/* ========================================
   杭州盾网科技 - 统一暗黑科技风格
   所有页面共享样式
   ======================================== */

/* 重置与基础 */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg-primary:#050a12;--bg-secondary:#0a1628;--bg-card:#0d1f35;--bg-card-hover:#112a45;
  --accent:#00d4ff;--accent-dim:#0088aa;--accent-glow:rgba(0,212,255,.12);
  --green:#22c55e;--red:#ef4444;--amber:#f59e0b;
  --text-primary:#e8edf5;--text-secondary:#8899b0;--text-muted:#4a5e78;
  --border:rgba(0,212,255,.1);--border-strong:rgba(0,212,255,.25);
  --radius:16px;--radius-lg:24px;--radius-sm:8px;
  --shadow-glow:0 0 40px rgba(0,212,255,.08);
  --font-body:'Noto Sans SC',system-ui,sans-serif;
  --font-mono:'JetBrains Mono',monospace;
  --max-w:1200px;--section-py:clamp(64px,8vw,120px);--section-px:clamp(16px,4vw,48px);
}

/* 滚动条 */
html{scroll-behavior:smooth;scrollbar-width:thin;scrollbar-color:var(--accent-dim) var(--bg-secondary)}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg-secondary)}
::-webkit-scrollbar-thumb{background:var(--accent-dim);border-radius:3px}

/* 基础排版 */
body{
  font-family:var(--font-body);background:var(--bg-primary);color:var(--text-primary);
  line-height:1.7;font-size:16px;overflow-x:hidden;-webkit-font-smoothing:antialiased;
}

/* 背景纹理 */
body::before{
  content:'';position:fixed;inset:0;z-index:9998;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity:.035;
}
body::after{
  content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(rgba(0,212,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,212,255,.03) 1px,transparent 1px);
  background-size:60px 60px;
}

/* 工具类 */
.container{max-width:var(--max-w);margin:0 auto;padding:0 var(--section-px)}
.section{padding:var(--section-py) 0;position:relative}
.section-label{
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--accent);margin-bottom:8px;display:flex;align-items:center;gap:10px;
}
.section-label::before{content:'';width:24px;height:1px;background:var(--accent)}
.section-title{
  font-size:clamp(1.8rem,4vw,2.8rem);font-weight:900;line-height:1.2;
  margin-bottom:16px;letter-spacing:-.02em;
}
.section-desc{color:var(--text-secondary);font-size:1.05rem;max-width:640px;line-height:1.8}

/* 扫描线动画 */
.section-scanline{
  position:absolute;top:0;left:0;right:0;height:1px;pointer-events:none;z-index:2;
  background:linear-gradient(90deg,transparent 10%,var(--accent) 50%,transparent 90%);
  opacity:.15;animation:scanDown 8s linear infinite;
}
@keyframes scanDown{0%{top:0}100%{top:100%}}

/* 滚动入场动画 */
.reveal{opacity:1;transform:none;transition:opacity .7s ease,transform .7s ease}
.js-on .reveal{opacity:0;transform:translateY(32px)}
.js-on .reveal.visible{opacity:1;transform:translateY(0)}
.reveal-d1{transition-delay:.1s}.reveal-d2{transition-delay:.2s}
.reveal-d3{transition-delay:.3s}.reveal-d4{transition-delay:.4s}

/* ========================================
   导航栏
   ======================================== */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(5,10,18,.82);backdrop-filter:blur(24px) saturate(1.5);
  -webkit-backdrop-filter:blur(24px) saturate(1.5);border-bottom:1px solid var(--border);
}
.navbar .nav-inner{
  max-width:var(--max-w);margin:0 auto;display:flex;align-items:center;
  justify-content:space-between;padding:0 var(--section-px);height:72px;
}
.nav-brand{display:flex;align-items:center;text-decoration:none}
.nav-brand img{height:46px;width:auto}
.nav-menu{display:flex;gap:4px;list-style:none}
.nav-menu a{
  text-decoration:none;color:var(--text-secondary);font-weight:500;font-size:.88rem;
  padding:8px 16px;border-radius:var(--radius-sm);transition:color .2s,background .2s;
}
.nav-menu a:hover{color:var(--text-primary);background:rgba(0,212,255,.06)}
.nav-menu a.nav-active{color:var(--accent);background:var(--accent-glow)}
.nav-toggle{display:none;color:var(--text-primary);font-size:1.4rem;cursor:pointer;background:none;border:none;padding:8px}
@media(max-width:860px){
  .nav-menu{
    position:fixed;top:72px;left:0;right:0;
    background:rgba(5,10,18,.97);backdrop-filter:blur(20px);
    flex-direction:column;padding:20px;border-bottom:1px solid var(--border);
    transform:translateY(-120%);transition:transform .3s;gap:4px;
  }
  .nav-menu.nav-open{transform:translateY(0)}
  .nav-menu a{padding:12px 16px;font-size:1rem}
  .nav-toggle{display:block}
}

/* ========================================
   页脚
   ======================================== */
.footer{
  background:var(--bg-secondary);border-top:1px solid var(--border);
  padding:48px 0 36px;text-align:center;position:relative;
}
.footer::before{
  content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:200px;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent),transparent);
}
.footer-inner{max-width:var(--max-w);margin:0 auto;padding:0 var(--section-px)}
.footer-brand{
  display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:20px;
}
.footer-brand span{font-weight:800;font-size:1rem;color:var(--text-primary)}
.footer-links{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;margin-bottom:28px}
.footer-links a{color:var(--text-muted);text-decoration:none;font-size:.82rem;transition:color .2s}
.footer-links a:hover{color:var(--accent)}
.footer-divider{
  width:60px;height:1px;margin:0 auto 24px;
  background:linear-gradient(90deg,transparent,var(--border-strong),transparent);
}
.footer-copy{font-size:.78rem;color:var(--text-muted);line-height:1.8;margin-bottom:14px}
.footer-icp{display:flex;align-items:center;justify-content:center;gap:0;flex-wrap:wrap}
.footer-icp a{
  display:inline-flex;align-items:center;gap:6px;
  color:#6b7280;text-decoration:none;font-size:.72rem;letter-spacing:.02em;
  padding:6px 14px;border-radius:6px;
  border:1px solid rgba(107,114,128,.12);background:rgba(107,114,128,.04);
  transition:color .25s,border-color .25s,background .25s;
}
.footer-icp a i{font-size:.6rem;color:#6b7280;opacity:.5;transition:opacity .25s}
.footer-icp a:hover{
  color:#9ca3af;border-color:rgba(107,114,128,.25);background:rgba(107,114,128,.08);
}
.footer-icp a:hover i{opacity:.7}
.footer-icp .icp-sep{
  width:1px;height:12px;background:rgba(107,114,128,.2);margin:0 6px;flex-shrink:0;
}
@media(max-width:500px){
  .footer-icp{flex-direction:column;gap:8px}
  .footer-icp .icp-sep{display:none}
}

/* ========================================
   顶部进度条
   ======================================== */
#topProgress{
  position:fixed;top:0;left:0;height:2px;z-index:10001;
  background:linear-gradient(90deg,var(--accent),var(--accent-dim));width:0;transition:width .15s;
}

/* ========================================
   方案页面 - Hero 区域
   ======================================== */
.sol-hero{
  min-height:50vh;display:flex;align-items:center;position:relative;overflow:hidden;
  padding-top:72px;
}
.sol-hero-bg{
  position:absolute;inset:0;z-index:0;
  background-size:cover;background-position:center;
  background-repeat:no-repeat;
}
.sol-hero-bg::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,18,.7) 0%,rgba(5,10,18,.9) 100%);
}
.sol-hero-content{
  position:relative;z-index:2;max-width:var(--max-w);margin:0 auto;
  padding:0 var(--section-px);text-align:center;
}
.sol-hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent-glow);border:1px solid var(--border-strong);
  padding:6px 16px;border-radius:40px;font-size:.78rem;
  font-family:var(--font-mono);color:var(--accent);margin-bottom:20px;letter-spacing:.05em;
}
.sol-hero-badge .pulse{
  width:8px;height:8px;background:var(--accent);border-radius:50%;animation:mpulse 2s infinite;
}
@keyframes mpulse{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(0,212,255,.4)}
  50%{opacity:.7;box-shadow:0 0 0 8px rgba(0,212,255,0)}
}
.sol-hero-title{
  font-size:clamp(2rem,5vw,3.5rem);font-weight:900;line-height:1.2;
  margin-bottom:16px;letter-spacing:-.03em;
}
.sol-hero-title .hl{color:var(--accent);position:relative;display:inline-block}
.sol-hero-title .hl::after{
  content:'';position:absolute;bottom:2px;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--accent),transparent);border-radius:2px;
}
.sol-hero-subtitle{font-size:1.1rem;color:var(--text-secondary);line-height:1.8;max-width:700px;margin:0 auto}

/* ========================================
   方案页面 - 内容区域
   ======================================== */
.sol-content{padding:var(--section-py) 0}
.sol-content .container{max-width:900px}
.sol-content .content-block{
  margin-bottom:48px;
}
.sol-content .content-block h2{
  font-size:1.5rem;font-weight:700;margin-bottom:16px;color:var(--text-primary);
  padding-bottom:12px;border-bottom:1px solid var(--border);
}
.sol-content .content-block p{
  color:var(--text-secondary);font-size:1rem;line-height:1.9;margin-bottom:16px;
}
.sol-content .content-block img{
  width:100%;height:auto;border-radius:var(--radius);border:1px solid var(--border);
  margin:16px 0;transition:transform .3s,box-shadow .3s;
}
.sol-content .content-block img:hover{
  transform:scale(1.02);box-shadow:0 0 30px rgba(0,212,255,.15);
}

/* ========================================
   方案页面 - 导航面包屑
   ======================================== */
.breadcrumb-bar{
  padding:100px 0 0;text-align:center;
}
.breadcrumb-bar .breadcrumb{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.78rem;color:var(--text-muted);
}
.breadcrumb-bar .breadcrumb a{
  color:var(--accent);text-decoration:none;transition:color .2s;
}
.breadcrumb-bar .breadcrumb a:hover{color:var(--text-primary)}
.breadcrumb-bar .breadcrumb .sep{color:var(--text-muted);opacity:.5}

/* ========================================
   CTA 区域
   ======================================== */
.cta-section{
  padding:var(--section-py) 0;background:var(--bg-secondary);
}
.cta-section .cta-inner{
  max-width:800px;margin:0 auto;text-align:center;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:60px 40px;position:relative;overflow:hidden;
}
.cta-section .cta-inner::before{
  content:'';position:absolute;inset:-1px;border-radius:var(--radius-lg);z-index:-1;
  background:conic-gradient(from 0deg,transparent,var(--accent),transparent,var(--accent),transparent);
  opacity:.1;filter:blur(10px);
}
.cta-section .cta-inner h2{
  font-size:clamp(1.5rem,3vw,2.2rem);font-weight:900;margin-bottom:16px;
}
.cta-section .cta-inner p{
  color:var(--text-secondary);font-size:1rem;line-height:1.8;margin-bottom:32px;
}
.cta-section .cta-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 32px;border-radius:40px;font-weight:700;font-size:.95rem;
  text-decoration:none;color:var(--bg-primary);background:var(--accent);
  border:none;cursor:pointer;transition:all .3s;
}
.cta-section .cta-btn:hover{
  background:var(--text-primary);box-shadow:0 0 30px rgba(0,212,255,.3);
  transform:translateY(-2px);
}

/* ========================================
   关于我们
   ======================================== */
.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:64px;align-items:center}
.about-text-block p{color:var(--text-secondary);margin-bottom:16px;font-size:.98rem;line-height:1.85}
.about-text-block p:first-child{font-size:1.05rem;color:var(--text-primary)}
.about-features{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px}
.about-feat{
  display:flex;align-items:flex-start;gap:12px;padding:16px;
  background:var(--bg-card);border-radius:var(--radius);border:1px solid var(--border);
  transition:border-color .3s,box-shadow .3s;
}
.about-feat:hover{border-color:var(--border-strong);box-shadow:0 0 20px rgba(0,212,255,.06)}
.about-feat i{color:var(--accent);font-size:1.1rem;margin-top:2px;flex-shrink:0}
.about-feat-text{font-size:.88rem;line-height:1.6}
.about-feat-text strong{display:block;color:var(--text-primary);margin-bottom:2px}
.about-img-wrap{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);aspect-ratio:4/3}
.about-img-wrap img{width:100%;height:100%;object-fit:cover;display:block}
.about-img-wrap::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,212,255,.08),transparent 60%)}
.about-img-badge{
  position:absolute;bottom:20px;left:20px;
  background:rgba(5,10,18,.85);backdrop-filter:blur(12px);
  border:1px solid var(--border-strong);padding:12px 20px;border-radius:var(--radius);
  font-family:var(--font-mono);font-size:.82rem;color:var(--accent);
}
@media(max-width:800px){.about-grid{grid-template-columns:1fr;gap:32px}.about-features{grid-template-columns:1fr}}

/* ========================================
   服务
   ======================================== */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.service-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:32px 28px;position:relative;overflow:hidden;transition:border-color .3s,transform .3s,box-shadow .3s;
}
.service-card:hover{
  border-color:var(--accent);transform:translateY(-4px);
  box-shadow:0 0 30px rgba(0,212,255,.1),0 20px 40px rgba(0,0,0,.3);
}
.service-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--accent),transparent);opacity:0;transition:opacity .3s;
}
.service-card:hover::before{opacity:1}
.service-card::after{
  content:'';position:absolute;inset:-1px;border-radius:var(--radius-lg);z-index:-1;
  background:conic-gradient(from 0deg,transparent,var(--accent),transparent,var(--accent),transparent);
  opacity:0;transition:opacity .4s;filter:blur(6px);
}
.service-card:hover::after{opacity:.3}
.service-card .sc-icon{
  width:56px;height:56px;border-radius:16px;background:var(--accent-glow);
  border:1px solid var(--border-strong);display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.service-card .sc-icon img{width:30px;height:30px}
.service-card h3{font-size:1.15rem;font-weight:700;margin-bottom:10px}
.service-card p{font-size:.88rem;color:var(--text-secondary);line-height:1.7}
.service-card .sc-num{
  position:absolute;top:20px;right:24px;
  font-family:var(--font-mono);font-size:.7rem;color:var(--text-muted);letter-spacing:.1em;
}
@media(max-width:900px){.services-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.services-grid{grid-template-columns:1fr}}

/* ========================================
   项目案例
   ======================================== */
.projects-tabs{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-bottom:40px}
.proj-tab{
  padding:8px 24px;border-radius:40px;font-size:.85rem;font-weight:600;
  border:1px solid var(--border);color:var(--text-secondary);background:transparent;cursor:default;
}
.proj-tab.proj-active{background:var(--accent);color:var(--bg-primary);border-color:var(--accent)}
.projects-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.proj-card{
  border-radius:var(--radius);overflow:hidden;position:relative;aspect-ratio:4/3;
  border:1px solid var(--border);transition:border-color .3s;
}
.proj-card:hover{border-color:var(--border-strong)}
.proj-card img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s}
.proj-card:hover img{transform:scale(1.05)}
.proj-card-overlay{
  position:absolute;bottom:0;left:0;right:0;
  background:linear-gradient(to top,rgba(5,10,18,.92),transparent);padding:20px 16px 16px;
}
.proj-card-overlay h4{font-size:.9rem;font-weight:600}
.proj-card-overlay .proj-cat{font-family:var(--font-mono);font-size:.68rem;color:var(--accent);margin-top:4px;letter-spacing:.05em}
@media(max-width:900px){.projects-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:500px){.projects-grid{grid-template-columns:1fr}}

/* ========================================
   解决方案卡片
   ======================================== */
.solutions-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.sol-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;transition:border-color .3s,transform .3s,box-shadow .3s;
  text-decoration:none;color:inherit;display:block;
}
.sol-card:hover{
  border-color:var(--accent);transform:translateY(-4px);box-shadow:0 0 30px rgba(0,212,255,.1);
}
.sol-card-img{height:180px;overflow:hidden}
.sol-card-img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s}
.sol-card:hover .sol-card-img img{transform:scale(1.06)}
.sol-card-body{padding:24px 20px}
.sol-card-body h3{font-size:1.05rem;font-weight:700;margin-bottom:8px;color:var(--text-primary)}
.sol-card-body .sol-link{
  font-family:var(--font-mono);font-size:.78rem;color:var(--accent);
  letter-spacing:.05em;display:flex;align-items:center;gap:6px;margin-top:12px;
}
.sol-card-body .sol-link i{font-size:.65rem;transition:transform .2s}
.sol-card:hover .sol-card-body .sol-link i{transform:translateX(4px)}
@media(max-width:900px){.solutions-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:500px){.solutions-grid{grid-template-columns:1fr}}

/* ========================================
   合作伙伴
   ======================================== */
.partners-wrap{display:flex;flex-wrap:wrap;justify-content:center;gap:24px;align-items:center;margin-top:40px}
.partner-item{
  display:flex;align-items:center;justify-content:center;
  width:150px;height:72px;background:rgba(255,255,255,.95);
  border:1px solid var(--border);border-radius:var(--radius);
  padding:14px 22px;transition:border-color .3s,box-shadow .3s,transform .3s;
}
.partner-item:hover{
  border-color:var(--border-strong);transform:translateY(-3px);
  box-shadow:0 8px 24px rgba(0,212,255,.1);
}
.partner-item img{max-height:40px;max-width:100%;object-fit:contain}

/* ========================================
   联系我们
   ======================================== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-map{
  height:360px;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--border);background:var(--bg-card);
}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:24px}
.contact-item{
  display:flex;gap:18px;align-items:flex-start;padding:20px;
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
  transition:border-color .3s;user-select:text;
}
.contact-item:hover{border-color:var(--border-strong)}
.contact-item .ci-icon{
  width:48px;height:48px;flex-shrink:0;background:var(--accent-glow);
  border:1px solid var(--border-strong);border-radius:14px;
  display:flex;align-items:center;justify-content:center;
}
.contact-item .ci-icon i{color:var(--accent);font-size:1.1rem}
.contact-item .ci-text{font-size:.92rem;line-height:1.6}
.contact-item .ci-text strong{
  display:block;color:var(--text-primary);margin-bottom:2px;
  font-size:.82rem;font-family:var(--font-mono);letter-spacing:.05em;
}
.contact-item .ci-text span{color:var(--text-secondary)}
.contact-hours{
  margin-top:20px;padding:16px 20px;background:var(--bg-card);
  border:1px solid var(--border);border-radius:var(--radius);
  display:flex;align-items:center;gap:12px;font-size:.9rem;color:var(--text-secondary);
}
.contact-hours i{color:var(--accent)}
@media(max-width:800px){.contact-grid{grid-template-columns:1fr}}

/* ========================================
   安全提示横幅
   ======================================== */
.security-banner{
  position:fixed;bottom:20px;right:20px;z-index:9999;
  background:rgba(5,10,18,.9);backdrop-filter:blur(12px);
  border:1px solid var(--border-strong);border-radius:var(--radius);
  padding:12px 20px;display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:.75rem;color:var(--accent);
  transform:translateY(120%);transition:transform .5s;cursor:pointer;
}
.security-banner.show{transform:translateY(0)}
.security-banner i{font-size:1rem}

/* ========================================
   图片网格（方案页面内容）
   ======================================== */
.img-grid{display:grid;gap:16px;margin:24px 0}
.img-grid.grid-2{grid-template-columns:repeat(2,1fr)}
.img-grid.grid-1{grid-template-columns:1fr}
.img-grid img{
  width:100%;height:auto;border-radius:var(--radius);border:1px solid var(--border);
  transition:transform .3s,box-shadow .3s;
}
.img-grid img:hover{
  transform:scale(1.02);box-shadow:0 0 30px rgba(0,212,255,.15);
}

/* ========================================
   特性卡片（方案页面）
   ======================================== */
.feature-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:40px 0}
.feature-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 24px;text-align:center;transition:border-color .3s,transform .3s;
}
.feature-card:hover{
  border-color:var(--accent);transform:translateY(-4px);
  box-shadow:0 0 30px rgba(0,212,255,.1);
}
.feature-card i{font-size:2rem;color:var(--accent);margin-bottom:16px;display:block}
.feature-card h4{font-size:1rem;font-weight:700;margin-bottom:8px}
.feature-card p{font-size:.85rem;color:var(--text-secondary);line-height:1.7}
@media(max-width:768px){.feature-cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:500px){.feature-cards{grid-template-columns:1fr}}