:root {
  --sr-bg: #ffffff;
  --sr-panel: #f3f3f3;
  --sr-ink-warm: #17140f;
  --sr-line: #e3e3e1;
  --sr-line-strong: #cfcfcb;
  --sr-lime: #cdf466;
  --sr-olive: #4f7d17;
  --sr-text: #141412;
  --sr-muted: #5f5f5b;
  --sr-ok: #2f8f4e;
  --sr-warn: #c27a0e;
  --sr-err: #d2382f;
  --sr-strip: #141412;
  --sr-amber: #3d2b12;
  --sr-amber-beam: rgba(61, 43, 18, 0.78);
  --sr-clear: rgba(23, 20, 15, 0);
  --sr-mask: #000000;
  --sr-phone: #2a251d;
  --sr-phone-edge: rgba(196, 178, 150, 0.36);
  --sr-phone-btn: #221e17;
  --sr-island: #0d0b08;
  --sr-screen-a: #3d2b12;
  --sr-screen-b: #1c150d;
  --sr-floor: rgba(5, 4, 2, 0.62);
  --sr-on-dark: #ffffff;
  --sr-on-dark-2: rgba(255, 255, 255, 0.76);
  --sr-on-dark-3: rgba(255, 255, 255, 0.66);
  --sr-on-dark-line: rgba(255, 255, 255, 0.16);
  --sr-on-dark-fill: rgba(255, 255, 255, 0.06);
  --sr-on-dark-hover: rgba(255, 255, 255, 0.1);
  --sr-ghost-line: rgba(255, 255, 255, 0.5);
  --sr-price-line: rgba(255, 255, 255, 0.32);
  --sr-lime-ring: rgba(205, 244, 102, 0.26);
  --sr-lime-ring-2: rgba(205, 244, 102, 0.12);
  --sr-lime-glow: rgba(205, 244, 102, 0.5);
  --sr-shadow-note: 0 1px 2px rgba(10, 8, 4, 0.22), 0 22px 46px -14px rgba(10, 8, 4, 0.64);
  --sr-shadow-card: 0 1px 2px rgba(20, 20, 18, 0.05), 0 16px 34px -14px rgba(20, 20, 18, 0.18);
  --sr-shadow-phone: 0 56px 90px -34px rgba(5, 4, 2, 0.85);
  --sr-shadow-dot: 0 0 0 4px rgba(205, 244, 102, 0.14), 0 0 18px rgba(205, 244, 102, 0.5);
  --sr-shadow-menu: 0 12px 32px rgba(20, 20, 18, 0.14);
  --sr-veil: rgba(20, 20, 18, 0.4);
  --sr-font-display: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --sr-font-body: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --sr-font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sr-r-canvas: 32px;
  --sr-r-panel: 40px;
  --sr-r-note: 20px;
  --sr-r-pill: 999px;
  --sr-r-mark: 10px;
  --sr-r-small: 8px;
  --sr-r-mobile: 24px;
  --sr-r-mobile-panel: 28px;
  --sr-r-mobile-note: 16px;
  --sr-r-phone: 46px;
  --sr-r-screen: 37px;
  --sr-r-phone-mobile: 32px;
  --sr-r-screen-mobile: 26px;
  --sr-r-round: 50%;
  --sr-gutter: 24px;
  --gutter: var(--sr-gutter);
  --sr-inset: 72px;
  --sr-reading-width: 1128px;
  --sr-header-width: 1280px;
  --sr-wide-width: 1344px;
  --sr-h1: clamp(34px, 3.3vw, 48px);
  --sr-h2: clamp(28px, 2.6vw, 38px);
  --sr-h3: 30px;
  --sr-tracking: -0.02em;
  --sr-ease: cubic-bezier(0.22, 0.8, 0.3, 1);
  --sr-fast: 0.2s;
  --sr-enter: 0.45s;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 24px; }
body {
  margin: 0;
  background: var(--sr-bg);
  color: var(--sr-text);
  font-family: var(--sr-font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
[hidden] { display: none !important; }
img, svg { max-width: 100%; }
img { height: auto; }
svg { vertical-align: middle; flex-shrink: 0; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }
a { color: var(--sr-olive); text-underline-offset: 4px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--sr-olive); outline-offset: 3px; }
::selection { background: var(--sr-lime); color: var(--sr-text); }
h1, h2, h3 {
  font-family: var(--sr-font-display);
  font-weight: 800;
  letter-spacing: var(--sr-tracking);
  line-height: 1.22;
  text-wrap: balance;
}
h1 { font-size: var(--sr-h1); }
h2 { font-size: var(--sr-h2); }
h3 { font-size: var(--sr-h3); }
p, li { overflow-wrap: break-word; }
code, pre, kbd { font-family: var(--sr-font-mono); }
code { overflow-wrap: anywhere; font-size: 0.9em; }
pre {
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  padding: 20px;
  border: 1px solid var(--sr-line);
  border-radius: var(--sr-r-small);
  background: var(--sr-panel);
  color: var(--sr-text);
  -webkit-overflow-scrolling: touch;
}
pre code { white-space: pre; overflow-wrap: normal; word-break: normal; }
main, section, article, aside, nav, figure, div { min-width: 0; }
.wrap {
  width: 100%;
  max-width: calc(var(--sr-reading-width) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap--wide { max-width: calc(var(--sr-wide-width) + var(--gutter) * 2); }
.section { padding-top: 80px; padding-bottom: 80px; }
.section--panel { background: var(--sr-panel); color: var(--sr-text); }
.section-heading { max-width: 44em; margin-inline: auto; margin-bottom: 40px; text-align: center; }
.section-heading p, .muted { color: var(--sr-muted); }
.section-heading em, .text-key { color: var(--sr-olive); font-style: normal; }
.keep { white-space: nowrap; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: 8px;
  left: 16px;
  z-index: 200;
  padding: 10px 16px;
  border-radius: var(--sr-r-small);
  background: var(--sr-lime);
  color: var(--sr-text);
  transform: translateY(-160%);
}
.skip-link:focus { transform: none; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 12px 26px;
  border: 1px solid var(--sr-clear);
  border-radius: var(--sr-r-pill);
  font-family: var(--sr-font-body);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  transition: transform var(--sr-fast) ease;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn svg { width: 18px; height: 18px; }
.btn--lime { background: var(--sr-lime); color: var(--sr-text); }
.btn--line { background: var(--sr-bg); color: var(--sr-text); border-color: var(--sr-line-strong); }
.btn--ghost { background: var(--sr-clear); color: var(--sr-on-dark); border-color: var(--sr-ghost-line); }
.btn--ghost:hover { background: var(--sr-on-dark-hover); color: var(--sr-on-dark); }
.btn--dark { background: var(--sr-text); color: var(--sr-on-dark); }
.btn:disabled, .btn[aria-disabled="true"] { background: var(--sr-panel); color: var(--sr-muted); border-color: var(--sr-line); transform: none; }
.btn[aria-disabled="true"] { pointer-events: none; }
.btn--small { min-height: 48px; padding: 10px 20px; font-size: 14px; }
.card, .panel {
  padding: 28px;
  border: 1px solid var(--sr-line);
  border-radius: var(--sr-r-note);
  background: var(--sr-bg);
  color: var(--sr-text);
}
.card { box-shadow: var(--sr-shadow-card); }
.panel { background: var(--sr-panel); color: var(--sr-text); border-radius: var(--sr-r-panel); }
.card h3, .panel h3 { margin-top: 0; }
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.card-grid > *, .prose > *, .prose div { min-width: 0; }
.prose { max-width: 76ch; margin-inline: auto; }
.prose h2 { margin-top: 2.2em; }
.prose h3 { margin-top: 1.6em; font-size: 24px; }
.prose p, .prose li { line-height: 1.85; }
.prose figure { margin-inline: auto; }
.reveal { opacity: 1; transform: none; }
html.reveal-ready .reveal:not(.shown) { opacity: 0; transform: translateY(18px); }
html.reveal-ready .reveal { transition: opacity 0.6s ease, transform 0.6s var(--sr-ease); }

/* 公告与独立宽版心页头 */
.notice-strip { background: var(--sr-strip); color: var(--sr-on-dark); font-size: 13px; line-height: 1.4; }
.notice-strip__inner {
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 8px 24px;
  text-align: center;
}
.notice-strip__text { margin: 0; font-weight: 500; }
.notice-strip__link { color: var(--sr-on-dark); font-weight: 600; white-space: nowrap; }
#site-header { position: relative; z-index: 60; }
.masthead { position: relative; background: var(--sr-bg); color: var(--sr-text); border-bottom: 1px solid var(--sr-line); }
.masthead__inner {
  position: relative;
  width: 100%;
  max-width: min(100%, calc(var(--sr-header-width) + var(--gutter) * 2));
  min-height: 72px;
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.masthead__brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; color: var(--sr-text); text-decoration: none; }
.masthead__mark { display: block; width: 36px; height: 36px; flex-shrink: 0; border-radius: var(--sr-r-mark); }
.masthead__mark--placeholder { background: var(--sr-panel); color: var(--sr-text); border: 1px solid var(--sr-line); }
.masthead__name { font-family: var(--sr-font-display); font-weight: 800; font-size: 16.5px; letter-spacing: -0.015em; }
.rail { min-width: 0; margin-left: auto; }
.rail__list { display: flex; align-items: center; list-style: none; margin: 0; padding: 0; gap: 2px; }
.rail__link {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 15px;
  border-radius: var(--sr-r-pill);
  font-size: 15px;
  font-weight: 500;
  color: var(--sr-muted);
  text-decoration: none;
  white-space: nowrap;
}
.rail__link:hover { color: var(--sr-text); }
.rail__link[aria-current="page"] { background: var(--sr-lime); color: var(--sr-text); font-weight: 700; }
.masthead__tools { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.lingo-box { position: relative; }
.lingo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 44px;
  padding: 0 4px 0 20px;
  border: 0;
  border-left: 1px solid var(--sr-line);
  background: var(--sr-bg);
  color: var(--sr-text);
  font-size: 14.5px;
  font-weight: 500;
  white-space: nowrap;
}
.lingo svg { width: 17px; height: 17px; }
.lingo__short { display: none; }
.lingo__caret { color: var(--sr-muted); font-size: 12px; }
.lingo-menu {
  position: absolute;
  z-index: 65;
  right: 0;
  top: calc(100% + 8px);
  min-width: 180px;
  padding: 8px;
  border: 1px solid var(--sr-line);
  border-radius: var(--sr-r-note);
  background: var(--sr-bg);
  color: var(--sr-text);
  box-shadow: var(--sr-shadow-menu);
}
.lingo-menu a { display: flex; align-items: center; min-height: 44px; padding: 10px 14px; color: var(--sr-text); text-decoration: none; border-radius: var(--sr-r-small); }
.lingo-menu a:hover, .lingo-menu a[aria-current] { background: var(--sr-panel); color: var(--sr-text); }
.menu-toggle { display: none; min-width: 44px; min-height: 44px; padding: 10px; border: 1px solid var(--sr-line); border-radius: var(--sr-r-mark); background: var(--sr-bg); color: var(--sr-text); }
.menu-toggle svg { width: 22px; height: 22px; }
.mobile-drawer { display: none; }
.nav-veil { position: fixed; inset: 0; z-index: 50; border: 0; background: var(--sr-veil); color: var(--sr-on-dark); }
html.nav-open { overflow: hidden; }

/* 页脚 */
.site-footer { background: var(--sr-panel); color: var(--sr-text); border-top: 1px solid var(--sr-line); padding-top: 64px; padding-bottom: 28px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1.3fr 0.8fr; gap: 40px; }
.footer-brand p { max-width: 28em; color: var(--sr-muted); }
.footer-title { font-size: 15px; margin: 0 0 16px; }
.footer-list { list-style: none; padding: 0; margin: 0; }
.footer-list a { display: inline-block; padding-top: 6px; padding-bottom: 6px; color: var(--sr-muted); text-decoration: none; }
.footer-list a:hover { color: var(--sr-olive); text-decoration: underline; }
.footer-bottom { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--sr-line-strong); display: flex; flex-wrap: wrap; gap: 12px 24px; font-size: 13px; color: var(--sr-muted); }
.footer-bottom p { margin: 0; }
.footer-bottom a { color: var(--sr-muted); }

/* 已确认的暖光首屏 */
.stagebox {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin: 8px 24px 0;
  height: clamp(620px, calc(100vh - 172px), 780px);
  padding: 0 40px 0 var(--sr-inset);
  border-radius: var(--sr-r-canvas);
  background: var(--sr-ink-warm);
  color: var(--sr-on-dark);
  display: grid;
  grid-template-columns: minmax(0, 11fr) minmax(0, 9fr);
  align-items: center;
}
.stagebox::before { content: ""; position: absolute; inset: 0; z-index: -2; background: radial-gradient(ellipse 58% 78% at 88% -8%, var(--sr-amber) 0%, var(--sr-ink-warm) 72%); }
.stagebox__beam {
  position: absolute;
  z-index: -1;
  top: -18%;
  right: 4%;
  width: 40%;
  height: 128%;
  transform: rotate(24deg);
  transform-origin: 50% 0;
  background: linear-gradient(90deg, var(--sr-clear) 0%, var(--sr-amber-beam) 20%, var(--sr-clear) 40%, var(--sr-clear) 54%, var(--sr-amber-beam) 68%, var(--sr-clear) 88%);
  mask-image: linear-gradient(180deg, var(--sr-mask) 0%, var(--sr-clear) 72%);
  opacity: 0.55;
  pointer-events: none;
}
.lede { position: relative; z-index: 2; max-width: 660px; padding-right: 24px; }
.lede__tag { display: inline-flex; align-items: center; gap: 10px; margin: 0 0 24px; padding: 6px 14px 6px 12px; border: 1px solid var(--sr-on-dark-line); border-radius: var(--sr-r-pill); background: var(--sr-on-dark-fill); color: var(--sr-on-dark-2); font-size: 13px; font-weight: 600; line-height: 1.3; }
.pulse-dot { position: relative; width: 8px; height: 8px; border-radius: var(--sr-r-round); background: var(--sr-lime); color: var(--sr-text); flex-shrink: 0; }
.pulse-dot::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: var(--sr-lime); color: var(--sr-text); opacity: 0; animation: sr-breathe 2.4s ease-out 0.3s 3; }
.lede__title { margin: 0; font-size: var(--sr-h1); line-height: 1.16; color: var(--sr-on-dark); }
.lede__line { display: block; }
.lede__key { color: var(--sr-lime); font-style: normal; }
.lede__desc { margin: 20px 0 0; max-width: 34em; font-size: 17px; line-height: 1.72; color: var(--sr-on-dark-2); }
.lede__desc strong { color: var(--sr-on-dark); font-weight: 600; }
.stagebox :focus-visible { outline-color: var(--sr-lime); }
.platform-row { list-style: none; margin: 26px 0 0; padding: 20px 0 0; border-top: 1px solid var(--sr-on-dark-line); display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; max-width: 680px; }
.platform-row__item { display: inline-flex; align-items: center; gap: 6px; color: var(--sr-on-dark-2); font-size: 13px; font-weight: 500; text-decoration: none; white-space: nowrap; }
.platform-row__item svg { width: 15px; height: 15px; }
.platform-row__price { margin-left: 2px; padding: 4px 12px; border: 1px solid var(--sr-price-line); border-radius: var(--sr-r-pill); color: var(--sr-on-dark); font-size: 12.5px; font-weight: 600; }
.gadget { position: relative; z-index: 1; margin: 0; justify-self: center; width: min(100%, 580px); aspect-ratio: 580 / 640; }
.gadget__orbit { position: absolute; left: 32%; top: 50%; aspect-ratio: 1; border-radius: var(--sr-r-round); transform: translate(-50%, -50%); pointer-events: none; }
.gadget__orbit--inner { width: 69%; border: 1px solid var(--sr-lime-ring); }
.gadget__orbit--outer { width: 93%; border: 1px dashed var(--sr-lime-ring-2); }
.gadget__knot { position: absolute; left: 75.9%; top: 35.6%; width: 8px; height: 8px; margin: -4px 0 0 -4px; border-radius: var(--sr-r-round); background: var(--sr-lime); color: var(--sr-text); box-shadow: var(--sr-shadow-dot); }
.gadget__floor { position: absolute; left: 32%; bottom: 3%; width: 54%; height: 7%; transform: translateX(-50%); background: radial-gradient(closest-side, var(--sr-floor), var(--sr-clear)); }
.handset { position: absolute; z-index: 1; left: 10%; top: 9%; width: 44%; aspect-ratio: 0.487; border-radius: var(--sr-r-phone); background: var(--sr-phone); color: var(--sr-on-dark); border: 1px solid var(--sr-phone-edge); box-shadow: var(--sr-shadow-phone); transform: rotate(-4deg); }
.handset::before { content: ""; position: absolute; left: -4px; top: 21%; width: 3px; height: 7%; background: var(--sr-phone-btn); box-shadow: 0 54px 0 var(--sr-phone-btn); }
.handset::after { content: ""; position: absolute; right: -4px; top: 27%; width: 3px; height: 11%; background: var(--sr-phone-btn); }
.handset__screen { position: absolute; inset: 9px; overflow: hidden; border-radius: var(--sr-r-screen); background: linear-gradient(162deg, var(--sr-screen-a) 0%, var(--sr-screen-b) 80%); color: var(--sr-on-dark); }
.handset__island { position: absolute; top: 13px; left: 50%; width: 30%; height: 22px; transform: translateX(-50%); border-radius: var(--sr-r-pill); background: var(--sr-island); }
.handset__ring { position: absolute; left: 50%; top: 50%; aspect-ratio: 1; border-radius: var(--sr-r-round); transform: translate(-50%, -50%); }
.handset__ring--a { width: 58%; border: 1px solid var(--sr-lime-ring); }
.handset__ring--b { width: 88%; border: 1px solid var(--sr-lime-ring-2); }
.tabnote { position: absolute; z-index: 2; animation: sr-rise var(--sr-enter) var(--sr-ease) both; }
.tabnote--one { left: 36%; top: 12%; width: 296px; animation-delay: 0.25s; }
.tabnote--two { left: 42%; top: 40%; width: 292px; animation-delay: 0.4s; }
.tabnote--three { left: 47%; top: 68%; width: 272px; animation-delay: 0.55s; }
.tabnote__float { padding: 16px 18px 17px; border: 1px solid var(--sr-line); border-radius: var(--sr-r-note); background: var(--sr-bg); color: var(--sr-text); box-shadow: var(--sr-shadow-note); animation: sr-drift 7s ease-in-out infinite; }
.tabnote--one .tabnote__float { animation-duration: 6.4s; animation-delay: -1s; }
.tabnote--two .tabnote__float { animation-duration: 7.2s; animation-delay: -3.4s; }
.tabnote--three .tabnote__float { animation-duration: 8s; animation-delay: -5.6s; }
.tabnote__head { display: flex; align-items: center; gap: 8px; margin: 0 0 11px; font-size: 13px; font-weight: 700; line-height: 20px; color: var(--sr-text); }
.tabnote__head--label { font-size: 12.5px; font-weight: 600; color: var(--sr-muted); }
.tabnote__num { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; width: 20px; height: 20px; border-radius: var(--sr-r-round); background: var(--sr-lime); color: var(--sr-text); font-size: 11.5px; font-weight: 800; }
.tabnote__code { margin: 0; font-family: var(--sr-font-mono); font-size: 13px; line-height: 1.6; letter-spacing: -0.01em; overflow-wrap: anywhere; }
.tabnote__code--dim { color: var(--sr-muted); }
.tabnote__text { margin: 0; font-size: 13.5px; line-height: 1.6; }
.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.chips__item { padding: 4px 11px; border: 1px solid var(--sr-line); border-radius: var(--sr-r-pill); background: var(--sr-panel); color: var(--sr-muted); font-size: 12px; font-weight: 600; line-height: 1.4; overflow-wrap: anywhere; max-width: 100%; }
.chips__item--on { border-color: var(--sr-lime); background: var(--sr-lime); color: var(--sr-text); }

/* 手册脊柱 */
.atlas { position: relative; overflow-x: clip; padding: 40px var(--gutter) 120px; }
.atlas__eyebrow { margin: 0 0 14px; text-align: center; font-size: 13px; font-weight: 600; color: var(--sr-muted); }
.atlas__title { margin: 0 auto; max-width: 22em; text-align: center; font-size: var(--sr-h2); }
.atlas__title em { color: var(--sr-olive); font-style: normal; }
.atlas__lead { margin: 18px auto 0; max-width: 40em; text-align: center; font-size: 17px; line-height: 1.72; color: var(--sr-muted); }
.atlas__cta { display: flex; justify-content: center; margin-top: 30px; }
.atlas__cta .btn { min-height: 50px; font-size: 15.5px; }
.atlas__node { position: relative; z-index: 1; display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; margin: 56px auto 0; border-radius: var(--sr-r-round); background: var(--sr-olive); color: var(--sr-on-dark); }
.atlas__node svg { width: 20px; height: 20px; }
.atlas__track { position: relative; max-width: var(--sr-wide-width); margin-inline: auto; padding-top: 80px; display: grid; gap: 80px; }
.atlas__track::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: var(--sr-line-strong); }
.facet { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; min-height: 400px; padding: 64px; border-radius: var(--sr-r-panel); background: var(--sr-panel); color: var(--sr-text); }
.facet:nth-child(even) .facet__copy { order: 2; }
.facet__title { margin: 0; font-size: 30px; line-height: 1.25; }
.facet__body { margin: 18px 0 0; max-width: 30em; font-size: 16.5px; line-height: 1.8; color: var(--sr-muted); }
.facet__body code { color: var(--sr-text); }
.facet__visual { position: relative; min-height: 272px; }
.memo { position: absolute; width: min(100%, 330px); padding: 18px 20px; border: 1px solid var(--sr-line); border-radius: var(--sr-r-note); background: var(--sr-bg); color: var(--sr-text); box-shadow: var(--sr-shadow-card); }
.memo--a { top: 4%; right: 6%; }
.memo--b { top: 52%; right: 30%; }
.decorated { position: relative; overflow-x: clip; }

@keyframes sr-rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }
@keyframes sr-drift { 0%, 100% { transform: translateY(4px); } 50% { transform: translateY(-4px); } }
@keyframes sr-breathe { 0% { opacity: 0.55; transform: scale(1); } 100% { opacity: 0; transform: scale(2.8); } }

@media (max-width: 1200px) {
  .rail { display: none; }
  .masthead__tools { margin-left: auto; }
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .mobile-drawer:not([hidden]) {
    display: block;
    position: absolute;
    z-index: 64;
    top: 100%;
    left: 0;
    right: 0;
    max-height: calc(100dvh - 120px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 16px var(--gutter) 24px;
    border-bottom: 1px solid var(--sr-line);
    background: var(--sr-bg);
    color: var(--sr-text);
    box-shadow: var(--sr-shadow-menu);
  }
  .mobile-drawer ul { list-style: none; margin: 0; padding: 0; }
  .mobile-drawer a { display: flex; width: 100%; min-height: 48px; align-items: center; padding: 12px 16px; border-radius: var(--sr-r-mark); text-decoration: none; color: var(--sr-muted); }
  .mobile-drawer a[aria-current="page"] { background: var(--sr-lime); color: var(--sr-text); font-weight: 700; }
  .mobile-drawer a[aria-current="true"] { background: var(--sr-panel); color: var(--sr-text); }
  .mobile-drawer__languages { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--sr-line); }
  .mobile-drawer__label { margin: 0 16px 8px; font-size: 13px; color: var(--sr-muted); }
}
@media (max-width: 1200px) {
  :root { --sr-inset: 48px; }
  .tabnote--one { width: 60%; }
  .tabnote--two { width: 56%; }
  .tabnote--three { width: 52%; }
  .tabnote__code { font-size: 12px; }
}
@media (max-width: 860px) {
  .stagebox { height: auto; grid-template-columns: minmax(0, 1fr); margin-inline: 12px; padding: 36px 20px 0; border-radius: var(--sr-r-mobile); row-gap: 28px; }
  .stagebox__beam { width: 70%; right: -10%; }
  .lede { padding-right: 0; }
  .lede__tag { margin-bottom: 18px; }
  .lede__title { font-size: clamp(26px, 7vw, 30px); line-height: 1.22; }
  .lede__desc { margin-top: 14px; font-size: 15px; }
  .platform-row { gap: 10px 14px; }
  .gadget { width: 100%; aspect-ratio: auto; height: 360px; }
  .gadget__orbit { left: 50%; top: 178px; }
  .gadget__orbit--inner { width: 260px; }
  .gadget__orbit--outer { width: 340px; }
  .gadget__knot, .gadget__floor { display: none; }
  .handset { left: 50%; top: 18px; width: 156px; border-radius: var(--sr-r-phone-mobile); transform: translateX(-50%) rotate(-4deg); }
  .handset__screen { inset: 7px; border-radius: var(--sr-r-screen-mobile); }
  .handset__island { top: 9px; height: 15px; }
  .tabnote--one { left: 0; top: 226px; width: calc(50% - 5px); }
  .tabnote--two { left: auto; right: 0; top: 244px; width: calc(50% - 5px); }
  .tabnote--three { display: none; }
  .tabnote__float { padding: 13px 13px 14px; border-radius: var(--sr-r-mobile-note); }
  .tabnote__head { font-size: 12px; margin-bottom: 8px; }
  .tabnote__code { font-size: 11px; }
  .atlas { padding: 48px var(--gutter) 80px; }
  .atlas__lead { font-size: 15.5px; }
  .atlas__node { margin: 40px 0 0 -4px; }
  .atlas__track { padding-top: 48px; gap: 48px; }
  .atlas__track::before { left: 20px; }
  .facet { grid-template-columns: minmax(0, 1fr); gap: 28px; min-height: 0; padding: 32px 24px; border-radius: var(--sr-r-mobile-panel); }
  .facet:nth-child(even) .facet__copy { order: initial; }
  .facet__title { font-size: 24px; }
  .facet__body { font-size: 15.5px; }
  .facet__visual { min-height: 0; display: grid; gap: 12px; }
  .memo { position: relative; top: auto; right: auto; width: 100%; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 768px) {
  :root { --sr-h1: clamp(24px, 6vw, 30px); --sr-h2: clamp(24px, 5vw, 30px); --sr-h3: 24px; }
}
@media (max-width: 640px) {
  :root { --sr-gutter: 16px; }
  .notice-strip__inner { flex-wrap: wrap; gap: 4px 12px; font-size: 12px; padding-inline: 16px; }
  .notice-strip__link { margin-left: auto; }
  .masthead__inner { min-height: 64px; gap: 10px; }
  .masthead__brand { gap: 8px; }
  .masthead__name { font-size: 13px; }
  .masthead__mark { width: 30px; height: 30px; }
  .masthead__tools { margin-left: auto; gap: 4px; }
  .lingo { padding-inline: 8px; border-left: 0; }
  .lingo__full { display: none; }
  .lingo__short { display: inline; }
  .lingo svg { display: none; }
  .card-grid { grid-template-columns: minmax(0, 1fr); }
  .card, .panel { padding: 24px; }
  .section { padding-top: 48px; padding-bottom: 48px; }
  .btn { min-height: 50px; padding: 12px 22px; font-size: 15px; }
  .footer-grid { gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { display: block; }
  .footer-bottom > * { margin-bottom: 12px; }
  .tilt, [data-tilt] { transform: none !important; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .tabnote, .tabnote__float, .pulse-dot::after { animation: none; }
  .btn, .rail__link, html.reveal-ready .reveal { transition: none; }
  html.reveal-ready .reveal:not(.shown) { opacity: 1; transform: none; }
}
/* 预览页不运行交互或循环动效 */
.design-preview .tabnote, .design-preview .tabnote__float, .design-preview .pulse-dot::after { animation: none; }
.design-preview .preview-menu { display: none; }
.design-preview .preview-menu[open] { display: block; }
.preview-menu summary { cursor: pointer; min-height: 44px; padding: 10px; }
@media (max-width: 1200px) {
  .design-preview .preview-menu { display: block; }
  .preview-menu .mobile-drawer { top: 100%; }
}