/* Yu · 照片与兽设
   配色取自兽设设定图：白 / 天蓝 / 钴蓝 / 柠檬黄 / 藏青
   大厂范儿的动效层：入场、滚动揭示、视差、磁吸、跑马灯、进度条 */

:root{
  --paper:#fbfdff;
  --paper-2:#eef8fe;
  --ink:#16324d;
  --ink-2:#4a6b88;
  --ink-3:#8aa8c1;
  --line:#d9e9f6;
  --line-2:#e9f4fc;
  --blue:#0b8cf0;
  --blue-deep:#0b5fa5;
  --cyan:#a8e4f7;
  --yellow:#ffd64a;
  --cream:#f6e7c6;
  --wrap:980px;
  --radius:16px;
  --sans:"PingFang SC","Hiragino Sans GB","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,"Roboto Mono",monospace;
  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-soft:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;color:var(--ink);background:var(--paper);
  font-family:var(--sans);font-size:16px;line-height:1.9;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-image:
    linear-gradient(to right,rgba(11,140,240,.045) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(11,140,240,.045) 1px,transparent 1px),
    radial-gradient(900px 520px at 82% -8%,rgba(168,228,247,.55),transparent 70%);
  background-size:34px 34px,34px 34px,auto;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;line-height:1.4;letter-spacing:-.01em;font-weight:800}
p{margin:0 0 1em}
em{font-style:normal}
code{font-family:var(--mono);font-size:.82em;background:var(--paper-2);border:1px solid var(--line-2);color:var(--blue-deep);padding:.05em .4em;border-radius:4px}
.muted{color:var(--ink-3)}
.small{font-size:.86rem}
.center{text-align:center}
.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:.6em 1em;border:1px solid var(--line);z-index:99}
.skip:focus{left:8px;top:8px}
:focus-visible{outline:2px solid var(--blue);outline-offset:4px;border-radius:8px}
::selection{background:rgba(255,214,74,.55);color:#0f2b43}

.wrap{width:min(var(--wrap),calc(100% - 2*clamp(20px,5vw,48px)));margin-inline:auto}
section[id]{scroll-margin-top:96px}

/* ---------- 顶部进度条 / 光标光晕 ---------- */
.progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:60;background:transparent;pointer-events:none}
.progress i{display:block;height:100%;width:100%;transform-origin:0 50%;transform:scaleX(0);
  background:linear-gradient(90deg,var(--blue),var(--cyan) 55%,var(--yellow));transition:transform .1s linear}
.cursor-glow{position:fixed;left:0;top:0;width:320px;height:320px;border-radius:50%;pointer-events:none;z-index:-1;
  background:radial-gradient(circle,rgba(11,140,240,.13),rgba(11,140,240,0) 62%);
  transform:translate3d(-50%,-50%,0);opacity:0;transition:opacity .5s ease;mix-blend-mode:multiply}
.cursor-glow.on{opacity:1}

/* ---------- 顶栏 ---------- */
.site-head{position:sticky;top:0;z-index:40;background:rgba(251,253,255,.82);backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid transparent;transition:background .4s var(--ease-soft),border-color .4s,box-shadow .4s}
.site-head.scrolled{background:rgba(251,253,255,.94);border-bottom-color:var(--line);box-shadow:0 10px 30px -26px rgba(11,95,165,.9)}
.head-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:1rem}
.brand{display:flex;align-items:center;gap:.55rem}
.brand-mark{width:26px;height:26px;transition:transform .5s var(--ease-out)}
.brand:hover .brand-mark{transform:rotate(-14deg) scale(1.08)}
.brand-mark svg{width:100%;height:100%;fill:var(--blue)}
.brand-name{font-weight:800;font-size:1.06rem;letter-spacing:.02em}
.brand-name em{font-family:var(--mono);font-size:.62rem;color:var(--ink-3);margin-left:.45em;letter-spacing:.16em;font-weight:400}
.nav{position:relative;display:flex;gap:clamp(.9rem,2.4vw,1.9rem);font-size:.92rem}
.nav a{color:var(--ink-2);padding:.3rem .1rem;position:relative;transition:color .3s var(--ease-soft)}
.nav a:hover,.nav a.active{color:var(--blue-deep)}
.nav-pill{position:absolute;left:0;bottom:-4px;height:2px;width:0;border-radius:2px;background:var(--blue);
  transition:transform .45s var(--ease-out),width .45s var(--ease-out),opacity .3s;opacity:0}
.nav-pill.on{opacity:1}
.menu-btn{display:none;width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:9px 7px;cursor:pointer}
.menu-btn span{display:block;height:2px;background:var(--ink);border-radius:2px;margin:5px 0;transition:transform .3s var(--ease-soft),opacity .3s}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}

/* ---------- 首屏 ---------- */
.hero{padding:clamp(40px,6vw,76px) 0 clamp(30px,5vw,58px);position:relative}
.hero-inner{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(26px,4vw,56px);align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:.6rem;font-family:var(--mono);font-size:.7rem;letter-spacing:.3em;
  color:var(--blue-deep);margin:0 0 1.3rem}
.dot{width:7px;height:7px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px rgba(11,140,240,.14);animation:pulse 2.6s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 9px rgba(11,140,240,.04)}}

h1{font-size:clamp(2rem,4.6vw,3.1rem);line-height:1.45;margin-bottom:1.1rem;color:#0f2b43}
.line{display:block;overflow:hidden;padding-bottom:.04em}
html.js-motion .line>span{display:block;transform:translateY(112%);animation:lineUp 1s var(--ease-out) forwards}
.line:nth-child(1)>span{animation-delay:.08s}
.line:nth-child(2)>span{animation-delay:.2s}
@keyframes lineUp{to{transform:translateY(0)}}
.mark{position:relative;color:var(--blue-deep);white-space:nowrap}
.mark::after{content:"";position:absolute;left:-2px;right:-2px;bottom:.06em;height:.42em;z-index:-1;border-radius:3px;
  background:linear-gradient(90deg,rgba(255,214,74,.9),rgba(255,214,74,.35));
  transform:scaleX(0);transform-origin:left;animation:markIn .8s var(--ease-out) .75s forwards}
@keyframes markIn{to{transform:scaleX(1)}}

.hero-text>*:not(h1):not(.eyebrow):not(.line){animation:riseIn .9s var(--ease-out) both}
.hero-text .eyebrow{animation:riseIn .9s var(--ease-out) both}
.hero-text .lead{animation-delay:.35s}
.hero-actions{animation-delay:.46s}
.palette{animation-delay:.56s}
@keyframes riseIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

.lead{color:var(--ink-2);font-size:clamp(.96rem,1.4vw,1.04rem);margin-bottom:1.5rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.7rem;margin-bottom:1.6rem}
.btn{position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;height:46px;
  padding:0 1.4rem;border-radius:999px;font-weight:700;font-size:.94rem;
  transition:transform .35s var(--ease-out),box-shadow .35s var(--ease-out),background .3s,border-color .3s;
  will-change:transform}
.btn span{position:relative;z-index:1}
.btn::before{content:"";position:absolute;inset:0;z-index:0;opacity:0;transition:opacity .4s;
  background:linear-gradient(110deg,transparent 20%,rgba(255,255,255,.55) 50%,transparent 80%);
  transform:translateX(-60%)}
.btn:hover::before{opacity:1;animation:sheen .9s var(--ease-soft)}
@keyframes sheen{from{transform:translateX(-70%)}to{transform:translateX(70%)}}
.btn-primary{background:linear-gradient(135deg,#1aa3ff,var(--blue));color:#fff;box-shadow:0 12px 26px -14px rgba(11,140,240,.9)}
.btn-primary:hover{box-shadow:0 20px 34px -16px rgba(11,140,240,1)}
.btn-ghost{background:#fff;border:1.5px solid var(--line);color:var(--blue-deep)}
.btn-ghost:hover{border-color:var(--cyan);background:var(--paper-2)}
.magnetic{transform:translate3d(var(--mx,0px),var(--my,0px),0)}

.palette{list-style:none;display:flex;gap:.5rem;padding:0;margin:0}
.palette li{width:44px}
.palette li::before{content:"";display:block;height:26px;border-radius:7px;background:var(--c);border:1px solid rgba(11,95,165,.14);
  transition:transform .4s var(--ease-out),box-shadow .4s}
.palette li:hover::before{transform:translateY(-4px) scale(1.04);box-shadow:0 10px 18px -12px rgba(11,95,165,.9)}
.palette span{display:block;font-family:var(--mono);font-size:.52rem;color:var(--ink-3);margin-top:.35rem;letter-spacing:0}

.hero-art{position:relative;display:flex;justify-content:center;align-items:center}
.art-frame{
  position:relative;margin:0;background:#fff;border:2px solid #d7ecfb;border-radius:22px;
  padding:12px 12px 38px;box-shadow:0 26px 50px -34px rgba(11,95,165,.7);
  width:min(100%,358px);flex:0 0 auto;
  transform:rotate(-1.2deg) scale(1);
  animation:artIn 1.2s var(--ease-out) .25s both;
  transition:box-shadow .5s var(--ease-soft);
  will-change:transform;
}
@keyframes artIn{from{opacity:0;transform:rotate(-5deg) scale(.9)}to{opacity:1;transform:rotate(-1.2deg) scale(1)}}
.art-frame img{width:100%;height:auto;border-radius:12px;background:#fff}
.art-frame figcaption{position:absolute;left:0;right:0;bottom:12px;text-align:center;font-family:var(--mono);
  font-size:.62rem;letter-spacing:.28em;color:var(--ink-3);text-transform:uppercase}
.sticker{position:absolute;z-index:2;display:grid;place-items:center;border-radius:50%;background:#fff;
  box-shadow:0 8px 18px -12px rgba(11,95,165,.8);opacity:0;animation:popIn .8s var(--ease-out) forwards}
.s1{width:44px;height:44px;color:var(--yellow);font-size:1.3rem;top:-14px;left:2%;border:2px solid #ffe9a3;animation-delay:.9s}
.s2{width:52px;height:52px;font-size:1.35rem;bottom:6%;right:-4px;border:2px solid var(--cyan);animation-delay:1.05s}
@keyframes popIn{from{opacity:0;transform:scale(.4) rotate(-20deg)}to{opacity:1;transform:scale(1) rotate(0)}}

/* ---------- 跑马灯 ---------- */
.ribbon{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;
  padding:14px 0;user-select:none}
.ribbon-track{display:flex;gap:1.6rem;width:max-content;animation:marquee 26s linear infinite;will-change:transform}
.ribbon:hover .ribbon-track{animation-play-state:paused}
.ribbon span{font-family:var(--mono);font-size:.78rem;letter-spacing:.4em;color:var(--blue-deep);white-space:nowrap}
.ribbon b{color:var(--yellow)}
@keyframes marquee{from{transform:translate3d(0,0,0)}to{transform:translate3d(-50%,0,0)}}

/* ---------- 章节 ---------- */
.section{padding:clamp(46px,7vw,88px) 0;border-top:1px solid var(--line-2)}
.section-alt{background:linear-gradient(180deg,rgba(238,248,254,.7),rgba(251,253,255,0));border-top:1px solid var(--line)}
.sec-head{margin-bottom:clamp(26px,4vw,44px);max-width:660px}
.sec-head.center{margin-inline:auto;text-align:center}
.kicker{display:flex;align-items:center;gap:.7rem;font-family:var(--mono);font-size:.68rem;letter-spacing:.28em;
  color:var(--blue-deep);margin:0 0 .8rem}
.sec-head.center .kicker{justify-content:center}
.kicker span{font-size:.72rem;color:#fff;background:var(--blue);padding:.05rem .38rem;border-radius:4px;letter-spacing:.04em}
.kicker::after{content:"";height:1px;flex:1;max-width:70px;background:var(--line);transform-origin:left;
  transform:scaleX(0);transition:transform 1s var(--ease-out) .15s}
.is-in .kicker::after,.sec-head.is-in .kicker::after{transform:scaleX(1)}
.sec-head.center .kicker::after{display:none}
h2{font-size:clamp(1.5rem,2.8vw,2rem);color:#0f2b43}
.sec-sub{color:var(--ink-2);font-size:.94rem;margin:.5rem 0 0}

/* ---------- 滚动揭示 ---------- */
html.js-motion [data-reveal],html.js-motion .sec-head{opacity:0;transform:translateY(26px);
  transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
html.js-motion [data-reveal].is-in,html.js-motion .sec-head.is-in{opacity:1;transform:none}
html.js-motion [data-reveal-group]>*{opacity:0;transform:translateY(22px);
  transition:opacity .8s var(--ease-out),transform .8s var(--ease-out);transition-delay:calc(var(--i,0) * 80ms)}
html.js-motion .is-in[data-reveal-group]>*{opacity:1;transform:none}
html.js-motion [data-reveal-item]{opacity:0;transform:translateY(30px) scale(.985);
  transition:opacity .9s var(--ease-out),transform .9s var(--ease-out);transition-delay:calc(var(--i,0) * 90ms)}
html.js-motion [data-reveal-item].is-in{opacity:1;transform:none}

/* ---------- 关于 ---------- */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(26px,4vw,56px)}
.about-text p{color:var(--ink-2)}
.about-text p:first-child{color:var(--ink);font-size:1.02rem}
.facts{margin:0}
.facts>div{display:flex;justify-content:space-between;gap:1.4rem;padding:.75rem 0;border-bottom:1px dashed var(--line);
  transition:border-color .3s,transform .3s var(--ease-out)}
.facts>div:hover{transform:translateX(4px);border-bottom-color:var(--cyan)}
.facts>div:first-child{padding-top:0}
.facts dt{color:var(--ink-3);font-size:.8rem;letter-spacing:.08em;flex:0 0 auto;font-family:var(--mono)}
.facts dd{margin:0;font-size:.92rem;color:var(--ink-2);text-align:right;font-weight:600}

/* ---------- 照片 ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(12px,2.2vw,22px)}
.photo{
  position:relative;margin:0;aspect-ratio:4/3;overflow:hidden;cursor:zoom-in;background:#fff;
  border:1px solid var(--line);border-radius:14px;box-shadow:0 14px 30px -26px rgba(11,95,165,.85);
  transition:transform .5s var(--ease-out),box-shadow .5s var(--ease-out),border-color .4s;
  will-change:transform;
}
.photo::before{content:"";position:absolute;inset:7px 7px 34px;border-radius:9px;
  background-image:var(--ph),linear-gradient(150deg,#eaf6fe,#dff0fb);background-size:cover;background-position:center;
  transition:transform .9s var(--ease-out)}
.photo::after{content:"";position:absolute;left:7px;right:7px;bottom:7px;height:27px;border-radius:9px;background:#fff}
.photo figcaption{position:absolute;left:0;right:0;bottom:0;height:41px;z-index:1;display:flex;align-items:center;
  justify-content:space-between;padding:0 .85rem;font-size:.78rem;font-weight:600;color:#0f2b43}
.photo figcaption time{font-family:var(--mono);font-size:.66rem;color:var(--ink-3);letter-spacing:.04em;transition:color .3s}
.photo:hover{transform:translateY(-6px);border-color:var(--cyan);box-shadow:0 26px 40px -26px rgba(11,95,165,1)}
.photo:hover::before{transform:scale(1.07)}
.photo:hover figcaption time{color:var(--blue)}
.ph-1{--ph:url("/assets/img/photo-01-thumb.jpg")}
.ph-2{--ph:url("/assets/img/photo-02-thumb.jpg")}
.ph-3{--ph:url("/assets/img/photo-03-thumb.jpg")}
.ph-4{--ph:url("/assets/img/photo-04-thumb.jpg")}
.ph-5{--ph:url("/assets/img/photo-05-thumb.jpg")}
.ph-6{--ph:url("/assets/img/photo-06-thumb.jpg")}
.hint{margin-top:1.2rem;font-size:.78rem;color:var(--ink-3)}

/* ---------- 兽设 ---------- */
.fursona{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:clamp(22px,4vw,44px);align-items:start}
.fs-art{max-width:430px}
.fs-art-inner{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;
  box-shadow:0 22px 46px -36px rgba(11,95,165,.9);
  background-image:linear-gradient(to right,rgba(11,140,240,.05) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(11,140,240,.05) 1px,transparent 1px);
  background-size:22px 22px;transition:box-shadow .5s var(--ease-soft),transform .5s var(--ease-out)}
.fs-art-inner{transform:translate3d(0,var(--py,0px),0)}
.fs-art-inner:hover{box-shadow:0 30px 56px -34px rgba(11,95,165,1);transform:translate3d(0,calc(var(--py,0px) - 3px),0)}
.fs-art-inner img{width:100%;height:auto}
.fs-art-cap{margin:.6rem 0 0;font-family:var(--mono);font-size:.66rem;letter-spacing:.22em;color:var(--ink-3);text-align:center}
.fs-name{font-size:clamp(1.5rem,2.6vw,1.9rem);display:flex;align-items:baseline;gap:.55rem;margin-bottom:.6rem;color:#0f2b43}
.fs-name em{font-family:var(--mono);font-size:.7rem;color:var(--ink-3);letter-spacing:.24em;font-weight:400}
.fs-desc{color:var(--ink-2);font-size:.96rem;margin-bottom:1.1rem}
.fs-spec{margin:0 0 1.1rem;display:grid;grid-template-columns:1fr 1fr;gap:0 1.6rem}
.fs-spec>div{display:flex;justify-content:space-between;gap:.8rem;padding:.5rem 0;border-bottom:1px dashed var(--line)}
.fs-spec dt{color:var(--ink-3);font-size:.74rem;font-family:var(--mono);letter-spacing:.06em;flex:0 0 auto}
.fs-spec dd{margin:0;font-size:.86rem;font-weight:600;color:var(--ink-2);text-align:right}
.fs-colors{display:flex;align-items:center;gap:.7rem;margin-bottom:1.1rem}
.fs-colors .label{font-family:var(--mono);font-size:.62rem;letter-spacing:.24em;color:var(--ink-3)}
.fs-colors ul{list-style:none;display:flex;gap:.4rem;margin:0;padding:0}
.fs-colors li{width:22px;height:22px;border-radius:6px;background:var(--c);border:1px solid rgba(11,95,165,.16);
  transition:transform .4s var(--ease-out)}
.fs-colors li:hover{transform:translateY(-4px) scale(1.06)}
.tags{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem;padding:0;margin:0}
.tags li{font-size:.76rem;color:var(--blue-deep);background:var(--paper-2);border:1px solid #d5ecfb;
  padding:.16rem .68rem;border-radius:999px;transition:background .3s,transform .3s var(--ease-out)}
.tags li:hover{background:#e2f4ff;transform:translateY(-2px)}

.sheets{display:grid;grid-template-columns:1.35fr .65fr;gap:clamp(12px,2vw,20px);margin-top:clamp(18px,3vw,30px)}
.sheet{margin:0;position:relative;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:0 16px 34px -30px rgba(11,95,165,.9);cursor:zoom-in;
  transition:transform .5s var(--ease-out),border-color .4s,box-shadow .5s var(--ease-out)}
.sheet img{width:100%;height:100%;object-fit:contain;background:var(--paper-2);transform:translate3d(0,var(--py,0px),0) scale(1.01);transition:transform .9s var(--ease-out)}
.sheet figcaption{position:absolute;left:0;right:0;bottom:0;padding:.5rem .8rem;font-size:.74rem;font-weight:600;
  color:#0f2b43;background:linear-gradient(180deg,transparent,rgba(255,255,255,.94) 42%)}
.sheet:hover{transform:translateY(-4px);border-color:var(--cyan);box-shadow:0 26px 44px -28px rgba(11,95,165,1)}
.sheet:hover img{transform:translate3d(0,var(--py,0px),0) scale(1.05)}
.sheet-wide{aspect-ratio:4/3}
.sheet-tall{aspect-ratio:3/4}

/* ---------- 联系 ---------- */
.contact-wrap{text-align:center}
.mail{display:inline-block;font-weight:800;font-size:clamp(1.1rem,2.4vw,1.45rem);color:var(--blue-deep);
  padding:.1rem .2rem .25rem;border-bottom:2px solid var(--yellow);
  transition:color .35s var(--ease-soft),border-color .35s,letter-spacing .35s var(--ease-out)}
.mail:hover{color:var(--blue);border-color:var(--blue);letter-spacing:.03em}
.contact-wrap .small{margin-top:1.5rem}

/* ---------- 页脚 ---------- */
.site-foot{border-top:1px solid var(--line);padding:26px 0 34px}
.site-foot p{margin:0;text-align:center;font-size:.78rem;color:var(--ink-3);letter-spacing:.08em}

/* ---------- 灯箱 ---------- */
.lightbox{position:fixed;inset:0;z-index:80;background:rgba(12,32,50,.92);display:grid;place-items:center;
  grid-template-rows:1fr auto;gap:.8rem;padding:clamp(18px,4vw,48px);opacity:0;transition:opacity .35s var(--ease-soft)}
.lightbox[hidden]{display:none}
.lightbox.open{opacity:1}
.lb-img{max-width:92vw;max-height:76vh;object-fit:contain;border-radius:12px;background:#fff;
  transform:scale(.96);transition:transform .45s var(--ease-out)}
.lightbox.open .lb-img{transform:scale(1)}
.lb-cap{color:rgba(255,255,255,.8);font-size:.82rem;letter-spacing:.08em;margin:0}
.lb-close{position:absolute;top:16px;right:18px;width:42px;height:42px;border-radius:50%;
  border:1px solid rgba(255,255,255,.4);background:none;color:#fff;font-size:1.45rem;line-height:1;cursor:pointer;
  transition:transform .35s var(--ease-out),border-color .3s}
.lb-close:hover{border-color:#fff;transform:rotate(90deg)}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero-art{order:-1}
  .art-frame{width:min(100%,280px)}
  .about-grid{grid-template-columns:1fr}
  .fursona{grid-template-columns:1fr}
  .fs-art{max-width:340px;margin-inline:auto}
  .sheets{grid-template-columns:1fr}
  .sheet-tall{aspect-ratio:4/3}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .cursor-glow{display:none}
}
@media (max-width:640px){
  body{font-size:15px}
  .nav{position:absolute;top:68px;left:0;right:0;flex-direction:column;gap:0;background:var(--paper);
    border-bottom:1px solid var(--line);padding:.3rem clamp(20px,5vw,48px) .9rem;display:none}
  .nav.open{display:flex}
  .nav a{padding:.7rem 0;border-bottom:1px solid var(--line-2)}
  .nav-pill{display:none}
  .menu-btn{display:block}
  .gallery{grid-template-columns:1fr}
  .palette li{width:38px}
  .fs-spec{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-delay:0ms !important;transition-duration:.001ms !important}
  [data-reveal],[data-reveal-group]>*,[data-reveal-item],.sec-head{opacity:1 !important;transform:none !important}
  h2{clip-path:none !important}
  .line>span{transform:none !important}
  .art-frame{opacity:1;transform:rotate(-1.2deg)}
  .sticker{opacity:1}
}

/* ============================================================
   MOTION 2.0 —— 开场、拆字、视差、3D 悬停、鼠标标签
   ============================================================ */

/* ---------- 开场遮罩 ---------- */
.intro{position:fixed;inset:0;z-index:100;background:var(--paper);display:grid;place-items:center;
  animation:introOut .8s cubic-bezier(.76,0,.24,1) 1.05s forwards}
.intro-inner{display:flex;flex-direction:column;align-items:center;gap:14px}
.intro-paw{width:54px;height:54px;fill:var(--blue);transform:scale(.6);opacity:0;
  animation:introPaw .8s var(--ease-out) .1s forwards}
.intro-word{font-family:var(--mono);font-size:.72rem;letter-spacing:.55em;color:var(--ink-3);
  opacity:0;animation:riseIn .7s var(--ease-out) .35s forwards}
.intro-bar{width:120px;height:2px;background:var(--line);border-radius:2px;overflow:hidden;display:block}
.intro-bar i{display:block;height:100%;width:100%;background:linear-gradient(90deg,var(--blue),var(--yellow));
  transform-origin:left;transform:scaleX(0);animation:introBar .95s var(--ease-out) .15s forwards}
@keyframes introPaw{to{transform:scale(1);opacity:1}}
@keyframes introBar{to{transform:scaleX(1)}}
@keyframes introOut{to{opacity:0;visibility:hidden;transform:translateY(-100%)}}
.intro-skip .intro{display:none}

/* ---------- 拆字入场 ---------- */
html.js-motion .sec-head{opacity:1;transform:none}
html.js-motion .kicker{opacity:0;transform:translateY(10px);
  transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
html.js-motion .sec-head.is-in .kicker{opacity:1;transform:none}
html.js-motion .sec-sub,html.js-motion .fs-desc,html.js-motion .about-text p{will-change:transform,opacity}
.ch{display:inline-block;transform:translateY(115%) rotate(3deg);opacity:0;
  transition:transform .85s var(--ease-out),opacity .6s var(--ease-out);
  transition-delay:calc(var(--ci,0) * 26ms)}
.is-in .ch{transform:none;opacity:1}
h1 .line>span,.fs-name{white-space:nowrap}

/* ---------- 首屏漂浮装饰 ---------- */
.float-paw{position:absolute;font-size:1.1rem;opacity:.75;pointer-events:none;filter:saturate(.7);
  animation:floaty 9s ease-in-out infinite}
.fp-1{top:6%;left:-6%;animation-delay:-1s}
.fp-2{top:32%;right:-8%;font-size:.9rem;color:var(--yellow);animation-delay:-4s}
.fp-3{bottom:2%;left:8%;font-size:.95rem;animation-delay:-6.5s}
@keyframes floaty{0%,100%{transform:translate3d(0,0,0) rotate(-6deg)}50%{transform:translate3d(6px,-16px,0) rotate(8deg)}}

/* ---------- 鼠标 VIEW 标签 ---------- */
.cursor-label{position:fixed;left:0;top:0;z-index:70;pointer-events:none;
  padding:.35rem .7rem;border-radius:999px;background:var(--blue);color:#fff;
  font-family:var(--mono);font-size:.62rem;letter-spacing:.18em;
  transform:translate3d(-50%,-50%,0) scale(.4);opacity:0;
  transition:opacity .25s,transform .3s var(--ease-out);will-change:transform}
.cursor-label.on{opacity:1;transform:translate3d(-50%,-50%,0) scale(1)}

/* ---------- 照片：帘幕揭示 + 3D 悬停 ---------- */
html.js-motion .photo{clip-path:inset(0 0 100% 0);transition:clip-path 1s var(--ease-out),
  transform .5s var(--ease-out),box-shadow .5s var(--ease-out),border-color .4s;
  transition-delay:calc(var(--i,0) * 90ms)}
html.js-motion .photo.is-in{clip-path:inset(0 0 0 0)}
html.js-motion .sheet{clip-path:inset(0 0 100% 0);transition:clip-path 1.1s var(--ease-out),transform .5s var(--ease-out),border-color .4s,box-shadow .5s var(--ease-out)}
html.js-motion .sheet.is-in{clip-path:inset(0 0 0 0)}
.photo{transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg)) translateY(var(--ty,0px))}
.photo:hover{--ty:-6px}
.photo .cap-arrow{position:absolute;right:.7rem;bottom:.85rem;z-index:2;font-family:var(--mono);
  font-size:.6rem;letter-spacing:.14em;color:var(--blue);opacity:0;transform:translateX(-6px);
  transition:opacity .3s,transform .35s var(--ease-out)}
.photo:hover .cap-arrow{opacity:1;transform:none}

/* ---------- 分区左右揭示 ---------- */
html.js-motion [data-from="left"]{opacity:0;transform:translateX(-28px);
  transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
html.js-motion [data-from="right"]{opacity:0;transform:translateX(28px);
  transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
html.js-motion [data-from].is-in{opacity:1;transform:none}

/* ---------- 顶栏隐藏 / 底部进度 ---------- */
.site-head{transition:transform .45s var(--ease-out),background .4s,border-color .4s,box-shadow .4s}
.site-head.hide{transform:translateY(-105%)}

/* ---------- 按钮按压 ---------- */
.btn:active{transform:scale(.97)}

/* ---------- 章标题粘性 ---------- */
.sticky-title{position:sticky;top:88px;z-index:2}

@media (prefers-reduced-motion:reduce){
  .intro{display:none}
  .float-paw{animation:none}
  .ch{transform:none;opacity:1}
}

/* ---------- 首屏滚动提示 ---------- */
.scroll-hint{position:absolute;left:50%;bottom:6px;transform:translateX(-50%);display:flex;flex-direction:column;
  align-items:center;gap:6px;text-decoration:none;z-index:3}
.sh-text{font-family:var(--mono);font-size:.58rem;letter-spacing:.36em;color:var(--ink-3)}
.sh-line{display:block;width:1px;height:38px;background:var(--line);position:relative;overflow:hidden}
.sh-line i{position:absolute;left:0;top:-40%;width:1px;height:40%;background:linear-gradient(180deg,var(--blue),var(--yellow));
  animation:scrollDot 1.9s cubic-bezier(.76,0,.24,1) infinite}
@keyframes scrollDot{0%{top:-40%}60%,100%{top:110%}}
.scroll-hint:hover .sh-text{color:var(--blue)}
@media (max-width:900px){.scroll-hint{display:none}}
@media (prefers-reduced-motion:reduce){.sh-line i{animation:none;top:0;height:100%}}

/* 滚动提示留白修正 */
.hero{padding-bottom:clamp(56px,6vw,80px)}
.scroll-hint{bottom:16px;z-index:5}

/* 滚动提示简化为文字 + 箭头 */
.scroll-hint{bottom:14px;display:inline-flex;align-items:center;gap:.4rem;
  padding:.34rem .8rem;border:1px solid var(--line);border-radius:999px;background:rgba(251,253,255,.85);
  backdrop-filter:blur(6px)}
.sh-text{font-family:var(--mono);font-size:.58rem;letter-spacing:.3em;color:var(--ink-3)}
.sh-line{display:none}
.scroll-hint:hover{border-color:var(--cyan);background:#fff}

/* ---------- 3D 模型区 ---------- */
.model-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:14px;
  box-shadow:0 24px 50px -40px rgba(11,95,165,.95)}
.mv{width:100%;height:clamp(340px,56vh,520px);border-radius:14px;display:block;outline:none;
  background:radial-gradient(120% 95% at 50% 0%,#eaf7fe,#ffffff 62%);
  --poster-color:#eef8fe;--progress-bar-color:var(--blue);--progress-mask:transparent}
.mv:focus-visible{outline:2px solid var(--blue);outline-offset:4px}
.mv-loading{font-family:var(--mono);font-size:.68rem;letter-spacing:.24em;color:var(--ink-3);
  display:grid;place-items:center;height:100%}
.model-meta{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  padding:1rem .5rem .2rem;margin-top:.9rem;border-top:1px dashed var(--line)}
.mm-text{display:flex;flex-direction:column;gap:.15rem}
.mm-text b{font-size:.94rem}
.mm-text span{font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;color:var(--ink-3)}
@media (max-width:640px){
  .model-card{padding:10px;border-radius:18px}
  .mv{height:clamp(300px,48vh,420px)}
  .model-meta{padding:.9rem .3rem .2rem}
}

/* 加载占位：不要被 cover 裁剪 */
.mv{--poster-color:transparent}
.mv-loading{position:absolute;inset:0;display:grid;place-items:center;
  font-family:var(--mono);font-size:.68rem;letter-spacing:.24em;color:var(--ink-3);
  background:radial-gradient(120% 95% at 50% 0%,#eaf7fe,#ffffff 62%)}

/* 只读提示 + 页脚声明 */
.mm-lock{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;color:var(--ink-3);
  border:1px dashed var(--line);border-radius:999px;padding:.42rem .9rem;white-space:nowrap}
.site-foot{padding:30px 0 38px}
.foot-line{font-size:.78rem;letter-spacing:.08em;color:var(--ink-3);text-align:center;margin:0 0 .7rem}
.foot-warn{max-width:640px;margin:0 auto;text-align:center;font-size:.74rem;line-height:1.9;color:var(--ink-3);
  border-top:1px dashed var(--line);padding-top:.85rem}
.foot-warn b{color:var(--blue-deep);font-weight:600}
.foot-warn a{color:var(--blue-deep);border-bottom:1px solid rgba(11,95,165,.3)}
.foot-warn a:hover{border-bottom-color:var(--blue)}

/* ---------- 页脚彩蛋 ---------- */
.site-foot{position:relative}
.egg{
  display:block;margin:22px auto 0;padding:.35rem 1.1rem;
  background:none;border:0;cursor:pointer;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.52em;text-indent:.52em;
  color:#d3dde8;
  transition:color .5s var(--ease-soft),letter-spacing .6s var(--ease-out),text-shadow .5s;
}
.egg:hover,.egg:focus-visible{color:#9db2c7;letter-spacing:.72em;text-indent:.72em;text-shadow:0 0 18px rgba(11,140,240,.25)}
@media (prefers-reduced-motion:reduce){.egg{transition:none}}

/* 彩蛋调色：能隐约看见，但不抢戏 */
.egg{color:#c2cfdd;margin-top:26px;padding:.4rem 1.2rem;font-size:.74rem}
.egg:hover,.egg:focus-visible{color:#88a2bd}

/* ============================================================
   彩蛋关卡（连点页脚 Hi 5 次）
   ============================================================ */
.gate{position:fixed;inset:0;z-index:90;display:grid;place-items:center;padding:clamp(14px,3.5vw,40px);
  background:rgba(7,16,28,.93);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  opacity:0;transition:opacity .45s var(--ease-soft)}
.gate[hidden]{display:none}
.gate.open{opacity:1}
.gate-panel{position:relative;width:min(720px,100%);max-height:86vh;overflow:auto;
  background:var(--paper);border-radius:22px;padding:clamp(20px,3.4vw,40px);
  box-shadow:0 50px 100px -50px rgba(0,0,0,.9);
  transform:translateY(20px) scale(.98);transition:transform .55s var(--ease-out)}
.gate.open .gate-panel{transform:none}
.gate-panel.shake{animation:gateShake .45s cubic-bezier(.36,.07,.19,.97)}
@keyframes gateShake{10%,90%{transform:translateX(-2px)}20%,80%{transform:translateX(4px)}
  30%,50%,70%{transform:translateX(-7px)}40%,60%{transform:translateX(7px)}}
.gate-close{position:fixed;top:16px;right:18px;width:42px;height:42px;border-radius:50%;z-index:2;
  border:1px solid rgba(255,255,255,.35);background:none;color:#fff;font-size:1.4rem;line-height:1;cursor:pointer;
  transition:transform .35s var(--ease-out),border-color .3s}
.gate-close:hover{border-color:#fff;transform:rotate(90deg)}
.gate-step{font-family:var(--mono);font-size:.64rem;letter-spacing:.3em;color:var(--blue);margin:0 0 .9rem}
.gate-title{font-size:clamp(1.2rem,2.6vw,1.6rem);color:#0f2b43;margin:0 0 .6rem}
.gate-sub{color:var(--ink-2);font-size:.92rem;margin:0 0 1.3rem}

.char-card{display:flex;align-items:center;gap:.9rem;width:100%;text-align:left;background:#fff;
  border:1px solid var(--line);border-radius:16px;padding:1rem 1.1rem;cursor:pointer;font-family:inherit;
  transition:transform .35s var(--ease-out),border-color .3s,box-shadow .35s}
.char-card:hover{transform:translateY(-3px);border-color:var(--cyan);box-shadow:0 22px 40px -30px rgba(11,95,165,1)}
.char-ava{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;flex:0 0 auto;
  background:linear-gradient(140deg,var(--cyan),var(--blue));color:#fff;font-weight:800}
.char-meta{display:flex;flex-direction:column;gap:.12rem;flex:1}
.char-meta b{font-size:1rem;color:#0f2b43}
.char-meta small{font-size:.72rem;color:var(--ink-3);font-family:var(--mono)}
.char-go{font-size:.8rem;color:var(--blue-deep);white-space:nowrap}

.q-opts{display:grid;gap:.55rem;margin:.1rem 0 .8rem}
.q-opt{width:100%;text-align:left;background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:.78rem 1rem;font-size:.94rem;color:var(--ink);cursor:pointer;font-family:inherit;
  transition:transform .25s var(--ease-out),border-color .25s,background .25s,color .25s}
.q-opt:hover{transform:translateX(4px);border-color:var(--cyan);background:var(--paper-2)}
.q-opt:disabled{cursor:default}
.q-opt.ok{border-color:#3ec98a;background:#eafaf1;color:#127a4d;transform:none}
.q-opt.bad{border-color:#ef7c8e;background:#fdeef1;color:#a33246;transform:none}
.q-hint{min-height:1.2em;margin:0;font-size:.8rem;color:var(--ink-3)}

.letter{margin-top:.4rem}
.l-line{opacity:0;transform:translateY(10px);margin:0 0 .8rem;font-size:.95rem;line-height:2;color:var(--ink);
  transition:opacity .8s var(--ease-out),transform .8s var(--ease-out)}
.l-line.on{opacity:1;transform:none}
.l-shot{display:block;width:100%;margin:1.1rem 0 0;border-radius:12px;border:1px solid var(--line);
  opacity:0;transform:translateY(14px) scale(.98);
  transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
.l-shot.on{opacity:1;transform:none}
.gate-fin{opacity:0;transition:opacity .8s var(--ease-out);text-align:center;font-family:var(--mono);
  font-size:.64rem;letter-spacing:.34em;color:var(--ink-3);margin:1rem 0 0}
.gate-fin.on{opacity:1}
@media (prefers-reduced-motion:reduce){
  .gate,.gate-panel,.l-line,.l-shot,.gate-fin{transition:none !important}
  .gate-panel.shake{animation:none}
}

/* ---------- 结局信件：纸张质感 + 打字机 ---------- */
.letter{background:linear-gradient(180deg,#fffdf8,#ffffff);
  border:1px solid var(--line-2);border-radius:16px;
  padding:clamp(16px,2.8vw,28px);margin-top:.7rem;
  box-shadow:0 22px 46px -40px rgba(11,95,165,.8)}
.l-line{font-family:"Songti SC","Noto Serif SC",var(--sans);font-size:1rem;line-height:2.05;
  color:#22374a;min-height:1.35em;margin:0 0 .85rem;letter-spacing:.01em}
.l-line:last-of-type{margin-bottom:0}
.l-line.typing::after{content:"▍";margin-left:.08em;color:var(--blue);
  animation:caretBlink .85s steps(1) infinite}
@keyframes caretBlink{50%{opacity:0}}
.l-shot{margin-top:1.35rem;border-radius:10px;border:1px solid rgba(11,95,165,.14)}
.char-meta small{font-size:.78rem;letter-spacing:.02em}
.gate-sub{line-height:1.9}
@media (prefers-reduced-motion:reduce){.l-line.typing::after{content:"";animation:none}}

/* ---------- 结尾强调句 ---------- */
.l-shout{
  margin:1.6rem 0 0;text-align:center;font-size:clamp(1.02rem,2.3vw,1.22rem);
  font-weight:800;line-height:1.9;color:#0f2b43;letter-spacing:.01em;
  opacity:0;transform:translateY(12px) scale(.97);
  transition:opacity .8s var(--ease-out),transform .8s var(--ease-out);
}
.l-shout.on{opacity:1;transform:none}
.l-shout b{
  color:var(--blue-deep);font-weight:800;
  background:linear-gradient(transparent 58%,rgba(255,214,74,.75) 58%);
  padding:0 .1em;
}
@media (prefers-reduced-motion:reduce){.l-shout{transition:none}}

/* ===== 小屏细修（≤420px） ===== */
@media (max-width:420px){
  h1{font-size:1.82rem;line-height:1.5}
  .hero{padding-bottom:34px}
  .scroll-hint{display:none}
  .palette li{width:32px}
  .palette li::before{height:22px}
  .palette span{font-size:.44rem}
  .btn{height:44px;font-size:.9rem}
  .gate{padding:10px}
  .gate-panel{padding:18px 16px;border-radius:18px;max-height:90vh}
  .q-opt{padding:.7rem .85rem;font-size:.9rem}
  .char-card{padding:.85rem .9rem}
  .l-line{font-size:.94rem;line-height:1.95}
  .l-shout{font-size:1rem}
  .model-meta{gap:.6rem}
  .mm-text span{font-size:.62rem}
}

/* 首屏在手机上略收一点，让标题能进第一屏 */
@media (max-width:640px){
  .hero{padding-top:18px}
  .hero-art{margin-bottom:18px}
  .art-frame{width:min(100%,248px);padding:10px 10px 32px}
  .hero-inner{gap:22px}
}