:root{--blue:#1769f5;--blue-dark:#0c47b7;--blue-soft:#eaf3ff;--blue-pale:#f5f9ff;--ink:#10213a;--text:#53647b;--line:#dce7f5;--white:#fff;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--white);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.72}img{display:block;max-width:100%}a{color:inherit;text-decoration:none}button{font:inherit}.wrap{width:min(var(--max),calc(100% - 40px));margin:auto}.skip{position:fixed;left:20px;top:-80px;z-index:100;padding:10px 16px;color:#fff;background:var(--blue)}.skip:focus{top:16px}.topline{display:none}
.header{position:sticky;top:0;z-index:60;border-bottom:1px solid rgba(220,231,245,.9);background:rgba(255,255,255,.94);backdrop-filter:blur(16px)}.nav{width:min(var(--max),calc(100% - 40px));min-height:76px;margin:auto;display:grid;grid-template-columns:230px 1fr auto;align-items:center;gap:30px}.brand{display:flex;align-items:center;gap:11px;font-weight:900;line-height:1.1}.brand-mark{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;color:#fff;background:var(--blue);font-size:18px}.brand small{display:block;margin-top:5px;color:#91a0b4;font-size:8px;letter-spacing:.16em}.nav-links{display:flex;justify-content:center;gap:30px;font-size:13px;font-weight:700}.nav-links a{padding:25px 0 22px;border-bottom:3px solid transparent}.nav-links a:hover,.nav-links a.active{color:var(--blue);border-color:var(--blue)}.nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border:1px solid var(--blue);border-radius:8px;color:var(--blue);background:#fff;font-weight:800;transition:.16s}.nav-cta,.button.primary,.button.coral{color:#fff;background:var(--blue)}.nav-cta:hover,.button:hover{color:#fff;background:var(--blue-dark);border-color:var(--blue-dark);transform:translateY(-2px)}.button.light{color:var(--blue);background:#fff}.menu{display:none}
h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.14;letter-spacing:-.04em}h1{font-size:clamp(52px,6.8vw,88px)}h2{font-size:clamp(36px,4.4vw,58px)}h3{font-size:22px}.eyebrow{display:inline-block;margin-bottom:18px;color:var(--blue);font-size:11px;font-weight:900;letter-spacing:.15em}.lead{max-width:760px;color:var(--text);font-size:17px}
/* 首页：居中首屏 + 流程内容 */
.mast{position:relative;min-height:680px;display:flex;align-items:center;overflow:hidden;padding:90px 0 135px;background:linear-gradient(180deg,#f6faff 0%,#eaf3ff 100%)}.mast:before,.mast:after{content:"";position:absolute;border:1px solid #d3e5ff;border-radius:50%}.mast:before{width:520px;height:520px;left:-300px;top:-260px}.mast:after{width:420px;height:420px;right:-230px;bottom:-270px}.mast-watermark{position:absolute;left:50%;top:50%;width:520px;height:520px;opacity:.055;transform:translate(-50%,-47%) rotate(-7deg)}.mast-grid{position:relative;z-index:2;max-width:930px;margin:auto;text-align:center}.mast h1{margin:0 0 25px}.mast h1 span{display:block;color:var(--blue)}.mast-copy{max-width:760px;margin:auto}.mast-copy p{max-width:720px;margin:0 auto 32px;color:var(--text);font-size:18px}.mast-action-panel{width:max-content;max-width:100%;display:flex;align-items:center;margin:auto;padding:8px;border:1px solid #cfe0f7;border-radius:14px;background:rgba(255,255,255,.9)}.mast-actions{display:flex;justify-content:center;gap:8px}.mast-actions .button{min-height:54px;border-color:transparent;background:transparent}.mast-actions .button:first-child{color:#fff;background:var(--blue)}.mast-actions .button:last-child:hover{color:var(--blue);background:var(--blue-soft)}.mast-code{display:flex;justify-content:center;gap:8px;margin-top:25px;color:#8191a7;font-size:11px;letter-spacing:.12em}
.data-strip{position:relative;z-index:4;width:min(1050px,calc(100% - 40px));display:grid;grid-template-columns:repeat(4,1fr);margin:-54px auto 0;overflow:hidden;border:1px solid var(--line);border-radius:16px;background:#fff}.data-strip a{min-height:108px;padding:23px;border-right:1px solid var(--line)}.data-strip a:last-child{border-right:0}.data-strip b{display:block;margin-bottom:13px;color:var(--blue);font-size:10px;letter-spacing:.12em}.data-strip span{font-size:14px;font-weight:800}.data-strip a:hover{background:var(--blue-pale)}
.index-block{padding:100px 0}.index-block:nth-of-type(even){background:var(--blue-pale)}.block-intro{max-width:820px;margin:0 auto 54px;text-align:center}.block-intro h2{margin:0 0 20px}.block-intro p{margin:0;color:var(--text)}
.reason-list{position:relative;width:min(920px,100%);margin:auto}.reason-list:before{content:"";position:absolute;left:29px;top:24px;bottom:24px;width:2px;background:#c8dcfb}.reason-row{position:relative;display:grid;grid-template-columns:60px 1fr 130px;gap:24px;align-items:center;padding:25px 0}.reason-row .no{position:relative;z-index:1;width:60px;height:60px;display:grid;place-items:center;border-radius:50%;color:#fff;background:var(--blue);font-size:13px;font-weight:900}.reason-row h3{margin:0 0 8px}.reason-row p{margin:0;color:var(--text);font-size:14px}.text-link{color:var(--blue);font-size:12px;font-weight:900;text-align:right}
.scene-band{color:#fff;background:var(--blue)}.scene-band .index-block{background:transparent}.scene-board{display:grid;grid-template-columns:.78fr 1.22fr;gap:80px;align-items:start}.scene-board h2{margin:0;position:sticky;top:120px}.scene-list{border-top:1px solid rgba(255,255,255,.35)}.scene-row{display:grid;grid-template-columns:60px 1fr;gap:20px;padding:27px 0;border-bottom:1px solid rgba(255,255,255,.35)}.scene-row b{font-size:12px;letter-spacing:.12em}.scene-row h3{margin:0 0 6px}.scene-row p{margin:0;color:#dce8ff;font-size:14px}
.matrix{width:min(1040px,100%);margin:auto;overflow:hidden;border:1px solid var(--line);border-radius:14px;background:#fff}.matrix-head,.matrix-row{display:grid;grid-template-columns:1fr 1.45fr 1.15fr .75fr}.matrix-head{color:#fff;background:var(--blue);font-size:11px;font-weight:900}.matrix-head span,.matrix-row>*{padding:17px 20px;border-right:1px solid var(--line)}.matrix-head span:last-child,.matrix-row>*:last-child{border-right:0}.matrix-row{border-bottom:1px solid var(--line)}.matrix-row:last-child{border-bottom:0}.matrix-row strong{font-size:15px}.matrix-row span{color:var(--text);font-size:13px}.matrix-row a{color:var(--blue);font-size:12px;font-weight:900}
.reading-list{width:min(960px,100%);margin:auto;border-top:1px solid var(--line)}.reading-item{display:grid;grid-template-columns:140px 1fr 130px;gap:24px;align-items:center;padding:27px 0;border-bottom:1px solid var(--line)}.reading-item small{color:var(--blue);font-weight:900}.reading-item h3{margin:0;font-size:24px}.reading-item a{color:var(--blue);text-align:right;font-size:12px;font-weight:900}
.question-list,.faq{width:min(900px,100%);margin:auto;border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 4px;border:0;color:var(--ink);background:transparent;text-align:left;font-weight:900;cursor:pointer}.faq-question i{font-style:normal;color:var(--blue);font-size:25px}.faq-answer{display:grid;grid-template-rows:0fr;transition:.22s}.faq-answer>div{overflow:hidden}.faq-answer p{padding:0 4px 22px;margin:0;color:var(--text);font-size:14px}.faq-item.open .faq-answer{grid-template-rows:1fr}.faq-item.open i{transform:rotate(45deg)}
.cta{padding:72px 0;background:var(--blue-soft)}.cta-box,.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:50px}.cta h2{max-width:780px;margin:0;font-size:clamp(32px,4vw,50px)}.cta .button{flex:none}.cta .eyebrow{display:block}
/* 栏目页 */
.page-hero{padding:90px 0 70px;background:linear-gradient(135deg,#f4f9ff,#e8f2ff)!important}.crumb{margin-bottom:35px;color:#7e8da2;font-size:11px}.crumb span{margin:0 9px}.page-hero h1{max-width:980px;margin:0 0 26px;font-size:clamp(48px,6vw,76px)}.section{padding:90px 0}.section.white{background:#fff}.section.navy{color:#fff;background:var(--blue)}.section-head{max-width:850px;margin:0 auto 50px;text-align:center}.section-head h2{margin:0 0 18px}.section-head p{margin:0;color:var(--text)}.navy .section-head p{color:#dce8ff}
.catalog{width:min(1040px,100%);margin:auto;border-top:1px solid var(--line)}.catalog-card{display:grid;grid-template-columns:130px 1fr 1fr 180px;gap:28px;align-items:start;padding:32px 0;border-bottom:1px solid var(--line)}.catalog-card .tag{color:var(--blue);font-size:11px;font-weight:900}.catalog-card h3{margin:0}.catalog-card p{margin:0;color:var(--text);font-size:14px}.catalog-card ul{margin:0;padding-left:18px;color:var(--text);font-size:13px}.catalog-card .button{grid-column:4;grid-row:1/span 2}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:steps}.step{min-height:250px;padding:28px;border:1px solid var(--line);border-radius:12px;background:#fff}.step:before{counter-increment:steps;content:"0" counter(steps);display:block;margin-bottom:55px;color:var(--blue);font-size:24px;font-weight:900}.step p{color:var(--text);font-size:13px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature-card{position:relative;min-height:320px;padding:30px;border:1px solid var(--line);border-radius:12px;background:#fff}.feature-card .num{display:block;margin-bottom:62px;color:var(--blue);font-size:24px;font-weight:900}.feature-card p{color:var(--text);font-size:13px}.feature-card a{position:absolute;left:30px;bottom:28px;color:var(--blue);font-size:12px;font-weight:900}
.use-layout,.choice-layout{display:grid;grid-template-columns:1fr 1fr;overflow:hidden;border:1px solid rgba(255,255,255,.28);border-radius:14px}.use-layout>*{padding:44px}.use-image{background:var(--blue-soft)}.use-list{border-top:1px solid rgba(255,255,255,.35)}.use-item{display:grid;grid-template-columns:55px 1fr;gap:18px;padding:23px 0;border-bottom:1px solid rgba(255,255,255,.35)}.use-item b{font-size:13px}.use-item h3{margin:0 0 6px}.use-item p{margin:0;color:#dce8ff;font-size:13px}.choice{padding:40px;background:#f5f9ff}.choice+ .choice{border-left:1px solid var(--line);background:#eaf3ff}.choice .label{color:var(--blue);font-size:11px;font-weight:900}
.article-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.article-card{display:grid;grid-template-columns:125px 1fr;overflow:hidden;border:1px solid var(--line);border-radius:12px;background:#fff}.article-card img{width:125px;height:100%;min-height:155px;object-fit:cover}.article-card .body{padding:22px}.article-card small{color:var(--blue);font-weight:900}.article-card h3{margin:5px 0 9px;font-size:20px}.article-card p{margin:0;color:var(--text);font-size:12px}.article-card a{color:var(--blue);font-size:12px;font-weight:900}.article-card.featured{grid-row:auto}.article-card.featured img{height:100%}.article-card.featured h3{font-size:22px}
/* 文章 */
.article-hero{padding:90px 0 48px;text-align:center;background:var(--blue-pale)}.article-shell{width:min(850px,calc(100% - 40px));margin:auto}.article-hero .crumb{text-align:left}.article-hero h1{margin:0 auto 25px;font-size:clamp(45px,6vw,70px)}.article-hero .lead{margin-left:auto;margin-right:auto}.article-meta{display:flex;justify-content:center;flex-wrap:wrap;gap:22px;color:#8190a3;font-size:11px;font-weight:700}.article-cover{width:min(1050px,calc(100% - 40px));height:430px;margin:42px auto 55px;border-radius:16px;object-fit:cover}.article-body{padding-bottom:95px;font-size:17px}.article-body h2{margin-top:52px;color:var(--ink);font-size:34px}.article-body h3{margin-top:34px}.article-body p,.article-body li{color:#3f5067}.article-body a{color:var(--blue);font-weight:800}.article-body blockquote,.notice{margin:30px 0;padding:24px 28px;border-left:4px solid var(--blue);border-radius:8px;background:var(--blue-soft)}.toc{display:grid;gap:8px;margin-bottom:40px;padding:26px;border-radius:12px;background:var(--blue-soft)}.toc strong{margin-bottom:5px}.toc a{color:var(--blue)}.author{display:flex;align-items:center;gap:15px;margin-top:55px;padding-top:25px;border-top:1px solid var(--line)}.author .avatar{width:50px;height:50px;display:grid;place-items:center;border-radius:12px;color:#fff;background:var(--blue);font-weight:900}.author p{margin:2px 0 0;font-size:12px}.legal{width:min(850px,calc(100% - 40px));margin:auto;padding:85px 0}.legal h1{font-size:58px}.legal h2{margin-top:40px;color:var(--blue);font-size:29px}
.footer{padding:64px 0 24px;color:#dce8f7;background:#0d2343}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:42px}.footer .brand{color:#fff}.footer .brand small{color:#758ba9}.footer-about p{max-width:350px;margin-top:20px;color:#8296b1;font-size:12px}.footer-col h3{color:#7fb0ff;font-size:13px}.footer-col a{display:block;margin:8px 0;color:#a8bad0;font-size:12px}.footer-bottom{display:flex;justify-content:space-between;gap:30px;margin-top:48px;padding-top:20px;border-top:1px solid #2e4565;color:#6f83a0;font-size:10px}.footer-bottom p{margin:0}
@media(max-width:960px){.nav{grid-template-columns:1fr auto}.nav-links,.nav-cta{display:none}.menu{display:block;width:44px;height:44px;border:1px solid var(--line);border-radius:8px;background:#fff}.menu span{display:block;width:20px;height:2px;margin:5px auto;background:var(--ink)}.nav.open .nav-links{position:absolute;left:0;right:0;top:76px;display:grid;gap:0;padding:10px 20px 18px;border-bottom:1px solid var(--line);background:#fff}.nav.open .nav-links a{padding:11px 0;border-bottom:1px solid var(--line)}.scene-board{grid-template-columns:1fr;gap:35px}.scene-board h2{position:static}.catalog-card{grid-template-columns:110px 1fr 1fr}.catalog-card .button{grid-column:2/span 2;grid-row:auto;width:max-content}.steps{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}.footer-col:last-child{display:none}}
@media(max-width:640px){.wrap,.article-shell,.legal{width:calc(100% - 28px)}.nav{width:calc(100% - 28px);min-height:68px}.nav.open .nav-links{top:68px}.brand-mark{width:38px;height:38px}.mast{min-height:auto;padding:74px 0 115px}.mast-watermark{left:50%;top:47%;width:340px;height:340px;opacity:.045;transform:translate(-50%,-50%) rotate(-7deg)}.mast h1{font-size:48px}.mast-copy p{font-size:16px}.mast-action-panel{width:100%;align-items:stretch}.mast-actions{width:100%;flex-direction:column}.mast-actions .button{width:100%;min-height:52px}.mast-code{font-size:9px}.data-strip{grid-template-columns:1fr 1fr;width:calc(100% - 28px)}.data-strip a{min-height:94px;padding:17px}.data-strip a:nth-child(2){border-right:0}.data-strip a:nth-child(-n+2){border-bottom:1px solid var(--line)}.index-block,.section{padding:70px 0}.block-intro{margin-bottom:38px}.block-intro h2{font-size:37px}.reason-row{grid-template-columns:48px 1fr;gap:16px}.reason-row .no{width:48px;height:48px}.reason-row .text-link{grid-column:2;text-align:left}.scene-board h2{font-size:38px}.matrix-head{display:none}.matrix-row{grid-template-columns:1fr}.matrix-row>*{border-right:0;border-bottom:1px solid var(--line)}.matrix-row>*:last-child{border-bottom:0}.reading-item{grid-template-columns:1fr;gap:7px}.reading-item a{text-align:left}.cta-box,.cta-inner{align-items:flex-start;flex-direction:column}.cta .button{width:100%}.section-head{text-align:left}.catalog-card{grid-template-columns:1fr;gap:14px}.catalog-card .button{grid-column:auto;width:100%}.steps,.card-grid,.article-grid{grid-template-columns:1fr}.use-layout,.choice-layout{grid-template-columns:1fr}.use-layout>*{padding:28px}.choice+ .choice{border-left:0;border-top:1px solid var(--line)}.page-hero{padding:62px 0 50px}.page-hero h1,.article-hero h1,.legal h1{font-size:43px}.article-cover{width:calc(100% - 28px);height:270px;margin:28px auto 40px}.article-body{font-size:16px}.article-card{grid-template-columns:95px 1fr}.article-card img{width:95px}.footer-grid{grid-template-columns:1fr 1fr}.footer-about{grid-column:span 2}.footer-bottom{flex-direction:column}}

/* 首屏三枚微信 Logo：独立展示，避免影响标题可读性 */
.logo-showcase{position:relative;width:min(430px,100%);min-height:126px;display:flex;align-items:flex-end;justify-content:center;gap:22px;margin:0 auto 26px;padding:15px 24px 11px}.logo-showcase:before{content:"";position:absolute;left:0;right:0;bottom:0;height:82px;border:1px solid #d9e7f8;border-radius:42px;background:rgba(255,255,255,.68)}.logo-scene{position:relative;z-index:1;display:grid;justify-items:center;gap:7px;color:#53647b;font-size:11px;font-weight:800;animation:logoFloatLeft 4.4s ease-in-out infinite}.logo-scene img{width:66px;height:66px;border:5px solid #fff;border-radius:18px;box-shadow:0 10px 24px rgba(23,105,245,.16)}.logo-scene-main{animation:logoFloatMain 3.8s ease-in-out infinite}.logo-scene-main img{width:88px;height:88px;border-radius:22px;box-shadow:0 13px 30px rgba(7,193,96,.22)}.logo-scene-three{animation:logoFloatRight 4.8s ease-in-out infinite}.logo-scene span{padding:2px 7px;border-radius:6px;background:rgba(255,255,255,.82)}
@keyframes logoFloatLeft{0%,100%{transform:translateY(1px) rotate(-5deg)}50%{transform:translateY(-8px) rotate(-2deg)}}
@keyframes logoFloatMain{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-10px) scale(1.035)}}
@keyframes logoFloatRight{0%,100%{transform:translateY(2px) rotate(5deg)}50%{transform:translateY(-7px) rotate(2deg)}}
@media(max-width:640px){.logo-showcase{width:100%;min-height:112px;gap:11px;padding-inline:10px}.logo-showcase:before{height:75px}.logo-scene{font-size:10px}.logo-scene img{width:56px;height:56px;border-width:4px;border-radius:15px}.logo-scene-main img{width:72px;height:72px;border-radius:18px}.mast-copy p{margin-bottom:24px}}
@media(prefers-reduced-motion:reduce){.logo-scene{animation:none}.nav-cta,.button{transition:none}}
@media(min-width:641px){.mast{min-height:590px;padding:44px 0 78px}.mast-copy p{margin-bottom:22px}.logo-showcase{min-height:112px;margin-bottom:14px}.mast-code{margin-top:14px}}
.mast-actions .button:only-child{width:240px;min-height:56px}
@media(max-width:640px){.mast-actions .button:only-child{width:100%;min-height:54px}}

/* 顶部改用图片 Logo，不再显示文字式品牌组合 */
.header .nav{grid-template-columns:120px 1fr auto}.header .brand{width:52px;height:52px;display:block;border-radius:13px;background:#00d66a url("../images/wechat-logo.png") center/cover no-repeat}.header .brand>*{display:none}.header .nav>.nav-cta:last-child{grid-column:3}

/* 当前栏目与按钮交互使用深色状态 */
.header .nav-links a{padding:10px 14px;border:0;border-radius:8px}.header .nav-links a:hover{color:var(--blue);background:var(--blue-soft)}.header .nav-links a.active{color:#fff;background:#0b3f9c;border:0}.nav-cta:active,.button:active{color:#fff;background:#082f78;border-color:#082f78;transform:translateY(0)}.nav-cta:focus-visible,.button:focus-visible,.nav-links a:focus-visible{outline:3px solid #9fc1ff;outline-offset:2px}.mast-actions .button:focus-visible{color:#fff;background:#0b3f9c;border-color:#0b3f9c}
@media(max-width:960px){.header .nav{grid-template-columns:1fr auto}.header .brand{width:44px;height:44px;border-radius:11px}.header .nav.open .nav-links a{padding:11px 12px}.header .nav.open .nav-links a.active{color:#fff;background:#0b3f9c}}

/* 品牌改为图片 Logo + 中文站名，不显示英文副标题 */
.header .nav{grid-template-columns:230px 1fr auto}.header .brand{width:210px;height:52px;display:flex;align-items:center;padding-left:64px;border-radius:0;background-color:transparent;background-size:52px 52px;background-position:left center}.header .brand>*{display:block}.header .brand>.brand-mark{display:none}.header .brand>span:not(.brand-mark){font-size:20px;font-weight:900;white-space:nowrap}.header .brand small{display:none}

/* 导航恢复文字与下划线选中，不使用深色块 */
.header .nav-links a{padding:25px 0 22px;border:0;border-bottom:3px solid transparent;border-radius:0;background:transparent}.header .nav-links a:hover,.header .nav-links a.active{color:var(--blue);background:transparent;border-bottom-color:var(--blue)}

/* 单一主按钮：悬停和按下始终使用更深的高亮色 */
.mast-actions .button:only-child{color:#fff;background:var(--blue);border-color:var(--blue)}.mast-actions .button:only-child:hover{color:#fff;background:#0b47b8;border-color:#0b47b8;box-shadow:0 8px 20px rgba(11,71,184,.22);transform:translateY(-2px)}.mast-actions .button:only-child:active{color:#fff;background:#072e76;border-color:#072e76;box-shadow:none;transform:translateY(0)}.mast-actions .button:only-child:focus-visible{color:#fff;background:#0b3f9c;border-color:#0b3f9c}

@media(max-width:960px){.header .nav{grid-template-columns:1fr auto}.header .brand{width:178px;height:44px;padding-left:54px;background-size:44px 44px}.header .brand>span:not(.brand-mark){font-size:18px}.header .nav.open .nav-links a{padding:11px 4px;border-radius:0}.header .nav.open .nav-links a.active{color:var(--blue);background:transparent;border-bottom-color:var(--blue)}}

/* 删除首屏小标题后同步收紧上下留白 */
@media(min-width:641px){.mast{min-height:550px;padding:36px 0 66px}}
@media(max-width:640px){.mast{padding:48px 0 96px}}