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ease}.theme-toggle.is-ready{opacity:1;pointer-events:auto}.theme-toggle:hover{transform:translateY(-4px);background:var(--control-hover);box-shadow:0 14px 28px var(--control-hover-shadow)}.theme-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.theme-toggle-ic{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.section-sidebar{position:fixed;top:50%;left:clamp(18px,calc((100vw - 820px) / 2 - 172px),72px);z-index:18;width:148px;padding:8px;border:1px solid var(--card-border);border-radius:18px;display:none;flex-direction:column;gap:3px;background:var(--control);box-shadow:inset 0 1px 2px var(--inset-highlight),0 14px 34px var(--shadow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);transform:translateY(-50%)}.section-nav-link{min-width:0;min-height:36px;border:1px solid transparent;border-radius:12px;display:flex;align-items:center;gap:9px;padding:8px 10px;color:var(--ink-soft);font-family:var(--font-mono),monospace;font-size:11px;line-height:1.2;text-decoration:none;transition:color .18s ease,background .18s ease,border-color .18s ease,transform .18s ease}.section-nav-link:hover{color:var(--ink);background:var(--surface);transform:translateX(2px)}.section-nav-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.section-nav-link.is-active{color:var(--ink);background:var(--surface-hover);border-color:var(--card-border)}.section-nav-dot{width:6px;height:6px;border-radius:50%;flex-shrink:0;background:var(--ink-soft);opacity:.52;transition:background .18s ease,box-shadow .18s ease,opacity .18s ease,transform .18s ease}.section-nav-link.is-active .section-nav-dot{background:var(--accent);box-shadow:0 0 0 5px var(--tag-bg);opacity:1;transform:scale(1.08)}.section-mobile-trigger{position:fixed;left:50%;bottom:calc(16px + env(safe-area-inset-bottom));z-index:19;min-width:132px;height:44px;border:1px solid var(--card-border);border-radius:999px;display:none;align-items:center;justify-content:center;gap:8px;padding:0 16px;color:var(--accent);background:var(--control);box-shadow:inset 0 1px 2px var(--inset-highlight),0 12px 28px var(--shadow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);cursor:pointer;font-family:var(--font-mono),monospace;font-size:12px;line-height:1;transform:translateX(-50%);transition:background .2s ease,box-shadow .2s ease,color .2s ease,transform .18s ease}.section-mobile-trigger:hover{background:var(--control-hover);box-shadow:0 14px 28px var(--control-hover-shadow);transform:translate(-50%,-3px)}.section-mobile-trigger:focus-visible,.section-sheet-close:focus-visible,.section-sheet-scrim:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.section-mobile-ic{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.section-sheet-layer{position:fixed;inset:0;z-index:30;display:none;pointer-events:none}.section-sheet-layer.is-open{pointer-events:auto}.section-sheet-scrim{position:absolute;inset:0;border:0;background:rgba(32,24,38,.28);cursor:default;opacity:0;transition:opacity .24s ease}.section-sheet{position:absolute;left:50%;bottom:calc(12px + env(safe-area-inset-bottom));width:min(calc(100vw - 24px),430px);padding:12px;border:1px solid var(--card-border);border-radius:22px;background:var(--card);box-shadow:0 24px 54px var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);opacity:0;transform:translate(-50%,calc(100% + 28px));transition:opacity .24s ease,transform .24s cubic-bezier(.2,.8,.2,1)}.section-sheet-layer.is-open .section-sheet-scrim{opacity:1}.section-sheet-layer.is-open 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28px));display:flex;flex-direction:column;align-items:flex-end;gap:8px;pointer-events:none}.chat-speech-bubble{position:relative;display:block;width:min(150px,calc(100vw - 28px));padding:9px 11px;border:1px solid var(--card-border);border-radius:18px;color:var(--ink);background:var(--card);box-shadow:inset 0 1px 2px var(--inset-highlight),0 14px 34px var(--shadow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);font-family:var(--font-mono),monospace;font-size:11px;line-height:1.35;text-align:left}.chat-speech-bubble:after{content:"";position:absolute;right:25px;bottom:-7px;width:12px;height:12px;border-right:1px solid var(--card-border);border-bottom:1px solid var(--card-border);background:var(--card);transform:rotate(45deg)}.chat-mascot-button{width:64px;height:64px;border:0;border-radius:22px;padding:0;background:transparent;cursor:pointer;pointer-events:auto;transition:filter .18s ease,transform .18s ease}.chat-mascot-button:hover{filter:brightness(1.03);transform:translateY(-3px) rotate(-2deg)}.chat-mascot-button:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.chat-mascot-button .mascot{width:64px;height:64px}.chat-mascot-prompt:has(.chat-panel){width:auto}.chat-panel{pointer-events:auto;display:flex;flex-direction:column;width:min(360px,calc(100vw - 28px));max-width:100%;min-width:0;height:min(520px,calc(100dvh - 150px));border:1px solid var(--card-border);border-radius:20px;background:var(--card);box-shadow:inset 0 1px 2px var(--inset-highlight),0 20px 50px var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);overflow:hidden}.chat-panel-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid 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color-mix(in srgb,var(--accent) 32%,transparent);border-bottom-right-radius:4px}.chat-answer-group{width:100%;min-width:0;align-items:flex-start}.chat-answer-group,.chat-md{display:flex;flex-direction:column;gap:10px}.chat-md{white-space:normal}.chat-md h2,.chat-md h3,.chat-md h4{margin:0;color:var(--ink);font-family:var(--font-display),sans-serif;line-height:1.25}.chat-md h2{font-size:17px}.chat-md h3{font-size:15px}.chat-md h4{font-size:14px}.chat-md p{margin:0}.chat-md ol,.chat-md ul{display:flex;flex-direction:column;gap:6px;margin:0;padding-left:1.15rem}.chat-md li{padding-left:2px}.chat-md li::marker{color:var(--accent)}.chat-md-section-list{display:flex;flex-direction:column;gap:12px}.chat-md-section-list>ul{margin:0}.chat-md-section{display:flex;flex-direction:column;gap:7px}.chat-md-section h3{margin:0;color:var(--ink);font-family:var(--font-display),sans-serif;font-size:15px;line-height:1.3}.chat-md-section ul{gap:5px;padding-left:1.05rem}.chat-md 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var(--card-border);border-radius:16px;display:grid;grid-template-rows:auto 1fr;color:inherit;background:var(--surface);font:inherit;text-decoration:none;text-align:left;overflow:hidden;cursor:zoom-in;scroll-snap-align:start;transition:transform .18s ease,background .18s ease,box-shadow .18s ease}.chat-related-card:hover{transform:translateY(-2px);background:var(--control-hover);box-shadow:0 14px 26px var(--shadow)}.chat-related-card:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.chat-related-card img{width:100%;height:clamp(132px,18vw,190px);display:block;object-fit:contain;padding:6px;background:color-mix(in srgb,var(--control) 72%,transparent)}.chat-related-card div{min-width:0;padding:11px}.chat-related-card strong{display:block;color:var(--ink);font-family:var(--font-display),sans-serif;font-size:13px;line-height:1.25}.chat-related-card 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