/* ===== 运营页 · 深蓝鎏金高端风（全屏） ===== */
:root{
    --yy-navy:#0c1a3a;
    --yy-navy-2:#102552;
    --yy-navy-3:#081127;
    --yy-gold:#c9a86a;
    --yy-gold-2:#e3c789;
    --yy-grad:linear-gradient(135deg,#e7cd92,#c9a86a);
    --yy-gold-soft:rgba(201,168,106,.12);
    --yy-line:rgba(201,168,106,.20);
    --yy-ink:#1a2238;
    --yy-sub:#5b6478;
    --yy-radius:18px;
    --yy-shadow:0 18px 40px rgba(12,26,58,.10);
    --yy-shadow-lg:0 30px 64px rgba(12,26,58,.18);
}
.yy-sec{padding:110px 0;}
.yy-sec.alt{background:#f4f5f7;}
.yy-sec.dark{background:radial-gradient(120% 120% at 80% 0%,#16306a 0%,#0c1a3a 48%,#081127 100%);color:#fff;}
.yy-wrap{width:100%;max-width:none;margin:0 auto;padding:0 clamp(20px,5vw,80px);}
.yy-head{text-align:center;max-width:780px;margin:0 auto 60px;}
.yy-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--yy-gold);text-transform:uppercase;}
.yy-eyebrow.c{color:var(--yy-gold);}
.yy-eyebrow.light{color:var(--yy-gold-2);}
.yy-head h2{margin:14px 0 14px;font-size:clamp(26px,3.2vw,38px);font-weight:800;color:var(--yy-ink);letter-spacing:.5px;}
.yy-sec.dark .yy-head h2{color:#fff;}
.yy-head p{margin:0;font-size:15px;color:var(--yy-sub);line-height:1.8;}
.yy-sec.dark .yy-head p{color:rgba(255,255,255,.72);}

/* 按钮 */
.yy-btn-primary,.yy-btn-outline,.yy-btn-ghost{display:inline-flex;align-items:center;gap:9px;padding:15px 32px;border-radius:999px;font-size:15px;font-weight:700;text-decoration:none;transition:.35s cubic-bezier(.2,.7,.2,1);}
.yy-btn-primary{background:var(--yy-grad);color:#1a1206;box-shadow:0 14px 30px rgba(201,168,106,.35);}
.yy-btn-primary:hover{gap:14px;transform:translateY(-3px);box-shadow:0 20px 40px rgba(201,168,106,.5);}
.yy-btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(201,168,106,.55);}
.yy-btn-outline:hover{background:rgba(201,168,106,.15);border-color:var(--yy-gold);transform:translateY(-3px);}
.yy-btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.45);}
.yy-btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-3px);}

/* ===== Hero 全屏 ===== */
.yy-hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;background:radial-gradient(130% 130% at 82% 0%,#1a3a7d 0%,#0c1a3a 46%,#070f24 100%);color:#fff;}
.yy-hero-bg{position:absolute;inset:0;overflow:hidden;z-index:0;}
.yy-blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55;}
.yy-hero .yy-blob-1{width:520px;height:520px;background:#c9a86a;top:-160px;right:-80px;opacity:.28;}
.yy-hero .yy-blob-2{width:420px;height:420px;background:#1f3a78;bottom:-150px;left:-90px;opacity:.7;}
.yy-hero .yy-blob-3{width:300px;height:300px;background:#2a4ea0;top:40%;left:46%;opacity:.4;}
.yy-hero .yy-grid{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:54px 54px;mask-image:radial-gradient(120% 90% at 70% 20%,#000 30%,transparent 75%);}
.yy-watermark{position:absolute;right:-2%;bottom:-12%;font-size:46vh;color:rgba(255,255,255,.04);transform:rotate(-12deg);}
.yy-hero-inner{position:relative;z-index:2;max-width:none;margin:0 auto;padding:0 clamp(20px,5vw,80px);width:100%;display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,56px);align-items:center;}
.yy-hero-content{position:relative;}
.yy-eyebrow{margin-bottom:22px;}
.yy-hero-title{margin:0 0 24px;font-size:clamp(34px,5.4vw,64px);font-weight:800;line-height:1.12;letter-spacing:1px;}
.yy-hero-title span{background:var(--yy-grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.yy-hero-sub{margin:0 0 38px;max-width:640px;font-size:clamp(15px,1.6vw,18px);line-height:1.9;color:rgba(255,255,255,.82);}
.yy-hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:54px;}
.yy-hero-stats{display:flex;flex-wrap:wrap;gap:clamp(24px,5vw,64px);}
.yy-stat strong{display:block;font-size:clamp(28px,3.4vw,40px);font-weight:800;background:var(--yy-grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1;}
.yy-stat strong small{font-size:.5em;margin-left:2px;}
.yy-stat span{display:block;margin-top:8px;font-size:13px;color:rgba(255,255,255,.7);letter-spacing:1px;}
/* Hero 右侧图表 */
.yy-hero-chart{position:relative;z-index:2;border-radius:22px;padding:24px 24px 18px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:0 30px 70px rgba(4,10,26,.45),inset 0 1px 0 rgba(255,255,255,.12);}
.yy-chart-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.yy-chart-head h4{margin:0;font-size:15px;font-weight:700;color:#fff;letter-spacing:.5px;}
.yy-chart-head span{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:800;color:#1a1206;background:var(--yy-grad);}
.yy-chart-svg{display:block;width:100%;height:auto;}
.yy-chart-note{margin:6px 0 0;font-size:12px;line-height:1.6;color:rgba(255,255,255,.62);text-align:center;}

/* ===== 面包屑 ===== */
.yy-tags{background:linear-gradient(180deg,#fcfdff 0%,#f3f5f8 100%);border-bottom:1px solid var(--yy-line);box-shadow:0 6px 18px rgba(12,26,58,.04);}
.yy-crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:2px 0;padding:15px clamp(20px,5vw,80px);font-size:14px;}
.yy-crumb{position:relative;display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:9px;color:var(--yy-sub);text-decoration:none;font-weight:600;white-space:nowrap;transition:.3s cubic-bezier(.2,.7,.2,1);}
.yy-crumb i{font-size:13px;color:var(--yy-gold);transition:.3s;}
.yy-crumb:hover{color:var(--yy-ink);background:rgba(201,168,106,.12);}
.yy-crumb:hover i{transform:scale(1.12);}
.yy-crumb.active{color:#1a1206;background:var(--yy-grad);box-shadow:0 10px 22px rgba(201,168,106,.38);}
.yy-crumb.active i{color:#1a1206;}
.yy-crumb:not(:first-child)::before{content:'\f105';font-family:'Font Awesome 7 Free';font-weight:900;font-size:11px;color:#b9bfca;margin-right:13px;}

/* ===== 快捷导航 ===== */
.yy-quick{padding:56px 0 0;}
.yy-quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.yy-quick-card{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:34px 20px;background:#fff;border:1px solid var(--yy-line);border-radius:var(--yy-radius);text-decoration:none;transition:.4s cubic-bezier(.2,.7,.2,1);}
.yy-quick-card:hover{transform:translateY(-8px);border-color:rgba(201,168,106,.5);box-shadow:var(--yy-shadow-lg);}
.yy-quick-ic{width:64px;height:64px;display:flex;align-items:center;justify-content:center;font-size:26px;color:var(--yy-gold);border-radius:18px;background:var(--yy-gold-soft);border:1px solid rgba(201,168,106,.22);margin-bottom:12px;transition:.4s;}
.yy-quick-card:hover .yy-quick-ic{background:var(--yy-grad);color:#1a1206;transform:rotate(-6deg) scale(1.05);}
.yy-quick-t{font-size:18px;font-weight:800;color:var(--yy-ink);}
.yy-quick-d{font-size:13px;color:var(--yy-sub);}

/* ===== 改版升级 ===== */
.yy-rede-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:30px;align-items:stretch;}
.yy-problem,.yy-solution{height:100%;background:#fff;border:1px solid var(--yy-line);border-radius:var(--yy-radius);padding:36px 34px;box-shadow:var(--yy-shadow);}
.yy-problem h3,.yy-solution h3{display:flex;align-items:center;gap:10px;margin:0 0 22px;font-size:19px;font-weight:800;color:var(--yy-ink);}
.yy-problem h3 i{color:#e0683c;}
.yy-solution h3 i{color:var(--yy-gold);}
.yy-problem-list{list-style:none;margin:0;padding:0;display:grid;gap:14px;}
.yy-problem-list li{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--yy-sub);}
.yy-problem-list i{width:22px;height:22px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:11px;color:#fff;background:#e0683c;border-radius:50%;}
.yy-sol-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.yy-sol-item{padding:20px 18px;border-radius:14px;background:#faf8f3;border:1px solid var(--yy-line);transition:.4s;}
.yy-sol-item:hover{transform:translateY(-5px);box-shadow:var(--yy-shadow);}
.yy-sol-ic{width:46px;height:46px;display:flex;align-items:center;justify-content:center;font-size:19px;color:var(--yy-gold);border-radius:12px;background:var(--yy-gold-soft);margin-bottom:14px;}
.yy-sol-item h4{margin:0 0 6px;font-size:16px;font-weight:800;color:var(--yy-ink);}
.yy-sol-item p{margin:0;font-size:13px;line-height:1.7;color:var(--yy-sub);}

/* ===== 维护托管 ===== */
.yy-maint-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.yy-maint-card{background:#fff;border:1px solid var(--yy-line);border-radius:var(--yy-radius);padding:34px 28px 30px;transition:.4s cubic-bezier(.2,.7,.2,1);display:flex;flex-direction:column;}
.yy-maint-card:hover{transform:translateY(-8px);box-shadow:var(--yy-shadow-lg);border-color:rgba(201,168,106,.5);}
.yy-maint-ic{width:60px;height:60px;margin-bottom:18px;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--yy-gold);border-radius:15px;background:var(--yy-gold-soft);border:1px solid rgba(201,168,106,.22);}
.yy-maint-card h3{margin:0 0 16px;font-size:19px;font-weight:800;color:var(--yy-ink);}
.yy-maint-list{list-style:none;margin:0 0 20px;padding:0;display:grid;gap:10px;flex:1;}
.yy-maint-list li{position:relative;padding-left:18px;font-size:13.5px;color:var(--yy-sub);line-height:1.5;}
.yy-maint-list li::before{content:'';position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:2px;background:var(--yy-grad);transform:rotate(45deg);}
.yy-card-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--yy-gold);text-decoration:none;transition:.3s;}
.yy-card-link:hover{gap:11px;}

/* ===== 内容运营 ===== */
.yy-oper-box{display:grid;grid-template-columns:300px 1fr;gap:0;background:#fff;border:1px solid var(--yy-line);border-radius:var(--yy-radius);overflow:hidden;box-shadow:var(--yy-shadow);}
.yy-oper-tabs{display:flex;flex-direction:column;background:#0c1a3a;padding:14px;}
.yy-tab{display:flex;align-items:center;gap:14px;padding:18px 20px;border-radius:12px;color:rgba(255,255,255,.7);font-size:15px;font-weight:700;cursor:pointer;transition:.3s;border-left:3px solid transparent;}
.yy-tab i{font-size:18px;color:var(--yy-gold);}
.yy-tab:hover{background:rgba(255,255,255,.06);color:#fff;}
.yy-tab.active{background:var(--yy-grad);color:#1a1206;}
.yy-tab.active i{color:#1a1206;}
.yy-oper-panels{padding:40px 44px;}
.yy-panel{display:none;animation:yyFade .5s ease;}
.yy-panel.active{display:block;}
@keyframes yyFade{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:none;}}
.yy-panel h3{margin:0 0 10px;font-size:22px;font-weight:800;color:var(--yy-ink);}
.yy-panel-desc{margin:0 0 22px;font-size:14px;color:var(--yy-sub);line-height:1.8;}
.yy-panel-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:14px 28px;}
.yy-panel-list li{display:flex;align-items:center;gap:11px;font-size:14px;color:var(--yy-sub);}
.yy-panel-list i{width:20px;height:20px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:10px;color:#fff;background:var(--yy-grad);border-radius:50%;}

/* ===== 为什么选择 ===== */
.yy-adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.yy-adv-item{display:flex;gap:20px;align-items:flex-start;background:#fff;border:1px solid var(--yy-line);border-radius:var(--yy-radius);padding:30px 30px;transition:.4s cubic-bezier(.2,.7,.2,1);}
.yy-adv-item:hover{transform:translateY(-6px);box-shadow:var(--yy-shadow-lg);border-color:rgba(201,168,106,.4);}
.yy-adv-no{font-size:40px;font-weight:800;line-height:1;background:var(--yy-grad);-webkit-background-clip:text;background-clip:text;color:transparent;flex-shrink:0;}
.yy-adv-item h4{margin:0 0 8px;font-size:18px;font-weight:800;color:var(--yy-ink);}
.yy-adv-item p{margin:0;font-size:13.5px;line-height:1.8;color:var(--yy-sub);}

/* ===== 服务流程（深色） ===== */
.yy-process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.yy-proc-card{position:relative;background:rgba(255,255,255,.05);border:1px solid rgba(201,168,106,.28);border-radius:var(--yy-radius);padding:34px 28px 30px;transition:.4s cubic-bezier(.2,.7,.2,1);overflow:hidden;}
.yy-proc-card::before{content:'';position:absolute;left:0;top:0;width:100%;height:3px;background:var(--yy-grad);transform:scaleX(0);transform-origin:left;transition:.4s;}
.yy-proc-card:hover{transform:translateY(-8px);background:rgba(255,255,255,.09);box-shadow:0 30px 64px rgba(0,0,0,.35);}
.yy-proc-card:hover::before{transform:scaleX(1);}
.yy-proc-no{position:absolute;right:22px;top:14px;font-size:46px;font-weight:800;font-style:italic;color:rgba(255,255,255,.08);}
.yy-proc-ic{width:58px;height:58px;margin-bottom:18px;display:flex;align-items:center;justify-content:center;font-size:23px;color:var(--yy-gold-2);border-radius:15px;background:rgba(201,168,106,.14);border:1px solid rgba(201,168,106,.3);}
.yy-proc-card h3{margin:0 0 8px;font-size:19px;font-weight:800;color:#fff;}
.yy-proc-card p{margin:0 0 16px;font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.72);}
.yy-proc-tags{display:flex;flex-wrap:wrap;gap:8px;}
.yy-proc-tags span{padding:5px 13px;font-size:12px;font-weight:600;color:var(--yy-gold-2);background:rgba(201,168,106,.12);border-radius:999px;}

/* ===== FAQ ===== */
.yy-faq-list{max-width:900px;margin:0 auto;display:grid;gap:16px;}
.yy-faq-item{background:#fff;border:1px solid var(--yy-line);border-radius:14px;overflow:hidden;transition:.3s;}
.yy-faq-item.active{border-color:rgba(201,168,106,.5);box-shadow:var(--yy-shadow);}
.yy-faq-q{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 26px;}
.yy-faq-q h4{margin:0;font-size:16px;font-weight:700;color:var(--yy-ink);}
.yy-faq-q i{font-size:14px;color:var(--yy-gold);transition:.3s;flex-shrink:0;}
.yy-faq-item.active .yy-faq-q i{transform:rotate(180deg);}
.yy-faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;}
.yy-faq-item.active .yy-faq-a{max-height:240px;}
.yy-faq-a p{margin:0;padding:0 26px 22px;font-size:14px;line-height:1.85;color:var(--yy-sub);}

/* ===== CTA ===== */
.yy-cta{position:relative;overflow:hidden;background:radial-gradient(120% 120% at 50% 100%,var(--yy-navy-3) 0%,var(--yy-navy-2) 45%,var(--yy-navy) 100%);padding:104px 20px;}
.yy-cta-bg{position:absolute;inset:0;overflow:hidden;}
.yy-cta-bg .yy-blob-1{width:380px;height:380px;background:#c9a86a;top:-120px;left:-80px;opacity:.28;}
.yy-cta-bg .yy-blob-2{width:340px;height:340px;background:#1f3a78;bottom:-120px;right:-60px;opacity:.6;}
.yy-cta-content{position:relative;z-index:2;max-width:780px;margin:0 auto;text-align:center;color:#fff;}
.yy-cta-content h2{margin:0 0 14px;font-size:clamp(24px,3.4vw,36px);font-weight:800;letter-spacing:.5px;}
.yy-cta-content p{margin:0 0 34px;font-size:16px;color:rgba(255,255,255,.78);}
.yy-cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

/* ===== 滚动揭示 ===== */
.yy-reveal{opacity:0;transform:translateY(34px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);}
.yy-reveal.in{opacity:1;transform:none;}

/* ===== 响应式 ===== */
@media (max-width:1100px){
    .yy-quick-grid{grid-template-columns:repeat(2,1fr);}
    .yy-maint-grid{grid-template-columns:repeat(2,1fr);}
    .yy-adv-grid,.yy-process-grid{grid-template-columns:repeat(2,1fr);}
    .yy-rede-layout{grid-template-columns:1fr;}
}
@media (max-width:768px){
    .yy-sec{padding:64px 16px;}
    .yy-head{margin-bottom:40px;}
    .yy-hero{align-items:flex-start;padding-top:120px;padding-bottom:60px;}
    .yy-hero-inner{grid-template-columns:1fr;gap:36px;}
    .yy-hero-chart{order:2;}
    .yy-hero-stats{gap:22px 36px;}
    .yy-quick-grid{grid-template-columns:1fr 1fr;gap:14px;}
    .yy-sol-grid{grid-template-columns:1fr;}
    .yy-oper-box{grid-template-columns:1fr;}
    .yy-oper-tabs{flex-direction:row;overflow-x:auto;}
    .yy-tab{border-left:none;border-bottom:3px solid transparent;white-space:nowrap;}
    .yy-oper-panels{padding:28px 22px;}
    .yy-panel-list{grid-template-columns:1fr;}
    .yy-maint-grid,.yy-adv-grid,.yy-process-grid{grid-template-columns:1fr;}
}
@media (max-width:480px){
    .yy-hero-stats{gap:18px 28px;}
    .yy-stat strong{font-size:26px;}
}