:root{--ink:#101431;--ink-2:#181c42;--paper:#f7f6fb;--white:#fff;--muted:#6a6c82;--line:#e5e3ee;--coral:#ff6e61;--violet:#7558f5;--violet-soft:#f0edff;--sky:#80e0df;--shadow:0 18px 48px rgba(19,24,67,.12);--radius:20px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.72}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input{font:inherit}.site-header{background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:relative;z-index:20}.header-inner{max-width:1200px;margin:auto;min-height:76px;padding:0 24px;display:flex;align-items:center;gap:26px}.brand{display:inline-flex;align-items:center;gap:10px;min-width:max-content}.site-avatar{width:40px;height:40px;border-radius:13px;object-fit:cover;object-position:77% center}.brand-lockup{display:grid;grid-template-columns:22px auto;grid-template-rows:23px 14px;align-items:center;line-height:1}.brand-mark{width:21px;height:21px;border-radius:7px;display:grid;place-items:center;grid-row:1/3;background:linear-gradient(135deg,var(--coral),var(--violet));color:#fff;font-size:11px}.brand strong{font-family:Georgia,"Times New Roman",serif;font-size:21px;letter-spacing:-1px}.brand small{font-size:8px;letter-spacing:1.7px;color:var(--muted)}.main-nav{display:flex;align-items:center;gap:19px;margin-left:auto}.main-nav a{font-size:14px;font-weight:700;color:#53556b;padding:24px 0;position:relative}.main-nav a:hover,.main-nav a.is-active{color:var(--violet)}.main-nav a.is-active:after{content:"";height:3px;border-radius:3px;background:var(--coral);position:absolute;left:0;right:0;bottom:0}.header-cta,.button{display:inline-flex;align-items:center;justify-content:center;font-weight:800;border-radius:999px;transition:transform .2s,box-shadow .2s,background .2s}.header-cta{padding:9px 16px;background:var(--ink);color:#fff;font-size:13px}.header-cta:hover,.button:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(16,20,49,.18)}.menu-toggle{display:none;border:0;background:none;font-size:23px;color:var(--ink);margin-left:auto}.search-shell{max-width:1200px;margin:auto;padding:0 24px 16px;display:flex;align-items:center;gap:16px}.search-label{font-size:13px;color:var(--muted);font-weight:700;white-space:nowrap}.search-box{height:40px;flex:1;border-radius:12px;background:#f2f1f7;display:flex;align-items:center;padding-left:13px;gap:8px;border:1px solid transparent}.search-box:focus-within{background:#fff;border-color:#b2a7ff;box-shadow:0 0 0 3px rgba(117,88,245,.12)}.search-box input{background:transparent;flex:1;min-width:0;border:0;outline:0;color:var(--ink);font-size:13px}.search-box button{height:32px;margin-right:4px;border:0;border-radius:9px;background:var(--violet);color:#fff;font-size:12px;font-weight:800;padding:0 15px;cursor:pointer}.search-note{margin:0;font-size:12px;color:var(--muted);white-space:nowrap}.hero{min-height:610px;position:relative;overflow:hidden;background:var(--ink);isolation:isolate}.hero-image{position:absolute;width:100%;height:100%;object-fit:cover;object-position:center}.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,12,37,.96) 0%,rgba(10,14,44,.84) 36%,rgba(13,17,47,.2) 72%,rgba(13,17,47,.1) 100%)}.hero-content,.inner-hero-content{max-width:1200px;margin:auto;padding:108px 24px;position:relative;color:#fff}.hero-content{max-width:1200px}.hero-content>*{max-width:600px}.hero-kicker,.eyebrow{color:var(--coral);font-weight:900;letter-spacing:1.7px;text-transform:uppercase;font-size:12px;margin:0 0 12px}.hero h1,.inner-hero h1{font-family:Georgia,"Songti SC",serif;letter-spacing:-2px;line-height:1.13;font-size:clamp(41px,5vw,66px);margin:0 0 20px}.hero-content>p:not(.hero-kicker){font-size:18px;line-height:1.9;color:#e7e8f4;margin:0 0 30px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.button{padding:12px 22px;font-size:14px}.primary{color:#fff;background:linear-gradient(110deg,var(--coral),#f65f95)}.ghost{border:1px solid rgba(255,255,255,.55);color:#fff}.secondary{background:var(--ink);color:#fff}.hero-data{display:flex;gap:28px;margin-top:60px;padding-top:20px;border-top:1px solid rgba(255,255,255,.25);font-size:12px;color:#d5d6e5}.hero-data strong{display:block;color:#fff;font-size:20px}.trust-strip{background:#fff0ec;padding:14px 24px;text-align:center;color:#50445a;font-size:14px}.trust-strip p{margin:0}.section{max-width:1200px;margin:0 auto;padding:84px 24px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:32px;margin-bottom:29px}.section-heading>div p{margin-bottom:8px}.section h2{font-family:Georgia,"Songti 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solid rgba(255,255,255,.8);border-radius:50%;display:grid;place-items:center;background:rgba(16,20,49,.48);backdrop-filter:blur(5px);color:#fff;padding-left:3px;opacity:0;transition:.25s}.video-card:hover .play-button,.video-card:focus-within .play-button{opacity:1;transform:translate(-50%,-50%) scale(1)}.video-length{position:absolute;right:9px;bottom:8px;background:rgba(11,14,32,.75);color:#fff;padding:2px 6px;border-radius:5px;font-size:11px;font-weight:700}.video-info{padding:17px}.video-info .eyebrow{font-size:10px;letter-spacing:1px;margin-bottom:6px}.video-info h3{font-size:16px;line-height:1.45;margin:0 0 8px}.video-info>p:not(.eyebrow){font-size:12px;color:var(--muted);margin:0;line-height:1.65}.video-meta{display:flex;gap:10px;flex-wrap:wrap;color:#77798b;font-size:11px;margin:13px 0 10px}.tag-row{display:flex;gap:5px;flex-wrap:wrap}.tag-row b{font-weight:700;padding:2px 7px;background:var(--violet-soft);color:#6250bb;border-radius:5px;font-size:10px}.split-section{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center;background:#fff;max-width:none;padding-left:max(24px,calc((100% - 1152px)/2));padding-right:max(24px,calc((100% - 1152px)/2))}.split-section>div{max-width:560px}.split-section>div>p:not(.eyebrow){color:var(--muted)}.check-list{padding:0;margin:27px 0;list-style:none}.check-list li{position:relative;padding:8px 0 8px 26px;font-size:14px}.check-list li:before{content:"✓";position:absolute;left:0;color:var(--coral);font-weight:bold}.feature-figure{margin:0;border-radius:var(--radius);overflow:hidden;background:var(--ink);box-shadow:var(--shadow)}.feature-figure img{width:100%;aspect-ratio:3/2;object-fit:cover}.feature-figure figcaption{padding:13px 16px;color:#dadbeb;font-size:12px}.dark-section{max-width:none;background:var(--ink);color:#fff;padding-left:max(24px,calc((100% - 1152px)/2));padding-right:max(24px,calc((100% - 1152px)/2))}.dark-section .section-heading>p{color:#c3c5d7}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.feature-grid article{border:1px solid rgba(255,255,255,.16);border-radius:15px;padding:25px;background:rgba(255,255,255,.045)}.feature-icon{font-size:23px;font-weight:900;color:var(--sky);display:block;margin-bottom:34px}.feature-grid h3{font-size:17px;line-height:1.45;margin:0 0 9px}.feature-grid p{margin:0;font-size:13px;color:#c7c9d7;line-height:1.7}.community-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.community-tile{border-radius:18px;padding:25px 22px;min-height:255px;display:flex;flex-direction:column;align-items:start;background:#fff;border:1px solid var(--line)}.community-tile h3{font-size:19px;line-height:1.4;margin:0 0 12px}.community-tile p{font-size:13px;color:#5e6074;margin:0}.community-tile 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var(--line);border-radius:10px;font-weight:900;color:#636476;font-family:Georgia}.testimonial-section{background:#fff;max-width:none;padding-left:max(24px,calc((100% - 1152px)/2));padding-right:max(24px,calc((100% - 1152px)/2))}.testimonial-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.testimonial-grid blockquote{margin:0;padding:22px;border:1px solid var(--line);border-radius:15px;background:var(--paper)}.testimonial-grid blockquote p{font-size:15px;margin:0 0 15px}.testimonial-grid cite{font-size:12px;color:var(--muted);font-style:normal}.faq-section{max-width:930px}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:0 4px}summary{cursor:pointer;list-style:none;font-size:16px;font-weight:800;padding:20px 32px 20px 0;position:relative}summary:after{content:"+";position:absolute;right:4px;font-size:25px;line-height:1;top:17px;color:var(--violet);font-weight:400}details[open] summary:after{content:"−"}details 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a:hover{color:#fff}.inner-hero.compact{height:300px}.inner-intro{max-width:870px;text-align:center}.inner-intro>p:not(.eyebrow){color:var(--muted);max-width:780px;margin:17px auto}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-top:33px}.stat-grid div{border:1px solid var(--line);background:#fff;border-radius:14px;padding:18px}.stat-grid strong{display:block;color:var(--violet);font-size:22px}.stat-grid span{font-size:12px;color:var(--muted)}.contact-page{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:center}.contact-card{padding:28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.contact-card h2{font-size:29px}.contact-card h2 small{font-size:12px;color:var(--coral);font-family:inherit}.contact-card>p:not(.eyebrow){font-size:14px;color:var(--muted)}dl{margin:25px 0 0;display:grid;grid-template-columns:100px 1fr;gap:10px;font-size:14px}dt{font-weight:800}dd{margin:0;color:var(--muted)}.share-row{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}.share-row button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:10px 18px;cursor:pointer;font-weight:800;color:var(--ink)}.share-row button:hover{color:var(--violet);border-color:var(--violet)}.share-feedback{color:var(--muted);font-size:13px}.site-footer{background:#0c0f29;color:#d2d4e3;padding:55px max(24px,calc((100% - 1152px)/2)) 21px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1fr;gap:40px;padding-bottom:38px}.footer-brand{color:#fff}.site-footer p{font-size:12px;line-height:1.8}.site-footer h2{font-size:14px;color:#fff;margin:4px 0 14px}.site-footer section>a:not(.brand){display:block;font-size:12px;margin:7px 0;color:#d2d4e3}.update{color:var(--sky)!important}.qr-wrap{display:flex;gap:10px}.qr-code{width:58px;height:58px;background-color:#fff;border:5px solid #fff;background-image:linear-gradient(90deg,#101431 22%,transparent 22%,transparent 45%,#101431 45%,#101431 61%,transparent 61%),linear-gradient(#101431 21%,transparent 21%,transparent 39%,#101431 39%,#101431 68%,transparent 68%),linear-gradient(45deg,transparent 30%,#101431 30%,#101431 55%,transparent 55%);background-size:12px 12px,11px 11px,16px 16px;box-shadow:inset 0 0 0 3px #fff}.qr-code.business{filter:hue-rotate(30deg)}.qr-caption{margin-top:8px!important;color:#989bb5}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:18px;display:flex;justify-content:space-between;gap:20px}.footer-bottom p{margin:0}.footer-bottom a:hover{color:var(--sky)}@media(max-width:1000px){.main-nav{gap:12px}.header-cta{display:none}.video-grid,.community-grid,.expert-grid,.testimonial-grid{grid-template-columns:repeat(2,1fr)}.feature-grid{grid-template-columns:repeat(2,1fr)}.logo-wall{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}.split-section{gap:35px}.hero-content{padding-top:82px}.search-note{display:none}}@media(max-width:680px){.header-inner{min-height:65px;padding:0 16px}.site-avatar{width:33px;height:33px}.brand strong{font-size:18px}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:65px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 20px;box-shadow:0 16px 25px rgba(0,0,0,.07)}.main-nav.open{display:grid}.main-nav a{padding:11px 0}.main-nav a.is-active:after{bottom:5px}.search-shell{padding:0 16px 11px;display:block}.search-label{display:none}.search-box{height:38px}.search-note{display:block;margin:6px 2px 0;font-size:10px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.hero{min-height:560px}.hero-image{object-position:67% center}.hero-shade{background:linear-gradient(90deg,rgba(8,12,37,.96),rgba(10,14,44,.76) 63%,rgba(13,17,47,.12))}.hero-content,.inner-hero-content{padding:61px 22px}.hero h1,.inner-hero h1{letter-spacing:-1px}.hero-content>p:not(.hero-kicker){font-size:15px;line-height:1.78}.hero-data{gap:16px;margin-top:43px}.hero-data strong{font-size:17px}.trust-strip{font-size:12px;padding:12px 18px}.section{padding:57px 18px}.section-heading{display:block;margin-bottom:23px}.section-heading>p{margin-top:10px}.section-heading .text-link{display:inline-block;margin-top:13px}.video-grid,.community-grid,.expert-grid,.testimonial-grid,.feature-grid,.steps,.stat-grid{grid-template-columns:1fr}.video-grid{gap:13px}.video-card{display:grid;grid-template-columns:42% 58%}.video-thumb{height:100%;aspect-ratio:auto}.video-info{padding:14px}.video-info h3{font-size:14px}.video-info>p:not(.eyebrow){display:none}.video-meta{gap:7px;margin:8px 0}.split-section,.contact-page{grid-template-columns:1fr}.split-section{padding-left:18px;padding-right:18px;gap:27px}.dark-section,.expert-section,.howto-section,.testimonial-section{padding-left:18px;padding-right:18px}.feature-grid article{padding:20px}.feature-icon{margin-bottom:16px}.community-tile{min-height:190px}.expert-grid article{padding:19px}.expert-avatar{margin-bottom:15px}.logo-wall{grid-template-columns:repeat(2,1fr)}.contact-banner{margin:0 18px 57px;padding:30px 25px;display:block}.contact-banner h2{font-size:26px}.contact-banner .button{margin-top:22px}.inner-hero{height:315px}.inner-hero.compact{height:275px}.inner-hero-content{padding-top:48px}.breadcrumbs{margin-bottom:18px}.inner-intro{padding-top:50px;padding-bottom:50px}.stat-grid{margin-top:23px}.contact-page{gap:25px}.footer-grid{grid-template-columns:1fr;gap:28px}.footer-bottom{display:block}.footer-bottom p+p{margin-top:5px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.video-card,.video-thumb img,.button{transition:none}}

/* SEO / EEAT content governance modules */
.method-grid,.policy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.method-card,.policy-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:25px;min-height:235px}.method-count{display:block;color:var(--coral);font-family:Georgia,"Songti SC",serif;font-size:31px;font-weight:700;line-height:1;margin-bottom:25px}.method-card h3,.policy-card h3{font-size:18px;line-height:1.45;margin:0 0 11px}.method-card p,.policy-card p{color:var(--muted);font-size:14px;line-height:1.8;margin:0}.content-callout{max-width:1152px;margin:0 auto 84px;padding:42px 48px;border-radius:20px;border:1px solid #ddd8ff;background:linear-gradient(115deg,#f0edff,#fff7f2);display:flex;gap:30px;align-items:center;justify-content:space-between}.content-callout h2{font-size:30px;margin:0 0 7px}.content-callout p:not(.eyebrow){max-width:730px;color:var(--muted);font-size:14px;margin:0}.partner-note{max-width:650px;margin:14px auto 0;color:var(--muted);font-size:13px}.governance-page{max-width:1000px}.governance-page>h2{margin-bottom:12px}.governance-intro{max-width:850px;color:var(--muted);margin:0 0 30px}.policy-grid{grid-template-columns:repeat(2,1fr)}.footer-tip{font-size:10px!important;color:#9598b1}.site-footer .footer-tip{margin-top:10px}@media(max-width:800px){.method-grid,.policy-grid{grid-template-columns:1fr}.method-card,.policy-card{min-height:0}.content-callout{margin:0 18px 57px;padding:30px 25px;display:block}.content-callout h2{font-size:26px}.content-callout .button{margin-top:22px}.governance-page{padding-top:54px;padding-bottom:54px}}