/* DDNA-5D 管理后台样式 */
:root{
  --primary:#4f6ef7; --primary-d:#3b5bd6; --primary-l:#eef2ff;
  --bg:#f0f2f8; --card:#fff; --border:#e5e8f0;
  --text:#1a1f36; --muted:#6b7280; --muted2:#9ca3af;
  --success:#10b981; --danger:#ef4444; --warn:#f59e0b;
  --sidebar:#0f1429; --sidebar2:#1a2244; --sidebar-text:#8b95b8;
  --radius:12px; --shadow:0 1px 3px rgba(0,0,0,.04),0 4px 16px rgba(0,0,0,.04);
  --shadow-lg:0 8px 40px rgba(0,0,0,.12);
  --grad:linear-gradient(135deg,#4f6ef7,#7c3aed);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:"Segoe UI","Microsoft YaHei",system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;border-radius:8px;font-size:14px;padding:8px 16px;transition:.2s}
.btn{background:var(--grad);color:#fff;padding:8px 18px;border-radius:8px;display:inline-block;border:none;cursor:pointer;font-size:14px;font-weight:500;box-shadow:0 2px 8px rgba(79,110,247,.25)}
.btn:hover{box-shadow:0 4px 16px rgba(79,110,247,.35);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--border);font-weight:500}
.btn-ghost:hover{background:var(--primary-l);color:var(--primary);border-color:var(--primary)}
.btn-danger{background:var(--danger);color:#fff;box-shadow:0 2px 8px rgba(239,68,68,.2)}
.btn-danger:hover{box-shadow:0 4px 16px rgba(239,68,68,.3);transform:translateY(-1px)}
.btn-sm{padding:5px 12px;font-size:12px}
.btn-lg{padding:12px 28px;font-size:15px;border-radius:10px}
.btn-block{width:100%;padding:11px;margin-top:8px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}
input,select,textarea{font-family:inherit;font-size:14px;padding:10px 14px;border:1.5px solid var(--border);border-radius:10px;background:#fff;color:var(--text);width:100%;outline:none;transition:.2s}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(79,110,247,.1)}
label{display:block;margin-bottom:6px;font-weight:600;color:var(--text);font-size:13px}
.form-row{margin-bottom:16px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* ===== 登录弹窗 ===== */
.auth-tabs{display:flex;gap:0;margin-bottom:20px;border-bottom:2px solid var(--border)}
.auth-tabs .tab{flex:1;background:none;color:var(--muted);padding:10px;font-size:14px;border-radius:0;border-bottom:2px solid transparent;margin-bottom:-2px;font-weight:500;transition:.2s}
.auth-tabs .tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}

/* ===== 布局 ===== */
.layout{display:flex;min-height:100vh}
.sidebar{width:230px;background:var(--sidebar);color:var(--sidebar-text);display:flex;flex-direction:column;position:fixed;height:100vh;left:0;top:0;z-index:20;box-shadow:2px 0 20px rgba(0,0,0,.08)}
.sidebar .brand{padding:22px 20px;font-size:18px;color:#fff;font-weight:700;display:flex;align-items:center;gap:12px;border-bottom:1px solid rgba(255,255,255,.06)}
.sidebar .brand .dot{width:34px;height:34px;border-radius:10px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:16px;box-shadow:0 4px 12px rgba(79,110,247,.4)}
.sidebar nav{flex:1;padding:14px 12px}
.sidebar nav a{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:10px;color:var(--sidebar-text);margin-bottom:3px;font-size:14px;font-weight:500;transition:.2s;position:relative}
.sidebar nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.sidebar nav a.active{background:rgba(79,110,247,.15);color:#fff}
.sidebar nav a.active::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--grad)}
.sidebar nav a .ico{width:20px;text-align:center;opacity:.85;font-size:16px}
.sidebar nav a.active .ico{opacity:1}
.sidebar .foot{padding:16px 20px;border-top:1px solid rgba(255,255,255,.06);font-size:12px;color:var(--muted2)}
.sidebar .foot .user{color:#fff;font-weight:600;margin-bottom:2px;font-size:13px}

.main{flex:1;margin-left:230px;display:flex;flex-direction:column;min-height:100vh}
.topbar{background:var(--card);border-bottom:1px solid var(--border);padding:16px 28px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10;box-shadow:0 1px 3px rgba(0,0,0,.03)}
.topbar h2{font-size:18px;font-weight:700;letter-spacing:-.3px}
.topbar .right{display:flex;align-items:center;gap:12px}
.topbar .right .chip{background:var(--primary-l);color:var(--primary);padding:5px 14px;border-radius:20px;font-size:12px;font-weight:600}
.content{padding:28px;flex:1}

/* ===== 卡片/表格 ===== */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:20px;transition:.2s}
.card:hover{box-shadow:0 2px 4px rgba(0,0,0,.04),0 8px 24px rgba(0,0,0,.06)}
.card-title{font-size:16px;font-weight:700;margin-bottom:18px;display:flex;align-items:center;justify-content:space-between;letter-spacing:-.2px}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px;margin-bottom:22px}
.stat{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 22px;display:flex;align-items:center;gap:16px;transition:.2s}
.stat:hover{transform:translateY(-2px);box-shadow:0 4px 20px rgba(0,0,0,.08)}
.stat .ic{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;flex-shrink:0}
.stat .ic.b1{background:linear-gradient(135deg,#4f6ef7,#7c3aed)}
.stat .ic.b2{background:linear-gradient(135deg,#10b981,#34d399)}
.stat .ic.b3{background:linear-gradient(135deg,#f59e0b,#fbbf24)}
.stat .ic.b4{background:linear-gradient(135deg,#ef4444,#f87171)}
.stat .num{font-size:24px;font-weight:800;letter-spacing:-.5px}
.stat .lbl{color:var(--muted);font-size:12px;font-weight:500}

table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--border);font-size:13px}
th{color:var(--muted);font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.05em;background:#f8f9fc}
tr:hover td{background:#f8f9fc}
.tag{display:inline-block;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600}
.tag-ok{background:#d1fae5;color:var(--success)}
.tag-no{background:#fee2e2;color:var(--danger)}
.tag-info{background:var(--primary-l);color:var(--primary)}
.tag-warn{background:#fef3c7;color:var(--warn)}
.empty{text-align:center;padding:48px;color:var(--muted);font-size:14px}

/* ===== 弹窗 ===== */
.modal-mask{position:fixed;inset:0;background:rgba(10,14,39,.5);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:50;animation:fadeIn .2s}
.modal{background:var(--card);border-radius:16px;box-shadow:var(--shadow-lg);width:520px;max-width:92vw;max-height:88vh;overflow:auto;animation:slideUp .25s ease-out}
.modal .mhd{padding:20px 24px;border-bottom:1px solid var(--border);font-size:17px;font-weight:700;display:flex;justify-content:space-between;align-items:center;letter-spacing:-.3px}
.modal .mhd .x{cursor:pointer;color:var(--muted);font-size:22px;transition:.15s}
.modal .mhd .x:hover{color:var(--text)}
.modal .mbd{padding:24px}
.modal .mft{padding:16px 24px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:10px}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}

/* ===== toast ===== */
.toast-wrap{position:fixed;top:24px;right:24px;z-index:100;display:flex;flex-direction:column;gap:10px}
.toast{background:var(--card);border-radius:10px;box-shadow:var(--shadow-lg);padding:14px 20px;font-size:13px;font-weight:500;border-left:4px solid var(--primary);min-width:260px;animation:slideIn .25s ease-out}
.toast.ok{border-left-color:var(--success)}
.toast.err{border-left-color:var(--danger)}
@keyframes slideIn{from{transform:translateX(30px);opacity:0}to{transform:translateX(0);opacity:1}}

.toolbar{display:flex;gap:10px;margin-bottom:18px;align-items:center;flex-wrap:wrap}
.toolbar .grow{flex:1}
.muted{color:var(--muted)}
.right{text-align:right}
.mono{font-family:Consolas,Monaco,monospace;font-size:12px}
.pill{display:inline-flex;align-items:center;gap:6px}
.dot-on{width:8px;height:8px;border-radius:50%;background:var(--success);display:inline-block;box-shadow:0 0 8px var(--success)}
.dot-off{width:8px;height:8px;border-radius:50%;background:var(--muted2);display:inline-block}

/* ===== DDNS 介绍页 ===== */
.lnav{position:fixed;top:0;left:0;right:0;z-index:30;background:rgba(10,14,39,.88);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.06)}
.lnav-inner{max-width:1140px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}
.lnav-brand{color:#fff;font-size:18px;font-weight:700;display:flex;align-items:center;gap:10px}
.lnav-links{display:flex;align-items:center;gap:28px}
.lnav-links a{color:#a0aac8;font-size:14px;font-weight:500;transition:.2s}
.lnav-links a:hover{color:#fff}

.btn-glow{background:linear-gradient(135deg,#6366f1,#06b6d4);color:#fff;border:none;border-radius:10px;padding:12px 28px;font-size:15px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:8px;box-shadow:0 4px 24px rgba(99,102,241,.4);transition:.25s}
.btn-glow:hover{box-shadow:0 8px 32px rgba(99,102,241,.55);transform:translateY(-2px)}
.btn-glow.btn-sm{padding:7px 18px;font-size:13px;border-radius:8px}
.btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.2);border-radius:10px;padding:12px 28px;font-size:15px;font-weight:500;cursor:pointer;transition:.25s}
.btn-outline:hover{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.06);transform:translateY(-1px)}

.hero{position:relative;min-height:92vh;display:flex;align-items:center;justify-content:center;background:#0a0e27;color:#fff;text-align:center;padding:100px 24px 80px;overflow:hidden}
.hero-blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.45;animation:float 8s ease-in-out infinite}
.hero-blob.b1{width:520px;height:520px;background:#6366f1;top:-160px;left:-120px}
.hero-blob.b2{width:480px;height:480px;background:#06b6d4;bottom:-120px;right:-100px;animation-delay:-4s}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:50px 50px;mask-image:radial-gradient(ellipse at center,#000 30%,transparent 70%)}
@keyframes float{0%,100%{transform:translate(0,0)}50%{transform:translate(30px,-30px)}}
.hero-inner{position:relative;max-width:720px;z-index:1}
.hero-badge{display:inline-block;background:rgba(99,102,241,.12);border:1px solid rgba(99,102,241,.3);color:#a5b4fc;padding:7px 20px;border-radius:20px;font-size:13px;font-weight:500;margin-bottom:28px}
.hero h1{font-size:54px;font-weight:800;line-height:1.12;margin-bottom:24px;letter-spacing:-1.5px}
.grad-text{background:linear-gradient(135deg,#818cf8,#22d3ee);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{font-size:17px;color:#94a3b8;margin-bottom:36px;line-height:1.7;max-width:580px;margin-left:auto;margin-right:auto}
.hero-cta{display:flex;gap:16px;justify-content:center;margin-bottom:48px}

.sec{padding:80px 24px;max-width:1140px;margin:0 auto}
.sec-alt{background:#f8fafc;max-width:none;padding-left:0;padding-right:0}
.sec-alt>.sec-head,.sec-alt>.prov-row,.sec-alt>.guide-grid{max-width:1140px;margin-left:auto;margin-right:auto}
.sec-head{text-align:center;margin-bottom:56px}
.sec-head h2{font-size:34px;font-weight:800;margin-bottom:12px;letter-spacing:-.8px}
.sec-head p{color:var(--muted);font-size:15px}

/* ===== 配置指南 ===== */
.guide-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.guide-card{background:#fff;border:1px solid #f1f5f9;border-radius:16px;padding:30px 28px;transition:.3s;position:relative;overflow:hidden}
.guide-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:.3s}
.guide-card:hover{box-shadow:0 16px 48px rgba(15,23,42,.1);transform:translateY(-4px);border-color:transparent}
.guide-card:hover::before{transform:scaleX(1)}
.guide-step{width:40px;height:40px;border-radius:12px;background:var(--grad);color:#fff;font-size:17px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-bottom:18px;box-shadow:0 4px 16px rgba(79,110,247,.3)}
.guide-card h3{font-size:17px;font-weight:700;margin-bottom:10px;letter-spacing:-.2px}
.guide-card p{color:var(--muted);font-size:13.5px;line-height:1.7}
.guide-card .kw{color:var(--primary);font-weight:600}

.prov-guide{background:#fff;border:1px solid #f1f5f9;border-radius:16px;overflow:hidden;transition:.3s}
.prov-guide:hover{box-shadow:0 12px 36px rgba(15,23,42,.08);transform:translateY(-2px)}
.prov-guide .pg-head{display:flex;align-items:center;gap:12px;padding:18px 24px;border-bottom:1px solid #f1f5f9}
.prov-guide .pg-logo{width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:14px}
.prov-guide .pg-head b{font-size:15px;font-weight:700}
.prov-guide .pg-head .pg-tag{margin-left:auto;font-size:11px;color:var(--muted);background:#f1f5f9;padding:4px 12px;border-radius:20px;font-weight:500}
.prov-guide .pg-body{padding:20px 24px}
.prov-guide .pg-body ol{margin:0;padding-left:20px}
.prov-guide .pg-body li{color:var(--muted);font-size:13px;line-height:2;margin-bottom:2px}
.prov-guide .pg-body li b{color:var(--text)}
.prov-guide .pg-body .cred{display:flex;gap:10px;align-items:center;margin-top:10px;padding:10px 14px;background:linear-gradient(135deg,#f8fafc,#f1f5f9);border-radius:8px;font-size:12px}
.prov-guide .pg-body .cred span{color:var(--muted)}
.prov-guide .pg-body .cred b{color:var(--primary);font-family:Consolas,monospace;font-size:12px}

.flow-row{display:flex;align-items:center;justify-content:center;gap:0;flex-wrap:wrap;margin-top:8px}
.flow-node{background:#fff;border:1px solid #f1f5f9;border-radius:14px;padding:20px 28px;text-align:center;min-width:150px;transition:.3s}
.flow-node:hover{box-shadow:0 8px 28px rgba(15,23,42,.08);transform:translateY(-3px);border-color:transparent}
.flow-node .fn-ic{font-size:28px;margin-bottom:10px}
.flow-node b{font-size:14px;font-weight:700;display:block;margin-bottom:2px}
.flow-node span{font-size:11px;color:var(--muted)}
.flow-arrow{color:#cbd5e1;font-size:22px;padding:0 10px}

.lfoot{background:#0a0e27;color:#64748b;text-align:center;padding:52px 24px}
.lfoot-inner{max-width:1140px;margin:0 auto}
.lfoot-brand{display:flex;align-items:center;gap:8px;justify-content:center;margin-bottom:12px;color:#fff;font-size:17px;font-weight:700}
.lfoot p{margin-bottom:4px;font-size:14px}
.lfoot-tech{color:#475569;font-size:12px}

@media(max-width:760px){
  .sidebar{width:64px}.sidebar .brand span,.sidebar nav a span,.sidebar .foot{display:none}.main{margin-left:64px}.form-grid{grid-template-columns:1fr}
  .hero h1{font-size:36px}.lnav-links a[href]{display:none}.flow-arrow{display:none}
  .hero-cta{flex-direction:column;align-items:center}
}