:root {
  --c-primary: #0a1128;
  --c-secondary: #0d1b3e;
  --c-gold: #d4a843;
  --c-gold-light: #f0d68a;
  --c-emerald: #00c48c;
  --c-text: #f5f7fa;
  --c-text-dim: #9ba3b5;
  --c-line: rgba(212,168,67,0.4);
  --font-heading: "Archivo Black", "Noto Sans SC", sans-serif;
  --font-body: "Inter", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --header-h: 72px;
  --content-max: 1280px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 48px;
  --space-5: 96px;
  --text-base: 16px;
  --radius: 0;
  --shadow: 0 4px 20px rgba(0,0,0,0.3);
}

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

html {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.75;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--c-primary);
  color: var(--c-text);
  min-height: 100vh;
  font-weight: 300;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.2;
  color: var(--c-text);
  margin-bottom: 0.5em;
}

h1 { font-size: clamp(2.25rem, 6vw, 4rem); }
h2 { font-size: clamp(1.75rem, 4vw, 3rem); }
h3 { font-size: clamp(1.375rem, 3vw, 2rem); }
h4 { font-size: clamp(1.125rem, 2vw, 1.5rem); }

p {
  margin-bottom: 1em;
}

a {
  color: var(--c-gold-light);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--c-gold-light);
}

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

ul, ol {
  list-style: none;
}

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

:focus-visible {
  outline: 3px solid var(--c-gold);
  outline-offset: 2px;
}

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

.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;
}

#main-content {
  min-height: 70vh;
  padding-top: var(--header-h);
}

.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.section {
  padding: var(--space-5) 0;
}

.section--tight {
  padding: var(--space-4) 0;
}

.section-kicker {
  display: block;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 900;
  color: var(--c-text);
  position: relative;
  padding-left: 18px;
  margin-bottom: var(--space-3);
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background: var(--c-gold);
  transform: skewX(-15deg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-decoration: none;
  border: 1px solid var(--c-gold);
  background: transparent;
  color: var(--c-gold-light);
  cursor: pointer;
  transition: background 0.25s, color 0.25s, border-color 0.25s, transform 0.2s;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.btn:hover {
  background: var(--c-gold);
  color: var(--c-primary);
  border-color: var(--c-gold);
  transform: translateY(-2px);
}

.btn:focus-visible {
  outline: 3px solid var(--c-gold-light);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--c-gold);
  color: var(--c-primary);
}

.btn--primary:hover {
  background: var(--c-gold-light);
}

.btn--large {
  padding: 16px 40px;
  font-size: 16px;
}

.card {
  background: var(--c-secondary);
  border: 1px solid var(--c-line);
  padding: var(--space-3);
  position: relative;
  box-shadow: var(--shadow);
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--c-gold);
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}

.card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: 20px;
  height: 20px;
  border-top: 3px solid var(--c-gold);
  border-left: 3px solid var(--c-gold);
  pointer-events: none;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  background: rgba(212,168,67,0.15);
  border: 1px solid var(--c-line);
  color: var(--c-gold-light);
  white-space: nowrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  background: transparent;
  border: 1px solid var(--c-emerald);
  color: var(--c-emerald);
  border-radius: 0;
}

.badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: badge-pulse 1.6s infinite;
}

@keyframes badge-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.grid {
  display: grid;
  gap: var(--space-3);
}

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

.grid__item {
  min-width: 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: var(--space-2) 0;
  font-size: 13px;
  list-style: none;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--c-text-dim);
}

.breadcrumb__item + .breadcrumb__item::before {
  content: '/';
  color: var(--c-line);
  font-weight: 700;
}

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

.breadcrumb__item a:hover {
  color: var(--c-gold-light);
}

.breadcrumb__item[aria-current="page"] {
  color: var(--c-gold-light);
  font-weight: 600;
}

.media-frame {
  position: relative;
  overflow: hidden;
  background: var(--c-secondary);
  border: 1px solid var(--c-line);
}

.media-frame::before {
  content: '';
  display: block;
}

.media-frame--16-9::before { padding-top: 56.25%; }
.media-frame--4-3::before { padding-top: 75%; }
.media-frame--1-1::before { padding-top: 100%; }

.media-frame__img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

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

.media-frame__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--c-secondary) 0%, var(--c-primary) 100%);
  color: var(--c-text-dim);
  font-size: 14px;
  letter-spacing: 2px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.skip-link {
  position: fixed;
  top: -60px;
  left: var(--space-2);
  z-index: 2000;
  padding: 10px 24px;
  background: var(--c-gold);
  color: var(--c-primary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 0 0 6px 6px;
  transition: top 0.25s ease;
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  z-index: 1200;
  background: transparent;
  pointer-events: none;
}

.scroll-progress__bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--c-gold) 0%, var(--c-emerald) 100%);
  transition: width 0.08s linear;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  border-bottom: 1px solid transparent;
}

.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10,17,40,0.75) 0%, rgba(10,17,40,0.4) 60%, transparent 100%);
  pointer-events: none;
  z-index: -1;
  transition: opacity 0.35s ease;
}

.site-header.is-scrolled {
  background: rgba(10,17,40,0.94);
  border-bottom-color: var(--c-line);
  box-shadow: 0 4px 24px rgba(0,0,0,0.35);
}

.site-header.is-scrolled::before {
  opacity: 0;
}

.site-header__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-3);
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand:hover {
  text-decoration: none;
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--c-gold);
  color: var(--c-primary);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 1px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: background 0.25s;
}

.brand:hover .brand__mark {
  background: var(--c-gold-light);
}

.brand__name {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--c-text);
  position: relative;
  padding-left: 10px;
  line-height: 1.2;
  white-space: nowrap;
}

.brand__name::before {
  content: '';
  position: absolute;
  left: 0;
  top: 2px;
  bottom: 2px;
  width: 2px;
  background: var(--c-gold);
}

.site-nav__list {
  display: flex;
  gap: 4px;
  align-items: center;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.5px;
  color: var(--c-text);
  text-decoration: none;
  position: relative;
  transition: color 0.2s;
}

.site-nav__link::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background: var(--c-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.site-nav__link:hover {
  color: var(--c-gold-light);
}

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

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

.site-nav__index {
  font-size: 10px;
  font-weight: 700;
  color: var(--c-gold);
  vertical-align: super;
  line-height: 1;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 10px 8px;
  background: rgba(10,17,40,0.6);
  border: 1px solid var(--c-line);
  border-radius: 0;
  cursor: pointer;
  transition: background 0.25s;
}

.nav-toggle:hover {
  background: rgba(10,17,40,0.9);
}

.nav-toggle__bar {
  display: block;
  height: 2px;
  background: var(--c-text);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(8px) 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(-8px) rotate(-45deg);
}

.site-footer {
  background: var(--c-secondary);
  border-top: 1px solid var(--c-line);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--c-gold) 25%, var(--c-gold) 75%, transparent 100%);
  opacity: 0.5;
}

.site-footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding: 56px 0 40px;
}

.site-footer__brand {
  padding-right: 24px;
}

.brand--footer {
  margin-bottom: 16px;
}

.site-footer__desc {
  font-size: 14px;
  color: var(--c-text-dim);
  line-height: 1.8;
  margin-bottom: 12px;
}

.site-footer__trust {
  font-size: 12px;
  color: rgba(155,163,181,0.7);
  border-left: 2px solid var(--c-line);
  padding-left: 12px;
  margin-top: 16px;
  line-height: 1.6;
}

.site-footer__heading {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

.site-footer__heading::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: var(--c-gold);
}

.site-footer__list {
  list-style: none;
}

.site-footer__link {
  display: inline-block;
  color: var(--c-text-dim);
  text-decoration: none;
  font-size: 14px;
  line-height: 2.3;
  transition: color 0.2s, transform 0.2s;
}

.site-footer__link:hover {
  color: var(--c-gold-light);
  transform: translateX(4px);
}

.site-footer__contact {
  list-style: none;
}

.site-footer__contact-item {
  display: flex;
  flex-direction: column;
  margin-bottom: 12px;
  padding-left: 12px;
  border-left: 2px solid var(--c-line);
}

.site-footer__contact-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 2px;
}

.site-footer__contact-text {
  font-size: 14px;
  color: var(--c-text);
  word-break: break-all;
}

.site-footer__time {
  font-size: 12px;
  color: var(--c-text-dim);
  margin-top: 8px;
  padding-left: 12px;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid rgba(212,168,67,0.15);
  padding: 20px 0;
  font-size: 13px;
  color: var(--c-text-dim);
}

.site-footer__copyright {
  margin: 0;
}

.site-footer__icp {
  margin: 0;
  letter-spacing: 0.5px;
}

.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 950;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--c-gold);
  border: none;
  color: var(--c-primary);
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s, background 0.2s;
}

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

.to-top:hover {
  background: var(--c-gold-light);
  transform: translateY(-4px);
}

.to-top:focus-visible {
  outline: 3px solid var(--c-text);
  outline-offset: 2px;
}

.to-top__arrow {
  display: inline-block;
  line-height: 1;
}

@media (max-width: 1024px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

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

  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--c-primary);
    border-bottom: 1px solid var(--c-line);
    box-shadow: 0 16px 40px rgba(0,0,0,0.45);
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    padding: 16px var(--space-3);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    z-index: 999;
  }

  .site-nav[data-open="true"] {
    transform: translateY(0);
  }

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

  .site-nav__item {
    border-bottom: 1px solid rgba(212,168,67,0.15);
  }

  .site-nav__item:last-child {
    border-bottom: none;
  }

  .site-nav__link {
    display: flex;
    align-items: center;
    padding: 14px 8px;
    font-size: 16px;
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__index {
    font-size: 12px;
    margin-right: 4px;
  }

  .site-header__inner {
    padding: 0 var(--space-2);
  }

  .brand__mark {
    width: 34px;
    height: 34px;
    font-size: 12px;
  }

  .brand__name {
    font-size: 18px;
  }

  .scroll-progress {
    height: 2px;
  }
}

@media (max-width: 640px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 0 32px;
  }

  .site-footer__brand {
    padding-right: 0;
  }

  .site-footer__bottom {
    flex-direction: column;
    text-align: center;
  }

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

  .to-top {
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
  }

  .section {
    padding: var(--space-4) 0;
  }
}

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

  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .card,
  .btn,
  .brand__mark {
    transition: none;
  }

  .card:hover,
  .btn:hover {
    transform: none;
  }
}