:root{--bg:#fff;--bg-elevated:#fff;--bg-subtle:#f5f5f7;--bg-inset:#ededf0;--text:#1d1d1f;--text-secondary:#5f5f66;--text-tertiary:#86868b;--border:#0000001a;--border-strong:#00000029;--accent:#a11d33;--accent-hover:#881729;--accent-button:#a11d33;--accent-button-hover:#881729;--brand-mark:#a11d33;--accent-soft:#a11d3314;--success:#2b7048;--success-soft:#2b70481a;--warning:#8a5a00;--warning-soft:#ffb30024;--nav-bg:#ffffffc2;--hero-glow:#a11d3321;--shadow-sm:0 1px 2px #0000000a;--shadow-md:0 18px 44px #00000014;--shadow-lg:0 34px 90px #00000029;--traffic-red:#ff5f57;--traffic-yellow:#febc2e;--traffic-green:#28c840;--radius-sm:10px;--radius-md:16px;--radius-lg:24px;--maxw:1080px;--font-sans:ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--font-mono:ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;color-scheme:light}:root[data-theme=dark]{--bg:#000;--bg-elevated:#0e0e10;--bg-subtle:#121214;--bg-inset:#1c1c1f;--text:#f5f5f7;--text-secondary:#a1a1a6;--text-tertiary:#86868b;--border:#ffffff1f;--border-strong:#fff3;--accent:#d2566b;--accent-hover:#e06a7e;--accent-button:#b02a40;--accent-button-hover:#c43a52;--brand-mark:#b32840;--accent-soft:#d2566b24;--success:#6fbd90;--success-soft:#6fbd9021;--warning:#e8b45e;--warning-soft:#e8b45e21;--nav-bg:#000000b8;--hero-glow:#d2566b2b;--shadow-sm:0 1px 2px #0006;--shadow-md:0 18px 44px #00000080;--shadow-lg:0 34px 90px #000000b3;color-scheme:dark}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#000;--bg-elevated:#0e0e10;--bg-subtle:#121214;--bg-inset:#1c1c1f;--text:#f5f5f7;--text-secondary:#a1a1a6;--text-tertiary:#86868b;--border:#ffffff1f;--border-strong:#fff3;--accent:#d2566b;--accent-hover:#e06a7e;--accent-button:#b02a40;--accent-button-hover:#c43a52;--brand-mark:#b32840;--accent-soft:#d2566b24;--success:#6fbd90;--success-soft:#6fbd9021;--warning:#e8b45e;--warning-soft:#e8b45e21;--nav-bg:#000000b8;--hero-glow:#d2566b2b;--shadow-sm:0 1px 2px #0006;--shadow-md:0 18px 44px #00000080;--shadow-lg:0 34px 90px #000000b3;color-scheme:dark}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:90px}body{background:var(--bg);color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;margin:0;font-size:16px;line-height:1.6}::selection{background:var(--accent);color:#fff}a{color:inherit;text-decoration:none}img,svg{max-width:100%}button,input,textarea{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}code{border:1px solid var(--border);background:var(--bg-subtle);font-family:var(--font-mono);white-space:nowrap;border-radius:5px;padding:1px 5px;font-size:.88em}h1,h2,h3,h4,p{margin-top:0}.container{width:min(var(--maxw), calc(100% - 48px));margin-inline:auto}.skip-link{z-index:200;background:var(--text);color:var(--bg);border-radius:10px;padding:10px 16px;font-size:14px;font-weight:600;transition:top .2s;position:absolute;top:-100px;left:16px}.skip-link:focus{top:12px}.muted{color:var(--text-secondary)}.small{font-size:13px}.brand{color:var(--text);letter-spacing:-.025em;white-space:nowrap;align-items:center;gap:10px;font-size:17px;font-weight:650;display:inline-flex}.logo-mark{width:28px;height:28px;color:var(--brand-mark);flex:none;display:inline-flex}.logo-mark svg{width:100%;height:100%;display:block}.button{background:var(--accent-button);color:#fff;text-align:center;cursor:pointer;-webkit-tap-highlight-color:transparent;border:1px solid #0000;border-radius:980px;justify-content:center;align-items:center;gap:7px;min-height:46px;padding:11px 24px;font-size:15px;font-weight:600;transition:background-color .2s,transform .2s,border-color .2s,color .2s;display:inline-flex}.button:hover{background:var(--accent-button-hover)}.button:active{transform:scale(.985)}.button-secondary{background:var(--bg-subtle);border-color:var(--border);color:var(--text)}.button-secondary:hover{background:var(--bg-inset)}.button-small{min-height:34px;padding:7px 16px;font-size:13px}.button[disabled],.button.is-disabled{background:var(--bg-inset);border-color:var(--border);color:var(--text-tertiary);cursor:not-allowed}.button[disabled]:active{transform:none}.button-wide{width:100%}.text-link{color:var(--accent);font-weight:500}.text-link:hover{text-underline-offset:3px;text-decoration:underline}.site-header{z-index:100;background:var(--nav-bg);backdrop-filter:saturate(180%)blur(20px);border-bottom:1px solid var(--border);position:sticky;top:0}.header-inner{align-items:center;gap:26px;height:64px;display:flex}.desktop-nav{align-items:center;gap:2px;margin-left:10px;display:flex}.nav-link{color:var(--text-secondary);border-radius:8px;padding:7px 12px;font-size:13px;font-weight:500;transition:color .18s,background-color .18s}.nav-link:hover{color:var(--text);background:var(--bg-subtle)}.nav-link.active{color:var(--text);background:var(--bg-subtle);font-weight:600}.header-actions{align-items:center;gap:8px;margin-left:auto;display:flex}.lang-switch{border:1px solid var(--border);color:var(--text-tertiary);letter-spacing:.02em;border-radius:980px;align-items:center;gap:3px;padding:3px 8px;font-size:10.5px;line-height:1.4;display:inline-flex}.lang-active{color:var(--text);font-weight:650}.lang-soon{opacity:.55;cursor:default}.lang-soon:before{content:"/";opacity:.6;margin-right:2px}.icon-button{width:34px;height:34px;color:var(--text-secondary);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:50%;place-items:center;padding:0;transition:background-color .18s,color .18s;display:inline-grid}.icon-button:hover{background:var(--bg-subtle);color:var(--text)}.icon-button svg{fill:none;stroke:currentColor;stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;width:18px;height:18px}.icon-moon,:root[data-theme=dark] .icon-sun{display:none}:root[data-theme=dark] .icon-moon{display:block}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .icon-sun{display:none}:root:not([data-theme=light]) .icon-moon{display:block}}.mobile-nav{display:none}.mobile-nav summary{cursor:pointer;-webkit-tap-highlight-color:transparent;border-radius:9px;place-items:center;width:36px;height:36px;list-style:none;display:grid}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav summary:hover{background:var(--bg-subtle)}.menu-lines{gap:5px;width:18px;display:grid}.menu-lines i{background:var(--text);border-radius:2px;height:1.5px;transition:transform .2s;display:block}.mobile-nav[open] .menu-lines i:first-child{transform:translateY(3.25px)rotate(45deg)}.mobile-nav[open] .menu-lines i:last-child{transform:translateY(-3.25px)rotate(-45deg)}.mobile-panel{background:var(--bg);border-bottom:1px solid var(--border);flex-direction:column;gap:2px;padding:10px 20px 24px;display:flex;position:absolute;top:100%;left:0;right:0;box-shadow:0 24px 44px #0000001a}.mobile-link{color:var(--text-secondary);border-radius:10px;padding:13px 12px;font-size:16px;font-weight:500}.mobile-link:hover{background:var(--bg-subtle);color:var(--text)}.mobile-link.active{background:var(--bg-subtle);color:var(--text);font-weight:600}.mobile-download{margin-top:12px}.hero{text-align:center;padding:86px 0 28px;position:relative;overflow:hidden}.hero:before{content:"";z-index:0;background:radial-gradient(ellipse at center, var(--hero-glow) 0%, transparent 67%);pointer-events:none;width:1100px;height:780px;position:absolute;top:-360px;left:50%;transform:translate(-50%)}.hero>.container{z-index:1;position:relative}.eyebrow{border:1px solid var(--border);background:var(--bg-subtle);color:var(--text-secondary);letter-spacing:.01em;border-radius:980px;align-items:center;gap:8px;margin:0;padding:6px 13px;font-size:12px;font-weight:500;display:inline-flex}.eyebrow .status-dot{background:var(--accent);width:6px;height:6px;box-shadow:0 0 0 3px var(--accent-soft);border-radius:50%}.hero h1{letter-spacing:-.038em;max-width:940px;margin:24px auto 0;font-size:clamp(2.55rem,6.2vw,4.4rem);font-weight:700;line-height:1.07}.hero h1 .text-accent{color:var(--accent)}.hero-lead{max-width:640px;color:var(--text-secondary);margin:22px auto 0;font-size:clamp(1.02rem,1.7vw,1.2rem);line-height:1.6}.hero-actions{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:34px;display:flex}.hero-meta{color:var(--text-tertiary);flex-wrap:wrap;justify-content:center;align-items:center;gap:0;margin:24px 0 0;padding:0;font-size:12.5px;list-style:none;display:flex}.hero-meta li{align-items:center;display:inline-flex}.hero-meta li+li:before{content:"·";color:var(--border-strong);margin:0 13px}.hero-meta svg{fill:none;stroke:currentColor;stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;width:14px;height:14px;margin-right:6px}.hero-visual{max-width:970px;margin:58px auto 0;padding:0 4px;position:relative}.hero-visual:before{content:"";z-index:-1;background:radial-gradient(ellipse at center, var(--hero-glow), transparent 70%);filter:blur(26px);pointer-events:none;position:absolute;inset:12% 7% -8%}.app-window{border:1px solid var(--border-strong);background:var(--bg-elevated);box-shadow:var(--shadow-lg);text-align:left;border-radius:16px;overflow:hidden}.app-titlebar{border-bottom:1px solid var(--border);background:var(--bg-subtle);align-items:center;height:44px;padding:0 16px;display:flex;position:relative}.traffic-lights{gap:7px;display:flex}.traffic-lights i{background:var(--bg-inset);border-radius:50%;width:10px;height:10px}.traffic-lights i:first-child{background:var(--traffic-red)}.traffic-lights i:nth-child(2){background:var(--traffic-yellow)}.traffic-lights i:nth-child(3){background:var(--traffic-green)}.app-titlebar-title{color:var(--text-tertiary);white-space:nowrap;font-size:11.5px;font-weight:500;position:absolute;left:50%;transform:translate(-50%)}.app-titlebar-badge{border:1px solid var(--border);color:var(--text-tertiary);letter-spacing:.04em;white-space:nowrap;border-radius:980px;margin-left:auto;padding:3px 8px;font-size:9px}.app-body{grid-template-columns:192px 1fr;min-height:438px;display:grid}.app-sidebar{border-right:1px solid var(--border);background:var(--bg-subtle);flex-direction:column;gap:18px;padding:16px 12px;display:flex}.mock-brand{letter-spacing:-.01em;align-items:center;gap:8px;padding:2px 8px;font-size:11px;font-weight:650;display:flex}.mock-brand .logo-mark{width:18px;height:18px}.mock-nav{flex-direction:column;gap:2px;display:flex}.mock-nav-label{color:var(--text-tertiary);letter-spacing:.1em;text-transform:uppercase;padding:0 9px 5px;font-size:8.5px;font-weight:600}.mock-nav-item{color:var(--text-secondary);border-radius:7px;align-items:center;gap:8px;padding:6.5px 9px;font-size:11px;display:flex}.mock-nav-item svg{fill:none;stroke:currentColor;stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:12px;height:12px}.mock-nav-item.active{background:var(--accent-soft);color:var(--accent);font-weight:600}.mock-sidebar-foot{border:1px solid var(--border);background:var(--bg-elevated);border-radius:9px;margin-top:auto;padding:10px}.mock-sidebar-foot strong{align-items:center;gap:5px;margin-bottom:3px;font-size:9px;font-weight:600;display:flex}.mock-sidebar-foot strong svg{fill:none;width:10px;height:10px;stroke:var(--success);stroke-width:1.6px;stroke-linecap:round;stroke-linejoin:round}.mock-sidebar-foot span{color:var(--text-tertiary);font-size:8.5px;line-height:1.45;display:block}.mock-main{flex-direction:column;gap:15px;min-width:0;padding:22px 24px 20px;display:flex}.mock-head{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.mock-eyebrow{color:var(--text-tertiary);letter-spacing:.1em;text-transform:uppercase;margin:0 0 4px;font-size:8.5px;font-weight:600}.mock-title{letter-spacing:-.025em;margin:0;font-size:20px;font-weight:650;line-height:1.2}.mock-sub{color:var(--text-secondary);margin:4px 0 0;font-size:10.5px}.mock-timer{border:1px solid var(--border);background:var(--bg-elevated);text-align:right;border-radius:10px;flex:none;padding:8px 12px}.mock-timer span{color:var(--text-tertiary);letter-spacing:.07em;font-size:8px;display:block}.mock-timer strong{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em;margin-top:2px;font-size:15px;font-weight:600;display:block}.mock-progress{border:1px solid var(--border);background:var(--bg-elevated);border-radius:11px;padding:12px 14px}.mock-progress-head{color:var(--text-secondary);justify-content:space-between;align-items:center;margin-bottom:8px;font-size:9.5px;display:flex}.mock-progress-head strong{color:var(--text);font-weight:600}.mock-bar{background:var(--bg-inset);border-radius:980px;height:4px;overflow:hidden}.mock-bar i{border-radius:inherit;background:var(--accent);height:100%;display:block}.mock-steps{color:var(--text-tertiary);justify-content:space-between;margin-top:7px;font-size:8px;display:flex}.mock-steps .now{color:var(--accent);font-weight:600}.mock-modules{border:1px solid var(--border);background:var(--bg-elevated);border-radius:11px;overflow:hidden}.mock-module{border-top:1px solid var(--border);align-items:center;gap:10px;padding:10px 13px;display:flex}.mock-module:first-child{border-top:0}.mock-module-icon{background:var(--bg-subtle);width:26px;height:26px;color:var(--text-secondary);border-radius:7px;flex:none;place-items:center;display:grid}.mock-module-icon svg{fill:none;stroke:currentColor;stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;width:13px;height:13px}.mock-module-title{font-size:10.5px;font-weight:600;line-height:1.3}.mock-module-meta{color:var(--text-tertiary);font-size:8.5px;line-height:1.3}.mock-status{background:var(--bg-subtle);color:var(--text-tertiary);white-space:nowrap;border-radius:980px;margin-left:auto;padding:3px 8px;font-size:8.5px}.mock-status.done{background:var(--success-soft);color:var(--success)}.mock-status.live{background:var(--accent-soft);color:var(--accent);font-weight:600}.mock-foot{color:var(--text-tertiary);align-items:center;gap:6px;margin-top:auto;font-size:8.5px;display:flex}.mock-foot svg{fill:none;width:10px;height:10px;stroke:var(--success);stroke-width:1.6px;stroke-linecap:round;stroke-linejoin:round}.visual-caption{color:var(--text-tertiary);text-align:center;margin:16px auto 0;font-size:11.5px}.section{padding:96px 0}.section-tight{padding:56px 0 96px}.section-subtle{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--bg-subtle)}.section-head{text-align:center;max-width:720px;margin:0 auto 48px}.section-head.left{text-align:left;margin-left:0}.section-label{color:var(--accent);letter-spacing:.1em;text-transform:uppercase;margin:0 0 12px;font-size:12px;font-weight:650}.section-title{letter-spacing:-.032em;margin:0;font-size:clamp(1.95rem,4vw,2.75rem);font-weight:700;line-height:1.13}.section-sub{max-width:600px;color:var(--text-secondary);margin:16px auto 0;font-size:16.5px;line-height:1.65}.section-head.left .section-sub{margin-left:0}.feature-grid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.feature-card{border:1px solid var(--border);background:var(--bg-subtle);border-radius:20px;padding:26px 24px 28px;transition:transform .22s,border-color .22s}.feature-card:hover{border-color:var(--border-strong);transform:translateY(-2px)}.feature-icon{background:var(--accent-soft);width:40px;height:40px;color:var(--accent);border-radius:12px;place-items:center;margin-bottom:18px;display:grid}.feature-icon svg{fill:none;stroke:currentColor;stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;width:20px;height:20px}.feature-card h3{letter-spacing:-.018em;margin:0 0 7px;font-size:17px;font-weight:650}.feature-card p{color:var(--text-secondary);margin:0;font-size:13.5px;line-height:1.6}.split{grid-template-columns:1fr 1fr;align-items:center;gap:64px;display:grid}.split-copy .section-label{margin-bottom:12px}.split-copy h2{letter-spacing:-.032em;margin:0;font-size:clamp(1.9rem,3.6vw,2.6rem);font-weight:700;line-height:1.14}.split-copy>p{max-width:500px;color:var(--text-secondary);margin:18px 0 0;font-size:16px;line-height:1.68}.check-list{gap:12px;margin:28px 0 0;padding:0;list-style:none;display:grid}.check-list li{color:var(--text-secondary);align-items:flex-start;gap:10px;font-size:14px;line-height:1.55;display:flex}.check-mark{background:var(--success-soft);width:20px;height:20px;color:var(--success);border-radius:50%;flex:none;place-items:center;margin-top:1px;display:grid}.check-mark svg{fill:none;stroke:currentColor;stroke-width:2px;stroke-linecap:round;stroke-linejoin:round;width:11px;height:11px}.local-card{border:1px solid var(--border);border-radius:var(--radius-lg);background:linear-gradient(180deg, var(--bg-subtle), var(--bg-elevated));box-shadow:var(--shadow-md);padding:20px}.local-card-head{justify-content:space-between;align-items:center;gap:12px;padding:4px 4px 16px;display:flex}.local-device{align-items:center;gap:10px;font-size:12.5px;font-weight:600;display:flex}.local-device svg{fill:none;width:19px;height:19px;stroke:var(--text-secondary);stroke-width:1.4px;stroke-linecap:round;stroke-linejoin:round}.local-badge{background:var(--success-soft);color:var(--success);white-space:nowrap;border-radius:980px;padding:3px 8px;font-size:9.5px;font-weight:600}.local-rows{gap:8px;display:grid}.local-row{border:1px solid var(--border);background:var(--bg-elevated);border-radius:12px;align-items:center;gap:11px;padding:13px;display:flex}.local-row-icon{background:var(--bg-subtle);width:30px;height:30px;color:var(--text-secondary);border-radius:8px;flex:none;place-items:center;display:grid}.local-row-icon svg{fill:none;stroke:currentColor;stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;width:14px;height:14px}.local-row-text{min-width:0}.local-row-text strong{font-size:11.5px;font-weight:600;line-height:1.35;display:block}.local-row-text span{color:var(--text-tertiary);font-size:9.5px;line-height:1.4;display:block}.local-only{border:1px solid var(--border);color:var(--text-tertiary);white-space:nowrap;border-radius:980px;margin-left:auto;padding:3px 7px;font-size:8.5px}.local-lock{border-top:1px solid var(--border);color:var(--text-tertiary);align-items:flex-start;gap:8px;margin-top:16px;padding:14px 4px 2px;font-size:10.5px;line-height:1.5;display:flex}.local-lock svg{fill:none;stroke:currentColor;stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:13px;height:13px;margin-top:1px}.flow-strip{grid-template-columns:repeat(3,1fr);gap:14px;max-width:900px;margin:0 auto;display:grid}.flow-step{border:1px solid var(--border);background:var(--bg-elevated);border-radius:20px;padding:26px 24px;position:relative}.flow-step-index{background:var(--accent-soft);width:28px;height:28px;color:var(--accent);font-family:var(--font-mono);border-radius:50%;justify-content:center;align-items:center;margin-bottom:16px;font-size:10px;font-weight:600;display:inline-flex}.flow-step h3{letter-spacing:-.015em;margin:0 0 5px;font-size:16px;font-weight:650}.flow-step p{color:var(--text-secondary);margin:0;font-size:12.5px;line-height:1.55}.flow-step:not(:last-child):after{content:"→";z-index:1;width:14px;height:14px;color:var(--text-tertiary);place-items:center;font-size:11px;display:grid;position:absolute;top:50%;right:-14px;transform:translateY(-50%)}.cta-band{color:#f5f5f7;text-align:center;box-shadow:var(--shadow-md);background:#101012;border:1px solid #ffffff1a;border-radius:28px;padding:58px 40px;position:relative;overflow:hidden}.cta-band:before{content:"";filter:blur(80px);pointer-events:none;background:#d2566b40;border-radius:50%;width:620px;height:360px;position:absolute;top:-160px;left:50%;transform:translate(-50%)}.cta-band>*{position:relative}.cta-brand{letter-spacing:-.02em;align-items:center;gap:9px;margin-bottom:20px;font-size:15px;font-weight:650;display:inline-flex}.cta-brand .logo-mark{color:#c43a52}.cta-band h2{letter-spacing:-.032em;margin:0 auto;font-size:clamp(1.8rem,3.6vw,2.5rem);font-weight:700;line-height:1.15}.cta-band p{color:#a1a1a6;max-width:520px;margin:14px auto 0;font-size:14.5px;line-height:1.65}.cta-actions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:26px;display:flex}.cta-band .button[disabled]{color:#c7c7cc;background:#ffffff14;border-color:#ffffff29}.cta-note{color:#86868b;justify-content:center;align-items:center;gap:7px;margin-top:18px;font-size:11.5px;display:flex}.cta-note 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