/* ------------------------------------------------------------------
   vliu.info — Ryuranrin
   原 Framer 站点的静态复刻。

   排版全部走 CSS 变量。本机跑 `npm run tune` 可以开面板实时调，
   点保存会直接改写下面 type:start / type:end 之间的区块。
------------------------------------------------------------------ */

@import url('https://fonts.googleapis.com/css2?family=Special+Gothic&display=swap');

:root {
  /* ---- 颜色 ---- */
  --bg: #000;
  --fg: #fff;

  /* ---- 布局 ---- */
  --pad: 20px;
  --col: 65.7%;
  --col-max: 1180px;
}

/* == type:start ==  以下区块由 `npm run tune` 的排版面板自动改写，手改也可以 */
:root {
  --font: 'Special Gothic', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --body-size: 16px;
  --body-lh: 1.25;
  --body-tracking: 0em;
  --nav-size: 13px;
  --nav-tracking: 0em;
  --title-size: 18px;
  --title-weight: 500;
  --title-tracking: .01em;
  --case-size: 42px;
  --case-lh: .8;
  --case-tracking: 0em;
  --back-size: 18px;
}
/* == type:end == */

* { margin: 0; padding: 0; box-sizing: border-box; }

html { background: var(--bg); }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: var(--body-size);
  line-height: var(--body-lh);
  letter-spacing: var(--body-tracking);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, video, iframe { display: block; border: 0; }

/* ---------- 容器 ---------- */

.wrap  { width: var(--col); max-width: var(--col-max); margin: 0 auto; }
.bleed { width: 100%; padding: 0 var(--pad); }

/* ---------- 导航 ---------- */

.nav {
  display: flex; align-items: center; justify-content: space-between;
  font-size: var(--nav-size);
  letter-spacing: var(--nav-tracking);
  line-height: 1.1;
  padding: 12px 0;
}
.nav h1 { font-size: var(--nav-size); font-weight: 400; }
.nav-links { display: flex; gap: 20px; }
.nav a { transition: opacity .2s ease; }
.nav a:hover { opacity: .5; }
.nav--page { padding-top: 18px; }

/* ---------- 首页 hero ---------- */

.hero { width: 100%; aspect-ratio: 1.88 / 1; overflow: hidden; background: #000; }
.hero video, .hero img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- 首页项目列表 ---------- */

/* z-index：video 有独立合成层，小数像素下会盖住分隔线，需抬到上层 */
.rule { height: 2px; width: 100%; position: relative; z-index: 2; }
.rule--plain { background: #8d8d93; }
.rule--a { background: linear-gradient(180deg, #c3c3cf 0 1px, #5a29d6 1px 2px); }
.rule--b { background: linear-gradient(180deg, #6a2fd4 0 1px, #a2122f 1px 2px); }
.rule--c { background: linear-gradient(180deg, #6a2fd4 0 1px, #b3163c 1px 2px); }

.work {
  position: relative; display: grid;
  grid-template-columns: 27.5% 1fr 24.5%;
  align-items: start;
  height: 8.1vw; min-height: 108px;
  padding: 20px 0 0;
  overflow: hidden;
}
.work__tag, .work__title { padding-left: var(--pad); }
.work__tag {
  font-size: var(--nav-size);
  letter-spacing: var(--nav-tracking);
  transition: opacity .25s ease;
}
.work__title {
  font-size: var(--title-size);
  font-weight: var(--title-weight);
  letter-spacing: var(--title-tracking);
  transition: transform .35s cubic-bezier(.2, .7, .2, 1);
}
.work__thumb {
  position: absolute; top: 0; right: 0;
  height: 100%; width: 24.5%; overflow: hidden;
}
.work__thumb img, .work__thumb video {
  width: 100%; height: 100%; object-fit: cover; opacity: .95;
  transition: transform .5s cubic-bezier(.2, .7, .2, 1), opacity .3s ease;
}
.work:hover .work__title { transform: translateX(8px); }
.work:hover .work__tag { opacity: .5; }
.work:hover .work__thumb img,
.work:hover .work__thumb video { transform: scale(1.06); opacity: 1; }

/* ---------- 页脚 ---------- */

.foot {
  display: flex; align-items: flex-end; justify-content: space-between;
  font-size: var(--nav-size);
  letter-spacing: var(--nav-tracking);
  padding: 46px 0 40px;
}
.foot__mark { font-size: 22px; letter-spacing: .12em; line-height: 1; }
.foot--bleed { padding-left: var(--pad); padding-right: var(--pad); }

/* ---------- 项目页 ---------- */

.media { width: 100%; }
.media video, .media img { width: 100%; height: 100%; object-fit: cover; }

.embed { position: relative; width: 100%; aspect-ratio: 16 / 9; background: #000; }
.embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; }

.case__title {
  font-size: var(--case-size);
  font-weight: 700;
  line-height: var(--case-lh);
  letter-spacing: var(--case-tracking);
  margin: 44px 0 14px;
}

.case__meta { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.case__meta p {
  font-size: var(--body-size);
  line-height: var(--body-lh);
  letter-spacing: var(--body-tracking);
}
.case__credits p + p { margin-top: 3px; }
.case__desc { max-width: 34em; }

.grid { display: grid; gap: 10px; margin-top: 56px; }
.grid--1 { grid-template-columns: 1fr; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.ratio-4x3  { aspect-ratio: 129 / 100; }
.ratio-wide { aspect-ratio: 181 / 100; }
.ratio-16x9 { aspect-ratio: 159 / 100; }
.ratio-sq   { aspect-ratio: 96 / 100; }

.case__outro {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  margin-top: 90px; align-items: end;
}
.case__outro p {
  font-size: var(--body-size);
  line-height: var(--body-lh);
  letter-spacing: var(--body-tracking);
}

.back {
  font-size: var(--back-size);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.back:hover { opacity: .6; }

.shout {
  font-size: var(--case-size);
  font-weight: 700;
  line-height: .9;
  letter-spacing: var(--case-tracking);
  margin-top: 70px;
}

/* ---------- Daily ---------- */

.daily {
  width: 40.8%; max-width: 740px; margin: 80px auto 0;
  display: grid; gap: 20px;
}
.daily__row { display: grid; gap: 15px; }
.daily__row--a { grid-template-columns: 302fr 100fr 298fr; }
.daily__row--b { grid-template-columns: 100fr 302fr 302fr; }
.daily__row--c { grid-template-columns: 302fr 302fr 100fr; }
.daily__row > * { height: 170px; overflow: hidden; }
.daily__row video, .daily__row img { width: 100%; height: 100%; object-fit: cover; }
.daily__spacer { margin-top: 60px; }

/* ---------- Info ---------- */

.info {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  margin-top: 44px; min-height: 220px;
}
.info p {
  font-size: var(--body-size);
  line-height: var(--body-lh);
  letter-spacing: var(--body-tracking);
}
.info p + p { margin-top: 14px; }
.info__mail {
  font-size: var(--body-size);
  margin-top: 74px; display: inline-block;
}
.info__mail:hover { opacity: .6; }

/* ---------- 404 ---------- */

.nf { height: 100vh; display: grid; place-content: center; text-align: center; gap: 10px; cursor: pointer; }
.nf strong { font-size: var(--case-size); font-weight: 700; }

/* ---------- 移动端 ---------- */

@media (max-width: 900px) {
  :root {
    --col: 88%;
    --case-size: 32px;
  }

  .hero { aspect-ratio: 4 / 3; }

  .work {
    grid-template-columns: 1fr;
    height: auto; min-height: 0;
    padding: 16px 0; row-gap: 6px;
  }
  .work__thumb { position: relative; width: 100%; height: 140px; margin-top: 12px; }

  .case__meta, .case__outro, .info { grid-template-columns: 1fr; }
  .case__outro { margin-top: 50px; gap: 30px; }
  .shout { font-size: var(--case-size); }

  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }

  .daily { width: 88%; margin-top: 40px; }
  .daily__row > * { height: 110px; }
  .info__mail { margin-top: 30px; }
}