/* ==========================================================================
   多囊肾病友网 — 全局样式表
   多囊肾患者支持网站 · 静态 POC
   ========================================================================== */

/* ---------- 设计令牌 ---------- */
:root {
  /* 默认：墨韵深色模式（可通过主题切换器切换） */
  --color-primary: #5fa8bf;
  --color-primary-dark: #4a8a9f;
  --color-primary-light: #1a2a32;
  --color-primary-gradient: linear-gradient(135deg, #5fa8bf 0%, #7ac4d8 100%);

  /* 强调色：温暖珊瑚琥珀 */
  --color-accent: #e0a878;
  --color-accent-light: #2a2018;
  --color-accent-gradient: linear-gradient(135deg, #e0a878 0%, #f0c094 100%);

  /* 辅助色：柔和绿（安全提示） */
  --color-safe: #6dba88;
  --color-safe-bg: #1a2a20;

  /* 文字 */
  --color-text: #d8dde2;
  --color-text-light: #9aa4b0;
  --color-text-lighter: #6b7682;

  /* 背景 */
  --color-bg: #1a1d23;
  --color-bg-alt: #232830;
  --color-bg-warm: #252220;
  --color-border: #353b45;
  --color-border-light: #2d333d;

  /* 危险 */
  --color-danger: #d97070;
  --color-danger-bg: #2a1d1d;

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;

  /* 布局 */
  --max-width: 920px;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  /* 阴影：柔和多层 */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25), 0 1px 2px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35), 0 4px 8px rgba(0, 0, 0, 0.25);
  --shadow-warm: 0 4px 16px rgba(224, 168, 120, 0.15), 0 2px 4px rgba(224, 168, 120, 0.1);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.75;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- 默认深色模式调整（:root 即 dark，无 data-theme 时生效） ---------- */
body { color-scheme: dark; }
.medical-alert { background: #2a2218; border-color: #6b5535; }
.card { background: #232830; }
.q-card { background: #232830; }
input, textarea, select {
  background: #232830;
  color: #d8dde2;
  border-color: #353b45;
}
.source-ref { background: #232830; }
.page-hero { background: linear-gradient(135deg, #1a2a32 0%, #232830 100%); }
.site-header { background: #1a1d23; }
.site-footer { background: #15171c; border-color: #353b45; }

/* ---------- 跳转链接（无障碍） ---------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 0.6rem 1.2rem;
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
  font-size: 0.9rem;
  text-decoration: none;
}
.skip-link:focus { top: 0; }

/* ---------- 页头 ---------- */
.site-header {
  background: var(--color-primary-gradient);
  color: #fff;
  padding: 0;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}
/* 装饰光晕 */
.site-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.site-header::after {
  content: '';
  position: absolute;
  bottom: -60%;
  left: -5%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(232,154,108,0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  min-height: 68px;
  position: relative;
  z-index: 1000;
}
.site-logo {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0;
}
.site-logo::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ---------- 导航 ---------- */
.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem;
}
.site-nav a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-pill);
  transition: var(--transition);
  display: flex;
  align-items: center;
  min-height: 44px;
  font-weight: 400;
}
.site-nav a:hover,
.site-nav a:focus,
.site-nav a[aria-current="page"] {
  background: rgba(255,255,255,0.18);
  color: #fff;
  backdrop-filter: blur(4px);
}

/* ---------- 汉堡菜单按钮（桌面端隐藏，移动端显示） ---------- */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  min-height: 44px;
  min-width: 44px;
  border-radius: var(--radius-pill);
  transition: var(--transition);
}
.nav-hamburger:hover,
.nav-hamburger:focus {
  background: rgba(255,255,255,0.18);
  outline: none;
}
.nav-hamburger__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-hamburger.is-active .nav-hamburger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-hamburger.is-active .nav-hamburger__bar:nth-child(2) {
  opacity: 0;
}
.nav-hamburger.is-active .nav-hamburger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 导航遮罩 ---------- */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 998;
  opacity: 0;
  transition: opacity 0.3s;
}
.nav-overlay.is-active {
  display: block;
  opacity: 1;
}

/* ---------- 主区域 ---------- */
.site-main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  width: 100%;
}

/* ---------- 页面标题区 ---------- */
.page-hero {
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  margin-bottom: 2.5rem;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(58, 143, 163, 0.08);
}
/* 装饰圆 */
.page-hero::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(58,143,163,0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: 20%;
  width: 80px;
  height: 80px;
  background: radial-gradient(circle, rgba(232,154,108,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.page-hero h1 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 0.6rem;
  letter-spacing: 0.02em;
  position: relative;
}
.page-hero p {
  color: var(--color-text-light);
  font-size: 0.98rem;
  position: relative;
}

/* ---------- Hero 每日一言（小型动画彩蛋） ---------- */
.hero-daily {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--color-primary);
  margin-top: 1rem;
  min-height: 1.5em;
  opacity: 0;
  font-style: italic;
}

/* 动画效果 A：逐字淡入 */
.hero-daily--fade-chars .hero-daily__char {
  display: inline-block;
  opacity: 0;
  animation: charFadeIn 0.5s ease forwards;
}
@keyframes charFadeIn {
  to { opacity: 1; }
}

/* 动画效果 B：整体打字机 */
.hero-daily--typewriter {
  border-right: 2px solid var(--color-primary);
  overflow: hidden;
  white-space: nowrap;
  animation: typewriter 2s steps(30) forwards, blinkCursor 0.7s step-end infinite;
}
@keyframes typewriter {
  from { width: 0; }
  to { width: 100%; }
}
@keyframes blinkCursor {
  50% { border-color: transparent; }
}

/* 动画效果 C：从下方滑入 */
.hero-daily--slide-up {
  transform: translateY(12px);
  animation: slideUp 0.8s ease 0.3s forwards;
}
@keyframes slideUp {
  to { opacity: 1; transform: translateY(0); }
}

/* 动画效果 D：逐字弹跳 */
.hero-daily--bounce .hero-daily__char {
  display: inline-block;
  opacity: 0;
  transform: translateY(8px);
  animation: charBounce 0.6s ease forwards;
}
@keyframes charBounce {
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 排版 ---------- */
h1, h2, h3, h4 { line-height: 1.35; color: var(--color-text); }
h2 {
  font-size: 1.35rem;
  margin: 2.5rem 0 1rem;
  color: var(--color-primary-dark);
  font-weight: 600;
  position: relative;
  padding-left: 1rem;
}
h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 1.1em;
  background: var(--color-primary-gradient);
  border-radius: var(--radius-pill);
}
h3 {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.6rem;
  font-weight: 600;
  color: var(--color-text);
}
p { margin-bottom: 1rem; }
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
}
a:hover, a:focus { color: var(--color-primary-dark); text-decoration: underline; }

/* ---------- 卡片网格 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.2rem;
  margin: 1.5rem 0;
}
.card {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xs);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-primary-gradient);
  opacity: 0;
  transition: var(--transition);
}
.card:hover, .card:focus {
  box-shadow: var(--shadow-md);
  border-color: rgba(58, 143, 163, 0.2);
  transform: translateY(-3px);
  text-decoration: none;
}
.card:hover::before, .card:focus::before {
  opacity: 1;
}
.card__icon {
  font-size: 1.8rem;
  margin-bottom: 0.8rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
}
.card__title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--color-primary-dark);
}
.card__desc {
  font-size: 0.88rem;
  color: var(--color-text-light);
  flex: 1;
  line-height: 1.65;
}

/* ---------- 页脚医疗提示紧凑条 ---------- */
.footer-alert {
  background: var(--color-danger-bg);
  border-left: 3px solid var(--color-danger);
  border-radius: var(--radius-sm);
  padding: 0.6rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.8rem;
  color: var(--color-text);
  line-height: 1.6;
}
.footer-alert strong { color: var(--color-danger); }

/* ---------- 医疗安全提示框 ---------- */
.medical-alert {
  background: var(--color-danger-bg);
  border: 1px solid rgba(201, 90, 90, 0.2);
  border-left: 4px solid var(--color-danger);
  border-radius: var(--radius-sm);
  padding: 1rem 1.2rem;
  margin: 1.5rem 0;
}
.medical-alert__title {
  font-weight: 600;
  color: var(--color-danger);
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
}
.medical-alert__body {
  font-size: 0.86rem;
  color: var(--color-text);
  line-height: 1.65;
}

/* ---------- 医疗提示（绿色安全框） ---------- */
.medical-note {
  background: var(--color-safe-bg);
  border: 1px solid rgba(91, 168, 118, 0.2);
  border-left: 4px solid var(--color-safe);
  border-radius: var(--radius-sm);
  padding: 1rem 1.2rem;
  margin: 1.5rem 0;
}
.medical-note__title {
  font-weight: 600;
  color: var(--color-safe);
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
}
.medical-note__body { font-size: 0.86rem; line-height: 1.65; }

/* ---------- 每日一言彩蛋 ---------- */
.daily-egg {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.8);
  font-size: 0.8rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
  min-height: 44px;
  backdrop-filter: blur(4px);
}
.daily-egg:hover, .daily-egg:focus {
  border-color: var(--color-accent);
  color: #fff;
  background: rgba(232,154,108,0.2);
}
.daily-egg__icon {
  font-size: 1rem;
  transition: transform 0.6s ease;
}
.daily-egg:hover .daily-egg__icon {
  transform: rotate(180deg);
}

/* 每日一言浮层 */
.daily-modal {
  position: fixed;
  inset: 0;
  background: rgba(42, 109, 126, 0.4);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.daily-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}
.daily-modal__card {
  background: var(--color-primary-gradient);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  max-width: 420px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-lg);
  transform: scale(0.9) translateY(10px);
  transition: transform 0.3s ease;
  position: relative;
  overflow: hidden;
}
.daily-modal__card::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.daily-modal.is-open .daily-modal__card {
  transform: scale(1) translateY(0);
}
.daily-modal__quote {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.75;
  margin-bottom: 1rem;
  position: relative;
}
.daily-modal__author {
  font-size: 0.82rem;
  opacity: 0.75;
  margin-bottom: 1.5rem;
  position: relative;
}
.daily-modal__close {
  background: rgba(255,255,255,0.2);
  border: none;
  color: #fff;
  padding: 0.5rem 1.8rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-size: 0.85rem;
  transition: var(--transition);
  min-height: 44px;
  font-family: var(--font-sans);
  position: relative;
}
.daily-modal__close:hover {
  background: rgba(255,255,255,0.3);
}

/* 每日一言独立页保留大块展示 */
.daily-page-word {
  background: var(--color-primary-gradient);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  margin: 2rem 0;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}
.daily-page-word::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.daily-page-word::after {
  content: '';
  position: absolute;
  bottom: -50px;
  left: -20px;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(232,154,108,0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.daily-page-word__quote {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  line-height: 1.7;
  margin-bottom: 1rem;
  position: relative;
}
.daily-page-word__author {
  font-size: 0.88rem;
  opacity: 0.8;
  position: relative;
}

/* ---------- 来源标注 ---------- */
.source-ref {
  font-size: 0.8rem;
  color: var(--color-text-lighter);
  border-top: 1px solid var(--color-border-light);
  padding-top: 0.8rem;
  margin-top: 2rem;
  line-height: 1.7;
}
.source-ref strong { color: var(--color-text-light); }

/* ---------- 元数据标签 ---------- */
.meta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.8rem 0;
}
.meta-tag {
  font-size: 0.76rem;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-pill);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text-light);
  font-weight: 400;
}
.meta-tag--evidence { background: #eef4fb; border-color: #c8d8e8; color: #4a6a8a; }
.meta-tag--date { background: #f0f0f0; border-color: #ddd; }

/* ---------- 列表 ---------- */
ul, ol { margin: 0 0 1rem 1.3rem; }
li { margin-bottom: 0.4rem; }

/* ---------- 引用块 ---------- */
blockquote {
  margin: 1rem 0;
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-primary-dark);
  font-size: 0.95rem;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 2.5rem 0 2rem;
  margin-top: 2rem;
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 10%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(232,154,108,0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
}
.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.2rem;
  align-items: center;
}
.site-footer__nav a {
  color: rgba(255,255,255,0.65);
  font-size: 0.85rem;
  text-decoration: none;
  transition: var(--transition);
}
.site-footer__nav a:hover { color: #fff; }
.site-footer__disclaimer {
  font-size: 0.8rem;
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 1rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.55);
}
.site-footer__copy {
  font-size: 0.78rem;
  margin-top: 0.8rem;
  opacity: 0.5;
}
.site-footer__ai-note {
  font-size: 0.74rem;
  margin-top: 0.4rem;
  opacity: 0.4;
  line-height: 1.5;
}

/* ---------- 快捷录入 ---------- */
.quick-tabs {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 1.2rem;
}
.quick-tab {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--color-text);
  transition: all 0.2s;
  white-space: nowrap;
}
.quick-tab.active {
  background: var(--color-primary-gradient);
  color: #fff;
  border-color: var(--color-primary);
}
.quick-tab:hover:not(.active) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.quick-panel { display: none; }
.quick-panel.active { display: block; }
.quick-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  align-items: flex-end;
}
.quick-field { flex: 1; min-width: 120px; }
.quick-field label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 0.3rem;
}
.quick-field input {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  background: var(--color-bg);
  color: var(--color-text);
}
.quick-field input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}
.quick-btn {
  padding: 0.6rem 1.5rem;
  background: var(--color-primary-gradient);
  color: #fff;
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-size: 0.9rem;
  white-space: nowrap;
  min-height: 44px;
}
.quick-btn:hover { opacity: 0.9; }
.quick-chips {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 0.8rem;
}
.quick-chip {
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--color-text);
  transition: all 0.15s;
  min-height: 44px;
}
.quick-chip.selected {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}
.quick-chip:hover:not(.selected) {
  border-color: var(--color-primary);
}
.quick-options {
  margin-top: 0.6rem;
  font-size: 0.82rem;
  color: var(--color-text-light);
}
.quick-options summary {
  cursor: pointer;
  user-select: none;
  padding: 0.3rem 0;
}
.quick-options[open] summary { margin-bottom: 0.5rem; }
.quick-options input[type="date"],
.quick-options input[type="text"] {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  width: 100%;
  margin-bottom: 0.4rem;
  background: var(--color-bg);
  color: var(--color-text);
}
.quick-hint {
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-top: 0.4rem;
}
.quick-feedback {
  display: none;
  padding: 0.5rem 0.8rem;
  margin-top: 0.6rem;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-primary-dark);
}


/* ---------- 首页搜索+常见问题双列 ---------- */
.home-search-row {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}
.home-search-row .home-search { flex: 1; }
.home-faq-aside {
  flex-shrink: 0;
  width: 260px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
}
.home-faq-aside h3 {
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
  color: var(--color-text-light);
}
.home-faq-aside nav {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.home-faq-aside a {
  font-size: 0.85rem;
  color: var(--color-primary);
  text-decoration: none;
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--color-border-light);
  transition: color 0.2s;
}
.home-faq-aside a:last-child { border-bottom: none; }
.home-faq-aside a:hover { color: var(--color-primary-dark); }
.home-search__faq-link {
  margin-left: auto;
  font-weight: 600;
  color: var(--color-primary-dark);
  white-space: nowrap;
}
.home-search__faq-link:hover { color: var(--color-primary); }
.home-search__news-link {
  font-weight: 600;
  color: var(--color-primary-dark);
  white-space: nowrap;
}
.home-search__news-link:hover { color: var(--color-primary); }
@media (max-width: 640px) {
  .home-search-row { flex-direction: column; }
  .home-faq-aside { width: 100%; }
}


/* ---------- 语言切换下拉（P-013，main.js 注入） ---------- */
.lang-dd { position: relative; display: inline-flex; }
.lang-dd__btn {
  background: none; border: none; padding: 0; margin: 0;
  font: inherit; font-size: 0.85em; color: var(--color-nav-link, inherit);
  cursor: pointer; white-space: nowrap;
}
.lang-dd__btn:hover { color: var(--color-primary); }
.lang-dd__menu {
  position: fixed; z-index: 70;
  min-width: 110px; padding: 0.35rem;
  background: var(--color-bg, #fff);
  border: 1px solid var(--color-border, #ddd); border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.16);
  display: none;
}
.lang-dd__menu.lang-dd__menu--open { display: block; }
.lang-dd__menu a {
  display: block; padding: 0.4rem 0.7rem; border-radius: 5px;
  font-size: 0.85rem; color: var(--color-text); text-decoration: none;
}
.lang-dd__menu a:hover, .lang-dd__menu a:focus-visible {
  background: var(--color-bg-alt, #f5f5f5); color: var(--color-primary-dark); outline: none;
}


/* ---------- 术语链接 ---------- */
.term-link {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 2px;
}
.term-link:hover {
  color: var(--color-primary-dark);
  text-decoration-style: solid;
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  /* 汉堡菜单显示 */
  .nav-hamburger { display: flex; }
  .site-header__inner { flex-direction: row; padding: 0.5rem 1rem; gap: 0.5rem; flex-wrap: nowrap; min-height: 52px; }
  .site-logo { font-size: 1rem; white-space: nowrap; flex-shrink: 0; }
  /* 导航变抽屉 */
  .site-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 280px;
    height: 100%;
    background: var(--color-primary-gradient);
    padding: 4rem 1rem 1rem;
    z-index: 999;
    overflow-y: auto;
    transition: right 0.3s ease;
    box-shadow: -4px 0 20px rgba(0,0,0,0.2);
  }
  .site-nav.is-open { right: 0; }
  .site-nav ul {
    flex-direction: column;
    gap: 0.3rem;
    flex-wrap: nowrap;
  }
  .site-nav li { width: 100%; }
  .site-nav a {
    font-size: 0.95rem;
    padding: 0.7rem 1rem;
    min-height: 44px;
    width: 100%;
    justify-content: flex-start;
    border-radius: var(--radius);
  }
  /* English 在抽屉中显示完整文字 */
  .nav-lang__text { display: inline; }
  .nav-lang__icon { font-size: 1rem; margin-right: 0.3rem; }
  /* Hero 紧凑 */
  .page-hero--compact { padding: 0.8rem 1rem; margin-bottom: 0.6rem; }
  .page-hero--compact h1 { font-size: 1.05rem; margin-bottom: 0.2rem; }
  .page-hero--compact .hero-daily { font-size: 0.78rem; margin-top: 0.3rem; }
  .page-hero { padding: 1.2rem 1rem; border-radius: var(--radius); }
  .page-hero h1 { font-size: 1.15rem; }
  .hero-daily { font-size: 0.8rem; }
  .daily-word__quote, .daily-page-word__quote { font-size: 1.15rem; }
  .daily-page-word { padding: 2rem 1.2rem; }
  /* 管理工具两列 */
  .card-grid { grid-template-columns: repeat(2, 1fr); gap: 0.6rem; }
  .card { padding: 0.8rem; }
  .card__icon { font-size: 1.3rem; }
  .card__title { font-size: 0.85rem; }
  .card__desc { font-size: 0.75rem; line-height: 1.4; }
  .question-grid { grid-template-columns: 1fr !important; }
  .site-main { padding: 1rem 0.8rem; }
  h2 { font-size: 1.05rem; }
  /* 搜索紧凑 */
  .home-search--compact { margin: 0 0 1rem; }
  .home-search form { flex-direction: row; }
  .home-search button { width: auto; padding: 0.5rem 0.8rem; font-size: 0.85rem; }
  .home-search--compact input { padding: 0.5rem 0.7rem; font-size: 0.9rem; }
  .home-search__suggestions { gap: 0.3rem; margin-top: 0.4rem; flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 0.3rem; }
  .home-search__label { font-size: 0.75rem; flex-shrink: 0; }
  .home-search__suggestions a { padding: 0.15rem 0.5rem; font-size: 0.75rem; min-height: 32px; white-space: nowrap; flex-shrink: 0; }
}

/* ---------- 首页紧凑 Hero ---------- */
.page-hero--compact {
  padding: 1.5rem 1.5rem;
  margin-bottom: 1rem;
}
.page-hero--compact h1 {
  font-size: 1.5rem;
  margin-bottom: 0.3rem;
}
.page-hero--compact .hero-daily {
  margin-top: 0.5rem;
  font-size: 0.85rem;
}

/* ---------- 首页紧凑搜索 ---------- */
.home-search--compact {
  margin: 0 0 1.5rem;
}
.home-search--compact form {
  max-width: 100%;
}
.home-search--compact input {
  padding: 0.7rem 1rem;
  font-size: 1rem;
}

/* ---------- 搜索引导标签 ---------- */
.home-search__suggestions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.6rem;
}
.home-search__label {
  font-size: 0.82rem;
  color: var(--color-text-lighter);
}
.home-search__suggestions a {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  color: var(--color-primary);
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
  min-height: 44px;
}
.home-search__suggestions a:hover,
.home-search__suggestions a:focus {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

/* ---------- 工具卡片状态指示器 ---------- */
.card__status {
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px dashed var(--color-border-light);
  font-size: 0.78rem;
  color: var(--color-safe);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.card__status::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-safe);
  flex-shrink: 0;
}

/* ---------- 常见问题快捷链接 ---------- */
.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}
.quick-links a {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  color: var(--color-primary);
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.quick-links a:hover,
.quick-links a:focus {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

/* ---------- 首页搜索区 ---------- */
.home-search {
  margin: 1.5rem 0 2rem;
}
.home-search form {
  display: flex;
  gap: 0.5rem;
  max-width: 600px;
  margin: 0 auto;
}
.home-search input {
  flex: 1;
  padding: 0.9rem 1.2rem;
  font-size: 1.1rem;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  outline: none;
  min-height: 48px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.home-search input:focus {
  border-color: var(--color-primary-dark);
  box-shadow: 0 0 0 3px rgba(58, 143, 163, 0.15);
}
.home-search button {
  padding: 0.9rem 1.5rem;
  font-size: 1rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  min-height: 48px;
  min-width: 64px;
  transition: background 0.2s, transform 0.1s;
}
.home-search button:hover {
  background: var(--color-primary-dark);
}
.home-search button:active {
  transform: scale(0.97);
}
.home-search__hint {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 0.5rem;
}

/* ---------- 问题卡片（首页入口） ---------- */
.question-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.8rem;
  margin-bottom: 2rem;
}
.q-card {
  display: block;
  padding: 1rem 1.2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
  background: #fff;
}
.q-card:hover, .q-card:focus {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
  text-decoration: none;
}
.q-card__title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
}
.q-card__desc {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 0.3rem;
}

/* ---------- FAQ 相关问题 ---------- */
.faq-related {
  margin-top: 1rem;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--color-border);
  font-size: 0.9rem;
}
.faq-related strong {
  color: var(--color-text-light);
  display: block;
  margin-bottom: 0.5rem;
}
.faq-related ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.faq-related li {
  margin-bottom: 0.4rem;
}
.faq-related a {
  color: var(--color-primary);
  text-decoration: none;
  display: inline-block;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-pill);
  background: var(--color-primary-light);
  font-size: 0.85rem;
  transition: background 0.2s, color 0.2s;
}
.faq-related a:hover {
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
}

/* ---------- FAQ 锚点偏移（避免被 sticky header 遮挡） ---------- */
.faq-item {
  scroll-margin-top: 80px;
}

/* ---------- 知识页"你可能还想问" ---------- */
.related-questions {
  background: var(--color-bg-alt);
  padding: 1.2rem 1.5rem;
  border-radius: var(--radius);
  margin: 1.5rem 0;
  border-left: 4px solid var(--color-accent);
}
.related-questions h2 {
  font-size: 1.1rem;
  margin-bottom: 0.8rem;
  padding-left: 0;
}
.related-questions h2::before {
  display: none;
}
.related-questions ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.related-questions li {
  margin-bottom: 0.5rem;
}
.related-questions a {
  color: var(--color-primary);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 0.2s;
}
.related-questions a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* ---------- hero 每日一言 fallback（JS 失败时仍可见） ---------- */
.hero-daily {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--color-primary);
  margin-top: 1rem;
  min-height: 1.5em;
  opacity: 0.8;
  font-style: italic;
}
.hero-daily:empty {
  opacity: 0;
}
/* 动画类会覆盖 opacity */

/* ---------- AI 声明可见性提升 ---------- */
.site-footer__ai-note {
  font-size: 0.8rem;
  margin-top: 0.6rem;
  opacity: 0.65;
  line-height: 1.6;
  padding: 0.5rem 0.8rem;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-sm);
}

/* ---------- 聚焦可见性 ---------- */
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ---------- 分享组件 ---------- */
/* 头部导航分享按钮：视觉对齐 .site-nav a */
.nav-share__btn {
  color: rgba(255,255,255,0.85);
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-pill);
  transition: var(--transition);
  display: flex;
  align-items: center;
  min-height: 44px;
  cursor: pointer;
}
.nav-share__btn:hover,
.nav-share__btn:focus {
  background: rgba(255,255,255,0.18);
  color: #fff;
  backdrop-filter: blur(4px);
}

/* 文章页底部分享条 */
.share-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 2rem 0;
  padding: 1rem 1.2rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.share-bar__hint {
  font-size: 0.92rem;
  color: var(--color-text-light);
}
.share-bar__btn {
  background: var(--color-primary-gradient);
  color: #fff;
  border: none;
  padding: 0.5rem 1.4rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  min-height: 44px;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.share-bar__btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* 工具页分享按钮（page-hero 内） */
.share-tool-btn {
  margin-top: 0.8rem;
  background: var(--color-primary-gradient);
  color: #fff;
  border: none;
  padding: 0.5rem 1.4rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  min-height: 44px;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  position: relative;
}
.share-tool-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* 分享浮层（中性卡片，区别于每日一言渐变卡） */
.share-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.share-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}
.share-modal__card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: var(--radius-lg);
  padding: 1.8rem 1.6rem;
  max-width: 380px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-lg);
  transform: scale(0.92) translateY(10px);
  transition: transform 0.3s ease;
}
.share-modal.is-open .share-modal__card {
  transform: scale(1) translateY(0);
}
.share-modal__heading {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.share-modal__title {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 1rem;
  word-break: break-all;
}
.share-modal__qr {
  margin: 0 auto 0.8rem;
  width: 200px;
  height: 200px;
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 10px;
}
.share-modal__qr canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.share-modal__hint {
  font-size: 0.82rem;
  color: var(--color-text-lighter);
  margin-bottom: 0.8rem;
}
.share-modal__privacy {
  font-size: 0.78rem;
  color: var(--color-safe);
  margin-bottom: 0.8rem;
}
.share-modal__actions {
  display: flex;
  gap: 0.8rem;
  justify-content: center;
}
.share-modal__btn {
  padding: 0.5rem 1.4rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  min-height: 44px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  word-break: break-all;
}
.share-modal__btn:hover {
  border-color: var(--color-primary);
}
.share-modal__copy {
  background: var(--color-primary-gradient);
  color: #fff;
  border: none;
}

/* ---------- 阅读排版优化（P-010） ---------- */
body { font-size: 17px; }
.site-main p, .site-main li { line-height: 1.8; }

/* ---------- 阅读进度条 ---------- */
.reading-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  background: var(--color-primary); z-index: 999;
  transition: width 0.1s linear; pointer-events: none;
}

/* ---------- 通用组件：chip / badge / key-points / page-meta-top ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.35rem 0.8rem; border: 1px solid var(--color-border);
  border-radius: 999px; font-size: 0.83rem; color: var(--color-text);
  background: var(--color-bg-alt); text-decoration: none; min-height: 36px;
}
.chip:hover { border-color: var(--color-primary); }
.chip__val { color: var(--color-text-light); }
.chip--empty .chip__val { color: var(--color-text-lighter); }

.badge {
  font-size: 0.72rem; padding: 0.08rem 0.55rem; border-radius: 10px;
  white-space: nowrap; font-weight: 600;
}
.badge--primary { background: rgba(95,168,191,0.16); color: var(--color-primary); }
.badge--safe { background: rgba(109,186,136,0.16); color: var(--color-safe); }
.badge--accent { background: rgba(224,168,120,0.16); color: var(--color-accent); }

.key-points {
  background: var(--color-bg-warm);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: 8px; padding: 0.9rem 1.2rem; margin: 1.2rem 0;
  font-size: 0.95rem;
}
.key-points strong { color: var(--color-primary-dark); }

.page-meta-top {
  font-size: 0.82rem; color: var(--color-text-lighter);
  margin: -0.4rem 0 1rem;
}

/* ---------- 主题面板字号控件 ---------- */
.theme-switcher__fontsize {
  border-top: 1px solid var(--color-border-light); margin-top: 0.4rem;
  padding-top: 0.5rem; display: flex; align-items: center; gap: 0.5rem;
}
.theme-switcher__fontsize-label { font-size: 0.8rem; color: var(--color-text-light); flex: 1; }
.theme-switcher__fs-btn {
  width: 32px; height: 32px; border: 1px solid var(--color-border);
  border-radius: 6px; background: var(--color-bg); color: var(--color-text);
  font-size: 0.85rem; cursor: pointer;
}
.theme-switcher__fs-btn:hover { border-color: var(--color-primary); }
.theme-switcher__fs-val { font-size: 0.8rem; min-width: 2.5em; text-align: center; color: var(--color-text); }