/* =========================================================================
   InnoSME Vietnam - Bộ thiết kế dùng chung cho website mẫu theo ngành

   Mỗi ngành chỉ khai báo bốn biến màu (--m-chinh, --m-phu, --m-nhan, --m-nen)
   trong phan/demo-nganh-dau.php là ra một website trông khác hẳn, còn bố cục
   và hành vi thì dùng chung ở đây. Nhờ vậy thêm một ngành mới chỉ tốn phần
   nội dung, không phải chép lại vài trăm dòng CSS.

   Mọi lớp đều nằm dưới .dn để không đụng tới giao diện chính của website.
   Bản quyền thuộc về InnoSME. Phần mềm thương mại.
   ========================================================================= */

.dn {
  --dn-chu: #14202B;
  --dn-chu-mo: #52626F;
  --dn-nen: #FFFFFF;
  --dn-nen-phu: #F4F7F9;
  --dn-vien: #DFE7EC;
  --dn-goc: 18px;
  --dn-goc-nho: 12px;
  color: var(--dn-chu);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16.5px;
  line-height: 1.75;
  background: var(--dn-nen);
}
.dn *, .dn *::before, .dn *::after { box-sizing: border-box; }
.dn h1, .dn h2, .dn h3, .dn h4 {
  /* Dấu tiếng Việt chồng lên chữ nên giãn dòng phải rộng hơn tiếng Anh,
     nếu không dấu của dòng dưới sẽ chạm chân dòng trên */
  margin: 0 0 14px; line-height: 1.28; letter-spacing: -.022em; font-weight: 800;
}
.dn h2 { font-size: clamp(26px, 3.4vw, 38px); }
.dn h3 { font-size: 19px; }
.dn p { margin: 0 0 14px; }
.dn a { color: var(--m-chinh); }
.dn ul { margin: 0; padding: 0; list-style: none; }
.dn img { max-width: 100%; height: auto; }

.dn-bao { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.dn-khoi { padding: 84px 0; }
.dn-khoi.phu { background: var(--dn-nen-phu); }
.dn-khoi.toi { background: var(--m-nen); color: #fff; }
.dn-khoi.toi h2, .dn-khoi.toi h3 { color: #fff; }
.dn-dau-khoi { max-width: 720px; margin: 0 auto 46px; text-align: center; }
.dn-dau-khoi p { color: var(--dn-chu-mo); font-size: 17px; margin: 0; }
.dn-khoi.toi .dn-dau-khoi p { color: rgba(255, 255, 255, .78); }
.dn-dau-khoi.trai { margin-left: 0; text-align: left; }

.dn-nhan {
  display: inline-block; margin-bottom: 14px; padding: 5px 14px; border-radius: 999px;
  font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  background: color-mix(in srgb, var(--m-chinh) 10%, transparent); color: var(--m-chinh);
}
.dn-khoi.toi .dn-nhan, .dn-nhan.sang { background: rgba(255, 255, 255, .13); color: #fff; }

/* --------------------------------------------------------------------- Nút */
.dn-nut {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; border: 1.5px solid transparent;
  font: inherit; font-size: 15px; font-weight: 600; cursor: pointer;
  text-decoration: none; transition: .18s; white-space: nowrap;
}
.dn .dn-nut.chinh { background: var(--m-chinh); color: #fff; }
.dn .dn-nut.chinh:hover { background: color-mix(in srgb, var(--m-chinh) 86%, #000); }
.dn .dn-nut.cam { background: var(--m-nhan); color: #2C1B00; }
.dn .dn-nut.cam:hover { filter: brightness(1.06); }
.dn .dn-nut.vien { background: transparent; color: var(--m-chinh); border-color: var(--dn-vien); }
.dn .dn-nut.vien:hover { border-color: var(--m-chinh); background: var(--dn-nen-phu); }
.dn .dn-nut.trang { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .32); }
.dn .dn-nut.trang:hover { background: rgba(255, 255, 255, .12); }
.dn .dn-nut.nho { padding: 9px 18px; font-size: 14px; }
.dn .dn-nut.rong { width: 100%; }

/* --------------------------------------------------------------- Đầu trang */
.dn-dinh {
  position: sticky; top: var(--inod-cao-thanh); z-index: 900;
  background: rgba(255, 255, 255, .94); backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent; transition: .2s;
}
.dn-dinh.da-cuon { border-bottom-color: var(--dn-vien); box-shadow: 0 6px 24px rgba(20, 32, 43, .07); }
.dn-dinh-trong { display: flex; align-items: center; gap: 26px; height: 72px; position: relative; }

.dn-logo { display: flex; align-items: center; gap: 11px; text-decoration: none; flex-shrink: 0; }
.dn-logo-o {
  width: 42px; height: 42px; border-radius: 13px; flex-shrink: 0;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--m-chinh), var(--m-phu));
  color: #fff; font-size: 19px; font-weight: 800;
}
.dn-logo b { display: block; font-size: 18px; font-weight: 800; color: var(--dn-chu); letter-spacing: -.02em; }
.dn-logo small { display: block; font-size: 11.5px; color: var(--dn-chu-mo); }

.dn-menu { display: flex; gap: 2px; margin-left: auto; }
.dn-menu a {
  display: block; padding: 9px 14px; border-radius: 999px; text-decoration: none;
  color: var(--dn-chu-mo); font-size: 15px; font-weight: 500; white-space: nowrap;
}
.dn-menu a:hover { background: var(--dn-nen-phu); color: var(--m-chinh); }

.dn-dinh-phai { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.dn-hotline { text-align: right; text-decoration: none; }
.dn-hotline small { display: block; font-size: 11px; color: var(--dn-chu-mo); }
.dn-hotline b { display: block; font-size: 16px; color: var(--m-chinh); font-weight: 800; }
.dn-nut-menu {
  display: none; width: 42px; height: 42px; border-radius: 12px; cursor: pointer;
  background: var(--dn-nen-phu); border: 1px solid var(--dn-vien); font-size: 19px;
}

/* ---------------------------------------------------------------- Trang bìa */
.dn-bia { position: relative; overflow: hidden; background: var(--m-nen); color: #fff; padding: 76px 0 88px; }
.dn-bia::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(720px 380px at 8% 0%, color-mix(in srgb, var(--m-chinh) 62%, transparent), transparent 62%),
    radial-gradient(560px 320px at 92% 100%, color-mix(in srgb, var(--m-nhan) 22%, transparent), transparent 62%);
}
.dn-bia > * { position: relative; }
.dn-bia-luoi { display: grid; grid-template-columns: minmax(0, 1.05fr) 420px; gap: 56px; align-items: center; }
.dn-bia h1 { font-size: clamp(32px, 4.6vw, 52px); line-height: 1.2; margin-bottom: 18px; }
.dn-bia-mo-ta { font-size: 17.5px; color: rgba(255, 255, 255, .82); max-width: 56ch; margin-bottom: 26px; }
.dn-bia-nhan {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px;
  padding: 6px 15px; border-radius: 999px; font-size: 13px; font-weight: 600;
  background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .2);
}
.dn-bia-nut { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 26px; }
.dn-bia-y { display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 14.5px; color: rgba(255, 255, 255, .8); }
.dn-bia-y span::before { content: "✓"; color: var(--m-nhan); font-weight: 800; margin-right: 7px; }

/* --------------------------------------------------- Ô biểu mẫu nổi trên bìa */
.dn-the-form {
  background: #fff; color: var(--dn-chu); border-radius: 22px; padding: 28px;
  box-shadow: 0 26px 60px rgba(8, 20, 28, .3);
}
.dn-the-form h3 { font-size: 20px; margin-bottom: 4px; }
.dn-the-form > p { font-size: 14px; color: var(--dn-chu-mo); margin-bottom: 18px; }

.dn-truong { margin-bottom: 13px; }
.dn-truong label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; }
.dn-truong input, .dn-truong select, .dn-truong textarea {
  width: 100%; padding: 12px 14px; border-radius: var(--dn-goc-nho);
  border: 1.5px solid var(--dn-vien); background: #fff; color: var(--dn-chu);
  font: inherit; font-size: 15px;
}
.dn-truong input:focus, .dn-truong select:focus, .dn-truong textarea:focus {
  outline: none; border-color: var(--m-chinh);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--m-chinh) 16%, transparent);
}
.dn-truong-doi { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.dn-bao-form {
  margin-top: 13px; padding: 12px 14px; border-radius: var(--dn-goc-nho); font-size: 14px;
  background: color-mix(in srgb, var(--m-phu) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--m-phu) 34%, transparent);
}
.dn-rieng-tu { font-size: 12.5px; color: var(--dn-chu-mo); margin: 12px 0 0; }

/* ----------------------------------------------------------------- Số liệu */
.dn-so-lieu {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  margin-top: -46px; position: relative; z-index: 5;
}
.dn-so-lieu > div {
  background: #fff; border: 1px solid var(--dn-vien); border-radius: var(--dn-goc);
  padding: 24px 20px; text-align: center; box-shadow: 0 10px 30px rgba(20, 32, 43, .06);
}
.dn-so-lieu b { display: block; font-size: 32px; font-weight: 800; color: var(--m-chinh); line-height: 1.2; }
.dn-so-lieu span { font-size: 14px; color: var(--dn-chu-mo); }

/* ------------------------------------------------------------------ Bộ lọc */
.dn-loc { display: flex; flex-wrap: wrap; gap: 9px; justify-content: center; margin-bottom: 34px; }
.dn-loc.trai { justify-content: flex-start; }
.dn-loc button {
  padding: 9px 19px; border-radius: 999px; cursor: pointer; font: inherit; font-size: 14.5px;
  font-weight: 600; background: #fff; color: var(--dn-chu-mo); border: 1.5px solid var(--dn-vien);
  transition: .16s;
}
.dn-loc button:hover { border-color: var(--m-chinh); color: var(--m-chinh); }
.dn-loc button.dang-chon { background: var(--m-chinh); border-color: var(--m-chinh); color: #fff; }

/* ------------------------------------------------- Thẻ danh mục (sản phẩm,
   dịch vụ, gói, khoá học, món ăn, căn hộ… tuỳ ngành) */
.dn-luoi { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 22px; }
.dn-luoi.rong { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

.dn-the {
  background: #fff; border: 1px solid var(--dn-vien); border-radius: var(--dn-goc);
  padding: 26px; display: flex; flex-direction: column; transition: .2s; position: relative;
}
.dn-the:hover { border-color: var(--m-chinh); box-shadow: 0 16px 40px rgba(20, 32, 43, .09); transform: translateY(-3px); }
.dn-the.noi-bat { border-color: color-mix(in srgb, var(--m-nhan) 55%, transparent); }
.dn-co {
  position: absolute; top: 18px; right: 18px; padding: 4px 11px; border-radius: 999px;
  font-size: 11px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase;
  background: var(--m-nhan); color: #2C1B00;
}
.dn-the-icon { font-size: 30px; margin-bottom: 12px; display: block; }
.dn-the h3 { margin-bottom: 8px; padding-right: 74px; }
.dn-the > p { font-size: 14.5px; color: var(--dn-chu-mo); margin-bottom: 16px; }

.dn-thong-so { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 18px; }
.dn-thong-so div { background: var(--dn-nen-phu); border-radius: var(--dn-goc-nho); padding: 10px 12px; }
.dn-thong-so small { display: block; font-size: 11.5px; color: var(--dn-chu-mo); }
.dn-thong-so b { font-size: 14px; font-weight: 700; }

.dn-the details { margin-bottom: 16px; }
.dn-the summary {
  cursor: pointer; font-size: 14px; font-weight: 600; color: var(--m-chinh);
  list-style: none; padding: 8px 0;
}
.dn-the summary::-webkit-details-marker { display: none; }
.dn-the summary::before { content: "▸ "; }
.dn-the details[open] summary::before { content: "▾ "; }

.dn-ds-cham li { font-size: 14px; color: var(--dn-chu-mo); padding: 6px 0 6px 22px; position: relative; }
.dn-ds-cham li::before { content: "•"; position: absolute; left: 6px; color: var(--m-phu); font-weight: 800; }
.dn-ds-tich li { font-size: 14px; color: var(--dn-chu-mo); padding: 6px 0 6px 24px; position: relative; }
.dn-ds-tich li::before { content: "✓"; position: absolute; left: 4px; color: var(--m-phu); font-weight: 800; }

.dn-the-chan {
  margin-top: auto; padding-top: 18px; border-top: 1px solid var(--dn-vien);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.dn-gia { font-size: 21px; font-weight: 800; color: var(--m-chinh); }
.dn-gia small { display: block; font-size: 11.5px; color: var(--dn-chu-mo); font-weight: 500; }

/* ------------------------------------------------------------- Quy trình */
.dn-quy-trinh { display: grid; grid-template-columns: repeat(var(--dn-cot, 5), 1fr); gap: 18px; }
.dn-buoc { position: relative; padding-top: 16px; }
.dn-buoc-so {
  width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center;
  background: var(--m-chinh); color: #fff; font-weight: 800; font-size: 16px; margin-bottom: 14px;
}
.dn-buoc h3 { font-size: 16.5px; }
.dn-buoc p { font-size: 14px; color: var(--dn-chu-mo); margin: 0; }
/* Đường nối bằng nét đứt giữa các bước, bước cuối thì bỏ */
.dn-buoc::after {
  content: ""; position: absolute; top: 39px; left: 58px; right: -18px; height: 2px;
  background: repeating-linear-gradient(90deg, var(--dn-vien) 0 7px, transparent 7px 14px);
}
.dn-buoc:last-child::after { display: none; }

/* ---------------------------------------------------------------- Bảng dữ liệu */
.dn-bang-bao { overflow-x: auto; border: 1px solid var(--dn-vien); border-radius: var(--dn-goc); background: #fff; }
.dn-bang { width: 100%; border-collapse: collapse; min-width: 760px; }
.dn-bang th {
  text-align: left; padding: 15px 18px; font-size: 12.5px; font-weight: 700;
  letter-spacing: .07em; text-transform: uppercase; color: var(--dn-chu-mo);
  background: var(--dn-nen-phu); border-bottom: 1px solid var(--dn-vien);
}
.dn-bang td { padding: 16px 18px; border-bottom: 1px solid var(--dn-vien); font-size: 14.5px; vertical-align: middle; }
.dn-bang tr:last-child td { border-bottom: none; }
.dn-bang tr:hover td { background: var(--dn-nen-phu); }
.dn-bang .chinh { font-weight: 600; color: var(--dn-chu); }

.dn-huy-hieu {
  display: inline-block; padding: 4px 11px; border-radius: 999px; font-size: 12.5px; font-weight: 700;
  background: color-mix(in srgb, var(--m-phu) 18%, transparent);
  color: color-mix(in srgb, var(--m-chinh) 82%, #000);
}
.dn-huy-hieu.canh { background: rgba(214, 69, 33, .12); color: #B23C1B; }
.dn-huy-hieu.tot { background: rgba(22, 148, 91, .13); color: #12734A; }
.dn-huy-hieu.cho { background: rgba(180, 130, 10, .14); color: #8A6408; }

/* ------------------------------------------------- Công cụ tính toán / báo giá */
.dn-tinh { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 34px; align-items: start; }
.dn-tinh-form { background: #fff; border: 1px solid var(--dn-vien); border-radius: var(--dn-goc); padding: 30px; }
.dn-chon-ds { display: flex; flex-direction: column; gap: 10px; }
.dn-chon-ds label {
  display: flex; align-items: center; gap: 11px; padding: 12px 14px; cursor: pointer;
  border: 1.5px solid var(--dn-vien); border-radius: var(--dn-goc-nho); font-size: 14.5px;
}
.dn-chon-ds label:hover { border-color: var(--m-chinh); }
.dn-chon-ds input { width: 17px; height: 17px; accent-color: var(--m-chinh); flex-shrink: 0; }
.dn-chon-ds .phu-chu { margin-left: auto; font-weight: 700; color: var(--m-chinh); white-space: nowrap; }

.dn-ket-qua {
  background: var(--m-nen); color: #fff; border-radius: var(--dn-goc); padding: 30px;
  position: sticky; top: calc(var(--inod-cao-thanh) + 92px);
}
.dn-ket-qua h3 { color: #fff; font-size: 17px; }
.dn-dong-tien {
  display: flex; justify-content: space-between; gap: 14px; padding: 11px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, .18); font-size: 14.5px;
  color: rgba(255, 255, 255, .78);
}
.dn-dong-tien b { color: #fff; font-weight: 600; white-space: nowrap; text-align: right; }
.dn-tong { padding-top: 18px; margin-top: 8px; }
.dn-tong small { display: block; font-size: 13px; color: rgba(255, 255, 255, .7); }
.dn-tong b { display: block; font-size: 33px; font-weight: 800; color: var(--m-nhan); line-height: 1.25; }
.dn-ghi-chu-tinh { font-size: 13.5px; color: var(--m-phu); margin-top: 6px; }

/* ------------------------------------------------------------------- Người */
.dn-luoi-nguoi { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.dn-the-nguoi {
  background: #fff; border: 1px solid var(--dn-vien); border-radius: var(--dn-goc); padding: 24px;
  display: flex; gap: 16px; align-items: flex-start;
}
.dn-anh {
  width: 58px; height: 58px; border-radius: 50%; flex-shrink: 0; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--m-chinh), var(--m-phu));
  color: #fff; font-weight: 800; font-size: 19px;
}
.dn-anh.nho { width: 42px; height: 42px; font-size: 15px; }
.dn-the-nguoi h3 { font-size: 17px; margin-bottom: 2px; }
.dn-the-nguoi .chuc { font-size: 13.5px; color: var(--m-chinh); font-weight: 600; margin-bottom: 9px; }
.dn-the-nguoi p { font-size: 13.5px; color: var(--dn-chu-mo); margin: 0 0 4px; }

/* --------------------------------------------------------- Thẻ đơn giản 4 ô */
.dn-luoi-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.dn-luoi-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.dn-the-don { background: #fff; border: 1px solid var(--dn-vien); border-radius: var(--dn-goc); padding: 26px; }
.dn-khoi.toi .dn-the-don {
  background: rgba(255, 255, 255, .06); border-color: rgba(255, 255, 255, .13); color: #fff;
}
.dn-the-don .icon { font-size: 30px; margin-bottom: 12px; display: block; }
.dn-the-don h3 { font-size: 17px; }
.dn-the-don p { font-size: 14px; color: var(--dn-chu-mo); margin: 0; }
.dn-khoi.toi .dn-the-don p { color: rgba(255, 255, 255, .74); }

/* ---------------------------------------------------------------- Cảm nhận */
.dn-the-cn {
  background: #fff; border: 1px solid var(--dn-vien); border-radius: var(--dn-goc); padding: 28px;
  display: flex; flex-direction: column;
}
.dn-sao { color: var(--m-nhan); font-size: 15px; letter-spacing: 2px; margin-bottom: 12px; }
.dn-the-cn blockquote { margin: 0 0 18px; font-size: 15px; line-height: 1.8; }
.dn-cn-ai { margin-top: auto; display: flex; align-items: center; gap: 12px; }
.dn-cn-ai b { display: block; font-size: 14.5px; }
.dn-cn-ai small { display: block; font-size: 13px; color: var(--dn-chu-mo); }

/* ----------------------------------------------------------------- Tin tức */
.dn-the-tin {
  background: #fff; border: 1px solid var(--dn-vien); border-radius: var(--dn-goc);
  padding: 26px; display: flex; flex-direction: column; text-decoration: none; color: inherit;
  transition: .2s;
}
.dn-the-tin:hover { border-color: var(--m-chinh); transform: translateY(-3px); text-decoration: none; }
.dn-tin-meta { display: flex; gap: 12px; align-items: center; font-size: 12.5px; color: var(--dn-chu-mo); margin-bottom: 12px; }
.dn-tin-cm {
  padding: 3px 10px; border-radius: 999px; font-weight: 700; font-size: 11.5px;
  background: color-mix(in srgb, var(--m-chinh) 10%, transparent); color: var(--m-chinh);
}
.dn-the-tin h3 { font-size: 17.5px; }
.dn-the-tin p { font-size: 14px; color: var(--dn-chu-mo); margin: 0; }

/* --------------------------------------------------------------------- FAQ */
.dn-faq { max-width: 820px; margin: 0 auto; }
.dn-faq details {
  background: #fff; border: 1px solid var(--dn-vien); border-radius: var(--dn-goc-nho);
  margin-bottom: 11px; overflow: hidden;
}
.dn-faq summary {
  cursor: pointer; padding: 19px 22px; font-weight: 600; font-size: 16px;
  list-style: none; display: flex; justify-content: space-between; gap: 16px;
}
.dn-faq summary::-webkit-details-marker { display: none; }
.dn-faq summary::after { content: "+"; color: var(--m-chinh); font-size: 21px; line-height: 1; flex-shrink: 0; }
.dn-faq details[open] summary::after { content: "−"; }
.dn-faq .dap { padding: 0 22px 20px; color: var(--dn-chu-mo); font-size: 15px; margin: 0; }

/* ----------------------------------------------------------------- Liên hệ */
.dn-lh { background: var(--m-nen); color: #fff; }
.dn-lh h2 { color: #fff; }
.dn-lh-luoi { display: grid; grid-template-columns: minmax(0, 1fr) 440px; gap: 52px; align-items: start; }
.dn-lh-mo-ta { color: rgba(255, 255, 255, .8); font-size: 16.5px; margin-bottom: 28px; max-width: 52ch; }
.dn-diem { display: flex; flex-direction: column; gap: 14px; }
.dn-diem > div {
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--dn-goc-nho); padding: 16px 18px;
}
.dn-diem b { display: block; font-size: 15px; margin-bottom: 3px; }
.dn-diem span { font-size: 14px; color: rgba(255, 255, 255, .72); }

/* -------------------------------------------------------------- Chân trang */
.dn-chan { background: color-mix(in srgb, var(--m-nen) 82%, #000); color: rgba(255, 255, 255, .68); padding: 54px 0 26px; font-size: 14.5px; }
.dn-chan-luoi { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.dn-chan h4 { color: #fff; font-size: 13px; letter-spacing: .07em; text-transform: uppercase; margin-bottom: 16px; }
.dn-chan a { color: rgba(255, 255, 255, .68); text-decoration: none; }
.dn-chan a:hover { color: #fff; }
.dn-chan li { margin-bottom: 9px; }
.dn-chan .dn-logo b { color: #fff; }
.dn-chan .dn-logo small { color: rgba(255, 255, 255, .6); }
.dn-chan-cuoi {
  margin-top: 40px; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .1);
  font-size: 13px; text-align: center;
}

/* --------------------------------------------------- Hiện dần khi cuộn tới */
.dn .inod-hien-dan { opacity: 0; transform: translateY(16px); transition: opacity .5s, transform .5s; }
.dn .inod-hien-dan.da-hien { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .dn .inod-hien-dan { opacity: 1; transform: none; transition: none; }
}

/* ------------------------------------------------------------ Màn hình nhỏ */
@media (max-width: 1020px) {
  .dn-bia-luoi, .dn-tinh, .dn-lh-luoi { grid-template-columns: 1fr; }
  .dn-quy-trinh { grid-template-columns: repeat(2, 1fr); }
  .dn-buoc::after { display: none; }
  .dn-luoi-4 { grid-template-columns: repeat(2, 1fr); }
  .dn-luoi-3 { grid-template-columns: 1fr; }
  .dn-so-lieu { grid-template-columns: repeat(2, 1fr); }
  .dn-chan-luoi { grid-template-columns: 1fr 1fr; }
  .dn-ket-qua { position: static; }
}
@media (max-width: 820px) {
  .dn-khoi { padding: 60px 0; }
  .dn-nut-menu { display: block; }
  .dn-menu {
    display: none; position: absolute; left: 0; right: 0; top: 72px;
    background: #fff; border: 1px solid var(--dn-vien); border-radius: var(--dn-goc);
    flex-direction: column; padding: 10px; box-shadow: 0 20px 50px rgba(20, 32, 43, .16);
  }
  .dn-menu.mo { display: flex; }
  .dn-hotline { display: none; }
  .dn-quy-trinh, .dn-luoi-4, .dn-so-lieu, .dn-truong-doi { grid-template-columns: 1fr; }
  .dn-chan-luoi { grid-template-columns: 1fr; gap: 28px; }
}