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

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

:root {
  --bg: #fafaf8;
  --mid: #4a4a4a;
  --ink: #1a1a1a;
  --white: #ffffff;
  --accent: #1a1a1a;
  --glass-bg: rgba(255,255,255,0.55);
  --glass-border: rgba(26,26,26,0.18);
  --radius-card: 18px;
  --radius-btn: 999px;
  --font: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --nav-h: 64px;
  --shadow-raw: 4px 4px 0 var(--ink);
  --shadow-card: 3px 3px 0 rgba(26,26,26,0.25);
}

html {
  font-size: 17px;
  line-height: 1.6;
  scroll-behavior: smooth;
  background: var(--bg);
  color: var(--ink);
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  padding-bottom: calc(var(--nav-h) + 1rem);
  overflow-x: hidden;
}

/* Paper texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.5;
}

/* ===== 排版 ===== */
h1, h2, h3, h4 {
  font-family: var(--font);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  text-transform: uppercase;
  color: var(--ink);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); }

p { margin-bottom: 1rem; }
a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
a:hover { text-decoration: none; }
ul, ol { padding-left: 1.4rem; }
li { margin-bottom: 0.4rem; }

hr {
  border: none;
  border-top: 2px solid var(--ink);
  margin: 1rem 0 1.5rem;
  transform: rotate(-0.3deg);
}

/* ===== 固定底部导航 ===== */
.nav-bar-fixed {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--ink);
  border-top: 2px solid var(--mid);
  height: var(--nav-h);
  display: flex;
  align-items: center;
}

.nav-inner {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  min-height: 40px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg);
  color: var(--ink);
  font-weight: 700;
  font-size: 1rem;
  border-radius: 8px;
  text-transform: uppercase;
  font-family: var(--font);
  transform: rotate(-2deg);
}

.nav-brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

/* details/summary 导航 */
.nav-details {
  flex: 1;
  position: relative;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.2rem;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius-btn);
  cursor: pointer;
  user-select: none;
  list-style: none;
  border: 2px solid var(--bg);
  min-height: 40px;
  transition: none;
}

.nav-toggle::-webkit-details-marker { display: none; }

.nav-details[open] .nav-toggle {
  background: var(--mid);
  color: var(--bg);
}

.nav-menu {
  position: absolute;
  bottom: calc(100% + 0.75rem);
  left: 0;
  background: var(--bg);
  border: 2px solid var(--ink);
  border-radius: 12px;
  padding: 0.5rem;
  list-style: none;
  min-width: 260px;
  box-shadow: var(--shadow-raw);
  transform: rotate(-0.5deg);
}

.nav-menu li {
  margin: 0;
}

.nav-menu li a {
  display: block;
  padding: 0.65rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink);
  border-radius: 8px;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.nav-menu li a:hover {
  background: var(--ink);
  color: var(--bg);
}

/* ===== 胶囊药丸快捷菜单（桌面扩展） ===== */
@media (min-width: 768px) {
  .nav-details {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  .nav-menu {
    position: absolute;
    bottom: calc(100% + 0.75rem);
    left: 0;
    min-width: 280px;
  }
}

/* ===== 玻璃拟态卡片 ===== */
.glass-card {
  background: var(--glass-bg);
  border: 1.5px solid var(--glass-border);
  border-radius: var(--radius-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: none;
  position: relative;
}

.glass-card:hover {
  transform: translate(-2px, -2px) rotate(-0.5deg);
  box-shadow: 6px 6px 0 rgba(26,26,26,0.3);
}

/* ===== Sketch Frame ===== */
.sketch-frame {
  border: 2px solid var(--ink);
  border-radius: 12px;
  padding: 1.5rem;
  position: relative;
  transform: rotate(0.3deg);
  background: var(--bg);
}

.sketch-frame::before {
  content: '';
  position: absolute;
  inset: 3px;
  border: 1px dashed var(--mid);
  border-radius: 10px;
  pointer-events: none;
  opacity: 0.5;
}

/* ===== 徽章/标签 ===== */
.sketch-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.8rem;
  background: var(--ink);
  color: var(--bg);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: var(--radius-btn);
  transform: rotate(-1.5deg);
  margin-bottom: 0.75rem;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.6rem;
  background: var(--ink);
  color: var(--bg);
  font-family: var(--font);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: var(--radius-btn);
  text-decoration: none;
  border: 2px solid var(--ink);
  min-height: 44px;
  cursor: pointer;
  transition: none;
}

.btn-primary:hover {
  background: var(--mid);
  border-color: var(--mid);
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--ink);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.6rem;
  background: transparent;
  color: var(--ink);
  font-family: var(--font);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: var(--radius-btn);
  text-decoration: none;
  border: 2px solid var(--ink);
  min-height: 44px;
  cursor: pointer;
  transition: none;
}

.btn-outline:hover {
  background: var(--ink);
  color: var(--bg);
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--mid);
}

/* ===== aside 通用 ===== */
.aside-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mid);
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--ink);
}

.aside-links {
  list-style: none;
  padding: 0;
}

.aside-links li {
  margin-bottom: 0;
  border-bottom: 1px dashed rgba(26,26,26,0.2);
}

.aside-links li a {
  display: flex;
  align-items: center;
  padding: 0.55rem 0;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  min-height: 40px;
}

.aside-links li a:hover {
  color: var(--mid);
  text-decoration: underline;
}

.aside-home {
  display: inline-flex;
  align-items: center;
  margin-top: 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--mid);
  text-decoration: none;
  min-height: 40px;
}

.aside-meta, .aside-meta time {
  display: block;
  font-size: 0.8rem;
  color: var(--mid);
  margin-top: 1rem;
}

/* ===== 正文 prose ===== */
.prose {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink);
  max-width: 72ch;
}

.prose h2, .prose h3 { margin: 1.5rem 0 0.75rem; }
.prose p { margin-bottom: 1rem; }
.prose ul, .prose ol { margin-bottom: 1rem; }
.prose a { color: var(--ink); font-weight: 600; }
.prose strong { font-weight: 700; }

time.pub-date, time.mod-date {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--mid);
  font-weight: 500;
  margin-right: 1rem;
  margin-top: 0.5rem;
}

/* ===== 首页 ===== */
.main-home { padding-top: 0; }

/* Hero */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 3rem 2rem 5rem;
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
}

.hero-aside {
  flex: 0 0 45%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-right: 2rem;
}

.hero-h1 {
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  line-height: 1.05;
  margin: 0.5rem 0 1rem;
}

.hero-desc {
  font-size: 1.1rem;
  line-height: 1.65;
  color: var(--mid);
  margin-bottom: 1.5rem;
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.hero-figure {
  flex: 0 0 50%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-img-wrap {
  width: 100%;
  max-width: 500px;
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
}

.hero-placeholder {
  width: 100%;
  min-height: 380px;
  background: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
}

.hero-placeholder span {
  font-size: 5rem;
  font-weight: 700;
  color: var(--bg);
  text-transform: uppercase;
  letter-spacing: -0.04em;
  opacity: 0.85;
}

.float-tag {
  position: absolute;
  background: var(--bg);
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.9rem;
  border: 2px solid var(--ink);
  border-radius: var(--radius-btn);
  box-shadow: 2px 2px 0 var(--ink);
}

.tag-1 { top: 12%; right: -5%; transform: rotate(2deg); }
.tag-2 { bottom: 18%; left: -4%; transform: rotate(-3deg); }

/* 内容区 */
.content-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 2rem;
  display: flex;
  gap: 3rem;
  border-top: 2px solid var(--ink);
}

.content-aside {
  flex: 0 0 220px;
  position: sticky;
  top: 2rem;
  height: fit-content;
}

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

/* 功能卡片 */
.features-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 2rem;
  border-top: 2px solid var(--ink);
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-bottom: 0.25rem;
}

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

.card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mid);
}

.card h3 {
  font-size: 1rem;
  margin: 0;
  text-transform: uppercase;
}

.card h3 a {
  text-decoration: none;
  color: var(--ink);
}

.card h3 a:hover { text-decoration: underline; }

.card p {
  font-size: 0.9rem;
  color: var(--mid);
  margin: 0;
  flex: 1;
}

.card time {
  font-size: 0.78rem;
  color: var(--mid);
}

.card-more {
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink);
  text-decoration: none;
  margin-top: 0.5rem;
}

.card-more:hover { text-decoration: underline; }

/* 导航表格 */
.nav-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 2rem;
  border-top: 2px solid var(--ink);
}

.nav-table-wrap {
  overflow-x: auto;
  margin-top: 1.5rem;
}

.nav-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.nav-table tr {
  border-bottom: 1px solid rgba(26,26,26,0.2);
}

.nav-table tr:last-child { border-bottom: none; }

.nav-table td {
  padding: 0.8rem 1rem;
  vertical-align: middle;
}

.nav-table td:first-child {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
  width: 35%;
}

.nav-table td a {
  text-decoration: none;
  color: var(--ink);
}

.nav-table td a:hover { text-decoration: underline; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--ink);
  color: var(--bg);
  text-align: center;
  padding: 3rem 2rem 5rem;
  margin-top: 4rem;
}

.footer-brand {
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--bg);
  margin-bottom: 1rem;
  opacity: 0.9;
}

.site-footer small {
  display: block;
  font-size: 0.82rem;
  color: rgba(250,250,248,0.6);
  margin-top: 0.5rem;
}

.site-footer small a {
  color: rgba(250,250,248,0.8);
  text-decoration: underline;
  margin: 0 0.4rem;
}

.site-footer small a:hover { color: var(--bg); }

/* ===== Feature 页 ===== */
.main-feature { padding-top: 0; }

.feature-hero {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 2rem 2rem;
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
  border-bottom: 2px solid var(--ink);
}

.feature-aside-left {
  flex: 0 0 200px;
  position: sticky;
  top: 2rem;
  height: fit-content;
}

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

.feature-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mid);
  margin-bottom: 0.5rem;
}

.feature-h1 {
  margin-bottom: 0.75rem;
}

.feature-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.feature-fig {
  margin-top: 1.5rem;
  max-width: 600px;
}

.feature-hero-img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
}

.feature-body-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: flex;
  gap: 2.5rem;
}

.feature-aside-body {
  flex: 0 0 200px;
  position: sticky;
  top: 2rem;
  height: fit-content;
}

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

/* ===== Pricing 页 ===== */
.main-pricing { padding-top: 0; }

.pricing-header {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 2rem 2rem;
  display: flex;
  gap: 2.5rem;
  border-bottom: 2px solid var(--ink);
}

.pricing-aside {
  flex: 0 0 200px;
  position: sticky;
  top: 2rem;
  height: fit-content;
}

.pricing-intro {
  flex: 1;
}

.pricing-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mid);
  margin-bottom: 0.5rem;
}

.pricing-h1 { margin-bottom: 0.75rem; }

.pricing-desc {
  font-size: 1.05rem;
  color: var(--mid);
  max-width: 60ch;
}

.pricing-plans {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  border-bottom: 2px solid var(--ink);
}

.pricing-figure {
  margin-top: 1.5rem;
}

.pricing-cards {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.price-card {
  flex: 1 1 260px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
}

.price-card-featured {
  border-color: var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
}

.price-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mid);
}

.price-amount {
  font-size: 2rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

.price-badge {
  position: absolute;
  top: -1rem;
  right: 1rem;
}

.price-features {
  list-style: none;
  padding: 0;
  flex: 1;
}

.price-features li {
  padding: 0.4rem 0;
  font-size: 0.92rem;
  border-bottom: 1px dashed rgba(26,26,26,0.2);
}

.price-features li::before {
  content: '→ ';
  font-weight: 700;
}

.pricing-content-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: flex;
  gap: 2.5rem;
}

.pricing-aside-body {
  flex: 0 0 200px;
}

.pricing-prose {
  flex: 1;
  min-width: 0;
}

/* ===== FAQ 页 ===== */
.main-faq { padding-top: 0; }

.faq-header {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 2rem 2rem;
  display: flex;
  gap: 2.5rem;
  border-bottom: 2px solid var(--ink);
}

.faq-aside {
  flex: 0 0 200px;
  position: sticky;
  top: 2rem;
  height: fit-content;
}

.faq-intro { flex: 1; }

.faq-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mid);
  margin-bottom: 0.5rem;
}

.faq-h1 { margin-bottom: 0.75rem; }

.faq-desc {
  font-size: 1.05rem;
  color: var(--mid);
  max-width: 60ch;
}

.faq-body {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: flex;
  gap: 2.5rem;
}

.faq-figure {
  flex: 0 0 220px;
  align-self: flex-start;
  position: sticky;
  top: 2rem;
}

.faq-count-badge { margin-bottom: 1rem; }

.faq-figure-text {
  font-size: 0.88rem;
  color: var(--mid);
  line-height: 1.6;
}

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

.faq-prose .prose { max-width: none; }

/* ===== About 页 ===== */
.main-about { padding-top: 0; }

.about-hero {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 2rem 2rem;
  display: flex;
  gap: 2.5rem;
  border-bottom: 2px solid var(--ink);
}

.about-aside {
  flex: 0 0 200px;
  position: sticky;
  top: 2rem;
  height: fit-content;
}

.about-intro { flex: 1; }

.about-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mid);
  margin-bottom: 0.5rem;
}

.about-h1 { margin-bottom: 0.75rem; }

.about-desc {
  font-size: 1.05rem;
  color: var(--mid);
  max-width: 60ch;
}

.about-body {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: flex;
  gap: 2.5rem;
}

.about-figure {
  flex: 0 0 280px;
  align-self: flex-start;
  position: sticky;
  top: 2rem;
}

.about-quote {
  font-style: normal;
  border-left: 3px solid var(--ink);
  padding-left: 1rem;
}

.about-quote p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--mid);
}

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

/* ===== Contact 页 ===== */
.main-contact { padding-top: 0; }

.contact-header {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 2rem 2rem;
  display: flex;
  gap: 2.5rem;
  border-bottom: 2px solid var(--ink);
}

.contact-aside {
  flex: 0 0 200px;
  position: sticky;
  top: 2rem;
  height: fit-content;
}

.contact-intro { flex: 1; }

.contact-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mid);
  margin-bottom: 0.5rem;
}

.contact-h1 { margin-bottom: 0.75rem; }

.contact-desc {
  font-size: 1.05rem;
  color: var(--mid);
  max-width: 60ch;
}

.contact-body {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: flex;
  gap: 2.5rem;
}

.contact-figure {
  flex: 0 0 260px;
  align-self: flex-start;
  position: sticky;
  top: 2rem;
}

.contact-note-title {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mid);
  margin-bottom: 0.75rem;
}

.contact-note ul {
  list-style: none;
  padding: 0;
}

.contact-note ul li {
  font-size: 0.88rem;
  padding: 0.4rem 0;
  border-bottom: 1px dashed rgba(26,26,26,0.2);
  color: var(--mid);
}

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

/* ===== Privacy 页 ===== */
.main-privacy { padding-top: 0; }

.privacy-header {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 2rem 2rem;
  display: flex;
  gap: 2.5rem;
  border-bottom: 2px solid var(--ink);
}

.privacy-aside {
  flex: 0 0 200px;
  position: sticky;
  top: 2rem;
  height: fit-content;
}

.privacy-intro { flex: 1; }

.privacy-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mid);
  margin-bottom: 0.5rem;
}

.privacy-h1 { margin-bottom: 0.75rem; }

.privacy-desc {
  font-size: 1.05rem;
  color: var(--mid);
  max-width: 60ch;
}

.privacy-body {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: flex;
  gap: 2.5rem;
}

.privacy-figure {
  flex: 0 0 260px;
  align-self: flex-start;
  position: sticky;
  top: 2rem;
}

.privacy-notice {
  font-size: 0.9rem;
  color: var(--mid);
  line-height: 1.7;
}

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

/* ===== Default 页 ===== */
.main-default { padding-top: 0; }

.default-layout {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 2rem;
  display: flex;
  gap: 2.5rem;
}

.default-aside {
  flex: 0 0 200px;
  position: sticky;
  top: 2rem;
  height: fit-content;
}

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

/* ===== Scroll Reveal 动效 ===== */
@media (prefers-reduced-motion: no-preference) {
  .card,
  .glass-card,
  .sketch-frame,
  .feature-main-col,
  .pricing-intro,
  .faq-intro,
  .about-intro,
  .contact-intro,
  .privacy-intro {
    opacity: 0;
    transform: translateY(24px) rotate(0.3deg);
    transition: opacity 0.45s ease, transform 0.45s ease;
  }

  .card.revealed,
  .glass-card.revealed,
  .sketch-frame.revealed,
  .feature-main-col.revealed,
  .pricing-intro.revealed,
  .faq-intro.revealed,
  .about-intro.revealed,
  .contact-intro.revealed,
  .privacy-intro.revealed {
    opacity: 1;
    transform: translateY(0) rotate(0deg);
  }

  .cards-grid .card:nth-child(2) { transition-delay: 0.08s; }
  .cards-grid .card:nth-child(3) { transition-delay: 0.16s; }
  .cards-grid .card:nth-child(4) { transition-delay: 0.24s; }
  .cards-grid .card:nth-child(5) { transition-delay: 0.32s; }
  .cards-grid .card:nth-child(6) { transition-delay: 0.40s; }
}

/* ===== 移动端 ===== */
@media (max-width: 767px) {
  :root { --nav-h: 60px; }

  .hero-section {
    flex-direction: column-reverse;
    min-height: 100svh;
    padding: 1.5rem 1rem 4rem;
    gap: 1.5rem;
  }

  .hero-aside {
    flex: none;
    width: 100%;
    padding-right: 0;
    align-items: flex-start;
  }

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

  .hero-img-wrap {
    min-height: 220px;
  }

  .hero-placeholder { min-height: 220px; }

  .tag-1 { top: 5%; right: 2%; }
  .tag-2 { bottom: 5%; left: 2%; }

  .content-section,
  .feature-hero,
  .feature-body-section,
  .pricing-header,
  .pricing-content-section,
  .faq-header,
  .faq-body,
  .about-hero,
  .about-body,
  .contact-header,
  .contact-body,
  .privacy-header,
  .privacy-body,
  .default-layout {
    flex-direction: column;
    gap: 1.5rem;
    padding: 1.5rem 1rem;
  }

  .content-aside,
  .feature-aside-left,
  .feature-aside-body,
  .pricing-aside,
  .pricing-aside-body,
  .faq-aside,
  .faq-figure,
  .about-aside,
  .about-figure,
  .contact-aside,
  .contact-figure,
  .privacy-aside,
  .privacy-figure,
  .default-aside {
    flex: none;
    width: 100%;
    position: static;
  }

  .pricing-cards { flex-direction: column; }

  .nav-menu {
    min-width: 90vw;
    right: 0;
    left: auto;
  }

  .features-section,
  .nav-section {
    padding: 1.5rem 1rem;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .footer-brand {
    font-size: clamp(2rem, 12vw, 4rem);
  }

  .site-footer {
    padding: 2rem 1rem 4.5rem;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .hero-section { padding: 2rem 1.5rem 5rem; }

  .hero-aside { flex: 0 0 48%; }
  .hero-figure { flex: 0 0 48%; }

  .content-section,
  .feature-hero,
  .feature-body-section,
  .pricing-header,
  .pricing-content-section,
  .faq-header,
  .faq-body,
  .about-hero,
  .about-body,
  .contact-header,
  .contact-body,
  .privacy-header,
  .privacy-body {
    padding: 2rem 1.5rem;
  }
}