/* =========================================================
   大薯ki · 文章阅读页
   ========================================================= */

:root {
  --bg: #fff9ef;
  --bg-2: #f6efff;
  --ink: #2d203d;
  --ink-soft: #61506f;
  --muted: #8a789b;
  --line: rgba(56, 38, 76, .13);
  --line-strong: rgba(56, 38, 76, .22);
  --surface: rgba(255, 253, 248, .7);
  --surface-solid: #fffdf8;
  --surface-2: rgba(255, 255, 255, .55);
  --butter: #f9cc3c;
  --butter-soft: #fff0b8;
  --lav: #c9b6e4;
  --lav-soft: #eee6fa;
  --lav-deep: #7b5ea7;
  --coral: #e85d4a;
  --shadow: 0 24px 70px rgba(77, 53, 105, .12);
  --shadow-sm: 0 10px 30px rgba(77, 53, 105, .08);
  --font-sans: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-display: "Arial Rounded MT Bold", "Hiragino Maru Gothic ProN", "YouYuan", "Microsoft YaHei", "PingFang SC", sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif;
  --font-mono: "Cascadia Code", "SFMono-Regular", "Consolas", "Liberation Mono", monospace;
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #15101f;
  --bg-2: #1d142b;
  --ink: #f7efff;
  --ink-soft: #cbbcda;
  --muted: #9c8bb1;
  --line: rgba(255, 255, 255, .12);
  --line-strong: rgba(255, 255, 255, .23);
  --surface: rgba(34, 25, 48, .72);
  --surface-solid: #221930;
  --surface-2: rgba(255, 255, 255, .055);
  --butter: #ffd95c;
  --butter-soft: #3f331c;
  --lav: #bda4e4;
  --lav-soft: #2b203e;
  --lav-deep: #d4bcf8;
  --coral: #ff7e6a;
  --shadow: 0 26px 80px rgba(0, 0, 0, .35);
  --shadow-sm: 0 10px 30px rgba(0, 0, 0, .25);
  color-scheme: dark;
}

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

html {
  background: var(--bg);
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  min-width: 320px;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--butter);
  color: #2d203d;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

img {
  display: block;
  max-width: 100%;
}

p, h1, h2, h3, h4, blockquote, ul, ol, pre, table {
  margin: 0;
}

:focus-visible {
  outline: 3px solid var(--lav-deep);
  outline-offset: 4px;
  border-radius: 4px;
}

.article-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(48% 42% at 8% 4%, rgba(201, 182, 228, .55), transparent 72%),
    radial-gradient(40% 36% at 94% 8%, rgba(249, 204, 60, .26), transparent 70%),
    radial-gradient(42% 36% at 82% 94%, rgba(232, 93, 74, .1), transparent 72%),
    linear-gradient(180deg, var(--bg), var(--bg-2) 55%, var(--bg));
}

.article-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: .25;
  -webkit-mask-image: radial-gradient(ellipse 60% 45% at 40% 4%, #000, transparent 76%);
  mask-image: radial-gradient(ellipse 60% 45% at 40% 4%, #000, transparent 76%);
}

[data-theme="dark"] .article-bg {
  background:
    radial-gradient(46% 40% at 8% 4%, rgba(123, 94, 167, .28), transparent 72%),
    radial-gradient(38% 32% at 94% 8%, rgba(249, 204, 60, .08), transparent 70%),
    linear-gradient(180deg, var(--bg), var(--bg-2) 55%, var(--bg));
}

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  height: 3px;
  pointer-events: none;
}

.reading-progress span {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--butter), var(--coral) 55%, var(--lav-deep));
}

.article-shell {
  width: min(920px, calc(100% - 40px));
  margin-inline: auto;
}

.article-header {
  position: sticky;
  top: 0;
  z-index: 80;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 249, 239, .84);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
}

[data-theme="dark"] .article-header {
  background: rgba(21, 16, 31, .82);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 68px;
}

.article-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  flex: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--butter), #ffe9a2);
  color: #2d203d;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 900;
  line-height: 1;
  box-shadow: inset 0 0 0 1px rgba(45, 32, 61, .08), 0 5px 14px rgba(249, 204, 60, .24);
  transform: rotate(-8deg);
}

.brand-text {
  display: block;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.05;
  white-space: nowrap;
}

.brand-text small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .45rem;
  font-weight: 500;
  letter-spacing: .15em;
  line-height: 1;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.all-posts {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: .7rem;
  font-weight: 600;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.all-posts:hover {
  color: var(--ink);
  border-color: var(--lav-deep);
  background: var(--lav-soft);
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
  color: var(--ink-soft);
  transition: color .2s ease, border-color .2s ease, background-color .2s ease, transform .2s ease;
}

.theme-toggle:hover {
  color: var(--ink);
  border-color: var(--lav-deep);
  background: var(--lav-soft);
  transform: rotate(10deg);
}

.theme-toggle svg {
  width: 16px;
  height: 16px;
}

.theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

.article-main {
  width: min(760px, calc(100% - 40px));
  margin-inline: auto;
  padding: clamp(48px, 8vw, 82px) 0 clamp(60px, 8vw, 92px);
  animation: pageIn .7s cubic-bezier(.2, .75, .25, 1) both;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 28px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .03em;
  transition: color .2s ease, transform .2s ease;
}

.back-link:hover {
  color: var(--coral);
  transform: translateX(-3px);
}

.post-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .58rem;
  letter-spacing: .06em;
  line-height: 1.6;
}

.meta-tag {
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--lav-soft);
  color: var(--lav-deep);
  font-family: var(--font-sans);
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: 0;
}

.meta-dot {
  color: var(--line-strong);
}

.post-title {
  margin: 18px 0 16px;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 5.7vw, 3.65rem);
  font-weight: 900;
  letter-spacing: -.055em;
  line-height: 1.23;
  text-wrap: balance;
}

.post-lead {
  max-width: 680px;
  color: var(--ink-soft);
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.8vw, 1.13rem);
  line-height: 1.95;
}

.post-lead:empty {
  display: none;
}

.byline {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .58rem;
  letter-spacing: .02em;
}

.byline-avatar {
  display: block;
  width: 28px;
  height: 28px;
  flex: none;
  border: 2px solid var(--surface-solid);
  border-radius: 50%;
  background-color: #f4e8d2;
  background-image: url("avatar.jpg");
  background-position: center;
  background-size: cover;
  box-shadow: 0 0 0 1px var(--line);
}

.byline-name {
  color: var(--ink-soft);
  font-family: var(--font-sans);
  font-size: .7rem;
  font-weight: 700;
}

.post-rule {
  height: 1px;
  margin: clamp(28px, 5vw, 42px) 0 clamp(26px, 4vw, 36px);
  background-image: linear-gradient(90deg, var(--line), var(--line) 50%, transparent 50%);
  background-size: 8px 1px;
  background-repeat: repeat-x;
}

.prose {
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.35vw, 1.04rem);
  line-height: 2.06;
  overflow-wrap: break-word;
  word-break: break-word;
}

.prose > :first-child {
  margin-top: 0;
}

.prose p {
  margin: 1.22em 0;
}

.prose h2,
.prose h3,
.prose h4 {
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.035em;
  line-height: 1.4;
  scroll-margin-top: 92px;
}

.prose h2 {
  position: relative;
  margin: 2.5em 0 .85em;
  padding-left: 17px;
  font-size: clamp(1.38rem, 2.7vw, 1.82rem);
}

.prose h2::before {
  content: "";
  position: absolute;
  top: .44em;
  left: 0;
  width: 8px;
  height: .72em;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--butter), var(--lav));
  transform: rotate(-7deg);
}

.prose h3 {
  margin: 2em 0 .65em;
  font-size: clamp(1.12rem, 2vw, 1.3rem);
}

.prose h4 {
  margin: 1.8em 0 .55em;
  font-size: 1.02rem;
}

.prose strong {
  color: var(--ink);
  font-weight: 800;
}

.prose em {
  color: var(--ink-soft);
}

.prose a {
  color: var(--lav-deep);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(249, 204, 60, .65);
  text-decoration-thickness: 3px;
  text-underline-offset: 3px;
  transition: color .2s ease, text-decoration-color .2s ease;
}

.prose a:hover {
  color: var(--coral);
  text-decoration-color: var(--coral);
}

.prose blockquote {
  margin: 1.7em 0;
  padding: 1em 1.25em;
  border-left: 3px solid var(--butter);
  border-radius: 0 14px 14px 0;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 1.03em;
  line-height: 1.95;
}

.prose blockquote p {
  margin: .25em 0;
}

.prose ul,
.prose ol {
  margin: 1.1em 0;
  padding-left: 1.45em;
}

.prose li {
  margin: .42em 0;
  padding-left: .2em;
}

.prose li::marker {
  color: var(--coral);
  font-weight: 700;
}

.prose hr {
  margin: 2.4em 0;
  border: 0;
  border-top: 1px dashed var(--line-strong);
}

.prose code {
  padding: .16em .42em;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--surface-2);
  color: var(--coral);
  font-family: var(--font-mono);
  font-size: .86em;
}

.prose pre {
  position: relative;
  margin: 1.7em 0;
  padding: 18px 16px 16px;
  overflow-x: auto;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 14px;
  background: #241a33;
  color: #f3e9ff;
  font-size: .8rem;
  line-height: 1.8;
  box-shadow: 0 14px 34px rgba(36, 26, 51, .18);
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, .2) transparent;
}

.prose pre code {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font-size: inherit;
}

.copy-code {
  position: absolute;
  top: 9px;
  right: 9px;
  padding: 4px 8px;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 6px;
  background: rgba(255, 255, 255, .06);
  color: rgba(255, 255, 255, .62);
  font-family: var(--font-mono);
  font-size: .52rem;
  line-height: 1.5;
  opacity: 0;
  transition: opacity .2s ease, color .2s ease, background-color .2s ease;
}

.prose pre:hover .copy-code,
.copy-code:focus-visible {
  opacity: 1;
}

.copy-code:hover {
  color: #2d203d;
  background: var(--butter);
  border-color: transparent;
}

.prose img {
  width: auto;
  max-width: 100%;
  margin: 1.8em auto;
  border: 6px solid var(--surface-solid);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.prose table {
  width: 100%;
  margin: 1.6em 0;
  border-collapse: collapse;
  font-size: .86rem;
}

.prose th,
.prose td {
  padding: 9px 11px;
  border: 1px solid var(--line);
  text-align: left;
}

.prose th {
  background: var(--lav-soft);
  color: var(--ink);
  font-weight: 700;
}

.prose tr:nth-child(even) td {
  background: var(--surface-2);
}

.post-end {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(36px, 6vw, 52px);
  padding-top: 18px;
  border-top: 1px dashed var(--line);
}

.raw-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--lav-deep);
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .02em;
  transition: color .2s ease, transform .2s ease;
}

.raw-link:hover {
  color: var(--coral);
  transform: translateY(-2px);
}

.post-source {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .52rem;
  line-height: 1.7;
  word-break: break-all;
}

.post-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: clamp(32px, 5vw, 48px);
}

.pager-link {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-height: 96px;
  padding: 15px 17px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--surface);
  transition: border-color .2s ease, background-color .2s ease, transform .2s ease;
}

.pager-link:hover {
  border-color: var(--lav-deep);
  background: var(--lav-soft);
  transform: translateY(-2px);
}

.pager-link.next {
  text-align: right;
  align-items: flex-end;
}

.pager-link span {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .52rem;
  letter-spacing: .06em;
}

.pager-link b {
  color: var(--ink);
  font-size: .79rem;
  font-weight: 700;
  line-height: 1.6;
}

.pager-empty {
  display: grid;
  place-items: center;
  min-height: 96px;
  padding: 15px;
  border: 1px dashed var(--line);
  border-radius: 15px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .54rem;
  letter-spacing: .03em;
  line-height: 1.7;
  text-align: center;
  opacity: .7;
}

.article-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  min-height: 74px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .55rem;
  line-height: 1.8;
}

.footer-inner a {
  color: var(--ink-soft);
  transition: color .2s ease;
}

.footer-inner a:hover {
  color: var(--butter);
}

@keyframes pageIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 700px) {
  .article-shell {
    width: calc(100% - 28px);
  }

  .header-inner {
    min-height: 60px;
  }

  .mark {
    width: 32px;
    height: 32px;
    font-size: .9rem;
  }

  .brand-text {
    font-size: .9rem;
  }

  .brand-text small {
    font-size: .4rem;
  }

  .all-posts {
    display: none;
  }

  .theme-toggle {
    width: 34px;
    height: 34px;
  }

  .article-main {
    width: calc(100% - 32px);
    padding-top: 40px;
  }

  .post-title {
    font-size: clamp(2rem, 9.5vw, 2.8rem);
  }

  .prose {
    font-size: 1rem;
    line-height: 2;
  }

  .prose h2 {
    font-size: 1.4rem;
  }

  .copy-code {
    opacity: 1;
  }

  .post-pager {
    grid-template-columns: 1fr;
  }

  .pager-empty {
    display: none;
  }

  .footer-inner {
    font-size: .5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}