/* ============ Variables & Reset ============ */
:root {
  --bg-deep: #050505;
  --bg-card: #0a0a0c;
  --glass-border: rgba(255, 255, 255, 0.06);
  --text-primary: #f0f0f2;
  --text-secondary: #888890;
  --text-muted: #55555a;
  --accent-gold: #c5a059;
  --error: #ff4d4f;
  --font-serif: 'Cormorant Garamond', 'Noto Serif SC', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --container-padding: 40px;
  --gallery-gap: 24px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  background: var(--bg-deep); color: var(--text-primary);
  font-family: var(--font-sans); font-weight: 300; line-height: 1.6;
  overflow-x: hidden; -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color .3s; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; color: inherit; -webkit-tap-highlight-color: transparent; }
.container { max-width: 1400px; margin: 0 auto; padding: 0 var(--container-padding); }

/* ============ 媒体卡片：自适应裁切铺满 ============ */
.placeholder-media {
  position: relative; width: 100%; overflow: hidden;
  background: linear-gradient(135deg, #121215 0%, #050505 100%);
  border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  text-align: center; padding: 20px;
}
.placeholder-media[data-ratio="16:9"] { aspect-ratio: 16 / 9; }
.placeholder-media[data-ratio="9:16"] { aspect-ratio: 9 / 16; }
.placeholder-media[data-ratio="3:4"] { aspect-ratio: 3 / 4; }
.placeholder-media[data-ratio="4:5"] { aspect-ratio: 4 / 5; }
.placeholder-media[data-ratio="1:1"] { aspect-ratio: 1 / 1; }
.placeholder-media[data-ratio="21:9"] { aspect-ratio: 21 / 9; }
.placeholder-media[data-ratio="1200:630"] { aspect-ratio: 1200 / 630; }
.placeholder-media.full-width { width: 100%; }
.placeholder-media img, .placeholder-media video {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: center;
}

/* 有声自动播被拦截时：金色圆形播放按钮 + 呼吸脉冲 */
.placeholder-media.needs-tap { cursor: pointer; }
.placeholder-media.needs-tap::before {
  content: '';
  position: absolute; left: 50%; top: 50%; z-index: 2;
  transform: translate(-50%, -50%);
  width: 76px; height: 76px; border-radius: 50%;
  background: rgba(5, 5, 5, 0.5);
  border: 1px solid rgba(197, 160, 89, 0.45);
  backdrop-filter: blur(6px);
  animation: playPulse 2.4s ease-in-out infinite;
}
.placeholder-media.needs-tap::after {
  content: '';
  position: absolute; left: calc(50% + 3px); top: 50%; z-index: 3;
  transform: translate(-50%, -50%);
  border-left: 22px solid var(--accent-gold);
  border-top: 13px solid transparent;
  border-bottom: 13px solid transparent;
  filter: drop-shadow(0 0 12px rgba(197, 160, 89, 0.55));
}
@keyframes playPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  50% { transform: translate(-50%, -50%) scale(1.07); opacity: 0.8; }
}

/* ============ Header ============ */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
  backdrop-filter: blur(20px); background: rgba(5, 5, 5, 0.6);
  border-bottom: 1px solid var(--glass-border);
}
.header-inner { display: flex; justify-content: space-between; align-items: center; height: 80px; }
.logo { font-size: 18px; font-weight: 500; letter-spacing: 4px; white-space: nowrap; }
.logo span { color: var(--accent-gold); font-weight: 200; margin-left: 4px; }
.main-nav { display: flex; gap: 40px; align-items: center; }
.nav-link { font-size: 14px; letter-spacing: 3px; text-transform: uppercase; color: var(--text-secondary); white-space: nowrap; }
.nav-link:hover { color: var(--text-primary); }
.nav-highlight {
  display: inline-flex; align-items: center; gap: 7px;
  color: var(--accent-gold) !important;
  border: 1px solid rgba(197, 160, 89, 0.35); padding: 9px 20px; border-radius: 2px;
  transition: all .3s;
}
.nav-highlight:hover { background: rgba(197, 160, 89, 0.1); }
.mobile-menu-btn { display: none; flex-direction: column; gap: 6px; z-index: 101; }
.mobile-menu-btn span { display: block; width: 24px; height: 1px; background: var(--text-primary); transition: .3s; }
.mobile-menu {
  position: fixed; inset: 0; background: var(--bg-deep); z-index: 99;
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  transform: translateX(100%); transition: transform .4s var(--transition);
}
.mobile-menu.active { transform: translateX(0); }
.mobile-nav { display: flex; flex-direction: column; gap: 32px; text-align: center; }
.mobile-link { font-family: var(--font-serif); font-size: 28px; font-weight: 300; letter-spacing: 2px; }
.mobile-link.nav-highlight { border: none; padding: 0; font-size: 28px; }

/* ============ Hero（PC：居中 + LOGO 水印垫底 + 指示器钉底） ============ */
.hero { height: 100vh; min-height: 640px; position: relative; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.hero-media { position: absolute; inset: 0; width: 100%; height: 100%; padding: 0; border: none; }
.hero-media span { position: absolute; left: 28px; bottom: 24px; font-size: 10px; letter-spacing: 2px; color: rgba(255,255,255,0.22); }
.hero-overlay { position: absolute; inset: 0; z-index: 1; background: linear-gradient(180deg, rgba(5,5,5,0.45) 0%, rgba(5,5,5,0.92) 100%); }
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 860px; padding: 80px 24px 0; }
.hero-logo {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -52%);
  width: min(760px, 84%);
  opacity: .3; z-index: -1;
  pointer-events: none; user-select: none;
  filter: drop-shadow(0 0 40px rgba(197, 160, 89, 0.15));
}
.hero-tag { display: inline-block; font-size: 11px; letter-spacing: 6px; color: var(--accent-gold); margin-bottom: 32px; text-transform: uppercase; }
.hero-title { font-family: var(--font-serif); font-size: clamp(36px, 5.5vw, 72px); font-weight: 300; letter-spacing: 2px; line-height: 1.25; margin-bottom: 32px; }
.hero-title em { font-style: italic; color: var(--accent-gold); }
.hero-subtitle { font-size: clamp(13px, 1.4vw, 16px); color: var(--text-secondary); line-height: 2; letter-spacing: 1px; }
.scroll-hint { position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 12px; z-index: 2; }
.scroll-hint span { font-size: 10px; letter-spacing: 4px; color: var(--text-muted); }
.scroll-line { width: 1px; height: 40px; background: var(--text-muted); animation: scrollPulse 2s infinite; }
@keyframes scrollPulse { 0%{transform:scaleY(0);transform-origin:top} 50%{transform:scaleY(1);transform-origin:top} 51%{transform-origin:bottom} 100%{transform:scaleY(0);transform-origin:bottom} }

/* ============ 通用 Section ============ */
.section { padding: 160px 0; position: relative; }
.section-tag { display: block; font-size: 11px; letter-spacing: 6px; color: var(--accent-gold); margin-bottom: 24px; text-transform: uppercase; }
.section-header { text-align: center; margin-bottom: 100px; }
.section-header h2 { font-family: var(--font-serif); font-size: clamp(32px, 4vw, 56px); font-weight: 300; letter-spacing: 1px; }

/* ============ 按钮 ============ */
.btn-solid {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 16px 64px; background: var(--accent-gold); color: #0a0a0c;
  font-size: 13px; font-weight: 500; letter-spacing: 4px; text-indent: 4px;
  border: 1px solid var(--accent-gold); border-radius: 2px;
  transition: all .35s var(--transition);
}
.btn-solid:hover { background: transparent; color: var(--accent-gold); }

/* ============ Philosophy / Craft ============ */
.split-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.text-block h2 { font-family: var(--font-serif); font-size: 42px; font-weight: 300; line-height: 1.3; margin-bottom: 32px; }
.text-block .lead { font-size: 16px; color: var(--text-primary); margin-bottom: 24px; line-height: 1.8; }
.text-block p { color: var(--text-secondary); line-height: 1.8; }
.media-block .placeholder-media { height: 600px; aspect-ratio: auto; }
.craft-grid { display: flex; flex-direction: column; gap: 160px; }
.craft-item { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.craft-item.reverse { direction: rtl; }
.craft-item.reverse .craft-info { direction: ltr; }
.craft-info h3 { font-family: var(--font-serif); font-size: 32px; font-weight: 300; margin-bottom: 24px; }
.craft-info p { color: var(--text-secondary); line-height: 1.8; font-size: 15px; }

/* ============ Gallery（已回滚：原生横向滚动 + scroll-snap，与你线上一致） ============ */
.gallery-header { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; margin-bottom: 64px; }
.gallery-heading h2 { font-family: var(--font-serif); font-size: clamp(32px, 4vw, 56px); font-weight: 300; letter-spacing: 1px; }
.gallery-arrows { display: flex; gap: 16px; flex: none; }
.arrow-btn {
  width: 52px; height: 52px; border: 1px solid var(--glass-border); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary); transition: all .3s;
}
.arrow-btn:hover { border-color: var(--accent-gold); color: var(--accent-gold); }
.gallery-track {
  display: flex; gap: var(--gallery-gap); overflow-x: auto;
  scroll-snap-type: x mandatory; padding-bottom: 8px;
  scrollbar-width: none; -ms-overflow-style: none; -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain; /* 【修复①】滑到两端不再把横向滚动串给页面 */
}
.gallery-track::-webkit-scrollbar { display: none; }
.gallery-item { flex: 0 0 calc((100% - var(--gallery-gap) * 2) / 3); scroll-snap-align: start; }
.gallery-caption { padding: 24px 0; }
.gallery-caption h4 { font-family: var(--font-serif); font-size: 24px; font-weight: 300; margin-bottom: 8px; }
.gallery-caption p { font-size: 13px; color: var(--text-muted); letter-spacing: 1px; }
.gallery-cta {
  display: inline-flex; align-items: center; justify-content: center;
  margin-top: 16px; padding: 9px 30px;
  border: 1px solid rgba(197, 160, 89, 0.45); border-radius: 2px;
  font-size: 11px; letter-spacing: 3px; color: var(--accent-gold);
  transition: all .3s;
}
.gallery-cta:hover { background: var(--accent-gold); color: #0a0a0c; }

/* ============ Community（左文 / 右：图在上 + 按钮在下） ============ */
.community { background: linear-gradient(180deg, var(--bg-deep) 0%, #0a0a0c 100%); }
.community-layout { display: grid; grid-template-columns: 1.05fr 1fr; gap: 80px; align-items: center; }
.community-text h2 { font-family: var(--font-serif); font-size: clamp(32px, 3.4vw, 48px); font-weight: 300; margin-bottom: 12px; }
.community-features { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 28px 40px; margin-top: 48px; }
.community-features li { border-left: 1px solid rgba(197, 160, 89, 0.4); padding-left: 16px; }
.community-features b { display: block; font-size: 15px; font-weight: 500; letter-spacing: 3px; margin-bottom: 4px; }
.community-features span { font-size: 12px; color: var(--text-secondary); letter-spacing: 1px; }
.community-cta { width: 100%; margin-top: 24px; }
/* 契约保留类 */
.locked-content { filter: blur(16px) brightness(0.5); user-select: none; pointer-events: none; transition: filter .5s; }
.is-unlocked .locked-content { filter: none; pointer-events: auto; }

/* ============ Footer ============ */
.site-footer { padding: 80px 0 48px; border-top: 1px solid var(--glass-border); }
.footer-inner { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 40px; }
.footer-brand h3 { font-size: 18px; letter-spacing: 4px; margin-bottom: 16px; }
.footer-brand p { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; }
.footer-brand .parent { color: var(--accent-gold); font-size: 12px; letter-spacing: 2px; }
.footer-links { display: flex; flex-direction: column; gap: 16px; align-items: center; text-align: center; }
.footer-links a { font-size: 13px; color: var(--text-secondary); cursor: pointer; }
.footer-links a:hover { color: var(--accent-gold); }
.footer-legal { text-align: right; font-size: 12px; color: var(--text-muted); }
.footer-legal .icp { margin-top: 8px; }
.footer-contact { display: inline-block; margin-top: 14px; font-size: 12px; color: var(--text-secondary); cursor: pointer; }
.footer-contact:hover { color: var(--accent-gold); }

/* ============ Modals & Toast ============ */
.auth-modal, .faq-modal {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(5, 5, 5, 0.9); backdrop-filter: blur(24px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: all .4s;
}
.auth-modal.active, .faq-modal.active { opacity: 1; visibility: visible; }
.auth-card, .faq-card {
  background: var(--bg-card); border: 1px solid var(--glass-border);
  width: 100%; max-width: 440px; padding: 48px; border-radius: 4px;
  position: relative; transform: translateY(20px); transition: transform .4s;
  max-height: 90vh; overflow-y: auto;
  overscroll-behavior: contain; /* 【修复②】弹窗内滚到底/顶，不再带动背后的页面滚动 */
}
.faq-card { max-width: 600px; }
.auth-modal.active .auth-card, .faq-modal.active .faq-card { transform: translateY(0); }
.auth-close { position: absolute; top: 24px; right: 24px; font-size: 24px; color: var(--text-muted); }
/* 【修复②】FAQ 弹窗关闭键：原为卡片内 absolute，会随长内容一起滚走。
   改为 sticky 吸顶——无论滚到哪里都钉在卡片可视区右上角；
   加卡片同色底遮住滚过的文字，并扩大点按热区（移动端好点）。 */
.faq-card .auth-close {
  position: sticky; top: 12px; right: auto;
  display: block; width: -webkit-fit-content; width: fit-content;
  margin: -12px -12px 0 auto;
  padding: 12px; background: var(--bg-card); z-index: 5;
}
.auth-header { text-align: center; margin-bottom: 32px; }
.auth-header h3 { font-family: var(--font-serif); font-size: 28px; font-weight: 300; letter-spacing: 2px; }
.auth-header p { font-size: 12px; color: var(--text-muted); letter-spacing: 4px; margin-top: 8px; }
.auth-tabs { display: flex; gap: 32px; justify-content: center; margin-bottom: 32px; border-bottom: 1px solid var(--glass-border); }
.tab { padding-bottom: 12px; font-size: 12px; letter-spacing: 2px; color: var(--text-muted); border-bottom: 2px solid transparent; transition: all .3s; text-transform: uppercase; }
.tab.active { color: var(--text-primary); border-color: var(--accent-gold); }
.auth-row { margin-bottom: 24px; }
.auth-row label { display: block; font-size: 11px; letter-spacing: 2px; color: var(--text-muted); margin-bottom: 8px; text-transform: uppercase; }
.auth-form input {
  width: 100%; padding: 14px 0; background: transparent; border: none;
  border-bottom: 1px solid var(--glass-border); color: var(--text-primary);
  font-size: 15px; outline: none; transition: border-color .3s;
}
.auth-form input:focus { border-bottom-color: var(--accent-gold); }
.sms-row { display: flex; gap: 24px; align-items: flex-end; }
.sms-row .input-wrapper { flex: 1; }
.sms-btn { padding: 14px 0; white-space: nowrap; font-size: 11px; letter-spacing: 1px; color: var(--accent-gold); border-bottom: 1px solid var(--glass-border); text-transform: uppercase; }
.sms-btn:disabled { color: var(--text-muted); cursor: not-allowed; }
.invite-field { display: none; }
.auth-submit { width: 100%; padding: 16px; background: var(--accent-gold); color: var(--bg-deep); font-weight: 500; font-size: 12px; letter-spacing: 4px; text-transform: uppercase; margin-top: 32px; transition: opacity .3s; }
.faq-section { margin-bottom: 40px; padding-bottom: 40px; border-bottom: 1px solid var(--glass-border); scroll-margin-top: 56px; }
.faq-section:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.faq-section h3 { font-family: var(--font-serif); font-size: 24px; font-weight: 300; margin-bottom: 16px; color: var(--accent-gold); }
.faq-section p { color: var(--text-secondary); line-height: 1.8; font-size: 14px; }
#toast {
  position: fixed; bottom: 40px; left: 50%; transform: translateX(-50%) translateY(100px);
  background: rgba(255, 255, 255, 0.95); color: #111; padding: 14px 28px; border-radius: 2px;
  font-size: 13px; letter-spacing: 1px; box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  opacity: 0; transition: all .4s var(--transition); z-index: 2000; pointer-events: none;
}
#toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ============ 动效 & 响应式 ============ */
.fade-in-up { opacity: 0; transform: translateY(40px); transition: opacity 1s var(--transition), transform 1s var(--transition); }
.fade-in-up.visible { opacity: 1; transform: translateY(0); }
@media (max-width: 1100px) {
  :root { --container-padding: 24px; --gallery-gap: 20px; }
  .main-nav { display: none; }
  .mobile-menu-btn { display: flex; }
  .section { padding: 100px 0; }
  .section-header { margin-bottom: 60px; }
  /* 移动端首屏：顶部锚定，LOGO 紧贴导航下沿 */
  .hero {
    height: auto;
    min-height: 100vh;
    min-height: 100svh;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-bottom: 56px;
  }
  .hero-content {
    width: 100%;
    padding-top: calc(88px + clamp(24px, 6vh, 64px));
  }
  .hero-logo {
    position: static; transform: none; opacity: 1;
    width: min(460px, 86%); margin: 0 auto 36px;
    filter: drop-shadow(0 0 24px rgba(197, 160, 89, 0.2));
  }
  /* SCROLL 指示器：入文档流，紧跟文字，首屏必见 */
  .scroll-hint {
    position: static;
    transform: none;
    margin: clamp(36px, 6vh, 64px) auto 0;
  }
  .hero-overlay {
    background: linear-gradient(180deg, rgba(5,5,5,0.25) 0%, rgba(5,5,5,0.6) 55%, rgba(5,5,5,0.92) 100%);
  }
  .hero-title, .hero-subtitle { text-shadow: 0 2px 24px rgba(0,0,0,0.55); }
  .split-layout, .craft-item, .community-layout { grid-template-columns: 1fr; gap: 48px; }
  .craft-item.reverse { direction: ltr; }
  .text-block h2 { font-size: 32px; }
  .media-block .placeholder-media { height: 420px; }
  .gallery-header { align-items: center; margin-bottom: 40px; }
  /* 【修复①】移动端首滑卡顿的核心修复：
     原先 scrollLeft=0 与最大值处，首/末卡片是被浏览器「夹紧」的非法居中吸附点，
     iOS 的 mandatory scroll-snap 会在此与首次手势打架 → 卡壳/回弹/抖动。
     现给轨道两侧各留 11% 内边距，卡片占满内容区（内容区恰为原 78% 宽，
     卡片视觉宽度完全不变），首/末卡片静止时即为真实居中吸附点，两端不再有非法吸附位。 */
  .gallery-track { padding-left: 11%; padding-right: 11%; }
  .gallery-item { flex: 0 0 100%; scroll-snap-align: center; }
  .community-cta { margin-top: 20px; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; gap: 40px; }
  .footer-legal { text-align: center; }
  .auth-card, .faq-card { padding: 32px 24px; margin: 0 20px; }
}