/* =====================================================================
   宜老天气通 · 设计系统 v2  (双橙主题)
   覆盖 Bootstrap 5,保留原有 class 契约,仅换"皮肤"
   ===================================================================== */

/* ----- 1. 设计令牌 ------------------------------------------------- */
:root {
  /* 品牌橙 */
  --brand:        #EE7E2D;   /* logo 主色 */
  --brand-deep:   #C25F14;   /* 悬停 / 深色 */
  --brand-soft:   #F5A25C;   /* 琥珀辅色 */
  --brand-cream:  #FEF6EC;   /* 奶油底 */
  --brand-wash:   #FFF1E0;   /* 更浅的橙纱 */

  /* 中性 */
  --ink:          #1C1A17;
  --ink-2:        #4C463E;
  --ink-3:        #8A8274;
  --bg:           #FBFAF7;   /* 奶油白底 */
  --bg-2:         #F3EEE4;   /* 浅灰橙 */
  --surface:      #FFFFFF;
  --line:         #E4DCCC;
  --line-soft:    #EFE8DA;

  /* 语义色 */
  --ok:    #4E8B49;
  --warn:  #D88A2C;
  --risk:  #C63E2C;
  --info:  #2E7BB0;

  /* 排版 */
  --font-sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB',
               'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --font-num:  'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;

  --s-xs: 12px;
  --s-sm: 13px;
  --s-base: 15px;
  --s-md: 16px;
  --s-lg: 20px;
  --s-xl: 26px;
  --s-2xl: 36px;

  --r-s: 8px;
  --r-m: 12px;
  --r-l: 16px;
  --r-xl: 22px;

  --shadow-s: 0 1px 2px rgba(43,28,8,.05);
  --shadow-m: 0 4px 14px rgba(43,28,8,.08);
  --shadow-l: 0 14px 34px rgba(43,28,8,.10);

  --ease: cubic-bezier(.2,.7,.2,1);

  /* Bootstrap 变量覆盖 — 让所有 .btn-primary / .text-primary 自动换色 */
  --bs-primary: var(--brand);
  --bs-primary-rgb: 238,126,45;
  --bs-link-color: var(--brand-deep);
  --bs-link-hover-color: var(--ink);
  --bs-body-font-family: var(--font-sans);
  --bs-body-color: var(--ink);
  --bs-body-bg: var(--bg);
  --bs-border-color: var(--line);
  --bs-border-radius: var(--r-m);
  --bs-border-radius-sm: var(--r-s);
  --bs-border-radius-lg: var(--r-l);

  /* 保留原项目使用过的旧变量名,避免老样式报错 */
  --primary-color: var(--brand);
  --primary-dark: var(--brand-deep);
  --primary-light: var(--brand-soft);
  --secondary-color: var(--ink-2);
  --secondary-dark: var(--ink);
  --secondary-light: var(--ink-3);
  --success-color: var(--ok);
  --success-dark: #3b6d37;
  --danger-color: var(--risk);
  --warning-color: var(--warn);
  --info-color: var(--info);
  --background-primary: var(--surface);
  --background-secondary: var(--bg);
  --background-tertiary: var(--bg-2);
  --text-primary: var(--ink);
  --text-secondary: var(--ink-2);
  --text-tertiary: var(--ink-3);
  --border-color: var(--line);
  --border-color-dark: var(--line-soft);
  --shadow-sm: var(--shadow-s);
  --shadow-md: var(--shadow-m);
  --shadow-lg: var(--shadow-l);
  --shadow-xl: var(--shadow-l);
  --glass-bg-strong: rgba(255,255,255,.92);
  --glass-border: rgba(228,220,204,.7);
  --glass-blur: 14px;
}

/* ----- 2. 基础重置 ------------------------------------------------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  font-size: var(--s-base);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -.01em;
  line-height: 1.3;
}

a { color: var(--brand-deep); text-decoration: none; }
a:hover { color: var(--ink); }

::selection { background: var(--brand-wash); color: var(--brand-deep); }

/* ----- 3. 导航栏 (navbar) ----------------------------------------- */
.navbar {
  background: var(--surface) !important;
  border-bottom: 1px solid var(--line-soft);
  box-shadow: 0 1px 0 rgba(43,28,8,.02);
  padding: .8rem 0;
}
.navbar-brand {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--ink) !important;
  display: flex; align-items: center; gap: .5rem;
}
.navbar-brand i.bi-cloud-sun {
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-soft) 100%);
  color: #fff !important;
  border-radius: 9px;
  font-size: 16px;
}
.brand-tagline {
  font-weight: 400; font-size: .82rem; color: var(--ink-3);
  padding-left: .6rem; margin-left: .4rem;
  border-left: 1px solid var(--line);
}

/* 顶部右侧的 desktop 快捷按钮组 */
.desktop-nav-actions .btn { border-radius: 999px; padding: .38rem .95rem; font-size: .85rem; }
.desktop-nav-actions .btn-outline-secondary {
  border-color: var(--line); color: var(--ink-2); background: transparent;
}
.desktop-nav-actions .btn-outline-secondary:hover {
  background: var(--bg-2); color: var(--ink); border-color: var(--line);
}
.desktop-nav-actions .btn-outline-primary {
  border-color: var(--brand); color: var(--brand-deep); background: transparent;
}
.desktop-nav-actions .btn-outline-primary:hover {
  background: var(--brand); color: #fff;
}
.desktop-nav-actions .btn-outline-dark {
  border-color: var(--ink); color: var(--ink);
}
.desktop-nav-actions .btn-outline-dark:hover {
  background: var(--ink); color: #fff;
}
.desktop-nav-actions .btn-outline-danger {
  border-color: var(--line); color: var(--ink-3);
}
.desktop-nav-actions .btn-outline-danger:hover {
  background: rgba(198,62,44,.08); color: var(--risk); border-color: rgba(198,62,44,.3);
}

.navbar-toggler, .app-nav-toggle {
  border: 1px solid var(--line); border-radius: 999px;
  padding: .35rem .75rem; background: var(--surface);
  color: var(--ink-2); font-size: .85rem;
}
.navbar-toggler:focus { box-shadow: none; }

/* ----- 4. 抽屉 (offcanvas) ---------------------------------------- */
.app-offcanvas {
  background: var(--surface);
  backdrop-filter: none; -webkit-backdrop-filter: none;
  border-left: 1px solid var(--line-soft);
  --bs-offcanvas-width: min(92vw, 380px);
}
.app-offcanvas .offcanvas-header {
  border-bottom: 1px solid var(--line-soft);
  padding: 1rem 1.25rem;
}
.app-offcanvas .offcanvas-title { font-weight: 600; color: var(--ink); }
.app-offcanvas .accordion-item { background: transparent; border: 0; border-bottom: 1px solid var(--line-soft); }
.app-offcanvas .accordion-button {
  background: transparent; color: var(--ink); font-weight: 500;
  padding: .9rem 1.25rem; font-size: .9rem;
}
.app-offcanvas .accordion-button:focus { box-shadow: none; }
.app-offcanvas .accordion-button:not(.collapsed) { color: var(--brand-deep); background: var(--brand-cream); }
.app-offcanvas .accordion-button::after { filter: grayscale(1) opacity(.5); }
.app-offcanvas .accordion-body { padding: .25rem .75rem .75rem; }
.app-offcanvas .app-nav-link {
  color: var(--ink-2); border-radius: var(--r-m);
  padding: .55rem .75rem; margin: .1rem 0;
  font-size: .88rem; transition: all .2s var(--ease);
}
.app-offcanvas .app-nav-link:hover,
.app-offcanvas .app-nav-link:focus {
  color: var(--brand-deep); background: var(--brand-cream);
}
.app-offcanvas .app-nav-link.active {
  color: var(--brand-deep); background: var(--brand-cream); font-weight: 500;
}
.app-offcanvas .app-nav-meta {
  color: var(--ink-3); font-size: .75rem; letter-spacing: .05em;
  text-transform: uppercase; padding: .25rem .75rem;
}
.app-offcanvas hr { border-color: var(--line-soft); opacity: 1; }

/* ----- 5. 按钮 (btn) ---------------------------------------------- */
.btn {
  border-radius: var(--r-m);
  font-weight: 500;
  letter-spacing: .01em;
  transition: all .18s var(--ease);
  padding: .55rem 1.1rem;
  font-size: .9rem;
}
.btn-lg { padding: .8rem 1.5rem; font-size: 1rem; border-radius: var(--r-m); }
.btn-sm { padding: .35rem .8rem; font-size: .82rem; border-radius: var(--r-s); }

.btn-primary {
  background: var(--brand); border-color: var(--brand); color: #fff;
  box-shadow: 0 1px 0 rgba(255,255,255,.25) inset, 0 2px 6px rgba(238,126,45,.22);
}
.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
  background: var(--brand-deep) !important; border-color: var(--brand-deep) !important;
  color: #fff !important;
  box-shadow: 0 4px 12px rgba(238,126,45,.3);
}

.btn-outline-primary {
  background: transparent; color: var(--brand-deep); border-color: var(--brand);
}
.btn-outline-primary:hover, .btn-outline-primary:focus {
  background: var(--brand); color: #fff; border-color: var(--brand);
}

.btn-secondary, .btn-outline-secondary {
  background: var(--surface); color: var(--ink-2); border: 1px solid var(--line);
}
.btn-secondary:hover, .btn-outline-secondary:hover {
  background: var(--bg-2); color: var(--ink); border-color: var(--line);
}

.btn-success {
  background: var(--ok); border-color: var(--ok); color: #fff;
}
.btn-success:hover { background: #3b6d37; border-color: #3b6d37; color: #fff; }

.btn-outline-success { background: transparent; color: var(--ok); border-color: var(--ok); }
.btn-outline-success:hover { background: var(--ok); color: #fff; }

.btn-warning {
  background: var(--warn); border-color: var(--warn); color: #fff;
}
.btn-warning:hover { background: #b16f1f; border-color: #b16f1f; color: #fff; }

.btn-outline-warning { color: var(--warn); border-color: var(--warn); }
.btn-outline-warning:hover { background: var(--warn); color: #fff; }

.btn-danger {
  background: var(--risk); border-color: var(--risk); color: #fff;
}
.btn-danger:hover { background: #9e2f20; border-color: #9e2f20; color: #fff; }

.btn-outline-danger { color: var(--risk); border-color: var(--risk); }
.btn-outline-danger:hover { background: var(--risk); color: #fff; }

.btn-info, .btn-outline-info { color: var(--info); border-color: var(--info); }
.btn-info { background: var(--info); color: #fff; }

.btn-light {
  background: rgba(255,255,255,.9); color: var(--ink); border-color: transparent;
}
.btn-light:hover { background: #fff; color: var(--ink); }

/* ----- 6. 卡片 (card) --------------------------------------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-l);
  box-shadow: var(--shadow-s);
  transition: all .2s var(--ease);
  overflow: hidden;
}
.card:hover {
  box-shadow: var(--shadow-m);
  border-color: var(--line);
}
.card-header {
  background: transparent;
  border-bottom: 1px solid var(--line-soft);
  padding: 1rem 1.25rem;
  font-weight: 600;
  font-size: .95rem;
  color: var(--ink);
}
.card-header.bg-primary { background: var(--brand) !important; color: #fff; }
.card-header.bg-success { background: var(--ok) !important; color: #fff; }
.card-header.bg-warning { background: var(--warn) !important; color: #fff; }
.card-header.bg-danger  { background: var(--risk) !important; color: #fff; }
.card-header.bg-info    { background: var(--info) !important; color: #fff; }
.card-header.bg-secondary { background: var(--ink-2) !important; color: #fff; }
.card-header.bg-dark    { background: var(--ink) !important; color: #fff; }
.card-header.bg-light   { background: var(--bg-2) !important; color: var(--ink); border-bottom-color: var(--line-soft); }
.card-body { padding: 1.25rem; }

/* ----- 7. 表单 (form) --------------------------------------------- */
.form-control, .form-select {
  border-radius: var(--r-m);
  border: 1px solid var(--line);
  padding: .6rem .85rem;
  font-size: .92rem;
  background: var(--surface);
  color: var(--ink);
  transition: border-color .15s, box-shadow .15s;
}
.form-control:focus, .form-select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(238,126,45,.15);
  outline: 0;
}
.form-label { font-weight: 500; color: var(--ink-2); font-size: .88rem; margin-bottom: .35rem; }
.form-text, .text-secondary { color: var(--ink-3) !important; }
.form-check-input:checked {
  background-color: var(--brand); border-color: var(--brand);
}
.form-check-input:focus { box-shadow: 0 0 0 3px rgba(238,126,45,.15); border-color: var(--brand); }

/* ----- 8. Alerts & Badges ----------------------------------------- */
.alert {
  border-radius: var(--r-m);
  padding: .85rem 1.1rem;
  border: 1px solid;
  font-size: .9rem;
}
.alert-primary, .alert-info {
  background: var(--brand-wash); border-color: rgba(238,126,45,.25); color: var(--brand-deep);
}
.alert-success { background: rgba(78,139,73,.1); border-color: rgba(78,139,73,.3); color: #3b6d37; }
.alert-warning { background: rgba(216,138,44,.12); border-color: rgba(216,138,44,.3); color: #8a5314; }
.alert-danger  { background: rgba(198,62,44,.1); border-color: rgba(198,62,44,.3); color: #8a2418; }

.badge {
  font-weight: 500; padding: .35em .7em; border-radius: 999px;
  font-size: .72rem; letter-spacing: .02em;
}
.bg-primary-subtle   { background: var(--brand-wash) !important; color: var(--brand-deep) !important; }
.bg-success-subtle   { background: rgba(78,139,73,.12) !important; color: #3b6d37 !important; }
.bg-warning-subtle   { background: rgba(216,138,44,.15) !important; color: #8a5314 !important; }
.bg-danger-subtle    { background: rgba(198,62,44,.12) !important; color: #8a2418 !important; }
.bg-info-subtle      { background: rgba(46,123,176,.12) !important; color: #1e5a87 !important; }
.bg-secondary-subtle { background: var(--bg-2) !important; color: var(--ink-2) !important; }

.text-primary   { color: var(--brand-deep) !important; }
.text-success   { color: #3b6d37 !important; }
.text-warning   { color: #8a5314 !important; }
.text-danger    { color: var(--risk) !important; }
.text-info      { color: var(--info) !important; }
.text-muted     { color: var(--ink-3) !important; }
.text-gradient {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-deep) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.bg-primary   { background: var(--brand) !important; }
.bg-success   { background: var(--ok) !important; }
.bg-warning   { background: var(--warn) !important; }
.bg-danger    { background: var(--risk) !important; }
.bg-info      { background: var(--info) !important; }
.bg-secondary { background: var(--ink-2) !important; }
.bg-dark      { background: var(--ink) !important; }
.bg-light     { background: var(--bg-2) !important; }

/* ----- 9. 进度条 / 列表 ------------------------------------------- */
.progress {
  background: var(--bg-2);
  border-radius: 999px;
  overflow: hidden;
  height: 10px;
}
.progress-bar { background: var(--brand); }
.progress-bar.bg-success { background: var(--ok) !important; }
.progress-bar.bg-warning { background: var(--warn) !important; }
.progress-bar.bg-danger { background: var(--risk) !important; }

.list-group-item {
  background: var(--surface); border-color: var(--line-soft); color: var(--ink);
  padding: .8rem 1rem;
}
.list-group-item:hover { background: var(--brand-cream); }

hr { border-color: var(--line-soft); opacity: 1; }

/* ----- 10. 页脚 --------------------------------------------------- */
.site-footer {
  background: transparent;
  border-top: 1px solid var(--line-soft);
  color: var(--ink-3) !important;
  font-size: .85rem;
  padding: 2rem 0;
  margin-top: 4rem;
}
.footer-note { color: var(--ink-3); }

/* ----- 11. Page loader -------------------------------------------- */
.page-loader {
  position: fixed; inset: 0; background: var(--bg);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  z-index: 9999; transition: opacity .3s var(--ease);
}
.page-loader.hidden { opacity: 0; pointer-events: none; }
.loader-spinner {
  width: 40px; height: 40px; border: 3px solid var(--line);
  border-top-color: var(--brand); border-radius: 999px;
  animation: spin 1s linear infinite;
}
.loader-text { margin-top: 1rem; color: var(--ink-3); font-size: .9rem; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ===================================================================
   HOME PAGE 专用 (.home-page / .home-hero / .feature-card / .journey-*)
   ================================================================= */
.home-shell { padding-top: 1.5rem; }

.home-hero {
  position: relative;
  padding: 3.5rem 2rem;
  background:
    radial-gradient(ellipse 90% 60% at 80% 0%, var(--brand-wash) 0%, transparent 60%),
    linear-gradient(180deg, var(--brand-cream) 0%, var(--bg) 100%);
  border-radius: var(--r-xl);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}
.home-hero::before {
  content: ""; position: absolute; top: -120px; right: -80px;
  width: 340px; height: 340px; border-radius: 50%;
  background: radial-gradient(circle, rgba(245,162,92,.35) 0%, transparent 70%);
  filter: blur(20px); pointer-events: none;
}

.hero-kicker {
  display: inline-block;
  padding: .3rem .8rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .8rem;
  color: var(--ink-2);
  margin-bottom: 1.25rem;
  font-weight: 500;
}

.hero-title {
  font-size: clamp(2rem, 4.2vw, 3rem);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -.02em;
  margin-bottom: 1.25rem;
}
.hero-title .text-gradient { display: block; margin-top: .2em; }

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--ink-2);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 1.5rem;
}

.hero-badges { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2rem; }
.hero-badge {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .35rem .85rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .82rem;
  color: var(--ink-2);
}
.hero-badge i { color: var(--brand); }

.hero-actions { display: flex; flex-wrap: wrap; gap: .65rem; margin-bottom: .8rem; }
.hero-note { font-size: .85rem; color: var(--ink-3); margin-top: .5rem; }

.hero-panel {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-m);
}
.hero-panel-header { border-bottom: 1px solid var(--line-soft); padding-bottom: 1.25rem; margin-bottom: 1.25rem; }
.hero-panel-chip {
  display: inline-block; padding: .2rem .6rem;
  background: var(--brand-wash); color: var(--brand-deep);
  border-radius: 999px; font-size: .75rem; font-weight: 500;
  margin-bottom: .6rem;
}
.hero-panel h2 { font-size: 1.2rem; line-height: 1.4; margin-bottom: .4rem; }
.hero-panel p { font-size: .9rem; color: var(--ink-3); margin: 0; }

.hero-journey { display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.25rem; }
.hero-journey-item { display: flex; gap: .85rem; align-items: flex-start; }
.hero-journey-index {
  flex: 0 0 auto;
  width: 28px; height: 28px;
  background: var(--brand-cream);
  color: var(--brand-deep);
  border-radius: 8px;
  font-weight: 600; font-size: .78rem;
  display: inline-flex; align-items: center; justify-content: center;
}
.hero-journey-item h3 { font-size: .92rem; margin-bottom: .2rem; }
.hero-journey-item p  { font-size: .82rem; color: var(--ink-3); line-height: 1.55; margin: 0; }

.hero-stats-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem;
  padding-top: 1.25rem; border-top: 1px solid var(--line-soft);
}
.hero-stat { text-align: left; }
.hero-stat span {
  display: block; font-size: .7rem; text-transform: uppercase;
  letter-spacing: .06em; color: var(--ink-3); margin-bottom: .2rem;
}
.hero-stat strong { display: block; font-size: 1rem; color: var(--ink); margin-bottom: .15rem; }
.hero-stat p { font-size: .78rem; color: var(--ink-3); margin: 0; }

/* Section headings */
.section-heading {
  margin: 3rem 0 1.5rem;
  max-width: 720px;
}
.section-heading.compact { margin: 0 0 1rem; }
.section-kicker {
  display: inline-block; padding: .25rem .7rem;
  background: var(--brand-wash); color: var(--brand-deep);
  border-radius: 999px; font-size: .75rem; font-weight: 500;
  margin-bottom: .8rem;
}
.section-heading h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.85rem);
  font-weight: 600; line-height: 1.35;
  color: var(--ink); margin-bottom: .5rem;
}
.section-subtitle { font-size: .95rem; color: var(--ink-3); line-height: 1.65; margin: 0; }

/* Feature cards */
.feature-card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-l);
  padding: 1.75rem;
  transition: all .2s var(--ease);
  display: flex; flex-direction: column; gap: 1rem;
  height: 100%;
}
.feature-card:hover {
  transform: translateY(-2px);
  border-color: var(--brand);
  box-shadow: var(--shadow-m);
}
.feature-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
.feature-icon-primary { background: var(--brand-wash); color: var(--brand-deep); }
.feature-icon-success { background: rgba(78,139,73,.12); color: #3b6d37; }
.feature-icon-info    { background: rgba(46,123,176,.12); color: var(--info); }
.feature-label {
  font-size: .72rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-3); font-weight: 600; display: block; margin-bottom: .3rem;
}
.feature-copy h3 { font-size: 1.05rem; margin-bottom: .5rem; }
.feature-copy p { font-size: .9rem; color: var(--ink-2); line-height: 1.65; margin-bottom: .8rem; }
.feature-list { list-style: none; padding: 0; margin: 0; font-size: .85rem; color: var(--ink-2); }
.feature-list li {
  position: relative; padding-left: 1.25rem; margin-bottom: .35rem;
}
.feature-list li::before {
  content: ""; position: absolute; left: 0; top: .6em;
  width: 14px; height: 2px; background: var(--brand); border-radius: 2px;
}

/* Journey card (底部流程) */
.journey-card {
  background: linear-gradient(180deg, var(--surface) 0%, var(--brand-cream) 100%);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-xl);
  padding: 2rem;
}
.journey-step {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-l);
  padding: 1.25rem; height: 100%;
  position: relative;
}
.journey-step-number {
  position: absolute; top: -14px; left: 1.25rem;
  width: 28px; height: 28px;
  background: var(--brand); color: #fff;
  border-radius: 999px; font-weight: 600; font-size: .85rem;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 3px 8px rgba(238,126,45,.3);
}
.journey-step h3 { font-size: .95rem; margin: .75rem 0 .4rem; }
.journey-step p { font-size: .82rem; color: var(--ink-2); line-height: 1.6; margin: 0; }

/* ===================================================================
   AUTH 页面 (login / register)
   ================================================================= */
.auth-shell { padding: 2rem 0 3rem; }
.auth-story { padding-top: 1rem; }
.auth-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 600;
  color: var(--ink); line-height: 1.3; letter-spacing: -.01em; margin-bottom: 1rem;
}
.auth-subtitle { font-size: .98rem; color: var(--ink-2); line-height: 1.7; margin-bottom: 1.75rem; }

.auth-highlight-grid {
  display: grid; grid-template-columns: 1fr; gap: .75rem; margin-bottom: 1.75rem;
}
.auth-highlight-card {
  display: flex; gap: .85rem; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--line-soft);
  border-radius: var(--r-m); padding: 1rem;
}
.auth-highlight-card i {
  width: 36px; height: 36px; flex: 0 0 auto;
  background: var(--brand-wash); color: var(--brand-deep);
  border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1rem;
}
.auth-highlight-card strong { font-size: .9rem; color: var(--ink); }
.auth-highlight-card p { font-size: .82rem; color: var(--ink-3); margin: .1rem 0 0; }

.auth-guide-card {
  background: var(--brand-cream); border: 1px solid rgba(238,126,45,.2);
  border-radius: var(--r-l); padding: 1.5rem; margin-bottom: 1.5rem;
}
.auth-quicklist {
  list-style: none; padding: 0; margin: 1rem 0 0; counter-reset: step;
}
.auth-quicklist li {
  counter-increment: step;
  padding: .5rem 0 .5rem 2rem; position: relative;
  font-size: .88rem; color: var(--ink-2); line-height: 1.55;
  border-bottom: 1px dashed rgba(238,126,45,.15);
}
.auth-quicklist li:last-child { border-bottom: 0; }
.auth-quicklist li::before {
  content: counter(step); position: absolute; left: 0; top: .5rem;
  width: 22px; height: 22px;
  background: var(--brand); color: #fff;
  border-radius: 999px; font-size: .72rem; font-weight: 600;
  display: inline-flex; align-items: center; justify-content: center;
}

.auth-link-row { display: flex; flex-wrap: wrap; gap: .5rem; }
.auth-link-row .btn { border-radius: 999px; font-size: .82rem; padding: .4rem .9rem; }

.auth-panel {
  position: sticky; top: 5rem;
}
.auth-panel-head { margin-bottom: 1.25rem; }
.auth-icon-wrap {
  width: 56px; height: 56px; margin: 0 auto 1rem;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-soft) 100%);
  color: #fff; border-radius: 16px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 8px 20px rgba(238,126,45,.25);
}
.auth-panel-head h2 { font-size: 1.35rem; margin-bottom: .3rem; }
.auth-panel-head p { color: var(--ink-3); font-size: .88rem; margin: 0; }

.auth-form-card { border: 1px solid var(--line-soft); box-shadow: var(--shadow-m); border-radius: var(--r-l); }
.auth-form-card .card-body { padding: 1.5rem; }

.auth-note {
  margin-top: 1rem; display: flex; gap: .5rem; align-items: flex-start;
  padding: .75rem .9rem; background: var(--bg-2); border-radius: var(--r-m);
  font-size: .82rem; color: var(--ink-3);
}
.auth-note i { color: var(--info); flex: 0 0 auto; margin-top: .15rem; }

/* ===================================================================
   通用页面外壳 / 通用标题栏
   ================================================================= */
.page-shell { padding-top: 1rem; padding-bottom: 3rem; }

.yl-page-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem;
}
.yl-page-head h1, .yl-page-head h2 {
  font-size: clamp(1.35rem, 2.2vw, 1.75rem); margin: 0 0 .25rem;
  font-weight: 600; letter-spacing: -.01em;
}
.yl-page-head .sub { color: var(--ink-3); font-size: .9rem; }

/* 快速 stat 小卡 */
.yl-stat {
  padding: 1rem 1.1rem; border-radius: var(--r-l);
  background: var(--surface); border: 1px solid var(--line-soft);
}
.yl-stat-label { font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: .45rem; font-weight: 600; }
.yl-stat-val { font-size: 1.7rem; font-weight: 600; color: var(--ink); line-height: 1.1; font-variant-numeric: tabular-nums; }
.yl-stat-val small { font-size: .85rem; color: var(--ink-3); font-weight: 400; margin-left: .25rem; }
.yl-stat-trend { margin-top: .35rem; font-size: .78rem; color: var(--ink-3); }
.yl-stat-trend.up { color: #3b6d37; }
.yl-stat-trend.warn { color: #8a5314; }
.yl-stat-trend.down { color: var(--risk); }

/* ===================================================================
   AI 浮窗 (兼容原 .ai-floating-chat 样式)
   ================================================================= */
.ai-floating-chat-toggle {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-deep) 100%) !important;
  box-shadow: 0 8px 20px rgba(238,126,45,.35) !important;
}

/* ===================================================================
   老人模式  body.elder-mode
   ================================================================= */
body.elder-mode {
  font-size: 18px;
  line-height: 1.8;
}
body.elder-mode .hero-title { font-size: clamp(2.2rem, 5vw, 3.4rem); }
body.elder-mode .hero-subtitle { font-size: 1.2rem; line-height: 1.85; }
body.elder-mode h1 { font-size: 2rem; }
body.elder-mode h2 { font-size: 1.5rem; }
body.elder-mode h3 { font-size: 1.2rem; }

body.elder-mode .btn { padding: .85rem 1.4rem; font-size: 1.05rem; font-weight: 500; }
body.elder-mode .btn-lg { padding: 1rem 1.75rem; font-size: 1.2rem; }
body.elder-mode .btn-sm { padding: .55rem 1rem; font-size: .95rem; }

body.elder-mode .form-control,
body.elder-mode .form-select {
  padding: .85rem 1rem; font-size: 1.05rem;
}
body.elder-mode .form-label { font-size: 1rem; }

body.elder-mode .card-body { padding: 1.6rem; }
body.elder-mode .card-header { padding: 1.2rem 1.5rem; font-size: 1.1rem; }

body.elder-mode .hero-badge, body.elder-mode .hero-kicker { font-size: 1rem; }
body.elder-mode .feature-list { font-size: 1rem; }

/* 提高对比度 */
body.elder-mode { color: #000; background: #FFF9EF; }
body.elder-mode .text-muted, body.elder-mode .form-text,
body.elder-mode .text-secondary { color: #5a544a !important; }
body.elder-mode .navbar { border-bottom: 2px solid var(--line); }
body.elder-mode .card { border-width: 2px; }

/* ===================================================================
   辅助工具类 / 动效
   ================================================================= */
.yl-fade-up { animation: ylFadeUp .55s var(--ease) both; }
.yl-fade-up-d1 { animation-delay: .06s; }
.yl-fade-up-d2 { animation-delay: .12s; }
.yl-fade-up-d3 { animation-delay: .18s; }
.yl-fade-up-d4 { animation-delay: .24s; }
@keyframes ylFadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* ===================================================================
   响应式 — 小屏适配
   ================================================================= */
@media (max-width: 768px) {
  .home-hero { padding: 2.25rem 1.25rem; }
  .hero-title { font-size: 1.75rem; }
  .hero-stats-grid { grid-template-columns: 1fr 1fr; }
  .hero-stat:nth-child(3) { grid-column: 1 / -1; }
  .section-heading { margin: 2rem 0 1.25rem; }
  .brand-tagline { display: none !important; }
  .auth-panel { position: static; margin-top: 1rem; }
}