/* ===========================================================
   NEONVID · 暗黑霓虹主题
   =========================================================== */

:root {
  --bg: #05060d;
  --bg-2: #080a16;
  --panel: rgba(16, 20, 36, 0.72);
  --panel-solid: #0d1020;
  --line: rgba(120, 160, 255, 0.14);
  --line-strong: rgba(0, 229, 255, 0.42);

  --cyan: #00e5ff;
  --magenta: #ff2bd6;
  --purple: #8b5cf6;
  --lime: #b6ff3c;
  --amber: #ffb020;

  --text: #e6ecff;
  --text-dim: #8f9bc4;
  --text-mute: #5d688c;

  --radius: 14px;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 背景：网格 + 霓虹光斑 ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(700px 420px at 12% -8%, rgba(0, 229, 255, 0.16), transparent 65%),
    radial-gradient(680px 420px at 92% 8%, rgba(255, 43, 214, 0.14), transparent 65%),
    radial-gradient(900px 600px at 50% 110%, rgba(139, 92, 246, 0.14), transparent 70%);
  animation: breathe 12s ease-in-out infinite alternate;
}
@keyframes breathe {
  from { opacity: 0.75; }
  to   { opacity: 1; }
}

a { color: var(--cyan); text-decoration: none; }
a:hover { text-shadow: 0 0 12px rgba(0, 229, 255, 0.7); }

::selection { background: rgba(0, 229, 255, 0.35); color: #fff; }

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: rgba(255,255,255,0.02); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(0,229,255,0.35), rgba(255,43,214,0.35));
  border-radius: 8px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

/* ================= 通用组件 ================= */

.mono { font-family: var(--mono); }

.tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  opacity: 0.85;
}

.panel {
  position: relative;
  scroll-margin-top: 76px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.3), 0 18px 50px rgba(0, 0, 0, 0.45);
}
.panel::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,229,255,0.5), transparent 35%, transparent 65%, rgba(255,43,214,0.4));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.6;
  pointer-events: none;
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.panel-title .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
}
.panel-body { padding: 18px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(0, 229, 255, 0.14), rgba(0, 229, 255, 0.04));
  color: #eaffff;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.22s ease;
  box-shadow: 0 0 0 rgba(0, 229, 255, 0);
}
.btn:hover {
  box-shadow: 0 0 22px rgba(0, 229, 255, 0.4), inset 0 0 18px rgba(0, 229, 255, 0.12);
  transform: translateY(-1px);
}
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-magenta {
  border-color: rgba(255, 43, 214, 0.5);
  background: linear-gradient(180deg, rgba(255, 43, 214, 0.18), rgba(255, 43, 214, 0.05));
  color: #ffe9fb;
}
.btn-magenta:hover { box-shadow: 0 0 22px rgba(255, 43, 214, 0.42), inset 0 0 18px rgba(255, 43, 214, 0.12); }

.btn-ghost {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-dim);
}
.btn-ghost:hover { color: var(--text); box-shadow: 0 0 16px rgba(139, 92, 246, 0.3); }

.btn-lg { padding: 13px 28px; font-size: 13px; width: 100%; }

/* ---------- 表单 ---------- */
.field { margin-bottom: 16px; }
.field-label {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 7px;
  font-size: 13px;
  color: var(--text);
  font-weight: 500;
}
.field-label .req { color: var(--magenta); }
.field-tip {
  font-size: 11px;
  color: var(--text-mute);
  font-weight: 400;
}

input[type="text"], input[type="password"], input[type="number"], textarea, select {
  width: 100%;
  padding: 10px 13px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(4, 7, 16, 0.75);
  color: var(--text);
  font-family: var(--sans);
  font-size: 13px;
  outline: none;
  transition: all 0.2s ease;
}
textarea { resize: vertical; min-height: 92px; line-height: 1.65; }
select { appearance: none; cursor: pointer; }
select option { background: var(--panel-solid); color: var(--text); }

input:focus, textarea:focus, select:focus {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.12), 0 0 20px rgba(0, 229, 255, 0.18);
}
input::placeholder, textarea::placeholder { color: var(--text-mute); }

/* ---------- 文件上传 ---------- */
.uploader {
  position: relative;
  border: 1px dashed rgba(0, 229, 255, 0.32);
  border-radius: 12px;
  background: rgba(0, 229, 255, 0.03);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: all 0.22s ease;
  overflow: hidden;
}
.uploader:hover { border-color: var(--cyan); box-shadow: inset 0 0 26px rgba(0, 229, 255, 0.1); }
.uploader.drag { border-color: var(--magenta); background: rgba(255, 43, 214, 0.07); }
.uploader.has-file { border-style: solid; border-color: rgba(182, 255, 60, 0.4); }

.uploader .ph {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}
.uploader .ph b { color: var(--cyan); font-weight: 400; }
.uploader input[type="file"] { display: none; }

.thumb {
  position: relative;
  display: block;
  max-width: 100%;
  max-height: 190px;
  margin: 0 auto;
  border-radius: 8px;
  border: 1px solid var(--line);
  box-shadow: 0 0 26px rgba(0, 229, 255, 0.14);
}
.file-meta {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--lime);
  word-break: break-all;
}
.file-clear {
  position: absolute;
  top: 8px; right: 8px;
  width: 26px; height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(5, 6, 13, 0.85);
  color: var(--text-dim);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  z-index: 2;
}
.file-clear:hover { color: var(--magenta); border-color: var(--magenta); }

/* ================= 登录页 ================= */
.login-wrap {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card {
  position: relative;
  width: min(420px, 100%);
  padding: 38px 34px 30px;
  overflow: hidden;
}
.login-card .scan {
  position: absolute;
  left: 0; right: 0;
  height: 120px;
  background: linear-gradient(180deg, transparent, rgba(0, 229, 255, 0.10), transparent);
  animation: scan 4.5s linear infinite;
  pointer-events: none;
}
@keyframes scan {
  0%   { transform: translateY(-140px); }
  100% { transform: translateY(520px); }
}
.brand {
  font-family: var(--mono);
  font-size: 26px;
  letter-spacing: 0.22em;
  font-weight: 700;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 16px rgba(0, 229, 255, 0.35));
}
.brand-sub {
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--text-mute);
  text-transform: uppercase;
}
.err {
  margin-top: 12px;
  padding: 9px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255, 43, 214, 0.4);
  background: rgba(255, 43, 214, 0.08);
  color: #ffb3ee;
  font-size: 12px;
  display: none;
}
.err.show { display: block; }

/* ================= 主应用布局 ================= */
.app { position: relative; z-index: 1; min-height: 100vh; display: flex; flex-direction: column; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 12px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 6, 13, 0.82);
  backdrop-filter: blur(16px);
}
.topbar .brand { font-size: 19px; }
.nav { display: flex; gap: 6px; }
.nav button {
  padding: 8px 16px;
  border-radius: 9px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s ease;
}
.nav button:hover { color: var(--text); background: rgba(255,255,255,0.04); }
.nav button.active {
  color: #eaffff;
  border-color: var(--line-strong);
  background: rgba(0, 229, 255, 0.10);
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.22);
}
.spacer { flex: 1; }
.user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
}
.user-chip .avatar {
  width: 22px; height: 22px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--cyan), var(--magenta));
  color: #05060d;
  font-weight: 700;
  font-size: 11px;
}
.user-chip button {
  border: none; background: none; color: var(--text-mute);
  cursor: pointer; font-family: var(--mono); font-size: 11px;
}
.user-chip button:hover { color: var(--magenta); }

.main {
  flex: 1;
  width: min(1360px, 100%);
  margin: 0 auto;
  padding: 22px 24px 60px;
}
.tab-page { display: none; }
.tab-page.active { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- 模块卡片 ---------- */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}
.module-card {
  position: relative;
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(12px);
  cursor: pointer;
  overflow: hidden;
  transition: all 0.25s ease;
}
.module-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(320px 160px at var(--mx, 50%) var(--my, 0%), rgba(0,229,255,0.14), transparent 70%);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}
.module-card:hover::after { opacity: 1; }
.module-card:hover { transform: translateY(-3px); border-color: rgba(0,229,255,0.34); }
.module-card.active {
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(0,229,255,0.3), 0 0 34px rgba(0,229,255,0.22);
  background: linear-gradient(180deg, rgba(0,229,255,0.10), rgba(16,20,36,0.72));
}
.module-card .mc-icon {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 11px;
  border: 1px solid var(--line-strong);
  background: rgba(0,229,255,0.08);
  margin-bottom: 12px;
}
.module-card .mc-icon svg { width: 20px; height: 20px; stroke: var(--cyan); fill: none; stroke-width: 1.6; }
.module-card h3 { margin: 0 0 6px; font-size: 16px; letter-spacing: 0.02em; }
.module-card p { margin: 0; font-size: 12px; color: var(--text-mute); line-height: 1.55; }

/* ---------- 子模式 / 高级选项 ---------- */
.seg { display: inline-flex; gap: 4px; padding: 4px; border-radius: 10px; border: 1px solid var(--line); background: rgba(0,0,0,0.35); }
.seg button {
  padding: 7px 16px;
  border: none; border-radius: 7px;
  background: transparent;
  color: var(--text-dim);
  font-size: 12px; cursor: pointer;
  transition: all 0.18s ease;
}
.seg button.active { background: linear-gradient(180deg, rgba(0,229,255,0.2), rgba(0,229,255,0.06)); color: #eaffff; box-shadow: 0 0 14px rgba(0,229,255,0.25); }

.work {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 18px;
  align-items: start;
}
@media (max-width: 1080px) { .work { grid-template-columns: 1fr; } }

.task-scroll { max-height: calc(100vh - 240px); overflow: auto; }

/* ---------- 任务列表 ---------- */
.task {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(8, 11, 22, 0.6);
  padding: 14px;
  margin-bottom: 12px;
  transition: border-color 0.2s ease;
}
.task:hover { border-color: rgba(0,229,255,0.3); }
.task-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.task-title { font-size: 13px; font-weight: 600; }
.task-id { font-family: var(--mono); font-size: 10.5px; color: var(--text-mute); }
.task-meta { margin-top: 8px; font-family: var(--mono); font-size: 11px; color: var(--text-mute); word-break: break-all; }

.status {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid currentColor;
}
.status .blip { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.status.queued { color: var(--amber); }
.status.running { color: var(--cyan); }
.status.running .blip { animation: pulse 1s ease-in-out infinite; }
.status.success { color: var(--lime); }
.status.failed { color: #ff5c7a; }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: .3; transform: scale(.7); } }

.bar {
  height: 4px;
  margin-top: 10px;
  border-radius: 4px;
  background: rgba(255,255,255,0.06);
  overflow: hidden;
}
.bar > i {
  display: block; height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  box-shadow: 0 0 12px rgba(0,229,255,0.6);
  transition: width 0.6s ease;
}
.bar.indet > i { width: 35% !important; animation: slide 1.4s ease-in-out infinite; }
@keyframes slide { 0% { margin-left: -35%; } 100% { margin-left: 100%; } }

.result-box { margin-top: 12px; display: grid; gap: 10px; }
.result-box video, .result-box img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #000;
  box-shadow: 0 0 28px rgba(0,229,255,0.14);
}
.result-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.result-actions .btn { padding: 7px 14px; font-size: 10.5px; }

.empty {
  padding: 46px 20px;
  text-align: center;
  color: var(--text-mute);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

/* ---------- Toast ---------- */
.toast-host { position: fixed; right: 20px; bottom: 20px; z-index: 200; display: grid; gap: 10px; }
.toast {
  min-width: 240px;
  max-width: 380px;
  padding: 12px 15px;
  border-radius: 11px;
  border: 1px solid var(--line-strong);
  background: rgba(10, 14, 28, 0.94);
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5), 0 0 22px rgba(0,229,255,0.18);
  font-size: 12.5px;
  animation: toastIn 0.28s ease;
}
.toast.err { border-color: rgba(255,92,122,0.55); box-shadow: 0 12px 40px rgba(0,0,0,0.5), 0 0 22px rgba(255,92,122,0.22); }
.toast.ok { border-color: rgba(182,255,60,0.45); box-shadow: 0 12px 40px rgba(0,0,0,0.5), 0 0 22px rgba(182,255,60,0.18); }
@keyframes toastIn { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: none; } }

.foot {
  padding: 18px 24px calc(30px + env(safe-area-inset-bottom, 0px));
  text-align: center;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--text-mute);
  text-transform: uppercase;
}

/* ===========================================================
   移动端适配（手机 / 竖屏平板）
   =========================================================== */

@media (max-width: 768px) {
  /* 触摸友好：去掉点击高亮，禁用双击缩放延迟 */
  body { -webkit-tap-highlight-color: transparent; }
  .btn, .nav button, .module-card, .uploader, .seg button, button { touch-action: manipulation; }

  /* ---- 顶栏 ---- */
  .topbar {
    padding: 10px 14px;
    gap: 10px;
  }
  .topbar .brand { font-size: 15px; letter-spacing: 0.12em; }
  .nav button { padding: 8px 12px; font-size: 11px; letter-spacing: 0.08em; }
  .user-chip { padding: 5px 9px; gap: 7px; font-size: 10.5px; }
  .user-chip #username { display: none; }
  .user-chip button { padding: 2px 4px; font-size: 11px; }

  /* ---- 主区域 ---- */
  .main { padding: 14px 14px calc(104px + env(safe-area-inset-bottom, 0px)); }
  /* 模块卡片：图标 + 标题横排，隐藏描述，纵向更省空间 */
  .module-grid { grid-template-columns: 1fr; gap: 10px; }
  .module-card { display: flex; align-items: center; gap: 12px; padding: 12px 14px; }
  .module-card .mc-icon { width: 36px; height: 36px; margin-bottom: 0; flex: none; }
  .module-card .mc-body { flex: 1; min-width: 0; }
  .module-card .tag { margin-bottom: 1px; font-size: 9.5px; }
  .module-card h3 { font-size: 15px; margin: 0; }
  .module-card p { display: none; }
  .work { gap: 14px; }

  /* 关键：backdrop-filter 会成为 fixed 子元素的包含块，会让吸底按钮错位；
     移动端去掉它（同时降低 GPU 开销），改用更实的半透明底色 */
  .panel { backdrop-filter: none; background: rgba(13, 17, 32, 0.94); }
  .module-card { backdrop-filter: none; background: rgba(13, 17, 32, 0.94); }

  .panel-title { padding: 12px 14px; font-size: 11px; letter-spacing: 0.1em; }
  .panel-body { padding: 14px; }

  /* ---- 表单：字号 ≥16px 避免 iOS 聚焦时自动放大 ---- */
  .field { margin-bottom: 15px; }
  .field-label { font-size: 13.5px; flex-wrap: wrap; gap: 4px 8px; }
  .field-tip { flex-basis: 100%; font-size: 11px; }
  input[type="text"], input[type="password"], input[type="number"], textarea, select {
    font-size: 16px;
    padding: 11px 12px;
  }
  textarea { min-height: 96px; }
  select { padding-right: 34px; background-image: linear-gradient(45deg, transparent 50%, var(--cyan) 50%), linear-gradient(135deg, var(--cyan) 50%, transparent 50%); background-position: calc(100% - 18px) 50%, calc(100% - 12px) 50%; background-size: 6px 6px, 6px 6px; background-repeat: no-repeat; }

  /* ---- 模式切换按钮等分铺满 ---- */
  .seg { display: flex; width: 100%; }
  .seg button { flex: 1; padding: 10px 8px; font-size: 13px; }

  /* ---- 上传控件 ---- */
  .uploader { padding: 14px 12px; }
  .uploader .ph { font-size: 12px; }
  .thumb { max-height: 160px; }
  .file-clear { width: 32px; height: 32px; font-size: 16px; }

  /* ---- 底部吸底生成按钮：拇指可达 ---- */
  #submitBtn.btn-lg {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    width: auto;
    z-index: 60;
    padding: 15px 20px;
    font-size: 14px;
    border-radius: 12px;
    background: linear-gradient(180deg, rgba(255, 43, 214, 0.28), rgba(255, 43, 214, 0.12));
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.65), 0 0 26px rgba(255, 43, 214, 0.35);
  }

  /* ---- 任务列表：移动端不限制高度，随页面滚动 ---- */
  .task-scroll { max-height: none; overflow: visible; }
  .task { padding: 12px; }
  .task-title { font-size: 12.5px; }
  .status { font-size: 10px; padding: 3px 8px; }
  .result-actions { display: flex; gap: 8px; }
  .result-actions .btn { flex: 1; justify-content: center; padding: 9px 10px; font-size: 10.5px; }

  /* ---- Toast 全宽 ---- */
  .toast-host {
    left: 12px;
    right: 12px;
    bottom: calc(84px + env(safe-area-inset-bottom, 0px));
  }
  .toast { min-width: 0; width: 100%; max-width: none; }

  /* ---- 登录页 ---- */
  .login-wrap { padding: 16px; align-items: start; padding-top: 8vh; }
  .login-card { padding: 28px 20px 24px; }
  .brand { font-size: 22px; }
  .login-fields { margin-top: 22px; }

  .foot { padding: 14px 16px calc(36px + env(safe-area-inset-bottom, 0px)); font-size: 9.5px; letter-spacing: 0.1em; }
}

/* 超窄屏（≤400px）进一步压缩顶栏 */
@media (max-width: 400px) {
  .topbar { padding: 9px 10px; gap: 8px; }
  .topbar .brand { font-size: 13px; letter-spacing: 0.06em; }
  .nav button { padding: 7px 9px; font-size: 10.5px; letter-spacing: 0.04em; }
  .user-chip .avatar { width: 20px; height: 20px; font-size: 10px; }
  .main { padding: 12px 11px calc(100px + env(safe-area-inset-bottom, 0px)); }
}

/* 横屏矮屏：吸底按钮改为常规流内，避免遮挡 */
@media (max-height: 520px) and (max-width: 900px) {
  #submitBtn.btn-lg { position: static; width: 100%; box-shadow: none; }
  .main { padding-bottom: 30px; }
  .toast-host { bottom: calc(12px + env(safe-area-inset-bottom, 0px)); }
}