/* 牛牛阅卷 全站样式 */
:root {
  --brand: #ff7a1a;
  --brand2: #ff4d4f;
  --grad: linear-gradient(135deg, #ff7a1a, #ff4d4f);
  --ink: #1f2329;
  --ink2: #51565d;
  --muted: #8a919f;
  --line: #eceef1;
  --bg: #f7f8fa;
  --card: #ffffff;
  --ok: #16a34a;
  --warn: #d97706;
  --bad: #dc2626;
  --blue: #2563eb;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(16, 24, 40, .06), 0 8px 24px -12px rgba(16, 24, 40, .12);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink); background: var(--bg); font-size: 15px; line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
img { max-width: 100%; }

/* ===== 顶部导航 ===== */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .88); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 20px; height: 60px;
  display: flex; align-items: center; gap: 28px;
}
.logo { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 800; }
.logo .mark {
  width: 32px; height: 32px; border-radius: 9px; background: var(--grad);
  display: grid; place-items: center; color: #fff; font-size: 17px;
}
.nav { display: flex; gap: 22px; font-size: 14.5px; color: var(--ink2); }
.nav a:hover { color: var(--brand); }
.nav .active { color: var(--ink); font-weight: 600; }
.topbar .spacer { flex: 1; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: none; cursor: pointer; border-radius: 10px; font-size: 14.5px; font-weight: 600;
  padding: 9px 18px; transition: .15s; white-space: nowrap;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 6px 16px -6px rgba(255, 90, 40, .55); }
.btn-primary:hover { filter: brightness(1.05); transform: translateY(-1px); }
.btn-ghost { background: #fff; border: 1px solid var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-danger { background: #fee2e2; color: var(--bad); }
.btn-sm { padding: 5px 12px; font-size: 13px; border-radius: 8px; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn-block { width: 100%; }

/* ===== 首页 ===== */
.banner-strip {
  background: linear-gradient(90deg, #fff7ef, #ffecec); color: #b45309;
  font-size: 13px; text-align: center; padding: 7px 16px;
}
.hero { max-width: 1120px; margin: 0 auto; padding: 72px 20px 48px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.hero h1 { font-size: 42px; line-height: 1.25; letter-spacing: -.5px; }
.hero h1 .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.sub { color: var(--ink2); font-size: 17px; margin: 16px 0 26px; max-width: 480px; }
.hero .cta { display: flex; gap: 12px; }
.hero .cta .btn { padding: 12px 26px; font-size: 15.5px; border-radius: 12px; }
.hero .meta { display: flex; gap: 22px; margin-top: 26px; color: var(--muted); font-size: 13px; }
.hero .meta b { color: var(--ink); font-size: 17px; display: block; }
.hero-visual {
  background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow);
  padding: 18px; transform: rotate(.4deg);
}
.hv-head { display: flex; gap: 6px; margin-bottom: 12px; }
.hv-head i { width: 10px; height: 10px; border-radius: 50%; background: #e5e7eb; }
.hv-head i:first-child { background: #ffb4a1; }
.hv-title { font-size: 13px; font-weight: 700; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.hv-row {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; margin-bottom: 8px; font-size: 13px;
}
.hv-row .bar { height: 6px; border-radius: 4px; background: #f0f1f4; flex: 1; overflow: hidden; margin: 0 10px; }
.hv-row .bar i { display: block; height: 100%; background: var(--grad); border-radius: 4px; }
.pill { padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.pill.ok { background: #dcfce7; color: var(--ok); }
.pill.run { background: #dbeafe; color: var(--blue); }
.pill.warn { background: #fef3c7; color: var(--warn); }
.pill.bad { background: #fee2e2; color: var(--bad); }
.pill.gray { background: #f1f2f4; color: var(--ink2); }

.section { max-width: 1120px; margin: 0 auto; padding: 64px 20px; }
.sec-head { text-align: center; margin-bottom: 40px; }
.sec-head h2 { font-size: 30px; letter-spacing: -.3px; }
.sec-head p { color: var(--muted); margin-top: 8px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; max-width: 860px; margin: 0 auto; }
.chip {
  background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 8px 18px;
  font-size: 14px; font-weight: 600; color: var(--ink2); box-shadow: 0 1px 2px rgba(0,0,0,.03);
}
.chip.hot { border-color: #ffc9a3; color: #c2410c; background: #fff7ef; }

.grid { display: grid; gap: 16px; }
.grid.cols3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols2 { grid-template-columns: repeat(2, 1fr); }
.feature {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: 0 1px 2px rgba(0,0,0,.03); transition: .15s;
}
.feature:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #ffd9bd; }
.feature .ico {
  width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center;
  background: #fff3e8; font-size: 19px; margin-bottom: 12px;
}
.feature h3 { font-size: 16px; margin-bottom: 6px; }
.feature p { font-size: 13.5px; color: var(--muted); }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: step; }
.step {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px; position: relative;
}
.step .num {
  width: 34px; height: 34px; border-radius: 50%; background: var(--grad); color: #fff;
  display: grid; place-items: center; font-weight: 800; font-size: 16px; margin-bottom: 14px;
}
.step h3 { font-size: 17px; margin-bottom: 8px; }
.step p { font-size: 13.5px; color: var(--muted); }

.price-wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; max-width: 900px; margin: 0 auto; }
.price-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 28px 24px;
  box-shadow: 0 1px 2px rgba(0,0,0,.03); text-align: center; position: relative;
}
.price-card.hot { border: 2px solid #ffb37a; box-shadow: 0 12px 32px -12px rgba(255,122,26,.35); }
.price-card .tag {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--grad); color: #fff; font-size: 12px; font-weight: 700;
  padding: 3px 14px; border-radius: 999px;
}
.price-card h3 { font-size: 16px; color: var(--ink2); }
.price-card .amount { font-size: 40px; font-weight: 800; margin: 10px 0 2px; }
.price-card .amount small { font-size: 15px; font-weight: 600; color: var(--muted); }
.price-card .origin { color: var(--muted); font-size: 13px; text-decoration: line-through; }
.price-card ul { list-style: none; margin: 18px 0 22px; text-align: left; }
.price-card li { padding: 7px 0; font-size: 14px; color: var(--ink2); border-bottom: 1px dashed var(--line); }
.price-card li:last-child { border: none; }
.price-card li::before { content: "✓"; color: var(--ok); font-weight: 700; margin-right: 8px; }

.faq { max-width: 760px; margin: 0 auto; }
.faq-item { background: var(--card); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 10px; overflow: hidden; }
.faq-item summary {
  padding: 16px 20px; cursor: pointer; font-weight: 600; font-size: 15px; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--brand); font-size: 20px; font-weight: 400; }
.faq-item[open] summary::after { content: "–"; }
.faq-item .faq-body { padding: 0 20px 16px; color: var(--ink2); font-size: 14px; }

.footer { border-top: 1px solid var(--line); background: #fff; margin-top: 40px; }
.footer-inner {
  max-width: 1120px; margin: 0 auto; padding: 36px 20px;
  display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap;
}
.footer .cols { display: flex; gap: 60px; flex-wrap: wrap; }
.footer h4 { font-size: 14px; margin-bottom: 10px; }
.footer a { display: block; color: var(--muted); font-size: 13.5px; padding: 3px 0; }
.footer a:hover { color: var(--brand); }
.footer .legal { color: var(--muted); font-size: 12.5px; }

/* ===== 认证页 ===== */
.auth-wrap { min-height: calc(100vh - 60px); display: grid; place-items: center; padding: 40px 16px; }
.auth-card {
  width: 100%; max-width: 420px; background: #fff; border: 1px solid var(--line);
  border-radius: 18px; padding: 34px 30px; box-shadow: var(--shadow);
}
.auth-card h1 { font-size: 22px; margin-bottom: 4px; }
.auth-card .sub { color: var(--muted); font-size: 13.5px; margin-bottom: 22px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
  font-size: 14.5px; font-family: inherit; background: #fafbfc; transition: .15s; color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand); background: #fff; box-shadow: 0 0 0 3px rgba(255, 122, 26, .12);
}
.field .hint { color: var(--muted); font-size: 12.5px; margin-top: 4px; }
.field-row { display: flex; gap: 10px; }
.code-btn { border: 1px solid var(--line); background: #fff7ef; color: #c2410c; border-radius: 10px; padding: 0 14px; font-size: 13.5px; font-weight: 600; cursor: pointer; white-space: nowrap; }
.code-btn:disabled { opacity: .5; cursor: not-allowed; }
.auth-switch { text-align: center; color: var(--muted); font-size: 13.5px; margin-top: 18px; }
.auth-switch a { color: var(--brand); font-weight: 600; }
.tabs { display: flex; gap: 6px; background: #f1f2f4; border-radius: 11px; padding: 4px; margin-bottom: 20px; }
.tabs button {
  flex: 1; border: none; background: transparent; padding: 8px; border-radius: 8px;
  font-size: 14px; font-weight: 600; color: var(--ink2); cursor: pointer;
}
.tabs button.on { background: #fff; color: var(--ink); box-shadow: 0 1px 4px rgba(0,0,0,.08); }

/* ===== 后台布局 ===== */
.shell { display: flex; min-height: calc(100vh - 60px); }
.side {
  width: 210px; background: #fff; border-right: 1px solid var(--line);
  padding: 18px 12px; flex-shrink: 0; position: sticky; top: 60px; height: calc(100vh - 60px); overflow-y: auto;
}
.side .group { font-size: 12px; color: var(--muted); padding: 14px 12px 6px; letter-spacing: .5px; }
.side a {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 9px;
  color: var(--ink2); font-size: 14px; font-weight: 500; margin-bottom: 2px;
}
.side a:hover { background: #fff3e8; color: #c2410c; }
.side a.on { background: var(--grad); color: #fff; font-weight: 600; }
.main { flex: 1; padding: 26px 30px; max-width: 1060px; min-width: 0; }
.page-title { font-size: 21px; font-weight: 800; margin-bottom: 4px; }
.page-sub { color: var(--muted); font-size: 13.5px; margin-bottom: 22px; }

.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 22px; }
.stat {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px;
}
.stat .label { font-size: 13px; color: var(--muted); }
.stat .val { font-size: 26px; font-weight: 800; margin-top: 4px; }
.stat .val small { font-size: 13px; font-weight: 500; color: var(--muted); }

.panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.panel-head { padding: 15px 18px; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 12px; }
.panel-head h3 { font-size: 15.5px; }
.panel-head .spacer { flex: 1; }
.panel-body { padding: 18px; }

table.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.tbl th {
  text-align: left; padding: 10px 14px; color: var(--muted); font-weight: 600; font-size: 12.5px;
  border-bottom: 1px solid var(--line); background: #fafbfc; white-space: nowrap;
}
.tbl td { padding: 11px 14px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.tbl tr:last-child td { border-bottom: none; }
.tbl tr:hover td { background: #fafbfc; }
.tbl .actions { display: flex; gap: 6px; flex-wrap: wrap; }
.empty { text-align: center; color: var(--muted); padding: 40px 0; font-size: 14px; }

.modal-mask {
  position: fixed; inset: 0; background: rgba(15, 23, 42, .45); z-index: 100;
  display: none; align-items: flex-start; justify-content: center; padding: 6vh 16px; overflow-y: auto;
}
.modal-mask.show { display: flex; }
.modal {
  background: #fff; border-radius: 16px; width: 100%; max-width: 560px;
  box-shadow: 0 24px 60px -12px rgba(0,0,0,.3); animation: pop .18s ease;
}
@keyframes pop { from { transform: translateY(10px) scale(.98); opacity: 0; } }
.modal-head { padding: 18px 22px 0; display: flex; align-items: center; }
.modal-head h3 { font-size: 17px; }
.modal-head .x { margin-left: auto; border: none; background: none; font-size: 22px; color: var(--muted); cursor: pointer; line-height: 1; }
.modal-body { padding: 18px 22px; }
.modal-foot { padding: 0 22px 20px; display: flex; gap: 10px; justify-content: flex-end; }

.toast {
  position: fixed; top: 74px; left: 50%; transform: translateX(-50%) translateY(-8px);
  background: #1f2329; color: #fff; padding: 10px 20px; border-radius: 10px; font-size: 14px;
  z-index: 200; opacity: 0; pointer-events: none; transition: .2s; max-width: 80vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.bad { background: var(--bad); }
.toast.good { background: var(--ok); }

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }
.muted { color: var(--muted); }
.mt8 { margin-top: 8px; } .mt16 { margin-top: 16px; } .mt24 { margin-top: 24px; }
.mb8 { margin-bottom: 8px; } .mb16 { margin-bottom: 16px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; }
.progress { height: 8px; background: #f0f1f4; border-radius: 5px; overflow: hidden; }
.progress i { display: block; height: 100%; background: var(--grad); border-radius: 5px; transition: width .4s; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 44px; }
  .grid.cols3, .steps, .price-wrap { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .nav { display: none; }
  .side { display: none; }
  .main { padding: 20px 16px; }
}