/*
 * Copyright 2026 Zhang Yanhang. All rights reserved.
 * SPDX-License-Identifier: Apache-2.0
 *
 * Developer: 想吃猫的鱼工作室 (https://xcmdy.top)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/* 全局视觉参照 yy.xcmdy.top：浅灰画布 + 白面板 + 一像素描边 + 小圆角 + 密排字。
   阴影只留给浮层，正文靠描边和留白分层。 */

:root {
  --side-w: 236px;
  --nav-h: 56px;
  --content-max: 1600px;

  --fs-2xs: 10px;
  --fs-xs: 11px;
  --fs-sm: 12px;
  --fs-cap: 13px;
  --fs-md: 14px;
  --fs-lg: 16px;
  --fs-xl: 18px;
  --fs-2xl: 22px;
  --fs-3xl: 26px;

  --pad-card: 20px;
  --pad-btn: 7px 16px;
  --pad-btn-sm: 3px 10px;
  --pad-input: 8px 11px;

  --radius-xs: 3px;
  --radius-sm: 4px;
  --radius: 6px;
  --radius-lg: 8px;
  --radius-xl: 10px;
  --radius-full: 9999px;
  --r-btn: 4px;
  --r-input: 4px;
  --r-card: 8px;

  --bg: #f6f8fc;
  --bg-2: #eef1f7;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --surface-container: #f1f4f9;
  --surface-container-high: #e8edf5;

  --text: #1f1f1f;
  --text-2: #5f6368;
  --text-3: #676d75;
  --text-inverse: #ffffff;

  --border: #e6e9ef;
  --border-2: #dadce0;
  --border-strong: #bdc1c6;
  --border-soft: #eef1f7;

  --primary: #1565d0;
  --primary-hover: #185abc;
  --primary-active: #174ea6;
  --primary-text: #ffffff;
  --primary-container: #d3e3fd;
  --on-primary-container: #0842a0;
  --primary-soft: rgba(26, 115, 232, 0.09);
  --link: #1a73e8;
  --link-hover: #174ea6;

  --success: #1e8e3e;
  --success-bg: #e6f4ea;
  --success-border: #ceead6;
  --success-text: #137333;
  --warning: #b06000;
  --warning-bg: #fef7e0;
  --warning-border: #feefc3;
  --warning-text: #8a4b00;
  --danger: #c5221f;
  --danger-bg: #fce8e6;
  --danger-border: #f6c7c3;
  --danger-text: #c5221f;

  --input-bg: #ffffff;
  --input-border: #dadce0;
  --input-border-hover: #1a73e8;
  --input-text: #1f1f1f;
  --input-placeholder: #676d75;
  --input-focus-ring: rgba(26, 115, 232, 0.16);

  --font-sans: -apple-system, BlinkMacSystemFont, "Inter", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --ease-emphasized: cubic-bezier(0.3, 0, 0, 1);
  --dur-1: 110ms;
  --dur-2: 180ms;
  --dur-3: 260ms;
  --dur-4: 380ms;

  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
  --shadow-lg: 0 2px 6px rgba(16, 24, 40, 0.07), 0 10px 24px rgba(16, 24, 40, 0.1);

  --gradient-brand: linear-gradient(135deg, #1a73e8, #1e8e3e);
  --gradient-hero: linear-gradient(135deg, rgba(26, 115, 232, 0.1), rgba(52, 168, 83, 0.1));

  --selection-bg: #cfe4fd;
  --selection-text: #174ea6;
  --scrollbar-thumb: #c8ccd4;
  --scrollbar-thumb-hover: #9aa0a6;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  color-scheme: light;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--link);
  text-decoration: none;
  transition: color var(--dur-2) var(--ease-standard);
}

a:hover {
  color: var(--link-hover);
}

h1,
h2,
h3,
h4 {
  margin: 0 0 12px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 12px;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
}

::selection {
  background: var(--selection-bg);
  color: var(--selection-text);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

/* ---------- 外壳 ---------- */

.app-shell {
  min-height: 100vh;
}

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: var(--side-w);
  padding: 20px 16px 16px;
  border-right: 1px solid var(--border);
  background: var(--surface);
  overflow-y: auto;
}

.app-main {
  min-width: 0;
  margin-left: var(--side-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.brand:hover {
  color: var(--text);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: var(--shadow);
}

.brand-mark svg {
  display: block;
  width: 19px;
  height: 19px;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-text {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.brand-sub {
  font-size: var(--fs-sm);
  color: var(--text-2);
  line-height: 1.4;
}

.side-title {
  margin: 0;
  padding: 0 10px 6px;
  font-size: var(--fs-2xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.side-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: var(--fs-md);
  transition: background var(--dur-2) var(--ease-standard),
    color var(--dur-2) var(--ease-standard);
}

.side-nav a:hover {
  background: var(--bg-2);
  color: var(--text);
}

.side-nav a.on {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 500;
}

.side-nav a i {
  width: 18px;
  flex: 0 0 auto;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  font-weight: 600;
  color: var(--text-3);
}

.side-nav a.on i {
  color: var(--primary);
}

.side-foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: var(--fs-sm);
  color: var(--text-3);
}

.side-foot a {
  color: var(--text-2);
}

.side-foot a:hover {
  color: var(--primary);
}

.side-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.02em;
  color: var(--text-3);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px) saturate(1.8);
  -webkit-backdrop-filter: blur(12px) saturate(1.8);
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  height: var(--nav-h);
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 24px;
}

.topbar-title {
  font-size: var(--fs-cap);
  color: var(--text-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topbar-title b {
  font-weight: 600;
  color: var(--text);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.wrap {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 24px;
}

.page {
  flex: 1 0 auto;
  padding-top: 28px;
  padding-bottom: 24px;
}

.page-head {
  margin-bottom: 22px;
}

.page-head h1 {
  margin: 0 0 6px;
  font-size: var(--fs-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.page-head .lead {
  margin: 0;
  max-width: 72ch;
  color: var(--text-2);
  font-size: var(--fs-cap);
}

.sec-no {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary);
}

/* ---------- 按钮 / 标签 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 34px;
  padding: var(--pad-btn);
  border: 1px solid var(--border-2);
  border-radius: var(--r-btn);
  background: var(--surface);
  color: var(--text);
  font-size: var(--fs-md);
  font-weight: 500;
  text-decoration: none;
  transition: background-color var(--dur-2) var(--ease-standard),
    border-color var(--dur-2) var(--ease-standard),
    color var(--dur-2) var(--ease-standard);
}

.btn:hover {
  background: var(--bg-2);
  border-color: var(--border-strong);
  color: var(--text);
}

.btn:active {
  background: var(--surface-container-high);
}

.btn-primary {
  border-color: var(--primary);
  background: var(--primary);
  color: var(--primary-text);
}

.btn-primary:hover {
  border-color: var(--primary-hover);
  background: var(--primary-hover);
  color: var(--primary-text);
}

.btn-block {
  width: 100%;
}

.btn[disabled],
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-sm {
  min-height: 26px;
  padding: var(--pad-btn-sm);
  font-size: var(--fs-sm);
}

.icon-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-2);
  transition: background var(--dur-2) var(--ease-standard),
    color var(--dur-2) var(--ease-standard);
}

.icon-btn svg {
  width: 16px;
  height: 16px;
}

.icon-btn:hover {
  background: var(--bg-2);
  color: var(--text);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--surface-container);
  color: var(--text-2);
  font-size: var(--fs-sm);
  font-weight: 500;
  line-height: 1.6;
}

.badge-primary {
  border-color: transparent;
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--primary-soft);
  color: var(--primary-active);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* ---------- 登录状态 ---------- */

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--surface-2);
  color: var(--text-2);
  font-size: var(--fs-sm);
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--danger);
}

.live-badge.on {
  border-color: var(--success-border);
  background: var(--success-bg);
  color: var(--success-text);
}

.live-badge.on .live-dot {
  background: var(--success);
  box-shadow: 0 0 0 3px var(--success-bg);
  animation: pulse 2.4s ease-out infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(30, 142, 62, 0.28);
  }
  70% {
    box-shadow: 0 0 0 7px rgba(30, 142, 62, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(30, 142, 62, 0);
  }
}

.user-box {
  display: flex;
  align-items: center;
  gap: 8px;
}

.uchip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 6px;
  border-radius: var(--radius-full);
  min-width: 0;
}

.uchip i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-container);
  color: var(--on-primary-container);
  font-style: normal;
  font-size: var(--fs-sm);
  font-weight: 600;
  text-transform: uppercase;
}

.uchip b {
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: var(--fs-cap);
  font-weight: 500;
}

/* ---------- 表单 ---------- */

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  margin-bottom: 6px;
  font-size: var(--fs-cap);
  font-weight: 500;
  color: var(--text-2);
}

.input,
input[type="text"],
input[type="password"] {
  width: 100%;
  min-height: 36px;
  padding: var(--pad-input);
  border: 1px solid var(--input-border);
  border-radius: var(--r-input);
  background: var(--input-bg);
  color: var(--input-text);
  font-family: inherit;
  font-size: var(--fs-md);
  outline: none;
  transition: border-color var(--dur-2) var(--ease-standard),
    box-shadow var(--dur-2) var(--ease-standard);
}

.input::placeholder,
input::placeholder {
  color: var(--input-placeholder);
}

.input:focus,
input:focus {
  border-color: var(--input-border-hover);
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

.form-error {
  min-height: 18px;
  margin: 0 0 12px;
  color: var(--danger-text);
  font-size: var(--fs-sm);
}

/* ---------- 卡片 / 面板 ---------- */

.card {
  margin-bottom: 16px;
  padding: var(--pad-card);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  background: var(--surface);
  box-shadow: none;
  transition: border-color var(--dur-2) var(--ease-standard);
}

.card:hover {
  border-color: var(--border-2);
}

.card:last-child {
  margin-bottom: 0;
}

.card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  font-size: var(--fs-md);
  font-weight: 600;
}

.card-title svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  color: var(--primary);
}

.card-title .count {
  margin-left: auto;
  padding: 1px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--surface-2);
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 400;
}

.panel {
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  background: var(--surface);
  overflow: hidden;
}

.panel-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.panel-head svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  color: var(--primary);
}

.panel-head h2 {
  margin: 0;
  font-size: var(--fs-md);
  font-weight: 600;
}

.panel-head .count {
  margin-left: auto;
  padding: 1px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--surface-2);
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 400;
}

/* ---------- 统计 ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.stat,
.stat-card {
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  background: var(--surface);
  transition: border-color var(--dur-2) var(--ease-standard);
}

.stat:hover,
.stat-card:hover {
  border-color: var(--border-2);
}

.stat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--text-3);
  font-size: var(--fs-cap);
  letter-spacing: 0.01em;
}

.stat-head svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  color: var(--primary);
  opacity: 0.75;
}

.stat-value {
  margin-top: 8px;
  font-family: var(--font-sans);
  font-size: var(--fs-2xl);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

.stat-sub {
  margin: 4px 0 0;
  font-size: var(--fs-xs);
  color: var(--text-3);
}

/* ---------- 表格 ---------- */

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

table.wide {
  min-width: 900px;
}

thead th {
  padding: 11px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-3);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-align: left;
  white-space: nowrap;
}

tbody td {
  padding: 13px 18px;
  border-bottom: 1px solid var(--border-soft);
  font-size: var(--fs-cap);
  vertical-align: middle;
  white-space: nowrap;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--surface-2);
}

.tunnel-name {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 600;
  font-size: var(--fs-md);
}

.status-dot {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px var(--success-bg);
}

.addr {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 3px 9px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--link);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  cursor: pointer;
  transition: border-color var(--dur-2) var(--ease-standard),
    background var(--dur-2) var(--ease-standard);
}

.addr:hover {
  border-color: rgba(26, 115, 232, 0.4);
  background: #f2f7ff;
}

.addr svg {
  width: 13px;
  height: 13px;
  opacity: 0.65;
}

.mono {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--text-2);
}

.num {
  font-variant-numeric: tabular-nums;
  color: var(--text-2);
}

.num .in {
  color: var(--link);
}

.num .out {
  color: var(--success-text);
}

.member {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: var(--fs-md);
}

.avatar {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: var(--primary-container);
  color: var(--on-primary-container);
  font-size: var(--fs-sm);
  font-weight: 600;
  text-transform: uppercase;
}

.role-tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  background: var(--primary-container);
  color: var(--on-primary-container);
  font-size: var(--fs-sm);
  font-weight: 500;
  line-height: 1.6;
}

.role-tag.user {
  border-color: var(--border);
  background: var(--surface-container);
  color: var(--text-2);
}

/* ---------- 空状态 / 提示 ---------- */

.empty {
  padding: 64px 24px;
  text-align: center;
  color: var(--text-3);
  font-size: var(--fs-cap);
}

.empty svg {
  display: block;
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  color: var(--border-strong);
}

.empty p {
  margin: 0;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  z-index: 400;
  max-width: 90vw;
  padding: 9px 18px;
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-lg);
  font-size: var(--fs-cap);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity var(--dur-2) var(--ease-standard),
    transform var(--dur-2) var(--ease-standard);
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- 页脚 ---------- */

.foot,
.auth-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  font-size: var(--fs-sm);
  color: var(--text-3);
}

.foot {
  margin: 8px 0 0;
  padding: 18px 24px 26px;
  border-top: 1px solid var(--border);
  max-width: var(--content-max);
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.foot a,
.auth-foot a {
  color: var(--text-2);
}

.foot a:hover,
.auth-foot a:hover {
  color: var(--primary);
}

.foot .spacer {
  margin-left: auto;
}

/* ---------- 登录 / 注册 ---------- */

.is-auth {
  background: var(--bg);
  background-image: radial-gradient(
      900px 420px at 15% -10%,
      rgba(26, 115, 232, 0.1),
      transparent 60%
    ),
    radial-gradient(700px 340px at 90% 0%, rgba(52, 168, 83, 0.08), transparent 60%);
  background-repeat: no-repeat;
}

.auth-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 40px 20px;
}

.auth-brand {
  width: 100%;
  max-width: 420px;
  margin-bottom: 18px;
}

.auth-main {
  width: 100%;
  max-width: 420px;
}

.auth-card {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.auth-card .sec-no {
  margin-bottom: 10px;
}

.auth-title {
  margin: 0 0 6px;
  font-size: var(--fs-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.auth-sub {
  margin: 0 0 22px;
  color: var(--text-2);
  font-size: var(--fs-cap);
}

.auth-alt {
  margin: 14px 0 0;
  text-align: center;
  font-size: var(--fs-sm);
  color: var(--text-2);
}

.auth-alt a {
  color: var(--link);
}

.auth-foot {
  justify-content: center;
  margin-top: 20px;
  padding-top: 0;
  border-top: 0;
}

/* ---------- 响应式 ---------- */

@media (max-width: 900px) {
  .sidebar {
    position: static;
    width: auto;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-right: 0;
    border-bottom: 1px solid var(--border);
    overflow: visible;
  }

  .sidebar .side-title,
  .sidebar .side-foot,
  .sidebar .brand-sub {
    display: none;
  }

  .side-nav {
    flex-direction: row;
    gap: 4px;
    margin-left: auto;
  }

  .app-main {
    margin-left: 0;
  }

  .topbar {
    position: static;
  }

  .topbar-inner {
    padding: 0 16px;
  }

  .topbar-title {
    display: none;
  }

  .wrap {
    padding: 0 16px;
  }

  .page {
    padding-top: 20px;
  }
}

@media (max-width: 640px) {
  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .uchip b {
    display: none;
  }

  .foot {
    padding: 16px;
  }

  .auth-card {
    padding: 22px;
  }
}