/* Mia · AI now：Mia 的个人网站，也是一个 AI 门户。米白底、墨黑字、细线分隔、大标题；荧光黄绿只当点缀。
   个人味道放在 Mia 自己的话里（「Mia 说」气泡、第一人称的栏目、招牌告别），「AI」键帽和主按钮的硬阴影是品牌签名
   （和 YouTube 头像、视频封面同一套）。 */
:root {
  --bg: #f6f4ef;
  --ink: #0f0f0f;
  --ink-2: #2b2a27;
  --muted: #6f6c65;
  --line: #e2ded4;
  --lime: #c8f03c;
  --dark: #0f0f0f;
  --dark-2: #191918;
  --dark-line: #2d2d2b;
  --dark-text: #f3f1ea;
  --dark-muted: #9a978f;
  --r: 14px;
  --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", system-ui, sans-serif;
  --display: "Space Grotesk", var(--sans);
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.75 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
img { max-width: 100%; display: block; }
.wrap { width: min(1200px, 100% - 48px); margin: 0 auto; }
.eyebrow, .kicker { display: inline-flex; align-items: center; gap: 10px; margin: 0; font: 600 13px/1 var(--display); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.live { width: 8px; height: 8px; border-radius: 50%; background: #ff3b30; box-shadow: 0 0 0 4px rgba(255, 59, 48, .16); }

/* 顶栏 */
.top { position: sticky; top: 0; z-index: 20; background: rgba(246, 244, 239, .88); backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 6px; flex: none; text-decoration: none; font: 700 23px/1 var(--display); letter-spacing: -.03em; }
.key { display: inline-block; background: var(--lime); border: 2.5px solid var(--ink); border-radius: 8px; padding: 4px 6px 5px; box-shadow: 2.5px 2.5px 0 var(--ink); transform: rotate(-4deg); font-size: .83em; letter-spacing: -.02em; color: var(--ink); }
.nav-links { display: flex; gap: 2px; margin-right: auto; }
.nav-links a { padding: 8px 13px; border-radius: 999px; text-decoration: none; font: 600 15px/1 var(--sans); color: var(--ink-2); transition: background .15s, color .15s; }
.nav-links a:hover { background: rgba(15, 15, 15, .07); }
.nav-links a[aria-current="page"] { background: var(--ink); color: #fff; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 22px; border: 1.5px solid var(--ink); border-radius: 999px; background: transparent; color: var(--ink); font: 700 15px/1.2 var(--sans); text-decoration: none; cursor: pointer; white-space: nowrap; transition: transform .12s ease, box-shadow .12s ease, background .15s, color .15s; }
.btn:hover { background: var(--ink); color: #fff; }
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-primary, .btn-lime { background: var(--lime); border: 2px solid var(--ink); box-shadow: 3px 3px 0 var(--ink); color: var(--ink); }
.btn-primary:hover, .btn-lime:hover { background: var(--lime); color: var(--ink); transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ink); }
.btn-primary:active, .btn-lime:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #2a2a2a; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* 首页：今天的日报 */
.today { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center; padding: 64px 0 8px; }
.today h1 { font: 900 clamp(38px, 5vw, 66px)/1.1 var(--sans); letter-spacing: -.025em; margin: 20px 0; }
.today .dek { font-size: 18px; color: var(--ink-2); margin: 0 0 26px; max-width: 560px; }
.media { position: relative; display: block; border-radius: 18px; overflow: hidden; aspect-ratio: 16 / 9; background: #111; box-shadow: 0 34px 60px -34px rgba(0, 0, 0, .5); }
.media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s cubic-bezier(.2, .7, .2, 1); }
.media:hover img { transform: scale(1.035); }
.media > .yt { width: 100%; height: 100%; }
.media .play { position: absolute; left: 22px; bottom: 22px; width: 64px; height: 64px; border-radius: 50%; background: var(--lime); border: 2px solid var(--ink); box-shadow: 3px 3px 0 var(--ink); display: grid; place-items: center; }
.play::after { content: ""; border-style: solid; border-width: 11px 0 11px 18px; border-color: transparent transparent transparent var(--ink); margin-left: 5px; }
.headlines { list-style: none; margin: 52px 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); column-gap: 56px; border-top: 1px solid var(--ink); }
.headlines li { border-bottom: 1px solid var(--line); }
.headlines a { display: flex; gap: 18px; align-items: baseline; padding: 15px 0; text-decoration: none; }
.headlines .n { font: 700 14px/1 var(--display); color: var(--muted); min-width: 22px; }
.headlines .t { font: 700 16.5px/1.5 var(--sans); }
.headlines a:hover .t, .daily-row:hover span, .story-card:hover h3, .lab-card:hover h3 { text-decoration: underline; text-decoration-color: var(--lime); text-decoration-thickness: 4px; text-underline-offset: 4px; }

/* 「Mia 说」：主播自己的点评（日报稿子里配音放慢的那几句），个人味道主要在这里 */
.mia-says { display: block; margin: 22px 0; padding: 16px 22px 18px; background: #fff; border: 2px solid var(--ink); border-radius: 18px 18px 18px 4px; box-shadow: 4px 4px 0 var(--ink); font: 700 17px/1.75 var(--sans); color: var(--ink); }
.mia-says b { display: inline-block; margin-right: 10px; padding: 2px 10px; background: var(--lime); border: 2px solid var(--ink); border-radius: 999px; font: 700 12.5px/1.5 var(--display); letter-spacing: .02em; transform: rotate(-3deg); }
.today .mia-says { margin: 0 0 30px; font-size: 16px; }

/* 栏目标题 */
.sec { padding-top: 96px; }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--ink); padding-bottom: 18px; margin-bottom: 32px; }
.sec-head h2 { font: 800 clamp(30px, 4vw, 46px)/1.05 var(--sans); letter-spacing: -.02em; margin: 0; }
.sec-head h2 small { display: block; font: 600 13px/1 var(--display); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.sec-head p { margin: 0; color: var(--muted); font-size: 15px; max-width: 400px; text-align: right; }
.more { font: 700 15px/1 var(--sans); text-decoration: none; white-space: nowrap; }
.more:hover { text-decoration: underline; }

/* 讲解卡片 */
.feature { display: grid; grid-template-columns: 1.85fr 1fr; gap: 36px; }
.feature .side { display: grid; gap: 32px; align-content: start; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px 32px; }
.feature + .grid3 { margin-top: 48px; }
.story-card { display: block; text-decoration: none; }
.story-card .media { border-radius: var(--r); box-shadow: none; }
.story-card .meta { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0 8px; font: 600 12.5px/1.2 var(--display); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.story-card h3 { font: 800 19px/1.4 var(--sans); margin: 0; letter-spacing: -.005em; }
.story-card.big h3 { font-size: clamp(24px, 2.5vw, 32px); line-height: 1.25; }
.story-card p { color: var(--muted); font-size: 15px; line-height: 1.65; margin: 10px 0 0; }
.when.soon { color: var(--ink); background: var(--lime); padding: 2px 7px; border-radius: 4px; }

/* 实验场：深色整条 */
.lab-band { background: var(--dark); color: var(--dark-text); margin-top: 104px; padding: 80px 0 88px; }
.lab-band .sec { padding-top: 0; }
.lab-band .sec-head { border-color: var(--dark-text); }
.lab-band .sec-head h2 small, .lab-band .sec-head p { color: var(--dark-muted); }
.lab-band .more { color: var(--lime); }
.lab-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.lab-card { display: block; text-decoration: none; background: var(--dark-2); border: 1px solid var(--dark-line); border-radius: var(--r); overflow: hidden; transition: border-color .2s, transform .2s; }
.lab-card:hover { border-color: var(--lime); transform: translateY(-3px); }
.lab-card img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; image-rendering: pixelated; border-bottom: 1px solid var(--dark-line); }
.lab-card .body { padding: 18px 20px 22px; }
.lab-card .tag { font: 600 12px/1 var(--display); letter-spacing: .12em; text-transform: uppercase; color: var(--lime); }
.lab-card h3 { font: 800 19px/1.4 var(--sans); margin: 10px 0 6px; color: #fff; }
.lab-card p { color: var(--dark-muted); font-size: 14.5px; line-height: 1.65; margin: 0; }
.lab-card .open { display: inline-block; margin-top: 14px; font: 700 14px/1 var(--sans); color: var(--lime); }
.page-dark { background: var(--dark); }
.page-dark .top { background: rgba(15, 15, 15, .86); border-color: var(--dark-line); }
.page-dark .brand, .page-dark .nav-links a { color: var(--dark-text); }
.page-dark .nav-links a:hover { background: rgba(255, 255, 255, .08); }
.page-dark .nav-links a[aria-current="page"] { background: var(--lime); color: var(--ink); }
.page-dark .top .btn-dark { background: var(--lime); color: var(--ink); }
.page-dark .lab-band { margin-top: 0; padding-top: 56px; }

/* 日报列表 */
.daily-list { border-top: 1px solid var(--ink); }
.daily-row { display: grid; grid-template-columns: 112px 1fr auto; gap: 24px; align-items: baseline; padding: 18px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
.daily-row time { font: 700 15px/1 var(--display); letter-spacing: .02em; }
.daily-row span { font: 700 18px/1.5 var(--sans); }
.daily-row::after { content: "→"; color: var(--muted); font-family: var(--display); }

/* 打招呼 + 订阅（荧光黄绿整条） */
.cta { background: var(--lime); margin-top: 104px; border-top: 2px solid var(--ink); border-bottom: 2px solid var(--ink); }
.cta .wrap { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 64px 0; }
.hello { display: flex; align-items: flex-start; gap: 24px; }
.avatar { flex: none; width: 84px; height: 84px; border-radius: 24px; background: #fff; border: 2.5px solid var(--ink); box-shadow: 4px 4px 0 var(--ink); display: grid; place-items: center; font: 700 30px/1 var(--display); letter-spacing: -.03em; transform: rotate(-4deg); }
.cta h2 { font: 900 clamp(30px, 4.2vw, 52px)/1.12 var(--sans); letter-spacing: -.025em; margin: 0; }
.cta p { margin: 12px 0 0; font-size: 17px; color: var(--ink-2); max-width: 620px; }
.cta .btn-dark { padding: 16px 28px; font-size: 16px; }

/* 页脚 */
.site-foot { background: var(--dark); color: var(--dark-text); padding: 72px 0 36px; }
.wordmark { display: flex; align-items: center; gap: .14em; margin: 0; font: 700 clamp(56px, 13vw, 184px)/.9 var(--display); letter-spacing: -.05em; }
.wordmark .key { border-width: .03em; border-radius: .12em; padding: .04em .1em .07em; box-shadow: .035em .035em 0 #000; font-size: .74em; }
.signoff { margin: 28px 0 0; font: 800 clamp(20px, 2.4vw, 26px)/1.3 var(--sans); color: var(--lime); }
.foot-row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px 32px; margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--dark-line); font-size: 14px; color: var(--dark-muted); }
.foot-row nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.foot-row a { color: var(--dark-text); text-decoration: none; }
.foot-row a:hover { color: var(--lime); }

/* 文章页 */
.post-head { padding: 60px 0 4px; }
.post-head h1 { font: 900 clamp(34px, 5vw, 60px)/1.12 var(--sans); letter-spacing: -.025em; margin: 18px 0; }
.lead { font-size: clamp(17px, 1.8vw, 20px); line-height: 1.8; color: var(--ink-2); margin: 0; }
.frame { border-radius: 18px; overflow: hidden; background: #0b0a1a; margin-top: 40px; margin-bottom: 12px; box-shadow: 0 34px 60px -34px rgba(0, 0, 0, .5); }
.frame iframe { display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; }
/* 文章页：标题、正文、视频、提示词全部同一个宽度，左右对齐（用户 2026-10-17：文字挤在中间、视频两头凸出来很怪） */
.post > * { max-width: 860px; margin-left: auto; margin-right: auto; }
.post > .related { max-width: none; }
.post > p { margin-top: 18px; margin-bottom: 18px; }
.post h2 { font: 800 clamp(24px, 3vw, 32px)/1.3 var(--sans); letter-spacing: -.015em; margin-top: 80px; margin-bottom: 16px; }
.caption { display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: center; margin-top: 0; margin-bottom: 0; font-size: 14px; color: var(--muted); }
.caption a { font-weight: 700; color: var(--ink); }
sup a { text-decoration: none; font-weight: 700; font-size: .8em; padding: 0 1px; }
.note { border-left: 3px solid var(--lime); padding: 4px 0 4px 18px; margin-top: 24px; margin-bottom: 24px; color: var(--ink-2); }
.note p { margin: 0; }
.prompt { background: #121211; color: #ecebe5; border-radius: var(--r); margin-top: 22px; margin-bottom: 22px; overflow: hidden; }
.prompt-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 12px 10px 20px; border-bottom: 1px solid #2c2c2a; }
.prompt-bar span { font: 600 13.5px/1.3 var(--sans); color: var(--lime); }
.prompt-bar .btn { padding: 6px 15px; font-size: 13px; border: 1px solid #444; color: #fff; background: transparent; box-shadow: none; }
.prompt-bar .btn:hover { background: var(--lime); color: var(--ink); border-color: var(--lime); transform: none; }
.prompt pre { margin: 0; padding: 20px; max-height: 460px; overflow: auto; white-space: pre-wrap; word-break: break-word; font: 400 13.5px/1.75 var(--mono); }
.post > .demo-actions { margin-top: 18px; margin-bottom: 10px; }
.post > p.caption { margin-top: 10px; }
.refs { margin-top: 80px; padding-top: 8px; border-top: 1px solid var(--line); }
.refs h2 { font-size: 18px; margin: 18px 0 8px; }
.refs ol { padding-left: 1.3em; margin: 0; font-size: 14.5px; color: var(--muted); }
.refs li { margin: 6px 0; word-break: break-word; }
.refs li:target { background: var(--lime); color: var(--ink); }
.subscribe { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px 32px; margin-top: 88px; padding: 36px 40px; border-radius: 20px; background: var(--ink); color: #fff; }
.subscribe h2 { margin: 0; font: 800 clamp(22px, 2.6vw, 28px)/1.35 var(--sans); max-width: none; }
.subscribe p { margin: 6px 0 0; color: var(--dark-muted); }
.subscribe .btn { background: var(--lime); color: var(--ink); border: 2px solid var(--lime); }
.subscribe .btn:hover { background: #fff; border-color: #fff; }

/* 章节、日报正文、文字版 */
.chapters { list-style: none; padding: 0; margin-top: 18px; margin-bottom: 18px; border-top: 1px solid var(--ink); }
.chapters li { border-bottom: 1px solid var(--line); }
.chapters a { display: flex; gap: 22px; padding: 14px 0; text-decoration: none; font-weight: 700; }
.chapters a:hover { background: linear-gradient(90deg, rgba(200, 240, 60, .35), transparent 70%); }
.chapters time { font: 500 14px/1.7 var(--mono); color: var(--muted); min-width: 3.4em; }
.story { padding-top: 4px; }
.story h2 { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; margin-top: 64px; }
.story .num { font: 700 .62em/1 var(--display); color: var(--muted); letter-spacing: .02em; }
.jump { font: 700 13px/1 var(--display); text-decoration: none; color: var(--ink); background: var(--lime); border-radius: 999px; padding: 6px 11px; }
.jump:hover { background: var(--ink); color: var(--lime); }
.source { font-size: 14px; color: var(--muted); word-break: break-word; }
.source a { color: var(--ink-2); }
.transcript { margin: 48px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); }
.transcript summary { cursor: pointer; padding: 18px 0; font: 800 18px/1.4 var(--sans); list-style: none; display: flex; justify-content: space-between; }
.transcript summary::-webkit-details-marker { display: none; }
.transcript summary::after { content: "展开 ↓"; font: 600 14px/1.9 var(--sans); color: var(--muted); }
.transcript[open] summary::after { content: "收起 ↑"; }
.transcript h3 { font: 800 19px/1.4 var(--sans); margin: 26px 0 6px; }
.related { margin-top: 24px; }

/* YouTube：先放封面，点了才加载播放器 */
.yt { position: relative; aspect-ratio: 16 / 9; background: #111 center / cover no-repeat; display: grid; place-items: center; }
.yt button { width: 84px; height: 84px; border-radius: 50%; border: 2px solid var(--ink); background: var(--lime); box-shadow: 3px 3px 0 var(--ink); cursor: pointer; display: grid; place-items: center; transition: transform .15s ease; }
.yt button:hover { transform: scale(1.06); }
.yt button::after { content: ""; border-style: solid; border-width: 14px 0 14px 23px; border-color: transparent transparent transparent var(--ink); margin-left: 6px; }
.yt iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.yt.is-soon { padding: 20px; }
.soon { background: rgba(15, 15, 15, .82); color: #fff; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); border-radius: 14px; padding: 16px 26px; text-align: center; }
.soon p { margin: 0; font: 800 clamp(18px, 2.6vw, 24px)/1.4 var(--sans); }
.soon small { display: block; margin-top: 4px; font-size: 14px; color: #c9c6be; }

@media (max-width: 900px) {
  .today, .feature { grid-template-columns: 1fr; gap: 32px; }
  .today { padding-top: 36px; }
  .today .media { order: -1; }
  .headlines { grid-template-columns: 1fr; }
  .grid3, .lab-grid { grid-template-columns: 1fr 1fr; }
  .cta .wrap { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 640px) {
  .wrap { width: calc(100% - 32px); }
  body { font-size: 16px; }
  .top .wrap { gap: 8px; height: 58px; }
  .brand { font-size: 19px; }
  .nav-links a { padding: 7px 8px; font-size: 14px; }
  .top .btn span { display: none; }
  .top .btn { padding: 9px 11px; }
  .grid3, .lab-grid { grid-template-columns: 1fr; }
  .sec { padding-top: 72px; }
  .sec-head { flex-direction: column; align-items: flex-start; }
  .sec-head p { text-align: left; }
  .daily-row { grid-template-columns: 1fr; gap: 6px; }
  .daily-row::after { display: none; }
  .hello { flex-direction: column; gap: 18px; }
  .subscribe { padding: 28px 24px; }
  .frame { border-radius: 12px; }
  .media .play { width: 46px; height: 46px; left: 14px; bottom: 14px; }
  .media .play::after { border-width: 8px 0 8px 13px; margin-left: 4px; }
}
@media (max-width: 380px) { .nav-links a { padding: 7px 5px; } .brand { font-size: 17px; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }