/* ============ 对齐 Claude API 落地页设计系统 ============ */
/* 默认暗色 token；亮色由 html[data-theme="light"] 覆盖（更高优先级） */
:root {
  --bg: #0b0705;
  --bg-2: #120c08;
  --surface: linear-gradient(
    155deg,
    rgba(60, 38, 22, 0.55),
    rgba(24, 16, 11, 0.65)
  );
  --surface-solid: #181009;
  --line: rgba(214, 146, 80, 0.18);
  --line-strong: rgba(226, 155, 84, 0.42);
  --text: #f6ece2;
  --text-2: rgba(246, 236, 226, 0.78);
  --text-3: rgba(246, 236, 226, 0.58);
  --brand: #e2953f;
  --brand-2: #f3b96a;
  --brand-deep: #a55f1c;
  --glow: rgba(226, 150, 63, 0.35);
  --ok: #6f9a56;
  --ok-fg: #b7e09a;
  --warn: #c8933d;
  --err: #c1553f;
  --err-fg: #f0a090;
  --code-key: #c98a52;
  --code-str: #b98a5e;
  --code-com: #6d5643;
  --code-fn: #e0a463;
  --code-txt: #cbb49c;
  --nav-bg: rgba(26, 17, 11, 0.86);
  --inset-bg: rgba(0, 0, 0, 0.28);
  --inset-bg-soft: rgba(255, 255, 255, 0.04);
  --code-bg: rgba(0, 0, 0, 0.32);
  --pre-bg: linear-gradient(
    160deg,
    rgba(48, 30, 18, 0.98),
    rgba(20, 13, 9, 0.98)
  );
  --icon-well: rgba(255, 255, 255, 0.04);
  --hover-fill: rgba(226, 150, 63, 0.12);
  --card-glow: rgba(255, 186, 110, 0.14);
  --btn-ghost-bg: rgba(255, 255, 255, 0.04);
  --brand-mark-bg: linear-gradient(140deg, #7a5330, #3a2415);
  --track-cover: linear-gradient(140deg, #7a5330, #3a2415);
  --ripple: rgba(255, 255, 255, 0.35);
  --ambient-1: rgba(226, 150, 63, 0.3);
  --ambient-2: rgba(150, 84, 30, 0.16);
  --ambient-3: rgba(190, 110, 40, 0.14);
  --ambient-4: rgba(226, 150, 63, 0.22);
  --ambient-core: rgba(255, 190, 120, 0.1);
  --r-sm: 10px;
  --r: 16px;
  --r-lg: 22px;
  --r-pill: 999px;
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-12: 48px;
  --sp-16: 64px;
  --sp-24: 96px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 18px 50px rgba(0, 0, 0, 0.45);
  --shadow-hi: 0 2px 6px rgba(0, 0, 0, 0.4), 0 28px 70px rgba(0, 0, 0, 0.6);
  --max: 1120px;
  --font:
    system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI",
    sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --dur: 0.45s;
  --ease: cubic-bezier(0.22, 0.68, 0.32, 1);
  color-scheme: dark;
}

/* 亮色：暖纸色底 + 深棕正文，保证正文/次级文字/边框对比清晰可读 */
html[data-theme="light"] {
  --bg: #f4ebe0;
  --bg-2: #fbf6ef;
  --surface: linear-gradient(
    155deg,
    rgba(255, 255, 255, 0.98),
    rgba(255, 249, 242, 0.99)
  );
  --surface-solid: #ffffff;
  --line: rgba(72, 42, 14, 0.18);
  --line-strong: rgba(120, 66, 14, 0.4);
  --text: #16100a;
  --text-2: rgba(22, 16, 10, 0.82);
  --text-3: rgba(22, 16, 10, 0.66);
  --brand: #a8550f;
  --brand-2: #7a3f0a;
  --brand-deep: #5c2f07;
  --glow: rgba(168, 85, 15, 0.18);
  --ok: #276420;
  --ok-fg: #1a4a15;
  --warn: #8a5a0c;
  --err: #9a2c1c;
  --err-fg: #7a1f14;
  --code-key: #7a3f0a;
  --code-str: #5c2f07;
  --code-com: #6a5a48;
  --code-fn: #a8550f;
  --code-txt: #24180f;
  --nav-bg: rgba(255, 252, 247, 0.94);
  --inset-bg: rgba(72, 42, 14, 0.07);
  --inset-bg-soft: rgba(72, 42, 14, 0.05);
  /* 实色代码底，避免半透明导致行内 code 对比度不足 */
  --code-bg: #efe0cf;
  --pre-bg: linear-gradient(160deg, #fffaf3, #efe2d0);
  --icon-well: rgba(180, 95, 18, 0.08);
  --hover-fill: rgba(180, 95, 18, 0.1);
  --card-glow: rgba(180, 95, 18, 0.1);
  --btn-ghost-bg: rgba(255, 255, 255, 0.7);
  --brand-mark-bg: linear-gradient(140deg, #f0c48a, #d0893a);
  --track-cover: linear-gradient(140deg, #f0c48a, #c87828);
  --ripple: rgba(140, 78, 18, 0.2);
  --ambient-1: rgba(210, 140, 60, 0.22);
  --ambient-2: rgba(180, 110, 50, 0.1);
  --ambient-3: rgba(200, 130, 60, 0.1);
  --ambient-4: rgba(210, 140, 60, 0.14);
  --ambient-core: rgba(255, 210, 150, 0.18);
  --shadow: 0 1px 2px rgba(60, 35, 15, 0.08), 0 14px 36px rgba(60, 35, 15, 0.1);
  --shadow-hi:
    0 2px 8px rgba(60, 35, 15, 0.1), 0 22px 48px rgba(60, 35, 15, 0.14);
  color-scheme: light;
}

html {
  color-scheme: dark light;
}

/* 显式重申暗色 token，避免从 light 切回时个别引擎残留覆盖 */
html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b0705;
  --bg-2: #120c08;
  --surface: linear-gradient(
    155deg,
    rgba(60, 38, 22, 0.55),
    rgba(24, 16, 11, 0.65)
  );
  --surface-solid: #181009;
  --line: rgba(214, 146, 80, 0.18);
  --line-strong: rgba(226, 155, 84, 0.42);
  --text: #f6ece2;
  --text-2: rgba(246, 236, 226, 0.78);
  --text-3: rgba(246, 236, 226, 0.58);
  --brand: #e2953f;
  --brand-2: #f3b96a;
  --brand-deep: #a55f1c;
  --nav-bg: rgba(26, 17, 11, 0.86);
  --inset-bg: rgba(0, 0, 0, 0.28);
  --inset-bg-soft: rgba(255, 255, 255, 0.04);
  --code-bg: rgba(0, 0, 0, 0.32);
  --pre-bg: linear-gradient(
    160deg,
    rgba(48, 30, 18, 0.98),
    rgba(20, 13, 9, 0.98)
  );
  --icon-well: rgba(255, 255, 255, 0.04);
  --hover-fill: rgba(226, 150, 63, 0.12);
  --btn-ghost-bg: rgba(255, 255, 255, 0.04);
  --brand-mark-bg: linear-gradient(140deg, #7a5330, #3a2415);
  --code-txt: #cbb49c;
  --ok-fg: #b7e09a;
  --err-fg: #f0a090;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 18px 50px rgba(0, 0, 0, 0.45);
  --shadow-hi: 0 2px 6px rgba(0, 0, 0, 0.4), 0 28px 70px rgba(0, 0, 0, 0.6);
  --ambient-1: rgba(226, 150, 63, 0.3);
  --ambient-2: rgba(150, 84, 30, 0.16);
  --ambient-3: rgba(190, 110, 40, 0.14);
  --ambient-4: rgba(226, 150, 63, 0.22);
  --ambient-core: rgba(255, 190, 120, 0.1);
  --card-glow: rgba(255, 186, 110, 0.14);
  --track-cover: linear-gradient(140deg, #7a5330, #3a2415);
  --ripple: rgba(255, 255, 255, 0.35);
}

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

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  overflow-wrap: anywhere;
  word-break: break-word;
  min-height: 100vh;
}

/* 固定氛围光晕 — 与参考页一致 */
.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 50% -6%, var(--ambient-1), transparent 62%),
    radial-gradient(700px 460px at 8% 32%, var(--ambient-2), transparent 65%),
    radial-gradient(760px 520px at 96% 62%, var(--ambient-3), transparent 66%),
    radial-gradient(
      1100px 620px at 50% 108%,
      var(--ambient-4),
      transparent 60%
    ),
    linear-gradient(180deg, var(--bg-2), var(--bg) 40%);
}

.ambient::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 50% 0%,
    var(--ambient-core),
    transparent 45%
  );
  animation: breathe 9s ease-in-out infinite;
}

@keyframes breathe {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 1;
  }
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

:focus-visible {
  outline: 2px solid var(--brand-2);
  outline-offset: 3px;
  border-radius: 6px;
}

/* 版心 */
.shell,
.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 64px;
  position: relative;
  z-index: 1;
}

/* 胶囊导航 */
.topbar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 10px 14px 10px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background-color: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  position: sticky;
  top: 14px;
  z-index: 60;
  margin: 14px auto 0;
  transition:
    padding 0.3s var(--ease),
    background-color 0.3s var(--ease),
    border-color 0.3s var(--ease),
    color 0.3s var(--ease);
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 15px;
  white-space: nowrap;
  min-width: 0;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: var(--brand-mark-bg);
  border: 1px solid var(--line-strong);
  flex: 0 0 auto;
  color: var(--brand-2);
}

html[data-theme="light"] .brand-mark {
  color: #3a1f08;
}

.brand-mark .icon {
  width: 16px;
  height: 16px;
  color: var(--brand-2);
}

/* SVG icon system */
.icon {
  width: 1em;
  height: 1em;
  display: inline-block;
  flex: 0 0 auto;
  color: currentColor;
  fill: none;
  stroke: currentColor;
  vertical-align: -0.125em;
}

.icon-lg {
  width: 22px;
  height: 22px;
}

.icon-xl {
  width: 28px;
  height: 28px;
}

.feature-icon {
  width: 40px;
  height: 40px;
  margin: 0 0 16px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--icon-well);
  color: var(--brand-2);
  position: relative;
  z-index: 1;
}

.feature-icon .icon {
  width: 20px;
  height: 20px;
}

.endpoint-icon {
  width: 34px;
  height: 34px;
  margin-bottom: 12px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--inset-bg);
  color: var(--brand-2);
  position: relative;
  z-index: 1;
}

.endpoint-icon .icon {
  width: 17px;
  height: 17px;
}

.btn .icon {
  width: 15px;
  height: 15px;
  min-width: 15px;
  min-height: 15px;
  flex: 0 0 15px;
}

.brand-copy {
  display: grid;
  gap: 1px;
  min-width: 0;
}

.brand-copy strong {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand-copy span {
  color: var(--text-3);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
  margin-left: auto;
  background: transparent;
  border: 0;
  box-shadow: none;
  padding: 0;
  position: static;
  backdrop-filter: none;
}

/* topbar 内的 .nav 覆盖上面通用 .nav 作为胶囊容器时的冲突：
   结构是 .topbar > .brand + .nav，所以 topbar 是胶囊，内部 nav 是链接组 */
.topbar {
  max-width: 960px;
}

.topbar .nav {
  margin-left: auto;
}

.nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-2);
  padding: 6px 10px;
  border-radius: var(--r-pill);
  transition:
    color 0.25s ease,
    background 0.25s ease;
  white-space: nowrap;
}

.nav a .icon {
  width: 14px;
  height: 14px;
  min-width: 14px;
  color: currentColor;
  opacity: 0.9;
}

.nav a:hover,
.nav a:focus-visible,
.nav a[aria-current="page"] {
  color: var(--brand-2);
  background: var(--hover-fill);
  outline: none;
  box-shadow: none;
}

/* 主题切换 */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin-left: 4px;
  padding: 0;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--btn-ghost-bg);
  color: var(--brand-2);
  cursor: pointer;
  flex: 0 0 auto;
  transition:
    transform 0.25s var(--ease),
    border-color 0.25s var(--ease),
    background 0.25s var(--ease),
    color 0.25s var(--ease);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  background: var(--hover-fill);
  outline: none;
}

.theme-toggle .icon {
  width: 16px;
  height: 16px;
}

.theme-toggle .icon-moon {
  display: none;
}

html[data-theme="light"] .theme-toggle .icon-sun {
  display: none;
}

html[data-theme="light"] .theme-toggle .icon-moon {
  display: inline-block;
}

.toc a {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc a .icon {
  width: 14px;
  height: 14px;
  min-width: 14px;
  color: var(--brand-2);
  opacity: 0.85;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: 40px;
  align-items: stretch;
  padding: 74px 0 40px;
  position: relative;
}

.hero-card,
.panel,
.stat,
.endpoint,
.feature,
.console-card,
.card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--surface);
  box-shadow: var(--shadow);
  transition:
    transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
  overflow: hidden;
  min-width: 0;
}

/* 调试台卡片需完整展示结果列表，不能裁切 */
.console-card {
  overflow: visible;
}

.hero-card::before,
.panel::before,
.stat::before,
.endpoint::before,
.feature::before,
.console-card::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
  background: radial-gradient(
    320px 220px at var(--mx, 50%) var(--my, 50%),
    var(--card-glow),
    transparent 70%
  );
  z-index: 0;
}

.feature:hover,
.endpoint:hover,
.stat:hover,
.console-card:hover,
.track:hover,
.panel:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-hi);
}

.feature:hover::before,
.endpoint:hover::before,
.stat:hover::before,
.console-card:hover::before,
.panel:hover::before {
  opacity: 1;
}

.hero-card {
  padding: 30px 28px 34px;
}

.hero-card::after {
  content: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-3);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 4px rgba(226, 150, 63, 0.18);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 {
  margin-top: 14px;
  font-size: clamp(32px, 5vw, 46px);
  max-width: 14ch;
}

.lede,
.lead {
  color: var(--text-2);
  font-size: 15px;
  margin: 18px 0 0;
  max-width: 460px;
}

.grad {
  background: linear-gradient(92deg, var(--brand-2), var(--brand) 55%, #c9762a);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.actions,
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-direction: row;
  gap: 8px;
  min-height: 44px;
  padding: 11px 22px;
  border-radius: var(--r-pill);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--line-strong);
  color: var(--text);
  background: var(--btn-ghost-bg);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  white-space: nowrap;
  width: auto;
  max-width: none;
  transition:
    transform 0.25s var(--ease),
    background 0.25s var(--ease),
    border-color 0.25s var(--ease),
    box-shadow 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
  border-color: var(--brand);
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn-primary {
  background: linear-gradient(96deg, #f0b268, #d9862f);
  color: #2a1503;
  border-color: transparent;
}

.btn-primary::after {
  content: "";
  position: absolute;
  top: 0;
  left: -140%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    100deg,
    transparent,
    rgba(255, 255, 255, 0.5),
    transparent
  );
  animation: sweep 3.6s linear infinite;
}

@keyframes sweep {
  0% {
    left: -140%;
  }
  55%,
  100% {
    left: 140%;
  }
}

.btn-secondary,
.btn-ghost {
  background: var(--btn-ghost-bg);
  border-color: var(--line-strong);
  color: var(--text);
}

html[data-theme="light"] .btn-primary {
  color: #2a1503;
  box-shadow: 0 8px 20px rgba(180, 95, 18, 0.22);
}

.status-panel {
  padding: 26px 24px 30px;
  display: grid;
  gap: 16px;
  align-content: start;
}

.status-panel h2 {
  font-size: 18px;
}

.status-list {
  display: grid;
  gap: 12px;
}

.status-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--inset-bg);
  border: 1px solid var(--line);
  transition:
    transform 0.25s var(--ease),
    border-color 0.25s var(--ease);
}

.status-row:hover {
  transform: translateX(3px);
  border-color: var(--line-strong);
}

.status-row span:first-child {
  color: var(--text-2);
  font-size: 13px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  font-size: 11px;
  font-family: var(--mono);
  border: 1px solid var(--line);
  background: var(--hover-fill);
  color: var(--brand-2);
}

.pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.pill.ok {
  color: var(--ok-fg);
  background: color-mix(in srgb, var(--ok) 16%, transparent);
  border-color: color-mix(in srgb, var(--ok) 40%, transparent);
}

.pill.warn {
  color: var(--brand-2);
  background: var(--hover-fill);
  border-color: var(--line-strong);
}

.pill.err {
  color: var(--err-fg);
  background: color-mix(in srgb, var(--err) 14%, transparent);
  border-color: color-mix(in srgb, var(--err) 40%, transparent);
}

.pill.idle {
  color: var(--text-3);
  background: var(--inset-bg-soft);
}

.section {
  padding: var(--sp-16) 0 0;
  position: relative;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
  margin-bottom: var(--sp-8);
}

.section-head h2 {
  font-size: 28px;
}

.section-head p {
  margin: 8px 0 0;
  color: var(--text-2);
  font-size: 14px;
  max-width: 560px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.grid-3 > :first-child {
  grid-column: span 1;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.feature,
.endpoint,
.stat {
  padding: 26px 24px 30px;
}

.feature h3,
.endpoint h3 {
  font-size: 18px;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.feature p,
.endpoint p,
.stat p {
  margin: 0;
  color: var(--text-2);
  font-size: 14px;
  position: relative;
  z-index: 1;
}

.feature .tag,
.method {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  background: var(--hover-fill);
  color: var(--brand-2);
  border: 1px solid var(--line-strong);
  position: relative;
  z-index: 1;
}

.method.get {
  background: var(--hover-fill);
  color: var(--brand-2);
  border-color: var(--line-strong);
}

.stat strong {
  display: block;
  font-size: 30px;
  font-weight: 700;
  color: var(--brand-2);
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
}

code,
.mono {
  font-family: var(--mono);
}

code {
  font-size: 0.9em;
  padding: 0.1rem 0.35rem;
  border-radius: 6px;
  background: var(--code-bg);
  border: 1px solid var(--line);
  color: var(--brand-2);
}

pre {
  margin: 0;
  padding: 14px 16px;
  overflow: auto;
  border-radius: 14px;
  background: var(--pre-bg);
  border: 1px solid var(--line-strong);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.75;
  color: var(--code-txt);
  box-shadow: var(--shadow);
}

pre code {
  background: transparent;
  border: 0;
  padding: 0;
  color: inherit;
}

.docs-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 26px;
  margin-top: 40px;
}

.toc {
  position: sticky;
  top: 84px;
  align-self: start;
  padding: 18px;
  border-radius: var(--r);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.toc h2 {
  font-size: 13px;
  margin-bottom: 12px;
  color: var(--text-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.toc a {
  display: block;
  padding: 9px 10px;
  border-radius: 10px;
  color: var(--text-2);
  font-size: 13px;
  transition:
    color 0.25s ease,
    background 0.25s ease;
}

.toc a:hover,
.toc a:focus-visible {
  color: var(--brand-2);
  background: var(--hover-fill);
  outline: none;
}

.docs-main {
  display: grid;
  gap: 16px;
}

.doc-block {
  padding: 26px 24px 30px;
}

.doc-block h2 {
  font-size: 22px;
  margin-bottom: 10px;
}

.doc-block h3 {
  font-size: 15px;
  margin: 18px 0 8px;
}

.doc-block p,
.doc-block li {
  color: var(--text-2);
  font-size: 14px;
}

.doc-block ul {
  margin: 8px 0 0;
  padding-left: 1.15rem;
}

.table-wrap {
  overflow: auto;
  border-radius: 12px;
  border: 1px solid var(--line);
  margin-top: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
}

th,
td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  color: var(--text-3);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--inset-bg);
  font-weight: 600;
}

td {
  color: var(--text-2);
  font-size: 13px;
}

.console {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 20px;
  margin-top: 40px;
  align-items: start;
}

.console-card {
  padding: 22px;
}

.console-card h2 {
  font-size: 16px;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

/* HTML hidden 必须真正隐藏；.field 的 display:grid 会盖掉 UA [hidden] */
[hidden] {
  display: none !important;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.field label {
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  max-width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  background-color: var(--inset-bg);
  padding: 11px 12px;
  outline: none;
  color: var(--text);
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

/* 避免 checkbox/radio 被 width:100% 拉成整行 */
.field input[type="checkbox"],
.field input[type="radio"] {
  width: 1rem;
  height: 1rem;
  min-width: 1rem;
  max-width: 1rem;
  padding: 0;
  margin: 0;
  border-radius: 4px;
  accent-color: var(--brand);
  flex: 0 0 auto;
}

.field label:has(input[type="checkbox"]),
.field label:has(input[type="radio"]) {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  max-width: 100%;
  font-size: 13px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--text-2);
  cursor: pointer;
  line-height: 1.4;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--text-3);
  opacity: 1;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 18%, transparent);
}

.field select {
  cursor: pointer;
}

.field select option {
  color: var(--text);
  background-color: var(--surface-solid);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.field-row > .field {
  min-width: 0;
}

.hint {
  color: var(--text-3);
  font-size: 12px;
  margin: -4px 0 14px;
  position: relative;
  z-index: 1;
}

.response-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.response-meta .pill {
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
  white-space: normal;
  line-height: 1.35;
}

#response-body {
  max-height: min(50vh, 420px);
  overflow: auto;
  background-color: var(--surface-solid);
  background-image: var(--pre-bg);
}

.result-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
  position: relative;
  z-index: 1;
}

.track {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--inset-bg);
  transition:
    transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.track:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}

.track img,
.track-fallback {
  width: 64px;
  height: 64px;
  border-radius: 10px;
  object-fit: cover;
  background: var(--track-cover);
}

.track h3 {
  font-size: 14px;
  margin-bottom: 4px;
  font-weight: 600;
}

.track p {
  margin: 0;
  color: var(--text-3);
  font-size: 12px;
}

.track-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

.mini-btn {
  border: 1px solid var(--line);
  background: var(--btn-ghost-bg);
  border-radius: var(--r-pill);
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text-2);
  transition:
    transform 0.25s var(--ease),
    border-color 0.25s var(--ease),
    color 0.25s var(--ease);
}

.mini-btn:hover,
.mini-btn:focus-visible {
  transform: translateY(-1px);
  border-color: var(--brand);
  color: var(--brand-2);
  outline: none;
}

.player {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--inset-bg);
  display: none;
  gap: 10px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.player.active {
  display: grid;
}

.player audio {
  width: 100%;
}

.footer {
  margin-top: 64px;
  padding: 28px 0 10px;
  border-top: 1px solid var(--line);
  color: var(--text-3);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
}

.kicker {
  color: var(--text-2);
  font-size: 13px;
}

.notice {
  margin-top: 22px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--hover-fill);
  color: var(--text-2);
  font-size: 13px;
}

.notice code {
  color: var(--brand-2);
}

/* 空状态 */
.empty {
  padding: 42px 24px;
  border-radius: var(--r);
  border: 1px dashed var(--line);
  color: var(--text-3);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  background: var(--inset-bg-soft);
}

.empty svg,
.empty .icon {
  width: 72px;
  height: 72px;
  opacity: 0.55;
  color: var(--brand);
}

.empty p {
  margin: 0;
  max-width: 28rem;
  line-height: 1.55;
  font-size: 13px;
}

/* 骨架屏 */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.skeleton {
  background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--brand) 8%, transparent) 25%,
    color-mix(in srgb, var(--brand) 18%, transparent) 50%,
    color-mix(in srgb, var(--brand) 8%, transparent) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.8s ease-in-out infinite;
  border-radius: 8px;
  color: transparent !important;
  pointer-events: none;
  user-select: none;
}

.skeleton::before,
.skeleton::after,
.skeleton * {
  visibility: hidden;
}

.skeleton-line {
  height: 0.85em;
  margin-bottom: 0.55rem;
  border-radius: 6px;
}

.skeleton-block {
  height: 4rem;
  border-radius: 12px;
}

.skeleton-circle {
  width: 64px;
  height: 64px;
  border-radius: 10px;
  flex-shrink: 0;
}

/* 滚动入场（可选） */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.7s var(--ease),
    transform 0.7s var(--ease);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

@media (max-width: 1024px) {
  .hero,
  .docs-layout,
  .console {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .hero {
    padding-top: 48px;
  }

  h1 {
    max-width: none;
    font-size: 34px;
  }
}

@media (max-width: 960px) {
  .grid-3,
  .grid-2,
  .field-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .toc {
    position: static;
  }
}

@media (max-width: 768px) {
  .shell,
  .wrap {
    padding: 0 16px 48px;
  }

  .topbar {
    flex-wrap: wrap;
    border-radius: 18px;
    gap: 10px;
    padding: 10px 12px;
  }

  .topbar .nav {
    width: 100%;
    justify-content: flex-start;
    gap: 4px;
  }

  .theme-toggle {
    margin-left: auto;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .track {
    grid-template-columns: 56px minmax(0, 1fr);
  }

  .track-actions {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}