@charset "UTF-8";
:root{--ink:#24283f;--muted:#686d83;--primary:#5b4ee5;--line:#e7e8f0;--surface:#f8f9fd;--radius:24px;color-scheme:light;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);font-synthesis:none;line-height:1.75;background:var(--surface)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0}a{color:inherit;text-decoration:none}a:focus-visible{outline:3px solid #7467ef;outline-offset:5px;border-radius:5px}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.35;letter-spacing:-.035em}h1{font-size:clamp(34px,4vw,54px);font-weight:750}h2{font-size:clamp(24px,2.4vw,32px)}h3{font-size:20px}p{overflow-wrap:anywhere}.container{width:min(1160px,calc(100% - 64px));margin:0 auto}.site-header{background:#fff;border-bottom:1px solid var(--line)}.nav-row{min-height:88px;display:flex;justify-content:space-between;align-items:center;gap:24px}.brand{font-size:22px;font-weight:750;display:flex;align-items:center;gap:11px;letter-spacing:.02em;overflow-wrap:anywhere}.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:12px;background:var(--primary);color:white;font-size:24px;flex-shrink:0}.brand-mark svg{width:23px;height:23px}.brand-logo{display:block;width:36px;height:36px;border-radius:12px;object-fit:contain;background:var(--primary-50);border:1px solid var(--line);flex-shrink:0}.nav-links{display:flex;gap:28px;align-items:center;font-size:14px}.nav-links>a:not(.button):hover,.site-footer a:hover{color:var(--primary)}.button{display:inline-flex;justify-content:center;align-items:center;gap:14px;min-height:52px;padding:12px 24px;background:var(--primary);border:1px solid var(--primary);border-radius:13px;color:#fff;font-weight:650;font-size:15px;transition:background .2s,transform .2s}.button:hover{background:#493cce;transform:translateY(-1px)}.button.secondary{background:#fff;color:var(--ink);border-color:#dedeea}.button.secondary:hover{background:#f0eefc;border-color:#bdb5f2}.button.small{min-height:42px;padding:8px 17px;font-size:14px}.skip-link{position:absolute;left:15px;top:-80px;background:#fff;padding:12px;z-index:20}.skip-link:focus{top:10px}.hero{display:grid;grid-template-columns:1.08fr 1fr;gap:42px;align-items:center;min-height:550px;padding:62px 0 56px}.hero-copy h1{max-width:560px;margin:22px 0;line-height:1.3}.eyebrow{font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.12em;display:flex;align-items:center;gap:8px}.live-dot{width:7px;height:7px;border-radius:50%;background:#45ab90}.lead{font-size:17px;line-height:1.95;color:var(--muted);max-width:690px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.hero-note{font-size:12px;letter-spacing:.12em;color:#8b8ea3;margin-top:22px}.hero-art{height:400px;position:relative;background:radial-gradient(ellipse at 50% 45%,#e6e1fc 0%,#eeeafa70 45%,transparent 70%)}.orbit{position:absolute;border:1px solid #e2def3;width:330px;height:330px;border-radius:50%;left:70px;top:38px}.orbit-two{width:408px;height:408px;left:32px;top:0}.art-note{position:absolute;right:8px;top:0;font-size:13px;font-weight:650;color:#6f658f;transform:rotate(6deg)}.art-note span{display:block;font-size:10px;font-weight:400;color:#a69dbd;margin-top:3px}.art-report{position:absolute;top:65px;left:26px;width:350px;background:#ffffffed;padding:25px 28px;border:1px solid #fff;border-radius:23px;box-shadow:0 24px 55px #6457a41c;transform:rotate(-5deg)}.art-heading{display:flex;align-items:center;gap:13px;font-weight:700;font-size:16px}.art-heading small{display:block;font-size:10px;color:#9692ad;margin-top:4px;font-weight:400;letter-spacing:.06em}.art-icon{display:grid;place-items:center;width:45px;height:45px;border-radius:14px;background:#edeafd;color:var(--primary);font-size:27px}.art-bars{height:133px;display:flex;align-items:flex-end;justify-content:space-between;border-bottom:1px solid #efedf7;margin-top:25px;padding-bottom:8px}.art-bars i{height:30%;width:22px;border-radius:6px 6px 2px 2px;background:#d4cef5}.art-bars i:nth-child(2){height:45%}.art-bars i:nth-child(3){height:40%}.art-bars i:nth-child(4){height:67%;background:#b4a9ed}.art-bars i:nth-child(5){height:59%}.art-bars i:nth-child(6){height:88%;background:#7663dc}.art-bars i:nth-child(7){height:76%;background:#b4a9ed}.art-tags{display:flex;gap:12px;margin-top:18px}.art-tags span{background:#eef6f2;border-radius:6px;padding:3px 12px;color:#548774;font-size:10px}.art-tags span+span{background:#f2eefc;color:#8675b0}.art-float{display:flex;align-items:center;gap:14px;position:absolute;bottom:10px;right:0;background:#fff;padding:18px 24px;border-radius:16px;box-shadow:0 15px 40px #61569a17;transform:rotate(4deg);font-size:14px;font-weight:650}.art-float>span{display:grid;place-items:center;width:36px;height:36px;border-radius:12px;background:#e8f5ee;color:#589a7d;font-size:23px}.art-float small{display:block;color:#9395a6;font-size:10px;letter-spacing:.06em;font-weight:400;margin-top:3px}.value-strip{display:grid;grid-template-columns:repeat(3,1fr);padding:26px 0 32px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);gap:24px}.value-strip>div{display:grid;grid-template-columns:38px 1fr;column-gap:15px;align-items:center}.value-strip span{grid-row:span 2;color:#aaa3d0;font-size:14px;border:1px solid #e3dff4;border-radius:50%;width:36px;height:36px;display:grid;place-items:center}.value-strip h2{font-size:16px;font-weight:650;letter-spacing:0}.value-strip p{font-size:12px;color:var(--muted);margin-top:3px}.content-section{padding:62px 0}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:28px}.section-heading h2{margin-top:10px}.section-heading>p{font-size:13px;color:var(--muted)}.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.tool-card{padding:27px;background:#fff;border:1px solid var(--line);border-radius:19px;position:relative;transition:box-shadow .2s,border-color .2s}.tool-card:hover{border-color:#cac3f1;box-shadow:0 12px 32px #51468e09}.tool-card h3{font-size:19px;margin:18px 0 10px}.tool-card h3 a:hover{color:var(--primary)}.tool-card>p{font-size:14px;line-height:1.85;color:var(--muted);min-height:52px}.tool-symbol{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;background:#f0edfc;border:1px solid #e5dff8;border-radius:13px;color:#8a79c0;font-size:12px;letter-spacing:.08em}.tone-2 .tool-symbol{background:#edf6f2;color:#629780;border-color:#dfede5}.tone-3 .tool-symbol{background:#fff4e9;color:#b99057;border-color:#f4e7d7}.text-link{font-size:13px;font-weight:600;color:var(--primary);display:flex;align-items:center;gap:12px;margin-top:23px}.guide-banner{display:flex;align-items:center;justify-content:space-between;gap:30px;background:linear-gradient(120deg,#eeebfc,#f0f4fd);border:1px solid #e3dff6;border-radius:22px;padding:35px 40px;margin:0 0 50px}.guide-banner h2{font-size:27px;margin:10px 0}.guide-banner p:not(.eyebrow){color:var(--muted);font-size:14px}.site-footer{border-top:1px solid var(--line);background:#fff;padding:32px 0}.footer-row{display:flex;justify-content:space-between;gap:24px;align-items:center}.footer-row strong{font-size:16px}.footer-row p{font-size:12px;color:#9598a9;margin-top:3px}.footer-row nav{display:flex;gap:28px;font-size:13px;color:var(--muted)}.breadcrumbs{padding-top:28px;font-size:12px;color:#8b8ea3;display:flex;flex-wrap:wrap;gap:12px}.breadcrumbs a:hover{color:var(--primary)}.page-intro{padding:38px 0 42px}.page-intro h1{font-size:clamp(29px,3.6vw,43px);margin:14px 0 20px}.page-intro .lead{max-width:850px}.reading-grid{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:26px;align-items:start;margin-bottom:40px}.paper{background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px}.paper h2{font-size:23px;margin:0 0 16px}.paper h2:not(:first-child){margin-top:28px}.paper p{font-size:15px;color:#60667d;line-height:1.95;margin:12px 0}.prose section+section{margin-top:34px;padding-top:30px;border-top:1px solid #f0f0f6}.reading-aside{position:sticky;top:24px}.reading-aside .paper{padding:23px}.reading-aside nav{display:grid;gap:12px;font-size:13px;margin:18px 0 26px;color:#6a6c83}.reading-aside nav a:hover{color:var(--primary)}.reading-aside .button{width:100%;font-size:13px;min-height:45px;padding:10px}.paper .small-note{font-size:11px;color:#9295a5;line-height:1.8}.steps{padding-left:26px;margin:0;font-size:15px;color:#60667d}.steps li{padding-left:8px;margin:0 0 18px}.steps li::marker{color:var(--primary);font-weight:700}.faq-item{margin-top:23px}.faq-item h3{font-size:16px;letter-spacing:0}.faq-item p{font-size:14px}.contact-card .pill{background:#eeebfb;color:var(--primary);padding:5px 11px;border-radius:9px;font-size:12px;display:inline-block;margin-bottom:18px}.contact-card .contact-value{font-size:16px;color:var(--ink);font-weight:650}.contact-card .button{width:100%;font-size:13px}.related-section{margin:45px 0}.related-section>h2{font-size:25px;margin-bottom:23px}.updated{font-size:12px;color:#8d90a2;margin:28px 0 40px}.preview-bar{background:#f2e4bf;color:#6a5022;text-align:center;padding:8px;font-size:13px}.error-page{padding-top:100px;padding-bottom:100px}.error-page h1{margin:20px 0}.error-page .button{margin-top:24px}
@media(max-width:1000px){.hero{gap:15px;min-height:490px}.hero-art{transform:scale(.82);transform-origin:center right;margin-left:-70px}.hero-copy h1{font-size:42px}.nav-links{gap:17px}.tool-card{padding:23px}.reading-grid{grid-template-columns:minmax(0,1fr) 230px}.guide-banner{padding:30px}}
@media(max-width:760px){.container{width:calc(100% - 36px)}.nav-row{min-height:76px;gap:12px;flex-wrap:wrap;padding-top:16px;padding-bottom:14px}.brand{font-size:19px}.nav-links{display:flex;flex-wrap:wrap;gap:8px;width:100%;font-size:12px;align-items:stretch}.nav-links>a:not(.button){flex:1 1 0;min-width:0;justify-content:center;text-align:center;line-height:1.45;overflow-wrap:anywhere;padding:4px 2px}.nav-links>.button{flex:0 0 100%;width:100%;min-height:40px;padding:7px 12px;font-size:12px}.hero{grid-template-columns:1fr;gap:12px;padding:38px 0 30px}.hero-copy h1{font-size:37px;max-width:490px;margin:17px 0}.lead{font-size:15px}.hero-actions{margin-top:24px}.hero-art{transform:none;margin:5px auto 0;width:min(390px,100%);height:325px}.art-report{width:290px;left:10px;top:47px;padding:21px}.art-bars{height:105px;margin-top:19px}.art-bars i{width:20px}.art-float{right:0;bottom:0;padding:14px 18px;font-size:12px}.art-note{font-size:11px;right:15px}.orbit{width:270px;height:270px;left:48px;top:32px}.orbit-two{width:320px;height:320px;left:23px;top:9px}.value-strip{gap:15px;padding:22px 0}.value-strip>div{grid-template-columns:1fr;gap:8px}.value-strip span{grid-row:auto;width:30px;height:30px;font-size:11px}.value-strip h2{font-size:13px}.value-strip p{font-size:11px;line-height:1.7;max-width:110px}.content-section{padding:37px 0}.section-heading{display:block;margin-bottom:22px}.section-heading>p{margin-top:12px}.section-heading br{display:none}.section-heading h2{font-size:26px}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.tool-card{padding:20px}.tool-card h3{font-size:17px;margin:14px 0 9px}.tool-card>p{font-size:12px;min-height:66px}.text-link{font-size:12px;margin-top:17px;gap:7px}.tool-symbol{width:35px;height:35px;border-radius:11px;font-size:10px}.guide-banner{display:block;padding:25px;border-radius:18px;margin-bottom:32px}.guide-banner h2{font-size:23px}.guide-banner>.button{margin-top:22px}.footer-row{align-items:start}.footer-row nav{flex-direction:column;gap:9px;font-size:12px}.page-intro{padding:30px 0}.page-intro h1{font-size:31px;margin:13px 0 16px}.reading-grid{grid-template-columns:1fr;gap:18px}.reading-aside{position:static;order:-1}.reading-aside .paper{padding:17px}.reading-aside nav{display:flex;flex-wrap:wrap;gap:8px 16px;margin:12px 0 0}.reading-aside .button,.reading-aside .small-note{display:none}.paper{padding:24px 21px;border-radius:16px}.paper h2{font-size:21px}.paper p,.steps{font-size:14px}.contact-card{order:-1}.contact-card .button{width:auto}.related-section>h2{font-size:22px}.updated{margin-bottom:27px}.button{min-height:48px;padding:10px 18px;font-size:14px}.hero-note{font-size:11px}}
@media(max-width:380px){.hero-copy h1{font-size:32px}.tool-card{padding:16px}.nav-links{gap:10px;font-size:11px}.hero-art{transform:scale(.9);transform-origin:top center;margin-bottom:-24px}.tool-card h3{font-size:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button,.tool-card{transition:none}.button:hover{transform:none}}

@media(max-width:520px){.tool-grid{grid-template-columns:1fr}.tool-card{padding:24px}.tool-card h3{font-size:19px}.tool-card>p{font-size:14px;min-height:0}.text-link{font-size:13px}.tool-symbol{width:38px;height:38px;font-size:11px}}

.category-nav{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 30px}.category-nav a{padding:8px 16px;border:1px solid var(--line);border-radius:24px;background:#fff;font-size:14px}.category-nav a:hover{border-color:var(--primary);color:var(--primary)}.tool-category+.tool-category{margin-top:38px}.category-heading{display:flex;align-items:center;gap:14px;margin-bottom:20px}.category-heading h2{font-size:23px}.category-heading span{font-size:12px;color:var(--muted)}@media(max-width:520px){.category-nav{gap:8px}.category-nav a{padding:6px 12px;font-size:12px}.category-heading h2{font-size:21px}}
.open-site-banner{display:flex;align-items:center;justify-content:space-between;gap:24px;margin:0 0 48px;padding:30px 36px;border:1px solid color-mix(in srgb,var(--primary) 20%,var(--line));border-radius:22px;background:color-mix(in srgb,var(--primary) 7%,#fff)}.open-site-banner h2{margin:8px 0}.open-site-banner p:not(.eyebrow){color:var(--muted);font-size:14px}@media(max-width:600px){.open-site-banner{display:block;padding:25px}.open-site-banner .button{margin-top:20px}}