/* ============ 主题变量 ============ */
:root {
  --bg: #f7f9fc;
  --bg-deep: #eef2f9;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-solid: #ffffff;
  --line: rgba(18, 32, 56, 0.09);
  --line-hover: rgba(15, 159, 143, 0.42);
  --text: #101827;
  --text-soft: #46536b;
  --muted: #7a8699;
  --teal: #0f9f8f;
  --teal-deep: #0a7a6d;
  --violet: #6d5efc;
  --amber: #d08700;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow-md: 0 10px 30px -12px rgba(16, 24, 40, 0.18);
  --shadow-lg: 0 28px 60px -28px rgba(16, 24, 40, 0.32);
  --radius: 18px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1017;
    --bg-deep: #070b11;
    --surface: rgba(23, 31, 43, 0.72);
    --surface-solid: #151c26;
    --line: rgba(255, 255, 255, 0.09);
    --line-hover: rgba(45, 212, 191, 0.45);
    --text: #eef2f8;
    --text-soft: #b3becd;
    --muted: #7d8899;
    --teal: #2dd4bf;
    --teal-deep: #5eead4;
    --violet: #a78bfa;
    --amber: #fbbf24;
    --shadow-md: 0 10px 30px -12px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 28px 60px -28px rgba(0, 0, 0, 0.8);
  }
}

* { box-sizing: border-box; }

::selection {
  background: rgba(15, 159, 143, 0.22);
  color: var(--text);
}

@media (prefers-color-scheme: dark) {
  ::selection { background: rgba(45, 212, 191, 0.28); }
}

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-feature-settings: "cv02", "cv03", "cv04";
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ============ 背景光晕 ============ */
.aurora {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
}

.aurora span {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  animation: drift 22s ease-in-out infinite alternate;
}

.aurora .a1 {
  width: 620px; height: 620px;
  top: -230px; left: -120px;
  background: radial-gradient(circle, rgba(15, 159, 143, 0.55), transparent 68%);
}

.aurora .a2 {
  width: 560px; height: 560px;
  top: -160px; right: -140px;
  background: radial-gradient(circle, rgba(109, 94, 252, 0.42), transparent 68%);
  animation-delay: -8s;
}

.aurora .a3 {
  width: 520px; height: 520px;
  top: 380px; left: 42%;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.28), transparent 70%);
  animation-delay: -14s;
}

@media (prefers-color-scheme: dark) {
  .aurora span { opacity: 0.34; }
}

@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(40px, 50px, 0) scale(1.14); }
}

/* ============ 布局 ============ */
.page {
  width: min(1160px, calc(100vw - 36px));
  margin: 0 auto;
  padding: 54px 0 64px;
}

/* ============ 头部 ============ */
.hero { margin-bottom: 30px; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 8px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-soft);
  letter-spacing: 0.02em;
}

.pulse {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 0 rgba(15, 159, 143, 0.6);
  animation: pulse 2.4s ease-out infinite;
  margin-left: 6px;
}

@keyframes pulse {
  70%  { box-shadow: 0 0 0 9px rgba(15, 159, 143, 0); }
  100% { box-shadow: 0 0 0 0 rgba(15, 159, 143, 0); }
}

h1 {
  margin: 18px 0 12px;
  font-size: clamp(34px, 5.4vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.grad {
  background: linear-gradient(112deg, var(--teal) 6%, var(--violet) 78%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  margin: 0;
  max-width: 720px;
  color: var(--text-soft);
  font-size: 15.5px;
  line-height: 1.75;
}

.lede code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13.5px;
  padding: 2px 7px;
  border-radius: 7px;
  background: var(--surface-solid);
  border: 1px solid var(--line);
}

/* ============ 快捷推荐 ============ */
.quickpicks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(228px, 1fr));
  gap: 12px;
  margin: 26px 0 32px;
}

.pick {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 15px;
  background: var(--surface);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.pick:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-hover);
}

.pick .ico {
  flex: none;
  width: 36px; height: 36px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font-size: 17px;
  background: linear-gradient(140deg, rgba(15, 159, 143, 0.16), rgba(109, 94, 252, 0.16));
  border: 1px solid var(--line);
}

.pick .t { font-size: 12.5px; color: var(--muted); margin-bottom: 3px; }

.pick .m {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.2s ease;
}

.pick .m:hover { color: var(--teal-deep); }

/* ============ 工具条 ============ */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.tabs {
  display: inline-flex;
  padding: 4px;
  gap: 3px;
  border-radius: 13px;
  background: var(--surface);
  border: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.tab {
  appearance: none;
  border: 0;
  cursor: pointer;
  padding: 8px 16px;
  border-radius: 10px;
  background: transparent;
  color: var(--text-soft);
  font-size: 13.5px;
  font-weight: 600;
  font-family: inherit;
  transition: background 0.2s ease, color 0.2s ease;
}

.tab:hover { color: var(--text); }

.tab.active {
  background: var(--surface-solid);
  color: var(--teal-deep);
  box-shadow: var(--shadow-sm);
}

.search {
  position: relative;
  flex: 1 1 200px;
  max-width: 300px;
}

.search input {
  width: 100%;
  padding: 10px 14px 10px 38px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface);
  backdrop-filter: blur(12px);
  color: var(--text);
  font-size: 13.5px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search input::placeholder { color: var(--muted); }

.search input:focus {
  border-color: var(--line-hover);
  box-shadow: 0 0 0 4px rgba(15, 159, 143, 0.12);
}

.search .mag {
  position: absolute;
  left: 13px; top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 14px;
  pointer-events: none;
}

/* ============ 分组标题 ============ */
.section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 34px 0 4px;
  flex-wrap: wrap;
}

.section-head h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.chip {
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 700;
  background: rgba(15, 159, 143, 0.13);
  color: var(--teal-deep);
  border: 1px solid rgba(15, 159, 143, 0.22);
}

.chip.alt {
  background: rgba(109, 94, 252, 0.13);
  color: var(--violet);
  border-color: rgba(109, 94, 252, 0.24);
}

.section-note {
  margin: 8px 0 18px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.7;
  max-width: 780px;
}

/* ============ 模型卡片 ============ */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(316px, 1fr));
  gap: 16px;
}

.card {
  position: relative;
  padding: 20px 20px 18px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.26s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.26s ease, border-color 0.26s ease;
  animation: rise 0.5s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.card:nth-child(1) { animation-delay: 0.02s; }
.card:nth-child(2) { animation-delay: 0.06s; }
.card:nth-child(3) { animation-delay: 0.1s; }
.card:nth-child(4) { animation-delay: 0.14s; }
.card:nth-child(5) { animation-delay: 0.18s; }
.card:nth-child(6) { animation-delay: 0.22s; }
.card:nth-child(7) { animation-delay: 0.26s; }
.card:nth-child(8) { animation-delay: 0.3s; }
.card:nth-child(9) { animation-delay: 0.34s; }

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--teal), var(--violet));
  opacity: 0;
  transition: opacity 0.26s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--line-hover);
}

.card:hover::before { opacity: 1; }

.card.feat {
  border-color: rgba(15, 159, 143, 0.35);
  box-shadow: 0 0 0 1px rgba(15, 159, 143, 0.1), var(--shadow-md);
}

.card.feat::before { opacity: 1; }

.card-top {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.name {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  padding: 5px 11px;
  border-radius: 9px;
  background: var(--surface-solid);
  border: 1px solid var(--line);
  color: var(--text);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.12s ease;
}

.name:hover { border-color: var(--teal); color: var(--teal-deep); }
.name:active { transform: scale(0.97); }

.tag {
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.tag.rec   { background: rgba(15, 159, 143, 0.14); color: var(--teal-deep); }
.tag.fast  { background: rgba(56, 189, 248, 0.16); color: #0284c7; }
.tag.value { background: rgba(109, 94, 252, 0.14); color: var(--violet); }
.tag.gray  { background: rgba(122, 134, 153, 0.14); color: var(--muted); }
.tag.gold  { background: rgba(208, 135, 0, 0.14); color: var(--amber); }

@media (prefers-color-scheme: dark) {
  .tag.fast { color: #7dd3fc; }
}

.copied {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--teal);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.copied.show { opacity: 1; transform: translateX(0); }

.desc {
  margin: 0 0 16px;
  color: var(--text-soft);
  font-size: 13.5px;
  line-height: 1.68;
  min-height: 44px;
}

.prices {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.pr {
  background: var(--surface-solid);
  padding: 10px 8px;
  text-align: center;
}

.pr span {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 3px;
}

.pr strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.pr.free strong { color: var(--muted); font-weight: 600; }

.mapped {
  padding: 11px 12px;
  border-radius: 12px;
  background: var(--surface-solid);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 12.5px;
  text-align: center;
}

.unit {
  margin: 10px 2px 0;
  font-size: 11.5px;
  color: var(--muted);
}

/* ============ 提示条 ============ */
.callout {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin: 34px 0 0;
  padding: 16px 18px;
  border-radius: 15px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  backdrop-filter: blur(14px);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text-soft);
}

.callout b { color: var(--text); }

.empty {
  display: none;
  padding: 46px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

.empty.show { display: block; }

footer {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.85;
}

footer a { color: var(--teal-deep); text-decoration: none; font-weight: 600; }
footer a:hover { text-decoration: underline; }

.hide { display: none !important; }

@media (max-width: 560px) {
  .page { padding: 34px 0 44px; }
  .desc { min-height: 0; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .search { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  .aurora span, .pulse { animation: none; }
  .card { animation: none; }
  .card:hover { transform: none; }
  .pick:hover { transform: none; }
}