/* =====================================================================
   BRS 服务器 · 宣传页
   暗色科技感 × 像素方块
   ===================================================================== */

:root{
  --bg:#06070c;
  --bg-2:#0a0d16;
  --panel:rgba(13,17,27,.72);
  --panel-solid:#0c1019;
  --ink:#eaf2ff;
  --dim:#8b9cb8;
  --dim-2:#5f6f8a;
  --cyan:#43e6ff;
  --cyan-soft:rgba(67,230,255,.14);
  --violet:#a97bff;
  --green:#7cf7a1;
  --gold:#ffce6a;
  --danger:#ff7a7a;
  --line:rgba(140,180,255,.13);
  --line-2:rgba(140,180,255,.28);
  --ease:cubic-bezier(.16,1,.3,1);
  --ease-io:cubic-bezier(.65,.05,.36,1);
  --radius:18px;
  --mono:"Cascadia Code","JetBrains Mono",ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;
  --sans:"PingFang SC","Microsoft YaHei UI","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}

html,body{
  height:100%;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

body{
  overflow:hidden;
  cursor:none;
}
body.is-locked{overflow:hidden}
body.no-cursor{cursor:auto}

::selection{background:rgba(67,230,255,.3);color:#fff}

button,a,input{font-family:inherit;color:inherit}
button{background:none;border:0;cursor:none}
a{color:inherit;text-decoration:none}
code{font-family:var(--mono);font-size:.9em;color:var(--cyan);
  background:rgba(67,230,255,.09);border:1px solid rgba(67,230,255,.18);
  padding:.1em .4em;border-radius:6px;white-space:nowrap}

/* ============================ 背景 ============================ */
#bg-canvas{
  position:fixed;inset:0;width:100%;height:100%;
  z-index:0;display:block;
}
.bg-grid{
  position:fixed;inset:-2px;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(120,180,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,180,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 45%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 45%,#000 30%,transparent 78%);
  opacity:.65;
}
.bg-vignette{
  position:fixed;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%,rgba(67,230,255,.06),transparent 70%),
    radial-gradient(ellipse 70% 60% at 80% 100%,rgba(169,123,255,.08),transparent 70%),
    radial-gradient(ellipse 102% 100% at 50% 46%,transparent 42%,rgba(3,4,8,.62) 100%);
}
.grain{
  position:fixed;inset:0;z-index:2;pointer-events:none;opacity:.32;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/><feColorMatrix type='saturate' values='0'/></filter><rect width='160' height='160' filter='url(%23n)' opacity='.5'/></svg>");
  mix-blend-mode:overlay;
}

/* 鼠标光晕 */
.cursor-glow{
  position:fixed;left:0;top:0;width:520px;height:520px;margin:-260px 0 0 -260px;
  z-index:3;pointer-events:none;border-radius:50%;
  background:radial-gradient(circle,rgba(67,230,255,.13),rgba(169,123,255,.07) 40%,transparent 68%);
  mix-blend-mode:screen;opacity:0;
  transition:opacity .6s ease;
  will-change:transform;
}
.cursor-dot{
  position:fixed;left:0;top:0;width:8px;height:8px;margin:-4px 0 0 -4px;
  z-index:60;pointer-events:none;border-radius:2px;
  background:var(--cyan);box-shadow:0 0 12px var(--cyan);
  transition:width .18s var(--ease),height .18s var(--ease),background .2s,opacity .3s;
  will-change:transform;opacity:0;
}
body.has-pointer .cursor-glow{opacity:1}
body.has-pointer .cursor-dot{opacity:1}
body.is-hovering .cursor-dot{width:26px;height:26px;margin:-13px 0 0 -13px;background:transparent;
  border:1px solid rgba(67,230,255,.8);box-shadow:0 0 24px rgba(67,230,255,.35)}

@media (hover:none){
  body{cursor:auto}
  .cursor-glow,.cursor-dot{display:none}
  button,a{cursor:pointer}
}

/* ============================ 开机 ============================ */
.boot{
  position:fixed;inset:0;z-index:100;
  display:flex;align-items:center;justify-content:center;
  background:radial-gradient(ellipse at 50% 45%,#0b1220 0%,#05060a 60%,#030407 100%);
  transition:opacity .9s var(--ease),transform 1.1s var(--ease),filter .9s;
}
.boot.is-gone{opacity:0;transform:scale(1.12);filter:blur(18px);pointer-events:none}
.boot-scan{
  position:absolute;inset:0;pointer-events:none;opacity:.25;
  background:repeating-linear-gradient(0deg,rgba(255,255,255,.06) 0 1px,transparent 1px 4px);
  mix-blend-mode:overlay;
}
.boot-inner{position:relative;text-align:center;padding:24px;width:min(560px,88vw)}
.boot-mark{display:flex;gap:.06em;justify-content:center;font-family:var(--mono);font-weight:800;
  font-size:clamp(64px,13vw,132px);line-height:.9;letter-spacing:-.04em}
.boot-mark span{
  display:inline-block;color:transparent;
  background:linear-gradient(180deg,#fff,#8fdcff 40%,#3aa8ff 70%,#1d5cff);
  -webkit-background-clip:text;background-clip:text;
  filter:drop-shadow(0 0 22px rgba(67,230,255,.4));
  animation:bootLetter .9s var(--ease) backwards;
}
.boot-mark span:nth-child(1){animation-delay:.1s}
.boot-mark span:nth-child(2){animation-delay:.22s}
.boot-mark span:nth-child(3){animation-delay:.34s}
@keyframes bootLetter{from{opacity:0;transform:translateY(40px) rotateX(-60deg)}to{opacity:1;transform:none}}

.boot-sub{font-family:var(--mono);font-size:11px;letter-spacing:.42em;color:var(--dim-2);margin:18px 0 34px}
.boot-bar{height:3px;background:rgba(255,255,255,.08);border-radius:99px;overflow:hidden;position:relative}
.boot-bar i{display:block;height:100%;width:0%;border-radius:99px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  box-shadow:0 0 18px rgba(67,230,255,.8);transition:width .25s linear}
.boot-tip{font-family:var(--mono);font-size:12px;color:var(--dim);margin-top:14px;letter-spacing:.08em;height:16px}
.boot-enter{
  margin-top:30px;position:relative;padding:16px 38px;border-radius:99px;
  border:1px solid rgba(67,230,255,.5);color:var(--ink);
  background:linear-gradient(180deg,rgba(67,230,255,.18),rgba(67,230,255,.04));
  font-size:16px;font-weight:600;letter-spacing:.08em;
  box-shadow:0 0 0 0 rgba(67,230,255,.35),0 18px 60px -20px rgba(67,230,255,.6);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .6s var(--ease),transform .6s var(--ease),box-shadow .3s;
}
.boot-enter small{display:block;margin-top:8px;font-size:11px;font-weight:400;
  color:var(--dim);letter-spacing:.06em}
.boot-enter.is-ready{opacity:1;transform:none;pointer-events:auto;animation:enterPulse 2.4s ease-in-out infinite}
.boot-enter:hover{box-shadow:0 0 0 8px rgba(67,230,255,.08),0 22px 70px -18px rgba(67,230,255,.8)}
@keyframes enterPulse{0%,100%{box-shadow:0 0 0 0 rgba(67,230,255,.3),0 18px 60px -20px rgba(67,230,255,.5)}
50%{box-shadow:0 0 0 12px rgba(67,230,255,0),0 18px 70px -14px rgba(67,230,255,.85)}}

/* ============================ 顶部进度 ============================ */
.progress{position:fixed;left:0;top:0;height:2px;width:100%;z-index:50;background:rgba(255,255,255,.05)}
.progress i{display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 60%,#fff);
  box-shadow:0 0 14px rgba(67,230,255,.9);
  transition:width .8s var(--ease)}

/* ============================ 导航点 ============================ */
.dots{position:fixed;right:clamp(14px,2.4vw,34px);top:50%;transform:translateY(-50%);
  z-index:40;display:flex;flex-direction:column;gap:14px;align-items:flex-end}
.dot{position:relative;display:flex;align-items:center;gap:10px;padding:2px 0;
  opacity:.55;transition:opacity .3s}
.dot em{font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--dim);
  opacity:0;transform:translateX(6px);transition:.35s var(--ease);white-space:nowrap}
.dot i{display:block;width:9px;height:9px;border-radius:3px;background:rgba(255,255,255,.22);
  transition:.4s var(--ease);position:relative}
.dot:hover,.dot.is-active{opacity:1}
.dot:hover em,.dot.is-active em{opacity:1;transform:none;color:var(--ink)}
.dot.is-active i{background:var(--cyan);box-shadow:0 0 12px var(--cyan),0 0 26px rgba(67,230,255,.5);
  width:9px;height:26px;border-radius:4px}
.dot.is-done i{background:rgba(67,230,255,.45)}

/* ============================ 品牌 ============================ */
.brand{position:fixed;left:clamp(16px,3vw,38px);bottom:clamp(14px,3vh,30px);z-index:40;
  display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;
  letter-spacing:.18em;color:var(--dim-2);opacity:0;transition:opacity .6s .3s}
body.is-started .brand{opacity:1}
.brand b{color:var(--ink);letter-spacing:.3em}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--green);
  box-shadow:0 0 10px var(--green);animation:blink 2.6s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.25}}
.brand-slash{opacity:.4}
.brand-total{opacity:.5}

/* ============================ 控制按钮 ============================ */
.controls{position:fixed;right:clamp(14px,2.4vw,34px);bottom:clamp(14px,3vh,30px);
  z-index:40;display:flex;gap:8px;opacity:0;transition:opacity .6s .3s}
body.is-started .controls{opacity:1}
.ctrl{
  position:relative;display:flex;align-items:center;gap:6px;
  height:34px;padding:0 12px;border-radius:99px;
  border:1px solid var(--line);background:rgba(12,16,26,.6);
  backdrop-filter:blur(10px);color:var(--dim);
  font-size:11px;letter-spacing:.08em;transition:.28s var(--ease);
}
.ctrl svg{width:15px;height:15px;fill:currentColor}
.ctrl:hover{border-color:var(--line-2);color:var(--ink);transform:translateY(-2px);
  box-shadow:0 8px 24px -10px rgba(67,230,255,.5)}
.ctrl[aria-pressed="true"]{color:var(--cyan);border-color:rgba(67,230,255,.4)}
.ctrl .ico-off{display:none}
.ctrl[aria-pressed="false"] .ico-on{display:none}
.ctrl[aria-pressed="false"] .ico-off{display:block}
@media (max-width:640px){.ctrl-label{display:none}.ctrl{padding:0 10px}}

/* ============================ 帮助面板 ============================ */
.help{position:fixed;inset:0;z-index:70;display:flex;align-items:center;justify-content:center;
  background:rgba(3,5,10,.72);backdrop-filter:blur(8px);
  opacity:0;pointer-events:none;transition:opacity .4s}
.help.is-open{opacity:1;pointer-events:auto}
.help-card{width:min(520px,92vw);background:linear-gradient(180deg,#0d1220,#0a0d16);
  border:1px solid var(--line-2);border-radius:22px;padding:28px;
  transform:translateY(18px) scale(.97);transition:.5s var(--ease);
  box-shadow:0 40px 120px -40px rgba(0,0,0,.9)}
.help.is-open .help-card{transform:none}
.help-card h3{font-size:16px;letter-spacing:.16em;margin-bottom:18px;color:var(--cyan);
  font-family:var(--mono);font-weight:600}
.help-card ul{list-style:none;display:grid;gap:12px;margin-bottom:22px}
.help-card li{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--dim)}
.help-card li span{margin-left:auto;color:var(--ink)}
kbd{display:inline-block;min-width:26px;text-align:center;font-family:var(--mono);font-size:11px;
  padding:3px 7px;border-radius:6px;background:rgba(255,255,255,.06);
  border:1px solid var(--line);border-bottom-width:2px;color:var(--ink)}

/* ============================ 幻灯片基础 ============================ */
.deck{position:fixed;inset:0;z-index:10}
.slide{
  position:absolute;inset:0;display:flex;
  opacity:0;visibility:hidden;
  transform:translate3d(0,7vh,0) scale(.955);
  filter:blur(14px);
  transition:opacity .9s var(--ease),transform 1.05s var(--ease),filter .9s var(--ease),visibility 0s linear 1.05s;
  will-change:opacity,transform,filter;
}
.slide.is-active{opacity:1;visibility:visible;transform:none;filter:none;z-index:2;
  transition:opacity .9s var(--ease),transform 1.05s var(--ease),filter .9s var(--ease),visibility 0s}
.slide.is-past{transform:translate3d(0,-7vh,0) scale(.955)}
.slide-body{
  position:relative;width:100%;max-width:1280px;margin:0 auto;
  padding:clamp(26px,5.5vh,72px) clamp(20px,4.4vw,64px);
  display:flex;flex-direction:column;justify-content:center;gap:clamp(16px,2.6vh,34px);
  max-height:100%;overflow-y:auto;overflow-x:hidden;
  scrollbar-width:thin;
}
.slide-body::-webkit-scrollbar{width:6px}
.slide-body::-webkit-scrollbar-thumb{background:rgba(140,180,255,.22);border-radius:99px}

/* 入场动画元素 */
[data-anim]{
  opacity:0;transition:opacity .85s var(--ease),transform 1s var(--ease),filter .85s var(--ease);
  transition-delay:calc(var(--i,0) * 90ms + 180ms);
  will-change:opacity,transform;
}
[data-anim="up"]{transform:translate3d(0,34px,0)}
[data-anim="left"]{transform:translate3d(-44px,0,0)}
[data-anim="right"]{transform:translate3d(44px,0,0)}
[data-anim="zoom"]{transform:scale(.9);filter:blur(6px)}
[data-anim="flip"]{transform:perspective(900px) rotateX(28deg) translateY(30px)}
.slide.is-active [data-anim]{opacity:1;transform:none;filter:none}
/* 离开时立刻归零，避免下次进来还在等延迟 */
.slide.is-left [data-anim]{transition-delay:0s!important;transition-duration:.3s!important}

.pop{animation:pop .45s var(--ease)}
@keyframes pop{0%{transform:scale(.7);opacity:.2}60%{transform:scale(1.08)}100%{transform:none;opacity:1}}
.copied{animation:copiedFlash .7s var(--ease)}
@keyframes copiedFlash{
  0%{box-shadow:0 0 0 0 rgba(124,247,161,.7)}
  60%{box-shadow:0 0 0 10px rgba(124,247,161,0)}
  100%{box-shadow:0 0 0 0 rgba(124,247,161,0)}
}

/* 标题体系 */
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:11px;letter-spacing:.24em;color:var(--cyan);
  text-transform:uppercase;opacity:.9;
}
.k-dot{width:6px;height:6px;background:var(--cyan);border-radius:1px;
  box-shadow:0 0 10px var(--cyan)}
.s-head{display:flex;flex-direction:column;gap:16px}
.s-head-row{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:40px;flex-wrap:wrap}
.s-title{font-size:clamp(24px,3.5vw,46px);line-height:1.22;font-weight:700;letter-spacing:-.01em}
.hl{background:linear-gradient(100deg,#fff 0%,var(--cyan) 45%,var(--violet) 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.s-sub{font-size:clamp(12px,1.15vw,14px);line-height:1.9;color:var(--dim);max-width:340px;
  border-left:1px solid var(--line-2);padding-left:16px}

.corner-note{position:absolute;left:clamp(20px,4vw,60px);bottom:clamp(56px,8vh,90px);
  font-family:var(--mono);font-size:10px;letter-spacing:.22em;color:var(--dim-2);opacity:.7}

/* ============================ 01 封面 ============================ */
.cover-body{gap:0;align-items:flex-start;justify-content:center}
.hero{position:relative;margin:18px 0 6px;line-height:.82;font-weight:800;letter-spacing:-.045em}
.hero-line{display:block}
.hero-line em{
  display:inline-block;font-style:normal;font-size:clamp(76px,15.5vw,214px);
  color:transparent;background:linear-gradient(178deg,#ffffff 4%,#bfe9ff 34%,#5fb8ff 58%,#2b6cff 92%);
  -webkit-background-clip:text;background-clip:text;
  filter:drop-shadow(0 18px 40px rgba(43,108,255,.28));
  animation:heroLetter 1.1s var(--ease) backwards;
}
.slide.is-active .hero-line em:nth-child(1){animation-delay:.25s}
.slide.is-active .hero-line em:nth-child(2){animation-delay:.37s}
.slide.is-active .hero-line em:nth-child(3){animation-delay:.49s}
@keyframes heroLetter{from{opacity:0;transform:translateY(70px) rotateX(-70deg) scale(.9)}
  to{opacity:1;transform:none}}
.hero-line-2{
  font-size:clamp(20px,3.1vw,44px);letter-spacing:.44em;color:var(--dim);
  margin-top:.55em;font-weight:400;text-indent:.44em;
  background:linear-gradient(90deg,var(--cyan),rgba(169,123,255,.9));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-glitch{
  position:absolute;left:2px;top:0;font-size:clamp(76px,15.5vw,214px);
  color:rgba(67,230,255,.5);opacity:0;pointer-events:none;mix-blend-mode:screen;
  letter-spacing:-.045em;
}
.slide.is-active .hero-glitch{animation:glitch 7s steps(1) infinite 2.4s}
@keyframes glitch{
  0%,92%,100%{opacity:0;transform:none}
  93%{opacity:.7;transform:translate(-5px,3px);clip-path:inset(12% 0 62% 0)}
  94%{opacity:.5;transform:translate(6px,-3px);clip-path:inset(58% 0 20% 0)}
  95%{opacity:0}
  96%{opacity:.6;transform:translate(-3px,0);clip-path:inset(30% 0 44% 0)}
}

.hero-desc{font-size:clamp(13px,1.5vw,19px);letter-spacing:.34em;color:var(--ink);opacity:.88;
  margin-top:10px;font-weight:300}
.hero-meta{display:flex;align-items:center;gap:14px;margin-top:22px;flex-wrap:wrap;
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--dim)}
.hero-meta i{width:4px;height:4px;border-radius:50%;background:var(--dim-2)}
.hero-cta{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}

.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 28px;border-radius:99px;font-size:14px;font-weight:600;letter-spacing:.04em;
  border:1px solid transparent;transition:transform .3s var(--ease),box-shadow .3s,background .3s,border-color .3s;
  overflow:hidden;white-space:nowrap;
}
.btn svg{width:18px;height:18px;transition:transform .3s var(--ease)}
.btn-primary{
  color:#03121a;
  background:linear-gradient(100deg,var(--cyan),#79f0ff 45%,var(--violet));
  box-shadow:0 14px 44px -16px rgba(67,230,255,.85),inset 0 1px 0 rgba(255,255,255,.5);
}
.btn-primary::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,transparent 20%,rgba(255,255,255,.55) 50%,transparent 80%);
  transform:translateX(-120%);transition:transform .8s var(--ease);
}
.btn-primary:hover::after{transform:translateX(120%)}
.btn-primary:hover{transform:translateY(-3px);
  box-shadow:0 20px 54px -14px rgba(67,230,255,.95),inset 0 1px 0 rgba(255,255,255,.6)}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-ghost{border-color:var(--line-2);color:var(--dim);background:rgba(255,255,255,.02)}
.btn-ghost:hover{color:var(--ink);border-color:var(--cyan);background:rgba(67,230,255,.07);
  transform:translateY(-3px);box-shadow:0 16px 40px -20px rgba(67,230,255,.7)}
.btn:focus-visible,.ctrl:focus-visible,.dot:focus-visible,.cmd-chip:focus-visible,
.ip-addr:focus-visible,.boot-enter:focus-visible,.replay:focus-visible{
  outline:2px solid rgba(67,230,255,.85);outline-offset:3px}
.btn:focus:not(:focus-visible),.boot-enter:focus:not(:focus-visible){outline:none}
.boot-enter:focus{outline:none}
.btn-sm{padding:10px 18px;font-size:12px}
.btn-lg{padding:18px 36px;font-size:16px}

.scroll-hint{display:flex;align-items:center;gap:12px;margin-top:clamp(24px,4vh,52px);
  font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--dim-2)}
.mouse{width:20px;height:30px;border:1px solid var(--dim-2);border-radius:99px;
  display:grid;place-items:center;padding-top:5px}
.mouse i{width:3px;height:6px;border-radius:2px;background:var(--cyan);
  animation:wheel 1.8s var(--ease) infinite}
@keyframes wheel{0%{opacity:0;transform:translateY(-2px)}30%{opacity:1}70%{opacity:1}100%{opacity:0;transform:translateY(8px)}}

/* 3D 方块 */
.cubes{position:absolute;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.cube{position:absolute;width:var(--s);height:var(--s);transform-style:preserve-3d;
  animation:cubeSpin var(--dur) linear infinite;opacity:.8;
  filter:drop-shadow(0 0 26px rgba(67,230,255,.35))}
.cube i{position:absolute;inset:0;border:1px solid rgba(130,225,255,.65);
  background:linear-gradient(135deg,rgba(67,230,255,.26),rgba(169,123,255,.10));
  box-shadow:inset 0 0 30px rgba(67,230,255,.22)}
.cube i:nth-child(1){transform:translateZ(calc(var(--s)/2))}
.cube i:nth-child(2){transform:rotateY(180deg) translateZ(calc(var(--s)/2))}
.cube i:nth-child(3){transform:rotateY(90deg) translateZ(calc(var(--s)/2))}
.cube i:nth-child(4){transform:rotateY(-90deg) translateZ(calc(var(--s)/2))}
.cube i:nth-child(5){transform:rotateX(90deg) translateZ(calc(var(--s)/2))}
.cube i:nth-child(6){transform:rotateX(-90deg) translateZ(calc(var(--s)/2))}
@keyframes cubeSpin{
  from{transform:rotateX(-18deg) rotateY(0) translateY(0)}
  50%{transform:rotateX(-8deg) rotateY(180deg) translateY(-26px)}
  to{transform:rotateX(-18deg) rotateY(360deg) translateY(0)}
}
.c1{--s:118px;--dur:26s;right:9%;top:20%}
.c2{--s:66px;--dur:19s;right:22%;top:56%;animation-delay:-6s}
.c3{--s:44px;--dur:15s;right:38%;top:12%;animation-delay:-3s;opacity:.4}
@media (max-width:900px){.cube{opacity:.3}.c1{right:4%;top:12%}}

/* ============================ 02 关于 ============================ */
.about-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(24px,3.4vw,54px);align-items:center}
.about-quote{position:relative;padding:clamp(22px,2.6vw,34px);
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(150deg,rgba(20,28,44,.72),rgba(10,13,22,.5));
  backdrop-filter:blur(8px)}
.about-quote::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:2px;
  background:linear-gradient(180deg,var(--cyan),transparent)}
.quote-mark{font-family:Georgia,serif;font-size:64px;line-height:.6;color:var(--cyan);opacity:.45;
  margin-bottom:6px}
.about-quote p{font-size:clamp(13px,1.25vw,16px);line-height:1.95;color:#c8d6ea}
.quote-by{margin-top:16px;font-size:12px;color:var(--dim-2);letter-spacing:.04em}

.stats{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.stat{background:rgba(9,12,20,.86);padding:clamp(16px,2vw,26px);
  display:flex;flex-direction:column;gap:8px;position:relative;transition:background .4s}
.stat:hover{background:rgba(67,230,255,.06)}
.stat b{font-family:var(--mono);font-size:clamp(26px,3.1vw,40px);font-weight:700;letter-spacing:-.03em;
  color:var(--ink);line-height:1;display:flex;align-items:baseline;gap:4px}
.stat b small{font-size:.55em;color:var(--cyan)}
.stat span{font-size:11px;color:var(--dim);letter-spacing:.06em}
.stat-money b{color:var(--gold);text-shadow:0 0 26px rgba(255,206,106,.28)}
.stat-money b small{color:var(--gold)}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-family:var(--mono);font-size:11px;color:var(--dim);letter-spacing:.05em;
  padding:7px 13px;border-radius:99px;border:1px solid var(--line);
  background:rgba(255,255,255,.02);transition:.3s var(--ease)}
.chip:hover{color:var(--cyan);border-color:rgba(67,230,255,.45);background:rgba(67,230,255,.07);
  transform:translateY(-2px)}

/* ============================ 03 玩法卡片 ============================ */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(10px,1.2vw,16px)}
.card{
  position:relative;padding:clamp(16px,1.9vw,24px);border-radius:16px;
  border:1px solid var(--line);background:linear-gradient(160deg,rgba(18,24,38,.82),rgba(8,11,18,.7));
  display:flex;flex-direction:column;gap:10px;
  transform-style:preserve-3d;
  transition:border-color .35s,box-shadow .45s,background .45s,transform .18s ease-out;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .45s;pointer-events:none;
  background:radial-gradient(340px circle at var(--mx,50%) var(--my,50%),rgba(67,230,255,.16),transparent 60%);
}
.card:hover{border-color:rgba(67,230,255,.45);
  box-shadow:0 26px 60px -34px rgba(67,230,255,.85),inset 0 1px 0 rgba(255,255,255,.06)}
.card:hover::before{opacity:1}
.card h3{font-size:clamp(15px,1.5vw,19px);font-weight:700;letter-spacing:.02em}
.card p{font-size:clamp(11px,1vw,12.6px);line-height:1.85;color:var(--dim);flex:1}
.card-tag{align-self:flex-start;font-family:var(--mono);font-size:10px;letter-spacing:.12em;
  color:var(--cyan);padding:4px 9px;border-radius:5px;border:1px solid rgba(67,230,255,.22);
  background:rgba(67,230,255,.06)}
.card-ico{width:38px;height:38px;border-radius:11px;position:relative;
  border:1px solid var(--line-2);background:rgba(255,255,255,.03);overflow:hidden}
.card-ico::after{content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 35% 30%,rgba(255,255,255,.35),transparent 55%)}
.ico-grass{background:linear-gradient(180deg,#7cf7a1 0 38%,#6b4a2e 38% 100%)}
.ico-red{background:linear-gradient(135deg,#ff6b6b,#a32424)}
.ico-fly{background:linear-gradient(135deg,#7fd7ff,#2a6cff)}
.ico-bot{background:linear-gradient(135deg,#ffd479,#c9862a)}
.ico-farm{background:linear-gradient(135deg,#ffe08a,#9ac86b)}
.ico-tech{background:linear-gradient(135deg,#c39bff,#5a2fd6)}

/* ============================ 04 硬件 ============================ */
.tech-grid{display:grid;grid-template-columns:1fr 1fr .86fr;gap:clamp(12px,1.5vw,20px);align-items:start}
.rack{border:1px solid var(--line);border-radius:16px;overflow:hidden;
  background:linear-gradient(180deg,rgba(16,22,36,.9),rgba(8,11,18,.8))}
.rack-head{display:flex;align-items:center;gap:10px;padding:12px 16px;
  border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.rack-head b{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--ink)}
.rack-head em{margin-left:auto;font-style:normal;font-family:var(--mono);font-size:10px;
  letter-spacing:.14em;color:var(--green)}
.rack-2 .rack-head em{color:var(--dim)}
.led{width:7px;height:7px;border-radius:50%}
.led-on{background:var(--green);box-shadow:0 0 10px var(--green);animation:blink 2s infinite}
.led-soft{background:var(--dim-2)}
.spec{list-style:none;padding:10px 16px 14px;display:grid;gap:2px}
.spec li{position:relative;display:grid;grid-template-columns:52px 1fr;gap:4px 10px;
  padding:9px 0;border-bottom:1px dashed rgba(140,180,255,.09)}
.spec li:last-child{border-bottom:0}
.spec li::after{content:"";position:absolute;left:0;bottom:-1px;height:1px;width:0;
  background:linear-gradient(90deg,var(--cyan),transparent);transition:width 1.1s var(--ease) .4s}
.slide.is-active .spec li::after{width:var(--w,60%)}
.spec span{font-size:10px;color:var(--dim-2);letter-spacing:.12em;align-self:center;
  font-family:var(--mono)}
.spec b{font-size:clamp(12px,1.15vw,14px);color:var(--ink);font-weight:600}
.spec em{grid-column:2;font-style:normal;font-size:10px;color:var(--dim-2);
  font-family:var(--mono);letter-spacing:.04em}
.rack-foot{display:flex;align-items:center;gap:10px;padding:11px 16px;
  border-top:1px solid var(--line);background:rgba(255,255,255,.015);
  font-family:var(--mono);font-size:10px;color:var(--dim-2);letter-spacing:.06em;flex-wrap:wrap}
.rack-foot b{color:var(--cyan);font-weight:500}
.rack-foot .sep{width:1px;height:10px;background:var(--line-2)}

.tech-side{display:grid;gap:10px}
.mini-card{border:1px solid var(--line);border-radius:14px;padding:14px 16px;
  background:rgba(11,15,24,.7);transition:.35s var(--ease)}
.mini-card:hover{border-color:rgba(67,230,255,.35);background:rgba(67,230,255,.05);
  transform:translateX(-3px)}
.mini-k{font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:var(--dim-2)}
.mini-card p{margin:8px 0 6px;font-size:13px;color:var(--ink);font-weight:600;letter-spacing:.02em}
.mini-card small{font-size:11px;line-height:1.7;color:var(--dim);display:block}

/* ============================ 05 跨平台 ============================ */
.cross-wrap{display:grid;grid-template-columns:1.08fr 1fr;gap:clamp(16px,2.4vw,32px);align-items:stretch}
.platforms{display:grid;grid-template-columns:1fr 1fr;gap:clamp(18px,2vw,30px);align-items:stretch;
  position:relative}
.pf{border:1px solid var(--line);border-radius:16px;padding:14px;background:rgba(12,16,26,.75);
  display:flex;flex-direction:column;gap:11px;transition:.4s var(--ease)}
.pf:hover{transform:translateY(-4px);border-color:var(--line-2)}
.pf-java:hover{border-color:rgba(124,247,161,.45);box-shadow:0 20px 50px -30px rgba(124,247,161,.7)}
.pf-bedrock:hover{border-color:rgba(255,206,106,.45);box-shadow:0 20px 50px -30px rgba(255,206,106,.7)}
.pf-badge{font-family:var(--mono);font-size:9px;letter-spacing:.16em;color:var(--dim-2)}
.pf-java .pf-badge{color:var(--green)}
.pf-bedrock .pf-badge{color:var(--gold)}
.pf-screen{flex:1;min-height:104px;border-radius:9px;border:1px solid var(--line);position:relative;
  display:grid;place-items:center;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(67,230,255,.10),transparent 46%),
    radial-gradient(80% 60% at 50% 108%,rgba(67,230,255,.10),transparent 70%),
    repeating-linear-gradient(0deg,rgba(255,255,255,.03) 0 1px,transparent 1px 12px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 12px),
    #090e16}
.pf-bedrock .pf-screen{
  background:
    linear-gradient(180deg,rgba(255,206,106,.12),transparent 46%),
    radial-gradient(80% 60% at 50% 108%,rgba(255,206,106,.10),transparent 70%),
    repeating-linear-gradient(0deg,rgba(255,255,255,.03) 0 1px,transparent 1px 12px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 12px),
    #100e0a}
.pf-screen::after{content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.08) 45%,transparent 60%);
  transform:translateX(-100%);animation:shine 5s var(--ease) infinite}
@keyframes shine{0%,60%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.pf-msg{font-family:var(--mono);font-size:10px;color:var(--dim);letter-spacing:.1em;z-index:1}
.pf ul{list-style:none;display:grid;gap:6px}
.pf li{font-size:11px;color:var(--dim);line-height:1.5;padding-left:12px;position:relative}
.pf li::before{content:"";position:absolute;left:0;top:6px;width:4px;height:4px;
  background:var(--cyan);border-radius:1px}
.link-glyph{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  z-index:2;width:38px;height:38px;display:grid;place-items:center;
  font-size:16px;color:var(--cyan);line-height:1;
  border-radius:12px;background:rgba(7,10,17,.95);
  border:1px solid rgba(67,230,255,.35);
  box-shadow:0 0 30px -6px rgba(67,230,255,.55),inset 0 0 18px rgba(67,230,255,.10);
  animation:linkPulse 3s ease-in-out infinite}
@keyframes linkPulse{0%,100%{box-shadow:0 0 30px -8px rgba(67,230,255,.5),inset 0 0 18px rgba(67,230,255,.1)}
  50%{box-shadow:0 0 42px -4px rgba(67,230,255,.8),inset 0 0 24px rgba(67,230,255,.2)}}

.steps{border:1px solid var(--line);border-radius:16px;padding:clamp(16px,2vw,22px);
  background:linear-gradient(160deg,rgba(17,23,37,.85),rgba(8,11,18,.7))}
.steps h4{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--cyan);
  margin-bottom:14px}
.steps ol{list-style:none;counter-reset:s;display:grid;gap:0}
.steps li{display:flex;gap:12px;padding:9px 0;position:relative;align-items:flex-start}
.steps li:not(:last-child)::before{content:"";position:absolute;left:13px;top:32px;bottom:-2px;
  width:1px;background:linear-gradient(180deg,rgba(67,230,255,.4),rgba(67,230,255,.05))}
.steps li b{flex:0 0 27px;height:27px;border-radius:8px;display:grid;place-items:center;
  font-family:var(--mono);font-size:10px;color:var(--cyan);
  border:1px solid rgba(67,230,255,.3);background:rgba(67,230,255,.07);z-index:1}
.steps li span{font-size:12px;line-height:1.6;color:#c3d1e5;padding-top:4px}
.steps li em{font-style:normal;color:var(--gold);font-size:11px}
.steps-note{margin-top:12px;padding-top:12px;border-top:1px dashed rgba(140,180,255,.14);
  font-size:11px;color:var(--dim);line-height:1.7}

/* ============================ 06 终端 ============================ */
.term-wrap{display:grid;grid-template-columns:1.35fr 1fr;gap:clamp(14px,2vw,26px);align-items:stretch}
.cmd-tip{
  margin-top:auto;padding:12px 14px;border-radius:12px;
  border:1px dashed rgba(255,206,106,.28);
  background:linear-gradient(140deg,rgba(255,206,106,.06),rgba(255,255,255,.015));
}
.cmd-tip b{display:block;font-size:11px;letter-spacing:.12em;color:var(--gold);
  font-family:var(--mono);margin-bottom:7px;font-weight:500}
.cmd-tip p{font-size:11.5px;line-height:1.75;color:var(--dim)}
.cmd-tip small{display:block;margin-top:6px;font-size:10.5px;color:var(--dim-2);line-height:1.6}

.term{border:1px solid var(--line-2);border-radius:14px;overflow:hidden;
  background:rgba(6,9,15,.92);display:flex;flex-direction:column;
  box-shadow:0 40px 90px -50px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.04)}
.term-bar{display:flex;align-items:center;gap:7px;padding:9px 13px;
  border-bottom:1px solid var(--line);background:rgba(255,255,255,.025)}
.t-dot{width:9px;height:9px;border-radius:50%}
.t-dot.r{background:#ff5f57}.t-dot.y{background:#febc2e}.t-dot.g{background:#28c840}
.term-bar b{margin-left:8px;font-family:var(--mono);font-size:10px;letter-spacing:.08em;
  color:var(--dim);font-weight:400}
.t-live{margin-left:auto;font-family:var(--mono);font-size:9px;letter-spacing:.16em;
  color:#ff7a7a;display:flex;align-items:center;gap:5px}
.t-live::before{content:"";width:5px;height:5px;border-radius:50%;background:#ff7a7a;
  box-shadow:0 0 8px #ff7a7a;animation:blink 1.6s infinite}
.term-body{padding:14px;height:clamp(180px,26vh,250px);overflow-y:auto;
  font-family:var(--mono);font-size:12px;line-height:1.85;scrollbar-width:thin}
.term-body::-webkit-scrollbar{width:5px}
.term-body::-webkit-scrollbar-thumb{background:rgba(140,180,255,.2);border-radius:9px}
.t-line{white-space:pre-wrap;word-break:break-word;animation:lineIn .32s var(--ease)}
@keyframes lineIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.t-sys{color:var(--dim-2)}
.t-cmd{color:var(--cyan)}
.t-cmd::before{content:"› ";color:var(--dim-2)}
.t-ok{color:var(--green)}
.t-info{color:#c3d1e5}
.t-warn{color:var(--gold)}
.t-err{color:#ff8a8a}
.t-dim{color:var(--dim-2)}
.term-input{display:flex;align-items:center;gap:8px;padding:10px 14px;
  border-top:1px solid var(--line);background:rgba(255,255,255,.02)}
.t-prompt{font-family:var(--mono);color:var(--cyan);font-size:14px}
.term-input input{flex:1;background:transparent;border:0;outline:none;
  font-family:var(--mono);font-size:12.5px;color:var(--ink);letter-spacing:.02em}
.term-input input::placeholder{color:var(--dim-2)}
.t-send{font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--cyan);
  border:1px solid rgba(67,230,255,.3);border-radius:6px;padding:5px 10px;
  background:rgba(67,230,255,.08);transition:.25s}
.t-send:hover{background:rgba(67,230,255,.18);transform:translateY(-1px)}

.cmd-side{display:flex;flex-direction:column;gap:10px}
.cmd-group{border-left:1px solid var(--line);padding-left:12px}
.cmd-group h5{font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:var(--dim-2);
  margin-bottom:7px;font-weight:400}
.cmd-chips{display:flex;flex-wrap:wrap;gap:6px}
.cmd-chip{font-family:var(--mono);font-size:10.5px;color:var(--dim);
  padding:6px 10px;border-radius:7px;border:1px solid var(--line);
  background:rgba(255,255,255,.02);transition:.22s var(--ease);white-space:nowrap}
.cmd-chip:hover{color:var(--cyan);border-color:rgba(67,230,255,.5);
  background:rgba(67,230,255,.09);transform:translateY(-2px);
  box-shadow:0 8px 20px -12px rgba(67,230,255,.8)}
.cmd-chip:active{transform:translateY(0) scale(.96)}

/* ============================ 07 账本 ============================ */
.ledger-wrap{display:grid;grid-template-columns:1fr 1fr;gap:clamp(16px,2.4vw,32px);align-items:start}
.ledger-nums{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.ln{border:1px solid var(--line);border-radius:14px;padding:clamp(14px,1.6vw,20px);
  background:rgba(11,15,24,.72);display:flex;flex-direction:column;gap:8px;
  transition:.35s var(--ease);position:relative;overflow:hidden}
.ln:hover{transform:translateY(-3px);border-color:var(--line-2)}
.ln span{font-size:10.5px;color:var(--dim-2);letter-spacing:.1em}
.ln b{font-family:var(--mono);font-size:clamp(20px,2.3vw,30px);font-weight:700;letter-spacing:-.03em;
  color:var(--ink);display:flex;align-items:baseline;gap:2px}
.ln b em{font-style:normal}
.ln b small{font-size:.45em;color:var(--dim-2);margin-left:2px}
.ln b.neg{color:#ff9d9d}
.ln-hl{background:linear-gradient(140deg,rgba(67,230,255,.13),rgba(169,123,255,.07));
  border-color:rgba(67,230,255,.35)}
.ln-hl b{color:var(--cyan);text-shadow:0 0 30px rgba(67,230,255,.35)}
.ln-hl::after{content:"";position:absolute;right:-30px;top:-30px;width:90px;height:90px;
  border-radius:50%;background:radial-gradient(circle,rgba(67,230,255,.3),transparent 70%)}

.ledger-detail{border:1px solid var(--line);border-radius:14px;padding:clamp(16px,2vw,22px);
  background:rgba(10,14,22,.72)}
.ledger-detail h4{font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--dim-2);
  margin-bottom:12px}
.ledger-detail ul{list-style:none;display:grid;gap:0;margin-bottom:14px}
.ledger-detail li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;
  font-size:11.5px;color:var(--dim);border-bottom:1px dashed rgba(140,180,255,.1)}
.ledger-detail li:last-child{border-bottom:0}
.ledger-detail li b{font-family:var(--mono);color:var(--ink);white-space:nowrap;font-weight:600}
.ledger-bar{position:relative;height:6px;border-radius:99px;background:rgba(255,255,255,.07);
  overflow:hidden;margin-bottom:9px}
.ledger-bar i{display:block;height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  box-shadow:0 0 16px rgba(67,230,255,.55);
  transition:width 1.4s var(--ease) .5s}
.slide.is-active .ledger-bar i{width:var(--p,50%)}
.ledger-scale{display:flex;justify-content:space-between;font-family:var(--mono);font-size:10px;
  color:var(--dim-2);letter-spacing:.06em}

.sponsors{margin-top:6px;border-top:1px solid var(--line);padding-top:12px;
  display:flex;align-items:center;gap:16px;overflow:hidden}
.sponsors-label{font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:var(--dim-2);
  white-space:nowrap}
.sponsors-label small{opacity:.7}
.marquee{flex:1;overflow:hidden;mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.marquee-track{display:flex;gap:8px;width:max-content;animation:marq 42s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes marq{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.sp{display:flex;align-items:center;gap:7px;white-space:nowrap;
  font-size:11px;color:var(--dim);padding:5px 11px;border-radius:99px;
  border:1px solid var(--line);background:rgba(255,255,255,.02)}
.sp b{font-family:var(--mono);font-size:10px;color:var(--gold);font-weight:600}
.sp:first-child{color:var(--ink);border-color:rgba(255,206,106,.4);background:rgba(255,206,106,.07)}

/* ============================ 08 加入 ============================ */
.join-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(16px,2.4vw,34px);align-items:start}
.ip-col{display:flex;flex-direction:column;gap:10px}
.ip-card{border:1px solid var(--line);border-radius:14px;padding:12px 14px;
  background:rgba(10,14,22,.72);transition:.35s var(--ease)}
.ip-card:hover{border-color:var(--line-2);transform:translateY(-2px)}
.ip-primary{border-color:rgba(67,230,255,.32);
  background:linear-gradient(140deg,rgba(67,230,255,.1),rgba(10,14,22,.8));
  box-shadow:0 24px 60px -44px rgba(67,230,255,.9)}
.ip-dim{opacity:.82}
.ip-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:9px}
.ip-badge{font-family:var(--mono);font-size:9px;letter-spacing:.13em;color:var(--cyan);
  border:1px solid rgba(67,230,255,.28);border-radius:5px;padding:3px 7px;
  background:rgba(67,230,255,.08)}
.ip-badge-warn{color:var(--gold);border-color:rgba(255,206,106,.3);background:rgba(255,206,106,.08)}
.ip-plat{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;color:var(--dim-2)}
.ip-addr{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;
  padding:8px 10px;border-radius:9px;border:1px dashed rgba(140,180,255,.2);
  font-family:var(--mono);font-size:clamp(12px,1.35vw,16px);color:var(--ink);
  letter-spacing:.01em;transition:.28s var(--ease);text-align:left;background:rgba(0,0,0,.22)}
.ip-addr:hover{border-color:var(--cyan);background:rgba(67,230,255,.1);color:#fff;
  box-shadow:0 0 0 4px rgba(67,230,255,.07)}
.ip-addr svg{width:15px;height:15px;flex:0 0 auto;color:var(--dim);transition:.28s}
.ip-addr:hover svg{color:var(--cyan);transform:scale(1.08)}
.ip-alt{display:flex;flex-wrap:wrap;gap:8px;margin-top:9px;
  font-size:10px;color:var(--dim-2);font-family:var(--mono);align-items:center}
.ip-alt code{font-size:10px;padding:.2em .45em;cursor:none}
.ip-alt code:hover{border-color:var(--cyan);color:#fff}
.ip-note{font-size:11px;color:var(--dim-2);line-height:1.75;margin-top:2px}

.join-side{display:flex;flex-direction:column;gap:12px}
.ver-badge{border:1px solid var(--line);border-radius:14px;padding:14px 18px;
  display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(169,123,255,.1),rgba(10,14,22,.8))}
.ver-badge span{font-family:var(--mono);font-size:9px;letter-spacing:.2em;color:var(--dim-2)}
.ver-badge b{font-family:var(--mono);font-size:clamp(24px,2.6vw,34px);letter-spacing:-.02em;
  color:var(--ink);line-height:1}
.ver-badge small{font-size:10px;color:var(--dim);letter-spacing:.06em}
.how{border:1px solid var(--line);border-radius:14px;padding:14px 18px;background:rgba(10,14,22,.7)}
.how h4{font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--cyan);
  margin-bottom:10px}
.how ol{list-style:none;display:grid;gap:6px}
.how li{font-size:11.5px;color:var(--dim);display:flex;gap:9px;line-height:1.6}
.how li b{flex:0 0 17px;height:17px;border-radius:5px;display:grid;place-items:center;
  font-family:var(--mono);font-size:9px;color:var(--cyan);background:rgba(67,230,255,.1);
  border:1px solid rgba(67,230,255,.2)}
.contact{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.contact .btn{flex:1;min-width:0}
.contact-more{font-size:10.5px;color:var(--dim-2);line-height:1.7}

/* ============================ 09 结尾 ============================ */
.end-body{align-items:center;text-align:center;gap:0}
.end-title{font-size:clamp(30px,5.6vw,72px);line-height:1.24;font-weight:800;letter-spacing:-.02em;
  margin:20px 0 14px}
.end-sub{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--dim);
  margin-bottom:34px}
.end-cta{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.end-meta{display:flex;align-items:center;gap:12px;margin-top:28px;
  font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:var(--dim-2);flex-wrap:wrap}
.end-meta i{width:4px;height:4px;border-radius:50%;background:var(--dim-2)}
.replay{display:inline-flex;align-items:center;gap:8px;margin-top:32px;
  font-size:11px;color:var(--dim);letter-spacing:.1em;padding:8px 14px;border-radius:99px;
  border:1px solid transparent;transition:.3s var(--ease)}
.replay svg{width:14px;height:14px}
.replay:hover{color:var(--cyan);border-color:rgba(67,230,255,.3);background:rgba(67,230,255,.06)}
.replay:hover svg{transform:rotate(-40deg)}

/* ============================ Toast ============================ */
.toast{position:fixed;left:50%;bottom:clamp(70px,10vh,110px);z-index:80;
  transform:translate(-50%,24px);opacity:0;pointer-events:none;
  padding:11px 22px;border-radius:99px;
  background:rgba(9,13,20,.92);border:1px solid rgba(67,230,255,.4);
  color:var(--ink);font-size:12.5px;letter-spacing:.06em;
  box-shadow:0 20px 50px -20px rgba(0,0,0,.9),0 0 0 6px rgba(67,230,255,.05);
  backdrop-filter:blur(10px);transition:.45s var(--ease)}
.toast.is-show{opacity:1;transform:translate(-50%,0)}
.toast.is-ok{border-color:rgba(124,247,161,.5)}
.toast.is-ok #toastText::before{content:"✓ ";color:var(--green)}

/* ============================ 响应式 ============================ */
@media (max-width:1080px){
  .tech-grid{grid-template-columns:1fr 1fr}
  .tech-side{grid-column:1/-1;grid-template-columns:repeat(3,1fr);display:grid}
  .term-wrap{grid-template-columns:1fr}
}
@media (max-width:900px){
  .s-head-row{flex-direction:column;align-items:flex-start;gap:12px}
  .s-sub{max-width:100%;border-left:0;padding-left:0}
  .about-grid,.cross-wrap,.ledger-wrap,.join-grid,.cards{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr 1fr}
  .platforms{grid-template-columns:1fr;gap:8px}
  .link-glyph{flex-direction:row;gap:8px}
  .link-glyph i{width:60px;height:1px;background:linear-gradient(90deg,transparent,var(--cyan),transparent)}
  .link-glyph i::after{left:0;top:-2px;animation:travelX 2.4s var(--ease-io) infinite}
  @keyframes travelX{0%{left:0;opacity:0}20%{opacity:1}80%{opacity:1}100%{left:56px;opacity:0}}
  .tech-side{grid-template-columns:1fr}
  .dots{display:none}
  body{cursor:auto}
  .cursor-glow,.cursor-dot{display:none}
  .slide-body{justify-content:flex-start;padding-top:clamp(58px,8vh,84px);padding-bottom:104px}
  .cover-body{align-items:flex-start;justify-content:center;padding-top:40px}
  .end-body{justify-content:center;padding-top:40px}
  .brand,.corner-note{display:none}
  .controls{gap:6px}
  .help-card{padding:22px}
}
@media (max-width:640px){
  .cubes{display:none}
  .cards{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .ledger-nums{grid-template-columns:1fr 1fr}
  .hero-desc{letter-spacing:.14em;line-height:1.8}
  .hero-meta{font-size:9.5px;gap:8px}
  .hero-cta .btn,.end-cta .btn{flex:1}
  .scroll-hint{display:none}
  .term-body{height:170px}
  .sponsors{flex-direction:column;align-items:flex-start;gap:8px}
  .marquee{width:100%}
  .brand{font-size:9px}
}

/* 矮屏 */
@media (max-height:720px) and (min-width:901px){
  .slide-body{padding-top:60px;padding-bottom:60px;gap:14px}
  .hero-line em{font-size:clamp(64px,11vw,150px)}
  .cubes{opacity:.7}
}

/* 减弱动效 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;
    transition-duration:.15s!important}
}