:root{color-scheme:light;--bg:#edf4ff;--surface:rgba(255,255,255,.78);--field:#f3f7fd;--text:#101e45;--muted:#8191af;--border:#dfe9f8;--blue:#1677ff;--shadow:0 8px 30px #2c65ae08;--glow:#dceaff}
:root[data-mode=dark]{color-scheme:dark;--bg:#111c2a;--surface:rgba(40,53,69,.8);--field:#202d3d;--text:#ecf2ff;--muted:#9eb0cc;--border:#3a495c;--shadow:0 8px 30px #00000016;--glow:#253750}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 45% 0,var(--glow),transparent 70%),var(--bg);color:var(--text);font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;font-size:14px;min-height:100vh}main{max-width:1120px;margin:auto;padding:32px 28px}header{display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--text)}.brand strong{font-size:26px;letter-spacing:-.6px}.brand small,small{display:block;color:var(--muted);font-size:12px;margin-top:5px}.cloud{position:relative;color:#338aff;font-size:64px;line-height:1;filter:drop-shadow(0 4px 5px #3691ff40)}.cloud b{font-size:34px;color:white;position:absolute;left:21px;top:24px}nav{display:flex;padding:6px;background:var(--surface);border:1px solid var(--border);border-radius:18px;gap:4px;box-shadow:var(--shadow)}button,.button{border:1px solid var(--border);background:var(--field);color:var(--text);border-radius:12px;padding:11px 16px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;display:inline-flex;justify-content:center;align-items:center;gap:7px;transition:filter .15s,transform .15s}button:hover,.button:hover{filter:brightness(1.06)}button:active{transform:translateY(1px)}button:disabled{opacity:.45;cursor:default}nav button{border:0;background:transparent;color:var(--muted)}button.active,.primary{color:white;background:linear-gradient(135deg,#45acff,#1262ff);border-color:#479aff;box-shadow:inset 0 1px 3px #ffffff55,0 4px 12px #1278ff26}.intro{text-align:center;padding:44px 0 24px}.intro h1{font-size:27px;margin:0 0 13px;font-weight:750;letter-spacing:.4px}.intro p{color:var(--muted);letter-spacing:5px;margin:0}.columns{display:grid;grid-template-columns:1fr 1fr;gap:20px}.card{background:var(--surface);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow);padding:24px}.card-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:18px}h2{font-size:18px;margin:0;display:flex;align-items:center;gap:10px}.muted{color:var(--muted);font-size:13px}.icon{display:inline-grid;place-items:center;border-radius:10px;width:32px;height:34px;color:#2185ff;background:#2b91ff12;font-size:26px}.purple{color:#826aff}.dropzone{height:192px;display:flex;flex-direction:column;align-items:center;justify-content:center;border:1.5px dashed #729dff88;border-radius:14px;background:var(--field);cursor:pointer;gap:10px}.dropzone.dragover{background:#428cff25;border-color:var(--blue)}.dropzone>span:last-child{font-size:13px;color:#428aff}.upload-cloud{font-size:68px;line-height:1;position:relative;color:#6391fa;filter:drop-shadow(0 5px 5px #286df044)}.upload-cloud b{font-size:36px;position:absolute;left:23px;top:21px;color:#fff}.field-label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin:18px 0 9px}input,select,textarea{font:inherit;background:var(--field);color:var(--text);border:1px solid var(--border);border-radius:12px;padding:12px;width:100%;outline:none}input:focus,select:focus,textarea:focus{border-color:#4e93ff;box-shadow:0 0 0 3px #3691ff12}::placeholder{color:var(--muted)}select{font-size:13px}.presets{display:flex;gap:7px}.presets button{flex:1;padding:9px 4px;font-size:12px;white-space:nowrap}.custom-time{display:flex;align-items:center;gap:12px;margin-top:10px}.custom-time input{width:110px}.note{display:flex;align-items:center;gap:12px;margin-top:22px;font-size:13px}.check{display:grid;place-items:center;background:linear-gradient(135deg,#4caaff,#176cff);color:white;width:38px;height:24px;border-radius:20px}.text-card{display:flex;flex-direction:column}.text-card textarea{resize:vertical;min-height:183px;flex:1;margin-top:10px;line-height:1.65}.counter{text-align:right;color:var(--muted);font-size:12px;margin-top:8px}.actions{display:flex;gap:10px;margin-top:20px}.actions>*{flex:1}.features{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:22px 0;padding:22px}.features>div{display:flex;align-items:center;gap:13px}.features i{font-style:normal;font-size:28px;display:grid;place-items:center;background:#1eca8918;color:#1dbd80;width:48px;height:48px;border-radius:50%}.features>div:nth-child(2) i{color:#ffb420;background:#ffca2415}.features>div:nth-child(3) i{color:#9072ff;background:#8e64ff16}.features>div:nth-child(4) i{color:#3284ff;background:#3284ff16}.features strong{font-size:14px}.recent h2{font-size:15px}.link{border:0;background:none;color:#438aff;padding:4px 8px;font-size:12px}.item{display:flex;align-items:center;gap:15px;padding:15px 0;border-top:1px solid var(--border)}.item-icon{font-size:27px;color:#328bff;background:#328bff0c;padding:10px;border-radius:50%;min-width:46px;text-align:center}.item-info{min-width:0;flex:1}.item-name{display:block;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border:0;background:none;padding:0;font-size:14px;justify-content:flex-start}.item small{font-size:11px;line-height:1.6}.item-link{color:#3589ff;font-size:12px;font-weight:400;max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.item-delete{border:0;background:none;color:var(--muted);padding:8px}.empty{text-align:center;color:var(--muted);padding:24px}footer{text-align:center;color:var(--muted);font-size:12px;padding:25px 0 0}.login{max-width:440px;margin:24px auto 60px}.login form{display:grid;gap:14px;margin-top:22px}#toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);border:1px solid var(--border);border-radius:14px;background:var(--text);color:var(--bg);padding:14px 22px;z-index:30;max-width:90vw;box-shadow:var(--shadow)}progress{width:100%;height:8px;accent-color:#2784ff;margin-top:20px}#upload-status p{font-size:12px;color:var(--muted)}dialog{border:1px solid var(--border);border-radius:20px;background:var(--bg);color:var(--text);padding:26px;width:min(700px,94vw);box-shadow:0 25px 80px #0004}dialog::backdrop{background:#08132688;backdrop-filter:blur(5px)}dialog h2{overflow-wrap:anywhere}pre{background:var(--field);border:1px solid var(--border);border-radius:12px;padding:18px;white-space:pre-wrap;overflow:auto;max-height:55vh;word-break:break-word;font-size:14px;line-height:1.7}[hidden]{display:none!important}:focus-visible{outline:2px solid #3792ff;outline-offset:3px}@media(max-width:720px){main{padding:22px 16px}header{align-items:flex-start}.brand{gap:8px}.brand strong{font-size:19px}.cloud{font-size:46px}.cloud b{font-size:24px;left:16px;top:18px}nav{padding:4px;gap:1px}nav button{padding:8px;font-size:16px}nav span{display:none}.intro{padding:32px 0 24px}.intro h1{font-size:22px;line-height:1.6}.columns{grid-template-columns:1fr}.card{padding:20px}.features{grid-template-columns:1fr 1fr;gap:22px}.features i{width:38px;height:38px}.features strong{font-size:12px}.features small{font-size:10px}.item{gap:8px}.item-link{font-size:0;padding:10px}.item-link:after{content:'复制链接';font-size:11px}.item-icon{display:none}.item-name{font-size:13px}.recent .card-title{flex-wrap:wrap}.actions{flex-wrap:wrap}}