/* Trợ Thính An Khang — trang trong (đợt 9). Tiền tố aki-; dùng lại biến + khối ak- của trang chủ */
.aki { font-family: var(--bf); color: var(--mu); font-size: 17px; line-height: 1.6; }
.aki .b9-w { max-width: 1220px; margin: 0 auto; padding: 0 20px; }
.aki h1, .aki h2, .aki h3, .aki b, .aki-h2 { font-family: var(--hf); color: var(--ink); }
.aki-h2 { font-size: 42px; line-height: 1.2; font-weight: 700; letter-spacing: -.01em; margin: 0 0 10px; color: var(--ink); }
.aki-h3 { font-size: 30px; font-weight: 700; margin: 0 0 18px; color: var(--ink); }
.aki-sub { font-size: 19px; color: var(--mu); margin: 0 0 32px; }
.aki-sec { padding: 64px 0; }
.aki-bg { background: #eaf4fc; }
.aki-pt0 { padding-top: 0; }
.aki .b9i-crumb, .aki .b9i-crumb a { font-size: 14px; color: var(--mu); }
.aki .b9i-crumb { margin: 0 0 14px; }
/* nút */
.aki-buy { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 56px; padding: 0 30px; border-radius: 8px; background: linear-gradient(180deg, #ff9a2a, #f47c0e); color: #fff !important; font-weight: 700; font-size: 18px; border: 0; box-shadow: 0 6px 16px rgba(244, 124, 14, .25); text-decoration: none; }
.aki-buy svg, .aki-call svg, .aki-ghost svg, .aki-ghost2 svg { width: 20px; height: 20px; }
.aki-call, .aki-ghost2 { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 56px; padding: 0 26px; border-radius: 8px; border: 2px solid var(--c2); color: var(--c2) !important; font-weight: 700; font-size: 18px; background: #fff; }
.aki-ghost { display: inline-flex; align-items: center; justify-content: center; min-height: 56px; padding: 0 30px; border-radius: 8px; border: 2px solid #fff; color: #fff !important; font-weight: 700; font-size: 18px; }
/* sản phẩm */
.aki-pd-top { padding: 22px 0 44px; }
.aki-pd-in { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 44px; align-items: start; }
.aki-gal-m { background: #dbe9f8; border-radius: 12px; overflow: hidden; aspect-ratio: 1.36 / 1; }
.aki-gal-m img { width: 100%; height: 100%; object-fit: cover; display: block; }
.aki-gal-t { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-top: 14px; }
.aki-gal-t button { padding: 0; margin: 0; border: 2px solid transparent; border-radius: 10px; overflow: hidden; background: #e6f0fa; aspect-ratio: 1 / 1; cursor: pointer; min-height: 0; }
.aki-gal-t button.on { border-color: var(--c2); }
.aki-gal-t img { width: 100%; height: 100%; object-fit: cover; display: block; }
.aki-tag { display: inline-block; background: var(--c2); color: #fff; font-size: 15px; font-weight: 600; padding: 5px 14px; border-radius: 6px; }
.aki-info h1 { font-size: 40px; line-height: 1.2; font-weight: 700; margin: 14px 0 10px; }
.aki-rate { display: flex; align-items: center; gap: 10px; font-size: 16px; }
.aki-rate .ak-stars svg { width: 20px; height: 20px; color: #f5b301; fill: #f5b301; }
.aki-rate b { color: var(--c2); }
.aki-price { display: flex; align-items: baseline; gap: 16px; margin: 10px 0 8px; }
.aki-price b { font-size: 46px; color: #f26a0c; font-weight: 800; line-height: 1.1; }
.aki-price del { font-size: 22px; color: #8a94a3; }
.aki-lead { margin: 0 0 12px; }
.aki-chk { list-style: none; margin: 0 0 18px; padding: 0; }
.aki-chk li { display: flex; align-items: center; gap: 12px; margin: 0 0 8px; color: var(--ink); font-weight: 500; }
.aki-chk svg { width: 24px; height: 24px; color: #fff; fill: var(--c2); flex: none; }
.aki-opt { display: grid; grid-template-columns: 110px minmax(0, 1fr); align-items: center; gap: 12px; margin: 0 0 16px; }
.aki-l { font-size: 16px; color: var(--ink); }
.aki-chips { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.aki-chips button { display: flex; align-items: center; justify-content: center; gap: 10px; min-height: 50px; margin: 0; border: 1.5px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink); font-size: 17px; font-weight: 600; text-transform: none; letter-spacing: 0; cursor: pointer; }
.aki-chips button i { width: 18px; height: 18px; border-radius: 50%; border: 2px solid #9aa7b8; display: none; }
.aki-chips button.on { border: 2px solid var(--c2); background: #f2f8ff; }
.aki-chips button.on i { display: block; border: 5px solid var(--c2); }
.aki .b9i-qty { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.aki .b9i-qty button { width: 44px; height: 44px; min-height: 0; margin: 0; padding: 0; background: #f4f7fb; border: 0; font-size: 20px; color: var(--ink); cursor: pointer; }
.aki .b9i-qty input { width: 64px; height: 44px; border: 0; border-left: 1px solid var(--line); border-right: 1px solid var(--line); text-align: center; margin: 0; padding: 0; box-shadow: none; font-size: 17px; -moz-appearance: textfield; }
.aki .b9i-qty input::-webkit-inner-spin-button { -webkit-appearance: none; }
.aki-btns { display: grid; grid-template-columns: 1.6fr 1fr; gap: 14px; margin: 6px 0 12px; }
.aki-cod { display: flex; align-items: center; justify-content: center; gap: 10px; font-size: 16px; color: var(--ink); }
.aki-cod img { width: 26px; height: 26px; }
.aki-trust { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); }
.aki-trust div { display: flex; align-items: center; gap: 10px; font-size: 15px; color: var(--ink); line-height: 1.35; }
.aki-trust img { width: 36px; height: 36px; flex: none; }
.aki-tabs { background: #f2f6fb; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.aki-tabs .b9-w { display: flex; gap: 8px; }
.aki-tabs a { padding: 18px 34px; font-size: 18px; color: var(--mu); border-bottom: 3px solid transparent; }
.aki-tabs a.on { color: var(--c2); border-color: var(--c2); font-weight: 600; background: #fff; }
.aki-desc { padding: 48px 0 30px; scroll-margin-top: 90px; }
.aki-desc-in { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 50px; align-items: center; }
.aki-desc-img img { width: 100%; border-radius: 10px; display: block; aspect-ratio: 1.34 / 1; object-fit: cover; }
.aki-f3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 26px; }
.aki-f3 > div { padding: 0 18px; border-left: 1px solid var(--line); text-align: center; }
.aki-f3 > div:first-child { border-left: 0; padding-left: 0; text-align: left; }
.aki-f3 img { width: 56px; height: 56px; display: inline-block; }
.aki-f3 b { display: block; font-size: 18px; color: var(--c2); margin: 10px 0 6px; }
.aki-f3 span { display: block; font-size: 14px; line-height: 1.5; }
.aki-spec { padding: 30px 0 10px; scroll-margin-top: 90px; }
.aki-tbl { width: 100%; max-width: 900px; margin: 18px auto 0; border-collapse: collapse; font-size: 16px; }
.aki-tbl th, .aki-tbl td { padding: 14px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.aki-tbl th { width: 220px; color: var(--ink); font-weight: 600; background: #f4f8fd; }
.aki-pd ~ .ak-sec, .aki-pd + * { }
.aki-rel { padding: 50px 0 64px; }
.aki-rcards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; margin-top: 20px; }
.aki-rcards a { display: block; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: #fff; color: var(--mu); }
.aki-rcards img { width: 100%; aspect-ratio: 1.45 / 1; object-fit: cover; display: block; }
.aki-rcards b { display: block; font-size: 19px; color: var(--ink); padding: 14px 16px 4px; }
.aki-rcards span { display: block; font-size: 15px; padding: 0 16px; line-height: 1.5; min-height: 46px; }
.aki-rcards em { display: flex; align-items: center; gap: 6px; font-style: normal; color: var(--c2); font-weight: 600; font-size: 15px; padding: 10px 16px 16px; }
.aki-rcards em svg { width: 16px; height: 16px; }
/* hero trang trong */
.aki-hero { position: relative; background: #e6f1fb; overflow: hidden; }
.aki-hero .b9-w { position: relative; z-index: 2; }
.aki-hero-t { padding: 34px 0 40px; max-width: 640px; }
.aki-hero h1 { font-size: 58px; line-height: 1.12; font-weight: 800; margin: 0 0 12px; letter-spacing: -.015em; }
.aki-hero p { font-size: 21px; margin: 0; }
.aki-hero-img { position: absolute; right: 0; top: 0; height: 100%; width: 46%; object-fit: cover; object-position: center; -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 22%); mask-image: linear-gradient(90deg, transparent 0, #000 22%); }
.aki-band { background: #e6f1fb; padding: 34px 0 38px; }
.aki-band h1 { font-size: 58px; line-height: 1.12; font-weight: 800; margin: 0 0 10px; }
.aki-band p { font-size: 21px; margin: 0; }
/* hướng dẫn */
.aki-steps { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.aki-steps > div { border: 1px solid var(--line); border-radius: 10px; padding: 8px; background: #fff; }
.aki-steps img { width: 100%; aspect-ratio: 2.25 / 1; object-fit: cover; border-radius: 6px; display: block; }
.aki-st { display: flex; gap: 18px; padding: 18px 14px 14px; }
.aki-st em { flex: none; width: 56px; height: 56px; border-radius: 50%; background: #f7941d; color: #fff; font-style: normal; font-weight: 800; font-size: 22px; display: flex; align-items: center; justify-content: center; font-family: var(--hf); }
.aki-st b { display: block; font-size: 22px; color: var(--c2); margin: 0 0 6px; }
.aki-st span { display: block; font-size: 16px; line-height: 1.55; }
.aki-tip { display: flex; align-items: center; gap: 14px; margin-top: 24px; padding: 14px 22px; border-radius: 8px; background: #e8f2fd; font-size: 15px; }
.aki-tip img { width: 30px; height: 30px; }
.aki-tip b { color: var(--c2); }
.aki-care { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); background: #fff; border-radius: 10px; overflow: hidden; }
.aki-care > div { display: flex; gap: 26px; align-items: flex-start; padding: 30px 36px; border-bottom: 1px solid var(--line); }
.aki-care > div:nth-child(odd) { border-right: 1px solid var(--line); }
.aki-care > div:nth-child(n+3) { border-bottom: 0; }
.aki-care img { width: 72px; height: 72px; flex: none; }
.aki-care b { display: block; font-size: 22px; color: var(--c2); margin-bottom: 6px; }
.aki-care span { display: block; font-size: 16px; }
.aki-faqw { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 50px; }
.aki-qa details { border: 1px solid var(--line); border-radius: 8px; margin: 0 0 10px; background: #fff; }
.aki-qa summary { padding: 16px 20px; font-weight: 600; color: var(--ink); font-size: 17px; cursor: pointer; }
.aki-qa details > div { padding: 0 20px 16px; font-size: 16px; }
.aki-help { display: grid; grid-template-columns: 80px minmax(0, 1fr) auto; align-items: center; gap: 24px; padding: 26px 40px; border-radius: 12px; background: #e6f1fb; }
.aki-help i { width: 80px; height: 80px; border-radius: 50%; background: var(--c2); color: #fff; display: flex; align-items: center; justify-content: center; }
.aki-help i svg { width: 38px; height: 38px; }
.aki-help b { display: block; font-size: 32px; color: var(--c2); line-height: 1.2; }
.aki-help span { display: block; font-size: 17px; }
.aki-tr3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 34px; }
.aki-tr3 > div { display: flex; gap: 16px; align-items: center; }
.aki-tr3 img { width: 54px; height: 54px; flex: none; }
.aki-tr3 b { display: block; font-size: 18px; color: var(--c2); }
.aki-tr3 span { display: block; font-size: 15px; }
/* giới thiệu */
.aki-wide img { width: 100%; height: 430px; object-fit: cover; display: block; }
.aki-story { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 50px; align-items: center; }
.aki-k { font-size: 15px; letter-spacing: .06em; text-transform: uppercase; color: var(--c2); margin-bottom: 8px; }
.aki-story .aki-h2 { font-size: 50px; margin-bottom: 16px; }
.aki-more { display: inline-flex; align-items: center; gap: 8px; margin-top: 6px; color: var(--c2) !important; font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }
.aki-more svg { width: 18px; height: 18px; }
.aki-story figure, .aki-c3 figure, .aki-cimg { margin: 0; }
.aki-story figure img { width: 100%; border-radius: 10px; display: block; aspect-ratio: 1.38 / 1; object-fit: cover; }
.aki-story figcaption, .aki-cimg figcaption { text-align: center; font-size: 15px; margin-top: 10px; color: var(--ink); }
.aki-v3, .aki-v4 { display: grid; gap: 18px; margin-top: 26px; }
.aki-v3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.aki-v4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.aki-v3 > div, .aki-v4 > div { background: #fff; border-radius: 10px; padding: 30px 26px; text-align: center; }
.aki-v3 img, .aki-v4 img { width: 76px; height: 76px; display: inline-block; }
.aki-v3 b, .aki-v4 b { display: block; font-size: 22px; color: var(--c2); margin: 12px 0 8px; }
.aki-v3 span, .aki-v4 span { display: block; font-size: 16px; }
.aki-c3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.aki-c3 img { width: 100%; aspect-ratio: 1.45 / 1; object-fit: cover; border-radius: 6px; display: block; }
.aki-c3 figcaption { text-align: center; font-family: var(--hf); font-weight: 700; color: var(--c2); font-size: 20px; margin-top: 12px; }
.aki-cta { background: var(--c2); padding: 44px 0; }
.aki-cta .b9-w { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.aki-cta h2 { color: #fff; font-size: 42px; margin: 0 0 8px; }
.aki-cta p { color: #dbe8f7; font-size: 19px; margin: 0; max-width: 520px; }
.aki-cta-b { display: grid; gap: 14px; min-width: 330px; }
/* liên hệ */
.aki-ctw { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 40px; align-items: start; }
.aki-fcard { border: 1px solid var(--line); border-radius: 12px; padding: 34px 36px; background: #fff; box-shadow: 0 6px 20px rgba(19, 50, 92, .05); }
.aki-fcard h2 { font-size: 36px; margin: 0 0 6px; }
.aki-fcard > p { margin: 0 0 20px; }
.aki-cform label { display: block; font-size: 16px; font-weight: 600; color: var(--ink); margin: 0 0 6px; }
.aki-cform label i { color: #e5484d; font-style: normal; }
.aki-cform input[type=text], .aki-cform input[type=tel], .aki-cform input[type=email], .aki-cform select, .aki-cform textarea { width: 100%; height: 48px; border: 1px solid #d6dfea; border-radius: 6px; box-shadow: none; font-size: 16px; margin: 0 0 16px; }
.aki-cform textarea { height: 110px; }
.aki-f2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 20px; }
.aki-qrow { display: flex; align-items: center; gap: 14px; margin: 0 0 16px; }
.aki-sub.aki-buy, .aki-cform .aki-sub { width: 100%; margin: 4px 0 10px; }
.aki-lock { display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 15px; margin: 0; }
.aki-lock svg { width: 16px; height: 16px; }
.aki-cc { display: flex; gap: 22px; align-items: center; background: #e8f2fd; border-radius: 10px; padding: 22px 24px; margin: 0 0 14px; }
.aki-cc i { width: 60px; height: 60px; flex: none; border-radius: 50%; border: 2px solid var(--c2); color: var(--c2); display: flex; align-items: center; justify-content: center; }
.aki-cc i svg { width: 28px; height: 28px; }
.aki-cc small { display: block; font-size: 16px; font-weight: 600; color: var(--c2); }
.aki-cc a, .aki-cc b { display: block; font-size: 22px; font-weight: 700; color: var(--c2) !important; font-family: var(--hf); line-height: 1.35; word-break: break-word; }
.aki-cc a.aki-big { font-size: 38px; }
.aki-cc span { display: block; font-size: 15px; }
.aki-hr { display: flex; gap: 12px; align-items: flex-start; margin: 4px 0 16px; padding-left: 4px; }
.aki-hr svg { width: 22px; height: 22px; color: var(--c2); flex: none; margin-top: 2px; }
.aki-hr b { display: block; color: var(--c2); font-size: 16px; }
.aki-hr span { font-size: 15px; }
.aki-cimg img { width: 100%; border-radius: 10px; aspect-ratio: 1.9 / 1; object-fit: cover; display: block; }
.aki-maph { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.aki-maph .aki-sub { margin: 0; }
.aki-ghost2 { min-height: 48px; font-size: 16px; }
@media (max-width: 1100px) {
  .aki-hero h1, .aki-band h1 { font-size: 46px; }
  .aki-v4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 849px) {
  .aki { font-size: 16px; }
  .aki-sec { padding: 44px 0; }
  .aki-h2, .aki-story .aki-h2 { font-size: 30px; }
  .aki-sub { font-size: 17px; margin-bottom: 22px; }
  .aki-pd-in, .aki-desc-in, .aki-story, .aki-ctw, .aki-faqw { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .aki-info h1 { font-size: 30px; }
  .aki-price b { font-size: 36px; }
  .aki-gal-t { gap: 8px; }
  .aki-opt { grid-template-columns: 90px minmax(0, 1fr); }
  .aki-btns { grid-template-columns: minmax(0, 1fr); }
  .aki-trust { grid-template-columns: minmax(0, 1fr); }
  .aki-tabs .b9-w { overflow-x: auto; gap: 0; }
  .aki-tabs a { padding: 14px 16px; font-size: 16px; white-space: nowrap; }
  .aki-f3 { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .aki-f3 > div { border-left: 0; padding: 0; text-align: left; display: grid; grid-template-columns: 50px minmax(0, 1fr); gap: 2px 14px; }
  .aki-f3 img { width: 46px; height: 46px; grid-row: span 2; }
  .aki-f3 b { margin: 0; }
  .aki-tbl th { width: 120px; }
  .aki-tbl th, .aki-tbl td { padding: 10px 12px; font-size: 15px; }
  .aki-rcards, .aki-steps, .aki-care, .aki-c3, .aki-v3, .aki-tr3 { grid-template-columns: minmax(0, 1fr); }
  .aki-v4 { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .aki-v4 > div { padding: 20px 12px; }
  .aki-v4 b { font-size: 17px; }
  .aki-care > div { border-right: 0 !important; border-bottom: 1px solid var(--line) !important; padding: 22px; gap: 18px; }
  .aki-care > div:last-child { border-bottom: 0 !important; }
  .aki-care img { width: 54px; height: 54px; }
  .aki-hero-t { padding: 24px 0 220px; }
  .aki-hero h1, .aki-band h1 { font-size: 36px; }
  .aki-hero p, .aki-band p { font-size: 17px; }
  .aki-hero-img { top: auto; bottom: 0; height: 200px; width: 100%; -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 30%); mask-image: linear-gradient(180deg, transparent 0, #000 30%); }
  .aki-wide img { height: 220px; }
  .aki-help { grid-template-columns: 56px minmax(0, 1fr); padding: 20px; }
  .aki-help i { width: 56px; height: 56px; }
  .aki-help b { font-size: 22px; }
  .aki-help .aki-buy { grid-column: 1 / -1; }
  .aki-cta .b9-w { flex-direction: column; align-items: stretch; }
  .aki-cta h2 { font-size: 30px; }
  .aki-cta-b { min-width: 0; }
  .aki-fcard { padding: 22px 18px; }
  .aki-fcard h2 { font-size: 26px; }
  .aki-f2 { grid-template-columns: minmax(0, 1fr); }
  .aki-cc { padding: 16px; gap: 14px; }
  .aki-cc i { width: 48px; height: 48px; }
  .aki-cc a.aki-big { font-size: 28px; }
  .aki-cc a, .aki-cc b { font-size: 17px; }
  .aki-maph { flex-direction: column; align-items: flex-start; }
}
.aki-hero-ct .aki-hero-img { object-position: center 22%; }
.aki-chk svg { color: var(--c2); fill: none; width: 26px; height: 26px; }
@media (min-width: 850px) { .aki-info h1 { font-size: 36px; } }
.aki h1, .aki .aki-h2, .aki-fcard h2, .aki .aki-h3, .aki-qa summary { color: var(--c2); }
.aki-opt .b9i-qty { justify-self: start; }
@media (max-width: 849px) { .aki-cform .aki-sub { font-size: 16px; line-height: 1.3; padding: 10px 16px; } }
@media (min-width: 850px) { .aki-tip img { width: 40px; height: 40px; } .aki-care img { width: 88px; height: 88px; } }