/* ===== 侧边栏样式 ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{--bg-page:#ffffff;--glass-border:rgba(0,0,0,0.06);--card-bg:#ffffff;--text-primary:#1e2a3e;--text-secondary:#5b6e8c;--text-muted:#7e8b9c;--accent:#3b82f6;--accent-light:rgba(59,130,246,0.12);--shadow-sm:0 4px 12px rgba(0,0,0,0.05);--shadow-md:0 8px 24px rgba(0,0,0,0.08);--shadow-lg:0 20px 35px -12px rgba(0,0,0,0.15);--sidebar-bg:#ffffff;--sidebar-shadow:0 0 20px rgba(0,0,0,0.05);--submenu-bg:rgba(245,247,250,0.98);--contact-card-bg:rgba(255,255,255,0.7);--sidebar-width:260px}
body.dark{--bg-page:#0f172a;--glass-border:rgba(255,255,255,0.08);--card-bg:#1e293b;--text-primary:#e2e8f0;--text-secondary:#94a3b8;--text-muted:#64748b;--accent:#60a5fa;--accent-light:rgba(96,165,250,0.15);--sidebar-bg:#1e293b;--sidebar-shadow:0 0 20px rgba(0,0,0,0.3);--submenu-bg:#1e293b;--contact-card-bg:rgba(30,41,59,0.8)}
body.dark .sub-nav{background:rgba(15,23,42,0.98);box-shadow:0 18px 45px rgba(0,0,0,0.35),0 1px 0 rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12)}
body.dark .submenu-panel{background:#1e293b;border-color:rgba(255,255,255,0.1);box-shadow:0 12px 40px rgba(0,0,0,0.4)}
body{font-family:'Inter',sans-serif;background:var(--bg-page);color:var(--text-primary);min-height:100vh}
.sidebar{position:fixed;left:20px;top:20px;bottom:20px;width:var(--sidebar-width);background:var(--sidebar-bg);border-radius:32px;border:1px solid var(--glass-border);box-shadow:0 4px 24px rgba(0,0,0,0.06),1px 0 8px rgba(0,0,0,0.04);z-index:100;display:flex;flex-direction:column;overflow:hidden}
.sidebar-inner{flex:1;overflow-y:hidden;overflow-x:hidden;padding:clamp(12px,2.5vh,24px) 12px}
.sidebar-logo{display:flex;flex-direction:column;align-items:center;margin-bottom:clamp(8px,1.5vh,14px);cursor:pointer;padding-top:clamp(4px,1vh,10px)}
.sidebar-logo img{width:clamp(50px,10vh,90px);height:clamp(50px,10vh,90px);border-radius:20px;object-fit:contain}
.sidebar-logo .site-name{font-size:clamp(0.65rem,1.2vh,0.85rem);font-weight:700;background:linear-gradient(120deg,var(--text-primary),var(--accent));background-clip:text;-webkit-background-clip:text;color:transparent;white-space:nowrap;margin-top:clamp(4px,0.8vh,8px)}
.sidebar-nav{display:flex;flex-direction:column;gap:clamp(4px,1.5vh,14px);width:100%;align-items:center;margin-top:clamp(10px,4vh,58px)}
.nav-item-wrapper{position:relative;width:100%;display:flex;justify-content:center}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 28px;border-radius:28px;color:var(--text-secondary);cursor:pointer;font-weight:500;font-size:0.9rem;text-decoration:none;white-space:nowrap;width:auto;min-width:180px}
.nav-item-wrapper.has-sub > .nav-item{position:relative;padding-right:34px}
.nav-item-wrapper.has-sub > .nav-item::after{content:'';position:absolute;right:15px;top:50%;width:7px;height:7px;border-top:2px solid currentColor;border-right:2px solid currentColor;transform:translateY(-50%) rotate(45deg);opacity:.75;pointer-events:none;transition:transform 0.18s ease,border-color 0.18s ease}
.nav-item-wrapper.has-sub:hover > .nav-item::after,.nav-item-wrapper.has-sub > .nav-item:hover::after{border-top:0;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:translateY(-65%) rotate(45deg)}
.nav-item i,.sub-item i{width:clamp(16px,2vh,20px);text-align:center;font-size:clamp(0.9rem,2vh,1.2rem);flex-shrink:0;display:inline-block}
.nav-item svg,.sub-item svg{width:clamp(16px,2vh,20px);height:clamp(16px,2vh,20px);flex-shrink:0;display:block}
.nav-item > span{flex:1;text-align:left;margin-left:6px}
.nav-item:hover,.nav-item.active{background:var(--accent-light);color:var(--accent)}
/* === 彩虹书签菜单 === */
.nav-item-wrapper{perspective:600px}
.nav-item{border-radius:8px!important;border:none!important;backface-visibility:hidden}
.nav-item-wrapper:nth-child(1) .nav-item{background:#fecaca;color:#991b1b;transform:rotate(-2deg)}
.nav-item-wrapper:nth-child(2) .nav-item{background:#fed7aa;color:#9a3412;transform:rotate(2deg)}
.nav-item-wrapper:nth-child(3) .nav-item{background:#fde047;color:#854d0e;transform:rotate(-2deg)}
.nav-item-wrapper:nth-child(4) .nav-item{background:#86efac;color:#166534;transform:rotate(2deg)}
.nav-item-wrapper:nth-child(5) .nav-item{background:#93c5fd;color:#1e40af;transform:rotate(-2deg)}
.nav-item-wrapper:nth-child(6) .nav-item{background:#7c3aed;color:#ffffff;transform:rotate(2deg)}
.nav-item-wrapper:nth-child(7) .nav-item{background:#be185d;color:#ffffff;transform:rotate(-2deg)}
.nav-item-wrapper .nav-item:hover{filter:brightness(0.88);transform:translateX(4px)}
.sub-nav{display:none!important}
.submenu-panel{position:fixed;left:calc(20px + var(--sidebar-width) + 6px);width:max-content;min-width:180px;max-width:300px;height:auto;background:var(--sidebar-bg);border:1px solid var(--glass-border);border-radius:16px;box-shadow:0 12px 36px -8px rgba(0,0,0,0.12);z-index:90;opacity:0;visibility:hidden;pointer-events:none;transform:translateX(-6px) scale(0.97);transition:opacity 0.15s ease,transform 0.2s cubic-bezier(0.2,0.9,0.4,1),visibility 0.15s ease;overflow:visible}
.submenu-panel::before{content:"";position:absolute;left:-6px;top:var(--arrow-top,20px);width:12px;height:12px;background:var(--sidebar-bg);transform:rotate(45deg);border:1px solid var(--glass-border);border-right:none;border-top:none}
.submenu-panel.active{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(0) scale(1)}
.submenu-panel-inner{position:relative;z-index:1;width:max-content;min-width:100%;padding:6px;display:flex;flex-direction:column;overflow:hidden}
.submenu-panel-list{width:max-content;min-width:100%;padding:0;display:flex;flex-direction:column;gap:2px}
.submenu-panel-list .sub-item{padding:10px 16px;border-radius:10px;margin:0;background:transparent;color:var(--text-secondary);font-size:.88rem;font-weight:500;text-decoration:none;white-space:nowrap;display:flex;align-items:center;gap:10px;transition:all 0.2s}
.submenu-panel-list .sub-item:hover{background:var(--accent-light);color:var(--accent);transform:translateX(4px)}
.pin-control{position:absolute;right:8px;top:6px;background:rgba(0,0,0,0.1);border-radius:20px;padding:2px 8px;cursor:pointer;font-size:11px;color:var(--accent);opacity:0.7;z-index:15}
.pin-control:hover{opacity:1;background:var(--accent-light)}
.sidebar-footer{margin-top:auto;padding:clamp(8px,2vh,16px) 12px;border-top:1px solid var(--glass-border)}
.qr-row{display:flex;gap:clamp(8px,2vh,20px);justify-content:center;margin-bottom:clamp(4px,1vh,10px);background:rgba(255,255,255,0.5);border-radius:18px;padding:clamp(6px,1.5vh,12px) clamp(8px,2vh,16px);backdrop-filter:blur(4px)}
.qr-item{display:flex;flex-direction:column;align-items:center;gap:6px}
.qr-img{width:clamp(50px,10vh,100px);height:clamp(50px,10vh,100px);border-radius:16px;object-fit:cover;display:block;box-shadow:0 2px 8px rgba(0,0,0,0.06)}
.qr-label{font-size:clamp(0.5rem,1vh,0.68rem);color:var(--text-muted);white-space:nowrap;font-weight:500}
.contact-row{display:flex;justify-content:center;gap:6px;flex-wrap:wrap;margin-top:4px}
.contact-item{display:flex;align-items:center;justify-content:center;width:clamp(28px,3vh,36px);height:clamp(28px,3vh,36px);border-radius:8px;cursor:pointer;font-size:clamp(0.85rem,1.5vh,1.05rem);color:var(--text-muted);text-decoration:none;transition:all 0.2s;background:transparent;border:none}
.contact-item:hover{color:var(--text-primary);background:rgba(0,0,0,0.04)}
.about-btn{display:flex;justify-content:center;margin-top:8px;width:100%}
.about-btn .nav-item{background:transparent;color:var(--text-muted);border:none;font-weight:500;border-radius:8px;padding:8px 20px;font-size:0.85rem;justify-content:center;min-width:auto;width:auto}
.about-btn .nav-item:hover{background:rgba(0,0,0,0.04);color:var(--text-primary)}

/* ===== 手机端（原主题风格：顶部图标栏） ===== */
@media(max-width:1000px){
  html{overflow-x:hidden}
  body{overflow-x:hidden;padding-top:56px}

  /* 顶栏 */
  .mobile-header{display:flex;position:fixed;top:0;left:0;right:0;height:56px;align-items:center;z-index:1000}
  .mobile-header-inner{display:flex;align-items:center;width:100%;height:100%;padding:0 10px}

  /* Logo（左对齐） */
  .mobile-header-logo{display:flex;align-items:center;flex-shrink:0;margin:0 10px 0 4px}
  .mobile-header-logo img{height:34px;width:auto;border-radius:8px;display:block}

  /* 导航图标（居中） */
  .mobile-header-nav{display:flex;align-items:center;justify-content:center;flex:1;gap:2px;min-width:0;overflow-x:auto;overflow-y:hidden;scrollbar-width:none}
  .mobile-header-nav::-webkit-scrollbar{display:none}
  .mobile-nav-item{position:relative;flex-shrink:0}
  .mobile-nav-btn{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:none;background:transparent;color:#33a6b8;cursor:pointer;transition:background 0.15s,color 0.15s;flex-shrink:0;text-decoration:none}
  body.dark .mobile-nav-btn{color:#5fc7d6}
  .mobile-nav-btn:hover{background:rgba(51,166,184,0.12);color:#33a6b8}
  .mobile-nav-btn svg{width:22px;height:22px;display:block}
  .mobile-nav-btn i{font-size:1.3rem;display:block}
  .mobile-sub-nav{display:block;visibility:hidden;position:fixed;left:10px;right:auto;top:56px;z-index:998;width:max-content;min-width:160px;max-width:calc(100vw - 20px);max-height:calc(100vh - 72px);overflow-y:auto;overflow-x:hidden;background:rgba(255,255,255,0.98);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:22px;box-shadow:0 16px 40px rgba(15,23,42,0.14);padding:8px;opacity:0;transform:translateY(-8px);pointer-events:none;transition:opacity 0.16s ease,transform 0.16s ease;white-space:nowrap}
  body.dark .mobile-sub-nav{background:rgba(15,23,42,0.98);box-shadow:0 16px 40px rgba(0,0,0,0.35);border-color:rgba(255,255,255,0.1)}
  .mobile-nav-has-sub.open .mobile-sub-nav{display:block;visibility:visible;opacity:1;transform:translateY(0);pointer-events:auto}
  .mobile-sub-item{display:flex;align-items:center;gap:10px;padding:12px;border-radius:16px;color:var(--text-secondary);font-size:0.9rem;text-decoration:none;white-space:nowrap}
  .mobile-sub-item svg{width:20px;height:20px;flex-shrink:0;display:block}
  .mobile-sub-item i{width:20px;text-align:center;font-size:1.2rem;flex-shrink:0;display:inline-block}
  .mobile-sub-item:hover{background:var(--accent-light);color:var(--accent);opacity:1}

  /* 右侧操作按钮（紧凑右对齐） */
  .mobile-header-right{display:flex;align-items:center;gap:0;flex-shrink:0;margin-left:4px}
  .mobile-header-action{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:8px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;transition:background 0.15s,color 0.15s;text-decoration:none}
  .mobile-header-action:hover{background:var(--accent-light);color:var(--accent)}
  .mobile-header-action svg{width:18px;height:18px;display:block}
  .mobile-theme-btn .header-icon-sun{display:block}
  .mobile-theme-btn .header-icon-moon{display:none}
  body.dark .mobile-theme-btn .header-icon-sun{display:none}
  body.dark .mobile-theme-btn .header-icon-moon{display:block}
  /* 隐藏侧边栏（手机端不需要） */
  .sidebar{display:none}
  .submenu-panel{display:none!important}
  .desktop-actions{display:none}
}
@media(min-width:1001px){
  .mobile-header{display:none}
  .desktop-actions{position:fixed;top:24px;right:max(8px,calc(50vw - 825px));z-index:999;display:flex;align-items:center;gap:6px;background:var(--sidebar-bg);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid var(--glass-border);border-radius:40px;padding:5px 5px 5px 18px;box-shadow:0 4px 20px rgba(0,0,0,0.06);transition:box-shadow 0.3s}
  .desktop-actions:hover{box-shadow:0 8px 30px rgba(0,0,0,0.1)}
  body.dark .desktop-actions{box-shadow:0 4px 20px rgba(0,0,0,0.15)}
  body.dark .desktop-actions:hover{box-shadow:0 8px 30px rgba(0,0,0,0.25)}
  .desktop-actions-search{display:flex;align-items:center;gap:10px;cursor:pointer;padding:7px 16px;border-radius:32px;color:var(--text-secondary);font-size:0.85rem;font-weight:500;transition:all 0.25s;background:var(--accent-light);border:1px solid transparent}
  .desktop-actions-search:hover{background:var(--accent);color:#fff;border-color:var(--accent);transform:scale(1.02)}
  .desktop-actions-search:active{transform:scale(0.98)}
  .desktop-actions-search svg{width:18px;height:18px;flex-shrink:0;opacity:0.7}
  .desktop-actions-search:hover svg{opacity:1}
  .desktop-actions-search kbd{font-size:0.62rem;padding:2px 7px;border-radius:5px;background:rgba(0,0,0,0.08);color:var(--text-muted);font-family:inherit;margin-left:2px;border:1px solid rgba(0,0,0,0.05)}
  .desktop-actions-search:hover kbd{background:rgba(255,255,255,0.2);color:#fff;border-color:rgba(255,255,255,0.15)}
  body.dark .desktop-actions-search kbd{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.06)}
  body.dark .desktop-actions-search:hover kbd{background:rgba(255,255,255,0.15)}
  .desktop-actions-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;transition:all 0.25s;text-decoration:none;flex-shrink:0;margin:0 1px}
  .desktop-actions-btn:hover{background:var(--accent-light);color:var(--accent);transform:scale(1.08)}
  .desktop-actions-btn:active{transform:scale(0.95)}
  .desktop-actions-btn svg{width:18px;height:18px}
  .desktop-theme-btn .desktop-icon-sun{display:block}
  .desktop-theme-btn .desktop-icon-moon{display:none}
  body.dark .desktop-theme-btn .desktop-icon-sun{display:none}
  body.dark .desktop-theme-btn .desktop-icon-moon{display:block}
  body{padding-top:0}
}
.gateway-footer{display:none!important}