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

/* ===== CSS 变量 ===== */
:root {
  --c-blue: #c8e0f4;
  --c-pink: #f5e0e8;
  --c-ink: #171f26;
  --c-blue-dark: #a8c8e8;
  --c-blue-light: #e4f0fa;
  --c-pink-dark: #e8c8d8;
  --c-pink-light: #faf0f4;
  --c-ink-muted: #3a4a58;
  --c-ink-light: #6a7a88;
  --c-white: #ffffff;
  --c-bg: #d6e8f6;

  --shadow-out:
    -6px -6px 16px rgba(255,255,255,0.85),
    6px 6px 16px rgba(100,140,180,0.35);
  --shadow-out-sm:
    -4px -4px 10px rgba(255,255,255,0.8),
    4px 4px 10px rgba(100,140,180,0.3);
  --shadow-in:
    inset -4px -4px 10px rgba(255,255,255,0.75),
    inset 4px 4px 10px rgba(100,140,180,0.3);
  --shadow-in-sm:
    inset -3px -3px 8px rgba(255,255,255,0.7),
    inset 3px 3px 8px rgba(100,140,180,0.25);

  --radius: 14px;
  --radius-sm: 8px;
  --font-serif: 'Newsreader', 'Noto Serif SC', Georgia, serif;
  --font-sans: 'Roboto', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --nav-h: 64px;
  --anchor-h: 48px;
  --trans: 150ms ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + var(--anchor-h) + 8px);
  font-size: 17px;
  -webkit-text-size-adjust: 100%;
}

body, .neu-body {
  background-color: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  overflow-x: hidden;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ===== 通用工具 ===== */
a { color: var(--c-ink-muted); text-decoration: none; }
a:hover { color: var(--c-ink); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-serif); line-height: 1.3; }

/* ===== Neumorphism 卡片 ===== */
.neu-card {
  background: var(--c-blue);
  border-radius: var(--radius);
  box-shadow: var(--shadow-out);
  padding: 1.5rem;
}

.neu-card-inset {
  background: var(--c-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-in);
  padding: 1.5rem;
}

.neu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: box-shadow var(--trans), transform var(--trans), background var(--trans);
}

.btn-primary {
  background: linear-gradient(145deg, var(--c-blue-light), var(--c-blue-dark));
  color: var(--c-ink);
  box-shadow: var(--shadow-out-sm);
}
.btn-primary:hover {
  box-shadow: -3px -3px 8px rgba(255,255,255,0.9), 3px 3px 8px rgba(100,140,180,0.4);
  color: var(--c-ink);
}
.btn-primary:active {
  box-shadow: var(--shadow-in-sm);
  transform: scale(0.98);
}

.btn-ghost {
  background: linear-gradient(145deg, var(--c-pink-light), var(--c-pink-dark));
  color: var(--c-ink);
  box-shadow: var(--shadow-out-sm);
}
.btn-ghost:hover {
  box-shadow: -3px -3px 8px rgba(255,255,255,0.9), 3px 3px 8px rgba(200,140,160,0.35);
  color: var(--c-ink);
}
.btn-ghost:active {
  box-shadow: var(--shadow-in-sm);
  transform: scale(0.98);
}

/* ===== 页面整体 ===== */
.page-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--c-bg);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1.5rem;
  height: var(--nav-h);
  background: var(--c-bg);
  box-shadow: 0 2px 12px rgba(100,140,180,0.2);
}

.brand-mark {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow-out-sm);
}

.brand-text-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--c-blue-light), var(--c-blue-dark));
  box-shadow: var(--shadow-out-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1rem;
  color: var(--c-ink);
}

.main-nav {
  flex: 1;
  overflow: hidden;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
  align-items: center;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--c-ink-muted);
  white-space: nowrap;
  transition: box-shadow var(--trans), color var(--trans), background var(--trans);
}

.nav-links a:hover {
  color: var(--c-ink);
  background: linear-gradient(145deg, var(--c-blue-light), var(--c-blue));
  box-shadow: var(--shadow-out-sm);
}

.header-contact {
  flex-shrink: 0;
}

.contact-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  background: linear-gradient(145deg, var(--c-pink-light), var(--c-pink-dark));
  box-shadow: var(--shadow-out-sm);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--c-ink);
  white-space: nowrap;
}

/* ===== 粘性锚点条 ===== */
.sticky-anchor-bar {
  background: linear-gradient(to right, var(--c-blue), var(--c-pink));
  box-shadow: 0 2px 8px rgba(100,140,180,0.18);
  overflow-x: auto;
  scrollbar-width: none;
}
.sticky-anchor-bar::-webkit-scrollbar { display: none; }

.anchor-nav { padding: 0 1.5rem; }

.anchor-links {
  display: flex;
  gap: 0;
  align-items: center;
  white-space: nowrap;
  height: var(--anchor-h);
}

.anchor-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.3rem 1rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--c-ink-muted);
  border-radius: var(--radius-sm);
  transition: background var(--trans), color var(--trans), box-shadow var(--trans);
}

.anchor-links a:hover {
  color: var(--c-ink);
  background: rgba(255,255,255,0.45);
  box-shadow: var(--shadow-out-sm);
}

/* ===== Hero ===== */
.hero-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4rem 1.5rem 3rem;
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, var(--c-blue) 0%, var(--c-bg) 50%, var(--c-pink) 100%);
}

.hero-content {
  max-width: 540px;
  margin-left: auto;
  text-align: right;
  z-index: 2;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: 999px;
  background: linear-gradient(145deg, var(--c-pink-light), var(--c-pink));
  box-shadow: var(--shadow-out-sm);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--c-ink-muted);
  margin-bottom: 1.2rem;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #e05080;
  box-shadow: 0 0 6px rgba(224,80,128,0.5);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--c-ink);
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.hero-desc {
  font-size: 1rem;
  color: var(--c-ink-muted);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.hero-figure {
  position: absolute;
  left: 3%;
  top: 50%;
  transform: translateY(-50%);
  width: min(340px, 40vw);
  z-index: 1;
}

.hero-visual {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--c-blue-light), var(--c-blue));
  box-shadow: var(--shadow-in);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.visual-orb {
  position: absolute;
  border-radius: 50%;
}
.orb-1 {
  width: 55%;
  height: 55%;
  background: linear-gradient(145deg, var(--c-pink-light), var(--c-pink));
  box-shadow: var(--shadow-out-sm);
  top: 15%;
  left: 15%;
  animation: float1 6s ease-in-out infinite;
}
.orb-2 {
  width: 30%;
  height: 30%;
  background: linear-gradient(145deg, var(--c-blue-light), var(--c-blue-dark));
  box-shadow: var(--shadow-out-sm);
  bottom: 12%;
  right: 12%;
  animation: float2 8s ease-in-out infinite;
}
.orb-3 {
  width: 18%;
  height: 18%;
  background: var(--c-pink-dark);
  top: 60%;
  left: 20%;
  animation: float3 5s ease-in-out infinite;
}

@keyframes float1 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(6px, -8px); }
}
@keyframes float2 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-5px, 6px); }
}
@keyframes float3 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(4px, 5px); }
}

.visual-label {
  position: absolute;
  bottom: 18%;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--c-ink);
  white-space: nowrap;
  background: rgba(200,224,244,0.6);
  padding: 0.25rem 0.8rem;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

/* ===== 内容区 ===== */
.content-section {
  display: flex;
  gap: 2rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  width: 100%;
  align-items: flex-start;
}

/* aside 在内容左侧 */
.content-aside {
  flex-shrink: 0;
  width: 220px;
  position: sticky;
  top: calc(var(--nav-h) + var(--anchor-h) + 16px);
}

.aside-inner {
  background: linear-gradient(145deg, var(--c-blue-light), var(--c-blue));
}

.aside-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-ink);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--c-blue-dark);
}

.aside-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.aside-link {
  display: block;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--c-ink-muted);
  line-height: 1.4;
  transition: background var(--trans), color var(--trans), box-shadow var(--trans);
}

.aside-link:hover {
  background: rgba(255,255,255,0.5);
  color: var(--c-ink);
  box-shadow: var(--shadow-in-sm);
}

.aside-tip {
  font-size: 0.82rem;
  color: var(--c-ink-muted);
  line-height: 1.5;
}

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

.content-figure {
  margin-bottom: 2rem;
  background: linear-gradient(145deg, var(--c-pink-light), var(--c-pink));
}

.figure-caption h2 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--c-ink);
}

.figure-caption p {
  font-size: 0.9rem;
  color: var(--c-ink-muted);
}

/* ===== page.content 正文样式 ===== */
.page-content-wrap {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.page-content-wrap article {
  background: linear-gradient(145deg, var(--c-blue-light), var(--c-blue));
  border-radius: var(--radius);
  box-shadow: var(--shadow-out);
  padding: 2rem;
  scroll-margin-top: calc(var(--nav-h) + var(--anchor-h) + 16px);
  transition: box-shadow 300ms ease;
}

.page-content-wrap article:hover {
  box-shadow:
    -8px -8px 20px rgba(255,255,255,0.9),
    8px 8px 20px rgba(100,140,180,0.4);
}

.page-content-wrap article:nth-child(even) {
  background: linear-gradient(145deg, var(--c-pink-light), var(--c-pink));
}

.page-content-wrap h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 1rem;
  position: relative;
}

.page-content-wrap h2::after {
  content: '';
  display: block;
  width: 3rem;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(to right, var(--c-blue-dark), var(--c-pink-dark));
  margin-top: 0.5rem;
}

.page-content-wrap h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--c-ink);
  margin: 1.2rem 0 0.6rem;
}

.page-content-wrap p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-ink-muted);
  margin-bottom: 0.8rem;
}

.page-content-wrap ul,
.page-content-wrap ol {
  padding-left: 1.4rem;
  margin-bottom: 0.8rem;
}

.page-content-wrap li {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-ink-muted);
  margin-bottom: 0.4rem;
}

.page-content-wrap a {
  color: #4a80b8;
  text-decoration: underline;
  text-decoration-color: rgba(74,128,184,0.4);
  transition: color var(--trans);
}

.page-content-wrap a:hover {
  color: var(--c-ink);
}

.page-content-wrap figure {
  margin: 1.2rem 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-content-wrap aside {
  background: rgba(255,255,255,0.35);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-in-sm);
  padding: 1rem 1.2rem;
  margin: 1rem 0;
  font-size: 0.9rem;
  color: var(--c-ink-muted);
}

.page-content-wrap strong {
  color: var(--c-ink);
  font-weight: 600;
}

.page-content-wrap blockquote {
  border-left: 3px solid var(--c-blue-dark);
  padding-left: 1rem;
  color: var(--c-ink-muted);
  font-style: italic;
  margin: 1rem 0;
}

/* ===== Scroll Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ===== 页脚 ===== */
.site-footer {
  margin-top: auto;
  background: linear-gradient(to right, var(--c-blue), var(--c-pink));
  box-shadow: 0 -2px 12px rgba(100,140,180,0.2);
  padding: 0;
}

.site-footer article {
  text-align: center;
  padding: 0.75rem 1.5rem;
}

.site-footer article:first-child {
  border-bottom: 1px solid rgba(255,255,255,0.3);
}

.site-footer p {
  font-size: 0.82rem;
  color: var(--c-ink-muted);
  line-height: 1.5;
}

.site-footer span {
  font-weight: 600;
  color: var(--c-ink);
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .content-aside {
    display: none;
  }

  .hero-figure {
    width: min(200px, 35vw);
    left: 1%;
  }

  .hero-content {
    max-width: 100%;
  }
}

@media (max-width: 640px) {
  :root {
    --nav-h: 56px;
    --anchor-h: 44px;
  }

  .header-inner {
    padding: 0 1rem;
    gap: 0.6rem;
  }

  .main-nav {
    display: none;
  }

  .contact-badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
  }

  .hero-section {
    padding: 2rem 1rem 2.5rem;
    min-height: 100svh;
  }

  .hero-figure {
    position: static;
    transform: none;
    width: 160px;
    margin: 0 auto 1.5rem;
  }

  .hero-section {
    flex-direction: column;
    align-items: center;
  }

  .hero-content {
    text-align: center;
  }

  .hero-cta {
    justify-content: center;
  }

  .content-section {
    padding: 2rem 1rem 3rem;
  }

  .page-content-wrap article {
    padding: 1.4rem 1rem;
  }

  .anchor-links a {
    padding: 0.3rem 0.7rem;
    font-size: 0.78rem;
  }

  .nav-links a {
    min-height: 44px;
    font-size: 0.85rem;
  }
}

@media (max-width: 375px) {
  .hero-title {
    font-size: 1.6rem;
  }

  .hero-badge {
    font-size: 0.75rem;
  }

  .btn-primary, .btn-ghost {
    font-size: 0.88rem;
    padding: 0.55rem 1rem;
  }
}

button[aria-expanded]{min-width:44px;min-height:44px}