:root { color-scheme: dark; scrollbar-gutter: stable; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: var(--mc-bg, #05070a); color: var(--mc-text, #e6edf3); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
.hub-main { max-width: 1120px; margin: 0 auto; padding: 42px 24px 28px; }
.hub-intro { margin-bottom: 30px; }
.hub-intro h1 { margin: 0 0 9px; font-size: clamp(1.7rem, 4vw, 2.3rem); font-weight: 650; line-height: 1.2; letter-spacing: -0.035em; }
.hub-intro p { margin: 0; color: var(--mc-muted, #94a3b8); font-size: 0.9rem; }
.hub-section-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 15px; }
.hub-section-title h2 { margin: 0; font-size: 0.92rem; font-weight: 600; }
.hub-section-note { display: inline-flex; align-items: center; gap: 5px; color: var(--mc-muted, #94a3b8); font-size: 0.75rem; }
.hub-section-note .mc-icon { width: 14px; height: 14px; }
.category-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.hub-category { --category-color: #a5a0ff; --category-tint: #201d37; min-width: 0; border: 1px solid var(--mc-border, #263143); border-radius: 18px; background: var(--mc-panel, #0f141e); }
.hub-category[data-category="ai"], .category-dialog[data-category="ai"] { --category-color: #50ded1; --category-tint: #112c2d; }
.hub-category[data-category="news"], .category-dialog[data-category="news"] { --category-color: #ffc078; --category-tint: #30251c; }
.category-trigger { position: relative; display: flex; flex-direction: column; align-items: flex-start; gap: 17px; min-height: 185px; padding: 24px; border-radius: 17px; cursor: pointer; list-style: none; transition: background 160ms; }
.category-trigger::-webkit-details-marker { display: none; }
.category-trigger::marker { content: ""; }
.category-trigger:hover { background: var(--mc-raised, #141c28); }
.category-icon { display: grid; place-items: center; width: 58px; height: 58px; border-radius: 17px; color: var(--category-color, #a5a0ff); background: var(--category-tint, #201d37); }
.category-icon svg { width: 31px; height: 31px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.category-copy { display: grid; gap: 6px; }
.category-name { font-size: 1rem; font-weight: 600; line-height: 1.35; }
.category-note { color: var(--mc-muted, #94a3b8); font-size: 0.76rem; }
.category-open { position: absolute; top: 27px; right: 22px; display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid var(--mc-border, #263143); border-radius: 9px; color: var(--mc-muted, #94a3b8); }
.category-open::before, .category-open::after { content: ""; position: absolute; width: 10px; height: 1px; background: currentColor; }
.category-open::after { transform: rotate(90deg); }
.category-trigger[aria-expanded="true"] .category-open::after, .hub-category[open] .category-open::after { transform: rotate(0); }
.hub-category[open] { grid-column: 1 / -1; }
.hub-category > .category-content { padding: 0 24px 24px; }
.tool-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.tool-link { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 9px; min-width: 0; min-height: 130px; padding: 16px 8px; border: 1px solid var(--mc-border, #263143); border-radius: 14px; background: var(--mc-raised, #141c28); color: inherit; text-align: center; text-decoration: none; transition: border-color 160ms, background 160ms; }
.tool-link:hover { border-color: var(--category-color, #00e5ff); background: var(--mc-panel, #0f141e); }
.tool-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; background: var(--category-tint, #201d37); color: var(--category-color, #a5a0ff); }
.tool-icon .mc-icon { width: 26px; height: 26px; }
.tool-name { font-size: 0.86rem; font-weight: 550; line-height: 1.35; }
.tool-note { display: flex; align-items: center; justify-content: center; gap: 4px; color: var(--mc-muted, #94a3b8); font-size: 0.67rem; line-height: 1.3; }
.tool-note .mc-icon { width: 12px; height: 12px; }
.ai-overview .tool-link { min-height: 112px; }
.ai-pages { margin-top: 20px; border-top: 1px solid var(--mc-border, #263143); }
.ai-pages summary { display: flex; align-items: center; gap: 8px; min-height: 48px; padding: 11px 2px; color: var(--mc-muted, #94a3b8); font-size: 0.83rem; cursor: pointer; list-style: none; }
.ai-pages summary::-webkit-details-marker { display: none; }
.ai-pages summary::after { content: "+"; margin-left: auto; font-size: 1.1rem; }
.ai-pages[open] summary::after { content: "−"; }
.ai-pages .mc-icon { width: 17px; height: 17px; }
.ai-pages + .ai-pages { margin-top: 0; }
.ai-pages ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 14px; margin: 0 0 10px; padding: 0; list-style: none; }
.ai-pages a { display: flex; align-items: center; min-height: 44px; padding: 7px 10px; border-radius: 8px; color: var(--mc-text, #e6edf3); font-size: 0.8rem; text-decoration: none; }
.ai-pages a:hover { background: var(--mc-raised, #141c28); color: var(--category-color, #50ded1); }
.popular-sites { margin-top: 36px; }
.site-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; }
.site-shortcut { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 11px; min-width: 0; min-height: 111px; padding: 15px 5px; border: 1px solid transparent; border-radius: 14px; background: var(--mc-panel, #0f141e); color: inherit; text-align: center; text-decoration: none; transition: border-color 160ms, background 160ms; }
.site-shortcut:hover { border-color: var(--mc-border, #263143); background: var(--mc-raised, #141c28); }
.site-shortcut > span:last-child { font-size: 0.8rem; line-height: 1.2; }
.site-mark { display: grid; place-items: center; width: 43px; height: 43px; border-radius: 13px; color: var(--site-color, #e6edf3); background: var(--site-bg, #202833); }
.site-mark svg { width: 25px; height: 25px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.site-monogram { font-size: 24px; font-weight: 650; line-height: 1; }
.site-mark .mc-icon { width: 25px; height: 25px; }
.hub-footer { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 20px; margin-top: 32px; padding-top: 14px; border-top: 1px solid var(--mc-border, #263143); color: var(--mc-muted, #94a3b8); font-size: 0.75rem; }
.hub-footer span { margin-right: auto; }
.hub-footer a { display: inline-flex; align-items: center; min-height: 44px; color: inherit; text-underline-offset: 0.2em; }
.hub-footer a:hover { color: var(--mc-accent, #00e5ff); }
.hub-main a:focus-visible, .hub-main summary:focus-visible, .category-dialog a:focus-visible, .category-dialog button:focus-visible, .category-dialog summary:focus-visible { outline: 2px solid var(--mc-accent, #00e5ff); outline-offset: 3px; }
.category-dialog { --category-color: #a5a0ff; --category-tint: #201d37; width: min(660px, calc(100% - 40px)); max-width: none; max-height: min(760px, calc(100dvh - 64px)); margin: auto; padding: 0; overflow: hidden; border: 1px solid var(--mc-border, #263143); border-radius: 22px; background: var(--mc-panel, #0f141e); color: var(--mc-text, #e6edf3); box-shadow: 0 28px 100px #0009; }
.category-dialog[open] { display: flex; flex-direction: column; animation: category-appear 160ms ease-out; }
.category-dialog::backdrop { background: #03060cbf; backdrop-filter: blur(6px); }
html:has(.category-dialog[open]) { overflow: hidden; }
.category-dialog-header { display: flex; align-items: center; gap: 13px; flex: 0 0 auto; padding: 21px 24px; border-bottom: 1px solid var(--mc-border, #263143); }
.category-dialog-header .category-icon { width: 43px; height: 43px; border-radius: 12px; }
.category-dialog-header .category-icon svg { width: 25px; height: 25px; }
.category-dialog-title { margin: 0; font-size: 1.1rem; font-weight: 600; }
.category-close { display: grid; place-items: center; flex: 0 0 44px; height: 44px; margin-left: auto; padding: 0; border: 0; border-radius: 12px; background: var(--mc-raised, #141c28); color: var(--mc-muted, #94a3b8); cursor: pointer; }
.category-close:hover { color: var(--mc-text, #e6edf3); }
.category-close svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.category-dialog-body { min-height: 0; padding: 22px 24px 24px; overflow-y: auto; overscroll-behavior: contain; }
@keyframes category-appear { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@media (max-width: 760px) {
  .hub-main { padding: 28px max(16px, env(safe-area-inset-right)) 24px max(16px, env(safe-area-inset-left)); }
  .category-grid { gap: 12px; }
  .category-trigger { align-items: center; min-height: 165px; padding: 20px 9px 17px; text-align: center; }
  .category-name { font-size: 0.88rem; }
  .category-open { top: 9px; right: 9px; width: 18px; height: 18px; border: 0; }
  .site-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
}
@media (max-width: 600px) {
  .hub-main { padding-top: 27px; }
  .hub-intro { margin-bottom: 25px; }
  .hub-intro h1 { font-size: 1.8rem; }
  .hub-intro p { font-size: 0.83rem; }
  .hub-section-title { margin-bottom: 12px; }
  .hub-section-title h2 { font-size: 0.85rem; }
  .category-grid { gap: 10px; }
  .hub-category { border-radius: 15px; }
  .category-trigger { justify-content: flex-start; gap: 13px; min-height: 158px; padding: 21px 7px 16px; border-radius: 14px; }
  .category-icon { width: 47px; height: 47px; border-radius: 14px; }
  .category-icon svg { width: 27px; height: 27px; }
  .category-copy { gap: 6px; }
  .category-name { max-width: 7em; min-height: 2.7em; font-size: 0.77rem; }
  .category-note { font-size: 0.65rem; }
  .category-open { top: 6px; right: 6px; }
  .category-open::before, .category-open::after { width: 8px; }
  .popular-sites { margin-top: 28px; }
  .site-grid { gap: 9px; }
  .site-shortcut { min-height: 98px; gap: 10px; border-radius: 12px; padding: 13px 3px; }
  .site-shortcut > span:last-child { font-size: 0.7rem; }
  .site-mark { width: 39px; height: 39px; border-radius: 12px; }
  .site-mark svg, .site-mark .mc-icon { width: 23px; height: 23px; }
  .hub-footer { gap: 2px 16px; margin-top: 26px; }
  .hub-footer span { width: 100%; }
  .category-dialog { width: 100%; max-height: calc(100dvh - max(72px, env(safe-area-inset-top))); margin: auto 0 0; border-radius: 22px 22px 0 0; border-bottom: 0; }
  .category-dialog-header { gap: 11px; padding: 17px 16px 14px; }
  .category-dialog-title { font-size: 1rem; }
  .category-dialog-body { padding: 18px 16px max(24px, env(safe-area-inset-bottom)); }
  .tool-grid { gap: 10px; }
  .tool-link { min-height: 121px; gap: 9px; padding: 14px 5px; }
  .tool-name { font-size: 0.78rem; }
  .tool-note { font-size: 0.61rem; }
}
@media (prefers-reduced-motion: reduce) {
  .category-dialog[open] { animation: none; }
  .category-trigger, .tool-link, .site-shortcut { transition: none; }
}