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34px;border-radius:999px;border:none;font-weight:700;font-size:1rem;text-decoration:none;text-align:center;cursor:pointer;transition:transform .2s, box-shadow .2s;box-sizing:border-box;border:2px solid transparent}.page-khuyen-mai__btn:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(0,0,0,.15)}.page-khuyen-mai__btn--primary{background:#EA7C07;color:#fff;border-color:#EA7C07}.page-khuyen-mai__btn--secondary{background:#0477db;color:#fff;border-color:#0477db}.page-khuyen-mai__btn--light{background:#fff;color:#0477db;border-color:#0477db}.page-khuyen-mai__btn--small{padding:8px 20px;font-size:.9rem}.page-khuyen-mai__promo-section{max-width:1200px;margin:10px auto;padding:0 16px}.page-khuyen-mai__promo-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.page-khuyen-mai__promo-card{background:#fff;border-radius:18px;overflow:hidden;border:1px solid #e2f0f7;transition:transform .25s ease,box-shadow .25s 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18px;padding:0;width:100%}.page-khuyen-mai__promo-benefit{position:relative;padding-left:20px;margin-bottom:8px;font-size:.92rem;line-height:1.5}.page-khuyen-mai__promo-benefit:before{content:"✓";position:absolute;left:0;top:0;font-weight:bold;color:#26A9E0}.page-khuyen-mai__guide-section{background:#f4fafd;margin-top:28px;padding:36px 16px 48px}.page-khuyen-mai__guide-inner{max-width:1000px;margin:0 auto}.page-khuyen-mai__guide-title{text-align:center;font-size:clamp(1.5rem,3vw,2.2rem);font-weight:800;color:#0477db;margin:0 0 10px}.page-khuyen-mai__guide-desc{text-align:center;color:#555;max-width:720px;margin:0 auto 36px;line-height:1.7;font-size:1rem}.page-khuyen-mai__guide-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.page-khuyen-mai__guide-step{background:#fff;border-radius:18px;padding:24px 22px;box-shadow:0 4px 16px 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14px;padding-left:20px}.page-khuyen-mai__note-item{color:#444;line-height:1.6;margin-bottom:8px;font-size:.95rem}.page-khuyen-mai__note-prompt{color:#333;font-size:1rem;margin:0 0 16px}.page-khuyen-mai__btn--secondary{margin-top:4px}@media(max-width:900px){.page-khuyen-mai__guide-steps{grid-template-columns:repeat(3,1fr)}}@media(max-width:768px){.page-khuyen-mai__hero-section{padding-top:10px}.page-khuyen-mai__hero-image{aspect-ratio:2/1}.page-khuyen-mai__hero-content{padding:12px 12px 16px}.page-khuyen-mai__hero-title{font-size:1.4rem}.page-khuyen-mai__hero-desc{font-size:.92rem}.page-khuyen-mai__hero-actions{flex-direction:column}.page-khuyen-mai__btn{width:100%;max-width:100%;box-sizing:border-box;padding:11px 16px;font-size:.95rem;white-space:normal;word-wrap:break-word}.page-khuyen-mai__promo-grid{grid-template-columns:1fr;gap:16px}.page-khuyen-mai__promo-card-inner{padding:20px}.page-khuyen-mai__promo-title{font-size:1.25rem}.page-khuyen-mai__promo-desc{font-size:.9rem}.page-khuyen-mai__guide-section{padding:28px 12px 36px}.page-khuyen-mai__guide-title{font-size:1.3rem}.page-khuyen-mai__guide-desc{font-size:.9rem;margin-bottom:24px}.page-khuyen-mai__guide-steps{grid-template-columns:1fr;gap:16px}.page-khuyen-mai__guide-step{padding:20px 18px}.page-khuyen-mai__guide-step-desc{font-size:.9rem}.page-khuyen-mai__note-box{padding:20px 12px 24px}.page-khuyen-mai__note-inner{padding:18px 16px}.page-khuyen-mai__note-title{font-size:1.2rem}.page-khuyen-mai__note-desc{font-size:.92rem}.page-khuyen-mai 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