/* ==========================================================================
   一元机场 (1yuanjichang.lol) - 官方网站样式表
   框架风格：极简留白式（高级简约 · 巨字首屏 · 横线式品牌介绍 · 细线滚动出现）
   ========================================================================== */

:root {
  --primary: #00965e;
  --primary-hover: #007d4e;
  --primary-light: #e6f7f0;
  --primary-tint: #f0fdf4;
  --text-main: #0a0d12;
  --text-muted: #525f7f;
  --text-light: #8898aa;
  --bg-page: #fbfcfd;
  --bg-card: #ffffff;
  --border-subtle: #e9ecef;
  --border-dark: #1e293b;
  --radius-pill: 9999px;
  --radius-card: 20px;
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --container-width: 1080px;
}

/* 基础重置与网格底纹背景 (图一经典工程方格纸微纹理) */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text-main);
  background-color: var(--bg-page);
  /* 极简方格纹理 (Grid Background) */
  background-image: 
    linear-gradient(rgba(0, 0, 0, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  background-attachment: fixed;
  line-height: 1.65;
  overflow-x: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all var(--transition-smooth);
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   1. 顶部悬浮药丸胶囊导航 (Floating Pill Nav - 复刻图一)
   ========================================================================== */
.header-wrapper {
  position: sticky;
  top: 18px;
  z-index: 1000;
  width: 100%;
  padding: 0 16px;
  pointer-events: none;
}

.floating-nav {
  pointer-events: auto;
  max-width: 880px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-pill);
  padding: 8px 10px 8px 22px;
  box-shadow: 0 6px 26px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-smooth);
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo-img {
  height: 38px;
  width: auto;
}

.nav-links,
.nav-menu {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none !important;
  margin: 0;
  padding: 0;
}

.nav-link-item,
.nav-item {
  list-style: none !important;
  display: inline-flex;
}

.nav-link-item a,
.nav-item a {
  font-size: 14.5px;
  font-weight: 500;
  color: #4b5563;
  transition: color var(--transition-smooth);
  padding: 6px 2px;
  text-decoration: none;
}

.nav-link-item a:hover,
.nav-item a:hover {
  color: var(--primary);
}

/* 极简绿色胶囊按钮 (对齐图一 Book a demo) */
.btn-pill-green {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #ffffff !important;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 150, 94, 0.25);
  transition: all var(--transition-smooth);
  white-space: nowrap;
}

.btn-pill-green:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 150, 94, 0.35);
}

.btn-pill-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #ffffff;
  color: #111827 !important;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid #d1d5db;
  cursor: pointer;
  transition: all var(--transition-smooth);
  white-space: nowrap;
}

.btn-pill-outline:hover {
  border-color: #111827;
  transform: translateY(-1px);
}

/* 移动端汉堡切换按钮 */
.menu-toggle-btn {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 28px;
  height: 28px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 2px;
}

.menu-toggle-btn span {
  width: 100%;
  height: 2px;
  background: #111827;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ==========================================================================
   2. 巨字首屏 (Huge Typography Hero - 模式完全复刻图一)
   ========================================================================== */
.hero-minimal {
  padding: 90px 0 80px;
  text-align: center;
  position: relative;
}

.hero-huge-title {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Playfair Display", sans-serif;
  font-size: 58px;
  font-weight: 800;
  line-height: 1.25;
  color: #0b0f19;
  letter-spacing: -0.5px;
  margin-bottom: 24px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

.hero-huge-title .title-divider {
  color: #cbd5e1;
  font-weight: 300;
  margin: 0 8px;
  display: inline-block;
}

.hero-huge-title .title-accent {
  font-style: normal;
  font-weight: 800;
  color: var(--primary);
  background: linear-gradient(135deg, #00b370 0%, #008754 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-minimal-sub {
  font-size: 19px;
  color: #4b5563;
  line-height: 1.6;
  max-width: 680px;
  margin: 0 auto 36px;
  font-weight: 400;
}

.hero-minimal-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
}

.hero-minimal-actions .btn-pill-green {
  padding: 14px 38px;
  font-size: 16px;
}

/* 图一底部的极简合作/生态徽标栏 (Loved by...) */
.hero-ecosystem-bar {
  margin-top: 50px;
}

.ecosystem-label {
  font-size: 13px;
  font-weight: 600;
  color: #6b7280;
  margin-bottom: 22px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.ecosystem-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
}

.eco-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: #1f2937;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

.eco-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
}

/* ==========================================================================
   3. 横线式品牌介绍 (Horizontal Lines & Minimal Statements)
   大量留白、细线随滚动出现
   ========================================================================== */
.statement-section {
  padding: 100px 0 110px;
  position: relative;
}

/* 随滚动展开的细线 */
.scroll-divider-line {
  width: 100%;
  height: 1px;
  background: rgba(0, 0, 0, 0.12);
  margin: 0 auto;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-divider-line.active {
  transform: scaleX(1);
}

.statement-row {
  display: grid;
  grid-template-columns: 280px 1fr;
  align-items: baseline;
  gap: 40px;
  padding: 44px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  opacity: 0.25;
  transform: translateY(16px);
  transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.statement-row.active {
  opacity: 1;
  transform: translateY(0);
}

.statement-idx {
  font-family: -apple-system, BlinkMacSystemFont, "Playfair Display", serif;
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 12px;
}

.statement-idx span {
  font-size: 14px;
  font-family: sans-serif;
  font-weight: 700;
  color: #9ca3af;
  letter-spacing: 1.5px;
}

.statement-body h3 {
  font-size: 24px;
  font-weight: 700;
  color: #0b0f19;
  margin-bottom: 12px;
  line-height: 1.35;
}

.statement-body p {
  font-size: 15.5px;
  color: #4b5563;
  line-height: 1.75;
  max-width: 680px;
}

/* ==========================================================================
   4. 价格表 (Pricing Table - 极简白底高质感卡片)
   ========================================================================== */
.pricing-section-clean {
  padding: 100px 0;
  position: relative;
}

.clean-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}

.clean-tag {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.clean-title {
  font-size: 38px;
  font-weight: 800;
  color: #0b0f19;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.clean-desc {
  font-size: 16.5px;
  color: #6b7280;
  line-height: 1.6;
}

/* 计费周期切换控件 */
.pricing-switcher-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 48px;
}

.clean-tabs {
  display: inline-flex;
  background: #f1f3f5;
  padding: 4px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.clean-tab-btn {
  border: none;
  background: transparent;
  padding: 9px 24px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: #4b5563;
  cursor: pointer;
  transition: all var(--transition-smooth);
}

.clean-tab-btn.active {
  background: #ffffff;
  color: #0b0f19;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* 三档卡片网格 */
.pricing-grid-clean {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.plan-card-clean {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 24px;
  padding: 40px 32px 34px;
  display: flex;
  flex-direction: column;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
  position: relative;
}

.plan-card-clean:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 150, 94, 0.4);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
}

/* 最受欢迎卡片突出 */
.plan-card-clean.featured-clean {
  border: 2px solid var(--primary);
  box-shadow: 0 12px 35px rgba(0, 150, 94, 0.12);
  transform: translateY(-4px);
}

.plan-card-clean.featured-clean:hover {
  transform: translateY(-10px);
  box-shadow: 0 24px 50px rgba(0, 150, 94, 0.18);
}

.clean-badge-top {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #ffffff;
  font-size: 12.5px;
  font-weight: 700;
  padding: 4px 20px;
  border-radius: var(--radius-pill);
  letter-spacing: 1px;
}

.card-clean-head {
  text-align: center;
  margin-bottom: 20px;
}

.card-clean-title {
  font-size: 21px;
  font-weight: 800;
  color: #0b0f19;
  margin-bottom: 16px;
}

.card-clean-price-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 12px;
}

.clean-currency {
  font-size: 22px;
  font-weight: 800;
  margin-right: 2px;
}

.clean-price-val {
  font-size: 46px;
  font-weight: 800;
  line-height: 1;
}

.clean-period {
  font-size: 14.5px;
  font-weight: 500;
  color: #6b7280;
  margin-left: 4px;
}

.card-clean-desc {
  font-size: 13.5px;
  color: #6b7280;
  line-height: 1.5;
  min-height: 42px;
}

.clean-feature-list {
  list-style: none;
  margin: 16px 0 32px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.clean-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: #374151;
}

.clean-check-icon {
  width: 17px;
  height: 17px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 3px;
}

.card-clean-btn {
  width: 100%;
  padding: 13px 20px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  text-align: center;
  display: block;
  cursor: pointer;
  transition: all var(--transition-smooth);
}

.card-clean-btn.btn-normal {
  background: #f8fafc;
  color: #0b0f19;
  border: 1px solid #d1d5db;
}

.card-clean-btn.btn-normal:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-tint);
}

.card-clean-btn.btn-accent {
  background: var(--primary);
  color: #ffffff !important;
  border: 1px solid var(--primary);
  box-shadow: 0 4px 14px rgba(0, 150, 94, 0.3);
}

.card-clean-btn.btn-accent:hover {
  background: var(--primary-hover);
  box-shadow: 0 6px 20px rgba(0, 150, 94, 0.4);
}

/* ==========================================================================
   5. 教程正文与知识文章专区 (Tutorials & Knowledge - 线条目录排版)
   ========================================================================== */
.tutorials-section-clean {
  padding: 100px 0;
  position: relative;
}

.tutorial-list-clean {
  display: flex;
  flex-direction: column;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  margin-top: 30px;
}

.tutorial-item-clean {
  display: grid;
  grid-template-columns: 80px 1fr 140px;
  align-items: center;
  padding: 24px 16px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  transition: all 0.25s ease;
  text-decoration: none;
}

.tutorial-item-clean:hover {
  background: rgba(255, 255, 255, 0.8);
  padding-left: 24px;
}

.tutorial-item-clean:hover .tut-arrow {
  transform: translateX(6px);
  color: var(--primary);
}

.tut-num {
  font-family: -apple-system, BlinkMacSystemFont, "Playfair Display", serif;
  font-size: 20px;
  font-weight: 800;
  color: #9ca3af;
}

.tut-main h4 {
  font-size: 17px;
  font-weight: 700;
  color: #0b0f19;
  margin-bottom: 4px;
}

.tut-main p {
  font-size: 13.5px;
  color: #6b7280;
  line-height: 1.5;
}

.tut-arrow {
  text-align: right;
  font-size: 18px;
  font-weight: 700;
  color: #9ca3af;
  transition: all 0.25s ease;
}

/* ==========================================================================
   6. 口碑评价与 FAQ 系统
   ========================================================================== */
.reviews-section {
  padding: 100px 0;
  background: #090e17;
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.reviews-container {
  max-width: 1080px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.reviews-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}

.reviews-title {
  font-size: 34px;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.35;
  margin-bottom: 14px;
}

.reviews-title .highlight-cyan {
  color: #00d680;
}

.reviews-subtitle {
  font-size: 15.5px;
  color: #94a3b8;
  line-height: 1.6;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.review-card {
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 28px 24px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s ease;
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 150, 94, 0.4);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.3);
}

.review-stars {
  color: #f59e0b;
  font-size: 16px;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.review-quote {
  font-size: 14px;
  color: #cbd5e1;
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 14px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  flex-shrink: 0;
}

.avatar-blue { background: linear-gradient(135deg, #2563eb, #1d4ed8); }
.avatar-teal { background: linear-gradient(135deg, #0d9488, #0f766e); }
.avatar-indigo { background: linear-gradient(135deg, #4f46e5, #4338ca); }
.avatar-cyan { background: linear-gradient(135deg, #0284c7, #0369a1); }
.avatar-emerald { background: linear-gradient(135deg, #059669, #047857); }
.avatar-purple { background: linear-gradient(135deg, #7c3aed, #6d28d9); }

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
}

.author-meta {
  font-size: 11.5px;
  color: #94a3b8;
}

.author-meta .tier-badge {
  color: #10b981;
  font-weight: 600;
}

/* FAQ 手风琴 */
.faq-section {
  padding: 100px 0;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.2s ease;
}

.faq-item.active {
  border-color: rgba(0, 150, 94, 0.35);
  box-shadow: 0 4px 14px rgba(0, 150, 94, 0.06);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 700;
  color: #0b0f19;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  gap: 16px;
}

.faq-chevron {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: #9ca3af;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  padding: 0 22px;
}

.faq-answer-inner {
  padding-bottom: 20px;
  font-size: 14.5px;
  color: #4b5563;
  line-height: 1.7;
  border-top: 1px solid #f1f3f5;
  padding-top: 12px;
}

/* CTA 行动横幅 */
.cta-banner-clean {
  padding: 80px 0;
  background: #ffffff;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  text-align: center;
}

.cta-banner-clean h2 {
  font-size: 36px;
  font-weight: 800;
  color: #0b0f19;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.cta-banner-clean p {
  font-size: 16px;
  color: #6b7280;
  max-width: 600px;
  margin: 0 auto 30px;
}

/* 语义化页脚 */
.site-footer {
  background: #0b0f19;
  color: #94a3b8;
  padding: 70px 0 30px;
  font-size: 13.5px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  margin-top: 14px;
  line-height: 1.6;
  max-width: 300px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 14.5px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a:hover {
  color: #10b981;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

/* ==========================================================================
   文章详情页排版
   ========================================================================== */
.article-page {
  padding: 40px 0 80px;
}

.breadcrumb-nav {
  margin-bottom: 22px;
  font-size: 13px;
  color: #6b7280;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 36px;
  align-items: start;
}

.article-main {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.02);
}

.article-header {
  border-bottom: 1px solid #f1f3f5;
  padding-bottom: 22px;
  margin-bottom: 26px;
}

.article-tag {
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  display: inline-block;
  margin-bottom: 12px;
}

.article-header h1 {
  font-size: 28px;
  font-weight: 800;
  color: #0b0f19;
  line-height: 1.35;
  margin-bottom: 14px;
}

.article-meta-bar {
  display: flex;
  gap: 16px;
  font-size: 12.5px;
  color: #6b7280;
  flex-wrap: wrap;
}

.article-body {
  font-size: 15.5px;
  line-height: 1.8;
  color: #374151;
}

.article-body h2 {
  font-size: 21px;
  font-weight: 800;
  color: #0b0f19;
  margin: 34px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e5e7eb;
}

.article-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: #111827;
  margin: 22px 0 10px;
}

.article-body p {
  margin-bottom: 16px;
}

.article-body ul, .article-body ol {
  margin: 0 0 18px 22px;
}

.article-body li {
  margin-bottom: 6px;
}

.article-callout {
  background: var(--primary-tint);
  border-left: 3px solid var(--primary);
  padding: 14px 18px;
  border-radius: 0 8px 8px 0;
  margin: 22px 0;
  font-size: 14px;
  color: #065f46;
}

.article-sidebar {
  position: sticky;
  top: 90px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sidebar-widget {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 14px;
  padding: 20px;
}

.sidebar-widget h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 12px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
}

.toc-list a {
  color: #6b7280;
}

.toc-list a:hover {
  color: var(--primary);
}

/* ==========================================================================
   响应式断点适配 (320px - 1440px)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-huge-title {
    font-size: 46px;
  }
  .pricing-grid-clean {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .menu-toggle-btn {
    display: flex;
  }
  .nav-links {
    position: fixed;
    top: 72px;
    left: 16px;
    right: 16px;
    background: #ffffff;
    flex-direction: column;
    padding: 24px;
    border-radius: 20px;
    border: 1px solid rgba(0,0,0,0.08);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .hero-huge-title {
    font-size: 34px;
    letter-spacing: -0.5px;
  }
  .hero-minimal-sub {
    font-size: 16px;
  }
  .statement-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .tutorial-item-clean {
    grid-template-columns: 40px 1fr;
  }
  .tut-arrow {
    display: none;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-huge-title {
    font-size: 28px;
  }
  .floating-nav {
    padding: 6px 8px 6px 16px;
  }
}

/* 减弱动效适配 */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .scroll-divider-line {
    transform: none !important;
  }
  .statement-row {
    opacity: 1 !important;
    transform: none !important;
  }
}