/* ====== Gam màu nâu – vàng gold (sửa màu ở đây) ====== */
:root{
  --bg:#140d09; --bg-2:#1c130d; --bg-3:#251a12; --card:#2a1d14;
  --gold:#c9a24b; --gold-light:#ecd08a; --gold-dark:#8a6420;
  --ink:#f3e9d8; --muted:#bfae93; --line:rgba(201,162,75,.22);
  --cream:#f7efe0; --brown-ink:#2a1b10;
  --grad-gold:linear-gradient(135deg,#a97c2b 0%,#ecd08a 45%,#c9a24b 100%);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Open Sans",sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 16px}
section{padding:72px 0}
h1,h2,h3,.title,.logo b{font-family:"Playfair Display",Georgia,serif}
.title{color:var(--gold-light);text-align:center;font-weight:700;font-size:clamp(26px,3.4vw,38px);line-height:1.25;margin-bottom:14px;position:relative}
.title:after{content:"";display:block;width:76px;height:2px;margin:14px auto 0;background:var(--grad-gold)}
.sub{text-align:center;color:var(--muted);margin-bottom:38px}
.btn{display:inline-block;background:var(--grad-gold);color:#241506;font-weight:700;letter-spacing:.4px;padding:13px 30px;border-radius:2px;border:0;cursor:pointer;font-size:15px;text-transform:uppercase;transition:.25s;box-shadow:0 6px 20px rgba(201,162,75,.25)}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(201,162,75,.4);filter:brightness(1.08)}
.btn-yellow{background:var(--grad-gold);color:#241506}
.ph{background:repeating-linear-gradient(45deg,#2a1d14,#2a1d14 12px,#33231a 12px,#33231a 24px);color:var(--gold);display:flex;align-items:center;justify-content:center;text-align:center;font-size:13px;font-weight:600;border-radius:6px;padding:10px}

/* ===== HEADER ===== */
header{position:sticky;top:0;z-index:50;background:rgba(20,13,9,.94);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:78px;gap:16px}
.logo{display:flex;align-items:center;gap:12px}
.logo-img{width:54px;height:auto}
.logo b{display:block;color:var(--gold-light);font-size:17px;line-height:1.2;font-weight:700}
.logo small{color:var(--muted);font-size:12px;letter-spacing:.5px}
.menu{display:flex;gap:30px;font-weight:600;font-size:14px;text-transform:uppercase;letter-spacing:.6px}
.menu a{color:var(--ink);padding:6px 0;border-bottom:2px solid transparent}
.menu a:hover{color:var(--gold-light);border-color:var(--gold)}
.nav-phone{background:var(--grad-gold);color:#241506;font-weight:800;padding:10px 20px;border-radius:2px;white-space:nowrap}
.burger{display:none;background:none;border:1px solid var(--line);font-size:24px;color:var(--gold-light);cursor:pointer;padding:2px 10px}

/* ===== HERO ===== */
.hero{background:linear-gradient(180deg,rgba(20,13,9,.62),rgba(20,13,9,.93) 100%),url(/assets/img/san-tap-1-960.jpg) center/cover no-repeat,var(--bg);color:var(--ink);padding:70px 0 80px;position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center}
.hero small.kicker{font-size:14px;text-transform:uppercase;letter-spacing:4px;color:var(--gold)}
.hero h1{font-size:clamp(32px,5vw,56px);font-weight:800;line-height:1.15;margin:8px 0 22px;color:var(--cream)}
.hero h1:first-letter{color:var(--gold-light)}
.hero ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px 22px;margin-bottom:30px;font-size:15px;color:var(--muted)}
.hero li{padding-left:26px;position:relative}
.hero li:before{content:"◆";position:absolute;left:0;color:var(--gold);font-size:12px;top:5px}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.hero-cta .tel{font-size:22px;font-weight:700;color:var(--gold-light)}
.hero-card{background:linear-gradient(160deg,rgba(42,29,20,.92),rgba(20,13,9,.92));border:1px solid var(--gold);border-radius:4px;padding:34px;box-shadow:0 20px 50px rgba(0,0,0,.5),inset 0 0 0 4px rgba(201,162,75,.08)}
.hero-card h2{font-size:28px;margin-bottom:10px;color:var(--gold-light)}
.hero-card p{margin-bottom:22px;color:var(--muted)}

/* ===== KHÓA HỌC ===== */
.courses{background:var(--bg-2)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.course{background:linear-gradient(180deg,var(--card),var(--bg-3));border:1px solid var(--line);border-radius:4px;overflow:hidden;display:flex;flex-direction:column;transition:.25s}
.course:hover{border-color:var(--gold);transform:translateY(-4px);box-shadow:0 14px 34px rgba(0,0,0,.45)}
.course h3{background:var(--grad-gold);color:#241506;text-align:center;font-size:21px;font-weight:700;padding:15px;letter-spacing:.5px}
.course ul{list-style:none;padding:22px 24px;flex:1}
.course li{padding:8px 0 8px 22px;position:relative;font-size:15px;border-bottom:1px dashed var(--line);color:var(--muted)}
.course li:before{content:"◆";position:absolute;left:0;color:var(--gold);font-size:11px;top:12px}
.course li.total{border-bottom:0;font-size:16px;color:var(--ink)}
.course li.total b{color:var(--gold-light);font-size:19px}
.course .btn{margin:0 24px 24px;text-align:center;display:block}

/* ===== VÌ SAO ===== */
.why .item{text-align:center;padding:10px}
.circle{width:128px;height:128px;margin:0 auto 20px;border-radius:50%;background:radial-gradient(circle at 30% 30%,#4a3220,#1c130d);border:2px solid var(--gold);display:flex;align-items:center;justify-content:center;font-size:48px;box-shadow:0 0 0 6px rgba(201,162,75,.1),0 12px 28px rgba(0,0,0,.5)}
.why h3{color:var(--gold-light);font-size:20px;margin-bottom:8px}
.why p{color:var(--muted);font-size:15px}

/* ===== KHU VỰC ===== */
.areas{padding-top:0}
.area-list{display:grid;grid-template-columns:repeat(4,1fr);gap:14px 20px;max-width:900px;margin:0 auto}
.area-list span{display:flex;align-items:center;gap:8px;font-weight:600;color:var(--muted)}
.area-list span:before{content:"📍"}

/* ===== LỘ TRÌNH ===== */
.roadmap{background:var(--bg-2)}
.roadmap .wrap{display:grid;grid-template-columns:1fr;gap:32px}
.step{border:1px solid var(--line);border-radius:4px;overflow:hidden;margin-bottom:16px;background:var(--card)}
.step h3{background:rgba(201,162,75,.12);color:var(--gold-light);text-align:center;font-size:22px;padding:12px;border-bottom:1px solid var(--line)}
.step ul{list-style:none;padding:16px 22px;font-size:15px;color:var(--muted)}
.step li{padding:4px 0 4px 24px;position:relative}
.step li:before{content:"◆";position:absolute;left:0;color:var(--gold);font-size:11px;top:9px}
.arrow{text-align:center;color:var(--gold);font-size:20px;margin:-6px 0 10px}

/* ===== ĐỘI NGŨ ===== */
.team{background:linear-gradient(180deg,#2a1b10,#1a110b)}
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;justify-content:center}
.member{background:var(--card);border:1px solid var(--line);border-radius:4px;text-align:center;padding-bottom:20px}
.avatar{width:96px;height:96px;border-radius:50%;background:var(--grad-gold);color:#241506;font-family:"Playfair Display",serif;font-size:42px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:24px auto 0;box-shadow:0 0 0 5px rgba(201,162,75,.15)}
.member b{display:block;color:var(--gold-light);margin-top:14px;font-size:18px;font-family:"Playfair Display",serif}
.member small{display:block;color:var(--muted);padding:4px 14px 0}

/* ===== CẢM NHẬN + FAQ ===== */
.reviews{background:var(--bg-2)}
.rv{background:var(--card);border:1px solid var(--line);border-radius:4px;padding:28px 26px;position:relative}
.rv:before{content:"“";position:absolute;top:-4px;left:18px;font-size:76px;color:var(--gold);opacity:.4;font-family:Georgia,serif}
.rv p{font-style:italic;margin:14px 0;color:var(--ink)}
.rv .who b{color:var(--gold-light)}
.rv .who small{color:var(--muted)}
.faq-wrap{max-width:820px;margin:0 auto}
.faq{background:var(--card);border:1px solid var(--line);border-radius:4px;padding:16px 20px;margin-bottom:10px}
.faq summary{font-weight:700;color:var(--gold-light);cursor:pointer}
.faq p{margin-top:10px;color:var(--muted)}

/* ===== CAM KẾT + FORM ===== */
.commit .wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.commit .title{color:var(--gold-light)}
.cm{display:flex;gap:16px;margin-bottom:24px}
.cm .n{font-family:"Playfair Display",serif;font-size:38px;font-weight:800;color:var(--gold);line-height:1;flex:none;width:60px}
.cm h3{font-size:19px;margin-bottom:4px;color:var(--cream)}
.cm p{color:var(--muted);font-size:15px}
.offer{background:linear-gradient(160deg,#33231a,#1a110b);border:1px solid var(--gold);border-radius:4px;padding:30px;box-shadow:0 18px 44px rgba(0,0,0,.55),inset 0 0 0 4px rgba(201,162,75,.08)}
.offer h3{text-transform:uppercase;font-size:19px;text-align:center;letter-spacing:1px;color:var(--gold-light);margin-bottom:16px}
.offer .big{font-size:clamp(34px,5vw,46px);font-weight:800;color:var(--gold-light);text-align:center;line-height:1.1;margin:4px 0 6px}
.offer .note{text-align:center;font-size:14px;margin-bottom:18px;color:var(--muted)}
.offer form{display:grid;gap:12px}
.offer input,.offer select{width:100%;padding:13px 16px;border-radius:2px;border:1px solid var(--line);background:#120b07;color:var(--ink);font:inherit;font-size:15px}
.offer input:focus,.offer select:focus{outline:2px solid var(--gold);border-color:var(--gold)}
.offer input::placeholder{color:#8f7f66}
.offer .btn{width:100%;font-size:16px}
.form-msg{display:none;text-align:center;background:rgba(201,162,75,.14);color:var(--gold-light);border:1px solid var(--gold);border-radius:2px;padding:12px;font-weight:700}
.form-msg.err{background:rgba(160,40,30,.2);color:#ffb4a8;border-color:#a0281e}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.agree{display:flex;gap:8px;align-items:flex-start;font-size:13px;color:var(--muted)}
.agree input{width:auto;margin-top:3px}
.cta-band{background:var(--grad-gold);text-align:center;padding:28px 16px;font-family:"Playfair Display",serif;font-weight:700;color:#241506;font-size:clamp(18px,2.6vw,26px)}

/* ===== TRANG CON ===== */
.page-head{background:linear-gradient(180deg,rgba(20,13,9,.35),var(--bg)),url(/assets/img/hero-car.svg) center/cover no-repeat,#2a1b10;padding:52px 0;border-bottom:1px solid var(--line)}
.page-head h1{font-size:clamp(28px,4vw,42px);margin:8px 0 10px;color:var(--cream)}
.page-head p{color:var(--muted);max-width:720px}
.crumb{font-size:14px;color:var(--muted)}
.crumb a:hover{color:var(--gold-light)}
.fees{width:100%;max-width:520px;border-collapse:collapse;background:var(--card);border:1px solid var(--line)}
.fees th,.fees td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
.fees th:last-child,.fees td:last-child{text-align:right;white-space:nowrap}
.fees thead th{background:var(--grad-gold);color:#241506}
.fees tfoot td{font-weight:800;color:var(--gold-light);border-bottom:0;font-size:17px}

/* ===== FOOTER ===== */
footer{background:#0d0805;color:var(--muted);padding:56px 0 100px;font-size:15px;border-top:2px solid var(--gold-dark)}
footer .wrap{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:30px}
footer h4{color:var(--gold-light);margin-bottom:12px;text-transform:uppercase;font-size:14px;letter-spacing:1px}
footer p{margin-bottom:6px}
footer a:hover{color:var(--gold-light)}
footer .copy{grid-column:1/-1;border-top:1px solid var(--line);padding-top:18px;text-align:center;font-size:13px;color:#8f7f66}

/* ===== NÚT NỔI ===== */
.float-call{position:fixed;left:16px;bottom:18px;z-index:60;display:flex;align-items:center;background:var(--grad-gold);color:#241506;border-radius:40px;padding:6px 18px 6px 6px;font-weight:800;box-shadow:0 6px 18px rgba(0,0,0,.45)}
.float-call i{width:42px;height:42px;border-radius:50%;background:#241506;color:var(--gold-light);display:flex;align-items:center;justify-content:center;font-style:normal;font-size:19px;margin-right:10px;animation:ring 1.4s infinite}
.float-zalo{position:fixed;right:16px;bottom:18px;z-index:60;width:56px;height:56px;border-radius:50%;background:#0068ff;color:#fff;font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(0,0,0,.45)}
@keyframes ring{0%,100%{transform:rotate(0)}10%,30%{transform:rotate(-15deg)}20%,40%{transform:rotate(15deg)}50%{transform:rotate(0)}}

/* ===== RESPONSIVE ===== */
@media (max-width:900px){
  .menu{display:none;position:absolute;top:78px;left:0;right:0;background:#140d09;flex-direction:column;gap:0;border-bottom:1px solid var(--line)}
  .menu.open{display:flex}.menu a{padding:15px 16px;border-top:1px solid var(--line)}
  .burger{display:block}.nav-phone{display:none}
  .hero .wrap,.commit .wrap{grid-template-columns:1fr}
  .grid3{grid-template-columns:1fr}
  .team-grid{grid-template-columns:1fr 1fr}
  .area-list{grid-template-columns:1fr 1fr}
  footer .wrap{grid-template-columns:1fr}
}
@media (max-width:520px){
  section{padding:52px 0}
  .hero{padding:44px 0 56px}
  .hero ul{grid-template-columns:1fr}
  .team-grid{gap:12px}
  .logo small{display:none}
}

/* ===== THƯ VIỆN ẢNH ===== */
.gallery{background:var(--bg-2)}
.gal{display:grid;grid-template-columns:1.2fr 1fr;gap:18px}
.gal figure{position:relative;border:1px solid var(--gold-dark);border-radius:4px;overflow:hidden;background:var(--card)}
.gal img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .5s}
.gal figure:hover img{transform:scale(1.04)}
.gal figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 12px;background:linear-gradient(transparent,rgba(20,13,9,.92));color:var(--gold-light);font-size:14px;letter-spacing:.4px}
@media (max-width:900px){.gal{grid-template-columns:1fr}}

/* ===== ĐIỂM KHÁC BIỆT + KHÓA NỔI BẬT ===== */
.edge{background:linear-gradient(180deg,#1c130d,#140d09)}
.edge-item{background:linear-gradient(160deg,var(--card),var(--bg-3));border:1px solid var(--line);border-top:3px solid var(--gold);padding:30px 26px;border-radius:4px;text-align:center}
.edge-item .num{font-family:"Playfair Display",serif;font-size:34px;font-weight:800;color:var(--gold);margin-bottom:6px}
.edge-item h3{color:var(--gold-light);font-size:20px;margin-bottom:8px}
.edge-item p{color:var(--muted);font-size:15px}
.course.featured{border:1px solid var(--gold);box-shadow:0 0 0 3px rgba(201,162,75,.18),0 14px 34px rgba(0,0,0,.45);position:relative}
.course.featured:before{content:"NỔI BẬT";position:absolute;top:12px;right:-34px;transform:rotate(38deg);background:#241506;color:var(--gold-light);font-size:11px;font-weight:800;letter-spacing:1.5px;padding:3px 40px;z-index:2}
.course.featured{overflow:hidden}

/* ===== ẢNH CO GIÃN + XEM PHÓNG TO ===== */
@media (min-width:901px){.hero{background-image:linear-gradient(180deg,rgba(20,13,9,.62),rgba(20,13,9,.93) 100%),url(/assets/img/san-tap-1-1600.jpg)}}
img{height:auto}
.gal img{aspect-ratio:4/3;height:auto}
.gal-one{grid-template-columns:minmax(0,760px);justify-content:center}
.garage{background:linear-gradient(180deg,#140d09,#1c130d)}
.zoom-tip{float:right;opacity:.8;font-size:12px}
.lb{position:fixed;inset:0;z-index:200;background:rgba(10,6,3,.96);display:flex;flex-direction:column}
.lb[hidden]{display:none}
.lb-stage{flex:1;min-height:0;overflow:hidden;touch-action:none;display:flex;align-items:center;justify-content:center;cursor:grab}
.lb-stage img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;transform-origin:center;user-select:none;-webkit-user-drag:none;will-change:transform}
.lb-cap{color:var(--gold-light);text-align:center;padding:10px 16px 2px;font-size:15px}
.lb-hint{color:var(--muted);text-align:center;padding:0 16px 14px;font-size:12px}
.lb button{position:absolute;z-index:3;background:rgba(36,21,6,.85);color:var(--gold-light);border:1px solid var(--gold);width:46px;height:46px;font-size:28px;line-height:1;cursor:pointer;border-radius:50%}
.lb-x{top:14px;right:14px}.lb-p{left:12px;top:50%}.lb-n{right:12px;top:50%}
html.lb-open{overflow:hidden}
@media (max-width:520px){.zoom-tip{display:none}.lb-p,.lb-n{top:auto;bottom:70px}}

/* ===== THÔNG BÁO COOKIE + TRANG CHÍNH SÁCH ===== */
.cookie-bar{position:fixed;left:0;right:0;bottom:0;z-index:150;background:rgba(20,13,9,.97);border-top:1px solid var(--gold);padding:14px 16px;display:flex;gap:16px;align-items:center;justify-content:center;flex-wrap:wrap;box-shadow:0 -8px 24px rgba(0,0,0,.5)}
.cookie-bar p{max-width:760px;font-size:14px;color:var(--muted)}
.cookie-bar a{color:var(--gold-light);text-decoration:underline}
.cookie-btns{display:flex;gap:10px}
.cookie-btns button{font:inherit;font-weight:700;font-size:14px;padding:9px 20px;border-radius:2px;cursor:pointer;border:1px solid var(--gold);background:transparent;color:var(--gold-light)}
.cookie-btns .ck-ok{background:var(--grad-gold);color:#241506}
.prose{max-width:820px}
.prose h2{color:var(--gold-light);font-size:22px;margin:26px 0 8px}
.prose p{color:var(--muted);margin-bottom:10px}
.prose a{color:var(--gold-light);text-decoration:underline}
@media (max-width:520px){.cookie-bar{bottom:0;padding-bottom:78px}}

.form-note{font-size:13px;color:var(--muted);text-align:center}
.form-note a{color:var(--gold-light);text-decoration:underline}