:root{--bg: #050505;--panel: #0b0b0b;--line: #1c1c1c;--line-strong: #2e2e2e;--txt: #f5f5f5;--txt-dim: #8a8a8a;--txt-faint: #4a4a4a;--nav-bg: rgba(5, 5, 5, .72);--px: 255, 255, 255;--invert: 0;--mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;--sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;--ease-out: cubic-bezier(.16, 1, .3, 1)}[data-theme=light]{--bg: #f0f0ee;--panel: #fafaf8;--line: #dcded8;--line-strong: #c0c2bc;--txt: #121212;--txt-dim: #5c5c58;--txt-faint: #a4a6a0;--nav-bg: rgba(240, 240, 238, .78);--px: 18, 18, 18;--invert: 1}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--txt);font-family:var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden;transition:background .45s ease,color .45s 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var(--line);background:var(--nav-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.nav-brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--txt)}.nav-brand img{width:30px;height:30px;display:block;filter:invert(var(--invert))}.nav-brand .name{font-size:15px;font-weight:600;letter-spacing:2px}.nav-brand .tag{font-family:var(--mono);font-size:10px;color:var(--txt-faint);letter-spacing:1px;border:1px solid var(--line-strong);padding:2px 6px;margin-left:4px}.nav-links{display:flex;align-items:center;gap:28px}.nav-links a{color:var(--txt-dim);text-decoration:none;font-size:13px;letter-spacing:1px;transition:color .25s}.nav-links a:hover{color:var(--txt)}.btn{display:inline-block;font-size:13px;letter-spacing:2px;padding:10px 22px;border:1px solid var(--txt);background:transparent;color:var(--txt);cursor:pointer;text-decoration:none;font-family:var(--sans);transition:background .25s,color 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var(--txt-dim);pointer-events:none}.hud-corner.tl{top:-1px;left:-1px;border-right:none;border-bottom:none}.hud-corner.tr{top:-1px;right:-1px;border-left:none;border-bottom:none}.hud-corner.bl{bottom:-1px;left:-1px;border-right:none;border-top:none}.hud-corner.br{bottom:-1px;right:-1px;border-left:none;border-top:none}.hud-label{position:absolute;font-family:var(--mono);font-size:10px;letter-spacing:2px;color:var(--txt-faint);pointer-events:none}.hud-label.lt{top:10px;left:14px}.hud-label.rt{top:10px;right:14px}.hud-label.lb{bottom:10px;left:14px}.hud-label.rb{bottom:10px;right:14px;color:var(--txt-dim)}.marquee{border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden;padding:14px 0;background:rgba(var(--px),.014)}.marquee-track{display:flex;gap:48px;width:max-content;animation:scroll 36s linear infinite;font-family:var(--mono);font-size:12px;letter-spacing:3px;color:var(--txt-dim);white-space:nowrap}.marquee-track .sq{color:var(--txt-faint)}@keyframes 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var(--line);font-size:13px;letter-spacing:1px}.contact-card .row:last-child{border-bottom:none}.contact-card .row .k{color:var(--txt-faint);font-family:var(--mono);font-size:11px;letter-spacing:2px}.contact-card .row .v{color:var(--txt);text-align:right}.footer{border-top:1px solid var(--line);padding:40px 48px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}.footer .left{display:flex;align-items:center;gap:14px}.footer img{height:26px;display:block;filter:invert(var(--invert))}.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid var(--line-strong);background:transparent;color:var(--txt);cursor:pointer;padding:0;transition:border-color .25s,background .25s}.theme-toggle:hover{border-color:var(--txt)}.theme-toggle svg{width:16px;height:16px;display:block}.acc-illust{grid-column:2;grid-row:1;width:196px;aspect-ratio:4 / 3;object-fit:cover;display:block;border:1px solid var(--line-strong);image-rendering:pixelated;filter:grayscale(1) contrast(1.05);opacity:0;transform:translateY(10px);transition:opacity .5s ease .2s,transform .55s var(--ease-out) .2s}.acc-panel.on .acc-illust{opacity:1;transform:none}.nav,.hero-3d,.marquee,.acc,.acc-panel,.steps,.stats,.contact-card,.footer,.step,.stat{transition:background-color .45s ease,border-color .45s ease}.acc-panel{transition:background-color .45s ease,border-color .45s ease,flex-grow .65s var(--ease-out)}.footer .icp{font-family:var(--mono);font-size:11px;color:var(--txt-faint);letter-spacing:1px}.footer .slogan{font-size:12px;color:var(--txt-dim);letter-spacing:4px}@media (max-width: 1024px){.hero{grid-template-columns:1fr;padding-top:112px;gap:48px}.hero-3d{height:420px}.steps,.stats{grid-template-columns:repeat(2,1fr)}.step:nth-child(2n),.stat:nth-child(2n){border-right:none}.step,.stat{border-bottom:1px solid var(--line)}.about{grid-template-columns:1fr}}@media (max-width: 768px){.nav{padding:0 18px}.nav-links a{display:none}.section{padding:72px 20px}.hero{padding:104px 20px 48px}.section-head{flex-direction:column;align-items:flex-start}.acc{flex-direction:column;height:auto}.acc-panel{flex:none;border-right:none;border-bottom:1px solid var(--line);flex-direction:column}.acc-panel:last-child{border-bottom:none}.acc-panel.on{flex-grow:1}.acc-panel.on .acc-vtitle{opacity:1}.acc-rail{width:100%;height:auto;flex-direction:row;padding:20px 18px;border-right:none}.acc-vtitle{writing-mode:horizontal-tb;font-size:17px;letter-spacing:3px}.acc-body{padding:4px 20px 0;max-height:0;overflow:hidden;transform:none;display:block;transition:max-height .5s var(--ease-out),opacity .4s ease .08s,padding .4s ease}.acc-panel.on .acc-body{max-height:780px;padding-bottom:26px}.acc-illust{width:100%;margin:18px 0 4px;transform:none}.acc-tags{padding-top:20px}.acc-body h3{display:none}.acc-body .en{margin-bottom:16px}.acc-fig{display:none}.steps,.stats{grid-template-columns:1fr}.step,.stat{border-right:none}.footer{padding:32px 20px;flex-direction:column;align-items:flex-start}}