/* ===== 变量 ===== */
:root {
  --bg-primary: #faf7f2;
  --bg-secondary: #f0ebe3;
  --bg-card: #fffcf8;
  --bg-card-hover: #f5f0e8;
  --border: rgba(80, 65, 50, 0.11);
  --text-primary: #2e271f;
  --text-secondary: #6b5f52;
  --text-muted: #9a9085;
  --accent: #3b82f6;
  --accent-light: #2563eb;
  --accent-glow: rgba(59, 130, 246, 0.22);
  --gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 45%, #06b6d4 100%);
  --shadow-sm: 0 2px 8px rgba(60, 45, 30, 0.06);
  --shadow-md: 0 8px 24px rgba(60, 45, 30, 0.08);
  --shadow-lg: 0 16px 48px rgba(60, 45, 30, 0.1);
  --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --header-height: 80px;
  --container: 1500px;
  --radius: 16px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  /* 流体字号：375px 屏约 14px，1200px 约 15px，1700px+ 约 17px */
  --fluid-text: clamp(14px, calc(11px + 0.35vw), 18px);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  font-size: var(--fluid-text);
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  font-size: 1rem;
}

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

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 36px;
  font-size: 1rem;
  font-weight: 500;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.0625rem;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 8px 40px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 48px var(--accent-glow);
}

.btn-outline {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

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

.btn-full {
  width: 100%;
}

/* ===== 导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  transition: var(--transition);
  background: rgba(250, 247, 242, 0.6);
  backdrop-filter: blur(12px);
}

.header.scrolled {
  background: rgba(255, 252, 247, 0.92);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.logo-brand {
  display: flex;
  flex-direction: column;
  gap: 1px;
  line-height: 1.25;
}

.logo-icon {
  width: 55px;
  height: 55px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  border-radius: 12px;
  font-size: 2.125rem;
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
  overflow: hidden;
  flex-shrink: 0;
}

.logo-icon.has-image {
  background: transparent;
  box-shadow: none;
}

.logo-icon-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 12px;
  display: block;
}

.logo-icon-img.hidden {
  display: none !important;
}

.logo-text {
  font-size: 1.625rem;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.logo-slogan {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.6px;
  white-space: nowrap;
  background: linear-gradient(
    90deg,
    var(--accent-light) 0%,
    #a78bfa 40%,
    #22d3ee 70%,
    var(--accent-light) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: sloganShimmer 5s ease-in-out infinite;
  filter: drop-shadow(0 0 6px rgba(59, 130, 246, 0.2));
}

.logo-slogan::before {
  content: '';
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22d3ee;
  box-shadow: 0 0 10px #22d3ee;
  animation: blink 2s ease-in-out infinite;
}

@keyframes sloganShimmer {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 10px 22px;
  font-size: 1.125rem;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
  background: rgba(59, 130, 246, 0.08);
  text-decoration: underline;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-auth,
.nav-user {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-user-link {
  display: inline-flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: inherit;
  border-radius: 10px;
  padding: 4px 8px;
  margin: -4px -8px;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-user-link:hover {
  background: rgba(59, 130, 246, 0.08);
}

.nav-user.hidden,
.nav-auth.hidden {
  display: none;
}

.btn-nav-auth {
  padding: 8px 20px;
  font-size: 1rem;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-nav-auth:hover {
  color: var(--text-primary);
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.06);
}

.btn-nav-register {
  color: #fff;
  background: var(--gradient);
  border-color: transparent;
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-nav-register:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.nav-user-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1;
}

.nav-user-avatar-wrap {
  position: relative;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  overflow: hidden;
  border-radius: 50%;
}

.nav-user-avatar,
.nav-user-avatar-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.nav-user-avatar-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient);
}

.nav-user-avatar-wrap.has-image .nav-user-avatar-fallback {
  display: none;
}

.nav-user-avatar-wrap.has-image .nav-user-avatar {
  display: block;
}

.nav-user-avatar {
  display: none;
}

.avatar-upload-group {
  margin-bottom: 4px;
}

.avatar-upload {
  display: flex;
  align-items: center;
  gap: 16px;
}

.avatar-preview {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 2px dashed var(--border);
  background: rgba(59, 130, 246, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.avatar-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-preview-placeholder {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.avatar-upload-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.avatar-upload-btn {
  cursor: pointer;
}

.avatar-clear-btn {
  font-size: 0.8125rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== 首屏 ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--header-height) + 40px) 0 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

/* 首屏客户评价条 */
.hero-reviews-bar {
  position: relative;
  z-index: 2;
  margin-top: auto;
  padding: 12px 0;
  overflow: hidden;
  border-top: 1px solid var(--border);
  background: rgba(255, 252, 247, 0.75);
  backdrop-filter: blur(14px);
}

.hero-reviews-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 40px;
}

.hero-reviews-label {
  flex-shrink: 0;
  margin: 0;
  font-size: 1.075rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.hero-reviews-label::after {
  content: '';
  display: inline-block;
  width: 1px;
  height: 16px;
  margin-left: 24px;
  background: var(--border);
  vertical-align: middle;
}

.hero-reviews-viewport {
  position: relative;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.hero-reviews-track {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 40px;
}

.hero-reviews-set {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  width: 100%;
  opacity: 0;
  transition: opacity 0.45s ease;
}

.hero-reviews-track.is-visible .hero-reviews-set {
  opacity: 1;
}

.hero-review-item {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  flex: 0 1 auto;
  min-width: 0;
  max-width: calc(50% - 8px);
}

.hero-review-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
}

.hero-review-body {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1;
}

.hero-review-name {
  font-size: 1.0125rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  flex-shrink: 0;
}

.hero-review-text {
  font-size: 1.0125rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.hero-review-time {
  font-size: 0.9125rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  padding-left: 12px;
  border-left: 1px solid var(--border);
  margin-left: 4px;
}

.hero-bg-slides {
  position: absolute;
  inset: 0;
}

.hero-bg-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.4s ease;
}

.hero-bg-slide.active {
  opacity: 1;
}

.hero-bg-slide[data-theme="blue"] {
  background:
    radial-gradient(ellipse 70% 60% at 20% 40%, rgba(59, 130, 246, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 60%, rgba(210, 180, 140, 0.1) 0%, transparent 50%);
}

.hero-bg-slide[data-theme="purple"] {
  background:
    radial-gradient(ellipse 70% 60% at 25% 35%, rgba(139, 92, 246, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 75% 65%, rgba(220, 190, 160, 0.08) 0%, transparent 50%);
}

.hero-bg-slide[data-theme="cyan"] {
  background:
    radial-gradient(ellipse 70% 60% at 30% 40%, rgba(180, 200, 170, 0.1) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 70% 55%, rgba(210, 185, 150, 0.08) 0%, transparent 50%);
}

.hero-bg-slide[data-theme="violet"] {
  background:
    radial-gradient(ellipse 70% 60% at 20% 45%, rgba(167, 139, 250, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 50%, rgba(230, 200, 170, 0.08) 0%, transparent 50%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(180, 160, 130, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(180, 160, 130, 0.06) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 30%, black 10%, transparent 75%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: glowPulse 10s ease-in-out infinite;
}

.hero-glow-1 {
  top: -10%;
  left: 20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(210, 185, 150, 0.15) 0%, transparent 70%);
}

.hero-glow-2 {
  bottom: 10%;
  right: 10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(220, 200, 170, 0.12) 0%, transparent 70%);
  animation-delay: -5s;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.08); }
}

.hero-watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -55%);
  font-size: clamp(7.5rem, 18vw, 17.5rem);
  font-weight: 900;
  letter-spacing: 0.05em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(180, 160, 130, 0.08);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}

.hero-orbit {
  position: absolute;
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-radius: 50%;
  animation: orbitSpin 30s linear infinite;
}

.hero-orbit-1 {
  width: 500px;
  height: 500px;
  top: 10%;
  right: -100px;
}

.hero-orbit-2 {
  width: 350px;
  height: 350px;
  bottom: 20%;
  left: -80px;
  animation-direction: reverse;
  animation-duration: 25s;
}

@keyframes orbitSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-float {
  position: absolute;
  border-radius: 50%;
  background: var(--gradient);
  opacity: 0.6;
  filter: blur(1px);
  animation: float 6s ease-in-out infinite;
}

.hero-float-1 {
  width: 6px;
  height: 6px;
  top: 25%;
  left: 15%;
}

.hero-float-2 {
  width: 8px;
  height: 8px;
  top: 60%;
  right: 20%;
  animation-delay: -2s;
}

.hero-float-3 {
  width: 4px;
  height: 4px;
  top: 40%;
  left: 45%;
  animation-delay: -4s;
}

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

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(48px, 4vw, 80px);
  align-items: center;
  flex: 1;
  padding-bottom: 24px;
}

.hero-content {
  text-align: left;
  position: relative;
  z-index: 2;
  width: 100%;
  min-width: 0;
}

/* 首屏轮播 */
.hero-carousel {
  position: relative;
}

.hero-slides {
  position: relative;
  min-height: 320px;
  height: auto;
  transition: height 0.5s ease;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease, visibility 0.6s;
  pointer-events: none;
  z-index: 0;
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
  z-index: 2;
}

.hero-slide.exit {
  opacity: 0;
  transform: translateY(-16px);
  z-index: 1;
}

.hero-carousel-controls {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.hero-carousel-dots {
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-carousel-dot {
  position: relative;
  width: 80px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: 4px;
  background: rgba(80, 65, 50, 0.1);
  cursor: pointer;
  overflow: hidden;
  transition: background 0.3s ease;
}

.hero-carousel-dot:hover {
  background: rgba(80, 65, 50, 0.18);
}

.hero-dot-fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0%;
  background: var(--gradient);
  border-radius: 4px;
  pointer-events: none;
  transition: width 0.1s linear;
}

.hero-carousel-dot.active .hero-dot-fill {
  box-shadow: 0 0 8px var(--accent-glow);
}

.hero-actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 36px;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--accent);
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 100px;
  margin-bottom: 32px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: #22d3ee;
  border-radius: 50%;
  box-shadow: 0 0 12px #22d3ee;
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(1.75rem, 3.5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero-title-main {
  display: block;
}

.hero-title-gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-company {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 20px;
  letter-spacing: 3px;
}

.hero-desc {
  font-size: clamp(0.9375rem, 1.6vw, 1.25rem);
  color: var(--text-muted);
  max-width: 100%;
  margin-bottom: 0;
  line-height: 1.85;
  font-weight: 300;
}

/* 首屏视觉 - 固定不动 */
.hero-visual-fixed {
  position: relative;
  z-index: 3;
}
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-width: 0;
  min-height: clamp(400px, 30vw, 540px);
}

.hero-device {
  position: relative;
  width: 100%;
  max-width: 100%;
}

.device-screen {
  position: relative;
  z-index: 2;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  box-shadow:
    var(--shadow-lg),
    0 0 0 1px rgba(59, 130, 246, 0.06),
    0 0 40px rgba(59, 130, 246, 0.08);
}

.device-screen::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(79, 143, 255, 0.03) 50%,
    transparent 100%
  );
  background-size: 100% 200%;
  animation: scanLine 4s ease-in-out infinite;
  pointer-events: none;
  z-index: 3;
}

@keyframes scanLine {
  0% { background-position: 0 -100%; }
  100% { background-position: 0 200%; }
}

.device-header {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.device-header span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #d4ccc0;
}

.device-header span:first-child { background: #ff5f57; }
.device-header span:nth-child(2) { background: #febc2e; }
.device-header span:nth-child(3) { background: #28c840; }

.device-code {
  position: relative;
  min-height: clamp(360px, 28vw, 500px);
}

.code-editor-body {
  display: flex;
  gap: 0;
  padding: 24px 0 16px;
  min-height: 260px;
}

.code-line-nums {
  flex-shrink: 0;
  width: 48px;
  padding: 0 12px 0 16px;
  text-align: right;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.875rem;
  line-height: 2;
  color: #94a3b8;
  user-select: none;
}

.code-line-nums span {
  display: block;
  transition: color 0.2s;
}

.code-line-nums span.active {
  color: var(--accent-light);
}

.code-output {
  flex: 1;
  margin: 0;
  padding: 0 24px 0 0;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: clamp(0.9375rem, 1.2vw, 1.25rem);
  line-height: 2;
  white-space: pre;
  overflow: hidden;
  color: var(--text-primary);
  transition: opacity 0.18s ease;
}

.code-cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--accent-light);
  margin-left: 1px;
  vertical-align: text-bottom;
  animation: cursorBlink 1s step-end infinite;
  box-shadow: 0 0 8px var(--accent-light);
}

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

.device-terminal-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.75rem;
}

.terminal-status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  transition: color 0.3s;
}

.terminal-status.is-typing { color: #fbbf24; }
.terminal-status.is-success { color: #34d399; }
.terminal-status.is-building { color: var(--accent-light); }

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}

.terminal-status.is-typing .status-dot {
  animation: statusPulse 1s ease-in-out infinite;
}

@keyframes statusPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.terminal-file {
  color: var(--text-muted);
}

.c-purple { color: #a626a4; }
.c-blue { color: #4078f2; }
.c-green { color: #50a14f; }
.c-orange { color: #c18401; }
.c-gray { color: #a0a1a7; }

.device-glow {
  position: absolute;
  inset: -20%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 60%);
  z-index: 0;
}

.hero-chip {
  position: absolute;
  padding: 10px 18px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  box-shadow: var(--shadow-sm);
  animation: chipFloat 5s ease-in-out infinite;
}

.hero-chip-1 { top: 10%; right: 0; animation-delay: 0s; }
.hero-chip-2 { bottom: 30%; left: -10px; animation-delay: -1.5s; }
.hero-chip-3 { bottom: 8%; right: 10%; animation-delay: -3s; }

@keyframes chipFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* 数据统计条 */
.hero-stats-bar {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--border);
  background: rgba(255, 252, 247, 0.7);
  backdrop-filter: blur(16px);
}

.hero-stats-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 40px 40px;
}

.stat {
  flex: 1;
  text-align: center;
}

.stat-num {
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-suffix {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 900;
  color: var(--accent-light);
}

.stat-label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 10px;
  letter-spacing: 2px;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
  flex-shrink: 0;
}

/* 滚动条 */
.marquee-wrap {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  padding: 32px 0 88px;
}

.marquee-fade {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}

.marquee-fade-left {
  left: 0;
  background: linear-gradient(90deg, var(--bg-secondary) 0%, transparent 100%);
}

.marquee-fade-right {
  right: 0;
  background: linear-gradient(270deg, var(--bg-secondary) 0%, transparent 100%);
}

.marquee-spotlight {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(680px, 58vw);
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.06) 0%, transparent 72%);
  pointer-events: none;
  z-index: 1;
}

.marquee {
  display: flex;
  align-items: center;
  gap: 48px;
  white-space: nowrap;
  animation: marquee 30s linear infinite;
  width: max-content;
  will-change: transform;
}

.marquee-item {
  font-size: clamp(1.125rem, 2.5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: 2px;
  color: rgba(46, 39, 31, 0.28);
  opacity: 0.5;
  transform: scale(1);
  transition: color 0.15s ease, opacity 0.15s ease, transform 0.15s ease, text-shadow 0.15s ease;
  will-change: opacity, transform;
  cursor: pointer;
  position: relative;
  z-index: 3;
}

.marquee-item.is-focus {
  color: var(--accent);
  opacity: 1;
  transform: scale(1.06);
  text-shadow: 0 0 24px rgba(59, 130, 246, 0.2);
}

.marquee-dot {
  font-size: 0.625rem !important;
  color: rgba(79, 143, 255, 0.2) !important;
  transition: color 0.15s ease, opacity 0.15s ease;
}

.marquee-dot.is-focus {
  color: var(--accent-light) !important;
  opacity: 1;
  text-shadow: 0 0 12px var(--accent-glow);
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.marquee-wrap:hover .marquee {
  animation-play-state: paused;
}

.marquee-item.is-hover {
  color: var(--accent) !important;
  opacity: 1 !important;
  transform: scale(1.08) !important;
  text-shadow: 0 0 28px rgba(59, 130, 246, 0.25) !important;
}

.marquee-detail {
  position: absolute;
  z-index: 5;
  left: 0;
  top: 0;
  transform: translateX(-50%);
  min-width: 220px;
  max-width: min(380px, calc(100vw - 32px));
  padding: 14px 18px 16px;
  background: var(--bg-card);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.marquee-detail.is-visible {
  opacity: 1;
}

.marquee-detail-arrow {
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 12px;
  height: 12px;
  background: var(--bg-card);
  border-top: 1px solid rgba(59, 130, 246, 0.2);
  border-left: 1px solid rgba(59, 130, 246, 0.2);
}

.marquee-detail-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-light);
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.marquee-detail-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
}

.marquee-detail-list li {
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--text-secondary);
  background: rgba(79, 143, 255, 0.1);
  border: 1px solid rgba(79, 143, 255, 0.15);
  border-radius: 999px;
  padding: 4px 10px;
  white-space: nowrap;
}

/* ===== 通用区块 ===== */
.section {
  padding: 140px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 80px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--accent-light);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 900;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  font-weight: 300;
}

/* ===== 服务 ===== */
.services {
  background: var(--bg-secondary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  align-items: stretch;
}

.service-card {
  padding: 0 32px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  z-index: 1;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition:
    transform 0.45s cubic-bezier(0.34, 1.45, 0.64, 1),
    box-shadow 0.45s ease,
    border-color 0.3s ease,
    background 0.3s ease,
    opacity 0.35s ease;
}

.service-projects {
  height: 38px;
  overflow: hidden;
  margin: 0 -32px 28px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.service-projects-track {
  display: flex;
  flex-direction: column;
  will-change: transform;
}

.service-project-item {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 38px;
  padding: 0 14px;
  flex-shrink: 0;
  min-width: 0;
}

.service-project-status {
  flex-shrink: 0;
  padding: 3px 8px;
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1.2;
  border-radius: 100px;
  letter-spacing: 0.02em;
}

.service-project-status.is-negotiating {
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.15);
  border: 1px solid rgba(251, 191, 36, 0.35);
}

.service-project-status.is-signing {
  color: #7eb3ff;
  background: rgba(79, 143, 255, 0.15);
  border: 1px solid rgba(79, 143, 255, 0.35);
}

.service-project-status.is-developing {
  color: #34d399;
  background: rgba(52, 211, 153, 0.15);
  border: 1px solid rgba(52, 211, 153, 0.35);
}

.service-project-status.is-testing {
  color: #c4b5fd;
  background: rgba(167, 139, 250, 0.15);
  border: 1px solid rgba(167, 139, 250, 0.35);
}

.service-project-status.is-delivered {
  color: #94a0b4;
  background: rgba(148, 160, 180, 0.12);
  border: 1px solid rgba(148, 160, 180, 0.28);
}

.service-project-name {
  font-size: 1.15rem;
  line-height: 1.4;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.35s ease;
}

.service-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  padding: 1px;
  background: linear-gradient(135deg, rgba(79, 143, 255, 0.8), rgba(167, 139, 250, 0.8), rgba(34, 211, 238, 0.8));
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.services-grid:hover .service-card:not(:hover) {
  transform: scale(0.97);
  opacity: 0.55;
}

.service-card:hover {
  background: var(--bg-card);
  border-color: transparent;
  transform: scale(1.08) translateY(-14px);
  z-index: 10;
  box-shadow:
    var(--shadow-lg),
    0 0 0 1px rgba(59, 130, 246, 0.12),
    0 0 32px rgba(59, 130, 246, 0.12);
}

.service-card:hover::before,
.service-card:hover::after {
  opacity: 1;
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(79, 143, 255, 0.1);
  border-radius: 14px;
  margin-bottom: 28px;
  color: var(--accent-light);
  transition:
    transform 0.45s cubic-bezier(0.34, 1.45, 0.64, 1),
    background 0.3s ease,
    box-shadow 0.3s ease;
}

.service-card:hover .service-icon {
  transform: scale(1.15);
  background: rgba(79, 143, 255, 0.2);
  box-shadow: 0 0 28px rgba(79, 143, 255, 0.35);
}

.service-icon svg {
  width: 28px;
  height: 28px;
  transition: transform 0.45s cubic-bezier(0.34, 1.45, 0.64, 1);
}

.service-card:hover .service-icon svg {
  transform: scale(1.1);
}

.service-card h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 16px;
  transition: font-size 0.35s ease, color 0.3s ease;
}

.service-card:hover h3 {
  font-size: 1.625rem;
  color: var(--accent);
}

.service-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.8;
  font-weight: 300;
  transition: font-size 0.35s ease, color 0.3s ease, line-height 0.35s ease;
}

.service-card:hover p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.85;
}

@media (hover: none) {
  .services-grid:hover .service-card:not(:hover) {
    transform: none;
    opacity: 1;
  }

  .service-card:active {
    transform: scale(1.04) translateY(-8px);
    z-index: 10;
  }
}

/* ===== 案例展示 ===== */
.cases {
  background: var(--bg-primary);
}

.cases-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 56px;
}

.cases-filter-btn {
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  cursor: pointer;
  transition: var(--transition);
}

.cases-filter-btn:hover {
  color: var(--text-primary);
  border-color: rgba(79, 143, 255, 0.3);
  background: rgba(79, 143, 255, 0.06);
}

.cases-filter-btn.active {
  color: #fff;
  background: var(--gradient);
  border-color: transparent;
  box-shadow: 0 4px 24px var(--accent-glow);
}

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

.case-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}

.case-card:hover {
  border-color: rgba(59, 130, 246, 0.25);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.case-card.is-hidden {
  display: none;
}

.case-thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--bg-primary);
}

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

.case-thumb-img:not([src]),
.case-thumb-img[src=""] {
  display: none;
}

.case-thumb-1 { background: linear-gradient(135deg, #ede4d4 0%, #e0d4c0 100%); }
.case-thumb-2 { background: linear-gradient(135deg, #e8e0f0 0%, #ddd0e8 100%); }
.case-thumb-3 { background: linear-gradient(135deg, #dde8d8 0%, #c8dcc8 100%); }
.case-thumb-4 { background: linear-gradient(135deg, #f5e6d8 0%, #edd4bc 100%); }
.case-thumb-5 { background: linear-gradient(135deg, #f0e0e4 0%, #e8ccd4 100%); }
.case-thumb-6 { background: linear-gradient(135deg, #dce8f0 0%, #c8dae8 100%); }

.case-card:hover .case-thumb-img {
  transform: scale(1.06);
}

.case-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(3, 5, 8, 0.65);
  opacity: 0;
  transition: var(--transition);
}

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

.case-overlay-text {
  padding: 10px 24px;
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 100px;
  backdrop-filter: blur(8px);
}

/* Mock UI 组件 */
.case-mock {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.case-mock-phone {
  width: 120px;
  height: 200px;
  background: rgba(0, 0, 0, 0.4);
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  padding: 8px;
}

.mock-screen {
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 14px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-bar {
  height: 8px;
  width: 60%;
  background: rgba(79, 143, 255, 0.5);
  border-radius: 4px;
}

.mock-block {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
}

.mock-block-lg { height: 50px; }
.mock-block-sm { flex: 1; height: 36px; }

.mock-row {
  display: flex;
  gap: 6px;
}

.case-mock-game {
  flex-direction: column;
  gap: 16px;
}

.mock-game-ui {
  text-align: center;
}

.mock-score {
  font-family: 'Consolas', monospace;
  font-size: 0.8125rem;
  color: #fbbf24;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.mock-grid-game {
  display: grid;
  grid-template-columns: repeat(4, 28px);
  gap: 6px;
}

.mock-grid-game span {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: rgba(167, 139, 250, 0.4);
  animation: gamePulse 2s ease-in-out infinite;
}

.mock-grid-game span:nth-child(odd) {
  background: rgba(79, 143, 255, 0.4);
  animation-delay: -0.5s;
}

@keyframes gamePulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.case-mock-dashboard {
  width: 90%;
  height: 80%;
  display: flex;
  gap: 8px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 10px;
  padding: 10px;
}

.mock-sidebar {
  width: 30%;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 6px;
}

.mock-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-chart {
  height: 45%;
  background: linear-gradient(180deg, rgba(52, 211, 153, 0.3) 0%, transparent 100%);
  border-radius: 6px;
  border-bottom: 2px solid #34d399;
}

.mock-table { flex: 1; display: flex; flex-direction: column; gap: 4px; }
.mock-table-row { height: 8px; background: rgba(255, 255, 255, 0.06); border-radius: 3px; }
.mock-table-row:first-child { width: 80%; }

.case-mock-app {
  width: 110px;
  height: 190px;
  background: rgba(0, 0, 0, 0.4);
  border-radius: 18px;
  border: 2px solid rgba(255, 255, 255, 0.12);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-app-header { height: 24px; background: rgba(251, 146, 60, 0.3); border-radius: 6px; }
.mock-app-cards { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.mock-app-card { flex: 1; background: rgba(255, 255, 255, 0.08); border-radius: 6px; }
.mock-app-nav { height: 16px; background: rgba(255, 255, 255, 0.06); border-radius: 8px; }

.case-mock-shop {
  width: 100px;
  height: 180px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-shop-banner {
  height: 50px;
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.5), rgba(167, 139, 250, 0.5));
  border-radius: 8px;
}

.mock-shop-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  flex: 1;
}

.mock-shop-item {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
}

.case-mock-runner {
  width: 100%;
  height: 100%;
  position: relative;
}

.mock-runner-bg {
  position: absolute;
  bottom: 30%;
  left: 0;
  right: 0;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
}

.mock-runner-char {
  position: absolute;
  bottom: 32%;
  left: 30%;
  width: 24px;
  height: 24px;
  background: #60a5fa;
  border-radius: 6px;
  animation: runnerMove 2s ease-in-out infinite;
}

@keyframes runnerMove {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.mock-runner-score {
  position: absolute;
  top: 20%;
  right: 20%;
  font-family: 'Consolas', monospace;
  font-size: 0.75rem;
  color: #22d3ee;
}

.case-reviews {
  height: 38px;
  overflow: hidden;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.case-reviews-track {
  display: flex;
  flex-direction: column;
  will-change: transform;
}

.case-review-item {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 38px;
  padding: 0 14px;
  flex-shrink: 0;
}

.case-review-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
}

.case-review-text {
  font-size: 1.125rem;
  line-height: 1.4;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

.case-body {
  padding: 20px;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.case-tag {
  padding: 3px 10px;
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--accent-light);
  background: rgba(79, 143, 255, 0.1);
  border-radius: 100px;
}

.case-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.case-leaders {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.case-leader {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.case-leader-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.case-leader-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.case-leader-name.is-empty {
  color: var(--text-muted);
  font-weight: 400;
}

.cases-cta {
  text-align: center;
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

.cases-cta p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ===== 关于 ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-card {
  position: relative;
  padding: 2px;
  background: var(--gradient);
  border-radius: var(--radius);
}

.about-card-inner {
  background: var(--bg-secondary);
  border-radius: calc(var(--radius) - 2px);
  padding: 40px;
}

.code-block {
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 1rem;
  line-height: 2;
}

.code-line {
  display: block;
}

.code-keyword {
  color: #a626a4;
}

.code-string {
  color: #50a14f;
}

.about-content .section-tag,
.about-content .section-title {
  text-align: left;
}

.about-text {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 2;
  font-size: 1.0625rem;
  font-weight: 300;
}

.about-features {
  margin-top: 40px;
}

.about-features li {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  color: var(--text-secondary);
  font-size: 1rem;
}

.feature-dot {
  width: 10px;
  height: 10px;
  background: var(--gradient);
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ===== 核心团队 ===== */
.team {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.team::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(79, 143, 255, 0.06) 0%, transparent 65%);
  pointer-events: none;
}

.team-tabs {
  margin-bottom: 64px;
}

.team-tab-nav {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.team-tab-nav::-webkit-scrollbar {
  display: none;
}

.team-tab-btn {
  padding: 12px 24px;
  font-size: 0.9375rem;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.team-tab-btn:hover {
  color: var(--text-primary);
  border-color: rgba(79, 143, 255, 0.3);
  background: rgba(79, 143, 255, 0.06);
}

.team-tab-btn.active {
  color: #fff;
  background: var(--gradient);
  border-color: transparent;
  box-shadow: 0 4px 24px var(--accent-glow);
}

.team-tab-panel {
  display: none;
  animation: tabFadeIn 0.4s ease;
}

.team-tab-panel.active {
  display: block;
}

@keyframes tabFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.team-scroll-wrap {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
}

.team-scroll {
  display: flex;
  align-items: stretch;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 8px 4px 24px;
  flex: 1;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(79, 143, 255, 0.3) transparent;
  cursor: grab;
}

.team-scroll.is-dragging {
  cursor: grabbing;
  scroll-behavior: auto;
  scroll-snap-type: none;
  user-select: none;
}

.team-scroll.is-dragging .member-card {
  pointer-events: none;
}

.team-scroll::-webkit-scrollbar {
  height: 6px;
}

.team-scroll::-webkit-scrollbar-thumb {
  background: rgba(79, 143, 255, 0.3);
  border-radius: 3px;
}

.team-scroll-btn {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
}

.team-scroll-btn:hover {
  color: var(--accent-light);
  border-color: rgba(79, 143, 255, 0.4);
  background: rgba(79, 143, 255, 0.1);
  box-shadow: 0 0 16px var(--accent-glow);
}

.member-card {
  flex: 0 0 min(340px, 85vw);
  scroll-snap-align: start;
  padding: 28px 28px 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition:
    transform 0.4s cubic-bezier(0.34, 1.45, 0.64, 1),
    box-shadow 0.4s ease,
    border-color 0.3s ease;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.member-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.member-card-biz::before {
  background: linear-gradient(90deg, #4f8fff, #60a5fa);
}

.member-card-tech::before {
  background: linear-gradient(90deg, #a78bfa, #22d3ee);
}

.member-card-design::before {
  background: linear-gradient(90deg, #f472b6, #fb923c);
}

.member-card-plan::before {
  background: linear-gradient(90deg, #34d399, #10b981);
}

.member-card-ops::before {
  background: linear-gradient(90deg, #fbbf24, #f97316);
}

.member-card:hover {
  transform: translateY(-6px) scale(1.02);
  border-color: rgba(59, 130, 246, 0.25);
  box-shadow: var(--shadow-lg);
}

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

.member-top {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.member-avatar {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 1.625rem;
  font-weight: 900;
  color: #fff;
  overflow: hidden;
}

.member-avatar.has-image,
.member-card-biz .member-avatar.has-image,
.member-card-tech .member-avatar.has-image,
.member-card-design .member-avatar.has-image,
.member-card-plan .member-avatar.has-image,
.member-card-ops .member-avatar.has-image {
  background: transparent !important;
  box-shadow: none !important;
}

.member-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}

.member-card-biz .member-avatar:not(.has-image) {
  background: var(--gradient);
  box-shadow: 0 0 20px var(--accent-glow);
}

.member-card-tech .member-avatar:not(.has-image) {
  background: linear-gradient(135deg, #a78bfa, #22d3ee);
  box-shadow: 0 0 20px rgba(167, 139, 250, 0.35);
}

.member-card-design .member-avatar:not(.has-image) {
  background: linear-gradient(135deg, #f472b6, #fb923c);
  box-shadow: 0 0 20px rgba(244, 114, 182, 0.35);
}

.member-card-plan .member-avatar:not(.has-image) {
  background: linear-gradient(135deg, #34d399, #10b981);
  box-shadow: 0 0 20px rgba(52, 211, 153, 0.35);
}

.member-card-ops .member-avatar:not(.has-image) {
  background: linear-gradient(135deg, #fbbf24, #f97316);
  box-shadow: 0 0 20px rgba(251, 191, 36, 0.35);
}

.member-meta {
  flex: 1;
  min-width: 0;
}

.member-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.member-role {
  font-size: 0.8125rem;
  color: var(--accent-light);
  margin-bottom: 6px;
}

.member-card-tech .member-role { color: #c4b5fd; }
.member-card-design .member-role { color: #f9a8d4; }
.member-card-plan .member-role { color: #6ee7b7; }
.member-card-ops .member-role { color: #fcd34d; }

.member-exp {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.6875rem;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 100px;
}

.member-bio {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.85;
  font-weight: 300;
  margin-bottom: 20px;
  min-height: calc(0.875rem * 1.85 * 3);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  overflow: hidden;
}

.member-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 32px;
  margin-bottom: 4px;
}

.member-tags span {
  padding: 5px 12px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: var(--transition);
}

.member-card:hover .member-tags span {
  border-color: rgba(79, 143, 255, 0.2);
}

.member-projects {
  height: 38px;
  overflow: hidden;
  margin: auto -28px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.member-projects-track {
  display: flex;
  flex-direction: column;
  will-change: transform;
}

.member-project-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 38px;
  padding: 0 14px;
  flex-shrink: 0;
  min-width: 0;
}

.member-project-name {
  font-size: 1.25rem;
  line-height: 1.4;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

.member-project-progress {
  flex-shrink: 0;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.member-project-progress.is-high {
  color: #34d399;
}

.member-project-progress.is-mid {
  color: #7eb3ff;
}

.member-project-progress.is-low {
  color: #fbbf24;
}

.team-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

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

.team-stat:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 40px;
  background: var(--border);
}

.team-stat-num {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.team-stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* ===== 技术栈 ===== */
.tech {
  background: var(--bg-secondary);
}

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

.tech-item {
  position: relative;
  padding: 28px 24px;
  text-align: center;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: var(--transition);
  isolation: isolate;
}

.tech-item::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 45%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(79, 143, 255, 0.3) 25%,
    var(--accent) 50%,
    #22d3ee 75%,
    transparent 100%
  );
  box-shadow:
    0 0 10px var(--accent-glow),
    0 0 20px rgba(34, 211, 238, 0.25);
  opacity: 0;
  pointer-events: none;
  z-index: 1;
  animation: techTopRun 8s ease-in-out infinite;
}

.tech-item:nth-child(1)::before { animation-delay: 0s; }
.tech-item:nth-child(2)::before { animation-delay: 1s; }
.tech-item:nth-child(3)::before { animation-delay: 2s; }
.tech-item:nth-child(4)::before { animation-delay: 3s; }
.tech-item:nth-child(5)::before { animation-delay: 4s; }
.tech-item:nth-child(6)::before { animation-delay: 5s; }
.tech-item:nth-child(7)::before { animation-delay: 6s; }
.tech-item:nth-child(8)::before { animation-delay: 7s; }

@keyframes techTopRun {
  0%, 100% {
    transform: translateX(-120%);
    opacity: 0;
  }
  1.5% {
    opacity: 1;
  }
  10.5% {
    transform: translateX(240%);
    opacity: 1;
  }
  12.5%, 99.9% {
    transform: translateX(240%);
    opacity: 0;
  }
}

.tech-item:hover {
  color: var(--accent-light);
  border-color: rgba(79, 143, 255, 0.3);
  background: rgba(79, 143, 255, 0.06);
  transform: translateY(-3px);
}

/* ===== 流程 ===== */
.process-timeline {
  padding: 20px 0 40px;
}

.process-track {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 4px;
  padding: 0 20px 170px;
}

.process-line {
  position: absolute;
  top: 28px;
  left: 48px;
  right: 48px;
  height: 8px;
  background: rgba(79, 143, 255, 0.12);
  border-radius: 2px;
  z-index: 0;
  overflow: hidden;
}

.process-line::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(79, 143, 255, 0.3) 0%,
    rgba(167, 139, 250, 0.6) 50%,
    rgba(34, 211, 238, 0.3) 100%
  );
}

.process-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -30%;
  width: 30%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
  animation: processLineShine 3s ease-in-out infinite;
}

@keyframes processLineShine {
  0% { left: -30%; }
  100% { left: 100%; }
}

.process-node {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 1;
  cursor: pointer;
  min-width: 0;
  transition: opacity 0.3s ease;
}

.process-track:hover .process-node:not(:hover):not(.is-active) {
  opacity: 0.55;
}

.process-dot {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid rgba(79, 143, 255, 0.3);
  transition: all 0.35s cubic-bezier(0.34, 1.45, 0.64, 1);
  position: relative;
  z-index: 2;
  box-shadow: 0 0 0 4px var(--bg-secondary);
}

.process-dot span {
  font-size: 1rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: var(--transition);
}

.process-dot::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid transparent;
  transition: var(--transition);
}

.process-title {
  margin-top: 20px;
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  color: var(--text-secondary);
  transition: var(--transition);
  white-space: nowrap;
}

.process-detail {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: max(200px, 14vw);
  max-width: 220px;
  padding: 16px 18px;
  background: var(--bg-card);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
  pointer-events: none;
  z-index: 10;
}

.process-detail::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 10px;
  height: 10px;
  background: var(--bg-card);
  border-left: 1px solid rgba(59, 130, 246, 0.2);
  border-top: 1px solid rgba(59, 130, 246, 0.2);
}

.process-detail p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.85;
  font-weight: 300;
  text-align: center;
}

.process-node:hover .process-dot,
.process-node.is-active .process-dot {
  background: var(--gradient);
  border-color: transparent;
  box-shadow: 0 0 32px var(--accent-glow);
  transform: scale(1.12);
}

.process-node:hover .process-dot span,
.process-node.is-active .process-dot span {
  -webkit-text-fill-color: #fff;
  background: none;
  color: #fff;
}

.process-node:hover .process-dot::before,
.process-node.is-active .process-dot::before {
  border-color: rgba(79, 143, 255, 0.3);
}

.process-node:hover .process-title,
.process-node.is-active .process-title {
  color: var(--accent);
  transform: translateY(2px);
}

.process-node:hover .process-detail,
.process-node.is-active .process-detail,
.process-node:focus-within .process-detail {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.process-node:first-child .process-detail {
  left: 0;
  transform: translateX(0) translateY(8px);
}

.process-node:first-child:hover .process-detail,
.process-node:first-child.is-active .process-detail {
  transform: translateX(0) translateY(0);
}

.process-node:last-child .process-detail {
  left: auto;
  right: 0;
  transform: translateX(0) translateY(8px);
}

.process-node:last-child:hover .process-detail,
.process-node:last-child.is-active .process-detail {
  transform: translateX(0) translateY(0);
}

.process-node:first-child .process-detail::before,
.process-node:last-child .process-detail::before {
  left: 28px;
  transform: rotate(45deg);
}

.process-node:last-child .process-detail::before {
  left: auto;
  right: 28px;
}

/* ===== 联系 ===== */
.contact {
  background: var(--bg-secondary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-info .section-tag,
.contact-info .section-title {
  text-align: left;
}

.contact-desc {
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 2;
  font-size: 1.0625rem;
  font-weight: 300;
}

.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

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

.contact-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(79, 143, 255, 0.1);
  border-radius: 14px;
  color: var(--accent-light);
  flex-shrink: 0;
}

.contact-icon svg {
  width: 22px;
  height: 22px;
}

.contact-list strong {
  display: block;
  font-size: 0.9375rem;
  margin-bottom: 6px;
}

.contact-list span {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.contact-form {
  padding: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(79, 143, 255, 0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  color-scheme: light;
  background-color: var(--bg-card);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b5f52' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 18px center;
}

.form-group select option {
  background-color: var(--bg-card);
  color: var(--text-primary);
  padding: 8px;
}

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

/* ===== 页脚 ===== */
.footer {
  padding: 60px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 12px;
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent-light);
}

.footer-bottom {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-icp {
  margin-top: 8px;
}

.footer-icp a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-icp a:hover {
  color: var(--accent-light);
}

/* ===== 动画 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 弹窗 ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(46, 39, 31, 0.35);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  position: relative;
  width: 100%;
  max-width: 420px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 36px 32px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  transform: translateY(20px) scale(0.98);
  transition: transform 0.3s ease;
}

.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}

.modal-lg {
  max-width: 520px;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}

.modal-close:hover {
  color: var(--text-primary);
  background: rgba(59, 130, 246, 0.08);
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.modal-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.modal-form .form-group {
  margin-bottom: 18px;
}

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

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 8px;
  line-height: 1.5;
}

.form-hint.is-review {
  color: #fbbf24;
}

.form-error {
  font-size: 0.8125rem;
  color: #f87171;
  margin-bottom: 16px;
  padding: 10px 14px;
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.25);
  border-radius: 8px;
}

.form-error.hidden,
.form-success.hidden {
  display: none;
}

.form-success {
  font-size: 0.8125rem;
  color: #34d399;
  margin-bottom: 16px;
  padding: 10px 14px;
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.25);
  border-radius: 8px;
}

.modal-switch {
  text-align: center;
  margin-top: 24px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.link-btn {
  padding: 0;
  font-size: inherit;
  font-family: inherit;
  color: var(--accent-light);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.link-btn:hover {
  color: var(--accent);
}

body.modal-open {
  overflow: hidden;
}

.hidden {
  display: none !important;
}

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
  .nav-right {
    gap: 12px;
  }

  .logo-text {
    font-size: 1rem;
  }

  .logo-slogan {
    font-size: 0.75rem;
    gap: 5px;
  }

  .logo-slogan::before {
    width: 5px;
    height: 5px;
  }

  .nav-link {
    padding: 8px 14px;
    font-size: 1rem;
  }

  .btn-nav-auth {
    padding: 8px 14px;
    font-size: 0.9375rem;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }

  .hero-content {
    text-align: center;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
    margin-top: 28px;
  }

  .hero-carousel-controls {
    justify-content: center;
    margin-top: 28px;
  }

  .hero-visual {
    min-height: 460px;
  }

  .hero-chip-2 {
    left: 5%;
  }
}

@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .team-tab-nav {
    gap: 8px;
  }

  .team-tab-btn {
    padding: 10px 18px;
    font-size: 0.875rem;
  }

  .team-scroll-btn {
    display: none;
  }

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

  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-timeline {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    margin: 0 -24px;
    padding: 0 24px;
  }

  .process-track {
    min-width: 880px;
  }

  .hero-stats-inner {
    flex-wrap: wrap;
    gap: 32px;
  }

  .stat-divider {
    display: none;
  }

  .stat {
    flex: 0 0 calc(50% - 16px);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 68px;
  }

  .container {
    padding: 0 24px;
  }

  .logo-slogan {
    display: none;
  }

  .logo-text {
    font-size: 0.9375rem;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-right {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(255, 252, 247, 0.98);
    backdrop-filter: blur(24px);
    padding: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }

  .nav-right.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-menu {
    position: static;
    flex-direction: column;
    transform: none;
    opacity: 1;
    visibility: visible;
    background: none;
    backdrop-filter: none;
    padding: 0;
    border: none;
    width: 100%;
  }

  .nav-auth,
  .nav-user {
    justify-content: center;
    padding-top: 16px;
    margin-top: 8px;
    border-top: 1px solid var(--border);
    width: 100%;
  }

  .nav-user-link {
    flex-direction: row;
  }

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

  .nav-link {
    display: block;
    width: 100%;
    padding: 16px 20px;
    text-align: center;
    font-size: 1rem;
  }

  .hero {
    padding-top: calc(var(--header-height) + 32px);
  }

  .hero-reviews-bar {
    padding: 10px 0;
  }

  .hero-reviews-inner {
    gap: 12px;
  }

  .hero-reviews-label {
    font-size: 0.75rem;
  }

  .hero-reviews-label::after {
    margin-left: 12px;
    height: 12px;
  }

  .hero-review-item {
    gap: 8px;
    padding: 6px 12px;
    max-width: 100%;
  }

  .hero-reviews-set {
    gap: 8px;
  }

  .hero-review-avatar {
    width: 24px;
    height: 24px;
  }

  .hero-review-text {
    max-width: 140px;
  }

  .hero-review-name,
  .hero-review-text {
    font-size: 0.75rem;
  }

  .hero-review-time {
    font-size: 0.6875rem;
  }

  .hero-slides {
    height: auto !important;
    min-height: 280px;
  }

  .hero-slide {
    position: relative;
    opacity: 0;
    visibility: hidden;
    height: 0;
    overflow: hidden;
    transform: none;
    transition: opacity 0.5s ease, visibility 0.5s;
  }

  .hero-slide.active {
    position: relative;
    opacity: 1;
    visibility: visible;
    height: auto;
    overflow: visible;
    transform: none;
  }

  .hero-slide.exit {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: auto;
    opacity: 0;
    transform: none;
  }

  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .hero-company {
    font-size: 0.875rem;
    letter-spacing: 1px;
    margin-bottom: 16px;
  }

  .hero-desc {
    font-size: 0.875rem;
    line-height: 1.75;
  }

  .hero-badge {
    margin-bottom: 24px;
    font-size: 0.75rem;
    padding: 8px 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    margin-top: 24px;
  }

  .hero-carousel-controls {
    margin-top: 24px;
    padding-top: 20px;
  }

  .hero-carousel-dot {
    width: 36px;
    height: 4px;
  }

  .hero-watermark {
    font-size: 5rem;
  }

  .hero-orbit {
    display: none;
  }

  .hero-device {
    max-width: 100%;
  }

  .device-code {
    min-height: 280px;
  }

  .code-output {
    font-size: 0.6875rem;
  }

  .code-line-nums {
    font-size: 0.6875rem;
    width: 36px;
    padding-left: 10px;
  }

  .hero-chip {
    display: none;
  }

  .hero-stats-inner {
    padding: 32px 24px;
  }

  .stat-num {
    font-size: 2rem;
  }

  .section {
    padding: 80px 0;
  }

  .section-header {
    margin-bottom: 48px;
  }

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

  .cases-filter {
    gap: 8px;
    margin-bottom: 40px;
  }

  .cases-filter-btn {
    padding: 10px 20px;
    font-size: 0.875rem;
  }

  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .case-body {
    padding: 14px;
  }

  .case-title {
    font-size: 0.875rem;
  }

  .case-leaders {
    gap: 6px;
    margin-top: 12px;
    padding-top: 12px;
  }

  .case-leader-label {
    font-size: 0.5625rem;
  }

  .case-leader-name {
    font-size: 0.6875rem;
  }

  .member-card {
    flex: 0 0 min(300px, 88vw);
  }

  .member-projects {
    margin-left: -28px;
    margin-right: -28px;
  }

  .member-bio {
    min-height: calc(0.875rem * 1.85 * 3);
  }

  .team-stats {
    grid-template-columns: repeat(2, 1fr);
    padding: 28px 20px;
    gap: 16px;
  }

  .team-stat:not(:last-child)::after {
    display: none;
  }

  .team-stat:nth-child(odd)::after {
    display: block;
  }

  .team-stat:nth-child(2)::after {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-content .section-tag,
  .about-content .section-title {
    text-align: center;
  }

  .about-text {
    text-align: center;
  }

  .about-features {
    max-width: 300px;
    margin: 40px auto 0;
  }

  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-track {
    min-width: 720px;
    padding-bottom: 180px;
  }

  .process-title {
    font-size: 0.8125rem;
    white-space: normal;
    max-width: 90px;
  }

  .process-dot {
    width: 48px;
    height: 48px;
  }

  .process-dot span {
    font-size: 0.8125rem;
  }

  .process-detail {
    width: 180px;
    max-width: 180px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .contact-info .section-tag,
  .contact-info .section-title {
    text-align: center;
  }

  .contact-desc {
    text-align: center;
  }

  .contact-form {
    padding: 28px;
  }

  .footer-main {
    flex-direction: column;
    gap: 32px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-lg {
    width: 100%;
  }

  .stat {
    flex: 0 0 100%;
  }

  .marquee-item {
    font-size: 1rem;
  }

  .marquee-wrap {
    padding-bottom: 96px;
  }

  .marquee-detail {
    min-width: 200px;
    padding: 12px 14px 14px;
  }

  .marquee-detail-list li {
    font-size: 0.6875rem;
    white-space: normal;
  }

  .marquee-fade {
    width: 48px;
  }

  .team-stats {
    grid-template-columns: 1fr;
  }

  .team-stat::after {
    display: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .logo-slogan {
    animation: none;
    background-position: 0% center;
  }

  .logo-slogan::before {
    animation: none;
  }

}