:root {
  --c-night: #0B1D3A;
  --c-night-2: #0E2A4E;
  --c-blue: #1B3A5C;
  --c-gold: #D4AF37;
  --c-gold-soft: #E6CE7A;
  --c-action: #FF6B35;
  --c-action-soft: #FFB08A;
  --c-paper: #F5F7FA;
  --c-ink: #10202B;
  --c-muted: #6A7A89;
  --font-display: "Impact", "Montserrat", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Roboto", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-note: "Noto Serif SC", "Songti SC", SimSun, serif;
  --header-h: 64px;
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --shadow-1: 0 12px 30px rgba(11, 29, 58, 0.08);
  --shadow-2: 0 24px 60px rgba(11, 29, 58, 0.18);
  --transition: 0.3s ease;
  --max-w: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding-top: var(--header-h);
  background: var(--c-paper);
  color: var(--c-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

ul[class], ol[class] {
  list-style: none;
  margin: 0;
  padding: 0;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: transparent;
  cursor: pointer;
}

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

main {
  display: block;
}

::selection {
  background: var(--c-gold);
  color: var(--c-night);
}

#main-content {
  min-height: 70vh;
  outline: none;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--c-action);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 200;
  padding: 0.65rem 1.2rem;
  background: var(--c-action);
  color: var(--c-ink);
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  border-radius: 0 0 12px 12px;
  box-shadow: var(--shadow-2);
  transition: top 0.25s ease;
}

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

.main-wrap {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 3rem);
}

.section {
  padding-block: clamp(3rem, 8vw, 6rem);
}

.section-narrow {
  max-width: 850px;
}

.eyebrow {
  display: block;
  margin-bottom: 0.75rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.74rem;
  line-height: 1.2;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.section-title {
  margin-bottom: 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--c-night);
}

.section-head-light .section-title {
  color: var(--c-paper);
}

.section-note {
  max-width: 52ch;
  font-size: 1rem;
  color: var(--c-muted);
}

.note-vertical {
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: 0.2em;
  font-size: 0.72rem;
  color: var(--c-muted);
  text-transform: uppercase;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(11, 29, 58, 0.86);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.18);
}

.header-inner {
  position: relative;
  max-width: var(--max-w);
  height: 100%;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

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

.brand-mark {
  position: relative;
  display: inline-block;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--c-gold), var(--c-action) 72%);
  box-shadow: 0 8px 20px rgba(11, 29, 58, 0.35), inset 0 0 0 2px rgba(255, 255, 255, 0.18);
}

.brand-mark::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 10px;
  background: var(--c-night-2);
  transform: skewX(-12deg);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.brand-mark::after {
  content: "";
  position: absolute;
  left: 14px;
  top: 18px;
  width: 18px;
  height: 9px;
  border-radius: 999px;
  background: var(--c-gold);
  transform: rotate(-12deg);
  box-shadow: 7px 0 0 var(--c-action), 14px 0 0 var(--c-gold);
}

.brand-word {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  column-gap: 0.28rem;
  line-height: 1;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.22rem;
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--c-paper);
}

.brand-suffix {
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--c-gold);
}

.brand-version {
  display: block;
  width: 100%;
  margin-top: 0.28rem;
  font-family: var(--font-body);
  font-size: 0.58rem;
  line-height: 1;
  letter-spacing: 0.3em;
  color: var(--c-gold-soft);
  opacity: 0.85;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.6vw, 1.5rem);
}

.site-nav a {
  position: relative;
  padding: 0.8rem 0.1rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: rgba(245, 247, 250, 0.88);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0.3rem;
  height: 2px;
  background: var(--c-action);
  transition: right 0.25s ease;
}

.site-nav a:hover {
  color: var(--c-paper);
}

.site-nav a:hover::after {
  right: 0;
}

.site-nav a[aria-current="page"] {
  color: var(--c-gold);
}

.site-nav a[aria-current="page"]::after {
  right: 0;
  background: linear-gradient(90deg, var(--c-gold), var(--c-action));
}

.nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(245, 247, 250, 0.25);
  border-radius: 12px;
  background: transparent;
}

.nav-toggle span {
  position: absolute;
  left: 11px;
  right: 11px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-paper);
  transition: top 0.25s ease, transform 0.25s ease, opacity 0.2s ease;
}

.nav-toggle span:nth-child(1) {
  top: 14px;
}

.nav-toggle span:nth-child(2) {
  top: 20px;
}

.nav-toggle span:nth-child(3) {
  top: 26px;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  top: 20px;
  transform: rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  top: 20px;
  transform: rotate(-45deg);
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  pointer-events: none;
}

.scroll-progress [data-scroll-fill] {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--c-gold), var(--c-action));
  transform: scaleX(0);
  transform-origin: 0% 50%;
  transition: transform 120ms linear;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.85rem 1.6rem;
  border: 2px solid transparent;
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.92rem;
  line-height: 1.2;
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

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

.btn-primary {
  background: var(--c-gold);
  color: var(--c-night);
  box-shadow: 0 10px 25px rgba(212, 175, 55, 0.25);
}

.btn-primary:hover {
  background: var(--c-gold-soft);
  box-shadow: 0 14px 30px rgba(212, 175, 55, 0.35);
}

.btn-action {
  background: var(--c-action);
  color: var(--c-paper);
  box-shadow: 0 10px 25px rgba(255, 107, 53, 0.25);
}

.btn-action:hover {
  background: #ff824f;
  box-shadow: 0 14px 30px rgba(255, 107, 53, 0.35);
}

.btn-ghost {
  border-color: rgba(245, 247, 250, 0.4);
  color: var(--c-paper);
}

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

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: rgba(212, 175, 55, 0.15);
  color: var(--c-gold);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.72rem;
  line-height: 1.4;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.tag-solid {
  background: var(--c-gold);
  color: var(--c-night);
}

.tag-action {
  background: var(--c-action);
  color: var(--c-paper);
}

.card {
  padding: clamp(1.25rem, 2vw, 2rem);
  border: 1px solid rgba(27, 58, 92, 0.12);
  border-radius: var(--radius-md);
  background: var(--c-paper);
  box-shadow: var(--shadow-1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.card-dark {
  background: linear-gradient(145deg, var(--c-night-2), var(--c-blue));
  border: none;
  color: var(--c-paper);
}

.card-dark:hover {
  transform: translateY(-4px);
}

.card-gold {
  background: linear-gradient(145deg, var(--c-gold), var(--c-gold-soft));
  border: none;
  color: var(--c-night);
}

.card-gold:hover {
  transform: translateY(-4px);
}

.grid {
  display: grid;
  gap: clamp(1rem, 2vw, 2rem);
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-12 {
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.col-span-8 {
  grid-column: span 8;
}

.col-span-7 {
  grid-column: span 7;
}

.col-span-5 {
  grid-column: span 5;
}

.col-span-4 {
  grid-column: span 4;
}

.col-span-3 {
  grid-column: span 3;
}

.editorial-grid {
  display: grid;
  grid-template-columns: minmax(0, 8fr) minmax(0, 2fr) minmax(0, 2fr);
  gap: clamp(1.5rem, 3vw, 3rem);
}

.rail-note {
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: 0.22em;
  font-size: 0.72rem;
  color: var(--c-muted);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1.5rem 0;
  list-style: none;
  margin: 0;
  font-size: 0.85rem;
  color: var(--c-muted);
}

.breadcrumb a {
  color: var(--c-muted);
  text-decoration: none;
}

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

.breadcrumb li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--c-gold);
  opacity: 0.7;
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  background: var(--c-night-2);
  box-shadow: var(--shadow-1);
}

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

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.22), transparent 60%);
  opacity: 0.6;
  pointer-events: none;
}

.art-tile {
  position: relative;
  overflow: hidden;
  min-height: 220px;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--c-night-2), var(--c-blue));
  isolation: isolate;
}

.art-tile::before {
  content: "";
  position: absolute;
  width: 140%;
  aspect-ratio: 1;
  top: -40%;
  left: 40%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.55), rgba(255, 107, 53, 0.2) 45%, transparent 70%);
  z-index: -1;
}

.art-tile::after {
  content: "";
  position: absolute;
  inset: 18%;
  border: 1px solid rgba(245, 247, 250, 0.25);
  border-radius: 40%;
  transform: rotate(25deg);
}

.site-footer {
  margin-top: clamp(4rem, 10vw, 8rem);
  background-color: var(--c-night);
  background-image:
    linear-gradient(rgba(245, 247, 250, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 247, 250, 0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  color: var(--c-paper);
}

.footer-grid {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 4vw, 3rem) 2rem;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.1fr;
  gap: clamp(2rem, 5vw, 4rem);
}

.footer-grid::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(1rem, 4vw, 3rem);
  right: clamp(1rem, 4vw, 3rem);
  height: 3px;
  background: linear-gradient(90deg, var(--c-action) 0%, var(--c-gold) 40%, transparent 90%);
}

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

.footer-lockup {
  margin-bottom: 1.2rem;
}

.footer-lockup .brand-mark {
  width: 44px;
  height: 44px;
  flex-basis: 44px;
}

.footer-lockup .brand-word {
  display: grid;
  gap: 0.3rem;
}

.footer-title {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.6rem;
  line-height: 1;
  letter-spacing: 0.05em;
  color: var(--c-paper);
}

.footer-title-en {
  display: block;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.6rem;
  line-height: 1;
  letter-spacing: 0.4em;
  color: var(--c-gold);
}

.footer-desc {
  max-width: 42ch;
  color: rgba(245, 247, 250, 0.65);
  font-size: 0.9rem;
  line-height: 1.8;
}

.footer-trust {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--c-gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(27, 58, 92, 0.4);
  color: var(--c-gold-soft);
  font-size: 0.82rem;
  line-height: 1.7;
}

.footer-nav,
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-heading {
  margin-bottom: 0.85rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.78rem;
  line-height: 1.2;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.footer-nav a {
  width: fit-content;
  color: rgba(245, 247, 250, 0.75);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-nav a:hover {
  color: var(--c-action);
  padding-left: 0.3rem;
}

.footer-contact-line {
  margin: 0;
  color: rgba(245, 247, 250, 0.7);
  font-size: 0.88rem;
  line-height: 1.7;
}

.footer-contact-line strong {
  display: block;
  margin-bottom: 0.2rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.72rem;
  line-height: 1.2;
  letter-spacing: 0.15em;
  color: var(--c-gold);
}

.footer-legal-heading {
  margin-top: 1rem;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
}

.footer-legal a {
  color: rgba(245, 247, 250, 0.7);
  font-size: 0.82rem;
  text-decoration: none;
}

.footer-legal a:hover {
  color: var(--c-action);
}

.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.2rem clamp(1rem, 4vw, 3rem) 1.5rem;
  border-top: 1px solid rgba(245, 247, 250, 0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  color: rgba(245, 247, 250, 0.55);
  font-size: 0.82rem;
}

.footer-bottom p {
  margin: 0;
}

.help-float {
  position: fixed;
  right: clamp(1rem, 3vw, 2.2rem);
  bottom: clamp(1rem, 3vw, 2.2rem);
  z-index: 80;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--c-gold), var(--c-action));
  color: var(--c-night);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: 0 15px 35px rgba(255, 107, 53, 0.4);
  transition: transform 0.25s ease;
}

.help-float span {
  display: block;
  transform: translateY(-1px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.7rem;
  line-height: 1;
}

.help-float:hover {
  transform: translateY(-5px) scale(1.04);
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s ease var(--reveal-delay, 0ms), transform 0.5s ease var(--reveal-delay, 0ms);
}

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

@media (max-width: 960px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: span 2;
  }

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

  .rail-note {
    writing-mode: horizontal-tb;
  }

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

  .grid-12 {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .col-span-8,
  .col-span-7,
  .col-span-5,
  .col-span-4,
  .col-span-3 {
    grid-column: span 6;
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem;
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 1rem;
    background: rgba(14, 42, 78, 0.98);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .site-nav a {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid rgba(245, 247, 250, 0.08);
    border-radius: 0.5rem;
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-brand {
    grid-column: span 1;
  }

  .grid-2,
  .grid-3,
  .grid-12 {
    grid-template-columns: 1fr;
  }

  .col-span-8,
  .col-span-7,
  .col-span-5,
  .col-span-4,
  .col-span-3 {
    grid-column: span 1;
  }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }
}

@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;
  }

  .js [data-reveal],
  .js [data-reveal][data-revealed] {
    opacity: 1 !important;
    transform: none !important;
  }

  .scroll-progress [data-scroll-fill] {
    transition: none;
  }
}