/* ----
# CARRiER WAVE. 载波
# 短篇辑独立页面样式：目录页 .cw-index / 阅读页 .cw-reader
---- */

:root {
    --bg: #16181D;
    --ink: #E4E4E0;
    --ink-body: #C6C7C5;
    --ink-soft: #9A9DA5;
    --ink-faint: #62656D;
    --hair: #2C2F36;
    color-scheme: dark;
    --tint: #B7C4D4;

    --latin: "Cormorant Garamond", "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
    --cjk: "Noto Serif SC", "Source Han Serif SC", "Source Han Serif CN", "Songti SC", "STSong", serif;

    --ease-out: cubic-bezier(.22, 1, .36, 1);
    --spring: cubic-bezier(.34, 1.36, .64, 1);
    --spring-bouncy: cubic-bezier(.34, 1.56, .64, 1);
}

@supports (transition-timing-function: linear(0, 1)) {
    :root {
        /* 阻尼弹簧采样：约 4% 过冲 */
        --spring: linear(0, 0.0331, 0.1153, 0.2256, 0.3479, 0.4706, 0.5861, 0.6895, 0.7783, 0.8519, 0.9106,
            0.9556, 0.9887, 1.0117, 1.0264, 1.0347, 1.0381, 1.038, 1.0356, 1.0318, 1.0272, 1.0225, 1.0179,
            1.0137, 1.01, 1.0069, 1.0044, 1.0024, 1.001, 0.9999, 0.9992, 0.9988, 0.9986, 0.9985, 0.9986,
            0.9987, 0.9989, 0.9991, 0.9994, 0.9997, 1);
        /* 约 9% 过冲，用于小元素 */
        --spring-bouncy: linear(0, 0.0398, 0.1395, 0.2737, 0.4218, 0.5685, 0.7032, 0.8194, 0.9141, 0.9866,
            1.0382, 1.0713, 1.089, 1.0947, 1.0916, 1.0826, 1.0701, 1.0561, 1.0421, 1.0292, 1.018, 1.0089,
            1.0018, 0.9967, 0.9935, 0.9917, 0.991, 0.9913, 0.9921, 0.9932, 0.9946, 0.9959, 0.9971, 0.9982,
            0.9991, 0.9998, 1.0003, 1.0006, 1.0006, 1.0003, 1);
    }
}

@view-transition { navigation: auto; }

*, *::before, *::after { box-sizing: border-box; }

html {
    background: var(--bg);
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--hair) transparent;
    /* 始终预留滚动条位置：新页首帧可能在正文解析完之前就渲染，那时页面还不够长、没有滚动条，
       视口比旧页宽，Chrome 会以 "Viewport size changed" 放弃整个跨页面过渡 */
    scrollbar-gutter: stable;
}

body.cw {
    margin: 0;
    min-height: 100vh;
    color: var(--ink);
    font-family: var(--cjk);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    background: var(--cw-backdrop);
    background-attachment: fixed;
}
:root {
    --cw-backdrop:
        radial-gradient(1200px 800px at 12% -10%, rgba(120, 140, 170, .16), transparent 60%),
        radial-gradient(900px 700px at 100% 55%, rgba(201, 169, 174, .10), transparent 65%),
        radial-gradient(900px 700px at 0% 100%, rgba(168, 195, 193, .12), transparent 60%),
        var(--bg);
}

/* 与 body 相同的背景层：首页卡片会形变成它 */
.cw-stage {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: var(--cw-backdrop);
}

::selection { background: color-mix(in srgb, var(--tint) 42%, transparent); color: var(--ink); }

a { color: inherit; text-decoration: none; -webkit-tap-highlight-color: transparent; }
a:focus-visible, [data-cw-track]:focus-visible {
    outline: 1px dashed color-mix(in srgb, var(--tint) 80%, var(--ink));
    outline-offset: 6px;
    border-radius: 2px;
}

main { position: relative; z-index: 1; }

.cw-dot {
    display: inline-block;
    width: 3px;
    height: 3px;
    margin: 0 1.1em;
    border-radius: 50%;
    background: currentColor;
    opacity: .55;
    vertical-align: middle;
    font-style: normal;
}

/* ---------- 载波画布 ---------- */

.cw-wave {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 3;
}

/* 载波吸附到顶部后，为其下方滚动的文字让出一条安静的带 */
.cw-index::before {
    content: "";
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    height: 136px;
    z-index: 2;
    pointer-events: none;
    background: linear-gradient(to bottom, var(--bg) 0, var(--bg) 62%, rgba(22, 24, 29, 0));
    opacity: 0;
    transition: opacity .6s var(--ease-out);
}
.cw-index.is-stuck::before { opacity: 1; }

/* ---------- 角落 ---------- */

.cw-corner {
    position: fixed;
    top: 26px;
    left: 30px;
    right: 30px;
    z-index: 4;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    pointer-events: none;
    font-family: var(--latin);
    font-size: 15px;
    letter-spacing: .08em;
    color: var(--ink-soft);
}
.cw-corner > * { pointer-events: auto; }

.cw-home {
    display: inline-flex;
    align-items: baseline;
    gap: .55em;
    transition: color .5s var(--ease-out);
}
.cw-home .cw-arrow,
.cw-pager-label .cw-arrow {
    display: inline-block;
    transition: transform .7s var(--spring-bouncy);
}
.cw-home:hover { color: var(--ink); }
.cw-home:hover .cw-arrow { transform: translateX(-5px); }

.cw-count {
    font-variant-numeric: lining-nums tabular-nums;
    color: var(--ink-faint);
}
.cw-count i { font-style: normal; margin: 0 .2em; opacity: .6; }

.cw-tuner {
    position: fixed;
    top: 26px;
    right: 30px;
    z-index: 4;
    display: flex;
    gap: .9em;
    align-items: baseline;
    font-family: var(--latin);
    font-size: 15px;
    letter-spacing: .06em;
    color: var(--ink-soft);
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity .45s var(--ease-out), transform .8s var(--spring);
    pointer-events: none;
}
.cw-tuner.is-on { opacity: 1; transform: none; }
.cw-tuner.is-lost .cw-tuner-title { opacity: .35; }
.cw-tuner-no { color: var(--tuner-tint, var(--ink-faint)); font-variant-numeric: lining-nums tabular-nums; transition: color .5s; }
.cw-tuner-title { transition: opacity .4s; }

/* ---------- 入场 ---------- */

.cw-js .cw-rise {
    opacity: 0;
    transform: translateY(18px);
    filter: blur(5px);
}
.cw-js.is-ready .cw-rise {
    opacity: 1;
    transform: none;
    filter: none;
    transition:
        transform 1.2s var(--spring) calc(var(--d, 0) * 110ms + 120ms),
        opacity .9s var(--ease-out) calc(var(--d, 0) * 110ms + 120ms),
        filter .9s var(--ease-out) calc(var(--d, 0) * 110ms + 120ms);
}

/* ---------- 目录页：首屏 ---------- */

.cw-hero {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0 24px;
    text-align: center;
}

.cw-title {
    margin: 0 0 clamp(34px, 5vw, 56px);
    font-family: var(--latin);
    font-weight: 300;
    font-size: clamp(46px, 9.4vw, 132px);
    line-height: 1;
    letter-spacing: .01em;
    color: var(--ink);
    white-space: nowrap;
}
.cw-js .cw-index .cw-title { letter-spacing: .16em; }
.cw-js.is-ready .cw-index .cw-title {
    letter-spacing: .01em;
    transition:
        transform 1.4s var(--spring) 120ms,
        opacity 1s var(--ease-out) 120ms,
        filter 1s var(--ease-out) 120ms,
        letter-spacing 1.8s var(--spring) 80ms;
}

.cw-axis { width: 100%; height: 60px; margin: -30px 0; pointer-events: none; }

.cw-sub {
    margin: clamp(34px, 5vw, 56px) 0 0;
    font-size: 14px;
    letter-spacing: .5em;
    padding-left: .5em;
    color: var(--ink-soft);
    font-weight: 300;
}
.cw-sub .cw-dot { margin: 0 1.1em 0 .6em; }

.cw-cue {
    position: absolute;
    left: 50%;
    bottom: 38px;
    width: 24px;
    height: 56px;
    margin-left: -12px;
    display: flex;
    justify-content: center;
}
.cw-cue span {
    position: relative;
    width: 1px;
    height: 100%;
    background: var(--hair);
    overflow: hidden;
}
.cw-cue span::after {
    content: "";
    position: absolute;
    left: 0;
    top: -40%;
    width: 1px;
    height: 40%;
    background: linear-gradient(to bottom, transparent, var(--ink-soft), transparent);
    animation: cw-cue 2.8s var(--ease-out) infinite 1.6s;
}
.cw-cue:hover span::after { animation-duration: 1.4s; }

@keyframes cw-cue {
    0% { top: -40%; }
    70%, 100% { top: 100%; }
}

/* ---------- 目录页：曲目 ---------- */

.cw-list {
    max-width: 780px;
    margin: 0 auto;
    padding: 20vh 28px 6vh;
}

.cw-tracks {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cw-track { position: relative; }

.cw-track::after,
.cw-track::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
}
.cw-track::after {
    background: linear-gradient(to right,
        var(--hair) 0, var(--hair) var(--gap-a),
        transparent var(--gap-a), transparent var(--gap-b),
        var(--hair) var(--gap-b), var(--hair) 100%);
}
.cw-track::before {
    z-index: 1;
    background: var(--tint);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .9s var(--spring);
}

.cw-track-link {
    display: grid;
    grid-template-columns: 3.4em 1fr auto;
    align-items: baseline;
    padding: 24px 2px 22px;
    color: var(--ink);
    cursor: pointer;
    outline-offset: 0;
}

.cw-no {
    font-family: var(--latin);
    font-size: 15px;
    letter-spacing: .08em;
    font-variant-numeric: lining-nums tabular-nums;
    color: var(--ink-faint);
    transition: color .5s var(--ease-out);
}

.cw-name {
    font-family: var(--latin);
    font-weight: 400;
    font-size: clamp(23px, 3.1vw, 31px);
    line-height: 1.2;
    letter-spacing: .012em;
    transform: translateX(0);
    transition: transform .85s var(--spring);
}
.cw-name-text { display: inline-block; }

.cw-part {
    position: relative;
    top: -.85em;
    margin-left: .45em;
    font-family: var(--latin);
    font-style: italic;
    font-weight: 300;
    font-size: .48em;
    letter-spacing: .06em;
    color: var(--ink-soft);
}

.cw-meta {
    font-size: 12px;
    letter-spacing: .22em;
    color: var(--ink-faint);
    white-space: nowrap;
    opacity: .75;
    transform: translateX(0);
    transition: opacity .5s var(--ease-out), transform .85s var(--spring), color .5s var(--ease-out);
}
.cw-meta .cw-dot { margin: 0 .9em 0 .68em; }

.cw-track:hover::before,
.cw-track:focus-within::before { transform: scaleX(1); }
.cw-track:hover .cw-name,
.cw-track:focus-within .cw-name { transform: translateX(12px); }
.cw-track:hover .cw-no,
.cw-track:focus-within .cw-no { color: color-mix(in srgb, var(--tint) 75%, var(--ink)); }
.cw-track:hover .cw-meta,
.cw-track:focus-within .cw-meta { opacity: 1; color: var(--ink-soft); transform: translateX(-4px); }

/* 主打 */
.cw-track.is-lead .cw-name { font-weight: 500; }
.cw-track.is-lead .cw-no { color: color-mix(in srgb, var(--tint) 80%, var(--ink)); }
.cw-track.is-lead .cw-no::after {
    content: "";
    display: inline-block;
    width: 4px;
    height: 4px;
    margin-left: .6em;
    border-radius: 50%;
    background: var(--tint);
    vertical-align: middle;
}

/* 未接收 */
.cw-track.is-lost .cw-track-link { cursor: default; }
.cw-track.is-lost .cw-name { color: var(--ink-faint); }
.cw-track.is-lost .cw-part { color: var(--ink-faint); }
.cw-track.is-lost .cw-meta { letter-spacing: .3em; opacity: .55; }
.cw-track.is-lost::before { background: var(--hair); }
.cw-track.is-lost:hover::before { transform: scaleX(0); }
.cw-track.is-lost:hover .cw-name { transform: none; animation: cw-lost .9s var(--ease-out); }
.cw-track.is-lost:hover .cw-meta { transform: none; color: var(--ink-faint); }

@keyframes cw-lost {
    0%   { transform: translateX(0);    opacity: 1; }
    18%  { transform: translateX(9px);  opacity: .9; }
    32%  { transform: translateX(7px);  opacity: .35; }
    40%  { transform: translateX(8px);  opacity: .8; }
    52%  { transform: translateX(6px);  opacity: .2; }
    100% { transform: translateX(0);    opacity: 1; }
}

/* limbo：只被接收到一半 */
.cw-track.is-limbo { margin-top: 64px; }
.cw-track.is-limbo .cw-name-text {
    -webkit-mask-image: linear-gradient(90deg, #000 28%, rgba(0, 0, 0, .28) 70%, rgba(0, 0, 0, .1) 100%);
            mask-image: linear-gradient(90deg, #000 28%, rgba(0, 0, 0, .28) 70%, rgba(0, 0, 0, .1) 100%);
}

/* 行入场 */
.cw-js .cw-track {
    opacity: 0;
    transform: translateY(16px);
}
.cw-js .cw-track.is-in {
    opacity: 1;
    transform: none;
    transition:
        transform 1s var(--spring) calc(var(--k, 0) * 45ms),
        opacity .8s var(--ease-out) calc(var(--k, 0) * 45ms);
}

/* ---------- 目录页：页脚 ---------- */

.cw-foot {
    padding: 16vh 28px 12vh;
    text-align: center;
}
.cw-epigraph {
    margin: 0;
    font-size: 14px;
    font-weight: 300;
    letter-spacing: .32em;
    padding-left: .32em;
    line-height: 2.2;
    color: var(--ink-soft);
}
.cw-sign {
    margin: 30px 0 0;
    font-family: var(--latin);
    font-style: italic;
    font-weight: 300;
    font-size: 15px;
    letter-spacing: .08em;
    color: var(--ink-faint);
}

/* ---------- 阅读页 ---------- */

.cw-reader::before {
    content: "";
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    height: 104px;
    z-index: 2;
    pointer-events: none;
    background: linear-gradient(to bottom, var(--bg) 0, var(--bg) 46%, rgba(22, 24, 29, 0));
}
.cw-wave-bar {
    bottom: auto;
    height: 96px;
    z-index: 3;
}

.cw-read {
    max-width: calc(34em + 48px);
    margin: 0 auto;
    padding: 26vh 24px 10vh;
    font-size: 17px;
}

.cw-read-head {
    text-align: center;
    margin-bottom: 14vh;
}
.cw-read-no {
    margin: 0;
    font-family: var(--latin);
    font-size: 15px;
    letter-spacing: .24em;
    padding-left: .24em;
    font-variant-numeric: lining-nums tabular-nums;
    color: color-mix(in srgb, var(--tint) 75%, var(--ink));
}
.cw-read-title {
    margin: .32em 0 .62em;
    font-family: var(--latin);
    font-weight: 300;
    font-size: clamp(40px, 7.4vw, 78px);
    line-height: 1.05;
    letter-spacing: .01em;
    color: var(--ink);
}
.cw-read-title .cw-part { top: -1em; font-size: .36em; }
.cw-read-meta {
    margin: 0;
    font-size: 12px;
    letter-spacing: .26em;
    padding-left: .26em;
    color: var(--ink-faint);
}

.cw-prose {
    color: var(--ink-body);
    font-weight: 400;
    line-height: 2.05;
    letter-spacing: .03em;
    text-align: justify;
    hanging-punctuation: allow-end;
    overflow-wrap: break-word;
}
.cw-prose p { margin: 0 0 1.3em; }
.cw-prose h1, .cw-prose h2, .cw-prose h3, .cw-prose h4 {
    margin: 3.8em 0 2.2em;
    text-align: center;
    font-size: 15px;
    font-weight: 400;
    letter-spacing: .32em;
    padding-left: .32em;
    color: var(--ink-soft);
}
.cw-prose h1 strong, .cw-prose h2 strong, .cw-prose h3 strong, .cw-prose h4 strong { font-weight: 400; }
.cw-prose strong { font-weight: 500; color: var(--ink); }
.cw-prose em {
    font-style: normal;
    -webkit-text-emphasis: filled dot color-mix(in srgb, var(--tint) 85%, var(--ink));
            text-emphasis: filled dot color-mix(in srgb, var(--tint) 85%, var(--ink));
    -webkit-text-emphasis-position: under;
            text-emphasis-position: under right;
}
.cw-prose a {
    color: var(--ink);
    background: linear-gradient(var(--tint), var(--tint)) 0 100% / 100% 1px no-repeat;
    transition: background-size .6s var(--spring);
}
.cw-prose a:hover { background-size: 100% 100%; }
.cw-prose hr {
    width: 48px;
    height: 12px;
    margin: 3.6em auto;
    border: 0;
    background: color-mix(in srgb, var(--tint) 85%, var(--ink-faint));
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 48 12'%3E%3Cpath d='M0 6 Q6 0 12 6 T24 6 T36 6 T48 6' fill='none' stroke='%23000' stroke-width='1'/%3E%3C/svg%3E") center / contain no-repeat;
            mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 48 12'%3E%3Cpath d='M0 6 Q6 0 12 6 T24 6 T36 6 T48 6' fill='none' stroke='%23000' stroke-width='1'/%3E%3C/svg%3E") center / contain no-repeat;
}
.cw-prose blockquote,
.cw-prose .quote-box {
    margin: 2.2em 0;
    padding: .1em 0 .1em 1.4em;
    border-left: 1px solid var(--tint);
    color: var(--ink-soft);
}
.cw-prose blockquote p:last-child,
.cw-prose .quote-body p:last-child { margin-bottom: 0; }
.cw-prose .quote-header {
    margin-bottom: .6em;
    font-size: 12px;
    letter-spacing: .26em;
    color: var(--ink-faint);
}
.cw-prose .quote-icon, .cw-prose .quote-toggle { display: none; }
.cw-prose img { display: block; max-width: 100%; height: auto; margin: 2.4em auto; border-radius: 2px; }
.cw-prose ul, .cw-prose ol { padding-left: 1.6em; margin: 0 0 1.3em; }
.cw-prose code { font-size: .9em; padding: .1em .35em; background: rgba(255, 255, 255, .06); border-radius: 3px; }
.cw-prose sup a { background: none; color: color-mix(in srgb, var(--tint) 70%, var(--ink)); font-family: var(--latin); }
.cw-prose .footnotes {
    margin-top: 5em;
    padding-top: 1.6em;
    border-top: 1px solid var(--hair);
    font-size: 13px;
    line-height: 1.9;
    color: var(--ink-soft);
}
.cw-prose .footnotes h2 { display: none; }

.cw-end {
    display: flex;
    justify-content: center;
    margin: 10vh 0 9vh;
    color: color-mix(in srgb, var(--tint) 80%, var(--ink-faint));
}
.cw-end path { stroke-dasharray: 60; stroke-dashoffset: 60; transition: stroke-dashoffset 1.8s var(--ease-out); }
.cw-end.is-in path { stroke-dashoffset: 0; }

.cw-pager {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: end;
    gap: 24px;
    padding-top: 34px;
    border-top: 1px solid var(--hair);
}
.cw-pager-link { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.cw-pager-link.is-next { align-items: flex-end; text-align: right; }
.cw-pager-label {
    display: inline-flex;
    gap: .55em;
    font-family: var(--latin);
    font-size: 14px;
    letter-spacing: .1em;
    font-variant-numeric: lining-nums tabular-nums;
    color: var(--ink-faint);
    transition: color .5s var(--ease-out);
}
.cw-pager-title {
    font-family: var(--latin);
    font-size: 22px;
    line-height: 1.25;
    color: var(--ink);
    transition: transform .85s var(--spring);
}
.cw-pager-title .cw-part { top: -.7em; margin-left: .15em; }
.cw-pager-link:hover .cw-pager-label { color: color-mix(in srgb, var(--tint) 75%, var(--ink)); }
.cw-pager-link.is-prev:hover .cw-pager-title { transform: translateX(-6px); }
.cw-pager-link.is-next:hover .cw-pager-title { transform: translateX(6px); }
.cw-pager-link.is-prev:hover .cw-arrow { transform: translateX(-5px); }
.cw-pager-link.is-next:hover .cw-arrow { transform: translateX(5px); }
.cw-pager-back {
    padding-bottom: 4px;
    font-size: 12px;
    letter-spacing: .4em;
    padding-left: .4em;
    color: var(--ink-soft);
    transition: color .5s var(--ease-out), letter-spacing .8s var(--spring);
}
.cw-pager-back:hover { color: var(--ink); letter-spacing: .55em; }

/* ---------- 页面切换 ---------- */

::view-transition-group(*) {
    animation-duration: .9s;
    animation-timing-function: var(--spring);
}
::view-transition-old(root) {
    animation: cw-vt-out .38s var(--ease-out) both;
}
::view-transition-new(root) {
    animation: cw-vt-in .6s var(--ease-out) .08s both;
}
@keyframes cw-vt-out { to { opacity: 0; filter: blur(4px); } }
@keyframes cw-vt-in { from { opacity: 0; filter: blur(4px); } }

/* ---------- 一镜到底：从博客首页卡片进入 ---------- */

.cw-from-home .cw-stage { view-transition-name: cw-stage; }
.cw-from-home .cw-axis { view-transition-name: cw-hero-wave; }
.cw-from-home .cw-title { view-transition-name: cw-hero-title; }
.cw-from-home .cw-sub { view-transition-name: cw-hero-sub; }
.cw-from-home .cw-wave { view-transition-name: cw-carrier; }

/* 首屏标题与副题直接处于终态，由过渡负责「入场」 */
.cw-from-home.cw-js .cw-hero .cw-title.cw-rise,
.cw-from-home.cw-js .cw-hero .cw-sub.cw-rise {
    opacity: 1;
    transform: none;
    filter: none;
    transition: none;
}
.cw-from-home.cw-js .cw-index .cw-title { letter-spacing: .01em; }

/* 卡片 → 整屏：带轻微回弹地铺满视口 */
html.cw-from-home::view-transition-group(cw-stage) {
    animation-duration: 1.15s;
    animation-timing-function: var(--spring);
}
/* 旧卡片全程不透明垫底，新背景以普通叠加盖上，避免交叉淡化时中途透出首页 */
html.cw-from-home::view-transition-old(cw-stage) {
    animation: none;
    mix-blend-mode: normal;
}
html.cw-from-home::view-transition-new(cw-stage) {
    animation: cw-vt-fade-in .6s var(--ease-out) .15s both;
    mix-blend-mode: normal;
}

/* 标题、副题、载波：从卡片中的位置放大到首屏，稍错开 */
html.cw-from-home::view-transition-group(cw-hero-title) {
    animation-duration: 1.25s;
    animation-timing-function: var(--spring);
    animation-delay: .04s;
}
html.cw-from-home::view-transition-group(cw-hero-sub) {
    animation-duration: 1.3s;
    animation-timing-function: var(--spring);
    animation-delay: .1s;
}
html.cw-from-home::view-transition-group(cw-hero-wave) {
    animation-duration: 1.2s;
    animation-timing-function: var(--spring);
}
/* 默认快照按宽高比缩放且顶端对齐，会让载波中线下坠；只横向拉伸，中线始终对准 */
html.cw-from-home::view-transition-old(cw-hero-wave),
html.cw-from-home::view-transition-new(cw-hero-wave),
html.cw-from-home::view-transition-old(cw-stage),
html.cw-from-home::view-transition-new(cw-stage) {
    height: 100%;
    object-fit: fill;
}
html.cw-from-home::view-transition-old(cw-hero-title),
html.cw-from-home::view-transition-old(cw-hero-sub) {
    animation: cw-vt-fade-out .6s var(--ease-out) both;
}
html.cw-from-home::view-transition-new(cw-hero-title),
html.cw-from-home::view-transition-new(cw-hero-sub) {
    animation: cw-vt-fade-in .7s var(--ease-out) .08s both;
}
/* 卡片里的载波在抵达后才把位置交给画布上的真实载波 */
html.cw-from-home::view-transition-old(cw-hero-wave) {
    animation: cw-vt-wave-handoff 1.4s linear both;
}
html.cw-from-home::view-transition-new(cw-hero-wave) { animation: none; opacity: 0; }
html.cw-from-home::view-transition-group(cw-carrier) { animation: none; }
html.cw-from-home::view-transition-new(cw-carrier) {
    animation: cw-vt-fade-in .8s ease-in-out .45s both;
}

/* 首页其余卡片：后退、虚化、淡出；子页面其余内容在后段浮现 */
html.cw-from-home::view-transition-old(root) {
    animation: cw-vt-home-out .6s var(--ease-out) both;
    transform-origin: 50% 30%;
}
html.cw-from-home::view-transition-new(root) {
    animation: cw-vt-in .7s var(--ease-out) .6s both;
}

@keyframes cw-vt-fade-out { to { opacity: 0; } }
@keyframes cw-vt-fade-in { from { opacity: 0; } }
@keyframes cw-vt-wave-handoff {
    0% { opacity: 1; }
    40% { opacity: 1; animation-timing-function: ease-in-out; }
    100% { opacity: 0; }
}
@keyframes cw-vt-home-out {
    to { opacity: 0; transform: scale(.94); filter: blur(8px); }
}

/* 从阅读页回到目录：视口内曲目直接就位（须在「行入场」规则之后） */
.cw-returning .cw-track.is-in { transition: none; }

/* ---------- 一镜到底：回到博客首页（过渡动画写在首页的 hingle.css） ---------- */

.cw-to-home .cw-stage { view-transition-name: cw-stage; }
.cw-to-home .cw-axis { view-transition-name: cw-hero-wave; }
.cw-to-home .cw-title { view-transition-name: cw-hero-title; }
.cw-to-home .cw-sub { view-transition-name: cw-hero-sub; }
.cw-to-home .cw-wave { view-transition-name: cw-carrier; }

/* ---------- 窄屏 ---------- */

@media (max-width: 640px) {
    .cw-corner, .cw-tuner { top: 18px; left: 20px; right: 20px; font-size: 14px; }
    .cw-tuner { left: auto; }
    .cw-list { padding: 14vh 20px 4vh; }
    .cw-track-link {
        grid-template-columns: 2.6em 1fr;
        row-gap: 6px;
        padding: 20px 0 18px;
    }
    .cw-meta { grid-column: 2; font-size: 11px; }
    .cw-track:hover .cw-meta { transform: none; }
    .cw-track:hover .cw-name { transform: translateX(6px); }
    .cw-track.is-limbo { margin-top: 44px; }
    .cw-sub { letter-spacing: .36em; }
    .cw-epigraph { letter-spacing: .2em; font-size: 13px; }
    .cw-read { padding-top: 20vh; font-size: 16px; }
    .cw-reader::before { height: 88px; }
    .cw-pager { grid-template-columns: 1fr 1fr; }
    .cw-pager-back { grid-column: 1 / -1; grid-row: 2; justify-self: center; padding-top: 18px; }
    .cw-pager-title { font-size: 19px; }
}

/* ---------- 减弱动效 ---------- */

@media (prefers-reduced-motion: reduce) {
    @view-transition { navigation: none; }
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        transition-duration: .01ms !important;
        transition-delay: 0s !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
    }
    .cw-js .cw-rise, .cw-js .cw-track { filter: none; transform: none; }
}


/* 标题里的 i：通往隐藏篇目 i.，再从 i. 通往 limbo */
.cw-i, .cw-glyph-i { display: inline-block; color: inherit; transition: color .6s var(--ease-out), transform .8s var(--spring-bouncy), text-shadow .6s var(--ease-out); }
.cw-i:hover, .cw-i:focus-visible,
a.cw-glyph-i:hover, a.cw-glyph-i:focus-visible { color: #B9A4C9; transform: translateY(-3px); text-shadow: 0 0 18px rgba(185,164,201,.45); }
.cw-glyph-l, .cw-glyph-r, .cw-glyph-dot { display: inline-block; }

/* ---------- 一镜到底：首屏 ↔ i. ↔ limbo. ---------- */

.cw-via-i .cw-i,
.cw-via-i .cw-glyph-i { view-transition-name: cw-i; }
.cw-via-i .cw-read-title .cw-name-text { view-transition-name: none !important; }
.cw-via-i .cw-glyph-dot { view-transition-name: cw-i-dot; }
.cw-via-i .cw-glyph-l { view-transition-name: cw-i-l; }
.cw-via-i .cw-glyph-r { view-transition-name: cw-i-r; }

/* 回到首屏时标题直接处于终态，i 的落点不会随字距收拢而漂移 */
.cw-via-i.cw-js .cw-hero .cw-title.cw-rise { opacity: 1; transform: none; filter: none; transition: none; }
.cw-via-i.cw-js .cw-index .cw-title { letter-spacing: .01em; }

/* 先让场景退去，i 独自穿行，抵达后其余内容才浮现 */
html.cw-via-i::view-transition-old(root) { animation: cw-vt-out .45s var(--ease-out) both; }
html.cw-via-i::view-transition-new(root) { animation: cw-vt-in .8s var(--ease-out) .55s both; }
html.cw-via-i::view-transition-group(cw-i) {
    animation-duration: 1.2s;
    animation-timing-function: var(--spring);
}

/* i 落定后，l 与 mbo. 从它身后向两侧浮现；i. 的句点同理 */
html.cw-via-i::view-transition-group(cw-i-l),
html.cw-via-i::view-transition-group(cw-i-r),
html.cw-via-i::view-transition-group(cw-i-dot) { animation: none; }
html.cw-via-i::view-transition-new(cw-i-l) { animation: cw-vt-bloom-l 1s var(--spring) .7s both; }
html.cw-via-i::view-transition-new(cw-i-r) { animation: cw-vt-bloom-r 1s var(--spring) .78s both; }
html.cw-via-i::view-transition-new(cw-i-dot) { animation: cw-vt-bloom-r .9s var(--spring) .75s both; }
/* 反向时收回到 i 身后 */
html.cw-via-i::view-transition-old(cw-i-l) { animation: cw-vt-bloom-l .5s var(--ease-out) reverse both; }
html.cw-via-i::view-transition-old(cw-i-r),
html.cw-via-i::view-transition-old(cw-i-dot) { animation: cw-vt-bloom-r .5s var(--ease-out) reverse both; }

@keyframes cw-vt-bloom-l {
    from { opacity: 0; transform: translateX(28px); filter: blur(6px); }
}
@keyframes cw-vt-bloom-r {
    from { opacity: 0; transform: translateX(-28px); filter: blur(6px); }
}