:root {
  --color-ink: #0B1D3A;
  --color-red: #E63946;
  --color-gold: #D4AF37;
  --color-teal: #2A9D8F;
  --color-ivory: #F5F7FA;
  --color-silver: #E0E0E0;
  --color-deep: #333333;
  --color-muted: #A5B2C8;
  --font-display: Impact, "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-pill: 999px;
  --container-wide: 1280px;
  --container-main: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--color-ink);
  background-image:
    radial-gradient(circle at 82% 8%, rgba(42, 157, 143, 0.08), transparent 34rem),
    radial-gradient(circle at 8% 34%, rgba(230, 57, 70, 0.05), transparent 30rem);
  color: var(--color-ivory);
  font-family: var(--font-body);
  line-height: 1.6;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

p,
ul,
ol,
figure {
  margin: 0;
}

a {
  color: var(--color-teal);
}

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

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

button {
  font: inherit;
  cursor: pointer;
}

address {
  font-style: normal;
}

::selection {
  background: var(--color-red);
  color: var(--color-ivory);
}

:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(100% - 2rem, var(--container-main));
  margin-inline: auto;
}

.container--narrow {
  max-width: 900px;
}

.section {
  padding-block: clamp(3.5rem, 9vw, 7rem);
}

.section--tight {
  padding-block: clamp(2rem, 4vw, 3.5rem);
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section-heading__text {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--color-ivory);
}

.annotation {
  flex: 0 0 auto;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.page-title {
  max-width: 15em;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3rem, 9vw, 6.5rem);
  line-height: 0.92;
  text-transform: uppercase;
  color: var(--color-ivory);
}

.page-title__sub {
  display: block;
  margin-top: 1.1rem;
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: none;
  color: var(--color-gold);
}

.page-lede {
  max-width: 42rem;
  margin-top: 1.5rem;
  font-size: 1.05rem;
  color: rgba(245, 247, 250, 0.75);
}

.breadcrumb {
  padding-block: 1rem;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--color-muted);
}

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

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

.breadcrumb__current {
  color: var(--color-ivory);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--color-ivory);
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s, transform 0.2s;
}

.btn--primary {
  background: var(--color-red);
  color: #fff;
}

.btn--primary:hover {
  background: #c92f3c;
  color: #fff;
  transform: translateY(-2px);
}

.btn--ghost {
  border-color: rgba(245, 247, 250, 0.32);
  color: var(--color-ivory);
}

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

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

.btn--gold:hover {
  background: #c7a330;
  color: var(--color-ink);
  transform: translateY(-2px);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  border: 1px solid rgba(42, 157, 143, 0.3);
  border-radius: 999px;
  background: rgba(42, 157, 143, 0.14);
  color: var(--color-teal);
  font-size: 0.8rem;
  font-weight: 500;
}

.trust-note {
  max-width: 42rem;
  margin: 1.5rem 0;
  padding: 0.9rem 1.2rem;
  border-left: 4px solid var(--color-gold);
  border-radius: 0 18px 18px 0;
  background: rgba(212, 175, 55, 0.08);
  color: rgba(245, 247, 250, 0.75);
  font-size: 0.9rem;
}

.grid {
  display: grid;
  gap: clamp(1.1rem, 3vw, 1.75rem);
}

.grid--split {
  grid-template-columns: 1.1fr 0.9fr;
}

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

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

.media-frame {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 12rem;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 1px solid rgba(245, 247, 250, 0.1);
  border-radius: 18px 36px 36px 36px;
  background:
    radial-gradient(circle at 75% 20%, rgba(212, 175, 55, 0.18), transparent 40%),
    linear-gradient(145deg, rgba(42, 157, 143, 0.2), rgba(11, 29, 58, 0.85));
  color: var(--color-muted);
}

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

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.8rem 1rem;
  font-size: 0.8rem;
  color: rgba(245, 247, 250, 0.75);
  background: linear-gradient(transparent, rgba(7, 18, 37, 0.9));
}

.media-frame--hero {
  aspect-ratio: 21 / 8;
  border-radius: 24px 48px 48px 48px;
}

.media-frame--wide {
  aspect-ratio: 16 / 6;
}

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

.media-frame--tall {
  aspect-ratio: 4 / 5;
}

.content-map {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.content-map__item {
  position: relative;
  overflow: hidden;
  padding: 1.4rem;
  border: 1px solid rgba(245, 247, 250, 0.08);
  border-radius: 14px 28px 28px 28px;
  background: linear-gradient(145deg, rgba(245, 247, 250, 0.08), rgba(245, 247, 250, 0.02));
}

.content-map__item::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46%;
  height: 46%;
  border-bottom-left-radius: 28px;
  background: linear-gradient(225deg, rgba(212, 175, 55, 0.14), transparent 60%);
  pointer-events: none;
}

.content-map__index {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  line-height: 1;
  color: var(--color-gold);
}

.content-map__title {
  margin-top: 1rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  text-transform: uppercase;
}

.content-map__desc {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.stat-block {
  position: relative;
  overflow: hidden;
  padding: 1.4rem 1.5rem;
  border: 1px solid rgba(245, 247, 250, 0.08);
  border-radius: 18px 32px 32px 32px;
  background: linear-gradient(145deg, #12254A, #091831);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.07),
    0 18px 36px rgba(2, 8, 20, 0.35);
}

.stat-block::before {
  content: "";
  position: absolute;
  left: 1.4rem;
  top: -2px;
  width: 3rem;
  height: 3px;
  border-radius: 999px;
  background: var(--color-red);
}

.stat-block__accent {
  width: 36px;
  height: 4px;
  border-radius: 999px;
  background: var(--color-red);
}

.stat-block__value {
  display: block;
  margin-top: 0.8rem;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.1;
  color: var(--color-gold);
}

.stat-block__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.tabs {
  margin-top: 1.5rem;
}

.tabs__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  border-bottom: 1px solid rgba(245, 247, 250, 0.15);
}

.tab-button {
  appearance: none;
  border: 0;
  border-bottom: 3px solid transparent;
  border-radius: 999px 999px 18px 18px;
  background: transparent;
  color: var(--color-muted);
  font: inherit;
  font-weight: 600;
  padding: 0.75rem 1.15rem;
  transition: color 0.2s, background-color 0.2s;
}

.tab-button:hover {
  background: rgba(245, 247, 250, 0.07);
  color: var(--color-ivory);
}

.tab-button[aria-selected="true"] {
  background: var(--color-ivory);
  border-bottom-color: var(--color-red);
  color: var(--color-ink);
}

.tabs__panel {
  padding-top: 1.6rem;
}

.tabs__panel[hidden] {
  display: none;
}

.index-row {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: 1rem;
  padding-block: 1rem;
  border-bottom: 1px solid rgba(245, 247, 250, 0.08);
}

.index-row__index {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  color: var(--color-gold);
}

.index-row__title {
  font-weight: 600;
}

.index-row__detail {
  margin-top: 0.2rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 200;
  padding: 0.8rem 1.2rem;
  border-radius: 999px;
  background: var(--color-gold);
  color: var(--color-ink);
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
  transform: translateY(-300%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 29, 58, 0.96);
  border-bottom: 1px solid rgba(245, 247, 250, 0.08);
  box-shadow: 0 18px 36px rgba(3, 8, 18, 0.28);
}

.site-header::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-red) 0 72px, var(--color-gold) 72px 168px, var(--color-teal) 168px 216px, transparent 216px);
}

.site-header__inner {
  position: relative;
  display: grid;
  gap: 0.85rem;
  width: min(100% - 2rem, var(--container-wide));
  margin-inline: auto;
  padding: 0.9rem 0 0.75rem;
}

.site-header__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--color-ivory);
  text-decoration: none;
}

.brand__symbol {
  position: relative;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  border-radius: 14px 20px 20px 20px;
  background: linear-gradient(135deg, var(--color-red), #b52b3a);
  box-shadow: 0 8px 24px rgba(230, 57, 70, 0.25);
  transform: rotate(-6deg);
}

.brand__symbol::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(245, 247, 250, 0.32);
  border-radius: 10px 14px 14px 14px;
}

.brand__symbol-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.22);
}

.brand__text {
  display: grid;
  gap: 0.12rem;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1;
  letter-spacing: 0.03em;
}

.brand__slogan {
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold);
  opacity: 0.92;
}

.nav-toggle {
  display: none;
  position: relative;
  z-index: 5;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.75rem 0.55rem 0.65rem;
  border: 1px solid rgba(245, 247, 250, 0.14);
  border-radius: 999px;
  background: rgba(245, 247, 250, 0.06);
  color: var(--color-ivory);
}

.nav-toggle__box {
  position: relative;
  width: 22px;
  height: 14px;
}

.nav-toggle__line {
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease, top 0.2s ease;
}

.nav-toggle__line:nth-child(1) {
  top: 0;
}

.nav-toggle__line:nth-child(2) {
  top: 6px;
}

.nav-toggle__line:nth-child(3) {
  top: 12px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  top: 6px;
  transform: rotate(-45deg);
}

.nav-toggle__label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-list__item {
  margin: 0;
}

.nav-link {
  display: block;
  padding: 0.55rem 0.85rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--color-ivory);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s, background-color 0.2s, border-color 0.2s;
}

.nav-link:hover {
  background: rgba(42, 157, 143, 0.12);
  color: var(--color-teal);
}

.nav-link[aria-current="page"] {
  background: rgba(212, 175, 55, 0.1);
  border-color: rgba(212, 175, 55, 0.42);
  color: var(--color-gold);
}

.nav-stamp {
  margin-left: auto;
  padding-left: 1rem;
  border-left: 1px solid rgba(245, 247, 250, 0.14);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--color-muted);
}

.site-footer {
  position: relative;
  overflow: hidden;
  background: #061226;
  border-top: 1px solid rgba(212, 175, 55, 0.4);
  color: rgba(245, 247, 250, 0.78);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -10rem;
  right: -8rem;
  width: 26rem;
  height: 26rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(42, 157, 143, 0.14), transparent 62%);
  pointer-events: none;
}

.site-footer__inner {
  position: relative;
  width: min(100% - 2rem, var(--container-wide));
  margin-inline: auto;
  padding: clamp(3rem, 7vw, 5rem) 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.7fr 0.95fr;
  gap: clamp(1.5rem, 4vw, 3rem);
}

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

.footer-col--intro {
  grid-column: span 1;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1;
  letter-spacing: 0.03em;
  color: var(--color-ivory);
}

.footer-tagline {
  display: block;
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.footer-trust {
  max-width: 34rem;
  margin-top: 1.2rem;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.66);
}

.footer-heading {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.footer-links {
  display: grid;
  gap: 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-link {
  color: rgba(245, 247, 250, 0.82);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--color-teal);
}

.footer-address {
  display: grid;
  gap: 0.6rem;
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: rgba(245, 247, 250, 0.72);
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding-top: 1.4rem;
  border-top: 1px solid rgba(245, 247, 250, 0.09);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: rgba(245, 247, 250, 0.55);
}

.footer-meta__left,
.footer-meta__right {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.footer-icp {
  color: rgba(245, 247, 250, 0.5);
}

@media (max-width: 1180px) {
  .nav-stamp {
    display: none;
  }
}

@media (max-width: 1023px) {
  .grid--split,
  .grid--stack {
    grid-template-columns: 1fr;
  }

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

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

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

  .footer-col--intro {
    grid-column: 1 / -1;
  }
}

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-link {
    padding: 0.8rem 0.9rem;
  }

  .nav-stamp {
    display: none;
  }
}

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

  .media-frame--hero,
  .media-frame--wide {
    aspect-ratio: 4 / 3;
  }

  .section-heading {
    align-items: flex-start;
    gap: 0.5rem;
  }

  .annotation {
    writing-mode: horizontal-tb;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  html {
    scroll-behavior: auto;
  }
}