:root {
  --ink: #1f2428;
  --muted: #5d6a63;
  --soft: #f7f9f6;
  --paper: #ffffff;
  --accent-indigo: #6366f1;
  --accent-sky: #38bdf8;
  --accent-coral: #fb7185;
  --accent-amber: #facc15;
  --accent-teal: #2dd4bf;
  --accent-ink: #111827;
  --line: rgba(31, 36, 40, 0.1);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

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

img {
  max-width: 100%;
}

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 10;
  background: rgba(247, 249, 246, 0.88);
  border-bottom: 1px solid rgba(31, 36, 40, 0.06);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(100% - 40px, var(--max));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
}

.brand-logo {
  width: 34px;
  height: 34px;
  display: block;
  border-radius: 8px;
  box-shadow: 0 10px 24px rgba(17, 24, 39, 0.12);
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: #33423a;
  font-size: 15px;
  font-weight: 800;
}

.menu-button {
  width: 42px;
  height: 42px;
  display: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 20px;
}

.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(248, 250, 252, 0.98) 0%, rgba(248, 250, 252, 0.94) 52%, rgba(239, 246, 255, 0.92) 100%),
    #eef5f1;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(99, 102, 241, 0.08), transparent 42%),
    linear-gradient(45deg, transparent 62%, rgba(251, 113, 133, 0.12) 100%),
    linear-gradient(0deg, rgba(255, 255, 255, 0.44), transparent 64%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
  padding-top: 90px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 380px);
  gap: 56px;
  align-items: center;
}

.eyebrow {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border: 1px solid rgba(99, 102, 241, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  color: var(--accent-indigo);
  font-size: 14px;
  font-weight: 900;
}

.hero h1 {
  max-width: 760px;
  margin: 24px 0 18px;
  font-size: 58px;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 600px;
  margin: 0;
  color: #36463d;
  font-size: 21px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 900;
  line-height: 1.2;
}

.button-primary {
  background: var(--accent-ink);
  color: #fff;
  box-shadow: 0 14px 34px rgba(17, 24, 39, 0.18);
}

.button-secondary {
  border-color: rgba(31, 36, 40, 0.14);
  background: rgba(255, 255, 255, 0.8);
}

.hero-note {
  max-width: 600px;
  margin-top: 22px;
  color: #607066;
  font-size: 14px;
}

.hero-product-panel {
  padding: 28px;
  border: 1px solid rgba(31, 36, 40, 0.08);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 24px 60px rgba(31, 36, 40, 0.1);
}

.panel-label {
  margin: 0 0 18px;
  color: var(--accent-indigo);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.hero-product-main {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.hero-product-logo {
  width: 96px;
  height: 96px;
  border-radius: 20px;
  object-fit: cover;
  box-shadow: 0 18px 34px rgba(31, 36, 40, 0.14);
}

.hero-product-main h2 {
  margin: 0 0 4px;
  font-size: 28px;
  line-height: 1.2;
}

.hero-product-main p {
  margin: 0;
  color: var(--muted);
  font-weight: 800;
}

.hero-product-slots {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.product-slot {
  min-height: 112px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfa;
}

.slot-mark {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-indigo);
  font-size: 13px;
  font-weight: 900;
}

.product-slot:nth-child(2) .slot-mark {
  background: rgba(251, 113, 133, 0.14);
  color: #be123c;
}

.product-slot strong {
  color: var(--ink);
  font-size: 16px;
}

.product-slot small {
  color: var(--muted);
  font-weight: 800;
}

.section {
  padding: 92px 0;
  background: var(--paper);
}

.section.alt {
  background: #eef5f1;
}

.section-inner {
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
}

.proof-section {
  padding: 26px 0;
  background: var(--ink);
  color: #fff;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.proof-item {
  min-height: 98px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.proof-number {
  display: block;
  color: var(--accent-amber);
  font-size: 20px;
  font-weight: 900;
}

.proof-label {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.78);
}

.split-layout,
.company-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.25fr);
  gap: 56px;
  align-items: start;
}

.section-kicker {
  margin: 0 0 10px;
  color: var(--accent-indigo);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.section-title {
  margin: 0;
  font-size: 38px;
  line-height: 1.18;
  letter-spacing: 0;
}

.copy-stack {
  display: grid;
  gap: 16px;
  color: var(--muted);
  font-size: 18px;
}

.copy-stack p {
  margin: 0;
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.focus-card,
.product-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 42px rgba(31, 36, 40, 0.06);
}

.focus-card {
  min-height: 230px;
  padding: 22px;
}

.card-index {
  display: inline-flex;
  margin-bottom: 36px;
  color: var(--accent-indigo);
  font-size: 13px;
  font-weight: 900;
}

.focus-card:nth-child(2) .card-index {
  color: #0284c7;
}

.focus-card:nth-child(3) .card-index {
  color: #be123c;
}

.focus-card:nth-child(4) .card-index {
  color: #0f766e;
}

.focus-card h3,
.product-card h3 {
  margin: 0 0 10px;
  font-size: 21px;
  line-height: 1.28;
}

.focus-card p,
.product-card p {
  margin: 0;
  color: var(--muted);
}

.product-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 18px;
  margin-top: 34px;
}

.product-card-featured {
  min-height: 320px;
  display: flex;
  align-items: center;
}

.product-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 22px;
  padding: 30px;
}

.product-title-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.product-logo {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 10px 24px rgba(31, 36, 40, 0.12);
}

.product-logo-large {
  width: 88px;
  height: 88px;
  border-radius: 18px;
  box-shadow: 0 18px 36px rgba(31, 36, 40, 0.14);
}

.product-title-row p {
  color: var(--accent-indigo);
  font-weight: 900;
}

.product-card-muted {
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  padding: 28px;
  background:
    linear-gradient(150deg, rgba(242, 193, 78, 0.18), rgba(196, 90, 75, 0.1)),
    #fff;
}

.status-pill {
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  margin-bottom: 18px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(250, 204, 21, 0.26);
  color: #854d0e;
  font-size: 13px;
  font-weight: 900;
}

.company-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
}

.company-list div {
  min-height: 96px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.company-list dt {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.company-list dd {
  margin: 0;
  color: var(--ink);
  font-size: 18px;
  font-weight: 900;
}

.site-footer {
  padding: 26px 0;
  background: var(--ink);
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
}

.footer-inner {
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.article-main {
  min-height: 100vh;
  padding: 120px 0 72px;
  background: var(--paper);
}

.article-shell {
  width: min(100% - 40px, 820px);
  margin: 0 auto;
}

.article-shell h1 {
  margin: 24px 0;
  font-size: 44px;
  line-height: 1.18;
  letter-spacing: 0;
}

.article-shell h2 {
  margin: 36px 0 10px;
  font-size: 24px;
}

.article-shell p {
  color: var(--muted);
  font-size: 17px;
}

.back-link {
  color: var(--accent-indigo);
  font-weight: 900;
}

.article-date {
  margin-top: 36px;
}

@media (max-width: 980px) {
  .hero h1 {
    max-width: 600px;
    font-size: 52px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .proof-grid,
  .focus-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split-layout,
  .company-layout,
  .product-grid {
    grid-template-columns: 1fr;
  }

  .product-card-muted {
    min-height: 260px;
  }
}

@media (max-width: 720px) {
  .nav {
    width: min(100% - 28px, var(--max));
  }

  .menu-button {
    display: inline-grid;
    place-items: center;
  }

  .nav-links {
    position: absolute;
    top: 68px;
    right: 14px;
    left: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 18px 42px rgba(31, 36, 40, 0.12);
  }

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

  .nav-links a {
    padding: 12px;
    border-radius: 8px;
  }

  .hero {
    min-height: 92vh;
  }

  .hero-inner,
  .section-inner,
  .footer-inner,
  .article-shell {
    width: min(100% - 28px, var(--max));
  }

  .hero h1 {
    font-size: 40px;
  }

  .hero-lead {
    font-size: 18px;
  }

  .section {
    padding: 68px 0;
  }

  .section-title {
    font-size: 32px;
  }

  .proof-grid,
  .focus-grid,
  .company-list {
    grid-template-columns: 1fr;
  }

  .product-copy,
  .product-card-muted {
    padding: 22px;
  }

  .hero-product-panel {
    padding: 22px;
  }

  .hero-product-main {
    grid-template-columns: 78px minmax(0, 1fr);
  }

  .hero-product-logo {
    width: 78px;
    height: 78px;
    border-radius: 16px;
  }

  .hero-product-slots {
    grid-template-columns: 1fr;
  }

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