:root {
  --brand: #ff5c40;
  --brand-2: #ff8563;
  --brand-3: #ffb199;
  --brand-dark: #e5442a;
  --ink: #18181b;
  --ink-2: #3f3f46;
  --muted: #52525b;
  --line: #ececef;
  --bg: #ffffff;
  --soft: #fff5f2;
  --grad: linear-gradient(135deg, var(--brand), var(--brand-2));
  --radius: 20px;
  --shadow: 0 1px 2px rgba(24,24,27,.04), 0 12px 32px -12px rgba(24,24,27,.14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: Montserrat, system-ui, -apple-system, 'Segoe UI', sans-serif; color: var(--ink); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { line-height: 1.18; margin: 0 0 .5em; letter-spacing: -.025em; text-wrap: balance; }
p { text-wrap: pretty; }
:focus-visible { outline: 3px solid rgba(255,92,64,.45); outline-offset: 3px; border-radius: 8px; }
.wrap { width: min(1200px, 100% - 32px); margin-inline: auto; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; background: #fff; padding: 8px 12px; z-index: 99; }
.section { padding: 72px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 40px; }
.section-head h2 { font-size: clamp(26px, 3.6vw, 40px); font-weight: 800; }
.section-head p { color: var(--muted); font-size: 17px; margin: 0; }

/* Topbar */
.topbar { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.78); backdrop-filter: saturate(180%) blur(14px); -webkit-backdrop-filter: saturate(180%) blur(14px); border-bottom: 1px solid rgba(236,236,239,.8); }
.bar { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand img { height: 30px; width: auto; }
.nav { display: flex; gap: 4px; margin-left: 12px; }
.nav a { text-decoration: none; font-weight: 500; font-size: 15px; color: var(--muted); padding: 8px 12px; border-radius: 10px; transition: background .15s, color .15s; }
.nav a:hover { color: var(--ink); background: #f4f4f5; }
.bar-end { margin-left: auto; display: flex; align-items: center; gap: 12px; }
/* details.lang: bỏ hết style FAQ chung của details/summary (viền, padding, dấu +) */
details.lang, details.lang[open] { position: relative; border: 0; border-radius: 0; padding: 0; margin: 0; background: none; box-shadow: none; }
details.lang summary::after { content: none; }
details.lang summary { list-style: none; display: flex; align-items: center; justify-content: flex-start; gap: 4px; height: 36px; padding: 0 10px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--muted); cursor: pointer; white-space: nowrap; }
.lang summary::-webkit-details-marker { display: none; }
.lang summary:hover, .lang[open] summary { background: #f4f4f5; color: var(--ink); }
.lang summary svg { width: 18px; height: 18px; flex: none; }
.lang summary svg.chev { width: 14px; height: 14px; transition: transform .2s; }
.lang[open] summary svg.chev { transform: rotate(180deg); }
.lang-menu { position: absolute; right: 0; top: calc(100% + 8px); z-index: 50; width: 176px; padding: 4px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 10px 30px rgba(24,24,27,.12); }
.lang-menu a { display: flex; align-items: center; justify-content: space-between; height: 40px; padding: 0 12px; border-radius: 12px; font-size: 14px; color: var(--ink-2); text-decoration: none; }
.lang-menu a:hover { background: #fafafa; }
.lang-menu a[aria-current] { background: rgba(255,92,64,.1); color: var(--brand); font-weight: 600; }
.lang-menu small { font-size: 12px; color: #a1a1aa; text-transform: uppercase; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 22px; border-radius: 999px; font-weight: 600; font-size: 15px; text-decoration: none; border: 1px solid transparent; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; white-space: nowrap; }
.btn .i { width: 18px; height: 18px; transition: transform .18s ease; }
.btn:hover { transform: translateY(-2px); }
.btn:hover .i { transform: translateX(3px); }
.btn-sm { min-height: 38px; padding: 0 16px; font-size: 14px; }
.btn-lg { min-height: 54px; padding: 0 28px; font-size: 16px; }
.btn-primary { color: #fff; background: var(--grad); box-shadow: 0 10px 28px -10px rgba(255,92,64,.7), inset 0 1px 0 rgba(255,255,255,.25); }
.btn-primary:hover { box-shadow: 0 14px 34px -10px rgba(255,92,64,.8), inset 0 1px 0 rgba(255,255,255,.25); }
.btn-ghost { background: #fff; border-color: var(--line); box-shadow: var(--shadow); }
.btn-light { background: #fff; color: var(--ink); }
.btn-outline-light { color: #fff; border-color: rgba(255,255,255,.45); }
.btn-outline-light:hover { background: rgba(255,255,255,.1); }
.btn-dark { background: var(--ink); color: #fff; }
.link { color: var(--brand-dark); font-weight: 600; font-size: 14px; }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 72px 0 88px; }
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .55; }
.b1 { width: 520px; height: 520px; background: #ffc4b3; top: -180px; left: -120px; }
.b2 { width: 560px; height: 560px; background: #ffe0d6; top: -60px; right: -160px; }
.grid-bg { position: absolute; inset: 0; background-image: linear-gradient(rgba(24,24,27,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(24,24,27,.045) 1px, transparent 1px); background-size: 44px 44px; mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%); }
.hero-inner { position: relative; display: grid; grid-template-columns: 1.08fr .92fr; gap: 56px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--brand-dark); background: rgba(255,255,255,.8); border: 1px solid #ffd9cd; padding: 7px 14px; border-radius: 999px; margin: 0 0 22px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 4px rgba(255,92,64,.18); }
.hero h1 { font-size: clamp(36px, 5.4vw, 64px); font-weight: 800; letter-spacing: -.035em; }
.hero h1 em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: clamp(16px, 1.7vw, 19px); color: var(--muted); max-width: 580px; margin: 0 0 32px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; }
.trust { list-style: none; padding: 0; margin: 32px 0 0; display: flex; flex-wrap: wrap; gap: 10px 22px; color: var(--ink-2); font-size: 14px; font-weight: 500; }
.trust li { display: flex; align-items: center; gap: 8px; }
.trust svg { width: 18px; height: 18px; color: var(--brand); }

/* Hero visual */
.hero-visual { position: relative; height: 480px; }
.ticket { position: absolute; top: 30px; left: 50%; width: 330px; margin-left: -165px; background: #fff; border-radius: 26px; box-shadow: 0 2px 4px rgba(24,24,27,.04), 0 40px 80px -24px rgba(229,68,42,.35); overflow: hidden; transform: rotate(-4deg); animation: floatY 7s ease-in-out infinite; }
.ticket-top { display: flex; align-items: center; gap: 12px; padding: 20px 22px; background: var(--grad); color: #fff; }
.ticket-top img { width: 32px; height: 32px; background: #fff; border-radius: 50%; padding: 2px; }
.ticket-top small { display: block; font-size: 11px; opacity: .85; text-transform: uppercase; letter-spacing: .08em; }
.ticket-top strong { font-size: 18px; }
.pill { margin-left: auto; background: rgba(255,255,255,.22); border: 1px solid rgba(255,255,255,.4); padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.ticket-body { display: flex; gap: 16px; padding: 22px; align-items: center; }
.ticket dl { margin: 0; display: grid; gap: 10px; flex: 1; }
.ticket dt { font-size: 11px; color: #a1a1aa; text-transform: uppercase; letter-spacing: .06em; }
.ticket dd { margin: 0; font-weight: 700; font-size: 14px; }
.qr { width: 112px; padding: 8px; border: 1px solid var(--line); border-radius: 14px; color: var(--ink); }
.ticket-cut { position: relative; border-top: 2px dashed var(--line); margin: 0 18px; }
.ticket-cut::before, .ticket-cut::after { content: ''; position: absolute; top: -13px; width: 24px; height: 24px; border-radius: 50%; background: #fdf1ed; }
.ticket-cut::before { left: -32px; } .ticket-cut::after { right: -32px; }
.ticket-foot { display: flex; justify-content: space-between; padding: 14px 22px 18px; font-size: 12px; color: #a1a1aa; font-weight: 600; letter-spacing: .04em; }
.float { position: absolute; background: rgba(255,255,255,.92); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,.9); border-radius: 18px; box-shadow: var(--shadow); padding: 14px 16px; font-size: 14px; }
.f-check { top: 8px; right: 0; display: flex; align-items: center; gap: 10px; font-weight: 700; animation: floatY 6s ease-in-out -2s infinite; }
.f-check svg { width: 28px; height: 28px; padding: 5px; border-radius: 50%; background: #16a34a; color: #fff; stroke-width: 2.6; }
.f-poll { bottom: 20px; left: 0; width: 250px; animation: floatY 8s ease-in-out -4s infinite; }
.f-poll strong { display: block; margin-bottom: 10px; font-size: 13px; }
.bar-row { display: grid; grid-template-columns: auto 1fr 36px; white-space: nowrap; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); margin-top: 6px; }
.bar-row i { height: 8px; border-radius: 99px; background: #f4f4f5; position: relative; overflow: hidden; }
.bar-row i::after { content: ''; position: absolute; inset: 0; width: var(--w); border-radius: inherit; background: var(--grad); }
.bar-row b { color: var(--ink); text-align: right; }
@keyframes floatY { 0%, 100% { translate: 0 0; } 50% { translate: 0 -10px; } }

/* Two audience cards */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.card { position: relative; scroll-margin-top: 92px; border-radius: 30px; padding: 44px; display: flex; flex-direction: column; overflow: hidden; }
.card h2 { font-size: clamp(24px, 2.8vw, 32px); font-weight: 800; }
.card > p { color: var(--muted); margin-top: 0; }
.card-buyer { background: linear-gradient(160deg, #fff8f5 0%, #ffe8e0 100%); border: 1px solid #ffdcd1; }
.card-org { background: radial-gradient(120% 90% at 100% 0%, #4a2217 0%, #1c1414 45%, #141416 100%); color: #fff; }
.card-org::after { content: ''; position: absolute; width: 320px; height: 320px; right: -120px; top: -120px; background: radial-gradient(closest-side, rgba(255,92,64,.35), transparent); pointer-events: none; }
.card-org > p { color: #d4d4d8; }
.tag { align-self: flex-start; font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 6px 12px; border-radius: 999px; background: #fff; color: var(--brand-dark); margin-bottom: 18px; }
.card-org .tag { background: rgba(255,255,255,.1); color: var(--brand-3); }
.feat { list-style: none; padding: 0; margin: 10px 0 32px; display: grid; gap: 12px; }
.feat li { display: flex; gap: 12px; align-items: flex-start; font-weight: 500; }
.feat svg { flex: none; width: 22px; height: 22px; padding: 3px; border-radius: 50%; color: #fff; background: var(--grad); stroke-width: 2.6; margin-top: 1px; }
.card-ctas { margin-top: auto; display: flex; flex-wrap: wrap; gap: 12px; position: relative; z-index: 1; }

/* Bento features */
#features { scroll-margin-top: 72px; }
/* Features: nhóm tính năng */
.tile-icon { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; background: var(--soft); color: var(--brand); }
.tile-icon svg { width: 24px; height: 24px; }
.features { padding-bottom: 24px; }
.fnav { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: -8px auto 56px; max-width: 980px; }
.fnav a { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--ink-2); text-decoration: none; background: #fff; transition: border-color .15s, color .15s, background .15s; }
.fnav a b { font-size: 11px; color: var(--brand); font-variant-numeric: tabular-nums; }
.fnav a:hover { border-color: #ffd0c2; background: var(--soft); color: var(--ink); }
.fgroup { display: grid; grid-template-columns: 300px 1fr; gap: 40px; padding: 48px 0; border-top: 1px solid var(--line); scroll-margin-top: 84px; }
.fgroup-head { position: sticky; top: 100px; align-self: start; }
.fnum { display: block; font-size: 13px; font-weight: 700; letter-spacing: .12em; color: var(--brand); margin-bottom: 10px; }
.fgroup-head h3, .stage-head h3 { font-size: clamp(22px, 2.4vw, 28px); font-weight: 800; }
.fgroup-head p { color: var(--muted); margin: 0; font-size: 15px; }
.fgrid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.fcard { position: relative; padding: 24px; border-radius: 20px; background: #fff; border: 1px solid var(--line); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.fcard:hover { transform: translateY(-3px); border-color: #ffd0c2; box-shadow: 0 1px 2px rgba(24,24,27,.04), 0 20px 40px -22px rgba(229,68,42,.35); }
.fcard .tile-icon { width: 42px; height: 42px; border-radius: 12px; margin-bottom: 14px; }
.fcard .tile-icon svg { width: 21px; height: 21px; }
.fcard h4, .stage-card h4 { font-size: 17px; margin: 0 0 6px; letter-spacing: -.02em; line-height: 1.3; }
.fcard p { margin: 0; color: var(--muted); font-size: 14.5px; }
.fcard-vis { grid-column: span 2; display: grid; grid-template-columns: auto 1fr minmax(220px, 300px); column-gap: 18px; align-items: center; background: linear-gradient(135deg, #fff 45%, #fff3ee); }
.fcard-vis .tile-icon { margin: 0; grid-row: span 2; align-self: start; }
.fcard-vis .mini { grid-row: 1 / span 3; grid-column: 3; padding: 14px 16px; border-radius: 14px; background: #fff; border: 1px solid var(--line); }
.fcard-vis .mini .bar-row:first-child { margin-top: 0; }
.addon { display: inline-block; margin-top: 12px; padding: 3px 10px; border-radius: 999px; font-size: 11.5px; font-weight: 700; letter-spacing: .02em; color: var(--brand-dark); background: rgba(255,92,64,.1); }
.fcard-vis .addon { grid-column: 2; justify-self: start; }

/* Khoảnh khắc sân khấu: dải tối, hai thẻ lớn */
.fgroup-stage { display: block; margin: 24px 0; padding: 80px 0; border: 0; background: radial-gradient(90% 120% at 85% 0%, #4a2217 0%, #1c1414 45%, #111113 100%); color: #fff; }
.stage-head { max-width: 560px; margin-bottom: 36px; }
.stage-head p { color: #c4c4cc; margin: 0; }
.stage-grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.stage-card { border-radius: 24px; overflow: hidden; background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.1); }
.stage-copy { padding: 24px 26px 28px; }
.stage-copy p { margin: 0; color: #c4c4cc; font-size: 15px; }
.stage-copy .addon { margin: 0 0 12px; color: #ffb199; background: rgba(255,133,99,.14); }
.stage-visual { padding: 22px 22px 0; }
.scr { position: relative; aspect-ratio: 16 / 8; border-radius: 16px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; overflow: hidden; border: 1px solid rgba(255,255,255,.12); }
.scr small { font-size: 12px; font-weight: 700; letter-spacing: .28em; text-transform: uppercase; color: #ffb199; }
.scr em { font-style: normal; font-size: 13px; color: #a1a1aa; margin-top: 6px; }
.scr-welcome { background: radial-gradient(70% 90% at 50% 110%, rgba(255,92,64,.55), transparent 70%), linear-gradient(180deg, #1f1a1d, #0e0e10); }
.scr-welcome strong { font-size: clamp(22px, 3vw, 34px); font-weight: 800; letter-spacing: -.02em; margin-top: 6px; background: linear-gradient(180deg, #fff, #ffd9cc); -webkit-background-clip: text; background-clip: text; color: transparent; animation: rise 5s ease-in-out infinite; }
.live { position: absolute; top: 12px; left: 12px; display: inline-flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 700; color: #fff; padding: 3px 9px; border-radius: 999px; background: rgba(255,255,255,.1); }
.live i { width: 6px; height: 6px; border-radius: 50%; background: #ff5c40; box-shadow: 0 0 0 0 rgba(255,92,64,.7); animation: pulse 1.6s infinite; }
.spark { position: absolute; width: 6px; height: 6px; border-radius: 50%; background: #ffb199; opacity: .7; animation: twinkle 3s ease-in-out infinite; }
.s1 { top: 22%; left: 16%; } .s2 { top: 30%; right: 14%; animation-delay: -1s; width: 4px; height: 4px; } .s3 { bottom: 22%; left: 26%; animation-delay: -2s; width: 3px; height: 3px; }
.scr-draw { background: radial-gradient(80% 100% at 50% 0%, rgba(255,133,99,.35), transparent 70%), linear-gradient(180deg, #1c1416, #0e0e10); }
.reels { display: flex; gap: 8px; margin: 12px 0 4px; }
.reels span { width: clamp(30px, 4vw, 44px); height: clamp(42px, 5.4vw, 60px); border-radius: 10px; display: grid; place-items: center; overflow: hidden; background: linear-gradient(180deg, #2a2226, #17131a); border: 1px solid rgba(255,177,153,.25); box-shadow: inset 0 8px 12px rgba(0,0,0,.4), inset 0 -8px 12px rgba(0,0,0,.4); }
.reels b { font-size: clamp(20px, 2.8vw, 30px); font-weight: 800; color: #fff; font-variant-numeric: tabular-nums; animation: spin 2.4s cubic-bezier(.2,.7,.2,1) calc(var(--d) * .12s) infinite; }
@keyframes spin { 0% { transform: translateY(-120%); opacity: 0; } 25%, 85% { transform: none; opacity: 1; } 100% { transform: translateY(120%); opacity: 0; } }
@keyframes rise { 0%, 100% { transform: translateY(2px); } 50% { transform: translateY(-2px); } }
@keyframes pulse { 70% { box-shadow: 0 0 0 8px rgba(255,92,64,0); } 100% { box-shadow: 0 0 0 0 rgba(255,92,64,0); } }
@keyframes twinkle { 0%, 100% { opacity: .2; transform: scale(.8); } 50% { opacity: .9; transform: scale(1.2); } }

/* Journey */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; position: relative; }
.steps::before { content: ''; position: absolute; top: 27px; left: 12%; right: 12%; height: 2px; background: repeating-linear-gradient(90deg, #ffc4b3 0 8px, transparent 8px 16px); }
.steps li { position: relative; text-align: center; padding: 0 8px; }
.num { position: relative; display: grid; place-items: center; width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 18px; font-weight: 800; color: #fff; background: var(--grad); box-shadow: 0 10px 24px -8px rgba(255,92,64,.6); }
.steps h3 { font-size: 18px; margin-bottom: 4px; }
.steps p { margin: 0; font-size: 15px; color: var(--muted); }

/* Legacy */
#legacy { scroll-margin-top: 92px; }
.legacy { display: flex; gap: 32px; align-items: center; justify-content: space-between; padding: 32px 40px; border-radius: 24px; background: #f6f6f7; border: 1px dashed #d4d4d8; }
.legacy h2 { font-size: 22px; font-weight: 700; }
.legacy p { margin: 0; color: var(--muted); max-width: 660px; }
.legacy-ctas { display: flex; flex-direction: column; align-items: center; gap: 10px; flex: none; }

/* FAQ */
.faq { max-width: 860px; }
details { border: 1px solid var(--line); border-radius: 18px; padding: 0 22px; margin-bottom: 12px; background: #fff; transition: border-color .2s, box-shadow .2s; }
details[open] { border-color: #ffd0c2; box-shadow: var(--shadow); }
summary { cursor: pointer; font-weight: 600; font-size: 17px; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px 0; }
summary::-webkit-details-marker { display: none; }
summary::after { content: ''; flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ff5c40' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M12 6v12M6 12h12'/%3E%3C/svg%3E") center / 16px no-repeat; transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { color: var(--muted); margin: 0 0 20px; }

/* Final CTA */
.final { position: relative; overflow: hidden; text-align: center; padding: 64px 32px; margin-bottom: 72px; border-radius: 32px; color: #fff; background: linear-gradient(135deg, #ff5c40 0%, #ff7a52 50%, #ff9a6e 100%); }
.final::before { content: ''; position: absolute; inset: 0; background-image: radial-gradient(rgba(255,255,255,.18) 1px, transparent 1px); background-size: 22px 22px; mask-image: radial-gradient(ellipse at center, #000, transparent 75%); -webkit-mask-image: radial-gradient(ellipse at center, #000, transparent 75%); }
.final > * { position: relative; }
.final h2 { font-size: clamp(26px, 3.6vw, 40px); font-weight: 800; max-width: 720px; margin-inline: auto; }
.final p { margin: 0 auto 28px; opacity: .92; font-size: 17px; }
.final .hero-ctas { justify-content: center; }
.final .btn-light { color: var(--brand-dark); }

/* Footer */
.footer { border-top: 1px solid var(--line); background: #fafafa; font-size: 14px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr 1fr; gap: 32px; padding: 56px 0 36px; }
.foot-grid h3 { font-size: 14px; margin: 0 0 14px; letter-spacing: 0; }
.foot-grid nav, .foot-support { display: flex; flex-direction: column; gap: 10px; }
.foot-grid a { text-decoration: none; color: var(--muted); }
.foot-grid a:hover { color: var(--brand-dark); }
.foot-brand img { height: 26px; width: auto; }
.foot-brand p { margin: 10px 0 18px; color: var(--muted); }
.bct { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 10px; background: #fff; border: 1px solid #bfdbfe; color: #1d4ed8 !important; font-weight: 700; font-size: 12px; text-transform: uppercase; letter-spacing: .02em; }
.bct svg { width: 22px; height: 22px; color: #dc2626; }
.legal-info { border-top: 1px solid var(--line); padding: 22px 0 36px; color: var(--muted); font-size: 13px; }
.legal-info p { margin: 0 0 4px; }
.legal-info strong { color: var(--ink); }
.legal-info .copy { margin-top: 12px; }

/* Reveal on scroll — chỉ khi JS chạy, nội dung luôn hiển thị cho crawler */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }

@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 24px; }
  .hero-copy { text-align: center; }
  .lead { margin-inline: auto; }
  .hero-ctas, .trust { justify-content: center; }
  .hero-visual { height: 440px; max-width: 520px; width: 100%; margin: 0 auto; }
}
@media (max-width: 900px) {
  .nav { display: none; }
  .duo { grid-template-columns: 1fr; }
  .fgroup { grid-template-columns: 1fr; gap: 24px; padding: 40px 0; }
  .fgroup-head { position: static; }
  .stage-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; row-gap: 36px; }
  .steps::before { display: none; }
  .legacy { flex-direction: column; align-items: flex-start; padding: 28px; }
  .legacy-ctas { align-items: flex-start; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .hero { padding: 40px 0 48px; }
  .section { padding: 56px 0; }
  .hero-visual { height: 400px; }
  .ticket { width: 290px; margin-left: -145px; }
  .qr { width: 96px; }
  .f-poll { width: 220px; }
  .card { padding: 30px 22px; border-radius: 24px; }
  .fgrid { grid-template-columns: 1fr; }
  .fcard-vis { grid-column: auto; display: block; }
  .fcard-vis .tile-icon { margin-bottom: 14px; }
  .fcard-vis .mini { margin-top: 16px; }
  .fgroup-stage { padding: 56px 0; }
  .stage-visual { padding: 14px 14px 0; }
  .fnav { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; margin-inline: -16px; padding: 0 16px 4px; scrollbar-width: none; }
  .fnav a { flex: none; }
  .steps { grid-template-columns: 1fr; }
  .bar-end .btn { display: none; }
  .hero-ctas, .card-ctas { flex-direction: column; }
  .hero-ctas .btn, .card-ctas .btn { width: 100%; }
  .final { padding: 48px 22px; }
  .foot-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* Liên hệ nhanh với Tickmi — nút nổi góc phải dưới (giống Web Studio) */
details.qc { position: fixed; right: 20px; bottom: 20px; z-index: 40; margin: 0; padding: 0; border: 0; background: none; box-shadow: none; border-radius: 0; }
details.qc summary { list-style: none; display: grid; place-items: center; justify-content: center; gap: 0; width: 52px; height: 52px; padding: 0; border-radius: 50%; background: var(--grad); color: #fff; cursor: pointer; box-shadow: 0 10px 24px -8px rgba(229,68,42,.6); transition: transform .18s ease; }
details.qc summary::-webkit-details-marker { display: none; }
details.qc summary::after { content: none; }
details.qc summary:hover { transform: translateY(-2px); }
details.qc summary svg { width: 24px; height: 24px; }
.qc .qc-close, .qc[open] .qc-open { display: none; }
.qc[open] .qc-close { display: block; }
.qc-menu { position: absolute; right: 0; bottom: calc(100% + 10px); width: 248px; padding: 8px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 16px 40px -12px rgba(24,24,27,.25); }
.qc-menu p { margin: 0; padding: 4px 8px 6px; font-size: 12px; font-weight: 600; color: var(--muted); }
.qc-menu a { white-space: nowrap; display: flex; align-items: center; gap: 12px; padding: 9px 8px; border-radius: 10px; font-size: 14px; font-weight: 500; color: var(--ink-2); text-decoration: none; }
.qc-menu a:hover { background: #fafafa; }
.qc-menu a > svg { width: 22px; height: 22px; flex: none; }
.qc-ico { display: grid; place-items: center; width: 22px; height: 22px; flex: none; border-radius: 50%; background: var(--soft); color: var(--brand); }
.qc-ico svg { width: 13px; height: 13px; }
@media (max-width: 560px) { details.qc { right: 16px; bottom: 16px; } }
.qc-menu a[hidden] { display: none; }
.nav a[aria-current] { color: var(--brand-dark); background: rgba(255,92,64,.1); }
.fnav a[aria-current] { border-color: var(--brand); background: var(--soft); color: var(--ink); }

/* Menu mobile (≤900px, thay cho .nav bị ẩn) — có link Hệ thống cũ cho nhà tổ chức phase 1 */
details.mnav { display: none; position: relative; margin: 0; padding: 0; border: 0; background: none; box-shadow: none; border-radius: 0; }
details.mnav summary { list-style: none; display: grid; place-items: center; justify-content: center; gap: 0; width: 40px; height: 40px; padding: 0; border-radius: 12px; color: var(--ink); cursor: pointer; }
details.mnav summary::-webkit-details-marker { display: none; }
details.mnav summary::after { content: none; }
details.mnav summary:hover, details.mnav[open] summary { background: #f4f4f5; }
details.mnav summary svg { width: 22px; height: 22px; }
.mnav .mnav-close, .mnav[open] .mnav-open { display: none; }
.mnav[open] .mnav-close { display: block; }
.mnav-menu { position: absolute; right: 0; top: calc(100% + 10px); z-index: 50; width: min(280px, calc(100vw - 32px)); padding: 8px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 16px 40px -12px rgba(24,24,27,.25); display: flex; flex-direction: column; }
.mnav-menu > a:not(.btn) { display: flex; align-items: center; gap: 6px; min-height: 44px; padding: 0 12px; border-radius: 10px; font-size: 15px; font-weight: 500; color: var(--ink-2); text-decoration: none; }
.mnav-menu > a:not(.btn):hover { background: #fafafa; }
.mnav-menu .i { width: 16px; height: 16px; }
.mnav-menu hr { border: 0; border-top: 1px solid var(--line); margin: 6px 4px; }
.mnav-menu .btn, .bar-end .mnav-menu .btn { display: inline-flex; margin-top: 2px; }
@media (max-width: 900px) { details.mnav { display: block; } }