/* Layout: a phone-first page in one column; from 860px the hero and card rows open into two to four columns.
   Palette: blush paper, raspberry for actions, lilac and peach as friends. Plumeria flower as the signature. */
:root{
  --bg:#FFF5F7;--surface:#FFFFFF;--ink:#3B1F34;--muted:#7A5B71;--line:#F7DCE6;
  --rose:#D6336C;--rose-soft:#FFE3EC;--on-rose:#FFFFFF;
  --lilac:#6D50C4;--lilac-soft:#EFE9FF;
  --peach:#C2571F;--peach-soft:#FFE9DC;
  --ok:#0B7F63;--ok-soft:#D9F4EA;--bad:#C21F48;--bad-soft:#FDE3E9;
  --shadow:0 18px 44px rgba(214,51,108,.14);
  --display:'Mali','Sarabun',system-ui,sans-serif;
  --body:'Sarabun','Mali',system-ui,-apple-system,'Thonburi',sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0B1426;--surface:#13213A;--ink:#EEF3FB;--muted:#9FB0CC;--line:#24375A;
  --rose:#F9A8C8;--rose-soft:#1F2A4D;--on-rose:#0B1426;
  --lilac:#C4B5FD;--lilac-soft:#1E2650;
  --peach:#FDBA74;--peach-soft:#2A2716;
  --ok:#5EEAD4;--ok-soft:#0F3036;--bad:#F87171;--bad-soft:#3A1C24;
  --shadow:0 18px 44px rgba(0,0,0,.4);color-scheme:dark;
}}
:root[data-theme="dark"]{
  --bg:#0B1426;--surface:#13213A;--ink:#EEF3FB;--muted:#9FB0CC;--line:#24375A;
  --rose:#F9A8C8;--rose-soft:#1F2A4D;--on-rose:#0B1426;
  --lilac:#C4B5FD;--lilac-soft:#1E2650;
  --peach:#FDBA74;--peach-soft:#2A2716;
  --ok:#5EEAD4;--ok-soft:#0F3036;--bad:#F87171;--bad-soft:#3A1C24;
  --shadow:0 18px 44px rgba(0,0,0,.4);color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 var(--body);padding:calc(env(safe-area-inset-top) + 6px) 0 env(safe-area-inset-bottom)}
.band{position:fixed;top:0;left:0;right:0;height:6px;z-index:70;background:linear-gradient(90deg,#A51931 0 16.66%,#F4F5F8 16.66% 33.33%,#2D3A8C 33.33% 66.66%,#F4F5F8 66.66% 83.33%,#A51931 83.33%);box-shadow:0 1px 0 rgba(0,0,0,.12)}
h1,h2,h3{font-family:var(--display);line-height:1.3;margin:0;text-wrap:balance}
h1{font-size:clamp(2rem,6.2vw,3.2rem);font-weight:700}
h2{font-size:clamp(1.45rem,4vw,2rem);font-weight:700}
h3{font-size:1.15rem;font-weight:700}
p{margin:0}
a{color:var(--rose)}
button{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--lilac);outline-offset:2px}
.en{font-family:var(--display)}

/* Top bar */
.top{position:sticky;top:calc(env(safe-area-inset-top,0px) + 6px);z-index:20;background:var(--bg);border-bottom:1px solid var(--line)}
.top-in{max-width:1080px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink);font-family:var(--display);font-weight:700;font-size:1.15rem;line-height:1.1;flex:none}
.logo b{color:var(--rose)}
.fl{flex:none;display:block}
nav{display:flex;align-items:center;gap:8px;min-width:0}
.pill{display:inline-flex;align-items:center;justify-content:center;height:36px;min-width:44px;padding:0 10px;border-radius:99px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);text-decoration:none;font-size:.85rem;font-weight:600;cursor:pointer}
.pill.round{width:36px;min-width:36px;padding:0}
.navlink{color:var(--ink);text-decoration:none;font-weight:600;font-size:.92rem;background:none;border:0;padding:4px;cursor:pointer;white-space:nowrap}
.navlink.quiet{color:var(--muted)}
.inline{display:inline;margin:0}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;background:var(--rose);color:var(--on-rose);text-decoration:none;font-family:var(--display);font-weight:700;font-size:1.05rem;border:0;border-radius:18px;padding:10px 24px;cursor:pointer;text-align:center;transition:transform .15s}
.btn:hover{transform:translateY(-2px)}
.btn.ghost{background:var(--surface);color:var(--ink);border:2px solid var(--line)}
.btn.small{min-height:36px;padding:4px 14px;font-size:.9rem;border-radius:99px;white-space:nowrap}
.btn.red{background:var(--bad);color:var(--surface)}
.gbtn{background:var(--surface);color:var(--ink);border:2px solid var(--line);font-family:var(--body);font-weight:600;font-size:1rem;width:100%;margin-top:14px}

main{max-width:1080px;margin:0 auto;padding-inline:16px;padding-block:0 40px}
section{margin-block:56px;display:flex;flex-direction:column;gap:20px}
.sub{color:var(--muted);max-width:40em}

/* Hero */
.hero{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;margin-block:28px 0;position:relative}
.hero-txt{display:flex;flex-direction:column;gap:14px;min-width:0}
.kicker{align-self:flex-start;background:var(--rose-soft);color:var(--rose);font-weight:700;font-size:.88rem;border-radius:99px;padding:4px 14px}
.lead{font-size:1.1rem;color:var(--muted);max-width:32em}
.ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}
.ctas .btn{flex:1 1 200px}
.nums{display:flex;flex-wrap:wrap;gap:8px 26px;margin-top:8px}
.nums div{display:flex;align-items:baseline;gap:6px}
.nums b{font-family:var(--display);font-size:1.6rem;color:var(--rose);font-variant-numeric:tabular-nums}
.nums span{color:var(--muted);font-size:.95rem}

/* Live flashcard */
.demo{position:relative;display:flex;flex-direction:column;gap:12px;max-width:440px;width:100%;margin-inline:auto}
.demo-stack{position:relative;padding:10px 6px 0}
.demo-stack::before,.demo-stack::after{content:"";position:absolute;inset:18px 10px -6px;border-radius:28px;background:var(--lilac-soft);transform:rotate(-3deg)}
.demo-stack::after{background:var(--peach-soft);transform:rotate(3deg)}
.card{position:relative;z-index:1;display:block;width:100%;perspective:1000px;background:none;border:0;padding:0;cursor:pointer}
.card-in{display:grid;transition:transform .5s;transform-style:preserve-3d;-webkit-transform-style:preserve-3d}
.card.flip .card-in{transform:rotateY(180deg)}
.face{grid-area:1/1;backface-visibility:hidden;-webkit-backface-visibility:hidden;min-height:280px;border-radius:26px;border:3px solid var(--rose);background:var(--surface);padding:22px 16px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;text-align:center;box-shadow:var(--shadow);transform:rotateY(0deg)}
.face.rear{transform:rotateY(180deg);background:var(--rose-soft)}
.face .pic{font-size:3.4rem;line-height:1.1}
.face b{font-family:var(--display);font-size:2.2rem;line-height:1.2;overflow-wrap:anywhere}
.face .pr{font-size:1.3rem;color:var(--rose);font-weight:700}
.face .tb{font-family:var(--display);font-weight:700;font-size:2rem;line-height:1.3}
.face small{color:var(--muted);margin-top:6px;font-size:.9rem}
.demo-btns{display:grid;grid-template-columns:1fr 1fr;gap:10px;position:relative;z-index:1;margin-top:10px}
.mini{min-height:48px;border-radius:16px;border:2px solid var(--line);background:var(--surface);font-weight:600;cursor:pointer;padding:6px}

/* Anatomy of a word */
.anatomy{display:grid;grid-template-columns:minmax(0,1fr);gap:22px;background:var(--surface);border:2px solid var(--line);border-radius:28px;padding:24px 18px}
.anat-txt{display:flex;flex-direction:column;gap:12px;min-width:0}
.parts{display:flex;flex-direction:column;gap:10px;min-width:0}
.part{display:flex;flex-direction:column;border-radius:16px;padding:10px 16px;min-width:0}
.part small{font-size:.82rem;font-weight:600}
.part b{font-family:var(--display);font-size:1.7rem;line-height:1.3;overflow-wrap:anywhere}
.p1{background:var(--rose-soft)}.p1 small{color:var(--rose)}
.p2{background:var(--lilac-soft)}.p2 small{color:var(--lilac)}
.p3{background:var(--peach-soft)}.p3 small{color:var(--peach)}
.slowline{display:flex;align-items:center;gap:10px;min-height:48px;border-radius:16px;border:2px dashed var(--line);background:none;padding:6px 14px;font-weight:600;cursor:pointer;text-align:left}

/* Cards */
.modes{display:grid;grid-template-columns:minmax(0,1fr);gap:12px}
.mode{display:flex;gap:14px;align-items:flex-start;background:var(--surface);border:2px solid var(--line);border-radius:22px;padding:16px;min-width:0}
.mode .ic{flex:none;width:52px;height:52px;border-radius:16px;display:grid;place-items:center;font-size:1.6rem}
.mode:nth-child(4n+1) .ic{background:var(--rose-soft)}
.mode:nth-child(4n+2) .ic{background:var(--lilac-soft)}
.mode:nth-child(4n+3) .ic{background:var(--peach-soft)}
.mode:nth-child(4n+4) .ic{background:var(--ok-soft)}
.mode div{min-width:0}
.mode p{color:var(--muted);font-size:.97rem;margin-top:2px}

.levels{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:14px}
.level{display:flex;flex-direction:column;gap:10px;border-radius:26px;padding:22px 20px;text-decoration:none;color:var(--ink);min-width:0}
.level.l2{background:var(--peach-soft)}
.level.l2 .go{color:var(--peach)}
.level.l0{background:var(--rose-soft)}
.level.l1{background:var(--lilac-soft)}
.level .count{font-family:var(--display);font-weight:700;font-size:2.4rem;line-height:1.1;font-variant-numeric:tabular-nums}
.level .count small{font-size:1rem;font-family:var(--body);font-weight:600}
.level p{color:var(--ink)}
.level .note{font-size:.9rem;font-weight:600;opacity:.8}
.level .go{margin-top:auto;font-family:var(--display);font-weight:700;color:var(--rose)}
.level.l1 .go{color:var(--lilac)}

.themes{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.tile{display:flex;flex-direction:column;gap:2px;background:var(--surface);border:2px solid var(--line);border-radius:20px;padding:14px;text-decoration:none;color:var(--ink);min-width:0}
.tile:hover{border-color:var(--rose)}
.tile .e{font-size:1.9rem;line-height:1.2}
.tile b{font-family:var(--display);font-size:1.02rem;line-height:1.3}
.tile small{color:var(--muted);font-size:.82rem}
.more{align-self:flex-start;font-weight:700}

.phrases{display:grid;grid-template-columns:minmax(0,1fr);gap:10px}
.phrase{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center;width:100%;background:var(--surface);border:2px solid var(--line);border-radius:18px;padding:12px 16px;text-align:left;cursor:pointer}
.phrase:hover{border-color:var(--rose)}
.phrase span{display:flex;flex-direction:column;min-width:0}
.phrase b{font-family:var(--display);font-size:1.15rem;line-height:1.35}
.phrase em{font-style:normal;color:var(--rose);font-weight:600;font-size:.95rem}
.phrase i{font-style:normal;color:var(--muted);font-size:.95rem}

.final{background:var(--rose);color:var(--on-rose);border-radius:30px;padding:34px 20px;align-items:center;text-align:center;gap:12px}
.final p{max-width:32em}
.final .btn{background:var(--surface);color:var(--ink)}
.final .ctas{justify-content:center;width:100%;max-width:520px}
.final .btn.ghost{background:transparent;color:var(--on-rose);border-color:var(--on-rose)}

/* Forms */
.box{max-width:430px;margin:28px auto;background:var(--surface);border:2px solid var(--line);border-radius:26px;padding:24px 20px}
.box.wide{max-width:1040px}
.box h1{font-size:1.7rem}
.box h2{font-size:1.2rem}
label{display:block;font-weight:600;font-size:.95rem;margin:14px 0 6px}
input[type=email],input[type=password],input[type=text],.box select,.box textarea{width:100%;font:inherit;font-size:1rem;padding:12px 14px;border-radius:14px;border:2px solid var(--line);background:var(--bg);color:var(--ink)}
.box textarea{resize:vertical;min-height:140px}
.box .btn{width:100%;margin-top:18px}
.box .gbtn{margin-top:14px}
.hint{color:var(--muted);font-size:.88rem;margin:4px 0 0}
.err{background:var(--bad-soft);color:var(--bad);border-radius:14px;padding:10px 14px;font-size:.95rem;margin:10px 0}
.okmsg{background:var(--ok-soft);color:var(--ok);border-radius:14px;padding:10px 14px;font-size:.95rem;margin:10px 0}
.alt{text-align:center;color:var(--muted);font-size:.95rem;margin-top:16px}
.or{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:.88rem;margin:16px 0 0}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
.forgot{display:block;text-align:right;font-size:.88rem;margin-top:8px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:14px 0}
.stats.four{grid-template-columns:repeat(2,minmax(0,1fr))}
.stat{background:var(--rose-soft);border-radius:16px;padding:12px 6px;text-align:center;min-width:0}
.stat b{display:block;font-family:var(--display);font-size:1.5rem;color:var(--rose);font-variant-numeric:tabular-nums}
.stat span{font-size:.8rem;color:var(--muted)}
.danger{border-color:var(--bad-soft)}

/* Admin */
.afilter{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 12px}
.afilter input{flex:1 1 180px;width:auto}
.afilter .btn{width:auto;margin-top:0}
.ascroll{overflow-x:auto}
.at{border-collapse:collapse;width:100%;font-size:.92rem}
.at th{text-align:left;color:var(--muted);font-size:.8rem;padding:8px;border-bottom:2px solid var(--line)}
.at td{padding:9px 8px;border-bottom:1px solid var(--line);vertical-align:top}
.at small{color:var(--muted)}

/* Legal + footer */
.legal{max-width:760px}
.legal h1{font-size:clamp(1.5rem,5vw,1.9rem);margin:24px 0 4px}
.legal h2{font-size:1.08rem;margin:22px 0 6px}
.legal p{margin:0 0 8px;font-size:.98rem}
.legal .muted{color:var(--muted)}
.foot{max-width:1080px;margin:0 auto;padding:22px 16px 30px;color:var(--muted);font-size:.88rem;display:flex;flex-wrap:wrap;gap:6px 18px;justify-content:space-between;border-top:1px solid var(--line)}
.foot a{color:inherit}

@media (min-width:600px){.modes,.phrases{grid-template-columns:repeat(2,minmax(0,1fr))}.stats.four{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (min-width:860px){
  .hero{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center;margin-block:48px 0}
  .anatomy{grid-template-columns:minmax(0,1fr) minmax(0,1fr);padding:34px;gap:34px;align-items:center}
  .ctas .btn{flex:0 1 auto}
}
@media (max-width:480px){.hide-s{display:none}.logo{font-size:1rem}.logo .fl{width:24px;height:24px}.navlink{font-size:.85rem;padding:2px}nav{gap:5px}.pill{min-width:38px;padding:0 6px}}
@media (prefers-reduced-motion:reduce){.card-in{transition:none}.btn{transition:none}}

.lvcard{display:flex;align-items:center;gap:14px;background:var(--rose-soft);border-radius:22px;padding:14px 16px}
.lvbadge{flex:none;width:64px;height:64px;border-radius:18px;background:var(--rose);color:var(--on-rose);display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:26px}
.lvtx{display:flex;flex-direction:column;gap:3px;min-width:0;flex:1}
.lvtx b{font-family:var(--display);font-size:1.05rem;line-height:1.3}
.lvtx span{font-size:.9rem;color:var(--muted);font-variant-numeric:tabular-nums}
.bar{height:8px;border-radius:99px;background:var(--line);overflow:hidden;display:block}
.bar i{display:block;height:100%;background:var(--rose);border-radius:99px}