/* ============================================================
   Transformation Coaching — VCI International
   Clean rebuild. Brand tokens + sections.
   ============================================================ */
:root{
  --green:#73A549;
  --green-d:#5e8c3a;
  --lime:#A7D85B;
  --teal:#1D4D54;
  --navy:#000321;
  --ink:#171717;
  --paper:#F6F6FF;
  --text:#2c3345;
  --muted:#5b6472;
  --line:#e4e7ee;
  --radius:14px;
  --container:1240px;
  /* Anton (Google Fonts, có subset tiếng Việt) cho mọi tiêu đề. Để dễ đọc: line-height rộng
     + giãn chữ nhẹ, tránh dấu tiếng Việt dính vào nhau. Inter là fallback khi Anton chưa tải. */
  --brand:'Anton','Inter',-apple-system,Segoe UI,Roboto,sans-serif;
  --display:'Anton','Inter',-apple-system,Segoe UI,Roboto,sans-serif;
  --body:'Inter',-apple-system,Segoe UI,Roboto,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--body);color:var(--text);
  font-size:16px;line-height:1.7;background:#fff;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
p{margin:0 0 1em}

.container{max-width:var(--container);margin:0 auto;padding:0 20px}
.narrow{max-width:820px;margin-left:auto;margin-right:auto}
.center{text-align:center}
.light{color:#fff !important}
.green{color:var(--green) !important}
.lime{color:var(--lime) !important}

/* ---- Typography ---- */
.display{
  font-family:var(--brand);font-weight:400;letter-spacing:.5px;
  line-height:1.18;font-size:clamp(2.4rem,5vw,4rem);text-transform:uppercase;
  margin:0 0 .4em;color:var(--green);
}
.section-title{
  font-family:var(--display);font-weight:400;line-height:1.32;letter-spacing:.5px;
  font-size:clamp(1.7rem,3.4vw,2.6rem);text-transform:uppercase;margin:0 0 .6em;color:var(--ink);
}
.section-title.sm{font-size:clamp(1.4rem,2.6vw,2rem)}
.lead{font-size:1.15rem;font-weight:500;margin-bottom:1.2em}
.eyebrow{font-weight:600;letter-spacing:1px;text-transform:uppercase;color:var(--muted);font-size:.9rem}

/* ---- Buttons ---- */
.btn{
  display:inline-block;font-family:var(--body);font-weight:700;text-decoration:none;
  padding:13px 30px;border-radius:8px;font-size:.95rem;letter-spacing:.3px;
  text-transform:uppercase;transition:.2s;cursor:pointer;border:0;
}
.btn-green{background:var(--green);color:#fff}
.btn-green:hover{background:var(--green-d)}
.btn-lime{background:var(--lime);color:var(--navy)}
.btn-lime:hover{filter:brightness(.95)}
.btn-lg{padding:16px 40px;font-size:1.05rem}

/* ---- Header ---- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:84px}
.logo img{height:62px;width:auto}
.icf-badge{height:56px;width:auto}

/* ---- Hero ---- */
.hero{padding:48px 0 64px}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:center}
.hero-badge{display:block;width:96px;height:auto;margin:0 0 14px}
.hero-copy .display{margin-bottom:.35em;font-size:clamp(2.2rem,4.6vw,3.8rem);white-space:nowrap}
.hero-sub{font-size:1.25rem;font-weight:600;color:var(--ink);margin-bottom:1.2em}
.hero-bullets{list-style:none;padding:0;margin:0 0 1.8em}
.hero-bullets li{position:relative;padding-left:30px;margin-bottom:.7em;font-weight:500;font-size:1.05rem}
.hero-bullets li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:800}
.hero-media{position:relative}
.hero-photo{border-radius:24px;width:100%;object-fit:cover}

/* ---- Section helpers for dark/bg ---- */
.founder-letter,.for-whom,.you-get,.differences,.founder-profile{
  position:relative;color:#fff;background:var(--ink);
  background-image:var(--bg);background-size:cover;background-position:center;
}
.founder-letter .overlay,.for-whom .overlay,.you-get .overlay,
.differences .overlay,.founder-profile .overlay{
  position:absolute;inset:0;background:rgba(8,12,20,.72);
}
.founder-letter .container,.for-whom .container,.you-get .container,
.differences .container,.founder-profile .container{position:relative;z-index:1}

/* ---- Founder letter ---- */
.founder-letter{padding:72px 0}
.letter-inner{max-width:880px;margin:0 auto}
.letter-greet{font-weight:700;font-size:1.1rem;color:var(--lime);margin-bottom:1.2em}
.founder-letter p{color:#e9edf2}

/* ---- Narrative (2 cột text + ảnh, xen kẽ) ---- */
.narrative{padding:56px 0}
.narr-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:stretch}
.narr-grid.reverse .narr-media{order:-1}
.narr-copy p{color:var(--muted);margin-bottom:.9em}
.narr-media{display:flex}
.narr-media img{width:100%;height:100%;border-radius:16px;object-fit:cover}

/* ---- Why ---- */
.why{padding:64px 0;background:var(--paper)}
.why-photo{margin:24px 0 32px}
.why-photo img{border-radius:16px;width:100%}
.why-list{display:flex;flex-direction:column;gap:22px}
.why-item h3{font-family:var(--display);font-weight:400;font-size:1.3rem;line-height:1.3;margin:0 0 .35em;color:var(--green)}
.why-item p{color:var(--muted)}
.why-closing{margin-top:32px;font-weight:600}

/* ---- Card grids ---- */
.card-grid{display:grid;gap:26px}
.card-grid.cols-2{grid-template-columns:repeat(2,1fr)}
.card-grid.cols-3{grid-template-columns:repeat(3,1fr)}

/* ---- Benefits (3 mục | ảnh | 3 mục) ---- */
.benefits{padding:64px 0}
.benefit-3col{display:grid;grid-template-columns:1fr 1.05fr 1fr;gap:36px;align-items:stretch;margin-top:28px}
.benefit-col{display:flex;flex-direction:column;justify-content:center;gap:28px}
.benefit-3col .benefit-col:last-child{text-align:right}
.benefit-item h3{font-family:var(--display);font-weight:400;color:var(--ink);font-size:1.15rem;margin:0 0 .4em;text-transform:uppercase;letter-spacing:.3px;line-height:1.2}
.benefit-item p{color:var(--muted);font-size:.95rem;margin:0}
.benefit-photo{display:flex}
.benefit-photo img{width:100%;height:100%;border-radius:16px;object-fit:cover}

/* ---- For whom ---- */
.for-whom{padding:72px 0}
.whom-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.whom-card img{aspect-ratio:3/2;object-fit:cover;width:100%;display:block}
.whom-body{padding:24px}
.whom-body h3{font-family:var(--display);font-weight:400;font-size:1.15rem;margin:0 0 .5em}
.whom-body p{color:#d7dce3;font-size:.97rem;margin:0}

/* ---- Certificate ---- */
.certificate{padding:64px 0}
.certificate p{color:var(--muted);max-width:760px;margin:0 auto 28px}
.cert-img{max-width:760px;margin:0 auto;border-radius:12px}

/* ---- You get ---- */
.you-get{padding:72px 0}
.get-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:26px}
.get-card h3{font-family:var(--display);font-weight:400;font-size:1.15rem;margin:0 0 .5em}
.get-card p{color:#d7dce3;font-size:.97rem;margin:0}

/* ---- Feature blocks ---- */
.features{padding:40px 0;background:var(--paper)}
.feat{border-radius:24px;padding:44px 48px;margin-bottom:28px}
.feat:last-child{margin-bottom:0}
.feat--teal{background:var(--teal);color:#fff}
.feat--lime{background:var(--lime);color:var(--navy)}
.feat-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:44px;align-items:stretch}
.feat-media{display:flex}
.feat-media img{width:100%;height:100%;border-radius:14px;display:block;object-fit:cover}
.feat-head{display:flex;align-items:center;gap:18px;margin-bottom:18px}
.feat-num{flex:none;width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
  font-family:var(--brand);font-size:1.4rem;line-height:1}
.feat--teal .feat-num{background:var(--lime);color:var(--teal)}
.feat--lime .feat-num{background:var(--teal);color:#fff}
.feat-title{font-family:var(--display);font-weight:400;font-size:clamp(20px,2.3vw,29px);line-height:1.3;margin:0;text-transform:uppercase;letter-spacing:.4px}
.feat--lime .feat-title{color:var(--navy)}
.feat-copy p{color:inherit;opacity:.92;margin:0 0 14px}
.feat--lime .feat-copy p{opacity:.85}
.feat-cta{text-align:center;margin-top:30px}
.feat-cta .btn{border-radius:999px}

/* ---- 10 Differences ---- */
.differences{padding:72px 0}
.diff-list{max-width:900px;margin:0 auto 32px;display:flex;flex-direction:column;gap:16px}
.diff-item{border-radius:8px;overflow:hidden;background:rgba(8,18,16,.55)}
.diff-item>summary{list-style:none;cursor:pointer;background:var(--green);color:#0e1f14;
  font-family:var(--display);text-transform:uppercase;letter-spacing:.3px;font-size:1.02rem;
  padding:15px 22px;display:flex;align-items:center;gap:8px}
.diff-item>summary::-webkit-details-marker{display:none}
.diff-item>summary::after{content:"+";margin-left:auto;font-size:1.5rem;line-height:1;font-weight:700}
.diff-item[open]>summary::after{content:"–"}
.diff-num{font-family:var(--brand)}
.diff-item p{color:#dfe4e6;font-size:.97rem;line-height:1.65;margin:0;padding:18px 22px}
.diff-closing{font-size:1.15rem;font-weight:600;max-width:820px;margin:0 auto}
.diff-cta{margin-top:28px}
.diff-cta .btn{border-radius:999px}

/* ---- Curriculum ---- */
.curriculum{padding:64px 0;background:var(--paper)}
.overview-list{max-width:760px;margin:0 auto 36px;columns:2;gap:30px;padding-left:18px}
.overview-list li{margin-bottom:.5em}
.modules{display:flex;flex-direction:column;gap:22px}
.module-card{background:#fff;border:1px solid var(--line);border-left:5px solid var(--green);border-radius:12px;padding:26px 28px}
.module-card h3{font-family:var(--display);font-weight:400;font-size:1.4rem;margin:0 0 .4em;text-transform:uppercase;color:var(--green)}
.module-meta{margin:.15em 0;color:var(--muted);font-size:.95rem;font-weight:500}
.module-intro{margin:.4em 0 0;padding-left:20px;color:var(--muted)}
.module-intro li{margin:.3em 0}
.module-panel{border:1px solid #d7e6c9;background:#f3f8ec;border-radius:8px;margin-top:14px;overflow:hidden}
.module-panel summary{cursor:pointer;padding:14px 18px;font-weight:700;color:var(--green-d);list-style:none;position:relative}
.module-panel summary::-webkit-details-marker{display:none}
.module-panel summary::after{content:"⌄";position:absolute;right:18px;top:11px;font-size:1.2rem}
.module-panel[open] summary::after{content:"⌃"}
.module-panel .acc-body{padding:0 18px 16px}
.module-panel ol{margin:.3em 0;padding-left:20px}
.module-panel ol li{margin:.35em 0;color:var(--muted)}

/* ---- Pricing ---- */
.pricing{padding:64px 0;background:var(--teal);color:#fff;text-align:center}
.pricing-eyebrow{text-transform:uppercase;letter-spacing:1px;font-weight:600;opacity:.9;margin-bottom:.3em}
.pricing .display{margin-bottom:.7em}
.pricing-collage{max-width:780px;margin:0 auto 38px}
.pricing-collage img{width:100%;display:block}
.pricing-grid{display:grid;grid-template-columns:1fr 1fr;max-width:960px;margin:0 auto;
  text-align:left;border-radius:16px;overflow:hidden;box-shadow:0 22px 55px rgba(0,0,0,.3)}
.pricing-offer{background:#10211d;color:#fff;padding:40px 36px}
.stars{color:#f5b50a;letter-spacing:4px;margin-bottom:10px}
.pricing-offer h3{font-family:var(--display);font-weight:400;text-transform:uppercase;color:#fff;margin:0 0 18px;font-size:1.5rem}
.check-list{list-style:none;padding:0;margin:0 0 24px}
.check-list li{position:relative;padding-left:30px;margin-bottom:.7em}
.check-list li::before{content:"✓";position:absolute;left:0;color:var(--lime);font-weight:800}
.price{margin:0}
.price-old{display:block;text-decoration:line-through;color:#9fb0ab}
.price-new{display:block;font-family:var(--brand);color:var(--lime);font-size:1.15rem}
.price-new strong{font-size:1.9rem;font-weight:400;display:block}
.price-new small{font-family:var(--body);font-size:.82rem;color:#cfe6b0;display:block;margin-top:2px}
.pricing-signup{background:#fff;color:var(--ink);padding:40px 36px;display:flex;flex-direction:column}
.signup-title{font-family:var(--display);font-weight:400;text-transform:uppercase;color:var(--teal);margin:0 0 14px;font-size:1.5rem;line-height:1.25}
.pricing-signup p{color:var(--muted);margin:0 0 6px}
.signup-btn{display:block;text-align:center;width:100%;margin:18px 0 16px}
.btn-teal-d{background:var(--teal);color:#fff}
.btn-teal-d:hover{background:#163b41}
.fineprint{font-size:.8rem;color:var(--muted);margin:auto 0 0}

/* ---- Testimonials ---- */
.testimonials{padding:64px 0}
.testimonials.alt{background:var(--paper)}
.tcard-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:44px 34px;margin-top:38px}
.tcard{margin:0;display:flex;flex-direction:column}
.tcard img{width:100%;aspect-ratio:1/1;object-fit:cover;object-position:center top;border-radius:10px;margin-bottom:18px}
.tcard-quote{font-family:var(--body);font-weight:700;color:var(--ink);font-size:1.06rem;line-height:1.35;margin:0 0 12px}
.tcard-body p{color:var(--muted);font-size:.92rem;line-height:1.62;margin:0 0 10px}
.tcard-author{margin-top:auto;padding-top:10px}
.tcard-author strong{display:block;color:var(--ink);font-size:1rem}
.tcard-author span{display:block;color:var(--muted);font-size:.88rem}

/* ---- Founder profile ---- */
.founder-profile{padding:72px 0}
.founder-intro{max-width:900px;margin:0 0 48px}
.founder-name{font-family:var(--brand);font-size:1.8rem;margin:.1em 0 .8em;color:var(--lime)}
.founder-quote{border-left:4px solid var(--green);padding-left:22px}
.founder-quote p{color:#dfe4ea;margin:0 0 1em}
.founder-quote p:last-child{margin-bottom:0}
.persona-grid{display:grid;grid-template-columns:1fr 1fr;gap:38px 44px}
.persona-card{margin:0}
.persona-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;margin-bottom:18px;display:block}
.persona-card h3{font-family:var(--display);font-weight:600;text-transform:uppercase;font-size:1.1rem;letter-spacing:.3px;margin:0 0 .5em;line-height:1.25}
.persona-card p{color:#dfe4ea;font-size:.95rem;line-height:1.6;margin:0}

/* ---- Accordion ---- */
.about-vci{padding:64px 0}
.about-vci .lead{color:var(--muted)}
.accordion{margin-top:20px}
.acc-item{border:1px solid var(--line);border-radius:10px;margin-bottom:12px;background:#fff;overflow:hidden}
.acc-item summary{cursor:pointer;padding:18px 22px;font-weight:700;list-style:none;position:relative;color:var(--ink)}
.acc-item summary::-webkit-details-marker{display:none}
.acc-item summary::after{content:"+";position:absolute;right:22px;top:16px;font-size:1.4rem;color:var(--green);font-weight:700}
.acc-item[open] summary::after{content:"–"}
.acc-body{padding:0 22px 18px;color:var(--muted)}
.acc-body p{margin:.4em 0}

/* ---- Results (video testimonials) ---- */
.results{padding:64px 0}
.video-thumb{position:relative;aspect-ratio:16/10;border-radius:12px;overflow:hidden;
  background:linear-gradient(135deg,var(--teal),#0c272c);display:grid;place-items:center}
.video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.video-thumb .play{position:relative;z-index:1}
.video-thumb[data-yt]{cursor:pointer}
.video-thumb[data-yt]:hover .play{transform:scale(1.06);transition:transform .15s}
.video-thumb .play{width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.92);
  position:relative;box-shadow:0 6px 18px rgba(0,0,0,.25)}
.video-thumb .play::after{content:"";position:absolute;top:50%;left:55%;transform:translate(-50%,-50%);
  border-style:solid;border-width:11px 0 11px 19px;border-color:transparent transparent transparent var(--teal)}
.result-feature{display:grid;grid-template-columns:.92fr 1.08fr;gap:34px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;margin-top:26px;
  box-shadow:0 6px 20px rgba(20,30,50,.05)}
.result-feature-body h3{font-size:1.3rem;margin:0 0 12px;line-height:1.2}
.result-feature-body p{color:var(--muted);margin:.55em 0;font-size:.95rem;line-height:1.6}
.result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:26px}
.result-vid{margin:0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;
  box-shadow:0 6px 20px rgba(20,30,50,.05);display:flex;flex-direction:column}
.result-vid .video-thumb{margin-bottom:16px}
.result-vid h3{font-size:1.06rem;margin:0 0 10px;line-height:1.3}
.result-vid p{color:var(--muted);font-size:.92rem;line-height:1.6;margin:0 0 14px}
.result-vid figcaption{margin-top:auto;padding-top:6px}
.result-vid figcaption strong{display:block;color:var(--ink)}
.result-vid figcaption span{display:block;color:var(--muted);font-size:.88rem}

/* ---- Program intro ---- */
.program-intro{padding:72px 0}
.teal-bg{background:var(--teal);color:#fff}
.program-intro .light-p{color:#dfe4ea}

/* ---- Guarantee ---- */
.guarantee{padding:64px 0;background:var(--navy);color:#fff}
.guarantee-grid{display:grid;grid-template-columns:280px 1fr;gap:48px;align-items:center}
.guarantee-badge{width:100%;max-width:280px;margin:0 auto}
.guarantee p{color:#cfd4de}

/* ---- FAQ ---- */
.faq{padding:64px 0;background:var(--paper)}
.faq .acc-item{border:0;border-radius:8px;margin-bottom:12px;background:var(--teal);overflow:hidden}
.faq .acc-item summary{background:var(--green);color:#0e1f14;padding:16px 50px 16px 20px}
.faq .acc-item[open] summary{background:var(--teal);color:#fff}
.faq .acc-item summary::after{color:#0e1f14}
.faq .acc-item[open] summary::after{color:#fff}
.faq .acc-body{color:#eef3f2}
.faq .acc-body p{color:#eef3f2}
.faq-closing{font-weight:600;font-size:1.1rem;margin:28px 0}

/* ---- Footer ---- */
.site-footer{background:var(--ink);color:#cfd4de;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr;gap:40px;padding-bottom:36px}
.site-footer h3{font-family:var(--display);font-weight:400;font-size:1.3rem;text-transform:uppercase}
.site-footer p{font-size:.95rem;margin:.4em 0}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links h4{margin:0 0 8px;font-weight:700}
.footer-links a{text-decoration:none;opacity:.85}
.footer-links a:hover{opacity:1;color:var(--lime)}
.copyright{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;text-align:center;font-size:.85rem;background:var(--teal);color:#fff}

/* ---- Floating CTA ---- */
.floating-cta{position:fixed;right:20px;bottom:20px;z-index:60;background:var(--green);color:#fff;
  text-decoration:none;font-weight:700;padding:14px 24px;border-radius:40px;box-shadow:0 10px 30px rgba(0,0,0,.25);
  text-transform:uppercase;font-size:.9rem}
.floating-cta:hover{background:var(--green-d)}

/* ============ RESPONSIVE ============ */
@media(max-width:900px){
  .hero-grid,.feat-grid,.guarantee-grid,.narr-grid{grid-template-columns:1fr;gap:32px}
  .persona-grid{grid-template-columns:1fr;gap:30px}
  .pricing-grid{grid-template-columns:1fr}
  .hero-copy .display{white-space:normal}
  .narr-grid.reverse .narr-media{order:0}
  .benefit-3col{grid-template-columns:1fr;gap:24px}
  .benefit-3col .benefit-col:last-child{text-align:left}
  .benefit-photo{order:-1}
  .feat-media{order:-1}
  .narr-media img,.feat-media img{height:auto}
  .feat{padding:32px 24px}
  .card-grid.cols-3,.why-list,.modules,.footer-grid,.tcard-grid,.result-grid{grid-template-columns:1fr 1fr}
  .result-feature{grid-template-columns:1fr;gap:22px}
  .overview-list{columns:1}
}
@media(max-width:600px){
  body{font-size:16px}
  .card-grid.cols-2,.card-grid.cols-3,.why-list,.modules,.footer-grid,.tcard-grid,.result-grid{grid-template-columns:1fr}
  .hero{padding:36px 0}
  .pricing-card{padding:26px}
  .guarantee-grid{text-align:center}
}