/* ===========================================================
   RUST · 腐蚀生存服  —  industrial punk theme
   =========================================================== */

@font-face{font-family:'Oswald';src:url('../font/oswald-latin-700-normal.woff2') format('woff2');
  font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:'Oswald';src:url('../font/oswald-latin-500-normal.woff2') format('woff2');
  font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'ShareTechMono';src:url('../font/share-tech-mono-latin-400-normal.woff2') format('woff2');
  font-weight:400;font-style:normal;font-display:swap}

:root{
  --soot:#0b0a09;
  --soot-2:#121010;
  --panel:#191513;
  --panel-2:#221b17;
  --steel:#3a3733;
  --steel-2:#55504a;
  --ink:#e8e2da;
  --ink-dim:#9a918688;
  --muted:#9a9186;
  --rust:#c1440e;
  --rust-hi:#f06a1e;
  --rust-lo:#7a2c0b;
  --hazard:#e8b21c;
  --acid:#9ccc3c;

  --head:'Oswald','Impact','Haettenschweiler','Arial Narrow Bold',
         'Noto Sans SC','Microsoft YaHei',sans-serif;
  --mono:'ShareTechMono','SFMono-Regular',Consolas,monospace;
  --body:system-ui,-apple-system,'Segoe UI','Noto Sans SC','Microsoft YaHei',sans-serif;

  --wrap:1180px;
}

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

html{scroll-behavior:smooth;scroll-padding-top:74px}

body{
  margin:0;
  background:var(--soot);
  color:var(--ink);
  font-family:var(--body);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.mono{font-family:var(--mono);letter-spacing:.02em}

.wrap{width:min(100% - 44px,var(--wrap));margin-inline:auto}

/* ---------- 全局质感覆盖层 ---------- */
.fx-grain{
  position:fixed;inset:-150%;z-index:9998;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4'/></filter><rect width='220' height='220' filter='url(%23n)'/></svg>");
  animation:grain 700ms steps(3,end) infinite;
}
@keyframes grain{
  0%{transform:translate(0,0)}25%{transform:translate(-3%,2%)}
  50%{transform:translate(2%,-3%)}75%{transform:translate(-2%,-2%)}
  100%{transform:translate(3%,1%)}
}
.fx-scan{
  position:fixed;inset:0;z-index:9997;pointer-events:none;opacity:.35;
  background:repeating-linear-gradient(to bottom,
    rgba(0,0,0,0) 0 2px, rgba(0,0,0,.28) 2px 3px);
  mix-blend-mode:multiply;
}

/* ---------- 危险条纹分隔 ---------- */
.hazard{
  height:9px;width:100%;
  background:repeating-linear-gradient(-45deg,
    var(--hazard) 0 14px, #17130a 14px 28px);
  box-shadow:0 0 0 1px #000 inset;
  opacity:.8;
}
.hazard--top{position:absolute;top:0;left:0;z-index:3}

/* ---------- 铆钉 ---------- */
.card__rivets,.plate__rivets{
  position:absolute;inset:8px;pointer-events:none;
  background-image:
    radial-gradient(circle,#6a635b 0 1.6px,#0000 2.2px),
    radial-gradient(circle,#6a635b 0 1.6px,#0000 2.2px),
    radial-gradient(circle,#6a635b 0 1.6px,#0000 2.2px),
    radial-gradient(circle,#6a635b 0 1.6px,#0000 2.2px);
  background-size:8px 8px;background-repeat:no-repeat;
  background-position:left top,right top,left bottom,right bottom;
  opacity:.75;
}

/* ===================== NAV ===================== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:12px clamp(16px,3vw,34px);
  background:linear-gradient(180deg,rgba(9,8,7,.96),rgba(9,8,7,.72));
  backdrop-filter:blur(9px);
  border-bottom:1px solid #000;
  box-shadow:0 1px 0 #2e2a26 inset,0 10px 30px -18px #000;
  transition:padding .25s ease,background .25s ease;
}
.nav.is-stuck{padding-block:7px;background:rgba(9,8,7,.98)}

.nav__brand{display:flex;align-items:center;gap:12px;min-width:0}
.nav__logo{height:30px;width:auto;filter:drop-shadow(0 2px 6px #000)}
.nav__sub{
  font-family:var(--head);font-weight:500;font-size:12px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--muted);
  padding-left:12px;border-left:1px solid var(--steel);white-space:nowrap;
}

.nav__links{display:flex;align-items:center;gap:clamp(14px,2vw,28px)}
.nav__links > a{
  font-family:var(--head);font-weight:500;font-size:14px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
  padding:6px 0;position:relative;transition:color .18s;
}
.nav__links > a::after{
  content:'';position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--rust-hi);transition:right .22s ease;
}
.nav__links > a:hover{color:var(--ink)}
.nav__links > a:hover::after{right:0}

.lang{display:flex;align-items:center;gap:5px;margin-left:6px;
  padding:5px 11px;border:1px solid var(--steel);background:#0c0a09}
.lang__btn{
  background:none;border:0;cursor:pointer;padding:0;
  font-family:var(--head);font-weight:500;font-size:13px;letter-spacing:.1em;
  color:var(--muted);transition:color .18s;
}
.lang__btn:hover{color:var(--ink)}
.lang__btn.is-on{color:var(--rust-hi)}
.lang__sep{color:var(--steel-2);font-size:12px}

.nav__burger{display:none;flex-direction:column;gap:5px;background:none;
  border:1px solid var(--steel);padding:9px;cursor:pointer}
.nav__burger span{display:block;width:20px;height:2px;background:var(--ink);transition:.25s}
.nav__burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav__burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===================== HERO ===================== */
.hero{
  position:relative;min-height:100svh;
  display:flex;align-items:center;justify-content:center;
  padding:120px 22px 90px;overflow:hidden;isolation:isolate;
}
.hero__bg{
  position:absolute;inset:0;z-index:-2;
  background:url('../img/library_hero.jpg') center/cover no-repeat;
  filter:saturate(.55) contrast(1.15) brightness(.42);
  transform:scale(1.06);
  animation:drift 30s ease-in-out infinite alternate;
}
@keyframes drift{from{transform:scale(1.06) translate3d(0,0,0)}
  to{transform:scale(1.14) translate3d(-1.5%,-1.5%,0)}}
.hero__vignette{
  position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(120% 85% at 50% 30%,rgba(193,68,14,.16),transparent 62%),
    linear-gradient(180deg,rgba(11,10,9,.86) 0%,rgba(11,10,9,.35) 40%,rgba(11,10,9,.98) 100%);
}

.hero__inner{max-width:900px;text-align:center;position:relative;z-index:2}

.chip{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 16px;margin-bottom:30px;
  border:1px solid var(--steel);background:rgba(8,7,6,.7);
  font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);
}
.chip__dot{
  width:8px;height:8px;border-radius:50%;background:var(--acid);
  box-shadow:0 0 0 0 rgba(156,204,60,.6);animation:pulse 2.1s infinite;
}
@keyframes pulse{
  70%{box-shadow:0 0 0 9px rgba(156,204,60,0)}
  100%{box-shadow:0 0 0 0 rgba(156,204,60,0)}
}

.hero__title{margin:0;line-height:.86;display:flex;flex-direction:column;align-items:center;gap:6px}
.hero__title-main{
  font-family:var(--head);font-weight:700;
  font-size:clamp(76px,17vw,190px);letter-spacing:.06em;text-transform:uppercase;
  background:linear-gradient(175deg,#efe6dc 8%,#c6a488 34%,#8c5a2e 58%,#c1440e 78%,#5e2408 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 5px 0 rgba(0,0,0,.55));
  position:relative;
}
.hero__title-cn{
  font-family:var(--head);font-weight:500;
  font-size:clamp(20px,4.2vw,40px);letter-spacing:.42em;text-indent:.42em;
  color:var(--rust-hi);text-shadow:0 2px 14px rgba(240,106,30,.35);
  display:inline-flex;align-items:baseline;flex-wrap:wrap;
  justify-content:center;gap:.3em;
}
/* 「5E社区服」金色高亮 */
.hero__title-gold{
  background:linear-gradient(178deg,#fff6d0 4%,#ffd970 26%,#e8b21c 52%,#c4890c 76%,#8a5f06 100%);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;
  text-shadow:none;
  filter:drop-shadow(0 0 14px rgba(232,178,28,.45)) drop-shadow(0 2px 0 rgba(0,0,0,.5));
}

.hero__tag{
  margin:30px auto 0;max-width:620px;
  color:#cfc5b9;font-size:clamp(15px,1.7vw,18px);
  text-shadow:0 2px 10px #000;
}

.hero__cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:38px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--head);font-weight:700;font-size:15px;
  letter-spacing:.16em;text-transform:uppercase;
  padding:15px 38px;cursor:pointer;position:relative;
  border:1px solid var(--steel-2);background:#14100e;color:var(--ink);
  clip-path:polygon(11px 0,100% 0,100% calc(100% - 11px),calc(100% - 11px) 100%,0 100%,0 11px);
  transition:transform .16s ease,box-shadow .16s ease,background .2s ease,color .2s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--primary{
  background:linear-gradient(180deg,var(--rust-hi),var(--rust) 55%,var(--rust-lo));
  border-color:#e2843f;color:#1a0d05;
  box-shadow:0 10px 28px -12px rgba(240,106,30,.85),0 1px 0 rgba(255,220,190,.45) inset;
}
.btn--primary:hover{box-shadow:0 16px 34px -12px rgba(240,106,30,1),0 1px 0 rgba(255,220,190,.55) inset}
.btn--ghost:hover{background:#1d1714;border-color:var(--rust);color:#fff}

.btn__ico{width:18px;height:18px;margin-right:11px;flex:none}
.btn--primary:hover .btn__ico{animation:dl 1.1s ease-in-out infinite}
@keyframes dl{0%,100%{transform:translateY(0)}50%{transform:translateY(3px)}}

.hero__dlnote{
  margin:16px 0 0;font-family:var(--mono);font-size:11.5px;
  letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
  text-shadow:0 2px 8px #000;
}

.hero__scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  width:1px;height:44px;background:linear-gradient(var(--steel-2),transparent)}
.hero__scroll span{position:absolute;top:0;left:-2px;width:5px;height:5px;border-radius:50%;
  background:var(--rust-hi);animation:fall 2.2s ease-in-out infinite}
@keyframes fall{0%{top:0;opacity:0}20%{opacity:1}80%{opacity:1}100%{top:40px;opacity:0}}

/* ===================== SECTION 通用 ===================== */
.sec{position:relative;padding:clamp(74px,9vw,118px) 0}
.sec--dark{background:var(--soot-2);border-block:1px solid #000;
  box-shadow:0 1px 0 #241f1b inset,0 -1px 0 #241f1b inset}

.sec__num{
  font-family:var(--head);font-weight:700;font-size:13px;letter-spacing:.4em;
  color:var(--rust);margin-bottom:10px;
}
.sec__title{
  font-family:var(--head);font-weight:700;
  font-size:clamp(30px,4.6vw,54px);letter-spacing:.04em;text-transform:uppercase;
  margin:0;line-height:1.1;color:#f2ece4;
}
.rule{width:76px;height:3px;margin:20px 0 22px;
  background:linear-gradient(90deg,var(--rust-hi),var(--rust-lo) 70%,transparent)}
.rule--center{margin-inline:auto}
.sec__lead{color:#c8bfb4;font-size:clamp(16px,1.8vw,19px);margin:0 0 18px}
.sec__head p{color:var(--muted);margin:0 0 16px}
.sec__head--center{text-align:center;max-width:720px;margin:0 auto 54px}

.wrap--split{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(30px,5vw,68px);align-items:center}

.ticks{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:12px}
.ticks li{position:relative;padding-left:30px;color:#c2b9ae;font-size:15px}
.ticks li::before{
  content:'';position:absolute;left:0;top:.62em;width:13px;height:13px;
  border:2px solid var(--rust-hi);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
}

/* ---------- 专用登陆器 ---------- */
.lch{
  position:relative;margin-top:30px;padding:26px 26px 24px 30px;
  background:linear-gradient(165deg,#221a14,#131010 70%);
  border:1px solid #3d3129;
  box-shadow:0 22px 44px -26px #000,0 1px 0 rgba(255,255,255,.04) inset;
  clip-path:polygon(16px 0,100% 0,100% calc(100% - 16px),calc(100% - 16px) 100%,0 100%,0 16px);
}
.lch__stripe{
  position:absolute;left:0;top:16px;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--rust-hi),var(--rust-lo));
}
.lch__head{display:flex;align-items:center;gap:15px;margin-bottom:14px}
.lch__ico{width:36px;height:36px;flex:none;color:var(--rust-hi);
  filter:drop-shadow(0 0 10px rgba(240,106,30,.4))}
.lch__head h3{
  font-family:var(--head);font-weight:700;font-size:19px;letter-spacing:.09em;
  text-transform:uppercase;margin:0;color:#f0eae2;
}
.lch__badge{
  display:inline-block;margin-top:5px;padding:2px 9px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;
  color:#1a0d05;background:linear-gradient(180deg,var(--rust-hi),var(--rust));
}
.lch > p{margin:0 0 20px;color:#b6ada2;font-size:14.5px;line-height:1.72}

.lch__steps{
  list-style:none;margin:0 0 20px;padding:0;
  display:flex;align-items:stretch;gap:0;flex-wrap:wrap;
}
.lch__steps li{
  flex:1 1 150px;display:flex;align-items:center;gap:11px;
  padding:12px 16px;background:#151110;border:1px solid #2d2620;position:relative;
}
.lch__steps li + li{border-left:0}
.lch__steps li + li::before{
  content:'';position:absolute;left:-7px;top:50%;transform:translateY(-50%) rotate(45deg);
  width:11px;height:11px;background:#151110;
  border-top:1px solid #2d2620;border-right:1px solid #2d2620;z-index:2;
}
.lch__steps b{
  font-family:var(--head);font-weight:700;font-size:20px;line-height:1;
  color:transparent;-webkit-text-stroke:1.2px var(--rust);flex:none;
}
.lch__steps span{font-size:13.5px;line-height:1.45;color:#a89f95}

.lch__cta{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--head);font-weight:700;font-size:13.5px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--rust-hi);
  padding-bottom:3px;border-bottom:1px solid rgba(240,106,30,.35);
  transition:color .18s ease,border-color .18s ease,gap .18s ease;
}
.lch__cta svg{width:16px;height:16px}
.lch__cta:hover{color:#ffb27a;border-color:var(--rust-hi);gap:14px}

.lch__rivets{
  position:absolute;inset:7px;pointer-events:none;
  background-image:
    radial-gradient(circle,#6a635b 0 1.6px,#0000 2.2px),
    radial-gradient(circle,#6a635b 0 1.6px,#0000 2.2px);
  background-size:8px 8px;background-repeat:no-repeat;
  background-position:right top,right bottom;opacity:.7;
}

@media (max-width:560px){
  .lch__steps li{flex:1 1 100%}
  .lch__steps li + li{border-left:1px solid #2d2620;border-top:0}
  .lch__steps li + li::before{display:none}
}

/* ---------- 反作弊铭牌 ---------- */
.ac{
  position:relative;margin-top:30px;padding:26px 26px 24px 30px;
  background:linear-gradient(165deg,#1d1814,#121010 70%);
  border:1px solid #37302a;
  box-shadow:0 22px 44px -26px #000,0 1px 0 rgba(255,255,255,.04) inset;
  clip-path:polygon(16px 0,100% 0,100% calc(100% - 16px),calc(100% - 16px) 100%,0 100%,0 16px);
}
.ac__stripe{
  position:absolute;left:0;top:16px;bottom:0;width:4px;
  background:repeating-linear-gradient(-45deg,
    var(--hazard) 0 7px,#191307 7px 14px);
  opacity:.85;
}
.ac__head{display:flex;align-items:center;gap:15px;margin-bottom:14px}
.ac__ico{width:38px;height:38px;flex:none;color:var(--acid);
  filter:drop-shadow(0 0 10px rgba(156,204,60,.35))}
.ac__head h3{
  font-family:var(--head);font-weight:700;font-size:19px;letter-spacing:.09em;
  text-transform:uppercase;margin:0;color:#f0eae2;
}
.ac__badge{
  display:inline-block;margin-top:5px;padding:2px 9px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;
  color:#0f1405;background:var(--acid);
}
.ac > p{margin:0 0 18px;color:#b6ada2;font-size:14.5px;line-height:1.72}

.ac__grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#2b2520;
  border:1px solid #2b2520}
.ac__item{background:#141110;padding:14px 16px;display:flex;flex-direction:column;gap:3px}
.ac__item b{
  font-family:var(--head);font-weight:700;font-size:13.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--hazard);
}
.ac__item i{font-style:normal;font-size:13px;line-height:1.6;color:#8f877d}
.ac__rivets{
  position:absolute;inset:7px;pointer-events:none;
  background-image:
    radial-gradient(circle,#6a635b 0 1.6px,#0000 2.2px),
    radial-gradient(circle,#6a635b 0 1.6px,#0000 2.2px);
  background-size:8px 8px;background-repeat:no-repeat;
  background-position:right top,right bottom;opacity:.7;
}

@media (max-width:560px){
  .ac__grid{grid-template-columns:1fr}
}

/* 金属铭牌 */
.plate{
  margin:0;position:relative;padding:12px;
  background:linear-gradient(145deg,#2b2521,#161311 45%,#241e1a);
  border:1px solid #3a332d;
  box-shadow:0 26px 54px -26px #000,0 1px 0 #4a423b inset;
}
.plate img{filter:saturate(.8) contrast(1.06)}
.plate figcaption{
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;
  color:var(--muted);text-align:center;padding-top:10px;
}

/* ===================== CARDS ===================== */
.grid{display:grid;gap:22px}
.grid--4{grid-template-columns:repeat(4,1fr)}

.card{
  position:relative;padding:32px 26px 28px;
  background:linear-gradient(170deg,var(--panel-2),var(--panel) 60%);
  border:1px solid #322b26;
  clip-path:polygon(18px 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%,0 18px);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card::before{
  content:'';position:absolute;left:0;top:0;width:100%;height:2px;
  background:linear-gradient(90deg,var(--rust),transparent);
  transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
}
.card:hover{transform:translateY(-6px);border-color:#5a4436;
  box-shadow:0 26px 46px -24px #000}
.card:hover::before{transform:scaleX(1)}
.card__icon{width:46px;height:46px;color:var(--rust-hi);margin-bottom:18px}
.card__icon svg{width:100%;height:100%;stroke-linecap:round;stroke-linejoin:round}
.card h3{
  font-family:var(--head);font-weight:700;font-size:20px;letter-spacing:.08em;
  text-transform:uppercase;margin:0 0 10px;color:#efe8e0;
}
.card p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.7}

/* ===================== STEPS ===================== */
.steps{list-style:none;counter-reset:s;padding:0;margin:0;
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{
  position:relative;padding:28px 24px 26px;
  background:linear-gradient(175deg,#171310,#0f0d0c);
  border:1px solid #2b2521;border-left:3px solid var(--rust-lo);
  transition:border-left-color .22s ease,transform .22s ease;
}
.step:hover{border-left-color:var(--rust-hi);transform:translateX(4px)}
.step__n{
  font-family:var(--head);font-weight:700;font-size:40px;line-height:1;
  color:transparent;-webkit-text-stroke:1.4px #4a3a2e;margin-bottom:12px;
}
.step:hover .step__n{-webkit-text-stroke-color:var(--rust)}
.step h3{font-family:var(--head);font-weight:700;font-size:18px;letter-spacing:.06em;
  margin:0 0 8px;color:#ece5dd}
.step p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.72}

/* ===================== GALLERY ===================== */
.gal{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;grid-auto-rows:190px}
.gal__item{margin:0;position:relative;overflow:hidden;border:1px solid #2b2521;background:#0a0908}
.gal__item--wide{grid-column:span 2;grid-row:span 2}
.gal__item img{width:100%;height:100%;object-fit:cover;
  filter:saturate(.6) contrast(1.08) brightness(.82);
  transition:transform .5s ease,filter .4s ease}
.gal__item:hover img{transform:scale(1.07);filter:saturate(1) contrast(1.05) brightness(1)}
.gal__item figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 14px 11px;
  font-family:var(--head);font-weight:500;font-size:13px;letter-spacing:.16em;
  text-transform:uppercase;color:#ece5dd;
  background:linear-gradient(transparent,rgba(5,4,4,.92));
}
.credit{text-align:center;color:#6f675f;font-size:12px;margin-top:26px}

/* ===================== FOOTER ===================== */
.foot{background:#070606;border-top:1px solid #000;position:relative}
.foot__inner{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;
  padding:56px 0 40px}
.foot__col{display:flex;flex-direction:column;gap:9px}
.foot__logo{height:26px;width:auto;opacity:.85;margin-bottom:6px}
.foot__col p{margin:0;color:var(--muted);font-size:14px;max-width:34ch}
.foot__col h4{font-family:var(--head);font-weight:700;font-size:13px;letter-spacing:.22em;
  text-transform:uppercase;color:#cdc4b9;margin:0 0 4px}
.foot__col a,.foot__col span{color:var(--muted);font-size:14px;transition:color .18s}
.foot__col a:hover{color:var(--rust-hi)}
.foot__bar{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  width:min(100% - 44px,var(--wrap));margin-inline:auto;
  padding:18px 0 26px;border-top:1px solid #1b1714;
  color:#5f584f;font-size:12px;letter-spacing:.04em;
}

/* ===================== 入场动画 ===================== */
.reveal{opacity:0;transform:translateY(26px);
  transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}

/* ===================== 响应式 ===================== */
@media (max-width:1040px){
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .wrap--split{grid-template-columns:1fr}
  .gal{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  .nav__burger{display:flex}
  .nav__sub{display:none}
  .nav__links{
    position:fixed;inset:60px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(9,8,7,.985);border-bottom:1px solid #000;padding:8px 22px 22px;
    transform:translateY(-130%);transition:transform .3s cubic-bezier(.2,.7,.3,1);
  }
  .nav__links.is-open{transform:none}
  .nav__links > a{padding:14px 0;border-bottom:1px solid #1d1916;font-size:15px}
  .lang{margin:16px 0 0;align-self:flex-start}
  .grid--4,.steps{grid-template-columns:1fr}
  .foot__inner{grid-template-columns:1fr;gap:28px}
  .gal{grid-template-columns:1fr;grid-auto-rows:170px}
  .gal__item--wide{grid-column:span 1;grid-row:span 1}
  .fx-scan{display:none}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}