:root{--bg:#f7f8fa;--surface:#fff;--surface-2:#f1f3f7;--ink:#16181d;--ink-2:#3d424d;--muted:#6b7280;--line:#e6e8ee;--line-strong:#d3d7e0;--accent:#b8385a;--accent-dark:#952946;--accent-strong:#952946;--accent-soft:#fceef2;--ok:#0a6b3b;--ok-bg:#e6f4ec;--err:#b00020;--err-bg:#fdecef;--radius:14px;--radius-sm:10px;--shadow-sm:0 1px 2px rgba(16,18,29,.04),0 1px 3px rgba(16,18,29,.06);--shadow-md:0 4px 12px rgba(16,18,29,.06),0 2px 6px rgba(16,18,29,.04);--shadow-lg:0 18px 50px rgba(16,18,29,.12);--maxw:1080px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--accent)}h1,h2,h3{line-height:1.2;letter-spacing:-.02em;margin:0}h1{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800}h2{font-size:clamp(1.4rem,3vw,2rem)}h2,h3{font-weight:700}h3{font-size:1.15rem}p{margin:0}.sub{color:var(--muted)}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}.section{padding:72px 0}.narrow{max-width:760px;margin:0 auto}.stack>*+*{margin-top:16px}.nav{position:-webkit-sticky;position:sticky;top:0;z-index:50;background:rgba(247,248,250,.82);-webkit-backdrop-filter:saturate(180%) blur(10px);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}.nav-inner{max-width:var(--maxw);margin:0 auto;padding:14px 24px;justify-content:space-between;gap:16px}.brand,.nav-inner{display:flex;align-items:center}.brand{gap:10px;text-decoration:none;color:var(--ink);font-weight:800;letter-spacing:-.02em}.brand .mark{width:30px;height:30px;border-radius:8px;flex:none;background:linear-gradient(135deg,var(--accent),var(--accent-strong));display:grid;place-items:center;color:#fff;font-size:15px;box-shadow:var(--shadow-sm)}.nav-links{display:flex;align-items:center;gap:8px}.nav-links a.link{color:var(--ink-2);text-decoration:none;font-weight:500;padding:8px 12px;border-radius:8px;font-size:.95rem}.nav-links a.link:hover{background:var(--surface-2);color:var(--ink)}@media (max-width:560px){.nav-links .hide-sm{display:none}}.hero{padding:84px 0 64px;text-align:center}.hero .eyebrow{display:inline-block;font-size:.82rem;font-weight:600;letter-spacing:.02em;color:var(--accent-strong);background:var(--accent-soft);padding:6px 14px;border-radius:99px;margin-bottom:22px}.hero h1{max-width:760px;margin:0 auto 18px}.hero p.lead{font-size:1.18rem;color:var(--ink-2);max-width:620px;margin:0 auto 32px}.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.btn,button{background:var(--accent);color:#fff;border:1px solid transparent;padding:11px 20px;border-radius:var(--radius-sm);font-size:.98rem;font-weight:600;cursor:pointer;transition:.15s ease;text-decoration:none;display:inline-flex;align-items:center;gap:8px;font-family:inherit;line-height:1.2}.btn:hover,button:hover{background:var(--accent-strong);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn:active,button:active{transform:translateY(0)}button:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}.btn-lg{padding:14px 26px;font-size:1.05rem}.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line-strong)}.btn-ghost:hover{background:var(--surface-2);color:var(--ink);border-color:var(--line-strong)}.btn-google{background:var(--surface);color:var(--ink);border:1px solid var(--line-strong)}.btn-google:hover{background:var(--surface-2);color:var(--ink)}.btn-google svg{width:18px;height:18px}.btn-danger{background:var(--surface);color:var(--err);border:1px solid #f0b3bd}.btn-danger:hover{background:var(--err);color:#fff;border-color:var(--err)}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}.card+.card{margin-top:18px}.grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:18px;gap:18px}@media (max-width:760px){.grid{grid-template-columns:1fr}}.tile{display:block;text-decoration:none;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.18s ease;box-shadow:var(--shadow-sm)}.tile:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:var(--shadow-md)}.tile .ic{width:42px;height:42px;border-radius:11px;margin-bottom:16px;background:var(--accent-soft);color:var(--accent-strong);display:grid;place-items:center}.tile .ic svg{width:22px;height:22px}.tile b{display:block;font-size:1.08rem;margin-bottom:6px;font-weight:700}.tile span{color:var(--muted);font-size:.92rem;line-height:1.55}.tile .go{color:var(--accent);font-weight:600;font-size:.9rem;margin-top:14px;display:inline-block}.feature .ic{width:42px;height:42px;border-radius:11px;margin-bottom:16px;background:var(--accent-soft);color:var(--accent-strong);display:grid;place-items:center}.feature .ic svg{width:22px;height:22px}.feature h3{margin-bottom:6px}.feature p{color:var(--muted);font-size:.95rem}.steps{counter-reset:step;display:grid;grid-gap:14px;gap:14px}.step{display:flex;gap:16px;align-items:flex-start}.step .n{counter-increment:step;flex:none;width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:700;font-size:.9rem}.step .n:before{content:counter(step)}.step h3{font-size:1rem;margin-bottom:2px}.step p{color:var(--muted);font-size:.93rem}.app-bar{border-bottom:1px solid var(--line);background:var(--surface)}.app-bar-inner{max-width:var(--maxw);margin:0 auto;padding:14px 24px;justify-content:space-between;gap:16px}.app-bar-inner,.app-user{display:flex;align-items:center}.app-user{gap:12px}.app-user .who{font-size:.88rem;color:var(--muted)}@media (max-width:560px){.app-user .who{display:none}}.page{max-width:var(--maxw);margin:0 auto;padding:40px 24px 80px}.page-head{margin-bottom:28px}.page-head h1{font-size:clamp(1.6rem,3vw,2.1rem)}.page-head .sub{margin-top:8px;max-width:640px}input[type=number],input[type=text],select,textarea{width:100%;padding:11px 13px;border:1px solid var(--line-strong);border-radius:var(--radius-sm);font-size:1rem;font-family:inherit;background:var(--surface);color:var(--ink);transition:border-color .15s,box-shadow .15s}input[type=number]:focus,input[type=text]:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}label{display:block;font-weight:600;margin:0 0 7px;font-size:.92rem}.field{margin-bottom:18px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.filelist{list-style:none;margin:18px 0 0;padding:0}.filelist li{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:10px;background:var(--surface);transition:border-color .15s}.filelist li:hover{border-color:var(--line-strong)}.filelist li .fname{font-size:.94rem;font-weight:500;word-break:break-word}.err{color:var(--err);background:var(--err-bg)}.err,.ok{padding:11px 15px;border-radius:var(--radius-sm);margin:14px 0;font-size:.93rem}.ok{color:var(--ok);background:var(--ok-bg)}.back{color:var(--muted);text-decoration:none;font-size:.9rem;display:inline-block;margin-bottom:18px}.back:hover{color:var(--accent)}.seg{display:inline-flex;border:1px solid var(--line-strong);border-radius:var(--radius-sm);overflow:hidden}.seg button{background:var(--surface);color:var(--ink-2);border-radius:0;font-weight:600}.seg button,.seg button:hover{box-shadow:none;transform:none}.seg button:hover{background:var(--surface-2)}.seg button.active{background:var(--accent);color:#fff}.seg button.active:hover{background:var(--accent-strong)}.tag{font-size:.75rem;background:var(--surface-2);padding:3px 9px;border-radius:99px;color:var(--muted)}.footer{border-top:1px solid var(--line);background:var(--surface);margin-top:40px}.footer-inner{max-width:var(--maxw);margin:0 auto;padding:32px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.footer .copy{color:var(--muted);font-size:.88rem}.footer .flinks{display:flex;gap:18px;flex-wrap:wrap}.footer .flinks a{color:var(--ink-2);text-decoration:none;font-size:.9rem}.footer .flinks a:hover{color:var(--accent)}.center-screen{min-height:60vh;display:grid;place-items:center;color:var(--muted)}.progress{height:8px;background:var(--surface-2);border-radius:99px;overflow:hidden;margin-top:6px}.progress>i{display:block;height:100%;background:var(--accent);border-radius:99px;transition:width .25s ease}.prose h2{margin:32px 0 12px}.prose h3{margin:24px 0 8px}.prose li,.prose p{color:var(--ink-2)}.prose ul{padding-left:20px}.prose .note{background:var(--accent-soft);border:1px solid #f3d3dd;padding:14px 16px;border-radius:var(--radius-sm);color:var(--accent-strong);font-size:.9rem}