/* ============================================================
   首页 Demo：v1 的内容顺序 + v2 的视觉语言
   ============================================================ */

/* ---------------- 首屏 ---------------- */
.demo-cover{padding:106px 0 24px}
.demo-cover .wrap{display:flex;flex-direction:column;min-height:calc(100vh - 130px)}
.demo-hero{display:block;padding-top:clamp(28px,6vh,64px)}
.demo-cover h1{font-family:var(--serif);font-size:clamp(44px,6vw,88px);font-weight:700;line-height:1.08;letter-spacing:.004em;color:var(--ink)}
.demo-cover h1 .dot{display:inline-block;width:.11em;height:.11em;border-radius:50%;background:var(--red);margin-left:.1em;vertical-align:.12em}
.demo-slogan{margin-top:20px;font-family:var(--serif);font-size:clamp(17px,1.7vw,23px);font-weight:500;letter-spacing:.06em;color:var(--ink-2)}
.demo-lead{margin-top:13px;font-size:13px;line-height:1.85;color:var(--ink-2);max-width:31em}
.demo-hero-actions{display:flex;align-items:center;justify-content:flex-start;gap:24px;flex-wrap:wrap;margin-top:24px}
.demo-hero-band{display:grid;grid-template-columns:auto minmax(0,1fr);gap:48px;align-items:center;margin-top:auto;padding-top:20px;border-top:1px solid rgba(17,17,17,.18)}
.demo-stats{display:flex;gap:48px}
.demo-stat b{display:block;font-family:var(--num);font-size:clamp(30px,3.2vw,42px);font-weight:500;line-height:1;letter-spacing:-.01em;color:var(--ink)}
.demo-stat b em{font-style:normal;font-size:.44em;letter-spacing:0;margin-left:2px;color:var(--ink-2)}
.demo-stat span{display:block;margin-top:8px;font-size:10.5px;line-height:1.5;color:var(--ink-3);white-space:nowrap}
.demo-steps{display:flex;justify-content:flex-end;align-items:center;gap:10px;flex-wrap:wrap;font-family:var(--serif);font-size:13px;color:var(--ink-2);white-space:nowrap}
.demo-steps i{width:20px;height:1px;background:rgba(17,17,17,.2)}
.demo-cover .cover-bottom{margin-top:20px;padding-top:12px}

/* ---------------- 常见管理难题：一行切换 ---------------- */
.demo-pains{padding:104px 0 112px;background:#fff}
.demo-pain-title{display:grid;grid-template-columns:7fr 5fr;gap:64px;align-items:end;margin-top:26px;padding-bottom:30px}
.demo-pain-title h2{font-family:var(--serif);font-size:clamp(38px,4.4vw,58px);font-weight:700;line-height:1.3}
.demo-pain-aside{display:grid;grid-template-columns:auto 1fr;gap:2px 14px;align-items:baseline;padding-bottom:6px}
.demo-pain-aside b{font-family:var(--num);font-size:46px;font-weight:500;line-height:.9;color:var(--red)}
.demo-pain-aside span{font-size:11px;letter-spacing:.08em;color:var(--ink-3)}
.demo-pain-aside p{grid-column:1/-1;margin-top:8px;font-size:12px;line-height:1.85;color:var(--ink-2);max-width:32em}
.pain-tabs{display:flex;border-top:1px solid var(--ink);border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:none}
.pain-tabs::-webkit-scrollbar{display:none}
.pain-hint{display:none;margin-top:6px;font-size:9px;letter-spacing:.06em;color:var(--ink-3);text-align:right}
.pain-tab{
  flex:1;min-width:128px;display:flex;align-items:baseline;gap:10px;
  padding:15px 17px;border:0;border-right:1px solid var(--line);
  background:none;font-family:var(--sans);font-size:13px;color:var(--ink-2);
  text-align:left;cursor:pointer;transition:color .25s,background .25s;
}
.pain-tab:last-child{border-right:0}
.pain-tab span{font-family:var(--num);font-size:10px;letter-spacing:.1em;color:var(--ink-3);transition:color .25s}
.pain-tab:hover{color:var(--red)}
.pain-tab.on{background:var(--tint-band);color:var(--ink)}
.pain-tab.on span{color:var(--red)}
.pain-panels{border-bottom:1px solid var(--line)}
.pain-panel{display:grid;grid-template-columns:336px minmax(0,1fr);gap:36px;align-items:center;min-height:0;padding:26px 0 28px}
.pain-fig{position:relative;margin:0;overflow:hidden;aspect-ratio:16/10;background:#e9e9e7}
.pain-fig img{display:block;width:100%;height:100%;object-fit:cover;filter:grayscale(.15) saturate(.92);transition:transform .7s var(--ease)}
.pain-panel:hover .pain-fig img{transform:scale(1.025)}
.pain-copy{min-width:0}
.pain-go{display:inline-flex;margin-top:16px}
.pain-panel[hidden]{display:none}
.pain-panel.on{animation:painIn .3s var(--ease)}
@keyframes painIn{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
.pain-kicker{font-family:var(--num);font-size:9.5px;letter-spacing:.18em;color:var(--red);text-transform:uppercase}
.pain-q{margin-top:10px;font-family:var(--serif);font-size:clamp(20px,2.3vw,30px);font-weight:700;line-height:1.5;color:var(--ink);max-width:36em}
.pain-go{display:inline-flex;align-items:center;gap:8px;padding-bottom:5px;border-bottom:1px solid var(--red);font-size:12px;color:var(--red);white-space:nowrap}
.pain-go span{font-family:var(--num);transition:transform .3s var(--ease)}
.pain-go:hover span{transform:translateX(4px)}

/* ---------------- 产品矩阵 ---------------- */
.demo-products{padding:112px 0 120px;background:var(--tint-band)}
.demo-products-title{display:grid;grid-template-columns:7fr 5fr;gap:60px;align-items:end;margin-top:26px}
.demo-products-head h2{font-family:var(--serif);font-size:clamp(44px,5.2vw,76px);font-weight:700;line-height:1.18}
.demo-products-aside p{font-size:13.5px;line-height:1.9;color:var(--ink-2);padding-bottom:4px}
.demo-products-en{display:block;margin-top:18px;font-family:var(--num);font-size:9.5px;letter-spacing:.2em;color:var(--ink-3);text-transform:uppercase}
.series-matrix{display:grid;grid-template-columns:repeat(4,1fr);margin-top:44px;border-top:1px solid var(--ink)}
.series-col{position:relative;display:block;min-width:0;padding:24px 24px 0 0;border-right:1px solid var(--line);transition:background .3s}
.series-col:not(:first-child){padding-left:24px}
.series-col:last-child{border-right:0;padding-right:0}
.series-col figure{position:relative;margin:0 0 18px;overflow:hidden;aspect-ratio:4/5;background:#e4e3df}
.series-col img{display:block;width:100%;height:100%;object-fit:cover;filter:grayscale(.18) saturate(.92) contrast(1.04);transition:transform .8s var(--ease)}
.series-col:hover img{transform:scale(1.035)}
.series-badge{position:absolute;left:14px;top:12px;padding:3px 8px;font-family:var(--num);font-size:21px;font-weight:500;line-height:1.1;color:#fff;background:rgba(8,10,20,.3);letter-spacing:.04em;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
.series-meta{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-family:var(--num);font-size:10px;letter-spacing:.12em;color:var(--ink-3)}
.series-meta span:first-child{color:var(--red)}
.series-meta span:last-child{text-align:right}
.series-col h3{margin-top:10px;font-family:var(--serif);font-size:28px;font-weight:700;line-height:1.35;transition:color .25s}
.series-col p{margin-top:8px;min-height:3.2em;font-size:12px;line-height:1.7;color:var(--ink-2)}
.series-go{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:11px;color:var(--ink-3);transition:color .25s}
.series-go i{font-style:normal;font-family:var(--num);transition:transform .3s var(--ease)}
.series-col:hover h3,.series-col:hover .series-go{color:var(--red)}
.series-col:hover .series-go i{transform:translateX(4px)}
.demo-sec-foot{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-top:44px;padding-top:18px;border-top:1px solid var(--line);font-size:11.5px;color:var(--ink-3)}

/* ---------------- 一个红点，一套解法：沿用产品介绍的列表 + 大图 ---------------- */
.demo-method{background:#fff;padding:104px 0 112px}
.demo-method .cat-row .count{color:var(--red)}
.demo-method .catalog-foot{margin-top:42px}
/* ---------------- 客户案例 ---------------- */
.demo-cases{padding:102px 0 112px;background:#fff}
.demo-cases .sec-head h2{font-size:clamp(44px,5vw,72px);line-height:1.2}
.demo-cases .case-copy h3{font-size:clamp(24px,2.3vw,32px);line-height:1.5}
.demo-cases .case-main .result{font-size:26px}
.demo-cases .case-small h3{font-size:19px;line-height:1.6}
.demo-cases .case-small .res{font-size:12px}
.demo-all-cases{display:flex;justify-content:space-between;align-items:center;margin-top:36px;padding:20px 0;border-top:1px solid var(--ink);border-bottom:1px solid var(--line);font-family:var(--serif);font-size:clamp(20px,2.2vw,28px);font-weight:700;color:var(--ink);transition:color .25s}
.demo-all-cases i{font-style:normal;font-family:var(--num);font-size:1.25em;color:var(--red);transition:transform .3s var(--ease)}
.demo-all-cases:hover{color:var(--red)}
.demo-all-cases:hover i{transform:translateX(6px)}
.demo-metrics{display:grid;grid-template-columns:repeat(4,1fr);margin-top:34px;border-top:1px solid var(--ink);border-bottom:1px solid var(--line)}
.demo-metrics > div{padding:22px 22px 24px 0;border-right:1px solid var(--line)}
.demo-metrics > div + div{padding-left:22px}
.demo-metrics > div:last-child{border-right:0;padding-right:0}
.demo-metrics b{display:block;font-family:var(--num);font-size:clamp(24px,2.8vw,38px);font-weight:500;line-height:1.1;color:var(--ink);white-space:nowrap}
.demo-metrics b em{font-style:normal;font-size:.6em;color:var(--ink-2)}
.demo-metrics b i{font-style:normal;color:var(--red);margin:0 .08em}
.demo-metrics span{display:block;margin-top:8px;font-size:12px;color:var(--ink)}
.demo-metrics small{display:block;margin-top:4px;font-size:10px;line-height:1.55;color:var(--ink-3)}
.demo-cases .case-feature{margin-top:34px}
.case-all{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:auto;padding:16px 0;border-top:1px solid var(--line);font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink);transition:color .25s,background .25s}
.case-all b{font-family:var(--num);font-size:1.15em;font-weight:500;color:var(--red);margin:0 .1em}
.case-all i{font-style:normal;font-family:var(--num);font-size:1.3em;color:var(--red);transition:transform .3s var(--ease)}
.case-all:hover{color:var(--red)}
.case-all:hover i{transform:translateX(5px)}

/* ---------------- 深色页脚（浅一点的墨灰） ---------------- */
.dfoot{position:relative;overflow:hidden;background:linear-gradient(180deg,#2b3338 0%,#232b30 100%);color:#f2f4f5;padding:48px 0 18px}
.dfoot::before{content:"";position:absolute;left:0;right:0;top:0;height:360px;background:url("../assets/img/logo_icon.svg") 82% 40%/min(42vw,420px) no-repeat;opacity:.1;pointer-events:none;-webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.6) 55%,transparent 100%);mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.6) 55%,transparent 100%)}
.dfoot .wrap{position:relative;z-index:1}
.dfoot a{text-decoration:none}
.dfoot-top{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;padding-bottom:16px;border-bottom:1px solid #3a454b}
.dfoot-brand{display:flex;align-items:center;gap:14px;font-family:var(--num);font-size:9.5px;letter-spacing:.16em;color:#9aa6ac;text-transform:uppercase}
.dfoot-brand img{width:auto;height:40px;display:block}
.dfoot-word{
  font-family:var(--num);font-size:clamp(84px,10.5vw,146px);font-weight:500;line-height:.76;
  letter-spacing:-.01em;color:transparent;margin-right:44px;-webkit-text-stroke:1px rgba(255,255,255,.32);
  user-select:none;
}
.dfoot-cta{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:44px;align-items:end;padding:24px 0 28px;border-bottom:1px solid #3a454b}
.dfoot-cta h2{font-family:var(--serif);font-size:clamp(28px,3.2vw,42px);font-weight:700;line-height:1.35;color:#f5f7f8}
.dfoot-cta p{margin-top:10px;font-size:11.5px;line-height:1.85;color:#a3afb5;max-width:52em}
.dfoot-cta .btn-red{font-size:12.5px;padding:13px 20px}
.dfoot-grid{display:grid;grid-template-columns:1fr 1fr 1.25fr;gap:40px;padding:26px 0 30px}
.dfoot-col h3{margin-bottom:11px;font-family:var(--num);font-size:9.5px;font-weight:500;letter-spacing:.18em;color:#87949a;text-transform:uppercase}
.dfoot-col a{display:block;font-size:12px;line-height:1.95;color:#d6dde0;transition:color .2s}
.dfoot-col a:hover{color:#fff}
.dfoot-contact .dfoot-tel{font-family:var(--num);font-size:25px;font-weight:500;line-height:1.2;letter-spacing:.02em;color:#fff;margin-bottom:5px}
.dfoot-contact p{margin-top:9px;font-size:10.5px;line-height:1.8;color:#9aa6ac}
.dfoot-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:14px;border-top:1px solid #3a454b;font-family:var(--num);font-size:9px;letter-spacing:.09em;color:#7e8a90}

/* ---------------- 响应式 ---------------- */
@media(max-width:1100px){
  .demo-hero-actions{justify-content:flex-start}
  .demo-hero-band{grid-template-columns:1fr;gap:18px}
  .demo-steps{justify-content:flex-start}
  .demo-pain-title{grid-template-columns:1fr;gap:20px}
  .demo-method-title{grid-template-columns:1fr;gap:18px}
  .method-layout{grid-template-columns:1fr;gap:28px}
  .method-fig{aspect-ratio:16/10}
  .demo-pain-aside{max-width:420px}
  .pain-panel{grid-template-columns:280px minmax(0,1fr);gap:26px;align-items:center}
  .series-matrix{grid-template-columns:1fr 1fr}
  .series-col:nth-child(2n){border-right:0;padding-right:0}
  .series-col:nth-child(n+3){border-top:1px solid var(--line);padding-top:22px;margin-top:0}
  .series-col:nth-child(3){padding-left:0}
  .demo-metrics{grid-template-columns:1fr 1fr}
  .demo-metrics > div:nth-child(2n){border-right:0;padding-right:0}
  .demo-metrics > div:nth-child(n+3){border-top:1px solid var(--line);padding-top:20px}
  .dfoot-grid{grid-template-columns:1fr 1fr}
  .dfoot-contact{grid-column:1/-1;border-top:1px solid #3a454b;padding-top:20px}
}
@media(max-width:760px){
  .demo-cover{padding:96px 0 20px}
  .demo-cover .wrap{min-height:calc(100svh - 118px)}
  .demo-cover h1{font-size:clamp(32px,9.2vw,40px);line-height:1.12}
  .demo-slogan{margin-top:14px;font-size:13px;line-height:1.7}
  .demo-hero{gap:18px;padding-top:24px}
  .demo-hero-actions{gap:16px}
  .demo-hero-actions .btn-red{font-size:12px;padding:12px 16px}
  .demo-hero-actions .cover-link{font-size:12px}
  .demo-hero-band{margin-top:22px;padding-top:16px;gap:14px}
  .demo-stats{gap:26px}
  .demo-stat b{font-size:25px}
  .demo-stat span{font-size:9px;white-space:normal}
  .demo-steps{gap:7px;font-size:11px}
  .demo-steps i{width:12px}
  .demo-cover .cover-bottom{margin-top:auto;padding-top:16px}
  .demo-cover .cover-scroll,.demo-cover .cover-bottom>span:last-child{display:none}
  .demo-cover .cover-bottom{justify-content:center}
  .demo-pains{padding:76px 0 86px}
  .demo-pain-title{padding-bottom:24px}
  .demo-pain-title h2{font-size:34px}
  .demo-pain-aside b{font-size:38px}
  .demo-pain-aside p{font-size:11px}
  .pain-tab{min-width:112px;padding:13px 14px;font-size:12px}
  .pain-hint{display:block}
  .pain-panel{min-height:0;padding:22px 0 24px}
  .pain-panel{grid-template-columns:1fr;gap:16px;align-items:start}
  .pain-fig{aspect-ratio:16/9}
  .pain-q{font-size:19px;line-height:1.6}
  .pain-go{margin-top:12px}
  .pain-go{font-size:11px}
  .demo-products{padding:76px 0 86px}
  .demo-products-head h2{font-size:32px;line-height:1.3}
  .demo-products-head p{font-size:12px;margin-top:10px}
  .series-matrix{grid-template-columns:1fr 1fr;margin-top:28px}
  .series-col{padding-top:14px;padding-right:12px}
  .series-col:not(:first-child){padding-left:12px}
  .series-col:nth-child(2n){padding-right:0}
  .series-col h3{font-size:20px}
  .series-col p{font-size:10.5px;min-height:3.1em}
  .series-go{font-size:9.5px}
  .demo-sec-foot{flex-wrap:wrap;gap:10px;margin-top:28px}
  .demo-method-title h2{font-size:32px}
  .method-row{grid-template-columns:34px 1fr;gap:10px 14px;padding:15px 0}
  .method-row .no{font-size:28px}
  .method-row .deliver{grid-column:2;text-align:left;padding-top:4px;white-space:normal}
  .method-row .ar{display:none}
  .demo-method-foot{flex-wrap:wrap;gap:10px}
  .demo-cases{padding:76px 0 86px}
  .demo-metrics{margin-top:26px}
  .demo-metrics > div{padding:16px 14px 18px 0}
  .demo-metrics > div + div{padding-left:14px}
  .demo-metrics b{font-size:23px}
  .demo-metrics span{font-size:11px}
  .demo-metrics small{font-size:9px}
  .demo-cases .case-feature{margin-top:28px}
  .dfoot{padding:36px 0 72px}
  .dfoot::before{height:230px;opacity:.12}
  .dfoot-top{align-items:center;padding-bottom:12px}
  .dfoot-brand img{height:30px}
  .dfoot-brand span{display:none}
  .dfoot-word{font-size:72px;margin-right:0}
  .dfoot-cta{grid-template-columns:1fr;gap:18px;padding:20px 0 22px}
  .dfoot-cta h2{font-size:27px}
  .dfoot-cta p{font-size:10.5px}
  .dfoot-grid{grid-template-columns:1fr 1fr;gap:24px;padding:22px 0 24px}
  .dfoot-contact{grid-column:1/-1;padding-top:18px}
  .dfoot-contact .dfoot-tel{font-size:23px}
  .dfoot-bottom{flex-wrap:wrap;gap:6px 18px;font-size:8.5px}
  .demo-faq{padding:76px 0 86px}
  .demo-faq-grid{grid-template-columns:1fr;gap:30px}
  .demo-faq-head h2{font-size:34px}
  .demo-faq-head p{font-size:12px;margin-top:14px}
  .faq-item summary{gap:12px;padding:15px 0}
  .faq-qt{font-size:16px;line-height:1.6}
  .faq-a{padding:0 0 17px;font-size:11.5px}
}
@media(prefers-reduced-motion:reduce){
  .pain-panel.on{animation:none}
}


/* Demo · 右侧联系栏放大 */
.demo-home .rc-side{width:72px}
.demo-home .rc-side-ai{padding:15px 6px 14px;gap:8px}
.demo-home .rc-side-ai img{width:34px;height:34px}
.demo-home .rc-side-ai svg{width:23px;height:23px}
.demo-home .rc-side-ai em{font-size:11px;line-height:1.4}
.demo-home .rc-tel{right:84px}

/* ---------------- FAQ ---------------- */
.demo-faq{padding:100px 0 108px;background:var(--tint-band)}
.demo-faq-grid{display:grid;grid-template-columns:4fr 7fr;gap:64px;align-items:start}
.demo-faq-head h2{margin-top:24px;font-family:var(--serif);font-size:clamp(38px,4.4vw,58px);font-weight:700;line-height:1.3}
.demo-faq-head p{margin-top:18px;font-size:13px;line-height:1.9;color:var(--ink-2);max-width:28em}
.demo-faq-head .arrow-link{display:inline-flex;margin-top:24px;font-size:12.5px}
.faq-list{border-top:1px solid var(--ink)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;align-items:flex-start;gap:16px;padding:18px 0;cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-no{flex:none;font-family:var(--num);font-size:10.5px;letter-spacing:.1em;color:var(--red);padding-top:5px}
.faq-qt{flex:1;font-family:var(--serif);font-size:18px;font-weight:700;line-height:1.6;color:var(--ink);transition:color .25s}
.faq-ic{flex:none;font-family:var(--num);font-size:22px;font-weight:400;line-height:1;color:var(--ink-3);transition:transform .3s var(--ease),color .25s}
.faq-item[open] .faq-qt{color:var(--red)}
.faq-item[open] .faq-ic{transform:rotate(45deg);color:var(--red)}
.faq-a{padding:0 0 20px 32px;font-size:12.5px;line-height:1.9;color:var(--ink-2)}
.faq-a p{max-width:44em}


/* Demo · 为放大后的侧栏让出 12px，避免压住内容（只影响桌面） */
@media(min-width:861px){
  .demo-home .rc-panel{width:410px;height:min(640px,calc(100vh - 48px))}
}

@media(max-width:760px){
  .demo-faq{padding:76px 0 86px}
  .demo-faq-grid{grid-template-columns:1fr;gap:28px}
  .demo-faq-head h2{font-size:34px}
  .demo-faq-head p{font-size:12px;margin-top:14px}
  .faq-item summary{gap:12px;padding:15px 0}
  .faq-qt{font-size:16px;line-height:1.6}
  .faq-a{padding:0 0 17px;font-size:11.5px}
}


/* ---------------- FAQ（平滑展开，不做整页跳变） ---------------- */
.demo-faq{padding:100px 0 108px;background:var(--tint-band)}
.demo-faq-grid{display:grid;grid-template-columns:4fr 7fr;gap:64px;align-items:start}
.demo-faq-head h2{margin-top:24px;font-family:var(--serif);font-size:clamp(38px,4.4vw,58px);font-weight:700;line-height:1.3}
.demo-faq-head p{margin-top:18px;font-size:13px;line-height:1.9;color:var(--ink-2);max-width:28em}
.demo-faq-head .arrow-link{display:inline-flex;margin-top:24px;font-size:12.5px}
.faq-list{border-top:1px solid var(--ink)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q-btn{display:flex;align-items:flex-start;gap:16px;width:100%;padding:18px 0;background:none;border:0;font-family:inherit;text-align:left;cursor:pointer;color:inherit}
.faq-no{flex:none;font-family:var(--num);font-size:10.5px;letter-spacing:.1em;color:var(--red);padding-top:5px}
.faq-qt{flex:1;font-family:var(--serif);font-size:18px;font-weight:700;line-height:1.6;color:var(--ink);transition:color .25s}
.faq-ic{flex:none;font-family:var(--num);font-size:22px;font-weight:400;line-height:1;color:var(--ink-3);transition:transform .32s var(--ease),color .25s}
.faq-item.open .faq-qt{color:var(--red)}
.faq-item.open .faq-ic{transform:rotate(45deg);color:var(--red)}
.faq-a-wrap{display:grid;grid-template-rows:0fr;opacity:0;transition:grid-template-rows .38s var(--ease),opacity .3s ease}
.faq-item.open .faq-a-wrap{grid-template-rows:1fr;opacity:1}
.faq-a{overflow:hidden;min-height:0;padding:0;font-size:inherit;color:inherit}
.faq-a p{padding:0 0 20px 32px;font-size:12.5px;line-height:1.9;color:var(--ink-2);max-width:44em}
@media(max-width:760px){
  .demo-faq{padding:76px 0 86px}
  .demo-faq-grid{grid-template-columns:1fr;gap:28px}
  .demo-faq-head h2{font-size:34px}
  .demo-faq-head p{font-size:12px;margin-top:14px}
  .faq-q-btn{gap:12px;padding:15px 0}
  .faq-qt{font-size:16px;line-height:1.6}
  .faq-a p{padding:0 0 17px;font-size:11.5px}
}
@media(prefers-reduced-motion:reduce){
  .faq-a-wrap{transition:none}
}

/* 方法论的旧版产品介绍排版 · 响应式修正 */
@media(max-width:1100px){
  .demo-products-title{grid-template-columns:1fr;gap:16px}
  .series-matrix{grid-template-columns:1fr 1fr}
  .series-col:nth-child(2n){border-right:0;padding-right:0}
  .series-col:nth-child(n+3){border-top:1px solid var(--line);padding-top:24px}
  .series-col:nth-child(3){padding-left:0}
  .series-col figure{aspect-ratio:4/3}
  .demo-method .cat-row{grid-template-columns:34px 1fr auto 18px}
  .demo-method .cat-fig{display:block;aspect-ratio:16/10}
  .demo-method .cat-thumb{display:none}
  .demo-cases .case-all{grid-column:1/-1;margin-top:0}
}
@media(max-width:760px){
  .demo-products{padding:76px 0 86px}
  .demo-products-head h2{font-size:32px}
  .demo-products-aside p{font-size:12px}
  .demo-products-en{font-size:8.5px;margin-top:12px}
  .series-matrix{margin-top:28px}
  .series-col{padding-top:16px;padding-right:12px}
  .series-col:not(:first-child){padding-left:12px}
  .series-col:nth-child(2n){padding-right:0}
  .series-col figure{aspect-ratio:4/3;margin-bottom:12px}
  .series-badge{left:9px;top:8px;font-size:16px;padding:2px 6px}
  .series-meta{font-size:8px;line-height:1.5}
  .series-col h3{font-size:20px;margin-top:7px}
  .series-col p{font-size:10.5px;min-height:3.2em}
  .series-go{font-size:9.5px}
  .demo-sec-foot{flex-wrap:wrap;gap:10px;margin-top:28px}
  .demo-method .cat-row{grid-template-columns:26px 1fr auto;gap:10px;padding:14px 0}
  .demo-method .cat-row .count{display:block;grid-column:2;text-align:left;padding-top:4px;white-space:normal;font-size:10px;color:var(--red)}
  .demo-method .cat-row .ar{display:none}
  .case-all{font-size:16px;padding:14px 0}
}

@media(max-width:760px){
  .demo-method .catalog-foot{flex-wrap:wrap;gap:10px}
  .demo-method .catalog-foot .arrow-link{white-space:nowrap}
}


/* 数据与 FAQ 的轻微 hover */
.demo-metrics > div{transition:background .3s}
.demo-metrics > div:hover{background:rgba(224,11,22,.025)}
.demo-metrics b{transition:color .25s}
.demo-metrics > div:hover b{color:var(--red)}
.faq-q-btn:hover .faq-qt,.faq-q-btn:hover .faq-ic{color:var(--red)}

/* 首页方法论：留白与 .demo-cases 对齐 */
.demo-method{padding:104px 0 112px}
.method-head{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:56px;align-items:end;margin-top:24px;padding-bottom:22px;border-bottom:1px solid var(--ink)}
.method-head h2{font-family:var(--serif);font-size:clamp(40px,4.4vw,60px);font-weight:700;line-height:1.25}
.method-side p{font-size:12.5px;line-height:1.8;color:var(--ink-2);max-width:28em}
.method-side .arrow-link{margin-top:12px;font-size:12px}
.method-catalog{margin-top:32px}
.method-catalog .cat-row{padding:18px 0}
.method-catalog .cat-row h3{font-size:23px}
.method-catalog .cat-row p{font-size:11.5px;line-height:1.75}
.method-catalog .cat-row .count{font-size:10.5px}
.method-catalog .cat-fig{aspect-ratio:16/10}
@media(max-width:1100px){
  .method-head{grid-template-columns:1fr;gap:14px;padding-bottom:20px}
  .method-head h2{font-size:36px}
  .method-side{max-width:520px}
}
@media(max-width:760px){
  .demo-method{padding:74px 0 84px}
  .method-head h2{font-size:30px}
  .method-side p{font-size:11.5px}
  .method-catalog{margin-top:18px}
  .method-catalog .cat-fig{aspect-ratio:16/10}
}


/* 2026-10-23：撤销此前的「再收一档高度」（padding 80/88、count 9px、p 10.5px），留白与字号已上调 */

/* 首页 · 悬停交互补强 */
.case-main h3,.case-small h3{transition:color .3s}
.case-main:hover h3,.case-small:hover h3{color:var(--red)}
.case-main .result{transition:color .3s}
.case-main:hover .result{color:var(--red)}
.faq-item{transition:background .3s}
.faq-item:hover{background:rgba(224,11,22,.018)}
@media(hover:hover){
  .faq-item:not(.open) .faq-q-btn:hover .faq-ic{transform:rotate(90deg)}
}
.demo-metrics > div{transition:background .3s,transform .35s var(--ease)}
.demo-metrics > div:hover{transform:translateY(-2px)}
.dfoot-col a{transition:color .25s,transform .3s var(--ease)}
.dfoot-col a:hover{transform:translateX(4px)}
.dfoot-tel{transition:color .3s,transform .3s var(--ease)}
.dfoot-tel:hover{color:var(--red);transform:translateX(3px)}
@media(prefers-reduced-motion:reduce){
  .case-main h3,.case-small h3,.case-main .result,.faq-item,.demo-metrics > div,.dfoot-col a,.dfoot-tel{transition:none}
  .demo-metrics > div:hover,.dfoot-col a:hover,.dfoot-tel:hover{transform:none}
}