/* =========================================================
   小火苗 · 小程序宣传主题
   设计 token 集中在 :root；移动端优先；无外部依赖。
   ========================================================= */

:root {
  /* 品牌（小火苗 · 暖橙） */
  --xhm-primary: #ff6b35;
  --xhm-primary-dark: #e8501c;
  --xhm-primary-soft: #fff1ea;
  --xhm-amber: #ffb703;

  /* 中性色 */
  --xhm-text: #2a2438;
  --xhm-text-soft: #4a4356;
  --xhm-muted: #6b6b73;
  --xhm-border: #f0e6e0;
  --xhm-paper: #fffbf8;
  --xhm-bg: #ffffff;

  /* 形状与阴影 */
  --xhm-radius: 18px;
  --xhm-radius-sm: 12px;
  --xhm-radius-pill: 999px;
  --xhm-shadow: 0 18px 40px -20px rgba(232, 80, 28, .35);
  --xhm-shadow-sm: 0 8px 20px -12px rgba(232, 80, 28, .28);

  /* 布局 */
  --xhm-container: 1100px;
  --xhm-reading: 720px;

  --xhm-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
}

/* ---------- 基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  color: var(--xhm-text);
  background-color: var(--xhm-bg);
  font-family: var(--xhm-font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
video,
svg {
  max-width: 100%;
  height: auto;
}

::selection {
  background: var(--xhm-primary);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--xhm-primary-dark);
  outline-offset: 2px;
}

a {
  color: var(--xhm-primary-dark);
  text-decoration: none;
  transition: color .2s ease;
}

a:hover {
  color: var(--xhm-primary);
}

h1,
h2,
h3,
h4 {
  margin: 0 0 .5em;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--xhm-text);
}

p {
  margin: 0 0 1em;
}

.container {
  width: 100%;
  max-width: var(--xhm-container);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 100;
  padding: .5rem 1rem;
  background: var(--xhm-primary-dark);
  color: #fff;
  border-radius: 0 0 .5rem 0;
}

.skip-link:focus {
  left: 0;
  color: #fff;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .7rem 1.4rem;
  font-size: .95rem;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  border-radius: var(--xhm-radius-pill);
  cursor: pointer;
  transition: transform .2s ease, background-color .2s ease, box-shadow .2s ease, color .2s ease;
}

.btn--primary {
  background: linear-gradient(135deg, var(--xhm-primary), var(--xhm-primary-dark));
  color: #fff;
  box-shadow: var(--xhm-shadow-sm);
}

.btn--primary:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--xhm-shadow);
}

.btn--ghost {
  background: transparent;
  border-color: var(--xhm-border);
  color: var(--xhm-text-soft);
}

.btn--ghost:hover {
  border-color: var(--xhm-primary);
  color: var(--xhm-primary-dark);
}

.btn--light {
  background: #fff;
  color: var(--xhm-primary-dark);
}

.btn--light:hover {
  color: var(--xhm-primary);
  transform: translateY(-1px);
}

/* ---------- 头部 / 导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--xhm-border);
  transition: box-shadow .25s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 6px 24px -16px rgba(232, 80, 28, .45);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem 1rem;
  min-height: 64px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--xhm-text);
}

.site-brand:hover {
  color: var(--xhm-primary-dark);
}

.site-brand__mark {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--xhm-amber), var(--xhm-primary-dark));
  box-shadow: 0 0 0 4px var(--xhm-primary-soft);
}

.custom-logo {
  max-height: 44px;
  width: auto;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 0 9px;
  background: transparent;
  border: 1px solid var(--xhm-border);
  border-radius: var(--xhm-radius-sm);
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--xhm-text);
}

.site-nav {
  display: none;
  flex: 1 0 100%;
  flex-direction: column;
  gap: .5rem;
  width: 100%;
  padding-bottom: 1rem;
}

.site-nav.is-open {
  display: flex;
}

.site-nav__menu .menu,
.site-footer__nav .menu,
.footer-menu {
  display: flex;
  flex-wrap: wrap;
  gap: .25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__menu .menu {
  flex-direction: column;
  gap: .25rem;
}

.site-nav__menu .menu a {
  display: block;
  padding: .5rem .25rem;
  color: var(--xhm-text-soft);
  font-weight: 500;
}

.site-nav__menu .menu a:hover,
.site-nav__menu .menu .current-menu-item > a {
  color: var(--xhm-primary-dark);
}

.site-nav__menu .sub-menu {
  margin: .25rem 0 .25rem 1rem;
  padding: 0;
  list-style: none;
}

.site-nav__cta {
  align-self: flex-start;
  margin-top: .5rem;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1000px 420px at 85% -10%, var(--xhm-primary-soft), transparent 70%),
    linear-gradient(180deg, var(--xhm-paper), var(--xhm-bg));
  border-bottom: 1px solid var(--xhm-border);
}

.hero__inner {
  display: grid;
  gap: 2.5rem;
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.hero__badge {
  display: inline-block;
  margin: 0 0 1rem;
  padding: .3rem .85rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--xhm-primary-dark);
  background: var(--xhm-primary-soft);
  border-radius: var(--xhm-radius-pill);
}

.hero__title {
  margin: 0 0 1rem;
  font-size: clamp(1.7rem, 5vw, 2.6rem);
  font-weight: 800;
}

.hero__desc {
  max-width: 34em;
  margin: 0 0 1.75rem;
  color: var(--xhm-muted);
  font-size: 1.02rem;
}

.features {
  display: grid;
  gap: .75rem;
  margin: 0 0 1.75rem;
  padding: 0;
  list-style: none;
}

.feature {
  position: relative;
  padding-left: 1.6rem;
  font-size: .95rem;
}

.feature::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--xhm-amber), var(--xhm-primary-dark));
}

.feature__title {
  display: block;
  font-weight: 700;
}

.feature__desc {
  display: block;
  color: var(--xhm-muted);
  font-size: .9rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .75rem;
  margin: 0;
}

.hero__aside {
  align-self: start;
  padding: 1.5rem;
  background: #fff;
  border: 1px solid var(--xhm-border);
  border-radius: var(--xhm-radius);
  box-shadow: var(--xhm-shadow);
}

.hero__aside-title {
  margin: 0 0 1rem;
  text-align: center;
  font-size: .95rem;
  font-weight: 600;
  color: var(--xhm-text-soft);
}

/* ---------- 小程序码卡片 ---------- */
.qr-card {
  display: grid;
  justify-items: center;
  gap: .75rem;
}

.qr-card__media {
  width: min(230px, 62vw);
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  padding: 10px;
  background: #fff;
  border: 1px solid var(--xhm-border);
  border-radius: var(--xhm-radius-sm);
}

.qr-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 8px;
}

.qr-card__placeholder {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  color: var(--xhm-muted);
  font-size: .82rem;
  text-align: center;
  background-color: var(--xhm-paper);
  background-image:
    linear-gradient(90deg, #eee2da 1px, transparent 1px),
    linear-gradient(#eee2da 1px, transparent 1px);
  background-size: 14px 14px;
  border-radius: 8px;
}

.qr-card__hint {
  margin: 0;
  font-weight: 600;
  color: var(--xhm-primary-dark);
}

.qr-card__appid {
  margin: 0;
  color: var(--xhm-muted);
  font-size: .82rem;
  word-break: break-all;
}

.guide {
  counter-reset: xhm-guide;
  display: grid;
  gap: .5rem;
  margin: 1.25rem 0 0;
  padding: 1.25rem 0 0;
  border-top: 1px dashed var(--xhm-border);
  list-style: none;
}

.guide__item {
  position: relative;
  padding-left: 2rem;
  font-size: .9rem;
  color: var(--xhm-text-soft);
}

.guide__item::before {
  counter-increment: xhm-guide;
  content: counter(xhm-guide);
  position: absolute;
  left: 0;
  top: .1em;
  display: grid;
  place-items: center;
  width: 1.4rem;
  height: 1.4rem;
  font-size: .75rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--xhm-amber), var(--xhm-primary-dark));
  border-radius: 50%;
}

/* ---------- 文章列表 ---------- */
.posts {
  padding: 3rem 0;
}

.section-head {
  margin-bottom: 1.75rem;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 800;
}

.section-title::after {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  margin-top: .6rem;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--xhm-primary), var(--xhm-amber));
}

.section-desc {
  margin: .5rem 0 0;
  color: var(--xhm-muted);
  font-size: .95rem;
}

.post-grid {
  display: grid;
  gap: 1.5rem;
}

.post-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--xhm-border);
  border-radius: var(--xhm-radius);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.post-card:hover {
  transform: translateY(-3px);
  border-color: #f7d7c8;
  box-shadow: var(--xhm-shadow);
}

.post-card__media {
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, var(--xhm-primary-soft), #fff);
}

.post-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease;
}

.post-card:hover .post-card__media img {
  transform: scale(1.04);
}

.post-card__placeholder {
  font-size: 2.2rem;
  font-weight: 800;
  color: #f6c3ac;
}

.post-card__body {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  padding: 1.25rem;
}

.chip {
  align-self: flex-start;
  padding: .18rem .7rem;
  font-size: .75rem;
  font-weight: 600;
  color: var(--xhm-primary-dark);
  background: var(--xhm-primary-soft);
  border-radius: var(--xhm-radius-pill);
}

.post-card__title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.post-card__title a {
  color: var(--xhm-text);
}

.post-card__title a:hover {
  color: var(--xhm-primary-dark);
}

.post-card__excerpt {
  margin: 0;
  color: var(--xhm-muted);
  font-size: .92rem;
}

.post-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: auto 0 0;
  padding-top: .75rem;
  color: var(--xhm-muted);
  font-size: .82rem;
}

.posts__empty {
  padding: 2rem;
  text-align: center;
  color: var(--xhm-muted);
  background: var(--xhm-paper);
  border: 1px dashed var(--xhm-border);
  border-radius: var(--xhm-radius);
}

/* ---------- 分页 ---------- */
.pagination {
  margin-top: 2.5rem;
}

.pagination__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.pagination__link,
.pagination__item > span {
  display: inline-block;
  padding: .45rem .9rem;
  color: var(--xhm-text-soft);
  background: #fff;
  border: 1px solid var(--xhm-border);
  border-radius: var(--xhm-radius-sm);
  font-size: .88rem;
}

.pagination__link:hover {
  color: var(--xhm-primary-dark);
  border-color: var(--xhm-primary);
}

.pagination__item.is-current > span,
.pagination__item.is-current > a {
  color: #fff;
  background: linear-gradient(135deg, var(--xhm-primary), var(--xhm-primary-dark));
  border-color: transparent;
}

/* ---------- 底部引导条 ---------- */
.cta {
  padding: 2.5rem 0;
  background: linear-gradient(135deg, var(--xhm-primary-dark), var(--xhm-primary));
  color: #fff;
}

.cta__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.cta__title {
  margin: 0 0 .25rem;
  color: #fff;
  font-size: 1.3rem;
  font-weight: 800;
}

.cta__desc {
  margin: 0;
  color: rgba(255, 255, 255, .88);
  font-size: .95rem;
}

/* ---------- 文章页 ---------- */
.site-main--single {
  padding: 1.5rem 0 3.5rem;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-bottom: 1.5rem;
  color: var(--xhm-muted);
  font-size: .84rem;
}

.breadcrumb a {
  color: var(--xhm-muted);
}

.breadcrumb a:hover {
  color: var(--xhm-primary-dark);
}

.breadcrumb__current {
  color: var(--xhm-text-soft);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 60vw;
}

.entry {
  max-width: var(--xhm-reading);
  margin: 0 auto;
}

.entry__title {
  margin: 0 0 .75rem;
  font-size: clamp(1.5rem, 4.2vw, 2.1rem);
  font-weight: 800;
}

.entry__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 0 0 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--xhm-border);
  color: var(--xhm-muted);
  font-size: .86rem;
}

.entry__thumb {
  margin: 0 0 1.75rem;
}

.entry__thumb img {
  width: 100%;
  border-radius: var(--xhm-radius);
}

/* 正文排版 */
.entry__content {
  color: var(--xhm-text-soft);
  font-size: 1.02rem;
  word-wrap: break-word;
}

.entry__content > *:first-child {
  margin-top: 0;
}

.entry__content h2 {
  margin-top: 2em;
  font-size: 1.35rem;
}

.entry__content h3 {
  margin-top: 1.6em;
  font-size: 1.15rem;
}

.entry__content ul,
.entry__content ol {
  padding-left: 1.4rem;
}

.entry__content li {
  margin-bottom: .4em;
}

.entry__content blockquote {
  margin: 1.5em 0;
  padding: .85em 1.25em;
  color: var(--xhm-text);
  background: var(--xhm-primary-soft);
  border-left: 4px solid var(--xhm-primary);
  border-radius: 0 var(--xhm-radius-sm) var(--xhm-radius-sm) 0;
}

.entry__content code {
  padding: .15em .4em;
  font-size: .9em;
  background: var(--xhm-paper);
  border: 1px solid var(--xhm-border);
  border-radius: 6px;
}

.entry__content pre {
  overflow-x: auto;
  padding: 1rem;
  background: #2a2438;
  color: #f5f0ff;
  border-radius: var(--xhm-radius-sm);
}

.entry__content pre code {
  padding: 0;
  background: transparent;
  border: 0;
  color: inherit;
}

.entry__content img {
  border-radius: var(--xhm-radius-sm);
}

.entry__content table {
  width: 100%;
  border-collapse: collapse;
  font-size: .94rem;
}

.entry__content th,
.entry__content td {
  padding: .55em .75em;
  border: 1px solid var(--xhm-border);
}

.entry__content th {
  background: var(--xhm-paper);
}

.entry__pages {
  margin-top: 1.5rem;
  font-size: .9rem;
}

.entry__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin-top: 2rem;
  font-size: .85rem;
}

.entry__tags-label {
  color: var(--xhm-muted);
}

.entry__tags a {
  padding: .2rem .7rem;
  color: var(--xhm-text-soft);
  background: var(--xhm-paper);
  border: 1px solid var(--xhm-border);
  border-radius: var(--xhm-radius-pill);
}

.entry__tags a:hover {
  color: var(--xhm-primary-dark);
  border-color: var(--xhm-primary);
}

/* 上/下篇 */
.post-nav {
  display: grid;
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--xhm-border);
}

.post-nav__item {
  display: grid;
  gap: .2rem;
}

.post-nav__item--next {
  text-align: right;
}

.post-nav__label {
  color: var(--xhm-muted);
  font-size: .78rem;
}

.post-nav__link {
  font-weight: 600;
}

/* 文章页小程序引导 */
.promo {
  display: grid;
  gap: 1.5rem;
  margin-top: 3rem;
  padding: 1.75rem;
  background: var(--xhm-paper);
  border: 1px solid var(--xhm-border);
  border-radius: var(--xhm-radius);
}

.promo__title {
  font-size: 1.15rem;
}

.promo__desc {
  color: var(--xhm-muted);
  font-size: .92rem;
}

.qr-card--compact .qr-card__media {
  width: min(170px, 50vw);
}

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 2.5rem 0 1.5rem;
  background: #fff;
  border-top: 1px solid var(--xhm-border);
}

.site-footer__inner {
  display: grid;
  gap: 1.5rem;
}

.site-footer__title {
  margin: 0 0 .25rem;
  font-weight: 800;
  font-size: 1.05rem;
}

.site-footer__tagline,
.site-footer__phone {
  margin: 0;
  color: var(--xhm-muted);
  font-size: .9rem;
}

.site-footer__phone a {
  color: var(--xhm-primary-dark);
}

.site-footer__nav a {
  color: var(--xhm-text-soft);
  font-size: .9rem;
}

.site-footer__nav a:hover {
  color: var(--xhm-primary-dark);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--xhm-border);
  color: var(--xhm-muted);
  font-size: .82rem;
}

.site-footer__copy,
.site-footer__links {
  margin: 0;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer__links a {
  color: var(--xhm-muted);
}

.site-footer__links a:hover {
  color: var(--xhm-primary-dark);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .post-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .features {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
  }

  .site-footer__inner {
    grid-template-columns: 2fr 1fr;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .site-header__inner {
    min-height: 72px;
  }

  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: flex;
    flex: 0 1 auto;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: 1.5rem;
    width: auto;
    padding-bottom: 0;
  }

  .site-nav__menu .menu {
    flex-direction: row;
    gap: 1.5rem;
  }

  .site-nav__cta {
    align-self: center;
    margin-top: 0;
  }

  .hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr);
    align-items: center;
    gap: 3rem;
    padding-top: 4.5rem;
    padding-bottom: 4.5rem;
  }

  .post-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .promo {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .post-nav {
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}