:root {
  --bg: #ffffff;
  --bg-elevated: #f7faf9;
  --bg-soft: #eef6f4;
  --text: #0c1a17;
  --muted: #5b6b66;
  --accent: #0f766e;
  --accent-deep: #115e59;
  --accent-bright: #14b8a6;
  --accent-soft: rgba(15, 118, 110, 0.09);
  --border: #dce8e4;
  --shadow: 0 1px 2px rgba(12, 26, 23, 0.04), 0 8px 24px rgba(12, 26, 23, 0.04);
  --shadow-lg: 0 4px 12px rgba(15, 118, 110, 0.08), 0 24px 56px rgba(12, 26, 23, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-bg-strong: rgba(255, 255, 255, 0.86);
  --glass-border: rgba(255, 255, 255, 0.6);
  --glass-blur: 16px;
  --glow: 0 0 0 1px rgba(20, 184, 166, 0.18), 0 8px 32px rgba(20, 184, 166, 0.12);
  --deep-bg: #0a1f1c;
  --deep-bg-2: #0f2926;
  --deep-text: #e7f3f0;
  --deep-muted: rgba(231, 243, 240, 0.7);
  --deep-border: rgba(94, 234, 212, 0.16);
  --deep-glass: rgba(94, 234, 212, 0.04);
  --max: 1120px;
  --font: "Noto Sans SC", "DM Sans", "Segoe UI", sans-serif;
  --display: "DM Sans", "Noto Sans SC", sans-serif;
  --mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.narrow {
  max-width: 40rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: inherit;
}

.brand-logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  gap: 0.08rem;
}

.brand-mark {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  color: var(--accent-deep);
}

.brand-sub {
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-brand,
.about-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin: 0 0 1rem;
}

.hero-brand img,
.about-brand img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  display: block;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1.15rem;
  align-items: center;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.nav a:hover,
.nav a.is-active {
  color: var(--accent-deep);
}

.nav-cta {
  padding: 0.38rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(15, 118, 110, 0.35);
  color: var(--accent) !important;
  font-weight: 500;
}

.nav-cta:hover {
  background: var(--accent-soft);
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-elevated);
  cursor: pointer;
  position: relative;
}

.nav-toggle::before,
.nav-toggle::after {
  content: "";
  position: absolute;
  left: 0.55rem;
  right: 0.55rem;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
}

.nav-toggle::before {
  top: 0.85rem;
}

.nav-toggle::after {
  top: 1.25rem;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: block;
  }
  .nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    display: none;
  }
  .nav.nav-open {
    display: flex;
  }
  .site-header .wrap {
    position: relative;
  }
}

.hero {
  position: relative;
  padding: clamp(3.2rem, 9vw, 5.6rem) 0 4.2rem;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 85% -10%, rgba(15, 118, 110, 0.14), transparent 55%),
    linear-gradient(165deg, #f0faf7 0%, #ffffff 48%, #f7faf9 100%);
}

.hero-visual {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(15, 118, 110, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 118, 110, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, #000 20%, transparent 90%);
  opacity: 0.7;
}

.hero-inner {
  position: relative;
}

.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.85rem;
  font-weight: 600;
}

.hero h1 {
  margin: 0 0 1.1rem;
  font-family: var(--display);
  font-size: clamp(1.85rem, 4.6vw, 2.85rem);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.025em;
  max-width: 14em;
}

.hero-lead {
  margin: 0 0 1.85rem;
  color: var(--muted);
  font-size: 1.06rem;
  max-width: 38em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.6rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.68rem 1.3rem;
  border-radius: 10px;
  font-size: 0.94rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  border: none;
}

.btn.primary:hover {
  background: var(--accent-deep);
}

.btn.ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: #fff;
}

.btn.ghost:hover {
  border-color: rgba(15, 118, 110, 0.4);
  color: var(--accent);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem 1.5rem;
  margin: 0;
  padding: 1.4rem 0 0;
  border-top: 1px solid var(--border);
  max-width: 48rem;
}

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

.hero-stats dt {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.3rem;
}

.hero-stats dd {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
}

.section {
  padding: clamp(2.8rem, 5.5vw, 4.4rem) 0;
}

.section-alt {
  background: var(--bg-elevated);
  border-block: 1px solid var(--border);
}

.section-deep {
  background: #0f2926;
  color: #e7f3f0;
  border: none;
}

.section-deep .section-title {
  color: #fff;
}

.section-deep .section-lead,
.section-deep .prose {
  color: rgba(231, 243, 240, 0.78);
}

.section-title {
  margin: 0 0 0.7rem;
  font-family: var(--display);
  font-size: clamp(1.4rem, 2.6vw, 1.75rem);
  font-weight: 650;
  letter-spacing: -0.02em;
}

.section-lead {
  margin: 0 0 1.85rem;
  color: var(--muted);
  max-width: 42em;
  font-size: 1.02rem;
}

.prose {
  margin: 0 0 1.05rem;
  color: #2d3f3a;
  font-size: 1.02rem;
}

.prose:last-child {
  margin-bottom: 0;
}

.page-hero {
  padding: clamp(2.4rem, 6vw, 3.6rem) 0 2rem;
  background: linear-gradient(180deg, #f0faf7 0%, #fff 100%);
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  margin: 0 0 0.75rem;
  font-family: var(--display);
  font-size: clamp(1.65rem, 3.5vw, 2.2rem);
  letter-spacing: -0.02em;
}

.page-hero .lead {
  margin: 0;
  color: var(--muted);
  max-width: 40em;
  font-size: 1.05rem;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

@media (max-width: 860px) {
  .pillars {
    grid-template-columns: 1fr;
  }
}

.pillar {
  padding: 1.6rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  box-shadow: var(--shadow);
}

.pillar h3 {
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
}

.pillar p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.pillar .kicker {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.55rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.15rem;
}

.card {
  padding: 1.45rem 1.3rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: var(--shadow);
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: rgba(15, 118, 110, 0.35);
  transform: translateY(-2px);
}

.card-num {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 0.45rem;
}

.card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.feature-list li {
  display: grid;
  gap: 0.25rem;
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
}

.feature-list strong {
  font-size: 1.02rem;
}

.feature-list span {
  color: var(--muted);
  font-size: 0.94rem;
}

.arch-layers {
  display: grid;
  gap: 0.85rem;
  max-width: 48rem;
}

.arch-layer {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.2rem 1.3rem;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

@media (max-width: 640px) {
  .arch-layer {
    grid-template-columns: 1fr;
  }
}

.arch-layer .layer-id {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #5eead4;
  font-weight: 600;
}

.arch-layer h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  color: #fff;
}

.arch-layer p {
  margin: 0;
  font-size: 0.92rem;
  color: rgba(231, 243, 240, 0.75);
}

.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

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

@media (max-width: 520px) {
  .flow {
    grid-template-columns: 1fr;
  }
}

.flow-item {
  padding: 1.15rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
  min-height: 7.5rem;
}

.flow-item .n {
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.flow-item h3 {
  margin: 0.4rem 0 0.35rem;
  font-size: 0.98rem;
}

.flow-item p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
  max-width: 52rem;
}

.timeline li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.45rem 1rem;
  align-items: baseline;
  padding: 1rem 1.15rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: var(--shadow);
}

.timeline .step {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
}

.timeline li span:last-child {
  grid-column: 2;
  font-size: 0.88rem;
  color: var(--muted);
}

.timeline li strong {
  grid-column: 2;
  font-size: 1rem;
}

.faq {
  display: grid;
  gap: 0.85rem;
  max-width: 46rem;
}

.faq details {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  padding: 0.95rem 1.15rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq p {
  margin: 0.65rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.contact-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.contact-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: baseline;
  padding: 0.9rem 1.05rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

.contact-list .label {
  min-width: 3em;
  font-size: 0.85rem;
  color: var(--muted);
}

.contact-list a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.contact-list a:hover {
  text-decoration: underline;
}

.contact-list .value {
  font-weight: 500;
}

.wecom-kf {
  margin-top: 1.75rem;
  display: grid;
  gap: 1.1rem;
  justify-items: start;
}

.wecom-kf-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem 1.5rem;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  max-width: 36rem;
}

.wecom-kf-card img {
  width: 148px;
  height: auto;
  border-radius: 10px;
  display: block;
}

.wecom-kf-copy {
  flex: 1 1 12rem;
  min-width: 0;
}

.wecom-kf-copy p {
  margin: 0 0 0.85rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.wecom-kf-copy .btn {
  margin-right: 0.5rem;
  margin-bottom: 0.35rem;
}

.mall-grid {
  display: grid;
  gap: 1.4rem;
  grid-template-columns: repeat(auto-fill, minmax(20rem, 1fr));
}

.mall-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.6rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px) saturate(1.3);
  -webkit-backdrop-filter: blur(12px) saturate(1.3);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.mall-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.3), transparent 40%, transparent 60%, rgba(20, 184, 166, 0.14));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}

.mall-card:hover {
  border-color: rgba(20, 184, 166, 0.4);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

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

.mall-card-feature {
  border-color: rgba(15, 118, 110, 0.35);
  background: linear-gradient(180deg, rgba(240, 250, 247, 0.9), rgba(255, 255, 255, 0.85));
}

.mall-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.mall-tag {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.mall-price {
  flex: none;
  padding: 0.24rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 0.85rem;
  font-weight: 600;
}

.mall-card h3 {
  margin: 0;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
}

.mall-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.mall-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
  flex: 1;
}

.mall-list li {
  position: relative;
  padding-left: 1.05rem;
  font-size: 0.9rem;
  color: var(--text);
}

.mall-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--accent-bright);
}

.mall-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.35rem;
}

.mall-hero {
  padding: clamp(2.8rem, 7vw, 4.2rem) 0 2.4rem;
  background:
    radial-gradient(ellipse 70% 55% at 50% -10%, rgba(20, 184, 166, 0.14), transparent 60%),
    linear-gradient(180deg, #f0faf7 0%, #fff 100%);
  border-bottom: 1px solid var(--border);
}

.mall-hero h1 {
  margin: 0 0 0.85rem;
  font-family: var(--display);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  letter-spacing: -0.02em;
}

.mall-hero .lead {
  margin: 0;
  color: var(--muted);
  max-width: 42em;
  font-size: 1.06rem;
}

.mall-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.4rem;
}

.mall-hero-points {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
}

.mall-hero-points li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.mall-hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
}

.mall-modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.mall-modal[hidden] {
  display: none;
}

.mall-modal-mask {
  position: absolute;
  inset: 0;
  background: rgba(10, 31, 28, 0.5);
  backdrop-filter: blur(4px);
}

.mall-modal-panel {
  position: relative;
  width: min(100%, 34rem);
  max-height: min(86vh, 40rem);
  overflow: auto;
  background: #fff;
  border-radius: 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: 1.6rem 1.6rem 1.4rem;
}

.mall-modal-close {
  position: absolute;
  top: 0.7rem;
  right: 0.9rem;
  width: 2.2rem;
  height: 2.2rem;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: #fff;
  font-size: 1.3rem;
  line-height: 1;
  color: var(--muted);
  cursor: pointer;
}

.mall-modal-close:hover {
  color: var(--accent-deep);
  border-color: rgba(15, 118, 110, 0.4);
}

.mall-modal-tag {
  margin: 0 0 0.3rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.mall-modal-panel h3 {
  margin: 0 0 0.5rem;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}

.mall-modal-lead {
  margin: 0 0 1.1rem;
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.6;
}

.mall-modal-group {
  margin-bottom: 1.05rem;
}

.mall-modal-group h4 {
  margin: 0 0 0.5rem;
  font-size: 0.88rem;
  color: var(--accent-deep);
  font-weight: 600;
}

.mall-modal-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.mall-modal-group li {
  position: relative;
  padding-left: 1.05rem;
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.55;
}

.mall-modal-group li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--accent-bright);
}

.mall-modal-note {
  margin: 1rem 0 0;
  padding: 0.8rem 1rem;
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.4rem 0 1.6rem;
  background: var(--bg-elevated);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.5rem 2rem;
  margin-bottom: 1.6rem;
}

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

.footer-col {
  display: grid;
  gap: 0.35rem;
  align-content: start;
}

.footer-col p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-heading {
  font-size: 0.72rem !important;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text) !important;
  font-weight: 600;
  margin-bottom: 0.25rem !important;
}

.footer-col a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.footer-brand .brand-logo {
  width: 32px;
  height: 32px;
}

.footer-copy-row {
  border-top: 1px solid var(--border);
  padding-top: 1.1rem;
}

.footer-copy {
  margin: 0;
  font-size: 0.84rem;
  color: var(--muted);
  text-align: center;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.two-col {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 860px) {
  .two-col {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
 * 重构批次1 · 青绿玻璃态 + 集群可视化 + 微动效（哥哥 2026-07-19）
 * 范式：yiyi-prompt-completion · 定调 A · 不破坏现有，只增强
 * ============================================================ */

/* --- 玻璃态质感层 --- */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
  border: 1px solid var(--glass-border);
}

.site-header {
  background: var(--glass-bg-strong) !important;
  backdrop-filter: blur(18px) saturate(1.6) !important;
  -webkit-backdrop-filter: blur(18px) saturate(1.6) !important;
  border-bottom-color: rgba(220, 232, 228, 0.7) !important;
}

/* --- Hero 集群可视化 --- */
.hero {
  background:
    radial-gradient(ellipse 70% 50% at 78% -8%, rgba(20, 184, 166, 0.18), transparent 60%),
    radial-gradient(ellipse 50% 40% at 12% 110%, rgba(15, 118, 110, 0.12), transparent 55%),
    linear-gradient(165deg, #f0faf7 0%, #ffffff 48%, #f7faf9 100%) !important;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.92;
  z-index: 0;
}

.hero-inner {
  z-index: 1;
}

.hero-visual {
  opacity: 0.35 !important;
  background-size: 64px 64px !important;
}

.hero h1 {
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.6);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(20, 184, 166, 0.3);
  background: rgba(20, 184, 166, 0.06);
  font-size: 0.72rem !important;
  letter-spacing: 0.18em !important;
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-bright);
  box-shadow: 0 0 8px var(--accent-bright);
  animation: pulse 2.4s var(--ease) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

/* --- 玻璃态卡片 --- */
.pillar,
.card,
.feature-list li,
.flow-item,
.timeline li,
.faq details,
.contact-list li {
  background: var(--glass-bg) !important;
  backdrop-filter: blur(12px) saturate(1.3);
  -webkit-backdrop-filter: blur(12px) saturate(1.3);
  border-color: rgba(220, 232, 228, 0.7) !important;
}

.pillar,
.card {
  position: relative;
  overflow: hidden;
}

.pillar::before,
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.25), transparent 40%, transparent 60%, rgba(20, 184, 166, 0.12));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}

.pillar:hover::before,
.card:hover::before {
  opacity: 1;
}

.card:hover {
  border-color: rgba(20, 184, 166, 0.4) !important;
  box-shadow: var(--shadow-lg) !important;
  transform: translateY(-3px);
}

/* --- 深色科技章节增强 --- */
.section-deep {
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(20, 184, 166, 0.12), transparent 60%),
    linear-gradient(180deg, var(--deep-bg) 0%, var(--deep-bg-2) 100%) !important;
  position: relative;
}

.section-deep::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(94, 234, 212, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94, 234, 212, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000, transparent 80%);
  pointer-events: none;
}

.section-deep .wrap {
  position: relative;
  z-index: 1;
}

.arch-layer {
  background: var(--deep-glass) !important;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-color: var(--deep-border) !important;
}

/* --- 滚动入场动画 --- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

[data-reveal][data-reveal-delay="1"] { transition-delay: 0.08s; }
[data-reveal][data-reveal-delay="2"] { transition-delay: 0.16s; }
[data-reveal][data-reveal-delay="3"] { transition-delay: 0.24s; }

/* --- 章节标题装饰 --- */
.section-title {
  position: relative;
  padding-left: 0.9rem;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent-bright), var(--accent-deep));
}

/* --- 按钮 --- */
.btn.primary {
  background: linear-gradient(135deg, var(--accent-bright), var(--accent-deep)) !important;
  box-shadow: 0 4px 14px rgba(15, 118, 110, 0.28);
}

.btn.primary:hover {
  box-shadow: 0 6px 20px rgba(15, 118, 110, 0.38);
  transform: translateY(-1px);
}

/* --- 终端/代码块（科技感细节） --- */
.mono, code, kbd {
  font-family: var(--mono);
  font-size: 0.88em;
}

.kbd {
  display: inline-block;
  padding: 0.1em 0.45em;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  font-family: var(--mono);
  font-size: 0.82em;
  color: var(--accent-deep);
}

/* --- 减少动效 --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .eyebrow::before { animation: none; }
}

/* --- 手机端修复（哥哥 2026-07-19 截图反馈） --- */
@media (max-width: 720px) {
  .hero-canvas {
    opacity: 0.2;
    mask-image: linear-gradient(180deg, transparent 0%, #000 55%, #000 100%);
    -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 55%, #000 100%);
  }
  .wrap {
    width: min(100% - 3rem, var(--max));
  }
  .section {
    padding-inline: 0;
  }
  .section .wrap {
    padding-inline: 0.25rem;
  }
}

@media (max-width: 520px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-stats {
    gap: 0.85rem 1rem;
  }
}