/* 标题字体：Bodoni Moda（SIL OFL，assets/fonts/OFL.txt），只含拉丁字符，自己托管，不从 Google 加载。
   中文、日文的字形落到 macOS 自带的宋体、明朝体上，不用额外下载 */
@font-face {
  font-family: "Bodoni Moda";
  src: url("/assets/fonts/BodoniModa-Variable.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2212;
}
@font-face {
  font-family: "Bodoni Moda";
  src: url("/assets/fonts/BodoniModa-Italic-Variable.woff2") format("woff2");
  font-style: italic;
  font-weight: 400 900;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2212;
}

/* 配色取自 App 的 Palette（Sources/CurtainCall/Panel.swift），深色和浅色各一套，跟着系统外观走。
   页面底色比面板底色再深一档，演示视频的舞台是按它做的 */
:root {
  --page: #0f1013;
  --background: #1b1c20;
  --card: #25262c;
  --tile: #34353d;
  --line: rgb(255 255 255 / 0.07);
  --edge: rgb(255 255 255 / 0.11);
  --foreground: #ededf1;
  --muted: #a1a1ab;
  --accent: #a5b4fc;
  --on-accent: #1b1c20;
  --accent-soft: #2b2c47;
  --green: #6fd99b;
  --radius: 12px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans", "Helvetica Neue", sans-serif;
  --serif: "Bodoni Moda", "Songti SC", "STSong", "Hiragino Mincho ProN", "Yu Mincho", Georgia, serif;
}
:lang(ja) { --serif: "Bodoni Moda", "Hiragino Mincho ProN", "Yu Mincho", "Songti SC", Georgia, serif; }

@media (prefers-color-scheme: light) {
  :root {
    --page: #f2f2f5;
    --background: #f8f8fb;
    --card: #ffffff;
    --tile: #efeff3;
    --line: rgb(0 0 0 / 0.07);
    --edge: rgb(0 0 0 / 0.12);
    --foreground: #111111;
    --muted: #6b6b6b;
    --accent: #5b5fe0;
    --on-accent: #ffffff;
    --accent-soft: #ecedfd;
    --green: #1f9d55;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  margin: 0;
  background: var(--page);
  color: var(--foreground);
  font: 16px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img, video { display: block; max-width: 100%; }

.wrap { width: min(1080px, 100% - 40px); margin-inline: auto; }
.wrap.narrow { width: min(720px, 100% - 40px); }

h1, h2, h3 { margin: 0; line-height: 1.15; letter-spacing: -0.02em; text-wrap: balance; }
h1, h2 { font-family: var(--serif); font-weight: 900; }
:lang(zh) h1, :lang(zh) h2, :lang(ja) h1, :lang(ja) h2 { letter-spacing: 0; }
h1 { font-size: clamp(2.3rem, 6vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.05rem; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0; }

/* 导航：和面板一样的底色加一条细线，滚动时固定在顶上 */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--page) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 24px; height: 56px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--foreground); font-weight: 600; }
.brand:hover { text-decoration: none; }
.brand img { border-radius: 7px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 0.92rem; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--foreground); text-decoration: none; }

/* 按钮：胶囊形，主按钮用强调色实底，和面板里的“解锁”一样 */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid var(--edge);
  border-radius: 999px;
  background: var(--card);
  color: var(--foreground);
  font: 600 0.98rem/1 var(--font);
  cursor: pointer;
  transition: transform 0.12s ease-out, background 0.12s ease-out;
}
.button:hover { text-decoration: none; transform: translateY(-1px); }
.button.primary { border-color: transparent; background: var(--accent); color: var(--on-accent); }
.button.small { min-height: 34px; padding: 0 16px; font-size: 0.88rem; }
.button.wide { width: 100%; }
.button.disabled { opacity: 0.55; cursor: default; transform: none; }
.button:focus-visible, a:focus-visible, summary:focus-visible, select:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* 首屏是一座舞台，深色不随系统外观变。幕布默认拉开、聚光灯默认亮着：脚本加载后（html.js）才先合上幕布、
   关灯，再按顺序拉开、打灯，所以脚本没跑也不会把内容挡住。时长单位是秒 */
.actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 12px; }
.fineprint { margin-top: 14px; color: var(--muted); font-size: 0.85rem; }
.fineprint.center { text-align: center; margin-top: 28px; }

.stage {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: calc(100vh - 56px);
  min-height: calc(100svh - 56px);
  padding: 96px 0 48px;
  background: #0d0709;
  color: #f6efe6;
}
.stage-valance {
  position: absolute; left: 0; right: 0; top: 0; z-index: 3; height: 46px;
  background: repeating-linear-gradient(90deg, #6d1019 0, #a3283a 30px, #6d1019 60px);
  border-bottom: 3px solid #d4a74a;
  box-shadow: 0 10px 30px rgb(0 0 0 / 0.6);
}
.stage-spot {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse 600px 760px at 50% 0%, rgb(255 236 200 / 0.24), rgb(255 236 200 / 0.07) 55%, transparent 75%);
  transition: opacity 0.7s ease-out;
}
.js .stage:not(.is-lit) .stage-spot { opacity: 0; }

/* 幕布：一片 52% 宽，合上时两片在中间叠一点；拉开后各露出 18% 左右，下摆收成弧形 */
.curtain {
  position: absolute; top: 0; bottom: 0; z-index: 2; width: 52%;
  transition: transform 1.8s cubic-bezier(0.7, 0, 0.2, 1), border-radius 1.8s cubic-bezier(0.7, 0, 0.2, 1);
}
.curtain.left {
  left: 0;
  background: repeating-linear-gradient(90deg, #5a0c14 0, #8e1b25 22px, #b0303a 34px, #7a1520 48px, #4a0910 64px);
  box-shadow: 18px 0 40px rgb(0 0 0 / 0.6);
  transform: translateX(-66%);
  border-bottom-right-radius: 40% 60%;
}
.curtain.right {
  right: 0;
  background: repeating-linear-gradient(90deg, #4a0910 0, #7a1520 16px, #b0303a 30px, #8e1b25 42px, #5a0c14 64px);
  box-shadow: -18px 0 40px rgb(0 0 0 / 0.6);
  transform: translateX(66%);
  border-bottom-left-radius: 40% 60%;
}
.js .stage:not(.is-open) .curtain { transform: none; border-radius: 0; }

.stage-inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: 14px; text-align: center; }
.stage-eyebrow { color: #d4a74a; font-size: 0.78rem; font-weight: 600; letter-spacing: 0.3em; text-transform: uppercase; }
/* 中文、日文里的“Mac”不能被转成全大写 */
:lang(zh) .stage-eyebrow, :lang(ja) .stage-eyebrow { text-transform: none; letter-spacing: 0.2em; }
.stage-title { font-size: clamp(2.5rem, 7vw, 5rem); line-height: 0.98; }
.stage-title em { font-style: italic; font-weight: 500; color: #f2c36b; }
.stage-lede { font-family: var(--serif); font-style: italic; font-size: 1.25rem; color: #cdbfae; }
/* 宋体、明朝体没有斜体，浏览器硬斜着画很难看 */
:lang(zh) .stage-title em, :lang(ja) .stage-title em, :lang(zh) .stage-lede, :lang(ja) .stage-lede { font-style: normal; }
/* 中文、日文标题只在文案里 <wbr> 标出的词组之间断行，不在词中间断开 */
:lang(zh) .stage-title, :lang(ja) .stage-title { word-break: keep-all; overflow-wrap: anywhere; }
.button.gold { border-color: transparent; background: #f2c36b; color: #2a0d10; }
.button.ghost { border-color: rgb(242 195 107 / 0.55); background: transparent; color: #f6efe6; }
.ticket-price { font-family: var(--serif); font-size: 1.1rem; font-weight: 700; color: #f2c36b; }

.stage-screen { position: relative; width: min(600px, 100%); margin: 26px 0 0; }
.stage-screen::after {
  content: ""; position: absolute; left: -10%; right: -10%; bottom: -46px; height: 60px; z-index: -1;
  background: radial-gradient(ellipse 50% 50% at 50% 50%, rgb(255 226 180 / 0.28), transparent 70%);
}
.stage-act { position: absolute; right: calc(100% + 20px); top: 10px; display: flex; flex-direction: column; gap: 2px; text-align: right; white-space: nowrap; }
.stage-act em { font-family: var(--serif); font-size: 1.05rem; font-style: italic; color: #d4a74a; }
:lang(zh) .stage-act em, :lang(ja) .stage-act em { font-style: normal; }
.stage-act span { color: #cdbfae; font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase; }
.stage-frame { position: relative; overflow: hidden; border: 1px solid rgb(255 255 255 / 0.12); border-radius: 14px; box-shadow: 0 30px 80px rgb(0 0 0 / 0.7); }
.stage-video { width: 100%; aspect-ratio: 8 / 5; object-fit: cover; background: #000; }
.stage-fineprint { margin-top: 30px; color: #9d8f80; font-size: 0.85rem; }
/* 舞台中间的空间不够把“第一幕”放在视频左边时（幕布会挡住它），挪到视频上方 */
@media (max-width: 1199px) {
  .stage-act { position: static; flex-direction: row; justify-content: center; align-items: baseline; gap: 10px; margin-bottom: 10px; }
}

/* 再来一次：视频只演一次，演完才出现 */
.encore {
  position: absolute; z-index: 3; bottom: 16px; left: 50%; transform: translateX(-50%);
  display: inline-flex; align-items: center; min-height: 36px; padding: 0 16px;
  border: 1px solid rgb(242 195 107 / 0.6); border-radius: 999px;
  background: rgb(13 7 9 / 0.72); color: #f2c36b;
  font: 600 0.88rem/1 var(--font); cursor: pointer;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.showcase-frame .encore { left: 22px; bottom: 22px; transform: none; }

/* 效果展示：区块按效果数量撑高（每个效果一屏），里面这一层吸在导航下面不动，滚动只换内容。
   导航高 56px，所以吸住的位置和高度都扣掉它；svh 是手机浏览器地址栏展开时的视口高度 */
.showcase { position: relative; height: calc(var(--count) * 100vh); height: calc(var(--count) * 100svh); }
.showcase-sticky { position: sticky; top: 56px; height: calc(100vh - 56px); height: calc(100svh - 56px); display: flex; align-items: center; }
.showcase-grid { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: 48px; align-items: center; }
.showcase-copy h2 { text-align: left; }
.showcase-lede { margin-top: 12px; color: var(--muted); font-size: 0.95rem; }

/* 左边的效果名：竖着一条细轨，当前这一项在轨上亮成强调色，下面展开一句说明 */
.showcase-list { position: relative; margin: 28px 0 0; padding: 0 0 0 14px; list-style: none; display: flex; flex-direction: column; gap: 2px; }
.showcase-list::before { content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 2px; border-radius: 1px; background: var(--line); }
.showcase-item {
  position: relative;
  display: block;
  width: 100%;
  padding: 10px 12px;
  border: 0;
  border-radius: 10px;
  background: none;
  color: var(--muted);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s ease-out, color 0.2s ease-out;
}
.showcase-item:hover { color: var(--foreground); }
.showcase-item::before { content: ""; position: absolute; left: -14px; top: 10px; bottom: 10px; width: 2px; border-radius: 1px; background: transparent; transition: background 0.2s ease-out; }
.showcase-item.is-active { background: var(--card); color: var(--foreground); }
.showcase-item.is-active::before { background: var(--accent); }
.showcase-name { display: block; font-size: 1.05rem; font-weight: 600; }
.showcase-text { display: block; max-height: 0; overflow: hidden; opacity: 0; color: var(--muted); font-size: 0.92rem; transition: max-height 0.3s ease-out, opacity 0.3s ease-out, margin 0.3s ease-out; }
.showcase-item.is-active .showcase-text { max-height: 9em; margin-top: 6px; opacity: 1; }

/* 舞台：四段视频叠在一起，只有当前这段不透明。外框跟着效果变：老电视是显像管外壳加扫描线，黑洞是一圈紫到青的光环 */
.showcase-frame { position: relative; padding: 12px; border-radius: 24px; background: #0b0b10; border: 1px solid var(--edge); isolation: isolate; transition: background 0.4s ease-out; }
.showcase-stage[data-effect="tv"] .showcase-frame { background: linear-gradient(160deg, #3a3b44, #1b1c20 60%); box-shadow: 0 30px 60px -30px rgb(0 0 0 / 0.7); }
.showcase-frame::before { content: ""; display: block; aspect-ratio: 8 / 5; }
.showcase-video { position: absolute; inset: 12px; width: calc(100% - 24px); height: calc(100% - 24px); object-fit: cover; border-radius: 14px; background: #000; opacity: 0; transition: opacity 0.35s ease-out; }
.showcase-video.is-active { opacity: 1; z-index: 1; }
.showcase-frame::after {
  content: "";
  position: absolute;
  inset: 12px;
  z-index: 2;
  border-radius: 14px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s ease-out;
  background:
    repeating-linear-gradient(to bottom, rgb(0 0 0 / 0.14) 0 1px, transparent 1px 3px),
    radial-gradient(ellipse at center, transparent 60%, rgb(0 0 0 / 0.35));
}
.showcase-stage[data-effect="tv"] .showcase-frame::after { opacity: 1; }
.ring {
  position: absolute;
  inset: -2px;
  z-index: -1;
  border-radius: 26px;
  background: conic-gradient(from 0deg, #a78bfa, #22d3ee, #6d28d9, #a78bfa);
  filter: blur(18px);
  opacity: 0;
  transition: opacity 0.4s ease-out;
  animation: orbit 14s linear infinite;
}
.showcase-stage[data-effect="portal"] .ring { opacity: 0.55; }
@keyframes orbit { to { transform: rotate(360deg); } }

/* 声音开关：默认关着，点了才有声音 */
.sound-toggle {
  position: absolute;
  right: 22px;
  bottom: 22px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgb(255 255 255 / 0.16);
  border-radius: 999px;
  background: rgb(15 16 19 / 0.72);
  color: #ededf1;
  font: 600 0.82rem/1 var(--font);
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.sound-toggle .icon-on, .sound-toggle[aria-pressed="true"] .icon-off { display: none; }
.sound-toggle[aria-pressed="true"] .icon-on { display: block; }

/* 窄屏才用的说明：宽屏时说明在左边的效果名下面 */
.showcase-captions { display: none; }
.showcase-caption { display: none; }

/* 区块 */
.section { padding: 72px 0; }
.section.first { padding-top: 56px; min-height: 60vh; }
.section h2 { text-align: center; }
.section.first h1 { font-size: clamp(2rem, 5vw, 2.8rem); }
.section-lede { max-width: 620px; margin: 14px auto 0; color: var(--muted); text-align: center; }
.section.first .section-lede, .section.first h1 { text-align: left; margin-inline: 0; }

.grid { display: grid; gap: 18px; margin-top: 36px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* 卡片：和面板里的卡片一样的底色、细描边和圆角 */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.card.plain { padding: 22px; }
.card.plain p, .card-body p { margin-top: 8px; color: var(--muted); font-size: 0.95rem; }
.card.plain h2 { text-align: left; font-size: 1.3rem; }
.card-body { padding: 18px 20px 22px; }

.badge {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0;
  vertical-align: 2px;
}
.badge.free { background: color-mix(in srgb, var(--green) 18%, transparent); color: var(--green); }

/* 隐私承诺：强调浅底的横幅，对应 App 里“权限与隐私”窗口的顶部 */
.promise {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 18px;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--accent-soft);
}
.promise p { margin-top: 6px; color: var(--muted); max-width: 520px; font-size: 0.95rem; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.chips li { padding: 6px 12px; border-radius: 999px; background: var(--card); color: var(--accent); font-size: 0.85rem; font-weight: 600; }

/* 价格 */
.plan { padding: 26px; display: flex; flex-direction: column; gap: 14px; }
.plan.featured { border-color: color-mix(in srgb, var(--accent) 45%, transparent); background: var(--accent-soft); }
.price { font-size: 1.9rem; font-weight: 700; letter-spacing: -0.02em; }
.price span { color: var(--muted); font-size: 0.9rem; font-weight: 500; letter-spacing: 0; }
.ticks { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 8px; flex-grow: 1; font-size: 0.95rem; }
.ticks li { padding-left: 24px; position: relative; }
.ticks li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 700; }
.ticks li.no { color: var(--muted); }
.ticks li.no::before { content: "–"; color: var(--muted); }

.download { text-align: center; display: flex; flex-direction: column; align-items: center; }
.download img { border-radius: 22px; margin-bottom: 18px; }

/* 常见问题 */
details { border-bottom: 1px solid var(--line); }
details:first-of-type { margin-top: 28px; border-top: 1px solid var(--line); }
summary { padding: 16px 4px; cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--muted); font-weight: 400; }
details[open] summary::after { content: "–"; }
details p { padding: 0 4px 18px; color: var(--muted); }

/* 购买和找回许可证 */
.checkout { margin-top: 28px; padding: 22px; display: flex; flex-direction: column; gap: 16px; }
.checkout-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.checkout-row p { color: var(--muted); font-size: 0.9rem; }
.checkout .price { font-size: 1.4rem; white-space: nowrap; }
.checkout label { font-weight: 600; }
select, input[type="email"] {
  min-height: 44px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--edge);
  background: var(--tile);
  color: var(--foreground);
  font: 1rem var(--font);
}
input[type="email"] { width: 100%; }
.note { padding: 12px 14px; border-radius: 10px; background: var(--tile); color: var(--muted); font-size: 0.9rem; }
.note.error { color: var(--foreground); }
[hidden] { display: none !important; }
#done { margin-top: 18px; }

/* 条款正文 */
.prose h1 { text-align: left; }
.prose h2 { text-align: left; font-size: 1.25rem; margin-top: 34px; }
.prose p, .prose ul { margin-top: 12px; color: var(--muted); }
.prose ul { padding-left: 20px; }
.prose li { margin-top: 6px; }

/* 页脚 */
.footer { border-top: 1px solid var(--line); padding: 36px 0 48px; margin-top: 40px; font-size: 0.9rem; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 24px 40px; align-items: flex-start; justify-content: space-between; }
.footer-brand p { margin-top: 8px; color: var(--muted); max-width: 300px; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a, .languages a { color: var(--muted); }
.languages { display: flex; gap: 14px; }
.languages a[aria-current] { color: var(--foreground); font-weight: 600; }

@media (max-width: 760px) {
  .grid.two, .grid.three { grid-template-columns: minmax(0, 1fr); }
  /* 窄屏：效果名排成一行胶囊放在视频上面，说明挪到视频下面 */
  .showcase-grid { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .showcase-copy h2 { font-size: 1.6rem; }
  .showcase-lede { display: none; }
  .showcase-list { flex-direction: row; flex-wrap: wrap; gap: 6px; margin-top: 14px; padding: 0; }
  .showcase-list::before, .showcase-item::before { display: none; }
  .showcase-item { width: auto; padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px; }
  .showcase-item.is-active { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 45%, transparent); color: var(--accent); }
  .showcase-name { font-size: 0.9rem; }
  .showcase-name .badge { display: none; }
  .showcase-text { display: none; }
  .showcase-frame { padding: 8px; border-radius: 18px; }
  .showcase-video, .showcase-frame::after { inset: 8px; width: calc(100% - 16px); height: calc(100% - 16px); border-radius: 11px; }
  .sound-toggle { right: 16px; bottom: 16px; }
  .showcase-captions { display: block; margin-top: 12px; }
  .showcase-caption.is-active { display: block; color: var(--muted); font-size: 0.92rem; }
  .nav-links { display: none; }
  .nav-inner { justify-content: space-between; }
  /* 窄屏：幕布拉得更开，内容两边多留些空，不被幕布挡住 */
  .stage { padding-top: 76px; }
  .stage .wrap { width: calc(100% - 72px); }
  .curtain.left { transform: translateX(-84%); }
  .curtain.right { transform: translateX(84%); }
  .stage-lede { font-size: 1.05rem; }
  .section { padding: 52px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ring { animation: none; }
  .curtain, .stage-spot, .button, .showcase-item, .showcase-item::before, .showcase-text, .showcase-frame, .showcase-video, .showcase-frame::after, .ring { transition: none; }
}