:root {
  --red: #b3131b;
  --red-dark: #7d0d13;
  --orange: #f36c21;
  --navy: #111827;
  --ink: #1d2430;
  --muted: #697180;
  --soft: #f6f7f9;
  --line: #e6e8ec;
  --white: #fff;
  --shadow: 0 20px 60px rgba(17, 24, 39, .12);
  --radius: 22px;
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: "Be Vietnam Pro", system-ui, sans-serif; line-height: 1.7; overflow-x: hidden; }
body.menu-open, body.lightbox-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 9999; padding: 10px 16px; background: var(--navy); color: white; border-radius: 8px; transition: .2s; }
.skip-link:focus { top: 16px; }

.topbar { background: var(--navy); color: rgba(255,255,255,.8); font-size: 13px; }
.topbar__inner { min-height: 38px; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.topbar p { margin: 0; }
.topbar__links { display: flex; gap: 24px; }
.topbar a:hover { color: white; }

.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(20,30,45,.08); backdrop-filter: blur(12px); }
.header__inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
/* .brand { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand__mark { width: 46px; height: 46px; display: grid; place-items: center; color: white; background: linear-gradient(145deg, var(--red), var(--orange)); border-radius: 50% 50% 50% 14%; font-weight: 800; font-size: 24px; box-shadow: 0 8px 22px rgba(179,19,27,.28); transform: rotate(-5deg); }
.brand__text { display: flex; flex-direction: column; line-height: 1; }
.brand__text strong { color: var(--red); font-size: 22px; letter-spacing: 2px; }
.brand__text small { margin-top: 5px; color: var(--navy); font-size: 9px; font-weight: 800; letter-spacing: 2.2px; }
.brand--light .brand__text strong, .brand--light .brand__text small { color: white; } */

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  line-height: 0;
}

.brand__logo {
  display: block;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 7px 14px rgba(179, 19, 27, 0.13));
  transition:
    transform 0.25s ease,
    filter 0.25s ease;
}

.brand:hover .brand__logo {
  transform: scale(1.035);
  filter: drop-shadow(0 9px 18px rgba(179, 19, 27, 0.2));
}

.brand__logo--header {
  height: 70px;
}

.brand__logo--footer {
  height: 112px;
  filter: drop-shadow(0 10px 24px rgba(0, 0, 0, 0.24));
}

.main-nav { display: flex; align-items: center; gap: 26px; font-size: 14px; font-weight: 600; }
.main-nav > a:not(.btn) { position: relative; padding: 28px 0; }
.main-nav > a:not(.btn)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 20px; height: 2px; background: var(--red); transition: .25s; }
.main-nav > a:not(.btn):hover::after, .main-nav > a.is-active::after { right: 0; }
.menu-toggle { display: none; border: 0; background: transparent; padding: 8px; }
.has-image-error { position: relative; background: radial-gradient(circle at 75% 25%, rgba(243,108,33,.48), transparent 24%), linear-gradient(135deg, #111827, #7d0d13); }
.has-image-error::after { content: "HAVA TEAM BUILDING"; position: absolute; inset: 0; display: grid; place-items: center; color: rgba(255,255,255,.18); font-size: clamp(18px, 3vw, 42px); font-weight: 800; letter-spacing: 3px; text-align: center; pointer-events: none; }
.has-image-error > img { visibility: hidden; }
.menu-toggle span { display: block; width: 27px; height: 2px; margin: 6px 0; background: var(--navy); transition: .25s; }

.btn { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid transparent; border-radius: 999px; padding: 0 24px; font-weight: 700; transition: transform .2s, box-shadow .2s, background .2s, color .2s; }
.btn:hover { transform: translateY(-2px); }
.btn--small { min-height: 42px; padding-inline: 20px; }
.btn--primary { color: white; background: linear-gradient(120deg, var(--red), #d7252f); box-shadow: 0 14px 32px rgba(179,19,27,.24); }
.btn--primary:hover { box-shadow: 0 18px 38px rgba(179,19,27,.34); }
.btn--ghost { color: white; border-color: rgba(255,255,255,.65); background: rgba(255,255,255,.08); backdrop-filter: blur(5px); }
.btn--ghost:hover { background: white; color: var(--navy); }
.btn--outline { border-color: var(--red); color: var(--red); }
.btn--outline:hover { background: var(--red); color: white; }
.btn--light { background: white; color: var(--red); }
.btn--block { width: 100%; }

.hero { position: relative; min-height: calc(100vh - 116px); background: var(--navy); color: white; }
.hero-slider, .hero-slide { position: absolute; inset: 0; }
.hero-slider {
  overflow: hidden;
  isolation: isolate;
  background: var(--navy);
  touch-action: pan-y;
  cursor: grab;
}
.hero-slider.is-dragging { cursor: grabbing; }

/*
 * Slider ngang: ảnh mới đi vào từ cạnh phải/trái, ảnh hiện tại rời khỏi
 * khung nhìn theo hướng ngược lại. Không dùng opacity/fade để chuyển ảnh.
 */
.hero-slide {
  z-index: 0;
  visibility: hidden;
  overflow: hidden;
  pointer-events: none;
  transform: translate3d(100%, 0, 0);
  backface-visibility: hidden;
  will-change: transform;
  transition: transform .95s cubic-bezier(.77, 0, .18, 1);
}
.hero-slide.is-active,
.hero-slide.is-from-right,
.hero-slide.is-from-left,
.hero-slide.is-leaving-left,
.hero-slide.is-leaving-right {
  visibility: visible;
}
.hero-slide.is-active {
  z-index: 2;
  transform: translate3d(0, 0, 0);
}
.hero-slide.is-from-right {
  z-index: 3;
  transform: translate3d(100%, 0, 0);
}
.hero-slide.is-from-left {
  z-index: 3;
  transform: translate3d(-100%, 0, 0);
}
.hero-slide.is-leaving-left {
  z-index: 1;
  transform: translate3d(-100%, 0, 0);
}
.hero-slide.is-leaving-right {
  z-index: 1;
  transform: translate3d(100%, 0, 0);
}
.hero-slide.is-preparing {
  transition: none !important;
}
.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.025);
  backface-visibility: hidden;
  will-change: transform;
  transition: transform 5.8s ease-out;
}
.hero-slide.is-active img {
  transform: scale(1);
}
.hero-slide img[src=""], .hero-slide img:not([src]) { visibility: hidden; }
.hero__overlay { position: absolute; inset: 0; z-index: 2; background: linear-gradient(90deg, rgba(8,15,28,.88) 0%, rgba(8,15,28,.68) 43%, rgba(8,15,28,.28) 72%, rgba(8,15,28,.36) 100%), linear-gradient(0deg, rgba(8,15,28,.35), transparent 45%); }
.hero__content { position: relative; z-index: 3; min-height: calc(100vh - 116px); display: flex; flex-direction: column; justify-content: center; padding-block: 100px 110px; pointer-events: none; }
.hero__content > * { pointer-events: auto; }
.eyebrow { width: fit-content; margin-bottom: 20px; padding: 7px 13px; border: 1px solid rgba(255,255,255,.35); border-radius: 999px; color: #ffd4c1; font-size: 12px; font-weight: 800; letter-spacing: 2.2px; }
.hero h1 { margin: 0; max-width: 820px; font-size: clamp(44px, 6.5vw, 88px); line-height: .98; letter-spacing: -3px; text-transform: uppercase; }
.hero h1 span { color: #ffac80; font-size: .72em; }
.hero__content > p { max-width: 690px; margin: 28px 0 34px; color: rgba(255,255,255,.85); font-size: clamp(16px, 1.5vw, 20px); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero__badges { display: flex; flex-wrap: wrap; gap: 12px 28px; margin-top: 46px; color: rgba(255,255,255,.82); font-size: 13px; font-weight: 600; }
.hero__badges span::before { content: "✓"; margin-right: 8px; color: #ffb28a; }
.slider-arrow { position: absolute; top: 50%; z-index: 4; width: 52px; height: 52px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.32); border-radius: 50%; background: rgba(8,15,28,.25); color: white; font-size: 34px; line-height: 1; backdrop-filter: blur(7px); transition: .2s; }
.slider-arrow:hover { background: white; color: var(--red); }
.slider-arrow--prev { left: 24px; }
.slider-arrow--next { right: 24px; }
.slider-dots { position: absolute; z-index: 4; left: 50%; bottom: 28px; display: flex; gap: 9px; transform: translateX(-50%); }
.slider-dots button { width: 9px; height: 9px; padding: 0; border: 0; border-radius: 999px; background: rgba(255,255,255,.45); transition: .25s; }
.slider-dots button.is-active { width: 30px; background: white; }
.scroll-down { position: absolute; z-index: 5; left: 50%; bottom: -25px; width: 50px; height: 50px; display: grid; place-items: center; border-radius: 50%; background: white; box-shadow: var(--shadow); transform: translateX(-50%); }
.scroll-down span { width: 8px; height: 8px; border-right: 2px solid var(--red); border-bottom: 2px solid var(--red); transform: rotate(45deg) translate(-2px,-2px); }

.section { padding: 110px 0; }
.section--soft { background: var(--soft); }
.section--dark { overflow: hidden; color: white; background: #111722; }
.section-kicker { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 15px; color: var(--red); font-size: 12px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; }
.section-kicker::before { content: ""; width: 32px; height: 2px; background: currentColor; }
.section-kicker--light { color: #ffb18a; }
.section-copy h2, .section-heading h2, .contact h2, .capability h2 { margin: 0 0 24px; color: var(--navy); font-size: clamp(34px, 4vw, 56px); line-height: 1.13; letter-spacing: -2px; }
.section-copy h2 span, .section-heading h2 span, .contact h2 span { color: var(--red); }
.section-copy p, .section-heading p, .contact__content > p { color: var(--muted); }
.section-heading { max-width: 780px; margin: 0 auto 55px; text-align: center; }
.section-heading .section-kicker { justify-content: center; }
.section-heading--light h2 { color: white; }
.section-heading--light p { color: rgba(255,255,255,.65); }
.section-heading--light h2 span { color: #ff9e6a; }
.split-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: clamp(50px, 7vw, 100px); }
.split-layout--reverse .section-copy { order: 1; }
.split-layout--reverse .destinations__media { order: 2; }
.intro__media { display: flex; flex-direction: column; gap: 18px; }
.media-frame { overflow: hidden; border-radius: 10px 90px 10px 10px; box-shadow: var(--shadow); background: linear-gradient(135deg, #d8dce3, #eef0f3); }
.media-frame--large { aspect-ratio: 4 / 4.35; }
.media-frame img { width: 100%; height: 100%; object-fit: cover; }
.experience-card { width: min(360px, 100%); align-self: flex-end; padding: 24px 26px; background: var(--red); color: white; border-radius: 18px; box-shadow: 0 14px 34px rgba(179,19,27,.2); }
.experience-card strong { display: block; font-size: 25px; letter-spacing: 2px; }
.experience-card span { display: block; margin-top: 6px; color: rgba(255,255,255,.78); font-size: 13px; }
.check-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 30px 0; }
.check-grid span { padding: 13px 15px; border-radius: 12px; background: var(--soft); font-size: 14px; font-weight: 600; }
.check-grid span::before { content: "✓"; margin-right: 9px; color: var(--red); }
.text-link { display: inline-flex; align-items: center; gap: 10px; color: var(--red); font-weight: 700; }
.text-link span { transition: transform .2s; }
.text-link:hover span { transform: translateX(5px); }

.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card { position: relative; min-height: 300px; display: flex; flex-direction: column; padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); background: white; transition: transform .25s, box-shadow .25s, border-color .25s; }
.service-card:hover { transform: translateY(-8px); border-color: transparent; box-shadow: var(--shadow); }
.service-card__icon { width: 54px; height: 54px; display: grid; place-items: center; margin-bottom: 28px; border-radius: 16px; background: #fff0ea; color: var(--red); font-weight: 800; }
.service-card h3 { margin: 0 0 12px; color: var(--navy); font-size: 20px; }
.service-card p { margin: 0 0 24px; color: var(--muted); font-size: 14px; }
.service-card a { margin-top: auto; color: var(--red); font-weight: 700; font-size: 14px; }
.service-card--accent { background: white; border-color: rgba(179,19,27,.3); box-shadow: inset 0 4px 0 var(--red); }
.service-card--accent .service-card__icon { background: #fff0ea; color: var(--red); }
.service-card--accent h3 { color: var(--navy); }
.service-card--accent a { color: var(--red); }
.service-card--accent p { color: var(--muted); }

.capability { padding-top: 0; }
.capability__panel { display: grid; grid-template-columns: .75fr 1.25fr; gap: 70px; padding: 70px; border-radius: 30px; color: white; background: radial-gradient(circle at 90% 10%, rgba(243,108,33,.28), transparent 30%), linear-gradient(135deg, #151c29, #252e3c); box-shadow: var(--shadow); }
.capability h2 { color: white; margin-bottom: 0; }
.capability__list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.capability__list span { padding: 17px 18px; border: 1px solid rgba(255,255,255,.12); border-radius: 13px; background: rgba(255,255,255,.04); font-size: 14px; }
.capability__list span::before { content: "+"; margin-right: 10px; color: #ff9e6a; font-weight: 800; }

.package-grid { display: grid; grid-template-columns: repeat(3, 1fr); align-items: stretch; gap: 24px; }
.package-card { position: relative; display: flex; flex-direction: column; padding: 38px; border: 1px solid var(--line); border-radius: var(--radius); background: white; box-shadow: 0 12px 40px rgba(17,24,39,.06); }
.package-card--featured { transform: translateY(-12px); border: 2px solid var(--red); box-shadow: 0 24px 60px rgba(179,19,27,.14); }
.package-card__popular { position: absolute; top: 0; right: 30px; padding: 8px 15px; border-radius: 0 0 12px 12px; background: var(--red); color: white; font-size: 11px; font-weight: 800; }
.package-card__label { color: var(--red); font-size: 12px; font-weight: 800; letter-spacing: 1.5px; }
.package-card h3 { margin: 8px 0 10px; color: var(--navy); font-size: 30px; }
.package-card__desc { min-height: 74px; margin: 0 0 24px; color: var(--muted); font-size: 14px; }
.package-card ul { flex: 1; margin: 0 0 30px; padding: 0; list-style: none; }
.package-card li { padding: 11px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.package-card li::before { content: "✓"; margin-right: 10px; color: var(--red); font-weight: 800; }

.timeline { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; }
.timeline::before { content: ""; position: absolute; left: 8%; right: 8%; top: 28px; height: 1px; background: rgba(255,255,255,.18); }
.timeline__item { position: relative; padding: 0 22px; text-align: center; }
.timeline__item strong { position: relative; z-index: 1; width: 56px; height: 56px; display: grid; place-items: center; margin: 0 auto 26px; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; background: #111722; color: #ff9e6a; }
.timeline__item h3 { margin: 0 0 10px; color: white; font-size: 17px; }
.timeline__item p { margin: 0; color: rgba(255,255,255,.58); font-size: 13px; }

.location-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 28px; }
.location-list span { padding: 16px; border-left: 3px solid var(--red); background: var(--soft); font-size: 14px; font-weight: 600; }
.location-list b { margin-right: 7px; color: var(--red); }
.destinations__media { display: flex; flex-direction: column; gap: 18px; min-height: 0; }
.destinations__media > img { width: 100%; height: 520px; object-fit: cover; border-radius: 80px 10px 80px 10px; box-shadow: var(--shadow); }
.floating-quote { width: min(430px, 100%); align-self: flex-start; padding: 22px 25px; border-left: 4px solid var(--red); border-radius: 14px; background: white; color: var(--navy); box-shadow: 0 14px 36px rgba(17,24,39,.1); font-weight: 700; }

.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 270px; gap: 16px; }
.gallery-item { position: relative; overflow: hidden; padding: 0; border: 0; border-radius: 18px; background: #ddd; }
.gallery-item--wide { grid-column: span 2; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s; }
.gallery-item span { position: absolute; inset: auto 18px 18px auto; padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.9); color: var(--navy); font-size: 12px; font-weight: 700; opacity: 0; transform: translateY(8px); transition: .25s; }
.gallery-item:hover img { transform: scale(1.07); }
.gallery-item:hover span { opacity: 1; transform: translateY(0); }
.lightbox { position: fixed; inset: 0; z-index: 3000; display: grid; place-items: center; padding: 30px; background: rgba(4,8,15,.92); opacity: 0; visibility: hidden; transition: .25s; }
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox img { max-width: min(1200px, 92vw); max-height: 86vh; object-fit: contain; border-radius: 12px; }
.lightbox__close { position: fixed; top: 18px; right: 24px; border: 0; background: transparent; color: white; font-size: 46px; }

.cta-band { padding: 70px 0; color: white; background: linear-gradient(120deg, var(--red), #df3535); }
.cta-band__inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.cta-band span { font-size: 12px; font-weight: 800; letter-spacing: 2px; opacity: .8; }
.cta-band h2 { margin: 8px 0 0; font-size: clamp(26px, 3.2vw, 42px); line-height: 1.2; }

.contact { overflow: hidden; background: white; }
.contact__grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: start; }
.contact-list { display: grid; gap: 12px; margin-top: 35px; }
.contact-list > * { display: flex; flex-direction: column; padding: 17px 18px; border-left: 3px solid var(--red); background: var(--soft); }
.contact-list b { color: var(--red); font-size: 12px; text-transform: uppercase; letter-spacing: 1px; }
.contact-list span { margin-top: 3px; color: var(--navy); font-weight: 600; }
.lead-form { padding: 38px; border: 1px solid var(--line); border-radius: 26px; background: var(--soft); box-shadow: var(--shadow); }
.form-heading h3 { margin: 0; color: var(--navy); font-size: 25px; }
.form-heading p { margin: 6px 0 26px; color: var(--muted); font-size: 13px; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.form-field { display: flex; flex-direction: column; gap: 7px; }
.form-field--full { grid-column: 1 / -1; }
.form-field > span { font-size: 13px; font-weight: 700; }
.form-field input, .form-field select, .form-field textarea { width: 100%; border: 1px solid #dfe2e7; border-radius: 12px; outline: 0; padding: 13px 14px; background: white; color: var(--ink); transition: border .2s, box-shadow .2s; }
.form-field input, .form-field select { min-height: 50px; }
.form-field textarea { resize: vertical; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(179,19,27,.1); }
.form-field.is-invalid input, .form-field.is-invalid select, .form-field.is-invalid textarea { border-color: #d72d36; }
.form-field small { min-height: 17px; color: #c4202a; font-size: 11px; }
.honeypot { position: absolute; left: -9999px; }
.form-status { min-height: 24px; margin: 14px 0 0; text-align: center; font-size: 13px; }
.form-status.is-success { color: #087b44; }
.form-status.is-error { color: #c4202a; }

.site-footer { color: rgba(255,255,255,.72); background: #0d131d; }
.footer__grid { display: grid; grid-template-columns: 1.4fr .65fr 1fr; gap: 70px; padding: 70px 0; }
.footer__brand p { max-width: 480px; margin-top: 24px; }
.site-footer h3 { margin: 0 0 18px; color: white; font-size: 15px; }
.site-footer .footer__grid > div:not(.footer__brand) { display: flex; flex-direction: column; align-items: flex-start; gap: 9px; font-size: 14px; }
.site-footer a:hover { color: white; }
.footer__bottom { min-height: 64px; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid rgba(255,255,255,.1); font-size: 12px; }
.footer__bottom p { margin: 0; }

.quick-contact { position: fixed; z-index: 1200; right: 20px; bottom: 22px; display: flex; flex-direction: column; gap: 10px; }
.quick-contact__item { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 50%; color: white; font-weight: 800; font-size: 13px; box-shadow: 0 12px 30px rgba(0,0,0,.2); }
.quick-contact__item--zalo { background: #087ef5; }
.quick-contact__item--phone { background: var(--red); font-size: 22px; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(179,19,27,.35), 0 12px 30px rgba(0,0,0,.2); } 50% { box-shadow: 0 0 0 12px rgba(179,19,27,0), 0 12px 30px rgba(0,0,0,.2); } }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1050px) {
  .main-nav { gap: 17px; font-size: 13px; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline { grid-template-columns: repeat(3, 1fr); gap: 38px 0; }
  .timeline::before { display: none; }
  .package-card { padding: 30px; }
}

@media (max-width: 850px) {
  /* .topbar p { display: none; }
  .topbar__inner { justify-content: center; }
  .topbar__links { width: 100%; justify-content: space-between; gap: 8px; }
  .header__inner { min-height: 70px; }
  .menu-toggle { display: block; position: relative; z-index: 3; }
  .menu-toggle.is-active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .menu-toggle.is-active span:nth-child(2) { opacity: 0; }
  .menu-toggle.is-active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  .main-nav { position: fixed; top: 0; right: 0; bottom: 0; left: auto; width: 78%; z-index: 2; display: none; flex-direction: column; align-items: stretch; justify-content: center; padding: 80px 34px; background: white; box-shadow: -20px 0 50px rgba(0,0,0,.12); }
  .main-nav.is-open { display: flex; animation: menuIn .25s ease both; }
  @keyframes menuIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
  .main-nav > a:not(.btn) { padding: 12px 0; font-size: 18px; }
  .main-nav > a:not(.btn)::after { bottom: 5px; } */
  .topbar p {
  display: none;
  }

  .topbar__inner {
    justify-content: center;
  }

  .topbar__links {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
  }

  /*
  * backdrop-filter làm menu fixed bị giới hạn
  * theo chiều cao của header trên mobile.
  */
  .site-header {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .header__inner {
    min-height: 70px;
  }

  .menu-toggle {
    display: block;
    position: relative;
    z-index: 1003;
  }

  .menu-toggle.is-active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .menu-toggle.is-active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.is-active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  /* Nền tối phía sau menu mobile */
  body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 999;
    background: rgba(8, 15, 28, 0.5);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      opacity 0.28s ease,
      visibility 0.28s ease;
  }

  body.menu-open::before {
    opacity: 1;
    visibility: visible;
  }

  .main-nav {
    position: fixed;
    inset: 0 0 0 auto;
    z-index: 1002;

    width: min(360px, 84vw);
    min-height: 100vh;
    height: 100dvh;

    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 4px;

    padding: 104px 28px 34px;
    overflow-y: auto;
    overscroll-behavior: contain;

    background: #fff;
    box-shadow: -20px 0 50px rgba(0, 0, 0, 0.16);

    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translate3d(100%, 0, 0);

    transition:
      transform 0.32s cubic-bezier(0.22, 0.61, 0.36, 1),
      opacity 0.2s ease,
      visibility 0.32s ease;
  }

  .main-nav.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate3d(0, 0, 0);
  }

  .main-nav > a:not(.btn) {
    width: 100%;
    padding: 13px 2px;
    font-size: 17px;
  }

  .main-nav > a:not(.btn)::after {
    bottom: 7px;
  }

  .main-nav .btn {
    width: 100%;
    margin-top: 14px;
  }
  .hero, .hero__content { min-height: calc(100svh - 108px); }
  .hero__content { padding: 90px 0 100px; }
  .hero h1 { letter-spacing: -2px; }
  .slider-arrow { width: 44px; height: 44px; top: auto; bottom: 22px; }
  .slider-arrow--prev { left: 20px; }
  .slider-arrow--next { right: 20px; }
  .slider-dots { bottom: 39px; }
  .section { padding: 85px 0; }
  .split-layout, .contact__grid { grid-template-columns: 1fr; gap: 55px; }
  .split-layout--reverse .section-copy, .split-layout--reverse .destinations__media { order: initial; }
  .capability__panel { grid-template-columns: 1fr; padding: 48px; gap: 35px; }
  .package-grid { grid-template-columns: 1fr; max-width: 620px; margin: 0 auto; }
  .package-card--featured { transform: none; }
  .package-card__desc { min-height: 0; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-band__inner { flex-direction: column; align-items: flex-start; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .topbar__links a:last-child { display: none; }
  .topbar__links { justify-content: center; }
  .brand__logo--header {height: 58px;}
  .brand__logo--footer { height: 98px;}
  .hero__overlay { background: linear-gradient(90deg, rgba(8,15,28,.86), rgba(8,15,28,.53)); }
  .hero h1 { font-size: clamp(40px, 13vw, 62px); }
  .hero__content > p { margin-block: 22px 28px; font-size: 15px; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__badges { display: none; }
  .section { padding: 72px 0; }
  .section-copy h2, .section-heading h2, .contact h2, .capability h2 { font-size: 34px; letter-spacing: -1px; }
  .experience-card { padding: 18px; }
  .experience-card strong { font-size: 20px; }
  .check-grid, .service-grid, .capability__list, .location-list, .form-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 260px; }
  .capability__panel { padding: 34px 24px; border-radius: 22px; }
  .timeline { grid-template-columns: 1fr; gap: 28px; }
  .timeline__item { display: grid; grid-template-columns: 56px 1fr; column-gap: 18px; text-align: left; }
  .timeline__item strong { grid-row: 1 / span 2; margin: 0; }
  .timeline__item h3 { align-self: end; }
  .destinations__media { min-height: 0; }
  .destinations__media > img { min-height: 0; height: 420px; }
  .floating-quote { width: 100%; }
  .gallery-grid { grid-template-columns: 1fr; grid-auto-rows: 260px; }
  .gallery-item--wide { grid-column: auto; }
  .lead-form { padding: 25px 18px; }
  .form-field--full { grid-column: auto; }
  .footer__grid { grid-template-columns: 1fr; gap: 35px; padding: 55px 0; }
  .footer__brand { grid-column: auto; }
  .footer__bottom { flex-direction: column; justify-content: center; gap: 4px; text-align: center; }
  .quick-contact { right: 13px; bottom: 14px; }
  .quick-contact__item { width: 47px; height: 47px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}