/* cyrillic-ext */

/* cyrillic */

/* greek-ext */

/* greek */

/* math */

/* symbols */

/* vietnamese */

/* latin-ext */

/* latin */

/* cyrillic-ext */

/* cyrillic */

/* greek-ext */

/* greek */

/* math */

/* symbols */

/* vietnamese */

/* latin-ext */

/* latin */

/* cyrillic-ext */

/* cyrillic */

/* greek-ext */

/* greek */

/* math */

/* symbols */

/* vietnamese */

/* latin-ext */

/* latin */

/* cyrillic-ext */

/* cyrillic */

/* greek-ext */

/* greek */

/* math */

/* symbols */

/* vietnamese */

/* latin-ext */

/* latin */

/* cyrillic-ext */

/* cyrillic */

/* greek-ext */

/* greek */

/* math */

/* symbols */

/* vietnamese */

/* latin-ext */

/* latin */

  :root {
    --orange: #F58220;
    --orange-dark: #E06D10;
    --orange-soft: #FEF1E5;
    --green: #4CAF50;
    --green-dark: #3B8A3E;
    --green-deep: #2C6E2F;
    --green-soft: #EAF6EB;
    --green-tint: #F3FAF3;
    --ink: #3f3f3f;
    --ink-strong: #3f3f3f;
    --body: #55605A;
    --muted: #8A958D;
    --line: #EAEEEA;
    --bg: #F5F7F5;
    --white: #ffffff;
    /* Lục giác ĐỀU nội tiếp box vuông (cạnh xiên = cạnh dọc). Box cũ full-width bị bè ngang. */
    --hex: polygon(50% 0%, 93.3% 25%, 93.3% 75%, 50% 100%, 6.7% 75%, 6.7% 25%);
    --shadow-xs: 0 1px 3px rgba(30,42,34,0.05);
    --shadow-sm: 0 3px 14px rgba(30,42,34,0.06);
    --shadow-md: 0 14px 40px rgba(30,42,34,0.09);
    --shadow-lg: 0 28px 64px rgba(30,42,34,0.13);
    --maxw: 1160px;
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body { margin: 0; background: var(--white); color: var(--body); font-family: "Roboto", system-ui, sans-serif; font-size: 17px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
  h1,h2,h3,h4 { color: var(--ink-strong); font-weight: 900; line-height: 1.16; margin: 0; letter-spacing: -0.015em; }
  p { margin: 0; }
  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; display: block; }
  .wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
  section { padding: 72px 0; position: relative; }

  /* eyebrow */
  .ey { display: inline-flex; align-items: center; gap: 9px; font-size: 13px; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; color: var(--orange); }
  .ey .d { width: 22px; height: 22px; clip-path: var(--hex); background: var(--orange-soft); color: var(--orange); display: inline-flex; align-items: center; justify-content: center; }
  .ey .d svg { width: 13px; height: 13px; }
  .ey.green { color: var(--green-dark); }
  .ey.green .d { background: var(--green-soft); color: var(--green-dark); }

  .sec-head { text-align: center; max-width: 760px; margin: 0 auto 44px; }
  .sec-head .ey { margin-bottom: 16px; }
  .sec-head h2 { font-size: clamp(30px, 4.2vw, 46px); }
  .sec-head h2 .o { color: var(--orange); }
  .sec-head p { margin-top: 16px; font-size: 18px; color: var(--body); }

  /* buttons */
  .btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; font-family: inherit; font-weight: 700; font-size: 17px; padding: 15px 30px; border: none; border-radius: 999px; cursor: pointer; transition: transform .16s ease, box-shadow .16s ease, background .16s ease; }
  .btn-cta { background: var(--orange); color: #fff; box-shadow: 0 10px 24px rgba(245,130,32,0.30); }
  .btn-cta:hover { background: var(--orange-dark); transform: translateY(-2px); box-shadow: 0 14px 30px rgba(245,130,32,0.4); }
  .btn-ghost { background: #fff; color: var(--green-dark); border: 2px solid var(--green); }
  .btn-ghost:hover { background: var(--green-soft); }
  .btn-lg { padding: 18px 40px; font-size: 19px; }
  .btn svg { width: 19px; height: 19px; }

  /* ============ NAV ============ */
  header.nav { position: sticky; top: 0; z-index: 60; background: rgba(255,255,255,0.9); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
  .nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 13px 24px; max-width: var(--maxw); margin: 0 auto; }
  .nav-logo { height: 34px; }
  .nav-right { display: flex; align-items: center; gap: 16px; }
  .nav-tag { font-size: 14px; font-weight: 500; color: var(--body); }
  .nav-tag b { color: var(--orange); }
  @media (max-width: 720px){ .nav-tag { display: none; } }

  /* ============ HERO ============ */
  .hero { background: radial-gradient(900px 500px at 85% 0%, var(--green-soft), transparent 55%), linear-gradient(180deg, #fff 0%, var(--green-tint) 100%); overflow: hidden; padding: 60px 0 68px; }
  .hero-grid { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 52px; align-items: center; }
  .hero h1 { font-size: clamp(36px, 5vw, 56px); margin-top: 18px; }
  .hero h1 .o { color: var(--orange); display: block; }
  .hero .sub { font-size: 20px; font-weight: 500; color: var(--ink); margin-top: 16px; }
  .hero .lead { margin-top: 14px; font-size: 16.5px; color: var(--body); max-width: 540px; }
  .hero .lead b { color: var(--green-dark); }
  .checks { display: grid; gap: 12px; margin-top: 26px; }
  .check { display: flex; align-items: center; gap: 12px; font-weight: 500; color: var(--ink); font-size: 16px; }
  .check .tk { flex: none; width: 27px; height: 27px; clip-path: var(--hex); background: var(--green); color: #fff; display: inline-flex; align-items: center; justify-content: center; }
  .check .tk svg { width: 15px; height: 15px; }
  .price-box { margin-top: 28px; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 18px 22px; box-shadow: var(--shadow-sm); display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
  .price-box .free { background: var(--orange); color: #fff; font-weight: 900; font-size: 15px; padding: 8px 16px; border-radius: 999px; white-space: nowrap; }
  .price-box .m { flex: 1; min-width: 190px; }
  .price-box .m .k { font-size: 13px; color: var(--muted); }
  .price-box .m .v { font-size: 17px; font-weight: 700; color: var(--ink); }
  .price-box .m .v span { color: var(--green-dark); }
  .hero-cta { margin-top: 28px; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
  .hero-cta .note { font-size: 14px; color: var(--muted); }

  .hero-photo { position: relative; justify-self: center; width: 100%; max-width: 400px; aspect-ratio: 1/1; }
  .hp-ring { position: absolute; inset: -2.5%; clip-path: var(--hex); background: linear-gradient(155deg, var(--green), var(--orange)); box-shadow: var(--shadow-lg); }
  .hp-pad { position: absolute; inset: 2.5%; clip-path: var(--hex); background: #fff; }
  .hp-photo { position: absolute; inset: 4%; clip-path: var(--hex); overflow: hidden; }
  .hp-photo image-slot { width: 100%; height: 100%; }
  .float { position: absolute; z-index: 4; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 11px 15px; box-shadow: var(--shadow-md); display: flex; align-items: center; gap: 10px; }
  .float .fi { width: 34px; height: 34px; clip-path: var(--hex); display: flex; align-items: center; justify-content: center; flex: none; }
  .float .fi.g { background: var(--green-soft); color: var(--green-dark); }
  .float .fi.o { background: var(--orange-soft); color: var(--orange); }
  .float .fi svg { width: 17px; height: 17px; }
  .float .ft { font-weight: 700; font-size: 14.5px; color: var(--ink); line-height: 1.1; }
  .float .fs { font-size: 12px; color: var(--muted); }
  .float.f1 { top: 4%; left: -8%; }
  @media (max-width: 480px){ .float.f1{left:-2%;} }

  /* ============ generic ============ */
  .grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
  .grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
  .card { background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 30px; box-shadow: var(--shadow-xs); transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
  .card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: #DCE6DD; }
  .ibox { width: 56px; height: 56px; clip-path: var(--hex); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 18px; }
  .ibox svg { width: 27px; height: 27px; }
  .ibox.green { background: var(--green-soft); color: var(--green-dark); }
  .ibox.orange { background: var(--orange-soft); color: var(--orange); }
  .card h3 { font-size: 20px; margin-bottom: 8px; }
  .card p { font-size: 15.5px; color: var(--body); }

  /* ============ SEC 2 · process ============ */
  .band { background: var(--bg); }
  .proc { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
  .step { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 22px 20px; box-shadow: var(--shadow-xs); }
  .step .num { font-size: 13px; font-weight: 900; color: var(--orange); }
  .step .ic { width: 46px; height: 46px; clip-path: var(--hex); background: var(--green-soft); color: var(--green-dark); display: flex; align-items: center; justify-content: center; margin: 12px 0; }
  .step .ic svg { width: 23px; height: 23px; }
  .step .lbl { font-weight: 700; color: var(--ink); font-size: 16px; line-height: 1.15; }
  .review-note { text-align: center; margin-top: 36px; font-size: 17px; color: var(--body); }
  .review-note b { color: var(--green-dark); }

  /* ============ SEC 4 · modules ============ */
  .modules { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; }
  .module { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 28px 30px; box-shadow: var(--shadow-xs); overflow: hidden; transition: transform .18s ease, box-shadow .18s ease; }
  .module:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
  .module::before { content:""; position: absolute; left: 0; top: 0; bottom: 0; width: 6px; background: linear-gradient(var(--green), var(--orange)); }
  .mhead { display: flex; align-items: center; gap: 15px; margin-bottom: 14px; }
  .mnum { flex: none; width: 52px; height: 52px; clip-path: var(--hex); background: linear-gradient(150deg, var(--green), var(--green-deep)); color: #fff; font-weight: 900; font-size: 22px; display: flex; align-items: center; justify-content: center; }
  .mtag { font-size: 12.5px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--orange); }
  .mtitle { font-size: 20px; font-weight: 900; color: var(--ink-strong); line-height: 1.12; }
  .module p.mdesc { font-size: 15px; color: var(--body); margin-bottom: 16px; }
  .outcome { display: flex; align-items: flex-start; gap: 11px; background: var(--green-tint); border: 1px solid var(--green-soft); border-radius: 14px; padding: 13px 15px; }
  .outcome .oi { flex: none; width: 30px; height: 30px; clip-path: var(--hex); background: var(--green); color: #fff; display: flex; align-items: center; justify-content: center; margin-top: 1px; }
  .outcome .oi svg { width: 16px; height: 16px; }
  .outcome .ot { font-size: 14.5px; color: var(--ink); }
  .outcome .ot b { color: var(--green-dark); }

  /* ============ SEC 5 · session ============ */
  .feat-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px 36px; max-width: 860px; margin: 0 auto; }
  .feat { display: flex; align-items: center; gap: 14px; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; box-shadow: var(--shadow-xs); }
  .feat .tk { flex: none; width: 34px; height: 34px; clip-path: var(--hex); background: var(--green); color: #fff; display: flex; align-items: center; justify-content: center; }
  .feat .tk svg { width: 18px; height: 18px; }
  .feat span { font-weight: 500; color: var(--ink); font-size: 16px; }

  /* ============ SEC 7 · instructor ============ */
  .instructor { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: 46px; align-items: center; background: linear-gradient(160deg, var(--green) 0%, var(--green-deep) 100%); border-radius: 30px; padding: 44px; box-shadow: var(--shadow-lg); }
  .instructor .photo { position: relative; width: 100%; max-width: 300px; aspect-ratio: 1/1; justify-self: center; }
  .instructor .ring { position: absolute; inset: -3%; clip-path: var(--hex); background: var(--orange); }
  .instructor .pad { position: absolute; inset: 2%; clip-path: var(--hex); background: #fff; }
  .instructor .pin { position: absolute; inset: 5%; clip-path: var(--hex); overflow: hidden; }
  .instructor .pin image-slot { width: 100%; height: 100%; }
  .instructor .ey { color: #CFEBD0; }
  .instructor .ey .d { background: rgba(255,255,255,0.16); color: #fff; }
  .instructor h3 { color: #fff; font-size: 40px; }
  .instructor h3 .o { color: #FFD9B3; }
  .instructor .roles { display: flex; flex-direction: column; gap: 12px; margin: 22px 0; }
  .instructor .role { display: flex; align-items: center; gap: 13px; color: #fff; font-size: 16.5px; font-weight: 500; }
  .instructor .role .ic { width: 40px; height: 40px; clip-path: var(--hex); background: rgba(255,255,255,0.16); color: #fff; display: flex; align-items: center; justify-content: center; flex: none; }
  .instructor .role .ic svg { width: 19px; height: 19px; }
  .instructor .bio { color: #EAF7EB; font-size: 16.5px; }

  /* ============ SEC 8 · info ============ */
  .info-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
  .info { background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 28px; box-shadow: var(--shadow-xs); border-bottom: 4px solid var(--orange); }
  .info .ic { width: 52px; height: 52px; clip-path: var(--hex); background: var(--green-soft); color: var(--green-dark); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
  .info .ic svg { width: 25px; height: 25px; }
  .info .k { font-size: 13px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }
  .info .v { font-size: 19px; font-weight: 900; color: var(--ink-strong); margin-top: 5px; line-height: 1.25; }
  .info .v small { display: block; font-weight: 400; font-size: 14px; color: var(--body); margin-top: 3px; }

  /* ============ SEC 9 · tuition (single box, update LDP) ============ */
  .tuition-one { max-width: 860px; margin: 0 auto; background: #fff; border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow-md); overflow: hidden; }
  .tuition-one .free-banner { background: linear-gradient(150deg, var(--orange), #ff9f45); color: #fff; text-align: center; padding: 40px 32px 34px; position: relative; }
  .tuition-one .free-banner .gift { font-size: 46px; }
  .tuition-one .free-banner .tag { font-size: 14px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: rgba(255,255,255,0.9); }
  .tuition-one .free-banner h3 { color: #fff; font-size: clamp(34px, 5vw, 52px); margin: 6px 0 10px; letter-spacing: -0.02em; }
  .tuition-one .free-banner p { color: rgba(255,255,255,0.95); font-size: 16px; max-width: 560px; margin: 0 auto; }
  .tuition-one .commit-row { padding: 34px 40px; display: grid; grid-template-columns: auto 1fr; gap: 32px; align-items: center; }
  .tuition-one .fee { text-align: center; padding-right: 32px; border-right: 1px solid var(--line); }
  .tuition-one .fee .k { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--green-dark); }
  .tuition-one .fee .amount { font-size: 40px; font-weight: 900; color: var(--ink-strong); line-height: 1.05; margin-top: 4px; }
  .tuition-one .fee .amount small { font-size: 18px; color: var(--muted); font-weight: 700; }
  .tuition-one .fee .refundpill { display: inline-block; margin-top: 10px; background: var(--green-soft); color: var(--green-dark); font-weight: 700; font-size: 13px; padding: 6px 14px; border-radius: 999px; }
  .tuition-one .refund { font-weight: 700; color: var(--ink-strong); margin-bottom: 12px; }
  .tuition-one .cond { display: grid; gap: 10px; }
  .tuition-one .cond .r { display: flex; align-items: flex-start; gap: 10px; font-size: 15.5px; color: var(--body); }
  .tuition-one .cond .r .tk { flex: none; width: 24px; height: 24px; clip-path: var(--hex); background: var(--green); color: #fff; display: flex; align-items: center; justify-content: center; margin-top: 2px; }
  .tuition-one .cond .r .tk svg { width: 14px; height: 14px; }
  @media (max-width: 640px){
    .tuition-one .commit-row { grid-template-columns: 1fr; gap: 22px; padding: 28px 24px; }
    .tuition-one .fee { padding-right: 0; border-right: none; border-bottom: 1px solid var(--line); padding-bottom: 22px; }
  }
  .miss { margin-top: 24px; background: var(--green-tint); border: 1px solid var(--green-soft); border-radius: 18px; padding: 22px 24px; }
  .miss h4 { font-size: 19px; margin-bottom: 8px; }
  .miss p { font-size: 15px; color: var(--body); }
  .miss .warn { margin-top: 12px; font-size: 14px; background: var(--orange-soft); border-left: 4px solid var(--orange); border-radius: 10px; padding: 12px 14px; color: var(--body); }
  .miss .warn b { color: var(--orange-dark); }

  /* ============ SEC 10 · final ============ */
  .final { background: linear-gradient(150deg, var(--orange) 0%, #ff9838 100%); color: #fff; text-align: center; overflow: hidden; }
  .final h2 { color: #fff; font-size: clamp(30px, 4.6vw, 48px); max-width: 780px; margin: 0 auto; }
  .final .fsub { color: rgba(255,255,255,0.95); font-size: 19px; margin-top: 16px; max-width: 640px; margin-left: auto; margin-right: auto; }
  .final .fchecks { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin: 30px auto 34px; max-width: 900px; }
  .final .fc { display: inline-flex; align-items: center; gap: 9px; padding: 9px 17px; border-radius: 999px; background: rgba(255,255,255,0.16); font-size: 15px; font-weight: 500; }
  .final .fc .tk { width: 22px; height: 22px; clip-path: var(--hex); background: #fff; color: var(--orange); display: flex; align-items: center; justify-content: center; }
  .final .fc .tk svg { width: 13px; height: 13px; }
  .btn-white { background: #fff; color: var(--orange-dark); box-shadow: 0 14px 30px rgba(0,0,0,0.18); }
  .btn-white:hover { background: #fff; transform: translateY(-2px); box-shadow: 0 18px 38px rgba(0,0,0,0.24); }

  /* ============ FOOTER ============ */
  footer { background: #fff; color: var(--body); padding: 44px 0 28px; border-top: 1px solid var(--line); }
  .foot-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
  .foot-logo { height: 38px; margin-bottom: 14px; }
  .foot-desc { font-size: 14.5px; max-width: 300px; color: var(--muted); }
  .support { text-align: right; }
  .support .k { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
  .support .admin { font-size: 15px; color: var(--body); margin-top: 4px; }
  .support .zalo { display: inline-flex; align-items: center; gap: 11px; margin-top: 12px; font-size: 20px; font-weight: 900; color: var(--ink-strong); }
  .support .zalo .ic { width: 42px; height: 42px; clip-path: var(--hex); background: var(--green); color: #fff; display: flex; align-items: center; justify-content: center; }
  .support .zalo .ic svg { width: 20px; height: 20px; }
  .foot-bottom { border-top: 1px solid var(--line); margin-top: 38px; padding-top: 22px; font-size: 13px; color: var(--muted); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

  /* ============ responsive ============ */
  @media (max-width: 960px) {
    section { padding: 48px 0; }
    .sec-head { margin-bottom: 36px; }
    .hero { padding: 40px 0 48px; }
    .hero-grid { grid-template-columns: 1fr; gap: 44px; }
    .hero-photo { max-width: 340px; }
    .grid-3, .grid-4, .proc, .info-grid { grid-template-columns: repeat(2,1fr); }
    .modules, .feat-list { grid-template-columns: 1fr; }
    .instructor { grid-template-columns: 1fr; gap: 32px; text-align: center; }
    .instructor .roles { align-items: flex-start; }
  }
  @media (max-width: 560px) {
    body { font-size: 16px; }
    .wrap { padding: 0 18px; }
    section { padding: 34px 0; }
    .sec-head { margin-bottom: 26px; }
    .hero { padding: 28px 0 34px; }
    .grid-3, .grid-4, .proc, .info-grid { grid-template-columns: 1fr; }
    .price-box { flex-direction: column; align-items: flex-start; }
    .checks { gap: 10px; }
    footer { padding: 36px 0 22px; }
  }