:root {
  --bg: #fff8f0; --bg2: #fff; --ink: #1f2937; --muted: #64748b; --line: #fde2c8;
  --pri: #ff7a59; --blue: #3b82f6; --green: #10b981; --violet: #8b5cf6; --pink: #ec4899; --amber: #f59e0b; --red: #ef4444;
  --card: #ffffff; --soft: #fff1e6; --shadow: 0 6px 24px rgba(255, 122, 89, .14);
  --r: 20px; --fs: 19px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --bg: #141826; --bg2: #1c2135; --ink: #eef2ff; --muted: #a5b0c8; --line: #2c3450; --card: #1f2540; --soft: #262d4a; --shadow: 0 6px 24px rgba(0, 0, 0, .35); }
}
:root[data-theme="dark"] { --bg: #141826; --bg2: #1c2135; --ink: #eef2ff; --muted: #a5b0c8; --line: #2c3450; --card: #1f2540; --soft: #262d4a; --shadow: 0 6px 24px rgba(0, 0, 0, .35); }

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif; font-size: var(--fs); line-height: 1.75; color: var(--ink);
  background: var(--bg) radial-gradient(circle at 10% 0%, rgba(255, 122, 89, .18), transparent 40%), radial-gradient(circle at 90% 10%, rgba(59, 130, 246, .14), transparent 40%), radial-gradient(circle at 50% 100%, rgba(16, 185, 129, .12), transparent 45%); background-attachment: fixed; min-height: 100vh; }
a { color: var(--blue); }
h1, h2, h3 { line-height: 1.35; margin: .3em 0 .5em; }
h2 { font-size: 1.3em; }
textarea, input { font: inherit; color: var(--ink); background: var(--bg2); border: 2px solid var(--line); border-radius: 14px; padding: 10px 14px; width: 100%; }
textarea { min-height: 96px; resize: vertical; }
input[type=range] { padding: 0; accent-color: var(--pri); }
#app { max-width: 1280px; margin: 0 auto; padding: 0 16px 40px; container-type: inline-size; }
:root[data-device="phone"] #app { max-width: 430px; }
:root[data-device="tablet"] #app { max-width: 860px; }
:root[data-device="desktop"] #app { max-width: 1280px; }

/* header & nav */
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 0; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); min-width: 0; }
.brand b { font-size: 1.3em; font-weight: 900; display: block; background: linear-gradient(90deg, var(--pri), var(--pink), var(--violet)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand small { display: block; color: var(--muted); font-size: .78em; }
.logo { font-size: 2em; animation: swing 3s ease-in-out infinite; display: inline-block; }
.set-btn { font-size: 1.6em; border: 0; background: var(--card); width: 56px; height: 56px; border-radius: 50%; box-shadow: var(--shadow); cursor: pointer; flex: none; transition: transform .4s; }
.set-btn:hover { transform: rotate(90deg); }
.nav { display: flex; gap: 8px; overflow-x: auto; padding: 6px 2px 12px; scrollbar-width: thin; position: sticky; top: 0; z-index: 20; background: var(--bg); }
.nav a { flex: none; display: flex; align-items: center; gap: 6px; text-decoration: none; color: var(--ink); background: var(--card); border: 2px solid var(--line); padding: 8px 16px; border-radius: 999px; font-weight: 700; font-size: .92em; transition: .2s; }
.nav a b { font-size: 1.15em; }
.nav a:hover { transform: translateY(-2px); border-color: var(--pri); }
.nav a.on { background: linear-gradient(135deg, var(--pri), var(--pink)); color: #fff; border-color: transparent; }

/* landscape layout: side nav */
@container (min-width: 980px) {
  :root:not([data-layout="portrait"]) .shell { display: grid; grid-template-columns: 210px minmax(0, 1fr); grid-template-areas: "top top" "nav main" "foot foot"; column-gap: 22px; }
  :root:not([data-layout="portrait"]) .top { grid-area: top; }
  :root:not([data-layout="portrait"]) .nav { grid-area: nav; flex-direction: column; align-self: start; top: 10px; overflow: visible; background: transparent; }
  :root:not([data-layout="portrait"]) .main { grid-area: main; }
  :root:not([data-layout="portrait"]) .foot { grid-area: foot; }
}
:root[data-layout="landscape"] .shell { display: grid; grid-template-columns: 190px minmax(0, 1fr); grid-template-areas: "top top" "nav main" "foot foot"; column-gap: 18px; }
:root[data-layout="landscape"] .top { grid-area: top; }
:root[data-layout="landscape"] .nav { grid-area: nav; flex-direction: column; align-self: start; top: 10px; overflow: visible; background: transparent; }
:root[data-layout="landscape"] .nav a { padding: 8px 12px; }
:root[data-layout="landscape"] .main { grid-area: main; min-width: 0; }
:root[data-layout="landscape"] .foot { grid-area: foot; }

.main { min-width: 0; }
.main.enter > * { animation: rise .45s both; }
.main.enter > *:nth-child(2) { animation-delay: .06s; } .main.enter > *:nth-child(3) { animation-delay: .12s; } .main.enter > *:nth-child(4) { animation-delay: .18s; }
.foot { text-align: center; color: var(--muted); font-size: .85em; padding: 30px 0 10px; }
.ptitle { font-size: 1.7em; font-weight: 900; }

/* common */
.card { background: var(--card); border-radius: var(--r); padding: 22px; margin: 0 0 20px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 220px), 1fr)); }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 12px 0; }
.btn { font: inherit; font-weight: 700; font-size: .95em; padding: 10px 18px; border-radius: 14px; border: 2px solid var(--line); background: var(--bg2); color: var(--ink); cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; transition: transform .15s, box-shadow .15s, background .2s; }
.btn:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 4px 14px rgba(0, 0, 0, .1); }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.primary { background: linear-gradient(135deg, var(--pri), var(--pink)); color: #fff; border-color: transparent; }
.btn.ok { background: linear-gradient(135deg, var(--green), #22c55e); color: #fff; border-color: transparent; }
.btn.danger { color: var(--red); border-color: #fecaca; }
.btn.big { font-size: 1.05em; padding: 14px 24px; }
.btn.sm { font-size: .85em; padding: 6px 12px; }
.btn.tab.on { background: var(--ink); color: var(--bg2); border-color: var(--ink); }
.seg { gap: 8px; }
.small { color: var(--muted); font-size: .85em; }
.note { background: #fef9c3; color: #713f12; border-radius: 14px; padding: 12px 16px; }
:root[data-theme="dark"] .note { background: #3b3410; color: #fde68a; }
.good { color: #059669; font-weight: 700; margin-top: 8px; }
.bad { color: var(--red); font-weight: 700; margin-top: 8px; }
.big-ico { font-size: 3em; }
.bar { height: 14px; background: var(--soft); border-radius: 99px; overflow: hidden; flex: 1; min-width: 80px; }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--green), var(--blue), var(--violet)); border-radius: 99px; transition: width .6s; }

/* home */
.hero { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 20px; align-items: center; background: linear-gradient(135deg, #fff1e6, #fde7f3 50%, #e0f2fe); border-radius: 28px; padding: 30px; margin-bottom: 20px; box-shadow: var(--shadow); }
:root[data-theme="dark"] .hero { background: linear-gradient(135deg, #3a2a2a, #3a2440 50%, #1d3350); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .hero { background: linear-gradient(135deg, #3a2a2a, #3a2440 50%, #1d3350); } }
.hero h1 { font-size: 2.4em; font-weight: 900; margin: .2em 0; background: linear-gradient(90deg, var(--pri), var(--pink), var(--violet)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.badge { display: inline-block; background: var(--card); padding: 4px 14px; border-radius: 99px; font-size: .85em; font-weight: 700; color: var(--pri); }
.lead { font-size: 1.08em; }
.prog { display: flex; gap: 12px; align-items: center; margin-top: 10px; font-weight: 700; }
.hero-svg { width: 100%; max-height: 330px; }
.float1 { animation: float 4s ease-in-out infinite; } .float2 { animation: float 5s ease-in-out infinite .6s; } .float3 { animation: float 3.6s ease-in-out infinite 1.2s; }
@container (max-width: 700px) { .hero { grid-template-columns: 1fr; padding: 22px; } .hero h1 { font-size: 1.9em; } .hero-art { order: -1; max-width: 300px; margin: auto; } }
.tiles .tile { text-decoration: none; color: var(--ink); background: var(--card); border-radius: 22px; padding: 18px; display: flex; flex-direction: column; gap: 4px; border: 2px solid transparent; box-shadow: var(--shadow); transition: .25s; position: relative; overflow: hidden; }
.tiles .tile::after { content: ""; position: absolute; right: -30px; top: -30px; width: 90px; height: 90px; border-radius: 50%; background: var(--c); opacity: .18; transition: .3s; }
.tiles .tile:hover { transform: translateY(-4px) rotate(-.5deg); border-color: var(--c); }
.tiles .tile:hover::after { transform: scale(1.6); }
.ti { font-size: 2.1em; }
.tile b { font-size: 1.12em; }

/* svg */
.fig-svg { width: 100%; height: auto; display: block; --ink: #1f2937; }
.svg-pt { font: 900 22px "Noto Sans TC", sans-serif; }
.hero-svg { --ink: #1f2937; }
.svg-h { font: 900 26px "Noto Sans TC", sans-serif; fill: var(--ink); }
.svg-t { font: 700 21px "Noto Sans TC", sans-serif; fill: var(--ink); }
.svg-s { font: 500 18px "Noto Sans TC", sans-serif; fill: #1f2937; }
.svg-name { font: 700 18px "Noto Sans TC", sans-serif; fill: var(--ink); }
.svg-note { font: 500 15px "Noto Sans TC", sans-serif; fill: #b45309; }
.fig-svg .pop { animation: popIn .6s both; }
.fig-svg .pop:nth-of-type(2) { animation-delay: .15s; } .fig-svg .pop:nth-of-type(3) { animation-delay: .3s; } .fig-svg .pop:nth-of-type(4) { animation-delay: .45s; }
.slide-x { animation: slidex 2.6s ease-in-out infinite alternate; }
.rain line { animation: rain 1s linear infinite; }
.walk { animation: walk 6s linear infinite alternate; }
.concept .node { transition: .2s; cursor: pointer; } .concept .node:hover { opacity: .85; }
.flowline { stroke-dasharray: 10 8; animation: dash 1.2s linear infinite; }

/* guide */
.goals li { margin: 6px 0; }
.steps-g { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr)); }
.stp { display: flex; gap: 12px; background: var(--soft); border-radius: 16px; padding: 14px; animation: rise .5s both; animation-delay: var(--d); }
.stp-i { font-size: 2em; }
.stp p { margin: 4px 0 0; }
.cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.kw { font: inherit; font-weight: 700; border: 0; border-radius: 99px; padding: 6px 14px; cursor: pointer; color: #fff; background: hsl(var(--h) 75% 52%); transition: .2s; }
.kw:hover { transform: scale(1.08) rotate(-2deg); }
.kw-def { margin-top: 12px; min-height: 1.6em; padding: 10px 14px; background: var(--soft); border-radius: 14px; }
.flip, .fcard { perspective: 900px; cursor: pointer; min-height: 150px; }
.f-in { position: relative; width: 100%; height: 100%; min-height: inherit; transition: transform .6s; transform-style: preserve-3d; }
.flip.on .f-in, .fcard.on .f-in { transform: rotateY(180deg); }
.f-front, .f-back { position: absolute; inset: 0; backface-visibility: hidden; border-radius: 18px; padding: 18px; display: flex; flex-direction: column; justify-content: center; font-weight: 700; }
.f-front { background: linear-gradient(135deg, #fee2e2, #fecaca); color: #7f1d1d; }
.f-back { background: linear-gradient(135deg, #d1fae5, #a7f3d0); color: #064e3b; transform: rotateY(180deg); }
.tbl-wrap { overflow-x: auto; }
.spec { border-collapse: collapse; width: 100%; min-width: 640px; font-size: .9em; }
.spec th, .spec td { border: 1px solid var(--line); padding: 8px 10px; text-align: center; }
.spec th { background: linear-gradient(135deg, var(--pri), var(--pink)); color: #fff; }
.spec td:first-child { text-align: left; }
.spec td.has { background: rgba(16, 185, 129, .14); font-weight: 700; }
.spec tr.tot td { background: var(--soft); font-weight: 900; }

/* lessons */
.learn { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 18px; align-items: start; }
@container (max-width: 900px) { .learn { grid-template-columns: 1fr; } .lnav { flex-direction: row !important; overflow-x: auto; position: static !important; } .lnav a { flex: none; } }
:root[data-device="phone"] .learn, :root[data-device="tablet"] .learn, :root[data-layout="portrait"] .learn { grid-template-columns: 1fr; }
:root[data-device="phone"] .lnav, :root[data-device="tablet"] .lnav, :root[data-layout="portrait"] .lnav { flex-direction: row; overflow-x: auto; position: static; }
:root[data-device="phone"] .lnav a, :root[data-device="tablet"] .lnav a, :root[data-layout="portrait"] .lnav a { flex: none; }
.lnav { display: flex; flex-direction: column; gap: 8px; position: sticky; top: 70px; }
.lnav a { text-decoration: none; color: var(--ink); background: var(--card); border-left: 6px solid var(--c); border-radius: 12px; padding: 10px 12px; font-weight: 700; font-size: .9em; display: flex; gap: 8px; align-items: center; box-shadow: var(--shadow); }
.lnav a.on { background: var(--c); color: #fff; }
.lnav a.done::after { content: "✓"; margin-left: auto; color: var(--green); font-weight: 900; }
.lnav a.on.done::after { color: #fff; }
.lesson { background: var(--card); border-radius: var(--r); padding: 26px; box-shadow: var(--shadow); border-top: 8px solid var(--c); min-width: 0; }
.l-head { display: flex; gap: 14px; align-items: center; }
.l-ico { font-size: 2.6em; width: 76px; height: 76px; display: grid; place-items: center; background: var(--soft); border-radius: 22px; animation: bob 3s ease-in-out infinite; flex: none; }
.l-head h1 { font-size: 1.6em; font-weight: 900; color: var(--c); margin: 0; }
.page-img img { width: 100%; border-radius: 14px; border: 2px solid var(--line); animation: rise .4s; }
.b-q { background: linear-gradient(135deg, #fef3c7, #fde68a); color: #78350f; padding: 14px 18px; border-radius: 16px; font-weight: 700; font-size: 1.05em; }
.b-lead { font-size: 1.05em; color: var(--muted); border-left: 5px solid var(--c); padding-left: 14px; }
.b-p { text-indent: 2em; }
.b-h { color: var(--c); border-bottom: 3px dashed var(--line); padding-bottom: 6px; margin-top: 1.2em; }
.b-key { background: linear-gradient(135deg, #dbeafe, #ede9fe); color: #1e3a8a; padding: 18px; border-radius: 18px; font-weight: 900; font-size: 1.12em; }
.b-tip { background: #fdf4ff; color: #701a75; padding: 14px 18px; border-radius: 16px; border: 2px dotted #e879f9; }
.b-fig { margin: 16px 0; background: #fff; border-radius: 18px; padding: 12px; border: 1px solid #eee; }
.b-fig img { width: 100%; border-radius: 12px; }
.b-fig figcaption { font-size: .88em; color: #475569; margin-top: 8px; }
.b-dict { background: #ecfdf5; color: #064e3b; border-radius: 16px; padding: 14px 18px; margin: 14px 0; border-left: 6px solid var(--green); }
.b-dict p { margin: 6px 0 0; }
.b-law { background: #fffbeb; color: #78350f; border: 2px solid #fcd34d; border-radius: 16px; padding: 14px 18px; margin: 14px 0; }
.b-law p { margin: 6px 0 0; }
.b-trait { display: flex; gap: 14px; background: var(--soft); border-radius: 18px; padding: 16px; margin: 12px 0; transition: .2s; }
.b-trait:hover { transform: translateX(4px); }
.b-trait .tn { flex: none; width: 46px; height: 46px; border-radius: 50%; background: var(--c); color: #fff; font-weight: 900; display: grid; place-items: center; font-size: 1.2em; }
.b-trait h3 { margin: 0 0 4px; color: var(--c); }
.b-trait p { margin: 0; }
.b-ex { background: #eff6ff; color: #1e3a8a; border-radius: 18px; padding: 16px 18px; margin: 14px 0; position: relative; }
.ex-tag { display: inline-block; background: var(--blue); color: #fff; font-weight: 900; padding: 2px 14px; border-radius: 10px; margin-bottom: 6px; }
.b-ex p { margin: 0; }
.b-think, .b-forum { background: #fff7ed; color: #7c2d12; border-radius: 18px; padding: 16px 18px; margin: 14px 0; border: 2px dashed #fdba74; }
.b-forum { background: #f5f3ff; color: #4c1d95; border-color: #c4b5fd; }
.th-it { margin-top: 10px; }
.th-it textarea { margin-top: 4px; }
.ref { background: #ecfdf5; color: #065f46; padding: 10px 14px; border-radius: 12px; animation: rise .3s; }
.l-foot { justify-content: space-between; margin-top: 24px; }
.from { font-weight: 700; color: var(--muted); margin-top: 14px; }

/* exercises */
.sticky-tabs { position: sticky; top: 64px; z-index: 5; background: var(--bg); padding: 6px 0; }
.mcq { border-bottom: 1px dashed var(--line); padding: 12px 0; }
.mq { margin: 0 0 8px; }
.mopts { display: grid; gap: 8px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); }
.mo { font: inherit; text-align: left; padding: 10px 14px; border-radius: 12px; border: 2px solid var(--line); background: var(--bg2); color: var(--ink); cursor: pointer; transition: .15s; }
.mo:hover { border-color: var(--blue); }
.mo.right, .opt.right { background: #d1fae5 !important; border-color: #10b981 !important; color: #064e3b !important; }
.mo.wrong, .opt.wrong { background: #fee2e2 !important; border-color: #ef4444 !important; color: #7f1d1d !important; }
.mex { margin-top: 8px; background: var(--soft); padding: 10px 14px; border-radius: 12px; }
.lit { background: var(--soft); border-radius: 18px; padding: 16px; margin: 12px 0; }
.scene { font-weight: 700; color: var(--violet); }

/* lab */
.wtabs { grid-template-columns: repeat(auto-fill, minmax(min(100%, 150px), 1fr)); margin-bottom: 16px; }
.wtab { text-decoration: none; color: var(--ink); background: var(--card); border-radius: 18px; padding: 12px; text-align: center; box-shadow: var(--shadow); border: 3px solid transparent; transition: .2s; animation: rise .4s both; animation-delay: var(--d); }
.wtab span { font-size: 2em; display: block; }
.wtab b { font-size: .88em; }
.wtab.on { border-color: var(--pri); background: linear-gradient(135deg, #fff1e6, #fde7f3); color: #1f2937; }
.wtab:hover { transform: translateY(-3px); }
.widget { min-height: 420px; }
.hint { color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; min-height: 50px; }
.chip { font: inherit; font-weight: 700; padding: 8px 14px; border-radius: 99px; border: 2px solid var(--line); background: var(--bg2); color: var(--ink); cursor: pointer; transition: .15s; }
.chip.on { border-color: var(--pri); background: #ffedd5; color: #7c2d12; transform: scale(1.08); }
.chip.placed { cursor: default; font-size: .85em; padding: 4px 10px; }
.bins { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); margin-top: 16px; }
.bin { border: 3px dashed var(--line); border-radius: 18px; padding: 12px; min-height: 140px; cursor: pointer; transition: .2s; }
.bin:hover { border-color: var(--blue); }
.bin.flash { background: rgba(16, 185, 129, .18); border-color: var(--green); }
.bin-in { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.score-line { margin-top: 12px; font-weight: 700; color: var(--violet); }
.shake { animation: shake .4s; }
.wheel-wrap { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: 20px; align-items: center; }
@container (max-width: 700px) { .wheel-wrap { grid-template-columns: 1fr; } .wheel { max-width: 260px; margin: auto; } }
.wheel-g { transform-origin: 150px 150px; transition: transform 1s cubic-bezier(.2, .8, .2, 1); }
.case-box, .claim-card { background: var(--soft); border-radius: 18px; padding: 16px; font-weight: 700; min-height: 80px; margin: 12px 0; }
.claim-card .num { display: inline-block; background: var(--violet); color: #fff; border-radius: 10px; padding: 0 10px; font-size: .85em; margin-bottom: 6px; }
.opts { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 170px), 1fr)); }
.opt { justify-content: center; border-color: var(--c, var(--line)); }
.opt:hover { background: var(--c, var(--soft)); color: #fff; }
.pop-in { animation: popIn .45s both; }
.tl-bar { display: flex; align-items: center; justify-content: center; gap: 0; margin-bottom: 8px; }
.tl-dot { width: 44px; height: 44px; border-radius: 50%; border: 3px solid var(--line); background: var(--bg2); color: var(--ink); font: 900 1em inherit; cursor: pointer; }
.tl-dot.on { background: var(--violet); color: #fff; border-color: var(--violet); }
.tl-line { width: 40px; height: 4px; background: var(--line); }
.tl-text { background: var(--soft); border-radius: 16px; padding: 14px; font-weight: 700; min-height: 60px; }
.tl-svg { background: #fff; border-radius: 16px; }
.pc-move { transition: transform 1s cubic-bezier(.5, -0.3, .3, 1.4); }
.net { background: #fff; border-radius: 16px; }
.net-text { background: var(--soft); border-radius: 16px; padding: 14px; }
.law-strip { background: #fffbeb; color: #78350f; border-radius: 12px; padding: 10px 14px; font-weight: 700; font-size: .9em; }
.steps { display: grid; gap: 10px; margin: 14px 0; }
.step { display: flex; gap: 10px; align-items: center; background: var(--soft); padding: 12px 14px; border-radius: 14px; cursor: pointer; font-weight: 700; transition: .2s; }
.step input { width: 24px; height: 24px; accent-color: var(--green); }
.step.on { background: #d1fae5; color: #064e3b; }
.owner-meter { text-align: center; background: #fee2e2; color: #7f1d1d; border-radius: 18px; padding: 18px; font-size: 1.1em; transition: .4s; }
.owner-meter.ok { background: #d1fae5; color: #064e3b; transform: scale(1.02); }
.bal { background: #fff; border-radius: 16px; max-width: 640px; margin: auto; }
.beam { transform-origin: 300px 101px; transition: transform .4s; }
.slider-l { display: block; font-weight: 700; margin: 12px 0; }
.bal-text { border-radius: 16px; padding: 14px; font-weight: 700; }
.bal-text.mid { background: #d1fae5; color: #064e3b; } .bal-text.lo { background: #dbeafe; color: #1e3a8a; } .bal-text.hi { background: #fee2e2; color: #7f1d1d; }

/* extension */
.laws .lawcard { background: #fffbeb; color: #78350f; border-radius: 16px; padding: 14px; border-top: 5px solid var(--amber); }
.lawcard p { margin: 6px 0 0; font-size: .92em; }
.ext { border-left: 8px solid var(--violet); }
.links li { margin: 6px 0; }

/* practice */
.fcard { min-height: 230px; margin: 14px 0; }
.fcard .f-front { background: linear-gradient(135deg, #e0e7ff, #c7d2fe); color: #312e81; font-size: 1.5em; text-align: center; align-items: center; }
.fcard .f-front small { font-size: .5em; font-weight: 500; color: #4338ca; margin-top: 10px; }
.fcard .f-back { font-size: 1.15em; align-items: center; text-align: center; }
.tf-head { display: flex; justify-content: space-between; font-size: 1.2em; font-weight: 700; }
.timer b { color: var(--red); font-size: 1.3em; }
.tf-q { background: var(--soft); border-radius: 18px; padding: 24px; font-size: 1.25em; font-weight: 700; text-align: center; margin: 14px 0; min-height: 110px; display: grid; place-items: center; }
.ok-b { background: #d1fae5; color: #064e3b; flex: 1; justify-content: center; } .no-b { background: #fee2e2; color: #7f1d1d; flex: 1; justify-content: center; }
.result { text-align: center; font-size: 1.4em; font-weight: 900; padding: 30px; }

/* quiz */
.q-intro { text-align: center; }
.q-top { display: flex; gap: 12px; align-items: center; font-weight: 700; }
.q-card { background: var(--soft); border-radius: 20px; padding: 20px; margin: 14px 0; }
.q-meta { font-size: .8em; color: var(--muted); }
.q-text { font-size: 1.15em; font-weight: 700; }
.q-opts { display: grid; gap: 10px; }
.qo { font: inherit; text-align: left; display: flex; gap: 12px; align-items: center; padding: 12px 16px; border-radius: 14px; border: 2px solid var(--line); background: var(--bg2); color: var(--ink); cursor: pointer; transition: .15s; }
.qo span { flex: none; width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; background: var(--soft); font-weight: 900; }
.qo:hover { border-color: var(--pri); transform: translateX(4px); }
.qo.on { border-color: var(--pri); background: #ffedd5; color: #7c2d12; }
.qo.on span { background: var(--pri); color: #fff; }
.q-dots { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.qd { width: 38px; height: 38px; border-radius: 10px; border: 2px solid var(--line); background: var(--bg2); color: var(--ink); font: 700 .85em inherit; cursor: pointer; }
.qd.a { background: #dbeafe; color: #1e3a8a; } .qd.c { border-color: var(--pri); }
.q-res { text-align: center; }
.ring { --p: 0; width: 170px; height: 170px; border-radius: 50%; margin: 10px auto; display: grid; place-items: center; align-content: center; background: conic-gradient(var(--green) calc(var(--p) * 1%), var(--soft) 0); position: relative; animation: popIn .6s; }
.ring::before { content: ""; position: absolute; inset: 14px; background: var(--card); border-radius: 50%; }
.ring b, .ring small { position: relative; } .ring b { font-size: 2.6em; line-height: 1; font-weight: 900; }
.unit-bars { max-width: 560px; margin: 14px auto; text-align: left; }
.ub { display: grid; grid-template-columns: minmax(0, 1fr) 120px 44px; gap: 10px; align-items: center; margin: 6px 0; font-size: .85em; }
.rv { border-radius: 14px; padding: 10px 14px; margin: 10px 0; border-left: 6px solid; }
.rv p { margin: 4px 0; }
.rv.ok { background: rgba(16, 185, 129, .1); border-color: var(--green); } .rv.ng { background: rgba(239, 68, 68, .1); border-color: var(--red); }

/* log */
.stats { grid-template-columns: repeat(auto-fit, minmax(min(100%, 150px), 1fr)); margin-bottom: 20px; }
.stat { background: var(--card); border-radius: 20px; padding: 16px; text-align: center; box-shadow: var(--shadow); font-size: 1.6em; }
.stat b { display: block; font-size: 1.1em; font-weight: 900; color: var(--pri); }
.stat small { font-size: .5em; color: var(--muted); }
.tline { list-style: none; padding: 0; margin: 0; }
.tline li { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--line); }
.tico { flex: none; width: 40px; height: 40px; display: grid; place-items: center; background: var(--soft); border-radius: 12px; }

/* downloads */
.dls .dl { text-decoration: none; color: var(--ink); background: var(--card); border-radius: 20px; padding: 20px; text-align: center; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 4px; transition: .2s; }
.dls .dl div { font-size: 2.6em; }
.dls .dl:hover { transform: translateY(-4px); }
.thumbs { grid-template-columns: repeat(auto-fill, minmax(min(45%, 150px), 1fr)); }
.thumb { border: 0; background: var(--soft); border-radius: 14px; padding: 8px; cursor: pointer; font: inherit; color: var(--ink); }
.thumb img { width: 100%; border-radius: 8px; display: block; }
.lightbox { position: fixed; inset: 0; background: rgba(0, 0, 0, .8); display: grid; place-items: center; z-index: 90; padding: 16px; cursor: zoom-out; }
.lightbox img { max-width: 100%; max-height: 96vh; border-radius: 10px; }

/* settings */
.settings { position: fixed; inset: 0; z-index: 80; pointer-events: none; }
.settings .mask { position: absolute; inset: 0; background: rgba(0, 0, 0, .35); opacity: 0; transition: .3s; }
.settings .panel { position: absolute; right: 0; top: 0; bottom: 0; width: min(420px, 100%); background: var(--card); color: var(--ink); padding: 20px; overflow-y: auto; transform: translateX(100%); transition: transform .35s cubic-bezier(.2, .8, .2, 1); box-shadow: -10px 0 40px rgba(0, 0, 0, .2); }
.settings.open { pointer-events: auto; } .settings.open .mask { opacity: 1; } .settings.open .panel { transform: none; }
.p-head { display: flex; justify-content: space-between; align-items: center; }
.set-row { padding: 12px 0; border-bottom: 1px dashed var(--line); }
.set-l { font-weight: 900; margin-bottom: 6px; }
.set-o { display: flex; flex-wrap: wrap; gap: 6px; }
.sbtn { font: inherit; font-weight: 700; font-size: .9em; padding: 8px 14px; border-radius: 12px; border: 2px solid var(--line); background: var(--bg2); color: var(--ink); cursor: pointer; }
.sbtn.on { background: linear-gradient(135deg, var(--pri), var(--pink)); color: #fff; border-color: transparent; }

/* toast, confetti */
.toast { position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%); background: #1f2937; color: #fff; padding: 12px 22px; border-radius: 99px; z-index: 99; animation: rise .3s; font-weight: 700; }
.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 95; overflow: hidden; }
.confetti i { position: absolute; top: -20px; width: 10px; height: 16px; border-radius: 3px; animation: fall linear forwards; }

@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@keyframes popIn { 0% { opacity: 0; transform: scale(.7); } 70% { transform: scale(1.05); } 100% { opacity: 1; transform: none; } }
@keyframes float { 50% { transform: translateY(-12px); } }
@keyframes bob { 50% { transform: translateY(-6px) rotate(-4deg); } }
@keyframes swing { 50% { transform: rotate(-12deg); } }
@keyframes shake { 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }
@keyframes fall { to { transform: translateY(110vh) rotate(720deg); } }
@keyframes slidex { from { transform: translateX(-90px); } to { transform: translateX(90px); } }
@keyframes rain { from { transform: translateY(-20px); } to { transform: translateY(40px); } }
@keyframes walk { from { transform: translateX(-40px); } to { transform: translateX(60px); } }
@keyframes dash { to { stroke-dashoffset: -36; } }
@media (prefers-reduced-motion: reduce) { .logo, .float1, .float2, .float3, .rain line, .walk, .slide-x { animation: none; } }