:root {
  --color-ink: #111111;
  --color-cream: #F5F0E6;
  --color-gray: #EAE5D9;
  --color-navy: #2C3E50;
  --color-green: #1F3B2C;
  --color-orange: #FF6B35;
  --color-purple: #9B59B6;
  --color-green-bright: #2ECC71;
  --color-amber: #F39C12;
  --color-blue: #3498DB;
  --color-text-gray: #3D4A5C;
  --color-border-gray: #D9D4C7;
  --font-head: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", Consolas, monospace;
  --container: 1440px;
  --header-h: 76px;
  --radius: 2px;
  --shadow-card: 0 1px 0 rgba(17, 17, 17, 0.08), 0 2px 6px rgba(17, 17, 17, 0.04);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-cream);
}

img,
svg,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-orange);
}

button,
input {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: 0;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

:focus-visible {
  outline: 3px solid var(--color-blue);
  outline-offset: 2px;
}

::-moz-focus-inner {
  border: 0;
}

::selection {
  background: var(--color-orange);
  color: #fff;
}

#main-content {
  display: block;
}

.layout-container {
  width: 100%;
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* Skip link */
.skip-link {
  position: fixed;
  top: 0;
  left: 16px;
  z-index: 3000;
  padding: 10px 20px;
  background: var(--color-ink);
  color: var(--color-cream);
  font-weight: 700;
  font-size: 14px;
  transform: translateY(-120%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
  color: #fff;
}

/* Progress bar */
.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  z-index: 50;
  pointer-events: none;
}

.scroll-progress[data-progress] {
  width: 0%;
  background: var(--color-orange);
  max-width: 100%;
}

.app-header {
  position: relative;
  background: var(--color-ink);
  color: var(--color-cream);
  border-bottom: 4px solid var(--color-orange);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  min-height: var(--header-h);
  gap: 0;
  padding-top: 0;
  padding-bottom: 0;
}

.brand-lockup {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  padding: 14px 0;
  margin-right: 32px;
  text-decoration: none;
  color: var(--color-cream);
}

.brand-lockup:hover {
  color: #fff;
}

.brand-lockup__name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 24px;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: #fff;
}

.brand-lockup__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--color-orange);
  text-transform: uppercase;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
  padding: 12px 0;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--color-cream);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border-gray);
}

.search-box__input {
  width: 240px;
  max-width: 38vw;
  border: 0;
  background: transparent;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--color-ink);
}

.search-box__input::placeholder {
  color: var(--color-text-gray);
}

.search-box__input:focus {
  outline: none;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  background: var(--color-orange);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  line-height: 1.2;
  text-decoration: none;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background 0.15s ease;
}

.btn-primary:hover {
  background: #e85f2b;
  color: #fff;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: transparent;
  color: var(--color-cream);
}

.nav-toggle__line {
  display: block;
  width: 16px;
  height: 2px;
  background: var(--color-cream);
  transform-origin: center;
  transition: transform 0.2s ease;
}

.nav-toggle__text {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 13px;
}

.site-nav {
  flex-basis: 100%;
  order: 5;
  border-top: 1px solid rgba(245, 240, 230, 0.15);
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
}

.nav-link {
  display: block;
  padding: 14px 18px;
  color: var(--color-cream);
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  border-bottom: 3px solid transparent;
}

.nav-link:hover {
  color: #fff;
  background: rgba(17, 17, 17, 0.4);
}

.nav-link[aria-current="page"] {
  color: #fff;
  border-bottom-color: var(--color-orange);
  background: rgba(255, 107, 53, 0.15);
}

/* Footer */
.app-footer {
  background: var(--color-ink);
  color: var(--color-cream);
  margin-top: 80px;
  border-top: 6px solid var(--color-orange);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr 1fr;
  gap: 32px;
  padding-top: 48px;
  padding-bottom: 36px;
}

.footer-card {
  min-width: 0;
}

.footer-card__title {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.brand-lockup--footer {
  padding: 0;
}

.footer-link-list li,
.footer-contact-list li {
  margin-bottom: 10px;
}

.footer-link-list a,
.footer-contact-list a {
  color: var(--color-cream);
  text-decoration: none;
  font-size: 14px;
}

.footer-link-list a:hover,
.footer-contact-list a:hover {
  color: var(--color-orange);
}

.footer-contact-list {
  font-size: 14px;
}

.footer-contact-list li {
  word-break: break-all;
}

.footer-note {
  font-size: 13px;
  color: rgba(245, 240, 230, 0.65);
  margin-bottom: 18px;
  max-width: 32ch;
}

.footer-copy {
  display: flex;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(245, 240, 230, 0.75);
}

.footer-meta {
  border-top: 1px solid rgba(245, 240, 230, 0.12);
  padding-top: 16px;
  padding-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
}

.footer-meta__icp {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(245, 240, 230, 0.55);
}

/* Section blocks */
.section-block--navy {
  background: var(--color-navy);
  color: #fff;
}

.section-block--green {
  background: var(--color-green);
  color: #fff;
}

.section-block--navy .section-block__title,
.section-block--green .section-block__title {
  color: #fff;
}

.section-block--navy .section-block__subtitle,
.section-block--green .section-block__subtitle {
  color: rgba(255, 255, 255, 0.75);
}

/* Content type */
.section-block__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 24px;
}

.section-block__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 28px;
  line-height: 1.2;
}

.section-block__subtitle {
  font-size: 14px;
  color: var(--color-text-gray);
}

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}

.card-grid--compact {
  gap: 10px;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
}

.media-card {
  background: var(--color-cream);
  border: 1px solid var(--color-border-gray);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.media-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(17, 17, 17, 0.12);
}

.media-card__cover {
  position: relative;
  aspect-ratio: 2 / 3;
  background: linear-gradient(135deg, var(--color-navy), var(--color-green));
  background-size: cover;
  background-position: center;
}

.media-card__cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(17, 17, 17, 0.35), transparent 40%);
  pointer-events: none;
}

.media-card__body {
  padding: 12px 14px 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.media-card__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.3;
}

.media-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-gray);
}

.media-card__meta .tag {
  font-family: var(--font-mono);
}

.media-card + .media-card {
  margin-top: 0;
}

/* Tag tiles */
.tag-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}

.tag-tile {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 14px;
  background: var(--color-cream);
  border-left: 5px solid var(--color-blue);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--color-ink);
  transition: background 0.15s ease;
}

.tag-tile:hover {
  background: var(--color-gray);
  color: var(--color-ink);
}

.tag-tile--accent {
  border-left-color: var(--color-orange);
  background: var(--color-cream);
}

.tag-tile--accent:hover {
  border-left-color: var(--color-purple);
}

.tag-tile__name {
  font-weight: 700;
  font-size: 16px;
}

.tag-tile__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-gray);
}

/* Entry list */
.entry-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border-gray);
}

.entry-row {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 12px 8px;
  border-bottom: 1px solid var(--color-border-gray);
  background: var(--color-cream);
}

.entry-row:hover {
  background: var(--color-gray);
}

.entry-index {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 22px;
  color: var(--color-blue);
  text-align: center;
  line-height: 1;
}

.entry-index--top {
  color: var(--color-orange);
}

.entry-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.entry-main__title {
  font-weight: 700;
  font-size: 15px;
}

.entry-main__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-gray);
}

.entry-meta {
  display: flex;
  gap: 8px;
  align-items: center;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
  line-height: 1;
  padding: 5px 8px;
  border-radius: 2px;
  letter-spacing: 0.04em;
  color: #fff;
}

.badge--new {
  background: var(--color-orange);
}

.badge--done {
  background: var(--color-green-bright);
  color: var(--color-ink);
}

.badge--hd {
  background: var(--color-blue);
}

.badge--pick {
  background: var(--color-purple);
}

.badge--hot {
  background: var(--color-amber);
  color: var(--color-ink);
}

.media-card__cover .badge {
  position: absolute;
  left: 10px;
  top: 10px;
  z-index: 2;
}

/* Tags */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  background: var(--color-gray);
  border-radius: 2px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-ink);
}

.tag--dark {
  background: var(--color-navy);
  color: #fff;
}

.tag--blue {
  background: rgba(52, 152, 219, 0.14);
  color: #1f679d;
}

.tag--orange {
  background: rgba(255, 107, 53, 0.14);
  color: #b8431b;
}

.tag--purple {
  background: rgba(155, 89, 182, 0.14);
  color: #7d3c98;
}

.tag--green {
  background: rgba(46, 204, 113, 0.18);
  color: #0e6b3d;
}

/* Index bar */
.index-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 0;
  align-items: center;
}

.index-bar__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  padding: 0 8px;
  background: var(--color-cream);
  border: 1px solid var(--color-border-gray);
  border-radius: 2px;
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-ink);
}

.index-bar__item:hover {
  background: var(--color-orange);
  color: #fff;
}

.index-bar__item[aria-current="true"] {
  background: var(--color-navy);
  color: #fff;
  border-color: var(--color-navy);
}

/* Metric bar */
.metric-bar {
  display: flex;
  align-items: center;
  gap: 10px;
}

.metric-bar__track {
  flex: 1;
  height: 8px;
  background: var(--color-gray);
  border-radius: 8px;
  overflow: hidden;
}

.metric-bar__fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--color-orange);
  transition: width 0.6s ease;
}

.metric-bar__label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-gray);
  min-width: 38px;
  text-align: right;
}

/* Rail */
.rail {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 10px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.rail > * {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.rail .media-card {
  width: 200px;
}

.rail .tag-tile {
  width: 160px;
}

/* Comparison table */
.comparison-table {
  width: 100%;
  overflow-x: auto;
  background: var(--color-cream);
  border: 1px solid var(--color-border-gray);
}

.comparison-table table {
  min-width: 480px;
}

.comparison-table th,
.comparison-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-gray);
  font-size: 14px;
}

.comparison-table th {
  background: var(--color-navy);
  color: #fff;
  font-weight: 700;
}

.comparison-table td {
  background: var(--color-cream);
}

.comparison-table tr:last-child td {
  border-bottom: 0;
}

/* Timeline list */
.timeline-list {
  display: flex;
  flex-direction: column;
  max-width: 800px;
}

.timeline-row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border-gray);
  align-items: baseline;
}

.timeline-batch {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 20px;
  color: var(--color-navy);
}

.timeline-meta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-gray);
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.reveal[data-revealed] {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 1080px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  :root {
    --header-h: 62px;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .brand-lockup {
    padding: 10px 0;
    margin-right: 16px;
  }

  .brand-lockup__name {
    font-size: 19px;
  }

  .brand-lockup__tag {
    font-size: 10px;
  }

  .nav-actions {
    gap: 8px;
    padding: 8px 0;
  }

  .search-box {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
  }

  .site-nav[data-open] {
    display: block;
  }

  .nav-link {
    padding: 14px 20px;
    border-bottom: 1px solid rgba(245, 240, 230, 0.1);
  }

  .nav-link[aria-current="page"] {
    background: rgba(255, 107, 53, 0.18);
    border-left: 4px solid var(--color-orange);
  }

  .header-inner {
    padding-top: 0;
    padding-bottom: 0;
  }

  .site-nav {
    order: 8;
    margin-left: -24px;
    margin-right: -24px;
  }
}

@media (max-width: 560px) {
  .layout-container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .brand-lockup__name {
    font-size: 17px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 32px;
  }

  .footer-card__title {
    margin-bottom: 10px;
  }

  .footer-meta {
    flex-direction: column;
    gap: 6px;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .entry-row {
    grid-template-columns: 32px 1fr auto;
    gap: 8px;
    padding: 10px 4px;
  }

  .entry-index {
    font-size: 18px;
  }

  .timeline-row {
    grid-template-columns: 56px 1fr;
  }

  .timeline-meta {
    grid-column: 2;
  }

  .section-block__title {
    font-size: 22px;
  }
}