:root { --page:#f5f5f7; --ink:#1d1d1f; --muted:#6e6e73; --line:#d2d2d7; --accent:#1d1d1f; --radius:8px; --button-height:48px; --header-height:80px; font-family:"PingFang SC","Microsoft YaHei UI","Segoe UI",sans-serif; color:var(--ink); background:var(--page); font-synthesis:none; }
* { box-sizing:border-box; letter-spacing:0; }
body { margin:0; min-width:320px; background:var(--page); font-size:16px; line-height:1.5; }
button,input { font:inherit; letter-spacing:0; }
button,a,input { -webkit-tap-highlight-color:transparent; }
button,a { touch-action:manipulation; }
a { color:var(--ink); text-decoration:none; }
a:hover { text-decoration:underline; text-underline-offset:4px; }
button { color:inherit; cursor:pointer; }
:focus-visible { outline:2px solid var(--ink); outline-offset:5px; }
[hidden] { display:none !important; }
.site-header { height:var(--header-height); background:#ffffff; border-bottom:1px solid var(--line); position:relative; z-index:2; }
.header-inner { height:100%; max-width:1200px; margin:0 auto; display:flex; align-items:center; gap:40px; }
.brand { display:inline-flex; align-items:center; gap:10px; white-space:nowrap; text-decoration:none; }
.brand:hover { text-decoration:none; }
.brand img { display:block; width:32px; height:32px; }
.brand-name { font-size:20px; font-weight:600; line-height:1.3; }
.brand-latin { color:var(--muted); font-size:13px; margin-left:1px; padding-top:3px; }
.desktop-nav { display:flex; align-items:center; gap:28px; margin-left:auto; }
.desktop-nav a { font-size:14px; color:var(--muted); }
.header-actions { display:flex; align-items:center; gap:24px; margin-left:16px; font-size:14px; }
.login-short { display:none; }
.menu-toggle { display:none; border:0; background:transparent; padding:10px; width:40px; height:40px; }
.menu-toggle span { display:block; width:20px; height:1px; margin:5px auto; background:var(--ink); }
.mobile-nav { position:absolute; top:100%; left:0; right:0; padding:18px 24px 24px; border-bottom:1px solid var(--line); background:#ffffff; }
.mobile-nav a { display:block; padding:12px 0; font-size:14px; }
.hero { min-height:calc(100svh - var(--header-height)); max-width:1200px; margin:0 auto; padding-top:156px; padding-bottom:100px; }
.hero-copy { width:600px; max-width:100%; }
.hero h1 { font-size:60px; font-weight:600; line-height:1.15; margin:0; }
.hero-lead { font-size:20px; font-weight:400; line-height:1.6; color:var(--muted); margin:28px 0 0; }
.lead-opening,.lead-detail { display:block; }
.phrase { display:inline-block; white-space:nowrap; }
.hero-actions { display:flex; align-items:center; gap:28px; margin-top:36px; }
.primary { display:inline-flex; justify-content:center; align-items:center; min-height:var(--button-height); height:var(--button-height); padding:0 26px; border:0; border-radius:var(--radius); background:var(--accent); color:#ffffff; font-size:16px; font-weight:500; line-height:1; box-shadow:none; }
.primary:hover { text-decoration:none; }
.hero-actions > a:not(.primary) { font-size:16px; }
.auth-header .header-inner { justify-content:space-between; }
.return-link { font-size:14px; }
.auth-layout { min-height:calc(100svh - var(--header-height)); display:flex; flex-direction:column; max-width:1200px; margin:0 auto; }
.auth-panel { width:400px; max-width:100%; margin:104px 0 64px 160px; }
.environment { margin:0 0 24px; color:var(--muted); font-size:12px; line-height:18px; }
.auth-panel h1 { font-size:36px; font-weight:600; line-height:1.25; margin:0; }
.auth-subtitle { margin:12px 0 32px; font-size:16px; color:var(--muted); line-height:1.6; }
.auth-form { margin:0; }
.field { margin-bottom:24px; }
.field label { display:block; font-size:14px; margin-bottom:10px; }
.input-wrap { position:relative; }
.field input { display:block; width:100%; height:52px; padding:0 15px; border:1px solid var(--line); border-radius:var(--radius); color:var(--ink); background:#ffffff; outline-offset:3px; box-shadow:none; font-size:16px; }
.field input::placeholder { color:var(--muted); opacity:1; }
.password-input { padding-right:92px !important; }
.password-toggle { position:absolute; top:0; right:5px; height:52px; padding:0 12px; border:0; background:transparent; font-size:13px; color:var(--muted); }
.auth-submit { width:100%; margin-top:4px; }
.account-links { display:flex; flex-direction:column; align-items:flex-start; gap:16px; margin-top:24px; font-size:14px; }
.account-links p { margin:0; color:var(--muted); }
.account-links p a { margin-left:4px; }
.forgot { color:var(--muted); }
.auth-footer { margin:auto 0 26px 160px; color:var(--muted); font-size:12px; line-height:1.6; }
.form-status { font-size:13px; line-height:1.6; margin:20px 0 0; color:var(--muted); }
.preview-dialog { max-width:calc(100% - 48px); width:420px; padding:28px; background:var(--page); color:var(--ink); border:1px solid var(--line); border-radius:var(--radius); box-shadow:none; }
.preview-dialog::backdrop { background:rgba(0,0,0,.22); }
.preview-dialog h2 { font-size:22px; margin:0 0 14px; font-weight:600; }
.preview-dialog p { font-size:15px; line-height:1.7; color:var(--muted); margin:0; }
.dialog-close { border:0; border-bottom:1px solid var(--ink); background:transparent; margin-top:24px; padding:4px 0; font-size:14px; }
body[data-theme="b"] .header-inner { max-width:none; margin:0 64px; }
body[data-theme="b"] .desktop-nav { gap:32px; }
body[data-theme="b"] .hero { max-width:none; padding:64px 24px; display:flex; justify-content:center; align-items:center; text-align:center; }
body[data-theme="b"] .hero-copy { width:760px; }
body[data-theme="b"] .hero-lead { font-size:19px; max-width:760px; margin:24px auto 0; }
body[data-theme="b"] .hero-actions { justify-content:center; margin-top:32px; }
body[data-theme="b"] .auth-layout { align-items:center; }
body[data-theme="b"] .auth-panel { width:420px; margin:92px 0 64px; }
body[data-theme="b"] .auth-panel h1 { font-size:32px; font-weight:500; }
body[data-theme="b"] .auth-footer { margin-left:0; text-align:center; }
body[data-theme="c"] .header-inner { max-width:none; margin:0 64px; }
body[data-theme="c"] .brand-latin { font-size:14px; color:var(--ink); }
body[data-theme="c"] .hero { max-width:none; margin:0 64px; padding-top:112px; }
body[data-theme="c"] .hero-copy { width:640px; }
body[data-theme="c"] .hero-lead { line-height:1.55; margin-top:18px; }
body[data-theme="c"] .hero-actions { margin-top:36px; }
body[data-theme="c"] .auth-panel { width:420px; margin-top:82px; margin-left:104px; }
body[data-theme="c"] .auth-panel h1 { font-size:40px; }
body[data-theme="c"] .auth-footer { margin-left:104px; }
@media (max-width:1280px) and (min-width:761px) {
 .header-inner { margin:0 48px; gap:24px; }
 .hero { margin:0 80px; }
 .desktop-nav { gap:20px; }
 .header-actions { gap:20px; margin-left:0; }
 .auth-layout { padding:0 48px; }
 .auth-panel { margin-left:80px; }
 .auth-footer { margin-left:80px; }
 body[data-theme="b"] .header-inner,body[data-theme="c"] .header-inner { margin:0 40px; }
 body[data-theme="b"] .desktop-nav { gap:24px; }
}
@media (max-width:1000px) and (min-width:761px) {
 .brand-latin { display:none; }
 .desktop-nav { gap:16px !important; }
 .header-inner { margin:0 28px !important; gap:22px; }
 .header-actions { gap:16px; }
}
@media (max-width:760px) {
 :root { --header-height:72px; }
 .header-inner,body[data-theme="b"] .header-inner,body[data-theme="c"] .header-inner { margin:0 24px; gap:20px; }
 .brand img { width:30px; height:30px; }
 .brand-name,.brand-latin,.desktop-nav,.header-consult,.login-long { display:none; }
 .header-actions { margin-left:auto; gap:16px; font-size:14px; }
 .login-short { display:inline; }
 .menu-toggle { display:block; margin-right:-10px; }
 .hero { margin:0 24px; padding-top:112px; padding-bottom:72px; }
 .hero-copy { width:100%; }
 .hero h1 { font-size:48px; }
 .hero-lead { font-size:18px; line-height:1.65; margin-top:24px; }
 .hero-actions { gap:24px; margin-top:32px; }
 .hero-actions > a:not(.primary),.primary { font-size:15px; }
 .primary { padding:0 24px; }
 body[data-theme="b"] .hero { margin:0; padding:64px 24px; }
 body[data-theme="b"] .hero h1 { font-size:44px; }
 body[data-theme="b"] .hero-lead { font-size:18px; line-height:1.65; margin-top:24px; }
 body[data-theme="b"] .hero-actions { gap:24px; }
 body[data-theme="c"] .hero { margin:0 24px; padding-top:80px; }
 body[data-theme="c"] .hero h1 { font-size:60px; }
 body[data-theme="c"] .hero-lead { font-size:18px; line-height:1.6; margin-top:18px; }
 body[data-theme="c"] .hero-actions { margin-top:32px; }
 .auth-layout { padding:0 24px; min-height:calc(100svh - var(--header-height)); }
 .auth-panel,body[data-theme="b"] .auth-panel,body[data-theme="c"] .auth-panel { width:100%; margin:72px 0 48px; }
 .environment { margin-bottom:24px; }
 .auth-panel h1 { font-size:32px; }
 body[data-theme="c"] .auth-panel h1 { font-size:36px; }
 .auth-subtitle { font-size:15px; margin-bottom:32px; }
 .field { margin-bottom:22px; }
 .auth-footer,body[data-theme="b"] .auth-footer,body[data-theme="c"] .auth-footer { margin:auto 0 24px; text-align:left; }
 body[data-theme="b"] .auth-panel { margin-top:84px; }
 body[data-theme="c"] .auth-panel { margin-top:60px; }
}
@media (prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto !important; } }

/* A3/B3 final content systems */
a,summary,button{cursor:pointer}a{display:inline-flex;align-items:center;min-height:44px}select,textarea{font:inherit;color:var(--ink)}
.content-section{padding:96px 0;scroll-margin-top:24px}.section-inner{width:calc(100% - 80px);max-width:1120px;margin:0 auto}.content-section h2{font-size:38px;line-height:1.2;font-weight:600;margin:0 0 24px}.content-section h3{font-size:20px;line-height:1.5;font-weight:600;margin:0 0 14px}.content-section p,.content-section dd,.content-section li{font-size:17px;line-height:1.7}.content-section p{margin:0 0 24px}.section-lead{max-width:700px;color:var(--muted);font-size:21px!important;line-height:1.6!important;margin-bottom:48px!important}.two-col,.three-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;margin:40px 0}.three-col{grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}.three-col p{max-width:29em}.content-section ul{padding:0;list-style:none;margin:24px 0}.content-section dt{font-size:18px;font-weight:600;margin-bottom:12px}.content-section dd{margin:0;color:var(--muted)}.text-link{font-size:16px;text-decoration:underline;text-underline-offset:5px;line-height:1.5}.links{display:flex;gap:32px;flex-wrap:wrap}.small{font-size:14px!important;color:var(--muted);margin:20px 0 0!important}.question{font-size:22px!important}.scenario{padding-top:12px}.process-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px;list-style:none;padding:0;counter-reset:step;margin:48px 0 28px}.process-list li{counter-increment:step}.process-list li:before{content:counter(step);display:block;font-size:20px;color:var(--muted);margin-bottom:20px}.process-list span{font-size:14px;color:var(--muted)}.faq-list{max-width:840px}.faq-list details{border-top:1px solid var(--line);padding:24px 0}.faq-list details:last-child{border-bottom:1px solid var(--line)}.faq-list summary{font-size:18px;font-weight:600;min-height:44px;line-height:1.5}.faq-list p{color:var(--muted);margin:16px 0 0;max-width:42em}.company-footer{border-top:1px solid var(--line);padding:40px max(40px,calc((100vw - 1120px)/2));font-size:12px;color:var(--muted)}.company-footer strong{color:var(--ink);font-size:16px;font-weight:600}.company-footer p{margin:14px 0 8px}.company-footer a{font-size:13px}
#brief-form{max-width:800px;margin-top:40px}#brief-form label{display:block;font-size:16px;line-height:1.6;margin-bottom:24px}#brief-form input:not([type=checkbox]),#brief-form select,#brief-form textarea{display:block;width:100%;margin-top:10px;min-height:48px;padding:12px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;font-size:16px}#brief-form textarea{resize:vertical}#brief-form .form-pair{display:grid;grid-template-columns:1fr 1fr;gap:24px}.brief-options{border-top:1px solid var(--line);padding-top:24px;margin-bottom:24px}.brief-options summary{min-height:44px;margin-bottom:20px;font-size:17px}.lead-consent{display:flex!important;align-items:flex-start;gap:12px;min-height:44px}.lead-consent input{margin-top:6px;width:18px;height:18px;flex-shrink:0;accent-color:var(--ink)}.submit-actions{display:flex;flex-wrap:wrap;gap:24px;align-items:center}.local-brief{background:none;border:0;font-size:14px;min-height:44px;padding:0;text-decoration:underline;text-underline-offset:4px}.form-help{font-size:14px!important;color:var(--muted)}
body[data-theme=a] .content-section{padding:0 0 96px}body[data-theme=a] .section-inner{background:white;padding:48px;border:1px solid var(--line);border-radius:18px}body[data-theme=a] #platform{padding-top:32px}body[data-theme=a] .three-col article+article{border-left:1px solid var(--line);padding-left:28px}body[data-theme=a] #solutions .section-inner,body[data-theme=a] #process .section-inner{background:transparent;border:0;padding-top:0;padding-bottom:0}body[data-theme=a] .scenario{border-top:1px solid var(--line);padding-top:32px}
body[data-theme=b] .content-section{border-top:1px solid var(--line);text-align:center}body[data-theme=b] .content-section:nth-of-type(even){background:#f8f9fa}body[data-theme=b] .content-section h2{font-weight:500}body[data-theme=b] .content-section h3,body[data-theme=b] .content-section dt{font-weight:500}body[data-theme=b] .section-lead{margin-left:auto;margin-right:auto;max-width:38em}body[data-theme=b] .links{justify-content:center}body[data-theme=b] .two-col,body[data-theme=b] .three-col{gap:48px}body[data-theme=b] .faq-list,body[data-theme=b] #brief-form{margin-left:auto;margin-right:auto}body[data-theme=b] .faq-list p{margin-left:auto;margin-right:auto}body[data-theme=b] .submit-actions{justify-content:center}body[data-theme=b] .company-footer{background:#f8f9fa;text-align:center}body[data-theme=b] #brief-form{text-align:center}body[data-theme=b] .lead-consent{justify-content:center}body[data-theme=b] .hero{padding:64px 24px;justify-content:center}
.auth-layout{align-items:center;padding:80px 24px 0}.auth-panel{width:432px;margin:0 0 48px!important;padding:36px;background:#fff;border:1px solid var(--line);border-radius:18px}.auth-footer{margin:auto 0 28px!important;font-size:12px;text-align:center}body[data-theme=b] .auth-layout{padding-top:112px}body[data-theme=b] .auth-panel{border:0;border-radius:0;padding:0;width:400px}.auth-panel h1{margin-top:0}.environment{display:none}.auth-subtitle{font-size:16px}.account-links{display:none}
@media(max-width:760px){
.header-inner,body[data-theme=b] .header-inner{margin:0 20px;gap:12px}.brand-name{display:inline;font-size:18px}.brand-latin{display:none}.header-actions{gap:12px}.header-consult{display:none!important}.menu-toggle{width:44px;height:44px}.hero{margin:0 24px;padding-top:112px;min-height:calc(100svh - 72px)}.hero-copy{width:100%}.hero-actions{gap:22px}.hero-lead .phrase{white-space:normal}.hero-lead .lead-detail .phrase:first-child{white-space:nowrap;font-size:18px}.content-section{padding:72px 0}.section-inner{width:calc(100% - 40px)}.content-section h2{font-size:30px;margin-bottom:20px}.content-section h3{font-size:18px}.content-section p,.content-section li,.content-section dd{font-size:16px}.section-lead{font-size:18px!important;margin-bottom:32px!important}.two-col,.three-col,.process-list{grid-template-columns:1fr;gap:32px;margin:32px 0}.content-section dt{font-size:17px}.links{gap:16px}.content-section .small{margin-top:16px!important}.question{font-size:20px!important}.faq-list summary{font-size:17px}.company-footer{padding:32px 24px}.company-footer a{font-size:12px}#brief-form .form-pair{grid-template-columns:1fr;gap:0}#brief-form label{font-size:16px}.submit-actions{gap:16px}.submit-actions .primary{width:100%}body[data-theme=a] .content-section{padding-bottom:72px}body[data-theme=a] #platform{padding-top:24px}body[data-theme=a] .section-inner{padding:28px 24px}body[data-theme=a] #solutions .section-inner,body[data-theme=a] #process .section-inner{padding-left:4px;padding-right:4px}body[data-theme=a] .three-col article+article{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:28px}body[data-theme=b] .two-col,body[data-theme=b] .three-col{gap:40px}body[data-theme=b] .hero{padding:64px 24px;margin:0}.auth-layout{padding:48px 20px 0}.auth-panel{width:100%;padding:28px 24px;margin-bottom:40px!important}.auth-subtitle{font-size:16px}.auth-footer{max-width:100%;font-size:12px}body[data-theme=b] .auth-layout{padding:84px 24px 0}body[data-theme=b] .auth-panel{width:100%}body[data-theme=b] .auth-footer{margin:auto 0 24px!important}.field input{min-width:0}}

/* Official A3: complete white cards and Chinese phrase wrapping. */
body[data-theme=a] #solutions .section-inner,body[data-theme=a] #process .section-inner{background:#fff;border-radius:18px;padding:48px}
body{word-break:keep-all;line-break:strict;overflow-wrap:break-word}input,textarea,select{font:inherit;max-width:100%}.hero-lead .phrase{display:inline;white-space:normal!important}.hero-lead .lead-detail{display:block}.keep{white-space:nowrap}
.hero-lead .phrase{display:inline-block;max-width:100%}.hero-lead .phrase:last-child{white-space:nowrap!important}
.skip{position:absolute;left:20px;top:-80px;background:#fff;padding:12px;z-index:10}.skip:focus{top:10px}.primary,.btn{min-height:48px;border-radius:8px;padding:12px 24px;display:inline-flex;align-items:center;justify-content:center;background:#1d1d1f;color:#fff;border:1px solid #1d1d1f;font:inherit;cursor:pointer}.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;flex-shrink:0}.brand img{filter:brightness(0)}.lead-receipt{padding:24px;background:#f5f5f7;border-radius:8px;margin-top:24px}.brief-actions{display:flex;gap:16px;flex-wrap:wrap}.form-help{margin-top:12px}.process-list{list-style:decimal;padding-left:24px}.process-list li::before{display:none!important}.process-list li{padding-left:8px}.content-section :is(article,dd,li){min-width:0}
@media(max-width:760px){body[data-theme=a] #solutions .section-inner,body[data-theme=a] #process .section-inner{padding:28px 24px}.hero-lead{font-size:20px!important}.hero-lead .lead-detail .phrase:first-child{font-size:20px!important;white-space:normal!important}.brief-actions{flex-direction:column}}