:root{--ink:#2A1131;--paper:#F4F5F9;--deep:#E6E8F0;--mango:#FFC83D;--saffron:#FF9F1C;--taxi:#FF4FA3;--coral:#FF6B4A;--jade:#1FB39A;--orchid:#8B5CF6;--sky:#2F8CFF;--lime:#C9F23F;--white:#fff;--muted:rgba(42,17,49,.66);--display:'Outfit',system-ui,sans-serif;--body:'IBM Plex Sans Thai',system-ui,sans-serif;--thai:'IBM Plex Sans Thai Looped','IBM Plex Sans Thai',system-ui,sans-serif}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.55}
a{color:inherit}
.wrap{max-width:720px;margin:0 auto;padding:16px 20px 64px}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 0 20px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:800;font-size:20px;text-decoration:none}
.brand img{width:36px;height:36px;border-radius:10px}
.top nav{display:flex;gap:14px;font-size:14px;font-weight:600}
.top nav a{text-decoration:none;color:var(--muted)}
.crumbs{font-size:13px;color:var(--muted);margin:0 0 10px}.crumbs a{text-decoration:none}
h1{font-family:var(--display);font-weight:800;font-size:clamp(26px,5vw,36px);line-height:1.1;margin:0 0 18px;letter-spacing:-.01em;text-wrap:balance}
h2{font-family:var(--display);font-weight:700;font-size:22px;margin:36px 0 12px}
.hero{background:var(--white);border-radius:24px;padding:24px;box-shadow:0 6px 16px rgba(42,17,49,.08)}
.hero.c-mango{background:var(--mango)}.hero.c-jade{background:var(--jade);color:#fff}.hero.c-orchid{background:var(--orchid);color:#fff}.hero.c-taxi{background:var(--taxi);color:#fff}
.thai{font-family:var(--thai);font-size:clamp(40px,10vw,64px);line-height:1.25;font-weight:600;word-break:keep-all;overflow-wrap:anywhere}
.roman{font-size:22px;margin:4px 0 0;opacity:.85}
.en{font-size:20px;font-weight:600;margin:10px 0 0}
.tones{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 0;font-size:14px}
.tones span{display:inline-flex;align-items:center;gap:6px;background:rgba(42,17,49,.08);border-radius:999px;padding:4px 12px 4px 8px}
.hero.c-jade .tones span,.hero.c-orchid .tones span,.hero.c-taxi .tones span{background:rgba(255,255,255,.18)}
.tone path{stroke:currentColor}
.tone-low path{stroke:var(--sky)}.tone-falling path{stroke:var(--coral)}.tone-high path{stroke:var(--mango)}.tone-rising path{stroke:var(--jade)}.tone-mid path{stroke:currentColor;opacity:.6}
.hero.c-mango .tone-high path{stroke:#fff}
.play{display:inline-flex;align-items:center;gap:10px;margin:18px 0 0;border:0;border-radius:999px;padding:12px 20px;font:600 16px var(--body);background:var(--ink);color:#fff;cursor:pointer}
.play:disabled{opacity:.5}
.note{margin:18px 0 0;font-size:16px;opacity:.9}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;margin:18px 0 0;font-size:15px}
.kv dt{color:var(--muted);font-weight:600}.kv dd{margin:0}
.ex{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.ex li{background:var(--white);border-radius:16px;padding:14px 16px}
.ex .t{font-family:var(--thai);font-size:24px;font-weight:600}.ex .r{color:var(--muted);font-size:15px}.ex .e{margin-top:2px}
.chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0}
.chips a{display:inline-block;background:var(--white);border-radius:999px;padding:8px 14px;text-decoration:none;font-size:15px;box-shadow:0 2px 6px rgba(42,17,49,.06)}
.chips a b{font-family:var(--thai);font-weight:600;margin-right:6px}
.card{display:block;background:var(--orchid);color:#fff;border-radius:20px;padding:18px 20px;text-decoration:none;margin:0}
.card .k{font-size:12px;letter-spacing:.1em;font-weight:700;opacity:.8}.card .t{font-family:Georgia,serif;font-size:22px;margin-top:4px}
.cta{margin:40px 0 0;background:var(--ink);color:#fff;border-radius:24px;padding:24px;display:grid;gap:12px}
.cta h2{margin:0;color:var(--lime)}.cta p{margin:0;opacity:.9}
.cta .btns{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.btn{display:inline-block;border-radius:999px;padding:12px 20px;font-weight:700;text-decoration:none;background:var(--lime);color:var(--ink)}
.btn.ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.4)}
.list{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.list li a{display:flex;justify-content:space-between;gap:12px;background:var(--white);border-radius:14px;padding:12px 16px;text-decoration:none}
.list li a b{font-family:var(--thai);font-weight:600;font-size:20px}.list li a span{color:var(--muted);text-align:right}
.units{display:grid;gap:12px;list-style:none;padding:0;margin:0}
.units li a{display:block;border-radius:20px;padding:18px 20px;text-decoration:none;color:var(--ink)}
.units .A1 a{background:var(--mango)}.units .A2 a{background:var(--jade);color:#fff}.units .B1 a{background:var(--orchid);color:#fff}.units .B2 a{background:var(--taxi);color:#fff}
.units .lvl{font-size:12px;letter-spacing:.1em;font-weight:700;opacity:.8}.units .ti{font-family:var(--display);font-weight:800;font-size:22px}.units .th{font-family:var(--thai);font-size:18px;opacity:.9}.units .n{font-size:13px;opacity:.8;margin-top:4px}
footer{margin-top:48px;font-size:13px;color:var(--muted)}footer a{color:inherit}
.lead{font-size:18px;color:var(--muted);margin:-6px 0 24px}
.plan{list-style:none;padding:0;margin:4px 0 0;display:grid;gap:10px}
.plan li{border-left:3px solid var(--lime);padding:2px 0 2px 12px}
.plan b{display:block;font-size:13px;letter-spacing:.08em;color:var(--lime)}
.plan span{opacity:.9;font-size:15px}
.price{font-family:var(--display);font-weight:800;font-size:56px;line-height:1}
.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:10px}
.steps li{counter-increment:s;background:var(--white);border-radius:16px;padding:14px 16px 14px 52px;position:relative}
.steps li::before{content:counter(s);position:absolute;left:16px;top:12px;width:26px;height:26px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px}
.btn.disabled{opacity:.55;pointer-events:none}
@media (max-width:480px){.wrap{padding:12px 16px 48px}.hero{padding:20px}.top nav{gap:10px;font-size:13px}}