* {
        margin: 0;
        padding: 0;
        box-sizing: border-box
    }
    
    :root {
        --primary-color: #ff2442;
        --primary-hover: #e01f3a;
        --secondary-color: #fb7185;
        --secondary-hover: #f43f5e;
        --accent-color: #ffc1cd;
        --background-color: #fef7f9;
        --card-background: #ffffff;
        --text-primary: #333333;
        --text-secondary: #666666;
        --text-light: #999999;
        --border-color: #ffe5ea;
        --success-color: #ff2442;
        --warning-color: #faad14;
        --error-color: #ff4d4f;
        --shadow: 0 8px 24px rgba(255,36,66,0.12);
        --border-radius: 12px;
        --transition: all 0.3s cubic-bezier(0.4,0,0.2,1)
    }
    
    body {
        font-family: 'PingFang SC','Helvetica Neue',Arial,sans-serif;
        line-height: 1.6;
        color: var(--text-primary);
        background-color: #f6f7fb;
        padding: 28px 18px 48px
    }
    
    .container {
        max-width: 1180px;
        margin: 0 auto;
        padding: 0;
        position: relative;
        overflow: visible
    }
    
    .container::before {
        display: none
    }
    
    h1 {
        color: #1f2937;
        margin: 0 0 10px;
        font-size: 34px;
        font-weight: 700;
        line-height: 1.2
    }
    
    h1::after {
        display: none
    }
    
    .form-group {
        margin-bottom: 25px
    }

    .input-helper {
        margin-top: 10px;
        color: var(--text-secondary);
        font-size: 13px;
        line-height: 1.6
    }
    
    label {
        display: block;
        margin-bottom: 12px;
        font-weight: 600;
        color: var(--text-primary);
        font-size: 16px
    }
    
    label::before {
        display: none
    }
    
    textarea {
        width: 100%;
        padding: 20px;
        border: 1px solid #e3e7ee;
        border-radius: var(--border-radius);
        resize: vertical;
        min-height: 140px;
        font-size: 16px;
        font-family: inherit;
        transition: var(--transition);
        background-color: rgba(255,255,255,0.95);
        backdrop-filter: blur(10px);
        box-shadow: inset 0 1px 2px rgba(15,23,42,0.04)
    }
    
    textarea:focus {
        outline: none;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(255,36,66,0.1)
    }
    
    .btn-group {
        display: flex;
        gap: 12px;
        margin-bottom: 30px;
        flex-wrap: wrap
    }
    
    .btn {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 14px 24px;
        border: none;
        border-radius: 10px;
        font-size: 16px;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition);
        position: relative;
        overflow: hidden;
        box-shadow: 0 8px 18px rgba(255,36,66,0.16)
    }

    .btn,
    .btn-primary,
    .btn-secondary,
    .btn-success {
        background-image: none !important
    }
    
    .btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 22px rgba(255,36,66,0.2)
    }
    
    .btn:active {
        transform: translateY(0);
        box-shadow: 0 2px 8px rgba(0,0,0,0.1)
    }
    
    .btn-primary {
        background-color: var(--primary-color) !important;
        color: white
    }
    
    .btn-primary:hover {
        background-color: var(--primary-hover) !important
    }
    
    .btn-secondary {
        background-color: var(--secondary-color) !important;
        color: white
    }
    
    .btn-secondary:hover {
        background-color: var(--secondary-hover) !important
    }
    
    .btn-success {
        background-color: var(--primary-color) !important;
        color: white
    }
    
    .btn-success:hover {
        background-color: var(--primary-hover) !important
    }

    .btn:disabled {
        cursor: not-allowed;
        opacity: 0.65;
        transform: none;
        box-shadow: none
    }

    .btn:disabled:hover,
    .btn:disabled:active {
        transform: none;
        box-shadow: none
    }
    
    .error {
        background-color: rgba(255,77,79,0.1);
        border: 1px solid var(--error-color);
        border-radius: var(--border-radius);
        padding: 16px;
        margin-bottom: 20px;
        display: none;
        color: var(--error-color);
        font-size: 14px;
        position: relative
    }
    
    .error-content {
        position: relative;
        z-index: 1
    }
    
    .loading {
        background: linear-gradient(135deg,rgba(255,255,255,0.8) 0%,rgba(255,255,255,0.9) 100%);
        border-radius: var(--border-radius);
        padding: 40px;
        margin: 20px 0;
        display: none;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        position: relative;
        backdrop-filter: blur(10px);
        box-shadow: 0 8px 32px rgba(0,0,0,0.1);
        border: 1px solid rgba(255,255,255,0.2)
    }
    
    .loading-spinner {
        width: 40px;
        height: 40px;
        border: 3px solid rgba(255,36,66,0.1);
        border-top: 3px solid var(--primary-color);
        border-radius: 50%;
        animation: spin 1s linear infinite;
        margin-bottom: 20px
    }
    
    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }
    
    .loading-text {
        font-size: 16px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 8px
    }
    
    .loading-subtext {
        font-size: 14px;
        color: var(--text-secondary);
        margin-bottom: 20px
    }
    
    .loading-progress {
        width: 100%;
        height: 8px;
        background-color: rgba(0,0,0,0.08);
        border-radius: 4px;
        overflow: hidden
    }
    
    .progress-bar {
        height: 100%;
        background: linear-gradient(90deg,var(--primary-color),var(--secondary-color));
        border-radius: 4px;
        width: 0%;
        transition: width 0.3s ease
    }
    
    #resultSection {
        margin-top: 30px;
        display: none
    }
    
    .result-header {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        margin-bottom: 20px;
        flex-wrap: wrap;
        gap: 16px
    }
    
    .result-title {
        font-size: 20px;
        font-weight: 700;
        color: var(--text-primary);
        margin: 0
    }
    
    .result-stats {
        display: flex;
        gap: 20px;
        flex-wrap: wrap
    }
    
    .stat-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 4px
    }
    
    .stat-item span:first-child {
        font-size: 12px;
        color: var(--text-secondary)
    }
    
    .stat-value {
        font-size: 18px;
        font-weight: 700;
        color: var(--primary-color)
    }
    
    .result-content {
        background-color: rgba(0,0,0,0.02);
        border: 1px solid var(--border-color);
        border-radius: var(--border-radius);
        padding: 20px;
        min-height: 200px;
        white-space: pre-wrap;
        font-size: 15px;
        line-height: 1.8;
        color: var(--text-primary);
        font-family: 'PingFang SC','Helvetica Neue',Arial,sans-serif
    }
    
    .features {
        margin-top: 40px;
        padding: 40px;
        border-top: 1px solid var(--border-color);
        background: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, rgba(255,247,249,0.9) 100%);
        border-radius: var(--border-radius);
        box-shadow: 0 4px 16px rgba(0,0,0,0.05);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255,229,234,0.5)
    }
    
    .features h2 {
        font-size: 24px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 20px;
        position: relative;
        padding-bottom: 12px
    }
    
    .features h2::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 60px;
        height: 3px;
        background: var(--primary-color);
        border-radius: 2px
    }
    
    .features ul {
        list-style: none;
        padding: 0
    }
    
    .features li {
        position: relative;
        padding-left: 30px;
        margin-bottom: 12px;
        line-height: 1.6
    }
    
    .features li::before {
        content: '✓';
        position: absolute;
        left: 0;
        top: 0;
        color: var(--success-color);
        font-weight: bold;
        font-size: 18px
    }
    
    .about {
        margin-top: 40px;
        padding: 40px;
        border-top: 1px solid var(--border-color);
        background: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, rgba(255,247,249,0.9) 100%);
        border-radius: var(--border-radius);
        box-shadow: 0 4px 16px rgba(0,0,0,0.05);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255,229,234,0.5)
    }
    
    .about h2 {
        font-size: 24px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 20px;
        position: relative;
        padding-bottom: 12px
    }
    
    .about h2::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 60px;
        height: 3px;
        background: var(--primary-color);
        border-radius: 2px
    }
    
    .about p {
        margin-bottom: 16px;
        line-height: 1.7
    }
    
    section {
        margin-top: 40px;
        padding: 40px;
        border-top: 1px solid var(--border-color);
        background: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, rgba(255,247,249,0.9) 100%);
        border-radius: var(--border-radius);
        box-shadow: 0 4px 16px rgba(0,0,0,0.05);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255,229,234,0.5)
    }
    
    section h2 {
        font-size: 24px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 20px;
        position: relative;
        padding-bottom: 12px
    }
    
    section h2::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 60px;
        height: 3px;
        background: var(--primary-color);
        border-radius: 2px
    }
    
    section h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-primary);
        margin-top: 24px;
        margin-bottom: 12px
    }
    
    section p {
        margin-bottom: 16px;
        line-height: 1.7
    }
    
    section ul {
        list-style: disc;
        padding-left: 20px;
        margin-bottom: 16px
    }
    
    section li {
        margin-bottom: 8px;
        line-height: 1.6
    }
    
    .author-info {
        margin-top: 40px;
        padding: 40px;
        border-top: 1px solid var(--border-color);
        text-align: center;
        background: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, rgba(255,247,249,0.9) 100%);
        border-radius: var(--border-radius);
        box-shadow: 0 4px 16px rgba(0,0,0,0.05);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255,229,234,0.5)
    }
    
    .author-title {
        font-size: 20px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 16px;
        position: relative;
        padding-bottom: 12px;
        display: inline-block
    }
    
    .author-title::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 60px;
        height: 3px;
        background: var(--primary-color);
        border-radius: 2px
    }
    
    .author-content p {
        margin-bottom: 16px;
        color: var(--text-secondary)
    }
    
    .contact-item {
        background-color: var(--accent-color);
        color: var(--text-primary);
        padding: 8px 16px;
        border-radius: 20px;
        font-size: 14px;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition);
        margin: 0 8px;
        display: inline-block;
        margin-bottom: 8px
    }
    
    .contact-item:hover {
        background-color: var(--secondary-color);
        color: white;
        transform: translateY(-2px)
    }
    
    .contact-item.copied {
        background-color: var(--success-color);
        color: white
    }
    
    footer {
        margin-top: 40px;
        padding-top: 20px;
        border-top: 1px solid var(--border-color);
        text-align: center;
        color: var(--text-light);
        font-size: 14px
    }
    
    .subtitle {
        color: var(--text-secondary);
        font-size: 16px;
        line-height: 1.6;
        max-width: 720px
    }
    
    .hero-tool {
        margin-bottom: 34px
    }

    .page-top {
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        gap: 18px;
        margin-bottom: 18px
    }

    .title-block {
        min-width: 0
    }

    .home-link {
        flex: 0 0 auto;
        text-decoration: none;
        white-space: nowrap
    }

    .app-layout {
        display: grid;
        grid-template-columns: minmax(0, 1fr) 360px;
        gap: 18px;
        align-items: start
    }

    .primary-workspace {
        min-width: 0
    }

    .account-sidebar {
        min-width: 0;
        position: sticky;
        top: 18px
    }
    
    .tool-container {
        background-color: var(--card-background);
        border-radius: 10px;
        padding: 24px;
        box-shadow: 0 12px 32px rgba(15,23,42,0.06);
        border: 1px solid #e8edf3
    }

    .quota-panel {
        background: var(--card-background);
        border: 1px solid #e8edf3;
        border-radius: 10px;
        padding: 18px;
        box-shadow: 0 12px 32px rgba(15,23,42,0.06)
    }

    .panel-title {
        font-size: 18px;
        font-weight: 700;
        color: #1f2937;
        margin-bottom: 4px
    }

    .panel-subtitle {
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.6;
        margin-bottom: 14px
    }

    .quota-header {
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        gap: 12px;
        margin-bottom: 12px;
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary)
    }

    .account-group {
        display: flex;
        flex-direction: column;
        gap: 8px;
        min-width: 0
    }

    .account-label {
        font-size: 13px;
        color: var(--text-secondary)
    }

    .account-row {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-wrap: wrap
    }

    .account-code {
        font-size: 18px;
        font-weight: 700;
        color: var(--primary-color);
        word-break: break-all
    }

    .quota-summary {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 10px;
        margin: 12px 0
    }

    .quota-card {
        min-width: 0;
        border: 1px solid #edf0f5;
        border-radius: 10px;
        padding: 12px;
        background: #fbfcfe
    }

    .quota-card.is-main {
        border-color: #ffd8e0;
        background: linear-gradient(135deg, #fff6f8, #ffffff)
    }

    .quota-card-label {
        display: block;
        margin-bottom: 6px;
        color: var(--text-secondary);
        font-size: 12px;
        line-height: 1.4
    }

    .quota-card-value {
        display: block;
        color: #1f2937;
        font-size: 22px;
        font-weight: 800;
        line-height: 1.15
    }

    .quota-card.is-main .quota-card-value {
        color: var(--primary-color)
    }

    .quota-badge {
        color: var(--primary-color)
    }

    .quota-badge.is-exhausted {
        color: var(--error-color)
    }

    .quota-hint {
        color: #4b5563;
        font-size: 14px;
        line-height: 1.7;
        margin-top: 12px;
        padding: 12px;
        background: #f9fafb;
        border: 1px solid #edf0f5;
        border-radius: 8px
    }

    .quota-stats {
        color: var(--text-secondary);
        font-size: 14px;
        line-height: 1.7;
        padding: 8px 0 0
    }

    .mini-btn {
        padding: 10px 14px;
        border-radius: 10px;
        font-size: 13px;
        box-shadow: none
    }

    .redeem-row {
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
        margin-top: 12px
    }

    .redeem-input {
        flex: 1 1 260px;
        min-height: 48px;
        padding: 0 16px;
        border: 1px solid var(--border-color);
        border-radius: var(--border-radius);
        font-size: 15px;
        background-color: #fff;
        transition: var(--transition)
    }

    .redeem-input:focus {
        outline: none;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(255,36,66,0.1)
    }

    .redeem-message {
        min-height: 22px;
        margin-top: 10px;
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.7
    }

    .redeem-message.is-error {
        color: var(--error-color)
    }

    .redeem-message.is-success {
        color: var(--success-color)
    }

    .support-panel {
        margin-top: 18px;
        display: grid;
        grid-template-columns: minmax(0,1fr) 112px;
        gap: 16px;
        align-items: center;
        background-color: #fff7f8;
        border: 1px solid #ffe1e7;
        border-radius: 10px;
        padding: 14px
    }

    .support-copy {
        font-size: 14px;
        line-height: 1.8;
        color: var(--text-primary)
    }

    .support-copy strong {
        color: var(--primary-color)
    }

    .support-note {
        margin-top: 8px;
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.7
    }

    .support-qr {
        width: 112px;
        aspect-ratio: 1 / 1;
        object-fit: cover;
        justify-self: end;
        background-color: #fff;
        border: 1px solid var(--border-color);
        border-radius: 8px;
        padding: 8px
    }

    .quota-modal-backdrop {
        position: fixed;
        inset: 0;
        z-index: 1000;
        display: none;
        align-items: center;
        justify-content: center;
        padding: 18px;
        background: rgba(15,23,42,0.52)
    }

    .quota-modal-backdrop.is-open {
        display: flex
    }

    .quota-modal {
        width: min(420px, 100%);
        background: #ffffff;
        border-radius: 12px;
        border: 1px solid #ffe1e7;
        box-shadow: 0 24px 80px rgba(15,23,42,0.24);
        padding: 22px;
        text-align: center;
        position: relative
    }

    .quota-modal-close {
        position: absolute;
        top: 12px;
        right: 12px;
        width: 34px;
        height: 34px;
        border: 1px solid #edf0f5;
        border-radius: 999px;
        background: #ffffff;
        color: #6b7280;
        font-size: 22px;
        line-height: 1;
        cursor: pointer
    }

    .quota-modal-title {
        padding: 8px 26px 0;
        color: #1f2937;
        font-size: 22px;
        font-weight: 800;
        line-height: 1.3
    }

    .quota-modal-desc {
        margin-top: 10px;
        color: #4b5563;
        font-size: 14px;
        line-height: 1.8
    }

    .quota-modal-qr {
        width: 190px;
        aspect-ratio: 1 / 1;
        object-fit: cover;
        display: block;
        margin: 18px auto 12px;
        padding: 10px;
        background: #fff7f8;
        border: 1px solid #ffe1e7;
        border-radius: 12px
    }

    .quota-modal-account {
        margin: 10px 0 14px;
        padding: 10px 12px;
        background: #f9fafb;
        border: 1px solid #edf0f5;
        border-radius: 10px;
        color: #4b5563;
        font-size: 13px;
        line-height: 1.7
    }

    .quota-modal-account strong {
        color: var(--primary-color);
        word-break: break-all
    }

    .quota-modal-actions {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
        margin-top: 12px
    }

    .quota-modal-actions .btn {
        width: 100%;
        justify-content: center;
        padding: 12px 14px;
        font-size: 14px
    }

    .quota-modal-later {
        margin-top: 10px;
        border: none;
        background: transparent;
        color: #6b7280;
        font-size: 13px;
        cursor: pointer
    }

    .account-tools {
        display: grid;
        gap: 10px;
        margin-top: 14px
    }

    .tool-block {
        border: 1px solid #edf0f5;
        border-radius: 8px;
        padding: 12px;
        background: #fbfcfe
    }

    .tool-title {
        cursor: pointer;
        list-style: none;
        font-size: 14px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 6px
    }

    details.tool-block > .tool-title::-webkit-details-marker {
        display: none
    }

    details.tool-block > .tool-title::after {
        content: '展开';
        float: right;
        color: var(--text-light);
        font-size: 12px;
        font-weight: 600
    }

    details.tool-block[open] > .tool-title::after {
        content: '收起'
    }

    .tool-text {
        font-size: 13px;
        line-height: 1.7;
        color: var(--text-secondary);
        margin-bottom: 10px
    }

    .inline-form {
        display: flex;
        gap: 10px;
        flex-wrap: wrap
    }

    .inline-input {
        flex: 1 1 180px;
        min-height: 44px;
        padding: 0 14px;
        border: 1px solid var(--border-color);
        border-radius: 10px;
        font-size: 14px;
        background-color: #fff;
        transition: var(--transition)
    }

    .inline-input:focus {
        outline: none;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(255,36,66,0.1)
    }
    
    @media (max-width: 768px) {
        body {
            padding: 20px 16px
        }
        
        .container {
            padding: 0
        }
        
        h1 {
            font-size: 28px;
            margin-bottom: 8px
        }

        .page-top {
            flex-direction: column
        }

        .home-link {
            width: 100%;
            justify-content: center
        }

        .app-layout {
            grid-template-columns: 1fr
        }

        .account-sidebar {
            position: static
        }

        .tool-container,
        .quota-panel {
            padding: 18px
        }

        .quota-summary {
            grid-template-columns: 1fr 1fr
        }

        .quota-card.is-main {
            grid-column: 1 / -1
        }
        
        .btn-group {
            flex-direction: column;
            align-items: stretch
        }
        
        .btn {
            justify-content: center
        }
        
        .result-header {
            flex-direction: column;
            align-items: flex-start
        }
        
        .result-stats {
            width: 100%;
            justify-content: space-between
        }
        
        .contact-item {
            margin: 0 4px 8px;
            padding: 6px 12px;
            font-size: 13px
        }

        .quota-header {
            align-items: flex-start
        }

        .account-row,
        .redeem-row {
            align-items: stretch
        }

        .support-panel {
            grid-template-columns: 1fr
        }

        .support-qr {
            justify-self: start;
            width: min(180px, 100%)
        }

        .quota-modal {
            padding: 20px 16px
        }

        .quota-modal-actions {
            grid-template-columns: 1fr
        }

        .account-tools {
            grid-template-columns: 1fr
        }
    }
    
    .ripple {
        position: absolute;
        border-radius: 50%;
        background: rgba(255,36,66,0.3);
        transform: scale(0);
        animation: ripple-animation 0.6s ease-out;
        pointer-events: none
    }
    
    @keyframes ripple-animation {
        to {
            transform: scale(4);
            opacity: 0
        }
    }

    #submitBtn,
    #copyBtn,
    #downloadBtn,
    #redeemBtn,
    #setRecoveryBtn,
    #recoverAccountBtn,
    #copyAccountBtn,
    #refreshAccountBtn,
    #quotaModalCopyBtn,
    #quotaModalRedeemBtn,
    .home-link {
        background: #ff2442 !important;
        background-color: #ff2442 !important;
        background-image: none !important;
        color: #ffffff !important
    }

    #submitBtn:hover,
    #copyBtn:hover,
    #downloadBtn:hover,
    #redeemBtn:hover,
    #setRecoveryBtn:hover,
    #recoverAccountBtn:hover,
    #copyAccountBtn:hover,
    #refreshAccountBtn:hover,
    #quotaModalCopyBtn:hover,
    #quotaModalRedeemBtn:hover,
    .home-link:hover {
        background: #e01f3a !important;
        background-color: #e01f3a !important;
        background-image: none !important
    }

    #accountCode,
    #quotaBadge,
    .quota-card.is-main .quota-card-value,
    .support-copy strong,
    .features li::before,
    .redeem-message.is-success {
        color: #ff2442 !important
    }