:root{
  --bg:#FAF6F0; --surface:#FFFFFF; --surface-2:#F3EDE3; --text:#16181D; --muted:#4F5966;
  --primary:#0E5A53; --primary-ink:#FFFFFF; --primary-soft:#E4F0ED; --primary-strong:#0A463F;
  --accent:#EA8C2B; --accent-ink:#3A2408; --accent-soft:#FBEAD3;
  --border:#E8E1D6; --border-strong:#D7CCBB;
  --ok:#1E8E5A; --warn:#C8791A; --bad:#C0492F;
  --shadow-sm:0 1px 2px rgba(22,24,29,.06),0 1px 3px rgba(22,24,29,.05);
  --shadow-md:0 6px 20px -8px rgba(14,90,83,.18),0 3px 8px -4px rgba(22,24,29,.10);
  --shadow-lg:0 24px 60px -22px rgba(14,90,83,.30),0 10px 24px -14px rgba(22,24,29,.16);
  --r-sm:10px; --r:16px; --r-lg:22px; --r-pill:999px;
  --maxw:1160px; --gutter:20px;
  --ff-head:"Be Vietnam Pro",system-ui,"Segoe UI",sans-serif;
  --ff-body:"Manrope","Be Vietnam Pro",system-ui,sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  color-scheme:dark;
  --bg:#0F1413; --surface:#17201D; --surface-2:#1E2926; --text:#F1EFE9; --muted:#9BA7A1;
  --primary:#34C9B0; --primary-ink:#06231F; --primary-soft:#12332E; --primary-strong:#5FE0CB;
  --accent:#F5AE52; --accent-ink:#2A1802; --accent-soft:#3A2A12;
  --border:#27312D; --border-strong:#37433E;
  --ok:#49C98A; --warn:#F0B25A; --bad:#EE7A63;
  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow-md:0 8px 24px -10px rgba(0,0,0,.6);
  --shadow-lg:0 26px 60px -24px rgba(0,0,0,.7);
}}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#0F1413; --surface:#17201D; --surface-2:#1E2926; --text:#F1EFE9; --muted:#9BA7A1;
  --primary:#34C9B0; --primary-ink:#06231F; --primary-soft:#12332E; --primary-strong:#5FE0CB;
  --accent:#F5AE52; --accent-ink:#2A1802; --accent-soft:#3A2A12;
  --border:#27312D; --border-strong:#37433E;
  --ok:#49C98A; --warn:#F0B25A; --bad:#EE7A63;
  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow-md:0 8px 24px -10px rgba(0,0,0,.6);
  --shadow-lg:0 26px 60px -24px rgba(0,0,0,.7);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--ff-body);
  font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
.app{overflow-x:clip}
h1,h2,h3,h4{font-family:var(--ff-head);line-height:1.15;letter-spacing:-.01em;text-wrap:balance;margin:0}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
svg{display:block}
.i{width:1.15em;height:1.15em;flex:none;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
:focus-visible{outline:2.5px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(48px,7vw,88px)}
.section-tight{padding-block:clamp(34px,5vw,56px)}
.eyebrow{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.11em;color:var(--primary);
  display:inline-flex;align-items:center;gap:8px}
.eyebrow.on-accent{color:var(--accent)}
.h2{font-size:clamp(27px,3.6vw,40px);font-weight:800}
.lead{color:var(--muted);font-size:clamp(16px,1.6vw,18.5px);max-width:64ch}
.section-head{display:flex;flex-direction:column;gap:12px;margin-bottom:34px;max-width:none}
.section-head.center{align-items:center;text-align:center;margin-inline:auto}
.section-head.center .lead{margin-inline:auto}

/* buttons */
.btn{font-family:var(--ff-head);font-weight:700;font-size:15.5px;border-radius:var(--r-pill);
  padding:13px 22px;display:inline-flex;align-items:center;justify-content:center;gap:9px;cursor:pointer;
  border:1.5px solid transparent;transition:transform .16s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  white-space:nowrap;line-height:1}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--primary);color:var(--primary-ink);box-shadow:var(--shadow-md)}
.btn-primary:hover{background:var(--primary-strong);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-accent{background:var(--accent);color:var(--accent-ink);box-shadow:var(--shadow-md)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);filter:saturate(1.05)}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--border-strong)}
.btn-ghost:hover{border-color:var(--primary);background:var(--primary-soft)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-lg{padding:16px 30px;font-size:17px}
.btn-block{width:100%}

/* chips / badges */
.chip{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:600;color:var(--muted);
  background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-pill);padding:6px 13px}
.chip .i{width:15px;height:15px;color:var(--primary)}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;padding:5px 11px;border-radius:var(--r-pill);
  text-transform:uppercase;letter-spacing:.04em}
.badge-open{background:var(--primary-soft);color:var(--primary-strong)}
.badge-soon{background:var(--accent-soft);color:var(--accent)}
.badge-upcoming{background:transparent;color:var(--muted);border:1.5px dashed var(--border-strong)}
.badge-full{background:var(--surface-2);color:var(--muted)}
.dot{width:8px;height:8px;border-radius:50%;background:currentColor;box-shadow:0 0 0 4px color-mix(in srgb,currentColor 22%,transparent)}

/* mockup notice */
.mock-bar{background:var(--accent-soft);color:var(--accent-ink);font-size:13.5px;font-weight:600;
  border-bottom:1px solid var(--border)}
:root[data-theme="dark"] .mock-bar,
:root:not([data-theme="light"]) .mock-bar{color:var(--accent)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .mock-bar{color:var(--accent)}}
.mock-bar .container{display:flex;align-items:center;gap:12px;padding-block:9px}
.mock-bar .i{width:17px;height:17px;flex:none}
.mock-bar b{font-weight:800}
.mock-bar button{margin-left:auto;background:none;border:none;color:inherit;cursor:pointer;font-size:19px;line-height:1;padding:2px 6px;opacity:.7}
.mock-bar button:hover{opacity:1}

/* header */
header.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:color-mix(in srgb,var(--bg) 78%,transparent);
  backdrop-filter:blur(12px) saturate(1.1);border-bottom:1px solid transparent;transition:background .2s,border-color .2s,box-shadow .2s}
header.nav.scrolled{background:color-mix(in srgb,var(--surface) 92%,transparent);border-bottom-color:var(--border);box-shadow:var(--shadow-sm)}
.nav-row{display:flex;align-items:center;gap:20px;height:70px}
.brand{display:flex;align-items:center;gap:11px;cursor:pointer;flex:none}
.brand-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(145deg,var(--primary),var(--primary-strong));
  color:var(--primary-ink);display:grid;place-items:center;font-family:var(--ff-head);font-weight:800;font-size:19px;box-shadow:var(--shadow-sm)}
.brand-name{font-family:var(--ff-head);font-weight:800;font-size:18px;letter-spacing:-.02em;line-height:1.05}
.brand-name span{display:block;font-size:11px;font-weight:600;letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
.nav-menu{display:flex;gap:4px;margin-left:8px}
.nav-menu a{font-weight:600;font-size:15px;color:var(--muted);padding:9px 13px;border-radius:10px;transition:color .15s,background .15s}
.nav-menu a:hover{color:var(--text);background:var(--surface-2)}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{width:42px;height:42px;border-radius:12px;border:1.5px solid var(--border-strong);background:var(--surface);
  color:var(--text);display:grid;place-items:center;cursor:pointer;flex:none;transition:border-color .15s,background .15s}
.icon-btn:hover{border-color:var(--primary);color:var(--primary)}
.icon-btn .i{width:20px;height:20px}
.hamburger{display:none}
@media (max-width:940px){
  .nav-menu{display:none}
  .nav-cta .btn-ghost{display:none}
  .hamburger{display:grid}
}
@media (max-width:520px){ .nav-cta .btn.hide-xs{display:none} .brand-name{font-size:16px} }

/* mobile drawer */
.drawer-scrim{position:fixed;inset:0;background:rgba(10,15,14,.5);z-index:60;opacity:0;pointer-events:none;transition:opacity .2s}
.drawer-scrim.open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);background:var(--surface);z-index:61;
  transform:translateX(102%);transition:transform .26s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;
  padding:calc(env(safe-area-inset-top,0px) + 18px) 20px calc(env(safe-area-inset-bottom,0px) + 18px);box-shadow:var(--shadow-lg)}
.drawer.open{transform:translateX(0)}
.drawer .close{align-self:flex-end;font-size:26px;background:none;border:none;color:var(--muted);cursor:pointer;line-height:1}
.drawer a.d-link{font-family:var(--ff-head);font-weight:700;font-size:19px;padding:13px 6px;border-bottom:1px solid var(--border);color:var(--text)}
.drawer .d-actions{margin-top:auto;display:flex;flex-direction:column;gap:10px}

/* hero */
.hero{position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(60% 55% at 82% 8%,color-mix(in srgb,var(--accent) 16%,transparent),transparent 70%),
    radial-gradient(55% 60% at 8% 92%,color-mix(in srgb,var(--primary) 16%,transparent),transparent 70%);}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding-block:clamp(40px,6vw,72px)}
@media (max-width:920px){.hero-grid{grid-template-columns:1fr;gap:36px}}
.hero h1{font-size:clamp(34px,5.4vw,58px);font-weight:800;letter-spacing:-.025em;line-height:1.04}
.hero h1 em{font-style:normal;color:var(--primary);position:relative;white-space:nowrap}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:.06em;height:.24em;background:color-mix(in srgb,var(--accent) 55%,transparent);z-index:-1;border-radius:3px}
.hero-sub{margin-top:20px;font-size:clamp(16px,1.8vw,19px);color:var(--muted);max-width:52ch}
.hero-cta{margin-top:30px;display:flex;flex-wrap:wrap;gap:13px}
.hero-trust{margin-top:28px;display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center}
.hero-trust .tr{display:flex;align-items:center;gap:9px;font-size:14.5px;color:var(--muted)}
.hero-trust .tr b{color:var(--text);font-family:var(--ff-head);font-weight:800;font-size:19px}
.hero-trust .stars{color:var(--accent);display:flex;gap:1px}
.hero-visual{position:relative}
.hero-card{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--border);
  background:var(--surface);position:relative}
.hero-photo{aspect-ratio:4/3.1;background:
  linear-gradient(135deg,var(--primary-soft),var(--surface-2));position:relative;display:grid;place-items:center;overflow:hidden}
.hero-photo .ph-label{position:absolute;bottom:12px;left:12px;font-size:12px;color:var(--muted);background:color-mix(in srgb,var(--surface) 80%,transparent);
  padding:5px 10px;border-radius:8px;backdrop-filter:blur(4px)}
.hero-photo .classroom{width:76%;opacity:.9}
.hero-photo .classroom .seat{fill:color-mix(in srgb,var(--primary) 30%,transparent)}
.float-badge{position:absolute;background:var(--surface);border:1px solid var(--border);border-radius:14px;
  box-shadow:var(--shadow-md);padding:11px 15px;display:flex;align-items:center;gap:11px}
.float-badge.b1{top:16px;right:-10px}
.float-badge.b2{bottom:18px;left:-14px}
@media (max-width:920px){.float-badge.b1{right:8px}.float-badge.b2{left:8px}}
@media (max-width:520px){.float-badge{display:none}}
.float-badge .ic{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:var(--primary-soft);color:var(--primary)}
.float-badge.acc .ic{background:var(--accent-soft);color:var(--accent)}
.float-badge .t{font-size:12px;color:var(--muted);line-height:1.2}
.float-badge .v{font-family:var(--ff-head);font-weight:800;font-size:16px}

/* countdown */
.countdown{display:inline-flex;align-items:center;gap:8px;margin-top:22px;background:var(--surface);border:1px solid var(--border);
  border-radius:14px;padding:11px 15px;box-shadow:var(--shadow-sm);flex-wrap:wrap}
.countdown .cd-label{font-size:13.5px;color:var(--muted);font-weight:600;display:flex;align-items:center;gap:7px}
.cd-units{display:flex;gap:6px}
.cd-u{background:var(--primary);color:var(--primary-ink);border-radius:9px;min-width:44px;padding:6px 4px;text-align:center;font-variant-numeric:tabular-nums}
.cd-u b{font-family:var(--ff-head);font-weight:800;font-size:19px;display:block;line-height:1}
.cd-u small{font-size:9.5px;text-transform:uppercase;letter-spacing:.06em;opacity:.85}

/* generic cards */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow-sm)}
.grid{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.g-3,.g-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.g-2,.g-3,.g-4{grid-template-columns:1fr}}

/* stat strip */
.stat-strip{background:var(--primary);color:var(--primary-ink);border-radius:var(--r-lg);padding:clamp(24px,4vw,38px);
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;box-shadow:var(--shadow-md);position:relative;overflow:hidden}
.stat-strip::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:color-mix(in srgb,var(--accent) 22%,transparent)}
@media (max-width:700px){.stat-strip{grid-template-columns:repeat(2,1fr)}}
.stat{position:relative;z-index:1}
.stat b{font-family:var(--ff-head);font-weight:800;font-size:clamp(28px,4.4vw,40px);display:block;line-height:1;font-variant-numeric:tabular-nums}
.stat span{font-size:14px;opacity:.9;margin-top:6px;display:block}

/* pain list */
.pain-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
@media (max-width:820px){.pain-wrap{grid-template-columns:1fr;gap:26px}}
.pain-list{display:flex;flex-direction:column;gap:12px}
.pain-item{display:flex;gap:13px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-sm);padding:15px 17px}
.pain-item .x{width:26px;height:26px;border-radius:8px;background:color-mix(in srgb,var(--bad) 14%,transparent);color:var(--bad);
  display:grid;place-items:center;flex:none}
.pain-item .x .i{width:15px;height:15px}
.solve{background:linear-gradient(160deg,var(--primary),var(--primary-strong));color:var(--primary-ink);border-radius:var(--r-lg);
  padding:clamp(24px,3.5vw,34px);box-shadow:var(--shadow-md)}
.solve h3{font-size:23px;font-weight:800;margin-bottom:10px}
.solve p{opacity:.92}
.solve ul{list-style:none;padding:0;margin:18px 0 0;display:flex;flex-direction:column;gap:11px}
.solve li{display:flex;gap:10px;align-items:flex-start;font-weight:500}
.solve li .i{width:20px;height:20px;color:var(--accent);flex:none;margin-top:3px}

/* outcome cards */
.oc{padding:22px}
.oc .ic{width:46px;height:46px;border-radius:12px;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;margin-bottom:15px}
.oc .ic .i{width:23px;height:23px}
.oc h4{font-size:18px;font-weight:700;margin-bottom:7px}
.oc p{color:var(--muted);font-size:14.5px}

/* course cards */
.course-card{display:flex;flex-direction:column;overflow:hidden;transition:transform .2s,box-shadow .2s;cursor:pointer}
.course-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.cc-thumb{aspect-ratio:16/9;position:relative;display:grid;place-items:center;overflow:hidden}
.cc-thumb .badge{position:absolute;top:12px;left:12px;z-index:2}
.cc-thumb .price-tag{position:absolute;bottom:12px;right:12px;z-index:2;background:var(--surface);border:1px solid var(--border);
  border-radius:10px;padding:6px 12px;font-family:var(--ff-head);font-weight:800;box-shadow:var(--shadow-sm);font-size:15px}
.cc-thumb .price-tag s{color:var(--muted);font-weight:600;font-size:12px;margin-right:5px}
.cc-body{padding:19px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.cc-body h3{font-size:20px;font-weight:800;line-height:1.2}
.cc-tag{color:var(--muted);font-size:14px;line-height:1.5}
.cc-meta{display:flex;flex-wrap:wrap;gap:7px 14px;font-size:13px;color:var(--muted);margin-top:2px}
.cc-meta span{display:inline-flex;align-items:center;gap:6px}
.cc-meta .i{width:15px;height:15px;color:var(--primary)}
.cc-seats{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:9px}
.seat-bar{flex:1;height:7px;border-radius:5px;background:var(--surface-2);overflow:hidden}
.seat-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--primary))}
.cc-actions{display:flex;gap:9px;margin-top:auto;padding-top:6px}
.cc-actions .btn{flex:1}
.course-card.upcoming{cursor:default;border-style:dashed;background:var(--surface-2)}
.course-card.upcoming:hover{transform:none;box-shadow:var(--shadow-sm)}
.course-card.upcoming .cc-thumb{opacity:.7}
.thumb-a{background:linear-gradient(135deg,#0E5A53,#12756a)}
.thumb-b{background:linear-gradient(135deg,#C8791A,#EA8C2B)}
.thumb-soon{background:linear-gradient(135deg,var(--surface-2),var(--border))}
.cc-thumb .glyph{opacity:.9}
.cc-thumb .glyph .i{width:64px;height:64px;color:#fff;stroke-width:1.5}
.course-card.upcoming .glyph .i{color:var(--muted)}

/* process timeline */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
@media (max-width:820px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:480px){.steps{grid-template-columns:1fr}}
.step{padding:22px;position:relative}
.step .num{width:40px;height:40px;border-radius:11px;background:var(--accent-soft);color:var(--accent);font-family:var(--ff-head);
  font-weight:800;font-size:18px;display:grid;place-items:center;margin-bottom:14px}
.step h4{font-size:17px;font-weight:700;margin-bottom:7px}
.step p{color:var(--muted);font-size:14px}

/* mentor */
.mentor{display:grid;grid-template-columns:.85fr 1.15fr;gap:38px;align-items:center}
@media (max-width:820px){.mentor{grid-template-columns:1fr;gap:26px}}
.mentor-photo{aspect-ratio:1/1.05;border-radius:var(--r-lg);overflow:hidden;background:linear-gradient(150deg,var(--primary-soft),var(--surface-2));
  border:1px solid var(--border);box-shadow:var(--shadow-md);position:relative;display:grid;place-items:center}
.mentor-photo .ph-label{position:absolute;bottom:12px;left:12px;font-size:12px;color:var(--muted);background:color-mix(in srgb,var(--surface) 82%,transparent);padding:5px 10px;border-radius:8px}
.mentor .facts{display:flex;flex-direction:column;gap:16px;margin-top:20px}
.fact{display:flex;gap:13px;align-items:flex-start}
.fact .i{width:22px;height:22px;color:var(--primary);flex:none;margin-top:3px}
.fact b{font-family:var(--ff-head)}

/* testimonials */
.tst{padding:24px;display:flex;flex-direction:column;gap:14px}
.tst .quote{font-size:64px;line-height:.4;font-family:var(--ff-head);color:var(--accent);height:26px}
.tst p{font-size:15.5px}
.tst .who{display:flex;align-items:center;gap:12px;margin-top:auto}
.tst .av{width:44px;height:44px;border-radius:50%;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;
  font-family:var(--ff-head);font-weight:800;flex:none}
.tst .who b{display:block;font-size:14.5px}
.tst .who span{font-size:12.5px;color:var(--muted)}

/* guarantee */
.guar{background:linear-gradient(150deg,var(--surface),var(--surface-2));border:1px solid var(--border);border-radius:var(--r-lg);
  padding:clamp(26px,4vw,40px);display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:center}
@media (max-width:700px){.guar{grid-template-columns:1fr;text-align:center}}
.guar .shield{width:88px;height:88px;border-radius:22px;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;margin-inline:auto}
.guar .shield .i{width:46px;height:46px}
.guar .g-items{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:16px}
@media (max-width:560px){.guar .g-items{grid-template-columns:1fr}}
.guar .g-items div{display:flex;gap:9px;align-items:flex-start;font-size:14.5px;text-align:left}
.guar .g-items .i{width:19px;height:19px;color:var(--ok);flex:none;margin-top:3px}

/* schedule table */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--r);background:var(--surface)}
table.sched{width:100%;border-collapse:collapse;min-width:640px}
table.sched th,table.sched td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--border);font-size:14.5px}
table.sched th{font-family:var(--ff-head);font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);background:var(--surface-2)}
table.sched tr:last-child td{border-bottom:none}
table.sched td b{font-family:var(--ff-head)}

/* faq */
.faq{max-width:820px;margin-inline:auto;display:flex;flex-direction:column;gap:12px}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-sm);overflow:hidden}
.faq summary{list-style:none;cursor:pointer;padding:17px 20px;display:flex;align-items:center;gap:14px;font-family:var(--ff-head);font-weight:700;font-size:16.5px}
.faq summary::-webkit-details-marker{display:none}
.faq summary .pm{margin-left:auto;width:26px;height:26px;border-radius:8px;background:var(--surface-2);display:grid;place-items:center;transition:transform .25s;flex:none;color:var(--primary)}
.faq details[open] summary .pm{transform:rotate(45deg)}
.faq .ans{padding:0 20px 18px 60px;color:var(--muted);font-size:15px}
@media (max-width:520px){.faq .ans{padding-left:20px}}

/* dual CTA */
.dual{display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media (max-width:760px){.dual{grid-template-columns:1fr}}
.cta-card{border-radius:var(--r-lg);padding:clamp(24px,3.5vw,34px);display:flex;flex-direction:column;gap:14px}
.cta-lead{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm)}
.cta-buy{background:linear-gradient(155deg,var(--primary),var(--primary-strong));color:var(--primary-ink);box-shadow:var(--shadow-md)}
.cta-card h3{font-size:23px;font-weight:800}
.cta-card .reassure{font-size:13px;display:flex;flex-wrap:wrap;gap:6px 15px;margin-top:2px}
.cta-card .reassure span{display:inline-flex;align-items:center;gap:6px;opacity:.9}
.cta-card .reassure .i{width:15px;height:15px}

/* forms */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:13px}
.field label{font-size:13.5px;font-weight:600}
.field .req{color:var(--bad)}
.field input,.field select,.field textarea{font-family:var(--ff-body);font-size:15px;padding:12px 14px;border-radius:11px;
  border:1.5px solid var(--border-strong);background:var(--surface);color:var(--text);width:100%;transition:border-color .15s}
.cta-buy .field input,.cta-buy .field select{background:color-mix(in srgb,#fff 12%,transparent);border-color:color-mix(in srgb,#fff 30%,transparent);color:var(--primary-ink)}
.cta-buy .field input::placeholder{color:color-mix(in srgb,var(--primary-ink) 65%,transparent)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);outline:none}
.consent{display:flex;gap:9px;align-items:flex-start;font-size:12.5px;color:var(--muted);margin-bottom:13px}
.cta-buy .consent{color:color-mix(in srgb,var(--primary-ink) 82%,transparent)}
.consent input{margin-top:3px;flex:none;width:16px;height:16px;accent-color:var(--primary)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:440px){.form-row{grid-template-columns:1fr}}

/* footer */
footer.ft{background:var(--surface);border-top:1px solid var(--border);margin-top:20px}
:root[data-theme="dark"] footer.ft,:root:not([data-theme="light"]) footer.ft{background:#0B100F}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) footer.ft{background:#0B100F}}
.ft-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:34px;padding-block:52px}
@media (max-width:820px){.ft-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.ft-grid{grid-template-columns:1fr}}
.ft h5{font-family:var(--ff-head);font-weight:700;font-size:14px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:16px;color:var(--muted)}
.ft ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.ft a,.ft li{color:var(--text);font-size:14.5px}
.ft a:hover{color:var(--primary)}
.ft .muted{color:var(--muted);font-size:13.5px;line-height:1.7}
.ft-news{display:flex;gap:8px;margin-top:12px}
.ft-news input{flex:1;padding:11px 13px;border-radius:10px;border:1.5px solid var(--border-strong);background:var(--bg);color:var(--text)}
.ft-bottom{border-top:1px solid var(--border);padding-block:20px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}
.ph{color:var(--accent);font-weight:600}

/* floating */
.floats{position:fixed;right:16px;bottom:calc(env(safe-area-inset-bottom,0px) + 16px);z-index:40;display:flex;flex-direction:column;gap:11px}
@media (max-width:940px){.floats{bottom:calc(env(safe-area-inset-bottom,0px) + 78px)}}
.fbtn{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;box-shadow:var(--shadow-lg);cursor:pointer;border:none;color:#fff;position:relative}
.fbtn .i{width:26px;height:26px}
.fbtn.zalo{background:#0068FF}
.fbtn.call{background:var(--primary)}
.fbtn.zalo::after{content:"";position:absolute;inset:0;border-radius:50%;box-shadow:0 0 0 0 rgba(0,104,255,.5);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(0,104,255,.45)}70%{box-shadow:0 0 0 16px rgba(0,104,255,0)}100%{box-shadow:0 0 0 0 rgba(0,104,255,0)}}
@media (prefers-reduced-motion:reduce){.fbtn.zalo::after{animation:none}}

/* mobile sticky bar */
.mbar{position:fixed;left:0;right:0;bottom:0;z-index:45;display:none;gap:10px;padding:10px 14px calc(env(safe-area-inset-bottom,0px) + 10px);
  background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(10px);border-top:1px solid var(--border)}
.mbar .btn{flex:1}
@media (max-width:940px){.mbar{display:flex}}

/* modal */
.modal-scrim{position:fixed;inset:0;z-index:80;background:rgba(10,15,14,.55);backdrop-filter:blur(3px);
  display:grid;place-items:center;padding:16px;opacity:0;pointer-events:none;transition:opacity .2s}
.modal-scrim.open{opacity:1;pointer-events:auto}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow-lg);
  width:100%;max-width:560px;max-height:92vh;overflow:auto;transform:translateY(14px) scale(.98);transition:transform .22s}
.modal-scrim.open .modal{transform:none}
.modal-head{padding:22px 24px 0;display:flex;align-items:flex-start;gap:14px}
.modal-head h3{font-size:22px;font-weight:800;flex:1}
.modal-head .close{background:var(--surface-2);border:none;width:34px;height:34px;border-radius:10px;font-size:20px;color:var(--muted);cursor:pointer;flex:none}
.modal-body{padding:16px 24px 24px}
.step-ind{display:flex;gap:8px;margin-bottom:18px}
.step-ind .s{flex:1;height:5px;border-radius:4px;background:var(--surface-2)}
.step-ind .s.on{background:var(--primary)}
.order-sum{background:var(--surface-2);border-radius:var(--r-sm);padding:15px 17px;margin-bottom:16px;font-size:14px}
.order-sum .row{display:flex;justify-content:space-between;gap:12px;padding:4px 0}
.order-sum .row b{font-family:var(--ff-head)}
.order-sum .total{border-top:1px dashed var(--border-strong);margin-top:8px;padding-top:10px;font-size:16px}
.pay-opts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px}
.pay-opt{border:1.5px solid var(--border-strong);border-radius:12px;padding:13px;cursor:pointer;display:flex;flex-direction:column;gap:3px;transition:border-color .15s,background .15s}
.pay-opt.sel{border-color:var(--primary);background:var(--primary-soft)}
.pay-opt b{font-family:var(--ff-head);font-size:14.5px}
.pay-opt span{font-size:12px;color:var(--muted)}
.qr-box{text-align:center;padding:8px 0}
.qr-frame{width:190px;height:190px;margin:0 auto 12px;background:#fff;border-radius:16px;border:1px solid var(--border);padding:12px;box-shadow:var(--shadow-sm)}
.qr-note{font-size:12.5px;color:var(--muted);max-width:38ch;margin:0 auto}
.bank-line{display:flex;justify-content:space-between;gap:10px;font-size:13.5px;padding:7px 0;border-bottom:1px solid var(--border)}
.bank-line:last-child{border:none}
.bank-line b{font-family:var(--ff-head)}
.copy-btn{background:var(--surface-2);border:1px solid var(--border);border-radius:7px;padding:2px 9px;font-size:12px;cursor:pointer;color:var(--primary);font-weight:600}
.pay-status{display:flex;align-items:center;gap:10px;justify-content:center;margin-top:14px;font-size:14px;color:var(--muted)}
.spin{width:17px;height:17px;border:2.5px solid var(--border-strong);border-top-color:var(--primary);border-radius:50%;animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* toast */
.toast{position:fixed;left:50%;bottom:calc(env(safe-area-inset-bottom,0px) + 22px);transform:translateX(-50%) translateY(20px);
  background:var(--text);color:var(--bg);padding:13px 20px;border-radius:12px;box-shadow:var(--shadow-lg);z-index:100;
  font-weight:600;font-size:14.5px;display:flex;align-items:center;gap:10px;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;max-width:90vw}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast .i{width:19px;height:19px;color:var(--ok)}

/* course detail view */
.back-link{display:inline-flex;align-items:center;gap:7px;color:var(--muted);font-weight:600;font-size:14.5px;margin-bottom:8px;cursor:pointer}
.back-link:hover{color:var(--primary)}
.crumb{font-size:13px;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--primary)}
.cd-hero{display:grid;grid-template-columns:1.35fr .85fr;gap:36px;align-items:start}
@media (max-width:900px){.cd-hero{grid-template-columns:1fr}}
.cd-hero h1{font-size:clamp(28px,4vw,44px);font-weight:800;letter-spacing:-.02em;margin:10px 0 14px}
.cd-metabar{display:flex;flex-wrap:wrap;gap:9px 10px;margin:18px 0}
.price-box{position:sticky;top:calc(env(safe-area-inset-top,0px) + 86px);border-radius:var(--r-lg);padding:24px;box-shadow:var(--shadow-md);
  border:1px solid var(--border);background:var(--surface)}
@media (max-width:900px){.price-box{position:static}}
.price-box .big{font-family:var(--ff-head);font-weight:800;font-size:32px;line-height:1}
.price-box .big s{font-size:17px;color:var(--muted);font-weight:600;margin-right:8px}
.price-box .savenote{font-size:13px;color:var(--accent);font-weight:600;margin-top:5px}
.price-box .pb-list{list-style:none;padding:0;margin:16px 0;display:flex;flex-direction:column;gap:9px;font-size:14px}
.price-box .pb-list li{display:flex;gap:9px;align-items:flex-start}
.price-box .pb-list .i{width:18px;height:18px;color:var(--ok);flex:none;margin-top:3px}
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:820px){.tiers{grid-template-columns:1fr}}
.tier{border:1px solid var(--border);border-radius:var(--r);padding:24px;background:var(--surface);display:flex;flex-direction:column;gap:6px;position:relative}
.tier.pop{border-color:var(--primary);box-shadow:var(--shadow-md)}
.tier.pop::before{content:"Được chọn nhiều";position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--accent);color:var(--accent-ink);
  font-size:11.5px;font-weight:800;padding:4px 12px;border-radius:var(--r-pill);text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}
.tier h4{font-size:18px;font-weight:800;margin-top:4px}
.tier .tp{font-family:var(--ff-head);font-weight:800;font-size:26px}
.tier .tp small{font-size:13px;color:var(--muted);font-weight:600}
.tier ul{list-style:none;padding:0;margin:8px 0 16px;display:flex;flex-direction:column;gap:8px;font-size:14px;flex:1}
.tier ul li{display:flex;gap:8px;align-items:flex-start}
.tier ul .i{width:17px;height:17px;color:var(--primary);flex:none;margin-top:3px}
.mod{border:1px solid var(--border);border-radius:var(--r-sm);overflow:hidden;background:var(--surface);margin-bottom:11px}
.mod summary{list-style:none;cursor:pointer;padding:16px 18px;display:flex;gap:14px;align-items:center;font-family:var(--ff-head);font-weight:700}
.mod summary::-webkit-details-marker{display:none}
.mod .mn{width:34px;height:34px;border-radius:9px;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;font-weight:800;flex:none;font-size:14px}
.mod summary .pm{margin-left:auto;color:var(--primary);transition:transform .25s}
.mod[open] summary .pm{transform:rotate(45deg)}
.mod .les{padding:0 18px 16px 66px;display:flex;flex-direction:column;gap:8px}
@media (max-width:520px){.mod .les{padding-left:18px}}
.mod .les div{display:flex;gap:9px;align-items:flex-start;font-size:14.5px;color:var(--muted);font-family:var(--ff-body);font-weight:500}
.mod .les .i{width:16px;height:16px;color:var(--primary);flex:none;margin-top:4px}
.fit{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media (max-width:640px){.fit{grid-template-columns:1fr}}
.fit .box{border:1px solid var(--border);border-radius:var(--r);padding:20px}
.fit .box h4{display:flex;align-items:center;gap:9px;font-size:16px;margin-bottom:12px}
.fit .box ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px}
.fit .box li{display:flex;gap:9px;align-items:flex-start;font-size:14.5px}
.fit .box li .i{width:17px;height:17px;flex:none;margin-top:3px}
.fit .yes h4 .i,.fit .yes li .i{color:var(--ok)}
.fit .no h4 .i,.fit .no li .i{color:var(--bad)}

.reveal-note{background:var(--primary-soft);border:1px dashed var(--primary);border-radius:var(--r-sm);padding:11px 15px;font-size:13px;color:var(--primary-strong);display:flex;gap:9px;align-items:flex-start}
.reveal-note .i{width:16px;height:16px;flex:none;margin-top:3px}
.hidden{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* --- SSR utilities (EduSite) --- */
.inp{font-family:var(--ff-body);font-size:15px;padding:12px 14px;border-radius:11px;border:1.5px solid var(--border-strong);background:var(--surface);color:var(--text);width:100%}
.inp:focus{border-color:var(--primary);outline:none}
.prose{color:var(--text);line-height:1.8}
.prose h2,.prose h3{font-family:var(--ff-head);margin:22px 0 10px}
.prose p{margin:0 0 14px}
.prose ul{padding-left:20px;margin:0 0 14px}
.toast .i{color:var(--tc,var(--ok))}