/* Trạm học NÓI — bộ nhận diện web
   Màu lấy từ logo và ấn phẩm fanpage: kem nền logo, nâu đỏ chữ "NÓI", cam micro. */
:root {
  --cream: #FFF6EA;
  --cream-2: #FCEAD3;
  --paper: #FFFDF9;
  --ink: #2A0C05;
  --ink-2: #5B3A30;
  --maroon: #5A1608;
  --maroon-2: #7C2810;
  --orange: #EE7418;
  --orange-2: #FF9B3D;
  --amber: #FFC163;
  --line: rgba(90, 22, 8, .14);
  --zalo: #0068FF;
  --grad-dark: radial-gradient(120% 140% at 85% 0%, #C2501A 0%, #8A2C0D 38%, #4A1006 75%, #2E0903 100%);
  --grad-warm: linear-gradient(135deg, #FFB45C 0%, #F07A1C 55%, #C9501A 100%);
  --radius: 18px;
  --shadow: 0 18px 40px -18px rgba(90, 22, 8, .35);
  --display: 'Montserrat', 'Be Vietnam Pro', sans-serif;
  --body: 'Be Vietnam Pro', system-ui, sans-serif;
  --script: 'Dancing Script', cursive;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; font-family: var(--body); color: var(--ink); background: var(--cream); line-height: 1.65; font-size: 17px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--display); line-height: 1.12; margin: 0 0 .5em; letter-spacing: -.01em; text-wrap: balance; }
h1 { font-size: clamp(2.3rem, 5.4vw, 4rem); font-weight: 900; text-transform: uppercase; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.7rem); font-weight: 800; }
h3 { font-size: 1.2rem; font-weight: 800; }
p { margin: 0 0 1em; }
.wrap { width: min(1180px, 100% - 40px); margin-inline: auto; }
.de { font-family: var(--script); font-weight: 700; text-transform: none; font-size: 1.12em; letter-spacing: 0; color: var(--orange); padding: 0 .06em; }
.eyebrow { font-family: var(--display); font-weight: 800; font-size: .8rem; letter-spacing: .16em; text-transform: uppercase; color: var(--orange); margin-bottom: .8em; display: flex; align-items: center; gap: .6em; }
.eyebrow::before { content: ""; width: 26px; height: 3px; border-radius: 3px; background: currentColor; }
.eyebrow-light { color: var(--amber); }
.lead { font-size: 1.15rem; color: var(--ink-2); max-width: 36em; }
.section { padding: clamp(64px, 9vw, 120px) 0; }
.section-head { max-width: 760px; margin-bottom: 44px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center .eyebrow { justify-content: center; }
.muted { color: var(--ink-2); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5em; font-family: var(--display); font-weight: 800; font-size: .98rem; padding: 15px 26px; border-radius: 999px; text-decoration: none; border: 2px solid transparent; cursor: pointer; transition: transform .15s ease, box-shadow .15s ease, background .15s; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--grad-warm); color: #fff; box-shadow: 0 12px 26px -12px rgba(238, 116, 24, .8); }
.btn-dark { background: var(--maroon); color: #fff; }
.btn-ghost { border-color: var(--maroon); color: var(--maroon); background: transparent; }
.btn-ghost-light { border-color: rgba(255,255,255,.6); color: #fff; }
.btn-zalo { background: #fff; color: var(--maroon); }
.btn-sm { padding: 10px 18px; font-size: .88rem; }

/* Header */
.topbar { position: sticky; top: 0; z-index: 50; background: rgba(255, 246, 234, .92); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.topbar-in { display: flex; align-items: center; gap: 28px; min-height: 76px; }
.brand img { height: 52px; width: auto; }
.mainnav { display: flex; align-items: center; gap: 26px; margin-left: auto; font-weight: 600; font-size: .95rem; }
.mainnav > a, .menu-btn { text-decoration: none; color: var(--ink); background: none; border: 0; font: inherit; cursor: pointer; padding: 8px 0; }
.mainnav > a:hover, .menu-btn:hover { color: var(--orange); }
.has-menu { position: relative; }
.menu { position: absolute; top: calc(100% + 10px); left: -20px; width: 340px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 10px; display: none; }
.has-menu.open .menu, .has-menu:hover .menu { display: block; }
.menu a { display: flex; flex-direction: column; padding: 10px 14px; border-radius: 12px; text-decoration: none; }
.menu a:hover, .menu a[aria-current] { background: var(--cream-2); }
.menu .st-name { font-weight: 700; }
.menu .st-sub { font-size: .82rem; color: var(--ink-2); }
.nav-cta { display: none; }
.burger { display: none; margin-left: auto; width: 44px; height: 44px; border: 0; background: none; cursor: pointer; position: relative; }
.burger span { position: absolute; left: 10px; right: 10px; height: 2.5px; background: var(--maroon); border-radius: 2px; transition: .2s; }
.burger span:first-child { top: 17px; } .burger span:last-child { top: 25px; }
.nav-open .burger span:first-child { top: 21px; transform: rotate(45deg); }
.nav-open .burger span:last-child { top: 21px; transform: rotate(-45deg); }

/* Hero (home) */
.hero { position: relative; padding: clamp(40px, 6vw, 80px) 0 clamp(60px, 8vw, 100px); overflow: hidden; }
.hero::before { content: ""; position: absolute; right: -10%; top: -30%; width: 70%; aspect-ratio: 1; background: radial-gradient(circle, rgba(255, 155, 61, .35), transparent 62%); pointer-events: none; }
.hero-in { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(30px, 5vw, 70px); align-items: center; position: relative; }
.hero h1 { color: var(--maroon); }
.hero h1 .hl { color: var(--orange); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 22px; }
.hero-note { font-size: .92rem; color: var(--ink-2); }
.hero-visual { position: relative; }
.hero-photo { border-radius: 28px 28px 28px 120px; overflow: hidden; box-shadow: var(--shadow); aspect-ratio: 4 / 4.4; }
.hero-photo img { width: 100%; height: 100%; object-fit: cover; object-position: 60% center; }
.next-class { position: absolute; left: -26px; bottom: 34px; background: var(--paper); border-radius: 16px; padding: 14px 18px; box-shadow: var(--shadow); max-width: 270px; border-left: 5px solid var(--orange); }
.next-class small { display: block; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; font-size: .7rem; color: var(--orange); }
.next-class strong { font-family: var(--display); font-size: 1.02rem; display: block; line-height: 1.25; margin: 2px 0; }
.next-class span { font-size: .86rem; color: var(--ink-2); }
.mic-badge { position: absolute; right: -14px; top: 26px; width: 92px; height: 92px; border-radius: 50%; background: var(--grad-warm); color: #fff; display: grid; place-items: center; text-align: center; font-family: var(--display); font-weight: 900; font-size: .78rem; line-height: 1.15; box-shadow: var(--shadow); transform: rotate(8deg); }
.mic-badge b { font-size: 1.5rem; display: block; }

/* Proof strip */
.proof { background: var(--maroon); color: #fff; }
.proof-in { display: grid; grid-template-columns: repeat(4, 1fr); }
.proof-item { padding: 30px 24px; border-left: 1px solid rgba(255,255,255,.12); }
.proof-item:first-child { border-left: 0; }
.proof-item b { display: block; font-family: var(--display); font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 900; color: var(--amber); line-height: 1.1; }
.proof-item span { font-size: .92rem; opacity: .85; }

/* Station line (tuyến tàu) */
.route { background: var(--paper); }
.line { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(6, 1fr); position: relative; counter-reset: st; }
.line::before { content: ""; position: absolute; left: 4%; right: 4%; top: 31px; height: 8px; border-radius: 8px; background: var(--grad-warm); }
.line li { position: relative; text-align: center; padding: 0 6px; }
.line a { display: flex; flex-direction: column; align-items: center; text-decoration: none; gap: 4px; padding-bottom: 6px; }
.line .dot { width: 70px; height: 70px; border-radius: 50%; background: var(--paper); border: 6px solid var(--orange); display: grid; place-items: center; font-family: var(--display); font-weight: 900; color: var(--maroon); font-size: 1.05rem; position: relative; z-index: 1; transition: .2s; margin-bottom: 10px; }
.line a:hover .dot, .line .is-here .dot { background: var(--maroon); color: #fff; border-color: var(--amber); transform: scale(1.06); }
.line .st-name { font-family: var(--display); font-weight: 800; font-size: .98rem; line-height: 1.2; color: var(--maroon); }
.line .st-sub { font-size: .82rem; color: var(--ink-2); }
.here-tag { margin-top: 6px; font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; background: var(--orange); color: #fff; border-radius: 99px; padding: 2px 10px; }

/* Finder */
.finder { margin-top: 64px; background: var(--cream); border: 1px solid var(--line); border-radius: 26px; padding: clamp(24px, 4vw, 44px); display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px; align-items: start; }
.finder h3 { font-size: 1.5rem; color: var(--maroon); }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { font: inherit; font-weight: 600; font-size: .95rem; padding: 11px 18px; border-radius: 999px; border: 1.5px solid var(--line); background: var(--paper); cursor: pointer; color: var(--ink); transition: .15s; }
.chip:hover { border-color: var(--orange); }
.chip[aria-pressed="true"] { background: var(--maroon); color: #fff; border-color: var(--maroon); }
.finder-result { margin-top: 22px; padding: 22px; border-radius: 18px; background: var(--paper); border: 1.5px dashed var(--orange); display: none; }
.finder-result.show { display: block; animation: rise .3s ease; }
.finder-result h4 { font-family: var(--display); font-size: 1.25rem; margin: 0 0 .3em; color: var(--maroon); }
.finder-result .cta-pair { margin-top: 14px; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* Course cards */
.courses { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.course-card { background: var(--paper); border-radius: var(--radius); border: 1px solid var(--line); overflow: hidden; display: flex; flex-direction: column; text-decoration: none; transition: transform .2s, box-shadow .2s; }
.course-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.course-card .cc-img { aspect-ratio: 16 / 10; overflow: hidden; position: relative; }
.course-card .cc-img img { width: 100%; height: 100%; object-fit: cover; }
.cc-num { position: absolute; top: 14px; left: 14px; background: var(--maroon); color: #fff; font-family: var(--display); font-weight: 900; border-radius: 99px; padding: 4px 12px; font-size: .8rem; }
.course-card .cc-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.course-card h3 { color: var(--maroon); font-size: 1.3rem; }
.course-card p { color: var(--ink-2); font-size: .96rem; flex: 1; }
.cc-meta { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 14px; }
.tag { font-size: .76rem; font-weight: 700; padding: 4px 10px; border-radius: 99px; background: var(--cream-2); color: var(--maroon-2); }
.cc-link { font-family: var(--display); font-weight: 800; color: var(--orange); font-size: .92rem; }

/* Pillars */
.dark { background: var(--grad-dark); color: #fff; }
.dark h2, .dark h3 { color: #fff; }
.dark .lead, .dark .muted { color: rgba(255,255,255,.8); }
.pillars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.pillar { border-radius: var(--radius); overflow: hidden; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); }
.pillar img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }
.pillar div { padding: 20px 20px 24px; }
.pillar h3 { font-size: 1.15rem; text-transform: uppercase; letter-spacing: .04em; }
.pillar h3 span { color: var(--amber); margin-right: .4em; }
.pillar p { font-size: .94rem; color: rgba(255,255,255,.8); margin: 0; }

/* Team */
.team { display: grid; grid-template-columns: 1.5fr repeat(4, 1fr); grid-template-rows: auto auto; gap: 16px; }
.motto-card { background: var(--grad-warm); border: 0; display: flex; align-items: flex-end; }
.motto-card div { padding: 20px; }
.motto-card .role { font-family: var(--script); font-size: 1.25rem; color: #fff; display: block; margin-bottom: 6px; }
.motto-card b { color: #fff; font-size: 1.1rem; text-transform: uppercase; line-height: 1.35; }
.member { background: var(--paper); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.member img { width: 100%; aspect-ratio: 5 / 4; object-fit: cover; object-position: center 20%; }
.member div { padding: 14px 16px 16px; }
.member b { font-family: var(--display); font-size: 1rem; display: block; color: var(--maroon); }
.member span { font-size: .86rem; color: var(--ink-2); }
.member.lead-member { grid-row: span 2; display: flex; flex-direction: column; background: var(--maroon); color: #fff; border: 0; }
.member.lead-member img { aspect-ratio: auto; flex: 1; min-height: 0; object-position: center top; }
.member.lead-member b { color: #fff; font-size: 1.3rem; }
.member.lead-member span { color: rgba(255,255,255,.8); }
.member.lead-member .role { font-family: var(--script); color: var(--amber); font-size: 1.3rem; display: block; }
.team-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 30px; }
.value { padding: 22px; border-radius: var(--radius); background: var(--cream-2); }
.value h3 { color: var(--maroon); font-size: 1.05rem; }
.value p { margin: 0; font-size: .95rem; color: var(--ink-2); }

/* Stories */
.story { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 60px); align-items: center; }
.story-photo { border-radius: 28px 120px 28px 28px; overflow: hidden; box-shadow: var(--shadow); }
.story blockquote { margin: 0; font-family: var(--display); font-size: clamp(1.4rem, 2.6vw, 2rem); font-weight: 800; line-height: 1.25; color: var(--maroon); }
.story blockquote::before { content: "“"; display: block; font-size: 4em; line-height: .6; color: var(--orange); }
.story cite { display: block; margin-top: 18px; font-style: normal; font-weight: 700; }
.story cite small { display: block; font-weight: 500; color: var(--ink-2); }
.reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 56px; }
.review { background: var(--paper); border-radius: var(--radius); padding: 24px; border: 1px solid var(--line); }
.review .stars { color: var(--orange); letter-spacing: 3px; font-size: .9rem; }
.review p { margin: 10px 0 14px; }
.review footer { font-size: .86rem; color: var(--ink-2); }
.review footer b { color: var(--ink); }

/* Schedule */
.schedule { display: grid; gap: 12px; }
.sch-row { display: grid; grid-template-columns: 120px 1.4fr 1fr 1fr auto; align-items: center; gap: 18px; background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 16px 20px; }
.sch-date { font-family: var(--display); font-weight: 900; color: var(--maroon); line-height: 1; }
.sch-date b { font-size: 2rem; display: block; }
.sch-date small { display: block; white-space: nowrap; font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--orange); }
.sch-course b { display: block; font-family: var(--display); color: var(--maroon); }
.sch-course span { font-size: .85rem; color: var(--ink-2); }
.sch-when { font-size: .95rem; }
.sch-empty { padding: 24px; border-radius: 16px; background: var(--paper); border: 1px dashed var(--line); }
.pill-mode { display: inline-block; font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; padding: 3px 10px; border-radius: 99px; background: var(--cream-2); color: var(--maroon-2); }
.pill-mode.online { background: #E5F0FF; color: #0B4FB3; }

/* Gallery */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 210px; grid-auto-flow: dense; gap: 12px; }
.gallery img { width: 100%; height: 100%; object-fit: cover; border-radius: 14px; }
.gallery .tall { grid-row: span 2; }
.gallery .wide { grid-column: span 2; }

/* FAQ */
.faq { max-width: 860px; margin-inline: auto; }
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary { cursor: pointer; list-style: none; font-family: var(--display); font-weight: 800; font-size: 1.08rem; padding: 18px 40px 18px 0; position: relative; color: var(--maroon); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 12px; font-size: 1.6rem; color: var(--orange); transition: .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--ink-2); padding-right: 30px; }

/* Course page */
.course-hero { background: var(--grad-dark); color: #fff; padding: clamp(40px, 6vw, 80px) 0 clamp(50px, 7vw, 90px); position: relative; overflow: hidden; }
.course-hero-in { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(28px, 5vw, 60px); align-items: center; }
.course-hero h1 { color: #fff; }
.course-hero h1 .de { color: var(--amber); }
.course-hero .lead { color: rgba(255,255,255,.85); }
.crumbs { font-size: .85rem; margin-bottom: 18px; opacity: .8; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }
.course-facts { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0 28px; }
.fact { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); border-radius: 12px; padding: 10px 14px; font-size: .9rem; }
.fact b { display: block; font-family: var(--display); color: var(--amber); font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; }
.course-hero-photo { border-radius: 26px 26px 26px 110px; overflow: hidden; box-shadow: 0 30px 60px -25px rgba(0,0,0,.6); aspect-ratio: 4 / 4; }
.course-hero-photo img { width: 100%; height: 100%; object-fit: cover; }
.course-hero .cta-pair .btn-ghost-light { border-color: rgba(255,255,255,.5); }
.line-mini { padding: 34px 0 26px; background: var(--paper); border-bottom: 1px solid var(--line); overflow-x: auto; }
.line-mini .line { min-width: 760px; }
.line-mini .line::before { top: 22px; height: 6px; }
.line-mini .dot { width: 50px; height: 50px; border-width: 5px; font-size: .85rem; }
.line-mini .st-name { font-size: .84rem; }
.line-mini .st-sub { display: none; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.checks li { padding-left: 38px; position: relative; }
.checks li::before { content: ""; position: absolute; left: 0; top: 3px; width: 24px; height: 24px; border-radius: 50%; background: var(--grad-warm); }
.checks li::after { content: ""; position: absolute; left: 8px; top: 9px; width: 8px; height: 5px; border-left: 2.5px solid #fff; border-bottom: 2.5px solid #fff; transform: rotate(-45deg); }
.checks b { color: var(--maroon); }
.for-who { display: grid; gap: 14px; }
.for-who div { background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; display: flex; gap: 14px; align-items: flex-start; }
.for-who i { font-style: normal; font-size: 1.4rem; line-height: 1.2; }
.levels { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.level { background: var(--paper); border-radius: var(--radius); padding: 26px; border: 1px solid var(--line); position: relative; }
.level .lv { font-family: var(--display); font-weight: 900; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--orange); }
.level h3 { color: var(--maroon); font-size: 1.4rem; margin-top: 6px; }
.level p { margin: 0; color: var(--ink-2); font-size: .95rem; }
.note-box { background: var(--cream-2); border-radius: 16px; padding: 18px 22px; font-size: .95rem; color: var(--ink-2); }
.cta-pair { display: flex; flex-wrap: wrap; gap: 12px; }

/* Final CTA + footer */
.final-cta { background: var(--grad-dark); color: #fff; padding: clamp(56px, 8vw, 96px) 0; }
.final-cta-in { display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: center; }
.final-cta h2 { color: #fff; }
.final-cta p { color: rgba(255,255,255,.82); max-width: 36em; }
.final-cta .cta-pair { justify-content: flex-end; }
.footer { background: #220803; color: rgba(255,255,255,.75); padding: 60px 0 0; font-size: .94rem; }
.footer-in { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr .9fr; gap: 36px; }
.footer h3 { color: #fff; font-size: .9rem; text-transform: uppercase; letter-spacing: .12em; }
.footer-brand img { height: 70px; width: auto; margin-bottom: 14px; }
.motto { font-family: var(--script); font-size: 1.3rem; color: var(--amber); }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--amber); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 44px; padding: 20px 0 26px; font-size: .84rem; }

.sticky-cta { display: none; }
.toast { position: fixed; left: 50%; bottom: 90px; transform: translate(-50%, 20px); background: var(--ink); color: #fff; padding: 12px 20px; border-radius: 12px; font-size: .92rem; opacity: 0; pointer-events: none; transition: .25s; z-index: 80; max-width: calc(100% - 32px); text-align: center; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* Responsive */
@media (max-width: 1020px) {
  .courses { grid-template-columns: repeat(2, 1fr); }
  .pillars { grid-template-columns: repeat(2, 1fr); }
  .team { grid-template-columns: repeat(4, 1fr); }
  .member.lead-member { grid-column: span 4; grid-row: auto; flex-direction: row; }
  .member.lead-member img { width: 45%; flex: none; aspect-ratio: 1; }
  .member.lead-member div { align-self: flex-end; padding: 24px; }
  .footer-in { grid-template-columns: 1fr 1fr; }
  .sch-row { grid-template-columns: 90px 1fr auto; }
  .sch-row .sch-when { grid-column: 2; }
  .sch-row .sch-k { display: none; }
}
@media (max-width: 860px) {
  body { font-size: 16px; padding-bottom: calc(84px + env(safe-area-inset-bottom)); }
  .mainnav, .topbar-in > .btn { display: none; }
  .burger { display: block; }
  /* Menu mobile: tấm phủ kín màn hình dưới topbar, trang phía sau không cuộn */
  :root:has(body.nav-open) { overflow: hidden; }
  .nav-open .topbar { background: var(--paper); }
  .nav-open .mainnav { display: flex; position: absolute; top: 100%; left: 0; right: 0; height: calc(100vh - 77px); height: calc(100dvh - 77px); flex-direction: column; align-items: stretch; gap: 0; margin: 0; background: var(--paper); padding: 22px 20px calc(24px + env(safe-area-inset-bottom)); overflow-y: auto; overscroll-behavior: contain; animation: rise .22s ease; }
  .nav-open .menu-btn { pointer-events: none; padding: 0 0 6px; text-align: left; font-family: var(--display); font-weight: 800; font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--orange); }
  .nav-open .menu-btn span { display: none; }
  .nav-open .mainnav > * { flex-shrink: 0; }
  .nav-open .menu { position: relative; top: auto; left: auto; display: grid; gap: 2px; width: auto; box-shadow: none; border: 0; border-radius: 0; padding: 4px 0 14px; margin: 0 -14px; background: none; counter-reset: st; }
  .nav-open .menu::before { content: ""; position: absolute; left: 30px; top: 30px; bottom: 44px; width: 3px; border-radius: 3px; background: var(--grad-warm); opacity: .5; }
  .nav-open .menu a { display: grid; grid-template-columns: 34px 1fr; column-gap: 14px; align-items: center; padding: 9px 14px; counter-increment: st; }
  .nav-open .menu a::before { content: counter(st, decimal-leading-zero); grid-row: span 2; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: var(--paper); border: 3px solid var(--orange); font-family: var(--display); font-weight: 900; font-size: .72rem; color: var(--maroon); position: relative; }
  .nav-open .menu a[aria-current]::before { background: var(--maroon); color: #fff; border-color: var(--amber); }
  .nav-open .menu .st-name { font-size: 1rem; line-height: 1.25; }
  .nav-open .menu .st-sub { font-size: .8rem; line-height: 1.3; }
  .nav-open .mainnav > a { display: flex; justify-content: space-between; align-items: center; padding: 15px 0; border-top: 1px solid var(--line); font-family: var(--display); font-weight: 700; font-size: 1.02rem; color: var(--maroon); }
  .nav-open .mainnav > a::after { content: "→"; color: var(--orange); }
  .nav-open .nav-cta { display: grid; gap: 10px; margin-top: auto; padding-top: 22px; border-top: 1px solid var(--line); }
  .hero-in, .course-hero-in, .story, .two-col, .finder, .final-cta-in { grid-template-columns: 1fr; }
  .hero-visual { max-width: 520px; }
  .next-class { left: 12px; }
  .mic-badge { right: 8px; }
  .proof-in { grid-template-columns: repeat(2, 1fr); }
  .proof-item:nth-child(3) { border-left: 0; }
  .proof-item { border-top: 1px solid rgba(255,255,255,.12); }
  .line { grid-template-columns: 1fr; gap: 6px; }
  .line::before { left: 33px; right: auto; width: 8px; top: 30px; bottom: 30px; height: auto; }
  .line li { text-align: left; }
  .line a { flex-direction: row; flex-wrap: wrap; column-gap: 16px; }
  .line .dot { margin: 0; flex: none; }
  .line .st-name { flex: 1; }
  .line .st-sub { width: 100%; padding-left: 86px; margin-top: -26px; }
  .line-mini .line { grid-template-columns: repeat(6, 1fr); }
  .line-mini .line::before { left: 4%; right: 4%; width: auto; top: 22px; bottom: auto; height: 6px; }
  .line-mini .line li { text-align: center; }
  .line-mini .line a { flex-direction: column; }
  .line-mini .st-name { flex: none; }
  .courses, .reviews, .team-values { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 160px; }
  .final-cta .cta-pair { justify-content: flex-start; }
  /* Thanh liên hệ nổi: 1 nút chính + 2 nút tròn, chừa vùng home indicator của iPhone */
  .sticky-cta { display: flex; gap: 8px; position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); z-index: 60; padding: 6px; border-radius: 999px; background: rgba(42, 12, 5, .9); backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px); box-shadow: 0 14px 34px -10px rgba(42, 12, 5, .55), inset 0 0 0 1px rgba(255,255,255,.08); transition: transform .3s ease, opacity .3s ease; }
  .sticky-cta.is-hidden, .nav-open .sticky-cta { transform: translateY(calc(100% + 30px)); opacity: 0; pointer-events: none; }
  .sticky-cta a { display: inline-flex; align-items: center; justify-content: center; gap: 8px; color: #fff; text-decoration: none; border-radius: 999px; }
  .sticky-cta svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }
  .sc-main { flex: 1; height: 48px; background: var(--grad-warm); font-family: var(--display); font-weight: 800; font-size: .95rem; box-shadow: 0 8px 18px -10px rgba(238, 116, 24, .9); }
  .sc-icon { width: 48px; height: 48px; flex: none; background: rgba(255,255,255,.1); }
  .sc-icon:active, .sc-main:active { transform: scale(.96); }
}
@media (max-width: 560px) {
  .pillars { grid-template-columns: 1fr; }
  .team { grid-template-columns: repeat(2, 1fr); }
  .member.lead-member { grid-column: span 2; flex-direction: column; }
  .member.lead-member img { width: 100%; aspect-ratio: 1; }
  .footer-in { grid-template-columns: 1fr; }
  .sch-row { grid-template-columns: 74px 1fr; }
  .sch-row .btn { grid-column: 1 / -1; }
  .sch-date b { font-size: 1.6rem; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } html { scroll-behavior: auto; } }