/* SmartLottery 下载页 — 与 SmartLottery-frontend 设计语言保持一致 */
:root {
  --color-primary: #4CAF7D;
  --color-primary-hover: #3E9A6B;
  --color-primary-rgb: 76, 175, 125;
  --color-secondary: #F59E0B;
  --color-accent: #4FA9DB;
  --color-danger: #E5484D;
  --color-bg: #FFFFFF;
  --color-surface: #F3F6F3;
  --color-surface-soft: #FBFCFB;
  --color-border: rgba(15, 23, 42, .06);
  --color-text-primary: #1A1F1C;
  --color-text-body: #2A2F2C;
  --color-text-muted: #6B7B72;

  --font-family: 'Inter', 'Harmony Sans', -apple-system, BlinkMacSystemFont,
    'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Menlo, Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, .06);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, .08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  min-height: 100vh;
  font-family: var(--font-family);
  color: var(--color-text-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
}

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

/* 与 frontend 一致的 radial 背景, 绿 + 蓝角 */
body {
  background-color: var(--color-surface);
  background-image:
    radial-gradient(at 0% 0%, rgba(76, 175, 125, .10), transparent 50%),
    radial-gradient(at 100% 0%, rgba(79, 169, 219, .10), transparent 50%);
  background-attachment: fixed;
  overscroll-behavior-y: contain;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); }

h1, h2, h3, h4 {
  margin: 0;
  color: var(--color-text-primary);
  font-weight: 600;
}

/* ===== Header ===== */
.app-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
}
/* 顶部 header 的"立即下载"按钮隐藏 — 主下载按钮已在 hero 区, 顶部重复 */
/* 想恢复: 注释掉这条 */
.app-header .linear-button { display: none !important; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-img {
  width: 38px; height: 38px;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  object-fit: cover;
}
.logo-text { display: flex; align-items: center; gap: 8px; }
.logo-text h3 { font-size: 16px; line-height: 1; }
.version-tag {
  font-size: 11px;
  font-family: var(--font-mono);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(76, 175, 125, .12);
  color: var(--color-primary);
  font-weight: 500;
}

/* ===== Layout ===== */
.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 20px 80px;
  display: flex; flex-direction: column; gap: 40px;
}

/* ===== Linear button ===== */
.linear-button {
  display: inline-flex;
  align-items: center; justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .15s ease, background-color .15s ease, color .15s ease, box-shadow .15s ease;
  text-decoration: none;
  font-family: inherit;
  white-space: nowrap;
  user-select: none;
}
.linear-button:active { transform: scale(.97); }

.linear-button.primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(76, 175, 125, .28);
}
.linear-button.primary:hover {
  box-shadow: 0 6px 18px rgba(76, 175, 125, .36);
  color: #FFFFFF;
}

.linear-button.sm { padding: 8px 14px; font-size: 13px; }
.linear-button.lg { padding: 14px 22px; font-size: 16px; }
.linear-button.block { display: flex; width: 100%; }

/* ===== Linear card ===== */
.linear-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
}
.linear-card.is-compact { padding: 16px; }

/* ===== Glass panel (hero) ===== */
.glass-panel {
  background: rgba(255, 255, 255, .72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, .6);
  box-shadow: var(--shadow-lg);
}

/* ===== Hero ===== */
.hero { scroll-margin-top: 80px; }
.hero-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  align-items: center;
  padding: 28px;
  border-radius: var(--radius-xl);
}
/* 桌面端 (>720px) 把 hero-qr 加成第 3 列 */
@media (min-width: 720px) {
  .hero-card {
    grid-template-columns: 120px 1fr auto;
    column-gap: 28px;
  }
}
.hero-icon {
  width: 120px; height: 120px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(15, 23, 42, .18);
  background: #FFFFFF;
}
.hero-icon img { width: 100%; height: 100%; object-fit: contain; padding: 4px; }

.hero-text { display: flex; flex-direction: column; gap: 12px; }
.hero-title { font-size: 28px; line-height: 1.2; letter-spacing: -.02em; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-desc { font-size: 14px; color: var(--color-text-muted); margin: 0; }
.hero-actions { display: flex; flex-direction: column; gap: 12px; margin-top: 4px; }
.hero-actions > .linear-button { margin: 0; }
.hero-hint {
  font-size: 12px; color: var(--color-text-muted); margin: 0;
}

/* hero 右侧二维码块 */
.hero-qr {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .55);
  border: 1px solid rgba(76, 175, 125, .18);
  justify-self: center;
}
.hero-qr .qr-frame {
  width: 140px; height: 140px;
  padding: 6px;
  background: #FFFFFF;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(15, 23, 42, .08);
}
.hero-qr .qr-frame img { width: 100%; height: 100%; display: block; }
.hero-qr .qr-caption {
  display: flex; align-items: center; gap: 5px;
  font-size: 13px; font-weight: 600;
  color: var(--color-text);
  margin: 4px 0 0 0;
}
.hero-qr .qr-caption svg { color: var(--color-primary); }
.hero-qr .qr-hint {
  font-size: 11px;
  color: var(--color-text-muted);
  text-align: center;
  margin: 0;
  line-height: 1.4;
  opacity: .8;
}

/* 下载按钮下方版本元信息条 — 防下载错版本 */
.download-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  padding: 10px 14px;
  margin-top: 2px;
  border-radius: 10px;
  background: rgba(76, 175, 125, .08);
  border: 1px solid rgba(76, 175, 125, .22);
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
}
.meta-item {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--color-text-muted);
}
.meta-item svg { color: var(--color-primary); flex-shrink: 0; }
.meta-label { opacity: .7; }
.meta-value {
  color: var(--color-primary);
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 12.5px;
}
.sha-prefix { letter-spacing: .02em; }
.meta-divider {
  display: inline-block;
  width: 1px; height: 14px;
  background: rgba(76, 175, 125, .25);
}
.meta-build {
  margin-left: auto;
  font-size: 11px;
  color: var(--color-text-muted);
  opacity: .6;
  font-family: var(--font-mono);
}

/* SSL / sha256 trust row (under download button) */
.trust-row {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 4px;
}
.trust-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 5px 10px;
  border-radius: var(--radius-full);
  background: rgba(15, 23, 42, .04);
  color: var(--color-text-muted);
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 500;
  border: 1px solid rgba(15, 23, 42, .04);
}
.trust-badge svg { color: var(--color-primary); }
.trust-badge-link {
  cursor: pointer;
  text-decoration: none;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.trust-badge-link:hover {
  background: rgba(76, 175, 125, .12);
  color: var(--color-primary);
  border-color: rgba(76, 175, 125, .2);
}

/* ===== Linear badge ===== */
.linear-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: rgba(15, 23, 42, .05);
  color: var(--color-text-body);
  font-family: var(--font-mono);
}
.linear-badge.success { background: rgba(76, 175, 125, .12); color: var(--color-primary); }
.linear-badge.active { background: rgba(79, 169, 219, .12); color: var(--color-accent); }
.linear-badge.muted {
  background: rgba(15, 23, 42, .05);
  color: var(--color-text-muted);
  position: relative;
  padding-left: 18px;
}
.linear-badge.muted::before {
  content: '';
  position: absolute; left: 8px; top: 50%; transform: translateY(-50%);
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-text-muted);
  box-shadow: 0 0 0 2px rgba(15, 23, 42, .08);
}

.dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.bg-success { background: var(--color-primary); }

/* ===== Section ===== */
.section-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--color-text-primary);
}

/* ===== Features ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
.feature-card {
  display: flex; flex-direction: column; gap: 10px;
  padding: 18px;
}
.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.feature-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
}
.feature-card h3 { font-size: 15px; }
.feature-card p {
  margin: 0; font-size: 13px; line-height: 1.55;
  color: var(--color-text-muted);
}

/* ===== Install steps ===== */
.install-card { display: flex; flex-direction: column; gap: 16px; padding: 22px; }
.step { display: flex; gap: 14px; align-items: flex-start; }
.step-num {
  flex: 0 0 auto;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: #FFFFFF;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 600;
  font-family: var(--font-mono);
}
.step-body h4 {
  font-size: 14px; margin-bottom: 2px;
}
.step-body p {
  margin: 0; font-size: 13px; line-height: 1.55;
  color: var(--color-text-muted);
}
.step-body p + p { margin-top: 6px; }
.step-warn {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(245, 158, 11, .12);
  color: #B45309;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid rgba(245, 158, 11, .22);
}

/* ===== Requirements ===== */
.req-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}
.req-card { text-align: center; padding: 18px; position: relative; transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease; }
.req-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.req-platform {
  font-size: 14px; font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}
.req-version {
  font-size: 14px; font-weight: 600;
  color: var(--color-text-primary);
}
.req-arch {
  font-size: 12px; color: var(--color-text-muted);
  margin-top: 4px;
  font-family: var(--font-mono);
}
.req-card.is-disabled {
  background: rgba(15, 23, 42, .025);
  border-style: dashed;
}
.req-card.is-disabled:hover { transform: none; }
.req-card.is-disabled .req-platform,
.req-card.is-disabled .req-version { color: var(--color-text-muted); }
.req-card.is-disabled .req-arch { opacity: .55; }
.req-card.is-disabled .req-coming {
  position: absolute;
  top: 8px; right: 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .04em;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: rgba(245, 158, 11, .14);
  color: var(--color-secondary);
  font-family: var(--font-mono);
}

/* ===== Footer ===== */
.app-footer {
  border-top: 1px solid var(--color-border);
  background: rgba(255, 255, 255, .6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.footer-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 18px 20px;
  text-align: center;
}
.footer-brand {
  margin: 0; font-size: 13px; font-weight: 600;
  color: var(--color-text-primary);
}
.footer-meta {
  margin: 4px 0 0;
  font-size: 12px; color: var(--color-text-muted);
}

/* ===== WeChat overlay ===== */
.wechat-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(15, 23, 42, .82);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 24px;
  animation: fadein .3s ease-out;
}
.wechat-overlay[hidden] { display: none; }

@keyframes fadein { from { opacity: 0; } to { opacity: 1; } }

/* 顶部右上角的指引动画 */
.wechat-arrow {
  position: fixed;
  top: 0; right: 14px;
  width: 90px; height: 90px;
  background: linear-gradient(135deg, rgba(76, 175, 125, .95), rgba(79, 169, 219, .95));
  border-radius: 0 0 50% 50%;
  display: flex; align-items: flex-start; justify-content: center;
  padding-top: 12px;
  box-shadow: 0 6px 20px rgba(76, 175, 125, .4);
  z-index: 1;
}
.wechat-arrow-dots {
  font-size: 22px; color: #FFFFFF;
  letter-spacing: 2px;
  font-weight: 700;
  font-family: var(--font-mono);
}
.wechat-arrow::after {
  content: '';
  position: absolute;
  top: 60px; left: 50%;
  transform: translateX(-50%);
  border: 8px solid transparent;
  border-top-color: rgba(76, 175, 125, .95);
  animation: arrowBounce 1.4s ease-in-out infinite;
}
@keyframes arrowBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50%      { transform: translateX(-50%) translateY(8px); opacity: .55; }
}

.wechat-card {
  margin-top: 90px;
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  max-width: 320px; width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg);
  animation: slideup .35s ease-out;
}
@keyframes slideup {
  from { transform: translateY(16px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}
.wechat-icon {
  width: 64px; height: 64px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: rgba(76, 175, 125, .12);
  display: flex; align-items: center; justify-content: center;
}
.wechat-title {
  font-size: 17px; margin: 0 0 6px;
}
.wechat-dots {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-primary);
}
.wechat-sub {
  margin: 0 0 14px; font-size: 14px; color: var(--color-text-body);
}
.wechat-sub b { color: var(--color-primary); }
.wechat-desc {
  margin: 0 0 16px;
  font-size: 13px; line-height: 1.55;
  color: var(--color-text-muted);
}
.wechat-divider {
  height: 1px; margin: 14px 0;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}
.wechat-domain {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-muted);
}

.wechat-copy {
  margin-top: 6px;
  width: 100%;
  font-size: 14px;
  padding: 12px 18px;
  min-height: 44px; /* iOS HIG 触摸目标 */
}

/* WeChat overlay 内的二维码块 */
.wechat-qr {
  margin-top: 16px;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.wechat-qr .qr-frame-wechat {
  width: 120px; height: 120px;
  padding: 5px;
  background: #FFFFFF;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(15, 23, 42, .08);
}
.wechat-qr .qr-frame-wechat img { width: 100%; height: 100%; display: block; }
.wechat-qr-hint {
  font-size: 12px;
  color: var(--color-text-muted);
  text-align: center;
  margin: 0;
  line-height: 1.4;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .page { padding: 24px 16px 56px; gap: 32px; }
  .app-header { padding-top: env(safe-area-inset-top, 0); }
  .header-inner { padding: 12px 16px; }
  .logo-text h3 { font-size: 15px; }
  .linear-button { min-height: 44px; } /* iOS HIG */
  .hero-card {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 24px 20px;
    gap: 18px;
  }
  .hero-icon { margin: 0 auto; }
  .hero-title { font-size: 24px; }
  .hero-meta { justify-content: center; }
  .feature-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .feature-card { padding: 16px; }
  .install-card { padding: 18px; }
  .step-num { width: 26px; height: 26px; font-size: 12px; }
  .req-card { padding: 16px; }
}

@media (max-width: 420px) {
  .header-inner { padding: 10px 14px; }
  .logo-img { width: 34px; height: 34px; }
  .logo-text h3 { font-size: 14px; }
  .linear-button.sm { padding: 7px 12px; font-size: 12px; }
  .page { padding: 20px 14px 48px; gap: 28px; }
  .hero-card { padding: 20px 16px; }
  .hero-icon { width: 108px; height: 108px; }
  .hero-title { font-size: 22px; }
  .trust-row { gap: 4px; }
  .trust-badge { font-size: 10px; padding: 4px 8px; }
  .feature-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .feature-card { padding: 14px; }
  .feature-card h3 { font-size: 14px; }
  .feature-card p { font-size: 12px; }
  .install-card { padding: 16px; gap: 12px; }
  .step-body h4 { font-size: 13px; }
  .step-body p { font-size: 12px; }
  .step-warn { font-size: 11px; padding: 3px 8px; }
  .req-grid { grid-template-columns: 1fr; gap: 10px; }
  .footer-inner { padding: 16px 14px; }
  .footer-brand { font-size: 12px; }
  .footer-meta { font-size: 11px; }
}

@media (max-width: 360px) {
  .feature-grid { grid-template-columns: 1fr; }
  .wechat-card { padding: 22px 18px; max-width: calc(100vw - 32px); }
}

/* 横屏 (手机横向 / 小桌面) */
@media (max-height: 500px) and (orientation: landscape) {
  .app-header { position: relative; }
}