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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scrollbar-color: var(--c-accent) var(--c-bg-deep);
  scrollbar-width: thin;
}

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text);
  background-color: var(--c-bg);
  background-image:
    radial-gradient(ellipse at 15% -5%, rgba(155, 92, 246, 0.1) 0%, transparent 55%),
    radial-gradient(ellipse at 90% 105%, rgba(57, 255, 142, 0.05) 0%, transparent 55%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

button {
  font: inherit;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  padding: 0;
}

:root {
  --c-bg: #0B1B3A;
  --c-bg-deep: #061226;
  --c-bg-card: #122247;
  --c-accent: #9B5CF6;
  --c-accent-2: #39FF8E;
  --c-silver: #A9B2C3;
  --c-text: #E6EAF2;
  --c-muted: #7A8699;
  --c-gold: #F3C64C;
  --font-head: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --w-max: 1280px;
  --h-header: 68px;
  --radius: 2px;
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 16px;
  --sp-4: 24px;
  --sp-5: 36px;
  --sp-6: 48px;
  --sp-7: 72px;
  --border-silver: 1px solid rgba(169, 178, 195, 0.26);
  --border-silver-soft: 1px solid rgba(169, 178, 195, 0.14);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25);
  --shadow-pop: 0 8px 32px rgba(0, 0, 0, 0.38);
  --z-fixed: 1000;
  --z-drawer: 1001;
  --z-top: 2000;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--c-text);
  margin-bottom: var(--sp-3);
}

h1 {
  font-size: clamp(32px, 5vw, 64px);
}

h2 {
  font-size: clamp(24px, 3.5vw, 36px);
}

h3 {
  font-size: clamp(18px, 2.5vw, 24px);
}

p {
  margin-bottom: var(--sp-3);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--c-bg-deep);
}

::-webkit-scrollbar-thumb {
  background: rgba(155, 92, 246, 0.6);
  border-radius: 0;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--c-accent);
}

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

.container {
  width: 100%;
  max-width: var(--w-max);
  margin: 0 auto;
  padding-left: clamp(var(--sp-3), 4vw, var(--sp-5));
  padding-right: clamp(var(--sp-3), 4vw, var(--sp-5));
}

.section {
  padding-top: var(--sp-7);
  padding-bottom: var(--sp-7);
}

.section--tight {
  padding-top: var(--sp-5);
  padding-bottom: var(--sp-5);
}

.grid {
  display: grid;
  gap: var(--sp-4);
}

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

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--c-accent), var(--c-accent-2));
  box-shadow: 0 0 8px rgba(57, 255, 142, 0.4);
  z-index: var(--z-top);
  pointer-events: none;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--sp-3);
  z-index: var(--z-top);
  padding: 10px 20px;
  background: var(--c-accent-2);
  color: var(--c-bg-deep);
  font-size: 14px;
  font-weight: 700;
  border-radius: 0 0 var(--radius) var(--radius);
  transition: top 0.2s ease;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-fixed);
  background-color: rgba(11, 27, 58, 0.96);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: var(--border-silver);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--c-accent) 0%, var(--c-accent-2) 70%, transparent 100%);
  opacity: 0.6;
  pointer-events: none;
}

.header-inner {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 0 clamp(var(--sp-3), 4vw, var(--sp-5));
  height: var(--h-header);
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-glyph {
  position: relative;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
}

.brand-glyph::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}

.brand-glyph::after {
  content: "";
  position: absolute;
  inset: 7px;
  background: var(--c-bg);
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}

.brand-text {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 900;
  line-height: 1.2;
  color: var(--c-text);
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.brand-text em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-accent);
  margin-left: 4px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 10px;
  margin-left: auto;
  border: var(--border-silver-soft);
  border-radius: var(--radius);
  background: var(--c-bg-card);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.nav-toggle:hover {
  border-color: var(--c-accent);
  background: rgba(155, 92, 246, 0.08);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--c-accent-2);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--c-accent-2);
}

.main-nav {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
  justify-content: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-silver);
  position: relative;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--c-accent-2);
  border-radius: 2px 2px 0 0;
  transition: width 0.2s ease;
}

.nav-link:hover {
  color: var(--c-text);
}

.nav-link:hover::after {
  width: 50%;
}

.nav-link[aria-current="page"] {
  color: var(--c-text);
}

.nav-link[aria-current="page"]::after {
  width: 100%;
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--c-accent);
  letter-spacing: 0.06em;
  line-height: 1;
}

.nav-label {
  font-weight: 500;
  letter-spacing: 0.02em;
}

.nav-user {
  flex-shrink: 0;
}

.nav-user-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(155, 92, 246, 0.14);
  border: 1px solid rgba(155, 92, 246, 0.38);
  color: var(--c-text);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius);
  transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.nav-user-link:hover {
  background: rgba(155, 92, 246, 0.26);
  border-color: var(--c-accent);
  box-shadow: 0 0 18px rgba(155, 92, 246, 0.22);
}

.nav-user-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent-2);
  box-shadow: 0 0 6px rgba(57, 255, 142, 0.7);
  flex-shrink: 0;
}

.nav-user-label {
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.site-footer {
  background-color: var(--c-bg-deep);
  border-top: 1px solid rgba(169, 178, 195, 0.2);
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 180px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-accent), transparent);
  z-index: 1;
}

.footer-inner {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: var(--sp-6) clamp(var(--sp-3), 4vw, var(--sp-5)) var(--sp-5);
  position: relative;
  background-image:
    linear-gradient(rgba(169, 178, 195, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(169, 178, 195, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}

.footer-inner::after {
  content: "";
  position: absolute;
  top: var(--sp-6);
  right: clamp(var(--sp-3), 4vw, var(--sp-5));
  width: 10px;
  height: 10px;
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  opacity: 0.3;
  pointer-events: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.7fr 1fr 1fr 1.5fr;
  gap: var(--sp-5);
  padding-bottom: var(--sp-5);
  border-bottom: var(--border-silver-soft);
}

.footer-block--brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-3);
}

.brand--footer .brand-glyph {
  width: 36px;
  height: 36px;
}

.brand--footer .brand-glyph::after {
  inset: 8px;
}

.brand--footer .brand-text {
  font-size: 20px;
}

.footer-trust {
  font-size: 13px;
  color: var(--c-muted);
  line-height: 1.8;
  max-width: 320px;
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid rgba(155, 92, 246, 0.35);
}

.footer-heading {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--c-silver);
  letter-spacing: 0.08em;
  margin-bottom: var(--sp-3);
  padding-bottom: 8px;
  border-bottom: var(--border-silver-soft);
}

.footer-heading::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--c-accent);
  transform: rotate(45deg);
  flex-shrink: 0;
}

.footer-links {
  display: grid;
  gap: 8px;
}

.footer-links a {
  font-size: 14px;
  color: var(--c-muted);
  transition: color 0.2s ease, padding-left 0.2s ease;
  display: inline-block;
}

.footer-links a:hover {
  color: var(--c-accent-2);
  padding-left: 4px;
}

.footer-contact {
  display: grid;
  gap: 10px;
  font-size: 13px;
  color: var(--c-muted);
  line-height: 1.6;
}

.footer-contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.footer-contact-label {
  color: var(--c-silver);
  font-family: var(--font-mono);
  font-size: 11px;
  flex-shrink: 0;
  min-width: 2.5em;
  padding-top: 1px;
}

.footer-service {
  margin-top: var(--sp-3);
  padding-top: var(--sp-3);
  border-top: 1px dashed rgba(169, 178, 195, 0.18);
  font-size: 12px;
  color: var(--c-muted);
  line-height: 1.7;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-3);
  padding-top: var(--sp-4);
  font-size: 13px;
  color: var(--c-muted);
}

.footer-bottom::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--c-accent);
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  flex-shrink: 0;
  opacity: 0.5;
}

.footer-copy {
  margin: 0;
  font-size: 13px;
}

.footer-icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-silver);
  letter-spacing: 0.04em;
  margin-left: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-body);
  color: #FFFFFF;
  background: var(--c-accent);
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
}

.btn:hover {
  background: #8550D4;
  box-shadow: 0 0 24px rgba(155, 92, 246, 0.28);
}

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

.btn-outline {
  background: transparent;
  border-color: rgba(155, 92, 246, 0.6);
  color: var(--c-accent);
}

.btn-outline:hover {
  background: rgba(155, 92, 246, 0.1);
  color: var(--c-text);
  box-shadow: 0 0 16px rgba(155, 92, 246, 0.14);
}

.btn-ghost {
  background: transparent;
  border-color: var(--c-silver);
  color: var(--c-silver);
}

.btn-ghost:hover {
  background: rgba(57, 255, 142, 0.05);
  border-color: var(--c-accent-2);
  color: var(--c-accent-2);
  box-shadow: none;
}

.btn-compact {
  padding: 6px 14px;
  font-size: 13px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-muted);
  padding: var(--sp-4) 0;
}

.breadcrumbs a {
  color: var(--c-silver);
  transition: color 0.2s ease;
}

.breadcrumbs a:hover {
  color: var(--c-accent-2);
}

.breadcrumbs [aria-current="page"] {
  color: var(--c-text);
}

.breadcrumb-sep {
  color: var(--c-muted);
  opacity: 0.45;
  user-select: none;
}

.card {
  background: var(--c-bg-card);
  border: var(--border-silver-soft);
  border-radius: var(--radius);
  padding: var(--sp-4);
  position: relative;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  border-color: rgba(155, 92, 246, 0.45);
  box-shadow: var(--shadow-card);
}

.card--accent {
  border-left: 3px solid var(--c-accent);
}

.card--green {
  border-left: 3px solid var(--c-accent-2);
}

.card--gold {
  border-left: 3px solid var(--c-gold);
}

.data-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 10px;
  background: rgba(155, 92, 246, 0.1);
  border: 1px solid rgba(155, 92, 246, 0.3);
  color: var(--c-silver);
  border-radius: var(--radius);
  white-space: nowrap;
}

.data-tag--live {
  color: var(--c-accent-2);
  border-color: rgba(57, 255, 142, 0.35);
  background: rgba(57, 255, 142, 0.08);
}

.data-tag--gold {
  color: var(--c-gold);
  border-color: rgba(243, 198, 76, 0.32);
  background: rgba(243, 198, 76, 0.07);
}

.data-tag--dim {
  color: var(--c-muted);
  border-color: rgba(169, 178, 195, 0.2);
  background: transparent;
}

.data-value {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--c-text);
  line-height: 1.2;
}

.data-value--accent {
  color: var(--c-accent);
}

.data-value--green {
  color: var(--c-accent-2);
}

.data-value--gold {
  color: var(--c-gold);
}

.data-label {
  font-size: 12px;
  color: var(--c-muted);
  letter-spacing: 0.05em;
}

.section-heading {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-3);
  margin-bottom: var(--sp-4);
}

.section-heading-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-accent);
  border: 1px solid rgba(155, 92, 246, 0.35);
  background: rgba(155, 92, 246, 0.08);
  padding: 2px 8px;
  line-height: 1.4;
  border-radius: var(--radius);
}

.section-heading-title {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 900;
  line-height: 1.3;
  margin: 0;
}

.section-heading-desc {
  margin-left: auto;
  font-size: 13px;
  color: var(--c-muted);
}

.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--c-bg-deep);
  border: var(--border-silver-soft);
  border-radius: var(--radius);
  aspect-ratio: 16 / 9;
}

.img-frame::after {
  content: attr(data-caption);
  position: absolute;
  inset: auto 0 0 0;
  padding: 32px 12px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-silver);
  background: linear-gradient(to top, rgba(6, 18, 38, 0.85), transparent);
  z-index: 1;
  pointer-events: none;
}

.img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.img-frame--square {
  aspect-ratio: 1 / 1;
}

.img-frame--wide {
  aspect-ratio: 21 / 9;
}

.note {
  background: rgba(155, 92, 246, 0.08);
  border-left: 3px solid var(--c-accent);
  padding: var(--sp-3) var(--sp-4);
  font-size: 14px;
  color: var(--c-silver);
  border-radius: 0 var(--radius) var(--radius) 0;
  line-height: 1.7;
}

.note p:last-child {
  margin-bottom: 0;
}

.gradient-text {
  background: linear-gradient(120deg, var(--c-text) 35%, var(--c-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.dataline {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--c-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.dataline::before {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(169, 178, 195, 0.4));
}

.dataline::after {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--c-accent);
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  flex-shrink: 0;
}

@media (max-width: 1100px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-4);
  }

  .footer-inner::after {
    display: none;
  }
}

@media (max-width: 992px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: var(--h-header);
    right: 0;
    bottom: 0;
    width: min(320px, 84vw);
    background: var(--c-bg-card);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: var(--sp-5) var(--sp-4);
    transform: translateX(105%);
    transition: transform 0.25s ease;
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.42);
    border-left: 1px solid rgba(169, 178, 195, 0.18);
    overflow-y: auto;
    z-index: var(--z-drawer);
  }

  .main-nav[data-open] {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    flex: none;
    margin-bottom: var(--sp-5);
  }

  .nav-item {
    border-bottom: 1px solid rgba(169, 178, 195, 0.1);
  }

  .nav-link {
    padding: 12px 8px;
    font-size: 15px;
  }

  .nav-link::after {
    bottom: 6px;
    left: 8px;
    right: auto;
    transform: none;
    width: 24px;
    height: 2px;
  }

  .nav-link:hover::after,
  .nav-link[aria-current="page"]::after {
    width: 24px;
    transform: none;
  }

  .nav-link:hover::after {
    opacity: 0.6;
  }

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

  .nav-user {
    margin-left: 0;
    padding-top: var(--sp-4);
    border-top: 1px solid rgba(169, 178, 195, 0.18);
  }

  .nav-user-link {
    width: 100%;
    justify-content: center;
    padding-top: 10px;
    padding-bottom: 10px;
  }

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

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-4);
  }

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

  .footer-icp {
    margin-left: 0;
  }

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

@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;
  }
}