:root {
    --accent-purple: #7c4dff;
    --accent-purple-hover: #6536eb;
    --accent-purple-light: rgba(124, 77, 255, 0.12);
    --border-subtle: rgba(124, 77, 255, 0.15);
    --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.06);
    --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 14px 30px rgba(124, 77, 255, 0.2);
    --card-surface: rgba(255, 255, 255, 0.85);
    --card-surface-subtle: rgba(255, 255, 255, 0.65);
    --card-border: rgba(124, 77, 255, 0.14);
}

.support-page-stage {
    --text-primary: #1f1e24;
    --text-secondary: #4a454e;
    --text-muted: #787380;
    --card-surface: rgba(255, 255, 255, 0.85);
    --card-surface-subtle: rgba(255, 255, 255, 0.65);
    --card-border: rgba(124, 77, 255, 0.14);
}

html.dark-mode .support-page-stage,
body.dark-mode .support-page-stage {
    --accent-purple: #9d77ff;
    --accent-purple-hover: #8657ff;
    --accent-purple-light: rgba(124, 77, 255, 0.22);
    --border-subtle: rgba(255, 255, 255, 0.08);
    --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-hover: 0 14px 30px rgba(124, 77, 255, 0.3);
    --text-primary: #f5f4f8;
    --text-secondary: #b8b3c2;
    --text-muted: #7e798b;
    --card-surface: rgba(22, 21, 32, 0.85);
    --card-surface-subtle: rgba(255, 255, 255, 0.035);
    --card-border: rgba(255, 255, 255, 0.08);
}

html,
body {
    overflow-x: hidden !important;
    max-width: 100vw !important;
    width: 100% !important;
    box-sizing: border-box;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

.support-page-stage {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0.5rem 0 3.5rem 0;
    display: flex;
    flex-direction: column;
    gap: 2.2rem;
    position: relative;
    z-index: 2;
    box-sizing: border-box;
    overflow-x: hidden;
}

.classic-support-wrapper {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 85px 1.5rem 4rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2.2rem;
    position: relative;
    z-index: 2;
    box-sizing: border-box;
    overflow-x: hidden;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.75);
    --text-muted: rgba(255, 255, 255, 0.5);
    --accent-purple: var(--accent, #6c5ce7);
    --accent-purple-hover: var(--accent-hover, #5b4bc4);
    --accent-purple-light: rgba(108, 92, 231, 0.2);
    --border-subtle: var(--glass-border, rgba(255, 255, 255, 0.12));
    color: var(--text-primary);
}

body[data-theme="sunset"] .classic-support-wrapper,
html[data-theme="sunset"] .classic-support-wrapper,
body[data-theme="pastel"] .classic-support-wrapper,
html[data-theme="pastel"] .classic-support-wrapper {
    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --text-muted: #95a5a6;
    --border-subtle: rgba(0, 0, 0, 0.1);
}

.classic-support-wrapper .support-header-card,
.classic-support-wrapper .faq-panel-card,
.classic-support-wrapper .contact-panel-card,
.classic-support-wrapper .support-faq-card,
.classic-support-wrapper .quick-contact-card,
.classic-support-wrapper .ads-feed-header-bar,
.classic-support-wrapper .ad-feed-card,
.classic-support-wrapper .ad-empty-feed {
    background: var(--card-bg, rgba(255, 255, 255, 0.07)) !important;
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.12)) !important;
    backdrop-filter: blur(18px) !important;
    -webkit-backdrop-filter: blur(18px) !important;
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.28) !important;
    color: var(--text-primary) !important;
}

.classic-support-wrapper .channel-card {
    background: var(--glass-bg, rgba(255, 255, 255, 0.05)) !important;
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.1)) !important;
}

.classic-support-wrapper .channel-card:hover,
.classic-support-wrapper .ad-feed-card:hover {
    background: var(--card-hover, rgba(255, 255, 255, 0.12)) !important;
    border-color: var(--accent, #6c5ce7) !important;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4) !important;
}

.classic-support-wrapper .channel-icon-wrap {
    background: rgba(255, 255, 255, 0.08) !important;
    color: var(--accent, #6c5ce7) !important;
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.1)) !important;
}

.classic-support-wrapper .channel-link {
    color: var(--accent, #6c5ce7) !important;
}

.classic-support-wrapper .top-notice-banner {
    background: var(--card-bg, rgba(255, 255, 255, 0.07)) !important;
    border: 2px solid var(--accent, #6c5ce7) !important;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35) !important;
}

.classic-support-wrapper .top-notice-banner::before {
    background: var(--accent, #6c5ce7) !important;
}

.classic-support-wrapper .notice-icon-box {
    background: var(--accent, #6c5ce7) !important;
    color: #ffffff !important;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3) !important;
}

.classic-support-wrapper .notice-badge-pill {
    background: rgba(255, 255, 255, 0.08) !important;
    color: var(--accent, #6c5ce7) !important;
    border: 1px solid var(--accent, #6c5ce7) !important;
}

.classic-support-wrapper .scroll-to-ads-btn {
    background: var(--accent, #6c5ce7) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25) !important;
}

.classic-support-wrapper .scroll-to-ads-btn:hover {
    background: var(--accent-hover, #5b4bc4) !important;
}

.classic-support-wrapper .support-main-title,
.classic-support-wrapper h1,
.classic-support-wrapper h2,
.classic-support-wrapper h3,
.classic-support-wrapper h4,
.classic-support-wrapper .faq-question,
.classic-support-wrapper .faq-item-header,
.classic-support-wrapper .ad-feed-card h4,
.classic-support-wrapper .modal-header-row h2 {
    color: var(--text-primary) !important;
}

.classic-support-wrapper .support-lead-p,
.classic-support-wrapper p,
.classic-support-wrapper .channel-card p,
.classic-support-wrapper .faq-answer p,
.classic-support-wrapper .faq-item-body,
.classic-support-wrapper .ad-format-tag,
.classic-support-wrapper .ad-official-mark,
.classic-support-wrapper .form-group-field label {
    color: var(--text-secondary) !important;
}

.classic-support-wrapper .support-input,
.classic-support-wrapper .support-textarea,
.classic-support-wrapper .ad-search-input,
.classic-support-wrapper .ad-sort-select {
    background: rgba(0, 0, 0, 0.28) !important;
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.15)) !important;
    color: var(--text-primary) !important;
}

.classic-support-wrapper .support-input:focus,
.classic-support-wrapper .support-textarea:focus,
.classic-support-wrapper .ad-search-input:focus,
.classic-support-wrapper .ad-sort-select:focus {
    border-color: var(--accent, #6c5ce7) !important;
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.25) !important;
}

.classic-support-wrapper .ad-sort-select option {
    background: #161522 !important;
    color: #ffffff !important;
}

body[data-theme="sunset"] .classic-support-wrapper .ad-sort-select option,
body[data-theme="pastel"] .classic-support-wrapper .ad-sort-select option {
    background: #ffffff !important;
    color: #2d3436 !important;
}

.classic-support-wrapper .ad-search-bar-wrap {
    background: rgba(0, 0, 0, 0.2) !important;
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.12)) !important;
}

.classic-support-wrapper .filter-chip-btn {
    background: var(--glass-bg, rgba(255, 255, 255, 0.05)) !important;
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.1)) !important;
    color: var(--text-secondary) !important;
}

.classic-support-wrapper .filter-chip-btn:hover {
    background: rgba(255, 255, 255, 0.12) !important;
    border-color: var(--accent, #6c5ce7) !important;
    color: var(--text-primary) !important;
}

.classic-support-wrapper .filter-chip-btn.active {
    background: var(--accent, #6c5ce7) !important;
    border-color: var(--accent, #6c5ce7) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 14px rgba(108, 92, 231, 0.4) !important;
}

.classic-support-wrapper .faq-item {
    background: var(--glass-bg, rgba(255, 255, 255, 0.04)) !important;
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.1)) !important;
}

.classic-support-wrapper .faq-item.active {
    background: rgba(108, 92, 231, 0.15) !important;
    border-color: var(--accent, #6c5ce7) !important;
}

.classic-support-wrapper .support-submit-btn,
.classic-support-wrapper .ad-action-btn,
.classic-support-wrapper .reset-filter-btn {
    background: var(--accent, #6c5ce7) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 14px rgba(108, 92, 231, 0.35) !important;
}

.classic-support-wrapper .support-submit-btn:hover,
.classic-support-wrapper .ad-action-btn:hover,
.classic-support-wrapper .reset-filter-btn:hover {
    background: var(--accent-hover, #5b4bc4) !important;
}

.classic-support-wrapper .ad-index-badge {
    background: rgba(255, 255, 255, 0.08) !important;
    color: var(--text-secondary) !important;
}

.classic-support-wrapper .ad-size-badge {
    background: rgba(108, 92, 231, 0.18) !important;
    color: var(--accent, #6c5ce7) !important;
    border-color: rgba(108, 92, 231, 0.35) !important;
}

.classic-support-wrapper .ad-banner-display-area {
    background: rgba(0, 0, 0, 0.22) !important;
}

body[data-theme] .modal-box {
    background: #161522 !important;
    border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.12)) !important;
    color: var(--text-primary, #ffffff) !important;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7) !important;
}

body[data-theme] .modal-header-row h2 {
    color: var(--text-primary, #ffffff) !important;
}

body[data-theme] .modal-close-btn {
    background: var(--glass-bg, rgba(255, 255, 255, 0.08)) !important;
    color: var(--text-primary, #ffffff) !important;
}

body[data-theme] .ad-action-btn {
    background: var(--accent, #6c5ce7) !important;
    color: #ffffff !important;
}

body[data-theme] .ad-action-btn:hover {
    background: var(--accent-hover, #5b4bc4) !important;
}

body[data-theme="sunset"] .modal-box,
body[data-theme="pastel"] .modal-box {
    background: #ffffff !important;
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
    color: #2d3436 !important;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15) !important;
}

body[data-theme="sunset"] .modal-header-row h2,
body[data-theme="pastel"] .modal-header-row h2 {
    color: #2d3436 !important;
}

body[data-theme="sunset"] .modal-close-btn,
body[data-theme="pastel"] .modal-close-btn {
    background: rgba(0, 0, 0, 0.06) !important;
    color: #2d3436 !important;
}

body[data-theme] .feed-back-to-top {
    background: var(--accent, #6c5ce7) !important;
    color: #ffffff !important;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35) !important;
}

body[data-theme] .feed-back-to-top:hover {
    background: var(--accent-hover, #5b4bc4) !important;
}

body[data-theme="sunset"] .classic-support-wrapper .support-input,
body[data-theme="sunset"] .classic-support-wrapper .support-textarea,
body[data-theme="sunset"] .classic-support-wrapper .ad-search-input,
body[data-theme="sunset"] .classic-support-wrapper .ad-sort-select,
body[data-theme="pastel"] .classic-support-wrapper .support-input,
body[data-theme="pastel"] .classic-support-wrapper .support-textarea,
body[data-theme="pastel"] .classic-support-wrapper .ad-search-input,
body[data-theme="pastel"] .classic-support-wrapper .ad-sort-select {
    background: rgba(255, 255, 255, 0.8) !important;
    border-color: rgba(0, 0, 0, 0.15) !important;
    color: #2d3436 !important;
}

.top-notice-banner {
    background: linear-gradient(135deg, rgba(124, 77, 255, 0.08), rgba(255, 255, 255, 0.95));
    border: 1.5px solid rgba(124, 77, 255, 0.3);
    border-radius: 20px;
    padding: 1.4rem 1.8rem;
    box-shadow: 0 10px 30px rgba(124, 77, 255, 0.08);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

html.dark-mode .top-notice-banner,
body.dark-mode .top-notice-banner {
    background: linear-gradient(135deg, rgba(157, 119, 255, 0.16), rgba(22, 20, 32, 0.95));
    border-color: rgba(157, 119, 255, 0.35);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.5);
}

.top-notice-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--accent-purple);
}

.notice-icon-box {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    background: var(--accent-purple);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.7rem;
    flex-shrink: 0;
    box-shadow: 0 6px 18px rgba(124, 77, 255, 0.35);
}

.notice-text-content {
    flex: 1;
    min-width: 0;
}

.notice-headline {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    margin-bottom: 0.35rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
    word-break: break-word;
}

.notice-badge-pill {
    font-size: 0.72rem;
    padding: 3px 9px;
    border-radius: 999px;
    background: rgba(124, 77, 255, 0.15);
    color: var(--accent-purple);
    font-weight: 600;
    letter-spacing: 0.05em;
    border: 1px solid rgba(124, 77, 255, 0.25);
    text-transform: uppercase;
    white-space: nowrap;
}

.notice-subtext {
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--text-secondary);
    word-break: break-word;
}

.notice-action-group {
    flex-shrink: 0;
}

.scroll-to-ads-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.35rem;
    border-radius: 12px;
    background: var(--accent-purple);
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.92rem;
    box-shadow: 0 4px 14px rgba(124, 77, 255, 0.35);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    white-space: nowrap;
}

.scroll-to-ads-btn:hover {
    background: var(--accent-purple-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(124, 77, 255, 0.45);
}

.scroll-to-ads-btn i {
    font-size: 1.2rem;
}

.support-hero-section {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.support-header-card {
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid var(--border-subtle);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

html.dark-mode .support-header-card,
body.dark-mode .support-header-card {
    background: rgba(26, 24, 37, 0.75);
}

.support-title-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.8rem;
    width: 100%;
    box-sizing: border-box;
}

.support-main-title {
    font-size: clamp(1.4rem, 4.5vw, 2rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
    margin-bottom: 0.4rem;
    word-break: break-word;
}

.support-lead-p {
    font-size: clamp(0.9rem, 2.5vw, 1.05rem);
    color: var(--text-secondary);
    max-width: 720px;
    line-height: 1.55;
    word-break: break-word;
}

.system-status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.45rem 0.95rem;
    border-radius: 999px;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
    font-size: 0.82rem;
    font-weight: 600;
    max-width: 100%;
    box-sizing: border-box;
}

.status-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 10px #10b981;
    animation: pulseDot 2s infinite ease-in-out;
    flex-shrink: 0;
}

@keyframes pulseDot {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.4;
        transform: scale(0.85);
    }
}

.support-channels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.25rem;
    width: 100%;
    box-sizing: border-box;
}

.channel-card {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    padding: 1.3rem;
    transition: all 0.25s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 1rem;
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

html.dark-mode .channel-card,
body.dark-mode .channel-card {
    background: rgba(255, 255, 255, 0.03);
}

.channel-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-purple);
    box-shadow: var(--shadow-hover);
}

.channel-icon-wrap {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--accent-purple-light);
    color: var(--accent-purple);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.45rem;
    flex-shrink: 0;
}

.channel-card h4 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    word-break: break-word;
}

.channel-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.45;
    word-break: break-word;
}

.channel-link {
    font-size: 0.88rem;
    color: var(--accent-purple);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-all;
}

.channel-link:hover {
    text-decoration: underline;
}

.support-two-column-block {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 1.5rem;
    width: 100%;
    box-sizing: border-box;
}

@media (max-width: 900px) {
    .support-two-column-block {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
}

.faq-panel-card,
.contact-panel-card {
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid var(--border-subtle);
    border-radius: 24px;
    padding: 1.8rem;
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    min-width: 0;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

html.dark-mode .faq-panel-card,
html.dark-mode .contact-panel-card,
body.dark-mode .faq-panel-card,
body.dark-mode .contact-panel-card {
    background: rgba(26, 24, 37, 0.75);
}

.panel-block-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1.25rem;
    word-break: break-word;
}

.panel-block-title i {
    color: var(--accent-purple);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.faq-accordion-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
    box-sizing: border-box;
}

.faq-item {
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.5);
    transition: all 0.25s ease;
    width: 100%;
    box-sizing: border-box;
}

html.dark-mode .faq-item,
body.dark-mode .faq-item {
    background: rgba(255, 255, 255, 0.02);
}

.faq-item.active {
    border-color: var(--accent-purple);
    background: rgba(124, 77, 255, 0.04);
}

.faq-item-header {
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    padding: 0.95rem 1.15rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    gap: 0.75rem;
    word-break: break-word;
}

.faq-item-header i {
    font-size: 1.25rem;
    color: var(--accent-purple);
    transition: transform 0.25s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-item-header i {
    transform: rotate(180deg);
}

.faq-item-body {
    display: none;
    padding: 0 1.15rem 1.15rem 1.15rem;
    font-size: 0.9rem;
    line-height: 1.55;
    color: var(--text-secondary);
    word-break: break-word;
}

.faq-item.active .faq-item-body {
    display: block;
}

.contact-form-stacked {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    box-sizing: border-box;
}

.form-group-field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    width: 100%;
    box-sizing: border-box;
}

.form-group-field label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.support-input,
.support-textarea {
    width: 100%;
    max-width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    border: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.8);
    color: var(--text-primary);
    font-size: 16px;
    outline: none;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

html.dark-mode .support-input,
html.dark-mode .support-textarea,
body.dark-mode .support-input,
body.dark-mode .support-textarea {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}

.support-input:focus,
.support-textarea:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px var(--accent-purple-light);
}

.support-textarea {
    min-height: 110px;
    resize: vertical;
}

.support-submit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.4rem;
    border-radius: 12px;
    background: var(--accent-purple);
    color: #ffffff;
    border: none;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(124, 77, 255, 0.35);
    transition: all 0.2s ease;
    width: 100%;
}

.support-submit-btn:hover {
    background: var(--accent-purple-hover);
    transform: translateY(-2px);
}

.form-status-alert {
    padding: 0.8rem 1rem;
    border-radius: 12px;
    font-size: 0.88rem;
    line-height: 1.4;
    display: none;
    word-break: break-word;
}

.form-status-alert.success {
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.form-status-alert.error {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.ads-feed-section {
    scroll-margin-top: 80px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.ads-feed-header-bar {
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid var(--border-subtle);
    border-radius: 24px;
    padding: 1.6rem 1.8rem;
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

html.dark-mode .ads-feed-header-bar,
body.dark-mode .ads-feed-header-bar {
    background: rgba(26, 24, 37, 0.75);
}

.ads-header-top-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1.25rem;
    flex-wrap: wrap;
    width: 100%;
    box-sizing: border-box;
}

.ads-feed-title {
    font-size: clamp(1.25rem, 4vw, 1.75rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
    margin-bottom: 0.3rem;
    word-break: break-word;
}

.ads-feed-subtitle {
    font-size: clamp(0.85rem, 2.5vw, 0.95rem);
    color: var(--text-secondary);
    line-height: 1.45;
    word-break: break-word;
}

.ads-feed-stats-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    background: var(--accent-purple-light);
    color: var(--accent-purple);
    font-size: 0.82rem;
    font-weight: 600;
    border: 1px solid rgba(124, 77, 255, 0.2);
    box-sizing: border-box;
    max-width: 100%;
}

.ads-controls-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.ads-search-row {
    display: flex;
    gap: 0.85rem;
    flex-wrap: wrap;
    width: 100%;
    box-sizing: border-box;
}

.ad-search-box {
    flex: 1 1 260px;
    min-width: 0;
    position: relative;
    display: flex;
    align-items: center;
    box-sizing: border-box;
}

.ad-search-box i.bx-search {
    position: absolute;
    left: 1rem;
    font-size: 1.2rem;
    color: var(--text-muted);
    pointer-events: none;
}

.ad-search-input {
    width: 100%;
    padding: 0.75rem 2.8rem;
    border-radius: 14px;
    border: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    font-size: 16px;
    outline: none;
    box-sizing: border-box;
    transition: all 0.2s ease;
    text-overflow: ellipsis;
}

html.dark-mode .ad-search-input,
body.dark-mode .ad-search-input {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}

.ad-search-input:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px var(--accent-purple-light);
}

.clear-search-btn {
    position: absolute;
    right: 0.8rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.15rem;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
}

.clear-search-btn:hover {
    color: var(--text-primary);
}

.ad-sort-dropdown-wrap {
    flex: 0 1 230px;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-sizing: border-box;
}

.ad-sort-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 14px;
    border: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 500;
    outline: none;
    cursor: pointer;
    box-sizing: border-box;
    transition: all 0.2s ease;
}

html.dark-mode .ad-sort-select,
body.dark-mode .ad-sort-select {
    background: rgba(26, 24, 37, 0.95);
    border-color: rgba(255, 255, 255, 0.1);
}

.ad-categories-scroll-track {
    display: flex;
    gap: 0.55rem;
    overflow-x: auto;
    padding: 4px 2px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    scroll-snap-type: x proximity;
}

.ad-categories-scroll-track::-webkit-scrollbar {
    display: none;
}

.filter-chip-btn {
    padding: 0.5rem 1rem;
    border-radius: 999px;
    border: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.6);
    color: var(--text-secondary);
    font-size: 0.84rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    flex-shrink: 0;
    scroll-snap-align: start;
    touch-action: pan-x;
}

html.dark-mode .filter-chip-btn,
body.dark-mode .filter-chip-btn {
    background: rgba(255, 255, 255, 0.04);
}

.filter-chip-btn:hover {
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}

.filter-chip-btn.active {
    background: var(--accent-purple);
    border-color: var(--accent-purple);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(124, 77, 255, 0.3);
}

.ads-grid-feed {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 1.25rem;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.ad-feed-card {
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    padding: 1.25rem;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 1rem;
    transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
    min-width: 0;
    max-width: 100%;
    width: 100%;
    box-sizing: border-box;
}

html.dark-mode .ad-feed-card,
body.dark-mode .ad-feed-card {
    background: rgba(26, 24, 37, 0.75);
    border-color: rgba(255, 255, 255, 0.06);
}

.ad-feed-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-purple);
    box-shadow: var(--shadow-hover);
}

.ad-card-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    width: 100%;
    box-sizing: border-box;
}

.ad-sponsor-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid rgba(16, 185, 129, 0.25);
    flex-shrink: 0;
}

.ad-sponsor-pill i {
    font-size: 0.9rem;
}

.ad-unit-meta {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.ad-size-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--accent-purple);
    background: var(--accent-purple-light);
    border: 1px solid rgba(124, 77, 255, 0.25);
    padding: 2px 7px;
    border-radius: 6px;
    white-space: nowrap;
}

.ad-index-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.04);
    padding: 2px 8px;
    border-radius: 6px;
    white-space: nowrap;
}

html.dark-mode .ad-index-badge,
body.dark-mode .ad-index-badge {
    background: rgba(255, 255, 255, 0.06);
}

.ad-banner-display-area {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 100%;
    overflow: hidden;
    position: relative;
    padding: 0.5rem 0;
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.02);
    box-sizing: border-box;
}

html.dark-mode .ad-banner-display-area,
body.dark-mode .ad-banner-display-area {
    background: rgba(255, 255, 255, 0.02);
}

.ad-iframe-scaler {
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 100%;
    overflow: hidden;
    box-sizing: border-box;
}

.ad-network-iframe {
    margin: 0 auto;
    border: none;
    display: block;
    max-width: none;
    pointer-events: auto;
}

.ad-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-subtle);
    flex-wrap: wrap;
    width: 100%;
    box-sizing: border-box;
}

.ad-format-tag {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    word-break: break-word;
}

.ad-official-mark {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    white-space: nowrap;
}

.ads-feed-sentinel {
    padding: 2rem 1rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    width: 100%;
    box-sizing: border-box;
    word-break: break-word;
}

.sentinel-spinner {
    font-size: 1.8rem;
    color: var(--accent-purple);
}

.ad-empty-feed {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1.25rem;
    background: rgba(255, 255, 255, 0.5);
    border: 1px dashed var(--border-subtle);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    box-sizing: border-box;
}

.ad-empty-feed h4 {
    font-size: 1.2rem;
    color: var(--text-primary);
    word-break: break-word;
}

.ad-empty-feed p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    word-break: break-word;
}

.reset-filter-btn {
    margin-top: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: 10px;
    background: var(--accent-purple);
    color: #ffffff;
    border: none;
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
}

.feed-back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--accent-purple);
    color: #ffffff;
    border: none;
    box-shadow: 0 8px 24px rgba(124, 77, 255, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(12px);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 99;
}

.feed-back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.feed-back-to-top:hover {
    background: var(--accent-purple-hover);
    transform: translateY(-3px);
}

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 14, 21, 0.65);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    padding: 1rem;
    box-sizing: border-box;
}

.modal-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-box {
    background: #ffffff;
    border-radius: 24px;
    max-width: 600px;
    width: 100%;
    padding: 1.8rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    transform: translateY(16px) scale(0.97);
    transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
    position: relative;
    max-height: 88vh;
    overflow-y: auto;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
}

html.dark-mode .modal-box,
body.dark-mode .modal-box {
    background: #171622;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.modal-backdrop.active .modal-box {
    transform: translateY(0) scale(1);
}

.modal-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    gap: 1rem;
    width: 100%;
    box-sizing: border-box;
}

.modal-header-row h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    word-break: break-word;
}

.modal-close-btn {
    background: rgba(0, 0, 0, 0.05);
    border: none;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1.25rem;
    flex-shrink: 0;
    transition: background 0.2s ease;
}

html.dark-mode .modal-close-btn,
body.dark-mode .modal-close-btn {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.modal-body-scroll {
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    box-sizing: border-box;
}

.ad-action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.65rem 1.4rem;
    border-radius: 10px;
    background: var(--accent-purple);
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.88rem;
    transition: all 0.2s ease;
}

.ad-action-btn:hover {
    background: var(--accent-purple-hover);
    transform: translateY(-1px);
}

@media (max-width: 768px) {
    .top-notice-banner {
        flex-direction: column;
        align-items: stretch;
        padding: 1.15rem;
        gap: 1rem;
        border-radius: 18px;
    }

    .notice-icon-box {
        width: 44px;
        height: 44px;
        font-size: 1.4rem;
        border-radius: 12px;
    }

    .notice-headline {
        font-size: 1.05rem;
        gap: 0.4rem;
    }

    .notice-subtext {
        font-size: 0.88rem;
        line-height: 1.45;
    }

    .notice-action-group {
        width: 100%;
    }

    .scroll-to-ads-btn {
        width: 100%;
        justify-content: center;
        text-align: center;
    }

    .support-page-stage {
        padding: 0.25rem 0 2.5rem 0;
        gap: 1.5rem;
    }

    .classic-support-wrapper {
        padding: 72px 12px 3rem 12px;
        gap: 1.5rem;
    }

    .support-header-card,
    .faq-panel-card,
    .contact-panel-card,
    .ads-feed-header-bar {
        padding: 1.25rem;
        border-radius: 18px;
    }

    .support-channels-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .ads-header-top-row {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }

    .ads-feed-stats-pill {
        align-self: flex-start;
    }

    .ad-search-box {
        flex: 1 1 100%;
        width: 100%;
    }

    .ad-sort-dropdown-wrap {
        flex: 1 1 100%;
        width: 100%;
    }

    .ads-grid-feed {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .feed-back-to-top {
        bottom: 1.25rem;
        right: 1.25rem;
        width: 42px;
        height: 42px;
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .support-header-card,
    .faq-panel-card,
    .contact-panel-card,
    .ads-feed-header-bar,
    .top-notice-banner {
        padding: 1rem;
        border-radius: 16px;
    }

    .ad-feed-card {
        padding: 1rem;
        border-radius: 16px;
    }

    .modal-box {
        padding: 1.15rem;
        border-radius: 18px;
    }

    .classic-support-wrapper {
        padding: 68px 10px 2.5rem 10px;
        gap: 1.25rem;
    }

    .notice-headline {
        font-size: 0.98rem;
    }

    .support-main-title {
        font-size: 1.35rem;
    }

    .ads-feed-title {
        font-size: 1.2rem;
    }

    .filter-chip-btn {
        padding: 0.45rem 0.85rem;
        font-size: 0.8rem;
    }
}