* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  min-height: 100%;
}

[hidden] {
  display: none !important;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(255, 216, 77, 0.08), transparent 28%),
    radial-gradient(circle at top right, rgba(255, 90, 54, 0.12), transparent 30%),
    var(--bg-primary);
  color: var(--text-primary);
}

button,
input {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

.app-shell {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: 20px 16px 40px;
}

.page {
  display: grid;
  gap: 16px;
}

.hero {
  display: grid;
  gap: 8px;
  margin-bottom: 8px;
}

.eyebrow {
  color: var(--accent-strong);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.title {
  font-size: clamp(30px, 8vw, 52px);
  line-height: 0.94;
  font-weight: 900;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 100%), var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-lg);
}

.btn,
.btn-ghost,
.btn-danger {
  min-height: 52px;
  border-radius: 999px;
  width: 100%;
  padding: 0 18px;
  font-weight: 700;
}

.btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
}

.btn:disabled,
.btn-danger:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.btn-danger {
  background: rgba(255, 90, 54, 0.14);
  border: 1px solid rgba(255, 90, 54, 0.38);
  color: #ffb1a2;
}

.field,
.textarea {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-primary);
  padding: 14px 16px;
  outline: none;
}

.field:focus,
.textarea:focus {
  border-color: var(--accent);
}

.label {
  display: block;
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: 8px;
}

.stack {
  display: grid;
  gap: 12px;
}

.hidden {
  display: none !important;
}

.toast {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 16, 20, 0.95);
  border: 1px solid var(--accent);
  color: #fff;
  padding: 12px 18px;
  border-radius: 999px;
  z-index: 9999;
}