/* 文件用途：穿小记 H5 介绍页的品牌视觉、语义化产品说明、响应式布局及网站备案栏。 */
/* 全局色板与尺寸：集中维护介绍页的颜色、正文宽度和字体。 */
:root {
  --ink:#292a25;
  --muted:#797a70;
  --yellow:#ffda55;
  --cream:#fbfaf6;
  --line:#e8e6de;
  --max:1160px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  color-scheme:light;
  font-family:var(--font);
  color:var(--ink);
  background:var(--cream);
  font-synthesis:none;
}
* {
  box-sizing:border-box;
}
html {
  scroll-behavior:smooth;
  scroll-padding-top:100px;
}
body {
  margin:0;
  -webkit-font-smoothing:antialiased;
}
button,a {
  -webkit-tap-highlight-color:transparent;
}
button,input {
  font:inherit;
}
button {
  cursor:pointer;
}
a {
  color:inherit;
  text-decoration:none;
}
img {
  display:block;
  max-width:100%;
}
button {
  color:inherit;
}
button:disabled {
  cursor:default;
}
h1,h2,h3,p {
  margin:0;
}
svg {
  display:inline-block;
}
button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible {
  outline:3px solid #967128;
  outline-offset:5px;
}
[hidden] {
  display:none!important;
}
::selection {
  background:#ffdf6b;
  color:#292a25;
}
.container {
  width:min(var(--max),calc(100% - 80px));
  margin-inline:auto;
}
.icon-library {
  position:absolute;
  width:0;
  height:0;
  overflow:hidden;
}
.icon {
  width:22px;
  height:22px;
  fill:none;
  stroke:currentColor;
  stroke-width:1.7;
  stroke-linecap:round;
  stroke-linejoin:round;
  flex-shrink:0;
}
.skip-link {
  position:fixed;
  top:-70px;
  left:20px;
  background:white;
  padding:14px;
  z-index:100;
}
.skip-link:focus {
  top:12px;
}
.button {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:16px;
  min-height:56px;
  padding:0 27px;
  border:1px solid transparent;
  border-radius:15px;
  font-size:15px;
  font-weight:700;
  line-height:1.4;
  transition:transform .2s,background .2s,box-shadow .2s;
}
.button:hover {
  transform:translateY(-3px);
}
.button-yellow {
  background:var(--yellow);
  box-shadow:0 6px 0 #e9bf39;
}
.button-yellow:hover {
  background:#ffe373;
  box-shadow:0 8px 0 #e9bf39;
}
.button-dark {
  background:var(--ink);
  color:white;
}
.button-dark:hover {
  background:#45463c;
}
.button-small {
  min-height:43px;
  padding-inline:20px;
  font-size:12px;
  border-radius:11px;
  gap:14px;
}
.button-small .icon {
  width:17px;
  height:17px;
}
.button-outline {
  background:transparent;
  border-color:#b49b45;
}
.button-outline:hover {
  background:#fff2bc;
}
.text-button {
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  font-weight:600;
}
.play-circle {
  display:grid;
  place-items:center;
  width:31px;
  height:31px;
  border:1px solid #d2d1c7;
  border-radius:50%;
}
.play-circle .icon {
  width:13px;
  height:13px;
  fill:var(--ink);
  stroke-width:1;
}
.section-space {
  padding:100px 0;
}
.section-kicker {
  display:block;
  font-size:10px;
  letter-spacing:2.2px;
  font-weight:700;
  color:#929182;
  margin-bottom:18px;
}
.section-heading {
  display:flex;
  justify-content:space-between;
  align-items:end;
  margin-bottom:46px;
  gap:28px;
}
.section-heading h2,.experience h2 {
  font-size:36px;
  font-weight:800;
  letter-spacing:-1.3px;
  line-height:1.5;
}
.section-heading>p {
  font-size:13px;
  line-height:1.9;
  color:var(--muted);
  padding-bottom:5px;
}
.soft-marker {
  position:relative;
  z-index:0;
  white-space:nowrap;
}
.soft-marker::after {
  content:"";
  position:absolute;
  z-index:-1;
  inset:61% -5px 0;
  background:#ffe68b;
  transform:rotate(-2deg);
  border-radius:1px;
}
/* 顶部导航：宽屏展示锚点，窄屏保留品牌与主要入口。 */
.site-header {
  position:relative;
  z-index:10;
  background:#fbfaf6d9;
  border-bottom:1px solid #eeede5;
}
.header-inner {
  height:91px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand {
  display:inline-flex;
  gap:10px;
  align-items:center;
  font-size:22px;
  font-weight:800;
  letter-spacing:-1px;
  white-space:nowrap;
}
.brand img {
  width:40px;
  height:40px;
  object-fit:contain;
  border-radius:12px;
}
.brand-dot {
  color:#c7a234;
  font-size:27px;
  margin-left:2px;
}
.desktop-nav {
  display:flex;
  gap:36px;
  font-size:12px;
  color:#707168;
}
.desktop-nav a {
  padding:12px 0;
}
.desktop-nav a:hover {
  color:#292a25;
}
/* 品牌首屏：双手机、淡色光晕与手绘标记共同承载真实 App 截图。 */
.hero {
  position:relative;
  overflow:hidden;
  padding:50px 0 0;
}
.hero-glow {
  position:absolute;
  inset:-160px -220px -40px 30%;
  background:radial-gradient(ellipse at 64% 37%,#ede7f2b3,transparent 55%),radial-gradient(ellipse at 65% 67%,#faf0c8a6,transparent 52%);
  pointer-events:none;
}
.hero-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:center;
  min-height:640px;
  position:relative;
}
.hero-copy {
  padding:16px 0 48px;
  position:relative;
  z-index:2;
}
.eyebrow {
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:11px;
  font-weight:500;
  color:#707167;
  margin-bottom:30px;
}
.little-spark {
  color:#967c27;
  font-size:20px;
}
.hero h1 {
  font-size:70px;
  line-height:1.35;
  font-weight:850;
  letter-spacing:-4px;
}
/* 可见的产品名称：在主标题中说明品牌和阅读类型，不以隐藏文本堆砌关键词。 */
.hero-product-name {
  display:block;
  margin-bottom:14px;
  font-size:14px;
  line-height:1.6;
  font-weight:600;
  letter-spacing:1px;
  color:var(--muted);
}
.marker {
  position:relative;
  z-index:0;
  white-space:nowrap;
}
.marker::before {
  content:"";
  position:absolute;
  z-index:-1;
  inset:43% -8px 8%;
  background:var(--yellow);
  transform:rotate(-4deg);
  border-radius:3px;
}
.marker svg {
  position:absolute;
  width:104%;
  height:15px;
  left:-2%;
  bottom:-7px;
  fill:none;
  stroke:#dfbd37;
  stroke-width:3;
  stroke-linecap:round;
}
.title-period {
  margin-left:3px;
}
.hero-description {
  margin-top:29px;
  font-size:15px;
  line-height:2.05;
  color:#7a7b71;
  letter-spacing:.3px;
}
.mobile-break {
  display:none;
}
.hero-actions {
  display:flex;
  align-items:center;
  gap:27px;
  margin-top:33px;
}
.hero-footnote {
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:33px;
  color:#96958a;
  font-size:11px;
}
.mini-heart {
  font-size:20px;
  color:#77796b;
}
.hero-visual {
  position:relative;
  height:650px;
  margin-left:-6px;
}
.orbit {
  position:absolute;
  border:1px solid #d6d3bd80;
  border-radius:50%;
  width:530px;
  height:530px;
  top:61px;
  left:4px;
}
.orbit-two {
  width:620px;
  height:620px;
  top:16px;
  left:-41px;
  border-style:dashed;
  opacity:.5;
  transform:rotate(18deg);
}
.phone {
  position:absolute;
  background:#fdfcf8;
  border:5px solid #fffdf7;
  border-radius:35px;
  padding:13px 5px 7px;
  box-shadow:0 25px 50px #3632281f,0 0 0 1px #d1cdc5;
  overflow:hidden;
}
.phone-camera {
  position:absolute;
  top:5px;
  left:50%;
  transform:translateX(-50%);
  width:49px;
  height:6px;
  border-radius:10px;
  background:#dcdad3;
  z-index:2;
}
.screen-viewport {
  position:relative;
  display:block;
  aspect-ratio:900/1765;
  overflow:hidden;
  border-radius:24px;
  background:#f6f4f6;
}
.screen-viewport>img {
  position:absolute;
  width:100%;
  max-width:none;
  height:auto;
  top:-8.4%;
  left:0;
}
/* 启动图专用视口：按原图比例完整展示，不应用产品截图的顶部偏移裁切。 */
.screen-viewport-start {
  aspect-ratio:393/852;
  background:#ffffc9;
}
.screen-viewport-start>img {
  position:static;
  width:100%;
  height:auto;
}
.phone-home {
  width:248px;
  left:19px;
  top:96px;
  transform:rotate(-9deg);
  z-index:1;
}
.phone-reader {
  width:253px;
  left:263px;
  top:45px;
  transform:rotate(10deg);
  z-index:2;
  box-shadow:0 25px 50px #36322829,0 0 0 1px #d1cdc5;
}
.floating-note {
  position:absolute;
  display:flex;
  align-items:center;
  gap:11px;
  padding:13px 16px;
  background:#fffffff2;
  border:1px solid white;
  border-radius:15px;
  box-shadow:0 11px 28px #3e382d0b;
  z-index:3;
  font-size:12px;
  line-height:1.7;
  font-weight:700;
  white-space:nowrap;
}
.floating-note div>span {
  display:block;
  font-size:10px;
  font-weight:400;
  color:#99978d;
}
.note-icon {
  display:grid;
  place-items:center;
  width:33px;
  height:33px;
  border-radius:10px;
  background:#f4eaf1;
  color:#b689a6;
  font-size:28px;
  font-weight:400;
}
.yellow-icon {
  background:#fff0b1;
  color:#6a5a25;
}
.yellow-icon .icon {
  width:20px;
  height:20px;
}
.note-top {
  right:-11px;
  top:100px;
  transform:rotate(4deg);
}
.note-bottom {
  left:0;
  bottom:90px;
  transform:rotate(-5deg);
  padding-right:43px;
}
.note-cursor {
  position:absolute;
  font-size:39px;
  right:-17px;
  bottom:-33px;
  color:#5e5e4e;
  text-shadow:2px 2px white;
}
.doodle {
  position:absolute;
  z-index:3;
}
.doodle-star {
  top:30px;
  left:84px;
  font-size:48px;
  color:#d9bb41;
  transform:rotate(15deg);
}
.doodle-heart {
  right:-13px;
  bottom:109px;
  font-size:70px;
  color:#a9b5a0;
  transform:rotate(16deg);
}
.visual-caption {
  position:absolute;
  bottom:18px;
  left:135px;
  font-size:8px;
  color:#aaa493;
  letter-spacing:2px;
  transform:rotate(-1deg);
}
.hero-bottom {
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:28px 0 30px;
  font-size:10px;
  letter-spacing:1px;
  color:#a3a195;
  border-top:1px solid #e7e5da;
}
.hero-bottom a {
  display:flex;
  gap:24px;
  align-items:center;
}
.hero-bottom a span {
  font-size:19px;
}
.story-ribbon {
  overflow:hidden;
  background:#f2f0e5;
  border-top:1px solid #e8e6db;
  border-bottom:1px solid #e8e6db;
}
.story-ribbon>div {
  display:flex;
  justify-content:center;
  gap:43px;
  align-items:center;
  white-space:nowrap;
  padding:19px 30px;
  font-size:12px;
  color:#7b7c6d;
  letter-spacing:1px;
}
.story-ribbon i {
  font-style:normal;
  color:#c7b35d;
  font-size:18px;
}
/* 功能介绍：用可视化的选项、场景和书架表达三项已有产品能力。 */
.feature-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
/* 产品事实摘要：为访客直接说明 App 类型和核心功能。 */
.product-summary {
  max-width:760px;
  margin:-15px 0 30px;
  font-size:14px;
  line-height:1.9;
  color:var(--muted);
}
.feature {
  border-radius:22px;
  padding:28px 27px 31px;
  overflow:hidden;
  min-width:0;
}
.feature-choice {
  background:#f4f0e3;
}
.feature-scene {
  background:#eeedf3;
}
.feature-shelf {
  background:#edf0e8;
}
.feature-number {
  font-size:8px;
  font-weight:700;
  letter-spacing:1.5px;
  color:#96917e;
}
.feature h3 {
  font-size:21px;
  font-weight:700;
  letter-spacing:-.4px;
  margin:21px 0 12px;
}
.feature>p {
  font-size:12px;
  line-height:1.95;
  color:#818276;
}
.feature-illustration,.scene-illustration,.shelf-illustration {
  height:194px;
  margin-top:24px;
  position:relative;
}
.choice-illustration {
  padding:13px 10px 0;
}
.mini-dialog {
  font-size:12px;
  font-weight:600;
  margin-bottom:15px;
}
.mini-option {
  display:flex;
  justify-content:space-between;
  border:1px solid #c9b15d;
  border-radius:9px;
  background:#ffdf73;
  padding:12px 15px;
  font-size:11px;
  transform:rotate(-3deg);
  box-shadow:0 5px 0 #e3dbc4;
}
.option-muted {
  background:#fbf9ef;
  border-color:#ded9c9;
  transform:rotate(2deg);
  margin-top:13px;
  box-shadow:none;
  color:#8a8778;
}
.illustration-cursor {
  font-size:40px;
  position:absolute;
  right:-1px;
  top:74px;
  text-shadow:2px 2px #fffdf5;
  transform:rotate(-6deg);
}
.scene-illustration {
  overflow:hidden;
  border-radius:12px;
  transform:rotate(-3deg);
  box-shadow:0 7px 0 #dedbe6;
}
.scene-illustration img {
  position:absolute;
  top:-58%;
  left:0;
  width:100%;
  max-width:none;
}
.scene-illustration::after {
  content:"";
  position:absolute;
  inset:50% 0 0;
  background:linear-gradient(transparent,#101522aa);
}
.scene-subtitle {
  position:absolute;
  z-index:1;
  bottom:16px;
  left:17px;
  color:#ffefc6;
  font-size:10px;
  letter-spacing:1px;
}
.scene-star {
  position:absolute;
  right:15px;
  top:9px;
  font-size:35px;
  color:#ffe5a7;
}
.shelf-illustration {
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding-bottom:20px;
}
.tiny-book {
  width:70px;
  height:119px;
  flex-shrink:0;
  border-radius:3px 7px 7px 3px;
  padding:14px 9px;
  font-size:11px;
  font-weight:600;
  line-height:1.8;
  box-shadow:3px 5px 7px #6e73551a;
  border-left:4px solid #ffffff40;
  position:relative;
}
.tiny-book span {
  position:absolute;
  bottom:11px;
  right:11px;
  font-size:22px;
  font-weight:400;
}
.book-one {
  background:#b7c4ae;
  transform:rotate(-12deg) translateY(3px);
  color:#43523c;
}
.book-two {
  background:#e1c7b8;
  transform:rotate(3deg);
  color:#735545;
  z-index:1;
}
.book-three {
  background:#cec8e0;
  transform:rotate(13deg) translateY(6px);
  color:#655c7d;
}
.shelf-line {
  position:absolute;
  bottom:37px;
  left:2px;
  right:2px;
  height:8px;
  background:#cfd6c4;
  border-radius:5px;
  box-shadow:0 6px 0 #e0e6d8;
}
.shelf-sticker {
  position:absolute;
  bottom:0;
  font-size:9px;
  background:#fffcf1;
  padding:6px 12px;
  transform:rotate(-5deg);
  border-radius:3px;
  color:#7e8474;
}
/* 本地剧情示例：独立于正式业务数据，用选项展示互动阅读的形式。 */
.experience {
  padding-top:45px;
}
.experience-grid {
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:100px;
  align-items:center;
}
.experience h2 {
  font-size:42px;
  line-height:1.55;
}
.experience-copy>p {
  font-size:13px;
  line-height:2;
  color:#828376;
  margin-top:22px;
}
.experience-hint {
  display:flex;
  gap:11px;
  align-items:center;
  margin-top:32px;
  font-size:11px;
  color:#737668;
}
.experience-hint .icon {
  width:20px;
  height:20px;
}
.demo-disclaimer {
  display:block;
  font-size:9px;
  color:#aaa99e;
  margin-top:18px;
}
.story-demo {
  position:relative;
  overflow:hidden;
  border-radius:24px;
  min-height:410px;
  background:#1b2230;
  color:#fff9e8;
  box-shadow:0 16px 40px #27221912;
}
.demo-backdrop {
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center 15%;
  max-width:none;
  pointer-events:none;
}
.demo-shade {
  position:absolute;
  inset:0;
  background:linear-gradient(#0c162236,#111b2440 25%,#101722e8 100%);
}
.demo-topline {
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:25px 27px;
  font-size:10px;
  color:#ded5bd;
  letter-spacing:.5px;
}
.demo-topline>span:first-child {
  display:flex;
  align-items:center;
  gap:7px;
}
.live-dot {
  width:5px;
  height:5px;
  border-radius:50%;
  background:#ffdc74;
  box-shadow:0 0 8px #ffe8a0;
}
.demo-content {
  position:relative;
  padding:62px 30px 28px;
  z-index:1;
}
.speaker {
  display:inline-block;
  font-size:10px;
  color:#efd797;
  border-bottom:1px solid #bfa968;
  padding-bottom:5px;
  letter-spacing:2px;
}
.demo-text {
  font-size:14px;
  line-height:2;
  min-height:63px;
  margin-top:15px;
  text-shadow:0 2px 6px #0005;
}
.demo-options {
  display:grid;
  gap:11px;
  margin-top:22px;
}
.demo-options button {
  display:flex;
  justify-content:space-between;
  gap:14px;
  text-align:left;
  border:1px solid #c8ac61aa;
  border-radius:8px;
  background:#faf4dcf2;
  color:#67512e;
  padding:12px 15px;
  font-size:11px;
  transition:background .2s,transform .2s;
}
.demo-options button:hover {
  background:#ffe6a2;
  transform:translateX(3px);
}
.demo-options button span {
  color:#a68745;
}
.demo-ending {
  display:flex;
  justify-content:space-between;
  gap:16px;
  align-items:center;
  margin-top:25px;
  min-height:80px;
  font-size:11px;
  color:#f8d981;
}
.demo-restart {
  padding:10px 12px;
  border:1px solid #d6be82;
  border-radius:8px;
  background:#ffedb91a;
  color:#fff1c7;
  font-size:11px;
  white-space:nowrap;
}
/* 截图展示区：语义化标签切换单个展示面板，完整原图通过弹层查看。 */
.screens-section {
  background:#f4f3ed;
  border-block:1px solid #ebe9e0;
}
.screens-layout {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:110px;
  align-items:center;
}
.screen-menu {
  display:flex;
  flex-direction:column;
  gap:9px;
}
.screen-tab {
  display:flex;
  align-items:center;
  gap:19px;
  padding:23px 22px;
  background:transparent;
  border:1px solid transparent;
  border-radius:15px;
  text-align:left;
  transition:background .2s,border-color .2s;
}
.screen-tab.active {
  background:#fffdf5;
  border-color:#e9deba;
  box-shadow:0 5px 12px #554c2e03;
}
.screen-tab:hover {
  background:#fdfbf3;
}
.tab-index {
  font-size:11px;
  color:#9a9b8d;
  align-self:flex-start;
  padding-top:4px;
  font-family:Georgia,serif;
}
.screen-tab.active .tab-index {
  color:#9f821e;
}
.screen-tab strong {
  display:block;
  font-size:17px;
  font-weight:600;
}
.screen-tab small {
  display:block;
  font-size:11px;
  color:#9a998e;
  margin-top:8px;
  line-height:1.7;
}
.screen-tab>.icon {
  width:18px;
  height:18px;
  margin-left:auto;
  color:#aeab9b;
  opacity:0;
  transition:opacity .2s;
}
.screen-tab.active>.icon {
  opacity:1;
  color:#9f821e;
}
.screen-stage {
  position:relative;
  min-height:610px;
  display:flex;
  align-items:center;
  justify-content:center;
  padding-bottom:35px;
}
.stage-circle {
  position:absolute;
  width:400px;
  height:400px;
  background:#ece7d5;
  border-radius:50%;
  top:72px;
}
.showcase-phone {
  position:relative;
  z-index:1;
  background:#fffef9;
  border:5px solid #fffef9;
  padding:13px 5px 6px;
  border-radius:34px;
  width:250px;
  box-shadow:0 18px 35px #39362817,0 0 0 1px #d7d3c6;
  transform:rotate(4deg);
  transition:transform .3s;
}
.showcase-phone:hover {
  transform:rotate(0) translateY(-4px);
}
.showcase-phone .screen-viewport {
  border-radius:24px;
}
.stage-doodle {
  position:absolute;
  z-index:2;
  font-weight:400;
}
.stage-star {
  top:50px;
  left:29px;
  font-size:53px;
  color:#b8aa70;
  transform:rotate(10deg);
}
.stage-heart {
  right:2px;
  bottom:150px;
  font-size:73px;
  color:#a4b298;
  transform:rotate(-14deg);
}
.stage-label {
  position:absolute;
  bottom:0;
  left:0;
  right:0;
  text-align:center;
  font-size:12px;
  color:#78796e;
}
.stage-label small {
  display:block;
  font-size:9px;
  color:#acaa9d;
  margin-top:9px;
}
.gallery-strip {
  margin-top:42px;
  border-top:1px solid #deddd2;
  padding-top:25px;
  display:flex;
  align-items:center;
  gap:30px;
  font-size:11px;
  color:#88897d;
}
.gallery-strip>div {
  display:flex;
  gap:12px;
}
.gallery-link {
  background:#fffdf6;
  border:1px solid #e1dfd2;
  border-radius:22px;
  padding:10px 15px;
  font-size:10px;
}
.gallery-link span {
  margin-left:14px;
}
.gallery-link:hover {
  background:#fff2bd;
}
.gallery-tip {
  margin-left:auto;
  color:#aaa99c;
  font-size:9px;
}
/* 下载预告与页尾：未配置真实地址时明确显示待开放，避免生成无效下载。 */
.download-section {
  padding:100px 0 68px;
}
.download-panel {
  position:relative;
  overflow:hidden;
  border-radius:28px;
  background:#ffdd68;
  display:grid;
  grid-template-columns:1.25fr 1fr;
  gap:30px;
  padding:65px 65px 61px;
}
.download-panel::after {
  content:"";
  position:absolute;
  width:600px;
  height:600px;
  border:1px solid #fff7d17a;
  border-radius:50%;
  right:-260px;
  top:-260px;
  box-shadow:0 0 0 50px #ffffff0c,0 0 0 100px #ffffff0c;
  pointer-events:none;
}
.download-copy {
  position:relative;
  z-index:1;
}
.download-copy .section-kicker {
  color:#8b762e;
  margin-bottom:19px;
}
.download-copy h2 {
  font-size:43px;
  line-height:1.55;
  letter-spacing:-1.5px;
  font-weight:800;
}
.download-underline {
  position:relative;
}
.download-underline::after {
  content:"";
  position:absolute;
  height:3px;
  left:0;
  right:0;
  bottom:-7px;
  background:#514b30;
  transform:rotate(-3deg);
  border-radius:50%;
}
.download-copy>p {
  font-size:12px;
  margin-top:24px;
  color:#867438;
  line-height:1.9;
}
.download-actions {
  display:flex;
  gap:12px;
  margin-top:29px;
  flex-wrap:wrap;
}
.download-actions .button {
  min-height:48px;
  padding:0 17px;
  font-size:12px;
  gap:8px;
  border-radius:11px;
}
.download-actions .icon {
  width:17px;
  height:17px;
}
.download-status {
  font-size:8px;
  font-weight:400;
  opacity:.6;
}
.download-note {
  display:block;
  font-size:9px;
  color:#9d863b;
  line-height:1.8;
  margin-top:20px;
}
.download-doodle {
  position:absolute;
  top:24px;
  left:45%;
  font-size:49px;
  color:#fff6c5;
  transform:rotate(15deg);
}
.download-art {
  position:relative;
  z-index:1;
  align-self:center;
  height:300px;
  margin-left:15px;
}
.paper {
  position:absolute;
  width:230px;
  height:270px;
  top:17px;
  left:13px;
  border-radius:3px;
  background:#fffdf2;
  box-shadow:0 12px 25px #97792f19;
}
.paper-back {
  transform:rotate(13deg);
  background:#f0e7c2;
  left:33px;
  top:19px;
}
.paper-front {
  transform:rotate(-7deg);
  padding:28px 23px;
  display:flex;
  flex-direction:column;
  align-items:center;
}
.paper-small {
  font-size:9px;
  letter-spacing:2px;
  color:#aaa68d;
}
.paper-heart {
  font-size:70px;
  line-height:1.2;
  font-family:Georgia,serif;
  color:#ccb25f;
  transform:rotate(10deg);
  margin:12px 0 9px;
}
/* 下载区域品牌卡：沿用用户的新 Logo，保留卡片内的文字空间。 */
.paper-logo {
  width:64px;
  height:64px;
  object-fit:contain;
  border-radius:16px;
  margin:18px 0 16px;
}
.paper-title {
  font-family:"STKaiti","KaiTi",serif;
  font-size:23px;
  line-height:1.65;
  text-align:center;
  letter-spacing:1px;
}
.paper-signature {
  font-size:8px;
  letter-spacing:1px;
  color:#a7a38b;
  margin-top:15px;
}
.paper-tape {
  position:absolute;
  width:81px;
  height:27px;
  background:#e9c0619c;
  top:9px;
  left:91px;
  transform:rotate(-15deg);
  z-index:2;
  clip-path:polygon(2% 0,99% 3%,96% 96%,0 100%,4% 75%,0 46%);
}
.paper-spark {
  position:absolute;
  bottom:6px;
  right:6px;
  font-size:51px;
  color:#fff8d0;
  transform:rotate(-8deg);
}
.faq-section {
  max-width:860px;
  margin-bottom:64px;
}
.faq-heading {
  margin-bottom:14px;
  font-size:22px;
  line-height:1.6;
  font-weight:700;
}
.inline-link {
  color:var(--ink);
  text-decoration:underline;
  text-decoration-color:#c4a33e;
  text-underline-offset:4px;
}
.inline-link:hover {
  text-decoration-color:currentColor;
}
.faq-section details {
  border-bottom:1px solid var(--line);
}
.faq-section summary {
  list-style:none;
  display:flex;
  justify-content:space-between;
  align-items:center;
  cursor:pointer;
  font-size:12px;
  padding:21px 0;
  font-weight:500;
  gap:15px;
}
.faq-section summary::-webkit-details-marker {
  display:none;
}
.faq-section summary>span {
  font-size:20px;
  font-weight:300;
  color:#969689;
}
.faq-section details[open] summary>span {
  transform:rotate(45deg);
}
.faq-section details>p {
  font-size:12px;
  color:#939287;
  line-height:2;
  padding:0 25px 23px 0;
}
.site-footer {
  border-top:1px solid var(--line);
  padding:26px 0 28px;
}
.footer-main {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:25px;
}
.footer-brand {
  font-size:16px;
  gap:7px;
}
.footer-brand img {
  width:29px;
  height:29px;
}
.footer-brand .brand-dot {
  font-size:19px;
}
.footer-tagline,.footer-top {
  font-size:11px;
  color:var(--muted);
  letter-spacing:.4px;
}
/* 备案栏：独立一行居中展示，链接在鼠标悬停及键盘聚焦时保持可辨识。 */
.footer-legal {
  display:flex;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  gap:2px;
  margin-top:23px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:12px;
  line-height:1.8;
  color:var(--muted);
}
.icp-link {
  display:inline-block;
  padding:5px 0;
  text-underline-offset:4px;
}
.icp-link:hover,.icp-link:focus-visible {
  color:var(--ink);
  text-decoration:underline;
}
.mobile-cta {
  display:none;
}
/* 截图弹层：保留原图，支持键盘及前后切换；提示条只显示已发生的操作结果。 */
.lightbox {
  padding:0;
  border:1px solid #ffffff80;
  background:#f7f6f0;
  border-radius:18px;
  width:min(480px,calc(100vw - 28px));
  max-height:92dvh;
  color:var(--ink);
  box-shadow:0 30px 100px #0005;
  overflow:hidden;
}
.lightbox::backdrop {
  background:#20231ccc;
  backdrop-filter:blur(6px);
}
.lightbox-toolbar {
  padding:16px 20px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  border-bottom:1px solid var(--line);
  background:#fffdf8;
}
.lightbox-eyebrow {
  font-size:8px;
  letter-spacing:1.5px;
  color:#a09d8e;
}
.lightbox h2 {
  font-size:15px;
  margin-top:4px;
}
.icon-button {
  border:1px solid #e8e5da;
  border-radius:50%;
  width:34px;
  height:34px;
  background:transparent;
  display:grid;
  place-items:center;
}
.icon-button .icon {
  width:17px;
  height:17px;
}
.lightbox-body {
  overflow:auto;
  max-height:calc(92dvh - 145px);
  overscroll-behavior:contain;
  background:#eeede8;
}
.lightbox-body img {
  width:100%;
  height:auto;
}
.lightbox-bottom {
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 18px;
  border-top:1px solid var(--line);
  background:#fffdf8;
  font-size:11px;
}
.lightbox-bottom button {
  font-size:11px;
  background:transparent;
  border:0;
  padding:3px 0;
}
.lightbox-bottom>span {
  font-size:10px;
  color:#a09c8c;
}
.toast {
  position:fixed;
  z-index:50;
  bottom:35px;
  left:50%;
  transform:translateX(-50%);
  background:#33362e;
  color:#fff9df;
  padding:15px 23px;
  border-radius:12px;
  box-shadow:0 9px 30px #0002;
  width:max-content;
  max-width:calc(100% - 32px);
  font-size:12px;
  line-height:1.8;
  text-align:center;
}
.dialog-open {
  overflow:hidden;
}
/* 平板布局：保持文案与展示图的阅读次序，收紧装饰范围。 */
@media(min-width:1440px) {
  .hero-grid {
    min-height:690px;
  }
  .hero {
    padding-top:65px;
  }
  .hero h1 {
    font-size:78px;
  }
  .hero-visual {
    transform:scale(1.04);
    transform-origin:left center;
  }
  .hero-copy {
    padding-bottom:48px;
  }
}
@media(max-width:1150px) {
  .container {
    width:calc(100% - 64px);
  }
  .hero h1 {
    font-size:61px;
  }
  .hero-grid {
    grid-template-columns:1fr 1fr;
    min-height:600px;
  }
  .hero-visual {
    height:600px;
    transform:scale(.87);
    transform-origin:left center;
    margin-right:-70px;
  }
  .hero-actions {
    gap:20px;
  }
  .hero-actions .button {
    padding-inline:21px;
    font-size:13px;
  }
  .text-button {
    font-size:11px;
  }
  .feature {
    padding:24px 21px;
  }
  .tiny-book {
    width:60px;
    font-size:10px;
  }
  .experience-grid {
    gap:60px;
  }
  .screens-layout {
    gap:60px;
  }
  .download-panel {
    padding:55px 45px;
  }
  .download-copy h2 {
    font-size:38px;
  }
  .download-art {
    transform:scale(.9);
    transform-origin:left center;
  }
  .gallery-tip {
    display:none;
  }
}
@media(max-width:900px) {
  .desktop-nav {
    gap:23px;
  }
  .hero h1 {
    font-size:51px;
    letter-spacing:-2.5px;
  }
  .hero-description {
    font-size:13px;
  }
  .hero-grid {
    min-height:535px;
  }
  .hero-visual {
    height:590px;
    transform:scale(.73);
    margin-right:-150px;
    margin-left:-15px;
  }
  .hero-copy {
    padding-bottom:35px;
  }
  .eyebrow {
    font-size:10px;
  }
  .hero-actions {
    align-items:flex-start;
    flex-direction:column;
    gap:24px;
  }
  .hero-footnote {
    margin-top:25px;
  }
  .story-ribbon>div {
    justify-content:flex-start;
    gap:30px;
  }
  .section-space {
    padding:75px 0;
  }
  .section-heading h2 {
    font-size:29px;
  }
  .section-heading>p {
    font-size:11px;
  }
  .feature-grid {
    gap:15px;
  }
  .feature {
    padding:23px 17px;
  }
  .feature-number {
    font-size:7px;
    letter-spacing:1px;
  }
  .feature h3 {
    font-size:18px;
  }
  .feature>p {
    font-size:10px;
  }
  .feature-illustration,.scene-illustration,.shelf-illustration {
    height:160px;
  }
  .choice-illustration {
    padding:6px 0;
  }
  .mini-option {
    font-size:9px;
    padding:11px;
  }
  .mini-dialog {
    font-size:10px;
  }
  .tiny-book {
    width:46px;
    height:95px;
    font-size:8px;
    padding:10px 5px;
  }
  .tiny-book span {
    font-size:18px;
  }
  .shelf-sticker {
    font-size:7px;
    white-space:nowrap;
    padding:5px 8px;
  }
  .shelf-line {
    bottom:28px;
  }
  .scene-illustration img {
    top:-45%;
  }
  .experience-grid {
    gap:40px;
    grid-template-columns:.8fr 1.2fr;
  }
  .experience h2 {
    font-size:32px;
  }
  .experience-copy>p {
    font-size:11px;
  }
  .experience-hint {
    font-size:9px;
    gap:7px;
  }
  .demo-disclaimer {
    font-size:8px;
    line-height:1.8;
  }
  .story-demo {
    min-height:390px;
  }
  .demo-content {
    padding:50px 23px 25px;
  }
  .demo-text {
    font-size:12px;
  }
  .demo-options button {
    font-size:10px;
  }
  .screens-layout {
    gap:35px;
  }
  .screen-tab {
    gap:13px;
    padding:20px 17px;
  }
  .screen-tab strong {
    font-size:14px;
  }
  .screen-tab small {
    font-size:9px;
  }
  .screen-stage {
    min-height:560px;
  }
  .showcase-phone {
    width:225px;
  }
  .stage-circle {
    width:310px;
    height:310px;
  }
  .stage-star {
    left:0;
    font-size:40px;
  }
  .stage-heart {
    font-size:58px;
    right:-8px;
  }
  .gallery-strip {
    font-size:10px;
    gap:20px;
  }
  .download-panel {
    padding:45px 35px;
    gap:5px;
  }
  .download-copy h2 {
    font-size:32px;
  }
  .download-copy>p {
    font-size:11px;
  }
  .download-art {
    transform:scale(.75);
    margin-left:0;
    margin-right:-70px;
  }
  .download-actions .button {
    font-size:10px;
    padding-inline:13px;
    gap:6px;
  }
  .download-status {
    font-size:7px;
  }
}
/* 手机布局：首屏单列、横向截图标签、触控友好的按钮及底部快捷入口。 */
@media(max-width:650px) {
  html {
    scroll-padding-top:24px;
  }
  .container {
    width:calc(100% - 40px);
  }
  .header-inner {
    height:76px;
    gap:12px;
  }
  .brand {
    font-size:20px;
    gap:8px;
  }
  .brand img {
    width:35px;
    height:35px;
  }
  .desktop-nav {
    display:none;
  }
  .button-small {
    font-size:10px;
    min-height:37px;
    padding-inline:13px;
    gap:8px;
    border-radius:10px;
  }
  .button-small .icon {
    width:14px;
    height:14px;
  }
  .hero {
    padding:37px 0 0;
  }
  .hero-grid {
    grid-template-columns:1fr;
    min-height:0;
  }
  .hero-copy {
    padding:0;
    z-index:4;
  }
  .eyebrow {
    font-size:10px;
    gap:7px;
    margin-bottom:20px;
  }
  .little-spark {
    font-size:18px;
  }
  .hero h1 {
    font-size:53px;
    line-height:1.35;
    letter-spacing:-2.5px;
  }
  .hero h1 br {
    display:none;
  }
  .hero h1 {
    max-width:360px;
  }
  .title-period {
    margin-left:0;
  }
  .hero-description {
    font-size:12px;
    line-height:1.95;
    margin-top:22px;
  }
  .hero-description>br:first-child {
    display:none;
  }
  .mobile-break {
    display:block;
  }
  .hero-actions {
    margin-top:27px;
    flex-direction:row;
    align-items:center;
    gap:22px;
  }
  .hero-actions .button {
    min-height:47px;
    font-size:11px;
    padding-inline:17px;
    gap:10px;
    border-radius:12px;
  }
  .hero-actions .icon {
    width:18px;
    height:18px;
  }
  .text-button {
    font-size:10px;
    gap:7px;
  }
  .play-circle {
    width:26px;
    height:26px;
  }
  .play-circle .icon {
    width:10px;
    height:10px;
  }
  .hero-footnote {
    margin-top:21px;
    font-size:9px;
    gap:6px;
  }
  .mini-heart {
    font-size:17px;
  }
  .hero-visual {
    height:468px;
    width:355px;
    max-width:100%;
    margin:7px auto 0;
    transform:none;
    transform-origin:center;
    z-index:1;
  }
  .phone {
    border-width:4px;
    border-radius:27px;
    padding:12px 4px 5px;
  }
  .phone-camera {
    height:5px;
    top:5px;
    width:38px;
  }
  .screen-viewport {
    border-radius:18px;
  }
  .phone-home {
    width:170px;
    left:5px;
    top:60px;
    border-radius:26px;
  }
  .phone-reader {
    width:180px;
    left:166px;
    top:25px;
    border-radius:26px;
  }
  .orbit-one {
    width:335px;
    height:335px;
    top:43px;
    left:7px;
  }
  .orbit-two {
    width:405px;
    height:405px;
    top:8px;
    left:-28px;
  }
  .floating-note {
    padding:9px 11px;
    gap:8px;
    font-size:9px;
    border-radius:11px;
  }
  .floating-note div>span {
    font-size:8px;
  }
  .note-icon {
    width:26px;
    height:26px;
    border-radius:8px;
    font-size:23px;
  }
  .yellow-icon .icon {
    width:17px;
    height:17px;
  }
  .note-top {
    right:-3px;
    top:68px;
  }
  .note-bottom {
    left:1px;
    bottom:57px;
    padding-right:27px;
  }
  .note-cursor {
    font-size:30px;
    right:-8px;
    bottom:-27px;
  }
  .doodle-star {
    font-size:36px;
    top:10px;
    left:33px;
  }
  .doodle-heart {
    right:-9px;
    bottom:75px;
    font-size:53px;
  }
  .visual-caption {
    font-size:6px;
    left:77px;
    bottom:16px;
    letter-spacing:1.5px;
  }
  .hero-glow {
    inset:250px -200px 0 -200px;
    background:radial-gradient(ellipse at 67% 43%,#e9e5f4aa,transparent 53%),radial-gradient(ellipse at 30% 63%,#f4edc1bb,transparent 45%);
  }
  .hero-bottom {
    padding:20px 0;
    font-size:8px;
    letter-spacing:.5px;
  }
  .hero-bottom a {
    gap:12px;
  }
  .hero-bottom a span {
    font-size:15px;
  }
  .story-ribbon>div {
    font-size:10px;
    gap:27px;
    padding:15px 20px;
  }
  .story-ribbon i {
    font-size:14px;
  }
  .section-space {
    padding:59px 0;
  }
  .section-kicker {
    font-size:8px;
    letter-spacing:1.7px;
    margin-bottom:13px;
  }
  .section-heading {
    margin-bottom:29px;
    align-items:start;
    gap:13px;
    flex-direction:column;
  }
  .section-heading h2 {
    font-size:27px;
    letter-spacing:-1px;
  }
  .section-heading>p {
    font-size:10px;
    line-height:1.8;
  }
  .section-heading>p br {
    display:none;
  }
  .feature-grid {
    grid-template-columns:1fr;
    gap:17px;
  }
  .feature {
    padding:22px 24px;
    display:grid;
    grid-template-columns:1fr 1.1fr;
    grid-template-rows:20px auto auto;
    column-gap:22px;
    border-radius:19px;
  }
  .feature-number {
    grid-column:1/3;
    font-size:7px;
    letter-spacing:1.2px;
  }
  .feature-illustration,.scene-illustration,.shelf-illustration {
    grid-column:2;
    grid-row:2/4;
    height:137px;
    margin-top:8px;
    align-self:center;
  }
  .feature h3 {
    grid-column:1;
    grid-row:2;
    font-size:19px;
    margin-top:25px;
    margin-bottom:9px;
    align-self:end;
  }
  .feature>p {
    grid-column:1;
    grid-row:3;
    font-size:10px;
    line-height:1.85;
    align-self:start;
    padding-bottom:10px;
  }
  .feature>p br {
    display:none;
  }
  .choice-illustration {
    padding-top:8px;
  }
  .mini-dialog {
    font-size:8px;
    margin-bottom:10px;
    white-space:nowrap;
  }
  .mini-option {
    font-size:7px;
    padding:9px 8px;
    gap:5px;
  }
  .option-muted {
    margin-top:10px;
  }
  .illustration-cursor {
    font-size:30px;
    top:52px;
    right:-8px;
  }
  .scene-illustration {
    height:138px;
  }
  .scene-illustration img {
    top:-35%;
  }
  .scene-subtitle {
    font-size:6px;
    left:8px;
    bottom:12px;
    letter-spacing:.4px;
  }
  .scene-star {
    font-size:26px;
    right:8px;
    top:5px;
  }
  .shelf-illustration {
    gap:3px;
    padding-bottom:15px;
  }
  .tiny-book {
    width:40px;
    height:86px;
    font-size:7px;
    padding:9px 4px;
    border-left-width:2px;
  }
  .tiny-book span {
    font-size:15px;
    bottom:8px;
    right:7px;
  }
  .shelf-line {
    bottom:23px;
    left:-5px;
    right:-5px;
    height:6px;
    box-shadow:0 4px 0 #e0e6d8;
  }
  .shelf-sticker {
    font-size:6px;
    bottom:0;
    padding:5px;
  }
  .experience {
    padding-top:9px;
    padding-bottom:59px;
  }
  .experience-grid {
    grid-template-columns:1fr;
    gap:29px;
  }
  .experience h2 {
    font-size:30px;
    line-height:1.5;
    letter-spacing:-1px;
  }
  .experience h2 br {
    display:none;
  }
  .experience-copy>p {
    font-size:11px;
    margin-top:16px;
  }
  .experience-hint {
    font-size:9px;
    margin-top:18px;
  }
  .experience-hint>span {
    font-size:0;
  }
  .experience-hint>span::after {
    content:"点击下方选项，试着改变故事走向";
    font-size:9px;
  }
  .demo-disclaimer {
    margin-top:10px;
    font-size:7px;
  }
  .story-demo {
    min-height:370px;
    border-radius:19px;
  }
  .demo-topline {
    padding:20px 21px;
    font-size:8px;
  }
  .demo-content {
    padding:61px 22px 24px;
  }
  .demo-text {
    font-size:12px;
    min-height:59px;
  }
  .speaker {
    font-size:9px;
  }
  .demo-options {
    margin-top:20px;
    gap:10px;
  }
  .demo-options button {
    font-size:9px;
    padding:12px 13px;
  }
  .demo-ending {
    font-size:9px;
  }
  .demo-restart {
    font-size:9px;
  }
  .screens-layout {
    grid-template-columns:1fr;
    gap:20px;
  }
  .screen-menu {
    flex-direction:row;
    gap:9px;
    overflow-x:auto;
    padding:2px 2px 10px;
    margin-inline:-2px;
    scrollbar-width:thin;
    scrollbar-color:#d9d3bc transparent;
  }
  .screen-tab {
    flex-shrink:0;
    padding:11px 13px;
    gap:0;
    min-height:45px;
    border:1px solid #e4e1d5;
    border-radius:10px;
    background:#faf8f0;
  }
  .screen-tab.active {
    background:#ffe181;
    border-color:#e8ce71;
  }
  .screen-tab strong {
    font-size:10px;
    font-weight:500;
    white-space:nowrap;
  }
  .screen-tab small,.tab-index,.screen-tab>.icon {
    display:none;
  }
  .screen-stage {
    min-height:530px;
    padding-bottom:30px;
  }
  .showcase-phone {
    width:225px;
    transform:rotate(3deg);
  }
  .stage-circle {
    width:310px;
    height:310px;
    top:70px;
  }
  .stage-star {
    font-size:38px;
    left:12px;
    top:30px;
  }
  .stage-heart {
    right:1px;
    bottom:108px;
    font-size:52px;
  }
  .stage-label {
    font-size:10px;
    bottom:0;
  }
  .stage-label small {
    font-size:8px;
  }
  .gallery-strip {
    margin-top:32px;
    flex-direction:column;
    align-items:flex-start;
    gap:15px;
    padding-top:22px;
    font-size:10px;
  }
  .gallery-strip>div {
    gap:9px;
    flex-wrap:wrap;
  }
  .gallery-link {
    font-size:9px;
    padding:9px 13px;
  }
  .gallery-link span {
    margin-left:10px;
  }
  .download-section {
    padding:55px 0 35px;
  }
  .download-panel {
    width:calc(100% - 28px);
    grid-template-columns:1fr;
    padding:35px 25px 32px;
    border-radius:22px;
    gap:26px;
  }
  .download-copy h2 {
    font-size:33px;
    line-height:1.5;
    letter-spacing:-1px;
  }
  .download-copy>p {
    font-size:10px;
    margin-top:20px;
  }
  .download-actions {
    gap:9px;
    margin-top:24px;
  }
  .download-actions .button {
    font-size:10px;
    min-height:46px;
    padding-inline:12px;
    gap:7px;
  }
  .download-status {
    font-size:7px;
  }
  .download-note {
    font-size:8px;
    margin-top:16px;
  }
  .download-doodle {
    top:35px;
    left:auto;
    right:27px;
    font-size:40px;
  }
  .download-art {
    height:227px;
    transform:scale(.76);
    transform-origin:center top;
    margin:0 auto -45px;
    width:290px;
  }
  .paper {
    left:13px;
  }
  .paper-back {
    left:33px;
  }
  .paper-spark {
    right:8px;
    bottom:-31px;
  }
  .faq-section {
    margin-bottom:32px;
  }
  .faq-section summary {
    font-size:10px;
    padding-block:18px;
  }
  .faq-section details>p {
    font-size:10px;
  }
  .site-footer {
    padding:24px 0 99px;
  }
  .footer-main {
    flex-wrap:wrap;
    gap:16px 30px;
  }
  .footer-brand {
    font-size:16px;
  }
  .footer-brand img {
    width:29px;
    height:29px;
  }
  .footer-tagline {
    font-size:11px;
    margin-left:auto;
  }
  .footer-top {
    font-size:11px;
    width:100%;
    text-align:right;
  }
  .footer-legal {
    margin-top:18px;
    padding-top:15px;
    font-size:12px;
  }
  .icp-link {
    padding-block:10px;
  }
  .mobile-cta {
    display:flex;
    position:fixed;
    z-index:9;
    bottom:max(17px,env(safe-area-inset-bottom));
    left:20px;
    right:20px;
    min-height:47px;
    font-size:12px;
    box-shadow:0 4px 0 #e6bf43,0 7px 24px #61532b24;
    border-radius:12px;
    transform:translateY(110px);
    visibility:hidden;
    transition:transform .25s,visibility .25s;
  }
  .mobile-cta.is-visible {
    transform:translateY(0);
    visibility:visible;
  }
  .mobile-cta:hover {
    transform:translateY(-2px);
  }
  .toast {
    bottom:83px;
    font-size:11px;
    padding:13px 17px;
  }
  .lightbox-toolbar {
    padding:13px 16px;
  }
  .lightbox h2 {
    font-size:13px;
  }
  .lightbox-bottom {
    padding:13px 16px;
  }
}
@media(max-width:370px) {
  .container {
    width:calc(100% - 32px);
  }
  .hero h1 {
    font-size:47px;
  }
  .hero-actions {
    gap:15px;
  }
  .text-button {
    font-size:9px;
  }
  .hero-visual {
    width:320px;
    height:440px;
  }
  .phone-home {
    width:158px;
    left:0;
    top:60px;
  }
  .phone-reader {
    width:164px;
    left:154px;
    top:28px;
  }
  .note-top {
    right:-2px;
    top:69px;
  }
  .note-bottom {
    bottom:56px;
  }
  .orbit-one {
    width:305px;
    height:305px;
  }
  .orbit-two {
    width:375px;
    height:375px;
  }
  .doodle-heart {
    right:-4px;
    bottom:70px;
  }
  .visual-caption {
    left:61px;
  }
  .feature {
    padding-inline:19px;
    column-gap:15px;
  }
  .feature h3 {
    font-size:17px;
  }
  .tiny-book {
    width:36px;
  }
  .download-panel {
    padding-inline:21px;
  }
  .download-actions .button {
    font-size:9px;
    padding-inline:10px;
  }
  .download-status {
    font-size:6px;
  }
}
/* 手机可读性：正文与剧情选项保留足够字号，小字号仅用于装饰性编号。 */
@media(max-width:650px) {
  .hero-description {
    font-size:14px;
  }
  .hero-actions .button,.text-button {
    font-size:12px;
  }
  .hero-actions {
    gap:16px;
  }
  .hero-footnote,.eyebrow {
    font-size:11px;
  }
  .section-heading>p,.feature>p,.experience-copy>p {
    font-size:12px;
  }
  .experience-hint>span::after {
    font-size:11px;
  }
  .demo-disclaimer {
    font-size:10px;
  }
  .demo-text {
    font-size:14px;
  }
  .demo-options button,.demo-ending,.demo-restart {
    font-size:12px;
  }
  .demo-ending {
    flex-wrap:wrap;
  }
  .demo-topline,.speaker {
    font-size:10px;
  }
  .screen-tab strong {
    font-size:12px;
  }
  .stage-label,.gallery-strip {
    font-size:12px;
  }
  .gallery-link,.download-copy>p,.download-note {
    font-size:11px;
  }
  .download-actions .button {
    font-size:12px;
  }
  .download-status {
    font-size:9px;
  }
  .faq-section summary,.faq-section details>p {
    font-size:12px;
  }
}
/* 手机端产品说明：延续当前字号比例，保证问答与简介可直接阅读。 */
@media(max-width:650px) {
  .hero-product-name {
    margin-bottom:12px;
    font-size:12px;
    letter-spacing:.5px;
  }
  .product-summary {
    margin:-9px 0 24px;
    font-size:12px;
  }
  .faq-heading {
    font-size:19px;
  }
}
/* 减少动态偏好：禁用平滑滚动及装饰位移，保证阅读舒适度。 */
@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto;
  }
  *,*::before,*::after {
    transition:none!important;
    animation:none!important;
  }
  .button:hover,.showcase-phone:hover,.demo-options button:hover {
    transform:none;
  }
}