/* Trang chủ + trang đăng ký Zoom ankahuyentrinh.com (10/11/2026). Cùng màu với app Anka.
   Tiêu đề dùng Be Vietnam Pro đậm, KHÔNG dùng Oswald (Oswald vẽ sai chữ Ừ, Ớ in hoa). */
:root { --red:#C8102E; --dred:#7A0A1C; --ink:#1F1F1F; --mute:#5F5F5F; --line:#ECECEC; --bg:#FFF8F2; --tint:#FCEBEE; --yel:#FFD400; --green:#1E7B4A; }
* { box-sizing:border-box; margin:0; padding:0; }
[hidden] { display:none !important; }
html { scroll-behavior:smooth; }
body { font-family:"Be Vietnam Pro", "Segoe UI", Arial, sans-serif; color:var(--ink); background:var(--bg); font-size:17px; line-height:1.6; }
img { max-width:100%; display:block; }
a { color:var(--red); }
.wrap { max-width:980px; margin:0 auto; padding:0 16px; }
h1, h2, h3 { line-height:1.2; font-weight:800; }
h1 { font-size:clamp(30px, 6vw, 50px); text-transform:uppercase; }
h2 { font-size:clamp(24px, 4.5vw, 34px); text-transform:uppercase; text-align:center; margin-bottom:22px; }
h2 em { font-style:normal; color:var(--red); }
section { padding:44px 0; }
.muted { color:var(--mute); }

/* Thanh trên */
.top { background:#fff; border-bottom:1px solid var(--line); position:sticky; top:0; z-index:5; }
.top .wrap { display:flex; align-items:center; justify-content:space-between; gap:12px; height:62px; }
.logo { display:flex; align-items:center; gap:10px; text-decoration:none; color:inherit; }
.logo img { width:38px; height:38px; border-radius:11px; }
.logo b { font-size:22px; color:var(--red); letter-spacing:.5px; }
.logo small { display:block; font-size:11px; color:var(--mute); margin-top:-4px; }

/* Nút */
.btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; background:var(--red); color:#fff; border:none; border-radius:12px; padding:15px 26px; font:700 17px/1.2 inherit; font-family:inherit; cursor:pointer; text-decoration:none; box-shadow:0 6px 16px rgba(200,16,46,.25); }
.btn.vang { background:var(--yel); color:var(--ink); box-shadow:0 6px 16px rgba(0,0,0,.15); }
.btn.nho { padding:10px 16px; font-size:15px; box-shadow:none; }
.btn.ghost { background:#fff; color:var(--ink); border:1px solid #D8D8D8; box-shadow:none; }
.btn:disabled { opacity:.6; cursor:wait; }

/* Đầu trang */
.hero { background:linear-gradient(160deg, #D8142F 0%, #9E0C24 65%, #6A0714 100%); color:#fff; padding:40px 0 48px; }
.hero .wrap { display:grid; grid-template-columns:1.25fr .75fr; gap:28px; align-items:center; }
.hero .nhan { display:inline-block; background:var(--yel); color:var(--ink); font-weight:800; border-radius:8px; padding:5px 12px; font-size:15px; margin-bottom:14px; text-transform:uppercase; }
.hero h1 { margin-bottom:6px; }
.hero .phu { font-size:clamp(18px, 3.4vw, 23px); font-weight:700; color:#FFE9A8; margin-bottom:14px; }
.hero p { font-size:18px; margin-bottom:20px; opacity:.95; }
.hero .anh { border-radius:20px; overflow:hidden; border:4px solid rgba(255,255,255,.85); background:#fff; }
.hero .chot { display:flex; flex-wrap:wrap; gap:8px 16px; margin-top:14px; font-size:15px; opacity:.9; }

/* Thẻ */
.the { background:#fff; border-radius:16px; padding:20px; box-shadow:0 2px 12px rgba(0,0,0,.06); }
.luoi2 { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.luoi3 { display:grid; grid-template-columns:repeat(3, 1fr); gap:16px; }
.ds { list-style:none; display:flex; flex-direction:column; gap:10px; }
.ds li { display:flex; gap:10px; align-items:flex-start; }
.ds li i { font-style:normal; flex:none; width:26px; height:26px; border-radius:50%; display:grid; place-items:center; font-size:14px; font-weight:800; margin-top:2px; }
.ds.dau li i { background:var(--tint); color:var(--red); }
.ds.duoc li i { background:#E3F4EA; color:var(--green); }
.nen-trang { background:#fff; }

/* Lịch buổi học */
.buoi { display:flex; flex-direction:column; gap:14px; }
.buoi .the { display:grid; grid-template-columns:92px 1fr; gap:16px; align-items:start; }
.buoi .so { background:var(--red); color:#fff; border-radius:12px; text-align:center; padding:10px 6px; font-weight:800; line-height:1.15; }
.buoi .so small { display:block; font-size:12px; font-weight:600; opacity:.9; }
.buoi .so b { font-size:30px; }
.buoi h3 { font-size:20px; margin-bottom:6px; text-transform:uppercase; }
.buoi ul { padding-left:20px; }
.gan-nhat { background:var(--yel); border-radius:12px; padding:12px 16px; font-weight:700; text-align:center; margin-bottom:16px; }

/* Người dạy */
.nguoi { display:grid; grid-template-columns:260px 1fr; gap:24px; align-items:center; }
.nguoi img { border-radius:18px; }
.nguoi h3 { font-size:26px; text-transform:uppercase; }
.nguoi .chuc { color:var(--red); font-weight:700; margin-bottom:10px; }

/* Ô đăng ký */
.dk { background:linear-gradient(160deg, #D8142F 0%, #9E0C24 100%); }
.dk h2 { color:#fff; }
.dk .the { max-width:520px; margin:0 auto; display:flex; flex-direction:column; gap:12px; }
.dk label { font-weight:700; font-size:15px; }
.dk input { font:inherit; font-size:18px; padding:14px; border:1.5px solid #D8D8D8; border-radius:12px; width:100%; }
.dk input:focus { outline:none; border-color:var(--red); }
.dk .bay { position:absolute; left:-5000px; }
.dk .loi { background:var(--tint); color:var(--red); border-radius:10px; padding:10px 12px; font-size:15px; }
.dk .xong { text-align:center; display:flex; flex-direction:column; gap:10px; align-items:center; }
.dk .xong .tick { width:64px; height:64px; border-radius:50%; background:#E3F4EA; color:var(--green); font-size:34px; display:grid; place-items:center; }
.dk .mien-phi { text-align:center; color:var(--green); font-weight:800; font-size:20px; }

/* Hỏi đáp */
.hoi details { background:#fff; border-radius:14px; padding:16px 18px; margin-bottom:10px; box-shadow:0 2px 10px rgba(0,0,0,.05); }
.hoi summary { font-weight:700; cursor:pointer; }
.hoi details p { margin-top:8px; }

/* Trang chủ: thẻ khóa */
.khoa { display:flex; flex-direction:column; gap:10px; }
.khoa .ten { font-size:21px; font-weight:800; text-transform:uppercase; color:var(--red); line-height:1.2; }
.khoa .ten-nho { font-weight:700; }
.khoa .btn { margin-top:auto; }
.app-anka { display:grid; grid-template-columns:1fr 280px; gap:24px; align-items:center; }
.app-anka img { border-radius:18px; box-shadow:0 8px 24px rgba(0,0,0,.12); max-height:520px; object-fit:cover; object-position:top; }

/* Chân trang */
footer { background:#1F1F1F; color:#CFCFCF; padding:30px 0 90px; font-size:14px; }
footer a { color:#fff; }
footer .wrap { display:flex; flex-direction:column; gap:6px; }

/* Nút dính dưới màn điện thoại */
.dinh { position:fixed; left:0; right:0; bottom:0; padding:10px 16px; background:rgba(255,255,255,.96); border-top:1px solid var(--line); z-index:6; display:none; }
.dinh .btn { width:100%; }

@media (max-width:760px) {
  body { font-size:16px; }
  section { padding:34px 0; }
  .hero .wrap, .luoi2, .luoi3, .nguoi, .app-anka { grid-template-columns:1fr; }
  .hero .anh { max-width:260px; margin:0 auto; }
  .nguoi img { max-width:240px; margin:0 auto; }
  .app-anka img { max-width:260px; margin:0 auto; }
  .buoi .the { grid-template-columns:70px 1fr; gap:12px; }
  .buoi .so b { font-size:24px; }
  .dinh { display:block; }
}

/* Bản có cảm xúc (10/11 chiều): câu chuyện + con số */
.hero h1 { font-size:clamp(30px, 5.4vw, 48px); }
.hero .hoi { font-size:clamp(19px, 3.6vw, 24px); font-weight:700; color:#FFE9A8; margin-bottom:12px; }
.chuyen { display:grid; grid-template-columns:.8fr 1.2fr; gap:28px; align-items:start; }
.chuyen .anh-chuyen img { border-radius:18px; box-shadow:0 8px 24px rgba(0,0,0,.12); }
.chuyen .loi p { margin-bottom:14px; font-size:18px; }
.chuyen .loi p.trich { font-size:21px; font-weight:700; color:var(--red); border-left:5px solid var(--yel); padding-left:14px; }
.so4 { display:grid; grid-template-columns:repeat(4, 1fr); gap:12px; margin-top:26px; }
.so4 div { background:#fff; border-radius:14px; padding:16px 12px; text-align:center; box-shadow:0 2px 10px rgba(0,0,0,.06); }
.so4 b { display:block; font-size:28px; color:var(--red); line-height:1.1; font-weight:800; }
.so4 small { font-size:14px; color:var(--mute); }
.nhan-nhu { background:var(--tint); }
.camxuc { list-style:none; display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.camxuc li { background:#fff; border-radius:14px; padding:16px 18px; font-size:17px; box-shadow:0 2px 10px rgba(0,0,0,.05); }
.camxuc li b { color:var(--red); }
.ket { text-align:center; }
.ket p { font-size:20px; max-width:700px; margin:0 auto 20px; }
@media (max-width:760px) {
  .chuyen, .camxuc { grid-template-columns:1fr; }
  .so4 { grid-template-columns:1fr 1fr; }
  .chuyen .anh-chuyen img { max-width:300px; margin:0 auto; }
}