@font-face{font-family:'ZKX Sans';font-weight:400;font-style:normal;font-display:swap;src:url('../fonts/NotoSansSC-Regular.woff') format('woff')}
@font-face{font-family:'ZKX Sans';font-weight:500;font-style:normal;font-display:swap;src:url('../fonts/NotoSansSC-Medium.woff') format('woff')}
@font-face{font-family:'ZKX Sans';font-weight:700;font-style:normal;font-display:swap;src:url('../fonts/NotoSansSC-Bold.woff') format('woff')}

:root{--bg:#fff;--alt:#F5F7FA;--ink:#1D1D1F;--sub:#6E7681;--blue:#2F7BD8;--sky:#8EC5FF;--line:rgba(0,0,0,.08);--pad:max(6vw,22px);--font:'ZKX Sans',-apple-system,BlinkMacSystemFont,'SF Pro Display','PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul{margin:0}ul{padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
.grad{background:linear-gradient(135deg,#0B3A75 0%,#2F7BD8 55%,#8EC5FF 100%);-webkit-background-clip:text;background-clip:text;color:transparent}

/* 导航 */
.nav{position:fixed;left:0;right:0;top:0;z-index:100;height:52px;display:flex;justify-content:center;background:rgba(255,255,255,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--line);transition:background .5s,border-color .5s}
.nav .in{width:min(100%,1024px);padding:0 22px;display:flex;align-items:center;justify-content:space-between;font-size:13px}
.nav b{font-weight:600;font-size:15px;letter-spacing:.02em}
.nav ul{display:flex;gap:30px}
.nav li a{color:var(--ink);opacity:.72;transition:opacity .2s}.nav li a:hover,.nav li a.on{opacity:1}
.pill{display:inline-flex;align-items:center;gap:4px;padding:6px 14px;border-radius:999px;background:var(--blue);color:#fff;font-size:12.5px;transition:transform .25s,background .25s}.pill:hover{transform:scale(1.04);background:#1F6BC8}
body.dark .nav{background:rgba(11,16,24,.72);border-color:rgba(255,255,255,.1)}body.dark .nav b,body.dark .nav li a{color:#F5F5F7}

section{position:relative}
.wrap{width:min(100%,1080px);margin:0 auto;padding:0 var(--pad)}
.eyebrow{font-size:15px;font-weight:600;color:var(--blue);letter-spacing:.02em;margin-bottom:14px}
.h2{font-size:clamp(34px,6vw,64px);font-weight:700;letter-spacing:-.02em;line-height:1.12}
.rv{opacity:0;transform:translateY(40px) scale(.985);filter:blur(6px);transition:opacity 1s ease,transform 1.1s cubic-bezier(.2,.7,.2,1),filter 1s ease;transition-delay:var(--d,0s)}
.rv.show{opacity:1;transform:none;filter:none}

/* 1 英雄区 */
#hero{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:110px var(--pad) 80px;overflow:hidden;background:#fff}
.blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55;pointer-events:none;animation:fl 16s ease-in-out infinite alternate}
.b1{width:46vw;height:46vw;left:-8vw;top:6vh;background:#BFDDFB}
.b2{width:40vw;height:40vw;right:-6vw;bottom:-6vh;background:#D4E7FF;animation-delay:-6s}
.b3{width:24vw;height:24vw;left:38vw;top:-8vh;background:#E6F1FF;animation-delay:-3s}
@keyframes fl{to{transform:translate(4vw,-3vh) scale(1.12)}}
.hero-in{position:relative;will-change:transform,opacity}
.hero .eyebrow{font-size:clamp(15px,1.7vw,21px);margin-bottom:18px}
.hero h1{margin:0;font-size:clamp(34px,6.6vw,100px);font-weight:700;letter-spacing:-.02em;line-height:1.22;min-height:2.5em;display:grid;place-items:center;max-width:1100px;margin-left:auto;margin-right:auto}
.typed{display:inline;padding:.05em 0;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.caret{display:inline-block;width:.06em;height:.9em;margin-left:.08em;background:var(--blue);vertical-align:-.1em;border-radius:2px;animation:cb 1s steps(2) infinite}
.typing .caret{animation:none}
@keyframes cb{50%{opacity:0}}
.langrow{display:flex;flex-direction:column;align-items:center;gap:16px;margin-top:6px}
#lang{font-size:14px;font-weight:600;letter-spacing:.2em;color:var(--blue);min-width:8em}
.dots{display:flex;gap:7px;flex-wrap:wrap;justify-content:center;max-width:360px}
.dots i{width:6px;height:6px;border-radius:99px;background:#C9D6E6;transition:width .4s,background .4s}
.dots i.on{width:22px;background:var(--blue)}
.hero .tl{font-size:clamp(17px,2vw,26px);font-weight:500;color:#515A66;margin-top:34px;letter-spacing:.04em}
.hero .tl span{display:inline-block;margin:0 .5em;color:#B6C2D0}
.cta{display:flex;gap:26px;justify-content:center;align-items:center;margin-top:44px;flex-wrap:wrap}
.btn{padding:13px 26px;border-radius:999px;background:var(--blue);color:#fff;font-size:17px;font-weight:500;transition:transform .3s,background .3s,box-shadow .3s}
.btn:hover{transform:scale(1.04);background:#1F6BC8;box-shadow:0 10px 30px rgba(47,123,216,.35)}
.lnk{font-size:17px;color:var(--blue);transition:opacity .2s}.lnk:hover{text-decoration:underline}
.chev{position:absolute;left:50%;bottom:30px;width:22px;height:22px;border-right:1.5px solid #9AA8B8;border-bottom:1.5px solid #9AA8B8;transform:translateX(-50%) rotate(45deg);animation:bob 2s ease-in-out infinite}
@keyframes bob{50%{transform:translateX(-50%) translateY(8px) rotate(45deg)}}
#hero .in1{opacity:0;transform:translateY(30px);animation:up 1.2s cubic-bezier(.2,.7,.2,1) forwards}
#hero .in2{animation-delay:.15s}#hero .in3{animation-delay:.3s}#hero .in4{animation-delay:.45s}
@keyframes up{to{opacity:1;transform:none}}

/* 2 关于 */
#about{padding:150px 0 130px;background:var(--bg)}
.stmt{font-size:clamp(26px,4.4vw,52px);font-weight:700;letter-spacing:-.01em;line-height:1.38;max-width:980px;margin:0 auto;text-align:center}
.stmt .w{color:#D4DBE4;transition:color .45s}.stmt .w.on{color:var(--ink)}
.bento{margin-top:100px;display:grid;grid-template-columns:repeat(12,1fr);gap:16px}
.bx{background:var(--alt);border-radius:28px;padding:34px 32px;position:relative;overflow:hidden;transition:transform .5s cubic-bezier(.2,.7,.2,1),box-shadow .5s}
.bx:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(20,40,70,.08)}
.c4{grid-column:span 4}.c6{grid-column:span 6}.c12{grid-column:span 12}
.bx small{display:block;font-size:13px;font-weight:600;color:var(--sub);letter-spacing:.04em;margin-bottom:10px}
.num{white-space:nowrap;font-size:clamp(46px,5.4vw,66px);font-weight:700;letter-spacing:-.03em;line-height:1.05}
.lab{font-size:15px;color:var(--sub);margin-top:6px}
.dir{grid-row:span 2;display:flex;flex-direction:column;background:linear-gradient(165deg,#0E3A74 0%,#2F7BD8 68%,#8EC5FF 120%);color:#fff;padding:36px 32px}
.dir small{color:rgba(255,255,255,.75)}
.dir .big{font-size:clamp(48px,5.4vw,66px);font-weight:700;letter-spacing:-.02em;line-height:1.1}
.dir p{margin-top:16px;font-size:16px;line-height:1.7;color:rgba(255,255,255,.88)}
.dir .chips{margin-top:auto;padding-top:28px;display:flex;flex-wrap:wrap;gap:8px}
.dir .chips span{padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.18);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);font-size:14px}
.edu b{display:block;font-size:26px;font-weight:700;letter-spacing:-.01em}
.edu p{color:var(--sub);font-size:15px;margin-top:8px}
.sk{display:grid;grid-template-columns:52px 1fr;gap:10px;padding:13px 0;border-top:1px solid var(--line);font-size:15px}
.sk:first-of-type{border:0;padding-top:4px}
.sk b{font-weight:600}.sk span{color:#4B5563}
.hon ul{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px}
.hon li{padding:16px 0;border-top:1px solid var(--line)}
.hon li b{display:block;font-size:14px;font-weight:600;color:var(--blue)}.hon li span{font-size:15px;color:#3C4651}

/* 3 经历 */
#exp{background:var(--alt);padding:140px 0 130px}
.xhead{margin-bottom:70px}
.stack{position:relative}
.xc{position:sticky;top:calc(84px + var(--i)*22px);background:#fff;border-radius:32px;padding:44px 48px 48px;margin-bottom:34px;box-shadow:0 1px 0 rgba(0,0,0,.04),0 20px 50px rgba(30,60,100,.07);min-height:280px}
.eb{font-size:14px;font-weight:600;color:var(--blue);letter-spacing:.02em}
.xc h3{font-size:clamp(26px,3.6vw,42px);font-weight:700;letter-spacing:-.01em;line-height:1.25;margin:10px 0 6px}
.xc .role{color:var(--sub);font-size:16px;margin-bottom:22px}
.xc li{position:relative;padding-left:22px;font-size:17px;line-height:1.7;color:#2C333B}.xc li+li{margin-top:8px}
.xc li::before{content:"";position:absolute;left:0;top:.82em;width:7px;height:7px;border-radius:50%;background:var(--sky)}
.phead{display:flex;justify-content:space-between;align-items:flex-end;margin:130px auto 36px}
.arrows{display:flex;gap:10px}
.arrows button{width:44px;height:44px;border-radius:50%;background:#E4EAF1;font-size:18px;transition:background .25s,transform .25s}.arrows button:hover{background:#D3DDE9;transform:scale(1.06)}
.slider{padding-bottom:10px}
.viewport{overflow:hidden;border-radius:32px;touch-action:pan-y}
.track{display:grid}
.sdots{display:flex;gap:10px;justify-content:center;margin-top:28px}
.sdots button{position:relative;width:8px;height:8px;border-radius:99px;background:#C9D6E6;overflow:hidden;transition:width .5s,background .3s}
.sdots button.on{width:46px}
.sdots button.on::after{content:"";position:absolute;inset:0;background:var(--blue);transform-origin:left;animation:fillp var(--dur,3s) linear forwards}
.slider.paused .sdots button.on::after{animation-play-state:paused}
@keyframes fillp{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.pc{grid-area:1/1;display:flex;flex-direction:column;color:#fff;position:relative;overflow:hidden;opacity:0;visibility:hidden;transform:translateX(40px);transition:opacity .8s ease,transform 1s cubic-bezier(.2,.7,.2,1),visibility 0s linear .8s}
.pc.on{opacity:1;visibility:visible;transform:none;transition-delay:0s}
.g1{background:linear-gradient(160deg,#0F3B78,#2F7BD8)}.g2{background:linear-gradient(160deg,#1D5DAE,#5FA8EE)}.g3{background:linear-gradient(160deg,#2A6FC4,#7DB8F2)}.g4{background:linear-gradient(160deg,#16467F,#3F8BDA)}
.pimg{position:relative;flex:none;height:clamp(240px,31vw,380px);overflow:hidden;background:#0B2A52}
.pimg i{position:absolute;inset:0;background-size:cover;background-repeat:no-repeat;transition:transform 1.4s cubic-bezier(.2,.7,.2,1)}
.pc:hover .pimg i{transform:scale(1.06)}
.pimg::after{content:"";position:absolute;left:0;right:0;bottom:0;height:40%;background:linear-gradient(transparent,rgba(15,60,125,.5));pointer-events:none}
.pn{position:absolute;left:22px;top:20px;z-index:2;padding:5px 13px;border-radius:999px;background:rgba(10,30,60,.38);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);font-size:13px;font-weight:600;letter-spacing:.08em}
.pb{padding:30px 40px 38px}
.pb p{max-width:760px}
.pc .eb{color:rgba(255,255,255,.8)}
.pc h3{font-size:clamp(24px,2.5vw,32px);font-weight:700;line-height:1.3;margin:8px 0 12px;letter-spacing:-.01em}
.pc p{font-size:16px;line-height:1.75;color:rgba(255,255,255,.9)}

/* 4 作品 */
#works{background:#000;color:#F5F5F7;padding:140px 0 70px}
#works .eyebrow{color:var(--sky)}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:64px}
.tile{position:relative;min-height:clamp(320px,52vh,480px);border-radius:32px;padding:38px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.tile:hover{transform:scale(1.015)}
.t1{background:radial-gradient(120% 120% at 100% 0,#2F7BD8 0,#0E2C55 55%,#08162B 100%)}
.t2{background:radial-gradient(120% 120% at 0 0,#8EC5FF 0,#2F6FB5 45%,#0E2C55 100%)}
.tile .tag{font-size:14px;font-weight:600;letter-spacing:.14em;color:rgba(255,255,255,.75)}
.tile h3{font-size:clamp(42px,6vw,76px);font-weight:700;letter-spacing:-.02em;line-height:1.05;color:#fff}
.tile .go{display:inline-flex;align-items:center;gap:8px;margin-top:20px;padding:10px 20px;border-radius:999px;background:rgba(255,255,255,.18);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);font-size:16px;color:#fff;transition:background .3s,gap .3s}
.tile:hover .go{background:#fff;color:#08162B;gap:14px}
.ring{position:absolute;right:-90px;top:-90px;width:380px;height:380px;border-radius:50%;border:1px solid rgba(255,255,255,.22);box-shadow:0 0 0 46px rgba(255,255,255,.04),0 0 0 100px rgba(255,255,255,.03);transition:transform .9s cubic-bezier(.2,.7,.2,1)}
.tile:hover .ring{transform:scale(1.25)}
footer{margin-top:100px;padding-top:28px;border-top:1px solid rgba(255,255,255,.14);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 40px;font-size:13px;color:#9AA3AE}
footer a{color:#C9D3DF;transition:color .2s}footer a:hover{color:#fff}
footer div{display:flex;gap:30px;flex-wrap:wrap}
#iris{position:fixed;inset:0;z-index:300;background:#fff;pointer-events:none;clip-path:circle(0px at 50% 50%)}
#iris.go{transition:clip-path .8s cubic-bezier(.6,0,.3,1)}
#toast{position:fixed;left:50%;bottom:40px;transform:translate(-50%,20px);z-index:320;background:rgba(30,30,32,.92);color:#fff;font-size:14px;padding:12px 22px;border-radius:999px;opacity:0;transition:.4s;pointer-events:none}#toast.on{opacity:1;transform:translate(-50%,0)}

@media (max-width:860px){
  .nav ul{display:none}
  #hero{padding-top:90px}
  #about{padding:100px 0 90px}
  .bento{grid-template-columns:1fr;margin-top:60px}
  .c4,.c6,.c12{grid-column:auto}
  .dir{grid-row:auto;min-height:340px}
  .bx{padding:28px 24px}
  .hon ul{grid-template-columns:1fr}
  #exp{padding:100px 0 90px}
  .xc{padding:32px 26px 34px;top:calc(70px + var(--i)*14px)}
  .xc li{font-size:16px}
  .phead{margin-top:90px}
  .pimg{height:min(62vw,300px)}
  .pb{padding:24px 24px 28px}
  .viewport{border-radius:26px}
  .tiles{grid-template-columns:1fr}
  .tile{min-height:300px}
}
@media (prefers-reduced-motion:reduce){.rv{transition:none;opacity:1;transform:none;filter:none}.blob,.chev{animation:none}#hero .in1{animation:none;opacity:1;transform:none}html{scroll-behavior:auto}}