/* 隐匿对话 (Private Talk) - GitHub Pages Stylesheet
   Compatible with Chrome 83 (Android 10 WebView).
   No flex gap, no aspect-ratio, no pseudo is/where.
   Zero external dependencies, zero fonts, zero scripts. */

:root {
  color-scheme: dark;
  --bg: #150c32;
  --bg-darker: #0e0724;
  --surface: #20134a;
  --surface-card: #27185a;
  --surface-hover: #321f72;
  --line: #3f2a84;
  --line-gold: #ffd050;
  --text: #f4f0ff;
  --text-muted: #af9ce2;
  --text-dim: #886ec9;
  --gold: #ffd050;
  --gold-hover: #ffc21a;
  --gold-glow: rgba(255, 208, 80, 0.18);
  --gold-text: #150c32;
  --green: #3cddb7;
  --red-accent: #ff6e85;
  --font: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--gold);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: #fff;
  text-decoration: underline;
}

h1, h2, h3, h4 {
  color: #fff;
  font-weight: 700;
  line-height: 1.3;
  margin-top: 0;
}

p {
  margin-top: 0;
  margin-bottom: 1rem;
}

p:last-child {
  margin-bottom: 0;
}

code, kbd, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

code {
  background: #1d0f47;
  border: 1px solid #432a8e;
  border-radius: 4px;
  padding: 2px 6px;
  color: #ffd050;
  overflow-wrap: anywhere;
  word-break: break-word;
}

pre {
  background: #170d3a;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  max-width: 100%;
  margin: 1rem 0;
  color: #e9e3ff;
}

pre code {
  background: none;
  border: 0;
  padding: 0;
  color: inherit;
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-all;
  overflow-wrap: anywhere;
}
  padding: 0;
  color: inherit;
  font-size: 13px;
}

/* Header & Nav */
.site-header {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #1c1044 0%, #150c32 100%);
  position: relative;
  z-index: 10;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: #fff;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border: 2px solid var(--gold);
  border-radius: 10px;
  background: #2b1866;
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-right: 12px;
  box-shadow: 0 0 16px var(--gold-glow);
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 18px;
  font-weight: 750;
  letter-spacing: -0.3px;
  color: #fff;
}

.brand-title span {
  color: var(--gold);
}

.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.nav-item {
  display: inline-block;
  padding: 8px 12px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}

.nav-item:hover {
  color: var(--gold);
  text-decoration: none;
}

.nav-badge {
  display: inline-block;
  font-size: 11px;
  padding: 3px 8px;
  background: #2e1a6d;
  border: 1px solid #4a309e;
  border-radius: 12px;
  color: var(--gold);
  margin-left: 8px;
}

.lang-switch {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--gold);
  border-radius: 6px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  margin-left: 10px;
  transition: all 0.15s ease;
}

.lang-switch:hover {
  background: var(--gold);
  color: var(--gold-text);
  text-decoration: none;
}

/* Containers */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 56px 0;
  border-bottom: 1px solid #28195a;
}

.section-alt {
  background: #180e38;
}

.section-head {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 40px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gold);
  background: #2a1663;
  border: 1px solid #492a9c;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 28px;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-muted);
  margin: 0;
}

/* Hero Section */
.hero {
  padding: 50px 0 40px;
  text-align: center;
  position: relative;
  background: radial-gradient(ellipse at 50% 20%, #2e1b6a 0%, #150c32 70%);
  border-bottom: 1px solid var(--line);
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 100%;
  background: #25145b;
  border: 1px solid #492c9f;
  border-radius: 30px;
  padding: 6px 16px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  display: inline-block;
  margin-right: 8px;
}

.hero h1 {
  font-size: 34px;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
}

.hero h1 .highlight {
  color: var(--gold);
  text-shadow: 0 0 24px var(--gold-glow);
}

.hero-lead {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

/* Hero Buttons */
.hero-cta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  max-width: 680px;
  margin: 0 auto 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 650;
  text-decoration: none;
  min-height: 54px;
  cursor: pointer;
  text-align: center;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
  border: 1px solid transparent;
  width: 100%;
}

.btn-primary {
  background: linear-gradient(110deg, #ffc522 0%, #ffd050 100%);
  color: var(--gold-text);
  border-color: #ffd86b;
  box-shadow: 0 4px 20px rgba(255, 208, 80, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(110deg, #ffbc0a 0%, #ffc83b 100%);
  color: #000;
  text-decoration: none;
  box-shadow: 0 6px 26px rgba(255, 208, 80, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: #251659;
  border-color: #ffd050;
  color: #fff;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.btn-secondary:hover {
  background: #341e7a;
  color: var(--gold);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-outline {
  background: #1f1246;
  border-color: #482f94;
  color: var(--text-muted);
}

.btn-outline:hover {
  border-color: var(--gold);
  color: #fff;
  text-decoration: none;
}

.btn-small {
  padding: 8px 16px;
  font-size: 13px;
  min-height: 38px;
  border-radius: 6px;
  width: auto;
}

.hero-quicklinks {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 32px;
}

.hero-quicklinks a {
  color: var(--text-muted);
  margin: 0 6px;
  text-decoration: underline;
}

.hero-quicklinks a:hover {
  color: var(--gold);
}

.hero-banner-wrapper {
  max-width: 980px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.5), 0 0 30px var(--gold-glow);
  background: #110829;
}

.hero-banner-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

/* Grids - using CSS Grid with gap (Supported in Chrome 83) */
.grid-2, .grid-3, .grid-4, .grid-gallery, .footer-grid {
  min-width: 0;
}

.grid-2 > *, .grid-3 > *, .grid-4 > *, .grid-gallery > *, .footer-grid > * {
  min-width: 0;
  max-width: 100%;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.grid-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

/* Cards */
.card {
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  position: relative;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.card:hover {
  border-color: #5d3dae;
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: #351c77;
  border: 1px solid #502ea8;
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
}

.card-title {
  font-size: 19px;
  margin-bottom: 10px;
  color: #fff;
}

.card-title span {
  color: var(--gold);
}

.card-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0;
}

/* Steps */
.step-card {
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  position: relative;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #361b7e;
  border: 2px solid var(--gold);
  color: var(--gold);
  font-weight: 750;
  font-size: 17px;
  margin-bottom: 16px;
  box-shadow: 0 0 12px var(--gold-glow);
}

.step-title {
  font-size: 17px;
  margin-bottom: 10px;
}

.step-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* Tip & Notice Box */
.notice-box {
  background: #21134a;
  border: 1px solid #4a3096;
  border-left: 4px solid var(--gold);
  border-radius: 8px;
  padding: 16px 20px;
  margin-top: 24px;
  font-size: 14px;
  color: #ded6f6;
  line-height: 1.65;
}

.notice-box strong {
  color: var(--gold);
}

.danger-box {
  background: #2b1235;
  border: 1px solid #6b264e;
  border-left: 4px solid var(--red-accent);
  border-radius: 8px;
  padding: 20px;
  margin-top: 24px;
  color: #ebd6e0;
}

.danger-box h4 {
  color: var(--red-accent);
  font-size: 16px;
  margin-bottom: 10px;
}

.danger-box ul {
  margin: 0;
  padding-left: 20px;
}

.danger-box li {
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.6;
}

.danger-box li:last-child {
  margin-bottom: 0;
}

/* Table styling */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  margin-bottom: 24px;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

thead th {
  background: #1b0e40;
  color: var(--gold);
  font-weight: 650;
  padding: 14px 18px;
  border-bottom: 2px solid var(--line);
  white-space: nowrap;
}

tbody td {
  padding: 14px 18px;
  border-bottom: 1px solid #2f1d69;
  color: #dfd6f6;
  vertical-align: top;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover td {
  background: #251656;
}

/* Screenshot gallery */
.shot-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.shot-card:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4), 0 0 16px var(--gold-glow);
  text-decoration: none;
}

.shot-img-wrap {
  width: 100%;
  background: #12092c;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.shot-img-wrap img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.2s ease;
}

.shot-card:hover .shot-img-wrap img {
  transform: scale(1.02);
}

.shot-caption {
  padding: 12px 14px;
  font-size: 13px;
  color: #e5ddfa;
  font-weight: 550;
  line-height: 1.5;
}

.shot-caption small {
  display: block;
  font-size: 11px;
  color: var(--text-dim);
  font-weight: normal;
  margin-top: 4px;
}

/* Downloads cards */
.dl-card {
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.dl-card-head {
  margin-bottom: 14px;
}

.dl-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.dl-badge-ios {
  background: #392178;
  color: #ffc94d;
  border: 1px solid #5733b8;
}

.dl-badge-apk {
  background: #193a40;
  color: #4eedcb;
  border: 1px solid #236569;
}

.dl-badge-pkg {
  background: #3d1c4a;
  color: #f77ceb;
  border: 1px solid #6b2a84;
}

.dl-title {
  font-size: 18px;
  margin-bottom: 6px;
  color: #fff;
}

.dl-meta {
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.dl-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 16px;
}

.dl-actions {
  margin-top: auto;
}

.dl-actions .btn {
  margin-bottom: 8px;
}

.dl-sublinks {
  font-size: 11px;
  color: var(--text-dim);
}

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

/* Deploy grid */
.deploy-card {
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.15s ease;
}

.deploy-card:hover {
  border-color: var(--gold);
}

.deploy-tag {
  font-size: 11px;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 6px;
}

.deploy-title {
  font-size: 17px;
  margin-bottom: 8px;
  color: #fff;
}

.deploy-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 14px;
}

/* Footer */
.site-footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--line);
  padding: 44px 0 32px;
  color: var(--text-muted);
  font-size: 13px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-bottom: 32px;
}

.footer-title {
  color: #fff;
  font-size: 15px;
  font-weight: 650;
  margin-bottom: 12px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--gold);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid #23124d;
  padding-top: 24px;
  text-align: center;
  font-size: 12px;
  color: var(--text-dim);
}

.footer-bottom p {
  margin-bottom: 6px;
}

/* Media Queries for Desktop (Responsive) */
@media (min-width: 640px) {
  .hero h1 {
    font-size: 42px;
  }
  .hero-cta {
    grid-template-columns: 1fr 1fr;
  }
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .hero {
    padding: 70px 0 50px;
  }
  .hero h1 {
    font-size: 48px;
  }
  .section {
    padding: 72px 0;
  }
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
  .grid-gallery {
    grid-template-columns: repeat(4, 1fr);
  }
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}