@import url('https://fonts.googleapis.com/css2?family=Mulish:wght@400;500;600;700;800&display=swap');

:root{--bg:#fff;--ink:#262626;--muted:#6d6e72;--soft:#f0f1f9;--line:#e9eaf0;--accent:#bcbe5e;--radius:10px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Mulish,'Microsoft YaHei',sans-serif;font-size:14px;line-height:1.5}.section-shell{width:min(1180px,calc(100% - 48px));margin:auto}.site-header{height:88px;width:min(1180px,calc(100% - 48px));margin:auto;display:flex;align-items:center;gap:42px;border-bottom:1px solid var(--line)}.brand{font-size:18px;font-weight:800;color:var(--ink);text-decoration:none;margin-right:auto}.site-header nav{display:flex;gap:30px}.site-header nav a,.text-link{color:var(--ink);text-decoration:none;font-size:13px}.site-header nav a:hover,.text-link:hover{text-decoration:underline}.header-cta{background:var(--ink);color:#fff;text-decoration:none;padding:10px 17px;border-radius:7px;font-size:13px}.hero{display:grid;grid-template-columns:1.08fr .92fr;gap:80px;padding:106px 0 122px;align-items:center}.eyebrow{font-size:11px;letter-spacing:1.3px;color:#77787d;font-weight:700;margin:0 0 22px;text-transform:uppercase}.hero h1,.section-heading h2,.method-section>h2,.contact-section h2{font-size:clamp(42px,5vw,64px);line-height:1.13;letter-spacing:-2.7px;margin:0;font-weight:800}.hero h1 em{font-style:normal;color:#5d5e35}.lead{color:var(--muted);font-size:17px;line-height:1.8;max-width:620px;margin:30px 0}.hero-actions{display:flex;align-items:center;gap:28px}.button{border:0;text-decoration:none;display:inline-flex;align-items:center;gap:20px;padding:13px 18px;border-radius:7px;font:700 13px Mulish,sans-serif;cursor:pointer}.button span{font-size:18px;line-height:0}.button.dark{background:var(--ink);color:#fff}.button.light{background:var(--accent);color:#1e1f16}.report-card{background:var(--soft);padding:30px;border-radius:var(--radius);min-height:442px;position:relative}.report-card:before{display:none}.report-card>*{position:relative}.card-kicker{font-size:11px;letter-spacing:1.2px;color:#74757a;margin:3px 0 42px;text-transform:uppercase}.report-card h2{font-size:28px;letter-spacing:-1px;margin:0 0 32px;font-weight:800}.issue-list{list-style:none;padding:0;margin:0}.issue-list li{display:flex;gap:15px;padding:16px 0;border-bottom:1px solid #dfe1e8;font-size:14px}.issue-list span{color:#7d803c;font-weight:800}.card-note{font-size:13px;color:var(--muted);margin-top:25px}.problem-section{padding:88px 0 110px;border-top:1px solid var(--line)}.section-heading{display:grid;grid-template-columns:1.1fr .9fr;gap:90px;align-items:end}.section-heading h2{font-size:40px;letter-spacing:-1.7px}.section-heading p{color:var(--muted);font-size:16px;line-height:1.8;margin:0}.problem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:68px}.problem-grid article{padding:24px 20px;background:#fbfbfd;border:1px solid var(--line);border-radius:var(--radius)}.problem-grid strong{font-size:17px;font-weight:800}.problem-grid p{color:var(--muted);line-height:1.7;font-size:13px;margin:14px 0 0}.results-section{display:grid;grid-template-columns:.82fr 1.18fr;gap:86px;padding:110px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);align-items:center}.results-intro h2{font-size:40px;line-height:1.25;letter-spacing:-1.7px;margin:0 0 22px;font-weight:800}.results-intro>p:not(.eyebrow){color:var(--muted);font-size:16px;line-height:1.8;max-width:420px;margin:0 0 25px}.results-panel{background:var(--soft);padding:28px 30px;border-radius:var(--radius)}.result-panel-head{display:flex;justify-content:space-between;border-bottom:1px solid #dcdee7;padding-bottom:17px;color:var(--muted);font-size:12px}.verified{color:#737736;font-weight:800}.metric-row{display:grid;grid-template-columns:1.25fr .9fr;align-items:center;gap:22px;padding:19px 0;border-bottom:1px solid #dcdee7}.metric-row strong{display:block;font-size:14px;font-weight:800}.metric-row small{display:block;color:var(--muted);font-size:11px;margin-top:5px}.bar-pair{display:flex;flex-direction:column;gap:7px}.bar{display:block;height:7px;border-radius:99px}.bar.before{background:#b4b5bb;width:42%}.bar.after{background:var(--accent);width:82%}.bar.short{width:36%}.bar.long{width:84%}.legend{display:flex;gap:20px;color:var(--muted);font-size:11px;padding-top:18px}.dot{width:8px;height:8px;border-radius:50%;display:inline-block;margin-right:6px}.before-dot{background:#b4b5bb}.after-dot{background:var(--accent)}.method-section{background:var(--soft);max-width:none;padding:100px max(24px,calc((100% - 1180px)/2)) 108px;color:var(--ink)}.method-section .eyebrow{color:#77787d}.method-section>h2{font-size:45px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:68px}.steps>div{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}.steps span{color:#7d803c;font-weight:800}.steps h3{font-size:19px;margin:24px 0 10px;font-weight:800}.steps p{color:var(--muted);line-height:1.7;margin:0;font-size:13px}.outcome-section{display:grid;grid-template-columns:1fr 1fr;gap:100px;padding:110px 0;border-bottom:1px solid var(--line)}.outcome-section h2{font-size:46px;line-height:1.25;letter-spacing:-1.8px;margin:0;font-weight:800}.outcome-copy{font-size:22px;line-height:1.55;font-weight:700}.outcome-copy p:nth-child(2){font-size:15px;line-height:1.8;color:var(--muted);max-width:500px;margin-top:24px;font-weight:400}.contact-section{display:grid;grid-template-columns:1fr 1fr;gap:110px;padding:110px 0}.contact-section h2{font-size:42px}.contact-section form{background:var(--ink);padding:32px;border-radius:var(--radius);color:#fff}.contact-section label{display:block;font-size:13px;margin-bottom:20px}.contact-section input,.contact-section textarea{display:block;width:100%;background:transparent;border:0;border-bottom:1px solid #5f6064;color:#fff;padding:11px 0;font:14px Mulish,sans-serif;outline:none}.contact-section textarea{min-height:90px;resize:vertical}.contact-section input:focus,.contact-section textarea:focus{border-color:var(--accent)}.contact-section ::placeholder{color:#96979c}.contact-section .button{margin-top:10px}.site-footer{border-top:1px solid var(--line);padding:24px 0 34px;display:flex;justify-content:space-between;color:var(--muted);font-size:12px}@media(max-width:850px){.site-header nav{display:none}.hero,.section-heading,.results-section,.outcome-section,.contact-section{grid-template-columns:1fr;gap:48px}.hero{padding:70px 0 90px}.problem-grid,.steps{grid-template-columns:1fr 1fr}.hero h1{font-size:48px}.section-heading h2,.results-intro h2,.method-section>h2,.contact-section h2{font-size:38px}}@media(max-width:540px){.section-shell,.site-header{width:min(100% - 36px,1180px)}.site-header{height:76px}.brand{font-size:16px}.header-cta{padding:9px 13px}.problem-grid,.steps{grid-template-columns:1fr}.hero h1{font-size:40px}.hero-actions{align-items:flex-start;flex-direction:column;gap:18px}.report-card{padding:24px}.method-section{padding-left:18px;padding-right:18px}.site-footer{flex-direction:column;gap:10px}}
.method-section.section-shell{width:100%;max-width:none}.method-section .steps{width:min(1180px,calc(100% - 48px));margin-left:auto;margin-right:auto;grid-template-columns:repeat(4,minmax(0,1fr))}.method-section .steps>div{min-width:0}
.chat-preview{padding:0;min-height:500px;overflow:hidden;background:#f1f2f8}.chat-topbar{height:72px;background:#fff;border-bottom:1px solid #e4e5eb;padding:16px 20px;display:flex;align-items:center;gap:11px}.chat-topbar strong{display:block;font-size:14px}.chat-topbar small{display:block;color:#8a8b91;font-size:11px;margin-top:2px}.assistant-avatar,.user-avatar{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:800}.assistant-avatar{background:#e0e5b8;color:#62652e}.assistant-avatar.small{width:27px;height:27px;flex:0 0 27px}.user-avatar{background:#d9dae1;color:#696a70}.chat-more{margin-left:auto;color:#9b9ca2;letter-spacing:2px}.chat-body{padding:18px 18px 12px;min-height:354px}.chat-time{text-align:center;color:#9899a0;font-size:10px;margin-bottom:18px}.chat-row{display:flex;gap:9px;align-items:flex-end;margin-bottom:18px}.user-row{justify-content:flex-end}.chat-bubble{max-width:78%;padding:13px 15px;border-radius:14px;font-size:13px;line-height:1.65;position:relative}.chat-bubble small{display:block;text-align:right;color:#9a9ba1;font-size:10px;margin-top:5px}.user-bubble{background:#dfeaa0;border-bottom-right-radius:4px;color:#3d401c}.assistant-bubble{background:#fff;border:1px solid #e4e5eb;border-bottom-left-radius:4px;color:#3d3e43}.chat-feedback{border-top:1px solid #dedfe7;margin:28px 0 0;padding-top:14px;color:#87888e;font-size:11px;display:flex;justify-content:space-between;gap:12px}.chat-input{height:60px;margin:0 16px 16px;background:#fff;border:1px solid #e2e3e9;border-radius:8px;padding:0 10px 0 15px;display:flex;align-items:center;color:#a1a2a7;font-size:12px}.chat-input button{margin-left:auto;border:0;background:var(--accent);color:#34351e;width:30px;height:30px;border-radius:7px;font-size:18px;cursor:pointer}
.brand img{width:30px;height:30px;display:block}.brand{display:flex;align-items:center;gap:10px}
.wechat-card{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:34px}.wechat-label{font-size:13px;color:var(--muted);margin:0 0 18px}.wechat-id{font-size:32px;font-weight:800;letter-spacing:.3px;margin:0 0 18px;color:var(--ink)}.wechat-note{max-width:430px;color:var(--muted);font-size:14px;line-height:1.8;margin:0 0 26px}.wechat-domain{font-size:12px;color:#85868d;margin:24px 0 0}
.wechat-contact-content{display:flex;align-items:center;justify-content:space-between;gap:30px}.wechat-qr{width:150px;height:150px;object-fit:cover;border-radius:8px;background:#fff;padding:8px;flex:0 0 150px}@media(max-width:540px){.wechat-contact-content{align-items:flex-start;flex-direction:column}.wechat-qr{width:170px;height:170px;flex-basis:170px}}
.audience-section{padding:110px 0;border-bottom:1px solid var(--line)}.audience-heading{display:flex;align-items:end;justify-content:space-between;gap:50px}.audience-heading h2{font-size:42px;line-height:1.25;letter-spacing:-1.7px;margin:0;font-weight:800}.audience-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:58px}.audience-grid article{padding:24px 20px;border:1px solid var(--line);border-radius:var(--radius);background:#fbfbfd}.audience-grid h3{font-size:17px;margin:0 0 12px;font-weight:800}.audience-grid p{color:var(--muted);font-size:13px;line-height:1.7;margin:0}@media(max-width:850px){.audience-heading{display:block}.audience-heading h2{font-size:38px}.audience-grid{grid-template-columns:1fr 1fr}}@media(max-width:540px){.audience-grid{grid-template-columns:1fr}}
.contact-section{grid-template-columns:1.12fr .88fr;gap:80px}.contact-section h2{font-size:38px;letter-spacing:-2px}
@media(max-width:850px){.contact-section{grid-template-columns:1fr;gap:48px}.contact-section h2{font-size:38px}}
.audience-heading{display:block}.audience-heading h2{margin-top:16px}
.faq-section{padding:100px 0;border-bottom:1px solid var(--line)}.faq-section h2{font-size:42px;line-height:1.25;letter-spacing:-1.7px;margin:0;font-weight:800}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 20px;margin-top:44px}.faq-grid details{background:#fbfbfd;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}.faq-grid summary{cursor:pointer;font-weight:800;font-size:15px}.faq-grid p{color:var(--muted);font-size:13px;line-height:1.8;margin:16px 0 0}@media(max-width:540px){.faq-grid{grid-template-columns:1fr}.faq-section h2{font-size:36px}}
.contact-section form{background:var(--soft);border:1px solid var(--line);color:var(--ink)}.contact-section input,.contact-section textarea{border-bottom-color:#d5d6de;color:var(--ink)}.contact-section input:focus,.contact-section textarea:focus{border-color:#85883f}.contact-section ::placeholder{color:#8b8c92}