/* 91PORN 官网下载安装中心 - 91pors.click */
:root {
  --primary: #ff6600;
  --primary-dark: #e55a00;
  --primary-soft: rgba(255,102,0,0.12);
  --bg-dark: #0a0a0a;
  --bg-card: #141414;
  --bg-card-hover: #1a1a1a;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #707070;
  --border: #2a2a2a;
  --gradient: linear-gradient(135deg, #ff6600 0%, #ff9933 100%);
  --radius: 12px;
  --max-width: 1180px;
}

*, *::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(10,10,10,0.96);
  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: 1.35rem; font-weight: 700; color: var(--text-primary); }
.logo-text span { color: var(--primary); }

.nav-main { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.nav-main a {
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.92rem;
  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: 11px 26px;
  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; margin-left: auto; margin-right: auto; }

.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); }

/* ===== 首页 ===== */
.page-home { background: #080808; }
.ix-main { overflow-x: hidden; }

.ix-label {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 12px;
}

.ix-hero {
  position: relative;
  padding: 56px 0 64px;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.ix-hero-grid {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 50%, rgba(255,102,0,0.06) 0%, transparent 45%),
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255,255,255,0.015) 39px, rgba(255,255,255,0.015) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255,255,255,0.015) 39px, rgba(255,255,255,0.015) 40px);
  pointer-events: none;
}

.ix-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.ix-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }

.ix-badge {
  font-size: 0.78rem;
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: rgba(20,20,20,0.8);
}

.ix-badge-live {
  border-color: rgba(255,102,0,0.5);
  color: var(--primary);
  background: var(--primary-soft);
}

.ix-hero h1 {
  font-size: clamp(1.85rem, 4.2vw, 2.75rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.ix-hero h1 span {
  display: block;
  margin-top: 6px;
  font-size: 0.65em;
  font-weight: 700;
  color: var(--primary);
}

.ix-lead {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.85;
  max-width: 520px;
  margin-bottom: 26px;
}

.ix-hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 32px; }

.ix-btn-ghost {
  display: inline-flex;
  align-items: center;
  padding: 11px 22px;
  border-radius: 50px;
  border: 1px solid var(--border);
  color: var(--text-secondary) !important;
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none !important;
  transition: border-color 0.2s, color 0.2s;
}

.ix-btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary) !important;
}

.ix-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  list-style: none;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  max-width: 520px;
}

.ix-stats li {
  background: var(--bg-card);
  padding: 14px 12px;
  text-align: center;
}

.ix-stats strong { display: block; font-size: 0.82rem; color: var(--text-primary); margin-bottom: 2px; }
.ix-stats span { font-size: 0.72rem; color: var(--text-muted); }

.ix-hero-phones {
  position: relative;
  height: 400px;
  min-width: 280px;
}

.ix-phone {
  position: absolute;
  border-radius: 22px;
  overflow: hidden;
  border: 2px solid #333;
  box-shadow: 0 16px 48px rgba(0,0,0,0.55);
  background: #111;
}

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

.ix-phone-center {
  width: 210px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  border-color: rgba(255,102,0,0.35);
}

.ix-phone-bar {
  height: 22px;
  background: #1a1a1a;
  border-bottom: 1px solid #333;
}

.ix-phone-left {
  width: 120px;
  left: 0;
  bottom: 20px;
  transform: rotate(-12deg);
  z-index: 2;
  opacity: 0.85;
}

.ix-phone-right {
  width: 120px;
  right: 0;
  top: 30px;
  transform: rotate(10deg);
  z-index: 1;
  opacity: 0.85;
}

.ix-jump {
  position: sticky;
  top: 73px;
  z-index: 50;
  background: rgba(8,8,8,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.ix-jump-inner {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 10px 0;
  scrollbar-width: none;
}

.ix-jump-inner::-webkit-scrollbar { display: none; }

.ix-jump-inner a {
  flex-shrink: 0;
  padding: 7px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--text-muted) !important;
  font-size: 0.84rem;
  text-decoration: none !important;
  white-space: nowrap;
  transition: all 0.2s;
}

.ix-jump-inner a:hover {
  border-color: var(--primary);
  color: var(--primary) !important;
  background: var(--primary-soft);
}

.ix-block { padding: 72px 0; }
.ix-block-dark { background: #0a0a0a; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.ix-head { margin-bottom: 44px; }
.ix-head h2 { font-size: 1.85rem; font-weight: 800; margin-bottom: 12px; }
.ix-head p { color: var(--text-secondary); max-width: 600px; line-height: 1.75; }
.ix-head-center { text-align: center; }
.ix-head-center p { margin: 0 auto; }

.ix-feature-list { display: flex; flex-direction: column; gap: 48px; }

.ix-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.ix-feature-reverse .ix-feature-img { order: 2; }
.ix-feature-reverse .ix-feature-body { order: 1; }

.ix-feature-img {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
  max-width: 280px;
  margin: 0 auto;
  width: 100%;
}

.ix-feature-img img { width: 100%; aspect-ratio: 9/16; object-fit: cover; }

.ix-feature-num {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}

.ix-feature-body h3 { font-size: 1.25rem; font-weight: 800; margin-bottom: 12px; }
.ix-feature-body p { color: var(--text-secondary); line-height: 1.75; font-size: 0.95rem; }

.ix-scroll-wrap { overflow: hidden; }

.ix-scroll-track {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 4px 20px 24px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--primary) #1a1a1a;
}

.ix-scroll-track::-webkit-scrollbar { height: 5px; }
.ix-scroll-track::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

.ix-scroll-item {
  flex: 0 0 156px;
  scroll-snap-align: start;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: transform 0.2s;
}

.ix-scroll-item:hover { transform: scale(1.03); }
.ix-scroll-item img { width: 100%; aspect-ratio: 9/16; object-fit: cover; }
.ix-scroll-item figcaption {
  padding: 9px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

.ix-install-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: start;
}

.ix-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin-top: 20px;
}

.ix-tags li {
  font-size: 0.78rem;
  color: var(--text-muted);
  border: 1px dashed #333;
  padding: 5px 12px;
  border-radius: 4px;
}

.ix-timeline {
  list-style: none;
  position: relative;
  padding-left: 36px;
}

.ix-timeline::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary) 0%, rgba(255,102,0,0.15) 100%);
}

.ix-timeline li {
  position: relative;
  padding-bottom: 28px;
}

.ix-timeline li:last-child { padding-bottom: 0; }

.ix-timeline-dot {
  position: absolute;
  left: -36px;
  top: 4px;
  width: 32px;
  height: 32px;
  background: var(--bg-dark);
  border: 2px solid var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
}

.ix-timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 24px;
  transition: border-color 0.2s;
}

.ix-timeline-card:hover { border-color: rgba(255,102,0,0.35); }
.ix-timeline-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.ix-timeline-card p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; margin: 0; }

.ix-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 36px;
}

.ix-chips a {
  padding: 7px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--text-muted) !important;
  font-size: 0.84rem;
  text-decoration: none !important;
  transition: all 0.2s;
}

.ix-chips a:hover {
  border-color: var(--primary);
  color: var(--primary) !important;
  background: var(--primary-soft);
}

.ix-article section {
  padding: 28px 0;
  border-bottom: 1px solid #1a1a1a;
}

.ix-article section:last-child { border-bottom: none; }

.ix-article h3 {
  font-size: 1.28rem;
  font-weight: 800;
  margin-bottom: 14px;
}

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

.ix-callout {
  margin-top: 16px;
  padding: 18px 22px;
  background: var(--primary-soft);
  border: 1px solid rgba(255,102,0,0.25);
  border-radius: 10px;
}

.ix-callout p { margin: 0; font-size: 0.92rem; }

.ix-faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.ix-faq {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.ix-faq summary {
  padding: 18px 20px;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  list-style: none;
}

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

.ix-faq p {
  padding: 0 20px 18px;
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.65;
  margin: 0;
}

.ix-cta {
  padding: 48px 0;
  background: linear-gradient(135deg, rgba(255,102,0,0.12) 0%, rgba(255,102,0,0.02) 50%, transparent 100%);
  border-top: 1px solid rgba(255,102,0,0.12);
}

.ix-cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px 40px;
}

.ix-cta-text h2 { font-size: 1.2rem; font-weight: 700; margin-bottom: 6px; }
.ix-cta-text p { color: var(--text-muted); font-size: 0.9rem; margin: 0; }

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ix-hero-inner { grid-template-columns: 1fr; }
  .ix-hero-phones { height: 340px; max-width: 320px; margin: 0 auto; }
  .ix-stats { max-width: 100%; }
  .ix-install-layout { grid-template-columns: 1fr; gap: 36px; }
  .ix-faq-grid { grid-template-columns: 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; }
  .ix-hero { padding: 36px 0 44px; }
  .ix-jump { top: 65px; }
  .ix-stats { grid-template-columns: repeat(2, 1fr); }
  .ix-feature, .ix-feature-reverse { grid-template-columns: 1fr; }
  .ix-feature-reverse .ix-feature-img,
  .ix-feature-reverse .ix-feature-body { order: unset; }
  .ix-feature-img { max-width: 220px; }
  .ix-scroll-item { flex: 0 0 130px; }
  .ix-cta-box { flex-direction: column; text-align: center; padding: 28px 24px; }
  .ix-cta-box .btn-download { width: 100%; justify-content: center; }
}