/*! 由 ./zh/smtp/index.html 内联 <style> 原样提取，勿手改（保持视觉一致） */

*{margin:0;padding:0;box-sizing:border-box}
:root{
    --primary:#87CEEB;
    --primary-dark:#4682B4;
    --bg:#f0f5ff;
    --card:#fff;
    --text:#1a1a2e;
    --gray:#888;
    --radius:14px;
    --gap-sm:8px;
    --gap-md:16px;
    --gap-lg:24px;
    --padding-sm:12px;
    --padding-md:20px;
    --padding-lg:30px;
    --alert-bg:#003366;
    --elastic-out: cubic-bezier(0.34, 1.56, 0.64, 1);
    --elastic-soft: cubic-bezier(0.22, 1, 0.36, 1);
    --smooth: cubic-bezier(0.65, 0, 0.35, 1);
    --z-nav:100;--z-content:1;
    --card-shadow:0 8px 24px rgba(135,206,235,0.4);--card-shadow-hover:0 12px 36px rgba(135,206,235,0.5);
}

/* ===== 背景装饰 ===== */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(135,206,235,0.10), transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(70,130,180,0.06), transparent 50%);
  z-index: 0;
  animation: bgDrift 14s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes bgDrift {
  0%   { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.04); opacity: 1; }
}

body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
    background:var(--bg);
    color:var(--text);
    min-height:100vh;
    display:flex;
    flex-direction:column;
    position:relative;
}
main{flex:1;display:flex;flex-direction:column;}

/* ===== 导航栏 ===== */
.navbar{
    background:var(--primary);padding:10px 0;
    box-shadow:0 2px 10px rgba(0,0,0,0.1);
    position:sticky;top:0;z-index:var(--z-nav);width:100%;
    height:60px;display:flex;align-items:center;
    opacity:0;transform:translateY(-100%);
    animation:navSlideIn 0.7s var(--elastic-soft) 0.15s forwards;
}
@keyframes navSlideIn{to{opacity:1;transform:translateY(0);}}
@keyframes fadeSlideUp{to{opacity:1;transform:translateY(0);}}
.nav-container{
    max-width:1200px;margin:0 auto;
    display:flex;justify-content:space-between;align-items:center;
    padding:0 var(--padding-sm);width:100%;
}
.logo{
    font-size:clamp(1.1rem,4vw,1.4rem);
    font-weight:bold;color:var(--primary-dark);
    text-decoration:none;
    transition:transform 0.35s var(--elastic-out);
}
.logo:hover{transform:scale(1.06);}
.nav-links{display:flex;gap:clamp(10px,3vw,18px);min-width:0;flex-shrink:0;}
.nav-links a{
    color:var(--primary-dark);font-weight:500;
    text-decoration:none;
    font-size:clamp(0.85rem,3vw,0.95rem);
    position:relative;padding-bottom:4px;
    transition:color 0.3s ease;
    opacity:0;transform:translateY(-6px);
    animation:fadeSlideUp 0.45s var(--elastic-soft) forwards;
}
.nav-links a:nth-child(1){animation-delay:0.2s;}
.nav-links a:nth-child(2){animation-delay:0.3s;}
.nav-links a:nth-child(3){animation-delay:0.4s;}
.nav-links a::after {
  content:'';position:absolute;bottom:0;left:0;width:0;height:2px;
  background:var(--primary-dark);border-radius:2px;transition:width 0.35s var(--elastic-out);
}
.nav-links a:hover::after,
.nav-links a.active::after {width:100%;}

/* ===== 页面容器 ===== */
.page-wrapper{
    flex:1;display:flex;flex-direction:column;align-items:center;
    justify-content:center;padding:var(--padding-md) var(--padding-sm);
    position:relative;z-index:var(--z-content,1);
}
.container{
    max-width:700px;width:100%;
    display:flex;flex-direction:column;
    align-items:center;gap:var(--gap-lg);
}

/* ===== 页脚 ===== */
footer{
    text-align:center;padding:var(--padding-md);
    background:var(--primary);color:var(--primary-dark);
    font-size:14px;width:100%;
    opacity:0;animation:footerIn 0.8s ease 0.6s forwards;
}
@keyframes footerIn{to{opacity:1;}}
.card{
    max-width:480px;
    width:100%;
    background:var(--card);
    border-radius:var(--radius);
    padding:28px 24px;
    box-shadow:var(--card-shadow, 0 4px 20px rgba(0,0,0,.06));
    animation:cardIn .4s cubic-bezier(.34,1.56,.64,1);
    transition:box-shadow 0.4s ease, transform 0.4s ease;
}
.card:hover {
  box-shadow:var(--card-shadow-hover, 0 8px 30px rgba(0,0,0,.12));
  transform:translateY(-2px);
}
@keyframes cardIn{0%{opacity:0;transform:translateY(20px) scale(.96)}100%{opacity:1;transform:translateY(0) scale(1)}}
.card h2{text-align:center;font-size:20px;font-weight:600;margin-bottom:4px}
.card .sub{text-align:center;font-size:13px;color:var(--gray);margin-bottom:20px}

.steps{display:flex;justify-content:center;gap:8px;margin-bottom:22px}
.step{
    width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    font-size:13px;font-weight:600;background:#e8e8e8;color:#999;transition:all .35s cubic-bezier(.34,1.56,.64,1)
}
.step.act{
    background:var(--primary);color:#fff;
    box-shadow:0 2px 12px rgba(75,170,255,.4);
    animation:stepPop .45s cubic-bezier(.34,1.56,.64,1)
}
.step.ok{
    background:#2ecc71;color:#fff;
    animation:stepPop .45s cubic-bezier(.34,1.56,.64,1)
}
@keyframes stepPop{
    0%{transform:scale(1)}
    50%{transform:scale(1.25)}
    100%{transform:scale(1)}
}
.step-line{width:40px;height:2px;align-self:center;background:#e8e8e8;transition:background .35s cubic-bezier(.34,1.56,.64,1)}
.step-line.ok{background:#2ecc71}

.step-panel{display:none}
.step-panel.act{display:block;animation:panelIn .4s cubic-bezier(.34,1.56,.64,1)}
@keyframes panelIn{
    0%{opacity:0;transform:translateX(30px) scale(.97)}
    100%{opacity:1;transform:translateX(0) scale(1)}
}
.step-panel.act.out{animation:panelOut .3s cubic-bezier(.34,1.56,.64,1)}
@keyframes panelOut{
    0%{opacity:1;transform:translateX(0) scale(1)}
    100%{opacity:0;transform:translateX(-20px) scale(.97)}
}

.form-item{margin-bottom:16px}
.form-item label{display:block;font-size:14px;font-weight:500;margin-bottom:6px}
.form-item input,.form-item textarea{
    width:100%;padding:11px 13px;border:1px solid #d9d9d9;border-radius:10px;
    font-size:15px;outline:none;transition:border-color .2s,transform .15s;font-family:inherit
}
.form-item input:focus,.form-item textarea:focus{border-color:var(--primary);box-shadow:0 0 0 2px rgba(75,170,255,.15);transform:scale(1.01)}
.form-item input:disabled{background:#f5f5f5;color:#999}
.form-item textarea{resize:vertical;height:120px}
.code-row{display:flex;gap:10px}
.code-row input{flex:1}
.code-row .btn{width:140px;flex-shrink:0}
.btn{
    display:inline-flex;align-items:center;justify-content:center;
    padding:11px 20px;border:none;border-radius:10px;
    font-size:15px;font-weight:500;cursor:pointer;transition:all .2s cubic-bezier(.34,1.56,.64,1);
    position:relative;overflow:hidden
}
.btn:active{transform:scale(.96)}
.btn-primary{background:var(--primary);color:#fff;width:100%}
.btn-primary:hover{background:#3694ff;transform:translateY(-1px);box-shadow:0 4px 12px rgba(75,170,255,.3)}
.btn-primary:disabled{background:#c0c0c0;cursor:not-allowed;transform:none;box-shadow:none}
.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:#f0f7ff;transform:translateY(-1px)}
.btn-row{display:flex;gap:10px;margin-top:8px}
.btn-row .btn{flex:1}
.tip{font-size:13px;color:var(--gray);margin-top:6px}
.avatar-box{display:flex;align-items:center;gap:12px;margin-top:10px;min-height:50px}
.avatar-box img{
    width:48px;height:48px;border-radius:50%;border:2px solid #eee;display:none;
    animation:fadeIn .3s cubic-bezier(.34,1.56,.64,1)
}
.avatar-box span{font-size:14px;color:var(--gray);display:none}
@keyframes fadeIn{0%{opacity:0;transform:scale(.8)}100%{opacity:1;transform:scale(1)}}
.file-item{
    display:flex;align-items:center;gap:10px;padding:10px 12px;
    background:#f7f9fc;border-radius:10px;margin-bottom:8px;
    animation:fileIn .3s cubic-bezier(.34,1.56,.64,1)
}
@keyframes fileIn{0%{opacity:0;transform:translateX(-10px)}100%{opacity:1;transform:translateX(0)}}
.file-item .name{flex:1;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-item .size{font-size:12px;color:var(--gray)}
.file-item .del{
    width:24px;height:24px;border-radius:50%;border:none;background:#e74c3c;color:#fff;
    cursor:pointer;font-size:14px;display:flex;align-items:center;justify-content:center;
    transition:transform .2s
}
.file-item .del:hover{transform:scale(1.2)}
.add-file-btn{
    display:flex;align-items:center;justify-content:center;gap:6px;
    padding:10px;border:2px dashed #d9d9d9;border-radius:10px;cursor:pointer;
    font-size:14px;color:var(--gray);transition:all .2s
}
.add-file-btn:hover{border-color:var(--primary);color:var(--primary);background:#f8fbff}
.msg-box{
    margin-top:14px;padding:11px 15px;border-radius:10px;
    font-size:14px;line-height:1.5;display:none;text-align:center;word-break:break-all
}
.msg-box.succ{
    display:block;background:#e8f8ee;color:#1a7a3a;border:1px solid #b8ebcc;
    animation:msgPop .35s cubic-bezier(.34,1.56,.64,1)
}
.msg-box.err{
    display:block;background:#fef2f2;color:#c0392b;border:1px solid #f5c6cb;
    animation:msgPop .35s cubic-bezier(.34,1.56,.64,1)
}
@keyframes msgPop{0%{opacity:0;transform:scale(.92)}100%{opacity:1;transform:scale(1)}}
.overlay{
    display:none;position:fixed;top:0;left:0;width:100%;height:100%;
    background:rgba(0,0,0,.45);z-index:99999;
    align-items:center;justify-content:center;flex-direction:column;gap:14px;
    color:#fff;font-size:15px
}
.overlay.show{display:flex;animation:overIn .25s ease}
@keyframes overIn{0%{opacity:0}100%{opacity:1}}
.spin{
    width:26px;height:26px;border:3px solid rgba(255,255,255,.3);
    border-top:3px solid #fff;border-radius:50%;animation:spin .7s linear infinite
}
@keyframes spin{to{transform:rotate(360deg)}}
.char-count{text-align:right;font-size:12px;color:var(--gray);margin-top:4px}

/* success burst */
.success-wrap{text-align:center;padding:20px 0}
.success-check{
    width:64px;height:64px;border-radius:50%;background:#2ecc71;
    display:flex;align-items:center;justify-content:center;margin:0 auto 14px;
    animation:checkBounce .6s cubic-bezier(.34,1.56,.64,1)
}
.success-check svg{width:32px;height:32px;stroke:#fff;stroke-width:3;fill:none;stroke-linecap:round;stroke-linejoin:round}
.success-check .ck{stroke-dasharray:30;stroke-dashoffset:30;animation:drawCheck .4s .2s ease forwards}
@keyframes checkBounce{0%{transform:scale(0) rotate(-30deg)}60%{transform:scale(1.15) rotate(5deg)}100%{transform:scale(1) rotate(0)}}
@keyframes drawCheck{to{stroke-dashoffset:0}}
.success-msg{font-size:16px;font-weight:600;color:#1a7a3a;animation:fadeIn .3s .3s both}
.success-sub{font-size:13px;color:var(--gray);margin-top:6px;animation:fadeIn .3s .4s both}
.confetti{
    position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:99999;overflow:hidden
}
.confetti span{
    position:absolute;width:8px;height:8px;border-radius:2px;
    top:-10px;animation:confettiFall linear forwards
}
@keyframes confettiFall{
    0%{transform:translateY(0) rotate(0);opacity:1}
    100%{transform:translateY(110vh) rotate(720deg);opacity:0}
}

/* 内联 style="" 提取（保持原有高优先级） */
[data-css="sc1"]{width:140px !important}
[data-css="sc2"]{display:none !important;font-size:12px !important;color:#e74c3c !important;text-align:center !important;margin-bottom:8px !important}
[data-css="sc3"]{color:var(--gray) !important;font-weight:400 !important}
[data-css="sc4"]{color:var(--gray) !important;font-weight:400 !important}
[data-css="sc5"]{display:none !important}
[data-css="sc6"]{color:var(--primary) !important}