/* ============================================================================
   style.css — Velour Landing Design System
   ----------------------------------------------------------------------------
   主题：Dark / Midnight（深色沉浸式，适合夜生活 / 成人社交调性）
   设计原则：
     - Mobile First（320px -> 1920px 逐步增强）
     - CSS Logical Properties（inset-inline-start 等，方便 RTL 未来支持）
     - 60fps：只用 transform / opacity 做动画
     - prefers-reduced-motion 尊重系统设置
     - 组件：Hero / Profile Deck / Social / How / Chat Preview / Why /
            Intent / Privacy / Safety / FAQ / Final CTA / Footer / 表单

   目录：
     01. Tokens         02. Reset & Base    03. Typography
     04. Layout & Grid  05. Buttons         06. Header & Nav
     07. Hero           08. Profile Deck    09. Social            10. How
     11. Chat Preview   12. Why             13. Intent            14. Privacy/Safety
     15. FAQ            16. Final CTA       17. Footer            18. Forms & Inputs
     19. Age Gate       20. Cookie Notice   21. Sticky CTA        22. Toast
     23. Landing (root) 24. Reveal          25. Utilities         26. Responsive
   ========================================================================== */

/* ==========================================================================
   01. TOKENS
   ========================================================================== */
:root {
  /* color primitives */
  --c-bg: #0b0b0f;
  --c-bg-elev: #131318;
  --c-bg-soft: #1a1a22;
  --c-surface: #17171e;
  --c-surface-2: #20202a;
  --c-border: rgba(255, 255, 255, 0.08);
  --c-border-strong: rgba(255, 255, 255, 0.16);

  --c-text: #f5f4f7;
  --c-text-dim: #b9b6c4;
  --c-text-faint: #87859a;

  --c-primary: #e7518f;      /* rose / magenta */
  --c-primary-bright: #ff6aa7;
  --c-primary-deep: #c23c78;
  --c-accent: #8d6bff;       /* violet */
  --c-gold: #ffb166;         /* warm highlight */

  --c-success: #4ade80;
  --c-danger: #ff5c7a;

  /* gradients */
  --grad-primary: linear-gradient(135deg, #ff6aa7 0%, #8d6bff 100%);
  --grad-hero: linear-gradient(180deg, rgba(11, 11, 15, 0.2) 0%, rgba(11, 11, 15, 0.92) 70%);

  /* glow */
  --glow-primary: 0 0 40px rgba(231, 81, 143, 0.35);
  --glow-accent: 0 0 40px rgba(141, 107, 255, 0.3);

  /* text sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-md: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);
  --text-3xl: clamp(1.875rem, 1.3rem + 3vw, 3.75rem);
  --text-4xl: clamp(2.5rem, 1.6rem + 5vw, 5.5rem);

  /* spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;
  --space-9: 6rem;
  --space-10: 8rem;

  /* layout */
  --container: 74rem;         /* 1184px max content */
  --container-narrow: 48rem;
  --header-h: 4.5rem;
  --radius-sm: 0.5rem;
  --radius-md: 0.875rem;
  --radius-lg: 1.25rem;
  --radius-xl: 2rem;
  --radius-full: 999px;

  /* elevation */
  --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-2: 0 8px 30px rgba(0, 0, 0, 0.45);
  --shadow-3: 0 20px 60px rgba(0, 0, 0, 0.55);

  /* motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast: 150ms;
  --dur-med: 320ms;
  --dur-slow: 600ms;

  /* misc */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Microsoft YaHei",
    "Noto Sans CJK SC", "Noto Sans JP", "Hiragino Sans", "Malgun Gothic",
    sans-serif;
}

/* ==========================================================================
   02. RESET & BASE
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  line-height: 1.5;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-md);
  line-height: 1.6;
  color: var(--c-text);
  background-color: var(--c-bg);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.no-scroll {
  overflow: hidden;
}

img,
picture,
video,
canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

::selection {
  background: rgba(231, 81, 143, 0.35);
  color: #fff;
}

/* custom scrollbar (chromium) */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--c-bg);
}
::-webkit-scrollbar-thumb {
  background: #2c2c38;
  border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover {
  background: #3a3a48;
}

/* ==========================================================================
   03. TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.text-muted { color: var(--c-text-dim); }
.text-faint { color: var(--c-text-faint); }
.text-center { text-align: center; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-primary-bright);
}

.kicker::before {
  content: "";
  width: 1.75rem;
  height: 1px;
  background: var(--c-primary);
}

.section-title {
  font-size: var(--text-3xl);
  margin-block: 0.75rem 0.75rem;
}

.section-lead {
  font-size: var(--text-lg);
  color: var(--c-text-dim);
  max-width: 42ch;
  margin-inline: auto;
}


/* ==========================================================================
   04. LAYOUT & GRID
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2.5rem);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  position: relative;
  padding-block: clamp(3.5rem, 8vw, 7rem);
}

.section--tight {
  padding-block: clamp(2.5rem, 6vw, 4rem);
}

.section--alt {
  background: linear-gradient(180deg, var(--c-bg) 0%, var(--c-bg-elev) 100%);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }

@media (min-width: 640px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   05. BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 3rem;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--text-md);
  line-height: 1;
  letter-spacing: 0.01em;
  transition: transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out),
    background-color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
  will-change: transform;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  color: #fff;
  background: var(--grad-primary);
  box-shadow: var(--glow-primary);
}
.btn--primary:hover {
  box-shadow: 0 0 54px rgba(255, 106, 167, 0.5);
  transform: translateY(-2px);
}

.btn--secondary {
  color: var(--c-text);
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-strong);
}
.btn--secondary:hover {
  border-color: var(--c-primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn--ghost {
  color: var(--c-text-dim);
  background: transparent;
  border: 1px solid transparent;
}
.btn--ghost:hover {
  color: #fff;
  border-color: var(--c-border-strong);
}

.btn--lg {
  min-height: 3.5rem;
  padding: 0.875rem 2.25rem;
  font-size: var(--text-lg);
}

.btn--block {
  width: 100%;
}

.btn--sm {
  min-height: 2.25rem;
  padding: 0.375rem 1rem;
  font-size: var(--text-sm);
}

.btn--icon {
  padding: 0.625rem;
  border-radius: var(--radius-full);
}


/* ==========================================================================
   06. HEADER & NAV
   ========================================================================== */
.header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 60;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background-color var(--dur-med) var(--ease-out),
    box-shadow var(--dur-med) var(--ease-out);
}

.header.is-scrolled {
  background: rgba(11, 11, 15, 0.82);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  box-shadow: 0 1px 0 var(--c-border);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  width: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.brand__mark {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 0.5rem;
  background: var(--grad-primary);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 0.85rem;
  box-shadow: var(--glow-primary);
}

.nav {
  margin-inline-start: auto;
}

.nav__list {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--c-text-dim);
  transition: color var(--dur-fast), background-color var(--dur-fast);
}
.nav__link:hover {
  color: #fff;
  background: var(--c-surface-2);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

@media (min-width: 900px) {
  .nav__list { display: flex; }
  .mp-nav-link { display: none; }
}


/* language switcher (header) */
.lang-switcher {
  position: relative;
}

.lang-switcher__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--c-border-strong);
  font-size: var(--text-sm);
  color: var(--c-text-dim);
  background: var(--c-surface);
}
.lang-switcher__toggle:hover {
  color: #fff;
  border-color: var(--c-primary);
}

.lang-switcher__list {
  position: absolute;
  inset-block-start: calc(100% + 0.5rem);
  inset-inline-end: 0;
  min-width: 10rem;
  padding: 0.375rem;
  border-radius: var(--radius-md);
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-strong);
  box-shadow: var(--shadow-3);
  display: none;
  z-index: 20;
}
.lang-switcher__list.is-open { display: block; }

.lang-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--c-text-dim);
  cursor: pointer;
}
.lang-option:hover {
  color: #fff;
  background: var(--c-surface);
}
.lang-option.is-active {
  color: var(--c-primary-bright);
  font-weight: 600;
}

/* hamburger (mobile) */
.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-border-strong);
  background: var(--c-surface);
}
.menu-toggle span {
  display: block;
  width: 1.125rem;
  height: 2px;
  background: var(--c-text);
  position: relative;
  border-radius: 2px;
}
.menu-toggle span::before,
.menu-toggle span::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  width: 100%;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform var(--dur-fast) var(--ease-out);
}
.menu-toggle span::before { transform: translateY(-5px); }
.menu-toggle span::after  { transform: translateY(5px); }

.menu-toggle[aria-expanded="true"] span { background: transparent; }
.menu-toggle[aria-expanded="true"] span::before { transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span::after  { transform: rotate(-45deg); }

@media (min-width: 900px) {
  .menu-toggle { display: none; }
}

/* mobile menu panel (slide down) */
.mobile-menu {
  position: fixed;
  inset-block-start: var(--header-h);
  inset-inline: 0;
  z-index: 55;
  background: rgba(11, 11, 15, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 1.5rem;
  transform: translateY(-16px);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--dur-med) var(--ease-out),
    opacity var(--dur-med) var(--ease-out), visibility var(--dur-med);
}
.mobile-menu.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}
.mobile-menu__link {
  display: block;
  padding: 0.875rem 1rem;
  border-radius: var(--radius-md);
  font-size: var(--text-lg);
  font-weight: 600;
}
.mobile-menu__link:hover {
  background: var(--c-surface-2);
}

.mobile-menu__divider {
  border: none;
  border-block-start: 1px solid var(--c-border);
  margin-block: 0.5rem;
}

.mobile-menu__langs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  padding: 0.5rem 0;
}

.mobile-menu__lang {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--c-border-strong);
  font-size: var(--text-sm);
  color: var(--c-text-dim);
  white-space: nowrap;
  transition: color var(--dur-fast), border-color var(--dur-fast), background var(--dur-fast);
}
.mobile-menu__lang:hover {
  color: #fff;
  border-color: var(--c-primary);
}
.mobile-menu__lang.is-active {
  color: var(--c-primary-bright);
  border-color: var(--c-primary);
  font-weight: 600;
}

.mobile-menu__cta {
  margin-block-start: 0.75rem;
}


/* ==========================================================================
   07. HERO
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block: calc(var(--header-h) + 2rem) 4rem;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-size: cover;
  background-position: center;
}

.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-hero);
}

.hero__inner {
  display: grid;
  gap: 2.5rem;
  align-items: center;
  width: 100%;
}

.hero__content {
  max-width: 38rem;
  position: relative;
  z-index: 1;
}

.hero__title {
  font-size: var(--text-4xl);
  line-height: 1.02;
  margin-block: 1rem 1.25rem;
}

.hero__sub {
  font-size: var(--text-xl);
  color: var(--c-text-dim);
  max-width: 34ch;
  margin-block-end: 2rem;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-block-start: 1.75rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--c-border);
  font-size: var(--text-sm);
  color: var(--c-text-dim);
  backdrop-filter: blur(6px);
}

.badge--dot::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--c-success);
  box-shadow: 0 0 8px var(--c-success);
}

.badge--live::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--c-primary-bright);
  box-shadow: 0 0 8px var(--c-primary-bright);
  animation: pulse 1.8s var(--ease-out) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

/* hero visual / cards */
.hero__visual {
  position: relative;
  display: grid;
  gap: 1rem;
  z-index: 1;
}

.hero__card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
  padding: 1.25rem;
  backdrop-filter: blur(8px);
}

@media (min-width: 900px) {
  .hero__inner { grid-template-columns: 1.05fr 0.95fr; }
  .hero__card { position: relative; }
}


/* ==========================================================================
   08. PROFILE DECK
   ========================================================================== */
.profile-deck {
  position: relative;
}

.profile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-block-end: 2.5rem;
}

.profile-tag {
  padding: 0.55rem 1rem;
  border-radius: var(--radius-full);
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  font-size: var(--text-sm);
  color: var(--c-text-dim);
}

.profile-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 640px) {
  .profile-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 960px) {
  .profile-grid { grid-template-columns: repeat(4, 1fr); }
}

.profile-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-1);
  transition: transform var(--dur-med) var(--ease-out),
    box-shadow var(--dur-med) var(--ease-out);
}
.profile-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-3);
}

.profile-card__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease-out);
}
.profile-card:hover .profile-card__img {
  transform: scale(1.06);
}

.profile-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 25%, rgba(0, 0, 0, 0.75) 75%, rgba(0, 0, 0, 0.95) 100%);
}

.profile-card__info {
  position: absolute;
  inset-inline: 0;
  inset-block-end: 0;
  padding: 1rem;
  z-index: 2;
}

.profile-card__name {
  font-weight: 700;
  font-size: var(--text-lg);
  line-height: 1.2;
  color: #ffffff;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8), 0 1px 3px rgba(0, 0, 0, 0.9);
}

.profile-card__meta {
  font-size: var(--text-sm);
  color: var(--c-text-dim);
  margin-block-start: 0.25rem;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8);
}

.profile-card__online {
  position: absolute;
  inset-block-start: 0.85rem;
  inset-inline-start: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-full);
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
  font-size: var(--text-xs);
  font-weight: 600;
}
.profile-card__online::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--c-success);
}

.profile-card__cta {
  position: absolute;
  inset-inline: 1rem;
  inset-block-end: -0.25rem;
  transform: translateY(120%);
  opacity: 0;
  transition: transform var(--dur-med) var(--ease-out),
    opacity var(--dur-med) var(--ease-out);
}
.profile-card:hover .profile-card__cta {
  transform: translateY(0);
  opacity: 1;
}

.profile-hint {
  margin-block-start: 1.75rem;
  text-align: center;
  font-size: var(--text-sm);
  color: var(--c-text-faint);
}


/* ==========================================================================
   08.5 GALLERY (Real Moments)
   ========================================================================== */
.gallery {
  text-align: center;
}

.gallery__lead {
  font-size: var(--text-lg);
  color: var(--c-text-dim);
  max-width: 46ch;
  margin-inline: auto;
  margin-block-end: 2.5rem;
}

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .gallery__grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 960px) {
  .gallery__grid { grid-template-columns: repeat(4, 1fr); }
}

.gallery__item {
  position: relative;
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  cursor: zoom-in;
  transition: transform var(--dur-med) var(--ease-out),
    box-shadow var(--dur-med) var(--ease-out);
}
.gallery__item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.gallery__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--dur-slow) var(--ease-out);
}
.gallery__item:hover .gallery__img {
  transform: scale(1.05);
}

/* lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-med) var(--ease-out),
    visibility var(--dur-med);
}
.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}
.lightbox__img {
  max-width: min(92vw, 900px);
  max-height: 86vh;
  border-radius: var(--radius-md);
  object-fit: contain;
}
.lightbox__close {
  position: absolute;
  inset-block-start: 1rem;
  inset-inline-end: 1rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 1px solid var(--c-border-strong);
  background: rgba(255, 255, 255, 0.06);
  color: var(--c-text);
  font-size: 1.25rem;
  cursor: pointer;
  display: grid;
  place-items: center;
}
.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.14);
}
.lightbox[hidden] { display: none; }

/* ==========================================================================
   09. SOCIAL
   ========================================================================== */
.social {
  text-align: center;
}

.social__lead {
  font-size: var(--text-lg);
  color: var(--c-text-dim);
  max-width: 46ch;
  margin-inline: auto;
  margin-block-end: 2.5rem;
}

.pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .pillars { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .pillars { grid-template-columns: repeat(4, 1fr); }
}

.pillar {
  padding: 1.75rem 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  text-align: center;
  transition: transform var(--dur-med) var(--ease-out),
    border-color var(--dur-med) var(--ease-out),
    box-shadow var(--dur-med) var(--ease-out);
}
.pillar:hover {
  transform: translateY(-4px);
  border-color: var(--c-primary);
  box-shadow: var(--glow-primary);
}

.pillar__icon {
  width: 3rem;
  height: 3rem;
  margin-inline: auto;
  margin-block-end: 1rem;
  border-radius: var(--radius-md);
  background: var(--grad-primary);
  display: grid;
  place-items: center;
  color: #fff;
}

.pillar__title {
  font-weight: 700;
  font-size: var(--text-lg);
  margin-block-end: 0.5rem;
}

.pillar__desc {
  font-size: var(--text-sm);
  color: var(--c-text-dim);
}

/* ==========================================================================
   10. HOW IT WORKS
   ========================================================================== */
.how {
  text-align: center;
}

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  max-width: 52rem;
  margin-inline: auto;
  margin-block-end: 2.5rem;
  counter-reset: step;
}

@media (min-width: 760px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
}

.step {
  position: relative;
  padding: 1.75rem 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
}

.step__num {
  counter-increment: step;
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-block-end: 1rem;
  border-radius: 50%;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-strong);
  font-weight: 700;
  color: var(--c-primary-bright);
}
.step__num::before {
  content: counter(step, decimal-leading-zero);
}

.step__title {
  font-weight: 700;
  font-size: var(--text-lg);
  margin-block-end: 0.5rem;
}

.step__desc {
  font-size: var(--text-sm);
  color: var(--c-text-dim);
}


/* ==========================================================================
   11. CHAT PREVIEW
   ========================================================================== */
.chat-preview__inner {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .chat-preview__inner { grid-template-columns: 1fr 1fr; }
}

.chat-preview__copy {
  max-width: 34rem;
}

.chat-window {
  max-width: 26rem;
  margin-inline: auto;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-3);
  overflow: hidden;
}

.chat-window__bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1rem;
  border-block-end: 1px solid var(--c-border);
}
.chat-window__dot {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--c-text-faint);
}
.chat-window__dot:first-child { background: var(--c-danger); }
.chat-window__dot:nth-child(2) { background: var(--c-gold); }
.chat-window__dot:nth-child(3) { background: var(--c-success); }

.chat-window__name {
  margin-inline-start: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--text-sm);
  color: var(--c-text-dim);
}
.chat-window__name::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--c-success);
}

.chat-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.chat-msg {
  max-width: 80%;
  padding: 0.65rem 0.9rem;
  border-radius: 1rem;
  font-size: var(--text-sm);
  line-height: 1.45;
}

.chat-msg--in {
  align-self: flex-start;
  background: var(--c-surface-2);
  border-start-start-radius: 0.25rem;
}

.chat-msg--out {
  align-self: flex-end;
  background: var(--grad-primary);
  color: #fff;
  border-end-end-radius: 0.25rem;
}

.chat-typing {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  align-self: flex-start;
  padding: 0.65rem 0.9rem;
  border-radius: 1rem;
  background: var(--c-surface-2);
}
.chat-typing i {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--c-text-faint);
  animation: typing 1.2s infinite ease-in-out;
}
.chat-typing i:nth-child(2) { animation-delay: 0.2s; }
.chat-typing i:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-4px); opacity: 1; }
}

/* ==========================================================================
   12. WHY JOIN
   ========================================================================== */
.why {
  text-align: center;
}

.why__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-block-end: 2.5rem;
}

@media (min-width: 760px) {
  .why__grid { grid-template-columns: repeat(3, 1fr); }
}

.why-card {
  padding: 2rem 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  transition: transform var(--dur-med) var(--ease-out),
    border-color var(--dur-med) var(--ease-out);
}
.why-card:hover {
  transform: translateY(-5px);
  border-color: var(--c-accent);
}

.why-card__icon {
  width: 3.25rem;
  height: 3.25rem;
  margin-inline: auto;
  margin-block-end: 1.25rem;
  border-radius: 50%;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-strong);
  display: grid;
  place-items: center;
  color: var(--c-primary-bright);
}

.why-card__title {
  font-weight: 700;
  font-size: var(--text-lg);
  margin-block-end: 0.5rem;
}

.why-card__desc {
  font-size: var(--text-sm);
  color: var(--c-text-dim);
}


/* ==========================================================================
   13. INTENT
   ========================================================================== */
.intent__inner {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .intent__inner { grid-template-columns: 1fr 1fr; }
}

.intent__copy {
  max-width: 34rem;
}

.intent-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.intent-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.15rem;
  border-radius: var(--radius-full);
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  font-size: var(--text-sm);
  font-weight: 600;
}
.intent-item::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--grad-primary);
}

/* ==========================================================================
   14. PRIVACY / SAFETY
   ========================================================================== */
.privacy__inner {
  display: grid;
  gap: 2rem;
  align-items: start;
}

@media (min-width: 900px) {
  .privacy__inner { grid-template-columns: 1fr 1.1fr; }
}

.justify-card {
  padding: 2.25rem;
  border-radius: var(--radius-xl);
  background: var(--grad-primary);
  color: #fff;
  box-shadow: var(--shadow-3);
  position: relative;
  overflow: hidden;
}
.justify-card::after {
  content: "";
  position: absolute;
  inset: auto -20% -40% auto;
  width: 70%;
  padding-block-end: 70%;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}

.justify-card__title {
  font-size: var(--text-2xl);
  margin-block-end: 0.75rem;
}
.justify-card__lead {
  opacity: 0.92;
  margin-block-end: 1.5rem;
}

.privacy-points {
  display: grid;
  gap: 1rem;
}

.privacy-point {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
}

.privacy-point__icon {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-sm);
  background: var(--c-surface-2);
  display: grid;
  place-items: center;
  color: var(--c-accent);
}

.privacy-point__title {
  font-weight: 700;
  margin-block-end: 0.25rem;
}

.privacy-point__desc {
  font-size: var(--text-sm);
  color: var(--c-text-dim);
}

.notice {
  padding: 1.5rem;
  border-radius: var(--radius-md);
  background: rgba(255, 177, 102, 0.08);
  border: 1px solid rgba(255, 177, 102, 0.25);
  margin-block-start: 1.5rem;
}
.notice__title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  color: var(--c-gold);
  margin-block-end: 0.5rem;
}
.notice__desc {
  font-size: var(--text-sm);
  color: var(--c-text-dim);
}


/* ==========================================================================
   15. FAQ
   ========================================================================== */
.faq {
  max-width: 46rem;
  margin-inline: auto;
}

.faq__heading-wrap {
  text-align: center;
  margin-block-end: 2.5rem;
}

.faq-item {
  border-block-end: 1px solid var(--c-border);
}

.faq-item:last-child {
  border-block-end: none;
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.375rem 0;
  text-align: start;
  font-weight: 600;
  font-size: var(--text-lg);
  color: var(--c-text);
}

.faq-q__icon {
  flex-shrink: 0;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  border: 1px solid var(--c-border-strong);
  display: grid;
  place-items: center;
  color: var(--c-text-dim);
  transition: transform var(--dur-med) var(--ease-out),
    background-color var(--dur-med) var(--ease-out),
    color var(--dur-med) var(--ease-out);
}
.faq-q__icon::before,
.faq-q__icon::after {
  content: "";
  position: absolute;
  width: 0.75rem;
  height: 1.5px;
  background: currentColor;
  border-radius: 1px;
}
.faq-q__icon::after {
  transform: rotate(90deg);
}

.faq-q[aria-expanded="true"] .faq-q__icon {
  transform: rotate(45deg);
  color: var(--c-primary-bright);
  border-color: var(--c-primary);
}

.faq-a {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height var(--dur-slow) var(--ease-out),
    opacity var(--dur-med) var(--ease-out);
}
.faq-a__inner {
  padding-block-end: 1.5rem;
  color: var(--c-text-dim);
  max-width: 56ch;
}

/* ==========================================================================
   16. FINAL CTA
   ========================================================================== */
.final {
  text-align: center;
  position: relative;
  overflow: hidden;
}

.final__inner {
  padding: clamp(3rem, 7vw, 6rem) 1.5rem;
  border-radius: var(--radius-xl);
  background: var(--grad-primary);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-3);
}
.final__inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    60% 90% at 50% 120%,
    rgba(255, 255, 255, 0.25),
    transparent 60%
  );
}

.final__title {
  font-size: var(--text-3xl);
  position: relative;
  margin-block-end: 1rem;
}

.final__sub {
  opacity: 0.92;
  max-width: 46ch;
  margin-inline: auto;
  margin-block-end: 2rem;
  position: relative;
}

.final .btn {
  position: relative;
}


/* ==========================================================================
   17. FOOTER
   ========================================================================== */
.footer {
  padding-block: clamp(3rem, 7vw, 5rem) 2rem;
  border-block-start: 1px solid var(--c-border);
  background: var(--c-bg);
}

.footer__grid {
  display: grid;
  gap: 2rem;
  margin-block-end: 2.5rem;
}

@media (min-width: 760px) {
  .footer__grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer__about {
  color: var(--c-text-dim);
  font-size: var(--text-sm);
  max-width: 32ch;
}

.footer__col-title {
  font-weight: 700;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-text-faint);
  margin-block-end: 1rem;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.footer__link {
  color: var(--c-text-dim);
  font-size: var(--text-sm);
  transition: color var(--dur-fast);
}
.footer__link:hover {
  color: var(--c-primary-bright);
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  justify-content: space-between;
  padding-block-start: 2rem;
  border-block-start: 1px solid var(--c-border);
  font-size: var(--text-sm);
  color: var(--c-text-faint);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__18 {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-strong);
  color: #fff;
  font-weight: 800;
}

.footer__disclaimer {
  margin-block-start: 2rem;
  padding: 1rem;
  border-radius: var(--radius-sm);
  background: var(--c-surface);
  font-size: var(--text-xs);
  color: var(--c-text-faint);
}

/* ==========================================================================
   18. FORMS & INPUTS
   ========================================================================== */
.input {
  width: 100%;
  min-height: 3rem;
  padding: 0.625rem 1rem;
  border-radius: var(--radius-md);
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-strong);
  color: var(--c-text);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.input::placeholder {
  color: var(--c-text-faint);
}
.input:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(231, 81, 143, 0.2);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}
.field__label {
  font-size: var(--text-sm);
  font-weight: 600;
}


/* ==========================================================================
   19. AGE GATE
   ========================================================================== */
.agegate {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-med) var(--ease-out), visibility var(--dur-med);
}

.agegate.is-open {
  opacity: 1;
  visibility: visible;
}

.agegate__card {
  width: 100%;
  max-width: 26rem;
  padding: 2.5rem 2rem;
  border-radius: var(--radius-xl);
  background: var(--c-bg-elev);
  border: 1px solid var(--c-border-strong);
  text-align: center;
  box-shadow: var(--shadow-3);
  transform: translateY(14px) scale(0.98);
  transition: transform var(--dur-med) var(--ease-spring);
}
.agegate.is-open .agegate__card {
  transform: translateY(0) scale(1);
}

.agegate__mark {
  width: 3.5rem;
  height: 3.5rem;
  margin-inline: auto;
  margin-block-end: 1.25rem;
  border-radius: var(--radius-lg);
  background: var(--grad-primary);
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  box-shadow: var(--glow-primary);
}

.agegate__title {
  font-size: var(--text-2xl);
  margin-block-end: 0.75rem;
}

.agegate__desc {
  color: var(--c-text-dim);
  margin-block-end: 1.75rem;
  font-size: var(--text-sm);
}

.agegate__actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.agegate__hint {
  margin-block-start: 1.25rem;
  font-size: var(--text-xs);
  color: var(--c-text-faint);
}

.agegate.is-exit {
  animation: shake 0.4s var(--ease-out);
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}

/* ==========================================================================
   20. COOKIE NOTICE
   ========================================================================== */
.cookie-notice {
  position: fixed;
  inset-inline: 1rem;
  inset-block-end: 1rem;
  z-index: 70;
  max-width: 28rem;
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-strong);
  box-shadow: var(--shadow-3);
  transform: translateY(20px);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--dur-med) var(--ease-out),
    opacity var(--dur-med) var(--ease-out), visibility var(--dur-med);
}
.cookie-notice.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.cookie-notice__title {
  font-weight: 700;
  margin-block-end: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cookie-notice__body {
  font-size: var(--text-sm);
  color: var(--c-text-dim);
  margin-block-end: 1rem;
}

.cookie-notice__actions {
  display: flex;
  gap: 0.5rem;
}

@media (min-width: 640px) {
  .cookie-notice {
    inset-inline: auto;
    inset-inline-end: 1.5rem;
    inset-block-end: 1.5rem;
  }
}

/* ==========================================================================
   21. STICKY CTA
   ========================================================================== */
.sticky-cta {
  position: fixed;
  inset-inline: 1rem;
  inset-block-end: 1rem;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.5rem 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-strong);
  box-shadow: var(--shadow-2);
  transform: translateY(120%);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--dur-med) var(--ease-out),
    opacity var(--dur-med) var(--ease-out), visibility var(--dur-med);
  max-width: calc(100vw - 2rem);
}
.sticky-cta.is-visible {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.sticky-cta__note {
  font-size: var(--text-xs);
  color: var(--c-text-dim);
  white-space: nowrap;
}

.sticky-cta .btn {
  white-space: nowrap;
}

@media (min-width: 640px) {
  .sticky-cta {
    inset-inline: auto;
    inset-inline-end: 1.5rem;
    inset-block-end: 1.5rem;
  }
}


/* ==========================================================================
   22. TOAST
   ========================================================================== */
.toast {
  position: fixed;
  inset-inline: 0;
  inset-block-end: 1.5rem;
  z-index: 80;
  display: flex;
  justify-content: center;
  padding-inline: 1rem;
  pointer-events: none;
}

.toast__msg {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-full);
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-strong);
  box-shadow: var(--shadow-2);
  font-size: var(--text-sm);
  font-weight: 600;
  transform: translateY(24px);
  opacity: 0;
  transition: transform var(--dur-med) var(--ease-spring),
    opacity var(--dur-med) var(--ease-out);
  pointer-events: auto;
}
.toast__msg.is-in {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   23. LANDING / ROOT (language gateway)
   ========================================================================== */
.landing {
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.landing__glow {
  position: absolute;
  inset-inline: 0;
  inset-block-end: -40%;
  height: 70%;
  background: radial-gradient(
    50% 60% at 50% 100%,
    rgba(231, 81, 143, 0.35),
    transparent 70%
  );
  pointer-events: none;
}

.landing__inner {
  position: relative;
  z-index: 1;
  max-width: 32rem;
}

.landing__mark {
  width: 4.5rem;
  height: 4.5rem;
  margin-inline: auto;
  margin-block-end: 1.5rem;
  border-radius: var(--radius-xl);
  background: var(--grad-primary);
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.5rem;
  box-shadow: var(--glow-primary);
}

.landing__title {
  font-size: var(--text-3xl);
  margin-block-end: 0.75rem;
}

.landing__sub {
  color: var(--c-text-dim);
  margin-block-end: 2.5rem;
}

.landing__list {
  display: grid;
  gap: 0.75rem;
  max-width: 22rem;
  margin-inline: auto;
}

.landing-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  color: var(--c-text);
  font-weight: 600;
  transition: transform var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}
.landing-option:hover {
  transform: translateY(-2px);
  border-color: var(--c-primary);
}
.landing-option__code {
  font-size: var(--text-xs);
  color: var(--c-text-faint);
  font-weight: 500;
}

.landing__spinner {
  width: 2rem;
  height: 2rem;
  margin-inline: auto;
  border-radius: 50%;
  border: 2px solid var(--c-border-strong);
  border-inline-start-color: var(--c-primary);
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}


/* ==========================================================================
   24. REVEAL (scroll animation)
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
  will-change: transform, opacity;
}
.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

.reveal--delay-1 { transition-delay: 80ms; }
.reveal--delay-2 { transition-delay: 160ms; }
.reveal--delay-3 { transition-delay: 240ms; }
.reveal--delay-4 { transition-delay: 320ms; }

/* stagger cards */
.stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
}
.stagger.is-in > * { opacity: 1; transform: translateY(0); }
.stagger.is-in > *:nth-child(1) { transition-delay: 60ms; }
.stagger.is-in > *:nth-child(2) { transition-delay: 120ms; }
.stagger.is-in > *:nth-child(3) { transition-delay: 180ms; }
.stagger.is-in > *:nth-child(4) { transition-delay: 240ms; }

/* ==========================================================================
   25. UTILITIES
   ========================================================================== */
.u-hidden { display: none !important; }
.u-mt-1 { margin-block-start: var(--space-4); }
.u-mt-2 { margin-block-start: var(--space-5); }
.u-mt-3 { margin-block-start: var(--space-6); }
.u-center { margin-inline: auto; }
.u-maxw { max-width: 32rem; margin-inline: auto; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   26. REDUCED MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal,
  .stagger > * {
    opacity: 1 !important;
    transform: none !important;
  }
  .badge--live::before,
  .chat-typing i {
    animation: none !important;
  }
}

/* ==========================================================================
   27. RESPONSIVE (fine-grained, 320px -> 1920px)
   ========================================================================== */
@media (min-width: 480px) {
  :root { --header-h: 5rem; }
  .btn-row .btn { flex: 0 1 auto; }
}

@media (min-width: 1200px) {
  .container { padding-inline: 2.5rem; }
}

@media (min-width: 1440px) {
  :root {
    --text-4xl: clamp(2.5rem, 1.6rem + 5vw, 6rem);
  }
}

@media (min-width: 1920px) {
  .container { max-width: 84rem; }
}

/* large screens: tighten generous spacing */
@media (min-width: 1200px) {
  .hero { padding-block: calc(var(--header-h) + 3rem) 5rem; }
}

/* small screens: reduce hero min-height so content fits 320-480 */
@media (max-width: 480px) {
  .hero { min-height: auto; padding-block: calc(var(--header-h) + 2.5rem) 3rem; }
  .hero__title { font-size: var(--text-3xl); }
  .sticky-cta__note { display: none; }
}

@media (max-width: 360px) {
  :root { --header-h: 4.25rem; }
  .nav__link, .btn { font-size: var(--text-sm); }
}

/* ==========================================================================
   Header mobile optimization (hide Join CTA, shrink lang switcher)
   ========================================================================== */
@media (max-width: 899px) {
  .header__inner { gap: 0.75rem; }
  .header__actions { gap: 0.375rem; }

  /* hide the header Join button on mobile (sticky CTA takes over) */
  .header__actions .btn--primary {
    display: none;
  }

  /* shrink lang switcher so it fits beside the hamburger */
  .lang-switcher__toggle {
    padding: 0.3rem 0.5rem;
    gap: 0.25rem;
    font-size: var(--text-sm);
  }
  .lang-switcher__toggle svg {
    width: 14px;
    height: 14px;
  }
  .lang-switcher__toggle span {
    max-width: 4.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

/* ==========================================================================
   28. PRINT
   ========================================================================== */
@media print {
  .header, .footer, .sticky-cta, .cookie-notice, .agegate {
    display: none !important;
  }
  body { background: #fff; color: #000; }
}