:root {
  --page: #fff8fa;
  --surface: #ffffff;
  --surface-soft: #fff1f5;
  --ink: #302a30;
  --muted: #746c72;
  --pink: #df6e92;
  --pink-hover: #a83e60;
  --pink-deep: #b94f70;
  --pink-wash: #f9e3ea;
  --line: #ecdde2;
  --max: 1120px;
}
.icon { width: 1em; height: 1em; display: block; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 0; margin: 0; background: var(--surface-soft); color: var(--ink); font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif; line-height: 1.65; letter-spacing: 0; }
button { font: inherit; }
img { max-width: 100%; }
.site-header { width: 100%; height: 76px; margin: 0 auto; padding-right: max(20px, calc((100% - var(--max)) / 2)); padding-left: max(20px, calc((100% - var(--max)) / 2)); display: flex; align-items: center; justify-content: space-between; position: sticky; z-index: 100; top: 0; border-bottom: 1px solid rgba(223, 110, 146, 0.12); background: var(--page); box-shadow: 0 6px 18px rgba(83, 56, 66, 0.06); }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); text-decoration: none; font-weight: 800; }
.brand img { width: 40px; height: 40px; object-fit: contain; }
.brand span { color: var(--pink); font-size: 19px; }
.download-button { min-height: 48px; padding: 0 21px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 7px; background: var(--pink-deep); color: #fff; box-shadow: 0 10px 22px rgba(185, 79, 112, 0.2); cursor: pointer; font-weight: 800; text-decoration: none; transition: background 160ms ease, transform 160ms ease; }
.download-button:hover { background: var(--pink-hover); transform: translateY(-2px); }
.download-button:focus-visible { outline: 3px solid #f2a9bf; outline-offset: 3px; }
.download-button--small { min-height: 44px; padding: 0 15px; font-size: 15px; }
.section-shell { padding-right: max(20px, calc((100% - var(--max)) / 2)); padding-left: max(20px, calc((100% - var(--max)) / 2)); }
.hero h1, .section-intro h2, .final-cta h2 { margin: 0; font-weight: 900; line-height: 1.2; }
.hero { min-height: 34rem; padding-top: 92px; padding-bottom: 96px; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; isolation: isolate; background-color: var(--surface-soft); }
.hero::before { content: ""; position: absolute; z-index: -2; inset: -70px; background-image: url("../images/logo.webp"); background-repeat: repeat; background-size: 112px 109px; opacity: 0.045; transform: rotate(-6deg) scale(1.08); }
.hero-copy { width: min(100%, 760px); position: relative; z-index: 2; text-align: center; }
.hero h1 { font-family: "STXingkai", "华文行楷", "FZKai-Z03", "Kaiti SC", "KaiTi", serif; font-size: 82px; font-weight: 700; }
.hero-tagline { margin: 12px 0 0; color: var(--ink); font-size: 21px; font-weight: 800; }
.hero-summary { max-width: 650px; margin: 18px auto 28px; color: var(--muted); font-size: 18px; }
.hero-action { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 12px; }
.hero-action .download-button:first-child { min-height: 56px; padding: 0 29px; font-size: 18px; }
.sakura-fall { position: absolute; z-index: 1; inset: 0; overflow: hidden; pointer-events: none; }
.sakura { width: var(--sakura-size); height: auto; position: absolute; top: -16%; left: var(--sakura-left); opacity: var(--sakura-opacity); animation: sakura-fall var(--sakura-duration) linear infinite; animation-delay: var(--sakura-delay); }
.sakura--1 { --sakura-size: 18px; --sakura-left: 5%; --sakura-opacity: 0.28; --sakura-duration: 13s; --sakura-delay: -8s; }
.sakura--2 { --sakura-size: 28px; --sakura-left: 15%; --sakura-opacity: 0.18; --sakura-duration: 16s; --sakura-delay: -2s; }
.sakura--3 { --sakura-size: 15px; --sakura-left: 28%; --sakura-opacity: 0.3; --sakura-duration: 12s; --sakura-delay: -6s; }
.sakura--4 { --sakura-size: 22px; --sakura-left: 41%; --sakura-opacity: 0.2; --sakura-duration: 15s; --sakura-delay: -11s; }
.sakura--5 { --sakura-size: 17px; --sakura-left: 56%; --sakura-opacity: 0.27; --sakura-duration: 14s; --sakura-delay: -4s; }
.sakura--6 { --sakura-size: 26px; --sakura-left: 68%; --sakura-opacity: 0.17; --sakura-duration: 17s; --sakura-delay: -13s; }
.sakura--7 { --sakura-size: 14px; --sakura-left: 79%; --sakura-opacity: 0.32; --sakura-duration: 11s; --sakura-delay: -7s; }
.sakura--8 { --sakura-size: 20px; --sakura-left: 89%; --sakura-opacity: 0.22; --sakura-duration: 14s; --sakura-delay: -1s; }
.sakura--9 { --sakura-size: 16px; --sakura-left: 96%; --sakura-opacity: 0.25; --sakura-duration: 12s; --sakura-delay: -9s; }
@keyframes sakura-fall {
  0% { transform: translate3d(0, -80px, 0) rotate(0deg); }
  45% { transform: translate3d(34px, 360px, 0) rotate(170deg); }
  100% { transform: translate3d(-24px, 780px, 0) rotate(360deg); }
}
.popular, .benefits, .use-cases, .faq, .final-cta { padding-top: 88px; padding-bottom: 88px; }
.popular { background: var(--surface); }
.popular .section-intro h2 { font-size: 46px; }
.section-intro { max-width: 540px; }
.section-intro h2 { font-size: 40px; }
.section-intro > p, .final-cta p { color: var(--muted); }
.section-intro--row { max-width: none; }
.section-intro--center { margin: 0 auto 42px; text-align: center; }
.section-intro--center > p { margin: 14px 0 0; }
.popular-heading { margin-bottom: 36px; display: flex; align-items: end; justify-content: space-between; gap: 36px; }
.popular .section-intro--row { margin: 0; display: block; }
.popular .section-intro--row > p { max-width: none; margin: 12px 0 0; color: #9c7683; font-size: 17px; font-weight: 700; }
.popular-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 14px; }
.popular-grid article { min-width: 0; }
.popular-poster { aspect-ratio: 5 / 7; position: relative; overflow: hidden; border-radius: 7px; background: #ebe7e9; box-shadow: 0 8px 22px rgba(68, 51, 57, 0.08); }
.popular-poster img { width: 100%; height: 100%; display: block; object-fit: cover; transition: transform 220ms ease; }
.popular-grid article:hover .popular-poster img { transform: scale(1.03); }
.popular-grid h3 { margin: 10px 0 0; display: -webkit-box; min-height: 3.1em; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; color: #4d474b; font-size: 15px; font-weight: 600; line-height: 1.55; text-align: center; text-overflow: ellipsis; overflow-wrap: anywhere; }
.benefits { padding-bottom: 0; background: var(--page); scroll-margin-top: 76px; }
.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.benefit-card { padding: 30px 28px; border: 1px solid var(--line); border-radius: 8px; background: transparent; }
.benefit-card h3 { margin: 0 0 14px; font-size: 21px; }
.benefit-card p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.use-cases { padding-top: 56px; background: var(--page); }
.feature-showcase { margin-top: 76px; padding: 32px 34px 46px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: center; gap: 10px; }
.feature-preview { min-width: 0; position: relative; z-index: 1; }
.feature-preview:nth-child(2) { z-index: 2; }
.app-preview { height: 28.5rem; aspect-ratio: auto; min-height: 0; overflow: visible; border: 1px solid rgba(199, 170, 181, 0.56); border-radius: 12px; background: var(--surface); box-shadow: 0 28px 58px rgba(88, 55, 68, 0.17), 0 8px 20px rgba(88, 55, 68, 0.09); transform-origin: 50% 72%; }
.feature-preview:nth-child(1) .app-preview { transform: translateY(22px) rotate(-4deg); }
.feature-preview:nth-child(2) .app-preview { transform: translateY(-8px) rotate(0.8deg) scale(1.025); }
.feature-preview:nth-child(3) .app-preview { transform: translateY(22px) rotate(4deg); }
.app-preview__body { height: 100%; min-height: 0; padding: 22px; overflow: hidden; border-radius: inherit; background: linear-gradient(180deg, #fff 0%, #fffafb 100%); }
.app-category-heading { margin-bottom: 12px; display: flex; align-items: center; justify-content: space-between; }
.app-category-heading strong { color: var(--pink); font-size: 22px; line-height: 1.2; }
.app-category-heading span { color: #a0969b; font-size: 12px; }
.app-filter-group { margin-top: 10px; }
.app-filter-group > strong { display: block; color: #62585d; font-size: 12px; line-height: 1.2; }
.app-filter-group ul { margin: 5px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 11px; overflow: hidden; list-style: none; }
.app-filter-group li { padding: 2px 0; color: #857b80; font-size: 12px; line-height: 1.4; }
.app-filter-group li.is-active { color: var(--pink); font-weight: 800; }
.app-cover-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 9px 8px; }
.app-cover-grid figure { margin: 0; min-width: 0; }
.app-cover-grid img { width: 100%; height: auto; aspect-ratio: 5 / 7; display: block; border-radius: 5px; object-fit: cover; }
.app-cover-grid figcaption { margin-top: 5px; overflow: hidden; color: #554d51; font-size: 11px; line-height: 1.4; text-overflow: ellipsis; white-space: nowrap; }
.app-preview__caption { margin: 13px 0 7px; color: #8c8186; font-size: 12px; font-weight: 700; }
.app-week { margin-bottom: 8px; padding: 4px; display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 2px; border-radius: 7px; background: #f3f1f2; }
.app-week span { min-width: 0; padding: 4px 0; border-radius: 5px; color: #91878c; font-size: 12px; text-align: center; }
.app-week .is-active { background: var(--surface); color: var(--pink); box-shadow: 0 2px 8px rgba(86, 64, 72, 0.08); font-weight: 800; }
.app-download-item { padding: 9px 0; display: grid; align-items: center; gap: 10px; border-bottom: 1px solid #f1e8eb; }
.app-update-heading { margin-bottom: 16px; display: flex; align-items: baseline; justify-content: space-between; }
.app-update-heading strong { color: var(--pink); font-size: 20px; }
.app-update-heading span { color: #9b9196; font-size: 12px; }
.app-update-list { margin: 0; padding: 0; list-style: none; }
.app-update-list li { min-height: 52px; display: grid; grid-template-columns: 24px minmax(0, 1fr) auto; align-items: center; gap: 7px; border-bottom: 1px solid #ece5e8; }
.app-download-list img { width: 42px; height: 54px; display: block; border-radius: 4px; object-fit: cover; }
.app-update-list strong, .app-download-list strong, .app-download-list span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.app-download-list strong { font-size: 13px; }
.app-download-list span { margin-top: 2px; color: #92878c; font-size: 12px; }
.app-update-list b { color: var(--pink); font-size: 11px; font-weight: 700; white-space: nowrap; }
.app-update-list strong { overflow: hidden; font-size: 13px; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.app-update-number { color: #a49ba0; font-size: 12px; white-space: nowrap; }
.app-download-summary { padding: 16px; border-radius: 7px; background: var(--surface-soft); }
.app-download-summary span, .app-download-summary strong { display: block; }
.app-download-summary span { color: var(--pink-deep); font-size: 12px; font-weight: 800; }
.app-download-summary strong { margin-top: 3px; font-size: 18px; }
.app-download-item { min-height: 68px; grid-template-columns: 42px minmax(0, 1fr) auto; gap: 8px; }
.app-download-list progress { width: 100%; height: 4px; margin-top: 7px; display: block; overflow: hidden; border: 0; border-radius: 99px; background: #f0e4e8; accent-color: var(--pink); }
.app-download-list progress::-webkit-progress-bar { background: #f0e4e8; }
.app-download-list progress::-webkit-progress-value { background: var(--pink); }
.app-download-list .app-read-button { min-width: 54px; padding: 6px 8px; border-radius: 999px; background: var(--pink-deep); color: #fff; font-size: 12px; font-weight: 700; line-height: 1; text-align: center; white-space: nowrap; }
.app-reasons__heading { margin-bottom: 32px; }
.app-reasons__heading h2 { margin: 0; font-size: 32px; line-height: 1.3; text-align: center; }
.app-reason-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.app-reason-grid article { padding: 28px; display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: start; gap: 18px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.app-reason-grid article > .icon { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 7px; background: var(--pink-wash); color: var(--pink-deep); padding: 7px; }
.app-reason-grid h3 { margin: 0 0 7px; font-size: 19px; }
.app-reason-grid p { margin: 0; color: var(--muted); font-size: 16px; }
.final-cta h2 { font-size: 45px; }
.faq { display: block; background: var(--surface); }
.faq .section-intro { max-width: none; margin: 0 auto 38px; text-align: center; }
.faq-list { width: min(100%, 840px); margin: 0 auto; overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: transparent; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:last-child { border-bottom: 0; }
.faq summary { padding: 22px 24px; display: flex; align-items: center; justify-content: space-between; gap: 20px; cursor: pointer; list-style: none; font-size: 16px; font-weight: 800; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .icon { color: var(--pink-deep); font-size: 15px; transition: transform 160ms ease; }
.faq details[open] summary .icon { transform: rotate(180deg); }
.faq details p { margin: -5px 64px 22px 24px; color: var(--muted); }
.final-cta { scroll-margin-top: 96px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 30px; background: var(--pink-wash); text-align: center; }
.final-cta > div { max-width: 760px; }
.final-cta h2 { max-width: 700px; margin-right: auto; margin-left: auto; }
.final-cta p { margin: 14px 0 0; }
.final-cta .download-button { min-height: 60px; padding: 0 34px; gap: 10px; font-size: 17px; }
.site-footer { min-height: 112px; padding: 28px max(20px, calc((100% - var(--max)) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 40px; border-top: 1px solid var(--line); background: var(--surface); }
.site-footer p { margin: 0; color: var(--muted); font-size: 13px; }
.site-footer p:first-child { flex: 0 0 auto; color: var(--ink); font-weight: 700; }
.site-footer p:last-child { max-width: 620px; text-align: right; }
@media (max-width: 900px) {
  .popular-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); row-gap: 24px; }
  .benefit-grid { grid-template-columns: 1fr; }
  .feature-showcase { width: calc(100% + 20px); margin-top: 58px; padding: 24px 24px 36px; display: flex; align-items: center; gap: 12px; overflow-x: auto; overflow-y: hidden; scroll-padding-right: 20px; scroll-snap-type: x proximity; scrollbar-width: none; }
  .feature-showcase::-webkit-scrollbar { display: none; }
  .feature-preview { width: 320px; flex: 0 0 320px; scroll-snap-align: start; }
  .feature-preview:nth-child(1) .app-preview { transform: translateY(6px) rotate(-1deg); }
  .feature-preview:nth-child(2) .app-preview { transform: rotate(0.5deg); }
  .feature-preview:nth-child(3) .app-preview { transform: translateY(6px) rotate(1deg); }
  .app-preview { box-shadow: 0 8px 16px rgba(88, 55, 68, 0.1), 0 2px 5px rgba(88, 55, 68, 0.06); }
}
@media (max-width: 700px) {
  .site-header { width: 100%; height: 67px; padding-right: 16px; padding-left: 16px; }
  .brand img { width: 32px; height: 32px; }
  .download-button--small { min-height: 40px; padding: 0 14px; font-size: 14px; }
  .section-shell { padding-right: 20px; padding-left: 20px; }
  .hero { min-height: 30rem; padding-top: 68px; padding-bottom: 72px; }
  .hero h1 { font-size: 56px; }
  .hero-tagline { font-size: 18px; }
  .hero-summary { margin-top: 18px; margin-bottom: 24px; font-size: 16px; }
  .hero-action { width: 100%; flex-direction: column; gap: 10px; }
  .hero-action .download-button:first-child { width: 100%; min-height: 54px; padding: 0 24px; font-size: 17px; }
  .hero::before { background-size: 82px 80px; opacity: 0.035; }
  .sakura--2, .sakura--6, .sakura--9 { display: none; }
  .popular, .benefits, .use-cases, .faq, .final-cta { padding-top: 72px; padding-bottom: 72px; }
  .benefits { padding-bottom: 0; }
  .use-cases { padding-top: 44px; }
  .section-intro h2, .final-cta h2 { font-size: 34px; }
  .popular-heading { margin-bottom: 28px; display: block; }
  .popular .section-intro--row > p { margin-top: 10px; font-size: 15px; }
  .popular .section-intro h2 { font-size: 34px; }
  .section-intro--center { margin-bottom: 32px; }
  .popular-grid { width: calc(100% + 20px); padding-right: 20px; display: flex; gap: 12px; overflow-x: auto; scroll-padding-right: 20px; scroll-snap-type: x proximity; scrollbar-width: none; }
  .popular-grid::-webkit-scrollbar { display: none; }
  .popular-grid article { width: 154px; flex: 0 0 154px; scroll-snap-align: start; }
  .benefit-grid { gap: 12px; }
  .benefit-card { padding: 24px 22px; }
  .feature-preview { width: min(360px, calc(100vw - 58px)); flex-basis: min(360px, calc(100vw - 58px)); }
  .app-preview { height: 450px; aspect-ratio: auto; }
  .app-preview__body { padding: 18px; }
  .app-reasons__heading { margin-bottom: 26px; }
  .app-reasons__heading h2 { font-size: 28px; }
  .app-reason-grid { grid-template-columns: 1fr; }
  .app-reason-grid article { min-height: 0; padding: 24px 22px; }
  .faq .section-intro { margin-bottom: 28px; }
  .faq summary { padding: 19px 18px; }
  .faq details p { margin: -3px 48px 19px 18px; }
  .final-cta { display: block; }
  .final-cta .download-button { width: 100%; margin-top: 28px; }
  .site-footer { min-height: 0; padding: 28px 20px; flex-direction: column; gap: 8px; text-align: center; }
  .site-footer p:last-child { max-width: 520px; text-align: center; }
}
@media (max-width: 390px) {
  .hero h1 { font-size: 52px; }
  .popular-grid article { width: 146px; flex-basis: 146px; }
}
@media (max-width: 350px) {
  .app-preview { height: 30rem; }
  .app-cover-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
  .sakura-fall { display: none; }
}