/**
 * Matter 品牌视觉 — 黑白灰 only。
 *
 * 共性：官网订购 + 桌面办案；文档三栏；个人主页用量/账单。
 * 专属：案卷隐喻、本机优先；色板纯黑白灰（不用品牌绿）。
 */
:root {
  --ink: #0a0a0a;
  --ink-soft: #1f1f1f;
  --mute: #5c5c5c;
  --mute-2: #8a8a8a;
  --paper: #f5f5f5;
  --paper-2: #ebebeb;
  --bg: #fafafa;
  --line: #e5e5e5;
  --line-strong: #d0d0d0;
  --seal: #0a0a0a;
  --seal-soft: #f0f0f0;
  --seal-ink: #ffffff;
  --danger: #111111;
  --ok: #0a0a0a;
  --ok-soft: #f0f0f0;
  --warn-soft: #f5f5f5;
  --card: #ffffff;
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.04), 0 18px 48px rgba(0, 0, 0, 0.06);
  --font-brand: "Iowan Old Style", "Palatino Linotype", "Songti SC", "STSong", Georgia, serif;
  --font-ui: "Avenir Next", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius: 8px;
  --radius-sm: 6px;
  font-family: var(--font-ui);
  color: var(--ink);
  background: var(--bg);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
}

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

button,
input,
select {
  font: inherit;
}

/* —— 顶栏 —— */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 20px;
  height: 60px;
  padding: 0 36px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-brand);
  font-weight: 600;
  font-size: 24px;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.logo .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--seal);
  align-self: center;
  margin-left: 2px;
}

.logo .mark {
  display: none;
}

.nav-links {
  display: flex;
  gap: 2px;
  flex: 1;
}

.nav-links a {
  padding: 8px 12px;
  font-size: 14px;
  color: var(--mute);
  border-radius: var(--radius-sm);
  position: relative;
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-links a.is-active {
  color: var(--ink);
  font-weight: 600;
}

.nav-links a.is-active::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  background: var(--seal);
  border-radius: 1px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  padding: 9px 16px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.2;
  background: var(--paper);
  color: var(--ink);
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary,
.btn-dark {
  background: var(--ink);
  color: #f7f5f0;
  border-color: var(--ink);
}

.btn-primary:hover,
.btn-dark:hover {
  background: var(--ink-soft);
}

.btn-seal {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.btn-seal:hover {
  background: var(--ink-soft);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
}

.btn-outline {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}

.btn-danger {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.avatar-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--seal);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 650;
  border: 0;
  cursor: pointer;
  font-family: var(--font-brand);
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--mute);
  font-size: 13px;
  padding: 6px 8px;
}

/* —— 公告条 —— */
.announce {
  background: var(--ink);
  color: #e8e4da;
  text-align: center;
  font-size: 13px;
  padding: 9px 20px;
  line-height: 1.45;
}

.announce a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* —— Landing —— */
.hero {
  position: relative;
  isolation: isolate;
  padding: 72px 36px 40px;
  overflow: hidden;
  background:
    radial-gradient(900px 420px at 88% 8%, rgba(0, 0, 0, 0.04), transparent 58%),
    var(--bg);
}

.hero::before {
  content: "MATTER";
  position: absolute;
  right: -2%;
  top: 12%;
  font-family: var(--font-brand);
  font-size: clamp(72px, 16vw, 200px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: color-mix(in srgb, var(--ink) 5%, transparent);
  transform: rotate(-7deg);
  pointer-events: none;
  z-index: -1;
  white-space: nowrap;
}

.hero-inner {
  max-width: 1080px;
  margin: 0 auto;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--seal);
  font-weight: 650;
  margin: 0 0 16px;
  animation: rise 0.6s ease both;
}

.hero-kicker::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--seal);
}

.hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-brand);
  font-size: clamp(36px, 5.6vw, 56px);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.02em;
  max-width: 12em;
  animation: rise 0.65s 0.05s ease both;
}

.hero h1 em {
  font-style: italic;
  color: var(--ink);
  font-weight: 500;
}

.hero-lead {
  margin: 0 0 28px;
  font-size: 17px;
  color: var(--mute);
  max-width: 38em;
  line-height: 1.7;
  animation: rise 0.65s 0.1s ease both;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  animation: rise 0.65s 0.16s ease both;
}

.hero-cta .btn {
  padding: 12px 20px;
}

.hero-stage {
  max-width: 1080px;
  margin: 44px auto 0;
  animation: rise 0.75s 0.2s ease both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 64px 36px;
}

.section h2 {
  margin: 0 0 10px;
  font-family: var(--font-brand);
  font-size: clamp(26px, 3.2vw, 34px);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.section > .lead {
  margin: 0 0 32px;
  color: var(--mute);
  max-width: 46em;
  line-height: 1.65;
  font-size: 15px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.feature .num {
  font-family: var(--font-brand);
  font-size: 13px;
  color: var(--seal);
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.feature h3 {
  margin: 0 0 8px;
  font-family: var(--font-brand);
  font-size: 20px;
  font-weight: 600;
}

.feature p {
  margin: 0;
  font-size: 14px;
  color: var(--mute);
  line-height: 1.65;
}

.preview-plane {
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 200px 1fr;
  min-height: 300px;
  box-shadow: var(--shadow);
  background: var(--card);
}

.preview-rail {
  background: var(--ink);
  padding: 18px 12px;
  font-size: 13px;
  color: #c5c0b6;
}

.preview-rail strong {
  display: block;
  font-family: var(--font-brand);
  color: #fff;
  margin: 0 10px 14px;
  font-size: 18px;
  font-weight: 500;
}

.preview-rail ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.preview-rail li {
  padding: 9px 12px;
  border-radius: 7px;
  margin-bottom: 2px;
}

.preview-rail li.on {
  background: #2a2a2a;
  color: #fff;
}

.preview-main {
  padding: 26px;
  background: #fff;
}

.preview-main .chip {
  display: inline-block;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--paper);
  color: var(--mute);
  margin-bottom: 12px;
  font-weight: 600;
}

.preview-main h3 {
  margin: 0 0 10px;
  font-family: var(--font-brand);
  font-size: 22px;
  font-weight: 600;
}

.preview-main p {
  margin: 0;
  color: var(--mute);
  font-size: 14px;
  line-height: 1.65;
  max-width: 48em;
}

.principle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.principle article {
  border-left: 3px solid var(--seal);
  padding: 4px 0 4px 16px;
}

.principle h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 650;
}

.principle p {
  margin: 0;
  font-size: 13px;
  color: var(--mute);
  line-height: 1.6;
}

.site-foot {
  border-top: 1px solid var(--line);
  background: var(--paper);
  padding: 44px 36px;
  color: var(--mute);
  font-size: 13px;
}

.foot-grid {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 28px;
}

.foot-grid h4 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.06em;
}

.foot-grid a {
  display: block;
  margin-bottom: 8px;
  color: var(--mute);
}

.foot-grid a:hover {
  color: var(--seal);
}

.foot-copy {
  max-width: 1080px;
  margin: 28px auto 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--mute-2);
}

.foot-copy code {
  font-size: 11px;
}

/* —— 定价 —— */
.page-head {
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 36px 8px;
}

.page-head h1 {
  margin: 0 0 12px;
  font-family: var(--font-brand);
  font-size: clamp(34px, 4.5vw, 44px);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.page-head p {
  margin: 0;
  color: var(--mute);
  max-width: 42em;
  line-height: 1.65;
  font-size: 15px;
}

.callout {
  margin-top: 22px;
  padding: 14px 16px;
  background: var(--seal-soft);
  border-radius: var(--radius);
  border-left: 3px solid var(--seal);
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
}

.cycle-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 28px 0 8px;
  font-size: 14px;
}

.cycle-pills {
  display: inline-flex;
  background: var(--paper);
  border-radius: 999px;
  padding: 3px;
  border: 1px solid var(--line);
}

.cycle-pills button {
  border: 0;
  background: transparent;
  padding: 7px 14px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--mute);
  font-size: 13px;
}

.cycle-pills button.is-active {
  background: #fff;
  color: var(--ink);
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.sku {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  background: var(--card);
  display: grid;
  gap: 10px;
  box-shadow: var(--shadow);
}

.sku:hover {
  border-color: color-mix(in srgb, var(--seal) 45%, var(--line));
}

.sku.featured {
  border-color: var(--seal);
  outline: 1px solid color-mix(in srgb, var(--seal) 30%, transparent);
}

.sku .tag {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--seal);
  font-weight: 700;
}

.sku strong {
  font-family: var(--font-brand);
  font-size: 22px;
  font-weight: 600;
}

.sku .price {
  font-size: 32px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.sku .price small {
  font-size: 14px;
  color: var(--mute);
  font-weight: 400;
}

.sku .list {
  text-decoration: line-through;
  color: var(--mute-2);
  font-size: 13px;
}

.mute {
  color: var(--mute);
  font-size: 13px;
  line-height: 1.55;
  margin: 0;
}

.price-table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  margin-top: 16px;
  background: var(--card);
}

.price-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

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

.price-table th {
  background: var(--paper);
  font-weight: 600;
}

.price-table tr:last-child td {
  border-bottom: 0;
}

/* —— 文档 —— */
.docs-site {
  background: var(--paper);
}

.docs-top {
  background: color-mix(in srgb, var(--bg) 92%, transparent);
}

.docs-search-wrap {
  position: relative;
  margin-left: auto;
  margin-right: 8px;
}

.docs-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 10px;
  height: 34px;
  min-width: 200px;
}

.docs-search input {
  border: 0;
  background: transparent;
  outline: none;
  flex: 1;
  font-size: 13px;
  min-width: 0;
}

.docs-search kbd {
  font-size: 11px;
  color: var(--mute);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
}

.docs-search-panel {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  max-height: 320px;
  overflow: auto;
  z-index: 60;
}

.docs-search-hit {
  display: grid;
  gap: 2px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.docs-search-hit:last-child {
  border-bottom: 0;
}

.docs-search-hit span {
  color: var(--mute);
  font-size: 12px;
}

.docs-search-hit:hover {
  background: var(--paper);
}

.docs-shell {
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr) 176px;
  min-height: calc(100vh - 60px);
  max-width: 1240px;
  margin: 0 auto;
  background: var(--card);
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

.docs-sidebar {
  border-right: 1px solid var(--line);
  padding: 22px 12px 48px;
  overflow-y: auto;
  position: sticky;
  top: 60px;
  height: calc(100vh - 60px);
}

.docs-tree {
  display: grid;
  gap: 2px;
}

.tree-label {
  margin: 18px 10px 6px;
  font-size: 11px;
  font-weight: 700;
  color: var(--mute-2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.tree-label:first-child {
  margin-top: 2px;
}

.tree-link {
  display: block;
  padding: 8px 12px;
  font-size: 13.5px;
  color: var(--mute);
  border-radius: var(--radius-sm);
}

.tree-link:hover {
  color: var(--ink);
  background: var(--paper);
}

.tree-link.is-active {
  color: var(--seal);
  background: var(--seal-soft);
  font-weight: 650;
}

.docs-main {
  padding: 44px 48px 88px;
  max-width: 700px;
  width: 100%;
  justify-self: center;
}

.doc-page h1 {
  margin: 0 0 16px;
  font-family: var(--font-brand);
  font-size: 36px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.doc-lead {
  margin: 0 0 32px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mute);
}

.doc-page h2 {
  margin: 40px 0 12px;
  font-family: var(--font-brand);
  font-size: 22px;
  font-weight: 600;
}

.doc-page p,
.doc-page li {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mute);
}

.doc-page ul,
.doc-page ol {
  padding-left: 1.3em;
  margin: 0 0 12px;
}

.doc-page li + li {
  margin-top: 5px;
}

.doc-page a {
  color: var(--seal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.doc-page pre {
  background: var(--ink);
  color: #e8e4da;
  padding: 14px 16px;
  border-radius: 8px;
  overflow: auto;
  font-size: 12.5px;
  line-height: 1.55;
  font-family: ui-monospace, Consolas, monospace;
}

.doc-page code,
code,
.claim {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 12.5px;
}

.doc-page p code,
.doc-page li code {
  background: var(--paper);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--ink);
}

.doc-table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  margin: 12px 0;
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.doc-table th,
.doc-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.doc-table th {
  background: var(--paper);
  font-weight: 600;
  color: var(--ink);
}

.doc-table tr:last-child td {
  border-bottom: 0;
}

.docs-rail {
  border-left: 1px solid var(--line);
  padding: 36px 16px 48px;
  position: sticky;
  top: 60px;
  height: calc(100vh - 60px);
  overflow-y: auto;
}

.rail-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mute-2);
  margin-bottom: 12px;
}

.rail-nav a {
  display: block;
  padding: 6px 0 6px 10px;
  font-size: 13px;
  color: var(--mute-2);
  border-left: 2px solid var(--line);
  line-height: 1.4;
}

.rail-nav a:hover {
  color: var(--ink);
}

.rail-nav a.is-active {
  color: var(--seal);
  border-left-color: var(--seal);
  font-weight: 650;
}

.rail-empty {
  font-size: 12px;
  color: var(--mute);
}

.tree-group {
  display: contents;
}

/* —— 登录 / 控制台 —— */
.login-page {
  min-height: calc(100vh - 60px);
  display: grid;
  place-items: center;
  padding: 48px 20px;
  background: var(--paper);
}

.login-card {
  width: min(400px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 32px 28px;
  box-shadow: var(--shadow);
}

.login-card h1 {
  margin: 0 0 8px;
  font-family: var(--font-brand);
  font-size: 26px;
  font-weight: 600;
  text-align: center;
}

.login-card .sub {
  text-align: center;
  color: var(--mute);
  font-size: 13px;
  margin: 0 0 24px;
  line-height: 1.5;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
  font-size: 13px;
}

.field input {
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: #fff;
}

.field input:focus {
  outline: 1px solid var(--ink);
  border-color: var(--ink);
}

.login-card .btn-primary,
.login-card .btn-dark,
.login-card .btn-seal {
  width: 100%;
  padding: 12px;
  margin-top: 4px;
}

.login-hint {
  margin-top: 16px;
  font-size: 12px;
  color: var(--mute-2);
  text-align: center;
  line-height: 1.55;
}

.err {
  color: var(--ink);
  font-size: 13px;
  margin-top: 10px;
  font-weight: 600;
}

.ok {
  color: var(--ink);
  white-space: pre-wrap;
  font-size: 13px;
}

.console {
  display: grid;
  grid-template-columns: 232px 1fr;
  min-height: calc(100vh - 60px);
  background: var(--paper);
}

.console-side {
  background: var(--card);
  border-right: 1px solid var(--line);
  padding: 22px 12px;
}

.side-user {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 8px 10px 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 12px;
}

.side-user .avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--seal);
  color: #fff;
  display: grid;
  place-items: center;
  font-family: var(--font-brand);
  font-size: 16px;
  flex-shrink: 0;
}

.side-user .name {
  font-weight: 650;
  font-size: 14px;
}

.side-user .meta {
  font-size: 12px;
  color: var(--mute);
  margin-top: 2px;
}

.side-nav {
  display: grid;
  gap: 2px;
}

.side-nav button {
  text-align: left;
  border: 0;
  background: transparent;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--mute);
  font-size: 14px;
}

.side-nav button:hover {
  background: var(--paper);
  color: var(--ink);
}

.side-nav button.is-active {
  background: var(--seal-soft);
  color: var(--seal);
  font-weight: 650;
}

.console-main {
  padding: 32px 36px 52px;
  max-width: 960px;
}

.console-main h1 {
  margin: 0 0 6px;
  font-family: var(--font-brand);
  font-size: 28px;
  font-weight: 600;
}

.console-main .sub {
  margin: 0 0 22px;
  color: var(--mute);
  font-size: 13px;
}

.panel-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 14px;
  box-shadow: var(--shadow);
}

.usage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.usage-stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
}

.usage-stat .label {
  font-size: 12px;
  color: var(--mute);
}

.usage-stat .value {
  font-family: var(--font-brand);
  font-size: 26px;
  font-variant-numeric: tabular-nums;
  margin-top: 4px;
  font-weight: 600;
}

.usage-stat .hint {
  font-size: 11px;
  color: var(--mute-2);
  margin-top: 4px;
}

.kv-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.kv-row:last-child {
  border-bottom: 0;
}

.kv-row .k {
  color: var(--mute);
}

.bill-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.bill-table th,
.bill-table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.bill-table th {
  color: var(--mute);
  font-weight: 500;
  background: var(--paper);
}

.mono {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 12px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  background: var(--paper);
  border: 1px solid var(--line);
}

.badge.paid,
.badge.fulfilled {
  background: var(--paper);
  border-color: var(--line-strong);
  color: var(--ink);
}

.badge.created {
  background: #fff;
  border-color: var(--line-strong);
  color: var(--mute);
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.danger-zone {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.danger-zone p {
  margin: 4px 0 0;
  color: var(--mute);
  font-size: 13px;
}

.claim {
  margin-top: 6px;
  word-break: break-all;
  background: var(--paper);
  padding: 8px;
  border-radius: 6px;
}

dialog {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0;
  box-shadow: var(--shadow);
}

.pay {
  padding: 20px;
  min-width: min(420px, 90vw);
}

.actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

@media (max-width: 900px) {
  .feature-grid,
  .usage-grid,
  .foot-grid,
  .principle {
    grid-template-columns: 1fr;
  }

  .preview-plane,
  .console,
  .docs-shell {
    grid-template-columns: 1fr;
  }

  .docs-sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .docs-rail,
  .lang-btn {
    display: none;
  }

  .nav-links {
    display: none;
  }

  .side-nav {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
  }

  .kv-row {
    grid-template-columns: 1fr;
  }

  .site-nav,
  .hero,
  .section,
  .page-head {
    padding-left: 20px;
    padding-right: 20px;
  }
}