/* 黛诗科技 dayshi.com
   色：墨分五色——焦、浓、重、淡、清，黛是远山那一重；宣纸为面；朱砂只落印。
   形：远山脊线、一笔横、墨边、朱印。
   构：墨 · 笔 · 山 · 印。 */

:root {
  --ink-9: #0a1116;   /* 焦墨 */
  --ink-8: #10191f;   /* 浓墨 */
  --ink-7: #16232b;   /* 黛：主底 */
  --ink-6: #22333d;   /* 重墨 */
  --ink-5: #39515d;
  --ink-4: #587380;   /* 淡墨 */
  --ink-3: #8aa3ae;   /* 清墨 / 山岚 */
  --ink-2: #b9c9cf;
  --paper: #f3eee4;   /* 宣纸 */
  --paper-2: #e9e2d4;
  --paper-3: #d6cdbc;
  --zhu: #c0392b;     /* 朱砂 */
  --zhu-lit: #e0604b;

  --brush: "Ma Shan Zheng", "STKaiti", "KaiTi", "Noto Serif SC", serif;
  --song: "Noto Serif SC", "Songti SC", "STSong", "Source Han Serif SC", "SimSun", serif;
  --latin: "Cormorant Garamond", "Noto Serif SC", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --gutter: clamp(20px, 5vw, 72px);
  --mast-h: 72px;
  --ease: cubic-bezier(.2, .7, .1, 1);
  --ease-stamp: cubic-bezier(.2, 1.5, .4, 1);
}

[data-tone="dark"] {
  --bg: var(--ink-7);
  --fg: var(--paper);
  --muted: var(--ink-3);
  --line: rgba(243, 238, 228, .16);
  --raise: var(--ink-6);
  --accent: var(--zhu-lit);
}
[data-tone="light"] {
  --bg: var(--paper);
  --fg: var(--ink-8);
  --muted: #5b6b73;
  --line: rgba(16, 25, 31, .16);
  --raise: var(--paper-2);
  --accent: var(--zhu);
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--ink-7);
  color: var(--paper);
  font-family: var(--song);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.9;
  line-break: strict;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
i { font-style: normal; }
::selection { background: var(--zhu); color: var(--paper); }
:focus-visible { outline: 2px solid var(--zhu-lit); outline-offset: 4px; }

.brush { font-family: var(--brush); font-weight: 400; }
.mono { font-family: var(--mono); }
.skip {
  position: fixed; left: 12px; top: -80px; z-index: 100;
  padding: 8px 16px; background: var(--paper); color: var(--ink-8);
}
.skip:focus { top: 12px; }

/* 纸纹：极淡的噪点，压住大面积纯色的数码感（CSS 里不能写中文，这个 SVG 只有滤镜） */
.grain::after, .hero::after, .act--ink::after, .foot::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 .5 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: .06;
}

/* ───────── 页眉 ───────── */
:root, [data-bar="dark"] { --bar-fg: var(--paper); --bar-bg: rgba(22, 35, 43, .88); }
[data-bar="light"] { --bar-fg: var(--ink-8); --bar-bg: rgba(243, 238, 228, .9); }
.mast {
  position: fixed; z-index: 50;
  top: 0; left: 0; right: 0;
  height: var(--mast-h);
  padding: 0 var(--gutter);
  display: flex; align-items: center;
  color: var(--bar-fg);
  background-color: var(--bar-bg);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  transition: color .5s var(--ease), background-color .5s var(--ease), opacity 1s var(--ease);
}
.at-top .mast { background-color: transparent; -webkit-backdrop-filter: none; backdrop-filter: none; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark { width: 34px; height: 17px; fill: currentColor; }
.logo-name { font-size: 26px; letter-spacing: .1em; line-height: 1; margin-top: -2px; }
.logo-latin { font-family: var(--latin); font-style: italic; font-weight: 500; font-size: 21px; opacity: .7; }

/* 章节栏：差值混合，压在墨上是纸色，压在纸上是墨色；左侧一条细线随滚动灌满墨 */
.rail {
  position: fixed; z-index: 51;
  right: clamp(14px, 2.4vw, 36px); top: 50%;
  transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 18px;
  padding-left: 14px;
  color: #fff;
  mix-blend-mode: difference;
  transition: opacity 1s var(--ease);
}
.rail-line {
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 1px; background: rgba(255, 255, 255, .28);
}
.rail-line b {
  position: absolute; left: 0; top: 0; width: 100%;
  height: calc(var(--progress, 0) * 100%);
  background: #fff;
}
.rail a {
  position: relative; display: block;
  width: 1.4em; text-align: center;
  font-size: 22px; line-height: 1.3;
  opacity: .5;
  transition: opacity .4s var(--ease);
}
.rail span {
  position: absolute; right: calc(100% + 18px); top: 50%;
  transform: translate(8px, -50%);
  font-family: var(--song);
  font-size: 12px; letter-spacing: .24em; white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity .4s var(--ease), transform .4s var(--ease);
}
.rail a:hover, .rail a:focus-visible, .rail a.is-on { opacity: 1; }
.rail a:hover span, .rail a:focus-visible span { opacity: 1; transform: translate(0, -50%); }

/* 入场前页眉与章节栏不露面 */
.js .mast, .js .rail { opacity: 0; pointer-events: none; }
.js.is-ready .mast, .js.is-ready .rail { opacity: 1; pointer-events: auto; }

/* ───────── 卷首 ───────── */
.hero {
  position: relative; z-index: 1; overflow: hidden;
  min-height: 100vh; min-height: 100svh;
  background: var(--paper);
  color: var(--paper);
  transition: background-color .6s linear;
}
.is-flooded .hero, html:not(.js) .hero { background: var(--ink-7); }
.hero-ink { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hero-still { position: absolute; left: 0; right: 0; bottom: 0; width: 100%; height: 48%; display: none; }
html:not(.js) .hero-still, .hero.no-canvas .hero-still { display: block; }
html:not(.js) .hero-ink, .hero.no-canvas .hero-ink { display: none; }
/* 胶片开场：盖在画布上面放，交接时淡出，露出底下已经画好的山；放完就卸掉释放解码器 */
.hero-film {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; display: none; opacity: 0; pointer-events: none;
}
.js.has-film .hero-film { display: block; opacity: 1; }
.js.has-film.is-handoff .hero-film { opacity: 0; transition: opacity .9s linear; }
.js.film-done .hero-film { display: none; }

.hero-stage {
  position: absolute; z-index: 2;
  left: 50%; top: 43%;
  transform: translate(-50%, -50%);
  width: max-content; max-width: calc(100% - var(--gutter) * 2);
  text-align: center;
  text-shadow: 0 2px 28px rgba(10, 17, 22, .55);
}
.hero-title {
  position: relative; display: inline-block;
  font-size: clamp(132px, 25vw, 360px);
  line-height: 1; letter-spacing: .06em;
  margin-left: .06em;
  color: var(--paper);
}
.hero-char { display: inline-block; }
.hero-title.is-wet { filter: url(#wet); }
.hero-burst {
  position: absolute; z-index: -1;
  left: 50%; top: 50%;
  width: 210%; height: 210%;
  transform: translate(-50%, -50%) scale(.3);
  fill: rgba(243, 238, 228, .22);
  opacity: 0;
  pointer-events: none;
}
.seal {
  display: block;
  fill: var(--paper);
  overflow: visible;
}
.seal-bg { fill: var(--zhu); filter: url(#ink); }
.seal-rim { fill: none; stroke: rgba(243, 238, 228, .55); stroke-width: 1.4; }
.seal-text { fill: var(--paper); font-size: 40px; text-anchor: middle; }
.seal--hero {
  position: absolute;
  width: clamp(44px, 6.2vw, 88px); height: auto;
  left: calc(100% + .1em); bottom: .2em;
  transform: rotate(-5deg);
}
.hero-verse {
  margin-top: clamp(14px, 2.4vh, 28px);
  font-size: clamp(20px, 2.6vw, 36px);
  font-weight: 600; letter-spacing: .22em;
  text-indent: .22em;
  white-space: nowrap;
}
.hero-verse i { display: inline-block; }
.hero-verse .punc { letter-spacing: 0; margin-right: .22em; }
.hero-verse .stop { color: var(--zhu-lit); }
.hero-sign {
  margin-top: clamp(16px, 2.6vh, 30px);
  font-size: 13px; letter-spacing: .5em; text-indent: .5em;
  color: var(--ink-3);
}
.hero-en {
  margin-top: 6px;
  font-family: var(--latin); font-style: italic; font-weight: 500;
  font-size: clamp(18px, 1.8vw, 24px);
  color: var(--ink-3);
}
.hero-cue {
  position: absolute; z-index: 2;
  left: 50%; bottom: clamp(24px, 4vh, 48px);
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  font-size: 12px; letter-spacing: .4em; text-indent: .4em;
  color: var(--ink-3);
  transition: color .4s var(--ease);
}
.hero-cue i {
  width: 1px; height: 54px;
  background: linear-gradient(var(--paper), var(--paper)) 0 0 / 100% 40% no-repeat, rgba(243, 238, 228, .18);
  animation: cue 2.4s var(--ease) infinite;
}
.hero-cue:hover { color: var(--paper); }
@keyframes cue { from { background-position: 0 -40px; } to { background-position: 0 60px; } }
.hero-hint {
  position: absolute; z-index: 2;
  left: var(--gutter); bottom: clamp(28px, 4.6vh, 52px);
  font-size: 12px; letter-spacing: .3em;
  color: var(--ink-4);
}

/* 卷首入场：墨泼满（画布）→ 大字砸下来、湿墨收干 → 朱印盖下 → 一句诗洇出来 → 其余淡入 */
.js .hero-title { opacity: 0; transform: scale(1.4); }
.js.is-titled .hero-title {
  opacity: 1; transform: none;
  transition: opacity .25s linear, transform .5s cubic-bezier(.1, .9, .2, 1);
}
.js.is-titled .hero-burst { animation: burst .9s cubic-bezier(.1, .7, .3, 1) forwards; }
@keyframes burst {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(.35); }
  12% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1.08); }
}
.js .seal--hero { opacity: 0; transform: scale(2) rotate(-14deg); }
.js.is-sealed .seal--hero {
  opacity: 1; transform: rotate(-5deg);
  transition: opacity .12s linear, transform .38s var(--ease-stamp);
}
.js .hero-verse i { opacity: 0; filter: blur(9px); transform: translateY(.28em); }
.js.is-versed .hero-verse i {
  opacity: 1; filter: none; transform: none;
  transition: opacity .7s var(--ease), filter .9s var(--ease), transform .9s var(--ease);
  transition-delay: calc(var(--i) * .07s);
}
.js .hero-sign, .js .hero-en, .js .hero-cue, .js .hero-hint { opacity: 0; }
.js.is-ready .hero-sign, .js.is-ready .hero-en, .js.is-ready .hero-cue, .js.is-ready .hero-hint {
  opacity: 1; transition: opacity 1.4s var(--ease);
}
.js.is-ready .hero-cue { transition-delay: .3s; }
.js.is-ready .hero-hint { transition-delay: .9s; }

/* ───────── 墨边：暗章的上沿是撕开的毛边，下沿挂着墨滴。
   两种边都画在相邻的亮章里（亮章顶部挂上一章的墨滴，亮章底部放下一章的毛边），
   暗章自己 overflow:hidden，伸出去的部分会被裁掉。 ───────── */
.ink-edge {
  position: absolute; left: 0; right: 0; z-index: 2;
  width: 100%; height: clamp(44px, 6vw, 96px);
  display: block; pointer-events: none;
  fill: var(--ink-7);
}
.ink-edge--drip { top: -1px; }
.ink-edge--top { bottom: -1px; transform: scaleY(-1); }

/* ───────── 四章共用骨架 ───────── */
.act {
  position: relative;
  padding: clamp(96px, 13vw, 200px) var(--gutter);
  background: var(--bg); color: var(--fg);
}
#bi { padding-top: 0; }
.act-inner {
  position: relative; z-index: 1;
  max-width: 1320px; margin: 0 auto;
  padding-right: clamp(0px, 3.4vw, 48px);
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  column-gap: clamp(28px, 6vw, 96px);
}
.act-mark {
  position: sticky; top: 14vh;
  align-self: start;
  display: flex; align-items: flex-start; gap: clamp(10px, 1.6vw, 26px);
}
.act-char {
  font-size: clamp(170px, 24vw, 360px);
  line-height: .95;
  margin-left: -.04em;
  filter: url(#ink);
}
.act-tag {
  writing-mode: vertical-rl;
  display: flex; gap: 1.4em;
  padding-top: 1em;
  font-size: 13px; font-weight: 400; letter-spacing: .42em; line-height: 1;
  color: var(--muted);
  white-space: nowrap;
}
.act-tag span:first-child { color: var(--accent); }
.act-tag [lang="en"] { font-family: var(--latin); font-style: italic; font-size: 17px; letter-spacing: .08em; }
.act--wide .act-mark { position: static; }
/* 巨字：像墨从上往下灌满一个字 */
.js .act-char { clip-path: inset(0 0 100% 0); transition: clip-path 1.4s cubic-bezier(.5, 0, .1, 1); }
.js .act-mark.is-in .act-char { clip-path: inset(-10%); }

.act-body { padding-top: clamp(8px, 3vw, 44px); min-width: 0; }
.lede {
  font-size: clamp(23px, 2.9vw, 42px);
  font-weight: 600; line-height: 1.62; letter-spacing: .03em;
}
.stroke {
  display: block;
  width: min(100%, 520px); height: clamp(16px, 2.2vw, 28px);
  margin-top: clamp(18px, 2.4vw, 30px);
  fill: var(--fg);
  overflow: visible;
}
.prose {
  max-width: 33em;
  margin-top: clamp(28px, 3.4vw, 48px);
  color: var(--muted);
  text-align: justify;
}
h3 { font-weight: 900; letter-spacing: .06em; line-height: 1.3; }

/* 滚动显现：像墨从纸背洇过来——先是模糊的一团，再清晰 */
.js [data-r] {
  opacity: 0; transform: translateY(22px); filter: blur(7px);
  transition: opacity 1s var(--ease), transform 1.1s var(--ease), filter 1.1s var(--ease);
  transition-delay: var(--d, 0s);
}
.js [data-r].is-in { opacity: 1; transform: none; filter: none; }
/* 横笔：不用洇，用「写」——从左到右一笔扫过。跟着前面那句 lede 显现：
   它自己裁到零宽时 IntersectionObserver 永远报不相交，不能单独观察 */
.js .stroke {
  clip-path: inset(-20% 100% -20% 0);
  transition: clip-path .9s cubic-bezier(.3, .6, .1, 1) .25s;
}
.js .lede.is-in + .stroke { clip-path: inset(-20% -2% -20% 0); }

/* ───────── 墨：三则 ───────── */
.tenets {
  margin-top: clamp(64px, 8vw, 120px);
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.6vw, 40px);
}
.tenets li { border-top: 1px solid var(--fg); padding-top: 20px; }
.tenet-no { display: block; font-size: 13px; letter-spacing: .3em; color: var(--accent); }
.tenets h3 { margin-top: 10px; font-size: clamp(34px, 3.2vw, 46px); letter-spacing: .08em; }
.tenets p { margin-top: 8px; font-size: 15px; color: var(--muted); }

/* ───────── 笔：目录 ───────── */
.index { margin-top: clamp(56px, 7vw, 104px); border-bottom: 1px solid var(--line); }
.index-row {
  position: relative;
  display: grid;
  grid-template-columns: 3.6em minmax(7em, 1fr) minmax(0, 1.7fr);
  column-gap: clamp(14px, 2vw, 30px);
  align-items: baseline;
  padding: clamp(22px, 2.4vw, 32px) 0;
  border-top: 1px solid var(--line);
}
.index-row::before {
  content: ""; position: absolute; left: 0; right: 0; top: -1px; height: 1px;
  background: var(--fg);
  transform: scaleX(0); transform-origin: 0 50%;
  transition: transform .8s var(--ease);
}
.index-row:hover::before { transform: scaleX(1); }
.index-no { font-size: 13px; letter-spacing: .2em; color: var(--muted); transition: color .4s var(--ease); }
.index-row:hover .index-no { color: var(--accent); }
.index-row h3 { font-size: clamp(22px, 2.1vw, 30px); transition: transform .6s var(--ease); }
.index-row:hover h3 { transform: translateX(10px); }
.index-row p { font-size: 16px; line-height: 1.85; color: var(--muted); }
.tags {
  display: block; margin-top: 10px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; line-height: 1.6;
  color: var(--muted); opacity: .8;
}

/* ───────── 山：夜山 + 会跳的一行字 + 精灵表 ───────── */
.act--ink { overflow: hidden; z-index: 1; }
.act--ink::after { opacity: .05; }
.scene {
  position: absolute; left: 0; right: 0; top: 0;
  height: min(100vh, 960px);
  overflow: hidden; pointer-events: none;
}
.scene::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 38%;
  background: linear-gradient(transparent, var(--ink-7));
}
.scene-moon {
  position: absolute; right: 12%; top: 12%;
  width: clamp(90px, 11vw, 170px); height: auto;
  opacity: .9;
  transform: translateY(calc(var(--p, 0) * 40px));
}
.scene-ridge {
  position: absolute; left: -2%; right: -2%; bottom: 0;
  width: 104%; height: 52%;
  transform: translateY(calc(var(--p, 0) * var(--z) * -220px));
}
.scene-mist {
  position: absolute;
  height: 22%; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(243, 238, 228, .14), transparent);
  filter: blur(24px);
  animation: drift 16s ease-in-out infinite alternate;
}
.scene-mist--a { left: -10%; bottom: 24%; width: 70%; }
.scene-mist--b { right: -16%; bottom: 10%; width: 64%; animation-duration: 21s; animation-delay: -8s; }
@keyframes drift { from { transform: translateX(-4%); } to { transform: translateX(6%); } }

.play { position: relative; grid-column: 1 / -1; margin-top: clamp(64px, 9vw, 132px); }
.splash {
  position: absolute; z-index: -1;
  left: -6%; top: 50%;
  width: clamp(360px, 52vw, 760px); height: auto;
  transform: translateY(-50%) scale(.4);
  fill: rgba(243, 238, 228, .07);
  opacity: 0;
  pointer-events: none;
}
.js .play.is-in .splash { animation: splash 1.1s cubic-bezier(.1, .8, .2, 1) forwards; }
@keyframes splash {
  0% { opacity: 0; transform: translateY(-50%) scale(.4); }
  20% { opacity: 1; }
  100% { opacity: 1; transform: translateY(-50%) scale(1); }
}
.play-line {
  font-size: clamp(50px, 9.2vw, 136px);
  line-height: 1.2; letter-spacing: .03em;
  user-select: none; -webkit-user-select: none;
}
.play-line > span { display: inline-block; white-space: nowrap; }
.play-line i { position: relative; display: inline-block; transform-origin: 50% 92%; cursor: default; }
.play-line .stop { color: var(--accent); }
.play-line i.is-jump { animation: jump .58s cubic-bezier(.3, .6, .4, 1); }
/* 蓄力 → 腾空 → 滞空 → 落地压扁 → 回正 */
@keyframes jump {
  0% { transform: none; }
  14% { transform: scale(1.12, .84); }
  40% { transform: translateY(-.4em) scale(.94, 1.1); }
  54% { transform: translateY(-.46em); }
  80% { transform: scale(1.1, .88); }
  100% { transform: none; }
}
/* 落地时溅起的一小片墨点 */
.splat {
  position: absolute; left: 50%; bottom: -.05em;
  width: 1.3em; height: .5em;
  transform: translateX(-50%);
  fill: var(--ink-3);
  pointer-events: none;
  animation: splat .5s ease-out .3s forwards;
  opacity: 0;
}
@keyframes splat {
  0% { opacity: .8; transform: translateX(-50%) scale(.3, .2); }
  100% { opacity: 0; transform: translateX(-50%) scale(1, 1); }
}
.play-note {
  margin-top: 22px;
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 22px;
  font-size: 13px; letter-spacing: .3em; color: var(--muted);
}
.play-note .mono { font-size: 11.5px; letter-spacing: .16em; opacity: .8; }

.sheet {
  grid-column: 1 / -1;
  margin-top: clamp(56px, 7vw, 104px);
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line); border-left: 1px solid var(--line);
}
.sheet li {
  position: relative;
  min-height: clamp(200px, 19vw, 260px);
  padding: 20px clamp(18px, 2.2vw, 30px) 32px;
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background-color: transparent;
  transition: opacity 1s var(--ease), transform 1.1s var(--ease), filter 1.1s var(--ease), background-color .5s var(--ease);
}
.sheet li::before {
  content: ""; position: absolute; left: -6px; top: -6px;
  width: 11px; height: 11px;
  background:
    linear-gradient(var(--fg), var(--fg)) 50% 0 / 1px 100% no-repeat,
    linear-gradient(var(--fg), var(--fg)) 0 50% / 100% 1px no-repeat;
  opacity: .7;
}
.sheet li:hover { background-color: rgba(243, 238, 228, .05); }
.cell-no { display: block; font-size: 11.5px; letter-spacing: .16em; color: var(--muted); transition: color .4s var(--ease); }
.sheet li:hover .cell-no { color: var(--accent); }
.sheet h3 { margin-top: clamp(36px, 4.4vw, 64px); font-size: clamp(22px, 2vw, 28px); }
.sheet p { margin-top: 10px; font-size: 15px; line-height: 1.85; color: var(--muted); }

/* ───────── 作品：一块「台」放图，台下落款 ───────── */
.works {
  position: relative; z-index: 1;
  max-width: 1320px;
  margin: clamp(80px, 11vw, 160px) auto 0;
  padding-right: clamp(0px, 3.4vw, 48px);
}
.works-head {
  display: flex; align-items: baseline; gap: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--fg);
  font-size: 13px; font-weight: 400; letter-spacing: .42em;
  color: var(--muted);
}
.works-head .brush { font-size: 30px; letter-spacing: .12em; color: var(--fg); line-height: 1; }
.works-head [lang="en"] { font-family: var(--latin); font-style: italic; font-size: 17px; letter-spacing: .06em; }
.works-head b { margin-left: auto; font-weight: 400; letter-spacing: .3em; color: var(--accent); }
.works-grid {
  margin-top: clamp(28px, 3.4vw, 48px);
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(52px, 6.4vw, 92px) clamp(24px, 3vw, 44px);
}
.work--wide { grid-column: 1 / -1; }
.work-link { display: block; }
.work--wide .work-link {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  column-gap: clamp(28px, 5vw, 80px);
  align-items: end;
}

.stage {
  position: relative; overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--ink-7);
  box-shadow: 0 30px 60px -30px rgba(10, 17, 22, .55);
}
.work--wide .stage { aspect-ratio: 16 / 10; }
[data-tone="dark"] .stage { background: var(--ink-8); box-shadow: 0 0 0 1px var(--line); }
.stage img { display: block; }
.shot { position: absolute; height: auto; transition: transform 1.1s var(--ease); }
.work-link:hover .shot { transform: translateY(-3%); }
.work-link:hover .shot:nth-child(2) { transition-delay: .06s; }
.work-link:hover .shot:nth-child(3) { transition-delay: .12s; }

.stage--win .shot { width: 42%; filter: drop-shadow(0 22px 40px rgba(0, 0, 0, .5)); }
.stage--win .shot:nth-child(1) { left: 48%; top: 26%; }
.stage--win .shot:nth-child(2) { left: 11%; top: 10%; }

.stage--phones .shot {
  width: 29%;
  border-radius: clamp(8px, 1.1vw, 15px);
  box-shadow: 0 0 0 1px rgba(243, 238, 228, .13), 0 22px 44px rgba(0, 0, 0, .5);
}
.stage--phones .shot:nth-child(1) { left: 5%; top: 14%; }
.stage--phones .shot:nth-child(2) { left: 35.5%; top: 6%; }
.stage--phones .shot:nth-child(3) { left: 66%; top: 24%; }
@media (min-width: 881px) {
  .work--wide .stage--phones .shot { width: 26%; }
  .work--wide .stage--phones .shot:nth-child(1) { left: 8%; top: 12%; }
  .work--wide .stage--phones .shot:nth-child(2) { left: 37%; top: 5%; }
  .work--wide .stage--phones .shot:nth-child(3) { left: 66%; top: 22%; }
}

.stage--alpha {
  background: linear-gradient(90deg, var(--ink-7) 50%, var(--paper-2) 50%);
  box-shadow: inset 0 0 0 1px var(--line);
}
.stage--alpha img { position: absolute; height: auto; transition: transform 1.1s var(--ease); }
.stage--alpha .a1 { left: 7%; top: 13%; width: 36%; }
.stage--alpha .a2 { left: 34%; top: 21%; width: 32%; }
.stage--alpha .a3 { left: 49%; top: 42%; width: 46%; }
.work-link:hover .stage--alpha .a2 { transform: translateY(-5%); }

.stage--frames {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr; grid-template-rows: 1fr 1fr;
}
.stage--frames > * {
  position: relative; min-width: 0; min-height: 0;
  box-shadow: inset -1px -1px 0 rgba(243, 238, 228, .14);
}
.stage--frames .live { grid-row: 1 / span 2; }
.stage--frames img { position: absolute; inset: 9%; width: 82%; height: 82%; object-fit: contain; }
.stage--frames figcaption {
  position: absolute; left: 10px; top: 7px;
  font-size: 10.5px; letter-spacing: .14em; line-height: 1.6;
  color: var(--ink-3);
}

.work-text { padding-top: 24px; }
.work--wide .work-text { padding: 0 0 4px; }
.work-meta {
  display: flex; align-items: center; gap: 12px;
  font-size: 11.5px; letter-spacing: .14em;
  color: var(--muted);
}
.work-meta img { width: 40px; height: 40px; border-radius: 10px; }
.work h4 {
  position: relative; display: inline-block;
  margin-top: 14px;
  font-size: clamp(26px, 2.7vw, 40px);
  font-weight: 900; line-height: 1.25; letter-spacing: .04em;
}
/* 悬停时在标题下写一笔横 */
.work h4::after {
  content: ""; position: absolute; left: -.04em; right: -.1em; bottom: -.1em;
  height: .3em;
  background: var(--accent);
  -webkit-mask: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1000 84' preserveAspectRatio='none'><path d='M0.0 23.5 L0.0 23.5 L8.3 22.3 L16.7 21.6 L25.0 18.3 L33.3 15.4 L41.7 15.5 L50.0 13.4 L58.3 12.4 L66.7 12.5 L75.0 10.9 L83.3 10.2 L91.7 9.5 L100.0 7.8 L108.3 7.1 L116.7 7.7 L125.0 6.0 L133.3 7.0 L141.7 8.5 L150.0 7.1 L158.3 7.6 L166.7 8.7 L175.0 10.1 L183.3 10.2 L191.7 8.8 L200.0 8.2 L208.3 8.1 L216.7 9.4 L225.0 9.5 L233.3 7.7 L241.7 7.6 L250.0 7.7 L258.3 9.4 L266.7 11.1 L275.0 10.5 L283.3 9.2 L291.7 9.3 L300.0 8.9 L308.3 7.8 L316.7 7.4 L325.0 9.0 L333.3 9.2 L341.7 7.7 L350.0 8.6 L358.3 7.8 L366.7 8.6 L375.0 10.7 L383.3 10.3 L391.7 8.5 L400.0 7.4 L408.3 7.1 L416.7 8.3 L425.0 9.4 L433.3 8.1 L441.7 8.2 L450.0 7.8 L458.3 10.7 L466.7 13.0 L475.0 12.3 L483.3 12.5 L491.7 10.7 L500.0 10.3 L508.3 10.6 L516.7 10.8 L525.0 10.8 L533.3 12.1 L541.7 14.3 L550.0 16.3 L558.3 14.5 L566.7 16.0 L575.0 14.4 L583.3 13.6 L591.7 13.0 L600.0 13.3 L608.3 11.8 L616.7 13.3 L625.0 14.1 L633.3 14.0 L641.7 13.7 L650.0 15.5 L658.3 14.1 L666.7 13.4 L675.0 14.7 L683.3 16.3 L691.7 17.0 L700.0 17.9 L708.3 18.2 L716.7 19.8 L725.0 20.1 L733.3 18.8 L741.7 18.8 L750.0 18.7 L758.3 19.7 L766.7 19.8 L775.0 22.6 L783.3 22.7 L791.7 23.0 L800.0 23.5 L808.3 22.7 L816.7 21.9 L825.0 19.6 L833.3 19.4 L841.7 19.4 L850.0 18.6 L858.3 17.5 L866.7 17.4 L875.0 16.8 L883.3 19.1 L891.7 19.9 L900.0 22.4 L908.3 23.7 L916.7 24.6 L925.0 24.7 L933.3 26.8 L941.7 30.4 L950.0 34.0 L958.3 35.0 L966.7 36.3 L975.0 38.3 L983.3 39.1 L991.7 43.0 L1000.0 44.7 L1000.0 42.6 L991.7 45.8 L983.3 48.7 L975.0 49.9 L966.7 50.9 L958.3 48.1 L950.0 47.2 L941.7 50.6 L933.3 52.5 L925.0 56.0 L916.7 57.0 L908.3 58.7 L900.0 61.1 L891.7 61.7 L883.3 63.7 L875.0 62.9 L866.7 63.7 L858.3 61.1 L850.0 60.6 L841.7 57.3 L833.3 53.2 L825.0 50.7 L816.7 49.9 L808.3 46.8 L800.0 48.1 L791.7 48.3 L783.3 48.8 L775.0 47.7 L766.7 48.9 L758.3 47.8 L750.0 44.8 L741.7 47.3 L733.3 50.1 L725.0 51.6 L716.7 50.1 L708.3 49.7 L700.0 50.6 L691.7 50.8 L683.3 50.9 L675.0 49.1 L666.7 49.5 L658.3 51.2 L650.0 50.6 L641.7 51.3 L633.3 49.8 L625.0 49.3 L616.7 48.8 L608.3 49.8 L600.0 50.5 L591.7 49.9 L583.3 48.0 L575.0 48.6 L566.7 48.3 L558.3 49.5 L550.0 48.0 L541.7 50.9 L533.3 52.5 L525.0 52.7 L516.7 52.3 L508.3 52.2 L500.0 51.2 L491.7 53.6 L483.3 53.6 L475.0 54.4 L466.7 53.0 L458.3 50.7 L450.0 50.5 L441.7 51.8 L433.3 51.3 L425.0 49.8 L416.7 50.1 L408.3 52.6 L400.0 51.6 L391.7 54.4 L383.3 56.0 L375.0 56.9 L366.7 56.5 L358.3 53.3 L350.0 52.1 L341.7 54.6 L333.3 56.5 L325.0 57.6 L316.7 59.0 L308.3 59.2 L300.0 59.2 L291.7 58.2 L283.3 59.5 L275.0 59.3 L266.7 58.9 L258.3 61.0 L250.0 60.0 L241.7 60.9 L233.3 62.8 L225.0 61.5 L216.7 62.2 L208.3 61.3 L200.0 61.9 L191.7 61.4 L183.3 60.0 L175.0 61.6 L166.7 60.0 L158.3 61.4 L150.0 61.9 L141.7 62.5 L133.3 63.1 L125.0 63.2 L116.7 65.4 L108.3 67.3 L100.0 66.2 L91.7 66.2 L83.3 65.8 L75.0 65.4 L66.7 66.0 L58.3 64.3 L50.0 62.7 L41.7 63.0 L33.3 62.1 L25.0 61.5 L16.7 59.8 L8.3 56.3 L0.0 54.3Z'/></svg>") no-repeat 0 50% / 100% 100%;
  mask: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1000 84' preserveAspectRatio='none'><path d='M0.0 23.5 L0.0 23.5 L8.3 22.3 L16.7 21.6 L25.0 18.3 L33.3 15.4 L41.7 15.5 L50.0 13.4 L58.3 12.4 L66.7 12.5 L75.0 10.9 L83.3 10.2 L91.7 9.5 L100.0 7.8 L108.3 7.1 L116.7 7.7 L125.0 6.0 L133.3 7.0 L141.7 8.5 L150.0 7.1 L158.3 7.6 L166.7 8.7 L175.0 10.1 L183.3 10.2 L191.7 8.8 L200.0 8.2 L208.3 8.1 L216.7 9.4 L225.0 9.5 L233.3 7.7 L241.7 7.6 L250.0 7.7 L258.3 9.4 L266.7 11.1 L275.0 10.5 L283.3 9.2 L291.7 9.3 L300.0 8.9 L308.3 7.8 L316.7 7.4 L325.0 9.0 L333.3 9.2 L341.7 7.7 L350.0 8.6 L358.3 7.8 L366.7 8.6 L375.0 10.7 L383.3 10.3 L391.7 8.5 L400.0 7.4 L408.3 7.1 L416.7 8.3 L425.0 9.4 L433.3 8.1 L441.7 8.2 L450.0 7.8 L458.3 10.7 L466.7 13.0 L475.0 12.3 L483.3 12.5 L491.7 10.7 L500.0 10.3 L508.3 10.6 L516.7 10.8 L525.0 10.8 L533.3 12.1 L541.7 14.3 L550.0 16.3 L558.3 14.5 L566.7 16.0 L575.0 14.4 L583.3 13.6 L591.7 13.0 L600.0 13.3 L608.3 11.8 L616.7 13.3 L625.0 14.1 L633.3 14.0 L641.7 13.7 L650.0 15.5 L658.3 14.1 L666.7 13.4 L675.0 14.7 L683.3 16.3 L691.7 17.0 L700.0 17.9 L708.3 18.2 L716.7 19.8 L725.0 20.1 L733.3 18.8 L741.7 18.8 L750.0 18.7 L758.3 19.7 L766.7 19.8 L775.0 22.6 L783.3 22.7 L791.7 23.0 L800.0 23.5 L808.3 22.7 L816.7 21.9 L825.0 19.6 L833.3 19.4 L841.7 19.4 L850.0 18.6 L858.3 17.5 L866.7 17.4 L875.0 16.8 L883.3 19.1 L891.7 19.9 L900.0 22.4 L908.3 23.7 L916.7 24.6 L925.0 24.7 L933.3 26.8 L941.7 30.4 L950.0 34.0 L958.3 35.0 L966.7 36.3 L975.0 38.3 L983.3 39.1 L991.7 43.0 L1000.0 44.7 L1000.0 42.6 L991.7 45.8 L983.3 48.7 L975.0 49.9 L966.7 50.9 L958.3 48.1 L950.0 47.2 L941.7 50.6 L933.3 52.5 L925.0 56.0 L916.7 57.0 L908.3 58.7 L900.0 61.1 L891.7 61.7 L883.3 63.7 L875.0 62.9 L866.7 63.7 L858.3 61.1 L850.0 60.6 L841.7 57.3 L833.3 53.2 L825.0 50.7 L816.7 49.9 L808.3 46.8 L800.0 48.1 L791.7 48.3 L783.3 48.8 L775.0 47.7 L766.7 48.9 L758.3 47.8 L750.0 44.8 L741.7 47.3 L733.3 50.1 L725.0 51.6 L716.7 50.1 L708.3 49.7 L700.0 50.6 L691.7 50.8 L683.3 50.9 L675.0 49.1 L666.7 49.5 L658.3 51.2 L650.0 50.6 L641.7 51.3 L633.3 49.8 L625.0 49.3 L616.7 48.8 L608.3 49.8 L600.0 50.5 L591.7 49.9 L583.3 48.0 L575.0 48.6 L566.7 48.3 L558.3 49.5 L550.0 48.0 L541.7 50.9 L533.3 52.5 L525.0 52.7 L516.7 52.3 L508.3 52.2 L500.0 51.2 L491.7 53.6 L483.3 53.6 L475.0 54.4 L466.7 53.0 L458.3 50.7 L450.0 50.5 L441.7 51.8 L433.3 51.3 L425.0 49.8 L416.7 50.1 L408.3 52.6 L400.0 51.6 L391.7 54.4 L383.3 56.0 L375.0 56.9 L366.7 56.5 L358.3 53.3 L350.0 52.1 L341.7 54.6 L333.3 56.5 L325.0 57.6 L316.7 59.0 L308.3 59.2 L300.0 59.2 L291.7 58.2 L283.3 59.5 L275.0 59.3 L266.7 58.9 L258.3 61.0 L250.0 60.0 L241.7 60.9 L233.3 62.8 L225.0 61.5 L216.7 62.2 L208.3 61.3 L200.0 61.9 L191.7 61.4 L183.3 60.0 L175.0 61.6 L166.7 60.0 L158.3 61.4 L150.0 61.9 L141.7 62.5 L133.3 63.1 L125.0 63.2 L116.7 65.4 L108.3 67.3 L100.0 66.2 L91.7 66.2 L83.3 65.8 L75.0 65.4 L66.7 66.0 L58.3 64.3 L50.0 62.7 L41.7 63.0 L33.3 62.1 L25.0 61.5 L16.7 59.8 L8.3 56.3 L0.0 54.3Z'/></svg>") no-repeat 0 50% / 100% 100%;
  clip-path: inset(0 100% 0 0);
  transition: clip-path .7s cubic-bezier(.3, .6, .1, 1);
}
.work-link:hover h4::after { clip-path: inset(0 -2% 0 0); }
.work h4 small {
  margin-left: .7em;
  font-size: .46em; font-weight: 600; letter-spacing: .16em;
  color: var(--muted);
  white-space: nowrap;
}
.work-line { margin-top: 10px; font-size: clamp(17px, 1.5vw, 20px); font-weight: 600; letter-spacing: .04em; }
.work-desc { margin-top: 10px; max-width: 30em; font-size: 15px; line-height: 1.85; color: var(--muted); }
.work-go {
  display: inline-flex; align-items: center; gap: .5em;
  margin-top: 18px;
  font-size: 13px; letter-spacing: .3em;
  color: var(--accent);
}
.work-go svg { width: 1em; height: 1em; transition: transform .6s var(--ease); }
.work-link:hover .work-go svg { transform: translate(.2em, -.2em); }

/* ───────── 印：四步 + 邀约 ───────── */
.steps {
  grid-column: 1 / -1;
  margin-top: clamp(64px, 9vw, 132px);
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--fg);
}
.steps li { position: relative; padding: 30px clamp(18px, 2.4vw, 36px) 0 0; }
.steps li::before {
  content: ""; position: absolute; left: 0; top: -5px;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--fg);
}
.steps li:first-child::before { background: var(--accent); border-color: var(--accent); }
.step-char { display: block; font-size: clamp(72px, 8vw, 120px); line-height: 1.05; }
.steps p { margin-top: 14px; max-width: 15em; font-size: 15px; line-height: 1.85; color: var(--muted); }

.invite { position: relative; grid-column: 1 / -1; margin-top: clamp(96px, 14vw, 210px); padding-right: clamp(120px, 20vw, 300px); }
.seal--invite {
  position: absolute; right: clamp(0px, 3vw, 40px); top: -10%;
  width: clamp(110px, 16vw, 230px); height: auto;
  transform: rotate(6deg);
}
.js .invite .seal--invite { opacity: 0; transform: scale(1.9) rotate(18deg); }
.js .invite.is-in .seal--invite {
  opacity: 1; transform: rotate(6deg);
  transition: opacity .12s linear .55s, transform .42s var(--ease-stamp) .55s;
}
.invite-line {
  font-size: clamp(40px, 6.4vw, 96px);
  line-height: 1.25; letter-spacing: .04em;
}
.invite-mail {
  position: relative;
  display: inline-flex; align-items: center; gap: .3em;
  margin-top: clamp(14px, 2vw, 28px);
  padding-bottom: .08em;
  font-family: var(--latin); font-style: italic; font-weight: 500;
  font-size: clamp(30px, 5.2vw, 76px); line-height: 1.2;
  color: var(--accent);
}
.invite-mail::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: currentColor;
  transform-origin: 100% 50%;
  transition: transform .7s var(--ease);
}
.invite-mail:hover::after { transform: scaleX(0); }
.invite-mail svg { width: .62em; height: .62em; transition: transform .6s var(--ease); }
.invite-mail:hover svg { transform: translate(.12em, -.12em); }
.invite-note { margin-top: 26px; font-size: 15px; color: var(--muted); }

/* ───────── 页脚：远山收卷 ───────── */
.foot {
  position: relative; overflow: hidden; z-index: 1;
  padding: clamp(96px, 12vw, 170px) var(--gutter) 30px;
  background: var(--bg); color: var(--fg);
}
.foot-ridge {
  position: absolute; left: -2%; right: -2%; bottom: 0;
  width: 104%; height: 46%;
  opacity: .55;
}
.foot-inner, .foot-base {
  position: relative; z-index: 1;
  max-width: 1320px; margin: 0 auto;
}
.foot-inner {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 3fr) minmax(0, 3fr);
  gap: 40px clamp(28px, 6vw, 96px);
}
.foot-name { font-size: clamp(26px, 3vw, 42px); font-weight: 900; letter-spacing: .1em; line-height: 1.3; }
.foot-latin { margin-top: 6px; font-family: var(--latin); font-style: italic; font-size: 22px; color: var(--muted); }
.foot-verse { margin-top: 14px; font-size: 14px; letter-spacing: .3em; color: var(--muted); }
.foot-nav a, .foot-links a { display: inline-block; padding: 4px 0; color: var(--muted); transition: color .4s var(--ease); }
.foot-nav a:hover, .foot-links a:hover { color: var(--fg); }
.foot-nav { font-size: 15px; }
.foot-nav b { display: inline-block; width: 1.6em; font-size: 20px; line-height: 1; color: var(--fg); }
.foot-links { font-family: var(--latin); font-style: italic; font-size: 21px; line-height: 1.5; }
.foot-base {
  margin-top: clamp(64px, 9vw, 130px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 28px;
  font-size: 13px; letter-spacing: .08em; color: var(--muted);
}
.foot-base a { transition: color .4s var(--ease); }
.foot-base a:hover { color: var(--fg); }
.foot-base a:last-child { margin-left: auto; }

/* ───────── 窄屏 ───────── */
@media (max-width: 880px) {
  :root { --mast-h: 60px; }
  body { font-size: 16px; }
  .logo-latin { display: none; }

  .rail {
    top: 0; right: calc(var(--gutter) - 10px);
    height: var(--mast-h);
    transform: none; padding-left: 0;
    flex-direction: row; align-items: center; gap: 0;
    color: var(--bar-fg); mix-blend-mode: normal;
    transition: color .5s var(--ease), opacity 1s var(--ease);
  }
  .rail-line { display: none; }
  .rail a { width: auto; padding: 12px 9px; font-size: 20px; opacity: .55; }
  .rail span { display: none; }

  .hero-stage { top: 42%; }
  .hero-title { font-size: clamp(120px, 34vw, 200px); }
  .seal--hero { width: 40px; left: calc(100% + .06em); bottom: .1em; }
  .hero-verse { font-size: clamp(17px, 5vw, 24px); letter-spacing: .14em; text-indent: .14em; }
  .hero-verse .punc { margin-right: .14em; }
  .hero-hint { display: none; }

  .act-inner { grid-template-columns: minmax(0, 1fr); padding-right: 0; }
  .act-mark { position: static; }
  .act-char { font-size: clamp(140px, 42vw, 240px); }
  .act-body { padding-top: 36px; }
  #bi { padding-top: 0; }

  .tenets { grid-template-columns: 1fr; gap: 28px; }
  .index-row { grid-template-columns: 3em minmax(0, 1fr); row-gap: 8px; }
  .index-row > div { grid-column: 2; }
  .index-row:hover h3 { transform: none; }
  .scene { height: 70vh; }
  .scene-moon { right: 8%; top: 8%; }
  .sheet { grid-template-columns: repeat(2, 1fr); }
  .sheet li { min-height: 0; padding: 16px 16px 26px; }
  .sheet h3 { margin-top: 26px; }
  .works { padding-right: 0; }
  .works-grid { grid-template-columns: minmax(0, 1fr); }
  .work--wide .work-link { display: block; }
  .work--wide .stage { aspect-ratio: 4 / 3; }
  .work--wide .work-text { padding: 24px 0 0; }
  .stage--win .shot { width: 46%; }
  .stage--win .shot:nth-child(1) { left: 49%; top: 22%; }
  .stage--win .shot:nth-child(2) { left: 6%; top: 8%; }
  .steps { grid-template-columns: repeat(2, 1fr); border-top: 0; row-gap: 40px; }
  .steps li { border-top: 1px solid var(--fg); }
  .invite { padding-right: 0; padding-top: 120px; }
  .seal--invite { right: auto; left: 0; top: 0; width: 96px; }
  .foot-inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .foot-brand { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .act-char, .js .stroke { clip-path: none; }
  .js .hero-title, .js .seal--hero, .js .hero-verse i, .js .hero-sign, .js .hero-en, .js .hero-cue, .js .hero-hint,
  .js .mast, .js .rail, .js [data-r], .js .invite .seal--invite { opacity: 1; transform: none; filter: none; pointer-events: auto; }
  .js .seal--hero { transform: rotate(-5deg); }
  .js .invite .seal--invite { transform: rotate(6deg); }
  .hero-title.is-wet { filter: none; }
}