/* TIANQIYUAN — lean + FX heavy
   Navy #14213D · Amber #FFB020 */

:root {
  --navy: #14213D;
  --navy-deep: #070e1c;
  --navy-mid: #1a2b4d;
  --amber: #FFB020;
  --amber-hot: #ffc85a;
  --paper: #f4f0e8;
  --ink: #0f172a;
  --muted: #667085;
  --line: rgba(20,33,61,.12);
  --font: "PingFang SC","Hiragino Sans GB","Segoe UI","Microsoft YaHei",system-ui,sans-serif;
  --mono: "SF Mono","Cascadia Code",Consolas,Menlo,monospace;
  --shell: 1080px;
  --header: 64px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--paper);
  line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
.shell{width:min(100% - 2rem,var(--shell));margin-inline:auto}
.skip-link{position:absolute;left:-999px;top:0;z-index:999;background:var(--amber);color:var(--navy);padding:.55rem 1rem;font-weight:700}
.skip-link:focus{left:1rem;top:1rem}

/* Progress */
.scroll-progress{
  position:fixed;top:0;left:0;height:3px;width:0;z-index:120;
  background:linear-gradient(90deg,var(--amber),#fff3c4);
  box-shadow:0 0 12px rgba(255,176,32,.6);
  pointer-events:none;transform-origin:left center;
}

/* Cursor canvas */
.fx-cursor{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:100;display:none}
html.fx-on .fx-cursor{display:block}
html.fx-on body,html.fx-on a,html.fx-on button,html.fx-on input,html.fx-on textarea{cursor:none}

/* Header */
.site-header{
  position:sticky;top:0;z-index:80;height:var(--header);
  background:rgba(7,14,28,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.header-row{height:var(--header);display:flex;align-items:center;justify-content:space-between;gap:1rem}
.brand{display:flex;align-items:center;gap:.65rem;color:#fff;font-weight:720;letter-spacing:.06em}
.brand-mark{height:28px;width:auto;image-rendering:pixelated;image-rendering:crisp-edges}
.nav{display:flex;align-items:center;gap:1.25rem}
.nav a{color:rgba(255,255,255,.65);font-size:.92rem;font-weight:600}
.nav a:hover{color:#fff}
.nav-pill{
  padding:.4rem .9rem!important;background:var(--amber)!important;color:var(--navy)!important;font-weight:780!important;
  clip-path:polygon(0 0,calc(100% - 7px) 0,100% 7px,100% 100%,7px 100%,0 calc(100% - 7px));
  transition:box-shadow .2s,background .15s,transform .15s;
}
.nav-pill:hover{background:var(--amber-hot)!important}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid rgba(255,255,255,.18);background:0;flex-direction:column;justify-content:center;gap:6px;padding:10px;cursor:pointer}
.nav-toggle i{display:block;height:2px;background:#fff}

/* Type */
h1,h2,h3{margin:0;letter-spacing:-.03em;line-height:1.12;font-weight:800;color:var(--navy)}
h1{font-size:clamp(2.6rem,8vw,4.6rem);color:#fff}
h2{font-size:clamp(1.8rem,3.5vw,2.5rem)}
h3{font-size:1.15rem}
.amber{color:var(--amber)}
.glow-text{
  text-shadow:0 0 20px rgba(255,176,32,.45),0 0 48px rgba(255,176,32,.2);
  animation:glowPulse 2.6s ease-in-out infinite;
}
@keyframes glowPulse{
  0%,100%{text-shadow:0 0 16px rgba(255,176,32,.3),0 0 36px rgba(255,176,32,.12)}
  50%{text-shadow:0 0 28px rgba(255,176,32,.65),0 0 60px rgba(255,176,32,.3)}
}
.pending{
  display:inline-block;padding:.05rem .35rem;background:#ffe7b0;color:#7a4e00;font-size:.8em;font-weight:700;
  clip-path:polygon(0 0,calc(100% - 4px) 0,100% 4px,100% 100%,4px 100%,0 calc(100% - 4px));
}
.pending--dark{background:rgba(255,176,32,.18);color:var(--amber)}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:.85rem 1.35rem;font-weight:780;font-size:.98rem;border:none;cursor:pointer;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  transition:transform .15s,background .15s,box-shadow .2s;
  will-change:transform;
}
.btn-amber{background:var(--amber);color:var(--navy);box-shadow:0 0 0 rgba(255,176,32,0)}
.btn-amber:hover{background:var(--amber-hot);box-shadow:0 0 24px rgba(255,176,32,.45)}
.btn-ghost{background:transparent;color:rgba(255,255,255,.85);box-shadow:inset 0 0 0 2px rgba(255,255,255,.22)}
.btn-ghost:hover{box-shadow:inset 0 0 0 2px #fff;color:#fff}
.btn-block{width:100%}

/* HERO */
.hero{
  position:relative;min-height:calc(100vh - var(--header));
  background:var(--navy-deep);color:#fff;overflow:hidden;
  display:flex;flex-direction:column;justify-content:center;
  padding:3rem 0 4rem;
}
.hero-canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0;opacity:0}
html.fx-on .hero-canvas{opacity:1}
.hero-glow{
  position:absolute;width:min(55vw,560px);height:min(55vw,560px);right:-10%;top:8%;
  background:radial-gradient(circle,rgba(255,176,32,.4),transparent 68%);
  filter:blur(36px);pointer-events:none;z-index:0;opacity:0;
  mix-blend-mode:screen;transition:transform .15s linear;
}
html.fx-on .hero-glow{opacity:1;animation:orbPulse 5s ease-in-out infinite alternate}
@keyframes orbPulse{from{transform:scale(1)}to{transform:scale(1.18)}}
.hero-inner{
  position:relative;z-index:1;
  opacity:var(--scroll-fade,1);
  transition:opacity .1s linear;
  display:grid;grid-template-columns:1.15fr .85fr;gap:2rem;align-items:center;
}
.chip{
  display:inline-flex;align-items:center;gap:.5rem;margin:0 0 1.1rem;
  font-family:var(--mono);font-size:.75rem;letter-spacing:.14em;color:var(--amber);
  border:1px solid rgba(255,176,32,.3);padding:.3rem .65rem;background:rgba(255,176,32,.08);
}
.px-blink{width:8px;height:8px;background:var(--amber);display:inline-block;animation:blink 1.2s steps(2) infinite}
@keyframes blink{50%{opacity:.25}}
.lede{margin:1.1rem 0 1.6rem;font-size:1.1rem;color:rgba(255,255,255,.55);letter-spacing:.08em}
.hero-cta{display:flex;flex-wrap:wrap;gap:.7rem}

.hero-mark{display:flex;justify-content:flex-end}
.mark-frame{
  background:var(--paper);padding:2.2rem 1.8rem;
  clip-path:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,16px 100%,0 calc(100% - 16px));
  box-shadow:14px 14px 0 rgba(255,176,32,.4);
  transition:transform .2s ease,box-shadow .2s;
  transform-style:preserve-3d;
}
.mark-frame .tqy{width:min(260px,70vw);height:auto;image-rendering:pixelated;image-rendering:crisp-edges}
html.fx-on .mark-frame{animation:floatY 5.5s ease-in-out infinite}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

.hero-scroll-hint{
  position:absolute;bottom:1.25rem;left:50%;transform:translateX(-50%);
  display:flex;align-items:center;gap:.45rem;
  font-family:var(--mono);font-size:.68rem;letter-spacing:.2em;color:rgba(255,255,255,.35);z-index:1;
}
.hero-scroll-hint span{
  width:10px;height:16px;border:1px solid rgba(255,255,255,.3);
  position:relative;
}
.hero-scroll-hint span::after{
  content:"";position:absolute;top:3px;left:50%;width:4px;height:4px;margin-left:-2px;background:var(--amber);
  animation:scrollDot 1.4s ease-in-out infinite;
}
@keyframes scrollDot{0%{opacity:1;transform:translateY(0)}100%{opacity:0;transform:translateY(7px)}}

/* Caps */
.block{padding:5rem 0}
.work{background:var(--paper)}
.block-head{margin-bottom:2rem}
.block-head p{margin:.5rem 0 0;color:var(--muted)}
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.cap{
  background:#fff;border:1px solid var(--line);padding:1.35rem 1.2rem;
  transition:transform .25s cubic-bezier(.16,1,.3,1),box-shadow .25s,border-color .2s;
  will-change:transform;
}
.cap:hover,.cap.is-hot{
  border-color:rgba(255,176,32,.55);
  box-shadow:8px 8px 0 rgba(255,176,32,.35);
}
.cap-n{font-family:var(--mono);font-size:.75rem;color:var(--amber);letter-spacing:.08em;display:block;margin-bottom:.55rem}
.cap h3{margin-bottom:.35rem}
.cap p{margin:0;color:var(--muted);font-size:.95rem}

/* Contact */
.contact{background:var(--navy);color:rgba(255,255,255,.75)}
.contact h2{color:#fff}
.contact-inner{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem;align-items:start}
.contact-copy p{color:rgba(255,255,255,.55)}
.facts{list-style:none;margin:1.5rem 0 0;padding:0}
.facts li{
  display:grid;grid-template-columns:4rem 1fr;gap:.75rem;padding:.75rem 0;
  border-bottom:1px dashed rgba(255,255,255,.12);align-items:baseline;
}
.facts li>span:first-child{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;color:rgba(255,255,255,.4)}
.contact-form{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);padding:1.4rem;
  clip-path:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,14px 100%,0 calc(100% - 14px));
  box-shadow:10px 10px 0 rgba(255,176,32,.35);
}
.contact-form label{display:block;margin-bottom:.75rem}
.contact-form label span{display:block;font-size:.78rem;color:rgba(255,255,255,.45);margin-bottom:.3rem;font-weight:650}
.contact-form input,.contact-form textarea{
  width:100%;padding:.7rem .8rem;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);color:#fff;outline:0;border-radius:0;
}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--amber);background:rgba(255,176,32,.08)}
.contact-form textarea{resize:vertical;min-height:80px}
.form-hint{margin:.65rem 0 0;font-size:.75rem;color:rgba(255,255,255,.35)}
.form-status{margin:.6rem 0 0;font-size:.9rem;font-weight:700;min-height:1.2em}
.form-status.is-ok{color:var(--amber)}
.form-status.is-err{color:#ff8a80}

/* Footer */
.site-footer{background:var(--navy-deep);color:rgba(255,255,255,.45);padding:1.75rem 0;border-top:2px solid var(--amber)}
.footer-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem}
.footer-row img{height:24px;width:auto}
.footer-row p{margin:0;font-size:.82rem}

/* Reveal */
.reveal{
  opacity:0;transform:translateY(28px) scale(.97);filter:blur(6px);
  transition:opacity .75s cubic-bezier(.16,1,.3,1),transform .75s cubic-bezier(.16,1,.3,1),filter .75s ease;
  transition-delay:var(--d,0ms);
}
.reveal.is-visible{opacity:1;transform:none;filter:none}
html.fx-off .reveal{opacity:1;transform:none;filter:none;transition:none}

[data-parallax],[data-magnetic],[data-magnetic-soft],[data-tilt]{will-change:transform}

@media (max-width:900px){
  .hero-inner,.contact-inner{grid-template-columns:1fr}
  .cap-grid{grid-template-columns:1fr 1fr}
  .hero-mark{justify-content:flex-start}
}
@media (max-width:640px){
  .nav-toggle{display:flex}
  .nav{
    position:fixed;inset:var(--header) 0 auto 0;background:var(--navy-deep);
    flex-direction:column;align-items:stretch;padding:1rem 1.25rem;
    transform:translateY(-140%);opacity:0;pointer-events:none;transition:.25s;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav.is-open{transform:none;opacity:1;pointer-events:auto}
  .nav a{padding:.85rem 0;border-bottom:1px solid rgba(255,255,255,.06)}
  .nav-pill{margin-top:.5rem!important;text-align:center;border:0!important}
  .cap-grid{grid-template-columns:1fr}
  .block{padding:3.5rem 0}
  .facts li{grid-template-columns:1fr;gap:.2rem}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .glow-text,.px-blink,.hero-scroll-hint span::after,html.fx-on .mark-frame,html.fx-on .hero-glow{animation:none!important}
  .fx-cursor,.hero-canvas,.scroll-progress{display:none!important}
  html.fx-on body{cursor:auto}
  .reveal{opacity:1;transform:none;filter:none;transition:none}
}

.beian{color:inherit;opacity:.55;text-decoration:none;margin-left:.75rem;white-space:nowrap}.beian:hover{opacity:1;color:var(--amber,#FFB020)}
.footer-row p{display:flex;flex-wrap:wrap;gap:.35rem .25rem;align-items:center}