/* ============================================================
   brand.css · mjapk 内页骨架：域名铭牌
   冷灰 + 钴蓝，居中铭牌式排版，细线分隔
   ============================================================ */

.page-mjapk {
  --paper: #eef0f4;
  --ink: #0e1622;
  --ink-soft: #4a5665;
  --ink-faint: #8994a3;
  --line: rgba(14, 22, 34, 0.12);
  --accent: #2547e0;
  --accent-ink: #ffffff;
  --header-bg: rgba(238, 240, 244, 0.9);
  --header-fg: #0e1622;
  --header-line: rgba(14, 22, 34, 0.1);
  --tab-on: #0e1622;
  --tab-on-fg: #eef0f4;
  background: var(--paper);
}

/* ---------- hero ---------- */
.mk-hero {
  padding: 52px 0 50px;
  border-bottom: 1px solid var(--line);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.mk-hero::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -160px;
  width: 640px;
  height: 320px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(37, 71, 224, 0.13), transparent);
  pointer-events: none;
}
.mk-crumb { justify-content: center; margin-bottom: 26px; }
.mk-plate {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--accent);
}
.mk-plate::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.mk-title {
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: clamp(46px, 8vw, 104px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
}
.mk-title .dot { color: var(--accent); }
.mk-title small {
  display: block;
  margin-top: 16px;
  font-family: var(--font-sans);
  font-size: clamp(17px, 2vw, 22px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}
.mk-lead { max-width: 720px; margin: 18px auto 0; font-size: 15.5px; color: var(--ink-soft); }
.mk-lead b { color: var(--ink); }
.mk-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 28px; position: relative; z-index: 1; }
.mk-actions .btn-primary { border-radius: 10px; }
.mk-actions .btn-room { border-radius: 10px; }
.mk-figure {
  max-width: 860px;
  margin: 34px auto 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(180deg, #fff, rgba(255, 255, 255, 0.4));
  box-shadow: 0 30px 60px -40px rgba(14, 22, 34, 0.45);
}
.mk-figure img { width: 100%; height: auto; border-radius: 12px; }

/* ---------- section ---------- */
.mk-sec { padding: 72px 0; border-bottom: 1px solid var(--line); }
.mk-sec:last-of-type { border-bottom: 0; }
.mk-label {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 26px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--ink-faint);
}
.mk-label::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.mk-h2 {
  font-size: clamp(25px, 3.2vw, 36px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.02em;
}
.mk-sub { max-width: 46em; margin-top: 10px; font-size: 14.5px; color: var(--ink-soft); }

/* letters */
.mk-letters { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-top: 34px; }
.mk-letter {
  position: relative;
  padding: 24px 20px 22px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--line);
  transition: transform 0.25s var(--ease), box-shadow 0.25s;
}
.mk-letter:hover { transform: translateY(-5px); box-shadow: 0 18px 40px -26px rgba(14, 22, 34, 0.4); }
.mk-letter i {
  display: block;
  font-family: var(--font-mono);
  font-size: 54px;
  font-style: normal;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
  letter-spacing: -0.04em;
}
.mk-letter b { display: block; margin-top: 14px; font-size: 15px; font-weight: 800; }
.mk-letter p { margin-top: 4px; font-size: 12.5px; color: var(--ink-soft); }

/* index table */
.mk-tablewrap { margin-top: 30px; overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.mk-table { width: 100%; min-width: 640px; border-collapse: collapse; font-size: 14px; }
.mk-table th, .mk-table td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--line); }
.mk-table th {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  font-weight: 600;
  color: var(--ink-faint);
  background: rgba(14, 22, 34, 0.035);
}
.mk-table tr:last-child td { border-bottom: 0; }
.mk-table code { font-family: var(--font-mono); font-size: 13px; color: var(--accent); }

/* anatomy */
.mk-anatomy { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 30px; }
.mk-part {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}
.mk-part h3 { display: flex; align-items: baseline; gap: 10px; font-size: 16px; font-weight: 800; }
.mk-part h3 em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
}
.mk-part p { margin-top: 8px; font-size: 13.5px; color: var(--ink-soft); }

/* typo cards */
.mk-typos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 30px; }
.mk-typo {
  padding: 20px;
  border-radius: 14px;
  border: 1px dashed rgba(14, 22, 34, 0.2);
  background: rgba(255, 255, 255, 0.5);
}
.mk-typo code { font-family: var(--font-mono); font-size: 16px; font-weight: 700; color: #c2410c; }
.mk-typo span { display: block; margin-top: 6px; font-size: 12.5px; color: var(--ink-soft); }

/* compare */
.mk-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 30px; }
.mk-compare > div { padding: 26px; border-radius: 16px; }
.mk-compare .yes { background: #0e1622; color: #eef0f4; }
.mk-compare .no { background: #fff; border: 1px solid var(--line); }
.mk-compare h3 { font-size: 15px; font-weight: 800; letter-spacing: 0.02em; }
.mk-compare .yes h3 { color: #8fb0ff; }
.mk-compare .no h3 { color: #c2410c; }
.mk-compare ul { margin-top: 14px; display: grid; gap: 10px; font-size: 13.5px; }
.mk-compare li { display: grid; grid-template-columns: 18px 1fr; gap: 8px; }
.mk-compare li::before { content: "✓"; color: #4ade80; font-weight: 700; }
.mk-compare .no li::before { content: "×"; color: #c2410c; }
.mk-compare .yes li { opacity: 0.86; }
.mk-compare .no li { opacity: 0.86; }

/* timeline */
.mk-timeline { margin-top: 30px; border-left: 2px solid var(--line); padding-left: 26px; display: grid; gap: 22px; }
.mk-tl { position: relative; }
.mk-tl::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 7px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 3px solid var(--paper);
  background: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
.mk-tl time { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.12em; color: var(--ink-faint); }
.mk-tl b { display: block; margin-top: 2px; font-size: 15.5px; }
.mk-tl p { margin-top: 4px; font-size: 13.5px; color: var(--ink-soft); }

/* tabs */
.mk-tabs-body { margin-top: 22px; }
.mk-tabs-body .panel {
  padding: 26px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.85;
}
.mk-tabs-body .panel b { color: var(--ink); }

/* stat strip */
.mk-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 30px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}
.mk-strip div { padding: 24px; border-right: 1px solid var(--line); }
.mk-strip div:last-child { border-right: 0; }
.mk-strip b { display: block; font-family: var(--font-mono); font-size: 32px; line-height: 1.1; letter-spacing: -0.03em; }
.mk-strip span { display: block; margin-top: 4px; font-size: 12.5px; color: var(--ink-faint); }

/* checklist */
.mk-list { margin-top: 30px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 28px; }
.mk-list li {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.mk-list li::before {
  content: "□";
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 16px;
  line-height: 1.4;
}
.mk-list b { display: block; }
.mk-list span { font-size: 12.5px; color: var(--ink-faint); }

/* faq */
.mk-faq { max-width: 900px; margin-top: 26px; border-top: 1px solid var(--line); }

/* related */
.mk-related { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 28px; }
.mk-related a {
  padding: 22px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--line);
  transition: transform 0.2s var(--ease), border-color 0.2s;
}
.mk-related a:hover { transform: translateY(-3px); border-color: rgba(37, 71, 224, 0.45); }
.mk-related em { display: block; font-style: normal; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.16em; color: var(--ink-faint); }
.mk-related b { display: block; margin-top: 6px; font-size: 16px; }
.mk-related span { display: block; margin-top: 2px; font-size: 12.5px; color: var(--ink-faint); }

/* cta */
.mk-cta { margin-top: 40px; padding: 42px; border-radius: 20px; background: var(--accent); color: #fff; text-align: center; }
.mk-cta h2 { font-size: clamp(22px, 2.6vw, 30px); font-weight: 900; }
.mk-cta p { margin-top: 8px; font-size: 14px; opacity: 0.82; }
.mk-cta .row { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin-top: 22px; }
.mk-cta .btn-primary { background: #fff; color: var(--accent); box-shadow: none; }
.mk-cta .tg-link { color: #fff; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .mk-letters { grid-template-columns: repeat(3, 1fr); }
  .mk-typos { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
  .mk-hero { padding: 34px 0 36px; }
  .mk-sec { padding: 52px 0; }
  .mk-letters { grid-template-columns: repeat(2, 1fr); }
  .mk-letter i { font-size: 44px; }
  .mk-anatomy { grid-template-columns: 1fr; }
  .mk-typos { grid-template-columns: 1fr; }
  .mk-compare { grid-template-columns: 1fr; }
  .mk-strip { grid-template-columns: 1fr; }
  .mk-strip div { border-right: 0; border-bottom: 1px solid var(--line); }
  .mk-strip div:last-child { border-bottom: 0; }
  .mk-list { grid-template-columns: 1fr; }
  .mk-related { grid-template-columns: 1fr; }
  .mk-cta { padding: 28px; }
  .mk-figure { padding: 8px; }
}