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

:root {
  --c-ink: #0B1E3A;
  --c-night: #0D2B52;
  --c-lime: #C6FF00;
  --c-gold: #F5C518;
  --c-paper: #F4E8C1;
  --c-white: #FFFFFF;
  --c-charcoal: #121212;
  --c-steel: #B0C4DE;

  --font-head: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Noto Serif SC", "Source Han Serif SC", "Source Han Serif CN", "Songti SC", "SimSun", Georgia, serif;
  --font-num: "Archivo", "Roboto Mono", "SF Mono", "Consolas", "Liberation Mono", monospace;

  --container-w: 1280px;
  --header-top-h: 64px;
  --header-nav-h: 54px;
  --header-total: calc(var(--header-top-h) + var(--header-nav-h));

  --radius: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --glass-bg: rgba(11, 30, 58, 0.76);
  --glass-brd: rgba(255, 255, 255, 0.12);
  --shadow: 0 18px 50px rgba(4, 12, 28, 0.5);
  --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

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

body {
  font-family: var(--font-body);
  background-color: var(--c-ink);
  color: var(--c-white);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  background-color: transparent;
}

button {
  font-family: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

::selection {
  background: var(--c-lime);
  color: var(--c-ink);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--c-ink);
}

::-webkit-scrollbar-thumb {
  background: var(--c-night);
  border-radius: 5px;
  border: 2px solid var(--c-ink);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--c-gold);
}

.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;
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--c-gold);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 1rem;
  z-index: 2000;
  background: var(--c-lime);
  color: var(--c-ink);
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  transition: top 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 6px 24px rgba(198, 255, 0, 0.3);
}

.skip-link:focus {
  top: 1rem;
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 3vw, 2.5rem);
}

#main-content {
  padding-top: var(--header-total);
  min-height: 62vh;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.22;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

h3 {
  font-size: 1.3rem;
}

p {
  text-wrap: pretty;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.5rem;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.92rem;
  line-height: 1.3;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  position: relative;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-lime {
  background: var(--c-lime);
  color: var(--c-ink);
  box-shadow: 0 4px 20px rgba(198, 255, 0, 0.24);
}

.btn-lime:hover {
  background: transparent;
  border-color: var(--c-lime);
  color: var(--c-lime);
  box-shadow: 0 8px 30px rgba(198, 255, 0, 0.14);
}

.btn-gold {
  background: var(--c-gold);
  color: var(--c-charcoal);
  box-shadow: 0 4px 20px rgba(245, 197, 24, 0.22);
}

.btn-gold:hover {
  background: transparent;
  border-color: var(--c-gold);
  color: var(--c-gold);
  box-shadow: 0 8px 30px rgba(245, 197, 24, 0.12);
}

.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.28);
  color: var(--c-white);
}

.btn-ghost:hover {
  border-color: var(--c-lime);
  color: var(--c-lime);
}

.btn-sm {
  padding: 0.45rem 1rem;
  font-size: 0.82rem;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 30, 58, 0.7);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.site-header.is-scrolled {
  background: rgba(7, 18, 38, 0.92);
  border-bottom-color: var(--glass-brd);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 1500;
  background: linear-gradient(90deg, var(--c-lime), var(--c-gold));
  box-shadow: 0 0 12px rgba(198, 255, 0, 0.4);
  pointer-events: none;
  transition: width 0.08s ease-out;
}

.header-top {
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.header-top-inner {
  height: var(--header-top-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-cta {
  position: relative;
  overflow: hidden;
}

.header-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 55%;
  height: 100%;
  background: rgba(255, 255, 255, 0.22);
  transform: skewX(-24deg);
  transition: left 0.5s ease;
}

.header-cta:hover::before {
  left: 130%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--c-white);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--c-lime);
  color: var(--c-ink);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 0.82rem;
  letter-spacing: -0.05em;
  border-radius: 10px 4px 10px 4px;
  transition: border-radius 0.3s ease, transform 0.3s ease;
  flex-shrink: 0;
}

.brand:hover .brand-mark {
  border-radius: 4px 10px 4px 10px;
  transform: rotate(-4deg);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-cn {
  display: flex;
  align-items: baseline;
  gap: 0.2rem;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.2rem;
  color: var(--c-white);
  letter-spacing: 0.02em;
}

.brand-cn em {
  font-style: normal;
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.66rem;
  line-height: 1;
  color: var(--c-lime);
  background: rgba(198, 255, 0, 0.1);
  border: 1px solid rgba(198, 255, 0, 0.35);
  border-radius: 4px;
  padding: 0.16rem 0.32rem;
  margin-left: 0.3rem;
  letter-spacing: 0.05em;
}

.brand-en {
  font-family: var(--font-num);
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  color: var(--c-steel);
  text-transform: uppercase;
  margin-top: 0.14rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.25s ease, background 0.25s ease;
  flex-shrink: 0;
}

.nav-toggle:hover {
  border-color: var(--c-lime);
  background: rgba(198, 255, 0, 0.06);
}

.nav-toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-white);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.2s ease, background 0.2s ease;
}

.nav-toggle:hover .nav-toggle-line {
  background: var(--c-lime);
}

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

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

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

.header-nav-inner {
  min-height: var(--header-nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 6px;
}

.site-nav .nav-list {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
  flex-wrap: wrap;
}

.site-nav .nav-list a {
  display: inline-block;
  padding: 0.48rem 1.05rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.74);
  text-decoration: none;
  transition: var(--transition);
  line-height: 1.3;
}

.site-nav .nav-list a:hover {
  color: var(--c-lime);
  background: rgba(198, 255, 0, 0.08);
  border-color: rgba(198, 255, 0, 0.25);
}

.site-nav .nav-list a[aria-current="page"] {
  color: var(--c-ink);
  background: var(--c-lime);
  border-color: var(--c-lime);
  font-weight: 700;
  box-shadow: 0 4px 18px rgba(198, 255, 0, 0.22);
}

.nav-status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-head);
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--c-steel);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-lime);
  box-shadow: 0 0 10px rgba(198, 255, 0, 0.7);
  animation: xl-pulse 2.4s infinite;
  flex-shrink: 0;
}

@keyframes xl-pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.55;
    transform: scale(0.72);
  }
}

.site-footer {
  position: relative;
  background-color: #081627;
  background-image: radial-gradient(ellipse 50% 42% at 85% 100%, rgba(198, 255, 0, 0.07), transparent 70%);
  color: rgba(255, 255, 255, 0.85);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-lime), var(--c-gold) 60%, transparent);
  z-index: 1;
}

.site-footer::after {
  content: "新利体育";
  position: absolute;
  right: -1.5rem;
  bottom: -3rem;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(6rem, 16vw, 14rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.04);
  pointer-events: none;
  z-index: 0;
}

.footer-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  padding-block: 3.5rem 2.8rem;
}

.footer-about,
.footer-sitemap,
.footer-legal {
  display: flex;
  flex-direction: column;
}

.footer-brand {
  margin-bottom: 0.4rem;
}

.footer-mission {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--c-paper);
  margin: 1.25rem 0 0.5rem;
  max-width: 22em;
  line-height: 1.5;
}

.footer-trust {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.58);
  max-width: 36em;
  line-height: 1.75;
  margin-top: 0.3rem;
}

.footer-title {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--c-steel);
  text-transform: uppercase;
  margin-bottom: 1.1rem;
  position: relative;
  padding-bottom: 0.55rem;
}

.footer-title::after {
  content: "";
  display: block;
  width: 26px;
  height: 2px;
  background: var(--c-lime);
  position: absolute;
  bottom: 0;
  left: 0;
  border-radius: 1px;
}

.footer-links,
.footer-meta {
  list-style: none;
  display: grid;
  gap: 0.62rem;
}

.footer-links a,
.footer-meta a {
  display: inline-block;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.94rem;
  transition: color 0.25s ease, padding-left 0.25s ease;
}

.footer-links a:hover,
.footer-meta a:hover {
  color: var(--c-lime);
  padding-left: 6px;
}

.footer-icp {
  margin-top: 1.2rem;
  font-family: var(--font-num);
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.42);
}

.footer-bottom {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-block: 1.15rem;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-num);
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  font-family: var(--font-head);
  font-size: 0.82rem;
  margin-bottom: 1.5rem;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb li::after {
  content: "/";
  color: rgba(255, 255, 255, 0.28);
  font-size: 0.8rem;
}

.breadcrumb li:last-child::after {
  display: none;
}

.breadcrumb a {
  color: var(--c-steel);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--c-lime);
}

.breadcrumb li[aria-current="page"] {
  color: var(--c-lime);
  font-weight: 600;
}

.section {
  padding-block: clamp(3rem, 7vw, 5.5rem);
}

.section--night {
  background: var(--c-night);
}

.section--paper {
  background: var(--c-paper);
  color: var(--c-charcoal);
}

.section--paper .section-title::before {
  background: var(--c-gold);
}

.section--paper .section-anno {
  color: rgba(18, 18, 18, 0.45);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2.5rem;
  position: relative;
}

.section-title {
  position: relative;
  font-size: clamp(1.8rem, 4vw, 3.15rem);
  line-height: 1.15;
  margin: 0;
}

.section-title::before {
  content: "";
  display: inline-block;
  width: 0.4em;
  height: 0.4em;
  margin-right: 0.35em;
  background: var(--c-lime);
  border-radius: 2px;
  transform: rotate(45deg) translateY(-0.15em);
  vertical-align: middle;
}

.section-anno {
  writing-mode: vertical-rl;
  font-family: var(--font-head);
  font-size: 0.75rem;
  letter-spacing: 0.34em;
  color: var(--c-steel);
  opacity: 0.78;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
  text-orientation: mixed;
}

.card,
.stat-card,
.glass-card {
  position: relative;
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: var(--transition);
  overflow: hidden;
}

.card {
  background: var(--c-night);
  border: 1px solid var(--glass-brd);
}

.card:hover {
  border-color: rgba(198, 255, 0, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.stat-card {
  background: var(--c-night);
  border: 1px solid var(--glass-brd);
}

.stat-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--c-lime), transparent 70%);
  opacity: 0;
  transition: opacity 0.35s ease;
}

.stat-card:hover {
  border-color: rgba(198, 255, 0, 0.32);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.stat-card:hover::after {
  opacity: 1;
}

.stat-label {
  display: block;
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--c-steel);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.stat-big {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1;
  color: var(--c-lime);
}

.stat-big--gold {
  color: var(--c-gold);
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--shadow);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-head);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-pill);
  background: rgba(198, 255, 0, 0.1);
  border: 1px solid rgba(198, 255, 0, 0.3);
  color: var(--c-lime);
  white-space: nowrap;
}

.tag--gold {
  background: rgba(245, 197, 24, 0.12);
  border-color: rgba(245, 197, 24, 0.35);
  color: var(--c-gold);
}

.tag--steel {
  background: rgba(176, 196, 222, 0.08);
  border-color: rgba(176, 196, 222, 0.25);
  color: var(--c-steel);
}

.data-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.82rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--font-num);
}

.data-row:last-child {
  border-bottom: 0;
}

.data-label {
  font-family: var(--font-body);
  font-size: 0.94rem;
  color: var(--c-steel);
}

.data-value {
  font-weight: 700;
  color: var(--c-lime);
  font-size: 1.06rem;
}

.data-delta {
  font-size: 0.76rem;
  font-weight: 700;
  padding: 0.16rem 0.5rem;
  border-radius: var(--radius-pill);
  background: rgba(198, 255, 0, 0.12);
  color: var(--c-lime);
  font-family: var(--font-num);
}

.data-delta--down {
  background: rgba(245, 197, 24, 0.14);
  color: var(--c-gold);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--c-gold);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.lead {
  font-size: 1.12rem;
  color: var(--c-steel);
  max-width: 60ch;
  line-height: 1.8;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--c-lime);
  text-decoration: none;
  transition: gap 0.25s ease;
}

.link-arrow::after {
  content: "→";
  font-size: 1.1rem;
  transition: transform 0.25s ease;
}

.link-arrow:hover {
  gap: 0.75rem;
}

.link-arrow:hover::after {
  transform: translateX(4px);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

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

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.img-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--c-night);
  border: 1px solid var(--glass-brd);
  display: block;
  min-height: 120px;
}

.img-frame::before {
  content: "";
  display: block;
  padding-bottom: 62.5%;
}

.img-frame--wide::before {
  padding-bottom: 50%;
}

.img-frame--square::before {
  padding-bottom: 100%;
}

.img-frame--portrait::before {
  padding-bottom: 130%;
}

.img-frame > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.grid-bg {
  background-image:
    linear-gradient(rgba(198, 255, 0, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(198, 255, 0, 0.055) 1px, transparent 1px);
  background-size: 36px 36px;
}

.grid-bg--fade {
  -webkit-mask-image: radial-gradient(ellipse at top, black 20%, transparent 75%);
  mask-image: radial-gradient(ellipse at top, black 20%, transparent 75%);
}

.edge-cut {
  --cut: 48px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), 0 100%);
}

.edge-cut--top {
  clip-path: polygon(0 var(--cut), 100% 0, 100% 100%, 0 100%);
}

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

html.js [data-reveal-delay="1"] {
  transition-delay: 0.1s;
}

html.js [data-reveal-delay="2"] {
  transition-delay: 0.2s;
}

html.js [data-reveal-delay="3"] {
  transition-delay: 0.3s;
}

html.js [data-reveal-delay="4"] {
  transition-delay: 0.4s;
}

html.js [data-reveal-delay="5"] {
  transition-delay: 0.5s;
}

html.js [data-reveal-delay="6"] {
  transition-delay: 0.6s;
}

.hide-md {
  display: none;
}

@media (min-width: 769px) {
  .show-md {
    display: none !important;
  }
}

@media (max-width: 980px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-about {
    grid-column: 1 / -1;
  }

  .site-nav .nav-list a {
    padding: 0.4rem 0.82rem;
    font-size: 0.84rem;
  }

  .nav-status {
    display: none;
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --header-top-h: 60px;
    --header-nav-h: 0px;
  }

  .nav-toggle {
    display: flex;
  }

  .header-top-inner {
    padding-inline: 1.25rem;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 0.74rem;
  }

  .brand-cn {
    font-size: 1.05rem;
  }

  .brand-en {
    display: none;
  }

  .header-cta {
    padding: 0.52rem 0.95rem;
    font-size: 0.8rem;
  }

  .header-nav {
    position: fixed;
    top: var(--header-top-h);
    left: 0;
    right: 0;
    z-index: 999;
    background: rgba(8, 20, 40, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid transparent;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.42s ease, border-color 0.3s ease;
  }

  .header-nav[data-open] {
    max-height: calc(100vh - var(--header-top-h));
    overflow-y: auto;
    border-bottom-color: var(--glass-brd);
  }

  .header-nav-inner {
    padding-block: 0 1rem;
    min-height: 0;
    display: block;
  }

  .site-nav .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.2rem;
    padding-block: 0.5rem;
  }

  .site-nav .nav-list a {
    display: block;
    padding: 0.85rem 1rem;
    font-size: 1rem;
    border-radius: var(--radius);
  }

  .site-nav .nav-list a[aria-current="page"] {
    box-shadow: none;
  }

  #main-content {
    padding-top: var(--header-top-h);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.4rem;
    padding-block: 3rem 2rem;
  }

  .footer-about {
    grid-column: auto;
  }

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
    gap: 0.35rem;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
    margin-bottom: 2rem;
  }

  .section-anno {
    writing-mode: horizontal-tb;
    transform: none;
    letter-spacing: 0.18em;
    font-size: 0.72rem;
    opacity: 0.6;
    align-self: flex-start;
  }

  .edge-cut,
  .edge-cut--top {
    --cut: 24px;
  }
}

@media (max-width: 420px) {
  .header-cta {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
  }

  .header-actions {
    gap: 0.5rem;
  }

  .nav-toggle {
    width: 42px;
    height: 42px;
  }
}

@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;
  }

  .status-dot {
    animation: none;
  }

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

  .site-header,
  .site-footer,
  .card,
  .stat-card,
  .glass-card,
  .btn {
    transition: none;
  }

  .skip-link {
    transition: none;
  }
}