:root {
  --bg-gradient: linear-gradient(155deg, #d4e5fc 0%, #e4f0fe 30%, #eef4fb 55%, #e6edfa 78%, #e0ecfd 100%);
  --card-bg: rgba(255, 255, 255, 0.8);
  --card-border: rgba(255, 255, 255, 0.65);
  --input-bg: rgba(255, 255, 255, 0.55);
  --input-border: rgba(200, 200, 200, 0.9);
  --input-focus-border: rgba(100, 140, 220, 0.65);
  --input-focus-shadow: rgba(100, 140, 220, 0.18);
  --text-primary: #1e2a3c;
  --text-secondary: #4b5568;
  --text-muted: #778296;
  --accent-blue: #3b6fd4;
  --accent-purple: #8b7ec8;
  --accent-light-purple: #c5bce8;
  /* 明亮绿色渐变 */
  --btn-green-start: #4cd964;
  --btn-green-end: #34c759;
  --btn-green-hover-start: #5ce070;
  --btn-green-hover-end: #46d760;
  --btn-shadow: 0 8px 18px rgba(52, 199, 89, 0.35), 0 2px 4px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  --btn-shadow-hover: 0 10px 24px rgba(52, 199, 89, 0.45), 0 3px 8px rgba(0, 0, 0, 0.12), inset 0 1px 0 rgba(255,255,255,0.5);
  --btn-shadow-active: 0 3px 8px rgba(40, 160, 70, 0.4), 0 1px 2px rgba(0, 0, 0, 0.12), inset 0 2px 5px rgba(0, 0, 0, 0.18);
  --success-bg: rgba(210, 240, 220, 0.3);
  --success-border: rgba(100, 200, 130, 0.55);
  --uncertain-bg: rgba(235, 230, 250, 0.3);
  --uncertain-border: rgba(170, 155, 210, 0.55);
  --divider: rgba(170, 185, 210, 0.28);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --shadow-card: 0 12px 48px rgba(60, 80, 120, 0.08), 0 2px 12px rgba(60, 80, 120, 0.05);
  --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
  --font-stack: "微软雅黑", 'PingFang SC', 'Noto Sans SC', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-stack);
  min-height: 100vh;
  background: var(--bg-gradient);
  background-attachment: fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 装饰光斑 — 以浅蓝色为主，紫色柔和 */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: blur(80px);
  opacity: 0.5;
  animation: floatOrb 16s ease-in-out infinite;
  will-change: transform;
}
.bg-orb--1 {
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(170, 210, 245, 0.7) 0%, rgba(150, 200, 240, 0) 70%);
  top: -10%;
  left: -12%;
  animation-delay: 0s;
  animation-duration: 18s;
}
.bg-orb--2 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(190, 215, 250, 0.65) 0%, rgba(175, 205, 245, 0) 70%);
  bottom: -8%;
  right: -10%;
  animation-delay: -6s;
  animation-duration: 20s;
}
.bg-orb--3 {
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(200, 210, 240, 0.55) 0%, rgba(185, 195, 230, 0) 70%);
  top: 40%;
  left: 50%;
  animation-delay: -9s;
  animation-duration: 22s;
}
.bg-orb--4 {
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(210, 200, 235, 0.45) 0%, rgba(200, 190, 225, 0) 70%);
  top: 18%;
  right: 12%;
  animation-delay: -4s;
  animation-duration: 17s;
}

@keyframes floatOrb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  20% { transform: translate(45px, -35px) scale(1.06); }
  40% { transform: translate(-25px, 30px) scale(0.94); }
  60% { transform: translate(35px, 20px) scale(1.03); }
  80% { transform: translate(-40px, -25px) scale(0.96); }
}

/* 主容器加宽，更舒适 */
.main-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 800px;
}

/* 玻璃卡片，增大内边距 */
.glass-card {
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: 50px 60px 80px 60px;
  transition: all var(--transition-smooth);
  position: relative;
}

/* 标题区域 */
.header-area {
  text-align: center;
  margin-bottom: 32px;
  margin-top: 20px;
}
.header-icon {
  display: inline-block;
  font-size: 48px;
  margin-bottom: 10px;
  animation: gentleBounce 2.8s ease-in-out infinite;
  filter: drop-shadow(0 6px 10px rgba(70, 90, 140, 0.15));
}
@keyframes gentleBounce {
  0%, 100% { transform: translateY(0); }
  30% { transform: translateY(-10px); }
  50% { transform: translateY(0); }
  70% { transform: translateY(-5px); }
  85% { transform: translateY(0); }
}
.header-title {
  font-size: 2.0rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.9;
}
.header-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* 搜索区域 */
.search-section {
  position: relative;
  margin-bottom: 60px;
}
.search-row {
  display: flex;
  gap: 12px;
  align-items: stretch;
}
.search-input-wrap {
  flex: 1;
  position: relative;
}
.search-input {
  width: 100%;
  height: 58px;
  padding: 0 48px 0 20px;
  font-size: 1rem;
  font-family: var(--font-stack);
  color: var(--text-primary);
  background: var(--input-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-smooth);
  letter-spacing: 0.02em;
}
.search-input::placeholder {
  color: #9aa5c0;
  font-weight: 400;
}
.search-input:focus {
  border-color: var(--input-focus-border);
  box-shadow: 0 0 0 5px var(--input-focus-shadow);
  background: rgba(255, 255, 255, 0.65);
}
.search-icon-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  color: #8f9ab5;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-smooth);
  z-index: 2;
}
.search-icon-btn:hover {
  color: var(--accent-blue);
  background: rgba(100, 140, 220, 0.08);
}
.search-submit-btn {
  height: 58px;
  padding: 0 30px;
  font-size: 1.3rem;
  font-weight: 650;
  font-family: var(--font-stack);
  letter-spacing: 0.03em;
  color: #fff;
  background: linear-gradient(175deg, #4cd964 0%, #3dd154 25%, #34c759 100%);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: var(--btn-shadow);
  transition: all var(--transition-bounce);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.search-submit-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 48%;
  background: linear-gradient(to bottom, rgba(255,255,255,0.25) 0%, rgba(255,255,255,0) 100%);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  pointer-events: none;
}
.search-submit-btn:hover {
  background: linear-gradient(175deg, #5ce070 0%, #4cd964 25%, #46d760 100%);
  box-shadow: var(--btn-shadow-hover);
  transform: translateY(-2px);
}
.search-submit-btn:active {
  background: linear-gradient(175deg, #40c850 0%, #32b845 25%, #2aa73c 100%);
  box-shadow: var(--btn-shadow-active);
  transform: translateY(3px) scale(0.97);
  transition: all 0.08s ease;
}

/* 自动补全下拉 */
.autocomplete-dropdown {
  position: absolute;
  top: 62px;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(200, 215, 235, 0.7);
  border-radius: var(--radius-sm);
  box-shadow: 0 12px 32px rgba(60, 80, 110, 0.1), 0 4px 10px rgba(60,80,110,0.05);
  max-height: 240px;
  overflow-y: auto;
  z-index: 20;
  display: none;
  list-style: none;
  padding: 8px 0;
  margin: 0;
}
.autocomplete-dropdown.show {
  display: block;
  animation: fadeInDown 0.22s ease-out;
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
.autocomplete-item {
  padding: 13px 20px;
  cursor: pointer;
  font-size: 0.98rem;
  color: var(--text-primary);
  transition: background var(--transition-smooth);
  letter-spacing: 0.02em;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font-family: var(--font-stack);
}
.autocomplete-item:hover,
.autocomplete-item:focus {
  background: rgba(100, 140, 220, 0.08);
  outline: none;
}
.autocomplete-item mark {
  background: transparent;
  color: var(--accent-blue);
  font-weight: 700;
}

/* 结果提示区域 */
.result-area {
  margin-top: 18px;
  min-height: 20px;
  transition: all var(--transition-smooth);
}
.result-message {
  display: none;
  align-items: flex-start;
  gap: 12px;
  padding: 30px 30px;
  border-radius: var(--radius-sm);
  font-size: 0.96rem;
  line-height: 1.8;
  letter-spacing: 0.02em;
  animation: fadeInUp 0.4s ease-out;
}
.result-message.show {
  display: flex;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.result-message--success {
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  color: #237830;
}
.result-message--uncertain {
  background: var(--uncertain-bg);
  border: 1px solid var(--uncertain-border);
  color: #3e3358;
}
.result-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.result-text strong {
  font-weight: 700;
}

/* 分隔线 */
.section-divider {
  border: none;
  border-top: 1px solid var(--divider);
  margin: 28px 0 30px;
  opacity: 0.6;
}

/* 表单区域 */
.form-section-title {
  font-size: 1.5rem;
  font-weight: 650;
  color: var(--text-primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.form-section-title::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 20px;
  border-radius: 3px;
  background: var(--accent-purple);
  flex-shrink: 0;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 20px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}
.form-group--full {
  grid-column: 1 / -1;
}
.form-label {
	font-size: 0.95rem;
	font-weight: 550;
	color: #333333;
	letter-spacing: 0em;
	line-height: 24px;
}
.form-label .required-star {
  color: #e07b6c;
  margin-left: 2px;
  font-weight: 700;
}
.form-input,
.form-textarea {
  width: 100%;
  padding: 15px 18px;
  font-size: 0.98rem;
  font-family: var(--font-stack);
  color: var(--text-primary);
  background: var(--input-bg);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: all var(--transition-smooth);
  letter-spacing: 0.02em;
  resize: vertical;
  min-height: 50px;
}
.form-textarea {
  min-height: 130px;
  line-height: 1.65;
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: #afb9cd;
}
.form-input:focus,
.form-textarea:focus {
  border-color: var(--input-focus-border);
  box-shadow: 0 0 0 5px var(--input-focus-shadow);
  background: rgba(255, 255, 255, 0.65);
}
.form-input.error,
.form-textarea.error {
  border-color: #e8a0a0;
  box-shadow: 0 0 0 4px rgba(220, 140, 140, 0.12);
}
.form-error-msg {
  font-size: 0.8rem;
  color: #c97070;
  display: none;
  letter-spacing: 0.02em;
}
.form-error-msg.show {
  display: block;
  animation: fadeInUp 0.25s ease-out;
}

/* 提交按钮，明亮绿色 */
.submit-btn-wrap {
  margin-top: 26px;
  text-align: center;
}
.submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 64px;
  padding: 0 50px;
  font-size: 1.5rem;
  font-weight: 650;
  font-family: "微软雅黑", Arial, Helvetica, sans-serif;
  letter-spacing: 0.01em;
  color: #fff;
  background: linear-gradient(175deg, #4cd964 0%, #3dd154 25%, #34c759 100%);
  border: none;
  border-radius: 20px;
  cursor: pointer;
  box-shadow: var(--btn-shadow);
  transition: all var(--transition-bounce);
  position: relative;
  overflow: hidden;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  min-width: 200px;
}
.submit-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 48%;
  background: linear-gradient(to bottom, rgba(255,255,255,0.28) 0%, rgba(255,255,255,0) 100%);
  border-radius: 30px 30px 0 0;
  pointer-events: none;
}
.submit-btn:hover {
  background: linear-gradient(175deg, #5ce070 0%, #4cd964 25%, #46d760 100%);
  box-shadow: var(--btn-shadow-hover);
  transform: translateY(-2px);
}
.submit-btn:active {
  background: linear-gradient(175deg, #40c850 0%, #32b845 25%, #2aa73c 100%);
  box-shadow: var(--btn-shadow-active);
  transform: translateY(4px) scale(0.96);
  transition: all 0.08s ease;
}
.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}
.submit-btn .spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 2.8px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}
.submit-btn.loading .spinner {
  display: inline-block;
}
.submit-btn.loading .btn-text {
  display: none;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 成功弹窗 */
.toast-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(20, 25, 45, 0.35);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.25s ease-out;
  padding: 20px;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.toast-dialog {
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,0.65);
  border-radius: var(--radius-lg);
  padding: 36px 32px 28px;
  text-align: center;
  box-shadow: 0 24px 56px rgba(30, 40, 70, 0.15);
  max-width: 420px;
  width: 100%;
  animation: scaleIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes scaleIn { from { opacity: 0; transform: scale(0.86); } to { opacity: 1; transform: scale(1); } }
.toast-icon { font-size: 56px; margin-bottom: 14px; }
.toast-title { font-size: 1.3rem; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.toast-desc { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.6; }
.toast-close-btn {
  margin-top: 22px;
  height: 46px;
  padding: 0 32px;
  font-size: 0.95rem;
  font-weight: 650;
  font-family: var(--font-stack);
  color: #fff;
  background: linear-gradient(175deg, #4cd964 0%, #34c759 100%);
  border: none;
  border-radius: 26px;
  cursor: pointer;
  box-shadow: var(--btn-shadow);
  transition: all var(--transition-bounce);
}
.toast-close-btn:active { transform: translateY(3px) scale(0.96); }

.footer-note {
  text-align: center;
  margin: 40px 0px 50px 0px;
  font-size: 0.85rem;
  color: var(--text-muted);
  opacity: 0.65;
}

p.btn-note {
  text-align: center;
  margin: 20px 0px 10px 0px;
  font-size: 0.85rem;
  color: var(--text-muted);
  opacity: 0.65;
}

/* 响应式 */
@media (max-width: 640px) {
  body { padding: 10px 10px 16px 10px; align-items: flex-start; }
  .glass-card { padding: 30px 30px 50px 30px; border-radius: 22px; }
  .header-title { font-size: 1.9rem; }
  .header-subtitle { font-size: 0.9rem; }
  .header-icon { font-size: 40px; }
  .search-row { flex-direction: column; gap: 10px; }
  .search-input { height: 60px; font-size: 0.98rem; }
  .search-submit-btn { height: 60px; width: 100%; border-radius: var(--radius-sm); margin-top: 20px; }
  .autocomplete-dropdown { top: 56px; max-height: 180px; }
  .form-grid { grid-template-columns: 1fr; gap: 14px; }
  .submit-btn { width: 100%; height: 60px; font-size: 1.5rem; min-width: unset; }
  .toast-dialog { padding: 28px 18px 22px; }
}


@media (max-width: 350px) {
  body { padding: 10px 10px 16px 10px; align-items: flex-start; }
  .glass-card { padding: 20px 20px 50px 20px; border-radius: 22px; }
  .header-title { font-size: 1.6rem; }
  .header-subtitle { font-size: 0.9rem; }
  .header-icon { font-size: 40px; }
  .search-row { flex-direction: column; gap: 10px; }
  .search-input { height: 60px; font-size: 0.98rem; }
  .search-submit-btn { height: 60px; width: 100%; border-radius: var(--radius-sm); margin-top: 20px; }
  .autocomplete-dropdown { top: 56px; max-height: 180px; }
  .form-grid { grid-template-columns: 1fr; gap: 14px; }
  .submit-btn { width: 100%; height: 60px; font-size: 1.5rem; min-width: unset; }
  .toast-dialog { padding: 28px 18px 22px; }
}