/* DL World · 推广落地页共享样式（轻量，与 hire 视觉对齐） */
:root {
  --void: #050810;
  --deep: #080d1a;
  --surface: #0c1224;
  --panel: #101830;
  --raised: #151f3a;
  --border: #1e2d50;
  --border2: #2a3d6a;
  --dl: #e8c840;
  --dl-glow: #e8c84045;
  --green: #44ff88;
  --blue: #00d4ff;
  --purple: #b36bff;
  --red: #ff4466;
  --bright: #eef4ff;
  --text: #8a9dc0;
  --text2: #4a5a80;
  --font-ui: "Exo 2", sans-serif;
  --font-mono: "Share Tech Mono", monospace;
  --font-title: Orbitron, sans-serif;
  --wrap: 1100px;
  --ease: cubic-bezier(0.22, 0.8, 0.3, 1);
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-ui);
  background: var(--void);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 500px at 12% -8%, rgba(232, 200, 64, 0.07), transparent 55%),
    radial-gradient(700px 400px at 92% 10%, rgba(0, 212, 255, 0.06), transparent 50%);
}
a {
  color: inherit;
  text-decoration: none;
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 22px;
  height: 56px;
  background: rgba(5, 8, 16, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border2);
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--bright);
}
.brand .mark {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--dl), #b89a20);
  color: var(--void);
  font-size: 14px;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}
.brand span {
  color: var(--dl);
}
.topbar nav {
  margin-left: auto;
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.topbar nav a {
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text2);
  border: 1px solid transparent;
  border-radius: 2px;
  transition: 0.2s var(--ease);
}
.topbar nav a:hover {
  color: var(--bright);
  border-color: var(--border2);
  background: var(--raised);
}
.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 22px;
}
.lp-hero {
  padding: 56px 0 48px;
}
.kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--dl);
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 14px;
  display: block;
}
h1 {
  font-family: var(--font-title);
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 800;
  color: var(--bright);
  letter-spacing: 0.5px;
  line-height: 1.12;
  margin-bottom: 18px;
}
h1 em {
  font-style: normal;
  color: var(--dl);
}
.lead {
  font-size: 17px;
  color: var(--text);
  max-width: 620px;
  margin-bottom: 28px;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font-title);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px solid var(--border2);
  cursor: pointer;
  transition: 0.2s var(--ease);
}
.btn.primary {
  background: var(--dl);
  color: var(--void);
  border-color: var(--dl);
}
.btn.primary:hover {
  box-shadow: 0 6px 28px var(--dl-glow);
  transform: translateY(-1px);
}
.btn.ghost {
  color: var(--bright);
  background: transparent;
}
.btn.ghost:hover {
  border-color: var(--dl);
  color: var(--dl);
}
.bullets {
  display: grid;
  gap: 10px;
  max-width: 560px;
  margin-bottom: 40px;
}
.bullets li {
  list-style: none;
  padding-left: 22px;
  position: relative;
  font-size: 15px;
  color: var(--text);
}
.bullets li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-size: 13px;
}
.lp-section {
  padding: 48px 0;
  border-top: 1px solid var(--border);
}
.lp-section h2 {
  font-family: var(--font-title);
  font-size: clamp(20px, 3vw, 28px);
  color: var(--bright);
  margin-bottom: 12px;
}
.lp-section .sub {
  font-size: 15px;
  color: var(--text2);
  margin-bottom: 22px;
  max-width: 640px;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 20px;
  transition: 0.2s var(--ease);
}
.card:hover {
  border-color: var(--border2);
  transform: translateY(-2px);
}
.card .ic {
  font-size: 28px;
  margin-bottom: 10px;
}
.card h3 {
  font-family: var(--font-title);
  font-size: 15px;
  color: var(--bright);
  margin-bottom: 8px;
}
.card p {
  font-size: 13px;
  color: var(--text);
  line-height: 1.55;
}
.final-bar {
  padding: 44px 0;
  text-align: center;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, var(--deep), var(--void));
}
.final-bar h2 {
  font-family: var(--font-title);
  font-size: 22px;
  color: var(--bright);
  margin-bottom: 10px;
}
.final-bar p {
  font-size: 14px;
  color: var(--text2);
  margin-bottom: 20px;
}
footer.lp-foot {
  padding: 36px 0 28px;
  border-top: 1px solid var(--border2);
  font-size: 12px;
  color: var(--text2);
}
footer.lp-foot .grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: start;
}
footer.lp-foot a {
  color: var(--dl);
}
footer.lp-foot a:hover {
  text-decoration: underline;
}
.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  padding: 32px 0 48px;
}
.hub-card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: 0.2s var(--ease);
}
.hub-card:hover {
  border-color: var(--dl);
}
.hub-card .tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--dl);
  letter-spacing: 1px;
}
.hub-card h3 {
  font-family: var(--font-title);
  font-size: 16px;
  color: var(--bright);
}
.hub-card p {
  font-size: 13px;
  color: var(--text);
  flex: 1;
}
.hub-card a.go {
  align-self: flex-start;
  margin-top: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--dl);
}
@media (max-width: 640px) {
  .topbar nav {
    display: none;
  }
  footer.lp-foot .grid {
    grid-template-columns: 1fr;
  }
}