/* ============================================================
   Shuyan Feng — personal site
   Apple-inspired system: white surfaces, near-black ink,
   one blue accent, soft pink→orange decorative glow.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root{
  --bg:#F5F7FC;
  --surface:#FFFFFF;
  --ink:#0A0A0A;
  --ink-2:#5b5d66;
  --ink-3:#8a8d96;
  --line:rgba(10,10,10,0.08);
  --line-2:rgba(10,10,10,0.12);
  --blue:#0066cc;
  --blue-strong:#0071e3;
  --link:#0066CC;
  --link-strong:#0071e3;
  --pink:#f5447e;
  --pink-2:#ff7aa3;
  --glow-pink:#FA7EA0;
  --glow-orange:#FF9479;
  --nav-h:64px;
  --maxw:1100px;
  --gutter:84px;
  --ease:cubic-bezier(.22,.61,.36,1);
  font-synthesis-weight:none;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'SF Pro Display','Segoe UI',sans-serif;
  font-size:17px;
  line-height:1.55;
  letter-spacing:-0.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:var(--link);text-decoration:none;}
a:hover{text-decoration:underline;}
img{display:block;max-width:100%;}

/* ---------- Nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:1000;
  background:rgba(245,247,252,0.72);
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;height:100%;
  padding:0 28px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.nav-brand{
  font-weight:800;font-size:21px;letter-spacing:-0.03em;white-space:nowrap;
  color:#f5447e;
  display:flex;align-items:center;gap:9px;
}
.nav-brand:hover{text-decoration:none;opacity:.8;}
.nav-logo{
  width:28px;height:28px;border-radius:50%;
  flex-shrink:0;
  position:relative;
  overflow:hidden;
}
.nav-logo img{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:50%;
}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none;margin:0;padding:0;}
.nav-links a{
  color:var(--ink);font-weight:500;font-size:15px;letter-spacing:-0.01em;
  padding:7px 14px;border-radius:980px;transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-links a:hover{text-decoration:none;background:rgba(10,10,10,0.05);}
.nav-links a[aria-current="page"]{color:var(--link);font-weight:600;}
.nav-toggle{display:none;}

@media (max-width:760px){
  .nav-inner{padding:0 18px;}
  .nav-links{gap:0;}
  .nav-links a{padding:7px 9px;font-size:13.5px;}
  .nav-brand{font-size:17px;}
}
@media (max-width:480px){
  .nav-links a{padding:6px 7px;font-size:12px;}
}

/* ---------- Layout ---------- */
.page{padding-top:var(--nav-h);}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);}
@media (max-width:900px){:root{--gutter:48px;}}
@media (max-width:560px){:root{--gutter:20px;}}
.section{padding:84px 0;}
@media (max-width:760px){.section{padding:54px 0;}}

/* page header band */
.page-head{
  text-align:center;padding:118px var(--gutter) 50px;position:relative;overflow:hidden;
}
.page-head .eyebrow{
  color:var(--pink);font-weight:700;font-size:13px;letter-spacing:.14em;text-transform:uppercase;margin:0 0 18px;
}
.page-head h1{
  font-size:clamp(40px,6vw,72px);line-height:1.04;letter-spacing:-0.035em;font-weight:800;margin:0;
}
.page-head .lede{
  max-width:640px;margin:20px auto 0;color:var(--ink-2);font-size:clamp(18px,2.2vw,21px);
  line-height:1.5;font-weight:400;
}

/* ---------- Typography helpers ---------- */
h2.title{font-size:clamp(28px,4vw,44px);line-height:1.08;letter-spacing:-0.03em;font-weight:800;margin:0 0 8px;}
.sub{color:var(--ink-2);font-size:18px;font-weight:400;}
.eyebrow{color:var(--pink);font-weight:700;font-size:13px;letter-spacing:.14em;text-transform:uppercase;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--ink);color:#fff;font-weight:500;font-size:16px;
  padding:13px 26px;border-radius:980px;transition:transform .15s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.btn:hover{text-decoration:none;background:#262626;transform:translateY(-1px);box-shadow:0 10px 24px -10px rgba(10,10,10,.4);}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line-2);padding:13px 22px;}
.btn-ghost:hover{background:rgba(10,10,10,0.04);transform:none;box-shadow:none;}
.btn-arrow::after{content:"›";font-size:19px;line-height:1;transform:translateY(-1px);}

/* ---------- Cards / tiles ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:24px;
  padding:34px;transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.tile-link{display:block;color:inherit;}
.tile-link:hover{text-decoration:none;}
.tile-link:hover .card{transform:translateY(-4px);box-shadow:0 18px 50px -20px rgba(10,10,10,0.18);}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* ---------- Footer ---------- */
.foot{
  border-top:1px solid var(--line);margin-top:40px;padding:40px 0 56px;
  color:var(--ink-3);font-size:13px;line-height:1.7;
}
.foot a{color:var(--ink-2);}
.foot-top{display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px;margin-bottom:26px;}
.foot-links{display:flex;flex-wrap:wrap;gap:22px;}
.foot-links a{font-size:14px;font-weight:500;}
.foot-rule{border:0;border-top:1px solid var(--line);margin:0 0 18px;}

/* image slot defaults */
image-slot{--is-bg:#fdeef2;}

/* ============================================================
   SAKURA / PORTFOLIO THEME
   ============================================================ */

/* ---------- Reference-style hero ---------- */
.shero{position:relative;overflow:hidden;padding:calc(var(--nav-h) + 30px) var(--gutter) 70px;
  background:
    radial-gradient(120% 80% at 50% -10%, #fff 0%, var(--bg) 55%),
    var(--bg);
}
.shero-inner{max-width:880px;margin:0 auto;text-align:center;position:relative;z-index:3;}
.shero h1{
  font-size:clamp(40px,7vw,86px);line-height:1.02;letter-spacing:-0.04em;font-weight:800;margin:0;
  opacity:0;transform:translateY(26px);animation:rise .9s var(--ease) .05s forwards;
}
.shero h1 .accent{
  background:linear-gradient(100deg,var(--pink),var(--glow-orange));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.shero .sub{
  margin:20px auto 0;max-width:560px;color:var(--ink-2);font-size:clamp(16px,2vw,20px);font-weight:400;
  opacity:0;transform:translateY(20px);animation:rise .9s var(--ease) .18s forwards;
}

/* portrait in glowing disc */
.portrait-wrap{
  position:relative;width:min(460px,86vw);margin:-24px auto 0;z-index:2;
  opacity:0;transform:scale(.92);animation:pop 1s var(--ease) .25s forwards;
}
.portrait-disc{
  position:absolute;left:50%;top:2%;transform:translateX(-50%);
  width:128%;aspect-ratio:1/1;border-radius:50%;z-index:0;
  background:radial-gradient(circle at 50% 44%,
    rgba(255,148,121,.85) 0%, rgba(250,126,160,.7) 46%, rgba(250,126,160,0) 68%);
  filter:blur(6px);
  animation:breathe 7s ease-in-out infinite;
}
.portrait-wrap img{position:relative;z-index:1;width:100%;display:block;mix-blend-mode:screen;
  height:clamp(380px,52vh,540px);object-fit:cover;object-position:50% 12%;
  -webkit-mask-image:radial-gradient(ellipse 72% 66% at 50% 40%, #000 56%, transparent 82%);
          mask-image:radial-gradient(ellipse 72% 66% at 50% 40%, #000 56%, transparent 82%);}

/* animated tagline field under portrait */
.shero-banner{position:relative;z-index:3;max-width:880px;margin:-8px auto 0;text-align:center;
  opacity:0;transform:translateY(20px);animation:rise .9s var(--ease) .35s forwards;}
.shero-banner .field{
  display:inline-block;padding:28px 44px;border-radius:28px;
  background:rgba(255,255,255,0.72);backdrop-filter:blur(12px);
  border:1.5px solid rgba(245,68,126,0.22);
  box-shadow:0 28px 70px -28px rgba(245,68,126,0.6);
  font-size:clamp(26px,3.8vw,44px);line-height:1.18;letter-spacing:-0.03em;font-weight:700;
  max-width:820px;position:relative;overflow:hidden;}
.shero-banner .field::before{display:none;}
.shero-banner .field strong{
  background:linear-gradient(100deg,var(--pink),var(--glow-orange));
  -webkit-background-clip:text;background-clip:text;color:transparent;font-weight:700;}
.shero-banner .field .shine{display:block;color:var(--ink);font-weight:700;}
.shero-banner .field .grad{display:block;background:linear-gradient(100deg,var(--pink),var(--glow-orange));-webkit-background-clip:text;background-clip:text;color:transparent;margin-top:4px;}

@keyframes rise{to{opacity:1;transform:none;}}
@keyframes pop{to{opacity:1;transform:none;}}
@keyframes breathe{0%,100%{transform:translateX(-50%) scale(1);opacity:.95;}50%{transform:translateX(-50%) scale(1.05);opacity:1;}}
@keyframes shine{0%{background-position:120% 0;}100%{background-position:-120% 0;}}
@keyframes shootLight{0%{left:-100%;}50%{left:100%;}100%{left:100%;}}

/* ---------- Sakura petals ---------- */
.petals{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:1;}
.petal{position:absolute;top:-6%;will-change:transform,opacity;
  background:linear-gradient(135deg,#ffe2ea 0%,#ff9bb8 60%,#ff7aa3 100%);
  border-radius:100% 0 100% 0;
  box-shadow:0 0 8px rgba(255,150,180,.55);
  animation-name:petalfall,petalsway;animation-timing-function:linear,ease-in-out;
  animation-iteration-count:infinite,infinite;}
@keyframes petalfall{
  0%{transform:translateY(-10vh) rotate(0deg);opacity:0;}
  8%{opacity:.95;}
  90%{opacity:.95;}
  100%{transform:translateY(110vh) rotate(540deg);opacity:0;}
}
@keyframes petalsway{0%{margin-left:0;}50%{margin-left:46px;}100%{margin-left:0;}}
@media (prefers-reduced-motion:reduce){
  .petal{display:none;}
  .shero h1,.shero .sub,.portrait-wrap,.shero-banner{opacity:1;transform:none;animation:none;}
  .shero-banner .field .shine{animation:none;}
  .portrait-disc{animation:none;}
}

/* ---------- Career-journey timeline (resume) ---------- */
.ctl{position:relative;max-width:980px;margin:10px auto 0;display:grid;grid-template-columns:1fr;}
.ctl::before{content:"";position:absolute;left:20px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(var(--pink),var(--glow-orange));opacity:.4;}
.cnode{position:relative;display:grid;grid-template-columns:40px 1fr;gap:20px;padding:0 0 32px 0;margin-left:0;width:100% !important;}
.cnode::after{content:"";position:absolute;left:5px;top:4px;width:14px;height:14px;border-radius:50%;
  background:var(--pink);box-shadow:0 0 0 5px var(--bg),0 0 0 6px rgba(245,68,126,.25);right:auto !important;}
.cnode:nth-child(odd)::after{left:5px;}
.cnode:nth-child(even)::after{left:5px;}
.ccard{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:26px 28px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);}
.ccard:hover{transform:translateY(-3px);box-shadow:0 20px 50px -26px rgba(245,68,126,.35);}
.ccard .cidx{font-size:clamp(34px,4vw,52px);font-weight:800;letter-spacing:-0.05em;line-height:1;
  background:linear-gradient(120deg,var(--pink),var(--glow-orange));-webkit-background-clip:text;background-clip:text;color:transparent;}
.ccard h3{font-size:20px;letter-spacing:-0.02em;font-weight:700;margin:8px 0 3px;line-height:1.2;}
.ccard .co{color:var(--pink);font-weight:600;font-size:14.5px;margin:0;}
.ccard .desc{color:var(--ink-3);font-size:13px;margin:2px 0 0;}
.ccard ul{margin:13px 0 0;padding:0;list-style:none;}
.ccard ul li{position:relative;padding:0 0 8px 16px;color:var(--ink-2);font-size:14.5px;line-height:1.5;}
.ccard ul li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--pink-2);}
@media (max-width:760px){
  .ctl::before{left:7px;}
  .cnode{grid-template-columns:40px 1fr;gap:20px;padding:0 0 26px 0;margin-left:0 !important;}
  .cnode::after{left:5px !important;right:auto !important;}
}

/* ---------- Masonry (media / testimonials) ---------- */
.masonry{column-count:3;column-gap:22px;}
@media (max-width:880px){.masonry{column-count:2;}}
@media (max-width:560px){.masonry{column-count:1;}}
.masonry > *{break-inside:avoid;margin:0 0 22px;display:block;}
.tcard{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:24px;}
.tcard .thead{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.tcard .tav{width:42px;height:42px;border-radius:50%;overflow:hidden;flex:none;border:1px solid var(--line);background:#fde7ee;}
.tcard .tav img{width:100%;height:100%;object-fit:cover;object-position:50% 20%;}
.tcard .twho{font-weight:700;font-size:15px;letter-spacing:-0.01em;line-height:1.15;}
.tcard .trole{color:var(--ink-3);font-size:12.5px;}
.tcard .stars{margin-left:auto;color:var(--pink);font-size:13px;letter-spacing:1px;white-space:nowrap;}
.tcard .outlet{font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--pink);margin-bottom:8px;}
.tcard h4{font-size:18px;letter-spacing:-0.02em;font-weight:700;margin:0 0 7px;line-height:1.25;}
.tcard p{color:var(--ink-2);font-size:14.5px;line-height:1.55;margin:0;}
.tcard .when{color:var(--ink-3);font-size:12.5px;margin-top:12px;}
.mphoto{border-radius:22px;overflow:hidden;border:1px solid var(--line);}
.mphoto image-slot{display:block;width:100%;}

/* ---------- Get-in-touch contact ---------- */
.touch{position:relative;overflow:hidden;padding:90px var(--gutter) 40px;
  background:
    radial-gradient(70% 50% at 50% 118%, rgba(255,148,121,.55), transparent 70%),
    radial-gradient(80% 55% at 18% 112%, rgba(250,126,160,.5), transparent 72%),
    radial-gradient(80% 55% at 82% 112%, rgba(255,170,190,.55), transparent 72%),
    linear-gradient(to bottom, var(--bg) 0%, #fdeef2 60%, #ffdfe7 100%);
}
.touch .cloud{position:absolute;left:0;right:0;bottom:-40px;height:280px;pointer-events:none;
  background:radial-gradient(60% 90% at 30% 100%, rgba(255,255,255,.9), transparent 70%),
             radial-gradient(60% 90% at 70% 100%, rgba(255,255,255,.85), transparent 70%),
             radial-gradient(50% 80% at 50% 100%, rgba(255,255,255,.95), transparent 72%);
  filter:blur(6px);}
.touch-inner{position:relative;z-index:2;max-width:700px;margin:0 auto;text-align:center;}
.touch h1{font-size:clamp(40px,6vw,72px);line-height:1.04;letter-spacing:-0.035em;font-weight:800;margin:0;}
.touch .lede{max-width:520px;margin:16px auto 0;color:var(--ink-2);font-size:clamp(16px,2vw,20px);}
.touch form{margin:38px auto 0;text-align:left;}
.touch .row{display:flex;gap:16px;}
.touch .row > *{flex:1;}
.touch .field{margin-bottom:16px;}
.touch input,.touch textarea{
  width:100%;font:inherit;font-size:16px;color:var(--ink);background:rgba(255,255,255,0.82);
  border:1px solid rgba(255,255,255,0.9);border-radius:16px;padding:16px 18px;
  box-shadow:0 10px 30px -20px rgba(245,68,126,.5);transition:border-color .2s,box-shadow .2s;
}
.touch input::placeholder,.touch textarea::placeholder{color:#9aa0a6;}
.touch input:focus,.touch textarea:focus{outline:none;border-color:var(--pink);box-shadow:0 0 0 3px rgba(245,68,126,.18);}
.touch textarea{resize:vertical;min-height:150px;}
.touch .send{display:flex;justify-content:center;margin-top:6px;}
.touch .send .btn{border:0;cursor:pointer;}
.touch-methods{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:30px auto 0;}
.touch-methods a{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,0.7);
  border:1px solid rgba(255,255,255,0.9);border-radius:980px;padding:10px 18px;color:var(--ink);
  font-size:14px;font-weight:500;box-shadow:0 8px 24px -18px rgba(245,68,126,.5);}
.touch-methods a:hover{text-decoration:none;background:#fff;}