:root {
    --pink: #df2348;
    --pink-dark: #b81a3a;
    --pink-soft: #ffe6eb;
    --bg: #fff7f8;
    --ink: #26212b;
    --muted: #6b6573;
    --line: #f0dfe3;
    --plum: #2a1233;
    --radius: 16px;
    --font: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body { margin: 0; font: 400 16px/1.6 var(--font); color: var(--ink); background: #fff; -webkit-text-size-adjust: 100%; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--pink); text-decoration: none; }
h1, h2, h3, p, ul { margin: 0; }
ul { padding: 0; list-style: none; }
details > summary { cursor: pointer; }
:focus-visible { outline: 3px solid var(--plum); outline-offset: 2px; }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.section { padding: 56px 0; }
.section.alt { background: var(--bg); }
.eyebrow { color: var(--pink); font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 8px; }
.title { font-size: clamp(26px, 4vw, 38px); line-height: 1.2; font-weight: 700; }
.lead { color: var(--muted); font-size: 17px; max-width: 640px; margin-top: 12px; }
.head { margin-bottom: 32px; }
.head.center { text-align: center; }
.head.center .lead { margin-inline: auto; }
.grid { display: grid; gap: 16px; }
.cols-4 { grid-template-columns: repeat(2, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { color: var(--muted); }
.icon { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.badge { width: 48px; height: 48px; border-radius: 12px; background: var(--pink-soft); color: var(--pink); display: grid; place-items: center; margin-bottom: 14px; font-weight: 700; font-size: 20px; }

/* nút */
.btn { display: inline-block; padding: 12px 24px; border: 2px solid transparent; border-radius: 999px; font: 700 15px/1.2 var(--font); text-align: center; cursor: pointer; transition: transform .15s, background .15s; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--pink); color: #fff; box-shadow: 0 8px 20px rgb(223 35 72 / .28); }
.btn-primary:hover { background: var(--pink-dark); }
.btn-outline { border-color: var(--pink); color: var(--pink); background: #fff; }
.btn-light { background: #fff; color: var(--pink); }
.btn-ghost { border-color: rgb(255 255 255 / .7); color: #fff; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.stores { display: flex; flex-wrap: wrap; gap: 12px; }
.stores img { height: 44px; width: auto; }

/* header */
.header { position: sticky; top: 0; z-index: 50; background: var(--pink); color: #fff; }
.header .wrap { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.logo img { height: 44px; width: auto; }
.nav { display: none; position: absolute; inset: 64px 0 auto; background: var(--pink); padding: 8px 16px 20px; box-shadow: 0 12px 24px rgb(0 0 0 / .15); }
.nav.open { display: block; }
.nav a { display: block; padding: 12px 0; color: #fff; font-weight: 500; }
.nav a:not(.btn) { border-bottom: 1px solid rgb(255 255 255 / .18); }
.nav a.active { font-weight: 700; text-decoration: underline; text-underline-offset: 6px; }
.nav .btn { margin-top: 12px; }
.nav .btn-light { color: var(--pink); }
.menu-btn { margin-left: auto; width: 44px; height: 44px; border: 0; background: none; color: #fff; display: grid; place-items: center; cursor: pointer; }
.menu-btn .icon { width: 28px; height: 28px; }

/* hero */
.hero { background: var(--bg); padding: 40px 0 56px; }
.hero-grid { display: grid; gap: 32px; align-items: center; }
.hero h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.12; font-weight: 700; margin: 8px 0 16px; }
.hero h1 em { font-style: normal; color: var(--pink); }
.hero p { font-size: 18px; color: var(--muted); max-width: 520px; margin-bottom: 24px; }
.hero .stores { margin-top: 20px; }
.collage { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.collage img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); }
.collage img { aspect-ratio: 4 / 3; }
.collage .main { grid-column: span 2; }
.collage .main img { aspect-ratio: 16 / 9; }

/* số liệu */
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: -28px; position: relative; background: var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: 0 10px 30px rgb(38 33 43 / .12); }
.stat { background: #fff; padding: 18px 12px; text-align: center; color: var(--muted); font-size: 14px; }
.stat b { display: block; font-size: 26px; line-height: 1.2; color: var(--pink); }

/* bước */
.step-no { width: 40px; height: 40px; border-radius: 50%; background: var(--pink); color: #fff; display: grid; place-items: center; font-weight: 700; margin-bottom: 12px; }

/* app */
.app { background: var(--plum); color: #fff; }
.app .lead { color: #d6c3dd; }
.app .eyebrow { color: #ff8fa5; }
.app-grid { display: grid; gap: 32px; align-items: center; }
.phones { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; align-items: end; }
.phones img { width: 100%; border-radius: 20px; border: 4px solid #fff; }
.phones img:nth-child(2) { transform: translateY(-16px); }
.app .stores { margin-top: 24px; }

/* gói */
.plan { display: flex; flex-direction: column; position: relative; }
.plan.hot { border: 2px solid var(--pink); box-shadow: 0 14px 34px rgb(223 35 72 / .14); }
.plan .tag { position: absolute; top: -13px; left: 24px; background: var(--pink); color: #fff; font-size: 12px; font-weight: 700; padding: 3px 12px; border-radius: 999px; }
.price { color: var(--pink); font-size: 26px; font-weight: 700; margin-top: 8px; }
.price-note { color: var(--muted); font-size: 14px; margin-bottom: 16px; }
.plan-text { flex: 1; margin-bottom: 20px; }
.plan .actions .btn { flex: 1; }
.checks { margin-bottom: 20px; flex: 1; }
.checks li { position: relative; padding: 5px 0 5px 28px; }
.checks li::before { content: ""; position: absolute; left: 0; top: 11px; width: 16px; height: 9px; border-left: 3px solid var(--pink); border-bottom: 3px solid var(--pink); transform: rotate(-45deg) scale(.8); }

/* câu chuyện */
.story { padding: 0; overflow: hidden; }
.story img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.story div { padding: 16px 20px 20px; }
.story h3 { margin-bottom: 4px; }
.story small { color: var(--pink); font-weight: 500; }

/* video, báo chí */
.thumb { position: relative; display: block; width: 100%; padding: 0; border: 0; border-radius: var(--radius); overflow: hidden; cursor: pointer; background: none; }
.thumb img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.thumb::after { content: ""; position: absolute; inset: 50% auto auto 50%; width: 56px; height: 56px; margin: -28px 0 0 -28px; border-radius: 50%; background: rgb(223 35 72 / .92) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='M9 7l9 5-9 5z'/%3E%3C/svg%3E") center / 28px no-repeat; }
.press { display: flex; flex-direction: column; gap: 16px; }
.press img { height: 36px; width: auto; max-width: none; align-self: flex-start; }
.press p { flex: 1; font-size: 15px; }
.press p::before { content: "\201C"; }
.press p::after { content: "\201D"; }
.press a { font-weight: 500; }
.press a::after { content: " \2192"; }

/* hỏi đáp */
.faq { max-width: 760px; margin-inline: auto; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; margin-bottom: 10px; }
.faq summary { font-weight: 500; }
.faq p { color: var(--muted); margin-top: 8px; }

/* kêu gọi */
.cta { background: var(--pink); color: #fff; text-align: center; padding: 56px 0; }
.cta p { margin: 12px 0 24px; opacity: .95; font-size: 17px; }

/* footer */
.footer { background: var(--plum); color: #d6c3dd; padding: 48px 0 24px; font-size: 14px; }
.footer a { color: #fff; }
.footer h3 { color: #fff; font-size: 15px; margin-bottom: 10px; }
.footer-grid { display: grid; gap: 28px; }
.footer li { padding: 3px 0; }
.footer .stores img { height: 38px; }
.footer-bottom { border-top: 1px solid rgb(255 255 255 / .15); margin-top: 32px; padding-top: 20px; display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; }
.social { display: flex; gap: 12px; align-items: center; }
.social img { width: 20px; height: 20px; }
.social .dmca { width: auto; height: 40px; }

/* hộp thoại video */
dialog { width: min(720px, 100% - 24px); padding: 0; border: 0; border-radius: var(--radius); overflow: hidden; background: #000; }
dialog::backdrop { background: rgb(0 0 0 / .7); }
dialog iframe { display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; }
#image-dialog { width: min(900px, 100% - 24px); max-height: 92vh; background: #fff; }
#image-dialog img { display: block; width: 100%; max-height: 92vh; object-fit: contain; }
dialog button { position: absolute; top: 6px; right: 8px; z-index: 1; width: 36px; height: 36px; border: 0; border-radius: 50%; background: rgb(0 0 0 / .6); color: #fff; font-size: 22px; line-height: 1; cursor: pointer; }

@media (min-width: 768px) {
    .section { padding: 80px 0; }
    .hero { padding: 64px 0 88px; }
    .hero-grid { grid-template-columns: 1.05fr .95fr; gap: 48px; }
    .stats { grid-template-columns: repeat(4, 1fr); }
    .cols-2 { grid-template-columns: repeat(2, 1fr); }
    .cols-3 { grid-template-columns: repeat(3, 1fr); }
    .cols-4 { grid-template-columns: repeat(4, 1fr); }
    .app-grid { grid-template-columns: 1fr 1fr; gap: 48px; }
    .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; }
}

@media (min-width: 1200px) {
    .menu-btn { display: none; }
    .nav { display: flex; position: static; align-items: center; gap: 4px; margin-left: auto; padding: 0; background: none; box-shadow: none; }
    .nav a { padding: 8px 10px; font-size: 14px; white-space: nowrap; }
    .nav a:not(.btn) { border-bottom: 0; }
    .nav .btn { margin: 0 0 0 6px; padding: 7px 18px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .btn { transition: none; }
}

/* đầu trang con */
.page-head { background: var(--bg); padding: 40px 0; text-align: center; border-bottom: 1px solid var(--line); }
.page-head .lead { margin-inline: auto; }

/* dịch vụ đi kèm */
.extra { margin: 0; padding: 0; overflow: hidden; }
.extra img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.extra figcaption { padding: 14px 16px; font-weight: 500; text-align: center; }

/* bảng phí */
.plan .commit { font-size: 14px; background: var(--bg); border-radius: 10px; padding: 10px 12px; margin-bottom: 16px; }
.center-note { text-align: center; color: var(--muted); margin-top: 28px; }

/* liên hệ */
.zalo-card { background: var(--pink); border-color: var(--pink); color: #fff; }
.zalo-card .badge { background: rgb(255 255 255 / .2); color: #fff; }
.zalo-card h2 { font-size: 22px; margin-bottom: 8px; }
.zalo-card p { color: #fff; margin-bottom: 20px; }
.contact-list { display: grid; gap: 18px; }
.contact-list li { display: flex; gap: 14px; align-items: flex-start; }
.contact-list .icon { color: var(--pink); flex-shrink: 0; margin-top: 2px; }
.contact-list b { display: block; }
.legal-note { color: var(--muted); font-size: 14px; }
.map-frame { width: 100%; min-height: 360px; height: 100%; border: 0; border-radius: var(--radius); }
/* biểu mẫu */
.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 6px; font-weight: 500; font-size: 14px; }
.form input, .form select, .form textarea { width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 12px; font: 400 16px/1.4 var(--font); color: var(--ink); background: #fff; }
.form input:focus, .form select:focus, .form textarea:focus { border-color: var(--pink); outline: 3px solid var(--pink-soft); }
.form .btn { justify-self: start; min-width: 120px; }
.alert { padding: 12px 16px; border-radius: 12px; margin-bottom: 16px; font-size: 15px; }
.alert-error { background: #fdecef; color: #8e1230; }

/* nội dung bài viết, đội ngũ */
.prose { max-width: 760px; }
.prose > * + * { margin-top: 20px; }
.prose h2 { margin-top: 40px; font-size: clamp(22px, 3vw, 28px); }
.prose p { color: var(--muted); }
.prose img, .rounded { border-radius: var(--radius); }
.team { grid-template-columns: repeat(2, 1fr); }
.member { text-align: center; display: grid; gap: 4px; justify-items: center; }
.member img { width: 128px; height: 128px; border-radius: 50%; object-fit: cover; border: 1px solid var(--line); margin-bottom: 8px; }
.member span { color: var(--muted); font-size: 14px; }
@media (min-width: 768px) { .team { grid-template-columns: repeat(4, 1fr); } }

/* phản hồi khách hàng */
.masonry { columns: 2 160px; column-gap: 12px; }
.masonry .thumb { margin-bottom: 12px; break-inside: avoid; border: 1px solid var(--line); }
.masonry .thumb::after { display: none; }
.masonry .thumb img { aspect-ratio: auto; }
@media (min-width: 768px) { .masonry { columns: 4 200px; } }

/* video khổ dọc */
.reels { grid-template-columns: repeat(2, 1fr); }
.grid + .reels { margin-top: 16px; }
.thumb.reel img { aspect-ratio: 9 / 16; }
@media (max-width: 1023px) { .reels.trim .thumb:nth-child(n + 5) { display: none; } }
@media (min-width: 768px) { .reels { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 1024px) { .reels { grid-template-columns: repeat(5, 1fr); } }
.prose .thumb.reel { max-width: 280px; }

/* blog */
.chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 28px; }
.chip { padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line); color: var(--ink); font-size: 14px; font-weight: 500; }
.chip.active { background: var(--pink); border-color: var(--pink); color: #fff; }
.blog-card h3 a { color: var(--ink); }
.blog-card h3 { font-size: 17px; }
.blog-card p { font-size: 15px; margin: 6px 0; }
.blog-card small { color: var(--muted); font-weight: 400; }
.pager { display: flex; gap: 16px; align-items: center; justify-content: center; margin-top: 32px; }
.btn.disabled { opacity: .4; pointer-events: none; }
.crumbs { color: var(--muted); font-size: 14px; margin-bottom: 20px; }
.crumbs ol { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 8px; margin: 0; padding: 0; list-style: none; }
.crumbs li + li::before { content: "›"; margin-right: 8px; }
.crumbs a:hover { color: var(--pink); text-decoration: underline; }
.crumbs [aria-current] { color: var(--ink, inherit); }
.section .crumbs ol { justify-content: flex-start; }
.hero .crumbs { margin-bottom: 24px; }
.hero .crumbs ol { justify-content: flex-start; }
.post-layout { display: grid; gap: 40px; }
.post-layout .prose { max-width: none; min-width: 0; }
.post-layout .prose img { max-width: 100%; height: auto; }
.post-cta { text-align: center; background: var(--bg); }
.post-cta .btn { margin-top: 16px; }
@media (min-width: 1024px) { .post-layout { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); } }

/* khóa học, thanh toán */
.price del, .price small { color: var(--muted); font-size: 15px; font-weight: 400; }
.lessons h2 { font-size: 18px; margin: 32px 0 12px; }
.lessons li { display: flex; justify-content: space-between; gap: 16px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 8px; background: #fff; }
.link { border: 0; background: none; color: var(--pink); font: inherit; font-weight: 500; cursor: pointer; padding: 0 8px 0 0; }
.bank { display: flex; gap: 16px; align-items: center; }
.bank img { width: 88px; height: auto; flex-shrink: 0; }

/* trang pháp lý */
.legal p { color: var(--ink); }
.footer .stores { margin-top: 16px; }
.plan .thumb { margin-bottom: 16px; }

/* thông báo thành viên mới */
.toast { position: fixed; left: 16px; bottom: 16px; z-index: 40; display: flex; align-items: center; gap: 12px; max-width: min(340px, 100% - 32px); padding: 12px 14px; background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--pink); border-radius: 12px; box-shadow: 0 10px 30px rgb(38 33 43 / .18); font-size: 14px; }
.toast[hidden] { display: none; }
.toast p { margin: 0; }
.toast button { margin-left: auto; padding: 0 4px; border: 0; background: none; color: var(--muted); font-size: 20px; line-height: 1; cursor: pointer; }