/* =============================================================================
   Mẫu đăng nhập 10 — Luxe: nền đen, vàng champagne, khung viền vàng đôi có hoa văn góc art-deco,
   tiêu đề Playfair Display, nhãn Montserrat in hoa giãn cách. Màn rộng chia đôi (hoa văn | form).
   Prefix lu-
   ============================================================================= */

.au-t10 {
    --au-font: 'Montserrat', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --lu-serif: 'Playfair Display', 'Times New Roman', Georgia, serif;
    --lu-ivory: #f4efe6;
    --lu-ivory-2: #ded6c6;
    --lu-gold: #d8b26e;
    --lu-gold-hi: #f3dfa2;
    --lu-gold-lo: #8f6a2c;
    --lu-line: rgba(216, 178, 110, .2);
    --lu-line-2: rgba(216, 178, 110, .38);
    --lu-line-soft: rgba(216, 178, 110, .1);
    --lu-foil: linear-gradient(100deg, #8f6a2c 0%, #c99a4a 16%, #f3dfa2 34%, #d8b26e 50%, #f3dfa2 66%, #c99a4a 84%, #8f6a2c 100%);
    --lu-foil-btn: linear-gradient(100deg, #f3dfa2 0%, #e0c07f 30%, #c99a4a 62%, #e6c98a 100%);
    --lu-ease: cubic-bezier(.22, .7, .2, 1);

    --au-bg: #0b0b0c;
    --au-ink: #f4efe6;
    --au-muted: #a7a193;
    --au-label: #cdb88a;
    --au-soft: rgba(216, 178, 110, .06);

    --au-input-h: 50px;
    --au-input-bg: #0e0e10;
    --au-input-ink: #f4efe6;
    --au-input-bw: 1px;
    --au-input-border: #322d25;
    --au-input-border-hover: #4c4436;
    --au-input-focus: #d8b26e;
    --au-autofill: #16150f;
    --au-ring: rgba(216, 178, 110, .13);
    --au-placeholder: #6f6a5e;
    --au-ic: #8a7d66;
    --au-radius: 2px;
    --au-gap: 20px;

    --au-primary: #d8b26e;
    --au-primary-ink: #17120a;
    --au-btn-bg: var(--lu-foil-btn);
    --au-btn-h: 54px;
    --au-btn-radius: 2px;
    --au-btn-shadow: 0 16px 36px -18px rgba(216, 178, 110, .75), inset 0 1px 0 rgba(255, 255, 255, .45);
    --au-link: #e0c387;

    --au-tabs-bg: transparent;
    --au-tabs-ink: #a7a193;
    --au-tabs-active-bg: transparent;
    --au-tabs-active-ink: #f3dfa2;
    --au-tabs-active-shadow: none;

    --au-pop-bg: #18171a;
    --au-pop-ink: #ded6c6;
    --au-pop-border: rgba(216, 178, 110, .34);
    --au-danger: #f2998c;
    --au-ok: #e3c27e;
}
body.au-t10 {
    /* lớp đầu: nhiễu hạt rất nhẹ (độ mờ nằm sẵn trong SVG), cuộn theo trang */
    background:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 .93 0 0 0 0 .8 0 0 0 .04 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"),
        radial-gradient(900px 600px at 85% -10%, rgba(216, 178, 110, .08), transparent 62%),
        var(--au-bg);
    background-repeat: repeat, no-repeat;
    overflow-x: hidden;
}
.au-t10 ::selection { background: rgba(216, 178, 110, .32); color: #fff; }

/* ---------- Khung trang ---------- */
.lu-page {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    min-height: 100vh;
    min-height: 100dvh;
}

/* Thanh trên phủ cả 2 cột: thương hiệu nằm trên nửa hoa văn, chọn ngôn ngữ ở nửa form */
.lu-top {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 38px clamp(24px, 4vw, 60px) 0;
    pointer-events: none;
}
.lu-top > * { pointer-events: auto; }
.lu-top .lang-picker-row { width: auto; padding: 0; }

/* ---------- Thương hiệu ---------- */
.au-t10 .au-brand { gap: 14px; color: var(--lu-ivory); }
.au-t10 .au-brand:hover { color: var(--lu-gold-hi); }
.au-t10 .au-brand__mark {
    position: relative;
    width: 38px;
    height: 38px;
    border-radius: 0;
    background: none;
    color: var(--lu-gold);
    font-family: var(--lu-serif);
    font-size: 17px;
    font-weight: 600;
}
.au-t10 .au-brand__mark::before,
.au-t10 .au-brand__mark::after {
    content: "";
    position: absolute;
    border: 1px solid var(--lu-gold);
    transform: rotate(45deg);
}
.au-t10 .au-brand__mark::before { inset: 6px; }
.au-t10 .au-brand__mark::after { inset: 2px; border-color: var(--lu-line-2); }
.au-t10 .au-brand__name {
    font-family: var(--lu-serif);
    font-size: 20px;
    font-weight: 600;
    letter-spacing: .01em;
}
/* logo ảnh có thể sáng/tối: đặt trên tấm ngà có viền vàng đôi để luôn rõ */
.au-t10 .au-brand__logo {
    max-width: 170px;
    max-height: 42px;
    padding: 5px 10px;
    border-radius: 1px;
    background: var(--lu-ivory);
    box-shadow: 0 0 0 1px var(--lu-gold), 0 0 0 4px var(--au-bg), 0 0 0 5px var(--lu-line-2);
}

/* ---------- Nửa trái: hoa văn art-deco ---------- */
.lu-aside {
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100vh;
    height: 100dvh;
    min-height: 640px;
    overflow: hidden;
    padding: 108px clamp(40px, 5vw, 80px) 92px;
    border-right: 1px solid var(--lu-line);
    background:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 .93 0 0 0 0 .8 0 0 0 .04 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"),
        radial-gradient(70% 55% at 50% 108%, rgba(216, 178, 110, .2), transparent 70%),
        radial-gradient(60% 40% at 0% 0%, rgba(216, 178, 110, .06), transparent 70%),
        linear-gradient(180deg, #101012, #0b0b0c);
}
.lu-aside__frame {
    position: absolute;
    inset: 18px;
    border: 1px solid var(--lu-line-soft);
    pointer-events: none;
}
.lu-aside__frame::before {
    content: "";
    position: absolute;
    inset: 6px;
    border: 1px solid var(--lu-line-soft);
}
.lu-aside__rays {
    position: absolute;
    left: 50%;
    bottom: -480px;
    width: 960px;
    height: 960px;
    margin-left: -480px;
    color: var(--lu-gold);
    opacity: .22;
    -webkit-mask-image: radial-gradient(closest-side, #000 35%, transparent 92%);
    mask-image: radial-gradient(closest-side, #000 35%, transparent 92%);
    pointer-events: none;
    animation: lu-spin 200s linear infinite;
}
@keyframes lu-spin {
    to { transform: rotate(360deg); }
}

.lu-aside__body {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
}
.lu-kicker {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    margin: 0;
    color: var(--lu-gold);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .32em;
    line-height: 1.6;
    text-transform: uppercase;
}
.lu-kicker::before,
.lu-kicker::after {
    content: "";
    width: 36px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--lu-gold));
}
.lu-kicker::after { background: linear-gradient(270deg, transparent, var(--lu-gold)); }
.lu-aside__title {
    margin: 18px 0 0;
    color: var(--lu-ivory);
    font-family: var(--lu-serif);
    font-size: clamp(2.5rem, 1.2rem + 2.4vw, 3.6rem);
    font-weight: 500;
    line-height: 1.12;
    letter-spacing: -.01em;
}
.lu-aside__title em,
.lu-title em {
    padding-right: .06em;
    background: var(--lu-foil);
    background-size: 240% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
    font-style: italic;
    animation: lu-foil 10s ease-in-out infinite alternate;
}
@keyframes lu-foil {
    from { background-position: 0 50%; }
    to { background-position: 100% 50%; }
}
.lu-aside__lead {
    max-width: 440px;
    margin: 18px 0 0;
    color: var(--au-muted);
    font-size: 15px;
    line-height: 1.75;
}

/* Thẻ hội viên minh hoạ — cùng kiểu thẻ ở landing */
.lu-show {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: clamp(22px, 4vh, 40px);
    perspective: 1200px;
    font-size: clamp(10px, 1.45vh, 13px);
}
.lu-mcard {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 25em;
    aspect-ratio: 1.586;
    padding: 1.4em 1.55em 1.25em;
    overflow: hidden;
    border: 1px solid transparent;
    border-radius: 1em;
    background:
        radial-gradient(120% 90% at 0% 0%, rgba(243, 223, 162, .16), transparent 52%) padding-box,
        repeating-linear-gradient(135deg, rgba(216, 178, 110, .055) 0 1px, transparent 1px 7px) padding-box,
        linear-gradient(152deg, #1f1d21 0%, #0e0e10 58%, #18171a 100%) padding-box,
        linear-gradient(135deg, #f3dfa2, #8f6a2c 35%, #d8b26e 55%, #6b4f20 80%, #f3dfa2) border-box;
    box-shadow: 0 2.6em 4.4em -1.8em rgba(0, 0, 0, .95), 0 0 0 1px rgba(0, 0, 0, .5);
    transform: rotateX(10deg) rotateY(-14deg) rotateZ(-4deg);
    animation: lu-float 9s ease-in-out infinite;
}
.lu-mcard::before {
    content: "";
    position: absolute;
    inset: .6em;
    border: 1px solid rgba(216, 178, 110, .26);
    border-radius: .6em;
    pointer-events: none;
}
@keyframes lu-float {
    50% { transform: rotateX(10deg) rotateY(-14deg) rotateZ(-4deg) translate3d(0, -.45em, 0); }
}
.lu-mcard__sheen {
    position: absolute;
    inset: 0;
    z-index: 3;
    overflow: hidden;
    border-radius: inherit;
    pointer-events: none;
}
.lu-mcard__sheen::before {
    content: "";
    position: absolute;
    top: -30%;
    bottom: -30%;
    left: 0;
    width: 38%;
    background: linear-gradient(100deg, transparent 0%, rgba(255, 244, 214, .05) 30%, rgba(255, 244, 214, .3) 50%, rgba(255, 244, 214, .05) 70%, transparent 100%);
    transform: translateX(-140%) skewX(-18deg);
    animation: lu-sheen 7.5s cubic-bezier(.45, .05, .25, 1) infinite;
}
@keyframes lu-sheen {
    0%, 18% { transform: translateX(-140%) skewX(-18deg); }
    58%, 100% { transform: translateX(330%) skewX(-18deg); }
}
.lu-mcard__fan {
    position: absolute;
    right: 1.1em;
    bottom: 0;
    width: 52%;
    height: 27%;
    color: var(--lu-gold);
    opacity: .26;
}
.lu-mcard__top {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.lu-mcard__mono {
    position: relative;
    display: grid;
    place-items: center;
    width: 2.5em;
    height: 2.5em;
    color: var(--lu-gold-hi);
    font-family: var(--lu-serif);
    font-weight: 600;
}
.lu-mcard__mono::before,
.lu-mcard__mono::after {
    content: "";
    position: absolute;
    inset: .42em;
    border: 1px solid var(--lu-gold);
    transform: rotate(45deg);
}
.lu-mcard__mono::after { inset: .14em; border-color: rgba(216, 178, 110, .4); }
.lu-mcard__mono > span { position: relative; top: .06em; }
.lu-mcard__label {
    color: var(--lu-gold);
    font-size: .6em;
    font-weight: 600;
    letter-spacing: .34em;
    text-transform: uppercase;
}
.lu-mcard__chip {
    position: relative;
    z-index: 1;
    display: block;
    width: 2.9em;
    height: 2.15em;
    margin-top: 1em;
    border-radius: .4em;
    background: linear-gradient(135deg, #f3dfa2 0%, #c99a4a 45%, #f0d696 70%, #9a7434 100%);
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .25);
}
.lu-mcard__chip > i {
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(60, 42, 12, .45);
}
.lu-mcard__chip > i:nth-child(1) { top: 33%; }
.lu-mcard__chip > i:nth-child(2) { top: 66%; }
.lu-mcard__chip > i:nth-child(3) { top: 18%; bottom: 18%; left: 50%; right: auto; width: 1px; height: auto; }
.lu-mcard__tier {
    position: relative;
    z-index: 1;
    margin: auto 0 0;
    padding-top: .4em;
    font-family: var(--lu-serif);
    font-size: 1.7em;
    font-style: italic;
    font-weight: 500;
    line-height: 1.15;
    text-align: left;
    background: var(--lu-foil);
    background-size: 240% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
    animation: lu-foil 10s ease-in-out infinite alternate;
}
.lu-mcard__bottom {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1em;
    margin-top: .5em;
    text-align: left;
}
.lu-mcard__holder,
.lu-mcard__rank { display: flex; flex-direction: column; min-width: 0; }
.lu-mcard__rank { align-items: flex-end; }
.lu-mcard__holder > small,
.lu-mcard__rank > small {
    color: #8a8478;
    font-size: .5em;
    font-weight: 600;
    letter-spacing: .28em;
    line-height: 1.6;
    text-transform: uppercase;
}
.lu-mcard__holder > b {
    overflow: hidden;
    color: var(--lu-ivory-2);
    font-size: .74em;
    font-weight: 500;
    letter-spacing: .14em;
    white-space: nowrap;
    text-overflow: ellipsis;
}
.lu-mcard__rank > b {
    color: var(--lu-gold-hi);
    font-family: var(--lu-serif);
    font-size: 1.05em;
    font-weight: 600;
    line-height: 1.2;
}
.lu-note {
    margin: 1.6em 0 0;
    color: #8a8478;
    font-family: var(--lu-serif);
    font-size: 12.5px;
    font-style: italic;
}

.lu-perks {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 0;
    margin: clamp(20px, 3.4vh, 34px) 0 0;
    padding: 0;
    list-style: none;
}
.lu-perks__item {
    display: inline-flex;
    align-items: baseline;
    gap: 10px;
    padding: 0 18px;
    color: var(--lu-ivory-2);
    font-size: 13.5px;
    font-weight: 500;
}
.lu-perks__item + .lu-perks__item { border-left: 1px solid var(--lu-line-2); }
.lu-perks__num {
    color: var(--lu-gold);
    font-family: var(--lu-serif);
    font-size: 15px;
    font-weight: 600;
}

.lu-aside__stats {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 42px;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 6px 14px;
    margin: 0;
    color: var(--au-muted);
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: .24em;
    text-transform: uppercase;
}
.lu-aside__stats > i {
    width: 5px;
    height: 5px;
    background: var(--lu-gold-lo);
    transform: rotate(45deg);
}

/* Góc art-deco dùng chung cho khung trái + thẻ form */
.lu-corner {
    position: absolute;
    z-index: 2;
    width: 38px;
    height: 38px;
    color: var(--lu-gold);
    pointer-events: none;
}
.lu-corner--tl { top: -5px; left: -5px; }
.lu-corner--tr { top: -5px; right: -5px; transform: scaleX(-1); }
.lu-corner--bl { bottom: -5px; left: -5px; transform: scaleY(-1); }
.lu-corner--br { bottom: -5px; right: -5px; transform: scale(-1, -1); }
.lu-aside__frame .lu-corner { width: 30px; height: 30px; opacity: .8; }

/* ---------- Nửa phải: thẻ form ---------- */
.lu-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 28px;
    min-width: 0;
    padding: 118px clamp(24px, 4vw, 64px) 30px;
}
.lu-card {
    position: relative;
    width: 100%;
    max-width: 468px;
    padding: 44px 42px 36px;
    border: 1px solid var(--lu-line-2);
    background:
        radial-gradient(120% 50% at 50% 0%, rgba(216, 178, 110, .08), transparent 70%),
        linear-gradient(180deg, #141416, #0f0f11);
    box-shadow: 0 50px 100px -50px rgba(0, 0, 0, .95);
}
.lu-card::before {
    content: "";
    position: absolute;
    inset: 7px;
    border: 1px solid var(--lu-line-soft);
    pointer-events: none;
}
.lu-head {
    position: relative;
    margin-bottom: 26px;
    text-align: center;
}
.lu-crest {
    display: block;
    width: 66px;
    height: 34px;
    margin: 0 auto 14px;
    color: var(--lu-gold);
}
.lu-eyebrow {
    margin: 0;
    color: var(--lu-gold);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .32em;
    line-height: 1.6;
    text-transform: uppercase;
}
.lu-title {
    margin: 10px 0 0;
    color: var(--lu-ivory);
    font-family: var(--lu-serif);
    font-size: clamp(2rem, 1.6rem + 1.2vw, 2.45rem);
    font-weight: 500;
    line-height: 1.15;
    letter-spacing: -.005em;
}
.lu-sub {
    max-width: 360px;
    margin: 12px auto 0;
    color: var(--au-muted);
    font-size: 14.5px;
    line-height: 1.7;
}

/* Tab Đăng nhập / Đăng ký: chữ in giãn cách, gạch chân vàng */
.au-t10 .au-tabs {
    gap: 0;
    margin-bottom: 26px;
    padding: 0;
    border-bottom: 1px solid var(--lu-line);
    border-radius: 0;
}
.au-t10 .au-tabs__item {
    position: relative;
    height: 46px;
    border-radius: 0;
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: .26em;
    text-transform: uppercase;
}
.au-t10 .au-tabs__item::after {
    content: "";
    position: absolute;
    left: 22%;
    right: 22%;
    bottom: -1px;
    height: 1px;
    background: var(--lu-gold);
    transform: scaleX(0);
    transition: transform .45s var(--lu-ease);
}
.au-t10 .au-tabs__item.is-active::after { transform: scaleX(1); }
.au-t10 .au-tabs__item:hover { color: var(--lu-gold-hi); }

/* ---------- Form ---------- */
.au-t10 .au-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .2em;
    text-transform: uppercase;
}
.au-t10 .au-optional { letter-spacing: .06em; text-transform: none; }
.au-t10 .au-link--sm { font-size: 12.5px; }
.au-t10 .au-input { caret-color: var(--lu-gold); }
.au-t10 .au-input:focus {
    background: #101012;
    box-shadow: 0 0 0 3px var(--au-ring), 0 10px 24px -14px rgba(216, 178, 110, .35);
}
.au-t10 .au-input:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0 100px var(--au-autofill) inset, 0 0 0 3px var(--au-ring);
}

/* Nút vàng ánh kim, vệt sáng lướt khi rê chuột */
.au-t10 .au-btn {
    isolation: isolate;
    overflow: hidden;
    margin-top: 8px;
    font-size: 12.5px;
    font-weight: 600;
    letter-spacing: .22em;
    text-transform: uppercase;
}
.au-t10 .au-btn::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: -70%;
    z-index: -1;
    width: 45%;
    background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .6), transparent);
    transform: skewX(-22deg);
    transition: left .9s var(--lu-ease);
}
.au-t10 .au-btn:hover::after { left: 135%; }
.au-t10 .au-btn svg { width: 16px; height: 16px; }

.au-t10 .au-chip-btn {
    height: 30px;
    border-color: var(--lu-line-2);
    border-radius: 2px;
    font-size: 10.5px;
    letter-spacing: .16em;
    text-transform: uppercase;
}
.au-t10 .au-switch { margin-top: 4px; font-size: 13.5px; }
.au-t10 .au-try { border: 1px solid var(--lu-line-soft); }
.au-t10 .au-check__box { border-radius: 1px; }
.au-t10 .au-field--pw .check-password { box-shadow: 0 24px 50px -16px rgba(0, 0, 0, .95); }
.au-t10 .au-field--pw .check-password > div:first-child {
    color: var(--lu-gold);
    font-size: 11px;
    letter-spacing: .2em;
    text-transform: uppercase;
}

.lu-foot {
    color: #8a8478;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: .22em;
    text-align: center;
    text-transform: uppercase;
}

/* ---------- Chọn ngôn ngữ trên nền tối (menu bị JS đưa ra body) ---------- */
.au-t10 .lang-picker,
.au-t10 .lp-menu {
    --lp-bg: #121214;
    --lp-border: rgba(216, 178, 110, .3);
    --lp-ink: #f4efe6;
    --lp-ink-2: #ded6c6;
    --lp-muted: #9b9586;
    --lp-hover: #1d1c1a;
    --lp-primary: #d8b26e;
    --lp-primary-soft: rgba(216, 178, 110, .14);
}
.au-t10 .lp-menu { --lp-bg: #141416; box-shadow: 0 24px 60px -16px rgba(0, 0, 0, .95); }
.au-t10 .lang-picker .lp-btn { border-radius: 2px; }

/* ---------- Modal OTP theo tông đen-vàng ---------- */
.au-t10 #modalOTP { background: rgba(5, 5, 6, .72); }
.au-t10 #modalOTP .modal-content {
    border: 1px solid var(--lu-line-2);
    border-radius: 2px;
    background: linear-gradient(180deg, #151517, #0f0f11);
    color: var(--lu-ivory);
    box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .95);
}
.au-t10 #modalOTP .modal-title { font-family: var(--lu-serif); font-size: 21px; font-weight: 500; }
.au-t10 #modalOTP .close { border-radius: 2px; background: rgba(216, 178, 110, .1); color: var(--lu-gold-hi); }
.au-t10 #modalOTP .otp-label { color: var(--au-muted); }
.au-t10 #modalOTP #otp {
    border-bottom-color: var(--lu-gold) !important;
    background-color: transparent;
    color: var(--lu-ivory);
}
.au-t10 #modalOTP .btn-confirm-otp {
    border-radius: 2px;
    background: var(--lu-foil-btn);
    font-size: 12.5px;
    letter-spacing: .2em;
    text-transform: uppercase;
}

/* ---------- Màn vừa: thu gọn nửa trái ---------- */
@media (max-width: 1279.98px) {
    .lu-aside { padding-inline: 44px; }
    .lu-perks__item { padding: 0 12px; }
}
@media (max-width: 1199.98px) {
    .lu-perks { display: none; }
    .lu-aside__stats { letter-spacing: .18em; }
}
@media (max-height: 760px) and (min-width: 1024px) {
    .lu-perks { display: none; }
}

/* ---------- Màn hẹp: bỏ nửa hoa văn, form một cột ---------- */
@media (max-width: 1023.98px) {
    .lu-page {
        display: flex;
        flex-direction: column;
    }
    .lu-top {
        position: relative;
        padding: 18px clamp(16px, 4vw, 32px);
        border-bottom: 1px solid var(--lu-line-soft);
    }
    .lu-aside { display: none; }
    .lu-main {
        flex: 1;
        justify-content: flex-start;
        padding: clamp(28px, 6vw, 56px) clamp(14px, 4vw, 32px) 26px;
    }
    /* tia nắng mờ sau thẻ form để màn hẹp vẫn giữ chất art-deco */
    .lu-main {
        background: radial-gradient(70% 40% at 50% 0%, rgba(216, 178, 110, .1), transparent 70%);
    }
}
@media (max-width: 520px) {
    .lu-top { padding: 14px 16px; }
    .au-t10 .au-brand__name { font-size: 18px; }
    .au-t10 .au-brand__mark { width: 34px; height: 34px; font-size: 15px; }
    .lu-main { padding: 26px 14px 22px; gap: 22px; }
    .lu-card { padding: 34px 20px 26px; }
    .lu-card::before { inset: 5px; }
    .lu-corner { width: 30px; height: 30px; }
    .lu-crest { width: 56px; height: 29px; margin-bottom: 10px; }
    .lu-title { font-size: 1.85rem; }
    .lu-sub { font-size: 14px; }
    .au-t10 .au-tabs { margin-bottom: 22px; }
    .au-t10 .au-tabs__item { letter-spacing: .2em; }
}

@media (prefers-reduced-motion: reduce) {
    .lu-aside__rays,
    .lu-mcard,
    .lu-mcard__sheen::before,
    .lu-mcard__tier,
    .lu-aside__title em,
    .lu-title em {
        animation: none !important;
    }
    .lu-mcard__sheen { display: none; }
}

/* ---------- Chân trang thương hiệu: vạch vàng mảnh, chữ hoa giãn cách ---------- */
.au-t10 .auth-footer__inner {
    max-width: 480px;
    padding: 14px 0 0;
    border-top: 1px solid var(--lu-line);
    color: #8a8478;
    font-size: 10.5px;
    letter-spacing: .12em;
    text-align: center;
    text-transform: uppercase;
}
.au-t10 .auth-footer__inner { justify-content: center; }
.au-t10 .auth-footer__info { text-align: center; }
.au-t10 .auth-footer__links { margin-left: 0; }
.au-t10 .auth-footer__links a { color: var(--lu-gold-hi); letter-spacing: .18em; }
.au-t10 .auth-footer__links a:hover { color: var(--lu-gold); text-decoration: none; }