:root{
  --paper:#e9e9ec;--paper-2:#dedee2;--ink:#0a0a0c;--muted:#56565d;--muted-2:#8a8a92;
  --line:rgba(0,0,0,.12);--glass:rgba(255,255,255,.45);--glass-2:rgba(255,255,255,.62);
  --radius:20px;--maxw:1200px;--ease:cubic-bezier(.16,1,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Manrope',-apple-system,sans-serif;background:var(--paper);color:var(--ink);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;font-weight:300}
::selection{background:var(--ink);color:#fff}
img{display:block;max-width:100%}
a{color:inherit}
.dt{font-family:'Archivo',sans-serif;font-weight:800;text-transform:uppercase;letter-spacing:-.5px;line-height:.95;font-style:normal}

.light-floor{position:fixed;inset:0;z-index:-2;pointer-events:none;overflow:hidden;background:radial-gradient(130% 82% at 50% 126%, rgba(0,0,0,.96) 0%, rgba(10,10,14,.6) 24%, rgba(55,55,65,.16) 46%, transparent 64%)}
.light-floor::before{content:'';position:absolute;left:-25%;right:-25%;bottom:-32%;height:85%;mix-blend-mode:multiply;
  background:radial-gradient(46% 62% at 50% 100%, rgba(0,0,0,.82), transparent 70%);
  animation:drift 16s ease-in-out infinite}
.light-floor::after{content:'';position:absolute;left:-25%;right:-25%;bottom:-28%;height:78%;mix-blend-mode:multiply;
  background:radial-gradient(42% 56% at 50% 100%, rgba(30,24,50,.5), transparent 68%);
  animation:drift2 22s ease-in-out infinite}
@keyframes drift{0%,100%{transform:translateX(-12%) scale(1)}50%{transform:translateX(12%) scale(1.08)}}
@keyframes drift2{0%,100%{transform:translateX(15%) scale(1.05)}50%{transform:translateX(-15%) scale(.95)}}
.grain{position:fixed;inset:0;z-index:-1;opacity:.05;pointer-events:none;mix-blend-mode:multiply;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}

header{position:fixed;top:18px;left:0;right:0;z-index:100;transition:.5s var(--ease)}
.nav{display:flex;align-items:center;justify-content:space-between;max-width:var(--maxw);margin:0 auto;padding:12px 20px;background:var(--glass);backdrop-filter:blur(30px) saturate(180%);-webkit-backdrop-filter:blur(30px) saturate(180%);border:1px solid rgba(255,255,255,.6);border-radius:40px;box-shadow:0 1px 0 rgba(255,255,255,.9) inset,0 16px 40px rgba(0,0,0,.12)}
.logo{display:flex;align-items:center;text-decoration:none}
.logo img{height:22px;width:auto}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{color:var(--muted);text-decoration:none;font-size:.82rem;font-weight:500;letter-spacing:.3px;text-transform:uppercase;transition:.3s}
.nav-links a:hover{color:var(--ink)}
.nav-cta{padding:9px 20px;border-radius:30px;color:#fff!important;background:var(--ink);border:1px solid var(--ink);transition:.35s var(--ease)!important}
.nav-cta:hover{opacity:.85}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px}
.burger span{width:22px;height:1.5px;background:var(--ink);transition:.3s;border-radius:2px}

.btn{display:inline-flex;align-items:center;gap:9px;padding:15px 28px;border-radius:40px;font-size:.78rem;font-weight:700;text-decoration:none;cursor:pointer;border:none;transition:.4s var(--ease);letter-spacing:.6px;text-transform:uppercase;font-family:'Archivo',sans-serif}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(0,0,0,.3)}
.btn-glass{background:var(--glass-2);border:1px solid rgba(255,255,255,.7);color:var(--ink);backdrop-filter:blur(14px);box-shadow:0 1px 0 rgba(255,255,255,.8) inset}
.btn-glass:hover{background:#fff;transform:translateY(-2px)}

.hero{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;padding:150px 0 90px}
.eyebrow{display:inline-block;font-size:.68rem;letter-spacing:3px;text-transform:uppercase;color:var(--muted);margin-bottom:26px;padding:8px 18px;border:1px solid var(--line);border-radius:40px;background:var(--glass);backdrop-filter:blur(10px);font-weight:600}
.hero h1{font-size:clamp(3rem,8vw,6.2rem)}
.hero h1 .out{-webkit-text-stroke:1.5px var(--ink);color:transparent}
.hero p{color:var(--muted);font-size:clamp(1rem,2vw,1.12rem);max-width:480px;margin:28px 0 38px;font-weight:300}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.hero-visual{position:relative;height:560px;display:flex;align-items:center;justify-content:center}
.portrait-wrap{position:relative;width:100%;height:100%;border-radius:24px;overflow:hidden;border:1px solid rgba(255,255,255,.6);background:var(--paper-2);box-shadow:0 1px 0 rgba(255,255,255,.9) inset,0 40px 80px rgba(0,0,0,.25)}
.portrait-wrap img{width:100%;height:100%;object-fit:cover;object-position:center 30%;mix-blend-mode:multiply;filter:grayscale(1) contrast(1.05)}
.portrait-wrap::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.4),transparent 45%)}
.pt-tag{position:absolute;left:22px;bottom:20px;z-index:2;color:#fff}
.pt-tag .n{font-family:'Archivo';font-weight:800;font-size:1.4rem;text-transform:uppercase;letter-spacing:.5px}
.pt-tag .r{font-size:.78rem;opacity:.85;font-weight:300}

.sec{padding:120px 0}
.sec-head{max-width:660px;margin-bottom:56px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-tag{font-size:.68rem;letter-spacing:3px;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:16px;font-weight:600}
.sec-head h2{font-size:clamp(2.2rem,5vw,3.6rem)}
.sec-head p{color:var(--muted);margin-top:16px;font-weight:300}

.courses{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ccard{position:relative;border-radius:var(--radius);overflow:hidden;text-decoration:none;color:inherit;display:block;aspect-ratio:3/4;border:1px solid rgba(255,255,255,.5);transition:.55s var(--ease);box-shadow:0 1px 0 rgba(255,255,255,.7) inset,0 18px 40px rgba(0,0,0,.18)}
.ccard img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:.7s var(--ease);z-index:0}
.ccard .veil{position:absolute;inset:0;z-index:1;background:linear-gradient(to top,rgba(0,0,0,.82) 0%,rgba(0,0,0,.25) 45%,transparent 75%);transition:.5s}
.ccard .glass-bar{position:absolute;left:14px;right:14px;bottom:14px;z-index:2;padding:18px 20px;border-radius:16px;background:rgba(255,255,255,.12);backdrop-filter:blur(18px) saturate(160%);-webkit-backdrop-filter:blur(18px) saturate(160%);border:1px solid rgba(255,255,255,.25);box-shadow:0 1px 0 rgba(255,255,255,.3) inset;color:#fff;transition:.5s var(--ease)}
.ccard .cc-no{font-size:.66rem;letter-spacing:2px;text-transform:uppercase;opacity:.8;margin-bottom:6px}
.ccard h3{font-family:'Archivo';font-weight:800;text-transform:uppercase;font-size:1.5rem;letter-spacing:-.3px;line-height:1}
.ccard .row{display:flex;justify-content:space-between;align-items:flex-end;margin-top:12px}
.ccard .pr{font-weight:700;font-size:1.05rem}
.ccard .pr small{font-weight:300;opacity:.8;font-size:.72rem}
.ccard .go{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.4);display:flex;align-items:center;justify-content:center;transition:.4s var(--ease)}
.ccard:hover{transform:translateY(-8px)}
.ccard:hover img{transform:scale(1.07)}
.ccard:hover .go{background:#fff;color:#000;transform:rotate(-45deg)}

.gallery{columns:3;column-gap:16px}
.gitem{position:relative;margin-bottom:16px;border-radius:16px;overflow:hidden;break-inside:avoid;cursor:pointer;border:1px solid rgba(255,255,255,.5)}
.gitem img{width:100%;transition:.7s var(--ease)}
.gitem::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.5),transparent 55%);opacity:0;transition:.5s}
.gitem .cap{position:absolute;left:16px;bottom:14px;z-index:2;opacity:0;transform:translateY(10px);transition:.5s var(--ease);color:#fff}
.gitem .cap span{font-family:'Archivo';font-weight:700;text-transform:uppercase;font-size:.95rem;letter-spacing:.3px}
.gitem:hover img{transform:scale(1.06)}
.gitem:hover::after{opacity:1}
.gitem:hover .cap{opacity:1;transform:none}

.skills{display:flex;flex-wrap:wrap;gap:10px}
.skill{padding:9px 17px;border-radius:30px;background:var(--glass);border:1px solid rgba(255,255,255,.6);font-size:.76rem;color:var(--muted);backdrop-filter:blur(10px);text-transform:uppercase;letter-spacing:.5px;font-weight:600;box-shadow:0 1px 0 rgba(255,255,255,.7) inset}

.promise{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.pcard{padding:32px 28px;border-radius:var(--radius);background:var(--glass);border:1px solid rgba(255,255,255,.6);backdrop-filter:blur(18px);transition:.5s var(--ease);box-shadow:0 1px 0 rgba(255,255,255,.8) inset}
.pcard:hover{transform:translateY(-6px);background:#fff}
.pcard .pn{font-family:'Archivo';font-weight:800;font-size:1.5rem;color:var(--muted-2);margin-bottom:16px}
.pcard h4{font-family:'Archivo';font-weight:700;text-transform:uppercase;font-size:1.1rem;margin-bottom:10px;letter-spacing:-.2px}
.pcard p{font-size:.85rem;color:var(--muted);font-weight:300}

.detail-hero{padding:150px 0 60px;display:grid;grid-template-columns:1.1fr .9fr;gap:46px;align-items:center}
.back{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:.74rem;cursor:pointer;margin-bottom:26px;transition:.3s;text-decoration:none;text-transform:uppercase;letter-spacing:1px;font-weight:600}
.back:hover{color:var(--ink)}
.detail-hero h1{font-size:clamp(2.6rem,6.5vw,5rem)}
.detail-meta{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px}
.detail-meta .dm{padding:9px 16px;border-radius:30px;background:var(--glass);border:1px solid rgba(255,255,255,.6);font-size:.78rem;color:var(--ink);backdrop-filter:blur(12px);box-shadow:0 1px 0 rgba(255,255,255,.7) inset}
.detail-meta .dm b{font-weight:700}
.detail-vis{position:relative;height:480px;border-radius:24px;overflow:hidden;border:1px solid rgba(255,255,255,.5);box-shadow:0 1px 0 rgba(255,255,255,.8) inset,0 40px 80px rgba(0,0,0,.25)}
.detail-vis img{width:100%;height:100%;object-fit:cover}
.detail-body{display:grid;grid-template-columns:1.6fr 1fr;gap:40px;align-items:start;padding-bottom:120px}
.db-main h3{font-family:'Archivo';font-weight:800;text-transform:uppercase;font-size:1.4rem;margin:0 0 18px;letter-spacing:-.3px}
.db-list{list-style:none}
.db-list li{padding:17px 0;border-bottom:1px solid var(--line);display:flex;gap:16px;align-items:flex-start}
.db-list li .num{font-family:'Archivo';font-weight:800;color:var(--muted-2);font-size:.85rem;min-width:30px}
.db-list li .txt{font-size:.94rem;color:var(--ink);font-weight:300}
.db-list li .txt b{font-weight:600}
.db-note{margin-top:28px;padding:22px 24px;border-radius:16px;background:var(--glass);border:1px solid rgba(255,255,255,.6);font-size:.86rem;color:var(--muted);font-weight:300;box-shadow:0 1px 0 rgba(255,255,255,.7) inset}
.enroll{position:sticky;top:108px;padding:32px 28px;border-radius:var(--radius);background:var(--glass-2);border:1px solid rgba(255,255,255,.7);backdrop-filter:blur(26px) saturate(170%);box-shadow:0 1px 0 rgba(255,255,255,.9) inset,0 30px 60px rgba(0,0,0,.18)}
.enroll .ep{font-family:'Archivo';font-weight:800;font-size:2.8rem;line-height:1}
.enroll .ep small{font-size:1rem;color:var(--muted);font-weight:400}
.enroll .erow{display:flex;justify-content:space-between;padding:13px 0;border-bottom:1px solid var(--line);font-size:.84rem}
.enroll .erow:first-of-type{margin-top:20px}
.enroll .erow span:first-child{color:var(--muted)}
.enroll .btn{width:100%;justify-content:center;margin-top:22px}
.enroll .dep{text-align:center;font-size:.72rem;color:var(--muted);margin-top:12px}

.cta{text-align:center;padding:130px 28px}
.cta h2{font-size:clamp(2.4rem,6vw,4.5rem)}
.cta p{color:var(--muted);max-width:480px;margin:22px auto 38px;font-weight:300}
.contact-strip{display:flex;justify-content:center;gap:36px;flex-wrap:wrap;margin-top:46px;color:var(--muted);font-size:.84rem}
.contact-strip a{color:var(--muted);text-decoration:none;transition:.3s}
.contact-strip a:hover{color:var(--ink)}

footer{border-top:1px solid var(--line);padding:42px 0}
.foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.foot img{height:18px}
.foot p{font-size:.78rem;color:var(--muted-2)}

.fab{position:fixed;bottom:24px;right:24px;z-index:200;display:flex;align-items:center;gap:10px;padding:13px 20px 13px 13px;border-radius:40px;text-decoration:none;color:var(--ink);font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:.5px;font-family:'Archivo';background:var(--glass-2);backdrop-filter:blur(26px) saturate(180%);-webkit-backdrop-filter:blur(26px) saturate(180%);border:1px solid rgba(255,255,255,.7);box-shadow:0 1px 0 rgba(255,255,255,.9) inset,0 16px 40px rgba(0,0,0,.2);transition:.4s var(--ease)}
.fab:hover{background:#fff;transform:translateY(-3px)}
.fab .fi{width:30px;height:30px;border-radius:50%;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1rem}
.fab .dot{position:absolute;top:-3px;right:-3px;width:11px;height:11px;background:var(--ink);border-radius:50%;border:2px solid var(--paper)}

.rv{opacity:0;transform:translateY(32px);transition:1s var(--ease)}
.rv.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}

@media(max-width:920px){
  .hero{grid-template-columns:1fr;gap:36px;padding-top:130px}
  .hero-visual{height:440px;order:-1}
  .courses{grid-template-columns:1fr;max-width:420px;margin:0 auto}
  .gallery{columns:2}
  .promise{grid-template-columns:1fr}
  .detail-hero{grid-template-columns:1fr;gap:30px}
  .detail-vis{height:380px;order:-1}
  .detail-body{grid-template-columns:1fr;gap:28px}
  .enroll{position:relative;top:0}
  .nav-links{position:fixed;top:0;right:0;height:100dvh;width:80%;max-width:330px;flex-direction:column;justify-content:center;gap:28px;background:rgba(233,233,236,.85);backdrop-filter:blur(30px) saturate(160%);transform:translateX(100%);transition:.5s var(--ease);z-index:99;border-left:1px solid var(--line)}
  .nav-links.open{transform:none}
  .nav-links a{font-size:1.05rem}
  .burger{display:flex;z-index:101}
  .burger.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
  .burger.open span:nth-child(2){opacity:0}
  .burger.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
}
@media(max-width:560px){
  .wrap{padding:0 18px}.sec{padding:80px 0}.gallery{columns:1}
  .fab .txt{display:none}.fab{padding:13px}
  .contact-strip{gap:14px;flex-direction:column}
  header{top:12px}.nav{margin:0 12px;padding:10px 14px}
}

/* ===== LIGHTBOX ===== */
.gitem{cursor:zoom-in}
.lightbox{position:fixed;inset:0;z-index:300;display:flex;align-items:center;justify-content:center;padding:40px;
  background:rgba(8,8,10,.82);backdrop-filter:blur(22px) saturate(150%);-webkit-backdrop-filter:blur(22px) saturate(150%);
  opacity:0;visibility:hidden;transition:.45s var(--ease)}
.lightbox.open{opacity:1;visibility:visible}
.lb-stage{position:relative;max-width:90vw;max-height:86vh;display:flex;flex-direction:column;align-items:center;gap:14px;
  transform:scale(.92);transition:.5s var(--ease)}
.lightbox.open .lb-stage{transform:scale(1)}
.lb-stage img{max-width:90vw;max-height:80vh;object-fit:contain;border-radius:14px;
  box-shadow:0 30px 90px rgba(0,0,0,.6);background:#111}
.lb-cap{color:rgba(255,255,255,.85);font-family:'Archivo';font-weight:600;text-transform:uppercase;letter-spacing:1px;font-size:.82rem}
.lb-close{position:absolute;top:24px;right:26px;z-index:2;width:46px;height:46px;border-radius:50%;cursor:pointer;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);color:#fff;font-size:1.1rem;
  backdrop-filter:blur(14px);transition:.3s var(--ease)}
.lb-close:hover{background:rgba(255,255,255,.22);transform:rotate(90deg)}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:54px;height:54px;border-radius:50%;cursor:pointer;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);color:#fff;font-size:1.8rem;line-height:1;
  backdrop-filter:blur(14px);transition:.3s var(--ease);display:flex;align-items:center;justify-content:center}
.lb-nav:hover{background:rgba(255,255,255,.22)}
.lb-prev{left:26px}.lb-next{right:26px}
.lb-count{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,.7);
  font-family:'Archivo';font-size:.78rem;letter-spacing:2px}
@media(max-width:560px){
  .lightbox{padding:16px}
  .lb-close{top:14px;right:14px;width:40px;height:40px}
  .lb-nav{width:44px;height:44px;font-size:1.4rem}
  .lb-prev{left:10px}.lb-next{right:10px}
}

/* ===== REVIEWS ===== */
.rev-track{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 2px 14px;
  scrollbar-width:none;-webkit-overflow-scrolling:touch}
.rev-track::-webkit-scrollbar{display:none}
.rev{flex:0 0 auto;width:380px;max-width:84vw;scroll-snap-align:start;padding:30px 30px;border-radius:var(--radius);
  background:var(--glass);border:1px solid rgba(255,255,255,.6);backdrop-filter:blur(18px) saturate(160%);-webkit-backdrop-filter:blur(18px) saturate(160%);
  box-shadow:0 1px 0 rgba(255,255,255,.8) inset,0 18px 40px rgba(0,0,0,.12);transition:.5s var(--ease);display:flex;flex-direction:column}
.rev:hover{transform:translateY(-6px);background:#fff}
.rev .stars{color:#0a0a0c;font-size:.95rem;letter-spacing:3px;margin-bottom:16px}
.rev blockquote{font-size:.95rem;color:var(--ink);font-weight:300;line-height:1.65;margin:0 0 22px;flex-grow:1}
.rev blockquote::before{content:'“';font-family:'Archivo';font-weight:800;font-size:2.4rem;line-height:0;color:var(--muted-2);margin-right:4px;vertical-align:-.4em}
.rev figcaption{display:flex;flex-direction:column;gap:2px;border-top:1px solid var(--line);padding-top:16px}
.rev .rn{font-family:'Archivo';font-weight:700;text-transform:uppercase;font-size:.9rem;letter-spacing:.3px}
.rev .rr{font-size:.76rem;color:var(--muted)}
.rev-arrows{display:flex;gap:10px;justify-content:flex-end;margin-top:18px}
.rev-btn{width:46px;height:46px;border-radius:50%;cursor:pointer;background:var(--glass-2);border:1px solid rgba(255,255,255,.7);
  color:var(--ink);font-size:1.5rem;line-height:1;backdrop-filter:blur(12px);box-shadow:0 1px 0 rgba(255,255,255,.8) inset;
  transition:.3s var(--ease);display:flex;align-items:center;justify-content:center}
.rev-btn:hover{background:var(--ink);color:#fff}
@media(max-width:560px){.rev{width:300px;padding:26px 24px}}

/* ===== COURSE GALLERY STRIP ===== */
.course-gallery{padding:0 0 120px}
.cg-head{font-family:'Archivo';font-weight:800;text-transform:uppercase;font-size:1.4rem;letter-spacing:-.3px;margin-bottom:22px}
.cg-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cg-grid figure{position:relative;margin:0;border-radius:16px;overflow:hidden;cursor:zoom-in;aspect-ratio:3/4;
  border:1px solid rgba(255,255,255,.5);box-shadow:0 1px 0 rgba(255,255,255,.7) inset,0 14px 34px rgba(0,0,0,.16)}
.cg-grid img{width:100%;height:100%;object-fit:cover;transition:.7s var(--ease)}
.cg-grid figure::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.45),transparent 55%);opacity:0;transition:.5s}
.cg-grid figure:hover img{transform:scale(1.06)}
.cg-grid figure:hover::after{opacity:1}
@media(max-width:560px){.cg-grid{grid-template-columns:1fr 1fr;gap:10px}}

/* ===== GLOSSY GLASS UPGRADE — phản sáng tinh tế ===== */
/* dải sáng chéo lướt qua các bề mặt kính */
.nav, .glass-bar, .enroll, .rev, .pcard, .skill, .fab, .detail-meta .dm, .eyebrow{position:relative;overflow:hidden}
.nav::after, .glass-bar::after, .enroll::after, .rev::after, .pcard::after, .fab::after{
  content:'';position:absolute;top:0;left:-60%;width:55%;height:100%;pointer-events:none;
  background:linear-gradient(105deg, transparent 0%, rgba(255,255,255,.55) 50%, transparent 100%);
  transform:skewX(-18deg);opacity:0;transition:opacity .4s ease}
.nav:hover::after, .glass-bar:hover::after, .enroll:hover::after, .rev:hover::after, .pcard:hover::after, .fab:hover::after{
  opacity:.7;animation:sheen 1.1s ease}
@keyframes sheen{0%{left:-60%}100%{left:130%}}
/* viền sáng trên + đáy tinh tế cho cảm giác kính dày, bóng */
.enroll, .rev, .pcard{box-shadow:
  0 1px 0 rgba(255,255,255,.95) inset,
  0 -1px 0 rgba(255,255,255,.25) inset,
  0 20px 50px rgba(0,0,0,.16),
  0 2px 6px rgba(0,0,0,.06)}
/* highlight góc trên trái — điểm sáng phản chiếu */
.enroll::before, .rev::before{content:'';position:absolute;top:-40%;left:-10%;width:60%;height:80%;pointer-events:none;
  background:radial-gradient(circle, rgba(255,255,255,.5), transparent 65%);opacity:.6;filter:blur(8px)}
/* nav bóng hơn */
.nav{box-shadow:0 1px 0 rgba(255,255,255,1) inset,0 -1px 0 rgba(255,255,255,.3) inset,0 16px 44px rgba(0,0,0,.14)}

/* ===== REGISTER MODAL ===== */
.modal{position:fixed;inset:0;z-index:400;display:flex;align-items:center;justify-content:center;padding:24px;
  background:rgba(8,8,10,.6);backdrop-filter:blur(20px) saturate(150%);-webkit-backdrop-filter:blur(20px) saturate(150%);
  opacity:0;visibility:hidden;transition:.4s var(--ease)}
.modal.open{opacity:1;visibility:visible}
.modal-card{position:relative;width:400px;max-width:92vw;padding:38px 34px;border-radius:26px;text-align:center;overflow:hidden;
  background:var(--glass-2);border:1px solid rgba(255,255,255,.75);
  backdrop-filter:blur(30px) saturate(180%);-webkit-backdrop-filter:blur(30px) saturate(180%);
  box-shadow:0 1px 0 rgba(255,255,255,1) inset,0 -1px 0 rgba(255,255,255,.3) inset,0 40px 90px rgba(0,0,0,.4);
  transform:scale(.9) translateY(10px);transition:.5s var(--ease)}
.modal.open .modal-card{transform:none}
.modal-card::before{content:'';position:absolute;top:-40%;left:-10%;width:60%;height:80%;pointer-events:none;
  background:radial-gradient(circle,rgba(255,255,255,.45),transparent 65%);filter:blur(6px)}
.modal-close{position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:50%;cursor:pointer;
  background:rgba(0,0,0,.06);border:1px solid var(--line);color:var(--ink);font-size:.95rem;transition:.3s var(--ease)}
.modal-close:hover{background:var(--ink);color:#fff;transform:rotate(90deg)}
.modal-title{font-family:'Archivo';font-weight:800;text-transform:uppercase;font-size:1.5rem;letter-spacing:-.3px;margin:10px 0 8px}
.modal-sub{font-size:.86rem;color:var(--muted);font-weight:300;margin-bottom:24px}
.qr-box{display:inline-flex;padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.12);margin-bottom:22px}
.qr-box #qrcode img, .qr-box #qrcode canvas{display:block;width:180px;height:180px}
.modal-btn{width:100%;justify-content:center}
.modal-deposit{font-size:.74rem;color:var(--muted);margin-top:16px}
.modal-contact{font-size:.74rem;color:var(--muted-2);margin-top:8px}
.modal-contact a{color:var(--muted-2);text-decoration:none}
.modal-contact a:hover{color:var(--ink)}
@media(max-width:560px){.modal-card{padding:32px 24px}.qr-box #qrcode img,.qr-box #qrcode canvas{width:150px;height:150px}}

/* ===== BOTTOM GLASS STRIP (xuyên suốt mọi trang) ===== */
.bottom-glass{position:fixed;left:0;right:0;bottom:0;height:120px;z-index:90;pointer-events:none;
  background:linear-gradient(to top, rgba(255,255,255,.5) 0%, rgba(255,255,255,.15) 55%, transparent 100%);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  -webkit-mask:linear-gradient(to top, #000 0%, #000 40%, transparent 100%);
          mask:linear-gradient(to top, #000 0%, #000 40%, transparent 100%)}
.bottom-glass::after{content:'';position:absolute;inset:0;opacity:.5;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
@media(max-width:560px){.bottom-glass{height:90px}}

/* ===== HERO V2 (giống Hình 2) ===== */
.hero-v2{position:relative;min-height:100vh;display:flex;align-items:flex-end;padding-bottom:9vh;overflow:hidden}
.hero-v2-img{position:absolute;top:0;right:0;width:62%;height:100%;z-index:0}
.hero-v2-img img{width:100%;height:100%;object-fit:cover;object-position:center 22%;
  filter:grayscale(1) contrast(1.04);
  -webkit-mask:linear-gradient(to right, transparent 0%, #000 26%, #000 100%);
          mask:linear-gradient(to right, transparent 0%, #000 26%, #000 100%)}
.hero-v2-text{position:relative;z-index:2;width:100%}
.he-small{display:block;font-family:'Archivo';font-weight:500;font-size:clamp(1.6rem,3.5vw,3rem);color:var(--ink);letter-spacing:-.5px;margin-bottom:2px}
.he-big{font-size:clamp(2.6rem,8vw,6.4rem);color:var(--muted-2);line-height:.92;letter-spacing:-1px}
.he-desc{max-width:440px;color:var(--muted);font-size:.92rem;font-weight:300;margin:24px 0 30px;font-style:italic}
@media(max-width:920px){
  .hero-v2{align-items:flex-end;padding-bottom:8vh}
  .hero-v2-img{width:100%;opacity:.85;
    -webkit-mask:linear-gradient(to top, transparent 0%, #000 40%, #000 100%);mask:linear-gradient(to top, transparent 0%, #000 40%, #000 100%)}
  .hero-v2-text{background:linear-gradient(to top, var(--paper) 30%, transparent);padding-top:120px}
  .he-desc{max-width:none}
}

/* ===== PORTFOLIO COLLAPSE ===== */
.gallery-collapse{position:relative;overflow:hidden;transition:max-height .7s var(--ease)}
.gallery-collapse.collapsed{max-height:560px}
.gallery-collapse.expanded{max-height:20000px}
.gallery-fade{position:absolute;left:0;right:0;bottom:0;height:160px;pointer-events:none;
  background:linear-gradient(to top, var(--paper) 8%, rgba(233,233,236,.6) 50%, transparent);transition:opacity .5s}
.gallery-collapse.expanded .gallery-fade{opacity:0}

/* payment QR specifics */
.qr-box img{display:block;width:200px;height:auto;border-radius:8px}
.pay-info{font-size:.84rem;color:var(--ink);margin-bottom:18px;line-height:1.5}
.pay-info b{font-family:'Archivo';font-weight:700;letter-spacing:.3px}
@media(max-width:560px){.qr-box img{width:170px}}