/* GEO优化平台 - 官网页面样式 V2 */

/* ===== Reset & Base ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#0b1120;--bg2:#111827;--bg3:#1a2332;--bg4:#0f1729;
  --t1:#f0f4f8;--t2:#94a3b8;--t3:#64748b;--ta:#5eead4;
  --ac:#14b8a6;--ac-l:#2dd4bf;--ac-d:#0d9488;
  --ac-g:rgba(20,184,166,.15);--ac-gs:rgba(20,184,166,.3);
  --bd:rgba(148,163,184,.1);--bda:rgba(20,184,166,.3);
  --ga:linear-gradient(135deg,#14b8a6,#06b6d4);
  --gs:linear-gradient(135deg,rgba(20,184,166,.1),rgba(6,182,212,.05));
  --gh:radial-gradient(ellipse at 50% 0%,rgba(20,184,166,.12) 0%,transparent 60%);
  --r-s:.5rem;--r-m:.75rem;--r-l:1rem;--r-xl:1.25rem;
  --py:5.5rem;--px:1.5rem;--mx:1200px;
  --ff:-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Segoe UI',sans-serif;
}
html{scroll-behavior:smooth;font-size:16px}
body{background:var(--bg);color:var(--t1);font-family:var(--ff);-webkit-font-smoothing:antialiased;line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
.container{max-width:var(--mx);margin:0 auto;padding:0 var(--px)}
.section{padding:var(--py) 0;position:relative}

/* ===== Section Header ===== */
.s-label{display:inline-flex;align-items:center;gap:.5rem;font-size:.78rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ac-l);margin-bottom:.8rem}
.s-label::before{content:'';display:inline-block;width:2rem;height:2px;background:var(--ga);border-radius:1px}
.s-label.center{justify-content:center}
.s-label.center::after{content:'';display:inline-block;width:2rem;height:2px;background:var(--ga);border-radius:1px}
.s-title{font-size:2.1rem;font-weight:700;line-height:1.2;letter-spacing:-.02em;margin-bottom:.8rem}
.s-desc{font-size:1.05rem;color:var(--t2);max-width:620px;line-height:1.7}
.center{text-align:center}.mx-auto{margin-left:auto;margin-right:auto}

/* ===== Navbar ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:1rem 0;transition:all .3s;background:transparent}
.nav.scrolled{background:rgba(11,17,32,.88);backdrop-filter:blur(16px);border-bottom:1px solid var(--bd);padding:.7rem 0}
.nav .container{display:flex;align-items:center;justify-content:space-between}
.nav-brand{display:flex;align-items:center;gap:.55rem;font-size:1.2rem;font-weight:700}
.brand-ico{width:34px;height:34px;border-radius:var(--r-s);background:var(--ga);display:flex;align-items:center;justify-content:center;font-size:1rem;color:#fff;font-weight:800}
.nav-links{display:flex;align-items:center;gap:1.8rem;list-style:none}
.nav-links a{font-size:.88rem;color:var(--t2);transition:color .2s;font-weight:500}
.nav-links a:hover{color:var(--ac-l)}
.nav-cta{font-size:.85rem;font-weight:600;padding:.5rem 1.3rem;background:var(--ga);color:#fff;border-radius:var(--r-s);border:none;cursor:pointer;transition:opacity .2s,transform .2s}
.nav-cta:hover{opacity:.9;transform:translateY(-1px)}
.mob-toggle{display:none;background:none;border:none;color:var(--t1);font-size:1.5rem;cursor:pointer}

/* ===== Hero ===== */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;padding-top:5rem;overflow:hidden}
.hero::before{content:'';position:absolute;top:-20%;left:50%;transform:translateX(-50%);width:120%;height:80%;background:var(--gh);pointer-events:none}
.hero-content{text-align:center;position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.4rem 1rem;background:var(--ac-g);border:1px solid var(--bda);border-radius:9999px;font-size:.78rem;font-weight:500;color:var(--ac-l);margin-bottom:2rem}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--ac);animation:pd 2s ease-in-out infinite}
@keyframes pd{0%,100%{opacity:1}50%{opacity:.4}}
.hero-title{font-size:3.2rem;font-weight:800;line-height:1.1;letter-spacing:-.03em;margin-bottom:1.5rem;max-width:700px;margin-left:auto;margin-right:auto}
.hero-title .hl{background:var(--ga);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:1.15rem;color:var(--t2);max-width:540px;margin:0 auto 2.5rem;line-height:1.7}
.hero-acts{display:flex;align-items:center;justify-content:center;gap:1rem;flex-wrap:wrap}
.btn-p{display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.8rem;background:var(--ga);color:#fff;font-size:.95rem;font-weight:600;border-radius:var(--r-m);border:none;cursor:pointer;transition:opacity .2s,transform .2s,box-shadow .2s;box-shadow:0 4px 20px rgba(20,184,166,.3)}
.btn-p:hover{opacity:.9;transform:translateY(-2px);box-shadow:0 8px 30px rgba(20,184,166,.4)}
.btn-s{display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.8rem;background:transparent;color:var(--t1);font-size:.95rem;font-weight:500;border-radius:var(--r-m);border:1px solid var(--bd);cursor:pointer;transition:all .2s}
.btn-s:hover{border-color:var(--ac);background:var(--ac-g)}
.hero-stats{display:flex;align-items:center;justify-content:center;gap:3rem;margin-top:3.5rem;padding-top:2.5rem;border-top:1px solid var(--bd)}
.hero-stat{text-align:center}
.hero-sv{font-size:2.4rem;font-weight:800;background:var(--ga);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.2}
.hero-sl{font-size:.82rem;color:var(--t3);margin-top:.2rem}

/* ===== Insight Cards (市场洞察) ===== */
.insight-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:2.5rem}
.insight-card{padding:2rem;border-radius:var(--r-l);background:var(--bg3);border:1px solid var(--bd);transition:border-color .3s}
.insight-card:hover{border-color:rgba(239,68,68,.3)}
.insight-num{font-size:2.5rem;font-weight:800;color:rgba(239,68,68,.5);line-height:1;margin-bottom:.75rem}
.insight-title{font-size:1.1rem;font-weight:600;margin-bottom:.6rem}
.insight-desc{font-size:.88rem;color:var(--t2);line-height:1.65}
.insight-desc li{margin-bottom:.3rem;list-style:none;padding-left:1rem;position:relative}
.insight-desc li::before{content:'';position:absolute;left:0;top:.55rem;width:4px;height:4px;border-radius:50%;background:rgba(239,68,68,.5)}

/* ===== GEO vs SEO ===== */
.vs-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin-top:2.5rem}
.vs-card{padding:2rem;border-radius:var(--r-l);border:1px solid var(--bd)}
.vs-card.seo{background:var(--bg3);opacity:.85}
.vs-card.geo{background:var(--bg3);border-color:var(--bda);box-shadow:0 0 40px rgba(20,184,166,.08)}
.vs-card.geo::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--ga);border-radius:var(--r-l) var(--r-l) 0 0}
.vs-tag{display:inline-block;font-size:.75rem;font-weight:600;padding:.25rem .75rem;border-radius:9999px;margin-bottom:1rem}
.vs-card.seo .vs-tag{background:rgba(148,163,184,.15);color:var(--t2)}
.vs-card.geo .vs-tag{background:var(--ac-g);color:var(--ac-l)}
.vs-item{display:flex;align-items:flex-start;gap:.6rem;padding:.6rem 0;font-size:.9rem;color:var(--t2);line-height:1.55}
.vs-item:not(:last-child){border-bottom:1px solid var(--bd)}
.vs-item-icon{flex-shrink:0;width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.7rem;margin-top:2px}
.vs-card.seo .vs-item-icon{background:rgba(148,163,184,.15);color:var(--t2)}
.vs-card.geo .vs-item-icon{background:var(--ac-g);color:var(--ac-l)}

/* ===== Core Value (3 pillars) ===== */
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:2.5rem}
.value-card{padding:2rem;border-radius:var(--r-l);background:var(--bg3);border:1px solid var(--bd);text-align:center;transition:border-color .3s,transform .3s}
.value-card:hover{border-color:var(--bda);transform:translateY(-4px)}
.value-ico{width:52px;height:52px;border-radius:var(--r-m);background:var(--gs);border:1px solid var(--bda);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin:0 auto 1rem}
.value-title{font-size:1.1rem;font-weight:600;margin-bottom:.5rem}
.value-desc{font-size:.88rem;color:var(--t2);line-height:1.6}

/* ===== Features ===== */
.feat-section{background:var(--bg2)}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:2.5rem}
.feat-card{padding:1.8rem;border-radius:var(--r-l);background:var(--bg3);border:1px solid var(--bd);transition:border-color .3s,transform .3s;position:relative;overflow:hidden}
.feat-card:hover{border-color:var(--bda);transform:translateY(-4px)}
.feat-card::after{content:'';position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--ga);opacity:0;transition:opacity .3s}
.feat-card:hover::after{opacity:1}
.feat-ico{width:42px;height:42px;border-radius:var(--r-m);background:var(--gs);border:1px solid var(--bda);display:flex;align-items:center;justify-content:center;font-size:1.15rem;margin-bottom:1rem}
.feat-title{font-size:1.05rem;font-weight:600;margin-bottom:.4rem}
.feat-desc{font-size:.85rem;color:var(--t2);line-height:1.6;margin-bottom:.8rem}
.feat-tags{display:flex;flex-wrap:wrap;gap:.4rem}
.feat-tag{font-size:.72rem;padding:.2rem .55rem;border-radius:9999px;background:var(--ac-g);color:var(--ac-l);border:1px solid rgba(20,184,166,.2)}

/* ===== Scenarios ===== */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:2.5rem}
.scene-card{padding:2rem;border-radius:var(--r-l);background:var(--bg3);border:1px solid var(--bd);transition:border-color .3s}
.scene-card:hover{border-color:var(--bda)}
.scene-emoji{font-size:1.8rem;margin-bottom:.8rem}
.scene-title{font-size:1.05rem;font-weight:600;margin-bottom:.8rem}
.scene-pain{font-size:.82rem;color:var(--t3);margin-bottom:1rem;line-height:1.5;padding:.6rem .8rem;background:rgba(239,68,68,.06);border-radius:var(--r-s);border-left:3px solid rgba(239,68,68,.3)}
.scene-benefits{display:flex;flex-direction:column;gap:.5rem}
.scene-benefit{display:flex;align-items:flex-start;gap:.4rem;font-size:.85rem;color:var(--t2);line-height:1.5}
.scene-benefit::before{content:'✓';flex-shrink:0;color:var(--ac-l);font-weight:700;margin-top:1px}

/* ===== Pricing ===== */
.price-section{background:var(--bg2)}
.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin-top:2.5rem}
.price-card{padding:2.5rem;border-radius:var(--r-xl);background:var(--bg3);border:1px solid var(--bd);position:relative;overflow:hidden;transition:border-color .3s}
.price-card.pop{border-color:var(--bda);box-shadow:0 0 50px rgba(20,184,166,.1)}
.price-card.pop::before{content:'推荐';position:absolute;top:1.2rem;right:-2rem;background:var(--ga);color:#fff;font-size:.72rem;font-weight:600;padding:.3rem 2.5rem;transform:rotate(45deg)}
.price-tag{font-size:.78rem;font-weight:600;padding:.3rem .8rem;border-radius:9999px;margin-bottom:1rem;display:inline-block}
.price-card:not(.pop) .price-tag{background:rgba(148,163,184,.15);color:var(--t2)}
.price-card.pop .price-tag{background:var(--ac-g);color:var(--ac-l)}
.price-name{font-size:1.3rem;font-weight:700;margin-bottom:.3rem}
.price-sub{font-size:.85rem;color:var(--t3);margin-bottom:1.5rem}
.price-amount{display:flex;align-items:baseline;gap:.3rem;margin-bottom:2rem}
.price-currency{font-size:1.2rem;font-weight:600;color:var(--t2)}
.price-value{font-size:3rem;font-weight:800;background:var(--ga);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.price-period{font-size:.9rem;color:var(--t3)}
.price-features{display:flex;flex-direction:column;gap:.6rem;margin-bottom:2rem;padding-top:1.5rem;border-top:1px solid var(--bd)}
.price-feat{display:flex;align-items:flex-start;gap:.5rem;font-size:.88rem;color:var(--t2);line-height:1.5}
.price-feat::before{content:'✓';flex-shrink:0;color:var(--ac-l);font-weight:700;margin-top:1px}
.price-feat.highlight{color:var(--ac-l);font-weight:500}

/* ===== Agent Policy ===== */
.agent-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:2.5rem}
.agent-card{padding:2rem;border-radius:var(--r-l);background:var(--bg3);border:1px solid var(--bd);transition:border-color .3s}
.agent-card:hover{border-color:var(--bda)}
.agent-card-ico{width:44px;height:44px;border-radius:var(--r-m);background:var(--gs);border:1px solid var(--bda);display:flex;align-items:center;justify-content:center;font-size:1.2rem;margin-bottom:1rem}
.agent-card-title{font-size:1.05rem;font-weight:600;margin-bottom:.4rem}
.agent-card-desc{font-size:.85rem;color:var(--t2);line-height:1.6}

/* ===== Comparison Table ===== */
.cmp-table{width:100%;border-collapse:collapse;margin-top:2.5rem;background:var(--bg3);border-radius:var(--r-l);overflow:hidden;border:1px solid var(--bd)}
.cmp-table th,.cmp-table td{padding:1rem 1.5rem;text-align:left;font-size:.88rem;border-bottom:1px solid var(--bd)}
.cmp-table th{background:var(--bg4);color:var(--t2);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}
.cmp-table td:first-child{color:var(--t2);font-weight:500}
.cmp-table td:not(:first-child){text-align:center}
.cmp-table tr:last-child td,.cmp-table tr:last-child th{border-bottom:none}
.cmp-yes{color:var(--ac-l);font-weight:600}
.cmp-no{color:var(--t3)}

/* ===== Steps ===== */
.steps-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;margin-top:2.5rem;position:relative}
.steps-row::before{content:'';position:absolute;top:32px;left:calc(12.5% + 1rem);right:calc(12.5% + 1rem);height:2px;background:linear-gradient(90deg,var(--ac),rgba(6,182,212,.3))}
.step-card{text-align:center;position:relative}
.step-num{width:64px;height:64px;border-radius:50%;border:2px solid var(--bda);display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:800;color:var(--ac-l);margin:0 auto 1rem;position:relative;z-index:1;background:var(--bg)}
.step-title{font-size:1rem;font-weight:600;margin-bottom:.4rem}
.step-desc{font-size:.85rem;color:var(--t2);line-height:1.55}

/* ===== FAQ ===== */
.faq-list{max-width:720px;margin:2.5rem auto 0}
.faq-item{border-bottom:1px solid var(--bd)}
.faq-q{width:100%;padding:1.2rem 0;background:none;border:none;color:var(--t1);font-size:.95rem;font-weight:500;text-align:left;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:1rem;font-family:var(--ff)}
.faq-q:hover{color:var(--ac-l)}
.faq-icon{flex-shrink:0;width:24px;height:24px;border-radius:50%;background:var(--ac-g);display:flex;align-items:center;justify-content:center;font-size:.85rem;color:var(--ac-l);transition:transform .3s}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease}
.faq-item.open .faq-a{max-height:400px;padding-bottom:1.2rem}
.faq-a p{font-size:.88rem;color:var(--t2);line-height:1.7}

/* ===== CTA ===== */
.cta-box{text-align:center;padding:4rem 2rem;border-radius:var(--r-xl);background:var(--bg3);border:1px solid var(--bda);position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:80%;height:200px;background:radial-gradient(ellipse,rgba(20,184,166,.1) 0%,transparent 70%);pointer-events:none}
.cta-title{font-size:2rem;font-weight:700;margin-bottom:.8rem;position:relative}
.cta-desc{font-size:1.05rem;color:var(--t2);margin-bottom:2rem;position:relative}
.contact-row{display:flex;align-items:center;justify-content:center;gap:2rem;flex-wrap:wrap;position:relative}
.contact-item{display:flex;align-items:center;gap:.5rem;padding:.7rem 1.4rem;background:var(--bg);border:1px solid var(--bd);border-radius:var(--r-m);font-size:.92rem;color:var(--t2)}
.contact-item span:first-child{color:var(--ac-l);font-weight:600}

/* ===== Footer ===== */
.footer{padding:2.5rem 0;border-top:1px solid var(--bd)}
.footer .container{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem}
.footer-brand{display:flex;align-items:center;gap:.5rem;font-weight:600;color:var(--t2)}
.footer-copy{font-size:.82rem;color:var(--t3)}
.footer-links{display:flex;gap:1.5rem;list-style:none}
.footer-links a{font-size:.82rem;color:var(--t3);transition:color .2s}
.footer-links a:hover{color:var(--ac-l)}

/* ===== Animations ===== */
@keyframes fu{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.afu{animation:fu .6s ease-out both}
.d1{animation-delay:.1s}.d2{animation-delay:.2s}.d3{animation-delay:.3s}.d4{animation-delay:.4s}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .hero-title{font-size:2.6rem}
  .s-title{font-size:1.8rem}
  .vs-grid{grid-template-columns:1fr}
  .steps-row{grid-template-columns:repeat(2,1fr)}
  .steps-row::before{display:none}
  .price-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  :root{--py:3.5rem}
  .nav-links{display:none}
  .mob-toggle{display:block}
  .hero-title{font-size:1.9rem}
  .hero-sub{font-size:.95rem}
  .hero-stats{flex-direction:column;gap:1.2rem}
  .insight-grid,.vs-grid,.value-grid,.feat-grid,.scene-grid,.agent-grid{grid-template-columns:1fr}
  .steps-row{grid-template-columns:1fr;max-width:400px;margin-left:auto;margin-right:auto}
  .price-grid{grid-template-columns:1fr}
  .s-title{font-size:1.5rem}
  .cmp-table{font-size:.78rem}
  .cmp-table th,.cmp-table td{padding:.7rem .8rem}
}