/* ═══════════════════════════════════════════════════════════
   AI 工具选型器 · 样式
   复用 AI 星图主站设计系统（翡翠绿）
   ═══════════════════════════════════════════════════════════ */

:root{
  --brand:#0da56b;
  --brand-deep:#0a8a58;
  --gold:#d99a1c;
  --text:#16301f;
  --text-dim:#5d7465;
  --text-faint:#94a99b;
  --stroke:#e2ebe5;
  --stroke-strong:#cddfd2;
  --bg:#f6f9f7;
  --bg2:#edf4ef;
  --white:#fff;
  --radius:10px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:"SF Mono",Menlo,Consolas,"Courier New",monospace;
  --grad:linear-gradient(135deg,#0da56b,#1fbf7e);
  --sh:0 1px 2px rgba(22,48,31,.04),0 4px 16px rgba(22,48,31,.05);
  --sh2:0 2px 6px rgba(22,48,31,.06),0 12px 32px rgba(22,48,31,.08);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font);font-size:15px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
button{font-family:inherit;cursor:pointer}
h1,h2,h3{margin:0;font-weight:700;letter-spacing:-.01em}

/* ── 顶栏 ────────────────────────────────────────────────── */
.pk-header{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 20px;height:58px;
  background:rgba(255,255,255,.9);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--stroke);
}
.pk-logo{display:flex;align-items:center;gap:9px;color:var(--text);flex:0 0 auto}
.pk-logo:hover{text-decoration:none}
.pk-logo-mark{
  width:28px;height:28px;border-radius:8px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;letter-spacing:.02em;
}
.pk-logo-txt{font-size:16px;font-weight:800;display:flex;align-items:baseline;gap:6px}
.pk-logo-sub{
  font-size:11px;font-weight:600;color:var(--brand);
  background:var(--bg2);border:1px solid var(--stroke-strong);
  padding:1px 6px;border-radius:5px;letter-spacing:0;
}
.pk-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.pk-nav a{
  font-size:13.5px;color:var(--text-dim);padding:6px 10px;border-radius:7px;
  white-space:nowrap;
}
.pk-nav a:hover{color:var(--brand);background:var(--bg2);text-decoration:none}
.pk-nav a.is-on{color:var(--brand);font-weight:600;background:var(--bg2)}
.pk-restart{
  font-size:13px;color:var(--brand);background:none;
  border:1px solid var(--stroke-strong);border-radius:7px;padding:5px 10px;
  margin-left:4px;
}
.pk-restart:hover{background:var(--bg2)}

/* ── 主容器 ──────────────────────────────────────────────── */
.pk-main{max-width:1440px;margin:0 auto;padding:34px 26px 60px}

/* ── 开场 ────────────────────────────────────────────────── */
.pk-hero{text-align:center;padding:26px 0 10px}
.pk-kicker{
  display:inline-block;margin:0 0 18px;
  font-size:12.5px;color:var(--text-dim);
  background:var(--white);border:1px solid var(--stroke);
  padding:5px 14px;border-radius:100px;
}
.pk-kicker b{color:var(--brand)}
.pk-hero h1{
  font-size:clamp(24px,4.6vw,35px);line-height:1.32;
  margin-bottom:16px;letter-spacing:-.02em;
}
.pk-lead{
  max-width:600px;margin:0 auto 22px;
  font-size:15px;color:var(--text-dim);line-height:1.8;
}
.pk-facts{
  list-style:none;padding:0;margin:0 auto 30px;max-width:600px;
  display:flex;flex-wrap:wrap;justify-content:center;gap:8px 10px;
}
.pk-facts li{
  font-size:12.5px;color:var(--text-dim);
  background:var(--white);border:1px solid var(--stroke);
  padding:5px 12px;border-radius:100px;
}
.pk-facts b{color:var(--brand);font-weight:600}

/* ── 按钮 ────────────────────────────────────────────────── */
.pk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  font-size:14.5px;font-weight:600;color:#fff;background:var(--grad);
  border:none;border-radius:9px;padding:11px 26px;
  box-shadow:0 2px 8px rgba(13,165,107,.22);
  transition:transform .12s ease,box-shadow .16s ease,filter .16s ease;
}
.pk-btn:hover{filter:brightness(1.05);box-shadow:0 4px 14px rgba(13,165,107,.3);text-decoration:none}
.pk-btn:active{transform:translateY(1px)}
.pk-btn-lg{font-size:15.5px;padding:14px 42px;border-radius:11px}
.pk-btn-ghost{
  background:var(--white);color:var(--text-dim);
  border:1px solid var(--stroke-strong);box-shadow:none;
}
.pk-btn-ghost:hover{
  color:var(--brand);border-color:var(--brand);filter:none;
  box-shadow:0 1px 4px rgba(13,165,107,.12);
}
.pk-btn-ghost:active{transform:translateY(1px)}
.pk-btn[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none}
.pk-btn[disabled]:hover{filter:none}

/* ── 问答 ────────────────────────────────────────────────── */
.pk-quiz{padding:8px 0 0}
.pk-prog{display:flex;align-items:center;gap:12px;margin-bottom:26px}
.pk-prog-bar{
  flex:1;height:4px;background:var(--bg2);
  border-radius:100px;overflow:hidden;
}
.pk-prog-bar i{
  display:block;height:100%;width:25%;background:var(--grad);
  border-radius:100px;transition:width .34s cubic-bezier(.4,0,.2,1);
}
.pk-prog-txt{
  font-size:12.5px;color:var(--text-faint);
  font-variant-numeric:tabular-nums;white-space:nowrap;
}

.pk-q{margin-bottom:18px}
.pk-q-t{font-size:clamp(19px,3vw,23px);line-height:1.4;margin-bottom:6px}
.pk-q-sub{margin:0 0 20px;font-size:13.5px;color:var(--text-faint)}

.pk-opts{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.pk-opt{
  display:flex;align-items:flex-start;gap:11px;text-align:left;
  background:var(--white);border:1px solid var(--stroke);
  border-radius:var(--radius);padding:13px 15px;
  transition:border-color .16s ease,box-shadow .16s ease,transform .12s ease;
}
.pk-opt:hover{
  border-color:var(--brand);box-shadow:0 2px 10px rgba(13,165,107,.13);
  transform:translateY(-1px);
}
.pk-opt-ico{
  flex:0 0 auto;width:30px;height:30px;border-radius:8px;
  background:var(--bg2);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;line-height:1;
}
.pk-opt-body{min-width:0;flex:1}
.pk-opt-l{display:block;font-size:14px;font-weight:600;margin-bottom:2px}
.pk-opt-d{display:block;font-size:12.5px;color:var(--text-faint);line-height:1.5}
.pk-opt-wide{grid-column:1/-1}

/* 已回答回显 */
.pk-answers{
  display:flex;flex-wrap:wrap;gap:7px;margin-top:20px;
  padding-top:16px;border-top:1px dashed var(--stroke);
}
.pk-answers:empty{display:none}
.pk-ans{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;color:var(--text-dim);
  background:var(--white);border:1px solid var(--stroke);
  padding:4px 11px;border-radius:100px;
}
.pk-ans b{color:var(--text);font-weight:600}
.pk-ans em{color:var(--brand);font-style:normal;font-weight:600}

.pk-quiz-foot{
  display:flex;align-items:center;gap:12px;margin-top:22px;
}
.pk-hint{font-size:12.5px;color:var(--text-faint)}

/* ── 结果 ────────────────────────────────────────────────── */
.pk-result{padding:4px 0 0}
.pk-concl{
  background:var(--white);border:1px solid var(--stroke);
  border-left:3px solid var(--brand);
  border-radius:var(--radius);padding:20px 22px;margin-bottom:14px;
  font-size:15.5px;line-height:1.85;
  box-shadow:var(--sh);
}
.pk-concl b{color:var(--brand);font-weight:700}
.pk-concl .pk-cq{
  display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px;
}
.pk-concl .pk-cq i{
  font-style:normal;font-size:12px;color:var(--text-dim);
  background:var(--bg2);border-radius:5px;padding:2px 8px;
}

.pk-relax{
  background:#fffbf0;border:1px solid #f2e2bd;border-radius:var(--radius);
  padding:11px 15px;margin-bottom:22px;
  font-size:13px;color:#8a6414;line-height:1.7;
}
.pk-relax ul{margin:0;padding-left:18px}
.pk-relax li{margin:2px 0}

.pk-sec-head{margin:26px 0 14px}
.pk-sec-head h2{font-size:17px}
.pk-sec-head-2{margin-top:38px}
.pk-sec-sub{margin:4px 0 0;font-size:13px;color:var(--text-faint)}

.pk-rec{display:flex;flex-direction:column;gap:12px}
.pk-card{
  position:relative;
  background:var(--white);border:1px solid var(--stroke);
  border-radius:var(--radius);padding:17px 18px;
  box-shadow:var(--sh);transition:box-shadow .18s ease,border-color .18s ease;
}
.pk-card:hover{box-shadow:var(--sh2);border-color:var(--stroke-strong)}
.pk-card-top{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px;
}
.pk-rank{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;
  background:var(--grad);color:#fff;font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.pk-card-1 .pk-rank{background:linear-gradient(135deg,#d99a1c,#eab538)}
.pk-name{font-size:16px;font-weight:700;margin:0}
.pk-name a{color:var(--text)}
.pk-name a:hover{color:var(--brand);text-decoration:none}
.pk-best{
  font-size:11px;font-weight:700;color:#8a6414;background:#fdf3dd;
  border:1px solid #f0e0b8;border-radius:5px;padding:1px 7px;
}
.pk-badge{
  font-size:10.5px;font-weight:700;letter-spacing:.03em;
  border-radius:4px;padding:1.5px 6px;
}
.pk-badge.TOP{color:#8a6414;background:#fdf3dd;border:1px solid #f0e0b8}
.pk-badge.ED{color:var(--brand-deep);background:#e6f6ee;border:1px solid #c2e6d4}
.pk-badge.NEW{color:#1a6fb0;background:#eaf3fc;border:1px solid #c9e0f5}
.pk-card-desc{
  margin:0 0 12px;font-size:13.5px;color:var(--text-dim);line-height:1.7;
}
.pk-why{
  display:flex;gap:8px;align-items:flex-start;
  background:var(--bg2);border-radius:8px;padding:10px 12px;
  font-size:13px;line-height:1.7;color:var(--text);margin-bottom:11px;
}
.pk-why::before{
  content:"推荐理由";flex:0 0 auto;
  font-size:11px;font-weight:700;color:var(--brand);
  background:#fff;border:1px solid var(--stroke-strong);
  border-radius:4px;padding:1px 6px;margin-top:1px;
}
.pk-meta{
  display:flex;flex-wrap:wrap;gap:6px 8px;align-items:center;
}
.pk-tag{
  font-size:12px;color:var(--text-dim);
  background:var(--bg);border:1px solid var(--stroke);
  border-radius:6px;padding:2.5px 9px;
  display:inline-flex;align-items:center;gap:5px;
}
.pk-tag b{color:var(--text);font-weight:600}
.pk-tag.is-price{color:#8a6414;background:#fdf9ee;border-color:#f0e4c4}
.pk-tag.is-net-bad{color:#a2502f;background:#fdf1ec;border-color:#f2d9cd}
.pk-warn{
  display:flex;align-items:center;gap:6px;flex-wrap:wrap;
  margin-top:10px;padding-top:10px;border-top:1px dashed var(--stroke);
  font-size:12.5px;color:#a2502f;
}
.pk-warn i{
  font-style:normal;background:#fdf1ec;border:1px solid #f2d9cd;
  border-radius:5px;padding:1.5px 8px;
}
.pk-alt-line{
  margin-top:10px;padding-top:10px;border-top:1px dashed var(--stroke);
  font-size:12.5px;color:var(--text-faint);
}
.pk-alt-line b{color:var(--text-dim);font-weight:600}
.pk-url{
  font-family:var(--mono);font-size:11.5px;color:var(--text-faint);
  word-break:break-all;margin-top:4px;
}
.pk-visit{
  display:inline-flex;align-items:center;gap:4px;
  font-size:12.5px;font-weight:600;color:var(--brand);
  margin-left:auto;white-space:nowrap;
}
.pk-card-foot{
  display:flex;align-items:flex-end;gap:10px;margin-top:12px;
  padding-top:12px;border-top:1px solid var(--stroke);
}

/* 自动推断层标注 */
.pk-auto-note{
  font-size:12px;color:var(--text-faint);
  background:var(--bg);border:1px dashed var(--stroke-strong);
  border-radius:var(--radius);padding:12px 15px;line-height:1.75;
}
.pk-auto-note b{color:var(--text-dim)}

.pk-more{margin-top:14px}
.pk-alt{
  margin-top:12px;display:flex;flex-direction:column;gap:8px;
}
.pk-alt-row{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  background:var(--white);border:1px solid var(--stroke);
  border-radius:8px;padding:10px 14px;font-size:13.5px;
}
.pk-alt-row .pk-alt-n{font-weight:600;min-width:96px}
.pk-alt-row .pk-alt-d{
  color:var(--text-faint);font-size:12.5px;flex:1;min-width:150px;
}
.pk-alt-row a{font-size:12.5px;font-weight:600;white-space:nowrap}

/* ── 换条件 chips ───────────────────────────────────────── */
.pk-chips{display:flex;flex-direction:column;gap:9px}
.pk-chip-row{
  display:flex;align-items:baseline;gap:9px;flex-wrap:wrap;
  padding:11px 14px;background:var(--white);
  border:1px solid var(--stroke);border-radius:var(--radius);
}
.pk-chip-k{
  flex:0 0 auto;font-size:12.5px;color:var(--text-faint);
  min-width:66px;
}
.pk-chip{
  font-size:12.5px;color:var(--text-dim);
  background:var(--bg);border:1px solid var(--stroke);
  border-radius:100px;padding:3.5px 12px;
  transition:all .15s ease;
}
.pk-chip:hover{border-color:var(--brand);color:var(--brand)}
.pk-chip.is-on{
  background:var(--grad);border-color:transparent;color:#fff;font-weight:600;
}

.pk-actions{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;
}
.pk-dis{
  margin:20px 0 0;font-size:12px;color:var(--text-faint);line-height:1.75;
}

/* ── 空态 ────────────────────────────────────────────────── */
.pk-empty{
  text-align:center;padding:52px 20px;
  background:var(--white);border:1px solid var(--stroke);
  border-radius:var(--radius);
}
.pk-empty h2{font-size:18px;margin-bottom:10px}
.pk-empty p{
  font-size:14px;color:var(--text-dim);
  max-width:440px;margin:0 auto 24px;line-height:1.8;
}
.pk-empty .pk-actions{justify-content:center;margin-top:0}

/* ── 页脚 ────────────────────────────────────────────────── */
.pk-footer{
  border-top:1px solid var(--stroke);background:var(--white);
  padding:28px 20px 34px;text-align:center;
}
.pk-foot-links{
  margin:0 0 10px;font-size:13px;color:var(--text-faint);
  display:flex;justify-content:center;flex-wrap:wrap;gap:8px;
}
.pk-foot-links a{color:var(--text-dim)}
.pk-foot-links span{color:var(--stroke-strong)}
.pk-foot-note{margin:0;font-size:12px;color:var(--text-faint)}
.p-beian{
  margin-top:10px;display:flex;justify-content:center;
  align-items:center;gap:8px 16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-faint);
}
.p-beian a{color:var(--text-faint);text-decoration:none}
.p-beian a:hover{color:var(--brand);text-decoration:none}

/* ── Toast ───────────────────────────────────────────────── */
.pk-toast{
  position:fixed;left:50%;bottom:34px;transform:translate(-50%,14px);
  background:#16301f;color:#fff;font-size:13px;
  padding:10px 20px;border-radius:9px;
  box-shadow:0 8px 28px rgba(22,48,31,.28);
  opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease;
  z-index:60;max-width:86vw;text-align:center;
}
.pk-toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ── 响应式 ──────────────────────────────────────────────── */
@media (max-width:640px){
  .pk-header{padding:0 14px;height:54px;gap:10px}
  .pk-logo-sub{display:none}
  .pk-nav a{padding:6px 8px;font-size:13px}
  .pk-nav a:nth-child(2),
  .pk-nav a:nth-child(3){display:none}
  .pk-main{padding:24px 15px 48px}
  .pk-opts{grid-template-columns:1fr}
  .pk-hero h1{font-size:23px}
  .pk-btn-lg{width:100%;padding:13px 20px}
  .pk-concl{padding:17px 16px;font-size:14.5px}
  .pk-card{padding:15px 14px}
  .pk-visit{margin-left:0;width:100%;margin-top:6px}
  .pk-card-foot{flex-direction:column;align-items:stretch}
  .pk-chip-k{min-width:auto;width:100%}
  .pk-actions .pk-btn{flex:1;min-width:130px}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}