/* ========== RESET & BASE ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  margin: 0;
  font-family: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", "SimSun", serif;
  font-size: 16px;
  line-height: 1.7;
  color: #0F1F3D;
  background-color: #F5F7FA;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: #3E7CB1;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

a:hover { color: #0F1F3D; }

:focus-visible {
  outline: 2px solid #D8A02F;
  outline-offset: 3px;
  border-radius: 2px;
}

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

::selection {
  background-color: #D8A02F;
  color: #0F1F3D;
}

/* ========== CSS VARS ========== */
:root {
  --color-night: #0F1F3D;
  --color-white: #F5F7FA;
  --color-pure-white: #FFFFFF;
  --color-gold: #D8A02F;
  --color-red: #C23B2E;
  --color-glacier: #3E7CB1;
  --color-cloud: #8B9BB4;
  --color-tsampa: #E8DCC8;
  --color-text: #0F1F3D;
  --color-text-invert: #F5F7FA;
  --font-heading: "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", "SimSun", serif;
  --font-data: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --container-width: 1280px;
  --space-xl: 96px;
  --space-lg: 72px;
  --space-md: 48px;
  --space-sm: 24px;
  --header-height: 72px;
  --border-width: 1px;
  --border-color: #8B9BB4;
}

/* ========== SKIP LINK ========== */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 2000;
  background: var(--color-gold);
  color: var(--color-night);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  padding: 8px 16px;
  border-radius: 0 0 6px 0;
}

.skip-link:focus {
  left: 0;
  color: var(--color-night);
}

/* ========== SITE CONTAINER ========== */
.site-container {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ========== HEADER ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-night);
  color: var(--color-text-invert);
  border-bottom: 2px solid var(--color-gold);
  min-height: var(--header-height);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  min-height: var(--header-height);
}

.brand-mark {
  display: flex;
  align-items: baseline;
  gap: 10px;
  line-height: 1.2;
  padding: 12px 0;
  color: var(--color-text-invert);
}

.brand-mark__name {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 24px;
  letter-spacing: -1px;
  color: var(--color-text-invert);
}

.brand-mark__rule {
  display: inline-block;
  width: 1px;
  height: 18px;
  background-color: var(--color-gold);
  transform: rotate(15deg);
}

.brand-mark__motto {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--color-cloud);
  text-transform: uppercase;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav__link {
  position: relative;
  display: inline-block;
  padding: 10px 14px;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #C9D4E6;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.main-nav__link:hover {
  color: var(--color-white);
  background-color: rgba(216, 160, 47, 0.08);
}

.main-nav__link[aria-current="page"] {
  color: var(--color-gold);
  border-bottom-color: var(--color-gold);
}

.main-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: -2px;
  height: 2px;
  background-color: var(--color-gold);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background-color: rgba(216, 160, 47, 0.1);
  border: 1px solid var(--color-gold);
  border-radius: 4px;
  color: var(--color-gold);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
}

.nav-toggle__box {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle__line {
  display: block;
  width: 16px;
  height: 2px;
  background-color: var(--color-gold);
}

/* ========== FOOTER ========== */
.site-footer {
  background-color: var(--color-night);
  color: #C9D4E6;
  margin-top: var(--space-lg);
  border-top: 2px solid var(--color-gold);
  padding-top: 56px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand__name {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 28px;
  letter-spacing: -1px;
  color: var(--color-pure-white);
}

.footer-brand__motto {
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--color-gold);
  margin-bottom: 16px;
}

.footer-trust {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-cloud);
  max-width: 400px;
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(139, 155, 180, 0.3);
}

.footer-link {
  display: block;
  color: #C9D4E6;
  font-size: 15px;
  line-height: 2.2;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-link:hover {
  color: var(--color-gold);
  padding-left: 6px;
}

.footer-contact-line {
  display: block;
  font-size: 14px;
  line-height: 2;
  color: #C9D4E6;
}

.footer-contact-line a {
  color: #C9D4E6;
}

.footer-contact-line a:hover {
  color: var(--color-gold);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  padding-bottom: 24px;
  border-top: 1px solid rgba(139, 155, 180, 0.2);
  font-size: 13px;
  font-family: var(--font-data);
  color: var(--color-cloud);
}

/* ========== PAGE LAYOUT ========== */
.page-layout {
  min-height: calc(100vh - var(--header-height));
}

#main-content {
  display: block;
  outline: none;
  scroll-margin-top: var(--header-height);
}

/* ========== SECTION BLOCK ========== */
.section-block {
  position: relative;
  padding-top: var(--space-lg);
  padding-bottom: var(--space-lg);
}

.section-block--white {
  background-color: var(--color-white);
}

.section-block--night {
  background-color: var(--color-night);
  color: var(--color-text-invert);
}

.section-block--tsampa {
  background-color: var(--color-tsampa);
}

.section-index {
  position: absolute;
  top: 16px;
  left: 0;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-gold);
  letter-spacing: 2px;
  border-left: 3px solid var(--color-gold);
  padding-left: 10px;
}

/* ========== GRID ========== */
.grid-row {
  display: grid;
  gap: 32px;
  margin-top: var(--space-sm);
}

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

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

/* ========== TYPOGRAPHY ========== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.5px;
  color: var(--color-night);
}

.section-block--night h1,
.section-block--night h2,
.section-block--night h3 {
  color: var(--color-text-invert);
}

.heading-xl {
  font-size: clamp(40px, 8vw, 80px);
  letter-spacing: -2px;
  line-height: 1.1;
  margin-bottom: var(--space-sm);
}

.heading-lg {
  font-size: clamp(28px, 5vw, 48px);
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.heading-md {
  font-size: clamp(22px, 3vw, 32px);
  margin-bottom: 16px;
}

.section-kicker {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 12px;
}

.lead-text {
  font-size: 19px;
  line-height: 1.8;
  color: var(--color-night);
  max-width: 680px;
}

.section-block--night .lead-text {
  color: #C9D4E6;
}

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 4px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 1px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  text-decoration: none;
}

.btn--gold {
  background-color: var(--color-gold);
  color: var(--color-night);
  border: 1px solid var(--color-gold);
}

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

.btn--outline-light {
  border: 1px solid #8B9BB4;
  color: #C9D4E6;
}

.btn--outline-light:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background-color: rgba(216, 160, 47, 0.05);
}

/* ========== BREADCRUMBS ========== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-family: var(--font-heading);
  font-size: 13px;
  color: var(--color-cloud);
}

.breadcrumb__link {
  color: var(--color-glacier);
  text-decoration: none;
}

.breadcrumb__link:hover {
  color: var(--color-gold);
}

.breadcrumb__sep {
  color: var(--color-cloud);
  user-select: none;
}

.breadcrumb__current {
  color: var(--color-night);
  font-weight: 700;
}

/* ========== DATA TABLE ========== */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-data);
  font-size: 14px;
  background-color: var(--color-pure-white);
  border: 1px solid var(--color-cloud);
  border-radius: 4px;
  overflow: hidden;
}

.data-table thead {
  background-color: var(--color-night);
  color: var(--color-text-invert);
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.data-table th,
.data-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(139, 155, 180, 0.3);
}

.data-table tbody tr:hover {
  background-color: rgba(216, 160, 47, 0.05);
}

.data-table__live {
  color: var(--color-red);
  font-weight: 700;
}

/* ========== TAG LABEL ========== */
.tag-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  border-radius: 2px;
  text-transform: uppercase;
}

.tag-label--report {
  background-color: rgba(194, 59, 46, 0.12);
  border: 1px solid var(--color-red);
  color: var(--color-red);
}

.tag-label--live {
  background-color: rgba(194, 59, 46, 0.15);
  color: var(--color-red);
}

.tag-label--info {
  background-color: rgba(62, 124, 177, 0.1);
  border: 1px solid var(--color-glacier);
  color: var(--color-glacier);
}

/* ========== KEYWORDS BAR ========== */
.keywords-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-lg);
}

.keywords-bar__item {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-night);
  padding: 6px 16px;
  border: 1px solid var(--color-cloud);
  border-radius: 2px;
  transition: all 0.2s ease;
}

.keywords-bar__item:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background-color: rgba(216, 160, 47, 0.05);
}

/* ========== IMAGE FRAME ========== */
.feature-image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--color-tsampa);
  border: 1px solid var(--color-cloud);
  overflow: hidden;
  border-radius: 4px;
}

.feature-image--tall {
  aspect-ratio: 4 / 5;
}

.feature-image--portrait {
  aspect-ratio: 3 / 4;
}

.feature-image__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--color-cloud);
  background-image:
    linear-gradient(rgba(139, 155, 180, 0.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139, 155, 180, 0.2) 1px, transparent 1px);
  background-size: 24px 24px;
}

.image-frame {
  border: 1px solid var(--color-cloud);
  padding: 8px;
  background-color: var(--color-pure-white);
}

/* ========== SHARE DIVIDER ========== */
.share-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: var(--space-md) 0;
  color: var(--color-cloud);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 2px;
}

.share-divider::before,
.share-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background-image: linear-gradient(90deg, var(--color-cloud) 50%, transparent 50%);
  background-size: 8px 1px;
}

/* ========== PROGRESS BAR ========== */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background-color: var(--color-gold);
  z-index: 2000;
  pointer-events: none;
  transition: width 0.1s ease-out;
}

/* ========== BACK TOP ========== */
.back-top-button {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background-color: var(--color-night);
  border: 1px solid var(--color-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
  z-index: 1000;
}

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

.back-top-button:hover {
  background-color: var(--color-gold);
  color: var(--color-night);
}

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

[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  
  .grid-cols-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --space-xl: 64px;
    --space-lg: 48px;
    --space-md: 32px;
    --space-sm: 20px;
  }

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 20px 0 24px;
    gap: 0;
    border-top: 1px solid rgba(216, 160, 47, 0.2);
    margin-top: 0;
  }

  .main-nav[data-open] {
    display: flex;
  }

  .main-nav__link {
    padding: 16px 12px;
    border-bottom: 1px solid rgba(139, 155, 180, 0.2);
    font-size: 16px;
    width: 100%;
    text-align: left;
  }

  .main-nav__link[aria-current="page"] {
    background-color: rgba(216, 160, 47, 0.08);
    border-left: 4px solid var(--color-gold);
  }

  .brand-mark__motto {
    display: none;
  }

  .brand-mark__name {
    font-size: 22px;
  }

  .grid-cols-2,
  .grid-cols-3,
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .data-table th,
  .data-table td {
    padding: 12px 10px;
    font-size: 13px;
  }

  .back-top-button {
    bottom: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 480px) {
  .site-container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .heading-xl {
    font-size: 32px;
  }

  .heading-lg {
    font-size: 24px;
  }

  .btn {
    padding: 10px 20px;
    font-size: 14px;
  }
}

/* ========== 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;
    transform: none;
    transition: none;
  }
}

/* ========== UTILITIES ========== */
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 48px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 48px; }
.py-0 { padding-top: 0; padding-bottom: 0; }
.py-1 { padding-top: 24px; padding-bottom: 24px; }
.py-2 { padding-top: 48px; padding-bottom: 48px; }
.py-3 { padding-top: 72px; padding-bottom: 72px; }