:root {
    --bg: #e8ecf0;
    --surface: #f7f9fb;
    --card: #fff;
    --ink: #0f1b2d;
    --muted: #5a6779;
    --line: #cdd5de;
    --bar: #0f1b2d;
    --bar-ink: #f2f5f8;
    --accent: #ff5a36;
    --accent-ink: #0f1b2d;
    --good: #1f9d6b;
    --bad: #d1403a;
    --b0: #cdd5de;
    --b1: #d1403a;
    --b2: #e8833a;
    --b3: #e0b43a;
    --b4: #6bbf8a;
    --b5: #1f9d6b;
    --d: "Barlow Condensed", "Arial Narrow", system-ui, sans-serif;
    --b: "Barlow", system-ui, -apple-system, "Segoe UI", sans-serif;
    color-scheme: light
}

@media (prefers-color-scheme:dark) {
    :root {
        --bg: #0b121c;
        --surface: #101a28;
        --card: #172334;
        --ink: #e6edf5;
        --muted: #93a1b3;
        --line: #263449;
        --bar: #070c14;
        --accent: #ff7a59;
        --b0: #263449;
        --good: #3ecf93;
        --bad: #f07068;
        color-scheme: dark
    }
}

* {
    box-sizing: border-box
}

[hidden] {
    display: none !important
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font: 16px/1.5 var(--b)
}

button {
    font-family: inherit;
    cursor: pointer
}

:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px
}

.top {
    background: var(--bar);
    color: var(--bar-ink);
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 10px 20px;
    position: sticky;
    top: 0;
    z-index: 5
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: inherit;
    text-decoration: none
}

.brand b {
    display: block;
    font: 700 1.35rem/1 var(--d);
    letter-spacing: .02em
}

.brand small {
    color: #9fb0c4;
    font-size: .78rem
}

.nav {
    display: flex;
    gap: 4px;
    margin-left: 8px;
    flex: 1
}

.nav a {
    display: flex;
    align-items: center;
    gap: 7px;
    color: #9fb0c4;
    text-decoration: none;
    font-weight: 600;
    padding: 8px 14px;
    border-bottom: 3px solid transparent
}

.nav a svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round
}

.nav a[aria-current=page] {
    color: #fff;
    border-bottom-color: var(--accent)
}

.chip-streak {
    font: 700 1.05rem var(--d);
    background: #1b2a42;
    border-radius: 999px;
    padding: 4px 14px;
    white-space: nowrap
}

main {
    max-width: 1040px;
    margin: 0 auto;
    padding: 24px 16px 96px
}

.h {
    font: 700 2rem/1.1 var(--d);
    margin: 0 0 4px
}

.sub {
    color: var(--muted);
    margin: 0 0 18px
}

.hero {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    background: var(--bar);
    color: var(--bar-ink);
    border-radius: 16px;
    padding: 22px 26px
}

.hero .kick {
    margin: 0;
    color: var(--accent);
    font: 700 1rem var(--d);
    letter-spacing: .06em
}

.hero h2 {
    margin: 0;
    font: 700 2.6rem/1 var(--d)
}

.hero p {
    margin: 6px 0 0;
    color: #b8c5d6;
    max-width: 48ch
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 14px 0 26px
}

.stat {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 14px 18px
}

.stat b {
    display: block;
    font: 700 2.2rem/1 var(--d)
}

.stat span {
    color: var(--muted);
    font-size: .9rem
}

.tiles {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px
}

.tile {
    text-align: left;
    background: var(--card);
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 4px
}

.tile:hover {
    border-color: var(--accent)
}

.tile b {
    font: 700 1.3rem/1.1 var(--d)
}

.tile span {
    color: var(--muted);
    font-size: .86rem
}

.seg {
    display: flex;
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    margin-top: 8px;
    background: var(--b0)
}

.seg u {
    display: block
}

.b0 {
    background: var(--b0)
}

.b1 {
    background: var(--b1)
}

.b2 {
    background: var(--b2)
}

.b3 {
    background: var(--b3)
}

.b4 {
    background: var(--b4)
}

.b5 {
    background: var(--b5)
}

.btn {
    font: 700 1rem var(--b);
    border: 2px solid var(--ink);
    background: transparent;
    color: var(--ink);
    border-radius: 10px;
    padding: 10px 20px
}

.btn.go {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-ink)
}

.btn.miss {
    border-color: var(--bad);
    color: var(--bad)
}

.btn.hit {
    background: var(--good);
    border-color: var(--good);
    color: #fff
}

.hero .btn.go {
    font-size: 1.05rem
}

.opts {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 12px;
    margin: 14px 0
}

.opt {
    text-align: left;
    background: var(--card);
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 16px
}

.opt b {
    display: block;
    font: 700 1.25rem var(--d)
}

.opt span {
    color: var(--muted);
    font-size: .9rem
}

.opt:hover {
    border-color: var(--accent)
}

.row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
    margin: 10px 0
}

.tg {
    font: 600 .9rem var(--b);
    border: 1px solid var(--line);
    background: var(--card);
    color: var(--ink);
    border-radius: 999px;
    padding: 6px 14px
}

.tg[aria-pressed=true] {
    background: var(--ink);
    color: var(--bg);
    border-color: var(--ink)
}

.prog {
    height: 6px;
    background: var(--line);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 16px
}

.prog i {
    display: block;
    height: 100%;
    background: var(--accent)
}

.flip {
    display: grid;
    perspective: 1400px;
    cursor: pointer;
    margin-bottom: 16px
}

.face {
    grid-area: 1/1;
    min-height: 300px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: 0 10px 30px rgba(15, 27, 45, .12);
    padding: 54px 26px 26px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    text-align: center;
    backface-visibility: hidden;
    transition: transform .45s
}

.back {
    transform: rotateY(180deg)
}

.flip.on .front {
    transform: rotateY(-180deg)
}

.flip.on .back {
    transform: rotateY(0)
}

.tag {
    position: absolute;
    top: 18px;
    left: 26px;
    right: 26px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    color: var(--muted);
    font-size: .85rem;
    font-weight: 600
}

.ft {
    font: 700 1.7rem/1.25 var(--d);
    margin: 0;
    white-space: pre-line;
    max-width: 36ch
}

.ft.zh {
    font-size: 2.2rem
}

.acts {
    display: flex;
    gap: 10px;
    justify-content: center
}

.shots {
    display: flex;
    gap: 16px;
    justify-content: center;
    align-items: flex-end;
    flex-wrap: wrap
}

.shot {
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px
}

.shot figcaption {
    font-size: .8rem;
    font-weight: 600;
    color: var(--muted)
}

.pic {
    display: block;
    height: 150px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: var(--soft);
    padding: 4px
}

.done {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 28px;
    text-align: center
}

.done b {
    font: 700 3rem/1 var(--d);
    display: block
}

.list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 10px
}

.ritem {
    text-align: left;
    background: var(--card);
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px 14px;
    font: 700 1.05rem var(--b);
    display: flex;
    flex-direction: column
}

.ritem span {
    font-weight: 500;
    font-size: .85rem;
    color: var(--muted)
}

.ritem:hover {
    border-color: var(--accent)
}

.lines {
    display: grid;
    gap: 5px;
    margin: 14px 0
}

.ln {
    margin: 0;
    padding: 8px 12px;
    border-radius: 8px;
    background: var(--card);
    border: 1px solid var(--line)
}

.ln.hide {
    background: repeating-linear-gradient(135deg, var(--surface) 0 6px, var(--line) 6px 7px);
    color: transparent;
    cursor: pointer;
    user-select: none
}

.ln.hint {
    color: var(--muted);
    letter-spacing: .06em;
    cursor: pointer
}

.ln.head {
    background: none;
    border: 0;
    font: 700 1.05rem var(--d);
    color: var(--accent);
    padding-bottom: 0
}

.tw {
    overflow-x: auto;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 14px
}

table {
    border-collapse: collapse;
    width: 100%
}

th,
td {
    text-align: left;
    padding: 12px 14px;
    border-bottom: 1px solid var(--line);
    vertical-align: top
}

th {
    font: 700 .95rem var(--d);
    letter-spacing: .05em;
    color: var(--muted)
}

tr.now td {
    background: var(--surface);
    font-weight: 600
}

tr:last-child td {
    border-bottom: 0
}

.note {
    background: var(--card);
    border-left: 5px solid var(--accent);
    border-radius: 10px;
    padding: 14px 18px;
    margin: 0 0 16px
}

@media (max-width:760px) {
    .top {
        padding: 10px 14px;
        gap: 10px
    }

    .brand small {
        display: none
    }

    .chip-streak {
        margin-left: auto
    }

    .nav {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        margin: 0;
        background: var(--bar);
        justify-content: space-around;
        padding: 6px 6px calc(6px + env(safe-area-inset-bottom, 0px));
        border-top: 1px solid #1b2a42;
        gap: 0
    }

    .nav a {
        flex-direction: column;
        gap: 2px;
        font-size: .75rem;
        padding: 6px 10px;
        border-bottom: 0;
        border-top: 3px solid transparent
    }

    .nav a[aria-current=page] {
        border-top-color: var(--accent)
    }

    .stats {
        grid-template-columns: 1fr 1fr 1fr
    }

    .stat {
        padding: 10px 12px
    }

    .stat b {
        font-size: 1.7rem
    }

    .hero h2 {
        font-size: 2.1rem
    }

    .pic {
        height: 120px
    }

    .face {
        min-height: 260px;
        padding: 48px 18px 18px
    }

    .tag {
        top: 14px;
        left: 18px;
        right: 18px
    }

    .ft {
        font-size: 1.45rem
    }
}

@media (prefers-reduced-motion:reduce) {
    * {
        transition: none !important
    }

    html {
        scroll-behavior: auto
    }
}

html {
    scroll-behavior: smooth
}

body {
    min-width: 320px;
    -webkit-font-smoothing: antialiased
}

button {
    -webkit-tap-highlight-color: transparent
}

button:disabled {
    opacity: .45;
    cursor: not-allowed
}

@media (max-width:480px) {
    main {
        padding: 16px 12px 96px
    }

    .hero {
        padding: 18px
    }

    .face {
        padding: 46px 16px 16px
    }

    .tag {
        left: 16px;
        right: 16px
    }

    .btn {
        padding: 9px 14px;
        font-size: .95rem
    }

    .acts {
        flex-wrap: wrap
    }
}

.qcard {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 22px;
    margin: 14px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center
}

.ans {
    text-align: left;
    font: 600 1rem var(--b);
    background: var(--card);
    color: var(--ink);
    border: 1px solid var(--line);
    border-left: 5px solid var(--line);
    border-radius: 12px;
    padding: 13px 15px;
    white-space: pre-line
}

.ans:hover {
    border-color: var(--accent)
}

.ans.sel {
    border-color: var(--ink);
    background: var(--surface)
}

.ans.right {
    border-color: var(--good);
    background: color-mix(in srgb, var(--good) 16%, var(--card))
}

.ans.wrong {
    border-color: var(--bad);
    background: color-mix(in srgb, var(--bad) 16%, var(--card))
}

.timer {
    font: 700 1.6rem var(--d);
    background: var(--bar);
    color: var(--bar-ink);
    border-radius: 999px;
    padding: 2px 16px;
    min-width: 76px;
    text-align: center
}

.qnav {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 10px 0
}

.qnav button {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: var(--card);
    color: var(--ink);
    font-weight: 700
}

.qnav .filled {
    background: var(--ink);
    color: var(--bg);
    border-color: var(--ink)
}

.qnav .cur {
    outline: 3px solid var(--accent);
    outline-offset: 1px
}

.rows {
    display: grid;
    gap: 8px
}

.miss-item {
    background: var(--card);
    border: 1px solid var(--line);
    border-left: 5px solid var(--bad);
    border-radius: 10px;
    padding: 10px 14px
}

.miss-item p {
    margin: 4px 0 0;
    color: var(--muted)
}

.opts:has(.ans) {
    grid-template-columns: 1fr
}