.landing{--ink: #f4f6fb;--muted: #9aa3b8;--line: rgba(255, 255, 255, .1);--card: rgba(14, 20, 36, .72);--accent: #3ee0c5;--amber: #f0b45a;min-height:100vh;color:var(--ink);background:radial-gradient(900px 480px at 12% -10%,rgba(62,224,197,.18),transparent 55%),radial-gradient(700px 420px at 92% 8%,rgba(240,180,90,.14),transparent 50%),#070b16;font-family:Segoe UI,system-ui,sans-serif}.landing a{color:inherit}.landing-nav,.landing-hero,.landing-section,.landing-footer{width:min(1080px,calc(100% - 40px));margin:0 auto}.landing-nav{display:flex;align-items:center;justify-content:space-between;padding:22px 0 8px}.landing-brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.04em}.landing-brand img{width:36px;height:36px;border-radius:10px}.landing-nav-link{color:var(--muted);text-decoration:none;font-size:14px}.landing-hero{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:48px 0 36px}.landing-kicker{margin:0 0 12px;color:var(--accent);font-size:13px;letter-spacing:.16em;text-transform:uppercase}.landing h1{margin:0 0 16px;font-size:clamp(36px,5vw,58px);line-height:1.12}.landing-lead{margin:0 0 28px;color:var(--muted);font-size:18px;line-height:1.7;max-width:34em}.landing-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}.landing-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:12px;text-decoration:none;font-weight:600}.landing-btn-primary{background:linear-gradient(135deg,#3ee0c5,#2aa7d6);color:#062019}.landing-btn-ghost{border:1px solid var(--line);background:#ffffff0a}.landing-note{margin:0;color:var(--muted);font-size:13px;line-height:1.6}.landing-visual{position:relative;border-radius:22px;overflow:hidden;border:1px solid var(--line);box-shadow:0 24px 80px #00000059}.landing-visual img{display:block;width:100%;height:auto}.landing-section{padding:28px 0 48px}.landing-section h2{margin:0 0 20px;font-size:28px}.landing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.landing-card{padding:22px 20px;border:1px solid var(--line);border-radius:18px;background:var(--card)}.landing-card strong{display:block;margin-bottom:8px;font-size:17px}.landing-card p{margin:0;color:var(--muted);line-height:1.65}.landing-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.landing-step{padding:22px 20px;border-radius:18px;background:#ffffff0a;border:1px solid var(--line)}.landing-step span{display:inline-flex;width:28px;height:28px;margin-bottom:12px;align-items:center;justify-content:center;border-radius:999px;background:#3ee0c529;color:var(--accent);font-size:13px;font-weight:700}.landing-step p{margin:8px 0 0;color:var(--muted);line-height:1.65}.landing-footer{display:flex;justify-content:space-between;gap:16px;padding:28px 0 40px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}@media(max-width:860px){.landing-hero,.landing-grid,.landing-steps,.landing-footer{grid-template-columns:1fr;display:grid}.landing-hero{gap:24px;padding-top:28px}.landing-footer{display:grid}}.session{--session-bg: #111214;--session-panel: #1b1c1f;--session-card: #232429;--session-line: #35363c;--session-text: #f3f4f6;--session-muted: #9aa0aa;--session-accent: #6ee7a8;--session-warn: #f0c36a;box-sizing:border-box;display:flex;flex-direction:column;position:fixed;top:0;right:0;bottom:0;left:0;width:100%;height:100dvh;overflow:hidden;background:var(--session-bg);color:var(--session-text);font-family:system-ui,sans-serif}.session *,.session *:before,.session *:after{box-sizing:border-box}.session-header{flex:0 0 auto;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 10px;padding-top:max(8px,env(safe-area-inset-top));background:#16171a;border-bottom:1px solid var(--session-line)}.session-title{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}.session-header-actions{display:flex;gap:6px;flex:0 0 auto}.session-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--session-line);background:#2a2b31;color:inherit;border-radius:10px;padding:7px 10px;font:inherit;font-size:13px;line-height:1.2;touch-action:manipulation}.session-btn[aria-pressed=true],.session-btn.is-on{background:#2f5a3c;border-color:#4d8a60}.session-btn:disabled{opacity:.5}.session-banner{flex:0 0 auto;padding:8px 12px;font-size:13px;line-height:1.45}.session-banner p{margin:0 0 6px}.session-banner p:last-child{margin-bottom:0}.session-banner.is-tip{background:#1f2a1f}.session-banner.is-wechat{background:#5a3d00;color:#ffe7a3}.session-banner.is-warn{color:var(--session-warn)}.session-status{flex:1;padding:16px;overflow:auto}.picker{flex:1;min-height:0;display:flex;flex-direction:column;padding:10px 10px 12px}.picker-toolbar{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}.picker-toolbar p{margin:0;color:var(--session-muted);font-size:13px}.picker-modes{display:flex;padding:3px;border-radius:12px;background:#121318;border:1px solid var(--session-line)}.picker-modes button{border:0;background:transparent;color:var(--session-muted);border-radius:9px;padding:6px 10px;font:inherit;font-size:13px}.picker-modes button.is-on{background:#2f5a3c;color:#fff}.picker-list{flex:1;min-height:0;overflow:auto;display:flex;flex-direction:column;gap:8px}.picker-list.is-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-content:start;gap:10px}.window-card{display:flex;width:100%;padding:0;border:1px solid var(--session-line);border-radius:14px;background:var(--session-card);color:inherit;text-align:left;overflow:hidden}.window-card.is-selected{border-color:var(--session-accent);box-shadow:0 0 0 1px var(--session-accent)}.window-card.is-list{align-items:center;gap:10px;padding:8px 10px;min-height:64px}.window-card.is-grid{flex-direction:column}.window-thumb{display:block;background:#0d0e12;object-fit:cover}.window-card.is-list .window-thumb{width:72px;height:48px;border-radius:8px;flex:0 0 auto}.window-card.is-grid .window-thumb,.window-card.is-grid .window-thumb-empty{width:100%;aspect-ratio:16 / 10}.window-thumb-empty{display:flex;align-items:center;justify-content:center;color:#f4f6fb;background:#1d2433;font-size:22px;font-weight:650;letter-spacing:.04em}.window-card.is-list .window-thumb-empty{width:72px;height:48px;border-radius:8px;flex:0 0 auto}.window-meta{display:flex;align-items:flex-start;gap:6px;min-width:0;padding:8px 10px 10px}.window-card.is-list .window-meta{flex:1;padding:0}.window-icon{width:16px;height:16px;flex:0 0 auto;margin-top:2px}.window-name{min-width:0;display:-webkit-box;overflow:hidden;-webkit-box-orient:vertical;-webkit-line-clamp:2;font-size:13px;line-height:1.35}.window-badge{color:var(--session-warn);font-size:12px}.video-stage{position:relative;flex:1 1 auto;min-height:120px;background:#000}.dock-slot{flex:0 0 auto;background:#000}.session-dock{flex:0 0 auto;background:var(--session-panel);border-top:1px solid var(--session-line);padding:8px 10px calc(8px + env(safe-area-inset-bottom))}.session.is-ime-open .session-dock{position:fixed;left:0;right:0;bottom:var(--kb-inset, 0px);z-index:30;padding-bottom:8px}.session.is-ime-open .float-keys,.session.is-ime-open .more-tools,.session.is-ime-open .clip-preview{display:none}.session.is-ime-open .ime-row textarea{min-height:40px;max-height:40px}.tool-row,.float-keys{display:flex;gap:6px;margin-bottom:8px;overflow-x:auto;-webkit-overflow-scrolling:touch}.tool-row .session-btn,.float-keys .session-btn{flex:0 0 auto;min-height:40px;white-space:nowrap}.session.is-ime-open .tool-row,.session.is-ime-open .float-keys{display:none}.ime-row{display:flex;gap:8px;align-items:stretch}.ime-row textarea{flex:1;min-height:48px;max-height:88px;font-size:16px;line-height:1.35;padding:10px 12px;border:1px solid var(--session-line);border-radius:12px;background:#101114;color:inherit;resize:none}.ime-row .session-btn{min-width:64px;font-weight:600}.more-tools{margin-top:8px}.more-tools summary{list-style:none;color:var(--session-muted);font-size:13px;padding:4px 0}.more-tools summary::-webkit-details-marker{display:none}.more-tools-row{display:flex;gap:6px;overflow:auto;padding:6px 0 2px}.clip-preview{margin:0 0 8px;font-size:13px;color:var(--session-muted)}.session-error{margin:0 0 8px;color:var(--session-warn);font-size:13px}.expand-video{position:absolute;top:58px;right:8px;z-index:25}html,body,#root{margin:0;min-height:100%}button{font:inherit;padding:6px 10px;touch-action:manipulation}