:root{--bg:#fff;--bg-alt:#f6f8fc;--bg-card:#fff;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#94a3b8;--border:#e6eaf2;--border-light:#eef1f7;--accent:#2563eb;--accent-strong:#1d4ed8;--accent-soft:#2563eb14;--accent-gradient-from:#2563eb;--accent-gradient-to:#7c3aed;--teal:#0d9488;--radius:14px;--radius-lg:20px;--shadow-sm:0 1px 3px #0f172a0d;--shadow-md:0 8px 30px #0f172a12;--shadow-lg:0 24px 60px #0f172a1f}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;scroll-padding-top:84px;font-size:16px}body{background:var(--bg);color:var(--text-secondary);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.7}#root{flex-direction:column;min-height:100vh;display:flex}a{color:inherit;text-decoration:none}::selection{color:var(--text-primary);background:#2563eb2e}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}.container{max-width:1120px;margin:0 auto;padding:0 28px}h1,h2,h3,h4{color:var(--text-primary);font-weight:700;line-height:1.3}h1{letter-spacing:-.02em;font-size:3rem}h2{letter-spacing:-.01em;font-size:2rem}h3{font-size:1.1rem}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s,border-color .2s}.card:hover{box-shadow:var(--shadow-md);border-color:#dbe2ee;transform:translateY(-3px)}.navbar{z-index:50;-webkit-backdrop-filter:saturate(180%)blur(12px);backdrop-filter:saturate(180%)blur(12px);border-bottom:1px solid var(--border-light);background:#ffffffdb;position:sticky;top:0}.navbar-inner{justify-content:space-between;align-items:center;height:68px;display:flex}.brand{align-items:center;gap:10px;display:flex}.brand-mark{background:linear-gradient(135deg, var(--accent-gradient-from), var(--accent-gradient-to));color:#fff;border-radius:9px;place-items:center;width:36px;height:36px;font-size:1.1rem;font-weight:700;display:grid;box-shadow:0 4px 12px #2563eb47}.brand-text{flex-direction:column;line-height:1.1;display:flex}.brand-text strong{color:var(--text-primary);font-size:1.05rem}.brand-text em{color:var(--text-muted);letter-spacing:.06em;font-size:.7rem;font-style:normal}.nav-links{align-items:center;gap:4px;display:flex}.nav-link{color:var(--text-secondary);border-radius:8px;padding:7px 14px;font-size:.92rem;font-weight:500;transition:color .15s,background .15s}.nav-link:hover{color:var(--text-primary);background:var(--accent-soft)}.hero{background:radial-gradient(60% 90% at 85% 0%, #7c3aed1a, transparent 60%), radial-gradient(50% 80% at 10% 10%, #2563eb1a, transparent 60%), var(--bg);padding:88px 0 72px;position:relative;overflow:hidden}.hero-inner{text-align:center;max-width:820px;margin:0 auto}.hero-badge{background:var(--accent-soft);color:var(--accent);border-radius:999px;align-items:center;gap:8px;margin-bottom:24px;padding:6px 14px;font-size:.85rem;font-weight:600;display:inline-flex}.badge-dot{background:var(--teal);border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 4px #0d948826}.hero-title{margin-bottom:20px}.accent-gradient{background:linear-gradient(100deg, var(--accent-gradient-from), var(--accent-gradient-to));-webkit-text-fill-color:transparent;color:#0000;-webkit-background-clip:text;background-clip:text}.hero-subtitle{color:var(--text-secondary);max-width:640px;margin:0 auto 32px;font-size:1.15rem}.hero-subtitle strong{color:var(--text-primary)}.hero-actions{flex-wrap:wrap;justify-content:center;gap:14px;margin-bottom:28px;display:flex}.hero-trust{color:var(--text-muted);flex-wrap:wrap;justify-content:center;gap:22px;font-size:.9rem;list-style:none;display:flex}.hero-trust li{align-items:center;gap:6px;display:flex}.hero-trust svg{color:var(--teal)}.btn{cursor:pointer;border:1px solid var(--border);background:var(--bg-card);color:var(--text-secondary);white-space:nowrap;border-radius:10px;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-family:inherit;font-size:.95rem;font-weight:600;transition:all .15s;display:inline-flex}.btn-lg{border-radius:12px;padding:13px 26px;font-size:1rem}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 6px 18px #2563eb47}.btn-primary:hover{background:var(--accent-strong);border-color:var(--accent-strong)}.btn-ghost{border-color:var(--border-light);color:var(--text-primary);background:0 0}.btn-ghost:hover{border-color:var(--border);background:var(--bg-alt)}.btn-disabled{opacity:.75;cursor:default}.btn-block{width:100%}.btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}.section{padding:84px 0}.section-alt{background:var(--bg-alt)}.section-heading{text-align:center;max-width:660px;margin:0 auto 52px}.section-heading .eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:14px;font-size:.82rem;font-weight:700;display:inline-block}.section-heading h2{margin-bottom:14px}.section-heading p{color:var(--text-muted);font-size:1.05rem}.eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:12px;font-size:.82rem;font-weight:700;display:inline-block}.pillars{grid-template-columns:repeat(3,1fr);gap:22px;display:grid}.pillar{text-align:left;padding:30px 26px}.pillar-icon{background:var(--accent-soft);width:52px;height:52px;color:var(--accent);border-radius:13px;place-items:center;margin-bottom:18px;display:grid}.pillar h3{margin-bottom:10px}.pillar p{color:var(--text-muted);font-size:.95rem}.features{grid-template-columns:repeat(4,1fr);gap:18px;display:grid}.feature{padding:24px 20px}.feature-icon{background:var(--accent-soft);width:42px;height:42px;color:var(--accent);border-radius:11px;place-items:center;margin-bottom:14px;display:grid}.feature h3{margin-bottom:8px;font-size:1rem}.feature p{color:var(--text-muted);font-size:.88rem}.privacy{color:#cbd5e1;background:linear-gradient(#0f172a 0%,#16233f 100%)}.privacy-inner{grid-template-columns:1.5fr 1fr;align-items:center;gap:44px;display:grid}.privacy .section-heading{text-align:left;margin:0 0 26px}.privacy .section-heading h2{color:#fff}.privacy .section-heading .eyebrow{color:#60a5fa}.privacy-list{flex-direction:column;gap:14px;list-style:none;display:flex}.privacy-list li{align-items:flex-start;gap:10px;font-size:1rem;display:flex}.privacy-list svg{color:#34d399;flex-shrink:0;margin-top:4px}.privacy-card{border-radius:var(--radius-lg);background:#ffffff0f;border:1px solid #ffffff1f;padding:32px 28px}.privacy-card svg{color:#60a5fa;margin-bottom:16px}.privacy-card h3{color:#fff;margin-bottom:10px}.privacy-card p{color:#94a3b8;font-size:.95rem}.capabilities{grid-template-columns:repeat(2,1fr);gap:14px;max-width:780px;margin:0 auto;display:grid}.capability{align-items:center;gap:12px;padding:20px 22px;display:flex}.capability:hover{box-shadow:var(--shadow-sm);transform:none}.capability svg{color:var(--teal);flex-shrink:0}.capability span{color:var(--text-primary);font-size:.98rem;font-weight:500}.download-inner{grid-template-columns:1.2fr 1fr;align-items:center;gap:50px;display:grid}.download-copy h2{margin-bottom:16px;font-size:2rem}.download-copy p{color:var(--text-muted);max-width:480px;margin-bottom:26px}.download-actions{flex-wrap:wrap;gap:14px;display:flex}.download-device{place-items:center;display:grid}.device-screen{width:230px;height:470px;box-shadow:var(--shadow-lg), inset 0 0 0 2px #ffffff0d;background:linear-gradient(#0f172a,#1e293b);border:8px solid #0b1220;border-radius:34px;flex-direction:column;gap:14px;padding:24px 18px;display:flex;position:relative}.device-status{background:#1e293b;border-radius:3px;width:70px;height:5px;margin:0 auto}.device-app-icon{background:linear-gradient(135deg, var(--accent-gradient-from), var(--accent-gradient-to));color:#fff;border-radius:14px;place-items:center;width:52px;height:52px;margin:6px auto 2px;font-size:1.4rem;font-weight:700;display:grid}.device-line{background:#ffffff1a;border-radius:6px;height:12px}.device-line-1{width:80%}.device-line-2{width:65%}.device-line-3{background:#60a5fa59;width:45%}.feedback-inner{grid-template-columns:1fr 1.2fr;align-items:start;gap:50px;display:grid}.feedback-copy .section-heading{text-align:left;margin-bottom:20px}.feedback-note{color:var(--text-muted)}.feedback-mail{color:var(--accent);margin:0 4px;font-weight:600}.feedback-mail:hover{color:var(--accent-strong)}.feedback-form{flex-direction:column;gap:18px;padding:30px 28px;display:flex}.feedback-form:hover{box-shadow:var(--shadow-sm);transform:none}.form-row{grid-template-columns:1fr 1fr;gap:14px;display:grid}.form-field{flex-direction:column;gap:7px;display:flex}.form-field>span{color:var(--text-primary);font-size:.88rem;font-weight:600}.form-field input,.form-field textarea{color:var(--text-primary);border:1px solid var(--border);background:var(--bg);resize:vertical;border-radius:10px;padding:11px 14px;font-family:inherit;font-size:.95rem;transition:border-color .15s,box-shadow .15s}.form-field input:focus,.form-field textarea:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #2563eb1f}.form-types{flex-wrap:wrap;gap:8px;display:flex}.type-pill{cursor:pointer;border:1px solid var(--border);background:var(--bg);color:var(--text-secondary);border-radius:999px;padding:7px 15px;font-family:inherit;font-size:.88rem;font-weight:500;transition:all .15s}.type-pill:hover{border-color:var(--border-light);color:var(--text-primary)}.type-pill.active{background:var(--accent);border-color:var(--accent);color:#fff}.form-sent{color:var(--teal);font-size:.9rem;font-weight:500}.form-error{color:#dc2626;font-size:.9rem;font-weight:500}.footer{color:#94a3b8;background:#0f172a;margin-top:auto}.footer-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;padding:40px 28px;display:flex}.footer-brand{align-items:center;gap:12px;display:flex}.footer-brand strong{color:#e2e8f0;display:block}.footer-brand p{font-size:.85rem}.footer-links{flex-direction:column;align-items:flex-start;gap:10px;display:flex}.footer-links a{color:#cbd5e1;align-items:center;gap:7px;font-size:.9rem;display:inline-flex}.footer-links a:hover{color:#fff}.footer-bottom{color:#64748b;border-top:1px solid #ffffff14;padding:18px 28px;font-size:.82rem}@media (width<=960px){h1{font-size:2.4rem}h2{font-size:1.6rem}.pillars{grid-template-columns:1fr}.features{grid-template-columns:repeat(2,1fr)}.privacy-inner,.download-inner,.feedback-inner,.capabilities{grid-template-columns:1fr}}@media (width<=640px){h1{font-size:2rem}.container{padding:0 18px}.hero{padding:60px 0 52px}.section{padding:60px 0}.features,.form-row{grid-template-columns:1fr}.nav-links,.download-device{display:none}}