@import url('https://fonts.googleapis.com/css2?family=Kalam:wght@400;700&family=Patrick+Hand&display=swap');

/* ===== 基础变量 ===== */
:root {
  --c-bg: #1a1a2e;
  --c-accent: #e63946;
  --c-ink: #f1faee;
  --c-bg2: #16213e;
  --c-bg3: #0f3460;
  --c-glass: rgba(241, 250, 238, 0.06);
  --c-glass-border: rgba(241, 250, 238, 0.12);
  --c-muted: rgba(241, 250, 238, 0.5);
  --c-accent-dim: rgba(230, 57, 70, 0.18);
  --font-sketch: 'Kalam', 'Patrick Hand', cursive;
  --font-body: 'Patrick Hand', 'Kalam', system-ui, sans-serif;
  --nav-h: 64px;
  --max-w: 1140px;
  --prose-w: 740px;
  --gap: clamp(1rem, 3vw, 2rem);
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 18px; }
body {
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--c-accent); text-decoration: none; transition: opacity var(--transition); }
a:hover { opacity: 0.8; }
ol, ul { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input { font-family: inherit; }

/* ===== 站点包裹 ===== */
.site-wrap { min-height: 100vh; display: flex; flex-direction: column; }

/* ===== 顶部导航 ===== */
.topnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 200;
  background: rgba(26, 26, 46, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-glass-border);
}
.topnav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gap);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  font-family: var(--font-sketch);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--c-ink);
  letter-spacing: 0.04em;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.burger {
  background: none;
  border: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  min-height: 44px;
  min-width: 44px;
  justify-content: center;
  align-items: center;
}
.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-ink);
  transition: var(--transition);
  transform-origin: center;
}
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-cta {
  background: var(--c-accent);
  color: var(--c-ink);
  padding: 0 1.1rem;
  height: 40px;
  line-height: 40px;
  font-family: var(--font-sketch);
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  display: inline-block;
  transition: background var(--transition);
  min-width: 80px;
  text-align: center;
}
.nav-cta:hover { background: #c1121f; opacity: 1; }

/* ===== 全屏遮罩菜单 ===== */
.fullscreen-menu {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(15, 10, 30, 0.97);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.fullscreen-menu.is-open {
  opacity: 1;
  pointer-events: all;
}
.menu-close {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--c-ink);
  font-size: 2rem;
  padding: 10px;
  min-height: 44px;
  min-width: 44px;
  line-height: 1;
}
.menu-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-align: center;
  counter-reset: menu-counter;
}
.menu-list li {
  counter-increment: menu-counter;
}
.menu-list li a {
  display: block;
  font-family: var(--font-sketch);
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  color: var(--c-ink);
  padding: 0.6rem 2rem;
  min-height: 44px;
  line-height: 1.4;
  transition: color var(--transition);
  position: relative;
}
.menu-list li a::before {
  content: counter(menu-counter, decimal-leading-zero) ".";
  color: var(--c-accent);
  margin-right: 0.8rem;
  font-size: 0.85em;
  font-weight: 700;
}
.menu-list li a:hover,
.menu-list li a[aria-current="page"] { color: var(--c-accent); opacity: 1; }

/* ===== Hero 首页 ===== */
.parallax-hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: flex-end;
  padding-top: var(--nav-h);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(230, 57, 70, 0.15) 0%, transparent 70%),
    radial-gradient(ellipse 60% 80% at 20% 80%, rgba(15, 52, 96, 0.6) 0%, transparent 60%),
    linear-gradient(160deg, var(--c-bg) 0%, var(--c-bg2) 50%, var(--c-bg3) 100%);
  will-change: transform;
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 6rem var(--gap) 5rem;
  text-align: right;
}
.hero-eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: var(--c-accent);
  font-family: var(--font-sketch);
  margin-bottom: 1rem;
  text-transform: uppercase;
}
.hero-headline {
  font-family: var(--font-sketch);
  font-weight: 700;
  font-size: clamp(2.2rem, 7vw, 5rem);
  line-height: 1.15;
  color: var(--c-ink);
  margin-bottom: 1.2rem;
  max-width: 16em;
  margin-left: auto;
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--c-muted);
  margin-bottom: 2rem;
  max-width: 28em;
  margin-left: auto;
}
.hero-btn {
  display: inline-block;
  background: var(--c-accent);
  color: var(--c-ink);
  padding: 0.75rem 2rem;
  font-family: var(--font-sketch);
  font-weight: 700;
  font-size: 1rem;
  min-height: 44px;
  line-height: 1.4;
  transition: background var(--transition);
}
.hero-btn:hover { background: #c1121f; opacity: 1; }

/* ===== Section Hero ===== */
.section-hero {
  padding-top: var(--nav-h);
  background: linear-gradient(135deg, var(--c-bg2) 0%, var(--c-bg) 100%);
  border-bottom: 2px solid var(--c-accent);
  position: relative;
}
.section-hero::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 60px; height: 2px;
  background: var(--c-ink);
}
.section-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem var(--gap) 3rem;
}
.section-headline {
  font-family: var(--font-sketch);
  font-weight: 700;
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  line-height: 1.2;
  color: var(--c-ink);
  margin: 0.5rem 0 1rem;
}
.section-sub {
  color: var(--c-muted);
  font-size: 1rem;
  max-width: 48em;
}

/* ===== Story Header ===== */
.story-header {
  padding-top: var(--nav-h);
  background: var(--c-bg2);
  border-bottom: 1px solid var(--c-glass-border);
}
.story-header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3.5rem var(--gap) 2.5rem;
}
.story-headline {
  font-family: var(--font-sketch);
  font-weight: 700;
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  line-height: 1.25;
  color: var(--c-ink);
  margin: 0.5rem 0 1rem;
}
.story-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--c-muted);
  font-size: 0.9rem;
  flex-wrap: wrap;
}
.story-meta time { color: var(--c-accent); }
.meta-sep { opacity: 0.4; }
.story-hero-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gap) 2rem;
}
.story-hero-img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
}

/* ===== Inner Hero (about/privacy) ===== */
.inner-hero {
  padding-top: var(--nav-h);
  background: linear-gradient(160deg, var(--c-bg3) 0%, var(--c-bg) 100%);
  border-bottom: 1px solid var(--c-glass-border);
}
.inner-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem var(--gap) 3rem;
}
.inner-hero h1 {
  font-family: var(--font-sketch);
  font-weight: 700;
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  line-height: 1.2;
  color: var(--c-ink);
  margin: 0.5rem 0 1rem;
}
.inner-sub {
  color: var(--c-muted);
  font-size: 1rem;
  max-width: 48em;
}

/* ===== Breadcrumb ===== */
.breadcrumb-line {
  font-size: 0.85rem;
  color: var(--c-muted);
  margin-bottom: 0.5rem;
}
.breadcrumb-line a { color: var(--c-muted); }
.breadcrumb-line a:hover { color: var(--c-accent); opacity: 1; }

/* ===== 页面主体 ===== */
.page-body {
  flex: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem var(--gap);
  width: 100%;
}

/* ===== 两栏布局 ===== */
.layout-two-col {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  align-items: start;
}
.col-main { min-width: 0; }
.col-side { position: sticky; top: calc(var(--nav-h) + 1.5rem); }

/* ===== 主内容 ===== */
.main-content { width: 100%; }

/* ===== 文章正文 ===== */
.prose {
  max-width: var(--prose-w);
  color: var(--c-ink);
  font-size: 1rem;
  line-height: 1.8;
}
.story-prose { max-width: 100%; }
.prose h2 {
  font-family: var(--font-sketch);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-ink);
  margin: 2.5rem 0 1rem;
  padding-left: 0.8rem;
  border-left: 3px solid var(--c-accent);
}
.prose h3 {
  font-family: var(--font-sketch);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-ink);
  margin: 2rem 0 0.75rem;
}
.prose p { margin-bottom: 1.2rem; }
.prose ul, .prose ol {
  padding-left: 1.5rem;
  margin-bottom: 1.2rem;
}
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: 0.4rem; line-height: 1.7; }
.prose a { color: var(--c-accent); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--c-ink); font-weight: 700; }
.prose blockquote {
  border-left: 3px solid var(--c-accent);
  padding: 0.8rem 1.2rem;
  background: var(--c-glass);
  margin: 1.5rem 0;
  color: var(--c-muted);
  font-style: italic;
}
.prose code {
  background: rgba(230, 57, 70, 0.15);
  padding: 0.1em 0.4em;
  font-size: 0.88em;
  border-radius: 2px;
}
.prose pre {
  background: var(--c-bg2);
  padding: 1.2rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  border-left: 3px solid var(--c-accent);
}
.prose hr {
  border: none;
  border-top: 1px solid var(--c-glass-border);
  margin: 2rem 0;
}
.prose time { color: var(--c-accent); font-style: italic; }

/* ===== Section Pills ===== */
.section-pills {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--c-glass-border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}
.pills-label {
  font-size: 0.9rem;
  color: var(--c-muted);
  margin-right: 0.5rem;
}
.section-pill {
  display: inline-block;
  padding: 0.45rem 1rem;
  border: 1px solid var(--c-accent);
  color: var(--c-accent);
  font-size: 0.9rem;
  font-family: var(--font-sketch);
  transition: background var(--transition), color var(--transition);
  min-height: 40px;
  line-height: 1.4;
}
.section-pill:hover { background: var(--c-accent); color: var(--c-ink); opacity: 1; }

/* ===== 卡片网格（首页）===== */
.cards-grid {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--c-glass-border);
}
.cards-heading {
  font-family: var(--font-sketch);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 1.5rem;
  padding-left: 0.8rem;
  border-left: 3px solid var(--c-accent);
}
.cards-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.4rem;
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-radius: 0;
  color: var(--c-ink);
  transition: background var(--transition), border-color var(--transition);
  min-height: 120px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.card:hover { background: rgba(241,250,238,0.1); border-color: var(--c-accent); opacity: 1; }
.card-title {
  font-family: var(--font-sketch);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.3;
  color: var(--c-ink);
}
.card-desc {
  font-size: 0.9rem;
  color: var(--c-muted);
  line-height: 1.5;
  flex: 1;
}
.card-date {
  font-size: 0.8rem;
  color: var(--c-accent);
  font-style: italic;
}

/* ===== 子页块列表（栏目页）===== */
.child-list {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--c-glass-border);
}
.child-list-heading {
  font-family: var(--font-sketch);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 1.2rem;
  padding-left: 0.8rem;
  border-left: 3px solid var(--c-accent);
}
.child-blocks {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.child-block {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.2rem 1.4rem;
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-left: 3px solid var(--c-accent);
  color: var(--c-ink);
  transition: background var(--transition);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.child-block:hover { background: rgba(241,250,238,0.09); opacity: 1; }
.child-block strong {
  font-family: var(--font-sketch);
  font-weight: 700;
  font-size: 1rem;
  color: var(--c-ink);
  line-height: 1.3;
}
.child-block span {
  font-size: 0.88rem;
  color: var(--c-muted);
  line-height: 1.5;
}
.child-block time {
  font-size: 0.8rem;
  color: var(--c-accent);
  font-style: italic;
}

/* ===== 侧边栏 ===== */
.side-widget {
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  padding: 1.4rem;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.widget-title {
  font-family: var(--font-sketch);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--c-accent);
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  text-transform: uppercase;
}
.side-widget ol { counter-reset: side-counter; }
.side-widget ol li {
  counter-increment: side-counter;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--c-glass-border);
}
.side-widget ol li:last-child { border-bottom: none; }
.side-widget ol li a {
  display: block;
  color: var(--c-ink);
  font-size: 0.9rem;
  line-height: 1.4;
  padding: 0.2rem 0;
  min-height: 40px;
  display: flex;
  align-items: center;
}
.side-widget ol li a::before {
  content: counter(side-counter) ".";
  color: var(--c-accent);
  font-size: 0.8em;
  margin-right: 0.5rem;
  font-weight: 700;
  min-width: 1.5em;
}
.side-widget ol li a:hover { color: var(--c-accent); opacity: 1; }

/* ===== 兄弟文章链接 ===== */
.sibling-list { display: flex; flex-direction: column; gap: 0.6rem; }
.sibling-link {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.8rem 1rem;
  background: rgba(241,250,238,0.04);
  border: 1px solid var(--c-glass-border);
  color: var(--c-ink);
  font-size: 0.88rem;
  transition: background var(--transition), border-color var(--transition);
  min-height: 44px;
  justify-content: center;
}
.sibling-link:hover { background: var(--c-glass); border-color: var(--c-accent); opacity: 1; }
.sibling-link strong { color: var(--c-ink); font-size: 0.9rem; line-height: 1.3; }
.sibling-link span { color: var(--c-muted); font-size: 0.82rem; }

/* ===== About / Privacy 布局 ===== */
.about-layout, .privacy-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 3rem;
  align-items: start;
}
.about-aside, .privacy-aside { position: sticky; top: calc(var(--nav-h) + 1.5rem); }

/* ===== 页脚 ===== */
.sitefooter {
  background: var(--c-bg2);
  border-top: 1px solid var(--c-glass-border);
  margin-top: auto;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2.5rem var(--gap) 1.5rem;
}
.footer-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--c-glass-border);
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}
.footer-form-label {
  font-family: var(--font-sketch);
  font-size: 0.95rem;
  color: var(--c-muted);
}
.footer-form-row {
  display: flex;
  gap: 0;
}
.footer-form-row input {
  flex: 1;
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-right: none;
  color: var(--c-ink);
  padding: 0.6rem 1rem;
  font-size: 0.95rem;
  min-height: 44px;
  outline: none;
}
.footer-form-row input:focus { border-color: var(--c-accent); }
.footer-form-row button {
  background: var(--c-accent);
  color: var(--c-ink);
  border: none;
  padding: 0.6rem 1.2rem;
  font-family: var(--font-sketch);
  font-weight: 700;
  font-size: 0.95rem;
  min-height: 44px;
  min-width: 60px;
  transition: background var(--transition);
}
.footer-form-row button:hover { background: #c1121f; }
.footer-bottom {
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
}
.footer-bottom nav ol {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-bottom nav ol li a {
  color: var(--c-muted);
  font-size: 0.9rem;
  min-height: 40px;
  display: flex;
  align-items: center;
}
.footer-bottom nav ol li a:hover { color: var(--c-accent); opacity: 1; }
.footer-copy {
  font-size: 0.82rem;
  color: var(--c-muted);
  line-height: 1.6;
}

/* ===== Reveal 动画 ===== */
.reveal-block, .reveal-stagger {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-block.is-visible, .reveal-stagger.is-visible {
  opacity: 1;
  transform: none;
}
.reveal-stagger.is-visible .card,
.reveal-stagger.is-visible .child-block {
  animation: staggerIn 0.5s ease both;
}
.reveal-stagger.is-visible .card:nth-child(1) { animation-delay: 0s; }
.reveal-stagger.is-visible .card:nth-child(2) { animation-delay: 0.08s; }
.reveal-stagger.is-visible .card:nth-child(3) { animation-delay: 0.16s; }
.reveal-stagger.is-visible .card:nth-child(4) { animation-delay: 0.24s; }
.reveal-stagger.is-visible .card:nth-child(5) { animation-delay: 0.32s; }
.reveal-stagger.is-visible .card:nth-child(6) { animation-delay: 0.40s; }
@keyframes staggerIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal-block, .reveal-stagger,
  .reveal-block.is-visible, .reveal-stagger.is-visible,
  .hero-bg { transition: none !important; animation: none !important; transform: none !important; opacity: 1 !important; }
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .layout-two-col,
  .about-layout,
  .privacy-layout {
    grid-template-columns: 1fr;
  }
  .col-side, .about-aside, .privacy-aside { position: static; }
}
@media (max-width: 640px) {
  html { font-size: 17px; }
  .hero-content { text-align: right; padding: 4rem var(--gap) 3.5rem; }
  .hero-headline { font-size: clamp(1.8rem, 8vw, 3rem); }
  .cards-row { grid-template-columns: 1fr; }
  .section-hero-inner, .story-header-inner, .inner-hero-inner { padding: 3rem var(--gap) 2rem; }
  .page-body { padding: 2rem var(--gap); }
  .footer-form-row { flex-direction: column; }
  .footer-form-row input { border-right: 1px solid var(--c-glass-border); border-bottom: none; }
  .menu-list li a { font-size: 1.1rem; }
  .about-layout, .privacy-layout { grid-template-columns: 1fr; }
}
@media (max-width: 375px) {
  .hero-headline { font-size: 1.8rem; }
  .brand { font-size: 1.1rem; }
  .topnav-inner { padding: 0 0.75rem; }
}