:root {
  --brand-orange: #FF6B35;
  --deep-navy: #1A2A3A;
  --paper-white: #F5F5F5;
  --tibetan-red: #C0392B;
  --morning-gold: #F2A93B;
  --mist-blue: #A9D4E4;
  --slate-gray: #516A78;
  --deep-ocean: #0E1A24;
  --warm-sand: #F7E8D0;
  --white: #FFFFFF;
  --font-body: "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-display: "Oswald", "Bahnschrift", "DIN Alternate", "Roboto Condensed", "Arial Narrow", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Roboto Mono", "SFMono-Regular", "Cascadia Mono", "Consolas", "Courier New", monospace;
  --text-primary: #1A2A3A;
  --text-secondary: #516A78;
  --bg-body: #F5F5F5;
  --container-w: 1280px;
  --gutter: 24px;
  --header-h: 96px;
  --radius: 2px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --t-fast: 0.25s var(--ease);
  --t-slow: 0.35s var(--ease);
  --z-progress: 3000;
  --z-header: 2000;
  --z-nav: 2100;
  --z-overlay: 2200;
}

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

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
ul,
ol,
dl,
dd,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

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

button {
  font: inherit;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: linear-gradient(180deg, rgba(255, 107, 53, 0.06), rgba(255, 107, 53, 0) 520px), var(--bg-body);
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

#main-content {
  flex: 1;
  width: 100%;
  scroll-margin-top: 24px;
}

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

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

a:focus-visible {
  outline: 3px solid var(--brand-orange);
  outline-offset: 2px;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  color: var(--deep-navy);
  line-height: 1.2;
  font-weight: 600;
}

h1 {
  font-size: clamp(32px, 6vw, 72px);
  font-weight: 500;
}

h2 {
  font-size: clamp(26px, 4vw, 44px);
}

h3 {
  font-size: clamp(20px, 2.6vw, 28px);
}

h4 {
  font-size: clamp(18px, 2vw, 22px);
}

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

.skip-link {
  position: fixed;
  top: -100%;
  left: 16px;
  z-index: var(--z-overlay);
  background: var(--deep-navy);
  color: var(--white);
  padding: 12px 20px;
  font-weight: 700;
  border-radius: 0 0 4px 4px;
  transition: top var(--t-fast);
}

.skip-link:focus {
  top: 0;
  color: var(--white);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-orange), var(--morning-gold));
  transform-origin: left center;
  transform: scaleX(0);
  z-index: var(--z-progress);
  pointer-events: none;
}

.site-header {
  position: relative;
  z-index: var(--z-header);
  background: var(--white);
  border-bottom: 3px solid var(--deep-navy);
}

.site-header::after {
  content: "";
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  right: 0;
  height: 1px;
  background: var(--brand-orange);
}

.masthead-meta {
  background: var(--deep-navy);
  color: rgba(245, 245, 245, 0.86);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.masthead-meta-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 5px var(--gutter);
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.masthead-edition {
  color: var(--morning-gold);
  font-weight: 700;
}

.masthead-date {
  color: rgba(245, 245, 245, 0.8);
}

.header-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-block {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.brand-block:hover .brand-mark {
  color: var(--brand-orange);
}

.brand-block:hover .brand-emblem {
  background: var(--deep-navy);
}

.brand-emblem {
  position: relative;
  display: block;
  width: 34px;
  height: 34px;
  background: var(--brand-orange);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
  transition: background var(--t-fast);
}

.brand-emblem::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 14px;
  height: 14px;
  background: var(--deep-navy);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
  transform: translateX(-50%);
}

.brand-texts {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-mark {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.1;
  color: var(--deep-navy);
  white-space: nowrap;
  transition: color var(--t-fast);
}

.brand-tagline {
  font-family: var(--font-body);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--slate-gray);
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-list {
  display: flex;
  align-items: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: baseline;
  gap: 5px;
  padding: 10px 9px;
  font-size: 15px;
  font-weight: 600;
  color: var(--deep-navy);
  border-bottom: 2px solid transparent;
  border-radius: 2px;
  letter-spacing: 0.04em;
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}

.nav-link:hover {
  color: var(--brand-orange);
  background: rgba(255, 107, 53, 0.06);
}

.nav-link[aria-current="page"] {
  color: var(--brand-orange);
  background: rgba(255, 107, 53, 0.09);
  border-bottom-color: var(--brand-orange);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  color: var(--tibetan-red);
  letter-spacing: 0.05em;
}

.nav-label {
  display: inline-block;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-orange);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  padding: 10px 16px;
  border-radius: var(--radius);
  border: 2px solid var(--brand-orange);
  white-space: nowrap;
  letter-spacing: 0.06em;
  transition: background var(--t-fast), border-color var(--t-fast), color var(--t-fast), transform var(--t-fast);
}

.nav-cta::after {
  content: "→";
  font-family: var(--font-mono);
  transition: transform var(--t-fast);
}

.nav-cta:hover {
  background: var(--deep-navy);
  border-color: var(--deep-navy);
  color: var(--white);
}

.nav-cta:hover::after {
  transform: translateX(3px);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: transparent;
  border: 2px solid var(--deep-navy);
  border-radius: var(--radius);
  cursor: pointer;
  flex-shrink: 0;
  padding: 0;
}

.nav-toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--deep-navy);
  transition: transform var(--t-fast), opacity var(--t-fast);
}

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

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

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section-pad {
  padding: 48px 0;
}

.section-pad-lg {
  padding: 80px 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}

.asym-grid {
  display: grid;
  grid-template-columns: 64fr 36fr;
  gap: 32px;
}

.page-head {
  padding: 48px 0 20px;
  border-bottom: 1px solid rgba(26, 42, 58, 0.12);
  margin-bottom: 32px;
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.5vw, 52px);
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.15;
  color: var(--deep-navy);
}

.page-desc {
  margin-top: 8px;
  max-width: 720px;
  color: var(--text-secondary);
  font-size: 16px;
}

.section-heading {
  margin-bottom: 32px;
}

.section-heading .section-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--brand-orange);
  border-left: 2px solid var(--tibetan-red);
  padding-left: 10px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-heading .section-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 48px);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: 0.02em;
  color: var(--deep-navy);
}

.section-heading .section-desc {
  margin-top: 10px;
  max-width: 640px;
  color: var(--text-secondary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}

.btn-primary {
  background: var(--brand-orange);
  border-color: var(--brand-orange);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--deep-navy);
  border-color: var(--deep-navy);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border-color: var(--deep-navy);
  color: var(--deep-navy);
}

.btn-outline:hover {
  background: var(--deep-navy);
  color: var(--white);
  transform: translateY(-2px);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 2px;
  padding: 20px 0 4px;
  font-size: 13px;
  color: var(--text-secondary);
}

.breadcrumb a {
  color: var(--deep-navy);
  font-weight: 600;
}

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

.breadcrumb .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin: 0 6px;
  color: rgba(26, 42, 58, 0.32);
  font-family: var(--font-mono);
}

.breadcrumb .breadcrumb-item[aria-current="page"] {
  color: var(--text-secondary);
  font-weight: 400;
}

.card {
  padding: 28px 32px;
  background: var(--warm-sand);
  border-left: 4px solid var(--brand-orange);
  box-shadow: 8px 8px 0 rgba(26, 42, 58, 0.06);
}

.card + .card {
  margin-top: 16px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--warm-sand);
  border-left: 3px solid var(--tibetan-red);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--deep-navy);
}

.prose {
  max-width: 720px;
}

.prose p {
  margin-bottom: 1.2em;
}

.prose h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 600;
  margin: 1.8em 0 0.6em;
}

.prose h3 {
  font-size: clamp(18px, 2.4vw, 24px);
  margin: 1.6em 0 0.4em;
}

.prose ul,
.prose ol {
  margin: 0 0 1.2em 1.4em;
}

.prose ul {
  list-style: none;
}

.prose ul li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 0.4em;
}

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 8px;
  height: 8px;
  background: var(--brand-orange);
  transform: rotate(45deg);
}

.prose ol {
  list-style: decimal;
}

.prose ol li {
  margin-bottom: 0.4em;
}

.prose blockquote {
  margin: 1.6em 0;
  padding: 12px 20px;
  background: var(--warm-sand);
  border-left: 4px solid var(--deep-navy);
  color: var(--text-secondary);
}

.prose a {
  font-weight: 700;
}

.accordion {
  background: var(--white);
  border-bottom: 1px solid rgba(26, 42, 58, 0.12);
}

.accordion:first-child {
  border-top: 1px solid rgba(26, 42, 58, 0.12);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  color: var(--deep-navy);
  transition: background var(--t-fast);
}

.accordion-trigger:hover {
  background: var(--warm-sand);
}

.accordion-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--brand-orange);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--brand-orange);
  transition: background var(--t-fast), color var(--t-fast), transform var(--t-fast);
}

.accordion-icon::before {
  content: "+";
}

.accordion-trigger[aria-expanded="true"] .accordion-icon {
  background: var(--brand-orange);
  color: var(--white);
}

.accordion-trigger[aria-expanded="true"] .accordion-icon::before {
  content: "−";
}

.accordion-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--t-slow);
}

.accordion-panel[data-open] {
  grid-template-rows: 1fr;
}

.accordion-panel-inner {
  min-height: 0;
  overflow: hidden;
  padding: 0 20px;
}

.accordion-panel[data-open] .accordion-panel-inner {
  padding: 0 20px 20px;
}

.tabs {
  background: var(--white);
  border: 1px solid rgba(26, 42, 58, 0.14);
  border-top: 3px solid var(--deep-navy);
}

.tabs-bar {
  display: flex;
  border-bottom: 2px solid var(--deep-navy);
  overflow-x: auto;
}

.tab-trigger {
  flex-shrink: 0;
  padding: 12px 22px;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.tab-trigger:hover {
  color: var(--deep-navy);
  background: var(--warm-sand);
}

.tab-trigger[aria-selected="true"],
.tab-trigger.is-active {
  color: var(--brand-orange);
  border-bottom-color: var(--brand-orange);
}

.tab-panel {
  padding: 24px;
}

.tab-panel[hidden] {
  display: none;
}

.media-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--mist-blue) 0%, var(--warm-sand) 60%, var(--paper-white) 100%);
  border: 2px solid var(--deep-navy);
  box-shadow: 6px 6px 0 rgba(26, 42, 58, 0.12);
}

.media-frame::after {
  content: "满冠体育CN";
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 3px 10px;
  background: var(--deep-navy);
  color: rgba(245, 245, 245, 0.82);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
}

.media-frame-landscape {
  aspect-ratio: 16 / 9;
}

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

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

.media-frame img,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.timeline-axis {
  position: relative;
  padding-left: 28px;
}

.timeline-axis::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: repeating-linear-gradient(to bottom, var(--brand-orange) 0, var(--brand-orange) 6px, transparent 6px, transparent 12px);
}

.timeline-axis-item {
  position: relative;
  padding-bottom: 28px;
}

.timeline-axis-item:last-child {
  padding-bottom: 0;
}

.timeline-axis-item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--deep-navy);
  border: 2px solid var(--brand-orange);
  border-radius: 50%;
}

.site-footer {
  position: relative;
  background: var(--deep-navy);
  color: var(--paper-white);
  margin-top: 48px;
}

.site-footer::before {
  content: "";
  display: block;
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--brand-orange) 0, var(--brand-orange) 28px, var(--morning-gold) 28px, var(--morning-gold) 38px, var(--tibetan-red) 38px, var(--tibetan-red) 46px, var(--brand-orange) 46px, var(--brand-orange) 80px);
}

.footer-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 48px var(--gutter) 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 0.9fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(245, 245, 245, 0.14);
}

.footer-brand-col {
  display: block;
}

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

.footer-brand {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--white);
  line-height: 1.2;
}

.footer-tagline {
  display: inline-block;
  margin-top: 4px;
  margin-bottom: 14px;
  padding-left: 10px;
  border-left: 3px solid var(--brand-orange);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--morning-gold);
  text-transform: uppercase;
}

.footer-trust {
  max-width: 320px;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(245, 245, 245, 0.72);
}

.footer-heading {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--morning-gold);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.footer-links li + li {
  margin-top: 8px;
}

.footer-links a {
  color: rgba(245, 245, 245, 0.82);
  font-size: 14px;
  transition: color var(--t-fast), padding-left var(--t-fast);
}

.footer-links a:hover {
  color: var(--brand-orange);
  padding-left: 4px;
}

.footer-contact-line {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(245, 245, 245, 0.78);
  margin-bottom: 4px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-top: 20px;
  font-size: 12px;
  color: rgba(245, 245, 245, 0.58);
}

.footer-copy {
  letter-spacing: 0.06em;
}

.footer-icp {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

@media (max-width: 1079px) {
  :root {
    --header-h: 72px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: var(--z-nav);
    background: var(--deep-navy);
    border-top: 3px solid var(--brand-orange);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 20px var(--gutter) 28px;
    box-shadow: 0 12px 24px rgba(14, 26, 36, 0.32);
    max-height: calc(100vh - 140px);
    overflow-y: auto;
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-item {
    border-bottom: 1px solid rgba(245, 245, 245, 0.1);
  }

  .nav-link {
    padding: 12px 10px;
    font-size: 16px;
    color: var(--paper-white);
    border-bottom: none;
    border-left: 3px solid transparent;
    border-radius: 0;
    justify-content: flex-start;
  }

  .nav-link:hover {
    color: var(--morning-gold);
    background: rgba(242, 169, 59, 0.08);
  }

  .nav-link[aria-current="page"] {
    color: var(--brand-orange);
    background: rgba(255, 107, 53, 0.1);
    border-left-color: var(--brand-orange);
    border-bottom: none;
  }

  .nav-cta {
    margin-top: 20px;
    justify-content: center;
  }
}

@media (max-width: 959px) {
  .grid-2,
  .grid-3,
  .asym-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .section-pad {
    padding: 32px 0;
  }

  .section-pad-lg {
    padding: 48px 0;
  }

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

@media (max-width: 640px) {
  :root {
    --gutter: 16px;
  }

  .asym-grid {
    gap: 16px;
  }

  .page-head {
    padding: 24px 0 16px;
    margin-bottom: 24px;
  }
}

@media (max-width: 599px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-inner {
    padding-top: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}