:root{--primary:#2563EB;--primary-dark:#1D4ED8;--dark:#0F172A;--bg:#F8FAFC;--white:#FFFFFF;--accent:#7C3AED;--muted:#64748B;--border:#E2E8F0;--danger:#DC2626;--warn:#D97706;--shadow-sm:0 1px 2px rgba(15,23,42,.06);--shadow:0 6px 20px rgba(15,23,42,.08);--shadow-lg:0 18px 50px rgba(15,23,42,.14);--radius:14px;--radius-sm:10px;--radius-lg:22px;--max:1180px;--narrow:760px;--font:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--dark);font-family:var(--font);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
.container.narrow{max-width:var(--narrow)}
.muted{color:var(--muted)}
.mt-8{margin-top:8px}
.center-page{text-align:center}
.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-0.01em}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:var(--shadow-sm);font-size:1rem}
.brand-name{font-size:1.05rem}
.nav{display:flex;align-items:center;gap:18px}
.nav-link{color:var(--muted);font-weight:500}
.nav-link:hover{color:var(--dark)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:12px;padding:10px 18px;font-weight:600;font-size:.95rem;transition:transform .12s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;white-space:nowrap;user-select:none}
.btn:active{transform:translateY(1px)}
.btn-sm{padding:8px 14px;font-size:.875rem;border-radius:10px}
.btn-lg{padding:13px 24px;font-size:1rem;border-radius:14px}
.btn-block{width:100%}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 8px 22px rgba(37,99,235,.28)}
.btn-primary:hover{box-shadow:0 12px 28px rgba(37,99,235,.36)}
.btn-primary:disabled{opacity:.55;cursor:not-allowed;box-shadow:none}
.btn-ghost{background:#fff;color:var(--dark);border-color:var(--border)}
.btn-ghost:hover{border-color:#CBD5E1;background:#F8FAFC}
.link-btn{background:none;border:none;color:var(--primary);font-weight:600;padding:0;font-size:.9rem;cursor:pointer}
.link-btn:hover{text-decoration:underline}
.link-btn.block{display:inline-block}
.card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:22px}
.hero{padding:48px 0 32px}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.badge{display:inline-block;background:#EEF2FF;color:var(--primary);font-weight:600;font-size:.78rem;padding:6px 12px;border-radius:999px}
.hero h1{font-size:clamp(2rem,5.2vw,3.4rem);line-height:1.05;letter-spacing:-0.03em;margin:16px 0 14px;font-weight:800}
.grad{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:var(--muted);font-size:1.06rem;max-width:540px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0 20px}
.hero-points{list-style:none;padding:0;margin:6px 0 0;display:flex;flex-wrap:wrap;gap:8px 20px;color:var(--muted);font-size:.93rem}
.hero-visual{display:flex;justify-content:center}
.qr-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:22px 22px 16px;box-shadow:var(--shadow-lg);transform:rotate(-2deg);transition:transform .3s ease}
.qr-card:hover{transform:rotate(0deg)}
.qr-mock{width:220px;height:220px;border-radius:14px;overflow:hidden;display:grid;place-items:center;background:#fff}
.qr-mock svg{width:100%;height:100%}
.qr-caption{text-align:center;margin-top:12px;font-weight:600;color:var(--muted);font-size:.9rem}
.section-title{font-size:clamp(1.5rem,3.4vw,2rem);letter-spacing:-0.02em;margin:0 0 6px;font-weight:800}
.section-sub{color:var(--muted);margin:0 0 28px}
.how{padding:42px 0}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step-num{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:12px}
.step h3{margin:0 0 6px;font-size:1.06rem}
.step p{margin:0;color:var(--muted);font-size:.94rem}
.how-note{margin-top:24px;display:inline-flex;align-items:center;gap:8px;color:var(--warn);font-weight:600;background:#FFFBEB;border:1px solid #FDE68A;padding:10px 14px;border-radius:10px;font-size:.92rem}
.privacy{padding:12px 0 40px}
.privacy-card{display:flex;gap:20px;align-items:flex-start;background:linear-gradient(135deg,#F8FAFC,#EEF2FF);border-color:#DBEAFE}
.privacy-icon{flex:none;width:50px;height:50px;border-radius:14px;background:#fff;color:var(--primary);display:grid;place-items:center;box-shadow:var(--shadow-sm);font-size:1.4rem}
.privacy-card h3{margin:0 0 4px}
.privacy-card p{margin:0;color:var(--muted);font-size:.95rem}
.my-batches{padding:12px 0 50px}
.owned-list{display:grid;gap:12px}
.owned-item{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;transition:transform .15s ease,box-shadow .15s ease}
.owned-item:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.owned-info{display:flex;flex-direction:column;gap:2px}
.owned-info span{color:var(--muted);font-size:.9rem}
.owned-arrow{color:var(--primary);font-size:1.3rem}
.page-head{padding:30px 0 20px}
.page-head h1{margin:6px 0 6px;font-size:clamp(1.5rem,4vw,2rem);letter-spacing:-0.02em}
.back-link{color:var(--muted);font-size:.9rem;font-weight:500}
.back-link:hover{color:var(--dark)}
.upload-card{padding:20px}
.dropzone{border:2px dashed #CBD5E1;border-radius:var(--radius);background:#F8FAFC;padding:40px 20px;text-align:center;cursor:pointer;transition:border-color .18s,background .18s,transform .12s;outline:none}
.dropzone:hover,.dropzone:focus-visible{border-color:var(--primary);background:#EFF6FF}
.dropzone.dragover{border-color:var(--primary);background:#DBEAFE;transform:scale(1.005)}
.dz-icon{font-size:2.2rem;margin-bottom:8px}
.dz-title{font-weight:700;margin:4px 0;font-size:1.06rem}
.dz-sub{color:var(--muted);margin:0;font-size:.88rem;max-width:460px;margin-inline:auto}
.file-list-wrap{margin-top:22px}
.file-list-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.file-list-title{font-size:1rem;margin:0}
.file-list{list-style:none;margin:0;padding:0;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;max-height:340px;overflow-y:auto;background:#fff}
.file-row{display:grid;grid-template-columns:26px 1fr auto 34px;align-items:center;gap:10px;padding:10px 12px;border-bottom:1px solid var(--border);font-size:.92rem}
.file-row:last-child{border-bottom:none}
.file-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.file-size{color:var(--muted);font-variant-numeric:tabular-nums}
.file-remove{width:30px;height:30px;border-radius:8px;border:1px solid transparent;background:transparent;color:var(--muted);font-size:.9rem}
.file-remove:hover{background:#FEE2E2;color:var(--danger);border-color:#FECACA}
.totals{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;margin:14px 2px;font-size:.9rem;color:var(--muted)}
.totals strong{color:var(--dark)}
.progress-panel{margin-top:20px}
.progress-head{display:flex;justify-content:space-between;margin-bottom:10px;font-weight:600}
.progress-bar{height:10px;background:#E2E8F0;border-radius:999px;overflow:hidden}
.progress-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--primary),var(--accent));transition:width .18s ease}
.progress-files{list-style:none;margin:14px 0 0;padding:0;max-height:220px;overflow-y:auto;font-size:.85rem;color:var(--muted)}
.progress-file{display:flex;justify-content:space-between;padding:6px 2px;border-bottom:1px dashed var(--border)}
.result-panel{margin-top:20px}
.result-panel h2{margin:0 0 6px;font-size:1.15rem}
.failed-list{margin:10px 0 0;padding-left:18px;color:var(--danger);font-size:.9rem}
.success-head{text-align:center;padding:30px 0 24px}
.success-check{width:62px;height:62px;border-radius:50%;background:#DCFCE7;color:#16A34A;display:grid;place-items:center;margin:0 auto 14px;font-size:1.8rem;font-weight:700}
.success-head h1{margin:0 0 6px;font-size:clamp(1.4rem,4vw,1.9rem);letter-spacing:-0.02em}
.share-grid{display:grid;grid-template-columns:320px 1fr;gap:22px;align-items:start}
.qr-box{text-align:center}
.qr-image{width:100%;max-width:280px;margin:0 auto 10px;background:#fff;border-radius:12px;padding:10px}
.qr-image svg{width:100%;height:auto}
.qr-note{font-size:.85rem;margin:10px 0 0}
.meta-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--border);font-size:.95rem}
.meta-row:last-of-type{border-bottom:none}
.meta-label{color:var(--muted)}
.meta-value{font-weight:600;font-variant-numeric:tabular-nums}
.link-field{display:flex;gap:8px;margin:14px 0 16px}
.link-field input{flex:1;min-width:0;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#F8FAFC;font-size:.9rem;font-family:ui-monospace,Menlo,Consolas,monospace}
.link-field input:focus{outline:2px solid rgba(37,99,235,.35);border-color:var(--primary)}
.action-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.page-gallery{background:#0B1220;color:#E2E8F0}
.page-gallery .site-footer{background:#0B1220;border-color:#1E293B;color:#94A3B8}
.page-gallery .site-footer .muted{color:#64748B}
.gallery-header{position:sticky;top:0;z-index:30;background:rgba(11,18,32,.86);backdrop-filter:saturate(180%) blur(10px);-webkit-backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid #1E293B}
.gallery-title{margin:0;font-size:1.4rem;letter-spacing:-0.01em;color:#F8FAFC;font-weight:800}
.gallery-sub{margin:4px 0 0;display:flex;gap:8px;flex-wrap:wrap}
.pill{display:inline-block;background:#1E293B;color:#CBD5E1;padding:4px 10px;border-radius:999px;font-size:.78rem;font-weight:600}
.pill-warn{background:#422006;color:#FCD34D}
.gallery-main{padding:26px 20px 60px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.grid-item{position:relative;margin:0;border-radius:14px;overflow:hidden;background:#111827;aspect-ratio:1/1}
.media-btn{display:block;width:100%;height:100%;padding:0;border:none;background:none;cursor:zoom-in;position:relative;overflow:hidden}
.media-btn img,.media-btn video{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;display:block}
.media-btn:hover img,.media-btn:hover video{transform:scale(1.06)}
.video-card{position:relative;width:100%;height:100%;background:#000}
.video-card video{pointer-events:none}
.video-play{position:absolute;inset:0;display:grid;place-items:center;color:#fff;background:rgba(0,0,0,.25);transition:background .2s;font-size:2.5rem}
.media-btn:hover .video-play{background:rgba(0,0,0,.4)}
.item-overlay{position:absolute;left:0;right:0;bottom:0;padding:22px 10px 10px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.75));color:#fff;text-align:left;font-size:.78rem;opacity:0;transition:opacity .2s;display:flex;flex-direction:column;gap:2px}
.media-btn:hover .item-overlay,.media-btn:focus-visible .item-overlay{opacity:1}
.item-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.item-size{color:#CBD5E1}
.item-type-badge{position:absolute;top:8px;left:8px;background:rgba(15,23,42,.75);color:#E2E8F0;font-size:.66rem;font-weight:700;letter-spacing:.05em;padding:3px 7px;border-radius:6px}
.item-download{position:absolute;top:8px;right:8px;width:34px;height:34px;border-radius:9px;background:rgba(15,23,42,.72);color:#fff;display:grid;place-items:center;opacity:0;transition:opacity .2s,background .2s;backdrop-filter:blur(6px);font-size:.9rem;font-weight:700}
.grid-item:hover .item-download,.item-download:focus-visible{opacity:1}
.item-download:hover{background:var(--primary)}
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(2,6,23,.96);display:flex;align-items:center;justify-content:center;padding:40px;animation:fade .18s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.lb-stage{max-width:min(1200px,92vw);max-height:78vh;display:flex;align-items:center;justify-content:center}
.lb-stage img,.lb-stage video{max-width:100%;max-height:78vh;border-radius:8px;box-shadow:0 30px 80px rgba(0,0,0,.6);object-fit:contain}
.lb-close,.lb-nav{position:absolute;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);color:#fff;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;font-size:1.4rem;transition:background .18s}
.lb-close:hover,.lb-nav:hover{background:rgba(255,255,255,.2)}
.lb-close{top:18px;right:18px}
.lb-prev{left:18px;top:50%;transform:translateY(-50%)}
.lb-next{right:18px;top:50%;transform:translateY(-50%)}
.lb-bar{position:absolute;left:0;right:0;bottom:0;padding:14px 20px;display:flex;align-items:center;gap:14px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.75));color:#fff;flex-wrap:wrap}
.lb-name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:45vw}
.lb-meta{color:#94A3B8;font-size:.88rem}
.lb-bar .btn{margin-left:auto}
body.lb-open{overflow:hidden}
.expired-card{text-align:center;padding:40px 26px}
.expired-icon{width:68px;height:68px;border-radius:50%;background:#FEF3C7;color:var(--warn);display:grid;place-items:center;margin:0 auto 16px;font-size:1.8rem}
.expired-card h1{margin:0 0 8px;font-size:1.4rem;letter-spacing:-0.01em}
.expired-card .btn{margin-top:18px}
.empty-state{text-align:center;padding:50px 20px}
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,24px);background:var(--dark);color:#fff;padding:10px 18px;border-radius:10px;font-size:.9rem;font-weight:600;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:200;box-shadow:var(--shadow-lg)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.site-footer{border-top:1px solid var(--border);background:#fff;margin-top:30px}
.footer-inner{display:flex;justify-content:space-between;align-items:center;padding:22px 20px;font-size:.88rem;color:var(--muted);flex-wrap:wrap;gap:8px}
@media(max-width:1024px){.hero-inner{grid-template-columns:1fr;gap:34px}.hero-visual{order:-1}.qr-card{transform:none}.grid{grid-template-columns:repeat(3,1fr)}.share-grid{grid-template-columns:1fr}.qr-box{order:2}}
@media(max-width:768px){.steps{grid-template-columns:1fr}.nav-link{display:none}.grid{grid-template-columns:repeat(2,1fr);gap:10px}.hero{padding:30px 0 22px}.action-grid{grid-template-columns:1fr}.lb-name{max-width:60vw}.lb-bar .btn{margin-left:0}.gallery-main{padding:18px 14px 50px}.footer-inner{justify-content:center;text-align:center}}
@media(max-width:480px){.container{padding:0 14px}.card{padding:18px}.qr-mock{width:180px;height:180px}.hero-cta .btn{flex:1 1 auto}.link-field{flex-direction:column}.link-field .btn{width:100%}.lb-close,.lb-nav{width:42px;height:42px}.lb-prev{left:8px}.lb-next{right:8px}.lb-close{top:10px;right:10px}}