/* =====================================================================
   瑞创利达体育 · RUICHUANG SPORTS
   An editorial sports-field design system — after "KHAM".
   A live daylight stadium runs behind the whole document: terracotta
   track, pitch green, volt accents, floodlights coming on at dusk.
   Everything structural below follows the KHAM chapter layout:
   fixed nav, full-viewport hero with chapter chips, numbered section
   heads, staggered cards, curriculum rows, a final CTA, a progress rail.
   ===================================================================== */

/* ============================================================= tokens */
:root{
  --ink:#0e2233;          /* deep navy ink — body text on bright scene */
  --ink-2:#16324a;        /* raised ink */
  --bone:#f7fbf8;         /* warm white */
  --bone-dim:rgba(14,34,51,.74);
  --muted:rgba(14,34,51,.52);
  --line:rgba(14,34,51,.18);
  --line-soft:rgba(14,34,51,.10);
  --flame:#ff4d1c;        /* primary accent — lane flame */
  --ember:#ff7a3d;
  --volt:#ffd21c;         /* finish-line yellow */
  --pitch:#27b05c;        /* pitch green */
  --track:#f0603a;        /* terracotta track */
  --wash:rgba(247,251,248,.82);   /* reading scrim over the scene */
  --wash-deep:rgba(10,24,36,.86); /* dark scrim for dusk sections */
  --card:#ffffff;
  --pad:clamp(20px, 3.4vw, 56px);
  --nav-h:84px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-io:cubic-bezier(.65,0,.35,1);
  --shadow-card:0 22px 54px -28px rgba(14,34,51,.38);
}
*,*::before,*::after{box-sizing:border-box}
html{ -webkit-text-size-adjust:100%; }
body{
  margin:0; background:#bfe6fb; color:var(--ink);
  font-family:'Onest','PingFang SC','Noto Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-weight:400; font-size:15px; line-height:1.7;
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
::selection{ background:var(--flame); color:#fff; }
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:where(a,button,[role="button"],input,textarea,select):focus-visible{
  outline:2px solid var(--flame); outline-offset:4px; border-radius:2px;
}
.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0 0 0 0); clip-path:inset(50%); white-space:nowrap; border:0;
}
.skip{
  position:fixed; top:12px; left:12px; z-index:120; padding:10px 16px;
  background:var(--ink); color:var(--bone); font-size:11px; font-weight:500;
  letter-spacing:.16em; text-transform:uppercase; transform:translateY(-180%);
  transition:transform .2s var(--ease-out);
}
.skip:focus{ transform:none; }

/* ============================================================= layers */
#gl{
  position:fixed; inset:0; width:100%; height:100%;
  display:block; z-index:0; background:#8fd4ff;
}
#grain{
  position:fixed; inset:-1px; z-index:60; pointer-events:none;
  opacity:.05; mix-blend-mode:multiply;
  background-repeat:repeat; background-size:180px 180px;
}
#vignette{
  position:fixed; inset:0; z-index:55; pointer-events:none;
  background:radial-gradient(128% 96% at 50% 42%, transparent 46%, rgba(20,42,60,.16) 100%);
}
.page{ position:relative; z-index:10; }
.ln{ display:block; }

/* ============================================================= type */
.eyebrow{
  font-size:11px; font-weight:600; letter-spacing:.18em; text-transform:uppercase;
  color:var(--bone-dim);
}
.jp{ font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif; font-weight:400; }
h1,h2,h3,h4{ font-weight:500; margin:0; letter-spacing:.02em; }
.display{
  line-height:1.24; letter-spacing:.02em;
  font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif;
  font-weight:600;
}
.h-hero{ font-size:clamp(30px,3.6vw,56px); }
.h-sec{ font-size:clamp(28px,4.1vw,60px); }
.body-lg{ font-size:clamp(14px,1.05vw,17px); line-height:1.92; letter-spacing:.01em; color:var(--ink-2); }
.body{ font-size:14px; line-height:1.9; letter-spacing:.01em; color:var(--bone-dim); }
.num{ font-size:clamp(26px,2.5vw,36px); font-weight:300; letter-spacing:-.02em; color:var(--ink); font-variant-numeric:tabular-nums; }
.body,.body-lg{ text-wrap:pretty; }

/* ============================================================= reveal */
[data-rv]{ opacity:0; }
[data-rv="up"]{ transform:translate3d(0,26px,0); }
[data-rv="fade"]{ transform:none; }
[data-rv].rv-in{ opacity:1; transform:none;
  transition:opacity .9s var(--ease-out), transform 1.05s var(--ease-out); }
.mask-line{ display:block; overflow:hidden; }
.mask-line > span{ display:block; transform:translate3d(0,110%,0); transition:transform 1.05s var(--ease-out); }
.rv-in .mask-line > span, .mask-line.rv-in > span{ transform:none; }

/* ============================================================= preloader */
.boot{ position:fixed; inset:0; z-index:110; background:var(--bone);
  display:flex; align-items:center; justify-content:center; flex-direction:column; gap:18px;
  transition:opacity .6s var(--ease), visibility .6s; }
.boot.gone{ opacity:0; visibility:hidden; }
.boot .brand-line{ font-size:12px; letter-spacing:.3em; text-transform:uppercase; color:var(--muted); }
.boot .lane{ width:min(220px,50vw); height:2px; background:var(--line-soft); overflow:hidden; }
.boot .lane i{ display:block; height:100%; width:40%; background:var(--flame); animation:bootlane 1.1s var(--ease-io) infinite; }
@keyframes bootlane{ 0%{transform:translateX(-110%)} 100%{transform:translateX(320%)} }

/* ============================================================= nav */
.nav{
  position:fixed; top:0; left:0; width:var(--vw, 100%); height:var(--nav-h); z-index:50;
  display:flex; align-items:center; gap:24px; padding:0 var(--pad);
  transition:transform .55s var(--ease);
}
.nav::before{
  content:''; position:absolute; inset:0; z-index:-1; pointer-events:none;
  background:rgba(247,251,248,.72);
  backdrop-filter:blur(14px) saturate(1.15); -webkit-backdrop-filter:blur(14px) saturate(1.15);
  opacity:0; transition:opacity .5s linear;
}
.nav.stuck::before{ opacity:1; }
.nav::after{
  content:''; position:absolute; left:var(--pad); right:var(--pad); bottom:0; height:1px;
  background:var(--line-soft); opacity:0; transition:opacity .5s;
}
.nav.stuck::after{ opacity:1; }
.nav.hide{ transform:translate3d(0,-101%,0); }
.brand{ display:flex; align-items:center; gap:11px; flex:0 0 auto; }
.brand svg{ width:36px; height:36px; display:block; }
.brand img{ height:38px; width:auto; display:block; }
.brand-tx{ display:flex; flex-direction:column; line-height:1; gap:3px; }
.brand-tx b{ font-size:12.5px; font-weight:700; letter-spacing:.05em; color:var(--ink); white-space:nowrap; }
.brand-tx i{ font-style:normal; font-size:9px; letter-spacing:.16em; color:var(--muted); }
.nav-links{ display:flex; gap:clamp(18px,2.6vw,46px); margin-left:auto; }
.nav-link{
  position:relative; font-size:12px; font-weight:600; letter-spacing:.12em;
  color:var(--bone-dim); display:block; padding-bottom:4px;
  transition:color .3s;
}
.nav-link:hover{ color:var(--ink); }
.nav-link.on{ color:var(--ink); }
.nav-link.on::after{ content:''; position:absolute; left:0; bottom:0; width:100%; height:2px; background:var(--flame); }
.nav-burger{ margin-left:clamp(18px,2.6vw,42px); width:26px; height:16px; position:relative; flex:0 0 auto; }
.nav-burger i{ position:absolute; right:0; height:1.5px; background:var(--ink); transition:width .45s var(--ease-out), transform .45s var(--ease-out); }
.nav-burger i:nth-child(1){ top:4px; width:26px; }
.nav-burger i:nth-child(2){ top:11px; width:17px; }
.nav-burger:hover i:nth-child(2){ width:26px; }
.nav-burger:hover i:nth-child(1){ width:17px; }
.nav.is-open .nav-burger i:nth-child(1){ transform:translateY(3.5px) rotate(45deg); width:26px; }
.nav.is-open .nav-burger i:nth-child(2){ transform:translateY(-3.5px) rotate(-45deg); width:26px; }
.sheet{
  position:fixed; left:0; right:0; top:var(--nav-h); z-index:49; width:var(--vw,100%);
  background:rgba(247,251,248,.94); backdrop-filter:blur(18px); -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line-soft);
  padding:10px var(--pad) 26px; display:flex; flex-direction:column;
  opacity:0; visibility:hidden; transform:translate3d(0,-8px,0);
  transition:opacity .4s var(--ease), transform .45s var(--ease-out), visibility .4s;
}
.nav.is-open + .sheet{ opacity:1; visibility:visible; transform:none; }
.sheet a{
  display:flex; align-items:baseline; justify-content:space-between; gap:12px;
  padding:15px 0; border-bottom:1px solid var(--line-soft);
  font-size:15px; font-weight:600; letter-spacing:.08em; color:var(--ink);
}
.sheet a i{ font-style:normal; font-size:10px; letter-spacing:.2em; color:var(--muted); }
.sheet a:hover{ color:var(--flame); }

/* ============================================================= hero */
.hero{ position:relative; min-height:100svh; padding:0 var(--pad); display:flex; flex-direction:column; }
.hero-top{ padding-top:calc(var(--nav-h) + clamp(12px,2.6vh,34px)); max-width:min(620px,52vw); position:relative; z-index:2; }
.hero-top .eyebrow{ display:flex; align-items:center; gap:10px; margin-bottom:20px; }
.hero-top .eyebrow .dot{ width:6px; height:6px; border-radius:50%; background:var(--flame); box-shadow:0 0 10px var(--flame); }
.hero h1{ margin-bottom:18px; }
.hero-sub{ max-width:400px; font-size:clamp(14px,1vw,16px); line-height:1.9; color:var(--ink-2); }
.hero-spacer{ flex:1 1 auto; min-height:clamp(120px,22vh,260px); }
.hero-foot{ padding-bottom:clamp(22px,4.2vh,42px); position:relative; z-index:2; }
.hero-cue{ display:flex; align-items:center; justify-content:flex-end; gap:12px; margin-bottom:14px;
  font-size:10px; letter-spacing:.18em; color:var(--muted); }
.hero-cue .trackline{ width:54px; height:1px; background:var(--line); position:relative; overflow:hidden; }
.hero-cue .trackline i{ position:absolute; inset:0; background:var(--ink); transform-origin:left;
  animation:cue 2.8s var(--ease-io) infinite; }
.chapters{
  display:grid; grid-template-columns:repeat(4,1fr); gap:clamp(14px,2.4vw,40px);
  border-top:1px solid var(--line-soft); padding-top:18px;
}
.chip{ display:flex; gap:14px; align-items:flex-start; cursor:pointer; }
.chip .num{ line-height:1; flex:0 0 auto; transition:color .4s, transform .5s var(--ease-out); }
.chip .tx{ min-width:0; padding-top:3px; }
.chip b{ display:block; font-size:12px; font-weight:600; letter-spacing:.08em;
  color:var(--bone-dim); margin-bottom:6px; transition:color .4s; }
.chip p{ margin:0; font-size:12px; line-height:1.75; color:var(--muted); max-width:16em; transition:color .4s; }
.chip:hover .num, .chip.on .num{ color:var(--flame); }
.chip:hover .num{ transform:translate3d(0,-2px,0); }
.chip:hover b, .chip.on b{ color:var(--ink); }
.chip:hover p{ color:var(--bone-dim); }
.hero-side{
  position:absolute; z-index:2; right:var(--pad); top:50%; transform:translateY(-50%);
  display:flex; flex-direction:column; align-items:center; gap:14px; pointer-events:none;
}
.hero-side .v{ writing-mode:vertical-rl; font-size:13px; letter-spacing:.62em; color:rgba(14,34,51,.5); }
@keyframes cue{ 0%{transform:scaleX(0)} 42%{transform:scaleX(1)} 100%{transform:scaleX(1) translateX(100%)} }

/* — the floating window: a live plate carried over the hero — */
.peek{
  position:absolute; z-index:2; right:clamp(78px,11vw,190px); top:clamp(120px,22vh,214px);
  width:clamp(150px,14.5vw,236px); display:block;
  transition:transform .8s var(--ease-out);
}
.peek-fr{ display:block; aspect-ratio:16/10; background:#dceefb center / cover no-repeat;
  outline:1px solid rgba(14,34,51,.22); outline-offset:-1px;
  box-shadow:0 34px 70px -30px rgba(14,34,51,.55); transition:outline-color .5s; position:relative; }
.peek:hover{ transform:translate3d(0,-5px,0); }
.peek:hover .peek-fr{ outline-color:var(--flame); }
.peek-play{ position:absolute; top:0; right:0; left:0; bottom:auto; aspect-ratio:16/10;
  display:grid; place-items:center; pointer-events:none; }
.peek-play svg{ width:clamp(30px,3.2vw,46px); height:auto; filter:drop-shadow(0 2px 12px rgba(14,34,51,.5));
  transition:transform .55s var(--ease-out); }
.peek:hover .peek-play svg{ transform:scale(1.14); }
.peek-cap{ display:flex; align-items:baseline; gap:9px; margin-top:9px; }
.peek-cap b{ font-size:11px; font-weight:600; letter-spacing:.18em; color:var(--ink);
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis; display:block; min-width:0; }
.peek-cap i{ font-style:normal; font-size:10px; letter-spacing:.1em; color:var(--muted);
  white-space:nowrap; flex:0 0 auto; }
@media (max-width:860px){ .peek{ display:none; } }

/* ============================================================= sections */
.sec{ position:relative; padding:clamp(88px,15vh,190px) var(--pad); }
.sec::before{
  content:''; position:absolute; inset:-16% -4% 0; z-index:-1; pointer-events:none;
  background:radial-gradient(110% 62% at 30% 50%, var(--wash), rgba(247,251,248,.62) 42%, rgba(247,251,248,.16) 74%, rgba(247,251,248,0));
  -webkit-mask-image:linear-gradient(transparent, #000 44%);
          mask-image:linear-gradient(transparent, #000 44%);
}
.sec-head{ display:flex; align-items:baseline; gap:16px; margin-bottom:clamp(30px,5vh,66px); }
.sec-head .k{ font-size:11px; font-weight:600; letter-spacing:.14em; color:var(--muted); }
.sec-head .k b{ color:var(--flame); font-weight:600; }
.sec-head .rule{ flex:1 1 auto; height:1px; background:var(--line-soft); }
.sec-head .more{ font-size:11px; font-weight:600; letter-spacing:.16em; color:var(--ink);
  display:inline-flex; align-items:center; gap:8px; text-transform:uppercase; }
.sec-head .more:hover{ color:var(--flame); }

/* — chapter I: the gate (关于) — */
.gate-grid{ display:grid; grid-template-columns:minmax(0,1.02fr) minmax(0,1fr); gap:clamp(28px,5vw,90px); align-items:start; }
.gate-grid h2{ max-width:10em; }
.gate-copy{ padding-top:6px; }
.gate-copy .lead{ font-size:clamp(15px,1.16vw,19px); line-height:1.95; letter-spacing:.01em; color:var(--ink-2); }
.gate-copy .lead + p{ margin-top:20px; }
.stats{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(18px,3vw,48px);
  margin-top:clamp(34px,6vh,64px); padding-top:24px; border-top:1px solid var(--line-soft); }
.stat .num{ color:var(--flame); font-weight:400; }
.stat .label{ margin-top:6px; font-size:11px; letter-spacing:.16em; color:var(--muted); }
.arrowlink{ display:inline-flex; align-items:center; gap:12px; margin-top:34px;
  font-size:11px; font-weight:600; letter-spacing:.2em; text-transform:uppercase; color:var(--ink); }
.arrowlink .ar{ width:34px; height:34px; border:1px solid var(--line); border-radius:50%;
  display:grid; place-items:center; transition:background .45s var(--ease), border-color .45s, transform .5s var(--ease-out); }
.arrowlink .ar svg{ width:13px; height:13px; transition:transform .5s var(--ease-out); }
.arrowlink:hover .ar{ background:var(--ink); border-color:var(--ink); }
.arrowlink:hover .ar svg{ transform:translate3d(2px,-2px,0); }
.arrowlink:hover .ar svg path{ stroke:var(--bone); }
.gate-fact{ margin-top:clamp(46px,8vh,96px); padding-top:20px; border-top:1px solid var(--line-soft);
  font-size:11px; letter-spacing:.16em; color:var(--muted); }

/* — chapter II: services (curriculum rows) — */
.cur-head{ display:grid; grid-template-columns:minmax(0,1fr) minmax(0,.72fr); gap:clamp(28px,5vw,90px); align-items:end; margin-bottom:clamp(34px,6vh,72px); }
.cur-head h2{ max-width:10em; }
.cur{ border-top:1px solid var(--line-soft); }
.les{
  position:relative; display:grid; align-items:center;
  grid-template-columns:64px minmax(0,1.05fr) minmax(0,1.25fr);
  gap:clamp(14px,2.4vw,40px);
  padding:clamp(20px,2.4vw,30px) 0; border-bottom:1px solid var(--line-soft);
  transition:padding .5s var(--ease-out);
}
.les::before{ content:''; position:absolute; left:calc(var(--pad) * -1); right:0; top:0; bottom:0;
  background:linear-gradient(90deg, rgba(255,77,28,.10), transparent 46%);
  opacity:0; transition:opacity .55s var(--ease); pointer-events:none; }
.les:hover::before{ opacity:1; }
.les:hover{ padding-left:clamp(8px,1.2vw,18px); }
.les .k{ font-size:11px; letter-spacing:.16em; color:var(--muted); font-variant-numeric:tabular-nums; transition:color .4s; }
.les:hover .k{ color:var(--flame); }
.les h3{ font-size:clamp(17px,1.5vw,24px); font-weight:600; letter-spacing:.03em;
  font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif; }
.les h3 em{ font-style:normal; font-family:'Onest','PingFang SC',sans-serif; font-size:.62em; color:var(--muted); margin-left:12px; letter-spacing:.14em; }
.les p{ margin:0; font-size:13px; line-height:1.8; letter-spacing:.01em; color:var(--bone-dim); }
.les .bar{ position:absolute; left:0; bottom:-1px; height:2px; width:100%; background:var(--flame);
  transform:scaleX(0); transform-origin:left; transition:transform .7s var(--ease-out); }
.les:hover .bar{ transform:scaleX(1); }

/* — chapter III: cases (staggered cards) — */
.path-head{ display:grid; grid-template-columns:minmax(0,1fr) minmax(0,.72fr); gap:clamp(28px,5vw,90px); align-items:end; margin-bottom:clamp(18px,3vh,32px); }
.path-head h2{ max-width:12em; }
.cards{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(14px,1.6vw,26px); align-items:start; }
.card{ position:relative; display:block; }
.card:nth-child(3n+2){ transform:translateY(clamp(20px,3.4vw,54px)); }
.card:nth-child(3n+3){ transform:translateY(clamp(40px,6.8vw,108px)); }
.card-fr{ position:relative; aspect-ratio:4/3; overflow:hidden; background:#dceefb;
  outline:1px solid rgba(14,34,51,.14); outline-offset:-1px;
  box-shadow:var(--shadow-card); transition:outline-color .5s var(--ease); }
.card:hover .card-fr{ outline-color:var(--flame); }
.card-fr img{ width:100%; height:100%; object-fit:cover; transition:transform 1.1s var(--ease-out); }
.card:hover .card-fr img{ transform:scale(1.045); }
.card-fr::after{ content:''; position:absolute; inset:0;
  background:linear-gradient(transparent 52%, rgba(10,24,36,.72)); pointer-events:none; }
.card-lab{ position:absolute; left:16px; right:16px; bottom:14px; z-index:2;
  display:flex; align-items:flex-end; justify-content:space-between; gap:10px; color:var(--bone); }
.card-lab h3{ font-size:clamp(14px,1.2vw,18px); font-weight:600; letter-spacing:.06em; margin:0;
  font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif;
  text-shadow:0 1px 18px rgba(10,24,36,.6); }
.card-lab .jp{ font-size:12px; letter-spacing:.16em; color:rgba(247,251,248,.72); }
.card-ar{ position:absolute; top:14px; right:14px; z-index:2; width:26px; height:26px;
  opacity:0; transform:translate3d(-4px,4px,0); transition:.5s var(--ease-out);
  display:grid; place-items:center; background:var(--bone); border-radius:50%; }
.card:hover .card-ar{ opacity:1; transform:none; }
.card-meta{ display:flex; justify-content:space-between; margin-top:12px;
  font-size:10px; letter-spacing:.1em; color:var(--muted); }

/* — chapter IV: news — */
.news-list{ border-top:1px solid var(--line-soft); }
.news-row{
  position:relative; display:grid; grid-template-columns:120px minmax(0,1.4fr) minmax(0,.9fr);
  gap:clamp(14px,2.4vw,40px); align-items:center;
  padding:clamp(20px,2.4vw,30px) 0; border-bottom:1px solid var(--line-soft);
  transition:padding .5s var(--ease-out);
}
.news-row::before{ content:''; position:absolute; left:calc(var(--pad) * -1); right:0; top:0; bottom:0;
  background:linear-gradient(90deg, rgba(255,77,28,.08), transparent 46%);
  opacity:0; transition:opacity .55s var(--ease); pointer-events:none; }
.news-row:hover::before{ opacity:1; }
.news-row:hover{ padding-left:clamp(8px,1.2vw,18px); }
.news-row .when{ font-size:12px; letter-spacing:.1em; color:var(--muted); font-variant-numeric:tabular-nums; }
.news-row .when b{ display:block; font-size:11px; letter-spacing:.18em; color:var(--flame); margin-top:6px; font-weight:600; }
.news-row h3{ font-size:clamp(16px,1.4vw,22px); font-weight:600; letter-spacing:.02em;
  font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif; }
.news-row p{ margin:0; font-size:13px; line-height:1.8; color:var(--bone-dim); }
.news-row .bar{ position:absolute; left:0; bottom:-1px; height:2px; width:100%; background:var(--flame);
  transform:scaleX(0); transform-origin:left; transition:transform .7s var(--ease-out); }
.news-row:hover .bar{ transform:scaleX(1); }

/* — partners — */
.brands{ display:grid; grid-template-columns:repeat(6,1fr); gap:clamp(10px,1.4vw,22px); }
.brand-tile{
  display:grid; place-items:center; aspect-ratio:5/3; padding:14px;
  background:rgba(247,251,248,.72);
  backdrop-filter:blur(14px) saturate(1.15); -webkit-backdrop-filter:blur(14px) saturate(1.15); outline:1px solid var(--line-soft); outline-offset:-1px;
  transition:outline-color .4s, transform .5s var(--ease-out), box-shadow .5s;
}
.brand-tile:hover{ outline-color:var(--flame); transform:translateY(-4px); box-shadow:var(--shadow-card); }
.brand-tile img{ max-height:58px; object-fit:contain; }

/* — final chapter + CTA — */
.fin{ min-height:88svh; display:flex; flex-direction:column; justify-content:center; align-items:center; text-align:center; }
.fin .eyebrow{ margin-bottom:26px; color:rgba(247,251,248,.75); text-shadow:0 1px 18px rgba(10,24,36,.6); }
.fin h2{ font-size:clamp(36px,6.6vw,110px); line-height:1.06; letter-spacing:.04em; font-weight:600;
  font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif;
  text-shadow:0 2px 30px rgba(247,251,248,.28); }
.fin p{ max-width:28em; margin:26px auto 0; color:rgba(247,251,248,.88); text-shadow:0 1px 20px rgba(10,24,36,.65); }
.fin::before{
  content:''; position:absolute; inset:0 -4%; z-index:-1; pointer-events:none;
  background:radial-gradient(82% 58% at 50% 46%, rgba(10,24,36,.18), rgba(10,24,36,.5) 56%, rgba(10,24,36,.88) 82%, rgba(10,24,36,0));
  -webkit-mask-image:linear-gradient(#000 76%, transparent 100%);
          mask-image:linear-gradient(#000 76%, transparent 100%);
}
.cta{
  position:relative; display:inline-flex; align-items:center; gap:14px; margin-top:44px;
  padding:17px 30px; border:1px solid var(--line); border-radius:100px; overflow:hidden;
  font-size:11px; font-weight:600; letter-spacing:.22em; text-transform:uppercase;
  transition:color .45s var(--ease), border-color .45s; background:rgba(247,251,248,.55);
  backdrop-filter:blur(14px) saturate(1.15); -webkit-backdrop-filter:blur(14px) saturate(1.15);
}
.cta i{ position:absolute; inset:0; background:var(--flame); transform:translate3d(0,101%,0);
  transition:transform .62s var(--ease-out); z-index:-1; }
.cta span,.cta svg{ position:relative; z-index:1; }
.cta:hover{ color:#fff; border-color:var(--flame); }
.cta:hover i{ transform:none; }
.cta:hover svg path{ stroke:#fff; }
.cta--solid{ background:var(--flame); border-color:var(--flame); color:#fff; }
.cta--solid i{ background:var(--ink); }
.cta--solid:hover{ color:#fff; border-color:var(--ink); }

/* ============================================================= page hero (subpages) */
.page-hero{ position:relative; padding:calc(var(--nav-h) + clamp(48px,9vh,110px)) var(--pad) clamp(40px,7vh,84px); }
.page-hero::before{ content:''; position:absolute; inset:0 0 30% 0; z-index:-1; pointer-events:none;
  background:linear-gradient(rgba(247,251,248,.88), rgba(247,251,248,.42) 62%, transparent); }
.page-hero .crumb{ display:flex; align-items:center; gap:10px; flex-wrap:wrap;
  font-size:11px; letter-spacing:.14em; color:var(--muted); margin-bottom:22px; }
.page-hero .crumb a:hover{ color:var(--flame); }
.page-hero .crumb .sep{ opacity:.5; }
.page-hero h1{ font-size:clamp(34px,5.4vw,84px); line-height:1.08; letter-spacing:.03em;
  font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif; font-weight:600; }
.page-hero .lede{ margin-top:18px; max-width:44em; color:var(--ink-2); font-size:clamp(13px,1vw,16px); line-height:1.9; }
.page-hero .crumb-tag{ display:inline-flex; align-items:center; gap:8px; }
.page-hero .crumb-tag b{ color:var(--flame); font-weight:600; }

/* ============================================================= filter chips (news/products) */
.filters{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:clamp(24px,4vh,44px); }
.filters a{
  display:inline-flex; align-items:center; gap:8px; padding:10px 20px;
  border:1px solid var(--line); border-radius:100px; font-size:12px; font-weight:600;
  letter-spacing:.1em; color:var(--ink); background:rgba(247,251,248,.72);
  backdrop-filter:blur(14px) saturate(1.15); -webkit-backdrop-filter:blur(14px) saturate(1.15);
  transition:background .4s var(--ease), color .4s, border-color .4s, transform .4s var(--ease-out);
}
.filters a:hover{ transform:translateY(-2px); border-color:var(--ink); }
.filters a.on{ background:var(--ink); border-color:var(--ink); color:var(--bone); }
.filters a.on b{ color:var(--volt); }

/* ============================================================= product layout (sidebar + grid) */
.product-layout{ display:grid; grid-template-columns:250px minmax(0,1fr); gap:clamp(20px,2.6vw,40px); align-items:start; }
.product-sidebar{
  position:sticky; top:calc(var(--nav-h) + 18px);
  background:rgba(247,251,248,.72);
  backdrop-filter:blur(14px) saturate(1.15); -webkit-backdrop-filter:blur(14px) saturate(1.15); outline:1px solid var(--line-soft); outline-offset:-1px;
  box-shadow:0 14px 40px -26px rgba(14,34,51,.35); padding:22px 18px 14px;
}
.product-sidebar h3{ font-size:12px; font-weight:600; letter-spacing:.16em; color:var(--muted);
  text-transform:uppercase; padding:0 12px 14px; border-bottom:1px solid var(--line-soft); }
.product-sidebar ul{ list-style:none; margin:10px 0 0; padding:0; }
.product-sidebar li a{
  display:flex; align-items:baseline; gap:12px; padding:11px 12px; margin:2px 0;
  font-size:14px; font-weight:500; color:var(--ink-2); border-left:2px solid transparent;
  transition:background .3s, color .3s, border-color .3s;
}
.product-sidebar li a .k{ font-size:10px; letter-spacing:.14em; color:var(--muted); font-variant-numeric:tabular-nums; }
.product-sidebar li a:hover{ background:rgba(255,77,28,.06); color:var(--flame); }
.product-sidebar li a.active{ background:var(--ink); color:var(--bone); border-left-color:var(--flame); }
.product-sidebar li a.active .k{ color:var(--volt); }
.product-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(14px,1.6vw,24px); }
.product-grid .tile .im{ background:#f6f9f6; }
.product-grid .tile .im img{ object-fit:contain; }

/* ============================================================= grids (products/cases/news) */
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(16px,2vw,30px); }
.grid-4{ display:grid; grid-template-columns:repeat(4,1fr); gap:clamp(14px,1.6vw,24px); }
.tile{ display:block; background:rgba(247,251,248,.72);
  backdrop-filter:blur(14px) saturate(1.15); -webkit-backdrop-filter:blur(14px) saturate(1.15); outline:1px solid var(--line-soft); outline-offset:-1px;
  box-shadow:0 14px 40px -26px rgba(14,34,51,.4); transition:outline-color .4s, transform .55s var(--ease-out), box-shadow .55s; }
.tile:hover{ outline-color:var(--flame); transform:translateY(-5px); box-shadow:var(--shadow-card); }
.tile .im{ position:relative; aspect-ratio:4/3; overflow:hidden; background:#eef6ee; }
.tile .im img{ width:100%; height:100%; object-fit:cover; transition:transform 1.1s var(--ease-out); }
.tile:hover .im img{ transform:scale(1.05); }
.tile .in{ padding:18px 18px 20px; }
.tile .in .meta{ display:flex; align-items:center; justify-content:space-between; gap:10px;
  font-size:10px; letter-spacing:.14em; color:var(--muted); margin-bottom:10px; text-transform:uppercase; }
.tile .in .meta b{ color:var(--flame); font-weight:600; }
.tile h3{ font-size:clamp(15px,1.2vw,19px); font-weight:600; letter-spacing:.03em;
  font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif; }
.tile p{ margin:8px 0 0; font-size:12.5px; line-height:1.8; color:var(--bone-dim); }
.empty{ grid-column:1/-1; text-align:center; padding:70px 0; color:var(--muted); font-size:13px; letter-spacing:.1em; }

/* — honors — */
.honor-tile{ background:rgba(247,251,248,.72);
  backdrop-filter:blur(14px) saturate(1.15); -webkit-backdrop-filter:blur(14px) saturate(1.15); outline:1px solid var(--line-soft); outline-offset:-1px;
  padding:16px; transition:outline-color .4s, transform .5s var(--ease-out); }
.honor-tile:hover{ outline-color:var(--flame); transform:translateY(-4px); }
.honor-tile .im{ aspect-ratio:4/3; overflow:hidden; background:#f2f7f2; margin-bottom:12px; }
.honor-tile .im img{ width:100%; height:100%; object-fit:cover; }
.honor-tile h4{ font-size:13px; font-weight:600; letter-spacing:.04em; }

/* ============================================================= detail pages */
.detail-wrap{ max-width:880px; margin:0 auto; }
.detail-hero-img{ outline:1px solid var(--line-soft); box-shadow:var(--shadow-card); margin-bottom:clamp(26px,4vh,44px);
  aspect-ratio:16/9; overflow:hidden; background:#f2f7f2; }
.detail-hero-img img{ width:100%; height:100%; object-fit:cover; }
.detail-hero-img.product-hero{ aspect-ratio:8/5; background:#fff; }
.detail-hero-img.product-hero img{ object-fit:contain; background:#fff; }
.detail-title{ font-size:clamp(24px,2.6vw,40px); line-height:1.3;
  font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif; font-weight:600; }
.detail-meta{ display:flex; align-items:center; gap:14px; flex-wrap:wrap; margin:16px 0 26px;
  font-size:12px; letter-spacing:.12em; color:var(--muted); }
.detail-meta .cat{ color:var(--flame); font-weight:600; }
.article{ font-size:15px; line-height:2.05; color:var(--ink-2); }
.article p{ margin:0 0 1.2em; }
.detail-back{ margin-top:clamp(40px,7vh,72px); padding-top:24px; border-top:1px solid var(--line-soft); }

/* ============================================================= about page */
.about-split{ display:grid; grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr); gap:clamp(28px,5vw,90px); align-items:start; }
.about-split .im{ outline:1px solid var(--line-soft); box-shadow:var(--shadow-card); aspect-ratio:4/3; overflow:hidden; background:#f2f7f2; }
.about-split .im img{ width:100%; height:100%; object-fit:cover; }
.culture-cards{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(16px,2vw,30px); }
.culture-card{ position:relative; background:rgba(247,251,248,.72);
  backdrop-filter:blur(14px) saturate(1.15); -webkit-backdrop-filter:blur(14px) saturate(1.15); outline:1px solid var(--line-soft); outline-offset:-1px;
  padding:30px 26px 28px; overflow:hidden; transition:outline-color .4s, transform .5s var(--ease-out); }
.culture-card:hover{ outline-color:var(--flame); transform:translateY(-4px); }
.culture-card .icon{ font-size:26px; margin-bottom:14px; }
.culture-card h4{ font-size:17px; font-weight:600; margin-bottom:10px;
  font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif; }
.culture-card p{ margin:0; font-size:13px; line-height:1.85; color:var(--bone-dim); }
.culture-card .k{ position:absolute; right:14px; top:10px; font-size:11px; letter-spacing:.16em; color:rgba(14,34,51,.16); font-weight:600; }

/* ============================================================= contact */
.contact-grid{ display:grid; grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr); gap:clamp(24px,3.4vw,56px); align-items:start; }
.panel{ background:rgba(247,251,248,.72);
  backdrop-filter:blur(14px) saturate(1.15); -webkit-backdrop-filter:blur(14px) saturate(1.15); outline:1px solid var(--line-soft); outline-offset:-1px;
  box-shadow:var(--shadow-card); padding:clamp(26px,3vw,44px); }
.panel h3{ font-size:clamp(20px,1.8vw,28px); font-weight:600; margin-bottom:8px;
  font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif; }
.panel .panel-sub{ font-size:13px; color:var(--muted); margin-bottom:26px; }
.field{ margin-bottom:18px; }
.field label{ display:block; font-size:11px; font-weight:600; letter-spacing:.14em; color:var(--muted);
  margin-bottom:8px; text-transform:uppercase; }
.field label b{ color:var(--flame); }
.field input,.field textarea,.field select{
  width:100%; padding:13px 16px; border:1px solid var(--line); border-radius:0;
  background:rgba(247,251,248,.8); font:inherit; font-size:14px; color:var(--ink); outline:none;
  transition:border-color .3s, background .3s;
}
.field input:focus,.field textarea:focus{ border-color:var(--flame); background:#fff; }
.field textarea{ min-height:140px; resize:vertical; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-ok{ background:rgba(39,176,92,.1); border:1px solid rgba(39,176,92,.35); padding:36px 28px;
  text-align:center; margin-bottom:24px; }
.form-ok .big{ font-size:40px; margin-bottom:10px; }
.form-ok h4{ color:#157a3e; margin-bottom:6px; font-size:18px; }
.form-ok p{ margin:0; font-size:13px; color:#2c8a52; }
.form-err{ background:rgba(255,77,28,.08); border:1px solid rgba(255,77,28,.3);
  padding:12px 16px; color:#b93a12; font-size:13px; margin-bottom:20px; }
.info-rows{ display:flex; flex-direction:column; }
.info-row{ display:flex; gap:16px; align-items:flex-start; padding:16px 0; border-bottom:1px solid var(--line-soft); }
.info-row:last-child{ border-bottom:none; }
.info-row .icon{ width:42px; height:42px; flex:0 0 auto; display:grid; place-items:center;
  background:rgba(255,77,28,.09); color:var(--flame); font-size:18px; }
.info-row h4{ font-size:12px; font-weight:600; letter-spacing:.12em; color:var(--muted); margin-bottom:3px; text-transform:uppercase; }
.info-row p{ margin:0; font-size:14px; color:var(--ink); }
.hours{ display:flex; flex-direction:column; gap:0; }
.hours .h-row{ display:flex; justify-content:space-between; gap:14px; font-size:13px;
  padding:9px 0; border-bottom:1px dashed var(--line-soft); color:var(--bone-dim); }
.hours .h-row:last-child{ border-bottom:none; }
.hours .h-row b{ color:var(--ink); font-weight:600; }
.qr-box{ width:132px; height:132px; flex:0 0 auto; display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:8px; background:rgba(247,251,248,.72);
  backdrop-filter:blur(14px) saturate(1.15); -webkit-backdrop-filter:blur(14px) saturate(1.15); border:1px dashed var(--line); }
.qr-box img{ width:100%; height:100%; object-fit:contain; }
.qr-box .ph{ font-size:30px; opacity:.4; }
.qr-box p{ margin:0; font-size:10px; color:var(--muted); }

/* ============================================================= footer */
.foot{
  position:relative; min-height:72svh; display:flex; flex-direction:column; justify-content:flex-end;
  padding:clamp(50px,8vh,96px) var(--pad) clamp(26px,4vh,40px);
  background:linear-gradient(rgba(10,24,36,0), rgba(10,24,36,.82) 30%, #0a1824 58%);
  color:var(--bone);
}
.foot::before{ content:''; position:absolute; inset:0; z-index:-1; pointer-events:none; }
.foot-grid{ display:grid; grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,.6fr)); gap:clamp(22px,4vw,60px); }
.foot h4{ margin:0 0 16px; font-size:11px; font-weight:600; letter-spacing:.14em; color:rgba(247,251,248,.55); text-transform:uppercase; }
.foot ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:9px; }
.foot li a{ font-size:13px; color:rgba(247,251,248,.66); transition:color .35s; }
.foot li a:hover{ color:var(--volt); }
.foot-brand .brand{ margin-bottom:4px; }
.foot-brand .brand-tx b{ color:var(--bone); }
.foot-brand .brand-tx i{ color:rgba(247,251,248,.5); }
.foot-brand p{ margin:16px 0 0; max-width:24em; font-size:13px; line-height:1.9; color:rgba(247,251,248,.6); }
.foot-base{ display:flex; justify-content:space-between; align-items:center; gap:20px; flex-wrap:wrap;
  margin-top:clamp(38px,6vh,74px); padding-top:20px; border-top:1px solid rgba(247,251,248,.14);
  font-size:10px; letter-spacing:.1em; color:rgba(247,251,248,.45); }
.foot-base a{ color:rgba(247,251,248,.45); transition:color .3s; }
.foot-base a:hover{ color:var(--volt); }

/* ============================================================= progress rail */
.rail{ position:fixed; right:calc(var(--pad) - 4px); top:50%; transform:translateY(-50%); z-index:45;
  display:flex; flex-direction:column; gap:12px; align-items:center; }
.rail button{ width:22px; height:10px; display:grid; place-items:center; }
.rail i{ display:block; width:14px; height:2px; background:rgba(14,34,51,.26); transition:.5s var(--ease-out); }
.rail button.on i{ width:22px; background:var(--flame); }
.rail button:hover i{ width:22px; background:var(--ink); }

/* ============================================================= cursor */
.cur-dot{ position:fixed; z-index:80; top:0; left:0; width:26px; height:26px; margin:-13px 0 0 -13px;
  border:1.5px solid rgba(255,77,28,.7); border-radius:50%; pointer-events:none;
  transition:width .35s var(--ease-out), height .35s var(--ease-out), margin .35s var(--ease-out),
             border-color .3s, opacity .3s; }
.cur-dot.big{ width:52px; height:52px; margin:-26px 0 0 -26px; border-color:rgba(14,34,51,.5); }
@media (hover:none), (pointer:coarse){ .cur-dot{ display:none; } }

/* ============================================================= side toolbar */
.ss-bar { position:fixed; right:0; top:50%; transform:translateY(-50%); z-index:900; display:flex; flex-direction:column; box-shadow:-4px 0 24px rgba(14,34,51,.18); }
.ss-item { width:76px; height:70px; background:rgba(247,251,248,.72); border:1px solid var(--line-soft); border-bottom:none;
  backdrop-filter:blur(14px) saturate(1.15); -webkit-backdrop-filter:blur(14px) saturate(1.15);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:5px; position:relative;
  text-decoration:none; color:var(--bone-dim); font-size:12px; cursor:pointer; border-left:none; transition:all .25s; }
.ss-item:last-child { border-bottom:1px solid var(--line-soft); }
.ss-item .icon { font-size:24px; line-height:1; }
.ss-item:hover { background:var(--flame); border-color:var(--flame); color:#fff; }
.ss-popup { position:absolute; right:86px; top:50%; transform:translateY(-50%) translateX(8px);
  background:var(--bone); box-shadow:0 6px 24px rgba(14,34,51,.2); padding:14px 18px; white-space:nowrap;
  opacity:0; visibility:hidden; transition:all .25s; color:var(--ink); text-align:center; }
.ss-item:hover .ss-popup { opacity:1; visibility:visible; transform:translateY(-50%) translateX(0); }
.ss-popup img { width:210px; max-width:none; height:auto; display:block; background:#fff; }
.ss-popup .label { font-size:12px; color:var(--muted); margin-top:8px; }
.ss-popup .num { font-size:18px; font-weight:700; color:var(--flame); }
#ssTop { opacity:0; pointer-events:none; }
#ssTop.is-visible { opacity:1; pointer-events:auto; }
@media (max-width:768px) { .ss-bar{ display:none; } }

/* ============================================================= no-webgl fallback */
.word-fb{ display:none; }
.no-webgl #gl{ display:none; }
.no-webgl body{
  background:
    linear-gradient(180deg, rgba(143,212,255,.9), rgba(191,230,251,.65) 40%, rgba(230,244,252,.4) 68%, rgba(247,251,248,0) 100%),
    linear-gradient(0deg, rgba(240,96,58,.16), rgba(240,96,58,.16)) 0 100% / 100% 26vh no-repeat,
    repeating-linear-gradient(90deg, rgba(39,176,92,.16) 0 8vw, rgba(39,176,92,.08) 8vw 16vw) 0 74vh / 100% 26vh no-repeat,
    #cfeafb;
  background-attachment:fixed;
}
.no-webgl .sec::before{ background:rgba(247,251,248,.4); }
.no-webgl .word-fb{
  display:block; position:absolute; left:0; right:0; bottom:16%; z-index:1;
  font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif;
  font-weight:600; font-size:19vw; line-height:.9; letter-spacing:.04em; text-align:center; pointer-events:none;
  color:rgba(14,34,51,.16);
}

/* ============================================================= responsive */
@media (max-width:1080px){
  .gate-grid,.path-head,.cur-head,.about-split{ grid-template-columns:1fr; gap:22px; }
  .cards{ grid-template-columns:repeat(2,1fr); }
  .card:nth-child(3n+2),.card:nth-child(3n+3){ transform:none; }
  .brands{ grid-template-columns:repeat(4,1fr); }
  .grid-4{ grid-template-columns:repeat(2,1fr); }
  .contact-grid{ grid-template-columns:1fr; }
  .culture-cards{ grid-template-columns:1fr 1fr; }
  .product-layout{ grid-template-columns:210px minmax(0,1fr); }
  .product-grid{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:820px){
  :root{ --nav-h:66px; }
  .nav-links{ display:none; }
  .hero-top{ max-width:100%; }
  .hero-side{ display:none; }
  .chapters{ grid-template-columns:1fr 1fr; gap:16px; }
  .news-row{ grid-template-columns:1fr; gap:8px; }
  .news-row .when{ display:flex; gap:12px; align-items:baseline; }
  .grid-3,.cards,.culture-cards{ grid-template-columns:1fr; }
  .brands{ grid-template-columns:repeat(2,1fr); }
  .foot-grid{ grid-template-columns:1fr 1fr; }
  .foot-brand{ grid-column:1/-1; }
  .field-row{ grid-template-columns:1fr; }
  .stats{ grid-template-columns:repeat(3,1fr); gap:14px; }
  .rail{ display:none; }
  .about-split .im{ order:-1; }
  .product-layout{ grid-template-columns:1fr; }
  .product-sidebar{ position:static; }
  .product-sidebar ul{ display:flex; flex-wrap:wrap; gap:6px; margin-top:8px; }
  .product-sidebar li a{ border:1px solid var(--line-soft); border-radius:100px; padding:8px 14px; margin:0; }
  .product-grid{ grid-template-columns:repeat(2,1fr); gap:10px; }
}

/* ============================================================= reduced motion */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{ animation-duration:.001s !important; animation-iteration-count:1 !important; transition-duration:.001s !important; }
  [data-rv]{ opacity:1 !important; transform:none !important; }
  .mask-line > span{ transform:none !important; }
  .boot{ display:none; }
}