/* Brand MIDU/Vien PTTT - dung chung 3 trang pheu */
  /* ---------- FONTS (FZ Rubik + Lexend, đầy đủ subset tiếng Việt) ---------- */
  @font-face{font-family:"Fz Rubik";font-weight:400;font-style:normal;font-display:swap;src:url("fonts/fzrubik-400.woff2") format("woff2")}
  @font-face{font-family:"Fz Rubik";font-weight:500;font-style:normal;font-display:swap;src:url("fonts/fzrubik-500.woff2") format("woff2")}
  @font-face{font-family:"Fz Rubik";font-weight:700;font-style:normal;font-display:swap;src:url("fonts/fzrubik-700.woff2") format("woff2")}
  @font-face{font-family:"Fz Rubik";font-weight:900;font-style:normal;font-display:swap;src:url("fonts/fzrubik-900.woff2") format("woff2")}
  @font-face{font-family:"Lexend";font-weight:400;font-style:normal;font-display:swap;src:url("fonts/lexend-400-vietnamese.woff2") format("woff2");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
  @font-face{font-family:"Lexend";font-weight:400;font-style:normal;font-display:swap;src:url("fonts/lexend-400-latin-ext.woff2") format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
  @font-face{font-family:"Lexend";font-weight:400;font-style:normal;font-display:swap;src:url("fonts/lexend-400-latin.woff2") format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
  @font-face{font-family:"Lexend";font-weight:500;font-style:normal;font-display:swap;src:url("fonts/lexend-500-vietnamese.woff2") format("woff2");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
  @font-face{font-family:"Lexend";font-weight:500;font-style:normal;font-display:swap;src:url("fonts/lexend-500-latin-ext.woff2") format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
  @font-face{font-family:"Lexend";font-weight:500;font-style:normal;font-display:swap;src:url("fonts/lexend-500-latin.woff2") format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
  @font-face{font-family:"Lexend";font-weight:700;font-style:normal;font-display:swap;src:url("fonts/lexend-700-vietnamese.woff2") format("woff2");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
  @font-face{font-family:"Lexend";font-weight:700;font-style:normal;font-display:swap;src:url("fonts/lexend-700-latin-ext.woff2") format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
  @font-face{font-family:"Lexend";font-weight:700;font-style:normal;font-display:swap;src:url("fonts/lexend-700-latin.woff2") format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

  /* ---------- TOKENS ---------- */
  :root{
    --primary:#384B98; --magenta:#C1368D;
    --grad-brand:linear-gradient(90deg,#384B98 0%,#C1368D 100%);
    --grad-brand-rev:linear-gradient(90deg,#C1368D 0%,#384B98 100%);
    --sun:#EFCA3D; --lime:#E4E254;
    --ink:#221F1F; --canvas:#FFFFFF;
    --surface-soft:#EEF1FA; --surface-tint:#F7F4FB;
    --hairline:#DDE2F0; --hairline-strong:#8A8F9E;
    --grad-bubble:radial-gradient(circle at 32% 28%,#7C63BE,#5F469B);
    --grad-bubble-orange:radial-gradient(circle at 32% 28%,#FFA23D,#F68500);
    --success:#2E7D46; --error:#C93A3A;
    --indigo-50:#EEF1FA; --indigo-700:#2C3B7A; --indigo-800:#222E60; --indigo-900:#182147;
    --on-primary-soft:rgba(255,255,255,.94);
    --r-12:12px; --r-20:20px; --r-28:28px; --r-pill:999px;
    --shadow-card:0 8px 24px rgba(56,75,152,.10);
    --shadow-float:0 16px 40px rgba(56,75,152,.16);
    --font-display:"Fz Rubik",system-ui,sans-serif;
    --font-body:"Lexend","Fz Rubik",system-ui,sans-serif;
    --maxw:820px;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{margin:0;background:var(--canvas);color:var(--ink);
    font-family:var(--font-body);font-weight:400;font-size:17px;line-height:1.75;
    -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
  .wrap-wide{max-width:1120px;margin:0 auto;padding:0 22px}
  h1,h2,h3{font-family:var(--font-display);color:var(--primary);margin:0 0 16px;letter-spacing:-.01em}
  p{margin:0 0 16px}
  strong{font-weight:700}
  .hot{color:var(--magenta);font-weight:700}
  .fire{color:var(--error);font-weight:800}
  .big{font-size:1.14em;font-weight:800;letter-spacing:-.01em;line-height:1.25}
  .sun{color:var(--sun)}
  /* panel chữ - nền tint xen kẽ cho khối nhiều chữ */
  .tb{border-radius:var(--r-20);padding:22px 26px;margin:16px 0}
  .tb>:last-child{margin-bottom:0}
  .tb-indigo{background:var(--surface-soft)}
  .tb-purple{background:var(--surface-tint)}
  .tb-white{background:#fff;border:1px solid var(--hairline);box-shadow:var(--shadow-card)}
  /* logo lockup Viện */
  .brandlock{display:flex;flex-direction:column;align-items:center;gap:9px}
  .brandname{font-family:var(--font-display);font-weight:700;text-transform:uppercase;letter-spacing:1.2px;line-height:1.32;font-size:.82rem;max-width:330px}
  .hero .brandlock{margin:0 auto 14px}
  .hero .brandname{color:#fff}
  .hero .brandlock .logo{height:58px;margin:0;width:auto}
  footer .brandlock{margin:0 auto 14px}
  footer .brandname{color:var(--on-primary-soft);font-size:.72rem;letter-spacing:1px}
  footer .brandlock .logo{height:46px;margin:0;width:auto}
  a{color:var(--primary);text-decoration:underline;text-decoration-color:rgba(56,75,152,.4);text-underline-offset:2px;cursor:pointer}
  a:hover{color:var(--magenta)}
  :focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}
  .on-brand-gradient :focus-visible{outline-color:#fff}

  section{padding:54px 0}
  .soft{background:var(--surface-soft)}
  .eyebrow{display:inline-block;font-family:var(--font-display);font-weight:700;font-size:13px;
    letter-spacing:1.5px;line-height:1.54;text-transform:uppercase;color:var(--magenta);
    background:#fff;border:1px solid var(--hairline);border-radius:var(--r-pill);padding:7px 16px;margin:0 0 16px}
  .soft .eyebrow{background:var(--canvas)}
  h2{font-size:clamp(1.5rem,1.2rem+1.3vw,2rem);line-height:1.28}
  .lead{font-family:var(--font-body);font-weight:500;font-size:1.14rem;color:var(--ink)}

  /* HERO */
  .hero{background:var(--grad-brand);color:#fff;padding:20px 0 50px;text-align:center;overflow:hidden;position:relative}
  .hero .logo{height:38px;margin:0 auto 22px;display:block}
  .hero .eyebrow{color:#fff;background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.34)}
  .hero h1{color:#fff;font-weight:900;font-size:clamp(1.9rem,1.35rem+2.4vw,2.9rem);line-height:1.16;max-width:800px;margin:0 auto 14px}
  .hero .course{display:inline-block;font-family:var(--font-display);font-weight:500;color:#fff;font-size:clamp(1rem,.92rem+.55vw,1.22rem);line-height:1.42;max-width:790px;margin:8px auto 18px;background:rgba(255,255,255,.12);border:1.6px solid rgba(255,255,255,.55);border-radius:14px;padding:12px 24px;box-shadow:0 6px 18px rgba(0,0,0,.12)}
  .hero .course b{font-weight:800;letter-spacing:.3px}
  .hero .sub{color:var(--on-primary-soft);font-size:clamp(1rem,.95rem+.4vw,1.14rem);max-width:640px;margin:0 auto 22px}
  .hero__bubbles{position:absolute;inset:0;pointer-events:none;z-index:0}
  .hero__bubbles .bubble{position:absolute;opacity:.5}
  .hero>.wrap{position:relative;z-index:1}
  .kickoff{display:inline-flex;align-items:center;gap:10px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.34);
    border-radius:var(--r-pill);padding:9px 18px;margin:0 0 24px;color:#fff;font-weight:500;font-size:.96rem;flex-wrap:wrap;justify-content:center}
  .kickoff b{font-weight:700}
  .kickoff svg{flex:0 0 auto}

  /* BUTTONS */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.04rem;
    border-radius:var(--r-pill);padding:15px 32px;border:0;cursor:pointer;text-decoration:none;transition:transform .12s ease,box-shadow .12s ease}
  .btn:hover{transform:translateY(-2px)}
  .btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--shadow-float)}
  .btn-primary:active{background:linear-gradient(90deg,var(--indigo-700),#9c2c72)}
  .btn-white{background:#fff;color:var(--primary);box-shadow:0 10px 28px rgba(0,0,0,.18)}
  .btn-white:hover{background:var(--indigo-50)}
  .btn:disabled{background:#EBECEF;color:#9C9FAB;box-shadow:none;cursor:not-allowed;transform:none}
  .btn-note{font-size:.82rem;line-height:1.667;color:var(--hairline-strong);margin-top:12px}

  /* CARDS */
  .mech{background:var(--surface-tint);border:1px solid var(--hairline);border-left:6px solid var(--magenta);border-radius:var(--r-20);padding:22px 24px;margin:18px 0;font-size:1.06rem}
  .mech strong{color:var(--primary)}
  .honest{background:#fff;border:1px solid var(--hairline);border-radius:var(--r-28);padding:26px 28px;box-shadow:var(--shadow-card)}
  .honest p{margin:0 0 12px}.honest p:last-child{margin:0}

  /* NỘI DUNG ĐÀO TẠO */
  .curri{list-style:none;padding:0;margin:22px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .curri li{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--hairline);border-radius:var(--r-20);padding:18px 20px;box-shadow:var(--shadow-card)}
  .curri .n{flex:0 0 auto;width:32px;height:32px;border-radius:var(--r-pill);background:var(--grad-brand);color:#fff;font-family:var(--font-display);font-weight:700;font-size:.95rem;display:inline-flex;align-items:center;justify-content:center}
  .curri b{font-family:var(--font-body);font-weight:500;color:var(--ink);line-height:1.5}

  /* AUTHOR */
  .author{display:grid;grid-template-columns:260px 1fr;gap:40px;align-items:center}
  .author__panel{position:relative;background:var(--grad-brand);border-radius:var(--r-28);padding:20px 20px 0;box-shadow:var(--shadow-float);overflow:hidden;text-align:center}
  .author__panel img{display:block;width:100%;height:auto;position:relative;z-index:1;filter:drop-shadow(0 12px 18px rgba(0,0,0,.22))}
  .author__panel .bubble{position:absolute;z-index:0;opacity:.85}
  .author__name{margin-top:16px;text-align:center}
  .author__name b{font-family:var(--font-display);font-size:1.15rem;color:var(--primary);display:block}
  .author__name span{font-size:.9rem;color:var(--hairline-strong)}

  .bubble{border-radius:50%;background:var(--grad-bubble);box-shadow:inset 0 -6px 14px rgba(0,0,0,.14),0 8px 18px rgba(56,75,152,.18)}
  .bubble.orange{background:var(--grad-bubble-orange)}

  /* ĐĂNG KÝ + PRICE + FORM */
  .price{background:var(--grad-brand);color:#fff;border-radius:var(--r-28) var(--r-28) 0 0;padding:34px 30px 30px;text-align:center;box-shadow:var(--shadow-float)}
  .price .eyebrow{color:#fff;background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.34)}
  .price h3{color:#fff;margin:0 0 4px;font-size:1.25rem}
  .price .amt{font-family:var(--font-display);font-weight:900;font-size:clamp(2.9rem,2.2rem+2.8vw,3.9rem);line-height:1.08;margin:8px 0 2px;font-feature-settings:"tnum"}
  .price .tag{color:var(--on-primary-soft);margin:0 0 6px}
  .price ul{list-style:none;padding:0;margin:20px auto 0;max-width:460px;text-align:left}
  .price li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-top:1px solid rgba(255,255,255,.18);color:#fff}
  .price li:first-child{border-top:0}
  .price li svg{flex:0 0 auto;margin-top:4px;color:var(--sun)}

  .reg{background:#fff;border:1px solid var(--hairline);border-top:0;border-radius:0 0 var(--r-28) var(--r-28);padding:28px 30px;box-shadow:var(--shadow-card)}
  .reg h3{margin:0 0 4px;font-size:1.2rem}
  .reg .sub{color:var(--hairline-strong);margin:0 0 18px;font-size:.96rem}
  .field{margin:0 0 14px}
  .field label{display:block;font-weight:500;font-size:.92rem;margin:0 0 6px;color:var(--ink)}
  .field input{width:100%;padding:14px 16px;font-size:1rem;font-family:inherit;color:var(--ink);border:1.5px solid var(--hairline-strong);border-radius:var(--r-12);background:#fff}
  .field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(56,75,152,.14)}
  .reg .btn-primary{width:100%;margin-top:4px}
  .form-msg{margin:12px 0 0;text-align:center;font-weight:500;min-height:1.2em;font-size:.94rem;display:flex;gap:8px;justify-content:center;align-items:center}
  .form-msg.err{color:var(--error)}

  .pay{display:none;margin-top:22px;border-top:1px dashed var(--hairline);padding-top:22px}
  .pay.show{display:block}
  .pay .ok{display:flex;gap:10px;align-items:flex-start;background:#EAF6EE;border:1px solid #BFE3CB;color:var(--success);border-radius:var(--r-12);padding:12px 16px;font-weight:500;font-size:.95rem;margin:0 0 18px}
  .pay .ok svg{flex:0 0 auto;margin-top:2px}
  .pay-grid{display:grid;grid-template-columns:190px 1fr;gap:24px;align-items:center}
  .pay-qr{background:#fff;border:1px solid var(--hairline);border-radius:var(--r-20);padding:12px;box-shadow:var(--shadow-card)}
  .pay-qr img{display:block;width:100%;height:auto;border-radius:8px}
  .pay-info{margin:0}
  .pay-info .row{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-top:1px solid var(--hairline);font-size:.96rem}
  .pay-info .row:first-child{border-top:0}
  .pay-info .row span{color:var(--hairline-strong)}
  .pay-info .row b{font-weight:700;color:var(--ink);text-align:right;word-break:break-word}
  .pay-info .memo b{color:var(--magenta)}
  .pay-note{font-size:.9rem;color:var(--hairline-strong);line-height:1.6;margin:16px 0 0}
  #pay-poll{color:var(--primary);font-weight:500}
  .pay-done{display:none;text-align:center;background:#EAF6EE;border:1px solid #BFE3CB;border-radius:var(--r-20);padding:28px 24px;margin-top:22px}
  .pay-done.show{display:block}
  .pay-done>svg{color:var(--success)}
  .pay-done h3{color:var(--success);margin:10px 0 6px}
  .pay-done p{margin:0;color:#256b3a}

  /* FAQ */
  details{background:#fff;border:1px solid var(--hairline);border-radius:var(--r-12);padding:2px 22px;margin:12px 0;box-shadow:var(--shadow-card)}
  summary{font-family:var(--font-display);font-weight:700;color:var(--primary);cursor:pointer;padding:16px 0;font-size:1.02rem;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px}
  summary::-webkit-details-marker{display:none}
  summary .chev{flex:0 0 auto;transition:transform .18s ease;color:var(--magenta)}
  details[open] summary .chev{transform:rotate(180deg)}
  details p{margin:0 0 16px;color:var(--ink)}

  .ps{background:#fff;border:1px solid var(--hairline);border-left:6px solid var(--sun);border-radius:var(--r-20);padding:22px 26px;box-shadow:var(--shadow-card)}
  .ps p{margin:0}

  footer{background:var(--grad-brand-rev);color:#fff;padding:36px 0 42px;text-align:center}
  footer .logo{height:32px;margin:0 0 14px}
  footer p{color:var(--on-primary-soft);font-size:.85rem;line-height:1.667;margin:0 auto;max-width:560px}

  @media(max-width:720px){
    section{padding:40px 0}
    .curri{grid-template-columns:1fr}
    .author{grid-template-columns:1fr;gap:22px;justify-items:center;text-align:center}
    .author__panel{max-width:240px}
    .pay-grid{grid-template-columns:1fr;gap:16px;justify-items:center}
    .pay-qr{max-width:220px}
    .pay-info{width:100%}
  }