/* ==========================================================================
   APITools 官网 · 深色科技风设计系统
   --------------------------------------------------------------------------
   单文件、零依赖、零外链字体（离线也能正常显示）。
   约定：所有颜色走下面的 CSS 变量，改主题只改这一处。
   ========================================================================== */

/* ---------------------------------- 变量 ---------------------------------- */
:root {
  --bg-0: #05070d;
  --bg-1: #080c15;
  --bg-2: #0b1120;

  --surface: rgba(255, 255, 255, 0.038);
  --surface-2: rgba(255, 255, 255, 0.065);
  --surface-3: rgba(255, 255, 255, 0.09);

  --border: rgba(255, 255, 255, 0.085);
  --border-2: rgba(255, 255, 255, 0.16);

  --text: #e8eef8;
  --text-2: #a7b4c8;
  --text-3: #6d7b91;

  --cyan: #35d0ff;
  --violet: #7c5cff;
  --green: #3ddc97;
  --amber: #ffb545;
  --pink: #ff6b9d;
  --red: #ff6b6b;

  --grad: linear-gradient(120deg, #35d0ff 0%, #7c5cff 100%);
  --grad-soft: linear-gradient(120deg, rgba(53, 208, 255, 0.16), rgba(124, 92, 255, 0.16));

  --r-sm: 8px;
  --r: 14px;
  --r-lg: 20px;

  --shadow: 0 18px 50px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 0 0 1px rgba(53, 208, 255, 0.22), 0 16px 50px rgba(53, 208, 255, 0.1);

  --maxw: 1180px;

  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei UI',
    'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', Roboto, Helvetica, Arial, sans-serif;
  --mono: 'Cascadia Mono', 'JetBrains Mono', Consolas, 'SFMono-Regular', Menlo, Monaco,
    'Courier New', monospace;
}

/* --------------------------------- 基础重置 -------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg-0);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 全站背景：顶部两团光晕 + 细网格，纯 CSS，不用图片 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 460px at 12% -6%, rgba(53, 208, 255, 0.16), transparent 62%),
    radial-gradient(820px 420px at 88% 2%, rgba(124, 92, 255, 0.16), transparent 60%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 45%, var(--bg-0) 100%);
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(1100px 620px at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(1100px 620px at 50% 0%, #000 20%, transparent 78%);
  pointer-events: none;
}

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

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

a:hover {
  color: #7fe0ff;
}

h1, h2, h3, h4 {
  margin: 0;
  line-height: 1.25;
  letter-spacing: -0.015em;
  font-weight: 650;
}

p {
  margin: 0;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

::selection {
  background: rgba(53, 208, 255, 0.3);
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 11px;
  height: 11px;
}
::-webkit-scrollbar-track {
  background: #05070d;
}
::-webkit-scrollbar-thumb {
  background: #1d2637;
  border-radius: 8px;
  border: 3px solid #05070d;
}
::-webkit-scrollbar-thumb:hover {
  background: #2b3850;
}

/* --------------------------------- 版式工具 -------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
  position: relative;
}

.section-sm {
  padding: 64px 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 16px;
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--grad);
}

.h1 {
  font-size: clamp(34px, 5.4vw, 60px);
  font-weight: 700;
}

.h2 {
  font-size: clamp(26px, 3.4vw, 38px);
}

.h3 {
  font-size: 19px;
}

.lead {
  color: var(--text-2);
  font-size: clamp(16px, 1.6vw, 18.5px);
  max-width: 66ch;
}

.muted {
  color: var(--text-2);
}

.dim {
  color: var(--text-3);
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

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

.section-head {
  margin-bottom: 48px;
}

.section-head .lead {
  margin-top: 16px;
}

/* ----------------------------------- 导航 ---------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(5, 7, 13, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s, background 0.25s;
}

.nav.is-stuck {
  border-bottom-color: var(--border);
  background: rgba(5, 7, 13, 0.9);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 650;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

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

.brand-mark {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
}

.brand-sub {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 1px 7px;
  margin-left: 2px;
}

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

.nav-links a {
  color: var(--text-2);
  font-size: 14.5px;
  padding: 8px 13px;
  border-radius: 9px;
  transition: color 0.18s, background 0.18s;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--surface);
}

.nav-links a.is-active {
  color: var(--text);
  background: var(--surface-2);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 36px;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  cursor: pointer;
}

/* ----------------------------------- 按钮 ---------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 44px;
  padding: 0 20px;
  border-radius: 11px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 550;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.16s, box-shadow 0.2s, background 0.2s, border-color 0.2s, color 0.2s;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--grad);
  color: #04070e;
  font-weight: 650;
  box-shadow: 0 10px 30px rgba(53, 208, 255, 0.22);
}

.btn-primary:hover {
  color: #04070e;
  box-shadow: 0 14px 38px rgba(53, 208, 255, 0.34);
  transform: translateY(-1px);
}

.btn-ghost {
  background: var(--surface);
  border-color: var(--border-2);
  color: var(--text);
}

.btn-ghost:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.26);
}

.btn-sm {
  height: 36px;
  padding: 0 14px;
  font-size: 14px;
  border-radius: 9px;
}

.btn-lg {
  height: 50px;
  padding: 0 26px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn[disabled] {
  opacity: 0.5;
  pointer-events: none;
}

/* ----------------------------------- Hero --------------------------------- */
.hero {
  padding: 78px 0 72px;
  text-align: center;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 26px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 12px;
}

.pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px currentColor;
  color: var(--green);
}

.pill.is-cyan .dot { background: var(--cyan); color: var(--cyan); }
.pill.is-violet .dot { background: var(--violet); color: var(--violet); }
.pill.is-amber .dot { background: var(--amber); color: var(--amber); }

.hero .lead {
  margin: 20px auto 0;
  text-align: center;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 34px;
}

.hero-note {
  margin-top: 18px;
  font-size: 13.5px;
  color: var(--text-3);
}

/* --------------------------- 首页的界面模拟窗（纯 CSS） --------------------------- */
.mock {
  margin-top: 58px;
  border: 1px solid var(--border-2);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, #0c1220, #080c15);
  box-shadow: var(--shadow), 0 0 90px rgba(53, 208, 255, 0.08);
  overflow: hidden;
  text-align: left;
}

.mock-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.028);
}

.mock-dots {
  display: flex;
  gap: 6px;
}

.mock-dots i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #2b3346;
}

.mock-dots i:nth-child(1) { background: #ff5f57; }
.mock-dots i:nth-child(2) { background: #febc2e; }
.mock-dots i:nth-child(3) { background: #28c840; }

.mock-url {
  flex: 1;
  text-align: center;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mock-body {
  display: grid;
  grid-template-columns: 216px minmax(0, 1fr) minmax(0, 1fr);
  min-height: 372px;
}

.mock-col {
  padding: 14px;
  min-width: 0;
}

.mock-col + .mock-col {
  border-left: 1px solid var(--border);
}

.mock-h {
  font-size: 11px;
  font-family: var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 11px;
}

.tree-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-2);
  padding: 6px 8px;
  border-radius: 7px;
  margin-bottom: 2px;
}

.tree-item.is-active {
  background: var(--grad-soft);
  color: var(--text);
  box-shadow: inset 0 0 0 1px rgba(53, 208, 255, 0.22);
}

.tree-item .m {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  color: var(--text-3);
  flex-shrink: 0;
}

.m-get { color: var(--green) !important; }
.m-post { color: var(--amber) !important; }
.m-put { color: var(--cyan) !important; }
.m-del { color: var(--red) !important; }

.mock-reqbar {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.chip {
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 4px 9px;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-2);
}

.chip.is-on {
  background: rgba(53, 208, 255, 0.16);
  border-color: rgba(53, 208, 255, 0.4);
  color: #bdefff;
}

.mock-input {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12.5px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-2);
  border-radius: 9px;
  padding: 9px 11px;
  margin-bottom: 12px;
  color: var(--text-2);
  overflow: hidden;
}

.mock-input .u {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.code {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.85;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 13px;
  overflow: auto;
  color: #cfe3ff;
  white-space: pre;
  tab-size: 2;
}

.code .k { color: #7c9bff; }
.code .s { color: #6ee7a8; }
.code .n { color: #ffb545; }
.code .c { color: #5d6b82; }

.mock-status {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 12px;
}

.ok-200 {
  color: #041018;
  background: var(--green);
  border-radius: 6px;
  padding: 3px 8px;
  font-weight: 700;
}

.mock-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.metric {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 9px 10px;
}

.metric b {
  display: block;
  font-family: var(--mono);
  font-size: 16px;
  color: var(--cyan);
  font-weight: 650;
}

.metric span {
  font-size: 11px;
  color: var(--text-3);
}

.mock-cap {
  text-align: center;
  font-size: 12.5px;
  color: var(--text-3);
  margin-top: 16px;
}

/* -------------------------------- 通用卡片 -------------------------------- */
.grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

/* grid / flex 子项的 min-width 默认是 auto：内部只要有一个不可折行的块（最典型就是
   代码块——`white-space: pre` 让它有巨大的 min-content 宽度），整列就会被撑出视口，
   症状是"窄屏下整页能横向拖动"。这条在渲染验证里抓到过（features/download 两页 420px 下被撑到 810px）。 */
.grid > *,
.block > *,
.step > *,
.mock-body > *,
.mock-reqbar > *,
.footer-grid > *,
.hero-actions > *,
.cta-actions > *,
.anchors > * {
  min-width: 0;
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 24px;
  position: relative;
  transition: border-color 0.22s, background 0.22s, transform 0.22s;
}

.card:hover {
  border-color: var(--border-2);
  background: var(--surface-2);
  transform: translateY(-2px);
}

.card-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-soft);
  border: 1px solid rgba(53, 208, 255, 0.24);
  color: var(--cyan);
  margin-bottom: 16px;
}

.card-icon svg {
  width: 19px;
  height: 19px;
}

.card h3 {
  margin-bottom: 9px;
}

.card p {
  color: var(--text-2);
  font-size: 14.5px;
}

.card-num {
  position: absolute;
  top: 20px;
  right: 22px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-3);
}

/* 能力大块（功能页） */
.block {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 44px;
  align-items: center;
  padding: 54px 0;
}

.block + .block {
  border-top: 1px solid var(--border);
}

.block.flip .block-text {
  order: 2;
}

.block-text h3 {
  font-size: clamp(21px, 2.4vw, 27px);
  margin-bottom: 14px;
}

.block-text > p {
  color: var(--text-2);
  margin-bottom: 20px;
}

.ticks {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 11px;
}

/* 这里刻意**不用 flex**：li 一旦是 nowrap 的 flex 容器，它的 min-content 贡献会按整行
   文本算，放进 grid 轨道就会把轨道撑到好几百 px（窄屏实测被撑到 792px、整页横向滚动）。
   块级 + 绝对定位的对勾，换行行为跟普通段落一致。 */
.ticks li {
  display: block;
  position: relative;
  padding-left: 28px;
  min-width: 0;
  overflow-wrap: anywhere;
  font-size: 14.5px;
  color: var(--text-2);
}

.ticks li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: rgba(61, 220, 151, 0.14);
  box-shadow: inset 0 0 0 1px rgba(61, 220, 151, 0.4);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%233ddc97' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3.5 8.4l3 3 6-6.6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 12px;
}

.ticks li b {
  color: var(--text);
  font-weight: 600;
}

/* --------------------------------- 代码块 --------------------------------- */
.codewrap {
  position: relative;
  max-width: 100%;
  min-width: 0;
}

.codewrap .code {
  padding-right: 56px;
  max-width: 100%;
}

.copy-btn {
  position: absolute;
  top: 9px;
  right: 9px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-2);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 4px 9px;
  cursor: pointer;
  transition: color 0.18s, background 0.18s;
}

.copy-btn:hover {
  color: var(--text);
  background: var(--surface-3);
}

.copy-btn.is-done {
  color: var(--green);
  border-color: rgba(61, 220, 151, 0.4);
}

/* --------------------------------- 数据表 --------------------------------- */
.table-wrap {
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 520px;
}

th, td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 600;
  background: rgba(255, 255, 255, 0.022);
}

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

tbody tr:hover {
  background: rgba(255, 255, 255, 0.022);
}

td code, .inline-code {
  font-family: var(--mono);
  font-size: 12.8px;
  background: rgba(0, 0, 0, 0.38);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 7px;
  color: #bfe6ff;
  white-space: nowrap;
}

/* --------------------------------- 价格卡 --------------------------------- */
.price-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.price-card.is-featured {
  border-color: rgba(53, 208, 255, 0.34);
  background: linear-gradient(180deg, rgba(53, 208, 255, 0.07), rgba(124, 92, 255, 0.05));
  box-shadow: var(--shadow-glow);
}

.price-tag {
  position: absolute;
  top: -12px;
  left: 26px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--grad);
  color: #04070e;
  font-weight: 700;
  border-radius: 999px;
  padding: 4px 12px;
}

.price-name {
  font-size: 17px;
  margin-bottom: 6px;
}

.price-desc {
  font-size: 13.5px;
  color: var(--text-3);
  min-height: 42px;
}

.price-amount {
  display: flex;
  align-items: baseline;
  gap: 7px;
  margin: 18px 0 6px;
}

.price-amount b {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-family: var(--mono);
}

.price-amount span {
  color: var(--text-3);
  font-size: 13.5px;
}

.price-card .ticks {
  margin: 22px 0 26px;
}

.price-card .ticks li {
  font-size: 14px;
}

.price-card .btn {
  margin-top: auto;
}

/* --------------------------------- 步骤条 --------------------------------- */
.steps {
  counter-reset: step;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 20px 22px;
  min-width: 0;
}

.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan);
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 11px;
  background: var(--grad-soft);
  border: 1px solid rgba(53, 208, 255, 0.24);
}

.step h3 {
  font-size: 16.5px;
  margin-bottom: 7px;
}

.step p {
  color: var(--text-2);
  font-size: 14.5px;
}

.step .codewrap {
  margin-top: 12px;
}

/* --------------------------------- 提示条 --------------------------------- */
.notice {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  border: 1px solid var(--border);
  border-left: 3px solid var(--amber);
  background: rgba(255, 181, 69, 0.055);
  border-radius: var(--r-sm);
  padding: 16px 18px;
  font-size: 14.5px;
  color: var(--text-2);
}

.notice.is-cyan {
  border-left-color: var(--cyan);
  background: rgba(53, 208, 255, 0.055);
}

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

.notice-icon {
  flex-shrink: 0;
  color: var(--amber);
  margin-top: 3px;
}

.notice.is-cyan .notice-icon {
  color: var(--cyan);
}

/* --------------------------------- CTA 区 -------------------------------- */
.cta {
  border: 1px solid var(--border-2);
  border-radius: var(--r-lg);
  padding: 54px 40px;
  text-align: center;
  background:
    radial-gradient(600px 240px at 50% 0%, rgba(53, 208, 255, 0.14), transparent 70%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015));
}

.cta .lead {
  margin: 16px auto 0;
  text-align: center;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 30px;
}

/* --------------------------------- 页头 ---------------------------------- */
.page-head {
  padding: 68px 0 6px;
}

.page-head .h1 {
  font-size: clamp(30px, 4.2vw, 46px);
}

.page-head .lead {
  margin-top: 18px;
}

.anchors {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.anchors a {
  font-size: 14px;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 15px;
  transition: color 0.18s, border-color 0.18s, background 0.18s;
}

.anchors a:hover {
  color: var(--text);
  background: var(--surface-2);
  border-color: var(--border-2);
}

/* ------------------------------ 迷你柱状图（压测示意） ------------------------------ */
.bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 132px;
  padding: 12px 12px 0;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.bars i {
  display: block;
  flex: 1;
  height: 42%;
  border-radius: 2px 2px 0 0;
  background: linear-gradient(180deg, #35d0ff, rgba(124, 92, 255, 0.55));
}

.bars i:nth-child(2n) { height: 63%; }
.bars i:nth-child(3n) { height: 84%; }
.bars i:nth-child(5n) { height: 55%; }
.bars i:nth-child(7n) { height: 96%; }
.bars i:nth-child(11n) { height: 33%; }

.bars.is-warm i {
  background: linear-gradient(180deg, #ffb545, rgba(255, 107, 107, 0.5));
}

.chart-cap {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-3);
  margin-top: 9px;
}

/* ------------------------------ 表格内的小图例 ------------------------------ */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 13px;
  color: var(--text-3);
  margin-top: 16px;
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.legend i {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  display: block;
}

.legend .c-cyan { background: var(--cyan); }
.legend .c-violet { background: var(--violet); }
.legend .c-green { background: var(--green); }
.legend .c-amber { background: var(--amber); }
.legend .c-red { background: var(--red); }
.legend .c-pink { background: var(--pink); }

/* ---------------------------------- FAQ ---------------------------------- */
.faq {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 17px 22px;
  transition: border-color 0.2s, background 0.2s;
}

.faq details:hover {
  border-color: var(--border-2);
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 15.5px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: '+';
  font-family: var(--mono);
  font-size: 19px;
  line-height: 1;
  color: var(--cyan);
  flex-shrink: 0;
}

.faq details[open] summary::after {
  content: '−';
}

.faq details[open] summary {
  margin-bottom: 12px;
}

.faq .answer {
  color: var(--text-2);
  font-size: 14.5px;
  min-width: 0;
  overflow-wrap: anywhere;
}

.faq .answer p + p {
  margin-top: 10px;
}

.faq .answer .codewrap {
  margin-top: 12px;
}

/* ------------------------------ 下载 / 获取方式 ------------------------------ */
.dl-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.dl-head .card-icon {
  margin-bottom: 0;
}

.dl-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 22px;
}

/* ---------------------------------- 页脚 --------------------------------- */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 40px;
  padding: 54px 0 34px;
  background: rgba(0, 0, 0, 0.28);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 36px;
}

.footer-brand p {
  color: var(--text-3);
  font-size: 13.8px;
  margin-top: 14px;
  max-width: 34ch;
}

.footer h4 {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 16px;
  font-weight: 600;
}

.footer li {
  margin-bottom: 10px;
}

.footer li a {
  color: var(--text-2);
  font-size: 14.2px;
}

.footer li a:hover {
  color: var(--cyan);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  margin-top: 40px;
  padding-top: 24px;
  font-size: 13px;
  color: var(--text-3);
}

/* ------------------------------- 滚动入场动画 ------------------------------
   注意隐藏规则挂在 html.js 下：<head> 里有一行内联脚本给 <html> 加 js 类。
   为什么不直接写 .reveal{opacity:0}——JS 一旦没跑起来（被拦、报错、浏览器禁用），
   opacity:0 就等于"整页空白"，而页面上的内容明明是好的。宁可没有动画，也不能没内容。 */
html.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

html.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001ms !important; }
}

/* --------------------------------- 响应式 --------------------------------- */
@media (max-width: 1040px) {
  .mock-body { grid-template-columns: 190px 1fr; }
  .mock-col.mock-col-res { display: none; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .block { grid-template-columns: 1fr; gap: 30px; }
  .block.flip .block-text { order: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px 20px 18px;
    background: rgba(5, 7, 13, 0.97);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 11px 12px; font-size: 15px; }
  .nav-cta .btn-ghost { display: none; }
  .section { padding: 68px 0; }
  .hero { padding: 52px 0 56px; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .mock-body { grid-template-columns: 1fr; }
  .mock-col + .mock-col { border-left: none; border-top: 1px solid var(--border); }
  .mock-col-side { display: none; }
  .cta { padding: 40px 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .grid-4 { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .nav-cta .btn { width: auto; }
  .hero-actions, .cta-actions { flex-direction: column; }
  .step { grid-template-columns: 1fr; }
  .mock-metrics { grid-template-columns: 1fr 1fr; }
}