:root {
  --c-primary: #FF4E00;
  --c-primary-deep: #E84300;
  --c-deep: #1A2A3A;
  --c-accent: #C6FF00;
  --c-cream: #F7F3E8;
  --c-light-orange: #FFD1B3;
  --c-gray-blue: #4A5B6D;
  --c-dark-gray: #2E3A45;
  --c-yellow: #FFE600;
  --c-white: #FFFFFF;
  --c-gray-lite: #8C9BAA;

  --font-headline: Impact, 'Arial Black', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --font-data: 'Roboto Mono', 'Courier New', monospace;

  --header-w: 264px;
  --header-h: 64px;
  --container-w: 1240px;
  --gap: 24px;
  --radius: 6px;
  --radius-lg: 12px;

  --ease-sport: cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast: 180ms ease;
  --t-base: 260ms var(--ease-sport);

  --shadow-card: 0 2px 16px rgba(26, 42, 58, 0.10);
  --shadow-rail: 4px 0 24px rgba(0, 0, 0, 0.28);
}

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

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

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-dark-gray);
  background: var(--c-cream);
  padding-top: var(--header-h);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (min-width: 1024px) {
  body {
    padding-top: 0;
    padding-left: var(--header-w);
  }
}

main {
  display: block;
  flex: 1;
}

.main-content {
  min-height: 60vh;
}

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

a {
  color: var(--c-primary);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

h1, h2, h3, h4 {
  font-family: var(--font-headline);
  font-weight: 900;
  line-height: 1.15;
  color: var(--c-dark-gray);
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(32px, 6vw, 64px); }
h2 { font-size: clamp(24px, 3.4vw, 38px); }
h3 { font-size: clamp(18px, 2vw, 22px); }

p {
  margin: 0 0 1em;
}

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

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

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

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
  user-select: none;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 2000;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--c-primary);
  color: var(--c-white);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: top var(--t-fast);
}

.skip-link:focus-visible {
  top: 16px;
  outline: 3px solid var(--c-accent);
  outline-offset: 2px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: var(--c-deep);
  z-index: 1000;
  border-bottom: 3px solid var(--c-primary);
}

@media (min-width: 1024px) {
  .site-header {
    right: auto;
    bottom: 0;
    width: var(--header-w);
    height: auto;
    border-bottom: none;
    border-right: 4px solid var(--c-primary);
    box-shadow: var(--shadow-rail);
  }
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 100%;
  padding: 0 16px;
}

@media (min-width: 1024px) {
  .header-inner {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    height: auto;
    padding: 0;
  }
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  text-decoration: none;
}

.brand-symbol {
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: var(--c-primary);
  color: var(--c-white);
  font-family: var(--font-headline);
  font-style: italic;
  font-weight: 900;
  font-size: 18px;
  line-height: 1;
  box-shadow: 2px 2px 0 rgba(255, 78, 0, 0.28);
  transform: skew(-8deg);
  clip-path: polygon(0 0, 100% 0, 100% 76%, 76% 100%, 0 100%);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 18px;
  color: var(--c-white);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-sub {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--c-gray-lite);
  text-transform: uppercase;
  margin-top: 2px;
}

@media (max-width: 1023px) {
  .site-header .brand-sub {
    display: none;
  }

  .brand {
    gap: 8px;
  }

  .brand-symbol {
    width: 34px;
    height: 34px;
    font-size: 17px;
  }

  .brand-name {
    font-size: 17px;
  }
}

@media (min-width: 1024px) {
  .brand {
    padding: 24px 20px 20px;
  }

  .brand-symbol {
    width: 40px;
    height: 40px;
    font-size: 22px;
  }

  .brand-name {
    font-size: 21px;
  }
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 0 8px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.nav-toggle-line {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--c-white);
  transition: transform var(--t-fast), background var(--t-fast), opacity var(--t-fast);
}

.nav-toggle:hover .nav-toggle-line,
.nav-toggle:focus-visible .nav-toggle-line {
  background: var(--c-primary);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }
}

.site-nav {
  position: fixed;
  top: var(--header-h);
  left: 0;
  bottom: 0;
  z-index: 999;
  display: flex;
  flex-direction: column;
  width: min(320px, 86vw);
  background: var(--c-deep);
  overflow-y: auto;
  visibility: hidden;
  transform: translateX(-105%);
  transition: transform var(--t-base), visibility 0s 260ms;
  scrollbar-width: thin;
  scrollbar-color: var(--c-primary) rgba(255, 255, 255, 0.1);
}

.site-nav[data-open] {
  visibility: visible;
  transform: translateX(0);
  transition: transform var(--t-base), visibility 0s 0s;
}

@media (min-width: 1024px) {
  .site-nav {
    position: static;
    width: auto;
    flex: 1;
    padding-top: 12px;
    visibility: visible;
    transform: none;
    overflow-y: auto;
    transition: none;
  }

  .site-nav[data-open] {
    transform: none;
    visibility: visible;
  }
}

.nav-list {
  padding: 8px 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 24px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: background var(--t-fast), color var(--t-fast), padding-left var(--t-fast);
}

.nav-link:hover {
  color: var(--c-white);
  background: rgba(255, 78, 0, 0.14);
  padding-left: 30px;
}

.nav-link[aria-current="page"] {
  color: var(--c-primary);
  font-weight: 700;
  background: linear-gradient(90deg, rgba(255, 78, 0, 0.24), rgba(255, 78, 0, 0.04));
}

.nav-link[aria-current="page"]::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--c-primary);
  box-shadow: 2px 0 8px rgba(255, 78, 0, 0.5);
}

.nav-link-index {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--c-gray-lite);
  letter-spacing: 0.1em;
  transition: color var(--t-fast);
}

.nav-link:hover .nav-link-index,
.nav-link[aria-current="page"] .nav-link-index {
  color: var(--c-light-orange);
}

.nav-auth {
  display: flex;
  gap: 10px;
  padding: 16px 20px;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

@media (min-width: 1024px) {
  .nav-auth {
    padding-bottom: 20px;
  }
}

.btn-auth {
  flex: 1;
  padding: 10px 8px;
  font-size: 13px;
}

.nav-rail-note {
  display: none;
}

@media (min-width: 1024px) {
  .nav-rail-note {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    background: rgba(198, 255, 0, 0.06);
    border-top: 1px solid rgba(198, 255, 0, 0.2);
  }

  .nav-rail-pulse {
    width: 8px;
    height: 8px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--c-yellow);
    box-shadow: 0 0 0 0 rgba(255, 230, 0, 0.6);
    animation: pulse 2s infinite;
  }

  .nav-rail-line {
    width: 26px;
    height: 3px;
    flex-shrink: 0;
    background: var(--c-accent);
    transform: skew(-20deg);
  }

  .nav-rail-text {
    font-family: var(--font-data);
    font-size: 10px;
    letter-spacing: 0.22em;
    color: var(--c-accent);
  }
}

@keyframes pulse {
  70% {
    box-shadow: 0 0 0 8px rgba(255, 230, 0, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 230, 0, 0);
  }
}

.scroll-progress {
  position: absolute;
  z-index: 5;
  overflow: hidden;
  pointer-events: none;
}

.scroll-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 100ms linear;
}

@media (max-width: 1023px) {
  .scroll-progress {
    top: auto;
    right: 0;
    bottom: -3px;
    left: 0;
    height: 3px;
  }
}

@media (min-width: 1024px) {
  .scroll-progress {
    top: 0;
    right: -4px;
    bottom: 0;
    left: auto;
    width: 4px;
  }

  .scroll-progress-bar {
    background: linear-gradient(180deg, var(--c-primary), var(--c-accent));
    transform: scaleY(0);
    transform-origin: top;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.04em;
  text-align: center;
  text-decoration: none;
  border: none;
  cursor: pointer;
  background: transparent;
  color: var(--c-dark-gray);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: background var(--t-fast), color var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
  -webkit-tap-highlight-color: transparent;
}

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

.btn:focus-visible {
  outline: 3px solid var(--c-accent);
  outline-offset: 4px;
}

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

.btn-primary:hover {
  background: var(--c-primary-deep);
  color: var(--c-white);
  box-shadow: 0 6px 20px rgba(255, 78, 0, 0.45);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: var(--c-white);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.22);
  color: var(--c-white);
}

.btn-dark {
  background: var(--c-deep);
  color: var(--c-white);
}

.btn-dark:hover {
  background: var(--c-dark-gray);
  color: var(--c-white);
  box-shadow: 0 6px 20px rgba(26, 42, 58, 0.4);
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

@media (min-width: 640px) {
  .container {
    padding-left: 28px;
    padding-right: 28px;
  }
}

.section {
  padding-top: 48px;
  padding-bottom: 48px;
}

.section--tight {
  padding-top: 28px;
  padding-bottom: 28px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-primary-deep);
  margin: 0 0 8px;
}

.section-kicker::before {
  content: '';
  width: 24px;
  height: 3px;
  background: var(--c-primary);
  transform: skew(-20deg);
}

.section-title {
  font-family: var(--font-headline);
  font-size: clamp(26px, 4vw, 44px);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  color: var(--c-deep);
  margin: 0 0 16px;
}

.section-title--invert {
  color: var(--c-white);
}

.section-title--accent {
  color: var(--c-primary);
}

.section-desc {
  font-size: 16px;
  color: var(--c-gray-blue);
  max-width: 520px;
  margin-bottom: 32px;
}

.grid {
  display: grid;
  gap: var(--gap);
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: var(--gap);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .grid-2,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

.card {
  position: relative;
  padding: 24px;
  background: var(--c-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.card--score {
  background: var(--c-deep);
  color: var(--c-white);
  border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(26, 42, 58, 0.25);
}

.card--score h1,
.card--score h2,
.card--score h3,
.card--score h4 {
  color: var(--c-white);
}

.card--score .card-meta,
.card--score .section-desc {
  color: var(--c-gray-lite);
}

.card--dark {
  background: var(--c-deep);
  color: var(--c-white);
}

.card--dark h1,
.card--dark h2,
.card--dark h3,
.card--dark h4 {
  color: var(--c-white);
}

.tag {
  display: inline-block;
  padding: 4px 10px 3px;
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--c-light-orange);
  color: var(--c-primary-deep);
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 0 100%);
}

.tag--accent {
  background: var(--c-accent);
  color: var(--c-deep);
}

.tag--primary {
  background: var(--c-primary);
  color: var(--c-white);
}

.tag--dark {
  background: var(--c-deep);
  color: var(--c-accent);
}

.tag--new {
  background: var(--c-yellow);
  color: var(--c-deep);
}

.frame {
  position: relative;
  padding: 24px;
  background: var(--c-white);
  border: 2px solid var(--c-deep);
  box-shadow: 10px 10px 0 rgba(255, 78, 0, 0.18);
}

.frame::before,
.frame::after {
  content: '';
  position: absolute;
  z-index: 2;
  width: 24px;
  height: 24px;
  border-color: var(--c-primary);
  border-style: solid;
  pointer-events: none;
}

.frame::before {
  top: -4px;
  left: -4px;
  border-width: 4px 0 0 4px;
}

.frame::after {
  bottom: -4px;
  right: -4px;
  border-width: 0 4px 4px 0;
}

.frame--breakout {
  box-shadow: 12px 12px 0 var(--c-primary);
}

.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(255, 78, 0, 0.25) 0%, rgba(255, 78, 0, 0) 40%),
    linear-gradient(180deg, var(--c-deep) 0%, var(--c-dark-gray) 100%);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.media-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, transparent 48%, rgba(198, 255, 0, 0.14) 50%, transparent 56%),
    linear-gradient(115deg, transparent 58%, rgba(255, 78, 0, 0.22) 60%, transparent 66%);
  transform: translateX(-20%);
  transition: transform 0.6s var(--ease-sport);
  pointer-events: none;
}

.media-frame:hover::after {
  transform: translateX(20%);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin: 0 0 32px;
  list-style: none;
  font-size: 13px;
  color: var(--c-gray-blue);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.breadcrumb li + li::before {
  content: '/';
  font-family: var(--font-data);
  color: var(--c-gray-blue);
  margin-right: 4px;
}

.breadcrumb a {
  color: var(--c-gray-blue);
  text-decoration: none;
  transition: color var(--t-fast);
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--c-primary);
}

.breadcrumb [aria-current="page"] {
  color: var(--c-dark-gray);
  font-weight: 700;
  font-family: var(--font-data);
}

.data-mono {
  font-family: var(--font-data);
  font-feature-settings: 'tnum' 1;
  letter-spacing: 0.02em;
}

.page-heading {
  position: relative;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 4px solid var(--c-deep);
}

.page-heading::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 80px;
  height: 4px;
  background: var(--c-primary);
}

.page-kicker {
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-primary-deep);
  margin: 0 0 6px;
}

.page-title {
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: clamp(32px, 5vw, 56px);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--c-deep);
  margin: 0;
}

.page-desc {
  font-size: 16px;
  color: var(--c-gray-blue);
  max-width: 42em;
  margin-top: 8px;
}

.site-footer {
  position: relative;
  margin-top: auto;
  background: var(--c-deep);
  color: rgba(255, 255, 255, 0.75);
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-primary) 60%, var(--c-accent) 60%, var(--c-accent) 100%);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 56px 28px 40px;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.brand--footer {
  padding: 0;
}

.brand--footer .brand-symbol {
  width: 34px;
  height: 34px;
  font-size: 17px;
}

.footer-trust {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  margin: 0;
  max-width: 30em;
}

.footer-col {
  min-width: 0;
}

.footer-heading {
  display: inline-block;
  font-family: var(--font-headline);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-white);
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 3px solid var(--c-primary);
}

.footer-link-list a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 2.4;
  text-decoration: none;
  transition: color var(--t-fast), padding-left var(--t-fast);
}

.footer-link-list a:hover,
.footer-link-list a:focus-visible {
  color: var(--c-primary);
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-contact-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-contact-label {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent);
}

.footer-contact-value {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 28px;
  text-align: center;
}

.footer-copy {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.05em;
  margin: 0;
}

@media (max-width: 1023px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding-top: 44px;
  }

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

@media (max-width: 640px) {
  .footer-top {
    grid-template-columns: 1fr;
    padding: 40px 20px 32px;
  }

  .footer-bottom {
    padding: 16px 20px;
  }
}

@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;
  }

  .nav-rail-pulse {
    animation: none;
  }

  .media-frame::after {
    transform: none;
    transition: none;
  }

  .scroll-progress-bar {
    transition: none;
  }
}