:root {
  --red: #E63946;
  --red-light: #E84955;
  --red-deep: #C1121F;
  --ink: #0D1B2A;
  --ink-2: #1B263B;
  --orange: #F4A261;
  --cream: #F1FAEE;
  --gray: #8D99AE;
  --green: #2A9D8F;
  --white: #FFFFFF;
  --font-display: "Oswald", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-max: 1180px;
  --shadow-red: 6px 6px 0 rgba(230, 57, 70, 0.16);
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
}

body, h1, h2, h3, h4, h5, h6, p, ul, ol, figure, address {
  margin: 0;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: 0.5em;
}

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

a {
  color: inherit;
}

button {
  font: inherit;
}

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

#main-content {
  flex: 1 0 auto;
  scroll-margin-top: 6rem;
}

.skip-link {
  position: absolute;
  left: -200%;
  top: 0;
  z-index: 300;
  display: inline-block;
  padding: 0.6rem 1rem;
  background: var(--red);
  color: var(--white);
  font-weight: 700;
  text-decoration: none;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.2);
}

.skip-link:focus {
  left: 0;
  top: 0;
}

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

.header-topline {
  display: flex;
  height: 6px;
  background: var(--ink);
}

.header-topline span {
  display: block;
  height: 100%;
}

.header-topline span:nth-child(1) {
  flex: 5;
  background: var(--red);
}

.header-topline span:nth-child(2) {
  flex: 1;
  background: var(--orange);
}

.header-topline span:nth-child(3) {
  flex: 4;
  background: var(--green);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--ink);
  color: var(--cream);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.14);
}

.header-inner {
  padding-top: 1rem;
  padding-bottom: 0.85rem;
}

.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.6rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  max-width: 100%;
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: var(--red);
  color: var(--white);
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  clip-path: polygon(7px 0, 100% 0, calc(100% - 7px) 100%, 0 100%);
}

.brand-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.15;
  color: var(--white);
}

.brand-tagline {
  margin-top: 0.2rem;
  color: var(--gray);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  line-height: 1.4;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.7rem;
  background: transparent;
  border: 1px solid rgba(241, 250, 238, 0.25);
  color: var(--cream);
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s;
}

.nav-toggle:hover {
  background: rgba(230, 57, 70, 0.15);
  border-color: var(--red);
}

.nav-toggle-box {
  position: relative;
  display: block;
  width: 1.35rem;
  height: 1rem;
}

.nav-toggle-box i {
  position: absolute;
  left: 0;
  display: block;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s, opacity 0.2s, top 0.2s;
}

.nav-toggle-box i:nth-child(1) {
  top: 0;
}

.nav-toggle-box i:nth-child(2) {
  top: calc(50% - 1px);
}

.nav-toggle-box i:nth-child(3) {
  top: calc(100% - 2px);
}

.nav-toggle.is-open .nav-toggle-box i:nth-child(1) {
  top: calc(50% - 1px);
  transform: rotate(45deg);
}

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

.nav-toggle.is-open .nav-toggle-box i:nth-child(3) {
  top: calc(50% - 1px);
  transform: rotate(-45deg);
}

.nav-toggle-label {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.main-nav {
  display: none;
}

@media (max-width: 899.98px) {
  .main-nav {
    position: absolute;
    top: calc(100% - 0.15rem);
    left: 1rem;
    right: 1rem;
    z-index: 90;
    padding: 0.9rem;
    background: var(--ink);
    border: 1px solid rgba(241, 250, 238, 0.16);
    border-top: 4px solid var(--red);
    box-shadow: 0 18px 32px rgba(0, 0, 0, 0.3);
  }

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

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

  .nav-list {
    display: grid;
    gap: 0.15rem;
  }

  .nav-link {
    display: block;
    padding: 0.75rem 0.8rem;
    border-left: 3px solid transparent;
    color: var(--cream);
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-decoration: none;
    text-transform: uppercase;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
  }

  .nav-link:hover {
    background: rgba(230, 57, 70, 0.15);
    border-left-color: var(--orange);
    color: var(--orange);
  }

  .nav-link[aria-current="page"] {
    background: rgba(230, 57, 70, 0.2);
    border-left-color: var(--red);
    color: var(--orange);
  }

  .nav-index {
    display: block;
    margin: 0.85rem 0.2rem 0;
    color: var(--gray);
    font-family: var(--font-display);
    font-size: 0.62rem;
    letter-spacing: 0.08em;
    text-align: right;
  }
}

@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }

  .masthead {
    display: block;
    text-align: center;
  }

  .brand {
    justify-content: center;
  }

  .main-nav {
    display: block;
    margin-top: 0.75rem;
    border-top: 1px solid rgba(241, 250, 238, 0.18);
  }

  .nav-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0 0.25rem;
  }

  .nav-link {
    display: inline-block;
    padding: 0.7rem 1rem 0.5rem;
    border-bottom: 3px solid transparent;
    color: var(--cream);
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-decoration: none;
    text-transform: uppercase;
    transition: color 0.2s, border-color 0.2s, background-color 0.2s;
  }

  .nav-link:hover {
    background: rgba(230, 57, 70, 0.06);
    border-bottom-color: rgba(244, 162, 97, 0.55);
    color: var(--orange);
  }

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

  .nav-index {
    display: block;
    margin-top: 0.35rem;
    color: var(--gray);
    font-family: var(--font-display);
    font-size: 0.62rem;
    letter-spacing: 0.08em;
    text-align: center;
  }
}

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

.footer-rule {
  display: block;
  height: 6px;
  background: linear-gradient(90deg, var(--red) 0 52%, var(--orange) 52% 68%, var(--green) 68% 100%);
}

.footer-grid {
  display: grid;
  gap: 2rem;
  padding: 3.2rem 0 2.5rem;
}

@media (min-width: 700px) and (max-width: 1023.98px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

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

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1.5fr;
    align-items: start;
  }
}

.footer-brand {
  max-width: 36rem;
}

.footer-logo {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  margin: 0;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--white);
}

.footer-logo span {
  color: var(--orange);
  font-size: 1rem;
}

.footer-tagline {
  margin: 0.6rem 0 1rem;
  padding-left: 0.7rem;
  border-left: 3px solid var(--green);
  color: var(--gray);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer-trust {
  margin: 0 0 1.2rem;
  padding: 1rem;
  background: rgba(27, 38, 59, 0.6);
  border: 1px solid rgba(241, 250, 238, 0.1);
  font-size: 0.82rem;
  line-height: 1.7;
}

.footer-nav,
.footer-legal {
  padding-top: 0.25rem;
}

.footer-heading {
  display: inline-block;
  margin: 0 0 0.9rem;
  padding-bottom: 0.2rem;
  border-bottom: 3px solid var(--red);
  color: var(--orange);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
}

.footer-links {
  display: grid;
  gap: 0.45rem;
}

.footer-links a {
  display: inline-block;
  color: var(--cream);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.2s, padding-left 0.2s;
}

.footer-links a:hover {
  color: var(--orange);
  padding-left: 0.25rem;
}

.footer-address {
  display: grid;
  gap: 0.35rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(241, 250, 238, 0.12);
  font-style: normal;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--gray);
}

.footer-note {
  margin: 0.9rem 0 0;
  color: var(--orange);
  font-size: 0.75rem;
}

.footer-bottom {
  background: rgba(13, 27, 42, 0.8);
  border-top: 1px solid rgba(241, 250, 238, 0.14);
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
  color: var(--gray);
  font-size: 0.78rem;
}

.footer-bottom-inner p {
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.1rem;
  background: var(--red);
  border: 2px solid var(--red);
  color: var(--white);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, transform 0.1s;
}

.btn:hover {
  background: var(--red-light);
  border-color: var(--red-light);
}

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

.btn-ghost {
  background: transparent;
  border-color: rgba(241, 250, 238, 0.4);
  color: var(--cream);
}

.btn-ghost:hover {
  background: rgba(230, 57, 70, 0.2);
  border-color: var(--orange);
  color: var(--white);
}

.btn-small {
  padding: 0.4rem 0.8rem;
  font-size: 0.75rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.6rem;
  padding: 0.15rem 0.6rem 0.15rem 0.75rem;
  background: var(--orange);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

.section {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.section-dark {
  background: var(--ink);
  color: var(--cream);
}

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

.section-header {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 0 1.2rem;
  margin-bottom: 2rem;
  padding-bottom: 0.8rem;
  border-bottom: 2px solid rgba(13, 27, 42, 0.15);
}

.section-dark .section-header {
  border-bottom-color: rgba(241, 250, 238, 0.2);
}

.section-index {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--red);
  transform: skewX(-6deg);
}

.section-title {
  margin: 0;
  font-size: clamp(1.3rem, 3vw, 2.2rem);
}

.section-desc {
  width: 100%;
  max-width: 56rem;
  margin: 0.5rem 0 0;
  color: inherit;
  opacity: 0.85;
}

.index-map {
  display: grid;
  gap: 0.8rem;
}

.index-map__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.2rem 0.9rem;
  align-items: baseline;
  padding: 1rem 1.1rem;
  background: var(--white);
  border: 1px solid rgba(13, 27, 42, 0.12);
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.index-map__item:hover {
  border-color: var(--red);
  box-shadow: var(--shadow-red);
  transform: translate(-2px, -2px);
}

.index-map__num {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--red);
}

.index-map__text {
  color: var(--ink);
  font-weight: 600;
  line-height: 1.4;
}

.index-map__desc {
  grid-column: 2;
  color: var(--ink-2);
  font-size: 0.85rem;
}

.section-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.section-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.7rem;
  background: var(--white);
  border: 1px solid rgba(13, 27, 42, 0.16);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.section-nav a:hover {
  border-color: var(--red);
  color: var(--red);
}

.section-nav a.is-active,
.section-nav a[aria-current="true"] {
  background: var(--red);
  border-color: var(--red);
  color: var(--white);
  box-shadow: 3px 3px 0 rgba(13, 27, 42, 0.2);
}

.card-grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 600px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 980px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.4rem;
  background: var(--white);
  border: 1px solid rgba(13, 27, 42, 0.12);
  box-shadow: 5px 5px 0 rgba(230, 57, 70, 0.12);
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.card:hover {
  border-color: rgba(230, 57, 70, 0.4);
  box-shadow: 8px 8px 0 rgba(230, 57, 70, 0.2);
  transform: translate(-2px, -2px);
}

.card-index {
  display: block;
  margin-bottom: 0.6rem;
  color: var(--red);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.card-title {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}

.card-body {
  margin: 0;
  color: var(--ink-2);
  font-size: 0.9rem;
}

.card .btn {
  margin-top: auto;
  align-self: flex-start;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 700px) {
  .stat-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  position: relative;
  padding: 1.1rem;
  background: var(--ink-2);
  border-left: 4px solid var(--red);
  color: var(--cream);
}

.stat-card--orange {
  border-left-color: var(--orange);
}

.stat-card--green {
  border-left-color: var(--green);
}

.stat-value {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--red-light);
}

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

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

.stat-label {
  margin: 0.35rem 0 0;
  color: var(--gray);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel {
  position: relative;
  padding: 1.5rem;
  background: var(--white);
  border: 1px solid rgba(13, 27, 42, 0.14);
  box-shadow: var(--shadow-red);
}

.media-box {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--ink-2), var(--ink) 68%, var(--red) 160%);
  border: 1px solid rgba(13, 27, 42, 0.16);
  color: rgba(241, 250, 238, 0.55);
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.media-box::after {
  content: "AK IMAGE";
  position: absolute;
  right: 0.75rem;
  bottom: 0.5rem;
  padding: 0.12rem 0.4rem;
  border: 1px solid rgba(244, 162, 97, 0.6);
  color: var(--orange);
  font-size: 0.6rem;
  transform: skewX(-6deg);
}

.media-box--portrait {
  aspect-ratio: 4 / 5;
}

.media-box--wide {
  aspect-ratio: 21 / 9;
}

.figure {
  margin: 1.5rem 0;
}

.figure figcaption {
  margin-top: 0.5rem;
  padding-left: 0.6rem;
  border-left: 3px solid var(--orange);
  color: var(--gray);
  font-size: 0.8rem;
}

.page-header {
  position: relative;
  overflow: hidden;
  padding: clamp(2.7rem, 6vw, 4.5rem) 0;
  background: var(--ink);
  border-bottom: 6px solid var(--red);
  color: var(--cream);
}

.page-header::after {
  content: "AK";
  position: absolute;
  z-index: 0;
  right: -1rem;
  bottom: -3.5rem;
  color: rgba(230, 57, 70, 0.22);
  font-family: var(--font-display);
  font-size: clamp(8rem, 22vw, 15rem);
  font-weight: 700;
  line-height: 1;
  pointer-events: none;
  transform: skewX(-8deg);
}

.page-kicker {
  position: relative;
  z-index: 1;
  display: inline-flex;
  margin-bottom: 0.6rem;
  color: var(--orange);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.page-title {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.6rem);
}

.page-intro {
  position: relative;
  z-index: 1;
  max-width: 46rem;
  margin: 1rem 0 0;
  color: var(--cream);
  opacity: 0.9;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0 0 1.5rem;
  padding: 0;
  font-size: 0.82rem;
  color: var(--gray);
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--red);
  font-family: var(--font-display);
}

.breadcrumb a {
  color: var(--ink);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--red);
}

.prose {
  max-width: 72ch;
}

.prose h2 {
  margin: 2.4rem 0 0.8rem;
  padding-left: 0.75rem;
  border-left: 6px solid var(--red);
  font-size: 1.5rem;
}

.prose p {
  margin-bottom: 1.2rem;
  color: var(--ink-2);
}

.prose a {
  color: var(--red);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  transition: color 0.2s;
}

.prose a:hover {
  color: var(--red-deep);
}

.data-highlight {
  display: inline-block;
  margin: 0 0.06em;
  padding: 0 0.12em;
  border-bottom: 2px dotted var(--red);
  color: var(--red-deep);
  font-weight: 700;
}

.data-highlight[data-detail] {
  cursor: pointer;
  text-decoration: underline dotted;
  text-underline-offset: 3px;
  transition: background-color 0.2s, color 0.2s;
}

.data-highlight[data-detail]:hover {
  background: rgba(230, 57, 70, 0.1);
  color: var(--red-deep);
}

.site-popover {
  position: fixed;
  z-index: 500;
  width: min(18rem, calc(100vw - 2rem));
  padding: 1rem 1rem 0.9rem;
  background: var(--ink);
  border: 1px solid rgba(244, 162, 97, 0.7);
  border-top: 5px solid var(--red);
  box-shadow: 8px 8px 0 rgba(230, 57, 70, 0.4);
  color: var(--cream);
}

.site-popover[hidden] {
  display: none;
}

.site-popover__title {
  margin: 0 0.5rem 0.35rem 0;
  padding-right: 1.5rem;
  color: var(--orange);
  font-size: 1rem;
}

.site-popover__text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.6;
}

.site-popover__close {
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  width: 1.6rem;
  height: 1.6rem;
  border: 1px solid rgba(241, 250, 238, 0.35);
  background: transparent;
  color: var(--cream);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s;
}

.site-popover__close:hover {
  background: var(--red);
  border-color: var(--red);
}

@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;
  }
}