:root{
  --ivory:#f8f5ef;
  --paper:#fdfbf7;
  --charcoal:#2f2a26;
  --ink:#3d3730;
  --gold:#b08d57;
  --gold-soft:#c9ad82;
  --line:#e8e1d4;
  --muted:#8b8378;
  --shadow:0 20px 60px rgba(47,42,38,.08);
  --serif:"Songti SC","Noto Serif SC",Georgia,"Times New Roman",STSong,serif;
  --sans:"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--ivory);
  line-height:1.7;
  overflow-x:hidden;
}
h1,h2,h3{font-family:var(--serif);font-weight:600;color:var(--charcoal)}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}

/* 通用容器 */
.container{max-width:680px;margin:0 auto;padding:0 24px}
.section{padding:72px 0;position:relative}
.section-eyebrow{
  font-size:12px;letter-spacing:.35em;color:var(--gold);
  text-transform:uppercase;text-align:center;margin-bottom:14px;font-family:var(--sans);
}
.section-title{text-align:center;font-size:26px;margin-bottom:28px;letter-spacing:.06em}

/* 动效 */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s ease}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}

/* 按钮 */
.btn{
  display:inline-block;padding:13px 34px;border-radius:999px;
  font-size:15px;letter-spacing:.08em;transition:all .3s ease;
  border:1px solid var(--gold);text-align:center;
}
.btn-primary{background:var(--gold);color:#fff;box-shadow:0 10px 24px rgba(176,141,87,.3)}
.btn-primary:hover{background:var(--charcoal);border-color:var(--charcoal);transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--gold)}
.btn-outline:hover{background:var(--gold);color:#fff}

/* 封面 */
.hero{
  min-height:100svh;display:flex;align-items:center;justify-content:center;
  text-align:center;padding:40px 24px;position:relative;overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;background:
    radial-gradient(circle at 50% 8%,rgba(201,173,130,.20),transparent 55%),
    radial-gradient(circle at 50% 100%,rgba(176,141,87,.10),transparent 50%),
    linear-gradient(180deg,#fdfbf7,#f1ece1);
}
.hero-inner{position:relative;z-index:1;max-width:640px}
.hero-eyebrow{font-size:13px;letter-spacing:.5em;color:var(--gold);margin-bottom:26px}
.hero-names{font-size:clamp(30px,9vw,46px);line-height:1.25;display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap}
.hero-names .amp{color:var(--gold);font-size:.7em;font-style:italic;font-family:var(--serif)}
.hero-title{font-size:16px;letter-spacing:.3em;color:var(--muted);margin:22px 0 10px}
.hero-date{font-family:var(--serif);font-size:20px;color:var(--charcoal);letter-spacing:.05em}
.hero-place{color:var(--muted);margin-top:8px;font-size:15px}
.hero-scroll{display:inline-flex;flex-direction:column;align-items:center;gap:6px;margin-top:52px;color:var(--muted);font-size:13px;letter-spacing:.2em}
.hero-scroll .arrow{animation:bounce 1.6s infinite}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}

/* 邀请信息 */
.invitation{background:var(--paper)}
.invitation-line{text-align:center;font-family:var(--serif);font-size:19px;color:var(--charcoal);line-height:2;margin-bottom:40px}
.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:36px}
.info-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px 20px;text-align:center;box-shadow:var(--shadow)}
.info-icon{font-size:22px;color:var(--gold);display:block;margin-bottom:12px}
.info-card h3{font-size:14px;letter-spacing:.15em;color:var(--muted);font-family:var(--sans);margin-bottom:10px;font-weight:400}
.info-card p{font-family:var(--serif);font-size:17px;color:var(--charcoal)}
.info-card .info-addr{font-family:var(--sans);font-size:13px;color:var(--muted);margin-top:6px}
.invitation .btn{display:block;width:max-content;margin:0 auto}

/* 倒计时 */
.countdown-section{background:linear-gradient(180deg,var(--ivory),#f3ede1)}
.countdown{display:flex;justify-content:center;gap:18px}
.cd-box{background:#fff;border:1px solid var(--line);border-radius:14px;width:70px;padding:14px 0;text-align:center;box-shadow:var(--shadow)}
.cd-num{display:block;font-family:var(--serif);font-size:30px;color:var(--gold)}
.cd-label{font-size:12px;color:var(--muted);letter-spacing:.1em}

/* 时间轴 */
.timeline{list-style:none;position:relative;padding-left:8px}
.timeline::before{content:"";position:absolute;left:12px;top:8px;bottom:8px;width:1px;background:var(--line)}
.timeline-item{position:relative;padding:0 0 34px 44px}
.timeline-item::before{content:"";position:absolute;left:8px;top:6px;width:9px;height:9px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px #fff}
.timeline-year{font-family:var(--serif);font-size:22px;color:var(--gold);margin-bottom:4px}
.timeline-body h3{font-size:18px;margin-bottom:6px}
.timeline-body p{color:var(--muted);font-size:15px}

/* 相册 */
.gallery-section{background:var(--paper)}
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.gallery-item{border-radius:12px;overflow:hidden;aspect-ratio:3/4;background:#eee}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.gallery-item.is-wide{grid-column:span 2;aspect-ratio:16/10}
.gallery-hint{text-align:center;color:var(--muted);font-size:13px;margin-top:18px}

/* 地图 */
.map-section{background:#f3ede1}
.map-address{text-align:center;font-family:var(--serif);font-size:18px;color:var(--charcoal);margin-bottom:26px}
.map-section .btn{display:block;width:max-content;margin:0 auto}

/* 留言区 */
.guestbook-section{background:var(--paper)}
.guestbook-title{font-size:16px;color:var(--charcoal);margin-bottom:22px;text-align:center;letter-spacing:.06em}
.guestbook-count{color:var(--gold);font-size:14px}
.guestbook-list{list-style:none;display:flex;flex-direction:column;gap:18px;margin:18px 0 36px}
.guestbook-item{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px}
.guestbook-avatar{flex:none;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--gold),var(--gold-soft));color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-family:var(--serif)}
.guestbook-main{flex:1;min-width:0}
.guestbook-meta{display:flex;justify-content:space-between;align-items:baseline;gap:10px}
.guestbook-name{font-weight:600;color:var(--charcoal);font-size:15px}
.guestbook-time{font-size:12px;color:var(--muted)}
.guestbook-text{margin-top:6px;font-size:15px;color:var(--ink);word-break:break-word}

/* AI 审核提示 */
.review-pending,.review-result{
  text-align:center;font-size:14px;color:var(--muted);
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:16px;margin-bottom:18px;letter-spacing:.05em;
}
.review-pending::before{
  content:"";display:inline-block;width:10px;height:10px;border-radius:50%;
  background:var(--gold);margin-right:8px;vertical-align:baseline;
  animation:pulse 1.2s ease-in-out infinite;
}
.review-result{color:#b3564d}
@keyframes pulse{0%,100%{opacity:.35;transform:scale(.85)}50%{opacity:1;transform:scale(1.1)}}

/* 留言表单 */
.guestbook-form{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px 22px;box-shadow:var(--shadow)}
.guestbook-form-title{text-align:center;font-size:18px;margin-bottom:24px}
.form-row{margin-bottom:20px}
.form-label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;letter-spacing:.05em}
.form-input,.form-select,.form-textarea{
  width:100%;border:1px solid var(--line);border-radius:10px;padding:12px 14px;
  font-size:15px;font-family:var(--sans);background:var(--ivory);color:var(--ink);
  transition:border-color .2s;
}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--gold)}
.form-textarea{resize:vertical}
.captcha-box{display:flex;gap:12px;align-items:center}
.captcha-question{
  flex:none;font-size:17px;font-family:var(--serif);color:var(--charcoal);
  border:1px solid var(--line);border-radius:10px;background:var(--ivory);
  padding:10px 16px;min-width:110px;text-align:center;letter-spacing:.04em;
}
.captcha-input{max-width:120px;text-align:center}
.form-error{color:#b3564d;font-size:13px;margin-top:8px}
.btn-submit{display:block;width:100%}

/* 页脚 */
.wedding-footer{text-align:center;padding:46px 24px 70px;color:var(--muted);font-size:14px;background:radial-gradient(circle at 50% 100%,rgba(176,141,87,.08),transparent 60%)}

/* 音乐按钮 */
.music-toggle{
  position:fixed;right:18px;bottom:20px;z-index:50;width:52px;height:52px;border-radius:50%;
  background:rgba(255,255,255,.9);border:1px solid var(--line);box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:center;color:var(--gold);font-size:22px;
  backdrop-filter:blur(6px);transition:transform .2s;
}
.music-toggle:hover{transform:scale(1.06)}
.music-toggle.playing .music-icon{animation:spin 6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

@media (max-width:400px){
  .gallery{grid-template-columns:1fr}
  .gallery-item.is-wide{grid-column:span 1}
}

/* ============ 顶部导航 ============ */
.site-nav{
  position:sticky;top:0;z-index:60;background:rgba(248,245,239,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
}
.site-nav-inner{
  max-width:680px;margin:0 auto;display:flex;justify-content:space-between;
  padding:0 16px;
}
.site-nav-link{
  flex:1;text-align:center;padding:14px 4px 12px;font-size:14px;letter-spacing:.06em;
  color:var(--muted);border-bottom:2px solid transparent;transition:all .2s;
}
.site-nav-link:hover{color:var(--charcoal)}
.site-nav-link.is-active{color:var(--gold);border-bottom-color:var(--gold);font-weight:600}

/* ============ 邀请函：信样式 ============ */
.letter-page{
  padding:36px 18px 60px;display:flex;flex-direction:column;align-items:center;
  background:
    radial-gradient(circle at 50% 0%,rgba(201,173,130,.16),transparent 55%),
    linear-gradient(180deg,#f3ece0,#efe7d6);
}
.letter{
  width:100%;max-width:560px;background:#fffdf8;border-radius:4px;padding:44px 36px 40px;
  box-shadow:0 24px 64px rgba(96,72,32,.18),0 3px 10px rgba(96,72,32,.08);
  position:relative;
  /* 信纸横线 */
  background-image:
    linear-gradient(rgba(176,141,87,.10) 1px, transparent 1px),
    linear-gradient(#fffdf8,#fffdf8);
  background-size:100% 34px;background-position:0 66px;
}
.letter::before,.letter::after{content:"";position:absolute;top:0;height:100%;width:14px}
.letter::before{left:0;border-right:1px solid rgba(181,87,74,.28)}
.letter::after{right:0;border-left:1px solid rgba(181,87,74,.28)}
.letter-head{border-bottom:1px solid var(--line);padding-bottom:18px;text-align:center}
.letter-greeting{font-size:13px;color:var(--muted);letter-spacing:.2em;margin-bottom:10px}
.letter-title{font-size:26px;color:#b0523f;letter-spacing:.14em;margin-bottom:14px}
.letter-couple{display:flex;align-items:center;justify-content:center;gap:12px;font-family:var(--serif);font-size:21px;color:var(--charcoal)}
.letter-couple .x{color:var(--gold);font-size:.7em;font-style:italic}
.letter-body{padding:22px 0 8px;line-height:2.1}
.letter-p{font-family:var(--serif);font-size:17px;color:var(--ink);text-align:center;margin-bottom:16px}
.letter-info{background:rgba(201,173,130,.08);border-radius:10px;padding:14px 16px;margin:20px 0 6px}
.letter-info p{font-size:15px;color:var(--charcoal);display:flex;gap:10px;align-items:baseline;margin-bottom:4px}
.letter-info .li{flex:none;font-size:12px;color:var(--gold);letter-spacing:.15em;border:1px solid rgba(176,141,87,.4);border-radius:999px;padding:1px 8px}
.letter-info em{color:var(--gold);font-style:normal;margin:0 4px}
.letter-addr{font-size:13px !important;color:var(--muted) !important;margin-left:4px}
.letter-sign{text-align:right;margin-top:26px;font-family:var(--serif);color:var(--charcoal)}
.letter-sign p{margin-bottom:4px}
.letter-sign .sign-names{font-size:19px;letter-spacing:.08em;color:#b0523f;margin-top:10px}
.letter-sign .sign-date{font-size:13px;color:var(--muted)}
.letter-map{width:100%;max-width:560px;text-align:center;margin-top:22px}
.letter-map .btn{display:inline-block}

/* ============ 相册 ============ */
.album-page,.letter-select-page,.guestbook-page{padding:36px 0 60px;min-height:60vh}
.album-head,.letter-select-head,.guestbook-head{text-align:center;margin-bottom:28px}
.album-title,.letter-title-sm,.guestbook-title-sm{font-size:26px;letter-spacing:.12em;margin-bottom:10px}
.album-sub,.letter-sub,.guestbook-sub{color:var(--muted);font-size:14px}
.album-empty{text-align:center;color:var(--muted);padding:60px 0}
.albums{display:flex;flex-direction:column;gap:16px;max-width:680px;margin:0 auto;padding:0 16px}
.album-group{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.album-toggle{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  background:transparent;border:none;padding:16px 20px;font-size:16px;color:var(--charcoal);
  font-family:var(--serif);letter-spacing:.05em;
}
.album-toggle-chevron{color:var(--gold);font-size:22px;font-weight:300;transition:transform .3s}
.album-group.is-open .album-toggle-chevron{transform:rotate(45deg)}
.album-body{max-height:0;overflow:hidden;transition:max-height .5s ease}
.album-group.is-open .album-body{max-height:3000px}
.album-body .gallery{padding:4px 16px 18px}

/* ============ 给亲友的信 ============ */
.letter-select-page{max-width:680px;margin:0 auto;padding:36px 20px 60px}
.letter-tabs{display:flex;gap:10px;margin:0 auto 26px;max-width:560px}
.letter-tab{
  flex:1;padding:12px 10px;border:1px solid var(--line);border-radius:999px;background:#fff;
  font-size:14px;color:var(--muted);transition:all .2s;font-family:inherit;
}
.letter-tab:hover{border-color:var(--gold);color:var(--charcoal)}
.letter-tab.is-active{background:var(--gold);border-color:var(--gold);color:#fff;font-weight:600}
.letter-content{display:none;background:#fffdf8;border:1px solid var(--line);border-radius:10px;padding:28px 26px;
  box-shadow:var(--shadow);line-height:2.1;font-family:var(--serif);font-size:16px;color:var(--ink)}
.letter-content.is-visible{display:block}
.letter-paragraph{margin-bottom:16px;white-space:normal}
.letter-sender{text-align:right;color:var(--gold);margin-top:22px}

/* ============ 留言版页头 ============ */
.guestbook-page{max-width:680px;margin:0 auto;padding:36px 20px 60px}
.guestbook-box .guestbook-form{box-shadow:var(--shadow)}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============ 我们的故事（文章形式） ============ */
.story-page{max-width:680px;margin:0 auto;padding:36px 20px 60px}
.story-head{text-align:center;margin-bottom:32px}
.story-title{font-size:26px;letter-spacing:.12em;margin-bottom:10px}
.story-sub{color:var(--muted);font-size:14px}
.story-empty{text-align:center;color:var(--muted);padding:60px 0}
.stories{display:flex;flex-direction:column;gap:22px}
.story-article{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:30px 24px;box-shadow:var(--shadow);position:relative;
}
.story-index{
  position:absolute;top:-14px;left:20px;background:var(--gold);color:#fff;
  font-family:var(--serif);font-size:14px;letter-spacing:.08em;
  padding:4px 12px;border-radius:999px;
}
.story-article-title{font-size:20px;margin:6px 0 14px;letter-spacing:.05em;color:var(--charcoal)}
.story-article-body p{color:var(--ink);font-size:15px;line-height:2.1;margin-bottom:10px;text-align:justify}
.story-article-body p:last-child{margin-bottom:0}