/* ===========================================================
   ACMAX 官网 · 科技风样式
   配色 / 布局 / 动效都集中在这里，改颜色只要改下面的变量
   =========================================================== */

:root{
  --bg:        #05070e;
  --bg-2:      #080d18;
  --panel:     rgba(11,19,34,.72);
  --panel-2:   rgba(11,19,34,.9);
  --line:      rgba(96,166,255,.16);
  --line-2:    rgba(96,166,255,.32);
  --cyan:      #22e0ff;
  --blue:      #3b82f6;
  --violet:    #8b5cf6;
  --green:     #34d399;
  --amber:     #ffc53d;
  --text:      #dde8ff;
  --muted:     #8296b8;
  --muted-2:   #5d6f8f;
  /* ---------- 表面 / 文字令牌（明暗主题共用，深色值为原始值） ---------- */
  --s-panel-a:      rgba(12,20,36,.9);
  --s-panel-a-86:   rgba(12,20,36,.86);
  --s-panel-a-92:   rgba(12,20,36,.92);
  --s-panel-a-60:   rgba(12,20,36,.6);
  --s-panel-b:      rgba(8,13,24,.9);
  --s-panel-b-86:   rgba(8,13,24,.86);
  --s-panel-b-95:   rgba(8,13,24,.95);
  --s-panel-c-95:   rgba(7,11,21,.95);
  --s-nav-70:       rgba(11,19,34,.7);
  --s-nav-66:       rgba(11,19,34,.66);
  --s-nav-86:       rgba(11,19,34,.86);
  --s-navbar:       rgba(6,10,20,.72);
  --s-input:        rgba(6,10,20,.85);
  --s-footer:       rgba(5,8,15,.86);
  --s-stage-veil:   rgba(5,8,16,.55);
  --s-node:         rgba(8,13,24,.96);
  --s-term-a:       rgba(10,17,30,.95);
  --s-term-b:       rgba(7,12,22,.95);
  --s-menu:         rgba(7,12,22,.96);
  --s-join-a:       rgba(14,24,42,.95);
  --s-chip-a:       rgba(14,22,40,.92);
  --s-chip-b:       rgba(9,14,26,.92);
  --s-owner-a:      rgba(35,27,10,.92);
  --s-owner-b:      rgba(14,11,5,.92);
  --s-admin-a:      rgba(12,26,38,.92);
  --s-admin-b:      rgba(8,14,24,.92);
  --tint-03:        rgba(255,255,255,.03);
  --tint-05:        rgba(255,255,255,.05);
  --tint-hover:     rgba(90,160,255,.07);
  --tint-section:   rgba(96,166,255,.08);
  --term-dot:       #2c3b57;
  --strong:         #fff;
  --term-text:      #a9c2e6;
  --term-muted:     #7c8cab;
  --hero-sub:       #b8cdf0;
  --shadow-deep:    rgba(0,0,0,.9);
  --toast-text:     #eaf7ff;
  --radius:    14px;
  --maxw:      1180px;
  --font: "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, "JetBrains Mono", "SFMono-Regular", monospace;
}

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

html{ scroll-behavior:smooth; }

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

a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; }
h1,h2,h3{ margin:0; line-height:1.25; letter-spacing:.02em; }
p{ margin:0 0 1em; }
b{ color:var(--strong); font-weight:600; }

.mono{ font-family:var(--mono); letter-spacing:.06em; }
.wrap{ width:min(100% - 48px, var(--maxw)); margin:0 auto; }

/* ---------- 背景层 ---------- */
.bg-grid,.bg-glow,.bg-scan,.bg-noise{ position:fixed; inset:0; pointer-events:none; }

.bg-grid{
  z-index:0;
  background-image:
    linear-gradient(rgba(90,160,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90,160,255,.055) 1px, transparent 1px);
  background-size:64px 64px, 64px 64px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%, #000 20%, transparent 78%);
}

.bg-glow{
  z-index:0;
  background:
    radial-gradient(900px 520px at 12% -8%,  rgba(34,224,255,.16), transparent 65%),
    radial-gradient(760px 460px at 88% 4%,   rgba(139,92,246,.16), transparent 62%),
    radial-gradient(700px 500px at 50% 108%, rgba(59,130,246,.14), transparent 68%),
    linear-gradient(180deg, #05070e 0%, #070c17 45%, #05070e 100%);
}

.bg-scan{
  z-index:3;
  background:repeating-linear-gradient(180deg, rgba(255,255,255,.028) 0 1px, transparent 1px 3px);
  mix-blend-mode:overlay;
  opacity:.5;
}

#net{ position:fixed; inset:0; z-index:1; pointer-events:none; opacity:.7; }

main,.nav,.footer{ position:relative; z-index:4; }

/* ---------- 导航 ---------- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:20;
  display:flex; align-items:center; gap:20px;
  padding:14px clamp(16px,4vw,40px);
  transition:background .3s, border-color .3s, backdrop-filter .3s, padding .3s;
  border-bottom:1px solid transparent;
}
.nav.is-stuck{
  background:var(--s-navbar);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
  padding-top:10px; padding-bottom:10px;
}

.brand{ display:flex; align-items:center; gap:10px; margin-right:auto; }
.brand-mark{ color:var(--cyan); display:flex; filter:drop-shadow(0 0 10px rgba(34,224,255,.55)); }
.brand-text{ font-size:22px; font-weight:800; letter-spacing:.14em; }
.brand-text em{ font-style:normal; color:var(--cyan); }
.brand-sub{
  font-family:var(--mono); font-size:10px; letter-spacing:.28em;
  color:var(--muted-2); padding-left:10px; margin-left:2px;
  border-left:1px solid var(--line-2); align-self:center;
}

.nav-links{ display:flex; gap:4px; }
.nav-links a{
  position:relative; padding:8px 14px; font-size:14px; color:var(--muted);
  border-radius:8px; transition:color .2s, background .2s;
}
.nav-links a::after{
  content:""; position:absolute; left:14px; right:14px; bottom:3px; height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan),transparent);
  transform:scaleX(0); transition:transform .28s;
}
.nav-links a:hover{ color:var(--strong); background:var(--tint-hover); }
.nav-links a:hover::after{ transform:scaleX(1); }

.nav-toggle{
  display:none; width:40px; height:40px; border:1px solid var(--line-2); border-radius:10px;
  background:var(--s-nav-70); cursor:pointer; padding:9px 8px;
  flex-direction:column; justify-content:space-between;
}
.nav-toggle span{ display:block; height:2px; background:var(--cyan); border-radius:2px; transition:.25s; }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 22px; border-radius:10px; cursor:pointer;
  font-size:15px; font-weight:600; letter-spacing:.02em;
  border:1px solid var(--line-2); background:var(--s-panel-a-60); color:var(--text);
  transition:transform .18s, box-shadow .25s, background .25s, border-color .25s, color .25s;
  position:relative; overflow:hidden; white-space:nowrap;
}
.btn .ico{ font-size:11px; color:var(--cyan); }
.btn:hover{ transform:translateY(-2px); border-color:var(--cyan); box-shadow:0 8px 30px -12px rgba(34,224,255,.6); }
.btn:active{ transform:translateY(0); }

.btn-primary{
  background:linear-gradient(135deg, rgba(34,224,255,.92), rgba(59,130,246,.92));
  color:#03121c; border-color:transparent; font-weight:700;
  box-shadow:0 10px 34px -14px rgba(34,224,255,.85);
}
.btn-primary .ico{ color:#03121c; }
.btn-primary:hover{ color:#03121c; box-shadow:0 14px 40px -12px rgba(34,224,255,1); }
.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%);
}
.btn-primary:hover::after{ animation:sheen .8s ease; }
@keyframes sheen{ to{ transform:translateX(120%); } }

.btn-sm{ padding:9px 14px; font-size:13px; }
.btn-block{ width:100%; }
.btn-ghost:hover{ color:var(--strong); background:rgba(34,224,255,.1); }

/* ---------- 首屏 ---------- */
.hero{
  min-height:100svh; display:flex; flex-direction:column; justify-content:center;
  padding:150px 0 90px; position:relative;
}
.hero-inner{ width:min(100% - 48px, var(--maxw)); margin:0 auto; }

.status-pill{
  display:inline-flex; align-items:center; gap:9px; margin-bottom:26px;
  padding:7px 16px; border-radius:999px; font-size:13px; color:var(--muted);
  border:1px solid var(--line-2); background:var(--s-nav-66);
  backdrop-filter:blur(8px); font-family:var(--mono); letter-spacing:.06em;
}
.status-pill b{ color:var(--green); }
.dot{
  width:8px; height:8px; border-radius:50%; background:var(--green);
  box-shadow:0 0 0 0 rgba(52,211,153,.7); animation:pulse 2s infinite;
}
@keyframes pulse{
  70%{ box-shadow:0 0 0 10px rgba(52,211,153,0); }
  100%{ box-shadow:0 0 0 0 rgba(52,211,153,0); }
}

.hero-title{
  font-size:clamp(64px, 13vw, 168px); font-weight:900; letter-spacing:.06em;
  line-height:.95; margin:0 0 10px;
  background:linear-gradient(180deg,#ffffff 6%, #9fd8ff 46%, #2b6fd8 100%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
  filter:drop-shadow(0 6px 44px rgba(34,224,255,.32));
}
.glitch{ position:relative; }
.glitch::before,.glitch::after{
  content:attr(data-text); position:absolute; inset:0;
  background:none; -webkit-text-fill-color:currentColor; color:var(--cyan);
  opacity:0; pointer-events:none;
}
.glitch::before{ color:#ff4d6d; animation:glitch-a 5.5s infinite steps(1); }
.glitch::after{ color:#22e0ff; animation:glitch-b 5.5s infinite steps(1); }
@keyframes glitch-a{
  0%,92%,100%{ opacity:0; transform:none; }
  93%{ opacity:.55; transform:translate(-3px,1px); clip-path:inset(12% 0 62% 0); }
  95%{ opacity:.5;  transform:translate(3px,-2px); clip-path:inset(58% 0 18% 0); }
  97%{ opacity:0; }
}
@keyframes glitch-b{
  0%,92%,100%{ opacity:0; transform:none; }
  94%{ opacity:.45; transform:translate(3px,-1px); clip-path:inset(38% 0 40% 0); }
  96%{ opacity:0; }
}

.hero-sub{
  font-size:clamp(17px,2.1vw,22px); color:var(--hero-sub); margin:0 0 14px;
  letter-spacing:.06em;
}
.hero-sub b{ color:var(--cyan); }

.hero-desc{ max-width:640px; color:var(--muted); font-size:15px; }

.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin:30px 0 52px; }

.stats{
  display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:1px;
  border:1px solid var(--line); border-radius:var(--radius); overflow:hidden;
  background:var(--line); max-width:820px;
}
.stat{ background:linear-gradient(180deg, var(--s-panel-a-86), var(--s-panel-b-86)); padding:18px 20px; }
.stat-k{ font-family:var(--mono); font-size:11px; letter-spacing:.16em; color:var(--muted-2); margin-bottom:6px; }
.stat-v{ font-size:20px; font-weight:700; }
.stat-v.ok{ color:var(--green); }
.stat-v.todo-v{ color:var(--amber); font-size:16px; }
.stat-v.mono{ font-family:var(--mono); font-size:17px; color:var(--cyan); letter-spacing:.05em; }

.scroll-hint{
  position:absolute; left:50%; bottom:26px; transform:translateX(-50%);
  width:24px; height:40px; border:1px solid var(--line-2); border-radius:14px;
  display:flex; justify-content:center; padding-top:7px;
}
.scroll-hint span{
  width:3px; height:8px; border-radius:2px; background:var(--cyan);
  animation:scroll-dot 1.8s infinite;
}
@keyframes scroll-dot{ 0%{opacity:0;transform:translateY(0);} 40%{opacity:1;} 100%{opacity:0;transform:translateY(14px);} }

/* ---------- 通用区块 ---------- */
.section{ padding:clamp(72px,10vw,128px) 0; position:relative; }
.section + .section{ border-top:1px solid var(--tint-section); }

.sec-head{ display:flex; align-items:center; gap:18px; margin-bottom:46px; }
.sec-no{ font-family:var(--mono); font-size:13px; color:var(--cyan); letter-spacing:.18em; }
.sec-title{ font-size:clamp(26px,3.4vw,38px); font-weight:800; letter-spacing:.05em; }
.sec-line{
  flex:1; height:1px;
  background:linear-gradient(90deg, var(--line-2), transparent);
}

/* ---------- 待补充标记 ---------- */
.chip{
  display:inline-block; margin-left:8px; padding:1px 9px; border-radius:999px;
  font-size:11px; font-family:var(--mono); letter-spacing:.1em;
  color:var(--amber); border:1px solid rgba(255,197,61,.4); background:rgba(255,197,61,.1);
  vertical-align:middle; white-space:nowrap;
}
.ph{
  position:relative; padding-left:16px; color:var(--muted);
  border-left:2px dashed rgba(255,197,61,.42);
}
.ph-inline{ color:var(--amber); border-bottom:1px dashed rgba(255,197,61,.5); }

/* ---------- 服务器介绍 ---------- */
.about-grid{
  display:grid; grid-template-columns:1.15fr .85fr; gap:40px; align-items:start;
}
.about-copy p{ font-size:15.5px; }

.terminal{
  border:1px solid var(--line-2); border-radius:var(--radius); overflow:hidden;
  background:linear-gradient(180deg, var(--s-term-a), var(--s-term-b));
  box-shadow:0 30px 70px -40px var(--shadow-deep);
}
.term-bar{
  display:flex; align-items:center; gap:7px; padding:10px 14px;
  border-bottom:1px solid var(--line); background:var(--tint-03);
}
.term-dot{ width:10px; height:10px; border-radius:50%; background:var(--term-dot); }
.term-dot:nth-child(1){ background:#ff5f57; }
.term-dot:nth-child(2){ background:#febc2e; }
.term-dot:nth-child(3){ background:#28c840; }
.term-name{ margin-left:8px; font-family:var(--mono); font-size:11px; color:var(--muted-2); letter-spacing:.1em; }
.term-body{
  margin:0; padding:18px 18px 22px; font-family:var(--mono); font-size:13px;
  line-height:2; color:var(--term-text); white-space:pre-wrap; word-break:break-word;
}
.t-c{ color:var(--cyan); } .t-m{ color:var(--term-muted); } .t-g{ color:var(--green); }

/* ---------- 周目历程 ---------- */
.timeline{ position:relative; padding-left:36px; max-width:820px; }
.timeline::before{
  content:""; position:absolute; left:9px; top:10px; bottom:10px; width:2px;
  background:linear-gradient(180deg, rgba(96,166,255,.55), rgba(34,224,255,.25) 55%, rgba(34,224,255,0));
}
.tl-item{ position:relative; padding-bottom:24px; }
.tl-item:last-child{ padding-bottom:0; }
.tl-node{
  position:absolute; left:-36px; top:22px; width:20px; height:20px; border-radius:50%;
  display:grid; place-items:center; background:var(--s-node);
  border:2px solid var(--line-2); transition:border-color .3s, box-shadow .3s;
}
.tl-node::after{ content:""; width:6px; height:6px; border-radius:50%; background:var(--muted-2); }
.tl-item.is-current .tl-node{
  border-color:var(--cyan);
  box-shadow:0 0 0 6px rgba(34,224,255,.1), 0 0 26px rgba(34,224,255,.65);
}
.tl-item.is-current .tl-node::after{ background:var(--cyan); }
.tl-card{
  position:relative; padding:20px 24px; border-radius:var(--radius);
  border:1px solid var(--line); background:var(--panel);
  transition:transform .28s, border-color .28s, box-shadow .28s;
}
.tl-card::after{
  content:""; position:absolute; left:0; top:0; width:100%; height:1px;
  background:linear-gradient(90deg, transparent, var(--cyan), transparent);
  transform:scaleX(0); transform-origin:left; transition:transform .45s;
}
.tl-card:hover{ transform:translateX(5px); border-color:var(--line-2); box-shadow:0 24px 56px -36px rgba(34,224,255,.65); }
.tl-card:hover::after{ transform:scaleX(1); }
.tl-head{ display:flex; align-items:center; gap:12px; margin-bottom:10px; flex-wrap:wrap; }
.tl-tag{ font-size:18px; font-weight:700; letter-spacing:.04em; }
.tl-status{
  font-family:var(--mono); font-size:11px; letter-spacing:.14em;
  padding:3px 11px; border-radius:999px; white-space:nowrap;
}
.tl-status.done{ color:var(--muted); border:1px solid var(--line-2); background:var(--tint-section); }
.tl-status.live{ color:var(--green); border:1px solid rgba(52,211,153,.42); background:rgba(52,211,153,.1); }
.tl-status.live::before{
  content:""; display:inline-block; width:6px; height:6px; border-radius:50%;
  background:var(--green); margin-right:7px; vertical-align:middle;
  animation:pulse 2s infinite;
}
.tl-date{ font-size:14.5px; color:var(--cyan); letter-spacing:.08em; margin-bottom:8px; }
.tl-desc{ margin:0; font-size:14.5px; color:var(--muted); }

/* ---------- 服务器信息 ---------- */
.info-grid{
  display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:1px;
  background:var(--line); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden;
}
.info-row{
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:16px 22px; background:linear-gradient(180deg, var(--s-panel-a), var(--s-panel-b));
  transition:background .25s;
}
.info-row:hover{ background:rgba(34,224,255,.07); }
.info-k{ font-size:14px; color:var(--muted); font-family:var(--mono); letter-spacing:.08em; }
.info-v{ font-size:15px; font-weight:600; text-align:right; }
.info-v.mono{ color:var(--cyan); }
.info-row:last-child:nth-child(odd){ grid-column:1 / -1; }

.note{
  margin:22px 0 0; font-size:13.5px; color:var(--muted-2);
  padding-left:14px; border-left:2px solid var(--line-2);
}

/* ---------- 开源项目 ---------- */
.projects{ display:grid; grid-template-columns:1fr; gap:18px; }

.project-card{
  position:relative; overflow:hidden;
  padding:26px 28px; border-radius:var(--radius); border:1px solid var(--line);
  background:linear-gradient(180deg,var(--s-panel-a),var(--s-panel-b));
  transition:border-color .25s, transform .25s, box-shadow .25s;
}
.project-card::before{
  content:""; position:absolute; left:0; top:0; width:2px; height:100%;
  background:linear-gradient(180deg,var(--cyan),rgba(34,224,255,0) 72%);
  opacity:.55; transition:opacity .25s;
}
.project-card:hover{
  border-color:var(--line-2); transform:translateY(-3px);
  box-shadow:0 18px 44px -28px rgba(34,224,255,.55);
}
.project-card:hover::before{ opacity:1; }

.project-head{ display:flex; align-items:center; flex-wrap:wrap; gap:10px; margin-bottom:14px; }
.project-tag{
  padding:2px 10px; border-radius:999px; font-size:11px; letter-spacing:.12em;
  color:var(--cyan); border:1px solid rgba(34,224,255,.32); background:rgba(34,224,255,.09);
}
.project-link{
  margin-left:auto; font-family:var(--mono); font-size:13px; letter-spacing:.06em;
  color:var(--cyan); border-bottom:1px solid rgba(34,224,255,.4); padding-bottom:1px;
  transition:color .2s, border-color .2s;
}
.project-link:hover{ color:var(--strong); border-color:var(--strong); }
.project-links{ margin-left:auto; display:flex; align-items:center; flex-wrap:wrap; gap:8px 18px; }
.project-links .project-link{ margin-left:0; }

.project-name{ font-size:22px; font-weight:800; margin-bottom:10px; }
.project-name em{ font-style:normal; color:var(--cyan); }
.project-desc{ margin:0 0 18px; font-size:14.5px; color:var(--muted); }
.project-desc .mono{ color:var(--cyan); }

.project-meta{
  display:flex; flex-wrap:wrap; gap:10px 28px;
  padding-top:16px; border-top:1px dashed var(--line);
}
.project-meta span{ font-family:var(--mono); font-size:12.5px; letter-spacing:.06em; color:var(--muted-2); }
.project-meta b{ margin-left:10px; color:var(--text); font-weight:600; }

/* ---------- 加入方式 ---------- */
.join{ display:grid; grid-template-columns:1.25fr .75fr; gap:34px; align-items:start; }
.join-steps{ display:flex; flex-direction:column; gap:14px; }

.step{
  display:flex; gap:20px; padding:22px 24px; border-radius:var(--radius);
  border:1px solid var(--line); background:var(--panel); transition:border-color .25s, transform .25s;
}
.step:hover{ border-color:var(--line-2); transform:translateX(4px); }
.step-no{
  font-family:var(--mono); font-size:26px; font-weight:700; line-height:1;
  color:transparent; -webkit-text-stroke:1.4px rgba(34,224,255,.75);
  min-width:52px;
}
.step-body h3{ font-size:17px; margin-bottom:6px; }
.step-body p{ margin:0; font-size:14.5px; color:var(--muted); }
.step-body p.ph{ font-size:14px; }

.join-card{
  position:relative; padding:34px 28px; border-radius:var(--radius); text-align:center;
  border:1px solid var(--line-2); background:linear-gradient(180deg, var(--s-join-a), var(--s-panel-b-95));
  overflow:hidden; box-shadow:0 30px 70px -40px rgba(34,224,255,.75);
}
.join-card-glow{
  position:absolute; inset:-40% -20% auto; height:200px;
  background:radial-gradient(closest-side, rgba(34,224,255,.3), transparent);
  filter:blur(8px); pointer-events:none;
}
.join-card-k{ font-family:var(--mono); font-size:12px; letter-spacing:.24em; color:var(--muted); margin-bottom:12px; }
.join-card-v{
  font-size:clamp(28px,4.4vw,40px); font-weight:800; color:var(--strong); letter-spacing:.08em;
  text-shadow:0 0 26px rgba(34,224,255,.7); margin-bottom:14px; position:relative;
}
.join-card-tip{ font-size:13.5px; color:var(--muted); margin-bottom:22px; }
.join-card-note{ font-size:12.5px; color:var(--muted-2); margin:16px 0 0; }

/* ---------- 常见问题 ---------- */
.faq{ display:flex; flex-direction:column; gap:12px; }
.faq-item{
  border:1px solid var(--line); border-radius:12px; background:var(--panel);
  overflow:hidden; transition:border-color .25s, background .25s;
}
.faq-item[open]{ border-color:var(--line-2); background:var(--panel-2); }
.faq-item summary{
  cursor:pointer; padding:18px 22px; font-size:15.5px; font-weight:600;
  list-style:none; display:flex; align-items:center; gap:14px; transition:color .2s;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::before{
  content:"+"; font-family:var(--mono); color:var(--cyan); font-size:18px;
  width:18px; text-align:center; transition:transform .25s;
}
.faq-item[open] summary::before{ content:"−"; }
.faq-item summary:hover{ color:var(--strong); }
.faq-body{ padding:0 22px 20px 54px; font-size:14.5px; color:var(--muted); }
.faq-body .mono{ color:var(--cyan); }

/* ---------- 页脚 ---------- */
.footer{
  border-top:1px solid var(--line); background:var(--s-footer);
  padding:52px 0 40px; backdrop-filter:blur(8px);
}
.footer-inner{
  display:grid; grid-template-columns:auto 1fr auto; gap:34px; align-items:center;
}
.footer-brand .brand-text{ font-size:26px; }
.footer-desc{ margin:6px 0 0; font-size:13px; color:var(--muted-2); font-family:var(--mono); letter-spacing:.12em; }
.footer-links{ display:flex; flex-wrap:wrap; gap:8px 22px; justify-content:center; }
.footer-links a{ font-size:14px; color:var(--muted); transition:color .2s; }
.footer-links a:hover{ color:var(--cyan); }
.footer-meta{ text-align:right; }
.copyright{ margin:12px 0 0; font-size:12px; color:var(--muted-2); }
.icp-record{ margin:6px 0 0; font-size:12px; color:var(--muted-2); }
.icp-record a{ color:var(--muted-2); text-decoration:none; transition:color .2s; }
.icp-record a:hover{ color:var(--cyan); }

/* ---------- 回到顶部 / 复制提示 ---------- */
.to-top{
  position:fixed; right:26px; bottom:26px; z-index:30;
  width:46px; height:46px; border-radius:12px; cursor:pointer;
  border:1px solid var(--line-2); background:var(--s-nav-86); color:var(--cyan);
  font-size:18px; backdrop-filter:blur(10px);
  opacity:0; visibility:hidden; transform:translateY(10px);
  transition:.28s;
}
.to-top.show{ opacity:1; visibility:visible; transform:none; }
.to-top:hover{ border-color:var(--cyan); box-shadow:0 10px 30px -12px rgba(34,224,255,.8); }

.toast{
  position:fixed; left:50%; bottom:38px; z-index:40; transform:translate(-50%,20px);
  padding:12px 24px; border-radius:10px; font-size:14px; font-weight:600;
  background:rgba(34,224,255,.14); border:1px solid var(--line-2); color:var(--toast-text);
  backdrop-filter:blur(12px); opacity:0; visibility:hidden; transition:.3s;
  box-shadow:0 16px 40px -20px rgba(34,224,255,.9);
}
.toast.show{ opacity:1; visibility:visible; transform:translate(-50%,0); }

/* ---------- 滚动出现 ---------- */
.reveal{ opacity:0; transform:translateY(22px); transition:opacity .7s cubic-bezier(.2,.7,.3,1), transform .7s cubic-bezier(.2,.7,.3,1); }
.reveal.in{ opacity:1; transform:none; }

/* ---------- 玩家名单 ---------- */
.players{ display:grid; grid-template-columns:1.12fr .88fr; gap:34px; align-items:start; }

.players-panel{
  border:1px solid var(--line); border-radius:var(--radius);
  background:linear-gradient(180deg,var(--s-panel-a),var(--s-panel-b));
  padding:20px;
}
.players-bar{ display:flex; align-items:center; justify-content:space-between; gap:14px; margin-bottom:16px; }
.players-count{ font-family:var(--mono); font-size:13px; color:var(--muted); letter-spacing:.08em; }
.players-count b{ color:var(--cyan); font-size:16px; }
.players-search{
  width:160px; padding:8px 14px; border-radius:999px; font:inherit; font-size:13px;
  color:var(--text); background:var(--s-input); border:1px solid var(--line-2); outline:none;
  transition:border-color .2s, box-shadow .2s;
}
.players-search::placeholder{ color:var(--muted-2); }
.players-search:focus{ border-color:rgba(34,224,255,.55); box-shadow:0 0 0 3px rgba(34,224,255,.12); }

.players-grid{
  display:grid; grid-template-columns:repeat(auto-fill,minmax(132px,1fr)); gap:10px;
  max-height:496px; overflow-y:auto; padding-right:6px;
}
.players-grid::-webkit-scrollbar{ width:6px; }
.players-grid::-webkit-scrollbar-thumb{ background:rgba(34,224,255,.25); border-radius:99px; }
.players-empty{ margin:0; font-size:13px; color:var(--muted); line-height:1.9; }
.players-empty code{ font-family:var(--mono); font-size:12px; color:var(--cyan); }

.p-chip{
  display:flex; align-items:center; gap:10px; width:100%; text-align:left; font:inherit;
  padding:8px 12px 8px 8px; border-radius:12px; cursor:pointer;
  color:var(--text); border:1px solid var(--line);
  background:linear-gradient(180deg,var(--s-chip-a),var(--s-chip-b));
  transition:border-color .22s, background .22s, transform .22s, box-shadow .22s;
}
.p-chip.is-owner{ border-color:rgba(255,197,61,.42); background:linear-gradient(180deg,var(--s-owner-a),var(--s-owner-b)); }
.p-chip.is-admin{ border-color:rgba(34,224,255,.3); background:linear-gradient(180deg,var(--s-admin-a),var(--s-admin-b)); }
.p-body{ display:flex; flex-direction:column; align-items:flex-start; gap:3px; min-width:0; }
.p-role{
  font-family:var(--mono); font-size:9.5px; font-weight:700; letter-spacing:.1em;
  line-height:1.5; padding:0 6px; border-radius:999px; border:1px solid currentColor;
}
.p-chip.is-owner .p-role{ color:var(--amber); }
.p-chip.is-admin .p-role{ color:var(--cyan); }
.p-chip:hover{ border-color:rgba(34,224,255,.4); background:rgba(34,224,255,.08); transform:translateY(-1px); }
.p-chip.is-active{
  border-color:rgba(34,224,255,.75); background:rgba(34,224,255,.12);
  box-shadow:0 0 0 1px rgba(34,224,255,.3), 0 0 26px -10px rgba(34,224,255,.85);
}
.p-chip[hidden]{ display:none; }
.p-head{ width:34px; height:34px; flex:none; border-radius:8px; background:var(--tint-05); image-rendering:pixelated; }
.p-chip.is-missing .p-head{ opacity:.5; }
.p-chip.is-missing .p-name{ color:var(--muted); }
.p-name{ font-size:13.5px; font-weight:600; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }

.skin-stage{
  position:sticky; top:96px; overflow:hidden;
  border:1px solid var(--line); border-radius:var(--radius);
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(34,224,255,.12), transparent 62%),
    linear-gradient(180deg,var(--s-panel-a-92),var(--s-panel-c-95));
}
.skin-stage-head{
  display:flex; align-items:baseline; justify-content:space-between; gap:12px;
  padding:16px 20px; border-bottom:1px solid var(--line);
}
.skin-title{ font-size:16px; font-weight:700; letter-spacing:.02em; }
.skin-meta{ font-family:var(--mono); font-size:11.5px; color:var(--muted-2); text-align:right; }
.skin-canvas-wrap{ position:relative; aspect-ratio:1 / 1.08; }
/* 脚下的接地投影：skinview3d 只画模型，这层用 CSS 补回来（画在 canvas 下面） */
.skin-canvas-wrap::before{
  content:""; position:absolute; left:50%; bottom:5.5%; width:44%; height:9%;
  transform:translateX(-50%); border-radius:50%; pointer-events:none;
  background:radial-gradient(50% 50% at 50% 50%, rgba(0,0,0,.42), rgba(0,0,0,0) 72%);
}
[data-theme="light"] .skin-canvas-wrap::before{
  background:radial-gradient(50% 50% at 50% 50%, rgba(0,0,0,.22), rgba(0,0,0,0) 72%);
}
#skinCanvas{ display:block; width:100%; height:100%; cursor:grab; position:relative; z-index:1; }
#skinCanvas.is-dragging{ cursor:grabbing; }
.skin-tip{
  position:absolute; left:50%; bottom:10px; transform:translateX(-50%);
  font-family:var(--mono); font-size:11px; letter-spacing:.12em; color:var(--muted-2);
  pointer-events:none;
}
.skin-loading{
  position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  font-family:var(--mono); font-size:12px; letter-spacing:.14em; color:var(--cyan);
  background:var(--s-stage-veil); backdrop-filter:blur(2px);
}
.skin-loading[hidden]{ display:none; }
.skin-actions{ display:flex; flex-wrap:wrap; gap:8px; padding:14px 16px; border-top:1px solid var(--line); }
.skin-actions .btn.is-on{ color:var(--cyan); border-color:rgba(34,224,255,.6); background:rgba(34,224,255,.12); }

/* ---------- 响应式 ---------- */
@media (max-width:1040px){
  .about-grid,.join,.players{ grid-template-columns:1fr; }
  .skin-stage{ position:static; }
  .footer-inner{ grid-template-columns:1fr; text-align:center; }
  .footer-links{ justify-content:center; }
  .footer-meta{ text-align:center; }
}

@media (max-width:820px){
  .nav-links{
    position:fixed; top:64px; left:12px; right:12px; flex-direction:column;
    padding:12px; border-radius:14px; border:1px solid var(--line-2);
    background:var(--s-menu); backdrop-filter:blur(16px);
    transform:translateY(-12px); opacity:0; visibility:hidden; transition:.25s;
  }
  .nav-links.open{ transform:none; opacity:1; visibility:visible; }
  .nav-links a{ padding:12px 14px; font-size:15px; }
  .nav-toggle{ display:flex; }
  .brand-sub{ display:none; }
  .nav-cta .btn{ display:none; }
  .stats{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .info-grid{ grid-template-columns:1fr; }
}

@media (max-width:560px){
  .wrap,.hero-inner{ width:min(100% - 32px, var(--maxw)); }
  .hero{ padding-top:118px; }
  .timeline{ padding-left:30px; }
  .tl-node{ left:-30px; width:17px; height:17px; }
  .tl-card{ padding:18px 18px; }
  .hero-actions .btn{ width:100%; }
  .players-panel{ padding:14px; }
  .players-grid{ grid-template-columns:repeat(auto-fill,minmax(110px,1fr)); max-height:none; }
  .players-search{ width:116px; }
  .players-bar{ flex-wrap:wrap; }
  .skin-canvas-wrap{ aspect-ratio:1 / 1; }
  .project-card{ padding:22px 20px; }
  .project-link{ margin-left:0; }
  .project-links{ margin-left:0; }
  .footer-links{ gap:8px 16px; font-size:13px; }
  .to-top{ right:16px; bottom:16px; }
}

@media (prefers-reduced-motion:reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; }
  html{ scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; }
}
/* ===========================================================
   明暗切换
   - 深色（默认）就是上面的原始配色，未做任何改动
   - 浅色主题只覆盖变量与少量硬编码色，开关在导航右侧
   =========================================================== */

html{ color-scheme:dark; }

.nav-cta{ display:flex; align-items:center; gap:10px; }

.theme-toggle{
  width:38px; height:38px; flex:none; padding:0; cursor:pointer;
  display:grid; place-items:center; border-radius:10px;
  border:1px solid var(--line-2); background:var(--s-nav-70); color:var(--muted);
  transition:color .2s, border-color .2s, background .25s, transform .2s;
}
.theme-toggle:hover{ color:var(--cyan); border-color:var(--cyan); transform:translateY(-1px); }
.theme-toggle svg{ width:18px; height:18px; display:block; }
.theme-toggle .tt-moon{ display:none; }
html[data-theme="light"] .theme-toggle .tt-sun{ display:none; }
html[data-theme="light"] .theme-toggle .tt-moon{ display:block; }

body{ transition:background-color .3s ease, color .3s ease; }

/* ---------- 浅色主题变量 ---------- */
html[data-theme="light"]{
  color-scheme:light;
  --bg:        #f2f5fb;
  --bg-2:      #e8eefb;
  --panel:     rgba(255,255,255,.78);
  --panel-2:   rgba(255,255,255,.96);
  --line:      rgba(21,58,116,.14);
  --line-2:    rgba(21,58,116,.30);
  --cyan:      #0a7ea4;
  --blue:      #2563eb;
  --violet:    #6d4bd8;
  --green:     #0f9d63;
  --amber:     #a9700a;
  --text:      #101a2b;
  --muted:     #4c5c74;
  --muted-2:   #6c7c94;
  --s-panel-a:      rgba(255,255,255,.92);
  --s-panel-a-86:   rgba(255,255,255,.90);
  --s-panel-a-92:   rgba(255,255,255,.94);
  --s-panel-a-60:   rgba(255,255,255,.70);
  --s-panel-b:      rgba(240,246,254,.92);
  --s-panel-b-86:   rgba(240,246,254,.90);
  --s-panel-b-95:   rgba(240,246,254,.96);
  --s-panel-c-95:   rgba(238,244,253,.96);
  --s-nav-70:       rgba(255,255,255,.80);
  --s-nav-66:       rgba(255,255,255,.78);
  --s-nav-86:       rgba(255,255,255,.90);
  --s-navbar:       rgba(255,255,255,.82);
  --s-input:        rgba(255,255,255,.92);
  --s-footer:       rgba(255,255,255,.88);
  --s-stage-veil:   rgba(255,255,255,.62);
  --s-node:         rgba(255,255,255,.98);
  --s-term-a:       rgba(255,255,255,.97);
  --s-term-b:       rgba(243,247,254,.97);
  --s-menu:         rgba(255,255,255,.97);
  --s-join-a:       rgba(255,255,255,.97);
  --s-chip-a:       rgba(255,255,255,.95);
  --s-chip-b:       rgba(244,248,255,.95);
  --s-owner-a:      rgba(255,246,224,.95);
  --s-owner-b:      rgba(255,240,206,.95);
  --s-admin-a:      rgba(232,247,253,.95);
  --s-admin-b:      rgba(224,241,251,.95);
  --tint-03:        rgba(21,58,116,.035);
  --tint-05:        rgba(21,58,116,.06);
  --tint-hover:     rgba(21,90,160,.08);
  --tint-section:   rgba(21,58,116,.08);
  --term-dot:       #c3ccdd;
  --strong:         #0b1526;
  --term-text:      #33475f;
  --term-muted:     #7d8ca4;
  --hero-sub:       #33475f;
  --shadow-deep:    rgba(23,50,90,.16);
  --toast-text:     #0b1526;
}

/* ---------- 浅色下需要单独处理的硬编码处 ---------- */
html[data-theme="light"] .bg-glow{
  background:
    radial-gradient(900px 520px at 12% -8%,  rgba(34,224,255,.24), transparent 62%),
    radial-gradient(760px 460px at 88% 4%,   rgba(139,92,246,.13), transparent 60%),
    radial-gradient(700px 500px at 50% 108%, rgba(59,130,246,.12), transparent 66%),
    linear-gradient(180deg, #f2f5fb 0%, #e7edfa 45%, #f2f5fb 100%);
}
html[data-theme="light"] .bg-grid{
  background-image:
    linear-gradient(rgba(21,58,116,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21,58,116,.07) 1px, transparent 1px);
}
html[data-theme="light"] .bg-scan{
  background:repeating-linear-gradient(180deg, rgba(21,58,116,.05) 0 1px, transparent 1px 3px);
  mix-blend-mode:normal;
  opacity:.55;
}
html[data-theme="light"] #net{ opacity:.5; }

html[data-theme="light"] .hero-title{
  background-image:linear-gradient(180deg, #0c1626 5%, #12457f 52%, #1a86bd 100%);
  filter:drop-shadow(0 6px 40px rgba(34,224,255,.45));
}
html[data-theme="light"] .step-no{ -webkit-text-stroke:1.4px rgba(10,126,164,.85); }
html[data-theme="light"] .join-card{ box-shadow:0 30px 70px -42px rgba(34,224,255,.45); }
html[data-theme="light"] .join-card-glow{ background:radial-gradient(closest-side, rgba(34,224,255,.16), transparent); }
html[data-theme="light"] .join-card-v{ text-shadow:0 0 24px rgba(34,224,255,.35); }
html[data-theme="light"] .players-grid::-webkit-scrollbar-thumb{ background:rgba(10,126,164,.35); }