/* =========================================================================
   ks-redesign.css — คลีนดีไซน์ใหม่ (johnstocker-style) สำหรับ 2 หน้า:
   หน้าแรก (site/index) + รายละเอียดคอร์ส (course/main/view)
   ทุกกฎ scope อยู่ใต้ .ksr และคลาสคอมโพเนนต์ขึ้นต้น ksr- เพื่อกันชน
   Bootstrap / ธีม Sash บน element ที่ใช้ร่วมทุกหน้า
   ========================================================================= */

.ksr{
  --ksr-primary:#1565d8;
  --ksr-deep:#0d47a1;
  --ksr-bright:#2979ff;
  --ksr-ink:#1a2433;
  --ksr-muted:#6b7689;
  --ksr-faint:#98a1b0;
  --ksr-border:#eceff4;
  --ksr-border2:#e8edf4;
  --ksr-tint:#eaf2ff;
  --ksr-tint2:#eef4ff;
  --ksr-alt:#f7f9fc;
  --ksr-green:#1ca65b;
  --ksr-orange:#f5a623;
  --ksr-line:#06c755;
  --ksr-rcard:18px;
  --ksr-rlg:26px;
  --ksr-pill:999px;
  --ksr-sh-sm:0 6px 18px rgba(21,101,216,.08);
  --ksr-sh:0 16px 34px rgba(21,101,216,.12);
  --ksr-sh-lg:0 30px 60px rgba(13,71,161,.16);
  color:var(--ksr-ink);
  font-family:"Prompt","Kanit",system-ui,-apple-system,"Segoe UI",sans-serif;
  line-height:1.65;
}

/* ---- base element scoping (กันรั่วออกนอกหน้า) ---- */
.ksr h1,.ksr h2,.ksr h3,.ksr h4{margin:0;line-height:1.2;color:var(--ksr-ink);font-weight:700}
.ksr p{margin:0}
.ksr a{text-decoration:none}
.ksr a:not(.ksr-btn){color:inherit}
.ksr img{max-width:100%}
.ksr ul{margin:0}
.ksr .ksr-accent{color:var(--ksr-primary)}

/* ---- section rhythm ---- */
.ksr-sec{margin:0 0 56px}
.ksr-head{max-width:640px;margin:0 0 30px}
.ksr-head.center{margin-left:auto;margin-right:auto;text-align:center}
.ksr-head h2{font-size:clamp(25px,3.4vw,34px);letter-spacing:-.01em;margin:0 0 8px}
.ksr-head p{color:var(--ksr-muted);font-size:16px;margin:0}
.ksr-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:26px}
.ksr-head-row .ksr-head{margin-bottom:0}
.ksr-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;
  color:var(--ksr-primary);background:var(--ksr-tint);
  padding:6px 13px;border-radius:var(--ksr-pill);margin-bottom:12px;
}
.ksr-seeall{flex:none;color:var(--ksr-primary);font-weight:600;font-size:15px;white-space:nowrap}
.ksr-seeall:hover{text-decoration:underline}

/* ---- buttons ---- */
.ksr-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-weight:600;font-size:15px;line-height:1;cursor:pointer;
  padding:13px 22px;border-radius:13px;border:1.5px solid transparent;
  transition:transform .15s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease;
  white-space:nowrap;text-align:center;
}
.ksr-btn i{font-size:15px}
.ksr-btn-primary{background:var(--ksr-primary);color:#fff;box-shadow:var(--ksr-sh-sm)}
.ksr-btn-primary:hover{background:var(--ksr-deep);color:#fff;box-shadow:var(--ksr-sh);transform:translateY(-2px)}
.ksr-btn-ghost{background:#fff;color:var(--ksr-primary);border-color:var(--ksr-border2)}
.ksr-btn-ghost:hover{border-color:var(--ksr-primary);background:var(--ksr-tint2);color:var(--ksr-primary);transform:translateY(-2px)}
.ksr-btn-soft{background:var(--ksr-tint);color:var(--ksr-primary)}
.ksr-btn-soft:hover{background:var(--ksr-tint2);color:var(--ksr-primary)}
.ksr-btn-success{background:var(--ksr-green);color:#fff;box-shadow:0 8px 20px rgba(28,166,91,.25)}
.ksr-btn-success:hover{filter:brightness(.96);color:#fff;transform:translateY(-2px)}
.ksr-btn-lg{padding:15px 28px;font-size:16px}
.ksr-btn-sm{padding:9px 15px;font-size:13.5px;border-radius:11px}
.ksr-btn-block{display:flex;width:100%}
/* ปุ่ม <a class="ksr-btn" onclick> ไม่มี href โดน reboot a:not([href]):not([tabindex]){color:inherit} (spec 0,2,1) ทับสี → บังคับสีปุ่มกลับด้วย spec ที่สูงกว่า */
.ksr a.ksr-btn.ksr-btn-primary,.ksr a.ksr-btn.ksr-btn-primary i{color:#fff}
.ksr a.ksr-btn.ksr-btn-success,.ksr a.ksr-btn.ksr-btn-success i{color:#fff}
.ksr a.ksr-btn.ksr-btn-ghost,.ksr a.ksr-btn.ksr-btn-ghost i{color:var(--ksr-primary)}
.ksr a.ksr-btn.ksr-btn-white,.ksr a.ksr-btn.ksr-btn-white i{color:var(--ksr-primary)}

/* ---- pills / chips ---- */
.ksr-pill-row{display:flex;flex-wrap:wrap;gap:9px}
.ksr-pill{
  display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:500;
  color:var(--ksr-muted);background:#fff;border:1.5px solid var(--ksr-border2);
  padding:8px 15px;border-radius:var(--ksr-pill);transition:all .18s ease;
}
.ksr-pill:hover{border-color:var(--ksr-primary);color:var(--ksr-primary)}
.ksr-pill.is-active{background:var(--ksr-primary);border-color:var(--ksr-primary);color:#fff}

/* =======================================================================
   HERO
   ===================================================================== */
.ksr-hero{
  position:relative;overflow:hidden;border-radius:var(--ksr-rlg);
  background:#fff;border:1px solid var(--ksr-border);box-shadow:var(--ksr-sh-sm);
  padding:40px;margin:8px 0 46px;
}
.ksr-hero::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(55% 55% at 85% 6%, rgba(41,121,255,.12), transparent 70%),
    radial-gradient(45% 45% at 4% 96%, rgba(21,101,216,.08), transparent 70%);
}
.ksr-hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.ksr-hero-copy{max-width:600px}
.ksr-hero-copy h1{font-size:clamp(28px,4vw,46px);letter-spacing:-.02em;margin:14px 0 0}
.ksr-hero-sub{margin-top:16px;font-size:clamp(15px,1.5vw,18px);color:var(--ksr-muted);max-width:520px}
.ksr-hero-cats{margin-top:22px}
.ksr-search{
  margin-top:14px;display:flex;align-items:center;gap:8px;max-width:520px;
  background:#fff;border:1.5px solid var(--ksr-border2);border-radius:15px;
  padding:7px 7px 7px 16px;box-shadow:var(--ksr-sh-sm);
}
.ksr-search i{color:var(--ksr-faint);flex-shrink:0}
.ksr-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-family:inherit;font-size:15px;color:var(--ksr-ink);padding:9px 4px}
.ksr-search input::placeholder{color:var(--ksr-faint)}
.ksr-hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.ksr-stats{display:flex;gap:28px;margin-top:32px;flex-wrap:wrap}
.ksr-stat .ksr-num{font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--ksr-primary);line-height:1}
.ksr-stat .ksr-lab{font-size:13px;color:var(--ksr-muted);margin-top:5px}

/* floating featured card */
.ksr-hero-card{position:relative;background:#fff;border:1px solid var(--ksr-border);border-radius:var(--ksr-rlg);box-shadow:var(--ksr-sh-lg);overflow:hidden;justify-self:end;width:100%;max-width:410px}
.ksr-hero-card .ksr-hc-cover{display:block;aspect-ratio:16/10;background:var(--ksr-tint2)}
.ksr-hero-card .ksr-hc-cover img{width:100%;height:100%;object-fit:cover;display:block}
.ksr-hc-body{padding:18px 20px 22px}
.ksr-hc-body h3{font-size:18px;letter-spacing:-.01em;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ksr-hc-meta{display:flex;gap:16px;color:var(--ksr-muted);font-size:13px;margin-top:10px}
.ksr-hc-meta span{display:inline-flex;align-items:center;gap:6px}
.ksr-badge-float{position:absolute;top:14px;right:14px;z-index:2;background:var(--ksr-orange);color:#fff;font-weight:700;font-size:12.5px;padding:6px 12px;border-radius:var(--ksr-pill);box-shadow:0 8px 18px rgba(245,166,35,.35)}

/* =======================================================================
   CATEGORY STRIP
   ===================================================================== */
.ksr-catstrip{display:flex;gap:12px;align-items:center;overflow-x:auto;padding:14px 0;border-top:1px solid var(--ksr-border);border-bottom:1px solid var(--ksr-border);margin:0 0 44px}
.ksr-catlabel{font-size:12.5px;font-weight:600;color:var(--ksr-faint);white-space:nowrap;text-transform:uppercase;letter-spacing:.05em}
.ksr-chip{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;padding:8px 15px;border-radius:11px;background:var(--ksr-alt);color:var(--ksr-ink);font-size:14px;font-weight:500;transition:all .15s ease}
.ksr-chip:hover{background:var(--ksr-tint2);color:var(--ksr-primary)}
.ksr-chip .ic{width:27px;height:27px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;background:var(--ksr-tint);color:var(--ksr-primary);font-size:13px}

/* =======================================================================
   TABS
   ===================================================================== */
.ksr-tabs{display:inline-flex;background:#f1f4f9;border-radius:var(--ksr-pill);padding:5px;gap:4px;list-style:none;margin:0}
.ksr-tab{border:0;border-radius:var(--ksr-pill);padding:8px 20px;font-size:14.5px;font-weight:600;color:var(--ksr-muted);background:transparent;cursor:pointer;transition:all .2s ease;font-family:inherit}
.ksr-tab:hover{color:var(--ksr-primary)}
.ksr-tab.is-active{background:var(--ksr-primary);color:#fff;box-shadow:0 6px 16px rgba(21,101,216,.28)}
.ksr-panel[hidden]{display:none}

/* =======================================================================
   COURSE CARDS
   ===================================================================== */
.ksr-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ksr-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--ksr-border);border-radius:var(--ksr-rcard);overflow:hidden;transition:transform .18s ease,box-shadow .22s ease,border-color .2s ease}
.ksr-card:hover{transform:translateY(-4px);box-shadow:var(--ksr-sh);border-color:var(--ksr-border2)}
.ksr-cover{position:relative;display:block;aspect-ratio:16/9;background:var(--ksr-tint2);overflow:hidden}
.ksr-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.ksr-card:hover .ksr-cover img{transform:scale(1.05)}
.ksr-badges{position:absolute;top:12px;right:12px;display:flex;gap:8px;z-index:2}
.ksr-badge{font-size:12px;font-weight:700;padding:5px 11px;border-radius:var(--ksr-pill);color:#fff}
.ksr-badge-sale{background:var(--ksr-orange)}
.ksr-badge-free{background:var(--ksr-green)}
.ksr-type-tag{position:absolute;bottom:12px;left:12px;z-index:2;display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.94);color:var(--ksr-ink);font-size:12px;font-weight:600;padding:5px 11px;border-radius:var(--ksr-pill);box-shadow:var(--ksr-sh-sm)}
.ksr-type-tag i{color:var(--ksr-primary)}
.ksr-card-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.ksr-card-body h3{font-size:16.5px;letter-spacing:-.01em;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.7em}
.ksr-meta{display:flex;gap:15px;margin-top:10px;color:var(--ksr-muted);font-size:13px}
.ksr-meta span{display:inline-flex;align-items:center;gap:6px}
.ksr-meta i{color:var(--ksr-faint)}
.ksr-foot{margin-top:auto;padding-top:14px}
.ksr-pricerow{display:flex;align-items:baseline;gap:9px}
.ksr-now{font-size:19px;font-weight:700;color:var(--ksr-ink)}
.ksr-now.free{color:var(--ksr-green)}
.ksr-old{font-size:13.5px;color:var(--ksr-faint);text-decoration:line-through}
.ksr-actions{display:flex;gap:8px;margin-top:14px}
.ksr-actions .ksr-btn{flex:1;padding:11px 10px;font-size:13.5px;border-radius:11px}
.ksr-rank{position:absolute;top:12px;left:12px;z-index:3;width:38px;height:38px;border-radius:11px;background:var(--ksr-primary);color:#fff;font-weight:700;font-size:17px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(21,101,216,.4)}
.ksr-grid > .ksr-card:first-child .ksr-rank{background:var(--ksr-orange);box-shadow:0 6px 16px rgba(245,166,35,.45)}
.ksr-mine-go{margin-top:auto;padding-top:14px;color:var(--ksr-primary);font-weight:700;font-size:14.5px}

/* =======================================================================
   FEATURES
   ===================================================================== */
.ksr-features{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ksr-feature{background:#fff;border:1px solid var(--ksr-border);border-radius:var(--ksr-rcard);padding:26px 22px;transition:transform .18s ease,box-shadow .2s ease}
.ksr-feature:hover{transform:translateY(-4px);box-shadow:var(--ksr-sh-sm)}
.ksr-feat-ic{width:54px;height:54px;border-radius:15px;background:var(--ksr-tint);color:var(--ksr-primary);display:flex;align-items:center;justify-content:center;margin-bottom:15px;font-size:23px}
.ksr-feature h3{font-size:17px;margin-bottom:8px}
.ksr-feature p{color:var(--ksr-muted);font-size:14px}

/* =======================================================================
   ABOUT TEACHER
   ===================================================================== */
.ksr-teacher{display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;align-items:center;background:#fff;border:1px solid var(--ksr-border);border-radius:var(--ksr-rlg);padding:32px}
.ksr-teacher-photo{position:relative;border-radius:var(--ksr-rlg);overflow:hidden;box-shadow:var(--ksr-sh)}
.ksr-teacher-photo img{width:100%;height:auto;display:block}
.ksr-tbadge{position:absolute;left:16px;bottom:16px;background:rgba(13,71,161,.92);color:#fff;font-size:13px;font-weight:600;padding:9px 14px;border-radius:12px}
.ksr-tlist{display:flex;flex-direction:column;gap:13px;margin:20px 0 24px;padding:0;list-style:none}
.ksr-tlist li{display:flex;gap:12px;align-items:flex-start}
.ksr-tlist .tick{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:var(--ksr-tint);color:var(--ksr-green);display:flex;align-items:center;justify-content:center;font-size:13px;margin-top:2px}
.ksr-tlist span.txt{color:var(--ksr-ink);font-size:14.5px}
.ksr-teacher-cta{display:flex;gap:12px;flex-wrap:wrap}

/* =======================================================================
   STAT BAND
   ===================================================================== */
.ksr-statband{background:var(--ksr-tint);border:1px solid #dce8fb;border-radius:22px;padding:34px 28px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.ksr-statb{text-align:center;position:relative}
.ksr-statb + .ksr-statb::before{content:"";position:absolute;left:0;top:12%;height:76%;width:1px;background:#caddf7}
.ksr-statb b{display:block;font-size:34px;font-weight:700;color:var(--ksr-primary);line-height:1.1;margin-bottom:4px}
.ksr-statb span{font-size:13.5px;color:var(--ksr-muted)}

/* =======================================================================
   REVIEWS (marquee — รีวิวจริง)
   ===================================================================== */
.ksr-rev-mask{position:relative;overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 70px,#000 calc(100% - 70px),transparent);
          mask-image:linear-gradient(90deg,transparent,#000 70px,#000 calc(100% - 70px),transparent)}
.ksr-rev-track{display:flex;gap:20px;width:max-content;animation-name:ksr-rev-scroll;animation-timing-function:linear;animation-iteration-count:infinite}
.ksr-rev-mask:hover .ksr-rev-track,.ksr-rev-mask:focus-within .ksr-rev-track{animation-play-state:paused}
@keyframes ksr-rev-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.ksr-rev-card{flex:0 0 300px;width:300px;background:#fff;border:1px solid var(--ksr-border);border-radius:var(--ksr-rcard);padding:24px 22px;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.ksr-rev-card:hover{transform:translateY(-5px);box-shadow:var(--ksr-sh);border-color:#d6e4ff}
.ksr-rev-stars{color:var(--ksr-orange);font-size:14px;letter-spacing:2px;margin-bottom:11px}
.ksr-rev-text{font-size:14px;line-height:1.7;color:#3a4356;margin:0 0 16px;flex:1}
.ksr-rev-who{display:flex;align-items:center;gap:12px;padding-top:14px;border-top:1px solid var(--ksr-border)}
.ksr-rev-ava{width:42px;height:42px;border-radius:50%;background:var(--ksr-tint);color:var(--ksr-primary);font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.ksr-rev-name{font-size:14px;font-weight:600;color:var(--ksr-ink);line-height:1.3}
.ksr-rev-role{font-size:12px;color:var(--ksr-faint)}
@media (prefers-reduced-motion:reduce){.ksr-rev-track{animation:none}.ksr-rev-mask{overflow-x:auto}}

/* =======================================================================
   EBOOK — เร็ว ๆ นี้ (placeholder)
   ===================================================================== */
.ksr-ebook-soon{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--ksr-tint2),#fff);border:1px dashed #c9dcf8;border-radius:var(--ksr-rlg);padding:48px 36px;text-align:center}
.ksr-ebook-soon .ic{width:68px;height:68px;margin:0 auto 16px;border-radius:18px;background:#fff;color:var(--ksr-primary);display:flex;align-items:center;justify-content:center;font-size:30px;box-shadow:var(--ksr-sh-sm)}
.ksr-ebook-soon h2{font-size:clamp(22px,3vw,30px);margin:0 0 10px}
.ksr-ebook-soon p{color:var(--ksr-muted);font-size:16px;max-width:520px;margin:0 auto}
.ksr-soon-tag{display:inline-block;background:var(--ksr-orange);color:#fff;font-size:13px;font-weight:700;padding:6px 15px;border-radius:var(--ksr-pill);margin-bottom:16px}

/* =======================================================================
   BLOG / ARTICLES
   ===================================================================== */
.ksr-blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ksr-blog-card{background:#fff;border:1px solid var(--ksr-border);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.ksr-blog-card:hover{transform:translateY(-4px);box-shadow:var(--ksr-sh);border-color:#d6e4ff}
.ksr-blog-thumb{aspect-ratio:16/9;background:var(--ksr-alt);overflow:hidden}
.ksr-blog-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.ksr-blog-card:hover .ksr-blog-thumb img{transform:scale(1.05)}
.ksr-blog-body{padding:14px 20px 16px}
.ksr-blog-body h3{font-size:16px;line-height:1.45;margin:0 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ksr-blog-body .more{color:var(--ksr-primary);font-weight:600;font-size:14px}

/* =======================================================================
   FAQ (accordion)
   ===================================================================== */
.ksr-faq-list{max-width:760px;margin:0 auto}
.ksr-faq-item{background:#fff;border:1px solid var(--ksr-border);border-radius:14px;margin-bottom:12px;overflow:hidden}
.ksr-faq-q{width:100%;text-align:left;background:none;border:none;padding:17px 20px;font-size:15.5px;font-weight:600;color:var(--ksr-ink);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;font-family:inherit}
.ksr-faq-q .ic{color:var(--ksr-primary);transition:transform .2s ease;flex-shrink:0}
.ksr-faq-item.open .ksr-faq-q .ic{transform:rotate(180deg)}
.ksr-faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.ksr-faq-item.open .ksr-faq-a{max-height:340px}
.ksr-faq-a-in{padding:0 20px 17px;font-size:14.5px;line-height:1.7;color:#5a6678}

/* =======================================================================
   CTA BAND
   ===================================================================== */
.ksr-cta{position:relative;overflow:hidden;border-radius:var(--ksr-rlg);background:linear-gradient(135deg,var(--ksr-primary),var(--ksr-deep));color:#fff;padding:50px 40px;text-align:center}
.ksr-cta::after{content:"";position:absolute;inset:0;opacity:.5;background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1.4px);background-size:24px 24px}
.ksr-cta > *{position:relative;z-index:1}
.ksr-cta h2{color:#fff;font-size:clamp(23px,3vw,32px);margin:0 0 12px}
.ksr-cta p{color:rgba(255,255,255,.88);margin:0 auto 26px;max-width:560px;font-size:16px}
.ksr-cta-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.ksr-btn-white{background:#fff;color:var(--ksr-primary)}
.ksr-btn-white:hover{background:var(--ksr-tint2);color:var(--ksr-deep);transform:translateY(-2px)}
.ksr-btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.ksr-btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.12);color:#fff}

/* =======================================================================
   PACKAGES (แพ็กเกจ — ข้อมูลจริง)
   ===================================================================== */
.ksr-pkg-tabs{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-bottom:26px;list-style:none;padding:0}
.ksr-pkg-tab{border:1.5px solid var(--ksr-border2);background:#fff;color:var(--ksr-muted);border-radius:var(--ksr-pill);padding:9px 20px;font-size:14.5px;font-weight:600;cursor:pointer;font-family:inherit;transition:all .18s ease}
.ksr-pkg-tab.is-active{background:var(--ksr-primary);border-color:var(--ksr-primary);color:#fff}
.ksr-pkg-grid{display:flex;flex-wrap:wrap;gap:22px;justify-content:center}
.ksr-pkg-card{flex:1 1 280px;max-width:360px;background:#fff;border:1px solid var(--ksr-border);border-radius:var(--ksr-rlg);padding:26px 24px;display:flex;flex-direction:column;box-shadow:var(--ksr-sh-sm)}
.ksr-pkg-name{font-size:19px;font-weight:700;margin-bottom:6px}
.ksr-pkg-price{display:flex;align-items:baseline;gap:6px;margin-bottom:12px}
.ksr-pkg-price b{font-size:30px;font-weight:700;color:var(--ksr-primary)}
.ksr-pkg-desc{color:var(--ksr-muted);font-size:14px;margin-bottom:14px;min-height:42px}
.ksr-pkg-list{list-style:none;padding:0;margin:0 0 18px;display:grid;gap:8px;font-size:14px;color:var(--ksr-ink)}
.ksr-pkg-list li{display:flex;gap:8px;align-items:flex-start}
.ksr-pkg-list i{color:var(--ksr-green);margin-top:3px}
.ksr-pkg-card .ksr-btn{margin-top:auto}

/* =======================================================================
   COURSE DETAIL (view.php)
   ===================================================================== */
.ksr-crumb{display:flex;gap:8px;align-items:center;color:var(--ksr-faint);font-size:13.5px;margin-bottom:18px;flex-wrap:wrap}
.ksr-crumb a:hover{color:var(--ksr-primary)}
.ksr-crumb i{font-size:11px}
.ksr-cd-flow > section{padding-top:36px;margin-top:36px;border-top:1px solid var(--ksr-border)}
.ksr-cd-flow > section.ksr-cd-first{padding-top:0;margin-top:0;border-top:0}
.ksr-detail-cover{border-radius:var(--ksr-rlg);overflow:hidden;box-shadow:var(--ksr-sh);background:var(--ksr-tint2);margin:14px 0 18px}
.ksr-detail-cover img{width:100%;height:auto;display:block}
.ksr-detail-cover .ratio{border-radius:var(--ksr-rlg);overflow:hidden}
.ksr-cd-first h1{font-size:clamp(24px,3.4vw,36px);letter-spacing:-.02em;margin:6px 0 0}
.ksr-lead{color:var(--ksr-muted);margin-top:12px;font-size:16px}
.ksr-detail-meta{display:flex;gap:20px;flex-wrap:wrap;margin-top:16px;color:var(--ksr-muted);font-size:14px}
.ksr-detail-meta span{display:inline-flex;align-items:center;gap:7px}
.ksr-detail-meta i{color:var(--ksr-primary)}
.ksr-hero-buy{margin-top:22px;display:flex;flex-direction:column;align-items:flex-start;gap:14px;max-width:640px}
/* hero หน้ารายละเอียดคอร์ส: 2 คอลัมน์แบบ SkillLane (รูปซ้ายจำกัดกว้าง / ข้อมูลขวา) */
.ksr-cd-hero-grid{display:grid;grid-template-columns:minmax(0,480px) minmax(0,1fr);gap:32px;align-items:start}
.ksr-cd-media{min-width:0}
.ksr-cd-media .ksr-detail-cover{margin:0}
.ksr-cd-info{min-width:0}
.ksr-cd-info .ksr-eyebrow{margin-bottom:10px}
.ksr-cd-info h1{margin-top:4px}
@media(max-width:860px){.ksr-cd-hero-grid{grid-template-columns:1fr;gap:18px}.ksr-cd-media{max-width:560px;margin:0 auto;width:100%}}
.ksr-split-badge{display:inline-flex;align-items:center;gap:8px;background:var(--ksr-tint);color:var(--ksr-primary);font-weight:600;font-size:14px;padding:10px 16px;border-radius:12px;border:1px solid var(--ksr-border2);line-height:1.4}
.ksr-hb-cta{display:flex;gap:12px;flex-wrap:wrap}
.ksr-hb-price{display:flex;align-items:baseline;gap:8px;color:var(--ksr-muted);font-size:14px;flex-wrap:wrap}
.ksr-hb-price .ksr-now{font-size:22px}

/* prose */
.ksr-prose{max-width:820px}
.ksr-block + .ksr-block{margin-top:26px}
.ksr-block h2{font-size:22px;margin-bottom:14px;letter-spacing:-.01em}
.ksr-block :where(p,li){color:var(--ksr-ink)}
.ksr-pay-steps{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.ksr-pay-steps li{display:flex;gap:12px;align-items:flex-start;color:var(--ksr-ink);font-size:15px}
.ksr-pay-steps .n{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:var(--ksr-tint);color:var(--ksr-primary);font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center}

/* teacher row (detail) */
.ksr-teacher-row{display:flex;gap:18px;align-items:flex-start;background:var(--ksr-alt);border:1px solid var(--ksr-border);border-radius:var(--ksr-rcard);padding:20px}
.ksr-teacher-row img{width:72px;height:72px;border-radius:50%;object-fit:cover;flex-shrink:0}
.ksr-teacher-row .tname{font-weight:700;font-size:17px}
.ksr-teacher-row .tmeta{color:var(--ksr-primary);font-size:13.5px;font-weight:600;margin:3px 0 6px}
.ksr-teacher-row .tdesc{color:var(--ksr-muted);font-size:14.5px}

/* curriculum */
.ksr-curric{background:#fff;border:1px solid var(--ksr-border);border-radius:var(--ksr-rlg);box-shadow:var(--ksr-sh-sm)}
.ksr-cc-head{padding:22px 24px 18px;background:linear-gradient(135deg,var(--ksr-tint2),#fff);border-bottom:1px solid var(--ksr-border)}
.ksr-cc-head h2{font-size:21px;letter-spacing:-.01em;margin-top:10px}
.ksr-cc-head p{font-size:14px;color:var(--ksr-muted);margin-top:8px;line-height:1.55}
.ksr-cc-body{padding:16px 18px 10px}
.ksr-acc{display:flex;flex-direction:column;gap:10px}
.ksr-acc-item{border:1px solid var(--ksr-border);border-radius:14px;overflow:hidden;background:#fff}
.ksr-acc-head{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;background:#fff;border:0;cursor:pointer;text-align:left;font-family:inherit;font-size:15px;font-weight:600;color:var(--ksr-ink)}
.ksr-acc-head:hover{background:var(--ksr-alt)}
.ksr-acc-head .lessons{font-size:13px;font-weight:500;color:var(--ksr-faint);margin-left:auto;margin-right:4px}
.ksr-acc-head .chev{transition:transform .2s ease;color:var(--ksr-muted)}
.ksr-acc-item.open .chev{transform:rotate(180deg)}
.ksr-acc-body{padding:0 16px;max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease}
.ksr-acc-item.open .ksr-acc-body{padding:2px 16px 14px;max-height:4000px}
.ksr-chapter{display:flex;align-items:center;gap:12px;padding:12px 0;border-top:1px solid var(--ksr-border);flex-wrap:wrap}
.ksr-chapter:first-child{border-top:0}
.ksr-ch-ic{width:34px;height:34px;border-radius:9px;background:var(--ksr-tint);color:var(--ksr-primary);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:14px}
.ksr-ch-ic.free{background:#e9f7ee;color:var(--ksr-green)}
.ksr-ch-info{flex:1;min-width:150px}
.ksr-ch-title{font-size:14.5px;font-weight:500;color:var(--ksr-ink);line-height:1.35}
.ksr-ch-meta{font-size:12.5px;color:var(--ksr-faint);margin-top:2px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.ksr-ch-meta i{margin-right:3px}
.ksr-ch-meta .text-free{color:var(--ksr-green);font-weight:600}
.ksr-ch-buy{display:flex;align-items:center;gap:8px;flex-shrink:0;flex-wrap:wrap}
.ksr-ch-price{font-size:15px;font-weight:700;color:var(--ksr-ink);white-space:nowrap}
.ksr-ch-free-tag{font-size:12px;font-weight:700;color:var(--ksr-green);background:#e9f7ee;padding:5px 11px;border-radius:999px}
.ksr-ch-icons{display:inline-flex;align-items:center;gap:10px;font-size:17px}
.ksr-ch-icons a,.ksr-ch-icons span{color:var(--ksr-primary);cursor:pointer}
.ksr-ch-icons .text-gray{color:var(--ksr-faint);cursor:default}
.ksr-cc-foot{padding:10px 18px 22px}
.ksr-or{display:flex;align-items:center;gap:12px;color:var(--ksr-faint);font-size:13px;margin:6px 0 16px}
.ksr-or::before,.ksr-or::after{content:"";flex:1;height:1px;background:var(--ksr-border)}
.ksr-whole{background:var(--ksr-alt);border:1px solid var(--ksr-border);border-radius:16px;padding:18px}
.ksr-whole .wc-row{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:14px;gap:12px}
.ksr-whole .wc-label{font-size:13px;color:var(--ksr-muted);margin-bottom:4px}
.ksr-whole .ksr-btn + .ksr-btn{margin-top:8px}

/* trust list (detail buy) */
.ksr-trust{list-style:none;padding:0;margin:14px 0 0;display:grid;gap:9px}
.ksr-trust li{font-size:13.5px;color:#4a5568;display:flex;align-items:center;gap:9px}
.ksr-trust li i{color:var(--ksr-green);width:16px;text-align:center;flex:none}

/* =======================================================================
   STICKY BUY BAR (สีน้ำเงินเข้ม — course detail)
   ===================================================================== */
.ksr-buybar{
  position:fixed;left:0;right:0;bottom:0;z-index:1035;background:var(--ksr-deep);
  border-top:1px solid rgba(255,255,255,.14);box-shadow:0 -8px 28px rgba(13,71,161,.4);
  transform:translateY(110%);transition:transform .28s cubic-bezier(.4,0,.2,1);
}
.ksr-buybar.show{transform:translateY(0)}
.ksr-buybar-in{width:100%;max-width:1160px;margin:0 auto;display:flex;align-items:center;gap:14px;
  padding:10px 20px calc(10px + env(safe-area-inset-bottom,0px))}
.ksr-buybar .bb-thumb{width:58px;height:38px;border-radius:8px;background-size:cover;background-position:center;flex-shrink:0;background-color:var(--ksr-tint2)}
.ksr-buybar .bb-info{flex:1;min-width:0}
.ksr-buybar .bb-title{font-weight:600;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#fff}
.ksr-buybar .bb-price{display:flex;align-items:baseline;gap:8px;margin-top:2px}
.ksr-buybar .bb-price .ksr-now{font-size:16px;font-weight:700;color:#fff}
.ksr-buybar .bb-price .ksr-old{font-size:12.5px;color:rgba(255,255,255,.6)}
.ksr-buybar .ksr-btn{flex-shrink:0}
.ksr-buybar .ksr-btn.bb-primary{background:#fff;color:var(--ksr-deep);border-color:#fff}
.ksr-buybar .ksr-btn.bb-primary:hover{background:var(--ksr-tint2);color:var(--ksr-deep)}
.ksr-buybar .ksr-btn.bb-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.ksr-buybar .ksr-btn.bb-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
@media (max-width:600px){
  .ksr-buybar .bb-thumb{display:none}
  .ksr-buybar .bb-price .ksr-old{display:none}
  .ksr-buybar-in{gap:10px;padding-left:16px;padding-right:16px}
  .ksr-buybar .ksr-btn{padding:10px 14px;font-size:13.5px}
}

/* =======================================================================
   RESPONSIVE
   ===================================================================== */
@media (max-width:980px){
  .ksr-hero-grid{grid-template-columns:1fr;gap:30px}
  .ksr-hero-card{justify-self:stretch;max-width:none}
  .ksr-features{grid-template-columns:repeat(2,1fr)}
  .ksr-teacher{grid-template-columns:1fr;gap:26px}
  .ksr-teacher-photo{max-width:420px;margin:0 auto}
}
@media (max-width:860px){
  .ksr-grid,.ksr-blog-grid{grid-template-columns:repeat(2,1fr)}
  .ksr-statband{grid-template-columns:repeat(2,1fr);gap:24px 16px}
  .ksr-statb + .ksr-statb::before{display:none}
  .ksr-head h2,.ksr-cta h2{font-size:24px}
}
@media (max-width:620px){
  .ksr-hero{padding:26px 20px}
  .ksr-hero-card{display:none}
  .ksr-grid,.ksr-blog-grid,.ksr-features{grid-template-columns:1fr}
  .ksr-cta{padding:36px 22px}
  .ksr-teacher{padding:22px}
  .ksr-rev-card{flex-basis:270px;width:270px}
}