/* Base reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
}

body {
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color: #111827;
  background-color: #0b1120;
  line-height: 1.6;
}

a {
  color: #2563eb;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: radial-gradient(circle at top, #1f2937 0, #020617 55%, #000 100%);
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

.site-header {
  border-bottom: 1px solid rgba(148,163,184,0.35);
  backdrop-filter: blur(18px);
  background: linear-gradient(to right, rgba(15,23,42,0.96), rgba(15,23,42,0.9));
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 0.75rem 1.25rem;
  max-width: 1120px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: conic-gradient(from 140deg, #f97316, #f43f5e, #6366f1, #22c55e, #f97316);
  position: relative;
  padding: 2px;
}

.logo-mark-inner {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: radial-gradient(circle at 30% 0, #f97316 0, #0f172a 48%, #020617 100%);
  border: 1px solid rgba(15,23,42,0.7);
}

.logo-text-main {
  font-weight: 700;
  letter-spacing: .06em;
  font-size: 0.95rem;
  text-transform: uppercase;
  color: #e5e7eb;
}

.logo-text-sub {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: #9ca3af;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.9rem;
}

.nav a {
  color: #e5e7eb;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid transparent;
}

.nav a:hover {
  border-color: rgba(148,163,184,0.6);
  background-color: rgba(15,23,42,0.9);
}

.nav a.active {
  border-color: rgba(248,250,252,0.7);
  background: radial-gradient(circle at 0 0, rgba(248,250,252,0.12), rgba(15,23,42,0.96));
}

.hero {
  padding-top: 2.2rem;
  padding-bottom: 2.2rem;
  display: grid;
  grid-template-columns: minmax(0,1.3fr) minmax(0,1fr);
  gap: 2.5rem;
  align-items: center;
}

.hero-copy-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.2rem 0.6rem 0.2rem 0.2rem;
  border-radius: 999px;
  background-color: rgba(15,23,42,0.9);
  border: 1px solid rgba(55,65,81,0.9);
  margin-bottom: 1.25rem;
}

.eyebrow-dot {
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 0, #f97316 0, #fb7185 35%, #22c55e 100%);
  box-shadow: 0 0 0 1px rgba(15,23,42,0.9), 0 0 18px rgba(248,113,113,0.55);
}

.eyebrow-text {
  font-size: 0.8rem;
  color: #e5e7eb;
}

.hero h1 {
  font-size: clamp(2.2rem, 2.9vw + 1.2rem, 3.1rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: #f9fafb;
  margin-bottom: 0.9rem;
}

.hero-subtitle {
  font-size: 0.98rem;
  color: #d1d5db;
  max-width: 33rem;
  margin-bottom: 1.6rem;
}

.keyword-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.8rem;
}

.chip {
  font-size: 0.78rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,0.7);
  color: #e5e7eb;
  background: radial-gradient(circle at 0 0, rgba(248,250,252,0.04), rgba(15,23,42,0.95));
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
  margin-bottom: 1.2rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #f97316, #fb7185, #6366f1);
  color: #f9fafb;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  box-shadow: 0 14px 30px rgba(15,23,42,0.85);
}

.btn-primary span {
  font-size: 0.8rem;
  opacity: 0.9;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,0.7);
  color: #e5e7eb;
  background: radial-gradient(circle at 0 0, rgba(248,250,252,0.04), rgba(15,23,42,0.98));
  font-size: 0.9rem;
}

.hero-meta {
  font-size: 0.78rem;
  color: #9ca3af;
}

.hero-meta strong {
  color: #e5e7eb;
}

.hero-media-frame {
  position: relative;
  border-radius: 1.6rem;
  padding: 1px;
  background: conic-gradient(from 120deg, rgba(248,113,113,0.7), rgba(94,234,212,0.7), rgba(129,140,248,0.7), rgba(248,113,113,0.7));
  box-shadow: 0 40px 90px rgba(15,23,42,1);
}

.hero-media-inner {
  border-radius: inherit;
  padding: 1.2rem;
  background: radial-gradient(circle at 0 0, rgba(248,250,252,0.09), rgba(15,23,42,0.98));
  border: 1px solid rgba(15,23,42,0.9);
}

.hero-media-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 0.75rem;
}

.media-card {
  border-radius: 1rem;
  overflow: hidden;
  background: radial-gradient(circle at 0 0, rgba(248,250,252,0.04), rgba(15,23,42,1));
  border: 1px solid rgba(55,65,81,0.8);
  position: relative;
}

.media-card img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  filter: saturate(1.1) contrast(1.05);
}

.media-card-footer {
  padding: 0.55rem 0.7rem 0.7rem;
}

.media-label {
  font-size: 0.75rem;
  color: #e5e7eb;
}

.media-meta {
  font-size: 0.7rem;
  color: #9ca3af;
}

.section {
  padding: 2.4rem 0 0;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1.4rem;
  gap: 1.25rem;
}

.section-title {
  font-size: 1.25rem;
  color: #f9fafb;
}

.section-subtitle {
  font-size: 0.88rem;
  color: #9ca3af;
  max-width: 32rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 1.4rem;
}

.card {
  border-radius: 1rem;
  background: radial-gradient(circle at 0 0, rgba(248,250,252,0.02), rgba(15,23,42,0.98));
  border: 1px solid rgba(55,65,81,0.9);
  padding: 1.1rem 1rem 1.1rem;
}

.card h3 {
  font-size: 1rem;
  color: #e5e7eb;
  margin-bottom: 0.4rem;
}

.card p {
  font-size: 0.86rem;
  color: #9ca3af;
  margin-bottom: 0.5rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(55,65,81,0.9);
  font-size: 0.7rem;
  color: #d1d5db;
  margin-top: 0.2rem;
}

.pill-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: #22c55e;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 1.2rem;
}

.step {
  border-radius: 0.9rem;
  border: 1px solid rgba(55,65,81,0.9);
  padding: 0.85rem 0.9rem;
  background: radial-gradient(circle at 0 0, rgba(148,163,184,0.08), rgba(15,23,42,0.98));
}

.step-index {
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,0.9);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: #e5e7eb;
  margin-bottom: 0.45rem;
}

.step h3 {
  font-size: 0.9rem;
  color: #e5e7eb;
  margin-bottom: 0.3rem;
}

.step p {
  font-size: 0.8rem;
  color: #9ca3af;
}

.two-column {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.2rem;
}

.list {
  list-style: none;
}

.list li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.45rem;
  font-size: 0.84rem;
  color: #9ca3af;
}

.list li::before {
  content: "";
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(135deg, #f97316, #22c55e);
  left: 0;
  top: 0.42rem;
}

.muted {
  color: #6b7280;
  font-size: 0.78rem;
}

.page-main {
  flex: 1;
}

.page-content {
  max-width: 760px;
  margin-top: 2rem;
}

.page-content h1 {
  font-size: 1.7rem;
  color: #f9fafb;
  margin-bottom: 0.5rem;
}

.page-content h2 {
  font-size: 1.1rem;
  color: #e5e7eb;
  margin: 1.5rem 0 0.5rem;
}

.page-content p {
  font-size: 0.9rem;
  color: #9ca3af;
  margin-bottom: 0.7rem;
}

.page-content ul {
  margin: 0.4rem 0 0.8rem 1.2rem;
}

.page-content li {
  font-size: 0.88rem;
  color: #9ca3af;
  margin-bottom: 0.3rem;
}

.breadcrumbs {
  font-size: 0.78rem;
  color: #6b7280;
  margin-top: 1.2rem;
}

.breadcrumbs a {
  color: #9ca3af;
}

.footer {
  border-top: 1px solid rgba(31,41,55,0.95);
  padding: 1.2rem 1.25rem 1.8rem;
  font-size: 0.78rem;
  color: #6b7280;
  background: radial-gradient(circle at 0 0, rgba(248,250,252,0.03), rgba(15,23,42,1));
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(55,65,81,0.9);
  font-size: 0.72rem;
  color: #9ca3af;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: #22c55e;
}

.status-label {
  font-size: 0.75rem;
  color: #9ca3af;
  margin-top: 0.2rem;
}

.error-page {
  text-align: center;
  padding-top: 3rem;
}

.error-code {
  font-size: 3.2rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #f97316;
  margin-bottom: 0.8rem;
}

.error-title {
  font-size: 1.3rem;
  color: #f9fafb;
  margin-bottom: 0.7rem;
}

.error-desc {
  font-size: 0.9rem;
  color: #9ca3af;
  margin-bottom: 1.4rem;
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #6b7280;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: minmax(0,1fr);
  }

  .two-column {
    grid-template-columns: minmax(0,1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0,1fr));
  }

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

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding-top: 1.7rem;
  }

  .hero-media-inner {
    padding: 0.9rem;
  }

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

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