:root {
  --bg-deep: #0B1120;
  --bg-panel: #161F36;
  --border-line: #243256;
  --accent-red: #FF3B4C;
  --accent-gold: #FFC53D;
  --accent-cyan: #13E8D2;
  --text-main: #F6F8FF;
  --text-dim: #A9B4D2;
  --glass-white: rgba(255,255,255,0.06);
  --font-display: 'HarmonyOS Sans SC', 'Noto Sans CJK SC', 'PingFang SC', sans-serif;
  --font-body: 'Noto Sans CJK SC', 'PingFang SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'Roboto Mono', monospace;
  --container-max: 1440px;
  --header-height: 70px;
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 160ms var(--ease-out);
}

a:hover {
  color: var(--accent-red);
}

ul,
ol {
  list-style: none;
}

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

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

:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

::selection {
  background: var(--accent-red);
  color: var(--text-main);
}

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 24px;
}

#main-content {
  min-height: 60vh;
}

.skip-link {
  position: fixed;
  top: -100%;
  left: 16px;
  z-index: 1000;
  background: var(--accent-gold);
  color: var(--bg-deep);
  padding: 8px 16px;
  font-weight: 700;
  border-radius: 0 0 4px 4px;
  transition: top 200ms var(--ease-out);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.skip-link:focus {
  top: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border: 2px solid var(--accent-red);
  color: var(--accent-red);
  background: transparent;
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.2;
  border-radius: 2px;
  cursor: pointer;
  transition: background 200ms var(--ease-out), border-color 200ms var(--ease-out), color 200ms var(--ease-out), transform 200ms var(--ease-out);
}

.btn:hover {
  background: var(--accent-red);
  color: var(--text-main);
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--accent-red);
  border-color: var(--accent-red);
  color: var(--text-main);
}

.btn--primary:hover {
  background: #FF5A68;
  border-color: #FF5A68;
}

.btn--ghost {
  border-color: var(--border-line);
  color: var(--text-main);
}

.btn--ghost:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: transparent;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-dim);
  padding: 16px 0;
}

.breadcrumb__link {
  color: var(--text-dim);
}

.breadcrumb__link:hover {
  color: var(--accent-red);
}

.breadcrumb__sep {
  color: var(--border-line);
  font-family: var(--font-mono);
}

.section {
  padding: 64px 0;
}

.section-title {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.section-title__index {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section-title__text {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: 0.01em;
}

.section-title__note {
  font-size: 0.875rem;
  color: var(--text-dim);
  margin-left: 12px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  background: transparent;
  border: 1px solid var(--border-line);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-dim);
  white-space: nowrap;
}

.tag--red {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

.tag--gold {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.tag--cyan {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.card {
  background: var(--bg-panel);
  border: 2px solid var(--border-line);
  padding: 24px;
  border-radius: 4px;
  position: relative;
  transition: transform 200ms var(--ease-out), border-color 200ms var(--ease-out), box-shadow 200ms var(--ease-out);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-red);
  box-shadow: 8px 8px 0 rgba(255, 59, 76, 0.15);
}

.card__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  line-height: 1.3;
  margin-bottom: 8px;
  color: var(--text-main);
}

.card__meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.card__text {
  color: var(--text-dim);
  font-size: 0.95rem;
}

.print-frame {
  background: var(--bg-panel);
  border: 2px solid var(--border-line);
  padding: 24px;
  border-radius: 2px;
  position: relative;
  box-shadow: 4px 4px 0 rgba(0,0,0,0.25);
}

.print-frame::before {
  content: '';
  position: absolute;
  top: -8px;
  right: -8px;
  width: 18px;
  height: 18px;
  background: var(--accent-red);
  transform: rotate(12deg);
  pointer-events: none;
}

.tape {
  height: 8px;
  margin: 32px 0;
  background: linear-gradient(90deg, var(--accent-red) 0%, var(--accent-red) 78%, var(--accent-gold) 78%, var(--accent-gold) 100%);
  transform: skew(-20deg);
  opacity: 0.9;
}

.scoreboard {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--bg-panel);
  border: 2px solid var(--border-line);
  padding: 16px 24px;
  border-radius: 2px;
}

.scoreboard__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.scoreboard__value {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent-red);
  line-height: 1;
}

.timeline {
  position: relative;
  padding-left: 24px;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 8px;
  width: 2px;
  height: 100%;
  background: var(--border-line);
}

.timeline__item {
  position: relative;
  padding-bottom: 28px;
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: -16px;
  top: 4px;
  width: 10px;
  height: 10px;
  background: var(--accent-red);
  border: 2px solid var(--accent-gold);
  transform: rotate(45deg);
}

.timeline__date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  letter-spacing: 0.05em;
}

.image-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--border-line) 0%, var(--bg-panel) 100%);
  border: 2px solid var(--border-line);
  aspect-ratio: 16 / 9;
  min-height: 120px;
}

.image-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(120deg, transparent 38%, var(--accent-red) 38%, var(--accent-red) 42%, transparent 42%),
    linear-gradient(120deg, transparent 68%, var(--accent-gold) 68%, var(--accent-gold) 72%, transparent 72%);
  opacity: 0.25;
  pointer-events: none;
}

.image-frame img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: transparent;
  transition: background 300ms var(--ease-out), box-shadow 300ms var(--ease-out), backdrop-filter 300ms var(--ease-out);
}

.site-header.is-scrolled {
  background: rgba(11, 17, 32, 0.85);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.header-top {
  background: rgba(11, 17, 32, 0.62);
  border-bottom: 1px solid var(--border-line);
  font-size: 0.875rem;
  color: var(--text-dim);
}

.header-top__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  min-height: 36px;
}

.header-top__txt {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

.header-top__mode {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-gold);
  border: 1px solid var(--accent-gold);
  padding: 1px 8px;
  border-radius: 2px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.header-main__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-height);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--accent-red);
  color: var(--bg-deep);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.2rem;
  line-height: 1;
  transform: skew(-10deg);
  box-shadow: 4px 4px 0 var(--accent-gold);
  border-radius: 2px;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.15rem;
  letter-spacing: 0.03em;
  color: var(--text-main);
}

.brand__tag {
  font-size: 0.68rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.brand--footer .brand__mark {
  background: var(--accent-gold);
  color: var(--bg-deep);
  box-shadow: 4px 4px 0 var(--accent-red);
}

.brand--footer .brand__name {
  color: var(--text-main);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__link {
  display: inline-block;
  padding: 8px 14px;
  color: var(--text-main);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  border-bottom: 2px solid transparent;
  border-radius: 2px;
}

.nav__link:hover {
  color: var(--accent-red);
}

.nav__link[aria-current="page"] {
  color: var(--accent-red);
  border-bottom-color: var(--accent-red);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 48px;
  height: 48px;
  border: 1px solid var(--border-line);
  border-radius: 4px;
  background: rgba(11, 17, 32, 0.4);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.nav-toggle__bar {
  width: 20px;
  height: 2px;
  background: var(--text-main);
  border-radius: 1px;
  transition: transform 280ms var(--ease-out), opacity 200ms var(--ease-out);
}

.nav-toggle__label {
  font-size: 0.6rem;
  color: var(--text-dim);
  line-height: 1;
  letter-spacing: 0.1em;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.site-footer {
  border-top: 2px solid var(--border-line);
  background: linear-gradient(180deg, var(--bg-deep) 0%, #0D1530 100%);
  padding: 64px 0 24px;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--accent-gold);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer-links li + li {
  margin-top: 10px;
}

.footer-links a {
  color: var(--text-dim);
}

.footer-links a:hover {
  color: var(--accent-red);
}

.footer-contact__list li {
  color: var(--text-dim);
  margin-bottom: 8px;
  font-size: 0.95rem;
  word-break: break-word;
}

.footer-contact__note {
  color: var(--text-dim);
  font-size: 0.8rem;
  margin-top: 12px;
  border-left: 2px solid var(--accent-gold);
  padding-left: 12px;
}

.footer-brand__note {
  color: var(--text-dim);
  font-size: 0.875rem;
  margin-top: 16px;
  max-width: 320px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-line);
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-copy,
.footer-icp,
.footer-note,
.footer-legal {
  margin: 0;
}

.footer-legal a {
  color: var(--accent-cyan);
}

.footer-legal a:hover {
  color: var(--accent-red);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}

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

@media (max-width: 1100px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    height: 100dvh;
    width: min(320px, 80vw);
    background: var(--bg-panel);
    border-left: 2px solid var(--accent-red);
    padding: 96px 32px 32px;
    transform: translateX(100%);
    transition: transform 300ms var(--ease-out);
    box-shadow: -8px 0 24px rgba(0,0,0,0.3);
    overflow-y: auto;
  }

  .nav[data-open] {
    transform: translateX(0);
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .nav__link {
    display: block;
    font-size: 1.15rem;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-line);
    border-radius: 0;
  }

  .nav__link[aria-current="page"] {
    border-bottom-color: var(--accent-red);
  }

  .header-top__txt {
    font-size: 0.75rem;
  }
}

@media (max-width: 600px) {
  .container {
    padding-inline: 16px;
  }

  .section {
    padding: 40px 0;
  }

  .header-main__inner {
    min-height: 60px;
  }

  .brand__mark {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }

  .brand__name {
    font-size: 1rem;
  }

  .brand__tag {
    display: none;
  }

  .header-top__mode {
    font-size: 0.6rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }

  .footer-legal {
    display: flex;
    gap: 12px;
  }

  .card {
    padding: 16px;
  }

  .tape {
    margin: 20px 0;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

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