:root {
  --bg-main: #121212;
  --bg-elev-1: #1e1e1e;
  --bg-elev-2: #282828;
  --bg-elev-3: #101010;
  --text-main: #f6f6f6;
  --text-soft: #c9c9c9;
  --text-dim: #9a9a9a;
  --accent: #39ff88;
  --accent-2: #00ffa3;
  --accent-contrast: #04150c;
  --border-subtle: #313131;
  --shadow-glow: 0 0 0 1px rgba(57, 255, 136, 0.22), 0 20px 40px rgba(0, 0, 0, 0.45);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --content-max: 1120px;
  --trans-fast: 180ms ease;
  --trans-mid: 260ms ease;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-main);
  color: var(--text-main);
  font-family: "Segoe UI", "Helvetica Neue", "Noto Sans SC", "PingFang SC", sans-serif;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  padding-top: 82px;
}

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

.container {
  width: min(var(--content-max), 92vw);
  margin: 0 auto;
}

.section {
  padding: 72px 0;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.brand svg {
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
}

.brand-text {
  font-size: 1.08rem;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  color: var(--text-main);
  cursor: pointer;
}

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

.site-nav a {
  font-weight: 600;
  color: var(--text-soft);
  transition: color var(--trans-fast), opacity var(--trans-fast);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text-main);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 999px;
  padding: 0.72rem 1.25rem;
  font-weight: 800;
  border: 1px solid transparent;
  transition: transform var(--trans-fast), box-shadow var(--trans-mid), background var(--trans-fast);
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: var(--accent-contrast);
  box-shadow: 0 8px 28px rgba(57, 255, 136, 0.34);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  box-shadow: 0 10px 32px rgba(57, 255, 136, 0.5);
}

.btn-secondary {
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.02);
}

.btn-nav {
  min-height: 44px;
  padding: 0.6rem 1rem;
}

.hero {
  position: relative;
  overflow: hidden;
  border-radius: 32px;
  padding: 84px min(6vw, 72px) 72px;
  background:
    radial-gradient(circle at 18% 10%, rgba(57, 255, 136, 0.31), rgba(57, 255, 136, 0) 42%),
    radial-gradient(circle at 85% 8%, rgba(0, 255, 163, 0.22), rgba(0, 255, 163, 0) 44%),
    linear-gradient(160deg, #151515 0%, #121212 46%, #171717 100%);
  box-shadow: var(--shadow-glow);
}

.hero::after {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  right: -110px;
  bottom: -140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 255, 136, 0.35) 0%, rgba(57, 255, 136, 0) 70%);
  pointer-events: none;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 1rem;
  padding: 0.38rem 0.7rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent);
  background: rgba(57, 255, 136, 0.12);
  border: 1px solid rgba(57, 255, 136, 0.36);
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4.7rem);
  line-height: 1.03;
  letter-spacing: -0.02em;
  max-width: 13ch;
}

.hero p {
  max-width: 62ch;
  color: var(--text-soft);
  margin: 1.15rem 0 1.8rem;
  font-size: clamp(1rem, 1.4vw, 1.18rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.3rem;
}

.client-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.client-link {
  background: var(--bg-elev-1);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 0.5rem 0.9rem;
  color: var(--text-soft);
  font-size: 0.92rem;
  transition: border-color var(--trans-fast), color var(--trans-fast);
}

.client-link:hover,
.client-link:focus-visible {
  border-color: rgba(57, 255, 136, 0.7);
  color: var(--text-main);
}

.section-title {
  margin: 0 0 0.75rem;
  font-size: clamp(1.7rem, 3.6vw, 2.7rem);
  letter-spacing: -0.02em;
}

.section-intro {
  margin: 0;
  color: var(--text-soft);
  max-width: 62ch;
}

.feature-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  background: linear-gradient(180deg, #242424 0%, #1b1b1b 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  padding: 1.25rem;
  transition: border-color var(--trans-fast), transform var(--trans-fast);
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(57, 255, 136, 0.55);
}

.icon-badge {
  width: 52px;
  height: 52px;
  border-radius: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(57, 255, 136, 0.11);
  border: 1px solid rgba(57, 255, 136, 0.32);
  margin-bottom: 0.95rem;
}

.icon-badge svg {
  width: 28px;
  height: 28px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.2rem;
}

.card p {
  margin: 0;
  color: var(--text-soft);
}

.page-hero {
  padding: 22px 0 10px;
}

.page-hero h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.4rem);
  letter-spacing: -0.02em;
}

.page-hero p {
  margin: 0.9rem 0 0;
  color: var(--text-soft);
  max-width: 62ch;
}

.article-grid {
  margin-top: 1.8rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.article-card {
  background: linear-gradient(180deg, #252525 0%, #1c1c1c 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.article-card time {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.article-card h2 {
  margin: 0;
  font-size: 1.28rem;
}

.article-card p {
  margin: 0;
  color: var(--text-soft);
  flex: 1;
}

.article-card .read-more {
  margin-top: 0.4rem;
  color: var(--accent);
  font-weight: 700;
}

.platform-grid {
  margin-top: 1.9rem;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.9rem;
}

.platform-card {
  background: linear-gradient(180deg, #242424 0%, #1b1b1b 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: grid;
  gap: 0.55rem;
  transition: border-color var(--trans-fast), transform var(--trans-fast);
}

.platform-card:hover {
  border-color: rgba(57, 255, 136, 0.6);
  transform: translateY(-2px);
}

.platform-card h3 {
  margin: 0;
  font-size: 1.03rem;
}

.platform-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.94rem;
}

.platform-card a {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.92rem;
}

.pagination {
  margin-top: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  min-width: 40px;
  min-height: 40px;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-subtle);
  color: var(--text-soft);
  background: #1a1a1a;
  font-weight: 700;
}

.pagination a:hover,
.pagination a:focus-visible {
  border-color: rgba(57, 255, 136, 0.64);
  color: var(--text-main);
}

.pagination .current {
  color: var(--accent-contrast);
  border-color: rgba(57, 255, 136, 0.82);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.article-shell {
  padding: 36px 0 72px;
}

.article-wrapper {
  max-width: 720px;
  margin: 0 auto;
}

.article-wrapper h1 {
  margin: 0 0 0.8rem;
  font-size: clamp(2rem, 4.5vw, 3rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.article-meta {
  color: var(--text-dim);
  margin-bottom: 1.3rem;
}

.article-wrapper h2 {
  margin: 2rem 0 0.7rem;
  font-size: clamp(1.35rem, 3vw, 2rem);
}

.article-wrapper p,
.article-wrapper li {
  color: var(--text-soft);
  line-height: 1.7;
  font-size: 1.02rem;
}

.article-wrapper ul {
  padding-left: 1.2rem;
  margin: 0.45rem 0 1rem;
}

.conversion-box {
  margin: 1.2rem 0 1.8rem;
  border-radius: var(--radius-md);
  padding: 1.05rem;
  background: linear-gradient(135deg, rgba(57, 255, 136, 0.16), rgba(0, 255, 163, 0.12));
  border: 1px solid rgba(57, 255, 136, 0.6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.conversion-box p {
  margin: 0;
  color: var(--text-main);
  font-weight: 600;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--bg-elev-3);
  margin-top: 84px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr;
  gap: 1.2rem;
  padding: 52px 0 38px;
}

.footer-grid h3 {
  margin: 0 0 0.7rem;
  font-size: 1.08rem;
}

.footer-grid p {
  margin: 0;
  color: var(--text-soft);
  max-width: 60ch;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.footer-links a {
  color: var(--text-soft);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--text-main);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.95rem 0 1.3rem;
  color: var(--text-dim);
  font-size: 0.92rem;
}

@media (max-width: 980px) {
  .feature-grid,
  .article-grid {
    grid-template-columns: 1fr 1fr;
  }

  .platform-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  body {
    padding-top: 74px;
  }

  .header-inner {
    min-height: 74px;
    flex-wrap: wrap;
    padding: 0.7rem 0;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    transition: max-height var(--trans-mid), opacity var(--trans-fast);
  }

  .site-nav.open {
    max-height: 360px;
    opacity: 1;
    pointer-events: auto;
    margin-top: 0.35rem;
    padding-bottom: 0.2rem;
  }

  .site-nav a {
    padding: 0.62rem 0.15rem;
  }

  .site-nav .btn-nav {
    width: 100%;
    margin-top: 0.15rem;
  }

  .hero {
    border-radius: 24px;
    padding: 66px 20px 48px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    padding: 42px 0 30px;
  }
}

@media (max-width: 680px) {
  .section {
    padding: 56px 0;
  }

  .feature-grid,
  .article-grid,
  .platform-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .client-links {
    width: 100%;
  }

  .client-link {
    flex: 1;
    text-align: center;
  }

  .conversion-box {
    padding: 0.95rem;
  }

  .conversion-box .btn {
    width: 100%;
  }
}