*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-navy: #0B2A46;
  --color-paper: #F6F1EB;
  --color-gold: #D4A843;
  --color-orange: #FF5E2B;
  --color-ink: #1A1C20;
  --color-steel: #4A6274;
  --color-gold-light: #E8C97E;
  --color-white: #FFFFFF;

  --font-display: "Montserrat Black", "Helvetica Neue", "Arial Black", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;

  --container: 1440px;
  --gutter: clamp(1rem, 3vw, 2.5rem);
  --header-height: 5rem;

  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 18px;

  --shadow-sm: 0 2px 8px rgba(11,42,70,0.08);
  --shadow-md: 0 4px 20px rgba(11,42,70,0.12);
  --shadow-lg: 0 8px 32px rgba(11,42,70,0.18);
}

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

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-ink);
  background-color: var(--color-paper);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-navy);
  line-height: 1.15;
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
}

h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-top: 2.5rem;
}

h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 1.5rem;
}

h4 {
  font-size: 1.125rem;
  font-weight: 700;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--color-orange);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  padding-left: 1.5rem;
}

small {
  font-size: 0.875rem;
}

:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 2px;
}

.container {
  width: min(calc(100% - 2 * var(--gutter)), var(--container));
  margin-inline: auto;
}

.content {
  max-width: 46rem;
  margin-inline: auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(15, minmax(0, 1fr));
  gap: var(--gutter);
}

.col-1 { grid-column: span 1; }
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }
.col-13 { grid-column: span 13; }
.col-14 { grid-column: span 14; }
.col-15 { grid-column: 1 / -1; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color 200ms ease, color 200ms ease, border-color 200ms ease, transform 200ms ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.btn-primary {
  background-color: var(--color-orange);
  border-color: var(--color-orange);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-navy);
  border-color: var(--color-navy);
}

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

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

.breadcrumb {
  margin-bottom: 2rem;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.8125rem;
  color: var(--color-steel);
}

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

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--color-steel);
  opacity: 0.55;
}

.breadcrumb__link {
  color: var(--color-steel);
  text-decoration: none;
  transition: color 200ms ease;
}

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

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

.panel {
  background-color: var(--color-white);
  border: 1px solid rgba(11,42,70,0.08);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: clamp(1.25rem, 2.5vw, 2rem);
}

.panel--cut {
  border-radius: 0;
  box-shadow: none;
  clip-path: polygon(0 0, calc(100% - 1.25rem) 0, 100% 1.25rem, 100% 100%, 0 100%);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.25rem;
  height: 2.25rem;
  padding-inline: 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.875rem;
  color: var(--color-white);
  background-color: var(--color-navy);
  border-radius: var(--radius-sm);
  clip-path: polygon(0 0, calc(100% - 4px) 0, 100% 4px, 100% 100%, 0 100%);
}

.status-dot {
  display: inline-block;
  flex-shrink: 0;
  width: 0.625rem;
  height: 0.625rem;
  border-radius: 50%;
  background-color: var(--color-gold);
}

.status-dot--orange {
  background-color: var(--color-orange);
}

.status-dot--steel {
  background-color: var(--color-steel);
}

.media-frame {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-navy), var(--color-steel));
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(115deg, transparent 55%, rgba(212,168,67,0.35) 80%, rgba(255,94,43,0.15) 100%);
}

.media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}

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

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

.media-frame--cut {
  border-radius: 0;
  clip-path: polygon(0 0, calc(100% - 1.5rem) 0, 100% 1.5rem, 100% 100%, 0 100%);
}

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

body.nav-locked {
  overflow: hidden;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-navy);
  border-bottom: 4px solid var(--color-gold);
}

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 1000;
  background-color: rgba(255,255,255,0.12);
  pointer-events: none;
}

.reading-progress > span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-gold), var(--color-orange));
  transition: width 80ms linear;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 2000;
  background-color: var(--color-orange);
  color: var(--color-white);
  padding: 0.75rem 1.5rem;
  font-weight: 700;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  text-decoration: none;
}

.skip-link:focus {
  left: 0;
  outline-offset: -3px;
}

.header-inner {
  position: relative;
  max-width: var(--container);
  margin-inline: auto;
  padding: 0 var(--gutter);
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  flex-shrink: 0;
  color: var(--color-white);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  flex-shrink: 0;
}

.brand-mark__core {
  position: absolute;
  inset: 25%;
  background-color: var(--color-gold);
  transform: rotate(45deg);
  border-radius: 2px;
}

.brand-mark__slash {
  position: absolute;
  inset: 8%;
  border: 2px solid var(--color-orange);
  transform: rotate(45deg);
  border-radius: 3px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--color-white);
}

.brand-tagline {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--color-gold);
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.75rem 0.85rem;
  font-family: var(--font-body);
  font-size: 0.925rem;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  border-bottom: 3px solid transparent;
  text-decoration: none;
  transition: color 200ms ease, border-color 200ms ease;
}

.nav-link:hover {
  color: var(--color-gold);
  border-bottom-color: var(--color-gold);
  text-decoration: none;
}

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

.nav-index {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--color-gold);
  opacity: 0.7;
}

.nav-link:hover .nav-index,
.nav-link[aria-current="page"] .nav-index {
  opacity: 1;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0.65rem;
  background: transparent;
  border: 1px solid rgba(212,168,67,0.6);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 200ms ease, background-color 200ms ease;
}

.nav-toggle:hover {
  border-color: var(--color-gold);
  background-color: rgba(212,168,67,0.1);
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-gold);
  transition: transform 250ms ease, opacity 200ms ease;
}

.site-footer {
  margin-top: clamp(3rem, 8vw, 6rem);
  background-color: var(--color-navy);
  color: rgba(255,255,255,0.85);
}

.footer-decoration {
  height: 8px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-orange) 55%, transparent 65%);
  clip-path: polygon(0 0, calc(100% - 6rem) 0, 100% 100%, 0 100%);
}

.footer-main {
  max-width: var(--container);
  margin-inline: auto;
  padding: clamp(2.5rem, 6vw, 4.5rem) var(--gutter) 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--color-white);
  text-decoration: none;
}

.footer-logo:hover {
  color: var(--color-gold);
  text-decoration: none;
}

.footer-tagline {
  margin-top: 0.25rem;
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  color: var(--color-gold);
}

.footer-trust {
  margin-top: 1.25rem;
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.72);
  max-width: 34rem;
}

.footer-col {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.footer-title {
  margin: 0 0 1.25rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
}

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

.footer-col a {
  color: rgba(255,255,255,0.82);
  text-decoration: none;
  transition: color 200ms ease;
}

.footer-col a:hover {
  color: var(--color-gold);
  text-decoration: none;
}

.footer-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.55);
}

.footer-bottom {
  max-width: var(--container);
  margin-inline: auto;
  padding: 1.25rem var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  border-top: 1px solid rgba(212,168,67,0.2);
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
}

.footer-bottom p {
  margin: 0;
}

@media (max-width: 1099.98px) {
  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 150;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(255,94,43,0.08) 0%, transparent 40%), var(--color-navy);
    overflow-y: auto;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 300ms ease, visibility 0s linear 300ms;
  }

  .site-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
    transition: transform 300ms ease, visibility 0s linear 0s;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    width: min(100% - 3rem, 26rem);
    gap: 0.4rem;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    display: flex;
    align-items: baseline;
    gap: 1.25rem;
    padding: 1rem 0.25rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    border-bottom: 1px solid rgba(212,168,67,0.25);
  }

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

  .nav-index {
    font-size: 0.75rem;
    opacity: 0.8;
  }

  .header-actions {
    position: relative;
    z-index: 200;
  }

  .header-actions .btn {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav[data-open] ~ .header-actions .nav-toggle .nav-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .site-nav[data-open] ~ .header-actions .nav-toggle .nav-toggle__bar:nth-child(2) {
    opacity: 0;
  }

  .site-nav[data-open] ~ .header-actions .nav-toggle .nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

@media (max-width: 960px) {
  .footer-main {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .grid {
    grid-template-columns: 1fr;
  }

  [class*="col-"] {
    grid-column: auto;
  }
}

@media (max-width: 620px) {
  :root {
    --header-height: 4.25rem;
  }

  .brand-name {
    font-size: 1.1rem;
  }

  .brand-mark {
    width: 2.1rem;
    height: 2.1rem;
  }

  .nav-toggle {
    width: 2.5rem;
    height: 2.5rem;
  }

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

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

@media (max-width: 480px) {
  .brand-tagline {
    display: none;
  }
}

@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;
    scroll-behavior: auto !important;
  }

  .reading-progress {
    display: none;
  }
}