/* ========== 首页 Hero ========== */
.hero{position:relative;overflow:hidden;padding:56px 0 44px}
.hero::before{
  content:"";position:absolute;inset:-20% -10% auto -10%;height:620px;
  background:radial-gradient(60% 62% at 22% 32%,rgba(42,157,176,.13),transparent 70%),
             radial-gradient(46% 52% at 82% 12%,rgba(140,198,63,.10),transparent 72%);
  pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 232px;gap:52px;align-items:center}
.hero-kicker{
  font-family:"Noto Serif SC","Songti SC",Georgia,serif;font-style:italic;font-size:15px;
  color:var(--brand-400);letter-spacing:.06em;margin-bottom:16px;
}
.hero-title{
  font-family:"Noto Serif SC","Songti SC",Georgia,"Microsoft YaHei",serif;
  font-size:clamp(34px,4.4vw,58px);line-height:1.16;font-weight:900;letter-spacing:-.015em;color:var(--ink-900);
}
/* 高亮段两侧留白，标题自然呈现「全领优AI skill 效果展示」 */
.hero-title .accent{color:var(--brand-500);position:relative;white-space:nowrap;margin:0 .16em}
.hero-title .accent::after{
  content:"";position:absolute;left:0;right:0;bottom:.08em;height:.14em;border-radius:4px;
  background:linear-gradient(90deg,rgba(42,157,176,.28),rgba(42,157,176,.06));z-index:-1;
}
.hero-desc{margin-top:20px;max-width:620px;color:var(--ink-700);font-size:16px;line-height:1.85}
.hero-cta{margin-top:28px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.hero-stats{margin-top:34px;display:flex;align-items:flex-end;gap:40px;flex-wrap:wrap}
.stat-num{font-size:30px;font-weight:800;letter-spacing:-.02em;line-height:1;color:var(--ink-900);font-variant-numeric:tabular-nums}
.stat-label{display:block;margin-top:7px;font-size:12.5px;color:var(--ink-500);letter-spacing:.04em}
.hero-qr{--qr-size:176px;display:flex;flex-direction:column;align-items:center;gap:10px}
.hero-qr-card{
  background:var(--card);border-radius:16px;padding:10px;box-shadow:0 8px 22px rgba(14,27,31,.07);
  border:1px solid rgba(255,255,255,.8);
}
.hero-qr-card img{width:var(--qr-size);height:var(--qr-size);object-fit:contain;border-radius:10px;display:block}
.hero-qr-ph{
  width:var(--qr-size);height:var(--qr-size);border-radius:10px;background:var(--brand-50);color:var(--brand-400);
  display:grid;place-items:center;font-size:12px;text-align:center;line-height:1.6;padding:12px;
}
.hero-qr-cap{font-size:12px;color:var(--ink-500);letter-spacing:.04em}

/* ========== 区块标题 ========== */
.section{padding:20px 0 8px}
.section-head{margin-bottom:26px}
.section-eyebrow{
  font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-300);
  font-weight:600;margin-bottom:10px;
}
.section-title{font-size:clamp(24px,2.6vw,34px);font-weight:800;letter-spacing:-.015em}
.section-desc{margin-top:12px;color:var(--ink-500);font-size:14.5px;line-height:1.8;max-width:760px}

/* ========== 画廊：左树 + 右网格 ========== */
.gallery-section{padding-bottom:24px}
.gallery-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:32px;align-items:start}

.cat-panel{
  background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow-1);
  border:1px solid var(--line);padding:16px 12px 12px;position:sticky;top:calc(var(--header-h) + 16px);
}
.cat-panel-head{display:flex;align-items:center;gap:8px;padding:0 6px 12px;border-bottom:1px solid var(--line);margin-bottom:8px}
.cat-panel-title{font-size:13px;font-weight:700;color:var(--ink-500);letter-spacing:.06em}
.cat-close{display:none;margin-left:auto;border:0;background:var(--bg);width:28px;height:28px;border-radius:50%;color:var(--ink-500);cursor:pointer;font-size:16px;line-height:1}
.cat-search-wrap{padding:0 2px 8px}
.cat-search{height:36px;font-size:13.5px;padding:0 12px;border-radius:9px}
.cat-scroll{overflow-y:auto;overscroll-behavior:contain;max-height:calc(100vh - var(--header-h) - 190px);padding-right:2px}
.cat-scroll::-webkit-scrollbar{width:6px}
.cat-scroll::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:6px}
.cat-scroll::-webkit-scrollbar-track{background:transparent}
.cat-item{
  display:flex;align-items:center;gap:8px;width:100%;height:44px;padding:0 10px;border:0;background:transparent;
  border-radius:9px;cursor:pointer;text-align:left;color:var(--ink-700);font-size:14.5px;font-weight:500;
  transition:background .14s var(--ease),color .14s var(--ease);position:relative;
  /* 分类项是 <a>：去掉下划线并让 100% 宽度含内边距 */
  box-sizing:border-box;text-decoration:none;
}
.cat-item:hover{background:rgba(18,112,127,.06);color:var(--brand)}
.cat-item .cat-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cat-item .cat-count{font-size:12.5px;color:var(--ink-300);font-variant-numeric:tabular-nums;flex:none}
.cat-item .cat-arrow{
  flex:none;width:16px;height:16px;display:grid;place-items:center;color:var(--ink-300);
  transition:transform .2s var(--ease),color .14s;
}
.cat-item.is-open .cat-arrow{transform:rotate(90deg);color:var(--brand-400)}
.cat-item.is-active{background:var(--brand-50);color:var(--brand);font-weight:700}
.cat-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2.5px;height:20px;border-radius:3px;background:var(--brand);
}
.cat-item.is-active .cat-count{color:var(--brand-400);font-weight:600}
.cat-subs{overflow:hidden}
.cat-subs[hidden]{display:none}
.cat-subs .cat-item{height:38px;padding-left:34px;font-size:13.5px;font-weight:400;color:var(--ink-500)}
.cat-subs .cat-item.is-active{color:var(--brand);font-weight:600}
.cat-empty{padding:12px 10px;font-size:13px;color:var(--ink-300)}

/* 工具条 */
.gallery-main{min-width:0}
.gallery-bar{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px;
}
.result-count{font-size:14px;color:var(--ink-500);white-space:nowrap}
.result-count b{color:var(--ink-900);font-weight:700}
.gallery-tools{margin-left:auto;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.search-box{
  position:relative;display:flex;align-items:center;height:42px;
  background:var(--card);border:1px solid var(--line-strong);border-radius:999px;padding:0 8px 0 14px;
  transition:border-color .16s,box-shadow .16s;
}
.search-box:focus-within{border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(42,157,176,.12)}
.search-box svg{color:var(--ink-300);flex:none}
.search-box input{
  border:0;background:transparent;outline:none;font-size:14px;width:190px;padding:0 10px;color:var(--ink-900);
  font-size:16px; /* 移动端防放大 */
}
@media (min-width:768px){.search-box input{font-size:14px}}
.search-box button{
  height:30px;padding:0 14px;border:0;border-radius:999px;background:var(--brand);color:#fff;
  font-size:13px;cursor:pointer;flex:none;
}
.sort-select{
  height:42px;border-radius:999px;border:1px solid var(--line-strong);background:var(--card);
  color:var(--ink-700);font-size:13.5px;padding:0 30px 0 16px;cursor:pointer;appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7F86' stroke-width='2.4'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 13px center;
}
.cat-trigger{display:none}

/* 卡片网格 */
.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px 20px}
.card{
  display:flex;flex-direction:column;border-radius:var(--radius);background:transparent;min-width:0;
  transition:transform .2s var(--ease);
}
.card:hover{transform:translateY(-3px)}
.card-thumb{
  position:relative;aspect-ratio:3/4;border-radius:var(--radius);overflow:hidden;background:var(--brand-50);
  box-shadow:var(--shadow-1);
}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.card:hover .card-thumb img{transform:scale(1.035)}
.card-thumb .ph{
  width:100%;height:100%;display:grid;place-items:center;color:var(--brand-400);
  background:linear-gradient(150deg,#EDF7F9,#DCEFF3);font-size:12.5px;letter-spacing:.08em;
}
.card-badge{
  position:absolute;left:10px;top:10px;display:flex;align-items:center;gap:4px;
  height:24px;padding:0 9px;border-radius:999px;background:rgba(255,255,255,.94);
  color:var(--ink-700);font-size:11.5px;font-weight:600;backdrop-filter:blur(4px);
  box-shadow:0 1px 4px rgba(14,27,31,.10);
}
.card-badge.is-video{background:rgba(14,27,31,.78);color:#fff}
.card-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:52px;height:52px;border-radius:50%;background:rgba(14,27,31,.55);backdrop-filter:blur(2px);
  display:grid;place-items:center;color:#fff;transition:background .16s,transform .16s;
}
.card:hover .card-play{background:var(--brand);transform:translate(-50%,-50%) scale(1.06)}
.card-body{padding:12px 2px 0}
.card-title{
  font-size:14.5px;font-weight:600;color:var(--ink-900);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-cat{margin-top:5px;font-size:12.5px;color:var(--ink-300)}
.load-more-wrap{display:flex;justify-content:center;padding:34px 0 8px}
.load-more{
  height:46px;min-width:200px;padding:0 30px;border-radius:999px;border:1px solid var(--line-strong);
  background:var(--card);color:var(--ink-700);font-size:14px;font-weight:500;cursor:pointer;
  transition:border-color .16s,color .16s;
}
.load-more:hover{border-color:var(--brand-400);color:var(--brand)}
.load-more[disabled]{opacity:.55;cursor:default}
.empty{
  padding:64px 20px;text-align:center;color:var(--ink-500);border:1px dashed var(--line-strong);
  border-radius:var(--radius);background:var(--card);
}
.empty h3{font-size:16px;color:var(--ink-700);margin-bottom:8px}
.empty p{font-size:13.5px}
.empty-actions{margin-top:16px;display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.skeleton{background:linear-gradient(90deg,#EEF4F6 25%,#F6FAFB 37%,#EEF4F6 63%);background-size:400% 100%;animation:shine 1.3s infinite linear;border-radius:var(--radius)}
@keyframes shine{0%{background-position:100% 50%}100%{background-position:0 50%}}
.cat-mask{display:none}

/* ========== 详情页 ========== */
.detail-wrap{padding:22px 0 0}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:18px;flex-wrap:wrap}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:var(--ink-300)}
.crumbs .current{color:var(--ink-700);font-weight:500}
.detail-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(320px,.9fr);gap:36px;align-items:start}

.stage{background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow-1);padding:12px}
.stage-view{
  position:relative;background:#0E1B1F;border-radius:12px;overflow:hidden;aspect-ratio:4/5;
  display:grid;place-items:center;
}
@media (min-width:1024px){.stage-view{aspect-ratio:4/4.6}}
.stage-view img{width:100%;height:100%;object-fit:contain;cursor:zoom-in;background:#0E1B1F}
.stage-view video{width:100%;height:100%;object-fit:contain;background:#000}
.stage-view iframe{width:100%;height:100%;border:0}
.stage-view .stage-ph{color:#8FB7BF;font-size:13px;text-align:center;padding:24px;line-height:1.8}
.stage-count{
  position:absolute;right:12px;top:12px;padding:3px 10px;border-radius:999px;
  background:rgba(14,27,31,.6);color:#fff;font-size:12px;font-variant-numeric:tabular-nums;backdrop-filter:blur(4px);
}
.stage-nav{
  position:absolute;top:50%;transform:translateY(-50%);width:38px;height:38px;border-radius:50%;
  border:0;background:rgba(255,255,255,.9);color:var(--ink-900);cursor:pointer;display:grid;place-items:center;
  opacity:0;transition:opacity .18s,background .16s;box-shadow:0 2px 10px rgba(0,0,0,.18);
}
.stage-view:hover .stage-nav{opacity:1}
.stage-nav:hover{background:#fff}
.stage-nav.prev{left:10px}
.stage-nav.next{right:10px}
.stage-nav[disabled]{display:none}
.thumbs{display:flex;gap:8px;overflow-x:auto;padding:10px 2px 4px;scrollbar-width:thin}
.thumbs::-webkit-scrollbar{height:5px}
.thumbs::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:5px}
.thumb{
  position:relative;flex:none;width:72px;height:72px;border-radius:9px;overflow:hidden;border:2px solid transparent;
  background:var(--bg);cursor:pointer;padding:0;transition:border-color .16s,transform .16s;
}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb .t-ph{
  display:block;width:100%;height:100%;
  background:linear-gradient(150deg,#DCEFF3,#C7E4EA);
}
.thumb:hover{transform:translateY(-1px)}
.thumb.is-active{border-color:var(--brand)}
.thumb .t-play{
  position:absolute;inset:0;display:grid;place-items:center;color:#fff;background:rgba(14,27,31,.32);
}

.info-card{
  background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow-1);padding:26px 24px;
  position:sticky;top:calc(var(--header-h) + 16px);
}
.info-title{font-size:clamp(20px,2.1vw,26px);line-height:1.4;font-weight:800;letter-spacing:-.01em}
.info-summary{
  margin-top:16px;color:var(--ink-700);font-size:14.5px;line-height:1.85;position:relative;
  max-height:8.4em;overflow:hidden;transition:max-height .3s var(--ease);
}
.info-summary.is-expanded{max-height:none}
.info-summary::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2.6em;pointer-events:none;
  background:linear-gradient(rgba(255,255,255,0),#fff);transition:opacity .2s;
}
.info-summary.is-expanded::after{opacity:0}
.summary-toggle{
  margin-top:6px;border:0;background:transparent;color:var(--brand);font-size:13px;cursor:pointer;padding:0;
  font-weight:600;
}
.btn-stack{margin-top:22px;display:flex;flex-direction:column;gap:11px}
.info-meta{
  margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-300);
}

/* 同类推荐 */
.related{padding:48px 0 0}
.related-head{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.related-title{font-size:20px;font-weight:800}
.more-link{
  margin-left:auto;font-size:13.5px;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:4px;
}
.more-link:hover{gap:8px}
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}

/* ========== Lightbox ========== */
.lb{position:fixed;inset:0;z-index:300;display:none;background:rgba(8,16,19,.94);touch-action:none}
.lb.is-open{display:block}
.lb-stage{position:absolute;inset:0;display:grid;place-items:center;overflow:hidden}
.lb-img{
  max-width:92vw;max-height:88vh;object-fit:contain;transform-origin:center center;
  transition:transform .18s var(--ease);will-change:transform;user-select:none;-webkit-user-drag:none;
}
.lb-top{
  position:absolute;left:0;right:0;top:0;height:56px;display:flex;align-items:center;gap:12px;padding:0 18px;
  background:linear-gradient(rgba(0,0,0,.45),transparent);color:#fff;font-size:13px;z-index:2;
  transition:opacity .2s;
}
.lb-count{font-variant-numeric:tabular-nums;opacity:.85}
.lb-tools{margin-left:auto;display:flex;gap:8px}
.lb-btn{
  width:38px;height:38px;border-radius:50%;border:0;background:rgba(255,255,255,.13);color:#fff;
  display:grid;place-items:center;cursor:pointer;transition:background .16s;
}
.lb-btn:hover{background:rgba(255,255,255,.24)}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;border-radius:50%;border:0;background:rgba(255,255,255,.13);color:#fff;display:grid;place-items:center;cursor:pointer;z-index:2}
.lb-nav:hover{background:rgba(255,255,255,.24)}
.lb-nav.prev{left:16px}.lb-nav.next{right:16px}
.lb-hint{
  position:absolute;left:50%;bottom:calc(18px + env(safe-area-inset-bottom));transform:translateX(-50%);
  color:rgba(255,255,255,.55);font-size:12px;white-space:nowrap;transition:opacity .3s;
}
.lb.is-zoomed .lb-img{cursor:grab}
.lb.is-panning .lb-img{cursor:grabbing;transition:none}

/* ========== 关于页 ========== */
.about-hero{padding:56px 0 8px}
.about-hero h1{font-size:clamp(28px,3.4vw,42px);font-weight:800;letter-spacing:-.02em;font-family:"Noto Serif SC","Songti SC",Georgia,serif}
.about-hero p{margin-top:14px;color:var(--ink-500);font-size:15px;max-width:680px;line-height:1.85}
.about-body{
  max-width:800px;padding:34px 0 8px;font-size:15.5px;line-height:1.95;color:var(--ink-700);
}
.about-body h3{font-size:19px;margin:34px 0 12px;color:var(--ink-900);font-weight:800}
.about-body h4{font-size:16px;margin:24px 0 8px;color:var(--ink-900)}
.about-body p{margin:12px 0}
.about-body ul,.about-body ol{margin:12px 0;padding-left:22px;list-style:revert}
.about-body li{margin:7px 0}
.about-body img{border-radius:12px;margin:16px 0}
.about-body a{color:var(--brand);border-bottom:1px solid var(--brand-100)}
.about-body blockquote{
  margin:18px 0;padding:14px 18px;background:var(--brand-50);border-left:3px solid var(--brand-400);
  border-radius:0 10px 10px 0;color:var(--ink-700);
}
.about-body code{background:var(--bg);padding:2px 6px;border-radius:5px;font-size:.92em}
.about-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:22px 0}
.about-step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.about-step b{display:block;font-size:13px;color:var(--brand-400);letter-spacing:.1em;margin-bottom:6px}
.about-step span{font-size:14px;color:var(--ink-700);line-height:1.7}

/* ========== 搜索页 ========== */
.search-hero{padding:44px 0 10px}
.search-hero h1{font-size:clamp(24px,2.8vw,34px);font-weight:800}
.search-form-lg{margin-top:20px;display:flex;gap:10px;max-width:620px}
.search-form-lg .search-box{flex:1;height:48px;border-radius:12px}
.search-form-lg .search-box input{width:100%;font-size:16px}
.search-form-lg .btn{border-radius:12px}

/* ========== 错误页 ========== */
.error-page{min-height:56vh;display:grid;place-items:center;text-align:center;padding:60px 20px}
.error-code{font-size:76px;font-weight:800;color:var(--brand-100);line-height:1;letter-spacing:-.04em}
.error-page h1{font-size:22px;margin-top:8px}
.error-page p{color:var(--ink-500);margin-top:10px;font-size:14px}

/* ========== 响应式 ========== */
@media (max-width:1199px){
  .cards{grid-template-columns:repeat(3,minmax(0,1fr))}
  .related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .gallery-layout{grid-template-columns:240px minmax(0,1fr);gap:26px}
  .hero-inner{gap:36px;grid-template-columns:minmax(0,1fr) 212px}
  .hero-qr-card img,.hero-qr-ph{width:min(var(--qr-size),156px);height:min(var(--qr-size),156px)}
}
@media (max-width:1023px){
  .hero{padding:38px 0 30px}
  .hero-inner{grid-template-columns:1fr;gap:30px}
  .hero-qr{order:3;align-items:flex-start}
  .hero-qr-card img,.hero-qr-ph{width:min(var(--qr-size),128px);height:min(var(--qr-size),128px)}
  .hero-qr{flex-direction:row;align-items:center;gap:14px}
  .hero-qr-cap{max-width:90px;line-height:1.5}
  .gallery-layout{grid-template-columns:1fr}
  .cat-trigger{display:inline-flex}
  .cat-panel{
    position:fixed;left:0;right:0;bottom:0;top:auto;z-index:130;border-radius:20px 20px 0 0;
    padding:14px 12px calc(10px + env(safe-area-inset-bottom));
    max-height:82vh;transform:translateY(104%);transition:transform .28s var(--ease);
    box-shadow:0 -12px 40px rgba(14,27,31,.18);border:0;
  }
  body.cat-open .cat-panel{transform:none}
  body.cat-open{overflow:hidden}
  .cat-panel-head{padding-bottom:10px}
  .cat-close{display:block}
  .cat-scroll{max-height:calc(82vh - 130px)}
  .cat-mask{
    display:block;position:fixed;inset:0;background:rgba(10,22,26,.42);z-index:125;
    opacity:0;pointer-events:none;transition:opacity .24s;
  }
  body.cat-open .cat-mask{opacity:1;pointer-events:auto}
  /* 用 minmax(0,1fr)：1fr 的 auto 最小值会被 nowrap 子元素撑破，导致整页横向溢出 */
  .detail-grid{grid-template-columns:minmax(0,1fr);gap:22px}
  .stage,.info-card{min-width:0}
  .info-card{position:static}
  .stage{padding:10px}
  .stage-view{aspect-ratio:auto;min-height:260px}
  .stage-view img,.stage-view video{max-height:62vh;width:auto;margin:0 auto}
  .related-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
  .about-steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  .hero-title{font-size:clamp(26px,7.6vw,34px);line-height:1.25}
  .hero-desc{font-size:14.5px;line-height:1.8;margin-top:16px}
  .hero-cta{margin-top:22px}
  .hero-cta .btn{width:100%}
  .hero-stats{margin-top:26px;gap:26px}
  .stat-num{font-size:24px}
  .stat-label{font-size:11.5px}
  .section-head{margin-bottom:18px}
  .section-title{font-size:22px}
  .section-desc{font-size:13.5px}
  .gallery-bar{gap:8px}
  .gallery-tools{width:100%;margin-left:0}
  .search-box{flex:1;height:40px}
  .search-box input{width:100%}
  .sort-select{height:40px;padding:0 28px 0 12px;font-size:13px}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 12px}
  .card-title{font-size:13.5px}
  .card-cat{font-size:11.5px}
  .card-badge{height:21px;font-size:10.5px;padding:0 8px;left:8px;top:8px}
  .card-play{width:42px;height:42px}
  .load-more{width:100%}
  .related{padding:34px 0 0}
  .related-title{font-size:17px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .crumbs{font-size:12px;margin-bottom:14px}
  .info-card{padding:20px 18px;border-radius:var(--radius)}
  .info-title{font-size:19px}
  .btn-grad{height:50px;font-size:14.5px}
  .thumbs .thumb{width:60px;height:60px}
  .stage-view img,.stage-view video{max-height:52vh}
  .lb-nav{display:none}
  .lb-hint{font-size:11px}
  .about-hero{padding:34px 0 0}
  .about-body{font-size:15px;padding-top:22px}
  .about-steps{grid-template-columns:1fr}
  .search-form-lg{flex-direction:column}
  .search-form-lg .btn{width:100%}
}

/* ===== GEO：可引用摘要 / 事实清单 / 常见问题 ===== */
.geo-lede{
  margin:14px 0 0;padding:12px 14px;border-radius:10px;
  background:linear-gradient(180deg,rgba(18,112,127,.055),rgba(18,112,127,.02));
  border:1px solid rgba(18,112,127,.14);
  color:var(--ink-700);font-size:14px;line-height:1.8;
}
.geo-facts{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px;max-width:100%;overflow:hidden}
.geo-facts li{
  display:inline-flex;align-items:center;gap:6px;max-width:100%;min-width:0;
  padding:5px 10px;border-radius:999px;background:#F2F7F8;border:1px solid var(--line);
  font-size:12.5px;color:var(--ink-700);white-space:nowrap;
}
.geo-facts b{color:var(--ink-300);font-weight:600;white-space:nowrap;flex:none}
.geo-facts span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:min(260px,56vw)}

.geo-faq{margin-top:44px;padding-top:8px}
.geo-faq-title{font-size:20px;font-weight:800;margin-bottom:14px}
.geo-faq-item{
  border:1px solid var(--line);border-radius:12px;background:#fff;padding:0 16px;margin-bottom:10px;
}
.geo-faq-item summary{
  cursor:pointer;list-style:none;padding:14px 0;font-weight:600;font-size:14.5px;color:var(--ink-900);
  display:flex;align-items:center;gap:10px;
}
.geo-faq-item summary::-webkit-details-marker{display:none}
.geo-faq-item summary::before{
  content:"Q";flex:none;width:20px;height:20px;border-radius:6px;background:var(--brand);color:#fff;
  font-size:11px;font-weight:800;display:grid;place-items:center;
}
.geo-faq-item[open] summary{border-bottom:1px dashed var(--line)}
.geo-faq-item p{margin:0;padding:12px 0 16px 30px;color:var(--ink-700);font-size:14px;line-height:1.85}

@media (max-width:640px){
  .geo-lede{font-size:13.5px;padding:10px 12px}
  /* 小屏：每条事实占满一行，「键」不收缩、「值」省略号截断，禁止撑宽容器 */
  .geo-facts li{font-size:12px;width:100%;max-width:100%;min-width:0}
  .geo-facts span{max-width:100%;flex:1 1 0%;min-width:0}
  .geo-faq-title{font-size:17px}
  .geo-faq-item p{padding-left:0}
}