:root {
  --ink: #08100e;
  --paper: #f7f4e9;
  --soft: #fffdf5;
  --muted: #68716b;
  --line: rgba(8, 16, 14, 0.14);
  --green: #168866;
  --lime: #d9ff5f;
  --cyan: #a8eee2;
  --blue: #486cff;
  --shadow: 0 30px 100px rgba(8, 16, 14, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "Albert Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 82% 10%, rgba(217, 255, 95, 0.45), transparent 22rem),
    radial-gradient(circle at 9% 20%, rgba(72, 108, 255, 0.14), transparent 24rem),
    linear-gradient(rgba(8, 16, 14, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(8, 16, 14, 0.045) 1px, transparent 1px),
    var(--paper);
  background-size: auto, auto, 44px 44px, 44px 44px, auto;
}
a { color: inherit; text-decoration: none; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  border-bottom: 1px solid var(--line);
  background: rgba(247, 244, 233, 0.82);
  backdrop-filter: blur(18px);
}
.brand { display: flex; align-items: center; gap: 0.7rem; width: max-content; font-weight: 900; }
.brand span {
  display: grid;
  width: 2.55rem;
  height: 2.55rem;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 0.75rem;
  background: var(--lime);
  box-shadow: 4px 4px 0 var(--ink);
}
nav {
  display: flex;
  gap: 0.25rem;
  padding: 0.25rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 245, 0.78);
}
nav a {
  padding: 0.58rem 0.92rem;
  border-radius: 999px;
  color: #4c554f;
  font-weight: 850;
}
.nav-cta {
  justify-self: end;
  padding: 0.76rem 1.05rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--soft);
  font-weight: 900;
}

.hero, .section, .closing, footer {
  width: min(1180px, calc(100% - 2rem));
  margin-inline: auto;
}
.hero {
  display: grid;
  min-height: calc(100vh - 4.8rem);
  grid-template-columns: minmax(0, 0.92fr) minmax(31rem, 1.08fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding: clamp(4rem, 7vw, 7rem) 0 4rem;
}
.eyebrow {
  margin: 0 0 1rem;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 950;
  letter-spacing: 0;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 9em;
  margin-bottom: 1.2rem;
  font-size: clamp(3.3rem, 6.8vw, 7.1rem);
  line-height: 0.92;
}
.lead {
  max-width: 44rem;
  color: #39443e;
  font-size: clamp(1.05rem, 1.5vw, 1.28rem);
  font-weight: 650;
  line-height: 1.78;
}
.actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2rem; }
.button {
  display: inline-flex;
  min-height: 3.1rem;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.18rem;
  border: 1px solid var(--ink);
  border-radius: 0.8rem;
  font-weight: 950;
}
.button.primary { background: var(--ink); color: var(--soft); box-shadow: 5px 5px 0 var(--lime); }
.button.secondary { background: rgba(255, 253, 245, 0.78); }

.mission-room {
  overflow: hidden;
  border: 1px solid var(--ink);
  border-radius: 1.25rem;
  background: var(--soft);
  box-shadow: var(--shadow), 8px 8px 0 var(--ink);
}
.window-bar {
  display: flex;
  justify-content: space-between;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--ink);
  background: #ebe7db;
  color: #4b514b;
  font-weight: 900;
}
.window-bar b { color: var(--green); }
.room-grid { display: grid; grid-template-columns: 12rem 1fr; min-height: 35rem; }
.room-grid aside {
  display: grid;
  align-content: start;
  gap: 0.75rem;
  padding: 1rem;
  border-right: 1px solid var(--ink);
  background: #f2eee2;
}
.room-grid em {
  padding: 0.75rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: rgba(255, 253, 245, 0.86);
  font-style: normal;
  font-weight: 850;
}
.room-grid em.active { border-color: var(--ink); background: var(--lime); }
.room-grid section {
  display: grid;
  align-content: center;
  gap: 1rem;
  padding: 1.2rem;
  background:
    radial-gradient(circle at 76% 18%, rgba(217, 255, 95, 0.52), transparent 12rem),
    linear-gradient(rgba(8, 16, 14, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(8, 16, 14, 0.05) 1px, transparent 1px),
    #fffdf5;
  background-size: auto, 34px 34px, 34px 34px, auto;
}
.question {
  justify-self: end;
  max-width: 82%;
  padding: 0.9rem 1rem;
  border-radius: 1rem;
  background: var(--ink);
  color: var(--soft);
  font-weight: 900;
  line-height: 1.55;
}
.answer {
  display: grid;
  gap: 0.45rem;
  max-width: 84%;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(255, 253, 245, 0.88);
}
.answer p { margin: 0; color: var(--muted); line-height: 1.65; }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; }
.metrics article {
  padding: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: rgba(255, 253, 245, 0.82);
}
.metrics span, .metrics b { display: block; }
.metrics span { color: var(--muted); font-size: 0.78rem; }
.metrics b { margin-top: 0.2rem; color: var(--green); font-size: 1.8rem; }

.section { padding: clamp(4.5rem, 8vw, 7rem) 0 0; }
.section-head {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.section-head h2 {
  max-width: 13em;
  margin: 0;
  font-size: clamp(2.15rem, 4vw, 4.35rem);
  line-height: 1.03;
}

.fde-grid, .evidence-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.fde-grid article, .evidence-grid article {
  min-height: 18rem;
  padding: 1.3rem;
  border: 1px solid var(--ink);
  border-radius: 1.15rem;
  background: var(--soft);
  box-shadow: 4px 4px 0 rgba(8, 16, 14, 0.16);
}
.fde-grid span {
  display: block;
  margin-bottom: 4rem;
  color: var(--green);
  font-size: 2.2rem;
  font-weight: 950;
}
.fde-grid p, .evidence-grid p, .copy span { color: var(--muted); line-height: 1.7; }

.architecture-board {
  display: grid;
  gap: 0.8rem;
  padding: 1rem;
  border: 1px solid var(--ink);
  border-radius: 1.25rem;
  background: var(--soft);
  box-shadow: 7px 7px 0 var(--ink);
}
.architecture-board > i {
  display: block;
  color: var(--green);
  text-align: center;
}
.architecture-board > i::before { content: "↓"; font-size: 1.5rem; font-weight: 950; }
.arch-row {
  display: grid;
  grid-template-columns: 9rem repeat(5, 1fr);
  gap: 0.7rem;
  align-items: center;
  padding: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.95rem;
}
.arch-row.highlight { background: rgba(217, 255, 95, 0.22); }
.arch-row b { color: var(--green); }
.arch-row span {
  display: grid;
  min-height: 3rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: rgba(255, 253, 245, 0.78);
  text-align: center;
  font-weight: 850;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.8rem;
}
.timeline article {
  min-height: 10rem;
  padding: 1rem;
  border: 1px solid var(--ink);
  border-radius: 1rem;
  background: var(--soft);
}
.timeline b, .timeline span { display: block; }
.timeline b { margin-bottom: 2rem; font-size: 1.3rem; }
.timeline span { color: var(--muted); line-height: 1.5; }

.blueprint-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.blueprint {
  display: grid;
  gap: 1rem;
  min-height: 28rem;
  padding: 1.25rem;
  border: 1px solid var(--ink);
  border-radius: 1.15rem;
  background: var(--soft);
  box-shadow: 4px 4px 0 rgba(8, 16, 14, 0.16);
}
.blueprint.ai-card {
  grid-column: span 2;
  grid-row: span 2;
  color: var(--soft);
  background:
    radial-gradient(circle at 78% 12%, rgba(217, 255, 95, 0.82), transparent 14rem),
    var(--ink);
}
.copy p {
  margin-bottom: 1rem;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 950;
  text-transform: uppercase;
}
.ai-card .copy p, .ai-card a { color: var(--lime); }
.copy h3 { margin-bottom: 0.65rem; font-size: clamp(1.5rem, 2.4vw, 2.8rem); line-height: 1; }
.ai-card .copy h3 { font-size: clamp(3rem, 5vw, 5.4rem); }
.ai-card .copy span { color: rgba(255, 253, 245, 0.74); }
.preview {
  min-height: 8rem;
  padding: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.95rem;
  background:
    linear-gradient(rgba(8, 16, 14, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(8, 16, 14, 0.04) 1px, transparent 1px),
    rgba(255, 253, 245, 0.72);
  background-size: 22px 22px;
}
.ai-preview {
  display: grid;
  gap: 0.7rem;
  min-height: 15rem;
  border-color: rgba(255, 253, 245, 0.2);
  background:
    linear-gradient(rgba(255, 253, 245, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 253, 245, 0.06) 1px, transparent 1px),
    rgba(255, 253, 245, 0.08);
  background-size: 26px 26px;
}
.bubble {
  width: fit-content;
  max-width: 88%;
  padding: 0.75rem 0.9rem;
  border: 1px solid rgba(255, 253, 245, 0.22);
  border-radius: 0.9rem;
  color: var(--soft);
  font-weight: 850;
}
.bubble.ask { justify-self: end; background: rgba(217, 255, 95, 0.18); }
.bubble.reply { background: rgba(255, 253, 245, 0.1); }
.chips { display: flex; flex-wrap: wrap; gap: 0.55rem; align-self: end; }
.chips span {
  padding: 0.45rem 0.62rem;
  border: 1px solid rgba(255, 253, 245, 0.2);
  border-radius: 999px;
  color: var(--lime);
  font-size: 0.82rem;
  font-weight: 900;
}
.table-preview { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.45rem; }
.table-preview span { min-height: 2.2rem; border: 1px solid var(--line); border-radius: 0.55rem; background: rgba(22, 136, 102, 0.12); }
.bar-preview { display: flex; align-items: end; gap: 0.45rem; }
.bar-preview i { flex: 1; border: 1px solid var(--ink); border-radius: 0.45rem 0.45rem 0 0; background: linear-gradient(180deg, var(--lime), var(--cyan)); }
.bar-preview i:nth-child(1) { height: 42%; }
.bar-preview i:nth-child(2) { height: 78%; }
.bar-preview i:nth-child(3) { height: 60%; }
.bar-preview i:nth-child(4) { height: 88%; }
.line-preview { display: grid; align-content: center; gap: 0.55rem; }
.line-preview span { height: 0.9rem; border-radius: 999px; background: linear-gradient(90deg, var(--green), var(--lime)); }
.line-preview span:nth-child(2) { width: 82%; }
.line-preview span:nth-child(3) { width: 64%; }
.search-preview { display: grid; align-content: center; gap: 0.75rem; }
.search-preview b { padding: 0.8rem; border: 1px solid var(--ink); border-radius: 999px; background: var(--soft); }
.search-preview span { color: var(--muted); font-weight: 850; }

.mini-map { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.mini-map b { width: 100%; color: var(--green); font-size: 0.78rem; text-transform: uppercase; }
.ai-card .mini-map b { color: var(--lime); }
.mini-map span {
  padding: 0.45rem 0.62rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 245, 0.72);
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 850;
}
.mini-map i { width: 1.2rem; height: 1px; background: var(--green); }
.blueprint a { align-self: end; color: var(--green); font-weight: 950; }

.evidence-grid article { min-height: 13rem; }
.closing { padding: clamp(5rem, 9vw, 8rem) 0; text-align: center; }
.closing h2 { max-width: 13em; margin: 0 auto 2rem; font-size: clamp(2.35rem, 4.2vw, 4.6rem); line-height: 1.03; }
footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  width: min(1180px, calc(100% - 2rem));
  margin-inline: auto;
  padding: 1.5rem 0 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}
footer strong, footer span { display: block; }
footer strong { color: var(--ink); margin-bottom: 0.3rem; }
footer p { max-width: 42rem; margin: 0; text-align: right; line-height: 1.7; }

@media (max-width: 980px) {
  .topbar { grid-template-columns: 1fr auto; }
  nav { grid-column: 1 / -1; grid-row: 2; width: 100%; overflow-x: auto; }
  nav a { flex: 1; text-align: center; }
  .nav-cta { grid-column: 2; grid-row: 1; }
  .hero, .section-head { grid-template-columns: 1fr; }
  .room-grid { grid-template-columns: 1fr; }
  .room-grid aside { grid-template-columns: repeat(4, 1fr); border-right: 0; border-bottom: 1px solid var(--ink); }
  .fde-grid, .evidence-grid, .blueprint-grid { grid-template-columns: 1fr 1fr; }
  .blueprint.ai-card { grid-column: 1 / -1; grid-row: auto; }
  .arch-row { grid-template-columns: 1fr 1fr; }
  .arch-row b { grid-column: 1 / -1; }
  .timeline { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .hero, .section, .closing, footer { width: min(100% - 1rem, 1180px); }
  .hero { padding-top: 3rem; }
  nav a { padding-inline: 0.62rem; font-size: 0.88rem; white-space: nowrap; }
  h1, .section-head h2, .closing h2 { font-size: clamp(2.75rem, 12vw, 4rem); }
  .actions, footer { flex-direction: column; }
  .button { width: 100%; }
  .mission-room, .architecture-board { box-shadow: 4px 4px 0 var(--ink); }
  .room-grid aside, .metrics, .fde-grid, .evidence-grid, .blueprint-grid, .arch-row { grid-template-columns: 1fr; }
  .question, .answer { max-width: 100%; }
  .fde-grid article, .evidence-grid article, .blueprint, .timeline article { min-height: auto; }
  .mini-map i { display: none; }
  footer p { text-align: left; }
}