/* 公司官网视觉主题；APP 演示样式继续隔离在 .demo-app 内。 */
:root {
  --bg: #f8f6f1;
  --bg-soft: #efeee9;
  --text: #20221f;
  --text-dim: #60635e;
  --text-mute: #7a7d76;
  --line: #d9ddd4;
  --brand: #355b48;
  --brand-strong: #20221f;
  --brand-soft: #e2e9df;
  --green: #355b48;
  --green-soft: #e2e9df;
  --radius: 24px;
  --radius-lg: 32px;
  --craft-serif: "Songti SC", "Noto Serif CJK SC", "STSong", "SimSun", Georgia, serif;
  --craft-paper: #fffdf8;
  --craft-company-surface: #e3e9df;
  --craft-product-surface: #dee7e5;
  --craft-blue: #dde8eb;
  --craft-lilac: #e7e3e0;
  --craft-yellow: #efe4bc;
  --craft-pink: #eedfd7;
  --craft-sage: #e2e9df;
  --craft-nav: #fffdf8d9;
  /* 液态玻璃：接近无色的玻璃体；饱和度过高会放大背景色差，反而显得不透明 */
  --craft-glass-bg: linear-gradient(180deg, rgba(255, 255, 255, .16), rgba(255, 255, 255, .05));
  --craft-glass-bg-scrolled: linear-gradient(180deg, rgba(255, 255, 255, .62), rgba(255, 255, 255, .46));
  --craft-glass-edge: linear-gradient(150deg, rgba(255,255,255,.98), rgba(255,255,255,.34) 26%, rgba(255,255,255,.08) 50%, rgba(255,255,255,.46) 82%, rgba(255,255,255,.96));
  --craft-glass-rim: inset 0 1px 0 rgba(255,255,255,.95), inset 0 -1px 0 rgba(255,255,255,.4), inset 1px 0 0 rgba(255,255,255,.6), inset -1px 0 0 rgba(255,255,255,.6), 0 1px 1px rgba(32,34,31,.05), 0 10px 26px -8px rgba(53,91,72,.2), 0 26px 52px -16px rgba(53,91,72,.18);
  --craft-glass-blur: 5px;
  --craft-glass-saturate: 150%;
  --craft-nav-height: 52px;
  --craft-nav-radius: var(--craft-pill);
  --craft-nav-width: calc(100% - 128px);
  --craft-nav-action-height: 36px;
  --craft-brand-size: 40px;
  --craft-brand-nav-size: 34px;
  --craft-brand-radius: 12px;
  --craft-demo-story-width: 440px;
  --craft-shadow: 0 1px 3px rgba(32, 34, 31, .03), 0 4px 14px rgba(53, 91, 72, .06), 0 18px 36px rgba(53, 91, 72, .08);
  --craft-card-shadow: 0 1px 2px rgba(32, 34, 31, .025), 0 4px 18px rgba(53, 91, 72, .045), 0 18px 42px rgba(53, 91, 72, .07);
  --craft-page-inset: 16px;
  --craft-nav-top: 32px;
  --craft-space: 24px;
  --craft-space-large: 48px;
  --craft-section: 108px;
  --craft-hero-top: 176px;
  --craft-hero-bottom: 72px;
  --craft-title: clamp(42px, 5.5vw, 76px);
  --craft-section-title: clamp(32px, 3.6vw, 50px);
  --craft-pill: 999px;
  --craft-hairline: 1px;
  --craft-icon: 46px;
  --craft-motion: 240ms;
  --craft-ease-out: cubic-bezier(.23, 1, .32, 1);
  --craft-ease-in-out: cubic-bezier(.77, 0, .175, 1);
}
body { padding: var(--craft-page-inset); }
::selection { background: rgba(53, 91, 72, .2); color: var(--text); }
.progress { display: none; }
/* 液态玻璃：折射优先（Chromium 生效），其余浏览器回退到纯模糊；白色填充只留一点点 */
.nav { top: var(--craft-nav-top); left: 0; right: 0; width: var(--craft-nav-width); height: var(--craft-nav-height); max-width: 1120px; margin-inline: auto; border: 0; border-radius: var(--craft-nav-radius); background: var(--craft-glass-bg); box-shadow: var(--craft-glass-rim); backdrop-filter: blur(var(--craft-glass-blur)) saturate(var(--craft-glass-saturate)) brightness(1.03); -webkit-backdrop-filter: blur(var(--craft-glass-blur)) saturate(var(--craft-glass-saturate)) brightness(1.03); backdrop-filter: url(#lg-nav-refraction) blur(var(--craft-glass-blur)) saturate(var(--craft-glass-saturate)) brightness(1.03); -webkit-backdrop-filter: url(#lg-nav-refraction) blur(var(--craft-glass-blur)) saturate(var(--craft-glass-saturate)) brightness(1.03); transition: background 0.25s ease, box-shadow 0.25s ease; }
.nav.is-scrolled { background: var(--craft-glass-bg-scrolled); border: 0; }
.nav::before { content: ''; position: absolute; inset: 0; padding: var(--craft-hairline); border-radius: inherit; background: var(--craft-glass-edge); pointer-events: none; -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite: xor; mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); mask-composite: exclude; }
.nav__inner { position: relative; z-index: 1; height: 100%; padding: 8px 12px; }
.brand__mark { width: var(--craft-brand-size); height: var(--craft-brand-size); flex-shrink: 0; border-radius: var(--craft-brand-radius); background: transparent; overflow: hidden; }
.brand__mark::before { background-size: contain; }
.nav .brand__mark { width: 28px; height: 28px; }
.nav .brand__name { font-size: 16px; letter-spacing: 0; }
.nav__links { gap: 12px; }
.nav__links a { display: inline-flex; align-items: center; height: var(--craft-nav-action-height); padding: 0 12px; line-height: 1; }
.nav__links .nav__cta { padding: 0; margin-left: 0; }
.nav__cta .btn { height: var(--craft-nav-action-height); padding: 0 16px; font-size: 14px; }
.brand__name { font-size: 22px; font-weight: 750; letter-spacing: -.03em; }
.brand__sub { display: none; }
.nav__links a { color: var(--text); border-radius: 10px; }
.nav__links a.is-active::after { display: none; }
.nav__links a.is-active { background: var(--bg-soft); }
.btn { border-radius: 10px; padding: 13px 26px; font-weight: 500; }
.btn--primary { background: var(--text); color: var(--craft-paper); }
.btn--primary:hover { background: var(--brand); box-shadow: var(--craft-shadow); }
.btn--ghost { background: var(--craft-nav); border-color: transparent; box-shadow: var(--craft-shadow); }
.btn--sm { padding: 9px 18px; }
.nav__cta.is-active { background: transparent !important; }
.hero { padding-top: var(--craft-hero-top); padding-bottom: var(--craft-hero-bottom) !important; border-radius: var(--radius-lg); background: var(--craft-company-surface); overflow: clip; }
.site-index .hero { background: var(--craft-company-surface) url('../images/website/sky-paper.svg') center / cover; }
.hero__title { font-family: var(--craft-serif); font-size: var(--craft-title) !important; line-height: 1.17; font-weight: 400; letter-spacing: 0; }
.hero__desc { font-size: 16px; line-height: 1.85; max-width: 590px; }
.hero__actions { margin-top: var(--craft-space); }
.hero__meta { margin-top: var(--craft-space); gap: 8px; }
.chip { padding: 5px 12px; font-size: 12px; border-color: transparent; background: var(--craft-nav); color: var(--text-dim); border-radius: var(--craft-pill); }
.grad-text { color: inherit; }
.section { padding-block: var(--craft-section); }
.section--tight { padding-block: var(--craft-space-large); }
.section--soft { margin-block: var(--craft-space); border-radius: var(--radius-lg); background: var(--bg-soft); }
.section-title,.cta h2 { font-family: var(--craft-serif); font-size: var(--craft-section-title); font-weight: 400; line-height: 1.35; letter-spacing: 0; }
.eyebrow { padding: 0; background: transparent; border: 0; color: var(--text-dim); font-family: var(--font-sans); font-size: 13px; letter-spacing: .12em; margin-bottom: var(--craft-space); }
.section-lead { max-width: 620px; font-size: 16px; line-height: 1.9; }
.stats { background: transparent; border: 0; border-radius: 0; gap: var(--craft-space); }
.stat { background: transparent; border-right: var(--craft-hairline) solid var(--line); }
.stat:last-child { border-right: 0; }
.stat__num { color: var(--text); font-family: var(--craft-serif); font-weight: 400; font-size: 42px; }
.card,.highlight,.platform-card { position: relative; overflow: hidden; border: 0; border-radius: var(--radius); padding: 32px; background: var(--craft-paper); box-shadow: var(--craft-card-shadow); transition: box-shadow var(--craft-motion) var(--craft-ease-out); }
.card::after,.highlight::after,.platform-card::after { content: ''; position: absolute; top: -25%; bottom: -25%; left: -70%; width: 44%; background: linear-gradient(100deg, transparent, rgba(255,255,255,.72) 46%, transparent); transform: skewX(-16deg); opacity: 0; pointer-events: none; }
.grid > .card:nth-child(6n+1),.grid > .highlight:nth-child(6n+1) { background: var(--craft-blue); }
.grid > .card:nth-child(6n+2),.grid > .highlight:nth-child(6n+2) { background: var(--craft-yellow); }
.grid > .card:nth-child(6n+3),.grid > .highlight:nth-child(6n+3) { background: var(--craft-lilac); }
.grid > .card:nth-child(6n+4),.grid > .highlight:nth-child(6n+4) { background: var(--craft-sage); }
.grid > .card:nth-child(6n+5),.grid > .highlight:nth-child(6n+5) { background: var(--craft-pink); }
.card h3,.highlight h3,.platform-card h3 { font-size: 20px; font-weight: 500; }
.card p,.highlight p,.platform-card p { font-size: 15px; line-height: 1.9; }
.card__icon,.highlight__icon,.platform-card__icon { width: var(--craft-icon); height: var(--craft-icon); border: 0; border-radius: 0; background: transparent; color: var(--text); }
.card__icon svg,.highlight__icon svg,.platform-card__icon svg { width: 100%; height: 100%; }
.card__icon { margin-bottom: var(--craft-space); }
.quote { border: 0; background: var(--craft-sage); border-radius: var(--radius-lg); padding: 64px 40px; }
.quote__text { font-family: var(--craft-serif); font-weight: 400; font-size: 32px; }
.quote__by { font-family: var(--font-sans); color: var(--text-dim); }
.cta { padding: 80px var(--craft-space-large); border: 0; background: var(--craft-yellow); box-shadow: var(--craft-card-shadow); }
.footer { background: transparent; margin-top: 0; padding-top: var(--craft-space-large); }
.footer__bottom { justify-content: center; text-align: center; }
.footer__filing { width: 100%; text-align: center; color: var(--text-dim); }
.footer__filing a:hover { text-decoration: underline; }
.title-item { background: transparent; border: 0; border-bottom: var(--craft-hairline) solid var(--line); border-radius: 0; padding: 14px 0; }
.title-item:hover { background: transparent; }
.title-item .dot { background: var(--green); }
.title-list { gap: 0; padding: var(--craft-space); border-radius: var(--radius); background: var(--craft-paper); }
.tags .tag { background: var(--craft-paper); border-color: transparent; border-radius: var(--craft-pill); }
.course__tag { background: var(--craft-nav); color: var(--text-dim); border: 0; border-radius: var(--craft-pill); }
.tl-item h3 { font-size: 20px; font-weight: 500; }
.tl-item__year { font-family: var(--craft-serif); font-size: 24px; }
.faq { border: 0; border-bottom: var(--craft-hairline) solid var(--line); border-radius: 0; background: transparent; }
.platform-card { background: var(--craft-sage); }
.shots { background: var(--craft-product-surface); border-color: rgba(53, 91, 72, .12); }
.site-about .hero { background: var(--craft-company-surface); text-align: center; }
.site-about .hero__desc { margin-inline: auto; }
.site-about .hero__meta { justify-content: center; max-width: 880px; margin-inline: auto; }
.site-download .hero { background: var(--craft-company-surface); }
.site-download #download { padding-top: var(--craft-space-large) !important; }
.product-demo {
  --demo-bg: var(--craft-blue);
  --demo-ink: var(--text);
  --demo-muted: var(--text-dim);
  --demo-faint: var(--text-mute);
  --demo-edge: #242c2420;
  --demo-active: #fffdf880;
  --demo-accent: var(--text);
  --demo-light: #ffffff60;
  --demo-mint: #c5d1ed80;
  --demo-stage-height: 820px;
  --demo-stage-gap: 128px;
  padding: var(--craft-space) 0 var(--craft-space-large);
}
.demo-stage { max-width: none; grid-template-columns: minmax(0, var(--craft-demo-story-width)) var(--demo-device-width); justify-content: center; background: var(--demo-bg) url('../images/website/sky-paper.svg') center bottom / cover; }
.demo-story h2 { font-family: var(--craft-serif); font-weight: 400; letter-spacing: 0; }
.demo-stage-grid { display: none; }
.demo-steps button { border-radius: var(--radius); }
@media (hover: hover) and (pointer: fine) {
  .card:hover,.highlight:hover,.platform-card:hover { border-color: transparent; box-shadow: var(--craft-shadow); }
  .card:hover::after,.highlight:hover::after,.platform-card:hover::after { animation: card-sheen .95s var(--craft-ease-out); }
}
@media (max-width: 1000px) {
  :root { --craft-title: 60px; --craft-section: 80px; }
  .demo-stage { grid-template-columns: minmax(0, 1fr) var(--demo-device-width); }
  .product-demo { --demo-stage-gap: 64px; }
}
@media (max-width: 760px) {
  :root { --craft-page-inset: 8px; --craft-nav-top: 20px; --craft-hero-top: 140px; --craft-hero-bottom: 56px; --craft-title: clamp(36px, 9vw, 54px); --craft-section-title: 32px; --craft-section: 64px; --craft-space-large: 32px; --craft-icon: 38px; }
  .nav { --craft-nav-width: calc(100% - 40px); }
  .nav__inner { padding: 8px 14px; }
  .nav__toggle { position: absolute; right: 10px; top: 6px; border: 0; border-radius: var(--craft-pill); background: transparent; }
  .nav__links { top: 88px; left: 20px; right: 20px; border: 0; border-radius: var(--radius); background: var(--craft-glass-bg-scrolled); padding: 18px; box-shadow: var(--craft-glass-rim); backdrop-filter: blur(18px) saturate(var(--craft-glass-saturate)); -webkit-backdrop-filter: blur(18px) saturate(var(--craft-glass-saturate)); }
  .nav__links a { min-height: var(--craft-nav-action-height); height: auto; padding: 12px; }
  .nav__links .nav__cta { margin-top: 8px; }
  .nav__cta .btn { width: 100%; }
  .brand__name { font-size: 15px; letter-spacing: 0; }
  .hero .wrap { padding-inline: var(--craft-space); }
  .hero__desc { font-size: 14px; }
  .hero__actions { justify-content: center; }
  .hero__actions .btn { width: auto; }
  .hero__meta .chip { white-space: normal; }
  .site-about .hero__meta { gap: 8px; }
  .card,.highlight,.platform-card { padding: var(--craft-space) !important; }
  .card h3,.highlight h3 { font-size: 18px; }
  .stats { gap: 0; }
  .stat { padding: 18px 8px; }
  .stat:nth-child(2) { border-right: 0; }
  .stat__num { font-size: 32px; }
  .quote__text { font-size: 26px; }
  .cta { padding: 48px 24px !important; }
  .shots { padding: var(--craft-space); }
  .shot { flex-basis: 82%; }
  .demo-stage { grid-template-columns: minmax(0, 1fr); padding: 36px 24px; }
  .footer__bottom { gap: 10px; }
}
/* ---------- 悬停：卡片光泽扫过（替代整块上浮） ---------- */
@keyframes card-sheen {
  0% { left: -70%; opacity: 0; }
  18% { opacity: .95; }
  100% { left: 130%; opacity: 0; }
}

/* ---------- 首页 Hero：流动极光 + 跟随指针的高光 ---------- */
.company-hero { isolation: isolate; }
.company-hero__aurora,.company-hero__glow { position: absolute; z-index: 0; pointer-events: none; }
.company-hero__aurora {
  inset: -18%;
  background:
    radial-gradient(36% 44% at 18% 26%, rgba(53, 91, 72, .22), rgba(53, 91, 72, 0) 70%),
    radial-gradient(30% 38% at 82% 18%, rgba(255, 253, 248, .55), rgba(255, 253, 248, 0) 72%),
    radial-gradient(40% 48% at 64% 86%, rgba(53, 91, 72, .14), rgba(53, 91, 72, 0) 74%);
  filter: blur(34px) saturate(105%);
  animation: hero-aurora 22s var(--craft-ease-in-out) infinite alternate;
}
.company-hero__glow {
  inset: 0;
  background: radial-gradient(320px circle at var(--hero-x, 50%) var(--hero-y, 35%), rgba(255, 253, 248, .9), rgba(255, 253, 248, 0) 72%);
  opacity: 0;
  transition: opacity .45s var(--craft-ease-out);
}
.company-hero:hover .company-hero__glow { opacity: .8; }
.company-hero .wrap { position: relative; z-index: 2; }
@keyframes hero-aurora {
  0% { transform: translate3d(-2%, -1%, 0) scale(1); }
  50% { transform: translate3d(3%, 2%, 0) scale(1.08); }
  100% { transform: translate3d(-1%, 3%, 0) scale(1.03); }
}
.company-hero .grad-text { color: var(--brand); }
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .company-hero .grad-text {
    background: linear-gradient(96deg, #2f5240, #5f7a45 28%, #2f5240 56%, #4a6f60);
    background-size: 220% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: hero-text-flow 9s linear infinite;
  }
}
@keyframes hero-text-flow {
  to { background-position: -220% 0; }
}

/* ---------- 进场：首屏分层入场（一次性，只动 transform / opacity） ---------- */
.hero > .wrap { perspective: 1000px; }
.hero [data-reveal] {
  transform: translateY(26px) rotateX(9deg);
  transform-origin: 50% 100%;
  transition: opacity .72s var(--craft-ease-out), transform .72s var(--craft-ease-out);
}
.hero [data-reveal].is-in { transform: none; }
.hero [data-reveal]:nth-child(2) { transition-delay: 90ms; }
.hero [data-reveal]:nth-child(3) { transition-delay: 180ms; }
.hero [data-reveal]:nth-child(4) { transition-delay: 270ms; }
.hero [data-reveal]:nth-child(5) { transition-delay: 360ms; }
.hero [data-reveal]:nth-child(6) { transition-delay: 450ms; }

/* ---------- 进场：导航一次性落下 ---------- */
@keyframes nav-drop {
  from { opacity: 0; transform: translateY(-14px); }
  to { opacity: 1; transform: none; }
}
.nav { animation: nav-drop .62s var(--craft-ease-out) both; }

/* ---------- 强调：品牌绿小面积强调（chip--accent 已被主题色覆盖，这里恢复层级） ---------- */
.chip--accent { background: var(--brand-soft); color: var(--brand); border-color: transparent; }

/* ---------- 修正：旧主题遗留的中性分割色 ---------- */
:root { --line-2: var(--line); }
.step:hover { border-color: var(--line); }
.faq.is-open { border-color: var(--brand-soft); }
.title-item:hover { border-color: var(--line); }

/* ---------- 交互反馈：按钮按压（240ms 级别） ---------- */
.btn { transition: background var(--craft-motion) var(--craft-ease-out), border-color var(--craft-motion) var(--craft-ease-out), color var(--craft-motion) var(--craft-ease-out), box-shadow var(--craft-motion) var(--craft-ease-out), transform 120ms var(--craft-ease-out); }
.btn:active { transform: scale(.975); }

/* 系统关闭透明度效果时，玻璃退回不透明纸张，保证可读性 */
@media (prefers-reduced-transparency: reduce) {
  .nav,.nav__links { background: var(--craft-paper); backdrop-filter: none; -webkit-backdrop-filter: none; }
  .nav::before { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .card::after,.highlight::after,.platform-card::after { display: none; }
  .company-hero__aurora { animation: none; }
  .company-hero__glow { display: none; }
  .company-hero .grad-text { background: none; color: var(--brand); animation: none; -webkit-background-clip: border-box; background-clip: border-box; }
  .nav { animation: none; }
  .hero > .wrap { perspective: none; }
  .hero [data-reveal] { transform: none; transition: opacity .3s linear; }
  .hero [data-reveal]:nth-child(n) { transition-delay: 0ms; }
  .btn:active { transform: none; }
}