/* 云秀互动官网 3.0 · 首页
   模块：Hero 关系场 / 现场 / 工作进程堆叠 / 产品剧场 / 宣言 / FDE 剖面 / 路径目录 / 收尾 */

/* ——— Hero：采用 GPT 版（云秀互动官网-连接人与Agent/index.html，v1.5）布局与场景 ——— */
.hero{
  position:relative;overflow:hidden;
  min-height:800px;height:100vh;max-height:980px;
  background:linear-gradient(135deg,#fbfdff 0%,#f4f8ff 44%,#eaf3ff 100%);
}
.hero:before{
  content:"";position:absolute;width:680px;height:680px;right:-80px;top:68px;border-radius:50%;
  background:radial-gradient(circle at 40% 40%,rgba(255,255,255,.96) 0 33%,rgba(178,211,255,.40) 58%,rgba(255,255,255,0) 72%);
  filter:blur(2px);
}
.hero-grid{height:100%;display:grid;grid-template-columns:1.02fr .98fr;align-items:center;position:relative;z-index:3;padding-top:60px}
.hero-copy{max-width:600px}
.hero-copy .kicker{margin-bottom:24px}
.hero-lead{margin:24px 0 0;font-size:23px;line-height:1.45;font-weight:560;color:var(--ink2);letter-spacing:-.015em}
.hero-body{margin:18px 0 0;max-width:440px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:40px}
.scene{height:580px;position:relative;perspective:1000px}
.orb{position:absolute;border-radius:50%;filter:blur(.1px);box-shadow:inset -20px -24px 50px rgba(10,73,186,.22),0 25px 70px rgba(40,100,190,.15);animation:float 7s ease-in-out infinite}
.orb.a{width:112px;height:112px;right:19%;top:12%;background:radial-gradient(circle at 36% 28%,#9bc7ff 0,#2f7cff 38%,#0c49d9 72%,#0736ae 100%)}
.orb.b{width:86px;height:86px;left:22%;top:44%;opacity:.45;background:radial-gradient(circle at 40% 30%,white 0,#cfe3ff 45%,#7aaaff 100%);animation-delay:-2s}
.arch{position:absolute;width:460px;height:610px;right:-2%;top:2%;border:2px solid rgba(255,255,255,.9);border-left-color:rgba(58,113,199,.18);border-radius:50% 50% 0 0/44% 44% 0 0;transform:rotate(13deg);box-shadow:0 0 60px rgba(255,255,255,.7),inset 0 0 80px rgba(107,159,233,.06)}
.ribbon{position:absolute;left:4%;right:-8%;bottom:8%;height:190px;transform:rotate(-5deg);border-radius:52% 70% 0 0;background:linear-gradient(168deg,rgba(250,253,255,.95),rgba(165,204,255,.42) 45%,rgba(255,255,255,.05) 76%);filter:blur(.2px);box-shadow:0 -16px 52px rgba(70,128,205,.12)}
/* ——— 关系场：人 ⇄ Agent（1.9.7 重做：弃人形剪影+机器人，改双节点+渐变连线+行进信号，与关于页缎带语言同源）——— */
.linkline{position:absolute;inset:0;width:100%;height:100%;z-index:2}
.linkline-path{stroke:url(#heroLink);stroke-width:2.2;stroke-linecap:round;opacity:.8}
.linkline-pulse{stroke:#8fd6ff;stroke-width:2.4;stroke-linecap:round;opacity:0}
html.motion .linkline-pulse{opacity:1;stroke-dasharray:.12 .88;animation:hero-link 5.2s cubic-bezier(.45,.08,.4,.98) infinite}
@keyframes hero-link{from{stroke-dashoffset:1}to{stroke-dashoffset:-1}}
.pnode{position:absolute;z-index:4;transform:translateX(-50%);display:grid;justify-items:center;gap:3px;text-align:center}
.pnode b{font-size:15px;line-height:1.2;font-weight:650;color:var(--ink)}
.pnode span{font-size:11px;line-height:1.4;letter-spacing:.04em;color:var(--muted2);white-space:nowrap}
.pnode .pdot{width:14px;height:14px;border-radius:50%;margin-bottom:5px;margin-top:-7px}
.pnode.is-human{left:12%;top:66%}
.pnode.is-human .pdot{background:#0b2a4a;border:2.5px solid #fff;box-shadow:0 0 0 1.5px rgba(18,104,255,.35),0 8px 20px rgba(18,104,255,.18)}
.pnode.is-agent{left:86%;top:38%}
.pnode.is-agent .pdot{background:radial-gradient(circle at 35% 30%,#7db4ff,#1268ff 62%,#0a56d6);box-shadow:0 0 0 1.5px rgba(18,104,255,.35),0 0 16px rgba(18,104,255,.45),0 8px 20px rgba(18,104,255,.2)}
@keyframes float{50%{transform:translateY(-18px) scale(1.02)}}

/* ——— 现场：三张纪实照片 ——— */
.reality{padding:118px 0 106px}
.reality-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:54px}
.rfig{position:relative;margin:0;border-radius:26px;overflow:hidden;background:#e7eef7;aspect-ratio:3/2}
.rfig img{width:100%;height:100%;object-fit:cover;transform:scale(1.04);filter:saturate(.94) contrast(.98);transition:filter 1.2s var(--ease)}
html:not(.motion) .rfig img{transition:transform 1.2s var(--ease),filter 1.2s var(--ease)}
html:not(.motion) .rfig:hover img{transform:scale(1.09);filter:saturate(1)}
.rfig figcaption{
  position:absolute;left:14px;bottom:12px;padding:8px 13px;border-radius:11px;
  background:rgba(7,21,37,.74);color:#e8f1fc;font-size:12px;font-weight:600;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.reality-note{margin-top:22px}

/* ——— 工作进程：粘性堆叠三幕 ——— */
.workflow{padding:126px 0 128px;background:linear-gradient(180deg,#f7fbff,#f1f7ff)}
.stack{display:grid;gap:26px;margin-top:58px}
.stack-item{position:sticky;top:96px}
.stack-card{
  display:grid;grid-template-columns:352px minmax(0,1fr);min-height:446px;
  border-radius:var(--r-lg);background:#fff;border:1px solid var(--line);
  box-shadow:0 34px 80px rgba(20,64,115,.11);overflow:hidden;
  transform-origin:50% 0;
}
.stack-copy{padding:40px 34px;border-right:1px solid var(--line);display:flex;flex-direction:column}
.stack-no{font-size:11px;letter-spacing:.18em;font-weight:700;color:var(--blue)}
.stack-copy h3{margin:18px 0 0;font-size:22px;line-height:1.32;font-weight:620;letter-spacing:-.02em}
.stack-copy .body{margin-top:14px;font-size:13.5px}
.stack-tags{margin-top:auto;padding-top:26px;display:flex;flex-wrap:wrap;gap:8px}
.stag{padding:6px 12px;border-radius:999px;border:1px solid #dbe7f5;background:#f7fbff;font-size:11.5px;color:#3f5a76}
.stack-panel{padding:30px;background:linear-gradient(160deg,#fbfdff,#f1f7ff);display:flex;align-items:center}

/* ——— 产品 UI 通用件 ——— */
.ui{width:100%;background:#fff;border:1px solid #dfe8f3;border-radius:20px;overflow:hidden;box-shadow:0 18px 46px rgba(22,64,111,.08)}
.ui-bar{
  height:46px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;
  border-bottom:1px solid #e9eff7;font-size:11px;letter-spacing:.08em;color:#6d8299;font-weight:650;
}
.ui-live{display:inline-flex;align-items:center;gap:7px;color:#22875f;font-weight:700}
.ui-live::before{content:"";width:7px;height:7px;border-radius:50%;background:#2cbf86;box-shadow:0 0 0 4px rgba(44,191,134,.16)}
/* 等待人工态：文字与圆点同为琥珀，不再绿点配琥珀字 */
.ui-live.is-wait{color:#9a6000}
.ui-live.is-wait::before{background:#e2a93c;box-shadow:0 0 0 4px rgba(226,169,60,.16)}
.ui-rows{padding:4px 0}
.ui-row{
  display:grid;grid-template-columns:96px minmax(0,1fr) auto;gap:16px;align-items:center;
  padding:15px 20px;border-bottom:1px solid #eef3f9;font-size:13px;
  transition:background .4s var(--ease);
}
.ui-row:last-child{border-bottom:0}
.ui-row b{font-size:11.5px;font-weight:600;color:#7b8ea3}
.ui-row strong{font-weight:600;color:#1c3a58}
.ui-row.is-live{background:linear-gradient(90deg,#f2f8ff,rgba(242,248,255,0))}
.tag{font-size:11px;font-weight:700;padding:4px 10px;border-radius:999px;background:#eaf3ff;color:#1766bd;white-space:nowrap}
.tag.is-ok{background:#e3f5ec;color:#187b56}
.tag.is-wait{background:#fff3dd;color:#9a6000}
.tag.is-run{background:#e8f1ff;color:#14509e}
.ui-confirm{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:14px 20px;border-top:1px solid #e9eff7;background:#f8fbff;font-size:12px;color:#4d6a88;
}
.ui-btn{
  display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;
  background:var(--blue);color:#fff;font-size:12px;font-weight:700;
}
.ui-btn.is-wait{background:#fff;color:#9a6000;border:1px solid #f0d9ab}

/* ——— 产品区：取自 GPT 版 v1.5（products + value 界面）原样保留 ——— */
.products{padding:118px 0;background:#071525;color:#fff;position:relative;overflow:hidden}
.products:before{content:"";position:absolute;width:900px;height:900px;border-radius:50%;right:-280px;top:-360px;background:radial-gradient(circle,rgba(40,109,220,.34),rgba(8,25,43,0) 65%)}
.products .kicker{font-size:10px;letter-spacing:.28em;color:#8297b2;text-transform:uppercase;margin-bottom:18px}
.products .section-head{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px;margin-bottom:58px;position:relative;align-items:end}
/* 1.9.7 复审：节标题收回全站 h2 字阶（原 46px 固定值在中窄视口反超 Hero 主标） */
.products .section-head h2{font-size:clamp(28px,2.5vw,36px);line-height:1.16;letter-spacing:-.035em;font-weight:400;margin:0}
.products .section-desc{font-size:16px;line-height:1.95;color:#9aabbe;max-width:700px;margin:0 0 3px}
.product-tabs{display:flex;gap:10px;margin-bottom:42px;position:relative}
.tab{border:1px solid rgba(255,255,255,.16);background:transparent;color:#aebdce;border-radius:999px;padding:12px 19px;cursor:pointer;transition:.25s;font-size:13px}
.tab.active{background:white;color:#0b1624}
.product-panel{display:none;grid-template-columns:.88fr 1.12fr;gap:64px;align-items:center;position:relative}
.product-panel.active{display:grid}
/* 1.9.7 复审：产品名 h3 原 54px/350 全站最大、压过 H1，收回 44px/500（字阶不再倒挂，细字重低分屏发虚一并解决） */
.product-panel h3{font-size:clamp(38px,3.4vw,44px);font-weight:500;letter-spacing:-.04em;margin:0 0 18px}
.product-panel p{font-size:16px;line-height:1.9;color:#9eb0c4;max-width:520px}
.product-label{font:500 9px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.18em;color:#7f95b0;text-transform:uppercase;margin-bottom:10px}
.product-punch{font-size:20px;line-height:1.5;color:#fff;font-weight:500;margin:-8px 0 8px;letter-spacing:-.015em}
.feature-list{margin:30px 0 0;padding:0;list-style:none;display:grid;gap:15px}
.feature-list li{display:flex;gap:12px;align-items:center;color:#dce7f3;font-size:14px}
.feature-list li:before{content:"";width:6px;height:6px;border-radius:50%;background:#5b9cff;box-shadow:0 0 12px #5b9cff}
.product-deep-link{display:inline-flex;align-items:center;gap:9px;margin-top:26px;padding-bottom:5px;border-bottom:1px solid rgba(136,178,255,.45);font-size:12px;color:#dfeaff}
.product-deep-link span{color:#76a8ff}
.product-visual{height:480px;border-radius:32px;background:linear-gradient(145deg,rgba(255,255,255,.09),rgba(255,255,255,.025));border:1px solid rgba(255,255,255,.12);box-shadow:inset 0 1px 0 rgba(255,255,255,.08);position:relative;overflow:hidden;display:grid;place-items:center}
.value-ui{padding:28px}
.value-screen{width:88%;min-height:340px;border-radius:20px;background:#f8fbff;color:#14263c;box-shadow:0 30px 90px rgba(0,0,0,.36);overflow:hidden;transition:.4s;transform:perspective(900px) rotateY(-4deg) rotateX(2deg)}
.value-ui:hover .value-screen{transform:perspective(900px) rotateY(0) rotateX(0) translateY(-4px)}
.value-head{height:46px;border-bottom:1px solid #e4ebf5;display:flex;align-items:center;justify-content:space-between;padding:0 16px;font-size:10px;color:#72839a}
.value-head b{font-weight:600;color:#293d55}
.value-body{display:grid;grid-template-columns:132px 1fr;min-height:294px}
.value-side{background:#eef4fb;border-right:1px solid #e0e8f2;padding:16px 12px;display:grid;align-content:start;gap:8px}
.value-nav{height:29px;border-radius:8px;background:#f9fbfe;border:1px solid #e0e8f2;font-size:9px;display:flex;align-items:center;padding:0 9px;color:#77889a}
.value-nav.active{border-color:#a9c9ff;background:#f5f9ff;color:#1758bd}
.value-main{padding:17px}
.value-title{display:flex;align-items:center;justify-content:space-between;font-size:11px}
.value-title b{font-weight:600}
.value-status{font-size:9px;color:#2565c8;background:#e9f1ff;border-radius:999px;padding:5px 8px;white-space:nowrap}
.value-cards{display:grid;gap:10px;margin-top:15px}
.value-card{border:1px solid #e1e8f2;background:#fff;border-radius:11px;padding:12px}
.value-card strong{font-size:10px;font-weight:600}
.value-card p{font-size:9px;line-height:1.55;color:#7a8998;margin:5px 0 0}
.value-action{margin-top:10px;border-top:1px solid #edf1f6;padding-top:9px;display:flex;justify-content:space-between;gap:12px;font-size:9px;color:#7c8b9c}
.value-action b{color:#1d61ca;font-weight:600;white-space:nowrap}
.value-chat{padding:16px;display:grid;gap:9px;min-height:294px;background:#f9fbff}
.value-chat-head{display:flex;justify-content:space-between;align-items:center;font-size:10px;color:#6f8095;margin-bottom:3px}
.value-bubble{width:76%;padding:10px 12px;background:#eaf2ff;border-radius:13px 13px 13px 4px;font-size:9px;line-height:1.5;color:#40536b}
.value-bubble.me{width:68%;margin-left:auto;background:#1268ff;color:white;border-radius:13px 13px 4px 13px}
.value-lead{margin-top:1px;border:1px solid #d7e5fb;background:#fff;border-radius:11px;padding:11px;font-size:9px;color:#697b90;display:grid;gap:5px}
.value-lead strong{color:#23384f;font-size:10px}
.value-handoff{display:flex;justify-content:space-between;gap:12px;border-top:1px solid #ebf0f7;padding-top:8px;margin-top:4px}
.value-handoff b{color:#1c62ce;white-space:nowrap}

/* ——— 宣言：编辑式大字（页面中段焦点，非 Hero） ——— */
.statement{position:relative;background:#fff;padding:152px 0 140px;overflow:clip}
.statement .wrap{position:relative;z-index:1}
.statement .wrap::after{
  content:"";position:absolute;right:-4%;top:50%;width:min(44vw,540px);aspect-ratio:1;
  transform:translateY(-50%);border-radius:50%;pointer-events:none;
  background:radial-gradient(closest-side,rgba(18,104,255,.075),rgba(18,104,255,.02) 60%,transparent 72%);
}
.statement .kicker{margin-bottom:30px;letter-spacing:.2em}
.statement-line{
  margin:0;font-family:var(--font-display);
  font-size:clamp(40px,5.3vw,72px);line-height:1.14;letter-spacing:-.04em;font-weight:620;color:var(--ink);
}
.statement-line .hl{color:var(--blue);font-style:normal}
.statement-line + .statement-line{margin-top:4px}
.statement-note{margin-top:38px;display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted2)}
.statement-note::before{content:"";width:46px;height:1px;background:#c3d4e8}

/* ——— FDE 剖面 ——— */
.bridge{padding:120px 0 126px;background:#f6faff}
.bridge-diagram{position:relative;margin-top:58px;display:grid;grid-template-columns:1fr 1.12fr 1fr;gap:20px;align-items:center}
.bridge-diagram::before{
  content:"";position:absolute;left:6%;right:6%;top:50%;height:2px;z-index:0;
  background:linear-gradient(90deg,transparent,#bcd6f4 10%,#bcd6f4 90%,transparent);
  transform:scaleX(1);transform-origin:left;
}
html.motion .bridge-diagram:not(.is-in)::before{transform:scaleX(0)}
html.motion .bridge-diagram.is-in::before{transform:scaleX(1);transition:transform 1.1s var(--ease) .25s}
.bnode{
  position:relative;z-index:1;padding:26px 24px;border-radius:24px;border:1px solid #d9e6f5;
  background:#fff;box-shadow:0 18px 44px rgba(20,64,115,.06);
}
.bnode b{display:block;margin-bottom:12px;font-size:11px;letter-spacing:.16em;font-weight:700;color:var(--blue)}
.bnode strong{display:block;font-size:17px;font-weight:620;color:var(--ink2);letter-spacing:-.01em}
.bnode span{display:block;margin-top:8px;font-size:12.5px;line-height:1.7;color:var(--muted2)}
.bnode.is-core{
  padding:34px 30px;border-color:#1e3a5a;
  background:linear-gradient(160deg,#0b1f38,#12314f);
  box-shadow:0 30px 74px rgba(7,21,37,.28);
}
.bnode.is-core b{color:#76aaff}
.bnode.is-core strong{color:#fff;font-size:21px}
.bnode.is-core span{color:#a9bdd4}
.bridge-actions{margin-top:36px;display:flex;gap:18px;align-items:center;flex-wrap:wrap}

/* ——— 路径目录 ——— */
.paths{padding:120px 0 112px}
.path-list{margin-top:52px;border-top:1px solid var(--line)}
.prow{
  position:relative;
  display:grid;grid-template-columns:86px minmax(0,1fr) minmax(0,340px) auto;gap:28px;align-items:center;
  padding:38px 0 38px 2px;border-bottom:1px solid var(--line);
  transition:background .35s var(--ease),padding .35s var(--ease);
}
.prow::before{
  content:"";position:absolute;left:0;top:50%;width:3px;height:0;border-radius:3px;
  background:var(--blue);transform:translateY(-50%);
  transition:height .38s var(--ease);
}
.prow:hover{background:linear-gradient(90deg,rgba(237,245,255,.92),rgba(237,245,255,0));padding-left:16px}
.prow:hover::before{height:58%}
.prow .pno{font-size:12px;letter-spacing:.16em;font-weight:700;color:#93a7bc}
.prow h3{font-size:21px;line-height:1.35;font-weight:620;letter-spacing:-.02em;margin:0;color:var(--ink)}
.prow .body{font-size:13.5px}
.prow .go{
  display:grid;place-items:center;width:42px;height:42px;border-radius:50%;
  border:1px solid #c9dcf3;color:#1355b4;font-size:15px;
  transition:transform .35s var(--ease),background .35s var(--ease);
}
.prow:hover .go{transform:translateX(6px);background:#e9f3ff}

/* ——— 收尾 ——— */
.close{background:var(--navy);color:#fff;padding:100px 0}
.close-grid{display:grid;grid-template-columns:1.15fr auto;gap:44px;align-items:center}
.close .h2{color:#fff;max-width:580px}
.close .body{margin-top:16px;max-width:460px;color:#aebfd3}

/* ——— 断点 ——— */
@media(max-width:1080px){
  .hero{height:auto;min-height:900px;max-height:none}
  .hero-grid{grid-template-columns:1fr;padding-top:140px;padding-bottom:40px}
  .scene{height:420px;margin-top:20px}
  .hero:before{width:430px;height:430px;right:-170px;top:105px;opacity:.9}
  .display{font-size:clamp(32px,4.6vw,40px)}
  .statement-line{font-size:36px}
  .menu-btn{min-height:44px}
  .tab{min-height:44px}
  .products .section-head{grid-template-columns:1fr;gap:14px}
  .product-panel{grid-template-columns:1fr}
  .arch{width:275px;height:370px;right:2%;top:0;transform:rotate(10deg);opacity:.86}
  .ribbon{left:-6%;right:-12%;height:120px;bottom:7%;opacity:.8}
  .orb.a{width:78px;height:78px;right:18%;top:7%}
  .orb.b{width:64px;height:64px;left:18%;top:43%;opacity:.34}
  .pnode b{font-size:14px}
  .pnode span{font-size:10px}
  .stack-card{grid-template-columns:300px minmax(0,1fr)}
  .prow{grid-template-columns:70px minmax(0,1fr) auto}
  .prow .body{grid-column:2;margin-top:6px}
  .close-grid{grid-template-columns:1fr;gap:30px}
}
@media(max-width:860px){
  .reality-row{grid-template-columns:1fr 1fr}
  .rfig:last-child{grid-column:1/-1;aspect-ratio:auto;height:210px}
  .rfig:last-child img{object-position:50% 10%}
  .bridge-diagram{grid-template-columns:1fr}
  .bridge-diagram::before{left:50%;right:auto;top:8%;bottom:8%;width:2px;height:auto;transform:scaleY(1);transform-origin:top;background:linear-gradient(180deg,transparent,#bcd6f4 12%,#bcd6f4 88%,transparent)}
  html.motion .bridge-diagram:not(.is-in)::before{transform:scaleY(0)}
  html.motion .bridge-diagram.is-in::before{transform:scaleY(1)}
  .product-deep-link{min-height:44px;display:inline-flex;align-items:center}
  .products{padding:88px 0}
  .products .section-head{grid-template-columns:1fr;gap:14px;margin-bottom:32px}
  .products .section-head h2{font-size:26px}
  .product-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;border:1px solid rgba(255,255,255,.12);border-radius:999px;background:rgba(11,30,51,.78);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}
  .tab{border:0;padding:11px 12px;font-size:12px}
  .product-panel{gap:30px}
  .product-panel h3{font-size:30px;margin-bottom:12px}
  .product-panel p{font-size:14px;line-height:1.82}
  .product-punch{font-size:18px;margin:-4px 0 6px}
  .feature-list{gap:12px;margin-top:24px}
  .feature-list li{font-size:13px;line-height:1.55;align-items:flex-start}
  .feature-list li:before{margin-top:7px;flex:0 0 auto}
  .product-deep-link{margin-top:22px;font-size:11px}
  .product-visual{height:396px;border-radius:24px}
  .value-ui{padding:16px}
  .value-screen{width:96%;min-height:0;height:92%;border-radius:16px;transform:none}
  .value-ui:hover .value-screen{transform:none}
  .value-head{height:40px;padding:0 12px;font-size:9px}
  .value-body{grid-template-columns:1fr;min-height:calc(100% - 40px)}
  .value-side{display:none}
  .value-main{padding:11px}
  .value-title{font-size:10px}
  .value-status{font-size:8.5px;padding:4px 7px}
  .value-cards{gap:7px;margin-top:10px}
  .value-card{padding:9px;border-radius:9px}
  .value-card strong{font-size:10px}
  .value-card p{font-size:9px;line-height:1.5;margin-top:4px}
  .value-action{font-size:9px;margin-top:8px;padding-top:8px}
  .value-chat{min-height:calc(100% - 40px);padding:11px;gap:8px}
  .value-chat-head{font-size:9.5px}
  .value-bubble{font-size:9.5px;padding:9px 10px}
  .value-lead{font-size:9px;padding:9px;gap:5px}
  .value-lead strong{font-size:10px}
  .value-handoff{font-size:9px;padding-top:7px}
  .stack-card{grid-template-columns:1fr;min-height:0}
  .stack-copy{border-right:0;border-bottom:1px solid var(--line);padding:30px 26px}
  .stack-tags{margin-top:22px;padding-top:0}
  .stack-panel{padding:22px}
  /* 三幕改横向滑动（手机与平板通用），减少竖向长卷 */
  .stack{
    margin-top:34px;gap:12px;display:flex;align-items:stretch;
    overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
    overscroll-behavior-x:contain;scrollbar-width:none;
    padding:2px 2px 10px;scroll-padding-left:2px;
  }
  .stack::-webkit-scrollbar{display:none}
  .stack-item{position:static;flex:0 0 86%;min-width:0;display:flex;scroll-snap-align:start}
  .stack-item .stack-card{width:100%}
  .statement{padding:110px 0 100px}
}
@media(max-width:720px){
  /* ——— 移动端压缩：缩短总长度、重排密度 ——— */
  .scene{height:280px;margin:10px 0 0}
  .arch{right:-12%;width:275px;height:370px;top:-4%;transform:rotate(10deg);opacity:.86}
  .orb.a{right:15%;top:5%}
  .pnode b{font-size:13px}
  .pnode span{font-size:10px}
  .hero{min-height:0;padding:104px 0 0}
  .hero-grid{padding-top:0;padding-bottom:0}
  .hero-lead{font-size:17px;margin-top:14px}
  .hero-body{margin-top:12px}
  .hero-btns{margin-top:24px}
  .hero-btns .btn{width:100%}
  /* 现场：两列 + 第三张通栏（不再三连竖排） */
  .reality{padding:58px 0 52px}
  .reality-row{grid-template-columns:1fr 1fr;gap:10px;margin-top:26px}
  .rfig{border-radius:20px}
  .rfig:last-child{grid-column:1/-1;aspect-ratio:auto;height:196px}
  .rfig figcaption{left:10px;bottom:9px;padding:6px 10px;font-size:11px}
  /* 工作进程：卡片与界面行全面收窄（横向滑动规则在 ≤860 段） */
  .workflow{padding:52px 0}
  .stack{margin-top:24px}
  .stack-card{border-radius:20px}
  .stack-copy{padding:22px 20px}
  .stack-copy h3{font-size:19px;margin-top:12px}
  .stack-tags{margin-top:16px;gap:6px}
  .stack-panel{padding:14px}
  .ui{border-radius:16px}
  .ui-bar{height:40px;padding:0 12px}
  .ui-row{grid-template-columns:50px minmax(0,1fr) auto;gap:8px;padding:9px 11px;font-size:12.5px}
  .ui-row strong{font-size:12.5px}
  .ui-row .tag{justify-self:end}
  .ui-rows{padding:2px 0}
  .ui-confirm{padding:11px 12px;font-size:11.5px}
  .ui-btn{padding:7px 13px;font-size:11.5px}
  /* 产品：收紧段内留白 */
  .products{padding:72px 0}
  .products .section-head{margin-bottom:26px}
  .product-tabs{margin-bottom:28px}
  .product-panel{gap:24px}
  /* 宣言 */
  .statement{padding:64px 0 58px}
  .statement-line{font-size:32px;line-height:1.18}
  .product-panel h3{font-size:26px}
  .statement .kicker{margin-bottom:16px}
  /* FDE 剖面 */
  .bridge{padding:52px 0 56px}
  .bridge-diagram{margin-top:20px;gap:8px}
  .bnode{padding:15px 14px;border-radius:16px}
  .bnode.is-core{padding:17px 16px}
  .bnode strong{font-size:16px}
  .bnode.is-core strong{font-size:18px}
  .bnode span{font-size:12px;margin-top:6px}
  .bridge-actions{margin-top:24px;gap:12px}
  /* 路径目录 */
  .paths{padding:52px 0 48px}
  .path-list{margin-top:22px}
  .prow{grid-template-columns:40px minmax(0,1fr) auto;gap:12px;padding:15px 0}
  .prow h3{font-size:16px;font-weight:600}
  .prow .body{font-size:13px;margin-top:4px}
  .prow .go{width:36px;height:36px}
  /* 收尾与页脚（页脚布局与内边距全权走 core.css 共享断点） */
  .close{padding:52px 0}
  .close .btn{width:100%}
  .close .h2{font-size:26px}
  /* 首页 Hero 主标字号属页面人格（其余字阶走 core 共享） */
  .display{font-size:clamp(30px,7.2vw,32px)}
}
@media(prefers-reduced-motion:reduce){
  .rfig img{transition:none}
  .rfig:hover img{transform:scale(1.04);filter:saturate(.94)}
  .prow,.prow:hover{padding-left:2px;background:none}
  .prow::before,.prow:hover::before{height:0}
  .prow:hover .go{transform:none;background:none}
  .statement .wrap::after{display:none}
}

@media(max-width:430px){
  .statement-line{font-size:28px;line-height:1.2}
  .statement{padding:52px 0 46px}
}


/* === GPT 1.9.8 · semantic business map / proof === */
.semantic-band{padding:74px 0 88px;background:linear-gradient(180deg,#fff 0%,#f6faff 100%);border-top:1px solid var(--line)}
.semantic-head{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:end}.semantic-head .kicker{grid-column:1/-1;margin-bottom:-32px}.semantic-head .body{max-width:590px}
.semantic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:44px}.semantic-card{display:flex;flex-direction:column;min-height:230px;padding:26px;border:1px solid var(--line);border-radius:24px;background:rgba(255,255,255,.88);box-shadow:0 12px 36px rgba(20,64,115,.045);transition:transform .35s var(--ease),border-color .35s var(--ease),box-shadow .35s var(--ease)}.semantic-card:hover{transform:translateY(-4px);border-color:rgba(18,104,255,.28);box-shadow:var(--sh-soft)}.semantic-card span{font-size:10.5px;letter-spacing:.1em;color:var(--blue);font-weight:700}.semantic-card strong{margin-top:13px;font-size:20px;line-height:1.35}.semantic-card p{margin:14px 0 22px;font-size:13.5px;line-height:1.75;color:var(--muted)}.semantic-card i{margin-top:auto;font-style:normal;font-size:12.5px;font-weight:650;color:#1355b4}
.proof-band{padding:96px 0;background:#fff;border-top:1px solid var(--line)}.proof-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:74px;align-items:center}.proof-copy .h2{margin-top:14px}.proof-copy .body{margin-top:20px;max-width:540px}.proof-copy .link-arrow{margin-top:24px}.proof-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.proof-fact{min-height:220px;padding:24px;border:1px solid var(--line);border-radius:24px;background:linear-gradient(180deg,#fbfdff,#f5f9ff)}.proof-fact b{display:block;font-family:var(--font-display);font-size:44px;line-height:1;color:var(--blue);letter-spacing:-.04em}.proof-fact span{display:block;margin-top:18px;font-size:13.5px;font-weight:650;color:var(--ink)}.proof-fact p{margin:12px 0 0;font-size:12.5px;line-height:1.75;color:var(--muted)}
@media(max-width:860px){.semantic-band{padding:56px 0 64px}.semantic-head{grid-template-columns:1fr;gap:14px}.semantic-head .kicker{grid-column:auto;margin-bottom:0}.semantic-grid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:12px;margin-top:28px;padding-bottom:4px;scrollbar-width:none}.semantic-grid::-webkit-scrollbar{display:none}.semantic-card{min-width:82%;min-height:220px;scroll-snap-align:start}.proof-band{padding:72px 0}.proof-grid{grid-template-columns:1fr;gap:34px}.proof-facts{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:12px;scrollbar-width:none}.proof-facts::-webkit-scrollbar{display:none}.proof-fact{min-width:78%;min-height:205px;scroll-snap-align:start}}

/* ——— Hero 主标强化（2026-09-21 主人定稿）：关键词品牌渐变 ＋ 横线 ＋ 右端 ∞ ———
   渐变取品牌三色 #087FE1 → #11D8E9 → #0757E1，不用非品牌色。
   主标文字一字未改（拼接后仍逐字等于冻结主标「链接人与 Agent」）。 */
.hero .h1-grad{color:#0a5fe0;font-weight:660;letter-spacing:-.02em;font-size:1.1em}
@supports (-webkit-background-clip:text){.hero .h1-grad{background:linear-gradient(100deg,#0a5fe0 0%,#11c4e6 52%,#087fe1 100%);-webkit-background-clip:text;background-clip:text;color:transparent}}
.hero-rule{position:relative;height:2px;margin-top:24px;width:min(calc(100% - 40px),360px);border-radius:2px;background:linear-gradient(90deg,#1268ff,rgba(17,216,233,.6) 58%,rgba(17,216,233,0))}
.hero-rule span{position:absolute;right:-34px;top:50%;transform:translateY(-56%);font-family:var(--font-display);font-size:22px;line-height:1;font-weight:600;color:#1268ff}
@media(max-width:860px){.hero-rule{margin-top:20px;width:min(calc(100% - 34px),320px)}.hero-rule span{right:-30px;font-size:19px}}