/* ============================================================
   闪电云 · 注册页组件库  registration-components.css
   风格：简约商务 ｜ 两端通用（Web 桌面端 + 移动端 H5）
   主色与闪电云官网品牌一致：#3d6ef0 → #5b8cff 渐变
   用法：<link rel="stylesheet" href="registration-components.css">
   ============================================================ */

:root {
  /* 品牌色 */
  --sd-primary: #3d6ef0;
  --sd-primary-2: #5b8cff;
  --sd-primary-bg: #eef4ff;
  --sd-primary-border: #d6e4ff;

  /* 中性色 */
  --sd-bg: #f4f7fc;
  --sd-card: #ffffff;
  --sd-text: #16233c;
  --sd-text-2: #4a5b7a;
  --sd-text-3: #6b7fa5;
  --sd-placeholder: #9fb0cc;
  --sd-border: #e6edf8;
  --sd-border-2: #c9d8f7;

  /* 功能色 */
  --sd-error: #e5484d;
  --sd-success: #27ae60;
  --sd-warning: #f5a623;

  /* 圆角：只有可点的东西才是圆的 */
  --sd-radius-s: 6px;
  --sd-radius-m: 8px;
  --sd-radius-l: 12px;

  /* 尺寸 */
  --sd-input-h: 48px;
  --sd-font: -apple-system, BlinkMacSystemFont, "PingFang SC",
             "Microsoft YaHei", "Segoe UI", sans-serif;
  --sd-shadow-btn: 0 6px 20px rgba(61, 110, 240, 0.22);
}

/* ---------- 表单容器（两端通用，桌面端限宽居中） ---------- */
.sd-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  box-sizing: border-box;
}

/* ---------- 字段组 ---------- */
.sd-field { display: flex; flex-direction: column; gap: 6px; }

/* ---------- 标签 ---------- */
.sd-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--sd-text);
  line-height: 1.4;
}
.sd-label .req { color: var(--sd-error); margin-left: 2px; }
.sd-label .opt {
  font-size: 12px;
  font-weight: 400;
  color: var(--sd-placeholder);
  margin-left: 6px;
}

/* ---------- 输入框 ---------- */
.sd-input-wrap { position: relative; width: 100%; }

.sd-input {
  width: 100%;
  height: var(--sd-input-h);
  padding: 0 14px;
  box-sizing: border-box;
  font-family: var(--sd-font);
  font-size: 14px;
  color: var(--sd-text);
  background: var(--sd-card);
  border: 1px solid var(--sd-border);
  border-radius: var(--sd-radius-m);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.sd-input::placeholder { color: var(--sd-placeholder); }
.sd-input:hover:not(:disabled):not(.is-error):not(.is-success) { border-color: var(--sd-border-2); }
.sd-input:focus {
  border-color: var(--sd-primary);
  box-shadow: 0 0 0 3px rgba(61, 110, 240, 0.12);
}
.sd-input:disabled {
  background: #f2f4f8;
  color: #b7c4de;
  cursor: not-allowed;
}

/* 前缀（区号 / 图标） */
.sd-input-prefix {
  position: absolute;
  left: 14px;
  top: 0;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--sd-text);
  pointer-events: none;
}
.sd-input-prefix::after {
  content: "";
  width: 1px;
  height: 24px;
  background: var(--sd-border-2);
}
.sd-input--prefix { padding-left: 70px; }

/* 后缀（眼睛 / 选填 / 图标按钮） */
.sd-input-suffix {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--sd-placeholder);
  pointer-events: none;
}
.sd-input--suffix { padding-right: 44px; }

/* 状态：错误 / 成功 */
.sd-input.is-error {
  border-color: var(--sd-error);
  box-shadow: 0 0 0 3px rgba(229, 72, 77, 0.12);
}
.sd-input.is-error:focus { border-color: var(--sd-error); }
.sd-input.is-success {
  border-color: var(--sd-success);
  box-shadow: 0 0 0 3px rgba(39, 174, 96, 0.12);
}
.sd-input.is-success:focus { border-color: var(--sd-success); }

/* 辅助 / 错误提示文字 */
.sd-hint { font-size: 12px; color: var(--sd-text-3); line-height: 1.5; }
.sd-hint--error { color: var(--sd-error); }
.sd-hint--success { color: var(--sd-success); }

/* ---------- 验证码按钮（输入框内嵌） ---------- */
.sd-code-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  height: 32px;
  padding: 0 14px;
  font-family: var(--sd-font);
  font-size: 13px;
  font-weight: 600;
  color: var(--sd-primary);
  background: var(--sd-primary-bg);
  border: 1px solid var(--sd-primary-border);
  border-radius: var(--sd-radius-m);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}
.sd-code-btn:hover { background: #e2ecff; }
.sd-code-btn:disabled {
  color: var(--sd-placeholder);
  background: #f2f4f8;
  border-color: var(--sd-border);
  cursor: not-allowed;
}
.sd-input--code { padding-right: 108px; }

/* ---------- 下拉选择器 ---------- */
.sd-select {
  position: relative;
  width: 100%;
}
.sd-select__box {
  width: 100%;
  height: var(--sd-input-h);
  padding: 0 14px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--sd-font);
  font-size: 14px;
  color: var(--sd-text);
  background: var(--sd-card);
  border: 1px solid var(--sd-border);
  border-radius: var(--sd-radius-m);
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.sd-select__box:hover { border-color: var(--sd-border-2); }
.sd-select.open .sd-select__box {
  border-color: var(--sd-primary);
  box-shadow: 0 0 0 3px rgba(61, 110, 240, 0.12);
}
.sd-select__arrow { transition: transform 0.2s; color: var(--sd-placeholder); }
.sd-select.open .sd-select__arrow { transform: rotate(180deg); color: var(--sd-primary); }

.sd-select__panel {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 6px);
  background: var(--sd-card);
  border: 1px solid var(--sd-border);
  border-radius: var(--sd-radius-m);
  box-shadow: 0 10px 30px rgba(22, 35, 60, 0.10);
  overflow: hidden;
  z-index: 10;
}
.sd-select__item {
  padding: 12px 14px;
  font-size: 14px;
  color: var(--sd-text);
  cursor: pointer;
  transition: background 0.12s;
}
.sd-select__item:hover { background: var(--sd-primary-bg); }
.sd-select__item.on {
  color: var(--sd-primary);
  font-weight: 600;
  background: var(--sd-primary-bg);
}

/* ---------- 复选框（协议勾选） ---------- */
.sd-checkbox {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  color: var(--sd-text-3);
  line-height: 1.5;
  cursor: pointer;
  user-select: none;
}
.sd-checkbox input { position: absolute; opacity: 0; width: 0; height: 0; }
.sd-checkbox__box {
  flex: none;
  width: 18px;
  height: 18px;
  border: 1px solid var(--sd-border-2);
  border-radius: 4px;
  background: var(--sd-card);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.12s, border-color 0.12s;
}
.sd-checkbox__box svg { opacity: 0; transform: scale(0.7); transition: opacity 0.12s, transform 0.12s; }
.sd-checkbox input:checked + .sd-checkbox__box {
  background: var(--sd-primary);
  border-color: var(--sd-primary);
}
.sd-checkbox input:checked + .sd-checkbox__box svg { opacity: 1; transform: scale(1); }
.sd-checkbox input:focus-visible + .sd-checkbox__box {
  box-shadow: 0 0 0 3px rgba(61, 110, 240, 0.12);
}
.sd-checkbox input:disabled + .sd-checkbox__box {
  background: #f2f4f8;
  border-color: var(--sd-border);
}
.sd-checkbox a { color: var(--sd-primary); text-decoration: none; }
.sd-checkbox a:hover { text-decoration: underline; }

/* ---------- 按钮 ---------- */
.sd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 24px;
  box-sizing: border-box;
  font-family: var(--sd-font);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--sd-radius-m);
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s, background 0.15s, opacity 0.15s;
}
.sd-btn--primary {
  width: 100%;
  color: #fff;
  background: linear-gradient(135deg, var(--sd-primary), var(--sd-primary-2));
  box-shadow: var(--sd-shadow-btn);
}
.sd-btn--primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(61, 110, 240, 0.30); }
.sd-btn--primary:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(61, 110, 240, 0.20); }
.sd-btn--primary:disabled {
  background: #c3d0ea;
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

.sd-btn--secondary {
  width: 100%;
  color: var(--sd-primary);
  background: var(--sd-card);
  border: 1px solid var(--sd-border-2);
}
.sd-btn--secondary:hover { background: var(--sd-primary-bg); border-color: var(--sd-primary-border); }
.sd-btn--secondary:disabled {
  color: #b7c4de;
  background: #f7f9fc;
  border-color: var(--sd-border);
  cursor: not-allowed;
}

/* 加载态 */
.sd-btn--loading { pointer-events: none; opacity: 0.85; }
.sd-btn--loading::before {
  content: "";
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: sd-spin 0.7s linear infinite;
}
.sd-btn--secondary.sd-btn--loading::before {
  border-color: rgba(61, 110, 240, 0.25);
  border-top-color: var(--sd-primary);
}
@keyframes sd-spin { to { transform: rotate(360deg); } }

/* ---------- 文字链接 ---------- */
.sd-text-link {
  font-size: 13px;
  color: var(--sd-text-3);
  text-align: center;
}
.sd-text-link a {
  color: var(--sd-primary);
  font-weight: 600;
  text-decoration: none;
  margin-left: 4px;
}
.sd-text-link a:hover { text-decoration: underline; }

/* ---------- 分割线 ---------- */
.sd-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--sd-placeholder);
  font-size: 12px;
  white-space: nowrap;
}
.sd-divider::before,
.sd-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--sd-border);
}

/* ---------- 三方登录 ---------- */
.sd-social {
  display: flex;
  justify-content: center;
  gap: 20px;
}
.sd-social__btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--sd-card);
  border: 1px solid var(--sd-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.sd-social__btn:hover {
  transform: translateY(-2px);
  border-color: var(--sd-border-2);
  box-shadow: 0 6px 16px rgba(22, 35, 60, 0.08);
}
.sd-social__btn svg { width: 24px; height: 24px; }

/* ---------- 密码强度条 ---------- */
.sd-strength {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sd-strength__label { font-size: 13px; color: var(--sd-text-3); }
.sd-strength__label.weak { color: var(--sd-error); }
.sd-strength__label.mid { color: var(--sd-warning); }
.sd-strength__label.strong { color: var(--sd-success); }
.sd-strength__bars { display: flex; gap: 6px; }
.sd-strength__bars i {
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: #e3e9f5;
}
.sd-strength__bars i.on { background: var(--sd-error); }
.sd-strength__bars.mid i.on { background: var(--sd-warning); }
.sd-strength__bars.strong i.on { background: var(--sd-success); }

/* ---------- Toast 提示（悬浮顶部） ---------- */
.sd-toast {
  position: fixed;
  left: 50%;
  top: 24px;
  transform: translateX(-50%) translateY(-16px);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  border-radius: 10px;
  background: #1f2b45;
  color: #fff;
  font-size: 13px;
  font-family: var(--sd-font);
  box-shadow: 0 12px 32px rgba(22, 35, 60, 0.22);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 999;
}
.sd-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.sd-toast .ic {
  flex: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.sd-toast--success .ic { background: var(--sd-success); }
.sd-toast--error .ic { background: var(--sd-error); }

/* ---------- 组装示例（注册卡片） ---------- */
.sd-reg-card {
  background: var(--sd-card);
  border: 1px solid var(--sd-border);
  border-radius: var(--sd-radius-l);
  padding: 32px 28px;
  box-shadow: 0 10px 30px rgba(22, 35, 60, 0.06);
}
.sd-reg-title { font-size: 22px; font-weight: 700; color: var(--sd-text); margin: 0 0 4px; }
.sd-reg-sub { font-size: 13px; color: var(--sd-text-3); margin: 0 0 24px; }

/* 手机端：卡片去边框阴影，贴边 */
@media (max-width: 480px) {
  .sd-reg-card {
    border: none;
    box-shadow: none;
    padding: 8px 4px 24px;
  }
  .sd-form { gap: 16px; }
}

/* ============================================================
   左侧品牌展示区（.sd-promo-panel）—— 浅色版 ·「节点网络」主题
   浅蓝渐变底 + 点阵纹理 + 节点卡片浮动 + 虚线连线流动 + 入场动效
   ============================================================ */
.sd-promo-panel {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  padding: 30px 36px 26px;
  box-sizing: border-box;
  min-height: 500px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  color: var(--sd-text);
  background:
    radial-gradient(1100px 460px at 88% -12%, rgba(61, 110, 240, 0.10), transparent 62%),
    radial-gradient(760px 400px at -6% 112%, rgba(102, 224, 255, 0.16), transparent 60%),
    radial-gradient(rgba(150, 180, 230, 0.22) 1px, transparent 1.4px),
    linear-gradient(160deg, #ffffff 0%, #f3f8ff 100%);
  background-size: auto, auto, 22px 22px, 100% 100%;
  border: 1px solid #e3ecfb;
  box-shadow: 0 10px 30px rgba(22, 35, 60, 0.06);
}

/* 顶部品牌行 */
.lp-head { display: flex; align-items: center; gap: 10px; animation: lp-rise 0.6s ease-out both; }
.lp-logo {
  flex: none; width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--sd-primary), var(--sd-primary-2));
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 18px rgba(61, 110, 240, 0.28);
}
.lp-logo svg { width: 22px; height: 22px; }
.lp-name { font-size: 17px; font-weight: 700; letter-spacing: 0.5px; color: var(--sd-text); }
.lp-badge {
  margin-left: auto; display: flex; align-items: center; gap: 7px;
  background: #fff; border: 1px solid var(--sd-primary-border); border-radius: 999px;
  padding: 7px 14px; font-size: 12px; color: var(--sd-primary); font-weight: 500;
  box-shadow: 0 4px 12px rgba(61, 110, 240, 0.10);
  white-space: nowrap;
  animation: lp-rise 0.6s 0.1s ease-out both;
}
.lp-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--sd-success); animation: lp-blink 1.6s ease-in-out infinite; }

/* 中部：节点网络视觉 + 标题 */
.lp-mid { flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; min-height: 0; }
.lp-visual { position: relative; width: 100%; max-width: 430px; height: 224px; margin: 0 auto 12px; flex: none; }
.lp-lines { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.lp-lines path { fill: none; stroke: #bcd4fa; stroke-width: 1.6; stroke-dasharray: 5 7; animation: lp-line 16s linear infinite; }
.lp-lines path:nth-child(2) { animation-delay: -5s; }
.lp-lines path:nth-child(3) { animation-delay: -10s; }

.lp-core {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 148px; padding: 16px 0 14px; border-radius: 14px; background: #fff;
  border: 1px solid var(--sd-primary-border);
  box-shadow: 0 12px 28px rgba(61, 110, 240, 0.16);
  display: flex; flex-direction: column; align-items: center; gap: 5px;
  animation: lp-pop 0.5s 0.15s cubic-bezier(0.2, 0.9, 0.3, 1.2) both;
}
.lp-core .ic {
  width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(135deg, var(--sd-primary), var(--sd-primary-2));
  display: flex; align-items: center; justify-content: center;
  animation: lp-core-glow 2.6s ease-in-out infinite;
}
.lp-core .ic svg { width: 20px; height: 20px; }
.lp-core b { font-size: 14px; color: var(--sd-text); font-weight: 600; }
.lp-core .st { display: flex; align-items: center; gap: 5px; font-size: 11px; color: var(--sd-text-3); }
.lp-core .st i { width: 6px; height: 6px; border-radius: 50%; background: var(--sd-success); animation: lp-blink 1.8s ease-in-out infinite; }

.lp-card {
  position: absolute; background: #fff; border: 1px solid #dde9fb; border-radius: 10px;
  padding: 8px 12px; box-shadow: 0 8px 20px rgba(61, 110, 240, 0.10);
  text-align: left;
  animation: lp-fade 0.5s ease-out both, lp-float 3.6s ease-in-out infinite;
}
.lp-card b { display: block; font-size: 10.5px; color: var(--sd-placeholder); font-weight: 500; margin-bottom: 2px; }
.lp-card span { font-size: 11.5px; color: var(--sd-text-2); font-weight: 600; white-space: nowrap; }
.lp-card.c1 { left: 4%; top: 14%; animation-delay: 0.25s, 0s; }
.lp-card.c2 { right: 4%; top: 16%; animation-delay: 0.35s, 0.7s; }
.lp-card.c3 { right: 4%; bottom: 8%; animation-delay: 0.45s, 1.4s; }

.lp-title { font-size: 26px; font-weight: 700; letter-spacing: 1px; line-height: 1.4; color: var(--sd-text); animation: lp-rise 0.6s 0.15s ease-out both; }
.lp-title em { font-style: normal; color: var(--sd-primary); }
.lp-sub { color: var(--sd-text-3); font-size: 14px; line-height: 1.9; margin-top: 8px; animation: lp-rise 0.6s 0.25s ease-out both; }

/* 底部：特性标签 */
.lp-tags { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; animation: lp-rise 0.6s 0.35s ease-out both; }
.lp-tag {
  font-size: 13px; color: var(--sd-primary); font-weight: 500;
  background: var(--sd-primary-bg); border: 1px solid var(--sd-primary-border);
  padding: 8px 18px; border-radius: 999px; cursor: default;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}
.lp-tag:hover { transform: translateY(-2px); background: #e2ecff; box-shadow: 0 6px 16px rgba(61, 110, 240, 0.18); }

/* 漂浮光点 */
.lp-dot { position: absolute; border-radius: 50%; pointer-events: none; animation: lp-float 3.5s ease-in-out infinite; }
.lp-dot.d1 { width: 8px; height: 8px; top: 14%; right: 14%; background: rgba(61, 110, 240, 0.35); box-shadow: 0 0 12px rgba(61, 110, 240, 0.35); }
.lp-dot.d2 { width: 6px; height: 6px; top: 58%; left: 7%; background: rgba(102, 224, 255, 0.85); box-shadow: 0 0 12px rgba(102, 224, 255, 0.6); animation-delay: 1.1s; }
.lp-dot.d3 { width: 5px; height: 5px; bottom: 12%; right: 30%; background: rgba(122, 168, 255, 0.7); animation-delay: 2s; }

/* 动效关键帧 */
@keyframes lp-rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@keyframes lp-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
@keyframes lp-blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
@keyframes lp-pop { from { opacity: 0; transform: translate(-50%, -50%) scale(0.82); } to { opacity: 1; transform: translate(-50%, -50%) scale(1); } }
@keyframes lp-line { to { stroke-dashoffset: -240; } }
@keyframes lp-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes lp-core-glow { 0%, 100% { box-shadow: 0 6px 14px rgba(61, 110, 240, 0.30); } 50% { box-shadow: 0 6px 22px rgba(61, 110, 240, 0.55); } }

/* 窄屏收缩 + 动效可关闭 */
@media (max-width: 900px) {
  .sd-promo-panel { min-height: 420px; padding: 24px 22px 22px; }
  .lp-visual { height: 210px; }
}
@media (prefers-reduced-motion: reduce) {
  .sd-promo-panel *, .sd-promo-panel *::before, .sd-promo-panel *::after { animation: none !important; }
}

/* ============================================================
   认证页落地布局(登录/注册/找回密码)
   桌面端:左品牌展示区 + 右表单卡;窄屏(<960px):只保留表单
   依赖:本文件上方组件类;app.css 中旧认证装饰在此覆盖关闭
   ============================================================ */
.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:40px 24px;background:#eef2f9}
/* 关闭旧版认证页的光斑与网格装饰,避免与新卡片重复 */
.auth-page::before,.auth-page::after{display:none}
/* 外层一体化卡片:左右无缝拼合,边框/圆角/阴影只在外层出现一次;
   整体宽度收窄至 900px,并将输入框高度统一降为 44px,避免整体过大 */
.auth-wrap{width:100%;max-width:900px;--sd-input-h:44px;display:grid;grid-template-columns:minmax(0,0.74fr) minmax(0,1.26fr);gap:0;align-items:stretch;background:#fff;border:1px solid var(--sd-border);border-radius:14px;overflow:hidden;box-shadow:0 12px 34px rgba(22,35,60,.08)}
.auth-promo{min-height:0;padding:22px 20px 18px;border-radius:0}
/* 左栏收窄后的紧凑化:头部缩小间距 */
.auth-promo .lp-head{gap:8px}
.auth-promo .lp-name{font-size:15px}
/* 本地 logo:去掉蓝色方底与阴影,直接展示圆形渐变图标 */
.auth-promo .lp-logo{width:40px;height:40px;border-radius:50%;background:none;box-shadow:none}
.auth-promo .lp-logo img{width:100%;height:100%;object-fit:contain}
/* 中心节点图标同样换用本地 logo */
.auth-promo .lp-core .ic{background:none;box-shadow:none}
.auth-promo .lp-core .ic img{width:100%;height:100%;object-fit:contain}
/* 节点视觉:不再整体缩放(缩放会导致连线变细、节点与卡片重叠);
   高度按 360x180 的比例自适应,保证连线端点与卡片坐标始终对齐 */
.auth-promo .lp-visual{height:auto;aspect-ratio:360/180;margin:0 auto 4px;max-width:360px}
/* 连线加深加粗:半透明主色、2px 粗虚线,在浅色背景上清晰可见 */
.auth-promo .lp-lines path{stroke:rgba(61,110,240,.55);stroke-width:2;stroke-dasharray:6 6}
/* 中心节点收紧尺寸,给连线让出可见空隙;整体收窄后宽度再压至 100px */
.auth-promo .lp-core{width:100px;padding:10px 0 9px;gap:3px}
.auth-promo .lp-core .ic{width:28px;height:28px}
.auth-promo .lp-core b{font-size:12.5px}
.auth-promo .lp-core .st{font-size:10px}
/* 三张信息卡重新锚定到新连线端点,整体缩小时内边距与字号再收紧 */
.auth-promo .lp-card{padding:6px 9px}
.auth-promo .lp-card span{font-size:10.5px}
.auth-promo .lp-card.c1{left:3%;top:10%}
.auth-promo .lp-card.c2{right:3%;top:6%}
.auth-promo .lp-card.c2 span{font-size:10px}
.auth-promo .lp-card.c3{right:4%;bottom:6%}
.auth-promo .lp-title{font-size:19px;margin-bottom:6px}
.auth-promo .lp-sub{font-size:12.5px;line-height:1.8;margin-bottom:12px}
.auth-promo .lp-tags{gap:8px}
.auth-promo .lp-tag{font-size:12px;padding:6px 15px}

/* 右侧表单区:不再单独成卡,与左栏共用外层卡片,中间无缝;内边距收紧 */
.auth-form-card{position:relative;background:#fff;border:none;border-radius:0;padding:28px 28px 20px;box-shadow:none;display:flex;flex-direction:column}
.auth-home{position:absolute;top:20px;right:22px;width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--sd-text-3);background:#f4f7fc;transition:color .2s,background .2s}
.auth-home:hover{color:var(--sd-primary);background:var(--sd-primary-bg)}

/* 登录方式分段切换 */
.auth-seg{display:flex;gap:22px;border-bottom:1px solid var(--sd-border);margin-bottom:14px}
.auth-seg button{padding:7px 2px;font-size:14px;font-weight:600;color:var(--sd-text-3);border-bottom:2px solid transparent;margin-bottom:-1px;transition:color .15s,border-color .15s}
.auth-seg button.on{color:var(--sd-primary);border-bottom-color:var(--sd-primary)}

.auth-title{font-size:22px;font-weight:700;color:var(--sd-text);margin:0 0 5px}
.auth-sub{font-size:12.5px;color:var(--sd-text-3);margin:0 0 16px}
.auth-form{display:flex;flex-direction:column;gap:12px}
#regExtra,#resetExtra{display:flex;flex-direction:column;gap:12px}

/* 邀请码右侧「选填」标记 */
.auth-opt-tag{font-size:11.5px;font-weight:400}

/* 忘记密码 */
.auth-forgot{text-align:right;font-size:12.5px;margin-top:-2px}
.auth-forgot a{color:var(--sd-primary);font-weight:600;cursor:pointer}

/* 协议区:链接换行分组 + 勾选 */
.auth-agree{display:flex;flex-direction:column;gap:8px}
.auth-agree-links{display:flex;flex-wrap:wrap;gap:2px 11px}
.auth-agree-links a{font-size:12px;line-height:1.85;color:var(--sd-text-2);cursor:pointer}
.auth-agree-links a:hover{color:var(--sd-primary)}

/* 图形验证码:输入框与图片并排;图片高度随输入框降为 44px */
.auth-captcha-wrap{display:flex;gap:9px}
.auth-captcha-input{flex:1}
.auth-captcha-img{width:114px;height:44px;object-fit:cover;border:1px solid var(--sd-border);border-radius:var(--sd-radius-m);cursor:pointer;background:#f4f7fc;flex:none}

/* 提交按钮:高度随整体降为 44px,字号收紧 */
#btnSubmit{height:44px;font-size:14px}
/* 提交按钮加载态(类由 JS 控制,旋转图标复用 sd-spin) */
#btnSubmit.is-loading{pointer-events:none;opacity:.9}
#btnSubmit.is-loading::before{content:"";width:15px;height:15px;margin-right:7px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:sd-spin .7s linear infinite}

/* 底部注册引导与版权 */
.auth-switch{text-align:center;font-size:12.5px;color:var(--sd-text-3);margin-top:14px}
.auth-switch a{color:var(--sd-primary);font-weight:600;cursor:pointer;margin-left:4px}
.auth-copy{text-align:center;font-size:11px;line-height:1.75;color:var(--sd-text-3);margin-top:auto;padding-top:12px}
.auth-copy a{color:inherit}

/* 密码强度条:三段细条,弱红/中黄/强绿 */
.strength{display:flex;gap:6px;margin-top:-4px}
.strength i{flex:1;height:4px;border-radius:2px;background:#e6edf8;transition:background .2s}
.strength.weak i:nth-child(1){background:#e5484d}
.strength.mid i:nth-child(-n+2){background:#f5a623}
.strength.strong i{background:#27ae60}

/* 平板/手机:隐藏品牌区,表单居中;手机端卡片贴边全屏 */
@media (max-width:960px){
  .auth-wrap{grid-template-columns:1fr;max-width:460px}
  .auth-promo{display:none}
  .auth-form-card{padding:28px 22px}
}
@media (max-width:480px){
  .auth-page{padding:0}
  .auth-wrap{border:none;border-radius:0;box-shadow:none;min-height:100vh}
  .auth-form-card{border:none;border-radius:0;box-shadow:none;min-height:100vh}
}