/* RENASON 2026 visual system
   Scientific restraint, cinematic scale, mobile-first touch ergonomics. */

:root{
  --void:#07100f;
  --void-2:#0b1714;
  --void-3:#13221d;
  --porcelain:#f1efe8;
  --porcelain-2:#e6e8df;
  --white:#fbfaf6;
  --ink:#101714;
  --ink-2:#3f4a45;
  --ink-3:#737d77;
  --amber:#c28d2c;
  --amber-deep:#886018;
  --amber-lt:#edc973;
  --carmine:#9f3653;
  --carmine-lt:#e37c97;
  --bio:#7d9b70;
  --bio-deep:#253f2d;
  --bio-pale:#dce4d7;
  --hair:rgba(16,23,20,.14);
  --hair-2:rgba(16,23,20,.24);
  --hair-d:rgba(241,239,232,.14);
  --hair-d2:rgba(241,239,232,.26);
  --cjk-d:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --pad:clamp(112px,11vw,184px);
  --gut:clamp(24px,4vw,68px);
  --max:1440px;
  --r:28px;
  --r-s:16px;
  --ease:cubic-bezier(.16,1,.3,1);
  --mx:50vw;
  --my:30vh;
}

html{background:var(--void);scroll-padding-top:96px}
body{
  background:var(--porcelain);
  font-weight:350;
  letter-spacing:.005em;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:3;
  pointer-events:none;
  opacity:.42;
  background:radial-gradient(440px circle at var(--mx) var(--my),rgba(178,211,169,.075),transparent 70%);
  mix-blend-mode:screen;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:linear-gradient(to bottom,#000,transparent 80%);
  mask-image:linear-gradient(to bottom,#000,transparent 80%);
}
.grain{opacity:.18;mix-blend-mode:soft-light;z-index:4}
.skip{
  position:fixed!important;
  left:16px!important;
  top:-100px!important;
  z-index:999!important;
  padding:12px 18px!important;
  border-radius:99px!important;
  background:var(--white)!important;
  color:var(--ink)!important;
  transition:top .2s!important;
}
.skip:focus{top:16px!important}
.progress{
  height:3px;
  z-index:120;
  background:linear-gradient(90deg,var(--bio),var(--amber-lt),var(--carmine-lt));
  box-shadow:0 0 18px rgba(237,201,115,.48);
}
::selection{background:var(--bio-deep);color:var(--white)}
:focus-visible{outline-color:var(--amber-lt);outline-width:2px}

/* Typography */
h1,h2,h3,h4{font-feature-settings:"palt" 1,"kern" 1}
.d-zh{
  font-family:var(--cjk-d);
  font-weight:400;
  letter-spacing:-.045em;
  line-height:1.12;
}
.d-en{
  font-weight:560;
  font-stretch:112%;
  letter-spacing:-.055em;
  line-height:.96;
}
.h-xl .d-zh{font-size:clamp(45px,6vw,88px)}
.h-xl .d-en{font-size:clamp(20px,2.7vw,37px);margin-top:.55em}
.h-lg .d-zh{font-size:clamp(34px,4.4vw,62px)}
.h-lg .d-en{font-size:clamp(17px,2.05vw,28px)}
.mono{font-size:11px;letter-spacing:.2em;font-weight:500}
.eyebrow{
  width:max-content;
  max-width:100%;
  gap:12px;
  padding:8px 13px;
  border:1px solid currentColor;
  border-radius:99px;
  line-height:1.25;
}
.eyebrow::before{width:6px;height:6px;border-radius:50%;box-shadow:0 0 0 4px color-mix(in srgb,currentColor 12%,transparent)}
.lede{font-size:clamp(17px,1.35vw,20px);line-height:1.92;max-width:64ch}
.note{font-size:12px;line-height:1.82}
b,strong{font-weight:650}

/* Floating, adaptive global navigation */
header{
  top:14px;
  padding:0;
  pointer-events:none;
  border:0;
}
header.solid{padding:0;background:transparent;border:0;backdrop-filter:none}
header .hbar{
  width:calc(100% - 28px);
  max-width:1480px;
  min-height:62px;
  margin:0 auto;
  padding:10px 14px 10px 20px;
  border:1px solid rgba(241,239,232,.14);
  border-radius:18px;
  background:rgba(7,16,15,.68);
  box-shadow:0 18px 60px rgba(0,0,0,.16);
  backdrop-filter:blur(22px) saturate(1.25);
  -webkit-backdrop-filter:blur(22px) saturate(1.25);
  pointer-events:auto;
  transition:background .45s var(--ease),border-color .45s var(--ease),box-shadow .45s var(--ease),transform .45s var(--ease);
}
header.solid .hbar{background:rgba(7,16,15,.88);box-shadow:0 18px 68px rgba(0,0,0,.24)}
header.on-light .hbar,
header.solid.on-light .hbar{
  background:rgba(241,239,232,.86);
  border-color:rgba(16,23,20,.12);
  box-shadow:0 18px 58px rgba(21,32,27,.1);
}
.logo{height:18px;max-width:126px;object-fit:contain}
.nav{gap:3px}
.nav a{
  padding:8px 11px;
  border-radius:99px;
  font-size:13px;
  letter-spacing:.025em;
  font-weight:500;
  transition:color .25s,background .3s var(--ease),transform .3s var(--ease);
}
.nav a::after{display:none}
.nav a:hover{background:rgba(255,255,255,.07);transform:translateY(-1px)}
.nav a.is-active{background:rgba(237,201,115,.13);color:var(--amber-lt)}
header.on-light .nav a:hover{background:rgba(16,23,20,.055)}
header.on-light .nav a.is-active{background:rgba(194,141,44,.11);color:var(--amber-deep)}
.tools{gap:9px}
.lang{
  display:grid;
  place-items:center;
  width:42px;
  height:42px;
  padding:0;
  border-radius:50%;
  font-size:10px;
  background:rgba(255,255,255,.035);
}
.mobile-current{
  display:none;
  align-items:center;
  gap:7px;
  min-height:38px;
  padding:0 11px;
  border:1px solid var(--hair-d);
  border-radius:99px;
  color:rgba(241,239,232,.76);
  font-family:var(--cjk);
  font-size:12px;
  font-weight:500;
  white-space:nowrap;
}
.mobile-current::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--amber-lt);box-shadow:0 0 9px var(--amber-lt)}
header.on-light .mobile-current{color:var(--ink-2);border-color:var(--hair)}

/* Full-screen route directory */
.sheet{
  z-index:78;
  padding:104px 0 32px;
  justify-content:flex-start;
  overflow:auto;
  background:
    radial-gradient(900px 600px at 85% 12%,rgba(125,155,112,.23),transparent 70%),
    radial-gradient(620px 520px at 10% 88%,rgba(159,54,83,.13),transparent 70%),
    var(--void);
  transform:translateY(-104%);
  transition:transform .72s var(--ease);
}
.sheet::before{
  content:"RENASON / RESEARCH DIRECTORY";
  display:block;
  max-width:980px;
  margin:0 auto 28px;
  padding:0 var(--gut);
  color:var(--amber-lt);
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.22em;
}
.sheet .wrap{width:100%;max-width:980px;counter-reset:route}
.sheet a{
  counter-increment:route;
  display:grid;
  grid-template-columns:46px 1fr auto;
  align-items:center;
  gap:10px;
  padding:16px 0;
  transition:padding .35s var(--ease),color .25s;
}
.sheet a::before{
  content:counter(route,decimal-leading-zero);
  grid-column:1;
  grid-row:1 / 3;
  align-self:center;
  color:var(--amber-lt);
  font:500 10px/1 var(--mono);
  letter-spacing:.14em;
}
.sheet .zh{grid-column:2;grid-row:1}
.sheet .en{grid-column:2;grid-row:2}
.sheet a::after{content:"↗";grid-column:3;grid-row:1 / 3;align-self:center;font-size:20px;color:rgba(241,239,232,.35);transition:transform .35s var(--ease),color .25s}
.sheet a:hover{padding-left:12px;color:var(--amber-lt)}
.sheet a:hover::after{transform:translate(4px,-4px);color:var(--amber-lt)}
.sheet .zh{font-family:var(--cjk-d);font-size:clamp(21px,3vw,34px);font-weight:400;letter-spacing:-.03em}

/* Page transition */
.route-curtain{
  position:fixed;
  inset:0;
  z-index:200;
  display:grid;
  place-items:center;
  background:
    radial-gradient(520px 420px at 50% 50%,rgba(125,155,112,.18),transparent 72%),
    var(--void);
  color:var(--porcelain);
  transform:translateY(0);
  transition:transform .78s var(--ease);
  pointer-events:none;
}
.route-curtain::before,.route-curtain::after{content:"";position:absolute;background:var(--hair-d)}
.route-curtain::before{left:0;right:0;height:1px;top:50%}
.route-curtain::after{top:0;bottom:0;width:1px;left:50%}
.route-curtain span{position:relative;z-index:1;padding:11px 16px;border:1px solid var(--hair-d);border-radius:99px;background:var(--void);font:500 10px/1 var(--mono);letter-spacing:.24em}
.route-curtain.is-ready{transform:translateY(-101%)}
.route-curtain.is-leaving{transform:translateY(0);transition-duration:.52s}

/* Section architecture */
.wrap{max-width:var(--max)}
main{position:relative;z-index:2}
main>section{isolation:isolate;overflow:hidden;border-bottom:1px solid var(--hair)}
main>section.dark{border-bottom-color:var(--hair-d)}
main>section:not(.hero)::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  pointer-events:none;
  opacity:.5;
  background:
    linear-gradient(90deg,transparent calc(50% - .5px),rgba(16,23,20,.055) 50%,transparent calc(50% + .5px)),
    radial-gradient(820px 540px at 94% 0,rgba(125,155,112,.11),transparent 72%);
}
main>section.dark:not(.hero)::before{
  opacity:1;
  background:
    linear-gradient(90deg,transparent calc(50% - .5px),rgba(241,239,232,.035) 50%,transparent calc(50% + .5px)),
    radial-gradient(760px 560px at 92% 8%,rgba(125,155,112,.13),transparent 72%),
    radial-gradient(680px 520px at 6% 92%,rgba(194,141,44,.07),transparent 70%);
}
.ui-section-index{
  position:absolute;
  z-index:1;
  top:clamp(92px,9vw,148px);
  right:max(var(--gut),calc((100vw - var(--max))/2 + var(--gut)));
  color:rgba(16,23,20,.075);
  font:600 clamp(66px,10vw,150px)/.8 var(--disp);
  letter-spacing:-.08em;
  pointer-events:none;
  user-select:none;
}
.dark .ui-section-index{color:rgba(241,239,232,.045)}
.head{max-width:1050px}
.head h2{margin-top:24px}
.head .lede{margin-top:34px}

/* Home: cinematic split composition */
.hero{
  min-height:max(760px,100svh);
  padding-top:136px;
  background:
    radial-gradient(880px 620px at 76% 37%,rgba(125,155,112,.11),transparent 68%),
    var(--void);
}
.hero::before{
  content:"";
  position:absolute;
  z-index:1;
  width:min(52vw,780px);
  aspect-ratio:1;
  right:-9vw;
  top:8vh;
  border:1px solid rgba(237,201,115,.08);
  border-radius:50%;
  box-shadow:0 0 0 80px rgba(125,155,112,.018),0 0 0 180px rgba(125,155,112,.012);
  pointer-events:none;
}
.hero::after{background:linear-gradient(90deg,rgba(7,16,15,.92) 0,rgba(7,16,15,.5) 52%,rgba(7,16,15,.18) 100%),radial-gradient(120% 90% at 62% 42%,transparent 20%,rgba(7,16,15,.66) 73%,var(--void) 100%)}
.hero-in{
  display:grid;
  grid-template-columns:minmax(0,1.45fr) minmax(330px,.55fr);
  grid-template-rows:auto auto auto;
  align-items:end;
  column-gap:clamp(54px,8vw,130px);
  padding-bottom:clamp(58px,7vw,104px);
}
.hero-meta{grid-column:1/-1;margin-bottom:38px}
.hero h1{grid-column:1;grid-row:2/4;margin:0}
.hero h1 .d-zh{font-size:clamp(56px,7.5vw,116px);line-height:.98;letter-spacing:-.06em}
.hero h1 .d-en{font-size:clamp(25px,3vw,44px);margin-top:.46em;color:rgba(241,239,232,.43)}
.hero .lede{grid-column:2;grid-row:2;margin:0 0 28px;align-self:end;font-size:16px;line-height:1.95;color:rgba(241,239,232,.7)}
.hero .cta-row{grid-column:2;grid-row:3;margin:0;align-self:start}
.btn{
  min-height:52px;
  justify-content:center;
  padding:14px 25px;
  border-radius:99px;
  font-size:14px;
  font-weight:500;
  overflow:hidden;
  position:relative;
}
.btn::after{content:"↗";font-size:14px;transition:transform .3s var(--ease)}
.btn:hover::after{transform:translate(3px,-3px)}
.btn-a{background:var(--amber-lt);color:#191207;box-shadow:0 14px 42px rgba(194,141,44,.16)}
.btn-b{background:rgba(255,255,255,.035)}
.readout{margin-top:0;padding:17px 0;border-bottom:1px solid var(--hair-d);background:rgba(7,16,15,.38);backdrop-filter:blur(12px)}
.rd-track{animation-duration:64s}

#materials{background:#0a1512;padding-top:clamp(106px,10vw,168px)}
#materials .head{max-width:920px}
.mcards{gap:16px;margin-top:clamp(58px,7vw,104px)}
.mcard{
  min-height:520px;
  padding:clamp(32px,4vw,58px);
  border-radius:var(--r);
  border-color:rgba(241,239,232,.12);
  box-shadow:inset 0 1px rgba(255,255,255,.025),0 24px 70px rgba(0,0,0,.12);
  transition:transform .7s var(--ease),border-color .45s,box-shadow .7s var(--ease);
}
.mcard::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  opacity:0;
  background:linear-gradient(135deg,rgba(255,255,255,.05),transparent 45%);
  transition:opacity .45s;
}
.mcard:hover{transform:translateY(-10px);box-shadow:inset 0 1px rgba(255,255,255,.04),0 38px 90px rgba(0,0,0,.24)}
.mcard:hover::before{opacity:1}
.mcard.amber{background:radial-gradient(520px 420px at 88% 20%,rgba(194,141,44,.17),transparent 68%),#0b1210}
.mcard.carmine{background:radial-gradient(520px 420px at 84% 20%,rgba(159,54,83,.18),transparent 68%),#0b1210}
.material-index{font-size:clamp(84px,10vw,150px);opacity:.055}
.material-card-top{position:relative;z-index:2}
.material-open{position:relative;z-index:2;margin-top:auto}
.material-route span{padding:8px 12px;background:rgba(255,255,255,.025)}

/* Light scientific surfaces */
#ecm,#evidence,#apply,#faq,#umbilical{background:var(--porcelain)}
#leukocyte{background:#ece8e6}
#brand{background:var(--bio-pale)}
#umbilical{background:radial-gradient(900px 620px at 100% 0,rgba(194,141,44,.12),transparent 70%),var(--porcelain)}
#leukocyte{background:radial-gradient(900px 620px at 100% 0,rgba(159,54,83,.1),transparent 70%),#ece8e6}
#vesicle,#data,#about,#contact,#filings{background:var(--void)}

.split{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(52px,8vw,132px)}
.ecm-intro{gap:clamp(54px,8vw,128px)}
.ecm-equation{
  padding:30px 0;
  border-top:1px solid var(--hair-2);
  border-bottom:1px solid var(--hair-2);
  font-size:clamp(22px,2.15vw,32px);
}
.ecm-map{gap:14px}
.ecm-part{
  border:1px solid var(--hair);
  border-radius:22px;
  background:rgba(255,255,255,.28);
  box-shadow:0 18px 54px rgba(28,42,34,.055);
  overflow:hidden;
}
.ecm-flip{border-radius:22px}
.ecm-front,.ecm-back{padding:clamp(25px,3vw,40px)}
.ecm-front{background:linear-gradient(145deg,rgba(255,255,255,.45),rgba(255,255,255,.05))}
.route-card{
  position:relative;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r);
  box-shadow:0 26px 72px rgba(20,25,22,.12);
}
.route-card.a{background:linear-gradient(145deg,#8d651b,#66470f)}
.route-card.b{background:linear-gradient(145deg,#9f3653,#6f1e37)}
.route-card::after{content:"";position:absolute;width:220px;aspect-ratio:1;border:1px solid rgba(255,255,255,.12);border-radius:50%;right:-70px;top:-70px;box-shadow:0 0 0 36px rgba(255,255,255,.025)}

.proof-flow{gap:14px}
.proof-step{
  min-height:240px;
  padding:clamp(28px,3vw,44px);
  border:1px solid var(--hair);
  border-radius:22px;
  background:rgba(255,255,255,.3);
  transition:transform .55s var(--ease),background .35s,border-color .35s;
}
.proof-step:hover{transform:translateY(-7px);background:rgba(255,255,255,.58);border-color:var(--hair-2)}
.stat-band{border-radius:var(--r);overflow:hidden;box-shadow:0 28px 84px rgba(20,29,25,.12)}
.stat{min-height:250px;padding:clamp(28px,3.4vw,48px)}

/* Ingredient dossier */
.mat-top{gap:clamp(48px,7vw,118px)}
.mat-top .head{position:sticky;top:116px}
.spec{border-top:1px solid var(--hair-2)}
.spec>div{padding:20px 0;grid-template-columns:140px 1fr}
.spec dt{font-size:13px;font-weight:500;color:var(--ink-3)}
.spec dd{font-weight:400;color:var(--ink-2)}
.packaging-feature{
  margin-top:clamp(74px,9vw,136px);
  padding:clamp(18px,2vw,28px);
  border:1px solid var(--hair);
  border-radius:var(--r);
  background:rgba(255,255,255,.26);
  box-shadow:0 28px 90px rgba(33,43,38,.08);
}
.packaging-visual{border-radius:22px;overflow:hidden;background:linear-gradient(145deg,rgba(255,255,255,.7),rgba(255,255,255,.16));box-shadow:inset 0 1px rgba(255,255,255,.6)}
.packaging-visual img{transition:transform 1.1s var(--ease),filter .7s}
.packaging-feature:hover .packaging-visual img{transform:scale(1.025) translateY(-4px);filter:saturate(1.03)}
.packaging-copy{padding:clamp(20px,3vw,44px)}
.packaging-format{border-radius:14px;background:rgba(255,255,255,.32)}
.packaging-format span{
  margin-top:9px;
  font-size:clamp(13px,1vw,15px);
  font-weight:500;
  letter-spacing:.08em;
  color:var(--ink-2);
}
.bars{margin-top:clamp(76px,8vw,126px)}
.brow{
  padding:clamp(28px,3.8vw,54px) 0;
  border-top-color:var(--hair-2);
  transition:background .4s,padding .5s var(--ease);
}
.brow:hover{padding-left:20px;padding-right:20px;background:rgba(255,255,255,.22)}
.bhead .nm{font-size:clamp(23px,2.5vw,36px);letter-spacing:-.03em}
.bhead .num{font-size:clamp(42px,5vw,74px)}
.why{font-size:16px;line-height:1.9;color:var(--ink-2)}

/* Evidence comparison */
.comparison-stack{margin-top:clamp(58px,7vw,100px);border-top:1px solid var(--hair-d)}
.comparison-item{
  display:grid;
  grid-template-columns:minmax(240px,.72fr) minmax(0,1.28fr);
  gap:clamp(42px,7vw,112px);
  padding:clamp(58px,6.5vw,94px) 0;
  border-bottom:1px solid var(--hair-d);
}
.comparison-heading{position:sticky;top:118px;align-self:start}
.comparison-index{color:var(--amber-lt)}
.comparison-body{min-width:0}
.comparison-bar{padding:22px 0;border-bottom:1px solid var(--hair-d)}
.comparison-bar .track{height:5px;border-radius:99px;overflow:hidden}
.comparison-note{margin-top:28px;padding:24px;border:1px solid var(--hair-d);border-radius:16px;background:rgba(255,255,255,.025)}

/* Manufacturing, application and filed-product systems */
.abt{gap:1px;border:1px solid var(--hair-d);border-radius:var(--r);overflow:hidden;background:var(--hair-d)}
.abt>div{min-height:230px;padding:clamp(28px,3vw,44px);background:var(--void-2);transition:background .35s}
.abt>div:hover{background:var(--void-3)}
.facility{gap:14px}
.facility figure{border-radius:22px;overflow:hidden;box-shadow:0 24px 70px rgba(0,0,0,.18)}
.facility figure img{transition:transform 1s var(--ease)}
.facility figure:hover img{transform:scale(1.035)}
.appgrid{gap:14px}
.app{
  min-height:310px;
  padding:clamp(28px,3vw,44px);
  border:1px solid var(--hair);
  border-radius:22px;
  background:rgba(255,255,255,.25);
  transition:transform .55s var(--ease),box-shadow .55s var(--ease),background .35s;
}
.app:hover{transform:translateY(-7px);background:rgba(255,255,255,.5);box-shadow:0 28px 72px rgba(29,40,34,.09)}
.case-grid{gap:16px}
.case-panel{
  padding:clamp(30px,3.5vw,52px);
  border:1px solid var(--hair-d);
  border-radius:var(--r);
  background:linear-gradient(145deg,rgba(255,255,255,.045),rgba(255,255,255,.012));
}
.case-row{grid-template-columns:minmax(0,1fr) minmax(230px,auto);gap:24px;padding:19px 0}
.case-name{font-size:16px;line-height:1.55;min-width:0}
.filing-no{font-size:11px;white-space:nowrap;align-self:center}

/* Brand editorial */
.brand-story{min-height:calc(100svh - 1px);display:flex;align-items:center}
#brand{color:var(--ink)}
#brand .brand-kicker .eyebrow{color:var(--amber-deep)}
#brand .brand-kicker{border-bottom-color:rgba(37,63,45,.2)}
#brand .brand-code{color:rgba(16,23,20,.42)}
.brand-editorial{width:100%}
.brand-wordmark{
  font-size:clamp(92px,17vw,260px);
  line-height:.72;
  letter-spacing:-.09em;
  color:rgba(37,63,45,.09);
  white-space:nowrap;
}
.brand-claim{font-family:var(--cjk-d);font-size:clamp(42px,6.5vw,94px);line-height:1.08;letter-spacing:-.055em}
#brand .brand-claim{color:#17251f;font-weight:450}
.brand-copy{border-left:1px solid rgba(37,63,45,.28);padding-left:clamp(24px,3vw,48px)}
#brand .brand-copy p,#brand .brand-copy p+p{color:rgba(16,23,20,.72)}
#brand .brand-copy em{color:var(--amber-deep)}
.brand-values{gap:1px;border:1px solid rgba(37,63,45,.18);border-radius:var(--r);overflow:hidden;background:rgba(37,63,45,.18)}
.brand-values article{padding:clamp(28px,3vw,44px);background:rgba(241,239,232,.44)}
#brand .brand-values .value-no{color:var(--amber-deep)}
#brand .brand-values h3{color:var(--ink)}
#brand .brand-values h3 em{color:var(--ink-3)}
#brand .brand-values p{color:var(--ink-2)}

/* FAQ and contact */
.faq-layout{grid-template-columns:minmax(260px,.62fr) minmax(0,1.38fr);gap:clamp(60px,9vw,148px)}
.faq-intro{position:sticky;top:118px}
.faq-list{border-top:1px solid var(--hair-2)}
.faq-list details{border-bottom-color:var(--hair-2)}
.faq-list summary{padding:27px 0;font-size:clamp(19px,1.7vw,25px)}
.fq-plus{border:1px solid var(--hair);border-radius:50%}
.inquiry{
  border:1px solid var(--hair-d);
  border-radius:var(--r);
  overflow:hidden;
  background:linear-gradient(145deg,rgba(255,255,255,.055),rgba(255,255,255,.012));
  box-shadow:0 30px 90px rgba(0,0,0,.18);
}
.inquiry-copy{background:radial-gradient(520px 420px at 100% 0,rgba(125,155,112,.13),transparent 70%)}
.field input,.field select,.field textarea{
  border:1px solid var(--hair-d);
  border-radius:13px;
  padding:13px 15px;
  background:rgba(255,255,255,.035);
  transition:border-color .25s,background .25s,box-shadow .25s;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:rgba(237,201,115,.58);background:rgba(255,255,255,.055);box-shadow:0 0 0 4px rgba(237,201,115,.07)}
.ct-lines>div{padding:19px 0;border-bottom:1px solid var(--hair-d)}

/* Footer and persistent conversion cue */
footer{background:#050b0a;border-top:1px solid var(--hair-d);padding:42px 0}
.foot{min-height:58px}
.foot-links{display:flex;align-items:center;gap:18px;margin-left:auto}
.foot .mps-beian{
  display:inline-flex;
  align-items:center;
  gap:7px;
  min-height:32px;
  padding:4px 0;
  border-bottom:1px solid transparent;
  color:rgba(241,239,232,.56);
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.055em;
  white-space:nowrap;
  transition:color .25s,border-color .25s;
}
.foot .mps-beian img{display:block;width:18px;height:20px;object-fit:contain;flex:0 0 auto}
.foot .mps-beian:hover{color:var(--amber-lt);border-color:var(--amber-lt)}
.foot .internal-ppt{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 0;
  border-bottom:1px solid transparent;
  color:rgba(241,239,232,.56);
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.07em;
  transition:color .25s,border-color .25s;
}
.foot .internal-ppt::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 4px rgba(237,201,115,.08)}
.foot .internal-ppt:hover{color:var(--amber-lt);border-color:var(--amber-lt)}
.float-cta{
  z-index:70;
  right:20px;
  bottom:20px;
  min-height:50px;
  padding:7px 7px 7px 19px;
  border:1px solid rgba(16,23,20,.1);
  box-shadow:0 18px 56px rgba(0,0,0,.22);
  backdrop-filter:blur(16px);
  transition:transform .4s var(--ease),box-shadow .4s;
}
.float-cta:hover{transform:translateY(-4px);box-shadow:0 24px 68px rgba(0,0,0,.28)}
.float-cta i{background:var(--amber);width:38px;height:38px}

/* Reveal rhythm */
.rv{transform:translate3d(0,48px,0);transition:opacity .85s var(--ease),transform 1.15s var(--ease)}
.head.rv>*{transform:translate3d(0,40px,0);transition-duration:.78s,1.08s,.5s;transition-timing-function:var(--ease),var(--ease),ease}
.brow{transform:translate3d(0,36px,0)}

/* Desktop home: keep the evidence rail in the visual lower third and let the
   next chapter enter the viewport instead of leaving a deep empty tail. */
@media(min-width:781px){
  .hero{min-height:clamp(740px,90svh,980px)}
  .hero-in{padding-bottom:clamp(122px,18svh,210px)}
  .hero>.readout{padding-block:14px}
}

@media(min-width:1181px){
  .hero .hero-in{
    max-width:1600px;
    grid-template-columns:minmax(0,1fr) minmax(330px,370px);
    column-gap:clamp(52px,5vw,88px);
  }
  .hero h1 .d-zh{
    font-size:clamp(70px,6vw,104px);
    white-space:nowrap;
  }
}

@media(max-width:1180px){
  .nav{display:none}
  .burger{display:block}
  .mobile-current{display:inline-flex}
  .hero-in{grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr);column-gap:44px}
  .hero h1 .d-zh{font-size:clamp(54px,7.8vw,90px)}
  .case-row{grid-template-columns:1fr;gap:7px}
  .filing-no{white-space:normal}
}

@media(max-width:780px){
  :root{--gut:18px;--pad:92px;--r:22px;--r-s:14px}
  html{scroll-padding-top:82px}
  body{font-size:16px;line-height:1.78}
  body::before,body::after{display:none}
  .grain{opacity:.12}
  .mono{font-size:10px;letter-spacing:.17em}
  .eyebrow{padding:7px 11px;white-space:normal}
  .h-xl .d-zh{font-size:clamp(36px,10.8vw,50px);line-height:1.14}
  .h-xl .d-en{font-size:clamp(17px,5.4vw,23px);line-height:1.05}
  .h-lg .d-zh{font-size:clamp(31px,9vw,42px)}
  .h-lg .d-en{font-size:17px}
  .lede{font-size:16px;line-height:1.88}

  header{top:max(8px,env(safe-area-inset-top))}
  header .hbar{
    width:calc(100% - 16px);
    min-height:58px;
    padding:8px 9px 8px 13px;
    border-radius:17px;
    gap:8px;
  }
  .logo{height:17px;max-width:104px}
  .mobile-current{margin-left:auto;max-width:94px;overflow:hidden;text-overflow:ellipsis;padding:0 9px;font-size:11px}
  .tools{gap:5px}
  .lang{width:38px;height:38px;font-size:9px}
  .burger{width:38px;height:38px;border:1px solid var(--hair-d);border-radius:50%}
  header.on-light .burger{border-color:var(--hair)}
  .burger i{left:10px;right:10px}
  .burger i:nth-child(1){top:14px}.burger i:nth-child(2){top:22px}
  body.nav-open .burger i:nth-child(1),body.nav-open .burger i:nth-child(2){top:18px}

  .sheet{padding:78px 0 max(18px,env(safe-area-inset-bottom))}
  .sheet::before{margin-bottom:5px;padding:0 20px;font-size:8.5px}
  .sheet .wrap{
    display:grid;
    grid-auto-rows:clamp(44px,calc((100vh - 132px)/8),96px);
    grid-auto-rows:clamp(44px,calc((100svh - 132px)/8),96px);
    padding:0 20px;
  }
  .sheet a{height:100%;min-height:0;grid-template-columns:27px 1fr 23px;column-gap:6px;row-gap:0;padding:clamp(4px,1svh,10px) 0;align-content:center}
  .sheet a:hover{padding-left:0}
  .sheet .zh{font-size:20px;line-height:1.15}
  .sheet .en{font-size:8.5px;line-height:1.2;margin-top:0}
  .sheet a::before{font-size:9px;letter-spacing:.1em}
  .sheet a::after{font-size:15px}
  body.en-mode .sheet .en{grid-row:1 / 3;align-self:center}

  .route-curtain span{font-size:9px;letter-spacing:.16em}
  main>section{scroll-margin-top:78px}
  main>section:not(.hero)::before{background:radial-gradient(480px 360px at 100% 0,rgba(125,155,112,.1),transparent 72%)}
  .ui-section-index{top:80px;right:18px;font-size:58px;color:rgba(16,23,20,.06)}
  .dark .ui-section-index{color:rgba(241,239,232,.04)}
  .head h2{margin-top:19px}
  .head .lede{margin-top:25px}

  .hero{
    min-height:auto;
    padding:112px 0 0;
    text-align:center;
    justify-content:flex-start;
  }
  .hero::before{width:88vw;right:-28vw;top:12vh}
  .hero::after{background:radial-gradient(100% 58% at 50% 30%,transparent 18%,rgba(7,16,15,.5) 74%,var(--void) 100%)}
  .hero-in{display:block;padding-bottom:46px}
  .hero-meta{justify-content:center;margin-bottom:26px;text-align:center}
  .hero h1{margin:0 auto}
  .hero h1 .d-zh{font-size:clamp(43px,12.7vw,57px);line-height:1.08;letter-spacing:-.055em}
  .hero h1 .d-en{font-size:clamp(21px,6.4vw,27px);line-height:1.05;margin-top:.58em}
  .hero .lede{margin:30px auto 0;font-size:15.5px;line-height:1.9;text-align:center}
  .hero .cta-row{display:grid;grid-template-columns:1fr;gap:10px;margin-top:30px}
  .hero .btn{width:100%}
  .readout{padding:14px 0}

  #materials{padding-top:80px}
  #materials .head{text-align:left}
  .mcards{grid-template-columns:1fr;gap:14px;margin-top:48px}
  .mcard{min-height:410px;padding:28px 24px;border-radius:22px}
  .mcard:hover{transform:none}
  .material-index{font-size:92px}
  .material-route{gap:6px}
  .material-route span{font-size:11px}

  .split,.ecm-intro,.faq-layout{grid-template-columns:1fr;gap:46px}
  .mat-top .head,.comparison-heading,.faq-intro{position:relative;top:auto}
  .ecm-equation{padding:23px 0;font-size:22px;line-height:1.65}
  .ecm-map{gap:10px}
  .ecm-part,.ecm-flip{border-radius:18px}
  .ecm-front,.ecm-back{padding:24px 21px}
  .ecm-route{gap:12px}
  .route-card{padding:26px 22px;border-radius:20px}
  .route-card .proof-list .meaning{font-size:15px}
  .proof-flow{grid-template-columns:1fr;gap:10px}
  .proof-step{min-height:0;padding:27px 23px;border-radius:18px}
  .stat-band{grid-template-columns:1fr;border-radius:20px}
  .stat{min-height:0;padding:30px 23px}

  .mat-top{grid-template-columns:1fr;gap:42px}
  .spec>div{grid-template-columns:92px minmax(0,1fr);gap:14px;padding:17px 0}
  .spec dt,.spec dd{font-size:14px}
  .packaging-feature{grid-template-columns:1fr;margin-top:64px;padding:10px;border-radius:20px}
  .packaging-visual{border-radius:15px;min-height:0;aspect-ratio:auto}
  .packaging-visual img{height:auto;object-fit:contain;transform:none!important;filter:none!important}
  .packaging-feature:hover .packaging-visual img{transform:none!important;filter:none!important}
  .packaging-copy{padding:23px 14px 18px}
  .packaging-formats{grid-template-columns:1fr}
  .bars{margin-top:66px}
  .brow{padding:30px 0}
  .brow:hover{padding-left:0;padding-right:0;background:transparent}
  .bhead{grid-template-columns:1fr auto;gap:14px}
  .bhead .nm{font-size:23px}
  .bhead .num{font-size:38px}
  .bexp{grid-template-columns:1fr;gap:15px}
  .why{font-size:15px;line-height:1.88}

  .comparison-item{grid-template-columns:1fr;gap:24px;padding:52px 0}
  .comparison-heading{padding-bottom:4px}
  .comparison-bar{padding:18px 0}
  .comparison-note{padding:20px 17px;border-radius:14px}

  .abt{grid-template-columns:1fr;border-radius:20px}
  .abt>div{min-height:0;padding:28px 23px}
  .facility{grid-template-columns:1fr;overflow:visible}
  .facility figure,.facility figure:first-child{min-height:260px;border-radius:18px}
  .appgrid{grid-template-columns:1fr;gap:10px}
  .app{min-height:0;padding:28px 23px;border-radius:18px}
  .case-grid{grid-template-columns:1fr;gap:12px}
  .case-panel{padding:27px 20px;border-radius:20px}
  .case-row{grid-template-columns:1fr;gap:7px;padding:17px 0}
  .case-name{font-size:15.5px}
  .filing-no{font-size:10.5px;line-height:1.65;white-space:normal}

  .brand-story{min-height:auto;padding-top:112px}
  .brand-wordmark{font-size:clamp(66px,23vw,102px);line-height:.82;letter-spacing:-.08em;white-space:nowrap;transform:none}
  .brand-claim{font-size:clamp(36px,11vw,49px);line-height:1.12}
  .brand-copy{padding-left:20px}
  .brand-values{grid-template-columns:1fr;border-radius:20px}
  .brand-values article{padding:26px 22px}

  .faq-layout{gap:42px}
  .faq-list summary{padding:23px 0;font-size:19px}
  .inquiry{grid-template-columns:1fr;margin-top:34px;border-radius:20px}
  .inquiry-copy,.inquiry-fields{padding:28px 22px}
  .field input,.field select,.field textarea{min-height:52px;font-size:16px}

  footer{padding:38px 0 max(68px,calc(52px + env(safe-area-inset-bottom)))}
  .foot{gap:18px}
  .foot .logo{height:18px;max-width:124px}
  .foot-links{width:100%;margin-left:0;flex-wrap:wrap;gap:14px 18px}
  .foot .mps-beian{flex-basis:100%;max-width:100%;white-space:normal;line-height:1.45;letter-spacing:.035em}
  .foot .mps-beian img{margin-top:1px}
  .float-cta{
    right:12px;
    bottom:max(12px,env(safe-area-inset-bottom));
    min-height:48px;
    max-width:calc(100vw - 24px);
    padding-left:16px;
    background:rgba(247,246,240,.93);
  }
  .float-cta i{width:34px;height:34px}

  .rv{transform:translate3d(0,30px,0)}
  .head.rv>*{transform:translate3d(0,28px,0)}
}

@media(max-width:390px){
  .hero h1 .d-zh{font-size:41px}
  .hero h1 .d-en{font-size:20px}
  .brand-wordmark{font-size:21.5vw}
}

@media(max-width:340px){
  .mobile-current{display:none}
}

@media(hover:none){
  .mcard:hover,.proof-step:hover,.app:hover,.float-cta:hover{transform:none}
}

@media(prefers-reduced-motion:reduce){
  .route-curtain{display:none}
  .packaging-visual img,.facility figure img{transition:none}
}

@media print{
  .route-curtain,.mobile-current{display:none!important}
  body::before,body::after{display:none!important}
}

/* Project request confirmation and server handoff */
.contact-trap{
  position:absolute!important;
  left:-10000px!important;
  width:1px!important;
  height:1px!important;
  overflow:hidden!important;
  opacity:0!important;
  pointer-events:none!important;
}
body.request-modal-open{overflow:hidden}
.request-modal[hidden]{display:none}
.request-modal{
  position:fixed;
  inset:0;
  z-index:1000;
  display:grid;
  place-items:center;
  padding:clamp(18px,4vw,54px);
  opacity:0;
  pointer-events:none;
  transition:opacity .32s ease;
}
.request-modal.is-open{opacity:1;pointer-events:auto}
.request-modal-backdrop{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  border:0;
  border-radius:0;
  background:rgba(2,8,7,.76);
  -webkit-backdrop-filter:blur(18px) saturate(.82);
  backdrop-filter:blur(18px) saturate(.82);
  cursor:pointer;
}
.request-dialog{
  position:relative;
  isolation:isolate;
  width:min(760px,100%);
  max-height:min(850px,calc(100svh - 36px));
  overflow:auto;
  padding:clamp(30px,4vw,52px);
  border:1px solid rgba(237,201,115,.3);
  border-radius:30px;
  color:var(--porcelain);
  background:
    radial-gradient(circle at 88% 8%,rgba(159,54,83,.16),transparent 35%),
    radial-gradient(circle at 8% 90%,rgba(125,155,112,.12),transparent 34%),
    linear-gradient(145deg,rgba(16,28,24,.985),rgba(5,12,11,.99));
  box-shadow:0 42px 120px rgba(0,0,0,.5),inset 0 1px rgba(255,255,255,.06);
  transform:translateY(24px) scale(.975);
  transition:transform .5s var(--ease);
  scrollbar-width:thin;
  scrollbar-color:rgba(237,201,115,.35) transparent;
}
.request-dialog::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  pointer-events:none;
  border-radius:inherit;
  opacity:.2;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:42px 42px;
  -webkit-mask-image:linear-gradient(to bottom,#000,transparent 80%);
  mask-image:linear-gradient(to bottom,#000,transparent 80%);
}
.request-modal.is-open .request-dialog{transform:none}
.request-modal-topline{
  display:flex;
  align-items:center;
  gap:12px;
  width:calc(100% - 50px);
  margin-bottom:30px;
  color:var(--amber-lt);
  font-family:var(--mono);
  font-size:9px;
  font-weight:500;
  letter-spacing:.2em;
}
.request-modal-topline i{height:1px;flex:1;background:linear-gradient(90deg,rgba(237,201,115,.48),transparent)}
.request-modal-close{
  position:absolute;
  top:22px;
  right:22px;
  width:42px;
  height:42px;
  display:grid;
  place-items:center;
  border:1px solid var(--hair-d2);
  border-radius:50%;
  background:rgba(255,255,255,.035);
  color:var(--porcelain);
  cursor:pointer;
  transition:border-color .25s,background .25s,transform .25s;
}
.request-modal-close span{font:300 27px/1 var(--disp);transform:translateY(-1px)}
.request-modal-close:hover{border-color:var(--amber-lt);background:rgba(237,201,115,.1);transform:rotate(8deg)}
.request-dialog>.eyebrow{margin:0 0 13px;color:var(--amber-lt)}
.request-dialog h3{
  margin:0;
  max-width:16ch;
  font-family:var(--cjk-d);
  font-size:clamp(28px,4vw,42px);
  font-weight:500;
  line-height:1.22;
  letter-spacing:.025em;
}
.request-modal-lede{margin:18px 0 27px;max-width:58ch;color:rgba(241,239,232,.62);font-size:14.5px;line-height:1.85}
.request-summary{
  display:grid;
  grid-template-columns:1fr 1fr;
  margin:0;
  border-top:1px solid var(--hair-d2);
  border-left:1px solid var(--hair-d2);
}
.request-summary>div{
  min-width:0;
  padding:18px 20px 19px;
  border-right:1px solid var(--hair-d2);
  border-bottom:1px solid var(--hair-d2);
  background:rgba(255,255,255,.022);
}
.request-summary>div.wide{grid-column:1/-1}
.request-summary dt{
  margin-bottom:8px;
  color:rgba(241,239,232,.43);
  font-family:var(--mono);
  font-size:9.5px;
  font-weight:500;
  letter-spacing:.13em;
  text-transform:uppercase;
}
.request-summary dd{
  margin:0;
  overflow-wrap:anywhere;
  white-space:pre-wrap;
  color:var(--white);
  font-size:15px;
  font-weight:500;
  line-height:1.65;
}
.request-delivery{
  position:relative;
  margin:20px 0 0;
  padding:15px 17px 15px 40px;
  border:1px solid rgba(125,155,112,.26);
  border-radius:14px;
  background:rgba(125,155,112,.08);
  color:rgba(241,239,232,.67);
  font-size:12.5px;
  line-height:1.72;
}
.request-delivery::before{
  content:"✓";
  position:absolute;
  left:16px;
  top:14px;
  color:#b8d3ac;
  font-family:var(--mono);
  font-weight:600;
}
.request-modal-status{min-height:20px;margin:13px 0 0;color:var(--carmine-lt);font-size:12.5px;line-height:1.6}
.request-modal-status.is-success{color:#b8d3ac}
.request-modal-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:10px}
.request-modal-actions .btn{min-width:144px;justify-content:center;border:1px solid var(--hair-d2)}
.request-modal-actions .request-cancel{background:rgba(255,255,255,.035);color:var(--porcelain)}
.request-modal-actions .request-confirm{border-color:var(--amber-lt)}
.request-confirm[disabled]{cursor:wait;opacity:.66;transform:none}
.form-status.is-success{color:#b8d3ac}
.form-status.is-error{color:#ef9aad}

@media(max-width:700px){
  .request-modal{place-items:end center;padding:0}
  .request-dialog{
    width:100%;
    max-height:96svh;
    padding:28px 20px max(24px,calc(18px + env(safe-area-inset-bottom)));
    border-width:1px 0 0;
    border-radius:25px 25px 0 0;
    transform:translateY(45px);
  }
  .request-modal-topline{margin-bottom:24px}
  .request-modal-close{top:17px;right:18px;width:40px;height:40px}
  .request-dialog h3{font-size:29px}
  .request-modal-lede{margin:14px 0 21px;font-size:13.5px}
  .request-summary{grid-template-columns:1fr 1fr}
  .request-summary>div{padding:14px 14px 15px}
  .request-summary dd{font-size:14px}
  .request-summary>div.wide{grid-column:1/-1}
  .request-delivery{margin-top:16px;padding:13px 14px 13px 37px;font-size:11.5px}
  .request-delivery::before{left:14px;top:12px}
  .request-modal-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .request-modal-actions .btn{min-width:0;width:100%;min-height:50px;padding-inline:12px}
}

@media(max-width:350px){
  .request-summary{grid-template-columns:1fr}
  .request-summary>div.wide{grid-column:auto}
}

@media(prefers-reduced-motion:reduce){
  .request-modal,.request-dialog{transition:none}
}