/* ===== Reset & Variables ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: #102A43;
  background-color: #F5F7FA;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: 'Archivo Black', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  line-height: 1.2;
  margin: 0 0 1rem;
  color: #0B1D3A;
}

p {
  margin: 0 0 1rem;
}

a {
  color: #4A6FA5;
  text-decoration: none;
}

a:hover {
  color: #0B1D3A;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

figure {
  margin: 0;
}

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

:root {
  --clr-deep: #0B1D3A;
  --clr-gold: #D4AF37;
  --clr-orange: #FF6B35;
  --clr-green: #00C896;
  --clr-blue: #4A6FA5;
  --clr-off-white: #F5F7FA;
  --clr-ink: #102A43;
  --clr-muted-gold: #B8956A;
  --clr-gray: #8A9BA5;
  --clr-success: #2E7D32;

  --font-heading: 'Archivo Black', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;

  --nav-rail-w: 220px;
  --header-h: 72px;
  --content-max: 1240px;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;

  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 20px;
}

/* ===== Shared Utilities ===== */
.container {
  width: min(100%, var(--content-max));
  margin: 0 auto;
  padding-left: var(--space-3);
  padding-right: var(--space-3);
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-gold);
}

.eyebrow::before {
  content: "";
  width: 1.5rem;
  height: 2px;
  background: var(--clr-orange);
  flex-shrink: 0;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 900;
  line-height: 1.15;
  color: var(--clr-deep);
  margin-bottom: var(--space-2);
}

.score-number {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 0.9;
  color: var(--clr-deep);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.tag {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.4;
  border-radius: 999px;
  background: rgba(212, 175, 55, 0.15);
  color: var(--clr-muted-gold);
  border: 1px solid rgba(212, 175, 55, 0.3);
}

.tag--live {
  background: rgba(0, 200, 150, 0.12);
  color: var(--clr-green);
  border-color: rgba(0, 200, 150, 0.3);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--clr-deep);
  background-color: var(--clr-gold);
  border: 2px solid var(--clr-gold);
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  background-color: var(--clr-orange);
  border-color: var(--clr-orange);
  color: var(--clr-deep);
  transform: translateY(-2px);
}

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

.btn--ghost {
  background-color: transparent;
  color: var(--clr-gold);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background-color: rgba(212, 175, 55, 0.12);
  border-color: var(--clr-gold);
  color: var(--clr-gold);
  transform: none;
}

.btn--small {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* ===== Breadcrumbs ===== */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.375rem;
  padding: 0;
  margin: 0 0 var(--space-4);
  font-size: 0.875rem;
  color: var(--clr-gray);
  list-style: none;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.375rem;
  color: var(--clr-muted-gold);
}

.breadcrumbs a {
  color: var(--clr-blue);
  text-decoration: none;
}

.breadcrumbs a:hover,
.breadcrumbs a:focus-visible {
  color: var(--clr-gold);
  text-decoration: underline;
}

.breadcrumbs [aria-current="page"] {
  color: var(--clr-deep);
  font-weight: 600;
}

/* ===== Grid ===== */
.grid {
  display: grid;
  gap: var(--space-3);
}

.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(2, 1fr);
  }
}

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

/* ===== Card ===== */
.card {
  background: var(--clr-off-white);
  border: 1px solid rgba(180, 149, 106, 0.25);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(11, 29, 58, 0.06);
  padding: var(--space-3);
}

/* ===== Image Frames ===== */
.frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--clr-deep) 0%, var(--clr-blue) 100%);
  border-radius: var(--radius-md);
}

.frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(225deg, rgba(212, 175, 55, 0.22) 0%, transparent 55%),
    repeating-linear-gradient(-45deg, transparent 0 6px, rgba(255, 255, 255, 0.04) 6px 7px, transparent 7px 12px);
  pointer-events: none;
}

.frame img,
.frame picture {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

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

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

.frame--square {
  aspect-ratio: 1 / 1;
}

/* ===== Main Content ===== */
#main-content {
  scroll-margin-top: calc(var(--header-h) + 0.75rem);
}

#main-content:focus {
  outline: none;
}

/* ===== Skip Link ===== */
.skip-link {
  position: fixed;
  top: -4rem;
  left: 1rem;
  z-index: 999;
  display: inline-block;
  padding: 0.75rem 1.25rem;
  background: var(--clr-gold);
  color: var(--clr-deep);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: 0 0 6px 6px;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus-visible {
  top: 0;
  outline: 3px solid var(--clr-orange);
  outline-offset: 2px;
}

/* ===== Site Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 300;
  min-height: var(--header-h);
  background: var(--clr-deep);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
}

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

.site-header__bar::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 2.5rem;
  background: repeating-linear-gradient(-45deg, transparent 0 3px, rgba(212, 175, 55, 0.07) 3px 4px);
  pointer-events: none;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--clr-off-white);
  text-decoration: none;
}

.site-header__brand:hover {
  color: var(--clr-off-white);
}

.site-header__brand-symbol {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--clr-deep);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.25), transparent 60%), var(--clr-gold);
  border-radius: 14px 4px 14px 4px;
  transform: rotate(-6deg);
}

.site-header__brand-txt {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.site-header__brand-name {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--clr-off-white);
}

.site-header__tagline {
  margin-top: 2px;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--clr-gray);
}

.site-header__live {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--clr-off-white);
  background: rgba(0, 200, 150, 0.08);
  border: 1px solid rgba(0, 200, 150, 0.3);
  border-radius: 999px;
}

.live-dot {
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--clr-green);
}

.live-text {
  letter-spacing: 0.06em;
}

.site-header__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: 8px;
  cursor: pointer;
}

.site-header__toggle-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 20px;
  height: 16px;
}

.site-header__toggle-line {
  display: block;
  height: 2px;
  border-radius: 1px;
  background: var(--clr-gold);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

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

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

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

/* ===== Site Nav ===== */
.site-nav {
  position: fixed;
  top: var(--header-h);
  right: 0;
  bottom: 0;
  z-index: 400;
  display: flex;
  flex-direction: column;
  width: min(320px, 85vw);
  min-height: 0;
  padding: var(--space-3) 0 0;
  background:
    radial-gradient(circle at 30% 70%, rgba(212, 175, 55, 0.08), transparent 40%),
    linear-gradient(180deg, var(--clr-ink), var(--clr-deep));
  border-left: 1px solid rgba(212, 175, 55, 0.25);
  box-shadow: -8px 0 28px rgba(0, 0, 0, 0.3);
  overflow-y: auto;
  transform: translateX(100%);
  visibility: hidden;
  transition: transform 0.3s ease, visibility 0.3s ease;
}

.site-nav[data-open] {
  transform: translateX(0);
  visibility: visible;
}

.site-nav__header {
  flex-shrink: 0;
  padding: 0 var(--space-3) var(--space-2);
}

.site-nav__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--clr-muted-gold);
}

.site-nav__eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 1px;
  background: var(--clr-muted-gold);
  opacity: 0.5;
}

.site-nav__list {
  flex: 1;
  min-height: 0;
  margin: 0;
  padding: var(--space-1) var(--space-2) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  list-style: none;
  overflow-y: auto;
}

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

.site-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5625rem;
  padding: 0.625rem 0.875rem;
  border-radius: 6px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--clr-off-white);
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.site-nav__link::before {
  content: "";
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  border: 2px solid var(--clr-muted-gold);
  transform: rotate(45deg);
  box-sizing: border-box;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  color: var(--clr-gold);
  background: rgba(212, 175, 55, 0.08);
}

.site-nav__link:hover::before,
.site-nav__link:focus-visible::before {
  background: var(--clr-orange);
  border-color: var(--clr-orange);
  transform: rotate(45deg) scale(1.15);
}

.site-nav__link[aria-current="page"] {
  color: var(--clr-gold);
  background: linear-gradient(90deg, rgba(212, 175, 55, 0.16), transparent 85%);
}

.site-nav__link[aria-current="page"]::before {
  background: var(--clr-gold);
  border-color: var(--clr-gold);
}

.site-nav__index {
  min-width: 1.375rem;
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1;
  color: var(--clr-muted-gold);
  letter-spacing: 0.06em;
}

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

.site-nav__aside {
  flex-shrink: 0;
  padding: var(--space-3) var(--space-2) var(--space-4);
  border-top: 1px solid rgba(212, 175, 55, 0.15);
}

.site-nav__aside-title {
  margin: 0 0 0.75rem;
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-gray);
}

.site-nav__aside-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.site-nav__aside-item {
  list-style: none;
}

.site-nav__aside-link {
  display: block;
  padding: 0.375rem 0.625rem;
  font-size: 0.8125rem;
  color: var(--clr-blue);
  text-decoration: none;
  border-radius: 4px;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.site-nav__aside-link:hover,
.site-nav__aside-link:focus-visible {
  color: var(--clr-gold);
  background: rgba(212, 175, 55, 0.06);
}

.rail-progress {
  position: fixed;
  top: 0;
  right: 0;
  width: 3px;
  height: 0%;
  z-index: 510;
  background: linear-gradient(180deg, var(--clr-gold), var(--clr-orange));
  opacity: 0.85;
  pointer-events: none;
  display: none;
}

/* ===== Site Footer ===== */
.site-footer {
  position: relative;
  background: var(--clr-ink);
  color: var(--clr-off-white);
  padding: var(--space-5) var(--space-3) var(--space-3);
  border-top: 3px solid var(--clr-gold);
}

.site-footer::after {
  content: "";
  position: absolute;
  top: -3px;
  right: 0;
  width: 35%;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-orange), transparent);
  pointer-events: none;
}

.site-footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.site-footer__brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 0.75rem;
  text-decoration: none;
}

.site-footer__brand-symbol {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--clr-deep);
  background: var(--clr-gold);
  border-radius: 12px 3px 12px 3px;
  transform: rotate(-6deg);
}

.site-footer__brand-name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--clr-off-white);
}

.site-footer__tagline {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  color: var(--clr-gray);
  letter-spacing: 0.06em;
}

.site-footer__trust {
  max-width: 28rem;
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--clr-muted-gold);
}

.site-footer__title {
  margin: 0 0 1rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-gold);
}

.site-footer__links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer__links li {
  margin-bottom: 0.5rem;
  list-style: none;
}

.site-footer__links a {
  font-size: 0.875rem;
  color: var(--clr-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

.site-footer__links a:hover,
.site-footer__links a:focus-visible {
  color: var(--clr-gold);
  text-decoration: underline;
}

.site-footer__contact .site-footer__links li {
  font-size: 0.875rem;
  color: var(--clr-gray);
  line-height: 1.6;
}

.site-footer__note {
  margin: 1rem 0 0;
  padding-left: 0.75rem;
  font-size: 0.8125rem;
  color: var(--clr-gray);
  border-left: 2px solid var(--clr-muted-gold);
}

.site-footer__bottom {
  max-width: var(--content-max);
  margin: var(--space-4) auto 0;
  padding: var(--space-3) 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: var(--clr-gray);
}

.site-footer__copyright,
.site-footer__icp {
  margin: 0;
}

/* ===== Focus Visible ===== */
:focus-visible {
  outline: 2px solid var(--clr-orange);
  outline-offset: 2px;
}

.site-nav a:focus-visible,
.site-footer a:focus-visible,
.site-header__toggle:focus-visible {
  outline-color: var(--clr-gold);
}

/* ===== Reduced Motion ===== */
@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;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .live-dot {
    animation: live-pulse 1.6s ease-in-out infinite;
  }
}

@keyframes live-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(0, 200, 150, 0.5);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(0, 200, 150, 0);
  }
}

/* ===== Responsive ===== */
@media (max-width: 767px) {
  .site-header__tagline {
    display: none;
  }

  .site-header__live {
    display: none;
  }

  .site-footer {
    padding-top: var(--space-4);
  }
}

@media (min-width: 1024px) {
  body {
    padding-right: var(--nav-rail-w);
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__live {
    display: inline-flex;
  }

  .site-nav {
    top: 0;
    bottom: 0;
    width: var(--nav-rail-w);
    padding-top: var(--space-3);
    transform: none;
    visibility: visible;
    box-shadow: none;
    transition: none;
  }

  .rail-progress {
    display: block;
  }

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

  .site-footer__brand {
    grid-column: span 6;
  }

  .site-footer__col {
    grid-column: span 2;
  }

  .site-footer__contact {
    grid-column: span 2;
  }
}