/* ============================================================
   鼓豆猫 GU DOU MAO — 大連豆製品専門工場
   Visual system: Japanese B2B precision
   ============================================================ */

:root{
  --paper:#FAF8F4;
  --paper2:#F3EFE7;
  --ink:#14120F;
  --ink2:#4A443B;
  --ink3:#8B8375;
  --navy:#16324F;
  --navy2:#1E4066;
  --gold:#9A7B4F;
  --line:rgba(20,18,15,.13);
  --line2:rgba(20,18,15,.07);

  --serif:"Noto Serif JP","Yu Mincho","YuMincho","Hiragino Mincho ProN","Songti SC",serif;
  --sans:"Noto Sans JP","Yu Gothic","YuGothic","Hiragino Kaku Gothic ProN","PingFang SC","Microsoft YaHei",sans-serif;

  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);

  --pad:clamp(20px,5vw,72px);
  --maxw:1240px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:15.5px;
  line-height:1.9;
  letter-spacing:.015em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* 纸纹噪点 */
body::before{
  content:"";
  position:fixed;inset:0;
  pointer-events:none;z-index:1;
  opacity:.035;
  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='4'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:500;font-family:var(--serif);letter-spacing:.02em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}

/* ---------- preloader ---------- */
#pre{
  position:fixed;inset:0;z-index:200;
  background:var(--paper);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;
  transition:opacity .7s var(--ease),visibility .7s;
}
#pre.done{opacity:0;visibility:hidden}
#pre .mark{
  font-family:var(--serif);font-size:clamp(22px,3vw,30px);
  letter-spacing:.34em;color:var(--ink);
  opacity:0;animation:fadeUp .9s var(--ease-out) .1s forwards;
}
#pre .bar{width:132px;height:1px;background:var(--line);overflow:hidden}
#pre .bar i{display:block;height:100%;width:0;background:var(--ink);animation:load 1.1s var(--ease-out) .25s forwards}
@keyframes load{to{width:100%}}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------- scroll progress ---------- */
#prog{
  position:fixed;top:0;left:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--navy),var(--gold));
  z-index:120;transition:width .1s linear;
}

/* ---------- header ---------- */
header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .45s var(--ease),box-shadow .45s var(--ease),padding .45s var(--ease);
  padding:18px 0;
}
header.scrolled{
  background:rgba(250,248,244,.92);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  box-shadow:0 1px 0 var(--line2);
  padding:10px 0;
}
.nav{display:flex;align-items:center;gap:clamp(16px,3vw,48px)}

.brand{display:flex;align-items:baseline;gap:10px;flex-shrink:0}
.brand b{
  font-family:var(--serif);font-size:20px;font-weight:600;letter-spacing:.16em;
}
.brand span{
  font-size:9.5px;letter-spacing:.3em;color:var(--ink3);
  font-family:var(--sans);font-weight:500;
  transform:translateY(-1px);
}
@media(max-width:560px){.brand span{display:none}}

.menu{display:flex;gap:clamp(12px,2vw,30px);margin-left:auto}
.menu a{
  font-size:12.5px;letter-spacing:.09em;color:var(--ink2);
  position:relative;padding:6px 0;transition:color .3s var(--ease);
  white-space:nowrap;
}
.menu a::after{
  content:"";position:absolute;left:0;bottom:2px;height:1px;width:0;
  background:var(--ink);transition:width .4s var(--ease);
}
.menu a:hover,.menu a.active{color:var(--ink)}
.menu a:hover::after,.menu a.active::after{width:100%}
@media(max-width:1000px){.menu{display:none}}

.lang{display:flex;gap:2px;margin-left:8px;border:1px solid var(--line);border-radius:2px;overflow:hidden}
.lang button{
  font-size:10.5px;letter-spacing:.1em;padding:5px 9px;color:var(--ink3);
  transition:background .3s var(--ease),color .3s var(--ease);
}
.lang button:hover{color:var(--ink);background:var(--paper2)}
.lang button.on{background:var(--navy);color:#fff}

.burger{display:none;width:34px;height:34px;position:relative;margin-left:auto}
.burger i{
  position:absolute;left:6px;right:6px;height:1.5px;background:var(--ink);
  transition:transform .4s var(--ease),opacity .3s;
}
.burger i:nth-child(1){top:12px}
.burger i:nth-child(2){bottom:12px}
.burger.on i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.burger.on i:nth-child(2){transform:translateY(-5px) rotate(-45deg)}
@media(max-width:1000px){.burger{display:block}.lang{margin-left:auto}}

#msheet{
  position:fixed;inset:0;z-index:99;background:var(--paper);
  display:flex;flex-direction:column;justify-content:center;gap:6px;
  padding:0 var(--pad);
  opacity:0;visibility:hidden;transition:opacity .45s var(--ease),visibility .45s;
}
#msheet.on{opacity:1;visibility:visible}
#msheet a{
  font-family:var(--serif);font-size:clamp(22px,5vw,30px);
  padding:12px 0;border-bottom:1px solid var(--line2);
}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:100svh;
  display:flex;align-items:center;
  padding:clamp(100px,14vh,160px) 0 clamp(60px,9vh,100px);
  overflow:hidden;
}
.hero-orn,.hero-orn-2{
  position:absolute;border-radius:50%;border:1px solid var(--line2);
  pointer-events:none;
}
.hero-orn{width:min(58vw,760px);aspect-ratio:1;right:-14vw;top:-12vh}
.hero-orn-2{width:min(34vw,460px);aspect-ratio:1;right:2vw;bottom:-16vh;border-color:rgba(154,123,79,.18)}
.hero-in{position:relative;z-index:2}

.eyebrow{
  font-size:10.5px;letter-spacing:.34em;color:var(--gold);
  font-weight:500;margin-bottom:clamp(26px,4vh,44px);
}
.hero h1{
  font-size:clamp(38px,7.4vw,84px);
  line-height:1.16;letter-spacing:.005em;font-weight:500;
  margin-bottom:clamp(26px,4vh,40px);
}
.hero h1 .line{display:block;overflow:hidden}
.hero h1 .line>span{
  display:block;
  transform:translateY(105%);
  animation:riseUp 1.1s var(--ease-out) forwards;
}
.hero h1 .line:nth-child(1)>span{animation-delay:.45s}
.hero h1 .line:nth-child(2)>span{animation-delay:.62s}
@keyframes riseUp{to{transform:none}}
@media (prefers-reduced-motion:reduce){
  .hero h1 .line>span{animation:none;transform:none}
}

.hero p{
  max-width:56ch;color:var(--ink2);font-size:clamp(14px,1.35vw,16px);line-height:2.05;
  opacity:0;animation:fadeUp 1s var(--ease-out) .95s forwards;
}

.stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  margin-top:clamp(40px,6vh,64px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  opacity:0;animation:fadeUp 1s var(--ease-out) 1.15s forwards;
}
.stat{padding:clamp(20px,3vw,30px) clamp(12px,2vw,26px);border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat .n{
  font-family:var(--serif);font-size:clamp(26px,3.4vw,42px);line-height:1.1;
  font-weight:500;letter-spacing:.01em;
  display:flex;align-items:baseline;gap:5px;
}
.stat .n small{font-size:.42em;letter-spacing:.06em;color:var(--ink3);font-family:var(--sans)}
.stat .n.stat-v{font-size:clamp(14px,1.85vw,25px);line-height:1.45;letter-spacing:0;display:block}
.stat .l{font-size:11px;letter-spacing:.12em;color:var(--ink3);margin-top:9px}
@media(max-width:520px){
  .stat{padding:16px 9px}
  .stat .n{font-size:24px}
  .stat .n.stat-v{font-size:14px}
  .stat .l{font-size:9.5px;letter-spacing:.06em;margin-top:6px}
}

.scrollcue{
  position:absolute;left:50%;bottom:22px;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:10px;
  font-size:9px;letter-spacing:.34em;color:var(--ink3);
}
.scrollcue i{display:block;width:1px;height:44px;background:linear-gradient(var(--ink3),transparent);animation:cue 2.2s var(--ease) infinite}
@keyframes cue{0%{transform:scaleY(.2);transform-origin:top;opacity:0}45%{opacity:1}100%{transform:scaleY(1);transform-origin:top;opacity:0}}
@media(max-height:700px),(max-width:760px){.scrollcue{display:none}}

/* ---------- section shell ---------- */
section{padding:clamp(72px,11vh,130px) 0;position:relative}
section:nth-of-type(even){background:var(--paper2)}

.shead{
  display:flex;gap:clamp(18px,3vw,42px);
  align-items:flex-start;
  margin-bottom:clamp(38px,6vh,66px);
}
.snum{
  font-family:var(--serif);font-size:11px;letter-spacing:.2em;
  color:var(--gold);padding-top:.55em;flex-shrink:0;
  position:relative;
}
.snum::after{content:"";position:absolute;left:0;top:0;width:1px;height:0;background:var(--gold)}
.h2{font-size:clamp(25px,3.5vw,40px);line-height:1.32}
.h2-en{
  font-size:10px;letter-spacing:.32em;color:var(--ink3);
  margin-top:12px;font-weight:500;
}
.lead{
  margin-top:18px;color:var(--ink2);max-width:60ch;
  font-size:clamp(13.5px,1.3vw,15px);line-height:2.05;
}

/* ---------- why ---------- */
.dgrid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  border-top:1px solid var(--line);
}
.ditem{
  padding:clamp(26px,3.4vw,42px) clamp(18px,2.6vw,34px) clamp(26px,3.4vw,42px) 0;
  border-right:1px solid var(--line);position:relative;
}
.ditem:last-child{border-right:0}
.dn{
  font-family:var(--serif);font-size:11px;letter-spacing:.2em;color:var(--gold);
  margin-bottom:clamp(20px,3vw,32px);
}
.ditem h4{font-size:clamp(17px,1.9vw,21px);margin-bottom:12px}
.ditem p{font-size:13.5px;color:var(--ink2);line-height:1.95}
@media(max-width:860px){
  .dgrid{grid-template-columns:1fr}
  .ditem{border-right:0;border-bottom:1px solid var(--line);padding-right:0}
  .ditem:last-child{border-bottom:0}
}

/* ---------- products ---------- */
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(14px,2vw,24px)}
.pcard{
  background:var(--paper);
  border:1px solid var(--line);
  padding:clamp(22px,2.8vw,34px);
  position:relative;
  transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .4s var(--ease);
  transform-style:preserve-3d;
  will-change:transform;
}
.pcard:hover{
  box-shadow:0 22px 54px -26px rgba(20,18,15,.28);
  border-color:rgba(20,18,15,.24);
}
.pcard .tag{
  position:absolute;top:clamp(18px,2.4vw,26px);right:clamp(18px,2.4vw,26px);
  font-family:var(--serif);font-size:11px;letter-spacing:.16em;color:var(--gold);
}
.pcard h3{font-size:clamp(17px,1.85vw,20px);padding-right:40px;line-height:1.5}
.pcard .en{
  font-size:9.5px;letter-spacing:.26em;color:var(--ink3);
  margin:9px 0 clamp(20px,2.6vw,28px);
}
.pcard ul{display:flex;flex-direction:column;gap:0}
.pcard li{
  display:flex;justify-content:space-between;gap:14px;
  padding:11px 0;border-top:1px solid var(--line2);
  font-size:13px;
}
.pcard li>span:first-child{color:var(--ink3);flex-shrink:0;letter-spacing:.05em}
.pcard li>span:last-child{text-align:right;color:var(--ink)}
@media(max-width:900px){.pgrid{grid-template-columns:1fr}}

/* ---------- facility flow ---------- */
.pflow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line);padding-top:clamp(28px,4vw,44px)}
.pstep{position:relative;padding-right:clamp(10px,1.6vw,22px)}
.pstep .bar{
  position:absolute;top:calc(-1 * clamp(28px,4vw,44px) - 1px);left:0;
  height:2px;width:0;background:var(--gold);
  transition:width 1.1s var(--ease-out);
}
.pstep.in .bar{width:100%}
.pstep .num{
  font-family:var(--serif);font-size:11px;letter-spacing:.2em;color:var(--gold);margin-bottom:14px;
}
.pstep h4{font-size:clamp(14px,1.5vw,16px);margin-bottom:8px}
.pstep p{font-size:12.5px;color:var(--ink2);line-height:1.85}
@media(max-width:820px){
  .pflow{grid-template-columns:1fr 1fr;gap:26px 0}
  .pstep{border-left:2px solid var(--line2);padding-left:16px}
  .pstep .bar{display:none}
  .pstep{border-left-color:var(--gold)}
}
@media(max-width:520px){.pflow{grid-template-columns:1fr}}

/* ---------- quality ---------- */
.cgrid2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(12px,1.8vw,20px)}
.cbox{
  display:flex;gap:clamp(14px,2vw,22px);align-items:flex-start;
  background:var(--paper);border:1px solid var(--line);
  padding:clamp(20px,2.6vw,30px);
}
.cmark{
  flex-shrink:0;width:44px;height:44px;
  display:grid;place-items:center;
  border:1px solid var(--line);
  font-family:var(--serif);font-size:12px;letter-spacing:.08em;color:var(--navy);
}
.cmark.pending{color:var(--gold);border-color:rgba(154,123,79,.4);border-style:dashed}
.cbox h4{font-size:15px;margin-bottom:6px}
.cbox p{font-size:12.5px;color:var(--ink2);line-height:1.8}
@media(max-width:700px){.cgrid2{grid-template-columns:1fr}}

/* ---------- tables ---------- */
.ttable{width:100%;border-collapse:collapse;font-size:13.5px}
.ttable tr{border-bottom:1px solid var(--line2)}
.ttable tr:first-child{border-top:1px solid var(--line)}
.ttable th{
  text-align:left;font-weight:400;color:var(--ink3);
  width:clamp(110px,20vw,220px);
  padding:clamp(13px,1.8vw,18px) clamp(10px,2vw,24px) clamp(13px,1.8vw,18px) 0;
  letter-spacing:.05em;vertical-align:top;
}
.ttable td{padding:clamp(13px,1.8vw,18px) 0;color:var(--ink)}
.ttable tr{transition:background .3s var(--ease)}
.ttable tbody tr:hover{background:rgba(20,18,15,.022)}

/* ---------- gallery ---------- */
.gal{
  display:grid;grid-template-columns:repeat(3,1fr);
  grid-auto-rows:clamp(150px,20vw,250px);
  gap:clamp(10px,1.4vw,18px);
}
.gslot{
  position:relative;overflow:hidden;background:var(--paper2);
  border:1px solid var(--line2);
  display:grid;place-items:center;
  margin:0;
  transition:transform .6s var(--ease);
}
.gslot.wide{grid-column:span 2}
.gslot img{width:100%;height:100%;object-fit:cover;display:block}
.gslot .glabel{
  font-size:11px;letter-spacing:.16em;color:var(--ink3);
  position:relative;z-index:1;
}
.gslot figcaption.glabel{
  position:absolute;left:0;bottom:0;right:0;z-index:2;
  padding:26px 15px 12px;
  background:linear-gradient(to top,rgba(18,16,13,.62),rgba(18,16,13,0));
  color:#fff;letter-spacing:.14em;font-size:11px;
}
.gal-note{
  margin-top:14px;font-size:11px;letter-spacing:.1em;color:var(--ink3);
}
.gslot.ph{
  background-image:
    repeating-linear-gradient(45deg,transparent 0 9px,rgba(20,18,15,.028) 9px 10px);
}
.gslot:hover{transform:scale(1.008)}
@media(max-width:760px){
  .gal{grid-template-columns:1fr 1fr;grid-auto-rows:130px}
  .gslot.wide{grid-column:span 2}
}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.fitem{border-bottom:1px solid var(--line2)}
.fq{
  width:100%;display:flex;align-items:center;gap:clamp(12px,2vw,22px);
  padding:clamp(18px,2.4vw,26px) 0;text-align:left;
  font-size:clamp(14px,1.5vw,16px);font-family:var(--serif);
  transition:color .3s var(--ease);
}
.fq:hover{color:var(--navy)}
.fq .q{
  font-family:var(--serif);font-size:11px;letter-spacing:.16em;color:var(--gold);
  flex-shrink:0;width:26px;
}
.fq>span:nth-child(2){flex:1}
.fq .ico{
  position:relative;width:13px;height:13px;flex-shrink:0;
}
.fq .ico::before,.fq .ico::after{
  content:"";position:absolute;background:var(--ink3);
  transition:transform .45s var(--ease),background .3s;
}
.fq .ico::before{left:0;top:6px;width:13px;height:1px}
.fq .ico::after{left:6px;top:0;width:1px;height:13px}
.fitem.on .fq .ico::after{transform:rotate(90deg)}
.fitem.on .fq .ico::before,.fitem.on .fq .ico::after{background:var(--navy)}
.fa{height:0;overflow:hidden;transition:height .5s var(--ease)}
.fa>div{
  padding:0 0 clamp(20px,2.6vw,28px) calc(26px + clamp(12px,2vw,22px));
  font-size:13.5px;color:var(--ink2);line-height:2;max-width:74ch;
}

/* ---------- contact ---------- */
.contact{background:var(--navy);color:#EDE8DF}
.contact .h2{color:#fff}
.contact .h2-en{color:rgba(237,232,223,.5)}
.contact .lead{color:rgba(237,232,223,.72)}
.contact .snum{color:rgba(154,123,79,.9)}
.contact .snum::after{background:rgba(154,123,79,.6)}

.cgrid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(30px,5vw,72px)}
.cinfo dl{margin:0}
.cinfo dt{
  font-size:9.5px;letter-spacing:.3em;color:rgba(237,232,223,.45);
  margin-bottom:7px;margin-top:26px;
}
.cinfo dt:first-child{margin-top:0}
.cinfo dd{margin:0;font-size:14.5px;line-height:1.7}
.cinfo dd a{border-bottom:1px solid rgba(237,232,223,.28);transition:border-color .3s}
.cinfo dd a:hover{border-color:#EDE8DF}

#cform{display:flex;flex-direction:column}
.fl{
  font-size:10px;letter-spacing:.18em;color:rgba(237,232,223,.55);
  margin:0 0 7px;display:block;
}
#cform input,#cform select,#cform textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid rgba(237,232,223,.26);
  color:#fff;font:inherit;font-size:14px;padding:9px 0 11px;
  transition:border-color .35s var(--ease);
  border-radius:0;outline:none;
  margin-bottom:22px;
}
#cform select option{color:var(--ink);background:#fff}
#cform input:focus,#cform select:focus,#cform textarea:focus{border-color:#fff}
#cform textarea{resize:vertical;min-height:84px;line-height:1.9}
#cform input::placeholder,#cform textarea::placeholder{color:rgba(237,232,223,.3)}

.btn{
  align-self:flex-start;margin-top:6px;
  background:#EDE8DF;color:var(--navy);
  padding:15px 44px;font-size:12.5px;letter-spacing:.18em;
  position:relative;overflow:hidden;
  transition:color .4s var(--ease);
}
.btn::before{
  content:"";position:absolute;inset:0;background:var(--gold);
  transform:translateY(101%);transition:transform .5s var(--ease);
}
.btn:hover{color:#fff}
.btn:hover::before{transform:none}
.btn span{position:relative;z-index:1}
@media(max-width:820px){.cgrid{grid-template-columns:1fr}}

/* ---------- footer ---------- */
footer{
  background:var(--navy);
  border-top:1px solid rgba(237,232,223,.12);
  padding:clamp(28px,4vw,40px) 0;
  color:rgba(237,232,223,.5);
  font-size:11px;letter-spacing:.05em;
}
.fin{display:flex;align-items:center;gap:clamp(14px,3vw,32px);flex-wrap:wrap;justify-content:space-between}
footer .brand b{color:#fff;font-size:16px}
footer .brand span{color:rgba(237,232,223,.35)}

/* ---------- reveal ---------- */
[data-rev]{
  opacity:0;transform:translateY(26px);
  transition:opacity .9s var(--ease-out),transform .9s var(--ease-out);
}
[data-rev].in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  [data-rev]{opacity:1;transform:none;transition:none}
  #pre{display:none}
}

::selection{background:var(--navy);color:#fff}

/* scrollbar */
::-webkit-scrollbar{width:9px}
::-webkit-scrollbar-track{background:var(--paper2)}
::-webkit-scrollbar-thumb{background:rgba(20,18,15,.22);border-radius:0}
::-webkit-scrollbar-thumb:hover{background:rgba(20,18,15,.38)}