@font-face {
  font-family:YMC Sans;
  src:url('../../fonts/GoogleSansFlex.woff2') format('woff2');
  /* ⚠️ Google Sans Flex 的 wght 轴是 1–1000（Black=900，满字重=1000）。
     这里原来写 100 900，会让 font-weight:1000 被夹到 900 —— 满字重就上不去。 */
  font-weight:100 1000;
  font-display:swap
}

@font-face {
  font-family:YMC Chinese;
  src:url('../../fonts/OppoSans-subset.woff2') format('woff2');
  font-weight:100 900;
  font-display:swap
}

:root {
  color-scheme:light;
  --paper:#f8f9fb;
  --ink:#111214;
  --muted:#656971;
  --line:#d4d6db;
  --sans:'YMC Sans','YMC Chinese',Arial,sans-serif
}

* {
  box-sizing:border-box
}

html {
  scroll-behavior:auto;
  scrollbar-width:none
}
/* 仅隐藏页面滚动条，保留滚轮、触摸和键盘滚动。 */
html::-webkit-scrollbar{display:none}

body {
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  line-height:1.65;
  overflow-x:clip;
  -webkit-font-smoothing:antialiased
}

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

button {
  font:inherit
}

a:focus-visible,button:focus-visible {
  outline:2px solid #2867b2;
  outline-offset:7px
}

::selection {
  color:white;
  background:#222
}

h1,h2,h3,p,figure {
  margin:0
}

img {
  display:block;
  width:100%;
  height:100%;
  object-fit:cover
}

ul,ol {
  margin:0;
  padding:0;
  list-style:none
}

svg {
  width:18px;
  height:18px;
  fill:none;
  stroke:currentColor;
  stroke-width:1.4
}

.skip-link {
  position:fixed;
  top:-80px;
  left:18px;
  padding:10px 18px;
  background:white;
  z-index:50
}

.skip-link:focus {
  top:18px
}

.site-nav {
  position:fixed;
  z-index:20;
  top:28px;
  left:36px;
  right:36px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  pointer-events:none;
  font-size:12px
}

.site-nav a {
  pointer-events:auto
}

.site-nav nav {
  display:flex;
  gap:28px;
  align-items:center;
  background:rgba(248,249,251,.85);
  padding:9px 15px;
  backdrop-filter:blur(12px)
}

.nav-home {
  font-size:19px;
  letter-spacing:-1px;
  font-weight:900;
  opacity:0;
  transition:opacity .25s
}

.has-scrolled .nav-home {
  opacity:1
}

.site-nav nav a {
  position:relative
}

.site-nav nav a[aria-current] {
  text-decoration:underline;
  text-underline-offset:5px
}

.exhibition-viewport {
  position:fixed;
  inset:0 0 58px;
  /* Native hash targeting must not create a second scroll offset inside the fixed scene. */
  overflow:clip
}

.exhibition {
  position:absolute;
  top:0;
  left:0;
  width:1600px;
  transform-origin:0 0;
  will-change:transform
}

.scene-node {
  position:absolute;
  contain:layout style
}

.scene-node[hidden] {
  display:none
}

.scene-copy {
  z-index:3
}

.scene-media {
  z-index:1
}

.scene-media a {
  display:block;
  position:relative
}

.media-surface {
  position:relative;
  background:#e9eaed;
  overflow:hidden
}

.media-surface img {
  filter:grayscale(1) contrast(1.12);
  transition:filter .65s cubic-bezier(.22,.61,.36,1)
}

.media-link:hover img,.media-link:focus-visible img {
  filter:grayscale(0) contrast(1)
}

/* ⚠️ 触屏没有持久 hover：显色透镜永远触发不了，图会一直是灰的。
   无 hover 能力的设备直接**去掉滤镜**：
   - 视觉上：本来就该是全彩（没有交互可揭示）；
   - 性能上：`filter` 只要不是 none，每个元素都会单独开一个合成层，
     中低端机上滑动会明显卡顿 —— 所以用 `filter:none` 而不是 `grayscale(0)`
     （恒等值仍然会走滤镜管线）。 */
@media(hover:none),(pointer:coarse) {
  .media-surface img {
    filter:none
  }
}

.media-surface::after {
  content:'';
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.15;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath fill='%23888' opacity='.32' filter='url(%23n)' d='M0 0h180v180H0z'/%3E%3C/svg%3E")
}

.media-surface.fx-ready img,.media-surface.fx-ready::after {
  opacity:0
}

.media-link .media-caption {
  margin-top:14px;
  display:flex;
  justify-content:space-between;
  gap:20px;
  font-size:12px;
  line-height:1.45
}

.media-caption small {
  display:block;
  color:var(--muted);
  margin-top:4px;
  font-size:10px
}

.selected-work .media-link .media-caption {
  font-size:18px;
  line-height:1.55;
  margin-top:20px;
}
.selected-work .media-caption small {
  font-size:14px;
  line-height:1.6;
  margin-top:7px;
}

@media(min-width:761px) {
  #work-sfj .media-caption {
    position:absolute;
    top:-142px;
    left:0;
    width:420px;
    margin:0;
  }
}

.media-arrow {
  flex:none;
  transition:transform .3s
}

.media-link:hover .media-arrow {
  transform:translate(3px,-3px)
}

.media-error {
  display:none;
  position:absolute;
  inset:0;
  place-content:center;
  padding:20px;
  color:#45494f;
  font-size:14px
}

.media-failed .media-error {
  display:grid
}

#exhibitionFX {
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  pointer-events:none;
  z-index:2
}

#exhibitionFX[hidden] {
  display:none
}

.stamp .stamp-logo {
  font-size:43px;
  line-height:1;
  font-weight:900;
  letter-spacing:-2.5px
}

.stamp p {
  font-size:10px;
  line-height:1.8;
  margin-top:9px
}

.stamp .stamp-date {
  margin-top:16px;
  font-size:9px;
  color:var(--muted)
}

.hero-title {
  font-size:138px;
  font-weight:900;
  letter-spacing:-9px;
  line-height:1;
  white-space:nowrap
}

.hero-copy .org-en {
  font-size:14px;
  letter-spacing:-.2px;
  margin-top:18px
}

.hero-copy .org-cn {
  font-size:16px;
  font-weight:600;
  margin:6px 0 12px
}

.hero-copy .hero-poem {
  font-size:12px;
  line-height:1.8
}

.hero-copy .text-link {
  margin-top:32px;
  font-size:12px
}

.text-link {
  display:inline-flex;
  align-items:center;
  gap:24px;
  border-bottom:1px solid #96999f;
  padding:0 0 6px;
  line-height:1.6
}

.text-link:hover {
  border-color:#101113
}

.tiny-index {
  font-size:12px;
  margin-bottom:18px;
  font-variant-numeric:tabular-nums
}

.editorial-label {
  font-size:12px;
  font-weight:650
}

.editorial-note {
  font-size:10px;
  color:var(--muted);
  line-height:1.8;
  margin-top:8px
}

.section-title {
  font-size:66px;
  font-weight:800;
  letter-spacing:-3px;
  line-height:1.1
}

.section-title.zh {
  font-size:49px;
  letter-spacing:-1.7px;
  line-height:1.25
}

.section-lead {
  font-size:15px;
  line-height:1.9;
  margin-top:28px;
  max-width:500px
}

.section-en {
  display:block;
  font-size:11px;
  letter-spacing:.06em;
  font-weight:400;
  margin-top:18px
}

.body-copy {
  font-size:17px;
  line-height:2;
  text-wrap:pretty
}

.body-copy p+p {
  margin-top:22px
}

.platforms {
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  font-size:12px;
  margin-top:30px;
  color:var(--muted)
}

.stats {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:58px 70px
}

.stat-value {
  font-size:78px;
  line-height:1;
  font-weight:650;
  letter-spacing:-4px
}

.stat-value em {
  font-style:normal;
  font-size:36px;
  letter-spacing:-2px
}

.stat p {
  font-size:13px;
  max-width:260px;
  margin-top:16px
}

.stat small {
  display:block;
  color:var(--muted);
  font-size:11px;
  margin-top:5px
}

.stat sup {
  font-size:12px;
  vertical-align:top;
  letter-spacing:0;
  line-height:3
}

.notes {
  font-size:11px;
  color:var(--muted);
  line-height:1.8
}

.group-title {
  font-size:39px;
  font-weight:750;
  letter-spacing:-1.5px;
  line-height:1.2
}

.group-title small {
  display:block;
  font-size:13px;
  font-weight:400;
  letter-spacing:0;
  margin-top:10px
}

.group-info {
  border-top:1px solid var(--line);
  padding-top:20px
}

.group-info .role {
  font-size:13px;
  margin:18px 0
}

.group-info .duties {
  font-size:13px;
  line-height:1.9;
  list-style:disc;
  padding-left:16px
}

.group-info .want {
  font-size:12px;
  color:var(--muted);
  margin:18px 0 22px;
  line-height:1.9
}

.group-info .text-link {
  font-size:12px
}

.group-headcount {
  font-size:12px;
  color:var(--muted);
  margin-top:12px
}

.join-poem {
  font-size:18px;
  line-height:2.2
}

.join-poem p:last-child {
  font-weight:650;
  margin-top:12px
}

.join-actions {
  display:flex;
  flex-wrap:wrap;
  gap:20px 32px;
  margin-top:30px;
  font-size:14px
}

.join-primary {
  background:#151619;
  color:white;
  padding:12px 22px;
  display:inline-flex;
  gap:32px;
  align-items:center
}

.join-primary:hover {
  background:#35383d
}

.join-note {
  font-size:12px;
  line-height:1.9;
  margin-top:26px;
  color:var(--muted)
}

.join-qr {
  background:#fff;
  padding:18px
}

.join-qr img {
  height:auto;
  filter:none
}

.join-qr figcaption {
  font-size:12px;
  text-align:center;
  margin-top:12px
}

.gains h3 {
  font-size:22px;
  line-height:1.5;
  margin-bottom:20px
}

.gains li {
  font-size:14px;
  padding:12px 0;
  border-top:1px solid var(--line)
}

.workflow li {
  display:grid;
  grid-template-columns:52px 1fr;
  gap:20px;
  padding:26px 0;
  border-top:1px solid var(--line)
}

.workflow .step {
  font-size:12px
}

.workflow h3,.outlook h3 {
  font-size:22px;
  line-height:1.4;
  font-weight:600
}

.workflow p,.outlook p {
  font-size:14px;
  line-height:1.9;
  margin-top:12px;
  color:#4e525a
}

.outlook li {
  margin-bottom:38px
}

.outlook .tiny-index {
  color:var(--muted);
  margin-bottom:10px
}

.closing-title {
  font-size:86px;
  line-height:1.1;
  letter-spacing:-3px
}

.closing-copy {
  font-size:16px;
  line-height:1.9;
  margin:26px 0;
  max-width:470px
}

.closing-footer {
  font-size:11px;
  color:var(--muted);
  line-height:1.9;
  margin-top:65px
}

.group-dock {
  position:fixed;
  z-index:30;
  bottom:0;
  left:0;
  right:0;
  height:58px;
  background:rgba(248,249,251,.94);
  backdrop-filter:blur(14px);
  border-top:1px solid rgba(210,213,218,.3);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:0 36px
}

.group-dock nav {
  display:flex;
  gap:44px;
  font-size:13px;
  align-items:center
}

.group-dock nav a {
  display:inline-flex;
  align-items:center;
  min-height:44px;
  white-space:nowrap;
  color:#6e7279;
  transition:color .2s
}

.group-dock nav a:hover,.group-dock nav a:focus-visible {
  color:#111
}

.group-dock nav span {
  font-size:10px;
  margin-left:8px;
  opacity:.65
}

.dock-brand {
  position:absolute;
  left:36px;
  font-size:10px
}

.dock-brand span {
  color:#a5a8ae;
  margin:0 10px
}

.back-top {
  position:absolute;
  right:38px;
  font-size:20px
}

.scroll-progress {
  position:absolute;
  top:-1px;
  height:1px;
  left:0;
  right:0;
  background:transparent
}

.scroll-progress i {
  display:block;
  height:100%;
  width:100%;
  background:#17191e;
  transform-origin:left;
  transform:scaleX(0)
}

.noscript {
  padding:120px 8vw
}

@media(max-width:760px) {
  .site-nav {
    top:16px;
    left:16px;
    right:16px;
    font-size:11px
  }
  .site-nav nav {
    gap:18px;
    padding:8px 10px
  }
  .nav-home {
    font-size:16px
  }
  .exhibition-viewport {
    bottom:56px
  }
  .group-dock {
    height:56px;
    padding:0 14px
  }
  .group-dock nav {
    gap:19px;
    font-size:12px
  }
  .group-dock nav span,.dock-brand,.back-top {
    display:none
  }
  .hero-title {
    font-size:104px;
    letter-spacing:-6px
  }
  .hero-copy .org-cn {
    font-size:19px
  }
  .hero-copy .hero-poem {
    font-size:15px
  }
  .hero-copy .org-en {
    font-size:13px
  }
  .hero-copy .text-link {
    font-size:14px
  }
  .stamp .stamp-logo {
    font-size:30px
  }
  .stamp p {
    font-size:12px
  }
  .stamp .stamp-date {
    display:none
  }
  .section-title {
    font-size:58px
  }
  .section-title.zh {
    font-size:39px
  }
  .section-lead {
    font-size:16px
  }
  .body-copy {
    font-size:16px
  }
  .stats {
    gap:32px 26px
  }
  .stat-value {
    font-size:58px
  }
  .stat-value em {
    font-size:27px
  }
  .stat p {
    font-size:13px
  }
  .stat small,.notes {
    font-size:12px
  }
  .group-title {
    font-size:34px
  }
  .group-info .duties {
    font-size:15px
  }
  .group-info .want {
    font-size:14px
  }
  .group-info .role,.group-headcount,.group-info .text-link {
    font-size:14px
  }
  .media-link .media-caption {
    font-size:14px
  }
  .media-caption small {
    font-size:12px
  }
  .editorial-label {
    font-size:15px
  }
  .editorial-note {
    font-size:13px
  }
  .tiny-index {
    font-size:13px
  }
  .join-poem {
    font-size:16px
  }
  .join-actions {
    font-size:15px
  }
  .join-note {
    font-size:14px
  }
  .join-qr {
    max-width:260px
  }
  .workflow p,.outlook p {
    font-size:15px
  }
  .workflow li {
    grid-template-columns:30px 1fr;
    gap:14px
  }
  .closing-title {
    font-size:54px
  }
  .closing-footer {
    font-size:12px
  }
  .gains li {
    font-size:15px
  }
}

.exhibition {
  z-index:1
}

#exhibitionFX {
  z-index:0
}

.media-surface.fx-ready {
  background:transparent
}

/* 大字 Y.M.C. 与左上角字标统一用 Google Sans Flex（Arial 那套退休）。
   字重 800：满字重 1000 在 138px 下偏重、笔画糊在一起，800（ExtraBold）更清爽。 */
.hero-title,.stamp-logo {
  font-family:"YMC Sans",Arial,Helvetica,sans-serif!important;
  font-weight:800!important
}

.hero-title {
  letter-spacing:-7px
}

.stamp-logo {
  letter-spacing:-2px
}

@media(prefers-reduced-motion:reduce) {
  *,*::before,*::after {
    transition:none!important;
    scroll-behavior:auto!important
  }
}

@media(max-width:360px) {
  .group-dock nav {
    gap:12px;
    font-size:11px;
  }
}