/* ==========================================================================
   U31R — design system (เขียนใหม่ทั้งชุด สำหรับ u31r.online)
   โครงดีไซน์: dark navy + violet ตามแบบเว็บตัวอย่างในเครือ
   ฟอนต์: Sarabun self-host (thai/latin/latin-ext) — ไม่พึ่ง CDN
   ========================================================================== */

@font-face{font-family:'Sarabun';font-style:normal;font-weight:300;font-display:swap;
  src:url('../fonts/Sarabun-thai-300.woff2') format('woff2');
  unicode-range:U+0E01-0E5B,U+200C-200D,U+25CC;}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:300;font-display:swap;
  src:url('../fonts/Sarabun-latin-ext-300.woff2') format('woff2');
  unicode-range:U+0100-02AF,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:300;font-display:swap;
  src:url('../fonts/Sarabun-latin-300.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:'Sarabun';font-style:normal;font-weight:400;font-display:swap;
  src:url('../fonts/Sarabun-thai-400.woff2') format('woff2');
  unicode-range:U+0E01-0E5B,U+200C-200D,U+25CC;}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:400;font-display:swap;
  src:url('../fonts/Sarabun-latin-ext-400.woff2') format('woff2');
  unicode-range:U+0100-02AF,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:400;font-display:swap;
  src:url('../fonts/Sarabun-latin-400.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:'Sarabun';font-style:normal;font-weight:600;font-display:swap;
  src:url('../fonts/Sarabun-thai-600.woff2') format('woff2');
  unicode-range:U+0E01-0E5B,U+200C-200D,U+25CC;}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:600;font-display:swap;
  src:url('../fonts/Sarabun-latin-ext-600.woff2') format('woff2');
  unicode-range:U+0100-02AF,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:600;font-display:swap;
  src:url('../fonts/Sarabun-latin-600.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:'Sarabun';font-style:normal;font-weight:700;font-display:swap;
  src:url('../fonts/Sarabun-thai-700.woff2') format('woff2');
  unicode-range:U+0E01-0E5B,U+200C-200D,U+25CC;}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:700;font-display:swap;
  src:url('../fonts/Sarabun-latin-ext-700.woff2') format('woff2');
  unicode-range:U+0100-02AF,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:700;font-display:swap;
  src:url('../fonts/Sarabun-latin-700.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:'Sarabun';font-style:normal;font-weight:800;font-display:swap;
  src:url('../fonts/Sarabun-thai-800.woff2') format('woff2');
  unicode-range:U+0E01-0E5B,U+200C-200D,U+25CC;}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:800;font-display:swap;
  src:url('../fonts/Sarabun-latin-ext-800.woff2') format('woff2');
  unicode-range:U+0100-02AF,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:800;font-display:swap;
  src:url('../fonts/Sarabun-latin-800.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;}

:root{
  --bg:#04091c; --bg-2:#071033; --surface:#0b1338; --surface-2:#111c4d;
  --text:#e9ecf7; --heading:#f7f9ff; --muted:#a5b0cc;
  --primary:#8b5cf6; --primary-d:#6d28d9; --primary-l:#a78bfa;
  --accent:#22d3ee; --gold:#f5b942;
  --border:rgba(255,255,255,.12); --border-2:rgba(255,255,255,.06);
  --ok:#34d399; --radius:16px; --radius-s:10px;
  --shadow:0 18px 50px rgba(3,6,24,.55);
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:'Sarabun',system-ui,-apple-system,'Segoe UI',sans-serif;
  font-size:17px;line-height:1.78;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary-l);text-decoration:none}
a:hover{color:#fff}
h1,h2,h3,h4{color:var(--heading);line-height:1.35;margin:0 0 .6em;font-weight:700}
h1{font-size:clamp(1.7rem,3.4vw,2.6rem)}
h2{font-size:clamp(1.35rem,2.4vw,1.9rem)}
h3{font-size:clamp(1.1rem,1.7vw,1.35rem)}
h4{font-size:1.05rem}
p{margin:0 0 1.05em}
ul,ol{margin:0 0 1.1em;padding-left:1.3em}
li{margin-bottom:.4em}
strong{color:#fff;font-weight:700}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section-pad{padding:64px 0}
.section-pad + .section-pad{padding-top:8px}
.section-head{max-width:820px;margin:0 auto 34px;text-align:center}
.section-head p{color:var(--muted);margin:0}
.eyebrow{display:inline-block;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--primary-l);border:1px solid var(--border);border-radius:999px;padding:5px 14px;margin-bottom:14px;background:rgba(139,92,246,.10)}
.muted{color:var(--muted)}
.center{text-align:center}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(4,9,28,.92);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border-2)}
.hdr{display:flex;align-items:center;gap:18px;min-height:70px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.28rem;color:#fff;letter-spacing:.02em}
.brand img{width:34px;height:34px}
.brand span i{color:var(--primary-l);font-style:normal}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.main-nav a{padding:8px 11px;border-radius:999px;color:var(--text);font-weight:600;font-size:.95rem}
.main-nav a:hover{background:rgba(139,92,246,.16);color:#fff}
.main-nav a[aria-current="page"]{background:rgba(139,92,246,.22);color:#fff}
.hdr-cta{display:flex;gap:8px;align-items:center}
.nav-toggle{display:none}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;
  border-radius:999px;padding:12px 24px;border:1px solid transparent;cursor:pointer;transition:.18s;font-size:1rem;line-height:1.2}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-d));color:#fff;box-shadow:0 10px 26px rgba(109,40,217,.42)}
.btn-primary:hover{transform:translateY(-2px);color:#fff}
.btn-ghost{background:rgba(255,255,255,.05);border-color:var(--border);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-gold{background:linear-gradient(135deg,#f7c65a,#dd9420);color:#20140a}
.btn-lg{padding:15px 32px;font-size:1.06rem}
.btn-block{display:flex;width:100%}
.btn-sm{padding:9px 18px;font-size:.9rem}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}
.cta-row.center{justify-content:center}

/* ---------- hero ---------- */
.hero-section{position:relative;overflow:hidden;padding:70px 0 56px;
  background:radial-gradient(1100px 520px at 78% -8%,rgba(139,92,246,.34),transparent 62%),
             radial-gradient(760px 420px at 6% 12%,rgba(34,211,238,.14),transparent 60%),var(--bg)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:9px;background:rgba(245,185,66,.12);border:1px solid rgba(245,185,66,.4);
  color:#ffd987;border-radius:999px;padding:7px 16px;font-weight:600;font-size:.88rem;margin-bottom:18px}
.hero-section h1{font-size:clamp(1.85rem,3.9vw,2.9rem);margin-bottom:.45em}
.hero-lead{font-size:1.12rem;color:#cdd6ee;max-width:44ch}
.hero-media img{width:100%;aspect-ratio:2/1;object-fit:cover;border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow)}
.hero-media figcaption{color:var(--muted);font-size:.86rem;margin-top:10px;text-align:center}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}
.hero-stats .stat{background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:var(--radius-s);padding:12px 14px;text-align:center}
.stat-num{display:block;font-size:1.32rem;font-weight:800;color:#fff}
.stat-lbl{font-size:.82rem;color:var(--muted)}

/* ---------- ticker / counter strip ---------- */
.strip{background:linear-gradient(90deg,rgba(139,92,246,.22),rgba(34,211,238,.14));border-top:1px solid var(--border-2);border-bottom:1px solid var(--border-2);padding:22px 0}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center}
.strip-grid .stat-num{font-size:1.6rem;color:var(--gold)}
.pulse{display:inline-flex;align-items:center;gap:8px;color:var(--ok);font-size:.84rem;font-weight:600}
.pulse::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 0 rgba(52,211,153,.7);animation:pulse 2.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(52,211,153,.6)}70%{box-shadow:0 0 0 12px rgba(52,211,153,0)}100%{box-shadow:0 0 0 0 rgba(52,211,153,0)}}

/* ---------- page hero (หน้าลูก) ---------- */
.page-hero{position:relative;padding:38px 0 46px;background:
  radial-gradient(900px 420px at 82% -20%,rgba(139,92,246,.3),transparent 60%),var(--bg-2)}
.page-hero h1{margin-bottom:.35em}
.page-hero .lead{font-size:1.1rem;color:#cdd6ee;max-width:60ch}
.page-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.page-hero-media img{width:100%;aspect-ratio:2/1;object-fit:cover;border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow)}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 20px}
.chip{font-size:.84rem;background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:999px;padding:5px 13px;color:#dbe2f5}
.chip.on{background:rgba(139,92,246,.2);border-color:rgba(139,92,246,.5);color:#fff}

/* ---------- breadcrumb ---------- */
.breadcrumb{font-size:.86rem;color:var(--muted);padding:14px 0 0}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:0;margin:0}
.breadcrumb li+li::before{content:"›";margin-right:6px;color:var(--muted)}
.crumbs{background:var(--bg-2);border-bottom:1px solid var(--border-2)}

/* ---------- cards / grids ---------- */
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;transition:.2s}
.card:hover{border-color:rgba(139,92,246,.5);transform:translateY(-3px)}
.card h3{margin-bottom:.4em}
.card p:last-child{margin-bottom:0}
.card-ico{font-size:1.6rem;display:block;margin-bottom:10px}
.card-tag{position:absolute;top:14px;right:14px;font-size:.7rem;font-weight:700;letter-spacing:.1em;
  background:var(--gold);color:#22160a;border-radius:6px;padding:3px 9px}
.card{position:relative}
.card-img{width:100%;aspect-ratio:2/1;object-fit:cover;border-radius:var(--radius-s);margin-bottom:16px;border:1px solid var(--border-2)}
.card-live{border-color:rgba(245,185,66,.35)}
.media-caption{color:var(--muted);font-size:.88rem;margin-top:10px}

/* ---------- numbers row ---------- */
.num-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;text-align:center;margin:26px 0}
.num-row .box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-s);padding:18px 12px}
.num-row .stat-num{color:var(--primary-l)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
.steps .step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px 20px;position:relative}
.steps .step::before{counter-increment:s;content:counter(s);position:absolute;top:-14px;left:20px;width:34px;height:34px;
  display:grid;place-items:center;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-d));font-weight:800;color:#fff}
.steps .step h4{margin:12px 0 6px}
.steps .step p{margin:0;color:var(--muted);font-size:.95rem}

/* ---------- pricing ---------- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.tier{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;text-align:center}
.tier.hot{border-color:var(--primary);background:linear-gradient(180deg,rgba(139,92,246,.18),rgba(255,255,255,.02));box-shadow:var(--shadow)}
.tier .price{font-size:2rem;font-weight:800;color:var(--gold);margin:6px 0 14px}
.tier ul{list-style:none;padding:0;text-align:left;margin:0 0 18px}
.tier li{padding-left:24px;position:relative;color:#d5dcef}
.tier li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:700}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);margin:0 0 10px}
table{border-collapse:collapse;width:100%;min-width:560px}
caption{caption-side:top;text-align:left;padding:14px 16px;color:var(--muted);font-size:.9rem}
th,td{padding:13px 16px;border-bottom:1px solid var(--border-2);text-align:left;font-size:.96rem;vertical-align:top}
thead th{background:rgba(139,92,246,.16);color:#fff;font-weight:700}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:rgba(255,255,255,.03)}
td.yes{color:var(--ok);font-weight:700}
td.no{color:#f87171;font-weight:700}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:920px;margin:0 auto}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-s);padding:4px 18px}
.faq details[open]{border-color:rgba(139,92,246,.55)}
.faq summary{cursor:pointer;padding:14px 0;font-weight:700;color:#fff;list-style:none;display:flex;gap:12px;align-items:flex-start}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"?";flex:0 0 26px;height:26px;display:grid;place-items:center;border-radius:50%;
  background:rgba(139,92,246,.28);color:#fff;font-size:.85rem;font-weight:800;margin-top:3px}
.faq summary:hover{color:var(--primary-l)}
.faq .ans{padding:0 0 16px 38px;color:#ced7ec}
.faq .ans p:last-child{margin-bottom:0}

/* ---------- TOC ---------- */
.toc{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px 24px;margin-bottom:34px}
.toc h2{font-size:1.05rem;margin-bottom:.7em}
.toc ol{margin:0;padding-left:1.2em;columns:2;column-gap:28px}
.toc a{color:#d5dcef}
.toc a:hover{color:var(--primary-l)}

/* ---------- quick links / notice ---------- */
.quick{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.quick a{display:block;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-s);padding:16px 18px;color:#fff;font-weight:600}
.quick a span{display:block;color:var(--muted);font-weight:400;font-size:.88rem;margin-top:4px}
.quick a:hover{border-color:rgba(139,92,246,.55)}
.notice{background:rgba(245,185,66,.08);border:1px solid rgba(245,185,66,.32);border-radius:var(--radius-s);padding:16px 20px;color:#ffe6b3;font-size:.95rem}
.notice strong{color:#fff}
.final-cta{background:linear-gradient(135deg,rgba(139,92,246,.28),rgba(34,211,238,.14)),var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);padding:40px 30px;text-align:center;box-shadow:var(--shadow)}
.final-cta h2{max-width:760px;margin-left:auto;margin-right:auto}
.final-cta p{color:#d9e0f2;max-width:64ch;margin:0 auto 22px}
.fact-list{list-style:none;padding:0}
.fact-list li{border-bottom:1px dashed var(--border);padding:11px 0;display:flex;gap:14px;justify-content:space-between}
.fact-list li:last-child{border-bottom:0}
.fact-list b{color:#fff;font-weight:700}

/* ---------- footer ---------- */
.site-footer{background:#03071a;border-top:1px solid var(--border-2);margin-top:70px;padding:54px 0 26px;font-size:.95rem}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px}
.foot-grid h4{font-size:.95rem;letter-spacing:.06em;text-transform:uppercase;color:#fff;margin-bottom:14px}
.foot-grid ul{list-style:none;padding:0;margin:0}
.foot-grid li{margin-bottom:9px}
.foot-grid a{color:var(--muted)}
.foot-grid a:hover{color:#fff}
.foot-brand p{color:var(--muted);max-width:38ch}
.foot-pay{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.foot-pay span{font-size:.8rem;background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:8px;padding:5px 11px;color:#cfd7ec}
.foot-bottom{border-top:1px solid var(--border-2);margin-top:34px;padding-top:20px;display:flex;flex-wrap:wrap;gap:14px;
  justify-content:space-between;color:var(--muted);font-size:.88rem}
.age-badge{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;border:2px solid #f87171;color:#f87171;font-weight:800;font-size:.82rem}

/* ---------- responsive ---------- */
@media(max-width:1000px){
  .hero-grid,.page-hero-grid{grid-template-columns:1fr}
  .g4,.num-row,.steps,.strip-grid{grid-template-columns:repeat(2,1fr)}
  .g3,.tiers,.quick{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .main-nav{order:3;width:100%;justify-content:flex-start;padding-bottom:10px;overflow-x:auto}
  .hdr{flex-wrap:wrap;padding-bottom:6px}
}
@media(max-width:640px){
  body{font-size:16px}
  .section-pad{padding:44px 0}
  .g2,.g3,.g4,.tiers,.quick,.num-row,.steps,.strip-grid,.hero-stats{grid-template-columns:1fr}
  .toc ol{columns:1}
  .foot-grid{grid-template-columns:1fr}
  .hdr-cta .btn{padding:10px 16px;font-size:.9rem}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}