:root {
  --green-deep: #0B3D2E;
  --green-pitch: #2E7D32;
  --red-arena: #D32F2F;
  --silver-metal: #C0C0C0;
  --gold-dark: #B8860B;
  --paper: #F5F0E6;
  --ink: #1E1E1E;
  --frost: #F8FCF8;
  --sky-blue: #7CB9E8;

  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: "Roboto Mono", "SF Mono", "JetBrains Mono", "Fira Code", Consolas, monospace;

  --container: 1200px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  --grad-arena: linear-gradient(118deg, var(--green-deep) 0%, var(--green-deep) 42%, #146152 42.5%, var(--red-arena) 46%, var(--red-arena) 46.5%, var(--paper) 46.6%, var(--paper) 100%);
  --grad-red: linear-gradient(135deg, #E53935 0%, var(--red-arena) 62%, #B71C1C 100%);
  --grad-green: linear-gradient(135deg, #093626 0%, var(--green-deep) 52%, #146152 100%);
  --grad-paper: linear-gradient(135deg, #FBF8F2 0%, var(--paper) 56%, #EDE5D6 100%);

  --shadow-card: 0 1px 2px rgba(30,30,30,0.06), 0 8px 24px rgba(30,30,30,0.05);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  color-scheme: light;
}

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

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

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  line-height: 1.2;
  font-weight: 400;
  color: var(--ink);
}

p { text-wrap: pretty; }
a { color: var(--ink); }
img, svg { display: block; max-width: 100%; }

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

::selection {
  background: var(--red-arena);
  color: var(--frost);
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

main#main-content,
.page-main {
  flex: 1 0 auto;
  background: var(--paper);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.section { padding-block: clamp(3rem, 6vw, 5.5rem); }
.section--tight { padding-block: clamp(2rem, 4vw, 3.5rem); }
.mono { font-family: var(--font-mono); }

.divider {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--silver-metal) 0%, var(--silver-metal) 70%, var(--red-arena) 70%, var(--red-arena) 78%, var(--gold-dark) 78%, var(--gold-dark) 100%);
}

.grid {
  display: grid;
  gap: var(--gutter);
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.display-title {
  font-weight: 200;
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  line-height: 1.04;
  letter-spacing: 0.01em;
  text-wrap: balance;
}
.display-title--sm { font-size: clamp(2rem, 4.5vw, 3rem); }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-dark);
}
.section-label::before {
  content: '';
  width: 2.2rem;
  height: 2px;
  background: var(--red-arena);
}

.lead-text {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  font-weight: 300;
  line-height: 1.8;
  color: rgba(30,30,30,0.82);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.8rem 1.6rem;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.2s var(--ease);
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--red-arena);
  border-color: var(--red-arena);
  color: var(--frost);
}
.btn--primary:hover {
  background: #B71C1C;
  border-color: #B71C1C;
  color: var(--frost);
}

.btn--ghost {
  border-color: var(--frost);
  color: var(--frost);
}
.btn--ghost:hover {
  background: var(--frost);
  color: var(--green-deep);
}

.breadcrumb { margin-bottom: 2rem; }
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink);
}
.breadcrumb__list li {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.breadcrumb__list li:not(:last-child)::after {
  content: '/';
  color: var(--red-arena);
}
.breadcrumb__list a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}
.breadcrumb__list a:hover { border-bottom-color: var(--red-arena); }
.breadcrumb__list [aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}

.card {
  position: relative;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background: var(--paper);
  border: 1px solid var(--silver-metal);
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.card:hover {
  border-color: var(--red-arena);
  box-shadow: 0 2px 4px rgba(30,30,30,0.08), 0 14px 34px rgba(11,61,46,0.14);
}
.card__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-dark);
}
.card__title {
  margin: 0.75rem 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
}
.card__text {
  font-size: 0.95rem;
  color: rgba(30,30,30,0.78);
}

.tag {
  display: inline-block;
  padding: 0.28rem 0.6rem;
  border: 1px solid var(--silver-metal);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.tag--red { border-color: var(--red-arena); color: var(--red-arena); }
.tag--gold { border-color: var(--gold-dark); color: var(--gold-dark); }

.statistic {
  display: grid;
  gap: 0.4rem;
  padding: 1.2rem 1.4rem;
  border-left: 3px solid var(--red-arena);
  background: rgba(245,240,230,0.6);
}
.statistic__value {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--red-arena);
}
.statistic__value--gold { color: var(--gold-dark); }
.statistic__label {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: rgba(30,30,30,0.72);
}

.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(11,61,46,0.10) 0%, rgba(11,61,46,0) 48%),
    var(--grad-paper);
  border: 1px solid var(--silver-metal);
}
.img-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 42%;
  height: 100%;
  background: linear-gradient(118deg, rgba(211,47,47,0.16) 0%, rgba(211,47,47,0) 62%);
  clip-path: polygon(0 0, 100% 0, 74% 100%, 0 100%);
}
.img-frame--caption::after {
  content: attr(data-caption);
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 0.42rem 0.7rem;
  background: var(--green-deep);
  color: var(--frost);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.paper-stack {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--silver-metal);
  box-shadow:
    0 1px 2px rgba(30,30,30,0.06),
    0 0 0 1px rgba(245,240,230,0.9),
    8px 8px 0 -1px rgba(11,61,46,0.14);
}

.skip-link {
  position: fixed;
  z-index: 1001;
  top: -4rem;
  left: 1rem;
  padding: 0.8rem 1.4rem;
  background: var(--red-arena);
  color: var(--frost);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid rgba(255,255,255,0.4);
  transition: top 0.25s var(--ease);
}
.skip-link:focus-visible { top: 1rem; }

.site-header {
  position: relative;
  background: var(--green-deep);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 1100;
  pointer-events: none;
  background: rgba(245,240,230,0.12);
}
.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--red-arena) 0%, var(--red-arena) 72%, var(--gold-dark) 100%);
  transform: scaleX(0);
  transform-origin: left center;
}

.header-brandbar {
  position: relative;
  background:
    linear-gradient(120deg, rgba(124,185,232,0.16) 0%, rgba(124,185,232,0) 38%),
    linear-gradient(90deg, var(--green-deep) 0%, #103F31 100%);
  color: var(--frost);
}
.header-brandbar::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--red-arena) 0%,
    var(--red-arena) 46%,
    var(--gold-dark) 46%,
    var(--gold-dark) 50%,
    var(--silver-metal) 50%,
    var(--silver-metal) 100%);
}

.header-brandbar__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: var(--container);
  margin-inline: auto;
  padding: 1.05rem var(--gutter);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
  text-decoration: none;
  color: var(--frost);
}
.brand-lockup__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--red-arena);
  color: var(--frost);
  font-family: var(--font-sans);
  font-size: 1.35rem;
  font-weight: 700;
  clip-path: polygon(0 0, 82% 0, 100% 18%, 100% 100%, 0 100%);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.brand-lockup__mark::before { content: '大'; }
.brand-lockup:hover .brand-lockup__mark {
  transform: translateY(-2px);
  box-shadow: 0 5px 14px rgba(211,47,47,0.42);
}
.brand-lockup__text {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-lockup__name {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--frost);
}
.brand-lockup__domain {
  margin-top: 0.1rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--silver-metal);
}

.header-slogan {
  margin-inline: auto;
  font-size: clamp(0.85rem, 1.6vw, 1.05rem);
  font-weight: 300;
  letter-spacing: 0.16em;
  color: rgba(248,252,248,0.88);
  white-space: nowrap;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--silver-metal);
  white-space: nowrap;
}
.header-meta__sep { color: var(--red-arena); }

.header-navbar {
  position: relative;
  background: var(--paper);
  box-shadow: inset 0 -1px 0 rgba(192,192,192,0.7);
}
.header-navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  min-height: 3.75rem;
}

.site-nav { display: block; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  list-style: none;
  border-left: 3px solid var(--red-arena);
  padding-left: 0.4rem;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.9rem 1rem;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 0.55rem;
  height: 2px;
  background: linear-gradient(90deg, var(--red-arena) 0%, var(--red-arena) 62%, var(--gold-dark) 100%);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s var(--ease);
}
.nav-link:hover { color: var(--red-arena); }
.nav-link:hover::after,
.nav-link[aria-current="page"]::after { transform: scaleX(1); }
.nav-link[aria-current="page"] {
  color: var(--red-arena);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.7rem;
  padding: 0.55rem 0.85rem;
  background: transparent;
  border: 1px solid var(--silver-metal);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav-toggle:hover { border-color: var(--red-arena); }
.nav-toggle__line {
  position: relative;
  display: block;
  width: 1.4rem;
  height: 1px;
  background: var(--ink);
  transition: background 0.2s var(--ease);
}
.nav-toggle__line::before,
.nav-toggle__line::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: var(--ink);
  transition: transform 0.3s var(--ease);
}
.nav-toggle__line::before { transform: translateY(-6px) rotate(0deg); }
.nav-toggle__line::after { transform: translateY(6px) rotate(0deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__line { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__line::before { transform: translateY(0) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__line::after { transform: translateY(0) rotate(-45deg); }
.nav-toggle__text { font-weight: 500; letter-spacing: 0.12em; }

.site-footer {
  position: relative;
  margin-top: auto;
  background:
    linear-gradient(90deg, rgba(11,61,46,0.96) 0%, rgba(20,97,82,0.92) 100%),
    var(--green-deep);
  color: var(--frost);
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg,
    var(--red-arena) 0%,
    var(--red-arena) 55%,
    var(--gold-dark) 55%,
    var(--gold-dark) 58%,
    var(--silver-metal) 58%,
    var(--silver-metal) 100%);
  z-index: 1;
}

.footer-main {
  position: relative;
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: var(--gutter);
  max-width: var(--container);
  margin-inline: auto;
  padding: 4.5rem var(--gutter) 2.8rem;
}
.footer-main::after {
  content: 'MATCH / RECORD / RIVALRY';
  position: absolute;
  right: 0;
  bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: clamp(0.55rem, 1vw, 0.8rem);
  letter-spacing: 0.32em;
  color: rgba(192,192,192,0.16);
  pointer-events: none;
  white-space: nowrap;
}

.footer-brand__name {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--frost);
}
.footer-brand__slogan {
  margin-top: 0.4rem;
  font-weight: 300;
  letter-spacing: 0.16em;
  color: var(--silver-metal);
}
.footer-trust {
  margin-top: 1.4rem;
  max-width: 38ch;
  padding-left: 1rem;
  border-left: 2px solid var(--gold-dark);
  font-size: 0.9rem;
  line-height: 1.85;
  color: rgba(248,252,248,0.78);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gutter);
}

.footer-col__title {
  margin-bottom: 1rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid rgba(192,192,192,0.25);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-dark);
}
.footer-col__list {
  display: grid;
  gap: 0.65rem;
  list-style: none;
}
.footer-col__list li {
  font-size: 0.88rem;
  color: rgba(248,252,248,0.78);
  line-height: 1.5;
}
.footer-col__list a {
  color: var(--frost);
  text-decoration: none;
  font-size: 0.92rem;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.footer-col__list a:hover {
  color: var(--silver-metal);
  border-bottom-color: var(--red-arena);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem 1.5rem;
  max-width: var(--container);
  margin-inline: auto;
  padding: 1rem var(--gutter) 1.2rem;
  border-top: 1px solid rgba(192,192,192,0.22);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--silver-metal);
}
.footer-bottom p { margin: 0; }
.footer-copy { font-weight: 500; }
.footer-icp { opacity: 0.85; }

.back-top {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.95rem;
  background: transparent;
  border: 1px solid rgba(192,192,192,0.5);
  color: var(--frost);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.back-top:hover {
  background: var(--red-arena);
  border-color: var(--red-arena);
  color: var(--frost);
}

@media (max-width: 1024px) {
  .header-meta { display: none; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .header-slogan { display: none; }
  .header-navbar__inner { justify-content: flex-end; }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 600;
    background: var(--paper);
    border-top: 3px solid var(--red-arena);
    box-shadow: 0 18px 32px rgba(27,27,27,0.18);
  }
  .site-nav[data-open] { display: block; }

  .nav-list {
    flex-direction: column;
    gap: 0;
    padding: 0.6rem;
    border-left: 0;
  }
  .nav-list__item { width: 100%; }
  .nav-link {
    display: block;
    padding: 0.85rem 0.9rem;
    border-bottom: 1px solid rgba(192,192,192,0.45);
  }
  .nav-link::after { display: none; }
  .nav-link[aria-current="page"] {
    background: rgba(211,47,47,0.06);
    color: var(--red-arena);
    border-left: 3px solid var(--red-arena);
  }

  .footer-main {
    grid-template-columns: 1fr;
    padding-top: 3.5rem;
    gap: 2.5rem;
  }
  .footer-links { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .header-brandbar__inner { gap: 0.75rem; }
  .brand-lockup__name { font-size: 1.12rem; }
  .brand-lockup__domain { font-size: 0.54rem; }
  .footer-links { grid-template-columns: 1fr; }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }
}