/* ══════════════════════════════════════════
   index.css — 首页专属样式
   ══════════════════════════════════════════ */

/* HERO */
#hero {
  position:relative; min-height:100vh;
  display:flex; align-items:center;
  padding:100px 52px 80px; overflow:hidden;
}
#hero::before {
  content:''; position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(14,165,233,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14,165,233,0.04) 1px, transparent 1px);
  background-size:72px 72px;
}
html[data-theme="light"] #hero::before {
  background-image:
    linear-gradient(rgba(2,132,199,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(2,132,199,0.07) 1px, transparent 1px);
}
#hero::after {
  content:''; position:absolute; top:-20%; right:-10%;
  width:700px; height:700px;
  background: radial-gradient(circle, rgba(14,165,233,0.08) 0%, transparent 60%);
  pointer-events:none;
  animation: pulse-glow 8s ease-in-out infinite;
}
@keyframes pulse-glow {
  0%,100%{opacity:.6;transform:scale(1)}
  50%{opacity:1;transform:scale(1.15)}
}
.hero-content { position:relative; z-index:2; max-width:700px; }
.hero-eyebrow {
  display:inline-flex; align-items:center; gap:10px;
  font-size:11px; font-weight:600; letter-spacing:4px;
  text-transform:uppercase; color:var(--brand);
  font-family:var(--font-en); margin-bottom:28px;
}
.hero-eyebrow::before { content:''; display:block; width:36px; height:1px; background:linear-gradient(90deg,var(--brand),var(--cyan)); }
.hero-eyebrow::after  { content:''; display:block; width:6px; height:6px; background:var(--cyan); clip-path:polygon(50% 0%,100% 50%,50% 100%,0% 50%); }
.hero-title {
  font-family:var(--font-serif);
  font-size:clamp(40px,5.5vw,72px);
  font-weight:700; line-height:1.15; color:var(--text-hi); margin-bottom:16px;
}
.hero-title em {
  font-style:normal;
  background:linear-gradient(135deg,var(--brand),var(--cyan));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.hero-sub { font-size:clamp(14px,1.6vw,17px); font-weight:300; color:var(--text-md); line-height:1.8; margin-bottom:10px; max-width:580px; }
.hero-badge {
  display:inline-flex; align-items:center; gap:10px;
  padding:7px 16px 7px 12px; border:1px solid var(--border-hi);
  background:rgba(14,165,233,0.06); font-size:12px; font-weight:500; color:var(--brand);
  letter-spacing:.5px; margin-bottom:40px; margin-top:14px;
}
.badge-dot { width:8px; height:8px; border-radius:50%; background:var(--cyan); box-shadow:0 0 8px var(--cyan); animation:blink 2s infinite; }
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
.hero-actions { display:flex; gap:16px; flex-wrap:wrap; align-items:center; }

/* Hero 右侧浮卡 */
.hero-visual {
  position:absolute; right:0; top:0; bottom:0;
  width:48%; display:flex; align-items:center; justify-content:center;
  padding:80px 52px;
}
.hcard-stack { position:relative; width:420px; height:520px; }
.hcard {
  position:absolute; background:var(--bg-card);
  border:1px solid var(--border); padding:24px;
  box-shadow:0 8px 40px rgba(0,0,0,.4);
  transition:transform .4s;
}
.hcard:hover{transform:translateY(-8px) !important;}
html[data-theme="light"] .hcard { background:#fff; border-color:rgba(2,132,199,.2); box-shadow:0 8px 32px rgba(0,0,0,.1); }
.hcard-1{width:290px;top:20px;right:40px;transform:rotate(1.5deg);animation:fl1 6s ease-in-out infinite;border-top:2px solid var(--brand);}
.hcard-2{width:310px;top:150px;left:10px;transform:rotate(-1deg);animation:fl2 7s ease-in-out infinite;border-top:2px solid var(--cyan);}
.hcard-3{width:270px;bottom:30px;right:30px;transform:rotate(.5deg);animation:fl3 5.5s ease-in-out infinite;border-top:2px solid var(--gold);}
@keyframes fl1{0%,100%{transform:rotate(1.5deg) translateY(0)}50%{transform:rotate(1.5deg) translateY(-14px)}}
@keyframes fl2{0%,100%{transform:rotate(-1deg) translateY(0)}50%{transform:rotate(-1deg) translateY(-10px)}}
@keyframes fl3{0%,100%{transform:rotate(.5deg) translateY(0)}50%{transform:rotate(.5deg) translateY(-12px)}}
.hcard-tag{display:inline-block;font-size:9px;font-weight:700;letter-spacing:2px;text-transform:uppercase;padding:3px 9px;margin-bottom:12px;font-family:var(--font-en);}
.tag-ai {background:rgba(14,165,233,.15);color:var(--brand);border:1px solid var(--border-hi);}
.tag-fw {background:rgba(34,211,238,.1);color:var(--cyan);border:1px solid rgba(34,211,238,.2);}
.tag-sol{background:rgba(245,158,11,.1);color:var(--gold);border:1px solid rgba(245,158,11,.2);}
.hcard-title{font-family:var(--font-en);font-size:22px;font-weight:700;color:var(--text-hi);margin-bottom:8px;letter-spacing:-.3px;}
.hcard-desc{font-size:12px;color:var(--text-md);line-height:1.6;}
.hcard-metrics{margin-top:16px;display:flex;gap:20px;}
.m-num{font-family:var(--font-en);font-size:22px;font-weight:700;color:var(--brand);display:block;}
.m-lbl{font-size:10px;color:var(--text-lo);letter-spacing:.5px;}

/* ── SMARTORDER 摘要 ── */
#so-preview { background:var(--bg-surface); border-top:1px solid var(--border); }
#so-preview::before {
  content:''; position:absolute; top:-200px; right:-200px;
  width:600px; height:600px;
  background:radial-gradient(circle,rgba(14,165,233,.07) 0%,transparent 55%);
  pointer-events:none;
}
.so-grid { display:grid; grid-template-columns:1fr 1fr; gap:80px; align-items:center; margin-bottom:60px; position:relative; z-index:2; }
.so-tagline { font-family:var(--font-serif); font-size:clamp(24px,2.8vw,38px); font-weight:700; line-height:1.35; color:var(--text-hi); margin-bottom:20px; }
.so-tagline em{font-style:normal;color:var(--cyan);}
.so-desc{font-size:15px;color:var(--text-md);line-height:1.9;margin-bottom:28px;}
.pain-list{display:flex;flex-direction:column;gap:16px;}
/* 首页 .pain-card：左边框样式（与 smartorder.css 中的痛点卡片不同，使用不同布局） */
.pain-card{display:flex;gap:20px;align-items:flex-start;padding:20px 22px;background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--brand);transition:border-color .3s,box-shadow .3s;}
.pain-card:hover{border-left-color:var(--cyan);box-shadow:0 4px 24px rgba(14,165,233,.1);}
.pain-icon{width:44px;height:44px;flex-shrink:0;background:rgba(14,165,233,.1);border:1px solid var(--border-hi);display:flex;align-items:center;justify-content:center;font-size:20px;}
.pain-metric{font-family:var(--font-en);font-size:30px;font-weight:700;color:var(--gold);line-height:1;margin-bottom:4px;}
.pain-title{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:4px;}
.pain-desc{font-size:12px;color:var(--text-lo);line-height:1.5;}
.so-features{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;position:relative;z-index:2;}
.so-feature{padding:32px 26px;background:var(--bg-card);border:1px solid var(--border);transition:background .3s,border-color .3s;}
.so-feature:hover{background:var(--bg-raised);border-color:var(--border-hi);}
.so-icon{font-size:32px;margin-bottom:16px;display:block;}
.so-name{font-size:15px;font-weight:700;color:var(--text-hi);margin-bottom:8px;}
.so-detail{font-size:12px;color:var(--text-md);line-height:1.6;}
.so-tag{margin-top:14px;font-size:10px;font-weight:700;color:var(--brand);letter-spacing:1px;font-family:var(--font-en);}

/* ── RAG 摘要 ── */
#rag-preview{background:var(--bg-base);}
#rag-preview::after{content:'';position:absolute;bottom:-100px;left:-100px;width:500px;height:500px;background:radial-gradient(circle,rgba(34,211,238,.05) 0%,transparent 55%);pointer-events:none;}
.rag-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start;}
.arch-header{font-size:10px;font-weight:700;letter-spacing:3px;text-transform:uppercase;color:var(--text-lo);margin-bottom:24px;font-family:var(--font-en);}
.arch-layers{display:flex;flex-direction:column;gap:4px;}
.arch-layer{display:flex;align-items:center;gap:16px;padding:16px 20px;background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--brand);transition:transform .2s,box-shadow .2s,border-left-color .2s;}
.arch-layer:hover{transform:translateX(6px);box-shadow:0 4px 20px rgba(14,165,233,.1);border-left-color:var(--cyan);}
.arch-layer:nth-child(2){border-left-color:#818cf8;}
.arch-layer:nth-child(3){border-left-color:var(--cyan);}
.arch-layer:nth-child(4){border-left-color:var(--green);}
.arch-layer:nth-child(5){border-left-color:var(--gold);}
.arch-icon{width:42px;height:42px;flex-shrink:0;background:var(--bg-raised);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:18px;}
.arch-name{font-size:13px;font-weight:700;color:var(--text-hi);margin-bottom:3px;}
.arch-tech{font-size:11px;color:var(--text-lo);}
.arch-conn{width:2px;height:10px;background:linear-gradient(to bottom,var(--brand),var(--cyan));margin-left:40px;opacity:.2;}
.rag-benefits{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:28px;}
.rag-benefit{padding:24px;background:var(--bg-card);border:1px solid var(--border);transition:border-color .3s,box-shadow .3s,transform .3s;}
.rag-benefit:hover{border-color:var(--border-hi);box-shadow:0 8px 32px rgba(14,165,233,.1);transform:translateY(-4px);}
.ben-icon{font-size:28px;margin-bottom:12px;display:block;}
.ben-title{font-size:14px;font-weight:700;color:var(--text-hi);margin-bottom:8px;}
.ben-desc{font-size:12px;color:var(--text-md);line-height:1.6;}
.ben-stat{margin-top:12px;font-family:var(--font-en);font-size:26px;font-weight:700;color:var(--brand);}
.rag-scenarios{padding:22px 24px;background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--cyan);}
.rag-scenarios .s-label{font-size:10px;font-weight:700;letter-spacing:3px;text-transform:uppercase;color:var(--cyan);margin-bottom:14px;font-family:var(--font-en);}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;}
.stag{padding:6px 14px;background:rgba(34,211,238,.06);border:1px solid rgba(34,211,238,.15);font-size:12px;color:var(--text-md);transition:background .2s,color .2s;}
.stag:hover{background:rgba(34,211,238,.12);color:var(--cyan);}

/* ── PRODUCTS 摘要 ── */
#products-preview{background:var(--bg-surface);border-top:1px solid var(--border);}
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;}
.product-card{padding:40px 32px;background:var(--bg-card);border:1px solid var(--border);position:relative;overflow:hidden;transition:all .3s;}
.product-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--cyan));transform:scaleX(0);transition:transform .3s;transform-origin:left;}
.product-card:hover::before{transform:scaleX(1);}
.product-card:hover{border-color:var(--border-hi);box-shadow:0 16px 50px rgba(0,0,0,.3);transform:translateY(-4px);}
.prod-num{font-family:var(--font-en);font-size:72px;font-weight:700;color:rgba(14,165,233,.05);line-height:1;margin-bottom:-8px;}
.prod-icon{font-size:36px;margin-bottom:16px;}
.prod-name{font-family:var(--font-en);font-size:22px;font-weight:700;color:var(--text-hi);margin-bottom:4px;letter-spacing:-.3px;}
.prod-sub{font-size:12px;color:var(--brand);font-weight:600;letter-spacing:1px;margin-bottom:16px;}
.prod-desc{font-size:13px;color:var(--text-md);line-height:1.75;margin-bottom:24px;}
.prod-tags{display:flex;flex-wrap:wrap;gap:6px;}
.ptag{padding:4px 10px;background:rgba(14,165,233,.07);border:1px solid var(--border);font-size:10px;font-weight:600;color:var(--text-lo);letter-spacing:.5px;font-family:var(--font-en);}

/* ── CASES 摘要 ── */
#cases-preview{background:var(--bg-base);}
/* 首页 cases-grid：gap:2px，与 cases.css 中的 gap:24px 不同 */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;}
.case-card{background:var(--bg-card);border:1px solid var(--border);overflow:hidden;transition:all .3s;}
.case-card:hover{border-color:var(--border-hi);box-shadow:0 12px 40px rgba(0,0,0,.3);transform:translateY(-4px);}
.case-img{height:168px;display:flex;align-items:center;justify-content:center;font-size:52px;position:relative;overflow:hidden;}
.ci-medical {background:linear-gradient(135deg,#0d1f35 0%,#1a4a6e 100%);}
.ci-edu     {background:linear-gradient(135deg,#1a1a0d 0%,#4a3a00 100%);}
.ci-industry{background:linear-gradient(135deg,#0d1635 0%,#1a2a60 100%);}
.ci-power   {background:linear-gradient(135deg,#1a1a00 0%,#504000 100%);}
.ci-auto    {background:linear-gradient(135deg,#1a0d35 0%,#3a1a5e 100%);}
.ci-edu2    {background:linear-gradient(135deg,#0d351a 0%,#1a5e30 100%);}
.case-body{padding:24px;}
.case-ind{display:inline-block;font-size:10px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--brand);margin-bottom:8px;font-family:var(--font-en);}
.case-title{font-size:16px;font-weight:700;color:var(--text-hi);margin-bottom:10px;}
.case-desc{font-size:12px;color:var(--text-md);line-height:1.6;margin-bottom:14px;}
.case-outcomes{display:flex;gap:14px;flex-wrap:wrap;}
.cout{font-size:11px;color:var(--green);font-weight:600;display:flex;align-items:center;gap:4px;}
.cout::before{content:'↑';}

/* ── SERVICES ── */
#services-preview{background:var(--bg-surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;}
.svc{padding:40px 28px;background:var(--bg-card);border:1px solid var(--border);position:relative;overflow:hidden;transition:background .3s,border-color .3s;}
.svc:hover{background:var(--bg-raised);border-color:var(--border-hi);}
.svc::after{content:attr(data-n);position:absolute;bottom:-10px;right:12px;font-family:var(--font-en);font-size:88px;font-weight:700;color:rgba(14,165,233,.04);pointer-events:none;line-height:1;}
.svc-icon{font-size:40px;margin-bottom:20px;}
.svc-title{font-size:18px;font-weight:700;color:var(--text-hi);margin-bottom:12px;}
.svc-desc{font-size:13px;color:var(--text-md);line-height:1.75;}
.svc-list{margin-top:18px;display:flex;flex-direction:column;gap:7px;}
.svc-pt{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-lo);}
.svc-pt::before{content:'';width:18px;height:1px;background:linear-gradient(90deg,var(--brand),var(--cyan));flex-shrink:0;}

/* ── ABOUT 摘要 ── */
#about-preview{background:var(--bg-base);}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center;}
.about-text p{font-size:15px;color:var(--text-md);line-height:1.9;margin-bottom:24px;}
/* 首页 .values-grid：2列版（与 about.css 的3列版不同，各自独立不冲突） */
.values-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px;margin-top:32px;}
.val{padding:20px 22px;background:var(--bg-card);border:1px solid var(--border);transition:border-color .3s;}
.val:hover{border-color:var(--border-hi);}
.val-title{font-size:14px;font-weight:700;color:var(--text-hi);margin-bottom:6px;}
.val-title span{color:var(--brand);margin-right:6px;}
.val-desc{font-size:12px;color:var(--text-lo);line-height:1.55;}
.timeline{position:relative;padding-left:36px;}
.timeline::before{content:'';position:absolute;left:9px;top:0;bottom:0;width:1px;background:linear-gradient(to bottom,var(--brand),var(--cyan),transparent);}
.tl{position:relative;margin-bottom:36px;}
.tl-dot{position:absolute;left:-31px;top:5px;width:12px;height:12px;background:var(--brand);clip-path:polygon(50% 0%,100% 50%,50% 100%,0% 50%);box-shadow:0 0 8px var(--brand-glow);}
.tl-year{font-family:var(--font-en);font-size:13px;font-weight:700;color:var(--brand);letter-spacing:2px;margin-bottom:4px;}
.tl-title{font-size:15px;font-weight:700;color:var(--text-hi);margin-bottom:4px;}
.tl-desc{font-size:13px;color:var(--text-md);line-height:1.5;}

/* ── CONTACT ── */
#contact-section{background:var(--bg-surface);border-top:1px solid var(--border);}
.contact-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:80px;align-items:start;}
.contact-info h3{font-family:var(--font-serif);font-size:30px;font-weight:700;color:var(--text-hi);line-height:1.4;margin-bottom:16px;margin-top:12px;}
.contact-info p{font-size:14px;color:var(--text-md);line-height:1.8;margin-bottom:32px;}
.clinks{display:flex;flex-direction:column;gap:10px;}
.clink{display:flex;align-items:center;gap:14px;padding:13px 16px;background:var(--bg-card);border:1px solid var(--border);text-decoration:none;color:var(--text-hi);font-size:13px;transition:all .2s;}
.clink:hover{border-color:var(--border-hi);box-shadow:0 0 16px rgba(14,165,233,.1);}
.clink-icon{width:34px;height:34px;background:linear-gradient(135deg,var(--brand),var(--brand-dim));display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0;color:white;}
.clink strong{display:block;font-size:13px;font-weight:700;margin-bottom:2px;}
.clink span{font-size:11px;color:var(--text-lo);}
.cform{background:var(--bg-card);border:1px solid var(--border);padding:40px;}
.form-title{font-size:18px;font-weight:700;color:var(--text-hi);margin-bottom:28px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px;}
.fg{display:flex;flex-direction:column;gap:7px;}
.fg.full{grid-column:1/-1;}
.fg label{font-size:10px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--text-lo);font-family:var(--font-en);}
.fg input,.fg select,.fg textarea{padding:12px 16px;background:var(--bg-raised);border:1px solid var(--border);font-family:var(--font-cn);font-size:14px;color:var(--text-hi);outline:none;transition:border-color .2s,box-shadow .2s;}
.fg input::placeholder,.fg textarea::placeholder{color:var(--text-lo);}
.fg select option{background:var(--bg-card);}
.fg input:focus,.fg select:focus,.fg textarea:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(14,165,233,.1);}
.fg textarea{resize:vertical;min-height:100px;}
.form-submit{width:100%;padding:16px;background:linear-gradient(135deg,var(--brand),var(--brand-dim));color:white;border:none;font-family:var(--font-cn);font-size:15px;font-weight:700;letter-spacing:1px;cursor:pointer;clip-path:polygon(0 0,100% 0,100% 78%,97% 100%,0 100%);transition:all .25s;margin-top:8px;}
.form-submit:hover{background:linear-gradient(135deg,var(--cyan),var(--brand));box-shadow:0 8px 24px rgba(14,165,233,.3);}

/* ── CTA Banner ── */
.cta-banner {
  background: linear-gradient(135deg, var(--brand-dim), var(--brand));
  padding: 72px 52px; text-align:center; position:relative; overflow:hidden;
}
.cta-banner::before {
  content:''; position:absolute; inset:0;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:40px 40px;
}
.cta-banner h2 { font-family:var(--font-serif); font-size:clamp(28px,3.5vw,46px); font-weight:700; color:#fff; margin-bottom:16px; position:relative; z-index:1; }
.cta-banner p  { font-size:16px; color:rgba(255,255,255,.8); margin-bottom:36px; position:relative; z-index:1; }
.cta-banner .btn-white {
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 36px; background:white; color:var(--brand-dim);
  font-size:15px; font-weight:700; text-decoration:none;
  clip-path:polygon(0 0,100% 0,100% 72%,94% 100%,0 100%);
  transition:all .25s; position:relative; z-index:1;
}
.cta-banner .btn-white:hover { background:var(--bg-base); color:var(--brand); box-shadow:0 8px 30px rgba(0,0,0,.25); }

/* Responsive */
@media(max-width:1100px){
  .hcard-stack { width:360px; height:460px; }
  .contact-grid { gap:48px; }
}
@media(max-width:900px){
  .hero-visual{display:none;}
  .so-grid,.rag-grid,.about-grid,.contact-grid{grid-template-columns:1fr;gap:40px;}
  .so-features,.services-grid,.products-grid{grid-template-columns:1fr 1fr;}
  .cases-grid{grid-template-columns:1fr 1fr;}
  #hero{padding:100px 20px 60px; min-height:auto;}
  .hero-title { font-size:clamp(32px,8vw,52px); }
  .hero-actions { flex-direction:column; align-items:stretch; }
  .hero-actions .btn-primary,
  .hero-actions .btn-outline { width:100%; justify-content:center; }
  .cta-banner { padding:52px 20px; }
  .cta-banner .btn-white { width:100%; justify-content:center; }
}
@media(max-width:768px){
  #hero { padding-top:80px; }
  .so-features { grid-template-columns:1fr 1fr; }
  .form-row { grid-template-columns:1fr; }
}
@media(max-width:600px){
  .products-grid,.cases-grid,.so-features,.services-grid,.rag-benefits,.values-grid{grid-template-columns:1fr;}
  .hero-badge { display:none; }
  .contact-grid { gap:28px; }
  .cform { padding:28px 20px; }
  .form-row { grid-template-columns:1fr; }
  .hero-title { font-size:clamp(28px,9vw,40px); }
  .hero-sub { font-size:14px; }
  .so-tagline { font-size:clamp(20px,6vw,28px); }
  .so-desc { font-size:14px; }
  .about-grid { gap:28px; }
  .cta-banner h2 { font-size:clamp(22px,6vw,32px); }
  .cta-banner p { font-size:14px; margin-bottom:24px; }
  #contact-section .contact-grid { grid-template-columns:1fr; }
}