:root {
    --xt-bg-gradient-start: #fff5f9;
    --xt-bg-gradient-mid: #f0f8ff;
    --xt-bg-gradient-end: #f5fcff;
    --xt-card-bg: rgba(255, 255, 255, 0.95);
    --xt-card-shadow: 0 8px 32px rgba(255, 107, 203, 0.12);
    --xt-title-color: #2a2a38;
    --xt-desc-color: #7a7a8c;
    --xt-section-title: #2a2a38;
    --xt-section-title-icon: #ff6bcb;
    --xt-notice-bg: linear-gradient(90deg, #fff5f9 0%, #f0f8ff 100%);
    --xt-notice-text: #5a5a6c;
    --xt-notice-icon: #ff6bcb;
    --xt-amount-bg: #fff;
    --xt-amount-border: #e8e8f0;
    --xt-amount-color: #2a2a38;
    --xt-amount-active-bg: linear-gradient(135deg, #ff6bcb 0%, #36d1dc 100%);
    --xt-amount-active-color: #fff;
    --xt-amount-active-border: transparent;
    --xt-input-bg: #fff;
    --xt-input-border: #e8e8f0;
    --xt-input-color: #2a2a38;
    --xt-input-placeholder: #b8b8c8;
    --xt-pay-bg: #fff;
    --xt-pay-border: #e8e8f0;
    --xt-pay-color: #5a5a6c;
    --xt-pay-active-bg: linear-gradient(135deg, #ff6bcb 0%, #36d1dc 100%);
    --xt-pay-active-color: #fff;
    --xt-submit-bg: linear-gradient(90deg, #ff6bcb 0%, #36d1dc 50%, #4a8eff 100%);
    --xt-submit-color: #fff;
    --xt-submit-hover-shadow: 0 6px 20px rgba(255, 107, 203, 0.35);
    --xt-tip-color: #999;
    --xt-link-color: #4a8eff;
    --xt-error-color: #f53f3f;
    --xt-modal-bg: rgba(0, 0, 0, 0.5);
    --xt-modal-box-bg: #fff;
    --xt-modal-title: #2a2a38;
    --xt-modal-text: #5a5a6c;
    --xt-modal-confirm-bg: linear-gradient(90deg, #ff6bcb 0%, #36d1dc 100%);
    --xt-modal-cancel-bg: #f5f5f5;
    --xt-popup-mask: rgba(0, 0, 0, 0.5);
    --xt-popup-bg: #fff;
    --xt-popup-title: #2a2a38;
    --xt-popup-content: #5a5a6c;
}

[data-theme="dopamine"] {
    --xt-bg-gradient-start: #ffecd2;
    --xt-bg-gradient-mid: #fcb69f;
    --xt-bg-gradient-end: #ff9a9e;
    --xt-amount-active-bg: linear-gradient(135deg, #ff006e 0%, #fb5607 50%, #ffbe0b 100%);
    --xt-pay-active-bg: linear-gradient(135deg, #ff006e 0%, #fb5607 50%, #ffbe0b 100%);
    --xt-submit-bg: linear-gradient(90deg, #ff006e 0%, #fb5607 50%, #ffbe0b 100%);
    --xt-submit-hover-shadow: 0 6px 20px rgba(255, 0, 110, 0.35);
    --xt-section-title-icon: #ff006e;
    --xt-notice-icon: #ff006e;
    --xt-link-color: #ff006e;
}

[data-theme="bluewhite"] {
    --xt-bg-gradient-start: #e6f4ff;
    --xt-bg-gradient-mid: #f8fcff;
    --xt-bg-gradient-end: #ffffff;
    --xt-amount-active-bg: linear-gradient(135deg, #4a8eff 0%, #00b4d8 100%);
    --xt-pay-active-bg: linear-gradient(135deg, #4a8eff 0%, #00b4d8 100%);
    --xt-submit-bg: linear-gradient(90deg, #4a8eff 0%, #00b4d8 100%);
    --xt-submit-hover-shadow: 0 6px 20px rgba(74, 142, 255, 0.35);
    --xt-section-title-icon: #4a8eff;
    --xt-notice-icon: #4a8eff;
    --xt-link-color: #4a8eff;
}

[data-theme="neontech"] {
    --xt-bg-gradient-start: #0f0f23;
    --xt-bg-gradient-mid: #1a1a3e;
    --xt-bg-gradient-end: #0d0d1a;
    --xt-card-bg: rgba(15, 15, 35, 0.92);
    --xt-card-shadow: 0 8px 32px rgba(0, 212, 255, 0.15);
    --xt-title-color: #ffffff;
    --xt-desc-color: #a0a0c0;
    --xt-section-title: #ffffff;
    --xt-section-title-icon: #00d4ff;
    --xt-notice-bg: rgba(0, 212, 255, 0.1);
    --xt-notice-text: #c0c0e0;
    --xt-notice-icon: #00d4ff;
    --xt-amount-bg: rgba(30, 30, 60, 0.8);
    --xt-amount-border: rgba(0, 212, 255, 0.2);
    --xt-amount-color: #ffffff;
    --xt-amount-active-bg: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --xt-input-bg: rgba(30, 30, 60, 0.8);
    --xt-input-border: rgba(0, 212, 255, 0.2);
    --xt-input-color: #ffffff;
    --xt-input-placeholder: #606080;
    --xt-pay-bg: rgba(30, 30, 60, 0.8);
    --xt-pay-border: rgba(0, 212, 255, 0.2);
    --xt-pay-color: #a0a0c0;
    --xt-pay-active-bg: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --xt-submit-bg: linear-gradient(90deg, #00d4ff 0%, #7c3aed 100%);
    --xt-submit-hover-shadow: 0 6px 20px rgba(0, 212, 255, 0.35);
    --xt-tip-color: #606080;
    --xt-link-color: #00d4ff;
    --xt-popup-bg: rgba(20, 20, 40, 0.95);
    --xt-popup-title: #ffffff;
    --xt-popup-content: #a0a0c0;
}

[data-theme="anime"] {
    --xt-bg-gradient-start: #fce7f3;
    --xt-bg-gradient-mid: #f0abfc;
    --xt-bg-gradient-end: #e0e7ff;
    --xt-amount-active-bg: linear-gradient(135deg, #fb7185 0%, #fb923c 50%, #c084fc 100%);
    --xt-pay-active-bg: linear-gradient(135deg, #fb7185 0%, #fb923c 50%, #c084fc 100%);
    --xt-submit-bg: linear-gradient(90deg, #fb7185 0%, #fb923c 50%, #c084fc 100%);
    --xt-submit-hover-shadow: 0 6px 20px rgba(251, 113, 133, 0.35);
    --xt-section-title-icon: #fb7185;
    --xt-notice-icon: #fb7185;
    --xt-link-color: #c084fc;
}

* {
    -webkit-tap-highlight-color: transparent;
    outline: none;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

body {
    background: linear-gradient(135deg, var(--xt-bg-gradient-start) 0%, var(--xt-bg-gradient-mid) 50%, var(--xt-bg-gradient-end) 100%);
    padding: 20px 15px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

body.has-wallpaper {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.15) 0%, rgba(0, 0, 0, 0.05) 50%, rgba(0, 0, 0, 0.1) 100%), url('') center/cover fixed !important;
    background-blend-mode: overlay;
}

.reward-card {
    width: 100%;
    max-width: 420px;
    background: var(--xt-card-bg);
    border-radius: 20px;
    padding: 28px 22px 24px;
    box-shadow: var(--xt-card-shadow);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.reward-header {
    text-align: center;
    margin-bottom: 22px;
}

.avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 14px;
    box-shadow: 0 4px 16px rgba(255, 107, 203, 0.25);
    background: #f5f5f5;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.reward-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--xt-title-color);
    margin-bottom: 6px;
}

.reward-desc {
    font-size: 14px;
    color: var(--xt-desc-color);
    line-height: 1.5;
}

.notice-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--xt-notice-bg);
    border-radius: 10px;
    padding: 10px 14px;
    margin-bottom: 22px;
}

.notice-bar svg {
    width: 18px;
    height: 18px;
    fill: var(--xt-notice-icon);
    flex-shrink: 0;
}

.notice-text {
    font-size: 13px;
    color: var(--xt-notice-text);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.section {
    margin-bottom: 22px;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--xt-section-title);
    margin-bottom: 12px;
}

.section-title svg {
    width: 18px;
    height: 18px;
    fill: var(--xt-section-title-icon);
}

.amount-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 14px;
}

.amount-item {
    background: var(--xt-amount-bg);
    border: 1.5px solid var(--xt-amount-border);
    border-radius: 12px;
    padding: 14px 6px;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--xt-amount-color);
    cursor: pointer;
    transition: all 0.25s ease;
}

.amount-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 203, 0.15);
}

.amount-item.active {
    background: var(--xt-amount-active-bg);
    border-color: var(--xt-amount-active-border);
    color: var(--xt-amount-active-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(255, 107, 203, 0.3);
}

.custom-amount {
    display: flex;
    align-items: center;
    background: var(--xt-input-bg);
    border: 1.5px solid var(--xt-input-border);
    border-radius: 10px;
    padding: 0 14px;
    height: 48px;
}

.amount-prefix {
    font-size: 16px;
    font-weight: 600;
    color: var(--xt-section-title-icon);
    margin-right: 8px;
}

.custom-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 15px;
    color: var(--xt-input-color);
    width: 100%;
}

.custom-input::placeholder {
    color: var(--xt-input-placeholder);
}

.error-tip {
    font-size: 12px;
    color: var(--xt-error-color);
    margin-top: 6px;
    display: none;
}

.error-tip.show {
    display: block;
}

.input-group {
    margin-bottom: 14px;
}

.form-input {
    width: 100%;
    background: var(--xt-input-bg);
    border: 1.5px solid var(--xt-input-border);
    border-radius: 10px;
    padding: 12px 14px;
    font-size: 14px;
    color: var(--xt-input-color);
    transition: border-color 0.2s;
}

.form-input:focus {
    border-color: var(--xt-section-title-icon);
}

.form-input::placeholder {
    color: var(--xt-input-placeholder);
}

.form-textarea {
    resize: none;
    min-height: 80px;
    font-family: inherit;
}

.pay-type-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.pay-type-item {
    background: var(--xt-pay-bg);
    border: 1.5px solid var(--xt-pay-border);
    border-radius: 12px;
    padding: 14px 10px;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s ease;
    color: var(--xt-pay-color);
    font-size: 14px;
}

.pay-type-item img {
    width: 32px;
    height: 32px;
    margin-bottom: 6px;
    object-fit: contain;
}

.pay-type-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 203, 0.12);
}

.pay-type-item.active {
    background: var(--xt-pay-active-bg);
    color: var(--xt-pay-active-color);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(255, 107, 203, 0.3);
}

.pay-type-item.active img {
    filter: brightness(0) invert(1);
}

.submit-btn {
    width: 100%;
    height: 52px;
    border: none;
    border-radius: 14px;
    background: var(--xt-submit-bg);
    color: var(--xt-submit-color);
    font-size: 17px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    margin-top: 10px;
}

.submit-btn:hover {
    box-shadow: var(--xt-submit-hover-shadow);
    transform: translateY(-1px);
}

.submit-btn:active {
    transform: translateY(0);
}

.tip-text {
    font-size: 12px;
    color: var(--xt-tip-color);
    text-align: center;
    margin-top: 12px;
}

.query-link {
    text-align: center;
    margin-top: 8px;
}

.query-link a {
    font-size: 13px;
    color: var(--xt-link-color);
    text-decoration: none;
}

.query-link a:hover {
    text-decoration: underline;
}

.modal-mask {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--xt-modal-bg);
    z-index: 999;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.modal-mask.show {
    display: flex;
}

.modal-box {
    background: var(--xt-modal-box-bg);
    border-radius: 16px;
    padding: 28px 22px 22px;
    width: 100%;
    max-width: 320px;
    text-align: center;
    animation: modalIn 0.25s ease;
}

@keyframes modalIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--xt-modal-title);
    margin-bottom: 12px;
}

.modal-text {
    font-size: 14px;
    color: var(--xt-modal-text);
    line-height: 1.6;
    margin-bottom: 22px;
}

.modal-btn-group {
    display: flex;
    gap: 12px;
}

.modal-btn {
    flex: 1;
    height: 42px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.modal-cancel {
    background: var(--xt-modal-cancel-bg);
    color: #666;
}

.modal-ok {
    background: var(--xt-modal-confirm-bg);
    color: #fff;
}

.popup-mask {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--xt-popup-mask);
    z-index: 998;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.popup-box {
    background: var(--xt-popup-bg);
    border-radius: 18px;
    padding: 28px 22px 20px;
    width: 100%;
    max-width: 340px;
    text-align: center;
    animation: modalIn 0.25s ease;
}

.popup-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--xt-popup-title);
    margin-bottom: 14px;
}

.popup-content {
    font-size: 14px;
    color: var(--xt-popup-content);
    line-height: 1.7;
    margin-bottom: 20px;
    white-space: pre-wrap;
    text-align: left;
}

.popup-footer {
    margin-bottom: 14px;
}

.popup-check {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 13px;
    color: var(--xt-desc-color);
    cursor: pointer;
}

.popup-check input {
    width: 16px;
    height: 16px;
    accent-color: var(--xt-section-title-icon);
}

.popup-btn {
    width: 100%;
    height: 44px;
    border: none;
    border-radius: 12px;
    background: var(--xt-submit-bg);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.popup-btn:hover {
    box-shadow: var(--xt-submit-hover-shadow);
}

@media (max-width: 480px) {
    .reward-card {
        padding: 22px 16px 18px;
        border-radius: 16px;
    }
    .amount-list {
        grid-template-columns: repeat(3, 1fr);
    }
    .pay-type-list {
        grid-template-columns: repeat(3, 1fr);
    }
    .reward-title {
        font-size: 20px;
    }
}