/* ═══════════ 设计变量 ═══════════ */
:root{
    --grp-navy:#0a1126;
    --grp-navy-2:#0d1430;
    --grp-ink:#1f2937;
    --grp-slate:#5b6478;
    --grp-line:#e7ebf3;
    --grp-bg:#f6f8fc;
    --grp-bg-2:#eef2f9;
    --grp-indigo:#6366f1;
    --grp-violet:#a855f7;
    --grp-grad:linear-gradient(135deg,#6366f1 0%,#a855f7 100%);
    --grp-grad-soft:linear-gradient(135deg,rgba(99,102,241,.14),rgba(168,85,247,.10));
    --grp-shadow:0 18px 44px rgba(15,23,42,.08);
    --grp-shadow-lg:0 40px 80px rgba(10,17,38,.18);
}

/* ═══════════ 通用 ═══════════ */
.grp-reveal{opacity:0;transform:translateY(30px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1);}
.grp-reveal.in{opacity:1;transform:none;}

.grp-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--grp-indigo);text-transform:uppercase;}
.grp-eyebrow i{font-size:13px;}
.grp-eyebrow-dark{color:var(--grp-indigo);}
.grp-accent{background:var(--grp-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.grp-sub{font-size:15.5px;color:rgba(255,255,255,.62);line-height:1.85;text-align:center;margin:14px auto 0;max-width:640px;}
.grp-sub-dark{color:var(--grp-slate);}

.grp-head{text-align:center;margin-bottom:64px;}
.grp-head-light .grp-eyebrow{color:#a5b4fc;}
.grp-title{position:relative;font-size:clamp(28px,3.6vw,42px);font-weight:800;line-height:1.22;margin:18px 0 0;color:var(--grp-ink);letter-spacing:-.5px;}
.grp-head-light .grp-title{color:#fff;}
.grp-divider{display:flex;align-items:center;justify-content:center;gap:12px;margin:22px auto 0;}
.grp-divider span{width:54px;height:1px;background:linear-gradient(90deg,transparent,var(--grp-indigo));}
.grp-divider span:last-child{background:linear-gradient(90deg,var(--grp-indigo),transparent);}
.grp-divider i{color:var(--grp-indigo);font-size:11px;transform:rotate(45deg);}

/* 按钮 */
.grp-btn{display:inline-flex;align-items:center;gap:10px;padding:15px 34px;border-radius:50px;font-size:15.5px;font-weight:700;text-decoration:none;transition:all .35s cubic-bezier(.16,1,.3,1);}
.grp-btn-primary{background:var(--grp-grad);color:#fff;box-shadow:0 14px 32px rgba(99,102,241,.34);}
.grp-btn-primary:hover{transform:translateY(-3px);box-shadow:0 20px 44px rgba(99,102,241,.45);}
.grp-btn-ghost{border:1.5px solid rgba(255,255,255,.35);color:#fff;}
.grp-btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.12);transform:translateY(-3px);}

/* ═══════════ 英雄 Banner（全屏） ═══════════ */
.grp-hero{position:relative;min-height:100vh;min-height:100dvh;display:flex;align-items:center;overflow:hidden;padding:140px 0 90px;background:radial-gradient(120% 120% at 80% 0%,#13204a 0%,#0a1126 45%,var(--grp-navy) 100%);}
.grp-hero-bg{position:absolute;inset:0;z-index:0;overflow:hidden;}
.grp-orb{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;}
.grp-orb-1{width:420px;height:420px;background:radial-gradient(circle,#6366f1,transparent 70%);top:-120px;right:-80px;}
.grp-orb-2{width:360px;height:360px;background:radial-gradient(circle,#a855f7,transparent 70%);bottom:-140px;left:-100px;opacity:.45;}
.grp-orb-3{width:260px;height:260px;background:radial-gradient(circle,#38bdf8,transparent 70%);top:40%;left:42%;opacity:.30;}
.grp-grid-overlay{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:54px 54px;mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 78%);-webkit-mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 78%);}

.grp-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;width:100%;}
.grp-hero-text .grp-eyebrow{color:#a5b4fc;}
.grp-hero-title{font-size:clamp(38px,5.4vw,64px);font-weight:850;line-height:1.1;margin:18px 0 0;color:#fff;letter-spacing:-1px;}
.grp-hero-desc{font-size:clamp(18px,2.2vw,24px);font-weight:600;color:#c7d2fe;margin:18px 0 8px;}
.grp-hero-sub{font-size:16px;line-height:1.85;color:rgba(255,255,255,.66);max-width:520px;margin:0;}
.grp-hero-feats{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 36px;}
.grp-feat{display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:50px;font-size:13.5px;font-weight:500;color:#e0e7ff;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(8px);}
.grp-feat i{color:#4ade80;font-size:12px;}
.grp-hero-actions{display:flex;flex-wrap:wrap;gap:16px;}

/* 架构图 */
.grp-hero-visual{display:flex;justify-content:center;}
.grp-visual-card{position:relative;width:100%;max-width:440px;padding:30px;border-radius:26px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);box-shadow:var(--grp-shadow-lg);backdrop-filter:blur(14px);}
.grp-visual-card-sm{max-width:480px;}
.grp-org{width:100%;height:auto;display:block;overflow:visible;}
.grp-org .grp-links line{stroke:rgba(165,180,252,.45);stroke-width:1.5;stroke-dasharray:5 5;}
.grp-org .grp-node rect{fill:url(#grpGradSub);stroke:rgba(255,255,255,.5);stroke-width:1;filter:drop-shadow(0 8px 18px rgba(56,80,160,.45));}
.grp-org .grp-node-hq rect{fill:url(#grpGradHq);}
.grp-org .grp-node text{fill:#fff;font-size:15px;font-weight:700;text-anchor:middle;font-family:inherit;}
.grp-visual-badge{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:22px;padding:12px 18px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);font-size:14px;color:#e0e7ff;}
.grp-visual-badge b{font-size:18px;font-weight:800;color:#fff;background:var(--grp-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.grp-visual-badge i{color:#a5b4fc;font-size:12px;}

.grp-scroll-hint{position:absolute;left:50%;bottom:30px;transform:translateX(-50%);z-index:3;color:rgba(255,255,255,.6);font-size:20px;animation:bob 1.8s ease-in-out infinite;}
@keyframes bob{0%,100%{transform:translate(-50%,0);}50%{transform:translate(-50%,10px);}}

/* ═══════════ 服务标签 ═══════════ */
.grp-tags{padding:26px 0;background:#fff;border-bottom:1px solid var(--grp-line);position:relative;z-index:3;}
.grp-tags-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.grp-tag{padding:10px 22px;border-radius:50px;font-size:14px;font-weight:600;color:var(--grp-slate);text-decoration:none;background:var(--grp-bg);border:1px solid var(--grp-line);transition:all .3s cubic-bezier(.16,1,.3,1);}
.grp-tag:hover{color:#fff;background:var(--grp-grad);border-color:transparent;transform:translateY(-2px);box-shadow:0 8px 18px rgba(99,102,241,.28);}
.grp-tag.active{color:#fff;background:var(--grp-grad);border-color:transparent;box-shadow:0 8px 18px rgba(99,102,241,.3);}

/* ═══════════ 介绍 ═══════════ */
.grp-intro{padding:104px 0;background:var(--grp-bg);}
.grp-intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center;}
.grp-intro-text p{font-size:16px;line-height:1.9;color:var(--grp-slate);margin:0 0 18px;}
.grp-intro-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:34px;}
.grp-istat{display:flex;flex-direction:column;align-items:center;gap:8px;padding:20px 12px;border-radius:16px;background:#fff;border:1px solid var(--grp-line);box-shadow:0 10px 26px rgba(15,23,42,.05);transition:all .35s;}
.grp-istat:hover{transform:translateY(-5px);box-shadow:0 16px 36px rgba(15,23,42,.1);}
.grp-istat i{font-size:26px;background:var(--grp-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.grp-istat span{font-size:13.5px;font-weight:600;color:var(--grp-ink);}

.grp-glass{padding:38px 34px;border-radius:22px;background:linear-gradient(135deg,rgba(99,102,241,.10),rgba(168,85,247,.06));border:1px solid rgba(99,102,241,.18);box-shadow:var(--grp-shadow);backdrop-filter:blur(6px);}
.grp-glass-row{display:flex;align-items:center;gap:14px;padding:16px 18px;margin-bottom:12px;border-radius:14px;background:#fff;font-size:15px;font-weight:600;color:var(--grp-ink);box-shadow:0 6px 18px rgba(15,23,42,.05);}
.grp-glass-row:last-of-type{margin-bottom:0;}
.grp-glass-dot{width:10px;height:10px;border-radius:50%;background:var(--grp-grad);flex-shrink:0;}
.grp-glass-foot{margin-top:18px;padding-top:18px;border-top:1px dashed rgba(99,102,241,.25);text-align:center;font-size:14px;font-weight:700;color:var(--grp-indigo);letter-spacing:.5px;}

/* ═══════════ 核心价值（深色） ═══════════ */
.grp-values{padding:108px 0;background:radial-gradient(120% 120% at 20% 0%,#13204a 0%,#0a1126 45%,var(--grp-navy) 100%);overflow:hidden;}
.grp-values-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.grp-value{position:relative;padding:34px 28px;border-radius:20px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(10px);transition:all .4s cubic-bezier(.16,1,.3,1);}
.grp-value:hover{transform:translateY(-8px);background:rgba(255,255,255,.09);border-color:rgba(165,180,252,.45);box-shadow:0 26px 50px rgba(10,17,38,.4);}
.grp-value-ico{display:inline-flex;align-items:center;justify-content:center;width:58px;height:58px;border-radius:16px;background:var(--grp-grad-soft);color:#a5b4fc;font-size:26px;margin-bottom:20px;transition:all .4s;}
.grp-value:hover .grp-value-ico{background:var(--grp-grad);color:#fff;transform:scale(1.06);}
.grp-value h3{margin:0 0 12px;font-size:19px;font-weight:700;color:#fff;}
.grp-value p{margin:0;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.6);}

/* ═══════════ 功能模块 ═══════════ */
.grp-modules{padding:104px 0;background:#fff;}
.grp-modules-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
.grp-module{position:relative;overflow:hidden;padding:36px 34px 30px;border-radius:22px;background:var(--grp-bg);border:1px solid var(--grp-line);transition:all .4s cubic-bezier(.16,1,.3,1);}
.grp-module::before{content:'';position:absolute;left:0;top:0;width:5px;height:100%;background:var(--grp-grad);opacity:0;transition:opacity .4s;}
.grp-module:hover{transform:translateY(-6px);background:#fff;box-shadow:var(--grp-shadow-lg);border-color:transparent;}
.grp-module:hover::before{opacity:1;}
.grp-module-no{display:block;font-size:46px;font-weight:850;line-height:1;letter-spacing:1px;color:transparent;-webkit-text-stroke:1.5px rgba(99,102,241,.3);margin-bottom:14px;transition:color .4s;}
.grp-module:hover .grp-module-no{color:var(--grp-grad);-webkit-text-stroke:0;}
.grp-module h3{margin:0 0 18px;font-size:21px;font-weight:750;color:var(--grp-ink);}
.grp-module ul{list-style:none;margin:0;padding:0;}
.grp-module li{display:flex;align-items:center;gap:12px;padding:10px 0;font-size:15px;color:var(--grp-slate);border-bottom:1px solid var(--grp-line);}
.grp-module li:last-child{border-bottom:none;}
.grp-module li i{color:#10b981;font-size:15px;}

/* ═══════════ 作用（深色） ═══════════ */
.grp-benefits{padding:108px 0;background:var(--grp-navy);overflow:hidden;}
.grp-benefits-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.grp-benefit{position:relative;padding:42px 32px;border-radius:20px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);text-align:center;transition:all .4s cubic-bezier(.16,1,.3,1);}
.grp-benefit:hover{transform:translateY(-8px);background:rgba(255,255,255,.09);border-color:rgba(165,180,252,.4);box-shadow:0 26px 50px rgba(10,17,38,.4);}
.grp-benefit-ico{display:inline-flex;align-items:center;justify-content:center;width:74px;height:74px;border-radius:20px;background:var(--grp-grad-soft);color:#a5b4fc;font-size:32px;margin-bottom:22px;transition:all .4s;}
.grp-benefit:hover .grp-benefit-ico{background:var(--grp-grad);color:#fff;transform:translateY(-3px) scale(1.05);}
.grp-benefit h3{margin:0 0 14px;font-size:20px;font-weight:700;color:#fff;}
.grp-benefit p{margin:0;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.6);}

/* ═══════════ 站群 ═══════════ */
.grp-station{padding:104px 0;background:var(--grp-bg);}
.grp-station-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.grp-station-title{font-size:clamp(28px,3.4vw,40px);font-weight:800;color:var(--grp-ink);margin:16px 0 0;line-height:1.25;}
.grp-station-desc{font-size:16px;line-height:1.85;color:var(--grp-slate);margin:18px 0 26px;max-width:480px;}
.grp-station-list{list-style:none;margin:0 0 32px;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:14px 26px;}
.grp-station-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--grp-ink);font-weight:500;}
.grp-station-list li i{color:#10b981;margin-top:4px;font-size:14px;flex-shrink:0;}
.grp-station-visual{display:flex;justify-content:center;}

/* ═══════════ AI + GEO 智能引擎 ═══════════ */
.grp-ai{padding:108px 0;background:var(--grp-navy);overflow:hidden;}
.grp-ai-engines{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-bottom:26px;}
.grp-ai-engine{position:relative;overflow:hidden;display:flex;gap:28px;align-items:flex-start;padding:42px 38px;border-radius:22px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(10px);transition:all .4s cubic-bezier(.16,1,.3,1);}
.grp-ai-engine::after{content:'';position:absolute;right:-60px;top:-60px;width:200px;height:200px;border-radius:50%;filter:blur(60px);opacity:.4;transition:opacity .4s;}
.grp-ai-engine-ai::after{background:radial-gradient(circle,#6366f1,transparent 70%);}
.grp-ai-engine-geo::after{background:radial-gradient(circle,#a855f7,transparent 70%);}
.grp-ai-engine:hover{transform:translateY(-8px);background:rgba(255,255,255,.09);border-color:rgba(165,180,252,.45);box-shadow:0 26px 50px rgba(10,17,38,.4);}
.grp-ai-engine:hover::after{opacity:.7;}
.grp-ai-engine-ico{flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;width:64px;height:64px;border-radius:18px;background:var(--grp-grad-soft);color:#a5b4fc;font-size:30px;transition:all .4s;}
.grp-ai-engine:hover .grp-ai-engine-ico{background:var(--grp-grad);color:#fff;transform:scale(1.06);}
.grp-ai-engine-body{flex:1;min-width:0;}
.grp-ai-engine h3{margin:0 0 14px;font-size:23px;font-weight:800;color:#fff;letter-spacing:-.3px;}
.grp-ai-engine p{margin:0 0 22px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);}
.grp-ai-engine-list{list-style:none;margin:0;padding:0;}
.grp-ai-engine-list li{display:flex;align-items:center;gap:11px;padding:9px 0;font-size:14.5px;color:rgba(255,255,255,.82);border-top:1px solid rgba(255,255,255,.08);}
.grp-ai-engine-list li:first-child{border-top:none;}
.grp-ai-engine-list i{color:#a5b4fc;font-size:13px;flex-shrink:0;}

.grp-ai-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.grp-ai-card{position:relative;display:flex;gap:18px;align-items:flex-start;padding:34px 28px;border-radius:20px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);transition:all .4s cubic-bezier(.16,1,.3,1);}
.grp-ai-card:hover{transform:translateY(-8px);background:rgba(255,255,255,.09);border-color:rgba(165,180,252,.4);box-shadow:0 26px 50px rgba(10,17,38,.4);}
.grp-ai-card-ico{flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;width:54px;height:54px;border-radius:15px;background:var(--grp-grad-soft);color:#a5b4fc;font-size:24px;transition:all .4s;}
.grp-ai-card:hover .grp-ai-card-ico{background:var(--grp-grad);color:#fff;transform:scale(1.06);}
.grp-ai-card-body{flex:1;min-width:0;}
.grp-ai-card h4{margin:0 0 10px;font-size:17px;font-weight:700;color:#fff;}
.grp-ai-card p{margin:0;font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.6);}

/* ═══════════ 为什么选择我们 ═══════════ */
.grp-why{padding:104px 0;background:#fff;}
.grp-why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;}
.grp-why{position:relative;padding:42px 28px;border-radius:20px;background:var(--grp-bg);border:1px solid var(--grp-line);text-align:center;transition:all .4s cubic-bezier(.16,1,.3,1);}
.grp-why:hover{transform:translateY(-8px);background:#fff;box-shadow:var(--grp-shadow-lg);border-color:transparent;}
.grp-why-ico{display:inline-flex;align-items:center;justify-content:center;width:70px;height:70px;border-radius:18px;background:var(--grp-grad);color:#fff;font-size:30px;margin-bottom:20px;box-shadow:0 14px 30px rgba(99,102,241,.3);transition:all .4s;}
.grp-why:hover .grp-why-ico{transform:scale(1.06) rotate(-4deg);}
.grp-why h3{margin:0 0 12px;font-size:18px;font-weight:700;color:var(--grp-ink);}
.grp-why p{margin:0;font-size:14px;line-height:1.75;color:var(--grp-slate);}

/* ═══════════ CTA ═══════════ */
.grp-cta{position:relative;overflow:hidden;padding:100px 0;background:radial-gradient(120% 120% at 20% 0%,#13204a 0%,#0a1126 45%,var(--grp-navy) 100%);}
.grp-cta-bg{position:absolute;inset:0;z-index:0;}
.grp-cta-inner{position:relative;z-index:2;text-align:center;}
.grp-cta-inner h2{font-size:clamp(28px,3.6vw,42px);font-weight:800;color:#fff;margin:0 0 14px;letter-spacing:-.5px;}
.grp-cta-inner p{font-size:17px;color:rgba(255,255,255,.66);margin:0 0 34px;}
.grp-cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

/* ═══════════ 响应式 ═══════════ */
@media (max-width:1080px){
    .grp-hero-inner{grid-template-columns:1fr;gap:48px;text-align:center;}
    .grp-hero-text{display:flex;flex-direction:column;align-items:center;}
    .grp-hero-sub{margin-left:auto;margin-right:auto;}
    .grp-hero-feats,.grp-hero-actions{justify-content:center;}
    .grp-intro-grid{grid-template-columns:1fr;gap:44px;}
    .grp-values-grid{grid-template-columns:repeat(2,1fr);}
    .grp-benefits-grid{grid-template-columns:repeat(2,1fr);}
    .grp-why-grid{grid-template-columns:repeat(2,1fr);}
    .grp-ai-engines{grid-template-columns:1fr;gap:22px;}
    .grp-ai-grid{grid-template-columns:repeat(2,1fr);}
    .grp-station-grid{grid-template-columns:1fr;gap:44px;}
    .grp-station-text{display:flex;flex-direction:column;align-items:center;text-align:center;}
    .grp-station-desc{margin-left:auto;margin-right:auto;}
    .grp-station-list{justify-items:center;}
}
@media (max-width:768px){
    .grp-hero{padding:120px 0 70px;min-height:auto;}
    .grp-intro,.grp-values,.grp-modules,.grp-benefits,.grp-station,.grp-why,.grp-cta{padding:64px 0;}
    .grp-head{margin-bottom:42px;}
    .grp-modules-grid{grid-template-columns:1fr;}
    .grp-benefits-grid{grid-template-columns:1fr;}
    .grp-values-grid{grid-template-columns:1fr;}
    .grp-why-grid{grid-template-columns:1fr;}
    .grp-ai-grid{grid-template-columns:1fr;}
    .grp-intro-stats{grid-template-columns:repeat(2,1fr);}
    .grp-station-list{grid-template-columns:1fr;}
    .grp-scroll-hint{display:none;}
}
@media (max-width:480px){
    .grp-hero-title{font-size:34px;}
    .grp-station-list{grid-template-columns:1fr;}
    .grp-cta-actions{flex-direction:column;align-items:center;}
    .grp-cta-actions .grp-btn{width:100%;max-width:300px;justify-content:center;}
    .grp-ai-engine{gap:18px;padding:28px 22px;}
    .grp-ai-engine-ico{width:52px;height:52px;font-size:24px;border-radius:14px;}
    .grp-ai-card{gap:14px;padding:24px 20px;}
    .grp-ai-card-ico{width:46px;height:46px;font-size:20px;border-radius:12px;}
}