*,*:before,*:after{box-sizing:border-box}*{margin:0}html{color-scheme:light dark;scroll-behavior:smooth}body{min-height:100vh;text-rendering:optimizeSpeed}img,picture,svg,video,canvas{display:block;max-width:100%}input,button,textarea,select{font:inherit}button{border:0;padding:0;background:transparent;color:inherit;cursor:pointer}a{color:inherit;text-decoration:none}h1,h2,h3,h4{text-wrap:balance}p,li{text-wrap:pretty}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}:root{--color-bg: #f7fbff;--color-surface: #ffffff;--color-surface-muted: #ecf4f8;--color-text: #101827;--color-muted: #5d6b79;--color-border: #d8e4ec;--color-accent: #0b7f68;--color-accent-strong: #075f4e;--color-accent-soft: #d9f7ef;--color-warning: #a15b00;--color-code-bg: #111827;--color-code-text: #edf7ff;--font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;--text-xs: .78rem;--text-sm: .9rem;--text-md: 1rem;--text-lg: 1.15rem;--text-xl: 1.45rem;--text-2xl: 2rem;--text-3xl: 3.4rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.5rem;--space-6: 2rem;--space-7: 3rem;--space-8: 4.5rem;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 2px rgb(16 24 39 / .08);--shadow-md: 0 18px 40px rgb(16 24 39 / .12);--transition-fast: .16s ease;--width-content: 1140px;--width-prose: 760px}[data-theme=dark]{--color-bg: #0e131b;--color-surface: #161d27;--color-surface-muted: #1e2936;--color-text: #eef6fb;--color-muted: #a7b5c2;--color-border: #2f3b49;--color-accent: #39d6aa;--color-accent-strong: #7af0cc;--color-accent-soft: #113a33;--color-warning: #ffcb7a;--color-code-bg: #070b10;--color-code-text: #edf7ff}body{background:var(--color-bg);color:var(--color-text);font-family:var(--font-sans);font-size:var(--text-md);line-height:1.6}::selection{background:var(--color-accent-soft);color:var(--color-text)}:focus-visible{outline:3px solid var(--color-accent);outline-offset:3px}.container{width:min(100% - 2rem,var(--width-content));margin-inline:auto}.section{padding-block:var(--space-8)}.skip-to-content{position:fixed;z-index:100;top:var(--space-4);left:var(--space-4);transform:translateY(-160%);border-radius:var(--radius-sm);background:var(--color-text);color:var(--color-bg);padding:var(--space-3) var(--space-4);transition:transform var(--transition-fast)}.skip-to-content:focus{transform:translateY(0)}.site-header{position:sticky;z-index:20;top:0;border-bottom:1px solid var(--color-border);background:color-mix(in srgb,var(--color-bg) 88%,transparent);backdrop-filter:blur(16px)}.header-inner{display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:var(--space-4);min-height:72px}.brand{display:inline-flex;align-items:center;gap:var(--space-3);font-weight:750;letter-spacing:0}.brand-mark{display:grid;width:36px;height:36px;place-items:center;border-radius:var(--radius-md);background:var(--color-text);color:var(--color-bg);font-weight:800}.site-nav{display:flex;justify-content:flex-end;gap:var(--space-5);color:var(--color-muted);font-size:var(--text-sm)}.site-nav a{transition:color var(--transition-fast)}.site-nav a:hover,.site-nav a[aria-current=page]{color:var(--color-text)}.nav-toggle,.theme-toggle{display:grid;width:42px;height:42px;place-items:center;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);box-shadow:var(--shadow-sm)}.nav-toggle{display:none;gap:4px}.nav-toggle span{width:18px;height:2px;border-radius:999px;background:currentColor}.theme-toggle-icon{width:18px;height:18px;border-radius:999px;background:var(--color-text);box-shadow:inset -6px -4px 0 var(--color-surface)}[data-theme=dark] .theme-toggle-icon{box-shadow:inset 6px 4px 0 var(--color-surface)}.site-footer{border-top:1px solid var(--color-border);background:var(--color-surface);padding-block:var(--space-7)}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:var(--space-7)}.footer-grid p,.footer-grid a{color:var(--color-muted)}.footer-grid nav{display:grid;gap:var(--space-2);align-content:start}.footer-grid h2{font-size:var(--text-sm)}.footer-brand{margin-bottom:var(--space-3)}.button{display:inline-flex;min-height:46px;align-items:center;justify-content:center;border:1px solid transparent;border-radius:var(--radius-md);padding:0 var(--space-5);font-weight:700;line-height:1.1;transition:background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast),transform var(--transition-fast)}.button:hover{transform:translateY(-1px)}.button-primary{background:var(--color-accent);color:#fff}.button-secondary{border-color:var(--color-border);background:var(--color-surface);color:var(--color-text)}.hero{padding-block:var(--space-8)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);align-items:center;gap:var(--space-7)}.eyebrow{color:var(--color-accent-strong);font-size:var(--text-sm);font-weight:800;letter-spacing:.08em;text-transform:uppercase}.hero h1{max-width:12ch;margin-top:var(--space-3);font-size:var(--text-3xl);line-height:1}.hero-copy{max-width:70ch;margin-top:var(--space-5);color:var(--color-muted);font-size:var(--text-lg)}.hero-actions{display:flex;flex-wrap:wrap;gap:var(--space-3);margin-top:var(--space-6)}.system-panel{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);box-shadow:var(--shadow-md);padding:var(--space-5)}.system-panel h2{margin-bottom:var(--space-4);font-size:var(--text-lg)}.system-stack{display:grid;gap:var(--space-3)}.system-node{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface-muted);padding:var(--space-4)}.system-node strong{display:block}.system-node span{color:var(--color-muted);font-size:var(--text-sm)}.preview-section{padding-block:var(--space-7) var(--space-8);background:linear-gradient(180deg,transparent 0%,color-mix(in srgb,var(--color-surface-muted) 62%,transparent) 100%)}.preview-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(280px,.55fr);align-items:center;gap:var(--space-7)}.preview-copy{margin-bottom:0}.phone-preview{justify-self:center;width:min(100%,342px,calc(72vh * 608 / 1328));aspect-ratio:608 / 1328;overflow:hidden;border:10px solid #111827;border-radius:34px;background:#111827;box-shadow:inset 0 0 0 1px #ffffff24,0 32px 72px #1018273d,0 8px 24px #10182729}.phone-preview video{display:block;width:100%;height:100%;border-radius:24px;background:#111827;object-fit:cover}.section-heading{max-width:760px;margin-bottom:var(--space-6)}.section-heading h2{font-size:var(--text-2xl);line-height:1.12}.section-heading p{margin-top:var(--space-3);color:var(--color-muted)}.feature-grid,.problem-grid,.steps-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-4)}.feature-card,.problem-card,.step-card{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);padding:var(--space-5)}.problem-card h3,.feature-card h3,.step-card h3{font-size:var(--text-lg);line-height:1.25}.problem-card p,.feature-card p,.step-card p{margin-top:var(--space-2);color:var(--color-muted)}.faq-list{display:grid;max-width:var(--width-prose);margin-inline:auto;gap:var(--space-3)}.faq-item{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);padding:0 var(--space-5)}.faq-item summary{display:flex;min-height:64px;align-items:center;justify-content:space-between;gap:var(--space-4);font-size:var(--text-lg);font-weight:750;line-height:1.25;cursor:pointer;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";display:grid;flex:0 0 28px;width:28px;height:28px;place-items:center;border-radius:var(--radius-sm);background:var(--color-surface-muted);color:var(--color-accent-strong);font-weight:800}.faq-item[open] summary:after{content:"-"}.faq-item p{margin-bottom:var(--space-5);color:var(--color-muted)}.warning{border-color:color-mix(in srgb,var(--color-warning) 45%,var(--color-border))}.solution-band{background:var(--color-surface);border-block:1px solid var(--color-border)}.code-block{max-width:100%;overflow-x:auto;border-radius:var(--radius-md);background:var(--color-code-bg);color:var(--color-code-text);padding:var(--space-5);font-family:var(--font-mono);font-size:var(--text-sm);line-height:1.6}.prose{max-width:var(--width-prose)}.prose-header{margin-bottom:var(--space-6)}.prose h1{margin-top:var(--space-3);font-size:var(--text-2xl);line-height:1.1}.prose h2{margin-top:var(--space-7);font-size:var(--text-xl)}.prose p,.prose li{margin-top:var(--space-3);color:var(--color-muted)}.prose a{color:var(--color-accent-strong);font-weight:700;text-decoration:underline;text-underline-offset:.2em}.last-updated{color:var(--color-muted)}@media(max-width:900px){:root{--text-3xl: clamp(2.45rem, 9vw, 3rem);--text-2xl: clamp(1.75rem, 6vw, 2rem)}.hero-grid,.preview-layout,.feature-grid,.problem-grid,.steps-grid,.footer-grid{grid-template-columns:1fr}.phone-preview{width:min(100%,320px,calc(68vh * 608 / 1328))}}@media(max-width:640px){:root{--text-lg: 1.05rem;--text-xl: 1.28rem;--text-2xl: clamp(1.55rem, 7vw, 1.82rem);--text-3xl: clamp(2.25rem, 11vw, 2.85rem);--space-7: 2.35rem;--space-8: 3rem}.container{width:min(100% - 1.25rem,var(--width-content))}.section{padding-block:var(--space-7)}.button{width:100%;min-height:48px;padding-inline:var(--space-4);text-align:center}.hero{padding-block:var(--space-7) var(--space-6)}.hero-grid{gap:var(--space-5)}.hero h1{max-width:11ch;margin-top:var(--space-2);line-height:.98}.hero-copy{max-width:36rem;margin-top:var(--space-4);font-size:var(--text-md);line-height:1.55}.hero-actions{display:grid;gap:var(--space-3);margin-top:var(--space-5)}.system-panel{border-radius:var(--radius-md);box-shadow:var(--shadow-sm);padding:var(--space-4)}.system-panel h2{margin-bottom:var(--space-3);font-size:var(--text-md)}.system-stack{gap:var(--space-2)}.system-node{padding:var(--space-3)}.system-node span{line-height:1.45}.preview-section{padding-block:var(--space-6) var(--space-7)}.preview-layout{gap:var(--space-5)}.phone-preview{width:min(100%,300px);border-width:8px;border-radius:30px;box-shadow:inset 0 0 0 1px #ffffff24,0 22px 46px #10182733,0 6px 18px #10182724}.phone-preview video{border-radius:22px}.section-heading{margin-bottom:var(--space-5)}.section-heading h2{line-height:1.12}.section-heading p{margin-top:var(--space-2);line-height:1.55}.feature-grid,.problem-grid,.steps-grid{gap:var(--space-3)}.feature-card,.problem-card,.step-card{padding:var(--space-4)}.problem-card h3,.feature-card h3,.step-card h3{font-size:var(--text-md)}.problem-card p,.feature-card p,.step-card p{line-height:1.52}.code-step-card{padding:var(--space-3)}.code-step-card h3{padding-inline:var(--space-1)}.code-block{max-width:100%;margin-top:var(--space-3);overflow-x:hidden;padding:.65rem;font-size:.74rem;line-height:1.48}.code-block code{display:block;white-space:pre-wrap;overflow-wrap:anywhere;word-break:normal}.faq-list{gap:var(--space-2)}.faq-item{padding-inline:var(--space-4)}.faq-item summary{min-height:58px;gap:var(--space-3);font-size:var(--text-md)}.faq-item p{margin-bottom:var(--space-4)}.site-footer{padding-block:var(--space-6)}.footer-grid{gap:var(--space-5)}}@media(max-width:759px){.header-inner{grid-template-columns:auto 1fr auto;gap:var(--space-3);min-height:64px}.nav-toggle{display:grid;justify-self:end}.site-nav{position:absolute;top:calc(100% + .5rem);right:.625rem;left:.625rem;display:grid;justify-content:stretch;gap:0;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);box-shadow:var(--shadow-md)}.site-nav[aria-hidden=true]{display:none}.site-nav a{min-height:48px;padding:var(--space-3) var(--space-4)}.theme-toggle{grid-column:3}}@media(max-width:360px){.brand{gap:var(--space-2)}.brand-mark{width:32px;height:32px}.nav-toggle,.theme-toggle{width:40px;height:40px}.phone-preview{width:min(100%,278px)}.code-block{padding:.6rem;font-size:.7rem}}