.support-hero {
    position: relative;
    overflow: hidden;
    padding: 132px 0 82px;
    background:
        radial-gradient(circle at 50% -20%, rgba(0, 0, 0, 0.06), transparent 44%),
        linear-gradient(180deg, #fff 0%, #f7f7f9 100%);
    border-bottom: 1px solid var(--border-color);
}

.support-hero-glow {
    position: absolute;
    width: 520px;
    height: 520px;
    left: 50%;
    top: -360px;
    transform: translateX(-50%);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.94);
    filter: blur(28px);
    pointer-events: none;
}

.support-hero-inner {
    position: relative;
    max-width: 920px;
    text-align: center;
}

.support-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    margin-bottom: 26px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.support-breadcrumb a {
    color: inherit;
    text-decoration: none;
}

.support-breadcrumb a:hover { color: var(--text-primary); }
.support-breadcrumb i { font-size: 0.62rem; color: #b7b7bc; }

.support-hero h1 {
    margin: 0 0 16px;
    font-size: clamp(2.4rem, 6vw, 4.25rem);
    line-height: 1.08;
    letter-spacing: -0.055em;
    font-weight: 800;
    background: linear-gradient(135deg, #101012, #55555a);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.support-hero > .container > p,
.support-hero-inner > p {
    max-width: 660px;
    margin: 0 auto 34px;
    color: var(--text-secondary);
    font-size: 1.08rem;
}

.support-search {
    width: min(100%, 720px);
    min-height: 66px;
    margin: 0 auto;
    padding: 0 18px 0 22px;
    display: flex;
    align-items: center;
    gap: 15px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.08);
    transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.support-search:focus-within {
    border-color: #8c8c91;
    box-shadow: 0 22px 55px rgba(0, 0, 0, 0.12);
    transform: translateY(-1px);
}

.support-search > i { color: #6f6f74; font-size: 1.05rem; }

.support-search input {
    flex: 1;
    min-width: 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--text-primary);
    font: inherit;
    font-size: 1rem;
}

.support-search input::placeholder { color: #a0a0a5; }

.support-search kbd {
    display: grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border: 1px solid #dedee2;
    border-bottom-width: 2px;
    border-radius: 7px;
    background: #f7f7f9;
    color: #88888d;
    font: 600 0.8rem var(--font-main);
}

.support-quick-links {
    margin-top: 18px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.support-quick-links button {
    border: 0;
    background: transparent;
    color: #5f5f64;
    font: inherit;
    cursor: pointer;
    text-decoration: underline;
    text-decoration-color: #cfcfd3;
    text-underline-offset: 3px;
}

.support-section { padding: 76px 0 96px; }

.support-layout {
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
}

.support-sidebar {
    position: sticky;
    top: 112px;
    display: grid;
    gap: 18px;
}

.support-sidebar-card,
.support-contact-card {
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: #fff;
}

.support-sidebar-card { padding: 18px 12px; }

.support-sidebar-label {
    padding: 0 10px 10px;
    color: #9a9a9f;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: .09em;
    text-transform: uppercase;
}

#knowledge-categories { display: grid; gap: 3px; }

.category-button {
    width: 100%;
    padding: 11px 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border: 0;
    border-radius: 11px;
    background: transparent;
    color: #626267;
    font: 600 .88rem var(--font-main);
    cursor: pointer;
    text-align: left;
    transition: background .2s ease, color .2s ease;
}

.category-button span:first-child {
    display: flex;
    align-items: center;
    gap: 10px;
}

.category-button i { width: 16px; color: #99999e; text-align: center; }
.category-button:hover { background: #f6f6f8; color: #1d1d1f; }
.category-button.active { background: #1d1d1f; color: #fff; }
.category-button.active i { color: #fff; }

.category-count {
    min-width: 24px;
    padding: 2px 7px;
    border-radius: 999px;
    background: rgba(0, 0, 0, .055);
    font-size: .7rem;
    text-align: center;
}

.category-button.active .category-count { background: rgba(255, 255, 255, .16); }

.support-contact-card {
    padding: 22px;
    background: #f7f7f9;
}

.support-contact-icon {
    width: 42px;
    height: 42px;
    margin-bottom: 16px;
    display: grid;
    place-items: center;
    border-radius: 13px;
    background: #1d1d1f;
    color: #fff;
    font-size: 1.15rem;
}

.support-contact-card h3 { margin-bottom: 7px; font-size: 1rem; }
.support-contact-card p { margin-bottom: 15px; color: var(--text-secondary); font-size: .82rem; line-height: 1.65; }
.support-contact-card a { color: var(--text-primary); font-size: .83rem; font-weight: 700; text-decoration: none; }
.support-contact-card a i { margin-left: 5px; font-size: .7rem; }

.support-content-head {
    min-height: 64px;
    margin-bottom: 24px;
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
}

.support-eyebrow {
    margin-bottom: 6px;
    color: #9a9a9f;
    font-size: .72rem;
    font-weight: 800;
    letter-spacing: .12em;
}

.support-content-head h2 {
    margin: 0;
    font-size: clamp(1.65rem, 3vw, 2.15rem);
    letter-spacing: -.035em;
}

#knowledge-result-count { color: var(--text-secondary); font-size: .83rem; }
.knowledge-list { display: grid; gap: 12px; }

.knowledge-item {
    overflow: hidden;
    border: 1px solid var(--border-color);
    border-radius: 17px;
    background: #fff;
    transition: border-color .2s ease, box-shadow .2s ease;
}

.knowledge-item:hover { border-color: #d2d2d6; }
.knowledge-item.open { border-color: #c9c9cd; box-shadow: 0 12px 34px rgba(0, 0, 0, .055); }

.knowledge-question {
    width: 100%;
    padding: 21px 22px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 34px;
    gap: 20px;
    align-items: center;
    border: 0;
    background: transparent;
    color: var(--text-primary);
    font-family: var(--font-main);
    cursor: pointer;
    text-align: left;
}

.knowledge-question-copy { min-width: 0; }

.knowledge-category {
    display: block;
    margin-bottom: 6px;
    color: #929297;
    font-size: .7rem;
    font-weight: 700;
}

.knowledge-title { display: block; font-size: .98rem; font-weight: 700; line-height: 1.45; }
.knowledge-summary { display: block; margin-top: 5px; color: var(--text-secondary); font-size: .81rem; font-weight: 400; }

.knowledge-toggle {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: #f5f5f7;
    color: #66666b;
    transition: transform .25s ease, background .25s ease, color .25s ease;
}

.knowledge-item.open .knowledge-toggle { transform: rotate(45deg); background: #1d1d1f; color: #fff; }

.knowledge-answer {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows .28s ease;
}

.knowledge-item.open .knowledge-answer { grid-template-rows: 1fr; }
.knowledge-answer-inner { overflow: hidden; }

.knowledge-answer-copy {
    margin: 0 22px;
    padding: 0 0 22px;
    border-top: 1px solid #eeeeef;
    color: #55555a;
    font-size: .9rem;
    line-height: 1.85;
    white-space: pre-line;
}

.knowledge-answer-copy p { padding-top: 18px; }

.knowledge-skeleton {
    height: 112px;
    border-radius: 17px;
    background: linear-gradient(90deg, #f3f3f5 25%, #fafafa 37%, #f3f3f5 63%);
    background-size: 400% 100%;
    animation: support-shimmer 1.3s infinite;
}

@keyframes support-shimmer { 0% { background-position: 100% 0; } 100% { background-position: 0 0; } }

.knowledge-empty {
    padding: 70px 20px;
    border: 1px dashed #d8d8dc;
    border-radius: 20px;
    text-align: center;
}

.knowledge-empty i { margin-bottom: 15px; color: #9a9a9f; font-size: 2rem; }
.knowledge-empty h3 { margin-bottom: 6px; }
.knowledge-empty p { margin-bottom: 22px; color: var(--text-secondary); font-size: .9rem; }

.support-bottom-cta { padding: 0 0 100px; }

.support-bottom-card {
    padding: 46px 50px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    border-radius: 26px;
    background: #f5f5f7;
}

.support-bottom-card h2 { margin-bottom: 8px; font-size: 1.8rem; letter-spacing: -.03em; }
.support-bottom-card > div > p:last-child { color: var(--text-secondary); }
.support-bottom-actions { display: flex; flex: 0 0 auto; gap: 10px; }

.support-chat-button {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 1300;
    min-height: 56px;
    padding: 8px 18px 8px 9px;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 0;
    border-radius: 999px;
    background: #1d1d1f;
    color: #fff;
    box-shadow: 0 16px 40px rgba(0, 0, 0, .22);
    font: 700 .88rem var(--font-main);
    cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease;
}

.support-chat-button:hover { transform: translateY(-2px); box-shadow: 0 20px 46px rgba(0, 0, 0, .27); }
.support-chat-button.panel-open { opacity: 0; pointer-events: none; transform: translateY(10px); }

.chat-button-icon {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: #fff;
    color: #1d1d1f;
}

.chat-online-dot {
    position: absolute;
    top: 8px;
    left: 39px;
    width: 10px;
    height: 10px;
    border: 2px solid #1d1d1f;
    border-radius: 50%;
    background: #31c768;
}

.support-chat-panel {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 1310;
    width: min(390px, calc(100vw - 32px));
    height: min(650px, calc(100vh - 48px));
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto auto;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, .11);
    border-radius: 24px;
    background: #fff;
    box-shadow: 0 28px 80px rgba(0, 0, 0, .22);
    opacity: 0;
    visibility: hidden;
    transform: translateY(18px) scale(.97);
    transform-origin: right bottom;
    transition: opacity .22s ease, visibility .22s ease, transform .22s ease;
}

.support-chat-panel.open { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }

.chat-header {
    min-height: 76px;
    padding: 14px 16px 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #eeeeef;
}

.chat-agent { display: flex; align-items: center; gap: 12px; }
.chat-agent-logo { position: relative; }
.chat-agent-logo img { width: 42px; height: 42px; border-radius: 13px; object-fit: cover; }

.chat-agent-online {
    position: absolute;
    right: -2px;
    bottom: -2px;
    width: 11px;
    height: 11px;
    border: 2px solid #fff;
    border-radius: 50%;
    background: #31c768;
}

.chat-agent h2 { margin: 0 0 1px; font-size: .96rem; }
.chat-agent p { color: var(--text-secondary); font-size: .7rem; }

.chat-close {
    width: 36px;
    height: 36px;
    border: 0;
    border-radius: 50%;
    background: #f5f5f7;
    color: #626267;
    cursor: pointer;
}

.chat-messages {
    overflow-y: auto;
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-content: flex-start;
    gap: 14px;
    background: #fafafa;
    scrollbar-width: thin;
}

.chat-message {
    width: 100%;
    height: fit-content;
    min-height: 0;
    flex: 0 0 auto;
    align-self: flex-start;
    display: flex;
    align-items: flex-end;
    gap: 8px;
}
.chat-message.user { align-self: stretch; justify-content: flex-end; }
.chat-avatar { flex: 0 0 27px; width: 27px; height: 27px; }
.chat-avatar img { width: 100%; height: 100%; border-radius: 9px; object-fit: cover; }

.chat-bubble {
    display: inline-block;
    width: fit-content;
    max-width: 82%;
    height: fit-content;
    min-height: 0;
    flex: 0 0 auto;
    align-self: flex-end;
    padding: 11px 13px;
    border: 1px solid #e5e5e8;
    border-radius: 15px 15px 15px 4px;
    background: #fff;
    color: #333337;
    font-size: .83rem;
    line-height: 1.65;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.chat-bubble > p {
    width: auto;
    height: auto;
    min-height: 0;
    margin: 0;
    flex: none;
}

.chat-message.user .chat-bubble {
    border-color: #1d1d1f;
    border-radius: 15px 15px 4px 15px;
    background: #1d1d1f;
    color: #fff;
}

.chat-suggestions { padding-left: 35px; display: flex; flex-wrap: wrap; gap: 7px; }

.chat-suggestions button {
    padding: 7px 10px;
    border: 1px solid #dedee1;
    border-radius: 999px;
    background: #fff;
    color: #5d5d62;
    font: 500 .72rem var(--font-main);
    cursor: pointer;
}

.chat-suggestions button:hover { border-color: #99999e; color: #1d1d1f; }

.chat-login-card {
    width: 100%;
    padding: 14px;
    border: 1px solid #e1e1e4;
    border-radius: 14px;
    background: #fff;
    text-align: center;
}

.chat-login-card p { margin-bottom: 10px; color: #55555a; font-size: .8rem; }
.chat-login-card a { display: inline-flex; padding: 8px 14px; border-radius: 999px; background: #1d1d1f; color: #fff; font-size: .76rem; font-weight: 700; text-decoration: none; }

.chat-sources { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 9px; }
.chat-source { padding: 3px 7px; border-radius: 6px; background: #f0f0f2; color: #747479; font-size: .65rem; }

.chat-status {
    padding: 9px 18px;
    align-items: center;
    gap: 9px;
    border-top: 1px solid #eeeeef;
    background: #fff;
    color: #77777c;
    font-size: .72rem;
}

.chat-status:not([hidden]) { display: flex; }
.chat-status-dots { display: flex; gap: 3px; }
.chat-status-dots i { width: 4px; height: 4px; border-radius: 50%; background: #77777c; animation: chat-dot 1.1s infinite ease-in-out; }
.chat-status-dots i:nth-child(2) { animation-delay: .14s; }
.chat-status-dots i:nth-child(3) { animation-delay: .28s; }
@keyframes chat-dot { 0%, 70%, 100% { transform: translateY(0); opacity: .35; } 35% { transform: translateY(-3px); opacity: 1; } }

.chat-form { padding: 12px 14px 10px; border-top: 1px solid #eeeeef; background: #fff; }

.chat-input-wrap {
    position: relative;
    min-height: 48px;
    padding: 7px 7px 7px 13px;
    display: flex;
    align-items: end;
    gap: 8px;
    border: 1px solid #dadade;
    border-radius: 16px;
    background: #fafafa;
}

.chat-cooldown {
    display: none;
    position: absolute;
    inset: -1px;
    z-index: 10;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid #dadade;
    border-radius: 16px;
    background: rgba(250, 250, 250, .92);
    backdrop-filter: blur(4px);
    color: #77777c;
    font-size: .78rem;
    pointer-events: none;
}

.chat-cooldown:not([hidden]) { display: flex; }

.chat-cooldown i {
    font-size: .7rem;
    color: #a0a0a5;
}

.chat-input-wrap[hidden],
.chat-captcha-gate[hidden] {
    display: none;
}

.chat-input-wrap:focus-within { border-color: #8f8f94; background: #fff; }

.chat-input-wrap textarea {
    flex: 1;
    min-width: 0;
    max-height: 100px;
    padding: 5px 0;
    resize: none;
    overflow-y: auto;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--text-primary);
    font: 500 .82rem/1.45 var(--font-main);
}

.chat-input-wrap textarea::placeholder { color: #a2a2a7; }

.chat-input-wrap button {
    flex: 0 0 34px;
    width: 34px;
    height: 34px;
    border: 0;
    border-radius: 11px;
    background: #1d1d1f;
    color: #fff;
    cursor: pointer;
}

.chat-input-wrap button:disabled { background: #bdbdc1; cursor: not-allowed; }

.chat-captcha-gate {
    padding: 10px 8px 8px;
    text-align: center;
}

.chat-captcha-gate > p:first-child {
    margin-bottom: 10px;
    color: #55555a;
    font-size: .76rem;
    line-height: 1.55;
}

.chat-captcha-widget {
    min-height: 78px;
    display: flex;
    justify-content: center;
    transform-origin: top center;
}

.chat-captcha-status {
    min-height: 18px;
    margin-top: 7px;
    color: #77777c;
    font-size: .7rem;
}

.chat-captcha-status.error { color: #b42318; }
.chat-disclaimer { margin-top: 7px; color: #aaaab0; font-size: .62rem; text-align: center; }

@media (max-width: 880px) {
    .support-layout { grid-template-columns: 1fr; gap: 28px; }
    .support-sidebar { position: static; }
    .support-sidebar-card { overflow-x: auto; padding: 9px; }
    .support-sidebar-label, .support-contact-card { display: none; }
    #knowledge-categories { display: flex; min-width: max-content; }
    .category-button { width: auto; }
    .category-count { display: none; }
    .support-bottom-card { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 640px) {
    .support-hero { padding: 110px 0 62px; }
    .support-hero h1 { font-size: 2.35rem; }
    .support-hero-inner > p { font-size: .95rem; }
    .support-search { min-height: 58px; border-radius: 17px; padding-left: 17px; }
    .support-search kbd { display: none; }
    .support-section { padding: 48px 0 72px; }
    .support-content-head { align-items: flex-start; flex-direction: column; gap: 6px; }
    .knowledge-question { padding: 18px 16px; grid-template-columns: minmax(0, 1fr) 30px; gap: 12px; }
    .knowledge-summary { display: none; }
    .knowledge-answer-copy { margin: 0 16px; }
    .support-bottom-card { padding: 32px 24px; }
    .support-bottom-actions { width: 100%; flex-direction: column; }
    .support-bottom-actions .btn { width: 100%; text-align: center; }
    .support-chat-button { right: 16px; bottom: 16px; }
    .support-chat-panel { right: 8px; bottom: 8px; width: calc(100vw - 16px); height: min(680px, calc(100vh - 16px)); border-radius: 21px; }
}

@media (max-width: 360px) {
    .chat-captcha-widget {
        margin: -7px 0 -16px;
        transform: scale(.84);
    }
}

@media (prefers-reduced-motion: reduce) {
    .knowledge-answer,
    .support-chat-panel,
    .support-chat-button { transition: none; }
    .knowledge-skeleton,
    .chat-status-dots i { animation: none; }
}