:root {
  --bg-primary: #f5f7fb;
  --bg-secondary: rgba(255, 255, 255, 0.72);
  --surface-strong: #ffffff;
  --surface-soft: rgba(255, 255, 255, 0.62);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  --line-soft: rgba(148, 163, 184, 0.18);
  --line-strong: rgba(148, 163, 184, 0.32);
  --brand-primary: #ff4f93;
  --brand-secondary: #8b5cf6;
  --brand-accent: #ffb84d;
  --shadow-soft: 0 24px 80px rgba(15, 23, 42, 0.08);
  --shadow-strong: 0 40px 90px rgba(76, 29, 149, 0.18);
  --radius-large: 32px;
  --radius-medium: 22px;
  --radius-small: 16px;
  --container-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-primary);
  background:
    radial-gradient(circle at top left, rgba(255, 79, 147, 0.18), transparent 32%),
    radial-gradient(circle at 82% 18%, rgba(139, 92, 246, 0.18), transparent 24%),
    linear-gradient(180deg, #f8f9fd 0%, #eef2f9 100%);
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
  cursor: pointer;
}

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

.page-shell {
  min-height: 100vh;
  overflow: hidden;
}

.container {
  width: min(calc(100% - 48px), var(--container-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: rgba(245, 247, 251, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}

.header-inner,
.footer-inner,
.hero-grid,
.experience-grid,
.cta-panel,
.hero-actions,
.hero-metrics,
.highlight-grid,
.scene-grid,
.site-nav,
.cta-actions {
  display: flex;
}

.header-inner {
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-mark {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  box-shadow: 0 0 0 8px rgba(255, 79, 147, 0.12);
}

.site-nav {
  align-items: center;
  gap: 28px;
  color: var(--text-secondary);
  font-size: 14px;
}

.site-nav a {
  transition: color 0.25s ease;
}

.site-nav a:hover {
  color: var(--text-primary);
}

.nav-cta,
.primary-button {
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand-primary), #ff6aa7 52%, var(--brand-secondary));
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 18px 40px rgba(255, 79, 147, 0.28);
  transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

.nav-cta {
  padding: 12px 22px;
  font-size: 14px;
}

.primary-button {
  min-width: 156px;
  padding: 16px 28px;
  font-size: 15px;
}

.nav-cta:hover,
.primary-button:hover,
.modal-close:hover {
  transform: translateY(-2px);
  filter: brightness(1.04);
}

.hero-section,
.highlights-section,
.experience-section,
.scenes-section,
.cta-section {
  position: relative;
}

.hero-section {
  padding: 72px 0 52px;
}

.hero-grid {
  align-items: center;
  justify-content: space-between;
  gap: 72px;
}

.hero-copy,
.experience-copy {
  flex: 0 0 50%;
}

.hero-visual,
.experience-visual {
  flex: 0 0 44%;
  position: relative;
}

.eyebrow,
.section-label,
.modal-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-secondary);
}

.eyebrow::before,
.section-label::before,
.modal-tag::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
  opacity: 0.8;
}

.hero-copy h1,
.section-heading h2,
.experience-copy h2,
.cta-copy h2,
.modal-card h2 {
  margin: 20px 0 0;
  letter-spacing: 0;
}

.hero-copy h1 {
  max-width: 760px;
  font-size: clamp(40px, 4.9vw, 62px);
  line-height: 1.08;
  font-weight: 700;
  text-wrap: balance;
}

.hero-description,
.experience-copy p,
.cta-copy p,
.modal-card p,
.highlight-card p,
.scene-item p,
.footer-inner p {
  color: var(--text-secondary);
  line-height: 1.8;
}

.hero-description {
  max-width: 620px;
  margin: 24px 0 0;
  font-size: 17px;
  text-wrap: pretty;
}

.title-line,
.copy-break {
  display: block;
}

.hero-actions {
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-top: 34px;
}

.status-note {
  color: var(--text-tertiary);
  font-size: 14px;
}

.hero-metrics {
  flex-wrap: wrap;
  gap: 16px;
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
}

.hero-metrics li {
  flex: 1 1 180px;
  min-width: 180px;
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: var(--radius-small);
  background: var(--surface-soft);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-soft);
}

.hero-metrics strong,
.highlight-card h3,
.scene-item h3,
.stage-card strong,
.footer-brand {
  display: block;
  font-size: 18px;
  font-weight: 700;
}

.hero-metrics span {
  display: block;
  margin-top: 8px;
  color: var(--text-tertiary);
  font-size: 14px;
  line-height: 1.7;
}

.device-stage {
  position: relative;
  min-height: 680px;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.visual-halo {
  position: absolute;
  border-radius: 50%;
  filter: blur(22px);
  pointer-events: none;
}

.visual-halo-left {
  top: 12%;
  left: 4%;
  width: 180px;
  height: 180px;
  background: rgba(255, 79, 147, 0.2);
}

.visual-halo-right {
  right: 2%;
  bottom: 10%;
  width: 220px;
  height: 220px;
  background: rgba(139, 92, 246, 0.18);
}

.phone-frame {
  position: relative;
  z-index: 2;
  width: min(332px, 100%);
  padding: 16px;
  border-radius: 46px;
  background: rgba(8, 15, 31, 0.94);
  box-shadow: var(--shadow-strong);
}

.phone-notch {
  position: absolute;
  top: 12px;
  left: 50%;
  width: 132px;
  height: 28px;
  border-radius: 0 0 18px 18px;
  transform: translateX(-50%);
  background: rgba(8, 15, 31, 0.98);
  z-index: 2;
}

.phone-frame img {
  width: 100%;
  aspect-ratio: 375 / 812;
  object-fit: cover;
  border-radius: 34px;
  background: #ffffff;
}

.stage-card {
  position: absolute;
  z-index: 1;
  width: min(188px, 34%);
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.62);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-soft);
}

.stage-card span {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--brand-primary);
  font-size: 13px;
  font-weight: 700;
}

.stage-card strong {
  font-size: 18px;
  line-height: 1.55;
}

.stage-card-left {
  top: 25%;
  left: 0;
}

.stage-card-right {
  right: 2%;
  bottom: 20%;
}

.highlights-section,
.experience-section,
.scenes-section,
.cta-section {
  padding: 44px 0 42px;
}

.section-heading {
  max-width: 920px;
  margin-bottom: 26px;
}

.section-heading h2,
.experience-copy h2,
.cta-copy h2,
.modal-card h2 {
  font-size: clamp(30px, 3vw, 48px);
  line-height: 1.18;
  font-weight: 700;
  text-wrap: balance;
}

.highlight-grid {
  gap: 20px;
}

.highlight-card,
.scene-item,
.cta-panel,
.experience-panel {
  border: 1px solid rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.68);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-soft);
}

.highlight-card {
  flex: 1 1 0;
  min-height: 260px;
  padding: 28px;
  border-radius: 24px;
}

.card-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(255, 79, 147, 0.12);
  color: var(--brand-primary);
  font-size: 13px;
  font-weight: 700;
}

.highlight-card h3,
.scene-item h3 {
  margin: 28px 0 0;
  line-height: 1.4;
}

.highlight-card p,
.scene-item p {
  margin: 16px 0 0;
  font-size: 15px;
}

.experience-grid {
  align-items: center;
  gap: 48px;
}

.experience-copy p {
  margin: 24px 0 0;
  font-size: 16px;
  max-width: 620px;
  text-wrap: pretty;
}

.experience-list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.experience-list li {
  position: relative;
  padding-left: 20px;
  color: var(--text-secondary);
  line-height: 1.9;
}

.experience-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
}

.experience-panel {
  padding: 24px;
  border-radius: 30px;
}

.panel-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--text-tertiary);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel-image-wrap {
  margin-top: 20px;
  padding: 18px;
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(247, 249, 253, 0.88));
}

.panel-image-wrap img {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  aspect-ratio: 375 / 812;
  object-fit: cover;
  border-radius: 26px;
  box-shadow: 0 28px 56px rgba(15, 23, 42, 0.12);
}

.scene-grid {
  gap: 20px;
}

.scene-item {
  flex: 1 1 0;
  min-height: 240px;
  padding: 28px;
  border-radius: 24px;
}

.cta-section {
  padding-bottom: 72px;
}

.cta-panel {
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 40px;
  border-radius: 32px;
}

.cta-copy {
  max-width: 760px;
}

.cta-copy p {
  margin-top: 18px;
  font-size: 16px;
  max-width: 620px;
  text-wrap: pretty;
}

.cta-actions {
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.site-footer {
  padding: 0 0 36px;
}

.footer-inner {
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}

.footer-brand {
  font-size: 18px;
}

.footer-inner p {
  margin: 10px 0 0;
  font-size: 14px;
}

.company-name {
  color: var(--text-tertiary);
  font-size: 14px;
  text-align: right;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(15, 23, 42, 0.48);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.28s ease, visibility 0.28s ease;
}

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

.modal-card {
  position: relative;
  width: min(100%, 520px);
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 30px 80px rgba(15, 23, 42, 0.18);
}

.modal-card p {
  margin: 18px 0 0;
  font-size: 15px;
}

.modal-action {
  margin-top: 28px;
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 50%;
  background: rgba(148, 163, 184, 0.12);
  color: var(--text-primary);
  font-size: 24px;
  line-height: 1;
  transition: transform 0.25s ease, background 0.25s ease;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  animation: fade-up 0.85s cubic-bezier(0.2, 1, 0.22, 1) forwards;
}

.hero-copy.reveal {
  animation-delay: 0.08s;
}

.hero-visual.reveal {
  animation-delay: 0.2s;
}

.highlight-card:nth-child(2).reveal,
.scene-item:nth-child(2).reveal {
  animation-delay: 0.12s;
}

.highlight-card:nth-child(3).reveal,
.scene-item:nth-child(3).reveal {
  animation-delay: 0.24s;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1100px) {
  .hero-grid,
  .experience-grid,
  .cta-panel {
    flex-direction: column;
  }

  .hero-copy,
  .experience-copy,
  .experience-visual,
  .hero-visual,
  .cta-copy {
    width: 100%;
    max-width: none;
    flex: none;
  }

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

  .title-line,
  .copy-break {
    display: inline;
  }

  .hero-copy h1 {
    max-width: 11em;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-description,
  .section-heading,
  .cta-copy {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions,
  .hero-metrics,
  .cta-actions {
    justify-content: center;
  }

  .device-stage {
    min-height: 620px;
  }

  .stage-card-left {
    left: 6%;
  }

  .stage-card-right {
    right: 6%;
  }
}

@media (max-width: 860px) {
  .container {
    width: min(calc(100% - 32px), var(--container-width));
  }

  .site-nav {
    display: none;
  }

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

  .hero-copy h1 {
    max-width: 9.5em;
    font-size: clamp(34px, 8.4vw, 46px);
    line-height: 1.12;
  }

  .highlight-grid,
  .scene-grid {
    flex-direction: column;
  }

  .device-stage {
    min-height: auto;
    padding: 56px 0 24px;
  }

  .stage-card {
    position: static;
    width: 100%;
    max-width: 320px;
    margin: 0 auto 18px;
  }

  .phone-frame {
    width: min(340px, 92%);
    margin: 0 auto;
  }

  .cta-panel {
    padding: 32px 26px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .company-name {
    text-align: left;
  }
}

@media (max-width: 560px) {
  .header-inner {
    min-height: 70px;
    gap: 14px;
  }

  .brand-text {
    font-size: 18px;
  }

  .nav-cta {
    padding: 11px 16px;
  }

  .hero-section,
  .highlights-section,
  .experience-section,
  .scenes-section {
    padding-top: 32px;
    padding-bottom: 30px;
  }

  .hero-description,
  .experience-copy p,
  .cta-copy p,
  .highlight-card p,
  .scene-item p,
  .modal-card p {
    font-size: 15px;
  }

  .hero-copy h1 {
    max-width: 100%;
    font-size: clamp(30px, 8vw, 32px);
    line-height: 1.16;
  }

  .title-line {
    display: block;
  }

  .copy-break {
    display: inline;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .primary-button,
  .nav-cta,
  .modal-action {
    width: 100%;
  }

  .hero-metrics li,
  .highlight-card,
  .scene-item {
    min-width: 0;
  }

  .hero-metrics {
    flex-direction: column;
  }

  .phone-frame {
    width: min(300px, 100%);
    padding: 12px;
    border-radius: 36px;
  }

  .phone-notch {
    width: 112px;
    height: 24px;
  }

  .phone-frame img {
    border-radius: 26px;
  }

  .experience-panel,
  .highlight-card,
  .scene-item,
  .modal-card {
    padding: 22px;
    border-radius: 22px;
  }

  .cta-panel {
    padding: 26px 20px;
    border-radius: 24px;
  }
}