:root{--color-bg:#08160F;--color-card:#11271B;--color-text:#F2FFF6;--color-text-sec:#A7D9B8;--color-border:#2E7A4E;--color-glow:#57E38D;--color-gold:#F2C14E;--color-divider:#1E3A2A;--color-deep:#0A4B2C;--color-main:#11A84E;--color-sub:#22C768;--btn-gradient:linear-gradient(180deg,#2AD16F 0%,#13994A 100%)}.page-support{background:var(--color-bg);color:var(--color-text);font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;overflow-x:hidden}.page-support a{color:var(--color-glow)}.page-support a:hover{color:var(--color-sub)}.page-support__hero{background:var(--color-bg);padding-top:10px}.page-support__hero-wrap{display:flex;flex-direction:column;gap:14px;max-width:1200px;margin:0 auto;padding:0 16px}.page-support__hero-image{width:100%;height:auto;aspect-ratio:1020/300;object-fit:cover;display:block;border-radius:16px;box-shadow:0 12px 32px rgba(0,0,0,.45)}.page-support__hero-content{padding:12px 8px 20px;text-align:center}.page-support__hero-title{color:var(--color-glow);font-weight:800;line-height:1.25;letter-spacing:.02em;max-width:860px;margin:0 auto 10px;font-size:clamp(1.3rem,2.4vw,2rem)}.page-support__hero-subtitle{color:var(--color-text-sec);max-width:680px;margin:0 auto 22px;font-size:1.02rem;line-height:1.75;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}.page-support__hero-buttons{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}.page-support__btn{display:inline-block;padding:12px 30px;border-radius:999px;font-weight:600;font-size:1rem;line-height:1.4;text-decoration:none;transition:all .25s cubic-bezier(.215,.61,.355,1);max-width:100%;box-sizing:border-box;white-space:normal;word-wrap:break-word}.page-support__btn--primary{background:var(--btn-gradient);color:#fff;border:1px solid var(--color-glow);box-shadow:0 6px 18px rgba(87,227,141,.22)}.page-support__btn--primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(87,227,141,.35);color:#fff}.page-support__btn--outline{background:transparent;color:var(--color-glow);border:2px solid var(--color-glow)}.page-support__btn--outline:hover{background:rgba(87,227,141,.12);color:var(--color-glow)}.page-support__btn--small{padding:10px 24px;margin-top:12px;font-size:.95rem}.page-support__btn--small:hover{transform:translateY(-2px)}.page-support__quick-links{max-width:1200px;margin:0 auto;padding:26px 16px 10px}.page-support__section-title,.page-support__content-title{color:var(--color-glow);font-weight:700;text-align:center;font-size:clamp(1.2rem,2vw,1.6rem);margin:0 0 8px;padding:0 12px}.page-support__section-desc{color:var(--color-text-sec);text-align:center;max-width:560px;margin:0 auto 22px;font-size:.95rem;line-height:1.7;padding:0 12px}.page-support__quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.page-support__quick-card{background:var(--color-card);border:1px solid var(--color-border);border-radius:14px;padding:22px 16px 18px;text-decoration:none;transition:all .3s ease;display:block;text-align:center}.page-support__quick-card:hover{background:var(--color-deep);border-color:var(--color-glow);transform:translateY(-3px)}.page-support__quick-icon{display:block;font-size:2rem;margin-bottom:8px}.page-support__quick-title{color:var(--color-text);font-weight:700;margin:0 0 4px;font-size:1rem}.page-support__quick-desc{color:var(--color-text-sec);margin:0;font-size:.85rem}.page-support__content-section{max-width:900px;margin:0 auto;padding:34px 16px 20px;border-bottom:1px solid var(--color-divider)}.page-support__content-title{text-align:center}.page-support__content-text{color:var(--color-text-sec);font-size:1rem;line-height:1.85;margin:0 0 14px}.page-support__content-text a{color:var(--color-glow);text-decoration:underline;text-underline-offset:3px}.page-support__steps{display:flex;gap:16px;margin:20px 0 18px;flex-wrap:wrap;justify-content:center}.page-support__step{flex:1;min-width:200px;max-width:280px;background:var(--color-card);border:1px solid var(--color-border);border-radius:14px;padding:18px;text-align:center}.page-support__step-num{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--btn-gradient);color:#fff;font-weight:700;margin-bottom:10px}.page-support__step-title{color:var(--color-glow);margin:0 0 4px;font-size:1rem}.page-support__step-desc{color:var(--color-text-sec);font-size:.85rem;margin:0}.page-support__grid-2col{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:14px 0}.page-support__card-box{background:var(--color-card);border:1px solid var(--color-border);border-radius:14px;padding:16px}.page-support__card-box-title{color:var(--color-gold);margin:0 0 10px;font-size:.95rem;text-transform:uppercase;letter-spacing:.5px}.page-support__list{margin:0;padding:0;list-style:none}.page-support__list-item{color:var(--color-text-sec);padding:6px 0 6px 18px;position:relative;font-size:.88rem;border-bottom:1px dashed var(--color-divider)}.page-support__list-item:last-child{border-bottom:none}.page-support__list-item::before{content:'';position:absolute;top:12px;left:0;width:8px;height:8px;background:var(--color-glow);border-radius:2px}.page-support__methods{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin:16px 0}.page-support__method-image{width:100%;max-width:280px;height:auto;aspect-ratio:400/200;object-fit:contain;border:1px solid var(--color-border);border-radius:8px}.page-support__guide-figure-img{width:100%;max-width:800px;height:auto;aspect-ratio:800/400;object-fit:cover;border-radius:12px;display:block;margin:6px auto 12px}.page-support__faq{max-width:800px;margin:20px auto}.page-support__faq-item{background:var(--color-card);border:1px solid var(--color-border);border-radius:12px;padding:0;overflow:hidden;transition:all .2s ease;margin-bottom:10px}.page-support__faq-item:hover{border-color:var(--color-glow)}.page-support__faq-question{color:var(--color-text);padding:14px 16px;font-weight:600;font-size:.95rem;cursor:pointer;display:flex;gap:12px;align-items:center;justify-content:space-between;list-style:none;margin:0}#cau-hoi .page-support__faq-question{display:flex}.page-support__faq-question span[data-faq-toggle]{color:var(--color-gold);font-weight:700;transition:transform .2s ease;min-width:24px;text-align:center}.page-support__faq-item[open] .page-support__faq-question span[data-faq-toggle]{transform:scale(1.1)}.page-support__faq-question::-webkit-details-marker{display:none}.page-support__faq-question::marker{content:none}.page-support__faq-answer{color:var(--color-text-sec);padding:0 16px 14px;margin:0;line-height:1.7;font-size:.92rem}.page-support__guide-section{max-width:1000px;margin:0 auto;padding:16px 16px 48px}.page-support__guide-title{color:var(--color-glow);text-align:center;font-size:clamp(1.1rem,1.6vw,1.4rem);margin:0}.page-support__guide-desc{color:var(--color-text-sec);text-align:center;margin:4px 0 16px}.page-support__guide-figure{margin:24px 0}.page-support__guide-link{color:var(--color-glow);font-size:1rem;font-weight:600;text-decoration:none;margin-top:4px}.page-support__guide-link:hover{color:var(--color-sub)}.page-support__card-area{background:var(--color-card);border-radius:16px;padding:28px 32px;border:1px solid var(--color-border);text-align:center;margin-top:20px}.page-support__card-main-title{color:var(--color-gold);font-size:clamp(1.1rem,1.6vw,1.3rem);font-weight:700;margin-bottom:6px}.page-support__card-subtitle{color:var(--color-text-sec);margin:0 0 18px}.page-support__card-buttons .page-support__btn{margin-bottom:0}@media(max-width:768px){.page-support__hero{padding-top:8px}.page-support__hero-title{font-size:1.1rem}.page-support__hero-subtitle{font-size:.9rem}.page-support__quick-grid{grid-template-columns:repeat(2,1fr);gap:12px}.page-support__grid-2col{grid-template-columns:1fr;gap:12px}.page-support__steps{gap:12px}.page-support__step{flex:1 1 100%;max-width:100%}.page-support__method-image{max-width:300px}.page-support__guide-title{font-size:1.15rem}.page-support__content-section{padding:24px 14px 16px}.page-support{max-width:100%;overflow-x:hidden}.page-support img{max-width:100%!important;height:auto!important}.page-support__btn{width:100%;display:inline-block}.page-support__hero-buttons{flex-direction:column;align-items:stretch}.page-support__quick-card{padding:14px 12px}.page-support__quick-desc{font-size:.8rem}.page-support__quick-title{font-size:.9rem}.page-support__hero-content{padding:8px 0 12px}}@media(min-width:769px) and (max-width:1024px){.page-support__quick-grid{grid-template-columns:repeat(2,1fr);gap:12px}.page-support__hero-subtitle{white-space:normal}.page-support__step{min-width:180px}}