:root{--bg: #f6f8fb;--surface: #ffffff;--border: #e3e8ef;--text: #1d2939;--muted: #667085;--primary: #2563eb;--primary-dark: #1d4ed8;--danger: #dc2626;--green: #16a34a;--radius: 10px;--shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .04)}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}button{font:inherit;cursor:pointer}input{font:inherit}.app{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;align-items:center;gap:16px;padding:10px 20px;background:var(--surface);border-bottom:1px solid var(--border)}.brand{font-size:18px;font-weight:700}.topbar-right{margin-left:auto;display:flex;align-items:center;gap:12px}.user-email{color:var(--muted);font-size:14px}.body{display:flex;flex:1;min-height:0}.sidebar{width:230px;padding:16px 12px;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;gap:4px}.nav-item{padding:10px 14px;border-radius:var(--radius);text-decoration:none;color:var(--text);font-size:15px}.nav-item:hover{background:var(--bg)}.nav-item.active{background:#e7eefc;color:var(--primary-dark);font-weight:600}.content{flex:1;overflow-y:auto;padding:24px 28px}.hamburger{display:none;background:none;border:none;font-size:20px}.storage-meter{margin-top:auto;padding:12px}.meter-track{height:6px;background:var(--border);border-radius:3px;overflow:hidden}.meter-large{height:12px;border-radius:6px;margin:12px 0}.meter-fill{height:100%;background:var(--primary);border-radius:inherit;transition:width .3s}.meter-danger{background:var(--danger)}.meter-label{margin-top:8px;font-size:12px;color:var(--muted)}.meter-plan{font-size:12px;font-weight:600;margin-top:2px}.btn{padding:8px 16px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);color:var(--text)}.btn:hover{background:var(--bg)}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-ghost{border:none;background:none;color:var(--muted)}.btn-block{width:100%}.icon-btn{position:relative;border:none;background:none;font-size:15px;padding:4px 6px;border-radius:6px}.icon-btn:hover{background:var(--bg)}.link{background:none;border:none;color:var(--primary);padding:0;text-decoration:underline}.bell{position:relative}.badge{position:absolute;top:-4px;right:-4px;background:var(--danger);color:#fff;font-size:10px;border-radius:8px;padding:1px 5px}.dropdown{position:absolute;right:0;top:36px;width:320px;max-height:380px;overflow-y:auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);z-index:30}.dropdown-title{padding:12px 14px;font-weight:700;border-bottom:1px solid var(--border)}.dropdown-empty{padding:20px;color:var(--muted);text-align:center}.notif{padding:10px 14px;border-bottom:1px solid var(--border)}.notif-unread{background:#eff6ff}.notif-title{font-weight:600;font-size:14px}.notif-msg{font-size:13px;color:var(--muted)}.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}.page-head h2{margin:0}.actions{display:flex;gap:8px}.crumbs{font-size:16px}.crumbs a{color:var(--primary);text-decoration:none}.crumb-sep{margin:0 8px;color:var(--muted)}.crumb-current{font-weight:700}.section-title{margin-top:32px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.hint{color:var(--muted);font-size:13px}.file-table{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}.file-table th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);padding:10px 14px;border-bottom:1px solid var(--border)}.file-table td{padding:10px 14px;border-bottom:1px solid var(--border);font-size:14px}.file-table tr:last-child td{border-bottom:none}.file-table tr:hover td{background:#fafbfd}.file-link{background:none;border:none;color:var(--text);font-weight:600;padding:0}.file-link:hover{color:var(--primary)}.col-size,.col-date{white-space:nowrap;color:var(--muted);width:110px}.col-actions{text-align:right;white-space:nowrap;width:150px}.empty{text-align:center;color:var(--muted);padding:60px 20px}.empty-icon{font-size:42px;margin-bottom:8px}.drive.dragging{outline:2px dashed var(--primary);outline-offset:-2px;border-radius:var(--radius)}.upload-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;margin-bottom:16px;box-shadow:var(--shadow)}.upload-row{display:flex;align-items:center;gap:12px;padding:4px 0}.upload-name{flex:0 0 220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.upload-track{flex:1}.upload-error{color:var(--danger);font-size:13px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#10182866;display:flex;align-items:center;justify-content:center;z-index:50}.modal{background:var(--surface);border-radius:var(--radius);padding:24px;width:min(440px,92vw);box-shadow:var(--shadow)}.modal h3{margin-top:0}.share-row{display:flex;gap:8px;margin:12px 0}.share-row input{flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius)}.plan-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}.plan-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;text-align:center;box-shadow:var(--shadow)}.plan-current{border-color:var(--primary);border-width:2px}.plan-name{font-weight:700;font-size:17px}.plan-size{font-size:26px;font-weight:800;margin:8px 0;color:var(--primary)}.plan-price{color:var(--muted);margin-bottom:14px}.plan-badge{color:var(--green);font-weight:600}.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#eef4ff,#f6f8fb);padding:16px}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);padding:32px;width:min(400px,94vw)}.auth-brand{font-size:24px;font-weight:800;text-align:center}.auth-tagline{text-align:center;color:var(--muted);margin-top:4px}.auth-card label{display:block;font-size:14px;font-weight:600;margin-bottom:14px}.auth-card input{display:block;width:100%;margin-top:6px;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius)}.auth-card input:focus{outline:2px solid var(--primary);border-color:transparent}.auth-switch{text-align:center;color:var(--muted);font-size:14px;margin-bottom:0}.form-error{background:#fef2f2;color:var(--danger);border:1px solid #fecaca;border-radius:var(--radius);padding:10px 12px;font-size:13px;margin-bottom:12px}.form-info{background:#f0fdf4;color:var(--green);border:1px solid #bbf7d0;border-radius:var(--radius);padding:10px 12px;font-size:13px;margin-bottom:12px}@media (max-width: 760px){.hamburger{display:block}.sidebar{position:fixed;top:53px;bottom:0;left:0;z-index:40;transform:translate(-100%);transition:transform .2s;box-shadow:var(--shadow)}.sidebar.open{transform:translate(0)}.content{padding:16px}.user-email,.col-date{display:none}.upload-name{flex-basis:120px}}.landing{background:var(--surface);color:var(--text)}.landing-nav{display:flex;align-items:center;justify-content:space-between;padding:16px clamp(16px,6vw,64px);position:sticky;top:0;background:#ffffffd9;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);z-index:10}.landing-brand{font-size:20px;font-weight:800}.landing-links{display:flex;align-items:center;gap:18px}.landing-links a{color:var(--text);text-decoration:none;font-weight:500}.landing-links a.btn{font-weight:600}.hero{text-align:center;padding:clamp(48px,9vw,110px) 20px 40px;background:radial-gradient(900px 420px at 50% -10%,#dbeafe 0%,transparent 70%),linear-gradient(180deg,#f8fafc,#fff)}.hero h1{font-size:clamp(34px,6vw,60px);margin:0 auto 16px;max-width:780px;letter-spacing:-.02em}.hero-accent{background:linear-gradient(90deg,var(--primary),#7c3aed);-webkit-background-clip:text;background-clip:text;color:transparent}.hero-sub{font-size:clamp(16px,2.2vw,20px);color:var(--muted);max-width:620px;margin:0 auto 28px}.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.btn-lg{padding:13px 26px;font-size:17px;border-radius:12px}.hero-fineprint{color:var(--muted);font-size:13px;margin-top:14px}.hero-mock{max-width:560px;margin:48px auto 0;border:1px solid var(--border);border-radius:16px;box-shadow:0 24px 60px #1018281f;overflow:hidden;text-align:left;background:var(--surface)}.mock-bar{display:flex;gap:6px;padding:10px 14px;background:#f1f5f9;border-bottom:1px solid var(--border)}.mock-dot{width:10px;height:10px;border-radius:50%;background:#cbd5e1}.mock-body{padding:14px 18px 18px}.mock-row{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid var(--border);font-size:15px}.mock-muted{color:var(--muted);font-size:13px}.mock-meter{height:8px;border-radius:4px;background:var(--border);margin-top:16px;overflow:hidden}.mock-meter-fill{width:24%;height:100%;background:linear-gradient(90deg,var(--primary),#7c3aed)}.mock-usage{margin-top:6px}.features,.pricing{padding:clamp(48px,7vw,90px) clamp(16px,6vw,64px);text-align:center}.features h2,.pricing h2,.closer h2{font-size:clamp(26px,4vw,38px);margin:0 0 36px;letter-spacing:-.01em}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;max-width:1100px;margin:0 auto;text-align:left}.feature-card{border:1px solid var(--border);border-radius:14px;padding:24px;background:var(--surface);transition:transform .15s,box-shadow .15s}.feature-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px #1018281a}.feature-icon{font-size:28px}.feature-card h3{margin:10px 0 6px}.feature-card p{color:var(--muted);margin:0;font-size:15px;line-height:1.55}.pricing{background:#f8fafc}.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;max-width:860px;margin:0 auto}.price-card{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px 22px 22px}.price-popular{border:2px solid var(--primary);box-shadow:0 16px 40px #2563eb26}.price-flag{position:absolute;top:-13px;left:50%;transform:translate(-50%);background:var(--primary);color:#fff;font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;white-space:nowrap}.price-name{font-weight:700;font-size:17px}.price-size{font-size:34px;font-weight:800;color:var(--primary);margin:6px 0}.price-amount{font-size:22px;font-weight:700;margin-bottom:18px}.price-note{font-size:13px;font-weight:500;color:var(--muted)}.closer{text-align:center;padding:clamp(48px,7vw,90px) 20px;background:linear-gradient(135deg,#1d4ed8,#7c3aed);color:#fff}.closer h2{color:#fff}.closer .btn-primary{background:#fff;border-color:#fff;color:var(--primary-dark)}.landing-footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;padding:22px clamp(16px,6vw,64px);border-top:1px solid var(--border);font-size:14px}@media (max-width: 560px){.landing-links a:not(.btn-primary){display:none}}.brand-mark{width:26px;height:26px;vertical-align:-6px}.auth-logo{display:block;width:56px;height:56px;margin:0 auto 6px}.nav-android{font-weight:600}.get-app{padding:clamp(48px,7vw,90px) clamp(16px,6vw,64px)}.get-app-inner{display:flex;align-items:center;gap:clamp(24px,5vw,56px);max-width:900px;margin:0 auto;background:#f0f6ff;border:1px solid #dbeafe;border-radius:20px;padding:clamp(24px,4vw,48px)}.get-app-logo{width:clamp(96px,14vw,160px);height:auto;flex-shrink:0}.get-app-copy h2{margin:0 0 10px;font-size:clamp(24px,3.4vw,32px)}.get-app-copy p{color:var(--muted);margin:0 0 18px;line-height:1.55}@media (max-width: 640px){.get-app-inner{flex-direction:column;text-align:center}}