/* 冠智未来 GEO — 站点样式（三层页面共用） */
:root {
  --bg: #f5f5f7;
  --bg-elevated: #ffffff;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;
  --line: rgba(0, 0, 0, 0.08);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.1);
  --radius-lg: 28px;
  --radius-md: 18px;
  --accent-air: #00a8e8;
  --accent-pro: #34c759;
  --accent-ultra: #ff9500;
  --accent-brand: #0071e3;
  --max: 1120px;
  --nav-h: 52px;
  --ease-out: cubic-bezier(0.25, 0.1, 0.25, 1);
  --font-ui: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "SF Pro SC",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .ambient {
    animation: none !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 17px;
  line-height: 1.47059;
  letter-spacing: -0.022em;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "kern" 1, "liga" 1;
}

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

a {
  color: var(--accent-brand);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* 顶栏 */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(251, 251, 253, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s ease;
}

.site-nav.is-scrolled {
  background: rgba(255, 255, 255, 0.86);
}

.nav-inner {
  width: 100%;
  max-width: var(--max);
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.03em;
  color: var(--text);
  white-space: nowrap;
}
.brand:hover {
  text-decoration: none;
  opacity: 0.85;
}

.nav-links {
  display: flex;
  gap: 8px 20px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-secondary);
  text-decoration: none;
}
.nav-links a:hover {
  color: var(--text);
}

.nav-links a[aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}

.nav-cta {
  font-size: 12px;
  font-weight: 500;
  color: #fff;
  background: var(--accent-brand);
  padding: 6px 14px;
  border-radius: 980px;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-cta:hover {
  text-decoration: none;
  opacity: 0.92;
}

@media (max-width: 720px) {
  .nav-links {
    display: none;
  }
}

/* 面包屑 — 第 2、3 层 */
.breadcrumb {
  padding: 10px 22px 12px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.breadcrumb-inner {
  max-width: var(--max);
  margin: 0 auto;
  font-size: 13px;
  color: var(--text-tertiary);
}

.breadcrumb-inner a {
  color: var(--text-secondary);
  text-decoration: none;
}
.breadcrumb-inner a:hover {
  color: var(--accent-brand);
  text-decoration: underline;
}

.breadcrumb-inner .sep {
  margin: 0 8px;
  color: #c7c7cc;
  user-select: none;
}

.breadcrumb-inner [aria-current="page"] {
  color: var(--text);
  font-weight: 500;
}

main {
  padding-top: var(--nav-h);
}

.section {
  padding: 100px 22px;
}

.section--tight {
  padding-top: 60px;
  padding-bottom: 60px;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
}

.hero {
  text-align: center;
  padding: 80px 22px 100px;
  background: linear-gradient(180deg, #fbfbfd 0%, var(--bg) 100%);
}

.hero--sub {
  padding: 48px 22px 64px;
}

.hero-eyebrow {
  font-size: 21px;
  font-weight: 600;
  color: var(--accent-brand);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.hero h1 {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0 auto 20px;
  max-width: 900px;
}

.hero-lead {
  font-size: clamp(17px, 2.2vw, 24px);
  font-weight: 400;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 36px;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 128px;
  padding: 12px 24px;
  font-size: 17px;
  font-weight: 500;
  border-radius: 980px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}
.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--accent-brand);
  color: #fff;
}
.btn-primary:hover {
  opacity: 0.92;
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--accent-brand);
  box-shadow: inset 0 0 0 1px var(--accent-brand);
}
.btn-ghost:hover {
  background: rgba(0, 113, 227, 0.06);
  text-decoration: none;
}

.section-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  margin: 0 0 8px;
}

.section-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
}

.section-desc {
  font-size: 21px;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 0 48px;
  line-height: 1.381;
  letter-spacing: -0.022em;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  transition: transform 0.35s cubic-bezier(0.25, 0.1, 0.25, 1),
    box-shadow 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
  background: var(--bg);
}

.card h3 {
  font-size: 21px;
  font-weight: 600;
  margin: 0 0 10px;
  letter-spacing: -0.022em;
}

.card p {
  margin: 0;
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.47;
}

.stat-strip {
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: center;
}

@media (max-width: 720px) {
  .stats {
    grid-template-columns: 1fr;
  }
}

.stat-value {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0 0 8px;
  background: linear-gradient(90deg, #1d1d1f, #424245);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-caption {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.4;
}

.stat-source {
  margin-top: 28px;
  font-size: 12px;
  color: var(--text-tertiary);
  text-align: center;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 900px) {
  .split {
    grid-template-columns: 1fr;
  }
}

.list-check {
  list-style: none;
  padding: 0;
  margin: 0;
}

.list-check li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 14px;
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.47;
}

.list-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-brand);
}

.feature-rows {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-block {
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  border: 1px solid var(--line);
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 720px) {
  .feature-block {
    grid-template-columns: 1fr;
  }
}

.feature-block h4 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
}

.feature-block .sub {
  font-size: 13px;
  color: var(--text-tertiary);
  margin: 4px 0 0;
}

.feature-block p {
  margin: 0;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.figure {
  margin-top: 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: #fff;
}

.figure figcaption {
  padding: 16px 20px;
  font-size: 13px;
  color: var(--text-tertiary);
  text-align: center;
  border-top: 1px solid var(--line);
}

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

.guarantee p {
  font-size: 19px;
  color: var(--text-secondary);
  line-height: 1.45;
}

.site-footer {
  padding: 48px 22px 80px;
  background: #f5f5f7;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--text-tertiary);
}

.footer-grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  gap: 24px;
}

.footer-legal {
  max-width: 680px;
  line-height: 1.5;
}

.footer-legal p {
  margin: 0 0 10px;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.cta-band {
  background: #1d1d1f;
  color: #f5f5f7;
  text-align: center;
  padding: 80px 22px;
}

.cta-band h2 {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 600;
  margin: 0 0 16px;
  letter-spacing: -0.03em;
}

.cta-band p {
  font-size: 19px;
  color: #a1a1a6;
  margin: 0 0 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.cta-band .btn-primary {
  background: #fff;
  color: #1d1d1f;
}

.cta-band .btn-primary:hover {
  opacity: 0.9;
  text-decoration: none;
}

/* 三层引导卡片（首页） */
.tier-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 8px;
}

@media (max-width: 900px) {
  .tier-cards {
    grid-template-columns: 1fr;
  }
}

.tier-card {
  display: block;
  padding: 28px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.tier-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  text-decoration: none;
}

.tier-card .tier-card-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin: 0 0 8px;
}

.tier-card h3 {
  font-size: 22px;
  margin: 0 0 10px;
  font-weight: 600;
}

.tier-card p {
  margin: 0;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.45;
}

.tier-card .go {
  margin-top: 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--accent-brand);
}

/* —— Apple 级排版与高级质感 —— */

/* 全局氛围光（轻量 GPU，移动端降采样） */
.ambient {
  pointer-events: none;
  position: fixed;
  inset: -20%;
  z-index: 0;
  background:
    radial-gradient(ellipse 55% 45% at 20% 15%, rgba(99, 102, 241, 0.09), transparent 55%),
    radial-gradient(ellipse 50% 40% at 85% 20%, rgba(0, 113, 227, 0.08), transparent 50%),
    radial-gradient(ellipse 45% 35% at 50% 95%, rgba(52, 199, 89, 0.06), transparent 45%);
  animation: ambient-drift 22s var(--ease-out) infinite alternate;
}

@keyframes ambient-drift {
  0% {
    transform: translate(0, 0) scale(1);
    opacity: 1;
  }
  100% {
    transform: translate(-2%, 1%) scale(1.03);
    opacity: 0.92;
  }
}

body > main,
body > .site-nav,
body > .site-footer {
  position: relative;
  z-index: 1;
}

/* 首屏沉浸布局 */
.hero--immersive {
  text-align: left;
  padding: 72px 22px 88px;
  background: linear-gradient(165deg, #fbfbfd 0%, #f5f5f7 42%, #eef0f3 100%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 48px;
  align-items: center;
  max-width: 1180px;
}

@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero--immersive .hero-copy {
    order: 0;
  }
  .hero--immersive .hero-visual {
    order: 1;
  }
  .hero--immersive .hero-actions {
    justify-content: center;
  }
  .hero--immersive .hero-meta {
    text-align: center;
  }
}

.hero-copy .hero-eyebrow {
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--text-tertiary);
}

.hero-copy h1 {
  font-size: clamp(40px, 5.5vw, 64px);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.035em;
  margin: 0 0 20px;
}

.hero-copy .hero-lead {
  margin-left: 0;
  margin-right: 0;
  max-width: 36em;
}

@media (max-width: 960px) {
  .hero-copy .hero-lead {
    margin-left: auto;
    margin-right: auto;
  }
}

.hero-meta {
  margin: 28px 0 0;
  font-size: 15px;
  color: var(--text-secondary);
}

.hero-meta a {
  font-weight: 500;
  color: var(--accent-brand);
}

.hero-visual-inner {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow:
    0 24px 80px rgba(0, 0, 0, 0.12),
    0 0 0 1px rgba(255, 255, 255, 0.8) inset;
  background: #fff;
}

.hero-visual-inner img {
  width: 100%;
  height: auto;
  display: block;
  transform: scale(1.01);
}

/* 横向胶片条 */
.filmstrip {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding: 8px 0 20px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.filmstrip img {
  flex: 0 0 min(72vw, 320px);
  width: min(72vw, 320px);
  height: auto;
  border-radius: 16px;
  scroll-snap-align: start;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out);
}

.filmstrip img:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-hover);
}

.section--strip {
  padding-top: 40px;
  padding-bottom: 40px;
}

/* 分栏 + 光泽 */
.split--align-center {
  align-items: center;
}

.split-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.split-img {
  width: 100%;
  border-radius: var(--radius-lg);
}

.shine-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.shine-wrap::after {
  content: "";
  position: absolute;
  inset: -40% -60%;
  background: linear-gradient(
    105deg,
    transparent 40%,
    rgba(255, 255, 255, 0.35) 48%,
    rgba(255, 255, 255, 0.1) 52%,
    transparent 60%
  );
  transform: translateX(-100%);
  animation: shine-sweep 7s var(--ease-out) infinite;
}

@keyframes shine-sweep {
  0%,
  65% {
    transform: translateX(-100%);
  }
  85% {
    transform: translateX(100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.card--flat {
  box-shadow: none;
  background: #fafafa;
}

.card--flat:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* 不规则拼图 */
.mosaic-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.mosaic-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  min-height: 180px;
  transition: transform 0.5s var(--ease-out);
}

.mosaic-grid img:hover {
  transform: scale(1.02);
}

.mosaic-tall {
  grid-row: span 2;
  min-height: 100%;
}

.mosaic-wide {
  grid-column: span 2;
}

@media (max-width: 720px) {
  .mosaic-grid {
    grid-template-columns: 1fr;
  }
  .mosaic-tall,
  .mosaic-wide {
    grid-row: auto;
    grid-column: auto;
    min-height: 200px;
  }
}

.mosaic-grid--sm {
  grid-template-columns: 1fr 1fr;
}

/* 联系页 */
.hero--contact {
  background: linear-gradient(180deg, #fbfbfd 0%, #f5f5f7 100%);
}

.section--contact {
  padding-top: 48px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.glass-card {
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border-radius: var(--radius-lg);
  padding: 36px 32px 40px;
  border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.06),
    0 0 0 1px rgba(0, 0, 0, 0.04) inset;
}

.contact-name {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.03em;
  margin: 0 0 6px;
}

.contact-role {
  margin: 0 0 20px;
  color: var(--text-secondary);
  font-size: 17px;
}

.contact-tel {
  display: inline-block;
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--accent-brand);
  text-decoration: none;
}

.contact-tel:hover {
  opacity: 0.85;
  text-decoration: none;
}

.contact-hint {
  margin: 16px 0 24px;
  font-size: 14px;
  color: var(--text-tertiary);
  line-height: 1.45;
}

.qr-block {
  margin: 0;
  text-align: center;
}

.qr-block img {
  margin: 0 auto;
  border-radius: 16px;
  border: 1px solid var(--line);
}

.qr-block figcaption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-tertiary);
  line-height: 1.4;
}

.qr-block--wechat {
  position: relative;
}

.qr-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 300px;
  height: 300px;
  margin-left: -150px;
  margin-top: -150px;
  border-radius: 50%;
  border: 2px solid rgba(0, 113, 227, 0.15);
  animation: qr-breathe 3.2s ease-in-out infinite;
  pointer-events: none;
}

@keyframes qr-breathe {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.06);
    opacity: 0.9;
  }
}

/* 轻微漂浮（卡片） */
.float-slow {
  animation: float-y 6s ease-in-out infinite;
}

.float-delay {
  animation-delay: -3s;
}

@keyframes float-y {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

.hero--split .hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  text-align: left;
}

@media (max-width: 900px) {
  .hero--split .hero-split {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero--split .hero-actions {
    justify-content: center;
  }
}

.hero-split-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-hover);
}

.hero-split-img img {
  width: 100%;
  display: block;
}

.stat-strip--glow {
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.06),
    0 0 80px rgba(0, 113, 227, 0.06);
}

.inline-code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  font-size: 0.9em;
  background: rgba(0, 0, 0, 0.05);
  padding: 2px 8px;
  border-radius: 6px;
}

/* 移动端菜单 */
.nav-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.05);
  cursor: pointer;
  margin-left: auto;
  margin-right: 8px;
}

.nav-menu-icon,
.nav-menu-icon::before,
.nav-menu-icon::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  position: relative;
  transition: transform 0.25s var(--ease-out), opacity 0.2s;
}

.nav-menu-icon::before,
.nav-menu-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-menu-icon::before {
  top: -6px;
}

.nav-menu-icon::after {
  top: 6px;
}

.site-nav.is-open .nav-menu-icon {
  background: transparent;
}

.site-nav.is-open .nav-menu-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.site-nav.is-open .nav-menu-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

@media (max-width: 720px) {
  .nav-menu-btn {
    display: flex;
  }
  .nav-cta {
    display: none;
  }
}

.nav-panel {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  padding: 20px 22px 28px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 16px;
  z-index: 999;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
}

.nav-panel[hidden] {
  display: none !important;
}

.nav-panel a {
  font-size: 20px;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  padding: 8px 0;
}

.nav-panel a:hover {
  color: var(--accent-brand);
}

.nav-panel-tel {
  font-size: 22px !important;
  font-weight: 600 !important;
  color: var(--accent-brand) !important;
}

body.nav-open {
  overflow: hidden;
}

/* 阅读顺序（替代重复的三张大卡片） */
.site-flow {
  margin: 0;
  padding: 0;
}

.flow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--text-secondary);
}

.flow-steps li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.flow-steps a {
  color: var(--text);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.flow-steps a:hover {
  color: var(--accent-brand);
  border-bottom-color: rgba(0, 113, 227, 0.35);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 600;
  background: rgba(0, 113, 227, 0.1);
  color: var(--accent-brand);
}

.flow-steps li.is-current .step-num {
  background: var(--accent-brand);
  color: #fff;
}

.flow-steps li.is-current {
  color: var(--text);
  font-weight: 500;
}

/* 效果保障（无报价、无档位） */
.guarantee-banner {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(52, 199, 89, 0.1) 0%, rgba(0, 113, 227, 0.06) 100%);
  border: 1px solid rgba(52, 199, 89, 0.22);
  text-align: center;
}

.guarantee-banner p {
  margin: 0;
  font-size: 16px;
  line-height: 1.45;
  color: var(--text-secondary);
}

.guarantee-banner strong {
  color: var(--text);
}

.guarantee-banner .guarantee-note {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-tertiary);
}

@media (prefers-reduced-motion: reduce) {
  .ambient,
  .shine-wrap::after,
  .float-slow,
  .float-delay,
  .qr-ring {
    animation: none !important;
  }
  .filmstrip img:hover,
  .mosaic-grid img:hover {
    transform: none;
  }
}