:root{
    --p1:#6a11cb;
    --p2:#a020f0;
    --p3:#d81b8f;
    --p4:#ff4ecd;
    --ink:#25123f;
    --muted:#8a7fa0;
    --line:#ece7f4;
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{width:100%;min-height:100%}
body{
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
    background:linear-gradient(135deg,#3b0764 0%,#6a11cb 40%,#c2158f 100%);
    color:var(--ink);
    overflow-x:hidden;
}
.login-container{display:flex;width:100%;min-height:100vh;min-height:100dvh}

/* ============ 左侧 AI 流动背景 ============ */
.left-panel{
    flex:1.15;position:relative;overflow:hidden;
    display:flex;align-items:center;justify-content:center;
    background:radial-gradient(120% 120% at 15% 15%,#4c0f7a 0%,#2a0645 45%,#12021f 100%);
    isolation:isolate;
}
#bg-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:2}

.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.65;z-index:1;mix-blend-mode:screen;will-change:transform}
.blob.b1{width:46vw;height:46vw;background:radial-gradient(circle,#8b1bff 0%,rgba(139,27,255,0) 70%);top:-8%;left:-10%;animation:float1 18s ease-in-out infinite}
.blob.b2{width:40vw;height:40vw;background:radial-gradient(circle,#ff2ec4 0%,rgba(255,46,196,0) 70%);bottom:-12%;right:-8%;animation:float2 22s ease-in-out infinite}
.blob.b3{width:32vw;height:32vw;background:radial-gradient(circle,#2ee6ff 0%,rgba(46,230,255,0) 70%);top:45%;left:35%;opacity:.35;animation:float3 26s ease-in-out infinite}
@keyframes float1{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(14%,18%) scale(1.18)}}
@keyframes float2{0%,100%{transform:translate(0,0) scale(1.1)}50%{transform:translate(-16%,-14%) scale(.9)}}
@keyframes float3{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(-18%,12%) scale(1.2)}66%{transform:translate(12%,-16%) scale(.95)}}

.grid-plane{
    position:absolute;left:-25%;right:-25%;bottom:-10%;height:70%;
    z-index:1;opacity:.35;
    background-image:linear-gradient(rgba(255,120,255,.35) 1px,transparent 1px),
    linear-gradient(90deg,rgba(180,120,255,.28) 1px,transparent 1px);
    background-size:60px 60px;
    transform:perspective(340px) rotateX(62deg);
    transform-origin:bottom center;
    animation:gridmove 6s linear infinite;
    mask-image:linear-gradient(to top,#000 5%,transparent 85%);
    -webkit-mask-image:linear-gradient(to top,#000 5%,transparent 85%);
}
@keyframes gridmove{to{background-position:0 60px,60px 0}}

.scanline{
    position:absolute;inset:0;z-index:3;pointer-events:none;
    background:linear-gradient(180deg,transparent 0%,rgba(255,255,255,.06) 48%,rgba(255,255,255,.14) 50%,rgba(255,255,255,.06) 52%,transparent 100%);
    background-size:100% 220%;
    animation:scan 8s linear infinite;mix-blend-mode:screen;
}
@keyframes scan{0%{background-position:0 -120%}100%{background-position:0 220%}}

.cursor-glow{
    position:absolute;width:420px;height:420px;border-radius:50%;z-index:3;pointer-events:none;
    background:radial-gradient(circle,rgba(255,110,220,.28) 0%,rgba(140,60,255,.14) 40%,transparent 70%);
    transform:translate(-50%,-50%);left:50%;top:50%;
    transition:opacity .4s ease;opacity:0;mix-blend-mode:screen;
}
.left-panel:hover .cursor-glow{opacity:1}

.left-content{
    position:relative;z-index:5;text-align:center;color:#fff;padding:8vh 8%;
    transform-style:preserve-3d;transition:transform .25s ease-out;
}
.logo-orb{
    width:96px;height:96px;margin:0 auto 26px;border-radius:26px;padding:12px;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,rgba(255,255,255,.22),rgba(255,255,255,.05));
    border:1px solid rgba(255,255,255,.35);
    box-shadow:0 0 40px rgba(255,80,220,.5),inset 0 0 24px rgba(255,255,255,.18);
    backdrop-filter:blur(8px);
    animation:orbPulse 3.6s ease-in-out infinite;
}
.logo-orb img{
    width:100%;height:100%;object-fit:contain;display:block;
    filter:drop-shadow(0 3px 10px rgba(0,0,0,.3));
}
@keyframes orbPulse{0%,100%{transform:translateY(0);box-shadow:0 0 34px rgba(255,80,220,.45),inset 0 0 20px rgba(255,255,255,.15)}50%{transform:translateY(-9px);box-shadow:0 0 62px rgba(180,80,255,.7),inset 0 0 28px rgba(255,255,255,.25)}}
.left-content h1{
    font-size:clamp(2rem,4.4vw,3.5rem);font-weight:800;letter-spacing:2px;line-height:1.25;
    background:linear-gradient(92deg,#ffffff 0%,#ffc2f4 35%,#b98bff 68%,#ffffff 100%);
    background-size:220% 100%;
    -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
    animation:shine 6s linear infinite;
    text-shadow:0 0 40px rgba(255,120,240,.25);
}
@keyframes shine{to{background-position:220% 0}}
.left-content h2{
    margin-top:16px;font-size:clamp(1rem,1.7vw,1.45rem);font-weight:500;letter-spacing:3px;
    color:rgba(255,255,255,.9);
}
.left-content h2 .hl{
    background:linear-gradient(90deg,#ff9ae8,#8ad8ff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:700;
}
.site-link{
    display:inline-flex;align-items:center;gap:10px;margin-top:30px;padding:12px 26px;
    border-radius:40px;font-size:1rem;letter-spacing:2px;color:#fff;text-decoration:none;
    background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.28);
    backdrop-filter:blur(10px);transition:.35s cubic-bezier(.2,.8,.2,1);
    box-shadow:0 8px 26px rgba(0,0,0,.25);
}
.site-link:hover{background:rgba(255,255,255,.2);transform:translateY(-4px) scale(1.04);box-shadow:0 14px 34px rgba(255,60,200,.35);letter-spacing:3px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:34px}
.tag{
    font-size:.8rem;color:rgba(255,255,255,.85);padding:7px 14px;border-radius:30px;
    background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);
    transition:.3s ease;backdrop-filter:blur(6px);
}
.tag:hover{transform:translateY(-3px);background:rgba(255,255,255,.18);color:#fff;border-color:rgba(255,255,255,.45)}

/* 微信提示条 */
.wechat-tip{
    display:inline-flex;align-items:center;gap:10px;margin-top:20px;padding:11px 22px;
    border-radius:34px;font-size:.9rem;font-weight:600;letter-spacing:.5px;color:#fff;
    background:linear-gradient(90deg,rgba(7,193,96,.32),rgba(255,255,255,.08));
    border:1px solid rgba(120,255,180,.38);backdrop-filter:blur(8px);
    box-shadow:0 8px 24px rgba(0,0,0,.22);
    animation:tipGlow 3.2s ease-in-out infinite;
}
.wechat-tip i{font-size:1.1rem;color:#8affc0}
@keyframes tipGlow{
    0%,100%{box-shadow:0 8px 24px rgba(0,0,0,.22),0 0 0 rgba(7,193,96,0)}
    50%{box-shadow:0 8px 24px rgba(0,0,0,.22),0 0 26px rgba(7,193,96,.45)}
}

/* ============ 右侧登录（纯净白底 + 少量紫红点缀） ============ */
.right-panel{
    flex:1;background:#ffffff;display:flex;align-items:center;justify-content:center;
    padding:48px 28px;position:relative;overflow:hidden;
    box-shadow:-20px 0 60px rgba(30,0,60,.28);
}
.right-panel::before{
    content:'';position:absolute;top:0;left:0;right:0;height:4px;z-index:6;
    background:linear-gradient(90deg,var(--p1),var(--p2),var(--p3),var(--p4),var(--p2),var(--p1));
    background-size:300% 100%;animation:barflow 8s linear infinite;
}
@keyframes barflow{to{background-position:300% 0}}

/* 两处极淡角落光雾 */
.r-glow{position:absolute;border-radius:50%;filter:blur(70px);z-index:0;pointer-events:none}
.r-glow.g1{width:300px;height:300px;top:-120px;right:-110px;background:radial-gradient(circle,rgba(216,27,143,.16) 0%,rgba(216,27,143,0) 70%);animation:g1m 18s ease-in-out infinite}
.r-glow.g2{width:260px;height:260px;bottom:-110px;left:-100px;background:radial-gradient(circle,rgba(106,17,203,.14) 0%,rgba(106,17,203,0) 70%);animation:g2m 22s ease-in-out infinite}
@keyframes g1m{0%,100%{transform:translate(0,0)}50%{transform:translate(-26px,32px)}}
@keyframes g2m{0%,100%{transform:translate(0,0)}50%{transform:translate(30px,-26px)}}

/* 少量上浮小光点 */
.r-dots{position:absolute;inset:0;z-index:1;pointer-events:none;overflow:hidden}
.rp{position:absolute;bottom:-10px;border-radius:50%;opacity:0;animation:rise-p linear infinite}
@keyframes rise-p{
    0%{transform:translateY(0);opacity:0}
    15%{opacity:.7}
    75%{opacity:.35}
    100%{transform:translateY(-105vh);opacity:0}
}

.login-card{position:relative;z-index:5;width:100%;max-width:420px;animation:rise .7s cubic-bezier(.2,.8,.2,1) both}
@keyframes rise{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}

.card-header{margin-bottom:24px}
.brand-badge{
    display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:600;
    padding:6px 13px;border-radius:30px;color:#fff;
    background:linear-gradient(90deg,var(--p1),var(--p3));
    box-shadow:0 6px 16px rgba(160,32,240,.26);
}
.brand-badge img{width:16px;height:16px;object-fit:contain;display:block}
.card-header h2{font-size:1.85rem;font-weight:800;margin-top:16px;letter-spacing:1px;color:var(--ink)}
.card-header p{margin-top:8px;font-size:.9rem;color:var(--muted)}

.tab-nav{display:flex;gap:26px;margin:24px 0 22px;border-bottom:1px solid var(--line)}
.tab-item{
    position:relative;cursor:pointer;font-size:.93rem;font-weight:600;color:#a294b8;
    padding-bottom:12px;transition:color .3s ease;white-space:nowrap;
}
.tab-item:hover{color:var(--p2)}
.tab-item.active{color:var(--ink)}
.tab-item::after{
    content:'';position:absolute;left:0;bottom:-1px;height:3px;width:0;border-radius:3px;
    background:linear-gradient(90deg,var(--p2),var(--p4));transition:width .35s cubic-bezier(.2,.8,.2,1);
}
.tab-item.active::after{width:100%}

/* 错误提示 */
.form-error{
    display:none;align-items:center;gap:8px;margin-bottom:16px;padding:11px 14px;
    border-radius:10px;font-size:.85rem;color:#c2215e;
    background:rgba(216,27,143,.08);border:1px solid rgba(216,27,143,.28);
}
.form-error.show{display:flex}
.form-error i{color:var(--p3)}

.form-group{position:relative;margin-bottom:16px;display:flex;align-items:center}
.input-icon{position:absolute;left:16px;font-size:1rem;color:#b6a9c9;transition:.3s ease;pointer-events:none}
.form-control{
    width:100%;padding:15px 16px 15px 46px;font-size:.95rem;color:var(--ink);
    background:#faf8fc;border:1.6px solid #ece6f5;border-radius:12px;outline:none;transition:.3s ease;
}
.form-control::placeholder{color:#b3a7c4}
.form-control:hover{border-color:#dcd0ee}
.form-group:focus-within .form-control{background:#fff;border-color:var(--p2);box-shadow:0 0 0 4px rgba(160,32,240,.12)}
.form-group:focus-within .input-icon{color:var(--p2);transform:scale(1.08)}

.has-code .form-control{padding-right:126px}
.has-eye .form-control{padding-right:48px}
.has-code.has-eye .form-control{padding-right:160px}
.toggle-password{position:absolute;right:132px;cursor:pointer;color:#b6a9c9;font-size:.95rem;transition:.25s;padding:6px}
.has-eye:not(.has-code) .toggle-password{right:14px}
.toggle-password:hover{color:var(--p2)}
.btn-send-code{
    position:absolute;right:6px;height:38px;padding:0 14px;border:none;border-radius:9px;cursor:pointer;
    font-size:.82rem;font-weight:700;color:#fff;letter-spacing:.5px;
    background:linear-gradient(90deg,var(--p1),var(--p3));
    box-shadow:0 4px 12px rgba(160,32,240,.28);transition:.25s ease;
}
.btn-send-code:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 7px 18px rgba(216,27,143,.38)}
.btn-send-code:disabled{background:#e8e2f0;color:#a99cbb;box-shadow:none;cursor:not-allowed}

.form-extra{display:flex;align-items:center;justify-content:space-between;margin:4px 0 20px;font-size:.85rem}
.remember{display:flex;align-items:center;gap:8px;color:#7c6f92;cursor:pointer;user-select:none}
.remember input{appearance:none;width:17px;height:17px;border:1.6px solid #d6cbe6;border-radius:5px;cursor:pointer;position:relative;transition:.2s}
.remember input:checked{background:linear-gradient(135deg,var(--p2),var(--p4));border-color:transparent}
.remember input:checked::after{content:'\2713';position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#fff;font-size:.72rem;font-weight:700}
.link{color:var(--p2);text-decoration:none;font-weight:600;transition:.25s}
.link:hover{color:var(--p3);text-decoration:underline}

.btn-submit{
    position:relative;overflow:hidden;width:100%;padding:15px;border:none;border-radius:12px;cursor:pointer;
    font-size:1rem;font-weight:700;letter-spacing:3px;color:#fff;
    background:linear-gradient(90deg,var(--p1),var(--p2) 45%,var(--p3) 75%,var(--p4));
    background-size:200% 100%;background-position:0 0;
    box-shadow:0 10px 26px rgba(140,20,200,.3);transition:.4s cubic-bezier(.2,.8,.2,1);
}
.btn-submit:hover{background-position:100% 0;transform:translateY(-3px);box-shadow:0 16px 34px rgba(216,27,143,.4)}
.btn-submit:active{transform:translateY(0) scale(.99)}
.btn-submit:disabled{opacity:.75;cursor:not-allowed;transform:none}
.btn-submit::after{
    content:'';position:absolute;top:0;left:-60%;width:40%;height:100%;
    background:linear-gradient(100deg,transparent,rgba(255,255,255,.45),transparent);
    transform:skewX(-20deg);animation:sweep 3.4s ease-in-out infinite;
}
@keyframes sweep{0%{left:-60%}55%,100%{left:130%}}

.divider{display:flex;align-items:center;gap:14px;margin:24px 0 16px;color:#b3a7c4;font-size:.78rem}
.divider::before,.divider::after{content:'';flex:1;height:1px;background:linear-gradient(90deg,transparent,rgba(160,32,240,.22),transparent)}
.social-row{display:flex;gap:12px;justify-content:center}
.social{
    width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
    font-size:1.1rem;color:#8b7ba3;background:#faf8fc;border:1.4px solid #ece6f5;cursor:pointer;transition:.3s cubic-bezier(.2,.8,.2,1);
}
.social:hover{color:#fff;transform:translateY(-5px) rotate(-6deg);background:linear-gradient(135deg,var(--p1),var(--p3));border-color:transparent;box-shadow:0 10px 22px rgba(160,32,240,.3)}

.qrcode-container{display:none;text-align:center;padding:6px 0 4px}
.qrcode-box{
    width:186px;height:186px;margin:0 auto 18px;padding:12px;border-radius:18px;background:#fff;
    border:1.6px solid var(--line);box-shadow:0 12px 30px rgba(90,20,140,.12);position:relative;overflow:hidden;transition:.35s ease;
}
.qrcode-box:hover{transform:scale(1.04);box-shadow:0 18px 40px rgba(216,27,143,.26);border-color:#e9d6f5}
.qrcode-box::after{
    content:'';position:absolute;left:8%;right:8%;height:3px;border-radius:3px;top:10%;
    background:linear-gradient(90deg,transparent,var(--p4),transparent);
    box-shadow:0 0 14px var(--p4);animation:qrscan 2.4s ease-in-out infinite;
}
@keyframes qrscan{0%,100%{top:8%}50%{top:88%}}
.qrcode-box img{width:100%;height:100%;object-fit:contain;display:block}
.qr-mask{
    position:absolute;inset:0;display:none;flex-direction:column;align-items:center;justify-content:center;gap:8px;
    background:rgba(255,255,255,.94);z-index:2;
}
.qr-mask.show{display:flex}
.qr-mask i{font-size:2.2rem;color:#1eae72}
.qr-mask span{font-size:.85rem;color:var(--muted)}
.qr-refresh{
    margin-top:4px;padding:7px 16px;border:none;border-radius:8px;cursor:pointer;
    font-size:.82rem;font-weight:700;color:#fff;
    background:linear-gradient(90deg,var(--p1),var(--p3));
    box-shadow:0 4px 12px rgba(160,32,240,.28);
}
.qrcode-container p{font-size:.88rem;color:var(--muted)}

.security-tips{margin-top:22px;display:flex;align-items:center;justify-content:center;gap:7px;font-size:.79rem;color:#a294b8}
.security-tips i{color:#1eae72}
.footer-note{margin-top:10px;text-align:center;font-size:.74rem;color:#c8bed6}

/* ============ 响应式 ============ */
@media (max-width:960px){
    .login-container{flex-direction:column}
    .left-panel{flex:none;min-height:52vh;padding:60px 0 50px}
    .right-panel{flex:none;box-shadow:0 -24px 50px rgba(30,0,60,.3);border-radius:28px 28px 0 0;margin-top:-28px;z-index:10;padding:38px 20px 44px}
    .blob{filter:blur(52px)}
    .left-content{padding:0 7%}
    .logo-orb{width:74px;height:74px;padding:9px;margin-bottom:18px;border-radius:20px}
    .site-link{margin-top:22px;padding:10px 22px;font-size:.9rem}
    .tag-row{margin-top:22px}
    .wechat-tip{margin-top:16px;padding:10px 18px;font-size:.82rem}
    .r-glow{filter:blur(56px)}
}
@media (max-width:420px){
    .tab-nav{gap:16px}
    .tab-item{font-size:.85rem}
    .card-header h2{font-size:1.55rem}
    .has-code .form-control{padding-right:116px}
    .toggle-password{right:120px}
    .tag{font-size:.72rem;padding:6px 11px}
    .wechat-tip{font-size:.76rem;padding:9px 15px;line-height:1.4}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}