*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:80px}body{margin:0;background:#f3f3f1;color:#121316;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","Microsoft YaHei",sans-serif;line-height:1.7;transition:background .35s,color .35s}.wrap{width:min(1080px,calc(100% - 44px));margin:auto}.nav{height:70px;position:fixed;top:0;left:0;right:0;z-index:50;padding:0 max(22px,calc((100vw - 1080px)/2));display:flex;align-items:center;justify-content:space-between;background:#f3f3f1e8;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid #dddeda}.logo{font-size:20px;font-weight:900;color:inherit;text-decoration:none;letter-spacing:-.06em}.logo span,h1 span{color:#777}.nav nav{display:flex;gap:30px}.nav nav a{font-size:13px;color:inherit;text-decoration:none;position:relative;padding:8px 0}.nav nav a:after{content:"";position:absolute;left:0;right:100%;bottom:2px;height:1px;background:currentColor;transition:right .25s}.nav nav a.active:after{right:0}.nav nav a.active{font-weight:700}.nav nav a:hover:after,.nav nav a:focus-visible:after{right:0}.theme{border:1px solid #d6d7d4;background:transparent;border-radius:50%;width:36px;height:36px;cursor:pointer;color:inherit;transition:.25s}.theme:hover{transform:rotate(18deg);background:#e9e9e6}.scrollbar{position:fixed;z-index:100;top:0;left:0;height:3px;width:0;background:#111}.hero{min-height:780px;padding-top:150px;padding-bottom:120px;display:grid;grid-template-columns:1fr 330px;align-items:center;gap:70px}.label,.section-title span{font-size:10px;letter-spacing:.18em;color:#888;font-weight:800}.hero h1{font-size:clamp(64px,11vw,120px);line-height:.95;letter-spacing:-.08em;margin:20px 0}.hero-sub{font-size:20px;color:#686a70;line-height:1.7}.hero-actions{display:flex;align-items:center;gap:24px;margin-top:35px}.text-link{color:inherit;text-decoration:none;font-size:14px;border-bottom:1px solid #aaa;padding:6px 0 7px;display:inline-flex;align-items:center;gap:7px;transition:opacity .25s}.text-link:hover{opacity:.65}.text-link span{display:inline-block;transition:transform .25s}.text-link:hover span{transform:translateY(4px)}.mini-links{margin-top:55px;display:flex;gap:13px;color:#888;font-size:12px;letter-spacing:.08em}.mini-links i{font-style:normal}.hero-mark{display:grid;place-items:center}.mark{font-size:150px;font-weight:900;letter-spacing:-.12em;line-height:.8;transform:rotate(-8deg);user-select:none}.mark span{color:#777}.hero-mark p{font-size:9px;letter-spacing:.3em;color:#999}.section{padding:115px 0}.section-title{display:flex;gap:22px;align-items:baseline;margin-bottom:45px}.section-title h2{font-size:48px;letter-spacing:-.05em;margin:0}.about{display:grid;grid-template-columns:1.35fr .65fr;gap:70px}.about-main{max-width:680px}.about-main .big{font-size:28px;line-height:1.4;color:#17181b;margin-top:0}.about-main p:not(.big),.skill p,.project p{color:#707279}.about-side{border-top:1px solid #d8d9d6}.about-side div{display:flex;justify-content:space-between;padding:18px 0;border-bottom:1px solid #d8d9d6;gap:20px}.about-side small{color:#96989d}.about-side strong{font-size:12px;text-align:right}.about-side a{color:inherit;text-decoration:none}.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#5f9b66;margin-right:4px;vertical-align:1px}.skills{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #d8d9d6}.skill{padding:28px 20px 15px 0;border-bottom:1px solid #d8d9d6;transition:transform .3s}.skill:hover{transform:translateY(-4px)}.skill b{font-size:10px;color:#999}.skill h3{font-size:21px;margin:24px 0 7px}.skill p{font-size:13px;margin:0}.project-list{border-top:1px solid #d8d9d6}.project{display:grid;grid-template-columns:70px 1fr 35px;gap:20px;align-items:center;padding:30px 5px;border-bottom:1px solid #d8d9d6;transition:padding .3s,background .3s}.project:hover{padding-left:16px;background:#eaeae7}.project:focus-within{background:#eaeae7}.project>span:first-child{font-size:11px;color:#999}.project h3{margin:9px 0 2px;font-size:23px}.project p{margin:0;font-size:13px}.project-arrow{font-size:22px;color:inherit!important;transition:transform .25s}.project:hover .project-arrow{transform:translate(3px,-3px)}.tags{display:flex;gap:8px;flex-wrap:wrap}.tags em{font-style:normal;font-size:8px;letter-spacing:.12em;color:#888;border:1px solid #d7d8d5;padding:2px 6px;border-radius:20px}.quote-section{padding:140px 0;border-top:1px solid #d8d9d6;border-bottom:1px solid #d8d9d6;display:flex;justify-content:space-between;align-items:end}.quote-section p{font-size:clamp(50px,8vw,92px);line-height:.85;letter-spacing:-.07em;margin:0}.quote-section strong{color:#777}.quote-section span{color:#888;font-size:13px}.contact-card{background:#121316;color:#fff;border-radius:28px;padding:60px clamp(25px,7vw,80px);overflow:hidden}.contact-card h2{font-size:clamp(45px,7vw,76px);line-height:1.02;letter-spacing:-.06em;margin:20px 0 35px}.contact-card h2 span{color:#777}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 30px;margin-top:55px;border-top:1px solid #ffffff20}.contact-grid>a,.wechat-row{min-width:0;padding:20px 0;color:#fff;text-decoration:none;border-bottom:1px solid #ffffff20;display:flex;align-items:center;gap:13px}.contact-grid a:hover{opacity:.78}.contact-grid a:focus-visible,.copy-btn:focus-visible,.theme:focus-visible,.text-link:focus-visible,.nav nav a:focus-visible{outline:2px solid currentColor;outline-offset:5px;border-radius:4px}.contact-icon{width:24px;flex:0 0 24px;font-size:16px;text-align:center;color:#aaa}.contact-grid small{display:block;color:#777;font-size:9px;letter-spacing:.15em;margin-bottom:5px}.contact-grid a span:nth-child(2),.wechat-row>span:nth-child(2){min-width:0;overflow-wrap:anywhere}.contact-grid a b{margin-left:auto;font-weight:400;color:#888}.copy-btn{margin-left:auto;border:1px solid #ffffff30;background:transparent;color:#aaa;border-radius:999px;padding:5px 10px;font-size:11px;cursor:pointer;flex:0 0 auto}.copy-btn:hover{color:#fff;border-color:#ffffff70}.wechat-row{color:#fff}.toast{position:fixed;left:50%;bottom:25px;z-index:80;transform:translate(-50%,15px);opacity:0;pointer-events:none;background:#121316;color:#fff;padding:9px 15px;border-radius:999px;font-size:12px;transition:.25s}.toast.show{opacity:1;transform:translate(-50%,0)}footer{padding:20px 0 40px;border-top:1px solid #d8d9d6;display:flex;justify-content:space-between;color:#999;font-size:11px}.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s ease,transform .8s ease}.reveal.show{opacity:1;transform:none}.late{transition-delay:.14s}@media(max-width:760px){.nav{box-shadow:0 1px 12px rgba(0,0,0,.03)}.wrap{width:min(100% - 32px,600px)}.nav{height:62px;padding:0 16px}.nav nav{display:none}.hero{min-height:auto;padding-top:118px;padding-bottom:80px;grid-template-columns:1fr;gap:35px}.hero h1{font-size:clamp(64px,20vw,82px)}.hero-sub{font-size:18px}.hero-mark{justify-content:start;min-height:150px}.mark{font-size:105px}.section{padding:78px 0}.section-title{gap:16px;margin-bottom:35px}.section-title h2{font-size:38px}.about{grid-template-columns:1fr;gap:40px}.about-main .big{font-size:24px}.about-side div{align-items:flex-start}.about-side strong{max-width:62%;overflow-wrap:anywhere}.skills{grid-template-columns:1fr 1fr}.skill{padding:24px 15px 15px 0}.skill h3{font-size:19px;margin-top:18px}.quote-section{display:block;padding:105px 0}.quote-section span{display:block;margin-top:30px}.contact-card{border-radius:22px;padding:42px 22px}.contact-card h2{font-size:clamp(40px,12vw,56px)}.contact-grid{grid-template-columns:1fr;margin-top:40px}.contact-grid>a,.wechat-row{padding:17px 0}.contact-grid a span:nth-child(2),.wechat-row>span:nth-child(2){font-size:14px}footer{flex-direction:column;gap:8px;padding-bottom:28px}}@media(max-width:390px){.hero h1{font-size:61px}.skills{grid-template-columns:1fr}.section{padding:65px 0}.section-title h2{font-size:34px}.contact-card h2{font-size:38px}.copy-btn{padding:4px 8px}}@media(max-width:760px){.hero-mark{order:2}.hero-text{order:1}.mini-links{margin-top:42px}.project{grid-template-columns:42px 1fr 24px;gap:12px}.project:hover{padding-left:5px}.skill:hover{transform:none}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{transition:none;transform:none}.project,.project-arrow,.text-link span,.theme{transition:none}}body.dark{background:#0c0d10;color:#f2f3f4}body.dark .nav{background:#0c0d10e8;border-color:#292b30}body.dark .theme{border-color:#3a3c42}body.dark .theme:hover{background:#17191e}body.dark .hero-sub,body.dark .about-main p:not(.big),body.dark .skill p,body.dark .project p{color:#a1a4ab}body.dark .about-side,body.dark .about-side div,body.dark .skills,body.dark .skill,body.dark .project-list,body.dark .project,body.dark footer{border-color:#292b30}body.dark .project:hover{background:#16181d}body.dark .contact-card{background:#f0f1ef;color:#111}body.dark .contact-grid a,body.dark .wechat-row{color:#111;border-color:#1112}body.dark .contact-grid small{color:#777}body.dark .contact-icon,body.dark .contact-grid a b{color:#777}body.dark .copy-btn{color:#555;border-color:#1114}body.dark .toast{background:#f0f1ef;color:#111}

/* v5.2 visual refinement */
:root{--line:#d8d9d6;--muted:#888b91;--accent:#121316}
.section-title{position:relative;padding-bottom:14px}
.section-title:after{content:"";position:absolute;left:0;bottom:0;width:46px;height:1px;background:#b9bab7;transform-origin:left;transition:width .6s cubic-bezier(.2,.8,.2,1)}
.section-title:hover:after{width:110px}
.section-title span{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;letter-spacing:.08em;color:#55585d;min-width:28px}
.hero .label{display:inline-flex;align-items:center;gap:10px}
.hero .label:before{content:"";width:24px;height:1px;background:#aaa;display:inline-block}
.hero h1{position:relative;text-wrap:balance}
.hero h1:after{content:"";position:absolute;left:2px;bottom:-14px;width:72px;height:1px;background:#c4c5c2;animation:lineIn 1.2s .35s both cubic-bezier(.2,.8,.2,1)}
.hero-sub{max-width:620px}
.hero-mark{position:relative}
.hero-mark:before{content:"";position:absolute;width:190px;height:190px;border:1px solid #d7d8d5;border-radius:50%;opacity:.55;animation:orbit 14s linear infinite}
.hero-mark:after{content:"";position:absolute;width:9px;height:9px;border-radius:50%;background:#a9aaa7;transform:translate(90px,-90px);animation:orbitDot 8s ease-in-out infinite}
.mark{position:relative;z-index:1;transition:transform .7s cubic-bezier(.2,.8,.2,1)}
.hero-mark:hover .mark{transform:rotate(-5deg) scale(1.035)}
.skills{grid-template-columns:repeat(4,minmax(0,1fr));border-top:0;gap:1px;background:var(--line);padding:1px}
.skill{position:relative;min-height:220px;padding:34px 25px 28px;border:0;background:#f3f3f1;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden;transform:translateY(0);transition:transform .6s cubic-bezier(.2,.8,.2,1),background .5s,box-shadow .5s}
.skill:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 0%,rgba(255,255,255,.95),transparent 55%);opacity:0;transition:opacity .5s}
.skill:after{content:"";position:absolute;top:0;left:50%;width:0;height:2px;background:#8c8e91;transform:translateX(-50%);transition:width .55s cubic-bezier(.2,.8,.2,1)}
.skill:hover{transform:translateY(-8px);background:#fafaf8;box-shadow:0 18px 45px rgba(18,19,22,.08);z-index:2}
.skill:hover:before{opacity:1}.skill:hover:after{width:70px}
.skill b,.skill h3,.skill p{position:relative;z-index:1}
.skill b{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;letter-spacing:.16em;color:#85878b}
.skill h3{font-size:22px;margin:18px 0 9px;letter-spacing:-.04em}.skill p{max-width:190px;font-size:12px;line-height:1.8}
.skill.reveal{transition:opacity .8s ease,transform .8s cubic-bezier(.2,.8,.2,1),background .5s,box-shadow .5s;transition-delay:calc(var(--i,0) * 90ms)}
.skill.reveal.show{transform:none}.skill.reveal.show:hover{transform:translateY(-8px)}
.project-list{border-top:0;display:grid;gap:1px;background:var(--line);padding:1px}
.project{background:#f3f3f1;border-bottom:0;min-height:150px;padding:30px 32px;transition:transform .55s cubic-bezier(.2,.8,.2,1),background .4s,box-shadow .4s,padding .4s}
.project:hover{transform:translateX(8px);padding-left:38px;background:#fafaf8;box-shadow:0 14px 35px rgba(18,19,22,.07);z-index:2}
.project>span:first-child{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.project h3{letter-spacing:-.04em}.project-arrow{transition:transform .5s cubic-bezier(.2,.8,.2,1)}
.project:hover .project-arrow{transform:translate(6px,-6px) scale(1.08)}
.tags em{background:transparent;transition:background .3s,color .3s,border-color .3s}.project:hover .tags em{background:#121316;color:#fff;border-color:#121316}
.quote-section{position:relative;overflow:hidden}.quote-section:after{content:"";position:absolute;right:8%;top:18%;width:120px;height:120px;border:1px solid #d4d5d2;border-radius:50%;animation:floatRing 7s ease-in-out infinite}
.contact-card{position:relative;box-shadow:0 22px 70px rgba(18,19,22,.09)}
.contact-card:before{content:"";position:absolute;width:280px;height:280px;border:1px solid #ffffff12;border-radius:50%;right:-100px;top:-100px;animation:floatRing 9s ease-in-out infinite}
.contact-card h2{position:relative;z-index:1}.contact-grid{position:relative;z-index:1}
.contact-grid>a,.wechat-row{transition:padding-left .35s,background .35s,opacity .35s}.contact-grid>a:hover{padding-left:10px;opacity:1;background:#ffffff08}
footer span:last-child{letter-spacing:.04em}
@keyframes lineIn{from{width:0;opacity:0}to{width:72px;opacity:1}}
@keyframes orbit{to{transform:rotate(360deg)}}
@keyframes orbitDot{0%,100%{transform:translate(90px,-90px)}50%{transform:translate(-90px,90px)}}
@keyframes floatRing{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-10px) rotate(8deg)}}
@media(max-width:760px){
  .section-title{padding-bottom:12px}.section-title:after{width:34px}.section-title:hover:after{width:70px}
  .skills{grid-template-columns:1fr 1fr;gap:1px}.skill{min-height:190px;padding:25px 15px}.skill h3{font-size:19px}
  .project{min-height:132px;padding:25px 20px}.project:hover{transform:translateX(4px);padding-left:24px}
  .hero-mark:before{width:150px;height:150px}.hero-mark:after{transform:translate(70px,-70px)}
  .quote-section:after{right:-30px;top:30%;width:100px;height:100px}
}
@media(max-width:390px){.skills{grid-template-columns:1fr}.skill{min-height:165px}.skill p{max-width:240px}.project{padding:23px 15px}.project:hover{padding-left:19px}}
@media(prefers-reduced-motion:reduce){.hero-mark:before,.hero-mark:after,.hero h1:after,.quote-section:after,.contact-card:before{animation:none}.skill.reveal{transition:none}.skill.reveal.show:hover,.skill:hover{transform:none}.project:hover{transform:none}}
body.dark{--line:#292b30;--muted:#a1a4ab;--accent:#f2f3f4}
body.dark .section-title span{color:#a1a4ab}body.dark .section-title:after{background:#55585e}
body.dark .hero-mark:before,body.dark .quote-section:after{border-color:#303238}body.dark .hero-mark:after{background:#777}
body.dark .skills,body.dark .project-list{background:#292b30}body.dark .skill,body.dark .project{background:#101216}body.dark .skill:hover,body.dark .project:hover{background:#17191e;box-shadow:0 18px 45px rgba(0,0,0,.22)}body.dark .skill:before{background:radial-gradient(circle at 50% 0%,rgba(255,255,255,.05),transparent 55%)}body.dark .skill:after{background:#777}
body.dark .project:hover .tags em{background:#f2f3f4;color:#111;border-color:#f2f3f4}body.dark .contact-card{box-shadow:0 22px 70px rgba(0,0,0,.28)}
.hero-mark .mark{translate:var(--mx,0) var(--my,0)}