/* ==========================================================================
   成语接龙 · 闯关
   设计基调：宣纸暖白 + 墨色 + 朱砂 + 青瓷；深色为「夜读」配色
   ========================================================================== */

:root {
    color-scheme: light;

    --bg: #f4efe4;
    --bg-deep: #e8e0ce;
    --panel: #fffdf7;
    --panel-soft: #faf5ea;
    --panel-tint: #f2ecdb;

    --ink: #1f2a2c;
    --ink-2: #4d5b5d;
    --ink-3: #7c898a;
    --line: #e2d9c6;
    --line-strong: #cbbfa3;

    --accent: #b23f2a;
    --accent-2: #cd5b3d;
    --accent-soft: #f6e0d6;
    --accent-ink: #8d2f1c;

    --jade: #2b6b5a;
    --jade-soft: #d9e9e2;
    --gold: #ab8128;
    --gold-soft: #f0e3c5;
    --azure: #2f6f9f;
    --azure-soft: #ddeaf6;

    --shadow-sm: 0 1px 2px rgba(31, 42, 44, .05), 0 10px 24px -16px rgba(31, 42, 44, .35);
    --shadow-md: 0 2px 4px rgba(31, 42, 44, .04), 0 24px 48px -28px rgba(31, 42, 44, .42);
    --shadow-lg: 0 8px 16px rgba(31, 42, 44, .06), 0 48px 96px -48px rgba(31, 42, 44, .5);

    --radius-sm: 12px;
    --radius: 18px;
    --radius-lg: 26px;

    --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
    --font-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", ui-serif, Georgia, serif;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", monospace;
}

html[data-theme="dark"] {
    color-scheme: dark;

    --bg: #0c1416;
    --bg-deep: #080f11;
    --panel: #131e20;
    --panel-soft: #172426;
    --panel-tint: #1b2a2b;

    --ink: #e9f0ec;
    --ink-2: #a8b8b3;
    --ink-3: #8a9b96;
    --line: #263535;
    --line-strong: #354847;

    --accent: #ef8a5e;
    --accent-2: #f5a87c;
    --accent-soft: #35211a;
    --accent-ink: #ffc4a4;

    --jade: #6fd2af;
    --jade-soft: #16302a;
    --gold: #e0b866;
    --gold-soft: #332a17;
    --azure: #7bb6e2;
    --azure-soft: #16293a;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 28px -18px rgba(0, 0, 0, .8);
    --shadow-md: 0 2px 6px rgba(0, 0, 0, .4), 0 28px 56px -30px rgba(0, 0, 0, .9);
    --shadow-lg: 0 10px 24px rgba(0, 0, 0, .5), 0 56px 112px -56px rgba(0, 0, 0, 1);
}

* { box-sizing: border-box; }

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.75;
    color: var(--ink);
    background-color: var(--bg);
    background-image:
        radial-gradient(900px 520px at 10% -10%, rgba(178, 63, 42, .10), transparent 62%),
        radial-gradient(760px 480px at 90% 2%, rgba(43, 107, 90, .10), transparent 60%),
        radial-gradient(circle at 1px 1px, rgba(31, 42, 44, .05) 1px, transparent 0);
    background-size: auto, auto, 22px 22px;
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

html[data-theme="dark"] body {
    background-image:
        radial-gradient(900px 520px at 10% -10%, rgba(239, 138, 94, .10), transparent 62%),
        radial-gradient(760px 480px at 90% 2%, rgba(111, 210, 175, .08), transparent 60%),
        radial-gradient(circle at 1px 1px, rgba(234, 240, 236, .05) 1px, transparent 0);
}

h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
a { color: inherit; text-decoration: none; }
svg { display: block; }
img { max-width: 100%; }

::selection { background: var(--accent-soft); color: var(--accent-ink); }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 6px;
}

html.ic-modal-open { overflow: hidden; }

.ic-sr {
    position: absolute;
    width: 1px; height: 1px;
    margin: -1px; padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

.ic-skip {
    position: fixed;
    left: 16px;
    top: -60px;
    z-index: 200;
    padding: 10px 16px;
    border-radius: 10px;
    background: var(--ink);
    color: var(--bg);
    font-size: 13px;
    transition: top .2s ease;
}
.ic-skip:focus { top: 12px; }

/* ============================ 布局 ============================ */

.ic-main {
    max-width: 1180px;
    margin: 0 auto;
    padding: 26px 18px 70px;
    display: grid;
    gap: 26px;
}

/* 接龙树要铺得开：棋盘独占整行，文案压成一条横带 */
.ic-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    align-items: start;
}

@media (min-width: 1041px) {
    .ic-hero-copy {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        column-gap: 36px;
        align-items: start;
        padding: 24px 30px 22px;
    }

    .ic-hero-copy > .ic-eyebrow { grid-column: 1; }
    .ic-hero-copy > h1 { grid-column: 1; margin: 10px 0 0; }
    .ic-hero-copy > .ic-sub { grid-column: 1; max-width: 680px; margin-top: 10px; }
    .ic-hero-copy > .ic-cta { grid-column: 1; margin-top: 16px; }
    .ic-hero-copy > .ic-points { grid-column: 1; margin-top: 14px; }
    .ic-hero-copy > .ic-total {
        grid-column: 2;
        grid-row: 1 / span 5;
        align-self: center;
        margin: 0;
        max-width: 260px;
    }
}

.ic-hero-copy {
    padding: 26px 26px 24px;
    background: linear-gradient(160deg, var(--panel) 0%, var(--panel-soft) 100%);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.ic-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12.5px;
    font-weight: 700;
    letter-spacing: .06em;
    color: var(--accent-ink);
    background: var(--accent-soft);
    border-radius: 999px;
    padding: 6px 13px;
}

.ic-eyebrow-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 4px rgba(178, 63, 42, .16);
}

.ic-hero h1 {
    margin: 14px 0 10px;
    font-family: var(--font-serif);
    font-size: clamp(30px, 4.6vw, 46px);
    line-height: 1.18;
    letter-spacing: .01em;
}

.ic-hero h1 span {
    display: inline-block;
    margin-left: 8px;
    color: var(--accent);
    position: relative;
}

.ic-hero h1 span::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -6px;
    height: 8px;
    background: linear-gradient(90deg, rgba(178, 63, 42, .28), rgba(178, 63, 42, 0));
    border-radius: 6px;
}

.ic-sub {
    color: var(--ink-2);
    font-size: 15px;
    max-width: 46ch;
}

.ic-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0 16px;
}

.ic-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 9px 16px;
    border-radius: 11px;
    border: 1px solid transparent;
    font-size: 13.5px;
    font-weight: 700;
    white-space: nowrap;
    transition: transform .15s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.ic-btn:hover { transform: translateY(-1px); }
.ic-btn:active { transform: translateY(0); }
.ic-btn-lg { padding: 12px 22px; font-size: 15px; border-radius: 13px; }
.ic-btn-sm { padding: 7px 13px; font-size: 12.5px; border-radius: 9px; }

.ic-btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
    color: #fff;
    box-shadow: 0 10px 22px -12px rgba(178, 63, 42, .8);
}
.ic-btn-primary:hover { box-shadow: 0 14px 26px -12px rgba(178, 63, 42, .9); }

.ic-btn-ghost {
    background: var(--panel);
    border-color: var(--line-strong);
    color: var(--ink);
}
.ic-btn-ghost:hover { border-color: var(--accent); color: var(--accent-ink); }

.ic-btn-quiet {
    background: transparent;
    color: var(--ink-2);
    border-color: transparent;
}
.ic-btn-quiet:hover { background: var(--panel-tint); color: var(--ink); }

.ic-btn-quiet svg { width: 17px; height: 17px; }

.ic-btn-danger {
    background: var(--accent);
    color: #fff;
}

.ic-points {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    font-size: 13px;
    color: var(--ink-2);
}
.ic-points li { position: relative; padding-left: 16px; }
.ic-points li::before {
    content: '';
    position: absolute;
    left: 0; top: 10px;
    width: 6px; height: 6px;
    border-radius: 2px;
    background: var(--jade);
    transform: rotate(45deg);
}

/* ================= 词库分级切换 ================= */
.ic-mode-switch {
    display: inline-flex;
    flex-wrap: wrap;
    padding: 4px;
    gap: 4px;
    margin-bottom: 18px;
    border-radius: 13px;
    background: var(--panel-soft);
    border: 1px solid var(--line);
    max-width: 100%;
}
.ic-mode-btn {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1px;
    padding: 7px 16px;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: var(--ink-2);
    font-family: var(--font-sans);
    font-size: 14.5px;
    font-weight: 700;
    letter-spacing: .02em;
    cursor: pointer;
    transition: background .16s ease, color .16s ease, box-shadow .16s ease;
}
.ic-mode-btn small {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0;
    color: var(--ink-3);
}
.ic-mode-btn:hover { color: var(--ink); }
.ic-mode-btn.is-on {
    background: var(--accent);
    color: #fff;
    box-shadow: var(--shadow-sm);
}
.ic-mode-btn.is-on small { color: rgba(255, 255, 255, .82); }
html[data-theme="dark"] .ic-mode-btn.is-on { color: #fff; }

.ic-total {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px dashed var(--line-strong);
}

.ic-total-stars {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 68px;
    height: 44px;
    padding: 0 12px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--gold-soft), rgba(240, 227, 197, .35));
    color: var(--gold);
    font-family: var(--font-mono);
    font-size: 22px;
    font-weight: 800;
    border: 1px solid rgba(171, 129, 40, .35);
}

.ic-total-label { font-size: 13.5px; font-weight: 700; color: var(--ink); }
.ic-total-label small { display: block; font-weight: 500; color: var(--ink-3); font-size: 12px; }

/* ============================ 棋盘卡片 ============================ */

.ic-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.ic-board-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.ic-confirm-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 18px;
}

.ic-board-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    padding: 16px 20px 12px;
}

.ic-level-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    min-width: 0;
}

.ic-tier-badge {
    font-size: 12px;
    font-weight: 800;
    padding: 4px 11px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent-ink);
    border: 1px solid rgba(178, 63, 42, .25);
}
.ic-tier-badge[data-tier="hard"] {
    background: var(--gold-soft);
    color: #7a5a12;
    border-color: rgba(171, 129, 40, .35);
}
html[data-theme="dark"] .ic-tier-badge[data-tier="hard"] { color: var(--gold); }

.ic-level-name {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 700;
}

.ic-live-stars {
    display: inline-flex;
    gap: 2px;
    color: var(--line-strong);
    font-size: 15px;
}
.ic-live-stars .is-on { color: var(--gold); }

.ic-level-rule {
    font-size: 12.5px;
    color: var(--ink-3);
}

.ic-meters { display: flex; gap: 10px; }
.ic-meter {
    min-width: 78px;
    padding: 7px 12px;
    border-radius: 11px;
    background: var(--panel-soft);
    border: 1px solid var(--line);
    text-align: center;
}
.ic-meter b {
    display: block;
    font-family: var(--font-mono);
    font-size: 16px;
    font-variant-numeric: tabular-nums;
}
.ic-meter small { font-size: 11px; color: var(--ink-3); }

.ic-progress-line {
    height: 4px;
    background: var(--panel-tint);
    overflow: hidden;
}
.ic-progress-line i {
    display: block;
    height: 100%;
    width: 0;
    border-radius: 0 4px 4px 0;
    background: linear-gradient(90deg, var(--jade), var(--gold));
    transition: width .3s ease;
}

.ic-coach {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 12px 20px 0;
    padding: 11px 13px;
    border-radius: 12px;
    background: var(--azure-soft);
    border: 1px solid rgba(47, 111, 159, .22);
    color: var(--ink-2);
    font-size: 13px;
}
.ic-coach[hidden] { display: none; }
.ic-coach-mark {
    flex: none;
    width: 20px; height: 20px;
    border-radius: 50%;
    background: var(--azure);
    color: #fff;
    font-size: 12px;
    font-weight: 800;
    display: grid;
    place-items: center;
}
.ic-coach p { flex: 1; }
.ic-coach-close {
    flex: none;
    font-size: 17px;
    line-height: 1;
    color: var(--ink-3);
    padding: 0 2px;
}
.ic-coach-close:hover { color: var(--ink); }

.ic-board-stage {
    position: relative;
    margin: 14px 16px 0;
    padding: 12px 8px;
    border-radius: var(--radius);
    background-color: var(--panel);
    background-image:
        radial-gradient(circle at 1px 1px, rgba(31, 42, 44, .07) 1px, transparent 0);
    background-size: 16px 16px;
    border: 1px solid var(--line);
    overflow-x: auto;
    overscroll-behavior-x: contain;
}

html[data-theme="dark"] .ic-board-stage {
    background-image: radial-gradient(circle at 1px 1px, rgba(233, 240, 236, .08) 1px, transparent 0);
}

.ic-svg {
    width: 100%;
    min-width: 0;
    height: auto;
    /* 小关卡节点少，按宽度铺满会放到很大；限个高，让图在框里居中 */
    max-height: min(62vh, 600px);
    display: block;
}

/* 棋盘元素 */
.ic-layer-rail {
    stroke: var(--line);
    stroke-width: 1;
    stroke-dasharray: 2 6;
    opacity: .85;
}

.ic-arrow {
    fill: none;
    stroke: var(--line-strong);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-dasharray: 5 6;
    opacity: .85;
    transition: stroke .25s ease, opacity .25s ease;
}
.ic-arrow.is-active {
    stroke: var(--accent);
    stroke-width: 2.6;
    opacity: 1;
    stroke-dasharray: none;
}
.ic-arrowhead { fill: var(--line-strong); }
.ic-arrowhead.is-on { fill: var(--accent); }

.ic-edge-dot { fill: var(--line-strong); opacity: .75; }
.ic-edge-dot.is-active { fill: var(--accent); opacity: 1; }

.ic-tile-bg {
    fill: var(--panel);
    stroke: var(--line-strong);
    stroke-width: 1.8;
    transition: stroke .2s ease, fill .2s ease;
}
/* 未完成：虚线边，一眼能看出「还没填」 */
.ic-tile.is-blank .ic-tile-bg {
    fill: var(--panel-soft);
    stroke-dasharray: 7 5;
}
/* 已完成：青瓷浅底 + 实线，鼠标悬停还能看释义 */
.ic-tile.is-done .ic-tile-bg {
    fill: var(--jade-soft);
    stroke: var(--jade);
    stroke-width: 2;
}
.ic-tile.is-done { cursor: help; }
.ic-tile.is-done:hover .ic-tile-bg {
    stroke-width: 2.8;
    filter: drop-shadow(0 4px 10px rgba(43, 107, 90, .2));
}
.ic-tile.is-active .ic-tile-bg {
    stroke: var(--accent);
    stroke-width: 3;
    stroke-dasharray: none;
    filter: drop-shadow(0 6px 14px rgba(178, 63, 42, .22));
}

.ic-cell rect {
    fill: var(--panel);
    stroke: var(--line);
    stroke-width: 1.4;
}
/* 已给出的字：浅底、浅边框，像是「印好的」 */
.ic-cell.is-shown rect { fill: var(--panel-tint); stroke: var(--line-strong); }
.ic-cell.is-filled rect { fill: var(--panel); stroke: var(--jade); stroke-width: 1.8; }
.ic-cell.is-empty rect {
    fill: var(--azure-soft);
    stroke: var(--azure);
    stroke-dasharray: 5 4;
}
.ic-cell.is-focus rect {
    stroke: var(--accent);
    stroke-width: 3;
    fill: var(--accent-soft);
    animation: icPulse 1.4s ease-in-out infinite;
}

/* 起笔成语：棋盘树的根 */
.ic-tile.is-root .ic-tile-bg {
    stroke: var(--accent);
    stroke-width: 2.8;
    filter: drop-shadow(0 6px 16px rgba(178, 63, 42, .16));
}

.ic-root-pill rect {
    fill: var(--accent);
    opacity: .95;
}
.ic-root-pill text {
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: .12em;
    fill: #fff;
    text-anchor: middle;
    dominant-baseline: central;
    user-select: none;
}

/* 合流成语：两条支流接上同一个成语 */
.ic-tile.is-merge .ic-tile-bg {
    stroke-dasharray: 9 5;
}
.ic-cell[data-t] { cursor: pointer; }
.ic-cell.is-shown { cursor: default; }

@keyframes icPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .62; }
}

.ic-char {
    font-family: var(--font-serif);
    font-size: 21px;
    font-weight: 700;
    fill: var(--ink);
    text-anchor: middle;
    dominant-baseline: central;
    pointer-events: none;
    user-select: none;
}
.ic-cell.is-filled .ic-char { fill: var(--jade); }
.ic-mark {
    font-size: 20px;
    font-weight: 700;
    fill: var(--azure);
    text-anchor: middle;
    dominant-baseline: central;
    pointer-events: none;
    user-select: none;
    opacity: .55;
}

.ic-toast {
    position: absolute;
    left: 50%;
    bottom: 16px;
    transform: translate(-50%, 12px);
    max-width: 88%;
    padding: 9px 16px;
    border-radius: 999px;
    background: rgba(31, 42, 44, .92);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    opacity: 0;
    pointer-events: none;
    transition: opacity .22s ease, transform .22s ease;
    /* 压在候选字浮层之上，别让提示被挡住 */
    z-index: 95;
}
.ic-toast.is-show { opacity: 1; transform: translate(-50%, 0); }

/* ==================== 候选字浮层（贴着空格） ==================== */

.ic-pick {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 88;
    /* 换格时滑过去，而不是瞬间跳 */
    transition: transform .2s cubic-bezier(.3, .7, .3, 1);
    will-change: transform;
}
.ic-pick[hidden] { display: none; }

.ic-pick-keys {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px;
    max-width: min(78vw, 430px);
    padding: 7px 9px;
    border-radius: 13px;
    background: var(--panel);
    border: 1px solid var(--line-strong);
    box-shadow: var(--shadow-md);
}
/* 只在浮层新出现时播一次入场，连续点字不重复闪 */
.ic-pick.is-enter .ic-pick-keys { animation: icPickIn .16s ease-out; }

/* 指向当前空格的小三角，位置跟着格子走 */
.ic-pick::after {
    content: '';
    position: absolute;
    left: var(--arrow-x, 50%);
    width: 8px;
    height: 8px;
    margin-left: -4px;
    background: var(--panel);
    border: 1px solid var(--line-strong);
    transform: rotate(45deg);
}
.ic-pick[data-dir="up"]::after { bottom: -5px; border-top: 0; border-left: 0; }
.ic-pick[data-dir="down"]::after { top: -5px; border-bottom: 0; border-right: 0; }

@keyframes icPickIn {
    from { opacity: 0; transform: translateY(4px) scale(.97); }
    to { opacity: 1; transform: none; }
}

.ic-key {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--panel);
    border: 1.5px solid var(--line-strong);
    font-family: var(--font-serif);
    font-size: 17px;
    font-weight: 700;
    color: var(--ink);
    box-shadow: none;
    transition: transform .12s ease, border-color .18s ease, background .18s ease, color .18s ease;
}
.ic-key:hover:not(:disabled) {
    transform: translateY(-2px);
    border-color: var(--accent);
    color: var(--accent-ink);
    background: var(--accent-soft);
}
.ic-key:active:not(:disabled) { transform: translateY(0); }
.ic-key.is-used {
    opacity: .3;
    cursor: default;
}

/* ============================ 工具条 ============================ */

.ic-board-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    padding: 16px 20px 20px;
}

.ic-tools { display: flex; gap: 8px; flex-wrap: wrap; }

.ic-tool {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border-radius: 11px;
    background: var(--panel-soft);
    border: 1px solid var(--line);
    font-size: 13px;
    font-weight: 700;
    color: var(--ink-2);
    transition: border-color .18s ease, color .18s ease, background .18s ease;
}
.ic-tool svg { width: 16px; height: 16px; }
.ic-tool:hover { border-color: var(--accent); color: var(--accent-ink); background: var(--panel); }
.ic-tool-icon { padding: 8px 10px; }
.ic-tool-icon .ic-off, .ic-tool-icon.is-muted .ic-on { display: none; }
.ic-tool-icon.is-muted .ic-off { display: block; }

.ic-tool-bulb { position: relative; }
.ic-tool-cost {
    font-size: 11px;
    font-weight: 800;
    color: var(--gold);
    background: var(--gold-soft);
    border-radius: 6px;
    padding: 1px 5px;
}

.ic-tip {
    flex: 1;
    min-width: 200px;
    font-size: 12.5px;
    color: var(--ink-3);
}

/* ============================ 侧栏 ============================ */

.ic-rail {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 18px;
}

.ic-rail .ic-card { padding: 18px 20px 20px; border-radius: var(--radius); }

.ic-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
}
.ic-card-head h2 {
    font-family: var(--font-serif);
    font-size: 17px;
    font-weight: 700;
}

.ic-text-btn {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--accent-ink);
    padding: 3px 4px;
    border-radius: 6px;
}
.ic-text-btn:hover { background: var(--accent-soft); }
.ic-text-danger { color: var(--accent); }

.ic-stars { display: inline-flex; gap: 2px; font-size: 15px; color: var(--line-strong); }
.ic-stars .is-on { color: var(--gold); }

.ic-facts { display: grid; gap: 8px; }
.ic-facts > div {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 12px;
    border-radius: 10px;
    background: var(--panel-soft);
    border: 1px solid var(--line);
}
.ic-facts dt { font-size: 12.5px; color: var(--ink-3); }
.ic-facts dd { font-size: 13.5px; font-weight: 700; font-family: var(--font-mono); }

.ic-card-note {
    margin-top: 12px;
    font-size: 12.5px;
    color: var(--ink-3);
    line-height: 1.7;
}

.ic-mini-grid {
    display: grid;
    grid-template-columns: repeat(10, minmax(0, 1fr));
    gap: 4px;
}
.ic-mini {
    aspect-ratio: 1;
    border-radius: 6px;
    background: var(--panel-soft);
    border: 1px solid var(--line);
    font-size: 10px;
    font-weight: 700;
    color: var(--ink-3);
    display: grid;
    place-items: center;
    transition: transform .12s ease, border-color .18s ease;
}
.ic-mini:hover:not(:disabled) { transform: translateY(-1px); border-color: var(--accent); }
.ic-mini.is-clear { background: var(--gold-soft); color: var(--gold); border-color: rgba(171, 129, 40, .3); }
.ic-mini.is-cur { border-color: var(--accent); color: var(--accent-ink); }
.ic-mini.is-locked { opacity: .45; cursor: not-allowed; }

.ic-mini-rank { display: grid; gap: 6px; }
.ic-mini-rank li {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 7px 10px;
    border-radius: 9px;
    background: var(--panel-soft);
    border: 1px solid var(--line);
    font-size: 13px;
}
.ic-mini-rank li b { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ic-mini-rank .ic-rank-no {
    flex: none;
    width: 20px; height: 20px;
    border-radius: 50%;
    background: var(--panel-tint);
    color: var(--ink-3);
    font-size: 11px;
    font-weight: 800;
    display: grid;
    place-items: center;
}
.ic-rank-score { font-family: var(--font-mono); font-weight: 800; color: var(--gold); }
.ic-rank-empty { font-size: 12.5px; color: var(--ink-3); padding: 6px 2px; }

/* ============================ 内容区 ============================ */

.ic-content {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 26px;
    align-items: start;
}

.ic-content-main {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 26px 28px 30px;
}

.ic-content-main h2 {
    font-family: var(--font-serif);
    font-size: 22px;
    margin: 26px 0 12px;
}
.ic-content-main h2:first-child { margin-top: 0; }
.ic-content-main p { color: var(--ink-2); margin-bottom: 12px; }
.ic-content-main strong { color: var(--ink); }

.ic-steps { display: grid; gap: 14px; counter-reset: step; }
.ic-steps li {
    position: relative;
    padding: 14px 16px 14px 52px;
    border-radius: var(--radius);
    background: var(--panel-soft);
    border: 1px solid var(--line);
    counter-increment: step;
}
.ic-steps li::before {
    content: counter(step);
    position: absolute;
    left: 16px; top: 14px;
    width: 24px; height: 24px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-size: 12.5px;
    font-weight: 800;
    display: grid;
    place-items: center;
}
.ic-steps b { display: block; margin-bottom: 4px; }
.ic-steps p { margin: 0; font-size: 13.5px; }

.ic-quote-list { display: grid; gap: 8px; margin: 12px 0; }
.ic-quote-list li {
    padding: 10px 14px;
    border-left: 3px solid var(--jade);
    border-radius: 0 10px 10px 0;
    background: var(--panel-soft);
    font-size: 13.5px;
}

.ic-tier-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin-top: 14px;
}
.ic-tier-cards article {
    padding: 16px 18px;
    border-radius: var(--radius);
    background: var(--panel-soft);
    border: 1px solid var(--line);
}
.ic-tier-cards b { display: block; margin: 8px 0 6px; font-size: 16px; }
.ic-tier-cards p { font-size: 13px; margin: 0; }
.ic-tier-chip {
    display: inline-block;
    font-size: 11.5px;
    font-weight: 800;
    padding: 3px 10px;
    border-radius: 999px;
    background: var(--gold-soft);
    color: #7a5a12;
    border: 1px solid rgba(171, 129, 40, .3);
}
html[data-theme="dark"] .ic-tier-chip { color: var(--gold); }

.ic-faq { display: grid; gap: 10px; }
.ic-faq details {
    border-radius: var(--radius);
    background: var(--panel-soft);
    border: 1px solid var(--line);
    padding: 12px 16px;
}
.ic-faq summary {
    cursor: pointer;
    font-weight: 700;
    font-size: 14px;
    list-style: none;
    position: relative;
    padding-right: 24px;
}
.ic-faq summary::-webkit-details-marker { display: none; }
.ic-faq summary::after {
    content: '+';
    position: absolute;
    right: 0; top: 0;
    color: var(--accent);
    font-weight: 800;
}
.ic-faq details[open] summary::after { content: '−'; }
.ic-faq details p { margin: 10px 0 0; font-size: 13.5px; }

.ic-content-side {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 20px 22px 22px;
}
.ic-content-side h2 {
    font-family: var(--font-serif);
    font-size: 17px;
    margin-bottom: 12px;
}
.ic-rel { display: grid; gap: 8px; }
.ic-rel a {
    display: block;
    padding: 10px 12px;
    border-radius: 11px;
    background: var(--panel-soft);
    border: 1px solid var(--line);
    transition: border-color .18s ease, transform .15s ease;
}
.ic-rel a:hover { border-color: var(--accent); transform: translateX(2px); }
.ic-rel b { display: block; font-size: 13.5px; }
.ic-rel small { color: var(--ink-3); font-size: 12px; }

.ic-side-note {
    margin-top: 16px;
    padding: 12px 14px;
    border-radius: 12px;
    background: var(--azure-soft);
    border: 1px solid rgba(47, 111, 159, .2);
    font-size: 12.5px;
    color: var(--ink-2);
}
.ic-side-note b { display: block; margin-bottom: 4px; color: var(--ink); }

/* ============================ 弹窗 ============================ */

.ic-modal {
    position: fixed;
    inset: 0;
    z-index: 120;
    display: grid;
    place-items: center;
    padding: 18px;
}
.ic-modal[hidden] { display: none; }

.ic-modal-mask {
    position: absolute;
    inset: 0;
    background: rgba(24, 32, 34, .55);
    backdrop-filter: blur(3px);
}

.ic-dialog {
    position: relative;
    width: min(560px, 100%);
    max-height: min(86vh, 860px);
    overflow: auto;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 22px 24px 24px;
    animation: icPop .22s ease;
}
.ic-dialog-wide { width: min(760px, 100%); }
.ic-dialog-sm { width: min(420px, 100%); }
.ic-dialog-how { width: min(640px, 100%); }
.ic-dialog-win { width: min(480px, 100%); text-align: center; }

@keyframes icPop {
    from { opacity: 0; transform: translateY(12px) scale(.98); }
    to { opacity: 1; transform: none; }
}

.ic-dialog-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
}
.ic-dialog-head h2 {
    font-family: var(--font-serif);
    font-size: 20px;
}
.ic-dialog-head p { font-size: 12.5px; color: var(--ink-3); margin-top: 4px; }

.ic-close {
    flex: none;
    width: 32px; height: 32px;
    border-radius: 9px;
    display: grid;
    place-items: center;
    color: var(--ink-3);
    border: 1px solid transparent;
}
.ic-close:hover { background: var(--panel-tint); color: var(--ink); }
.ic-close svg { width: 18px; height: 18px; }
.ic-close-abs { position: absolute; right: 16px; top: 16px; }

.ic-map-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}
.ic-map-legend {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    font-size: 12px;
    color: var(--ink-3);
    margin-bottom: 12px;
}
.ic-lg-item { display: inline-flex; align-items: center; gap: 6px; }
.ic-lg-stars { color: var(--gold); font-style: normal; }
.ic-lg-dash, .lg-dash { width: 12px; height: 12px; border-radius: 4px; border: 1px dashed var(--line-strong); }
.ic-lg-cur { width: 12px; height: 12px; border-radius: 4px; border: 2px solid var(--accent); }

.ic-level-grid {
    display: grid;
    grid-template-columns: repeat(10, minmax(0, 1fr));
    gap: 7px;
}
.ic-map-cell {
    aspect-ratio: 1;
    border-radius: 9px;
    background: var(--panel-soft);
    border: 1px solid var(--line);
    display: grid;
    place-items: center;
    gap: 0;
    line-height: 1.15;
    transition: transform .12s ease, border-color .18s ease;
}
.ic-map-cell b { font-size: 12.5px; font-weight: 800; }
.ic-map-cell small { font-size: 8.5px; color: var(--ink-3); }
.ic-map-cell:hover:not(:disabled) { transform: translateY(-2px); border-color: var(--accent); }
.ic-map-cell.is-clear { background: var(--gold-soft); border-color: rgba(171, 129, 40, .35); }
.ic-map-cell.is-clear small { color: var(--gold); }
.ic-map-cell.is-cur { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.ic-map-cell.is-locked { opacity: .42; cursor: not-allowed; }

.ic-dialog-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px dashed var(--line-strong);
    font-size: 12.5px;
    color: var(--ink-3);
}
.ic-dialog-foot b { color: var(--ink); }

/* 玩法说明 */
.ic-how-steps { display: grid; gap: 12px; }
.ic-how-steps li {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) 96px;
    gap: 14px;
    align-items: center;
    padding: 14px 16px;
    border-radius: var(--radius);
    background: var(--panel-soft);
    border: 1px solid var(--line);
}
.ic-how-no {
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-size: 13px;
    font-weight: 800;
    display: grid;
    place-items: center;
}
.ic-how-body b { display: block; margin-bottom: 3px; }
.ic-how-body p { font-size: 13px; color: var(--ink-2); margin: 0; }
.ic-how-demo { width: 96px; height: 62px; }
.ic-how-demo .d { stroke: var(--line-strong); stroke-width: 2.5; stroke-dasharray: 5 4; }
.ic-how-demo .used { stroke: var(--jade); stroke-width: 2.5; }
.ic-how-demo circle { fill: var(--panel); stroke: var(--line-strong); stroke-width: 2.5; }
.ic-how-demo circle.odd { stroke: var(--accent); }
.ic-how-demo circle.done { fill: var(--jade-soft); stroke: var(--jade); }
.ic-how-demo circle.cur { fill: var(--accent-soft); stroke: var(--accent); }

.ic-how-tips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    margin-top: 14px;
    font-size: 12.5px;
    color: var(--ink-2);
}
.ic-how-tips b { color: var(--ink); }

.ic-how-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px dashed var(--line-strong);
}
.ic-how-mute { display: inline-flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--ink-3); }
.ic-how-actions { display: flex; gap: 10px; }

/* 排行榜 */
.ic-rank-top {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}
.ic-tabs { display: inline-flex; gap: 4px; padding: 3px; border-radius: 10px; background: var(--panel-tint); }
.ic-tab {
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--ink-3);
}
.ic-tab.is-on { background: var(--panel); color: var(--ink); box-shadow: var(--shadow-sm); }

.ic-name-field {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 180px;
    font-size: 12.5px;
    color: var(--ink-3);
}
.ic-name-field input {
    flex: 1;
    min-width: 120px;
    padding: 8px 12px;
    border-radius: 10px;
    border: 1px solid var(--line-strong);
    background: var(--panel);
    font-size: 13px;
}
.ic-name-field input:focus { border-color: var(--accent); outline: none; }

.ic-rank-list { display: grid; gap: 6px; }
.ic-rank-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: 11px;
    background: var(--panel-soft);
    border: 1px solid var(--line);
    font-size: 13.5px;
}
.ic-rank-row.top1 { background: var(--gold-soft); }
.ic-rank-row.is-me { border-color: var(--accent); }
.ic-rank-no {
    flex: none;
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--panel-tint);
    color: var(--ink-3);
    font-size: 12px;
    font-weight: 800;
    display: grid;
    place-items: center;
}
.ic-rank-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 700; }
.ic-rank-meta { flex: none; font-size: 11.5px; color: var(--ink-3); }
.ic-rank-mine {
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: 11px;
    background: var(--accent-soft);
    color: var(--accent-ink);
    font-size: 13px;
}
.ic-rank-mine[hidden] { display: none; }
.ic-rank-empty { padding: 18px 4px; font-size: 13px; color: var(--ink-3); text-align: center; }

/* 结算 */
.ic-win-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12.5px;
    color: var(--ink-3);
}
.ic-win-record {
    font-size: 11px;
    font-weight: 800;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--accent);
    color: #fff;
}
.ic-win-record[hidden] { display: none; }
.ic-dialog-win h2 {
    font-family: var(--font-serif);
    font-size: 28px;
    margin: 10px 0 14px;
}
.ic-win-stars { display: inline-flex; gap: 8px; font-size: 34px; color: var(--line-strong); }
.ic-win-stars .is-on { color: var(--gold); }
.ic-win-note { font-size: 13px; color: var(--ink-2); margin-top: 10px; }
.ic-win-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin: 18px 0;
}
.ic-win-stats > div {
    padding: 10px 8px;
    border-radius: 12px;
    background: var(--panel-soft);
    border: 1px solid var(--line);
}
.ic-win-stats b { display: block; font-family: var(--font-mono); font-size: 18px; }
.ic-win-stats small { font-size: 11.5px; color: var(--ink-3); }
.ic-win-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.ic-win-share-row { margin-top: 14px; font-size: 12.5px; color: var(--ink-3); }
.ic-win-share {
    color: var(--accent-ink);
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 3px;
}
.ic-win-sync { margin-top: 6px; font-size: 12px; color: var(--ink-3); min-height: 18px; }
.ic-win-confetti { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.ic-win-confetti i {
    position: absolute;
    width: 8px; height: 12px;
    border-radius: 2px;
    opacity: .85;
    animation: icFall 2.6s linear infinite;
}
@keyframes icFall {
    from { transform: translateY(-20px) rotate(0deg); opacity: .9; }
    to { transform: translateY(320px) rotate(540deg); opacity: 0; }
}

/* ============================ 响应式 ============================ */

@media (max-width: 1040px) {
    .ic-content { grid-template-columns: minmax(0, 1fr); }
    .ic-content-side { order: -1; }
}

@media (max-width: 900px) {
    /* 窄屏棋盘改为横向滑动，保证字看得清 */
    .ic-svg { min-width: 560px; }
}

@media (max-width: 640px) {
    .ic-main { padding: 16px 12px 50px; gap: 18px; }
    .ic-hero-copy { padding: 20px 18px; }
    .ic-board-head { padding: 14px 16px 10px; }
    .ic-board-stage { margin: 12px 10px 0; padding: 10px 6px; }
    .ic-board-foot { padding: 14px 16px 18px; }
    .ic-content-main { padding: 20px 18px 24px; }
    .ic-level-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
    .ic-how-steps li { grid-template-columns: auto minmax(0, 1fr); }
    .ic-how-demo { display: none; }
    .ic-win-stats { grid-template-columns: repeat(3, 1fr); gap: 6px; }
    .ic-pick-keys { gap: 5px; padding: 6px 7px; max-width: calc(100vw - 28px); }
    .ic-key { width: 32px; height: 32px; border-radius: 9px; font-size: 16px; }
}

@media (max-width: 420px) {
    .ic-mini-grid { grid-template-columns: repeat(10, minmax(0, 1fr)); gap: 3px; }
    .ic-mini { font-size: 9px; }
}

/* ==========================================================================
   成语释义弹层
   ========================================================================== */

.ic-gloss {
    position: fixed;
    z-index: 90;
    display: flex;
    flex-direction: column;
    width: 332px;
    max-width: calc(100vw - 24px);
    max-height: min(66vh, 470px);
    padding: 13px 16px 12px;
    border-radius: 14px;
    background: var(--panel);
    border: 1px solid var(--line-strong);
    box-shadow: var(--shadow-md);
    text-align: left;
    animation: icGlossIn .16s ease-out;
}

.ic-gloss[hidden] { display: none; }

@keyframes icGlossIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 小三角：贴在下面的时候指向下 */
.ic-gloss::after {
    content: '';
    position: absolute;
    left: var(--arrow-x, 50%);
    width: 10px; height: 10px;
    background: var(--panel);
    border-right: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    transform: translate(-50%, 50%) rotate(45deg);
}
.ic-gloss[data-place="top"]::after { bottom: 0; }
.ic-gloss[data-place="bottom"]::after {
    top: 0;
    border: 0;
    border-left: 1px solid var(--line-strong);
    border-top: 1px solid var(--line-strong);
    transform: translate(-50%, -50%) rotate(45deg);
}

.ic-gloss-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}
.ic-gloss-head b {
    font-family: var(--font-serif);
    font-size: 20px;
    letter-spacing: .18em;
    color: var(--ink);
}
.ic-gloss-tag {
    flex: none;
    padding: 1px 7px;
    border-radius: 999px;
    background: var(--jade-soft);
    color: var(--jade);
    font-size: 10.5px;
    letter-spacing: .06em;
}
.ic-gloss-x {
    margin-left: auto;
    font-size: 17px;
    line-height: 1;
    color: var(--ink-3);
    padding: 0 2px;
}
.ic-gloss-x:hover { color: var(--ink); }

/* 释义 / 用法 / 例句 / 延伸：标签 + 内容两栏，缺内容整行收起 */
.ic-gloss-body {
    margin: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.ic-gloss-row {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 8px;
    padding: 7px 0;
    border-top: 1px dashed var(--line);
}
.ic-gloss-row:first-child { border-top: 0; padding-top: 4px; }
.ic-gloss-row[hidden] { display: none; }

.ic-gloss-row dt {
    padding-top: 2px;
    font-size: 11.5px;
    color: var(--ink-3);
    letter-spacing: .06em;
}
.ic-gloss-row dd {
    margin: 0;
    font-size: 13.2px;
    line-height: 1.78;
    color: var(--ink);
}

/* 例句单独成块，读起来像摘抄 */
.ic-gloss-row-ex {
    margin: 5px 0;
    padding: 8px 10px 9px;
    border: 0;
    border-radius: 10px;
    background: var(--panel-soft);
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 6px;
}
.ic-gloss-row-ex dt { padding-top: 1px; color: var(--ink-3); }
.ic-gloss-row-ex dd {
    font-size: 12.9px;
    line-height: 1.72;
    color: var(--ink-2);
}
/* 例句里的成语本身挑出来，一眼看到用法落在哪儿 */
.ic-gloss-hit {
    font-weight: 700;
    color: var(--accent-ink);
    background: linear-gradient(180deg, transparent 58%, var(--accent-soft) 58%);
    padding: 0 1px;
}

#icGlossRowNote dd {
    font-size: 12.4px;
    color: var(--ink-2);
}

.ic-gloss-chain {
    flex: none;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 5px 6px;
    margin: 8px 0 0;
    padding-top: 9px;
    border-top: 1px dashed var(--line);
    font-size: 12px;
    color: var(--ink-2);
}
.ic-gloss-k {
    color: var(--ink-3);
    font-size: 11px;
}
.ic-gloss-chain b {
    display: inline-grid;
    place-items: center;
    min-width: 22px;
    height: 22px;
    padding: 0 3px;
    border-radius: 7px;
    background: var(--panel-tint);
    color: var(--ink);
    font-family: var(--font-serif);
    font-size: 14px;
}
.ic-gloss-chain i {
    font-style: normal;
    color: var(--ink-2);
    letter-spacing: .04em;
}

/* ==========================================================================
   资料分栏（简介 / 玩法 / 更新 / 问答 / 留言）
   ========================================================================== */

.ic-detail {
    display: block;
}

.ic-dtabs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 22px;
    padding: 0 4px;
    margin-bottom: 14px;
    border-bottom: 1px solid var(--line);
}

.ic-dtab {
    position: relative;
    padding: 10px 2px 12px;
    font-size: 14.4px;
    font-weight: 600;
    color: var(--ink-3);
    background: none;
    border: 0;
    cursor: pointer;
    transition: color .18s ease;
}
.ic-dtab:hover { color: var(--ink-2); }
.ic-dtab.is-on { color: var(--ink); }
.ic-dtab.is-on::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -1px;
    height: 3px;
    border-radius: 3px 3px 0 0;
    background: var(--accent);
}

.ic-dpanel { display: none; }
.ic-dpanel.is-on { display: block; }

.ic-dcard {
    padding: 26px 30px 28px;
    border-radius: var(--radius);
    background: var(--panel);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
}
.ic-dcard + .ic-dcard { margin-top: 14px; }

.ic-dcard > h2 {
    margin: 0 0 12px;
    font-size: 18px;
    letter-spacing: .01em;
    color: var(--ink);
}
.ic-dcard > h2:not(:first-child) { margin-top: 22px; }
.ic-dcard > h3 {
    margin: 20px 0 10px;
    font-size: 15.4px;
    color: var(--ink);
}
.ic-dcard > p {
    margin: 0 0 12px;
    font-size: 14px;
    line-height: 1.95;
    color: var(--ink-2);
}
.ic-dcard > p:last-child { margin-bottom: 0; }

/* 段落里被强调的关键词：淡蓝底 + 虚线下划线，不抢正文 */
.ic-kw {
    font-weight: 600;
    color: var(--ink);
    background: linear-gradient(180deg, transparent 62%, var(--azure-soft) 62%);
    padding: 0 1px;
}

.ic-changelog {
    list-style: none;
    margin: 0;
    padding: 0;
}
.ic-changelog li {
    display: grid;
    grid-template-columns: 56px 92px minmax(0, 1fr);
    gap: 10px;
    padding: 11px 0;
    border-top: 1px dashed var(--line);
    font-size: 13.6px;
    line-height: 1.8;
    color: var(--ink-2);
}
.ic-changelog li:first-child { border-top: 0; padding-top: 2px; }
.ic-vlog-ver {
    align-self: start;
    padding: 1px 7px;
    border-radius: 6px;
    background: var(--accent-soft);
    color: var(--accent-ink);
    font-size: 12px;
    font-weight: 700;
    text-align: center;
}
.ic-vlog-date {
    color: var(--ink-3);
    font-family: var(--font-mono);
    font-size: 12.4px;
}

/* 相关游戏与工具 */
.ic-related {
    margin-top: 26px;
}
.ic-related h2 {
    margin: 0 0 12px;
    font-size: 17px;
    color: var(--ink);
}

.ic-rel-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}

.ic-rel-item {
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 13px 14px;
    border-radius: 14px;
    background: var(--panel);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.ic-rel-item:hover {
    transform: translateY(-2px);
    border-color: var(--line-strong);
    box-shadow: var(--shadow-md);
}

.ic-rel-icon {
    flex: none;
    width: 38px; height: 38px;
    display: grid;
    place-items: center;
    border-radius: 11px;
    font-family: var(--font-serif);
    font-size: 19px;
    font-weight: 700;
    color: #fff;
}
.ic-rel-icon.t-one { background: linear-gradient(135deg, #b23f2a, #cd5b3d); }
.ic-rel-icon.t-maze { background: linear-gradient(135deg, #2b6b5a, #3f8a72); }
.ic-rel-icon.t-relay { background: linear-gradient(135deg, #2f6f9f, #4b8bbd); }
.ic-rel-icon.t-dict { background: linear-gradient(135deg, #ab8128, #c9a04a); }

.ic-rel-body {
    min-width: 0;
    display: grid;
    gap: 3px;
}
.ic-rel-body b {
    font-size: 13.8px;
    color: var(--ink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.ic-rel-body small {
    font-size: 11.8px;
    color: var(--ink-3);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.ic-rel-go {
    margin-left: auto;
    flex: none;
    color: var(--ink-3);
    font-size: 14px;
    transition: transform .18s ease, color .18s ease;
}
.ic-rel-item:hover .ic-rel-go {
    color: var(--accent);
    transform: translateX(2px);
}

@media (max-width: 900px) {
    .ic-rel-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .ic-dcard { padding: 22px 20px 24px; }
}

@media (max-width: 640px) {
    .ic-dtabs { gap: 2px 16px; overflow-x: auto; }
    .ic-dtab { font-size: 13.6px; white-space: nowrap; }
    .ic-changelog li { grid-template-columns: 52px minmax(0, 1fr); gap: 6px 10px; }
    .ic-vlog-date { grid-column: 2; font-size: 11.8px; }
    .ic-vlog-txt { grid-column: 1 / -1; }
    .ic-gloss { width: min(336px, calc(100vw - 20px)); max-height: min(64vh, 420px); }
}