/* ============ 智合经纬 · 工业级 AI 设计系统 ============ */
:root{
  --bg:#070B16;
  --bg-soft:#0C1120;
  --panel:#0F1626;
  --panel-2:#131C30;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#E7ECF5;
  --muted:#9AA6BD;
  --muted-2:#6B768F;
  --brand:#2D6BFF;
  --brand-2:#19E0D0;
  --accent:#FF8A3D;
  --grad:linear-gradient(120deg,#2D6BFF 0%,#5B8CFF 45%,#19E0D0 100%);
  --grad-warm:linear-gradient(120deg,#FF8A3D 0%,#FFB45C 100%);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 24px 60px -20px rgba(8,16,40,.55);
  --maxw:90vw;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:min(var(--maxw),96vw);margin:0 auto;padding:0 24px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-2);font-weight:600;}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand-2);display:inline-block;}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.warm-text{color:var(--accent);}
section{padding:96px 0;position:relative;}
/* ---- 背景铺满、内容居中：各区块铺满全宽背景，卡片内容仍居中限宽 ---- */
section{background:var(--bg);}
section.matrix,section.arch,section.steps,section.core-cap,section.ind,section.security{background:linear-gradient(180deg,var(--bg-soft),var(--bg));}
section.why,section.results{background:linear-gradient(180deg,var(--bg),var(--bg-soft));}
section.cta{background:radial-gradient(700px 360px at 50% -20%,rgba(45,107,255,.32),transparent 60%),var(--bg);}
section.hero{background:radial-gradient(1000px 520px at 70% -10%,rgba(45,107,255,.28),transparent 60%),radial-gradient(600px 360px at 8% 110%,rgba(25,224,208,.12),transparent 60%),var(--bg);}
.sec-head{max-width:780px;margin:0 auto 56px;text-align:center;}
.sec-head h2{font-size:clamp(26px,3.4vw,40px);font-weight:750;letter-spacing:-.01em;margin:14px 0 14px;}
.sec-head p{color:var(--muted);font-size:17px;}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:650;font-size:14.5px;padding:11px 20px;border-radius:999px;transition:transform .15s ease,box-shadow .25s ease,background .25s;border:1px solid transparent;cursor:pointer;white-space:nowrap;}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px -10px rgba(45,107,255,.7);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px -10px rgba(45,107,255,.85);}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line-strong);color:var(--text);}
.btn-ghost:hover{background:rgba(255,255,255,.09);}
.btn-light{background:#fff;color:#0E1525;}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 30px -12px rgba(0,0,0,.4);}
.btn-sm{padding:9px 16px;font-size:13.5px;}

/* nav */
header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(160%) blur(14px);background:rgba(7,11,22,.74);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px;}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:18px;letter-spacing:.02em;}
.logo .mark{width:30px;height:30px;border-radius:8px;background:var(--grad);display:grid;place-items:center;box-shadow:0 6px 18px -6px rgba(45,107,255,.6);}
.logo .mark svg{width:18px;height:18px;}
.logo small{display:block;font-size:10px;letter-spacing:.22em;color:var(--muted);font-weight:600;margin-top:1px;}
.nav-links{display:flex;gap:26px;font-size:14.5px;color:var(--muted);position:relative;}
.nav-links > a{transition:color .2s;display:flex;align-items:center;gap:5px;}
.nav-links > a:hover,.nav-links > a.active{color:var(--text);}

/* mega menu dropdown */
.nav-item{position:relative;}
.nav-item > a::after{content:"";display:inline-block;width:7px;height:7px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translate(-1px,-2px);margin-left:4px;opacity:.55;transition:transform .2s,opacity .2s;}
.nav-item:hover > a::after{transform:rotate(45deg) translate(-3px,-4px);opacity:1;color:var(--brand-2);}
.nav-item:hover > a{color:var(--text);}
/* nav-item 下沿延展 14px，hover 区域覆盖 link 与 drop 之间的间隙，避免快速划过时消失 */
.nav-item::after{content:"";position:absolute;left:0;right:0;top:100%;height:14px;pointer-events:auto;background:transparent;z-index:99;}
.nav-drop{position:absolute;top:calc(100% + 4px);left:50%;transform:translateX(-50%) translateY(8px);min-width:620px;background:linear-gradient(180deg,var(--panel-2),rgba(12,17,32,.98));border:1px solid var(--line-strong);border-radius:18px;padding:28px 30px;box-shadow:0 24px 60px -16px rgba(0,0,0,.6),0 0 0 1px rgba(255,255,255,.04) inset;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .25s ease,transform .25s ease,visibility .25s;z-index:100;}
.nav-item:hover .nav-drop{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0);}
.nav-item .nav-drop._kb-show{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0);}
.drop-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px 36px;}
.drop-col h5{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--brand-2);font-weight:700;margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--line);}
.drop-col ul{list-style:none;display:flex;flex-direction:column;gap:6px;}
.drop-col li a{display:flex;align-items:center;gap:8px;font-size:14px;color:#C7D0E2;padding:6px 8px;border-radius:8px;transition:.15s;}
.drop-col li a:hover{background:rgba(45,107,255,.12);color:#fff;}
.drop-col li a .d-icon{width:32px;height:32px;border-radius:8px;background:rgba(45,107,255,.1);border:1px solid rgba(45,107,255,.2);display:grid;place-items:center;font-size:15px;flex-shrink:0;}
.drop-col li a .d-text b{display:block;font-size:14px;font-weight:650;line-height:1.3;}
.drop-col li a .d-text span{font-size:12px;color:var(--muted-2);}
.drop-highlight{grid-column:1/-1;background:rgba(45,107,255,.06);border:1px solid rgba(45,107,255,.18);border-radius:14px;padding:18px 20px;display:flex;align-items:center;gap:16px;margin-top:8px;}
.drop-highlight .dh-icon{width:44px;height:44px;border-radius:12px;background:var(--grad);display:grid;place-items:center;font-size:20px;flex-shrink:0;}
.drop-highlight .dh-text h6{font-size:15px;font-weight:700;color:#fff;margin-bottom:2px;}
.drop-highlight .dh-text p{font-size:13px;color:var(--muted);}
.drop-highlight .dh-cta{margin-left:auto;flex-shrink:0;}
.nav-cta{display:flex;gap:12px;align-items:center;}
.menu-btn{display:none;background:none;border:1px solid var(--line-strong);border-radius:10px;width:42px;height:42px;color:var(--text);font-size:18px;}

/* hero */
.hero{padding:74px 0 60px;background:
  radial-gradient(900px 520px at 78% -8%,rgba(45,107,255,.28),transparent 60%),
  radial-gradient(720px 460px at 8% 12%,rgba(25,224,208,.16),transparent 55%),
  var(--bg);overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center;}
.hero h1{font-size:clamp(32px,4.6vw,56px);line-height:1.12;font-weight:800;letter-spacing:-.02em;margin:18px 0 20px;}
.hero p.lead{font-size:18px;color:var(--muted);max-width:540px;margin-bottom:30px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px;}
.hero-stats{display:flex;gap:30px;flex-wrap:wrap;}
.hero-stats .s b{display:block;font-size:26px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-stats .s span{font-size:13px;color:var(--muted);}

/* live panel */
.live-card{background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--line-strong);border-radius:22px;padding:22px;box-shadow:var(--shadow);position:relative;overflow:hidden;}
.live-card .live-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.live-tag{display:inline-flex;align-items:center;gap:7px;font-size:11px;letter-spacing:.16em;font-weight:700;color:#7CFFCB;background:rgba(25,224,208,.1);padding:5px 11px;border-radius:999px;border:1px solid rgba(25,224,208,.25);}
.dot{width:8px;height:8px;border-radius:50%;background:#36E0A8;box-shadow:0 0 0 0 rgba(54,224,168,.6);animation:pulse 2s infinite;}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(54,224,168,.55);}70%{box-shadow:0 0 0 9px rgba(54,224,168,0);}100%{box-shadow:0 0 0 0 rgba(54,224,168,0);}}
.live-card h4{font-size:13px;color:var(--muted);font-weight:600;margin-bottom:4px;}
.live-row{display:flex;justify-content:space-between;align-items:flex-end;padding:13px 0;border-bottom:1px dashed var(--line);}
.live-row:last-child{border-bottom:0;}
.live-row .k{font-size:14px;color:var(--text);}
.live-row .k small{display:block;color:var(--muted-2);font-size:11.5px;margin-top:2px;}
.live-row .v{font-size:18px;font-weight:800;color:var(--brand-2);font-variant-numeric:tabular-nums;}
.live-row .v.up{color:#5BE8A8;}
.live-foot{margin-top:14px;display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);}
.badge-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px;}
.chip{font-size:12px;color:var(--muted);border:1px solid var(--line);padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.02);}

/* trusted logo wall */
.trusted{padding:40px 0 8px;border-top:1px solid var(--line);}
.trusted p{text-align:center;color:var(--muted-2);font-size:13px;letter-spacing:.08em;margin-bottom:22px;}
.logo-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:14px 36px;align-items:center;opacity:.6;}
.logo-wall span{font-weight:700;font-size:16px;color:#C7D0E2;letter-spacing:.02em;}

/* feature cards 4-col */
.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.feat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .2s,border-color .2s,background .2s;}
.feat:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--panel-2);}
.feat .ico{width:46px;height:46px;border-radius:12px;background:rgba(45,107,255,.12);border:1px solid rgba(45,107,255,.28);display:grid;place-items:center;margin-bottom:16px;color:var(--brand-2);}
.feat h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.feat p{font-size:14px;color:var(--muted);}

/* capability cards 2-col */
.cap-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.cap{position:relative;background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--line-strong);border-radius:var(--radius);padding:28px;overflow:hidden;}
.cap::after{content:"";position:absolute;right:-40px;top:-40px;width:160px;height:160px;border-radius:50%;background:radial-gradient(circle,rgba(45,107,255,.18),transparent 70%);}
.cap .tag{font-size:12px;letter-spacing:.12em;color:var(--brand-2);font-weight:700;text-transform:uppercase;}
.cap h3{font-size:21px;font-weight:750;margin:8px 0 10px;}
.cap>p{font-size:14.5px;color:var(--muted);margin-bottom:16px;}
.cap ul{list-style:none;display:flex;flex-direction:column;gap:9px;}
.cap li{display:flex;gap:10px;font-size:14px;color:#C7D0E2;align-items:flex-start;}
.cap li svg{flex:none;margin-top:3px;color:var(--brand-2);}
.cap .metrics{display:flex;gap:22px;margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);}
.cap .metrics b{font-size:20px;font-weight:800;display:block;}
.cap .metrics span{font-size:12px;color:var(--muted-2);}

/* architecture stack */
.arch-stack{display:flex;flex-direction:column;gap:14px;max-width:920px;margin:0 auto;}
.layer{border:1px solid var(--line-strong);border-radius:16px;padding:20px 24px;background:var(--panel);display:flex;align-items:center;gap:20px;}
.layer .lh{font-weight:750;font-size:16px;min-width:148px;}
.layer .lh small{display:block;font-size:11.5px;color:var(--muted-2);font-weight:600;margin-top:2px;}
.layer .lc{display:flex;gap:10px;flex-wrap:wrap;flex:1;}
.pill{font-size:13px;padding:7px 13px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid var(--line);color:#D2DAEA;}
.layer.l1{border-color:rgba(25,224,208,.35);} .layer.l1 .lh{color:var(--brand-2);}
.layer.l2{border-color:rgba(255,138,61,.35);} .layer.l2 .lh{color:var(--accent);}
.layer.l3{border-color:rgba(45,107,255,.4);} .layer.l3 .lh{color:#7AA2FF;}
.layer.l4{border-color:rgba(45,107,255,.25);}
.arrow-down{text-align:center;color:var(--brand-2);font-size:22px;line-height:1;}
.flow-note{text-align:center;margin-top:26px;color:var(--muted);font-size:14.5px;}
.flow-note b{color:var(--text);}

/* industry cards */
.ind-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.ind-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:28px;position:relative;overflow:hidden;transition:transform .2s,border-color .2s;}
.ind-card:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.ind-card .ic{font-size:30px;margin-bottom:14px;}
.ind-card h3{font-size:19px;font-weight:750;margin-bottom:8px;}
.ind-card p{font-size:14px;color:var(--muted);margin-bottom:16px;}
.ind-card .im{display:flex;gap:18px;flex-wrap:wrap;}
.ind-card .im div b{display:block;font-size:19px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.ind-card .im div span{font-size:11.5px;color:var(--muted-2);}

/* steps */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.step{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:28px;position:relative;}
.step .num{position:absolute;top:18px;right:22px;font-size:46px;font-weight:800;color:rgba(255,255,255,.06);}
.step .badge{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--accent);font-weight:700;margin-bottom:14px;}
.step h3{font-size:18px;font-weight:750;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);}
.step .t{margin-top:14px;font-size:12.5px;color:var(--brand-2);font-weight:600;}

/* results */
.res-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center;}
.res{border:1px solid var(--line);border-radius:var(--radius);padding:32px 18px;background:var(--panel);}
.res b{font-size:clamp(30px,4vw,44px);font-weight:850;display:block;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1;}
.res span{font-size:14px;color:var(--muted);display:block;margin-top:10px;}

/* security */
.sec-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.sec-list{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.sec-item{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px;}
.sec-item .si{color:var(--brand-2);margin-bottom:8px;}
.sec-item h4{font-size:15px;font-weight:700;margin-bottom:5px;}
.sec-item p{font-size:13px;color:var(--muted);}
.cert-wall{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.cert{font-size:12.5px;border:1px solid var(--line-strong);border-radius:10px;padding:9px 14px;background:rgba(255,255,255,.02);color:#C7D0E2;}

/* testimonials */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.quote{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;gap:14px;}
.quote p{font-size:14.5px;color:#D2DAEA;}
.quote .who{margin-top:auto;font-size:13px;color:var(--muted-2);}
.quote .who b{color:var(--text);font-weight:700;display:block;}

/* cta */
.cta{background:radial-gradient(700px 360px at 50% -20%,rgba(45,107,255,.32),transparent 60%),var(--bg);}
.cta-box{text-align:center;max-width:760px;margin:0 auto;background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--line-strong);border-radius:26px;padding:54px 36px;box-shadow:var(--shadow);}
.cta-box h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;margin-bottom:14px;}
.cta-box p{color:var(--muted);font-size:16px;margin-bottom:26px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* TABS (solutions) */
.tabs{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:36px;}
.tab-btn{font-size:14.5px;font-weight:650;padding:10px 18px;border-radius:999px;border:1px solid var(--line-strong);background:rgba(255,255,255,.03);color:var(--muted);cursor:pointer;transition:.2s;}
.tab-btn:hover{color:var(--text);}
.tab-btn.active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 10px 24px -12px rgba(45,107,255,.7);}
.tab-panel{display:none;animation:fade .4s ease;}
.tab-panel.active{display:block;}
@keyframes fade{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
.sol-panel{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--line-strong);border-radius:22px;padding:34px;}
.sol-panel .sp-core{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);font-weight:700;}
.sol-panel h3{font-size:26px;font-weight:800;margin:8px 0 14px;}
.sol-panel .flow-line{display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:#C7D0E2;font-size:14px;margin-bottom:18px;}
.sol-panel .flow-line .node{padding:6px 12px;border-radius:999px;background:rgba(45,107,255,.12);border:1px solid rgba(45,107,255,.28);font-size:13px;}
.sol-panel .flow-line .arr{color:var(--brand-2);}
.sol-metrics{display:flex;gap:26px;flex-wrap:wrap;}
.sol-metrics div b{display:block;font-size:30px;font-weight:850;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.sol-metrics div span{font-size:12.5px;color:var(--muted-2);}
.sol-clients{margin-top:22px;}
.sol-clients p{font-size:13px;color:var(--muted-2);margin-bottom:10px;}
.sol-clients .row{display:flex;gap:18px;flex-wrap:wrap;}
.sol-clients .row span{font-weight:700;color:#C7D0E2;font-size:14px;}

/* FILTER (cases) */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:34px;}
.filter-btn{font-size:13.5px;padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--muted);cursor:pointer;transition:.2s;}
.filter-btn:hover{color:var(--text);}
.filter-btn.active{background:rgba(45,107,255,.16);border-color:rgba(45,107,255,.45);color:#cfe0ff;}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.case-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:14px;transition:transform .2s,border-color .2s;}
.case-card:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.case-card .cat{font-size:12px;color:var(--brand-2);font-weight:700;letter-spacing:.04em;}
.case-card h3{font-size:18px;font-weight:750;}
.case-card .sub{font-size:13.5px;color:var(--muted);}
.case-card .cm{display:flex;gap:16px;flex-wrap:wrap;}
.case-card .cm div b{display:block;font-size:18px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.case-card .cm div span{font-size:11px;color:var(--muted-2);}
.case-card .agents{display:flex;gap:6px;flex-wrap:wrap;margin-top:auto;}
.case-card .agents span{font-size:11.5px;padding:4px 10px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid var(--line);color:#B9C4DA;}

/* featured story */
.feature-story{background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--line-strong);border-radius:22px;padding:34px;display:grid;grid-template-columns:1.2fr .8fr;gap:34px;margin-bottom:46px;}
.feature-story .fs-tag{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);font-weight:700;}
.feature-story h3{font-size:24px;font-weight:800;margin:8px 0 6px;}
.feature-story .fs-desc{font-size:14.5px;color:var(--muted);margin-bottom:18px;}
.fs-flow{display:flex;flex-direction:column;gap:8px;}
.fs-flow .step-row{display:flex;align-items:center;gap:10px;font-size:13.5px;color:#C7D0E2;}
.fs-flow .step-row .n{width:24px;height:24px;border-radius:50%;background:rgba(45,107,255,.18);color:#9DC0FF;display:grid;place-items:center;font-size:12px;font-weight:700;flex:none;}
.fs-ba{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.fs-ba .ba{background:rgba(0,0,0,.25);border:1px solid var(--line);border-radius:14px;padding:16px;}
.fs-ba .ba h5{font-size:13px;color:var(--muted-2);margin-bottom:8px;letter-spacing:.06em;}
.fs-ba .ba ul{list-style:none;font-size:13px;color:#C7D0E2;display:flex;flex-direction:column;gap:6px;}
.fs-ba .ba.before h5{color:#E0837A;}
.fs-ba .ba.after h5{color:#7FE9B6;}

/* TIMELINE (product collaboration) */
.timeline{position:relative;max-width:980px;margin:0 auto;padding-left:8px;}
.tl-day{display:grid;grid-template-columns:96px 1fr;gap:20px;padding:16px 0;border-bottom:1px dashed var(--line);}
.tl-day:last-child{border-bottom:0;}
.tl-day .day{font-weight:800;color:var(--brand-2);font-size:15px;}
.tl-day .day small{display:block;color:var(--muted-2);font-size:11.5px;font-weight:600;}
.tl-day .ev{display:flex;gap:14px;align-items:flex-start;}
.tl-day .ev .badge2{font-size:12px;font-weight:700;padding:5px 11px;border-radius:999px;background:rgba(45,107,255,.14);border:1px solid rgba(45,107,255,.3);color:#9DC0FF;white-space:nowrap;flex:none;}
.tl-day .ev .txt{font-size:14.5px;color:#D2DAEA;}
.tl-day .ev .txt b{color:var(--text);}

/* FLOW CANVAS (product) */
.flow-canvas{background:var(--panel);border:1px solid var(--line-strong);border-radius:20px;padding:28px;position:relative;overflow:hidden;}
.flow-canvas .fc-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;flex-wrap:wrap;gap:10px;}
.flow-canvas .fc-head h4{font-size:16px;font-weight:750;}
.fc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.fc-col{background:rgba(255,255,255,.02);border:1px solid var(--line);border-radius:14px;padding:14px;}
.fc-col h5{font-size:12.5px;color:var(--muted-2);letter-spacing:.06em;margin-bottom:12px;text-transform:uppercase;}
.fc-node{background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--line-strong);border-radius:10px;padding:11px 13px;margin-bottom:10px;font-size:13.5px;color:#D2DAEA;cursor:grab;transition:.15s;}
.fc-node:hover{border-color:rgba(45,107,255,.5);transform:translateY(-2px);}
.fc-node .k{font-size:11px;color:var(--brand-2);font-weight:700;}
.fc-conn{display:flex;align-items:center;gap:8px;color:var(--accent);font-size:13px;margin:6px 0;justify-content:center;}
.fc-run{margin-top:18px;display:flex;gap:12px;align-items:center;flex-wrap:wrap;}
.fc-log{margin-top:16px;background:rgba(0,0,0,.35);border:1px solid var(--line);border-radius:12px;padding:14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;color:#7FE9B6;min-height:64px;line-height:1.7;}
.fc-log .t{color:var(--muted-2);}

/* EXPERIENCE */
.exp-grid{display:grid;grid-template-columns:minmax(320px,360px) 1fr;gap:28px;align-items:stretch;}
.exp-list{display:flex;flex-direction:column;gap:12px;min-height:560px;overflow:auto;padding-right:6px;}
.exp-card{display:flex;gap:14px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px;cursor:pointer;transition:.18s;}
.exp-card:hover,.exp-card.active{border-color:rgba(45,107,255,.55);background:var(--panel-2);transform:translateX(3px);}
.exp-card .ava{width:46px;height:46px;border-radius:12px;background:var(--grad);display:grid;place-items:center;color:#fff;font-weight:800;font-size:16px;flex:none;}
.exp-card .meta b{font-size:15px;font-weight:700;display:block;}
.exp-card .meta span{font-size:12.5px;color:var(--muted-2);}
.exp-card .meta em{display:block;font-size:12px;color:var(--brand-2);font-style:normal;margin-top:2px;}
.exp-stage{background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--line-strong);border-radius:20px;padding:28px;min-height:560px;display:flex;flex-direction:column;width:100%;}
.exp-chat{flex:1;min-height:240px;}
.exp-stage .es-head{display:flex;align-items:center;gap:14px;margin-bottom:18px;padding-bottom:18px;border-bottom:1px solid var(--line);}
.exp-stage .es-head .ava{width:52px;height:52px;border-radius:14px;background:var(--grad);display:grid;place-items:center;color:#fff;font-weight:800;font-size:18px;}
.exp-stage .es-head h3{font-size:20px;font-weight:800;}
.exp-stage .es-head p{font-size:13px;color:var(--muted);}
.exp-chat{flex:1;display:flex;flex-direction:column;gap:14px;overflow:auto;padding:6px 2px;}
.bubble{max-width:78%;padding:12px 16px;border-radius:16px;font-size:14.5px;line-height:1.55;}
.bubble.ai{align-self:flex-start;background:rgba(255,255,255,.06);border:1px solid var(--line);border-bottom-left-radius:4px;}
.bubble.user{align-self:flex-end;background:var(--grad);color:#fff;border-bottom-right-radius:4px;}
.exp-controls{display:flex;gap:12px;margin-top:18px;flex-wrap:wrap;}

/* forms */
.form-card{background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--line-strong);border-radius:20px;padding:30px;max-width:520px;margin:0 auto;}
.form-card h3{font-size:20px;font-weight:800;margin-bottom:6px;}
.form-card p{font-size:14px;color:var(--muted);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px;}
.field input,.field select,.field textarea{width:100%;background:rgba(0,0,0,.25);border:1px solid var(--line-strong);border-radius:10px;padding:12px 14px;color:var(--text);font-size:14.5px;font-family:var(--font);}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:rgba(45,107,255,.6);}
.field textarea{resize:vertical;min-height:84px;}
.form-note{font-size:12.5px;color:var(--muted-2);text-align:center;margin-top:12px;}

/* page hero (sub pages) */
.page-hero{padding:64px 0 30px;background:radial-gradient(800px 420px at 80% -10%,rgba(45,107,255,.22),transparent 60%),var(--bg);}
.page-hero .eyebrow{margin-bottom:14px;}
.page-hero h1{font-size:clamp(30px,4.2vw,48px);font-weight:800;letter-spacing:-.02em;margin-bottom:14px;line-height:1.15;}
.page-hero p{font-size:17px;color:var(--muted);max-width:640px;}
.crumb{font-size:13px;color:var(--muted-2);margin-bottom:18px;}
.crumb a:hover{color:var(--text);}

/* footer */
footer{border-top:1px solid var(--line);padding:54px 0 34px;background:var(--bg);margin-top:20px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;}
.foot-grid h5{font-size:13px;color:var(--muted-2);letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px;}
.foot-grid a{display:block;color:var(--muted);font-size:14px;margin-bottom:10px;}
.foot-grid a:hover{color:var(--text);}
.foot-brand p{font-size:14px;color:var(--muted);max-width:300px;margin:14px 0 0;}
.foot-bottom{border-top:1px solid var(--line);margin-top:40px;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:var(--muted-2);font-size:13px;}

/* reveal animation */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:none;}

/* PIPELINE STEPPER (融合 aidi 核心流程) */
.pipe-track{display:flex;justify-content:space-between;position:relative;max-width:1040px;margin:0 auto 30px;gap:6px;}
.pipe-track::before{content:"";position:absolute;top:27px;left:5%;right:5%;height:2px;background:var(--line-strong);z-index:1;}
.pipe-step{flex:1;min-width:96px;display:flex;flex-direction:column;align-items:center;gap:10px;cursor:pointer;position:relative;z-index:2;}
.pipe-step .ps-dot{width:54px;height:54px;border-radius:14px;background:var(--panel-2);border:1px solid var(--line-strong);display:grid;place-items:center;font-size:22px;transition:.2s;position:relative;}
.pipe-step:hover .ps-dot,.pipe-step.active .ps-dot{border-color:rgba(45,107,255,.6);background:rgba(45,107,255,.14);box-shadow:0 8px 22px -10px rgba(45,107,255,.6);transform:translateY(-2px);}
.pipe-step .ps-num{position:absolute;top:-7px;left:-7px;width:22px;height:22px;border-radius:50%;background:var(--grad);color:#fff;font-size:11.5px;font-weight:800;display:grid;place-items:center;box-shadow:0 2px 6px rgba(0,0,0,.3);}
.pipe-step .ps-label{font-size:13px;color:var(--muted);text-align:center;font-weight:600;line-height:1.3;}
.pipe-step.active .ps-label{color:var(--text);}
.pipe-detail{background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--line-strong);border-radius:18px;padding:30px;display:flex;gap:24px;align-items:flex-start;max-width:1040px;margin:0 auto;min-height:170px;}
.pipe-detail .pd-ico{width:60px;height:60px;border-radius:16px;background:var(--grad);display:grid;place-items:center;font-size:28px;flex-shrink:0;box-shadow:0 8px 20px -8px rgba(45,107,255,.6);}
.pipe-detail .pd-body{flex:1;}
.pipe-detail .pd-body .pd-stage{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-2);font-weight:700;margin-bottom:6px;}
.pipe-detail .pd-body h4{font-size:21px;font-weight:750;margin-bottom:8px;}
.pipe-detail .pd-body p{font-size:15px;color:var(--muted);margin-bottom:14px;line-height:1.65;}
.pipe-detail .pd-tags{display:flex;gap:8px;flex-wrap:wrap;}
.pipe-detail .pd-tags span{font-size:12.5px;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid var(--line);color:#C7D0E2;}

/* MODULE GRID (融合 aidi 8 大能力模块画布) */
.mod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.mod-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px;cursor:pointer;transition:.2s;display:flex;flex-direction:column;gap:11px;position:relative;}
.mod-card:hover,.mod-card.active{border-color:rgba(45,107,255,.5);background:var(--panel-2);transform:translateY(-3px);}
.mod-card .mc-ico{width:44px;height:44px;border-radius:11px;background:rgba(45,107,255,.12);border:1px solid rgba(45,107,255,.25);display:grid;place-items:center;font-size:21px;color:var(--brand-2);}
.mod-card h4{font-size:16px;font-weight:700;}
.mod-card p{font-size:13px;color:var(--muted);line-height:1.5;}
.mod-card .mc-arrow{position:absolute;top:16px;right:16px;color:var(--muted-2);font-size:14px;transition:.2s;}
.mod-card:hover .mc-arrow,.mod-card.active .mc-arrow{color:var(--brand-2);transform:translateX(3px);}
.mod-detail{margin-top:24px;background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--line-strong);border-radius:18px;padding:30px;display:flex;gap:24px;align-items:flex-start;min-height:150px;}
.mod-detail .md-ico{width:60px;height:60px;border-radius:16px;background:rgba(45,107,255,.14);border:1px solid rgba(45,107,255,.3);display:grid;place-items:center;font-size:28px;flex-shrink:0;}
.mod-detail .md-body{flex:1;}
.mod-detail .md-body .md-kicker{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:6px;}
.mod-detail .md-body h4{font-size:21px;font-weight:750;margin-bottom:8px;}
.mod-detail .md-body p{font-size:15px;color:var(--muted);margin-bottom:14px;line-height:1.65;}
.mod-detail .md-tags{display:flex;gap:8px;flex-wrap:wrap;}
.mod-detail .md-tags span{font-size:12.5px;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid var(--line);color:#C7D0E2;}

/* ===== 核心能力 · 左步右板（参考 aidi 核心流程） ===== */
.core-cap{padding:80px 0 90px;}
.core-cap .cc-layout{display:grid;grid-template-columns:300px 1fr;gap:32px;align-items:start;}
.cc-steps{display:flex;flex-direction:column;gap:4px;}
.cc-step{display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:12px;cursor:pointer;transition:.25s;background:transparent;border:1px solid transparent;color:var(--muted);position:relative;}
.cc-step::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:0;background:var(--grad);border-radius:2px;transition:.25s;}
.cc-step:hover{background:rgba(255,255,255,.03);color:var(--text);}
.cc-step.active{background:linear-gradient(135deg,rgba(45,107,255,.1),rgba(25,224,208,.06));border-color:rgba(45,107,255,.28);color:var(--text);}
.cc-step.active::before{height:60%;}
.cs-num{width:30px;height:30px;border-radius:8px;background:rgba(255,255,255,.05);border:1px solid var(--line);display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--muted-2);flex-shrink:0;transition:.25s;}
.cc-step.active .cs-num{background:var(--brand);border-color:var(--brand);color:#fff;}
.cs-label{font-size:15px;font-weight:600;line-height:1.3;}

/* 右侧面板 */
.cc-panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;overflow:hidden;min-height:480px;display:flex;flex-direction:column;}
.cc-panel-head{display:flex;align-items:center;gap:10px;padding:14px 20px;border-bottom:1px solid var(--line);background:var(--bg-soft);}
.cc-ph-dots{display:flex;gap:6px;}
.cc-ph-dots span{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.08);}
.cc-ph-dots span:nth-child(1){background:#FF5F57;}
.cc-ph-dots span:nth-child(2){background:#FEBC2E;}
.cc-ph-dots span:nth-child(3){background:#28C840;}
.cc-ph-title{font-size:13px;color:var(--muted-2);margin-left:auto;}
.cc-panel-body{flex:1;padding:24px;display:none;align-items:center;justify-content:center;position:relative;}
.cc-panel-body.active{display:flex;}
.ccp-inner{width:100%;max-width:560px;}
.ccp-inner h4{font-size:19px;font-weight:750;margin-bottom:8px;}
.ccp-inner p{font-size:14px;color:var(--muted);line-height:1.65;margin-bottom:18px;}

/* 模拟 UI 面板 */
.mock-ui{background:var(--bg);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-top:8px;}
.mock-toolbar{display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted-2);}
.mock-tab{padding:5px 12px;border-radius:6px;cursor:pointer;transition:.2s;color:var(--muted-2);}
.mock-tab:hover,.mock-tab.on{background:rgba(45,107,255,.14);color:var(--brand);}
.mock-body{padding:18px;min-height:160px;display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;}
.mock-card{background:var(--panel-2);border:1px solid var(--line);border-radius:10px;padding:14px;width:140px;text-align:center;transition:.2s;}
.mock-card:hover{border-color:rgba(45,107,255,.35);transform:translateY(-2px);}
.mock-card .mc-img{width:100%;height:80px;border-radius:7px;background:rgba(255,255,255,.04);margin-bottom:8px;display:grid;place-items:center;font-size:28px;border:1px dashed var(--line);}
.mock-card b{font-size:13px;display:block;margin-bottom:2px;}
.mock-card span{font-size:11px;color:var(--muted-2);}

/* 模拟终端 */
.mock-term{background:#0a0e1a;border:1px solid var(--line);border-radius:10px;padding:16px;font-family:"SF Mono",Menlo,Consolas,monospace;font-size:12.5px;line-height:1.75;color:#9ACD70;overflow-x:auto;}
.mock-term .mt-prompt{color:var(--brand-2);}
.mock-term .mt-cmd{color:#E7ECF5;}
.mock-term .mt-out{color:var(--muted);}

/* 模拟表格 */
.mock-table-wrap{overflow-x:auto;}
.mock-table{width:100%;border-collapse:collapse;font-size:13px;}
.mock-table th{background:rgba(45,107,255,.08);color:var(--brand-2);padding:10px 12px;text-align:left;font-weight:700;border-bottom:1px solid var(--line-strong);}
.mock-table td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--muted);}
.mock-table tr:hover td{background:rgba(255,255,255,.02);}

/* 模拟知识库 */
.kb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.kb-item{background:var(--panel-2);border:1px solid var(--line);border-radius:10px;padding:14px;text-align:center;transition:.2s;}
.kb-item:hover{border-color:rgba(25,224,208,.3);}
.kb-item .kb-icon{font-size:26px;margin-bottom:6px;}
.kb-item b{font-size:12.5px;display:block;}
.kb-item span{font-size:11px;color:var(--muted-2);}

/* 模拟流程图 */
.flow-mock{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:center;padding:10px 0;}
.fm-node{background:var(--panel-2);border:1px solid var(--line);border-radius:10px;padding:10px 16px;font-size:12.5px;font-weight:600;display:flex;align-items:center;gap:6px;white-space:nowrap;transition:.2s;}
.fm-node:hover{border-color:var(--brand);box-shadow:0 0 16px rgba(45,107,255,.15);}
.fm-node .fm-ico{font-size:16px;}
.fm-arrow{color:var(--muted-2);font-size:16px;}

/* 能力标签 */
.cap-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;}
.cap-tags span{font-size:12px;padding:5px 12px;border-radius:999px;background:rgba(45,107,255,.1);border:1px solid rgba(45,107,255,.2);color:var(--brand-2);}

/* responsive */
@media (max-width:980px){
  .hero-grid,.sol-panel,.feature-story,.sec-grid,.exp-grid{grid-template-columns:1fr;}
  .cards-4,.res-grid{grid-template-columns:repeat(2,1fr);}
  .cap-grid,.ind-grid,.quote-grid,.step-grid,.case-grid,.fs-ba{grid-template-columns:1fr;}
  .nav-links{display:none;}
  .menu-btn{display:grid;place-items:center;}
  .exp-list{max-height:none;}
  /* mega menu mobile */
  .nav-drop{position:static;transform:none!important;min-width:100%;border-radius:12px;padding:16px;margin-top:10px;box-shadow:none;border-color:var(--line);}
  .drop-grid{grid-template-columns:1fr;gap:16px;}
  .drop-highlight{flex-direction:column;text-align:center;}
  .drop-highlight .dh-cta{margin-left:0;}
}
@media (max-width:560px){
  section{padding:64px 0;}
  .cards-4,.res-grid{grid-template-columns:1fr;}
  .layer{flex-direction:column;align-items:flex-start;gap:12px;}
  .layer .lh{min-width:auto;}
  .tl-day{grid-template-columns:1fr;gap:8px;}
  .fc-grid{grid-template-columns:1fr;}
  .mod-grid{grid-template-columns:1fr;}
  .pipe-track{flex-wrap:wrap;justify-content:center;gap:18px 10px;}
  .pipe-track::before{display:none;}
  .pipe-step{min-width:74px;}
  .core-cap .cc-layout{grid-template-columns:1fr;}
  .cc-steps{flex-direction:row;overflow-x:auto;padding-bottom:8px;}
  .cc-step{min-width:200px;flex-shrink:0;}
  .cc-panel{min-height:380px;}
}

/* ===== 预约演示弹窗 (Lead Capture Modal) ===== */
.demo-overlay{position:fixed;inset:0;z-index:1000;background:rgba(4,7,14,.66);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;}
.demo-overlay.open{opacity:1;visibility:visible;}
.demo-dialog{width:100%;max-width:460px;background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--line-strong);border-radius:20px;padding:30px;box-shadow:0 40px 90px -30px rgba(0,0,0,.7);transform:translateY(16px) scale(.98);transition:transform .3s;position:relative;}
.demo-overlay.open .demo-dialog{transform:none;}
.demo-close{position:absolute;top:18px;right:18px;width:32px;height:32px;border-radius:9px;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--muted);font-size:18px;cursor:pointer;display:grid;place-items:center;transition:.2s;}
.demo-close:hover{background:rgba(255,255,255,.08);color:var(--text);}
.demo-dialog .d-eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-2);font-weight:600;}
.demo-dialog h3{font-size:23px;font-weight:780;margin:8px 0 6px;letter-spacing:-.01em;}
.demo-dialog .d-sub{font-size:14px;color:var(--muted);margin-bottom:22px;line-height:1.6;}
.d-field{margin-bottom:16px;}
.d-field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px;color:#C7D0E2;}
.d-field label .req{color:var(--accent);margin-left:3px;}
.d-field input,.d-field select{width:100%;height:46px;padding:0 14px;border-radius:11px;background:var(--bg);border:1px solid var(--line-strong);color:var(--text);font-size:15px;font-family:inherit;transition:.2s;outline:none;}
.d-field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239AA6BD' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;}
.d-field input:focus,.d-field select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(45,107,255,.15);}
.d-field.invalid input,.d-field.invalid select{border-color:#FF5F57;box-shadow:0 0 0 3px rgba(255,95,87,.12);}
.d-field .err{display:none;font-size:12.5px;color:#FF7A72;margin-top:6px;}
.d-field.invalid .err{display:block;}
/* 表单顶部错误横条（替代 alert） */
.d-form-err{display:block;padding:11px 14px;margin-bottom:14px;border-radius:10px;background:rgba(255,95,87,.10);border:1px solid rgba(255,95,87,.35);color:#FF7A72;font-size:13.5px;line-height:1.55;}
.d-form-err[hidden]{display:none;}
.d-submit{width:100%;height:48px;margin-top:6px;font-size:15.5px;font-weight:700;}
.d-note{font-size:12px;color:var(--muted-2);text-align:center;margin-top:14px;line-height:1.5;}
.d-note a{color:var(--brand-2);}
/* 成功态 */
.demo-success{display:none;text-align:center;padding:14px 0 4px;}
.demo-success.show{display:block;}
.demo-success .ok-ico{width:64px;height:64px;border-radius:50%;background:rgba(40,200,64,.14);border:1px solid rgba(40,200,64,.35);display:grid;place-items:center;margin:0 auto 18px;font-size:32px;color:#28C840;animation:pop .4s ease;}
@keyframes pop{0%{transform:scale(.5);opacity:0;}60%{transform:scale(1.1);}100%{transform:scale(1);opacity:1;}}
.demo-success h3{margin-bottom:8px;}
.demo-success p{font-size:14px;color:var(--muted);line-height:1.6;}
.demo-success .recap{margin-top:16px;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:14px;text-align:left;font-size:13px;color:var(--muted);line-height:1.9;}
.demo-success .recap b{color:var(--text);}
.demo-form.hide{display:none;}

/* ============================================================
   手机端自适应 (≤768px 重点手机档)
   平板沿用现有 980px/560px 断点，此处只在手机上覆盖与下沉
   ============================================================ */
@media (max-width:768px){

  /* ---- 触控基础 ---- */
  body{-webkit-tap-highlight-color:transparent;}
  .wrap{max-width:100%;padding:0 16px;}
  section{padding:52px 0;}
  /* 顶栏只保留汉堡，预约演示入口移到抽屉底部 CTA */
  .nav-cta .btn{display:none;}
  .nav-cta .menu-btn{display:grid;}
  .sec-head{margin-bottom:34px;}
  .sec-head h2{font-size:26px;margin:10px 0 10px;}
  .sec-head p{font-size:15px;}
  .eyebrow{font-size:12px;}

  /* ---- 导航：汉堡 + 手风琴抽屉 ---- */
  header{height:auto;}
  .nav{height:60px;}
  /* header logo 变单层清爽（不影响 footer） */
  header .logo{font-size:16px;gap:9px;}
  header .logo .mark{width:28px;height:28px;}
  header .logo small{display:none;}
  /* footer logo 仍可见副标题（已用更小字号） */
  footer .logo{font-size:15px;}
  footer .logo small{font-size:9.5px;}
  .nav-links{
    display:none;
    position:fixed;
    top:60px;left:0;right:0;
    height:calc(100vh - 60px);
    height:calc(100dvh - 60px);
    flex-direction:column;
    gap:4px;
    background:rgba(7,11,22,1);
    padding:14px 18px 24px;
    overflow-y:auto;
    -webkit-overflow-scrolling:touch;
    z-index:60;
    border-bottom:1px solid var(--line);
  }
  .nav-links.open{display:flex;}
  .nav-item{width:100%;}
  /* 分组大项（父链接）→ 手风琴标题行 */
  .nav-item > a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:15px 4px;
    font-size:16px;
    font-weight:700;
    color:var(--text);
    border-bottom:1px solid var(--line);
  }
  .nav-item > a::after{
    content:"";
    width:9px;height:9px;
    border-right:2px solid var(--muted);
    border-bottom:2px solid var(--muted);
    transform:rotate(45deg) translateY(-2px);
    transition:transform .25s;
    margin:0;
    opacity:1;
  }
  .nav-item > a.open::after{transform:rotate(-135deg) translateY(-2px);border-color:var(--brand-2);}
  /* 子菜单：默认收起，展开时显示 */
  .nav-item .nav-drop{
    position:static;
    transform:none!important;
    min-width:0!important;
    width:100%;
    border-radius:0;
    border:none;
    box-shadow:none;
    background:transparent;
    padding:0;
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    max-height:0;
    overflow:hidden;
    transition:max-height .3s ease;
  }
  .nav-item.open .nav-drop{max-height:900px;}
  .drop-grid{grid-template-columns:1fr;gap:4px;}
  .drop-col{padding:0;}
  .drop-col h5{padding:12px 4px 8px;margin-bottom:4px;}
  .drop-col ul{gap:2px;}
  .drop-col li a{padding:10px 8px;font-size:14.5px;}
  .drop-highlight{flex-direction:column;align-items:flex-start;text-align:left;gap:12px;margin:10px 4px 0;}
  .drop-highlight .dh-text p{line-height:1.5;}
  .drop-highlight .dh-cta{margin-left:0;align-self:stretch;text-align:center;}
  /* 每个分组顶部的总览入口（JS 注入） */
  .nav-overview{
    display:block;
    padding:12px 8px;
    font-size:14.5px;
    font-weight:700;
    color:var(--brand-2);
    border-top:1px dashed var(--line);
    margin-top:6px;
  }
  /* 普通链接（安全合规 / 体验中心） */
  .nav-links > a:not(.nav-item a){
    display:flex;
    align-items:center;
    padding:15px 4px;
    font-size:16px;
    font-weight:700;
    color:var(--text);
    border-bottom:1px solid var(--line);
  }
  /* 抽屉底部 CTA（JS 注入 · sticky 固定底部，常驻可见） */
  .nav-cta-mobile{
    position:sticky;
    bottom:0;
    padding:14px 4px 8px;
    margin-top:auto;
    background:linear-gradient(180deg,rgba(7,11,22,0),rgba(7,11,22,.9) 30%,rgba(7,11,22,1));
  }
  .nav-cta-mobile .btn{width:100%;justify-content:center;}

  /* ---- 栅格统一单列下沉 ---- */
  .hero-grid,.cards-4,.cap-grid,.ind-grid,.quote-grid,.step-grid,
  .case-grid,.res-grid,.sol-panel,.feature-story,.sec-grid,.exp-grid{
    grid-template-columns:1fr;gap:16px;
  }
  .fs-ba,.fc-grid,.sec-list,.kb-grid,.mod-grid{grid-template-columns:1fr;gap:14px;}
  .hero-grid{gap:26px;}

  /* ---- 间距 / 内边距压缩 ---- */
  .cap,.step,.ind-card,.case-card,.feat,.quote,.sec-item,.mod-card,.res{padding:20px;}
  .feature-story,.sol-panel,.cta-box{padding:26px 20px;}
  .cta-box{border-radius:20px;}
  .cta-box p{font-size:15px;margin-bottom:20px;}
  .hero{padding:46px 0 40px;}
  .hero h1{font-size:clamp(28px,7.5vw,40px);line-height:1.18;margin:14px 0 16px;}
  .hero p.lead{font-size:16px;margin-bottom:22px;}
  .hero-actions{gap:10px;margin-bottom:22px;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .hero-stats{gap:18px;}
  .hero-stats .s b{font-size:22px;}
  .hero-stats .s span{font-size:12px;width:100%;}
  .hero-stats .s{width:calc(50% - 9px);}
  .sec-item p{font-size:13px;}
  .cert-wall{gap:8px;}
  .cert{padding:8px 12px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .foot-grid h5{margin-bottom:12px;}
  .foot-bottom{flex-direction:column;gap:6px;text-align:center;}
  .res b{font-size:clamp(30px,9vw,40px);}
  .cap .metrics{gap:16px;flex-wrap:wrap;}
  .sol-metrics{gap:18px;}

  /* ---- 专项组件：体验中心 ---- */
  .exp-grid{display:flex;flex-direction:column;}
  .exp-list{flex-direction:row;overflow-x:auto;gap:10px;min-height:auto;padding:0 0 8px;-webkit-overflow-scrolling:touch;}
  .exp-card{flex:0 0 220px;flex-direction:column;align-items:flex-start;gap:8px;padding:14px;}
  .exp-card:hover,.exp-card.active{transform:none;}
  .exp-stage{min-height:480px;padding:20px;}
  .bubble{max-width:88%;}
  .exp-controls .btn{width:100%;justify-content:center;}
  .form-card{padding:22px;max-width:100%;}

  /* ---- 专项组件：管线 stepper（8 步横滑） ---- */
  .pipe-track{flex-wrap:nowrap;overflow-x:auto;gap:0;justify-content:flex-start;padding-bottom:10px;-webkit-overflow-scrolling:touch;}
  .pipe-track::before{display:none;}
  .pipe-step{flex:0 0 92px;min-width:92px;}
  .pipe-detail{flex-direction:column;gap:14px;padding:22px;}
  .pd-ico{width:52px;height:52px;font-size:24px;}

  /* ---- 专项组件：核心能力左步右板 ---- */
  .core-cap .cc-layout{grid-template-columns:1fr;gap:18px;}
  .cc-steps{flex-direction:row;overflow-x:auto;padding-bottom:8px;-webkit-overflow-scrolling:touch;}
  .cc-step{min-width:200px;flex-shrink:0;}
  .cc-panel{min-height:360px;}
  .cc-panel-body{padding:16px;}
  .mock-body{gap:10px;}
  .mock-card{width:120px;}
  .kb-grid{grid-template-columns:repeat(2,1fr);gap:8px;}

  /* ---- 横向滚动容器（防溢出） ---- */
  .flow-canvas,.mock-table-wrap,.fc-log,.mock-term{overflow-x:auto;-webkit-overflow-scrolling:touch;}
  .tl-day{grid-template-columns:1fr;gap:6px;}
  .flow-mock{justify-content:flex-start;overflow-x:auto;flex-wrap:nowrap;padding-bottom:6px;}
  .fm-node{white-space:nowrap;flex:0 0 auto;}

  /* ---- 弹窗（紧凑化） ---- */
  .demo-overlay{padding:12px;}
  .demo-dialog{padding:22px 18px;border-radius:18px;max-height:calc(100dvh - 24px);overflow-y:auto;}
  .demo-dialog h3{font-size:19px;margin:6px 0 4px;}
  .demo-dialog .d-sub{font-size:13px;margin-bottom:16px;line-height:1.55;}
  .demo-close{top:14px;right:14px;width:30px;height:30px;font-size:16px;}
  .d-field{margin-bottom:12px;}
  .d-field label{font-size:13px;margin-bottom:6px;}
  .d-field input,.d-field select{height:42px;padding:0 12px;font-size:14.5px;border-radius:10px;}
  .d-field .err{margin-top:5px;font-size:12px;}
  .d-form-err{padding:10px 12px;font-size:13px;margin-bottom:12px;}
  .d-submit{height:44px;font-size:15px;}
  .d-note{font-size:11.5px;margin-top:12px;line-height:1.45;}
  .demo-success{padding:10px 0 0;}
  .demo-success .ok-ico{width:56px;height:56px;font-size:28px;margin-bottom:14px;}
  .demo-success .recap{padding:12px;font-size:12.5px;line-height:1.8;}
}

/* ---- 小屏手机 (≤480px) 微调 ---- */
@media (max-width:480px){
  .hero-stats .s{width:100%;}
  .foot-grid{grid-template-columns:1fr;gap:20px;}
  .pipe-step{flex-basis:80px;min-width:80px;}
}