:root {
  --c-navy: #0A2240;
  --c-gold: #D4AF37;
  --c-orange: #FF6A00;
  --c-paper: #F7F3E8;
  --c-ink: #1B1B1B;
  --c-gray: #6B6B6B;
  --c-line: #E5E0D8;
  --c-glass: rgba(255, 255, 255, 0.85);
  --side-w: 17rem;
  --header-h: 4.5rem;
  --max-w: 80rem;
  --radius: 1rem;
  --shadow: 0 8px 24px rgba(10, 34, 64, 0.12);
  --shadow-hover: 0 18px 40px rgba(10, 34, 64, 0.18);
  --font-display: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--c-paper);
  background-image: radial-gradient(rgba(10, 34, 64, 0.045) 1px, transparent 1px);
  background-size: 22px 22px;
  color: var(--c-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
}

h1, h2, h3 {
  margin: 0;
  color: var(--c-navy);
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.15;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  color: inherit;
  font: inherit;
  cursor: pointer;
}

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

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

:focus-visible {
  outline: 3px solid var(--c-orange);
  outline-offset: 3px;
  border-radius: 3px;
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 2000;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  background: var(--c-orange);
  color: #fff;
  font-weight: 800;
  transform: translateY(-300%);
  transition: transform 0.2s ease;
}

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

.site-header {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  width: var(--side-w);
  padding: 1.5rem 1.25rem 1rem;
  background-color: var(--c-navy);
  background-image:
    linear-gradient(150deg, rgba(10, 34, 64, 0.98), rgba(10, 34, 64, 0.94) 55%, rgba(13, 42, 78, 0.92)),
    radial-gradient(circle at 80% 12%, rgba(255, 106, 0, 0.4), transparent 42%),
    radial-gradient(circle at 5% 100%, rgba(212, 175, 55, 0.28), transparent 45%);
  border-right: 1px solid rgba(212, 175, 55, 0.25);
  color: var(--c-paper);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(115deg, transparent 65%, rgba(212, 175, 55, 0.18) 65.5%, transparent 67%);
}

.header-bar,
.side-nav,
.rail-meta {
  position: relative;
  z-index: 1;
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  color: var(--c-paper);
}

.brand-svg {
  width: auto;
  height: 2.6rem;
}

.brand-svg__accent {
  fill: var(--c-orange);
}

.brand-svg__gold {
  fill: var(--c-gold);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid rgba(247, 243, 232, 0.35);
  border-radius: 999px;
  background: transparent;
  color: var(--c-paper);
}

.nav-toggle__box {
  position: relative;
  width: 1.25rem;
  height: 1rem;
}

.nav-toggle__bar {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease, top 0.2s ease;
}

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

.nav-toggle__bar:nth-child(2) {
  top: 0.45rem;
}

.nav-toggle__bar:nth-child(3) {
  top: 0.9rem;
}

.nav-toggle.is-open {
  border-color: var(--c-gold);
}

.nav-toggle.is-open .nav-toggle__bar:nth-child(1) {
  top: 0.45rem;
  transform: rotate(45deg);
}

.nav-toggle.is-open .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open .nav-toggle__bar:nth-child(3) {
  top: 0.45rem;
  transform: rotate(-45deg);
}

.nav-toggle__text {
  font-size: 0.85rem;
  font-weight: 700;
}

.side-nav {
  margin-top: 2rem;
}

.nav-list {
  display: grid;
  gap: 0.3rem;
}

.nav-link {
  display: block;
  padding: 0.625rem 0.75rem;
  border-left: 3px solid transparent;
  border-radius: 0 0.5rem 0.5rem 0;
  color: #dce4ed;
  font-weight: 600;
  line-height: 1.4;
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
}

.nav-link:hover {
  padding-left: 1rem;
  border-left-color: var(--c-gold);
  background: rgba(212, 175, 55, 0.14);
  color: #fff;
}

.nav-link[aria-current="page"] {
  border-left-color: var(--c-orange);
  background: rgba(212, 175, 55, 0.16);
  box-shadow: inset 0 0 0 1px rgba(212, 175, 55, 0.25);
  color: #fff;
}

.rail-meta {
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(212, 175, 55, 0.2);
}

.rail-meta__line {
  color: rgba(247, 243, 232, 0.72);
  font-size: 0.78rem;
  line-height: 1.55;
}

.rail-meta__line + .rail-meta__line {
  margin-top: 0.35rem;
}

.rail-meta__status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.85rem;
  padding: 0.35rem 0.8rem;
  border: 1px solid rgba(212, 175, 55, 0.45);
  border-radius: 999px;
  color: var(--c-paper);
  font-size: 0.8rem;
  font-weight: 700;
}

.rail-meta__dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--c-gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.25);
}

#main-content {
  display: block;
  min-height: 70vh;
  margin-left: var(--side-w);
}

.page-container {
  width: 100%;
  max-width: calc(var(--max-w) - var(--side-w));
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 3.5rem);
}

.section {
  padding-block: clamp(2rem, 5vw, 4.5rem);
}

.section + .section {
  border-top: 1px solid var(--c-line);
}

.section-header {
  max-width: 52rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--c-orange);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.eyebrow::before {
  content: "";
  width: 2rem;
  height: 2px;
  background: var(--c-gold);
}

.section-title {
  margin-top: 0.5rem;
  font-size: clamp(2rem, 5vw, 4rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.section-desc {
  margin-top: 0.8rem;
  max-width: 46rem;
  color: var(--c-gray);
  font-size: 1.05rem;
  line-height: 1.8;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.75rem 1.4rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  line-height: 1.2;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

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

.btn:active {
  transform: none;
}

.btn--primary {
  background: var(--c-orange);
  box-shadow: 0 10px 20px rgba(255, 106, 0, 0.28);
  color: #fff;
}

.btn--primary:hover {
  background: #e45f00;
  box-shadow: 0 14px 28px rgba(255, 106, 0, 0.38);
}

.btn--ghost {
  border-color: var(--c-navy);
  background: transparent;
  color: var(--c-navy);
}

.btn--ghost:hover {
  background: rgba(10, 34, 64, 0.06);
}

.btn--gold {
  background: var(--c-gold);
  box-shadow: 0 10px 20px rgba(212, 175, 55, 0.25);
  color: var(--c-navy);
}

.badge {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: 999px;
  background: rgba(212, 175, 55, 0.14);
  color: #826a20;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.4;
}

.badge--gold {
  border-color: transparent;
  background: linear-gradient(135deg, var(--c-gold), #b8912b);
  color: #fff;
}

.badge--orange {
  border-color: rgba(255, 106, 0, 0.3);
  background: rgba(255, 106, 0, 0.12);
  color: var(--c-orange);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  color: var(--c-gray);
  font-size: 0.9rem;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--c-line);
}

.breadcrumb__item a {
  color: var(--c-navy);
  font-weight: 600;
}

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

.breadcrumb__item a[aria-current="page"] {
  color: var(--c-gray);
  font-weight: 400;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  gap: 1.5rem;
}

.card-grid--stagger {
  align-items: start;
}

.card-grid--stagger .card:nth-child(even) {
  margin-top: 2rem;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 4px 12px rgba(10, 34, 64, 0.06);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 175, 55, 0.45);
  box-shadow: var(--shadow-hover);
}

.card--accent {
  border-top: 4px solid var(--c-orange);
}

.card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--c-navy);
  background-image:
    linear-gradient(135deg, rgba(212, 175, 55, 0.3), transparent 50%),
    radial-gradient(circle at 75% 25%, rgba(255, 106, 0, 0.45), transparent 45%);
}

.card__media::after {
  content: attr(data-caption);
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: rgba(10, 34, 64, 0.76);
  color: var(--c-paper);
  font-size: 0.75rem;
}

.card__media img,
.media-slot img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
}

.card__meta {
  color: var(--c-gray);
  font-size: 0.8rem;
}

.card__title {
  color: var(--c-navy);
  font-size: 1.15rem;
  line-height: 1.25;
}

.card__text {
  color: var(--c-gray);
  font-size: 0.92rem;
  line-height: 1.65;
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
  color: var(--c-orange);
  font-weight: 700;
  font-size: 0.9rem;
}

.card__link::after {
  content: "↗";
}

.card__link:hover {
  color: #d85a00;
}

.media-slot {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius);
  background-color: var(--c-navy);
  background-image:
    linear-gradient(135deg, rgba(212, 175, 55, 0.3), transparent 50%),
    radial-gradient(circle at 75% 25%, rgba(255, 106, 0, 0.45), transparent 45%);
}

.media-slot::after {
  content: attr(data-label);
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  background: rgba(10, 34, 64, 0.76);
  color: var(--c-paper);
  font-size: 0.75rem;
}

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

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
  padding: 1rem;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: rgba(10, 34, 64, 0.045);
}

[data-filter-trigger] {
  padding: 0.5rem 1rem;
  border: 1px solid var(--c-navy);
  border-radius: 999px;
  background: transparent;
  color: var(--c-navy);
  font-size: 0.9rem;
  font-weight: 700;
}

[data-filter-trigger].is-active,
[data-filter-trigger][aria-pressed="true"] {
  background: var(--c-navy);
  border-color: var(--c-navy);
  color: var(--c-paper);
}

[data-filter-target].is-filter-hidden {
  display: none;
}

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

body.nav-lock {
  overflow: hidden;
}

.site-footer {
  margin-left: var(--side-w);
  border-top: 4px solid var(--c-gold);
  background: var(--c-navy);
  color: #dce4ed;
}

.footer-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 2.5rem;
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 3.5rem clamp(1rem, 4vw, 3.5rem);
}

.footer-column,
.footer-column--brand,
.footer-column--broad {
  min-width: 0;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--c-paper);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 900;
}

.footer-brand__mark {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 0.45rem;
  background: linear-gradient(135deg, var(--c-gold), var(--c-orange));
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
  transform: skewX(-8deg);
}

.footer-brand__name {
  font-family: var(--font-display);
}

.footer-about {
  max-width: 24rem;
  margin-top: 0.9rem;
  color: rgba(247, 243, 232, 0.72);
  font-size: 0.95rem;
  line-height: 1.7;
}

.footer-title {
  margin-bottom: 1rem;
  color: var(--c-gold);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.footer-list {
  display: grid;
  gap: 0.6rem;
}

.footer-link {
  color: #dce4ed;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--c-orange);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-contact,
.footer-trust,
.footer-address {
  margin-top: 0.8rem;
  color: rgba(247, 243, 232, 0.72);
  font-size: 0.88rem;
  line-height: 1.7;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 1.2rem clamp(1rem, 4vw, 3.5rem);
  border-top: 1px solid rgba(212, 175, 55, 0.22);
}

.footer-copy,
.footer-icp {
  color: rgba(247, 243, 232, 0.6);
  font-size: 0.82rem;
}

@media (min-width: 981px) and (max-width: 1120px) {
  :root {
    --side-w: 14.5rem;
  }

  .brand-svg {
    height: 2.4rem;
  }

  .nav-link {
    font-size: 0.93rem;
  }
}

@media (max-width: 980px) {
  :root {
    --side-w: 0px;
  }

  .site-header {
    position: sticky;
    top: 0;
    right: 0;
    left: 0;
    flex-direction: row;
    align-items: center;
    width: 100%;
    height: auto;
    padding: 0.75rem 1rem;
    border-right: 0;
    border-bottom: 1px solid rgba(212, 175, 55, 0.3);
    background: rgba(10, 34, 64, 0.94);
  }

  .header-bar {
    flex: 1;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .side-nav {
    position: fixed;
    top: 4.25rem;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1200;
    margin-top: 0;
    padding: 1.5rem 1.25rem;
    background: rgba(10, 34, 64, 0.98);
    opacity: 0;
    visibility: hidden;
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform 0.35s ease, opacity 0.35s ease, visibility 0.35s ease;
  }

  .side-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
  }

  .rail-meta {
    display: none;
  }

  .site-header::before {
    opacity: 0.2;
  }

  #main-content,
  .site-footer {
    margin-left: 0;
  }

  .page-container {
    max-width: var(--max-w);
  }

  .footer-panel {
    grid-template-columns: 1fr 1fr;
    gap: 2rem 1.25rem;
    padding: 2.5rem 1.25rem;
  }

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

  .card-grid--stagger .card:nth-child(even) {
    margin-top: 0;
  }
}

@media (max-width: 560px) {
  .footer-panel {
    grid-template-columns: 1fr;
  }

  .footer-column--brand {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .section {
    padding-block: 1.5rem;
  }
}

@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;
  }

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

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