/* goighedoctorloan.com — Lan Cột Sống × DOCTORLOAN */
:root {
  --brand: #ff7500;
  --brand-dark: #d95f00;
  --brand-soft: #fff1e5;
  --green: #12775a;
  --green-soft: #e6f4ee;
  --ink: #1d2730;
  --ink-2: #4a5763;
  --muted: #7b8894;
  --line: #e9e3dc;
  --bg: #fffaf5;
  --card: #ffffff;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 10px 30px rgba(60, 35, 10, .08);
  --shadow-lg: 0 20px 50px rgba(60, 35, 10, .14);
  --wrap: 1180px;
  --font: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html.mode-tu-van .only-order, html:not(.mode-tu-van) .only-advice { display: none !important; }
/* Ẩn ô logo Netlify tự chèn ở góc dưới (đè lên nút Zalo/Gọi) */
#nl-badge-frame, iframe[id^="nl-badge"] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); font-size: 17px; line-height: 1.65; color: var(--ink); background: var(--bg); }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(28px, 4.2vw, 48px); font-weight: 800; }
h2 { font-size: clamp(26px, 3.6vw, 38px); font-weight: 800; }
h3 { font-size: 20px; font-weight: 700; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section.alt { background: #fff; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 44px; }
.section-head p { color: var(--ink-2); font-size: 18px; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--brand-dark); background: var(--brand-soft); padding: 6px 14px; border-radius: 99px; margin-bottom: 14px; }
.hl { color: var(--brand); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 26px; border-radius: 99px; font: inherit; font-weight: 700; font-size: 16px; text-decoration: none; border: 2px solid transparent; cursor: pointer; transition: transform .15s, box-shadow .15s, background .15s; min-height: 50px; }
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible { outline: 3px solid #ffb27a; outline-offset: 2px; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 8px 22px rgba(255, 117, 0, .35); }
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-dark); }
.btn-green { background: var(--green); color: #fff; }
.btn-block { width: 100%; }
.btn-sm { padding: 9px 16px; min-height: 40px; font-size: 14px; }

/* Header */
.topbar { background: var(--ink); color: #fff; font-size: 14px; text-align: center; padding: 8px 16px; }
.topbar a { color: #ffd2ad; font-weight: 700; text-decoration: none; }
header.nav { position: sticky; top: 0; z-index: 50; background: rgba(255, 250, 245, .92); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.logo { display: flex; flex-direction: column; text-decoration: none; }
.logo img { height: 22px; width: auto; }
.logo small { font-size: 12px; color: var(--ink-2); font-weight: 600; margin-top: 3px; }
.nav-links { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; }
.nav-links a { text-decoration: none; font-weight: 600; font-size: 15px; color: var(--ink-2); }
.nav-links a:hover { color: var(--brand-dark); }
.nav-cta { display: flex; gap: 10px; align-items: center; }
.nav-phone { font-weight: 800; text-decoration: none; color: var(--green); white-space: nowrap; }
.menu-btn { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.menu-btn span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; }

/* Hero */
.hero { padding: 56px 0 72px; background: radial-gradient(1000px 500px at 85% 10%, #ffe2c8 0%, transparent 60%), radial-gradient(700px 400px at 0% 100%, #e3f3ec 0%, transparent 60%); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.hero h1 .hl { white-space: nowrap; }
.hero-sub { font-size: 19px; color: var(--ink-2); max-width: 560px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 22px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 15px; color: var(--ink-2); list-style: none; padding: 0; margin: 0; }
.hero-trust li::before { content: "✓"; color: var(--green); font-weight: 800; margin-right: 6px; }
.hero-visual { position: relative; aspect-ratio: 1 / 1; max-width: 500px; margin-left: auto; width: 100%; }
.hero-visual .blob { position: absolute; inset: 8%; background: linear-gradient(140deg, #ffb680, #ff7500); border-radius: 42% 58% 55% 45% / 50% 40% 60% 50%; }
.hero-visual img.chair { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(0 30px 30px rgba(0, 0, 0, .18)); }
.badge-float { position: absolute; background: #fff; border-radius: 14px; padding: 10px 14px; box-shadow: var(--shadow); font-size: 14px; line-height: 1.35; font-weight: 600; }
.badge-float b { display: block; font-size: 22px; color: var(--brand); }
.badge-float.b1 { left: -4%; top: 14%; }
.badge-float.b2 { right: -2%; bottom: 12%; }

/* Stats strip */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: -36px; position: relative; z-index: 2; }
.stat { background: #fff; border-radius: var(--radius); padding: 22px; text-align: center; box-shadow: var(--shadow); }
.stat b { display: block; font-size: 30px; color: var(--brand); line-height: 1.1; }
.stat span { font-size: 14px; color: var(--ink-2); }

/* Pain cards */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; align-items: center; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.card .ico { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: var(--brand-soft); font-size: 26px; margin-bottom: 14px; }
.card p { color: var(--ink-2); margin: 0; font-size: 16px; }
a.card { text-decoration: none; color: inherit; transition: border-color .15s, box-shadow .15s; }
a.card:hover { border-color: var(--brand); box-shadow: var(--shadow); }

/* Doctor / authority */
.doctor { background: linear-gradient(160deg, #fff 0%, #fff4ea 100%); border-radius: 28px; padding: 40px; display: grid; grid-template-columns: 300px 1fr; gap: 40px; align-items: end; box-shadow: var(--shadow); }
.doctor img { width: 100%; max-width: 300px; margin: -80px auto 0; }
.checklist { list-style: none; padding: 0; margin: 18px 0; }
.checklist li { padding-left: 32px; position: relative; margin-bottom: 10px; }
.checklist li::before { content: ""; position: absolute; left: 0; top: 5px; width: 20px; height: 20px; border-radius: 50%; background: var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center/12px no-repeat; }
.media-logos { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.media-logos span { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 6px 14px; font-weight: 800; color: var(--ink-2); font-size: 14px; }

/* Quiz */
.quiz { background: var(--ink); color: #fff; border-radius: 28px; padding: 44px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; }
.quiz h2 { color: #fff; }
.quiz p.lead { color: #c8d1d8; }
.quiz-box { background: #fff; color: var(--ink); border-radius: 20px; padding: 28px; min-height: 360px; display: flex; flex-direction: column; }
.quiz-progress { height: 6px; background: #f1ece6; border-radius: 6px; overflow: hidden; margin-bottom: 20px; }
.quiz-progress i { display: block; height: 100%; width: 0; background: var(--brand); transition: width .3s; }
.quiz-step small { color: var(--muted); font-weight: 600; }
.quiz-step h3 { margin: 6px 0 16px; font-size: 22px; }
.quiz-opts { display: grid; gap: 10px; }
.quiz-opt { text-align: left; font: inherit; font-size: 16px; padding: 14px 18px; border: 2px solid var(--line); border-radius: 14px; background: #fff; cursor: pointer; transition: border-color .15s, background .15s; }
.quiz-opt:hover, .quiz-opt:focus-visible { border-color: var(--brand); background: var(--brand-soft); outline: none; }
.quiz-back { margin-top: auto; padding-top: 16px; background: none; border: 0; color: var(--muted); font: inherit; cursor: pointer; align-self: flex-start; }
.result-card { border: 2px solid var(--brand); border-radius: 16px; padding: 18px; margin-bottom: 12px; }
.result-card.alt { border-color: var(--line); }
.result-card .tag { font-size: 12px; font-weight: 800; color: var(--brand-dark); text-transform: uppercase; letter-spacing: .06em; }
.result-card h4 { margin: 4px 0; font-size: 18px; }
.result-card .price { font-weight: 800; color: var(--ink); font-size: 20px; }
.result-card ul { margin: 6px 0 10px; padding-left: 18px; color: var(--ink-2); font-size: 15px; }
.alert { background: #fff4f0; border-left: 4px solid #e2492f; padding: 14px 16px; border-radius: 10px; font-size: 15px; }

/* Products */
.tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 30px; }
.tab { font: inherit; font-weight: 700; font-size: 15px; padding: 10px 20px; border-radius: 99px; border: 2px solid var(--line); background: #fff; cursor: pointer; }
.tab[aria-selected="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
.products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.product { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .2s, transform .2s; }
.product:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.product .pic { aspect-ratio: 1 / 1; background: #f7f3ee; display: grid; place-items: center; position: relative; }
.product .pic img { width: 100%; height: 100%; object-fit: contain; }
.product .pic .ph { font-size: 64px; }
.product .flag { position: absolute; top: 12px; left: 12px; background: var(--brand); color: #fff; font-size: 12px; font-weight: 800; padding: 4px 10px; border-radius: 99px; }
.product .body { padding: 18px; display: flex; flex-direction: column; flex: 1; }
.product h3 { font-size: 17px; margin-bottom: 4px; }
.product .for { font-size: 14px; color: var(--ink-2); margin-bottom: 10px; flex: 1; }
.product .meta { font-size: 13px; color: var(--muted); margin-bottom: 10px; }
.product .price { font-size: 20px; font-weight: 800; margin-bottom: 12px; }
.product .price small { font-size: 13px; color: var(--muted); font-weight: 600; }
.product .actions { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
.product .actions .btn { padding: 10px 12px; min-height: 44px; font-size: 14px; white-space: nowrap; }

/* Combos */
.combos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.combo { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; position: relative; }
.combo.best { border: 2px solid var(--brand); box-shadow: var(--shadow-lg); }
.combo .ribbon { position: absolute; top: -13px; left: 24px; background: var(--brand); color: #fff; font-size: 12px; font-weight: 800; padding: 4px 12px; border-radius: 99px; }
.combo .who { color: var(--green); font-weight: 700; font-size: 14px; }
.combo ul { padding-left: 18px; color: var(--ink-2); margin: 10px 0 16px; flex: 1; }
.combo .price { font-size: 24px; font-weight: 800; margin-bottom: 14px; }

/* Videos */
.videos { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.video { position: relative; border-radius: 16px; overflow: hidden; background: #000; cursor: pointer; border: 0; padding: 0; text-align: left; font: inherit; color: #fff; aspect-ratio: 9 / 16; }
.video.wide { aspect-ratio: 16 / 9; }
.video img { width: 100%; height: 100%; object-fit: cover; opacity: .85; transition: opacity .2s, transform .3s; }
.video:hover img { opacity: 1; transform: scale(1.03); }
.video .cap { position: absolute; left: 0; right: 0; bottom: 0; padding: 40px 12px 12px; background: linear-gradient(transparent, rgba(0, 0, 0, .85)); font-size: 14px; font-weight: 600; line-height: 1.35; }
.video .play { position: absolute; top: 50%; left: 50%; width: 56px; height: 56px; margin: -28px 0 0 -28px; border-radius: 50%; background: rgba(255, 117, 0, .92); display: grid; place-items: center; }
.video .play::after { content: ""; border-left: 16px solid #fff; border-top: 10px solid transparent; border-bottom: 10px solid transparent; margin-left: 4px; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video-filters { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 24px; }
.more-wrap { text-align: center; margin-top: 26px; }

/* Testimonials */
.testimonials { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.testi { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.testi .video { border-radius: 0; width: 100%; display: block; }
.testi figcaption { padding: 14px 16px; display: flex; flex-direction: column; gap: 2px; }
.testi figcaption span { color: var(--ink-2); font-size: 15px; }
@media (max-width: 900px) { .testimonials { grid-template-columns: 1fr; } }

/* Compare */
.compare { max-width: 940px; margin: 0 auto; overflow-x: auto; }
.compare table { width: 100%; border-collapse: separate; border-spacing: 0; background: #fff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); font-size: 16px; }
.compare th, .compare td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.compare thead th { background: #f7f3ee; font-size: 15px; }
.compare thead th.us { background: var(--brand); color: #fff; }
.compare tbody th { color: var(--ink-2); font-weight: 700; width: 22%; }
.compare td { color: var(--muted); }
.compare td.us { color: var(--ink); font-weight: 600; background: var(--brand-soft); }
.compare tr:last-child > * { border-bottom: 0; }
@media (max-width: 560px) { .compare th, .compare td { padding: 10px; font-size: 14px; } .compare tbody th { width: auto; } }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: s; }
.step { background: #fff; border-radius: var(--radius); padding: 24px; border: 1px solid var(--line); position: relative; }
.step::before { counter-increment: s; content: counter(s); display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--brand); color: #fff; font-weight: 800; margin-bottom: 12px; }
.step p { color: var(--ink-2); font-size: 15px; margin: 0; }

/* Gift */
.gift { background: linear-gradient(135deg, #ff7500, #ff9a3d); color: #fff; border-radius: 28px; padding: 44px; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.gift h2 { color: #fff; }
.gift .checklist li::before { background-color: #fff; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ff7500' stroke-width='3.5'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E"); }
.gift form, .form-card { background: #fff; color: var(--ink); border-radius: 20px; padding: 26px; box-shadow: var(--shadow-lg); }

/* Forms */
.field { margin-bottom: 14px; }
.field label { display: block; font-weight: 600; font-size: 15px; margin-bottom: 6px; }
.field input, .field select, .field textarea { width: 100%; font: inherit; font-size: 16px; padding: 13px 14px; border: 1.5px solid #ddd5cc; border-radius: 12px; background: #fff; color: var(--ink); }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(255, 117, 0, .18); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 13px; color: var(--ink-2); margin: 6px 0 16px; line-height: 1.5; }
.consent input { margin-top: 3px; width: 18px; height: 18px; accent-color: var(--brand); flex: none; }
.hp { position: absolute; left: -9999px; }
.form-msg { margin-top: 12px; font-size: 15px; }
.form-msg.ok { color: var(--green); font-weight: 700; }
.form-msg.err { color: #c0392b; }

/* Order */
.order-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 30px; align-items: start; }
.cart { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 24px; position: sticky; top: 96px; }
.cart-empty { color: var(--muted); font-size: 15px; }
.cart-line { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; align-items: center; padding: 12px 0; border-bottom: 1px dashed var(--line); font-size: 15px; }
.cart-line .name { font-weight: 600; }
.cart-line .unit { font-size: 13px; color: var(--muted); }
.qty { display: inline-flex; align-items: center; border: 1px solid var(--line); border-radius: 99px; }
.qty button { width: 32px; height: 32px; border: 0; background: none; font-size: 18px; cursor: pointer; color: var(--ink); }
.qty span { min-width: 22px; text-align: center; font-weight: 700; }
.cart-total { display: flex; justify-content: space-between; font-size: 20px; font-weight: 800; padding-top: 14px; }
.cart-note { font-size: 13px; color: var(--muted); margin-top: 8px; }
.add-select { display: flex; gap: 8px; margin-top: 14px; }
.order-grid > *, .quiz > *, .gift > *, .hero-grid > *, .grid-2 > * { min-width: 0; }
.add-select select { flex: 1; min-width: 0; width: 100%; font: inherit; font-size: 15px; padding: 10px; border-radius: 12px; border: 1.5px solid #ddd5cc; }
.guarantee { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 16px; }
.guarantee div { background: var(--green-soft); color: var(--green); border-radius: 12px; padding: 10px; font-size: 13px; font-weight: 700; text-align: center; }

/* FAQ */
.faq { max-width: 860px; margin: 0 auto; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 14px; margin-bottom: 10px; }
.faq summary { cursor: pointer; padding: 18px 52px 18px 20px; font-weight: 700; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); font-size: 26px; color: var(--brand); font-weight: 400; }
.faq details[open] summary::after { content: "–"; }
.faq .ans { padding: 0 20px 18px; color: var(--ink-2); }

/* Showroom */
.showrooms { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.showroom { background: #fff; border-radius: var(--radius); padding: 26px; border: 1px solid var(--line); }
.showroom h3 { display: flex; gap: 10px; align-items: center; }

/* Footer */
footer { background: var(--ink); color: #c8d1d8; padding: 56px 0 120px; font-size: 15px; }
footer a { color: #fff; text-decoration: none; }
footer a:hover { color: #ffb27a; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
footer h4 { color: #fff; font-size: 16px; }
footer ul { list-style: none; padding: 0; margin: 0; }
footer li { margin-bottom: 8px; }
.disclaimer { border-top: 1px solid #34414c; margin-top: 36px; padding-top: 20px; font-size: 13px; color: #93a1ad; }

/* Floating contact & sticky mobile bar */
.float-contact { position: fixed; right: 18px; bottom: 22px; z-index: 60; display: flex; flex-direction: column; gap: 10px; }
.float-contact a { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; box-shadow: var(--shadow-lg); text-decoration: none; color: #fff; font-weight: 800; font-size: 13px; }
.float-contact .zalo { background: #0068ff; }
.float-contact .call { background: var(--green); animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(18, 119, 90, .5); } 70% { box-shadow: 0 0 0 16px rgba(18, 119, 90, 0); } 100% { box-shadow: 0 0 0 0 rgba(18, 119, 90, 0); } }
.mobile-bar { display: none; }

/* Modal */
.modal { position: fixed; inset: 0; z-index: 100; display: none; align-items: center; justify-content: center; padding: 16px; background: rgba(20, 26, 31, .6); }
.modal.open { display: flex; }
.modal-box { background: #fff; border-radius: 22px; max-width: 460px; width: 100%; max-height: 92vh; overflow: auto; position: relative; }
.modal-box .top { background: linear-gradient(135deg, #ff7500, #ff9a3d); color: #fff; padding: 26px 26px 20px; border-radius: 22px 22px 0 0; }
.modal-box .top h3 { font-size: 22px; margin-bottom: 4px; }
.modal-box form { padding: 22px 26px 26px; }
.modal-close { position: absolute; top: 10px; right: 12px; background: rgba(255, 255, 255, .25); border: 0; width: 36px; height: 36px; border-radius: 50%; color: #fff; font-size: 22px; cursor: pointer; }
.toast { position: fixed; left: 50%; bottom: 90px; transform: translateX(-50%) translateY(20px); background: var(--ink); color: #fff; padding: 12px 20px; border-radius: 99px; font-size: 15px; opacity: 0; pointer-events: none; transition: .25s; z-index: 120; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s, transform .6s; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } html { scroll-behavior: auto; } .float-contact .call { animation: none; } }

/* Responsive */
@media (max-width: 1080px) {
  .products, .videos { grid-template-columns: repeat(3, 1fr); }
  .nav-links { display: none; }
  .menu-btn { display: block; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: #fff; padding: 16px 20px; gap: 4px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
  .nav-links.open a { display: block; padding: 10px 0; font-size: 17px; }
}
@media (max-width: 900px) {
  .nav-cta .btn { display: none; }
  .hero-grid, .grid-2, .quiz, .gift, .order-grid, .doctor { grid-template-columns: 1fr; }
  .hero-visual { max-width: 380px; margin: 0 auto; }
  .doctor { padding: 28px; }
  .doctor img { margin: 0 auto; max-width: 240px; }
  .stats, .grid-4, .steps { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .combos { grid-template-columns: 1fr; }
  .products, .videos { grid-template-columns: repeat(2, 1fr); }
  .foot-grid, .showrooms { grid-template-columns: 1fr; }
  .cart { position: static; }
  .float-contact { display: none; }
  .mobile-bar { display: grid; grid-template-columns: 1fr 1fr 1.3fr; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; background: #fff; border-top: 1px solid var(--line); box-shadow: 0 -6px 20px rgba(0, 0, 0, .08); padding: 8px 10px calc(8px + env(safe-area-inset-bottom)); gap: 8px; }
  .mobile-bar a { display: flex; align-items: center; justify-content: center; gap: 6px; min-height: 48px; border-radius: 12px; font-weight: 700; font-size: 15px; text-decoration: none; }
  .mobile-bar .m-call { background: var(--green-soft); color: var(--green); }
  .mobile-bar .m-zalo { background: #e8f0ff; color: #0068ff; }
  .mobile-bar .m-order { background: var(--brand); color: #fff; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .section { padding: 56px 0; }
  .hero { padding-top: 32px; }
  .hero h1 .hl { white-space: normal; }
  .hero-cta .btn { flex: 1 1 100%; }
  .quiz, .gift { padding: 26px 18px; border-radius: 22px; }
  .quiz-box { padding: 20px; }
  .products { gap: 12px; }
  .product .body { padding: 12px; }
  .product h3 { font-size: 15px; }
  .product .price { font-size: 17px; }
  .product .actions { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .stat b { font-size: 22px; }
  .stat { padding: 16px 10px; }
  .badge-float { font-size: 12px; padding: 8px 10px; }
  .badge-float b { font-size: 18px; }
  .guarantee { grid-template-columns: 1fr; }
}