/* ==========================================================================
   claudebaby.cn —— 「规格说明书」视觉体系
   --------------------------------------------------------------------------
   这不是又一套深色 SaaS 落地页。站点把自己当作一件**测量仪器**来排版：
   骨白纸面 + 墨黑铅字 + 一枚酸性柠檬高亮，衬线做标题、等宽做标签与数字，
   一切用发丝线与编号（§01 §02 …）分隔，而不是用圆角卡片和阴影堆层次。
   设计意图：让人一眼看出这是给 Agent 用的数据站 —— 冷、精确、可核对。
   ========================================================================== */

:root {
  --paper: #f4f1e8;
  --paper-2: #ebe6d8;
  --paper-3: #e2dccb;
  --ink: #14170f;
  --ink-soft: #3b4234;
  --muted: #6d7565;
  --rule: rgba(20, 23, 15, 0.14);
  --rule-strong: rgba(20, 23, 15, 0.3);
  --lime: #c9f24d;
  --lime-deep: #9ec72b;
  --amber: #d6822c;
  --alert: #b83c22;
  --ok: #2c6f47;
  --panel: #101310;
  --panel-ink: #e9ead9;

  --serif: Georgia, "Songti SC", "Source Han Serif SC", "Noto Serif CJK SC", SimSun, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Roboto Mono", Menlo, Consolas,
    "Noto Sans Mono CJK SC", monospace;

  --wrap: 1180px;
  --gap: clamp(20px, 3.2vw, 44px);
  --hair: 1px solid var(--rule);
}

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

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

body {
  margin: 0;
  background-color: var(--paper);
  /* 蓝图网格 + 纸纹：让平面有"图纸"的质感，而不是一块纯色底 */
  background-image:
    linear-gradient(to right, rgba(20, 23, 15, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(20, 23, 15, 0.045) 1px, transparent 1px);
  background-size: 32px 32px, 32px 32px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  font-feature-settings: "tnum" 1;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9;
  opacity: 0.5;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.16'/%3E%3C/svg%3E");
}

a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--rule-strong);
  transition: border-color 120ms ease, background-color 120ms ease;
}

a:hover {
  background-color: var(--lime);
  border-bottom-color: var(--ink);
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin: 0;
  line-height: 1.12;
}

p {
  margin: 0 0 1em;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px);
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 8px 14px;
  z-index: 100;
}

.skip:focus {
  left: 8px;
  top: 8px;
}

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

/* ---------------- 顶栏 ---------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(244, 241, 232, 0.88);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: var(--hair);
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 3vw, 34px);
  min-height: 62px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  border-bottom: none;
  flex-shrink: 0;
}

.brand:hover {
  background: none;
}

.brand-mark {
  width: 11px;
  height: 11px;
  background: var(--ink);
  box-shadow: inset 0 0 0 2px var(--lime);
  align-self: center;
  transform: translateY(1px);
}

.brand-word {
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand-tag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
  border-left: var(--hair);
  padding-left: 10px;
}

.nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
  font-size: 14px;
}

.nav-link {
  border-bottom: none;
  padding: 4px 0;
  position: relative;
  color: var(--ink-soft);
}

.nav-link[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--ink);
  transition: right 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  right: 0;
}

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

.account-email {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  max-width: 18ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

form.inline {
  display: inline;
  margin: 0;
}

/* ---------------- 按钮 ---------------- */

.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  padding: 9px 16px;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  border-radius: 0;
  transition: transform 90ms ease, background-color 120ms ease, color 120ms ease;
}

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

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

.btn-solid {
  background: var(--ink);
  color: var(--paper);
}

.btn-solid:hover {
  background: var(--lime);
  color: var(--ink);
  border-color: var(--ink);
}

.btn-ghost {
  border-color: var(--rule-strong);
}

.btn-lime {
  background: var(--lime);
  border-color: var(--ink);
  color: var(--ink);
  font-weight: 600;
}

.btn-lime:hover {
  background: var(--ink);
  color: var(--lime);
}

.btn[disabled],
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-sm {
  padding: 6px 11px;
  font-size: 12px;
}

/* ---------------- 通用版式 ---------------- */

.main {
  display: block;
  padding-bottom: 60px;
}

.section {
  border-top: var(--hair);
  padding: clamp(34px, 5vw, 62px) 0;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 26px;
}

.section-num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

.section-title {
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
}

.section-lede {
  max-width: 62ch;
  color: var(--ink-soft);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.hl {
  background: linear-gradient(transparent 58%, var(--lime) 58%);
  padding: 0 2px;
}

.num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

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

.small {
  font-size: 13px;
}

/* ---------------- 首屏 ---------------- */

.hero {
  padding: clamp(44px, 7vw, 92px) 0 clamp(30px, 4vw, 48px);
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: var(--gap);
  align-items: start;
}

.hero h1 {
  font-size: clamp(2.3rem, 5.4vw, 4rem);
  margin: 14px 0 20px;
}

.hero-lede {
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  color: var(--ink-soft);
  max-width: 46ch;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.hero-note {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-top: 14px;
}

/* 右侧"铭牌"：像贴在仪器上的规格标签 */
.spec {
  border: 1px solid var(--ink);
  background: var(--paper-2);
}

.spec-head {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 9px 14px;
  background: var(--ink);
  color: var(--panel-ink);
  display: flex;
  justify-content: space-between;
}

.spec-row {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr);
  gap: 12px;
  padding: 11px 14px;
  border-top: var(--hair);
  font-size: 14px;
  align-items: baseline;
}

.spec-row dt {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}

.spec-row dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
}

/* ---------------- 平台矩阵 ---------------- */

.matrix {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(224px, 1fr));
  border-top: var(--hair);
  border-left: var(--hair);
}

.cell {
  border-right: var(--hair);
  border-bottom: var(--hair);
  padding: 15px 16px;
  position: relative;
  transition: background-color 140ms ease;
}

.cell:hover {
  background: var(--paper-2);
}

.cell-name {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cell-domain {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  margin-top: 6px;
  word-break: break-all;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--rule-strong);
  flex-shrink: 0;
}

.dot-live {
  background: var(--lime-deep);
  box-shadow: 0 0 0 3px rgba(158, 199, 43, 0.22);
}

.cell-planned {
  opacity: 0.62;
}

/* ---------------- 步骤 ---------------- */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
  border-top: 1px solid var(--ink);
}

.step {
  counter-increment: step;
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 20px;
  padding: 18px 0;
  border-bottom: var(--hair);
  align-items: baseline;
}

.step::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}

.step-title {
  font-family: var(--serif);
  font-size: 1.06rem;
  font-weight: 700;
}

.step-body {
  color: var(--ink-soft);
  font-size: 14px;
  margin: 0;
}

/* ---------------- 表格 ---------------- */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--ink);
  background: var(--paper-2);
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

table.data th {
  text-align: left;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  padding: 10px 14px;
  border-bottom: 1px solid var(--ink);
  white-space: nowrap;
}

table.data td {
  padding: 11px 14px;
  border-bottom: var(--hair);
  vertical-align: top;
}

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

table.data tbody tr:hover {
  background: rgba(201, 242, 77, 0.22);
}

td.right,
th.right {
  text-align: right;
}

.empty {
  border: 1px dashed var(--rule-strong);
  padding: 26px;
  text-align: center;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
}

/* ---------------- 徽标 ---------------- */

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 2px 7px;
  border: 1px solid var(--rule-strong);
  white-space: nowrap;
}

.badge-live {
  background: var(--lime);
  border-color: var(--ink);
}

.badge-muted {
  color: var(--muted);
}

.badge-ok {
  color: var(--ok);
  border-color: var(--ok);
}

.badge-warn {
  color: var(--amber);
  border-color: var(--amber);
}

.badge-alert {
  color: var(--alert);
  border-color: var(--alert);
}

/* ---------------- 代码 ---------------- */

.code {
  position: relative;
  background: var(--panel);
  color: var(--panel-ink);
  border: 1px solid var(--ink);
}

.code-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 8px 14px;
  border-bottom: 1px solid rgba(233, 234, 217, 0.18);
  color: rgba(233, 234, 217, 0.6);
}

.code pre {
  margin: 0;
  padding: 14px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.7;
}

.code code {
  color: var(--panel-ink);
}

.copy {
  position: absolute;
  top: 6px;
  right: 6px;
  background: transparent;
  border: 1px solid rgba(233, 234, 217, 0.35);
  color: rgba(233, 234, 217, 0.85);
  font-family: var(--mono);
  font-size: 11px;
  padding: 3px 8px;
  cursor: pointer;
}

.copy:hover {
  background: var(--lime);
  color: var(--ink);
  border-color: var(--lime);
}

.code-plain {
  background: var(--panel);
  color: var(--panel-ink);
  font-family: var(--mono);
  font-size: 12px;
  padding: 12px 14px;
  overflow-x: auto;
  display: block;
  border: 1px solid var(--ink);
}

/* ---------------- 卡片 / 栅格 ---------------- */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--gap);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 0;
  border-top: 1px solid var(--ink);
  border-left: var(--hair);
}

.plan {
  border-right: var(--hair);
  border-bottom: var(--hair);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--paper-2);
}

.plan-featured {
  background: var(--paper);
  box-shadow: inset 0 4px 0 0 var(--lime);
}

.plan-name {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 700;
}

.plan-price {
  font-family: var(--mono);
  font-size: 1.7rem;
  letter-spacing: -0.02em;
}

.plan-price small {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0;
}

.plan ul {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13.5px;
  color: var(--ink-soft);
  display: grid;
  gap: 7px;
}

.plan li::before {
  content: "— ";
  color: var(--muted);
}

.note {
  border-left: 3px solid var(--lime-deep);
  background: var(--paper-2);
  padding: 12px 16px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.note-alert {
  border-left-color: var(--alert);
}

/* ---------------- 控制台 ---------------- */

.console-wrap {
  display: grid;
  grid-template-columns: 208px minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
  padding-top: 30px;
}

.rail {
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--ink);
  position: sticky;
  top: 86px;
}

.rail-nav-link {
  border-bottom: none;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: var(--hair);
  font-family: var(--mono);
  font-size: 13px;
}

.rail-nav-link:hover {
  background: var(--lime);
  color: var(--ink);
}

.rail-nav-link[aria-current="page"] {
  background: var(--ink);
  color: var(--panel-ink);
}

.console-body {
  min-width: 0;
}

.console-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 14px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.console-head h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  border-top: 1px solid var(--ink);
  border-left: var(--hair);
  margin-bottom: 30px;
}

.kpi {
  border-right: var(--hair);
  border-bottom: var(--hair);
  padding: 16px 16px 18px;
  background: var(--paper-2);
}

.kpi-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.kpi-value {
  font-family: var(--mono);
  font-size: 1.6rem;
  letter-spacing: -0.02em;
  margin: 8px 0 4px;
  font-variant-numeric: tabular-nums;
}

.kpi-hint {
  font-size: 12px;
  color: var(--muted);
}

.card {
  border: 1px solid var(--ink);
  background: var(--paper-2);
  padding: 20px;
  margin-bottom: 26px;
}

.card h2 {
  font-size: 1.15rem;
  margin-bottom: 6px;
}

.card-sub {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 18px;
}

.field {
  display: block;
  margin-bottom: 14px;
}

.field-label {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  display: block;
  margin-bottom: 5px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="number"],
select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--rule-strong);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13.5px;
  border-radius: 0;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--ink);
  box-shadow: inset 3px 0 0 0 var(--lime);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
}

.form-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 6px;
  flex-wrap: wrap;
}

.hint {
  font-size: 12.5px;
  color: var(--muted);
}

/* 一次性密钥展示：必须显眼、必须只出现一次 */
.secret {
  border: 2px solid var(--ink);
  background: var(--lime);
  padding: 18px;
  margin-bottom: 22px;
}

.secret code {
  display: block;
  font-family: var(--mono);
  font-size: 14px;
  word-break: break-all;
  background: var(--paper);
  border: 1px solid var(--ink);
  padding: 12px;
  margin: 12px 0;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 40;
  max-width: 380px;
  padding: 13px 16px;
  border: 1px solid var(--ink);
  background: var(--paper);
  font-size: 13.5px;
  box-shadow: 5px 5px 0 0 rgba(20, 23, 15, 0.16);
}

.toast-err {
  border-left: 5px solid var(--alert);
}

.toast-ok {
  border-left: 5px solid var(--lime-deep);
}

.toast[hidden] {
  display: none;
}

/* ---------------- 登录 / 注册 ---------------- */

.auth {
  max-width: 480px;
  margin: clamp(40px, 8vw, 90px) auto;
}

.auth h1 {
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  margin-bottom: 8px;
}

.auth-sub {
  color: var(--ink-soft);
  margin-bottom: 26px;
}

.auth-alt {
  margin-top: 18px;
  font-size: 13.5px;
  color: var(--muted);
}

/* ---------------- 页脚 ---------------- */

.footer {
  border-top: 1px solid var(--ink);
  background: var(--paper-2);
  padding: 34px 0 46px;
}

.footer-inner {
  display: grid;
  gap: 14px;
}

.footer-brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-note {
  font-size: 13px;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 12.5px;
}

.footer-legal {
  font-size: 12.5px;
  color: var(--muted);
  margin: 0;
  max-width: 70ch;
}

/* ---------------- 动效 ---------------- */

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.reveal {
  animation: rise 520ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.reveal-2 {
  animation-delay: 70ms;
}
.reveal-3 {
  animation-delay: 140ms;
}
.reveal-4 {
  animation-delay: 210ms;
}
.reveal-5 {
  animation-delay: 280ms;
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-2,
  .reveal-3,
  .reveal-4,
  .reveal-5 {
    animation: none;
  }
  * {
    transition: none !important;
  }
}

/* ---------------- 响应式 ---------------- */

@media (max-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }
  .console-wrap {
    grid-template-columns: minmax(0, 1fr);
  }
  .rail {
    position: static;
    flex-direction: row;
    overflow-x: auto;
    border-left: none;
    border-top: 1px solid var(--ink);
    border-bottom: var(--hair);
  }
  .step {
    grid-template-columns: 2.4rem minmax(0, 1fr);
  }
  .step-body {
    grid-column: 2;
  }
  .brand-tag,
  .nav {
    display: none;
  }
  .topbar-actions {
    margin-left: auto;
  }
}

@media (max-width: 560px) {
  .topbar-actions .btn {
    padding: 7px 10px;
    font-size: 12px;
  }
  .account-email {
    display: none;
  }
}