:root {
  color-scheme: dark;
  --bg: #060b14;
  --bg-soft: #0c1525;
  --panel: rgba(10, 20, 36, 0.82);
  --panel-strong: rgba(11, 22, 40, 0.96);
  --border: rgba(122, 168, 255, 0.18);
  --text: #eef4ff;
  --muted: #98aacf;
  --primary: #64a9ff;
  --primary-strong: #84c3ff;
  --accent: #66ffd5;
  --warning: #ffca68;
  --danger: #ff738b;
  --success: #71f7c1;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --max-width: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(100, 169, 255, 0.18), transparent 30%),
    radial-gradient(circle at top right, rgba(102, 255, 213, 0.16), transparent 24%),
    linear-gradient(180deg, #050914 0%, #07101c 36%, #060b14 100%);
}

body.is-locked {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

img {
  display: block;
  width: 100%;
}

.container {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(20px);
  background: rgba(5, 10, 18, 0.76);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: #03101b;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 12px 28px rgba(100, 169, 255, 0.28);
}

.nav-shell {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  cursor: pointer;
}

.nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav a {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  transition: background 0.2s ease, color 0.2s ease;
}

.nav a:hover,
.nav a.is-active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  padding: 4px;
  gap: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.language-link {
  padding: 9px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  transition: background 0.2s ease, color 0.2s ease;
}

.language-link:hover,
.language-link.is-active {
  color: var(--text);
  background: rgba(100, 169, 255, 0.14);
}

.button,
button {
  border: 0;
  cursor: pointer;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, opacity 0.2s ease, box-shadow 0.2s ease;
}

.button:hover,
button:hover {
  transform: translateY(-1px);
}

.button-primary {
  padding: 14px 22px;
  color: #04111d;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 14px 30px rgba(100, 169, 255, 0.24);
}

.button-secondary {
  padding: 13px 20px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.button-ghost {
  padding: 13px 18px;
  color: var(--muted);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.page-hero,
.section {
  padding: 34px 0 52px;
}

.hero-layout,
.split-layout,
.dual-grid,
.triple-grid,
.pricing-grid,
.stats-grid,
.audit-layout,
.trace-layout {
  display: grid;
  gap: 22px;
}

.hero-layout {
  grid-template-columns: 1.12fr 0.88fr;
  align-items: stretch;
  padding-top: 42px;
}

.stats-grid {
  grid-template-columns: repeat(4, 1fr);
}

.split-layout {
  grid-template-columns: 1fr 1fr;
}

.dual-grid {
  grid-template-columns: repeat(2, 1fr);
}

.triple-grid,
.pricing-grid {
  grid-template-columns: repeat(3, 1fr);
}

.audit-layout {
  grid-template-columns: 0.92fr 1.08fr;
  align-items: start;
}

.trace-layout {
  grid-template-columns: 0.92fr 1.08fr;
  align-items: start;
}

.panel,
.hero-card,
.glass-card,
.metric-card,
.chart-card,
.form-panel,
.cta-panel,
.faq-item,
.risk-card,
.timeline-card,
.detail-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-copy,
.hero-card,
.glass-card,
.form-panel,
.chart-card,
.cta-panel {
  padding: 30px;
}

.hero-copy {
  position: relative;
  overflow: hidden;
}

.hero-copy::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(100, 169, 255, 0.12), transparent 36%, rgba(102, 255, 213, 0.08));
  pointer-events: none;
}

.eyebrow,
.card-tag,
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.eyebrow {
  color: var(--primary-strong);
  background: rgba(100, 169, 255, 0.1);
  border: 1px solid rgba(100, 169, 255, 0.18);
}

.card-tag {
  margin-bottom: 18px;
  color: var(--accent);
  background: rgba(102, 255, 213, 0.08);
  border: 1px solid rgba(102, 255, 213, 0.14);
}

.pill {
  color: var(--warning);
  background: rgba(255, 202, 104, 0.08);
  border: 1px solid rgba(255, 202, 104, 0.16);
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1.04;
  letter-spacing: -0.03em;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.16;
}

h3 {
  margin-bottom: 12px;
  font-size: 24px;
  line-height: 1.2;
}

p {
  color: var(--muted);
  line-height: 1.8;
}

.hero-actions,
.section-actions,
.button-row,
.filter-row,
.toggle-row,
.nav-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.hero-highlights,
.list,
.feature-list,
.timeline-list,
.feed-list,
.check-list {
  display: grid;
  gap: 14px;
}

.list-item,
.feature-item,
.timeline-item,
.feed-item,
.check-item,
.metric-card,
.risk-card,
.faq-item {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.visual-card {
  position: relative;
  min-height: 100%;
  overflow: hidden;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.visual-card img {
  height: 100%;
  min-height: 300px;
  object-fit: cover;
}

.visual-badge {
  position: absolute;
  left: 18px;
  bottom: 18px;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(5, 10, 18, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text);
  font-size: 13px;
}

.metric-card strong,
.stat-number,
.result-number,
.price {
  display: block;
  color: var(--text);
  font-size: 30px;
  margin-bottom: 8px;
}

.metric-card span,
.muted,
.mini {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
  margin-bottom: 22px;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tab-button,
.filter-chip,
.accordion-trigger {
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
}

.tab-button,
.filter-chip {
  padding: 11px 16px;
  border-radius: 999px;
  font-weight: 700;
}

.tab-button.is-active,
.filter-chip.is-active {
  color: var(--text);
  border-color: rgba(100, 169, 255, 0.26);
  background: rgba(100, 169, 255, 0.12);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.form-panel {
  background: var(--panel-strong);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field.full {
  grid-column: 1 / -1;
}

label {
  font-size: 14px;
  color: #dbe6ff;
}

input,
select,
textarea,
.range-output {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(100, 169, 255, 0.66);
  box-shadow: 0 0 0 4px rgba(100, 169, 255, 0.12);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.result-card {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.result-card .label {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 13px;
}

.severity-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.severity-row {
  display: grid;
  grid-template-columns: 120px 1fr 42px;
  gap: 12px;
  align-items: center;
}

.bar {
  height: 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.bar > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.task-log,
.risk-feed,
.detail-list {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.task-log .feed-item,
.risk-feed .feed-item,
.detail-list .feed-item {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.feed-item strong {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
}

.status-badge,
.risk-badge {
  display: inline-flex;
  align-items: center;
  height: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.status-badge {
  color: var(--primary-strong);
  background: rgba(100, 169, 255, 0.12);
}

.risk-badge.high {
  color: #ffcad4;
  background: rgba(255, 115, 139, 0.16);
}

.risk-badge.medium {
  color: #ffe0a0;
  background: rgba(255, 202, 104, 0.14);
}

.risk-badge.low {
  color: #bcffe3;
  background: rgba(102, 255, 213, 0.14);
}

.risk-card[data-hidden="true"] {
  display: none;
}

.risk-card.is-active {
  border-color: rgba(100, 169, 255, 0.34);
  background: rgba(100, 169, 255, 0.08);
}

.address-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.address-code {
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 13px;
  color: #dbe6ff;
}

.mini-chart {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.mini-line {
  display: grid;
  grid-template-columns: 90px 1fr 54px;
  gap: 12px;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
}

.pricing-switch {
  display: inline-flex;
  padding: 6px;
  gap: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.pricing-switch button {
  padding: 11px 16px;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
}

.pricing-switch button.is-active {
  color: var(--text);
  background: rgba(100, 169, 255, 0.14);
}

.price small {
  font-size: 14px;
  color: var(--muted);
}

.price-card {
  position: relative;
  padding: 28px;
  border-radius: var(--radius-xl);
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.price-card.is-featured {
  outline: 1px solid rgba(102, 255, 213, 0.32);
}

.price-list {
  display: grid;
  gap: 12px;
  margin: 20px 0 24px;
}

.price-list div::before,
.check-item::before {
  content: "•";
  color: var(--accent);
  margin-right: 8px;
}

.calculator-card {
  padding: 28px;
  border-radius: var(--radius-xl);
  background: var(--panel-strong);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.range-group {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.range-label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
  color: #dbe6ff;
}

input[type="range"] {
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.estimate-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.estimate-box {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-item {
  padding: 0;
  overflow: hidden;
}

.accordion-trigger {
  width: 100%;
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  border-radius: 0;
}

.accordion-body {
  display: none;
  padding: 0 20px 18px;
}

.faq-item.is-open .accordion-body {
  display: block;
}

.cta-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
}

.site-footer {
  padding: 18px 0 42px;
}

.footer-box {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  color: var(--muted);
  font-size: 14px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-meta,
.footer-entities,
.company-info-list {
  display: grid;
  gap: 10px;
}

.footer-entities {
  max-width: 720px;
}

.footer-entity-grid {
  width: 100%;
  grid-template-columns: repeat(2, minmax(260px, 1fr));
  gap: 14px;
}

.footer-entity-item {
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 16px 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
}

.footer-entity-title {
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
}

.footer-entity-address {
  line-height: 1.7;
}

.footer-entity-phone {
  color: #dbe6ff;
}

.footer-entities strong,
.company-info-item strong {
  color: var(--text);
}

.company-card h2 {
  margin-bottom: 10px;
}

.company-section-head {
  margin-bottom: 16px;
}

.legal-note {
  margin-bottom: 22px;
  padding: 16px 20px;
  border-radius: var(--radius-lg);
  color: #dbe6ff;
  background: rgba(100, 169, 255, 0.1);
  border: 1px solid rgba(100, 169, 255, 0.18);
  line-height: 1.8;
}

.legal-note strong {
  color: var(--text);
}

.company-info-item {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.company-info-item span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.7;
}

.modal,
.loading-overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(3, 8, 16, 0.78);
  backdrop-filter: blur(10px);
  z-index: 50;
}

.modal.is-visible,
.loading-overlay.is-visible {
  display: flex;
}

.modal-card,
.loading-card {
  width: min(100%, 520px);
  padding: 28px;
  border-radius: var(--radius-xl);
  background: rgba(9, 18, 33, 0.96);
  border: 1px solid rgba(100, 169, 255, 0.24);
  box-shadow: var(--shadow);
}

.modal-close {
  margin-left: auto;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.spinner {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.08);
  border-top-color: var(--accent);
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 1080px) {
  .hero-layout,
  .audit-layout,
  .trace-layout,
  .split-layout,
  .dual-grid,
  .triple-grid,
  .pricing-grid,
  .stats-grid,
  .estimate-grid,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .field-grid {
    grid-template-columns: 1fr;
  }

  .site-header .container,
  .footer-box,
  .cta-panel {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-entity-grid {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav-shell {
    position: relative;
    width: 100%;
    justify-content: space-between;
  }

  .nav {
    position: absolute;
    top: calc(100% + 14px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    border-radius: 20px;
    background: rgba(9, 18, 33, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav.is-open {
    display: flex;
  }
}

@media (max-width: 640px) {
  .hero-copy,
  .hero-card,
  .glass-card,
  .form-panel,
  .chart-card,
  .cta-panel,
  .calculator-card,
  .price-card {
    padding: 22px;
    border-radius: 22px;
  }

  .header-actions {
    display: grid;
    width: 100%;
  }

  .header-actions .button,
  .header-actions button,
  .button-row .button,
  .button-row a {
    width: 100%;
  }

  .severity-row,
  .mini-line {
    grid-template-columns: 1fr;
  }
}