/* ============================================================
   mjbotvip.html — 名爵机器人 / MJBot
   Skeleton: terminal-style hero (dark, mono) → command table →
   two-column capability ledger → numbered usage guide →
   bot-vs-human comparison → CTA
   ============================================================ */

.mb-hero {
  position: relative; padding: 72px 0 88px; overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(800px 400px at 70% 0%, rgba(224,182,96,.10), transparent 62%),
    linear-gradient(180deg, rgba(255,255,255,.015), transparent);
}
.mb-hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 52px; align-items: center; }
.mb-hero h1 {
  font-size: clamp(32px, 4.4vw, 54px); font-weight: 800; line-height: 1.14; letter-spacing: -.02em;
}
.mb-hero h1 .tag-line {
  display: block; font-size: .52em; font-weight: 600; letter-spacing: .04em;
  color: var(--muted); margin-top: 14px;
}
.mb-hero .lead { margin-top: 20px; max-width: 500px; }
.mb-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }

/* mono meta strip */
.mb-meta {
  margin-top: 34px; display: flex; flex-wrap: wrap; gap: 10px;
}
.mb-meta span {
  font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12px;
  padding: 6px 11px; border-radius: 7px; color: var(--muted);
  background: rgba(255,255,255,.035); border: 1px solid var(--line);
}
.mb-meta span b { color: var(--gold-2); font-weight: 600; }

.mb-hero-img {
  border-radius: 22px; overflow: hidden;
  border: 1px solid var(--line-strong); box-shadow: var(--shadow);
}

/* ---------- command table ---------- */
.cmd-section { padding: 84px 0; }
.cmd-table {
  border: 1px solid var(--line); border-radius: 16px; overflow: hidden;
  background: rgba(255,255,255,.02);
}
.cmd-row {
  display: grid; grid-template-columns: 230px 1fr 130px;
  gap: 20px; align-items: center;
  padding: 16px 22px; border-top: 1px solid var(--line);
  transition: background .18s;
}
.cmd-row:first-child { border-top: 0; }
.cmd-row.head {
  background: rgba(255,255,255,.04); padding: 12px 22px;
  font-size: 11.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted-2);
}
.cmd-row:not(.head):hover { background: rgba(224,182,96,.05); }
.cmd-row code {
  font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13.5px;
  color: var(--gold-2); background: rgba(224,182,96,.08);
  border: 1px solid rgba(224,182,96,.16); border-radius: 6px;
  padding: 4px 9px; justify-self: start; white-space: nowrap;
}
.cmd-row .desc { font-size: 13.5px; color: var(--muted); }
.cmd-row .who { font-size: 12px; color: var(--muted-2); text-align: right; }

/* ---------- capability ledger ---------- */
.ledger { padding: 0 0 84px; }
.ledger-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid var(--line); }
.ledger-item {
  padding: 32px 32px 32px 0; border-bottom: 1px solid var(--line);
  display: grid; grid-template-columns: 56px 1fr; gap: 20px;
}
.ledger-item:nth-child(even) { padding-left: 32px; padding-right: 0; border-left: 1px solid var(--line); }
.ledger-item .idx {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 13px; color: var(--gold); opacity: .85; padding-top: 3px;
}
.ledger-item h3 { font-size: 17px; margin-bottom: 8px; }
.ledger-item p { font-size: 13.5px; color: var(--muted); }
.ledger-item ul { margin-top: 12px; display: flex; flex-direction: column; gap: 7px; }
.ledger-item li {
  font-size: 13px; color: var(--muted-2); padding-left: 16px; position: relative;
}
.ledger-item li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px; border-radius: 2px; background: var(--gold); opacity: .55;
}

/* ---------- usage guide (numbered vertical rail) ---------- */
.usage { padding: 84px 0; background: rgba(255,255,255,.014); border-block: 1px solid var(--line); }
.rail { position: relative; display: flex; flex-direction: column; gap: 0; max-width: 860px; margin-inline: auto; }
.rail-item { display: grid; grid-template-columns: 88px 1fr; gap: 30px; padding-bottom: 42px; position: relative; }
.rail-item:last-child { padding-bottom: 0; }
.rail-item::before {
  content: ""; position: absolute; left: 43px; top: 54px; bottom: 0; width: 1px;
  background: linear-gradient(180deg, rgba(224,182,96,.45), rgba(224,182,96,.06));
}
.rail-item:last-child::before { display: none; }
.rail-n {
  width: 88px; height: 54px; display: grid; place-items: center;
  font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 15px; font-weight: 700;
  color: var(--gold-2); border-radius: 12px;
  background: rgba(224,182,96,.08); border: 1px solid rgba(224,182,96,.24);
}
.rail-body { padding-top: 6px; }
.rail-body h3 { font-size: 18px; margin-bottom: 8px; }
.rail-body p { font-size: 14px; color: var(--muted); max-width: 620px; }
.rail-body code {
  font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12.5px;
  color: var(--gold-2); background: rgba(224,182,96,.07); padding: 2px 7px; border-radius: 5px;
}

/* ---------- compare ---------- */
.compare { padding: 84px 0; }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.compare-card { padding: 32px 30px; border-radius: 18px; border: 1px solid var(--line); background: var(--panel); }
.compare-card.bot { border-color: rgba(224,182,96,.26); background: linear-gradient(180deg, rgba(224,182,96,.07), rgba(224,182,96,.015)); }
.compare-card h3 { font-size: 18px; margin-bottom: 6px; display: flex; align-items: center; gap: 10px; }
.compare-card .sub { font-size: 12.5px; color: var(--muted-2); margin-bottom: 20px; }
.compare-card dl { display: grid; grid-template-columns: auto 1fr; gap: 12px 16px; margin: 0; }
.compare-card dt { font-size: 12.5px; color: var(--muted-2); }
.compare-card dd { margin: 0; font-size: 13.5px; color: var(--text); }

@media (max-width: 980px) {
  .mb-hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .ledger-grid { grid-template-columns: 1fr; }
  .ledger-item:nth-child(even) { padding-left: 0; border-left: 0; }
  .compare-grid { grid-template-columns: 1fr; }
  .cmd-row { grid-template-columns: 1fr; gap: 6px; }
  .cmd-row .who { text-align: left; }
  .cmd-row.head { display: none; }
}
@media (max-width: 640px) {
  .mb-hero h1 { font-size: 30px; }
  .rail-item { grid-template-columns: 58px 1fr; gap: 18px; }
  .rail-n { width: 58px; height: 44px; font-size: 13px; }
  .rail-item::before { left: 28px; top: 48px; }
  .mb-hero { padding: 48px 0 60px; }
}