/* 多页版补充样式：在 site.css（单页版）基础上增加导航、子页首屏、卡片、流程、页脚等组件 */

/* 导航：当前页、手机菜单 */
.site-nav a[aria-current="page"]:not(.nav-cta) { color: #fff; }
.site-nav a[aria-current="page"]:not(.nav-cta)::after { content: ""; display: block; height: 1px; margin-top: 4px; background: var(--grad); }
.site-nav .nav-cta[aria-current="page"] { border-color: rgba(255,255,255,.6); }
.nav-toggle { display: none; position: relative; width: 40px; height: 40px; margin-right: -8px; border: 0; background: none; cursor: pointer; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { position: absolute; left: 10px; width: 20px; height: 1.5px; background: #fff; transition: transform .3s, opacity .3s; }
.nav-toggle span { top: 19px; }
.nav-toggle span::before, .nav-toggle span::after { content: ""; left: 0; }
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-open .nav-toggle span { background: transparent; }
.nav-open .nav-toggle span::before { transform: translateY(6px) rotate(45deg); }
.nav-open .nav-toggle span::after { transform: translateY(-6px) rotate(-45deg); }

/* 子页首屏 */
.page-hero {
  position: relative; overflow: hidden; padding: 190px 0 110px; isolation: isolate;
  background: radial-gradient(1000px 620px at 80% 20%, #13254a 0%, rgba(19,37,74,0) 70%), var(--night);
}
.page-hero::after { content: ""; position: absolute; inset: auto 0 0; height: 120px; background: linear-gradient(transparent, var(--night)); z-index: -1; pointer-events: none; }
.page-hero-media {
  position: absolute; z-index: -2; top: 0; right: 0; width: 58%; height: 100%; object-fit: cover; opacity: .55;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 45%), linear-gradient(transparent 0%, #000 25%, #000 70%, transparent 100%);
  -webkit-mask-composite: source-in; mask-image: linear-gradient(90deg, transparent 0%, #000 45%), linear-gradient(transparent 0%, #000 25%, #000 70%, transparent 100%); mask-composite: intersect;
}
.page-hero-media.dim { opacity: .4; filter: saturate(.85); }
.crumbs { font-size: 13px; color: var(--text-3); letter-spacing: .06em; margin-bottom: 30px; }
.crumbs a { color: var(--text-2); }
.crumbs a:hover { color: #fff; }
.crumbs a::after { content: "/"; margin: 0 10px; color: var(--text-3); }
.page-hero h1 { font-size: clamp(36px, 5vw, 64px); line-height: 1.18; margin: 20px 0 26px; max-width: 14em; }
.page-hero .lead { font-size: clamp(16px, 1.4vw, 19px); color: var(--text-2); max-width: 36em; font-weight: 300; letter-spacing: .03em; }
.page-hero .status { margin-top: 28px; }

/* 区块 */
.section.tight { padding: 110px 0; }
.section.band { background: linear-gradient(180deg, var(--night) 0%, var(--night-2) 15%, var(--night-2) 85%, var(--night) 100%); }
.section-head .lead2 { margin-top: 22px; color: var(--text-2); max-width: 40em; }
.section-head.center { text-align: center; }
.section-head.center .lead2 { margin-left: auto; margin-right: auto; }
.h2 { font-size: clamp(26px, 2.8vw, 38px); line-height: 1.3; font-weight: 600; margin: 16px 0 24px; }
.body { color: var(--text-2); }
.body + .body { margin-top: 16px; }
.note { margin-top: 24px; font-size: 13px; color: var(--text-3); line-height: 1.8; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 88px; align-items: center; }
.split.media-l > .frame { order: -1; }
.split.top { align-items: start; }

/* 图框（沿用样品图融合背景的手法） */
.frame { position: relative; border-radius: 24px; overflow: hidden; border: 1px solid var(--line); background: radial-gradient(120% 90% at 50% 30%, #13233f 0%, var(--night-2) 70%); }
.frame img { width: 100%; }
.frame.contain { padding: 28px; }
.frame.black { background: radial-gradient(90% 80% at 45% 45%, #0d0d0f 0%, #020203 75%); }
.frame.portrait { max-width: 400px; margin: 0 auto; }
.frame figcaption { position: absolute; left: 16px; bottom: 14px; font-size: 12px; letter-spacing: .08em; color: rgba(255,255,255,.82); padding: 5px 12px; border-radius: 999px; background: rgba(7,13,24,.55); border: 1px solid rgba(255,255,255,.14); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); }
.frame-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* 要点列表 */
.bullets { list-style: none; margin: 0; padding: 0; }
.bullets li { position: relative; padding: 16px 0 16px 28px; border-bottom: 1px solid var(--line); color: var(--text-2); }
.bullets li:first-child { border-top: 1px solid var(--line); }
.bullets li::before { content: ""; position: absolute; left: 0; top: 30px; width: 14px; height: 1px; background: var(--grad); }
.bullets b { color: var(--text); font-weight: 500; }

/* 卡片 */
.cards { display: grid; gap: 20px; }
.cards.c2 { grid-template-columns: repeat(2, 1fr); }
.cards.c3 { grid-template-columns: repeat(3, 1fr); }
.cards.c4 { grid-template-columns: repeat(4, 1fr); }
.card { position: relative; padding: 34px 30px 32px; border-radius: 20px; border: 1px solid var(--line); background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.01)); transition: border-color .3s, transform .3s; }
.card:hover { border-color: rgba(255,255,255,.18); }
.card .icon { width: 44px; height: 44px; padding: 8px; border-radius: 12px; background: rgba(255,255,255,.04); border: 1px solid var(--line); margin-bottom: 22px; }
.card .num-i { font-size: 12px; color: var(--text-3); letter-spacing: .16em; display: block; margin-bottom: 18px; }
.card h3 { font-size: 19px; font-weight: 500; margin-bottom: 10px; }
.card p { color: var(--text-2); font-size: 15px; }
.card .chip { display: inline-block; font-size: 12px; letter-spacing: .1em; color: var(--accent-hi); margin-bottom: 14px; }

/* 产品卡（产品总览、首页） */
.pcards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pcard { display: flex; flex-direction: column; border-radius: 24px; overflow: hidden; border: 1px solid var(--line); background: var(--night-2); transition: border-color .3s, transform .4s cubic-bezier(.2,.7,.2,1); }
.pcard:hover { border-color: rgba(255,255,255,.2); transform: translateY(-4px); }
.pcard-media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: radial-gradient(120% 90% at 50% 30%, #13233f 0%, var(--night-2) 70%); }
.pcard-media img { width: 100%; height: 100%; object-fit: cover; -webkit-mask-image: linear-gradient(#000 60%, transparent); mask-image: linear-gradient(#000 60%, transparent); transition: transform 1.4s cubic-bezier(.2,.7,.2,1); }
.pcard:hover .pcard-media img { transform: scale(1.04); }
.pcard-media.black { background: #020203; }
.pcard-media.black img { object-fit: contain; padding: 8% 14%; }
.pcard-body { padding: 4px 30px 32px; display: flex; flex-direction: column; flex: 1; }
.pcard .label { margin-bottom: 12px; }
.pcard h3 { font-size: 22px; line-height: 1.35; margin-bottom: 12px; }
.pcard p { color: var(--text-2); font-size: 15px; flex: 1; }
.pcard .link-arrow { margin-top: 24px; font-size: 14px; }

/* 指标 */
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.metrics > div { padding: 30px 28px 0 0; }
.metrics > div + div { padding-left: 32px; border-left: 1px solid var(--line); }
.metrics dt { font-size: clamp(30px, 3.4vw, 46px); font-weight: 300; line-height: 1.1; color: #fff; white-space: nowrap; }
.metrics dt small { font-size: .45em; margin-left: 4px; color: var(--text-2); }
.metrics dd { margin: 12px 0 0; font-size: 14px; color: var(--text-2); }
.metrics.one { grid-template-columns: 1fr; border-top: 0; }
.metrics.one > div { padding: 0; }

/* 流程 */
.flow { list-style: none; margin: 0; padding: 0; display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; counter-reset: s; border-top: 1px solid var(--line); }
.flow li { counter-increment: s; position: relative; padding: 34px 24px 0 0; }
.flow li::before { content: "0" counter(s); display: block; font-size: 13px; letter-spacing: .16em; color: var(--accent-hi); margin-bottom: 16px; }
.flow li::after { content: ""; position: absolute; top: -4px; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--night); border: 1px solid var(--accent-hi); }
.flow h3 { font-size: 18px; font-weight: 500; margin-bottom: 8px; }
.flow p { color: var(--text-2); font-size: 14px; }
.flow.vertical { grid-auto-flow: row; border-top: 0; }
.flow.vertical li { padding: 0 0 26px 30px; border-left: 1px solid var(--line); }
.flow.vertical li::before { display: inline; margin: 0 12px 0 0; }
.flow.vertical li::after { top: 8px; left: -4px; }
.flow.vertical h3 { display: inline; }
.flow.vertical p { margin-top: 6px; }

/* 号召区 */
.cta-band { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; padding: 56px 60px; border-radius: 28px; overflow: hidden; background: radial-gradient(700px 300px at 10% 0%, #17305e 0%, rgba(23,48,94,0) 70%), var(--night-2); border: 1px solid var(--line); }
.cta-band::before { content: ""; position: absolute; inset: 0 0 auto; height: 1px; background: var(--grad); opacity: .7; }
.cta-band h2 { font-size: clamp(24px, 2.6vw, 34px); line-height: 1.35; }
.cta-band p { margin-top: 10px; color: var(--text-2); }

/* 动态 */
.news-list { border-top: 1px solid var(--line); }
.news-item { display: grid; grid-template-columns: 300px 1fr; gap: 48px; align-items: center; padding: 36px 0; border-bottom: 1px solid var(--line); }
.news-item img { border-radius: 16px; aspect-ratio: 3 / 2; object-fit: cover; width: 100%; filter: saturate(.9); transition: filter .3s; }
.news-item:hover img { filter: none; }
.news-item time { font-size: 13px; color: var(--text-3); letter-spacing: .1em; }
.news-item h3 { font-size: 21px; line-height: 1.5; margin: 10px 0 10px; font-weight: 500; }
.news-item h3 a:hover { color: var(--accent-hi); }
.news-item p { color: var(--text-2); font-size: 15px; }
.news-mini { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-mini a { display: block; }
.news-mini img { border-radius: 16px; aspect-ratio: 3 / 2; object-fit: cover; width: 100%; margin-bottom: 18px; filter: saturate(.9); }
.news-mini time { font-size: 12px; color: var(--text-3); letter-spacing: .1em; }
.news-mini h3 { font-size: 17px; line-height: 1.55; font-weight: 500; margin-top: 6px; }
.news-mini a:hover h3 { color: var(--accent-hi); }

/* 关于 */
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.partners { display: flex; flex-wrap: wrap; gap: 12px; }
.partners span { padding: 12px 22px; border-radius: 999px; border: 1px solid var(--line); background: rgba(255,255,255,.03); font-size: 15px; letter-spacing: .04em; }

/* 联系 */
.contact-card { padding: 40px 40px 36px; border-radius: 24px; border: 1px solid var(--line); background: var(--night-2); }
.contact-card .contact-info p:last-of-type { border-bottom: 0; }

/* 页脚 */
.site-footer.multi { background: var(--night-2); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; padding: 64px 32px 48px; }
.footer-brand img { height: 36px; width: auto; }
.footer-brand p { margin-top: 18px; color: var(--text-3); font-size: 13px; }
.footer-col h4 { margin: 0 0 16px; font-size: 13px; font-weight: 500; color: var(--text); letter-spacing: .1em; }
.footer-col a, .footer-col span { display: block; font-size: 13px; color: var(--text-3); line-height: 2.1; }
.footer-col a:hover { color: var(--text-2); }
.site-footer.multi .footer-inner { border-top: 1px solid var(--line); }

/* 平板 */
@media (max-width: 1000px) {
  .split { grid-template-columns: 1fr; gap: 48px; }
  .split.media-l > .frame { order: 0; }
  .cards.c3, .cards.c4, .pcards, .facts { grid-template-columns: 1fr 1fr; }
  .news-mini { grid-template-columns: 1fr 1fr; }
  .news-mini a:nth-child(3) { display: none; }
  .flow { grid-auto-flow: row; grid-template-columns: 1fr 1fr; border-top: 0; gap: 0 24px; }
  .flow li { border-top: 1px solid var(--line); padding-bottom: 28px; }
  .flow:not(.vertical) li::after { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .page-hero-media { width: 80%; opacity: .35; }
}
/* 手机 */
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .site-nav { position: absolute; top: 100%; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 22px 22px; background: var(--night); border-bottom: 1px solid var(--line); }
  .nav-open .site-nav { display: flex; }
  .nav-open.site-header { background: var(--night); }
  .site-nav a, .site-nav a:not(.nav-cta) { display: block; padding: 14px 0; font-size: 16px; border-bottom: 1px solid var(--line); }
  .site-nav a[aria-current="page"]:not(.nav-cta)::after { display: none; }
  .site-nav .nav-cta { margin-top: 18px; text-align: center; border-bottom: 1px solid rgba(255,255,255,.22); }
  .site-nav a.nav-old { display: block; border-left: 0; padding-left: 0; margin-left: 0; font-size: 16px; }
}
@media (max-width: 640px) {
  .page-hero { padding: 130px 0 64px; }
  .page-hero-media { width: 100%; opacity: .25; }
  .crumbs { margin-bottom: 20px; }
  .section.tight { padding: 80px 0; }
  .cards.c2, .cards.c3, .cards.c4, .pcards, .facts, .news-mini { grid-template-columns: 1fr; }
  .news-mini a:nth-child(3) { display: block; }
  .card { padding: 28px 24px; }
  .metrics { grid-template-columns: 1fr; }
  .metrics > div, .metrics > div + div { padding: 22px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .flow { grid-template-columns: 1fr; }
  .cta-band { padding: 40px 26px; }
  .news-item { grid-template-columns: 1fr; gap: 20px; padding: 28px 0; }
  .frame-pair { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; padding: 48px 22px 32px; }
  .contact-card { padding: 28px 24px; }
}

/* 首页与技术区的“了解详情”链接 */
.product-text .more, .tech .more { display: inline-block; margin-top: 32px; font-size: 14px; }
.page-hero .hero-canvas { z-index: -1; }
.page-hero.tall { min-height: min(80vh, 760px); display: flex; flex-direction: column; justify-content: center; }
.page-hero.tall > .wrap { width: 100%; }