:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #151922;
  --muted: #657084;
  --line: #dfe4ea;
  --primary: #0f8b6f;
  --primary-dark: #076451;
  --danger: #c0392b;
  --ok: #12805c;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Microsoft YaHei", Tahoma, Arial, sans-serif;
}
a { color: var(--primary-dark); text-decoration: none; }
.topbar {
  min-height: 58px;
  padding: 10px 28px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand { color: var(--text); font-weight: 800; }
.topbar-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  min-width: 0;
}
nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 14px 18px; font-size: 14px; }
.language-select {
  display: inline-flex;
  grid-template-columns: none;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}
.language-select select {
  width: auto;
  min-height: 34px;
  padding: 6px 30px 6px 10px;
  border-radius: 6px;
  font-size: 13px;
  background: #fff;
}
[dir="rtl"] .language-select select { padding: 6px 10px 6px 30px; }
.container { max-width: 1180px; margin: 0 auto; padding: 28px; }
.hero, .panel, .auth-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
}
.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}
.hero h1, .panel h1, .auth-panel h1 { margin: 6px 0 10px; }
.hero p { margin: 0; color: var(--muted); max-width: 760px; line-height: 1.7; }
.eyebrow { color: var(--primary-dark); font-size: 13px; font-weight: 700; }
.stats-grid, .info-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0;
}
.stats-grid div, .info-grid div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}
.stats-grid strong { display: block; font-size: 28px; }
.stats-grid span, .info-grid span { color: var(--muted); font-size: 13px; }
.info-grid strong { display: block; margin-top: 6px; word-break: break-all; }
.panel { margin-top: 18px; }
.narrow, .auth-panel { max-width: 760px; margin: 30px auto; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-bottom: 14px; }
.panel-head h1, .panel-head h2 { margin: 0; }
.form-stack, .form-grid { display: grid; gap: 14px; }
.form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
label { display: grid; gap: 6px; color: var(--muted); font-size: 14px; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 11px 12px;
  font: inherit;
  color: var(--text);
  background: #fff;
}
textarea { resize: vertical; min-height: 110px; }
.wide { grid-column: 1 / -1; }
.check { grid-template-columns: 18px 1fr; align-items: center; }
.check input { width: auto; }
button, .primary, .ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border-radius: 6px;
  padding: 0 16px;
  border: 1px solid transparent;
  font: inherit;
  cursor: pointer;
}
.primary, button.primary {
  background: var(--primary);
  color: #fff;
}
.primary:hover { background: var(--primary-dark); color: #fff; }
.large { min-height: 44px; padding: 0 20px; white-space: nowrap; }
.ghost {
  border-color: var(--line);
  color: var(--text);
  background: #fff;
}
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; border-bottom: 1px solid var(--line); padding: 12px 10px; vertical-align: top; }
th { color: var(--muted); font-weight: 700; }
.empty { color: var(--muted); text-align: center; padding: 28px; }
.badge {
  display: inline-flex;
  border-radius: 999px;
  padding: 3px 9px;
  background: #eef2f6;
  color: #425066;
  font-size: 12px;
  font-weight: 700;
}
.badge.ok { background: #e7f6ef; color: var(--ok); }
.badge.danger { background: #fdebea; color: var(--danger); }
.notice {
  margin-bottom: 14px;
  border-radius: 8px;
  padding: 12px 14px;
  border: 1px solid var(--line);
}
.notice.ok { color: var(--ok); background: #eefaf4; border-color: #c8eadb; }
.notice.error { color: var(--danger); background: #fff0ef; border-color: #f0cbc8; }
.muted { color: var(--muted); line-height: 1.7; }

.site-hero {
  min-height: 520px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: 42px;
  align-items: center;
  padding: 42px 0 34px;
}
.hero-copy h1 {
  margin: 10px 0 16px;
  max-width: 760px;
  font-size: 44px;
  line-height: 1.15;
}
.hero-copy p {
  margin: 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.compact-actions { margin-top: 0; justify-content: flex-end; }
.product-shot {
  border: 1px solid #cfd8e3;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 50px rgba(30, 42, 60, 0.12);
  overflow: hidden;
}
.shot-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  background: #f3f6fa;
}
.shot-head span, .score-meter small { color: var(--muted); }
.score-meter {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 24px 18px;
}
.score-meter > span {
  width: 86px;
  height: 86px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #e6f6f1;
  color: var(--primary-dark);
  font-size: 34px;
  font-weight: 800;
}
.score-meter strong { display: block; font-size: 24px; margin-bottom: 4px; }
.signal-list { display: grid; border-top: 1px solid var(--line); }
.signal-list div {
  display: grid;
  grid-template-columns: 70px 1fr 58px;
  gap: 10px;
  align-items: center;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
}
.signal-list div:last-child { border-bottom: 0; }
.signal-list span { color: var(--muted); }
.signal-list em {
  justify-self: end;
  font-style: normal;
  color: var(--ok);
  font-weight: 700;
}
.section-head {
  margin: 34px 0 16px;
  max-width: 860px;
}
.section-head h1, .section-head h2 { margin: 8px 0 10px; }
.section-head p { margin: 0; color: var(--muted); line-height: 1.7; }
.feature-grid, .pricing-grid, .usage-grid, .score-guide-grid, .guide-grid {
  display: grid;
  gap: 16px;
}
.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.feature-grid > div, .price-card, .score-guide-grid > div, .guide-grid > div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}
.feature-grid strong { display: block; font-size: 16px; margin-bottom: 8px; }
.feature-grid p, .price-card p, .score-guide-grid p, .guide-grid p { margin: 0; color: var(--muted); line-height: 1.7; }
.score-guide-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.score-guide-grid strong {
  display: block;
  font-size: 30px;
  margin-bottom: 6px;
}
.score-guide-grid span {
  display: block;
  color: var(--primary-dark);
  font-weight: 700;
  margin-bottom: 10px;
}
.guide-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.guide-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.guide-grid strong {
  display: block;
  margin-bottom: 8px;
}
.timeline {
  display: grid;
  gap: 12px;
}
.timeline div {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.timeline div:last-child { border-bottom: 0; }
.timeline strong { display: block; }
.timeline p { margin: 0; color: var(--muted); line-height: 1.7; }
.score-note-list {
  display: grid;
  gap: 10px;
  margin: 16px 0;
}
.score-note-list div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
}
.score-note-list strong { color: var(--primary-dark); }
.score-note-list span { color: var(--muted); line-height: 1.6; }
.score-table-wrap { overflow-x: auto; margin-top: 14px; }
.pricing-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.pricing-grid.compact { margin-bottom: 28px; }
.price-card {
  display: grid;
  align-content: start;
  gap: 14px;
  position: relative;
}
.price-card.featured {
  border-color: #88d0bd;
  box-shadow: 0 14px 36px rgba(15, 139, 111, 0.12);
}
.price-top {
  min-height: 92px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}
.price-top h2, .price-card h3 { margin: 0 0 8px; }
.price {
  display: block;
  font-size: 28px;
}
.quota-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.quota-list div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #f8fafc;
}
.quota-list span { display: block; color: var(--muted); font-size: 13px; }
.quota-list strong { display: block; margin-top: 6px; }
.feature-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}
.wide-btn { width: 100%; }
.usage-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 18px 0; }
.usage-grid > div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: #f8fafc;
}
.usage-line { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.usage-line span { color: var(--muted); }
.progress {
  height: 10px;
  border-radius: 999px;
  background: #dfe6ee;
  overflow: hidden;
}
.progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary), #2a6fdb);
}
.share-box {
  display: grid;
  gap: 8px;
  margin: 18px 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
}
.share-box span {
  color: var(--muted);
  font-size: 13px;
}
.share-box strong {
  display: block;
  word-break: break-all;
  font-size: 18px;
}
.inline-form {
  display: grid;
  grid-template-columns: 100px 90px auto;
  gap: 8px;
  align-items: center;
  min-width: 280px;
}
.inline-form input, .inline-form select { min-height: 38px; }
.compact-inline {
  grid-template-columns: 120px auto;
  min-width: 190px;
}

@media (max-width: 760px) {
  .topbar { height: auto; padding: 14px; align-items: flex-start; gap: 12px; }
  .topbar-right { display: grid; justify-items: start; gap: 12px; }
  nav { justify-content: flex-start; gap: 10px; }
  .language-select { width: 100%; }
  .container { padding: 16px; }
  .hero, .panel-head { display: grid; }
  .site-hero, .feature-grid, .pricing-grid, .usage-grid, .score-guide-grid, .guide-grid, .guide-grid.three, .stats-grid, .info-grid, .form-grid { grid-template-columns: 1fr; }
  .site-hero { min-height: auto; padding-top: 18px; }
  .hero-copy h1 { font-size: 32px; }
  .compact-actions { justify-content: flex-start; }
  .shot-head, .score-meter { display: grid; }
  .signal-list div { grid-template-columns: 1fr; }
  .signal-list em { justify-self: start; }
  .timeline div, .score-note-list div { grid-template-columns: 1fr; }
  .inline-form { grid-template-columns: 1fr; }
}