/* ==========================================================================
   启元机器人开发者社区 · 全局主题 v2「高级科技版」
   零依赖 · 浅色单主题 · 移动端优先
   设计取向：克制辉光 + 中性细描边 + 大留白 + 负字距，不是更炫
   ========================================================================== */

:root{
  --brand:#2f6bff;
  --brand-d:#1d4fd6;
  --brand-l:rgba(47,107,255,.08);
  --teal:#0fae97;
  --teal-l:rgba(15,174,151,.1);
  --amber:#d97706;

  --bg:#ffffff;
  --bg2:#f6f8fc;
  --bg3:#eef2f8;
  --card:#ffffff;
  --card-2:#f8fafd;
  --ink:#0b1220;
  --ink2:#4a586e;
  --ink3:#93a0b5;
  --line:rgba(11,18,32,.09);
  --line2:rgba(11,18,32,.16);

  --glow:0 0 0 1px rgba(47,107,255,.12), 0 20px 50px -22px rgba(47,107,255,.3);
  --glow-teal:0 0 0 1px rgba(15,174,151,.14), 0 20px 50px -22px rgba(15,174,151,.28);
  --shadow-sm:0 1px 2px rgba(15,23,42,.06);
  --shadow:0 16px 44px -18px rgba(15,23,42,.2);
  --shadow-lg:0 30px 70px -24px rgba(47,107,255,.3);
  --img-overlay:linear-gradient(180deg,rgba(255,255,255,0) 55%,rgba(255,255,255,.35) 100%);
  color-scheme:light;

  --radius:18px;
  --radius-sm:12px;
  --maxw:1280px;
  --nav-h:66px;
}

/* ==== 基础重置 ==== */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:auto;background:#ffffff;color-scheme:light}
body{
  background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
  font-size:15px;line-height:1.7;letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
@media(max-width:1000px){
  html,body{
    touch-action:manipulation;
    overscroll-behavior:none;
    -webkit-text-size-adjust:100%;
  }
  input,textarea,select,[contenteditable="true"],.rte,.rte-wrap{
    touch-action:auto;
  }
}
a{color:var(--brand);text-decoration:none;transition:color .18s}
a:hover{color:var(--brand-d)}
img{max-width:100%;display:block}
::selection{background:var(--brand);color:#fff}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.muted{color:var(--ink2)}
.center{text-align:center}
.mono{font-family:"SF Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}

/* ==== 背景装饰：细网格 + 弥散光（克制） ==== */
.bg-fx{position:fixed;inset:0;z-index:-2;pointer-events:none;overflow:hidden}
.bg-fx .grid-lines{position:absolute;inset:-2px;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;opacity:.5;
  mask-image:radial-gradient(1200px 700px at 50% -5%,#000 0%,transparent 75%);
  -webkit-mask-image:radial-gradient(1200px 700px at 50% -5%,#000 0%,transparent 75%);}
.bg-fx .glow-a{position:absolute;top:-260px;right:-160px;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,107,255,.12),transparent 65%);filter:blur(20px)}
.bg-fx .glow-b{position:absolute;top:200px;left:-220px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,174,151,.1),transparent 65%);filter:blur(20px)}
#fxCanvas{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.28}

/* ==== 顶部导航 ==== */
.nav{position:sticky;top:0;z-index:100;height:var(--nav-h);
  background:color-mix(in srgb,var(--bg) 72%,transparent);
  backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid var(--line);}
.nav-in{max-width:var(--maxw);margin:0 auto;height:100%;padding:0 24px;display:flex;align-items:center;gap:16px;flex-wrap:nowrap}
.logo{display:flex;align-items:center;flex-shrink:0;white-space:nowrap}
.logo:hover{opacity:.88}
.logo-lockup{display:flex;flex-direction:column;align-items:flex-start;gap:4px}
.logo-wordmark{height:16px;width:auto;display:block;object-fit:contain;filter:invert(1)}
.logo-sub{font-size:16.5px;font-weight:800;letter-spacing:.06em;line-height:1;
  background:linear-gradient(90deg,var(--brand),var(--teal));-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent}
.logo-en{display:none}
.logo .mark{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;color:#fff;font-weight:900;font-size:16px;
  background:linear-gradient(135deg,var(--brand),var(--teal));box-shadow:0 6px 18px -6px var(--brand);position:relative;overflow:hidden}
.logo .mark::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 40%,rgba(255,255,255,.5) 50%,transparent 60%);
  transform:translateX(-120%);animation:sheen 5s ease-in-out infinite}
@keyframes sheen{0%,70%{transform:translateX(-120%)}85%,100%{transform:translateX(220%)}}
.logo small{font-weight:600;font-size:10.5px;color:var(--ink3);letter-spacing:.2em}
.nav-menu{display:flex;align-items:center;gap:0;margin-left:2px;flex-wrap:nowrap}
.nav-menu a{color:var(--ink2);font-size:13.5px;font-weight:600;padding:7px 9px;border-radius:9px;transition:.18s;letter-spacing:0;white-space:nowrap}
.nav-menu a:hover{color:var(--ink);background:var(--card)}
.nav-menu a.active{color:var(--brand);background:var(--brand-l)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{width:38px;height:38px;border-radius:10px;border:1px solid var(--line2);background:var(--card);
  display:grid;place-items:center;cursor:pointer;color:var(--ink2);font-size:16px;transition:.18s}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--glow)}
.nav-toggle{display:none}
/* ==== 模型广场 mega 下拉导航 ==== */
.nav-item{position:relative;display:flex;align-items:center;flex-shrink:0}
.nav-item>a .caret{font-size:9px;opacity:.55;margin-left:4px}
.mega{position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(8px);width:min(600px,92vw);
  background:color-mix(in srgb,var(--bg) 97%,transparent);backdrop-filter:saturate(180%) blur(16px);
  border:1px solid var(--line2);border-radius:18px;box-shadow:var(--shadow-lg);padding:16px;
  opacity:0;visibility:hidden;transition:opacity .2s,transform .22s,visibility .2s;z-index:200}
.mega::before{content:"";position:absolute;top:-16px;left:0;right:0;height:16px}
.nav-item:hover .mega,.nav-item:focus-within .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega.sm{width:min(320px,92vw)}
.mega.sm .mega-grid{grid-template-columns:1fr}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px}
.mega .mega-link{display:flex;gap:12px;align-items:center;padding:12px 13px;border-radius:12px;color:var(--ink);background:none;font-weight:400}
.mega .mega-link:hover{background:var(--bg2);color:var(--ink)}
.mega .mega-link .mi-ic{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:var(--brand-l);color:var(--brand);flex-shrink:0;font-size:17px;border:1px solid color-mix(in srgb,var(--brand) 20%,transparent)}
.mega .mega-link .mi-ic.teal{background:var(--teal-l);color:var(--teal);border-color:color-mix(in srgb,var(--teal) 20%,transparent)}
.mega .mega-link b{font-size:13.5px;font-weight:700;display:block;letter-spacing:-.01em;line-height:1.3}
.mega .mega-link small{font-size:11.5px;color:var(--ink3)}
.mega-foot{display:flex;gap:18px;margin-top:10px;padding:13px 13px 3px;border-top:1px solid var(--line)}
.mega-foot a{font-size:12.5px;font-weight:700;color:var(--brand)}
.nav-login{display:none}
.nav-user{position:relative}
.nav-user-btn{display:grid;place-items:center;width:36px;height:36px;padding:0;border:0;background:transparent;cursor:pointer;border-radius:50%}
.letter-av{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;font-size:14px;line-height:1;user-select:none}
.nav-user-menu{position:absolute;right:0;top:calc(100% + 10px);min-width:200px;background:var(--card);border:1px solid var(--line2);border-radius:14px;box-shadow:var(--shadow);padding:8px;
  opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .18s,transform .18s,visibility .18s;z-index:220}
.nav-user.is-open .nav-user-menu{opacity:1;visibility:visible;transform:none}
.nav-user-name{padding:10px 12px 8px;font-weight:800;font-size:13.5px;color:var(--ink);word-break:break-all;line-height:1.4}
.nav-user-menu a,.nav-user-menu button{display:block;width:100%;text-align:left;padding:9px 12px;border:0;background:none;border-radius:9px;font:inherit;font-size:13.5px;font-weight:700;cursor:pointer;color:var(--ink2)}
.nav-user-menu a:hover,.nav-user-menu button:hover{background:var(--bg2);color:var(--ink)}
.nav::after{content:"";position:fixed;left:0;right:0;top:calc(var(--nav-h) + env(safe-area-inset-top,0px));bottom:0;
  background:rgba(11,18,32,.28);opacity:0;pointer-events:none;transition:opacity .2s;z-index:90}
body:has(#navMenu.open),body.nav-menu-open{overflow:hidden}
body:has(#navMenu.open) .nav::after,body.nav-menu-open .nav::after{opacity:1;pointer-events:auto}
/* 中等宽度即收起为汉堡菜单，避免导航挤成两行 */
@media(max-width:1000px){
  .nav{height:calc(var(--nav-h) + env(safe-area-inset-top,0px));padding-top:env(safe-area-inset-top,0px)}
  .nav-item>a{display:none}
  .nav-right{position:relative;z-index:96}
  .nav-menu{position:fixed;inset:calc(var(--nav-h) + env(safe-area-inset-top,0px)) 0 auto 0;flex-direction:column;align-items:stretch;gap:2px;
    background:var(--bg);border-bottom:1px solid var(--line);padding:12px 16px max(20px,env(safe-area-inset-bottom,0px));
    max-height:calc(100dvh - var(--nav-h) - env(safe-area-inset-top,0px));overflow:auto;z-index:95;
    transform:translateY(-120%);transition:transform .28s cubic-bezier(.2,.7,.2,1),visibility .28s;box-shadow:var(--shadow);
    visibility:hidden;pointer-events:none}
  .nav-menu.open{transform:none;visibility:visible;pointer-events:auto}
  .nav-toggle{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
  .nav-menu a{padding:12px 14px;font-size:15px;border-radius:10px}
  .nav-item{display:block;width:100%}
  .nav-toggle{display:grid}
  .nav-login{display:block;margin-top:8px;text-align:center;font-weight:800;color:var(--brand)!important;background:var(--brand-l)}
  .nav-login.nav-login-user{display:flex;gap:8px;margin-top:8px;padding:8px 0 0;border-top:1px solid var(--line);text-align:left;font-weight:inherit;color:inherit!important;background:transparent}
  .nav-login-user .nav-user-name{display:none}
  .nav-user-menu a[href^="/admin"]{display:none}
  .nav-login-user a,.nav-login-user button{flex:1;display:block;width:auto;margin:0;padding:12px 14px;border:0;border-radius:10px;background:var(--bg2);color:var(--ink2);font:inherit;font-size:15px;font-weight:600;cursor:pointer;text-align:center;touch-action:manipulation;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}
  .nav-login-user a:hover,.nav-login-user button:hover{color:var(--ink);background:var(--bg3)}
  .mega,.mega.sm{display:block;position:static;left:auto;top:auto;transform:none!important;opacity:1;visibility:visible;
    width:100%;max-width:none;box-shadow:none;border:0;padding:0;background:transparent;backdrop-filter:none}
  .mega::before{display:none}
  .mega-grid{display:block;width:100%;gap:0}
  .mega .mega-link{display:block;width:100%;box-sizing:border-box;padding:12px 14px;font-size:15px;font-weight:600;gap:0;color:var(--ink2)}
  .mega .mega-link:hover{color:var(--ink);background:var(--card)}
  .mega .mega-link.active{color:var(--brand);background:var(--brand-l)}
  .mega .mega-link .mi-ic{display:none}
  .mega .mega-link b{font-size:inherit;font-weight:inherit;letter-spacing:inherit;line-height:inherit}
  .mega .mega-link small{display:none}
}

/* ==== 按钮 ==== */
button.btn,a.btn{-webkit-appearance:none;appearance:none;text-decoration:none;font-family:inherit}
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;
  padding:11px 20px;border-radius:12px;font-weight:700;font-size:14px;cursor:pointer;letter-spacing:.01em;
  border:1px solid transparent;transition:transform .12s ease,box-shadow .25s,background .2s,border-color .2s;
  will-change:transform;white-space:nowrap;line-height:1.25}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-primary{background-color:var(--brand);background-image:linear-gradient(120deg,var(--brand),var(--teal));color:#fff;box-shadow:0 10px 30px -10px var(--brand)}
.btn-primary:hover{color:#fff;box-shadow:0 16px 40px -12px var(--brand),var(--glow)}
.btn-ghost{background:var(--card);color:var(--ink);border-color:var(--line2)}
@media (hover:hover) and (pointer:fine){
  .btn-ghost{background:color-mix(in srgb,var(--card) 60%,transparent);backdrop-filter:blur(8px)}
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-teal{background:var(--teal);color:#04201c}
.btn-teal:hover{filter:brightness(1.08);color:#04201c;box-shadow:var(--glow-teal)}
.btn-lg{padding:14px 28px;font-size:15px;border-radius:14px}
.btn-sm{padding:7px 13px;font-size:13px;border-radius:10px}

/* ==== 区块 ==== */
section{padding:88px 0;position:relative}
.sec-head{max-width:740px;margin:0 auto 48px;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-size:11.5px;font-weight:700;
  letter-spacing:.22em;text-transform:uppercase;margin-bottom:14px;
  font-family:"SF Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.eyebrow.center-line::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,transparent,var(--teal))}
.eyebrow.center-line::after{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--teal),transparent)}

/* ==== 大胆版式：规格书 / HUD 风格区头 ==== */
.shead{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.shead .l{display:flex;align-items:center;gap:22px;min-width:0}
.shead .idx{font-size:clamp(52px,8vw,96px);font-weight:800;line-height:.78;color:transparent;
  -webkit-text-stroke:1.5px var(--line2);letter-spacing:-.05em;font-variant-numeric:tabular-nums;flex-shrink:0}
.shead h2{margin:0}
.shead .sub{margin-top:8px;color:var(--ink2);font-size:15px;max-width:60ch}

/* ==== HUD 角标框（用于关键媒体/画面） ==== */
.hud{position:relative}
.hud::before,.hud::after{content:"";position:absolute;width:26px;height:26px;z-index:6;pointer-events:none;
  border:2px solid var(--teal);opacity:.9;filter:drop-shadow(0 0 6px color-mix(in srgb,var(--teal) 60%,transparent))}
.hud::before{top:12px;left:12px;border-right:0;border-bottom:0}
.hud::after{bottom:12px;right:12px;border-left:0;border-top:0}

/* ==== 卡片 HUD 悬停态（模型 / 项目卡） ==== */
.m-card,.repo{position:relative}
.m-card::before,.m-card::after,.repo::before,.repo::after{content:"";position:absolute;width:15px;height:15px;
  border:2px solid var(--teal);opacity:0;transform:scale(.6);transition:opacity .25s,transform .25s;pointer-events:none;z-index:4;
  filter:drop-shadow(0 0 5px color-mix(in srgb,var(--teal) 60%,transparent))}
.m-card::before,.repo::before{top:11px;left:11px;border-right:0;border-bottom:0}
.m-card::after,.repo::after{bottom:11px;right:11px;border-left:0;border-top:0}
.m-card:hover::before,.m-card:hover::after,.repo:hover::before,.repo:hover::after{opacity:.9;transform:none}
.m-card:hover,.repo:hover{border-color:color-mix(in srgb,var(--teal) 45%,var(--line2));box-shadow:var(--shadow),var(--glow-teal)}
.m-card:hover .av{box-shadow:0 0 0 2px color-mix(in srgb,var(--teal) 40%,transparent),0 6px 18px -6px var(--teal)}

/* ==== 等宽技术标注 ==== */
.mono-label{font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;font-size:11px;letter-spacing:.12em;
  color:var(--ink3);text-transform:uppercase;display:inline-flex;align-items:center;gap:7px}
.mono-label .d{width:6px;height:6px;border-radius:50%;background:var(--teal);box-shadow:0 0 8px var(--teal)}

/* ==== 动态信息流 ticker ==== */
.ticker{border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:color-mix(in srgb,var(--bg2) 60%,transparent)}
.ticker-row{display:flex;align-items:center}
.ticker-head{display:inline-flex;align-items:center;gap:8px;padding:14px 18px;font-family:"SF Mono",ui-monospace,Menlo,monospace;
  font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--teal);white-space:nowrap;flex-shrink:0;
  border-right:1px solid var(--line);background:var(--bg2)}
.ticker-head .live{width:7px;height:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 0 var(--teal);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--teal) 70%,transparent)}70%{box-shadow:0 0 0 7px transparent}100%{box-shadow:0 0 0 0 transparent}}
.ticker-vp{overflow:hidden;flex:1;padding:12px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent)}
.ticker-track{display:flex;gap:36px;width:max-content;animation:scrollx 40s linear infinite}
.ticker:hover .ticker-track{animation-play-state:paused}
.ti{display:flex;align-items:center;gap:9px;white-space:nowrap;font-size:13.5px;color:var(--ink2);font-weight:600}
.ti:hover{color:var(--ink)}
.ti b{color:var(--ink);font-weight:700}
.ti:hover b{color:var(--brand)}
.ti .k{font-family:"SF Mono",ui-monospace,Menlo,monospace;font-size:11px;color:var(--teal);
  border:1px solid color-mix(in srgb,var(--teal) 30%,transparent);border-radius:6px;padding:2px 7px;background:var(--teal-l)}
.ti .k.b{color:var(--brand);border-color:color-mix(in srgb,var(--brand) 30%,transparent);background:var(--brand-l)}
.ti .k.a{color:var(--amber);border-color:rgba(245,181,61,.3);background:rgba(245,181,61,.1)}
h1{font-size:clamp(34px,6vw,64px);line-height:1.04;font-weight:800;letter-spacing:-.035em}
h2{font-size:clamp(26px,4vw,42px);line-height:1.12;font-weight:800;letter-spacing:-.03em}
h3{font-size:19px;font-weight:800;letter-spacing:-.015em}
.sec-head p{margin-top:16px;font-size:16.5px;color:var(--ink2);line-height:1.7}
.grad-text{background:linear-gradient(100deg,var(--brand),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}

/* ==== 卡片 ==== */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-sm);transition:transform .3s cubic-bezier(.2,.7,.2,1),box-shadow .3s,border-color .3s;position:relative}
@media (hover:hover) and (pointer:fine){
  .card{background:linear-gradient(165deg,var(--card),var(--card-2))}
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--line2)}
.card .ic{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;font-size:22px;margin-bottom:18px;
  background:var(--brand-l);color:var(--brand);border:1px solid color-mix(in srgb,var(--brand) 22%,transparent)}
.card .ic.teal{background:var(--teal-l);color:var(--teal);border-color:color-mix(in srgb,var(--teal) 22%,transparent)}
.card h3{margin-bottom:9px}
.card p{color:var(--ink2);font-size:14px}

.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* ==== 图片处理（高级感统一质感） ==== */
.media{position:relative;overflow:hidden;border-radius:var(--radius);border:1px solid var(--line2);background:var(--bg3)}
.media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.media::after{content:"";position:absolute;inset:0;background:var(--img-overlay);pointer-events:none}
.media:hover img{transform:scale(1.05)}
.media .cap{position:absolute;left:16px;bottom:14px;z-index:2;font-size:13px;font-weight:700;color:#fff;
  text-shadow:0 2px 12px rgba(0,0,0,.6);letter-spacing:.01em}
.media .tagfloat{position:absolute;top:14px;left:14px;z-index:2}

/* ==== 徽章/标签 ==== */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;
  padding:5px 11px;border-radius:999px;border:1px solid var(--line2);color:var(--ink2);
  background:color-mix(in srgb,var(--card) 70%,transparent);backdrop-filter:blur(6px)}
.badge.brand{color:var(--brand);background:var(--brand-l);border-color:color-mix(in srgb,var(--brand) 30%,transparent)}
.badge.teal{color:var(--teal);background:var(--teal-l);border-color:color-mix(in srgb,var(--teal) 30%,transparent)}
.badge.amber{color:var(--amber);background:rgba(245,181,61,.12);border-color:rgba(245,181,61,.3)}
/* 状态标签体系 */
.badge.new{color:#fff;border:0;background:linear-gradient(120deg,var(--brand),var(--teal));box-shadow:0 4px 12px -5px var(--brand);letter-spacing:.06em}
.badge.hot{color:#ff7a4d;background:rgba(255,122,77,.12);border-color:rgba(255,122,77,.32)}
.badge.evt{color:var(--amber);background:rgba(245,181,61,.12);border-color:rgba(245,181,61,.3)}
.badge.xs{font-size:10.5px;padding:3px 8px;gap:4px}
.badge .dot{width:6px;height:6px;border-radius:50%;background:currentColor;box-shadow:0 0 8px currentColor}
.tag{display:inline-block;font-size:12px;color:var(--ink2);background:color-mix(in srgb,var(--card) 60%,transparent);
  border:1px solid var(--line);border-radius:8px;padding:4px 10px;margin:3px 5px 0 0}

/* ==== 统计 ==== */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.stats .s{background:var(--card);padding:32px 18px;text-align:center;transition:background .25s}
.stats .s:hover{background:var(--card-2)}
.stats .s .n{font-size:clamp(30px,3.6vw,44px);font-weight:800;letter-spacing:-.03em;line-height:1;
  background:linear-gradient(120deg,var(--brand),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.stats .s .l{margin-top:10px;font-size:13px;color:var(--ink2);font-weight:600}

/* ==== 招牌微交互动画 ==== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
/* 移动端 / 国产浏览器（夸克等）：关动画、用纯色替代易失效的 gradient / color-mix */
@media (pointer: coarse), (hover: none), (max-width: 1024px) {
  .reveal,
  .reveal.in {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .btn{
    will-change:auto;
    transform:none !important;
  }
  .btn-primary{
    background:var(--brand) !important;
    background-image:none !important;
    color:#fff !important;
    -webkit-text-fill-color:#fff;
    box-shadow:0 4px 14px rgba(47,107,255,.28);
    border:1px solid var(--brand-d);
  }
  .btn-ghost{
    background:var(--card) !important;
    backdrop-filter:none;
    -webkit-backdrop-filter:none;
  }
  .btn-teal{background:var(--teal) !important}
  .card{
    background:var(--card) !important;
    background-image:none !important;
  }
  .badge.new{
    background:var(--brand) !important;
    background-image:none !important;
  }
  .grad-text{
    background:none !important;
    -webkit-background-clip:unset !important;
    background-clip:unset !important;
    color:var(--brand) !important;
  }
  .stats .s .n{
    background:none !important;
    -webkit-background-clip:unset !important;
    background-clip:unset !important;
    color:var(--brand) !important;
  }
  .nav{
    backdrop-filter:none;
    -webkit-backdrop-filter:none;
    background:var(--bg) !important;
  }
  .toast,.modal-mask,.doc-bar,.img-preview{backdrop-filter:none;-webkit-backdrop-filter:none}
  .float{animation:none !important}
}
.float{animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ==== 跑马灯（技术标签流动） ==== */
.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee-track{display:flex;gap:44px;width:max-content;animation:scrollx 28s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee .mi{color:var(--ink2);font-weight:700;font-size:15px;letter-spacing:.02em;display:flex;align-items:center;gap:10px;white-space:nowrap}
.marquee .mi::before{content:"◆";color:var(--teal);font-size:9px}
@keyframes scrollx{to{transform:translateX(-50%)}}

/* ==== 页脚 ==== */
.footer{background:var(--bg2);border-top:1px solid var(--line);padding:52px 0 24px;margin-top:24px;position:relative}
.footer-grid{display:grid;grid-template-columns:minmax(240px,1.7fr) repeat(4,minmax(0,1fr));gap:32px 40px;align-items:start}
.footer h4{font-size:12px;font-weight:800;color:var(--ink);margin-bottom:14px;letter-spacing:.08em}
.footer ul{list-style:none}
.footer li{margin-bottom:9px}
.footer li a{color:var(--ink2);font-size:13.5px}
.footer li a:hover{color:var(--brand)}
.footer .about .logo{margin-bottom:2px}
.footer .about p{font-size:13.5px;color:var(--ink2);margin-top:14px;max-width:40ch;line-height:1.7}
.footer-contact{display:none!important} /* 临时隐藏「联系我们」，恢复时改回 inline-flex */
.footer-contact:hover{color:var(--brand-d)}
.footer-bottom{max-width:var(--maxw);margin:32px auto 0;padding:18px 24px 0;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;color:var(--ink3);font-size:12.5px}
.footer-icp{color:var(--ink3);font-size:12.5px}
.footer-icp:hover{color:var(--ink2)}

/* ==== 响应式 ==== */
@media(max-width:960px){.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:26px}}
@media(max-width:720px){
  section{padding:48px 0}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-grid .about{grid-column:1 / -1}
  .footer-grid > :not(.about){display:none}
  .hide-sm{display:none!important}
  .wrap{padding:0 max(16px, env(safe-area-inset-left,0px)) 0 max(16px, env(safe-area-inset-right,0px))}
  .nav-in{padding:0 16px}
  .logo-wordmark{height:14px}
  .logo-sub{font-size:14.5px}
  .logo-lockup{gap:2px}
  .shead{margin-bottom:26px;gap:14px;align-items:flex-start}
  .shead .idx{display:none}
  .shead .l{gap:0}
  .shead .sub{font-size:14px}
  .shead-actions{width:100%;flex-direction:column;align-items:stretch;gap:12px;position:relative;z-index:2;isolation:isolate}
  .shead-actions .btn{width:100%;justify-content:center;touch-action:manipulation;-webkit-tap-highlight-color:transparent;cursor:pointer;-webkit-user-select:none;user-select:none}
  .ticker-head{padding:10px 8px;font-size:10px;letter-spacing:.04em}
  .ti{font-size:12px}
  .card{padding:20px 16px}
  .card:hover{transform:none}
  .btn,.chip,.seg button{min-height:44px}
  .btn-sm{min-height:40px}
  .icon-btn{width:42px;height:42px}
  .footer{padding:22px 0 max(12px, env(safe-area-inset-bottom,0px));margin-top:0}
  .footer h4{margin-bottom:8px}
  .footer li{margin-bottom:5px}
  .footer .about p{margin-top:8px;font-size:13px;max-width:none}
  .footer-contact{margin-top:10px}
  .footer-bottom{margin-top:16px;padding:12px max(16px, env(safe-area-inset-left,0px)) 0;flex-direction:column}
  .modal-mask{padding:12px;align-items:flex-end}
  .modal{border-radius:16px 16px 12px 12px;padding:20px 16px max(20px, env(safe-area-inset-bottom,0px));max-height:min(92dvh,760px)}
  .qy-dialog-mask{padding:12px;align-items:flex-end}
  .qy-dialog{border-radius:16px 16px 12px 12px;padding:24px 20px max(20px, env(safe-area-inset-bottom,0px))}
  .field input,.field select,.field textarea{font-size:16px}
  .chip{display:inline-flex;align-items:center}
  .page-head{padding:24px 0 4px}
}
@media(max-width:420px){.footer-grid{grid-template-columns:1fr}}
@media(hover:none){
  .card:hover,.m-card:hover,.repo:hover{transform:none}
}

/* ==== 表单 / Toast / 弹层（920 功能页） ==== */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:13px;font-weight:700;color:var(--ink2)}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;border-radius:11px;border:1px solid var(--line2);
  background:var(--bg2);color:var(--ink);font:inherit;font-size:16px;outline:none;transition:border-color .18s,box-shadow .18s}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-l)}
.field textarea{min-height:110px;resize:vertical}
.field .hint{font-size:12px;color:var(--ink3)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:720px){.form-row{grid-template-columns:1fr}}
.seg{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.seg button{border:1px solid var(--line2);background:var(--card);color:var(--ink2);border-radius:999px;
  padding:8px 14px;font-weight:700;font-size:13px;cursor:pointer}
.seg button.active{color:var(--brand);background:var(--brand-l);border-color:color-mix(in srgb,var(--brand) 35%,transparent)}
.toast-host{position:fixed;top:84px;left:50%;transform:translateX(-50%);z-index:400;display:flex;flex-direction:column;gap:8px;pointer-events:none}
.toast{pointer-events:auto;min-width:280px;max-width:min(520px,92vw);padding:13px 18px;border-radius:14px;
  background:color-mix(in srgb,var(--card) 88%,transparent);border:1px solid var(--line2);backdrop-filter:blur(12px);
  box-shadow:var(--shadow-lg);font-weight:700;font-size:14px;color:var(--ink);text-align:center}
.modal-mask{position:fixed;inset:0;z-index:180;background:rgba(11,18,32,.42);backdrop-filter:blur(6px);
  display:none;align-items:center;justify-content:center;padding:24px}
.modal-mask.open{display:flex}
.modal{width:min(560px,100%);max-height:min(86vh,760px);overflow:auto;background:var(--card);
  border:1px solid var(--line2);border-radius:20px;padding:28px;box-shadow:var(--shadow-lg)}
.modal h3{margin-bottom:6px}
.btn-danger{background:#dc2626;color:#fff;border-color:#dc2626}
.btn-danger:hover{color:#fff;background:#b91c1c;border-color:#b91c1c}
.qy-dialog-mask{position:fixed;inset:0;z-index:210;background:rgba(11,18,32,.42);backdrop-filter:blur(6px);
  display:none;align-items:center;justify-content:center;padding:24px;animation:qyDialogFadeIn .18s ease}
.qy-dialog-mask.open{display:flex}
.qy-dialog{width:min(400px,100%);background:var(--card);border:1px solid var(--line2);border-radius:20px;
  padding:28px 28px 24px;box-shadow:var(--shadow-lg);text-align:center;animation:qyDialogPop .2s cubic-bezier(.2,.7,.2,1)}
.qy-dialog-icon{width:48px;height:48px;border-radius:50%;margin:0 auto 16px;display:grid;place-items:center;
  font-size:22px;font-weight:900;background:var(--brand-l);color:var(--brand)}
.qy-dialog-icon.is-danger{background:rgba(220,38,38,.08);color:#dc2626}
.qy-dialog-title{font-size:18px;font-weight:800;margin:0 0 8px;letter-spacing:-.02em;color:var(--ink)}
.qy-dialog-message{font-size:14px;line-height:1.6;color:var(--ink2);margin:0 0 22px;white-space:pre-wrap}
.qy-dialog-label{display:block;font-size:13px;font-weight:700;color:var(--ink2);text-align:left;margin-bottom:6px}
.qy-dialog-field{margin-bottom:18px;text-align:left}
.qy-dialog-field input{font-size:16px}
.qy-dialog-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.qy-dialog-actions .btn{min-width:96px}
body.qy-dialog-open{overflow:hidden}
@keyframes qyDialogFadeIn{from{opacity:0}to{opacity:1}}
@keyframes qyDialogPop{from{opacity:0;transform:translateY(8px) scale(.98)}to{opacity:1;transform:none}}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{cursor:pointer;font-size:13px;font-weight:700;padding:8px 15px;border-radius:999px;
  border:1px solid var(--line2);background:var(--card);color:var(--ink2);transition:.16s}
.chip:hover,.chip.active{border-color:var(--brand);color:var(--brand);background:var(--brand-l)}
.path-flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:10px;align-items:stretch}
.path-arrow{display:grid;place-items:center;color:var(--teal);font-size:22px;font-weight:800}
@media(max-width:860px){.path-flow{grid-template-columns:1fr}.path-arrow{transform:rotate(90deg);padding:4px 0}}
.event{position:relative;overflow:hidden;padding:0}
.event .ph{position:relative;height:170px;overflow:hidden;isolation:isolate}
.event .ph img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s cubic-bezier(.2,.7,.2,1);transform-origin:center center}
.event:hover .ph img{transform:scale(1.06)}
.event .ph::after{content:"";position:absolute;inset:0 -2px -24px;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,transparent 22%,color-mix(in srgb,var(--card) 55%,transparent) 58%,var(--card) 88%,var(--card) 100%)}
.event .ph .badge{position:absolute;top:14px;right:14px;z-index:2;width:max-content;max-width:calc(100% - 28px)}
.event .event-status-top{position:absolute;top:14px;right:14px;z-index:3;width:max-content;max-width:calc(100% - 28px)}
.event .ebody{position:relative;z-index:2;margin-top:-2px;padding:20px 24px 26px;background:var(--card)}
.event .when{font-size:13px;font-weight:700;color:var(--teal);margin-bottom:8px}
.timeline{display:flex;flex-direction:column;gap:0;padding-left:8px}
.tl-row{display:grid;grid-template-columns:120px 18px 1fr;gap:14px;align-items:start;padding:14px 0}
.tl-row .t{font-weight:800;color:var(--teal);font-size:13.5px}
.tl-row .dot{width:10px;height:10px;border-radius:50%;background:var(--brand);margin-top:6px;box-shadow:0 0 0 4px var(--brand-l)}
.tl-row .line{position:relative}
.tl-row .line::after{content:"";position:absolute;left:4px;top:18px;bottom:-14px;width:2px;background:var(--line)}
.tl-row:last-child .line::after{display:none}

/* ==== 无障碍 ==== */
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  #fxCanvas,.logo .mark::after{display:none}
}