/*
 * Trang giới thiệu (domain gốc) — hệ thiết kế riêng, KHÔNG nạp Metronic / Bootstrap.
 *
 * Phong cách hiện đại kiểu châu Âu: lưới Thuỵ Sĩ, chữ lớn khoảng cách chặt, nhiều khoảng trắng, đường kẻ mảnh,
 * nền giấy ấm + mực navy, một màu nhấn cyan lấy từ logo Edu Digital.
 * Tài liệu: docs/ai/design/feature-landing-page.md — ngoại lệ so với quy chuẩn trang quản lý: ui-convention.md §17.
 *
 * - Màu chỉ khai ở :root, phần còn lại dùng var(--ld-*). Tiền tố class: `.ld-`.
 * - Hiệu ứng ở public/assets/js/landing.js. Khi <html> có `ld-motion`, phần tử chờ hiệu ứng được ẩn sẵn
 *   (mục "Trạng thái chờ hiệu ứng" cuối file) để không chớp nội dung trước khi GSAP chạy.
 */

:root {
    --ld-paper: #f3f2ee;
    --ld-paper-soft: #f8f7f4;
    --ld-surface: #ffffff;
    --ld-ink: #0b1526;
    --ld-ink-2: #3d4657;
    --ld-ink-3: #5f6675;
    --ld-line: rgba(11, 21, 38, 0.1);
    --ld-line-strong: rgba(11, 21, 38, 0.2);
    --ld-brand: #1f4b8f;
    --ld-brand-deep: #0f2a57;
    --ld-brand-soft: rgba(31, 75, 143, 0.08);
    --ld-accent: #29b6e0;
    --ld-accent-soft: rgba(41, 182, 224, 0.16);
    --ld-accent-ink: #0b7393;
    --ld-signal: #e0357c;
    --ld-success: #12805c;
    --ld-danger: #c62f4b;
    --ld-night: #0a1222;
    --ld-on-dark: #eef1f6;
    --ld-on-dark-2: rgba(238, 241, 246, 0.66);
    --ld-line-dark: rgba(238, 241, 246, 0.14);
    --ld-shadow-soft: rgba(11, 21, 38, 0.28);

    --ld-font:
        "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
    --ld-max: 1320px;
    --ld-pad: clamp(20px, 4vw, 56px);
    --ld-header-h: 72px;
    --ld-radius: 22px;
    --ld-ease: cubic-bezier(0.2, 0.7, 0.2, 1);
    /* Lề trái của dải cuộn ngang thẳng mép nội dung container. */
    --ld-track-pad: max(var(--ld-pad), calc((100vw - var(--ld-max)) / 2));

    color-scheme: light;
}

/* ───────────── Nền ───────────── */

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: 24px;
}

html.ld-no-scroll {
    overflow: hidden;
}

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

.ld-body {
    margin: 0;
    overflow-x: clip;
    background: var(--ld-paper);
    color: var(--ld-ink);
    font-family: var(--ld-font);
    font-size: 1.0625rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Reset bọc :where() — độ ưu tiên 0, class thành phần (.ld-btn, .ld-pillar__title…) luôn thắng. */
:where(.ld-body) :where(h1, h2, h3, p, ol, ul, dl, dd) {
    margin: 0;
}

:where(.ld-body) :where(a) {
    color: inherit;
    text-decoration: none;
}

:where(.ld-body) :where(img) {
    display: block;
    max-width: 100%;
    height: auto;
}

.ld-body :focus-visible {
    outline: 2px solid var(--ld-accent);
    outline-offset: 3px;
    border-radius: 6px;
}

.ld-skip {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 100;
    padding: 10px 16px;
    border-radius: 999px;
    background: var(--ld-ink);
    color: var(--ld-on-dark);
    transform: translateY(-160%);
    transition: transform 0.25s var(--ld-ease);
}

.ld-skip:focus {
    transform: none;
}

.ld-visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.ld-container {
    width: 100%;
    max-width: calc(var(--ld-max) + 2 * var(--ld-pad));
    margin-inline: auto;
    padding-inline: var(--ld-pad);
}

/* ───────────── Chữ ───────────── */

.ld-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ld-ink-3);
}

.ld-kicker {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 28px;
}

.ld-kicker__index {
    padding: 3px 10px;
    border: 1px solid var(--ld-line-strong);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.ld-h2 {
    max-width: 22ch;
    font-size: clamp(2rem, 1.2rem + 3.2vw, 3.75rem);
    font-weight: 560;
    line-height: 1.1;
    letter-spacing: -0.032em;
}

.ld-lead {
    max-width: 46ch;
    color: var(--ld-ink-2);
    font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.25rem);
    line-height: 1.6;
}

.ld-section {
    padding-block: clamp(88px, 11vw, 168px);
}

.ld-section-head {
    margin-bottom: clamp(48px, 6vw, 88px);
}

.ld-section-head .ld-lead,
.ld-h2 + .ld-lead {
    margin-top: 24px;
}

.ld-section--dark {
    background: var(--ld-night);
    color: var(--ld-on-dark);
}

.ld-section--dark .ld-label,
.ld-section--dark .ld-lead,
.ld-kicker--light .ld-label {
    color: var(--ld-on-dark-2);
}

.ld-section--dark .ld-kicker__index,
.ld-kicker--light .ld-kicker__index {
    border-color: var(--ld-line-dark);
}

@media (min-width: 992px) {
    .ld-section-head--row {
        display: grid;
        grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
        gap: 48px;
        align-items: end;
    }

    .ld-section-head--row .ld-lead {
        margin-top: 0;
    }
}

/* ───────────── Nút & liên kết ───────────── */

.ld-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    height: 52px;
    padding: 0 26px;
    border: 0;
    border-radius: 999px;
    font: inherit;
    font-size: 0.9375rem;
    font-weight: 560;
    white-space: nowrap;
    cursor: pointer;
    transition:
        background-color 0.3s var(--ld-ease),
        color 0.3s var(--ld-ease),
        box-shadow 0.3s var(--ld-ease);
}

/* Nút có ô mũi tên tròn: lề phải hẹp để ô tròn ôm sát mép. */
.ld-btn:has(.ld-btn__icon) {
    padding-right: 8px;
}

.ld-btn__icon {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 0.8125rem;
    transition: transform 0.4s var(--ld-ease);
}

.ld-btn:hover .ld-btn__icon {
    transform: rotate(-45deg);
}

.ld-btn--primary {
    background: var(--ld-ink);
    color: var(--ld-paper);
}

.ld-btn--primary .ld-btn__icon {
    background: var(--ld-accent);
    color: var(--ld-ink);
}

.ld-btn--primary:hover {
    background: var(--ld-brand);
}

.ld-btn--ghost {
    box-shadow: inset 0 0 0 1px var(--ld-line-strong);
    color: var(--ld-ink);
}

.ld-btn--ghost:hover {
    box-shadow: inset 0 0 0 1px var(--ld-ink);
}

.ld-btn--light {
    background: var(--ld-on-dark);
    color: var(--ld-ink);
}

.ld-btn--light .ld-btn__icon {
    background: var(--ld-ink);
    color: var(--ld-on-dark);
}

.ld-btn--light:hover {
    background: var(--ld-surface);
}

.ld-btn--outline-light {
    box-shadow: inset 0 0 0 1px var(--ld-line-dark);
    color: var(--ld-on-dark);
}

.ld-btn--outline-light:hover {
    box-shadow: inset 0 0 0 1px var(--ld-on-dark);
}

.ld-btn--sm {
    height: 40px;
    padding: 0 18px;
    font-size: 0.875rem;
}

.ld-btn--block {
    width: 100%;
    justify-content: space-between;
    padding-left: 24px;
}

.ld-arrow-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9375rem;
    font-weight: 560;
}

.ld-arrow-link i {
    font-size: 0.8125rem;
    transition: transform 0.35s var(--ld-ease);
}

.ld-arrow-link:hover i {
    transform: translateX(4px);
}

.ld-icon-diagonal,
.ld-arrow-link:hover .ld-icon-diagonal {
    transform: rotate(-45deg);
}

.ld-arrow-link:hover .ld-icon-diagonal {
    transform: rotate(-45deg) translateX(4px);
}

/* Font Awesome 6 Free (solid) — chỉ phần icon trang này dùng; font đã có sẵn trong bundle Metronic. */
@font-face {
    font-family: "Font Awesome 6 Free";
    font-style: normal;
    font-weight: 900;
    font-display: block;
    src: url("../plugins/global/fonts/@fortawesome/fa-solid-900.woff2")
        format("woff2");
}

.fa-solid {
    display: inline-block;
    font-family: "Font Awesome 6 Free";
    font-style: normal;
    font-weight: 900;
    line-height: 1;
    -webkit-font-smoothing: antialiased;
    text-rendering: auto;
}

.fa-arrow-right::before {
    content: "\f061";
}
.fa-check::before {
    content: "\f00c";
}
.fa-plus::before {
    content: "\2b";
}
.fa-xmark::before {
    content: "\f00d";
}
.fa-phone::before {
    content: "\f095";
}
.fa-envelope::before {
    content: "\f0e0";
}
.fa-location-dot::before {
    content: "\f3c5";
}
.fa-right-to-bracket::before {
    content: "\f2f6";
}
.fa-building-columns::before {
    content: "\f19c";
}
.fa-school::before {
    content: "\f549";
}
.fa-screwdriver-wrench::before {
    content: "\f7d9";
}
.fa-chalkboard-user::before {
    content: "\f51c";
}
.fa-language::before {
    content: "\f1ab";
}
.fa-diagram-project::before {
    content: "\f542";
}
.fa-database::before {
    content: "\f1c0";
}
.fa-shield-halved::before {
    content: "\f3ed";
}
.fa-calendar-check::before {
    content: "\f274";
}
.fa-headset::before {
    content: "\f590";
}
.fa-newspaper::before {
    content: "\f1ea";
}

/* ───────────── Header ───────────── */

.ld-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 50;
    height: var(--ld-header-h);
    transition:
        transform 0.5s var(--ld-ease),
        background-color 0.3s,
        box-shadow 0.3s;
}

.ld-header__brand {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.ld-header__brand-text {
    font-size: 1.5rem;
    font-weight: 560;
    letter-spacing: -0.03em;
    color: var(--ld-ink);
    text-transform: uppercase;
}

.ld-header.is-scrolled {
    background: rgba(243, 242, 238, 0.82);
    box-shadow: 0 1px 0 var(--ld-line);
    -webkit-backdrop-filter: saturate(1.6) blur(16px);
    backdrop-filter: saturate(1.6) blur(16px);
}

.ld-header.is-hidden {
    transform: translateY(-100%);
}

.ld-header.is-open {
    background: var(--ld-paper);
    transform: none;
}

.ld-header__inner {
    display: flex;
    align-items: center;
    gap: 24px;
    height: 100%;
}

.ld-header__brand {
    flex: none;
}

.ld-header__brand img {
    width: auto;
    height: 32px;
}

.ld-nav {
    display: none;
}

.ld-header.is-open .ld-nav {
    position: fixed;
    inset: var(--ld-header-h) 0 0;
    display: flex;
    flex-direction: column;
    padding: 16px var(--ld-pad) 32px;
    overflow-y: auto;
    background: var(--ld-paper);
}

.ld-nav__link {
    padding: 14px 0;
    border-bottom: 1px solid var(--ld-line);
    font-size: 2rem;
    font-weight: 560;
    letter-spacing: -0.03em;
}

.ld-nav__extra {
    display: grid;
    gap: 10px;
    margin-top: auto;
    padding-top: 32px;
}

.ld-header__actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.ld-header__login,
.ld-header__actions .ld-btn--sm {
    display: none;
}

.ld-header__toggle {
    display: grid;
    place-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    border: 0;
    border-radius: 50%;
    box-shadow: inset 0 0 0 1px var(--ld-line-strong);
    background: transparent;
    color: var(--ld-ink);
    cursor: pointer;
}

.ld-header__toggle span {
    display: block;
    width: 18px;
    height: 1.5px;
    background: currentColor;
    transition: transform 0.35s var(--ld-ease);
}

.ld-header.is-open .ld-header__toggle span:first-child {
    transform: translateY(3.75px) rotate(45deg);
}

.ld-header.is-open .ld-header__toggle span:last-child {
    transform: translateY(-3.75px) rotate(-45deg);
}

@media (min-width: 576px) {
    .ld-header__actions .ld-btn--sm {
        display: inline-flex;
    }
}

@media (min-width: 992px) {
    .ld-header__toggle,
    .ld-nav__extra {
        display: none;
    }

    .ld-nav {
        display: flex;
        gap: 32px;
        margin-inline: auto;
    }

    .ld-nav__link {
        position: relative;
        padding: 6px 0;
        border: 0;
        color: var(--ld-ink-2);
        font-size: 0.9375rem;
        font-weight: 500;
        letter-spacing: 0;
        transition: color 0.25s;
    }

    .ld-nav__link::after {
        content: "";
        position: absolute;
        inset: auto 0 0;
        height: 1px;
        background: currentColor;
        transform: scaleX(0);
        transform-origin: 100% 50%;
        transition: transform 0.4s var(--ld-ease);
    }

    .ld-nav__link:hover {
        color: var(--ld-ink);
    }

    .ld-nav__link:hover::after {
        transform: scaleX(1);
        transform-origin: 0 50%;
    }

    .ld-header__actions {
        margin-left: 0;
    }

    .ld-header__login {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        height: 40px;
        padding: 0 12px;
        color: var(--ld-ink-2);
        font-size: 0.9375rem;
        font-weight: 500;
        transition: color 0.25s;
    }

    .ld-header__login:hover {
        color: var(--ld-ink);
    }
}

/* ───────────── Hero ───────────── */

.ld-hero {
    position: relative;
    isolation: isolate;
    overflow: clip;
    padding-top: calc(var(--ld-header-h) + clamp(40px, 7vw, 104px));
    padding-bottom: clamp(56px, 7vw, 96px);
}

/* Quầng sáng cyan góc phải — nhắc màu logo. */
.ld-hero::after {
    content: "";
    position: absolute;
    z-index: -1;
    top: -24vw;
    right: -20vw;
    width: 64vw;
    height: 64vw;
    border-radius: 50%;
    background: radial-gradient(
        closest-side,
        var(--ld-accent-soft),
        transparent
    );
    pointer-events: none;
}

.ld-guides {
    position: absolute;
    inset: 0;
    z-index: -1;
    pointer-events: none;
}

.ld-guides__inner {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    height: 100%;
}

.ld-guides__inner span {
    border-left: 1px solid var(--ld-line);
    transform-origin: 50% 0;
    opacity: 0.6;
}

.ld-guides__inner span:last-child {
    border-right: 1px solid var(--ld-line);
}

.ld-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 7px 14px 7px 10px;
    border-radius: 999px;
    box-shadow: inset 0 0 0 1px var(--ld-line-strong);
    background: rgba(255, 255, 255, 0.55);
    color: var(--ld-ink-2);
    font-size: 0.8125rem;
    font-weight: 500;
}

.ld-eyebrow__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--ld-signal);
    box-shadow: 0 0 0 4px rgba(224, 53, 124, 0.16);
}

.ld-hero__title {
    margin-top: 28px;
    font-size: clamp(2.6rem, 1rem + 6.4vw, 7rem);
    font-weight: 560;
    line-height: 1.06;
    letter-spacing: -0.045em;
}

.ld-hero__line {
    display: block;
}

.ld-hero__line + .ld-hero__line {
    color: var(--ld-ink-3);
}

/* Khung cắt của SplitText (landing.js gắn class) — nới để dấu tiếng Việt (ệ, ổ, ự) không bị cắt. */
.ld-mask {
    padding-block: 0.14em 0.08em;
    margin-block: -0.14em -0.08em;
}

.ld-hero__grid {
    display: grid;
    gap: 56px;
    margin-top: clamp(40px, 5vw, 64px);
}

.ld-hero__lead {
    max-width: 34ch;
    color: var(--ld-ink-2);
    font-size: clamp(1.125rem, 1rem + 0.45vw, 1.375rem);
    line-height: 1.5;
}

.ld-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 36px;
}

.ld-hero__visual {
    position: relative;
}

@media (min-width: 992px) {
    .ld-hero__grid {
        grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
        align-items: start;
        gap: clamp(40px, 5vw, 88px);
    }

    .ld-hero__copy {
        padding-top: 8px;
    }
}

/* Ảnh minh hoạ giao diện */
.ld-mock {
    overflow: hidden;
    border-radius: 18px;
    background: var(--ld-surface);
    box-shadow:
        0 0 0 1px var(--ld-line),
        0 30px 60px -24px var(--ld-shadow-soft),
        0 64px 120px -48px rgba(31, 75, 143, 0.32);
    color: var(--ld-ink);
    font-size: 12px;
    line-height: 1.4;
}

.ld-mock__chrome {
    display: flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 14px;
    border-bottom: 1px solid var(--ld-line);
    background: var(--ld-paper);
}

.ld-mock__chrome > span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--ld-line-strong);
}

.ld-mock__url {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-inline: auto;
    padding: 4px 12px;
    border-radius: 999px;
    background: var(--ld-surface);
    box-shadow: 0 0 0 1px var(--ld-line);
    color: var(--ld-ink-3);
    font-size: 11px;
}

.ld-mock__url i {
    color: var(--ld-success);
    font-size: 9px;
}

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

.ld-mock__side {
    display: none;
}

.ld-mock__brand {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 8px 14px;
    font-size: 12.5px;
    font-weight: 650;
}

.ld-mock__brand img {
    width: 20px;
    height: 20px;
}

.ld-mock__menu {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 7px 8px;
    border-radius: 8px;
    color: var(--ld-ink-2);
}

.ld-mock__menu span {
    width: 14px;
    height: 14px;
    border-radius: 4px;
    background: var(--ld-line);
}

.ld-mock__menu.is-active {
    background: var(--ld-brand-soft);
    color: var(--ld-brand);
    font-weight: 600;
}

.ld-mock__menu.is-active span {
    background: var(--ld-brand);
}

.ld-mock__main {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 18px;
}

.ld-mock__head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.ld-mock__head small,
.ld-mock__kpi small,
.ld-mock__chart small {
    display: block;
    color: var(--ld-ink-3);
    font-size: 10.5px;
}

.ld-mock__head strong {
    font-size: 15px;
    font-weight: 650;
    letter-spacing: -0.01em;
}

.ld-mock__chip {
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--ld-accent-soft);
    color: var(--ld-accent-ink);
    font-size: 10.5px;
    font-weight: 600;
    white-space: nowrap;
}

.ld-mock__kpis {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.ld-mock__kpi,
.ld-mock__chart {
    padding: 12px;
    border-radius: 12px;
    box-shadow: inset 0 0 0 1px var(--ld-line);
}

.ld-mock__kpi strong {
    display: block;
    margin-top: 4px;
    font-size: 18px;
    font-weight: 650;
    letter-spacing: -0.02em;
}

.ld-mock__kpi em {
    color: var(--ld-success);
    font-size: 10.5px;
    font-style: normal;
    font-weight: 600;
}

.ld-mock__bars {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    height: 92px;
    margin-top: 12px;
}

.ld-mock__col {
    flex: 1;
    border-radius: 4px 4px 2px 2px;
    background: rgba(31, 75, 143, 0.16);
}

.ld-mock__col--1 {
    height: 32%;
}
.ld-mock__col--2 {
    height: 44%;
}
.ld-mock__col--3 {
    height: 38%;
}
.ld-mock__col--4 {
    height: 56%;
}
.ld-mock__col--5 {
    height: 50%;
}
.ld-mock__col--6 {
    height: 68%;
}
.ld-mock__col--7 {
    height: 62%;
}
.ld-mock__col--8 {
    height: 78%;
}
.ld-mock__col--9 {
    height: 72%;
}
.ld-mock__col--10 {
    height: 86%;
}
.ld-mock__col--11 {
    height: 80%;
}

.ld-mock__col--12 {
    height: 96%;
    background: var(--ld-brand);
}

.ld-mock__rows {
    display: none;
}

.ld-mock__row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-top: 1px solid var(--ld-line);
}

.ld-mock__row em {
    margin-left: auto;
    color: var(--ld-ink-3);
    font-style: normal;
}

.ld-mock__time {
    padding: 2px 7px;
    border-radius: 6px;
    background: var(--ld-paper);
    font-variant-numeric: tabular-nums;
    font-weight: 600;
}

.ld-mock-float {
    position: absolute;
    right: 16px;
    bottom: -24px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px 12px 12px;
    border-radius: 14px;
    background: var(--ld-ink);
    box-shadow: 0 24px 48px -16px rgba(11, 21, 38, 0.5);
    color: var(--ld-on-dark);
    font-size: 13px;
    line-height: 1.35;
}

.ld-mock-float strong {
    display: block;
    font-weight: 600;
}

.ld-mock-float small {
    color: var(--ld-on-dark-2);
    font-size: 12px;
}

.ld-mock-float__icon {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--ld-accent);
    color: var(--ld-ink);
    font-size: 13px;
}

@media (min-width: 576px) {
    .ld-mock__body {
        grid-template-columns: 148px minmax(0, 1fr);
    }

    .ld-mock__side {
        display: flex;
        flex-direction: column;
        gap: 2px;
        padding: 16px 10px;
        border-right: 1px solid var(--ld-line);
        background: var(--ld-paper-soft);
    }

    .ld-mock__rows {
        display: block;
    }
}

@media (min-width: 992px) {
    .ld-mock-float {
        right: auto;
        bottom: 56px;
        left: -40px;
    }
}

/* Số liệu */
.ld-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px 24px;
    margin-top: clamp(72px, 9vw, 120px);
    padding: 28px 0 0;
    border-top: 1px solid var(--ld-line-strong);
    list-style: none;
}

.ld-stats__item {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ld-stats__value {
    font-size: clamp(2.25rem, 1.5rem + 2.4vw, 3.5rem);
    font-weight: 560;
    font-variant-numeric: tabular-nums;
    line-height: 1;
    letter-spacing: -0.045em;
}

.ld-stats__label {
    max-width: 26ch;
    color: var(--ld-ink-3);
    font-size: 0.875rem;
    line-height: 1.45;
}

@media (min-width: 992px) {
    .ld-stats {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

/* ───────────── Đơn vị đồng hành (chạy ngang) ───────────── */

.ld-partners {
    padding-block: clamp(40px, 5vw, 64px);
    border-block: 1px solid var(--ld-line);
}

.ld-partners .ld-label {
    margin-bottom: 24px;
}

.ld-marquee {
    overflow: hidden;
}

.ld-marquee__track {
    display: flex;
    padding-inline: var(--ld-track-pad);
}

.ld-marquee__list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 0;
    margin: 0;
    padding: 0;
    list-style: none;
}

.ld-marquee__list[aria-hidden="true"] {
    display: none;
}

.ld-marquee__item {
    display: flex;
    align-items: center;
    color: var(--ld-ink-2);
    font-size: clamp(1.125rem, 1rem + 0.8vw, 1.75rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    white-space: nowrap;
}

.ld-marquee__item::after {
    content: "";
    flex: none;
    width: 6px;
    height: 6px;
    margin-inline: clamp(28px, 3.5vw, 56px);
    border-radius: 50%;
    background: var(--ld-accent);
}

/* JS đang chạy vòng: một hàng, hai bản nối nhau, mờ hai mép. */
.ld-partners.is-running .ld-marquee {
    -webkit-mask-image: linear-gradient(
        90deg,
        transparent,
        #000 8%,
        #000 92%,
        transparent
    );
    mask-image: linear-gradient(
        90deg,
        transparent,
        #000 8%,
        #000 92%,
        transparent
    );
}

.ld-partners.is-running .ld-marquee__track {
    width: max-content;
    padding-inline: 0;
}

.ld-partners.is-running .ld-marquee__list {
    flex: none;
    flex-wrap: nowrap;
}

.ld-partners.is-running .ld-marquee__list[aria-hidden="true"] {
    display: flex;
}

/* ───────────── 01 · Vì sao ───────────── */

.ld-split {
    display: grid;
    gap: 8px;
}

.ld-split .ld-kicker {
    margin-bottom: 20px;
}

.ld-statement {
    font-size: clamp(1.75rem, 1.1rem + 2.6vw, 3.25rem);
    font-weight: 500;
    line-height: 1.22;
    letter-spacing: -0.028em;
}

.ld-pillars {
    display: grid;
    gap: 48px;
    margin-top: clamp(72px, 9vw, 128px);
    padding: 0;
    list-style: none;
}

.ld-pillar {
    position: relative;
    padding-top: 28px;
}

.ld-rule {
    position: absolute;
    inset: 0 0 auto;
    height: 1px;
    background: var(--ld-ink);
    transform-origin: 0 50%;
}

.ld-pillar__num {
    display: block;
    color: var(--ld-ink-3);
    font-size: 0.8125rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.ld-pillar__title {
    margin-top: 40px;
    font-size: clamp(1.375rem, 1.2rem + 0.6vw, 1.75rem);
    font-weight: 560;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.ld-pillar__text {
    max-width: 34ch;
    margin-top: 14px;
    color: var(--ld-ink-2);
}

@media (min-width: 992px) {
    .ld-split {
        grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
        gap: 32px;
    }

    .ld-split .ld-kicker {
        margin-bottom: 0;
        padding-top: 0.9em;
        align-self: start;
    }

    .ld-pillars {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 32px;
    }
}

/* ───────────── 02 · Vấn đề → giải pháp ───────────── */

.ld-challenges {
    background: var(--ld-surface);
}

.ld-challenges__list {
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--ld-line-strong);
    list-style: none;
}

.ld-challenge {
    display: grid;
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 12px 16px;
    padding: 28px 0;
    border-bottom: 1px solid var(--ld-line);
}

.ld-challenge__num {
    padding-top: 0.45em;
    color: var(--ld-ink-3);
    font-size: 0.8125rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.ld-challenge__problem {
    font-size: clamp(1.25rem, 1rem + 1vw, 1.875rem);
    font-weight: 500;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

/* Gạch ngang vẽ dần (JS tăng background-size) — chạy qua từng dòng khi câu xuống dòng. */
.ld-challenge__problem span {
    background-image: linear-gradient(currentColor, currentColor);
    background-repeat: no-repeat;
    background-position: 0 58%;
    background-size: 0% 0.07em;
}

.ld-challenge__arrow {
    display: none;
}

.ld-challenge__solution {
    grid-column: 2;
    padding-left: 14px;
    border-left: 2px solid var(--ld-accent);
    color: var(--ld-brand);
    font-size: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
    font-weight: 560;
    line-height: 1.35;
}

@media (min-width: 992px) {
    .ld-challenge {
        grid-template-columns: 64px minmax(0, 1fr) 96px minmax(0, 1fr);
        align-items: center;
        padding: 32px 0;
    }

    .ld-challenge__num {
        padding-top: 0;
    }

    .ld-challenge__arrow {
        display: grid;
        place-items: center;
        width: 52px;
        height: 52px;
        border-radius: 50%;
        box-shadow: inset 0 0 0 1px var(--ld-line-strong);
        color: var(--ld-ink-3);
        justify-self: center;
    }

    .ld-challenge__solution {
        grid-column: auto;
        padding-left: 0;
        border-left: 0;
    }
}

/* ───────────── 03 · Phân hệ (cuộn ngang) ───────────── */

.ld-modules {
    padding-block: 0;
}

.ld-modules__pin {
    padding-block: clamp(88px, 11vw, 140px);
}

.ld-modules__head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 32px;
    margin-bottom: clamp(40px, 5vw, 64px);
}

.ld-modules__head .ld-section-head {
    margin-bottom: 0;
}

.ld-modules__progress {
    display: none;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
    flex: none;
}

.ld-modules.is-pinned .ld-modules__progress {
    display: flex;
}

.ld-modules__count {
    color: var(--ld-ink-3);
    font-size: 0.875rem;
    font-variant-numeric: tabular-nums;
}

.ld-modules__count b {
    color: var(--ld-ink);
    font-weight: 600;
}

.ld-modules__bar {
    position: relative;
    width: 200px;
    height: 2px;
    overflow: hidden;
    background: var(--ld-line);
}

.ld-modules__bar span {
    position: absolute;
    inset: 0;
    background: var(--ld-ink);
    transform: scaleX(0);
    transform-origin: 0 50%;
}

.ld-modules__viewport {
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: var(--ld-track-pad);
    scrollbar-width: none;
}

.ld-modules__viewport::-webkit-scrollbar {
    display: none;
}

.ld-modules.is-pinned .ld-modules__viewport {
    overflow: hidden;
    scroll-snap-type: none;
}

.ld-modules__track {
    display: flex;
    gap: 20px;
    width: max-content;
    margin: 0;
    padding: 4px var(--ld-track-pad) 24px;
    list-style: none;
}

.ld-module {
    flex: none;
    width: min(84vw, 380px);
    scroll-snap-align: start;
}

.ld-module__body {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 28px;
    border-radius: var(--ld-radius);
    background: var(--ld-surface);
    box-shadow: 0 0 0 1px var(--ld-line);
    transition: box-shadow 0.35s var(--ld-ease);
}

.ld-module:hover .ld-module__body {
    box-shadow:
        0 0 0 1px var(--ld-line-strong),
        0 28px 56px -28px var(--ld-shadow-soft);
}

.ld-module__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.ld-module__code {
    padding: 5px 10px;
    border-radius: 999px;
    background: var(--ld-brand-soft);
    color: var(--ld-brand);
    font-size: 0.75rem;
    font-weight: 650;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.ld-module__num {
    color: var(--ld-ink-3);
    font-size: 0.8125rem;
    font-variant-numeric: tabular-nums;
}

.ld-module__name {
    margin-top: 40px;
    font-size: 1.625rem;
    font-weight: 560;
    line-height: 1.15;
    letter-spacing: -0.025em;
}

.ld-module__text {
    margin-top: 14px;
    color: var(--ld-ink-2);
    font-size: 0.975rem;
    line-height: 1.55;
}

.ld-module__list {
    display: grid;
    gap: 10px;
    margin-top: 24px;
    padding: 20px 0 0;
    border-top: 1px solid var(--ld-line);
    font-size: 0.9375rem;
    list-style: none;
}

.ld-module__list li {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.ld-module__list i {
    color: var(--ld-accent-ink);
    font-size: 0.75em;
}

.ld-module .ld-arrow-link {
    margin-top: auto;
    padding-top: 28px;
}

.ld-module--extra .ld-module__body {
    background: var(--ld-ink);
    box-shadow: none;
    color: var(--ld-on-dark);
}

.ld-module--extra .ld-module__code {
    background: rgba(238, 241, 246, 0.1);
    color: var(--ld-on-dark);
}

.ld-module--extra .ld-module__num,
.ld-module--extra .ld-module__text {
    color: var(--ld-on-dark-2);
}

.ld-module--extra .ld-btn {
    align-self: flex-start;
    margin-top: auto;
}

.ld-module--extra .ld-module__text {
    margin-bottom: 28px;
}

/* Ghim chỉ bật ở màn rộng đủ cao (khớp điều kiện trong landing.js). */
@media (min-width: 992px) and (min-height: 680px) {
    .ld-modules.is-pinned .ld-modules__pin {
        display: flex;
        flex-direction: column;
        justify-content: center;
        min-height: 100vh;
        padding-block: 88px 56px;
    }
}

/* ───────────── 04 · Nền tảng (nền tối) ───────────── */

.ld-platform__grid {
    display: grid;
    gap: 64px;
}

.ld-platform__stat {
    display: flex;
    align-items: baseline;
    gap: 20px;
    margin-top: 48px;
    padding-block: 28px;
    border-block: 1px solid var(--ld-line-dark);
}

.ld-platform__value {
    color: var(--ld-accent);
    font-size: clamp(3.5rem, 2rem + 5vw, 6.5rem);
    font-weight: 560;
    font-variant-numeric: tabular-nums;
    line-height: 0.9;
    letter-spacing: -0.05em;
}

.ld-platform__label {
    max-width: 18ch;
    color: var(--ld-on-dark-2);
}

.ld-layers {
    display: grid;
    gap: 4px;
    margin-top: 32px;
    padding: 0;
    list-style: none;
}

.ld-layer {
    display: grid;
    grid-template-columns: 44px 32px minmax(0, 1fr);
    align-items: center;
    gap: 14px;
    padding: 12px 0;
}

.ld-layer__icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(238, 241, 246, 0.06);
    box-shadow: inset 0 0 0 1px var(--ld-line-dark);
    color: var(--ld-accent);
}

.ld-layer__num {
    color: var(--ld-on-dark-2);
    font-size: 0.8125rem;
    font-variant-numeric: tabular-nums;
}

.ld-layer__title {
    font-size: 1.125rem;
    font-weight: 520;
    letter-spacing: -0.01em;
}

/* Ba tầng xếp chồng nhìn nghiêng (isometric) */
.ld-stack {
    position: relative;
    height: clamp(360px, 46vw, 560px);
}

.ld-stack::before {
    content: "";
    position: absolute;
    inset: 15%;
    border-radius: 50%;
    background: radial-gradient(
        closest-side,
        rgba(41, 182, 224, 0.28),
        transparent
    );
    filter: blur(20px);
}

.ld-stack__level {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    pointer-events: none;
}

.ld-stack__level--3 {
    transform: translateY(clamp(64px, 8vw, 112px));
}

.ld-stack__level--1 {
    transform: translateY(clamp(-112px, -8vw, -64px));
}

.ld-stack__plate {
    display: grid;
    place-items: center;
    width: clamp(190px, 25vw, 310px);
    aspect-ratio: 1;
    border-radius: 34px;
    transform: rotateX(58deg) rotateZ(-45deg);
}

.ld-stack__tag {
    color: rgba(238, 241, 246, 0.9);
    font-size: clamp(2rem, 3vw, 3rem);
}

.ld-stack__level--3 .ld-stack__plate {
    background:
        linear-gradient(rgba(238, 241, 246, 0.07) 1px, transparent 1px) 0 0 /
            22px 22px,
        linear-gradient(90deg, rgba(238, 241, 246, 0.07) 1px, transparent 1px) 0
            0 / 22px 22px,
        linear-gradient(135deg, #18263f, #0d1729);
    box-shadow:
        inset 0 0 0 1px rgba(238, 241, 246, 0.14),
        0 48px 64px -16px rgba(0, 0, 0, 0.6);
}

.ld-stack__level--2 .ld-stack__plate {
    background: linear-gradient(
        135deg,
        rgba(37, 88, 166, 0.96),
        rgba(18, 46, 96, 0.96)
    );
    box-shadow:
        inset 0 0 0 1px rgba(238, 241, 246, 0.2),
        0 36px 56px -16px rgba(0, 0, 0, 0.55);
}

.ld-stack__level--1 .ld-stack__plate {
    background: linear-gradient(
        135deg,
        rgba(41, 182, 224, 0.88),
        rgba(31, 110, 200, 0.72)
    );
    box-shadow:
        inset 0 0 0 1px rgba(238, 241, 246, 0.4),
        0 36px 56px -16px rgba(0, 0, 0, 0.45);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

@media (min-width: 992px) {
    .ld-platform__grid {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
        align-items: center;
    }
}

/* ───────────── 05 · Giải pháp theo loại hình ───────────── */

.ld-segments__list {
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--ld-line-strong);
    list-style: none;
}

.ld-segment {
    position: relative;
    isolation: isolate;
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) 44px;
    align-items: center;
    gap: 10px 18px;
    padding: 28px 0;
    border-bottom: 1px solid var(--ld-line);
    transition:
        color 0.4s var(--ld-ease),
        padding 0.5s var(--ld-ease);
}

/* Nền mực trượt lên khi rê chuột. */
.ld-segment::before {
    content: "";
    position: absolute;
    inset: 0 calc(-1 * var(--ld-pad));
    z-index: -1;
    background: var(--ld-ink);
    transform: scaleY(0);
    transform-origin: 50% 100%;
    transition: transform 0.5s var(--ld-ease);
}

.ld-segment:hover,
.ld-segment:focus-visible {
    color: var(--ld-on-dark);
}

.ld-segment:hover::before,
.ld-segment:focus-visible::before {
    transform: scaleY(1);
}

.ld-segment__num {
    display: none;
    color: var(--ld-ink-3);
    font-size: 0.8125rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.ld-segment__icon,
.ld-segment__arrow {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    box-shadow: inset 0 0 0 1px var(--ld-line-strong);
    transition:
        background-color 0.4s var(--ld-ease),
        color 0.4s var(--ld-ease),
        transform 0.5s var(--ld-ease),
        box-shadow 0.4s;
}

.ld-segment__name {
    font-size: clamp(1.25rem, 1rem + 1vw, 2rem);
    font-weight: 540;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.ld-segment__text {
    grid-column: 2 / -1;
    color: var(--ld-ink-2);
    font-size: 0.975rem;
    transition: color 0.4s var(--ld-ease);
}

.ld-segment__arrow {
    grid-row: 1;
    grid-column: 3;
}

.ld-segment:hover .ld-segment__num,
.ld-segment:hover .ld-segment__text {
    color: var(--ld-on-dark-2);
}

.ld-segment:hover .ld-segment__icon {
    background: var(--ld-accent);
    box-shadow: none;
    color: var(--ld-ink);
}

.ld-segment:hover .ld-segment__arrow {
    background: var(--ld-on-dark);
    box-shadow: none;
    color: var(--ld-ink);
    transform: rotate(-45deg);
}

@media (min-width: 992px) {
    .ld-segment {
        grid-template-columns: 56px 56px minmax(0, 1.15fr) minmax(0, 1fr) 56px;
        gap: 24px;
        padding: 36px 0;
    }

    .ld-segment:hover {
        padding-inline: 20px;
    }

    .ld-segment__num {
        display: block;
    }

    .ld-segment__text,
    .ld-segment__arrow {
        grid-row: auto;
        grid-column: auto;
    }

    .ld-segment__arrow {
        justify-self: end;
    }
}

/* ───────────── 06 · Đồng hành ───────────── */

.ld-support {
    padding-top: 0;
}

.ld-cards {
    display: grid;
    gap: 20px;
}

.ld-card {
    display: flex;
    flex-direction: column;
    min-height: 300px;
    padding: 32px;
    border-radius: var(--ld-radius);
    background: var(--ld-surface);
    box-shadow: 0 0 0 1px var(--ld-line);
}

.ld-card__icon {
    display: grid;
    place-items: center;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: var(--ld-brand-soft);
    color: var(--ld-brand);
    font-size: 1.125rem;
}

.ld-card__title {
    margin-top: 40px;
    font-size: 1.5rem;
    font-weight: 560;
    letter-spacing: -0.02em;
}

.ld-card__text {
    margin-top: 12px;
    color: var(--ld-ink-2);
}

.ld-card .ld-arrow-link {
    margin-top: auto;
    padding-top: 32px;
}

@media (min-width: 992px) {
    .ld-cards {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

/* ───────────── 07 · Liên hệ ───────────── */

.ld-contact__panel {
    padding-block: clamp(96px, 12vw, 176px);
    background:
        radial-gradient(
            120% 80% at 88% 0%,
            rgba(41, 182, 224, 0.34),
            transparent 60%
        ),
        linear-gradient(160deg, var(--ld-brand), var(--ld-brand-deep));
    color: var(--ld-on-dark);
}

.ld-contact__title {
    max-width: 15ch;
    font-size: clamp(2.5rem, 1rem + 6vw, 6.5rem);
    font-weight: 560;
    line-height: 1.04;
    letter-spacing: -0.045em;
}

.ld-contact__text {
    max-width: 44ch;
    margin-top: 28px;
    color: var(--ld-on-dark-2);
    font-size: clamp(1.125rem, 1rem + 0.4vw, 1.375rem);
}

.ld-contact__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 44px;
}

.ld-contact__details {
    display: grid;
    gap: 32px;
    margin-top: clamp(64px, 8vw, 112px);
    padding-top: 32px;
    border-top: 1px solid var(--ld-line-dark);
}

.ld-contact__details dt {
    color: var(--ld-on-dark-2);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.ld-contact__details dd,
.ld-contact__details dd a {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-top: 10px;
}

.ld-contact__details dd a {
    margin-top: 0;
}

.ld-contact__details dd i {
    color: var(--ld-accent);
    font-size: 0.875rem;
}

.ld-contact__details dd a:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
}

@media (min-width: 992px) {
    .ld-contact__details {
        grid-template-columns: 1.4fr 1fr 1fr;
    }
}

/* ───────────── Footer ───────────── */

.ld-footer {
    overflow: clip;
    padding-top: clamp(64px, 8vw, 104px);
    background: var(--ld-night);
    color: var(--ld-on-dark-2);
    font-size: 0.9375rem;
}

.ld-footer__top {
    display: grid;
    gap: 40px;
    padding-bottom: 56px;
}

.ld-footer__brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ld-footer__brand-logo img {
    width: auto;
    height: 32px;
    filter: brightness(0) invert(1);
}

.ld-footer__brand-text {
    font-size: 1.5rem;
    font-weight: 560;
    letter-spacing: -0.03em;
    color: var(--ld-on-dark);
    text-transform: uppercase;
}

.ld-footer__brand p {
    max-width: 28ch;
    margin-top: 20px;
}

.ld-footer__heading {
    margin-bottom: 18px;
    color: var(--ld-on-dark);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.ld-footer__col ul {
    display: grid;
    gap: 10px;
    padding: 0;
    list-style: none;
}

.ld-footer a {
    transition: color 0.25s;
}

.ld-footer a:hover {
    color: var(--ld-on-dark);
}

.ld-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 16px;
    padding-block: 24px;
    border-top: 1px solid var(--ld-line-dark);
    font-size: 0.8125rem;
}

.ld-footer__legal {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

/* Chữ thương hiệu cỡ lớn chân trang — trang trí. */
.ld-footer__mark {
    padding-top: 16px;
    font-size: clamp(3.5rem, 15vw, 15.5rem);
    font-weight: 600;
    line-height: 0.8;
    letter-spacing: -0.06em;
    text-align: center;
    white-space: nowrap;
}

.ld-footer__mark span {
    display: inline-block;
    background: linear-gradient(
        180deg,
        rgba(238, 241, 246, 0.16),
        rgba(238, 241, 246, 0)
    );
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

@media (min-width: 992px) {
    .ld-footer__top {
        grid-template-columns: 1.4fr 1fr 1fr 1fr;
    }
}

/* ───────────── Hộp "Vào trường" ───────────── */

.ld-dialog {
    width: min(92vw, 460px);
    max-width: none;
    padding: 0;
    border: 0;
    border-radius: 24px;
    background: var(--ld-surface);
    box-shadow: 0 40px 80px -24px rgba(11, 21, 38, 0.5);
    color: var(--ld-ink);
}

/* Mở sẵn khi có lỗi mà JS chưa chạy (dialog không modal) — vẫn nằm giữa màn hình. */
.ld-dialog[open]:not(:modal) {
    position: fixed;
    inset: 0;
    z-index: 100;
    margin: auto;
    height: fit-content;
}

.ld-dialog[open] {
    animation: ld-dialog-in 0.35s var(--ld-ease);
}

.ld-dialog::backdrop {
    background: rgba(11, 21, 38, 0.48);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

.ld-dialog__box {
    padding: 28px;
}

.ld-dialog__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.ld-dialog__title {
    font-size: 1.5rem;
    font-weight: 560;
    letter-spacing: -0.02em;
}

.ld-dialog__close {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border: 0;
    border-radius: 50%;
    background: var(--ld-paper);
    color: var(--ld-ink);
    cursor: pointer;
}

.ld-dialog__close:hover {
    background: var(--ld-paper-soft);
    box-shadow: inset 0 0 0 1px var(--ld-line-strong);
}

.ld-dialog__text {
    margin-top: 8px;
    color: var(--ld-ink-2);
    font-size: 0.975rem;
}

.ld-field__label {
    display: block;
    margin: 24px 0 8px;
    font-size: 0.875rem;
    font-weight: 600;
}

.ld-field {
    display: flex;
    align-items: center;
    height: 54px;
    overflow: hidden;
    border-radius: 14px;
    background: var(--ld-surface);
    box-shadow: inset 0 0 0 1px var(--ld-line-strong);
    transition: box-shadow 0.2s;
}

.ld-field:focus-within {
    box-shadow: inset 0 0 0 2px var(--ld-ink);
}

.ld-field.is-invalid {
    box-shadow: inset 0 0 0 2px var(--ld-danger);
}

.ld-field__input {
    flex: 1;
    min-width: 0;
    height: 100%;
    padding: 0 0 0 16px;
    border: 0;
    outline: none;
    background: transparent;
    color: inherit;
    font: inherit;
    font-size: 1rem;
}

.ld-field__suffix {
    max-width: 55%;
    overflow: hidden;
    padding: 0 16px 0 2px;
    color: var(--ld-ink-3);
    font-size: 0.9375rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ld-field__error {
    margin-top: 8px;
    color: var(--ld-danger);
    font-size: 0.875rem;
}

.ld-dialog .ld-btn--block {
    margin-top: 24px;
}

@keyframes ld-dialog-in {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.98);
    }
}

/* ───────────── Trạng thái chờ hiệu ứng ─────────────
 * Chỉ áp khi <html> có `ld-motion` (đặt trong <head>, gỡ khi không chạy được hiệu ứng). landing.js hiện lại bằng
 * GSAP (autoAlpha / scale). Thêm data-* mới ở đây thì JS phải có hiệu ứng hiện nó ra.
 */
.ld-motion [data-reveal],
.ld-motion [data-hero-item],
.ld-motion [data-hero-title],
.ld-motion [data-hero-visual],
.ld-motion [data-mock-float],
.ld-motion [data-split-words],
.ld-motion [data-solution],
.ld-motion [data-contact-title],
.ld-motion [data-footer-mark] {
    visibility: hidden;
}

.ld-motion [data-rule] {
    transform: scaleX(0);
}

.ld-motion [data-guide] {
    transform: scaleY(0);
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .ld-body *,
    .ld-body *::before,
    .ld-body *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}