:root {
  --blue: #063a77;
  --blue-deep: #052a54;
  --blue-soft: #dbeaf5;
  --ice: #f2f6f8;
  --paper: #fbfaf7;
  --ink: #102638;
  --muted: #5b6d7b;
  --line: #d9e1e6;
  --orange: #e7682b;
  --orange-deep: #c84c13;
  --forest: #245c4a;
  --white: #fff;
  --shadow: 0 20px 55px rgba(5, 42, 84, .12);
  --shell: min(1180px, calc(100% - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif; font-size: 16px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
body.modal-open { overflow: hidden; }
img { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { color: inherit; }
.shell { width: var(--shell); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 1000; top: 12px; left: 12px; padding: 9px 14px; color: #fff; background: var(--blue); transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.site-header { position: absolute; z-index: 60; top: 0; left: 0; width: 100%; height: 82px; color: #fff; border-bottom: 1px solid rgba(255,255,255,.16); transition: background .25s, box-shadow .25s; }
.site-header.is-scrolled, .site-header.nav-open { position: fixed; color: var(--ink); background: rgba(255,255,255,.96); box-shadow: 0 10px 30px rgba(3,35,66,.1); backdrop-filter: blur(16px); }
.nav-wrap { height: 100%; display: flex; align-items: center; gap: 34px; }
.brand { display: flex; align-items: center; gap: 11px; margin-right: auto; }
.brand-mark { width: 116px; height: auto; filter: brightness(0) invert(1); }
.site-header.is-scrolled .brand-mark, .site-header.nav-open .brand-mark, .brand--footer .brand-mark { filter: none; }
.brand-copy { display: grid; line-height: 1.1; }
.brand-copy strong { font-size: .9rem; letter-spacing: .16em; }
.brand-copy small { margin-top: 4px; font-size: .6rem; letter-spacing: .18em; opacity: .72; }
.main-nav { display: flex; align-items: center; gap: 27px; }
.main-nav a { position: relative; padding: 26px 0; font-size: .8rem; font-weight: 650; }
.main-nav a::after { content: ""; position: absolute; right: 0; bottom: 18px; left: 0; height: 2px; background: currentColor; transform: scaleX(0); transition: transform .2s; }
.main-nav a:hover::after, .main-nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav-toggle { display: none; width: 42px; height: 42px; padding: 10px; background: transparent; border: 0; color: inherit; }
.nav-toggle span { display: block; height: 2px; margin: 5px 0; background: currentColor; }

.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 20px; font-weight: 750; font-size: .82rem; border: 1px solid transparent; border-radius: 2px; cursor: pointer; transition: transform .2s, background .2s, color .2s, border-color .2s; }
.button:hover { transform: translateY(-2px); }
.button--orange { color: #fff; background: var(--orange); }
.button--orange:hover { background: var(--orange-deep); }
.button--light { color: var(--blue); background: #fff; }
.site-header.is-scrolled .button--light, .site-header.nav-open .button--light { color: #fff; background: var(--blue); }
.button--outline { color: var(--blue); background: transparent; border-color: var(--blue); }
.button--ghost { color: #fff; background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.55); }
.button--full { width: 100%; }
.header-cta { min-height: 40px; padding: 8px 15px; white-space: nowrap; }

.hero { position: relative; min-height: 650px; display: flex; align-items: flex-end; overflow: hidden; color: #fff; background: var(--blue-deep); }
.hero > picture, .hero > picture img, .hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(1,20,40,.91) 0%, rgba(1,25,50,.64) 48%, rgba(1,25,50,.18) 100%), linear-gradient(0deg, rgba(2,25,48,.65), transparent 45%); }
.hero-content { position: relative; z-index: 2; max-width: 820px; padding: 168px 0 92px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 34px; color: rgba(255,255,255,.68); font-size: .72rem; }
.breadcrumbs a:hover { color: #fff; }
.eyebrow { margin: 0 0 12px; color: var(--blue); font-size: .69rem; font-weight: 800; letter-spacing: .17em; text-transform: uppercase; }
.eyebrow--light { color: rgba(255,255,255,.72); }
.hero h1 { max-width: 780px; margin: 0 0 22px; font-family: "STSong", "SimSun", serif; font-size: clamp(3.2rem, 6.5vw, 6.4rem); font-weight: 600; line-height: 1.06; letter-spacing: -.045em; }
.hero--spring h1 { max-width: 690px; font-size: clamp(3rem, 5.7vw, 5.6rem); }
.hero-lead { max-width: 690px; margin: 0 0 30px; color: rgba(255,255,255,.84); font-size: 1rem; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 22px; color: rgba(255,255,255,.65); font-size: .72rem; }

.proof-strip { color: #fff; background: var(--blue); }
.proof-grid { min-height: 104px; display: grid; grid-template-columns: repeat(4, 1fr); }
.proof-grid div { display: grid; align-content: center; padding: 20px 30px; border-right: 1px solid rgba(255,255,255,.15); }
.proof-grid div:last-child { border: 0; }
.proof-grid strong { font-family: "STSong", "SimSun", serif; font-size: 1.2rem; }
.proof-grid span { color: rgba(255,255,255,.66); font-size: .7rem; }

.section { padding: 96px 0; }
.section--ice { background: var(--ice); }
.section--white { background: #fff; }
.section-head { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); gap: 50px; align-items: end; margin-bottom: 42px; }
.section-head h2, .content-title { margin: 0; color: var(--blue-deep); font-family: "STSong", "SimSun", serif; font-size: clamp(2.2rem, 4vw, 3.8rem); font-weight: 600; line-height: 1.18; }
.section-head > p { margin: 0; color: var(--muted); }

.featured-grid { display: grid; grid-template-columns: 1.35fr .85fr .85fr; gap: 18px; }
.feature-card { position: relative; min-height: 430px; display: flex; align-items: flex-end; overflow: hidden; color: #fff; background: var(--blue-deep); }
.feature-card:first-child { min-height: 540px; }
.feature-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.feature-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(2,25,49,.94), rgba(2,25,49,.08) 72%); }
.feature-card:hover img { transform: scale(1.035); }
.feature-copy { position: relative; z-index: 1; padding: 30px; }
.feature-copy small { display: inline-block; margin-bottom: 12px; color: #fff; font-size: .65rem; font-weight: 800; letter-spacing: .13em; }
.feature-copy h3 { margin: 0 0 10px; font-family: "STSong", "SimSun", serif; font-size: 1.65rem; line-height: 1.35; }
.feature-card:first-child h3 { font-size: 2.25rem; }
.feature-copy p { margin: 0; color: rgba(255,255,255,.73); font-size: .8rem; }

.topic-nav { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; }
.topic-nav a { padding: 10px 15px; color: var(--blue); background: #fff; border: 1px solid var(--line); font-size: .75rem; font-weight: 700; transition: border .2s, background .2s; }
.topic-nav a:hover { color: #fff; background: var(--blue); border-color: var(--blue); }
.library-tools { display: flex; justify-content: space-between; gap: 18px; margin-bottom: 34px; }
.filter-group { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-button { padding: 9px 15px; color: var(--muted); background: transparent; border: 1px solid var(--line); cursor: pointer; font-size: .75rem; font-weight: 700; }
.filter-button.is-active { color: #fff; background: var(--blue); border-color: var(--blue); }
.search-wrap { position: relative; width: min(340px, 100%); }
.search-wrap input { width: 100%; height: 43px; padding: 9px 42px 9px 14px; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 0; }
.search-wrap input:focus { outline: 3px solid rgba(6,58,119,.1); border-color: var(--blue); }
.search-wrap::after { content: "⌕"; position: absolute; top: 4px; right: 14px; color: var(--blue); font-size: 1.35rem; }
.article-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.article-card { display: flex; flex-direction: column; min-width: 0; background: #fff; border: 1px solid var(--line); transition: transform .25s, box-shadow .25s, border-color .25s; }
.article-card:hover { transform: translateY(-5px); border-color: transparent; box-shadow: var(--shadow); }
.article-card[hidden] { display: none; }
.card-image { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--blue-soft); }
.card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.article-card:hover .card-image img { transform: scale(1.035); }
.card-label { position: absolute; left: 14px; bottom: 14px; padding: 5px 9px; color: #fff; background: rgba(5,42,84,.9); font-size: .62rem; font-weight: 750; }
.card-body { flex: 1; display: flex; flex-direction: column; padding: 24px; }
.card-meta { display: flex; gap: 10px; align-items: center; margin: 0 0 10px; color: var(--muted); font-size: .65rem; }
.card-meta span + span::before { content: "·"; margin-right: 10px; }
.card-body h3 { margin: 0 0 10px; color: var(--blue-deep); font-family: "STSong", "SimSun", serif; font-size: 1.35rem; line-height: 1.4; }
.card-body > p { flex: 1; margin: 0 0 18px; color: var(--muted); font-size: .78rem; }
.read-more { color: var(--blue); font-size: .75rem; font-weight: 800; }
.empty-state { margin: 35px 0 0; padding: 28px; color: var(--muted); text-align: center; background: #fff; border: 1px dashed var(--line); }

.guide-panel { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: start; }
.guide-toc { position: sticky; top: 120px; padding: 28px; background: var(--ice); border-top: 4px solid var(--orange); }
.guide-toc strong { display: block; margin-bottom: 15px; color: var(--blue-deep); font-family: "STSong", "SimSun", serif; font-size: 1.35rem; }
.guide-toc a { display: block; padding: 9px 0; color: var(--muted); border-top: 1px solid var(--line); font-size: .78rem; }
.guide-toc a:hover { color: var(--blue); }
.guide-article { min-width: 0; }
.article-intro { margin: 0 0 42px; color: #344d61; font-family: "STSong", "SimSun", serif; font-size: 1.25rem; line-height: 1.9; }
.content-section { margin-bottom: 56px; }
.content-section h2 { margin: 0 0 18px; color: var(--blue-deep); font-family: "STSong", "SimSun", serif; font-size: 2.25rem; font-weight: 600; line-height: 1.35; }
.content-section h3 { margin: 28px 0 10px; color: var(--blue); font-size: 1.05rem; }
.content-section p { margin: 0 0 18px; color: var(--muted); }
.content-section ul { padding-left: 20px; color: var(--muted); }
.content-section li { margin-bottom: 10px; }
.place-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 26px; }
.place-card { padding: 25px; background: #fff; border: 1px solid var(--line); }
.place-card span { color: var(--orange); font: 800 .65rem Arial, sans-serif; letter-spacing: .1em; }
.place-card h3 { margin: 5px 0 8px; color: var(--blue-deep); font-family: "STSong", "SimSun", serif; font-size: 1.35rem; }
.place-card p { margin: 0; font-size: .78rem; }
.photo-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; grid-template-rows: repeat(2, 210px); gap: 10px; margin: 34px 0 52px; }
.photo-grid figure { margin: 0; overflow: hidden; background: var(--blue-soft); }
.photo-grid figure:first-child { grid-row: 1 / 3; }
.photo-grid img { width: 100%; height: 100%; object-fit: cover; }
.note { margin: 28px 0; padding: 22px 24px; color: #5f5138; background: #fff7df; border-left: 4px solid #c69232; font-size: .82rem; }
.map-figure { margin: 28px 0 0; padding: 20px; background: #fff; border: 1px solid var(--line); }
.map-figure img { display: block; width: 100%; height: auto; }
.map-figure figcaption { margin-top: 10px; color: var(--muted); font-size: .68rem; }

.original-article { width: min(920px, 100%); margin-inline: auto; }
.original-article__meta { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 0 0 42px; padding-bottom: 18px; color: var(--muted); border-bottom: 1px solid var(--line); font-size: .72rem; }
.original-copy { margin-bottom: 44px; }
.original-copy h2, .original-copy h3, .original-copy h4 { margin: 0 0 18px; color: var(--blue-deep); font-family: "STSong", "SimSun", serif; font-weight: 600; line-height: 1.35; }
.original-copy h3 { font-size: clamp(2rem, 3.5vw, 2.8rem); }
.original-copy h4 { font-size: clamp(1.55rem, 2.8vw, 2.1rem); }
.original-copy p { margin: 0 0 18px; color: #40576a; font-size: .98rem; line-height: 2.05; }
.original-gallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 28px 0 64px; }
.original-gallery--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.original-gallery--five { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.gallery-button { position: relative; min-width: 0; aspect-ratio: 4 / 3; overflow: hidden; padding: 0; background: var(--blue-soft); border: 0; cursor: zoom-in; }
.gallery-button::after { content: "点击放大"; position: absolute; right: 10px; bottom: 10px; padding: 5px 8px; color: #fff; background: rgba(3,28,53,.78); opacity: 0; transform: translateY(5px); transition: opacity .2s, transform .2s; font-size: .63rem; font-weight: 700; }
.gallery-button:hover::after, .gallery-button:focus-visible::after { opacity: 1; transform: none; }
.gallery-button:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }
.gallery-button img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .45s; }
.gallery-button:hover img { transform: scale(1.035); }
.original-detail-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 36px; align-items: center; margin-top: 20px; padding: 34px; background: var(--ice); }
.original-detail-grid h3 { margin: 0 0 18px; color: var(--blue-deep); font-family: "STSong", "SimSun", serif; font-size: 1.8rem; line-height: 1.45; }
.original-detail-grid ul { margin: 0 0 30px; padding: 0; list-style: none; color: #40576a; }
.original-detail-grid li { position: relative; padding: 7px 0 7px 22px; }
.original-detail-grid li::before { content: "•"; position: absolute; left: 3px; color: var(--orange); }
.original-detail-grid h2 { margin: 0; color: var(--blue); font-family: "STSong", "SimSun", serif; font-size: 2rem; line-height: 1.4; }
.map-zoom { width: 100%; min-height: 460px; }
.map-zoom img { object-fit: contain; background: #fff; }
.related-original { padding-top: 28px; border-top: 1px solid var(--line); }
.related-original h2 { margin: 0 0 28px; color: var(--blue-deep); font-family: "STSong", "SimSun", serif; font-size: 2rem; }
.related-original-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }

.image-lightbox[hidden] { display: none; }
.image-lightbox { position: fixed; z-index: 260; inset: 0; display: grid; place-items: center; padding: 24px 72px; }
.image-lightbox__backdrop { position: absolute; inset: 0; width: 100%; height: 100%; padding: 0; background: rgba(1,13,26,.94); border: 0; cursor: zoom-out; }
.image-lightbox__stage { position: relative; z-index: 1; max-width: 100%; max-height: 100%; display: grid; place-items: center; }
.image-lightbox__image { display: block; max-width: min(92vw, 1500px); max-height: 84vh; width: auto; height: auto; object-fit: contain; box-shadow: 0 25px 90px rgba(0,0,0,.45); }
.image-lightbox__close, .image-lightbox__prev, .image-lightbox__next { position: absolute; z-index: 2; display: grid; place-items: center; color: #fff; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.32); border-radius: 50%; cursor: pointer; }
.image-lightbox__close { top: 18px; right: 20px; width: 46px; height: 46px; font-size: 1.7rem; }
.image-lightbox__prev, .image-lightbox__next { top: 50%; width: 48px; height: 48px; transform: translateY(-50%); font-size: 1.55rem; }
.image-lightbox__prev { left: 18px; }
.image-lightbox__next { right: 18px; }
.image-lightbox__caption { position: fixed; z-index: 2; right: 72px; bottom: 18px; left: 72px; margin: 0; color: rgba(255,255,255,.72); text-align: center; font-size: .75rem; }

.faq-layout { display: grid; grid-template-columns: .65fr 1.35fr; gap: 70px; }
.faq-intro { position: sticky; top: 120px; align-self: start; }
.faq-intro h2 { margin: 0 0 16px; color: var(--blue-deep); font-family: "STSong", "SimSun", serif; font-size: 3rem; font-weight: 600; }
.faq-intro p { color: var(--muted); }
.accordion details { background: #fff; border-top: 1px solid var(--line); }
.accordion details:last-child { border-bottom: 1px solid var(--line); }
.accordion summary { list-style: none; display: flex; justify-content: space-between; gap: 20px; padding: 21px 0; cursor: pointer; color: var(--blue-deep); font-weight: 750; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { content: "+"; color: var(--blue); font-size: 1.2rem; }
.accordion details[open] summary::after { content: "−"; }
.accordion details p { margin: 0; padding: 0 30px 24px 0; color: var(--muted); font-size: .82rem; }

.final-cta { position: relative; min-height: 470px; display: flex; align-items: center; overflow: hidden; color: #fff; background: var(--blue-deep); }
.final-cta > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.final-cta::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(2,25,49,.92), rgba(2,25,49,.28)); }
.final-cta-content { position: relative; z-index: 1; }
.final-cta h2 { max-width: 700px; margin: 0 0 15px; font-family: "STSong", "SimSun", serif; font-size: clamp(2.6rem, 5vw, 4.8rem); line-height: 1.16; }
.final-cta p:not(.eyebrow) { max-width: 620px; margin: 0 0 26px; color: rgba(255,255,255,.75); }
.final-cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.site-footer { padding: 64px 0 28px; color: #fff; background: #031c35; }
.footer-grid { display: grid; grid-template-columns: 1.3fr repeat(3, .7fr); gap: 45px; }
.brand--footer { display: inline-flex; margin-bottom: 15px; }
.brand--footer .brand-mark { width: 120px; filter: brightness(0) invert(1); }
.footer-grid p, .footer-grid span, .footer-grid a { display: block; margin: 6px 0; color: rgba(255,255,255,.62); font-size: .74rem; }
.footer-grid a:hover { color: #fff; }
.footer-grid b { display: block; margin-bottom: 14px; font-size: .75rem; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 46px; padding-top: 20px; color: rgba(255,255,255,.42); border-top: 1px solid rgba(255,255,255,.12); font-size: .68rem; }

.mobile-cta { display: none; }
.modal[hidden], .toast[hidden], .lead-feedback[hidden] { display: none; }
.modal { position: fixed; z-index: 200; inset: 0; display: grid; place-items: center; padding: 20px; }
.modal-backdrop { position: absolute; inset: 0; width: 100%; height: 100%; padding: 0; background: rgba(1,16,31,.8); border: 0; cursor: pointer; }
.modal-card { position: relative; z-index: 1; width: min(460px, 100%); max-height: calc(100dvh - 40px); overflow-y: auto; padding: 36px; background: #fff; box-shadow: 0 30px 100px rgba(0,0,0,.35); }
.modal-card h2 { margin: 0 0 18px; color: var(--blue-deep); font-family: "STSong", "SimSun", serif; font-size: 1.85rem; line-height: 1.35; }
.modal-close { position: absolute; top: 10px; right: 13px; width: 36px; height: 36px; padding: 0; color: var(--muted); background: transparent; border: 0; font-size: 1.55rem; cursor: pointer; }
.qr-placeholder { aspect-ratio: 1; width: min(240px, 72vw); margin: 0 auto 20px; padding: 7px; background: #fff; outline: 1px solid var(--line); }
.qr-placeholder img { width: 100%; height: 100%; object-fit: cover; }
.wechat-id { display: grid; grid-template-columns: auto 1fr auto; gap: 10px; align-items: center; padding: 12px; background: var(--ice); }
.wechat-id + .wechat-id { margin-top: 10px; }
.wechat-id span { color: var(--muted); font-size: .7rem; }
.wechat-id strong { color: var(--blue); font-size: .83rem; }
.wechat-id button { padding: 5px 8px; color: #fff; background: var(--blue); border: 0; cursor: pointer; font-size: .68rem; }
.modal-note { margin: 15px 0 0; color: var(--muted); text-align: center; font-size: .75rem; }
.lead-card { width: min(720px, 100%); border-top: 3px solid var(--orange); }
.lead-description { margin: -7px 0 22px; color: var(--muted); font-size: .82rem; }
.lead-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px; }
.lead-field { display: grid; gap: 7px; min-width: 0; }
.lead-field--full { grid-column: 1 / -1; }
.lead-field > span { font-size: .78rem; font-weight: 700; }
.lead-field i { color: var(--orange); font-style: normal; }
.lead-field small { color: var(--muted); font-weight: 400; }
.lead-field input, .lead-field textarea { width: 100%; min-width: 0; padding: 11px 13px; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 0; font-size: 16px; }
.lead-field input { height: 47px; }
.lead-field textarea { min-height: 90px; resize: vertical; }
.lead-field input:focus, .lead-field textarea:focus { outline: 3px solid rgba(6,58,119,.09); border-color: var(--blue); }
.lead-consent { display: flex; gap: 9px; align-items: flex-start; margin: 18px 0; color: var(--muted); font-size: .72rem; }
.lead-consent input { flex: 0 0 auto; width: 18px; height: 18px; margin-top: 2px; accent-color: var(--blue); }
.lead-preview-note { margin: 9px 0 0; color: var(--muted); text-align: center; font-size: .68rem; }
.lead-feedback { margin-top: 14px; padding: 12px 14px; color: var(--blue-deep); background: var(--ice); border-left: 3px solid var(--blue); font-size: .78rem; }
.lead-feedback--success { color: var(--forest); background: #eef6f1; border-color: var(--forest); }
.lead-alternatives { margin-top: 22px; padding-top: 17px; text-align: center; border-top: 1px solid var(--line); }
.lead-alternatives p { margin: 0 0 10px; color: var(--muted); font-size: .72rem; }
.toast { position: fixed; z-index: 220; left: 50%; bottom: 30px; padding: 10px 16px; color: #fff; background: rgba(3,28,53,.96); transform: translateX(-50%); box-shadow: var(--shadow); font-size: .75rem; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s, transform .6s; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1040px) {
  :root { --shell: min(920px, calc(100% - 36px)); }
  .main-nav { gap: 18px; }
  .header-cta { display: none; }
  .featured-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card:first-child { grid-column: 1 / -1; }
  .article-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-panel { gap: 45px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  :root { --shell: calc(100% - 28px); }
  body { padding-bottom: 58px; }
  .site-header, .site-header.is-scrolled, .site-header.nav-open { height: 64px; }
  .brand-mark { width: 92px; }
  .brand-copy { display: none; }
  .nav-toggle { display: block; }
  .main-nav { position: absolute; top: 64px; right: 0; left: 0; display: none; padding: 12px 20px 22px; color: var(--ink); background: #fff; box-shadow: 0 20px 30px rgba(3,35,66,.13); }
  .nav-open .main-nav { display: grid; }
  .main-nav a { padding: 10px 0; border-bottom: 1px solid var(--line); }
  .main-nav a::after { display: none; }
  .hero { min-height: 680px; }
  .hero-content { padding: 128px 0 64px; }
  .breadcrumbs { margin-bottom: 26px; }
  .hero h1, .hero--spring h1 { font-size: clamp(2.8rem, 14vw, 4.4rem); }
  .hero-lead { font-size: .9rem; }
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
  .proof-grid div { min-height: 84px; padding: 14px 18px; border-bottom: 1px solid rgba(255,255,255,.15); }
  .proof-grid div:nth-child(2) { border-right: 0; }
  .section { padding: 72px 0; }
  .section-head { display: block; margin-bottom: 30px; }
  .section-head > p { margin-top: 15px; }
  .featured-grid { display: block; }
  .feature-card, .feature-card:first-child { min-height: 390px; margin-bottom: 14px; }
  .feature-copy, .feature-card:first-child .feature-copy { padding: 24px; }
  .feature-card:first-child h3 { font-size: 1.8rem; }
  .library-tools { display: grid; }
  .search-wrap { width: 100%; }
  .article-grid { grid-template-columns: 1fr; }
  .guide-panel { display: block; }
  .guide-toc { position: static; margin-bottom: 40px; }
  .place-grid { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: repeat(2, 1fr); grid-template-rows: 250px 180px 180px; }
  .photo-grid figure:first-child { grid-column: 1 / -1; grid-row: auto; }
  .original-article__meta { margin-bottom: 32px; }
  .original-copy { margin-bottom: 36px; }
  .original-copy p { font-size: .92rem; line-height: 1.95; }
  .original-gallery, .original-gallery--three, .original-gallery--five { grid-template-columns: 1fr; gap: 12px; margin-bottom: 46px; }
  .gallery-button::after { content: "+"; right: 8px; bottom: 8px; width: 28px; height: 28px; display: grid; place-items: center; padding: 0; opacity: 1; transform: none; border-radius: 50%; font-size: 1rem; }
  .original-detail-grid { grid-template-columns: 1fr; gap: 25px; padding: 24px 18px; }
  .map-zoom { min-height: 420px; }
  .related-original-grid { grid-template-columns: 1fr; }
  .image-lightbox { padding: 58px 12px 76px; }
  .image-lightbox__image { max-width: calc(100vw - 24px); max-height: calc(100dvh - 150px); }
  .image-lightbox__close { top: 10px; right: 12px; width: 42px; height: 42px; }
  .image-lightbox__prev, .image-lightbox__next { top: auto; bottom: 14px; width: 44px; height: 44px; transform: none; }
  .image-lightbox__prev { left: 12px; }
  .image-lightbox__next { right: 12px; }
  .image-lightbox__caption { right: 64px; bottom: 22px; left: 64px; font-size: .68rem; }
  .faq-layout { display: block; }
  .faq-intro { position: static; margin-bottom: 28px; }
  .final-cta { min-height: 520px; }
  .final-cta-actions { display: grid; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { display: block; }
  .mobile-cta { position: fixed; z-index: 90; right: 0; bottom: 0; left: 0; height: 58px; display: grid; grid-template-columns: .9fr 1.1fr; background: #fff; box-shadow: 0 -8px 25px rgba(2,28,53,.15); }
  .mobile-cta button { border: 0; font-size: .8rem; font-weight: 800; }
  .mobile-cta button:first-child { color: var(--blue); background: #fff; }
  .mobile-cta button:last-child { color: #fff; background: var(--orange); }
  .modal { padding: 14px; }
  .modal-card { max-height: calc(100dvh - 28px); padding: 30px 22px 24px; }
  .lead-fields { grid-template-columns: 1fr; gap: 12px; }
  .lead-field--full { grid-column: auto; }
  .toast { bottom: 74px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* footer-unify: 与首页页脚保持一致 */
.site-footer{background:#0a2a4a;color:rgba(255,255,255,.55);padding:48px 0 32px;font-size:.8rem;line-height:1.9;border-top:1px solid rgba(255,255,255,.14)}
.footer-grid{display:grid;grid-template-columns:1fr;gap:26px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.site-footer a{color:rgba(255,255,255,.75)}
.site-footer a:hover{color:#fff}
.footer-brand .brand{display:inline-flex;align-items:center;gap:11px;margin-right:0}
.footer-brand .brand-mark{width:110px;height:auto;filter:brightness(0) invert(1)}
.footer-brand .brand-copy{display:grid;line-height:1.1}
.footer-brand .brand-copy strong{display:block;color:#fff;font-size:.9rem;letter-spacing:.16em;font-weight:650}
.footer-brand p{margin-top:10px;color:rgba(255,255,255,.55)}
.footer-grid b{display:block;color:rgba(255,255,255,.9);margin-bottom:10px;font-size:.82rem;letter-spacing:.08em}
.footer-grid a,.footer-grid span{display:block;padding:2px 0;color:rgba(255,255,255,.62)}
.footer-bottom{display:block;margin-top:32px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);font-size:.72rem;color:rgba(255,255,255,.42)}