/* ============================================================
   THẨM MỸ SEN NINH BÌNH — khu /dao-tao/xay-kenh
   Giao diện riêng cho khu này, KHÔNG dùng chung với style.css.
   Mọi kiểu dáng nằm trong .xk để không đụng vào giao diện site
   (thanh đầu và chân trang vẫn ăn theo main.js).
   ============================================================ */

.xk {
  --giay:      #F4F1EA;
  --mat:       #FBFAF6;
  --mat-2:     #E7E2D6;
  --muc:       #0A2540;
  --muc-2:     #3D5570;
  --muc-3:     #77879A;
  --vang:      #C9A24B;
  --vang-dam:  #96702A;
  --vang-nhat: #F7EFDD;
  --ke:        #CFC9B9;
  --ke-nhat:   #E2DDCF;
  --do:        #B4232B;

  --chu-to: "Archivo", "Be Vietnam Pro", system-ui, sans-serif;
  --chu-thuong: "Be Vietnam Pro", system-ui, -apple-system, sans-serif;

  --rong-chu: 64ch;
  --le: clamp(1.25rem, 5vw, 3.5rem);
  --cao-thanh-dau: 76px;

  background: var(--giay);
  color: var(--muc);
  font-family: var(--chu-thuong);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.68;
  display: block;
}

.xk section { padding: 0; }

.xk .xk-khung {
  max-width: 54rem;
  margin: 0 auto;
  padding: var(--le) var(--le) 4.5rem;
}

/* ---------- chữ ---------- */

.xk .nhan {
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 112, "wght" 700;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--vang-dam);
  margin: 0;
  line-height: 1.5;
}

.xk h1 {
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 118, "wght" 900;
  font-size: clamp(2.4rem, 1.4rem + 6vw, 5rem);
  line-height: 0.92;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  text-wrap: balance;
  color: var(--muc);
  margin: 0.45em 0 0;
  text-shadow: 0.055em 0.055em 0 var(--vang);
}

.xk h2 {
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 112, "wght" 800;
  font-size: clamp(1.45rem, 1.1rem + 1.8vw, 2.1rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  text-wrap: balance;
  color: var(--muc);
  margin: 0;
}

.xk h3 {
  font-family: var(--chu-thuong);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.4;
  color: var(--muc);
  margin: 0 0 0.35rem;
  text-wrap: balance;
}

.xk p { margin: 0 0 0.9rem; max-width: var(--rong-chu); }
.xk p:last-child { margin-bottom: 0; }
.xk strong { color: inherit; font-weight: 700; }
.xk em { font-style: italic; color: var(--muc-2); }
.xk a { color: var(--vang-dam); }

/* ---------- đầu trang ---------- */

.xk .xk-crumb {
  font-size: 0.85rem;
  color: var(--muc-3);
  margin: 0 0 1.6rem;
}
.xk .xk-crumb a { color: var(--muc-2); text-decoration: none; }
.xk .xk-crumb a:hover { color: var(--vang-dam); }

.xk .xk-dau {
  border-bottom: 3px solid var(--muc);
  padding-bottom: 2rem;
  margin-bottom: 2.5rem;
}

.xk .xk-dan {
  font-size: clamp(1.05rem, 0.98rem + 0.4vw, 1.2rem);
  line-height: 1.55;
  color: var(--muc-2);
  font-weight: 500;
  max-width: 42ch;
  margin: 1.6rem 0 0;
}

.xk .xk-the-hang {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.6rem;
}

.xk .xk-the {
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 108, "wght" 700;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
  border: 1.5px solid var(--ke);
  color: var(--muc-2);
}

/* ---------- thanh điều hướng trong khu ---------- */

.xk .xk-tab {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border: 2px solid var(--muc);
  margin-bottom: 2.5rem;
}

.xk .xk-tab a {
  flex: 1 1 8rem;
  text-align: center;
  padding: 0.7rem 0.6rem;
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 105, "wght" 700;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muc-2);
  text-decoration: none;
  border-right: 1.5px solid var(--ke);
  transition: background 0.15s, color 0.15s;
}
.xk .xk-tab a:last-child { border-right: 0; }
.xk .xk-tab a:hover { background: var(--vang-nhat); color: var(--muc); }
.xk .xk-tab a[aria-current="page"] { background: var(--muc); color: #fff; }

/* ---------- thanh tiến độ ---------- */

.xk .xk-tien-do {
  position: sticky;
  top: var(--cao-thanh-dau);
  z-index: 20;
  background: var(--giay);
  border-bottom: 1.5px solid var(--ke);
  padding: 0.7rem 0;
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.xk .xk-tien-do-nhan {
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 105, "wght" 700;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muc-3);
  white-space: nowrap;
}

.xk .xk-duong { flex: 1; height: 6px; background: var(--mat-2); overflow: hidden; }
.xk .xk-day { height: 100%; width: 0%; background: var(--vang); transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1); }

.xk .xk-dem {
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 100, "wght" 800;
  font-variant-numeric: tabular-nums;
  font-size: 0.95rem;
  color: var(--muc);
  white-space: nowrap;
}

/* ---------- khối đánh số (3 điều / thẻ) ---------- */

.xk .xk-luat {
  background: var(--mat);
  border: 2px solid var(--muc);
  padding: clamp(1.25rem, 3vw, 2rem);
  margin-bottom: 3.5rem;
}

.xk .xk-luat-tieu-de {
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 110, "wght" 800;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 1.25rem;
  max-width: none;
}

.xk .xk-luat-muc {
  display: grid;
  grid-template-columns: 1.6rem 1fr;
  gap: 0.75rem;
  padding: 1rem 0;
  border-top: 1px solid var(--ke-nhat);
}
.xk .xk-luat-muc:first-of-type { border-top: 0; padding-top: 0; }
.xk .xk-luat-muc:last-of-type { padding-bottom: 0; }

.xk .xk-luat-so {
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 100, "wght" 900;
  font-size: 1.1rem;
  line-height: 1.45;
  color: var(--vang-dam);
  font-variant-numeric: tabular-nums;
}

/* ---------- thẻ dẫn sang trang khác ---------- */

.xk .xk-the-lon {
  display: block;
  background: var(--mat);
  border: 2px solid var(--muc);
  padding: clamp(1.25rem, 3vw, 1.9rem);
  margin-bottom: 1.25rem;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, box-shadow 0.15s;
}
.xk .xk-the-lon:hover { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--vang); }
.xk .xk-the-lon:focus-visible { outline: 3px solid var(--vang-dam); outline-offset: 3px; }
.xk .xk-the-lon h2 { margin: 0.35rem 0 0.7rem; }
.xk .xk-the-lon p { color: var(--muc-2); }
.xk .xk-the-lon .xk-di {
  display: inline-block;
  margin-top: 1rem;
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 105, "wght" 800;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--vang-dam);
}

/* ---------- tuần ---------- */

.xk .xk-tuan { margin-bottom: 3.5rem; }

.xk .xk-tuan-dau {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  padding-bottom: 0.9rem;
  border-bottom: 3px solid var(--muc);
  margin-bottom: 0.5rem;
}

.xk .xk-tuan-dau h2 { text-shadow: 0.04em 0.04em 0 var(--vang); }

.xk .xk-tuan-ngay {
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 105, "wght" 700;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muc-3);
  margin-left: auto;
  font-variant-numeric: tabular-nums;
}

.xk .xk-tuan-dan {
  color: var(--muc-2);
  font-weight: 500;
  padding: 1rem 0 0.25rem;
}

/* ---------- từng ngày ---------- */

.xk .xk-ngay {
  display: grid;
  grid-template-columns: 3.6rem 1fr;
  gap: 0 1.1rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--ke-nhat);
  align-items: start;
}

.xk .xk-nut-ngay {
  grid-row: span 2;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 2px solid var(--ke);
  color: var(--muc-3);
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 100, "wght" 900;
  font-variant-numeric: tabular-nums;
  font-size: 1.35rem;
  line-height: 1;
  padding: 0.55rem 0;
  width: 3.6rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.xk .xk-nut-ngay:hover { border-color: var(--vang-dam); color: var(--vang-dam); }
.xk .xk-nut-ngay:focus-visible { outline: 3px solid var(--vang-dam); outline-offset: 3px; }

.xk .xk-nut-ngay[aria-pressed="true"] {
  background: var(--muc);
  border-color: var(--muc);
  color: #fff;
}

.xk .xk-ngay[data-xong="true"] .xk-viec { opacity: 0.42; }
.xk .xk-ngay[data-xong="true"] h3 { text-decoration: line-through; text-decoration-thickness: 2px; }

.xk .xk-viec { transition: opacity 0.2s; }
.xk .xk-viec p { font-size: 0.97rem; color: var(--muc-2); }

/* ---------- mục sai lầm ---------- */

.xk .xk-loi {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: 0 1.1rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--ke-nhat);
  align-items: start;
}

.xk .xk-loi-so {
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 100, "wght" 900;
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--vang);
  padding-top: 0.15rem;
}

.xk .xk-loi h3 { font-size: 1.08rem; margin-bottom: 0.5rem; }
.xk .xk-loi p { font-size: 0.97rem; color: var(--muc-2); }

.xk .xk-chot {
  border-left: 4px solid var(--vang);
  padding: 0.15rem 0 0.15rem 0.9rem;
  margin-top: 0.85rem;
  font-weight: 600;
  color: var(--muc);
}
.xk .xk-chot p { color: var(--muc); font-weight: 600; margin: 0; }

/* ---------- cảnh báo / lằn ranh ---------- */

.xk .xk-canh-bao {
  border-left: 4px solid var(--vang);
  background: var(--vang-nhat);
  padding: 1rem 1.25rem;
  margin-top: 1.5rem;
}
.xk .xk-canh-bao p { font-size: 0.95rem; margin: 0; max-width: none; color: var(--muc); }
.xk .xk-canh-bao strong { color: var(--vang-dam); }

.xk .xk-cam {
  border: 2px solid var(--do);
  background: #FFF5F5;
  padding: clamp(1.1rem, 3vw, 1.7rem);
  margin: 2.5rem 0;
}
.xk .xk-cam h2 { color: var(--do); font-size: clamp(1.2rem, 1rem + 1vw, 1.5rem); }
.xk .xk-cam ul { list-style: none; margin: 1rem 0 0; padding: 0; }
.xk .xk-cam li {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: 0.6rem;
  font-size: 0.97rem;
  color: var(--muc);
}
.xk .xk-cam li::before {
  content: "✕";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--do);
  font-weight: 700;
}

/* ---------- khuôn content ---------- */

.xk .xk-khuon {
  border: 2px solid var(--muc);
  background: var(--mat);
  margin-bottom: 1.5rem;
}

.xk .xk-khuon-dau {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.4rem 0.8rem;
  padding: 1rem 1.2rem;
  border-bottom: 1.5px solid var(--ke-nhat);
}
.xk .xk-khuon-so {
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 100, "wght" 900;
  font-variant-numeric: tabular-nums;
  font-size: 1.15rem;
  color: var(--vang-dam);
}
.xk .xk-khuon-dau h3 { margin: 0; font-size: 1.05rem; }
.xk .xk-khuon-dung {
  margin-left: auto;
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 105, "wght" 700;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muc-3);
}

.xk .xk-mau {
  margin: 0;
  padding: 1.2rem;
  font-family: var(--chu-thuong);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--muc);
  white-space: pre-wrap;
  word-wrap: break-word;
  background: #fff;
  border-bottom: 1.5px solid var(--ke-nhat);
}
.xk .xk-mau b { color: var(--vang-dam); }

.xk .xk-khuon-chan {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.2rem;
}

.xk .xk-nut-chep {
  appearance: none;
  border: 2px solid var(--muc);
  background: var(--muc);
  color: #fff;
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 105, "wght" 800;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.6rem 1.1rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.xk .xk-nut-chep:hover { background: transparent; color: var(--muc); }
.xk .xk-nut-chep:focus-visible { outline: 3px solid var(--vang-dam); outline-offset: 3px; }
.xk .xk-nut-chep[data-xong="true"] { background: var(--vang-dam); border-color: var(--vang-dam); color: #fff; }

.xk .xk-goi-y { font-size: 0.88rem; color: var(--muc-3); margin: 0; max-width: none; }

/* ---------- kết ---------- */

.xk .xk-ket {
  border-top: 3px solid var(--muc);
  padding-top: 2rem;
  margin-top: 3rem;
}

.xk .xk-cau-lon {
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 110, "wght" 800;
  font-size: clamp(1.2rem, 0.9rem + 1.6vw, 1.85rem);
  line-height: 1.15;
  text-transform: uppercase;
  color: var(--muc);
  text-wrap: balance;
  margin: 2.5rem 0 0;
  max-width: none;
  border-top: 3px solid var(--muc);
  padding-top: 1.5rem;
}

/* ---------- khối liên hệ cuối ---------- */

.xk .xk-chan {
  background: var(--muc);
  color: #E9EFF5;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: 3.5rem;
}
.xk .xk-chan h2 { color: #fff; text-shadow: 0.04em 0.04em 0 var(--vang); }
.xk .xk-chan .nhan { color: var(--vang); }
.xk .xk-chan p { color: #C3D2DF; margin-top: 1rem; }
.xk .xk-chan strong { color: #fff; }

.xk .xk-chan-nut {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.xk .xk-nut {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  font-family: var(--chu-to);
  font-variation-settings: "wdth" 105, "wght" 800;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid var(--vang);
  background: var(--vang);
  color: var(--muc);
  transition: background 0.15s, color 0.15s;
}
.xk .xk-nut:hover { background: transparent; color: var(--vang); }
.xk .xk-nut.vien { background: transparent; color: #E9EFF5; border-color: rgba(255, 255, 255, 0.45); }
.xk .xk-nut.vien:hover { background: #fff; color: var(--muc); border-color: #fff; }
.xk .xk-nut:focus-visible { outline: 3px solid var(--vang); outline-offset: 3px; }

/* ---------- điện thoại ---------- */

@media (max-width: 560px) {
  .xk .xk-ngay { grid-template-columns: 3rem 1fr; gap: 0 0.85rem; }
  .xk .xk-nut-ngay { width: 3rem; font-size: 1.15rem; }
  .xk .xk-loi { grid-template-columns: 2.6rem 1fr; gap: 0 0.85rem; }
  .xk .xk-loi-so { font-size: 1.25rem; }
  .xk .xk-tab a { flex: 1 1 45%; }
}

@media (prefers-reduced-motion: reduce) {
  .xk * { transition: none !important; }
}

/* ---------- lưới 20 ngành hàng ---------- */
.xk .xk-luoi { display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: 0.9rem; margin: 1.5rem 0 3rem; }
.xk .xk-o { display: block; border: 2px solid var(--muc); background: var(--mat); padding: 1rem 1.1rem; text-decoration: none; color: inherit; transition: transform 0.15s, box-shadow 0.15s; }
.xk .xk-o:hover { transform: translate(-3px, -3px); box-shadow: 5px 5px 0 var(--vang); }
.xk .xk-o:focus-visible { outline: 3px solid var(--vang-dam); outline-offset: 3px; }
.xk .xk-o-so { font-family: var(--chu-to); font-variation-settings: "wdth" 100, "wght" 900; font-variant-numeric: tabular-nums; font-size: 0.8rem; letter-spacing: 0.08em; color: var(--vang-dam); display: block; margin-bottom: 0.2rem; }
.xk .xk-o h3 { font-family: var(--chu-to); font-variation-settings: "wdth" 108, "wght" 800; font-size: 1rem; line-height: 1.15; text-transform: uppercase; margin: 0 0 0.4rem; }
.xk .xk-o p { font-size: 0.87rem; line-height: 1.5; color: var(--muc-2); margin: 0; max-width: none; }
.xk .xk-o .xk-o-canh { display: inline-block; margin-top: 0.6rem; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--do); }
.xk .xk-nut-chep[data-xong="hong"] { background: var(--do); border-color: var(--do); color: #fff; font-size: 0.68rem; }

/* ô ngành chưa soạn xong */
.xk .xk-o-cho { border-style: dashed; border-color: var(--ke); background: transparent; cursor: default; }
.xk .xk-o-cho:hover { transform: none; box-shadow: none; }
.xk .xk-o-cho h3, .xk .xk-o-cho .xk-o-so { color: var(--muc-3); }
.xk .xk-o-cho p { color: var(--muc-3); }
.xk .xk-o-cho-nhan { display: inline-block; margin-top: 0.6rem; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muc-3); }