/* =============================================================================
   Spider-fire · AI 产品咨询（v1.72.0）—— 独立站点样式
   风格取自 DeepSeek：极简、大留白、单一强调色、气泡不炫技、欢迎页给可点能力卡。
   对比度自检（白底）：#111B21 15.9:1 · #54656F 5.7:1 · #4D6BFE 4.7:1 · #C0392B 5.4:1
   ========================================================================== */
:root {
  --ai-brand: #4D6BFE;
  --ai-brand-d: #3B4FE0;
  --ai-brand-soft: #EEF1FF;
  --ai-ink: #111B21;
  --ai-sub: #54656F;
  --ai-line: #E6E8EC;
  --ai-panel: #FFFFFF;
  --ai-bg: #F7F8FA;
  --ai-soft: #F1F3F6;
  --ai-warn: #C0392B;
  --ai-ok: #008069;
  --ai-r: 14px;
  --ai-sh: 0 1px 2px rgba(17, 27, 33, .05), 0 8px 24px -14px rgba(17, 27, 33, .18);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--ai-bg); color: var(--ai-ink);
  font: 15px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  display: flex; flex-direction: column;
}
button { font: inherit; cursor: pointer; }
input, textarea { font: inherit; color: inherit; }

/* ---------------- 顶栏 ---------------- */
.ai-top {
  flex: 0 0 auto; height: 58px; display: flex; align-items: center; gap: 10px;
  padding: 0 20px; background: var(--ai-panel); border-bottom: 1px solid var(--ai-line);
}
.ai-logo {
  width: 28px; height: 28px; border-radius: 9px; display: grid; place-items: center;
  background: linear-gradient(140deg, var(--ai-brand), #7A8CFF); color: #fff; font-weight: 700; font-size: 14px;
}
.ai-brand { font-weight: 650; letter-spacing: .2px; }
.ai-brand small { color: var(--ai-sub); font-weight: 400; margin-left: 8px; font-size: 12.5px; }
.ai-top .sp { flex: 1; }
.ai-chip {
  font-size: 12px; padding: 3px 9px; border-radius: 999px; background: var(--ai-soft); color: var(--ai-sub);
  border: 1px solid var(--ai-line); white-space: nowrap;
}
.ai-chip.on { background: #E8F5F1; color: var(--ai-ok); border-color: #C9E7DF; }
.ai-chip.human { background: var(--ai-brand-soft); color: var(--ai-brand-d); border-color: #D8DFFF; }
.ai-chip.ordered { background: #EAF6EE; color: #1B7A3D; border-color: #CBE7D5; }

/* ---------------- 主体 ---------------- */
.ai-main { flex: 1 1 auto; min-height: 0; display: flex; justify-content: center; gap: 18px; padding: 18px; }
.ai-col { flex: 1 1 auto; max-width: 820px; min-width: 0; display: flex; flex-direction: column; background: var(--ai-panel); border: 1px solid var(--ai-line); border-radius: var(--ai-r); box-shadow: var(--ai-sh); overflow: hidden; }
.ai-stream { flex: 1 1 auto; overflow-y: auto; padding: 26px 26px 8px; }

/* 欢迎页 */
.ai-hero { max-width: 640px; margin: 6vh auto 0; text-align: center; }
.ai-hero h1 { font-size: 27px; font-weight: 650; margin: 0 0 8px; letter-spacing: .2px; }
.ai-hero p { color: var(--ai-sub); margin: 0 0 22px; font-size: 14px; }
.ai-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; text-align: left; }
.ai-card {
  border: 1px solid var(--ai-line); border-radius: 12px; padding: 12px 13px; background: var(--ai-panel);
  transition: border-color .15s, transform .15s, box-shadow .15s; cursor: pointer;
}
.ai-card:hover { border-color: #C9D2FF; transform: translateY(-1px); box-shadow: var(--ai-sh); }
.ai-card b { display: block; font-size: 13.5px; margin-bottom: 3px; font-weight: 600; }
.ai-card span { color: var(--ai-sub); font-size: 12.5px; }

/* 气泡 */
.ai-row { display: flex; gap: 10px; margin-bottom: 18px; }
.ai-row.me { flex-direction: row-reverse; }
.ai-av { flex: 0 0 30px; width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; font-size: 14px; background: var(--ai-soft); }
.ai-row.me .ai-av { background: var(--ai-brand-soft); }
.ai-bub { max-width: min(78%, 620px); padding: 10px 13px; border-radius: 12px; background: var(--ai-soft); white-space: pre-wrap; word-break: break-word; font-size: 14.5px; }
.ai-row.me .ai-bub { background: var(--ai-brand); color: #fff; }
.ai-row.sys .ai-bub { background: #FBF7EC; color: #7A5A16; font-size: 13px; text-align: center; max-width: 100%; width: 100%; }
.ai-src { margin-top: 7px; font-size: 11.5px; color: var(--ai-sub); display: flex; align-items: center; gap: 5px; }
.ai-src em { font-style: normal; background: var(--ai-panel); border: 1px solid var(--ai-line); border-radius: 999px; padding: 1px 7px; }
.ai-row.me .ai-src { display: none; }
.ai-typing { color: var(--ai-sub); font-size: 13px; padding-left: 40px; margin: -8px 0 14px; }

/* 输入区 */
.ai-inputwrap { flex: 0 0 auto; border-top: 1px solid var(--ai-line); padding: 12px 16px 10px; background: var(--ai-panel); }
.ai-inputbox { display: flex; align-items: flex-end; gap: 9px; border: 1px solid var(--ai-line); border-radius: 12px; padding: 8px 10px; background: var(--ai-panel); transition: border-color .15s, box-shadow .15s; }
.ai-inputbox:focus-within { border-color: #BFCAFF; box-shadow: 0 0 0 3px rgba(77, 107, 254, .10); }
.ai-inputbox textarea {
  flex: 1; border: 0; outline: 0; resize: none; max-height: 132px; min-height: 24px; line-height: 1.55;
  background: transparent; padding: 4px 2px;
}
.ai-send {
  flex: 0 0 auto; width: 34px; height: 34px; border-radius: 10px; border: 0; background: var(--ai-brand); color: #fff;
  display: grid; place-items: center; font-size: 15px;
}
.ai-send:disabled { background: #C9D0E0; cursor: not-allowed; }
.ai-tip { color: var(--ai-sub); font-size: 11.5px; text-align: center; margin-top: 7px; }

/* ---------------- 右侧要素卡 ---------------- */
.ai-side { flex: 0 0 288px; display: flex; flex-direction: column; gap: 12px; }
@media (max-width: 1100px) { .ai-side { display: none; } }
.ai-panel { background: var(--ai-panel); border: 1px solid var(--ai-line); border-radius: var(--ai-r); box-shadow: var(--ai-sh); overflow: hidden; }
.ai-panel h3 { margin: 0; padding: 11px 13px; font-size: 13px; font-weight: 650; border-bottom: 1px solid var(--ai-line); display: flex; align-items: center; gap: 7px; }
.ai-panel h3 .sp { flex: 1; }
.ai-panel .body { padding: 11px 13px; }
.ai-kv { display: flex; justify-content: space-between; gap: 10px; font-size: 13px; padding: 5px 0; border-bottom: 1px dashed var(--ai-line); }
.ai-kv:last-child { border-bottom: 0; }
.ai-kv span { color: var(--ai-sub); }
.ai-kv b { font-weight: 600; text-align: right; word-break: break-all; }
.ai-empty { color: var(--ai-sub); font-size: 12.5px; }
.ai-btn { width: 100%; border: 0; border-radius: 10px; padding: 9px 12px; background: var(--ai-brand); color: #fff; font-weight: 600; }
.ai-btn:disabled { background: #C9D0E0; cursor: not-allowed; }
.ai-btn.ghost { background: var(--ai-soft); color: var(--ai-ink); font-weight: 500; }
.ai-note { color: var(--ai-sub); font-size: 11.5px; margin-top: 7px; line-height: 1.5; }
.ai-note.err { color: var(--ai-warn); }
.ai-prog { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--ai-sub); }
.ai-prog i { width: 7px; height: 7px; border-radius: 50%; background: var(--ai-line); display: block; }
.ai-prog i.on { background: var(--ai-brand); }

/* ---------------- 浮层（留资 / 立单结果） ---------------- */
.ai-modal { position: fixed; inset: 0; background: rgba(17, 27, 33, .38); display: grid; place-items: center; padding: 20px; z-index: 50; }
.ai-modal[hidden] { display: none; }
.ai-modal .box { width: 100%; max-width: 420px; background: var(--ai-panel); border-radius: 16px; padding: 20px; box-shadow: 0 20px 60px -20px rgba(17, 27, 33, .4); }
.ai-modal h3 { margin: 0 0 6px; font-size: 16px; }
.ai-modal .sub { color: var(--ai-sub); font-size: 13px; margin: 0 0 14px; }
.ai-modal label { display: block; font-size: 12.5px; color: var(--ai-sub); margin: 10px 0 4px; }
.ai-modal input { width: 100%; padding: 9px 11px; border: 1px solid var(--ai-line); border-radius: 9px; outline: 0; }
.ai-modal input:focus { border-color: #BFCAFF; box-shadow: 0 0 0 3px rgba(77, 107, 254, .10); }
.ai-modal .row { display: flex; gap: 9px; margin-top: 16px; }
.ai-modal .row button { flex: 1; }
.ai-modal .msg { font-size: 12.5px; color: var(--ai-warn); margin-top: 9px; min-height: 18px; }
.ai-code { font-family: ui-monospace, Consolas, monospace; background: var(--ai-soft); padding: 2px 6px; border-radius: 6px; user-select: all; }