/* ===== เตรียมสอบ ก.พ. — สไตล์รวม (mobile-first) ===== */
:root{
  /* อิงโทนทางการของสำนักงาน ก.พ. (น้ำเงินรอยัล + ทอง) แต่ปรับให้สว่าง/สดกว่า */
  --navy:#102444; --navy-d:#0a1730; --blue:#2f5fe0; --blue-d:#1e40af; --sky:#3ea0ff;
  --teal:#0ea5a4; --amber:#c8881a; --gold:#f4b71e;
  --ink:#102444; --gray:#51607a; --line:#e6ebf2; --bg:#f4f7fc; --white:#fff;
  --green:#16a34a; --red:#dc2626;
  --radius:16px; --shadow:0 6px 24px rgba(21,42,110,.10);
  --max:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Sarabun","Prompt","Segoe UI",system-ui,sans-serif;
  color:var(--ink); background:var(--bg); line-height:1.65; font-size:16px;
}
/* หัวข้อใช้ฟอนต์ Kanit ให้ดูพรีเมียม/โมเดิร์น */
h1,h2,h3,h4,.brand,.sec-title,.acc-head,.hl-year{font-family:"Kanit","Sarabun",sans-serif}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{max-width:var(--max);margin:0 auto;padding:0 18px}
.muted{color:var(--gray)}
.center{text-align:center}

/* ปุ่ม */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:999px;font-weight:700;font-size:16px;
  border:none;cursor:pointer;transition:.15s;line-height:1}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--navy-d)}
.btn-gold{background:var(--gold);color:var(--navy)}
.btn-gold:hover{filter:brightness(.95)}
.btn-line{background:#06c755;color:#fff}
.btn-line:hover{filter:brightness(.95)}
.btn-ghost{background:#fff;color:var(--blue);border:1.5px solid var(--blue)}
.btn-ghost:hover{background:#eff6ff}
.btn-lg{padding:16px 30px;font-size:17px}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* แถบนำทาง */
header.nav{position:sticky;top:0;z-index:50;background:var(--navy);border-bottom:3px solid var(--gold)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:18px;color:#fff}
.brand .logo{width:30px;height:30px;border-radius:8px;background:#fff;
  display:grid;place-items:center;color:var(--navy);font-size:14px;font-weight:800}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:8px 12px;border-radius:8px;font-weight:600;font-size:15px;color:#cdd8f5}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.14)}
.nav-links a.active{color:var(--gold);background:rgba(255,255,255,.10);font-weight:800;box-shadow:inset 0 -3px 0 var(--gold)}
.nav-links a.btn-gold{color:var(--navy)}
.nav-links a.btn-gold.active{box-shadow:none}
.nav-toggle{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:#fff}

/* hero */
.hero{background:linear-gradient(150deg,#e9f0ff 0%,#f3f8ff 48%,#fff6e6 100%);padding:46px 0 40px;
  border-bottom:3px solid var(--gold)}
.badge{display:inline-block;background:#fff3d6;color:#9a6a05;font-weight:700;
  font-size:13px;padding:6px 14px;border-radius:999px;margin-bottom:16px;border:1px solid #f7d985}
.hero h1{font-size:30px;line-height:1.3;margin-bottom:14px}
.hero p.lead{font-size:17px;color:var(--gray);margin-bottom:22px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.checks{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px;margin-top:18px;padding-top:16px;
  border-top:1px solid var(--line);font-size:14px;color:var(--gray)}
.checks span{display:flex;align-items:center;gap:6px}

/* countdown */
.countdown{display:flex;gap:10px;margin:22px 0 0}
.cd-box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 0;
  text-align:center;min-width:70px;flex:1;box-shadow:var(--shadow)}
.cd-box b{display:block;font-size:30px;color:var(--blue);line-height:1}
.cd-box small{font-size:12px;color:var(--gray)}

/* sections */
section{padding:46px 0}
.kicker{color:var(--teal);font-weight:700;font-size:14px;letter-spacing:.5px;text-align:center}
.sec-title{font-size:25px;text-align:center;margin:6px 0 8px}
.sec-sub{text-align:center;color:var(--gray);max-width:620px;margin:0 auto 30px}

/* grid cards */
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.card h3{font-size:18px;margin-bottom:8px}
.card .ico{font-size:30px;margin-bottom:8px}

/* exam list card */
.exam-card{display:flex;flex-direction:column;gap:6px}
.exam-card .tag{align-self:flex-start;font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px}
.tag-free{background:#dcfce7;color:var(--green)}
.tag-lock{background:#fef3c7;color:var(--amber)}
.exam-card .meta{font-size:14px;color:var(--gray);margin:4px 0 12px}

/* criteria */
.crit{background:#fff;border-radius:var(--radius);border:1px solid var(--line);padding:18px;box-shadow:var(--shadow)}
.crit h3{font-size:17px}
.crit .pass{font-weight:700;color:var(--blue)}
.crit-note{background:#fffbeb;border:1px solid #fde68a;border-radius:12px;padding:14px;color:#92400e;margin-top:18px;font-size:15px}

/* ===== exam engine ===== */
.exam-top{position:sticky;top:60px;z-index:30;background:#fff;border-bottom:1px solid var(--line);padding:10px 0}
.exam-top-in{display:flex;align-items:center;justify-content:space-between;gap:12px}
.timer{font-weight:800;font-size:18px;background:#eff6ff;color:var(--blue-d);padding:8px 14px;border-radius:999px}
.timer.warn{background:#fef2f2;color:var(--red);animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.55}}
.progress-txt{font-size:14px;color:var(--gray)}
.qbar{height:6px;background:var(--line);border-radius:999px;overflow:hidden;margin-top:8px}
.qbar > i{display:block;height:100%;background:var(--blue);width:0;transition:.3s}

.qcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);margin:20px 0}
.qsubject{font-size:13px;font-weight:700;color:var(--teal);margin-bottom:6px}
.qtext{font-size:18px;font-weight:600;margin-bottom:18px;white-space:pre-line}
.choice{display:flex;align-items:flex-start;gap:12px;border:1.5px solid var(--line);
  border-radius:12px;padding:14px 16px;margin-bottom:10px;cursor:pointer;transition:.12s}
.choice:hover{border-color:var(--blue);background:#f8faff}
.choice.sel{border-color:var(--blue);background:#eff6ff}
.choice .mk{width:26px;height:26px;border-radius:50%;border:2px solid var(--line);
  display:grid;place-items:center;font-weight:700;font-size:14px;flex-shrink:0}
.choice.sel .mk{background:var(--blue);color:#fff;border-color:var(--blue)}
.choice.correct{border-color:var(--green);background:#f0fdf4}
.choice.correct .mk{background:var(--green);color:#fff;border-color:var(--green)}
.choice.wrong{border-color:var(--red);background:#fef2f2}
.choice.wrong .mk{background:var(--red);color:#fff;border-color:var(--red)}
.explain{background:#f1f5f9;border-left:4px solid var(--teal);border-radius:8px;
  padding:12px 14px;margin-top:8px;font-size:15px;color:#334155}
.exam-nav{display:flex;justify-content:space-between;gap:12px;margin:18px 0 40px}

/* unlock gate */
.gate{max-width:440px;margin:40px auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);text-align:center}
.gate input{width:100%;padding:14px;border:1.5px solid var(--line);border-radius:12px;
  font-size:16px;text-align:center;letter-spacing:1px;margin:14px 0;font-family:inherit}
.gate input:focus{outline:none;border-color:var(--blue)}
.gate .err{color:var(--red);font-size:14px;min-height:20px}

/* result / score card */
.scorecard{max-width:480px;margin:24px auto;background:linear-gradient(160deg,#fff,#f0f9ff);
  border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow);text-align:center}
.scorecard .result-badge{display:inline-block;font-size:22px;font-weight:800;padding:8px 24px;border-radius:999px;margin-bottom:8px}
.pass-badge{background:#dcfce7;color:var(--green)}
.fail-badge{background:#fee2e2;color:var(--red)}
.bigscore{font-size:52px;font-weight:800;color:var(--ink);line-height:1}
.subj-row{display:flex;align-items:center;justify-content:space-between;
  padding:12px 0;border-bottom:1px dashed var(--line);text-align:left}
.subj-row:last-child{border-bottom:none}
.subj-name{font-weight:600;font-size:15px}
.subj-score{font-weight:800;font-size:17px}
.pill{font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;margin-left:8px}
.pill-pass{background:#dcfce7;color:var(--green)}
.pill-fail{background:#fee2e2;color:var(--red)}
.sc-foot{margin-top:14px;font-size:13px;color:var(--gray)}

/* knowledge */
.kb h3{color:var(--blue-d);margin:22px 0 6px;font-size:19px}
.kb ul{padding-left:22px;color:#334155}
.kb li{margin:5px 0}
.kb .lawbox{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;margin:14px 0;box-shadow:var(--shadow)}

/* footer */
footer{background:var(--navy);color:#c7d2f0;padding:38px 0 24px;margin-top:30px;border-top:4px solid var(--gold)}
footer .fgrid{display:grid;gap:24px;grid-template-columns:1fr}
footer h4{color:#fff;font-size:15px;margin-bottom:10px}
footer a{color:#a9b6e0}
footer a:hover{color:var(--gold)}
.fcopy{border-top:1px solid rgba(255,255,255,.12);margin-top:24px;padding-top:16px;font-size:13px;color:#8d9bcd;text-align:center}

/* responsive */
@media(min-width:760px){
  .hero h1{font-size:42px}
  .grid-2{grid-template-columns:1fr 1fr}
  .grid-3{grid-template-columns:repeat(3,1fr)}
  footer .fgrid{grid-template-columns:2fr 1fr 1fr}
  .hero-flex{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center}
}
@media(max-width:759px){
  .nav-links{position:absolute;top:60px;left:0;right:0;background:var(--navy);flex-direction:column;
    align-items:stretch;padding:8px;border-bottom:3px solid var(--gold);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px}
  .nav-toggle{display:block}
}

/* ===== ส่วนเพิ่มเติม: CRO / การตลาด ===== */
/* ไฮไลต์พาดหัว: แยก "ก.พ." (หน่วยงาน/วิชา) ออกจาก "ปี 69" ให้ชัด ไม่ให้อ่านเป็นเดือน/ปี */
.hl-pa{color:var(--navy);font-weight:800;border-bottom:3px solid var(--sky);padding:0 2px;white-space:nowrap}
.hl-year{color:var(--navy);background:var(--gold);padding:1px 11px;border-radius:8px;white-space:nowrap;
  display:inline-block;font-size:.82em;vertical-align:middle}

/* ข้อความบอกราคา/Value ladder ใต้ปุ่ม */
.price-note{font-size:14.5px;color:var(--gray);margin-top:12px}
.price-note b{color:var(--amber);font-size:17px}

/* social proof + avatar pile */
.social-proof{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:13.5px;color:var(--gray)}
.avatars{display:flex}
.avatars span{width:28px;height:28px;border-radius:50%;border:2px solid #fff;margin-left:-8px;
  background:var(--blue)}
.avatars span:first-child{margin-left:0;background:var(--navy)}
.avatars span:nth-child(2){background:var(--teal)}
.avatars span:nth-child(3){background:var(--amber)}
.avatars span:nth-child(4){background:var(--sky)}

/* แถบ disclaimer ใต้ hero */
.disclaimer-strip{background:#fff7e6;border-bottom:1px solid #f3d98a;text-align:center;
  font-size:12.5px;color:#7a5b12;padding:8px 14px}

/* หมวดข้อสอบแบบพับเก็บได้ (accordion) ในหน้าคลังข้อสอบ */
.acc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow)}
.acc-head{width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;
  background:var(--navy);color:#fff;border:none;cursor:pointer;padding:15px 18px;
  font-size:17px;font-weight:800;font-family:inherit;text-align:left}
.acc-head:hover{background:var(--navy-d)}
.acc-meta{font-size:13.5px;font-weight:600;color:#cdd8f5;display:flex;align-items:center;gap:8px;white-space:nowrap}
.acc-meta .chev{transition:transform .2s;font-size:15px}
.acc.open .acc-meta .chev{transform:rotate(180deg)}
.acc-body{display:none;padding:16px}
.acc.open .acc-body{display:block}

/* เลย์เอาต์หน้าคลังข้อสอบ: sidebar + เนื้อหา */
.exam-layout{display:flex;gap:22px;align-items:flex-start}
.exam-main{flex:1;min-width:0}
.exam-side{width:230px;flex-shrink:0;position:sticky;top:72px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px}
.side-title{font-weight:800;color:var(--navy);font-size:15px;margin-bottom:10px}
.side-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:12px}
.side-group{font-weight:700;color:var(--navy);padding:9px 10px;border-radius:8px;cursor:pointer;font-size:14.5px}
.side-group:hover{background:#eef2ff}
.side-sub{color:var(--gray);padding:6px 10px 6px 18px;border-radius:8px;cursor:pointer;font-size:13px;line-height:1.4}
.side-sub:hover{background:#f1f5f9;color:var(--navy)}
@media(max-width:759px){
  .exam-layout{flex-direction:column}
  .exam-side{width:100%;position:static}
}

/* แถบสถิติเร้าใจ (gimmick ข้อมูลสนามสอบจริง) */
.statband-sec{background:var(--navy);padding:26px 0}
.statband{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;text-align:center}
.statband > div{padding:4px}
.statband b{display:block;font-size:28px;color:var(--gold);line-height:1.15}
.statband span{font-size:13px;color:#cdd8f5}
@media(max-width:560px){.statband b{font-size:23px}.statband span{font-size:12px}}

/* มือถือ: ทำหน้าแรกให้กระชับ ไม่ยาวเกินไป (คอมคงเดิม) */
@media(max-width:759px){
  section{padding:30px 0}
  .sec-title{font-size:21px}
  .sec-sub{margin-bottom:18px}
  /* การ์ดจุดเด่น 6 อัน + เกณฑ์ 3 ขา เป็น 2 คอลัมน์ ให้สั้นลงครึ่งหนึ่ง */
  .grid-3{grid-template-columns:1fr 1fr;gap:12px}
  .grid-3 .card{padding:14px}
  .grid-3 .card .ico{font-size:24px;margin-bottom:4px}
  .grid-3 .card h3{font-size:15px;margin-bottom:4px}
  .grid-3 .card .muted{font-size:12.5px}
  .crit h3{font-size:15px}
  .crit .muted{font-size:12.5px}
  .statband-sec{padding:20px 0}
}

/* ปุ่มไลน์ลอยมุมขวาล่าง (ทุกหน้า) */
.line-fab{position:fixed;right:16px;bottom:16px;z-index:90;background:#06c755;color:#fff;
  display:flex;align-items:center;gap:8px;padding:13px 18px;border-radius:999px;font-weight:700;
  font-size:15px;box-shadow:0 6px 20px rgba(6,199,85,.4);text-decoration:none}
.line-fab:hover{filter:brightness(.96)}

/* มือถือ: ให้ fold แรกเห็นพาดหัว+ปุ่มครบ */
@media(max-width:759px){
  .hero{padding:24px 0 28px}
  .hero h1{font-size:26px;margin-bottom:10px}
  .hero p.lead{font-size:15px;margin-bottom:14px}
  .hero-cta .btn{width:100%}
  .badge{font-size:12.5px}
  .line-fab{padding:11px 15px;font-size:14px}
}

/* ===== มือถือ: หน้าทำข้อสอบ (exam engine) ให้กดง่าย อ่านสบาย ===== */
@media(max-width:560px){
  .exam-top-in{flex-wrap:wrap;gap:8px}
  .timer{font-size:16px;padding:7px 12px}
  .progress-txt{font-size:13px}
  .qcard{padding:16px;margin:14px 0;border-radius:14px}
  .qtext{font-size:16.5px;margin-bottom:14px;line-height:1.5}
  .choice{padding:13px 14px;gap:10px}
  .choice .mk{width:24px;height:24px;font-size:13px}
  .explain{font-size:14px;padding:11px 13px}
  .exam-nav{gap:10px;margin:16px 0 32px}
  .exam-nav .btn{flex:1;padding:13px 10px;font-size:14.5px}
  /* การ์ดผลคะแนน */
  .scorecard{padding:20px;margin:18px auto}
  .bigscore{font-size:42px}
  .scorecard .result-badge{font-size:18px;padding:7px 18px}
  /* กล่องปลดล็อก */
  .gate{padding:22px 18px;margin:24px auto}
}

@keyframes gpfade{from{opacity:0}to{opacity:1}}