/* ============================================================
   Editorial Magazine — Inter — 黑白非对称印刷风格
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ---------- CSS 变量 ---------- */
:root {
  --c-black: #000000;
  --c-white: #ffffff;
  --c-ink: #000000;
  --c-gray-50: #f9f9f9;
  --c-gray-100: #f0f0f0;
  --c-gray-200: #e0e0e0;
  --c-gray-400: #999999;
  --c-gray-600: #555555;
  --c-gray-800: #222222;
  --c-accent: #111111;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

  --radius-card: 10px;
  --radius-btn: 4px;

  --header-h: 100px;
  --max-content: 780px;
  --max-wide: 1200px;

  --gap-sm: 12px;
  --gap-md: 24px;
  --gap-lg: 48px;
  --gap-xl: 80px;

  --transition-base: 200ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-black);
  background: var(--c-white);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
a:hover { opacity: 0.7; }
ol, ul { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, button, select, textarea { font: inherit; }

/* ---------- 工具类 ---------- */
.site-wrapper { overflow-x: hidden; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--c-black);
  color: var(--c-white);
  border-bottom: 2px solid var(--c-white);
}

.header__brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gap-md);
  height: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}

.brand {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--c-white);
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: calc(100% - 60px);
}

/* 汉堡按钮 */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: 1px solid rgba(255,255,255,0.4);
  padding: 8px 10px;
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--radius-btn);
  flex-shrink: 0;
}
.hamburger__line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-white);
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.hamburger.is-open .hamburger__line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open .hamburger__line:nth-child(2) { opacity: 0; }
.hamburger.is-open .hamburger__line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 菜单行 */
.header__nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gap-md);
  height: 44px;
  gap: var(--gap-md);
}

.header__subnav ol {
  display: flex;
  gap: 0;
  flex-wrap: nowrap;
  overflow: hidden;
}
.header__subnav ol li a {
  display: block;
  padding: 0 12px;
  height: 44px;
  line-height: 44px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--c-gray-200);
  text-decoration: none;
  white-space: nowrap;
  border-right: 1px solid rgba(255,255,255,0.1);
  transition: color var(--transition-base), background var(--transition-base);
}
.header__subnav ol li a:hover { color: var(--c-white); background: rgba(255,255,255,0.08); }

/* 搜索 */
.header__search { flex-shrink: 0; }
.search-form { display: flex; gap: 0; }
.search-form__input {
  padding: 6px 12px;
  border: 1px solid rgba(255,255,255,0.3);
  border-right: none;
  border-radius: var(--radius-btn) 0 0 var(--radius-btn);
  background: rgba(255,255,255,0.08);
  color: var(--c-white);
  font-size: 0.82rem;
  width: 180px;
  min-height: 36px;
  outline: none;
}
.search-form__input::placeholder { color: var(--c-gray-400); }
.search-form__input:focus { background: rgba(255,255,255,0.14); }
.search-form__btn {
  padding: 6px 14px;
  background: var(--c-white);
  color: var(--c-black);
  border: 1px solid var(--c-white);
  border-radius: 0 var(--radius-btn) var(--radius-btn) 0;
  font-size: 0.82rem;
  font-weight: 600;
  min-height: 36px;
  transition: background var(--transition-base), color var(--transition-base);
}
.search-form__btn:hover { background: var(--c-gray-200); }

/* ============================================================
   全屏遮罩菜单
   ============================================================ */
.fullscreen-menu {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: var(--c-black);
  color: var(--c-white);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: var(--gap-xl) var(--gap-lg);
  transform: translateX(-100%);
  transition: transform 350ms cubic-bezier(0.77,0,0.175,1);
}
.fullscreen-menu.is-open {
  transform: translateX(0);
}
.fullscreen-menu[aria-hidden="true"] { pointer-events: none; }
.fullscreen-menu[aria-hidden="false"] { pointer-events: auto; }

.fullscreen-menu__close {
  position: absolute;
  top: 24px;
  right: 24px;
  background: none;
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--c-white);
  font-size: 1.4rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.fullscreen-menu__close:hover { background: rgba(255,255,255,0.1); }

.fullscreen-menu__nav ol {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.fullscreen-menu__nav ol li { counter-increment: menu-item; }
.fullscreen-menu__nav ol li a {
  display: block;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  font-weight: 600;
  color: var(--c-white);
  text-decoration: none;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  min-height: 48px;
  line-height: 1.3;
  transition: padding-left var(--transition-base), opacity var(--transition-base);
}
.fullscreen-menu__nav ol li a:hover { padding-left: 12px; opacity: 0.75; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 70vh;
  background: var(--c-black);
  color: var(--c-white);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}

.hero__inner {
  position: relative;
  z-index: 2;
  padding: var(--gap-xl) var(--gap-md) var(--gap-xl);
  max-width: var(--max-wide);
  width: 100%;
}

.hero__eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-gray-400);
  margin-bottom: var(--gap-md);
  border-left: 3px solid var(--c-white);
  padding-left: 10px;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  max-width: 800px;
  margin-bottom: var(--gap-md);
}
.hero__title--md {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
}

.hero__sub {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--c-gray-200);
  max-width: 560px;
  margin-bottom: var(--gap-lg);
  line-height: 1.6;
}

.hero__cta {
  display: flex;
  gap: var(--gap-md);
  flex-wrap: wrap;
}

.hero__breadcrumb {
  font-size: 0.82rem;
  color: var(--c-gray-400);
  margin-bottom: var(--gap-md);
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero__breadcrumb a { color: var(--c-gray-400); text-decoration: none; }
.hero__breadcrumb a:hover { color: var(--c-white); }

.hero__date {
  display: block;
  font-size: 0.82rem;
  color: var(--c-gray-400);
  margin-top: var(--gap-sm);
}

/* 斜切底边分割线 */
.hero__slash {
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 60px;
  background: var(--c-white);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  z-index: 3;
}

/* feature 页左色带 */
.hero--feature .hero__feature-accent {
  position: absolute;
  left: 0;
  top: 0;
  width: 6px;
  height: 100%;
  background: var(--c-white);
  z-index: 2;
}

/* about/privacy：稍矮 */
.hero--about,
.hero--privacy {
  min-height: 40vh;
}

.hero--faq {
  min-height: 45vh;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-btn);
  text-decoration: none;
  min-height: 44px;
  transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
  white-space: nowrap;
}
.btn--primary {
  background: var(--c-white);
  color: var(--c-black);
  border: 2px solid var(--c-white);
}
.btn--primary:hover { background: var(--c-gray-200); border-color: var(--c-gray-200); opacity: 1; }
.btn--ghost {
  background: transparent;
  color: var(--c-white);
  border: 2px solid rgba(255,255,255,0.5);
}
.btn--ghost:hover { border-color: var(--c-white); opacity: 1; }
.btn--outline {
  background: transparent;
  color: var(--c-black);
  border: 2px solid var(--c-black);
}
.btn--outline:hover { background: var(--c-black); color: var(--c-white); opacity: 1; }

/* ============================================================
   MAIN LAYOUT
   ============================================================ */
.site-main {
  padding: var(--gap-xl) var(--gap-md);
  max-width: var(--max-wide);
  margin: 0 auto;
}

.site-main--with-aside {
  display: grid;
  grid-template-columns: 1fr 300px;
  grid-template-areas: "article aside";
  gap: var(--gap-xl);
  align-items: start;
}

.content-article {
  grid-area: section;
  min-width: 0;
}

.content-aside {
  grid-area: aside;
  position: sticky;
  top: calc(var(--header-h) + 24px);
  display: flex;
  flex-direction: column;
  gap: var(--gap-md);
}

/* ============================================================
   CONTENT SECTIONS
   ============================================================ */
.content-section {
  margin-bottom: var(--gap-xl);
}

.content-section--dark {
  background: var(--c-black);
  color: var(--c-white);
  margin-left: calc(-1 * var(--gap-md));
  margin-right: calc(-1 * var(--gap-md));
  padding: var(--gap-xl) var(--gap-md);
  margin-bottom: var(--gap-xl);
}

/* 正文排版 */
.content-body {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-gray-800);
  max-width: var(--max-content);
}

.content-body--dropcap > p:first-of-type::first-letter {
  float: left;
  font-size: 4rem;
  line-height: 0.85;
  font-weight: 700;
  margin-right: 8px;
  margin-top: 6px;
  color: var(--c-black);
}

.content-body h2, .content-body h3, .content-body h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: var(--gap-lg);
  margin-bottom: var(--gap-sm);
  line-height: 1.25;
}
.content-body h2 { font-size: 1.5rem; }
.content-body h3 { font-size: 1.2rem; }

.content-body p { margin-bottom: var(--gap-md); }

.content-body ul, .content-body ol {
  padding-left: 1.5em;
  margin-bottom: var(--gap-md);
  list-style: revert;
}
.content-body li { margin-bottom: 6px; }

.content-body a {
  color: var(--c-black);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.content-body blockquote {
  border-left: 4px solid var(--c-black);
  padding: var(--gap-md) var(--gap-md);
  margin: var(--gap-lg) 0;
  font-size: 1.1rem;
  font-style: italic;
  background: var(--c-gray-50);
  color: var(--c-gray-800);
}

.content-body--legal { max-width: none; }
.content-body--faq { max-width: none; }

/* ============================================================
   SECTION HEADER
   ============================================================ */
.section-header {
  margin-bottom: var(--gap-lg);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.section-header--light { color: var(--c-white); }

.section-header h2,
.content-section > h2,
.content-section > h3 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: var(--gap-sm);
  border-bottom: 2px solid currentColor;
  padding-bottom: 8px;
  display: inline-block;
}

.section-header h2 span,
.content-section > h2 span,
.content-section > h3 span {
  display: inline;
}

.section-sub {
  font-size: 0.9rem;
  color: var(--c-gray-600);
  font-weight: 400;
}
.section-header--light .section-sub { color: var(--c-gray-200); }

.section-more {
  display: inline-block;
  margin-top: var(--gap-md);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-black);
  text-decoration: none;
  border-bottom: 2px solid var(--c-black);
  padding-bottom: 2px;
  transition: opacity var(--transition-base);
}
.section-more:hover { opacity: 0.6; }

/* ============================================================
   CARDS
   ============================================================ */
.card-grid {
  display: grid;
  gap: var(--gap-md);
}
.card-grid--4 { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.card-grid--3 { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.card-grid--2 { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }

.card {
  padding: var(--gap-md);
  border-radius: var(--radius-card);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform var(--transition-base);
}
.card:hover { transform: translateY(-2px); }

.card--outline {
  border: 1.5px solid var(--c-black);
  background: var(--c-white);
}

.card--feature {
  border-width: 2px;
}

.card--sm { padding: var(--gap-sm) var(--gap-md); }

.card__label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-gray-600);
  border-left: 2px solid var(--c-black);
  padding-left: 6px;
}

.card__title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.card__title a {
  text-decoration: none;
  color: var(--c-black);
}
.card__title a:hover { text-decoration: underline; }

.card__desc {
  font-size: 0.85rem;
  color: var(--c-gray-600);
  line-height: 1.55;
  flex: 1;
}

.card__date {
  font-size: 0.75rem;
  color: var(--c-gray-400);
  font-weight: 400;
}

/* content-section--dark 里的卡片颜色翻转 */
.content-section--dark .card--outline {
  border-color: rgba(255,255,255,0.4);
  background: transparent;
  color: var(--c-white);
}
.content-section--dark .card__label { color: var(--c-gray-400); border-left-color: var(--c-white); }
.content-section--dark .card__title a { color: var(--c-white); }
.content-section--dark .card__desc { color: var(--c-gray-200); }

/* ============================================================
   ARTICLE META
   ============================================================ */
.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--c-gray-600);
  margin-bottom: var(--gap-lg);
  padding-bottom: var(--gap-md);
  border-bottom: 1px solid var(--c-gray-200);
}
.article-meta__label {
  font-weight: 600;
  color: var(--c-gray-800);
}
.article-meta time { color: var(--c-gray-600); }

/* ============================================================
   ASIDE 侧边栏
   ============================================================ */
.aside__block {
  border: 1.5px solid var(--c-black);
  border-radius: var(--radius-card);
  padding: var(--gap-md);
  background: var(--c-white);
}
.aside__block h3 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: var(--gap-sm);
  border-bottom: 1px solid var(--c-gray-200);
  padding-bottom: 8px;
  letter-spacing: -0.01em;
}
.aside__block h3 span { display: inline; }
.aside__block p { font-size: 0.85rem; color: var(--c-gray-600); line-height: 1.6; margin-bottom: var(--gap-sm); }
.aside__block nav ol { display: flex; flex-direction: column; gap: 4px; }
.aside__block nav ol li a {
  display: block;
  font-size: 0.85rem;
  color: var(--c-gray-800);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 1px solid var(--c-gray-100);
  min-height: 40px;
  line-height: 1.4;
  display: flex;
  align-items: center;
  transition: color var(--transition-base), padding-left var(--transition-base);
}
.aside__block nav ol li a:hover { color: var(--c-black); padding-left: 6px; }
.aside__block nav ol li a[aria-current="page"] { font-weight: 700; }

.aside__block--cta, .aside__block--highlight { background: var(--c-gray-50); }
.aside__block--note { border-style: dashed; }

/* HOME aside 特殊布局 */
.home-aside {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-md);
}

/* ============================================================
   DL 导航列表
   ============================================================ */
.guide-dl {
  display: grid;
  gap: 0;
  border-top: 2px solid var(--c-black);
}
.guide-dl dt {
  padding: 14px 0 4px;
  font-weight: 600;
  font-size: 1rem;
}
.guide-dl dt a {
  color: var(--c-black);
  text-decoration: none;
  display: block;
}
.guide-dl dt a:hover { text-decoration: underline; }
.guide-dl dd {
  padding: 0 0 14px;
  font-size: 0.85rem;
  color: var(--c-gray-600);
  border-bottom: 1px solid var(--c-gray-200);
  line-height: 1.55;
}

/* ============================================================
   ABOUT 特有
   ============================================================ */
.pull-quote {
  border-left: 5px solid var(--c-black);
  padding: var(--gap-md) var(--gap-lg);
  margin: 0 0 var(--gap-lg);
  background: var(--c-gray-50);
}
.pull-quote p {
  font-size: 1.25rem;
  font-style: italic;
  font-weight: 300;
  line-height: 1.6;
  color: var(--c-gray-800);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap-md);
  margin: var(--gap-lg) 0;
}
.about-stat {
  border: 1.5px solid var(--c-black);
  border-radius: var(--radius-card);
  padding: var(--gap-md);
  text-align: center;
}
.about-stat__num {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 8px;
}
.about-stat__label {
  font-size: 0.8rem;
  color: var(--c-gray-600);
  font-weight: 500;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--c-black);
  color: var(--c-white);
  margin-top: var(--gap-xl);
}

.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: var(--gap-xl);
  padding: var(--gap-xl) var(--gap-md);
  border-bottom: 1px solid rgba(255,255,255,0.12);
  max-width: var(--max-wide);
  margin: 0 auto;
}

.footer__brand {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--gap-sm);
}

.footer__about {
  font-size: 0.85rem;
  color: var(--c-gray-400);
  line-height: 1.6;
}

.footer__col-title {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-gray-400);
  margin-bottom: var(--gap-sm);
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer__col nav ol {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer__col nav ol li a {
  display: block;
  font-size: 0.85rem;
  color: var(--c-gray-200);
  text-decoration: none;
  padding: 5px 0;
  min-height: 40px;
  line-height: 1.4;
  display: flex;
  align-items: center;
  transition: color var(--transition-base), padding-left var(--transition-base);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.footer__col nav ol li a:hover { color: var(--c-white); padding-left: 6px; }

/* 订阅表单 */
.footer__subscribe {
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
  margin-bottom: var(--gap-md);
}
.footer__subscribe input {
  padding: 10px 14px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-btn);
  color: var(--c-white);
  font-size: 0.85rem;
  min-height: 44px;
  outline: none;
}
.footer__subscribe input::placeholder { color: var(--c-gray-400); }
.footer__subscribe input:focus { background: rgba(255,255,255,0.14); }
.footer__subscribe button {
  padding: 10px 20px;
  background: var(--c-white);
  color: var(--c-black);
  border: none;
  border-radius: var(--radius-btn);
  font-size: 0.85rem;
  font-weight: 600;
  min-height: 44px;
  transition: background var(--transition-base);
}
.footer__subscribe button:hover { background: var(--c-gray-200); }

.footer__contact {
  font-size: 0.82rem;
  color: var(--c-gray-400);
}
.footer__contact a { color: var(--c-gray-200); }
.footer__contact a:hover { color: var(--c-white); }

/* 底栏 */
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: var(--gap-md) var(--gap-md);
  max-width: var(--max-wide);
  margin: 0 auto;
}
.footer__bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-md);
  flex-wrap: wrap;
}
.footer__copy {
  font-size: 0.8rem;
  color: var(--c-gray-400);
}
.footer__bottom nav ol {
  display: flex;
  gap: 0;
  flex-wrap: wrap;
}
.footer__bottom nav ol li a {
  display: block;
  font-size: 0.8rem;
  color: var(--c-gray-400);
  text-decoration: none;
  padding: 8px 12px;
  min-height: 40px;
  line-height: 24px;
  transition: color var(--transition-base);
}
.footer__bottom nav ol li a:hover { color: var(--c-white); }

/* ============================================================
   SCROLL REVEAL 动效
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.5s ease, transform 0.5s ease;
  }
  .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
  .stagger-list > * {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.4s ease, transform 0.4s ease;
  }
  .stagger-list.is-visible > * { opacity: 1; transform: translateY(0); }
  .stagger-list.is-visible > *:nth-child(1) { transition-delay: 0ms; }
  .stagger-list.is-visible > *:nth-child(2) { transition-delay: 80ms; }
  .stagger-list.is-visible > *:nth-child(3) { transition-delay: 160ms; }
  .stagger-list.is-visible > *:nth-child(4) { transition-delay: 240ms; }
  .stagger-list.is-visible > *:nth-child(5) { transition-delay: 320ms; }
  .stagger-list.is-visible > *:nth-child(6) { transition-delay: 400ms; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* 平板 */
@media (max-width: 900px) {
  .site-main--with-aside {
    grid-template-columns: 1fr;
    grid-template-areas:
      "article"
      "aside";
  }
  .content-aside {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-md);
  }
  .footer__top {
    grid-template-columns: 1fr 1fr;
  }
  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 手机 */
@media (max-width: 600px) {
  :root {
    --gap-lg: 32px;
    --gap-xl: 48px;
  }

  .header__subnav { display: none; }
  .search-form__input { width: 130px; }

  .hero { min-height: 60vh; }
  .hero--about, .hero--privacy { min-height: 35vh; }
  .hero__inner { padding: var(--gap-lg) var(--gap-md); }
  .hero__slash { height: 36px; }

  .card-grid--4,
  .card-grid--3,
  .card-grid--2 { grid-template-columns: 1fr; }

  .footer__top {
    grid-template-columns: 1fr;
    gap: var(--gap-lg);
  }
  .footer__bottom-inner { flex-direction: column; align-items: flex-start; }

  .about-stats { grid-template-columns: repeat(2, 1fr); }

  .content-aside {
    grid-template-columns: 1fr;
  }

  .home-aside {
    grid-template-columns: 1fr;
  }

  .header__brand-row { padding: 0 var(--gap-sm); }
  .header__nav-row { padding: 0 var(--gap-sm); }

  .site-main { padding: var(--gap-lg) var(--gap-sm); }

  .content-section--dark {
    margin-left: calc(-1 * var(--gap-sm));
    margin-right: calc(-1 * var(--gap-sm));
    padding: var(--gap-lg) var(--gap-sm);
  }
}

@media (max-width: 400px) {
  .search-form { display: none; }
}