/* 云航官网视觉润色层
 * 只负责字体、留白、视觉层级与响应式，不改变内容和收录结构。
 */
:root {
  --page-gutter: clamp(20px, 5vw, 72px);
  --section-space: clamp(56px, 5vw, 76px);
  --reading-width: 72ch;
  --soft-shadow: 0 18px 54px rgba(9, 45, 45, .09);
  --lift-shadow: 0 24px 72px rgba(9, 45, 45, .13);
  --surface-glass: rgba(255, 255, 255, .78);
}

html {
  overflow-x: hidden;
  overflow-x: clip;
  font-size: 16px;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  overflow-x: hidden;
  overflow-x: clip;
  font-family: Inter, "SF Pro Text", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(11, 143, 130, .2); color: var(--ink); }

:where(h1, h2, h3, p, li) { text-wrap: pretty; }
:where(h1, h2, h3) { text-wrap: balance; }

:where(a, button, input, textarea, select, summary):focus-visible {
  outline: 3px solid rgba(239, 125, 87, .72);
  outline-offset: 3px;
}

:where(.btn, .button, .nav-cta, .menu-toggle, .nav-toggle, .insight-filter, .region-chip, .copy-btn) {
  min-height: 44px;
}

.site-header {
  padding-inline: var(--page-gutter);
  box-shadow: 0 8px 32px rgba(9, 45, 45, .045);
}

.site-header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-inline: auto;
}

.brand,
.footer-brand {
  flex: 0 0 auto;
}

.brand img,
.footer-brand img,
.footer-logo {
  display: block;
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 6px 18px rgba(9, 45, 45, .08);
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-size: 24px;
  cursor: pointer;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  box-shadow: var(--soft-shadow);
  transform: translateY(-160%);
}

.skip-link:focus { transform: translateY(0); }

.site-header .header-inner,
.container {
  width: min(1180px, calc(100vw - (var(--page-gutter) * 2)));
}

.site-nav a,
.site-header nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}

.section-pad { padding: var(--section-space) var(--page-gutter); }

.hero-grid,
.solution-grid,
.case-grid,
.insight-grid,
.service-grid {
  width: 100%;
}

.hero-copy { max-width: 760px; }
.hero-lead { max-width: 42rem; line-height: 1.8; }
.section-intro > p:not(.kicker) { max-width: 40rem; margin-top: 14px; line-height: 1.75; }
.section-intro.center > p:not(.kicker) { margin-inline: auto; }

/* 首页栏目标题统一：同字号、自然换行，不用强制单行或手工断句。 */
#top .section-intro h2,
#top .contact-copy h2 {
  max-width: 18ch;
  margin-top: 0;
  font-size: clamp(40px, 3.5vw, 50px);
  line-height: 1.16;
  letter-spacing: -.045em;
  white-space: normal;
  word-break: keep-all;
  overflow-wrap: normal;
  text-wrap: balance;
}

#top .section-intro.center { width: 100%; max-width: 980px; }
#top .section-intro.center h2 { max-width: 20ch; margin-inline: auto; }
#top #services .section-intro,
#top #insights .section-intro { max-width: 980px; }
#top #insights .section-intro h2 { max-width: 18ch; }

#top .section-intro.center { margin-bottom: 36px; }
#top .trust {
  grid-template-columns: minmax(280px, 460px) minmax(0, 680px);
  justify-content: center;
  align-items: center;
  gap: clamp(36px, 4.5vw, 64px);
}
#top .solution-grid { align-items: center; gap: clamp(36px, 5vw, 64px); }
#top .coverage {
  grid-template-columns: minmax(300px, 460px) minmax(0, 720px);
  justify-content: center;
  align-items: center;
  gap: clamp(40px, 5vw, 68px);
}
#top .contact {
  grid-template-columns: minmax(320px, 540px) minmax(420px, 620px);
  justify-content: center;
  align-items: center;
  gap: clamp(40px, 5vw, 68px);
}

#top #services .service { min-height: 320px; padding: 24px; }
#top #services .service h3 { margin: 46px 0 10px; }
#top .case-grid { gap: 16px; }
#top .case-card img { height: 240px; }
#top .insight { min-height: 205px; padding: 22px; }
#top .insight h3 { margin-top: 24px; }
#top .faq summary { padding-block: 16px; }

/* 标题进入时先立住视觉焦点，再带出说明文字与装饰线。 */
#top .section-intro.reveal h2,
#top .contact-copy.reveal h2 {
  position: relative;
  opacity: 0;
  filter: blur(8px);
  transform: translateY(28px) scale(.975);
  transition: opacity .7s ease, filter .7s ease, transform .8s cubic-bezier(.2, .72, .2, 1);
}

#top .section-intro.reveal h2::after,
#top .contact-copy.reveal h2::after {
  display: block;
  width: 76px;
  height: 4px;
  margin-top: 20px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--coral), var(--teal));
  content: "";
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .65s cubic-bezier(.2, .72, .2, 1) .34s;
}

#top .section-intro.center.reveal h2::after { margin-inline: auto; transform-origin: center; }

#top .section-intro.reveal .kicker,
#top .contact-copy.reveal .kicker {
  opacity: 0;
  transform: translateX(-16px);
  transition: opacity .5s ease .08s, transform .55s ease .08s;
}

#top .section-intro.reveal > p:not(.kicker),
#top .contact-copy.reveal > p:not(.kicker) {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .55s ease .34s, transform .6s ease .34s;
}

#top .section-intro.reveal.is-visible h2,
#top .contact-copy.reveal.is-visible h2,
#top .section-intro.reveal.is-visible .kicker,
#top .contact-copy.reveal.is-visible .kicker,
#top .section-intro.reveal.is-visible > p:not(.kicker),
#top .contact-copy.reveal.is-visible > p:not(.kicker) {
  opacity: 1;
  filter: none;
  transform: none;
}

#top .section-intro.reveal.is-visible h2::after,
#top .contact-copy.reveal.is-visible h2::after { transform: scaleX(1); }

#top .service-grid .reveal:nth-child(2),
#top .stats .reveal:nth-child(2),
#top .case-grid .reveal:nth-child(2) { transition-delay: .07s; }
#top .service-grid .reveal:nth-child(3),
#top .stats .reveal:nth-child(3),
#top .case-grid .reveal:nth-child(3) { transition-delay: .14s; }
#top .service-grid .reveal:nth-child(4),
#top .stats .reveal:nth-child(4) { transition-delay: .21s; }

.service,
.stat,
.insight,
.case-card,
.article-note,
.side-nav,
.contact-item,
.contact-form,
.flipbook {
  border-color: rgba(11, 143, 130, .15);
  background: var(--surface-glass);
  box-shadow: var(--soft-shadow);
}

.service,
.stat,
.insight,
.case-card {
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}

@media (hover: hover) and (pointer: fine) {
  .service:hover,
  .stat:hover,
  .insight:hover,
  .case-card:hover {
    transform: translateY(-5px);
    border-color: rgba(11, 143, 130, .28);
    box-shadow: var(--lift-shadow);
  }
}

/* 栏目页与文章页：标题居中，正文保持适合阅读的左对齐。 */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(58px, 6vw, 78px) 0 clamp(44px, 4.5vw, 62px);
  text-align: center;
  isolation: isolate;
}

.page-hero::before,
.page-hero::after {
  position: absolute;
  z-index: -1;
  content: "";
  border: 1px solid rgba(11, 143, 130, .1);
  border-radius: 50%;
}

.page-hero::before { width: 34rem; height: 34rem; top: -25rem; left: -8rem; }
.page-hero::after { width: 25rem; height: 25rem; right: -8rem; bottom: -20rem; }
.page-hero .breadcrumbs { margin-bottom: 30px; }
.page-hero h1 { max-width: 18ch; margin-inline: auto; font-size: clamp(38px, 5vw, 64px); line-height: 1.16; letter-spacing: -.045em; }
.page-hero .lead { max-width: 58ch; margin-inline: auto; line-height: 1.85; }

.section { padding: clamp(52px, 5vw, 72px) 0; }
.content-grid {
  grid-template-columns: minmax(0, 760px) minmax(220px, 270px);
  justify-content: center;
  gap: clamp(42px, 6vw, 78px);
}

.article {
  max-width: var(--reading-width);
  font-size: clamp(1rem, .3vw + .96rem, 1.125rem);
  line-height: 1.95;
}

.article > p,
.article > ul,
.article > ol { max-width: var(--reading-width); }
.article p { margin-bottom: 1.35em; }
.article h2 { margin-top: 2.15em; line-height: 1.35; }
.article h3 { margin-top: 1.8em; }
.article blockquote { margin-block: 2rem; line-height: 1.85; }
.article a:not(.button) { text-underline-offset: .18em; text-decoration-thickness: .08em; }
.side-nav { padding: 24px; }
.side-nav a { min-height: 44px; display: flex; align-items: center; }

/* 二级页面通用模块。 */
.section-heading { max-width: 720px; margin: 0 auto 42px; text-align: center; }
.section-heading h2 { margin: 0; font-size: clamp(32px, 4vw, 52px); line-height: 1.18; }
.section-heading .lead { margin: 16px auto 0; color: var(--muted); line-height: 1.8; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid var(--teal);
  border-radius: 999px;
  background: var(--teal);
  color: #fff;
  font-weight: 800;
  line-height: 1.35;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.button-secondary,
.button-quiet { background: transparent; color: var(--teal); }
.button:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(11, 143, 130, .2); }

.cta-band { padding: clamp(52px, 7vw, 82px) 0; background: var(--mint); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.cta-inner h2 { margin: 0; font-size: clamp(28px, 3vw, 42px); line-height: 1.2; }
.cta-inner p { margin: 12px 0 0; color: var(--muted); }

.flipbook { max-width: 920px; margin: 0 auto; padding: clamp(14px, 2vw, 24px); border: 1px solid var(--line); border-radius: 28px; }
.flipbook-stage { position: relative; overflow: hidden; aspect-ratio: 16 / 10; border-radius: 20px; background: var(--mint); }
.flipbook-page { display: none; position: absolute; inset: 0; }
.flipbook-page.is-active { display: block; }
.flipbook-page img { width: 100%; height: 100%; object-fit: cover; }
.flipbook-page span { position: absolute; left: 18px; bottom: 18px; padding: 8px 13px; border-radius: 999px; background: rgba(6, 35, 35, .78); color: #fff; font-weight: 800; backdrop-filter: blur(8px); }
.flipbook-controls { display: flex; align-items: center; justify-content: center; gap: 22px; margin-top: 18px; }
.flipbook-controls button { width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%; background: #fff; color: var(--ink); cursor: pointer; }

.contact-grid { display: grid; grid-template-columns: minmax(0, .82fr) minmax(420px, 1.18fr); gap: clamp(42px, 7vw, 88px); align-items: start; }
.contact-details { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.contact-item { min-width: 0; padding: 22px; border: 1px solid var(--line); border-radius: 18px; }
.contact-item small { display: block; margin-bottom: 8px; color: var(--muted); }
.contact-item strong { display: block; overflow-wrap: anywhere; font-size: clamp(16px, 1.5vw, 20px); }
.contact-item a { color: inherit; text-decoration: none; }
.contact-details .article-note { grid-column: 1 / -1; }
.contact-grid > .contact-form { padding: clamp(24px, 4vw, 42px); border: 1px solid var(--line); border-radius: 26px; }
.contact-grid > .contact-form h2 { margin: 0; font-size: clamp(28px, 3vw, 40px); }
.contact-grid form { display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-group { display: grid; gap: 8px; }
.form-group label { color: var(--ink); font-size: 14px; font-weight: 800; }
.form-group :is(input, select, textarea) {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}
.form-group textarea { min-height: 132px; resize: vertical; }
.form-help { margin: 0; color: var(--muted); font-size: 13px; }

.site-footer { display: block; padding: 56px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: clamp(32px, 5vw, 60px); }
.footer-grid h3 { margin: 4px 0 14px; color: #fff; font-size: 15px; }
.footer-grid p { max-width: 38ch; color: #8eb5ae; font-size: 13px; }
.footer-links { display: grid; gap: 8px; }
.footer-links a,
.footer-links span { color: #8eb5ae; font-size: 13px; text-decoration: none; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 36px; padding-top: 20px; border-top: 1px solid rgba(207, 228, 223, .15); }
.footer-bottom a { color: inherit; text-decoration: none; }
.footer-bottom img { vertical-align: middle; }

@media (min-width: 1440px) {
  .hero-grid { gap: 96px; }
  .article { font-size: 18px; }
}

@media (min-width: 901px) and (max-width: 1180px) {
  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid { gap: 5vw; }
  .content-grid { grid-template-columns: minmax(0, 1fr) 240px; }
}

@media (max-width: 1100px) {
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  :root { --page-gutter: clamp(22px, 6vw, 48px); --section-space: clamp(52px, 7vw, 64px); }
  .hero-copy { max-width: 680px; margin-inline: auto; text-align: center; }
  .hero-copy .kicker { justify-content: center; border-left: 0; border-radius: 999px; }
  .hero h1,
  .hero h1 .hero-claim,
  .hero-lead { margin-inline: auto; }
  .actions,
  .hero-proof { justify-content: center; }
  .hero-visual { min-height: 320px; }
  .trust .section-intro { max-width: 680px; margin-inline: auto; text-align: center; }
  #top .trust,
  #top .coverage,
  #top .contact { grid-template-columns: 1fr; align-items: stretch; gap: 32px; }
  .content-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .site-header .header-inner { width: 100%; }
  .nav-toggle,
  .menu-toggle { display: grid; width: 44px; height: 44px; padding: 0; place-items: center; }
  .site-nav {
    display: none;
    position: absolute;
    top: 72px;
    right: var(--page-gutter);
    left: var(--page-gutter);
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fff;
    box-shadow: var(--lift-shadow);
  }
  .site-nav.is-open { display: grid; }
  .article { max-width: 760px; margin-inline: auto; }
  .side-nav { position: static; max-width: 760px; width: 100%; margin-inline: auto; }
  .cta-inner { align-items: flex-start; flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  #top .section-intro h2,
  #top .contact-copy h2 { max-width: 16ch; font-size: clamp(34px, 5vw, 40px); }
  #top .section-intro.center h2 { max-width: 18ch; }
  #top #services .service { min-height: 290px; }
}

@media (max-width: 640px) {
  :root { --page-gutter: 20px; --section-space: 48px; }
  .site-header { min-height: 68px; padding-block: 10px; }
  .brand strong { font-size: 16px; }
  .brand small { font-size: 8px; }
  .menu-toggle,
  .nav-toggle { display: grid; width: 44px; height: 44px; padding: 0; place-items: center; }
  .hero { min-height: auto; }
  .hero h1 { max-width: 10ch; font-size: clamp(38px, 11vw, 50px); letter-spacing: -.045em; }
  .hero h1 .hero-claim { max-width: 10ch; white-space: normal; word-break: normal; overflow-wrap: normal; }
  .hero-audience { font-size: 14px; line-height: 1.65; }
  .hero-lead { font-size: 16px; }
  .actions { display: grid; grid-template-columns: 1fr; width: 100%; }
  .actions .btn { width: 100%; }
  .hero-proof { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; gap: 14px 10px; }
  .hero-proof span { padding: 10px 8px; border-radius: 12px; background: rgba(255, 255, 255, .58); }
  .hero-visual { display: none; }
  .hero-panel { width: min(82vw, 310px); }
  .orbit-a { width: 94vw; height: 52vw; }
  .orbit-b { width: 76vw; height: 40vw; }
  .section-intro h2,
  .solution h2,
  .contact h2 { max-width: none; font-size: clamp(30px, 9vw, 40px); }
  #top .section-intro h2,
  #top .contact-copy h2 { max-width: 15ch; font-size: clamp(30px, 8.2vw, 34px); line-height: 1.2; }
  #top .section-intro.center h2 { max-width: 16ch; }
  #top .section-intro.reveal h2::after,
  #top .contact-copy.reveal h2::after { margin-top: 16px; }
  .service,
  #services .service { min-height: 0; padding: 24px; }
  #top #services .service { min-height: 0; padding: 22px; }
  .service h3,
  #services .service h3 { margin: 40px 0 10px; }
  #top #services .service h3 { margin: 32px 0 10px; }
  .service-meta { align-items: flex-start; }
  .case-card img { height: auto; aspect-ratio: 4 / 3; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .stat { padding: 18px; }
  .page-hero { padding: 58px 0 48px; }
  .page-hero .breadcrumbs { margin-bottom: 22px; font-size: 12px; }
  .page-hero h1 { max-width: 15ch; font-size: clamp(32px, 9.6vw, 42px); line-height: 1.22; }
  .page-hero .lead { font-size: 16px; line-height: 1.8; }
  .section { padding: 56px 0 74px; }
  .article { font-size: 16px; line-height: 1.9; }
  .article h2 { font-size: clamp(25px, 7vw, 30px); }
  .article h3 { font-size: 20px; }
  .article blockquote,
  .article-note { margin-inline: 0; padding: 20px; }
  .contact-details,
  .form-row { grid-template-columns: 1fr; }
  .contact-details .article-note { grid-column: auto; }
  .contact-grid > .contact-form { padding: 24px 20px; }
  .flipbook { border-radius: 20px; }
  .flipbook-stage { aspect-ratio: 4 / 3; border-radius: 14px; }
  .cta-inner .button { width: 100%; }
  .footer-bottom { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 390px) {
  :root { --page-gutter: 16px; }
  .region-chips { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  .service,
  .stat,
  .insight,
  .case-card,
  .button { transition: none; }
  #top .section-intro.reveal h2,
  #top .contact-copy.reveal h2,
  #top .section-intro.reveal .kicker,
  #top .contact-copy.reveal .kicker,
  #top .section-intro.reveal > p:not(.kicker),
  #top .contact-copy.reveal > p:not(.kicker) {
    opacity: 1;
    filter: none;
    transform: none;
    transition: none;
  }
  #top .section-intro.reveal h2::after,
  #top .contact-copy.reveal h2::after { transform: scaleX(1); transition: none; }
}

/* v6 · 液态玻璃视觉层：保持企业站阅读对比度，只把动效用于层级与指针反馈。 */
:root {
  --font-body: "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-display: "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --glass-border: rgba(255, 255, 255, .76);
  --glass-edge: rgba(11, 143, 130, .15);
  --glass-shadow: 0 18px 46px rgba(9, 45, 45, .10), inset 0 1px 0 rgba(255, 255, 255, .86);
}

body { font-family: var(--font-body); }
:where(h1, h2, h3, .brand strong, .stat strong) { font-family: var(--font-display); }

html[data-font="modern"] {
  --font-body: "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "PingFang SC", "Microsoft YaHei", sans-serif;
}

html[data-font="humanist"] {
  --font-body: "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-display: "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

html[data-font="modern"] :where(h1, h2, h3) {
  font-weight: 800;
  letter-spacing: -.045em;
}

html[data-font="humanist"] :where(h1, h2, h3) {
  font-weight: 600;
  letter-spacing: .012em;
  line-height: 1.22;
}

html[data-font="humanist"] :where(.hero h1, .page-hero h1, main h2) {
  border-radius: .7em;
}

html[data-font="editorial"] {
  --font-body: Inter, "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Songti SC", STSong, "Noto Serif CJK SC", "Source Han Serif SC", serif;
}

html[data-font="editorial"] :where(h1, h2, h3) {
  font-weight: 700;
  letter-spacing: -.025em;
}

/* 主模块成为有折射高光的玻璃面板，鼠标位置只改变光感，不推动内容。 */
:is(.service, .stat, .insight, .case-card, .article-note, .side-nav, .contact-item, .contact-form, .flipbook, .region-detail) {
  --glass-x: 50%;
  --glass-y: 30%;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-color: var(--glass-border);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, .86), rgba(243, 252, 249, .66)) padding-box,
    linear-gradient(135deg, rgba(255, 255, 255, .94), rgba(11, 143, 130, .18), rgba(239, 125, 87, .16)) border-box;
  box-shadow: var(--glass-shadow);
  -webkit-backdrop-filter: blur(18px) saturate(135%);
  backdrop-filter: blur(18px) saturate(135%);
  transform: translateZ(0);
}

:is(.service, .stat, .insight, .case-card, .article-note, .side-nav, .contact-item, .contact-form, .flipbook, .region-detail)::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -1px;
  pointer-events: none;
  background:
    radial-gradient(circle at var(--glass-x) var(--glass-y), rgba(255, 255, 255, .92) 0, rgba(183, 240, 229, .30) 16%, transparent 42%),
    linear-gradient(112deg, transparent 18%, rgba(255, 255, 255, .44) 38%, transparent 58%);
  opacity: .64;
  transition: opacity .35s ease, transform .55s cubic-bezier(.2, .7, .2, 1);
}

@media (hover: hover) and (pointer: fine) {
  :is(.service, .stat, .insight, .case-card, .article-note, .side-nav, .contact-item, .contact-form, .flipbook, .region-detail):hover {
    border-color: rgba(255, 255, 255, .94);
    box-shadow: 0 24px 58px rgba(9, 45, 45, .14), inset 0 1px 0 #fff;
  }

  :is(.service, .stat, .insight, .case-card, .article-note, .side-nav, .contact-item, .contact-form, .flipbook, .region-detail):hover::before {
    opacity: 1;
    transform: scale(1.035);
  }
}

/* 标题背板按 h1 / h2 / h3 逐级减弱，避免每一级都变成厚重卡片。 */
:where(.hero h1, .page-hero h1) {
  width: fit-content;
  padding: clamp(12px, 1.5vw, 20px) clamp(16px, 2.2vw, 28px);
  border: 1px solid rgba(255, 255, 255, .70);
  border-radius: clamp(18px, 2vw, 28px);
  background: linear-gradient(135deg, rgba(255, 255, 255, .72), rgba(239, 251, 247, .40));
  box-shadow: 0 20px 60px rgba(9, 45, 45, .10), inset 0 1px 0 rgba(255, 255, 255, .9);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
  backdrop-filter: blur(18px) saturate(130%);
}

.hero h1 {
  display: block;
  width: min(100%, 760px);
}

.page-hero h1 { display: inline-block; }

:where(main h2) {
  width: fit-content;
  max-width: 100%;
  padding: .3em .55em;
  border: 1px solid rgba(255, 255, 255, .72);
  border-radius: .42em;
  background: linear-gradient(135deg, rgba(255, 255, 255, .76), rgba(224, 247, 241, .44));
  box-shadow: 0 12px 34px rgba(9, 45, 45, .075), inset 0 1px 0 rgba(255, 255, 255, .9);
  -webkit-backdrop-filter: blur(14px) saturate(125%);
  backdrop-filter: blur(14px) saturate(125%);
}

#top :where(.section-intro h2, .contact-copy h2) {
  margin-inline: auto;
  text-align: center;
}

#top .section-intro.reveal h2::after,
#top .contact-copy.reveal h2::after { display: none; }

html[data-font="humanist"] .hero h1 .hero-claim {
  max-width: 100%;
  white-space: normal;
  word-break: normal;
  overflow-wrap: normal;
}

:where(main h3, .footer-grid h3) {
  width: fit-content;
  padding: .34em .58em;
  border: 1px solid rgba(255, 255, 255, .68);
  border-radius: .62em;
  background: rgba(255, 255, 255, .52);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .86), 0 8px 20px rgba(9, 45, 45, .055);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.section-intro.center h2,
.section-heading h2 { margin-inline: auto; }

#top .kicker { font-size: 13px; }
#top .hero-proof { font-size: 13px; }
#top .stat small { font-size: 14px; line-height: 1.65; }
#top .service-scene,
#top .service p { font-size: 15px; line-height: 1.7; }
#top .service-meta { color: #456a66; font-size: 14px; line-height: 1.72; }
#top .insight > span,
#top .insight time,
#top .insight a { font-size: 14px; }
#top .insight h3 { font-size: 21px; line-height: 1.45; }
#top .insight-summary { color: #456a66; font-size: 15px; line-height: 1.75; }

.site-footer .footer-grid h3 {
  border-color: rgba(255, 255, 255, .12);
  background: rgba(255, 255, 255, .07);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .10);
}

:is(.insight-filter, .region-chip) {
  border-color: rgba(255, 255, 255, .72);
  background: linear-gradient(145deg, rgba(255, 255, 255, .76), rgba(232, 249, 245, .48));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9), 0 7px 18px rgba(9, 45, 45, .055);
  -webkit-backdrop-filter: blur(12px) saturate(130%);
  backdrop-filter: blur(12px) saturate(130%);
  transition: transform .2s ease, box-shadow .25s ease, background .25s ease;
}

@media (hover: hover) and (pointer: fine) {
  :is(.insight-filter, .region-chip):hover {
    transform: translateY(-2px);
    box-shadow: inset 0 1px 0 #fff, 0 11px 24px rgba(9, 45, 45, .09);
  }
}

/* 桌面指针的环境光与扩散波纹；该层不接收点击。 */
.has-liquid-ripple { position: relative; isolation: isolate; }
.has-liquid-ripple > :not(.liquid-ripple-layer) { position: relative; z-index: 1; }
.liquid-ripple-layer {
  position: absolute;
  z-index: 0;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0;
  transition: opacity .28s ease;
}
.has-liquid-ripple.is-pointer-active .liquid-ripple-layer { opacity: 1; }
.liquid-ripple-layer::before {
  content: "";
  position: absolute;
  width: min(44vw, 620px);
  aspect-ratio: 1;
  left: var(--ripple-x, 50%);
  top: var(--ripple-y, 50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(91, 214, 192, .17), rgba(11, 143, 130, .07) 32%, transparent 68%);
  filter: blur(8px);
  transform: translate(-50%, -50%);
}
.cursor-ripple {
  position: absolute;
  width: 26px;
  height: 26px;
  left: 0;
  top: 0;
  border: 1px solid rgba(11, 143, 130, .28);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, .42), rgba(91, 214, 192, .09) 45%, transparent 70%);
  box-shadow: 0 0 30px rgba(91, 214, 192, .16);
  transform: translate(-50%, -50%) scale(.2);
  animation: liquid-cursor-ripple 1.05s cubic-bezier(.14, .64, .28, 1) forwards;
}

@keyframes liquid-cursor-ripple {
  0% { opacity: .68; transform: translate(-50%, -50%) scale(.2); }
  70% { opacity: .22; }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(7); }
}

/* 仅本机预览显示字体选择器，线上域名不会出现。 */
.font-preview-toolbar {
  position: fixed;
  z-index: 999;
  right: 18px;
  bottom: 18px;
  display: flex;
  gap: 6px;
  padding: 7px;
  border: 1px solid rgba(255, 255, 255, .78);
  border-radius: 16px;
  background: rgba(244, 252, 249, .78);
  box-shadow: 0 16px 44px rgba(9, 45, 45, .16);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
}
.font-preview-toolbar button {
  min-height: 36px;
  padding: 7px 11px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--ink);
  font: 700 12px/1 var(--font-body);
  cursor: pointer;
}
.font-preview-toolbar button[aria-pressed="true"] {
  border-color: rgba(11, 143, 130, .18);
  background: #fff;
  color: var(--teal);
  box-shadow: 0 5px 14px rgba(9, 45, 45, .08);
}
.font-preview-toolbar button[data-preview-font="modern"] {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
  letter-spacing: -.04em;
}
.font-preview-toolbar button[data-preview-font="humanist"] {
  font-family: "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-weight: 600;
  letter-spacing: .035em;
}
.font-preview-toolbar button[data-preview-font="editorial"] {
  font-family: "Songti SC", STSong, serif;
  font-weight: 700;
  letter-spacing: 0;
}

@media (max-width: 900px), (hover: none), (pointer: coarse) {
  .liquid-ripple-layer { display: none; }
  .font-preview-toolbar { right: 10px; bottom: 10px; max-width: calc(100vw - 20px); }
  .font-preview-toolbar button { padding-inline: 9px; }
}

@media (max-width: 640px) {
  :where(.hero h1, .page-hero h1) { padding: 12px 14px; border-radius: 18px; }
  :where(main h2) { padding: .28em .42em; }
}

@media (prefers-reduced-motion: reduce) {
  .liquid-ripple-layer { display: none !important; }
  :is(.service, .stat, .insight, .case-card, .article-note, .side-nav, .contact-item, .contact-form, .flipbook, .region-detail)::before {
    transition: none;
  }
}

/* v10 · 统一居中体系：模块文字在各自容器内横向与纵向居中。 */
#top :is(.hero-copy, .section-intro, .contact-copy, .stat, .service, .insight, .case-card figcaption, .faq, .contact-form),
.page-hero,
.section-heading,
.section-head.center,
.service-card,
.surface,
.contact-item,
.contact-grid > .contact-form,
.side-nav,
.cta-inner,
.site-footer {
  text-align: center;
}

/* 双栏布局的左栏，只在左侧分区内部完成上下左右居中。 */
#top .solution-grid > .section-intro,
#top .coverage > .section-intro,
#top .contact > .contact-copy,
.two-col > .sticky-head,
.contact-grid > .contact-details {
  align-self: stretch;
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

#top .hero-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#top :is(.hero-copy, .section-intro, .contact-copy) > :is(p, h1, h2, .contact-lines),
.page-hero :is(p, h1),
.section-heading :is(p, h2),
.section-head.center :is(p, h2),
.sticky-head :is(p, h2),
.cta-inner > div {
  margin-inline: auto;
}

#top :is(.actions, .hero-proof, .insight-filters, .region-chips, .phone-contact) {
  justify-content: center;
}

#top .stat,
#top .service,
#top .insight,
.service-card,
.surface,
.contact-item,
.article-note {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#top #services .service h3 {
  margin: 18px auto 12px;
  text-align: center;
}

#top .service-meta {
  width: 100%;
  margin-top: 18px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
}

#top #services .service-meta span {
  max-width: 100%;
  margin-inline: auto;
  text-align: center;
}

#top #services .service-meta a { flex-basis: auto; }

#top .step { align-items: center; }
#top .step > div { text-align: center; }
#top .step h3 { margin-inline: auto; }
#top .step p { margin-inline: auto; }

#top .case-card figcaption {
  display: flex;
  min-height: 82px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#top .insight h3,
#top .insight :is(p, time, a) { margin-inline: auto; }
#top .insight a { margin-top: 16px; }

#top .faq summary {
  position: relative;
  padding-inline: 46px;
  text-align: center;
}

#top .faq summary::after {
  position: absolute;
  top: 50%;
  right: 10px;
  float: none;
  transform: translateY(-50%);
}

#top .faq p {
  max-width: 70ch;
  margin-inline: auto;
  padding-right: 0;
  text-align: center;
}

#top .contact-form {
  align-content: center;
  justify-items: center;
}

#top .contact-form > :is(label, button, small) { width: 100%; }
#top .contact-form :is(input, textarea) { text-align: center; }

.services,
.contact-details { align-items: stretch; }

.service-card,
.surface { min-height: 220px; }
.service-card :is(h3, p),
.surface :is(h3, p),
.contact-item :is(small, strong),
.article-note,
.side-nav :is(strong, a) { margin-inline: auto; text-align: center; }

.contact-grid > .contact-form {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.contact-grid > .contact-details {
  display: grid;
  align-self: stretch;
  align-content: center;
  justify-content: center;
  justify-items: stretch;
  text-align: center;
}

.contact-grid > .contact-details .wechat-qr {
  justify-self: center;
}

.contact-grid form { width: 100%; }
.contact-grid .form-group { justify-items: center; text-align: center; }
.contact-grid .form-group :is(input, select, textarea) { text-align: center; }
.contact-grid .form-group select { text-align-last: center; }
.contact-grid .form-help { text-align: center; }

.cta-inner {
  justify-content: center;
  text-align: center;
}
.cta-inner > div { text-align: center; }

.site-footer .footer-grid > div,
.site-footer .footer-links {
  justify-items: center;
  text-align: center;
}
.site-footer .brand { justify-content: center; }
.site-footer .footer-grid p { margin-inline: auto; }
.site-footer .footer-bottom { justify-content: center; text-align: center; }

/* 产品页属于配置说明页，模块居中；资讯长文继续保留左对齐阅读。 */
main:has(.flipbook-section) .article { text-align: center; }
main:has(.flipbook-section) .article > div {
  display: flex;
  flex-direction: column;
  align-items: center;
}
main:has(.flipbook-section) .article :is(p, h2, h3, ul, ol, .button) { margin-inline: auto; }
main:has(.flipbook-section) .article :is(ul, ol) {
  padding-left: 0;
  list-style-position: inside;
  text-align: center;
}

@media (max-width: 900px) {
  #top .step {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 12px;
  }
  .cta-inner { align-items: center; }
}

/* v11 · 首页核心入口：浅色玻璃底纹 + 清晰的当前栏目动效。 */
body:has(> main#top) > .site-header nav {
  gap: 8px;
  padding: 6px;
  border: 1px solid rgba(11, 143, 130, .08);
  border-radius: 18px;
  background: rgba(255, 255, 255, .48);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .86);
}

body:has(> main#top) > .site-header nav a:not(.nav-cta) {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-inline: 15px;
  border: 1px solid rgba(11, 143, 130, .09);
  border-radius: 13px;
  background: rgba(11, 143, 130, .055);
  color: #476d69;
  white-space: nowrap;
  transition: color .25s ease, border-color .25s ease, background .25s ease,
    box-shadow .3s ease, transform .25s ease;
}

body:has(> main#top) > .site-header nav a:not(.nav-cta)::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  content: "";
  background: linear-gradient(105deg, transparent 12%, rgba(255, 255, 255, .92) 48%, transparent 82%);
  transform: translateX(-125%);
  transition: transform .58s cubic-bezier(.22, .8, .2, 1);
}

body:has(> main#top) > .site-header nav a:not(.nav-cta)::after {
  position: absolute;
  right: 18%;
  bottom: 4px;
  left: 18%;
  height: 2px;
  border-radius: 99px;
  background: linear-gradient(90deg, transparent, var(--teal), transparent);
  content: "";
  opacity: 0;
  transform: scaleX(.25);
  transition: opacity .25s ease, transform .35s ease;
}

body:has(> main#top) > .site-header nav a:not(.nav-cta):is(:hover, :focus-visible) {
  border-color: rgba(11, 143, 130, .24);
  background: rgba(223, 243, 237, .82);
  color: var(--ink);
  box-shadow: 0 8px 22px rgba(9, 45, 45, .09);
  transform: translateY(-2px);
}

body:has(> main#top) > .site-header nav a:not(.nav-cta):is(:hover, :focus-visible)::before,
body:has(> main#top) > .site-header nav a:not(.nav-cta).is-active::before {
  transform: translateX(125%);
}

body:has(> main#top) > .site-header nav a:not(.nav-cta):active {
  transform: translateY(0) scale(.96);
}

body:has(> main#top) > .site-header nav a:not(.nav-cta).is-active {
  border-color: rgba(11, 143, 130, .34);
  background: linear-gradient(145deg, rgba(223, 243, 237, .96), rgba(255, 255, 255, .78));
  color: var(--teal);
  box-shadow: 0 9px 24px rgba(11, 143, 130, .13), inset 0 1px 0 rgba(255, 255, 255, .92);
  animation: navActiveBreath 2.8s ease-in-out infinite;
}

body:has(> main#top) > .site-header nav a:not(.nav-cta).is-active::after {
  opacity: 1;
  transform: scaleX(1);
}

@keyframes navActiveBreath {
  0%, 100% { box-shadow: 0 8px 20px rgba(11, 143, 130, .11), inset 0 1px 0 rgba(255, 255, 255, .92); }
  50% { box-shadow: 0 11px 28px rgba(11, 143, 130, .2), inset 0 1px 0 rgba(255, 255, 255, .98); }
}

@media (prefers-reduced-motion: reduce) {
  body:has(> main#top) > .site-header nav a:not(.nav-cta) {
    animation: none !important;
    transition-duration: .001ms !important;
  }
}

/* v13 · 首页主视觉标签：文字与承载底纹同步放大。 */
#top .hero-copy > .kicker {
  padding: 10px 18px;
  margin-bottom: 22px;
  font-size: clamp(14px, 1.15vw, 16px);
  line-height: 1.35;
}

@media (max-width: 520px) {
  #top .hero-copy > .kicker {
    max-width: 100%;
    padding: 9px 15px;
    margin-bottom: 18px;
    font-size: 14px;
  }
}

/* v16 · 首页分区引导文字采用统一字号，形成稳定浏览节奏。 */
#top :is(#proof, #services, #solution, #cases, #map, #insights) .section-intro > .kicker {
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.4;
}

@media (max-width: 520px) {
  #top :is(#proof, #services, #solution, #cases, #map, #insights) .section-intro > .kicker {
    font-size: 15px;
  }
}

/* v20 · 资讯板块引导组固定在页面中心轴，筛选与内容列表保持独立。 */
#top #insights > .section-intro {
  display: flex;
  width: min(100%, 820px);
  margin-inline: auto;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

#top #insights > .section-intro > p:not(.kicker) {
  margin-inline: auto;
}

/* v23 · 表单辅助提示保持次级层级，同时达到可读字号与对比度。 */
#top #contact .contact-form > small {
  padding: 8px 12px;
  border: 1px solid rgba(24, 97, 89, .16);
  border-radius: 10px;
  background: rgba(238, 250, 247, .94);
  color: #245b55;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.55;
}

/* v25 · 主视觉方案卡只将核心结论置中，保留编号与交付信息的结构锚点。 */
#top .hero-panel .panel-title {
  width: 100%;
  text-align: center;
}

/* v26 · 联系表单以清晰的浅色面板承载，避免低对比玻璃效果吞没表单文字。 */
#top #contact .contact-form {
  padding: clamp(20px, 2.5vw, 32px);
  border: 1px solid rgba(255, 255, 255, .64);
  border-radius: 24px;
  background: rgba(246, 252, 250, .96);
  box-shadow: 0 22px 50px rgba(0, 0, 0, .2), inset 0 1px 0 rgba(255, 255, 255, .96);
}

#top #contact .contact-form > label {
  gap: 8px;
  color: #164f49;
  font-size: 14px;
  font-weight: 750;
  line-height: 1.45;
}

#top #contact .contact-form :is(input, textarea) {
  border: 1px solid rgba(11, 143, 130, .28);
  background: rgba(255, 255, 255, .98);
  color: #092d2d;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .98), 0 5px 14px rgba(9, 45, 45, .08);
}

#top #contact .contact-form :is(input, textarea)::placeholder {
  color: #4d7772;
  opacity: 1;
}

#top #contact .contact-form :is(input, textarea):hover {
  border-color: rgba(11, 143, 130, .56);
}

#top #contact .contact-form :is(input, textarea):focus {
  border-color: #0b8f82;
  outline: 3px solid rgba(11, 143, 130, .25);
  outline-offset: 2px;
}

/* v27 · 资讯筛选的空栏目保持明确反馈，而非留下无内容的空白区域。 */
#top #insights .insight-empty {
  grid-column: 1 / -1;
  align-self: start;
  width: min(100%, 820px);
  min-height: 0;
  margin: 0 auto;
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid rgba(11, 143, 130, .2);
  border-radius: 16px;
  background: rgba(255, 255, 255, .72);
  color: #456a66;
  text-align: center;
}

#top #insights .insight-empty > span {
  display: block;
  color: var(--teal);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .08em;
}

#top #insights .insight-empty h3 {
  margin: 10px auto 12px;
  color: #073b37;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.25;
}

#top #insights .insight-empty p {
  max-width: 42ch;
  margin: 0 auto 20px;
  color: #456a66;
  font-size: 15px;
  line-height: 1.7;
}

#top #insights .insight-inner-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

#top #insights .insight-inner-links a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 8px 15px;
  border: 1px solid rgba(11, 143, 130, .24);
  border-radius: 999px;
  background: rgba(255, 255, 255, .82);
  color: #087f75;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  transition: transform .2s ease, background-color .2s ease, color .2s ease;
}

#top #insights .insight-inner-links a:hover,
#top #insights .insight-inner-links a:focus-visible {
  transform: translateY(-2px);
  background: #0b8f82;
  color: #fff;
}

#top #insights .insight-filter-status {
  margin: -6px auto 20px;
  color: #245b55;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
  text-align: center;
}

/* v33 · 筛选状态必须压过卡片的通用 flex 布局，避免非当前栏目继续显示。 */
#top #insights .insight[data-hidden="true"] {
  display: none !important;
}

#top #insights .insight-empty[hidden] {
  display: none !important;
}

/* 首页只保留最新资讯，完整归档统一进入资讯页浏览。 */
#top #insights .insight-archive-action {
  display: flex;
  justify-content: center;
  margin: 28px 0 0;
}

#top #insights .insight[hidden],
#top #insights .insight:nth-of-type(n+10) {
  display: none !important;
}

/* 深色页脚（#062323）内的品牌名：.brand 默认继承 --ink(#092d2d)，对比度仅 1.12:1，几乎不可见。 */
.site-footer .brand,
.site-footer .brand strong { color: #fff; }
.site-footer .brand small { color: #8eb5ae; }