/* ==========================================================================
   SHANLIAN (闪连) - Swiss Signal Design System
   Swiss Graphic Design + Apple Minimalism + Editorial Typography
   ========================================================================== */

:root {
  --background: #F7F6F2;
  --surface: #FFFFFF;
  --surface-muted: #EEEFEA;
  --surface-elevated: #FAF9F5;
  --ink: #171B20;
  --ink-secondary: #616971;
  --ink-tertiary: #8C949D;
  --accent: #F06445;
  --accent-dark: #CF492D;
  --accent-light: #FDEEEA;
  --line: #DADDD8;
  --line-strong: #B4B9B1;
  --success: #2F765B;
  --success-light: #EBF4F0;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", Courier, monospace;
  --font-serif: "Songti SC", "SimSun", "STSong", "Noto Serif CJK SC", Georgia, serif;

  --container-max: 1280px;
  --container-narrow: 880px;
  --header-height: 72px;

  --ease-editorial: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Reset & Core Typography */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  background-color: var(--background);
  color: var(--ink);
  font-family: var(--font-sans);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--background);
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Grid & Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(20px, 4vw, 48px);
  padding-right: clamp(20px, 4vw, 48px);
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(20px, 4vw, 32px);
  padding-right: clamp(20px, 4vw, 32px);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(16px, 2.5vw, 32px);
}

.section {
  padding-top: clamp(64px, 8vw, 120px);
  padding-bottom: clamp(64px, 8vw, 120px);
  position: relative;
}

.section-border-top {
  border-top: 1px solid var(--line);
}

.section-border-bottom {
  border-bottom: 1px solid var(--line);
}

/* Swiss Editorial Micro Labels */
.editorial-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-weight: 600;
}

.editorial-num::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--accent);
  border-radius: 50%;
}

.section-header {
  margin-bottom: clamp(40px, 5vw, 64px);
}

.section-title {
  font-size: clamp(32px, 4.2vw, 52px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--ink);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: clamp(16px, 1.4vw, 20px);
  color: var(--ink-secondary);
  max-width: 680px;
  line-height: 1.6;
}

/* Primary Editorial Buttons & Links */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--ink);
  color: var(--surface);
  border: 1px solid var(--ink);
}

.btn-primary:hover {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--surface);
  transform: translateY(-1px);
}

.btn-outline-accent {
  background-color: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn-outline-accent:hover {
  background-color: var(--accent);
  color: var(--surface);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-secondary:hover {
  border-color: var(--ink);
  background-color: var(--surface-muted);
}

.link-anchor {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--ink-secondary);
  font-weight: 500;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.link-anchor:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(247, 246, 242, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.brand-text-wrap {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.1;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--ink-secondary);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(16px, 1.8vw, 28px);
  list-style: none;
}

.nav-item a {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-secondary);
  position: relative;
  padding: 8px 0;
}

.nav-item a:hover,
.nav-item a.active {
  color: var(--ink);
}

.nav-item a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width var(--transition-base);
}

.nav-item a:hover::after,
.nav-item a.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-btn {
  padding: 10px 20px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--ink);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Hero: Editorial Brand Statement + Network Atlas
   ========================================================================== */
.hero-section {
  padding-top: clamp(48px, 6vw, 96px);
  padding-bottom: clamp(48px, 6vw, 80px);
  background-color: var(--background);
  border-bottom: 1px solid var(--line);
}

.hero-statement-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: flex-end;
  margin-bottom: clamp(48px, 6vw, 80px);
}

.hero-headline {
  font-size: clamp(44px, 6.5vw, 84px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.08;
  color: var(--ink);
}

.hero-headline .accent-word {
  color: var(--accent);
}

.hero-editorial-wrap {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-bottom: 8px;
}

.hero-desc {
  font-size: clamp(16px, 1.25vw, 19px);
  line-height: 1.7;
  color: var(--ink-secondary);
  border-left: 2px solid var(--line);
  padding-left: 20px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

/* Network Atlas Visual */
.network-atlas-wrapper {
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: clamp(20px, 3vw, 40px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}

.atlas-meta-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
  margin-bottom: 24px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.atlas-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--success);
  font-weight: 600;
}

.atlas-status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  animation: pulse-dot 2.4s infinite ease-in-out;
}

@keyframes pulse-dot {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.atlas-canvas-box {
  width: 100%;
  height: auto;
  min-height: 260px;
  position: relative;
}

.atlas-canvas-box svg {
  width: 100%;
  height: auto;
}

.atlas-caption-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-secondary);
  letter-spacing: 0.06em;
}

.atlas-caption-disclaimer {
  color: var(--ink-tertiary);
  font-size: 12px;
  font-family: var(--font-sans);
}

/* ==========================================================================
   Section 2: Quick Choice Area (3 Horizontal Editorial Rows)
   ========================================================================== */
.choice-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.choice-item {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  align-items: center;
  padding: clamp(28px, 4vw, 44px) 0;
  border-bottom: 1px solid var(--line);
  transition: background-color var(--transition-fast), padding-left var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  gap: 24px;
}

.choice-item:hover {
  background-color: var(--surface);
  padding-left: 16px;
  padding-right: 16px;
}

.choice-num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 300;
  color: var(--ink-secondary);
  letter-spacing: -0.03em;
  transition: color var(--transition-fast);
}

.choice-item:hover .choice-num {
  color: var(--accent);
}

.choice-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.choice-title {
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.choice-desc {
  font-size: 15px;
  color: var(--ink-secondary);
  max-width: 640px;
  line-height: 1.6;
}

.choice-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.choice-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  background-color: var(--surface-muted);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink-secondary);
}

.choice-arrow {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.choice-arrow svg {
  width: 18px;
  height: 18px;
  stroke: var(--ink);
  transition: stroke var(--transition-fast), transform var(--transition-fast);
}

.choice-item:hover .choice-arrow {
  background-color: var(--ink);
  border-color: var(--ink);
}

.choice-item:hover .choice-arrow svg {
  stroke: var(--surface);
  transform: translateX(3px);
}

/* ==========================================================================
   Section 3: Brand Capabilities Bento Grid
   ========================================================================== */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(16px, 2.5vw, 28px);
}

.bento-card {
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: clamp(28px, 3.5vw, 40px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.bento-card:hover {
  border-color: var(--ink);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.03);
}

.bento-wide {
  grid-column: span 12;
}

.bento-half {
  grid-column: span 6;
}

.bento-header {
  margin-bottom: 24px;
}

.bento-title {
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: var(--ink);
}

.bento-desc {
  font-size: 15px;
  color: var(--ink-secondary);
  line-height: 1.65;
  max-width: 620px;
}

.bento-wide-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.route-diag-box {
  background-color: var(--surface-muted);
  border: 1px solid var(--line);
  padding: 24px;
  border-radius: var(--radius-sm);
}

.diag-flow-step {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background-color: var(--surface);
  border: 1px solid var(--line);
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.diag-flow-step:last-child {
  margin-bottom: 0;
}

.diag-flow-step .highlight {
  color: var(--accent);
  font-weight: 600;
}

/* Region nodes list inside Bento */
.regions-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.region-pill {
  padding: 14px 16px;
  border: 1px solid var(--line);
  background-color: var(--surface-elevated);
  border-radius: var(--radius-sm);
}

.region-pill-code {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-secondary);
}

.region-pill-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-top: 4px;
}

.region-pill-tag {
  font-size: 11px;
  color: var(--success);
  margin-top: 4px;
  display: block;
}

/* Device OS Matrix */
.devices-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.device-box {
  border: 1px solid var(--line);
  padding: 16px;
  text-align: center;
  background-color: var(--surface-elevated);
  border-radius: var(--radius-sm);
}

.device-box svg {
  margin: 0 auto 12px auto;
  stroke: var(--ink);
}

.device-box-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.device-box-meta {
  font-size: 11px;
  color: var(--ink-secondary);
  margin-top: 4px;
}

/* ==========================================================================
   Section 4: Global Node Network Route Directory
   ========================================================================== */
.directory-layout {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.directory-map-panel {
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.directory-table-panel {
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.route-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.route-table th {
  background-color: var(--surface-muted);
  padding: 14px 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  border-bottom: 1px solid var(--line);
  font-weight: 600;
}

.route-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink);
  vertical-align: middle;
  transition: background-color var(--transition-fast);
}

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

.route-table tr {
  cursor: pointer;
}

.route-table tr:hover td,
.route-table tr.selected td {
  background-color: var(--surface-muted);
}

.route-table tr.selected td:first-child {
  border-left: 3px solid var(--accent);
}

.badge-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background-color: var(--surface-muted);
  border: 1px solid var(--line);
  color: var(--ink-secondary);
}

.badge-status-online {
  color: var(--success);
  background-color: var(--success-light);
  border-color: rgba(47, 118, 91, 0.2);
  font-weight: 600;
}

/* ==========================================================================
   Section 5: Brand Data / Spec Wall (2 Rows x 3 Cols)
   ========================================================================== */
.numbers-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background-color: var(--surface);
}

.numbers-cell {
  padding: clamp(24px, 3.5vw, 40px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 180px;
}

.numbers-cell-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  font-weight: 600;
}

.numbers-cell-val {
  font-size: clamp(32px, 3.5vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.1;
  margin: 16px 0 8px 0;
}

.numbers-cell-desc {
  font-size: 14px;
  color: var(--ink-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   Section 6: AI & Streaming Scenarios
   ========================================================================== */
.scenario-block {
  margin-bottom: clamp(48px, 6vw, 80px);
}

.scenario-block:last-child {
  margin-bottom: 0;
}

.scenario-header-split {
  display: grid;
  grid-template-columns: 2fr 8fr;
  gap: 32px;
  align-items: baseline;
  border-bottom: 1px solid var(--line);
  padding-bottom: 24px;
  margin-bottom: 32px;
}

.scenario-code {
  font-family: var(--font-mono);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 300;
  color: var(--accent);
}

.ai-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.ai-card {
  background-color: var(--surface);
  border: 1px solid var(--line);
  padding: 24px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.ai-card-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.ai-card-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.ai-card-scenario {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.ai-card-desc {
  font-size: 13px;
  color: var(--ink-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.ai-card-alert {
  background-color: var(--surface-muted);
  border-left: 2px solid var(--line-strong);
  padding: 10px 12px;
  font-size: 12px;
  color: var(--ink-secondary);
  line-height: 1.5;
}

/* Streaming Wide Cards */
.streaming-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.stream-card {
  background-color: var(--surface);
  border: 1px solid var(--line);
  padding: 20px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stream-card-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}

.stream-card-meta {
  font-size: 12px;
  color: var(--ink-secondary);
  line-height: 1.5;
  margin-bottom: 12px;
}

.stream-card-spec {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  border-top: 1px solid var(--line);
  padding-top: 8px;
  font-weight: 600;
}

/* ==========================================================================
   Section 7: Editorial Pricing Comparison Table
   ========================================================================== */
.pricing-table-wrap {
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: 24px;
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.pricing-table th {
  background-color: var(--surface-muted);
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  border-bottom: 1px solid var(--line);
}

.pricing-table td {
  padding: 24px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  vertical-align: middle;
}

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

.pricing-table tr.highlight-row {
  background-color: #FFF9F6;
}

.pricing-table tr.highlight-row td:first-child {
  border-left: 4px solid var(--accent);
}

.tier-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tier-badge {
  font-family: var(--font-sans);
  font-size: 11px;
  padding: 2px 8px;
  background-color: var(--accent);
  color: var(--surface);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.tier-traffic {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.tier-price {
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
}

.tier-cycle {
  font-size: 12px;
  color: var(--ink-secondary);
}

.pricing-disclaimer {
  font-size: 13px;
  color: var(--ink-secondary);
  text-align: center;
  line-height: 1.6;
}

/* Mobile Pricing Cards (Hidden on desktop) */
.mobile-pricing-list {
  display: none;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.mobile-price-card {
  background-color: var(--surface);
  border: 1px solid var(--line);
  padding: 24px;
  border-radius: var(--radius-sm);
}

.mobile-price-card.featured {
  border-left: 4px solid var(--accent);
  background-color: #FFF9F6;
}

/* ==========================================================================
   Section 8: Editorial SEO Network Journal Preview
   ========================================================================== */
.journal-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(16px, 2.5vw, 28px);
}

.journal-card {
  background-color: var(--surface);
  border: 1px solid var(--line);
  padding: clamp(24px, 3vw, 36px);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.journal-card:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
}

.journal-card-feature {
  grid-column: span 12;
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 32px;
  align-items: center;
  background-color: var(--surface);
}

.journal-card-medium {
  grid-column: span 6;
}

.journal-card-small {
  grid-column: span 4;
}

.journal-meta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-secondary);
  margin-bottom: 12px;
}

.journal-tag {
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
}

.journal-title {
  font-size: clamp(18px, 1.8vw, 24px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.35;
  margin-bottom: 12px;
}

.journal-card-feature .journal-title {
  font-size: clamp(24px, 2.8vw, 36px);
}

.journal-excerpt {
  font-size: 14px;
  color: var(--ink-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.journal-read-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-top: auto;
}

.journal-read-link:hover {
  color: var(--accent);
}

/* ==========================================================================
   Section 9: Editorial Testimonial / Scenario Wall
   ========================================================================== */
.scenario-wall-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(16px, 2.5vw, 24px);
}

.scenario-quote-card {
  background-color: var(--surface);
  border: 1px solid var(--line);
  padding: clamp(24px, 3.5vw, 40px);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.scenario-quote-featured {
  grid-column: span 8;
}

.scenario-quote-regular {
  grid-column: span 4;
}

.scenario-quote-half {
  grid-column: span 6;
}

.quote-symbol {
  font-family: var(--font-serif);
  font-size: 48px;
  line-height: 1;
  color: var(--accent);
  margin-bottom: 12px;
}

.quote-statement {
  font-size: clamp(16px, 1.6vw, 22px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
  margin-bottom: 20px;
}

.quote-user-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 16px;
  font-size: 12px;
  color: var(--ink-secondary);
}

.quote-source-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-secondary);
  background-color: var(--surface-muted);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Section 10: FAQ (Native Details / Summary)
   ========================================================================== */
.faq-layout {
  display: grid;
  grid-template-columns: 4fr 8fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.faq-sticky-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 32px);
}

.faq-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
  transition: background-color var(--transition-fast);
}

.faq-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: clamp(16px, 1.4vw, 19px);
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  gap: 16px;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq-icon::before {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: var(--ink);
}

.faq-item[open] .faq-icon::before {
  content: "—";
}

.faq-answer {
  padding-bottom: 24px;
  color: var(--ink-secondary);
  font-size: 15px;
  line-height: 1.7;
}

.faq-answer p {
  margin-bottom: 12px;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: var(--surface-muted);
  border-top: 1px solid var(--line);
  padding-top: clamp(48px, 6vw, 80px);
  padding-bottom: clamp(40px, 5vw, 64px);
  margin-top: auto;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(32px, 5vw, 64px);
  padding-bottom: clamp(32px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-desc {
  font-size: 14px;
  color: var(--ink-secondary);
  line-height: 1.6;
  max-width: 420px;
}

.footer-nav-col {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.footer-nav-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  font-weight: 700;
  margin-bottom: 16px;
}

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

.footer-links a {
  font-size: 14px;
  color: var(--ink-secondary);
}

.footer-links a:hover {
  color: var(--ink);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-top: 32px;
  font-size: 12px;
  color: var(--ink-secondary);
}

.footer-disclaimer-box {
  background-color: var(--surface);
  border: 1px solid var(--line);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  margin-top: 24px;
  font-size: 12px;
  color: var(--ink-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Editorial Content Layout (For Blog Articles, About, Terms, Privacy)
   ========================================================================== */
.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-secondary);
  margin-bottom: 32px;
}

.breadcrumbs a:hover {
  color: var(--accent);
}

.article-header {
  margin-bottom: clamp(32px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  padding-bottom: 32px;
}

.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-secondary);
  margin-bottom: 16px;
}

.article-h1 {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 20px;
}

.article-summary-box {
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  padding: 20px 24px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  margin-bottom: 32px;
}

.editorial-body {
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink);
}

.editorial-body h2 {
  font-size: clamp(24px, 2.5vw, 32px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: clamp(40px, 5vw, 56px);
  margin-bottom: 16px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
}

.editorial-body h3 {
  font-size: clamp(19px, 2vw, 24px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--ink);
}

.editorial-body p {
  margin-bottom: 20px;
}

.editorial-body ul, .editorial-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.editorial-body li {
  margin-bottom: 8px;
}

.editorial-body blockquote {
  border-left: 3px solid var(--ink);
  padding-left: 20px;
  margin: 28px 0;
  font-style: italic;
  color: var(--ink-secondary);
}

.toc-box {
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 24px;
  margin-bottom: 40px;
}

.toc-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 16px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 0 !important;
}

.toc-list a {
  font-size: 14px;
  color: var(--ink-secondary);
  border-bottom: 1px dashed transparent;
}

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

.article-cta-box {
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 32px;
  margin: 48px 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.article-cta-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}

/* ==========================================================================
   Mobile Fixed Bottom Action Bar (Non-intrusive)
   ========================================================================== */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 99;
  background-color: rgba(247, 246, 242, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--line);
  padding: 12px 20px;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.04);
}

.mobile-sticky-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}

/* ==========================================================================
   Responsive Breakpoints
   Targeting 1024px, 768px, and Mobile 430px / 390px / 375px
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-statement-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .bento-half {
    grid-column: span 12;
  }

  .bento-wide-content {
    grid-template-columns: 1fr;
  }

  .directory-layout {
    grid-template-columns: 1fr;
  }

  .directory-map-panel {
    position: static;
  }

  .numbers-wall {
    grid-template-columns: repeat(2, 1fr);
  }

  .ai-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .streaming-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .journal-card-small {
    grid-column: span 6;
  }

  .scenario-quote-featured,
  .scenario-quote-regular,
  .scenario-quote-half {
    grid-column: span 12;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
  }

  .footer-nav-col {
    grid-template-columns: repeat(2, 1fr);
  }

  .faq-layout {
    grid-template-columns: 1fr;
  }

  .faq-sticky-sidebar {
    position: static;
    margin-bottom: 24px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  body {
    padding-bottom: 64px; /* Space for mobile sticky CTA */
  }

  .mobile-sticky-bar {
    display: block;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 24px;
    gap: 0;
    overflow-y: auto;
    z-index: 1000;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-item {
    width: 100%;
    border-bottom: 1px solid var(--line);
  }

  .nav-item a {
    display: block;
    padding: 16px 0;
    font-size: 17px;
    font-weight: 600;
  }

  .nav-toggle {
    display: flex;
  }

  .header-actions .header-btn {
    display: none;
  }

  /* Editorial choices mobile */
  .choice-item {
    grid-template-columns: 48px 1fr auto;
    gap: 16px;
  }

  .regions-matrix {
    grid-template-columns: repeat(2, 1fr);
  }

  .devices-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .numbers-wall {
    grid-template-columns: 1fr;
  }

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

  .streaming-grid {
    grid-template-columns: 1fr;
  }

  /* Pricing table reflow */
  .pricing-table-wrap {
    display: none;
  }

  .mobile-pricing-list {
    display: flex;
  }

  .journal-card-feature,
  .journal-card-medium,
  .journal-card-small {
    grid-column: span 12;
  }

  .scenario-header-split {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* Mobile Node Directory Table to List */
  .route-table th:nth-child(3),
  .route-table td:nth-child(3) {
    display: none;
  }
}

/* Accessibility & Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}