/* 登录/注册页 —— 与官网一致的 Solvio 风格：深蓝夜幕品牌区 + 白色表单区 */
:root{
  --blue:#3b82f6; --blue-d:#2563eb; --violet:#8b5cf6; --cyan:#22d3ee;
  --ink:#0b1220; --ink2:#1e293b; --dim:#64748b; --dim2:#94a3b8;
  --line:#e2e8f0; --gray:#f6f8fb;
  --sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:var(--sans);color:var(--ink2);font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{text-decoration:none}
::selection{background:rgba(59,130,246,.22)}

.auth-shell{display:flex;min-height:100vh}

/* ============ 左侧品牌区（深蓝夜幕） ============ */
.auth-brand-side{flex:1.15;position:relative;background:var(--ink);color:#fff;display:flex;flex-direction:column;justify-content:space-between;padding:48px 56px;overflow:hidden}
.auth-brand-side:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(148,163,184,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.06) 1px,transparent 1px);background-size:52px 52px;mask-image:radial-gradient(ellipse 90% 80% at 50% 20%,#000 30%,transparent 100%);-webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 20%,#000 30%,transparent 100%);pointer-events:none}
.auth-brand-side .glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;pointer-events:none}
.auth-brand-side .g1{width:460px;height:460px;background:rgba(37,99,235,.5);top:-180px;left:-80px}
.auth-brand-side .g2{width:380px;height:380px;background:rgba(139,92,246,.38);bottom:-160px;right:-60px}
.auth-brand-side .g3{width:260px;height:260px;background:rgba(34,211,238,.22);top:34%;right:18%}

.as-brand{position:relative;display:flex;align-items:center;gap:11px;font-weight:700;font-size:17px;color:#fff;letter-spacing:.3px}
.as-brand .mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--blue),var(--violet));display:flex;align-items:center;justify-content:center;font-size:16px;box-shadow:0 6px 16px rgba(37,99,235,.45)}
.as-brand i{font-style:normal;font-size:11px;font-weight:400;color:#8fa2bd;display:block;letter-spacing:2px}

.as-main{position:relative;max-width:460px}
.as-badge{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:#a5f3fc;background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.25);border-radius:999px;padding:5px 15px;margin-bottom:22px;letter-spacing:1.5px}
.as-badge .dot{width:6px;height:6px;border-radius:50%;background:#34d399;box-shadow:0 0 8px #34d399;animation:pulse 2.2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.as-main h1{font-size:34px;line-height:1.3;font-weight:700;letter-spacing:.5px}
.as-main h1 em{font-style:normal;background:linear-gradient(120deg,#7db4ff,#67e8f9 55%,#b7a5fc);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.as-main .as-lead{margin:16px 0 30px;color:#b6c5da;font-size:15px}
.as-feats{list-style:none;display:grid;gap:13px}
.as-feats li{display:flex;gap:11px;align-items:flex-start;font-size:13.5px;color:#c9d6e8}
.as-feats .f-ico{flex-shrink:0;width:22px;height:22px;border-radius:7px;background:rgba(52,211,153,.14);border:1px solid rgba(52,211,153,.3);color:#34d399;font-size:12px;display:flex;align-items:center;justify-content:center;margin-top:2px}
.as-feats b{color:#fff;font-weight:600}
.as-foot{position:relative;font-size:12.5px;color:#7c8db0;display:flex;gap:22px;flex-wrap:wrap}
.as-foot b{color:#c9d6e8;font-weight:600}

/* ============ 右侧表单区 ============ */
.auth-form-side{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--gray);padding:40px 24px;gap:16px}
/* 返回官网：文档流内置于卡片上方，与卡片保持间距不重叠 */
.auth-form-side .back{align-self:flex-start;font-size:13px;color:var(--dim);display:inline-flex;align-items:center;gap:5px;transition:color .15s,transform .15s}
.auth-form-side .back:hover{color:var(--blue-d);transform:translateX(-2px)}
.auth-card{width:100%;max-width:400px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px 32px;box-shadow:0 24px 70px -20px rgba(15,23,42,.14)}
.auth-title{font-size:21px;color:var(--ink);font-weight:700;letter-spacing:.3px}
.auth-sub{font-size:13px;color:var(--dim);margin:6px 0 24px}
.auth-error{background:#fff1f0;border:1px solid #ffccc7;color:#cf1322;border-radius:10px;padding:10px 13px;font-size:13px;margin-bottom:16px}
.auth-ok{background:#f0fdf4;border:1px solid #bbf7d0;color:#15803d;border-radius:10px;padding:10px 13px;font-size:13px;margin-bottom:16px}

.field{margin-bottom:15px}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--ink2);margin-bottom:7px}
.field .input-wrap{position:relative;display:flex;align-items:center}
.field .input-wrap .ico{position:absolute;left:13px;width:17px;height:17px;color:var(--dim2);pointer-events:none}
.field input{width:100%;height:46px;border:1px solid #e3e7ee;border-radius:11px;padding:0 14px 0 40px;font-size:14px;outline:none;transition:border-color .15s,box-shadow .15s;background:#fff;color:var(--ink)}
.field input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(59,130,246,.13)}
.field .hint{font-size:11.5px;color:var(--dim2);margin-top:5px}

.auth-btn{width:100%;height:46px;border:none;border-radius:11px;background:linear-gradient(135deg,var(--blue-d),var(--blue));color:#fff;font-size:15px;font-weight:600;letter-spacing:2px;cursor:pointer;margin-top:6px;box-shadow:0 8px 22px rgba(37,99,235,.32);transition:transform .16s,box-shadow .16s;font-family:inherit}
.auth-btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(37,99,235,.42)}
.auth-btn:active{transform:translateY(0)}

.auth-foot{text-align:center;font-size:13px;color:var(--dim);margin-top:20px}
.auth-foot a{color:var(--blue-d);font-weight:600}
.auth-foot a:hover{text-decoration:underline}

.trial-tip{display:flex;gap:10px;align-items:flex-start;background:linear-gradient(135deg,#eff6ff,#eef2ff);border:1px solid #dbeafe;border-radius:11px;padding:11px 13px;font-size:12.5px;color:#1e40af;margin-bottom:18px;line-height:1.6}
.trial-tip .t-ico{flex-shrink:0;margin-top:1px}

/* 注册方式切换 */
.mode-tabs{display:flex;gap:8px;margin-bottom:16px;background:#f1f5f9;border-radius:10px;padding:4px}
.mode-tab{flex:1;text-align:center;font-size:13.5px;color:var(--dim);padding:8px 0;border-radius:8px;transition:.15s;font-weight:500}
.mode-tab:hover{color:var(--ink2)}
.mode-tab.on{background:#fff;color:var(--ink);font-weight:600;box-shadow:0 1px 4px rgba(15,23,42,.08)}

/* 验证码输入行 */
.code-wrap input{padding-right:112px}
.send-btn{position:absolute;right:5px;top:50%;transform:translateY(-50%);height:36px;border:none;border-radius:8px;background:linear-gradient(135deg,var(--blue-d),var(--blue));color:#fff;font-size:12.5px;padding:0 14px;cursor:pointer;white-space:nowrap;font-family:inherit;transition:opacity .15s}
.send-btn:hover{opacity:.92}
.send-btn:disabled{opacity:.55;cursor:not-allowed}
.field .hint{font-size:11.5px;color:#dc2626;margin-top:5px}
.field .hint:empty{display:none}

.form-side-links{font-size:12.5px;color:var(--dim2);text-align:center}
.form-side-links a{color:var(--dim)}
.form-side-links a:hover{color:var(--blue-d)}

/* ============ 响应式 ============ */
@media (max-width:960px){
  .auth-shell{flex-direction:column}
  .auth-brand-side{flex:none;padding:34px 28px 30px;gap:26px}
  .as-main h1{font-size:24px}
  .as-main .as-lead{margin:10px 0 18px;font-size:13.5px}
  .as-feats li{font-size:12.5px}
  .as-feats li:nth-child(n+4){display:none}
  .as-foot{display:none}
  .auth-form-side{padding:28px 18px 40px}
  .auth-card{padding:26px 22px}
}
@media (max-width:480px){
  .as-badge{font-size:10px;padding:4px 11px}
  .as-main h1{font-size:20px}
}