toggle:hover {
  border-color: var(--border-hover);
  background: rgba(148, 163, 184, 0.08);
}

@media (min-width: 1024px) {
  .mobile-toggle {
    display: none;
  }
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  width: min(300px, 85vw);
  height: 100vh;
  height: 100dvh;
  background: rgba(14, 14, 20, 0.98);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 100;
  padding: 24px 20px;
  overflow-y: auto;
  border-left: 1px solid var(--glass-border);
  will-change: transform;
}

.mobile-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 99;
  will-change: opacity;
}

.mobile-overlay.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.mobile-menu-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(148, 163, 184, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  cursor: pointer;
  color: var(--text-primary);
}

.mobile-menu-close:hover {
  border-color: var(--border-hover);
  background: rgba(148, 163, 184, 0.08);
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-menu nav a {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 10px;
  cursor: pointer;
}

.mobile-menu nav a:hover,
.mobile-menu nav a.active {
  color: var(--text-primary);
  background: rgba(148, 163, 184, 0.06);
}

.mobile-menu nav a.active {
  color: var(--accent);
}

.mobile-menu .mobile-sub-menu {
  padding-left: 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mobile-menu .mobile-sub-menu a {
  font-size: 14px;
  padding: 8px 16px;
}

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 64px 0 32px;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.3;
}

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

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 32px;
  }
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  margin-top: 16px;
  max-width: 280px;
}

.footer-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

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

.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
  cursor: pointer;
  will-change: transform;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
  font-size: 13px;
  color: var(--text-muted);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-bottom a {
  color: var(--text-muted);
  cursor: pointer;
}

.footer-bottom a:hover {
  color: var(--text-primary);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.breadcrumb a {
  color: var(--text-muted);
  cursor: pointer;
}

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

.breadcrumb span {
  color: var(--text-primary);
}

.page-hero {
  padding: 160px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .page-hero {
    padding: 180px 0 100px;
  }
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(rgba(148, 163, 184, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 0%, transparent 100%);
}

.page-hero .section-title,
.page-hero .page-hero-title {
  margin-bottom: 20px;
}

.page-hero .section-desc,
.page-hero .page-hero-desc {
  margin: 0 auto;
}

/* ---- About hero — left-aligned text + founding year badge ---- */
.about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

@media (min-width: 768px) {
  .about-hero-grid {
    grid-template-columns: 1fr auto;
    gap: 80px;
  }
}

.about-hero-text .page-hero-title,
.about-hero-text .page-hero-desc {
  text-align: left;
  margin-left: 0;
}

.about-hero-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 32px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  position: relative;
  overflow: hidden;
}

.about-hero-badge::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(245,158,11,0.08) 0%, transparent 60%);
  pointer-events: none;
}

.about-hero-year {
  font-size: 64px;
  font-weight: 800;
  color: var(--warm);
  line-height: 1;
  letter-spacing: -0.03em;
}

.about-hero-badge-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.about-hero-badge-line {
  width: 32px;
  height: 2px;
  background: var(--warm);
  border-radius: 1px;
  opacity: 0.4;
}

.about-hero-badge-sub {
  font-size: 13px;
  color: var(--text-muted);
}

/* ---- Services hero — oversized number + text ---- */
.services-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 768px) {
  .services-hero-grid {
    grid-template-columns: auto 1fr;
    gap: 72px;
  }
}

.services-hero-number {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.services-hero-num {
  font-size: clamp(80px, 12vw, 140px);
  font-weight: 800;
  color: var(--accent);
  line-height: 0.9;
  letter-spacing: -0.04em;
  opacity: 0.12;
}

.services-hero-num-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-bright);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: -8px;
}

.services-hero-text .page-hero-title,
.services-hero-text .page-hero-desc {
  text-align: left;
  margin-left: 0;
}

/* ---- Blog hero — editorial with category tags ---- */
.blog-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.blog-hero-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 100px;
  border: 1px solid var(--border-hover);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s ease;
}

.blog-hero-tag:hover {
  border-color: var(--accent-border);
  color: var(--text-primary);
}

.blog-hero-tag.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ---- Portfolio hero — text + stats side-by-side ---- */
.portfolio-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 768px) {
  .portfolio-hero-grid {
    grid-template-columns: 1fr auto;
    gap: 80px;
  }
}

.portfolio-hero-text .page-hero-title,
.portfolio-hero-text .page-hero-desc {
  text-align: left;
  margin-left: 0;
}

.portfolio-hero-stats {
  display: flex;
  gap: 32px;
}

.portfolio-hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  min-width: 100px;
}

.portfolio-hero-stat-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--warm);
  line-height: 1;
  letter-spacing: -0.03em;
}

.portfolio-hero-stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ---- FAQ hero — decorative watermark question mark ---- */
.page-hero--faq {
  position: relative;
}

.faq-hero-watermark {
  position: absolute;
  top: 50%;
  right: 5%;
  transform: translateY(-50%);
  font-size: min(50vw, 400px);
  font-weight: 800;
  color: rgba(59,130,246,0.025);
  line-height: 1;
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.06em;
}

@media (max-width: 767px) {
  .faq-hero-watermark {
    top: 20%;
    right: -10%;
    font-size: 50vw;
    opacity: 0.5;
  }
}

.loading-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  z-index: 9999;
  will-change: width, opacity;
}

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

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  backdrop-filter: blur(8px);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  background: rgba(15, 23, 42, 0.6);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(100, 116, 139, 0.6);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-error {
  font-size: 13px;
  color: #ef4444;
  margin-top: 4px;
  display: none;
}

.form-group.error .form-error {
  display: block;
}

.form-group.error .form-input,
.form-group.error .form-textarea,
.form-group.error .form-select {
  border-color: #ef4444;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  border-radius: 100px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  backdrop-filter: blur(8px);
  will-change: transform;
}

.tag:hover,
.tag.active {
  background: var(--accent);
  color: #ffffff;
  border-color: transparent;
}

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), transparent);
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -32px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent);
  z-index: 1;
}

.timeline-dot::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.timeline-year {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
}

.timeline-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.timeline-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.accordion-item {
  border: 1px solid var(--border-color);
  border-radius: 14px;
  margin-bottom: 8px;
  overflow: hidden;
  background: var(--bg-card);
  transition: border-color 0.35s ease, box-shadow 0.35s ease;
}

.accordion-item:hover {
  border-color: var(--border-hover);
}

.accordion-item.open {
  border-color: var(--accent-border);
  box-shadow: 0 0 24px rgba(59, 130, 246, 0.06);
}

.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: transparent;
  cursor: pointer;
  width: 100%;
  border: none;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 500;
  font-family: inherit;
  text-align: left;
}

.accordion-header:hover {
  background: rgba(148, 163, 184, 0.03);
}

.accordion-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  flex-shrink: 0;
  will-change: transform;
}

.accordion-item.open .accordion-icon {
  color: var(--accent);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
}

.accordion-body-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: var(--text-muted);
  cursor: pointer;
  z-index: 40;
  will-change: transform, opacity;
}

.back-to-top:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-subtle);
}

.stat-number {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.marquee {
  overflow: hidden;
  white-space: nowrap;
}

.marquee-inner {
  display: inline-flex;
}

.glow-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  margin: 0;
  border: none;
  opacity: 0.3;
  will-change: transform;
}

/* Warm variant — use between data-heavy sections */
.glow-line-warm {
  background: linear-gradient(90deg, transparent, var(--warm), transparent);
  opacity: 0.25;
}

.portfolio-item {
  will-change: transform, opacity;
}

.hero-section {
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 160px;
  padding-bottom: 80px;
}

.hero-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 0%, transparent 100%);
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  will-change: transform, opacity;
}

.hero-orb-1 {
  width: 500px;
  height: 500px;
  top: -10%;
  left: 30%;
  background: rgba(59, 130, 246, 0.06);
}

.hero-orb-2 {
  width: 400px;
  height: 400px;
  bottom: 0;
  right: -5%;
  background: rgba(59, 130, 246, 0.03);
}

.hero-orb-3 {
  width: 300px;
  height: 300px;
  top: 30%;
  left: -5%;
  background: rgba(96, 165, 250, 0.02);
}

.hero-glow-line {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  pointer-events: none;
  opacity: 0;
  will-change: transform, opacity;
}

.hero-glow-line-1 {
  top: 30%;
  left: 0;
  right: 0;
}

.hero-glow-line-2 {
  bottom: 25%;
  left: 0;
  right: 0;
}

.hero-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(59, 130, 246, 0.08);
  pointer-events: none;
  will-change: transform, opacity;
  opacity: 0;
}

.hero-ring-1 {
  width: 600px;
  height: 600px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.hero-ring-2 {
  width: 900px;
  height: 900px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-color: rgba(59, 130, 246, 0.04);
}

.hero-crosshair {
  position: absolute;
  width: 20px;
  height: 20px;
  pointer-events: none;
  opacity: 0;
  will-change: transform, opacity;
}

.hero-crosshair::before,
.hero-crosshair::after {
  content: '';
  position: absolute;
  background: rgba(59, 130, 246, 0.3);
}

.hero-crosshair::before {
  width: 1px;
  height: 100%;
  left: 50%;
}

.hero-crosshair::after {
  width: 100%;
  height: 1px;
  top: 50%;
}

.hero-crosshair-1 {
  top: 20%;
  right: 15%;
}

.hero-crosshair-2 {
  bottom: 30%;
  left: 12%;
}

.hero-crosshair-2::before,
.hero-crosshair-2::after {
  background: rgba(59, 130, 246, 0.2);
}

.hero-diamond {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 1px solid rgba(59, 130, 246, 0.25);
  transform: rotate(45deg);
  top: 25%;
  left: 18%;
  pointer-events: none;
  opacity: 0;
  will-change: transform, opacity;
}

.hero-container {
  position: relative;
  z-index: 10;
}

.hero-content {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.hero-label-wrap {
  margin-bottom: 24px;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(245,158,11,0.06);
  border: 1px solid rgba(245,158,11,0.12);
  border-radius: 100px;
  color: var(--warm);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  backdrop-filter: blur(8px);
  will-change: transform, opacity;
}

.hero-label-text {
  display: inline-block;
  will-change: transform;
}

.hero-title {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: clamp(36px, 7vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.hero-title-line {
  display: block;
  overflow: hidden;
  will-change: transform, opacity;
}

.hero-title-accent {
  font-size: clamp(42px, 8vw, 84px);
}

.hero-desc {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.7;
  will-change: transform, opacity;
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  margin-bottom: 48px;
}

.hero-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  will-change: transform, opacity;
}

.hero-feature-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-subtle);
  color: var(--accent);
  will-change: transform;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.hero-cta-primary,
.hero-cta-secondary {
  will-change: transform, opacity;
}

.hero-cta-text,
.hero-cta-icon {
  display: inline-flex;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 10;
  will-change: transform, opacity;
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  will-change: scaleY, transform;
}

.hero-scroll-text {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .hero-section {
    padding-top: 120px;
    padding-bottom: 60px;
  }
  .hero-features {
    gap: 16px;
  }
  .hero-ring,
  .hero-glow-line,
  .hero-crosshair,
  .hero-diamond {
    display: none;
  }
}

.services-showcase {
  position: relative;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.services-showcase::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.04) 0%, transparent 60%);
  transform: translateY(-50%);
  pointer-events: none;
}

.services-showcase-inner {
  display: flex;
  min-height: 100vh;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .services-showcase-inner {
    padding: 0 48px;
  }
}

@media (min-width: 1024px) {
  .services-showcase-inner {
    padding: 0 64px;
  }
}

.services-left {
  flex: 0 0 320px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 80px 0;
  position: relative;
  border-right: 1px solid var(--border-color);
  margin-right: 48px;
}

.services-left::before {
  content: '';
  position: absolute;
  right: -1px;
  top: 20%;
  height: 60%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--accent), transparent);
  opacity: 0.3;
}

@media (max-width: 1023px) {
  .services-showcase-inner {
    flex-direction: column;
  }
  .services-left {
    flex: none;
    text-align: center;
    align-items: center;
    padding: 64px 0 32px;
    border-right: none;
    margin-right: 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 32px;
    margin-bottom: 0;
  }
  .services-left::before {
    display: none;
  }
}

.services-progress {
  margin-top: 40px;
  width: 100%;
}

.services-progress-bar {
  width: 100%;
  height: 2px;
  background: var(--border-color);
  border-radius: 1px;
  margin-bottom: 28px;
  overflow: hidden;
}

.services-progress-fill {
  width: 25%;
  height: 100%;
  background: var(--accent);
  border-radius: 1px;
  will-change: width;
  box-shadow: 0 0 8px rgba(59, 130, 246, 0.4);
}

.services-progress-dots {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.services-dot {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: 10px;
  cursor: pointer;
  will-change: background, opacity;
  position: relative;
}

.services-dot::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background: var(--accent);
  border-radius: 2px;
  will-change: height;
}

.services-dot-active::before {
  height: 24px;
}

.services-dot:hover {
  background: rgba(255, 255, 255, 0.03);
}

.services-dot-active {
  background: var(--accent-subtle);
}

.services-dot-num {
  font-family: 'PingFang SC', 'Microsoft YaHei', monospace;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  width: 24px;
  letter-spacing: 0.5px;
  will-change: color;
}

.services-dot-active .services-dot-num {
  color: var(--accent);
}

.services-dot-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  will-change: color;
}

.services-dot-active .services-dot-label {
  color: var(--text-primary);
}

.services-right {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.services-slides {
  position: relative;
  width: 100%;
  min-height: 420px;
}

.service-slide {
  position: absolute;
  inset: 0;
  display: flex;
  gap: 48px;
  padding: 0;
  background: transparent;
  border: none;
  will-change: transform, opacity;
}

@media (max-width: 1023px) {
  .service-slide {
    position: relative;
    flex-direction: column;
    gap: 24px;
    padding: 32px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
  }
}

.service-slide-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 28px;
  min-width: 0;
  will-change: transform, opacity;
}

@media (max-width: 1023px) {
  .service-slide-content {
    gap: 20px;
  }
}

.service-slide-header {
  display: flex;
  align-items: center;
  gap: 20px;
  position: relative;
  will-change: transform, opacity;
}

@media (max-width: 1023px) {
  .service-slide-header {
    gap: 16px;
  }
}

.service-slide-number {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 48px;
  font-weight: 700;
  color: rgba(59, 130, 246, 0.1);
  line-height: 1;
  letter-spacing: -0.04em;
  position: relative;
  z-index: 1;
  will-change: transform, opacity;
}

@media (max-width: 1023px) {
  .service-slide-number {
    font-size: 28px;
    color: var(--accent);
  }
}

.service-slide-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  position: relative;
  z-index: 1;
  will-change: transform, opacity;
}

@media (max-width: 1023px) {
  .service-slide-icon {
    width: 44px;
    height: 44px;
  }
}

.service-slide-body {
  display: flex;
  flex-direction: column;
  will-change: transform, opacity;
}

.service-slide-title {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: clamp(24px, 2.8vw, 32px);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -0.02em;
  will-change: transform, opacity;
}

.service-slide-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 520px;
  will-change: transform, opacity;
}

.service-slide-features {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 24px;
  will-change: transform, opacity;
}

.service-slide-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 10px 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
}

.feature-check {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent);
  flex-shrink: 0;
}

.feature-check svg {
  width: 10px;
  height: 10px;
}

.service-slide-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  padding: 8px 18px;
  border-radius: 8px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  width: fit-content;
  will-change: transform, opacity;
}

.service-slide-preview {
  flex: 0 0 42%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: center;
  will-change: transform, opacity;
  perspective: 1000px;
}

.mockup-browser {
  display: flex;
  flex-direction: column;
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.03),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  will-change: transform, opacity;
  transform: rotateY(-3deg) rotateX(1deg);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  width: 100%;
}

.mockup-browser:hover {
  transform: rotateY(0deg) rotateX(0deg) translateY(-4px);
  box-shadow:
    0 8px 40px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(59, 130, 246, 0.1),
    0 0 30px rgba(59, 130, 246, 0.05),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.mockup-browser-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-color);
  min-height: 38px;
}

.mockup-browser-dots {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.mockup-browser-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: block;
}

.mockup-browser-dots span:nth-child(1) {
  background: #FF5F57;
  box-shadow: 0 0 4px rgba(255, 95, 87, 0.3);
}

.mockup-browser-dots span:nth-child(2) {
  background: #FEBC2E;
  box-shadow: 0 0 4px rgba(254, 188, 46, 0.3);
}

.mockup-browser-dots span:nth-child(3) {
  background: #28C840;
  box-shadow: 0 0 4px rgba(40, 200, 64, 0.3);
}

.mockup-browser-url {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 6px;
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  overflow: hidden;
  white-space: nowrap;
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.mockup-url-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  color: var(--text-muted);
  opacity: 0.4;
}

.mockup-browser-actions {
  flex-shrink: 0;
  color: var(--text-muted);
  opacity: 0.3;
  cursor: pointer;
  padding: 2px;
}

.mockup-browser-actions:hover {
  opacity: 0.6;
}

.mockup-browser-body {
  position: relative;
  overflow: hidden;
}

.mockup-browser-body img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}

.mockup-browser-body::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(10, 10, 15, 0.4) 100%);
  pointer-events: none;
}

@media (max-width: 1023px) {
  .service-slide-preview {
    flex: none;
    align-self: auto;
    perspective: none;
  }
  .mockup-browser {
    transform: none;
  }
  .mockup-browser:hover {
    transform: none;
  }
  .mockup-browser-body img {
    aspect-ratio: 16 / 9;
  }
  .service-slide-features {
    grid-template-columns: 1fr;
  }
}

/* ===== 视觉效果 - 替换AI图片 ===== */
.visual-effect {
  width: 100%;
  height: 100%;
  min-height: 280px;
  position: relative;
  overflow: hidden;
  background: var(--bg-card);
}

/* 网站建设效果 */
.web-effect {
  display: flex;
  align-items: center;
  justify-content: center;
}

.web-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% { background-position: 0 0; }
  100% { background-position: 40px 40px; }
}

.web-nodes {
  position: absolute;
  inset: 0;
}

.web-nodes span {
  position: absolute;
  width: 8px;
  height: 8px;
  background: #3B82F6;
  border-radius: 50%;
  opacity: 0;
  animation: nodePulse 3s ease-in-out infinite;
}

.web-nodes span:nth-child(1) { top: 20%; left: 20%; animation-delay: 0s; }
.web-nodes span:nth-child(2) { top: 40%; left: 60%; animation-delay: 0.5s; }
.web-nodes span:nth-child(3) { top: 60%; left: 30%; animation-delay: 1s; }
.web-nodes span:nth-child(4) { top: 80%; left: 70%; animation-delay: 1.5s; }
.web-nodes span:nth-child(5) { top: 30%; left: 80%; animation-delay: 2s; }
.web-nodes span:nth-child(6) { top: 70%; left: 50%; animation-delay: 2.5s; }
.web-nodes span:nth-child(7) { top: 50%; left: 10%; animation-delay: 0.3s; }
.web-nodes span:nth-child(8) { top: 10%; left: 45%; animation-delay: 0.8s; }
.web-nodes span:nth-child(9) { top: 85%; left: 25%; animation-delay: 1.3s; }
.web-nodes span:nth-child(10) { top: 15%; left: 75%; animation-delay: 1.8s; }

@keyframes nodePulse {
  0%, 100% { opacity: 0; transform: scale(0.5); }
  50% { opacity: 0.8; transform: scale(1); box-shadow: 0 0 10px rgba(59, 130, 246, 0.5); }
}

.web-lines {
  position: relative;
  z-index: 2;
  width: 90%;
  max-width: 350px;
}

.web-lines svg {
  width: 100%;
  height: auto;
}

/* 营销效果 */
.marketing-effect {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.chart-container {
  width: 100%;
  max-width: 360px;
  position: relative;
}

.chart-container svg {
  width: 100%;
  height: auto;
}

.floating-metrics {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 20px;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: 12px;
  animation: metricFloat 3s ease-in-out infinite;
}

.metric-item:nth-child(2) {
  animation-delay: 0.5s;
}

.metric-value {
  font-size: 20px;
  font-weight: 700;
  color: #3B82F6;
  font-family: 'PingFang SC', 'Microsoft YaHei', monospace;
}

.metric-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

@keyframes metricFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

/* 品牌效果 */
.brand-effect {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.brand-circle-outer {
  width: 200px;
  height: 200px;
  position: relative;
  z-index: 2;
}

.brand-circle-inner {
  width: 100%;
  height: 100%;
  animation: brandRotate 30s linear infinite;
}

.brand-circle-inner svg {
  width: 100%;
  height: 100%;
}

@keyframes brandRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.brand-particles {
  position: absolute;
  inset: 0;
}

.brand-particles span {
  position: absolute;
  width: 4px;
  height: 4px;
  background: #3B82F6;
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat 4s ease-in-out infinite;
}

.brand-particles span:nth-child(1) { top: 20%; left: 20%; animation-delay: 0s; }
.brand-particles span:nth-child(2) { top: 60%; left: 80%; animation-delay: 1s; }
.brand-particles span:nth-child(3) { top: 80%; left: 40%; animation-delay: 2s; }
.brand-particles span:nth-child(4) { top: 30%; left: 70%; animation-delay: 3s; }
.brand-particles span:nth-child(5) { top: 70%; left: 10%; animation-delay: 1.5s; }

@keyframes particleFloat {
  0%, 100% { opacity: 0; transform: translateY(0) scale(0.5); }
  50% { opacity: 0.8; transform: translateY(-20px) scale(1); }
}

/* 软件效果 */
.software-effect {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.circuit-bg {
  position: absolute;
  inset: 0;
  opacity: 0.5;
}

.circuit-bg svg {
  width: 100%;
  height: 100%;
}

.code-matrix {
  position: relative;
  z-index: 2;
  background: rgba(10, 10, 10, 0.9);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  padding: 24px;
  min-width: 280px;
  backdrop-filter: blur(10px);
}

.code-lines {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.code-line {
  display: block;
  font-family: 'Fira Code', 'Source Code Pro', 'Consolas', 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.6;
  color: #e0e0e0;
  opacity: 0;
  animation: codeReveal 0.5s ease forwards;
}

.code-line:nth-child(1) { animation-delay: 0.1s; }
.code-line:nth-child(2) { animation-delay: 0.2s; }
.code-line:nth-child(3) { animation-delay: 0.3s; }
.code-line:nth-child(4) { animation-delay: 0.4s; }
.code-line:nth-child(5) { animation-delay: 0.5s; }
.code-line:nth-child(6) { animation-delay: 0.6s; }
.code-line:nth-child(7) { animation-delay: 0.7s; }
.code-line:nth-child(8) { animation-delay: 0.8s; }
.code-line:nth-child(9) { animation-delay: 0.9s; }
.code-line:nth-child(10) { animation-delay: 1s; }

@keyframes codeReveal {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

.code-keyword { color: #c792ea; }
.code-func { color: #82aaff; }
.code-class { color: #ffcb6b; }
.code-string { color: #c3e88d; }

.code-cursor {
  display: inline-block;
  width: 2px;
  height: 18px;
  background: #3B82F6;
  margin-left: 4px;
  vertical-align: middle;
  animation: cursorBlink 1s step-end infinite;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ===== 核心优势模块 ===== */
.advantages-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 64px;
  padding: 40px;
  background: linear-gradient(180deg, rgba(59,130,246,0.04) 0%, transparent 100%);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  position: relative;
  overflow: hidden;
}

.advantages-stats::before {
  content: '';
  position: absolute;
  top: 0;
  left: 30%;
  right: 30%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59,130,246,0.3), transparent);
}

@media (min-width: 768px) {
  .advantages-stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    padding: 48px 32px;
  }
}

.advantage-stat {
  text-align: center;
  padding: 16px 0;
  position: relative;
}

.advantage-stat:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: var(--border-color);
}

@media (max-width: 767px) {
  .advantage-stat:nth-child(2)::after {
    display: none;
  }
  .advantage-stat:nth-child(odd)::after {
    right: 0;
  }
  .advantage-stat:nth-child(even)::after {
    display: none;
  }
}

.advantage-stat-number {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.03em;
  display: inline;
}

.advantage-stat-unit {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 600;
  color: var(--accent);
  opacity: 0.6;
  display: inline;
  margin-left: 2px;
}

.advantage-stat-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 8px;
  letter-spacing: 0.02em;
}

.advantages-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .advantages-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---- Advantage cards — left accent bar, gradient border on hover ---- */
.advantage-card {
  padding: 36px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 3px solid transparent;
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  will-change: transform, opacity;
  transition: border-color 0.35s ease, background 0.35s ease, border-left-color 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
}

.advantage-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 100% 100% at 0% 50%, rgba(59,130,246,0.06) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.advantage-card:hover {
  border-color: var(--accent-border);
  border-left-color: var(--accent);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-card);
  transform: translateY(-3px);
}

.advantage-card:hover::after {
  opacity: 1;
}

.advantage-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  margin-bottom: 20px;
}

.advantage-card-title {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

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

/* ---- Portfolio cards — image-dominant, refined overlay, corner accent ---- */
.portfolio-card {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  will-change: transform;
  transition: border-color 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
}

.portfolio-card::before {
  content: '';
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border-top: 1px solid rgba(59,130,246,0.2);
  border-right: 1px solid rgba(59,130,246,0.2);
  border-radius: 0 8px 0 0;
  z-index: 3;
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

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

.portfolio-card:hover::before {
  opacity: 1;
}

.portfolio-card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

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

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

.portfolio-card-img::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(to top, rgba(10, 10, 15, 0.8), transparent);
  pointer-events: none;
  z-index: 1;
}

.portfolio-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,10,15,0.2) 0%, rgba(10,10,15,0.65) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.35s ease;
  z-index: 2;
}

.portfolio-card:hover .portfolio-card-overlay {
  opacity: 1;
}

.portfolio-card-link {
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: 8px;
  background: rgba(59, 130, 246, 0.25);
  border: 1px solid rgba(59, 130, 246, 0.35);
  backdrop-filter: blur(12px);
  transition: background 0.25s ease, border-color 0.25s ease;
}

.portfolio-card:hover .portfolio-card-link {
  background: rgba(59, 130, 246, 0.35);
  border-color: rgba(59, 130, 246, 0.5);
}

.portfolio-card-info {
  padding: 20px 24px;
}

.portfolio-card-title {
  color: var(--text-primary);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.portfolio-card-tag {
  color: var(--text-muted);
  font-size: 13px;
}

.cta-section {
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

/* =============================================
   Signature moment — typography breakout
   ============================================= */
.signature-section {
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .signature-section {
    padding: 120px 0;
  }
}

.signature-block {
  text-align: center;
}

.signature-eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
}

.signature-line {
  display: block;
  width: 40px;
  height: 1px;
  background: var(--warm);
  opacity: 0.4;
}

.signature-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--warm);
  letter-spacing: 3px;
}

.signature-body {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: clamp(12px, 3vw, 28px);
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.signature-word {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  letter-spacing: -0.03em;
}

.signature-word--outline {
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(59,130,246,0.35);
  text-stroke: 1.5px rgba(59,130,246,0.35);
}

.signature-sub {
  font-size: 18px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.signature-accent {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.signature-accent-text {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-bright), var(--warm));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.signature-accent-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warm);
  animation: signatureDotPulse 2s ease-in-out infinite;
}

@keyframes signatureDotPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(1.8); }
}

.feature-icon-ring {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  margin-bottom: 16px;
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  flex-shrink: 0;
}

/* ---- Stat cards — number-forward, borderless, glass backdrop ---- */
.stat-card {
  text-align: center;
  padding: 48px 24px 40px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(59,130,246,0.04) 0%, transparent 40%);
  border: none;
  position: relative;
  will-change: transform;
  transition: transform 0.35s ease, background 0.35s ease;
}

.stat-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59,130,246,0.15), transparent);
  transition: opacity 0.35s ease;
  opacity: 0;
}

.stat-card:hover {
  background: linear-gradient(180deg, rgba(59,130,246,0.08) 0%, rgba(59,130,246,0.01) 50%);
  transform: translateY(-4px);
}

.stat-card:hover::after {
  opacity: 1;
}

.contact-link {
  cursor: pointer;
  color: var(--text-muted);
  will-change: color;
}

.marquee-item {
  cursor: pointer;
  will-change: opacity;
}

/* =============================================
   Page Hero (shared across sub-pages)
   ============================================= */
.page-hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
}

.page-hero-content .section-label {
  margin-bottom: 20px;
}

.page-hero-title {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  background: linear-gradient(180deg, var(--text-primary) 30%, rgba(248, 250, 252, 0.65) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-hero-desc {
  font-size: clamp(16px, 2vw, 18px);
  color: var(--text-muted);
  max-width: 640px;
  line-height: 1.7;
  margin: 0 auto;
}

/* =============================================
   About Page
   ============================================= */
.about-story-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

@media (min-width: 1024px) {
  .about-story-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.about-story-text .section-desc {
  margin-bottom: 16px;
}

.about-visual-card {
  background: linear-gradient(160deg, var(--bg-card) 0%, rgba(22,22,34,0.5) 100%);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 40px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.35s ease, box-shadow 0.35s ease;
}

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

.about-visual-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.25), transparent);
}

.about-visual-inner {
  position: relative;
  z-index: 1;
}

.about-icon-large {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 32px;
}

.about-visual-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.about-visual-stat {
  text-align: center;
  padding: 16px 8px;
  background: rgba(59, 130, 246, 0.04);
  border-radius: 12px;
  border: 1px solid rgba(59, 130, 246, 0.08);
}

.about-visual-num {
  display: block;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 800;
  margin-bottom: 4px;
}

.about-visual-label {
  font-size: 12px;
  color: var(--text-muted);
}

/* =============================================
   Values Grid (About page)
   ============================================= */
.values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---- Value cards — gradient background, left border accent ---- */
.value-card {
  padding: 36px 32px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(59,130,246,0.03) 0%, transparent 50%);
  border: 1px solid var(--border-color);
  border-left: 3px solid rgba(59,130,246,0.25);
  transition: border-color 0.35s ease, border-left-color 0.35s ease, background 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
}

.value-card:hover {
  border-color: var(--accent-border);
  border-left-color: var(--accent);
  background: linear-gradient(135deg, rgba(59,130,246,0.06) 0%, rgba(59,130,246,0.01) 60%);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.value-card-icon {
  margin-bottom: 20px;
}

.value-card-title {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

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

/* =============================================
   Timeline (About page)
   ============================================= */
.timeline-content {
  padding: 24px;
  border-radius: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: border-color 0.35s ease, box-shadow 0.35s ease;
}

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

/* =============================================
   Service Detail (Services page)
   ============================================= */
.service-detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

@media (min-width: 1024px) {
  .service-detail-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.service-detail-reverse .service-detail-visual {
  order: 1;
}

@media (min-width: 1024px) {
  .service-detail-reverse .service-detail-visual {
    order: 2;
  }
  .service-detail-reverse .service-detail-content {
    order: 1;
  }
}

.service-detail-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-detail-icon-wrap {
  width: 120px;
  height: 120px;
  border-radius: 24px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.service-detail-icon-wrap::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 24px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.3), transparent, rgba(59, 130, 246, 0.1));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.service-feature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 24px;
}

@media (min-width: 640px) {
  .service-feature-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.service-feature-item {
  padding: 16px;
  border-radius: 12px;
  background: rgba(59,130,246,0.03);
  border: 1px solid var(--border-color);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.service-feature-item:hover {
  border-color: var(--accent-border);
  background: rgba(59,130,246,0.06);
}

.service-feature-item h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.service-feature-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* =============================================
   Process Cards (Services page)
   ============================================= */
.process-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .process-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* ---- Process cards — compact, numbered badge, underline accent ---- */
.process-card {
  padding: 32px 24px 28px;
  border-radius: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: border-color 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
  position: relative;
}

.process-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 25%;
  right: 25%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  border-radius: 1px;
  opacity: 0;
  transition: opacity 0.35s ease;
}

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

.process-card:hover::after {
  opacity: 1;
}

.process-step {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.process-title {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.process-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* =============================================
   Portfolio Filter
   ============================================= */
.portfolio-filter-btn {
  padding: 8px 20px;
  border-radius: 100px;
  border: 1px solid var(--glass-border);
  background: transparent;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s ease;
  backdrop-filter: blur(8px);
}

.portfolio-filter-btn:hover {
  border-color: var(--accent-border);
  color: var(--text-primary);
}

.portfolio-filter-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* =============================================
   Blog Cards
   ============================================= */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---- Blog cards — top accent line, elevated hover ---- */
.blog-card {
  padding: 32px;
  border-radius: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-top: 3px solid transparent;
  transition: border-color 0.35s ease, border-top-color 0.35s ease, background 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
  display: flex;
  flex-direction: column;
  position: relative;
}

.blog-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59,130,246,0.4), transparent);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

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

.blog-card:hover::after {
  opacity: 1;
}

.blog-card-category {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  background: rgba(59,130,246,0.08);
  border: 1px solid rgba(59,130,246,0.15);
  color: var(--accent-bright);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 16px;
  width: fit-content;
}

.blog-card-title {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.blog-card-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 20px;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.blog-card-date {
  font-size: 13px;
  color: var(--text-muted);
}

.blog-card-read {
  font-size: 13px;
  color: var(--accent);
  font-weight: 500;
  cursor: pointer;
}

/* =============================================
   Blog Post Detail
   ============================================= */
.blog-post-hero {
  padding: 160px 0 64px;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .blog-post-hero {
    padding: 180px 0 80px;
  }
}

.blog-post-hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.blog-post-meta-bar {
  max-width: 760px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.blog-post-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 14px;
  text-decoration: none;
  margin-bottom: 32px;
  transition: color 0.2s ease;
}

.blog-post-back:hover {
  color: var(--accent);
}

.blog-post-category {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 24px;
}

.blog-post-title {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.blog-post-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 14px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.blog-post-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.blog-post-meta-item svg {
  flex-shrink: 0;
}

.blog-post-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 0 64px;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.85;
}

.blog-post-content > p:first-of-type {
  font-size: 19px;
  color: var(--text-primary);
  font-weight: 400;
  line-height: 1.7;
  margin-bottom: 32px;
  padding-left: 20px;
  border-left: 3px solid var(--accent);
}

.blog-post-content h2 {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  margin: 48px 0 16px;
  position: relative;
  padding-left: 16px;
}

.blog-post-content h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent), rgba(59, 130, 246, 0.2));
}

.blog-post-content h3 {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.005em;
  margin: 32px 0 12px;
}

.blog-post-content p {
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.blog-post-content ul,
.blog-post-content ol {
  margin: 0 0 24px 0;
  padding-left: 24px;
}

.blog-post-content li {
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.blog-post-content li::marker {
  color: var(--accent);
}

.blog-post-content strong {
  color: var(--text-primary);
  font-weight: 600;
}

.blog-post-content blockquote {
  margin: 32px 0;
  padding: 24px 28px;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  font-style: italic;
  color: var(--text-primary);
}

.blog-post-content blockquote p:last-child {
  margin-bottom: 0;
}

.blog-post-content code {
  font-family: 'Fira Code', 'Source Code Pro', 'Consolas', 'Courier New', monospace;
  font-size: 14px;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.15);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
}

.blog-post-callout {
  margin: 32px 0;
  padding: 24px 28px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.06), rgba(59, 130, 246, 0.02));
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: 14px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.blog-post-callout-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.blog-post-callout-body {
  flex: 1;
}

.blog-post-callout-title {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.blog-post-callout p {
  font-size: 15px;
  margin: 0;
  color: var(--text-muted);
}

.blog-post-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
  margin: 48px 0;
  border: none;
}

.blog-post-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}

.blog-post-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-size: 13px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.blog-post-tag:hover {
  background: var(--accent-subtle);
  border-color: var(--accent-border);
  color: var(--accent);
}

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

.blog-related-title {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 32px;
  letter-spacing: -0.01em;
}

a.blog-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
  height: 100%;
}

/* =============================================
   FAQ
   ============================================= */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-question-text {
  flex: 1;
  text-align: left;
}

.faq-answer p {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}

/* =============================================
   Privacy Page
   ============================================= */
.privacy-content {
  color: var(--text-secondary);
  line-height: 1.8;
}

.privacy-section {
  margin-bottom: 32px;
}

.privacy-section h2 {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.privacy-section p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 12px;
  line-height: 1.8;
}

.privacy-section ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 12px;
}

.privacy-section ul li {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 6px;
  line-height: 1.7;
}

.privacy-section a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* =============================================
   Contact Page — industrial-magazine layout
   ============================================= */

/* ---- Hero — oversized phone number ---- */
.contact-hero {
  position: relative;
  padding: 200px 0 80px;
  overflow: hidden;
}

@media (min-width: 768px) {
  .contact-hero { padding: 220px 0 120px; }
}

.contact-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 60% at 80% 30%, rgba(59,130,246,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 30% 40% at 20% 70%, rgba(59,130,246,0.03) 0%, transparent 50%);
  pointer-events: none;
}

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

@media (min-width: 768px) {
  .contact-hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 80px;
  }
}

.contact-hero-title {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.contact-hero-desc {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 400px;
}

.contact-hero-phone {
  position: relative;
  display: flex;
  justify-content: flex-end;
}

@media (max-width: 767px) {
  .contact-hero-phone { justify-content: flex-start; }
}

.contact-hero-phone-ring {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translate(20%, -50%);
  width: 320px;
  height: 320px;
  border-radius: 50%;
  border: 1px solid rgba(59,130,246,0.08);
  pointer-events: none;
}

@media (max-width: 767px) {
  .contact-hero-phone-ring { right: auto; left: 0; transform: translate(-20%, -50%); }
}

.contact-hero-number {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  text-decoration: none;
  position: relative;
  z-index: 1;
}

@media (max-width: 767px) {
  .contact-hero-number { align-items: flex-start; }
}

.contact-hero-number-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.contact-hero-number-value {
  font-size: clamp(36px, 7vw, 64px);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  transition: color 0.25s ease;
}

.contact-hero-number:hover .contact-hero-number-value {
  color: var(--accent);
}

/* ---- Channels grid — asymmetric 2×2 ---- */
.contact-channels-section {
  padding-top: 0;
}

.contact-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .contact-channels {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .contact-channels {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 20px;
  }
}

.contact-channel-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  transition: border-color 0.35s ease, background 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
}

.contact-channel-card:hover {
  border-color: var(--accent-border);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.contact-channel-card-featured {
  border-color: rgba(59,130,246,0.18);
  background: linear-gradient(135deg, rgba(59,130,246,0.05) 0%, rgba(59,130,246,0.01) 60%);
}

.contact-channel-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-channel-body {
  min-width: 0;
}

.contact-channel-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.contact-channel-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  word-break: break-all;
  transition: color 0.2s ease;
}

a.contact-channel-value:hover {
  color: var(--accent);
}

.contact-channel-sub {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---- Map section ---- */
.contact-map-section {
  padding-top: 0;
}

/* ---- Bottom CTA ---- */
.contact-bottom-cta {
  text-align: center;
  padding: 48px;
  border-radius: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.contact-bottom-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(59,130,246,0.06) 0%, transparent 60%);
  pointer-events: none;
}

.contact-bottom-cta p {
  position: relative;
  z-index: 1;
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 24px;
}

/* =============================================
   Map (Contact page) — custom visual, no iframe login
   ============================================= */
.map-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 7;
  min-height: 360px;
  background: var(--bg-card);
  overflow: hidden;
}

.map-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 30%, transparent 80%);
}

.map-bg-roads {
  position: absolute;
  inset: 0;
  opacity: 0.6;
}

.map-bg-roads svg {
  width: 100%;
  height: 100%;
}

.map-pin-area {
  position: absolute;
  top: 48%;
  left: 42%;
  z-index: 2;
}

.map-pin {
  position: relative;
  width: 24px;
  height: 24px;
  margin-bottom: 8px;
  margin-left: auto;
  margin-right: auto;
}

.map-pin-dot {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow:
    0 0 16px rgba(59, 130, 246, 0.6),
    0 0 32px rgba(59, 130, 246, 0.3);
  z-index: 2;
}

.map-pin-ripple {
  position: absolute;
  top: -4px;
  left: -4px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid rgba(59, 130, 246, 0.3);
  animation: pinRipple 2s ease-out infinite;
}

@keyframes pinRipple {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(3); opacity: 0; }
}

.map-pin-card {
  background: rgba(22, 22, 30, 0.95);
  backdrop-filter: blur(16px);
  border: 1px solid var(--accent-border);
  border-radius: 14px;
  padding: 16px 20px;
  min-width: 220px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  transform: translateX(-50%);
}

.map-pin-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.map-pin-card-header span {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.map-pin-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.map-card {
  position: relative;
  overflow: hidden;
}

.map-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.3;
  z-index: 2;
  pointer-events: none;
}

.map-actions {
  display: flex;
  gap: 12px;
  padding: 20px 28px;
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
}

.map-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--accent);
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  text-decoration: none;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.map-action-btn:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.25);
}

.map-action-btn-outline {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-hover);
}

.map-action-btn-outline:hover {
  background: var(--accent-subtle);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: none;
}

@media (max-width: 640px) {
  .map-visual {
    aspect-ratio: 4 / 3;
    min-height: 260px;
  }
  .map-pin-area {
    top: 45%;
    left: 38%;
  }
  .map-pin-card {
    min-width: 180px;
    padding: 12px 16px;
  }
  .map-actions {
    flex-direction: column;
    padding: 16px 20px;
  }
  .map-action-btn {
    justify-content: center;
  }
}

/* =============================================
   Fade-in / Stagger animation helpers
   GSAP drives the actual animation (gsap.from autoAlpha:0).
   We only set will-change as a perf hint; opacity stays 1
   so non-JS visitors and GSAP's end state both render visible.
   ============================================= */
.fade-in {
  will-change: transform, opacity;
}

.stagger-1, .stagger-2, .stagger-3, .stagger-4,
.stagger-5, .stagger-6, .stagger-7, .stagger-8 {
  /* delays read by GSAP via class regex, not CSS-driven */
}

/* =============================================
   Responsive navbar improvements
   ============================================= */
@media (max-width: 1023px) {
  .navbar-menu {
    display: none;
  }

  .navbar-cta {
    display: none;
  }
}

@media (min-width: 1024px) {
  .mobile-toggle {
    display: none;
  }
}

/* =============================================
   Reduced motion
   ============================================= */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}
