/* =========================================================
   OWL · 咕咕 — 羽绒家纺独立站
   Single stylesheet. No external assets, no web fonts.
   ========================================================= */

:root{
  --paper:#F6F4EF;
  --paper-2:#EFEBE3;
  --paper-3:#E7E2D8;
  --ink:#101215;
  --ink-2:#2A2E34;
  --ink-soft:#5C6067;
  --line:rgba(16,18,21,.12);
  --line-soft:rgba(16,18,21,.07);
  --gold:#B08A55;
  --gold-soft:#C9AE86;

  --serif:"Songti SC","Noto Serif SC","Source Han Serif SC","SimSun",Georgia,serif;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --latin:"Helvetica Neue",Helvetica,Arial,sans-serif;

  --pad:clamp(20px,5vw,72px);
  --max:1320px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;scroll-padding-top:92px;}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto;} }

body{
  margin:0;
  background-color:var(--paper);
  background-image:
    radial-gradient(1100px 640px at 84% -6%, rgba(201,174,134,.16), transparent 62%),
    radial-gradient(900px 620px at 2% 104%, rgba(16,18,21,.045), transparent 64%);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
::selection{background:var(--gold);color:#fff;}

/* ---------- grain overlay ---------- */
.grain{
  position:fixed;inset:0;z-index:9999;pointer-events:none;
  opacity:.032;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* =========================================================
   HEADER
   ========================================================= */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .5s var(--ease),border-color .5s var(--ease),backdrop-filter .5s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(246,244,239,.82);
  backdrop-filter:saturate(1.2) blur(14px);
  -webkit-backdrop-filter:saturate(1.2) blur(14px);
  border-bottom-color:var(--line-soft);
}
.header-inner{
  max-width:var(--max);margin:0 auto;padding:22px var(--pad);
  display:flex;align-items:center;gap:32px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:26px;height:26px;color:var(--ink);}
.brand-name{
  font-family:var(--latin);font-size:14px;letter-spacing:.22em;
  text-transform:uppercase;font-weight:500;
}
.brand-name i{font-style:normal;color:var(--gold);}

.nav{display:flex;gap:30px;margin-left:auto;}
.nav a{
  font-size:13px;letter-spacing:.14em;color:var(--ink-2);
  position:relative;padding:4px 0;transition:color .3s var(--ease);
}
.nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--gold);transform:scaleX(0);transform-origin:left;
  transition:transform .4s var(--ease);
}
.nav a:hover{color:var(--ink);}
.nav a:hover::after{transform:scaleX(1);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:999px;font-size:13px;letter-spacing:.12em;
  border:1px solid transparent;cursor:pointer;
  transition:background .35s var(--ease),color .35s var(--ease),border-color .35s var(--ease),transform .35s var(--ease);
}
.btn-sm{padding:10px 20px;font-size:12px;}
.btn-solid{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn-solid:hover{background:var(--gold);border-color:var(--gold);transform:translateY(-2px);}
.btn-ghost{border-color:transparent;color:var(--ink-2);padding-left:4px;padding-right:4px;}
.btn-ghost:hover{color:var(--ink);}
.btn-ghost .arrow{transition:transform .35s var(--ease);}
.btn-ghost:hover .arrow{transform:translateX(5px);}
.btn-line{border-color:var(--line);color:var(--ink);}
.btn-line:hover{border-color:var(--ink);background:var(--ink);color:var(--paper);}

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position:relative;min-height:100svh;
  display:flex;flex-direction:column;justify-content:center;
  padding:calc(var(--pad) + 60px) var(--pad) 40px;
  max-width:var(--max);margin:0 auto;
}
.hero-inner{
  display:grid;grid-template-columns:1.15fr .85fr;
  gap:clamp(32px,6vw,90px);align-items:center;width:100%;
}

.kicker{
  display:flex;align-items:center;gap:10px;
  font-family:var(--latin);font-size:11px;letter-spacing:.3em;
  text-transform:uppercase;color:var(--ink-soft);margin:0 0 28px;
}
.kicker-dot{
  width:5px;height:5px;border-radius:50%;background:var(--gold);
  box-shadow:0 0 0 4px rgba(176,138,85,.13);
}

.display{
  font-family:var(--serif);font-weight:300;
  font-size:clamp(46px,7.6vw,112px);
  line-height:1.06;letter-spacing:.01em;
  margin:0 0 30px;color:var(--ink);
}
.display em{font-style:normal;color:var(--gold);}

.lede{
  font-size:clamp(15px,1.15vw,17px);line-height:2;
  color:var(--ink-soft);margin:0 0 40px;max-width:30em;
}

.hero-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap;}
.hero-note{
  margin:52px 0 0;font-family:var(--latin);
  font-size:10px;letter-spacing:.26em;text-transform:uppercase;
  color:var(--ink-soft);opacity:.72;
}

/* ---------- hero stage ---------- */
.hero-stage{width:100%;}
.stage-frame{
  position:relative;aspect-ratio:4/5;overflow:hidden;
  border:1px solid var(--line);
  background:
    radial-gradient(120% 90% at 50% 12%, #FFFFFF 0%, var(--paper-2) 46%, var(--paper-3) 100%);
  display:flex;align-items:center;justify-content:center;
}
.stage-frame::after{
  content:"";position:absolute;inset:14px;border:1px solid rgba(255,255,255,.5);pointer-events:none;
}
.plume{
  width:78%;height:auto;color:var(--gold);opacity:.92;
  filter:drop-shadow(0 16px 34px rgba(176,138,85,.10));
  animation:float 9s ease-in-out infinite;
}
@keyframes float{
  0%,100%{transform:translateY(0) rotate(0deg);}
  50%{transform:translateY(-14px) rotate(1.5deg);}
}
.stage-label{
  position:absolute;bottom:26px;left:0;right:0;text-align:center;
  font-size:11px;letter-spacing:.24em;color:var(--ink-soft);opacity:.62;
}
.stage-meta{
  display:flex;justify-content:space-between;
  margin-top:14px;font-family:var(--latin);
  font-size:10px;letter-spacing:.26em;text-transform:uppercase;color:var(--ink-soft);
}

/* ---------- scroll cue ---------- */
.scroll-cue{
  position:absolute;left:var(--pad);bottom:28px;
  display:flex;align-items:center;gap:12px;
  font-family:var(--latin);font-size:9px;letter-spacing:.3em;
  color:var(--ink-soft);opacity:.7;
}
.scroll-line{
  width:34px;height:1px;background:var(--ink-soft);position:relative;overflow:hidden;
}
.scroll-line::after{
  content:"";position:absolute;inset:0;background:var(--gold);
  transform:translateX(-100%);animation:slide 2.6s var(--ease) infinite;
}
@keyframes slide{
  0%{transform:translateX(-100%);}
  55%,100%{transform:translateX(100%);}
}

/* =========================================================
   TICKER
   ========================================================= */
.ticker{
  border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
  overflow:hidden;padding:16px 0;background:rgba(239,235,227,.4);
}
.ticker-track{
  display:flex;align-items:center;gap:clamp(28px,3vw,52px);
  width:max-content;animation:marquee 38s linear infinite;
}
.ticker span{
  font-family:var(--serif);font-size:clamp(15px,1.4vw,19px);
  letter-spacing:.28em;color:var(--ink-2);white-space:nowrap;
}
.ticker span i{
  font-family:var(--latin);font-style:normal;font-size:10px;
  letter-spacing:.3em;color:var(--gold);margin-left:10px;vertical-align:2px;
}
.ticker .sep{color:var(--gold);font-size:12px;letter-spacing:0;}
@keyframes marquee{
  from{transform:translateX(0);}
  to{transform:translateX(-50%);}
}

/* =========================================================
   SHARED SECTION
   ========================================================= */
.section{max-width:var(--max);margin:0 auto;padding:clamp(84px,11vw,150px) var(--pad);}
.section-label{
  font-family:var(--latin);font-size:10px;letter-spacing:.3em;
  text-transform:uppercase;color:var(--ink-soft);margin:0 0 26px;
}
.section-label i{font-style:normal;color:var(--gold);margin-left:10px;}
h2{
  font-family:var(--serif);font-weight:300;
  font-size:clamp(30px,3.8vw,54px);line-height:1.28;
  letter-spacing:.01em;margin:0;
}
.section-head{margin-bottom:clamp(48px,6vw,86px);}
.section-head.split{
  display:flex;justify-content:space-between;align-items:flex-end;gap:40px;flex-wrap:wrap;
}
.section-aside{
  font-size:12px;line-height:2;color:var(--ink-soft);
  letter-spacing:.04em;margin:0;text-align:right;
}

/* ---------- pillars ---------- */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:0;}
.pillar{
  padding:34px 34px 34px 0;
  border-top:1px solid var(--line);
}
.pillar + .pillar{padding-left:34px;border-left:1px solid var(--line-soft);}
.pillar .num{
  font-family:var(--latin);font-size:10px;letter-spacing:.26em;
  color:var(--gold);display:block;margin-bottom:46px;
}
.pillar h3{
  font-family:var(--serif);font-weight:400;font-size:clamp(20px,1.8vw,25px);
  margin:0 0 14px;letter-spacing:.06em;
}
.pillar p{
  font-size:13.5px;line-height:2;color:var(--ink-soft);margin:0;max-width:26em;
}

/* ---------- collection cards ---------- */
.collection-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:clamp(14px,1.6vw,24px);
  counter-reset:card;
}
.card{
  display:flex;flex-direction:column;cursor:pointer;
  transition:transform .5s var(--ease);
  counter-increment:card;
}
.card:hover{transform:translateY(-6px);}
.card-media{
  position:relative;aspect-ratio:3/4;overflow:hidden;
  background:linear-gradient(160deg,#FFFFFF 0%,var(--paper-2) 52%,var(--paper-3) 100%);
  border:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:center;
}
.card-media::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(255,255,255,.0),rgba(176,138,85,.06));
  opacity:0;transition:opacity .5s var(--ease);
}
.card:hover .card-media::before{opacity:1;}
.card-media span{
  font-size:11px;letter-spacing:.2em;color:var(--ink-soft);opacity:.55;
  transform:translateY(0);transition:transform .5s var(--ease);
}
.card-media::after{
  content:"0" counter(card);
  position:absolute;top:14px;left:16px;
  font-family:var(--latin);font-size:9px;letter-spacing:.24em;
  color:var(--ink-soft);opacity:.42;
}
.card:hover .card-media span{transform:translateY(-4px);}
.card-body{padding:18px 2px 0;}
.card-body h3{
  font-family:var(--serif);font-weight:400;font-size:clamp(17px,1.4vw,20px);
  margin:0 0 6px;letter-spacing:.05em;
}
.card-body h3 i{
  font-family:var(--latin);font-style:normal;font-size:10px;
  letter-spacing:.22em;color:var(--ink-soft);margin-left:8px;vertical-align:2px;
}
.card-body p{font-size:12px;color:var(--ink-soft);margin:0 0 14px;letter-spacing:.04em;}
.pill{
  display:inline-block;font-family:var(--latin);font-size:9px;
  letter-spacing:.24em;text-transform:uppercase;color:var(--gold);
  border:1px solid rgba(176,138,85,.35);border-radius:999px;padding:4px 10px;
}

/* ---------- craft ---------- */
.craft{background:var(--paper-2);max-width:none;padding-left:0;padding-right:0;}
.craft-grid{
  max-width:var(--max);margin:0 auto;padding:0 var(--pad);
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,100px);
  align-items:start;
}
.craft h2{margin:0 0 30px;}
.craft-text p{
  font-size:13.5px;line-height:2.1;color:var(--ink-soft);margin:0 0 22px;max-width:26em;
}
.craft-note{
  font-family:var(--latin);font-size:10px;letter-spacing:.22em;
  text-transform:uppercase;opacity:.6;
}

.layer-stack{
  border:1px solid var(--line);background:rgba(255,255,255,.42);
  padding:clamp(14px,2vw,24px);
}
.layer{
  display:flex;align-items:center;justify-content:space-between;
  padding:clamp(18px,2.6vw,30px) 20px;
  border:1px solid var(--line-soft);
  background:rgba(255,255,255,.6);
  margin-bottom:8px;
}
.layer:last-child{margin-bottom:0;}
.layer span{font-family:var(--serif);font-size:15px;letter-spacing:.16em;}
.layer i{
  font-family:var(--latin);font-style:normal;font-size:9px;
  letter-spacing:.26em;color:var(--ink-soft);
}
.layer-thin{padding-top:10px;padding-bottom:10px;background:rgba(255,255,255,.32);}
.layer-fill{
  padding:clamp(34px,5vw,54px) 20px;
  background:
    repeating-linear-gradient(135deg,rgba(176,138,85,.09) 0 8px,transparent 8px 16px),
    rgba(255,255,255,.5);
}

.stats{
  display:grid;grid-template-columns:1fr 1fr;
  margin-top:clamp(24px,3vw,36px);border-top:1px solid var(--line);
}
.stat{padding:24px 0;border-bottom:1px solid var(--line-soft);}
.stat:nth-child(odd){border-right:1px solid var(--line-soft);padding-right:24px;}
.stat:nth-child(even){padding-left:24px;}
.stat-k{display:block;font-size:12px;letter-spacing:.14em;color:var(--ink-2);margin-bottom:10px;}
.stat-v{
  font-family:var(--serif);font-size:clamp(30px,3vw,42px);line-height:1;
  color:var(--ink);display:block;margin-bottom:10px;
}
.stat i{
  font-family:var(--latin);font-style:normal;font-size:9px;
  letter-spacing:.26em;color:var(--ink-soft);opacity:.8;
}

/* ---------- about ---------- */
.about{text-align:center;}
.about-inner{max-width:900px;margin:0 auto;}
.about .section-label{margin-bottom:34px;}
.about-h{
  font-family:var(--serif);font-weight:300;
  font-size:clamp(26px,3.4vw,46px);line-height:1.42;
  letter-spacing:.02em;margin:0 0 32px;
}
.about-p{
  font-size:14px;line-height:2.1;color:var(--ink-soft);margin:0 0 46px;
}
.about-placeholder{
  display:inline-block;font-family:var(--latin);
  font-size:10px;letter-spacing:.3em;text-transform:uppercase;
  color:var(--ink-soft);border-bottom:1px solid var(--line);padding-bottom:8px;opacity:.7;
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{background:var(--ink);color:var(--paper);}
.footer-inner{
  max-width:var(--max);margin:0 auto;padding:clamp(60px,8vw,100px) var(--pad) 40px;
  display:grid;grid-template-columns:1.4fr .8fr .8fr 1.2fr;gap:40px;
}
.footer-brand .brand-name{font-size:14px;letter-spacing:.22em;}
.footer-brand p{
  font-size:12.5px;color:rgba(246,244,239,.55);margin:16px 0 0;letter-spacing:.06em;
}
.footer-col h4{
  font-family:var(--latin);font-size:9px;letter-spacing:.3em;
  text-transform:uppercase;color:rgba(246,244,239,.45);
  margin:0 0 20px;font-weight:400;
}
.footer-col a,.footer-col .muted{
  display:block;font-size:13px;color:rgba(246,244,239,.78);
  margin-bottom:10px;letter-spacing:.06em;transition:color .3s var(--ease);
}
.footer-col a:hover{color:var(--gold-soft);}
.footer-col .muted{color:rgba(246,244,239,.42);}
.footer-col .small{font-size:10px;letter-spacing:.18em;margin-top:12px;}

.subscribe{
  display:flex;align-items:center;gap:0;margin:4px 0 0;
  border-bottom:1px solid rgba(246,244,239,.22);max-width:260px;
}
.subscribe input{
  flex:1;background:transparent;border:0;padding:10px 0;
  font-size:12px;color:var(--paper);outline:none;letter-spacing:.06em;
}
.subscribe input::placeholder{color:rgba(246,244,239,.3);}
.subscribe button{
  background:transparent;border:0;color:rgba(246,244,239,.6);
  padding:10px 4px;cursor:not-allowed;font-size:15px;
}

.footer-bottom{
  max-width:var(--max);margin:0 auto;padding:26px var(--pad) 34px;
  border-top:1px solid rgba(246,244,239,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-family:var(--latin);font-size:10px;letter-spacing:.2em;
  text-transform:uppercase;color:rgba(246,244,239,.38);
}

/* =========================================================
   REVEAL
   ========================================================= */
.js .reveal{
  opacity:0;transform:translateY(26px);
  transition:opacity .9s var(--ease),transform .9s var(--ease);
  will-change:opacity,transform;
}
.js .reveal.in{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  .js .reveal{opacity:1;transform:none;transition:none;}
  .plume,.ticker-track,.scroll-line::after{animation:none;}
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:1100px){
  .collection-grid{grid-template-columns:repeat(2,1fr);gap:22px;}
  .footer-inner{grid-template-columns:1fr 1fr;gap:44px 32px;}
}

@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:44px;}
  .hero-stage{max-width:420px;margin:0 auto;width:100%;}
  .hero{min-height:auto;padding-top:calc(var(--pad) + 100px);padding-bottom:80px;}
  .scroll-cue{display:none;}
  .craft-grid{grid-template-columns:1fr;gap:48px;}
  .pillars{grid-template-columns:1fr;}
  .pillar{padding:26px 0;border-left:0!important;border-top:1px solid var(--line);}
  .pillar + .pillar{padding-left:0;}
  .pillar .num{margin-bottom:22px;}
  .section-aside{text-align:left;}
}

@media (max-width:640px){
  body{font-size:15px;}
  .nav{display:none;}
  .header-inner{padding:16px var(--pad);gap:0;}
  .header-inner .btn{margin-left:auto;}
  .collection-grid{grid-template-columns:1fr;}
  .card-media{aspect-ratio:4/3;}
  .footer-inner{grid-template-columns:1fr;gap:34px;}
  .display{font-size:clamp(38px,11.5vw,54px);}
  .footer-bottom{flex-direction:column;gap:10px;}
  .hero-note{font-size:9px;letter-spacing:.16em;line-height:2;}
  .stage-meta{font-size:9px;letter-spacing:.14em;gap:6px;flex-direction:column;align-items:flex-start;margin-top:10px;}
  .layer{flex-wrap:wrap;gap:4px;}
  .layer i{font-size:8px;letter-spacing:.18em;}
  .stats{grid-template-columns:1fr 1fr;}
  .stat:nth-child(odd){padding-right:14px;}
  .stat:nth-child(even){padding-left:14px;}
  .stat-v{font-size:28px;}
  .section{padding-top:70px;padding-bottom:70px;}
}