:root{
  --blue:#1677ff;
  --blue-dark:#0c63db;
  --navy:#17396d;
  --text:#26354a;
  --muted:#8895a7;
  --line:#e9edf2;
  --soft:#f7f9fc;
  --shadow:0 14px 45px rgba(27,48,78,.08);
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;color:var(--text)}
button,input{font:inherit}
button{cursor:pointer}
.hidden{display:none!important}
.mono{font-family:Consolas,"SFMono-Regular",monospace}
.app-page,.login-page{min-height:100vh;background:radial-gradient(circle at 91% 8%,rgba(217,236,255,.96),transparent 31%),radial-gradient(circle at 7% 94%,rgba(255,232,211,.76),transparent 31%),#fff}
.page-wrap{width:min(1020px,calc(100% - 36px));margin:0 auto;padding:48px 0 40px}
.brand-center{text-align:center}
.logo-mark{width:64px;height:64px;margin:0 auto;border-radius:15px;display:grid;place-items:center;background:linear-gradient(145deg,#2e8cff,#176bf0);box-shadow:0 10px 22px rgba(22,105,230,.24);color:#fff;font-weight:900;font-size:23px;letter-spacing:-1px}
.brand-center h1{font-size:29px;line-height:1.1;margin:22px 0 0;color:#183c7a;font-weight:800;letter-spacing:-.4px}
.brand-center>p{margin:10px 0 0;color:#9aa4b2;font-size:13px}
.app-brand{margin-bottom:39px}
.socket-state{margin:11px auto 0;display:inline-flex;align-items:center;gap:6px;color:#9aa5b5;font-size:11px}
.socket-state i{width:6px;height:6px;border-radius:50%;background:#efad45}
.socket-state.connected i{background:#31b97a}
.socket-state.disconnected i,.socket-state.error i{background:#ee5964}
.sync-banner{padding:10px 14px;margin:-20px 0 15px;background:#fff8df;border:1px solid #f0dda6;color:#8d6918;border-radius:9px;font-size:12px;text-align:center}
.main-card,.records-card,.features-card{background:rgba(255,255,255,.93);border:1px solid rgba(232,237,244,.95);border-radius:19px;box-shadow:var(--shadow);backdrop-filter:blur(5px)}
.main-card{padding:28px 31px 32px}
.account-row{min-height:54px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.card-key-box{display:flex;align-items:center;gap:12px;min-width:0}
.round-icon{width:31px;height:31px;border-radius:50%;display:grid;place-items:center;background:#eef5ff;color:#1f579c;font-size:17px}
.card-key-text{min-width:0}
.card-key-text>span{display:block;color:#7f8b9c;font-size:12px;margin-bottom:5px}
.card-key-text>div{display:flex;align-items:center;gap:8px}
.card-key-text strong{font-size:13px;color:#526075;font-weight:500;max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon-btn{border:0;background:transparent;color:#7d8794;padding:2px 4px;border-radius:5px}
.icon-btn:hover{background:#f1f5fa;color:var(--blue)}
.account-row-actions{display:flex;align-items:center;gap:22px;white-space:nowrap}
.remaining-badge{background:#eaf4ff;color:#1976dc;border-radius:6px;padding:5px 9px;font-size:12px}
.remaining-badge b{font-weight:800}
.plain-btn{border:0;background:transparent;color:#3a414b;padding:6px 2px;font-size:12px}
.plain-btn:hover{color:var(--blue)}
.plain-btn.small{font-size:12px}
.divider{height:1px;background:#edf0f4;margin:7px 0 21px}
.instruction-box{border:1px solid #cfe3ff;background:linear-gradient(180deg,#f5faff,#f9fbff);border-radius:13px;padding:14px 17px 13px;color:#6d7d92}
.instruction-title{color:#244a81;font-size:13px;font-weight:800;margin-bottom:7px}
.instruction-title span{margin-right:6px}
.instruction-box ul{margin:0;padding-left:19px;font-size:12px;line-height:1.9}
.form-section{margin-top:20px}
.field-label{display:block;font-weight:700;color:#263c5e;font-size:13px;margin-bottom:9px}
.text-input{width:100%;height:42px;border:1px solid #d9dee6;border-radius:8px;padding:0 12px;color:#2f3f56;background:#fff;outline:none;transition:.18s}
.text-input::placeholder{color:#b7bec8}
.text-input:focus{border-color:#79aff4;box-shadow:0 0 0 3px rgba(42,132,242,.08)}
.file-row{min-height:51px;border:1px solid #e4e8ee;border-radius:10px;background:#fbfcfd;padding:7px;display:flex;align-items:center;gap:10px;transition:.18s}
.file-row:focus-within{border-color:#bdd8fb;background:#fff}
.hidden-file{display:none}
.choose-file-btn{height:35px;padding:0 15px;border:1px solid #d8dde5;border-radius:8px;background:#fff;color:#313a45}
.choose-file-btn:hover{border-color:#88b7f4;color:var(--blue)}
.format-pill{border:1px solid #e0e5eb;border-radius:999px;background:#fff;color:#98a3b2;font-size:11px;padding:6px 10px;white-space:nowrap}
.file-name{min-width:0;flex:1;text-align:right;color:#a1a8b1;font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.submit-main{height:35px;min-width:126px;border:0;border-radius:7px;background:var(--blue);color:#fff;font-size:12px;font-weight:700;box-shadow:0 5px 12px rgba(22,119,255,.16)}
.submit-main:disabled{background:#f0f1f3;color:#b5bbc4;border:1px solid #d8dce1;box-shadow:none;cursor:not-allowed}
.submit-main:not(:disabled):hover{background:var(--blue-dark)}
.records-card{margin-top:27px;padding:26px 27px 27px}
.section-title-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}
.section-title-row h2{font-size:16px;margin:0;color:#1d3b70}
.title-icon{font-size:20px;vertical-align:-2px;margin-right:6px}
.table-wrap{overflow:auto;border-radius:9px;border:1px solid #f0f2f5}
.records-table{border-collapse:collapse;width:100%;min-width:890px;background:#fff}
.records-table th,.records-table td{padding:13px 12px;border-bottom:1px solid #eef1f4;text-align:left;font-size:11px;color:#333;vertical-align:middle}
.records-table th{font-weight:700;color:#222;background:#fcfcfd;white-space:nowrap}
.records-table tbody tr:last-child td{border-bottom:0}
.records-table tbody tr:hover{background:#fbfdff}
.filename{max-width:170px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.empty{text-align:center!important;color:#c0c5cc!important;padding:33px!important}
.pill{display:inline-block;border-radius:5px;padding:3px 7px;font-size:10px;font-weight:700;white-space:nowrap}
.pill.good{background:#edf9e9;color:#5aa343}
.pill.warn{background:#fff6db;color:#b17e19}
.pill.bad{background:#fff0f0;color:#ef5a61}
.reason{color:#d85c62;font-size:10px;margin-top:4px;max-width:160px}
.report-links{display:flex;gap:8px;white-space:nowrap}
.link-btn,.delete-btn{border:0;background:transparent;padding:0;font-size:11px}
.link-btn{color:#1677ff}
.delete-btn{color:#ef5a61}
.muted{color:#b8bec7}
.features-card{margin-top:27px;padding:29px 34px 31px;text-align:center}
.features-card h2{font-size:17px;color:#1d3b70;margin:0 0 23px}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px}
.features-grid article{min-width:0}
.feature-bubble{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;margin:0 auto 11px;font-size:20px}
.feature-bubble.blue{background:#eef6ff}
.feature-bubble.green{background:#eefbf1}
.feature-bubble.purple{background:#faf3ff}
.features-grid h3{font-size:12px;margin:0 0 8px;color:#23426f}
.features-grid p{font-size:11px;color:#8e99a9;margin:0;line-height:1.7}
.footer-note{text-align:center;color:#b1b8c2;font-size:10px;margin-top:22px}
.toast{position:fixed;z-index:100;top:20px;left:50%;transform:translate(-50%,-8px);opacity:0;pointer-events:none;transition:.2s;background:#222;color:#fff;padding:10px 15px;border-radius:7px;font-size:12px;box-shadow:0 8px 25px rgba(0,0,0,.16)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.error{background:#cf4650}
.login-page{display:grid;place-items:center;padding:30px}
.login-shell{width:410px;max-width:100%}
.login-shell .brand-center{margin-bottom:28px}
.login-card{background:#fff;border:1px solid #edf0f4;border-radius:16px;padding:29px 30px;box-shadow:0 16px 45px rgba(28,49,78,.09)}
.login-card h2{font-size:18px;color:#1d3b70;margin:0 0 6px}
.login-card .sub{font-size:12px;color:#9aa4b2;margin:0 0 22px}
.login-card>label:not(.remember){display:block;font-size:12px;font-weight:700;color:#34445c;margin:11px 0 7px}
.login-card>input{width:100%;height:42px;border:1px solid #dce1e8;border-radius:8px;padding:0 11px;outline:none}
.login-card>input:focus{border-color:#79aff4;box-shadow:0 0 0 3px rgba(42,132,242,.08)}
.remember{display:flex;align-items:center;gap:6px;font-size:11px;color:#7d8795;margin:12px 0 2px}
.form-error{min-height:19px;color:#ef5961;font-size:11px;margin:5px 0}
.primary{border:0;border-radius:8px;background:var(--blue);color:#fff;font-weight:700}
.wide{width:100%;height:42px}
@media(max-width:760px){
  .page-wrap{width:min(100% - 22px,1020px);padding-top:30px}
  .app-brand{margin-bottom:28px}
  .brand-center h1{font-size:25px}
  .main-card,.records-card,.features-card{border-radius:15px}
  .main-card{padding:22px 18px 24px}
  .account-row{align-items:flex-start;flex-direction:column}
  .account-row-actions{width:100%;justify-content:flex-start;gap:15px}
  .card-key-text strong{max-width:240px}
  .file-row{align-items:stretch;flex-wrap:wrap}
  .file-name{order:3;width:100%;flex-basis:100%;text-align:left;padding:2px 4px}
  .submit-main{margin-left:auto}
  .records-card{padding:21px 17px 20px}
  .features-grid{grid-template-columns:1fr;gap:24px}
}

/* v5: 贴近参考页的最终细节 */
.app-page{background:radial-gradient(circle at 91% 5%,rgba(223,239,255,.98),transparent 30%),radial-gradient(circle at 6% 96%,rgba(255,232,212,.82),transparent 29%),#fff}
.page-wrap{width:min(1015px,calc(100% - 36px));padding-top:50px}
.app-brand{margin-bottom:36px}
.app-brand .logo-mark{width:66px;height:66px;border-radius:15px;font-size:24px}
.app-brand h1{margin-top:21px;font-size:28px}
.socket-state.connected{visibility:hidden}
.main-card{padding:29px 31px 31px}
.records-card{padding:25px 27px 27px}
.records-table th{height:43px}
.records-table td{height:46px}
.features-card{padding-top:30px;padding-bottom:32px}
@media(max-width:760px){.socket-state.connected{display:none}.page-wrap{padding-top:28px}}


/* ready5: 客户端可用次数、文件名可视性、纯文字品牌 */
.brand-text-only h1{margin:0;color:#173b70;font-size:44px;line-height:1.05;font-weight:800;letter-spacing:.2px;text-align:center}
.login-shell .brand-text-only{margin-bottom:34px}
.app-brand.brand-text-only{margin-bottom:34px}
.app-brand.brand-text-only h1{font-size:42px}
.file-row{justify-content:flex-start}
.file-name{flex:1 1 220px;min-width:180px;text-align:left;color:#e53935;font-size:13px;font-weight:700;padding:0 4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.format-pill{flex:0 0 auto}
.submit-main{flex:0 0 auto;margin-left:0}
@media(max-width:760px){
  .brand-text-only h1,.app-brand.brand-text-only h1{font-size:34px}
  .file-name{order:2;flex-basis:100%;width:100%;min-width:0;padding:5px 4px 2px}
  .format-pill{order:3}
  .submit-main{order:4;margin-left:auto}
}

/* ready6: 已选文件名必须醒目、红色、居左，绝不挤到提交按钮旁边 */
.file-row .choose-file-btn{order:1;flex:0 0 auto}
.file-row .file-name{order:2;flex:1 1 260px;min-width:220px;text-align:left!important;color:#e53935!important;font-size:14px!important;font-weight:800!important;padding:0 6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-row .format-pill{order:3;flex:0 0 auto}
.file-row .submit-main{order:4;flex:0 0 auto;margin-left:auto}
.file-row:not(.has-file) .file-name{color:#9aa4b2!important;font-weight:500!important;font-size:12px!important}
@media(max-width:760px){
  .file-row .file-name{order:2;flex-basis:100%;width:100%;min-width:0;padding:7px 4px 2px}
  .file-row .format-pill{order:3}
  .file-row .submit-main{order:4;margin-left:auto}
}