/* ============================================================================
   guide.css — ศูนย์ช่วยเหลือ / คู่มือการใช้งาน (MOBILE Source-of-Truth)
   Redesign 2026: premium light help-center · โทนส้มให้เข้าชุดกับหน้า how-to ปลายทาง.
   Layout ใหม่ = แถบกรองหมวด (.gfilter/.gtab) + รายการหัวข้อแถวเต็ม (.glist/.grow) มี
   คำอธิบายใต้ชื่อ + ลูกศร. ลิงก์ทุกหัวข้อเป็น <a href> (accessible). Desktop = guide.desktop.css.
   ========================================================================== */
:root{
  --sun:#FF7A1A; --sun-deep:#EF5F06; --sun-dark:#D8430A; --gold:#FFB23E; --leaf:#1E9E6A;
  --cream:#FFF8F3; --cream-2:#FBEFE4; --paper:#fff;
  --ink:#1D1B18; --ink-2:#6B5E52; --muted:#9A8B7C; --line:#F0E7DC;
  --fd:'Mitr',sans-serif; --fb:'Prompt',sans-serif;
  --sh-sm:0 6px 16px -12px rgba(120,70,20,.4);
  --sh-md:0 18px 36px -22px rgba(120,70,20,.55);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;overflow-x:hidden}
body{font-family:var(--fb);color:var(--ink);background:var(--cream);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}
h1,h2{font-family:var(--fd);font-weight:600;margin:0;line-height:1.2}
a{color:inherit;text-decoration:none}
@keyframes pop{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------- header (มือถือ) ---------- */
header{position:sticky;top:0;z-index:40;background:rgba(255,248,243,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.hd{display:flex;align-items:center;gap:10px;padding:11px 12px}
.ib{width:38px;height:38px;border:none;background:transparent;display:grid;place-items:center;cursor:pointer;color:var(--ink);flex:none}
.ib svg{width:22px;height:22px}
.htitle{font-family:var(--fd);font-weight:600;font-size:17px;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- HERO — เรียบ / clean (พื้นขาว · ตัวหนังสือเข้ม · ส้มเป็นแค่ accent) ---------- */
.hero{position:relative;overflow:hidden;color:var(--ink);padding:28px 18px 24px;background:var(--paper);border-bottom:1px solid var(--line)}
.hero .glow,.hero::after{display:none}
.hero .in{position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--sun-deep);font-weight:700;
  background:#FFF1E8;border:1px solid #FFD9C2;padding:6px 13px;border-radius:999px}
.eyebrow svg{width:14px;height:14px}
.hero h1{font-size:26px;margin:14px 0 7px;letter-spacing:-.01em;color:var(--ink)}
.hero .hsub{font-size:13.5px;color:var(--ink-2);max-width:44ch;line-height:1.6}
.hchips{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.hchip{font-size:12px;font-weight:500;background:var(--cream);border:1px solid var(--line);color:var(--ink-2);padding:6px 14px;border-radius:999px}

/* ---------- filter tabs (กรองหมวด) ---------- */
.gfilter{display:flex;gap:8px;overflow-x:auto;padding:4px 0 14px;margin:2px 0 0;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.gfilter::-webkit-scrollbar{display:none}
.gtab{flex:none;border:1px solid var(--line);background:var(--paper);color:var(--ink-2);font-family:var(--fd);font-weight:500;font-size:13px;
  padding:8px 16px;border-radius:999px;cursor:pointer;white-space:nowrap;transition:background .15s,border-color .15s,color .15s}
.gtab.on{background:linear-gradient(120deg,var(--sun),var(--sun-deep));border-color:transparent;color:#fff;box-shadow:0 8px 18px -10px rgba(239,95,6,.7)}
@media(hover:hover){.gtab:not(.on):hover{border-color:var(--sun);color:var(--sun-deep)}}

/* ---------- topic list (แถวหัวข้อ) ---------- */
.glist{display:grid;grid-template-columns:1fr;gap:10px}
.grow{position:relative;display:flex;align-items:center;gap:13px;background:var(--paper);border:1px solid var(--line);border-radius:15px;
  padding:13px 14px;box-shadow:var(--sh-sm);cursor:pointer;animation:pop .35s ease both;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}
.grow .gi{width:42px;height:42px;border-radius:12px;flex:none;display:grid;place-items:center}
.grow .gi svg{width:21px;height:21px}
.gtx{flex:1;min-width:0}
.gn{display:block;font-family:var(--fd);font-weight:500;font-size:14.5px;line-height:1.3;color:var(--ink)}
.gd{display:block;font-size:12px;color:var(--muted);margin-top:2px;line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gchev{width:19px;height:19px;color:var(--muted);flex:none;transition:transform .16s ease,color .16s ease}
.grow:active{transform:scale(.99)}
@media(hover:hover){
  .grow:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:#FFD3AE}
  .grow:hover .gchev{transform:translateX(3px);color:var(--sun-deep)}
}
.gempty{text-align:center;color:var(--muted);font-size:13px;padding:24px 12px}

/* icon tile colours (คงชุดเดิม 6 สี) */
.gi.o{background:#FFEBDA;color:#EF5F06}
.gi.b{background:#E4EEFA;color:#1064C4}
.gi.g{background:#E3F4EC;color:#158A5B}
.gi.gd{background:#FCEFD3;color:#CF8A08}
.gi.r{background:#FCE3E0;color:#E5443B}
.gi.p{background:#EFE7F8;color:#7E52B8}

/* ---------- contact CTA ---------- */
.contact{text-align:center;background:linear-gradient(160deg,#FFF3EA,#FFFDFB);border-color:#FFE0C6;margin-top:16px}
.contact .ci{width:52px;height:52px;border-radius:16px;margin:0 auto 11px;background:linear-gradient(140deg,var(--sun),var(--sun-deep));
  color:#fff;display:grid;place-items:center;box-shadow:0 12px 24px -12px rgba(239,95,6,.7)}
.contact .ci svg{width:26px;height:26px}
.contact b{font-family:var(--fd);font-size:16px}
.contact p{margin:5px 0 14px;font-size:12.5px;color:var(--ink-2)}
.contact button{border:none;background:linear-gradient(120deg,var(--sun),var(--sun-deep));color:#fff;font-family:var(--fd);font-weight:600;
  font-size:14px;padding:12px 26px;border-radius:13px;cursor:pointer;box-shadow:0 14px 26px -12px rgba(239,95,6,.85);
  transition:transform .15s ease,box-shadow .15s ease}
@media(hover:hover){.contact button:hover{transform:translateY(-2px);box-shadow:0 18px 32px -12px rgba(239,95,6,.95)}}

@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
:focus-visible{outline:2px solid var(--sun);outline-offset:2px}