/* KrobkruaT v7 "Sky Academy" game UI — one theme for the whole site.
   Breakpoints: phone < 768px (bottom dock) · tablet 768–1023px · desktop >= 1024px (top bar with tabs).
   Rules: body text >= 14px, labels >= 12px, every tap target >= 44px, one navigation per screen size.
   Display type: Kanit ExtraBold Italic with a navy outline (game titles); UI labels: Kanit SemiBold; reading text: IBM Plex Sans Thai Looped. */

@font-face { font-family: 'Kanit'; src: url('../fonts/kanit-800i.woff2') format('woff2'); font-weight: 800; font-style: italic; font-display: swap; }
@font-face { font-family: 'Kanit'; src: url('../fonts/kanit-600.woff2') format('woff2'); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: 'IBM Plex Sans Thai Looped'; src: url('../fonts/plex-looped-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'IBM Plex Sans Thai Looped'; src: url('../fonts/plex-looped-500.woff2') format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'IBM Plex Sans Thai Looped'; src: url('../fonts/plex-looped-600.woff2') format('woff2'); font-weight: 600; font-display: swap; }

:root {
  --kt-navy: #0A2463; --kt-navy-2: #071A4A; --kt-royal: #1356D6; --kt-blue: #2F8CFF; --kt-sky: #6FD0FF; --kt-ice: #EAF5FF;
  --kt-ink: #0A1F4D; --kt-ink-2: #2D4470; --kt-ink-3: #55698F;
  --kt-gold-1: #FFF3B0; --kt-gold-2: #FFD23F; --kt-gold-3: #F5A700; --kt-gold-edge: #B86E00; --kt-gold-ink: #4A2C00;
  --kt-ok: #2DBE4E; --kt-ok-edge: #17863A; --kt-warn: #FF7A1A; --kt-gem: #A25CFF;
  --kt-title: 'Kanit', 'Leelawadee UI', Tahoma, sans-serif; --kt-ui: 'Kanit', 'Leelawadee UI', Tahoma, sans-serif;
  --kt-body: 'IBM Plex Sans Thai Looped', 'Leelawadee UI', Tahoma, sans-serif;
  --kt-tap: 44px; --kt-topbar-h: 68px; --kt-dock-h: 72px; --kt-gutter: 16px; --kt-max: 1200px;
  --kt-frame: inset 0 0 0 2px #FFFFFF, 0 0 0 3px #8CCBFF, 0 0 0 5px #FFFFFF, 0 6px 0 5px #2C6FD6, 0 20px 36px -12px rgba(6, 40, 110, .55);
}
@media (min-width: 768px) { :root { --kt-gutter: 24px; } }
@media (min-width: 1024px) { :root { --kt-gutter: 32px; } }

/* subjects stay pastel and only appear inside that subject; exams keep their own saturated identity */
[data-subject="math"]    { --s-1: #EEF4FF; --s-2: #C4D9FF; --s-ink: #1E3F8C; --s-accent: #2F6FE0; --s-rgb: 47, 111, 224; }
[data-subject="science"] { --s-1: #E6F8F2; --s-2: #BDEBDD; --s-ink: #0B6B5B; --s-accent: #12A88F; --s-rgb: 18, 168, 143; }
[data-subject="thai"]    { --s-1: #FFEFE7; --s-2: #FFD0BD; --s-ink: #9A3518; --s-accent: #E0563A; --s-rgb: 224, 86, 58; }
[data-subject="english"] { --s-1: #F3EEFF; --s-2: #DCCFFF; --s-ink: #4A32A8; --s-accent: #7B5BE6; --s-rgb: 123, 91, 230; }
[data-subject="biology"] { --s-1: #F1F9E6; --s-2: #D3EDB6; --s-ink: #345F12; --s-accent: #5C9E1F; --s-rgb: 92, 158, 31; }
[data-exam="nt"]   { --e-1: #FFB53B; --e-2: #D9730D; --e-3: #8A4300; }
[data-exam="onet"] { --e-1: #3B7BEA; --e-2: #173E8C; --e-3: #0A2160; }
[data-exam="mock"] { --e-1: #3A4352; --e-2: #1B2029; --e-3: #0B0E13; }
[data-mode="learn"] { --m-1: #59B4FF; --m-2: #1356D6; --m-3: #0A3A9A; }
[data-mode="exam"]  { --m-1: #3E6FD8; --m-2: #142F7A; --m-3: #0A1A4D; }
[data-mode="play"]  { --m-1: #FFB054; --m-2: #F2620F; --m-3: #A33A00; }

/* ---------- base + sky world backdrop ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; min-height: 100vh; background: #8FCBFF; color: var(--kt-ink); font: 400 16px/1.6 var(--kt-body); -webkit-font-smoothing: antialiased; }
body::before { content: ""; position: fixed; inset: 0; z-index: -3; background: #8FCBFF url('../img/game/bg-tall-900.webp') center top / cover no-repeat; }
body::after { content: ""; position: fixed; inset: 0; z-index: -2; pointer-events: none; background: radial-gradient(90% 55% at 78% -8%, rgba(255, 250, 225, .55), transparent 62%), linear-gradient(180deg, rgba(10, 36, 99, 0) 55%, rgba(10, 36, 99, .16)); }
@media (min-width: 768px) { body::before { background-image: url('../img/game/bg-wide-1920.webp'); } }
.kt-sparkles { position: fixed; inset: 0; z-index: -1; pointer-events: none; }
h1, h2, h3 { margin: 0; line-height: 1.2; text-wrap: balance; }
p { margin: 0; }
img { max-width: 100%; display: block; }
a { color: var(--kt-royal); }
:focus-visible { outline: 3px solid var(--kt-gold-2); outline-offset: 3px; border-radius: 10px; }
.kt-page { max-width: calc(var(--kt-max) + 2 * var(--kt-gutter)); margin: 0 auto; padding-left: max(var(--kt-gutter), env(safe-area-inset-left, 0px)); padding-right: max(var(--kt-gutter), env(safe-area-inset-right, 0px)); }
.kt-stack { display: flex; flex-direction: column; gap: 16px; }
.kt-section { margin-top: 40px; }
.kt-section-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.kt-muted { color: var(--kt-ink-3); font-size: 14px; }
.kt-grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--kt-min, 220px)), 1fr)); }
@media (max-width: 767px) { .kt-hide-phone { display: none !important; } }
@media (min-width: 768px) { .kt-only-phone { display: none !important; } }

/* ---------- game type ---------- */
.kt-title { font: italic 800 clamp(32px, 5.4vw, 56px)/1.18 var(--kt-title); color: #FFFFFF; -webkit-text-stroke: 7px var(--kt-navy); paint-order: stroke fill; text-shadow: 0 5px 0 var(--kt-navy), 0 12px 22px rgba(4, 20, 60, .35); letter-spacing: .01em; }
.kt-title--gold { color: #FFE27A; }
.kt-title--sm { font-size: clamp(26px, 3.6vw, 36px); -webkit-text-stroke-width: 6px; text-shadow: 0 4px 0 var(--kt-navy), 0 10px 18px rgba(4, 20, 60, .3); }
.kt-title--ink { color: var(--s-ink); -webkit-text-stroke-color: #FFFFFF; text-shadow: 0 4px 0 rgba(var(--s-rgb), .35), 0 10px 18px rgba(var(--s-rgb), .25); }
.kt-plaque { position: relative; isolation: isolate; align-self: flex-start; display: inline-flex; align-items: center; gap: 10px; min-height: 46px; padding: 6px 34px; color: #FFFFFF; font: italic 800 20px/1.2 var(--kt-title); text-shadow: 0 2px 0 #062B66; filter: drop-shadow(0 4px 0 rgba(6, 43, 102, .85)) drop-shadow(0 10px 14px rgba(4, 20, 60, .28)); margin: 0; }
.kt-plaque::before, .kt-plaque::after { content: ""; position: absolute; z-index: -1; clip-path: polygon(16px 0, calc(100% - 16px) 0, 100% 50%, calc(100% - 16px) 100%, 16px 100%, 0 50%); }
.kt-plaque::before { inset: 0; background: linear-gradient(180deg, var(--kt-gold-1), var(--kt-gold-2) 45%, var(--kt-gold-3)); }
.kt-plaque::after { inset: 3px 4px; background: linear-gradient(180deg, #4FA8FF, var(--kt-royal) 55%, #0B3F9A); }
.kt-plaque img { width: 34px; height: 34px; margin: -6px 0 -6px -14px; filter: drop-shadow(0 2px 2px rgba(0, 0, 0, .35)); }
.kt-tag { display: inline-flex; align-items: center; gap: 6px; padding: 3px 12px; border-radius: 9px; font: italic 800 13px/1.4 var(--kt-title); letter-spacing: .03em; color: #FFFFFF; background: linear-gradient(180deg, #FF7D9C, #E0245E); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .5), 0 3px 0 #9C0F3A; }
.kt-tag--gold { color: var(--kt-gold-ink); background: linear-gradient(180deg, var(--kt-gold-1), var(--kt-gold-2) 55%, var(--kt-gold-3)); box-shadow: inset 0 1px 0 #FFFFFF, 0 3px 0 var(--kt-gold-edge); }
.kt-tag--blue { background: linear-gradient(180deg, #6FC2FF, var(--kt-royal)); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .5), 0 3px 0 #0B3F9A; }
.kt-tag svg { width: 14px; height: 14px; }

/* ---------- shell: top bar (>= 768) + bottom dock (< 768) ---------- */
.kt-topbar { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; color: #FFFFFF; background: linear-gradient(180deg, rgba(10, 36, 99, .94), rgba(19, 70, 170, .9)); box-shadow: inset 0 -2px 0 rgba(255, 210, 63, .9), 0 10px 26px -12px rgba(4, 20, 60, .7); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
body::selection { background: var(--kt-gold-2); }
.kt-topbar__in { height: var(--kt-topbar-h); display: flex; align-items: center; gap: 12px; }
.kt-brand { display: flex; align-items: center; gap: 10px; min-height: var(--kt-tap); color: #FFFFFF; text-decoration: none; margin-right: auto; }
.kt-brand img { width: 46px; height: 46px; filter: drop-shadow(0 3px 4px rgba(0, 0, 0, .35)); }
.kt-brand__name { font: italic 800 21px/1 var(--kt-title); text-shadow: 0 2px 0 var(--kt-navy-2); white-space: nowrap; }
.kt-seg { display: none; gap: 6px; }
.kt-seg a { display: inline-flex; align-items: center; gap: 8px; min-height: var(--kt-tap); padding: 0 16px 0 6px; border-radius: 14px; font: 600 16px/1 var(--kt-ui); color: #D7E8FF; text-decoration: none; transition: background .15s, transform .15s; }
.kt-seg a img { width: 32px; height: 32px; filter: drop-shadow(0 2px 2px rgba(0, 0, 0, .35)); }
.kt-seg a:hover { background: rgba(255, 255, 255, .12); color: #FFFFFF; }
.kt-seg a[aria-current="page"] { background: linear-gradient(180deg, var(--kt-gold-1), var(--kt-gold-2) 55%, var(--kt-gold-3)); color: var(--kt-gold-ink); box-shadow: inset 0 1px 0 #FFFFFF, 0 3px 0 var(--kt-gold-edge), 0 0 20px rgba(255, 210, 63, .55); }
.kt-hud { display: flex; align-items: center; gap: 8px; }
.kt-res { display: inline-flex; align-items: center; gap: 4px; height: 36px; padding: 0 12px 0 2px; border-radius: 999px; background: rgba(4, 18, 56, .55); box-shadow: inset 0 0 0 1.5px rgba(255, 210, 63, .65); font: 600 15px/1 var(--kt-ui); color: #FFFFFF; font-variant-numeric: tabular-nums; }
.kt-res img { width: 32px; height: 32px; margin: -2px 0; }
.kt-me { display: inline-flex; align-items: center; gap: 8px; min-height: var(--kt-tap); padding: 2px 12px 2px 2px; border-radius: 999px; background: rgba(4, 18, 56, .55); box-shadow: inset 0 0 0 1.5px rgba(255, 210, 63, .65); color: #FFFFFF; text-decoration: none; }
.kt-me__face { position: relative; width: 42px; height: 42px; border-radius: 50%; background: linear-gradient(180deg, #BFE3FF, #6FB8FF); box-shadow: 0 0 0 2.5px var(--kt-gold-2), 0 0 0 4px var(--kt-gold-edge); }
.kt-me__face img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; object-position: top; }
.kt-me__lv { display: flex; flex-direction: column; gap: 3px; font: 600 14px/1 var(--kt-ui); }
.kt-me__lv .kt-bar { width: 64px; height: 7px; box-shadow: inset 0 1px 2px rgba(0, 0, 0, .45); }
.kt-me[aria-current="page"] { box-shadow: inset 0 0 0 2px var(--kt-gold-2), 0 0 18px rgba(255, 210, 63, .55); }
.kt-teacher { display: none; min-height: var(--kt-tap); align-items: center; padding: 0 10px; font: 600 15px/1 var(--kt-ui); color: #CFE4FF; text-decoration: none; }
.kt-teacher:hover { color: #FFFFFF; }
@media (min-width: 768px) { .kt-seg { display: flex; } .kt-teacher { display: inline-flex; } }
@media (max-width: 1023px) { .kt-seg a { padding: 0 12px 0 4px; } .kt-seg a img { width: 28px; height: 28px; } .kt-brand__name { font-size: 18px; } .kt-hud .kt-res--gem { display: none; } }
@media (max-width: 767px) { .kt-topbar .kt-btn, .kt-topbar .kt-me { display: none; } :root { --kt-topbar-h: 60px; } .kt-brand img { width: 40px; height: 40px; } }

.kt-tabbar { position: fixed; z-index: 60; left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 2px; padding: 6px max(6px, env(safe-area-inset-left, 0px)) calc(8px + env(safe-area-inset-bottom, 0px)) max(6px, env(safe-area-inset-right, 0px)); background: linear-gradient(180deg, rgba(19, 70, 170, .96), rgba(7, 26, 74, .98)); box-shadow: inset 0 2px 0 rgba(255, 210, 63, .9), 0 -12px 30px -14px rgba(4, 20, 60, .7); }
.kt-tabbar a { position: relative; min-height: 58px; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; gap: 2px; border-radius: 14px; color: #CFE4FF; text-decoration: none; font: 600 12.5px/1.1 var(--kt-ui); padding-bottom: 4px; }
.kt-tabbar a img { width: 34px; height: 34px; filter: drop-shadow(0 2px 2px rgba(0, 0, 0, .4)); transition: transform .18s; }
.kt-tabbar a .kt-tab-face { width: 34px; height: 34px; border-radius: 50%; object-fit: cover; object-position: top; background: #BFE3FF; box-shadow: 0 0 0 2px var(--kt-gold-2); }
.kt-tabbar a[aria-current="page"] { color: #FFE27A; background: radial-gradient(60% 70% at 50% 100%, rgba(255, 210, 63, .32), transparent 70%); }
.kt-tabbar a[aria-current="page"] img { transform: translateY(-5px) scale(1.16); }
body.has-tabbar { padding-bottom: calc(var(--kt-dock-h) + 20px + env(safe-area-inset-bottom, 0px)); }
@media (min-width: 768px) { .kt-tabbar { display: none; } body.has-tabbar { padding-bottom: 0; } }

/* member-only items shown to guests */
.kt-lock { display: inline-flex; align-items: center; gap: 4px; font: 600 13px/1.2 var(--kt-ui); color: inherit; opacity: .9; }
.kt-lock svg { width: 15px; height: 15px; }

/* ---------- buttons: chunky, glossy, press down ---------- */
.kt-btn { --edge: #0B3F9A; position: relative; isolation: isolate; display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 54px; padding: 0 30px; border: 0; border-radius: 16px; font: italic 800 19px/1 var(--kt-title); letter-spacing: .01em; color: #FFFFFF; text-shadow: 0 2px 0 rgba(0, 0, 0, .22); text-decoration: none; cursor: pointer; white-space: nowrap;
  background: linear-gradient(180deg, #8FD8FF 0%, #3E9BFF 45%, #1663DA 100%);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, .65), inset 0 -4px 0 rgba(0, 0, 0, .14), 0 0 0 2px rgba(255, 255, 255, .85), 0 6px 0 2px var(--edge), 0 14px 22px -8px rgba(4, 20, 60, .45);
  transition: transform .08s ease, box-shadow .08s ease; }
.kt-btn:hover { filter: brightness(1.06); }
.kt-btn:active { transform: translateY(4px); box-shadow: inset 0 2px 0 rgba(255, 255, 255, .65), inset 0 -3px 0 rgba(0, 0, 0, .14), 0 0 0 2px rgba(255, 255, 255, .85), 0 2px 0 2px var(--edge), 0 6px 12px -6px rgba(4, 20, 60, .45); }
.kt-btn svg { width: 22px; height: 22px; }
.kt-btn--sun { --edge: var(--kt-gold-edge); color: var(--kt-gold-ink); text-shadow: 0 1px 0 rgba(255, 255, 255, .7); background: linear-gradient(180deg, #FFF6C2 0%, var(--kt-gold-2) 42%, var(--kt-gold-3) 100%); }
.kt-btn--green { --edge: var(--kt-ok-edge); background: linear-gradient(180deg, #B8FF9A 0%, #4CD964 45%, #22A845 100%); }
.kt-btn--white { --edge: #8FB7E8; color: var(--kt-royal); text-shadow: none; background: linear-gradient(180deg, #FFFFFF, #E4F1FF); }
.kt-btn--subject { --edge: rgb(var(--s-rgb)); background: linear-gradient(180deg, rgba(255, 255, 255, .45), rgba(255, 255, 255, 0) 50%), var(--s-accent); filter: saturate(1.1); }
.kt-btn--sm { min-height: var(--kt-tap); padding: 0 18px; font-size: 16px; border-radius: 13px; }
.kt-btn--lg { min-height: 62px; padding: 0 38px; font-size: 22px; border-radius: 18px; }
.kt-btn--block { width: 100%; }
.kt-btn--sun::after, .kt-btn--green::after { content: ""; position: absolute; inset: 0; z-index: -1; border-radius: inherit; pointer-events: none; background: linear-gradient(105deg, transparent 38%, rgba(255, 255, 255, .8) 50%, transparent 62%) -220% 0 / 260% 100% no-repeat; animation: kt-shine 3.8s ease-in-out infinite; }
@keyframes kt-shine { 0%, 62% { background-position: -220% 0; } 100% { background-position: 220% 0; } }

/* ---------- frames ---------- */
.kt-panel { position: relative; border-radius: 22px; background: linear-gradient(180deg, #FFFFFF 0%, #EEF7FF 100%); box-shadow: var(--kt-frame); }
.kt-panel--navy { color: #FFFFFF; background: radial-gradient(120% 90% at 85% 0%, rgba(111, 208, 255, .35), transparent 55%), linear-gradient(180deg, #1D5AD1, #0B2F80 70%, #0A2463); box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .25), 0 0 0 3px var(--kt-gold-2), 0 0 0 5px var(--kt-gold-edge), 0 6px 0 5px #07163F, 0 22px 40px -12px rgba(4, 20, 60, .6); }
.kt-panel__pad { padding: 22px; }
@media (min-width: 1024px) { .kt-panel__pad { padding: 28px 32px; } }

.kt-bar { display: block; height: 14px; border-radius: 999px; background: #0A2463; box-shadow: inset 0 2px 3px rgba(0, 0, 0, .5), 0 0 0 2px rgba(255, 255, 255, .9); overflow: hidden; }
.kt-bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(180deg, #B9F4FF, #3BBEFF 50%, #1478E8); box-shadow: inset 0 2px 0 rgba(255, 255, 255, .55); }
.kt-bar--gold i { background: linear-gradient(180deg, #FFF6C2, var(--kt-gold-2) 50%, var(--kt-gold-3)); }
.kt-bar--subject i { background: linear-gradient(180deg, rgba(255, 255, 255, .55), rgba(255, 255, 255, 0) 55%), var(--s-accent); }
.kt-reward { display: inline-flex; align-items: center; gap: 2px; height: 30px; padding: 0 10px 0 2px; border-radius: 999px; background: #FFF7D6; box-shadow: inset 0 0 0 1.5px #F2C94C; font: 600 14px/1 var(--kt-ui); color: var(--kt-gold-ink); white-space: nowrap; }
.kt-reward img { width: 28px; height: 28px; margin: -2px 0; }
.kt-stars { display: inline-flex; gap: 1px; }
.kt-stars img { width: 22px; height: 22px; }
.kt-stars img.off { filter: grayscale(1) brightness(1.5); opacity: .55; }

/* ---------- home hero (guest) ---------- */
.kt-hero { position: relative; overflow: hidden; }
.kt-hero__media { display: block; position: relative; height: 380px; }
.kt-hero__media img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 44%; }
.kt-hero__media img { -webkit-mask-image: linear-gradient(180deg, #000 62%, transparent 98%); mask-image: linear-gradient(180deg, #000 62%, transparent 98%); }
.kt-hero__copy { position: relative; z-index: 1; margin-top: -84px; padding: 0 max(var(--kt-gutter), env(safe-area-inset-left, 0px)) 8px; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 14px; }
.kt-logo { display: flex; align-items: center; gap: 12px; }
.kt-logo img { width: 92px; height: 92px; filter: drop-shadow(0 8px 12px rgba(4, 20, 60, .45)); }
.kt-hero h1 { font-size: clamp(36px, 9vw, 64px); white-space: nowrap; }
.kt-hero__slogan { font: italic 800 clamp(20px, 3.4vw, 30px)/1.25 var(--kt-title); color: #FFE27A; -webkit-text-stroke: 5px var(--kt-navy); paint-order: stroke fill; text-shadow: 0 4px 0 var(--kt-navy); }
.kt-hero__cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px 14px; width: 100%; max-width: 520px; margin-top: 6px; }
.kt-hero__cta .kt-btn { flex: 1 1 200px; }
.kt-chips { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.kt-hero .kt-chips { justify-content: center; }
.kt-stat { display: inline-flex; align-items: center; gap: 6px; height: 40px; padding: 0 14px 0 4px; border-radius: 999px; background: rgba(10, 36, 99, .72); box-shadow: inset 0 0 0 1.5px rgba(255, 210, 63, .7); color: #FFFFFF; font: 600 15px/1 var(--kt-ui); }
.kt-stat img { width: 34px; height: 34px; }
.kt-stat b { font: italic 800 19px/1 var(--kt-title); color: #FFE27A; }
@media (min-width: 768px) and (max-width: 1023px) { .kt-hero__media { height: 560px; } .kt-hero__copy { margin-top: -110px; } }
@media (min-width: 1024px) {
  .kt-hero { height: clamp(600px, calc(100vh - var(--kt-topbar-h)), 780px); }
  .kt-hero__media { position: absolute; inset: 0; height: auto; }
  .kt-hero__media img { object-position: 70% 50%; }
  .kt-hero__media img { -webkit-mask-image: linear-gradient(180deg, #000 86%, transparent); mask-image: linear-gradient(180deg, #000 86%, transparent); }
  .kt-hero__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10, 36, 99, .38) 0%, rgba(10, 36, 99, .12) 34%, rgba(10, 36, 99, 0) 52%), linear-gradient(180deg, rgba(143, 203, 255, 0) 78%, rgba(143, 203, 255, .85)); }
  .kt-hero__copy { position: absolute; left: max(var(--kt-gutter), calc(50% - var(--kt-max) / 2)); top: 50%; transform: translateY(-50%); width: min(600px, 48vw); margin: 0; padding: 0; align-items: flex-start; text-align: left; gap: 18px; }
  .kt-hero__cta { justify-content: flex-start; max-width: none; }
  .kt-hero__cta .kt-btn { flex: 0 0 auto; }
  .kt-hero .kt-chips { justify-content: flex-start; }
  .kt-logo img { width: 108px; height: 108px; }
}

/* ---------- mode cards (เรียน · สอบ · เล่น) ---------- */
.kt-modes { --kt-min: 230px; }
.kt-mode { position: relative; overflow: hidden; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 6px; min-height: 250px; padding: 22px 20px 24px; border-radius: 24px; color: #FFFFFF; text-decoration: none;
  background: radial-gradient(90% 60% at 50% 18%, rgba(255, 255, 255, .45), transparent 60%), linear-gradient(180deg, var(--m-1), var(--m-2) 62%, var(--m-3));
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, .45), 0 0 0 3px var(--kt-gold-2), 0 0 0 5px var(--kt-gold-edge), 0 7px 0 5px var(--m-3), 0 22px 36px -12px rgba(4, 20, 60, .55); transition: transform .18s ease; }
.kt-mode::before { content: ""; position: absolute; inset: -40% -10% auto; height: 120%; background: repeating-conic-gradient(from 0deg at 50% 50%, rgba(255, 255, 255, .12) 0 10deg, transparent 10deg 20deg); opacity: .7; pointer-events: none; }
.kt-mode > img { position: relative; width: 132px; height: 132px; filter: drop-shadow(0 10px 14px rgba(0, 0, 0, .35)); transition: transform .25s ease; }
.kt-mode strong { position: relative; font: italic 800 34px/1.1 var(--kt-title); -webkit-text-stroke: 6px var(--m-3); paint-order: stroke fill; text-shadow: 0 4px 0 var(--m-3); }
.kt-mode span { position: relative; font-size: 15px; opacity: .95; }
.kt-mode__text { position: relative; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.kt-mode:hover { transform: translateY(-4px); }
.kt-mode:hover img { transform: scale(1.07) rotate(-3deg); }
@media (max-width: 767px) { .kt-mode { flex-direction: row; text-align: left; min-height: 0; padding: 14px 16px; gap: 14px; } .kt-mode > img { width: 84px; height: 84px; } .kt-mode strong { font-size: 28px; } .kt-mode__text { align-items: flex-start; } }

/* event banner */
.kt-event { position: relative; overflow: hidden; display: flex; flex-wrap: wrap; align-items: center; gap: 14px 22px; padding: 20px 22px; text-decoration: none; }
.kt-event::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(115deg, rgba(255, 255, 255, .07) 0 22px, transparent 22px 64px); pointer-events: none; }
.kt-event > img { position: relative; width: 96px; height: 96px; filter: drop-shadow(0 8px 10px rgba(0, 0, 0, .4)); }
.kt-event__text { position: relative; flex: 1 1 240px; display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.kt-event__text strong { font: italic 800 clamp(22px, 3vw, 28px)/1.2 var(--kt-title); text-shadow: 0 3px 0 rgba(4, 20, 60, .6); }
.kt-event .kt-btn { position: relative; }
@media (max-width: 767px) { .kt-event .kt-btn { flex: 1 1 100%; } }

/* supporters strip */
.kt-supporters { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; padding: 16px 20px; margin-top: 40px; }
.kt-supporters > img { width: 60px; height: 60px; }
.kt-supporters strong { font: 600 17px/1.3 var(--kt-ui); }

/* ---------- today: daily quests + hero card ---------- */
.kt-today { display: grid; gap: 22px; margin-top: 8px; }
@media (min-width: 1024px) { .kt-today { grid-template-columns: minmax(0, 1fr) 360px; align-items: start; } }
.kt-greet { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 10px 16px; margin: 22px 0 18px; }
.kt-streak { display: inline-flex; align-items: center; gap: 6px; height: 40px; padding: 0 14px 0 8px; border-radius: 999px; background: rgba(10, 36, 99, .72); box-shadow: inset 0 0 0 1.5px rgba(255, 210, 63, .7); color: #FFFFFF; font: 600 15px/1 var(--kt-ui); }
.kt-streak svg { width: 24px; height: 24px; color: #FF9A3D; }
.kt-quests .kt-section-head { margin-bottom: 14px; }
.kt-quest { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 4px 14px; align-items: center; padding: 14px; border-radius: 18px; background: #FFFFFF; box-shadow: inset 0 0 0 2px #D6E9FF, 0 4px 0 #C2DCFA; }
.kt-quest + .kt-quest { margin-top: 12px; }
.kt-quest > img { width: 64px; height: 64px; grid-row: span 2; filter: drop-shadow(0 4px 5px rgba(0, 0, 0, .25)); }
.kt-quest__title { display: flex; flex-direction: column; min-width: 0; }
.kt-quest__title small { font-size: 13px; color: var(--kt-ink-3); }
.kt-quest__title strong { font: 600 19px/1.3 var(--kt-ui); }
.kt-quest__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; }
.kt-quest__meta .kt-bar { flex: 1 1 100px; height: 12px; }
.kt-quest__act { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-top: 6px; }
.kt-quest.is-main { background: linear-gradient(180deg, #FFFBEA, #FFFFFF); box-shadow: inset 0 0 0 2.5px var(--kt-gold-2), 0 4px 0 var(--kt-gold-3), 0 0 26px rgba(255, 196, 0, .4); }
.kt-quest.is-done { background: #F2FFF4; box-shadow: inset 0 0 0 2px #B8EBC4, 0 4px 0 #9ADBAA; }
.kt-done { display: inline-flex; align-items: center; gap: 6px; height: var(--kt-tap); padding: 0 16px; border-radius: 13px; font: italic 800 16px/1 var(--kt-title); color: #FFFFFF; background: linear-gradient(180deg, #7BE38F, var(--kt-ok)); box-shadow: 0 3px 0 var(--kt-ok-edge); }
.kt-done svg { width: 18px; height: 18px; }
@media (min-width: 768px) { .kt-quest { grid-template-columns: 72px minmax(0, 1fr) auto; } .kt-quest > img { width: 72px; height: 72px; } .kt-quest__act { grid-column: 3; grid-row: 1 / span 2; margin: 0; flex-direction: column; align-items: flex-end; } }
.kt-chest { display: flex; align-items: center; gap: 12px; margin-top: 16px; padding: 12px 14px; border-radius: 16px; background: rgba(10, 36, 99, .06); }
.kt-chest img { width: 48px; height: 48px; }
.kt-chest .kt-bar { flex: 1; }

.kt-herocard { position: relative; overflow: hidden; display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 18px 18px 22px; text-align: center; }
.kt-pedestal { position: relative; width: 100%; height: 300px; display: grid; place-items: end center; }
.kt-pedestal::before { content: ""; position: absolute; left: 50%; bottom: 6px; width: 220px; height: 54px; transform: translateX(-50%); border-radius: 50%; background: radial-gradient(50% 50% at 50% 50%, #FFFFFF 0%, #CFF3FF 35%, rgba(111, 208, 255, .55) 65%, rgba(111, 208, 255, 0) 100%); box-shadow: 0 0 46px 6px rgba(150, 225, 255, .75); }
.kt-pedestal::after { content: ""; position: absolute; left: 50%; bottom: 0; width: 250px; height: 66px; transform: translateX(-50%); border-radius: 50%; border: 3px solid rgba(255, 210, 63, .85); box-shadow: 0 0 18px rgba(255, 210, 63, .6); }
.kt-pedestal > img { position: relative; z-index: 1; height: 290px; width: auto; filter: drop-shadow(0 12px 14px rgba(4, 20, 60, .35)); }
.kt-lvbadge { position: absolute; z-index: 2; top: 8px; left: 8px; width: 64px; height: 64px; display: grid; place-items: center; }
.kt-lvbadge img { position: absolute; inset: 0; width: 100%; height: 100%; }
.kt-lvbadge b { position: relative; font: italic 800 24px/1 var(--kt-title); color: #FFFFFF; -webkit-text-stroke: 4px var(--kt-navy); paint-order: stroke fill; }
.kt-herocard .kt-bar { width: 100%; }
.kt-xp-line { display: flex; justify-content: space-between; width: 100%; font: 600 14px/1 var(--kt-ui); opacity: .92; }
@media (max-width: 1023px) { .kt-herocard { flex-direction: row; flex-wrap: wrap; text-align: left; } .kt-pedestal { width: 120px; height: 150px; } .kt-pedestal::before { width: 110px; height: 30px; } .kt-pedestal::after { width: 120px; height: 36px; } .kt-pedestal > img { height: 148px; } .kt-herocard__info { flex: 1 1 180px; display: flex; flex-direction: column; gap: 8px; } .kt-lvbadge { width: 48px; height: 48px; } .kt-lvbadge b { font-size: 18px; } }

/* ---------- learn hub ---------- */
.kt-continue { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 6px 16px; align-items: center; padding: 18px 20px; }
.kt-continue > img { width: 76px; height: 76px; grid-row: span 2; filter: drop-shadow(0 6px 8px rgba(0, 0, 0, .25)); }
.kt-continue__text small { font-size: 14px; color: var(--kt-ink-3); }
.kt-continue__text strong { display: block; font: italic 800 26px/1.2 var(--kt-title); color: var(--kt-ink); }
.kt-continue .kt-btn { grid-column: 1 / -1; }
.kt-continue .kt-bar { grid-column: 2; }
@media (min-width: 768px) { .kt-continue { grid-template-columns: 90px minmax(0, 1fr) auto; } .kt-continue > img { width: 90px; height: 90px; } .kt-continue .kt-btn { grid-column: 3; grid-row: 1 / span 2; } }
.kt-subjects { --kt-min: 200px; }
.kt-subject-card { position: relative; display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 0 16px 18px; margin-top: 40px; border-radius: 22px; text-align: center; text-decoration: none; color: var(--s-ink);
  background: radial-gradient(80% 50% at 50% 0%, rgba(255, 255, 255, .9), transparent 70%), linear-gradient(180deg, var(--s-1), var(--s-2));
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .9), 0 0 0 3px var(--kt-gold-2), 0 0 0 5px var(--kt-gold-edge), 0 6px 0 5px rgba(var(--s-rgb), .85), 0 20px 30px -12px rgba(var(--s-rgb), .6); transition: transform .18s ease; }
.kt-subject-card > img { width: 112px; height: 112px; margin-top: -48px; filter: drop-shadow(0 8px 10px rgba(0, 0, 0, .3)); transition: transform .25s; }
.kt-subject-card strong { font: italic 800 26px/1.15 var(--kt-title); color: var(--s-ink); -webkit-text-stroke: 5px #FFFFFF; paint-order: stroke fill; }
.kt-subject-card small { font: 600 14px/1.2 var(--kt-ui); opacity: .9; }
.kt-subject-card .kt-bar { width: 100%; height: 10px; }
.kt-subject-card:hover { transform: translateY(-4px); }
.kt-subject-card:hover img { transform: scale(1.06) rotate(-4deg); }
@media (max-width: 767px) { .kt-subjects { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 14px; } .kt-subject-card > img { width: 92px; height: 92px; margin-top: -40px; } .kt-subject-card strong { font-size: 21px; } }
.kt-tile { display: flex; align-items: center; gap: 14px; min-height: 84px; padding: 14px 16px; border-radius: 18px; text-decoration: none; color: var(--kt-ink); background: #FFFFFF; box-shadow: inset 0 0 0 2px #D6E9FF, 0 5px 0 #B9D5F7, 0 14px 22px -12px rgba(6, 40, 110, .45); transition: transform .15s; }
.kt-tile:hover { transform: translateY(-2px); }
.kt-tile > img { width: 56px; height: 56px; filter: drop-shadow(0 4px 5px rgba(0, 0, 0, .25)); }
.kt-tile strong { display: block; font: 600 18px/1.25 var(--kt-ui); }
.kt-tile span span { font-size: 14px; color: var(--kt-ink-3); }

/* ---------- subject page: banner + stage map ---------- */
.kt-subject { position: relative; overflow: hidden; display: grid; grid-template-columns: 96px minmax(0, 1fr); align-items: center; gap: 12px 18px; padding: 18px 20px 20px; border-radius: 24px; color: var(--s-ink);
  background: radial-gradient(70% 90% at 90% 0%, rgba(255, 255, 255, .85), transparent 60%), linear-gradient(150deg, var(--s-1), var(--s-2));
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .9), 0 0 0 3px var(--kt-gold-2), 0 0 0 5px var(--kt-gold-edge), 0 7px 0 5px rgba(var(--s-rgb), .85), 0 22px 36px -14px rgba(var(--s-rgb), .6); }
.kt-subject__pattern { position: absolute; inset: 0; width: 100%; height: 100%; color: var(--s-accent); opacity: .55; pointer-events: none; }
.kt-subject > img { position: relative; width: 96px; height: 96px; filter: drop-shadow(0 8px 10px rgba(0, 0, 0, .3)); }
.kt-subject__title { position: relative; }
.kt-subject__title span { font: 600 14px/1 var(--kt-ui); opacity: .85; }
.kt-subject__stats { position: relative; grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; padding: 10px 14px; border-radius: 16px; background: rgba(255, 255, 255, .72); box-shadow: inset 0 0 0 1.5px rgba(var(--s-rgb), .2); }
.kt-subject__stats .kt-bar { flex: 1 1 160px; }
.kt-subject__stats strong { font: 600 16px/1.2 var(--kt-ui); }
.kt-subject__stats small { font: 600 14px/1.2 var(--kt-ui); color: #B4560A; }
.kt-subject .kt-btn { position: relative; grid-column: 1 / -1; }
@media (min-width: 768px) { .kt-subject { grid-template-columns: 150px minmax(0, 1fr) auto; padding: 26px 32px; gap: 14px 28px; } .kt-subject > img { width: 150px; height: 150px; grid-row: span 2; } .kt-subject__stats { grid-column: 2; } .kt-subject .kt-btn { grid-column: 3; grid-row: 1 / span 2; } }

.kt-map { position: relative; margin-top: 8px; }
.kt-map svg.kt-map__path { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.kt-map--h { height: 330px; display: none; }
.kt-map--v { display: block; }
@media (min-width: 768px) { .kt-map--h { display: block; } .kt-map--v { display: none; } }
.kt-node { position: absolute; transform: translate(-50%, -50%); display: flex; flex-direction: column; align-items: center; gap: 6px; text-decoration: none; color: var(--kt-ink); z-index: 1; }
.kt-node__orb { position: relative; width: 78px; height: 78px; display: grid; place-items: center; border-radius: 50%; font: italic 800 30px/1 var(--kt-title); color: #FFFFFF; -webkit-text-stroke: 4px rgba(0, 0, 0, .25); paint-order: stroke fill;
  background: radial-gradient(60% 50% at 35% 28%, rgba(255, 255, 255, .85), transparent 60%), linear-gradient(180deg, #C7D2E3, #8796B0); box-shadow: inset 0 -5px 0 rgba(0, 0, 0, .15), 0 0 0 4px #FFFFFF, 0 6px 0 4px #6E7D98, 0 14px 20px -8px rgba(4, 20, 60, .5); }
.kt-node__orb svg { width: 32px; height: 32px; color: #FFFFFF; filter: drop-shadow(0 2px 0 rgba(0, 0, 0, .25)); }
.kt-node.is-done .kt-node__orb { background: radial-gradient(60% 50% at 35% 28%, rgba(255, 255, 255, .9), transparent 60%), linear-gradient(180deg, #FFE27A, var(--kt-gold-3)); box-shadow: inset 0 -5px 0 rgba(0, 0, 0, .12), 0 0 0 4px #FFFFFF, 0 6px 0 4px var(--kt-gold-edge), 0 14px 20px -8px rgba(4, 20, 60, .5); }
.kt-node.is-current .kt-node__orb { width: 96px; height: 96px; font-size: 38px; background: radial-gradient(60% 50% at 35% 28%, rgba(255, 255, 255, .8), transparent 60%), var(--s-accent); box-shadow: inset 0 -6px 0 rgba(0, 0, 0, .18), 0 0 0 5px #FFFFFF, 0 7px 0 5px rgb(var(--s-rgb)), 0 0 0 14px rgba(var(--s-rgb), .25), 0 18px 26px -8px rgba(4, 20, 60, .55); }
.kt-node.is-current .kt-node__orb::after { content: ""; position: absolute; inset: -14px; border-radius: 50%; border: 3px solid rgba(var(--s-rgb), .7); animation: kt-pulse 1.8s ease-out infinite; }
@keyframes kt-pulse { 0% { transform: scale(.85); opacity: 1; } 100% { transform: scale(1.35); opacity: 0; } }
.kt-node__pin { position: absolute; bottom: calc(100% + 6px); left: 50%; transform: translateX(-50%); width: 52px; height: 52px; border-radius: 50%; background: #BFE3FF; box-shadow: 0 0 0 3px var(--kt-gold-2), 0 0 0 5px var(--kt-gold-edge), 0 8px 12px rgba(0, 0, 0, .3); animation: kt-bob 2.4s ease-in-out infinite; }
.kt-node__pin img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; object-position: top; }
.kt-node__pin::after { content: ""; position: absolute; left: 50%; top: 100%; margin-left: -7px; border: 7px solid transparent; border-top: 9px solid var(--kt-gold-edge); }
@keyframes kt-bob { 0%, 100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, -6px); } }
.kt-node.is-current .kt-node__label { margin-top: 10px; }
.kt-node__label { padding: 4px 12px; border-radius: 999px; background: #FFFFFF; box-shadow: 0 3px 0 #B9D5F7, 0 6px 12px -6px rgba(4, 20, 60, .4); font: 600 14px/1.3 var(--kt-ui); white-space: nowrap; }
.kt-node.is-current .kt-node__label { background: var(--s-ink); color: #FFFFFF; box-shadow: 0 3px 0 rgba(0, 0, 0, .3); }
.kt-node .kt-stars img { width: 20px; height: 20px; }

/* ---------- exam hub: arenas ---------- */
.kt-arenas { --kt-min: 260px; }
.kt-arena { position: relative; overflow: hidden; display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 22px 20px 22px; border-radius: 24px; text-align: center; color: #FFFFFF; text-decoration: none;
  background: radial-gradient(90% 60% at 50% 10%, rgba(255, 255, 255, .35), transparent 60%), linear-gradient(180deg, var(--e-1), var(--e-2) 60%, var(--e-3));
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, .35), 0 0 0 3px var(--kt-gold-2), 0 0 0 5px var(--kt-gold-edge), 0 7px 0 5px var(--e-3), 0 22px 36px -12px rgba(4, 20, 60, .6); }
.kt-arena::before { content: ""; position: absolute; inset: -30% -20% auto; height: 110%; background: repeating-conic-gradient(from 0deg at 50% 50%, rgba(255, 255, 255, .1) 0 9deg, transparent 9deg 18deg); pointer-events: none; }
.kt-arena > img { position: relative; width: 128px; height: 128px; filter: drop-shadow(0 10px 14px rgba(0, 0, 0, .4)); }
.kt-arena strong { position: relative; font: italic 800 32px/1.1 var(--kt-title); -webkit-text-stroke: 6px var(--e-3); paint-order: stroke fill; text-shadow: 0 4px 0 var(--e-3); }
.kt-arena small { position: relative; font-size: 14px; opacity: .92; }
.kt-arena .kt-bar { position: relative; width: 100%; }
.kt-arena__ready { position: relative; width: 100%; display: flex; justify-content: space-between; font: 600 14px/1 var(--kt-ui); margin-top: 6px; }
.kt-arena .kt-tag { position: absolute; top: 14px; right: 14px; }
.kt-arena .kt-btn { position: relative; margin-top: auto; width: 100%; }
.kt-arena .kt-bar { margin-bottom: 14px; }

/* exam focus mode: one question is the only focal point */
.kt-focus { min-height: 100vh; min-height: 100dvh; display: grid; grid-template-rows: auto 1fr auto; }
.kt-focus__bar { display: flex; align-items: center; gap: 12px; padding: 10px max(var(--kt-gutter), env(safe-area-inset-left, 0px)); color: #FFFFFF; background: linear-gradient(180deg, rgba(10, 36, 99, .95), rgba(19, 70, 170, .92)); box-shadow: inset 0 -2px 0 rgba(255, 210, 63, .9); }
.kt-focus__name { font-size: 13px; line-height: 1.3; opacity: .9; }
.kt-focus__name b { display: block; font: italic 800 17px/1.2 var(--kt-title); }
.kt-focus__prog > span:first-child { white-space: nowrap; }
.kt-focus__prog { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 5px; align-items: center; font: 600 13px/1 var(--kt-ui); }
.kt-focus__prog .kt-bar { width: 100%; max-width: 380px; height: 12px; }
.kt-timer { display: inline-flex; align-items: center; gap: 6px; height: 40px; padding: 0 14px; border-radius: 999px; font: italic 800 18px/1 var(--kt-title); font-variant-numeric: tabular-nums; color: var(--kt-gold-ink); background: linear-gradient(180deg, var(--kt-gold-1), var(--kt-gold-2) 55%, var(--kt-gold-3)); box-shadow: inset 0 1px 0 #FFFFFF, 0 3px 0 var(--kt-gold-edge); }
.kt-timer svg { width: 18px; height: 18px; }
.kt-focus__main { width: 100%; max-width: 800px; margin: 0 auto; padding: 26px var(--kt-gutter); display: flex; flex-direction: column; gap: 22px; }
.kt-question { padding: 24px; }
.kt-question small { font: 600 14px/1 var(--kt-ui); color: var(--kt-ink-3); }
.kt-question h1 { margin-top: 8px; font: italic 800 clamp(24px, 4.4vw, 34px)/1.35 var(--kt-title); color: var(--kt-ink); }
.kt-choices { display: grid; gap: 14px; }
@media (min-width: 768px) { .kt-choices { grid-template-columns: 1fr 1fr; } }
.kt-choice { position: relative; display: flex; align-items: center; gap: 14px; min-height: 72px; padding: 12px 16px; border: 0; border-radius: 18px; background: linear-gradient(180deg, #FFFFFF, #EAF4FF); box-shadow: inset 0 0 0 2px #FFFFFF, 0 0 0 2px #9CCBFF, 0 5px 0 2px #6FA6E8, 0 12px 18px -10px rgba(4, 20, 60, .45); font: 500 18px/1.35 var(--kt-body); color: var(--kt-ink); text-align: left; width: 100%; cursor: pointer; transition: transform .08s; }
.kt-choice:active { transform: translateY(3px); }
.kt-choice b { width: 44px; height: 44px; flex: none; display: grid; place-items: center; border-radius: 12px; font: italic 800 22px/1 var(--kt-title); color: #FFFFFF; text-shadow: 0 2px 0 rgba(0, 0, 0, .25); box-shadow: inset 0 2px 0 rgba(255, 255, 255, .5), 0 3px 0 rgba(0, 0, 0, .25); }
.kt-choice:nth-child(1) b { background: linear-gradient(180deg, #6FC2FF, #1663DA); }
.kt-choice:nth-child(2) b { background: linear-gradient(180deg, #7BE38F, #22A845); }
.kt-choice:nth-child(3) b { background: linear-gradient(180deg, #FFB054, #F2620F); }
.kt-choice:nth-child(4) b { background: linear-gradient(180deg, #C7A6FF, #7B4BE0); }
.kt-choice[aria-checked="true"] { background: linear-gradient(180deg, #FFFBEA, #FFF1B8); box-shadow: inset 0 0 0 2px #FFFFFF, 0 0 0 3px var(--kt-gold-2), 0 5px 0 3px var(--kt-gold-edge), 0 0 26px rgba(255, 196, 0, .55); }
.kt-focus__foot { display: flex; gap: 12px; padding: 12px max(var(--kt-gutter), env(safe-area-inset-left, 0px)) calc(14px + env(safe-area-inset-bottom, 0px)); background: linear-gradient(180deg, rgba(19, 70, 170, .92), rgba(7, 26, 74, .96)); box-shadow: inset 0 2px 0 rgba(255, 210, 63, .9); }
.kt-focus__foot .kt-btn { flex: 1; }
@media (min-width: 768px) { .kt-focus__foot { justify-content: space-between; } .kt-focus__foot .kt-btn { flex: 0 0 auto; } }

/* ---------- play: featured game + game tiles ---------- */
.kt-feature { position: relative; overflow: hidden; display: block; min-height: 340px; border-radius: 26px; color: #FFFFFF; text-decoration: none; box-shadow: 0 0 0 3px var(--kt-gold-2), 0 0 0 5px var(--kt-gold-edge), 0 7px 0 5px #07163F, 0 26px 40px -14px rgba(4, 20, 60, .6); }
.kt-feature > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.kt-feature:hover > img { transform: scale(1.04); }
.kt-feature::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(7, 26, 74, .92) 0%, rgba(7, 26, 74, .55) 38%, rgba(7, 26, 74, 0) 65%); }
.kt-feature__copy { position: absolute; z-index: 1; left: 0; right: 0; bottom: 0; padding: 22px; display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.kt-feature__copy .kt-title { font-size: clamp(30px, 5vw, 50px); }
@media (min-width: 768px) { .kt-feature { min-height: 420px; } .kt-feature::after { background: linear-gradient(90deg, rgba(7, 26, 74, .9) 0%, rgba(7, 26, 74, .55) 36%, rgba(7, 26, 74, 0) 62%); } .kt-feature__copy { top: 0; right: auto; width: min(520px, 60%); justify-content: center; padding: 36px 40px; } }
.kt-games { --kt-min: 180px; }
.kt-game { position: relative; display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 16px 14px 18px; border-radius: 20px; text-align: center; text-decoration: none; color: var(--kt-ink); background: linear-gradient(180deg, #FFFFFF, #EEF7FF); box-shadow: var(--kt-frame); transition: transform .15s; }
.kt-game:hover { transform: translateY(-3px); }
.kt-game > img { width: 92px; height: 92px; filter: drop-shadow(0 6px 8px rgba(0, 0, 0, .25)); }
.kt-game strong { font: 600 18px/1.25 var(--kt-ui); }
.kt-game small { font: 600 13px/1.3 var(--kt-ui); color: var(--kt-ink-3); }
.kt-game .kt-tag { position: absolute; top: 10px; right: 10px; }
.kt-game.is-locked img { filter: grayscale(.85) brightness(1.05) drop-shadow(0 6px 8px rgba(0, 0, 0, .2)); }

/* ---------- me: showcase ---------- */
.kt-me-hero { display: grid; gap: 22px; align-items: stretch; margin-top: 22px; }
@media (min-width: 768px) { .kt-me-hero { grid-template-columns: minmax(0, 360px) minmax(0, 1fr); } }
.kt-showcase { position: relative; overflow: hidden; display: flex; flex-direction: column; align-items: center; padding: 18px 18px 22px; }
.kt-showcase .kt-pedestal { height: 360px; }
.kt-showcase .kt-pedestal > img { height: 350px; }
@media (max-width: 1023px) { .kt-showcase .kt-pedestal { width: 100%; height: 320px; } .kt-showcase .kt-pedestal > img { height: 310px; } .kt-showcase .kt-pedestal::before { width: 200px; height: 50px; } .kt-showcase .kt-pedestal::after { width: 230px; height: 60px; } }
.kt-namebar { margin-top: 12px; }
.kt-me-info { display: flex; flex-direction: column; gap: 16px; padding: 22px; }
.kt-res-grid { --kt-min: 140px; gap: 12px; }
.kt-res-tile { display: flex; align-items: center; gap: 10px; min-height: 72px; padding: 10px 14px 10px 8px; border-radius: 16px; background: #FFFFFF; box-shadow: inset 0 0 0 2px #D6E9FF, 0 4px 0 #C2DCFA; }
.kt-res-tile img { width: 50px; height: 50px; }
.kt-res-tile b { display: block; font: italic 800 24px/1.1 var(--kt-title); color: var(--kt-ink); font-variant-numeric: tabular-nums; }
.kt-res-tile span { font: 600 13px/1.2 var(--kt-ui); color: var(--kt-ink-3); }
.kt-badges { display: flex; flex-wrap: wrap; gap: 10px; }
.kt-badges img { width: 64px; height: 64px; filter: drop-shadow(0 4px 5px rgba(0, 0, 0, .25)); }
.kt-badges img.off { filter: grayscale(1) opacity(.45); }

/* ---------- login: choose player ---------- */
.kt-login { max-width: 560px; margin: 28px auto 0; padding: 26px 22px; display: flex; flex-direction: column; align-items: center; gap: 18px; text-align: center; }
.kt-players { display: grid; grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)); gap: 12px; width: 100%; }
@media (max-width: 767px) { .kt-player .kt-me__face, .kt-player--add span { width: 64px; height: 64px; } .kt-player strong { font-size: 17px; } }
.kt-player { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 16px 10px 14px; border-radius: 20px; text-decoration: none; color: var(--kt-ink); background: linear-gradient(180deg, #FFFFFF, #EAF4FF); box-shadow: inset 0 0 0 2px #FFFFFF, 0 0 0 2px #9CCBFF, 0 5px 0 2px #6FA6E8; transition: transform .15s; }
.kt-player:hover { transform: translateY(-3px); }
.kt-player .kt-me__face { width: 76px; height: 76px; box-shadow: 0 0 0 3px var(--kt-gold-2), 0 0 0 5px var(--kt-gold-edge), 0 8px 12px rgba(0, 0, 0, .25); }
.kt-player strong { font: italic 800 20px/1.1 var(--kt-title); }
.kt-player small { font: 600 13px/1 var(--kt-ui); color: var(--kt-ink-3); }
.kt-player--add { box-shadow: inset 0 0 0 2px #9CCBFF; background: rgba(255, 255, 255, .55); border: 2px dashed #6FA6E8; }
.kt-player--add span { width: 76px; height: 76px; display: grid; place-items: center; border-radius: 50%; background: #FFFFFF; color: var(--kt-royal); }
.kt-player--add svg { width: 34px; height: 34px; }
.kt-login .kt-btn { width: 100%; }

/* ---------- footer ---------- */
.kt-footer { margin-top: 56px; padding-top: 18px; padding-bottom: 28px; }
.kt-footer__in { padding: 12px 14px; border-radius: 18px; background: rgba(10, 36, 99, .78); box-shadow: inset 0 0 0 1.5px rgba(255, 210, 63, .5); }
.kt-footer nav { display: flex; flex-wrap: wrap; gap: 0 2px; }
.kt-footer nav a { display: inline-flex; align-items: center; min-height: var(--kt-tap); padding: 0 12px; font: 600 15px/1 var(--kt-ui); color: #D7E8FF; text-decoration: none; border-radius: 10px; }
.kt-footer nav a:hover { color: #FFFFFF; background: rgba(255, 255, 255, .1); }

/* count badge (new teacher plans on วันนี้) */
.kt-badge { display: inline-grid; place-items: center; min-width: 20px; height: 20px; padding: 0 6px; margin-left: 4px; border-radius: 10px; background: linear-gradient(180deg, #FF7D9C, #E0245E); color: #FFFFFF; font: 600 12px/1 var(--kt-ui); box-shadow: 0 0 0 2px #FFFFFF; }
.kt-tabbar .kt-badge { position: absolute; top: 2px; left: calc(50% + 8px); margin: 0; }
.kt-focus-back { padding: 0 14px 0 8px; }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }

/* progress tracks on light surfaces; the navy track stays for navy panels, HUD and arenas */
.kt-panel:not(.kt-panel--navy) .kt-bar, .kt-subject-card .kt-bar, .kt-subject .kt-bar, .kt-quest .kt-bar, .kt-chest .kt-bar { background: #D3E6FB; box-shadow: inset 0 2px 3px rgba(10, 36, 99, .22), 0 0 0 2px #FFFFFF; }