/*
Theme Name: 点一点GEO
Theme URI: https://www.szdyd.cn
Author: 点一点科技
Author URI: https://www.szdyd.cn
Description: 点一点GEO - 生成式引擎优化(GEO)服务网站主题。支持后台管理案例和新闻，自定义联系信息。
Version: 1.4.6
Text Domain: diandian-geo
License: GPL v2 or later
*/

:root{
  --primary:#3670a3;
  --primary-deep:#2c5d8c;
  --accent:#c4490a;
  --accent-deep:#a83d06;
  --accent2:#7fa9cc;
  --ink:#24384a;
  --text:#4a5a6a;
  --muted:#5f7183;
  --bg:#f4f8fc;
  --card:#ffffff;
  --line:#e2eaf3;
  --radius:16px;
  --shadow:0 8px 30px rgba(60,90,120,.08);
  --grad:linear-gradient(135deg,#3670a3 0%,#2c5d8c 100%);
  --grad-orange:linear-gradient(135deg,#c4490a 0%,#a83d06 100%);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
/* 字体均为免费可商用字体（HarmonyOS Sans/ MiSans / 阿里巴巴普惠体 / 思源黑体 / PingFang），不内嵌任何需授权字体文件 */
body{font-family:"HarmonyOS Sans SC","MiSans","Alibaba PuHuiTi 3.0","Source Han Sans SC","Noto Sans SC","PingFang SC","Helvetica Neue",Arial,sans-serif;font-size:16px;color:var(--text);background:#fff;line-height:1.7;overflow-x:hidden}
img{max-width:100%}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{width:min(1200px,92%);margin:0 auto}
.section{padding:90px 0}
.section-head{text-align:center;margin-bottom:56px}
.section-tag{display:inline-block;font-size:14px;letter-spacing:2px;color:var(--primary);background:rgba(77,138,195,.08);border:1px solid rgba(77,138,195,.18);padding:4px 16px;border-radius:999px;margin-bottom:14px}
.section-head h2{font-size:38px;color:var(--ink);font-weight:700;letter-spacing:1px}
.section-head p{color:var(--muted);margin-top:12px;font-size:17px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 34px;border-radius:999px;font-size:16px;cursor:pointer;border:none;transition:.25s}
.btn-primary{background:var(--grad-orange);color:#fff;box-shadow:0 10px 26px rgba(196,73,10,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(196,73,10,.45)}
.btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--line)}
.btn-ghost:hover{background:#f0f6fc;border-color:var(--primary)}
.btn-outline{background:#fff;color:var(--primary);border:1.5px solid var(--primary)}
.btn-outline:hover{background:var(--accent);border-color:var(--accent);color:#fff}

/* ===== 顶部导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:.3s}
.nav-inner{display:flex;align-items:center;height:78px;gap:36px}
.logo{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:800;color:var(--ink)}
.logo .mark{width:34px;height:34px;border-radius:9px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:15px;font-weight:900}
.logo .logo-img{height:48px;width:auto;display:block;border-radius:6px}
footer .logo .logo-img{height:40px}
.logo em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:auto}
.nav-links a,.nav-item>a{font-size:17px;font-weight:500;color:var(--text);position:relative;padding:8px 0;white-space:nowrap}
@media (max-width:1360px){
  .nav-links{gap:16px}
  .nav-links a,.nav-item>a{font-size:16px}
  .nav-inner{gap:20px}
}
.nav-links a:hover,.nav-links a.active,.nav-item>a:hover{color:var(--primary);font-weight:600}
.nav-links a.active::after,.nav-item>a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:3px;border-radius:3px;background:var(--grad)}
.nav-item{position:relative}
.has-dropdown>a{cursor:default}
.dropdown{position:absolute;top:120%;left:50%;transform:translateX(-50%);background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);min-width:170px;padding:10px 0;opacity:0;visibility:hidden;transition:.25s;z-index:101}
.dropdown a{display:block;padding:11px 22px;font-size:15px;color:var(--text);white-space:nowrap}
.dropdown a:hover{color:var(--primary);background:#eef3f8;font-weight:500}
.has-dropdown:hover .dropdown,.has-dropdown:focus-within .dropdown{opacity:1;visibility:visible;top:100%}
.nav-cta{padding:10px 28px;font-size:15px}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;margin-left:auto}
.nav-toggle span{width:24px;height:2px;background:var(--ink)}

/* ===== Hero ===== */
.hero{position:relative;padding:170px 0 110px;background:linear-gradient(160deg,#eaf3fb 0%,#f6fafe 55%,#ffffff 100%);color:var(--text);overflow:hidden}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(90px);opacity:.55;animation:float 9s ease-in-out infinite}
.hero::before{width:480px;height:480px;background:#cfe3f4;top:-140px;left:-120px}
.hero::after{width:420px;height:420px;background:#dcebf7;bottom:-160px;right:-100px;animation-delay:3s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(30px)}}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;background:rgba(77,138,195,.1);border:1px solid rgba(77,138,195,.25);color:var(--primary);padding:6px 16px;border-radius:999px;margin-bottom:22px}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);animation:pulse 1.6s infinite}
@keyframes pulse{50%{opacity:.3}}
.hero h1{font-size:52px;line-height:1.25;font-weight:800;letter-spacing:1px;color:var(--ink)}
.hero h1 .grad{background:linear-gradient(90deg,#3670a3,#4d8ac3);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero .sub{margin:22px 0 36px;font-size:17px;color:var(--muted);max-width:560px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:44px;margin-top:52px;flex-wrap:wrap}
.hero-stats .num{font-size:30px;font-weight:800;color:var(--ink)}
.hero-stats .num i{font-style:normal;font-size:16px;color:var(--primary)}
.hero-stats .lab{font-size:13px;color:var(--muted)}

/* Hero 右侧 AI 对话卡片 */
.ai-card{background:#ffffff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 24px 60px rgba(60,90,120,.14)}
.ai-card .q{background:#f0f6fc;border-radius:14px 14px 14px 4px;padding:12px 16px;font-size:14.5px;margin-bottom:16px;color:var(--text)}
.ai-card .a{background:#f7fafd;border-radius:14px 14px 4px 14px;padding:14px 16px;font-size:13.5px;color:var(--text);line-height:1.8}
.ai-card .a .brand{color:var(--primary);font-weight:700}
.ai-card .typing{display:inline-flex;gap:4px;padding:6px 0}
.ai-card .typing i{width:6px;height:6px;border-radius:50%;background:var(--primary);animation:blink 1.2s infinite}
.ai-card .typing i:nth-child(2){animation-delay:.2s}
.ai-card .typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{50%{opacity:.2}}
.ai-card .foot{display:flex;justify-content:space-between;align-items:center;margin-top:16px;font-size:12px;color:var(--muted)}
.ai-card .src{display:flex;gap:6px}
.ai-card .src b{background:rgba(77,138,195,.1);border:1px solid rgba(77,138,195,.25);color:var(--primary);padding:2px 10px;border-radius:999px;font-weight:500;font-size:11px}

/* 合作伙伴条 */
.brands{background:#fff;border-bottom:1px solid var(--line);padding:26px 0}
.brands .title{text-align:center;font-size:13px;color:var(--accent);letter-spacing:3px;margin-bottom:18px}
.brand-track{display:flex;gap:60px;justify-content:center;flex-wrap:wrap}
.brand-track span{font-size:16px;font-weight:700;color:var(--accent);letter-spacing:1px}

/* ===== 五大核心价值 ===== */
.values{background:var(--bg)}
.value-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.value-card{background:var(--card);border-radius:var(--radius);padding:30px 22px;box-shadow:var(--shadow);transition:.3s;border:1px solid transparent;position:relative;overflow:hidden}
.value-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad);opacity:0;transition:.3s}
.value-card:hover{transform:translateY(-6px);border-color:rgba(77,138,195,.25)}
.value-card:hover::before{opacity:1}
.value-card .ico{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,rgba(77,138,195,.12),rgba(179,207,230,.12));display:grid;place-items:center;font-size:24px;margin-bottom:18px}
.value-card h3{font-size:17px;color:var(--ink);margin-bottom:10px;font-weight:700}
.value-card p{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ===== 核心优势 Tabs ===== */
.adv{background:#fff}
.tabs{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:44px}
.tab{padding:10px 28px;border-radius:999px;border:1.5px solid var(--line);background:#fff;color:var(--text);font-size:15px;cursor:pointer;transition:.25s}
.tab:hover{border-color:var(--primary);color:var(--primary)}
.tab.active{background:var(--grad-orange);border-color:transparent;color:#fff;box-shadow:0 8px 22px rgba(196,73,10,.32)}
.tab-panel{display:none;animation:fadeUp .45s ease}
.tab-panel.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.adv-wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.adv-card{background:linear-gradient(180deg,#eef3f8,#fff);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:.3s}
.adv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(77,138,195,.25)}
.adv-card .badge{display:inline-block;font-size:12px;color:var(--primary);background:rgba(77,138,195,.09);padding:3px 12px;border-radius:999px;margin-bottom:14px;letter-spacing:1px}
.adv-card h3{font-size:17px;color:var(--ink);margin-bottom:10px}
.adv-card p{font-size:13.5px;color:var(--muted)}
.adv-note{text-align:center;margin-top:30px}
.adv-note .btn{font-size:15px;padding:11px 30px}

/* ===== 认证跑马灯 ===== */
.certs{background:var(--bg);color:var(--text);padding:60px 0;overflow:hidden}
.certs h2{text-align:center;font-size:28px;margin-bottom:8px;color:var(--ink)}
.certs .sub{text-align:center;color:var(--muted);font-size:14px;margin-bottom:36px}
.marquee{position:relative;mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:flex;gap:18px;width:max-content;animation:scrollx 30s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes scrollx{to{transform:translateX(-50%)}}
.cert-item{flex-shrink:0;border:1px solid var(--line);background:#fff;border-radius:12px;padding:14px 26px;font-size:14px;color:var(--text);white-space:nowrap;box-shadow:var(--shadow)}

/* ===== 产品功能 ===== */
.features{background:var(--bg)}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-card{background:#fff;border-radius:var(--radius);padding:32px 28px;box-shadow:var(--shadow);transition:.3s;position:relative}
.feature-card:hover{transform:translateY(-6px)}
.feature-card .num{position:absolute;top:22px;right:26px;font-size:40px;font-weight:900;color:rgba(77,138,195,.08)}
.feature-card .ico{width:56px;height:56px;border-radius:15px;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:26px;margin-bottom:20px;box-shadow:0 10px 22px rgba(77,138,195,.3)}
.feature-card h3{font-size:18px;color:var(--ink);margin-bottom:14px}
.feature-card li{font-size:13.5px;color:var(--muted);padding-left:22px;position:relative;margin-bottom:8px}
.feature-card li::before{content:"✦";position:absolute;left:0;color:var(--accent);font-size:12px}
.feature-card.wide{grid-column:span 3;display:flex;align-items:center;gap:34px;background:linear-gradient(100deg,#eaf3fb,#f6fafe);color:var(--text);border:1px solid var(--line)}
.feature-card.wide h3{color:var(--ink)}
.feature-card.wide .ico{background:var(--grad)}
.feature-card.wide li{color:var(--muted)}
.feature-card.wide .num{color:rgba(77,138,195,.08)}

/* ===== 应用场景 ===== */
.scenes .tabs .tab{min-width:130px}
.scene-panel{display:none;background:#fff;border:1px solid var(--line);border-radius:20px;padding:46px;box-shadow:var(--shadow);animation:fadeUp .45s ease}
.scene-panel.active{display:grid;grid-template-columns:1fr 1fr;gap:50px}
.scene-panel .left h3{font-size:26px;color:var(--ink);margin-bottom:6px}
.scene-panel .left .kicker{color:var(--primary);font-size:14px;font-weight:600;margin-bottom:16px}
.scene-panel .left p{color:var(--muted);font-size:14px}
.scene-panel .right li{display:flex;gap:12px;font-size:14.5px;color:var(--text);margin-bottom:14px}
.scene-panel .right li b{flex-shrink:0;width:24px;height:24px;border-radius:50%;background:rgba(77,138,195,.1);color:var(--primary);display:grid;place-items:center;font-size:12px;margin-top:3px}
.scene-cta{margin-top:22px}

/* ===== 行业方案 ===== */
.industries{background:var(--bg)}
.ind-tabs{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-bottom:40px}
.ind-panel{display:none;animation:fadeUp .45s ease;background:#fff;border-radius:20px;box-shadow:var(--shadow);overflow:hidden;border:1px solid var(--line)}
.ind-panel.active{display:grid;grid-template-columns:1.05fr .95fr}
.ind-panel .info{padding:44px 40px}
.ind-panel .info h3{font-size:24px;color:var(--ink)}
.ind-panel .info .slogan{color:var(--primary);font-weight:600;font-size:15px;margin:8px 0 16px}
.ind-panel .info p{font-size:14px;color:var(--muted)}
.ind-panel .info li{font-size:14px;color:var(--text);padding-left:24px;position:relative;margin:12px 0}
.ind-panel .info li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}
.ind-panel .visual{background:linear-gradient(140deg,#dcebf7,#eaf3fb 55%,#f6fafe);display:grid;place-items:center;padding:44px;position:relative;overflow:hidden}
.ind-panel .visual::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;background:rgba(77,138,195,.08);top:-80px;right:-80px}
.ind-panel .visual .big{font-size:60px}
.ind-panel .visual .tag{margin-top:14px;background:var(--grad);border:none;color:#fff;padding:8px 22px;border-radius:999px;font-size:14px;box-shadow:0 8px 20px rgba(77,138,195,.3)}

/* ===== 客户案例 ===== */
.cases .tabs{flex-wrap:wrap}
.case-panel{display:none;animation:fadeUp .45s ease}
.case-panel.active{display:block}
.case-box{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:44px;display:grid;grid-template-columns:1fr 1fr 1fr;gap:28px}
.case-box .col h3,.case-box .col h4{display:flex;align-items:center;gap:8px;font-size:15px;color:var(--ink);margin-bottom:16px;font-weight:700}
.case-box .col h3::before,.case-box .col h4::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--grad)}
.case-box .col p{font-size:13.5px;color:var(--muted);margin-bottom:14px}
.case-box .metrics{display:flex;gap:14px;flex-wrap:wrap;margin-top:6px}
.case-box .metric{flex:1;min-width:120px;background:linear-gradient(135deg,rgba(77,138,195,.07),rgba(179,207,230,.07));border:1px solid rgba(77,138,195,.14);border-radius:12px;padding:14px;text-align:center}
.case-box .metric b{display:block;font-size:22px;color:var(--primary)}
.case-box .metric span{font-size:12px;color:var(--muted)}

/* ===== 合作模式 ===== */
.modes{background:var(--bg)}
.mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mode-card{background:#fff;border-radius:20px;padding:38px 30px;border:1px solid var(--line);transition:.3s;position:relative;overflow:hidden}
.mode-card:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.mode-card .ico{font-size:34px;margin-bottom:16px}
.mode-card h3{font-size:19px;color:var(--ink);margin-bottom:12px}
.mode-card p{font-size:14px;color:var(--muted)}
.mode-card .fit{margin-top:18px;font-size:12.5px;color:var(--primary);background:rgba(77,138,195,.07);padding:8px 14px;border-radius:10px;display:inline-block}
.mode-card.hot{border:2px solid transparent;background:linear-gradient(#fff,#fff) padding-box,var(--grad-orange) border-box}
.mode-card.hot .ribbon{position:absolute;top:16px;right:-34px;background:var(--grad-orange);color:#fff;font-size:12px;padding:4px 40px;transform:rotate(40deg)}
.modes-cta{text-align:center;margin-top:38px}

/* ===== 新闻 ===== */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s;display:block}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.news-card .cover{height:150px;background:linear-gradient(135deg,#4d8ac3,#6d9bc4);display:grid;place-items:center;color:#fff;font-size:30px}
.news-card .body{padding:20px 22px}
.news-card .date{font-size:12px;color:var(--muted)}
.news-card h3{font-size:15.5px;color:var(--ink);margin:8px 0;line-height:1.5}

/* ===== CTA ===== */
.cta{position:relative;padding:100px 0;background:linear-gradient(160deg,#eaf3fb 0%,#f6fafe 100%);color:var(--text);text-align:center;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 20% 30%,rgba(77,138,195,.12),transparent 40%),
  radial-gradient(circle at 80% 60%,rgba(127,169,204,.14),transparent 45%)}
.cta h2{position:relative;font-size:36px;margin-bottom:16px;color:var(--ink)}
.cta p{position:relative;color:var(--muted);margin-bottom:36px}
.cta .btn{position:relative}

/* ===== FAQ ===== */
.faq{background:#fff}
.faq-item{border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden;transition:.25s}
.faq-item summary{cursor:pointer;padding:18px 24px;font-size:15.5px;color:var(--ink);font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;color:var(--primary);transition:.25s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .ans{padding:0 24px 18px;font-size:14px;color:var(--muted)}
.faq-item:hover{border-color:rgba(77,138,195,.3)}

/* ===== Footer ===== */
footer{background:#f4f8fc;color:var(--text);padding:70px 0 30px;border-top:1px solid var(--line)}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:50px}
.foot-grid h3,.foot-grid h4{color:var(--ink);font-size:15px;margin-bottom:18px}
.foot-grid li{margin-bottom:10px;font-size:13.5px;cursor:pointer;color:var(--muted)}
.foot-grid li:hover{color:var(--primary)}
.foot-grid .about p{font-size:13px;line-height:1.8;margin:14px 0;color:var(--muted)}
.foot-grid .contact li{display:flex;gap:8px;align-items:center}
.copyright{border-top:1px solid var(--line);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:12.5px;color:var(--muted)}

/* ===== 友情链接（仅首页） ===== */
.friend-links{border-top:1px solid var(--line);padding:28px 0 22px;margin-bottom:0}
.friend-links h3,.friend-links h4{color:var(--ink);font-size:15px;margin-bottom:14px}
.friend-links .fl-list{display:flex;flex-wrap:wrap;gap:10px 20px}
.friend-links .fl-list a{font-size:13px;color:var(--muted);transition:.2s}
.friend-links .fl-list a:hover{color:var(--primary)}

/* ===== 悬浮侧栏 ===== */
.float-side{position:fixed;right:18px;bottom:120px;z-index:90;display:flex;flex-direction:column;gap:12px}
.float-side a{width:52px;height:52px;border-radius:14px;background:#fff;box-shadow:0 8px 24px rgba(60,90,120,.16);display:grid;place-items:center;flex-direction:column;font-size:10px;color:var(--text);transition:.25s;text-align:center;line-height:1.2;padding-top:6px}
.float-side a:hover{background:var(--accent);color:#fff;transform:translateY(-3px)}
.float-side .ic{font-size:18px;display:block}
.float-side .qr{position:absolute;right:64px;bottom:-40px;background:#fff;padding:12px;border-radius:12px;box-shadow:var(--shadow);display:none;white-space:nowrap}
.float-side a.wx{position:relative}
.float-side a.wx.show .qr{display:block}
.float-side .qr .box{width:150px;height:auto;display:block;border-radius:6px;object-fit:contain}
.float-side .qr p{font-size:11px;color:var(--muted);text-align:center;margin-top:6px}

.backtop{position:fixed;right:18px;bottom:50px;z-index:90;width:52px;height:52px;border-radius:14px;background:var(--grad-orange);color:#fff;display:none;place-items:center;cursor:pointer;box-shadow:0 10px 24px rgba(196,73,10,.4);font-size:20px;border:none}
.backtop.show{display:grid}

/* 弹窗 */
.modal{position:fixed;inset:0;z-index:200;background:rgba(8,12,40,.6);backdrop-filter:blur(4px);display:none;place-items:center}
.modal.show{display:grid}
.modal .box{background:#fff;border-radius:20px;padding:40px;width:min(460px,92%);position:relative;animation:fadeUp .35s ease}
.modal .close{position:absolute;top:16px;right:20px;font-size:22px;color:var(--muted);cursor:pointer;border:none;background:none}
.modal h3{font-size:22px;color:var(--ink);text-align:center;margin-bottom:8px}
.modal .sub{text-align:center;font-size:13px;color:var(--muted);margin-bottom:26px}
.modal input{width:100%;padding:13px 18px;border:1.5px solid var(--line);border-radius:12px;font-size:15px;margin-bottom:14px;outline:none;transition:.2s}
.modal input:focus{border-color:var(--primary)}
.modal .btn{width:100%}
.modal .tip{font-size:11.5px;color:var(--muted);text-align:center;margin-top:12px}

/* 滚动显现 */
.reveal{opacity:0;transform:translateY(26px);transition:.7s ease}
.reveal.in{opacity:1;transform:none}

.foot-grid a{color:inherit;display:block}
.foot-grid a:hover{color:var(--primary)}

/* ===== 子页面通用 ===== */
.page-hero{position:relative;padding:150px 0 80px;background:linear-gradient(160deg,#eaf3fb 0%,#f6fafe 55%,#ffffff 100%);color:var(--text);overflow:hidden}
.page-hero::before,.page-hero::after{content:"";position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;animation:float 9s ease-in-out infinite}
.page-hero::before{width:420px;height:420px;background:#cfe3f4;top:-120px;left:-100px}
.page-hero::after{width:360px;height:360px;background:#dcebf7;bottom:-120px;right:-80px;animation-delay:3s}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:46px;line-height:1.25;font-weight:800;letter-spacing:1px;color:var(--ink)}
.page-hero h1 .grad{background:linear-gradient(90deg,#3670a3,#4d8ac3);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.page-hero .sub{margin-top:18px;font-size:16px;color:var(--muted);max-width:640px}
.page-hero .actions{margin-top:32px}
.bread{font-size:13px;color:var(--muted);margin-bottom:14px}
.bread a{color:var(--muted)}
.bread a:hover{color:var(--primary)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}

/* ===== 案例列表页 ===== */
.case-filter{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-bottom:44px}
.case-filter .fbtn{padding:9px 24px;border-radius:999px;border:1.5px solid var(--line);background:#fff;color:var(--text);font-size:15px;cursor:pointer;transition:.25s}
.case-filter .fbtn:hover{border-color:var(--primary);color:var(--primary)}
.case-filter .fbtn.active{background:var(--grad-orange);border-color:transparent;color:#fff;box-shadow:0 8px 22px rgba(196,73,10,.28)}
.case-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(77,138,195,.3)}
.case-card .cover{height:170px;display:grid;place-items:center;color:#fff;font-size:40px;position:relative}
.case-card .cover .cat{position:absolute;top:12px;left:12px;font-size:12px;background:rgba(255,255,255,.9);color:var(--primary);padding:3px 12px;border-radius:999px;font-weight:600}
.case-card .body{padding:20px 22px 18px;flex:1;display:flex;flex-direction:column}
.case-card h3{font-size:16.5px;color:var(--ink);line-height:1.5;margin-bottom:8px}
.case-card .desc{font-size:13px;color:var(--muted);line-height:1.7;flex:1}
.case-card .foot{display:flex;justify-content:space-between;align-items:center;margin-top:16px;padding-top:14px;border-top:1px dashed var(--line)}
.case-card .foot .views{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:5px}
.case-card .foot .views::before{content:"👁";font-size:13px}
.case-card .foot .more{font-size:13.5px;color:var(--primary);font-weight:600}
.case-card:hover .foot .more{color:var(--accent)}

/* ===== 案例详情页 ===== */
.case-detail-layout{display:grid;grid-template-columns:1fr 300px;gap:36px;align-items:start}
.case-detail-main{background:#fff;border:1px solid var(--line);border-radius:20px;padding:44px;box-shadow:var(--shadow)}
.case-detail-main h1{font-size:30px;color:var(--ink);line-height:1.4;margin-bottom:20px}
.case-meta{display:flex;flex-wrap:wrap;gap:10px 28px;padding:18px 20px;background:#eef3f8;border-radius:14px;margin-bottom:26px;font-size:14px;color:var(--text)}
.case-meta b{color:var(--ink);font-weight:600;margin-right:4px}
.case-meta .stars{color:var(--accent);letter-spacing:2px}
.case-detail-main .summary{font-size:15px;color:var(--text);line-height:1.9;padding:18px 22px;border-left:4px solid var(--accent);background:linear-gradient(90deg,rgba(77,138,195,.05),transparent);border-radius:0 12px 12px 0;margin-bottom:32px}
.case-sec{margin-bottom:34px}
.case-sec h3{font-size:19px;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:10px}
.case-sec h3::before{content:"";width:5px;height:20px;border-radius:3px;background:var(--grad)}
.case-sec p{font-size:14.5px;color:var(--text);line-height:1.9;margin-bottom:10px}
.case-sec ul{margin-top:8px}
.case-sec li{font-size:14.5px;color:var(--text);line-height:1.85;padding-left:26px;position:relative;margin-bottom:8px}
.case-sec li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}
.case-sec li b{color:var(--ink)}
.case-result{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:6px}
.case-result .r-item{background:linear-gradient(135deg,rgba(77,138,195,.07),rgba(77,138,195,.07));border:1px solid rgba(77,138,195,.16);border-radius:14px;padding:20px 14px;text-align:center}
.case-result .r-item b{display:block;font-size:24px;color:var(--accent);font-weight:800;line-height:1.3}
.case-result .r-item span{font-size:12.5px;color:var(--muted);display:block;margin-top:6px}
.case-quote{background:#eef3f8;border-radius:14px;padding:22px 26px;font-size:14px;color:var(--text);line-height:1.9;margin-bottom:34px;position:relative}
.case-quote::before{content:"❝";position:absolute;top:8px;left:14px;font-size:34px;color:rgba(77,138,195,.25);line-height:1}
.case-quote .who{margin-top:10px;font-size:13px;color:var(--muted);text-align:right}
.case-visual{height:280px;border-radius:16px;display:grid;place-items:center;color:#fff;font-size:64px;margin-bottom:34px;position:relative;overflow:hidden}
.case-visual .cap{position:absolute;bottom:14px;right:18px;font-size:13px;background:rgba(0,0,0,.35);padding:4px 14px;border-radius:999px}
.case-pn{display:flex;justify-content:space-between;gap:16px;margin-top:10px;padding-top:26px;border-top:1px solid var(--line)}
.case-pn a{flex:1;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;transition:.25s}
.case-pn a:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.case-pn .lab{font-size:12px;color:var(--muted);margin-bottom:4px}
.case-pn .tt{font-size:14.5px;color:var(--ink);font-weight:600}
.case-pn a.next{text-align:right}
/* 侧边栏 */
.case-side{position:sticky;top:90px;display:flex;flex-direction:column;gap:22px}
.case-side .widget{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 22px}
.case-side .widget h4{font-size:16px;color:var(--ink);margin-bottom:16px;padding-left:12px;border-left:4px solid var(--accent);line-height:1.3}
.case-side .widget li{font-size:14px;color:var(--text);padding:9px 0;border-bottom:1px dashed var(--line);line-height:1.6}
.case-side .widget li:last-child{border-bottom:none}
.case-side .widget li a{color:inherit}
.case-side .widget li a:hover{color:var(--primary)}
.case-side .tagcloud{display:flex;flex-wrap:wrap;gap:8px}
.case-side .tagcloud a{font-size:12.5px;color:var(--text);background:#eef3f8;border:1px solid var(--line);padding:5px 13px;border-radius:999px;transition:.2s}
.case-side .tagcloud a:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
/* 最新案例 */
.latest-case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.latest-case-grid a{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.25s;display:block}
.latest-case-grid a:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.latest-case-grid .cv{height:86px;display:grid;place-items:center;color:#fff;font-size:26px}
.latest-case-grid .tt{font-size:13.5px;color:var(--ink);padding:12px 14px;line-height:1.5;font-weight:600}

/* ===== 移动端底部电话条 ===== */
.mob-call-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:88;background:#fff;border-top:1px solid #e2eaf3;padding:10px 14px calc(10px + env(safe-area-inset-bottom));box-shadow:0 -6px 20px rgba(60,90,120,.08);align-items:center;gap:12px}
.mob-call-bar .txt{display:flex;flex-direction:column;flex:1;min-width:0}
.mob-call-bar .txt small{font-size:11px;color:var(--muted)}
.mob-call-bar .txt b{font-size:17px;color:var(--accent);letter-spacing:.5px;line-height:1.3}
.mob-call-bar a.btn-call{flex:0 0 auto;background:var(--accent);color:#fff;font-weight:700;padding:10px 18px;border-radius:24px;font-size:15px;display:inline-flex;align-items:center;gap:6px;text-decoration:none}
.mob-call-bar a.btn-call::before{content:"📞";font-size:15px}
@media (max-width:1024px){
  .case-detail-layout{grid-template-columns:1fr}
  .case-side{position:static}
  .case-card-grid{grid-template-columns:1fr 1fr}
  .latest-case-grid{grid-template-columns:1fr 1fr}
  .case-detail-main{padding:28px 22px}
  .case-result{grid-template-columns:1fr}
  .mob-call-bar{display:flex}
  .float-side{display:none}
  .backtop{display:none !important}
  body{padding-bottom:70px}
  footer{padding-bottom:90px}

  .grid-3,.grid-2{grid-template-columns:1fr}
  .page-hero h1{font-size:32px}
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr}
  .hero h1{font-size:38px}
  .value-grid{grid-template-columns:repeat(2,1fr)}
  .adv-wrap{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:1fr 1fr}
  .feature-card.wide{grid-column:span 2;flex-direction:column;text-align:center;gap:16px}
  .scene-panel.active{grid-template-columns:1fr}
  .ind-panel.active{grid-template-columns:1fr}
  .case-box{grid-template-columns:1fr;grid-template-rows:auto}
  .mode-grid{grid-template-columns:1fr}
  .news-list{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none;align-items:stretch}
  .nav-toggle{display:flex}
  .nav-links.open{display:flex;position:absolute;top:78px;left:0;right:0;background:#fff;flex-direction:column;padding:20px 5%;border-bottom:1px solid var(--line);gap:6px}
  .nav-links.open a,.nav-links.open .nav-item>a{font-size:16px}
  .nav-links.open .nav-item>a{display:block;padding:10px 0}
  .nav-links.open .dropdown{position:static;transform:none;box-shadow:none;border:none;opacity:1;visibility:visible;display:none;padding-left:14px}
  .nav-links.open .has-dropdown.open .dropdown{display:block}
  .dropdown a{padding:8px 18px}
}
@media (max-width:600px){
  .case-card-grid{grid-template-columns:1fr}
  .latest-case-grid{grid-template-columns:1fr 1fr}
  .value-grid{grid-template-columns:1fr}
  .adv-wrap{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .feature-card.wide{grid-column:span 1}
  .news-list{grid-template-columns:1fr}
  .section{padding:60px 0}
  .section-head h2{font-size:28px}
  .hero{padding:130px 0 80px}
  .hero h1{font-size:32px}
  .hero-stats{gap:26px}
}

/* a11y: nav-toggle 改为 button 后重置默认样式 */
.nav-toggle{border:0;background:none;padding:0;font:inherit}