:root{--text:#e0e0e0;--text-h:#fff;--bg:#0f0f1a;--border:#ffffff1a;--code-bg:#1a1a2e;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:16px/145% var(--sans);--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}html{width:100%;height:var(--app-height,100dvh);-webkit-text-size-adjust:100%;-moz-text-size-adjust:100%;text-size-adjust:100%;overscroll-behavior:none;overflow:hidden}body{width:100%;height:var(--app-height,100dvh);overscroll-behavior:none;touch-action:manipulation;margin:0;position:fixed;inset:0;overflow:hidden}#root{width:100%;height:var(--app-height,100dvh);overflow:hidden}:root{--bg:#eef2f7;--surface:#fff;--surface-soft:#f6f8fb;--ink:#111827;--muted:#667085;--muted-2:#98a2b3;--line:#11182717;--primary:#2563eb;--primary-dark:#1d4ed8;--accent:#14b8a6;--danger:#ef4444;--bubble-in:#f2f4f7;--shadow:0 24px 70px #0f172a2e}*{box-sizing:border-box}body{color:var(--ink);letter-spacing:0;background:radial-gradient(circle at 18% 12%,#2563eb29,#0000 28%),radial-gradient(circle at 82% 20%,#14b8a624,#0000 25%),linear-gradient(#f8fafc 0%,#e5eaf2 100%);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,ui-sans-serif,sans-serif;overflow:hidden}button,input{font:inherit;letter-spacing:0}button{-webkit-tap-highlight-color:transparent}.login-container,.chat-layout{width:100%;max-width:100%;height:100dvh;height:var(--app-height,100dvh);justify-content:center;align-items:center;min-height:0;padding:18px;display:flex;overflow:hidden}.login-card,.chat-main{width:min(100%,430px);max-width:100%;height:min(100%,884px);max-height:calc(100dvh - 36px);max-height:calc(var(--app-height,100dvh) - 36px);background:var(--surface);min-width:0;box-shadow:var(--shadow);border:1px solid #ffffffbf;border-radius:28px;overflow:hidden}.login-card{padding:max(24px, env(safe-area-inset-top)) 22px max(22px, env(safe-area-inset-bottom));flex-direction:column;gap:8px;display:flex}.login-hero{flex:none;padding:42px 2px 22px}.login-app-icon{background:linear-gradient(135deg, var(--primary), 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and (height<=720px){.login-card{padding-top:max(14px, env(safe-area-inset-top));padding-bottom:max(10px, env(safe-area-inset-bottom));gap:8px}.login-hero{padding-top:8px;padding-bottom:6px}.login-app-icon{border-radius:16px;width:50px;height:50px;font-size:22px}.login-kicker{margin-top:14px;font-size:11px}.login-card h1{margin-top:8px;font-size:34px}.login-card p{margin-top:8px;font-size:13px;line-height:1.4}.login-preview{gap:7px;min-height:72px;padding:0 0 4px}.preview-avatar{width:30px;height:30px;font-size:12px}.preview-bubble{padding:9px 12px;font-size:14px}.invite-panel{padding:10px}.invite-note{margin-top:7px;font-size:12px;line-height:1.35}.login-card button,.login-card input{border-radius:15px;height:48px;min-height:48px;font-size:15px}.login-footnote{margin-top:8px;font-size:11px}.home-guide-card{padding:13px}.home-guide-title{margin-top:10px;font-size:21px}.home-guide-copy{margin-top:7px;font-size:13px;line-height:1.42}.home-guide-steps{gap:7px;margin-top:10px}.home-guide-step{min-height:40px;padding:8px 10px;font-size:13px}.home-guide-primary{min-height:44px;margin-top:10px}}@media (width<=520px) and (height<=620px){.login-preview{display:none}.login-card{justify-content:center}}@media (width<=370px){.login-card h1{font-size:35px}.input-area{grid-template-columns:38px 38px minmax(0,1fr) auto;gap:6px}.attach-btn,.sticker-toggle-btn{width:38px;height:38px}.send-btn{min-width:52px;height:38px;padding:0 11px;font-size:13px}.message-content,.message-file{font-size:15px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important}}