/* ═══════════════ 孢子推理 · APAA · v2 ═══════════════ */
:root {
  --bg-0: #06090d;
  --bg-1: #0c1219;
  --bg-2: #111922;
  --bg-3: #18222f;
  --ink-0: #e6edf3;
  --ink-1: #a9b6c5;
  --ink-2: #6a7a8c;
  --ink-3: #4a5868;
  --accent-1: #4f8ac9;
  --accent-2: #7fb0d8;
  --accent-3: #2a4d6e;
  --warn:   #d2965a;
  --rule:   rgba(127, 176, 216, 0.12);
  --rule-h: rgba(127, 176, 216, 0.22);
  --ok:     #6cc28a;
  --err:    #d27272;
  --maxw:   920px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  background: var(--bg-0);
  color: var(--ink-0);
  font-family: -apple-system, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-feature-settings: "tnum" on;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed; inset: 0;
  background:
    radial-gradient(900px 500px at 50% -10%, rgba(79, 138, 201, 0.10), transparent 70%),
    radial-gradient(700px 400px at 50% 110%, rgba(42, 77, 110, 0.06), transparent 70%);
  pointer-events: none; z-index: 0;
}
body::after {
  content: "";
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(127, 176, 216, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127, 176, 216, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none; z-index: 0;
  mask-image: linear-gradient(180deg, transparent, black 20%, black 80%, transparent);
}
.wrap { position: relative; z-index: 1; max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }

a { color: inherit; }

/* ═══════ HERO ═══════ */
.hero {
  padding: 96px 0 48px;
  border-bottom: 1px solid var(--rule);
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 0.8s ease 0.1s forwards;
}
.eyebrow {
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  font-size: 11px; letter-spacing: 0.32em;
  color: var(--accent-2); text-transform: uppercase;
  margin-bottom: 18px;
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before {
  content: ""; display: inline-block;
  width: 28px; height: 1px;
  background: var(--accent-3);
}
.eyebrow.idx {
  color: var(--ink-1);
  letter-spacing: 0.24em;
  margin-bottom: 10px;
}
.eyebrow.idx::before { display: none; }
.eyebrow.idx b {
  color: var(--accent-2);
  font-weight: 500;
  margin-right: 8px;
}
.hero-title {
  font-size: clamp(24px, 3.6vw, 40px);
  font-weight: 600; letter-spacing: -0.005em;
  line-height: 1.3;
  max-width: 720px;
  margin-bottom: 18px;
}
.hero-title em {
  font-style: normal;
  color: var(--accent-2);
  position: relative;
  display: inline-block;
}
.hero-title em::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-2), transparent);
}
.hero-sub {
  font-size: 14px;
  color: var(--ink-1);
  letter-spacing: 0.02em;
  max-width: 640px;
  margin-bottom: 22px;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px; color: var(--ink-2);
  letter-spacing: 0.32em;
}
.hero-tag::before {
  content: ""; display: inline-block;
  width: 24px; height: 1px; background: var(--ink-2);
}

/* ═══════ Section 统一 ═══════ */
section {
  padding: 64px 0;
  border-bottom: 1px solid var(--rule);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
section.in { opacity: 1; transform: translateY(0); }
section:last-of-type { border-bottom: 0; }
section > h2 {
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 600; letter-spacing: 0.005em;
  margin: 12px 0 14px;
  color: var(--ink-0);
}
section > h2 em {
  font-style: normal;
  color: var(--accent-2);
  border-bottom: 1px solid var(--rule-h);
  padding-bottom: 2px;
}
.lead {
  font-size: 14px;
  color: var(--ink-1);
  max-width: 640px;
  margin-bottom: 36px;
  line-height: 1.75;
}

/* ═══════ Guide 提示卡 ═══════ */
.guide {
  border: 1px solid var(--rule);
  border-left: 2px solid var(--accent-2);
  border-radius: 2px;
  padding: 20px 24px;
  background: var(--bg-1);
  margin-bottom: 32px;
  transition: border-color 0.3s;
}
.guide:hover { border-color: var(--rule-h); border-left-color: var(--accent-2); }
.guide h3 {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; color: var(--accent-2);
  letter-spacing: 0.18em;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.guide ul { list-style: none; padding: 0; margin-bottom: 10px; }
.guide li {
  position: relative;
  padding: 6px 0 6px 20px;
  font-size: 13px;
  color: var(--ink-1);
  line-height: 1.7;
  border-top: 1px solid var(--rule);
}
.guide li:first-child { border-top: 0; padding-top: 0; }
.guide li::before {
  content: "—";
  position: absolute;
  left: 0; top: 6px;
  color: var(--accent-3);
  font-size: 11px;
  font-family: "JetBrains Mono", monospace;
}
.guide li:first-child::before { top: 0; }
.guide-tip {
  margin-top: 8px;
  font-size: 12px;
  color: var(--ink-2);
  padding-top: 10px;
  border-top: 1px solid var(--rule);
  font-style: italic;
}

/* ═══════ Upload 拖拽区 ═══════ */
.upload { display: flex; flex-direction: column; gap: 18px; }
.upload-area {
  position: relative;
  border: 1px dashed var(--accent-3);
  border-radius: 2px;
  background: var(--bg-1);
  transition: border-color 0.25s, background 0.25s, transform 0.25s;
  overflow: hidden;
}
.upload-area::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(400px 200px at 50% 50%, rgba(79, 138, 201, 0.06), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
}
.upload-area:hover { border-color: var(--accent-2); transform: translateY(-1px); }
.upload-area:hover::before { opacity: 1; }
.upload-area.dragover { border-color: var(--accent-2); background: var(--bg-2); }
.upload-area input[type=file] {
  position: absolute; inset: 0;
  opacity: 0; cursor: pointer; z-index: 2;
}
.upload-label {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 44px 24px;
  cursor: pointer;
  position: relative; z-index: 1;
  pointer-events: none;
}
.upload-icon {
  font-size: 28px;
  color: var(--accent-2);
  margin-bottom: 10px;
  font-family: "JetBrains Mono", monospace;
  font-weight: 300;
  transition: transform 0.3s;
}
.upload-area:hover .upload-icon { transform: translateY(-2px); }
.upload-text {
  font-size: 14px;
  color: var(--ink-0);
  margin-bottom: 4px;
  letter-spacing: 0.04em;
}
.upload-hint {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  color: var(--ink-2);
  letter-spacing: 0.18em;
}
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  align-self: flex-start;
  background: var(--accent-1);
  color: var(--bg-0);
  border: 0;
  padding: 12px 28px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.18em;
  border-radius: 2px;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s, transform 0.15s;
  position: relative;
  overflow: hidden;
}
.btn-primary::after {
  content: "→";
  font-size: 14px;
  transition: transform 0.2s;
}
.btn-primary:hover { background: var(--accent-2); }
.btn-primary:hover::after { transform: translateX(3px); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:disabled { background: var(--ink-3); cursor: not-allowed; }
.btn-primary:disabled::after { content: "···"; transform: none; }

/* ═══════ Result ═══════ */
.result { margin-top: 18px; }
.result:empty { display: none; }
.result-ok, .result-err {
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 18px 22px;
  background: var(--bg-1);
  font-size: 13px;
  color: var(--ink-0);
  line-height: 1.8;
  animation: fadeUp 0.4s ease;
}
.result-ok { border-color: rgba(108, 194, 138, 0.3); border-left: 2px solid var(--ok); }
.result-ok strong { color: var(--ok); display: block; margin-bottom: 6px; font-size: 13px; letter-spacing: 0.08em; }
.result-ok code { font-family: "JetBrains Mono", monospace; color: var(--accent-2); padding: 1px 6px; background: var(--bg-0); border-radius: 2px; font-size: 12px; }
.result-ok .btn-link { display: inline-block; margin-top: 8px; }
.result-tip { margin-top: 8px; font-size: 11px; color: var(--ink-2); font-family: "JetBrains Mono", monospace; letter-spacing: 0.06em; }
.result-err { border-color: rgba(210, 114, 114, 0.3); border-left: 2px solid var(--err); color: var(--err); }

/* ═══════ 4-Layer 评估链路 ═══════ */
.layers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
  background: var(--bg-1);
}
.layer {
  padding: 22px 18px;
  border-right: 1px solid var(--rule);
  position: relative;
  background: linear-gradient(180deg, transparent, var(--bg-0));
  transition: background 0.3s;
  cursor: default;
}
.layer:last-child { border-right: 0; }
.layer:hover { background: var(--bg-2); }
.layer::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 1px;
  background: var(--accent-2);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.layer:hover::before { transform: scaleX(1); }
.layer-num {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px; color: var(--accent-3);
  letter-spacing: 0.2em;
  margin-bottom: 8px;
}
.layer h3 {
  font-size: 14px; font-weight: 600;
  margin: 0 0 3px; color: var(--ink-0);
}
.layer-zh {
  font-size: 10px; color: var(--accent-2);
  letter-spacing: 0.2em;
  font-family: "JetBrains Mono", monospace;
  margin-bottom: 10px;
}
.layer p {
  font-size: 12px;
  color: var(--ink-1);
  line-height: 1.7;
}

/* ═══════ History Table ═══════ */
.hist {
  width: 100%;
  border: 1px solid var(--rule);
  border-radius: 2px;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  font-size: 13px;
  background: var(--bg-1);
}
.hist th, .hist td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--rule);
  vertical-align: middle;
}
.hist th {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px; letter-spacing: 0.2em;
  color: var(--accent-2);
  text-transform: uppercase;
  background: var(--bg-2);
  font-weight: 500;
  border-bottom: 1px solid var(--rule-h);
}
.hist tr:last-child td { border-bottom: 0; }
.hist tr { transition: background 0.15s; }
.hist tbody tr:hover td { background: var(--bg-2); }
.hist td code {
  font-family: "JetBrains Mono", monospace;
  color: var(--accent-2);
  font-size: 11px;
}
.hist .empty {
  text-align: center;
  color: var(--ink-2);
  font-size: 12px;
  padding: 28px 16px;
  font-style: italic;
}
.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 2px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.08em;
  background: var(--bg-2);
  color: var(--ink-1);
  border: 1px solid var(--rule);
}
.badge-done, .badge-completed { color: var(--ok); border-color: rgba(108, 194, 138, 0.3); }
.badge-pending, .badge-processing { color: var(--warn); border-color: rgba(210, 150, 90, 0.3); }
.badge-failed, .badge-error { color: var(--err); border-color: rgba(210, 114, 114, 0.3); }

.btn-link {
  color: var(--accent-2);
  text-decoration: none;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}
.btn-link:hover { color: var(--ink-0); border-color: var(--accent-2); }

/* ═══════ Contact Card ═══════ */
.contact { padding: 80px 0 56px; border-bottom: 0; text-align: center; }
.contact h2 { text-align: center; margin-left: auto; margin-right: auto; }
.card {
  display: inline-block;
  text-align: left;
  background: var(--bg-1);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 28px 32px 22px;
  width: 320px;
  margin: 0 auto;
  position: relative;
  transition: border-color 0.3s, transform 0.3s;
}
.card:hover { border-color: var(--rule-h); transform: translateY(-2px); }
.card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-2), transparent);
  opacity: 0.7;
}
.card-top { padding-bottom: 14px; border-bottom: 1px solid var(--rule); margin-bottom: 16px; }
.card-domain {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; letter-spacing: 0.2em;
  color: var(--accent-2);
  margin-bottom: 4px;
}
.card-name {
  font-size: 22px; font-weight: 600;
  color: var(--ink-0);
  margin: 0 0 4px; letter-spacing: -0.005em;
}
.card-role {
  font-size: 11px; letter-spacing: 0.16em;
  color: var(--ink-1);
}
.card-info { display: grid; gap: 8px; }
.card-row {
  display: grid; grid-template-columns: 20px 1fr;
  align-items: center;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--ink-0);
}
.card-row .card-k { color: var(--accent-3); }
.card-row a { color: var(--ink-0); text-decoration: none; transition: color 0.2s; }
.card-row a:hover { color: var(--accent-2); }
.card-foot {
  margin-top: 18px; padding-top: 14px;
  border-top: 1px solid var(--rule);
  display: flex; align-items: center; justify-content: space-between;
  font-family: "JetBrains Mono", monospace;
  font-size: 9px; letter-spacing: 0.24em;
  color: var(--ink-1);
}
.card-foot .card-sep { color: var(--accent-3); }
.contact .meta {
  margin-top: 32px; font-size: 11px; color: var(--ink-2);
  letter-spacing: 0.12em;
  font-family: "JetBrains Mono", monospace;
  text-align: center;
}

/* ═══════ Footer ═══════ */
.foot {
  padding: 24px 0 40px;
  display: flex; justify-content: space-between;
  font-size: 10px; color: var(--ink-2);
  font-family: "JetBrains Mono", monospace;
  letter-spacing: 0.18em;
  border-top: 1px solid var(--rule);
}

/* ═══════ 动效 ═══════ */
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* 入场：默认隐藏，IO 触发后 .in */
section.in { opacity: 1; transform: translateY(0); }

/* hero tag 脉动 */
.hero-tag { animation: pulse 3.2s ease-in-out infinite 1.5s; }

/* ═══════ Responsive ═══════ */
@media (max-width: 720px) {
  .wrap { padding: 0 20px; }
  .hero { padding: 64px 0 36px; }
  section { padding: 48px 0; }
  .layers { grid-template-columns: 1fr 1fr; }
  .layer { border-right: 0; border-bottom: 1px solid var(--rule); }
  .layers .layer:nth-child(odd) { border-right: 1px solid var(--rule); }
  .layers .layer:last-child { border-bottom: 0; }
  .hist { font-size: 12px; }
  .hist th, .hist td { padding: 10px 10px; }
  .foot { flex-direction: column; gap: 6px; }
  .card { width: 100%; max-width: 360px; }
}
@media (max-width: 460px) {
  .layers { grid-template-columns: 1fr; }
  .layer { border-right: 0; border-bottom: 1px solid var(--rule); }
  .layers .layer:last-child { border-bottom: 0; }
}