/* mima-fingerprint 官网 —— 仪器感、克制、细线结构 */

:root {
  --paper: #f6f7f6;
  --paper-2: #ffffff;
  --ink: #101a1a;
  --ink-2: #55625f;
  --ink-3: #8a9592;
  --line: #dce2e0;
  --line-strong: #c3ccc9;
  --accent: #0e7c70;
  --accent-soft: #e8f3f1;
  --warn: #b4532a;
  --code-bg: #0e1a18;
  --code-ink: #d7e3e0;
  --sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Consolas, monospace;
  --maxw: 1120px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 导航 ---------- */
.nav {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 20;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-weight: 650;
  letter-spacing: -0.01em;
}
.brand-mark {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
  transform: translateY(-1px);
}
.brand-sub {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-3);
  font-weight: 400;
}
.nav-links {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--ink-2);
}
.nav-cta {
  font-size: 14px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  padding: 7px 14px;
  color: var(--ink);
}
.nav-cta:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Hero ---------- */
.hero {
  padding: 88px 0 72px;
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 56px;
  align-items: center;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.02em;
  margin: 0 0 18px;
}
.hero h1 {
  font-size: clamp(34px, 4.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 680;
  margin: 0 0 22px;
}
.hero p {
  font-size: 17px;
  color: var(--ink-2);
  max-width: 46ch;
  margin: 0 0 32px;
}
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 11px 20px;
  font-size: 14px;
  border-radius: 2px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
}
.btn:hover { background: #0b6a5f; color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: transparent; }

.hero-figure {
  position: relative;
  border: 1px solid var(--line);
  background: var(--paper-2);
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.hero-figure canvas { display: block; width: 100%; height: 100%; }
.figure-note {
  position: absolute;
  left: 14px;
  bottom: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
}
.figure-tag {
  position: absolute;
  right: 14px;
  top: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 3px 7px;
  border-radius: 2px;
}

/* ---------- 规格条 ---------- */
.specs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
}
.spec {
  padding: 26px 24px 26px 0;
  border-right: 1px solid var(--line);
}
.spec:last-child { border-right: 0; }
.spec dt {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-3);
  margin: 0 0 6px;
}
.spec dd {
  margin: 0;
  font-size: 15px;
  color: var(--ink);
}
.spec dd strong { font-size: 22px; font-weight: 650; letter-spacing: -0.01em; }

/* ---------- 区块通用 ---------- */
.section { padding: 76px 0; border-bottom: 1px solid var(--line); }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}
.section h2 {
  font-size: 28px;
  letter-spacing: -0.02em;
  font-weight: 650;
  margin: 0;
}
.section-note { font-size: 14px; color: var(--ink-3); max-width: 42ch; }

/* ---------- 能力 ---------- */
.capabilities {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
.cap {
  padding: 28px 28px 32px 0;
  border-right: 1px solid var(--line);
}
.cap:last-child { border-right: 0; padding-right: 0; }
.cap h3 { font-size: 17px; margin: 0 0 8px; font-weight: 620; }
.cap p { margin: 0; font-size: 14.5px; color: var(--ink-2); }

/* ---------- 接入流程 ---------- */
.flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  counter-reset: step;
}
.flow-step {
  position: relative;
  padding: 30px 32px 0 0;
}
.flow-step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  display: block;
  margin-bottom: 14px;
}
.flow-step::after {
  content: "";
  position: absolute;
  top: 36px;
  right: 12px;
  width: calc(100% - 56px);
  height: 1px;
  background: var(--line);
}
.flow-step:last-child::after { display: none; }
.flow-step h3 { font-size: 16px; margin: 0 0 8px; font-weight: 620; }
.flow-step p { margin: 0 0 14px; font-size: 14px; color: var(--ink-2); }
.flow-step code {
  font-family: var(--mono);
  font-size: 12.5px;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 2px;
}

/* ---------- 文档入口 ---------- */
.doc-list { border-top: 1px solid var(--line); }
.doc-row {
  display: grid;
  grid-template-columns: 200px 1fr 150px;
  gap: 24px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.doc-row:hover { color: var(--accent); }
.doc-row dt { font-size: 15px; font-weight: 600; }
.doc-row dd { margin: 0; font-size: 14px; color: var(--ink-2); }
.doc-row span {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-3);
  text-align: right;
  white-space: nowrap;
}

/* ---------- 页脚 ---------- */
.footer {
  padding: 44px 0 56px;
  font-size: 13px;
  color: var(--ink-3);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

/* ---------- 文档页 ---------- */
.doc-layout {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  gap: 56px;
  padding: 48px 0 80px;
}
.toc {
  position: sticky;
  top: 88px;
  align-self: start;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  font-size: 14px;
}
.toc-group { margin-bottom: 26px; }
.toc-toggle { display: none; }
.toc-title {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
  margin: 0 0 10px;
  letter-spacing: 0.03em;
}
.toc a {
  display: block;
  padding: 5px 0 5px 12px;
  border-left: 2px solid transparent;
  color: var(--ink-2);
  line-height: 1.5;
}
.toc a:hover { color: var(--ink); }
.toc a.active { color: var(--accent); border-left-color: var(--accent); }

.doc-content { min-width: 0; }
.doc-content h1 {
  font-size: 34px;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  font-weight: 680;
}
.doc-content .lead { color: var(--ink-2); font-size: 16px; margin: 0 0 40px; max-width: 62ch; }
.doc-content section { margin-bottom: 56px; scroll-margin-top: 88px; }
.doc-content h2 {
  font-size: 22px;
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-weight: 640;
  letter-spacing: -0.01em;
}
.doc-content h3 { font-size: 16px; margin: 28px 0 10px; font-weight: 620; }
.doc-content p { color: var(--ink-2); max-width: 66ch; margin: 0 0 14px; }
.doc-content ul { color: var(--ink-2); padding-left: 20px; margin: 0 0 16px; }
.doc-content li { margin-bottom: 6px; }
.doc-content code {
  font-family: var(--mono);
  font-size: 13px;
  background: #eef2f1;
  padding: 1.5px 5px;
  border-radius: 2px;
  color: var(--ink);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 0 0 18px;
}
.table th, .table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.table th { color: var(--ink-3); font-weight: 500; font-size: 13px; }
.table td code { background: transparent; padding: 0; }

.code-block {
  position: relative;
  background: var(--code-bg);
  color: var(--code-ink);
  border-radius: 3px;
  padding: 18px 20px;
  overflow-x: auto;
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
}
.code-block code { background: transparent; color: inherit; padding: 0; font-size: inherit; }
.copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  font-family: var(--mono);
  font-size: 11px;
  color: #8fa8a3;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 2px;
  padding: 4px 8px;
  cursor: pointer;
}
.copy-btn:hover { color: #d7e3e0; border-color: rgba(255,255,255,0.28); }
.copy-btn.copied { color: #6ad3bf; border-color: #2f6f63; }

.callout {
  border-left: 2px solid var(--accent);
  background: var(--accent-soft);
  padding: 14px 18px;
  font-size: 14px;
  color: #14524a;
  margin: 0 0 18px;
}
.callout.warn { border-left-color: var(--warn); background: #fbf0eb; color: #7c3a20; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero { padding: 56px 0 48px; }
  .specs { grid-template-columns: repeat(2, 1fr); }
  .spec { border-right: 0; border-bottom: 1px solid var(--line); }
  .spec:nth-child(odd) { border-right: 1px solid var(--line); }
  .capabilities { grid-template-columns: 1fr; }
  .cap { border-right: 0; border-bottom: 1px solid var(--line); padding-right: 0; }
  .flow { grid-template-columns: 1fr; }
  .flow-step::after { display: none; }
  .doc-row { grid-template-columns: 1fr; gap: 4px; }
  .doc-row span { text-align: left; }
  .doc-layout { grid-template-columns: 1fr; gap: 32px; }
  .toc {
    position: static;
    max-height: none;
    border-bottom: 1px solid var(--line);
    padding-bottom: 12px;
  }
  .toc-toggle {
    display: block;
    width: 100%;
    text-align: left;
    background: none;
    border: 0;
    padding: 8px 0;
    font: inherit;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    cursor: pointer;
  }
  .toc-body { display: none; }
  .toc.open .toc-body { display: block; padding-top: 10px; }
  .nav-links { display: none; }
  .brand-sub { display: none; }
  .brand { white-space: nowrap; }
  .nav-inner { gap: 12px; }
  .nav-cta { padding: 6px 10px; font-size: 13px; white-space: nowrap; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}