/* ==========================================================================
   YUZHISHENG — 案例 / 文章 / 联系 / 搜索 / 标签 / 错误页
   Extends the shared design system (used together with styles.css + products.css)
   ========================================================================== */

/* ---------- Shared: media variants for cards (base = .article-image) ---------- */
.media-water{background:linear-gradient(150deg,#1f5350,#0e2a2b);color:#d6efe9}
.media-graphite{background:linear-gradient(150deg,#465049,#1c2724);color:#e2e9e3}
.media-sand{background:linear-gradient(150deg,#cbb489,#8a7857);color:#231f16}
.media-lime{background:var(--lime);color:var(--ink)}
.media-ink{background:var(--ink);color:#dfe6e0}
.media-steel{background:linear-gradient(140deg,#b7bfb6,#5d6a62);color:#16201d}
a.article-image{display:block}

/* ---------- Cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px 30px}
.case-card{display:flex;flex-direction:column}
.case-card .article-image{margin-bottom:20px;transition:transform .38s cubic-bezier(.2,.8,.2,1)}
.case-card:hover .article-image{transform:translateY(-4px)}
.case-meta{font-size:10px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin:0 0 10px}
.case-card h3{font-size:21px;line-height:1.2;letter-spacing:-.05em;margin:0 0 12px;max-width:340px}
.case-text{font-size:13px;line-height:1.75;color:var(--muted);margin:0 0 20px}
.case-facts{display:flex;gap:28px;border-top:1px solid var(--line);padding-top:16px;margin-top:auto}
.case-facts strong{display:block;font-size:19px;letter-spacing:-.05em}
.case-facts span{font-size:9.5px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.case-card.is-hidden{display:none}

/* ---------- Blog: featured post ---------- */
.featured-post{display:grid;grid-template-columns:1.05fr .95fr;gap:6%;align-items:center}
.featured-post .featured-media{height:420px;margin-bottom:0}
.featured-copy h2{font-size:clamp(30px,3.4vw,50px);line-height:1.02;letter-spacing:-.06em;margin:0 0 20px}
.featured-copy>p:not(.eyebrow){font-size:14px;line-height:1.78;color:var(--muted);max-width:470px;margin:0 0 30px}
.article-card.is-hidden{display:none}

/* ---------- Blog: newsletter ---------- */
.newsletter{background:var(--ink);color:#fff;padding:68px 8vw;display:grid;grid-template-columns:1fr 1fr;gap:8%;align-items:center}
.newsletter .eyebrow{color:var(--lime);opacity:1}
.newsletter h2{font-size:clamp(30px,3.4vw,50px);line-height:1;letter-spacing:-.07em;margin:0}
.newsletter p{color:#c2ccc4;font-size:13px;line-height:1.7;margin:16px 0 0;max-width:400px}
.newsletter-form{display:flex;gap:10px;flex-wrap:wrap}
.newsletter-form input{flex:1;min-width:220px;border:1px solid rgba(204,225,211,.36);background:rgba(6,17,14,.4);padding:17px 18px;font-size:14px;color:#f4f8f4;outline:none;transition:border-color .2s ease}
.newsletter-form input:focus{border-color:var(--lime)}
.newsletter-form input::placeholder{color:#77887e}
.newsletter-form .button{white-space:nowrap}

/* ---------- Contact: lanes ---------- */
.contact-lanes{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;background:var(--line);border:1px solid var(--line)}
.contact-lane{background:var(--paper);padding:34px 28px 36px;display:flex;flex-direction:column}
.contact-lane span{font-size:10px;font-weight:700;letter-spacing:.1em;color:var(--orange)}
.contact-lane h3{font-size:20px;letter-spacing:-.05em;margin:14px 0 10px}
.contact-lane p{font-size:12.5px;line-height:1.75;color:var(--muted);margin:0 0 24px}
.contact-lane a{font-size:12px;font-weight:800;margin-top:auto}
.contact-lane a:hover{text-decoration:underline}

/* ---------- Contact: map + offices ---------- */
.map-band{display:grid;grid-template-columns:1.08fr .92fr}
.map-panel{position:relative;min-height:380px;background:linear-gradient(150deg,#1b332e,#0f1f1c);background-image:linear-gradient(rgba(173,202,183,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(173,202,183,.12) 1px,transparent 1px);background-size:30px 30px;overflow:hidden}
.map-panel .map-label{position:absolute;left:26px;top:24px;font-size:10px;font-weight:700;letter-spacing:.1em;color:var(--lime)}
.map-panel .map-note{position:absolute;left:26px;bottom:22px;font-size:10px;font-weight:700;letter-spacing:.08em;color:#9fb1a7}
.map-pin{position:absolute;width:13px;height:13px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 7px rgba(213,255,63,.16)}
.map-pin.alt{background:var(--orange);box-shadow:0 0 0 7px rgba(255,100,55,.16)}
.office-list{background:var(--ink);color:#fff;padding:46px 42px;display:flex;flex-direction:column;gap:26px}
.office-list article{border-bottom:1px solid #53605a;padding-bottom:24px}
.office-list article:last-child{border-bottom:0;padding-bottom:0}
.office-list span{font-size:10px;font-weight:700;letter-spacing:.08em;color:var(--lime)}
.office-list h3{font-size:17px;letter-spacing:-.04em;margin:9px 0 8px}
.office-list p{font-size:12px;line-height:1.7;color:#c0c9c2;margin:0}

/* ---------- Contact: FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2px;background:var(--line);border:1px solid var(--line)}
.faq-grid article{background:var(--paper);padding:28px 26px 30px}
.faq-grid h3{font-size:16px;letter-spacing:-.03em;margin:0 0 10px}
.faq-grid p{font-size:12.5px;line-height:1.75;color:var(--muted);margin:0}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .featured-post{grid-template-columns:1fr;gap:32px}
  .featured-post .featured-media{height:320px}
  .contact-lanes{grid-template-columns:1fr}
  .map-band{grid-template-columns:1fr}
  .map-panel{min-height:300px}
  .faq-grid{grid-template-columns:1fr}
}
@media(max-width:780px){
  .case-grid{grid-template-columns:1fr;gap:38px}
  .newsletter{grid-template-columns:1fr;gap:26px;padding:56px 7vw}
  .newsletter-form .button{width:100%}
}

/* ==========================================================================
   Blog article detail (blog-detail.html)
   ========================================================================== */

/* ---------- Article hero meta ---------- */
.article-meta{display:flex;flex-wrap:wrap;gap:34px;align-items:center;margin-top:36px;border-top:1px solid rgba(213,255,63,.22);padding-top:24px}
.article-author{display:flex;gap:12px;align-items:center}
.article-author b{display:block;font-size:13px;color:#f2f7f3}
.article-author span,.meta-block span{font-size:9.5px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:#9fb1a7}
.meta-block span{display:block;margin-bottom:5px}
.meta-block b{font-size:13px;color:#f2f7f3}
.author-avatar{width:44px;height:44px;border-radius:50%;background:var(--lime);color:var(--ink);display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:0}

/* ---------- Cover ---------- */
.article-cover{padding:0 8vw;margin-top:-64px;position:relative;z-index:2}
.article-cover .article-image{height:440px;margin:0;box-shadow:0 30px 60px rgba(18,32,30,.26)}
.article-cover .article-image span{font-size:15px}

/* ---------- Article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:7%;align-items:start}
.prose{max-width:720px}
.prose>p,.prose li{font-size:15px;line-height:1.85;color:#3d4744}
.prose>p{margin:0 0 22px}
.prose h2{font-size:clamp(24px,2.3vw,34px);letter-spacing:-.05em;line-height:1.1;margin:46px 0 16px}
.prose h3{font-size:20px;letter-spacing:-.04em;line-height:1.25;margin:32px 0 12px}
.prose ul,.prose ol{margin:0 0 24px;padding-left:22px}
.prose li{margin-bottom:9px}
.prose strong{color:var(--ink)}
.prose a{text-decoration:underline;text-decoration-color:var(--orange);text-underline-offset:3px}
.prose blockquote{margin:34px 0;padding:26px 28px;background:#16231f;color:#e8eee9;border-left:4px solid var(--lime)}
.prose blockquote p{margin:0;font-size:16px;line-height:1.7;color:#dde6de}
.prose hr{border:0;border-top:1px solid var(--line);margin:42px 0}
.callout{display:flex;flex-direction:column;gap:6px;border:1px solid var(--line);background:#e9e8e0;padding:22px 24px;margin:32px 0}
.callout span{font-size:10px;font-weight:700;letter-spacing:.1em;color:var(--orange)}
.callout p{margin:0;font-size:13.5px;line-height:1.75;color:var(--ink)}
.key-points{border:1px solid var(--ink);padding:26px 28px;margin:36px 0}
.key-points h3{margin:0 0 14px;font-size:17px;letter-spacing:-.03em}
.key-points ul{margin:0;padding-left:20px}

/* ---------- Aside ---------- */
.article-aside{position:sticky;top:26px;display:flex;flex-direction:column;gap:18px}
.toc{border:1px solid var(--line);padding:22px 22px 12px}
.toc h4{font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 12px}
.toc a{display:block;font-size:12.5px;line-height:1.4;padding:9px 0;border-bottom:1px solid var(--line);color:var(--ink)}
.toc a:last-child{border-bottom:0}
.toc a:hover{color:var(--orange)}
.toc a.active{color:var(--orange);font-weight:800}
.share-card{border:1px solid var(--line);padding:22px}
.share-card h4{font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 12px}
.share-card div{display:flex;gap:8px}
.share-card a{width:40px;height:40px;border:1px solid var(--line);display:grid;place-items:center;font-size:11px;font-weight:800;transition:background .2s ease,color .2s ease,border-color .2s ease}
.share-card a:hover{background:var(--lime);border-color:var(--lime);color:var(--ink)}

/* ---------- Author box ---------- */
.author-card{display:flex;gap:22px;align-items:flex-start;border:1px solid var(--line);padding:30px 32px;background:#e9e8e0;max-width:760px}
.author-card .author-avatar{width:56px;height:56px;font-size:16px;flex:0 0 auto}
.author-card span{font-size:10px;font-weight:700;letter-spacing:.1em;color:var(--orange)}
.author-card h3{font-size:19px;letter-spacing:-.04em;margin:8px 0}
.author-card p{font-size:13px;line-height:1.75;color:var(--muted);margin:0}

@media(max-width:980px){
  .article-layout{grid-template-columns:1fr;gap:40px}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap}
  .toc,.share-card{flex:1;min-width:240px}
}
@media(max-width:780px){
  .article-cover{padding:0 7vw;margin-top:-38px}
  .article-cover .article-image{height:230px}
  .article-meta{gap:22px}
  .author-card{flex-direction:column;gap:16px;padding:24px}
}

/* ==========================================================================
   About page (about.html)
   ========================================================================== */
.about-lead{max-width:800px}
.about-lead p{font-size:15px;line-height:1.85;color:#3d4744;margin:0 0 20px}
.about-lead p:last-child{margin-bottom:0}
.about-lead strong{color:var(--ink);font-weight:800}

.support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;background:var(--line);border:1px solid var(--line)}
.support-grid article{background:var(--paper);padding:30px 26px 32px}
.support-grid span{font-size:10px;font-weight:700;letter-spacing:.1em;color:var(--orange)}
.support-grid h3{font-size:19px;letter-spacing:-.05em;margin:13px 0 10px}
.support-grid p{font-size:13px;line-height:1.75;color:var(--muted);margin:0}

/* 证书展示模块样式已移至 css/certificates.css（首页与关于页共用） */

@media(max-width:980px){
  .support-grid{grid-template-columns:1fr}
}

/* ---------- Exhibition gallery ---------- */
.expo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;background:var(--line);border:1px solid var(--line)}
.expo-item{margin:0;background:var(--paper);overflow:hidden}
.expo-item img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;transition:transform .42s cubic-bezier(.2,.8,.2,1)}
.expo-item:hover img{transform:scale(1.04)}
.expo-item figcaption{padding:18px 20px 22px}
.expo-item b{display:block;font-size:15px;letter-spacing:-.03em;margin-bottom:6px}
.expo-item span{font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

@media(max-width:780px){
  .expo-grid{grid-template-columns:1fr}
}

/* ---------- Company facts: copy left, image right ---------- */
.facts-layout{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);gap:6%;align-items:start}
.facts-media{margin:0}
.facts-media img{display:block;width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;border:1px solid var(--line);background:#e6e5dd}
.facts-media figcaption{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-top:16px}
.facts-media b{display:block;font-size:14px;letter-spacing:-.03em;margin-bottom:5px}
.facts-media figcaption>span{font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

/* empty slot, used until real photography is supplied */
.facts-media .photo-slot{aspect-ratio:3/2;min-height:0;padding:20px}
.facts-media .photo-slot span{font-size:10px;letter-spacing:.08em;color:#7d918a}

@media(max-width:980px){
  .facts-layout{grid-template-columns:1fr;gap:34px}
}

/* ---------- Trust wall (certifications / factory / customers) ---------- */
.trust-block{margin-top:52px}
.trust-label{font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 16px}
.logo-row{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--line);border:1px solid var(--line)}
.logo-slot{background:var(--paper);padding:24px 22px;display:flex;flex-direction:column;justify-content:center;gap:9px;min-height:108px}
.logo-slot b{font-size:19px;letter-spacing:-.05em}
.logo-slot i{font-style:normal;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.logo-row.logos .logo-slot{align-items:center;text-align:center;color:#98a19a;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;border:1px dashed var(--line);background:transparent}
.photo-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2px;background:var(--line);border:1px solid var(--line)}
.photo-slot{margin:0;position:relative;min-height:232px;background:linear-gradient(150deg,#2b3c36,#0f1d1a);display:flex;align-items:flex-end;padding:18px;color:#cfe0d8;font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;overflow:hidden}
.photo-slot img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.photo-slot:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:26px 26px;pointer-events:none}
.photo-slot>*{position:relative;z-index:1}

/* 三格始终保持等宽等高，只在窄屏整体降一档高度 */
@media(max-width:980px){
  .logo-row{grid-template-columns:1fr 1fr}
  .photo-slot{min-height:214px;padding:15px;font-size:10px;letter-spacing:.06em}
}
@media(max-width:680px){
  .photo-row{grid-template-columns:minmax(0,1fr)}
  .photo-slot{min-height:184px}
}

/* ==========================================================================
   Case detail (case-detail.html)
   ========================================================================== */

/* ---------- Cover (overlaps the hero, same pattern as blog-detail) ---------- */
.case-cover{padding:0 8vw;margin-top:-68px;position:relative;z-index:2}
.case-cover .article-image{height:520px;margin:0;display:flex;align-items:flex-end;box-shadow:0 30px 60px rgba(18,32,30,.26)}
.case-cover .article-image span{font-size:26px;font-weight:800;letter-spacing:-.05em}

/* ---------- Result band ---------- */
.result-band{background:var(--ink);color:#fff;padding:84px 8vw}
.result-band .eyebrow{color:var(--lime);opacity:1}
.result-band h2{font-size:clamp(28px,3.1vw,46px);line-height:1.02;letter-spacing:-.07em;margin:0;max-width:660px}
.result-band>p{font-size:13px;line-height:1.78;color:#c2ccc4;margin:18px 0 46px;max-width:520px}
.result-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:#3b4a44;border:1px solid #3b4a44}
.result-metrics div{background:#16231f;padding:30px 24px 32px}
.result-metrics strong{display:block;font-size:clamp(28px,3.2vw,42px);line-height:1;letter-spacing:-.07em;color:var(--lime)}
.result-metrics span{display:block;margin-top:11px;font-size:9.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#9fb1a7}

/* ---------- On-site gallery ---------- */
.case-gallery{display:grid;grid-template-columns:1.45fr 1fr 1fr;gap:2px;background:var(--line);border:1px solid var(--line)}
.case-gallery .article-image{margin:0;height:318px;display:flex;align-items:flex-end}

/* ---------- Client quote ---------- */
.quote-band{background:#e6e5dd;border-top:3px solid var(--lime);padding:80px 8vw}
.quote-band figure{margin:0}
.quote-band blockquote{margin:0}
.quote-band blockquote p{font-size:clamp(20px,2.2vw,31px);line-height:1.34;letter-spacing:-.05em;font-weight:700;margin:0 0 30px;color:var(--ink);max-width:940px}
.quote-band figcaption{display:flex;align-items:center;gap:16px}
.quote-band .author-avatar{width:52px;height:52px;font-size:15px}
.quote-band figcaption b{display:block;font-size:14px;margin-bottom:4px}
.quote-band figcaption div span{font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

@media(max-width:980px){
  .result-metrics{grid-template-columns:1fr 1fr}
  .case-gallery{grid-template-columns:1fr 1fr}
  .case-gallery .article-image{height:250px}
}
@media(max-width:780px){
  .case-cover{padding:0 7vw;margin-top:-40px}
  .case-cover .article-image{height:250px}
  .case-cover .article-image span{font-size:17px}
  .result-band{padding:60px 7vw}
  .result-metrics{grid-template-columns:1fr}
  .case-gallery{grid-template-columns:1fr}
  .case-gallery .article-image{height:200px}
  .quote-band{padding:56px 7vw}
}