/* ==========================================================================
   MASTERUP ENGLISH — Hệ thống Anh ngữ (Giao tiếp · IELTS · Trẻ em · Doanh nghiệp)
   Phong cách: CORPORATE GIÁO DỤC PHỔ THÔNG (kiểu trung tâm tiếng Anh lớn ở VN):
   tin cậy, nhiều số liệu, nhiều nút kêu gọi hành động, section xen kẽ trắng / xám
   rất nhạt #F5F7FB, tiêu đề mục căn giữa có "eyebrow" xanh phía trên.
   Màu: brand đỏ #DB1F1F (đậm #9D0B0F, nhạt #FBE4E4) theo tông Langmaster, CTA cam #FE9C2B, vàng #FFCB2B
   (nút chính, giá ưu đãi), vàng #FFC53D (nhãn / ngôi sao), chữ #172033,
   xanh lá check #16A34A.
   Font: 'Be Vietnam Pro' — tiêu đề 700/800, thân 400/500 (một font duy nhất).
   Điểm nhận diện riêng:
   (1) Thanh "ưu đãi tháng" dính trên cùng có đếm ngược JS tới cuối tháng + nút
       đóng, và nút nổi "Nhận tư vấn" cố định góc phải dưới trên mọi trang.
   (2) "Bậc thang band điểm" 6 cấp vẽ bằng CSS: 6 cột cao dần từ Beginner 2.0
       tới Advanced 7.0+, mỗi cột ghi band + số buổi, hover nổi lên.
   (3) Form tư vấn xuất hiện ở hero, giữa trang và cuối trang đều dùng chung một
       kiểu thẻ trắng viền xanh (.consult).
   Ảnh: link trực tiếp (images.txt) qua biến --img trên .ph; giáo viên / học viên
   dùng avatar chữ cái gradient; chứng chỉ IELTS là thẻ CSS giả lập.
   ========================================================================== */
:root{
  --brand:#DB1F1F; --brand-d:#9D0B0F; --brand-l:#FBE4E4; --brand-xl:#FFF2F2;
  --cta:#FE9C2B; --cta-d:#E8860F; --gold:#FFCB2B; --green:#16A34A;
  --ink:#252525; --ink-2:#4A4A4A; --muted:#7A7A7A;
  --bg:#FFFFFF; --bg-soft:#F2F4F5; --line:#EADADA; --line-2:#D9BFBF;
  --ph:linear-gradient(135deg,#F7DEDE,#FBE4E4);
  --ff:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --r:14px; --r-lg:20px;
  --shadow:0 6px 24px rgba(37,37,37,.08); --shadow-lg:0 18px 48px rgba(157,11,15,.16);
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--ff);font-size:16px;line-height:1.6;color:var(--ink);background:var(--bg)}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.2;font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4.2vw,3.25rem)}
h2{font-size:clamp(1.6rem,3vw,2.4rem)}
h3{font-size:1.2rem;font-weight:700}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:8px;background:var(--brand);color:#fff;padding:8px 14px;border-radius:8px;z-index:999}
.skip:focus{left:8px}
.ph{background:var(--img,var(--ph)) center/cover no-repeat;border-radius:var(--r-lg)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- Nút ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:10px;font-weight:700;border:2px solid transparent;cursor:pointer;transition:.18s;text-decoration:none!important;line-height:1.2;white-space:nowrap}
.btn--cta{background:var(--cta);color:#fff;border-color:var(--cta)}
.btn--cta:hover{background:var(--cta-d);border-color:var(--cta-d);transform:translateY(-1px)}
.btn--brand{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn--brand:hover{background:var(--brand-d);border-color:var(--brand-d)}
.btn--outline{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn--outline:hover{background:var(--brand-l)}
.btn--ghost{background:var(--brand-l);color:var(--brand-d)}
.btn--ghost:hover{background:#FBE4E4}
.btn--sm{padding:8px 14px;font-size:.9rem;border-radius:8px}
.btn--lg{padding:15px 28px;font-size:1.05rem}
.btn--block{width:100%}

/* ---------- Thanh ưu đãi dính + header ---------- */
.sticky-wrap{position:sticky;top:0;z-index:100}
.promo{position:relative;background:linear-gradient(90deg,var(--brand-d),var(--brand));color:#fff;font-size:.9rem;font-weight:500}
.promo .container{display:flex;align-items:center;justify-content:center;gap:14px;min-height:40px;padding-top:6px;padding-bottom:6px;flex-wrap:wrap}
.promo b{color:var(--gold)}
.promo__cd{display:inline-flex;gap:4px;font-variant-numeric:tabular-nums}
.promo__cd span{background:rgba(255,255,255,.16);padding:2px 7px;border-radius:6px;font-weight:700}
.promo__link{color:#fff;text-decoration:underline;font-weight:700}
.promo__close{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:transparent;border:0;color:#fff;font-size:1.3rem;line-height:1;cursor:pointer;padding:4px 8px;opacity:.85}
.promo__close:hover{opacity:1}
.promo.is-hidden{display:none}
.header{background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 12px rgba(23,32,51,.05);position:relative}
.header .container{display:flex;align-items:center;gap:22px;min-height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--ink);letter-spacing:-.02em;text-decoration:none!important}
.logo__mark{width:40px;height:40px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:1.1rem;font-weight:800;position:relative;overflow:hidden;flex:none}
.logo__mark::after{content:"";position:absolute;right:-6px;bottom:-6px;width:18px;height:18px;background:var(--cta);border-radius:50%}
.logo span b{color:var(--brand)}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav>li{position:relative}
.nav .nav__cta{display:none}
.nav>li>a{display:flex;align-items:center;gap:4px;padding:10px 10px;border-radius:8px;color:var(--ink);font-weight:600;font-size:.92rem;white-space:nowrap;text-decoration:none!important}
.nav>li>a:hover,.nav>li>a.is-active{color:var(--brand);background:var(--brand-xl)}
.nav>li>a.is-active{box-shadow:inset 0 -2px 0 var(--brand)}
.nav .caret{width:8px;height:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);margin-left:2px}
.sub{position:absolute;top:100%;left:0;min-width:260px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);padding:8px;opacity:0;visibility:hidden;transform:translateY(8px);transition:.18s}
.nav>li:hover .sub,.nav>li:focus-within .sub{opacity:1;visibility:visible;transform:translateY(4px)}
.sub a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;color:var(--ink);font-weight:500;font-size:.93rem;text-decoration:none!important}
.sub a:hover{background:var(--brand-xl);color:var(--brand)}
.sub a i{width:30px;height:30px;border-radius:8px;background:var(--brand-l);color:var(--brand-d);display:grid;place-items:center;font-style:normal;font-weight:800;font-size:.8rem;flex:none}
.hotline{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none!important;font-weight:700;white-space:nowrap}
.hotline small{display:block;font-weight:500;color:var(--muted);font-size:.72rem;line-height:1}
.hotline i{width:38px;height:38px;border-radius:50%;background:var(--brand-l);display:grid;place-items:center;color:var(--brand)}
.hotline svg{width:18px;height:18px}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;position:relative;cursor:pointer;flex:none;padding:0}
.burger::before,.burger::after,.burger i{content:"";position:absolute;left:11px;right:11px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.burger::before{top:14px}.burger i{top:21px}.burger::after{top:28px}

/* ---------- Nút nổi ---------- */
.fab{position:fixed;right:18px;bottom:18px;z-index:90;display:inline-flex;align-items:center;gap:10px;background:var(--cta);color:#fff;padding:12px 18px 12px 14px;border-radius:999px;font-weight:700;box-shadow:0 10px 28px rgba(255,107,26,.4);text-decoration:none!important}
.fab:hover{background:var(--cta-d)}
.fab i{width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,.2);display:grid;place-items:center}
.fab svg{width:16px;height:16px}

/* ---------- Section chung ---------- */
.section{padding:72px 0}
.section--soft{background:var(--bg-soft)}
.section--brand{background:linear-gradient(135deg,var(--brand-d),var(--brand));color:#fff}
.section--sm{padding:48px 0}
.sec-head{text-align:center;max-width:760px;margin:0 auto 44px}
.sec-head.left{text-align:left;margin-left:0}
.eyebrow{display:inline-block;color:var(--brand);font-weight:700;font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px}
.section--brand .eyebrow{color:var(--gold)}
.sec-head p{color:var(--ink-2);margin:0;font-size:1.05rem}
.section--brand .sec-head p{color:rgba(255,255,255,.85)}
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g5{grid-template-columns:repeat(5,minmax(0,1fr))}
.g6{grid-template-columns:repeat(6,minmax(0,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;transition:.2s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.center{text-align:center}
.mt{margin-top:32px}
.badge{display:inline-flex;align-items:center;gap:6px;background:var(--brand-l);color:var(--brand-d);padding:4px 10px;border-radius:999px;font-size:.78rem;font-weight:700}
.badge--gold{background:#FFF3D1;color:#8A5A00}
.badge--cta{background:var(--cta);color:#fff}
.badge--green{background:#E6F7EC;color:#157A39}
.badge--red{background:#FDE8E8;color:#B42318}
.check{display:flex;flex-direction:column;gap:8px}
.check li{padding-left:28px;position:relative;color:var(--ink-2)}
.check li::before{content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:50%;background:#E6F7EC url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2316A34A' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center/11px no-repeat}
.stars{color:var(--gold);letter-spacing:2px;font-size:.95rem}
.price-old{color:var(--muted);text-decoration:line-through;font-weight:500}
.price-new{color:var(--cta);font-weight:800;font-size:1.35rem}

/* ---------- Form tư vấn (thẻ trắng viền xanh) ---------- */
.consult{background:#fff;border:2px solid var(--brand);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow-lg);color:var(--ink)}
.consult h3{font-size:1.3rem;margin-bottom:4px}
.consult .consult__sub{color:var(--ink-2);font-size:.92rem;margin-bottom:18px}
.consult .consult__gift{display:flex;gap:10px;align-items:center;background:#FFF3D1;border:1px dashed #E8B23A;border-radius:10px;padding:10px 12px;font-size:.88rem;color:#6B4600;margin-bottom:16px;font-weight:500}
.consult .consult__gift b{color:var(--cta)}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-weight:600;font-size:.9rem}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line-2);border-radius:10px;background:#fff;outline:none;transition:.15s}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-l)}
.field textarea{min-height:100px;resize:vertical}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.consult .note{font-size:.8rem;color:var(--muted);margin:10px 0 0;text-align:center}
.consult--wide{display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center;padding:36px}
.consult--wide .consult__intro h2{margin-bottom:12px}
.consult--wide .consult__intro p{color:var(--ink-2)}
.consult--wide .consult__intro .gift-big{font-size:1.5rem;font-weight:800;color:var(--cta);line-height:1.2;margin:14px 0 6px}
.form-ok{display:none;background:#E6F7EC;color:#14532D;border-radius:10px;padding:12px 14px;font-weight:600;margin-top:10px}
.form-ok.is-show{display:block}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(180deg,var(--brand-xl) 0%,#fff 100%);padding:56px 0 64px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;right:-120px;top:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(219,31,31,.12),transparent 70%)}
.hero .container{display:grid;grid-template-columns:1.25fr .9fr;gap:48px;align-items:center;position:relative}
.hero__tag{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px 6px 6px;font-weight:600;font-size:.9rem;margin-bottom:18px;box-shadow:var(--shadow)}
.hero__tag span{background:var(--cta);color:#fff;border-radius:999px;padding:3px 10px;font-size:.78rem;font-weight:700}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero__lead{font-size:1.12rem;color:var(--ink-2);max-width:560px}
.hero__stats{display:flex;gap:28px;margin:26px 0 28px;flex-wrap:wrap}
.hero__stats div{display:flex;flex-direction:column}
.hero__stats b{font-size:1.9rem;font-weight:800;color:var(--brand-d);line-height:1.1}
.hero__stats span{color:var(--ink-2);font-size:.9rem}
.hero__ctas{display:flex;gap:12px;flex-wrap:wrap}
.hero__img{margin-top:28px;height:280px;position:relative}
.hero__img .ph{width:100%;height:100%}
.hero__img .float{position:absolute;left:18px;bottom:18px;background:#fff;border-radius:12px;padding:10px 14px;box-shadow:var(--shadow);display:flex;gap:10px;align-items:center;font-size:.9rem;font-weight:600}
.hero__img .float b{color:var(--green);font-size:1.3rem}
.hero--page{padding:48px 0}
.hero--page .container{grid-template-columns:1fr;text-align:center}
.hero--page .hero__lead{margin:0 auto}
.hero--page .hero__ctas{justify-content:center}
.hero--page .hero__stats{justify-content:center}
.crumb{font-size:.85rem;color:var(--muted);margin-bottom:12px}
.crumb a{color:var(--muted)}

/* ---------- Dải tin cậy ---------- */
.trust{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust .container{display:grid;grid-template-columns:repeat(5,1fr);padding-top:28px;padding-bottom:28px}
.trust div{text-align:center;padding:8px 10px;border-right:1px solid var(--line)}
.trust div:last-child{border-right:0}
.trust b{display:block;font-size:2rem;font-weight:800;color:var(--brand);line-height:1.1}
.trust span{color:var(--ink-2);font-size:.9rem}

/* ---------- Khóa học ---------- */
.course{display:flex;flex-direction:column;position:relative}
.course .course__ico{width:52px;height:52px;border-radius:14px;background:var(--brand-l);display:grid;place-items:center;color:var(--brand);margin-bottom:14px}
.course .course__ico svg{width:26px;height:26px}
.course h3{font-size:1.1rem}
.course .check{margin:8px 0 16px;font-size:.92rem;flex:1}
.course .course__price{display:flex;align-items:baseline;gap:6px;flex-wrap:wrap;margin-bottom:14px;font-size:.9rem;color:var(--muted)}
.course .course__price b{color:var(--cta);font-size:1.25rem;font-weight:800}
.course .ribbon{position:absolute;top:-10px;right:18px;background:var(--cta);color:#fff;font-size:.75rem;font-weight:700;padding:4px 10px;border-radius:999px}
.course--hot{border-color:var(--brand);box-shadow:var(--shadow)}

/* ---------- Lý do chọn ---------- */
.why{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.why>div{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;display:flex;gap:14px;align-items:flex-start}
.why i{width:46px;height:46px;flex:none;border-radius:12px;background:var(--brand-l);color:var(--brand);display:grid;place-items:center}
.why svg{width:22px;height:22px}
.why h3{font-size:1rem;margin-bottom:4px}
.why p{margin:0;color:var(--ink-2);font-size:.9rem}

/* ---------- Phương pháp ---------- */
.method{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.method article{border-radius:var(--r-lg);overflow:hidden;background:#fff;border:1px solid var(--line);display:grid;grid-template-rows:220px auto}
.method .ph{border-radius:0;height:100%}
.method .body{padding:26px}
.method .body h3{font-size:1.3rem}
.method .body .badge{margin-bottom:10px}

/* ---------- Bậc thang band điểm ---------- */
.ladder{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;align-items:end;padding:20px 0 0;position:relative}
.ladder::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--line-2)}
.step{position:relative;display:flex;flex-direction:column;justify-content:flex-end;height:calc(130px + var(--h) * 42px);border-radius:14px 14px 0 0;padding:18px 14px 20px;color:#fff;background:linear-gradient(180deg,var(--brand),var(--brand-d));transition:.22s;cursor:default}
.step:nth-child(1){background:linear-gradient(180deg,#F4A3A3,#E86A6A)}
.step:nth-child(2){background:linear-gradient(180deg,#EF8686,#E04B4B)}
.step:nth-child(3){background:linear-gradient(180deg,#E96464,#D83030)}
.step:nth-child(4){background:linear-gradient(180deg,#DB1F1F,#C21818)}
.step:nth-child(5){background:linear-gradient(180deg,#C21818,#9D0B0F)}
.step:nth-child(6){background:linear-gradient(180deg,#FFCB2B,#FE9C2B)}
.step:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg)}
.step .step__lv{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;opacity:.85;font-weight:700}
.step .step__band{font-size:1.8rem;font-weight:800;line-height:1.1;margin:4px 0 6px}
.step .step__name{font-weight:700;font-size:.95rem}
.step .step__meta{font-size:.8rem;opacity:.9;margin-top:6px;border-top:1px solid rgba(255,255,255,.3);padding-top:6px}
.step .step__num{position:absolute;top:-14px;left:14px;width:28px;height:28px;border-radius:50%;background:#fff;color:var(--brand-d);display:grid;place-items:center;font-weight:800;font-size:.85rem;box-shadow:var(--shadow)}
.ladder-legend{display:flex;justify-content:space-between;color:var(--muted);font-size:.85rem;margin-top:12px;font-weight:500}

/* ---------- Giáo viên ---------- */
.avatar{width:84px;height:84px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;font-size:1.6rem;letter-spacing:-.02em;flex:none;background:linear-gradient(135deg,var(--a1,#DB1F1F),var(--a2,#9D0B0F))}
.avatar--sm{width:56px;height:56px;font-size:1.1rem}
.avatar--lg{width:110px;height:110px;font-size:2rem}
.teacher{text-align:center;display:flex;flex-direction:column;align-items:center}
.teacher .avatar{margin-bottom:14px}
.teacher h3{margin-bottom:2px}
.teacher .role{color:var(--muted);font-size:.88rem;margin-bottom:10px}
.teacher .band{display:inline-flex;gap:6px;align-items:baseline;background:var(--brand-l);color:var(--brand-d);border-radius:10px;padding:6px 12px;font-weight:700;margin-bottom:10px}
.teacher .band b{font-size:1.25rem}
.teacher p{font-size:.9rem;color:var(--ink-2);margin-bottom:14px;flex:1}
.skills{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;width:100%;margin:10px 0 14px}
.skills div{background:var(--bg-soft);border-radius:8px;padding:6px 4px;font-size:.75rem;color:var(--muted)}
.skills div b{display:block;color:var(--ink);font-size:.95rem}

/* ---------- Chứng chỉ IELTS giả lập ---------- */
.cert{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px 18px 18px 24px;position:relative;overflow:hidden;display:flex;gap:16px;align-items:center;transition:.2s}
.cert:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.cert::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:linear-gradient(180deg,var(--brand),var(--cta))}
.cert .cert__band{width:78px;height:78px;border-radius:14px;background:var(--brand-d);color:#fff;display:grid;place-items:center;flex:none;position:relative}
.cert .cert__band b{font-size:1.8rem;font-weight:800;line-height:1}
.cert .cert__band small{position:absolute;bottom:6px;left:0;right:0;text-align:center;font-size:.6rem;letter-spacing:.1em;opacity:.8}
.cert--gold .cert__band{background:linear-gradient(135deg,#F4B400,#C97E00)}
.cert .cert__info{flex:1;min-width:0}
.cert .cert__info h3{font-size:1rem;margin-bottom:2px}
.cert .cert__info p{margin:0;font-size:.82rem;color:var(--muted)}
.cert .cert__skills{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.cert .cert__skills span{background:var(--bg-soft);border-radius:6px;padding:2px 7px;font-size:.72rem;color:var(--ink-2);font-weight:600}
.cert .cert__stamp{position:absolute;right:-6px;top:-6px;width:56px;height:56px;border-radius:50%;border:2px dashed var(--gold);display:grid;place-items:center;font-size:.6rem;font-weight:800;color:#B07600;transform:rotate(14deg);background:#FFF8E5}
.rate{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.rate div{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;text-align:center}
.rate b{display:block;font-size:2.2rem;font-weight:800;color:var(--brand)}
.rate span{color:var(--ink-2);font-size:.9rem}
.section--brand .rate div{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2)}
.section--brand .rate b{color:var(--gold)}
.section--brand .rate span{color:#fff}

/* ---------- Cảm nhận ---------- */
.quote{display:flex;flex-direction:column}
.quote blockquote{margin:12px 0 18px;color:var(--ink-2);font-size:.97rem;flex:1;position:relative;padding-left:0}
.quote blockquote::before{content:"\201C";font-size:3rem;color:var(--brand-l);position:absolute;left:-6px;top:-22px;font-weight:800}
.quote .who{display:flex;gap:12px;align-items:center}
.quote .who b{display:block}
.quote .who span{font-size:.85rem;color:var(--muted)}

/* ---------- Truyền thông & đối tác ---------- */
.press{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.press div{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px}
.press .press__logo{font-weight:800;color:var(--brand-d);letter-spacing:-.02em;font-size:1.1rem;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.press .press__logo i{width:8px;height:8px;border-radius:2px;background:var(--cta)}
.press p{margin:0;color:var(--ink-2);font-size:.92rem;font-style:italic}
.partners{overflow:hidden;position:relative;padding:10px 0;mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.partners__track{display:flex;gap:16px;width:max-content;animation:slide 40s linear infinite}
.partners:hover .partners__track{animation-play-state:paused}
.partners__track span{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border:1px solid var(--line);border-radius:12px;background:#fff;font-weight:800;color:var(--ink-2);white-space:nowrap;letter-spacing:-.01em}
.partners__track span i{width:12px;height:12px;border-radius:3px;background:var(--brand-l);border:2px solid var(--brand)}
@keyframes slide{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.partners__track{animation:none;flex-wrap:wrap;width:auto;justify-content:center}}

/* ---------- Cơ sở ---------- */
.branch{display:flex;flex-direction:column;gap:6px;font-size:.92rem}
.branch h3{font-size:1.02rem;display:flex;align-items:center;gap:8px;margin-bottom:4px}
.branch h3 i{width:30px;height:30px;border-radius:8px;background:var(--brand);color:#fff;display:grid;place-items:center;font-style:normal;font-size:.85rem;font-weight:800;flex:none}
.branch p{margin:0;color:var(--ink-2)}
.branch .branch__links{display:flex;gap:10px;margin-top:8px;flex-wrap:wrap}

/* ---------- Bảng ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff}
table{width:100%;border-collapse:collapse;min-width:760px;font-size:.93rem}
th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
th{background:var(--brand-xl);color:var(--brand-d);font-weight:700;font-size:.85rem;text-transform:uppercase;letter-spacing:.04em}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:#FDF7F7}
td b{font-weight:700}
.tbl-compare th:first-child,.tbl-compare td:first-child{font-weight:700;color:var(--ink);background:#FDF7F7}
.tbl-compare td{text-align:center}
.tbl-compare td:first-child{text-align:left}
.tbl-compare .ok{color:var(--green);font-weight:800}

/* ---------- Bài viết ---------- */
.post{display:flex;flex-direction:column;overflow:hidden;padding:0}
.post .ph{height:190px;border-radius:0}
.post .body{padding:20px;display:flex;flex-direction:column;flex:1}
.post .meta{display:flex;gap:10px;align-items:center;font-size:.8rem;color:var(--muted);margin-bottom:8px}
.post h3{font-size:1.05rem}
.post p{color:var(--ink-2);font-size:.92rem;flex:1}
.post a.more{font-weight:700;font-size:.92rem}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 20px}
.faq summary{cursor:pointer;font-weight:700;padding:16px 36px 16px 0;position:relative;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:12px;width:26px;height:26px;border-radius:50%;background:var(--brand-l);color:var(--brand);display:grid;place-items:center;font-weight:800}
.faq details[open] summary::after{content:"−"}
.faq details p{color:var(--ink-2);margin:0 0 16px}

/* ---------- Chip lọc & bộ lọc ---------- */
.chips{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:28px}
.chip{padding:8px 16px;border-radius:999px;border:1px solid var(--line-2);background:#fff;font-weight:600;font-size:.9rem;cursor:pointer;transition:.15s}
.chip:hover{border-color:var(--brand)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
.filters{display:grid;grid-template-columns:repeat(3,1fr) auto;gap:14px;align-items:end;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:22px}
.filters .field{margin:0}
.filters .count{font-size:.9rem;color:var(--muted);font-weight:600;padding-bottom:12px}
.empty{text-align:center;color:var(--muted);padding:30px}
.status{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:.82rem;white-space:nowrap}
.status::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor}
.status--ok{color:var(--green)}.status--warn{color:#D97706}.status--full{color:#B42318}

/* ---------- Trang khóa học chi tiết ---------- */
.course-detail{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;padding:56px 0;border-bottom:1px solid var(--line)}
.course-detail:last-of-type{border-bottom:0}
.course-detail.rev .course-detail__img{order:2}
.course-detail .ph{height:360px}
.course-detail .spec{display:grid;grid-template-columns:1fr 1fr;gap:10px 18px;margin:18px 0;font-size:.92rem}
.course-detail .spec div{background:var(--bg-soft);border-radius:10px;padding:10px 14px}
.course-detail .spec span{display:block;color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.05em}
.course-detail .spec b{color:var(--ink)}
.course-detail .promise{display:flex;gap:10px;align-items:flex-start;background:#E6F7EC;border-left:4px solid var(--green);border-radius:10px;padding:12px 14px;font-size:.92rem;color:#14532D;margin-bottom:18px}
.course-detail .pricing{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-bottom:18px}
.course-detail .pricing .badge--cta{font-size:.8rem}

/* ---------- Quy trình bước ---------- */
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px;counter-reset:s}
.steps div{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 18px;position:relative;counter-increment:s}
.steps div::before{content:counter(s,decimal-leading-zero);display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--brand);color:#fff;font-weight:800;margin-bottom:12px}
.steps h3{font-size:1rem}
.steps p{margin:0;font-size:.88rem;color:var(--ink-2)}

/* ---------- Test trắc nghiệm ---------- */
.quiz{max-width:820px;margin:0 auto}
.q{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;margin-bottom:14px}
.q h3{font-size:1rem;margin-bottom:12px;display:flex;gap:10px}
.q h3 span{color:var(--brand);flex:none}
.q .opts{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.q label{display:flex;gap:10px;align-items:center;padding:10px 12px;border:1px solid var(--line);border-radius:10px;cursor:pointer;font-size:.93rem}
.q label:hover{border-color:var(--brand)}
.q input{accent-color:var(--brand)}
.q.is-right{border-color:var(--green);background:#F3FBF6}.q.is-wrong{border-color:#F08080;background:#FFF7F7}
.result{background:linear-gradient(135deg,var(--brand-d),var(--brand));color:#fff;border-radius:var(--r-lg);padding:30px;text-align:center;margin-top:20px}
.result b.score{font-size:3rem;font-weight:800;display:block;color:var(--gold);line-height:1.1}
.result .btn{margin-top:14px}
.result[hidden]{display:none}
.feat{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.feat div{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;text-align:center}
.feat b{display:block;font-size:1.05rem;margin:8px 0 4px}
.feat i{width:48px;height:48px;border-radius:50%;background:var(--brand-l);color:var(--brand);display:inline-grid;place-items:center;font-style:normal;font-weight:800}
.feat p{margin:0;font-size:.88rem;color:var(--ink-2)}

/* ---------- Kiến thức + sidebar ---------- */
.with-side{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:start}
.side{display:flex;flex-direction:column;gap:20px;position:sticky;top:130px}
.side .card{padding:22px}
.side h3{font-size:1.05rem;margin-bottom:12px}
.dl{display:flex;flex-direction:column;gap:10px}
.dl a{display:flex;gap:12px;align-items:center;padding:10px;border:1px solid var(--line);border-radius:10px;color:var(--ink);text-decoration:none!important;font-size:.9rem}
.dl a:hover{border-color:var(--brand);background:var(--brand-xl)}
.dl a i{width:36px;height:36px;border-radius:8px;background:#FDE8E8;color:#B42318;display:grid;place-items:center;font-style:normal;font-size:.65rem;font-weight:800;flex:none}
.dl a small{display:block;color:var(--muted);font-size:.78rem}

/* ---------- Câu chuyện dài ---------- */
.story{display:grid;grid-template-columns:140px 1fr;gap:24px;align-items:start}
.story .story__meta{text-align:center}
.story .story__meta .avatar{margin:0 auto 10px}
.story .story__meta b{display:block}
.story .story__meta span{font-size:.85rem;color:var(--muted)}
.story .story__meta .badge{margin-top:8px}
.story p{color:var(--ink-2);font-size:.95rem}

/* ---------- Liên hệ ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.policy details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 18px;margin-bottom:10px}
.policy summary{padding:14px 0;font-weight:700;cursor:pointer}
.policy p{color:var(--ink-2);margin:0 0 14px;font-size:.93rem}
.social{display:flex;gap:12px;flex-wrap:wrap}
.social a{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border:1px solid var(--line);border-radius:10px;color:var(--ink);font-weight:600;text-decoration:none!important;background:#fff}
.social a:hover{border-color:var(--brand);color:var(--brand)}
.social a i{width:10px;height:10px;border-radius:50%;background:var(--brand)}
.map-ph{height:220px;border-radius:var(--r);background:repeating-linear-gradient(45deg,#E6EEFC 0 12px,#EEF3FD 12px 24px);display:grid;place-items:center;color:var(--brand-d);font-weight:700;border:1px solid var(--line)}

/* ---------- Footer ---------- */
.footer{background:#0F1E3C;color:#E3CFCF;padding:56px 0 24px;font-size:.92rem}
.footer a{color:#E3CFCF}
.footer a:hover{color:#fff}
.footer .grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer h4{color:#fff;font-size:1rem;margin-bottom:14px}
.footer li{margin-bottom:8px}
.footer .logo{color:#fff;margin-bottom:12px}
.footer p{color:#C4A3A3}
.footer .bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:18px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.85rem;color:#C4A3A3}
.footer .btn--cta{margin-top:6px}

/* ---------- Responsive ---------- */
@media (max-width:1400px){
  .nav>li>a{padding:10px 7px;font-size:.86rem}
  .hotline{display:none}
  .header .btn--cta{padding:9px 14px;font-size:.9rem}
  .header .container{gap:14px}
}
@media (max-width:1100px){
  .g4,.why,.rate,.feat{grid-template-columns:repeat(2,1fr)}
  .g5,.g6{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .trust .container{grid-template-columns:repeat(3,1fr)}
  .trust div:nth-child(3){border-right:0}
  .filters{grid-template-columns:1fr 1fr}
  .hero .container{grid-template-columns:1fr 1fr}
}
@media (max-width:980px){
  .burger{display:block;margin-left:auto}
  .hotline{display:none}
  .header .btn--cta{display:none}
  .nav{position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;align-items:stretch;padding:12px 20px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);display:none;margin:0}
  .nav.is-open{display:flex}
  .nav>li>a{padding:12px 10px;font-size:1rem}
  .nav .caret{display:none}
  .sub{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;padding:0 0 6px 14px;min-width:0}
  .nav li.nav__cta{display:block;margin-top:8px}
  .nav li.nav__cta a{background:var(--cta);color:#fff;justify-content:center;border-radius:10px}
  .hero .container{grid-template-columns:1fr}
  .hero__img{height:220px}
  .g3{grid-template-columns:repeat(2,1fr)}
  .press{grid-template-columns:repeat(2,1fr)}
  .method,.course-detail,.consult--wide,.with-side,.contact-grid{grid-template-columns:1fr}
  .course-detail.rev .course-detail__img{order:0}
  .course-detail .ph{height:260px}
  .side{position:static}
  .footer .grid{grid-template-columns:1fr 1fr}
  .ladder{grid-template-columns:repeat(3,1fr);gap:30px 14px}
  .ladder::after{display:none}
  .step{height:calc(110px + var(--h) * 22px);border-radius:14px}
  .section{padding:56px 0}
}
@media (max-width:640px){
  body{font-size:15px}
  .promo .container{font-size:.8rem;gap:8px;padding-right:40px}
  .promo__link{display:none}
  .g2,.g3,.g4,.g5,.g6,.why,.rate,.feat,.press,.steps,.filters{grid-template-columns:1fr}
  .trust .container{grid-template-columns:repeat(2,1fr)}
  .trust div{border-right:0;border-bottom:1px solid var(--line)}
  .trust div:last-child{border-bottom:0;grid-column:1/-1}
  .hero__stats{gap:18px}
  .hero__stats b{font-size:1.5rem}
  .hero__ctas .btn{flex:1 1 calc(50% - 6px);padding:12px 10px;font-size:.9rem}
  .ladder{grid-template-columns:repeat(2,1fr)}
  .field-row{grid-template-columns:1fr}
  .consult{padding:22px}
  .consult--wide{padding:22px}
  .q .opts{grid-template-columns:1fr}
  .story{grid-template-columns:1fr}
  .story .story__meta{display:flex;gap:14px;align-items:center;text-align:left}
  .story .story__meta .avatar{margin:0}
  .footer .grid{grid-template-columns:1fr}
  .fab span{display:none}
  .fab{padding:12px}
  .section{padding:44px 0}
  .sec-head{margin-bottom:28px}
}