/* 宝熠科技 — 企业级视觉系统 */
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap");

:root {
  /* 对齐 https://tenxun.life/ 配色 */
  --bg-deep: #eef2f9;
  --bg-nav: rgba(255, 255, 255, 0.82);
  --ink: #0f172a;
  --ink-soft: #334155;
  --ink-muted: #64748b;
  --surface: #ffffff;
  --surface-muted: #eef2f9;
  --card: rgba(255, 255, 255, 0.78);
  --line: rgba(15, 23, 42, 0.1);
  --line-strong: rgba(15, 23, 42, 0.14);
  --accent: #2563eb;
  --accent-bright: #3b82f6;
  --accent-hover: #1d4ed8;
  --accent-muted: rgba(37, 99, 235, 0.12);
  --white: #ffffff;
  --radius: 12px;
  --font: "Noto Sans SC", system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 20px rgba(15, 23, 42, 0.06);
  --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  --gradient-title: linear-gradient(135deg, #0f172a 0%, #1e40af 45%, #2563eb 100%);
  --gradient-btn: linear-gradient(135deg, #2563eb, #1d4ed8);
  --gradient-flow: var(--gradient-btn);
}

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

@keyframes orbDrift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 15px) scale(0.95); }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  color: var(--ink-soft);
  background: var(--bg-deep);
  line-height: 1.75;
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.01em;
  position: relative;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  position: relative;
  z-index: 2;
  flex: 1;
}

/* —— 背景氛围（参考 tenxun.life） —— */
.bg-blobs {
  position: fixed;
  inset: -10%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.bg-blobs::before,
.bg-blobs::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
}

.bg-blobs::before {
  width: min(85vw, 520px);
  height: min(85vw, 520px);
  left: -5%;
  top: 8%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.22), transparent 68%);
  animation: bg-blob-a 14s ease-in-out infinite alternate;
}

.bg-blobs::after {
  width: min(95vw, 640px);
  height: min(95vw, 640px);
  right: -8%;
  bottom: 5%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.18), transparent 70%);
  animation: bg-blob-b 18s ease-in-out infinite alternate;
}

@keyframes bg-blob-a {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(14%, 18%) scale(1.12); }
}

@keyframes bg-blob-b {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-16%, -12%) scale(1.1); }
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  background-color: var(--bg-deep);
  background-image:
    radial-gradient(rgba(37, 99, 235, 0.07) 1px, transparent 1px),
    linear-gradient(rgba(37, 99, 235, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.045) 1px, transparent 1px);
  background-size: 32px 32px, 48px 48px, 48px 48px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 90% 75% at 50% 18%, black 20%, transparent 72%);
  animation: bg-grid-drift 22s ease-in-out infinite alternate;
}

@keyframes bg-grid-drift {
  0% {
    transform: translate3d(0, 0, 0);
    background-position: 0 0, 0 0, 0 0;
  }
  100% {
    transform: translate3d(-22px, 16px, 0);
    background-position: 40px 40px, 96px 96px, 96px 96px;
  }
}

.bg-glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(
    ellipse 75% 48% at 50% 12%,
    rgba(255, 255, 255, 0.95) 0%,
    rgba(219, 234, 254, 0.45) 38%,
    transparent 68%
  );
  animation: bg-glow-breathe 10s ease-in-out infinite alternate;
}

@keyframes bg-glow-breathe {
  0% { opacity: 0.85; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.06); }
}

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

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

.container {
  width: min(1200px, 90vw);
  margin: 0 auto;
}

/* —— 导航 —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset, 0 4px 20px rgba(15, 23, 42, 0.04);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 500;
  font-size: 1rem;
  color: var(--ink);
  letter-spacing: 0.06em;
}

.logo-img {
  display: block;
  height: 40px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  white-space: nowrap;
  font-weight: 500;
}

.logo-footer .logo-text {
  color: var(--ink);
}

.logo-footer {
  margin-bottom: 20px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  padding: 10px 14px;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 6px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav-links a:hover {
  color: var(--accent-bright);
}

.nav-links a.active {
  color: var(--ink);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

.nav-phone {
  margin-left: 12px;
  padding: 9px 18px !important;
  border: 1px solid var(--line-strong) !important;
  color: var(--ink) !important;
  font-weight: 500 !important;
  letter-spacing: 0.06em !important;
  font-size: 0.8125rem !important;
  transition: border-color var(--transition), color var(--transition) !important;
}

.nav-phone::after {
  display: none !important;
}

.nav-phone:hover {
  border-color: var(--accent) !important;
  color: var(--accent) !important;
}

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

.nav-toggle span {
  width: 22px;
  height: 1px;
  background: var(--ink);
}

/* —— Hero / 子页顶栏（浅色 + 渐变标题，同 tenxun.life） —— */
.hero,
.page-hero {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--ink);
}

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

.hero-content {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 3.5rem 0 2.5rem;
  animation: fadeInUp 1s ease both;
}

.page-hero {
  padding: 2.75rem 0 2rem;
  border-bottom: 1px solid var(--line);
}

.page-hero .container {
  animation: fadeInUp 0.8s ease both;
}

.hero-tag,
.page-hero .part-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 1rem;
  padding-left: 0;
  border-left: none;
}

.hero h1,
.page-hero h1 {
  font-size: clamp(2rem, 5.5vw, 2.85rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
  background: var(--gradient-title);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 1rem;
}

.hero p,
.page-hero .subtitle {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.75;
  color: var(--ink-muted);
  margin: 0 auto 2rem;
  max-width: 36rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  border: 1px solid transparent;
  cursor: pointer;
}

.btn:hover {
  transform: none;
}

.btn-primary {
  background: var(--gradient-btn);
  color: var(--white);
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
  letter-spacing: 0.04em;
  text-transform: none;
  border-radius: 10px;
  padding: 0.75rem 1.35rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.btn-primary:hover {
  filter: brightness(1.06);
  color: var(--white);
}

.btn-outline {
  background: var(--white);
  color: var(--ink);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  letter-spacing: 0.04em;
  text-transform: none;
  border-radius: 10px;
  padding: 0.75rem 1.35rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.btn-outline:hover {
  border-color: rgba(37, 99, 235, 0.35);
  color: var(--accent-bright);
}

.btn-accent {
  background: var(--gradient-btn);
  color: var(--white);
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
  letter-spacing: 0.04em;
  text-transform: none;
  border-radius: 10px;
}

.btn-accent:hover {
  filter: brightness(1.06);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-block {
  width: 100%;
}

/* —— 区块 —— */
section {
  padding: 96px 0;
}

.section-header {
  margin-bottom: 56px;
}

.section-header--center {
  text-align: center;
}

.section-header--center p {
  margin-left: auto;
  margin-right: auto;
}

.section-header .part-label {
  display: block;
  color: var(--accent);
  font-weight: 500;
  font-size: 0.6875rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.section-header p {
  color: var(--ink-muted);
  max-width: 520px;
  font-size: 0.9375rem;
  font-weight: 300;
  line-height: 1.85;
}

/* —— 业务卡片 —— */
.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.business-card {
  background: var(--card);
  backdrop-filter: blur(8px);
  padding: 48px 36px 40px;
  transition: background var(--transition), box-shadow var(--transition);
  position: relative;
}

.business-card:hover {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-md);
}

.business-card .card-index {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--ink-muted);
  margin-bottom: 24px;
}

.business-card h3 {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: 16px;
  color: var(--ink);
  letter-spacing: 0.08em;
}

.business-card p {
  color: var(--ink-muted);
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.85;
  margin-bottom: 28px;
}

.business-card .card-link {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.business-card .card-link::after {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
  transition: width var(--transition);
}

.business-card:hover .card-link::after {
  width: 36px;
}

/* —— 特性网格 —— */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.feature-item {
  background: var(--card);
  backdrop-filter: blur(8px);
  padding: 40px 36px;
}

.feature-item h4 {
  color: var(--ink);
  margin-bottom: 12px;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.feature-item p,
.feature-item li {
  color: var(--ink-muted);
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.85;
}

.feature-item ul {
  list-style: none;
  padding: 0;
}

.feature-item li {
  padding: 6px 0;
  padding-left: 16px;
  position: relative;
}

.feature-item li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 4px;
  height: 1px;
  background: var(--accent);
}

/* —— 两栏 —— */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.content-block h3 {
  color: var(--ink);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 20px;
  letter-spacing: 0.08em;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.content-block h3 + h3 {
  margin-top: 40px;
}

.content-block p {
  color: var(--ink-muted);
  font-weight: 300;
  font-size: 0.9375rem;
  margin-bottom: 16px;
  line-height: 1.9;
}

.content-list {
  list-style: none;
  color: var(--ink-muted);
  font-size: 0.875rem;
  font-weight: 300;
}

.content-list li {
  padding: 8px 0;
  padding-left: 16px;
  position: relative;
}

.content-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 4px;
  height: 1px;
  background: var(--accent);
}

/* —— 规格表 —— */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--line);
  margin-top: 24px;
}

.spec-table th,
.spec-table td {
  padding: 16px 24px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 0.875rem;
}

.spec-table thead th {
  background: var(--gradient-btn);
  color: var(--white);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.spec-table tr:last-child td {
  border-bottom: none;
}

.spec-table td:first-child {
  font-weight: 500;
  color: var(--ink);
  width: 32%;
  background: var(--surface-muted);
}

/* —— 行业标签 —— */
.industry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 0;
}

.industry-tags--center {
  justify-content: center;
}

.industry-tags span {
  padding: 12px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  margin: -1px 0 0 -1px;
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

/* —— 产品卡片 —— */
.product-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--surface);
  padding: 40px;
  border: 1px solid var(--line);
}

.product-card .model {
  font-size: 0.6875rem;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.2em;
  margin-bottom: 12px;
}

.product-card h3 {
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.product-card ul {
  list-style: none;
  margin-bottom: 24px;
}

.product-card li {
  padding: 8px 0;
  color: var(--ink-muted);
  font-size: 0.875rem;
  font-weight: 300;
  padding-left: 16px;
  position: relative;
}

.product-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 4px;
  height: 1px;
  background: var(--accent);
}

.spec-mini {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.spec-mini div {
  font-size: 0.75rem;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
}

.spec-mini strong {
  display: block;
  color: var(--ink);
  font-size: 1.125rem;
  font-weight: 400;
  margin-bottom: 4px;
}

/* —— 优势 —— */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.advantage-card {
  background: var(--card);
  backdrop-filter: blur(8px);
  padding: 36px 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.advantage-card h4 {
  color: var(--ink);
  margin-bottom: 12px;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.advantage-card p {
  color: var(--ink-muted);
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.85;
}

/* —— 联系 —— */
.contact-section {
  padding: 64px 0 96px;
}

.contact-panel {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 56px;
  background: var(--card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.contact-panel-title {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  background: var(--gradient-title);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: 0.02em;
  text-align: center;
  margin-bottom: 12px;
}

.contact-panel-desc {
  text-align: center;
  color: var(--ink-muted);
  font-size: 0.9375rem;
  font-weight: 300;
  margin-bottom: 40px;
  line-height: 1.85;
}

.contact-list {
  list-style: none;
}

.contact-list-item {
  margin-bottom: 24px;
}

.contact-list-item:last-child {
  margin-bottom: 0;
}

.contact-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 8px;
}

.contact-value-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 14px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.contact-value {
  flex: 1;
  font-size: 0.9375rem;
  color: var(--ink);
  font-weight: 400;
  word-break: break-all;
}

.contact-value a {
  color: var(--accent);
  font-weight: 500;
}

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

.btn-copy {
  flex-shrink: 0;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-hover);
  background: linear-gradient(180deg, #eff6ff, #dbeafe);
  border: 1px solid rgba(37, 99, 235, 0.35);
  border-radius: var(--radius);
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(37, 99, 235, 0.08);
  transition: background var(--transition);
}

.btn-copy:hover {
  background: linear-gradient(180deg, #dbeafe, #bfdbfe);
}

.btn-copy.copied {
  background: var(--gradient-btn);
  color: var(--white);
  border-color: transparent;
}

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

.contact-info-card {
  color: var(--ink);
  padding: 48px;
  background: var(--card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.contact-info-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 36px;
  color: var(--ink);
}

.contact-item {
  display: flex;
  gap: 20px;
  margin-bottom: 28px;
  align-items: flex-start;
}

.contact-item .icon {
  width: 1px;
  height: 32px;
  background: var(--accent);
  flex-shrink: 0;
  font-size: 0;
}

.contact-item strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.contact-item span,
.contact-item a {
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--ink);
}

.contact-item a {
  color: var(--accent);
}

.contact-form-wrap {
  background: var(--surface);
  padding: 48px;
  border: 1px solid var(--line);
}

.contact-form-wrap h3 {
  margin-bottom: 32px;
  color: var(--ink);
  font-weight: 400;
  font-size: 1.125rem;
  letter-spacing: 0.08em;
}

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

.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
  color: var(--ink-muted);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 0;
  border: none;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 300;
  background: transparent;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-bottom-color: var(--accent);
}

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

.form-note {
  font-size: 0.8125rem;
  color: var(--ink-muted);
  margin-top: 16px;
  font-weight: 300;
}

/* —— 页脚 —— */
.site-footer {
  position: relative;
  z-index: 2;
  color: var(--ink-muted);
  padding: 56px 0 28px;
  background: transparent;
  border-top: 1px solid var(--line);
  margin-top: 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.9;
  max-width: 360px;
}

.footer-col h4 {
  color: var(--ink);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 12px;
}

.footer-col a {
  font-size: 0.875rem;
  font-weight: 300;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--accent-bright);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.08em;
}

.bg-alt {
  background: transparent;
}

.highlight-box {
  background: var(--surface-muted);
  padding: 32px;
  border: 1px solid var(--line);
  margin-top: 24px;
}

.highlight-box h4 {
  color: var(--ink);
  margin-bottom: 12px;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.text-muted {
  color: var(--ink-muted);
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.85;
}

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

.link-accent {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

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

.link-row {
  margin-top: 32px;
}

.link-row .link-accent + .link-accent::before {
  content: "·";
  margin: 0 16px;
  color: var(--line-strong);
  letter-spacing: 0;
}

/* —— 终端 —— */
.terminal-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  justify-content: center;
  margin-bottom: 48px;
  border: 1px solid var(--line);
}

.terminal-nav a {
  padding: 12px 20px;
  background: var(--surface);
  border-right: 1px solid var(--line);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--ink-muted);
  transition: color var(--transition), background var(--transition);
}

.terminal-nav a:last-child {
  border-right: none;
}

.terminal-nav a:hover {
  background: var(--gradient-btn);
  color: var(--white);
  border-color: var(--accent);
}

.product-detail {
  background: var(--card);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 48px;
  margin-bottom: 24px;
  scroll-margin-top: 96px;
}

.product-detail .model-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 12px;
}

.product-detail h3 {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 20px;
  letter-spacing: 0.06em;
}

.product-detail .intro {
  color: var(--ink-muted);
  font-size: 0.9375rem;
  font-weight: 300;
  margin-bottom: 28px;
  line-height: 1.9;
}

.feature-tags {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 32px;
}

.feature-tags span {
  padding: 16px 20px;
  background: var(--surface-muted);
  font-size: 0.8125rem;
  font-weight: 300;
  color: var(--ink-soft);
  line-height: 1.7;
}

/* —— 售后 —— */
.service-block {
  background: var(--card);
  backdrop-filter: blur(8px);
  padding: 48px 56px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.service-block h3 {
  color: var(--ink);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.service-block ol {
  padding-left: 1.25em;
  color: var(--ink-muted);
}

.service-block li {
  margin-bottom: 16px;
  line-height: 1.9;
  font-size: 0.9375rem;
  font-weight: 300;
}

.service-block li::marker {
  color: var(--accent);
  font-weight: 500;
}

.service-cta {
  text-align: center;
  padding: 56px 40px;
  border: 1px solid var(--line);
  background: var(--card);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
}

.service-cta p {
  color: var(--ink-muted);
  margin-bottom: 24px;
  font-weight: 300;
}

/* —— 滚动显现 —— */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.business-card.reveal:nth-child(2) { transition-delay: 0.08s; }
.business-card.reveal:nth-child(3) { transition-delay: 0.16s; }
.feature-item.reveal:nth-child(2) { transition-delay: 0.06s; }
.feature-item.reveal:nth-child(3) { transition-delay: 0.12s; }
.feature-item.reveal:nth-child(4) { transition-delay: 0.18s; }

@media (prefers-reduced-motion: reduce) {
  .bg-blobs::before,
  .bg-blobs::after {
    animation-duration: 80s;
  }

  .bg-grid {
    animation-duration: 90s;
  }

  .bg-glow {
    animation-duration: 36s;
  }

  .hero-content,
  .page-hero .container {
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* —— 响应式 —— */
@media (max-width: 900px) {
  .business-grid,
  .feature-grid,
  .footer-grid,
  .two-col,
  .contact-grid,
  .advantage-grid {
    grid-template-columns: 1fr;
  }

  .business-grid,
  .feature-grid {
    gap: 0;
  }
}

@media (max-width: 768px) {
  section {
    padding: 64px 0;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--surface);
    padding: 16px;
    border-bottom: 1px solid var(--line);
    align-items: stretch;
  }

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

  .nav-links a::after {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-content {
    padding: 2.5rem 0 2rem;
  }

  .contact-info-card,
  .contact-form-wrap,
  .contact-panel,
  .product-detail,
  .service-block {
    padding: 32px 24px;
  }
}