@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,400;0,600;0,700;0,800;1,400&display=swap');

/* ===========================
   CSS 变量 & 全局重置
=========================== */
:root {
  --green: #87ff71;
  --yellow: #ffce5c;
  --dark: #192617;
  --dark2: #223320;
  --dark3: #2e4a2b;
  --light: #f4ffe0;
  --white: #ffffff;
  --text: #192617;
  --text-muted: #4a6645;
  --sidenav-w: 240px;
  --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --radius-pill: 999px;
  --transition: 0.22s cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--light);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--dark); text-decoration: none; }
a:hover { color: var(--dark3); }

ol, ul { list-style: none; }

/* ===========================
   布局骨架
=========================== */
.site-wrap {
  display: flex;
  min-height: 100vh;
}

.main-area {
  flex: 1;
  min-width: 0;
  margin-left: var(--sidenav-w);
  display: flex;
  flex-direction: column;
}

/* ===========================
   侧边导航
=========================== */
.sidenav {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidenav-w);
  height: 100vh;
  background: var(--dark);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  overflow-x: hidden;
  padding-bottom: 1rem;
}

.sidenav-brand {
  padding: 1.5rem 1.25rem 1rem;
  border-bottom: 2px dashed var(--dark3);
}

.brand-icon {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.brand-text {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--green);
  letter-spacing: -0.02em;
  display: block;
}

.sidenav ol {
  padding: 1rem 0;
  flex: 1;
}

.sidenav ol li a {
  display: block;
  padding: 0.6rem 1.25rem;
  color: rgba(255,255,255,0.82);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.4;
  border-radius: 0;
  transition: background var(--transition), color var(--transition), padding-left var(--transition);
  min-height: 40px;
  display: flex;
  align-items: center;
}

.sidenav ol li a:hover,
.sidenav ol li a.active {
  background: var(--green);
  color: var(--dark);
  padding-left: 1.75rem;
}

.sidenav-contact {
  padding: 1rem 1.25rem;
  border-top: 2px dashed var(--dark3);
}

.contact-btn {
  display: block;
  text-align: center;
  padding: 0.6rem 1rem;
  background: var(--yellow);
  color: var(--dark);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: var(--radius-pill);
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition);
}

.contact-btn:hover {
  background: var(--green);
  transform: scale(1.04);
}

/* ===========================
   Hero（首页）
=========================== */
.hero-section {
  background: var(--dark);
  min-height: 100vh;
  display: flex;
  align-items: stretch;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 320px; height: 320px;
  background: var(--yellow);
  clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
  opacity: 0.18;
  transform: rotate(15deg);
}

.hero-section::after {
  content: '';
  position: absolute;
  bottom: -40px; left: 60px;
  width: 180px; height: 180px;
  border: 3px dashed var(--green);
  border-radius: 50%;
  opacity: 0.3;
}

.hero-inner {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 4rem 3rem;
  gap: 3rem;
  position: relative;
  z-index: 2;
}

.hero-text {
  flex: 1;
  min-width: 0;
}

.hero-badge {
  display: inline-block;
  background: var(--green);
  color: var(--dark);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.85rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
}

.hero-h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.18;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

.hero-desc {
  color: rgba(255,255,255,0.7);
  font-size: 1.05rem;
  margin-bottom: 2rem;
  max-width: 400px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.8rem 2rem;
  background: var(--green);
  color: var(--dark);
  font-weight: 800;
  font-size: 1rem;
  border-radius: var(--radius-pill);
  min-height: 48px;
  transition: background var(--transition), transform var(--transition);
  position: relative;
}

.hero-cta:hover {
  background: var(--yellow);
  transform: translateY(-2px) scale(1.03);
}

.hero-shapes {
  position: absolute;
  pointer-events: none;
}

.shape {
  position: absolute;
  display: block;
}

.shape-tri {
  width: 0; height: 0;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  border-bottom: 36px solid var(--yellow);
  top: -120px; left: 60px;
  transform: rotate(-15deg);
  opacity: 0.7;
}

.shape-dot {
  width: 14px; height: 14px;
  background: var(--green);
  border-radius: 50%;
  top: -80px; left: 150px;
  opacity: 0.8;
}

.shape-sq {
  width: 22px; height: 22px;
  background: var(--yellow);
  transform: rotate(30deg);
  top: -60px; left: 220px;
  opacity: 0.5;
}

.hero-media {
  flex: 0 0 42%;
  max-width: 500px;
  position: relative;
  align-self: center;
}

.hero-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, 96% 0, 100% 4%, 100% 100%, 4% 100%, 0 96%);
}

.hero-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--dark2);
  clip-path: polygon(0 0, 96% 0, 100% 4%, 100% 100%, 4% 100%, 0 96%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.geo-circle {
  display: block;
  width: 160px; height: 160px;
  border: 8px solid var(--green);
  border-radius: 50%;
  opacity: 0.4;
}

.geo-triangle {
  display: block;
  position: absolute;
  width: 0; height: 0;
  border-left: 60px solid transparent;
  border-right: 60px solid transparent;
  border-bottom: 104px solid var(--yellow);
  opacity: 0.25;
}

.hero-float-tag {
  position: absolute;
  top: 1rem;
  right: -0.75rem;
  background: var(--yellow);
  color: var(--dark);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-pill);
  transform: rotate(3deg);
  box-shadow: 3px 3px 0 var(--dark);
}

/* ===========================
   正文区（首页）
=========================== */
#main-content {
  flex: 1;
}

.content-section {
  display: flex;
  gap: 2.5rem;
  padding: 3rem 3rem 2rem;
  background: var(--light);
}

.content-body {
  flex: 1;
  min-width: 0;
}

.page-content {
  font-size: 1rem;
  line-height: 1.72;
  color: var(--text);
}

.page-content h2 { font-size: 1.4rem; font-weight: 800; margin: 1.5em 0 0.5em; color: var(--dark); }
.page-content h3 { font-size: 1.15rem; font-weight: 700; margin: 1.2em 0 0.4em; }
.page-content p { margin-bottom: 0.9em; }
.page-content ul, .page-content ol { margin: 0.7em 0 0.7em 1.4em; }
.page-content li { margin-bottom: 0.35em; }
.page-content a { color: var(--dark3); border-bottom: 1px solid var(--green); }
.page-content a:hover { color: var(--dark); border-bottom-color: var(--yellow); }
.page-content strong { font-weight: 700; }
.page-content time { font-size: 0.85rem; color: var(--text-muted); }
.page-content blockquote {
  border-left: 4px solid var(--green);
  padding: 0.5em 1em;
  background: rgba(135,255,113,0.08);
  margin: 1em 0;
  font-style: italic;
}

/* ===========================
   侧边栏 aside（通用）
=========================== */
.page-aside {
  flex: 0 0 220px;
  background: var(--dark);
  padding: 1.5rem 1.25rem;
  align-self: flex-start;
  position: sticky;
  top: 1rem;
}

.aside-eyebrow {
  display: block;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--green);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.aside-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1rem;
  border-bottom: 2px solid var(--yellow);
  padding-bottom: 0.4rem;
}

.aside-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.aside-nav-list li {
  border-bottom: 1px dashed var(--dark3);
  padding-bottom: 0.5rem;
}

.aside-nav-list li a {
  display: block;
  color: rgba(255,255,255,0.85);
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.4;
  min-height: 36px;
  display: flex;
  align-items: flex-start;
  padding: 0.15rem 0;
  transition: color var(--transition);
}

.aside-nav-list li a:hover { color: var(--green); }

.aside-nav-list li small {
  display: block;
  color: var(--text-muted);
  font-size: 0.72rem;
  line-height: 1.3;
  margin-top: 0.15rem;
}

/* ===========================
   首页卡片区
=========================== */
.cards-section {
  padding: 2rem 3rem 3rem;
  background: var(--light);
  position: relative;
}

.section-deco {
  margin: 0;
  pointer-events: none;
}

.deco-wave {
  display: block;
  height: 18px;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0px, transparent 8px,
      var(--green) 8px, var(--green) 10px
    );
  margin-bottom: 1.5rem;
  opacity: 0.35;
}

.section-eyebrow {
  display: block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.section-title {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 1.75rem;
  letter-spacing: -0.02em;
}

.card-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card-item {
  background: var(--dark);
  border-radius: 0;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
}

.card-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--green);
}

.card-item:nth-child(2n)::before { background: var(--yellow); }
.card-item:nth-child(3n)::before { background: linear-gradient(90deg, var(--green), var(--yellow)); }

.card-item:hover {
  transform: translateY(-4px) rotate(-0.5deg);
  box-shadow: 6px 6px 0 var(--dark);
}

.card-item > a {
  display: block;
  color: inherit;
  height: 100%;
}

.card-fig {
  margin: 0;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.card-item:hover .card-img { transform: scale(1.05); }

.card-body {
  padding: 1.1rem 1.25rem 1.25rem;
}

.card-tag {
  display: inline-block;
  background: var(--green);
  color: var(--dark);
  font-size: 0.68rem;
  font-weight: 800;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-pill);
  margin-bottom: 0.5rem;
  letter-spacing: 0.06em;
}

.card-title {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.4;
  margin-bottom: 0.4rem;
}

.card-body small {
  display: block;
  color: rgba(255,255,255,0.55);
  font-size: 0.8rem;
  line-height: 1.45;
  margin-bottom: 0.4rem;
}

.card-body time {
  display: block;
  color: var(--yellow);
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 0.5rem;
}

/* ===========================
   文章页
=========================== */
.article-main {
  flex: 1;
  padding: 0;
}

.article-section {
  padding: 2.5rem 3rem 3rem;
  position: relative;
}

.article-content-wrap {
  display: grid;
  grid-template-columns: 1fr 220px;
  grid-template-rows: auto auto auto;
  gap: 2rem;
  max-width: 1000px;
}

.article-header {
  grid-column: 1;
  grid-row: 1;
}

.article-meta-top {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.breadcrumb-link {
  color: var(--dark3);
  font-weight: 600;
}

.breadcrumb-link:hover { color: var(--dark); }

.breadcrumb-sep { color: var(--text-muted); }

.article-eyebrow {
  display: block;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.article-h1 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--dark);
  line-height: 1.22;
  margin-bottom: 0.75rem;
  letter-spacing: -0.025em;
}

.article-meta {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.meta-date {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
}

.article-hero-fig {
  grid-column: 1;
  grid-row: 2;
  margin: 0;
  position: relative;
}

.article-hero-img {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: cover;
  clip-path: polygon(0 0, 98% 0, 100% 3%, 100% 100%, 2% 100%, 0 97%);
}

.article-deco-tri {
  display: block;
  position: absolute;
  bottom: -10px; right: 20px;
  width: 0; height: 0;
  border-left: 16px solid transparent;
  border-right: 16px solid transparent;
  border-top: 28px solid var(--yellow);
  transform: rotate(10deg);
}

.article-aside {
  grid-column: 2;
  grid-row: 1 / 4;
  background: var(--dark);
  padding: 1.5rem 1.25rem;
  align-self: flex-start;
  position: sticky;
  top: 1rem;
}

.aside-related {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.aside-related li {
  border-bottom: 1px dashed var(--dark3);
  padding-bottom: 0.6rem;
}

.aside-related li:last-child { border-bottom: none; }

.aside-related li a {
  display: block;
  color: rgba(255,255,255,0.85);
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.4;
  transition: color var(--transition);
  min-height: 36px;
  display: flex;
  align-items: flex-start;
  padding: 0.1rem 0;
}

.aside-related li a:hover { color: var(--green); }

.aside-related li small {
  display: block;
  color: var(--text-muted);
  font-size: 0.72rem;
  line-height: 1.3;
  margin-top: 0.15rem;
}

.aside-nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.aside-link-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.4rem 1rem;
  background: var(--dark3);
  color: rgba(255,255,255,0.9);
  font-size: 0.82rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  text-align: center;
  transition: background var(--transition);
}

.aside-link-btn:hover { background: var(--green); color: var(--dark); }

.article-body {
  grid-column: 1;
  grid-row: 3;
  font-size: 1.02rem;
  line-height: 1.78;
  color: var(--text);
}

.article-body h2 { font-size: 1.35rem; font-weight: 800; margin: 1.6em 0 0.55em; color: var(--dark); }
.article-body h3 { font-size: 1.12rem; font-weight: 700; margin: 1.25em 0 0.4em; }
.article-body p { margin-bottom: 0.95em; }
.article-body ul, .article-body ol { margin: 0.7em 0 0.7em 1.5em; }
.article-body li { margin-bottom: 0.35em; }
.article-body a { color: var(--dark3); border-bottom: 1px solid var(--green); }
.article-body a:hover { border-bottom-color: var(--yellow); }
.article-body strong { font-weight: 700; }
.article-body blockquote {
  border-left: 4px solid var(--yellow);
  padding: 0.5em 1em;
  background: rgba(255,206,92,0.1);
  margin: 1em 0;
}
.article-body time { font-size: 0.85rem; color: var(--text-muted); font-weight: 600; }

.article-footer-nav {
  grid-column: 1;
  display: flex;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 2px dashed var(--dark3);
  margin-top: 1rem;
}

.back-home {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.4rem 1.2rem;
  background: var(--dark);
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  transition: background var(--transition);
}

.back-home:hover { background: var(--green); color: var(--dark); }

/* ===========================
   About 页
=========================== */
.about-main { flex: 1; }

.about-hero-section {
  display: flex;
  align-items: flex-start;
  gap: 2.5rem;
  padding: 3rem 3rem 2rem;
  background: var(--dark);
  min-height: 55vh;
  position: relative;
  overflow: hidden;
}

.about-deco-fig {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  margin: 0;
  pointer-events: none;
}

.deco-big-circle {
  display: block;
  position: absolute;
  width: 300px; height: 300px;
  border: 16px solid var(--green);
  border-radius: 50%;
  top: -100px; right: -80px;
  opacity: 0.13;
}

.deco-zigzag {
  display: block;
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 24px;
  background:
    repeating-linear-gradient(
      135deg,
      var(--yellow) 0px, var(--yellow) 12px,
      transparent 12px, transparent 24px
    );
  opacity: 0.18;
}

.about-aside {
  flex: 0 0 220px;
  background: var(--dark2);
  padding: 1.5rem 1.25rem;
  position: relative;
  z-index: 2;
  border: 1px dashed var(--dark3);
}

.about-header {
  flex: 1;
  position: relative;
  z-index: 2;
  padding-top: 1rem;
}

.about-h1 {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.18;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

.about-intro {
  color: rgba(255,255,255,0.7);
  font-size: 1.05rem;
  max-width: 480px;
}

.about-content-section {
  padding: 3rem;
  background: var(--light);
  position: relative;
}

.about-content-deco {
  margin: 0;
  pointer-events: none;
}

.deco-dot-grid {
  display: block;
  position: absolute;
  top: 1.5rem; right: 2rem;
  width: 80px; height: 80px;
  background-image: radial-gradient(var(--dark3) 1.5px, transparent 1.5px);
  background-size: 12px 12px;
  opacity: 0.35;
}

.about-body {
  max-width: 700px;
  font-size: 1.02rem;
  line-height: 1.78;
}

.about-body h2 { font-size: 1.35rem; font-weight: 800; margin: 1.5em 0 0.5em; }
.about-body h3 { font-size: 1.1rem; font-weight: 700; margin: 1.2em 0 0.4em; }
.about-body p { margin-bottom: 0.9em; }
.about-body ul, .about-body ol { margin: 0.7em 0 0.7em 1.5em; }
.about-body li { margin-bottom: 0.35em; }
.about-body a { color: var(--dark3); border-bottom: 1px solid var(--green); }
.about-body a:hover { border-bottom-color: var(--yellow); }
.about-body strong { font-weight: 700; }
.about-body time { font-size: 0.85rem; color: var(--text-muted); }

/* ===========================
   Privacy 页
=========================== */
.privacy-main { flex: 1; }

.privacy-section {
  display: flex;
  gap: 2.5rem;
  padding: 2.5rem 3rem 3rem;
  position: relative;
}

.privacy-deco-fig {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 8px;
  margin: 0;
  pointer-events: none;
}

.deco-stripe {
  display: block;
  height: 8px;
  background: repeating-linear-gradient(
    90deg,
    var(--green) 0px, var(--green) 20px,
    var(--yellow) 20px, var(--yellow) 40px,
    var(--dark) 40px, var(--dark) 60px
  );
}

.privacy-aside {
  flex: 0 0 220px;
  background: var(--dark);
  padding: 1.5rem 1.25rem;
  align-self: flex-start;
  position: sticky;
  top: 1rem;
}

.privacy-content-wrap {
  flex: 1;
  min-width: 0;
  max-width: 700px;
}

.privacy-header {
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 3px solid var(--green);
}

.privacy-h1 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--dark);
  line-height: 1.22;
  margin-bottom: 0.5rem;
  letter-spacing: -0.025em;
}

.privacy-body {
  font-size: 1rem;
  line-height: 1.78;
  color: var(--text);
}

.privacy-body h2 { font-size: 1.25rem; font-weight: 800; margin: 1.5em 0 0.5em; }
.privacy-body h3 { font-size: 1.05rem; font-weight: 700; margin: 1.2em 0 0.4em; }
.privacy-body p { margin-bottom: 0.9em; }
.privacy-body ul, .privacy-body ol { margin: 0.7em 0 0.7em 1.5em; }
.privacy-body li { margin-bottom: 0.3em; }
.privacy-body a { color: var(--dark3); border-bottom: 1px solid var(--green); }
.privacy-body a:hover { border-bottom-color: var(--yellow); }
.privacy-body time { font-size: 0.85rem; color: var(--text-muted); }
.privacy-body strong { font-weight: 700; }

.privacy-footer-nav {
  display: flex;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 2px dashed var(--dark3);
  margin-top: 2rem;
}

/* ===========================
   页脚
=========================== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.75);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 2rem;
  padding: 3rem 3rem 2rem;
  border-bottom: 1px solid var(--dark3);
}

.footer-brand .footer-logo {
  width: 48px; height: 48px;
  object-fit: contain;
  margin-bottom: 0.75rem;
}

.footer-brand-text {
  display: block;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--green);
  margin-bottom: 0.6rem;
}

.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.55;
  color: rgba(255,255,255,0.55);
}

.footer-nav-col > strong {
  display: block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 0.9rem;
}

.footer-nav-col nav ol {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.footer-nav-col nav ol li a {
  color: rgba(255,255,255,0.65);
  font-size: 0.85rem;
  min-height: 32px;
  display: flex;
  align-items: center;
  transition: color var(--transition);
}

.footer-nav-col nav ol li a:hover { color: var(--green); }

.footer-contact > strong {
  display: block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 0.9rem;
}

.footer-contact p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 0.9rem;
}

.footer-contact-btn {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.4rem 1.2rem;
  background: var(--green);
  color: var(--dark);
  font-size: 0.88rem;
  font-weight: 800;
  border-radius: var(--radius-pill);
  transition: background var(--transition), transform var(--transition);
}

.footer-contact-btn:hover {
  background: var(--yellow);
  transform: scale(1.04);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 3rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-bottom nav {
  display: flex;
  gap: 1.25rem;
}

.footer-bottom nav a {
  color: rgba(255,255,255,0.5);
  font-size: 0.82rem;
  min-height: 32px;
  display: flex;
  align-items: center;
  transition: color var(--transition);
}

.footer-bottom nav a:hover { color: var(--green); }

.footer-copy {
  color: rgba(255,255,255,0.4);
  font-size: 0.8rem;
}

/* ===========================
   Scroll Reveal 动效
=========================== */
@media (prefers-reduced-motion: no-preference) {
  .card-item,
  .article-body,
  .about-body,
  .privacy-body,
  .aside-related li,
  .aside-nav-list li {
    opacity: 0;
    transform: translateY(24px);
    animation: revealUp 0.5s ease forwards;
  }

  .card-item:nth-child(1) { animation-delay: 0.05s; }
  .card-item:nth-child(2) { animation-delay: 0.12s; }
  .card-item:nth-child(3) { animation-delay: 0.19s; }
  .card-item:nth-child(4) { animation-delay: 0.26s; }
  .card-item:nth-child(5) { animation-delay: 0.33s; }
  .card-item:nth-child(6) { animation-delay: 0.40s; }
  .card-item:nth-child(7) { animation-delay: 0.47s; }
  .card-item:nth-child(8) { animation-delay: 0.54s; }

  .article-body { animation-delay: 0.1s; }
  .about-body { animation-delay: 0.1s; }
  .privacy-body { animation-delay: 0.1s; }

  .aside-related li:nth-child(1) { animation-delay: 0.1s; }
  .aside-related li:nth-child(2) { animation-delay: 0.17s; }
  .aside-related li:nth-child(3) { animation-delay: 0.24s; }
  .aside-related li:nth-child(4) { animation-delay: 0.31s; }
  .aside-related li:nth-child(5) { animation-delay: 0.38s; }

  @keyframes revealUp {
    to { opacity: 1; transform: translateY(0); }
  }

  .sidenav ol li a {
    transition: background var(--transition), color var(--transition), padding-left var(--transition), transform var(--transition);
  }

  .hero-badge {
    animation: popIn 0.4s cubic-bezier(.4,0,.2,1) 0.2s both;
  }

  @keyframes popIn {
    from { transform: scale(0.7); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
  }
}

/* ===========================
   响应式
=========================== */
@media (max-width: 900px) {
  :root { --sidenav-w: 0px; }

  .sidenav {
    position: static;
    width: 100%;
    height: auto;
    flex-direction: row;
    align-items: center;
    padding: 0;
    overflow-x: auto;
    overflow-y: visible;
    flex-wrap: nowrap;
  }

  .sidenav-brand {
    padding: 0.75rem 1rem;
    border-bottom: none;
    border-right: 2px dashed var(--dark3);
    flex-shrink: 0;
  }

  .sidenav ol {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    padding: 0;
    overflow-x: auto;
    flex: 1;
  }

  .sidenav ol li a {
    white-space: nowrap;
    padding: 0.75rem 1rem;
    font-size: 0.8rem;
  }

  .sidenav ol li a:hover,
  .sidenav ol li a.active {
    padding-left: 1rem;
  }

  .sidenav-contact {
    border-top: none;
    border-left: 2px dashed var(--dark3);
    padding: 0.75rem 1rem;
    flex-shrink: 0;
  }

  .main-area { margin-left: 0; }

  .site-wrap { flex-direction: column; }

  .hero-inner {
    flex-direction: column;
    padding: 2.5rem 1.5rem;
    gap: 2rem;
  }

  .hero-media { flex: none; max-width: 100%; width: 100%; }

  .content-section { flex-direction: column; padding: 2rem 1.5rem; }
  .page-aside { position: static; flex: none; width: 100%; }

  .cards-section { padding: 1.5rem 1.5rem 2.5rem; }

  .card-list { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

  .article-section { padding: 2rem 1.5rem; }
  .article-content-wrap {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }
  .article-header { grid-column: 1; grid-row: 1; }
  .article-hero-fig { grid-column: 1; grid-row: 2; }
  .article-aside { grid-column: 1; grid-row: 3; position: static; }
  .article-body { grid-column: 1; grid-row: 4; }
  .article-footer-nav { grid-column: 1; }

  .about-hero-section { flex-direction: column; padding: 2rem 1.5rem; min-height: auto; }
  .about-aside { flex: none; width: 100%; position: static; }

  .about-content-section { padding: 2rem 1.5rem; }

  .privacy-section { flex-direction: column; padding: 2rem 1.5rem; }
  .privacy-aside { flex: none; width: 100%; position: static; }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    padding: 2rem 1.5rem 1.5rem;
  }

  .footer-brand { grid-column: 1 / -1; }

  .footer-bottom { padding: 1rem 1.5rem; }
}

@media (max-width: 540px) {
  .hero-h1 { font-size: 1.75rem; }
  .hero-inner { padding: 2rem 1rem; }

  .content-section { padding: 1.5rem 1rem; }
  .cards-section { padding: 1.25rem 1rem 2rem; }

  .card-list { grid-template-columns: 1fr; }

  .article-section { padding: 1.5rem 1rem; }
  .about-hero-section { padding: 1.5rem 1rem; }
  .about-content-section { padding: 1.5rem 1rem; }
  .privacy-section { padding: 1.5rem 1rem; }

  .footer-top { grid-template-columns: 1fr; padding: 1.5rem 1rem 1rem; }
  .footer-bottom { padding: 0.75rem 1rem; flex-direction: column; text-align: center; }
  .footer-bottom nav { justify-content: center; }

  .sidenav ol li a { font-size: 0.75rem; padding: 0.75rem 0.75rem; min-height: 44px; }
  .contact-btn { min-height: 44px; padding: 0.5rem 0.75rem; font-size: 0.78rem; }

  .article-footer-nav { flex-direction: column; }
  .privacy-footer-nav { flex-direction: column; }
}