/* ============================================================
   BẢO CHÂU — LANDING PAGE
   css/styles.css
   Thứ tự: tokens → nền chung → thành phần dùng lại → từng khối
   Ngưỡng mobile duy nhất: max-width 760px
   ============================================================ */

/* ---------- 1. DESIGN TOKENS ---------- */
:root{
  --bg-gradient-start:#F0F8FD;
  --bg-gradient-end:#D6EBFA;
  --heading-gradient-start:#1E6FB5;
  --heading-gradient-end:#072644;
  --color-navy:#072644;
  --color-white:#FFFFFF;
  --color-accent-badge:#B8860B;
  --color-body:#3E5A75;
  --color-hairline:#D6E4F0;
  --radius-button:10px;
  --radius-card:14px;
  --transition-base:200ms cubic-bezier(0.22,1,0.36,1);
  --transition-image-zoom:400ms cubic-bezier(0.22,1,0.36,1);
  --shell:1180px;

  /* màu phụ dùng trực tiếp trong thiết kế */
  --xanh-dam:#2F506F;      /* chữ đậm trên nền xanh nhạt */
  --xanh-phu:#4A6480;      /* chữ nội dung phụ */
  --xanh-mo:#7A8EA3;       /* chữ mờ, nhãn */
  --xanh-nhat:#9CC3E4;     /* chữ trên nền navy */
  --xanh-sang:#C9E1F4;     /* chữ / viền trên nền navy */
  --do-nhan:#B42318;       /* chấm nhấp nháy, cảnh báo trên nền sáng */
  --do-nhan-toi:#FF9B8F;   /* cảnh báo trên nền navy */
  --nen-footer:#041B31;
  --hover-faq:#F5FAFD;
}

/* ---------- 2. NỀN CHUNG ---------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--color-white);
  color:var(--color-body);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,sans-serif;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
a{color:#1E6FB5;text-decoration:none}
a:hover{color:var(--color-navy)}
:focus-visible{outline:2px solid #1E6FB5;outline-offset:2px}

@keyframes bc-dot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.82)}}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:1ms!important}
  html{scroll-behavior:auto}
}

/* Thẻ bọc toàn trang — BẮT BUỘC clip, không dùng hidden (sẽ làm sticky mất tác dụng) */
.trang{
  font-family:'Be Vietnam Pro',system-ui,-apple-system,sans-serif;
  color:var(--color-body);
  background:var(--color-white);
  overflow-x:clip;
}

.khung{max-width:var(--shell);margin:0 auto}

/* Neo cho anchor — trừ chiều cao header sticky */
.co-neo{scroll-margin-top:88px}

/* ---------- 3. CHỮ TIÊU ĐỀ ---------- */
/* line-height >= 1.3 + padding-top 0.08em: nếu chặt hơn sẽ cắt dấu tiếng Việt (Ở, Ầ, Ố) */
.tieu-de-1{
  margin:0;
  font-size:clamp(32px,5vw,52px);
  line-height:1.3;
  padding-top:0.08em;
  font-weight:700;
  letter-spacing:-0.025em;
  color:var(--color-navy);
}
.tieu-de-2{
  margin:0;
  font-size:clamp(26px,3.6vw,40px);
  line-height:1.32;
  padding-top:0.08em;
  font-weight:700;
  letter-spacing:-0.025em;
  color:var(--color-navy);
}
.chu-gradient{
  background:linear-gradient(135deg,var(--heading-gradient-start),var(--heading-gradient-end));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  color:transparent;
}
.nhan-khoi{
  font-size:12px;font-weight:600;letter-spacing:0.12em;
  text-transform:uppercase;color:var(--color-navy);
}
.doan{margin:0;text-align:justify;text-justify:inter-word}

/* ---------- 4. NÚT DÙNG CHUNG ---------- */
.nut{
  display:inline-flex;align-items:center;justify-content:center;
  font-family:inherit;font-weight:600;
  border:0;border-radius:var(--radius-button);cursor:pointer;
  transition:transform var(--transition-base),filter var(--transition-base),box-shadow var(--transition-base),background var(--transition-base),border-color var(--transition-base);
}
.nut:active{transform:scale(0.97)}
.nut--navy{
  background:var(--color-navy);color:var(--color-white);
  font-size:16px;padding:14px 24px;
  box-shadow:0 6px 16px rgba(7,38,68,0.18);
}
.nut--navy:hover{filter:brightness(1.14);transform:scale(1.02);box-shadow:0 10px 24px rgba(7,38,68,0.26);color:var(--color-white)}
.nut--nho{font-size:15px;padding:12px 22px}
.nut--trang{
  background:var(--color-white);color:var(--color-navy);
  font-size:16px;padding:14px 24px;min-height:52px;
  box-shadow:0 8px 20px rgba(0,0,0,0.24);
}
.nut--trang:hover{filter:brightness(0.97);transform:scale(1.02);box-shadow:0 14px 30px rgba(0,0,0,0.32);color:var(--color-navy)}
.nut--vien{
  background:rgba(255,255,255,0.1);color:var(--color-white);
  font-size:16px;padding:14px 24px;min-height:52px;
  border:1.5px solid rgba(255,255,255,0.5);
}
.nut--vien:hover{background:rgba(255,255,255,0.18);border-color:var(--color-white);transform:scale(1.02);color:var(--color-white)}
/* nút "Giữ suất cho tôi" — bo 12px, tự giãn full chiều ngang trên mobile */
.nut--giu-suat{
  flex:1 1 auto;gap:7px;min-height:46px;padding:11px 20px;border-radius:12px;
  background:var(--color-navy);color:var(--color-white);font-size:15px;white-space:nowrap;
  transition:transform var(--transition-base),box-shadow var(--transition-base);
}
.nut--giu-suat:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(7,38,68,0.24);color:var(--color-white)}

/* ---------- 5. ẢNH TRONG THẺ ---------- */
.o-anh{position:relative;overflow:hidden;border-radius:var(--radius-card)}
.o-anh img{
  position:absolute;inset:0;display:block;width:100%;height:100%;
  object-fit:cover;transition:transform var(--transition-image-zoom);
}
.o-anh:hover img{transform:scale(1.05)}

/* ---------- 6. HEADER STICKY ---------- */
.header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,0.97);
  border-bottom:1px solid var(--color-hairline);
}
.header__inner{
  max-width:var(--shell);margin:0 auto;padding:10px 16px;
  display:flex;align-items:center;gap:12px;flex-wrap:nowrap;
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo img{display:block;height:clamp(34px,4vw,42px);width:auto}
.logo__chu{display:grid;gap:1px}
.logo__ten{font-size:20px;font-weight:700;letter-spacing:-0.02em;line-height:1.1;color:var(--color-navy)}
.logo__phu{font-size:10px;font-weight:500;letter-spacing:0.08em;text-transform:uppercase;color:var(--xanh-mo)}
.nav{display:flex;align-items:center;gap:18px;margin-left:auto;flex-wrap:nowrap}
.nav__link{
  font-size:15px;font-weight:500;color:var(--color-navy);
  background-image:linear-gradient(#072644,#072644);
  background-repeat:no-repeat;background-position:0 100%;background-size:0% 1.5px;
  transition:background-size var(--transition-base);
}
.nav__link:hover{background-size:100% 1.5px}
.nav__hotline{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--color-navy)}
.nav__hotline:hover{color:#1E6FB5}

/* ---------- 7. KHỐI 1 — HERO ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--bg-gradient-start),var(--bg-gradient-end));
}
.hero__nen{
  position:absolute;left:0;right:0;top:-12%;height:124%;
  background:
    radial-gradient(60% 55% at 78% 30%,rgba(255,255,255,0.75),rgba(255,255,255,0) 70%),
    linear-gradient(135deg,rgba(30,111,181,0.08),rgba(7,38,68,0.05));
  will-change:transform;pointer-events:none;
}
.hero__grid{
  position:relative;max-width:var(--shell);margin:0 auto;
  padding:clamp(30px,6vw,84px) 22px clamp(38px,6vw,88px);
  display:grid;gap:clamp(22px,4vw,56px);align-items:center;
  grid-template-columns:1.02fr 0.98fr;
  grid-template-areas:"hero-text hero-media" "hero-text hero-form";
}
.hero__text{grid-area:hero-text;display:grid;grid-template-columns:minmax(0,1fr);gap:22px;max-width:560px;min-width:0}
.hero__gioi-thieu{font-size:clamp(16px,1.5vw,18.5px);line-height:1.7;color:var(--xanh-dam)}
.hero__o-nho{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;max-width:480px;min-width:0}
.o-nho{
  background:var(--color-white);border:1px solid var(--xanh-sang);
  border-radius:12px;padding:12px 14px;
  transition:transform var(--transition-base),box-shadow var(--transition-base),border-color var(--transition-base);
}
.o-nho:hover{transform:translateY(-3px);border-color:#1E6FB5;box-shadow:0 12px 26px rgba(7,38,68,0.16)}
.o-nho--suat{display:flex;align-items:center;gap:9px}
.o-nho__nhan{font-size:11px;font-weight:600;letter-spacing:0.1em;text-transform:uppercase;color:var(--color-navy)}
.o-nho__gia-tri{font-size:20px;font-weight:700;color:var(--color-navy);margin-top:3px}
.cham{width:8px;height:8px;border-radius:50%;flex:0 0 auto;animation:bc-dot 1.6s ease-in-out infinite}
.cham--xanh{background:#1E6FB5}
.cham--do{background:var(--do-nhan)}
.o-nho__suat{font-size:15px;font-weight:600;color:var(--color-navy);font-variant-numeric:tabular-nums}

.hero__media{grid-area:hero-media;display:grid;gap:14px;justify-items:center}
.hero__form{grid-area:hero-form}

/* Ngăn xếp 3 ảnh */
.ngan-xep{
  position:relative;width:100%;aspect-ratio:4/3;padding-top:20px;
  cursor:grab;touch-action:pan-y;user-select:none;
}
.ngan-xep__lop{
  position:absolute;left:0;right:0;top:20px;bottom:0;overflow:hidden;
  border-radius:var(--radius-card);box-shadow:0 24px 60px rgba(7,38,68,0.18);
  transition:transform 420ms cubic-bezier(0.22,1,0.36,1),opacity 420ms cubic-bezier(0.22,1,0.36,1);
}
.ngan-xep__lop img{
  display:block;width:100%;height:100%;object-fit:cover;
  transition:transform var(--transition-image-zoom);transform:scale(1);
}
/* chỉ ảnh đang ở trước mới phóng khi hover */
.ngan-xep.dang-hover .ngan-xep__lop[data-vi-tri="0"] img{transform:scale(1.05)}
.ngan-xep__mui-ten{
  position:absolute;top:calc(50% + 10px);transform:translateY(-50%);z-index:6;
  padding:6px 10px;border:0;background:transparent;color:rgba(255,255,255,0.9);
  font-size:34px;font-weight:400;line-height:1;cursor:pointer;
  text-shadow:0 2px 10px rgba(7,38,68,0.45);
  align-items:center;justify-content:center;
  transition:opacity var(--transition-base);opacity:0;display:none;
}
.ngan-xep__mui-ten--truoc{left:10px}
.ngan-xep__mui-ten--sau{right:10px}
.ngan-xep.dang-hover .ngan-xep__mui-ten{opacity:0.72}
.ngan-xep__mui-ten:hover{opacity:1}
.ngan-xep__cham{
  position:absolute;left:0;right:0;bottom:12px;z-index:5;
  justify-content:center;align-items:center;gap:6px;display:none;
}
.ngan-xep__cham button{
  height:6px;width:6px;padding:0;border:0;border-radius:99px;cursor:pointer;
  background:rgba(255,255,255,0.55);transition:all var(--transition-base);
}
.ngan-xep__cham button[aria-current="true"]{width:20px;background:rgba(7,38,68,0.55)}
/* mũi tên + chấm chỉ hiện trên thiết bị có chuột và không phải mobile */
@media (hover:hover) and (pointer:fine) and (min-width:761px){
  .ngan-xep__mui-ten{display:flex}
  .ngan-xep__cham{display:flex}
}

/* ---------- 8. KHỐI 1.5 — DẢI SỐ LIỆU ---------- */
.so-lieu{background:var(--color-white)}
.so-lieu__inner{max-width:var(--shell);margin:0 auto;padding:clamp(32px,5vw,64px) 22px}
.so-lieu__gach{
  height:5px;border-radius:99px;margin-bottom:22px;
  background:linear-gradient(90deg,var(--bg-gradient-start),var(--bg-gradient-end));
}
.so-lieu__nhan{margin-bottom:22px}
.so-lieu__luoi{display:grid;grid-template-columns:repeat(auto-fit,minmax(188px,1fr));gap:clamp(14px,1.8vw,24px)}
.so-lieu__o{display:grid;gap:8px;align-content:start}
/* khung cố định + flex-end: chân số và dòng mô tả thẳng một đường ngang */
.so-lieu__khung{display:flex;align-items:flex-end;height:clamp(34px,4.1vw,46px)}
/* CẢ 5 dòng số DÙNG CHUNG một cỡ chữ — không cho ô nào cỡ riêng */
.so-lieu__so{
  font-size:clamp(30px,3.6vw,40px);font-weight:700;letter-spacing:-0.02em;
  color:var(--color-navy);line-height:1;font-variant-numeric:tabular-nums;white-space:nowrap;
}
.so-lieu__mo-ta{font-size:15px;line-height:1.55;color:var(--xanh-phu)}

/* ---------- 9. KHỐI 2 — VẤN ĐỀ NGÀNH ---------- */
.van-de{background:linear-gradient(135deg,var(--bg-gradient-start),var(--bg-gradient-end))}
.van-de__inner{max-width:860px;margin:0 auto;padding:clamp(40px,7vw,96px) 22px}
.van-de__noi-dung{display:grid;gap:20px}
.van-de__doan{font-size:clamp(15.5px,1.6vw,18px);line-height:1.7;color:var(--xanh-dam)}
.van-de__nhan-manh{font-size:clamp(16px,1.7vw,19px);line-height:1.6;font-weight:700;color:var(--do-nhan);text-align:left}

/* ---------- 10. KHỐI 3 — CHÍNH SÁCH 3 KHÔNG ---------- */
.ba-khong{background:var(--color-white)}
.ba-khong__inner{
  max-width:var(--shell);margin:0 auto;padding:clamp(40px,7vw,96px) 22px;
  display:grid;gap:clamp(40px,5vw,68px);
}
.ba-khong__dau{display:grid;gap:14px;max-width:100%}
.ba-khong__dau .tieu-de-2{margin-top:-9px}
.ba-khong__the-luoi{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:clamp(16px,2vw,24px)}
.the-khong{
  background:var(--color-white);border:1px solid var(--xanh-sang);
  border-radius:var(--radius-card);padding:18px;display:grid;gap:14px;
}
.the-khong .o-anh{aspect-ratio:16/10;border-radius:10px}
.the-khong__chu{display:grid;gap:7px}
.the-khong__ten{font-size:21px;font-weight:700;color:var(--color-navy);letter-spacing:-0.02em;line-height:1.3}
.the-khong__mo-ta{font-size:15px;line-height:1.65;color:var(--xanh-phu)}

.hop-dong{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:clamp(24px,3.5vw,48px);align-items:center}
.hop-dong .o-anh{aspect-ratio:4/3;box-shadow:0 18px 44px rgba(7,38,68,0.14)}
.hop-dong__chu{display:grid;gap:18px}
.hop-dong__tieu-de{
  margin:0;font-size:clamp(19px,2.05vw,25px);line-height:1.35;
  font-weight:700;letter-spacing:-0.02em;color:var(--color-navy);
}
.hop-dong__mo-ta{font-size:15px;line-height:1.7;color:var(--xanh-phu)}
.hop-dong__nut{justify-self:start}

.bao-gom{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:clamp(16px,2vw,24px)}
.bao-gom__the{border-radius:var(--radius-card);padding:clamp(20px,2.5vw,28px);display:grid;gap:14px;align-content:start}
.bao-gom__the--co{background:linear-gradient(135deg,var(--bg-gradient-start),var(--bg-gradient-end))}
.bao-gom__the--khong{background:var(--color-white);border:1px solid var(--color-hairline)}
.bao-gom__ten{font-size:19px;font-weight:700;color:var(--color-navy)}
.bao-gom__ds{margin:0;padding:0;list-style:none;display:grid;gap:11px;font-size:15.5px;line-height:1.6;color:var(--xanh-dam)}
.bao-gom__ds li{display:grid;grid-template-columns:20px 1fr;gap:10px;align-items:start}
.bao-gom__tick{color:#1E6FB5;font-weight:700;line-height:1.5}
.bao-gom__ds--khong{gap:13px;line-height:1.65;color:var(--xanh-phu);text-align:justify;text-justify:inter-word}
.bao-gom__ds--khong li{display:block}
.bao-gom__ds--khong strong{color:var(--color-navy)}

/* ---------- 11. KHỐI 5 — HỌC PHÍ ---------- */
.hoc-phi{background:linear-gradient(135deg,var(--bg-gradient-start),var(--bg-gradient-end))}
.hoc-phi__inner{
  max-width:var(--shell);margin:0 auto;padding:clamp(40px,7vw,96px) 22px;
  display:grid;gap:clamp(26px,3vw,38px);
}
.hoc-phi__dau{display:grid;gap:14px;max-width:720px}
.hoc-phi__dau .doan{font-size:clamp(15px,1.5vw,17px);line-height:1.65;color:var(--xanh-dam)}
.hoc-phi__than{display:grid;gap:22px}

.tab-bar{
  position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:4px;
  background:rgba(255,255,255,0.7);border:1px solid var(--xanh-sang);
  border-radius:12px;padding:4px;max-width:520px;
}
.tab-bar__chi-bao{
  position:absolute;top:4px;bottom:4px;left:4px;width:calc((100% - 8px)/3);
  border-radius:9px;background:var(--color-navy);
  box-shadow:0 6px 16px rgba(7,38,68,0.22);
  transition:transform 250ms cubic-bezier(0.22,1,0.36,1);
  transform:translateX(0);
}
.tab-bar__nut{
  position:relative;z-index:1;font-family:inherit;font-size:15px;font-weight:600;
  padding:12px 8px;border:0;border-radius:9px;background:transparent;cursor:pointer;
  color:var(--color-body);transition:color var(--transition-base);
}
.tab-bar__nut[aria-selected="true"]{color:var(--color-white)}

.tab-panel{display:grid;gap:22px}
.tab-panel[hidden]{display:none}
.goi-luoi{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.goi-luoi--don{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.hoc-phi__anh{aspect-ratio:21/9}

/* Thẻ gói */
.goi{
  background:var(--color-white);border:1px solid var(--color-hairline);
  border-radius:var(--radius-card);padding:22px;
  display:grid;gap:13px;align-content:start;scroll-snap-align:center;box-shadow:none;
}
.goi--navy{
  background:var(--color-navy);border-color:var(--color-navy);
  box-shadow:0 20px 48px rgba(7,38,68,0.26);
}
.goi__dau{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:24px}
.goi__ten{font-size:13px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--xanh-mo)}
.goi--navy .goi__ten{color:var(--xanh-nhat)}
.goi__badge{
  font-size:10.5px;font-weight:700;letter-spacing:0.06em;text-transform:uppercase;
  color:var(--color-navy);background:var(--color-accent-badge);
  padding:4px 8px;border-radius:6px;flex:0 0 auto;
}
.goi__gia{
  font-size:33px;font-weight:700;letter-spacing:-0.025em;color:var(--color-navy);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.goi--navy .goi__gia{color:var(--color-white)}
.goi__tom-tat{display:grid}
.goi__dong{
  display:flex;align-items:baseline;justify-content:space-between;gap:14px;
  padding:9px 0;border-top:1px solid var(--color-hairline);
}
.goi--navy .goi__dong{border-top-color:rgba(255,255,255,0.14)}
.goi__nhan{font-size:13px;letter-spacing:0.01em;color:var(--xanh-mo)}
.goi--navy .goi__nhan{color:rgba(201,225,244,0.72)}
.goi__gia-tri{font-size:15px;font-weight:700;color:var(--color-navy);font-variant-numeric:tabular-nums;white-space:nowrap}
.goi--navy .goi__gia-tri{color:var(--color-white)}

/* Nút mở chi tiết — kiểu tối giản: chỉ chữ + mũi tên, không viền không nền */
.goi__mo{
  font-family:inherit;justify-self:start;display:inline-flex;align-items:center;gap:7px;
  min-height:44px;padding:0;margin:-6px 0 -4px;border:0;background:none;
  color:#5B7794;font-size:13.5px;font-weight:600;letter-spacing:0.01em;cursor:pointer;
  transition:opacity var(--transition-base);
}
.goi--navy .goi__mo{color:var(--xanh-nhat)}
.goi__mo:hover{opacity:0.65}
.goi__mui-ten{flex:0 0 auto;font-size:9px;line-height:1;transition:transform 280ms cubic-bezier(0.22,1,0.36,1);transform:rotate(0deg)}
.goi__mo[aria-expanded="true"] .goi__mui-ten{transform:rotate(180deg)}

.goi__panel{
  overflow:hidden;max-height:0;opacity:0;
  transition:max-height 340ms cubic-bezier(0.22,1,0.36,1),opacity 240ms cubic-bezier(0.22,1,0.36,1);
}
.goi__panel-inner{display:grid}
.goi__muc{
  border-top:1px solid var(--color-hairline);padding:11px 0;
  font-size:14.5px;line-height:1.55;color:var(--xanh-phu);
}
.goi--navy .goi__muc{border-top-color:rgba(255,255,255,0.16);color:var(--xanh-sang)}
.goi__muc strong{color:var(--color-navy);font-weight:700}
.goi--navy .goi__muc strong{color:var(--color-white)}
/* mục gói không có: dấu "–" căn giữa màu mờ, giữ hàng so sánh thẳng */
.goi__muc--trong{color:#A8BACB;text-align:center}
.goi--navy .goi__muc--trong{color:rgba(201,225,244,0.45)}
.goi__dat{display:grid;gap:5px;margin-top:6px}
.goi__dat-km{display:grid;grid-template-columns:14px 1fr;gap:8px}
.goi__cham-dat{color:#A8BACB}
.goi--navy .goi__cham-dat{color:rgba(201,225,244,0.45)}
.canh-bao{color:var(--do-nhan);font-weight:600}
.goi--navy .canh-bao{color:var(--do-nhan-toi)}

/* Thẻ phụ "C1 lái được xe gì" */
.the-c1{
  background:var(--color-white);border:1px solid var(--color-hairline);
  border-radius:var(--radius-card);padding:clamp(22px,2.5vw,30px);
  display:grid;gap:12px;align-content:start;
}
.the-c1__ten{font-size:18px;font-weight:700;color:var(--color-navy)}
.the-c1 .doan{font-size:15.5px;line-height:1.7;color:var(--xanh-phu)}
.the-c1__ghi-chu{margin:0;font-size:14px;line-height:1.65;color:var(--xanh-mo)}

/* Dải ưu đãi cuối khối — rộng bằng ảnh phía trên */
.dai-uu-dai{
  display:flex;align-items:center;gap:clamp(14px,2vw,24px);flex-wrap:wrap;
  justify-content:space-between;background:var(--color-white);
  border:1px solid var(--xanh-sang);border-radius:var(--radius-card);
  box-shadow:0 10px 30px rgba(7,38,68,0.07);
  padding:clamp(16px,2vw,20px) clamp(18px,2.4vw,24px);
}
.dai-uu-dai__chu{display:grid;gap:4px;min-width:0;flex:99 1 260px}
.dai-uu-dai__dong{display:flex;align-items:center;gap:9px}
.dai-uu-dai__tieu-de{
  font-size:clamp(18px,2vw,22px);font-weight:700;letter-spacing:-0.02em;
  line-height:1.25;color:var(--color-navy);
}
.dai-uu-dai__phu{font-size:14.5px;line-height:1.5;color:#5B7794;padding-left:17px}
.dai-uu-dai__phu .suat{font-weight:600;color:var(--do-nhan);font-variant-numeric:tabular-nums}

/* ---------- 12. KHỐI 6 — LỘ TRÌNH ---------- */
.lo-trinh{background:var(--color-white)}
.lo-trinh__inner{
  max-width:var(--shell);margin:0 auto;padding:clamp(40px,7vw,96px) 22px;
  display:grid;gap:clamp(28px,3.5vw,46px);
}
.lo-trinh__dau{display:grid;gap:14px;max-width:100%}
.lo-trinh__dau .doan{font-size:clamp(15px,1.5vw,17px);line-height:1.65;color:var(--xanh-phu)}
.lo-trinh__ds{display:grid;gap:clamp(18px,2.4vw,28px)}
.chang{
  border:1px solid var(--color-hairline);border-radius:var(--radius-card);
  padding:clamp(16px,2.4vw,28px);display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:clamp(20px,3vw,36px);align-items:start;
}
.chang__chu{display:grid;gap:16px}
.chang__nhan{font-size:12px;font-weight:600;letter-spacing:0.12em;text-transform:uppercase;color:var(--color-accent-badge)}
.chang__ten{margin:0;font-size:clamp(19px,2.1vw,24px);line-height:1.3;font-weight:700;letter-spacing:-0.02em;color:var(--color-navy)}
.chang__ds{margin:0;padding:0;list-style:none;display:grid;gap:16px}
.chang__ds li{display:grid;grid-template-columns:32px 1fr;gap:14px;align-items:start}
.chang__so{
  width:32px;height:32px;border-radius:50%;background:var(--bg-gradient-start);
  border:1px solid var(--xanh-sang);color:var(--color-navy);
  font-size:15px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.chang__buoc{font-size:17px;line-height:1.7;color:var(--xanh-phu);text-align:justify;text-justify:inter-word}
.chang__buoc strong{color:var(--color-navy)}
/* desktop: ảnh sticky 4:3 — mobile: relative 16:9 (giữ top:96px khi relative sẽ đè lên chữ) */
.chang__anh{position:sticky;top:96px;overflow:hidden;border-radius:12px;aspect-ratio:4/3}
.chang__anh img{
  position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:cover;
  transition:transform var(--transition-image-zoom);
}
.chang__anh:hover img{transform:scale(1.05)}

/* ---------- 13. KHỐI 6.5 — BANNER ƯU ĐÃI ---------- */
.banner-uu-dai{background:var(--color-navy)}
.banner-uu-dai__inner{
  max-width:var(--shell);margin:0 auto;padding:clamp(36px,6vw,84px) 22px;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));
  gap:clamp(26px,4vw,52px);align-items:center;
}
.banner-uu-dai__chu{display:grid;gap:16px}
.banner-uu-dai__nhan{
  justify-self:start;font-size:11px;font-weight:700;letter-spacing:0.12em;
  text-transform:uppercase;color:var(--color-navy);background:var(--color-accent-badge);
  padding:6px 12px;border-radius:6px;
}
.banner-uu-dai__tieu-de{
  margin:0;font-size:clamp(26px,3.4vw,38px);line-height:1.3;padding-top:0.08em;
  font-weight:700;letter-spacing:-0.025em;color:var(--color-white);
}
.banner-uu-dai__doan{font-size:clamp(14.5px,1.5vw,16.5px);line-height:1.65;color:var(--xanh-sang);max-width:520px}
.banner-uu-dai__sinh-vien{margin:0;font-size:15px;line-height:1.65;color:var(--xanh-nhat);max-width:520px}
.banner-uu-dai__the{
  justify-self:stretch;background:var(--color-white);border-radius:var(--radius-card);
  padding:clamp(22px,2.6vw,30px);display:grid;gap:16px;max-width:400px;width:100%;
  box-shadow:0 24px 60px rgba(0,0,0,0.28);
}
.banner-uu-dai__the-nhan{font-size:13px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--xanh-mo)}
.banner-uu-dai__so{
  font-size:clamp(34px,4vw,46px);font-weight:700;letter-spacing:-0.03em;
  color:var(--color-navy);line-height:1;font-variant-numeric:tabular-nums;
}
.banner-uu-dai__the .nut{width:100%;box-shadow:0 6px 16px rgba(7,38,68,0.2);padding:14px 22px}
.banner-uu-dai__the .nut--navy:hover{box-shadow:0 12px 26px rgba(7,38,68,0.3)}
.banner-uu-dai__ghi-chu{font-size:13.5px;line-height:1.6;color:var(--xanh-mo)}

/* ---------- 14. KHỐI 7 — FAQ ---------- */
.faq{background:var(--color-white)}
.faq__inner{max-width:900px;margin:0 auto;padding:clamp(40px,7vw,96px) 22px;display:grid;gap:clamp(24px,3vw,36px)}
.faq__ds{display:grid;border-top:1px solid var(--color-hairline)}
.faq__muc{border-bottom:1px solid var(--color-hairline)}
.faq__nut{
  font-family:inherit;width:100%;display:flex;align-items:center;justify-content:space-between;
  gap:16px;text-align:left;background:transparent;border:0;padding:18px 14px;cursor:pointer;
  transition:background var(--transition-base);
}
.faq__nut:hover{background:var(--hover-faq)}
.faq__cau-hoi{font-size:17px;font-weight:600;line-height:1.45;color:var(--color-navy)}
.faq__icon{
  flex:0 0 auto;width:29px;height:29px;border-radius:50%;
  background:var(--bg-gradient-start);color:var(--color-navy);
  font-size:18px;font-weight:600;display:flex;align-items:center;justify-content:center;
  transition:transform 300ms cubic-bezier(0.22,1,0.36,1);transform:rotate(0deg);
}
.faq__nut[aria-expanded="true"] .faq__icon{transform:rotate(180deg)}
.faq__panel{
  overflow:hidden;max-height:0;opacity:0;
  transition:max-height 320ms cubic-bezier(0.22,1,0.36,1),opacity 220ms cubic-bezier(0.22,1,0.36,1);
}
.faq__tra-loi{
  margin:0;padding:0 14px 20px;font-size:15.5px;line-height:1.75;color:var(--xanh-phu);
  text-align:justify;text-justify:inter-word;
}

/* ---------- 15. KHỐI 8 — CTA CUỐI ---------- */
.cta-cuoi{position:relative;overflow:hidden;background:var(--color-navy)}
.cta-cuoi__nen{position:absolute;left:0;right:0;top:-12%;height:124%;will-change:transform}
.cta-cuoi__nen img{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:cover}
.cta-cuoi__phu{position:absolute;inset:0;background:rgba(7,38,68,0.62)}
.cta-cuoi__grid{
  position:relative;max-width:var(--shell);margin:0 auto;
  padding:clamp(40px,6.5vw,92px) 22px;display:grid;
  grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
  gap:clamp(28px,4vw,56px);align-items:center;
}
.cta-cuoi__chu{display:grid;gap:18px;max-width:540px}
.cta-cuoi__tieu-de{
  margin:0;font-size:clamp(26px,3.6vw,40px);line-height:1.32;padding-top:0.08em;
  font-weight:700;letter-spacing:-0.025em;color:var(--color-white);
}
.cta-cuoi__doan{font-size:clamp(15px,1.5vw,17px);line-height:1.7;color:var(--xanh-sang)}
.cta-cuoi__doan .suat{font-weight:600;color:var(--color-white);font-variant-numeric:tabular-nums}
.cta-cuoi__nut{display:flex;gap:12px;flex-wrap:wrap}
.cta-cuoi__gio{margin:0;font-size:14.5px;line-height:1.65;color:var(--xanh-nhat)}
.cta-cuoi__form{justify-self:stretch;max-width:440px;width:100%}

/* ---------- 16. FORM ĐĂNG KÝ (dùng chung Hero + Khối 8) ---------- */
.form-dk{
  background:var(--color-white);border-radius:var(--radius-card);padding:24px;
  box-shadow:0 18px 44px rgba(7,38,68,0.14);display:grid;gap:18px;text-align:left;
}
.form-dk__tieu-de{font-size:19px;font-weight:700;color:var(--color-navy);letter-spacing:-0.01em}
.form-dk form{display:grid;gap:12px}
.form-dk input,.form-dk select{
  font-family:inherit;font-size:15px;color:var(--color-navy);background:var(--color-white);
  padding:14px;border:1.5px solid var(--color-hairline);border-radius:var(--radius-button);
  outline:none;min-height:48px;width:100%;
  transition:border-color var(--transition-base),box-shadow var(--transition-base);
}
.form-dk select{cursor:pointer;appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%237A8EA3' d='M1 1.5 6 6.5l5-5'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:38px;
}
.form-dk input:hover,.form-dk select:hover{border-color:#B9D3E8}
.form-dk input:focus,.form-dk select:focus{border-color:var(--color-navy);box-shadow:0 0 0 3px rgba(30,111,181,0.16)}
.form-dk__loi{
  font-size:12.5px;line-height:1.5;color:#A3341F;background:#FDF0EC;
  border-radius:8px;padding:9px 12px;
}
.form-dk__gui{
  font-family:inherit;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  width:100%;background:var(--color-navy);color:var(--color-white);
  font-size:16px;font-weight:600;padding:15px 22px;min-height:48px;
  border:0;border-radius:var(--radius-button);cursor:pointer;
  box-shadow:0 6px 16px rgba(7,38,68,0.2);
  transition:transform var(--transition-base),filter var(--transition-base),box-shadow var(--transition-base);
}
.form-dk__gui:hover{filter:brightness(1.12);transform:scale(1.02);box-shadow:0 12px 26px rgba(7,38,68,0.28)}
.form-dk__gui:active{transform:scale(0.97)}
.form-dk__gui:focus-visible{box-shadow:0 0 0 3px rgba(30,111,181,0.35)}
.form-dk__gui[disabled]{cursor:default;filter:none;transform:none;opacity:0.75}
.form-dk__xong{
  display:grid;gap:8px;background:var(--bg-gradient-start);border:1px solid var(--xanh-sang);
  border-radius:12px;padding:18px;
}
.form-dk__xong-tieu-de{font-size:15px;font-weight:600;color:var(--color-navy)}
.form-dk__xong-mo-ta{font-size:13px;line-height:1.6;color:var(--xanh-phu)}

/* ---------- 17. FOOTER ---------- */
.footer{background:var(--nen-footer);color:var(--xanh-nhat)}
.footer__inner{
  max-width:var(--shell);margin:0 auto;
  padding:clamp(34px,4.5vw,60px) 20px clamp(22px,2.5vw,30px);
  display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:clamp(28px,4vw,56px);
}
.footer__cot{display:grid;gap:18px;align-content:start}
.footer__cot--dau{gap:14px}
.footer__logo{display:block;height:46px;width:auto}
.footer__ten{font-size:15.5px;font-weight:600;line-height:1.5;color:var(--color-white)}
.footer__dia-chi{font-size:14.5px;line-height:1.65;color:#8FB4D6}
.footer__cap{display:grid;gap:3px}
.footer__nhan{font-size:11.5px;font-weight:600;letter-spacing:0.1em;text-transform:uppercase;color:#5F87AA}
.footer__hotline{
  font-size:19px;font-weight:700;letter-spacing:-0.01em;color:var(--color-white);
  font-variant-numeric:tabular-nums;justify-self:start;
}
.footer__hotline:hover{color:var(--xanh-sang)}
.footer__email{font-size:14.5px;line-height:1.5;color:var(--color-white);justify-self:start;word-break:break-word}
.footer__email:hover{color:var(--xanh-sang)}
.footer__gio{font-size:14.5px;line-height:1.5;color:#8FB4D6}
.footer__cot--theo-doi{gap:3px}
.footer__cot--theo-doi .footer__nhan{margin-bottom:5px}
.footer__link{font-size:14.5px;line-height:1.9;color:var(--xanh-sang);justify-self:start}
.footer__link:hover{color:var(--color-white)}
.footer__duoi{max-width:var(--shell);margin:0 auto;padding:0 20px clamp(24px,3vw,32px)}
.footer__ban-quyen{
  border-top:1px solid rgba(156,195,228,0.16);padding-top:16px;
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#5F87AA;
}
.footer__ban-quyen a{color:#8FB4D6}
.footer__ban-quyen a:hover{color:var(--color-white)}

/* ---------- 18. THANH CTA CỐ ĐỊNH (CHỈ MOBILE) ---------- */
.thanh-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  background:rgba(255,255,255,0.98);border-top:1px solid var(--color-hairline);
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  grid-template-columns:1fr 1fr;gap:10px;
  box-shadow:0 -8px 24px rgba(7,38,68,0.12);
  transition:transform 320ms cubic-bezier(0.22,1,0.36,1);
  transform:translateY(120%);
}
.thanh-cta.hien{transform:translateY(0)}
.thanh-cta a{
  display:inline-flex;align-items:center;justify-content:center;min-height:48px;
  font-size:15.5px;font-weight:600;border-radius:var(--radius-button);
  transition:transform var(--transition-base),filter var(--transition-base),background var(--transition-base);
}
.thanh-cta a:active{transform:scale(0.97)}
.thanh-cta__goi{background:var(--color-navy);color:var(--color-white)}
.thanh-cta__goi:hover{filter:brightness(1.12);color:var(--color-white)}
.thanh-cta__so{background:var(--bg-gradient-start);color:var(--color-navy);border:1.5px solid var(--xanh-sang)}
.thanh-cta__so:hover{background:#E3F1FB;color:var(--color-navy)}

/* ============================================================
   19. MOBILE — ngưỡng duy nhất 760px
   ============================================================ */
@media (max-width:760px){
  /* Header: ẩn 3 anchor + hotline chữ, còn logo + nút */
  .nav__link,.nav__hotline{display:none}

  /* Hero: 1 cột, thứ tự ảnh → chữ → form */
  .hero__grid{
    grid-template-columns:minmax(0,1fr);
    grid-template-areas:"hero-media" "hero-text" "hero-form";
  }

  /* Dải số liệu: 2 cột, ô cuối chiếm cả hàng */
  .so-lieu__luoi{grid-template-columns:repeat(2,minmax(0,1fr))}
  .so-lieu__o:last-child{grid-column:span 2}

  /* Bảng giá: cuộn ngang có snap */
  .goi-luoi{
    grid-template-columns:none;
    grid-auto-flow:column;grid-auto-columns:86%;
    overflow-x:auto;scroll-snap-type:x mandatory;
    padding:2px 2px 8px;
    -webkit-overflow-scrolling:touch;
  }
  .goi-luoi--don{grid-auto-columns:86%}

  /* Lộ trình: ảnh relative 16:9 (top:auto — nếu giữ 96px sẽ đè lên chữ) */
  .chang__anh{position:relative;top:auto;aspect-ratio:16/9}

  /* Thanh CTA cố định chỉ có trên mobile */
  .thanh-cta{display:grid}

  /* Chừa chỗ cho thanh CTA để không che footer */
  .footer__duoi{padding-bottom:calc(clamp(24px,3vw,32px) + 78px)}

  /* Chữ căn justify trên màn hẹp dễ bị giãn rỗng — trả về căn trái */
  .doan,.chang__buoc,.faq__tra-loi,.bao-gom__ds--khong{text-align:left}

  /* Vùng bấm trên điện thoại: mọi nút tối thiểu 48px */
  .nut,.tab-bar__nut,.goi__mo,.form-dk__gui{min-height:48px}
}

/* ============================================================
   20. TRANG PHỤ — CHÍNH SÁCH BẢO MẬT (chinh-sach-bao-mat.html)
   Cột nội dung 820px, H1 navy (không gradient chữ)
   ============================================================ */
.header__inner--gon{justify-content:space-between;padding:10px 20px}
.cs-ve-trang-chu{font-size:14.5px;font-weight:600;color:#1E6FB5;white-space:nowrap}
.cs-ve-trang-chu:hover{color:var(--color-navy)}

.cs-hero{background:linear-gradient(180deg,var(--bg-gradient-start),var(--color-white))}
.cs-hero__inner{
  max-width:820px;margin:0 auto;
  padding:clamp(36px,5vw,72px) 20px clamp(24px,3vw,36px);
  display:grid;gap:14px;
}
.cs-nhan{font-size:11.5px;font-weight:600;letter-spacing:0.1em;text-transform:uppercase;color:#5F87AA}
.cs-h1{
  margin:0;font-size:clamp(30px,4.4vw,46px);line-height:1.3;padding-top:0.08em;
  font-weight:700;letter-spacing:-0.025em;color:var(--color-navy);
}
.cs-mo-dau{margin:0;font-size:16.5px;line-height:1.7;color:var(--color-body);max-width:62ch}
.cs-ngay{font-size:14px;color:#5F87AA}

.cs-than{
  max-width:820px;margin:0 auto;
  padding:clamp(8px,2vw,20px) 20px clamp(48px,6vw,88px);
  display:grid;gap:clamp(28px,3.5vw,42px);
}
.cs-muc{display:grid;gap:12px}
.cs-h2{
  margin:0;font-size:clamp(20px,2.4vw,25px);line-height:1.32;padding-top:0.08em;
  font-weight:700;letter-spacing:-0.02em;color:var(--color-navy);
}
.cs-doan{margin:0;font-size:16px;line-height:1.8;text-align:justify;text-justify:inter-word}
.cs-manh{color:var(--color-navy);font-weight:600}
.cs-manh:hover{color:#1E6FB5}
.cs-o-lien-he{
  display:grid;gap:8px;background:var(--hover-faq);border:1px solid var(--color-hairline);
  border-radius:var(--radius-card);padding:18px 20px;font-size:15.5px;line-height:1.7;
}
.cs-nhom{display:grid;gap:14px}
.cs-y{display:grid;gap:5px;border-top:1px solid var(--color-hairline);padding-top:14px}
.cs-y__ten{font-size:16px;font-weight:600;color:var(--color-navy)}
.cs-y__chu{font-size:15.5px;line-height:1.75}
.cs-ghi-chu{margin:0;font-size:15.5px;line-height:1.75;color:#5B7794}
.cs-ds{margin:0;padding:0;list-style:none;display:grid;gap:11px;font-size:15.5px;line-height:1.75}
.cs-ds li{display:grid;grid-template-columns:22px 1fr;gap:10px}
.cs-cham{color:#1E6FB5;font-weight:700}

.cs-cta{padding:clamp(18px,2.2vw,24px)}
.cs-cta__tieu-de{font-size:clamp(17px,2vw,20px);font-weight:700;letter-spacing:-0.02em;line-height:1.3;color:var(--color-navy)}
.cs-cta__phu{font-size:14.5px;line-height:1.5;color:#5B7794}

.cs-footer{
  max-width:var(--shell);margin:0 auto;padding:clamp(28px,3.5vw,40px) 20px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.cs-footer__chu{font-size:14.5px;line-height:1.65}
.cs-footer__link{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:14px}
.cs-footer__link a{color:var(--xanh-sang)}
.cs-footer__link a:hover{color:var(--color-white)}
.cs-footer__link span{color:#5F87AA}

@media (max-width:760px){
  .cs-doan{text-align:left}
}