/* ============================================================
   สมองพี่โจ้ — Sales with Passion  |  Design System v1
   ============================================================ */
:root{
  /* Brand */
  --brand:#ff6a00; --brand2:#ff8a2b; --brand-deep:#f15a00;
  /* TOTS */
  --think:#2563eb; --order:#dc2626; --tell:#15a34a; --show:#ca8a04;
  /* Neutrals */
  --ink:#241d18; --ink2:#4a4038; --mut:#7a7168;
  --surface:#faf4ee; --card:#ffffff; --card2:#fff3e8; --line:#efe1d5;
  --dark:#1c140e;
  /* System */
  --radius:20px; --radius-sm:14px;
  --shadow:0 18px 45px rgba(120,45,0,.14);
  --shadow-lg:0 30px 70px rgba(120,45,0,.22);
  --max:1120px;
}
*{box-sizing:border-box;margin:0;padding:0;font-family:'Prompt',system-ui,sans-serif;-webkit-tap-highlight-color:transparent;}
html{scroll-behavior:smooth;}
body{background:var(--surface);color:var(--ink);line-height:1.6;overflow-x:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px;}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;gap:18px;height:66px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.12rem;}
.brand .logo{width:38px;height:38px;border-radius:11px;background:linear-gradient(140deg,var(--brand2),var(--brand-deep));display:grid;place-items:center;color:#fff;font-size:1.15rem;box-shadow:0 6px 16px rgba(241,90,0,.35);}
.brand small{display:block;font-size:.62rem;font-weight:500;color:var(--mut);letter-spacing:.5px;margin-top:-2px;}
.nav-links{display:flex;gap:6px;margin-left:auto;align-items:center;}
.nav-links a{padding:8px 14px;border-radius:10px;font-weight:500;font-size:.95rem;color:var(--ink2);transition:.15s;}
.nav-links a:hover{background:var(--card2);color:var(--brand-deep);}
.nav-links a.active{color:var(--brand-deep);font-weight:600;}
.nav-cta{background:linear-gradient(135deg,var(--brand2),var(--brand-deep));color:#fff!important;padding:9px 18px!important;border-radius:999px!important;font-weight:600!important;box-shadow:0 8px 20px rgba(241,90,0,.30);}
.nav-cta:hover{transform:translateY(-1px);}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;font-size:1.4rem;cursor:pointer;color:var(--ink);}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:1rem;padding:14px 26px;border-radius:999px;border:0;cursor:pointer;transition:.18s;}
.btn-primary{background:linear-gradient(135deg,var(--brand2),var(--brand-deep));color:#fff;box-shadow:0 12px 26px rgba(241,90,0,.32);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(241,90,0,.40);}
.btn-ghost{background:#fff;color:var(--brand-deep);border:1.5px solid var(--line);}
.btn-ghost:hover{border-color:var(--brand);}
.btn-lg{padding:17px 34px;font-size:1.08rem;}

/* ---------- Generic sections ---------- */
section{padding:64px 0;}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--brand-deep);background:var(--card2);border:1px solid var(--line);padding:5px 14px;border-radius:999px;}
h1,h2,h3{line-height:1.2;font-weight:700;}
.sec-title{font-size:2rem;margin:14px 0 10px;}
.sec-sub{color:var(--mut);font-size:1.05rem;max-width:640px;}
.center{text-align:center;}
.center .sec-sub{margin-left:auto;margin-right:auto;}

/* ---------- Cards & grids ---------- */
.grid{display:grid;gap:22px;}
.g3{grid-template-columns:repeat(3,1fr);}
.g2{grid-template-columns:repeat(2,1fr);}
.g4{grid-template-columns:repeat(4,1fr);}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:.2s;}
.card.link:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--brand);}
.card .ic{width:54px;height:54px;border-radius:15px;display:grid;place-items:center;font-size:1.7rem;background:var(--card2);margin-bottom:16px;}
.card h3{font-size:1.22rem;margin-bottom:8px;}
.card p{color:var(--mut);font-size:.96rem;}
.card .more{display:inline-block;margin-top:14px;color:var(--brand-deep);font-weight:600;font-size:.95rem;}

/* ---------- TOTS chips ---------- */
.tots{display:flex;flex-wrap:wrap;gap:10px;}
.tchip{display:inline-flex;align-items:center;gap:7px;padding:7px 15px;border-radius:999px;font-weight:600;font-size:.92rem;color:#fff;}
.c-think{background:var(--think);} .c-order{background:var(--order);}
.c-tell{background:var(--tell);}  .c-show{background:var(--show);}
.tots-card{border-top:5px solid var(--line);}
.tots-card.think{border-top-color:var(--think);} .tots-card.order{border-top-color:var(--order);}
.tots-card.tell{border-top-color:var(--tell);}   .tots-card.show{border-top-color:var(--show);}

/* ---------- Hero ---------- */
.hero{background:
   radial-gradient(1100px 500px at 80% -10%,rgba(255,138,43,.30),transparent 60%),
   radial-gradient(800px 420px at 0% 10%,rgba(255,106,0,.14),transparent 55%),
   var(--surface);
  padding:70px 0 60px;}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;}
.hero h1{font-size:3rem;letter-spacing:-.5px;}
.hero h1 .hl{background:linear-gradient(120deg,var(--brand),var(--brand-deep));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero p.lead{font-size:1.18rem;color:var(--ink2);margin:18px 0 26px;max-width:520px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:28px;margin-top:34px;flex-wrap:wrap;}
.hero-stats b{font-size:1.7rem;color:var(--brand-deep);display:block;}
.hero-stats span{font-size:.85rem;color:var(--mut);}
.hero-visual{background:linear-gradient(160deg,#ff9436,#f15a00);border-radius:26px;padding:30px;color:#fff;box-shadow:var(--shadow-lg);}
.hero-visual .vh{font-size:1.1rem;font-weight:600;opacity:.95;margin-bottom:16px;}
.hero-visual .vcard{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:15px;padding:14px 16px;margin-bottom:11px;display:flex;gap:12px;align-items:center;}
.hero-visual .vcard .em{font-size:1.5rem;}
.hero-visual .vcard b{display:block;font-size:1rem;}
.hero-visual .vcard small{opacity:.85;font-size:.8rem;}

/* ---------- Band / dark CTA ---------- */
.band{background:linear-gradient(135deg,var(--dark),#3a2513);color:#fff;border-radius:26px;padding:48px 40px;text-align:center;}
.band h2{font-size:2rem;margin-bottom:12px;}
.band p{opacity:.85;max-width:560px;margin:0 auto 24px;}

/* ---------- Article ---------- */
.article{max-width:760px;margin:0 auto;padding:44px 0 20px;}
.article h1{font-size:2.2rem;margin:10px 0 14px;}
.article .meta{color:var(--mut);font-size:.9rem;margin-bottom:26px;}
.article h2{font-size:1.5rem;margin:34px 0 12px;padding-top:8px;}
.article h3{font-size:1.18rem;margin:22px 0 8px;}
.article p{margin:12px 0;color:var(--ink2);}
.article ul,.article ol{margin:12px 0 12px 22px;color:var(--ink2);}
.article li{margin:6px 0;}
.article blockquote{border-left:4px solid var(--brand);background:var(--card2);padding:14px 18px;border-radius:0 12px 12px 0;margin:18px 0;color:var(--ink2);}
.article table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.94rem;}
.article th,.article td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top;}
.article th{background:var(--card2);}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:6px;}

/* ---------- Article list cards ---------- */
.a-card{display:flex;flex-direction:column;height:100%;}
.a-card .cat{font-size:.78rem;font-weight:700;letter-spacing:.5px;text-transform:uppercase;}
.a-card h3{margin:8px 0;font-size:1.18rem;}
.a-card p{flex:1;}

/* ---------- Sales page ---------- */
.price-box{background:var(--card);border:2px solid var(--brand);border-radius:var(--radius);padding:32px;text-align:center;box-shadow:var(--shadow-lg);}
.price-old{color:var(--mut);text-decoration:line-through;font-size:1.1rem;}
.price-now{font-size:2.8rem;font-weight:800;color:var(--brand-deep);line-height:1.1;}
.tick{display:flex;gap:12px;align-items:flex-start;margin:12px 0;}
.tick .k{color:var(--tell);font-weight:800;flex:0 0 auto;}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:4px 18px;margin-bottom:12px;}
.faq summary{cursor:pointer;font-weight:600;padding:14px 0;list-style:none;display:flex;justify-content:space-between;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";color:var(--brand-deep);font-size:1.3rem;}
.faq details[open] summary::after{content:"–";}
.faq details p{padding:0 0 14px;color:var(--mut);}
.badge{display:inline-block;background:var(--order);color:#fff;font-weight:700;font-size:.82rem;padding:5px 14px;border-radius:999px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:#cbb9aa;padding:50px 0 26px;margin-top:20px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:12px;}
.site-footer a{display:block;color:#cbb9aa;padding:5px 0;font-size:.93rem;}
.site-footer a:hover{color:var(--brand2);}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.1rem;margin-bottom:10px;}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:30px;padding-top:18px;font-size:.85rem;color:#8a7a6c;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}

/* ---------- Reveal anim (progressive enhancement) ---------- */
.js .reveal{opacity:0;transform:translateY(22px);transition:.6s cubic-bezier(.2,.7,.3,1);}
.js .reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none;transition:none;}}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;} .hero h1{font-size:2.4rem;}
  .g3,.g4{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:640px){
  .nav-links{position:fixed;inset:66px 0 auto 0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:12px 20px 20px;gap:2px;transform:translateY(-140%);transition:.28s;box-shadow:var(--shadow);}
  .nav-links.open{transform:none;}
  .nav-links a{padding:13px 10px;border-radius:10px;}
  .burger{display:block;}
  section{padding:46px 0;}
  .sec-title,.hero h1{font-size:1.9rem;}
  .g2,.g3,.g4{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .band{padding:36px 22px;} .hero-stats{gap:20px;}
}

/* ============================================================
   Sales Tools + Membership (added)
   ============================================================ */
.lock-wrap{max-width:460px;margin:0 auto;}
.auth-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-lg);}
.auth-tabs{display:flex;gap:6px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:5px;margin-bottom:22px;}
.auth-tabs button{flex:1;border:0;background:transparent;padding:11px;border-radius:8px;font-weight:600;font-family:'Prompt',sans-serif;font-size:.98rem;cursor:pointer;color:var(--mut);}
.auth-tabs button.on{background:#fff;color:var(--brand-deep);box-shadow:0 2px 6px rgba(120,45,0,.10);}
.field{margin-bottom:14px;}
.field label{display:block;font-size:.88rem;font-weight:600;margin-bottom:6px;color:var(--ink2);}
.field input{width:100%;padding:13px 15px;border:1.5px solid var(--line);border-radius:12px;font-family:'Prompt',sans-serif;font-size:1rem;background:var(--surface);}
.field input:focus{outline:none;border-color:var(--brand);background:#fff;}
.auth-msg{font-size:.9rem;padding:10px 14px;border-radius:10px;margin-bottom:14px;display:none;}
.auth-msg.err{display:block;background:#fdecec;color:#b42318;border:1px solid #f6c9c4;}
.auth-msg.ok{display:block;background:#eafaf0;color:#0a7a3d;border:1px solid #bfe9cf;}
.locked-hero{background:linear-gradient(160deg,#2a1a10,#4a2c14);color:#fff;border-radius:var(--radius);padding:40px;text-align:center;}
.locked-hero .lockic{font-size:2.6rem;}
.member-bar{display:flex;align-items:center;gap:12px;background:var(--card2);border:1px solid var(--line);border-radius:14px;padding:12px 18px;margin-bottom:20px;}
.member-bar .av{width:40px;height:40px;border-radius:50%;background:linear-gradient(140deg,var(--brand2),var(--brand-deep));color:#fff;display:grid;place-items:center;font-weight:700;}
.member-bar b{font-size:.98rem;} .member-bar small{color:var(--mut);font-size:.8rem;}

/* Test Chat tool */
.tool-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:20px;align-items:start;}
.chatbox{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);display:flex;flex-direction:column;height:560px;}
.chat-log{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:12px;}
.msg{max-width:82%;padding:12px 15px;border-radius:15px;line-height:1.5;font-size:.96rem;}
.msg.cust{align-self:flex-start;background:#eef2ff;border:1px solid #dfe6ff;border-bottom-left-radius:5px;}
.msg.ai{align-self:flex-start;background:var(--card2);border:1px solid var(--line);border-bottom-left-radius:5px;}
.msg .who{font-size:.72rem;color:var(--mut);margin-bottom:4px;font-weight:600;}
.chat-input{display:flex;gap:10px;padding:14px;border-top:1px solid var(--line);}
.chat-input input{flex:1;padding:13px 15px;border:1.5px solid var(--line);border-radius:999px;font-family:'Prompt',sans-serif;font-size:1rem;}
.chat-input input:focus{outline:none;border-color:var(--brand);}
.analysis{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);}
.analysis h3{font-size:1.1rem;margin-bottom:14px;}
.arow{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid var(--line);font-size:.94rem;}
.arow:last-child{border-bottom:0;} .arow b{font-weight:600;}
.quality-bar{height:9px;background:var(--line);border-radius:999px;overflow:hidden;margin:8px 0 6px;}
.quality-bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--tell),#0a7a3d);width:0;transition:width .5s;}
.hint{font-size:.85rem;color:var(--mut);}
@media(max-width:820px){.tool-grid{grid-template-columns:1fr;} .chatbox{height:460px;}}