/* Giao diện riêng trang landing (index.html). Dùng chung biến màu trong style.css. */
.lp { --grad: linear-gradient(135deg, #2E9890 0%, #1F7F9E 100%); --navy-2: #16205C; --shadow: 0 24px 60px rgba(30,45,120,.14); --shadow-sm: 0 6px 18px rgba(30,45,120,.08) }
.lp b, .lp strong { color: var(--teal) }

/* Thanh trên */
.lp .bar-top { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.88); backdrop-filter: saturate(160%) blur(10px); -webkit-backdrop-filter: saturate(160%) blur(10px); border-bottom: 1px solid rgba(217,224,234,.7) }
.lp .bar-top .wrap { display: flex; align-items: center; justify-content: space-between; height: 62px }
.lp .bar-top img { height: 30px }
.lp .bar-top a.mini { display: none; font-size: 14px; font-weight: 700; color: var(--navy); text-decoration: none; border: 1.5px solid var(--line); border-radius: 999px; padding: 8px 16px }
.lp .bar-top a.mini:hover { border-color: var(--teal); color: var(--teal) }

/* Hero */
.lp .hero2 { position: relative; overflow: hidden; padding: 34px 0 48px;
  background:
    radial-gradient(600px 320px at 85% -10%, rgba(46,152,144,.16), transparent 70%),
    radial-gradient(520px 300px at -10% 30%, rgba(30,45,120,.10), transparent 70%),
    linear-gradient(180deg, #FFFFFF 0%, #F4F7FB 100%) }
.lp .hero2 .grid { display: grid; gap: 26px; align-items: center }
.lp .tag { display: inline-flex; align-items: center; gap: 8px; background: #EAF6F5; color: #1F6F69; border: 1px solid #BFE5E0; font-weight: 700; font-size: 13px; letter-spacing: .4px; padding: 7px 14px; border-radius: 999px }
.lp .tag i { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 4px rgba(46,152,144,.18) }
.lp h1.big { font-size: 36px; line-height: 1.12; font-weight: 800; letter-spacing: -1px; color: var(--navy); margin: 16px 0 14px }
.lp h1.big em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent }
.lp .lead2 { font-size: 17px; line-height: 1.6; color: #4A5568; max-width: 560px }
.lp .chips { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 16px; font-size: 14px; font-weight: 600; color: #4A5568 }
.lp .chips span { display: inline-flex; align-items: center; gap: 7px }
.lp .chips svg { width: 18px; height: 18px; flex: 0 0 18px }
.lp .stats2 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 22px; max-width: 470px }
.lp .stats2 div { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 12px 14px; box-shadow: var(--shadow-sm) }
.lp .stats2 b { display: block; font-size: 26px; line-height: 1; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent }
.lp .stats2 span { display: block; font-size: 13px; font-weight: 600; color: var(--navy); margin-top: 6px }

/* Thẻ form */
.lp .fcard { position: relative; background: #fff; border-radius: 24px; box-shadow: var(--shadow); border: 1px solid rgba(217,224,234,.9); overflow: hidden }
.lp .fcard::before { content: ''; position: absolute; inset: 0 0 auto 0; height: 5px; background: var(--grad) }
.lp .fcard .in { padding: 26px 22px 22px }
.lp .fcard .eb { text-align: center; font-size: 12px; font-weight: 800; letter-spacing: 2px; color: var(--teal) }
.lp .fcard h2 { text-align: center; font-size: 21px; line-height: 1.3; color: var(--navy); margin: 6px 0 4px; font-weight: 800 }
.lp .fcard .sub { text-align: center; font-size: 14px; color: var(--muted); margin-bottom: 8px }
.lp .fcard form, .lp .fcard .done { padding: 0; background: none }
.lp .fcard label { font-size: 14px; margin: 14px 0 6px }
.lp .fcard label small { font-weight: 500; color: #8A93A3 }
.lp .fcard input[type=text], .lp .fcard input[type=tel], .lp .fcard input[type=email] { background: #F8FAFC; border: 1.5px solid var(--line); border-radius: 14px; padding: 14px 16px; font-size: 16px; transition: border-color .15s, box-shadow .15s, background .15s }
.lp .fcard input:focus { background: #fff; border-color: var(--teal); box-shadow: 0 0 0 4px rgba(46,152,144,.14) }
.lp .btn-g { display: block; width: 100%; margin-top: 20px; border: 0; border-radius: 14px; padding: 17px 20px; background: var(--grad); color: #fff; font: inherit; font-size: 18px; font-weight: 800; cursor: pointer; box-shadow: 0 12px 26px rgba(46,152,144,.35); transition: transform .15s, box-shadow .15s; text-align: center; text-decoration: none }
.lp .btn-g:hover { transform: translateY(-1px); box-shadow: 0 16px 32px rgba(46,152,144,.42) }
.lp .btn-g[disabled] { opacity: .65; cursor: wait; transform: none }
.lp .fcard .note { font-size: 12.5px; line-height: 1.5 }

/* Khối nội dung */
.lp .sec { padding: 56px 0 }
.lp .sec .head { text-align: center; max-width: 640px; margin: 0 auto 30px }
.lp .sec .head .k { font-size: 13px; font-weight: 800; letter-spacing: 2px; color: var(--teal); text-transform: uppercase }
.lp .sec .head h2 { font-size: 28px; line-height: 1.2; font-weight: 800; letter-spacing: -.5px; color: var(--navy); margin: 8px 0 8px }
.lp .sec .head p { color: var(--muted); font-size: 16px }

/* 3 thẻ Vấn đề / Gốc rễ / Giải pháp */
.lp .pas2 { display: grid; gap: 14px }
.lp .pas2 .c { border-radius: 20px; padding: 22px; border: 1px solid; transition: transform .15s, box-shadow .15s }
.lp .pas2 .c:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm) }
.lp .pas2 .ic { width: 44px; height: 44px; border-radius: 14px; display: flex; align-items: center; justify-content: center; margin-bottom: 14px }
.lp .pas2 .ic svg { width: 24px; height: 24px }
.lp .pas2 h3 { font-size: 18px; font-weight: 800; margin-bottom: 6px }
.lp .pas2 p { font-size: 15.5px; line-height: 1.6 }
.lp .pas2 .c1 { background: #FFF5F4; border-color: #F8D4CF } .lp .pas2 .c1 .ic { background: #FDE2DE; color: #D6453A } .lp .pas2 .c1 h3 { color: #B93A2E } .lp .pas2 .c1 p { color: #7A3A33 }
.lp .pas2 .c2 { background: #FFFAEB; border-color: #F6E3AE } .lp .pas2 .c2 .ic { background: #FCEFC7; color: #B7791F } .lp .pas2 .c2 h3 { color: #975A16 } .lp .pas2 .c2 p { color: #6B4E1E }
.lp .pas2 .c3 { background: #EDF8F6; border-color: #BFE5E0 } .lp .pas2 .c3 .ic { background: #D3EFEB; color: var(--teal) } .lp .pas2 .c3 h3 { color: #1F6F69 } .lp .pas2 .c3 p { color: #24504C }
.lp .pas2 b { color: inherit; font-weight: 800 }

/* 4 bước */
.lp .alt { background: linear-gradient(180deg, #F4F7FB 0%, #FFFFFF 100%) }
.lp .steps2 { display: grid; gap: 14px; counter-reset: b }
.lp .steps2 .s { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 20px 20px 20px 78px; box-shadow: var(--shadow-sm) }
.lp .steps2 .s::before { counter-increment: b; content: counter(b, decimal-leading-zero); position: absolute; left: 20px; top: 18px; width: 44px; height: 44px; border-radius: 14px; background: var(--navy); color: #fff; font-weight: 800; font-size: 16px; display: flex; align-items: center; justify-content: center }
.lp .steps2 h3 { font-size: 17px; font-weight: 800; color: var(--navy); margin-bottom: 4px }
.lp .steps2 p { font-size: 15px; color: #4A5568; line-height: 1.55 }

/* Câu hỏi thường gặp */
.lp .faq2 { max-width: 760px; margin: 0 auto; display: grid; gap: 10px }
.lp .faq2 details { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 0; transition: border-color .15s, box-shadow .15s }
.lp .faq2 details[open] { border-color: #BFE5E0; box-shadow: var(--shadow-sm) }
.lp .faq2 summary { padding: 18px 20px; font-size: 16px; font-weight: 700; color: var(--navy); align-items: center }
.lp .faq2 summary::after { content: ''; width: 10px; height: 10px; border-right: 2.5px solid var(--teal); border-bottom: 2.5px solid var(--teal); transform: rotate(45deg); margin: -4px 4px 0 0; transition: transform .2s }
.lp .faq2 details[open] summary::after { content: ''; transform: rotate(-135deg); margin-top: 4px }
.lp .faq2 details p { margin: 0; padding: 0 20px 18px; color: #4A5568; font-size: 15px; line-height: 1.6 }

/* Kêu gọi cuối */
.lp .cta2 { padding: 0 0 64px }
.lp .cta2 .box2 { position: relative; overflow: hidden; border-radius: 28px; padding: 40px 24px; text-align: center; color: #fff;
  background: radial-gradient(500px 240px at 90% 0%, rgba(46,152,144,.55), transparent 70%), linear-gradient(135deg, #1E2D78 0%, #16205C 100%) }
.lp .cta2 h2 { font-size: 26px; line-height: 1.25; font-weight: 800; letter-spacing: -.5px; margin-bottom: 8px }
.lp .cta2 p { color: #C9D2EE; margin-bottom: 22px }
.lp .cta2 .btn-g { display: inline-block; width: auto; padding: 16px 34px; margin: 0 }

.lp footer { background: #fff; color: var(--muted); border-top: 1px solid var(--line) }
.lp footer a { color: var(--navy) }
.lp footer strong { color: var(--navy) !important }

.lp .sticky .btn { background: var(--grad); border-radius: 14px; font-weight: 800 }

@media (min-width: 760px) {
  .lp .bar-top a.mini { display: inline-block }
  .lp .hero2 { padding: 64px 0 76px }
  .lp .hero2 .grid { grid-template-columns: 1.1fr .9fr; gap: 56px }
  .lp h1.big { font-size: 52px; letter-spacing: -1.5px }
  .lp .lead2 { font-size: 18px }
  .lp .fcard .in { padding: 32px 30px 28px }
  .lp .sec { padding: 80px 0 }
  .lp .sec .head h2 { font-size: 36px }
  .lp .pas2 { grid-template-columns: repeat(3, 1fr); gap: 18px }
  .lp .steps2 { grid-template-columns: 1fr 1fr; gap: 18px }
  .lp .cta2 .box2 { padding: 56px 40px }
  .lp .cta2 h2 { font-size: 34px }
}

/* Bố cục đầu trang: điện thoại = tiêu đề → form → số liệu; máy tính = trái tiêu đề + số liệu, phải form */
.lp .hero2 .grid { grid-template-areas: "t" "f" "s" }
.lp .hero2 .h-text { grid-area: t } .lp .hero2 .fcard { grid-area: f } .lp .hero2 .h-stats { grid-area: s }
.lp .h-stats .stats2 { margin-top: 0 }
@media (min-width: 760px) {
  .lp .hero2 .grid { grid-template-areas: "t f" "s f"; align-items: start; row-gap: 26px }
  .lp .hero2 .h-text { align-self: end }
}
.lp .cta2 h2 { color: #fff }
.lp h1.big em { white-space: nowrap }

/* Trang ưu đãi (uu-dai.html) dùng chung kiểu chữ với landing */
.lp.page, .lp .page { background: radial-gradient(600px 320px at 85% -10%, rgba(46,152,144,.14), transparent 70%), linear-gradient(180deg, #FFFFFF 0%, #F4F7FB 100%) }
.lp .offer .lead2 { margin-top: 0 }
.lp .eb-l { margin-top: 26px; font-size: 13px; font-weight: 800; letter-spacing: 2px; color: var(--teal); text-transform: uppercase }
.lp .price-g { justify-content: center; margin: 10px 0 4px }
.lp .price-g .v { font-size: 44px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; padding-bottom: 4px }
.lp .fcard .link-no { text-align: center; font-size: 14.5px }
.lp .ticks li { font-size: 16.5px }

/* Hai trang cảm ơn + bảng hỏi bật lên dùng chung kiểu chữ landing */
.lp .page h1.big { margin-top: 14px }
.lp .page p { color: #4A5568 }
.lp .flow li { border-radius: 16px; box-shadow: var(--shadow-sm) }
.lp .flow .n { background: var(--navy); border-radius: 12px }
.lp .social a { border-width: 1px; border-radius: 16px; box-shadow: var(--shadow-sm) }
.lp .social a:hover { border-color: var(--teal) }
.lp .wow-ok { background: var(--grad) }
.lp .sheet { border-radius: 24px 24px 0 0 }
.lp .sheet-head h3 { font-weight: 800 }
.lp .opt { border-width: 1.5px; border-radius: 12px; font-weight: 600 }
.lp .opt.on { border-color: var(--teal); background: #EAF6F5; color: var(--navy) }
.lp .sheet .btn { background: var(--grad); border-radius: 14px; font-weight: 800; box-shadow: 0 10px 22px rgba(46,152,144,.32) }
@media (min-width: 760px) { .lp .sheet { border-radius: 24px } }