/* ==========================================================================
   Clash Verge 官方网站 - 黑白极简风格样式表 (Monochrome Minimalist Download Theme)
   ========================================================================== */

:root {
  --bg-black: #09090b;
  --bg-surface: #121215;
  --bg-surface-hover: #1c1c21;
  --bg-header: rgba(9, 9, 11, 0.94);
  --border-subtle: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.28);
  --border-focus: #ffffff;
  --text-white: #ffffff;
  --text-muted: #a1a1aa;
  --text-dim: #71717a;
  --accent-contrast: #ffffff;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --max-w: 1180px;
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-white);
  background-color: var(--bg-black);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-black);
  background-image: 
    radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 28px 28px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

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

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Minimal Top Indicator */
.minimal-topbar {
  background: #000000;
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.45rem 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.minimal-topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.minimal-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #ffffff;
  font-weight: 600;
}

.mono-indicator {
  width: 6px;
  height: 6px;
  background: #ffffff;
  border-radius: 50%;
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.8);
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-header);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.mono-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: #ffffff;
  color: #000000;
  border-radius: var(--radius-xs);
  font-weight: 900;
  font-size: 1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-item {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.35rem 0;
  position: relative;
}

.nav-item:hover,
.nav-item.active {
  color: #ffffff;
}

.nav-item.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: #ffffff;
}

.nav-btn-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: #ffffff;
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius-xs);
  cursor: pointer;
  font-size: 1.15rem;
}

/* Minimalist High-Contrast Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.72rem 1.6rem;
  border-radius: var(--radius-xs);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
}

.btn-primary:hover {
  background: #e4e4e7;
  color: #000000;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
}

.btn-secondary {
  background: transparent;
  color: #ffffff;
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #ffffff;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.42rem 1rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 0.9rem 2.2rem;
  font-size: 1.05rem;
}

/* Hero Section */
.hero-section {
  padding: 5rem 0 4rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-xs);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-heading {
  font-size: 3.6rem;
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.04em;
  color: #ffffff;
  margin-bottom: 1.25rem;
}

.hero-desc {
  font-size: 1.12rem;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero-desc strong {
  color: #ffffff;
}

/* Minimalist Preview Box */
.mono-preview-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
  transition: var(--transition);
}

.mono-preview-card:hover {
  border-color: var(--border-strong);
}

.mono-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.25rem;
  background: #0d0d10;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

/* Data Endorsement Bar */
.endorsement-section {
  padding: 2.75rem 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: #0c0c0e;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.stat-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 1.5rem 1.25rem;
  text-align: center;
  transition: var(--transition);
}

.stat-box:hover {
  border-color: var(--border-strong);
  background: var(--bg-surface-hover);
  transform: translateY(-3px);
}

.stat-val {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #ffffff;
  margin-bottom: 0.25rem;
}

.stat-tit {
  font-size: 0.92rem;
  font-weight: 600;
  color: #e4e4e7;
  margin-bottom: 0.2rem;
}

.stat-inf {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Common Section */
.section {
  padding: 5rem 0;
  position: relative;
}

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}

.section-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-xs);
  margin-bottom: 0.85rem;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #ffffff;
  margin-bottom: 0.85rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Feature Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: var(--transition);
}

.feature-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-surface-hover);
  transform: translateY(-4px);
}

.feature-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-xs);
  background: #09090b;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.25rem;
}

.feature-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
}

.feature-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.feature-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: auto;
  padding-top: 0.85rem;
}

.chip {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-xs);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-dim);
  border: 1px solid var(--border-subtle);
}

/* Showcase Row */
.showcase-row {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3.5rem;
  align-items: center;
  margin-bottom: 4rem;
}

.showcase-row.reverse {
  grid-template-columns: 0.95fr 1.05fr;
}

.showcase-content h3 {
  font-size: 1.85rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1rem;
}

.showcase-content p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-size: 0.98rem;
}

.mono-checklist {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.mono-check-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  color: #e4e4e7;
}

.mono-check-item svg {
  color: #ffffff;
  flex-shrink: 0;
  margin-top: 3px;
}

/* Multi-Platform Matrix */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
}

.platform-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.75rem 1.15rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  transition: var(--transition);
}

.platform-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-surface-hover);
  transform: translateY(-4px);
}

.platform-icon-circle {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-xs);
  background: #09090b;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  border: 1px solid var(--border-subtle);
}

.platform-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
}

.platform-meta {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.platform-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.18rem 0.55rem;
  border-radius: var(--radius-xs);
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1px solid var(--border-subtle);
}

/* FAQ Grid */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 1040px;
  margin: 0 auto;
}

.faq-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 1.6rem;
  transition: var(--transition);
}

.faq-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-surface-hover);
}

.faq-q {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.faq-q .q-tag {
  color: #ffffff;
  font-weight: 900;
}

.faq-a {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Minimalist CTA Banner */
.mono-cta-banner {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 4rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 1rem;
}

.cta-desc {
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 2rem;
}

/* Inner Page Hero */
.page-hero {
  padding: 4.5rem 0 3.5rem;
  text-align: center;
  background: #09090b;
  border-bottom: 1px solid var(--border-subtle);
}

.page-hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

.page-hero p {
  font-size: 1.12rem;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 1.5rem;
}

/* Download Matrix Grid */
.dl-matrix-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.dl-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.dl-card.featured {
  border-color: #ffffff;
}

.dl-hot-badge {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: #ffffff;
  color: #000000;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-xs);
  text-transform: uppercase;
}

.dl-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1.25rem;
}

.dl-card-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-xs);
  background: #09090b;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.dl-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
}

.dl-card-sub {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.dl-specs-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.dl-spec-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  background: #0c0c0e;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  font-size: 0.85rem;
}

.dl-spec-k {
  color: var(--text-muted);
}

.dl-spec-v {
  color: #ffffff;
  font-weight: 600;
  font-family: var(--font-mono);
}

.dl-btn-group {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

/* Steps Cards */
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 920px;
  margin: 0 auto;
}

.step-box {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 1.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 2rem;
  transition: var(--transition);
}

.step-box:hover {
  border-color: var(--border-strong);
  background: var(--bg-surface-hover);
}

.step-idx {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xs);
  background: #ffffff;
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 900;
}

.step-main h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.step-main p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.step-code-bar {
  background: #000000;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 0.85rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #ffffff;
  overflow-x: auto;
  margin-top: 0.75rem;
}

.step-pic-box {
  margin-top: 1.25rem;
  border-radius: var(--radius-xs);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

/* Minimal Comparison Matrix */
.table-responsive-box {
  width: 100%;
  overflow-x: auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.mono-compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.mono-compare-table th,
.mono-compare-table td {
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.mono-compare-table th {
  background: #000000;
  color: #ffffff;
  font-weight: 700;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mono-compare-table tr:last-child td {
  border-bottom: none;
}

.mono-compare-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.color-highlight { color: #ffffff; font-weight: 700; }
.color-dim { color: var(--text-dim); }

/* Footer */
.site-footer {
  margin-top: auto;
  background: #000000;
  border-top: 1px solid var(--border-subtle);
  padding: 4.5rem 0 2rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr);
  gap: 2.5rem;
  margin-bottom: 3.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-brand p {
  color: var(--text-dim);
  line-height: 1.6;
  font-size: 0.85rem;
}

.footer-col h4 {
  font-size: 0.92rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1.25rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

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

.footer-links a:hover {
  color: #ffffff;
  transform: translateX(3px);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

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

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .platforms-grid { grid-template-columns: repeat(3, 1fr); }
  .dl-matrix-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .mobile-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: #09090b;
    flex-direction: column;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-subtle);
    gap: 1rem;
  }
  .nav-links.active { display: flex; }
  .hero-heading { font-size: 2.4rem; }
  .features-grid { grid-template-columns: 1fr; }
  .platforms-grid { grid-template-columns: repeat(2, 1fr); }
  .faq-grid { grid-template-columns: 1fr; }
  .dl-matrix-grid { grid-template-columns: 1fr; }
  .showcase-row, .showcase-row.reverse { grid-template-columns: 1fr; gap: 2rem; }
  .step-box { grid-template-columns: 1fr; gap: 1rem; }
  .step-idx { width: 44px; height: 44px; font-size: 1.2rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}