/* ============================================================
   KissPro 官网全局样式 · 流光紫夜版
   深色玻璃质感 + 紫罗兰流光 + 细腻动效
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root{
  --bg-0:#080a12;
  --bg-1:#0e1220;
  --bg-2:#141a2c;
  --bg-3:#1a2136;
  --line:rgba(148,163,255,.14);
  --line-2:rgba(148,163,255,.26);
  --text-0:#eef1fa;
  --text-1:#a3adc6;
  --text-2:#5f6a86;

  --accent:#a06bff;            /* 紫罗兰主色 */
  --accent-2:#6f7bff;          /* 蓝紫副色 */
  --accent-3:#4cc9ff;          /* 冰蓝点缀 */
  --accent-soft:rgba(160,107,255,.16);
  --accent-glow:rgba(160,107,255,.45);
  --amber:#f0b35e;
  --danger:#e06c75;
  --success:#4ade80;

  --grad-main:linear-gradient(120deg,#a06bff 0%,#6f7bff 55%,#4cc9ff 110%);
  --grad-soft:linear-gradient(135deg,rgba(160,107,255,.18),rgba(111,123,255,.10) 55%,rgba(76,201,255,.08));

  --font-sans:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","Cascadia Code",Consolas,monospace;

  --nav-h:66px;
  --radius:14px;
  --radius-sm:9px;
  --content-w:1120px;
  --shadow:0 24px 60px rgba(2,4,12,.6);
  --shadow-sm:0 10px 28px rgba(2,4,12,.42);
  --ease:cubic-bezier(.22,.8,.24,1);
}

/* ---------- 基础 ---------- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg-0);
  color:var(--text-0);
  font-family:var(--font-sans);
  font-size:15.5px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
/* 流光氛围背景：星云光斑 + 细网格 */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(560px 420px at 12% -6%,rgba(160,107,255,.20),transparent 62%),
    radial-gradient(680px 480px at 88% 8%,rgba(111,123,255,.16),transparent 62%),
    radial-gradient(760px 560px at 50% 108%,rgba(76,201,255,.10),transparent 64%),
    var(--bg-0);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(148,163,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(148,163,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 78%);
}

a{color:var(--accent);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#c4a1ff}
img{max-width:100%;display:block}
::selection{background:rgba(160,107,255,.35);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#232c46;border-radius:8px;border:2px solid var(--bg-0)}
::-webkit-scrollbar-thumb:hover{background:#2f3a5c}
::-webkit-scrollbar-track{background:transparent}

.container{max-width:var(--content-w);margin:0 auto;padding:0 24px}
main{display:block}
.mono{font-family:var(--font-mono)}
.hl{background:var(--grad-main);-webkit-background-clip:text;background-clip:text;color:transparent}
.hl-blue{color:var(--accent-3)}

/* 滚动入场动效（JS 可选加 .reveal；无 JS 时保持可见） */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- Pro 金色标识 ---------- */
.pro-gold{
  background:linear-gradient(100deg,#ffe29a 0%,#f0b35e 45%,#d4882a 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  font-weight:800;
}
.nav-pro-badge{
  display:inline-flex;align-items:center;gap:4px;
  font-family:var(--font-mono);font-size:10.5px;font-weight:700;letter-spacing:.4px;
  padding:2px 8px;border-radius:99px;color:#3a2703;
  background:linear-gradient(120deg,#ffe29a,#f7b733 55%,#e8930c);
  box-shadow:0 0 12px rgba(240,179,94,.45);
}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:90;height:var(--nav-h);
  background:rgba(8,10,18,.72);
  backdrop-filter:blur(18px) saturate(1.5);
  -webkit-backdrop-filter:blur(18px) saturate(1.5);
  border-bottom:1px solid transparent;
  background-image:linear-gradient(rgba(8,10,18,.72),rgba(8,10,18,.72)),var(--grad-main);
  background-origin:border-box;
  background-clip:padding-box,border-box;
}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:17.5px;color:var(--text-0);letter-spacing:.3px}
.brand:hover{color:var(--text-0)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-family:var(--font-mono);font-weight:800;font-size:17px;color:#0d0618;
  background:var(--grad-main);
  box-shadow:0 0 18px rgba(160,107,255,.5),inset 0 1px 0 rgba(255,255,255,.35);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.brand:hover .brand-mark{transform:rotate(-8deg) scale(1.08);box-shadow:0 0 26px rgba(160,107,255,.75),inset 0 1px 0 rgba(255,255,255,.35)}
.brand-sub{color:var(--text-2);font-weight:500;font-size:13px}
.brand-mark img{width:100%;height:100%;border-radius:inherit;object-fit:cover;display:block}
.nav-links{display:flex;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;color:var(--text-1);font-size:14.5px;font-weight:500;
  padding:8px 14px;border-radius:9px;transition:color .2s,background .2s;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--grad-main);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.nav-links a:hover{color:var(--text-0);background:rgba(160,107,255,.08)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--text-0)}
.nav-auth{display:flex;align-items:center;gap:10px}
.nav-burger{display:none;background:none;border:1px solid var(--line);border-radius:9px;color:var(--text-1);padding:8px;cursor:pointer}

.user-chip{display:flex;align-items:center;gap:9px;padding:5px 12px 5px 5px;border:1px solid var(--line);border-radius:99px;background:rgba(20,26,44,.6);transition:border-color .2s}
.user-chip:hover{border-color:var(--line-2)}
.avatar,.avatar-img{width:30px;height:30px;border-radius:50%;object-fit:cover;display:grid;place-items:center;font-size:13px;font-weight:700;color:#0d0618;background:var(--grad-main)}

/* ---------- 按钮 ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 24px;border-radius:11px;border:1px solid transparent;cursor:pointer;
  font-family:var(--font-sans);font-size:14.5px;font-weight:600;letter-spacing:.3px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s,border-color .25s,color .2s;
  overflow:hidden;white-space:nowrap;
}
.btn::before{ /* 流光扫过 */
  content:"";position:absolute;top:0;left:-80%;width:55%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.22),transparent);
  transform:skewX(-22deg);transition:left .55s var(--ease);
}
.btn:hover::before{left:130%}
.btn:active{transform:translateY(1px) scale(.985)}
.btn-sm{padding:7px 16px;font-size:13px;border-radius:9px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed;pointer-events:none}

.btn-primary{
  color:#120826;background:var(--grad-main);background-size:160% 160%;
  box-shadow:0 6px 24px rgba(140,110,255,.38),inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 34px rgba(140,110,255,.55),inset 0 1px 0 rgba(255,255,255,.35);background-position:80% 50%;color:#120826}

.btn-ghost{
  color:var(--text-1);border-color:var(--line-2);
  background:rgba(20,26,44,.45);backdrop-filter:blur(8px);
}
.btn-ghost:hover{color:var(--text-0);border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 20px rgba(160,107,255,.18);transform:translateY(-2px)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;letter-spacing:.5px;
  padding:4px 11px;border-radius:99px;border:1px solid var(--line);color:var(--text-1);
  background:rgba(20,26,44,.5);
}
.badge-accent{color:#c9aaff;border-color:rgba(160,107,255,.45);background:var(--accent-soft);box-shadow:0 0 14px rgba(160,107,255,.15)}
.badge-blue{color:#9fd8ff;border-color:rgba(76,201,255,.4);background:rgba(76,201,255,.1)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:104px 0 84px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:1.2px;text-transform:uppercase;
  color:#c9aaff;padding:6px 15px;border-radius:99px;border:1px solid rgba(160,107,255,.4);
  background:var(--accent-soft);box-shadow:0 0 20px rgba(160,107,255,.14);
}
.hero-eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent-glow);animation:pulse 2.2s var(--ease) infinite}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.5);opacity:.55}}
.hero h1{
  margin:22px 0 16px;font-size:clamp(38px,5.4vw,60px);font-weight:800;line-height:1.14;letter-spacing:-1px;
  background:linear-gradient(115deg,#fff 15%,#cdb4ff 48%,#8fa2ff 75%,#4cc9ff 105%);
  background-size:220% auto;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:sheen 7s linear infinite;
}
@keyframes sheen{to{background-position:220% center}}
.hero-sub{color:var(--text-1);font-size:16.5px;max-width:520px;margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:13px;margin-bottom:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;color:var(--text-2);font-size:13px}

/* ---------- 终端面板 ---------- */
.terminal{
  position:relative;border-radius:16px;overflow:hidden;
  background:rgba(10,13,24,.85);border:1px solid var(--line);
  box-shadow:var(--shadow),0 0 60px rgba(120,100,255,.10);
  backdrop-filter:blur(10px);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.terminal:hover{transform:translateY(-4px);box-shadow:var(--shadow),0 0 90px rgba(140,110,255,.2)}
.terminal-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line);background:rgba(20,26,44,.6)}
.t-dot{width:11px;height:11px;border-radius:50%}
.t-dot:nth-child(1){background:#ff5f57;box-shadow:0 0 8px rgba(255,95,87,.6)}
.t-dot:nth-child(2){background:#febc2e;box-shadow:0 0 8px rgba(254,188,46,.6)}
.t-dot:nth-child(3){background:#28c840;box-shadow:0 0 8px rgba(40,200,64,.6)}
.terminal-title{margin-left:auto;font-family:var(--font-mono);font-size:11.5px;color:var(--text-2);letter-spacing:.5px}
.terminal-body{padding:20px 22px;font-family:var(--font-mono);font-size:13px;line-height:2}
.term-line{display:flex;gap:14px;white-space:pre-wrap}
.term-line .n{color:var(--text-2);user-select:none;min-width:20px;text-align:right}
.term-ok{color:#c9aaff}
.term-info{color:var(--amber)}
.term-dim{color:var(--text-2)}
.term-prompt{color:var(--accent-3)}
.term-cursor{display:inline-block;width:8px;height:15px;background:var(--accent);vertical-align:-2px;box-shadow:0 0 8px var(--accent-glow);animation:blink 1.05s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ---------- 区块通用 ---------- */
.section{padding:76px 0}
.section-alt{background:linear-gradient(180deg,transparent,rgba(14,18,32,.65) 18%,rgba(14,18,32,.65) 82%,transparent);border-block:1px solid var(--line)}
.section-head{max-width:640px;margin-bottom:44px}
.section-head .kicker{font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:1.6px;text-transform:uppercase;color:#c9aaff;margin-bottom:10px;display:block}
.section-head h2{font-size:clamp(26px,3.2vw,34px);font-weight:800;letter-spacing:-.5px;line-height:1.25}
.section-head p{color:var(--text-1);margin-top:12px}

/* ---------- 特性卡片 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  position:relative;padding:30px 26px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(24,30,52,.75),rgba(13,17,30,.85));
  border:1px solid var(--line);
  transition:transform .35s var(--ease),border-color .3s,box-shadow .35s var(--ease);
  overflow:hidden;
}
.card::before{ /* 顶部流光描边 */
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:var(--grad-main);opacity:0;transition:opacity .35s;
}
.card:hover{transform:translateY(-7px);border-color:rgba(160,107,255,.4);box-shadow:0 22px 48px rgba(2,4,12,.55),0 0 40px rgba(140,110,255,.12)}
.card:hover::before{opacity:1}
.card-icon{
  width:48px;height:48px;border-radius:13px;display:grid;place-items:center;margin-bottom:18px;
  color:#cdb4ff;background:var(--accent-soft);border:1px solid rgba(160,107,255,.3);
  box-shadow:0 0 18px rgba(160,107,255,.12);
  transition:transform .35s var(--ease),box-shadow .35s;
}
.card:hover .card-icon{transform:scale(1.08) rotate(-4deg);box-shadow:0 0 26px rgba(160,107,255,.3)}
.card-icon svg{width:22px;height:22px}
.card h3{font-size:17.5px;font-weight:700;margin-bottom:9px}
.card p{color:var(--text-1);font-size:14px}

/* ---------- 架构三步 ---------- */
.arch{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:18px;align-items:stretch}
.arch-step{
  padding:26px 24px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(24,30,52,.7),rgba(13,17,30,.85));
  border:1px solid var(--line);transition:border-color .3s,transform .35s var(--ease);
}
.arch-step:hover{border-color:rgba(160,107,255,.4);transform:translateY(-4px)}
.arch-step .step-no{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;margin-bottom:14px;
  font-family:var(--font-mono);font-weight:800;font-size:15px;color:#120826;
  background:var(--grad-main);box-shadow:0 0 16px rgba(140,110,255,.4);
}
.arch-step .tier{display:inline-block;font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:1px;color:var(--amber);border:1px solid rgba(240,179,94,.4);background:rgba(240,179,94,.1);padding:2px 9px;border-radius:99px;margin-left:10px;vertical-align:2px}
.arch-step .name{font-size:16.5px;font-weight:700;margin-bottom:10px}
.arch-step ul{list-style:none}
.arch-step ul li{position:relative;color:var(--text-1);font-size:13.5px;padding-left:18px;margin-bottom:6px}
.arch-step ul li::before{content:"▸";position:absolute;left:0;color:var(--accent)}
.arch-arrow{align-self:center;color:var(--accent);opacity:.75;font-size:22px;animation:nudge 2.4s var(--ease) infinite}
@keyframes nudge{0%,100%{transform:translateX(0);opacity:.45}50%{transform:translateX(6px);opacity:1}}

/* ---------- 模块网格 ---------- */
.mod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.mod-card{
  padding:22px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(24,30,52,.7),rgba(13,17,30,.85));
  border:1px solid var(--line);transition:transform .35s var(--ease),border-color .3s,box-shadow .35s;
}
.mod-card:hover{transform:translateY(-5px);border-color:rgba(160,107,255,.4);box-shadow:0 16px 36px rgba(2,4,12,.5)}
.mod-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.mod-icon{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;color:#cdb4ff;background:var(--accent-soft);border:1px solid rgba(160,107,255,.3);font-family:var(--font-mono);font-weight:700}
.mod-icon svg{width:18px;height:18px}
.mod-head h3{font-size:15.5px;font-weight:700}
.mod-card p{color:var(--text-1);font-size:13.5px;margin-bottom:14px}
.mod-tags{display:flex;flex-wrap:wrap;gap:7px}
.mod-tags span{font-family:var(--font-mono);font-size:11.5px;color:var(--text-1);padding:3px 9px;border-radius:7px;border:1px solid var(--line);background:rgba(20,26,44,.55)}

/* ---------- 技术栈 ---------- */
.stack-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stack-item{
  display:flex;flex-direction:column;align-items:center;gap:9px;text-align:center;
  padding:24px 14px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(24,30,52,.7),rgba(13,17,30,.85));
  border:1px solid var(--line);transition:transform .35s var(--ease),border-color .3s;
}
.stack-item:hover{transform:translateY(-4px);border-color:rgba(160,107,255,.4)}
.stack-item .s-ico{width:42px;height:42px;display:grid;place-items:center;color:#cdb4ff}
.stack-item .s-ico svg,.stack-item .s-ico img{width:30px;height:30px}
.stack-item .s-name{font-weight:700;font-size:14px}
.stack-item .s-desc{color:var(--text-2);font-size:12.5px}

/* ---------- CTA ---------- */
.cta{
  position:relative;text-align:center;padding:64px 32px;border-radius:20px;overflow:hidden;
  background:
    radial-gradient(420px 220px at 20% 0%,rgba(160,107,255,.28),transparent 65%),
    radial-gradient(420px 220px at 85% 100%,rgba(76,201,255,.18),transparent 65%),
    linear-gradient(160deg,rgba(26,32,58,.9),rgba(12,15,28,.95));
  border:1px solid rgba(160,107,255,.35);
  box-shadow:var(--shadow),0 0 70px rgba(140,110,255,.14);
}
.cta h2{font-size:clamp(24px,3vw,32px);font-weight:800;margin-bottom:12px}
.cta p{color:var(--text-1);max-width:520px;margin:0 auto 26px}
.cta-note{display:block;margin-top:16px;font-family:var(--font-mono);font-size:12px;color:var(--text-2);letter-spacing:.5px}

/* ---------- 页脚 ---------- */
.footer{margin-top:80px;border-top:1px solid var(--line);background:rgba(10,13,24,.7);backdrop-filter:blur(10px)}
.footer-grid{display:flex;justify-content:space-between;gap:40px;padding:48px 0 32px}
.footer-brand .brand{font-size:16px}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--text-2);margin-bottom:14px}
.footer-col a{display:block;color:var(--text-1);font-size:14px;margin-bottom:9px;transition:color .2s,transform .2s var(--ease)}
.footer-col a:hover{color:#c9aaff;transform:translateX(3px)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:18px 0;border-top:1px solid var(--line);color:var(--text-2);font-size:12.5px}

/* ---------- 子页 hero ---------- */
.page-hero{position:relative;padding:72px 0 52px;overflow:hidden}
.page-hero h1{font-size:clamp(30px,4vw,44px);font-weight:800;letter-spacing:-.8px;margin:14px 0 12px;background:linear-gradient(115deg,#fff 20%,#cdb4ff 60%,#8fa2ff 95%);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p{color:var(--text-1);max-width:560px}

/* ---------- 下载页 ---------- */
.dl-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:26px;align-items:start}
.dl-card{
  padding:30px 28px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(24,30,52,.78),rgba(13,17,30,.88));
  border:1px solid var(--line);box-shadow:var(--shadow-sm);margin-bottom:22px;
}
.dl-card h2{display:flex;align-items:center;gap:12px;font-size:19px;font-weight:800;margin-bottom:18px}
.version-pill{display:inline-flex;align-items:center;gap:9px;font-family:var(--font-mono);font-size:12px;padding:5px 13px;border-radius:99px;border:1px solid rgba(160,107,255,.4);background:var(--accent-soft)}
.version-pill .v{color:#c9aaff;font-weight:700}
.version-pill .st{color:var(--amber);font-weight:600}
.dl-req{list-style:none;margin:4px 0 14px}
.dl-req li{display:flex;align-items:flex-start;gap:10px;padding:7px 0;border-bottom:1px dashed var(--line);font-size:13px;color:var(--text-1)}
.dl-req li svg{width:16px;height:16px;flex-shrink:0;margin-top:2px;color:var(--accent,#a06bff)}
.dl-req li:last-child{border-bottom:none}
.dl-req li b{color:var(--text-0);font-weight:600}
.steps{list-style:none;counter-reset:step;margin-top:8px}
.steps li{position:relative;counter-increment:step;padding:0 0 22px 52px;color:var(--text-1);font-size:14px}
.steps li::before{
  content:counter(step);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;font-family:var(--font-mono);font-weight:700;font-size:13.5px;color:#c9aaff;
  background:var(--accent-soft);border:1px solid rgba(160,107,255,.45);box-shadow:0 0 12px rgba(160,107,255,.15);
}
.steps li::after{content:"";position:absolute;left:15.5px;top:36px;bottom:2px;width:1px;background:linear-gradient(180deg,rgba(160,107,255,.4),transparent)}
.steps li:last-child::after{display:none}
.steps li b{color:var(--text-0)}
.changelog{margin-top:6px}
.changelog .item{padding:13px 0;border-bottom:1px dashed var(--line);font-size:13.5px;color:var(--text-1)}
.changelog .item:last-child{border-bottom:none}
.changelog .ver{color:#c9aaff;font-family:var(--font-mono);font-weight:700;margin-right:10px}
.changelog .date{color:var(--text-2);font-family:var(--font-mono);font-size:12px;margin-left:8px}

/* ---------- 认证页 ---------- */
.auth-wrap{min-height:calc(100vh - var(--nav-h));display:grid;place-items:center;padding:56px 20px}
.auth-card{
  position:relative;width:100%;max-width:420px;padding:40px 36px;border-radius:18px;
  background:linear-gradient(165deg,rgba(26,32,58,.85),rgba(12,15,28,.92));
  border:1px solid var(--line);box-shadow:var(--shadow),0 0 70px rgba(140,110,255,.12);
  backdrop-filter:blur(14px);overflow:hidden;
}
.auth-card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-main);opacity:.8}
.auth-card h1{font-size:24px;font-weight:800;letter-spacing:-.4px;margin-bottom:6px}
.auth-card .sub{color:var(--text-1);font-size:13.5px;margin-bottom:26px}
.field{margin-bottom:17px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-1);margin-bottom:7px}
.field input{
  width:100%;padding:11px 14px;border-radius:var(--radius-sm);font-family:var(--font-sans);font-size:14px;
  color:var(--text-0);background:rgba(10,13,24,.7);border:1px solid var(--line);
  transition:border-color .25s,box-shadow .25s;
}
.field input::placeholder{color:var(--text-2)}
.field input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft),0 0 20px rgba(160,107,255,.12)}
.field .field-error{display:none;color:var(--danger);font-size:12px;margin-top:6px}
.field.has-error input{border-color:var(--danger)}
.field.has-error .field-error{display:block}
.auth-switch{margin-top:20px;text-align:center;font-size:13.5px;color:var(--text-1)}
.auth-alert{display:none;padding:11px 15px;border-radius:var(--radius-sm);font-size:13.5px;margin-bottom:18px;border:1px solid}
.auth-alert.show{display:block}
.auth-alert.success{color:#9ff0c0;border-color:rgba(74,222,128,.4);background:rgba(74,222,128,.1)}
.auth-alert.error{color:#ffb3ba;border-color:rgba(224,108,117,.45);background:rgba(224,108,117,.1)}

/* ---------- Toast ---------- */
.toast-wrap{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);z-index:100;display:flex;flex-direction:column;gap:10px;align-items:center;pointer-events:none}
.toast{
  padding:11px 22px;border-radius:99px;font-size:13.5px;font-weight:600;color:var(--text-0);
  background:rgba(20,26,44,.92);border:1px solid var(--line-2);box-shadow:var(--shadow-sm);
  backdrop-filter:blur(12px);animation:toast-in .35s var(--ease);
}
.toast.success{border-color:rgba(74,222,128,.5);box-shadow:0 0 20px rgba(74,222,128,.18)}
.toast.error{border-color:rgba(224,108,117,.5);box-shadow:0 0 20px rgba(224,108,117,.18)}
@keyframes toast-in{from{opacity:0;transform:translateY(14px) scale(.96)}to{opacity:1;transform:none}}

/* ---------- 占位约定 ---------- */
.placeholder-tag{
  display:inline-block;font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.6px;
  color:var(--amber);border:1px dashed rgba(240,179,94,.55);background:rgba(240,179,94,.08);
  padding:2px 9px;border-radius:7px;
}
.ph{color:var(--amber);outline:1px dashed rgba(240,179,94,.55);outline-offset:3px;border-radius:3px;padding:0 2px}

/* ---------- 个人中心 / 账户设置 ---------- */
.account-wrap{display:grid;grid-template-columns:320px 1fr;gap:26px;align-items:start;padding:44px 0 70px}
.account-side{position:sticky;top:calc(var(--nav-h) + 20px)}
.account-card,
.profile-card{
  padding:28px 24px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(24,30,52,.78),rgba(13,17,30,.88));
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.profile-card{text-align:center}
.profile-avatar{
  width:104px;height:104px;border-radius:50%;margin:0 auto 16px;object-fit:cover;
  display:grid;place-items:center;font-size:34px;font-weight:800;color:#120826;
  background:var(--grad-main);border:3px solid rgba(160,107,255,.45);
  box-shadow:0 0 30px rgba(160,107,255,.3);
}
.avatar-edit{position:relative;width:88px;height:88px;margin:0 auto 14px;cursor:pointer}
.avatar-preview{
  width:88px;height:88px;border-radius:50%;object-fit:cover;
  display:grid;place-items:center;font-size:26px;font-weight:800;color:var(--text-1);
  background:rgba(10,13,24,.7);border:2px dashed var(--line-2);
  transition:border-color .25s,box-shadow .25s;
}
.avatar-edit:hover .avatar-preview{border-color:var(--accent);box-shadow:0 0 18px rgba(160,107,255,.2)}
.member-tag{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:700;padding:3px 12px;border-radius:99px;letter-spacing:.4px}
.member-tag.pro{color:#1a0e00;background:linear-gradient(120deg,#ffd66b,#f0a500);box-shadow:0 0 16px rgba(240,166,0,.4)}
.member-tag.normal{color:var(--text-1);background:rgba(20,26,44,.7);border:1px solid var(--line)}
.form-row{margin-bottom:17px}
.form-row label{display:block;font-size:13px;font-weight:600;color:var(--text-1);margin-bottom:7px}
.form-row input{
  width:100%;padding:11px 14px;border-radius:var(--radius-sm);font-size:14px;color:var(--text-0);
  background:rgba(10,13,24,.7);border:1px solid var(--line);transition:border-color .25s,box-shadow .25s;
}
.form-row input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft),0 0 20px rgba(160,107,255,.12)}
.form-row.has-error input{border-color:var(--danger)}
.form-row .field-error{display:none;color:var(--danger);font-size:12px;margin-top:6px}
.form-row.has-error .field-error{display:block}
.member-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 24px;border-radius:var(--radius);margin-top:22px;
  background:linear-gradient(120deg,rgba(255,214,107,.1),rgba(240,166,0,.05)),linear-gradient(160deg,rgba(24,30,52,.8),rgba(13,17,30,.9));
  border:1px solid rgba(240,179,94,.35);
}
.member-feature{display:inline-block;font-family:var(--font-mono);font-size:11.5px;color:var(--amber);border:1px dashed rgba(240,179,94,.5);background:rgba(240,179,94,.08);padding:2px 9px;border-radius:7px;margin:3px 4px 0 0}

/* ---------- 响应式 ---------- */
@media (max-width:920px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .feature-grid,.mod-grid{grid-template-columns:1fr 1fr}
  .stack-grid{grid-template-columns:1fr 1fr}
  .arch{grid-template-columns:1fr}
  .arch-arrow{transform:rotate(90deg);justify-self:center;animation:none}
  .dl-layout{grid-template-columns:1fr}
}
@media (max-width:860px){
  .account-wrap{grid-template-columns:1fr}
  .account-side{position:static}
}
@media (max-width:720px){
  .hero{padding:70px 0 60px}
  .feature-grid,.mod-grid,.stack-grid{grid-template-columns:1fr}
  .nav-burger{display:grid;place-items:center;margin-left:auto}
  .nav-links{
    display:none;position:absolute;top:var(--nav-h);left:0;right:0;margin:0;
    flex-direction:column;gap:2px;padding:14px 20px 18px;
    background:rgba(8,10,18,.96);backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 14px}
  .nav-auth{margin-left:0}
  .footer-grid{flex-direction:column;gap:26px}
  .footer-bottom{flex-direction:column;gap:6px}
}

/* ---------- 个人中心：两列网格与紧凑优化 ---------- */
.account-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start}
.account-grid .account-card{margin-bottom:0;height:100%;display:flex;flex-direction:column}
.account-grid .account-card form{margin-top:auto}
.account-grid .span-2{grid-column:1 / -1}
.account-card h3{font-size:16.5px;font-weight:800;letter-spacing:.2px;display:flex;align-items:center;gap:9px}
.account-card h3::before{content:"";width:4px;height:16px;border-radius:3px;background:var(--grad-main);box-shadow:0 0 10px var(--accent-glow)}
.account-card .desc{color:var(--text-2);font-size:13px;margin:8px 0 18px}
.profile-card h2{font-size:20px;font-weight:800;letter-spacing:.2px}
.profile-card .email{color:var(--text-2);font-size:13px;margin-top:5px;word-break:break-all}
.profile-meta{display:flex;gap:10px;margin-top:18px}
.profile-meta .kv{flex:1;text-align:center;padding:10px 8px;border-radius:10px;background:rgba(10,13,24,.55);border:1px solid var(--line);font-size:12px;color:var(--text-2)}
.profile-meta .kv b{display:block;margin-top:3px;font-family:var(--font-mono);font-size:13px;color:var(--text-0);font-weight:700}
.avatar-edit{width:auto;margin:0;display:flex;align-items:center;gap:20px;cursor:default}
.avatar-actions{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.member-row{margin-top:0;height:100%}
@media (max-width:860px){
  .account-grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  .avatar-edit{flex-direction:column;align-items:center;text-align:center}
  .avatar-actions{align-items:center}
}

/* ---------- 首页：技术实力 2x2 网格 ---------- */
.grid-2x2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media (max-width:720px){.grid-2x2{grid-template-columns:1fr}}

/* ---------- 无障碍动效适配 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}