/* SakuraCat Mirror — style.css */
@import url('/assets/fonts/local-fonts.css');
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/css/all.min.css');

:root {
  --bg: #ffffff;
  --bg-soft: #fbfaf7;
  --bg-warm: #f7f4ee;
  --surface: #ffffff;
  --surface-warm: #f1ede5;
  --ink: #121416;
  --ink-soft: #4f5358;
  --ink-muted: #777b80;
  --brand: #ff5159;
  --brand-hover: #ef454e;
  --brand-soft: #ffe8e9;
  --border: #d9d6cf;
  --border-strong: #bbb8b1;
  --success-soft: #e9f3ec;
  --shadow-soft: 0 10px 30px rgba(18,20,22,.06);
  --font-display: "Fraunces", Georgia, serif;
  --font-sans: Inter, system-ui, -apple-system, sans-serif;
  --page-max: 1180px;
  --gutter: 32px;
  --transition-fast: 120ms ease;
  --transition-ui: 160ms ease;
  --transition-panel: 200ms ease;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
html, body { margin: 0; padding: 0; overflow-x: hidden; max-width: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.68;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--brand); }
ul { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4 { font-family: var(--font-display); margin: 0; }
h1 {
  font-size: clamp(42px, 6.2vw, 72px);
  line-height: 1.0;
  letter-spacing: -.025em;
  font-weight: 700;
}
h2 {
  font-size: clamp(32px, 4.2vw, 52px);
  line-height: 1.08;
  letter-spacing: -.015em;
  font-weight: 700;
}
h3 { font-size: clamp(22px, 2.5vw, 32px); line-height: 1.12; font-weight: 700; }
p { margin: 0 0 16px; }

.page-container {
  width: min(calc(100% - (var(--gutter) * 2)), var(--page-max));
  margin-inline: auto;
}

.eyebrow {
  margin-bottom: 14px;
  color: var(--ink-muted);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 650;
  letter-spacing: .05em;
}

/* ─── BUTTONS ─── */
.btn-primary, .btn-secondary {
  min-height: 44px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-ui), border-color var(--transition-ui), transform var(--transition-ui);
}
.btn-primary {
  background: var(--brand);
  color: #fff;
  border: 1px solid var(--brand);
}
.btn-primary:hover {
  background: var(--brand-hover);
  border-color: var(--brand-hover);
  color: #fff;
  transform: translateY(-1px);
}
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border-strong);
}
.btn-secondary:hover {
  background: var(--surface);
  border-color: var(--ink-soft);
  color: var(--ink);
}
.btn-cta {
  min-height: 42px;
  padding: 0 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--brand);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
  transition: background-color var(--transition-ui), transform var(--transition-ui);
}
.btn-cta:hover { background: var(--brand-hover); color: #fff; transform: translateY(-1px); }
.btn-lg { min-height: 48px; padding: 0 28px; font-size: 16px; }

/* ─── HEADER ─── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid rgba(18,20,22,.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.nav {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand { display: flex; align-items: center; flex-shrink: 0; }
.logo { height: 34px; width: auto; max-width: 160px; object-fit: contain; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links > li > a {
  color: var(--ink);
  font-size: 15px;
  font-weight: 550;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}
.nav-links > li > a:hover { color: var(--brand); background: rgba(255,81,89,.06); text-decoration: none; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
  margin-left: auto;
}

.mobile-lang { display: none; }

/* ─── DROPDOWN / LANGUAGE SWITCHER ─── */
.dropdown { position: relative; }
.lang-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--ink);
  padding: 7px 14px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  font-family: var(--font-sans);
}
.lang-btn:hover { border-color: var(--border-strong); background: var(--surface); }
.lang-btn i { font-size: 11px; transition: transform var(--transition-ui); }
.dropdown.open .lang-btn i.fa-chevron-down { transform: rotate(180deg); }
.dropdown.open .lang-btn { border-color: var(--border-strong); background: var(--surface); }

.dropdown-panel {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 6px;
  display: none;
  min-width: 190px;
  z-index: 1001;
}
.dropdown.open .dropdown-panel { display: block; }
.dropdown-panel-inner {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 14px 36px rgba(18,20,22,.10);
  padding: 6px;
}
.dropdown-panel a {
  display: block;
  padding: 10px 14px;
  color: var(--ink);
  font-size: 14px;
  border-radius: 8px;
  transition: background var(--transition-fast);
  white-space: nowrap;
}
.dropdown-panel a:hover { background: var(--bg-soft); color: var(--ink); text-decoration: none; }
.dropdown-panel a.active { color: var(--brand); font-weight: 600; }

/* ─── HAMBURGER ─── */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--ink);
  font-size: 24px;
  padding: 6px;
  order: 99;
  line-height: 1;
}

/* ─── HERO ─── */
.hero { padding: 72px 0 96px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, .95fr);
  gap: 64px;
  align-items: center;
}
.hero-copy { position: relative; z-index: 1; }
.hero-lead {
  margin-top: 28px;
  max-width: 560px;
  display: grid;
  gap: 8px;
}
.hero-lead p { margin: 0; font-size: 18px; line-height: 1.55; color: var(--ink-soft); }
.hero-actions {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero-value {
  margin-top: 20px;
  color: var(--ink-soft);
  font-size: 14px;
}
.hero-value strong { color: var(--ink); font-weight: 700; }

.hero-image-card {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
}
.hero-image-card img { width: 100%; height: auto; display: block; }
.hero-region-chips {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.region-chip {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(4px);
  padding: 5px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  border: 1px solid rgba(0,0,0,.06);
}
.region-chip.highlight { background: var(--brand); color: #fff; border-color: var(--brand); font-weight: 650; }

/* ─── COVERAGE FACTS ─── */
.coverage-facts {
  margin-top: 64px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.coverage-fact { padding: 24px; }
.coverage-fact + .coverage-fact { border-left: 1px solid var(--border); }
.coverage-fact .fact-value {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--ink);
  display: block;
  line-height: 1.2;
}
.coverage-fact .fact-label { font-size: 14px; color: var(--ink-muted); margin-top: 4px; display: block; }

/* ─── STORY INTRO ─── */
.story-intro { padding-top: 112px; max-width: 780px; }
.story-intro p { max-width: 640px; color: var(--ink-soft); }

/* ─── USE MODULES ─── */
.use-module { padding: 72px 0; border-top: 1px solid var(--border); }
.use-module__grid {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: 64px;
}
.module-index {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-muted);
  letter-spacing: .06em;
  margin-bottom: 12px;
}
.module-image {
  border-radius: 16px;
  overflow: hidden;
  margin-top: 24px;
  border: 1px solid var(--border);
}
.module-image img { width: 100%; height: 220px; object-fit: cover; }

.service-grid { margin-top: 28px; display: grid; gap: 14px; }
.service-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.service-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.service-grid--1 { grid-template-columns: minmax(0, 340px); }

.service-tile {
  min-height: 72px;
  padding: 14px 16px;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 14px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}
.service-tile:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.service-tile .tile-icon {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: var(--brand);
}
.service-tile .tile-name { font-size: 15px; font-weight: 600; }
.service-tile .tile-desc { font-size: 13px; color: var(--ink-muted); margin-top: 2px; }

.note-block {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  color: var(--ink-muted);
  font-size: 14px;
  line-height: 1.6;
}
.text-cta {
  display: inline-flex; align-items: center; gap: 6px;
  font-weight: 600; color: var(--brand); margin-top: 16px; font-size: 15px;
}
.text-cta:hover { text-decoration: underline; color: var(--brand-hover); }

/* ─── TECH SECTION ─── */
.tech-section { margin-top: 96px; padding: 96px 0; background: var(--bg-warm); }
.tech-section .copy-wide { max-width: 760px; color: var(--ink-soft); }
.address-diagram {
  margin-top: 40px; padding: 28px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 18px;
}
.diagram-row { display: flex; align-items: center; gap: 16px; padding: 14px 0; flex-wrap: wrap; }
.diagram-row + .diagram-row { border-top: 1px solid var(--border); }
.diagram-block { padding: 8px 16px; border-radius: 10px; font-size: 14px; font-weight: 500; white-space: nowrap; }
.diagram-block.user { background: var(--bg-soft); border: 1px solid var(--border); }
.diagram-block.address { background: var(--brand-soft); border: 1px solid var(--brand); color: var(--brand); font-weight: 600; }
.diagram-block.result { background: var(--success-soft); border: 1px solid #b8d8c2; }
.diagram-arrow { color: var(--ink-muted); font-size: 18px; }

.tech-points {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
}
.tech-points h3 { font-size: 22px; margin-bottom: 12px; }
.tech-points p { color: var(--ink-soft); font-size: 16px; }

/* ─── IMAGE FEATURE SECTIONS ─── */
.split-section { margin-top: 96px; }
.split-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.split-grid.reverse { direction: rtl; }
.split-grid.reverse > * { direction: ltr; }
.split-image { border-radius: 20px; overflow: hidden; border: 1px solid var(--border); }
.split-image img { width: 100%; height: 340px; object-fit: cover; }
.split-content h2 { font-size: clamp(24px, 3vw, 36px); margin-bottom: 16px; }
.split-content p { color: var(--ink-soft); }
.check-list { margin: 16px 0; }
.check-list li {
  padding: 6px 0; display: flex; gap: 10px; align-items: flex-start; font-size: 15px;
}
.check-list li::before { content: '✓'; color: var(--brand); font-weight: 700; flex-shrink: 0; }

/* ─── PRICING ─── */
.pricing-section { margin-top: 112px; }
.pricing-intro { max-width: 640px; }
.pricing-intro p { color: var(--ink-soft); }
.pricing-switch {
  margin-top: 28px; display: inline-flex; gap: 0; padding: 4px;
  border: 1px solid var(--border); border-radius: 999px; background: var(--surface);
}
.pricing-switch a {
  padding: 10px 20px; border-radius: 999px; font-size: 14px; font-weight: 600;
  color: var(--ink-soft); transition: all var(--transition-fast);
}
.pricing-switch a.active { background: var(--brand-soft); color: var(--brand); }
.pricing-switch a:hover { color: var(--brand); text-decoration: none; }
.small-note { font-size: 13px; color: var(--ink-muted); margin-top: 12px; }

.plan-group { margin-top: 64px; }
.plan-group > h3 { font-size: 24px; margin-bottom: 8px; }
.plan-group > p { color: var(--ink-soft); margin-bottom: 24px; font-size: 16px; }

.plan-grid { display: grid; gap: 20px; }
.plan-grid--monthly { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.plan-grid--packs { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.plan-card {
  position: relative; display: flex; flex-direction: column;
  min-height: 420px; padding: 24px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 18px;
  transition: box-shadow var(--transition-ui);
}
.plan-card:hover { box-shadow: var(--shadow-soft); }
.plan-card--featured { border: 2px solid var(--brand); box-shadow: 0 10px 30px rgba(255,81,89,.08); }
.plan-family-label { font-size: 12px; font-weight: 650; color: var(--ink-muted); letter-spacing: .04em; margin-bottom: 6px; }
.plan-card--featured .plan-family-label { color: var(--brand); }
.popular-badge {
  position: absolute; top: -12px; right: 16px;
  background: var(--brand); color: #fff; padding: 4px 14px; border-radius: 999px;
  font-size: 12px; font-weight: 700;
}
.plan-title { font-family: var(--font-display); font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.plan-usage { font-size: 14px; color: var(--ink-muted); margin-bottom: 16px; line-height: 1.5; }
.plan-price { font-size: 38px; font-weight: 700; letter-spacing: -.02em; line-height: 1; }
.plan-price .unit { font-size: 15px; font-weight: 500; color: var(--ink-muted); }
.plan-allowance { font-size: 16px; font-weight: 650; margin-top: 8px; color: var(--ink); }
.plan-features { margin: 20px 0; display: grid; gap: 10px; list-style: none; padding: 0; }
.plan-features li { display: flex; gap: 8px; align-items: flex-start; font-size: 14px; line-height: 1.5; }
.plan-features li::before { content: '✓'; color: var(--brand); font-weight: 700; flex-shrink: 0; }
.plan-detail { margin-top: auto; padding-top: 18px; border-top: 1px solid var(--border); font-size: 13px; color: var(--ink-muted); line-height: 1.5; }
.plan-card .btn-primary { width: 100%; margin-top: 16px; }

/* ─── PLAN COMPARISON ─── */
.plan-comparison { margin-top: 64px; }
.family-compare { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 24px; }
.family-card { padding: 28px; background: var(--surface); border: 1px solid var(--border); border-radius: 18px; }
.family-card h4 { font-family: var(--font-display); font-size: 20px; margin-bottom: 12px; }
.family-card p { font-size: 15px; color: var(--ink-soft); line-height: 1.65; margin: 0; }

/* ─── DETAILS ─── */
.details-section { margin-top: 112px; }
.details-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 32px; }
.detail-card {
  padding: 28px; background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  transition: border-color var(--transition-fast);
}
.detail-card:hover { border-color: var(--border-strong); }
.detail-card h3 { font-size: 20px; margin-bottom: 10px; font-family: var(--font-sans); }
.detail-card p { font-size: 15px; color: var(--ink-soft); margin: 0; line-height: 1.65; }

/* ─── ABOUT ─── */
.about-section { margin-top: 112px; }
.about-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr); gap: 64px; margin-top: 32px; }
.about-grid > div > p { color: var(--ink-soft); }
.privacy-panel { padding: 28px; background: var(--surface); border: 1px solid var(--border); border-radius: 18px; }
.privacy-panel h3 { font-size: 20px; margin-bottom: 14px; }
.privacy-panel p { font-size: 15px; color: var(--ink-soft); line-height: 1.65; }
.policy-links { margin-top: 16px; display: flex; gap: 16px; }
.policy-links a { font-size: 14px; font-weight: 600; color: var(--brand); }
.policy-links a:hover { text-decoration: underline; }

/* ─── HELP ─── */
.help-section { margin-top: 112px; }
.help-section .btn-primary { margin-top: 20px; }
.support-grid { margin-top: 36px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.support-card {
  padding: 28px; background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  min-height: 200px; transition: border-color var(--transition-fast), transform var(--transition-fast);
}
.support-card:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.support-card .card-icon { font-size: 28px; color: var(--brand); margin-bottom: 16px; }
.support-card h3 { font-size: 18px; margin-bottom: 8px; font-family: var(--font-sans); }
.support-card p { font-size: 14px; color: var(--ink-muted); margin: 0; line-height: 1.6; }
.support-card .card-link { display: inline-flex; align-items: center; gap: 4px; margin-top: 14px; font-size: 14px; font-weight: 600; color: var(--brand); }
.support-card .card-link:hover { text-decoration: underline; }

/* ─── FEATURES ─── */
.features { margin-top: 96px; padding: 96px 0; background: var(--bg-soft); }
.section-head { margin-bottom: 36px; }
.section-head h2 { margin-bottom: 12px; }
.section-head p { color: var(--ink-soft); max-width: 600px; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.feature-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 28px;
  transition: box-shadow var(--transition-ui), transform var(--transition-ui);
}
.feature-card:hover { box-shadow: var(--shadow-soft); transform: translateY(-2px); }
.feature-card i { font-size: 24px; color: var(--brand); margin-bottom: 16px; display: block; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; font-family: var(--font-sans); }
.feature-card p { font-size: 14px; color: var(--ink-muted); margin: 0; line-height: 1.6; }

/* ─── FAQ ─── */
.faq { margin-top: 96px; }
.faq-list { max-width: 760px; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  width: 100%; background: none; border: none; text-align: left;
  padding: 18px 0; font-size: 16px; font-weight: 600; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  color: var(--ink); font-family: var(--font-sans); gap: 12px;
}
.faq-q::after { content: '+'; font-size: 22px; font-weight: 400; color: var(--ink-muted); flex-shrink: 0; transition: transform var(--transition-ui); }
.faq-item.open .faq-q::after { content: '−'; }
.faq-a { display: none; padding: 0 0 18px; font-size: 15px; color: var(--ink-soft); line-height: 1.7; }
.faq-item.open .faq-a { display: block; }

/* ─── PAGE HERO ─── */
.page-hero { padding: 80px 0 64px; background: var(--bg-soft); border-bottom: 1px solid var(--border); }
.page-hero-inner { max-width: var(--page-max); margin: 0 auto; padding: 0 var(--gutter); }
.page-hero h1 { font-size: clamp(30px, 4vw, 48px); margin-bottom: 12px; }
.page-hero p { font-size: 18px; color: var(--ink-soft); max-width: 600px; margin: 0; }

/* ─── PROSE ─── */
.prose { max-width: 800px; margin: 0 auto; padding: 64px var(--gutter); }
.prose-inner h2 { font-size: 24px; margin-top: 40px; margin-bottom: 12px; }
.prose-inner h3 { font-size: 18px; margin-top: 28px; font-family: var(--font-sans); }
.prose-inner p { color: var(--ink-soft); line-height: 1.8; }
.prose-inner ul { margin: 12px 0 16px 24px; list-style: disc; }
.prose-inner ul li { color: var(--ink-soft); margin-bottom: 6px; }

/* ─── FOOTER ─── */
.site-footer {
  margin-top: 112px; padding: 64px 0 40px;
  background: var(--bg-soft); border-top: 1px solid var(--border);
}
.footer-grid {
  max-width: var(--page-max); margin: 0 auto; padding: 0 var(--gutter);
  display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 48px;
}
.footer-brand .logo-footer { height: 32px; width: auto; margin-bottom: 14px; }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 280px; color: var(--ink-soft); margin: 0; }
.footer-col h4 { font-family: var(--font-sans); font-size: 13px; font-weight: 700; color: var(--ink-muted); letter-spacing: .04em; margin-bottom: 14px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--ink-soft); font-size: 14px; transition: color var(--transition-fast); }
.footer-col ul li a:hover { color: var(--brand); text-decoration: none; }
.footer-bottom {
  max-width: var(--page-max); margin: 48px auto 0; padding: 24px var(--gutter) 0;
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; gap: 24px;
  color: var(--ink-muted); font-size: 13px;
}
.footer-bottom p { margin: 0; }

/* ─── FOCUS ─── */
:focus-visible { outline: 3px solid rgba(255,81,89,.45); outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1100px) {
  .plan-grid--monthly { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid { gap: 40px; }
}

@media (max-width: 900px) {
  :root { --gutter: 28px; }
  .hero-grid, .about-grid, .split-grid { grid-template-columns: 1fr; }
  .split-grid.reverse { direction: ltr; }
  .support-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-image-card { max-width: 480px; }
}

@media (max-width: 768px) {
  :root { --gutter: 20px; }
  .nav { padding: 0 10px; min-height: 64px; gap: 12px; }
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: center;
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 32px rgba(18,20,22,.10);
    padding: 12px 0 8px; z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-links > li { width: 100%; text-align: center; }
  .nav-links > li > a { display: block; width: 100%; padding: 14px 0; font-size: 17px; color: var(--ink); }
  .nav-links > li > a:hover { background: rgba(255,81,89,.06); text-decoration: none; }

  .nav-right { display: none; }
  .nav-toggle { display: block; margin-left: auto; }

  .mobile-lang {
    display: flex; justify-content: center; gap: 10px; padding: 14px 16px 8px;
    border-top: 1px solid var(--border); width: 100%; flex-wrap: wrap;
  }
  .nav-links li.mobile-lang a {
    display: inline-block; width: auto; padding: 6px 14px; font-size: 14px;
    border-radius: 8px; color: var(--ink-soft); border: 1px solid var(--border); background: var(--surface);
  }
  .nav-links li.mobile-lang a.active {
    color: var(--brand); font-weight: 700; border-color: var(--brand); background: var(--brand-soft);
  }

  .hero { padding: 48px 0 64px; }
  .hero-actions { flex-direction: column; }
  .hero-actions > * { width: 100%; text-align: center; }

  .coverage-facts { grid-template-columns: repeat(2, 1fr); }
  .coverage-fact:nth-child(3) { border-left: none; border-top: 1px solid var(--border); }
  .coverage-fact:nth-child(4) { border-top: 1px solid var(--border); }

  .use-module__grid, .tech-points, .family-compare, .details-grid,
  .support-grid, .plan-grid--monthly, .plan-grid--packs { grid-template-columns: 1fr; }
  .service-grid--4, .service-grid--3 { grid-template-columns: 1fr; }

  .story-intro, .pricing-section, .details-section, .about-section, .help-section {
    padding-top: 0; margin-top: 72px;
  }
  .tech-section { margin-top: 72px; padding: 64px 0; }
  .features, .faq { margin-top: 72px; }
  .split-section { margin-top: 72px; }
  .site-footer { margin-top: 72px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; }
  .plan-card { min-height: auto; }
  .btn-cta, .btn-lg { display: block; width: 100%; text-align: center; }
}

@media (max-width: 420px) {
  :root { --gutter: 16px; }
  h1 { font-size: 38px; }
  .hero-lead p { font-size: 16px; }
  .plan-price { font-size: 32px; }
}