/* ===== TOKENS ===== */
:root {
    --primary: #4cc0d3;
    --primary-dark: #2a9fb3;
    --primary-deep: #1d7f90;
    --primary-light: #e3f7fa;
    --pink: #ffb5c8;
    --pink-soft: #ffe4ec;
    --yellow: #ffe08a;
    --yellow-soft: #fff6d6;
    --mint: #b8f0d8;
    --mint-soft: #e6fbf2;
    --lilac: #d9cbff;
    --cream: #fffaf3;
    --white: #ffffff;
    --text: #34495e;
    --text-soft: #6b7d8f;
    --danger: #ff6b8a;
    --radius: 28px;
    --radius-sm: 16px;
    --shadow: 0 18px 40px -18px rgba(42, 159, 179, .45);
    --shadow-soft: 0 10px 30px -12px rgba(52, 73, 94, .18);
    --font-head: 'Baloo 2', 'Nunito', sans-serif;
    --font-body: 'Nunito', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: auto; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--cream);
    line-height: 1.6;
    overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
main, .footer { overflow-x: clip; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ===== TYPO ===== */
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.15; color: var(--text); }
.section { position: relative; padding: 110px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 16px; border-radius: 99px;
    background: var(--primary-light); color: var(--primary-dark);
    font-weight: 800; font-size: 14px; letter-spacing: .3px;
    margin-bottom: 16px;
}
.section-title { font-size: clamp(30px, 4.6vw, 50px); font-weight: 800; margin-bottom: 14px; }
.section-title .hl { color: var(--primary); position: relative; white-space: nowrap; }
.section-title .hl::after {
    content: ''; position: absolute; left: -2%; right: -2%; bottom: 4px; height: 14px;
    background: var(--yellow); border-radius: 99px; z-index: -1; opacity: .8;
}
.section-sub { font-size: 18px; color: var(--text-soft); }

/* ===== BUTTONS ===== */
.btn {
    position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    padding: 16px 30px; border-radius: 99px;
    font-family: var(--font-head); font-weight: 700; font-size: 18px;
    transition: transform .25s cubic-bezier(.34,1.56,.64,1), box-shadow .25s;
    will-change: transform; overflow: hidden; isolation: isolate;
}
.btn-primary {
    color: var(--white);
    background: linear-gradient(135deg, #6fd3e2 0%, var(--primary) 45%, var(--primary-dark) 100%);
    box-shadow: 0 10px 0 -2px var(--primary-deep), var(--shadow);
}
.btn-primary::before {
    content: ''; position: absolute; inset: 0; z-index: -1;
    background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.45) 50%, transparent 70%);
    transform: translateX(-120%); animation: shine 3.2s infinite;
}
@keyframes shine { 0%, 60% { transform: translateX(-120%); } 100% { transform: translateX(120%); } }
.btn-primary:hover { transform: translateY(-3px) scale(1.03); }
.btn-primary:active { transform: translateY(4px); box-shadow: 0 4px 0 -2px var(--primary-deep), var(--shadow); }
.btn-ghost { background: var(--white); color: var(--primary-dark); border: 2.5px dashed var(--primary); }
.btn-ghost:hover { transform: translateY(-3px) rotate(-1deg); background: var(--primary-light); }
.btn-pink { color: var(--white); background: linear-gradient(135deg, #ffc4d4, #ff8fab); box-shadow: 0 10px 0 -2px #e56b8b, 0 18px 40px -18px rgba(255,107,138,.6); }
.btn-pink:hover { transform: translateY(-3px) scale(1.03); }
.btn-block { width: 100%; }
.btn .wiggle { display: inline-block; animation: wiggle 1.6s ease-in-out infinite; }
@keyframes wiggle { 0%, 100% { transform: rotate(0); } 20% { transform: rotate(-14deg); } 40% { transform: rotate(12deg); } 60% { transform: rotate(-6deg); } }

/* ===== SCROLL PROGRESS (duck) ===== */
.progress { position: fixed; top: 0; left: 0; right: 0; height: 5px; z-index: 120; background: rgba(76,192,211,.15); }
.progress-bar { height: 100%; width: 100%; transform-origin: left; transform: scaleX(0); background: linear-gradient(90deg, var(--pink), var(--primary), var(--mint)); }
.progress-duck { position: absolute; top: -3px; left: 0; font-size: 22px; transform: translateX(-50%); filter: drop-shadow(0 2px 2px rgba(0,0,0,.15)); }

/* ===== HEADER ===== */
.header {
    position: fixed; top: 5px; left: 0; right: 0; z-index: 100;
    transition: transform .4s, background .3s, box-shadow .3s;
}
.header.scrolled { background: rgba(255,250,243,.88); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: 0 6px 20px -12px rgba(52,73,94,.25); }
.header.hide { transform: translateY(-110%); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-weight: 800; font-size: 22px; color: var(--primary-dark); }
.logo img { height: 40px; width: auto; }
.logo-text small { display: block; font-size: 12px; font-weight: 600; color: var(--text-soft); margin-top: -6px; }
.nav { display: flex; gap: 6px; }
.nav a { padding: 8px 14px; border-radius: 99px; font-weight: 700; font-size: 15px; transition: background .2s, color .2s; }
.nav a:hover { background: var(--primary-light); color: var(--primary-dark); }
.header-cta { padding: 11px 22px; font-size: 16px; }

/* ===== HERO ===== */
.hero {
    position: relative; min-height: 100vh; min-height: 100svh; padding: 140px 0 140px;
    background:
        radial-gradient(circle at 12% 20%, var(--pink-soft) 0, transparent 34%),
        radial-gradient(circle at 88% 18%, var(--mint-soft) 0, transparent 30%),
        radial-gradient(circle at 70% 85%, var(--yellow-soft) 0, transparent 32%),
        linear-gradient(180deg, #f2fcfd 0%, var(--cream) 100%);
    overflow: hidden;
}
.hero-bubbles { position: absolute; inset: 0; z-index: 3; pointer-events: none; }
.bubble {
    position: absolute; border-radius: 50%; pointer-events: auto; cursor: pointer;
    background:
        radial-gradient(circle at 30% 26%, #fff 0 8%, rgba(255,255,255,.55) 10% 20%, transparent 34%),
        radial-gradient(circle at 70% 78%, rgba(255,255,255,.7) 0 5%, transparent 12%),
        conic-gradient(from 200deg, rgba(124,214,228,.55), rgba(255,170,200,.55), rgba(255,230,140,.5), rgba(184,240,216,.55), rgba(124,214,228,.55));
    border: 2px solid rgba(76,192,211,.55);
    box-shadow: inset 0 0 18px rgba(255,255,255,.75), 0 6px 18px -6px rgba(42,159,179,.45);
    opacity: .9;
    -webkit-tap-highlight-color: transparent;
}
.pop-particle { position: absolute; width: 8px; height: 8px; border-radius: 50%; pointer-events: none; z-index: 5; }
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.08fr .92fr; gap: 40px; align-items: center; pointer-events: none; }
.hero-grid > * { pointer-events: auto; }
.pill {
    display: inline-flex; align-items: center; gap: 8px; padding: 8px 18px; border-radius: 99px;
    background: var(--white); box-shadow: var(--shadow-soft); font-weight: 800; color: var(--primary-dark); font-size: 15px;
}
.pill .dot { width: 9px; height: 9px; border-radius: 50%; background: #4cd38a; box-shadow: 0 0 0 0 rgba(76,211,138,.6); animation: pulse 1.8s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(76,211,138,0); } 100% { box-shadow: 0 0 0 0 rgba(76,211,138,0); } }
.hero-title { font-size: clamp(36px, 5vw, 64px); font-weight: 800; margin: 22px 0 18px; letter-spacing: -.5px; }
.hero-title .line { display: block; overflow: hidden; padding-bottom: 4px; }
.hero-title .line > span { display: inline-block; }
.hero-title .hl { color: var(--primary); }
.hero-title .hl-pink { color: #ff8fab; }
.hero-desc { font-size: 19px; color: var(--text-soft); max-width: 540px; margin-bottom: 24px; }
.hero-checks { list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 18px; margin-bottom: 32px; max-width: 540px; }
.hero-checks li { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.hero-checks li span { flex: none; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--mint); font-size: 14px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 26px; }
.pop-hint { display: inline-flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 10px; font-weight: 700; color: var(--text-soft); font-size: 15px; background: rgba(255,255,255,.7); padding: 8px 16px; border-radius: 99px; }
.pop-hint b { color: var(--primary-dark); font-size: 18px; min-width: 18px; display: inline-block; text-align: center; }

.hero-visual { position: relative; display: grid; place-items: center; min-height: 520px; }
.hero-blob {
    position: absolute; width: 440px; height: 440px; max-width: 92%;
    background: linear-gradient(135deg, var(--primary-light), var(--mint-soft) 60%, var(--pink-soft));
    border-radius: 42% 58% 63% 37% / 41% 44% 56% 59%;
    animation: blob 12s ease-in-out infinite;
}
@keyframes blob {
    0%, 100% { border-radius: 42% 58% 63% 37% / 41% 44% 56% 59%; }
    33% { border-radius: 63% 37% 38% 62% / 55% 38% 62% 45%; }
    66% { border-radius: 38% 62% 52% 48% / 36% 61% 39% 64%; }
}
.hero-bottle { position: relative; width: 250px; z-index: 2; filter: drop-shadow(0 30px 30px rgba(42,159,179,.35)); cursor: grab; }
.hero-bottle:active { cursor: grabbing; }
.hero-badge {
    position: absolute; z-index: 3; display: flex; align-items: center; gap: 10px;
    background: var(--white); padding: 12px 16px; border-radius: 20px; box-shadow: var(--shadow-soft);
    font-weight: 800; font-size: 14px; line-height: 1.25;
}
.hero-badge .ico { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; font-size: 20px; flex: none; }
.hero-badge small { display: block; font-weight: 600; color: var(--text-soft); font-size: 12px; }
.hb-1 { top: 10%; left: 0; } .hb-1 .ico { background: var(--pink-soft); }
.hb-2 { top: 42%; right: -4%; } .hb-2 .ico { background: var(--yellow-soft); }
.hb-3 { bottom: 8%; left: 6%; } .hb-3 .ico { background: var(--mint-soft); }
.hero-duck { position: absolute; bottom: 12%; right: 10%; font-size: 54px; z-index: 3; cursor: pointer; user-select: none; }
.hero-star { position: absolute; font-size: 26px; z-index: 1; }
.wave { position: absolute; left: 0; right: 0; bottom: -1px; z-index: 3; line-height: 0; }
.wave svg { width: 100%; height: 90px; }

/* ===== MARQUEE ===== */
.marquee { position: relative; z-index: 4; background: var(--primary); color: var(--white); padding: 18px 0; transform: rotate(-1.5deg); margin: -30px -20px 0; box-shadow: var(--shadow); overflow: hidden; }
.marquee-track { display: flex; width: max-content; gap: 48px; font-family: var(--font-head); font-size: 22px; font-weight: 700; white-space: nowrap; }
.marquee-track span { display: inline-flex; align-items: center; gap: 48px; }
.marquee-track span::after { content: ''; width: 22px; height: 22px; border-radius: 50%; flex: none; background: radial-gradient(circle at 32% 30%, #fff 0 14%, rgba(255,255,255,.35) 16% 45%, rgba(255,255,255,.12) 70%); border: 2px solid rgba(255,255,255,.9); }
/* CSS bubble icon (thay emoji 🫧 vì Windows chưa hiển thị được) */
.bb { display: inline-block; width: 1em; height: 1em; border-radius: 50%; vertical-align: -.12em; flex: none; font-style: normal;
    background: radial-gradient(circle at 32% 30%, #fff 0 13%, rgba(255,255,255,.4) 15% 32%, rgba(124,214,228,.55) 62%, rgba(255,160,190,.6) 100%);
    border: .07em solid #4cc0d3; box-shadow: inset -.08em -.1em .15em rgba(42,159,179,.35); }

/* ===== PAIN (flip cards) ===== */
.pain { background: var(--cream); }
.flip-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.flip-card { perspective: 1200px; height: 300px; cursor: pointer; -webkit-tap-highlight-color: transparent; }
.flip-inner { position: relative; width: 100%; height: 100%; transition: transform .8s cubic-bezier(.34,1.4,.64,1); transform-style: preserve-3d; }
.flip-card.flipped .flip-inner { transform: rotateY(180deg); }
.flip-face {
    position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden;
    border-radius: var(--radius); padding: 30px 26px; display: flex; flex-direction: column; justify-content: center; text-align: center;
    box-shadow: var(--shadow-soft);
}
.flip-front { background: var(--white); border: 3px solid var(--pink-soft); }
.flip-front .emo { font-size: 58px; margin-bottom: 14px; display: inline-block; }
.flip-front h3 { font-size: 23px; margin-bottom: 8px; }
.flip-front p { color: var(--text-soft); }
.flip-front .tap { margin-top: 16px; font-size: 13px; font-weight: 800; color: #ff8fab; letter-spacing: .5px; text-transform: uppercase; }
.flip-back { transform: rotateY(180deg); background: linear-gradient(150deg, var(--primary), var(--primary-dark)); color: var(--white); }
.flip-back h3 { color: var(--white); font-size: 22px; margin-bottom: 10px; }
.flip-back .emo { font-size: 42px; margin-bottom: 8px; }
.pain-foot { text-align: center; margin-top: 44px; font-size: 18px; font-weight: 700; }
.pain-foot b { color: var(--primary-dark); }

/* ===== COMPARE SLIDER ===== */
.compare-sec { background: linear-gradient(180deg, var(--cream), var(--primary-light)); }
.compare {
    position: relative; max-width: 940px; margin: 0 auto; height: 440px; border-radius: 36px; overflow: hidden;
    box-shadow: var(--shadow); user-select: none; -webkit-user-select: none; touch-action: pan-y; background: #fff;
}
.cmp-layer { position: absolute; inset: 0; display: flex; padding: 40px; }
.cmp-normal { background: linear-gradient(135deg, #eef1f4, #dfe5ea); justify-content: flex-start; }
.cmp-bonbon { background: linear-gradient(135deg, #dff7fb, #c4eef5 60%, #fde3eb); justify-content: flex-end; clip-path: inset(0 0 0 50%); }
.cmp-col { width: 46%; display: flex; flex-direction: column; justify-content: center; }
.cmp-col h3 { font-size: 26px; margin-bottom: 18px; }
.cmp-normal h3 { color: #7a8794; }
.cmp-bonbon h3 { color: var(--primary-deep); }
.cmp-col ul { list-style: none; display: grid; gap: 12px; }
.cmp-col li { display: flex; gap: 10px; align-items: flex-start; font-weight: 700; padding: 10px 14px; border-radius: 14px; background: rgba(255,255,255,.65); }
.cmp-normal li { color: #6f7b86; }
.cmp-col li i { font-style: normal; flex: none; }
.cmp-deco { position: absolute; font-size: 90px; opacity: .14; bottom: 10px; }
.cmp-normal .cmp-deco { right: 54%; }
.cmp-bonbon .cmp-deco { left: 54%; opacity: .25; }
.cmp-handle { position: absolute; top: 0; bottom: 0; left: 0; width: 0; z-index: 5; }
.cmp-handle::before { content: ''; position: absolute; top: 0; bottom: 0; left: -2px; width: 4px; background: var(--white); box-shadow: 0 0 12px rgba(0,0,0,.15); }
.cmp-knob {
    position: absolute; top: 50%; left: 0; width: 66px; height: 66px; transform: translate(-50%, -50%);
    border-radius: 50%; background: var(--white); box-shadow: 0 8px 24px rgba(42,159,179,.45);
    display: grid; place-items: center; font-size: 22px; cursor: ew-resize; border: 4px solid var(--primary); touch-action: none;
}
.cmp-tag { position: absolute; top: 20px; z-index: 4; padding: 6px 14px; border-radius: 99px; font-weight: 800; font-size: 13px; background: rgba(255,255,255,.85); }
.cmp-tag.l { left: 20px; color: #7a8794; } .cmp-tag.r { right: 20px; color: var(--primary-dark); }
.compare-hint { text-align: center; margin-top: 18px; font-weight: 700; color: var(--text-soft); }
.compare-note { text-align: center; margin-top: 6px; font-size: 13px; color: var(--text-soft); opacity: .8; }

/* ===== INGREDIENTS GAME ===== */
.ingre { background: var(--primary-light); overflow: hidden; }
.lab { display: grid; grid-template-columns: 1fr 340px 1fr; gap: 30px; align-items: center; max-width: 1060px; margin: 0 auto; }
.chips { display: grid; gap: 18px; }
.chip {
    position: relative; z-index: 6; display: flex; align-items: center; gap: 12px; padding: 14px 18px; border-radius: 22px;
    background: var(--white); box-shadow: var(--shadow-soft); font-weight: 800; cursor: grab; touch-action: none;
    border: 2.5px solid transparent; transition: border-color .2s, opacity .3s;
}
.chip:hover { border-color: var(--primary); }
.chip .ico { width: 46px; height: 46px; border-radius: 15px; display: grid; place-items: center; font-size: 24px; flex: none; }
.chip small { display: block; font-weight: 600; color: var(--text-soft); font-size: 13px; }
.chip.used { opacity: .35; pointer-events: none; filter: grayscale(.6); }
.drop-zone { position: relative; display: grid; place-items: center; padding: 20px 0; }
.drop-ring { position: absolute; width: 300px; height: 300px; max-width: 100%; border-radius: 50%; border: 3px dashed var(--primary); opacity: .45; animation: spin 24s linear infinite; }
.drop-zone.over .drop-ring { opacity: 1; border-color: #ff8fab; }
@keyframes spin { to { transform: rotate(360deg); } }
.lab-bottle { width: 190px; position: relative; z-index: 2; }
.lab-meter { margin-top: 18px; text-align: center; font-weight: 800; }
.lab-meter .bar { width: 220px; height: 14px; border-radius: 99px; background: var(--white); margin: 8px auto 0; overflow: hidden; box-shadow: inset 0 2px 4px rgba(0,0,0,.06); }
.lab-meter .bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--pink), var(--primary)); border-radius: 99px; }
.lab-info {
    max-width: 640px; margin: 36px auto 0; min-height: 96px; padding: 20px 26px; border-radius: 24px; background: var(--white);
    box-shadow: var(--shadow-soft); display: flex; gap: 16px; align-items: center;
}
.lab-info .ico { font-size: 36px; flex: none; }
.lab-info h4 { font-size: 20px; color: var(--primary-dark); }
.lab-info p { color: var(--text-soft); }
.lab-done { display: none; text-align: center; margin-top: 26px; }
.lab-done.show { display: block; }
.lab-note { text-align: center; margin-top: 14px; font-size: 13px; color: var(--text-soft); }

/* ===== HORIZONTAL BENEFITS ===== */
.benefits { background: var(--cream); padding: 110px 0 60px; overflow: hidden; }
.h-track { display: flex; gap: 28px; padding: 0 max(20px, calc((100vw - 1180px) / 2 + 20px)); width: max-content; }
.b-card {
    position: relative; flex: none; width: min(420px, 82vw); min-height: 420px; padding: 36px 32px; border-radius: 36px;
    display: flex; flex-direction: column; justify-content: flex-end; overflow: hidden; box-shadow: var(--shadow-soft);
}
.b-card .num { position: absolute; top: 18px; right: 28px; font-family: var(--font-head); font-size: 120px; font-weight: 800; line-height: 1; opacity: .18; }
.b-card .big { position: absolute; top: 40px; left: 32px; font-size: 96px; }
.b-card h3 { font-size: 28px; margin-bottom: 10px; }
.b-card p { font-size: 17px; }
.b-card:nth-child(1) { background: var(--pink-soft); }
.b-card:nth-child(2) { background: var(--mint-soft); }
.b-card:nth-child(3) { background: var(--yellow-soft); }
.b-card:nth-child(4) { background: #ece6ff; }
.b-card:nth-child(5) { background: var(--primary-light); }
.b-card.cta-card { background: linear-gradient(150deg, var(--primary), var(--primary-dark)); color: var(--white); justify-content: center; text-align: center; align-items: center; }
.b-card.cta-card h3 { color: var(--white); }
.b-card.cta-card .btn { margin-top: 20px; }

/* ===== QUIZ ===== */
.quiz-sec { background: linear-gradient(180deg, var(--cream), var(--pink-soft)); }
.quiz {
    position: relative; max-width: 760px; margin: 0 auto; background: var(--white); border-radius: 36px; padding: 44px;
    box-shadow: var(--shadow); overflow: hidden; min-height: 460px;
}
.quiz-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 26px; font-weight: 800; color: var(--text-soft); }
.quiz-bar { flex: 1; height: 12px; border-radius: 99px; background: var(--primary-light); overflow: hidden; }
.quiz-bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), #ff8fab); border-radius: 99px; transition: width .5s cubic-bezier(.34,1.56,.64,1); }
.q-step { display: none; }
.q-step.active { display: block; }
.q-step h3 { font-size: clamp(24px, 3.4vw, 32px); margin-bottom: 22px; text-align: center; }
.q-opts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.q-opt {
    display: flex; align-items: center; gap: 14px; padding: 18px 20px; border-radius: 22px; text-align: left;
    background: var(--cream); border: 2.5px solid #f0ebe3; font-weight: 800; font-size: 17px;
    transition: transform .25s cubic-bezier(.34,1.56,.64,1), border-color .2s, background .2s;
}
.q-opt .e { font-size: 30px; flex: none; }
.q-opt:hover { transform: translateY(-3px); border-color: var(--primary); background: var(--primary-light); }
.q-opt.picked { border-color: var(--primary); background: var(--primary-light); }
.q-back { margin-top: 20px; font-weight: 700; color: var(--text-soft); }
.q-back:hover { color: var(--primary-dark); }
.q-result { display: none; text-align: center; }
.q-result.active { display: block; }
.q-result .badge { font-size: 74px; display: inline-block; }
.q-result h3 { font-size: 30px; margin: 8px 0 10px; }
.q-result .type { display: inline-block; padding: 6px 16px; border-radius: 99px; background: var(--yellow-soft); color: #b0821a; font-weight: 800; margin-bottom: 14px; }
.q-tips { text-align: left; display: grid; gap: 10px; margin: 18px 0 26px; }
.q-tips li { list-style: none; display: flex; gap: 10px; padding: 12px 16px; border-radius: 16px; background: var(--mint-soft); font-weight: 600; }
.q-loading { display: none; text-align: center; padding: 60px 0; }
.q-loading.active { display: block; }
.q-loading .spin { font-size: 60px; display: inline-block; }

/* ===== HOW TO ===== */
.howto { background: var(--cream); }
.steps { position: relative; max-width: 980px; margin: 0 auto; }
.steps-path { position: absolute; top: 60px; left: 8%; right: 8%; height: 80px; z-index: 0; }
.steps-grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.step { text-align: center; }
.step .circle {
    width: 120px; height: 120px; margin: 0 auto 18px; border-radius: 50%; background: var(--white); box-shadow: var(--shadow-soft);
    display: grid; place-items: center; font-size: 50px; position: relative; border: 4px solid var(--primary-light);
}
.step .circle b { position: absolute; top: -4px; right: -4px; width: 36px; height: 36px; border-radius: 50%; background: var(--primary); color: #fff; font-family: var(--font-head); display: grid; place-items: center; font-size: 18px; }
.step h4 { font-size: 21px; margin-bottom: 6px; }
.step p { color: var(--text-soft); font-size: 16px; }

/* ===== WHEEL ===== */
.wheel-sec { background: linear-gradient(160deg, var(--primary) 0%, var(--primary-dark) 100%); color: var(--white); overflow: hidden; }
.wheel-sec .section-title, .wheel-sec h3 { color: var(--white); }
.wheel-sec .section-sub { color: rgba(255,255,255,.88); }
.wheel-sec .eyebrow { background: rgba(255,255,255,.2); color: var(--white); }
.wheel-sec .section-title .hl { color: var(--yellow); }
.wheel-sec .section-title .hl::after { background: rgba(255,255,255,.22); }
.wheel-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.wheel-wrap { position: relative; width: min(440px, 100%); aspect-ratio: 1; margin: 0 auto; }
.wheel-wrap::before { content: ''; position: absolute; inset: -14px; border-radius: 50%; background: repeating-conic-gradient(var(--yellow) 0 10deg, var(--white) 10deg 20deg); opacity: .9; }
.wheel { position: relative; width: 100%; height: 100%; border-radius: 50%; overflow: hidden; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.wheel svg { width: 100%; height: 100%; }
.wheel-pointer { position: absolute; top: -26px; left: 50%; transform: translateX(-50%); z-index: 3; font-size: 48px; filter: drop-shadow(0 6px 6px rgba(0,0,0,.25)); }
.wheel-center {
    position: absolute; inset: 37%; z-index: 2; border-radius: 50%; background: var(--white); color: var(--primary-dark);
    display: grid; place-items: center; text-align: center; font-family: var(--font-head); font-weight: 800; font-size: 20px; line-height: 1.05;
    box-shadow: 0 6px 20px rgba(0,0,0,.2), inset 0 -6px 0 var(--primary-light); border: 5px solid var(--yellow);
}
.wheel-center:disabled { cursor: not-allowed; }
.wheel-center:not(:disabled):hover { transform: scale(1.05); }
.wheel-copy ul { list-style: none; display: grid; gap: 12px; margin: 22px 0 30px; }
.wheel-copy li { display: flex; gap: 12px; align-items: center; font-weight: 700; font-size: 17px; }
.wheel-copy li span { width: 34px; height: 34px; border-radius: 12px; background: rgba(255,255,255,.2); display: grid; place-items: center; flex: none; }
.wheel-result { display: none; padding: 22px; border-radius: 24px; background: var(--white); color: var(--text); margin-bottom: 22px; }
.wheel-result.show { display: block; }
.wheel-result b { color: #ff6b8a; font-size: 22px; font-family: var(--font-head); }

/* ===== FACT ===== */
.fact { display: flex; align-items: center; gap: 22px; max-width: 760px; margin: 0 auto 50px; padding: 22px 28px; border-radius: 28px; background: var(--white); box-shadow: var(--shadow-soft); border: 3px dashed var(--pink); }
.fact .num { font-family: var(--font-head); font-weight: 800; font-size: 64px; line-height: 1; color: #ff8fab; flex: none; }
.fact p { font-size: 17px; font-weight: 600; }
.fact b { color: var(--primary-dark); }
.chip.bad .ico { background: #ffe1e1 !important; }
.chip.bad { border-style: dashed; border-color: #ffc9c9; }
.chip.rejected { opacity: .5; text-decoration: line-through; pointer-events: none; }

/* ===== PRODUCT INFO ===== */
.pinfo { background: var(--cream); }
.pinfo-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 50px; align-items: center; max-width: 1040px; margin: 0 auto; }
.pinfo-visual { position: relative; display: grid; place-items: center; min-height: 380px; }
.pinfo-visual .hero-blob { width: 340px; height: 340px; }
.pinfo-bottle { width: 200px; position: relative; z-index: 2; }
.vol-tag { position: absolute; z-index: 3; top: 14%; right: 12%; width: 96px; height: 96px; border-radius: 50%; background: var(--yellow); display: grid; place-items: center; align-content: center; text-align: center; font-family: var(--font-head); font-weight: 800; font-size: 30px; line-height: 1; color: #8a6300; box-shadow: var(--shadow-soft); }
.vol-tag small { display: block; font-size: 14px; font-family: var(--font-body); }
.tabs { display: flex; gap: 8px; padding: 6px; border-radius: 99px; background: var(--white); box-shadow: var(--shadow-soft); margin-bottom: 22px; width: max-content; max-width: 100%; position: relative; }
.tab { position: relative; z-index: 1; padding: 10px 20px; border-radius: 99px; font-weight: 800; color: var(--text-soft); transition: color .3s; }
.tab.active { color: var(--white); }
.tab-pill { position: absolute; top: 6px; bottom: 6px; left: 0; border-radius: 99px; background: var(--primary); z-index: 0; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.spec { list-style: none; display: grid; gap: 12px; }
.spec li { display: flex; align-items: center; gap: 14px; padding: 14px 18px; border-radius: 18px; background: var(--white); box-shadow: var(--shadow-soft); font-weight: 600; }
.spec li .e { width: 42px; height: 42px; border-radius: 14px; display: grid; place-items: center; background: var(--primary-light); font-size: 20px; flex: none; }
.spec li span:not(.e) { color: var(--text-soft); min-width: 110px; }
.spec li b { color: var(--text); }

/* ===== FAQ STYLES ===== */
.faq { background: linear-gradient(180deg, var(--cream), var(--primary-light)); }
.faq-list { max-width: 820px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: var(--white); border-radius: 22px; box-shadow: var(--shadow-soft); overflow: hidden; }
.faq-q { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 22px 26px; text-align: left; font-weight: 800; font-size: 18px; }
.faq-q .pm { width: 34px; height: 34px; border-radius: 50%; background: var(--primary-light); color: var(--primary-dark); display: grid; place-items: center; font-size: 22px; flex: none; transition: transform .35s, background .3s; }
.faq-item.open .faq-q .pm { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-a { height: 0; overflow: hidden; }
.faq-a p { padding: 0 26px 22px; color: var(--text-soft); }

/* ===== FORM ===== */
.form-sec { background: var(--primary-light); padding-bottom: 140px; }
.form-wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 44px; align-items: start; }
.form-side h2 { font-size: clamp(32px, 4.4vw, 48px); margin: 6px 0 14px; }
.form-side h2 .hl { color: var(--primary); }
.gift-list { list-style: none; display: grid; gap: 14px; margin: 24px 0; }
.gift-list li { display: flex; gap: 14px; align-items: center; background: var(--white); padding: 14px 18px; border-radius: 20px; box-shadow: var(--shadow-soft); font-weight: 700; }
.gift-list li .e { font-size: 30px; flex: none; }
.gift-list li small { display: block; color: var(--text-soft); font-weight: 600; }
.countdown { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 8px; }
.countdown .lbl { font-weight: 800; width: 100%; margin-bottom: 4px; }
.cd-box { min-width: 70px; text-align: center; padding: 10px 8px; border-radius: 16px; background: var(--white); box-shadow: var(--shadow-soft); }
.cd-box b { display: block; font-family: var(--font-head); font-size: 30px; color: #ff6b8a; line-height: 1; }
.cd-box small { font-size: 12px; font-weight: 700; color: var(--text-soft); }

.form-card { position: relative; background: var(--white); border-radius: 36px; padding: 40px; box-shadow: var(--shadow); }
.form-card::before { content: '🎀'; position: absolute; top: -28px; left: 50%; transform: translateX(-50%); font-size: 50px; }
.form-card h3 { text-align: center; font-size: 28px; margin-bottom: 4px; }
.form-card .sub { text-align: center; color: var(--text-soft); margin-bottom: 26px; }
.won-banner { display: none; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 16px; background: var(--yellow-soft); border: 2px dashed #f2c24b; font-weight: 700; margin-bottom: 20px; }
.won-banner.show { display: flex; }
.field { margin-bottom: 18px; }
.field > label, .field > .lbl { display: block; font-weight: 800; margin-bottom: 8px; }
.field > label em, .field > .lbl em { color: var(--danger); font-style: normal; }
.input {
    width: 100%; padding: 15px 20px; border-radius: 18px; border: 2.5px solid #eee6da; background: var(--cream);
    font: inherit; font-size: 17px; color: var(--text); transition: border-color .2s, box-shadow .2s, background .2s; outline: none;
}
.input:focus { border-color: var(--primary); background: var(--white); box-shadow: 0 0 0 5px rgba(76,192,211,.18); }
.input.error { border-color: var(--danger); animation: shake .4s; }
@keyframes shake { 25% { transform: translateX(-6px); } 50% { transform: translateX(6px); } 75% { transform: translateX(-3px); } }
textarea.input { resize: vertical; min-height: 90px; }
.err { display: none; color: var(--danger); font-size: 14px; font-weight: 700; margin-top: 6px; }
.err.show { display: block; }
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; }
.chip-opt { position: relative; }
.chip-opt input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.chip-opt span {
    display: inline-flex; align-items: center; gap: 6px; padding: 10px 16px; border-radius: 99px; background: var(--cream);
    border: 2.5px solid #eee6da; font-weight: 700; font-size: 15px; transition: all .2s;
}
.chip-opt input:checked + span { background: var(--primary); border-color: var(--primary); color: var(--white); transform: scale(1.04); }
.chip-opt input:focus-visible + span { box-shadow: 0 0 0 4px rgba(76,192,211,.3); }
.consent { font-size: 13px; color: var(--text-soft); text-align: center; margin-top: 14px; }
.form-success { display: none; text-align: center; padding: 20px 0; }
.form-success.show { display: block; }
.form-success .big { font-size: 80px; display: inline-block; }
.form-success h3 { font-size: 30px; margin: 10px 0; }
.form-success p { color: var(--text-soft); margin-bottom: 22px; }
.btn[disabled] { opacity: .7; pointer-events: none; }

/* ===== FOOTER ===== */
.footer { background: #2b3e4f; color: rgba(255,255,255,.8); padding: 60px 0 120px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; }
.footer h4 { color: var(--white); font-size: 20px; margin-bottom: 14px; }
.footer p, .footer a { font-size: 15px; }
.footer a:hover { color: var(--primary); }
.footer-bottom { margin-top: 36px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); font-size: 13px; text-align: center; }

/* ===== FLOATING ===== */
.float-btns { position: fixed; right: 18px; bottom: 26px; z-index: 90; display: grid; gap: 12px; }
.float-btn { width: 58px; height: 58px; border-radius: 50%; display: grid; place-items: center; font-size: 26px; color: #fff; box-shadow: var(--shadow); transition: transform .25s; }
.float-btn:hover { transform: scale(1.12) rotate(-8deg); }
.float-btn.phone { background: #ff8fab; animation: ring 2.4s infinite; }
.float-btn.zalo { background: #0068ff; font-family: var(--font-head); font-weight: 800; font-size: 15px; }
@keyframes ring { 0%, 70%, 100% { transform: rotate(0); } 75% { transform: rotate(-14deg); } 80% { transform: rotate(14deg); } 85% { transform: rotate(-10deg); } 90% { transform: rotate(8deg); } }
.sticky-bar {
    display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 95; padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
    background: rgba(255,255,255,.95); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); box-shadow: 0 -8px 24px -10px rgba(52,73,94,.25);
    gap: 10px; transform: translateY(110%); transition: transform .4s cubic-bezier(.34,1.56,.64,1);
}
.sticky-bar.show { transform: translateY(0); }
.sticky-bar .btn { padding: 14px 18px; font-size: 16px; }
.sticky-bar .call { flex: none; width: 54px; padding: 0; background: #ff8fab; color: #fff; }
.sticky-bar .go { flex: 1; }

.toast {
    position: fixed; left: 50%; top: 90px; z-index: 130; opacity: 0; pointer-events: none;
    background: var(--white); padding: 14px 22px; border-radius: 99px; box-shadow: var(--shadow); font-weight: 800; display: flex; gap: 10px; align-items: center;
    max-width: calc(100vw - 32px);
}
.toast a { color: var(--primary-dark); text-decoration: underline; pointer-events: auto; white-space: nowrap; }

.cursor-bubble { position: fixed; z-index: 140; pointer-events: none; border-radius: 50%; border: 1.5px solid rgba(76,192,211,.6); background: radial-gradient(circle at 30% 30%, #fff, rgba(76,192,211,.15)); }

.confetti { position: fixed; top: -20px; z-index: 150; pointer-events: none; }

/* reveal defaults (set by JS so no-JS still shows content) */
.js [data-reveal] { opacity: 0; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .nav { display: none; }
    .hero-grid, .wheel-grid, .form-wrap { grid-template-columns: 1fr; }
    .hero { padding-top: 120px; }
    .hero-copy { text-align: center; }
    .hero-desc, .hero-checks { margin-left: auto; margin-right: auto; }
    .hero-ctas { justify-content: center; }
    .hero-visual { min-height: 440px; }
    .lab { grid-template-columns: 1fr 1fr; }
    .drop-zone { grid-column: 1 / -1; grid-row: 1; }
    .wheel-copy { text-align: center; }
    .wheel-copy li { justify-content: center; }
}
@media (max-width: 768px) {
    .section { padding: 80px 0; }
    .container { padding: 0 16px; }
    .header-cta { display: none; }
    .header-inner { height: 62px; }
    .hero { padding: 100px 0 120px; }
    .hero-desc { font-size: 17px; }
    .hero-checks { grid-template-columns: 1fr 1fr; gap: 8px 10px; text-align: left; font-size: 14px; }
    .hero-ctas .btn { width: 100%; }
    .hero-visual { min-height: 380px; }
    .hero-bottle { width: 190px; }
    .hero-blob { width: 320px; height: 320px; }
    .hero-badge { padding: 9px 12px; font-size: 12px; }
    .hero-badge .ico { width: 30px; height: 30px; font-size: 16px; }
    .hb-2 { right: 0; }
    .hero-duck { font-size: 42px; right: 4%; }
    .marquee-track { font-size: 18px; }
    .flip-grid { grid-template-columns: 1fr; }
    .flip-card { height: 250px; }
    .compare { height: 520px; border-radius: 28px; }
    .cmp-layer { padding: 60px 16px 24px; align-items: flex-start; }
    .cmp-col { width: 47%; }
    .cmp-col h3 { font-size: 19px; }
    .cmp-col li { font-size: 13px; padding: 8px 10px; flex-direction: column; gap: 2px; }
    .cmp-knob { width: 54px; height: 54px; }
    .lab { grid-template-columns: 1fr; gap: 16px; }
    .chips { grid-template-columns: 1fr 1fr; gap: 12px; }
    .chip { padding: 10px 12px; font-size: 14px; gap: 8px; }
    .chip .ico { width: 36px; height: 36px; font-size: 18px; }
    .chip small { font-size: 11px; }
    .drop-ring { width: 240px; height: 240px; }
    .lab-bottle { width: 150px; }
    .lab-info { flex-direction: column; text-align: center; padding: 18px; }
    .h-track { overflow-x: auto; width: auto; scroll-snap-type: x mandatory; padding-bottom: 20px; -webkit-overflow-scrolling: touch; }
    .b-card { scroll-snap-align: center; min-height: 360px; }
    .quiz { padding: 28px 18px; border-radius: 28px; }
    .q-opts { grid-template-columns: 1fr; }
    .q-opt { padding: 14px 16px; font-size: 16px; }
    .steps-path { display: none; }
    .steps-grid { grid-template-columns: 1fr; gap: 30px; }
    .pinfo-grid { grid-template-columns: 1fr; gap: 20px; }
    .pinfo-visual { min-height: 300px; }
    .pinfo-bottle { width: 160px; }
    .pinfo-visual .hero-blob { width: 260px; height: 260px; }
    .tabs { width: 100%; }
    .tab { flex: 1; padding: 10px 8px; font-size: 14px; }
    .spec li span:not(.e) { min-width: 84px; font-size: 14px; }
    .fact { flex-direction: column; text-align: center; gap: 8px; padding: 20px 18px; }
    .step .circle { width: 96px; height: 96px; font-size: 40px; }
    .form-card { padding: 34px 18px 26px; border-radius: 28px; }
    .footer-grid { grid-template-columns: 1fr; }
    .float-btns { display: none; }
    .sticky-bar { display: flex; }
    .cd-box { min-width: 62px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}