/* XUSUO交换机 · 样式（仿 ai-switch / VitePress 默认主题风格） */

:root {
  --accent: #10b981;
  --accent-strong: #059669;
  --accent-soft: rgba(16, 185, 129, 0.12);
  --amber: #f59e0b;
  --amber-soft: rgba(245, 158, 11, 0.1);
  --bg: #ffffff;
  --bg-soft: #f6f8f8;
  --card: #ffffff;
  --border: #e4e6eb;
  --text: #213547;
  --text-2: #5c6773;
  --text-3: #8b94a0;
  --nav-bg: rgba(255, 255, 255, 0.82);
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.05);
  --dot: rgba(33, 53, 71, 0.05);
  --tint-a: rgba(16, 185, 129, 0.07);
  --tint-b: rgba(6, 182, 212, 0.055);
}

html.dark {
  --accent-soft: rgba(16, 185, 129, 0.16);
  --amber-soft: rgba(245, 158, 11, 0.14);
  --bg: #161618;
  --bg-soft: #1c1c20;
  --card: #1e1e22;
  --border: #2c2c32;
  --text: #e6e8eb;
  --text-2: #a3acb8;
  --text-3: #6f7884;
  --nav-bg: rgba(22, 22, 24, 0.82);
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
  --dot: rgba(230, 232, 235, 0.045);
  --tint-a: rgba(16, 185, 129, 0.08);
  --tint-b: rgba(6, 182, 212, 0.05);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html {
  scroll-behavior: smooth;
  background: var(--bg);
  transition: background 0.3s ease;
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: transparent;
  color: var(--text);
  line-height: 1.65;
  transition: color 0.3s ease;
  -webkit-font-smoothing: antialiased;
}

/* 全页固定装饰层：角落环境光 + 细点阵 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(760px 500px at 6% -12%, var(--tint-a), transparent 65%),
    radial-gradient(680px 480px at 102% 12%, var(--tint-b), transparent 65%),
    radial-gradient(var(--dot) 1px, transparent 1.6px);
  background-size: auto, auto, 28px 28px;
}

.container { max-width: 1152px; margin: 0 auto; padding: 0 24px; }

a { color: var(--accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; }

button, a, .chip { touch-action: manipulation; }
.chip, .btn, .btn-copy { user-select: none; -webkit-user-select: none; }

::selection { background: var(--accent-soft); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

section { scroll-margin-top: 76px; }

/* ---------- 动画 ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(34px, -20px) scale(1.06); }
  66% { transform: translate(-24px, 16px) scale(0.96); }
}

@keyframes shimmer {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

@keyframes rippleAnim {
  from { transform: scale(0); opacity: 0.75; }
  to { transform: scale(1); opacity: 0; }
}

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease;
}
.nav.scrolled { box-shadow: 0 6px 24px rgba(0, 0, 0, 0.07); }
html.dark .nav.scrolled { box-shadow: 0 6px 24px rgba(0, 0, 0, 0.45); }

.nav-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 60px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
}
.brand:hover { text-decoration: none; }

.brand-logo { width: 28px; height: 28px; border-radius: 7px; box-shadow: var(--shadow-sm); }

.brand-name { font-size: 17px; letter-spacing: 0.02em; }
.brand-name strong { color: var(--accent-strong); font-weight: 800; }

.nav-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  color: var(--text-2);
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s, transform 0.15s;
}
.nav-links a:active { transform: scale(0.94); }
.nav-links a.active { color: var(--accent-strong); background: var(--accent-soft); font-weight: 600; }

.theme-toggle {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--card);
  color: var(--text-2);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.theme-toggle:active { transform: scale(0.9); }

.icon-sun { display: none; }
html.dark .icon-sun { display: block; }
html.dark .icon-moon { display: none; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; }

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.5;
  pointer-events: none;
  animation: float 16s ease-in-out infinite;
}
.orb-a { width: 440px; height: 440px; background: rgba(52, 211, 153, 0.4); top: -170px; left: 6%; }
.orb-b { width: 380px; height: 380px; background: rgba(34, 211, 238, 0.32); top: -100px; right: 4%; animation-delay: -5s; }
.orb-c { width: 300px; height: 300px; background: rgba(251, 191, 36, 0.26); bottom: -150px; left: 42%; animation-delay: -9s; }
html.dark .orb { opacity: 0.3; }
html.dark .orb-a { background: rgba(16, 185, 129, 0.3); }
html.dark .orb-b { background: rgba(6, 182, 212, 0.24); }
html.dark .orb-c { background: rgba(245, 158, 11, 0.16); }

.hero-inner {
  position: relative;
  text-align: center;
  padding-top: 76px;
  padding-bottom: 44px;
}

.hero-inner > * { animation: fadeUp 0.65s both; }
.hero-inner > :nth-child(1) { animation-delay: 0.02s; }
.hero-inner > :nth-child(2) { animation-delay: 0.1s; }
.hero-inner > :nth-child(3) { animation-delay: 0.18s; }
.hero-inner > :nth-child(4) { animation-delay: 0.26s; }
.hero-inner > :nth-child(5) { animation-delay: 0.34s; }

.hero-badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-strong);
  background: var(--accent-soft);
  border: 1px solid transparent;
  padding: 5px 14px;
  border-radius: 999px;
}

.hero-title {
  margin: 22px 0 14px;
  font-size: clamp(38px, 6.5vw, 58px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.grad {
  background: linear-gradient(115deg, #34d399 10%, #10b981 45%, #06b6d4 90%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shimmer 6s linear infinite alternate;
}

.hero-tagline {
  max-width: 640px;
  margin: 0 auto 10px;
  font-size: 17px;
  color: var(--text-2);
}

.hero-tip {
  margin: 0 0 30px;
  font-size: 13.5px;
  color: var(--amber);
  background: var(--amber-soft);
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 44px;
  flex-wrap: wrap;
}

.stat { display: flex; flex-direction: column; align-items: center; gap: 2px; }

.stat-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--accent-strong);
  font-variant-numeric: tabular-nums;
}

.stat-label { font-size: 13px; color: var(--text-3); }

/* ---------- 先读这一段 ---------- */
.notice {
  position: relative;
  max-width: 880px;
  margin: 6px auto 0;
  padding: 18px 56px 18px 20px;
  background: linear-gradient(135deg, var(--amber-soft), rgba(245, 158, 11, 0.04));
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: 14px;
  font-size: 14px;
  animation: fadeUp 0.6s 0.42s both;
}

.notice-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }

.notice-list { margin: 0; padding-left: 20px; color: var(--text-2); }
.notice-list li + li { margin-top: 4px; }

.notice-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text-2);
  font-size: 12.5px;
  padding: 4px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, transform 0.15s;
}
.notice-btn:active { transform: scale(0.94); }

/* ---------- 区块标题 ---------- */
.section { padding-top: 68px; padding-bottom: 24px; }

.section-alt {
  position: relative;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 4%, var(--bg-soft)), var(--bg-soft) 140px);
  border-bottom: 1px solid var(--border);
  margin-top: 48px;
  padding-bottom: 56px;
}
.section-alt::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--accent) 45%, transparent), transparent);
}
.section-alt .section { padding-top: 56px; }

.kicker {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.section-head h2 {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin: 8px 0 6px;
  font-size: 28px;
  letter-spacing: -0.01em;
}

.count {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-strong);
  background: var(--accent-soft);
  padding: 3px 12px;
  border-radius: 999px;
  font-variant-numeric: tabular-nums;
}

.updated {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-3);
  border: 1px dashed var(--border);
  padding: 2px 11px;
  border-radius: 999px;
}

.section-desc { margin: 0; color: var(--text-2); font-size: 14.5px; }

/* ---------- 工具栏：搜索 + 筛选 + 排序 ---------- */
.toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin: 24px 0 20px;
}

.search {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1 1 240px;
  max-width: 340px;
  padding: 0 14px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text-3);
  transition: border-color 0.2s;
}
.search:focus-within { border-color: var(--accent); color: var(--accent-strong); }

.search input {
  flex: 1;
  height: 100%;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
}
.search input::placeholder { color: var(--text-3); }

.chips { display: flex; gap: 8px; flex-wrap: wrap; }

.chip {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text-2);
  font-size: 13px;
  font-family: inherit;
  padding: 7px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
}
.chip:active { transform: scale(0.93); }
.chip .n { opacity: 0.55; font-size: 11px; margin-left: 3px; font-variant-numeric: tabular-nums; }
.chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}
.chip.active .n { opacity: 0.85; }

.sort { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-3); }

.sort select {
  height: 38px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 10px;
  padding: 0 10px;
  font-family: inherit;
  font-size: 13.5px;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
}
.sort select:focus { border-color: var(--accent); }

/* ---------- 站点卡片 ---------- */
.grid { display: grid; gap: 16px; }
.cards { grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); }

.card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
  animation: fadeUp 0.45s both;
}
.card:active { transform: translateY(-1px) scale(0.995); }

/* 无可用模型的站点：整卡灰化，但注册按钮保持品牌色（仍可注册囤额度） */
.card.no-models {
  background: linear-gradient(180deg, color-mix(in srgb, var(--text-3) 5%, var(--card)), var(--card) 120px);
  opacity: 0.82;
}
.card.no-models .avatar { filter: grayscale(0.85); }
.card.no-models .bonus-value { color: var(--text-3); }
.card.no-models .card-name { color: var(--text-2); }

/* 掠过的高光 */
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 42%, rgba(16, 185, 129, 0.07) 50%, transparent 58%);
  transform: translateX(-110%);
  transition: transform 0.9s ease;
  pointer-events: none;
}

.card-id { display: flex; align-items: center; gap: 12px; min-width: 0; }

.avatar {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}
.av-0 { background: linear-gradient(135deg, #34d399, #059669); }
.av-1 { background: linear-gradient(135deg, #60a5fa, #2563eb); }
.av-2 { background: linear-gradient(135deg, #fbbf24, #d97706); }
.av-3 { background: linear-gradient(135deg, #a78bfa, #7c3aed); }
.av-4 { background: linear-gradient(135deg, #f472b6, #db2777); }
.av-5 { background: linear-gradient(135deg, #2dd4bf, #0d9488); }
.av-6 { background: linear-gradient(135deg, #94a3b8, #475569); }

.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }

.card-name { margin: 0; font-size: 17.5px; font-weight: 700; }

.card-domain {
  font-size: 12.5px;
  color: var(--text-3);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
}

.card-badges { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; flex-shrink: 0; }

.badge {
  font-size: 11.5px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 999px;
  white-space: nowrap;
  color: var(--text-3);
  border: 1px solid var(--border);
}
.badge.aff { color: var(--accent-strong); background: var(--accent-soft); border-color: transparent; }
.badge.half { color: var(--amber); background: var(--amber-soft); border-color: transparent; }

/* 实时状态徽章 */
.badge.live { border-color: transparent; font-variant-numeric: tabular-nums; }
.badge.live-on { color: #059669; background: var(--accent-soft); }
html.dark .badge.live-on { color: #34d399; }
.badge.live-weak { color: var(--amber); background: var(--amber-soft); }
.badge.live-off { color: #dc2626; background: rgba(220, 38, 38, 0.1); }
html.dark .badge.live-off { color: #f87171; background: rgba(248, 113, 113, 0.13); }
.badge.live-unknown { color: var(--text-3); background: var(--bg-soft); }
html.dark .badge.live-unknown { background: rgba(255, 255, 255, 0.05); }

.live-stamp { color: var(--accent-strong); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.live-src { font-size: 10.5px; color: var(--text-3); align-self: center; margin-left: 4px; white-space: nowrap; }
.tag.muted { color: var(--text-3); }

.tags-toggle {
  border: 1px dashed var(--border);
  background: transparent;
  color: var(--text-2);
  font-size: 11.5px;
  font-family: inherit;
  padding: 3px 10px;
  border-radius: 6px;
  cursor: pointer;
  align-self: center;
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s;
}
.tags-toggle:hover { color: var(--accent-strong); border-color: var(--accent); }

.stars { font-size: 13px; line-height: 1.1; letter-spacing: 1.5px; white-space: nowrap; }
.stars b { color: var(--amber); font-weight: 400; }
.stars i { color: var(--text-3); font-style: normal; opacity: 0.6; }

.bonus-row { display: flex; gap: 10px; }

.bonus {
  flex: 1;
  background: var(--bg-soft);
  border-radius: 10px;
  padding: 9px 13px;
  display: flex;
  flex-direction: column;
  gap: 1px;
  transition: background 0.25s;
}
html.dark .bonus { background: rgba(255, 255, 255, 0.04); }

.bonus-label { font-size: 12px; color: var(--text-3); }

.bonus-value {
  font-size: 19px;
  font-weight: 800;
  color: var(--accent-strong);
  font-variant-numeric: tabular-nums;
}

.bonus-note { font-size: 12px; color: var(--text-2); margin-top: 2px; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; }

.tag {
  font-size: 12px;
  padding: 3px 9px;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
}
.tag-claude { background: rgba(217, 119, 6, 0.12); color: #b45309; }
html.dark .tag-claude { background: rgba(251, 191, 36, 0.13); color: #fbbf24; }
.tag-gpt { background: rgba(16, 185, 129, 0.12); color: var(--accent-strong); }
html.dark .tag-gpt { color: #34d399; }
.tag-deepseek { background: rgba(37, 99, 235, 0.11); color: #1d4ed8; }
html.dark .tag-deepseek { background: rgba(96, 165, 250, 0.14); color: #60a5fa; }
.tag-glm { background: rgba(13, 148, 136, 0.13); color: #0f766e; }
html.dark .tag-glm { color: #2dd4bf; }
.tag-other { background: rgba(124, 58, 237, 0.11); color: #7c3aed; }
html.dark .tag-other { background: rgba(167, 139, 250, 0.14); color: #a78bfa; }
.tag-misc { background: var(--bg-soft); color: var(--text-2); }
html.dark .tag-misc { background: rgba(255, 255, 255, 0.05); }

.facts { margin: 0; display: flex; flex-direction: column; gap: 6px; }

.facts > div { display: flex; gap: 10px; font-size: 13.5px; line-height: 1.55; }

.facts dt { flex-shrink: 0; color: var(--text-3); }
.facts dt::after { content: "："; }
.facts dd { margin: 0; color: var(--text-2); }

.facts .warn-row dt { color: var(--amber); font-weight: 600; }
.facts .warn-row dd {
  color: var(--amber);
  background: var(--amber-soft);
  border-radius: 6px;
  padding: 1px 8px;
  font-weight: 500;
}

.facts .warn-row.danger dt { color: #dc2626; }
.facts .warn-row.danger dd {
  color: #dc2626;
  background: rgba(220, 38, 38, 0.1);
}
html.dark .facts .warn-row.danger dt,
html.dark .facts .warn-row.danger dd { color: #f87171; }
html.dark .facts .warn-row.danger dd { background: rgba(248, 113, 113, 0.13); }

.card-foot {
  margin-top: auto;
  padding-top: 4px;
  display: flex;
  gap: 8px;
}

.btn {
  position: relative;
  overflow: hidden;
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 38px;
  border-radius: 9px;
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 2px 10px rgba(16, 185, 129, 0.25);
  transition: box-shadow 0.25s, transform 0.15s;
}
.btn:active { transform: scale(0.97); box-shadow: 0 2px 6px rgba(16, 185, 129, 0.3); }

.btn-copy {
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.15s;
}
.btn-copy:active { transform: scale(0.88); }
.btn-copy.ok {
  color: var(--accent-strong);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.empty { text-align: center; color: var(--text-3); padding: 48px 0; font-size: 14.5px; }
.empty p { margin: 0 0 8px; }

.link-btn {
  border: none;
  background: none;
  color: var(--accent-strong);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
}

/* ---------- 工具卡片 ---------- */
.tools { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
  animation: fadeUp 0.45s both;
}
.tool-card:active { transform: translateY(-1px) scale(0.995); }

.tool-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.tool-head h3 { margin: 0; font-size: 16.5px; }

.tool-card p { margin: 0; font-size: 13.5px; color: var(--text-2); flex: 1; }

.tool-link { font-size: 13.5px; font-weight: 600; }
.tool-link.disabled { color: var(--text-3); font-weight: 400; cursor: default; }
.tool-link.disabled:hover { text-decoration: none; }

/* ---------- 风险提示 ---------- */
.risk-list {
  max-width: 880px;
  margin: 18px 0 0;
  padding: 22px 26px 22px 44px;
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--amber);
  border-radius: 14px;
  font-size: 14.5px;
  color: var(--text-2);
}
.risk-list li + li { margin-top: 10px; }
.risk-list strong { color: var(--text); }

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  margin-top: 64px;
  padding: 28px 0 36px;
}
.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--accent) 50%, transparent), transparent);
}

.footer-inner { text-align: center; color: var(--text-3); font-size: 13px; }
.footer-inner p { margin: 4px 0; }

/* ---------- 回到顶部 ---------- */
.back-top {
  position: fixed;
  right: 22px;
  bottom: 26px;
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  color: var(--text-2);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.3s, transform 0.3s, color 0.2s, background 0.2s, border-color 0.2s;
  z-index: 60;
  box-shadow: var(--shadow-sm);
}
.back-top.show { opacity: 1; pointer-events: auto; transform: none; }
.back-top:active { transform: scale(0.9); }

/* ---------- 触摸涟漪 ---------- */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.3);
  transform: scale(0);
  animation: rippleAnim 0.6s ease-out forwards;
  pointer-events: none;
}
.btn .ripple { background: rgba(255, 255, 255, 0.5); }
.chip.active .ripple { background: rgba(255, 255, 255, 0.45); }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%) translateY(16px);
  background: var(--text);
  color: var(--bg);
  font-size: 13.5px;
  padding: 9px 18px;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 99;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 悬停效果（仅限有指针的设备，避免触屏粘滞） ---------- */
@media (hover: hover) {
  .nav-links a:hover { color: var(--text); background: var(--accent-soft); text-decoration: none; }
  .theme-toggle:hover { color: var(--accent-strong); border-color: var(--accent); transform: rotate(12deg); }
  .card:hover {
    border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
    box-shadow: var(--shadow);
    transform: translateY(-3px);
  }
  .card:hover::before { transform: translateX(110%); }
  .card:hover .bonus { background: var(--accent-soft); }
  .tool-card:hover {
    border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
    box-shadow: var(--shadow);
    transform: translateY(-3px);
  }
  .chip:hover { border-color: var(--accent); color: var(--accent-strong); }
  .chip.active:hover { color: #fff; }
  .btn:hover { box-shadow: 0 6px 20px rgba(16, 185, 129, 0.42); }
  .btn-copy:hover { color: var(--accent-strong); border-color: var(--accent); }
  .notice-btn:hover { color: var(--accent-strong); border-color: var(--accent); }
  .back-top:hover { color: #fff; background: var(--accent); border-color: var(--accent); }
  .sort select:hover { border-color: var(--accent); }
  .risk-list:hover { border-color: color-mix(in srgb, var(--amber) 40%, var(--border)); }
}

/* ---------- 触屏：加大点击目标 ---------- */
@media (pointer: coarse) {
  .chip { padding: 9px 16px; }
  .btn { height: 42px; }
  .btn-copy { width: 42px; height: 42px; }
  .theme-toggle { width: 40px; height: 40px; }
  .nav-links a { padding: 8px 10px; }
  .notice-btn { padding: 6px 14px; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .nav-links a { padding: 6px 8px; font-size: 13px; }
  .hero-inner { padding-top: 52px; }
  .hero-stats { gap: 26px; }
  .stat-num { font-size: 24px; }
  .section-head h2 { font-size: 23px; }
  .notice { padding: 16px 20px; }
  .notice-btn { position: static; margin-top: 10px; }
  .cards { grid-template-columns: 1fr; }
  .back-top { right: 14px; bottom: 18px; }
}

/* ---------- 无障碍：减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}