/* NIO Inspired Minimalist Luxury Style: Clean White, Architectural Lines, Pure Light */
:root {
  --nio-bg: #f7f9fa;
  --nio-surface: #ffffff;
  --nio-surface-subtle: #f1f4f6;
  --nio-border: #e5e9ec;
  --nio-border-light: #edf1f3;

  --nio-blue: #0076a8;
  --nio-sky: #0098db;
  --nio-black: #0f1419;
  --nio-gray-dark: #2c343e;
  --nio-gray-medium: #576472;
  --nio-gray-light: #8b99a7;
  --nio-gray-ultralight: #eef2f5;

  --nio-gold: #c29b62;
  --nio-emerald: #0e8656;

  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-float: 0 8px 30px rgba(0, 0, 0, 0.06);
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.03);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--nio-bg);
  color: var(--nio-gray-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.2px;
}

a {
  color: var(--nio-blue);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--nio-sky);
}

.container {
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 28px;
}

/* Header */
.nio-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--nio-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nio-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}

.nio-logo-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nio-brand-badge {
  background: var(--nio-black);
  color: #fff;
  font-size: 15px;
  font-weight: 900;
  padding: 5px 12px;
  border-radius: var(--radius-xs);
  letter-spacing: 1px;
}

.nio-title-wrap h1 {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--nio-black);
  line-height: 1.15;
}

.nio-title-wrap p {
  font-size: 11px;
  color: var(--nio-gray-medium);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.8px;
}

.nio-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nio-nav-btn {
  background: transparent;
  color: var(--nio-gray-medium);
  border: none;
  padding: 8px 16px;
  border-radius: 99px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.nio-nav-btn:hover, .nio-nav-btn.active {
  background: var(--nio-surface-subtle);
  color: var(--nio-black);
}

/* Hero Banner */
.nio-hero {
  padding: 56px 0 42px;
  background: var(--nio-surface);
  border-bottom: 1px solid var(--nio-border);
}

.nio-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--nio-surface-subtle);
  border: 1px solid var(--nio-border);
  color: var(--nio-gray-dark);
  font-size: 11.5px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 99px;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nio-hero h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--nio-black);
  margin-bottom: 14px;
  line-height: 1.25;
  letter-spacing: -0.8px;
}

.nio-hero p {
  font-size: 16px;
  color: var(--nio-gray-medium);
  max-width: 860px;
  line-height: 1.7;
}

.nio-stats-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 36px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--nio-border-light);
}

.nio-stat-item {
  display: flex;
  flex-direction: column;
}

.nio-stat-num {
  font-size: 26px;
  font-weight: 800;
  color: var(--nio-black);
  letter-spacing: -0.5px;
}

.nio-stat-label {
  font-size: 12px;
  color: var(--nio-gray-light);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* Filter Bar */
.nio-filter-bar {
  padding: 16px 0;
  background: var(--nio-surface);
  border-bottom: 1px solid var(--nio-border);
}

.nio-cat-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.nio-cat-pill {
  background: var(--nio-surface);
  border: 1px solid var(--nio-border);
  color: var(--nio-gray-medium);
  padding: 8px 20px;
  border-radius: 99px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nio-cat-pill:hover {
  background: var(--nio-surface-subtle);
  color: var(--nio-black);
}

.nio-cat-pill.active {
  background: var(--nio-black);
  color: #fff;
  border-color: var(--nio-black);
}

/* Matrix Table */
.nio-matrix-card {
  background: var(--nio-surface);
  border: 1px solid var(--nio-border);
  border-radius: var(--radius-md);
  margin: 36px 0;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.nio-matrix-header {
  padding: 18px 24px;
  background: var(--nio-surface);
  border-bottom: 1px solid var(--nio-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nio-matrix-header h3 {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--nio-black);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nio-table-scroll {
  overflow-x: auto;
}

.nio-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  text-align: left;
}

.nio-table th {
  background: var(--nio-surface-subtle);
  color: var(--nio-gray-medium);
  padding: 14px 20px;
  border-bottom: 1px solid var(--nio-border);
  font-size: 12px;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.nio-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--nio-border-light);
  vertical-align: middle;
}

.nio-table tr:hover td {
  background: var(--nio-surface-subtle);
}

.nio-rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-xs);
  background: var(--nio-gray-ultralight);
  font-weight: 800;
  font-size: 13px;
  color: var(--nio-black);
}

.nio-rank-badge.top-1 {
  background: var(--nio-black);
  color: #fff;
}

.nio-score-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 800;
  color: var(--nio-black);
  font-size: 14px;
}

.nio-btn-amazon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--nio-surface);
  color: var(--nio-black) !important;
  border: 1px solid var(--nio-border);
  padding: 7px 16px;
  border-radius: 99px;
  font-weight: 600;
  font-size: 12.5px;
  white-space: nowrap;
  transition: all 0.2s;
}

.nio-btn-amazon:hover {
  background: var(--nio-black);
  color: #fff !important;
  border-color: var(--nio-black);
}

/* Review Cards */
.nio-reviews-container {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-bottom: 56px;
}

.nio-card {
  background: var(--nio-surface);
  border: 1px solid var(--nio-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
}

.nio-card:hover {
  box-shadow: var(--shadow-float);
  border-color: #cbd5e1;
}

.nio-card.featured-pick {
  border: 1.5px solid var(--nio-black);
}

.nio-card-header {
  padding: 18px 26px;
  background: var(--nio-surface);
  border-bottom: 1px solid var(--nio-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.nio-card.featured-pick .nio-card-header {
  background: #fafbfc;
}

.nio-card-title-line {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nio-model-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--nio-black);
  letter-spacing: -0.3px;
}

.nio-award-badge {
  background: var(--nio-surface-subtle);
  border: 1px solid var(--nio-border);
  color: var(--nio-gray-dark);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.nio-card-price-score {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nio-card-score {
  font-size: 17px;
  font-weight: 800;
  color: var(--nio-black);
}

.nio-card-price {
  font-size: 15px;
  font-weight: 700;
  color: var(--nio-gray-dark);
}

.nio-card-body {
  padding: 26px;
}

.nio-layout-grid {
  display: grid;
  grid-template-columns: 220px 1fr 210px;
  gap: 26px;
  align-items: start;
}

.nio-visual-container {
  background: var(--nio-surface-subtle);
  border-radius: var(--radius-sm);
  padding: 22px 16px;
  text-align: center;
  border: 1px solid var(--nio-border-light);
}

.nio-svg-bench {
  width: 76px;
  height: 76px;
  margin-bottom: 12px;
}

.nio-spec-label {
  font-size: 11px;
  color: var(--nio-black);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Benchmark Bar Stack */
.nio-bench-stack {
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.nio-bench-row {
  display: grid;
  grid-template-columns: 160px 1fr 50px;
  align-items: center;
  gap: 12px;
  font-size: 12.5px;
}

.nio-bench-name {
  color: var(--nio-gray-dark);
  font-weight: 600;
}

.nio-bar-track {
  height: 6px;
  background: var(--nio-gray-ultralight);
  border-radius: 99px;
  overflow: hidden;
}

.nio-bar-fill {
  height: 100%;
  background: var(--nio-gray-medium);
  border-radius: 99px;
}

.nio-card.featured-pick .nio-bar-fill {
  background: var(--nio-black);
}

.nio-bench-val {
  color: var(--nio-black);
  font-weight: 700;
  text-align: right;
  font-feature-settings: "tnum";
}

/* CTA Column */
.nio-card-cta-box {
  background: var(--nio-surface-subtle);
  border: 1px solid var(--nio-border);
  border-radius: var(--radius-sm);
  padding: 18px;
  text-align: center;
}

.nio-big-score {
  font-size: 36px;
  font-weight: 800;
  color: var(--nio-black);
  line-height: 1;
  letter-spacing: -1px;
}

.nio-score-label {
  font-size: 10.5px;
  color: var(--nio-gray-light);
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.nio-btn-primary {
  display: block;
  background: var(--nio-black);
  color: #fff !important;
  font-weight: 700;
  font-size: 13px;
  padding: 11px 16px;
  border-radius: 99px;
  margin-bottom: 8px;
  transition: all 0.2s;
}

.nio-btn-primary:hover {
  background: var(--nio-gray-dark);
}

.nio-btn-outline {
  display: block;
  background: transparent;
  color: var(--nio-gray-dark);
  border: 1px solid var(--nio-border);
  font-size: 12px;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 99px;
  cursor: pointer;
  transition: all 0.2s;
}

.nio-btn-outline:hover {
  background: var(--nio-surface);
  border-color: var(--nio-gray-dark);
}

.nio-test-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--nio-border-light);
}

.nio-pill-item {
  background: var(--nio-surface-subtle);
  border: 1px solid var(--nio-border-light);
  padding: 5px 12px;
  border-radius: 99px;
  font-size: 12px;
  color: var(--nio-gray-dark);
}

.nio-pill-item strong {
  color: var(--nio-black);
}

.nio-verdict-box {
  margin-top: 18px;
  background: var(--nio-surface-subtle);
  border-left: 2px solid var(--nio-black);
  padding: 14px 18px;
  font-size: 13.5px;
  color: var(--nio-gray-dark);
  line-height: 1.65;
}

.nio-verdict-box strong {
  color: var(--nio-black);
}

/* Modal */
.nio-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 20, 25, 0.45);
  backdrop-filter: blur(8px);
  z-index: 999;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.nio-modal.open {
  display: flex;
}

.nio-modal-box {
  background: var(--nio-surface);
  border: 1px solid var(--nio-border);
  border-radius: var(--radius-md);
  max-width: 820px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-float);
}

.nio-modal-header {
  padding: 18px 24px;
  background: var(--nio-surface);
  border-bottom: 1px solid var(--nio-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nio-modal-header h4 {
  font-size: 17px;
  color: var(--nio-black);
  font-weight: 700;
}

.nio-modal-close {
  background: transparent;
  border: 1px solid var(--nio-border);
  color: var(--nio-gray-dark);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  cursor: pointer;
}

.nio-modal-content {
  padding: 26px;
}

/* Footer */
.nio-footer {
  background: var(--nio-surface);
  border-top: 1px solid var(--nio-border);
  padding: 48px 0 32px;
  color: var(--nio-gray-medium);
  font-size: 12.5px;
}

.nio-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 32px;
}

.nio-footer-col h5 {
  color: var(--nio-black);
  font-size: 13.5px;
  margin-bottom: 14px;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.nio-footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nio-footer-col a {
  color: var(--nio-gray-medium);
}

.nio-footer-col a:hover {
  color: var(--nio-black);
}

@media (max-width: 960px) {
  .nio-layout-grid {
    grid-template-columns: 1fr;
  }
}