/* ===== NarraMax Design System (light) ===== */
:root{
  --primary:#4f46e5;
  --primary-dark:#4338ca;
  --primary-soft:#eef2ff;
  --violet:#8b5cf6;
  --ink:#0f172a;
  --muted:#64748b;
  --dim:#94a3b8;
  --bg:#ffffff;
  --bg-soft:#f8fafc;
  --line:#e5e9f0;
  --green:#10b981;
  --orange:#f59e0b;
  --pink:#ec4899;
  --sky:#0ea5e9;
  --radius:14px;
  --radius-lg:20px;
  --shadow-sm:0 1px 3px rgba(15,23,42,.06);
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{background:var(--bg);color:var(--ink);font-family:var(--font);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px;}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.3px;}
.logo .mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--primary),var(--violet));display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;font-weight:800;}
.nav-links{display:flex;gap:30px;align-items:center;}
.nav-links a{color:var(--muted);font-size:15px;font-weight:500;transition:color .15s;}
.nav-links a:hover{color:var(--ink);}
.nav-cta{display:flex;align-items:center;gap:12px;}
.user-dropdown{position:relative;display:inline-block;}
.user-trigger{display:flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;cursor:pointer;font-size:14px;font-weight:400;color:var(--ink);background:var(--bg-soft);transition:background .2s;user-select:none;}
.user-trigger:hover{background:var(--bg-strong, #eef0f5);}
.trigger-avatar{width:26px;height:26px;border-radius:50%;object-fit:cover;background:var(--bg-soft);}
.trigger-text{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.caret{display:inline-block;width:0;height:0;margin-left:2px;border-left:5px solid transparent;border-right:5px solid transparent;border-top:6px solid currentColor;transition:transform .2s;}
.user-dropdown.open .caret{transform:rotate(180deg);}
.user-menu{display:none;position:absolute;top:calc(100% + 8px);right:0;min-width:150px;padding:5px 0;background:#fff;border:1px solid #e5e7eb;border-radius:4px;box-shadow:0 6px 12px rgba(0,0,0,.15);z-index:100;}
.user-dropdown.open .user-menu{display:block;}
/* 桥接触发器与菜单之间的空隙，防止鼠标移向菜单项时误触 mouseleave 导致菜单消失 */
.user-menu::before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px;}
.user-menu a{display:block;padding:8px 16px;font-size:14px;color:#333;text-decoration:none;white-space:nowrap;transition:background .15s;}
.user-menu a i{width:1.4em;margin-right:4px;text-align:center;color:#666;}
.user-menu a:hover{background:#f5f5f5;color:#262626;}
.nav-toggle{display:none;width:40px;height:40px;border:none;background:transparent;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:9px;border-radius:8px;}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--ink);border-radius:2px;transition:all .2s;}
/* 工作台页面头部：内容铺满全宽，与下方工具区(.wb 通栏)对齐，替代首页的 .wrap 限宽 */
.nav-full{max-width:none;padding:0 16px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:10px;font-weight:600;font-size:15px;cursor:pointer;border:1px solid transparent;transition:all .15s;white-space:nowrap;}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--violet));color:#fff;}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(79,70,229,.28);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);}
.btn-lg{padding:14px 28px;font-size:16px;border-radius:12px;}
.btn-block{width:100%;}

/* ===== Hero ===== */
.hero{padding:72px 0 56px;text-align:center;background:
  radial-gradient(60% 80% at 50% -10%,var(--primary-soft),transparent 70%),
  var(--bg);}
.hero .eyebrow{display:inline-block;padding:5px 14px;border-radius:999px;background:var(--primary-soft);color:var(--primary-dark);font-size:13px;font-weight:600;margin-bottom:20px;}
.hero h1{font-size:46px;line-height:1.15;font-weight:800;letter-spacing:-1px;margin:0 auto 18px;max-width:760px;}
.hero h1 .grad{background:linear-gradient(120deg,var(--primary),var(--violet));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero p.lead{font-size:18px;color:var(--muted);max-width:620px;margin:0 auto 30px;}
.hero .cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.hero .stats{display:flex;gap:40px;justify-content:center;margin-top:44px;flex-wrap:wrap;}
.hero .stat b{font-size:28px;font-weight:800;display:block;letter-spacing:-.5px;}
.hero .stat span{font-size:13.5px;color:var(--dim);}

/* ===== Section ===== */
.section{padding:64px 0;}
.section-head{text-align:center;max-width:640px;margin:0 auto 44px;}
.section-head .kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1px;color:var(--primary);text-transform:uppercase;margin-bottom:10px;}
.section-head h2{font-size:32px;font-weight:800;letter-spacing:-.6px;line-height:1.25;margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:16px;}

/* ===== Tool cards ===== */
.tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.tool-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 26px;transition:all .2s;display:flex;flex-direction:column;position:relative;overflow:hidden;}
.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent;}
.tool-card .icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px;}
.tool-card h3{font-size:19px;font-weight:700;margin-bottom:8px;}
.tool-card p{color:var(--muted);font-size:14.5px;flex:1;margin-bottom:18px;}
.tool-card .tag{position:absolute;top:18px;right:18px;font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;background:var(--primary-soft);color:var(--primary-dark);}
.tool-card .go{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14.5px;color:var(--primary);}
.tool-card .go:hover{gap:10px;}

/* tool icon colors */
.tc-image{background:#eef2ff;color:#4f46e5;}
.tc-video{background:#fdf1f8;color:#ec4899;}
.tc-replica{background:#fff4e5;color:#f59e0b;}
.tc-link{background:#e7f7f1;color:#10b981;}
.tc-digital{background:#e8f5fe;color:#0ea5e9;}

/* ===== Steps ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;}
.step .num{font-size:13px;font-weight:800;color:var(--primary);letter-spacing:1px;display:block;margin-bottom:10px;}
.step h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.step p{color:var(--muted);font-size:14.5px;}

/* ===== Why ===== */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.why-item{display:flex;gap:14px;padding:22px;border-radius:var(--radius);border:1px solid var(--line);background:var(--bg);}
.why-item .ic{flex-shrink:0;width:40px;height:40px;border-radius:10px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;}
.why-item b{display:block;font-size:15.5px;margin-bottom:3px;}
.why-item span{color:var(--muted);font-size:13.5px;}

/* ===== Pricing ===== */
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch;}
.price-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px 28px;display:flex;flex-direction:column;position:relative;}
.price-card.hot{border:2px solid var(--primary);box-shadow:var(--shadow);}
.price-card .ribbon{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--primary);color:#fff;font-size:12px;font-weight:700;padding:4px 14px;border-radius:999px;}
.price-card h3{font-size:17px;font-weight:700;margin-bottom:4px;}
.price-card .desc{color:var(--muted);font-size:13.5px;margin-bottom:18px;min-height:42px;}
.price-card .amount{font-size:34px;font-weight:800;letter-spacing:-1px;}
.price-card .amount small{font-size:14px;color:var(--dim);font-weight:500;}
.price-card ul{list-style:none;margin:20px 0;flex:1;}
.price-card ul li{padding:7px 0 7px 26px;position:relative;font-size:14px;color:var(--muted);}
.price-card ul li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:700;}

/* ===== Cases ===== */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.case-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;transition:all .2s;}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.case-thumb{height:180px;background:var(--bg-soft);display:flex;align-items:center;justify-content:center;color:var(--dim);border-bottom:1px solid var(--line);}
.case-thumb svg{opacity:.5;}
.case-body{padding:18px 20px;}
.case-body h3{font-size:16px;font-weight:700;margin-bottom:4px;}
.case-body p{color:var(--muted);font-size:13.5px;}

/* ===== FAQ ===== */
.faq{max-width:760px;margin:0 auto;}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;background:var(--bg);}
.faq-item summary{cursor:pointer;padding:18px 22px;font-weight:600;font-size:15.5px;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:22px;color:var(--primary);font-weight:500;transition:transform .2s;}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-body{padding:0 22px 20px;color:var(--muted);font-size:14.5px;}

/* ===== CTA band ===== */
.cta-band{background:linear-gradient(135deg,var(--primary),var(--violet));border-radius:var(--radius-lg);padding:56px 40px;text-align:center;color:#fff;}
.cta-band h2{font-size:30px;font-weight:800;letter-spacing:-.6px;margin-bottom:12px;}
.cta-band p{opacity:.92;font-size:16px;margin-bottom:26px;}
.cta-band .btn{background:#fff;color:var(--primary-dark);font-weight:700;}
.cta-band .btn:hover{transform:translateY(-2px);}

/* ===== Footer ===== */
.site-footer{border-top:1px solid var(--line);padding:40px 0;margin-top:20px;}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;}
.footer-inner .brand{font-weight:700;color:var(--ink);}
.footer-inner .links{display:flex;gap:22px;}
.footer-inner .links a{color:var(--muted);font-size:14px;}
.footer-inner .links a:hover{color:var(--ink);}
.copyright{color:var(--dim);font-size:13px;}

/* ===== Workbench ===== */
.wb{display:grid;grid-template-columns:260px 1fr;gap:0;min-height:calc(100vh - 68px);}
.wb-side{background:var(--bg-soft);border-right:1px solid var(--line);padding:20px 16px;}
.tool-tabs{display:flex;flex-direction:column;gap:6px;}
.tool-group{display:flex;align-items:center;gap:9px;padding:18px 12px 8px;font-size:13px;font-weight:800;color:var(--ink);letter-spacing:.5px;text-transform:none;}
.tool-group::before{content:"";width:3px;height:13px;border-radius:2px;background:linear-gradient(180deg,var(--primary),var(--violet));flex-shrink:0;}
.tool-group:first-child{padding-top:0;}
.tool-tab{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:11px;cursor:pointer;font-size:14.5px;font-weight:500;color:var(--muted);border:1px solid transparent;transition:all .15s;background:transparent;width:100%;text-align:left;font-family:var(--font);}
.tool-tab:hover{background:var(--bg);color:var(--ink);}
.tool-tab.active{background:var(--bg);color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm);font-weight:600;}
.tool-tab .t-ic{width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0;}
.wb-main{padding:32px 40px;overflow-y:auto;}
.wb-head{margin-bottom:26px;}
.wb-head h1{font-size:24px;font-weight:800;letter-spacing:-.4px;}
.wb-head p{color:var(--muted);font-size:14.5px;margin-top:4px;}

.wb-panel{display:none;animation:fade .2s;}
.wb-panel.active{display:block;}
@keyframes fade{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:none;}}

.wb-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.wb-col{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;}
.wb-col h2{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--ink);}
.upload-zone{border:2px dashed var(--line);border-radius:var(--radius);padding:40px 20px;text-align:center;color:var(--dim);cursor:pointer;transition:all .15s;}
.upload-zone:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft);}
.upload-zone .up-ic{font-size:30px;margin-bottom:10px;}
.upload-zone p{font-size:13.5px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px;color:var(--ink);}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font-size:14px;font-family:var(--font);background:var(--bg-soft);color:var(--ink);transition:border .15s;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);background:var(--bg);}
.field textarea{resize:vertical;min-height:84px;}
.result-zone{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:300px;color:var(--dim);text-align:center;background:var(--bg-soft);border-radius:var(--radius);padding:30px;}
.result-zone .r-ic{font-size:40px;margin-bottom:12px;opacity:.6;}
.result-zone p{font-size:13.5px;max-width:260px;}
.upload-preview{display:flex;flex-wrap:wrap;gap:8px;}
.result-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
.beta-banner{display:flex;align-items:center;gap:10px;background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;border-radius:12px;padding:14px 18px;font-size:14px;margin-bottom:22px;}
.beta-banner b{white-space:nowrap;}

/* ===== Modal ===== */
.modal-mask{position:fixed;inset:0;background:rgba(15,23,42,.5);display:none;align-items:center;justify-content:center;z-index:100;padding:20px;}
.modal-mask.show{display:flex;}
.modal{background:var(--bg);border-radius:var(--radius-lg);max-width:440px;width:100%;padding:28px;box-shadow:0 20px 60px rgba(15,23,42,.3);max-height:90vh;overflow-y:auto;}
.modal h3{font-size:20px;font-weight:800;margin-bottom:6px;padding-right:28px;}
.modal .sub{color:var(--muted);font-size:14px;margin-bottom:20px;}
.modal .close{float:right;cursor:pointer;color:var(--dim);font-size:24px;line-height:1;border:none;background:none;margin:-4px -4px 0 0;}
.modal .wechat-box{display:none;background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:20px;text-align:center;margin-top:4px;}
.modal .wechat-box.show{display:block;}
.modal .wechat-box .wxid{font-size:20px;font-weight:800;color:var(--primary);margin:8px 0;}
.modal .tip{color:var(--dim);font-size:12.5px;margin-top:14px;text-align:center;}

/* ===== WeChat QR ===== */
.qr-wrap{display:flex;justify-content:center;margin:16px 0;}
.qr-img{width:168px;height:168px;border-radius:12px;border:1px solid var(--line);object-fit:contain;background:#fff;}
.qr-fallback{display:none;width:168px;height:168px;border:2px dashed var(--line);border-radius:12px;align-items:center;justify-content:center;text-align:center;color:var(--dim);font-size:12.5px;line-height:1.6;background:var(--bg-soft);padding:12px;}
.footer-qr{display:flex;align-items:center;gap:14px;}
.footer-qr .qr-img,.footer-qr .qr-fallback{width:72px;height:72px;border-radius:8px;}
.footer-qr .qr-fallback{font-size:10.5px;padding:6px;}
.footer-qr .qr-label{font-size:13px;color:var(--muted);line-height:1.5;}

/* ===== QR Modal ===== */
.qr-modal{position:fixed;inset:0;z-index:1000;display:none;align-items:center;justify-content:center;padding:24px;}
.qr-modal.open{display:flex;}
.qr-modal-mask{position:absolute;inset:0;background:rgba(15,23,42,.45);backdrop-filter:blur(2px);}
.qr-modal-box{position:relative;z-index:1;background:var(--bg);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:34px 36px 28px;text-align:center;width:100%;max-width:360px;animation:qrPop .25s ease;}
.qr-modal-close{position:absolute;top:12px;right:12px;width:30px;height:30px;border:none;background:var(--bg-soft);border-radius:50%;font-size:20px;line-height:1;color:var(--muted);cursor:pointer;transition:.2s;}
.qr-modal-close:hover{background:var(--primary-soft);color:var(--primary);}
.qr-modal-title{font-size:18px;font-weight:600;color:var(--ink);margin-bottom:4px;}
.qr-modal-img{width:200px;height:200px;margin:12px auto;border-radius:12px;border:1px solid var(--line);object-fit:contain;background:#fff;}
.qr-modal-sub{font-size:13.5px;color:var(--muted);}
@keyframes qrPop{from{transform:translateY(16px);opacity:0;}to{transform:translateY(0);opacity:1;}}

/* ===== Responsive ===== */
@media (max-width:900px){
  .tools-grid,.why-grid,.steps,.pricing,.cases-grid{grid-template-columns:1fr 1fr;}
  .wb{grid-template-columns:1fr;}
  .wb-side{border-right:none;border-bottom:1px solid var(--line);}
  .tool-tabs{flex-direction:row;overflow-x:auto;}
  .tool-group{display:none;}
  .tool-tab{flex-shrink:0;}
  .wb-grid{grid-template-columns:1fr;}
  .wb-main{padding:24px 20px;}
  .hero h1{font-size:34px;}
}
@media (max-width:600px){
  .tools-grid,.why-grid,.steps,.pricing,.cases-grid{grid-template-columns:1fr;}
  .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg);flex-direction:column;gap:0;padding:8px 0;border-bottom:1px solid var(--line);box-shadow:var(--shadow);z-index:60;}
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 24px;border-bottom:1px solid var(--bg-soft);}
  .nav-links a:last-child{border-bottom:none;}
  .nav-toggle{display:flex;}
  .hero{padding:48px 0 40px;}
  .hero h1{font-size:28px;}
  .hero p.lead{font-size:16px;}
  .hero .stats{gap:24px;}
  .section{padding:40px 0;}
  .section-head h2{font-size:26px;}
  .cta-band{padding:40px 24px;}
  .cta-band h2{font-size:24px;}
}

/* ===== 右侧悬浮客服按钮 ===== */
.kefu-float{position:fixed;right:26px;bottom:32px;z-index:900;width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--violet));color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:24px;box-shadow:0 10px 24px rgba(79,70,229,.35);transition:transform .2s,box-shadow .2s;padding:0;}
.kefu-float::before{content:"";position:absolute;inset:0;border-radius:50%;animation:kefuPulse 2.4s ease-out infinite;}
.kefu-float:hover{transform:translateY(-3px) scale(1.06);box-shadow:0 14px 30px rgba(79,70,229,.45);}
.kefu-float:active{transform:scale(.96);}
@keyframes kefuPulse{0%{box-shadow:0 0 0 0 rgba(79,70,229,.35);}70%{box-shadow:0 0 0 16px rgba(79,70,229,0);}100%{box-shadow:0 0 0 0 rgba(79,70,229,0);}}
@media (max-width:600px){
  .kefu-float{right:16px;bottom:20px;width:48px;height:48px;font-size:21px;}
}