:root{--rmb-primary:#fb3c59;--rmb-primary-hover:#e02e4a;--rmb-primary-light:rgba(251, 60, 89, 0.1);--rmb-text:#363636;--rmb-text-light:#666666;--rmb-text-muted:#999999;--rmb-background:#ffffff;--rmb-background-alt:#f9f9f9;--rmb-border:#e5e5e5;--rmb-border-dark:#dddedf;--rmb-success:#28a745;--rmb-error:#dc3545;--rmb-warning:#ffc107;--rmb-shadow:0 2px 8px rgba(0, 0, 0, 0.08);--rmb-shadow-lg:0 8px 24px rgba(0, 0, 0, 0.12);--rmb-radius:4.5px;--rmb-radius-lg:8px;--rmb-font:-apple-system, "system-ui", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--rmb-transition:all 0.2s ease}.rmb-container{max-width:900px;margin:0 auto;padding:30px;font-family:var(--rmb-font);color:var(--rmb-text);line-height:1.6}.rmb-help-box{background:linear-gradient(135deg,#f8f9fa 0%,#e9ecef 100%);border:1px solid var(--rmb-border);border-radius:var(--rmb-radius-lg);padding:20px;margin-bottom:20px}.rmb-help-box h4{margin:0 0 12px 0;font-size:16px;font-weight:700;color:var(--rmb-text)}.rmb-help-content{display:flex;flex-direction:column;gap:10px}.rmb-help-item{font-size:14px;line-height:1.6;color:var(--rmb-text-light)}.rmb-help-item strong{color:var(--rmb-text)}.rmb-help-item code{background:#fff;border:1px solid var(--rmb-border);padding:2px 8px;border-radius:4px;font-size:12px;color:var(--rmb-primary)}.rmb-help-note{margin-top:12px;padding:10px 14px;background:rgb(255 193 7 / .1);border:1px solid rgb(255 193 7 / .3);border-radius:var(--rmb-radius);font-size:13px;color:#856404}.rmb-tabs-wrapper{display:flex;gap:12px;margin-bottom:20px}.rmb-tab-btn{flex:1;padding:14px 24px;font-family:var(--rmb-font);font-size:15px;font-weight:600;color:var(--rmb-text-light);background:#fff;border:2px solid var(--rmb-border);border-radius:var(--rmb-radius-lg);cursor:pointer;transition:var(--rmb-transition)}.rmb-tab-btn:hover{color:var(--rmb-primary);border-color:var(--rmb-primary);background:var(--rmb-primary-light)}.rmb-tab-btn.rmb-tab-btn-active{color:#fff;background:var(--rmb-primary);border-color:var(--rmb-primary);box-shadow:0 4px 12px rgb(251 60 89 / .3)}.rmb-tab-content{display:none}.rmb-tab-content.rmb-tab-active{display:block}.rmb-oauth-result{margin-top:20px}.rmb-oauth-success{background:rgb(40 167 69 / .08);border:1px solid rgb(40 167 69 / .2);border-radius:var(--rmb-radius-lg);padding:20px}.rmb-oauth-success h4{margin:0 0 16px 0;font-size:16px;color:var(--rmb-success)}.rmb-oauth-field{margin-bottom:12px}.rmb-oauth-field label{display:block;font-size:13px;font-weight:600;color:var(--rmb-text);margin-bottom:6px}.rmb-oauth-copy-wrapper{display:flex;gap:8px}.rmb-oauth-copy-wrapper input{flex:1;padding:10px 14px;font-family:monospace;font-size:12px;border:1px solid var(--rmb-border);border-radius:var(--rmb-radius);background:var(--rmb-background);color:var(--rmb-text)}.rmb-copy-btn{padding:10px 16px;font-size:13px;font-weight:600;color:#fff;background:var(--rmb-primary);border:none;border-radius:var(--rmb-radius);cursor:pointer;transition:var(--rmb-transition);white-space:nowrap}.rmb-copy-btn:hover{background:var(--rmb-primary-hover)}.rmb-oauth-hint{font-size:13px;color:var(--rmb-text-light);background:var(--rmb-background);padding:10px 14px;border-radius:var(--rmb-radius);margin-top:12px}.rmb-button-secondary{background:#6c757d;color:#fff}.rmb-button-secondary:hover{background:#5a6268;transform:translateY(-1px);box-shadow:0 4px 12px rgb(108 117 125 / .25)}.rmb-header{margin-bottom:24px;text-align:center}.rmb-title{font-size:28px;font-weight:700;color:var(--rmb-text);margin:0 0 8px 0}.rmb-input-section{background:var(--rmb-background);border:1px solid var(--rmb-border);border-radius:var(--rmb-radius-lg);padding:24px;margin-bottom:24px;box-shadow:var(--rmb-shadow)}.rmb-options{display:flex;gap:20px;margin-bottom:16px}.rmb-checkbox-label{display:inline-flex;align-items:center;gap:8px;cursor:pointer;font-size:14px;color:var(--rmb-text);user-select:none}.rmb-checkbox-label input[type="checkbox"]{width:18px;height:18px;accent-color:var(--rmb-primary);cursor:pointer}.rmb-checkbox-label span{font-weight:500}.rmb-input-wrapper{margin-bottom:16px}.rmb-textarea{width:100%;min-height:100px;padding:14px 16px;font-family:var(--rmb-font);font-size:14px;line-height:1.5;color:var(--rmb-text);background:var(--rmb-background);border:1px solid var(--rmb-border);border-radius:var(--rmb-radius);resize:vertical;transition:var(--rmb-transition);box-sizing:border-box}.rmb-textarea:focus{outline:none;border-color:var(--rmb-primary);box-shadow:0 0 0 3px var(--rmb-primary-light)}.rmb-textarea::placeholder{color:var(--rmb-text-muted)}.rmb-input-hint{font-size:13px;color:var(--rmb-text-light);margin-top:8px}.rmb-input-hint code{background:var(--rmb-background-alt);padding:2px 6px;border-radius:3px;font-size:12px;color:var(--rmb-primary)}.rmb-button-wrapper{display:flex;justify-content:flex-end}.rmb-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;font-family:var(--rmb-font);font-size:15px;font-weight:600;border:none;border-radius:var(--rmb-radius);cursor:pointer;transition:var(--rmb-transition);text-decoration:none}.rmb-button-primary{background:var(--rmb-primary);color:#fff}.rmb-button-primary:hover{background:var(--rmb-primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px rgb(251 60 89 / .25)}.rmb-button-primary:active{transform:translateY(0)}.rmb-button-primary:disabled{background:#ccc;cursor:not-allowed;transform:none;box-shadow:none}.rmb-button-outline{background:#fff0;color:var(--rmb-primary);border:2px solid var(--rmb-primary)}.rmb-button-outline:hover{background:var(--rmb-primary-light)}.rmb-btn-loading{display:inline-flex;align-items:center;gap:8px}.rmb-spinner{width:18px;height:18px;animation:rmb-spin 1s linear infinite}@keyframes rmb-spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}.rmb-result-section{background:var(--rmb-background);border:1px solid var(--rmb-border);border-radius:var(--rmb-radius-lg);overflow:hidden;box-shadow:var(--rmb-shadow)}.rmb-email-list-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;background:var(--rmb-background-alt);border-bottom:1px solid var(--rmb-border)}.rmb-section-title{font-size:16px;font-weight:600;color:var(--rmb-text);margin:0}.rmb-email-count{font-size:13px;color:var(--rmb-text-muted);background:var(--rmb-background);padding:4px 10px;border-radius:12px;border:1px solid var(--rmb-border)}.rmb-email-list{max-height:500px;overflow-y:auto}.rmb-email-item{display:flex;align-items:flex-start;gap:16px;padding:16px 20px;border-bottom:1px solid var(--rmb-border);cursor:pointer;transition:var(--rmb-transition)}.rmb-email-item:last-child{border-bottom:none}.rmb-email-item:hover{background:var(--rmb-background-alt)}.rmb-email-item.rmb-unread{background:var(--rmb-primary-light)}.rmb-email-item.rmb-unread:hover{background:rgb(251 60 89 / .15)}.rmb-email-avatar{flex-shrink:0;width:42px;height:42px;border-radius:50%;background:var(--rmb-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;text-transform:uppercase}.rmb-email-content{flex:1;min-width:0}.rmb-email-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:4px}.rmb-email-sender{font-size:14px;font-weight:600;color:var(--rmb-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.rmb-email-date{font-size:12px;color:var(--rmb-text-muted);white-space:nowrap}.rmb-email-subject{font-size:14px;font-weight:500;color:var(--rmb-text);margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.rmb-email-preview{font-size:13px;color:var(--rmb-text-light);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.rmb-empty-state{padding:48px 24px;text-align:center}.rmb-empty-icon{width:64px;height:64px;margin-bottom:16px;opacity:.5}.rmb-empty-text{font-size:15px;color:var(--rmb-text-muted)}.rmb-modal{position:fixed;top:0;left:0;right:0;bottom:0;z-index:99999;display:flex;align-items:center;justify-content:center;padding:20px}.rmb-modal-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:rgb(0 0 0 / .5);backdrop-filter:blur(4px)}.rmb-modal-content{position:relative;width:100%;max-width:800px;max-height:90vh;background:var(--rmb-background);border-radius:var(--rmb-radius-lg);box-shadow:var(--rmb-shadow-lg);display:flex;flex-direction:column;overflow:hidden;animation:rmb-modal-in 0.2s ease}@keyframes rmb-modal-in{from{opacity:0;transform:scale(.95) translateY(-20px)}to{opacity:1;transform:scale(1) translateY(0)}}.rmb-modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--rmb-border);background:var(--rmb-background-alt)}.rmb-modal-title{font-size:18px;font-weight:600;color:var(--rmb-text);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;padding-right:16px}.rmb-modal-close{flex-shrink:0;width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:#fff0;border:none;border-radius:50%;color:var(--rmb-text-light);cursor:pointer;transition:var(--rmb-transition)}.rmb-modal-close:hover{background:var(--rmb-border);color:var(--rmb-text)}.rmb-modal-meta{padding:16px 20px;background:var(--rmb-background-alt);font-size:13px;color:var(--rmb-text-light)}.rmb-modal-meta-row{display:flex;gap:8px;margin-bottom:4px}.rmb-modal-meta-row:last-child{margin-bottom:0}.rmb-modal-meta-label{font-weight:600;color:var(--rmb-text);min-width:60px}.rmb-modal-body{flex:1;padding:20px;overflow-y:auto;font-size:14px;line-height:1.7}.rmb-modal-body img{max-width:100%;height:auto}.rmb-modal-body a{color:var(--rmb-primary);text-decoration:none}.rmb-modal-body a:hover{text-decoration:underline}.rmb-message{padding:14px 18px;border-radius:var(--rmb-radius);font-size:14px;margin-top:16px}.rmb-message-error{background:rgb(220 53 69 / .1);color:var(--rmb-error);border:1px solid rgb(220 53 69 / .2)}.rmb-message-success{background:rgb(40 167 69 / .1);color:var(--rmb-success);border:1px solid rgb(40 167 69 / .2)}.rmb-message-warning{background:rgb(255 193 7 / .1);color:#856404;border:1px solid rgb(255 193 7 / .2)}.rmb-skeleton{background:linear-gradient(90deg,var(--rmb-background-alt) 25%,#efefef 50%,var(--rmb-background-alt) 75%);background-size:200% 100%;animation:rmb-skeleton-loading 1.5s infinite;border-radius:var(--rmb-radius)}@keyframes rmb-skeleton-loading{0%{background-position:200% 0}100%{background-position:-200% 0}}.rmb-skeleton-item{padding:16px 20px;border-bottom:1px solid var(--rmb-border)}.rmb-skeleton-item:last-child{border-bottom:none}.rmb-skeleton-avatar{width:42px;height:42px;border-radius:50%}.rmb-skeleton-line{height:14px;margin-bottom:8px}.rmb-skeleton-line:last-child{margin-bottom:0}.rmb-skeleton-line-short{width:40%}.rmb-skeleton-line-medium{width:70%}.rmb-skeleton-line-long{width:90%}@media (max-width:768px){.rmb-container{padding:16px}.rmb-title{font-size:22px}.rmb-input-section{padding:16px}.rmb-options{flex-direction:column;gap:12px}.rmb-button-wrapper{justify-content:stretch}.rmb-button{width:100%}.rmb-email-item{padding:12px 16px;gap:12px}.rmb-email-avatar{width:36px;height:36px;font-size:14px}.rmb-modal{padding:0}.rmb-modal-content{max-height:100vh;border-radius:0}.rmb-modal-header{padding:12px 16px}.rmb-modal-title{font-size:16px}.rmb-modal-body{padding:16px}}.rmb-email-list::-webkit-scrollbar,.rmb-modal-body::-webkit-scrollbar{width:8px}.rmb-email-list::-webkit-scrollbar-track,.rmb-modal-body::-webkit-scrollbar-track{background:var(--rmb-background-alt)}.rmb-email-list::-webkit-scrollbar-thumb,.rmb-modal-body::-webkit-scrollbar-thumb{background:var(--rmb-border-dark);border-radius:4px}.rmb-email-list::-webkit-scrollbar-thumb:hover,.rmb-modal-body::-webkit-scrollbar-thumb:hover{background:var(--rmb-text-muted)}