:root{--bg: #f7f8fb;--bg-2: #ffffff;--bg-3: #eef1f6;--line: rgba(15, 23, 42, .1);--line-strong: rgba(15, 23, 42, .18);--ink: #0f172a;--ink-dim: #566074;--accent: #2447D4;--accent-press: #1B37A8;--accent-light: #6E86E6;--on-accent: #ffffff;--sec-bg: #0f172a;--sec-ink: #ffffff;--grid: rgba(15, 23, 42, .045);--danger: #dc2626;--ok: #0f8a4d;--radius: 14px;--maxw: 1120px;--font-sans: "Archivo", system-ui, sans-serif;--font-mono: "Space Mono", ui-monospace, monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-sans);background:var(--bg);color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:56px 56px;background-position:center top}h1,h2,h3{line-height:1.08;letter-spacing:-.02em;margin:0;font-weight:800}p{margin:0}a{color:inherit;text-decoration:none}.mono{font-family:var(--font-mono);letter-spacing:.02em}.app-shell{display:flex;flex-direction:column;min-height:100vh}.app-main{flex:1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4em;font-family:var(--font-sans);font-weight:700;font-size:.95rem;padding:.7em 1.3em;border-radius:10px;border:1px solid transparent;cursor:pointer;transition:transform .12s ease,background .18s ease,border-color .18s ease,color .18s ease;white-space:nowrap}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:var(--on-accent);box-shadow:0 8px 20px -12px var(--accent)}.btn-primary:hover:not(:disabled){background:var(--accent-press)}.btn-secondary{background:var(--sec-bg);color:var(--sec-ink)}.btn-secondary:hover:not(:disabled){opacity:.92}.btn-ghost{background:var(--bg-3);color:var(--ink);border-color:var(--line-strong)}.btn-ghost:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.btn-lg{padding:.9em 1.6em;font-size:1.02rem}.btn-block{width:100%}.nav{position:sticky;top:0;z-index:50;background:#ffffffd1;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;font-weight:800}.brand-mark-img{width:34px;height:34px;display:block;border-radius:9px}.brand-the{color:var(--accent-light)}.brand-text{font-size:1.18rem;letter-spacing:-.02em}.brand-accent{color:var(--accent)}.nav-links{display:flex;align-items:center;gap:6px}.nav-link{font-weight:600;color:var(--ink-dim);padding:.5em .85em;border-radius:8px;transition:color .15s ease,background .15s ease}.nav-link:hover{color:var(--ink);background:var(--bg-3)}.nav-link.active{color:var(--accent)}.nav-cta{margin-left:10px}.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;flex-direction:column;gap:5px}.nav-toggle span{width:24px;height:2px;background:var(--ink);display:block;transition:.2s}.section-head{max-width:var(--maxw);margin:0 auto;padding:0 24px}.section-tag{color:var(--accent);font-size:.8rem;display:block;margin-bottom:12px}.section-head h1{font-size:clamp(2rem,5vw,3rem)}.section-head h2{font-size:clamp(1.6rem,4vw,2.4rem);max-width:22ch}.lead{color:var(--ink-dim);font-size:1.1rem;margin-top:14px;max-width:54ch}.hero{position:relative;overflow:hidden;padding:clamp(72px,12vw,140px) 0 clamp(56px,9vw,110px)}.hero-grid{position:absolute;top:-2px;right:-2px;bottom:-2px;left:-2px;background:radial-gradient(120% 90% at 80% -10%,rgba(36,71,212,.12),transparent 55%);pointer-events:none}.hero-content{position:relative;max-width:var(--maxw);margin:0 auto;padding:0 24px}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:.82rem;color:var(--accent);border:1px solid var(--line-strong);border-radius:999px;padding:.4em .9em;margin-bottom:26px}.hero-title{font-size:clamp(2.6rem,7vw,5rem);font-weight:900}.hero-title .accent{color:var(--accent)}.hero-sub{color:var(--ink-dim);font-size:clamp(1.05rem,2vw,1.3rem);max-width:58ch;margin-top:24px}.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}.reveal{opacity:0;transform:translateY(18px);animation:reveal .7s cubic-bezier(.16,1,.3,1) forwards;animation-delay:var(--d, 0ms)}@keyframes reveal{to{opacity:1;transform:none}}@media (prefers-reduced-motion: reduce){.reveal{animation:none;opacity:1;transform:none}}.features{padding:clamp(48px,8vw,90px) 0}.feature-grid{max-width:var(--maxw);margin:40px auto 0;padding:0 24px;display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.feature-card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:transform .18s ease,border-color .18s ease}.feature-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}.feature-code{font-size:.78rem;color:var(--accent);background:var(--bg-3);border:1px solid var(--line-strong);padding:.25em .6em;border-radius:6px}.feature-card h3{font-size:1.3rem;margin:18px 0 10px}.feature-card p{color:var(--ink-dim)}.cta-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:40px;background:var(--bg-2)}.cta-inner{max-width:var(--maxw);margin:0 auto;padding:clamp(48px,8vw,80px) 24px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}.cta-inner h2{font-size:clamp(1.6rem,4vw,2.4rem);max-width:20ch}.auth-wrap{display:grid;place-items:center;padding:clamp(48px,9vw,100px) 24px}.auth-logo{width:260px;max-width:78%;height:auto;display:block;margin-bottom:28px}.auth-card{width:100%;max-width:420px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:36px;box-shadow:0 30px 70px -45px #0f172a59}.auth-title{font-size:1.9rem;margin:8px 0 22px}.auth-form{display:grid;gap:16px;margin-bottom:14px}.field{display:grid;gap:7px}.field span{font-size:.85rem;font-weight:600;color:var(--ink-dim)}.field input{font-family:var(--font-sans);font-size:1rem;background:var(--bg);color:var(--ink);border:1px solid var(--line-strong);border-radius:9px;padding:.75em .9em;outline:none;transition:border-color .15s ease,box-shadow .15s ease}.field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #2447d426}.field-row{display:flex;align-items:center;justify-content:space-between;gap:10px}.link-btn-sm{font-size:.82rem}.pw-wrap{position:relative}.pw-wrap input{width:100%;padding-right:4em}.pw-toggle{position:absolute;right:6px;top:50%;transform:translateY(-50%);background:none;border:0;color:var(--ink-dim);font-family:var(--font-sans);font-size:.82rem;font-weight:600;cursor:pointer;padding:6px 9px;border-radius:6px}.pw-toggle:hover{color:var(--accent)}.auth-switch{text-align:center;color:var(--ink-dim);font-size:.92rem;margin-top:18px}.link-btn{background:none;border:0;color:var(--accent);font-weight:700;cursor:pointer;font-size:inherit;font-family:inherit}.back-link{display:block;text-align:center;color:var(--ink-dim);font-size:.88rem;margin-top:20px}.back-link:hover{color:var(--ink)}.notice{border-radius:9px;padding:12px 14px;font-size:.9rem;margin-bottom:18px;border:1px solid}.notice code{font-family:var(--font-mono);font-size:.82em;background:#0f172a0f;padding:.1em .35em;border-radius:4px}.notice-warn{background:#eab3081a;border-color:#eab30866;color:#92580a}.notice-err{background:#dc262614;border-color:#dc26264d;color:#b91c1c}.notice-ok{background:#0f8a4d1a;border-color:#0f8a4d4d;color:#0f6b3d}.howto{max-width:var(--maxw);margin:0 auto;padding:clamp(56px,9vw,96px) 0}.video-list{display:grid;gap:48px;margin-top:52px;padding:0 24px}.video-row{display:grid;grid-template-columns:1.6fr 1fr;gap:36px;align-items:center}.video-row:nth-child(2n){grid-template-columns:1fr 1.6fr}.video-row:nth-child(2n) .video-frame{order:2}.video-frame{position:relative;aspect-ratio:16 / 9;width:100%;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-strong);background:var(--bg-3)}.video-frame iframe,.video-frame video{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0}.coming-soon{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;padding:16px}.cs-badge{font-family:var(--font-mono);font-size:.8rem;color:var(--accent);background:var(--bg-2);border:1px solid var(--line-strong);padding:.4em .95em;border-radius:999px}.cs-sub{color:var(--ink-dim);font-size:.85rem}.video-num{color:var(--accent);font-size:.9rem}.video-meta h2{font-size:1.5rem;margin:10px 0}.video-meta p{color:var(--ink-dim)}.dashboard{max-width:var(--maxw);margin:0 auto;padding:clamp(56px,9vw,90px) 0}.tool-grid{display:flex;flex-wrap:wrap;gap:18px;margin:44px auto 0;padding:0 24px}.tool-card{flex:0 1 300px;max-width:100%;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:14px}.tool-card-link{text-decoration:none;color:inherit;cursor:pointer;font:inherit;text-align:left;-webkit-appearance:none;-moz-appearance:none;appearance:none;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.tool-card-link:hover:not(:disabled){transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 18px 40px -28px #0f172a59}.tool-card-link:disabled{opacity:.65;cursor:default}.tool-desc{color:var(--ink-dim);font-size:.95rem}.tool-card-top{display:flex;align-items:center;justify-content:space-between}.tool-card h2{font-size:1.25rem}.badge{font-family:var(--font-mono);font-size:.7rem;padding:.3em .6em;border-radius:6px}.badge-ok{color:var(--ok);background:#0f8a4d1f}.badge-soon{color:var(--ink-dim);background:var(--bg-3)}.dash-hint{color:var(--ink-dim);font-size:.85rem;padding:0 24px;margin-top:30px}.page-center{min-height:60vh;display:grid;place-items:center;text-align:center;gap:14px;padding:24px}.spinner{width:34px;height:34px;border:3px solid var(--line-strong);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.notfound-code{color:var(--accent);font-size:3rem}.footer{border-top:1px solid var(--line);background:var(--bg-2)}.footer-inner{max-width:var(--maxw);margin:0 auto;padding:28px 24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.85rem}.footer-dim{color:var(--ink-dim)}.footer-right{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.contact-pill{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-sans);font-weight:700;font-size:.85rem;color:var(--on-accent);background:var(--accent);padding:.5em 1.1em;border-radius:999px;text-decoration:none;transition:background .15s ease}.contact-pill:hover{background:var(--accent-press)}@media (max-width: 760px){.nav-toggle{display:flex}.nav-links{position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;background:var(--bg-2);border-bottom:1px solid var(--line);padding:14px 24px 22px;transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease}.nav-links.is-open{transform:none;opacity:1;pointer-events:auto}.nav-cta{margin:8px 0 0}.video-row,.video-row:nth-child(2n){grid-template-columns:1fr;gap:18px}.video-row:nth-child(2n) .video-frame{order:0}.cta-inner{flex-direction:column;align-items:flex-start}}