:root {
    --surface-0: #06070a;
    --surface-1: rgba(15, 17, 23, .88);
    --surface-2: rgba(24, 27, 36, .72);
    --surface-3: rgba(255, 255, 255, .055);
    --stroke-soft: rgba(255, 255, 255, .09);
    --stroke-strong: rgba(255, 202, 88, .34);
    --shadow-card: 0 24px 70px rgba(0, 0, 0, .34);
    --shadow-gold: 0 14px 34px rgba(255, 176, 37, .18);
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 26px;
}

html { scroll-padding-top: 92px; }
body {
    min-height: 100dvh;
    overflow-x: hidden;
    background: #090a0d;
}
body::before {
    content: none;
}

.skip-link {
    position: fixed;
    top: 10px;
    left: 12px;
    z-index: 200;
    padding: 11px 16px;
    border-radius: 10px;
    background: #fff;
    color: #111;
    font-weight: 800;
    transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
    background: rgba(9, 10, 13, .96);
    border-bottom-color: rgba(255,255,255,.075);
    box-shadow: 0 8px 34px rgba(0,0,0,.18);
}
.nav { width: min(1200px, calc(100% - 40px)); height: 78px; }
.brand-logo { width: 46px; height: 46px; filter: drop-shadow(0 8px 18px rgba(255,184,48,.16)); }
.brand span { font-size: 18px; letter-spacing: .035em; }
.links { gap: 6px; }
.links a {
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    padding: 0 13px;
    border-radius: 11px;
    color: #b8bec8;
}
.links a:hover, .links a.active {
    color: #fff;
    background: rgba(255,255,255,.06);
}
.links a.active { box-shadow: inset 0 0 0 1px rgba(255,184,48,.18); color: #ffd16a; }
.nav-toggle {
    display: none;
    width: 46px;
    height: 46px;
    place-items: center;
    border: 1px solid var(--stroke-soft);
    border-radius: 13px;
    background: rgba(255,255,255,.045);
    color: #fff;
    cursor: pointer;
}
.nav-toggle svg { width: 22px; height: 22px; stroke: currentColor; }

.container { width: min(1200px, calc(100% - 40px)); }
.hero {
    min-height: auto;
    grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
    gap: clamp(38px, 6vw, 82px);
    padding: clamp(48px, 6vw, 76px) 0 58px;
}
.hero > div:first-child { position: relative; z-index: 1; }
h1 {
    max-width: 830px;
    font-size: clamp(36px, 4.2vw, 52px);
    line-height: 1.12;
    letter-spacing: -.035em;
    text-wrap: balance;
}
h2 { font-size: clamp(26px, 3vw, 38px); letter-spacing: -.025em; text-wrap: balance; }
h3 { line-height: 1.3; }
.lead { max-width: 720px; font-size: clamp(16px, 1.5vw, 18px); color: #b0b6c1; }
.eyebrow {
    min-height: auto;
    padding: 0 0 0 12px;
    border: 0;
    border-left: 2px solid #d99a25;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    color: #d9aa51;
    letter-spacing: .075em;
}
.btn {
    min-height: 52px;
    border-radius: 14px;
    padding-inline: 25px;
    box-shadow: 0 10px 26px rgba(229,9,20,.19);
}
.btn.gold { box-shadow: var(--shadow-gold), inset 0 1px rgba(255,255,255,.5); }
.btn:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, button:focus-visible {
    outline: 3px solid #ffd166;
    outline-offset: 3px;
}

.panel, .trust div, .plan-card, .step-card, .faq-card, .cta-panel, .guide-card {
    background: #111319;
    border-color: var(--stroke-soft);
    box-shadow: 0 14px 38px rgba(0, 0, 0, .22);
}
.visual { padding: 10px; border-radius: 18px; }
.visual::before {
    content: none;
}
.visual { position: relative; }
.qr-card { padding: 22px; border-radius: 12px; background: #0c0e13; }
.trust { gap: 12px; margin-top: 34px; }
.trust div {
    min-height: 64px;
    padding: 12px 14px;
    border-radius: 10px;
    text-align: left;
    justify-content: flex-start;
}
.trust div::before {
    content: "";
    flex: 0 0 auto;
    width: 8px;
    height: 8px;
    margin-right: 10px;
    border-radius: 50%;
    background: #41d596;
    box-shadow: 0 0 0 5px rgba(65,213,150,.09);
}

.section { padding: clamp(56px, 7vw, 84px) 0; }
.section + .section { border-top: 1px solid rgba(255,255,255,.055); }
.plans { gap: 22px; margin-top: 34px; }
.plan-card {
    min-height: 100%;
    padding: clamp(24px, 3.2vw, 38px);
    border-radius: 14px;
}
.plan-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 28px;
    right: 28px;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,.25), transparent);
}
.plan-card.featured::before { background: #d99a25; left: 0; right: 0; }
.plan-card .btn { margin-top: auto; }
.plan-card.selected { transform: translateY(-4px); }
.price { font-size: clamp(34px, 4vw, 48px); letter-spacing: -.045em; }
.badge { min-height: 27px; border: 1px solid rgba(255,184,48,.15); }
.stock::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; box-shadow: 0 0 0 5px rgba(16,185,129,.08); }

.steps, .faq-grid { gap: 18px; }
.step-card, .faq-card { border-radius: 12px; }
.step-number { width: 42px; height: 42px; }
.cta-panel { border-radius: 14px; overflow: hidden; background:#121318; }

.form-panel {
    position: relative;
    margin-top: 58px;
    padding: clamp(24px, 4vw, 44px);
    border-radius: 14px;
    overflow: hidden;
}
.form-panel::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 3px;
    background: #d99a25;
}
.form-grid { gap: 19px; }
label { gap: 9px; color: #f1f3f6; }
input, select {
    min-height: 54px;
    border-radius: 14px;
    border-color: rgba(255,255,255,.12);
    background: rgba(2,3,7,.5);
    font-size: 15px;
}
select option { background: #13151c; color: #fff; }
.field-error { display: block; color: #ffaaa8; font-size: 13px; font-weight: 600; }
.errors {
    margin: 16px 0;
    padding: 13px 16px;
    border: 1px solid rgba(239,68,68,.32);
    border-radius: 13px;
    background: rgba(239,68,68,.075);
}
.errors p { margin: 3px 0; color: #ffb4b0; }
.key-box { border-radius: 18px; }

.payment-layout { min-height: calc(100dvh - 78px); padding: clamp(34px,6vw,72px) 0; }
.payment-layout .summary { max-width: 780px; width: 100%; margin-inline: auto; padding: clamp(24px,4vw,42px); border-radius: 14px; }
.lookup-shell { max-width: 880px; margin-inline: auto; }
.lookup-heading { text-align: center; margin-bottom: 28px; }
.lookup-heading h1 { margin-inline: auto; font-size: clamp(36px,5vw,58px) !important; }
.lookup-heading p { max-width: 680px; margin-inline: auto; }
.lookup-form { display: grid; grid-template-columns: 1fr 1fr auto; gap: 14px; align-items: end; }
.lookup-form .btn { min-width: 140px; }
.lookup-trust { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 22px; }
.lookup-trust span { padding: 5px 0; border: 0; border-bottom: 1px solid rgba(255,255,255,.13); border-radius: 0; color: #aeb5c1; font-size: 12px; }

.footer { padding-bottom: 56px; background: rgba(4,5,8,.78); }
.mobile-buy-bar { display: none; }

@media (max-width: 1024px) {
    .hero { grid-template-columns: 1fr; padding-top: 62px; }
    .hero > div:first-child { max-width: 800px; }
    .visual { max-width: 680px; }
}

@media (max-width: 768px) {
    html { scroll-padding-top: 82px; }
    body { padding-bottom: 76px; }
    .container, .nav { width: min(100% - 28px, 620px); }
    .nav { height: 68px; }
    .brand span { font-size: 15px; }
    .brand-logo { width: 40px; height: 40px; }
    .nav-toggle { display: grid; }
    .links {
        position: absolute;
        top: 76px;
        left: 14px;
        right: 14px;
        display: none;
        padding: 10px;
        border: 1px solid var(--stroke-soft);
        border-radius: 18px;
        background: rgba(12,14,19,.97);
        box-shadow: 0 24px 70px rgba(0,0,0,.56);
    }
    .links.open { display: grid; }
    .links a { min-height: 48px; padding-inline: 14px; }
    .hero { gap: 30px; padding: 44px 0 48px; }
    h1 { font-size: clamp(33px, 9.2vw, 42px); line-height:1.13; }
    .hero-actions { display: grid; grid-template-columns: 1fr; }
    .trust { grid-template-columns: 1fr; }
    .trust div { min-height: 54px; }
    .section { padding: 60px 0; }
    .plans { grid-template-columns: 1fr; gap: 16px; }
    .plan-card { padding: 24px 20px; gap: 16px; border-radius:12px; }
    .plan-card h3 { min-height: 0; font-size: 20px; }
    .plan-card .price { font-size: 36px; }
    .plan-card .plan-description { display: block; min-height: 0; font-size: 14px; }
    .plan-card .feature-list { display: grid; }
    .plan-card .stock, .plan-card .error { font-size: 13px; }
    .plan-card .btn { min-height: 50px; font-size: 14px; }
    .form-panel { margin-top: 38px; }
    .lookup-form { grid-template-columns: 1fr; }
    .lookup-form .btn { width: 100%; }
    .payment-layout { display: block; }
    .mobile-buy-bar {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 80;
        display: grid;
        grid-template-columns: minmax(0,1fr) auto;
        gap: 12px;
        align-items: center;
        min-height: 70px;
        padding: 9px 14px max(9px, env(safe-area-inset-bottom));
        border-top: 1px solid rgba(255,255,255,.11);
        background: rgba(8,9,13,.94);
        backdrop-filter: blur(18px);
        box-shadow: 0 -12px 35px rgba(0,0,0,.38);
    }
    .mobile-buy-bar span { color: #aeb5c1; font-size: 12px; line-height: 1.35; }
    .mobile-buy-bar strong { display: block; color: #fff; font-size: 14px; }
    .mobile-buy-bar .btn { min-height: 48px; padding-inline: 18px; }
    .quick-contact { display:flex;right:14px;bottom:18px; }
    .mobile-buy-bar + .quick-contact { bottom:88px; }
}

@media (max-width: 390px) {
    .container, .nav { width: min(100% - 22px, 620px); }
    .brand span { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .visual { padding: 8px; }
    .qr-card { padding: 17px; }
    .form-panel { padding: 22px 17px; }
    .mobile-buy-bar > span { display:none; }
    .mobile-buy-bar { grid-template-columns:1fr; }
    .mobile-buy-bar .btn { justify-self:stretch; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* Customer purchase experience refresh — 2026-09-17 */
.title-accent {
    margin: -8px 0 18px;
    color: #e3aa3e;
    font-size: clamp(17px, 2vw, 22px);
    font-weight: 750;
    letter-spacing: -.015em;
}
.hero .lead { max-width: 680px; }
.trust div span { display: grid; gap: 3px; color: #9ea5b1; font-size: 12px; line-height: 1.45; }
.trust div strong { color: #f7f8fa; font-size: 14px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 32px; }
.section-heading h2 { margin-bottom: 10px; }
.section-heading .lead { margin-bottom: 0; }
.live-inventory {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 4px;
    padding: 10px 14px;
    border: 1px solid rgba(65,213,150,.18);
    border-radius: 999px;
    background: rgba(65,213,150,.055);
    color: #a9e7cd;
    font-size: 12px;
    font-weight: 650;
}
.live-inventory span { width: 8px; height: 8px; border-radius: 50%; background: #41d596; box-shadow: 0 0 0 5px rgba(65,213,150,.10); }
.price-note { margin-top: -10px; color: #aab0ba; font-size: 12px; font-weight: 600; }
.plan-card { isolation: isolate; }
.plan-card.featured { background: linear-gradient(155deg, rgba(37,31,20,.96), #111319 42%); }
.plan-card.selected { border-color: #e3aa3e; box-shadow: 0 22px 54px rgba(217,154,37,.16); }
.plan-card.selected::after {
    content: "Đã chọn";
    position: absolute;
    top: -11px;
    right: 18px;
    padding: 5px 10px;
    border-radius: 999px;
    background: #e3aa3e;
    color: #111;
    font-size: 11px;
    font-weight: 800;
}
.checkout-panel { scroll-margin-top: 92px; }
.checkout-heading { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 18px; align-items: start; margin-bottom: 26px; }
.checkout-heading h3 { margin-bottom: 7px; font-size: 24px; }
.checkout-heading p { margin: 0; max-width: 620px; }
.checkout-step { display: inline-grid; place-items: center; min-height: 30px; padding: 0 11px; border-radius: 999px; background: #e3aa3e; color: #111; font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; }
.checkout-safe { padding-left: 18px; border-left: 1px solid rgba(255,255,255,.1); color: #9299a5; font-size: 12px; line-height: 1.55; text-align: right; }
.checkout-safe strong { color: #dce0e6; font-weight: 650; }
#order-total-preview { display: grid; gap: 5px; padding: 20px 22px; background: linear-gradient(135deg, rgba(217,154,37,.09), rgba(255,255,255,.025)); border-color: rgba(217,154,37,.2); }
#order-total-preview .total-label { color: #aeb4be; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
#order-total-preview strong { color: #fff; font-size: clamp(22px, 3vw, 30px); }
.checkout-submit { gap: 12px; min-width: 300px; }
.checkout-submit span { font-size: 20px; transition: transform .2s ease; }
.checkout-submit:hover span { transform: translateX(4px); }
.support-inline strong { color: #fff; }

@media (max-width: 768px) {
    .title-accent { margin-top: -6px; }
    .section-heading { display: grid; gap: 18px; }
    .live-inventory { justify-self: start; white-space: normal; }
    .checkout-heading { grid-template-columns: 1fr; gap: 12px; }
    .checkout-step { justify-self: start; }
    .checkout-safe { padding: 12px 0 0; border-left: 0; border-top: 1px solid rgba(255,255,255,.09); text-align: left; }
    .checkout-submit { min-width: 0; width: 100%; }
    .support-inline { width: 100%; text-align: center; }
}

/* Light / dark appearance control */
html { color-scheme: dark; }
html[data-theme="light"] { color-scheme: light; }
.theme-toggle {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    min-width: 74px;
    min-height: 40px;
    padding: 0 12px;
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 999px;
    background: rgba(255,255,255,.045);
    color: #d8dce3;
    font: inherit;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.theme-toggle:hover { transform: translateY(-1px); background: rgba(255,255,255,.085); border-color: rgba(255,255,255,.18); }
.theme-icon { width: 17px; height: 17px; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.theme-icon-sun { display: none; }
.theme-icon-moon { display: block; }
html[data-theme="light"] .theme-icon-sun { display: block; }
html[data-theme="light"] .theme-icon-moon { display: none; }

html.theme-ready body,
html.theme-ready .site-header,
html.theme-ready .brand,
html.theme-ready .links,
html.theme-ready .links a,
html.theme-ready h1,
html.theme-ready h2,
html.theme-ready h3,
html.theme-ready p,
html.theme-ready .muted,
html.theme-ready .lead,
html.theme-ready .panel,
html.theme-ready .trust div,
html.theme-ready .plan-card,
html.theme-ready .step-card,
html.theme-ready .faq-card,
html.theme-ready .cta-panel,
html.theme-ready .guide-card,
html.theme-ready .qr-card,
html.theme-ready .vietmap-preview,
html.theme-ready input,
html.theme-ready select,
html.theme-ready .btn.ghost,
html.theme-ready .theme-toggle,
html.theme-ready .nav-toggle,
html.theme-ready .footer,
html.theme-ready .mobile-buy-bar,
html.theme-ready #order-total-preview {
    transition-property: background-color, color, border-color, box-shadow;
    transition-duration: 320ms;
    transition-timing-function: ease;
}
html.theme-ready .theme-icon { transition: transform 320ms ease, opacity 180ms ease; }
html[data-theme="light"].theme-ready .theme-icon-sun { transform: rotate(12deg); }
html[data-theme="dark"].theme-ready .theme-icon-moon { transform: rotate(-8deg); }

::view-transition-old(root),
::view-transition-new(root) {
    animation: none;
    mix-blend-mode: normal;
}
::view-transition-group(root),
::view-transition-image-pair(root) {
    animation: none;
}
::view-transition-old(root) { z-index: 1; }
::view-transition-new(root) { z-index: 2; }
html.theme-switching *,
html.theme-switching *::before,
html.theme-switching *::after {
    transition: none !important;
}
.theme-toggle:disabled { cursor: wait; }

html[data-theme="light"] body {
    color: #171a21;
    background-color: #f5f3ee;
    background-image: radial-gradient(circle at 82% 8%, rgba(217,154,37,.13), transparent 38rem), radial-gradient(circle at 10% 72%, rgba(180,42,42,.055), transparent 34rem);
}
html[data-theme="light"] .site-header { background: rgba(250,249,246,.9); border-bottom-color: rgba(24,27,34,.09); box-shadow: 0 8px 30px rgba(35,29,18,.045); }
html[data-theme="light"] .brand,
html[data-theme="light"] h1,
html[data-theme="light"] h2,
html[data-theme="light"] h3 { color: #171a21; -webkit-text-fill-color: currentColor; }
html[data-theme="light"] .links { color: #656b75; }
html[data-theme="light"] .links a { color: #656b75; }
html[data-theme="light"] .links a:hover { color: #171a21; }
html[data-theme="light"] .links a.active { color: #765411; background: rgba(217,154,37,.11); border-color: rgba(190,131,24,.22); }
html[data-theme="light"] p,
html[data-theme="light"] .muted,
html[data-theme="light"] .lead { color: #626873; }
html[data-theme="light"] .panel,
html[data-theme="light"] .trust div,
html[data-theme="light"] .plan-card,
html[data-theme="light"] .step-card,
html[data-theme="light"] .faq-card,
html[data-theme="light"] .cta-panel,
html[data-theme="light"] .guide-card { background: rgba(255,255,255,.88); border-color: rgba(25,28,35,.10); box-shadow: 0 16px 44px rgba(47,38,20,.075); }
html[data-theme="light"] .qr-card { background: #f8f7f3; border-color: rgba(25,28,35,.09); }
html[data-theme="light"] .vietmap-preview { background: #f0eee8; border-color: rgba(25,28,35,.09); }
html[data-theme="light"] .trust div span,
html[data-theme="light"] .price-note { color: #6d737d; }
html[data-theme="light"] .trust div strong { color: #1b1e24; }
html[data-theme="light"] .plan-card.featured { background: linear-gradient(155deg, #fff8e9, #fff 45%); }
html[data-theme="light"] .plan-card::before { background: linear-gradient(90deg, transparent, rgba(25,28,35,.2), transparent); }
html[data-theme="light"] .plan-card.featured::before { background: #c78918; }
html[data-theme="light"] .feature-list { color: #3c424c; }
html[data-theme="light"] label { color: #252932; }
html[data-theme="light"] input,
html[data-theme="light"] select { color: #171a21; background: #fff; border-color: rgba(25,28,35,.14); }
html[data-theme="light"] select option { color: #171a21; background: #fff; }
html[data-theme="light"] #order-total-preview { background: linear-gradient(135deg, rgba(217,154,37,.12), rgba(255,255,255,.8)); border-color: rgba(183,122,12,.23); }
html[data-theme="light"] #order-total-preview strong { color: #171a21; }
html[data-theme="light"] .btn.ghost { color: #252932; background: rgba(255,255,255,.65); border-color: rgba(25,28,35,.13); }
html[data-theme="light"] .btn.ghost:hover:not(:disabled) { color: #111318; background: #fff; border-color: rgba(25,28,35,.22); }
html[data-theme="light"] .theme-toggle,
html[data-theme="light"] .nav-toggle { color: #30353d; background: rgba(255,255,255,.76); border-color: rgba(25,28,35,.13); }
html[data-theme="light"] .footer { color: #666c76; background: #ebe8e1; border-top-color: rgba(25,28,35,.08); }
html[data-theme="light"] .mobile-buy-bar { background: rgba(250,249,246,.95); border-top-color: rgba(25,28,35,.11); }
html[data-theme="light"] .mobile-buy-bar span { color: #646a73; }
html[data-theme="light"] .mobile-buy-bar strong { color: #171a21; }
html[data-theme="light"] .checkout-safe strong,
html[data-theme="light"] .support-inline strong { color: #252932; }
html[data-theme="light"] .section + .section { border-top-color: rgba(25,28,35,.07); }

/* Unified storefront palette and mobile type scale — 2026-09-19 */
:root {
    --gold-pure: #f5b323;
    --gold-grad: linear-gradient(135deg, #ffd66b 0%, #e9a315 100%);
    --gold-glow: rgba(245,179,35,.22);
    --green: #34c99a;
    --stroke-soft: rgba(255,255,255,.09);
}
body { background-color: #080a0e; }
.panel, .trust div, .plan-card, .step-card, .faq-card, .guide-card { background-color: #11141a; }
.price { color: #f5b323; }
.feature-list { color: #c8cdd6; }
.feature-list li::before,
.stock { color: #34c99a; }
.stock::before { box-shadow: 0 0 0 5px rgba(52,201,154,.09); }
.plan-card.featured {
    background: linear-gradient(155deg, rgba(43,34,18,.82), #11141a 44%);
    border-color: rgba(245,179,35,.26);
}
.plan-card.selected {
    border-color: #f5b323;
    box-shadow: 0 0 0 1px rgba(245,179,35,.16), 0 22px 54px rgba(245,179,35,.12);
}
.btn:not(.gold):not(.ghost) {
    color: #f5f6f8;
    background: linear-gradient(135deg, #292e38, #1a1e26);
    border: 1px solid rgba(255,255,255,.10);
    box-shadow: 0 8px 22px rgba(0,0,0,.2);
}
.plan-card .error { color: #e58c96; font-weight: 650; }
.plan-card .btn:disabled {
    opacity: 1;
    color: #d9939c;
    background: rgba(229,140,150,.075);
    border: 1px solid rgba(229,140,150,.18);
}
.mobile-buy-bar {
    background: rgba(8,10,14,.96);
    border-top-color: rgba(255,255,255,.09);
}
.quick-contact-btn {
    opacity: .9;
    box-shadow: 0 8px 24px rgba(0,0,0,.3), 0 0 0 1px rgba(255,255,255,.08);
}
.quick-contact-btn:hover { opacity: 1; }
.quick-contact-zalo { background-image: linear-gradient(135deg,#d91f2b,#f05a2a 55%,#e4a52a); }
.quick-contact-phone { background-image: linear-gradient(135deg,#f3b32a,#ee7a22 58%,#d94a2c); }

html[data-theme="light"] body { background-color: #f5f3ee; }
html[data-theme="light"] .panel,
html[data-theme="light"] .trust div,
html[data-theme="light"] .plan-card,
html[data-theme="light"] .step-card,
html[data-theme="light"] .faq-card,
html[data-theme="light"] .guide-card { background-color: rgba(255,255,255,.9); }
html[data-theme="light"] .plan-card.featured {
    background: linear-gradient(155deg, #fff8e9, rgba(255,255,255,.96) 48%);
    border-color: rgba(199,137,24,.26);
}
html[data-theme="light"] .plan-card .error { color: #a95662; }
html[data-theme="light"] .plan-card .btn:disabled {
    color: #a95662;
    background: #f8eeee;
    border-color: rgba(169,86,98,.18);
}
html[data-theme="light"] .vietmap-preview-copy strong { color: #252932; }
html[data-theme="light"] .vietmap-preview-dots span {
    background: rgba(37,41,50,.18);
    border-color: rgba(37,41,50,.12);
}
html[data-theme="light"] .vietmap-preview-dots span:hover { background: rgba(37,41,50,.34); }

@media (max-width: 768px) {
    .plan-card { gap: 18px; }
    .plan-card h3 { font-size: 22px; line-height: 1.28; }
    .plan-card .price { font-size: clamp(38px, 10vw, 40px); line-height: 1.05; }
    .price-note { margin-top: -8px; font-size: 14px; line-height: 1.45; }
    .plan-card .plan-description { font-size: 16px; line-height: 1.55; }
    .plan-card .feature-list { gap: 14px; margin-top: 2px; }
    .plan-card .feature-list li { font-size: 15px; line-height: 1.5; }
    .plan-card .stock, .plan-card .error { font-size: 14px; }
    .plan-card .btn { min-height: 50px; font-size: 16px; font-weight: 700; }
    .mobile-buy-bar span { font-size: 13px; }
    .mobile-buy-bar strong { font-size: 15px; }
    .quick-contact { right: 10px; gap: 8px; }
    .quick-contact-btn { width: 42px; height: 42px; }
    .quick-contact-zalo svg { width: 27px; height: 27px; }
}

@media (max-width: 1180px) {
    .theme-label { display: none; }
    .theme-toggle { min-width: 42px; width: 42px; padding: 0; }
    .links a { padding-inline: 9px; }
}
@media (max-width: 768px) {
    .nav-toggle { margin-left: auto; }
    .theme-toggle { order: 2; }
    .nav-toggle { order: 3; }
    .links { order: 4; }
    html[data-theme="light"] .links { background: rgba(250,249,246,.98); border-color: rgba(25,28,35,.11); box-shadow: 0 24px 70px rgba(47,38,20,.14); }
}