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

:root {
  --color-primary: #0B3B2E;
  --color-accent: #F77F00;
  --color-lime: #A8C256;
  --color-ink: #1A1A1A;
  --color-bg: #F2F2F0;
  --color-white: #FFFFFF;
  --color-gray: #707070;
  --color-border: #D9D9D6;
  --color-teal: #00A8A8;
  --color-accent-hover: #FF9F1C;

  --font-heading: "Archivo", "Helvetica Neue", "Arial Narrow", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;

  --text-display: clamp(3rem, 8vw, 5rem);
  --text-h1: 2.5rem;
  --text-h2: 2rem;
  --text-h3: 1.5rem;
  --text-body: 1rem;
  --text-small: 0.875rem;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  --container-max: 1280px;
  --header-h: 76px;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.09);
  --shadow-lg: 0 12px 32px rgba(11, 59, 46, 0.16);

  --transition-fast: 0.18s ease;
  --transition-base: 0.28s ease;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.7;
  color: var(--color-ink);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

#main-content {
  flex: 1 0 auto;
}

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

a {
  color: var(--color-teal);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.2;
}

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

::selection {
  background: var(--color-accent);
  color: var(--color-white);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.site-container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.skip-link {
  position: fixed;
  top: -64px;
  left: var(--space-4);
  z-index: 2000;
  background: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-md);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.2;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(247, 127, 0, 0.35);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(247, 127, 0, 0.45);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-ink);
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(247, 127, 0, 0.06);
}

.btn--light {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn--light:hover {
  background: var(--color-lime);
  color: var(--color-ink);
}

/* ========== 头部 ========== */
.site-header {
  position: relative;
  z-index: 1000;
}

.notice-bar {
  background: var(--color-accent);
  color: var(--color-white);
  font-size: var(--text-small);
  font-weight: 500;
}

.notice-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 38px;
  padding-block: 4px;
}

.notice-bar__text {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.notice-bar__tag {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  background: var(--color-primary);
  color: var(--color-lime);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  padding: 1px 8px;
  border-radius: var(--radius-pill);
  animation: tag-pulse 2.4s ease-in-out infinite;
}

@keyframes tag-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}

.notice-bar__link {
  flex-shrink: 0;
  color: var(--color-white);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}

.notice-bar__link:hover {
  color: var(--color-primary);
}

.site-header__main {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-primary);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.05rem;
  border-radius: 12px;
  transform: skewX(-6deg);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.25);
  transition: transform var(--transition-fast);
}

a.brand:hover .brand__mark {
  transform: skewX(-6deg) scale(1.06) rotate(-2deg);
}

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

.brand__name {
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
}

.brand__slogan {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.site-nav__link {
  display: inline-block;
  padding: 8px 14px;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: var(--radius-pill);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.site-nav__link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
}

.site-nav__link[aria-current="page"] {
  background: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(247, 127, 0, 0.4);
}

.site-nav__cta {
  margin-left: var(--space-2);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 46px;
  height: 46px;
  padding: 10px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-md);
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-accent);
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) 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(-7px) rotate(-45deg);
}

body.nav-open {
  overflow: hidden;
}

/* ========== 页脚 ========== */
.site-footer {
  position: relative;
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.78);
  padding-top: var(--space-8);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-lime) 50%, var(--color-accent) 100%);
}

.site-footer::after {
  content: "34";
  position: absolute;
  right: 20px;
  bottom: 40px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(6rem, 14vw, 12rem);
  line-height: 1;
  color: rgba(255, 255, 255, 0.035);
  pointer-events: none;
  user-select: none;
}

.site-footer__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-7);
  padding-bottom: var(--space-7);
}

.site-footer__brand {
  max-width: 380px;
}

.brand--footer .brand__name {
  font-size: 1.4rem;
}

.site-footer__about {
  margin-top: var(--space-4);
  font-weight: 700;
  color: var(--color-white);
}

.site-footer__trust {
  margin-top: var(--space-3);
  font-size: var(--text-small);
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.7;
}

.site-footer__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-lime);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-2);
  position: relative;
}

.site-footer__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

.site-footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer__links a {
  display: inline-block;
  padding: 3px 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.95rem;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.site-footer__links a:hover {
  color: var(--color-accent);
  transform: translateX(4px);
}

.site-footer__contact {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  font-size: 0.95rem;
}

.site-footer__contact li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-footer__label {
  font-size: var(--text-small);
  color: rgba(255, 255, 255, 0.48);
  letter-spacing: 0.04em;
}

.site-footer__value {
  color: rgba(255, 255, 255, 0.88);
  word-break: break-all;
}

.site-footer__bottom {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-block: var(--space-4);
  font-size: var(--text-small);
  color: rgba(255, 255, 255, 0.5);
}

/* ========== 组件 ========== */
.section-head {
  display: flex;
  align-items: flex-end;
  gap: var(--space-5);
  margin-bottom: var(--space-7);
}

.section-head__index {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 4rem;
  line-height: 0.85;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  opacity: 0.22;
  flex-shrink: 0;
}

@supports (-webkit-text-stroke: 1px white) {
  .section-head__index {
    color: transparent;
    -webkit-text-stroke: 2px var(--color-accent);
    opacity: 1;
  }
}

.section-head__title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: var(--text-h2);
  line-height: 1.15;
  color: var(--color-ink);
}

.section-head__desc {
  margin-top: var(--space-2);
  color: var(--color-gray);
  font-size: var(--text-small);
  max-width: 480px;
}

.data-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.data-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.score-board {
  display: grid;
  gap: var(--space-4);
}

.score-board__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.score-board__item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.score-board__team {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
}

.score-board__team-name {
  font-size: 0.95rem;
}

.score-board__num {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.65rem;
  line-height: 1;
  color: var(--color-primary);
  min-width: 2ch;
  text-align: center;
}

.score-board__vs {
  color: var(--color-gray);
  font-size: var(--text-small);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: var(--text-small);
  font-weight: 700;
  line-height: 1.4;
  white-space: nowrap;
}

.tag--orange {
  background: rgba(247, 127, 0, 0.12);
  color: var(--color-accent);
}

.tag--green {
  background: rgba(11, 59, 46, 0.1);
  color: var(--color-primary);
}

.tag--lime {
  background: rgba(168, 194, 86, 0.2);
  color: #5A701A;
}

.tag--gray {
  background: var(--color-bg);
  color: var(--color-gray);
  border: 1px solid var(--color-border);
}

.tag--teal {
  background: rgba(0, 168, 168, 0.1);
  color: var(--color-teal);
}

.diagonal-band {
  position: relative;
  height: 64px;
  background: var(--color-primary);
  clip-path: polygon(0 22%, 100% 0, 100% 78%, 0 100%);
  margin-block: var(--space-6);
}

.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-border), var(--color-bg));
  border-radius: var(--radius-md);
}

.img-frame--ratio16x9 {
  aspect-ratio: 16 / 9;
}

.img-frame--ratio4x3 {
  aspect-ratio: 4 / 3;
}

.img-frame--portrait {
  aspect-ratio: 3 / 4;
}

.img-frame--wide {
  aspect-ratio: 21 / 9;
}

.img-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.img-frame:hover img {
  transform: scale(1.04);
}

.img-frame__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray);
  font-size: var(--text-small);
  font-weight: 500;
}

.breadcrumb {
  padding-block: var(--space-4);
  font-size: var(--text-small);
  color: var(--color-gray);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--color-border);
}

.breadcrumb__link {
  color: var(--color-gray);
  transition: color var(--transition-fast);
}

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

.breadcrumb__current {
  color: var(--color-ink);
  font-weight: 700;
}

.rail-nav {
  position: fixed;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 8px 6px;
  box-shadow: var(--shadow-md);
}

.rail-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-pill);
  color: var(--color-gray);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8rem;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.rail-nav__link:hover {
  background: rgba(247, 127, 0, 0.12);
  color: var(--color-accent);
}

.rail-nav__link[data-active="true"],
.rail-nav__link[aria-current="location"] {
  background: var(--color-primary);
  color: var(--color-white);
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(11, 59, 46, 0.35);
}

.rail-nav__link::after {
  content: attr(data-label);
  position: absolute;
  left: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-primary);
  color: var(--color-white);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  pointer-events: none;
  box-shadow: var(--shadow-md);
}

.rail-nav__link:hover::after,
.rail-nav__link[data-active="true"]::after {
  opacity: 1;
  visibility: visible;
}

[data-section] {
  scroll-margin-top: calc(var(--header-h) + 32px);
}

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 950;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: var(--color-white);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base), background var(--transition-fast);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-accent);
  transform: translateY(-3px);
}

.back-to-top__icon {
  width: 12px;
  height: 12px;
  border-top: 3px solid currentColor;
  border-left: 3px solid currentColor;
  transform: rotate(45deg);
  margin-top: 5px;
}

.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  z-index: 1500;
  transform: translateX(-50%) translateY(20px);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  pointer-events: none;
  border-left: 4px solid var(--color-lime);
}

.toast.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ========== 响应式 ========== */
@media (max-width: 992px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(330px, 86vw);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: var(--space-2);
    padding: var(--space-8) var(--space-5) var(--space-5);
    background: var(--color-primary);
    box-shadow: -12px 0 36px rgba(0, 0, 0, 0.28);
    transform: translateX(102%);
    transition: transform var(--transition-base);
    overflow-y: auto;
    z-index: 1200;
  }

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

  .site-nav[data-open]::before {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: -1;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    margin-top: var(--space-5);
  }

  .site-nav__link {
    display: block;
    padding: 12px 18px;
    font-size: 1.05rem;
    border-radius: var(--radius-md);
  }

  .site-nav__cta {
    margin-left: 0;
    margin-top: var(--space-5);
    width: 100%;
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .rail-nav {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 64px;
  }

  .notice-bar__link {
    display: none;
  }

  .notice-bar__inner {
    justify-content: center;
  }

  .site-header__bar {
    min-height: 64px;
  }

  .brand__mark {
    width: 40px;
    height: 40px;
    font-size: 0.95rem;
  }

  .brand__name {
    font-size: 1.1rem;
  }

  .brand__slogan {
    font-size: 0.66rem;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-7);
  }

  .site-footer__brand {
    max-width: none;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .section-head__index {
    font-size: 3rem;
  }

  .score-board__item {
    flex-wrap: wrap;
  }
}

@media (max-width: 480px) {
  .site-container {
    padding-inline: var(--space-4);
  }

  .notice-bar__text {
    font-size: 0.75rem;
  }

  .btn {
    padding: 9px 18px;
    font-size: 0.9rem;
  }
}

@media (min-width: 993px) {
  .site-nav[data-open] {
    transform: none;
  }
}

/* ========== 动效偏好 ========== */
@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;
  }

  .notice-bar__tag {
    animation: none;
  }
}