:root {
  --color-ink: #0A1F44;
  --color-gold: #D4AF37;
  --color-orange: #FF6B35;
  --color-paper: #F5F0E6;
  --color-cream: #FDF9F0;
  --color-graphite: #3A3A3A;
  --color-fog: #B8C4D9;
  --color-green: #2C8C5A;
  --color-night: #222222;
  --font-heading: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", Arial, sans-serif;
  --font-body: "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  --font-number: "JetBrains Mono", Consolas, monospace;
  --width-site: 1440px;
  --radius: 18px;
  --space: clamp(1rem, 4vw, 3.5rem);
  --ease: cubic-bezier(0.2, 0.65, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 140px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-graphite);
  background:
    radial-gradient(circle at 85% 8%, rgba(212, 175, 55, 0.07), transparent 30%),
    radial-gradient(circle at 12% 92%, rgba(10, 31, 68, 0.08), transparent 32%),
    var(--color-paper);
}

h1,
h2,
h3,
h4 {
  margin: 0 0 0.75em;
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-ink);
}

h1 {
  font-size: clamp(2.8rem, 7vw, 6rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
}

p {
  margin: 0 0 1rem;
}

a {
  color: var(--color-orange);
  text-decoration-thickness: 0.12em;
  text-underline-offset: 0.18em;
}

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

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

dl,
dd {
  margin: 0;
}

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

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

:focus {
  outline: none;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0;
  left: 50%;
  z-index: 300;
  transform: translate(-50%, -150%);
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 0.7rem 1.2rem;
  border-radius: 0 0 10px 10px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 6px 24px rgba(10, 31, 68, 0.25);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--scroll-progress, 0%);
  height: 3px;
  z-index: 160;
  pointer-events: none;
  background: linear-gradient(90deg, var(--color-gold), var(--color-orange));
  border-radius: 0 4px 4px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 240, 230, 0.94);
  border-bottom: 1px solid rgba(10, 31, 68, 0.14);
}

.header-inner {
  max-width: var(--width-site);
  margin: 0 auto;
  padding: 0 28px;
}

.masthead {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 18px 0 12px;
}

.brand-lockup {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
}

.brand-kicker {
  font-family: var(--font-number);
  font-size: 0.7rem;
  letter-spacing: 0.38em;
  line-height: 1;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-left: 0.38em;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: 0.08em;
  color: var(--color-ink);
}

.brand-sub {
  font-size: 0.72rem;
  letter-spacing: 0.34em;
  line-height: 1.4;
  color: var(--color-graphite);
  padding-left: 0.34em;
  margin-top: 2px;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0.4rem;
  color: var(--color-ink);
}

.nav-toggle-box {
  display: grid;
  gap: 6px;
  width: 24px;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle:hover {
  color: var(--color-orange);
}

.nav-toggle-text {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--color-graphite);
}

.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-nav {
  border-top: 1px solid var(--color-fog);
  border-bottom: 1px solid var(--color-fog);
}

.nav-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.15rem 0.4rem;
  padding: 10px 0;
}

.nav-item {
  min-width: 0;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.4rem 0.9rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-ink);
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.nav-link:hover {
  background: rgba(255, 107, 53, 0.08);
  border-color: rgba(255, 107, 53, 0.22);
  color: var(--color-orange);
}

.nav-link[aria-current="page"] {
  background: rgba(212, 175, 55, 0.1);
  border-color: rgba(212, 175, 55, 0.5);
  color: var(--color-orange);
}

.site-footer {
  background: var(--color-ink);
  color: var(--color-paper);
}

.footer-accent {
  height: 6px;
  background: linear-gradient(90deg, var(--color-ink) 0%, var(--color-green) 22%, var(--color-gold) 55%, var(--color-orange) 80%, var(--color-ink) 100%);
}

.footer-inner {
  max-width: var(--width-site);
  margin: 0 auto;
  padding: 64px 28px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding-bottom: 48px;
}

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

.footer-brand-mark {
  margin: 0 0 0.2em;
  font-family: var(--font-number);
  font-size: 2.8rem;
  font-weight: 400;
  line-height: 1;
  color: var(--color-gold);
  letter-spacing: -0.04em;
}

.footer-brand-name {
  margin: 0 0 0.25em;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: #ffffff;
}

.footer-tagline {
  margin: 0 0 1.2em;
  font-size: 0.74rem;
  letter-spacing: 0.22em;
  line-height: 1.4;
  text-transform: uppercase;
  color: var(--color-gold);
}

.footer-note {
  max-width: 36em;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(245, 240, 230, 0.72);
}

.footer-heading {
  margin: 0 0 1.2em;
  padding-bottom: 0.35rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  border-bottom: 1px solid rgba(212, 175, 55, 0.35);
}

.footer-nav-list a,
.footer-legal-list a {
  display: inline-block;
  padding: 0.3rem 0;
  color: rgba(245, 240, 230, 0.85);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.footer-nav-list a:hover,
.footer-legal-list a:hover,
.footer-nav-list a:focus-visible,
.footer-legal-list a:focus-visible {
  color: var(--color-gold);
  border-color: rgba(212, 175, 55, 0.7);
  transform: translateX(4px);
}

.footer-contact-list .footer-contact-note {
  margin-top: 0.4rem;
  padding-left: 0.75rem;
  border-left: 2px solid var(--color-gold);
  font-size: 0.85rem;
  color: rgba(245, 240, 230, 0.56);
}

.footer-contact-list li {
  padding: 0.28rem 0;
  line-height: 1.7;
  color: rgba(245, 240, 230, 0.78);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 20px 0 28px;
  border-top: 1px solid rgba(245, 240, 230, 0.18);
  font-size: 0.85rem;
  color: rgba(245, 240, 230, 0.6);
}

.footer-copy,
.footer-icp {
  margin: 0;
}

.container {
  width: 100%;
  max-width: var(--width-site);
  margin: 0 auto;
  padding: var(--space) 28px;
}

.section {
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.75rem;
  font-family: var(--font-number);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-orange);
}

.section-label::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--color-gold);
}

.content-block {
  max-width: 62ch;
}

.content-block--wide {
  max-width: 84ch;
}

.grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.grid__aside,
.grid__body {
  min-width: 0;
}

.card {
  background: var(--color-cream);
  border: 1px solid rgba(10, 31, 68, 0.08);
  border-radius: var(--radius);
  padding: clamp(24px, 3vw, 40px);
  box-shadow: 0 1px 0 rgba(10, 31, 68, 0.04);
}

.card__title {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
}

.card__body {
  margin: 0;
  line-height: 1.75;
}

.card__link {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 700;
}

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  min-height: 180px;
  background: linear-gradient(145deg, rgba(10, 31, 68, 0.22), rgba(184, 196, 217, 0.45));
  border: 1px solid rgba(10, 31, 68, 0.12);
}

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

.media-frame--ratio::before {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 62%;
  height: 62%;
  background: linear-gradient(135deg, transparent 48%, rgba(10, 31, 68, 0.2) 48% 52%, transparent 52%);
  pointer-events: none;
}

.media-frame img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame[data-caption]::after {
  content: attr(data-caption);
  position: absolute;
  right: 0.75rem;
  bottom: 0.5rem;
  z-index: 2;
  padding: 0.25rem 0.6rem;
  background: rgba(10, 31, 68, 0.78);
  color: var(--color-paper);
  font-family: var(--font-number);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  border-radius: 999px;
}

.media-frame__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  text-align: center;
  font-family: var(--font-number);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: rgba(10, 31, 68, 0.55);
}

.data-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: rgba(10, 31, 68, 0.12);
  border: 1px solid rgba(10, 31, 68, 0.12);
}

.data-list__item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  background: var(--color-cream);
  padding: 1rem 1.15rem;
}

.data-key {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-graphite);
}

.data-value {
  font-family: var(--font-number);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-ink);
}

.data-value--orange {
  color: var(--color-orange);
}

.data-value--green {
  color: var(--color-green);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.75rem 1.4rem;
  border: 2px solid transparent;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), transform 0.2s var(--ease);
}

.btn--primary {
  background: var(--color-orange);
  color: var(--color-paper);
  box-shadow: 0 6px 16px rgba(255, 107, 53, 0.28);
}

.btn--primary:hover {
  background: #e85a2a;
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(255, 107, 53, 0.34);
}

.btn--outline {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-ink);
}

.btn--outline:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 0;
  font-size: 0.9rem;
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  color: var(--color-fog);
}

.breadcrumbs__sep {
  color: var(--color-fog);
}

.breadcrumbs__link {
  color: var(--color-graphite);
  text-decoration: none;
}

.breadcrumbs__link:hover {
  color: var(--color-orange);
}

.breadcrumbs__current {
  color: var(--color-ink);
  font-weight: 600;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

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

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

@media (max-width: 760px) {
  html {
    scroll-padding-top: 80px;
  }

  .header-inner,
  .container,
  .footer-inner {
    padding-right: 20px;
    padding-left: 20px;
  }

  .masthead {
    justify-content: flex-start;
    text-align: left;
    padding: 14px 0 10px;
  }

  .brand-lockup {
    align-items: flex-start;
  }

  .nav-toggle {
    display: inline-flex;
    position: absolute;
    top: 14px;
    right: 0;
  }

  .site-nav {
    display: none;
  }

  .site-nav[data-open] {
    display: block;
    max-height: calc(100dvh - 90px);
    overflow: auto;
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
    padding: 0 0 12px;
  }

  .nav-link {
    display: block;
    width: 100%;
    padding: 0.8rem 0.5rem;
    border-radius: 0;
    border-bottom: 1px solid rgba(10, 31, 68, 0.12);
    text-align: left;
  }

  .nav-link:hover {
    background: transparent;
    border-bottom-color: rgba(10, 31, 68, 0.12);
  }

  .nav-link[aria-current="page"] {
    padding-left: 0.65rem;
    border-left: 4px solid var(--color-orange);
    border-bottom-color: rgba(10, 31, 68, 0.12);
  }

  .site-footer {
    padding-top: 0;
  }

  .footer-inner {
    padding-top: 44px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (min-width: 768px) {
  .grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--split {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-bottom {
    flex-direction: row;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

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

  .scroll-progress {
    display: none;
  }
}