/* ===== base reset ===== */
:root{color-scheme:light;box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}html{scroll-padding-top:env(safe-area-inset-top,0px)}body{margin:0;padding:0;font:14px -apple-system,BlinkMacSystemFont,sans-serif;background:#fff;color:#000}img{max-width:100%}[hidden]:not([hidden=until-found i]){display:none!important}
/* Layout: iOS-style inset grouped cards; gradient widget tiles on Home (sea-chart navy, coral streak, treasure gold); floating glass tab bar with kanji glyphs; CBT exam keeps a solid sea-navy header. Book magenta is the interactive tint. */
:root,:root[data-mode="light"]{
  --bg:#EDF1F6; --bg-2:#E2E8F0; --card:#FFFFFF; --card-2:#F4F6FA;
  --ink:#0D1A2B; --ink-2:#5A6879; --ink-3:#8D98A8; --rule:rgba(30,50,80,.13); --rule-strong:#B6C1D1;
  --accent:#2B3358; --accent-2:#A93A6E; --accent-soft:rgba(169,58,110,.12); --on-accent:#FFFFFF;
  --ng:#E5484D; --ng-soft:rgba(229,72,77,.12); --ok:#1F9D63; --ok-soft:rgba(31,157,99,.13); --warn:#D98E04; --flag:#F59E0B;
  --gold:#B8862E; --gold-soft:rgba(217,154,30,.15);
  --glass:rgba(255,255,255,.72); --glass-line:rgba(255,255,255,.7);
  --shadow:0 1px 2px rgba(16,36,70,.05),0 6px 20px rgba(16,36,70,.06);
  --cbt:#262E55; --on-cbt:#FFFFFF;
  --g-blue:linear-gradient(145deg,#5AA0FF,#1E5FD8); --g-green:linear-gradient(145deg,#4CD493,#14936A);
  --g-indigo:linear-gradient(145deg,#8C83FF,#4B3FC2); --g-coral:linear-gradient(145deg,#FF8E7A,#E2475A);
  --g-navy:linear-gradient(150deg,#46518C,#2B3358 55%,#1A1F3D); --g-gold:linear-gradient(145deg,#F8CF63,#D58D14);
  --paper:#EEDDB4; --paper-2:#E1C78C; --paper-ink:#3B2A12; --paper-line:#9A7A3E;
  --font-display:"Zen Old Mincho","Hiragino Mincho ProN","Yu Mincho",serif;
  --font-body:-apple-system,BlinkMacSystemFont,"SF Pro Text","Be Vietnam Pro","Hiragino Sans","Zen Kaku Gothic New","Noto Sans JP",system-ui,sans-serif;
  --font-jp:"Hiragino Sans","Zen Kaku Gothic New","Noto Sans JP",-apple-system,system-ui,sans-serif;
  --font-num:ui-monospace,"SF Mono","IBM Plex Mono",Menlo,monospace;
  --font-poster:"Dela Gothic One","Zen Kaku Gothic New",sans-serif;
  --r:18px; --r-sm:12px;
  --ease:cubic-bezier(.2,.8,.2,1);
  --bg-glow:none;
}
@media (prefers-color-scheme: dark){:root:not([data-mode]):not([data-theme="light"]){
  --bg:#0A0D1C; --bg-2:#151A33; --card:#141932; --card-2:#1C2241;
  --ink:#ECEEF8; --ink-2:#A5ABCB; --ink-3:#6E7597; --rule:rgba(196,204,255,.09); --rule-strong:#343B63;
  --accent:#9AA6EC; --accent-2:#EC7DB2; --accent-soft:rgba(236,125,178,.15); --on-accent:#0A0D1C;
  --ng:#FF7A86; --ng-soft:rgba(255,122,134,.14); --ok:#4FD99A; --ok-soft:rgba(79,217,154,.13); --warn:#F5B85A; --flag:#F5B85A;
  --gold:#EFC77A; --gold-soft:rgba(239,199,122,.14);
  --glass:rgba(22,27,54,.74); --glass-line:rgba(196,204,255,.12);
  --shadow:0 0 0 1px rgba(196,204,255,.07),0 10px 28px rgba(0,0,0,.38);
  --cbt:#1B2147; --on-cbt:#ECEEF8;
  --g-blue:linear-gradient(145deg,#4B7FD6,#2B4FA8); --g-green:linear-gradient(145deg,#2FA978,#156B55);
  --g-indigo:linear-gradient(145deg,#6E66D8,#3C3295); --g-coral:linear-gradient(145deg,#D9675C,#A3304A);
  --g-navy:linear-gradient(150deg,#4A5698,#2B3358 55%,#181D3A); --g-gold:linear-gradient(145deg,#D9AE52,#A8701A);
  --bg-glow:radial-gradient(120% 60% at 50% -10%,rgba(120,110,220,.22),transparent 60%),radial-gradient(80% 40% at 100% 0%,rgba(236,125,178,.10),transparent 60%);
  color-scheme:dark}}
:root[data-mode="dark"]{
  --bg:#0A0D1C; --bg-2:#151A33; --card:#141932; --card-2:#1C2241;
  --ink:#ECEEF8; --ink-2:#A5ABCB; --ink-3:#6E7597; --rule:rgba(196,204,255,.09); --rule-strong:#343B63;
  --accent:#9AA6EC; --accent-2:#EC7DB2; --accent-soft:rgba(236,125,178,.15); --on-accent:#0A0D1C;
  --ng:#FF7A86; --ng-soft:rgba(255,122,134,.14); --ok:#4FD99A; --ok-soft:rgba(79,217,154,.13); --warn:#F5B85A; --flag:#F5B85A;
  --gold:#EFC77A; --gold-soft:rgba(239,199,122,.14);
  --glass:rgba(22,27,54,.74); --glass-line:rgba(196,204,255,.12);
  --shadow:0 0 0 1px rgba(196,204,255,.07),0 10px 28px rgba(0,0,0,.38);
  --cbt:#1B2147; --on-cbt:#ECEEF8;
  --g-blue:linear-gradient(145deg,#4B7FD6,#2B4FA8); --g-green:linear-gradient(145deg,#2FA978,#156B55);
  --g-indigo:linear-gradient(145deg,#6E66D8,#3C3295); --g-coral:linear-gradient(145deg,#D9675C,#A3304A);
  --g-navy:linear-gradient(150deg,#4A5698,#2B3358 55%,#181D3A); --g-gold:linear-gradient(145deg,#D9AE52,#A8701A);
  --bg-glow:radial-gradient(120% 60% at 50% -10%,rgba(120,110,220,.22),transparent 60%),radial-gradient(80% 40% at 100% 0%,rgba(236,125,178,.10),transparent 60%);
  color-scheme:dark}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{background-color:var(--bg)}
body{background-image:var(--bg-glow);background-repeat:no-repeat;background-size:100% 520px}
body{color:var(--ink);font-family:var(--font-body);font-size:16px;line-height:1.55;-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;letter-spacing:-.005em}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:30;background:var(--bg)}
body.exam::before{background:var(--cbt)}
.jp{font-family:var(--font-jp)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:.92em}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:2px}
main{max-width:760px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:12px calc(112px + env(safe-area-inset-bottom,0px))}
body.exam main{max-width:980px;padding-top:calc(118px + env(safe-area-inset-top,0px));padding-bottom:calc(40px + env(safe-area-inset-bottom,0px))}
main.enter{animation:enter .32s var(--ease)}
@keyframes enter{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
h1,h2,h3{font-weight:700;text-wrap:balance;margin:0;line-height:1.25;letter-spacing:-.02em}
h1{font-size:1.9rem} h2{font-size:1.2rem} h3{font-size:1.02rem}
p{margin:0}
.stack{display:flex;flex-direction:column;gap:14px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.muted{color:var(--ink-2)} .small{font-size:.86rem}
.eyebrow{font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);font-weight:600}
/* header: brand line + iOS large title */
.top{display:flex;flex-direction:column;gap:2px;margin:6px 2px 18px}
.top .r{display:flex;justify-content:space-between;align-items:center;gap:10px}
.top .brand{font-family:var(--font-display);font-size:.95rem;font-weight:700;color:var(--ink-2)}
.top .brand span{color:var(--accent)}
.top h1{font-size:2.05rem;margin-top:2px}
.top .sub{font-size:.88rem;color:var(--ink-2)}
.themebtn{display:inline-flex;align-items:center;gap:6px;border:none;background:var(--card);box-shadow:var(--shadow);border-radius:999px;padding:6px 12px;font-size:.78rem;font-weight:600;min-height:34px;color:var(--ink);transition:transform .15s var(--ease)}
.themebtn i{font-style:normal;font-size:1rem;line-height:1}
.sheet,.plain{background:var(--card);border-radius:var(--r);padding:18px;box-shadow:var(--shadow)}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:46px;padding:10px 18px;border-radius:999px;border:none;background:var(--accent-soft);color:var(--accent-2);font-weight:600;text-decoration:none;transition:transform .15s var(--ease),filter .15s,opacity .15s}
.btn.primary{background:var(--accent-2);color:#fff}
.btn.ghost{background:var(--bg-2);color:var(--ink-2)}
.btn.danger{background:var(--ng-soft);color:var(--ng)}
.btn.block{width:100%}
.btn:active,.themebtn:active,.tile:active,.lrow:active,.opt:active{transform:scale(.97)}
.btn:disabled{opacity:.4;cursor:default;transform:none}
/* floating glass tab bar */
nav.tabs{position:fixed;left:0;right:0;bottom:0;z-index:20;padding:0 max(12px,env(safe-area-inset-right,0px)) calc(10px + env(safe-area-inset-bottom,0px)) max(12px,env(safe-area-inset-left,0px));display:flex;justify-content:center;pointer-events:none}
body.exam nav.tabs{display:none}
nav.tabs .in{pointer-events:auto;display:flex;gap:2px;width:100%;max-width:520px;padding:6px;border-radius:30px;background:var(--glass);backdrop-filter:blur(22px) saturate(1.6);-webkit-backdrop-filter:blur(22px) saturate(1.6);border:1px solid var(--glass-line);box-shadow:0 10px 30px rgba(10,25,50,.18)}
nav.tabs a{flex:1;display:flex;flex-direction:column;align-items:center;gap:1px;padding:7px 2px 6px;text-decoration:none;color:var(--ink-2);font-size:.68rem;font-weight:600;border-radius:24px;text-align:center;line-height:1.2;transition:background .2s var(--ease),color .2s}
nav.tabs a .k{font-family:var(--font-display);font-size:1.18rem;line-height:1.1}
nav.tabs a[aria-current="page"]{color:var(--accent-2);background:var(--accent-soft)}
/* home widgets */
.widgets{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:26px}
.tile{position:relative;display:flex;flex-direction:column;justify-content:space-between;gap:10px;min-height:104px;padding:14px;border-radius:20px;color:#fff;text-decoration:none;border:none;text-align:left;overflow:hidden;transition:transform .18s var(--ease);box-shadow:0 6px 18px rgba(16,36,70,.12)}
.tile.wide{grid-column:1/-1;min-height:150px;flex-direction:row;align-items:center}
.tile .ic{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.22);font-family:var(--font-display);font-weight:700;font-size:.95rem}
.tile .big{font-size:1.9rem;font-weight:700;line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.tile .lb{font-size:.86rem;font-weight:600;opacity:.95}
.tile .sm{font-size:.76rem;opacity:.85}
.tile.blue{background:var(--g-blue)} .tile.green{background:var(--g-green)} .tile.indigo{background:var(--g-indigo)} .tile.coral{background:var(--g-coral)} .tile.navy{background:var(--g-navy)} .tile.gold{background:var(--g-gold)}
.tile.navy::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(to bottom,transparent 0 27px,rgba(255,255,255,.07) 27px 28px);pointer-events:none}
.tile .tx{flex:1;min-width:0;display:flex;flex-direction:column;gap:6px;position:relative;z-index:1}
.tile .tx h2{font-size:1.25rem;color:#fff}
.tile .go{align-self:flex-start;background:rgba(255,255,255,.95);color:#2B3358;border-radius:999px;padding:7px 14px;font-size:.84rem;font-weight:700}
.ring{position:relative;width:92px;height:92px;flex:none;z-index:1}
.ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.ring .v{position:absolute;inset:0;display:grid;place-items:center;text-align:center;line-height:1.1}
.ring .v b{display:block;font-size:1.35rem;font-variant-numeric:tabular-nums}
.ring .v span{font-size:.68rem;opacity:.85}
/* inset grouped lists */
.ghead{display:flex;justify-content:space-between;align-items:baseline;margin:0 4px 8px}
.ghead h2{font-size:1.15rem}
.ghead small{font-size:.8rem;color:var(--ink-2);font-weight:500}
.group{background:var(--card);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;margin-bottom:24px}
.chap{display:block}
.lrow{display:flex;gap:12px;align-items:center;padding:11px 14px;text-decoration:none;color:inherit;min-height:60px;position:relative;transition:background .15s,transform .15s var(--ease)}
.lrow + .lrow::before{content:"";position:absolute;top:0;right:0;left:60px;border-top:1px solid var(--rule)}
.lrow:hover{background:var(--card-2)}
.lrow .n{width:34px;height:34px;flex:none;border-radius:10px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-2);font-family:var(--font-num);font-size:.82rem;font-weight:600}
.lrow.done .n{background:var(--ok-soft);color:var(--ok)}
.lrow.locked{opacity:.55}.lrow .lock{font-size:15px}
.badge.sc.pass{background:var(--ok-soft);color:var(--ok)}.badge.sc.fail{background:var(--ng-soft);color:var(--ng)}
.lrow .t{flex:1;min-width:0}
.lrow .t b{display:block;font-weight:600;line-height:1.3}
.lrow .t span{font-family:var(--font-jp);font-size:.82rem;color:var(--ink-2)}
.chev{color:var(--ink-3);font-size:1.3rem;line-height:1;flex:none}
.tag{font-size:.66rem;font-weight:700;color:var(--accent-2);background:var(--accent-soft);border-radius:6px;padding:1px 6px;margin-left:6px;vertical-align:middle}
.chip{display:inline-block;font-size:.72rem;font-weight:700;padding:3px 9px;border-radius:999px;white-space:nowrap;background:color-mix(in srgb,currentColor 13%,transparent)}
.chip.A{color:var(--c-A)}.chip.L{color:var(--c-L)}.chip.E{color:var(--c-E)}.chip.X{color:var(--c-X)}.chip.R{color:var(--c-R)}.chip.V{color:var(--c-V)}.chip.T{color:var(--c-T)}
/* seals */
.hanko{display:inline-grid;place-items:center;width:28px;height:28px;border:2px solid var(--accent-2);border-radius:50%;color:var(--accent-2);font-family:var(--font-display);font-weight:700;font-size:.8rem;transform:rotate(-8deg);flex:none}
.hanko.big{width:64px;height:64px;font-size:1.6rem;border-width:3px}
.hanko.ok{border-color:var(--ok);color:var(--ok)} .hanko.ng{border-color:var(--ng);color:var(--ng)}
.dot{width:10px;height:10px;border-radius:50%;background:var(--rule-strong);flex:none}
/* lesson */
.lhead{display:flex;flex-direction:column;gap:6px;margin:4px 2px}
.lhead .jp{font-family:var(--font-display);font-size:1.05rem;color:var(--accent-2)}
section.step{display:flex;flex-direction:column;gap:10px;background:var(--card);border-radius:var(--r);padding:18px;box-shadow:var(--shadow)}
section.step > h3{display:flex;gap:10px;align-items:center}
section.step > h3 i{font-style:normal;font-family:var(--font-num);font-size:.78rem;color:#fff;background:var(--accent-2);border-radius:8px;width:24px;height:24px;display:grid;place-items:center}
ul.pts{margin:0;padding-left:1.15em;display:flex;flex-direction:column;gap:7px}
.tip{padding:10px 14px;background:var(--accent-soft);border-radius:var(--r-sm)}
.trap{padding:10px 14px;background:color-mix(in srgb,var(--warn) 13%,transparent);border-radius:var(--r-sm)}
.tw{overflow-x:auto;border-radius:var(--r-sm);-webkit-overflow-scrolling:touch}
table.acc{border-collapse:collapse;width:100%;font-size:.9rem;min-width:420px}
table.acc th,table.acc td{padding:9px 10px;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}
table.acc th{font-size:.72rem;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-2);background:var(--card-2)}
table.acc td.name{font-family:var(--font-jp);font-weight:700;white-space:nowrap}
table.acc td.name small{display:block;font-weight:400;color:var(--ink-2);font-size:.78rem}
.ex{display:flex;flex-direction:column;gap:10px;padding:14px;background:var(--card-2);border-radius:var(--r-sm)}
/* practice */
.qgrid{display:flex;gap:6px;overflow-x:auto;padding:2px 2px 6px;scrollbar-width:none}
.qgrid::-webkit-scrollbar{display:none}
.qgrid button{flex:none;width:34px;height:34px;border-radius:10px;border:none;background:var(--card);box-shadow:var(--shadow);font-family:var(--font-num);font-size:.74rem;position:relative;color:var(--ink-2);transition:transform .15s var(--ease)}
.qgrid button.ok{background:var(--ok-soft);color:var(--ok)}
.qgrid button.ng{background:var(--ng-soft);color:var(--ng)}
.qgrid button.cur{background:var(--accent-2);color:#fff}
.qgrid button.done{background:var(--accent-soft);color:var(--accent-2)}
.qgrid button.fl::after{content:"";position:absolute;top:-3px;right:-3px;width:10px;height:10px;border-radius:50%;background:var(--flag);border:2px solid var(--bg)}
.qtext{font-family:var(--font-jp);font-size:1.02rem;line-height:1.8}
.qtext b{font-family:var(--font-num);color:var(--accent-2);font-weight:600}
.opts{display:flex;flex-direction:column;gap:9px}
.opt{display:flex;gap:12px;text-align:left;align-items:flex-start;padding:14px;border:1.5px solid transparent;border-radius:16px;background:var(--card);box-shadow:var(--shadow);font-family:var(--font-jp);font-size:.95rem;line-height:1.5;min-height:52px;transition:transform .15s var(--ease),background .15s,border-color .15s}
.opt .l{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;flex:none;background:var(--bg-2);font-family:var(--font-num);font-size:.75rem;color:var(--ink-2)}
.opt.sel{border-color:var(--accent-2);background:var(--accent-soft)}
.opt.sel .l{background:var(--accent-2);color:#fff}
.opt.right{border-color:var(--ok);background:var(--ok-soft)}
.opt.wrong{border-color:var(--ng);background:var(--ng-soft)}
.fb{display:flex;flex-direction:column;gap:10px;padding:16px;border-radius:var(--r);background:var(--ok-soft);animation:enter .3s var(--ease)}
.fb.ng{background:var(--ng-soft)}
.missw{color:var(--ng);font-weight:700}
.reqbox{display:flex;flex-direction:column;gap:5px;padding:12px 14px;border-radius:var(--r-sm);background:color-mix(in srgb,var(--warn) 13%,transparent)}
.gqq{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.opt.sel{border-color:var(--accent);background:var(--accent-soft)}
.nsub{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.pill2{font-size:12px;padding:2px 9px;border-radius:99px;background:var(--accent-soft);color:var(--accent-2);font-weight:700}
.passage{padding:12px 14px;border-radius:var(--r-sm);background:var(--card-2);line-height:1.9;margin-bottom:10px;font-size:15px}
.nq{line-height:1.9}.nq .ul,.passage .ul{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}
.sl{display:inline-block;min-width:44px;border-bottom:2px solid var(--ink-3);margin:0 3px;height:1.1em;vertical-align:-2px;text-align:center;font-size:13px}
.sl.star{color:var(--accent-2);border-color:var(--accent-2)}
.fb .head{display:flex;gap:12px;align-items:center;font-weight:700}
.navq{display:flex;gap:8px;justify-content:space-between}
.bar{height:8px;border-radius:999px;background:var(--bg-2);overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:var(--ok);transition:width .6s var(--ease)}
.bar.mid i{background:var(--warn)} .bar.low i{background:var(--ng)}
.stat{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.stat div{padding:14px 12px;border-radius:16px;background:var(--card);box-shadow:var(--shadow)}
.stat b{display:block;font-size:1.5rem;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat span{font-size:.75rem;color:var(--ink-2)}
.setrow{display:flex;flex-direction:column;gap:8px;padding:14px 16px;position:relative}
.setrow + .setrow::before{content:"";position:absolute;top:0;left:16px;right:0;border-top:1px solid var(--rule)}
.setrow .top2{display:flex;justify-content:space-between;gap:10px;align-items:baseline}
/* flashcards */
.card{min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;padding:26px 18px;background:var(--card);border-radius:24px;box-shadow:var(--shadow)}
.card.shown{animation:enter .3s var(--ease)}
.card .w{font-family:var(--font-display);font-size:2.1rem;line-height:1.25;overflow-wrap:anywhere}
.elgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.elgrid button{min-height:58px;border-radius:16px;border:1.5px solid transparent;background:var(--card);box-shadow:var(--shadow);font-weight:600;font-size:.86rem;line-height:1.25;padding:6px;transition:transform .15s var(--ease)}
.elgrid button:active{transform:scale(.96)}
.elgrid button small{display:block;font-family:var(--font-jp);font-weight:400;color:var(--ink-2)}
.elgrid button.right{border-color:var(--ok);background:var(--ok-soft)} .elgrid button.wrong{border-color:var(--ng);background:var(--ng-soft)}
/* iOS segmented control */
.seg{display:flex;padding:3px;border-radius:12px;background:var(--bg-2);gap:2px}
.seg button{flex:1;border:none;background:transparent;padding:7px 10px;font-weight:600;font-size:.86rem;min-height:36px;color:var(--ink);border-radius:9px;transition:background .2s var(--ease),box-shadow .2s}
.seg button[aria-pressed="true"]{background:var(--card);box-shadow:0 1px 4px rgba(16,36,70,.15)}
.dict{display:flex;flex-direction:column}
.dict .d{display:flex;gap:10px;align-items:center;padding:11px 16px;position:relative}
.dict .d + .d::before{content:"";position:absolute;top:0;left:16px;right:0;border-top:1px solid var(--rule)}
.dict .d .t{flex:1;min-width:0}
.dict .d b{font-family:var(--font-jp)}
.field{background:var(--card);box-shadow:var(--shadow)}
.timer{font-family:var(--font-num);font-size:1.05rem;color:var(--accent-2);font-weight:600}
.note{font-size:.85rem;color:var(--ink-2);display:flex;gap:8px;align-items:center;background:var(--card);border-radius:14px;padding:10px 14px;box-shadow:var(--shadow)}
.syncdot{width:8px;height:8px;border-radius:50%;background:var(--rule-strong);display:inline-block;flex:none}
.syncdot.on{background:var(--ok);box-shadow:0 0 0 4px var(--ok-soft)}
/* ---- CBT exam ---- */
.cbt-bar{position:fixed;left:0;right:0;top:0;z-index:25;background:var(--cbt);color:var(--on-cbt);box-shadow:0 4px 18px rgba(5,20,45,.25);
  padding:calc(8px + env(safe-area-inset-top,0px)) max(12px,env(safe-area-inset-right,0px)) 0 max(12px,env(safe-area-inset-left,0px))}
.cbt-bar .in{max-width:980px;margin:0 auto;display:flex;flex-direction:column;gap:7px}
.cbt-bar .r1{display:flex;align-items:center;gap:8px;justify-content:space-between}
.cbt-bar .ttl{font-weight:700;font-size:.86rem;line-height:1.2}
.cbt-bar .ttl small{display:block;font-weight:400;opacity:.8}
.cbt-bar .clock{font-family:var(--font-num);font-size:1.15rem;font-weight:600;background:rgba(255,255,255,.14);padding:3px 12px;border-radius:999px;white-space:nowrap}
.cbt-bar .clock.low{background:#E5484D;color:#fff}
.cbt-bar .cb{border:none;background:rgba(255,255,255,.16);color:inherit;border-radius:999px;padding:7px 12px;font-size:.8rem;font-weight:600;min-height:36px;white-space:nowrap}
.cbt-bar .cb.end{background:#fff;color:#2B3358}
.cbt-tabs{display:flex;gap:4px}
.cbt-tabs button{flex:1;border:none;border-radius:12px 12px 0 0;background:rgba(255,255,255,.12);color:inherit;padding:8px 4px;font-weight:700;font-size:.85rem;min-height:40px;transition:background .2s}
.cbt-tabs button[aria-pressed="true"]{background:var(--bg);color:var(--ink)}
.cbt-tabs button small{font-weight:500;font-family:var(--font-num);opacity:.75;margin-left:4px}
.qhead{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.qhead b{font-family:var(--font-jp);font-size:1.05rem}
.flagbtn{border:none;background:color-mix(in srgb,var(--flag) 16%,transparent);color:var(--flag);border-radius:999px;padding:6px 14px;font-size:.8rem;font-weight:700;min-height:36px}
.flagbtn[aria-pressed="true"]{background:var(--flag);color:#fff}
.cands{display:flex;flex-wrap:wrap;gap:6px}
.cands span{font-family:var(--font-jp);font-size:.84rem;border-radius:8px;padding:3px 10px;background:var(--card-2)}
/* bottom sheet */
.modal{position:fixed;inset:0;z-index:40;background:rgba(5,12,24,.45);display:flex;align-items:flex-end;justify-content:center;padding:12px max(12px,env(safe-area-inset-right,0px)) calc(12px + env(safe-area-inset-bottom,0px)) max(12px,env(safe-area-inset-left,0px));animation:fade .2s ease}
.modal .box{background:var(--card);color:var(--ink);border-radius:26px;padding:22px;max-width:460px;width:100%;display:flex;flex-direction:column;gap:14px;animation:sheet .32s var(--ease)}
@media (min-width:720px){.modal{align-items:center}}
@keyframes sheet{from{transform:translateY(40px);opacity:0}to{transform:none;opacity:1}}
@keyframes fade{from{opacity:0}to{opacity:1}}
.score-tbl{width:100%;border-collapse:collapse}
.score-tbl td,.score-tbl th{padding:10px 4px;border-bottom:1px solid var(--rule);text-align:left}
.score-tbl td.n{text-align:right;font-family:var(--font-num);font-weight:600}
@media (min-width:720px){.entry.wide{flex-direction:row}.entry.wide .side{flex:1}.widgets{grid-template-columns:repeat(4,1fr)}}
@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}
.pop{animation:pop .3s var(--ease)}
@keyframes pop{from{transform:scale(.6) rotate(-20deg);opacity:0}to{transform:scale(1) rotate(-8deg);opacity:1}}

/* ---- JFT additions ---- */
.lrow{width:100%;border:none;background:transparent;text-align:left}
.lrow .t span.vn{font-family:var(--font-body)}
.badge{font-size:.68rem;font-weight:700;border-radius:999px;padding:3px 8px;white-space:nowrap;flex:none}
.badge.fbk{background:color-mix(in srgb,var(--warn) 16%,transparent);color:var(--warn)}
.badge.sc{background:var(--ok-soft);color:var(--ok);font-family:var(--font-num)}
.kind{align-self:flex-start;font-size:.74rem;font-weight:700;color:var(--accent-2);background:var(--accent-soft);border-radius:999px;padding:4px 11px}
.qbig{font-family:var(--font-jp);font-size:1.15rem;line-height:1.9}
.qbig .gap{display:inline-block;min-width:3em;border-bottom:2px solid var(--accent-2);text-align:center;color:var(--accent-2);font-weight:700}
.vnq{font-weight:600;font-size:1.02rem}
.slot{min-height:62px;border:1.5px dashed var(--rule-strong);border-radius:16px;padding:8px;display:flex;flex-wrap:wrap;gap:6px;align-content:flex-start;background:var(--card-2)}
.slot.right{border-style:solid;border-color:var(--ok);background:var(--ok-soft)}
.slot.wrong{border-style:solid;border-color:var(--ng);background:var(--ng-soft)}
.slot .ph{color:var(--ink-3);font-size:.85rem;align-self:center;padding-left:6px}
.bank{display:flex;flex-wrap:wrap;gap:8px}
.wt{font-family:var(--font-jp);font-size:1.02rem;border:none;background:var(--card);box-shadow:var(--shadow);border-radius:12px;padding:9px 13px;min-height:46px;transition:transform .15s var(--ease)}
.slot .wt{background:var(--card)}
.wt:active{transform:scale(.95)}
.wt.used{visibility:hidden}
textarea.field{width:100%;min-height:118px;font:inherit;font-family:var(--font-jp);font-size:16px;padding:12px 14px;border:1.5px solid transparent;border-radius:var(--r-sm);color:var(--ink);resize:vertical}
textarea.field:focus,input.field:focus{border-color:var(--accent-2);outline:none}
input.field{width:100%;min-height:48px;font:inherit;font-size:16px;padding:10px 14px;border:1.5px solid transparent;border-radius:var(--r-sm);color:var(--ink)}
.model{padding:12px 14px;background:var(--accent-soft);border-radius:var(--r-sm);display:flex;flex-direction:column;gap:4px}
.model .jp{font-size:1rem}
.ans{font-family:var(--font-jp);font-size:1.02rem}
.dprog{display:flex;align-items:center;gap:10px}
.dprog .bar{flex:1}
.iconbtn{width:40px;height:40px;flex:none;border-radius:50%;border:none;background:var(--card);box-shadow:var(--shadow);display:grid;place-items:center;font-size:1.05rem;color:var(--ink-2)}
.tfb{padding:14px 16px;border-radius:var(--r);background:color-mix(in srgb,var(--warn) 13%,transparent);display:flex;flex-direction:column;gap:6px}
.wa{display:flex;flex-direction:column;gap:8px;padding:12px 14px;background:var(--card-2);border-radius:var(--r-sm)}
.wa .a{font-family:var(--font-jp);font-size:1rem;white-space:pre-wrap}
/* exam extras */
.audio{display:flex;align-items:center;gap:14px;padding:14px;border-radius:var(--r);background:var(--accent-soft)}
.play{width:52px;height:52px;flex:none;border-radius:50%;border:none;background:var(--accent-2);color:#fff;display:grid;place-items:center;box-shadow:0 6px 16px rgba(47,123,239,.35)}
.play:disabled{opacity:.4;box-shadow:none}
.passage{font-family:var(--font-jp);font-size:.98rem;line-height:1.8;overflow-x:auto}
.passage .msg,.passage .card2{background:var(--card-2);border-radius:var(--r-sm);padding:12px 14px}
.passage .tb{border-collapse:collapse;min-width:300px;background:var(--card)}
.passage .tb th,.passage .tb td{border:1px solid var(--rule-strong);padding:6px 10px;text-align:left;font-variant-numeric:tabular-nums}
.passage .tb th{background:var(--card-2);font-size:.86rem}
.passage p{margin:6px 0 0;font-size:.88rem}
.qgrid button:disabled{opacity:.45}
.secgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.secgrid>div{padding:14px;border-radius:16px;background:var(--card);box-shadow:var(--shadow);display:flex;flex-direction:column;gap:6px}
.secgrid b{font-family:var(--font-num);font-size:1.25rem}
.scorehero{display:flex;align-items:center;gap:18px}
.scorehero .big{font-size:3rem;font-weight:700;line-height:1;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.scorehero .big small{font-size:1rem;color:var(--ink-2);font-weight:500}
.lvl{display:inline-block;font-weight:700;font-size:.82rem;padding:4px 11px;border-radius:999px}
.lvl.pass{background:var(--ok-soft);color:var(--ok)} .lvl.fail{background:var(--ng-soft);color:var(--ng)}
.rv{display:flex;flex-direction:column;gap:10px}
.rvi{display:flex;flex-direction:column;gap:8px;padding:14px 16px;border-radius:var(--r);background:var(--card);box-shadow:var(--shadow);border-left:4px solid var(--ok)}
.rvi.x{border-left-color:var(--ng)}
.rvi .ok{color:var(--ok);font-weight:600} .rvi .no{color:var(--ng);font-weight:600}
.rvi details summary{font-size:.82rem;color:var(--ink-2);cursor:pointer}
.script{font-family:var(--font-jp);font-size:.88rem;color:var(--ink-2);margin-top:6px}
.seg.wrap{flex-wrap:wrap}
.seg.wrap button{flex:1 1 auto}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(96px + env(safe-area-inset-bottom,0px));background:var(--ink);color:var(--bg);padding:10px 18px;border-radius:999px;font-size:.88rem;z-index:50;box-shadow:var(--shadow)}
.lgrid{display:grid;grid-template-columns:repeat(18,minmax(0,1fr));gap:3px}
.lgrid i{aspect-ratio:1;border-radius:4px;background:var(--bg-2);position:relative}
.lgrid i.ok{background:var(--ok)} .lgrid i.mid{background:var(--warn)} .lgrid i.low{background:var(--ng)}
.lgrid i.p::after{content:"";position:absolute;inset:30%;border-radius:50%;background:#fff}
.stat4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.stat4 div{padding:10px;border-radius:14px;background:var(--card-2)}
.stat4 b{display:block;font-size:1.2rem;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat4 span{font-size:.7rem;color:var(--ink-2);line-height:1.2;display:block}
@media (max-width:420px){.stat4{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* ---- study ---- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}
.steps button{border:none;background:var(--card);box-shadow:var(--shadow);border-radius:12px;padding:8px 4px;font-size:.74rem;font-weight:600;color:var(--ink-2);display:flex;flex-direction:column;align-items:center;gap:3px;min-height:54px}
.steps button i{font-style:normal;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--bg-2);font-family:var(--font-num);font-size:.72rem}
.steps button.ok i{background:var(--ok);color:#fff}
.steps button.on{color:var(--accent-2);box-shadow:inset 0 0 0 1.5px var(--accent-2)}
.steps button.on i{background:var(--accent-2);color:#fff}
.spk{flex:none;width:40px;height:40px;border-radius:50%;border:none;background:var(--accent-soft);font-size:1rem;display:grid;place-items:center;transition:transform .15s var(--ease)}
.spk:active{transform:scale(.92)}
.exj{font-size:1.08rem;line-height:2.1}
rt{font-size:.55em;color:var(--ink-2);font-weight:500}
body.nofuri rt{visibility:hidden}
.kgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.kc{position:relative;display:flex;flex-direction:column;gap:2px;padding:12px 44px 12px 14px;border-radius:14px;background:var(--card-2);min-width:0}
.kc .kw{font-family:var(--font-display);font-size:1.5rem;line-height:1.2;overflow-wrap:anywhere}
.kc .ky{font-size:.86rem;color:var(--accent-2)}
.kc .kv{font-size:.8rem;color:var(--ink-2)}
.kc .spk{position:absolute;top:8px;right:8px;width:32px;height:32px;font-size:.85rem}
.vrow{display:flex;gap:10px;align-items:center;padding:10px 14px;position:relative}
.vrow + .vrow::before{content:"";position:absolute;top:0;left:14px;right:0;border-top:1px solid var(--rule)}
.vrow .t{flex:1;min-width:0;display:flex;flex-wrap:wrap;gap:2px 10px;align-items:baseline}
.vrow .t b{font-size:1.05rem}
.vrow .t span.jp{font-size:.82rem;color:var(--accent-2)}
.vrow .t .vn{flex-basis:100%;font-size:.86rem;color:var(--ink-2)}
.vrow.kn .t b::after{content:" ✓";color:var(--ok);font-size:.8rem}
.deck{position:relative;perspective:1400px;height:clamp(280px,50vh,380px);margin:6px 4px 14px}
.deck::before,.deck::after{content:"";position:absolute;inset:0;border-radius:24px;background:var(--card);border:1px solid var(--rule);box-shadow:var(--shadow)}
.deck::before{transform:translateY(26px) scale(.9);opacity:.5}
.deck::after{transform:translateY(14px) scale(.95);opacity:.8}
.deck.last::before{display:none}.deck.one::before,.deck.one::after{display:none}
.fc3d{position:absolute;inset:0;z-index:2;transform-style:preserve-3d;-webkit-transform-style:preserve-3d;transition:transform .6s cubic-bezier(.3,1.25,.4,1),opacity .3s;cursor:pointer;touch-action:pan-y;user-select:none;-webkit-user-select:none;outline:none}
.fc3d.flipped{transform:rotateY(180deg)}
.fc3d.drag{transition:none}
.fc3d.enter{animation:dealin .35s var(--ease)}
@keyframes dealin{from{transform:translateY(18px) scale(.95);opacity:.4}to{transform:none;opacity:1}}
.fc3d.out-r{transform:translateX(130%) rotate(16deg) rotateY(180deg);opacity:0;transition:transform .35s ease-in,opacity .35s}
.fc3d.out-l{transform:translateX(-130%) rotate(-16deg) rotateY(180deg);opacity:0;transition:transform .35s ease-in,opacity .35s}
.fc3d:focus-visible .face{outline:2px solid var(--accent-2);outline-offset:3px}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:24px;background:var(--card);border:1px solid var(--rule);box-shadow:0 14px 34px rgba(16,36,70,.16);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:28px 22px;text-align:center;overflow:hidden}
.face.front{background:radial-gradient(120% 90% at 50% 0%,var(--accent-soft),transparent 60%),var(--card)}
.face.back{transform:rotateY(180deg);background:repeating-linear-gradient(to bottom,transparent 0 33px,var(--rule) 33px 34px),var(--card);background-position:0 58px}
.face.back::before{content:"";position:absolute;left:0;right:0;top:56px;border-top:2px solid color-mix(in srgb,var(--ng) 45%,transparent)}
.face .corner{position:absolute;top:14px;left:18px;font-family:var(--font-display);font-size:.9rem;color:var(--ink-3)}
.face .no{position:absolute;top:14px;right:18px;font-family:var(--font-num);font-size:.78rem;color:var(--ink-3)}
.face .fw{font-family:var(--font-display);font-size:clamp(2rem,9vw,2.8rem);line-height:1.25;overflow-wrap:anywhere}
.face .hint{position:absolute;bottom:16px;left:0;right:0;font-size:.78rem;color:var(--ink-3)}
.face .fw2{font-family:var(--font-display);font-size:1.6rem;line-height:1.3;overflow-wrap:anywhere;position:relative}
.face .fr{font-family:var(--font-jp);font-size:1.15rem;color:var(--accent-2);position:relative}
.face .fm{font-size:1.25rem;font-weight:700;line-height:1.4;position:relative;background:var(--card);padding:2px 8px;border-radius:8px}
.face .stamp{position:absolute;top:22px;width:62px;height:62px;border-radius:50%;border:3px solid;display:grid;place-items:center;font-family:var(--font-display);font-weight:700;font-size:1.5rem;opacity:0;transform:rotate(-12deg);pointer-events:none}
.face .stamp.ok{right:22px;color:var(--ok);border-color:var(--ok)}
.face .stamp.ng{left:22px;color:var(--ng);border-color:var(--ng);transform:rotate(12deg)}
#fcctl .swipe{font-size:.78rem;color:var(--ink-3);text-align:center}
.week{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px;text-align:center}
.wd{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:.72rem;color:var(--ink-2)}
.wd i{width:100%;max-width:34px;aspect-ratio:1;border-radius:10px;background:var(--bg-2)}
.wd.part i{background:color-mix(in srgb,var(--flag) 45%,transparent)}
.wd.full i{background:var(--flag)}
.wd.full i::after{content:"🔥";display:grid;place-items:center;height:100%;font-size:.9rem}
.tile.streak{cursor:default}
.gbar{height:6px;border-radius:999px;background:rgba(255,255,255,.3);overflow:hidden}
.gbar i{display:block;height:100%;background:#fff;border-radius:999px}
@media (min-width:720px){.kgrid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.tabs .in{position:relative;transition:transform .35s cubic-bezier(.3,1.4,.4,1);touch-action:pan-y}
.tabs .in.press{transform:scale(1.035)}
nav.tabs a{-webkit-user-drag:none;user-select:none;-webkit-user-select:none;position:relative;z-index:1;transition:color .25s,transform .2s var(--ease)}
nav.tabs a[aria-current="page"]{background:transparent}
nav.tabs a.hover{color:var(--accent-2)}
.tabs .pill{position:absolute;left:0;top:6px;bottom:6px;width:60px;border-radius:24px;opacity:0;pointer-events:none;z-index:0;
  background:linear-gradient(180deg,color-mix(in srgb,var(--accent-2) 20%,transparent),color-mix(in srgb,var(--accent-2) 12%,transparent));
  box-shadow:inset 0 0 0 .5px color-mix(in srgb,var(--accent-2) 30%,transparent),inset 0 1px 1px rgba(255,255,255,.55),0 2px 8px rgba(16,36,70,.08);
  transform-origin:center;transition:transform .45s cubic-bezier(.3,1.25,.4,1),width .45s cubic-bezier(.3,1.25,.4,1),opacity .2s,background .2s,box-shadow .2s}
.tabs .pill.moving{transition:none}
.tabs .pill.lens{transition:none;background:rgba(255,255,255,.28);backdrop-filter:blur(1.5px) saturate(1.9) brightness(1.08);-webkit-backdrop-filter:blur(1.5px) saturate(1.9) brightness(1.08);
  box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent-2) 28%,transparent),inset 0 2px 6px rgba(255,255,255,.6),inset 0 -3px 8px rgba(16,36,70,.1),0 8px 22px rgba(16,36,70,.2);scale:1.14}
:root[data-mode="dark"] .tabs .pill.lens{background:rgba(255,255,255,.14);box-shadow:inset 0 0 0 1px rgba(255,255,255,.25),inset 0 2px 6px rgba(255,255,255,.18),0 8px 22px rgba(0,0,0,.45)}

/* ---- smoother tab bar ---- */
.tabs .pill{transform-origin:0 50%;transition:opacity .2s,background .2s,box-shadow .2s,scale .3s cubic-bezier(.3,1.4,.4,1);will-change:transform}
.tabs .pill.lens{transition:background .2s,box-shadow .2s,scale .3s cubic-bezier(.3,1.4,.4,1)}
.tabs .in{will-change:transform;transition:transform .45s cubic-bezier(.25,1.5,.4,1)}
.tabs .in.press{transform:scale(1.03)}
nav.tabs a .k{display:inline-block;will-change:transform}
main.enter-r{animation:enterR .38s cubic-bezier(.2,.8,.2,1)}
main.enter-l{animation:enterL .38s cubic-bezier(.2,.8,.2,1)}
@keyframes enterR{from{opacity:0;transform:translate3d(22px,0,0)}to{opacity:1;transform:none}}
@keyframes enterL{from{opacity:0;transform:translate3d(-22px,0,0)}to{opacity:1;transform:none}}
/* ---- teacher activity ---- */
.langseg{padding:2px;border-radius:999px}
.langseg button{min-height:30px;padding:4px 10px;font-size:.74rem;border-radius:999px;white-space:nowrap;flex:none}
.top .r .brand{min-width:0}
.stucard h2{font-size:1.3rem}
.acttime{white-space:nowrap;text-align:right;font-variant-numeric:tabular-nums}
.status{display:inline-flex;align-items:center;gap:7px;font-size:.84rem;font-weight:600;color:var(--ink-2)}
.status .pulse{width:9px;height:9px;border-radius:50%;background:var(--ink-3);flex:none}
.status.on{color:var(--ok)}
.status.on .pulse{background:var(--ok);box-shadow:0 0 0 0 var(--ok);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--ok) 55%,transparent)}70%{box-shadow:0 0 0 9px transparent}100%{box-shadow:0 0 0 0 transparent}}
.actbox{display:flex;flex-direction:column;gap:14px;padding:14px;border-radius:16px;background:var(--card-2)}
.today3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.today3 div{display:flex;flex-direction:column;gap:2px;padding:10px 12px;border-radius:12px;background:var(--card)}
.today3 b{font-size:1.45rem;line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.today3 b small{font-size:.72rem;font-weight:600;color:var(--ink-2)}
.today3 span{font-size:.72rem;color:var(--ink-2);line-height:1.25}
.chart7{position:relative;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px;padding-top:4px}
.chart7 .trk{height:112px;width:100%;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:2px}
.chart7 .trk i{width:70%}
.chart7 .c{display:flex;flex-direction:column;align-items:center;gap:3px;min-width:0}
.chart7 .c b{font-size:.72rem;font-variant-numeric:tabular-nums;color:var(--ink-2);line-height:14px}
.chart7 .c i{width:70%;max-width:30px;border-radius:7px 7px 3px 3px;background:color-mix(in srgb,var(--accent-2) 45%,transparent);transition:height .6s var(--ease)}
.chart7 .c i.full{background:var(--accent-2)}
.chart7 .c.today span{color:var(--accent-2);font-weight:700}
.chart7 .c span{font-size:.72rem;color:var(--ink-2);line-height:1}
.chart7 .c small{font-size:.66rem;color:var(--ink-3);font-variant-numeric:tabular-nums;line-height:1}
.chart7 .goal{position:absolute;left:0;right:0;border-top:1.5px dashed color-mix(in srgb,var(--flag) 70%,transparent);pointer-events:none}
.chart7 .goal em{position:absolute;left:0;top:-15px;background:var(--card-2);padding-right:4px;font-style:normal;font-size:.62rem;color:var(--flag);font-weight:700}
.log{display:flex;flex-direction:column;gap:2px}
.log .lh{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:4px}
.le{display:grid;grid-template-columns:24px minmax(0,1fr) auto;gap:8px;align-items:center;padding:7px 2px;border-top:1px solid var(--rule);font-size:.86rem}
.le .li{text-align:center}
.le .lt{min-width:0;overflow-wrap:anywhere}
.le time{font-family:var(--font-num);font-size:.76rem;color:var(--ink-2);white-space:nowrap}
.linkbtn{align-self:flex-start;border:none;background:none;color:var(--accent-2);font-weight:600;font-size:.84rem;padding:6px 2px}
.jasum h2{font-size:1.2rem}
table.jt{min-width:760px;font-family:var(--font-jp)}
table.jt th{text-transform:none;letter-spacing:0;font-size:.74rem;white-space:nowrap}
table.jt td{white-space:nowrap;font-size:.86rem}
table.jt td.n{text-align:right;font-variant-numeric:tabular-nums}
.dotg{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--ok);margin-right:5px;vertical-align:1px}
@media (max-width:420px){.today3 b{font-size:1.2rem}}

/* ---- kanji writing ---- */
.wpad{position:relative;width:100%;max-width:340px;aspect-ratio:1;margin:0 auto;border-radius:22px;background:var(--card);box-shadow:var(--shadow);overflow:hidden}
.wpad .wsvg,.wpad canvas{position:absolute;inset:0;width:100%;height:100%}
.wpad canvas{touch-action:none;cursor:crosshair}
.wst{fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-width:4.4}
.wst.ghost{stroke:var(--rule-strong);opacity:.6}
.wst.ink,.wst.done{stroke:var(--ink)}
.wst.hint{stroke:var(--accent-2);opacity:.85}
.wgrid{stroke:var(--rule-strong);stroke-dasharray:2.5 2.5;stroke-width:.5;fill:none;opacity:.8}
.wnum{font-size:7.5px;fill:var(--accent-2);font-family:var(--font-num);font-weight:700;transition:opacity .2s}
.wstart{fill:var(--ok);opacity:.85;transform-box:fill-box;transform-origin:center;animation:wdot 1.2s ease-in-out infinite}
@keyframes wdot{50%{transform:scale(1.5);opacity:.4}}
.wmini{width:86px;height:86px;flex:none;background:var(--card-2);border-radius:14px}
.wmini.big{width:112px;height:112px}
.winfo{display:flex;gap:14px;align-items:center;padding:12px 14px;border-radius:16px;background:var(--card);box-shadow:var(--shadow)}
.winfo > .stack{flex:1}
.wbig{font-family:var(--font-display);font-size:2.6rem;line-height:1;flex:none}
.cands{display:flex;gap:6px;align-items:center;min-height:56px;overflow-x:auto;padding:6px 8px;border-radius:14px;background:var(--card);box-shadow:var(--shadow);scrollbar-width:none}
.cands::-webkit-scrollbar{display:none}
.cand{flex:none;min-width:44px;height:44px;border-radius:10px;border:none;background:var(--card-2);font-size:1.5rem;display:grid;place-items:center;font-family:var(--font-display);color:var(--ink)}
button.cand.on{background:var(--accent-2);color:#fff}
.kres{display:flex;flex-wrap:wrap;gap:8px}
.kres button{width:50px;height:50px;border-radius:12px;border:2px solid;font-size:1.55rem;background:var(--card);font-family:var(--font-display)}
.kres .ok{border-color:var(--ok);color:var(--ok)} .kres .ng{border-color:var(--ng);color:var(--ng)}
.kvgc{font-size:.66rem;color:var(--ink-3);text-align:center;margin:0}
.kwline{display:flex;flex-direction:column;gap:6px;padding:10px 12px;border-radius:12px;background:var(--card-2)}
.kbad{display:inline-flex;align-items:baseline;gap:2px;font-family:var(--font-display);font-size:1.15rem;padding:2px 7px;border-radius:8px;background:var(--ng-soft);color:var(--ng)}
.kbad small{font-family:var(--font-num);font-size:.62rem}
body.writing nav.tabs{display:none}
body.writing main{padding-bottom:calc(32px + env(safe-area-inset-bottom,0px))}
/* ---- N1 additions ---- */
.lrow .t span.vn{font-family:var(--font-body)}
.u{color:var(--accent-2);font-weight:700;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}
.nq .gap,.qbig .gap{display:inline-block;min-width:3.6em;border-bottom:2px solid var(--accent-2);text-align:center;color:var(--accent-2);font-weight:700}
.opt .v{min-width:0;overflow-wrap:anywhere}
.opt.vn{font-family:var(--font-body)}
.qword{font-family:var(--font-display);font-size:2.2rem;line-height:1.25;text-align:center;padding:4px 0;overflow-wrap:anywhere}
.para2{font-size:.86rem;color:var(--ink-2)} .para2 b{font-family:var(--font-jp);color:var(--accent);font-weight:700}
.vrow .t .ex2{flex-basis:100%;font-family:var(--font-jp);font-size:.95rem;line-height:1.7}
.vrow .t .ex2v{flex-basis:100%;font-size:.84rem;color:var(--ink-2)}
.vrow .no2{font-family:var(--font-num);font-size:.72rem;color:var(--ink-3);width:30px;flex:none;text-align:right;align-self:flex-start;padding-top:4px}
.pos{font-size:.66rem;font-weight:700;border-radius:6px;padding:1px 6px;background:var(--bg-2);color:var(--ink-2);font-family:var(--font-jp)}
.exc{display:flex;flex-direction:column;gap:6px;padding:14px;border-radius:var(--r);background:var(--card);box-shadow:var(--shadow)}
.exc .hd{display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
.exc .hd b{font-family:var(--font-jp);font-size:1.15rem}
.exc .hd .no{font-family:var(--font-num);font-size:.74rem;color:var(--accent-2)}
.exc .jp.s{font-size:1.05rem;line-height:1.9}
/* captain card */
.capcard{display:flex;gap:12px;align-items:flex-end;padding:14px 16px 12px;border-radius:var(--r);background:var(--card);box-shadow:var(--shadow);margin-bottom:26px}
.capcard .say{flex:1;min-width:0;position:relative;background:var(--card-2);border-radius:16px 16px 16px 4px;padding:10px 13px;font-size:.92rem}
.capcard .say b{color:var(--accent-2)}
.cap{width:96px;height:116px;display:flex;align-items:flex-end;justify-content:center;flex:none;position:relative}
.cap .kimg{height:100%;width:auto;max-width:none;display:block;transform-origin:50% 100%;user-select:none;-webkit-user-drag:none;filter:drop-shadow(0 3px 4px rgba(20,24,50,.18))}
.cap::after{content:"";position:absolute;bottom:-2px;left:50%;width:56%;height:6px;transform:translateX(-50%);border-radius:50%;background:rgba(0,0,0,.14);z-index:-1}
.cap.sm{width:40px;height:46px}.cap.sm::after{display:none}
.cap.live .kimg{animation:breathe 3.4s ease-in-out infinite}
.cap.cheer .kimg{animation:jump .55s var(--ease) 2}
.cap.sad .kimg{animation:droop .9s ease-out 1 forwards}
.cap.combo .kimg{animation:pop .6s var(--ease) 1}
@keyframes pop{0%{transform:scale(.8) rotate(-6deg)}50%{transform:scale(1.14) rotate(3deg)}100%{transform:scale(1) rotate(0)}}
.cap.party .kimg{animation:jump .5s var(--ease) infinite}
@keyframes breathe{0%,100%{transform:translateY(0) scale(1,1)}50%{transform:translateY(-2px) scale(1.012,.988)}}
@keyframes flip{0%{transform:perspective(300px) rotateY(0) scale(1)}60%{transform:perspective(300px) rotateY(330deg) scale(1.12)}100%{transform:perspective(300px) rotateY(360deg) scale(1)}}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-3px)}}
@keyframes sway{0%,100%{transform:rotate(0)}50%{transform:rotate(8deg)}}
@keyframes jump{0%{transform:translateY(0) scale(1,1)}25%{transform:translateY(2px) scale(1.06,.92)}55%{transform:translateY(-16px) scale(.96,1.05)}100%{transform:translateY(0) scale(1,1)}}
@keyframes waveL{0%,100%{transform:rotate(0)}50%{transform:rotate(-120deg)}}
@keyframes waveR{0%,100%{transform:rotate(0)}50%{transform:rotate(120deg)}}
@keyframes droop{0%{transform:rotate(0)}30%{transform:rotate(-6deg)}60%{transform:rotate(5deg)}100%{transform:rotate(0) translateY(3px)}}
@keyframes spin{0%{transform:rotate(0) scale(1)}60%{transform:rotate(330deg) scale(1.12)}100%{transform:rotate(360deg) scale(1)}}
.burst{position:fixed;pointer-events:none;z-index:80;font-family:var(--font-poster);color:#FFD77A;-webkit-text-stroke:1.5px #082B3A;font-size:1.9rem;animation:burst 1.1s var(--ease) forwards;white-space:nowrap}
@keyframes burst{0%{transform:translate(-50%,-50%) scale(.3) rotate(-8deg);opacity:0}25%{transform:translate(-50%,-50%) scale(1.15) rotate(-4deg);opacity:1}100%{transform:translate(-50%,-110%) scale(1) rotate(-4deg);opacity:0}}
.combo{font-family:var(--font-poster);color:var(--gold);font-size:.85rem;white-space:nowrap}
/* sea chart */
.chart{border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);margin-bottom:8px;background:#3aa6c2}
:root[data-mode="dark"] .chart svg image{filter:brightness(.82) saturate(.95)}
.chart svg{display:block;width:100%;height:auto}
.ship{transition:transform 1.4s var(--ease)}
.ship>g{animation:rock 2.4s ease-in-out infinite;transform-origin:0 6px}
@keyframes rock{0%,100%{transform:rotate(-4deg)}50%{transform:rotate(4deg)}}
/* wanted poster */
.crew{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.mate{background:var(--card-2);border-radius:14px;padding:8px 4px;text-align:center;display:grid;gap:1px;justify-items:center;min-width:0}
.mate svg,.mate .crewimg{width:64px;height:64px;object-fit:contain;display:block}
.mate .crewimg{animation:breathe 3.2s ease-in-out infinite;transform-origin:50% 100%;filter:drop-shadow(0 3px 4px rgba(20,24,50,.18))}
.mate:nth-child(2n) .crewimg{animation-delay:-1.1s}.mate:nth-child(3n) .crewimg{animation-delay:-2s}
.mate.off svg{filter:grayscale(1) brightness(.4);opacity:.45}
.mate.off .crewimg{filter:brightness(0);opacity:.28;animation:none}
:root[data-mode="dark"] .mate.off .crewimg{filter:brightness(0) invert(.75);opacity:.18}
.ovl .mate .crewimg{width:110px;height:110px;animation:jump .55s var(--ease) 3}
.mate .mn{font-weight:700;font-size:.78rem}
.mate .mr{font-size:.66rem;color:var(--ink-2);line-height:1.25}
.mate svg .bob{animation:bob 2.8s ease-in-out infinite}
.lb{display:flex;gap:12px;align-items:center;padding:11px 14px;position:relative}
.lb + .lb::before{content:"";position:absolute;top:0;left:56px;right:0;border-top:1px solid var(--rule)}
.lb .rk{width:30px;text-align:center;font-family:var(--font-poster);color:var(--ink-3);flex:none}
.lb.me{background:var(--accent-soft)}
.lb .t{flex:1;min-width:0}
.lb .b{font-family:var(--font-num);font-weight:600;color:var(--gold);white-space:nowrap}
.tile .bounty{font-family:var(--font-poster);font-size:clamp(1.05rem,5.2vw,1.5rem);line-height:1.1;letter-spacing:.01em;overflow-wrap:anywhere}
#confetti{position:fixed;inset:0;pointer-events:none;z-index:95}
.ovl{position:fixed;inset:0;z-index:45;background:rgba(5,12,24,.55);display:flex;align-items:flex-end;justify-content:center;padding:12px max(12px,env(safe-area-inset-right,0px)) calc(12px + env(safe-area-inset-bottom,0px)) max(12px,env(safe-area-inset-left,0px));animation:fade .2s ease}
.ovl .box{background:var(--card);border-radius:26px;padding:22px;max-width:420px;width:100%;display:flex;flex-direction:column;gap:12px;align-items:center;text-align:center;animation:sheet .35s var(--ease);max-height:100%;overflow:auto}
@media (min-width:720px){.ovl{align-items:center}}
.tiny{font-size:.74rem}
.sched{display:flex;gap:12px;align-items:center;padding:11px 14px;position:relative;min-height:58px;width:100%;border:none;background:transparent;text-align:left}
.sched + .sched::before{content:"";position:absolute;top:0;left:60px;right:0;border-top:1px solid var(--rule)}
.sched .n{width:34px;height:34px;flex:none;border-radius:10px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-2);font-family:var(--font-num);font-size:.8rem;font-weight:600}
.sched.done .n{background:var(--ok-soft);color:var(--ok)} .sched.debt .n{background:var(--ng-soft);color:var(--ng)}
.sched .t{flex:1;min-width:0}.sched .t b{display:block;font-weight:600;line-height:1.3}.sched .t span{font-size:.82rem;color:var(--ink-2)}
.wd i.today{outline:2px solid var(--accent-2);outline-offset:1px}
.field.sel{font:inherit;font-size:16px;min-height:44px;padding:8px 12px;border:1.5px solid transparent;border-radius:var(--r-sm);background:var(--card-2);color:var(--ink);width:100%;min-width:0}
.minsbox{display:flex;flex-direction:column;gap:10px}
.minsbox .lh{display:flex;justify-content:space-between;align-items:baseline}
.chart7.c14{grid-template-columns:repeat(14,minmax(0,1fr));gap:3px}
.chart7.c14 .c span{font-size:.56rem;white-space:nowrap}
.chart7.c14 .c small{font-size:.56rem}
.chart7.c14 .c b{font-size:.62rem}
.chart7.c14 .c i{width:82%}
.seg.gtabs{flex-wrap:wrap}

/* smoother tab switching */
.tabs .pill{transform-origin:0 50%;will-change:transform;backface-visibility:hidden}
nav.tabs a{transition:color .35s cubic-bezier(.2,.8,.2,1)}
nav.tabs a .k{transition:color .35s cubic-bezier(.2,.8,.2,1)}
main.enter-r{animation:enterR .42s cubic-bezier(.16,1,.3,1)}
main.enter-l{animation:enterL .42s cubic-bezier(.16,1,.3,1)}
main.enter{animation:enter .36s cubic-bezier(.16,1,.3,1)}
@keyframes enterR{from{opacity:0;transform:translate3d(28px,0,0) scale(.992)}60%{opacity:1}to{opacity:1;transform:none}}
@keyframes enterL{from{opacity:0;transform:translate3d(-28px,0,0) scale(.992)}60%{opacity:1}to{opacity:1;transform:none}}
main{will-change:auto}
/* ===== grammar ===== */
.gm{color:var(--accent-2);font-weight:700;background:var(--accent-soft);border-radius:5px;padding:0 3px}
.lhead .gpat{font-family:var(--font-display);font-size:1.9rem;line-height:1.25;margin:2px 0;color:var(--ink)}
.gmean{font-weight:700;font-size:1.02rem}
.gconn{background:var(--card-2);border:1px dashed var(--rule-strong);border-radius:12px;padding:10px 12px;font-weight:600;line-height:1.6}
.gex{display:flex;flex-direction:column;gap:4px;padding:10px 0;border-top:1px solid var(--rule)}
.gex:first-of-type{border-top:none}
/* ===== mock exam ===== */
.cbt-tabs{overflow-x:auto;scrollbar-width:none}.cbt-tabs::-webkit-scrollbar{display:none}
.cbt-tabs button{flex:1 0 auto;min-width:62px}
.minst{font-size:.84rem;line-height:1.6;color:var(--ink-2);background:var(--card-2);border-left:3px solid var(--accent);border-radius:0 10px 10px 0;padding:8px 12px}
.psg{background:var(--card);box-shadow:var(--shadow);border-radius:16px;padding:14px 16px;line-height:1.95;font-size:.98rem;white-space:pre-wrap;max-height:46vh;overflow:auto;overscroll-behavior:contain;border:1px solid var(--rule)}
.psg b{color:var(--accent)}
.blk{color:var(--accent-2)!important;font-family:var(--font-num);font-weight:700}
.mq{font-size:1.02rem;line-height:1.8;font-weight:600}
.star{display:inline-grid;place-items:center;width:3.4em;border-bottom:2px solid var(--accent-2);color:var(--accent-2);margin:0 3px}
.ul6{display:inline-block;width:3.4em;border-bottom:2px solid var(--ink-3);margin:0 3px;height:1.2em;vertical-align:-2px}
.aubox{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:14px;background:var(--card-2);margin-bottom:10px}
.aubtn{width:52px;height:52px;flex:none;border-radius:50%;border:none;background:var(--accent);color:#fff;font-size:1.2rem;display:grid;place-items:center;box-shadow:0 4px 12px rgba(14,68,89,.3);transition:transform .15s var(--ease)}
.aubtn:active{transform:scale(.94)}.aubtn:disabled{opacity:.55}.aubtn.on{opacity:1;background:var(--accent-2)}
.eq{display:flex;gap:3px;align-items:flex-end;height:18px}.eq i{width:4px;background:#fff;border-radius:2px;animation:eq .8s ease-in-out infinite}.eq i:nth-child(2){animation-delay:.2s}.eq i:nth-child(3){animation-delay:.4s}
@keyframes eq{0%,100%{height:5px}50%{height:18px}}
.script{display:flex;flex-direction:column;gap:6px;font-size:.92rem;line-height:1.7;margin-top:6px}
.script div{display:flex;gap:8px}.script b{flex:none;min-width:2.4em;color:var(--accent-2);font-size:.78rem;padding-top:3px}
/* ===== word rain ===== */
.drops{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.drops i{position:absolute;top:-30px;width:2px;height:26px;border-radius:2px;background:linear-gradient(to bottom,transparent,rgba(190,225,255,.75));animation:rainf 1.6s linear infinite}
@keyframes rainf{to{transform:translateY(560px)}}
.raintile{position:relative;overflow:hidden}.raintile .tx{position:relative;z-index:1}
.rainhero{position:relative;overflow:hidden;border-radius:22px;min-height:150px;background:linear-gradient(170deg,#163a5c,#0b2238 60%,#071827);color:#fff;display:grid;place-items:center;text-align:center;box-shadow:var(--shadow)}
.rh-in{position:relative;display:flex;flex-direction:column;gap:2px;padding:20px}.rh-in .big{font-size:2.6rem;font-weight:700;line-height:1.1}
@media (prefers-reduced-motion: reduce){.drops i,.rsea{animation:none}.drops{display:none}}
.secgrid.s3{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.secgrid.s3>div{padding:12px 10px}
.blk.cur{background:var(--accent-2);color:#fff!important;border-radius:6px;padding:0 3px}

/* ===== Mưa Từ v2 ===== */
body.game nav.tabs{display:none}
.rtitle{display:flex;align-items:center;gap:12px}.rtitle h1{font-size:1.5rem;margin:0;line-height:1.2}.rtitle .rbest{margin-left:auto;white-space:nowrap;flex:none;background:var(--card);box-shadow:var(--shadow);border-radius:999px;padding:6px 12px;font-size:.9rem}
.rico{width:46px;height:46px;flex:none;border-radius:14px;display:grid;place-items:center;background:linear-gradient(160deg,#1c4f74,#0b2238);color:#8fd3ff;font-family:var(--font-display);font-size:1.3rem;border:1px solid rgba(143,211,255,.35)}
.rico.sm{width:40px;height:40px;font-size:1.1rem}
.rpick{display:flex;gap:12px;align-items:center;padding:14px;border-radius:18px;background:linear-gradient(120deg,rgba(28,79,116,.14),rgba(28,79,116,.04));border:1px solid rgba(60,140,190,.35)}
.rpick div{display:flex;flex-direction:column;gap:2px}
.rtabs{display:flex;gap:8px}.rtabs button{border:1.5px solid var(--rule-strong);background:transparent;color:var(--ink);border-radius:999px;padding:7px 14px;font-weight:600;font-size:.88rem;min-height:38px}
.rtabs button[aria-pressed="true"]{border-color:#2aa6d6;background:rgba(42,166,214,.12);color:var(--ink)}
.rdecks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.rdeck{position:relative;overflow:hidden;display:flex;flex-direction:column;align-items:flex-start;gap:3px;text-align:left;padding:14px;border-radius:16px;background:var(--card);box-shadow:var(--shadow);border:1.5px solid transparent;color:var(--ink);min-width:0}
.rdeck b{font-size:.98rem;line-height:1.25}.rdeck .small{overflow-wrap:anywhere}
.rdeck.on{border-color:#2aa6d6;box-shadow:0 0 0 3px rgba(42,166,214,.18),var(--shadow)}
.rdeck.on::after{content:"✓";position:absolute;top:8px;right:8px;width:22px;height:22px;border-radius:50%;background:#2aa6d6;color:#fff;display:grid;place-items:center;font-size:.75rem;font-weight:800}
.rdeck:disabled{opacity:.45}
.rdeck .dpg{position:absolute;left:0;bottom:0;height:4px;background:#2aa6d6}
.dic{width:42px;height:42px;flex:none;border-radius:12px;display:grid;place-items:center;font-family:var(--font-display);font-weight:700;font-size:1.15rem;color:#fff;background:var(--g-navy);margin-bottom:4px}
.rbar{position:fixed;left:max(10px,env(safe-area-inset-left,0px));right:max(10px,env(safe-area-inset-right,0px));bottom:calc(84px + env(safe-area-inset-bottom,0px));z-index:22;max-width:760px;margin:0 auto;display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:18px;background:var(--glass);backdrop-filter:blur(18px) saturate(1.6);-webkit-backdrop-filter:blur(18px) saturate(1.6);box-shadow:0 8px 30px rgba(16,36,70,.18);border:1px solid var(--glass-line)}
.rbar .dic{margin:0;width:38px;height:38px;font-size:1rem}.rbar .t{display:flex;flex-direction:column;min-width:0;flex:1}.rbar .t b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rbar .btn{min-height:40px;padding:8px 14px;white-space:nowrap}
.rainwrap{position:fixed;inset:0;z-index:40;display:flex;flex-direction:column;background:#071827;color:#fff;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);touch-action:manipulation;user-select:none;-webkit-user-select:none}
.rgame{position:relative;flex:1;overflow:hidden;margin:8px max(8px,env(safe-area-inset-right,0px)) 8px max(8px,env(safe-area-inset-left,0px));border-radius:20px;background:linear-gradient(180deg,#0f2740 0%,#0b1f33 45%,#0a2238 80%,#0c2e48 100%)}
.rgame.shake{animation:rshake .35s}
@keyframes rshake{25%{transform:translateX(-6px)}50%{transform:translateX(6px)}75%{transform:translateX(-3px)}}
.rcloud{position:absolute;left:-10%;right:-10%;top:-40px;height:120px;background:radial-gradient(60px 40px at 10% 60%,rgba(70,100,130,.35),transparent 70%),radial-gradient(90px 50px at 30% 50%,rgba(60,90,120,.35),transparent 70%),radial-gradient(80px 45px at 55% 65%,rgba(70,100,130,.3),transparent 70%),radial-gradient(100px 50px at 80% 55%,rgba(60,90,120,.35),transparent 70%);filter:blur(4px);animation:cloud 18s linear infinite alternate}
@keyframes cloud{to{transform:translateX(6%)}}
.rf{position:absolute;inset:0}
.rsea2{position:absolute;left:0;right:0;bottom:0;height:34px;background:linear-gradient(180deg,rgba(80,190,255,.0),rgba(60,170,240,.35) 40%,#0d3c5c);border-top:2px solid rgba(120,210,255,.75);box-shadow:0 -8px 24px rgba(80,190,255,.35)}
.rhud2{position:absolute;left:10px;right:10px;top:10px;display:flex;align-items:center;gap:8px;z-index:3;pointer-events:none}
.rpill{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;background:rgba(5,15,25,.55);border:1px solid rgba(255,255,255,.12);font-size:.85rem;white-space:nowrap}
.rpill.c{margin:0 auto;min-width:0;overflow:hidden}.rpill.c b{font-weight:700}.muted2{opacity:.7}
.rpill.lv i{font-style:normal;color:#ff6b81;font-size:1rem;line-height:1}.rpill.lv i.off{color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.55)}
.rside{position:absolute;right:10px;top:52px;display:flex;flex-direction:column;gap:8px;z-index:4}
.rside button{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.14);background:rgba(5,15,25,.55);color:#fff;font-size:.82rem;font-weight:700;display:grid;place-items:center}
.rmas{position:absolute;left:10px;bottom:20px;z-index:2}.rmas .cap{width:52px;height:78px}.rmas .cap.sm::after{display:none}
.rship{position:absolute;left:50%;bottom:18px;transform:translateX(-50%);width:76px;z-index:2;display:flex;flex-direction:column;align-items:center}
.rship svg{width:76px;height:60px;overflow:visible;animation:shipbob 2.6s ease-in-out infinite}#rcan{transition:transform .12s ease-out}
@keyframes shipbob{50%{transform:translateY(-3px) rotate(-1.5deg)}}
.rlbl{font-size:.7rem;background:rgba(5,15,25,.6);border-radius:999px;padding:2px 9px;white-space:nowrap;margin-top:-4px;opacity:.85}
.rbuf{position:absolute;bottom:100%;margin-bottom:6px;background:#fff;color:#0D1A2B;border-radius:10px;padding:2px 10px;font-weight:700;font-size:.95rem;opacity:0;transform:translateY(4px);transition:opacity .12s,transform .12s;white-space:nowrap}
.rbuf.on{opacity:1;transform:none}.rbuf.bad{background:#ff6b81;color:#fff;animation:rshake .25s}
.rcard{position:absolute;top:0;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 12px 7px;border-radius:12px;background:rgba(12,38,60,.92);border:1.5px solid rgba(110,200,255,.55);box-shadow:0 6px 18px rgba(0,0,0,.35),inset 0 0 12px rgba(110,200,255,.12);max-width:min(46%,220px);text-align:center;will-change:transform}
.rcard .m{font-weight:700;font-size:.92rem;line-height:1.25;color:#fff}
.rcard .k{display:flex;gap:4px;font-size:1.3rem;font-weight:700;line-height:1.2}.rcard .k i{font-style:normal;color:#f4c247}.rcard .k i.u{color:rgba(255,255,255,.6)}.rcard .k i.t{color:#4be08f}
.rcard.lock{border-color:#f4c247;box-shadow:0 0 0 2px rgba(244,194,71,.35),0 6px 18px rgba(0,0,0,.35)}
.rcard.sink{animation:sink .5s ease-in forwards}@keyframes sink{to{opacity:0;filter:blur(2px);margin-top:24px}}
.rbolt{position:absolute;height:3px;transform-origin:0 50%;background:linear-gradient(90deg,rgba(255,240,180,.2),#ffe08a);border-radius:2px;box-shadow:0 0 10px #ffd166;z-index:3;animation:bolt .25s ease-out forwards}
@keyframes bolt{0%{clip-path:inset(0 100% 0 0)}50%{clip-path:inset(0 0 0 0);opacity:1}100%{opacity:0}}
.rpt{position:absolute;width:6px;height:6px;border-radius:50%;background:#8fd3ff;box-shadow:0 0 8px #8fd3ff;z-index:3;animation:rpt .6s ease-out forwards}
@keyframes rpt{to{transform:translate(var(--dx),var(--dy)) scale(.3);opacity:0}}
.rfloat{position:absolute;transform:translate(-50%,-50%);font-weight:800;font-size:1.05rem;white-space:nowrap;z-index:3;pointer-events:none;animation:rfl 1.3s ease-out forwards;text-shadow:0 2px 6px rgba(0,0,0,.6)}
.rfloat.ok{color:#4be08f}.rfloat.ng{color:#ff6b81}.rfloat.gold{color:#ffd166}.rfloat.ctr{left:50%;top:42%;font-size:1.5rem;color:#ffd166}
@keyframes rfl{0%{opacity:0;margin-top:6px}15%{opacity:1}100%{opacity:0;margin-top:-38px}}
.rban{position:absolute;left:0;right:0;top:36%;padding:16px;text-align:center;background:linear-gradient(90deg,transparent,rgba(5,15,25,.65) 20%,rgba(5,15,25,.65) 80%,transparent);z-index:3;display:flex;flex-direction:column;gap:2px}
.rban b{font-size:2rem;color:#e7c25b;font-weight:800}.rban span{opacity:.85}.rban.go{animation:ban 2s ease-out forwards}
@keyframes ban{0%{opacity:0;transform:scaleY(.6)}12%{opacity:1;transform:none}80%{opacity:1}100%{opacity:0}}
.rov{position:absolute;inset:0;z-index:6;display:flex;align-items:center;justify-content:center;padding:14px;background:rgba(4,12,20,.72);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px)}
.rov[hidden]{display:none}
.rbox{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;max-width:440px;width:100%}.rbox h2{margin:0;font-size:1.5rem}
.rbox .cap{width:90px;height:120px}.rscore{font-size:1.6rem}.rscore b{color:#ffd166}
.rbtns{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:6px}.rbtns .btn.ghost,.rbox .btn.ghost{color:#fff;border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.08)}
.rbox.wide{background:#10202f;border:1px solid rgba(255,255,255,.12);border-radius:20px;padding:16px;align-items:stretch;text-align:left;max-height:100%}
.rml{display:flex;flex-direction:column;overflow:auto;max-height:46vh;margin:4px -4px}
.rmi{display:flex;align-items:center;gap:8px;padding:8px 4px;border-bottom:1px solid rgba(255,255,255,.08)}.rmi .w{flex:1;display:flex;flex-direction:column;min-width:0}
.rmi ruby{font-size:1.25rem;font-weight:700}.rmi rt{font-size:.62rem;opacity:.75}.rmi .w span{font-size:.82rem;opacity:.75}
.rsave{width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,.25);background:transparent;color:#ffd166;font-size:1.05rem}.rsave.on{background:rgba(255,209,102,.18)}
.rkb2{position:relative;padding:10px max(6px,env(safe-area-inset-left,0px)) 10px max(6px,env(safe-area-inset-right,0px));margin:0 8px 8px;border-radius:18px;background:#0e1c2a;display:flex;flex-direction:column;gap:6px}
.rkb2[hidden]{display:none}
.rkb2 .kr{display:flex;gap:5px;justify-content:center}
.rkb2 button[data-rk]{flex:1;max-width:58px;height:46px;border:none;border-radius:10px;background:#2b3b4d;color:#fff;font-family:var(--font-body);font-size:1.05rem;font-weight:700;box-shadow:0 2px 0 rgba(0,0,0,.4);touch-action:manipulation;transition:background .1s}
.rkb2 button.w{max-width:66px;flex:1.3}.rkb2 button.w2{max-width:90px;flex:1.8;background:#203040}
.rkb2 button.nx{background:#c9a227;color:#0D1A2B}.rkb2 button.hit{background:#4be08f;color:#0D1A2B;transform:translateY(1px)}
.rbulb{position:absolute;right:8px;top:-14px;width:28px;height:28px;border-radius:50%;border:none;background:#3a4756;font-size:.8rem;z-index:1;opacity:.6}.rbulb.on{background:#f4c247;opacity:1}
@media (min-width:700px){.rdecks{grid-template-columns:repeat(3,minmax(0,1fr))}.rcard .m{font-size:1rem}}
.rbtns .btn.danger{background:#ef5a5a;color:#fff;border-color:transparent}
/* tile label is not a leaderboard row */
.tile .lb{display:block;padding:0;gap:0;position:static}.tile .lb::before{display:none}
/* ===== dark mode polish ===== */
:root[data-mode="dark"] .tile{box-shadow:inset 0 1px 0 rgba(255,255,255,.16),inset 0 0 0 1px rgba(255,255,255,.05),0 12px 28px rgba(0,0,0,.4)}
:root[data-mode="dark"] .opt{border-color:var(--rule)}
:root[data-mode="dark"] .opt.sel{border-color:var(--accent-2)}
:root[data-mode="dark"] .group,:root[data-mode="dark"] .sheet,:root[data-mode="dark"] section.step{border:1px solid var(--rule);box-shadow:0 10px 28px rgba(0,0,0,.3)}
:root[data-mode="dark"] .cap .kimg{filter:drop-shadow(0 4px 10px rgba(0,0,0,.5))}
:root[data-mode="dark"] .cap::after{background:rgba(0,0,0,.4)}
:root[data-mode="dark"] .top .brand span{color:var(--gold)}
:root[data-mode="dark"] .field{background:var(--card-2);border-color:var(--rule-strong);color:var(--ink)}
:root[data-mode="dark"] .note{background:var(--card);border:1px solid var(--rule)}
:root[data-mode="dark"] nav.tabs .in{box-shadow:0 10px 30px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.06)}
:root[data-mode="dark"] .rpick{background:linear-gradient(120deg,rgba(120,110,220,.16),rgba(120,110,220,.04));border-color:rgba(154,166,236,.28)}
:root[data-mode="dark"] .rdeck.on{border-color:var(--accent);box-shadow:0 0 0 3px rgba(154,166,236,.2)}
:root[data-mode="dark"] .gconn{background:var(--card-2);border-color:var(--rule-strong)}
:root[data-mode="dark"] .minst{background:var(--card-2);border-left-color:var(--accent)}
:root[data-mode="dark"] .psg{background:var(--card);border-color:var(--rule)}
:root[data-mode="dark"] .gm{background:rgba(236,125,178,.16)}
.ovl .cap{width:130px;height:150px}.scorehero .cap{width:96px;height:120px}

/* ===== wanted poster on illustrated paper ===== */
.poster{position:relative;aspect-ratio:765/1024;width:100%;max-width:320px;margin:0 auto;background:url(../assets/img/img-010e8078.webp) center/100% 100% no-repeat;color:#3B2A12;text-align:center;container-type:inline-size;filter:drop-shadow(0 12px 18px rgba(30,20,10,.28))}
.poster>*{position:absolute;left:0;right:0}
.poster .tt{top:8.6%;font-family:var(--font-poster);font-size:9.6cqw;letter-spacing:.08em;line-height:1}
.poster .sub{top:16.9%;font-size:2.8cqw;letter-spacing:.32em;font-weight:700;opacity:.85}
.poster .ph{left:29.7%;right:auto;top:21.6%;width:40.6%;height:34.2%;overflow:hidden;display:flex;justify-content:center}
.poster .ph .cap{width:100%;height:100%;align-items:flex-start}.poster .ph .cap::after{display:none}
.poster .ph .kimg{width:118%;height:auto;max-width:none;margin-top:3%;animation:none!important;filter:sepia(.35) contrast(1.06) saturate(.9);mix-blend-mode:multiply}
.poster .ph svg{width:72%;height:auto}
.poster .nm{top:62%;padding:0 17%;font-family:var(--font-poster);font-size:6.4cqw;line-height:1.1;overflow-wrap:anywhere}
.poster .amt{top:70%;font-family:var(--font-poster);font-size:8.6cqw;white-space:nowrap;display:flex;justify-content:center;gap:1.5cqw;align-items:baseline;line-height:1}
.poster .amt small{font-size:4.4cqw}
.poster .foot{top:80.5%;font-size:2.7cqw;letter-spacing:.2em;font-weight:700;opacity:.75}
.poster.mini{max-width:132px;filter:drop-shadow(0 6px 10px rgba(30,20,10,.25))}
.poster.mini .foot{display:none}
:root[data-mode="dark"] .poster{filter:brightness(.92) drop-shadow(0 14px 26px rgba(0,0,0,.6))}

/* ===== illustrated icons ===== */
.ico{display:block;object-fit:contain;user-select:none;-webkit-user-drag:none}
.tile .ic.im{width:46px;height:46px;border-radius:0;background:none;margin:-6px 0 -2px -4px}
.tile .ic.im .ico{width:100%;height:100%;filter:drop-shadow(0 3px 5px rgba(0,0,0,.25));transform:rotate(-6deg);transition:transform .3s var(--ease)}
.tile:hover .ic.im .ico,.tile:active .ic.im .ico{transform:rotate(4deg) scale(1.1)}
.tile.streak .ic.im .ico{animation:flick 1.6s ease-in-out infinite;transform-origin:30% 90%}
@keyframes flick{0%,100%{transform:rotate(-6deg)}50%{transform:rotate(-1deg) scale(1.04)}}
.ghead h2 .ico.hd{display:inline-block;width:1.45em;height:1.45em;vertical-align:-.38em;margin-right:6px}
.raintile .ico.rt{position:absolute;right:10px;top:8px;width:92px;height:92px;z-index:1;filter:drop-shadow(0 6px 10px rgba(0,0,0,.25));animation:shipbob 3s ease-in-out infinite}
.raintile .tx{padding-right:84px}
.rico{background:linear-gradient(160deg,#dff1ff,#b9dcf5);border-color:rgba(43,51,88,.15)}.rico .ico{width:82%;height:82%}
:root[data-mode="dark"] .rico{background:linear-gradient(160deg,#24305e,#141a36);border-color:rgba(154,166,236,.3)}

/* ===== Mưa Từ illustrated night sky ===== */
.rgame{background:#0b1f33 url(../assets/img/img-ec513334.webp) center bottom/cover no-repeat}
.rgame .rcloud{display:none}
.rgame .rsea2{height:30px;background:linear-gradient(180deg,rgba(60,170,200,0),rgba(30,90,110,.55));border-top:1.5px solid rgba(140,230,230,.45);box-shadow:0 -6px 18px rgba(80,200,210,.18)}
.rgame .drops i{background:linear-gradient(to bottom,transparent,rgba(170,235,240,.55));width:1.5px}
.rcard{background:rgba(10,32,50,.82);border-color:rgba(130,225,230,.55)}
.rainhero{background:#0b1f33 url(../assets/img/img-ec513334.webp) center 70%/cover no-repeat}
.tile.raintile,.tile[data-rain]{background:linear-gradient(160deg,rgba(14,36,60,.15),rgba(14,36,60,.35)),url(../assets/img/img-ec513334.webp) center 72%/cover no-repeat,#0b1f33}

/* ===== app logo ===== */
.top .brand{display:inline-flex;align-items:center;gap:8px}
.top .brand .logo{width:26px;height:26px;border-radius:7px;filter:drop-shadow(0 2px 4px rgba(43,51,88,.25))}
.applogo{display:flex;align-items:center;gap:14px;padding:4px 2px}
.applogo img{width:76px;height:76px;filter:drop-shadow(0 8px 16px rgba(169,58,110,.3));animation:breathe 3.6s ease-in-out infinite}
.applogo div{display:flex;flex-direction:column;gap:2px}.applogo b{font-size:1.3rem}

/* ===== Koto party video ===== */
.kvwrap{width:min(230px,62vw);aspect-ratio:1/1;margin:0 auto;border-radius:22px;overflow:hidden;flex:none}
.kvwrap.sm{width:min(170px,44vw)}
.kvid{width:100%;height:100%;object-fit:cover;display:block;mix-blend-mode:multiply;filter:brightness(1.05) contrast(1.06)}
:root[data-mode="dark"] .kvwrap{background:#fff;box-shadow:0 0 0 3px rgba(239,199,122,.55),0 10px 26px rgba(0,0,0,.45)}
:root[data-mode="dark"] .kvid{mix-blend-mode:normal;filter:none}
/* ===== clearer segmented controls ===== */
.seg{border:1px solid var(--rule)}
.seg button{color:var(--ink-2);transition:background .2s var(--ease),color .2s,box-shadow .2s}
.seg button[aria-pressed="true"]{color:var(--accent-2);font-weight:700;box-shadow:0 1px 4px rgba(16,36,70,.15),inset 0 0 0 1.5px var(--accent-2)}
:root[data-mode="dark"] .seg{background:#0E1226;border-color:var(--rule-strong)}
:root[data-mode="dark"] .seg button{color:var(--ink-3)}
:root[data-mode="dark"] .seg button[aria-pressed="true"]{background:linear-gradient(160deg,#3A2B55,#2A2147);color:#FFD3E8;box-shadow:inset 0 0 0 1.5px var(--accent-2),0 4px 14px rgba(236,125,178,.22)}
:root[data-mode="dark"] .rtabs button{color:var(--ink-2);border-color:var(--rule-strong)}
:root[data-mode="dark"] .rtabs button[aria-pressed="true"]{background:rgba(236,125,178,.16);border-color:var(--accent-2);color:#FFD3E8}

/* ===== native keyboard bar (Mưa Từ) ===== */
body.game{overflow:hidden;overscroll-behavior:none}
/* the real input is invisible and sits at the TOP of the game, so iOS never scrolls the page to reveal it */
.rnat{position:absolute;left:0;right:0;top:0;height:40px;opacity:.011;overflow:hidden;pointer-events:none;z-index:1}
.rnat[hidden]{display:none}
.rnat input{width:100%;height:40px;font-size:16px;border:0;padding:0 8px;background:transparent;color:transparent;caret-color:transparent;outline:none;-webkit-appearance:none;appearance:none}
.rtap{position:absolute;left:50%;top:42%;transform:translate(-50%,-50%);z-index:6;display:flex;flex-direction:column;align-items:center;gap:4px;padding:14px 20px;border-radius:18px;background:rgba(5,15,25,.82);border:1.5px solid #f4c247;box-shadow:0 10px 30px rgba(0,0,0,.4);text-align:center;white-space:nowrap;animation:tapPulse 1.6s ease-in-out infinite}
.rtap[hidden]{display:none}.rtap b{font-size:1rem}.rtap span{font-size:.8rem;opacity:.75}
@keyframes tapPulse{50%{box-shadow:0 0 0 6px rgba(244,194,71,.18),0 10px 30px rgba(0,0,0,.4)}}
.rf{top:44px;overflow:hidden;-webkit-mask-image:linear-gradient(transparent,#000 26px);mask-image:linear-gradient(transparent,#000 26px)}
.rbuf{min-width:44px;text-align:center;font-size:1.05rem;padding:3px 12px;box-shadow:0 4px 14px rgba(0,0,0,.3)}
.rbuf.ph{background:rgba(255,255,255,.16);color:rgba(255,255,255,.75);font-weight:500;font-size:.8rem;font-family:var(--font-body)}
.rcard{will-change:transform;contain:layout style}

/* phone keyboard mode: whole game sits above the keyboard */
.rainwrap.kbon .rgame{margin-bottom:6px}
.rainwrap.kbon .rship{bottom:12px}.rainwrap.kbon .rship svg{width:66px;height:52px}
.rainwrap.kbon .rlbl{display:none}
.rainwrap.kbon .rside{top:46px;gap:6px}.rainwrap.kbon .rside button{width:34px;height:34px}

.rainwrap.kbon .rban{top:28%}
html:has(body.game){overflow:hidden}
html:has(body.game),body.game{background:#071827!important}
.rainwrap.kbon .rhud2{top:6px}

/* ===== Mưa Từ v3: HUD buttons, bigger play field, keyboard fit ===== */
.rhud2{left:8px;right:8px;gap:6px}
.rhud2 .rsp{flex:1}
.rpill.c{margin:0}
.rhb{pointer-events:auto;flex:none;width:36px;height:34px;border-radius:12px;border:1px solid rgba(255,255,255,.16);background:rgba(5,15,25,.6);color:#fff;font-size:.85rem;font-weight:700;display:grid;place-items:center;padding:0}
.rhb:active{transform:scale(.94);background:rgba(244,194,71,.25)}
.rside{display:none}
.rf{top:50px}
.rcard{padding:7px 13px 8px;max-width:min(58%,250px)}
.rcard .m{font-size:1rem;line-height:1.3}
.rcard .k{font-size:1.4rem;gap:5px}
.rmas .cap{width:58px;height:86px}
.rbuf{font-size:1.2rem;padding:4px 14px;border-radius:12px}
.rbuf.ph{font-size:.85rem}
/* phone keyboard: no bottom safe-area/margins (keyboard covers it) */
.rainwrap.kbon{padding-bottom:0}
.rainwrap.kbon .rgame{margin-bottom:4px;border-radius:18px}
/* drag handle to make the game meet the keyboard exactly */
.rkadj{position:absolute;right:8px;bottom:6px;z-index:5;display:flex;align-items:center;gap:6px;touch-action:none;cursor:ns-resize}
.rkadj[hidden]{display:none}
.rkadj span{width:34px;height:34px;border-radius:12px;display:grid;place-items:center;background:rgba(5,15,25,.6);border:1px solid rgba(255,255,255,.2);font-size:1rem;font-weight:700}
.rkadj em{display:none;position:absolute;right:0;bottom:calc(100% + 6px);font-style:normal;font-size:.72rem;background:#f4c247;color:#0D1A2B;padding:3px 8px;border-radius:8px;font-weight:700;order:-1;white-space:nowrap}
.rkadj.tip em{display:block;animation:tapPulse 1.6s ease-in-out infinite}
.rkadj.drag span{background:#f4c247;color:#0D1A2B;border-color:#f4c247}
/* difficulty picker on the deck menu */
#rspd{font-size:.72rem;letter-spacing:-.02em}

/* ===== Mưa Từ v4 ===== */
/* settings sheet on the menu */
.rset{display:flex;flex-direction:column;gap:10px;padding:12px;border-radius:18px;background:var(--card);border:1px solid var(--rule)}
.rsl{display:flex;flex-direction:column;gap:6px}.rsl>b{font-size:.82rem;color:var(--ink-2)}
.rseg{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.rseg.sp{grid-template-columns:repeat(6,minmax(0,1fr))}@media (max-width:520px){.rseg.sp{grid-template-columns:repeat(3,minmax(0,1fr))}}
.rseg button{display:flex;flex-direction:column;align-items:center;gap:1px;padding:8px 4px;border-radius:12px;border:1px solid var(--rule-strong);background:var(--card-2);color:var(--ink);font:inherit;min-width:0}
.rseg button b{font-size:.92rem}.rseg button span{font-size:.66rem;color:var(--ink-3);text-align:center;line-height:1.25}
.rseg button[aria-pressed="true"]{border-color:var(--accent-2);box-shadow:inset 0 0 0 1.5px var(--accent-2);color:var(--accent-2);background:var(--card)}
.rseg button[aria-pressed="true"] span{color:var(--accent-2)}
:root[data-mode="dark"] .rseg button[aria-pressed="true"]{background:rgba(236,125,178,.14);color:#FFD3E8}
/* kanji cards */
.rcard .kj{font-size:1.75rem;font-weight:700;line-height:1.2;color:#fff;letter-spacing:.02em}
.rcard.kj{border-color:rgba(244,194,71,.5)}
.rcard.hit{border-color:#4be08f;box-shadow:0 0 0 3px rgba(75,224,143,.35),0 0 24px rgba(75,224,143,.45)}
/* hit effects */
.rbolt{height:5px;background:linear-gradient(90deg,rgba(255,240,180,.1),#fff3c4 60%,#ffd166);box-shadow:0 0 14px #ffd166,0 0 4px #fff}
.rmz{position:absolute;width:34px;height:34px;margin:-17px 0 0 -17px;border-radius:50%;background:radial-gradient(circle,#fff 0,#ffe08a 35%,rgba(255,170,60,.0) 70%);z-index:3;animation:rmz .3s ease-out forwards;pointer-events:none}
@keyframes rmz{from{transform:scale(.4);opacity:1}to{transform:scale(1.6);opacity:0}}
.rring{position:absolute;width:20px;height:20px;margin:-10px 0 0 -10px;border-radius:50%;border:3px solid #ffe08a;box-shadow:0 0 16px #ffd166;z-index:3;animation:rring .55s ease-out forwards;pointer-events:none}
@keyframes rring{to{transform:scale(6);opacity:0;border-width:1px}}
.rpt{border-radius:2px}
.rfloat.pts{color:#ffd166;font-size:.95rem}
/* Koto speech bubble */
.rsay{position:absolute;left:62px;bottom:92px;z-index:4;max-width:60%;background:#fff;color:#0D1A2B;font-weight:800;font-size:.9rem;padding:5px 11px;border-radius:12px 12px 12px 3px;box-shadow:0 6px 16px rgba(0,0,0,.35);white-space:nowrap;pointer-events:none}
.rsay[hidden]{display:none}.rsay.go{animation:rsay 1.3s ease-out forwards}
@keyframes rsay{0%{transform:scale(.6) translateY(6px);opacity:0}12%{transform:scale(1.05);opacity:1}20%{transform:none}80%{opacity:1}100%{opacity:0;transform:translateY(-6px)}}
.rainwrap.kbon .rsay{bottom:84px;font-size:.82rem}
/* missed word: retype card */
.rre{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:5;width:min(92%,380px);display:flex;flex-direction:column;align-items:center;gap:4px;padding:14px 16px 12px;border-radius:20px;background:rgba(8,22,36,.94);border:2px solid #ff6b81;box-shadow:0 14px 40px rgba(0,0,0,.5);text-align:center;animation:rre .25s ease-out}
@keyframes rre{from{transform:translate(-50%,-50%) scale(.85);opacity:0}}
.rre .lbl{font-size:.78rem;font-weight:700;color:#ff9db0}
.rre .w{font-size:2.1rem;line-height:1.15;color:#fff}
.rre .rd{display:flex;gap:4px;font-size:1.5rem;font-weight:700}.rre .rd i{font-style:normal;color:#f4c247}.rre .rd i.t{color:#4be08f}
.rre .vn{font-size:.92rem;opacity:.9}.rre .ro{font-size:.8rem;opacity:.55;letter-spacing:.06em}
.rre .last{font-size:.75rem;color:#ffd166}
.rre.ok{border-color:#4be08f;box-shadow:0 0 0 4px rgba(75,224,143,.25),0 14px 40px rgba(0,0,0,.5)}
.rainwrap.kbon .rre{top:46%;padding:10px 12px 9px;gap:2px}.rainwrap.kbon .rre .w{font-size:1.7rem}.rainwrap.kbon .rre .rd{font-size:1.25rem}
/* game over */
.rov{overflow:auto;align-items:safe center}
.rbox.over{gap:6px}.rbox.over .cap{width:76px;height:100px}
.rnew{margin-left:8px;font-size:.75rem;background:#ffd166;color:#0D1A2B;padding:2px 8px;border-radius:999px;vertical-align:middle;font-weight:800}
.rstat{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;width:100%;margin-top:4px}
.rstat div{display:flex;flex-direction:column;align-items:center;padding:8px 4px;border-radius:12px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1)}
.rstat b{font-size:1.15rem;color:#ffd166}.rstat span{font-size:.7rem;opacity:.75}
.rfs{display:flex;flex-wrap:wrap;gap:4px 14px;justify-content:center;opacity:.9}
.rmh{font-size:.8rem;font-weight:700;padding:10px 4px 4px;opacity:.9}
.rmi .rok{color:#4be08f;font-weight:800;width:32px;text-align:center}
/* desktop: centred frame, everything larger */
@media (min-width:820px){
 .rainwrap{background:radial-gradient(1200px 700px at 50% 30%,#0e2a44,#050d17)}
 .rgame{width:min(780px,calc(100% - 32px));margin:14px auto;align-self:center;box-shadow:0 30px 80px rgba(0,0,0,.5),0 0 0 1px rgba(140,230,230,.12)}
 .rcard{padding:9px 16px 10px;max-width:300px;border-radius:14px}
 .rcard .m{font-size:1.18rem}.rcard .kj{font-size:2.2rem}.rcard .k{font-size:1.65rem}
 .rship{width:104px}.rship svg{width:104px;height:84px}
 .rmas .cap{width:84px;height:124px}.rsay{left:92px;bottom:128px;font-size:1rem}
 .rbuf{font-size:1.45rem;padding:5px 16px}
 .rpill{font-size:.95rem;padding:6px 13px}.rhb{width:40px;height:38px;font-size:.95rem}
 .rfloat{font-size:1.25rem}.rre .w{font-size:2.6rem}
}
@media (max-width:420px){.rhud2{gap:4px;left:6px;right:6px}.rpill{padding:4px 8px;gap:4px;font-size:.8rem}.rpill.lv i{font-size:.9rem}.rhb{width:32px;height:32px}}

/* ===== smoothness ===== */
html{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
:is(.btn,.opt,.tile,.lrow,.themebtn,.rdeck,.rseg button,.seg button,.rtabs button,.spk,.rhb,.elgrid button,.wt,.aubtn,.secgrid>div,.mtile,.gitem,.chip):active{transform:scale(.965);transition:transform .06s ease-out,background-color .06s,box-shadow .06s}
nav.tabs a:active .k{transform:scale(.9);transition:transform .06s}
nav.tabs .in{backdrop-filter:blur(12px) saturate(1.5);-webkit-backdrop-filter:blur(12px) saturate(1.5)}
/* keep looping decorations on their own GPU layer; pause them when off-screen */
.cap.live .kimg,.mate .crewimg,.applogo img,.raintile .ico.rt,.tile.streak .ic.im .ico,.ship>g{will-change:transform}
.offs,.offs *{animation-play-state:paused!important}

/* ===== Koto combo clip ===== */
.cvid{position:fixed;right:max(12px,env(safe-area-inset-right,0px));bottom:calc(96px + env(safe-area-inset-bottom,0px));z-index:70;width:min(150px,38vw);aspect-ratio:1/1;border-radius:24px;overflow:hidden;background:#fff;box-shadow:0 14px 34px rgba(16,24,60,.28),0 0 0 3px rgba(239,199,122,.7);opacity:0;transform:scale(.6) translateY(20px);pointer-events:none}
.cvid.in{animation:cvin 3.4s cubic-bezier(.2,1.3,.4,1) forwards;pointer-events:auto}.cvid.out{animation:cvout .25s ease-in forwards}
@keyframes cvin{0%{opacity:0;transform:scale(.6) translateY(20px)}10%{opacity:1;transform:scale(1.04)}16%{transform:none}90%{opacity:1;transform:none}100%{opacity:0;transform:scale(.9) translateY(10px)}}
@keyframes cvout{to{opacity:0;transform:scale(.85)}}
.cvid video,.rcv video{width:100%;height:100%;object-fit:cover;display:block;mix-blend-mode:multiply}
:root[data-mode="dark"] .cvid video{mix-blend-mode:normal}
body.exam .cvid{display:none}
.rcv{width:96px;height:96px;border-radius:22px;overflow:hidden;background:#fff;box-shadow:0 0 0 3px rgba(244,194,71,.8),0 0 26px rgba(244,194,71,.55);animation:rcvin .3s cubic-bezier(.2,1.4,.4,1)}
.rcv video{mix-blend-mode:normal}
@keyframes rcvin{from{transform:scale(.4);opacity:0}}
@media (min-width:820px){.rcv{width:130px;height:130px}}
/* ===== Ngữ pháp v2 ===== */
.h3i{display:flex;align-items:center;gap:8px}.h3i .ico{width:30px;height:30px}
.gtools{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0 0 22px}
.gtool{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:3px;padding:12px;border-radius:18px;border:1px solid var(--rule);background:var(--card);color:var(--ink);text-align:left;font:inherit;box-shadow:var(--shadow);min-width:0}
.gtool .i .ico{width:40px;height:40px}.gtool b{font-size:.92rem}.gtool span:not(.i){font-size:.7rem;color:var(--ink-3);line-height:1.3}
.gtool .dot{position:absolute;top:8px;right:10px;font-style:normal;background:var(--ng);color:#fff;font-size:.7rem;font-weight:800;min-width:20px;height:20px;border-radius:10px;display:grid;place-items:center;padding:0 5px}
.gtool:disabled{opacity:.55}
.gtests{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin:0 0 22px}
.gtest{position:relative;display:flex;flex-direction:column;align-items:center;gap:1px;padding:10px 4px;border-radius:14px;border:1px solid var(--rule);background:var(--card);color:var(--ink);font:inherit;min-width:0;overflow:hidden}
.gtest b{font-size:.85rem}.gtest span{font-size:.62rem;color:var(--ink-3)}.gtest em{font-style:normal;font-size:.7rem;font-weight:700;color:var(--accent-2);margin-top:2px}
.gtest.pass{border-color:var(--gold,#c9a227);background:linear-gradient(160deg,rgba(239,199,122,.22),var(--card))}.gtest.pass em{color:#a8801a}
.gtest .gm{position:absolute;right:-6px;top:-6px;width:30px;height:30px;opacity:.9}
.gtest:disabled{opacity:.6}
@media (max-width:420px){.gtests{grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}.gtools{gap:8px}.gtool{padding:10px}.gtool .i .ico{width:34px;height:34px}}
.gcfs{position:relative}.mio.think{position:absolute;right:6px;top:-14px;width:64px;height:auto;pointer-events:none;filter:drop-shadow(0 4px 8px rgba(0,0,0,.15))}
.gcf{display:flex;flex-wrap:wrap;gap:8px}
.gchip{display:flex;flex-direction:column;align-items:flex-start;padding:7px 11px;border-radius:12px;border:1px solid var(--rule-strong);background:var(--card-2);color:var(--ink);font:inherit;text-align:left}
.gchip b{font-size:1rem}.gchip span{font-size:.72rem;color:var(--ink-3)}
.gerr{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:12px;background:var(--ng-soft);border:1px dashed var(--ng)}
.gerr .x{color:var(--ng);font-weight:900;font-size:1.2rem}.gerr .jp{flex:1;line-height:1.7;text-decoration:line-through;text-decoration-color:rgba(220,60,60,.6)}
.gsent{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:1.05rem;line-height:2;margin:10px 0}
.gsl{min-width:64px;min-height:38px;padding:4px 10px;border-radius:10px;border:1.5px dashed var(--rule-strong);background:var(--card-2);color:var(--ink-3);font:inherit;font-size:1rem}
.gsl.on{border-style:solid;border-color:var(--accent);color:var(--ink);background:var(--card)}
.gsl.star{border-color:var(--accent-2);color:var(--accent-2);font-weight:800}.gsl.star.on{box-shadow:inset 0 0 0 1.5px var(--accent-2)}
.gsl.ok{border-color:var(--ok);background:var(--ok-soft)}.gsl.ng{border-color:var(--ng);background:var(--ng-soft)}
.gpool{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0}
.gch{padding:8px 14px;border-radius:12px;border:1px solid var(--rule-strong);background:var(--card);color:var(--ink);font:inherit;font-size:1rem;box-shadow:0 2px 6px rgba(16,36,70,.08)}
.gch:disabled{opacity:.3}
.gstar-ans{margin-top:4px;color:var(--ink-2)}
.gfc{position:relative;display:block;width:100%;min-height:260px;border:none;padding:0;background:none;perspective:1000px;font:inherit;color:var(--ink)}
.gfc .fr,.gfc .bk{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:20px;border-radius:24px;background:var(--card);box-shadow:var(--shadow);border:1px solid var(--rule);backface-visibility:hidden;-webkit-backface-visibility:hidden;transition:transform .45s cubic-bezier(.3,1.2,.4,1);text-align:center}
.gfc .fr b{font-family:var(--font-display);font-size:2.1rem}
.gfc .bk{transform:rotateY(180deg)}.gfc.flip .fr{transform:rotateY(-180deg)}.gfc.flip .bk{transform:rotateY(0)}
.gfm{font-size:1.15rem}.gfbtn .btn{flex:1}
.gmgrid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.gmcol{display:flex;flex-direction:column;gap:8px}
.gmc{min-height:52px;padding:8px 10px;border-radius:14px;border:1.5px solid var(--rule-strong);background:var(--card);color:var(--ink);font:inherit;font-size:.92rem;line-height:1.3;transition:transform .1s,opacity .25s,background .15s}
.gmc.jp{font-size:1.05rem;font-weight:700}
.gmc.sel{border-color:var(--accent-2);background:var(--accent-soft);transform:scale(1.02)}
.gmc.got{opacity:0;pointer-events:none;transform:scale(.9)}
.gmc.bad{border-color:var(--ng);background:var(--ng-soft);animation:rshake .3s}
#gmt{font-weight:800;min-width:56px;text-align:right}
.mio.hero{width:110px;height:auto}
/* rain ship image */
.rship{width:96px}.rshipimg{width:96px;height:96px;object-fit:contain;animation:shipbob 2.6s ease-in-out infinite;filter:drop-shadow(0 6px 10px rgba(0,0,0,.35))}
.rainwrap.kbon .rshipimg{width:76px;height:76px}.rainwrap.kbon .rship{width:76px}
@media (min-width:820px){.rship{width:124px}.rshipimg{width:124px;height:124px}}
.rlbl{margin-top:-10px}
.gsl{white-space:nowrap}
.mio.think{top:6px;right:8px;width:54px}
.gcfs h3{padding-right:60px}
/* ===== Thi thử v2 ===== */
.examhero{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:22px;margin:0 0 18px;background:linear-gradient(90deg,rgba(255,250,240,.92),rgba(255,250,240,.55)),url(../assets/img/img-f389870f.webp) center/cover;border:1px solid var(--rule);color:#2b2118;min-height:110px}
.examhero .mio{width:84px;height:auto;flex:none}.examhero div{display:flex;flex-direction:column;gap:2px}.examhero b{font-size:1.15rem}.examhero span{font-size:.8rem;opacity:.8}
:root[data-mode="dark"] .examhero{background:linear-gradient(90deg,rgba(20,25,50,.92),rgba(20,25,50,.6)),url(../assets/img/img-f389870f.webp) center/cover;color:var(--ink)}
.minigrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:0 0 20px}
.minib{display:flex;flex-direction:column;align-items:flex-start;gap:1px;padding:10px;border-radius:14px;border:1px solid var(--rule);background:var(--card);color:var(--ink);font:inherit;text-align:left;min-width:0}
.minib span{font-size:.7rem;color:var(--accent-2);font-weight:700}.minib b{font-size:.82rem;line-height:1.3}.minib em{font-style:normal;font-size:.7rem;color:var(--ink-3)}
.mweak{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}.mw{display:flex;flex-direction:column;gap:5px;padding-top:8px;border-top:1px solid var(--rule)}.mw .btn{align-self:flex-start;min-height:34px;padding:4px 12px}
.jlptrep{position:relative;border-radius:18px;background:#fffdf6;color:#2b2118;border:2px solid #c9b88a;padding:14px 14px 16px;box-shadow:var(--shadow);overflow:hidden}
.jlptrep .jr-h{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:.72rem;border-bottom:1px solid #d8cba3;padding-bottom:8px;margin-bottom:8px}
.jr-lv{font-weight:800;font-size:1.1rem;border:2px solid #2b2118;border-radius:8px;padding:0 8px}
.jlptrep table{width:100%;border-collapse:collapse;font-size:.85rem}.jlptrep th{font-size:.68rem;text-align:left;color:#7a6a4a;font-weight:600;padding:4px}
.jlptrep td{padding:7px 4px;border-top:1px dashed #e2d6b2}.jlptrep td b{font-size:1.15rem}.jlptrep td.ok{color:#2f8a52;font-weight:700}.jlptrep td.ng{color:#c0392b;font-weight:700}
.jlptrep tr.tot td{border-top:2px solid #c9b88a;font-weight:700}
.jr-st{position:absolute;right:14px;bottom:10px;width:76px;height:76px;border-radius:50%;border:3px solid;display:flex;flex-direction:column;align-items:center;justify-content:center;transform:rotate(-12deg);font-weight:900;opacity:.85}
.jr-st span{font-size:1.15rem}.jr-st small{font-size:.6rem}.jr-st.ok{color:#c0392b;border-color:#c0392b}.jr-st.ng{color:#7a6a4a;border-color:#7a6a4a}
.jlptrep table{width:calc(100% - 70px)}
.mchart svg{width:100%;height:auto}.mchart rect.b-ok{fill:var(--ok)}.mchart rect.b-ng{fill:var(--accent)}.mchart line.pass{stroke:var(--ng);stroke-dasharray:4 4;stroke-width:1.5}
.mchart .t{font-size:9px;fill:var(--ink);font-weight:700}.mchart .t2{font-size:8px;fill:var(--ink-3)}
.aiex{display:flex;flex-direction:column;gap:5px;padding:10px 12px;border-radius:12px;background:var(--accent-soft);border:1px solid var(--rule);font-size:.88rem;line-height:1.6}
.aiex .aih{font-weight:800;font-size:.8rem;color:var(--accent-2)}.aibtn{align-self:flex-start}
.script .lplay{margin-left:auto;flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--rule-strong);background:var(--card);color:var(--accent-2);font-size:.65rem;display:grid;place-items:center}
.script>div{display:flex;gap:8px;align-items:flex-start}
.aubox{position:relative}.aubox .aui{width:40px;height:40px;margin-left:auto;opacity:.9}
.mbrk{align-items:center;text-align:center;padding-top:10px}.mbrk h1{font-size:1.3rem;margin:0}
.msheetbox{max-height:86vh;display:flex;flex-direction:column;gap:8px}
.msheet{overflow:auto;display:flex;flex-direction:column;gap:2px;padding-right:4px}
.msh-h{font-size:.75rem;font-weight:700;color:var(--accent-2);padding:8px 0 2px}
.msh-r{display:flex;align-items:center;gap:6px;padding:3px 4px;border-radius:10px}.msh-r.cur{background:var(--accent-soft)}
.msh-n{width:34px;height:30px;border-radius:8px;border:1px solid var(--rule-strong);background:var(--card);color:var(--ink);font:inherit;font-size:.8rem;font-weight:700}.msh-n.fl{border-color:var(--gold,#c9a227);box-shadow:inset 0 0 0 2px rgba(201,162,39,.5)}
.bub{width:32px;height:32px;border-radius:50%;border:1.5px solid var(--rule-strong);background:var(--card);color:var(--ink-2);font-size:1rem;display:grid;place-items:center;padding:0}
.bub.on{background:var(--ink);color:var(--card);border-color:var(--ink)}
.mockhero .mio.hero{width:96px}
.jlptrep table{width:100%}.jr-st{position:relative;right:auto;bottom:auto;margin:10px 4px 0 auto}
.mw .top2{gap:10px}
@media (max-width:440px){.cbt-bar .cb{padding:6px 9px;font-size:.78rem}.cbt-bar .ttl{font-size:.74rem}.cbt-bar .clock{font-size:1rem}}
/* ===== avatars ===== */
.avc{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:50%;overflow:hidden;background:radial-gradient(circle at 50% 35%,#fff7e6,#f1d9a8);box-shadow:inset 0 0 0 2px rgba(201,162,39,.55);flex:none}
.avc img{width:100%;height:100%;object-fit:cover;object-position:50% 18%}
:root[data-mode="dark"] .avc{background:radial-gradient(circle at 50% 35%,#3a3f6e,#1e2347);box-shadow:inset 0 0 0 2px rgba(239,199,122,.55)}
.avgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:10px}
.avopt{border:none;background:none;padding:4px;border-radius:50%;display:grid;place-items:center}
.avopt .avc{width:62px;height:62px}
.avopt.on .avc{box-shadow:0 0 0 3px var(--accent-2),inset 0 0 0 2px rgba(201,162,39,.55);transform:scale(1.04)}
.avbtn{border:none;background:none;padding:0;border-radius:50%}.avbtn .avc{width:38px;height:38px}
.lb .lav{width:34px;height:34px;margin-right:8px}
.tav{width:46px;height:46px}.sav{width:26px;height:26px}
.poster .ph .pav{width:100%;height:100%;object-fit:cover;object-position:50% 20%;filter:sepia(.35) contrast(1.06) saturate(.9);mix-blend-mode:multiply}
.auwait{display:flex;flex-direction:column;gap:5px;margin:-4px 0 10px;padding:8px 12px;border-radius:12px;background:color-mix(in oklab,var(--accent) 10%,var(--card))}
.auwait .bar{height:5px;border-radius:3px;background:var(--line);overflow:hidden}.auwait .bar i{display:block;height:100%;background:var(--accent);transition:width .5s linear}
.qword.jp{font-size:1.35rem;text-align:center;padding:6px 0;font-weight:700}
/* ===== grammar flashcard v2 ===== */
:root{--fcp:#fffdf6;--fcp2:#f6f0e1;--fcl:rgba(60,40,10,.12);--fce:#e3d8bf;--fcr:rgba(70,120,190,.18);--fcred:rgba(205,70,70,.55);--fcsh:rgba(40,25,5,.35)}
@media (prefers-color-scheme: dark){:root:not([data-mode]):not([data-theme="light"]){--fcp:#2a2621;--fcp2:#231f1b;--fcl:rgba(255,240,210,.10);--fce:#3b352c;--fcr:rgba(140,180,240,.13);--fcred:rgba(240,110,110,.45);--fcsh:rgba(0,0,0,.6)}}
:root[data-mode="dark"],:root[data-theme="dark"]{--fcp:#2a2621;--fcp2:#231f1b;--fcl:rgba(255,240,210,.10);--fce:#3b352c;--fcr:rgba(140,180,240,.13);--fcred:rgba(240,110,110,.45);--fcsh:rgba(0,0,0,.6)}
.gfhead{display:flex;justify-content:space-between;align-items:baseline}
.fcstage{position:relative;perspective:1400px;width:100%;max-width:440px;margin:4px auto 6px;height:min(58vh,400px);height:min(60dvh,430px);min-height:300px}
.fcshadow{position:absolute;left:9%;right:9%;bottom:-16px;height:30px;border-radius:50%;background:radial-gradient(closest-side,var(--fcsh),transparent);filter:blur(4px);transition:transform .7s,opacity .7s}
.fc3d{position:absolute;inset:0;transform-style:preserve-3d;touch-action:pan-y;-webkit-touch-callout:none;cursor:pointer;outline:none;-webkit-tap-highlight-color:transparent;user-select:none;-webkit-user-select:none}
.fc3d:focus-visible .fcf{box-shadow:0 0 0 3px var(--accent)}
.fc3d.enter{animation:fcEnter .38s cubic-bezier(.2,.9,.3,1.15)}
@keyframes fcEnter{from{transform:translateY(26px) scale(.94);opacity:0}to{transform:none;opacity:1}}
.fclift{position:absolute;inset:0;transform-style:preserve-3d}
.fclift.lifting{animation:fcLift .7s ease}
@keyframes fcLift{0%{transform:none}45%{transform:translateY(-16px) scale(1.045)}100%{transform:none}}
.fcstage:has(.lifting) .fcshadow{animation:fcShadow .7s ease}
@keyframes fcShadow{45%{transform:scale(.78);opacity:.45}}
.fcin{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .7s cubic-bezier(.45,.05,.25,1.18)}
.gfwrap.flipped .fcin{transform:rotateY(180deg)}
.fcf{position:absolute;inset:0;border-radius:18px;backface-visibility:hidden;-webkit-backface-visibility:hidden;overflow:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:26px 20px 20px;text-align:center;color:var(--ink);
 background:radial-gradient(120% 80% at 15% 0%,rgba(255,255,255,.35),transparent 60%),linear-gradient(var(--fcp),var(--fcp2));
 box-shadow:inset 0 0 0 1px var(--fcl),0 1px 0 var(--fce),0 2px 0 var(--fce),0 14px 28px -12px var(--fcsh)}
.fcf.front{transform:translateZ(2px)}
.fcf.front::before{content:"";position:absolute;left:0;right:0;top:18px;height:2px;background:var(--fcred)}
.fcf.back{transform:rotateY(180deg) translateZ(2px);justify-content:flex-start;overflow-y:auto;overscroll-behavior:contain;padding-top:30px;
 background:repeating-linear-gradient(to bottom,transparent 0 29px,var(--fcr) 29px 30px) 0 46px/100% calc(100% - 46px) no-repeat,linear-gradient(var(--fcp),var(--fcp2))}
.fcf.back::before{content:"";position:absolute;left:0;right:0;top:18px;height:2px;background:var(--fcred)}
.fce{position:absolute;top:14px;bottom:14px;width:4px;background:var(--fce)}
.fce.l{left:-2px;transform:rotateY(-90deg)}.fce.r{right:-2px;transform:rotateY(90deg)}
.fcno{position:absolute;top:26px;left:16px;font-size:.72rem;color:var(--ink-3);font-variant-numeric:tabular-nums}
.fctag{position:absolute;top:26px;right:16px;font-size:.7rem;letter-spacing:.06em;color:var(--accent-2);font-weight:700}
.fcf.back .fctag{position:static;align-self:flex-end;margin:-6px 0 2px}
.fcp{font-family:var(--font-display);font-size:clamp(1.7rem,7vw,2.3rem);line-height:1.25}
.fcr{color:var(--accent-2);font-size:.95rem}
.fctap{position:absolute;bottom:16px;font-size:.75rem;color:var(--ink-3)}
.fcm{font-size:1.2rem;line-height:1.4;margin-top:6px}
.fcex{display:flex;flex-direction:column;gap:3px;text-align:left;width:100%;line-height:1.75;padding:6px 2px}
.fcex.sm{font-size:.9rem;opacity:.85}
.fccmp{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 10px}
.fccmp b{font-size:1.45rem;font-family:var(--font-display)}.fccmp i{font-style:normal;font-size:.75rem;color:var(--ink-3)}
.fcq{font-weight:700}
.fcrow{display:flex;flex-direction:column;gap:2px;width:100%;text-align:left;padding:4px 0;border-bottom:1px dashed var(--fcl)}
.fcrow b{font-size:1.05rem}
.fcnote{margin:6px 0 0;text-align:left;line-height:1.65;font-size:.9rem}
.fcstamp{position:absolute;z-index:5;top:34px;padding:4px 12px;background:var(--fcp);border:3px solid;border-radius:8px;font-weight:800;letter-spacing:.08em;opacity:0;pointer-events:none;font-size:1.05rem}
.fcstamp.ok{left:18px;color:var(--ok,#2f9e5b);transform:translateZ(40px) rotate(-14deg)}.fcstamp.ng{right:18px;color:var(--ng,#d64545);transform:translateZ(40px) rotate(14deg)}
.fcgrade{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:12px;visibility:hidden;opacity:0;transform:translateY(8px);transition:opacity .25s,transform .25s,visibility 0s .25s}
.gfwrap.flipped .fcgrade{visibility:visible;opacity:1;transform:none;transition:opacity .3s .25s,transform .3s .25s,visibility 0s .25s}
.fcgrade button{display:flex;flex-direction:column;align-items:center;gap:2px;padding:10px 4px;border-radius:14px;border:1px solid var(--rule);background:var(--card);font:inherit;color:var(--ink);cursor:pointer;transition:transform .12s}
.fcgrade button:active{transform:scale(.95)}
.fcgrade b{font-size:.95rem}.fcgrade span{font-size:.7rem;color:var(--ink-3)}
.fcgrade .g0 b{color:var(--ng,#d64545)}.fcgrade .g1 b{color:#c98a1b}.fcgrade .g2 b{color:var(--ok,#2f9e5b)}.fcgrade .g3 b{color:var(--accent)}
.fchint{text-align:center;margin:4px 0 0}
.gfsum{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.gfsum div{display:flex;flex-direction:column;align-items:center;padding:10px;border-radius:14px;background:var(--card);border:1px solid var(--rule)}
.gfsum b{font-size:1.3rem}.gfsum span{font-size:.75rem;color:var(--ink-3)}
.gfsum .g0 b{color:var(--ng,#d64545)}.gfsum .g1 b{color:#c98a1b}.gfsum .g2 b{color:var(--ok,#2f9e5b)}.gfsum .g3 b{color:var(--accent)}
@media (prefers-reduced-motion:reduce){.fcin{transition-duration:.01s}.fclift.lifting,.fc3d.enter{animation:none}}

/* flashcard v3: mobile */
body.gfmode nav.tabs{display:none}
html:has(body.gfmode),body.gfmode{overflow-x:hidden;overscroll-behavior-x:none}
body.gfmode main{padding-bottom:calc(20px + env(safe-area-inset-bottom,0px))}
.gfhead{align-items:center}
.gfbtns{display:flex;gap:6px}
.gfib{width:36px;height:36px;border-radius:50%;border:1px solid var(--rule);background:var(--card);color:var(--ink);font-size:1rem;display:grid;place-items:center;cursor:pointer;padding:0}
.gfib:disabled{opacity:.35;cursor:default}
.fcf.front{transition:visibility 0s linear .32s}
.fcf.back{visibility:hidden;transition:visibility 0s linear .32s}
.gfwrap.flipped .fcf.front{visibility:hidden}
.gfwrap.flipped .fcf.back{visibility:visible}
.fcf.back{overflow-y:auto;-webkit-overflow-scrolling:touch}
.fcexb{margin-top:auto;border:1px dashed var(--fcl);background:transparent;color:var(--ink-2);border-radius:999px;padding:7px 14px;font:inherit;font-size:.8rem;cursor:pointer;position:relative;z-index:2}
.fcexb b{color:var(--accent-2)}
.fcex{min-height:4.6em}
.fchint{text-align:center;margin:8px 0 0}
.fchint .post{display:none}.gfwrap.flipped .fchint .pre{display:none}.gfwrap.flipped .fchint .post{display:inline}
.fctut{position:absolute;left:0;right:0;bottom:-6px;display:flex;justify-content:space-between;align-items:center;padding:6px 10px;border-radius:12px;background:var(--ink);color:var(--bg,#fff);font-size:.78rem;z-index:6;animation:fcEnter .3s ease}
.fctut b{font-size:.82rem}
.fc3d.tut{animation:fcTut 2.4s ease-in-out}
.fc3d.tut .fcstamp.ok{animation:fcTutOk 2.4s ease-in-out}.fc3d.tut .fcstamp.ng{animation:fcTutNg 2.4s ease-in-out}
@keyframes fcTut{0%,100%{transform:none}20%{transform:translate3d(54px,0,0) rotate(3.5deg)}40%{transform:none}62%{transform:translate3d(-54px,0,0) rotate(-3.5deg)}82%{transform:none}}
@keyframes fcTutOk{0%,8%,36%,100%{opacity:0}20%{opacity:.75}}
@keyframes fcTutNg{0%,48%,78%,100%{opacity:0}62%{opacity:.75}}
@media (max-width:380px){.fcp{font-size:1.6rem}.fcm{font-size:1.05rem}.fcf{padding:24px 14px 16px}.fcgrade{gap:6px}.fcgrade button{padding:9px 2px}}
.fctut[hidden]{display:none!important}
.chart7 .c i.half{background:repeating-linear-gradient(135deg,var(--warn) 0 5px,color-mix(in oklab,var(--warn) 55%,transparent) 5px 10px)}
.stkwhy{margin:6px 0 2px;padding:8px 10px;border-radius:10px;background:color-mix(in oklab,var(--warn) 14%,transparent);line-height:1.5}
/* streak tasks */
.stkcard{border-radius:20px;background:var(--card);box-shadow:var(--shadow);border:1px solid var(--rule);overflow:hidden;margin-bottom:22px}
.stkcard .stkh{display:flex;align-items:center;gap:12px;padding:14px 16px;background:linear-gradient(135deg,color-mix(in oklab,var(--ng) 16%,transparent),color-mix(in oklab,var(--warn) 14%,transparent))}
.stkcard.done .stkh{background:linear-gradient(135deg,color-mix(in oklab,var(--ok) 18%,transparent),color-mix(in oklab,var(--warn) 10%,transparent))}
.stkh .ic{width:40px;height:40px;flex:none;display:grid;place-items:center}.stkh .ic svg,.stkh .ic img{width:36px;height:36px}
.stkh .tx{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}.stkh .tx b{font-size:1rem}
.stkn{display:flex;flex-direction:column;align-items:center;line-height:1}.stkn b{font-size:1.7rem;font-family:var(--font-display)}.stkn small{font-size:.7rem;color:var(--ink-3)}
.stkl{display:flex;flex-direction:column}
.stki{display:flex;align-items:center;gap:12px;padding:12px 16px;border:0;border-top:1px solid var(--rule);background:none;font:inherit;color:var(--ink);text-align:left;width:100%;cursor:pointer}
button.stki:active{background:color-mix(in oklab,var(--accent) 6%,transparent)}
.stki .ck{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:.85rem;border:2px solid var(--rule-strong);color:var(--ink-2)}
.stki.ok .ck{background:var(--ok);border-color:var(--ok);color:#fff}
.stki .t{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}.stki .t>span{font-size:.8rem;color:var(--ink-2)}
.stki.ok .t b{color:var(--ink-2);text-decoration:line-through;text-decoration-color:color-mix(in oklab,var(--ok) 60%,transparent)}
.stki .go{flex:none;font-size:.78rem;font-weight:700;color:var(--accent);white-space:nowrap}
.stki.pts{cursor:default}.stki .gbar{display:block;height:6px;border-radius:3px;background:var(--rule);overflow:hidden;margin-top:4px}.stki .gbar i{display:block;height:100%;background:var(--warn)}
.stki.pts.ok .gbar i{background:var(--ok)}
.stklate{display:flex;align-items:center;gap:12px;width:100%;margin:0 0 14px;padding:12px 14px;border-radius:16px;border:1px solid color-mix(in oklab,var(--warn) 45%,transparent);background:color-mix(in oklab,var(--warn) 14%,var(--card));font:inherit;color:var(--ink);text-align:left;cursor:pointer}
.stklate>span:first-child{font-size:1.5rem}.stklate>span:nth-child(2){display:flex;flex-direction:column;gap:2px;flex:1}
.tplan{margin:8px 0;padding:10px 12px;border-radius:12px;background:color-mix(in oklab,var(--warn) 10%,transparent);border:1px solid var(--rule)}
.tplan.done{background:color-mix(in oklab,var(--ok) 10%,transparent)}
.tph{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:4px}
.tplan ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:3px;font-size:.85rem}
.tplan li i{font-style:normal;display:inline-block;width:18px;color:var(--ink-3)}.tplan li.ok i{color:var(--ok);font-weight:700}

body.stest nav.tabs{display:none}
body.stest main{padding-bottom:calc(28px + env(safe-area-inset-bottom,0px))}
.tsubbar.live{position:sticky;bottom:calc(10px + env(safe-area-inset-bottom,0px));z-index:5;padding:10px 12px;border-radius:16px;background:color-mix(in oklab,var(--card) 88%,transparent);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);box-shadow:var(--shadow)}
.log .lday{margin:10px 0 4px;padding-top:6px;border-top:1px dashed var(--rule);font-weight:700;font-size:.82rem;display:flex;flex-wrap:wrap;gap:4px 8px;align-items:baseline}
.log .lday:first-of-type{border-top:0;margin-top:2px}
.log .lpts{font-weight:400;color:var(--ink-3);font-size:.75rem}
.xresume{display:flex;align-items:center;gap:12px;width:100%;margin:0 0 14px;padding:12px 14px;border-radius:16px;border:1px solid color-mix(in oklab,var(--accent) 40%,transparent);background:color-mix(in oklab,var(--accent) 10%,var(--card));font:inherit;color:var(--ink);text-align:left;cursor:pointer}
.xresume>span:first-child{font-size:1.4rem}.xresume>span:nth-child(2){display:flex;flex-direction:column;gap:2px;flex:1}.xresume .chev{font-weight:700;color:var(--accent);white-space:nowrap;font-size:.85rem}