/* ==========================================================================
   COCODUCK VPN - Streetwear Neo-Brutalist Sticker Design System
   High-Voltage Palette: Hazard Safety Yellow (#ffea00) & Underground Carbon Black (#0a0a0a)
   Holographic Foil Iridescent Accents - Raw Kinetic Attitude - Zero Bloat
   ========================================================================== */

:root {
  /* High-Voltage Palette - Light Mode (Default) */
  --hazard-yellow: #ffea00;
  --hazard-yellow-hover: #ffe000;
  --hazard-yellow-tint: rgba(255, 234, 0, 0.2);
  --carbon-black: #0a0a0a;
  --carbon-dark: #141414;
  --carbon-surface: #ffffff;
  --carbon-elevated: #f4f4f0;
  --bg-primary: #f6f6f2;
  --bg-secondary: #ecece6;
  --bg-card: #ffffff;

  --border-heavy: #0a0a0a;
  --border-width: 3px;
  --shadow-brutal: 6px 6px 0px #0a0a0a;
  --shadow-brutal-lg: 9px 9px 0px #0a0a0a;
  --shadow-brutal-sm: 4px 4px 0px #0a0a0a;
  --shadow-hover: 8px 8px 0px #0a0a0a;

  --text-primary: #0a0a0a;
  --text-secondary: #262626;
  --text-muted: #555555;
  --text-inverse: #ffffff;

  --tape-color-1: #ffea00;
  --tape-color-2: #0a0a0a;

  /* Holographic Foil Gradients */
  --holo-gradient: linear-gradient(135deg, #ff007a 0%, #7928ca 20%, #0070f3 40%, #00dfd8 60%, #ffea00 85%, #ff007a 100%);
  --holo-sheen: linear-gradient(105deg, transparent 20%, rgba(255, 255, 255, 0.7) 45%, rgba(255, 234, 0, 0.8) 55%, transparent 75%);
  --holo-border: linear-gradient(90deg, #ff007a, #00dfd8, #ffea00, #7928ca);

  --header-bg: rgba(246, 246, 242, 0.95);
  --font-display: "Impact", "Arial Black", -apple-system, "PingFang SC", sans-serif;
  --font-mono: "Space Mono", "Courier New", Courier, monospace;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --radius-sticker: 4px;
}

[data-theme="dark"] {
  /* Underground Carbon Black Theme */
  --bg-primary: #0a0a0a;
  --bg-secondary: #121212;
  --bg-card: #141414;
  --carbon-surface: #171717;
  --carbon-elevated: #1f1f1f;

  --border-heavy: #ffea00;
  --shadow-brutal: 6px 6px 0px #ffea00;
  --shadow-brutal-lg: 9px 9px 0px #ffea00;
  --shadow-brutal-sm: 4px 4px 0px #ffea00;
  --shadow-hover: 8px 8px 0px #ffea00;

  --text-primary: #ffffff;
  --text-secondary: #e5e5e5;
  --text-muted: #a3a3a3;
  --text-inverse: #0a0a0a;

  --tape-color-1: #ffea00;
  --tape-color-2: #000000;

  --header-bg: rgba(10, 10, 10, 0.95);
  --holo-sheen: linear-gradient(105deg, transparent 20%, rgba(255, 234, 0, 0.6) 45%, rgba(0, 223, 216, 0.8) 55%, transparent 75%);
}

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

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

/* Offset for fixed header navigation */
section[id], div[id] {
  scroll-margin-top: 90px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.25s ease, color 0.25s ease;
  overflow-x: hidden;
  position: relative;
  background-image: radial-gradient(rgba(0, 0, 0, 0.08) 1px, transparent 0);
  background-size: 24px 24px;
}

[data-theme="dark"] body {
  background-image: radial-gradient(rgba(255, 234, 0, 0.08) 1px, transparent 0);
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Streetwear Hazard Ribbons & Industrial Banners
   ========================================================================== */

.hazard-tape-ribbon {
  width: 100%;
  height: 28px;
  background: repeating-linear-gradient(
    45deg,
    var(--tape-color-1),
    var(--tape-color-1) 16px,
    var(--tape-color-2) 16px,
    var(--tape-color-2) 32px
  );
  border-top: 2px solid var(--border-heavy);
  border-bottom: 2px solid var(--border-heavy);
  position: relative;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.hazard-tape-text-bar {
  background: #ffea00;
  color: #0a0a0a;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 6px 0;
  overflow: hidden;
  white-space: nowrap;
  border-bottom: 3px solid #0a0a0a;
  display: flex;
}

.ticker-track {
  display: flex;
  animation: ticker-slide 20s linear infinite;
  gap: 36px;
}

@keyframes ticker-slide {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ==========================================================================
   Typography & Brutalist Display
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-transform: uppercase;
  color: var(--text-primary);
}

.font-mono {
  font-family: var(--font-mono);
}

/* Stencil & Barcode Tags */
.tag-barcode {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  padding: 4px 10px;
  background: var(--carbon-black);
  color: #ffea00;
  border: 1px solid #ffea00;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

[data-theme="dark"] .tag-barcode {
  background: #ffea00;
  color: #0a0a0a;
  border: 1px solid #0a0a0a;
}

/* ==========================================================================
   Tactile Neo-Brutalist Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 12px 28px;
  border: var(--border-width) solid var(--border-heavy);
  border-radius: var(--radius-sticker);
  cursor: pointer;
  box-shadow: var(--shadow-brutal-sm);
  transition: transform 0.12s cubic-bezier(0, 0, 0.2, 1), box-shadow 0.12s cubic-bezier(0, 0, 0.2, 1), background-color 0.2s ease;
  text-decoration: none;
  position: relative;
  white-space: nowrap;
  user-select: none;
  min-height: 48px;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hover);
}

.btn:active {
  transform: translate(3px, 3px);
  box-shadow: 0px 0px 0px;
}

.btn-hazard {
  background: #ffea00;
  color: #0a0a0a !important;
  font-weight: 900;
}

.btn-hazard:hover {
  background: #ffe000;
}

.btn-dark {
  background: var(--carbon-surface);
  color: var(--text-primary) !important;
}

.btn-dark:hover {
  background: var(--carbon-elevated);
}

.btn-holo {
  background: var(--holo-gradient);
  background-size: 200% 200%;
  animation: holo-gradient-move 4s ease infinite;
  color: #ffffff !important;
  text-shadow: 1px 1px 0px #0a0a0a;
}

@keyframes holo-gradient-move {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.9rem;
  min-height: 40px;
  box-shadow: 3px 3px 0px var(--border-heavy);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.25rem;
  box-shadow: var(--shadow-brutal);
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Header & Streetwear Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: var(--border-width) solid var(--border-heavy);
  z-index: 1000;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

/* Official COCODUCK Logo Badge */
.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-sticker-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  padding: 4px 10px 4px 6px;
  border: var(--border-width) solid var(--border-heavy);
  box-shadow: 3px 3px 0px var(--border-heavy);
  border-radius: var(--radius-sticker);
  transition: transform 0.2s cubic-bezier(0, 0, 0.2, 1), box-shadow 0.2s ease;
}

.logo-area:hover .logo-sticker-pill {
  transform: translate(-2px, -2px) rotate(-1deg);
  box-shadow: 5px 5px 0px var(--border-heavy);
}

.brand-logo-img {
  height: 36px;
  width: auto;
  display: block;
}

.logo-vpn-pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 900;
  background: #ffea00;
  color: #0a0a0a;
  border: 1.5px solid #0a0a0a;
  padding: 1px 5px;
  letter-spacing: 0.08em;
  line-height: 1.2;
}

/* Nav Menu */
.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 20px;
}

.nav-link {
  font-family: var(--font-display);
  font-size: 0.96rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 10px;
  position: relative;
  transition: color 0.15s ease;
  border: 2px solid transparent;
}

.nav-link:hover {
  color: #0a0a0a;
  background: #ffea00;
  border: 2px solid var(--border-heavy);
  box-shadow: 3px 3px 0px var(--border-heavy);
  transform: translateY(-1px);
}

[data-theme="dark"] .nav-link:hover {
  color: #0a0a0a;
  background: #ffea00;
}

/* Special Highlight for '推荐资讯' */
.nav-link-news {
  background: rgba(255, 234, 0, 0.25);
  border: 2px dashed var(--border-heavy);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-link-news::after {
  content: "HOT";
  font-family: var(--font-mono);
  font-size: 0.62rem;
  background: #ff0055;
  color: #ffffff;
  padding: 1px 4px;
  font-weight: 900;
  border-radius: 2px;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* High Precision Streetwear Theme Switcher */
.theme-toggle-btn {
  background: var(--carbon-surface);
  border: var(--border-width) solid var(--border-heavy);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sticker);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
  box-shadow: 3px 3px 0px var(--border-heavy);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.theme-toggle-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 5px 5px 0px var(--border-heavy);
  background: #ffea00;
  color: #0a0a0a;
}

.theme-icon-sun, .theme-icon-moon {
  width: 22px;
  height: 22px;
}

[data-theme="light"] .theme-icon-sun { display: none; }
[data-theme="light"] .theme-icon-moon { display: block; }
[data-theme="dark"] .theme-icon-sun { display: block; color: #ffea00; }
[data-theme="dark"] .theme-icon-moon { display: none; }

.mobile-menu-btn {
  display: none;
  background: var(--carbon-surface);
  border: var(--border-width) solid var(--border-heavy);
  width: 44px;
  height: 44px;
  box-shadow: 3px 3px 0px var(--border-heavy);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

/* ==========================================================================
   Hero Section - Asymmetric Poster Grid & Overlapping Stickers
   ========================================================================== */

.hero-section {
  padding: 70px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-badge-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.streetwear-tag {
  background: #ffea00;
  color: #0a0a0a;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 900;
  padding: 6px 14px;
  border: var(--border-width) solid var(--border-heavy);
  box-shadow: 4px 4px 0px var(--border-heavy);
  transform: rotate(-1.5deg);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.barcode-stamp {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  border: 2px solid var(--border-heavy);
  padding: 4px 10px;
  letter-spacing: 0.15em;
  background: var(--carbon-surface);
}

.hero-main-title {
  font-size: clamp(2.6rem, 5.8vw, 4.8rem);
  font-weight: 900;
  line-height: 1.02;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.brand-highlight {
  background: #ffea00;
  color: #0a0a0a;
  padding: 2px 14px;
  border: var(--border-width) solid var(--border-heavy);
  display: inline-block;
  box-shadow: 6px 6px 0px var(--border-heavy);
  transform: rotate(0.5deg);
  margin-right: 8px;
}

.holo-text {
  background: var(--holo-gradient);
  background-size: 200% 200%;
  animation: holo-gradient-move 5s ease infinite;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  text-shadow: 2px 2px 0px rgba(0, 0, 0, 0.2);
}

.hero-bio {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  max-width: 820px;
  line-height: 1.6;
  margin-bottom: 36px;
  font-weight: 500;
  border-left: 4px solid #ffea00;
  padding-left: 18px;
}

.hero-cta-wrap {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}

/* Trust Ribbons */
.hero-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.trust-badge-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--carbon-surface);
  border: 2px solid var(--border-heavy);
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  box-shadow: 3px 3px 0px var(--border-heavy);
}

.trust-badge-item svg {
  color: #ffea00;
  stroke: var(--border-heavy);
  fill: #ffea00;
}

/* Industrial Mockup Dashboard */
.hero-mockup-board {
  margin-top: 54px;
  background: var(--carbon-surface);
  border: var(--border-width) solid var(--border-heavy);
  box-shadow: var(--shadow-brutal-lg);
  padding: 24px;
  position: relative;
}

.mockup-tape-top {
  position: absolute;
  top: -14px;
  left: 30px;
  background: #ffea00;
  color: #0a0a0a;
  border: 2px solid #0a0a0a;
  padding: 2px 14px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 900;
  box-shadow: 2px 2px 0px #0a0a0a;
  transform: rotate(-1deg);
}

.mockup-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 10px;
}

.stat-cell {
  background: var(--carbon-elevated);
  border: 2px solid var(--border-heavy);
  padding: 16px;
  box-shadow: 3px 3px 0px var(--border-heavy);
}

.stat-cell-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.stat-cell-val {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--text-primary);
  line-height: 1;
}

.stat-cell-val.hazard {
  color: #eab308;
}

[data-theme="dark"] .stat-cell-val.hazard {
  color: #ffea00;
}

/* ==========================================================================
   Holographic Sticker Micro-Interactions & Peel Deformation
   ========================================================================== */

/* Section Wrap */
.section-block {
  padding: 80px 0;
  position: relative;
}

.section-block-alt {
  background: var(--bg-secondary);
  border-top: var(--border-width) solid var(--border-heavy);
  border-bottom: var(--border-width) solid var(--border-heavy);
}

.section-header-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: #ffea00;
  color: #0a0a0a;
  padding: 4px 12px;
  border: 2px solid var(--border-heavy);
  box-shadow: 3px 3px 0px var(--border-heavy);
  display: inline-block;
  margin-bottom: 14px;
  font-weight: 900;
  letter-spacing: 0.08em;
  transform: rotate(-1deg);
}

.section-main-title {
  font-size: clamp(2rem, 3.8vw, 3rem);
  font-weight: 900;
  margin-bottom: 16px;
}

.section-subtext {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 760px;
}

/* 3 Core Advantages Cards (Die-Cut Vinyl Stickers) */
.features-sticker-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 48px;
}

.sticker-card {
  background: var(--carbon-surface);
  border: var(--border-width) solid var(--border-heavy);
  border-radius: var(--radius-sticker);
  padding: 36px 28px;
  box-shadow: var(--shadow-brutal);
  position: relative;
  overflow: hidden;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}

/* Corner Peel Deformation & Holographic Foil Hover Sheen */
.sticker-card::before {
  content: "";
  position: absolute;
  top: -150%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: var(--holo-sheen);
  transform: rotate(35deg);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.6s ease;
  z-index: 2;
}

/* Top-Right 3D Peel Corner Dog-Ear */
.sticker-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 0 0 0;
  border-color: transparent transparent var(--border-heavy) transparent;
  transition: border-width 0.25s ease;
  z-index: 3;
}

.sticker-card:hover {
  transform: translateY(-6px) rotate(-0.5deg);
  box-shadow: var(--shadow-brutal-lg);
}

.sticker-card:hover::before {
  opacity: 1;
  transform: rotate(35deg) translateY(120%);
}

.sticker-card:hover::after {
  border-width: 0 36px 36px 0;
  border-color: transparent var(--hazard-yellow) var(--border-heavy) transparent;
}

.sticker-stamp-icon {
  width: 60px;
  height: 60px;
  background: #ffea00;
  border: var(--border-width) solid var(--border-heavy);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 4px 4px 0px var(--border-heavy);
  margin-bottom: 24px;
  transform: rotate(2deg);
}

.sticker-stamp-icon svg {
  width: 32px;
  height: 32px;
  stroke: #0a0a0a;
}

.sticker-title {
  font-size: 1.45rem;
  margin-bottom: 14px;
}

.sticker-desc {
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--text-secondary);
  flex-grow: 1;
  margin-bottom: 24px;
}

.sticker-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 2px dashed var(--border-heavy);
  padding-top: 16px;
}

.chip-item {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--carbon-elevated);
  border: 1px solid var(--border-heavy);
  padding: 3px 8px;
  text-transform: uppercase;
}

/* ==========================================================================
   Showcase: Streaming & AI Support Cards
   ========================================================================== */

.showcase-two-col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
  margin-top: 48px;
}

.showcase-block-card {
  background: var(--carbon-surface);
  border: var(--border-width) solid var(--border-heavy);
  box-shadow: var(--shadow-brutal);
  padding: 36px 30px;
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.showcase-block-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-brutal-lg);
}

.showcase-top-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.showcase-icon-box {
  width: 54px;
  height: 54px;
  background: #0a0a0a;
  border: 2px solid var(--border-heavy);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffea00;
  box-shadow: 3px 3px 0px var(--border-heavy);
}

[data-theme="dark"] .showcase-icon-box {
  background: #ffea00;
  color: #0a0a0a;
}

.showcase-card-title {
  font-size: 1.6rem;
}

.showcase-card-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 28px;
}

.grid-capsules {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.capsule-badge {
  background: var(--carbon-elevated);
  border: 2px solid var(--border-heavy);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: transform 0.15s ease, background 0.15s ease;
}

.capsule-badge:hover {
  transform: translate(-2px, -2px);
  background: #ffea00;
  color: #0a0a0a;
  box-shadow: 3px 3px 0px var(--border-heavy);
}

.capsule-name {
  font-family: var(--font-display);
  font-size: 0.95rem;
}

.capsule-spec {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 700;
}

.capsule-badge:hover .capsule-spec {
  color: #0a0a0a;
}

.tactical-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 2px solid var(--border-heavy);
  padding-top: 18px;
}

.tactical-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.tactical-list li::before {
  content: "⚡";
  color: #ffea00;
  text-shadow: 1px 1px 0px #0a0a0a;
  font-weight: 900;
}

/* ==========================================================================
   Real Market Pricing Table (参考网上真实机场/代理套餐价格)
   ========================================================================== */

.pricing-four-col {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 50px;
  align-items: stretch;
}

.pricing-sticker-tier {
  background: var(--carbon-surface);
  border: var(--border-width) solid var(--border-heavy);
  border-radius: var(--radius-sticker);
  box-shadow: var(--shadow-brutal);
  padding: 34px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.2s cubic-bezier(0, 0, 0.2, 1), box-shadow 0.2s ease;
}

.pricing-sticker-tier:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-brutal-lg);
}

/* Featured Badge */
.pricing-sticker-tier.featured {
  background: var(--carbon-surface);
  border: 4px solid #ffea00;
  box-shadow: 8px 8px 0px var(--border-heavy);
}

[data-theme="light"] .pricing-sticker-tier.featured {
  border-color: #0a0a0a;
  background: #fffdf0;
}

.featured-ribbon-tag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%) rotate(-1deg);
  background: #ffea00;
  color: #0a0a0a;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 900;
  padding: 4px 16px;
  border: 2px solid #0a0a0a;
  box-shadow: 3px 3px 0px #0a0a0a;
  white-space: nowrap;
}

.plan-tier-title {
  font-size: 1.4rem;
  margin-bottom: 6px;
}

.plan-tier-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  min-height: 42px;
  margin-bottom: 16px;
}

.price-display-wrap {
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 2px dashed var(--border-heavy);
}

.price-currency {
  font-family: var(--font-display);
  font-size: 1.4rem;
  vertical-align: top;
}

.price-num {
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 1;
}

.price-duration {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.price-market-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  background: #ffea00;
  color: #0a0a0a;
  padding: 2px 8px;
  border: 1px solid var(--border-heavy);
  margin-top: 8px;
}

.plan-specs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 30px;
  flex-grow: 1;
}

.plan-spec-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.plan-spec-row svg {
  width: 18px;
  height: 18px;
  color: #ffea00;
  stroke: var(--border-heavy);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==========================================================================
   User Reviews & Testimonials
   ========================================================================== */

.reviews-three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}

.review-sticker {
  background: var(--carbon-surface);
  border: var(--border-width) solid var(--border-heavy);
  padding: 28px;
  box-shadow: var(--shadow-brutal);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.2s ease;
}

.review-sticker:hover {
  transform: translateY(-4px) rotate(0.5deg);
  box-shadow: var(--shadow-brutal-lg);
}

.review-quote {
  font-size: 0.96rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 24px;
  flex-grow: 1;
}

.review-author-row {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 2px solid var(--border-heavy);
  padding-top: 16px;
}

.author-stencil-avatar {
  width: 44px;
  height: 44px;
  background: #ffea00;
  border: 2px solid var(--border-heavy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: #0a0a0a;
}

.author-meta h4 {
  font-size: 1rem;
  margin-bottom: 2px;
}

.author-meta p {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */

.faq-accordion-wrap {
  max-width: 860px;
  margin: 48px auto 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-brutal-item {
  background: var(--carbon-surface);
  border: var(--border-width) solid var(--border-heavy);
  box-shadow: var(--shadow-brutal-sm);
  transition: box-shadow 0.15s ease;
}

.faq-brutal-item[open] {
  box-shadow: var(--shadow-brutal);
  border-color: var(--border-heavy);
}

.faq-question-title {
  padding: 20px 24px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

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

.faq-icon-cross {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 900;
  transition: transform 0.2s ease;
  line-height: 1;
}

.faq-brutal-item[open] .faq-icon-cross {
  transform: rotate(45deg);
  color: #ffea00;
}

.faq-body-content {
  padding: 0 24px 24px;
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.75;
  border-top: 1px dashed var(--border-heavy);
  padding-top: 16px;
}

/* Streetwear Pre-footer CTA Box */
.banner-callout {
  margin-top: 70px;
  background: #ffea00;
  color: #0a0a0a;
  border: var(--border-width) solid #0a0a0a;
  box-shadow: var(--shadow-brutal-lg);
  padding: 50px 36px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.banner-callout h2 {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  color: #0a0a0a;
  margin-bottom: 16px;
}

.banner-callout p {
  color: #222222;
  font-size: 1.15rem;
  max-width: 650px;
  margin: 0 auto 30px;
  font-weight: 500;
}

/* ==========================================================================
   Site Footer (Strictly 4 Links)
   ========================================================================== */

.site-footer {
  background: var(--bg-secondary);
  border-top: var(--border-width) solid var(--border-heavy);
  padding: 50px 0 35px;
  margin-top: 90px;
}

.footer-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 30px;
  border-bottom: 2px solid var(--border-heavy);
  flex-wrap: wrap;
  gap: 24px;
}

.footer-four-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-link-btn {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-primary);
  text-decoration: none;
  padding: 6px 14px;
  border: 2px solid var(--border-heavy);
  background: var(--carbon-surface);
  box-shadow: 3px 3px 0px var(--border-heavy);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.footer-link-btn:hover {
  background: #ffea00;
  color: #0a0a0a;
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0px var(--border-heavy);
}

.footer-bottom-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Sub-Pages Specific Article Styles
   ========================================================================== */

.subpage-banner {
  padding: 50px 0 35px;
  background: var(--bg-secondary);
  border-bottom: var(--border-width) solid var(--border-heavy);
}

.subpage-container {
  padding: 50px 0 80px;
  max-width: 920px;
  margin: 0 auto;
}

.article-poster {
  background: var(--carbon-surface);
  border: var(--border-width) solid var(--border-heavy);
  box-shadow: var(--shadow-brutal-lg);
  padding: 44px;
}

.article-poster h2 {
  font-size: 1.8rem;
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 3px solid var(--border-heavy);
}

.article-poster h2:first-of-type {
  margin-top: 0;
}

.article-poster h3 {
  font-size: 1.35rem;
  margin: 24px 0 12px;
}

.article-poster p, .article-poster ul, .article-poster ol {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.article-poster ul, .article-poster ol {
  padding-left: 24px;
}

.article-poster li {
  margin-bottom: 8px;
}

.streetwear-box {
  padding: 20px 24px;
  border: 2px solid var(--border-heavy);
  box-shadow: 4px 4px 0px var(--border-heavy);
  margin: 24px 0;
  font-size: 0.98rem;
}

.box-yellow {
  background: #ffea00;
  color: #0a0a0a;
}

.box-dark {
  background: var(--carbon-elevated);
  color: var(--text-primary);
}

/* ==========================================================================
   Responsive Adaptations (@media)
   Strict Mobile Single Column & Finger-Friendly Tap Targets
   ========================================================================== */

@media (max-width: 1024px) {
  .pricing-four-col {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-sticker-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 74px;
    left: 0;
    width: 100%;
    background: var(--carbon-surface);
    flex-direction: column;
    padding: 24px;
    border-bottom: var(--border-width) solid var(--border-heavy);
    box-shadow: var(--shadow-brutal-lg);
    gap: 16px;
  }

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

  .mobile-menu-btn {
    display: inline-flex;
  }

  /* Single Column Layouts on Mobile */
  .features-sticker-grid,
  .showcase-two-col,
  .pricing-four-col,
  .reviews-three-col,
  .mockup-stats-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-main-title {
    font-size: 2.3rem;
  }

  .hero-cta-wrap {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-wrap .btn {
    width: 100%;
  }

  .footer-top-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-four-nav {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 12px;
  }

  .footer-link-btn {
    text-align: center;
    width: 100%;
  }

  .article-poster {
    padding: 24px 18px;
  }
}

@media (max-width: 480px) {
  .grid-capsules {
    grid-template-columns: 1fr;
  }
  .hero-main-title {
    font-size: 2rem;
  }
}