/* ============================================================
   PG电玩城 · Site Kit 共享样式
   深海电玩大厅 / 赛博朋克编辑部版式
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  line-height: 1.75;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-soft-white);
  background-color: var(--c-deep-sea);
  background-image:
    linear-gradient(rgba(230, 240, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(230, 240, 255, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#main-content {
  flex: 1 0 auto;
  width: 100%;
}

main {
  flex: 1 0 auto;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

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

/* ---------- CSS Variables ---------- */
:root {
  --c-deep-sea: #0B1D3A;
  --c-deep-sea-light: #132A4A;
  --c-neon-purple: #B14BFF;
  --c-electric-green: #00E5A0;
  --c-gold: #FFD700;
  --c-soft-white: #E6F0FF;
  --c-blue-gray: #8FA3BF;
  --c-warning-orange: #FF8C42;
  --c-deep-black-blue: #05101F;
  --c-dark-night-purple: #1A0B2E;

  --font-headline: Impact, "Arial Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: -apple-system, "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  --font-serif: Georgia, "Noto Serif SC", "Songti SC", serif;

  --container-max: 1180px;
  --radius: 3px;
  --transition: 0.3s ease;
}

/* ---------- Layout ---------- */
.container {
  width: min(var(--container-max), 100% - 2.5rem);
  margin-inline: auto;
}

/* ---------- Accessible Utilities ---------- */
.visually-hidden {
  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: absolute;
  top: 0;
  left: -999px;
  z-index: 10000;
  background: var(--c-electric-green);
  color: var(--c-deep-black-blue);
  font-weight: 700;
  font-size: 0.875rem;
  padding: 0.65rem 1.25rem;
  border-radius: 0 0 var(--radius) 0;
  transition: left 0.2s ease;
}

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

/* ---------- Scroll Progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 9999;
  background: rgba(230, 240, 255, 0.08);
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--c-neon-purple) 0%, var(--c-electric-green) 100%);
  box-shadow: 0 0 12px rgba(177, 75, 255, 0.6);
}

/* ---------- Header ---------- */
.site-header {
  position: relative;
  background: linear-gradient(180deg, var(--c-deep-black-blue) 0%, var(--c-deep-sea) 100%);
  border-bottom: 1px solid rgba(177, 75, 255, 0.25);
  z-index: 100;
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  right: 0;
  width: 36%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--c-neon-purple) 45%, var(--c-electric-green) 100%);
  box-shadow: 0 0 8px rgba(177, 75, 255, 0.45);
}

.site-header__masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  column-gap: 1rem;
  padding-top: 1.75rem;
  padding-bottom: 1rem;
}

.site-header__meta {
  justify-self: start;
  margin: 0;
  font-family: var(--font-serif);
  font-size: 0.7rem;
  font-style: italic;
  letter-spacing: 0.18em;
  line-height: 1.5;
  color: var(--c-blue-gray);
  border-left: 2px solid var(--c-neon-purple);
  padding-left: 0.75rem;
  max-width: 160px;
}

.site-brand {
  justify-self: center;
  text-align: center;
  display: inline-block;
  text-decoration: none;
  line-height: 1.1;
}

.site-brand__text {
  display: inline-flex;
  align-items: baseline;
  white-space: nowrap;
}

.site-brand__en {
  font-family: Impact, "Arial Black", sans-serif;
  font-style: italic;
  font-weight: 900;
  font-size: 2.5rem;
  letter-spacing: -1px;
  line-height: 1;
  color: var(--c-electric-green);
  text-shadow:
    0 0 16px rgba(0, 229, 160, 0.55),
    0 0 40px rgba(0, 229, 160, 0.2),
    0 2px 0 var(--c-deep-black-blue);
  margin-right: 0.06em;
}

.site-brand__cn {
  font-family: var(--font-body);
  font-weight: 900;
  font-size: 1.9rem;
  font-style: normal;
  letter-spacing: 0.15em;
  line-height: 1.35;
  color: var(--c-soft-white);
  text-shadow:
    0 0 20px rgba(177, 75, 255, 0.45),
    0 2px 0 var(--c-deep-black-blue);
  text-indent: 0.12em;
}

.site-brand__sub {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-serif);
  font-size: 0.62rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--c-blue-gray);
  text-indent: 0.3em;
}

.site-header__actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.site-header__cta {
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.site-header__nav-wrap {
  padding-bottom: 0.85rem;
}

.site-nav__list {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.site-nav__item {
  position: relative;
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 0.45em 0.9em;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-soft-white);
  transition: color 0.25s ease;
}

.site-nav__link::after {
  content: '';
  position: absolute;
  left: 0.9em;
  right: 0.9em;
  bottom: 0.1em;
  height: 2px;
  background: linear-gradient(90deg, var(--c-neon-purple), var(--c-electric-green));
  opacity: 0;
  transform: scaleX(0.5);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.site-nav__link:hover {
  color: var(--c-neon-purple);
  text-shadow: 0 0 12px rgba(177, 75, 255, 0.4);
}

.site-nav__link:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

.site-nav__link[aria-current="page"] {
  color: var(--c-electric-green);
  text-shadow: 0 0 12px rgba(0, 229, 160, 0.45);
}

.site-nav__link[aria-current="page"]::after {
  opacity: 1;
  transform: scaleX(1);
}

/* Mobile nav toggle */
.site-nav__toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(230, 240, 255, 0.25);
  border-radius: var(--radius);
  background: rgba(11, 29, 58, 0.85);
  flex-shrink: 0;
  transition: border-color 0.25s ease;
}

.site-nav__toggle:hover {
  border-color: var(--c-neon-purple);
}

.site-nav__toggle-line {
  position: absolute;
  left: 12px;
  right: 12px;
  top: 50%;
  height: 2px;
  background: var(--c-soft-white);
  border-radius: 1px;
  transform: translateY(-50%);
  transition: background 0.2s ease;
}

.site-nav__toggle-line::before,
.site-nav__toggle-line::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--c-soft-white);
  border-radius: 1px;
  transition: transform 0.3s ease, top 0.3s ease, bottom 0.3s ease;
}

.site-nav__toggle-line::before {
  top: -7px;
}

.site-nav__toggle-line::after {
  top: 7px;
}

.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-line {
  background: transparent;
}

.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-line::before {
  top: 0;
  transform: rotate(45deg);
  background: var(--c-electric-green);
}

.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-line::after {
  top: 0;
  transform: rotate(-45deg);
  background: var(--c-electric-green);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.65em 1.5em;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease, color 0.25s ease, background 0.25s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: linear-gradient(135deg, var(--c-neon-purple) 0%, #7B2FBF 100%);
  color: #FFFFFF;
  box-shadow: 0 0 20px rgba(177, 75, 255, 0.3);
}

.btn--primary:hover {
  box-shadow: 0 0 32px rgba(177, 75, 255, 0.5);
  border-color: rgba(255, 255, 255, 0.35);
}

.btn--ghost {
  border-color: rgba(143, 163, 191, 0.6);
  color: var(--c-soft-white);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--c-neon-purple);
  color: var(--c-neon-purple);
  box-shadow: 0 0 18px rgba(177, 75, 255, 0.2);
}

.btn--gold {
  background: linear-gradient(135deg, var(--c-gold) 0%, #F0A500 100%);
  color: var(--c-deep-black-blue);
  font-weight: 800;
  box-shadow: 0 0 18px rgba(255, 215, 0, 0.3);
}

.btn--gold:hover {
  box-shadow: 0 0 30px rgba(255, 215, 0, 0.5);
}

.btn--cta {
  padding: 0.5em 1.1em;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, var(--c-neon-purple) 0%, #7B2FBF 100%);
  color: #FFFFFF;
  box-shadow: 0 0 16px rgba(177, 75, 255, 0.35);
}

.btn--cta:hover {
  box-shadow: 0 0 28px rgba(177, 75, 255, 0.55);
}

/* ---------- Tags ---------- */
.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.4;
  padding: 0.3em 0.85em;
  border-radius: 2px;
  letter-spacing: 0.05em;
  border: 1px solid transparent;
}

.tag--v4 {
  background: rgba(0, 229, 160, 0.12);
  color: var(--c-electric-green);
  border-color: rgba(0, 229, 160, 0.4);
}

.tag--legacy {
  background: rgba(255, 140, 66, 0.12);
  color: var(--c-warning-orange);
  border-color: rgba(255, 140, 66, 0.4);
}

.tag--gold {
  background: rgba(255, 215, 0, 0.1);
  color: var(--c-gold);
  border-color: rgba(255, 215, 0, 0.35);
}

.tag--purple {
  background: rgba(177, 75, 255, 0.12);
  color: var(--c-neon-purple);
  border-color: rgba(177, 75, 255, 0.35);
}

/* ---------- Cards ---------- */
.card {
  display: flex;
  flex-direction: column;
  background: var(--c-deep-sea-light);
  border: 1px solid rgba(230, 240, 255, 0.08);
  border-radius: 4px;
  padding: 1.5rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.card:hover {
  border-color: rgba(177, 75, 255, 0.5);
  box-shadow: 0 0 30px rgba(177, 75, 255, 0.15);
  transform: translateY(-2px);
}

.card__title {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
  color: var(--c-soft-white);
}

.card__desc {
  margin: 0 0 1.25rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--c-blue-gray);
  flex-grow: 1;
}

.card__link {
  align-self: flex-start;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--c-neon-purple);
  letter-spacing: 0.05em;
  transition: color 0.2s ease;
}

.card__link:hover {
  color: var(--c-electric-green);
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

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

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

@media (min-width: 768px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- Section ---------- */
.section {
  padding: 3.5rem 0;
}

.section--tight {
  padding: 2rem 0;
}

.section__header {
  margin-bottom: 2rem;
  max-width: 720px;
}

.section__kicker {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-neon-purple);
}

.section__title {
  margin: 0;
  font-family: var(--font-headline);
  font-weight: 900;
  font-style: italic;
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: -0.5px;
  text-transform: uppercase;
  color: var(--c-soft-white);
  text-shadow: 0 0 15px rgba(177, 75, 255, 0.3);
}

.section__desc {
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-blue-gray);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  padding: 1rem 0 0;
  font-size: 0.78rem;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  color: var(--c-blue-gray);
}

.breadcrumb__item:not(:last-child)::after {
  content: '/';
  margin: 0 0.6rem;
  color: rgba(143, 163, 191, 0.5);
}

.breadcrumb__link {
  color: var(--c-blue-gray);
  transition: color 0.2s ease;
}

.breadcrumb__link:hover {
  color: var(--c-electric-green);
}

.breadcrumb__item[aria-current="page"] {
  color: var(--c-soft-white);
}

/* ---------- Page Hero ---------- */
.page-hero {
  position: relative;
  padding: 4rem 0 3rem;
  border-bottom: 1px solid rgba(177, 75, 255, 0.18);
  background:
    radial-gradient(ellipse at 85% 0%, rgba(26, 11, 46, 0.8) 0%, transparent 55%),
    linear-gradient(180deg, rgba(11, 29, 58, 0.35) 0%, rgba(11, 29, 58, 0.9) 100%);
}

.page-hero__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-headline);
  font-weight: 900;
  font-style: italic;
  font-size: 2.75rem;
  line-height: 1.15;
  letter-spacing: -1px;
  text-transform: uppercase;
  color: var(--c-soft-white);
  text-shadow:
    0 0 20px rgba(177, 75, 255, 0.4),
    0 3px 0 var(--c-deep-black-blue);
}

.page-hero__lead {
  margin: 0;
  max-width: 640px;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--c-blue-gray);
}

/* ---------- Image Frame ---------- */
.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  min-height: 160px;
  background: var(--c-deep-sea-light);
  border: 1px solid rgba(230, 240, 255, 0.1);
  border-radius: 4px;
}

.img-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(177, 75, 255, 0.1) 0%, transparent 45%);
  pointer-events: none;
}

/* ---------- Prose ---------- */
.prose {
  max-width: 68ch;
  font-size: 0.9375rem;
  line-height: 1.95;
  color: rgba(230, 240, 255, 0.85);
}

.prose h2 {
  margin: 2.5rem 0 1rem;
  font-size: 1.5rem;
  color: var(--c-soft-white);
  font-family: var(--font-headline);
  font-style: italic;
  font-weight: 900;
  letter-spacing: -0.5px;
}

.prose h3 {
  margin: 2rem 0 0.75rem;
  font-size: 1.2rem;
  color: var(--c-soft-white);
}

.prose p {
  margin-bottom: 1.25rem;
}

.prose ul,
.prose ol {
  margin: 0 0 1.25rem 1.5rem;
}

.prose ul {
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin-bottom: 0.35rem;
}

.prose a {
  color: var(--c-electric-green);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

.prose a:hover {
  color: var(--c-neon-purple);
}

.prose strong {
  color: var(--c-soft-white);
  font-weight: 700;
}

/* ---------- Divider ---------- */
.divider {
  height: 1px;
  border: none;
  margin: 2rem 0;
  background: linear-gradient(90deg, rgba(177, 75, 255, 0.4) 0%, rgba(0, 229, 160, 0.3) 50%, transparent 92%);
}

/* ---------- Glow Line ---------- */
.glow-line {
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--c-neon-purple) 30%, var(--c-electric-green) 65%, transparent 100%);
  box-shadow: 0 0 12px rgba(177, 75, 255, 0.4);
  margin: 0 0 2.5rem;
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  background: linear-gradient(180deg, var(--c-deep-sea) 0%, var(--c-deep-black-blue) 45%, var(--c-deep-black-blue) 100%);
  border-top: 1px solid rgba(177, 75, 255, 0.2);
  margin-top: auto;
}

.site-footer__glow {
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, rgba(177, 75, 255, 0.6) 25%, rgba(0, 229, 160, 0.6) 60%, transparent 100%);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding: 3rem 0 2.5rem;
}

@media (min-width: 768px) {
  .site-footer__inner {
    grid-template-columns: 1.2fr 1fr 1.3fr;
    gap: 3rem;
  }
}

.site-footer__col--brand {
  max-width: 420px;
}

.site-footer__brand {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-style: italic;
  font-weight: 900;
  letter-spacing: -0.5px;
  color: var(--c-soft-white);
  text-shadow: 0 0 18px rgba(177, 75, 255, 0.45);
  margin-bottom: 0.75rem;
}

.site-footer__desc {
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--c-blue-gray);
  margin-bottom: 1rem;
}

.site-footer__trust {
  font-size: 0.75rem;
  line-height: 1.7;
  color: rgba(0, 229, 160, 0.85);
  border-left: 2px solid var(--c-electric-green);
  padding-left: 0.75rem;
}

.site-footer__heading {
  margin: 0 0 1rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-neon-purple);
}

.site-footer__nav,
.site-footer__contact {
  margin: 0;
  padding: 0;
}

.site-footer__nav li {
  margin-bottom: 0.45rem;
}

.site-footer__nav a {
  font-size: 0.8125rem;
  color: var(--c-soft-white);
  transition: color 0.2s ease;
}

.site-footer__nav a:hover {
  color: var(--c-electric-green);
}

.site-footer__contact li {
  margin-bottom: 0.6rem;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--c-blue-gray);
}

.site-footer__support {
  margin-top: 1rem;
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--c-blue-gray);
  border-top: 1px solid rgba(230, 240, 255, 0.08);
  padding-top: 0.85rem;
}

.site-footer__bottom {
  border-top: 1px solid rgba(230, 240, 255, 0.08);
  padding: 1.25rem 0 1.5rem;
}

.site-footer__bottom-inner {
  display: grid;
  grid-template-columns: 1fr;
  justify-items: center;
  gap: 0.6rem;
  text-align: center;
}

@media (min-width: 768px) {
  .site-footer__bottom-inner {
    grid-template-columns: 1fr auto 1fr;
    justify-items: start;
    text-align: left;
    gap: 1rem;
  }
}

.site-footer__copy {
  font-size: 0.75rem;
  color: var(--c-blue-gray);
}

.site-footer__icp {
  font-size: 0.75rem;
  color: var(--c-blue-gray);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
}

@media (min-width: 768px) {
  .site-footer__legal {
    justify-self: end;
  }
}

.site-footer__legal li {
  margin: 0;
}

.site-footer__legal a {
  font-size: 0.75rem;
  color: var(--c-blue-gray);
  transition: color 0.2s ease;
}

.site-footer__legal a:hover {
  color: var(--c-electric-green);
}

/* ---------- Reveal Animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal="visible"] {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Focus Visible ---------- */
:focus-visible {
  outline: 3px solid var(--c-electric-green);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- Reduced Motion ---------- */
@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;
  }

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

/* ---------- Responsive Header / Nav ---------- */
@media (max-width: 767px) {
  .site-header__masthead {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
  }

  .site-header__meta {
    display: none;
  }

  .site-brand__en {
    font-size: 2rem;
  }

  .site-brand__cn {
    font-size: 1.6rem;
    letter-spacing: 0.12em;
  }

  .site-brand__sub {
    font-size: 0.55rem;
    letter-spacing: 0.32em;
  }

  .site-header__cta {
    font-size: 0.7rem;
    padding: 0.45em 0.85em;
  }

  .site-nav__toggle {
    display: block;
  }

  .site-header__nav-wrap {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 200;
    background: rgba(11, 29, 58, 0.98);
    border-top: 2px solid var(--c-neon-purple);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
    padding: 0.75rem 1rem 1rem;
  }

  .site-header__nav-wrap[data-open] {
    display: block;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__link {
    display: block;
    padding: 0.7rem 0.5rem;
    border-bottom: 1px solid rgba(230, 240, 255, 0.06);
    font-size: 0.95rem;
  }

  .site-nav__link::after {
    left: 0.5rem;
    right: 0.5rem;
    bottom: 0;
  }

  .site-nav__link[aria-current="page"] {
    background: rgba(0, 229, 160, 0.06);
  }

  .page-hero {
    padding: 2.5rem 0 2rem;
  }

  .page-hero__title {
    font-size: 2.1rem;
  }

  .section {
    padding: 2.5rem 0;
  }

  .section__title {
    font-size: 1.6rem;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .site-header__masthead {
    padding-top: 1.25rem;
    padding-bottom: 0.75rem;
  }

  .site-brand__en {
    font-size: 2.2rem;
  }

  .site-brand__cn {
    font-size: 1.7rem;
  }

  .site-nav__link {
    padding: 0.4em 0.7em;
    font-size: 0.82rem;
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .site-footer__col--contact {
    grid-column: 1 / -1;
  }
}