/* AI 品牌体检 —— 统一样式 */
:root {
  --bg: #0b1020;
  --bg2: #121a33;
  --card: rgba(255, 255, 255, .055);
  --line: rgba(255, 255, 255, .12);
  --tx: #e8ecf8;
  --tx2: #9aa5c4;
  --acc: #5b8cff;
  --acc2: #28d6a6;
  --warn: #ffb547;
  --err: #ff6b6b;
  --r: 16px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background:
    radial-gradient(1100px 620px at 12% -8%, rgba(91, 140, 255, .22), transparent 60%),
    radial-gradient(900px 520px at 92% 4%, rgba(40, 214, 166, .16), transparent 62%),
    var(--bg);
  color: var(--tx);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--acc); text-decoration: none; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
header.site {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(11, 16, 32, .72);
  border-bottom: 1px solid var(--line);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .3px; }
.logo .dot {
  width: 26px; height: 26px; border-radius: 8px;
  background: linear-gradient(135deg, var(--acc), var(--acc2));
  box-shadow: 0 4px 14px rgba(91, 140, 255, .4);
}
header.site nav { display: flex; gap: 20px; font-size: 14px; color: var(--tx2); }
header.site nav a:hover { color: var(--tx); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 12px; border: 1px solid transparent;
  background: linear-gradient(135deg, var(--acc), #3f6fe0);
  color: #fff; font-weight: 600; cursor: pointer; border: 0;
  font-size: 15px; transition: transform .12s ease, box-shadow .12s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(91, 140, 255, .34); }
.btn.ghost { background: transparent; border-color: var(--line); color: var(--tx); }
.btn.ghost:hover { box-shadow: none; background: rgba(255, 255, 255, .06); }
.btn.lg { padding: 15px 30px; font-size: 17px; }
.btn[disabled] { opacity: .55; cursor: not-allowed; transform: none; }
.hero { padding: 76px 0 44px; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--card); font-size: 13px; color: var(--tx2); margin-bottom: 22px;
}
.eyebrow b { color: var(--acc2); font-weight: 600; }
h1 { font-size: clamp(30px, 5.2vw, 52px); line-height: 1.18; margin: 0 0 18px; letter-spacing: -.5px; }
h1 .grad {
  background: linear-gradient(100deg, #7ea6ff, #43e0b3);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.sub { color: var(--tx2); font-size: clamp(15px, 2.2vw, 18px); max-width: 720px; margin: 0 auto 30px; }
.cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 18px; }
.cta-note { color: var(--tx2); font-size: 13px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(232px, 1fr)); gap: 16px; margin-top: 46px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 22px; transition: transform .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-3px); border-color: rgba(91, 140, 255, .45); }
.card .ic {
  width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(91, 140, 255, .28), rgba(40, 214, 166, .2));
  font-size: 19px; margin-bottom: 13px;
}
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--tx2); font-size: 14px; }
section { padding: 56px 0; }
.sec-title { text-align: center; margin-bottom: 34px; }
.sec-title h2 { font-size: clamp(23px, 3.4vw, 34px); margin: 0 0 10px; letter-spacing: -.3px; }
.sec-title p { color: var(--tx2); margin: 0; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 18px; }
.steps { counter-reset: s; display: grid; gap: 14px; }
.step { display: flex; gap: 16px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; }
.step::before {
  counter-increment: s; content: counter(s);
  flex: 0 0 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--acc), var(--acc2)); color: #fff; font-weight: 700;
}
.step h4 { margin: 0 0 5px; font-size: 16px; }
.step p { margin: 0; color: var(--tx2); font-size: 14px; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
table.tbl th, table.tbl td { padding: 11px 12px; border-bottom: 1px solid var(--line); text-align: left; }
table.tbl th { color: var(--tx2); font-weight: 600; font-size: 13px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.note { color: var(--tx2); font-size: 13px; }
footer.site { border-top: 1px solid var(--line); padding: 30px 0; color: var(--tx2); font-size: 13px; }
footer.site .wrap { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; }

/* ---- 查询页 ---- */
.form-card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 30px; margin-top: 30px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 7px; }
.field .hint { font-weight: 400; color: var(--tx2); font-size: 12.5px; margin-left: 6px; }
input[type=text], input[type=url], input[type=search] {
  width: 100%; padding: 13px 15px; border-radius: 12px;
  border: 1px solid var(--line); background: rgba(0, 0, 0, .26); color: var(--tx); font-size: 15px;
  font-family: inherit; outline: none; transition: border-color .15s, box-shadow .15s;
}
input:focus { border-color: var(--acc); box-shadow: 0 0 0 3px rgba(91, 140, 255, .16); }
.row2 { display: grid; grid-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .row2 { grid-template-columns: 1fr; } }
.examples { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 9px; }
.examples button {
  background: rgba(255, 255, 255, .05); border: 1px solid var(--line); color: var(--tx2);
  border-radius: 999px; padding: 5px 12px; font-size: 12.5px; cursor: pointer; font-family: inherit;
}
.examples button:hover { color: var(--tx); border-color: var(--acc); }
.alert { border-radius: 12px; padding: 13px 15px; font-size: 14px; margin: 16px 0; display: none; }
.alert.err { display: block; background: rgba(255, 107, 107, .12); border: 1px solid rgba(255, 107, 107, .4); color: #ffc4c4; }
.alert.ok { display: block; background: rgba(40, 214, 166, .12); border: 1px solid rgba(40, 214, 166, .4); color: #a5f0d8; }
.spinner {
  width: 17px; height: 17px; border-radius: 50%; display: inline-block; vertical-align: -3px;
  border: 2px solid rgba(255, 255, 255, .28); border-top-color: #fff; animation: sp .8s linear infinite;
}
@keyframes sp { to { transform: rotate(360deg); } }

/* ---- 报告页 ---- */
.score-hero { display: grid; grid-template-columns: 220px 1fr; gap: 30px; align-items: center; margin: 26px 0; }
@media (max-width: 700px) { .score-hero { grid-template-columns: 1fr; } }
.ring { position: relative; width: 190px; height: 190px; }
.ring svg { transform: rotate(-90deg); }
.ring .val { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; }
.ring .val b { font-size: 46px; line-height: 1; display: block; }
.ring .val span { color: var(--tx2); font-size: 12.5px; }
.kpis { display: grid; grid-columns: repeat(auto-fit, minmax(158px, 1fr)); gap: 14px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.kpi .k { color: var(--tx2); font-size: 13px; margin-bottom: 7px; }
.kpi .v { font-size: 27px; font-weight: 700; line-height: 1.1; }
.kpi .v small { font-size: 14px; font-weight: 500; color: var(--tx2); margin-left: 3px; }
.kpi .d { font-size: 12.5px; margin-top: 5px; }
.up { color: var(--acc2); } .down { color: var(--err); } .flat { color: var(--tx2); }
.pill { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; border: 1px solid var(--line); color: var(--tx2); }
.pill.ok { color: var(--acc2); border-color: rgba(40, 214, 166, .45); }
.pill.warn { color: var(--warn); border-color: rgba(255, 181, 71, .45); }
.pill.err { color: var(--err); border-color: rgba(255, 107, 107, .45); }
details.qa { background: rgba(0, 0, 0, .22); border: 1px solid var(--line); border-radius: 13px; padding: 15px 17px; margin-bottom: 11px; }
details.qa summary { cursor: pointer; font-weight: 600; font-size: 15px; list-style: none; }
details.qa summary::-webkit-details-marker { display: none; }
details.qa .q { color: var(--tx2); font-size: 13.5px; margin: 11px 0 7px; }
details.qa .a { font-size: 14px; white-space: pre-wrap; color: #dbe3f7; }
.issue { display: flex; gap: 11px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.issue:last-child { border-bottom: 0; }
.issue .lv { flex: 0 0 auto; }
.issue .txt b { display: block; font-size: 14.5px; margin-bottom: 3px; }
.issue .txt p { margin: 0; color: var(--tx2); font-size: 13.5px; }
.bar { height: 7px; border-radius: 4px; background: rgba(255, 255, 255, .1); overflow: hidden; margin-top: 7px; }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--acc), var(--acc2)); }
.dimrow { display: flex; align-items: center; gap: 13px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.dimrow .nm { flex: 0 0 108px; font-size: 14px; }
.dimrow .bar { flex: 1; margin: 0; }
.dimrow .sc { flex: 0 0 48px; text-align: right; font-weight: 700; font-size: 15px; }