/* =========================================================
   爱情岛 · 落地页  |  样式表
   设计系统 → 基础 → 组件 → 各章节 → 动画 → 响应式
   ========================================================= */

/* ---------- 设计令牌 ---------- */
:root {
  --rose:        #FF4E6A;
  --rose-deep:   #FF8098;
  --coral:       #FF7A59;
  --peach:       #FFB199;
  --violet:      #B575FF;
  --plum:        #0E060A;
  --ink:         #FDECF0;
  --body:        #C6ABB6;
  --muted:       #93798A;
  --bg:          #140A10;
  --bg-2:        #1B0E15;
  --surface:     #241320;
  --surface-2:   #2E1826;
  --cream:       #140A10;
  --cream-2:     rgba(255,78,106,.12);
  --line:        rgba(255,255,255,.09);
  --white:       #ffffff;

  --g-brand:   linear-gradient(135deg, #FF4E6A 0%, #FF7A59 55%, #FF9E7D 100%);
  --g-brand-2: linear-gradient(135deg, #FF4E6A 0%, #A855F7 100%);
  --g-warm:    linear-gradient(135deg, rgba(255,78,106,.16), rgba(168,85,247,.16));

  --shadow-sm: 0 2px 10px rgba(0, 0, 0, .35);
  --shadow:    0 14px 34px rgba(0, 0, 0, .45);
  --shadow-lg: 0 30px 60px rgba(0, 0, 0, .6);
  --shadow-brand: 0 16px 40px rgba(255, 78, 106, .45);

  --radius:    16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --pill:      999px;

  --maxw: 1180px;
  --font-sans: 'Noto Sans SC', 'Noto Sans JP', 'Noto Sans KR', 'Noto Sans', 'Poppins', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-display: 'Poppins', 'Noto Sans SC', 'Noto Sans JP', 'Noto Sans KR', var(--font-sans);
}

html[data-lang="ja"] body { font-family: 'Noto Sans JP', var(--font-sans); }
html[data-lang="ko"] body { font-family: 'Noto Sans KR', var(--font-sans); }
html[data-lang="en"] body,
html[data-lang="id"] body,
html[data-lang="es"] body { font-family: 'Noto Sans', 'Poppins', var(--font-sans); }

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
h1, h2, h3, h4 { line-height: 1.2; font-weight: 800; letter-spacing: -0.01em; }

/* lucide 图标默认尺寸 */
[data-lucide] { width: 20px; height: 20px; stroke-width: 2; }

/* ---------- 通用工具 ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 24px; }

.section { padding: 96px 0; }

.section__head { max-width: 660px; margin: 0 auto 56px; text-align: center; }
.section__title { font-size: clamp(1.7rem, 3.6vw, 2.7rem); color: var(--ink); }
.section__desc { margin-top: 16px; color: var(--body); font-size: 1.06rem; }
.section__desc--light { color: rgba(255,255,255,.8); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 15px; border-radius: var(--pill);
  background: var(--cream-2); color: var(--rose-deep);
  font-weight: 700; font-size: .85rem; margin-bottom: 18px;
}
.eyebrow i { width: 16px; height: 16px; }
.eyebrow--light { background: rgba(255,255,255,.14); color: #fff; }

.text-gradient {
  background: var(--g-brand);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

.badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: var(--pill);
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  color: var(--rose-deep); font-weight: 700; font-size: .9rem;
}
.badge i { width: 17px; height: 17px; }
.badge--light { background: rgba(255,255,255,.16); color: #fff; box-shadow: none; backdrop-filter: blur(6px); }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px; border-radius: var(--pill);
  font-weight: 700; font-size: 1rem; white-space: nowrap;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
}
.btn i { width: 18px; height: 18px; }
.btn--primary { background: var(--g-brand); color: #fff; box-shadow: var(--shadow-brand); }
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 22px 40px rgba(255,78,106,.46); }
.btn--sm { padding: 10px 20px; font-size: .92rem; }

/* 主 CTA 按钮 */
.store-btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 12px 22px; border-radius: 14px;
  background: #0B0409; color: #fff; border: 1px solid rgba(255,255,255,.12);
  transition: transform .25s ease, box-shadow .25s ease;
  box-shadow: 0 10px 22px rgba(0,0,0,.4);
}
.store-btn--primary { background: var(--g-brand); border-color: transparent; box-shadow: var(--shadow-brand); }
.store-btn:hover { transform: translateY(-3px); box-shadow: 0 16px 30px rgba(51,32,43,.3); }
.store-btn__logo { display: grid; place-items: center; }
.store-btn__logo i { width: 26px; height: 26px; }
.store-btn__text { display: flex; flex-direction: column; line-height: 1.15; text-align: left; }
.store-btn__text small { font-size: .68rem; opacity: .8; }
.store-btn__text strong { font-size: 1.05rem; font-family: var(--font-display); }
.store-btn.is-recommended { outline: 2px solid var(--rose); outline-offset: 3px; }
.store-btn--dark { background: #fff; color: #2A1421; }
.store-btn--dark:hover { box-shadow: 0 16px 30px rgba(0,0,0,.18); }

/* 滚动显现 */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 顶部促销条 ---------- */
.promo-bar {
  position: relative; z-index: 60;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  background: var(--g-brand-2); color: #fff;
  padding: 9px 44px 9px 16px; text-align: center; font-size: .9rem;
}
.promo-bar p { display: inline-flex; align-items: center; gap: 8px; }
.promo-bar i { width: 17px; height: 17px; }
.promo-bar b { font-weight: 800; }
.promo-bar__close {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  color: #fff; display: grid; place-items: center; opacity: .85;
  width: 26px; height: 26px; border-radius: 50%;
}
.promo-bar__close:hover { background: rgba(255,255,255,.2); opacity: 1; }
.promo-bar.is-hidden { display: none; }

/* ---------- 导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(18,9,14,.72);
  border-bottom: 1px solid rgba(255,255,255,.06);
  backdrop-filter: saturate(160%) blur(14px);
  transition: box-shadow .3s ease, background .3s ease, padding .3s ease;
}
.header.scrolled { box-shadow: var(--shadow-sm); background: rgba(14,6,10,.92); }
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; }
.brand__mark {
  width: 40px; height: 40px; border-radius: 11px; overflow: hidden;
  display: grid; place-items: center; box-shadow: var(--shadow-brand);
}
.brand__mark img { width: 100%; height: 100%; object-fit: cover; }
.brand__mark i { width: 21px; height: 21px; fill: #fff; }
.brand__name { font-size: 1.32rem; font-family: var(--font-display); color: var(--ink); }
.brand--light .brand__name { color: #fff; }

.nav { display: flex; gap: 4px; }
.nav__link {
  padding: 8px 16px; border-radius: var(--pill);
  color: var(--body); font-weight: 500; font-size: .96rem;
  transition: color .2s, background .2s;
}
.nav__link:hover { color: var(--rose-deep); background: var(--cream-2); }

.header__actions { display: flex; align-items: center; gap: 12px; }

.lang-switch {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px 6px 12px;
  border-radius: var(--pill);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  color: var(--body);
  transition: border-color .2s, background .2s, color .2s;
}
.lang-switch:hover {
  border-color: rgba(255,78,106,.35);
  background: rgba(255,78,106,.1);
  color: var(--rose-deep);
}
.lang-switch i { width: 16px; height: 16px; flex-shrink: 0; }
.lang-switch select {
  appearance: none; -webkit-appearance: none;
  border: 0; background: transparent;
  color: inherit; font: inherit; font-weight: 600; font-size: .88rem;
  padding-right: 14px; cursor: pointer; outline: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23C6ABB6' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right center;
  min-width: 5.5em;
}
.lang-switch select option { color: #222; background: #fff; }
.lang-switch--block { width: 100%; justify-content: flex-start; padding: 12px 14px; }
.lang-switch--block select { width: 100%; }
.mobile-menu__lang { margin: 8px 0 4px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 40px; height: 40px; justify-content: center; align-items: center; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .3s, opacity .3s; }
.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); }

.mobile-menu {
  display: none; flex-direction: column; gap: 4px;
  padding: 12px 24px 24px; border-top: 1px solid var(--line);
  background: rgba(16,8,12,.98);
}
.mobile-menu.open { display: flex; }
.mobile-menu__link { padding: 13px 8px; font-weight: 600; border-bottom: 1px solid var(--line); color: var(--ink); }
.mobile-menu__cta { margin-top: 14px; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 64px 0 90px; overflow: hidden; }
.hero__bg {
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(60% 55% at 82% 12%, rgba(255,122,89,.32), transparent 62%),
    radial-gradient(52% 52% at 10% 18%, rgba(168,85,247,.26), transparent 62%),
    radial-gradient(85% 70% at 50% 108%, rgba(255,78,106,.22), transparent 60%);
}
.hero__hearts { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.hero__hearts .fh {
  position: absolute; bottom: -30px; color: var(--rose);
  opacity: .5; animation: floatUp linear infinite;
}

.hero__inner {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center;
}
.hero__title { font-size: clamp(2.3rem, 5.4vw, 4rem); color: var(--ink); margin-bottom: 20px; }
.hero__subtitle { font-size: 1.14rem; color: var(--body); max-width: 520px; margin-bottom: 34px; }

.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 30px; }

.hero__trust { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.rating { display: flex; align-items: center; gap: 10px; font-size: .95rem; color: var(--body); }
.rating b { color: var(--ink); }
.rating__stars { display: inline-flex; color: #FFB300; }
.rating__stars i { width: 18px; height: 18px; fill: #FFB300; }
.hero__trust-divider { width: 1px; height: 22px; background: var(--line); }
.hero__trust-text { display: inline-flex; align-items: center; gap: 8px; color: var(--body); font-size: .95rem; }
.hero__trust-text i { width: 18px; height: 18px; color: var(--rose); }
.hero__trust b { color: var(--ink); }

/* 手机样机 */
.hero__device { position: relative; display: grid; place-items: center; }
.phone {
  position: relative; width: 300px; aspect-ratio: 300 / 620;
  background: #1c1116; border-radius: 46px; padding: 12px;
  box-shadow: var(--shadow-lg), inset 0 0 0 2px rgba(255,255,255,.06);
}
.phone--tilt { transform: rotate(3deg); transition: transform .6s cubic-bezier(.2,.7,.2,1); }
.hero__device:hover .phone--tilt { transform: rotate(0deg) translateY(-6px); }
.phone__notch {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  width: 130px; height: 26px; background: #1c1116; border-radius: 0 0 16px 16px; z-index: 3;
}
.phone__notch--sm { width: 96px; height: 20px; }
.phone__screen {
  position: relative; height: 100%; border-radius: 36px; overflow: hidden;
  background: #fff;
  --ink: #33202B; --body: #6E5A64; --muted: #9B8891;
  --rose-deep: #E12D5B; --line: #F2DCD8; --cream: #FFF6F3;
}

/* App 界面：发现/滑卡 */
.app-ui { height: 100%; display: flex; flex-direction: column; background: linear-gradient(180deg,#fff, #fff5f2); }
.app-ui__status { display: flex; justify-content: space-between; align-items: center; padding: 14px 20px 6px; font-size: .72rem; font-weight: 700; color: var(--ink); }
.app-ui__status-icons { display: inline-flex; gap: 5px; }
.app-ui__status-icons i { width: 14px; height: 14px; }
.app-ui__topbar { display: flex; justify-content: space-between; align-items: center; padding: 6px 20px 12px; }
.app-ui__logo { display: inline-flex; align-items: center; gap: 6px; font-weight: 800; color: var(--rose-deep); }
.app-ui__logo i { width: 18px; height: 18px; fill: var(--rose); color: var(--rose); }
.app-ui__filter { color: var(--body); }

.swipe-card { flex: 1; margin: 0 16px 16px; display: flex; flex-direction: column; }
.swipe-card__photo {
  position: relative; flex: 1; border-radius: 22px; overflow: hidden;
  box-shadow: var(--shadow); display: flex; align-items: flex-end;
  background-color: #2a1522;
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  min-height: 280px;
  transition: background-image .35s ease, opacity .35s ease;
}
.swipe-card__photo--1 {
  background-image:
    radial-gradient(60% 45% at 30% 25%, rgba(255,255,255,.55), transparent 60%),
    linear-gradient(160deg, #ffd0c4 0%, #ff9fb3 42%, #c98bd6 100%);
}
.swipe-card__photo::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(20,8,16,.72) 100%);
}
.swipe-card__online, .swipe-card__verify {
  position: absolute; top: 12px; z-index: 2;
  display: inline-flex; align-items: center; gap: 2px;
  padding: 4px 9px; border-radius: var(--pill);
  font-size: .66rem; font-weight: 700; backdrop-filter: blur(4px);
}
.swipe-card__online { left: 12px; background: rgba(46,204,113,.92); color: #fff; }
.swipe-card__online i { width: 14px; height: 14px; }
.swipe-card__verify { right: 12px; background: rgba(255,255,255,.9); color: var(--rose-deep); }
.swipe-card__verify i { width: 13px; height: 13px; }
.swipe-card__info { position: relative; z-index: 2; padding: 16px; color: #fff; }
.swipe-card__info h3 { font-size: 1.25rem; }
.swipe-card__info h3 span { font-weight: 500; opacity: .9; }
.swipe-card__info p { display: inline-flex; align-items: center; gap: 4px; font-size: .76rem; opacity: .92; margin: 3px 0 8px; }
.swipe-card__info p i { width: 13px; height: 13px; }
.swipe-card__tags { display: flex; gap: 6px; }
.swipe-card__tags span { padding: 3px 9px; border-radius: var(--pill); background: rgba(255,255,255,.22); font-size: .66rem; backdrop-filter: blur(4px); }

.swipe-actions { display: flex; justify-content: center; gap: 18px; padding-top: 14px; }
.swipe-actions__btn { width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center; background: #fff; box-shadow: var(--shadow); transition: transform .2s; }
.swipe-actions__btn:hover { transform: translateY(-3px) scale(1.05); }
.swipe-actions__btn--pass { color: #ff5a5f; }
.swipe-actions__btn--star { color: #4aa8ff; width: 38px; height: 38px; }
.swipe-actions__btn--like { color: #fff; background: var(--g-brand); }
.swipe-actions__btn--like i { fill: #fff; }

/* 悬浮气泡 */
.match-pop, .stat-pop {
  position: absolute; z-index: 4;
  display: flex; align-items: center; gap: 10px;
  background: var(--surface); border: 1px solid var(--line); padding: 12px 16px; border-radius: 16px;
  box-shadow: var(--shadow-lg);
}
.match-pop { top: 8%; left: -6%; }
.stat-pop { bottom: 12%; right: -8%; }
.match-pop b, .stat-pop b { display: block; font-size: .9rem; color: var(--ink); }
.match-pop small, .stat-pop small { font-size: .72rem; color: var(--muted); }
.match-pop__icon, .stat-pop__icon { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; color: #fff; }
.match-pop__icon { background: var(--g-brand); }
.match-pop__icon i { fill: #fff; }
.stat-pop__icon { background: var(--g-brand-2); }
.float-a { animation: floatY 4s ease-in-out infinite; }
.float-b { animation: floatY 5s ease-in-out infinite .8s; }

/* ---------- 数据条 ---------- */
.stats { position: relative; margin-top: -20px; }
.stats__grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  background: var(--surface); border-radius: var(--radius-xl); padding: 40px 30px;
  box-shadow: var(--shadow); border: 1px solid var(--line);
}
.stat { text-align: center; }
.stat__num { font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; }
.stat__num span { background: var(--g-brand); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat__label { color: var(--body); font-weight: 500; margin-top: 4px; }

/* ---------- 功能特色 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 32px 28px; box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(255,78,106,.45); }
.feature-card__icon { width: 56px; height: 56px; border-radius: 16px; display: grid; place-items: center; color: #fff; margin-bottom: 18px; box-shadow: var(--shadow-sm); }
.feature-card__icon i { width: 26px; height: 26px; }
.feature-card h3 { font-size: 1.22rem; color: var(--ink); margin-bottom: 8px; }
.feature-card p { color: var(--body); font-size: .98rem; }
.i-rose   { background: linear-gradient(135deg,#FF4E6A,#FF7A8A); }
.i-violet { background: linear-gradient(135deg,#A855F7,#C879FF); }
.i-amber  { background: linear-gradient(135deg,#FF9F43,#FFC24B); }
.i-teal   { background: linear-gradient(135deg,#16C4A5,#3FE0C5); }
.i-sky    { background: linear-gradient(135deg,#3B9DFF,#6FC0FF); }

/* ---------- 使用步骤 ---------- */
.how { background: linear-gradient(180deg, var(--bg), var(--bg-2)); }
.steps { display: flex; align-items: stretch; justify-content: center; gap: 8px; flex-wrap: wrap; }
.step { flex: 1; min-width: 240px; max-width: 320px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 34px 28px; text-align: center; position: relative; box-shadow: var(--shadow-sm); }
.step__num { position: absolute; top: 18px; right: 22px; font-family: var(--font-display); font-size: 2.2rem; font-weight: 800; color: var(--cream-2); }
.step__icon { width: 66px; height: 66px; border-radius: 20px; background: var(--g-warm); color: var(--rose-deep); display: grid; place-items: center; margin: 0 auto 18px; }
.step__icon i { width: 30px; height: 30px; }
.step h3 { font-size: 1.24rem; color: var(--ink); margin-bottom: 8px; }
.step p { color: var(--body); font-size: .96rem; }
.step__arrow { display: grid; place-items: center; color: var(--peach); }
.step__arrow i { width: 32px; height: 32px; }

/* ---------- 界面展示 ---------- */
.showcase { background:
    radial-gradient(50% 60% at 90% 10%, rgba(168,85,247,.16), transparent 60%),
    linear-gradient(180deg, var(--bg-2), var(--bg)); }
.showcase__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.check-list { margin: 24px 0 30px; display: grid; gap: 12px; }
.check-list li { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 500; }
.check-list i { width: 22px; height: 22px; padding: 3px; border-radius: 50%; background: var(--g-brand); color: #fff; stroke-width: 3; flex-shrink: 0; }

.showcase__phones { position: relative; display: grid; place-items: center; min-height: 480px; }
.phone--sm { width: 232px; }
.phone--back { position: absolute; transform: rotate(-8deg) translate(-64px, 10px); z-index: 1; filter: saturate(1.05); }
.phone--front { position: relative; transform: rotate(5deg) translate(58px, -10px); z-index: 2; }

/* 聊天界面 */
.chat-ui { height: 100%; display: flex; flex-direction: column; background: linear-gradient(180deg,#fff,#fff2f4); }
.chat-ui__head { display: flex; align-items: center; gap: 10px; padding: 22px 16px 12px; border-bottom: 1px solid var(--line); }
.chat-ui__avatar { width: 38px; height: 38px; border-radius: 50%; }
.chat-ui__head b { display: flex; align-items: center; gap: 4px; font-size: .92rem; color: var(--ink); }
.chat-ui__head b i { width: 14px; height: 14px; color: var(--rose); }
.chat-ui__head small { color: #2ecc71; font-size: .72rem; }
.chat-ui__body { flex: 1; padding: 16px 14px; display: flex; flex-direction: column; gap: 10px; overflow: hidden; }
.bubble { max-width: 78%; padding: 9px 13px; border-radius: 16px; font-size: .8rem; line-height: 1.5; }
.bubble--in { align-self: flex-start; background: #fff; color: var(--ink); border-bottom-left-radius: 5px; box-shadow: var(--shadow-sm); }
.bubble--out { align-self: flex-end; background: var(--g-brand); color: #fff; border-bottom-right-radius: 5px; }
.chat-ui__input { display: flex; align-items: center; justify-content: space-between; margin: 10px 14px 16px; padding: 10px 14px; background: #fff; border-radius: var(--pill); box-shadow: var(--shadow-sm); color: var(--muted); font-size: .8rem; }
.chat-ui__input i { width: 18px; height: 18px; color: var(--rose); }

/* 发现网格界面 */
.grid-ui { height: 100%; display: flex; flex-direction: column; background: #fff; }
.grid-ui__head { display: flex; align-items: center; justify-content: space-between; padding: 22px 16px 12px; }
.grid-ui__head b { display: inline-flex; align-items: center; gap: 6px; color: var(--rose-deep); }
.grid-ui__head b i { width: 18px; height: 18px; fill: var(--rose); color: var(--rose); }
.grid-ui__head > i { color: var(--body); }
.grid-ui__grid { flex: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 8px 14px; }
.grid-ui__cell { position: relative; border-radius: 14px; overflow: hidden; }
.grid-ui__cell span { position: absolute; right: 6px; bottom: 6px; width: 20px; height: 20px; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--rose-deep); display: grid; place-items: center; }
.grid-ui__cell span i { width: 13px; height: 13px; }
.gc-1 { background: linear-gradient(150deg,#ffd0c4,#ff9fb3); }
.gc-2 { background: linear-gradient(150deg,#c8b6ff,#e0c3fc); }
.gc-3 { background: linear-gradient(150deg,#a1e3d8,#c4f5ea); }
.gc-4 { background: linear-gradient(150deg,#ffe0a3,#ffd08a); }

/* 界面预览 · 20 人轮播 */
.carousel-ui {
  height: 100%; display: flex; flex-direction: column;
  background: linear-gradient(180deg,#fff, #fff5f2);
}
.carousel-ui__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 14px 8px;
}
.carousel-ui__head b {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--rose-deep); font-size: .92rem;
}
.carousel-ui__head b i { width: 16px; height: 16px; fill: var(--rose); color: var(--rose); }
.carousel-ui__head > i { width: 16px; height: 16px; color: var(--body); }
.profile-carousel {
  position: relative; flex: 1; margin: 0 12px;
  border-radius: 18px; overflow: hidden; min-height: 0;
}
.profile-carousel__slide {
  position: absolute; inset: 0;
  opacity: 0; transform: scale(.96) translateY(8px);
  transition: opacity .45s ease, transform .45s ease;
  pointer-events: none;
  display: flex; align-items: flex-end;
  background-size: cover; background-position: center top; background-color: #2a1522;
}
.profile-carousel__slide.is-active {
  opacity: 1; transform: scale(1) translateY(0);
  pointer-events: auto; z-index: 1;
}
.profile-carousel__slide::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 38%, rgba(20,8,16,.75) 100%);
}
.profile-carousel__online,
.profile-carousel__verify {
  position: absolute; top: 10px; z-index: 2;
  display: inline-flex; align-items: center; gap: 2px;
  padding: 3px 8px; border-radius: var(--pill);
  font-size: .58rem; font-weight: 700;
}
.profile-carousel__online { left: 10px; background: rgba(46,204,113,.92); color: #fff; }
.profile-carousel__online i { width: 12px; height: 12px; }
.profile-carousel__verify { right: 10px; background: rgba(255,255,255,.92); color: var(--rose-deep); }
.profile-carousel__verify i { width: 11px; height: 11px; }
.profile-carousel__info { position: relative; z-index: 2; padding: 12px; color: #fff; width: 100%; }
.profile-carousel__info h3 { font-size: 1rem; line-height: 1.2; }
.profile-carousel__info h3 span { font-weight: 500; opacity: .9; font-size: .9em; }
.profile-carousel__info p {
  display: inline-flex; align-items: center; gap: 3px;
  font-size: .66rem; opacity: .92; margin: 2px 0 6px;
}
.profile-carousel__info p i { width: 11px; height: 11px; }
.profile-carousel__tags { display: flex; flex-wrap: wrap; gap: 4px; }
.profile-carousel__tags span {
  padding: 2px 7px; border-radius: var(--pill);
  background: rgba(255,255,255,.22); font-size: .58rem; backdrop-filter: blur(4px);
}
.carousel-ui__pager {
  text-align: center;
  padding: 6px 10px 2px;
  font-size: .68rem;
  font-weight: 700;
  color: var(--rose-deep);
  letter-spacing: .04em;
}
.carousel-ui__nav {
  display: flex; justify-content: space-around;
  padding: 8px 0 14px; border-top: 1px solid var(--line); color: var(--muted);
}
.carousel-ui__nav i { width: 20px; height: 20px; }
.carousel-ui__nav .is-active { color: var(--rose); fill: rgba(255,78,106,.15); }
.chat-ui__avatar {
  background-size: cover; background-position: center;
  background-color: #ff9fb3;
}
.gc-5 { background: linear-gradient(150deg,#a3d8ff,#c7e6ff); }
.gc-6 { background: linear-gradient(150deg,#ffb3c6,#ff8fab); }
.grid-ui__nav { display: flex; justify-content: space-around; padding: 12px 0 18px; border-top: 1px solid var(--line); color: var(--muted); }
.grid-ui__nav i { width: 22px; height: 22px; }
.grid-ui__nav .is-active { color: var(--rose); fill: rgba(255,78,106,.15); }

/* ---------- 真实案例 ---------- */
.story-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.story-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px 28px; box-shadow: var(--shadow-sm); transition: transform .3s, box-shadow .3s; }
.story-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.story-card__stars { display: flex; gap: 2px; color: #FFB300; margin-bottom: 14px; }
.story-card__stars i { width: 18px; height: 18px; fill: #FFB300; }
.story-card blockquote { color: var(--ink); font-size: 1rem; line-height: 1.75; margin-bottom: 20px; }
.story-card figcaption { display: flex; align-items: center; gap: 12px; }
.story-card__avatar { width: 46px; height: 46px; border-radius: 50%; flex-shrink: 0; }
.story-card figcaption b { display: block; color: var(--ink); }
.story-card figcaption small { color: var(--muted); }
.sa-1 { background: linear-gradient(135deg,#ff9fb3,#c98bd6); }
.sa-2 { background: linear-gradient(135deg,#8fd3f4,#84fab0); }
.sa-3 { background: linear-gradient(135deg,#ffd08a,#ff8fab); }
.av-1 { background: linear-gradient(135deg,#ff9fb3,#c98bd6); }

/* ---------- 安全保障 ---------- */
.safety { background: linear-gradient(135deg, #2A1421 0%, #4A1B36 55%, #3A1250 100%); color: #fff; position: relative; overflow: hidden; }
.safety::before { content: ""; position: absolute; inset: 0; background: radial-gradient(50% 60% at 85% 20%, rgba(255,78,106,.25), transparent 60%); pointer-events: none; }
.safety__inner { position: relative; display: grid; grid-template-columns: 1.2fr .8fr; gap: 50px; align-items: center; }
.safety__inner .section__title { color: #fff; }
.safety__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 30px; }
.safety-item { display: flex; gap: 14px; }
.safety-item__icon { width: 46px; height: 46px; border-radius: 14px; background: rgba(255,255,255,.1); color: #FF9E8A; display: grid; place-items: center; flex-shrink: 0; }
.safety-item__icon i { width: 22px; height: 22px; }
.safety-item b { display: block; font-size: 1.02rem; }
.safety-item p { color: rgba(255,255,255,.7); font-size: .9rem; }

.safety__badge { display: grid; place-items: center; text-align: center; }
.shield-visual { position: relative; width: 200px; height: 200px; display: grid; place-items: center; }
.shield-visual > i { width: 92px; height: 92px; color: #fff; stroke-width: 1.5; filter: drop-shadow(0 10px 24px rgba(255,78,106,.5)); z-index: 2; }
.shield-visual__ring { position: absolute; inset: 0; border-radius: 50%; border: 2px solid rgba(255,158,138,.5); animation: pulseRing 3s ease-out infinite; }
.shield-visual__ring--2 { animation-delay: 1.5s; }
.shield-visual__caption { color: rgba(255,255,255,.75); font-size: .92rem; margin-top: 14px; }

/* ---------- 前往约会 CTA ---------- */
.download { background: var(--cream); }
.download__card { position: relative; overflow: hidden; background: var(--g-brand); border-radius: var(--radius-xl); padding: 60px; display: grid; grid-template-columns: 1.3fr .7fr; gap: 40px; align-items: center; box-shadow: var(--shadow-lg); }
.download__hearts { position: absolute; inset: 0; pointer-events: none; }
.download__content { position: relative; z-index: 2; color: #fff; }
.download__content h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin: 16px 0 12px; }
.download__content > p { font-size: 1.08rem; opacity: .92; margin-bottom: 28px; }
.download__cta { display: flex; flex-wrap: wrap; gap: 14px; }
.download__hint { margin-top: 16px; font-size: .9rem; opacity: .9; display: flex; align-items: center; gap: 6px; min-height: 20px; }

.download__qr { position: relative; z-index: 2; background: #fff; border-radius: var(--radius-lg); padding: 22px; text-align: center; box-shadow: var(--shadow); justify-self: end; }
.qr { width: 168px; height: 168px; display: grid; place-items: center; margin: 0 auto 12px; }
.qr img, .qr canvas { border-radius: 8px; }
.download__qr p { display: inline-flex; align-items: center; gap: 6px; font-size: .88rem; color: #6E5A64; font-weight: 600; }
.download__qr p i { width: 16px; height: 16px; color: var(--rose); }

/* ---------- 常见问题 ---------- */
.faq__inner { max-width: 800px; }
.faq__list { display: grid; gap: 14px; }
.faq-item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; }
.faq-item summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; font-weight: 700; color: var(--ink); font-size: 1.05rem; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i { width: 22px; height: 22px; color: var(--rose); flex-shrink: 0; transition: transform .3s; }
.faq-item[open] summary i { transform: rotate(45deg); }
.faq-item__body { padding: 0 24px 20px; color: var(--body); }
.faq-item__body p { animation: fadeIn .4s ease; }

/* ---------- 页脚 ---------- */
.footer { background: var(--plum); color: rgba(255,255,255,.72); padding-top: 64px; }
.footer__inner { display: grid; grid-template-columns: 1.3fr 2fr; gap: 40px; padding-bottom: 48px; }
.footer__slogan { margin: 16px 0 20px; max-width: 260px; }
.footer__social { display: flex; gap: 10px; }
.footer__social a { width: 40px; height: 40px; border-radius: 12px; background: rgba(255,255,255,.08); display: grid; place-items: center; color: #fff; transition: background .25s, transform .25s; }
.footer__social a:hover { background: var(--g-brand); transform: translateY(-3px); }
.footer__cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.footer__col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer__col a { display: block; padding: 6px 0; font-size: .92rem; transition: color .2s; }
.footer__col a:hover { color: var(--rose); }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 22px 0; }
.footer__bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .86rem; }
.footer__meta { display: inline-flex; align-items: center; gap: 8px; }
.age-badge { display: inline-grid; place-items: center; min-width: 34px; height: 22px; padding: 0 6px; border-radius: 6px; background: var(--rose); color: #fff; font-weight: 800; font-size: .74rem; }

/* ---------- 回到顶部 ---------- */
.to-top { position: fixed; right: 24px; bottom: 24px; z-index: 40; width: 48px; height: 48px; border-radius: 50%; background: var(--g-brand); color: #fff; display: grid; place-items: center; box-shadow: var(--shadow-brand); opacity: 0; visibility: hidden; transform: translateY(12px); transition: opacity .3s, transform .3s, visibility .3s; }
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { transform: translateY(-3px); }

/* ---------- 动画 ---------- */
@keyframes floatUp {
  0%   { transform: translateY(0) rotate(0); opacity: 0; }
  10%  { opacity: .6; }
  90%  { opacity: .5; }
  100% { transform: translateY(-108vh) rotate(90deg); opacity: 0; }
}
@keyframes floatY { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
@keyframes pulseRing { 0% { transform: scale(.75); opacity: .9; } 100% { transform: scale(1.25); opacity: 0; } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; gap: 48px; text-align: center; }
  .hero__copy { max-width: 640px; margin-inline: auto; }
  .hero__subtitle { margin-inline: auto; }
  .hero__cta, .hero__trust { justify-content: center; }
  .feature-grid, .story-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase__inner { grid-template-columns: 1fr; gap: 40px; }
  .showcase__copy { text-align: center; }
  .check-list { justify-items: center; }
  .check-list li { justify-content: center; }
  .safety__inner { grid-template-columns: 1fr; text-align: center; }
  .safety__grid { text-align: left; max-width: 560px; margin-inline: auto; }
  .safety__badge { order: -1; }
  .download__card { grid-template-columns: 1fr; text-align: center; }
  .download__cta, .download__hint { justify-content: center; }
  .download__qr { justify-self: center; }
}

@media (max-width: 768px) {
  .section { padding: 68px 0; }
  .nav, .header__actions .btn { display: none; }
  .nav-toggle { display: flex; }
  .lang-switch { padding: 5px 8px 5px 10px; }
  .lang-switch select { font-size: .82rem; min-width: 4.8em; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; padding: 32px 20px; }
  .steps { flex-direction: column; align-items: center; }
  .step { max-width: 420px; width: 100%; }
  .step__arrow { transform: rotate(90deg); }
  .phone--back { transform: rotate(-6deg) translate(-42px, 8px); }
  .phone--front { transform: rotate(4deg) translate(40px, -6px); }
  .footer__inner { grid-template-columns: 1fr; }
  .footer__cols { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .container { padding-inline: 18px; }
  .feature-grid, .story-grid { grid-template-columns: 1fr; }
  .hero__cta { flex-direction: column; }
  .hero__cta .store-btn { justify-content: center; }
  .download__card { padding: 40px 24px; }
  .match-pop { left: -2%; padding: 9px 12px; }
  .stat-pop { right: -2%; padding: 9px 12px; }
  .showcase__phones { transform: scale(.92); }
  .footer__bottom-inner { flex-direction: column; text-align: center; }
}

/* ---------- 无障碍：尊重减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}