.skip-link{z-index:200;background:var(--primary);color:#fff;border-radius:0 0 var(--radius-sm) var(--radius-sm);padding:8px 16px;font-size:14px;font-weight:500;text-decoration:none;position:absolute;top:-100%;left:16px}.skip-link:focus{top:0}:root{--primary:#3867d6;--primary-light:#3867d614;--primary-dark:#2548a0;--primary-gradient:linear-gradient(145deg, #3867d6, #1e4db8);--accent:#e88a10;--accent-light:#e88a1014;--accent-green:#059669;--accent-green-light:#05966914;--accent-purple:#6366f1;--accent-purple-light:#6366f114;--accent-rose:#e04060;--accent-rose-light:#e0406014;--text:#334155;--text-secondary:#475569;--text-light:#94a3b8;--bg:#fff;--bg-gray:#f8fafc;--bg-dark:#0f172a;--border:#3867d61a;--border-light:#e2e8f0;--shadow-sm:0 1px 3px #3867d60f;--shadow:0 4px 16px #3867d614, 0 1px 3px #0f172a08;--shadow-lg:0 8px 32px #3867d61a, 0 2px 6px #0f172a0a;--shadow-glow:0 0 0 1px #3867d61a, 0 4px 16px #3867d614;--shadow-glow-hover:0 0 0 1px #3867d626, 0 6px 24px #3867d61f;--radius-sm:6px;--radius:10px;--radius-lg:14px;--radius-xl:20px;--header-h:64px;--max-w:1200px;--font:"PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--fs-display:36px;--fs-h1:24px;--fs-h2:18px;--fs-body:15px;--fs-small:13px;--fs-caption:11px;--lh-heading:1.25;--lh-body:1.6;--lh-caption:1.5}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font);font-size:var(--fs-body);line-height:var(--lh-body);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}ul,ol{list-style:none}button,input,textarea,select{font:inherit}.text-caption{font-size:var(--fs-caption);line-height:var(--lh-caption);letter-spacing:.04em}.text-small{font-size:var(--fs-small);line-height:var(--lh-body)}.web-header{z-index:100;height:var(--header-h);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);background:#fffffff2;transition:box-shadow .3s;position:fixed;top:0;left:0;right:0}.web-header.scrolled{box-shadow:var(--shadow-sm)}.web-header__inner{max-width:var(--max-w);justify-content:space-between;align-items:center;height:100%;margin:0 auto;padding:0 24px;display:flex}.web-logo{--logo-size:40px;color:var(--primary);cursor:pointer;align-items:center;gap:10px;font-size:20px;font-weight:700;display:flex}.web-logo__icon{width:var(--logo-size);height:var(--logo-size);object-fit:contain;border-radius:10px;flex-shrink:0;display:block;box-shadow:0 8px 20px #2d7ff92e}.web-logo__text{height:var(--logo-size);min-width:var(--logo-size);flex-direction:column;justify-content:space-between;align-items:stretch;display:flex}.web-logo__title{color:var(--primary);font-size:20px;font-weight:700;line-height:1}.web-logo__subtitle{letter-spacing:.03em;color:var(--primary);font-size:12px;font-weight:700;line-height:1}.web-logo__line{white-space:nowrap;justify-content:space-between;align-items:center;width:100%;display:flex}.web-nav{align-items:center;gap:32px;display:flex}.web-nav a{color:var(--text-secondary);font-size:15px;transition:color .2s;position:relative}.web-nav a:hover,.web-nav a.active{color:var(--primary)}.web-nav a.active:after{content:"";background:var(--primary);border-radius:1px;height:2px;position:absolute;bottom:-4px;left:0;right:0}.nav-install-btn{cursor:pointer;background:#2563eb0a;border:1px solid #2563eb4d;border-radius:100px;align-items:center;gap:5px;padding:5px 14px;font-size:14px;transition:background .2s,border-color .2s;display:flex;color:var(--primary)!important}.nav-install-btn:hover{border-color:var(--primary);background:#2563eb1f}.nav-install-btn .el-icon{font-size:14px}.web-header__actions{align-items:center;gap:12px;display:flex}.web-footer{color:#94a3b8;background:#0f172a;padding:60px 24px 30px}.web-footer__inner{max-width:var(--max-w);grid-template-columns:1.5fr repeat(3,1fr);gap:40px;margin:0 auto;display:grid}.web-footer h4{color:#fff;margin-bottom:16px;font-size:16px}.web-footer p,.web-footer a{font-size:14px;line-height:2}.web-footer a:hover{color:#fff}.web-footer__brand p{margin-top:12px;line-height:1.8}.web-footer__bottom{max-width:var(--max-w);text-align:center;border-top:1px solid #ffffff1a;margin:40px auto 0;padding-top:20px;font-size:13px}.hero{text-align:center;background:linear-gradient(175deg, var(--primary-light) 0%, var(--bg) 60%);padding:140px 24px 80px}.hero__inner{max-width:800px;margin:0 auto}.hero h1{letter-spacing:-.5px;margin-bottom:20px;font-size:44px;font-weight:700;line-height:1.25}.hero h1 em{color:var(--primary);font-style:normal}.hero__subtitle{color:var(--text-secondary);margin-bottom:12px;font-size:17px}.hero__checks{flex-wrap:wrap;justify-content:center;gap:12px 28px;margin:24px 0 36px;display:flex}.hero__checks li{color:var(--text-secondary);align-items:center;gap:6px;font-size:15px;display:flex}.hero__checks li .check-icon{color:var(--primary);font-weight:700}.hero__actions{justify-content:center;gap:16px;margin-bottom:50px;display:flex}.hero__demo-img{border-radius:var(--radius-lg);max-width:860px;box-shadow:var(--shadow-lg);background:var(--bg-gray);min-height:300px;color:var(--text-light);border:1px solid var(--border);justify-content:center;align-items:center;margin:0 auto;font-size:14px;display:flex;overflow:hidden}.hero__demo-img img{width:100%;height:auto}.section{padding:80px 24px}.section--gray{background:var(--bg-gray)}.section__inner{max-width:var(--max-w);margin:0 auto}.section__header{text-align:center;margin-bottom:48px}.section__header h2{margin-bottom:12px;font-size:32px;font-weight:700}.section__header p{color:var(--text-secondary);max-width:600px;margin:0 auto;font-size:16px}.feature-row{grid-template-columns:1fr 1fr;align-items:center;gap:60px;margin-bottom:80px;display:grid}.feature-row:last-child{margin-bottom:0}.feature-row--reverse .feature-row__img{order:-1}.feature-row__text h2{margin-bottom:14px;font-size:28px;font-weight:700}.feature-row__text p{color:var(--text-secondary);margin-bottom:20px;line-height:1.8}.feature-row__tags{flex-wrap:wrap;gap:10px;margin-bottom:20px;display:flex}.feature-row__img{border-radius:var(--radius-lg);background:var(--bg-gray);border:1px solid var(--border);min-height:280px;color:var(--text-light);justify-content:center;align-items:center;font-size:14px;display:flex;overflow:hidden}.feature-row__img img{width:100%;height:auto}.card-grid{grid-template-columns:repeat(3,1fr);gap:24px;display:grid}.card-grid--2{grid-template-columns:repeat(2,1fr)}.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;transition:box-shadow .3s,transform .3s}.card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}.card__icon{border-radius:12px;place-items:center;width:48px;height:48px;margin-bottom:16px;font-size:22px;display:grid}.card__icon--blue{background:var(--primary-light);color:var(--primary)}.card__icon--orange{background:var(--accent-light);color:#d97706}.card__icon--green{color:#38a169;background:#f0fff4}.card__icon--purple{color:#805ad5;background:#faf5ff}.card h3{margin-bottom:8px;font-size:18px;font-weight:600}.card p{color:var(--text-secondary);font-size:14px;line-height:1.7}.stats-bar{text-align:center;grid-template-columns:repeat(4,1fr);gap:24px;padding:40px 0;display:grid}.stats-bar__item strong{color:var(--primary);margin-bottom:4px;font-size:36px;display:block}.stats-bar__item span{color:var(--text-secondary);font-size:14px}.security-grid{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.security-item{border-radius:var(--radius);border:1px solid var(--border);background:var(--bg);align-items:flex-start;gap:14px;padding:20px;display:flex}.security-item .el-icon{color:var(--primary);flex-shrink:0;margin-top:2px;font-size:24px}.security-item h4{margin-bottom:4px;font-size:15px;font-weight:600}.security-item p{color:var(--text-secondary);font-size:13px}.cta{text-align:center;background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;padding:80px 24px}.cta h2{margin-bottom:14px;font-size:32px;font-weight:700}.cta p{opacity:.85;margin-bottom:28px;font-size:16px}.article-banner{text-align:center;background:linear-gradient(175deg, var(--primary-light) 0%, var(--bg) 100%);padding:120px 24px 50px}.article-banner h1{font-size:36px;font-weight:700}.article-banner p{color:var(--text-secondary);margin-top:10px;font-size:16px}.article-body{max-width:900px;margin:0 auto;padding:48px 24px 80px}.article-body h2{border-bottom:2px solid var(--primary-light);margin:40px 0 14px;padding-bottom:10px;font-size:24px;font-weight:700}.article-body h2:first-child{margin-top:0}.article-body p{color:var(--text-secondary);margin-bottom:16px;line-height:1.9}.article-body .img-placeholder{border-radius:var(--radius-lg);background:var(--bg-gray);border:1px solid var(--border);width:100%;min-height:240px;color:var(--text-light);justify-content:center;align-items:center;margin:24px 0;font-size:14px;display:flex}.article-body .img-placeholder img{width:100%;height:auto}.article-body ul{margin-bottom:16px;padding-left:0}.article-body ul li{color:var(--text-secondary);padding:6px 0 6px 20px;position:relative}.article-body ul li:before{content:"✓";color:var(--primary);font-weight:700;position:absolute;left:0}.related-links{border-top:1px solid var(--border);flex-wrap:wrap;gap:12px;margin-top:40px;padding-top:24px;display:flex}.login-inline-field{grid-template-columns:minmax(0,1fr) 144px;gap:12px;width:100%;display:grid}.login-inline-field__button{width:100%}.login-preview{margin-bottom:22px}.wechat-login-panel{flex-direction:column;gap:18px;display:flex}.wechat-login-panel__qr-wrap{background:#fff;border:1px solid #12355b1f;border-radius:24px;justify-content:center;align-self:center;align-items:center;width:260px;height:260px;padding:12px;display:flex;box-shadow:inset 0 0 0 1px #94a3b81f}.wechat-login-panel__qr{object-fit:contain;border-radius:16px;width:100%;height:100%}.wechat-login-panel__placeholder{color:var(--text-light);font-size:14px}.wechat-login-panel__meta{color:var(--text-secondary);justify-content:flex-start;align-items:center;gap:8px;font-size:13px;display:flex}.wechat-login-panel__steps{color:var(--text-secondary);margin:0;padding-left:18px;line-height:1.8}.wechat-login-panel__form{background:linear-gradient(#ecfdf5cc,#ffffffeb);border:1px solid #10b98129;border-radius:20px;padding:18px}.wechat-login-panel__form-title{color:#0f766e;align-items:center;gap:8px;margin-bottom:16px;font-weight:700;display:flex}.wechat-login-panel__hint{color:var(--text-light);word-break:break-all;margin:0;font-size:12px}.scan-page{background:radial-gradient(circle at 100% 0,#3867d61a,#0000 28%),radial-gradient(circle at 0 100%,#06b6d414,#0000 32%),linear-gradient(#f0f4ff 0%,#f8fafc 100%);justify-content:center;align-items:center;min-height:100dvh;padding:24px 16px;display:flex}.scan-card{background:#fffffff5;border-radius:28px;width:460px;max-width:100%;padding:36px 32px;box-shadow:0 24px 64px #0f172a24}.scan-card__header{text-align:center;margin-bottom:24px}.scan-card__header h1{margin-top:14px;font-size:24px}.scan-card__header p{color:var(--text-secondary);margin-top:8px}.scan-card__alert{margin-bottom:20px}.admin-layout{flex-direction:column;min-height:100dvh;display:flex}.admin-header{height:var(--header-h);box-shadow:none;z-index:20;background:#fff;border-bottom:1px solid #3867d60f;flex-shrink:0;justify-content:space-between;align-items:center;padding:0 24px;display:flex;position:relative}.admin-header__left{align-items:center;gap:12px;display:flex}.admin-brand{color:var(--text);letter-spacing:-.2px;align-items:center;gap:10px;font-size:15px;font-weight:700;text-decoration:none;display:flex}.admin-brand__logo{border-radius:8px;flex-shrink:0;width:32px;height:32px;display:block}.admin-header__divider{background:#3867d61f;flex-shrink:0;width:1px;height:20px}.admin-header__context{color:var(--text-light);font-size:13px;font-weight:400}.admin-header__right{align-items:center;gap:6px;display:flex}.admin-header__right .el-button+.el-button{margin-left:0}.admin-header__right .el-button.is-text{color:var(--text-secondary);border-radius:6px;padding:6px 12px;font-size:13px;font-weight:400;transition:color .15s}.admin-header__right .el-button.is-text:not(.is-disabled):hover{color:var(--primary);background-color:#0000}.admin-header__right .el-tag{font-weight:400}.admin-header__right .el-tag .el-tag__content{align-items:center;display:inline-flex}.admin-header__sep{background:var(--border);flex-shrink:0;width:1px;height:22px;margin:0 10px}.admin-header__icon-btn{justify-content:center;align-items:center;width:36px;height:36px;display:inline-flex;padding:0!important}.admin-header__user{cursor:pointer;border:1px solid #0000;border-radius:10px;align-items:center;gap:6px;margin-left:10px;padding:4px 10px 4px 4px;transition:background .15s,border-color .15s;display:flex}.admin-header__user:hover{background:#3867d608;border-color:#3867d61a}.admin-header__user-name{color:var(--text);font-size:13px;font-weight:500}.admin-header__user-arrow{color:var(--text-light);flex-shrink:0;margin-left:-2px;font-size:13px;transition:transform .15s}.admin-header__user:hover .admin-header__user-arrow{color:var(--primary)}.admin-header__avatar{flex-shrink:0}.admin-body{flex:1;display:flex;overflow:hidden}.admin-sidebar{width:200px;color:var(--text);background:#fafbff;border-right:1px solid #3867d60f;flex-shrink:0;padding:16px 10px;overflow-y:auto}.admin-sidebar .el-menu{background:0 0;border-right:none}.admin-sidebar .el-menu-item{height:42px;color:var(--text-secondary);border-radius:8px;margin:0 0 2px;font-size:14px;font-weight:500;transition:background .15s,color .15s}.admin-sidebar .el-menu-item:hover{color:var(--text);background:#3867d60a}.admin-sidebar .el-menu-item.is-active{color:var(--primary);background:#3867d614;font-weight:600}.admin-content{background:linear-gradient(#f0f4ff 0%,#fafbff 50%,#f8fafc 100%);flex:1;padding:28px;overflow-y:auto}.admin-content .el-card{border-radius:var(--radius)}.admin-content__title{color:var(--text);border-bottom:none;align-items:center;gap:10px;margin-bottom:24px;padding-bottom:0;font-size:22px;font-weight:800;display:flex}.admin-content__title:before{content:"";background:linear-gradient(#3867d6,#2548a0);border-radius:2px;flex-shrink:0;width:4px;height:22px;display:inline-block}.admin-placeholder{border-radius:var(--radius-lg);border:1px solid var(--border);text-align:center;color:var(--text-secondary);background:#fff;padding:60px}.admin-placeholder .el-icon{color:var(--text-light);margin-bottom:16px;font-size:48px}.admin-placeholder h3{color:var(--text);margin-bottom:8px;font-size:18px}@media (width<=900px){.hero h1{font-size:30px}.feature-row{grid-template-columns:1fr;gap:30px}.feature-row--reverse .feature-row__img{order:0}.card-grid,.card-grid--2,.security-grid{grid-template-columns:1fr}.stats-bar{grid-template-columns:repeat(2,1fr)}.web-footer__inner{grid-template-columns:1fr 1fr}.web-nav{display:none}}@media (width<=600px){.hero{padding:110px 16px 50px}.section{padding:50px 16px}.hero__actions{flex-direction:column;align-items:center}.stats-bar,.web-footer__inner,.login-inline-field{grid-template-columns:1fr}.wechat-login-panel__meta{flex-direction:column;align-items:flex-start}.scan-card{border-radius:22px;padding:28px 20px}}.el-picker-panel__footer .el-button.is-text{display:none}html.dark{--bg:#0f172a;--bg-gray:#020617;--text:#e2e8f0;--text-secondary:#94a3b8;--text-light:#64748b;--border:#3867d626;--border-light:#334155;--primary-light:#3867d61f;--accent-light:#e88a101a;--el-color-primary-light-3:#4f7de0;--el-color-primary-light-5:#2548a0;--el-color-primary-light-7:#1e3a6a;--el-color-primary-light-9:#1e293b;--el-fill-color-blank:#0f172a;--el-bg-color:#020617;--el-bg-color-overlay:#1e293b;--el-border-color:#334155;--el-border-color-light:#1e293b;--el-border-color-lighter:#1a2332;--el-fill-color-light:#3867d614;--el-fill-color-lighter:#3867d60a;--el-text-color-primary:#e2e8f0;--el-text-color-regular:#cbd5e1;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}:root{--el-color-primary:#3867d6;--el-color-primary-light-3:#7097e6;--el-color-primary-light-5:#a3bbf0;--el-color-primary-light-7:#cbd8f7;--el-color-primary-light-8:#dfe7fa;--el-color-primary-light-9:#eff3fd;--el-color-primary-dark-2:#2548a0;--el-color-success:#059669;--el-color-warning:#e88a10;--el-color-danger:#e04060;--el-color-info:#64748b;--el-border-radius-base:var(--radius-sm);--el-border-radius-small:4px;--el-border-radius-round:20px;--el-box-shadow-light:var(--shadow);--el-box-shadow-lighter:var(--shadow-sm);--el-box-shadow:var(--shadow-lg);--el-border-color:var(--border-light);--el-border-color-light:#3867d60f;--el-border-color-lighter:#3867d60a;--el-fill-color-light:#3867d60a;--el-fill-color-lighter:#3867d605}.el-button--primary{transition:transform .2s,box-shadow .2s}.el-button.btn--two-char>span{letter-spacing:.35em;padding-left:.35em}.el-button--primary.btn-glow,.btn-primary-glow .el-button--primary{background:var(--primary-gradient)!important;border:none!important;box-shadow:0 2px 8px #3867d647!important}.el-button--primary.btn-glow:hover,.btn-primary-glow .el-button--primary:hover{transform:translateY(-1px);box-shadow:0 4px 16px #3867d661!important}.el-tag--primary{--el-tag-bg-color:#3867d614;--el-tag-border-color:#3867d626;--el-tag-text-color:#3867d6}.el-tag--success{--el-tag-bg-color:#10b98114;--el-tag-border-color:#10b98126;--el-tag-text-color:#059669}.el-tag--warning{--el-tag-bg-color:#f59e0b14;--el-tag-border-color:#f59e0b26;--el-tag-text-color:#d97706}.el-tag--danger{--el-tag-bg-color:#f43f5e14;--el-tag-border-color:#f43f5e26;--el-tag-text-color:#e11d48}.el-tag,.el-badge__content{letter-spacing:.03em}small,.text-caption{letter-spacing:.04em}.admin-header__right .el-badge__content.is-fixed{right:0!important;transform:translateY(-50%)!important}html.dark .admin-header{background:#0f172a;border-color:#3867d61f}html.dark .admin-sidebar{color:#e2e8f0;background:#0f172a;border-color:#3867d61f}html.dark .admin-sidebar .el-menu-item{color:#94a3b8}html.dark .admin-sidebar .el-menu-item:hover{color:#e2e8f0;background:#ffffff0f}html.dark .admin-sidebar .el-menu-item.is-active{color:#e2e8f0;background:#3867d626}html.dark .admin-content{background:#0f172a}html.dark .admin-content__title{color:#e2e8f0}html.dark .admin-placeholder{background:#1e293b;border-color:#334155}html{transition:background-color .3s}.admin-header,.admin-content,.admin-sidebar,.admin-placeholder,.el-card,.el-menu,.el-table{transition:background-color .3s,color .2s,border-color .3s}html.dark .x-spreadsheet{filter:invert(.9)hue-rotate(180deg)}.el-page-header__icon{margin-right:4px!important}.el-page-header__left{margin-right:18px!important}.el-page-header__left .el-divider--vertical{margin:0 8px!important}html.dark .el-alert--info{--el-alert-bg-color:#1e293b;background-color:#1e293b}