:root {
  --c-bg: #0a1a2f;
  --c-panel: #11223d;
  --c-ink: #0b0f19;
  --c-green: #00ff9d;
  --c-green-soft: rgba(0, 255, 157, 0.12);
  --c-amber: #ffb000;
  --c-paper: #f5efe0;
  --c-slate: #8892b0;
  --c-border: #233554;
  --c-danger: #ff3b3b;
  --c-purple: #bd93f9;
  --font-heading: "Archivo Black", "Arial Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --fs-base: 16px;
  --fs-sm: 0.875rem;
  --fs-xs: 0.75rem;
  --fs-lg: 1.125rem;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --space-6: 4rem;
  --topbar-h: 72px;
  --rail-w: 88px;
  --content-max: 1240px;
  --radius: 6px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.28);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { min-height: 100vh; background: var(--c-bg); color: var(--c-paper); font-family: var(--font-body); font-size: var(--fs-base); line-height: 1.75; }
main { display: block; }
img, picture, video, canvas, svg { display: block; max-width: 100%; }
ul, ol { list-style: none; }
a { color: var(--c-green); text-decoration: none; }
a:hover { color: #9bffd9; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
[hidden] { display: none !important; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); color: var(--c-paper); line-height: 1.25; overflow-wrap: break-word; }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); letter-spacing: -0.02em; margin-bottom: 1rem; }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); letter-spacing: -0.01em; margin-bottom: 0.75rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
p { margin-bottom: 1rem; }
code, kbd, samp { font-family: var(--font-mono); font-size: 0.9em; color: var(--c-green); }
strong { color: var(--c-paper); }
.site-main { display: block; min-height: 70vh; padding-top: var(--topbar-h); }
#main-content { scroll-margin-top: calc(var(--topbar-h) + 12px); }
.container { width: 100%; max-width: var(--content-max); margin-inline: auto; padding-inline: clamp(20px, 4vw, 48px); }
.container--narrow { max-width: 880px; }
.grid { display: grid; gap: var(--space-4); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
@media (max-width: 768px) { .grid-cols-2, .grid-cols-3, .grid-cols-12 { grid-template-columns: 1fr; } }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 5000; background: var(--c-green); color: var(--c-ink); padding: 10px 18px; border-radius: var(--radius); font-weight: 700; font-size: 0.9rem; transform: translateY(-260%); transition: transform 0.25s var(--ease); }
.skip-link:focus-visible { transform: translateY(0); color: var(--c-ink); outline: 0; }
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 1000; background: linear-gradient(180deg, rgba(11, 15, 25, 0.97), rgba(10, 26, 47, 0.94)); border-bottom: 1px solid var(--c-border); }
.scroll-progress { position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--c-green), var(--c-amber)); transform: scaleX(var(--progress, 0)); transform-origin: 0 50%; z-index: 5; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: var(--topbar-h); padding: 0 clamp(16px, 3vw, 40px); }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--c-paper); font-family: var(--font-heading); font-size: 1.3rem; letter-spacing: 0.01em; line-height: 1; white-space: nowrap; }
.brand:hover { color: var(--c-paper); }
.brand-icon { width: 32px; height: 32px; color: var(--c-amber); filter: drop-shadow(0 0 6px rgba(255, 176, 0, 0.35)); }
.brand-text { font-size: 1em; }
.brand-cn { font-family: var(--font-body); font-size: 0.72em; font-weight: 700; letter-spacing: 0.08em; color: var(--c-green); margin-left: 3px; }
.header-cta { display: inline-flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; color: var(--c-ink); background: var(--c-green); padding: 9px 16px; border-radius: var(--radius); white-space: nowrap; transition: background 0.2s, box-shadow 0.2s; }
.header-cta:hover { color: var(--c-ink); background: #9bffd9; box-shadow: 0 0 18px rgba(0, 255, 157, 0.4); }
.nav-toggle { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border: 1px solid var(--c-border); border-radius: var(--radius); background: var(--c-panel); color: var(--c-paper); transition: border-color 0.2s; }
.nav-toggle:hover { border-color: var(--c-green); }
.nav-toggle-box { position: relative; width: 18px; height: 12px; }
.nav-toggle-box span { position: absolute; left: 0; width: 18px; height: 2px; background: currentColor; border-radius: 2px; transition: top 0.2s, transform 0.2s, opacity 0.2s; }
.nav-toggle-box span:nth-child(1) { top: 0; }
.nav-toggle-box span:nth-child(2) { top: 5px; }
.nav-toggle-box span:nth-child(3) { top: 10px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(1) { top: 5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(3) { top: 5px; transform: rotate(-45deg); }
.site-nav { position: fixed; top: var(--topbar-h); left: 0; bottom: 0; width: var(--rail-w); z-index: 990; display: flex; flex-direction: column; justify-content: space-between; gap: 24px; padding: 32px 0 28px; background: rgba(11, 15, 25, 0.95); border-right: 1px solid var(--c-border); overflow-y: auto; transition: transform 0.3s var(--ease); }
.rail-indicator { position: absolute; left: 50%; top: 24px; bottom: 24px; width: 1px; transform: translateX(-50%); }
.rail-indicator__track { position: absolute; inset: 0; width: 1px; background: var(--c-border); }
.rail-indicator__dot { position: absolute; left: 0; top: 0; width: 7px; height: 7px; background: var(--c-green); border-radius: 50%; box-shadow: 0 0 12px rgba(0, 255, 157, 0.8); transform: translate(-50%, -50%); top: var(--rail-pos, 0); }
.nav-list { display: flex; flex-direction: column; gap: 4px; }
.nav-link { position: relative; display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 10px 4px; color: var(--c-slate); font-family: var(--font-mono); font-size: 0.7rem; line-height: 1.3; letter-spacing: 0.04em; text-align: center; border-left: 2px solid transparent; border-radius: 0 var(--radius) var(--radius) 0; transition: color 0.2s, background 0.2s, border-color 0.2s; }
.nav-link__index { font-size: 0.58rem; color: var(--c-amber); opacity: 0.8; }
.nav-link__text { font-weight: 600; }
.nav-link:hover, .nav-link[aria-current="page"] { color: var(--c-paper); background: linear-gradient(90deg, rgba(0, 255, 157, 0.14), transparent 85%); border-left-color: var(--c-green); }
.nav-link[aria-current="page"] .nav-link__index { color: var(--c-green); opacity: 1; }
.nav-cta { display: flex; flex-direction: column; gap: 6px; padding: 16px 12px 0; border-top: 1px solid var(--c-border); }
.nav-cta .btn { width: 100%; }
.nav-cta-note { font-family: var(--font-mono); font-size: 0.58rem; color: var(--c-slate); text-align: center; letter-spacing: 0.06em; }
.nav-backdrop { position: fixed; z-index: 980; top: var(--topbar-h); left: 0; right: 0; bottom: 0; background: rgba(4, 8, 18, 0.74); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity 0.25s, visibility 0.25s; }
.site-header[data-nav-open="true"] .nav-backdrop { opacity: 1; visibility: visible; pointer-events: auto; }
body.nav-lock { overflow: hidden; }
@media (min-width: 1024px) {
  .nav-toggle { display: none; }
  .topbar { padding-left: calc(var(--rail-w) + 24px); }
  .site-main, .site-footer { margin-left: var(--rail-w); }
}
@media (max-width: 1023px) {
  .topbar { padding-inline: 16px; }
  .site-nav { width: min(320px, 84vw); transform: translateX(-105%); justify-content: flex-start; padding: 20px 18px 32px; box-shadow: 24px 0 60px rgba(0, 0, 0, 0.5); }
  .site-header[data-nav-open="true"] .site-nav { transform: translateX(0); }
  .nav-list { gap: 0; }
  .nav-link { flex-direction: row; align-items: center; justify-content: flex-start; gap: 12px; padding: 13px 14px; font-size: 0.85rem; border-left: 2px solid var(--c-border); border-bottom: 1px solid var(--c-border); border-radius: 0; letter-spacing: 0.05em; }
  .nav-link__index { width: 26px; flex: 0 0 auto; }
  .nav-cta { margin-top: auto; }
  .rail-indicator { display: none; }
}
@media (max-width: 380px) {
  .brand-cn { display: none; }
  .header-cta { display: none; }
}
.breadcrumbs { margin-bottom: var(--space-5); font-family: var(--font-mono); font-size: 0.78rem; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 6px; }
.breadcrumbs li { display: inline-flex; align-items: center; }
.breadcrumbs li + li::before { content: "/"; margin-right: 6px; color: var(--c-border); }
.breadcrumbs a { color: var(--c-slate); }
.breadcrumbs a:hover { color: var(--c-green); }
.breadcrumbs [aria-current="page"] { color: var(--c-paper); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 22px; border-radius: var(--radius); font-family: var(--font-mono); font-size: 0.85rem; font-weight: 700; letter-spacing: 0.06em; line-height: 1.2; white-space: nowrap; border: 1px solid transparent; cursor: pointer; transition: transform 0.18s var(--ease), background 0.18s, border-color 0.18s, box-shadow 0.18s; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--c-green); color: var(--c-ink); }
.btn-primary:hover { background: #8fffd0; color: var(--c-ink); box-shadow: 0 0 20px rgba(0, 255, 157, 0.35); }
.btn-ghost { border-color: var(--c-border); background: transparent; color: var(--c-paper); }
.btn-ghost:hover { border-color: var(--c-green); color: var(--c-green); }
.btn-amber { background: var(--c-amber); color: var(--c-ink); }
.btn-amber:hover { background: #ffcf5c; color: var(--c-ink); box-shadow: 0 0 20px rgba(255, 176, 0, 0.3); }
.btn-sm { padding: 7px 14px; font-size: 0.75rem; }
.btn-lg { padding: 16px 32px; font-size: 1rem; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border: 1px solid var(--c-border); border-radius: 999px; background: var(--c-panel); color: var(--c-slate); font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.08em; white-space: nowrap; }
.badge--green { color: var(--c-green); border-color: rgba(0, 255, 157, 0.3); background: rgba(0, 255, 157, 0.06); }
.badge--amber { color: var(--c-amber); border-color: rgba(255, 176, 0, 0.3); background: rgba(255, 176, 0, 0.06); }
.data-chip { display: inline-block; font-family: var(--font-mono); font-size: 0.8rem; color: var(--c-green); background: rgba(0, 255, 157, 0.1); border: 1px solid rgba(0, 255, 157, 0.2); padding: 2px 8px; border-radius: 4px; }
.sg { position: relative; padding-block: clamp(64px, 8vw, 112px); }
.sg__index { display: block; font-family: var(--font-heading); font-size: clamp(3rem, 7vw, 5.5rem); line-height: 1; color: rgba(245, 239, 224, 0.08); letter-spacing: -0.02em; margin-bottom: 0.25rem; user-select: none; }
.sg__title { max-width: 20ch; }
.sg__lead { color: var(--c-slate); font-size: var(--fs-lg); max-width: 680px; }
.sg__divider { border: 0; border-top: 1px solid var(--c-border); margin-block: var(--space-4); }
.panel { padding: clamp(18px, 3vw, 32px); background: var(--c-panel); border: 1px solid var(--c-border); border-radius: var(--radius); box-shadow: 0 4px 18px rgba(0, 0, 0, 0.18); }
.panel--glass { background: rgba(17, 34, 61, 0.72); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.panel--accent { border-top: 2px solid var(--c-green); }
.media-frame { position: relative; overflow: hidden; min-height: 150px; background: linear-gradient(145deg, var(--c-panel), var(--c-ink)); border: 1px solid var(--c-border); border-radius: var(--radius); }
.media-frame::before { content: ""; position: absolute; inset: 0; z-index: 1; background-image: linear-gradient(30deg, rgba(0, 255, 157, 0.055) 12%, transparent 12.5%, transparent 87%, rgba(255, 176, 0, 0.055) 87.5%, rgba(255, 176, 0, 0.055)), linear-gradient(150deg, rgba(0, 255, 157, 0.04) 12%, transparent 12.5%, transparent 87%, rgba(255, 176, 0, 0.04) 87.5%, rgba(255, 176, 0, 0.04)); background-size: 42px 72px; pointer-events: none; }
.media-frame::after { content: ""; position: absolute; top: 8px; right: 8px; z-index: 2; width: 24px; height: 24px; border-top: 1px solid var(--c-amber); border-right: 1px solid var(--c-amber); opacity: 0.75; pointer-events: none; }
.media-frame--16-9 { aspect-ratio: 16 / 9; min-height: 0; }
.media-frame--4-3 { aspect-ratio: 4 / 3; min-height: 0; }
.media-frame--1-1 { aspect-ratio: 1 / 1; min-height: 0; }
.media-frame--hero { aspect-ratio: 21 / 9; min-height: 320px; }
.media-frame > img, .media-frame > picture, .media-frame > video { position: relative; z-index: 0; width: 100%; height: 100%; object-fit: cover; }
.media-frame__meta { position: absolute; left: 10px; bottom: 10px; z-index: 3; max-width: calc(100% - 20px); padding: 4px 8px; background: rgba(11, 15, 25, 0.72); border-left: 2px solid var(--c-green); color: var(--c-green); font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.04em; }
.accordion { margin-bottom: 12px; background: var(--c-panel); border: 1px solid var(--c-border); border-radius: var(--radius); }
.accordion summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 18px; font-family: var(--font-heading); font-size: 1rem; color: var(--c-paper); cursor: pointer; list-style: none; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { content: "+"; font-family: var(--font-mono); font-size: 1.1rem; color: var(--c-green); }
.accordion[open] summary::after { content: "−"; color: var(--c-amber); }
.accordion .accordion-body { padding: 0 18px 18px; color: var(--c-slate); }
.accordion .accordion-body > * + * { margin-top: 8px; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.data-table caption { text-align: left; margin-bottom: 8px; font-family: var(--font-mono); font-size: 0.75rem; color: var(--c-amber); }
.data-table th, .data-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--c-border); }
.data-table th { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-amber); }
.data-table tbody tr:hover { background: rgba(0, 255, 157, 0.05); }
.data-table tbody tr:last-child td { border-bottom: 0; }
.timeline { position: relative; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 1px; background: var(--c-border); }
.timeline__item { position: relative; padding-left: 28px; padding-bottom: 22px; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before { content: ""; position: absolute; left: 5px; top: 9px; width: 9px; height: 9px; border-radius: 50%; background: var(--c-green); box-shadow: 0 0 8px rgba(0, 255, 157, 0.5); }
.timeline__item--milestone::before { background: var(--c-amber); box-shadow: 0 0 10px rgba(255, 176, 0, 0.5); }
.timeline__term { font-family: var(--font-mono); font-size: 0.8rem; color: var(--c-amber); display: block; margin-bottom: 2px; }
.timeline__desc { color: var(--c-slate); font-size: 0.9rem; }
.index-list { border-top: 1px solid var(--c-border); }
.index-list li { display: flex; gap: 16px; align-items: baseline; padding: 12px 4px; border-bottom: 1px solid var(--c-border); }
.index-list__num { font-family: var(--font-mono); font-size: 0.8rem; color: var(--c-green); min-width: 3ch; flex: 0 0 auto; }
.index-list__title { color: var(--c-paper); font-weight: 600; }
.index-list__desc { color: var(--c-slate); font-size: 0.85rem; margin-left: auto; text-align: right; }
html.js [data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity 0.55s var(--ease), transform 0.55s var(--ease); }
html.js [data-reveal].is-revealed { opacity: 1; transform: none; }
[data-scrollspy] { border-left: 2px solid transparent; transition: border-color 0.3s, background 0.3s; }
[data-scrollspy].is-onscroll { border-left-color: var(--c-green); }
[data-scrollspy-map] [data-scrollspy-item] { display: block; padding: 6px 0 6px 12px; border-left: 2px solid var(--c-border); color: var(--c-slate); font-size: 0.9rem; transition: color 0.2s, border-color 0.2s; }
[data-scrollspy-map] [data-scrollspy-item].is-active { color: var(--c-green); border-left-color: var(--c-green); font-weight: 600; }
.site-footer { position: relative; background: var(--c-ink); border-top: 1px solid var(--c-border); }
.site-footer::before { content: ""; position: absolute; top: -1px; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, var(--c-green), var(--c-amber)); opacity: 0.45; }
.footer-inner { max-width: var(--content-max); margin-inline: auto; padding: clamp(48px, 6vw, 80px) clamp(20px, 4vw, 48px) 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.25fr; gap: clamp(24px, 4vw, 48px); padding-bottom: 48px; }
.footer-brand .brand { margin-bottom: 18px; }
.footer-trust { max-width: 44ch; color: var(--c-slate); font-size: 0.9rem; line-height: 1.85; border-left: 2px solid var(--c-border); padding-left: 14px; }
.footer-title { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--c-amber); }
.footer-title::before { content: ""; width: 16px; height: 2px; background: var(--c-green); }
.footer-links { display: grid; gap: 8px; }
.footer-links a { color: var(--c-slate); font-size: 0.9rem; transition: color 0.2s, padding-left 0.2s; }
.footer-links a:hover { color: var(--c-green); padding-left: 4px; }
.footer-contact-line { display: flex; gap: 8px; margin-bottom: 8px; font-family: var(--font-mono); font-size: 0.8rem; color: var(--c-slate); }
.footer-contact-line::before { content: "›"; color: var(--c-green); }
.footer-contact-line a { color: var(--c-paper); }
.footer-contact-line a:hover { color: var(--c-green); }
.footer-note { margin-top: 16px; font-size: 0.78rem; color: var(--c-slate); line-height: 1.7; }
.footer-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding: 22px 0; border-top: 1px solid var(--c-border); font-family: var(--font-mono); font-size: 0.72rem; color: var(--c-slate); }
.footer-legal { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-legal a { color: var(--c-slate); }
.footer-legal a:hover { color: var(--c-green); }
.footer-icp { color: var(--c-slate); }
.footer-copy { color: var(--c-slate); }
.u-mono { font-family: var(--font-mono); }
:focus-visible { outline: 2px solid var(--c-green); outline-offset: 3px; border-radius: 2px; }
@media (max-width: 1023px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  html.js [data-reveal] { opacity: 1 !important; transform: none !important; }
}