/* ==========================================================================
   OCS 题库 · 前台
   ========================================================================== */

.site main { padding: 32px 0 0; }

/* ------------------------------ Hero ------------------------------ */

.hero {
  position: relative;
  padding: 34px 0 26px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -160px -10% auto -10%;
  height: 320px;
  background:
    radial-gradient(520px 220px at 18% 40%, color-mix(in srgb, var(--accent) 20%, transparent), transparent 70%),
    radial-gradient(460px 200px at 78% 20%, color-mix(in srgb, var(--teal) 18%, transparent), transparent 70%);
  filter: blur(6px);
  z-index: -1;
  pointer-events: none;
}
.hero h1 {
  font-size: clamp(26px, 4.2vw, 36px);
  line-height: 1.25;
  letter-spacing: -.025em;
}
.hero .sub {
  margin: 10px 0 0;
  color: var(--text-soft);
  font-size: 14.5px;
  max-width: 640px;
}

.chips {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 22px;
}
.chip {
  min-width: 108px;
  padding: 11px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}
.chip b {
  display: block;
  font-size: 19px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}
.chip span { font-size: 12px; color: var(--muted); }

/* ------------------------------ 查询区 ------------------------------ */

.search-card { margin-top: 6px; }
.search-card .field > span { font-size: 12.6px; letter-spacing: .02em; }
.search-card textarea#q {
  font-size: 15px;
  min-height: 74px;
}
.search-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.search-actions .btn.primary { padding: 10px 22px; }
.search-actions .hint { margin: 0; }

details.more {
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin: 4px 0 14px;
  background: var(--surface-2);
}
details.more summary {
  cursor: pointer;
  font-size: 13px;
  color: var(--text-soft);
  list-style: none;
}
details.more summary::-webkit-details-marker { display: none; }
details.more summary::before {
  content: "＋";
  color: var(--muted);
  margin-right: 7px;
  font-size: 12px;
}
details.more[open] summary::before { content: "－"; }
details.more[open] summary { margin-bottom: 12px; }

/* ------------------------------ 结果 ------------------------------ */

#result { margin-top: 18px; }
#result:empty { display: none; }

.res { animation: rise .22s ease both; }
@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.res-head {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.res .answer {
  font-size: 30px;
  font-weight: 650;
  letter-spacing: .01em;
  color: var(--accent);
  line-height: 1.3;
  word-break: break-word;
}
.res.hit .answer { color: var(--ok); }
.res .qtext {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
  font-size: 13.6px;
  color: var(--text-soft);
  white-space: pre-wrap;
  word-break: break-word;
}
.res.miss .answer { font-size: 16px; color: var(--text); }
.res .btn-row { margin-top: 14px; }
.res .btn-row .hint { margin: 0; }

ul.opts {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 7px;
}
ul.opts li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-size: 13.6px;
  color: var(--text-soft);
  background: var(--surface-2);
}
ul.opts li .k {
  flex: none;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: var(--bg-soft);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--muted);
}
ul.opts li.ok {
  border-color: color-mix(in srgb, var(--ok) 45%, transparent);
  background: var(--ok-bg);
  color: var(--ok);
}
ul.opts li.ok .k { background: var(--ok); color: var(--surface); }

.res.loading { color: var(--muted); font-size: 13.8px; }
.res.loading::after {
  content: "";
  display: inline-block;
  width: 12px; height: 12px;
  margin-left: 8px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ------------------------------ 接入指引 ------------------------------ */

.guide h2 { margin-bottom: 12px; }
.guide p { font-size: 13.8px; color: var(--text-soft); }
.guide .copyline { margin: 8px 0 14px; }
.guide ol.steps {
  margin: 10px 0 0;
  padding-left: 20px;
  font-size: 13.6px;
  color: var(--text-soft);
}
.guide ol.steps li { margin-bottom: 6px; }
.guide ol.steps li::marker { color: var(--accent); font-weight: 600; }

/* ------------------------------ 账号页 ------------------------------ */

.hero-account {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}
.hero-account h1 { font-size: 26px; }
.quota-big {
  text-align: right;
  min-width: 150px;
}
.quota-big b {
  display: block;
  font-size: 34px;
  font-weight: 650;
  line-height: 1.1;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.quota-big span { font-size: 12.4px; color: var(--muted); }
.quota-big.is-zero b { color: var(--bad); }

.kv {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 8px 14px;
  font-size: 13.6px;
}
.kv dt { color: var(--muted); }
.kv dd { margin: 0; word-break: break-all; }

/* ------------------------------ 登录 / 注册 ------------------------------ */

.auth-wrap {
  max-width: 420px;
  margin: 40px auto 0;
}
.auth-wrap .card { padding: 26px; }
.auth-wrap h1 { font-size: 20px; margin-bottom: 4px; }
.auth-wrap .hint { margin-bottom: 18px; }
.auth-foot {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  margin-top: 16px;
}

/* ------------------------------ 安装页 ------------------------------ */

.setup-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}
.setup-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.6px;
  padding: 10px 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.setup-item .ok { color: var(--ok); }
.setup-item .no { color: var(--bad); }