/* ==========================================================================
   Nexus UI — Landing page (trang chủ ngoài)
   Dùng chung biến màu với app.css qua base.css
   ========================================================================== */

.lp {
    min-height: 100vh;
    overflow-x: hidden;
    background:
        radial-gradient(900px 520px at 8% -12%, var(--bg-grad-1), transparent 66%),
        radial-gradient(820px 480px at 94% -4%, var(--bg-grad-2), transparent 62%),
        radial-gradient(700px 420px at 50% 108%, var(--bg-grad-1), transparent 70%),
        var(--bg);
}

/* --------------------------------- WRAP ----------------------------------
 * Container chính của landing page.
 *
 * ★ MỞ RỘNG THEO LAPTOP ★
 *   Trước đây `max-width: 1180px` cố định → trên màn hình laptop rộng
 *   (1440px, 1536px, 1920px) nội dung bị "bóp hẹp" ở giữa, hai bên trống lớn.
 *
 *   Nay dùng `clamp()`: co giãn liên tục theo bề rộng viewport.
 *   - 1180px → giữ nguyên layout cũ (màn hình nhỏ / tablet ngang)
 *   - 1400px → 1320px
 *   - 1600px → 1440px
 *   - 1920px → 1560px (tận dụng hết màn hình laptop lớn)
 *
 *   `padding` cũng tăng nhẹ trên màn rộng để chữ không sát mép.
 */
.wrap {
    width: 100%;
    max-width: clamp(1180px, 88vw, 1560px);
    margin: 0 auto;
    padding: 0 clamp(20px, 3vw, 40px);
}

/* Màn hình rất rộng (>= 1600px): tăng khoảng cách giữa các khối cho
 * cân đối, tránh nội dung "dính" vào mép. */
@media (min-width: 1600px) {
    .wrap {
        padding: 0 48px;
    }
}

/* --------------------------------- NAV ---------------------------------- */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 60;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    background: color-mix(in srgb, var(--bg) 72%, transparent);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    display: flex;
    align-items: center;
    gap: 18px;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 11px;
    font-weight: 750;
    letter-spacing: -0.03em;
    font-size: 16.5px;
}

.logo-mark {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    color: #fff;
    background: linear-gradient(140deg, var(--primary), #a78bfa 55%, var(--primary-2));
    box-shadow: 0 12px 26px -14px var(--primary);
}

.logo-mark .ico {
    width: 20px;
    height: 20px;
    stroke-width: 2;
}

.logo small {
    display: block;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-mute);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: 14px;
}

.nav-links a {
    padding: 9px 13px;
    border-radius: 10px;
    font-size: 13.6px;
    font-weight: 550;
    color: var(--text-dim);
    transition: background var(--ease), color var(--ease);
}

.nav-links a:hover {
    background: var(--surface-hover);
    color: var(--text);
}

/* Nhóm nút tài khoản (Đăng nhập / Đăng ký / Dashboard / số dư).
 * Nằm trong .nav-links để trên mobile tự động rơi xuống menu thu gọn. */
.nav-auth {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: 14px;
    padding-left: 14px;
    border-left: 1px solid var(--border);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
}

.nav-toggle {
    display: none;
}

/* --------------------------------- HERO --------------------------------- */
.hero {
    display: grid;
    grid-template-columns: 1.06fr 0.94fr;
    align-items: center;
    gap: clamp(40px, 4vw, 76px);
    padding: 74px 0 66px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 7px 14px 7px 10px;
    border-radius: 99px;
    border: 1px solid var(--border-strong);
    background: var(--surface);
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text-dim);
    box-shadow: var(--shadow-sm);
}

.hero-badge .dot {
    color: var(--success);
    box-shadow: 0 0 0 4px var(--success-soft);
}

.hero h1 {
    margin: 22px 0 0;
    font-size: clamp(34px, 4.9vw, 60px);
    line-height: 1.04;
    letter-spacing: -0.045em;
    font-weight: 800;
}

.grad {
    background: linear-gradient(100deg, var(--primary) 0%, #a78bfa 38%, var(--primary-2) 72%, var(--accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p.lead {
    margin-top: 20px;
    max-width: 56ch;
    font-size: 15.5px;
    line-height: 1.7;
    color: var(--text-dim);
}

/* Đoạn text tối ưu SEO — chứa internal links (anchor text nhiều từ khoá) */
.hero .hero-seo-text {
    margin-top: 14px;
    max-width: 62ch;
    font-size: 13.8px;
    line-height: 1.75;
    color: var(--text-mute);
}

.hero .hero-seo-text strong {
    color: var(--text-dim);
    font-weight: 600;
}

.hero .hero-seo-text a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid color-mix(in srgb, var(--primary) 35%, transparent);
    transition: color var(--ease), border-color var(--ease);
}

.hero .hero-seo-text a:hover {
    color: var(--primary-2, var(--primary));
    border-bottom-color: currentColor;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-top: 38px;
    padding-top: 26px;
    border-top: 1px dashed var(--border);
}

.hero-stats div {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.hero-stats strong {
    font-size: 22px;
    letter-spacing: -0.03em;
    font-weight: 750;
}

.hero-stats span {
    font-size: 12.2px;
    color: var(--text-mute);
}

/* --------------------------- PREVIEW (mock UI) --------------------------- */
.hero-visual {
    position: relative;
    perspective: 1200px;
}

.preview {
    position: relative;
    border-radius: 20px;
    border: 1px solid var(--border-strong);
    background: var(--surface-solid);
    background-image: linear-gradient(160deg, var(--surface) 0%, transparent 55%);
    box-shadow: var(--shadow), 0 40px 90px -50px var(--primary);
    padding: 16px;
    transform: rotate(-1.4deg);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.preview:hover {
    transform: rotate(0deg) translateY(-4px);
}

.preview-top {
    display: flex;
    align-items: center;
    gap: 7px;
    padding-bottom: 13px;
    border-bottom: 1px solid var(--border);
}

.preview-top .dots {
    display: flex;
    gap: 5px;
}

.preview-top i {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--surface-3);
}

.preview-top i:first-child {
    background: var(--danger);
}

.preview-top i:nth-child(2) {
    background: var(--warning);
}

.preview-top i:nth-child(3) {
    background: var(--success);
}

.preview-top span {
    margin-left: auto;
    font-size: 10.5px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-mute);
    font-weight: 600;
}

.preview-kpis {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 9px;
    margin-top: 14px;
}

.preview-kpi {
    padding: 11px;
    border-radius: 12px;
    background: var(--surface-2);
    border: 1px solid var(--border);
}

.preview-kpi span {
    display: block;
    font-size: 10px;
    color: var(--text-mute);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.07em;
}

.preview-kpi b {
    display: block;
    margin-top: 5px;
    font-size: 15px;
    font-family: var(--mono);
    letter-spacing: -0.03em;
}

.preview-kpi em {
    font-style: normal;
    font-size: 10.5px;
    font-weight: 700;
    color: var(--success);
}

.preview-chart {
    display: flex;
    align-items: flex-end;
    gap: 7px;
    height: 116px;
    margin-top: 12px;
    padding: 12px;
    border-radius: 12px;
    background: linear-gradient(180deg, var(--surface-2), transparent);
    border: 1px solid var(--border);
}

.preview-chart i {
    flex: 1;
    height: var(--h, 40%);
    border-radius: 6px 6px 3px 3px;
    background: linear-gradient(180deg, var(--primary), rgba(124, 108, 255, 0.25));
    animation: bar-grow 0.9s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.preview-chart i:nth-child(even) {
    background: linear-gradient(180deg, var(--primary-2), rgba(34, 211, 238, 0.22));
}

.preview-bottom {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 12px;
}

.preview-donut {
    width: 74px;
    height: 74px;
    flex: none;
    border-radius: 50%;
    background: conic-gradient(var(--primary) 0 48%, var(--primary-2) 48% 76%,
            var(--accent) 76% 90%, var(--surface-3) 90% 100%);
    position: relative;
}

.preview-donut::after {
    content: "48%";
    position: absolute;
    inset: 15px;
    border-radius: 50%;
    background: var(--surface-solid);
    display: grid;
    place-items: center;
    font-size: 11px;
    font-weight: 700;
    font-family: var(--mono);
}

.preview-legend {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 10.5px;
    color: var(--text-dim);
    flex: 1;
}

.preview-legend span {
    display: flex;
    align-items: center;
    gap: 7px;
}

.preview-legend i {
    width: 8px;
    height: 8px;
    border-radius: 3px;
    background: var(--primary);
}

.preview-legend span:nth-child(2) i {
    background: var(--primary-2);
}

.preview-legend span:nth-child(3) i {
    background: var(--accent);
}

.float-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 10px 14px;
    border-radius: 14px;
    background: var(--surface-solid);
    border: 1px solid var(--border-strong);
    box-shadow: var(--shadow);
    font-size: 12px;
    font-weight: 600;
    animation: float-y 5s ease-in-out infinite;
}

.float-card small {
    display: block;
    font-size: 10.5px;
    font-weight: 500;
    color: var(--text-mute);
}

.float-card .stat-ico {
    width: 30px;
    height: 30px;
    border-radius: 9px;
}

.float-card.f1 {
    top: -18px;
    left: -26px;
}

.float-card.f2 {
    bottom: -20px;
    right: -18px;
    animation-delay: 1.4s;
}

@keyframes float-y {
    50% {
        transform: translateY(-8px);
    }
}

@keyframes bar-grow {
    from {
        height: 6%;
        opacity: 0.3;
    }
}

/* ------------------------------- SECTIONS -------------------------------- */
.section {
    padding: 66px 0;
}

.section-head {
    max-width: 720px;
    margin: 0 auto 38px;
    text-align: center;
}

.eyebrow {
    display: inline-block;
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--primary);
}

.section-head h2 {
    margin-top: 12px;
    font-size: clamp(24px, 3.2vw, 36px);
    letter-spacing: -0.035em;
}

.section-head p {
    margin-top: 12px;
    color: var(--text-dim);
    font-size: 14.6px;
    line-height: 1.7;
}

/* ------------------------------- QUICK NAV ------------------------------- */
.quick-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(16px, 1.5vw, 24px);
}

.quick-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 9px;
    padding: 20px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease),
        background var(--ease);
}

.quick-card::after {
    content: "";
    position: absolute;
    inset: auto -30% -60% auto;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-soft), transparent 70%);
    opacity: 0;
    transition: opacity var(--ease);
}

.quick-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-strong);
    background: var(--surface-hover);
    box-shadow: var(--shadow);
}

.quick-card:hover::after {
    opacity: 1;
}

.quick-card .stat-ico {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    z-index: 1;
}

.quick-card strong {
    font-size: 14.2px;
    letter-spacing: -0.01em;
    z-index: 1;
}

.quick-card p {
    font-size: 12.6px;
    color: var(--text-mute);
    line-height: 1.55;
    z-index: 1;
}

.quick-card .go {
    margin-top: 4px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12.4px;
    font-weight: 650;
    color: var(--primary);
    z-index: 1;
}

.quick-card .go .ico {
    width: 14px;
    height: 14px;
    transition: transform var(--ease);
}

.quick-card:hover .go .ico {
    transform: translate(2px, -2px);
}

/* ------------------------------- FEATURES -------------------------------- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(18px, 1.6vw, 28px);
}

.feature {
    position: relative;
    padding: 26px 24px;
    border-radius: var(--radius-lg);
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.feature .num {
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.08em;
}

.feature h3 {
    margin: 12px 0 8px;
    font-size: 17px;
    letter-spacing: -0.02em;
}

.feature p {
    font-size: 13.4px;
    line-height: 1.7;
    color: var(--text-dim);
}

.feature .rings {
    position: absolute;
    right: -46px;
    top: -46px;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 1px solid var(--border);
    opacity: 0.7;
}

.feature .rings::after {
    content: "";
    position: absolute;
    inset: 26px;
    border-radius: 50%;
    border: 1px solid var(--border);
}

/* ---------------------------------- FAQ ---------------------------------- */
/* Câu hỏi thường gặp — dùng <details>/<summary> để Google đọc được nội dung */
.faq-list {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.faq-item {
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: border-color var(--ease), background var(--ease);
}

.faq-item[open] {
    border-color: var(--border-strong);
    background: var(--surface-2);
}

.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    cursor: pointer;
    list-style: none;
    font-size: 14.4px;
    font-weight: 600;
    color: var(--text);
    user-select: none;
}

/* Ẩn mũi tên mặc định của <summary> (Safari/Firefox) */
.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::marker {
    content: "";
}

.faq-item summary:hover {
    color: var(--primary);
}

.faq-chevron {
    flex-shrink: 0;
    color: var(--text-mute);
    transition: transform var(--ease);
}

.faq-item[open] .faq-chevron {
    transform: rotate(180deg);
}

.faq-body {
    padding: 0 20px 18px;
}

.faq-body p {
    margin: 0;
    font-size: 13.6px;
    line-height: 1.75;
    color: var(--text-dim);
}

/* ------------------------------ PRICE GRID ------------------------------ */
/* Bảng giá dạng lưới thẻ — dùng chung trang chủ & trang /pricing */
.price-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(248px, 1fr));
    gap: 14px;
    text-align: left;
}

.price-item {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 20px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background:
        radial-gradient(420px 150px at 50% -40%, color-mix(in srgb, var(--vc) 13%, transparent), transparent 70%),
        var(--surface);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.price-item:hover {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--vc) 42%, var(--border));
    box-shadow: var(--shadow);
}

/* Thẻ model rẻ nhất — viền nhấn nháy nhẹ */
.price-item--best {
    border-color: color-mix(in srgb, var(--vc) 45%, var(--border));
    box-shadow:
        0 0 0 1px color-mix(in srgb, var(--vc) 22%, transparent),
        var(--shadow-sm);
}

.price-item-head {
    display: flex;
    align-items: center;
    gap: 11px;
    min-width: 0;
}

/* Logo nhà cung cấp — nền theo màu thương hiệu, chữ trắng */
.price-logo {
    width: 40px;
    height: 40px;
    flex: none;
    border-radius: 12px;
    display: grid;
    place-items: center;
    color: #fff;
    background: var(--vc, var(--primary));
    box-shadow: 0 8px 20px -10px var(--vc, var(--primary));
}

.price-logo .ico {
    width: 20px;
    height: 20px;
    fill: currentColor;
    stroke: none;
}

.price-item-id {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.price-item-id strong {
    font-size: 14.4px;
    letter-spacing: -0.015em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.price-item-id code {
    font-family: var(--mono);
    font-size: 11.4px;
    color: var(--text-mute);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.price-flag {
    margin-left: auto;
    flex: none;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 10.4px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--success);
    background: var(--success-soft);
    border: 1px solid rgba(52, 211, 153, 0.28);
}

.price-item-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: wrap;
}

.price-item-price b {
    font-size: 34px;
    font-weight: 800;
    letter-spacing: -0.05em;
    line-height: 1;
    font-family: var(--mono);
    color: var(--text);
}

.price-item-price span {
    font-size: 11.8px;
    color: var(--text-mute);
    font-weight: 600;
}

.price-item-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding-top: 12px;
    margin-top: auto;
    border-top: 1px solid var(--border);
    font-size: 12.4px;
}

/* Số tiền VND tương ứng */
.price-item-vnd {
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.01em;
}

/* Hãng cung cấp — icon nhỏ + tên */
.price-item-vendor {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 11.4px;
    font-weight: 600;
    color: var(--text-mute);
    white-space: nowrap;
}

.price-item-vendor .ico {
    width: 13px;
    height: 13px;
    flex: none;
    fill: currentColor;
    stroke: none;
    opacity: .8;
}

@media (max-width: 520px) {
    .price-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .price-item-price b {
        font-size: 28px;
    }
}

/* ------------------- BẢNG SO SÁNH GIÁ (DuanAPI vs API chính thức) --------
 * ★ Dạng CARD (không dùng <table> 4 cột) ★
 *   Bảng dày bị chật ở màn hình laptop: chữ vỡ dòng, khó quét số.
 *   Mỗi model = 1 hàng lưới 3 vùng: tên | giá so sánh | % tiết kiệm.
 */
.cmp-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 18px;
}

.cmp-row {
    display: grid;
    grid-template-columns: minmax(150px, 1.05fr) minmax(0, 2.1fr) minmax(96px, .62fr);
    align-items: center;
    gap: 18px;
    padding: 16px 20px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    transition: border-color var(--ease), transform var(--ease), box-shadow var(--ease);
}

.cmp-row:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Hàng rẻ nhất — nổi bật */
.cmp-row--top {
    border-color: color-mix(in srgb, #10b981 42%, var(--border));
    background:
        radial-gradient(400px 130px at 6% -60%, color-mix(in srgb, #10b981 14%, transparent), transparent 72%),
        var(--surface);
}

/* ── 1. Tên model ── */
.cmp-id {
    min-width: 0;
}

.cmp-id strong {
    display: block;
    font-size: 14.2px;
    font-weight: 650;
    color: var(--text);
    letter-spacing: -.015em;
    line-height: 1.35;
}

.cmp-vendor {
    display: inline-block;
    margin-top: 4px;
    font-size: 11.2px;
    font-weight: 600;
    color: var(--text-mute);
}

.cmp-flag {
    display: inline-block;
    margin-top: 7px;
    padding: 2px 9px;
    border-radius: 999px;
    font-size: 10.2px;
    font-weight: 700;
    letter-spacing: .05em;
    text-transform: uppercase;
    color: #062b1c;
    background: linear-gradient(135deg, #34d399, #10b981);
}

/* ── 2. Hai mức giá đặt cạnh nhau ── */
.cmp-prices {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.cmp-side {
    min-width: 0;
    padding: 11px 14px;
    border-radius: 11px;
}

.cmp-side--duan {
    border: 1px solid color-mix(in srgb, var(--primary) 32%, transparent);
    background: color-mix(in srgb, var(--primary) 8%, transparent);
}

.cmp-side--off {
    border: 1px dashed var(--border-strong);
    background: var(--surface-2);
}

.cmp-tag {
    display: block;
    font-size: 10.2px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--text-mute);
}

.cmp-side--duan .cmp-tag {
    color: var(--primary);
}

.cmp-num {
    display: block;
    margin-top: 5px;
    font-family: var(--mono);
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -.025em;
    line-height: 1.2;
    color: var(--primary);
}

.cmp-num i {
    font-style: normal;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--text-mute);
}

/* Giá chính thức — gạch ngang để thị giác "giá cũ" */
.cmp-num-off {
    color: var(--text-mute);
    text-decoration: line-through;
    text-decoration-color: color-mix(in srgb, var(--text-mute) 60%, transparent);
    text-decoration-thickness: 1.5px;
}

.cmp-num-sub {
    display: block;
    margin-top: 3px;
    font-size: 11.4px;
    line-height: 1.45;
    color: var(--text-dim);
}

.cmp-note {
    display: block;
    margin-top: 2px;
    font-size: 10.6px;
    color: var(--text-mute);
    opacity: .85;
}

/* Dấu "vs" ở giữa */
.cmp-vs {
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--text-mute);
}

/* ── 3. % tiết kiệm ── */
.cmp-save {
    text-align: right;
    min-width: 0;
}

.cmp-save-badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 999px;
    font-family: var(--mono);
    font-size: 14.5px;
    font-weight: 700;
    color: #062b1c;
    background: linear-gradient(135deg, #34d399, #10b981);
    box-shadow: 0 3px 10px color-mix(in srgb, #10b981 30%, transparent);
}

.cmp-save-label {
    display: inline-block;
    margin-left: 5px;
    font-size: 11.4px;
    font-weight: 600;
    color: var(--text-dim);
}

.cmp-multi {
    display: block;
    margin-top: 5px;
    font-family: var(--mono);
    font-size: 12.4px;
    font-weight: 700;
    color: #10b981;
}

/* Thanh thanh trực quan hoá mức tiết kiệm (giữ lại để dùng khi cần) */
.cmp-bar {
    display: block;
    width: 100%;
    height: 4px;
    margin-top: 8px;
    border-radius: 999px;
    background: var(--surface-hover);
    overflow: hidden;
}

.cmp-bar i {
    display: block;
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, #34d399, #10b981);
}

.cmp-foot {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    margin: 14px 0 0;
    padding: 13px 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    font-size: 12.2px;
    line-height: 1.7;
    color: var(--text-mute);
}

.cmp-foot .ico {
    flex: none;
    margin-top: 2px;
    color: var(--primary);
}

.cmp-foot strong {
    color: var(--text-dim);
}

.cmp-foot-link {
    display: inline-block;
    margin-left: 4px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    white-space: nowrap;
}

.cmp-foot-link:hover {
    text-decoration: underline;
}

/* ── Responsive: gộp cột khi màn hình hẹp ── */
@media (max-width: 900px) {
    .cmp-row {
        grid-template-columns: minmax(0, 1fr) auto;
        gap: 14px;
    }

    .cmp-id {
        grid-column: 1 / -1;
    }

    .cmp-prices {
        grid-column: 1;
    }
}

@media (max-width: 560px) {
    .cmp-row {
        padding: 14px 16px;
        gap: 12px;
    }

    .cmp-prices {
        grid-template-columns: minmax(0, 1fr);
        gap: 8px;
    }

    .cmp-vs {
        display: none;
    }

    .cmp-save {
        text-align: left;
    }
}

/* Vùng highlight "giá rẻ" trên trang chủ */
.cheapest-band {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 28px;
    margin-bottom: 24px;
    padding: 24px 28px;
    border-radius: 20px;
    border: 1px solid color-mix(in srgb, #10b981 32%, var(--border));
    background:
        radial-gradient(560px 200px at 4% -60%, color-mix(in srgb, #10b981 17%, transparent), transparent 70%),
        var(--surface);
    box-shadow: var(--shadow-sm);
}

/* Con số % hero */
.cheapest-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px 26px;
    border-radius: 16px;
    border: 1px solid color-mix(in srgb, #10b981 30%, transparent);
    background: color-mix(in srgb, #10b981 9%, transparent);
    text-align: center;
}

.cheapest-hero b {
    font-family: var(--mono);
    font-size: 44px;
    font-weight: 800;
    letter-spacing: -.045em;
    line-height: 1;
    background: linear-gradient(135deg, #34d399, #10b981);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.cheapest-hero span {
    display: block;
    margin-top: 7px;
    font-size: 11.6px;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--text-dim);
}

.cheapest-band-txt strong {
    display: block;
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -.022em;
    color: var(--text);
    line-height: 1.3;
}

.cheapest-band-txt p {
    margin: 7px 0 0;
    font-size: 13.4px;
    line-height: 1.7;
    color: var(--text-dim);
}

.cheapest-band-kpi {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 16px;
}

.cheapest-kpi {
    padding: 11px 14px;
    border-radius: 11px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    text-align: left;
}

.cheapest-kpi b {
    display: block;
    font-family: var(--mono);
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -.025em;
    color: var(--text);
    line-height: 1.2;
}

.cheapest-kpi span {
    display: block;
    margin-top: 3px;
    font-size: 11.2px;
    line-height: 1.45;
    color: var(--text-mute);
}

@media (max-width: 860px) {
    .cheapest-band {
        grid-template-columns: minmax(0, 1fr);
        gap: 20px;
        padding: 20px;
    }

    .cheapest-hero {
        flex-direction: row;
        gap: 14px;
        padding: 14px 20px;
    }

    .cheapest-hero b {
        font-size: 36px;
    }

    .cheapest-hero span {
        margin-top: 0;
    }
}

@media (max-width: 560px) {
    .cheapest-band-kpi {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 700px) {
    .cheapest-band {
        flex-direction: column;
        align-items: flex-start;
    }

    .cheapest-kpi {
        text-align: left;
    }
}

/* --------------------------------- CTA ---------------------------------- */
.cta-band {
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    flex-wrap: wrap;
    padding: 42px 44px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-strong);
    background:
        radial-gradient(600px 260px at 12% 140%, var(--bg-grad-1), transparent 70%),
        radial-gradient(520px 240px at 88% -40%, var(--bg-grad-2), transparent 70%),
        var(--surface);
    box-shadow: var(--shadow-glow);
}

.cta-band h2 {
    font-size: clamp(22px, 2.8vw, 30px);
    letter-spacing: -0.035em;
}

.cta-band p {
    margin-top: 9px;
    color: var(--text-dim);
    font-size: 14px;
    max-width: 52ch;
}

.cta-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ------------------------------- CODE BLOCK ------------------------------ */
.code-block {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface-solid);
    overflow: hidden;
    max-width: 100%;
}

.code-block-head {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
}

.code-block-head .dots {
    display: flex;
    gap: 5px;
}

.code-block-head .dots i {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--surface-3);
}

.code-block-head .dots i:first-child {
    background: var(--danger);
}

.code-block-head .dots i:nth-child(2) {
    background: var(--warning);
}

.code-block-head .dots i:nth-child(3) {
    background: var(--success);
}

.code-block-head .file {
    font-size: 11.5px;
    color: var(--text-mute);
    font-family: var(--mono);
}

    .code-block-head .copy {
        margin-left: auto;
        padding: 6px 12px;
        min-height: 34px;
        border-radius: 9px;
        font-size: 11.8px;
        font-weight: 600;
        color: var(--text-dim);
        border: 1px solid var(--border);
        background: var(--surface);
        transition: all var(--ease);
    }

.code-block-head .copy:hover {
    color: var(--text);
    border-color: var(--border-strong);
}

.code-block pre {
    margin: 0;
    padding: 16px 18px;
    font-family: var(--mono);
    font-size: 12.4px;
    line-height: 1.75;
    color: var(--text-dim);
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    max-height: 340px;
    tab-size: 2;
}

.code-block pre .c {
    color: var(--text-mute);
}

.code-block pre .k {
    color: #a78bfa;
}

.code-block pre .s {
    color: #34d399;
}

.code-block pre .f {
    color: #22d3ee;
}

.code-block pre .n {
    color: #fbbf24;
}

/* ------------------------------- CHIPS ----------------------------------- */
.chip-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.chip-row span {
    padding: 7px 14px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border);
    background: var(--surface);
    font-size: 12.6px;
    font-weight: 600;
    color: var(--text-dim);
}

/* -------------------------------- FEATURE LIST --------------------------- */
.feature-list {
    display: flex;
    flex-direction: column;
    gap: 11px;
    margin-top: 18px;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13.6px;
    color: var(--text-dim);
    line-height: 1.55;
}

.feature-list .ico {
    width: 17px;
    height: 17px;
    color: var(--success);
    flex: none;
    margin-top: 2px;
}

.feature-list strong {
    color: var(--text);
    font-weight: 650;
}

/* -------------------------------- FOOTER -------------------------------- */
.site-foot {
    padding: 34px 0 46px;
    border-top: 1px solid var(--border);
    margin-top: 64px;
}

.foot-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
    font-size: 12.8px;
    color: var(--text-mute);
}

.foot-links {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}

.foot-links a {
    transition: color var(--ease);
    /* vùng chạm ≥ 34px trên mobile */
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 4px 0;
}

.foot-links a:hover {
    color: var(--text);
}

/* -------------------------------- REVEAL -------------------------------- */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    transition-delay: var(--d, 0ms);
}

.reveal.in {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {

    .reveal,
    .preview,
    .float-card,
    .preview-chart i {
        animation: none !important;
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ------------------------------- RESPONSIVE ------------------------------ */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: minmax(0, 1fr);
        gap: 46px;
        padding-top: 54px;
    }

    .hero-visual {
        max-width: 560px;
    }

    .quick-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .feature-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}

/* ==========================================================================
   NAV THU GỌN SỚM (≤ 940px)
   Ở bề ngang 721–940px, menu dạng hàng không đủ chỗ → tràn ngang.
   Chuyển sang menu thu gọn (nút hamburger) sớm hơn.
   ========================================================================== */
@media (max-width: 940px) {
    .nav-inner {
        position: relative;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        margin-left: 0;
        padding: 12px;
        max-height: calc(100dvh - 64px);
        overflow-y: auto;
        overscroll-behavior: contain;
        background: var(--surface-solid);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 12px 14px;
        font-size: 14.5px;
        /* vùng chạm ≥ 44px */
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    /* Nhóm nút tài khoản chuyển thành hàng dọc trong menu thu gọn */
    .nav-auth {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        margin: 8px 0 0;
        padding: 10px 0 0;
        border-left: 0;
        border-top: 1px solid var(--border);
    }

    .nav-auth .btn {
        width: 100%;
        min-height: 42px;
    }

    .nav-auth form {
        display: flex;
    }

    .nav-auth form .btn {
        width: 100%;
    }

    .nav-toggle {
        display: grid;
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 720px) {
    /* --- Menu mobile: panel trượt xuống, cuộn được nếu cao --- */
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        padding: 12px;
        max-height: calc(100dvh - 64px);
        overflow-y: auto;
        overscroll-behavior: contain;
        background: var(--surface-solid);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 12px 14px;
        font-size: 14.5px;
        /* vùng chạm ≥ 44px */
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    /* Nhóm nút tài khoản chuyển thành hàng dọc trong menu mobile */
    .nav-auth {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        margin: 8px 0 0;
        padding: 10px 0 0;
        border-left: 0;
        border-top: 1px solid var(--border);
    }

    .nav-auth .btn {
        width: 100%;
        min-height: 42px;
    }

    .nav-auth form {
        display: flex;
    }

    .nav-auth form .btn {
        width: 100%;
    }

    .nav-inner {
        height: 60px;
        position: relative;
        gap: 10px;
    }

    .nav-toggle {
        display: grid;
        width: 40px;
        height: 40px;
    }

    /* Logo rút gọn để chừa chỗ cho nút menu */
    .logo {
        gap: 9px;
        font-size: 15px;
    }

    .logo small {
        display: none;
    }

    .logo-mark {
        width: 34px;
        height: 34px;
        border-radius: 11px;
    }

    .hero {
        padding: 34px 0 44px;
    }

    .hero h1 {
        font-size: clamp(28px, 8.4vw, 38px);
    }

    .hero-stats {
        gap: 20px;
    }

    .quick-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .cta-band {
        padding: 26px 20px;
    }

    .float-card.f1 {
        left: -8px;
    }

    .float-card.f2 {
        right: -6px;
    }
}

/* --------------------- MOBILE NHỎ (≤ 420px) ----------------------------- */
@media (max-width: 420px) {
    .wrap {
        padding: 0 16px;
    }

    .hero h1 {
        font-size: clamp(26px, 8.6vw, 34px);
    }

    .hero-stats {
        gap: 14px;
    }

    .hero-stats strong {
        font-size: 19px;
    }

    .btn {
        padding: 11px 16px;
    }

    .btn-lg {
        padding: 13px 20px;
        font-size: 14.5px;
    }

    .cta-band {
        padding: 24px 16px;
    }

    .chip-row span {
        padding: 6px 12px;
        font-size: 12px;
    }

    /* Preview mock UI: bỏ hiệu ứng xoay + rút gọn padding */
    .preview {
        padding: 12px;
        transform: none;
    }

    .preview-kpis {
        gap: 7px;
    }

    /* Code block: nhỏ chữ + giảm padding cho vừa màn hình */
    .code-block pre {
        padding: 13px 14px;
        font-size: 11.6px;
        line-height: 1.7;
    }

    .code-block-head {
        padding: 9px 10px;
    }

    /* Ẩn các float-card trang trí để nội dung không bị che */
    .float-card {
        display: none;
    }
}