/* Shared design system: cream4u / Flow. */
:root{color-scheme:light;--bg:#e9edf2;--card:rgba(255,255,255,.64);--text:#293546;--muted:#718094;--line:#d8e0e9;--accent:#364e6d;--accent-soft:#e5edf7;--radius:22px;--font-latin:"Google Sans Flex";--font-mono:var(--font-latin);--font-cjk:"PuHuiTi Site","PingFang SC","Microsoft YaHei",sans-serif;--font-site:var(--font-latin),var(--font-cjk);--ease:cubic-bezier(.2,.8,.2,1)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;min-width:280px;min-height:100vh;color:var(--text);background:radial-gradient(ellipse at 5% 35%,#e0e9ee 0,transparent 55%),radial-gradient(ellipse at 95% 60%,#e0e5f0 0,transparent 50%),var(--bg);background-attachment:fixed;font-family:var(--font-site);font-synthesis:none;-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit;color:inherit}button,a{-webkit-tap-highlight-color:transparent;touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button:disabled{cursor:default}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:500}a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:2px solid #547da8;outline-offset:4px}button:active:not(:disabled),.flow-button:active{transform:scale(.98)}[hidden]{display:none!important}::selection{background:#cbdcf0;color:#263950}code,pre,kbd{font-family:var(--font-site)}
.flow-icon{width:22px;height:22px;flex-shrink:0;vertical-align:middle}.flow-site{min-height:100vh;display:flex;flex-direction:column}.flow-nav{width:min(1120px,calc(100% - 80px));height:94px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:20px;position:relative;z-index:50}.flow-brand{font-size:25px;font-weight:650;letter-spacing:-1.1px;white-space:nowrap}.flow-brand>span{font-weight:400;color:#85909d}.flow-navigation{display:flex;align-items:center;gap:3px;padding:5px;background:#ffffff66;backdrop-filter:blur(18px);border:1px solid #ffffffb8;border-radius:100px;position:relative}.flow-navigation>a,.flow-menu>summary{font-size:12px;font-weight:500;min-height:38px;padding:10px 21px;border-radius:100px;display:flex;align-items:center;justify-content:center;gap:8px;cursor:pointer}.flow-navigation>a[aria-current=page],.flow-menu>summary.current,.flow-menu[open]>summary{background:#fffd;box-shadow:0 1px 5px #47607a0a}.flow-menu>summary::-webkit-details-marker{display:none}.flow-menu>summary{list-style:none}.flow-menu>summary>.flow-icon{width:13px;height:13px}.flow-menu-panel{position:absolute;right:0;top:60px;width:480px;max-width:calc(100vw - 32px);padding:16px;display:grid;grid-template-columns:1fr 1fr;gap:16px;background:#f3f6faf5;backdrop-filter:blur(24px);border:1px solid #fff;border-radius:21px;box-shadow:0 20px 60px #3c536d26}.flow-menu-label{display:block;padding:5px 9px 12px;font-size:10px;color:var(--muted)}.flow-menu-panel a{display:flex;align-items:center;gap:10px;padding:9px 8px;border-radius:11px;font-size:12px;min-height:44px}.flow-menu-panel a:hover,.flow-menu-panel a[aria-current=page]{background:#fff}.flow-menu-panel a>.flow-icon{width:13px;height:13px;margin-left:auto;color:#8a9bad}.flow-menu-panel .flow-tool-icon{width:30px;height:30px;border-radius:9px}.flow-menu-panel .flow-tool-icon>.flow-icon{width:17px;height:17px}.flow-tool-icon{width:36px;height:36px;display:grid;place-items:center;border-radius:11px;flex-shrink:0}.flow-tool-icon>.flow-icon{width:19px;height:19px}.tone-blue{background:#e0eaff;color:#4f78b2}.tone-green{background:#e0f0e9;color:#4b8979}.tone-rose{background:#f6e5df;color:#ad7c67}.tone-sand{background:#eeeada;color:#95865b}
.flow-view{flex:1;width:100%;outline:0;animation:flow-in .25s var(--ease)}.skip{position:fixed;top:10px;left:16px;padding:12px 18px;background:#fff;border-radius:12px;color:#293546;z-index:100;transform:translateY(-160%);font-size:13px}.skip:focus{transform:none}.flow-footer{width:min(1120px,calc(100% - 80px));margin:50px auto 0;padding:25px 0 30px;display:flex;justify-content:space-between;align-items:center;gap:20px;color:#7c8899;border-top:1px solid #cdd7e2;font-size:11px}.flow-footer>div{display:flex;gap:24px}.flow-footer a{display:flex;align-items:center;gap:6px;min-height:30px}.flow-footer .flow-icon{width:12px;height:12px}.flow-footer>span{font-size:15px;letter-spacing:-.4px}
.page-intro{width:min(840px,calc(100% - 64px));margin:38px auto 30px;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:0;text-align:left}.page-intro h1{font-size:43px;letter-spacing:-1.8px;font-weight:500;line-height:1.2}.page-intro p{margin-top:10px;font-size:13px;line-height:1.6;color:var(--muted)}.app{width:min(840px,calc(100% - 64px));margin:0 auto;padding:0 0 15px}.app>.panel,.panel,.result{padding:30px;border:1px solid #ffffffda;border-radius:var(--radius);background:var(--card);backdrop-filter:blur(16px);box-shadow:0 15px 45px -30px #536b8b38}.panel h2{font-size:18px;margin:0 0 20px;letter-spacing:-.4px}.panel .panel,.panel .result{backdrop-filter:none;background:#ffffff91;box-shadow:none}.result{margin-top:16px;padding:23px}.main-tabs{display:flex;gap:4px;padding:5px;margin:0 0 16px;border:1px solid #ffffff83;border-radius:16px;background:#dfe5ed99}.main-tab{flex:1;height:45px;border:0;border-radius:11px;color:#748196;background:transparent;font-size:14px;font-weight:500;transition:background .18s,box-shadow .18s}.main-tab.active{color:#2c4059;background:#ffffffed;box-shadow:0 2px 5px #415c7b08}.type-tabs{display:flex;gap:5px;margin-bottom:18px}.type-tab{min-height:38px;padding:9px 17px;border:0;border-radius:10px;color:var(--muted);background:transparent;font-size:12px}.type-tab.active{color:#334e70;background:#e4ebf4}.drop-zone,.drop{position:relative;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:16px;min-height:220px;padding:28px;border:1px dashed #bfcddd;border-radius:17px;background:#eef3f9aa;color:#71839a;font-size:13px;line-height:1.7;text-align:center;cursor:pointer;transition:background .2s,border-color .2s}.drop-zone:hover,.drop-zone.dragging,.drop:hover,.drop.over{background:#e5eef8;border-color:#7b97b8}.drop-zone input{position:absolute;width:1px;height:1px;opacity:0}.drop-zone svg{width:30px;height:30px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}.drop-zone span{max-width:100%;overflow-wrap:anywhere}.drop-zone:focus-visible,.drop:focus-visible{outline:2px solid #547da8;outline-offset:4px}
input:not([type=file]),textarea,select{width:100%;min-width:0;border:1px solid #d4dee9;border-radius:13px;background:#f7f9fc;color:#2d4059;outline:none;padding:14px 16px;font-size:14px;line-height:1.5;transition:border-color .18s,box-shadow .18s}input:not([type=file]){min-height:48px}textarea{resize:vertical;min-height:140px;max-height:480px;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere}textarea.id-input{min-height:54px;height:58px;font-size:13px;resize:none}.pass-input{margin-top:16px}input::placeholder,textarea::placeholder{color:#8c9bad}input:focus,textarea:focus,select:focus{border-color:#7c9aba;box-shadow:0 0 0 3px #6d91b517}.action,.flow-button{display:inline-flex;justify-content:center;align-items:center;gap:25px;min-height:47px;border:0;border-radius:13px;padding:12px 24px;background:#364e6d;color:#fff;font-size:13px;font-weight:500;transition:background .18s,transform .18s}.action{width:100%;margin-top:17px}.action:hover:not(:disabled),.flow-button:hover{background:#465f80}.action:disabled{opacity:.38}.flow-button>.flow-icon{width:16px;height:16px}.hint{font-size:11px;line-height:1.7;color:var(--muted);margin-top:14px}
.result-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:15px}.file-name{font-size:14px;font-weight:500;min-width:0;overflow-wrap:anywhere}.file-size{font-size:11px;color:var(--muted);white-space:nowrap}.id-row{display:grid;grid-template-columns:minmax(0,1fr) repeat(3,38px);gap:8px;padding:12px;border-radius:14px;background:#eaf0f7;align-items:center}.id-row code,.hex-row code{font-size:12px;color:#536b89;overflow-wrap:anywhere;user-select:text;line-height:1.7}.hex-row{display:grid;grid-template-columns:minmax(0,1fr) 38px;align-items:center;gap:12px;padding:12px;border-radius:13px;background:#eaf0f7}.icon-button{display:grid;place-items:center;width:38px;height:38px;flex-shrink:0;border:0;border-radius:10px;background:#ffffffc9;color:#6a809a}.icon-button:hover{color:#334e70;background:#fff}.icon-button svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.delete-button:hover{color:#b85f5f}.preview{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#eef2f7;margin-top:14px}.preview img,.preview video{display:block;width:100%;max-height:520px;object-fit:contain}.preview video{background:#111}.preview pre{padding:18px;margin:0;color:#40546e;white-space:pre-wrap;overflow-wrap:anywhere;max-height:420px;overflow:auto;font-size:13px;line-height:1.8}.toast{position:fixed;bottom:25px;right:25px;padding:13px 18px;border-radius:14px;background:#364e6df5;color:white;box-shadow:0 8px 30px #3b52762b;z-index:90;opacity:0;pointer-events:none;font-size:12px;transition:opacity .18s,transform .18s;transform:translateY(8px);max-width:calc(100vw - 36px)}.toast.show{opacity:1;pointer-events:auto;transform:none}.toast.error{background:#a45555}.flow-feedback{display:flex;align-items:center;gap:20px}.flow-feedback button{border:0;background:none;color:inherit;font-size:18px;padding:2px 4px}.flow-feedback[role=alert]{background:#a45555}
dialog{width:min(360px,calc(100% - 32px));padding:25px;border:1px solid #fff;border-radius:22px;background:#f2f6faf5;color:var(--text);box-shadow:0 30px 90px #263a5a30}dialog::backdrop{background:#31465f4a;backdrop-filter:blur(8px)}.delete-title{font-size:15px;margin-bottom:18px}.delete-error{font-size:12px;color:#b45a5a;margin-top:13px}.dialog-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}.dialog-actions button{min-height:42px;border:0;border-radius:11px;background:#e3eaf2;font-size:12px}.dialog-actions .confirm-delete{background:#a45959;color:white}.route-loading{min-height:55vh;display:grid;place-items:center}.route-loading::after{content:'';width:18px;height:18px;border:2px solid #c6d4e4;border-top-color:#6984a6;border-radius:50%;animation:flow-spin .8s linear infinite}.page-footer,.resource-footer,.vault-footer{display:none}
@keyframes flow-in{from{opacity:.65;transform:translateY(5px)}to{opacity:1;transform:none}}@keyframes flow-spin{to{transform:rotate(360deg)}}
@media(max-width:700px){.flow-nav{height:80px;width:calc(100% - 40px)}.flow-brand{font-size:23px}.flow-navigation>a,.flow-menu>summary{font-size:11px;padding:9px 16px;min-height:36px}.flow-menu-panel{width:440px;right:0;padding:12px;gap:8px;top:56px}.flow-menu-panel a{font-size:11px;gap:8px}.page-intro,.app{width:calc(100% - 40px)}.page-intro{margin:28px auto 24px;gap:16px}.page-intro h1{font-size:35px;letter-spacing:-1.2px}.page-intro p{font-size:12px}.panel,.app>.panel{padding:22px;border-radius:20px}.result{padding:18px}.flow-footer{width:calc(100% - 40px);margin-top:38px;padding-bottom:25px}.drop-zone,.drop{min-height:185px}.toast{right:18px;bottom:18px}.main-tab{height:43px;font-size:13px}.flow-menu-panel .flow-tool-icon{width:27px;height:27px}.flow-menu-panel a>.flow-icon{width:11px;height:11px}}
@media(max-width:390px){.flow-nav,.page-intro,.app,.flow-footer{width:calc(100% - 32px)}.flow-brand{font-size:21px}.flow-navigation>a,.flow-menu>summary{padding-inline:12px}.flow-menu-panel{grid-template-columns:1fr;width:270px;max-height:70vh;overflow:auto}.flow-menu-panel>div{display:grid;grid-template-columns:1fr}.page-intro h1{font-size:32px}.panel,.app>.panel{padding:18px}.id-row{grid-template-columns:repeat(3,1fr)}.id-row code{grid-column:1/-1;margin-bottom:5px}.id-row .icon-button{width:100%}.drop-zone span{font-size:12px}.file-size{font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}