/* ═══════════════════════════════════════════════
   Japanese Zen 日式禅意 Type3 — Custom Styles
   HHPoker Official — Minimal | Elegant | Calm
   ═══════════════════════════════════════════════ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;500;600;700&display=swap');

/* ── CSS Variables (Zen Palette) ── */
:root {
  --zen-bg:        #f7f3ed;      /* 米白底 */
  --zen-ink:       #2d2d2d;      /* 墨色 */
  --zen-vermillion:#c44536;      /* 朱红 accent */
  --zen-vermillion-hover: #a8382b;
  --zen-light:     #faf8f5;
  --zen-border:    #d4cfc9;      /* fine-line border */
  --zen-border-light: #e8e3dc;
  --zen-muted:     #8c8279;
  --zen-paper:     #fefcf9;
  --zen-gold:      #b8975a;      /* subtle gold accent */
  --zen-thin:       1px;         /* 间 — ma border width */
  --font-serif:    'Noto Serif JP', 'STSong', 'SimSun', 'Songti SC', serif;
  --font-sans:     'Noto Serif JP', 'Helvetica Neue', 'PingFang SC', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-serif);
  background-color: var(--zen-bg);
  color: var(--zen-ink);
  line-height: 1.8;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.4;
  color: var(--zen-ink);
}

p {
  margin-bottom: 1rem;
  color: #555;
}

a {
  color: var(--zen-ink);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--zen-vermillion);
}

/* ── Fine-Line Section Dividers ── */
.zen-divider {
  width: 100%;
  height: 1px;
  background: var(--zen-border);
  margin: 0;
}

.zen-divider-wide {
  width: 100%;
  height: 1px;
  background: var(--zen-border);
  margin: 3rem 0;
}

/* ── Dry Landscape (枯山水) Wavy Pattern Divider ── */
.zen-wave-divider {
  position: relative;
  height: 40px;
  margin: 2rem 0;
  overflow: hidden;
  opacity: 0.35;
}

.zen-wave-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 8px,
    var(--zen-border) 8px,
    var(--zen-border) 10px
  );
}

.zen-wave-divider::after {
  content: '';
  position: absolute;
  top: calc(50% - 6px);
  left: 0;
  right: 0;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    var(--zen-border) 0px,
    var(--zen-border) 4px,
    transparent 4px,
    transparent 12px
  );
}

/* ── Vertical Text Labels (縦書き) ── */
.zen-vertical-label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-serif);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--zen-muted);
  padding: 0.5rem 0.25rem;
  border-left: 1px solid var(--zen-border);
  margin-left: 0.75rem;
  user-select: none;
}

/* ── Navigation ── */
.zen-nav {
  background: var(--zen-paper);
  border-bottom: 1px solid var(--zen-border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.zen-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.zen-logo {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--zen-ink);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.zen-logo .logo-dot {
  width: 8px;
  height: 8px;
  background: var(--zen-vermillion);
  border-radius: 50%;
  display: inline-block;
}

.zen-nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  align-items: center;
}

.zen-nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--zen-ink);
  position: relative;
  padding-bottom: 2px;
}

.zen-nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--zen-vermillion);
  transition: width 0.3s ease;
}

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

.zen-nav-links a.active {
  color: var(--zen-vermillion);
}

/* Mobile menu button */
.zen-mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--zen-border);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  font-size: 1.25rem;
  color: var(--zen-ink);
  border-radius: 2px;
}

/* ── Buttons ── */
.zen-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2.5rem;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  border: 1px solid var(--zen-ink);
  background: transparent;
  color: var(--zen-ink);
  cursor: pointer;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.zen-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--zen-ink);
  transition: left 0.35s ease;
  z-index: 0;
}

.zen-btn:hover::before {
  left: 0;
}

.zen-btn:hover {
  color: var(--zen-paper);
}

.zen-btn span {
  position: relative;
  z-index: 1;
}

/* Primary button — vermillion */
.zen-btn-primary {
  border-color: var(--zen-vermillion);
  background: var(--zen-vermillion);
  color: #fff;
}

.zen-btn-primary::before {
  background: var(--zen-vermillion-hover);
}

.zen-btn-primary:hover {
  color: #fff;
}

/* Outline light */
.zen-btn-outline {
  border-color: var(--zen-border);
}

.zen-btn-outline:hover {
  border-color: var(--zen-ink);
}

/* Small */
.zen-btn-sm {
  padding: 0.55rem 1.5rem;
  font-size: 0.82rem;
}

/* ── Cards (Fine Line, No Shadows) ── */
.zen-card {
  background: var(--zen-paper);
  border: 1px solid var(--zen-border);
  padding: 2rem;
  transition: border-color 0.35s ease, background 0.35s ease;
  position: relative;
}

.zen-card:hover {
  border-color: var(--zen-ink);
  background: #fff;
}

.zen-card .zen-card-vertical-label {
  position: absolute;
  top: 1rem;
  right: 0.5rem;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--zen-muted);
  opacity: 0.6;
}

/* Card with left accent */
.zen-card-accent {
  border-left: 3px solid var(--zen-vermillion);
}

/* ── Hero Section ── */
.zen-hero {
  padding: 6rem 2rem 5rem;
  text-align: center;
  position: relative;
  background: var(--zen-bg);
}

.zen-hero-tag {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--zen-muted);
  margin-bottom: 1.5rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--zen-border);
}

.zen-hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.35;
  margin-bottom: 1.25rem;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.zen-hero p {
  font-size: 1.05rem;
  color: var(--zen-muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 2;
}

/* ── Section Spacing ── */
.zen-section {
  padding: 5rem 2rem;
}

.zen-section-sm {
  padding: 3rem 2rem;
}

.zen-container {
  max-width: 1120px;
  margin: 0 auto;
}

.zen-section-label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--zen-muted);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.zen-section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 600;
  margin-bottom: 0.75rem;
  letter-spacing: 0.04em;
}

.zen-section-subtitle {
  font-size: 0.95rem;
  color: var(--zen-muted);
  margin-bottom: 3rem;
  max-width: 540px;
}

/* ── Feature Cards Grid ── */
.zen-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.zen-feature-card {
  background: var(--zen-paper);
  border: 1px solid var(--zen-border);
  padding: 2.25rem 1.75rem;
  text-align: left;
  transition: border-color 0.3s ease;
  position: relative;
}

.zen-feature-card:hover {
  border-color: var(--zen-ink);
}

.zen-feature-card .feature-icon {
  font-size: 1.6rem;
  color: var(--zen-vermillion);
  margin-bottom: 1rem;
}

.zen-feature-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  letter-spacing: 0.03em;
}

.zen-feature-card p {
  font-size: 0.88rem;
  color: var(--zen-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

/* Vertical label on card */
.zen-feature-card .card-vlabel {
  position: absolute;
  top: 1rem;
  right: 0.4rem;
  writing-mode: vertical-rl;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: #c5bfb6;
}

/* ── Stats Row ── */
.zen-stats-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 3rem;
  padding: 3rem 0;
}

.zen-stat {
  text-align: center;
  min-width: 140px;
}

.zen-stat-number {
  display: block;
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--zen-ink);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.zen-stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--zen-muted);
  letter-spacing: 0.1em;
}

/* ── Testimonials ── */
.zen-testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.zen-testimonial-card {
  background: var(--zen-paper);
  border: 1px solid var(--zen-border);
  padding: 2rem;
  position: relative;
}

.zen-testimonial-card::before {
  content: '\201C';
  font-size: 4rem;
  color: var(--zen-border-light);
  position: absolute;
  top: 0.5rem;
  left: 1rem;
  line-height: 1;
  font-family: var(--font-serif);
}

.zen-testimonial-card .quote {
  font-size: 0.92rem;
  color: #555;
  line-height: 1.8;
  margin-bottom: 1.25rem;
  padding-top: 0.5rem;
}

.zen-testimonial-card .author {
  font-size: 0.8rem;
  color: var(--zen-muted);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.zen-testimonial-card .author-role {
  font-size: 0.7rem;
  color: #b0a99f;
}

/* ── FAQ Accordion ── */
.zen-faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.zen-faq-item {
  border-bottom: 1px solid var(--zen-border);
}

.zen-faq-item:first-child {
  border-top: 1px solid var(--zen-border);
}

.zen-faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.25rem 0;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--zen-ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  letter-spacing: 0.03em;
  transition: color 0.3s ease;
}

.zen-faq-question:hover {
  color: var(--zen-vermillion);
}

.zen-faq-question .faq-icon {
  font-size: 0.8rem;
  color: var(--zen-muted);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 1rem;
}

.zen-faq-item.active .zen-faq-question .faq-icon {
  transform: rotate(180deg);
  color: var(--zen-vermillion);
}

.zen-faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.zen-faq-item.active .zen-faq-answer {
  max-height: 400px;
}

.zen-faq-answer-inner {
  padding: 0 0 1.25rem;
  font-size: 0.9rem;
  color: #666;
  line-height: 1.8;
}

/* ── CTA Section ── */
.zen-cta {
  text-align: center;
  padding: 5rem 2rem;
  background: var(--zen-paper);
  border-top: 1px solid var(--zen-border);
  border-bottom: 1px solid var(--zen-border);
}

.zen-cta h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.75rem;
}

.zen-cta p {
  color: var(--zen-muted);
  margin-bottom: 2rem;
}

/* ── Footer ── */
.zen-footer {
  background: var(--zen-bg);
  padding: 3rem 2rem 1.5rem;
  border-top: 1px solid var(--zen-border);
  text-align: center;
}

.zen-footer .footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  list-style: none;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.zen-footer .footer-links a {
  font-size: 0.82rem;
  color: var(--zen-muted);
  letter-spacing: 0.05em;
}

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

.zen-footer .copyright {
  font-size: 0.75rem;
  color: #b0a99f;
  letter-spacing: 0.06em;
}

/* ── Platform Tabs ── */
.zen-tabs {
  display: flex;
  justify-content: center;
  gap: 1px;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--zen-border);
}

.zen-tab-btn {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.85rem 2rem;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--zen-muted);
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
}

.zen-tab-btn:hover {
  color: var(--zen-ink);
}

.zen-tab-btn.active {
  color: var(--zen-vermillion);
  border-bottom-color: var(--zen-vermillion);
}

.zen-tab-panel {
  display: none;
  animation: zenFadeIn 0.4s ease;
}

.zen-tab-panel.active {
  display: block;
}

@keyframes zenFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Download Steps ── */
.zen-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  counter-reset: step;
}

.zen-step {
  flex: 1 1 220px;
  max-width: 280px;
  background: var(--zen-paper);
  border: 1px solid var(--zen-border);
  padding: 2rem 1.5rem 2rem 3.5rem;
  position: relative;
  counter-increment: step;
}

.zen-step::before {
  content: '0' counter(step);
  position: absolute;
  top: 1.25rem;
  left: 1rem;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--zen-border);
  line-height: 1;
}

.zen-step h4 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

.zen-step p {
  font-size: 0.85rem;
  color: var(--zen-muted);
  margin-bottom: 0;
}

/* ── QR Code Placeholder ── */
.zen-qr-placeholder {
  width: 160px;
  height: 160px;
  margin: 2rem auto;
  border: 1px solid var(--zen-border);
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  position: relative;
}

.zen-qr-placeholder i {
  font-size: 3rem;
  color: var(--zen-border);
}

.zen-qr-placeholder::after {
  content: '';
  position: absolute;
  inset: 8px;
  border: 1px dashed var(--zen-border-light);
}

/* ── System Requirements Table ── */
.zen-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.zen-table th,
.zen-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--zen-border);
}

.zen-table thead th {
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--zen-ink);
  background: var(--zen-bg);
  border-bottom: 1px solid var(--zen-ink);
}

.zen-table tbody tr:hover {
  background: var(--zen-light);
}

/* ── Tier / VIP Cards ── */
.zen-tiers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
}

.zen-tier-card {
  background: var(--zen-paper);
  border: 1px solid var(--zen-border);
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
  transition: border-color 0.3s ease;
}

.zen-tier-card:hover {
  border-color: var(--zen-ink);
}

.zen-tier-card.premium {
  border-color: var(--zen-gold);
}

.zen-tier-card .tier-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.5rem;
  writing-mode: vertical-rl;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--zen-muted);
}

.zen-tier-card .tier-level {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--zen-muted);
  margin-bottom: 0.5rem;
}

.zen-tier-card .tier-name {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.zen-tier-card .tier-benefits {
  list-style: none;
  font-size: 0.85rem;
  color: #777;
  line-height: 2;
}

.zen-tier-card .tier-icon {
  font-size: 2rem;
  color: var(--zen-gold);
  margin-bottom: 0.75rem;
}

/* ── Join Process ── */
.zen-process {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  counter-reset: proc;
  position: relative;
}

.zen-process::before {
  content: '';
  position: absolute;
  top: 2rem;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--zen-border);
  z-index: 0;
}

.zen-process-step {
  flex: 1 1 200px;
  text-align: center;
  padding: 0 1.5rem 2rem;
  position: relative;
  z-index: 1;
  counter-increment: proc;
}

.zen-process-step .proc-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  border: 1px solid var(--zen-ink);
  border-radius: 50%;
  background: var(--zen-bg);
  font-size: 1.1rem;
  font-weight: 600;
}

.zen-process-step h4 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

.zen-process-step p {
  font-size: 0.85rem;
  color: var(--zen-muted);
}

/* ── Page Header (inner pages) ── */
.zen-page-header {
  text-align: center;
  padding: 4rem 2rem 2rem;
  background: var(--zen-paper);
  border-bottom: 1px solid var(--zen-border);
}

.zen-page-header h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: 0.5rem;
}

.zen-page-header .breadcrumb {
  font-size: 0.78rem;
  color: var(--zen-muted);
  letter-spacing: 0.08em;
}

.zen-page-header .breadcrumb a {
  color: var(--zen-muted);
}

.zen-page-header .breadcrumb a:hover {
  color: var(--zen-vermillion);
}

/* ── Club Intro ── */
.zen-club-intro {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  align-items: center;
}

.zen-club-intro .intro-text {
  flex: 1 1 400px;
}

.zen-club-intro .intro-text h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.zen-club-intro .intro-text p {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.9;
}

.zen-club-intro .intro-visual {
  flex: 1 1 300px;
  min-height: 300px;
  border: 1px solid var(--zen-border);
  background: var(--zen-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.zen-club-intro .intro-visual i {
  font-size: 4rem;
  color: var(--zen-border);
}

/* ── Scroll Animation ── */
.zen-animate {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.zen-animate.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Mobile Responsive ── */
@media (max-width: 768px) {
  .zen-mobile-toggle {
    display: block;
  }

  .zen-nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--zen-paper);
    flex-direction: column;
    gap: 0;
    padding: 0;
    border-bottom: 1px solid var(--zen-border);
  }

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

  .zen-nav-links a {
    display: block;
    padding: 0.9rem 2rem;
    border-top: 1px solid var(--zen-border-light);
  }

  .zen-hero {
    padding: 4rem 1.25rem 3rem;
  }

  .zen-section {
    padding: 3rem 1.25rem;
  }

  .zen-stats-row {
    gap: 1.5rem;
  }

  .zen-features-grid,
  .zen-testimonials-grid,
  .zen-tiers-grid {
    grid-template-columns: 1fr;
  }

  .zen-process::before {
    display: none;
  }

  .zen-tabs {
    flex-wrap: wrap;
  }

  .zen-tab-btn {
    padding: 0.7rem 1.25rem;
    font-size: 0.85rem;
  }

  .zen-club-intro {
    gap: 2rem;
  }
}

@media (max-width: 480px) {
  .zen-hero h1 {
    font-size: 1.6rem;
  }

  .zen-section-title {
    font-size: 1.3rem;
  }

  .zen-stat-number {
    font-size: 2rem;
  }

  .zen-steps {
    flex-direction: column;
    align-items: center;
  }

  .zen-step {
    max-width: 100%;
  }
}