/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Noto Sans CJK SC', 'Droid Sans Fallback', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: #ffffff;
  color: #2d1a24;
  line-height: 1.75;
  overflow-x: hidden;
}
a { color: #8b2252; text-decoration: none; transition: color .2s; }
a:hover { color: #a83068; }
::selection { background: #8b2252; color: #fff; }

/* ===== Animated Background ===== */
.bg-flow {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.bg-flow::before,
.bg-flow::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
  animation-direction: alternate;
}
.bg-flow::before {
  width: 60vw; height: 60vw;
  max-width: 700px; max-height: 700px;
  top: -10%; left: -10%;
  background: radial-gradient(circle, rgba(139, 34, 82, .08) 0%, rgba(106, 32, 128, .04) 50%, transparent 70%);
  animation: floatA 18s infinite alternate;
}
.bg-flow::after {
  width: 50vw; height: 50vw;
  max-width: 600px; max-height: 600px;
  bottom: -10%; right: -10%;
  background: radial-gradient(circle, rgba(106, 32, 128, .07) 0%, rgba(80, 20, 100, .03) 50%, transparent 70%);
  animation: floatB 22s infinite alternate;
}
.bg-blob-c {
  position: absolute;
  width: 45vw; height: 45vw;
  max-width: 550px; max-height: 550px;
  top: 40%; left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  filter: blur(140px);
  background: radial-gradient(circle, rgba(160, 48, 112, .06) 0%, rgba(139, 34, 82, .02) 50%, transparent 70%);
  animation: floatC 25s infinite alternate;
}
@keyframes floatA {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(15vw, 20vh) scale(1.15); }
}
@keyframes floatB {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-18vw, -15vh) scale(1.2); }
}
@keyframes floatC {
  0% { transform: translate(-50%, -50%) scale(1); }
  100% { transform: translate(-40%, -55%) scale(1.1); }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f8f4f6; }
::-webkit-scrollbar-thumb { background: #8b2252; border-radius: 3px; }

/* ===== Utility ===== */
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 12px;
  color: #2d1a24;
  position: relative;
  display: inline-block;
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, #8b2252, #6a2080);
  border-radius: 2px;
}
.section-subtitle {
  font-size: 1rem;
  color: #7a6070;
  margin-top: 16px;
  margin-bottom: 40px;
  max-width: 640px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  padding: 0 24px;
  transition: background .3s, box-shadow .3s;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(139, 34, 82, .08);
}
.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #8b2252, #6a2080);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  font-weight: 800;
  box-shadow: 0 2px 12px rgba(139, 34, 82, .25);
}
.logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: #2d1a24;
  letter-spacing: .5px;
}
.logo-text span { color: #8b2252; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  font-size: .88rem;
  font-weight: 500;
  color: #5a4050;
  transition: color .2s;
  position: relative;
  white-space: nowrap;
}
.nav-links a:hover { color: #8b2252; }
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #8b2252, #6a2080);
  border-radius: 1px;
  transition: width .25s;
}
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  padding: 8px 20px !important;
  font-size: .82rem !important;
  font-weight: 600 !important;
  color: #fff !important;
  background: linear-gradient(135deg, #8b2252, #6a2080) !important;
  border-radius: 20px !important;
  box-shadow: 0 2px 12px rgba(139, 34, 82, .25);
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { box-shadow: 0 4px 18px rgba(139, 34, 82, .4); }

/* Mobile menu */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #5a4050;
  border-radius: 2px;
  transition: all .3s;
}
.nav-toggle span + span { margin-top: 5px; }
.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); }

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, .97);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 20px 24px 28px;
    gap: 16px;
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: all .3s;
    box-shadow: 0 8px 24px rgba(139, 34, 82, .08);
  }
  .nav-links.show {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links a { font-size: .95rem; color: #2d1a24; }
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #8b2252, #a03068, #6a2080);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all .3s ease;
  box-shadow: 0 4px 24px rgba(139, 34, 82, .25);
  text-decoration: none;
  letter-spacing: .5px;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 36px rgba(139, 34, 82, .4);
  color: #fff;
}
.btn-primary:active { transform: translateY(0); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: .95rem;
  font-weight: 600;
  color: #8b2252;
  background: transparent;
  border: 1.5px solid rgba(139, 34, 82, .3);
  border-radius: 50px;
  cursor: pointer;
  transition: all .3s ease;
  text-decoration: none;
}
.btn-outline:hover {
  background: rgba(139, 34, 82, .06);
  border-color: #8b2252;
  color: #a03068;
  box-shadow: 0 0 20px rgba(139, 34, 82, .08);
}

/* ===== Hero / Part 1 ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 64px;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(139, 34, 82, .08) 0%, rgba(106, 32, 128, .04) 40%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; text-align: center; padding: 40px 24px; }
.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #8b2252;
  border: 1px solid rgba(139, 34, 82, .2);
  border-radius: 20px;
  margin-bottom: 28px;
  background: rgba(139, 34, 82, .04);
}
.hero-title {
  font-size: clamp(2.4rem, 7vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  color: #1a0e14;
}
.hero-title span {
  background: linear-gradient(135deg, #8b2252, #6a2080);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  color: #5a4050;
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

/* Safety Principles */
.safety-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 780px;
  margin: 0 auto 44px;
}
.safety-item {
  background: #fff;
  border: 1px solid rgba(139, 34, 82, .1);
  border-radius: 14px;
  padding: 22px 16px;
  text-align: center;
  transition: all .3s;
  box-shadow: 0 2px 12px rgba(139, 34, 82, .04);
}
.safety-item:hover {
  border-color: rgba(139, 34, 82, .25);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(139, 34, 82, .1);
}
.safety-item .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(139, 34, 82, .1), rgba(106, 32, 128, .08));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  margin: 0 auto 12px;
}
.safety-item strong {
  display: block;
  font-size: .95rem;
  color: #2d1a24;
  margin-bottom: 4px;
}
.safety-item .safety-label {
  font-size: .78rem;
  color: #7a6070;
  line-height: 1.4;
}

/* ===== Part 2 — Role Cards ===== */
.roles-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.role-card {
  background: #fff;
  border: 1px solid rgba(139, 34, 82, .08);
  border-radius: 16px;
  padding: 28px 22px;
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(139, 34, 82, .04);
}
.role-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: 16px 16px 0 0;
}
.role-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 34, 82, .18);
  box-shadow: 0 12px 40px rgba(139, 34, 82, .1);
}
.role-card.dom::before { background: linear-gradient(90deg, #8b2252, #c04878); }
.role-card.sub::before { background: linear-gradient(90deg, #3a5a8b, #6888b8); }
.role-card.switch::before { background: linear-gradient(90deg, #6a2080, #9050a8); }
.role-card.sadist::before { background: linear-gradient(90deg, #8b2230, #c04858); }
.role-card.maso::before { background: linear-gradient(90deg, #3a6888, #6898b8); }
.role-card.daddy::before { background: linear-gradient(90deg, #8b5a22, #c09048); }
.role-card.bratty::before { background: linear-gradient(90deg, #8b2252, #c04880); }
.role-card.rope::before { background: linear-gradient(90deg, #4a7a30, #78a858); }

/* Role card header — mobile: icon + title side by side */
.role-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
  margin-bottom: 10px;
}
@media (max-width: 768px) {
  .role-header {
    flex-direction: row;
    align-items: center;
    gap: 12px;
  }
  .role-icon {
    margin-bottom: 0;
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }
  .role-name {
    font-size: .95rem;
  }
  .role-tag {
    margin-bottom: 4px;
  }
  .role-desc {
    font-size: .78rem;
  }
}

.role-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 14px;
  flex-shrink: 0;
}
.role-card.dom .role-icon { background: rgba(139, 34, 82, .08); }
.role-card.sub .role-icon { background: rgba(58, 90, 139, .08); }
.role-card.switch .role-icon { background: rgba(106, 32, 128, .08); }
.role-card.sadist .role-icon { background: rgba(139, 34, 48, .08); }
.role-card.maso .role-icon { background: rgba(58, 104, 136, .08); }
.role-card.daddy .role-icon { background: rgba(139, 90, 34, .08); }
.role-card.bratty .role-icon { background: rgba(139, 34, 82, .08); }
.role-card.rope .role-icon { background: rgba(74, 122, 48, .08); }

.role-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: #2d1a24;
}
.role-tag {
  display: inline-block;
  font-size: .72rem;
  padding: 2px 10px;
  border-radius: 10px;
  margin-bottom: 10px;
  font-weight: 500;
}
.role-card.dom .role-tag { background: rgba(139, 34, 82, .08); color: #8b2252; }
.role-card.sub .role-tag { background: rgba(58, 90, 139, .08); color: #3a5a8b; }
.role-card.switch .role-tag { background: rgba(106, 32, 128, .08); color: #6a2080; }
.role-card.sadist .role-tag { background: rgba(139, 34, 48, .08); color: #8b2230; }
.role-card.maso .role-tag { background: rgba(58, 104, 136, .08); color: #3a6888; }
.role-card.daddy .role-tag { background: rgba(139, 90, 34, .08); color: #8b5a22; }
.role-card.bratty .role-tag { background: rgba(139, 34, 82, .08); color: #8b2252; }
.role-card.rope .role-tag { background: rgba(74, 122, 48, .08); color: #4a7a30; }

.role-desc { font-size: .82rem; color: #7a6070; line-height: 1.65; }

/* ===== Play Types — K0-K9 ===== */
.play-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.play-card {
  background: #fff;
  border: 1px solid rgba(139, 34, 82, .08);
  border-radius: 14px;
  padding: 24px 18px;
  text-align: center;
  transition: all .3s ease;
  box-shadow: 0 2px 12px rgba(139, 34, 82, .04);
  position: relative;
  overflow: hidden;
}
.play-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #8b2252, #6a2080);
  border-radius: 14px 14px 0 0;
}
.play-card:hover {
  transform: translateY(-3px);
  border-color: rgba(139, 34, 82, .18);
  box-shadow: 0 8px 28px rgba(139, 34, 82, .1);
}
.play-badge {
  display: inline-block;
  font-size: 1.3rem;
  font-weight: 800;
  color: #8b2252;
  margin-bottom: 6px;
  letter-spacing: 1px;
}
.play-name {
  font-size: .9rem;
  font-weight: 700;
  color: #2d1a24;
  margin-bottom: 6px;
}
.play-desc {
  font-size: .75rem;
  color: #7a6070;
  line-height: 1.6;
}

/* ===== Part 3 — Comparison ===== */
.comparison-wrapper {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  align-items: stretch;
  margin-bottom: 40px;
}
.compare-card {
  background: #fff;
  border: 1px solid rgba(139, 34, 82, .08);
  border-radius: 16px;
  padding: 32px 28px;
  box-shadow: 0 2px 12px rgba(139, 34, 82, .04);
}
.compare-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #2d1a24;
}
.compare-card ul {
  list-style: none;
  padding: 0;
}
.compare-card ul li {
  padding: 8px 0;
  font-size: .9rem;
  color: #5a4050;
  border-bottom: 1px solid rgba(139, 34, 82, .06);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.compare-card ul li:last-child { border-bottom: none; }
.compare-card ul li::before {
  content: '\25C6';
  font-size: .55rem;
  color: #8b2252;
  margin-top: 6px;
  flex-shrink: 0;
}
.compare-vs {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
}
.compare-vs span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(139, 34, 82, .08), rgba(106, 32, 128, .08));
  border: 1px solid rgba(139, 34, 82, .12);
  font-weight: 800;
  font-size: .85rem;
  color: #8b2252;
}

.common-features {
  background: rgba(139, 34, 82, .02);
  border: 1px solid rgba(139, 34, 82, .08);
  border-radius: 16px;
  padding: 28px 32px;
}
.common-features h3 {
  font-size: 1.05rem;
  color: #8b2252;
  margin-bottom: 16px;
}
.common-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px 24px;
  list-style: none;
  padding: 0;
}
.common-list li {
  font-size: .9rem;
  color: #5a4050;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.common-list li::before {
  content: '\2726';
  color: #8b2252;
  font-size: .75rem;
  flex-shrink: 0;
  margin-top: 3px;
}

/* ===== Part 4 — Audience ===== */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.audience-card {
  background: #fff;
  border: 1px solid rgba(139, 34, 82, .08);
  border-radius: 16px;
  padding: 36px 28px;
  text-align: center;
  transition: all .3s ease;
  box-shadow: 0 2px 12px rgba(139, 34, 82, .04);
}
.audience-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 34, 82, .18);
  box-shadow: 0 12px 40px rgba(139, 34, 82, .1);
}
.audience-emoji {
  font-size: 2.4rem;
  margin-bottom: 16px;
  display: block;
}
.audience-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: #2d1a24;
  margin-bottom: 12px;
}
.audience-desc {
  font-size: .88rem;
  color: #5a4050;
  line-height: 1.7;
  margin-bottom: 24px;
  text-align: left;
}
.audience-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-start;
  margin-bottom: 24px;
}
.audience-tags span {
  font-size: .75rem;
  padding: 4px 12px;
  border-radius: 12px;
  background: rgba(139, 34, 82, .06);
  color: #8b2252;
  border: 1px solid rgba(139, 34, 82, .1);
}

/* ===== Part 5 — FAQ ===== */
.faq-wrapper {
  display: flex;
  justify-content: center;
}
.faq-list { max-width: 720px; width: 100%; }
.faq-item {
  border: 1px solid rgba(139, 34, 82, .08);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s;
  background: #fff;
}
.faq-item:hover {
  border-color: rgba(139, 34, 82, .18);
  box-shadow: 0 4px 16px rgba(139, 34, 82, .06);
}
.faq-q {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: .95rem;
  font-weight: 600;
  color: #2d1a24;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: inherit;
  line-height: 1.5;
}
.faq-q:hover { color: #8b2252; }
.faq-arrow {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .3s;
  color: #8b2252;
  font-size: .8rem;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
}
.faq-item.open .faq-a { max-height: 400px; }
.faq-a-inner {
  padding: 0 24px 20px;
  font-size: .88rem;
  color: #5a4050;
  line-height: 1.8;
}

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 48px 24px 100px;
  border-top: 1px solid rgba(139, 34, 82, .06);
}
.footer p { font-size: .8rem; color: #a09098; }
.footer-warn {
  margin-top: 12px;
  font-size: .75rem;
  color: #b0a0a8;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ===== Mobile Bottom Bar ===== */
.mobile-bottom-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 300;
  padding: 12px 24px;
  padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(139, 34, 82, .08);
  justify-content: center;
}
.mobile-bottom-bar .btn-primary {
  width: 100%;
  justify-content: center;
  font-size: .95rem;
  padding: 12px 24px;
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 250;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(139, 34, 82, .15);
  color: #8b2252;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  opacity: 0;
  transform: translateY(12px);
  transition: all .3s;
  pointer-events: none;
  box-shadow: 0 2px 12px rgba(139, 34, 82, .08);
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover {
  background: rgba(139, 34, 82, .06);
  border-color: rgba(139, 34, 82, .3);
  color: #a03068;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .roles-grid { grid-template-columns: repeat(2, 1fr); }
  .play-grid { grid-template-columns: repeat(3, 1fr); }
  .common-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .mobile-bottom-bar { display: flex; }
  .back-to-top { bottom: 80px; }
  .comparison-wrapper {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .compare-vs { padding: 8px 0; }
  .compare-vs span { width: 40px; height: 40px; }
  .common-list { grid-template-columns: repeat(2, 1fr); }
  .play-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .section { padding: 56px 0; }
  .safety-grid { grid-template-columns: repeat(2, 1fr); }
  .roles-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .role-card { padding: 18px 14px; }
  .play-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .play-card { padding: 18px 14px; }
  .compare-card { padding: 24px 20px; }
  .common-features { padding: 20px; }
  .common-list { grid-template-columns: 1fr; }
  .audience-card { padding: 28px 20px; }
  .back-to-top { bottom: 80px; right: 16px; }
  .nav-links a { font-size: .88rem; }
  .hero-content { padding: 32px 16px; }
}
@media (max-width: 400px) {
  .roles-grid { grid-template-columns: 1fr; }
  .play-grid { grid-template-columns: repeat(2, 1fr); }
  .safety-grid { gap: 10px; }
  .safety-item { padding: 16px 10px; }
}