:root {
  --c-space: #0A1128;
  --c-deep: #132238;
  --c-red: #E63946;
  --c-green: #2AFF68;
  --c-metal: #8D99AE;
  --c-white: #F1FAEE;
  --c-silver: #C8D5E3;
  --c-yellow: #FFD166;
  --font-head: Impact, 'Arial Black', sans-serif;
  --font-sub: 'Roboto Condensed', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', sans-serif;
  --font-mono: 'Roboto Mono', 'Consolas', monospace;
  --r-lg: 28px;
  --r-md: 18px;
  --r-full: 999px;
  --shadow-card: 0 18px 40px rgba(3, 8, 20, 0.35);
  --ease: cubic-bezier(0.65, 0, 0.35, 1);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--c-space);
  background-image:
    linear-gradient(115deg, transparent 0 62%, rgba(230, 57, 70, 0.055) 62% 63%, transparent 63% 100%),
    linear-gradient(65deg, transparent 0 78%, rgba(42, 255, 104, 0.045) 78% 79.5%, transparent 79.5% 100%),
    radial-gradient(1200px 600px at 85% -10%, rgba(19, 34, 56, 0.8), transparent 60%);
  background-attachment: fixed;
  color: var(--c-white);
  font-family: var(--font-body);
  line-height: 1.75;
}

h1, h2, h3, h4, p {
  margin: 0;
}

h1, h2, h3, h4 {
  font-family: var(--font-sub);
  line-height: 1.25;
}

a {
  color: var(--c-green);
}

a:hover {
  color: var(--c-white);
}

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

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

:focus-visible {
  outline: 2px solid var(--c-green);
  outline-offset: 3px;
  border-radius: 6px;
}

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

.skip-link {
  position: fixed;
  top: -120px;
  left: 18px;
  z-index: 3000;
  padding: 12px 22px;
  border-radius: var(--r-full);
  background: var(--c-green);
  color: #04241A;
  text-decoration: none;
  font-weight: 700;
  transition: top 0.22s var(--ease);
}

.skip-link:focus {
  top: 18px;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 2600;
  pointer-events: none;
}

.scroll-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--c-green), var(--c-yellow), var(--c-red));
  transform: scaleX(0);
  transform-origin: left center;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1200;
  background: linear-gradient(180deg, rgba(10, 17, 40, 0.96), rgba(10, 17, 40, 0.88));
  border-bottom: 1px solid rgba(138, 153, 174, 0.16);
  transition: border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 140px;
  height: 2px;
  background: var(--c-red);
  clip-path: polygon(0 0, 100% 0, 84% 100%, 0 100%);
  transition: width 0.3s var(--ease);
}

.site-header[data-scrolled="true"] {
  border-bottom-color: rgba(42, 255, 104, 0.35);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

.site-header[data-scrolled="true"]::after {
  width: 320px;
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1400px;
  min-height: 80px;
  margin-inline: auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

.header-inner::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 22px;
  bottom: 22px;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(138, 153, 174, 0.35), transparent);
  pointer-events: none;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 5px;
  text-decoration: none;
  padding-block: 12px;
}

.brand-title {
  font-family: var(--font-head);
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1;
  color: var(--c-white);
  letter-spacing: 0.08em;
}

.brand-accent {
  color: var(--c-red);
  font-style: normal;
}

.brand-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 2px 10px;
  border-radius: var(--r-full);
  border: 1px solid rgba(42, 255, 104, 0.3);
  background: rgba(42, 255, 104, 0.08);
}

.brand-status-text {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-green);
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-green);
  box-shadow: 0 0 10px rgba(42, 255, 104, 0.7);
  animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.4;
    transform: scale(0.78);
  }
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.header-nav a {
  position: relative;
  display: inline-block;
  padding: 12px 14px;
  color: var(--c-silver);
  font-family: var(--font-sub);
  font-size: 15px;
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.header-nav a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 5px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-red);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.22s var(--ease);
}

.header-nav a:hover,
.header-nav a:focus-visible,
.header-nav a[aria-current="page"] {
  color: var(--c-white);
}

.header-nav a:hover::after,
.header-nav a:focus-visible::after,
.header-nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left center;
}

.header-nav a[aria-current="page"] {
  color: var(--c-white);
}

.header-nav a.nav-help {
  margin-left: 10px;
  padding: 9px 20px;
  border-radius: var(--r-full);
  border: 1px solid rgba(230, 57, 70, 0.5);
  background: rgba(230, 57, 70, 0.14);
  color: var(--c-white);
}

.header-nav a.nav-help::after {
  display: none;
}

.header-nav a.nav-help:hover,
.header-nav a.nav-help[aria-current="page"] {
  background: var(--c-red);
  border-color: var(--c-red);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
}

@media (max-width: 1023px) {
  .header-inner {
    min-height: 68px;
  }

  .header-inner::before {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 46px;
    height: 46px;
    padding: 10px;
    border-radius: 14px;
    border: 1px solid rgba(138, 153, 174, 0.3);
    background: rgba(19, 34, 56, 0.9);
    cursor: pointer;
  }

  .nav-toggle-line {
    display: block;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background: var(--c-white);
    transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
  }

  .nav-toggle[aria-expanded="true"] .l1 {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .l2 {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .l3 {
    transform: translateY(-7px) rotate(-45deg);
  }

  .header-nav {
    position: fixed;
    top: 84px;
    left: 16px;
    right: 16px;
    z-index: 1200;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 16px;
    border-radius: 22px;
    background: var(--c-deep);
    border: 1px solid rgba(138, 153, 174, 0.25);
    box-shadow: 0 24px 50px rgba(0, 0, 0, 0.45);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
  }

  .header-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .header-nav a {
    display: block;
    padding: 13px 18px;
    border-bottom: 1px solid rgba(138, 153, 174, 0.1);
  }

  .header-nav a::after {
    display: none;
  }

  .header-nav a[aria-current="page"] {
    color: var(--c-white);
    background: rgba(230, 57, 70, 0.12);
    border-radius: 12px;
  }

  .header-nav a.nav-help {
    margin-left: 0;
    margin-top: 8px;
    border: 1px solid rgba(230, 57, 70, 0.5);
    text-align: center;
  }
}

.nav-locked {
  overflow: hidden;
}

.site-footer {
  position: relative;
  margin-top: auto;
  overflow: hidden;
  background: linear-gradient(180deg, var(--c-space) 0%, #060B1C 100%);
  border-top: 1px solid rgba(138, 153, 174, 0.14);
}

.footer-track {
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--c-green) 0 14px,
    transparent 14px 22px,
    var(--c-red) 22px 34px,
    transparent 34px 46px
  );
  opacity: 0.32;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
  max-width: 1240px;
  margin-inline: auto;
  padding: clamp(36px, 6vw, 64px) clamp(20px, 4vw, 48px) 40px;
}

.footer-title {
  margin: 12px 0 6px;
  font-family: var(--font-head);
  font-size: 24px;
  letter-spacing: 0.06em;
  color: var(--c-white);
}

.footer-slogan {
  max-width: 320px;
  font-size: 14px;
  color: var(--c-silver);
}

.footer-note {
  position: relative;
  display: inline-block;
  margin-top: 18px;
  padding-left: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-yellow);
}

.footer-note::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  bottom: 0.2em;
  width: 3px;
  border-radius: 3px;
  background: var(--c-yellow);
}

.footer-heading {
  display: block;
  margin-bottom: 16px;
  font-family: var(--font-sub);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-metal);
}

.footer-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.footer-links a {
  position: relative;
  color: var(--c-silver);
  text-decoration: none;
  padding-bottom: 2px;
  transition: color 0.2s var(--ease);
}

.footer-links a::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: -1px;
  height: 1px;
  background: var(--c-green);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.2s var(--ease);
}

.footer-links a:hover {
  color: var(--c-white);
}

.footer-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.footer-contact p {
  margin: 0 0 8px;
  color: var(--c-silver);
  font-size: 14px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  align-items: center;
  max-width: 1240px;
  margin-inline: auto;
  padding: 20px clamp(20px, 4vw, 48px);
  border-top: 1px solid rgba(138, 153, 174, 0.12);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-metal);
}

.footer-icp {
  letter-spacing: 0.08em;
}

.top-link {
  position: fixed;
  right: clamp(16px, 3vw, 32px);
  bottom: clamp(16px, 4vw, 32px);
  z-index: 1300;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: none;
  background: var(--c-red);
  color: var(--c-white);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(230, 57, 70, 0.35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), background 0.2s, visibility 0.22s;
}

.top-link[data-active="true"] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.top-link:hover {
  background: var(--c-green);
  color: #06281A;
}

@media (max-width: 860px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

@media (max-width: 640px) {
  .brand-title {
    font-size: 18px;
  }

  .brand-status-text {
    display: none;
  }

  .brand-status {
    padding: 4px;
    border-radius: 50%;
  }
}

.container {
  width: min(1240px, calc(100% - clamp(24px, 5vw, 64px)));
  margin-inline: auto;
}

.section-block {
  padding-block: clamp(56px, 9vw, 104px);
}

.section-header {
  max-width: 780px;
  margin-bottom: clamp(28px, 5vw, 48px);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-family: var(--font-sub);
  font-size: 13px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-green);
}

.section-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-green);
}

.section-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(34px, 6vw, 72px);
  line-height: 1.02;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--c-white);
}

.section-note {
  margin-top: 14px;
  max-width: 46em;
  color: var(--c-silver);
  font-size: 15px;
}

.text-vertical {
  display: inline-block;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-metal);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--r-full);
  padding: 12px 26px;
  font-family: var(--font-sub);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.btn:active {
  transform: translateY(1px);
}

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

.btn-red:hover {
  background: #FF4D5A;
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(230, 57, 70, 0.28);
  color: var(--c-white);
}

.btn-ghost {
  border-color: rgba(138, 153, 174, 0.6);
  color: var(--c-silver);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--c-green);
  color: var(--c-green);
  transform: translateY(-2px);
}

.data-card {
  position: relative;
  overflow: hidden;
  padding: 24px;
  border-radius: var(--r-lg);
  background: linear-gradient(145deg, rgba(19, 34, 56, 0.92), rgba(10, 17, 40, 0.86));
  border: 1px solid rgba(138, 153, 174, 0.2);
  box-shadow: var(--shadow-card);
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.data-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: 0 4px 4px 0;
  background: var(--c-green);
  transform: scaleY(0);
  transition: transform 0.22s var(--ease);
}

.data-card:hover {
  border-color: rgba(42, 255, 104, 0.4);
  transform: translateY(-4px);
}

.data-card:hover::before {
  transform: scaleY(1);
}

.data-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.data-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-metal);
}

.data-value {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1;
  font-weight: 700;
  color: var(--c-white);
}

.data-delta {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.trend-up {
  color: var(--c-green);
}

.trend-down {
  color: var(--c-red);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--r-full);
  font-family: var(--font-sub);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.pill-green {
  color: var(--c-green);
  border: 1px solid rgba(42, 255, 104, 0.35);
  background: rgba(42, 255, 104, 0.08);
}

.pill-red {
  color: #FF8A93;
  border: 1px solid rgba(230, 57, 70, 0.45);
  background: rgba(230, 57, 70, 0.1);
}

.pill-yellow {
  color: var(--c-yellow);
  border: 1px solid rgba(255, 209, 102, 0.4);
  background: rgba(255, 209, 102, 0.08);
}

.pill .live-dot {
  width: 6px;
  height: 6px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  font-family: var(--font-sub);
  font-size: 13px;
  color: var(--c-metal);
}

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

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

.breadcrumb a[aria-current="page"],
.breadcrumb span[aria-current="page"] {
  color: var(--c-white);
}

.grid {
  display: grid;
  gap: 24px;
}

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

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

@media (max-width: 900px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

.skill-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  position: relative;
}

.skill-step-number {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--c-red);
  color: var(--c-white);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}

.skill-step-body {
  padding-bottom: 24px;
}

.skill-step-title {
  font-family: var(--font-sub);
  font-size: 18px;
  font-weight: 700;
  color: var(--c-white);
}

.skill-step-desc {
  margin-top: 4px;
  color: var(--c-silver);
  font-size: 14px;
}

.link-underline {
  color: var(--c-silver);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-position: 0 100%;
  background-size: 0 1px;
  background-repeat: no-repeat;
  transition: background-size 0.2s var(--ease), color 0.2s;
}

.link-underline:hover {
  color: var(--c-white);
  background-size: 100% 1px;
}

.speed-line {
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--c-red) 0 25%, var(--c-green) 25% 50%, transparent 50% 100%);
  opacity: 0.6;
}

@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;
  }
}