/* 91PO 91PORN 官方网站样式 - 91porns.cyou */
:root {
  --primary: #ff6600;
  --primary-dark: #e55a00;
  --bg-dark: #0a0a0a;
  --bg-card: #141414;
  --bg-card-hover: #1e1e1e;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #707070;
  --border: #2a2a2a;
  --gradient: linear-gradient(135deg, #ff6600 0%, #ff9933 100%);
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --radius: 12px;
  --max-width: 1200px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary-dark); text-decoration: underline; }

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

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo-link { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo-link:hover { text-decoration: none; }
.logo-img { width: 48px; height: 48px; border-radius: 10px; }
.logo-text { font-size: 1.4rem; font-weight: 700; color: var(--text-primary); }
.logo-text span { color: var(--primary); }

.nav-main { display: flex; gap: 8px; align-items: center; }
.nav-main a {
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.2s;
}
.nav-main a:hover, .nav-main a.active {
  color: var(--text-primary);
  background: var(--bg-card);
  text-decoration: none;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient);
  color: #fff !important;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none !important;
  box-shadow: 0 4px 16px rgba(255,102,0,0.3);
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255,102,0,0.4);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

.page-header {
  padding: 48px 0 32px;
  background: linear-gradient(180deg, #111 0%, var(--bg-dark) 100%);
  border-bottom: 1px solid var(--border);
}

.page-header h1 { font-size: 2rem; margin-bottom: 8px; }
.page-header .breadcrumb { color: var(--text-muted); font-size: 0.9rem; }
.page-header .breadcrumb a { color: var(--text-secondary); }

.page-body { padding: 48px 0 80px; }

.legal-content h2 { font-size: 1.3rem; margin: 32px 0 12px; color: var(--text-primary); }
.legal-content h3 { font-size: 1.1rem; margin: 24px 0 10px; color: var(--primary); }
.legal-content p, .legal-content li { color: var(--text-secondary); margin-bottom: 12px; }
.legal-content ul, .legal-content ol { margin-left: 24px; margin-bottom: 16px; }

.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
}

.error-code {
  font-size: 8rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
  opacity: 0.8;
}

.error-page h1 { font-size: 1.8rem; margin: 16px 0; }
.error-page p { color: var(--text-secondary); margin-bottom: 32px; max-width: 480px; }

.site-footer {
  background: #080808;
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p { color: var(--text-muted); font-size: 0.9rem; margin-top: 12px; line-height: 1.6; }

.footer-col h4 { font-size: 0.95rem; margin-bottom: 16px; color: var(--text-primary); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--text-muted); font-size: 0.9rem; text-decoration: none; }
.footer-col a:hover { color: var(--primary); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p { color: var(--text-muted); font-size: 0.85rem; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: 0.85rem; text-decoration: none; }
.footer-links a:hover { color: var(--primary); }

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .nav-main {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10,10,10,0.98);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border);
  }
  .nav-main.open { display: flex; }
  .nav-main a { width: 100%; text-align: center; padding: 12px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .error-code { font-size: 5rem; }
}

/* ===== 首页新设计 ===== */
.page-home { background: #060606; }
.home-main { overflow-x: hidden; }

.home-label {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 12px;
}

.home-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 50px;
  background: rgba(255,102,0,0.1);
  border: 1px solid rgba(255,102,0,0.25);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 20px;
}

/* Hero */
.home-hero {
  position: relative;
  padding: 64px 0 48px;
  overflow: hidden;
}

.home-hero-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 75% 40%, rgba(255,102,0,0.14) 0%, transparent 65%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(255,102,0,0.06) 0%, transparent 55%);
  pointer-events: none;
}

.home-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.home-hero-text h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.home-hero-text h1 em {
  font-style: normal;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.home-hero-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.75;
  max-width: 520px;
  margin-bottom: 28px;
}

.home-hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.home-btn-ghost {
  display: inline-flex;
  align-items: center;
  padding: 10px 24px;
  border-radius: 50px;
  border: 1px solid var(--border);
  color: var(--text-secondary) !important;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none !important;
  transition: border-color 0.2s, color 0.2s;
}
.home-btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary) !important;
}

.home-trust {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.home-trust li {
  padding: 14px 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.home-trust strong {
  display: block;
  font-size: 0.88rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.home-trust span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.home-hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  min-height: 480px;
}

.home-phone-frame {
  position: relative;
  z-index: 2;
  width: 260px;
  border-radius: 32px;
  overflow: hidden;
  border: 3px solid #333;
  box-shadow:
    0 0 0 1px rgba(255,102,0,0.15),
    0 32px 80px rgba(0,0,0,0.6),
    0 0 60px rgba(255,102,0,0.08);
  animation: home-float 5s ease-in-out infinite;
}

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

@keyframes home-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.home-float-card {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 8px;
  background: rgba(16,16,16,0.92);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.4);
  backdrop-filter: blur(8px);
}

.home-float-card img {
  width: 72px;
  border-radius: 8px;
  aspect-ratio: 9/16;
  object-fit: cover;
}

.home-float-card span {
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.home-float-a { left: 0; top: 80px; animation: home-float 4s ease-in-out infinite 0.5s; }
.home-float-b { right: 0; bottom: 60px; animation: home-float 4.5s ease-in-out infinite 1s; }

/* 快捷导航 */
.home-quicknav {
  position: sticky;
  top: 73px;
  z-index: 90;
  background: rgba(6,6,6,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.home-quicknav-inner {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding: 10px 0;
  scrollbar-width: none;
}
.home-quicknav-inner::-webkit-scrollbar { display: none; }

.home-quicknav a {
  flex-shrink: 0;
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--text-muted) !important;
  text-decoration: none !important;
  border: 1px solid transparent;
  transition: all 0.2s;
}
.home-quicknav a:hover {
  color: var(--primary) !important;
  border-color: rgba(255,102,0,0.3);
  background: rgba(255,102,0,0.06);
}

/* 区块标题 */
.home-section-header { margin-bottom: 48px; max-width: 640px; }
.home-section-header-center { margin-left: auto; margin-right: auto; text-align: center; }
.home-section-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
}
.home-section-header p { color: var(--text-secondary); line-height: 1.7; }

/* 功能模块 · 交替布局 */
.home-features {
  padding: 80px 0;
  background: #0a0a0a;
}

.home-feature-list { display: flex; flex-direction: column; gap: 32px; }

.home-feature-row {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
  align-items: center;
  padding: 32px;
  background: linear-gradient(135deg, rgba(255,255,255,0.02) 0%, transparent 100%);
  border: 1px solid var(--border);
  border-radius: 20px;
  transition: border-color 0.3s;
}
.home-feature-row:hover { border-color: rgba(255,102,0,0.3); }

.home-feature-reverse { direction: rtl; }
.home-feature-reverse > * { direction: ltr; }

.home-feature-img {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid #333;
  box-shadow: 0 16px 40px rgba(0,0,0,0.35);
  justify-self: center;
  max-width: 220px;
}
.home-feature-img img { width: 100%; aspect-ratio: 9/16; object-fit: cover; }

.home-feature-num {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}

.home-feature-body h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.home-feature-body p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
}

/* 界面预览 · 瀑布网格 */
.home-gallery {
  padding: 80px 0;
  background: #060606;
  border-top: 1px solid var(--border);
}

.home-mosaic {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-auto-rows: 200px;
  gap: 12px;
}

.home-mosaic-item {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
  margin: 0;
  transition: transform 0.25s;
}
.home-mosaic-item:hover { transform: scale(1.02); z-index: 2; }

.home-mosaic-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.home-mosaic-item figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px 10px 10px;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  font-size: 0.78rem;
  color: #ccc;
  text-align: center;
}

.home-mosaic-lg { grid-row: span 2; }
.home-mosaic-wide { grid-column: span 2; }

/* 安装指南 */
.home-install {
  padding: 80px 0;
  background: linear-gradient(180deg, #0d0d0d 0%, #0a0a0a 100%);
  border-top: 1px solid var(--border);
}

.home-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.home-step-card {
  padding: 28px 22px;
  background: #111;
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: border-color 0.25s, transform 0.25s;
}
.home-step-card:hover {
  border-color: rgba(255,102,0,0.4);
  transform: translateY(-4px);
}

.home-step-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 16px;
}

.home-step-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.home-step-card p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.65;
}

.home-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}
.home-tags li {
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 5px 14px;
  border: 1px dashed #333;
  border-radius: 50px;
}

/* 深度指南 */
.home-guide {
  padding: 80px 0;
  background: #060606;
  border-top: 1px solid var(--border);
}

.home-guide-wrap {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  align-items: start;
}

.home-guide-sidebar {
  position: sticky;
  top: 130px;
}

.home-guide-sidebar h2 {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.home-guide-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.home-guide-nav a {
  padding: 9px 14px;
  border-radius: 8px;
  font-size: 0.84rem;
  color: var(--text-muted) !important;
  text-decoration: none !important;
  border-left: 2px solid transparent;
  transition: all 0.2s;
}
.home-guide-nav a:hover {
  color: var(--primary) !important;
  background: rgba(255,102,0,0.06);
  border-left-color: var(--primary);
}

.home-article-block {
  padding: 28px 0 36px;
  margin-bottom: 8px;
  border-bottom: 1px solid #1a1a1a;
}
.home-article-block:last-child { border-bottom: none; }

.home-article-block h3 {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 16px;
  padding-left: 16px;
  border-left: 3px solid var(--primary);
}

.home-article-block p {
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.85;
  text-align: justify;
}

.home-callout {
  margin-top: 20px;
  padding: 18px 22px;
  background: rgba(255,102,0,0.06);
  border: 1px solid rgba(255,102,0,0.2);
  border-radius: 12px;
}
.home-callout p { margin: 0; font-size: 0.92rem; color: var(--text-secondary); }

/* FAQ 手风琴 */
.home-faq {
  padding: 80px 0;
  background: #0a0a0a;
  border-top: 1px solid var(--border);
}

.home-accordion {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.home-accordion-item {
  background: #111;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.home-accordion-item[open] { border-color: rgba(255,102,0,0.35); }

.home-accordion-item summary {
  padding: 18px 22px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}
.home-accordion-item summary::-webkit-details-marker { display: none; }
.home-accordion-item summary::after {
  content: '+';
  font-size: 1.2rem;
  color: var(--primary);
  font-weight: 400;
  transition: transform 0.2s;
}
.home-accordion-item[open] summary::after {
  content: '−';
}

.home-accordion-item p {
  padding: 0 22px 18px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* 底部 CTA */
.home-cta {
  padding: 48px 0;
  background:
    linear-gradient(135deg, rgba(255,102,0,0.1) 0%, transparent 50%),
    #060606;
  border-top: 1px solid rgba(255,102,0,0.15);
}

.home-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 32px 40px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: 20px;
}

.home-cta-text p {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
}

.home-cta-btn { flex-shrink: 0; }

/* 响应式 */
@media (max-width: 1024px) {
  .home-hero-grid { grid-template-columns: 1fr; text-align: center; }
  .home-hero-desc { margin-left: auto; margin-right: auto; }
  .home-hero-btns { justify-content: center; }
  .home-trust { grid-template-columns: repeat(2, 1fr); }
  .home-hero-visual { min-height: 380px; }
  .home-phone-frame { width: 220px; }
  .home-feature-row { grid-template-columns: 1fr; text-align: center; }
  .home-feature-reverse { direction: ltr; }
  .home-feature-img { margin: 0 auto; }
  .home-mosaic { grid-template-columns: repeat(3, 1fr); grid-auto-rows: 180px; }
  .home-mosaic-wide { grid-column: span 1; }
  .home-steps { grid-template-columns: repeat(2, 1fr); }
  .home-guide-wrap { grid-template-columns: 1fr; }
  .home-guide-sidebar { position: static; }
  .home-guide-nav { flex-direction: row; flex-wrap: wrap; }
}

@media (max-width: 768px) {
  .home-hero { padding: 40px 0 32px; }
  .home-trust { grid-template-columns: 1fr 1fr; }
  .home-float-a { left: -10px; }
  .home-float-b { right: -10px; }
  .home-quicknav { top: 65px; }
  .home-features, .home-gallery, .home-install, .home-guide, .home-faq { padding: 56px 0; }
  .home-feature-row { padding: 24px 18px; }
  .home-mosaic { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 160px; }
  .home-mosaic-lg { grid-row: span 1; }
  .home-steps { grid-template-columns: 1fr; }
  .home-cta-inner { flex-direction: column; text-align: center; padding: 28px 20px; }
  .home-cta-btn { width: 100%; justify-content: center; }
  .home-article-block h3 { font-size: 1.15rem; }
}