@charset "utf-8";
/* ============================================================
   知识付费 · 单屏认证页样式（登录 / 注册 / 订单查询）
   设计要点（对标精品站规范）：
     · 单屏聚焦，表单居中，四周大留白，不做下方长内容
     · 按钮状态分层：未填完整 → 置灰禁用；填完 → 品牌高亮
     · 输入框配线性图标 + 占位/已输入文字色阶
     · 错误提示内联在输入框下方（红字 + 图标），不用弹窗打断
     · 进场错峰动效，prefers-reduced-motion 自动降级
     · 移动端单栏、90% 宽、触控区 ≥44px
   ============================================================ */

:root{
  --au-p1:#FF7A45;
  --au-p2:#FF4D4F;
  --au-grad:linear-gradient(135deg,#FF7A45 0%,#FF4D4F 100%);
  --au-grad-soft:linear-gradient(135deg,rgba(255,122,69,.10) 0%,rgba(255,77,79,.10) 100%);
  --au-ink:#0F172A;
  --au-ink2:#5B6478;
  --au-ink3:#98A2B3;
  --au-line:#E9EDF3;
  --au-bg:#F4F6FB;
  --au-card:#FFFFFF;
  --au-r:26px;
  --au-rs:12px;
  --au-sh:0 18px 48px rgba(15,23,42,.10);
  --au-sh-h:0 26px 60px rgba(255,77,79,.22);
  --au-ease:cubic-bezier(.22,.8,.28,1);
  --au-ease-out:cubic-bezier(.16,1,.3,1);
}

body.au-body{
  margin:0; min-height:100vh;
  background:
    radial-gradient(880px 520px at 12% -8%,rgba(255,122,69,.15),transparent 62%),
    radial-gradient(720px 460px at 90% 104%,rgba(255,213,79,.16),transparent 64%),
    var(--au-bg);
  color:var(--au-ink);
  font-family:"Microsoft Yahei","PingFang SC","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  font-size:15px; line-height:1.7;
  -webkit-font-smoothing:antialiased;
  display:flex; flex-direction:column;
}
body.au-body a{ transition:color .2s var(--au-ease), background .2s var(--au-ease), border-color .2s var(--au-ease), transform .2s var(--au-ease); }

/* 背景极淡网格，增强质感但不抢主体 */
body.au-body::before{
  content:""; position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(15,23,42,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(15,23,42,.028) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 76%);
          mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 76%);
}

/* ==================== 顶栏 ==================== */
.au-top{
  position:relative; z-index:2;
  height:72px; padding:0 26px;
  display:flex; align-items:center; gap:12px;
}
.au-top .au-logo{ height:34px; width:auto; display:block; }
.au-top .au-name{ font-size:18px; font-weight:800; letter-spacing:2px; }
.au-top .au-spacer{ flex:1 1 auto; }
.au-top-links{ display:flex; align-items:center; gap:8px; }
.au-top-links a{
  text-decoration:none; font-size:14px; font-weight:700; color:var(--au-ink2);
  padding:9px 18px; border-radius:999px;
}
.au-top-links a:hover{ color:var(--au-p2); background:var(--au-grad-soft); }
.au-top-links a.au-solid{
  color:#fff; background:var(--au-grad); box-shadow:0 8px 20px rgba(255,77,79,.26);
}
.au-top-links a.au-solid:hover{ color:#fff; transform:translateY(-2px); box-shadow:var(--au-sh-h); }

/* ==================== 主体：单屏居中 ==================== */
/* 关键：用 auto 外边距做垂直居中，而不是 justify-content:center。
   后者在内容高于视口时会上下同时溢出，顶部被裁且无法滚动到（"显示不全"的成因）。 */
.au-main{
  position:relative; z-index:1;
  flex:1 1 auto; display:flex; flex-direction:column;
  align-items:center; justify-content:flex-start;
  padding:8px 22px 34px;
}
.au-main > .au-card,
.au-main > .au-shell{ margin-top:auto; margin-bottom:auto; }
.au-card{
  width:100%; max-width:920px;
  display:flex; align-items:stretch;
  background:var(--au-card); border-radius:var(--au-r);
  box-shadow:var(--au-sh); overflow:hidden;
  border:1px solid rgba(233,237,243,.9);
}

/* ---------- 左：品牌区 ---------- */
.au-brand{
  position:relative; overflow:hidden;
  flex:0 0 44%; padding:46px 42px;
  background:var(--au-grad); color:#fff;
  display:flex; flex-direction:column;
}
.au-brand::before{
  content:""; position:absolute; inset:0; pointer-events:none; opacity:.16;
  background-image:
    linear-gradient(rgba(255,255,255,.35) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:34px 34px;
}
.au-brand::after{
  content:""; position:absolute; right:-90px; bottom:-110px;
  width:260px; height:260px; border-radius:50%;
  background:rgba(255,255,255,.10);
}
.au-brand > *{ position:relative; z-index:1; }

.au-eyebrow{
  display:inline-flex; align-items:center; gap:8px; align-self:flex-start;
  padding:6px 14px; border-radius:999px;
  background:rgba(255,255,255,.16); border:1px solid rgba(255,255,255,.30);
  font-size:12px; font-weight:800; letter-spacing:2.5px;
}
.au-eyebrow i{ width:6px; height:6px; border-radius:50%; background:#fff; display:block; }
/* logo-mark.svg 本身即为彩色底设计的玻璃拟态标（含金色 ¥ 徽标），不可再反色 */
.au-mark{ height:46px; width:auto; margin-bottom:22px; }
.au-h1{
  margin:0 0 12px; font-size:40px; font-weight:900; line-height:1.24; letter-spacing:1px;
}
.au-en{
  margin:0 0 16px; font-size:13.5px; line-height:1.75;
  color:rgba(255,255,255,.80); font-style:italic; letter-spacing:.3px;
}
.au-sub{ margin:0 0 24px; font-size:15px; line-height:1.9; color:rgba(255,255,255,.94); }
.au-sub b{ font-weight:800; }
.au-modes{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:auto; }
.au-mode{
  font-size:12.5px; font-weight:700; padding:6px 13px; border-radius:999px;
  background:rgba(255,255,255,.16); border:1px solid rgba(255,255,255,.30); color:#fff;
}
.au-trust{
  margin-top:26px; padding-top:18px; border-top:1px solid rgba(255,255,255,.20);
  display:flex; flex-wrap:wrap; gap:6px 18px;
  font-size:12.5px; color:rgba(255,255,255,.86);
}
.au-trust span{ display:inline-flex; align-items:center; gap:6px; }
.au-trust span::before{
  content:"✓"; font-weight:800; color:#fff;
}

/* ---------- 右：表单区 ---------- */
.au-form{
  flex:1 1 auto; padding:46px 46px 38px;
  display:flex; flex-direction:column; justify-content:center;
  background:var(--au-card);
  position:relative;
}
/* 卡片底层极淡渐变，避免纯白呆板 */
.au-form::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:150px; pointer-events:none;
  background:linear-gradient(180deg,rgba(255,122,69,0) 0%,rgba(255,122,69,.045) 100%);
}
.au-form > *{ position:relative; z-index:1; }
.au-form h2{
  margin:0 0 6px; font-size:26px; font-weight:800; letter-spacing:1px; text-align:center;
}
.au-form .au-sub2{
  margin:0 0 26px; text-align:center; font-size:13.5px; color:var(--au-ink3);
}

/* 表单字段 */
.au-field{ display:block; margin-bottom:16px; }
.au-field > label{
  display:block; font-size:13px; font-weight:700; color:var(--au-ink2); margin-bottom:7px; letter-spacing:.4px;
}
.au-input{
  position:relative; display:flex; align-items:center;
  border:1.5px solid var(--au-line); border-radius:var(--au-rs);
  background:#FBFCFE; transition:border-color .2s var(--au-ease), box-shadow .2s var(--au-ease), background .2s var(--au-ease);
}
.au-input:hover{ border-color:#DDE3ED; }
.au-input:focus-within{
  background:#fff; border-color:var(--au-p1); box-shadow:0 0 0 4px rgba(255,122,69,.13);
}
.au-input > svg{
  flex:0 0 auto; width:19px; height:19px; margin-left:15px;
  color:var(--au-ink3); transition:color .2s var(--au-ease);
}
.au-input:focus-within > svg{ color:var(--au-p1); }
.au-input input{
  flex:1 1 auto; min-width:0;
  height:50px; padding:0 14px 0 11px; border:0; background:none; outline:none;
  font-size:15px; font-weight:600; color:var(--au-ink);
}
.au-input input::placeholder{ color:#B3BBC9; font-weight:400; }
.au-eye{
  flex:0 0 auto; width:44px; height:44px; margin-right:2px;
  border:0; background:none; cursor:pointer; padding:0;
  display:flex; align-items:center; justify-content:center;
  color:var(--au-ink3); border-radius:8px; transition:color .2s var(--au-ease), background .2s var(--au-ease);
}
.au-eye:hover{ color:var(--au-p2); background:var(--au-grad-soft); }
.au-eye svg{ width:18px; height:18px; }
.au-eye .au-eye-off{ display:none; }
.au-eye.on .au-eye-on{ display:none; }
.au-eye.on .au-eye-off{ display:block; }

/* 内联错误提示 */
.au-err{
  display:none; margin-top:6px; font-size:12.5px; color:#E03131; line-height:1.6;
  align-items:center; gap:5px;
}
.au-err.show{ display:flex; }
.au-err::before{
  content:"!"; flex:0 0 auto; width:15px; height:15px; border-radius:50%;
  background:#E03131; color:#fff; font-size:10.5px; font-weight:800;
  display:flex; align-items:center; justify-content:center; line-height:1;
}
.au-field.bad .au-input{ border-color:#E03131; box-shadow:0 0 0 4px rgba(224,49,49,.10); }
.au-field.bad .au-input > svg{ color:#E03131; }

/* 辅助行 */
.au-row{
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  margin:2px 0 22px; font-size:13px;
}
.au-check{ display:inline-flex; align-items:center; gap:8px; color:var(--au-ink2); cursor:pointer; user-select:none; }
.au-check input{
  width:17px; height:17px; margin:0; accent-color:var(--au-p2); cursor:pointer;
}
.au-row a{ color:var(--au-ink2); text-decoration:none; font-weight:600; }
.au-row a:hover{ color:var(--au-p2); }

/* 主按钮：状态分层 */
.au-submit{
  width:100%; height:52px; border:0; border-radius:999px;
  background:var(--au-grad); color:#fff; font-size:16px; font-weight:700; letter-spacing:3px;
  cursor:pointer; box-shadow:0 12px 26px rgba(255,77,79,.28);
  transition:transform .2s var(--au-ease), box-shadow .2s var(--au-ease), filter .2s var(--au-ease), opacity .2s var(--au-ease);
}
.au-submit:hover:not(:disabled){ transform:translateY(-2px); box-shadow:var(--au-sh-h); }
.au-submit:active:not(:disabled){ transform:translateY(0); }
.au-submit:disabled{
  background:#D8DEE8; color:#fff; cursor:not-allowed; box-shadow:none; opacity:.9;
}
.au-submit.loading{
  pointer-events:none; color:transparent; position:relative;
}
.au-submit.loading::after{
  content:""; position:absolute; left:50%; top:50%; width:20px; height:20px; margin:-10px 0 0 -10px;
  border:2.5px solid rgba(255,255,255,.35); border-top-color:#fff; border-radius:50%;
  animation:au-spin .7s linear infinite;
}
@keyframes au-spin{ to{ transform:rotate(360deg); } }

.au-alt{
  margin:18px 0 0; text-align:center; font-size:13.5px; color:var(--au-ink3);
}
.au-alt a{ color:var(--au-p2); font-weight:800; text-decoration:none; }
.au-alt a:hover{ color:var(--au-p1); }

.au-note{
  margin:18px 0 0; padding:12px 14px; border-radius:var(--au-rs);
  background:#FFF9F5; border:1px dashed rgba(255,122,69,.30);
  font-size:12.5px; color:var(--au-ink2); line-height:1.8;
}
.au-note b{ color:var(--au-p2); }
.au-note.err{
  background:#FFF5F5; border-color:rgba(224,49,49,.28); color:#B42318;
}
.au-note.err b{ color:#E03131; }

/* 密码强度条 */
.au-strength{ display:flex; gap:5px; margin:-8px 0 14px; }
.au-strength i{ flex:1 1 0; height:4px; border-radius:3px; background:#E9EDF3; transition:background .25s var(--au-ease); }
.au-strength.s1 i:nth-child(1){ background:#FF7875; }
.au-strength.s2 i:nth-child(-n+2){ background:#FFA751; }
.au-strength.s3 i:nth-child(-n+3){ background:#FFD54F; }
.au-strength.s4 i{ background:#52C41A; }
.au-strength-txt{ font-size:12px; color:var(--au-ink3); margin:-10px 0 12px; min-height:16px; }

/* ==================== 页脚细条 ==================== */
.au-foot{
  position:relative; z-index:1;
  padding:16px 22px 26px; text-align:center;
  font-size:12.5px; color:var(--au-ink3); line-height:1.9;
}
.au-foot a{ color:var(--au-p2); text-decoration:none; font-weight:700; }
.au-foot a:hover{ color:var(--au-p1); }

/* ==================== 进场动效（错峰） ====================
   安全要点：绝不用 opacity:0 作为元素的初始态 + forwards 填充。
   一旦 animation 因任何原因未执行（浏览器禁用动画 / var() 失效 / 被中断），
   元素会永久隐形 —— 表现为"页面只剩背景、内容全没了"。
   正确写法：元素默认可见，靠 animation 的 backwards 填充在 delay 期间隐藏，
   动画不执行时内容照常显示。 */
.au-anim{ animation:au-in .62s var(--au-ease-out) both; }
.au-anim.d1{ animation-delay:.06s; }
.au-anim.d2{ animation-delay:.12s; }
.au-anim.d3{ animation-delay:.18s; }
.au-anim.d4{ animation-delay:.24s; }
.au-anim.d5{ animation-delay:.30s; }
@keyframes au-in{ from{ opacity:0; transform:translateY(14px); } to{ opacity:1; transform:translateY(0); } }
@media (prefers-reduced-motion: reduce){
  .au-anim{ animation:none; opacity:1 !important; transform:none !important; }
  .au-submit.loading::after{ animation-duration:2s; }
  *{ transition-duration:.01ms !important; }
}

/* ==================== 视频背景版（登录 / 注册 / 订单查询） ==================== */
body.au-vpage{ background:#0B1020; overflow-x:hidden; }
body.au-vpage::before{ display:none; }

/* 全屏视频底：显式写四边，不依赖 inset 新语法（老浏览器不支持时尺寸会失控） */
.au-vbg{
  position:fixed; top:0; right:0; bottom:0; left:0;
  z-index:0; overflow:hidden; background:#0B1020; pointer-events:none;
}
.au-vbg video{
  width:100%; height:100%; object-fit:cover; object-position:center center;
  display:block; transform:scale(1.03);
}
/* 双层遮罩：左侧压深保证文案可读，右侧留亮让视频透出来 */
.au-vbg-mask{
  position:absolute; inset:0; pointer-events:none;
  background:
    linear-gradient(100deg,rgba(8,12,26,.93) 0%,rgba(8,12,26,.78) 34%,rgba(8,12,26,.40) 58%,rgba(8,12,26,.55) 100%),
    radial-gradient(1100px 620px at 16% 44%,rgba(255,122,69,.20),transparent 62%);
}
/* 顶栏（视频版用深色玻璃） */
body.au-vpage .au-top{ position:relative; z-index:20; }
body.au-vpage .au-top .au-name{ color:#fff; }
body.au-vpage .au-top-links a{ color:rgba(255,255,255,.82); }
body.au-vpage .au-top-links a:hover{ color:#fff; background:rgba(255,255,255,.14); }
body.au-vpage .au-top-links a.au-solid{
  color:#fff; background:var(--au-grad); box-shadow:0 8px 20px rgba(255,77,79,.34);
}

/* 主体两栏：左文案压视频，右表单实心卡 */
body.au-vpage .au-main{ padding:0 26px 44px; justify-content:center; position:relative; z-index:10; }
.au-shell{
  position:relative; z-index:2;
  width:100%; max-width:1180px; margin:0 auto;
  display:grid; grid-template-columns:1.06fr 430px; gap:64px; align-items:center;
}

/* 左：介绍区（直接压在视频上） */
.au-hero{ color:#fff; max-width:560px; }
.au-hero .au-eyebrow{
  background:rgba(255,255,255,.14); border-color:rgba(255,255,255,.30); color:#fff;
}
.au-hero .au-mark{ height:52px; margin-bottom:20px; }
.au-hero .au-h1{
  font-size:52px; line-height:1.16; margin:0 0 14px;
  text-shadow:0 4px 26px rgba(0,0,0,.38);
}
.au-hero .au-en{
  color:rgba(255,255,255,.72); margin:0 0 18px;
  text-shadow:0 2px 14px rgba(0,0,0,.35);
}
.au-hero .au-sub{
  color:rgba(255,255,255,.94); margin:0 0 24px; font-size:15.5px;
  text-shadow:0 2px 16px rgba(0,0,0,.40);
}
.au-hero .au-sub b{ font-weight:800; }

/* 付费分享介绍：四步 */
.au-steps{ list-style:none; margin:0 0 22px; padding:0; }
.au-steps li{
  display:flex; align-items:flex-start; gap:12px;
  padding:11px 0; border-top:1px solid rgba(255,255,255,.16);
}
.au-steps li:first-child{ border-top:0; }
.au-steps .n{
  flex:0 0 24px; height:24px; border-radius:50%;
  background:rgba(255,255,255,.16); border:1px solid rgba(255,255,255,.28);
  color:#fff; font-size:12px; font-weight:800;
  display:flex; align-items:center; justify-content:center; margin-top:1px;
}
.au-steps b{ display:block; font-size:14.5px; font-weight:800; margin-bottom:2px; }
.au-steps span{ font-size:13px; color:rgba(255,255,255,.80); line-height:1.6; }

/* 右：实心表单卡 */
body.au-vpage .au-form{
  border-radius:26px; padding:40px 40px 32px;
  box-shadow:0 30px 80px rgba(0,0,0,.45);
  border:1px solid rgba(255,255,255,.35);
  backdrop-filter:blur(2px);
}
body.au-vpage .au-form::after{ display:none; }
body.au-vpage .au-foot{
  position:relative; z-index:2; color:rgba(255,255,255,.55);
}
body.au-vpage .au-foot a{ color:#FFB08A; }
body.au-vpage .au-foot a:hover{ color:#fff; }

/* 视频控制小钮 */
.au-vbg-ctrl{
  position:fixed; right:18px; bottom:18px; z-index:6; display:flex; gap:8px;
}
.au-vbg-ctrl button{
  width:38px; height:38px; border-radius:50%;
  border:1px solid rgba(255,255,255,.26); background:rgba(11,16,32,.5);
  backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
  color:#fff; cursor:pointer; padding:0;
  display:flex; align-items:center; justify-content:center;
  transition:background .2s var(--au-ease), transform .2s var(--au-ease);
}
.au-vbg-ctrl button:hover{ background:rgba(255,77,79,.60); transform:translateY(-2px); }
.au-vbg-ctrl svg{ width:15px; height:15px; }
.au-vbg-ctrl .ic-play{ display:none; }
.au-vbg-ctrl.paused .ic-play{ display:block; }
.au-vbg-ctrl.paused .ic-pause{ display:none; }

/* 窄版外壳（订单查询等工具页用）：同样受移动端断点约束 */
.au-shell.narrow{ max-width:1000px; }
@media (max-width:1000px){
  .au-shell.narrow{ max-width:520px; }
}

@media (max-width:1000px){
  .au-shell{ grid-template-columns:1fr; gap:22px; max-width:520px; }
  .au-hero{ max-width:none; text-align:center; }
  .au-hero .au-eyebrow{ align-self:center; }
  .au-hero .au-mark{ height:42px; margin-bottom:14px; }
  .au-hero .au-h1{ font-size:32px; margin-bottom:10px; }
  .au-hero .au-en{ display:none; }
  .au-hero .au-sub{ font-size:13.5px; margin-bottom:14px; line-height:1.75; }
  .au-steps{ text-align:left; max-width:440px; margin:0 auto 14px; }
  .au-steps li{ padding:7px 0; }
  .au-steps span{ font-size:12.5px; }
  .au-modes{ justify-content:center; margin-bottom:4px; }
  body.au-vpage .au-main{ padding:0 14px 30px; }
  body.au-vpage .au-form{ padding:28px 22px 24px; }
  body.au-vpage .au-top{ height:auto; padding:12px 16px; }
  body.au-vpage .au-top .au-name{ font-size:16px; }
}
@media (max-width:600px){
  .au-hero .au-h1{ font-size:27px; }
  .au-hero .au-sub{ font-size:13px; }
  .au-hero .au-sub br{ display:none; }
  .au-steps li{ padding:6px 0; }
  .au-vbg-ctrl{ right:12px; bottom:12px; }
}
/* ==================== 响应式（卡片版） ==================== */
@media (max-width:900px){
  .au-main{ padding:4px 14px 24px; }
  .au-card{ max-width:460px; flex-direction:column; }
  .au-brand{ flex:0 0 auto; padding:30px 26px 26px; }
  .au-h1{ font-size:30px; }
  .au-en{ display:none; }
  .au-sub{ font-size:14px; margin-bottom:18px; }
  .au-trust{ margin-top:18px; padding-top:14px; }
  .au-form{ padding:30px 24px 26px; }
  .au-top{ height:62px; padding:0 16px; }
  .au-top .au-name{ font-size:16px; }
}
@media (max-width:600px){
  .au-main{ justify-content:flex-start; padding-top:10px; }
  .au-card{ border-radius:20px; }
  .au-brand{ padding:26px 20px 22px; }
  .au-h1{ font-size:26px; }
  .au-sub{ font-size:13.5px; }
  .au-mark{ height:38px; margin-bottom:16px; }
  .au-form{ padding:26px 20px 22px; }
  .au-form h2{ font-size:22px; }
  .au-input input{ height:48px; }
  .au-submit{ height:50px; }
  .au-top-links a{ padding:8px 12px; font-size:13px; }
  .au-top-links a.au-solid{ display:none; }
}