/* ============================================================
   www.aijingyu.cn 首页改版样式（仅首页加载，不影响内页）
   叙事来源：os.aijingyu.cn/landing-v2.html（优品认证吊牌系统）
   ============================================================ */
:root{
  --jy-ink:#0f172a;
  --jy-sub:#475569;
  --jy-mut:#8a97a8;
  --jy-blue:#2563eb;
  --jy-cyan:#0891b2;
  --jy-line:#e4eaf2;
  --jy-bg2:#f6f9fe;
  --jy-grad:linear-gradient(120deg,#2563eb,#0891b2);
  --jy-shadow:0 18px 44px rgba(15,23,42,.10);
}
.jy-wrap{max-width:1180px;margin:0 auto;padding:0 22px;}
section.jy{padding:84px 0;}
.jy-kicker{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;letter-spacing:.16em;color:var(--jy-blue);background:rgba(37,99,235,.08);border:1px solid rgba(37,99,235,.18);padding:7px 14px;border-radius:999px;}
.jy-h2{font-size:clamp(26px,3.2vw,38px);font-weight:900;color:var(--jy-ink);line-height:1.4;margin:18px 0 0;letter-spacing:.5px;}
.jy-h2 .g{background:var(--jy-grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.jy-sub{color:var(--jy-sub);font-size:15.5px;line-height:1.9;margin-top:14px;max-width:820px;}
.jy-sub b{color:var(--jy-blue);}
.jy-center{text-align:center;}
.jy-center .jy-sub{margin-left:auto;margin-right:auto;}

/* 滚动浮现 */
.jy-rv{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease;}
.jy-rv.in{opacity:1;transform:none;}

/* ============ Hero ============ */
.jy-hero{position:relative;overflow:hidden;padding:64px 0 88px;background:
  radial-gradient(900px 420px at 88% -10%,rgba(8,145,178,.10),transparent 60%),
  radial-gradient(760px 400px at -6% 108%,rgba(37,99,235,.10),transparent 60%),#fff;}
.jy-hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:52px;align-items:center;}
.jy-hero h1{font-size:clamp(40px,5vw,62px);font-weight:900;color:var(--jy-ink);margin:20px 0 6px;letter-spacing:2px;line-height:1.1;}
.jy-slogan{font-size:clamp(17px,2vw,21px);font-weight:700;color:var(--jy-ink);line-height:1.7;}
.jy-slogan em{font-style:normal;background:var(--jy-grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.jy-desc{color:var(--jy-sub);font-size:15px;line-height:2;margin-top:18px;}
.jy-desc b{color:var(--jy-ink);}
.jy-ctas{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.jy-btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:999px;font-size:15px;font-weight:700;text-decoration:none;transition:.25s;}
.jy-btn-pri{background:var(--jy-grad);color:#fff;box-shadow:0 12px 30px rgba(37,99,235,.35);}
.jy-btn-pri:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(37,99,235,.45);color:#fff;}
.jy-btn-gho{border:1.5px solid var(--jy-line);color:var(--jy-ink);background:#fff;}
.jy-btn-gho:hover{border-color:var(--jy-blue);color:var(--jy-blue);transform:translateY(-2px);}
.jy-hero-vis{position:relative;}
.jy-hero-photo{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:22px;box-shadow:var(--jy-shadow);display:block;}
.jy-hero-chips{position:absolute;left:18px;right:18px;bottom:18px;display:flex;gap:8px;flex-wrap:wrap;}
.jy-chip{background:rgba(255,255,255,.92);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.7);color:var(--jy-ink);font-size:12.5px;font-weight:700;padding:8px 14px;border-radius:999px;box-shadow:0 6px 18px rgba(15,23,42,.14);}
.jy-hero-tag{position:absolute;top:-14px;right:-8px;background:var(--jy-grad);color:#fff;font-size:13px;font-weight:800;padding:10px 18px;border-radius:14px;box-shadow:0 12px 28px rgba(37,99,235,.4);transform:rotate(3deg);}

/* ============ 痛点 ============ */
.jy-pain{background:linear-gradient(180deg,var(--jy-bg2),#fff);}
.jy-pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:42px;}
.jy-pcard{background:#fff;border:1px solid var(--jy-line);border-radius:18px;padding:26px 26px 24px;display:flex;gap:16px;box-shadow:0 8px 24px rgba(15,23,42,.05);transition:.25s;}
.jy-pcard:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(15,23,42,.10);}
.jy-pcard .x{flex:none;width:38px;height:38px;border-radius:12px;background:#fef2f2;color:#dc2626;font-weight:900;font-size:17px;display:flex;align-items:center;justify-content:center;border:1px solid #fecaca;}
.jy-pcard h3{margin:2px 0 8px;font-size:16.5px;font-weight:800;color:var(--jy-ink);}
.jy-pcard p{margin:0;color:var(--jy-sub);font-size:13.5px;line-height:1.9;}
.jy-shift{margin-top:34px;background:var(--jy-grad);border-radius:18px;padding:26px 30px;color:#fff;box-shadow:0 16px 36px rgba(37,99,235,.30);}
.jy-shift .t{font-size:18px;font-weight:800;}
.jy-shift p{margin:8px 0 0;font-size:14px;line-height:1.9;color:rgba(255,255,255,.92);}
.jy-shift b{color:#fff;}

/* ============ 核心能力 ============ */
.jy-cap-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:42px;}
.jy-ccard{background:#fff;border:1px solid var(--jy-line);border-radius:18px;padding:28px;box-shadow:0 8px 24px rgba(15,23,42,.05);transition:.25s;}
.jy-ccard:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(15,23,42,.11);}
.jy-ccard-top{display:flex;align-items:center;gap:14px;}
.jy-cic{flex:none;width:50px;height:50px;border-radius:14px;background:rgba(37,99,235,.09);border:1px solid rgba(37,99,235,.18);display:flex;align-items:center;justify-content:center;color:var(--jy-blue);}
.jy-cic svg{width:26px;height:26px;}
.jy-ccard-top h3{margin:0;font-size:16.5px;font-weight:800;color:var(--jy-ink);}
.jy-badge{margin-left:auto;flex:none;font-size:11.5px;font-weight:800;color:#fff;background:var(--jy-grad);padding:5px 12px;border-radius:999px;}
.jy-ccard>p{color:var(--jy-sub);font-size:13.5px;line-height:1.95;margin:16px 0 12px;}
.jy-more{list-style:none;margin:0;padding:0;}
.jy-more li{position:relative;padding:5px 0 5px 24px;color:var(--jy-sub);font-size:13px;line-height:1.8;}
.jy-more li::before{content:"✓";position:absolute;left:0;top:5px;color:var(--jy-cyan);font-weight:900;}
.jy-more b{color:var(--jy-ink);}

/* ============ 两套落地路径（#paths 核心） ============ */
.jy-paths{background:linear-gradient(180deg,#fff,var(--jy-bg2));}
.jy-path-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:44px;}
.jy-path{background:#fff;border:1px solid var(--jy-line);border-radius:22px;overflow:hidden;box-shadow:0 10px 30px rgba(15,23,42,.07);display:flex;flex-direction:column;transition:.25s;}
.jy-path:hover{transform:translateY(-5px);box-shadow:0 22px 48px rgba(15,23,42,.13);}
.jy-path.main{border:1.5px solid rgba(37,99,235,.45);}
.jy-path-img{position:relative;height:250px;overflow:hidden;}
.jy-path-img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s;}
.jy-path:hover .jy-path-img img{transform:scale(1.04);}
.jy-path-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(15,23,42,.28));}
.jy-path-flag{position:absolute;left:16px;top:16px;z-index:2;font-size:12px;font-weight:800;color:#fff;background:var(--jy-grad);padding:7px 14px;border-radius:999px;box-shadow:0 8px 20px rgba(37,99,235,.35);}
.jy-path-flag.opt{background:linear-gradient(120deg,#d97706,#f59e0b);box-shadow:0 8px 20px rgba(217,119,6,.35);}
.jy-path-body{padding:26px 28px 24px;display:flex;flex-direction:column;flex:1;}
.jy-path-body h3{margin:0;font-size:20px;font-weight:900;color:var(--jy-ink);}
.jy-path-fit{margin:12px 0 14px;color:var(--jy-sub);font-size:13.5px;line-height:1.9;background:var(--jy-bg2);border:1px dashed var(--jy-line);border-radius:12px;padding:12px 14px;}
.jy-path-fit b{color:var(--jy-blue);}
.jy-path-body ul{list-style:none;margin:0;padding:0;}
.jy-path-body ul li{position:relative;padding:6px 0 6px 26px;color:var(--jy-sub);font-size:13.5px;line-height:1.8;}
.jy-path-body ul li::before{content:"✓";position:absolute;left:0;top:6px;color:var(--jy-blue);font-weight:900;}
.jy-path-note{margin-top:auto;padding-top:16px;color:var(--jy-mut);font-size:12.5px;line-height:1.8;}
.jy-path-note b{color:var(--jy-ink);}

/* ============ 业务价值 ============ */
.jy-value-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center;margin-top:10px;}
.jy-value-photo{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:22px;box-shadow:var(--jy-shadow);display:block;}
.jy-vlist{margin-top:30px;display:flex;flex-direction:column;gap:14px;}
.jy-vrow{display:flex;gap:16px;background:#fff;border:1px solid var(--jy-line);border-radius:16px;padding:18px 20px;box-shadow:0 6px 18px rgba(15,23,42,.04);transition:.25s;}
.jy-vrow:hover{transform:translateX(4px);box-shadow:0 12px 28px rgba(15,23,42,.09);}
.jy-vic{flex:none;width:46px;height:46px;border-radius:13px;background:rgba(8,145,178,.09);border:1px solid rgba(8,145,178,.20);display:flex;align-items:center;justify-content:center;font-size:22px;}
.jy-vrow h3{margin:0 0 4px;font-size:15.5px;font-weight:800;color:var(--jy-ink);}
.jy-vrow p{margin:0;color:var(--jy-sub);font-size:13px;line-height:1.85;}

/* ============ 在线体验 ============ */
.jy-demo{background:linear-gradient(180deg,var(--jy-bg2),#fff);}
.jy-demo-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:48px;align-items:center;margin-top:10px;}
.jy-demo-photo{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:22px;box-shadow:var(--jy-shadow);display:block;}
.jy-steps{list-style:none;margin:28px 0 0;padding:0;display:flex;flex-direction:column;gap:14px;}
.jy-steps li{display:flex;gap:16px;}
.jy-steps .n{flex:none;width:34px;height:34px;border-radius:50%;background:var(--jy-grad);color:#fff;font-weight:900;font-size:15px;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 18px rgba(37,99,235,.30);}
.jy-steps .tx b{display:block;font-size:15px;color:var(--jy-ink);font-weight:800;}
.jy-steps .tx span{display:block;margin-top:3px;color:var(--jy-sub);font-size:13px;line-height:1.8;}
.jy-demo-tip{margin-top:20px;color:var(--jy-sub);font-size:12.5px;line-height:1.9;background:#fff;border:1px solid var(--jy-line);border-radius:12px;padding:12px 16px;}
.jy-demo-tip b{color:var(--jy-blue);}
.jy-demo-code{margin-top:16px;display:inline-block;font-family:Consolas,monospace;font-size:14px;font-weight:800;letter-spacing:2px;color:var(--jy-blue);background:rgba(37,99,235,.07);border:1px dashed rgba(37,99,235,.4);border-radius:12px;padding:10px 18px;}

/* ============ 新闻 ============ */
.jy-news{background:#fff;}
.jy-news-list{margin-top:36px;display:flex;flex-direction:column;gap:12px;}
.jy-nrow{display:flex;align-items:center;gap:20px;background:var(--jy-bg2);border:1px solid var(--jy-line);border-radius:14px;padding:16px 22px;text-decoration:none;transition:.25s;}
.jy-nrow:hover{background:#fff;border-color:rgba(37,99,235,.45);box-shadow:0 10px 26px rgba(15,23,42,.08);transform:translateX(4px);}
.jy-ndate{flex:none;font-size:12.5px;font-weight:700;color:var(--jy-mut);font-family:Consolas,monospace;letter-spacing:.5px;}
.jy-ntitle{flex:1;min-width:0;font-size:15px;font-weight:700;color:var(--jy-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.jy-narrow{flex:none;color:var(--jy-blue);font-weight:900;}
.jy-morebtn{margin-top:26px;text-align:center;}
.jy-morebtn a{display:inline-flex;align-items:center;gap:6px;padding:11px 30px;border-radius:999px;border:1.5px solid var(--jy-line);color:var(--jy-sub);font-size:14px;font-weight:700;text-decoration:none;transition:.25s;}
.jy-morebtn a:hover{border-color:var(--jy-blue);color:var(--jy-blue);}

/* ============ CTA ============ */
.jy-cta-sec{padding:30px 0 96px;background:#fff;}
.jy-cta-panel{position:relative;overflow:hidden;border-radius:26px;background:linear-gradient(130deg,#101d3a,#123a6e 55%,#0c4a5c);padding:64px 40px;text-align:center;box-shadow:0 24px 60px rgba(16,29,58,.35);}
.jy-cta-panel::before{content:"";position:absolute;inset:-40%;background:radial-gradient(circle at 28% 22%,rgba(8,145,178,.28),transparent 45%),radial-gradient(circle at 74% 80%,rgba(37,99,235,.30),transparent 45%);pointer-events:none;}
.jy-cta-panel h2{position:relative;color:#fff;font-size:clamp(22px,3vw,32px);font-weight:900;line-height:1.6;margin:0;letter-spacing:1px;}
.jy-cta-panel h2 .g{background:linear-gradient(120deg,#7dd3fc,#67e8f9);-webkit-background-clip:text;background-clip:text;color:transparent;}
.jy-cta-panel .note{position:relative;color:rgba(255,255,255,.78);font-size:14px;margin-top:14px;}
.jy-cta-btns{position:relative;display:flex;gap:14px;justify-content:center;margin-top:30px;flex-wrap:wrap;}
.jy-cta-btns .jy-btn-gho{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.35);color:#fff;}
.jy-cta-btns .jy-btn-gho:hover{border-color:#7dd3fc;color:#7dd3fc;}

/* ============ 响应式 ============ */
@media (max-width:960px){
  section.jy{padding:60px 0;}
  .jy-hero{padding:40px 0 64px;}
  .jy-hero-grid,.jy-value-grid,.jy-demo-grid{grid-template-columns:1fr;gap:36px;}
  .jy-pain-grid,.jy-cap-grid{grid-template-columns:1fr;}
  .jy-path-grid{grid-template-columns:1fr;gap:18px;}
  .jy-hero-photo{aspect-ratio:4/3;}
  .jy-ntitle{white-space:normal;}
}

/* ============ Hero 轮播（参考 kpop 全屏海报式） ============ */
.jy-slider{position:relative;width:100%;aspect-ratio:4/3;border-radius:22px;overflow:hidden;box-shadow:var(--jy-shadow);background:#e2e8f0;}
.jy-slide{position:absolute;inset:0;opacity:0;transition:opacity .9s ease;}
.jy-slide.on{opacity:1;}
.jy-slide img{width:100%;height:100%;object-fit:cover;display:block;}
.jy-slide-cap{position:absolute;left:0;right:0;bottom:0;padding:64px 24px 22px;background:linear-gradient(180deg,rgba(15,23,42,0),rgba(15,23,42,.82));color:#fff;}
.jy-slide-cap b{display:block;font-size:19.5px;font-weight:900;margin-bottom:5px;letter-spacing:.3px;text-shadow:0 2px 8px rgba(0,0,0,.35);}
.jy-slide-cap span{font-size:13.5px;opacity:.94;text-shadow:0 1px 6px rgba(0,0,0,.35);}
.jy-dots{position:absolute;right:16px;top:16px;display:flex;gap:7px;z-index:2;}
.jy-dots i{width:9px;height:9px;border-radius:6px;background:rgba(255,255,255,.55);cursor:pointer;transition:.25s;box-shadow:0 1px 4px rgba(0,0,0,.35);}
.jy-dots i.on{background:#fff;width:24px;}
@media(max-width:860px){
  .jy-slider{aspect-ratio:16/10;}
  .jy-slide-cap b{font-size:16.5px;}
  .jy-slide-cap span{font-size:12.5px;}
}

/* ============ 首页导航修复 ============
   旧首页顶部是全屏深色轮播，#index #header 为透明底+白字；
   新首页 hero 是浅色背景，透明导航白字不可见，恢复全站深色底 */
#index #header{background-color:#18191b;box-shadow:0 2px 10px rgba(0,0,0,.18);}

/* ============ 关于我们（深色山景背景，大气版） ============ */
.jy-about .jy-about-slogan{font-size:27px;font-weight:900;color:#fff;letter-spacing:1.5px;line-height:1.5;margin-bottom:16px;text-shadow:0 2px 10px rgba(0,0,0,.35);}
.jy-about .jy-about-slogan em{font-style:normal;color:#e1b44f;position:relative;padding-bottom:4px;}
.jy-about .jy-about-slogan em::after{content:'';position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:2px;background:linear-gradient(90deg,#e1b44f,rgba(225,180,79,.15));}
.jy-about .jy-about-desc{font-size:14.5px;line-height:2.05;color:rgba(255,255,255,.82);max-width:560px;text-align:justify;margin-bottom:6px;}
.jy-about .jy-about-desc b{color:#e1b44f;font-weight:700;}
@media(max-width:860px){
  .jy-about .jy-about-slogan{font-size:21px;letter-spacing:1px;}
  .jy-about .jy-about-desc{font-size:13.5px;}
}