/* ==================================================================
   Stellar 星耀 · 全局主题
   深空海军蓝 × 电光青渐变 × 星金点缀
   ================================================================== */
:root {
  --st-navy-900: #071224;
  --st-navy-800: #0A1B33;
  --st-navy-700: #122A4E;
  --st-teal: #00E5C3;
  --st-teal-deep: #00B79B;
  --st-blue: #2D6BFF;
  --st-gold: #F2C14E;
  --st-grad: linear-gradient(135deg, #00C9AE 0%, #0FA5CE 48%, #2D6BFF 100%);
  --st-text: #0A1B33;
  --st-text-2: rgba(10, 27, 51, 0.62);
  --st-text-3: rgba(10, 27, 51, 0.42);
  --st-bg: #F4F7FB;
  --st-line: #E6ECF4;
  --st-radius: 14px;
  --st-shadow: 0 10px 30px rgba(10, 27, 51, 0.08);
  --st-shadow-lg: 0 24px 60px rgba(10, 27, 51, 0.16);
}

h1 {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: 1px;
}

h2 {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 1px;
}

h3 {
  font-size: 24px;
  font-weight: 600;
}

h4 {
  font-size: 20px;
  font-weight: 600;
}

h5 {
  font-size: 18px;
  font-weight: 600;
}

.font-theme {
  color: var(--st-teal-deep);
}

textarea {
  resize: none;
}

body {
  background-color: #FFFFFF;
  color: var(--st-text);
  font-size: 14px;
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

input {
  outline: none;
}

/* 盒子阴影 */
.box-shadow {
  background: #FFFFFF;
  box-shadow: var(--st-shadow);
}

.box-shadow-light {
  background: #FFFFFF;
  box-shadow: var(--st-shadow);
}

a {
  color: #666;
  cursor: pointer;
  text-decoration: none;
  transition: color .2s ease;
}

a:hover {
  color: var(--st-teal-deep) !important;
  text-decoration: none !important;
}

.link-hover {
  cursor: pointer;
}

.link-hover:hover {
  color: var(--st-teal) !important;
}

.title-desc {
  color: var(--st-text-2);
  font-size: 14px;
}

::-webkit-scrollbar-thumb {
  background-color: rgba(10, 27, 51, 0.22);
  border: 1px solid transparent;
  background-clip: padding-box;
  border-radius: 10px;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

.animated {
  animation-duration: .5s !important;
}

/* ---------------- 按钮 ---------------- */
.btn {
  padding: 9px 22px;
  opacity: 1;
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  display: inline-block;
  transition: all .25s ease;
  border: none;
  line-height: 1.5;
}

.btn2 {
  padding: 11px 34px;
  opacity: 1;
  border-radius: 12px;
  cursor: pointer;
  font-size: 15px;
  display: inline-block;
  transition: all .25s ease;
}

.btn-s {
  padding: 9px 30px;
  border-radius: 10px;
  display: inline-block;
  transition: all .25s ease;
}

.btn-normal {
  color: #fff;
  background: var(--st-grad);
  box-shadow: 0 8px 20px rgba(4, 168, 183, 0.28);
  font-weight: 600;
  letter-spacing: 1px;
}

.btn-normal:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(4, 168, 183, 0.4);
  filter: brightness(1.06);
}

.btn-normal:active {
  transform: translateY(0);
  filter: brightness(.96);
}

.btn-normal:disabled {
  opacity: 0.4;
  box-shadow: none;
}

.btn-normal-light {
  color: var(--st-text);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--st-line);
  font-weight: 500;
}

.btn-normal-light:hover {
  border: 1px solid var(--st-teal);
  color: var(--st-teal-deep);
  transform: translateY(-2px);
  box-shadow: var(--st-shadow);
}

.btn-dark {
  color: #fff;
  background: var(--st-navy-800);
  font-weight: 500;
}

.btn-dark:hover {
  color: #fff;
  background: var(--st-navy-700);
  transform: translateY(-2px);
  box-shadow: var(--st-shadow);
}

.btn-orgin {
  color: #fff;
  background: var(--st-grad);
  font-weight: 600;
}

.btn-orgin:hover {
  color: #fff;
  filter: brightness(1.06);
}

/* ==================================================================
   Bootstrap 冲突修复
   bootstrap.min.css 在 header.html 中后于本文件加载，其 .btn 的
   background-image:none / border:1px solid transparent / padding
   会以同优先级覆盖 stellar 按钮样式。
   以下双类选择器特异性 (0,2,0) 高于 Bootstrap .btn (0,1,0)，
   确保按钮样式不受加载顺序影响。
   ================================================================== */
.btn.btn {
  padding: 9px 22px;
  border-radius: 10px;
  border: none;
  line-height: 1.5;
  font-size: 14px;
  background-image: none;
  box-shadow: none;
  text-shadow: none;
}
.btn.btn-normal {
  color: #fff;
  background: var(--st-grad);
  box-shadow: 0 8px 20px rgba(4, 168, 183, 0.28);
  font-weight: 600;
  letter-spacing: 1px;
}
.btn.btn-normal:hover {
  color: #fff;
  background: var(--st-grad);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(4, 168, 183, 0.4);
  filter: brightness(1.06);
}
.btn.btn-normal-light {
  color: var(--st-text);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--st-line);
  font-weight: 500;
}
.btn.btn-normal-light:hover {
  color: var(--st-teal-deep);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--st-teal);
  transform: translateY(-2px);
  box-shadow: var(--st-shadow);
}
.btn.btn-dark {
  color: #fff;
  background: var(--st-navy-800);
  font-weight: 500;
}
.btn.btn-dark:hover {
  color: #fff;
  background: var(--st-navy-700);
}
.btn.btn-orgin {
  color: #fff;
  background: var(--st-grad);
  font-weight: 600;
}
.btn.btn-orgin:hover {
  color: #fff;
  background: var(--st-grad);
  filter: brightness(1.06);
}
.btn2.btn2 {
  padding: 11px 34px;
  border-radius: 12px;
  border: none;
}
.btn-s.btn-s {
  padding: 9px 30px;
  border-radius: 10px;
  border: none;
}