:root {
  --page-gutter: clamp(1rem, 4vw, 2rem);
  --container: 76rem;
  --color-primary: #FF6B00;
  --color-primary-hover: #FFB066;
  --color-red: #E63946;
  --color-red-dark: #C1121F;
  --color-navy: #0B1B2B;
  --color-navy-soft: #1E3A5F;
  --color-line: #1E3A5F;
  --color-body: #F4F6F8;
  --color-pale: #B0C4DE;
  --color-white: #FFFFFF;
  --color-overlay: rgba(11, 27, 43, 0.6);
  --font-heading: "Archivo Black", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --size-display: 3.125rem;
  --size-h1: 2.5rem;
  --size-h2: 2rem;
  --size-h3: 1.5rem;
  --size-body: 1rem;
  --size-caption: 0.875rem;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

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

html {
  scroll-behavior: smooth;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--size-body);
  background: var(--color-navy);
  color: var(--color-white);
  line-height: 1.6;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-size: var(--size-h2);
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-white);
  margin: 0 0 0.75rem;
}

p {
  margin-top: 0;
}

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

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

button {
  font-family: inherit;
}

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

::selection {
  background: var(--color-primary);
  color: var(--color-white);
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 1rem;
  z-index: 5000;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.875rem 1.25rem;
  font-weight: 800;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
  color: var(--color-white);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  z-index: 4000;
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-red));
  transform-origin: 0 50%;
  transform: scaleX(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 27, 43, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
}

.site-header__lead {
  max-width: var(--container);
  margin-inline: auto;
  padding: 0.75rem var(--page-gutter);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-white);
  text-decoration: none;
}

.brand:hover {
  color: var(--color-white);
}

.brand__logo {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-red));
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  clip-path: polygon(0 0, 100% 0, 82% 100%, 0 100%);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand__tagline {
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-pale);
  margin-top: 0.15rem;
}

.site-header__coords {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
  color: var(--color-pale);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
}

.coord-pin {
  width: 0.625rem;
  height: 0.625rem;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 0.25rem rgba(255, 107, 0, 0.22), 0 0 0 0.5rem rgba(255, 107, 0, 0.08);
}

.nav-toggle {
  display: none;
}

.site-header__nav-wrap {
  border-top: 1px solid var(--color-line);
  background: rgba(11, 27, 43, 0.98);
}

.site-nav {
  max-width: var(--container);
  margin-inline: auto;
  padding: 0 var(--page-gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-nav__list {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: block;
  padding: 0.85rem 1.05rem;
  color: var(--color-pale);
  font-size: 0.9375rem;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 3px solid transparent;
  transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.nav-link:hover {
  color: var(--color-primary);
  background: rgba(255, 107, 0, 0.08);
}

.nav-link[aria-current="page"] {
  color: var(--color-white);
  background: rgba(255, 107, 0, 0.1);
  border-bottom-color: var(--color-primary);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 800;
  text-decoration: none;
  border: 1px solid var(--color-primary);
  transform: skewX(-8deg);
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.header-cta > span {
  display: inline-block;
  transform: skewX(8deg);
}

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

.header-cta__arrow {
  font-size: 1.1rem;
  line-height: 1;
}

.site-footer {
  position: relative;
  background-color: var(--color-navy);
  background-image:
    linear-gradient(rgba(30, 58, 95, 0.28) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 95, 0.28) 1px, transparent 1px),
    radial-gradient(circle at 85% 15%, rgba(255, 107, 0, 0.1), transparent 32%);
  background-size: 34px 34px, 34px 34px, auto;
  color: var(--color-white);
  border-top: 1px solid var(--color-navy-soft);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(90deg, var(--color-primary) 0 14px, var(--color-red) 14px 16px, transparent 16px 28px);
}

.site-footer::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 40%;
  height: 100%;
  pointer-events: none;
  background: linear-gradient(135deg, transparent 45%, rgba(255, 107, 0, 0.08) 46%, transparent 48%), radial-gradient(circle at 80% 20%, rgba(255, 107, 0, 0.12), transparent 35%);
}

.footer-shell {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin-inline: auto;
  padding: 3.5rem var(--page-gutter) 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 2.5rem;
}

.footer-brand .brand--footer {
  margin-bottom: 1rem;
}

.brand--footer .brand__logo--footer {
  width: 3rem;
  height: 3rem;
  font-size: 1.5rem;
}

.footer-trust {
  max-width: 32ch;
  color: var(--color-pale);
  font-size: 0.875rem;
  line-height: 1.6;
}

.footer-heading {
  margin: 0 0 1rem;
  padding-left: 0.75rem;
  font-size: 0.875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  border-left: 3px solid var(--color-primary);
}

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

.footer-links a {
  color: var(--color-pale);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 0.15s ease, padding-left 0.15s ease;
}

.footer-links a:hover {
  color: var(--color-primary);
  padding-left: 0.25rem;
  text-decoration: underline;
  text-underline-offset: 0.25rem;
  text-decoration-thickness: 2px;
}

.footer-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  font-size: 0.875rem;
}

.footer-contact__label {
  display: block;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-pale);
  opacity: 0.75;
  margin-bottom: 0.1rem;
}

.footer-contact__value {
  color: var(--color-white);
  font-weight: 600;
  overflow-wrap: anywhere;
}

.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  font-size: 0.8125rem;
  color: var(--color-pale);
}

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

.footer-icp {
  letter-spacing: 0.05em;
  color: var(--color-pale);
}

.footer-trustline {
  flex-basis: 100%;
  max-width: 72ch;
  opacity: 0.85;
}

.site-main {
  min-height: 70vh;
  outline: none;
  background: var(--color-navy);
  color: var(--color-white);
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.section {
  padding-block: 3.5rem;
}

.section--tight {
  padding-block: 2rem;
}

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

.section--light {
  background: var(--color-body);
  color: var(--color-navy);
}

.section--light h1,
.section--light h2,
.section--light h3,
.section--light h4 {
  color: var(--color-navy);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: var(--size-h2);
  line-height: 1.15;
  margin: 0 0 1rem;
}

.section-intro {
  max-width: 62ch;
  color: var(--color-pale);
}

.section--light .section-intro {
  color: #46586B;
}

.surface {
  background: var(--color-navy);
  border: 1px solid var(--color-line);
  color: var(--color-white);
  padding: 1.5rem;
}

.surface--light {
  background: var(--color-body);
  border: 1px solid #E1E6EC;
  color: var(--color-navy);
}

.surface--pale {
  background: rgba(255, 107, 0, 0.08);
  border: 1px solid rgba(255, 107, 0, 0.3);
  color: var(--color-white);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

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

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid--bento {
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.85rem 1.6rem;
  background: transparent;
  border: 1px solid var(--color-line);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  color: var(--color-white);
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.button:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(255, 107, 0, 0.08);
}

.button--primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  transform: skewX(-6deg);
}

.button--primary > * {
  display: inline-block;
  transform: skewX(6deg);
}

.button--primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-navy);
  transform: skewX(-6deg) translateY(-2px);
}

.button--accent {
  background: var(--color-red);
  border-color: var(--color-red);
  color: var(--color-white);
}

.button--accent:hover {
  background: var(--color-red-dark);
  border-color: var(--color-red-dark);
  color: var(--color-white);
}

.button--light {
  background: var(--color-body);
  border-color: var(--color-body);
  color: var(--color-navy);
}

.button--light:hover {
  background: var(--color-white);
  border-color: var(--color-white);
  color: var(--color-navy);
}

.breadcrumb {
  padding-block: 1rem;
  font-size: 0.875rem;
  color: var(--color-pale);
}

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

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

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

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

.breadcrumb__link:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--color-red);
  color: var(--color-white);
}

.badge--primary {
  background: var(--color-primary);
}

.badge--outline {
  background: transparent;
  border: 1px solid var(--color-pale);
  color: var(--color-pale);
}

.tag {
  display: inline-block;
  padding: 0.3rem 0.65rem;
  font-size: 0.8125rem;
  font-weight: 700;
  background: rgba(255, 107, 0, 0.1);
  border: 1px solid rgba(255, 107, 0, 0.35);
  color: var(--color-primary);
}

.media {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-navy-soft), var(--color-line));
}

.media::before {
  content: "";
  display: block;
  padding-bottom: 56.25%;
}

.media--square::before {
  padding-bottom: 100%;
}

.media--portrait::before {
  padding-bottom: 125%;
}

.media--wide::before {
  padding-bottom: 42.5%;
}

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

.media__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 35%, rgba(11, 27, 43, 0.72) 100%);
}

@media (max-width: 1080px) {
  .nav-link {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }
}

@media (max-width: 920px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--bento {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .site-header__lead {
    padding-block: 0.65rem;
  }

  .site-header__coords {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
    padding: 0.5rem 0.7rem;
    background: transparent;
    border: 1px solid var(--color-line);
    color: var(--color-white);
    cursor: pointer;
  }

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

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

  .nav-toggle__lines span {
    display: block;
    width: 1.25rem;
    height: 2px;
    background: currentColor;
    transition: transform 0.15s ease, opacity 0.15s ease;
  }

  .nav-toggle__text {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__lines span:first-child {
    transform: translateY(6px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__lines span:last-child {
    transform: translateY(-6px) rotate(-45deg);
  }

  .site-header__nav-wrap {
    display: none;
  }

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

  .site-nav {
    flex-direction: column;
    align-items: stretch;
    padding: 0.5rem var(--page-gutter) 1rem;
    gap: 0.25rem;
  }

  .site-nav__list {
    flex-direction: column;
  }

  .nav-link {
    padding: 0.8rem 0.6rem;
    border-bottom: none;
    border-left: 3px solid transparent;
  }

  .nav-link:hover {
    background: rgba(255, 107, 0, 0.08);
  }

  .nav-link[aria-current="page"] {
    border-left-color: var(--color-primary);
    border-bottom: none;
    background: rgba(255, 107, 0, 0.1);
  }

  .header-cta {
    justify-content: center;
    margin-top: 0.5rem;
    margin-bottom: 0.25rem;
    transform: none;
  }

  .header-cta > span {
    transform: none;
  }
}

@media (max-width: 620px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .grid--2,
  .grid--3,
  .grid--4,
  .grid--bento {
    grid-template-columns: 1fr;
  }

  .span-1,
  .span-2,
  .span-3,
  .span-4,
  .span-5,
  .span-6,
  .span-7,
  .span-8,
  .span-9,
  .span-10,
  .span-11,
  .span-12 {
    grid-column: span 1;
  }

  .section {
    padding-block: 2.5rem;
  }
}

@media (max-width: 480px) {
  :root {
    --size-display: 2.25rem;
    --size-h1: 1.9rem;
    --size-h2: 1.6rem;
    --size-h3: 1.3rem;
  }
}

@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;
  }

  .skip-link,
  .nav-toggle__lines span,
  .header-cta,
  .button,
  .nav-link,
  .footer-links a {
    transition: none;
  }
}