/* 重口社官网 zksapp.icu */
:root {
  --bg: #0b0c10;
  --bg-2: #14161d;
  --bg-3: #1c1f2a;
  --card: #1a1d27;
  --text: #e8eaef;
  --text-muted: #9aa0b4;
  --accent: #3ecf6a;
  --accent-hover: #2fb85a;
  --brand-red: #c62828;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --max: 1180px;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  min-height: 100vh;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #7dff9f;
}

ul {
  list-style: none;
}

.container {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 12, 16, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.logo img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.95rem;
}

.nav a:hover,
.nav a.active {
  color: var(--text);
  background: var(--bg-3);
}

.nav .btn-nav {
  background: var(--accent);
  color: #06140a !important;
  font-weight: 700;
  margin-left: 6px;
}

.nav .btn-nav:hover {
  background: var(--accent-hover);
}

.menu-toggle {
  display: none;
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text);
  width: 42px;
  height: 42px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 1.2rem;
}

/* Hero */
.hero {
  position: relative;
  padding: 56px 0 48px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(62, 207, 106, 0.12), transparent),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(198, 40, 40, 0.1), transparent),
    linear-gradient(180deg, #10121a 0%, var(--bg) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.hero-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.hero-brand img {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.hero h1 {
  font-size: clamp(1.75rem, 3.5vw, 2.55rem);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.hero h1 span {
  color: var(--accent);
}

.hero-lead {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 28px;
  max-width: 36em;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #2aa85a);
  color: #06140a;
  box-shadow: 0 8px 24px rgba(62, 207, 106, 0.35);
}

.btn-primary:hover {
  color: #06140a;
  background: linear-gradient(135deg, #55e07e, var(--accent-hover));
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hero-meta strong {
  color: var(--text);
  display: block;
  font-size: 1.15rem;
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  border-radius: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 10% -8% -8% 10%;
  background: radial-gradient(circle, rgba(62, 207, 106, 0.25), transparent 70%);
  z-index: -1;
  filter: blur(20px);
}

/* Sections */
.section {
  padding: 56px 0;
}

.section-alt {
  background: var(--bg-2);
  border-block: 1px solid var(--border);
}

.section-head {
  margin-bottom: 32px;
  max-width: 46em;
}

.section-head .eyebrow {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-head h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  margin-bottom: 12px;
  line-height: 1.3;
}

.section-head p {
  color: var(--text-muted);
}

.prose {
  color: var(--text-muted);
}

.prose p {
  margin-bottom: 1.1em;
}

.prose h2,
.prose h3 {
  color: var(--text);
  margin: 1.6em 0 0.7em;
  line-height: 1.35;
}

.prose h2 {
  font-size: 1.45rem;
}

.prose h3 {
  font-size: 1.2rem;
}

.prose ul,
.prose ol {
  margin: 0 0 1.2em 1.25em;
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin-bottom: 0.45em;
}

.prose strong {
  color: var(--text);
}

/* Feature / screenshot grids */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.feature-card:hover {
  border-color: rgba(62, 207, 106, 0.4);
  transform: translateY(-3px);
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.shot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.shot-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.shot-item:hover {
  transform: translateY(-4px);
  border-color: rgba(62, 207, 106, 0.35);
}

.shot-item img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
  background: #000;
}

.shot-item figcaption {
  padding: 12px 14px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.shot-item figcaption strong {
  display: block;
  color: var(--text);
  margin-bottom: 4px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}

.phone-frame {
  border-radius: 20px;
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #000;
}

.phone-frame img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
}

.steps {
  counter-reset: step;
  display: grid;
  gap: 16px;
}

.step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(62, 207, 106, 0.15);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.step h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.step p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.faq details {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  padding: 16px 18px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  float: right;
  color: var(--accent);
  font-weight: 700;
}

.faq details[open] summary::after {
  content: "−";
}

.faq details p {
  color: var(--text-muted);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.tag-cloud a {
  background: var(--bg-3);
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.9rem;
}

.tag-cloud a:hover {
  color: var(--accent);
  border-color: rgba(62, 207, 106, 0.4);
}

.cta-banner {
  text-align: center;
  padding: 48px 28px;
  background:
    linear-gradient(135deg, rgba(62, 207, 106, 0.12), rgba(198, 40, 40, 0.08)),
    var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
}

.cta-banner h2 {
  margin-bottom: 10px;
}

.cta-banner p {
  color: var(--text-muted);
  margin-bottom: 22px;
}

/* Inner pages */
.page-hero {
  padding: 40px 0 24px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #12141c, var(--bg));
}

.page-hero h1 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin-bottom: 10px;
}

.page-hero p {
  color: var(--text-muted);
  max-width: 40em;
}

.breadcrumb {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.breadcrumb a {
  color: var(--text-muted);
}

.breadcrumb a:hover {
  color: var(--accent);
}

.content-wrap {
  padding: 40px 0 64px;
}

.content-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: clamp(20px, 4vw, 40px);
}

.toc {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 28px;
}

.toc strong {
  display: block;
  margin-bottom: 10px;
}

.toc a {
  display: block;
  color: var(--text-muted);
  padding: 4px 0;
}

.toc a:hover {
  color: var(--accent);
}

/* Error pages */
.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 16px;
}

.error-page .code {
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 12px;
}

.error-page h1 {
  margin-bottom: 12px;
}

.error-page p {
  color: var(--text-muted);
  margin-bottom: 28px;
  max-width: 28em;
  margin-inline: auto;
}

/* Footer */
.site-footer {
  background: #08090c;
  border-top: 1px solid var(--border);
  padding: 40px 0 24px;
  margin-top: 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
  margin-bottom: 28px;
}

.footer-brand {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.footer-brand img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 8px;
}

.footer-col h4 {
  margin-bottom: 12px;
  font-size: 1rem;
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  padding: 4px 0;
  font-size: 0.92rem;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 18px;
  color: var(--text-muted);
  font-size: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: space-between;
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-copy,
.hero-visual {
  animation: fadeUp 0.7s ease both;
}

.hero-visual {
  animation-delay: 0.12s;
}

/* Mobile */
@media (max-width: 960px) {
  .hero-grid,
  .two-col,
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .shot-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-visual img {
    max-width: 280px;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 68px;
    flex-direction: column;
    align-items: stretch;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px;
    box-shadow: var(--shadow);
  }

  .nav.open {
    display: flex;
  }

  .nav .btn-nav {
    margin-left: 0;
    text-align: center;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

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

  .shot-item img {
    aspect-ratio: 3 / 4;
  }

  .hero {
    padding: 36px 0 32px;
  }

  .section {
    padding: 40px 0;
  }

  .cta-group {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}