/* ============================================================
   lshu.cn 全站共享基础样式 base.css
   民宿潮流风：浅绿 + 原木 + 米白 | 上下对撞对称 + 锯齿线
   页面专属样式一律写在 css/<页面名>.css 中，类名带页面前缀
   ============================================================ */

/* ---------- 重置 ---------- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--ink);background:var(--paper);line-height:1.75;
  opacity:0;transition:opacity .5s ease .05s;
}
body.page-loaded{opacity:1}
img{max-width:100%;display:block;height:auto}
a{text-decoration:none;color:inherit;transition:color .25s ease}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit;font-size:1rem}

/* ---------- 设计变量 ---------- */
:root{
  --g-deep:#3E7C5B;--g:#5F9E77;--g-mid:#8FBF9F;--g-soft:#C5E0CE;--g-mist:#EFF6F0;
  --w-deep:#7A5A36;--w:#B08A5D;--w-soft:#E6D2B4;--w-mist:#F7EFE1;
  --cream:#FAF7EF;--paper:#FFFDF6;--ink:#2F352C;--ink-soft:#5E6658;--line:#E4E8DC;
  --radius-s:8px;--radius-m:14px;--radius-l:22px;
  --shadow-s:0 2px 10px rgba(47,53,44,.06);
  --shadow-m:0 10px 30px rgba(47,53,44,.10);
  --shadow-l:0 18px 50px rgba(47,53,44,.14);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}

/* ---------- 版面 ---------- */
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:92px 0;position:relative}

/* ---------- 标题 / 标签 ---------- */
.sec-head{max-width:640px;margin-bottom:48px}
.sec-head .sec-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--g-deep);font-size:.85rem;letter-spacing:2px;margin-bottom:10px}
.sec-head .sec-kicker::before{content:"";width:26px;height:2px;background:var(--w)}
.sec-head h2{font-size:2rem;line-height:1.35;color:var(--ink)}
.sec-head p{color:var(--ink-soft);margin-top:10px}
.tag{display:inline-block;padding:4px 14px;border-radius:99px;background:var(--g-mist);color:var(--g-deep);font-size:.82rem}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:99px;font-weight:600;font-size:.95rem;transition:transform .25s ease,box-shadow .25s ease,background .25s ease;border:1px solid transparent}
.btn-primary{background:var(--g-deep);color:#fff;box-shadow:var(--shadow-s)}
.btn-primary:hover{background:var(--g);transform:translateY(-3px);box-shadow:var(--shadow-m)}
.btn-wood{background:var(--w);color:#fff}
.btn-wood:hover{background:var(--w-deep);transform:translateY(-3px);box-shadow:var(--shadow-m)}
.btn-line{border-color:var(--g-mid);color:var(--g-deep);background:transparent}
.btn-line:hover{background:var(--g-mist);transform:translateY(-3px)}

/* ---------- 锯齿线分割 ---------- */
.zig-band{height:34px;background:var(--g-mist);clip-path:polygon(0 0,100% 0,100% 55%,50% 100%,0 55%)}
.zig-band.zig-cream{background:var(--cream)}
.zig-band.zig-wood{background:var(--w-mist)}
.zig-a{clip-path:polygon(0 0,100% 0,100% 72%,0 100%)}
.zig-b{clip-path:polygon(0 28%,100% 0,100% 100%,0 100%)}

/* ---------- 滚动渐入动画 ---------- */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s cubic-bezier(.22,.61,.36,1),transform .8s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
.reveal-left{opacity:0;transform:translateX(-40px);transition:opacity .8s ease,transform .8s ease}
.reveal-right{opacity:0;transform:translateX(40px);transition:opacity .8s ease,transform .8s ease}
.reveal-left.in,.reveal-right.in{opacity:1;transform:none}

/* ---------- 顶部固定导航 ---------- */
.site-nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,253,246,.92);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:background .35s ease,border-color .35s ease,box-shadow .35s ease}
.site-nav.scrolled{background:rgba(255,253,246,.97);border-bottom-color:var(--line);box-shadow:0 4px 24px rgba(47,53,44,.08)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:70px}
.nav-brand{display:flex;align-items:center;gap:10px}
.nav-brand img{border-radius:10px}
.brand-name{font-weight:700;color:var(--ink);font-size:1.02rem}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{padding:8px 13px;border-radius:99px;font-size:.93rem;color:var(--ink-soft);transition:background .25s ease,color .25s ease}
.nav-link:hover{color:var(--g-deep);background:var(--g-mist)}
.nav-link.active{color:var(--g-deep);background:var(--g-mist);font-weight:600}
.nav-btn{margin-left:8px;padding:9px 20px;border-radius:99px;background:var(--g-deep);color:#fff;font-size:.9rem;font-weight:600;transition:background .25s ease,transform .25s ease}
.nav-btn:hover{background:var(--g);transform:translateY(-2px)}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:transform .3s ease,opacity .3s ease}
.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)}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--ink);color:#cfd6c9;margin-top:0}
.foot-grid{max-width:1200px;margin:0 auto;padding:64px 24px 40px;display:grid;grid-template-columns:1.4fr 1fr 1.1fr;gap:48px}
.foot-brand img{border-radius:10px;margin-bottom:14px}
.foot-brand p{font-size:.92rem;color:#aab3a5;max-width:340px}
.foot-nav h3,.foot-contact h3{color:#fff;font-size:1.02rem;margin-bottom:16px}
.foot-nav a{display:block;padding:5px 0;color:#aab3a5;font-size:.92rem;transition:color .25s ease,padding-left .25s ease}
.foot-nav a:hover{color:var(--g-soft);padding-left:6px}
.foot-contact p{color:#aab3a5;font-size:.92rem;padding:4px 0}
.foot-contact a{color:var(--g-soft)}
.foot-contact a:hover{color:#fff}
.foot-bar{border-top:1px solid rgba(255,255,255,.08);text-align:center;padding:20px 24px;font-size:.82rem;color:#8f988b}
.foot-bar p{padding:2px 0}

/* ---------- 表单（预约/预审等共用交互样式，外观由页面 CSS 定制） ---------- */
.js-form .form-field{margin-bottom:16px}
.js-form label{display:block;font-size:.9rem;margin-bottom:6px;color:var(--ink-soft)}
.js-form input,.js-form select,.js-form textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-s);background:#fff;transition:border-color .25s ease,box-shadow .25s ease}
.js-form input:focus,.js-form select:focus,.js-form textarea:focus{outline:none;border-color:var(--g-mid);box-shadow:0 0 0 3px rgba(143,191,159,.25)}
.form-tip{font-size:.8rem;color:var(--ink-soft)}
.form-success{display:none;margin-top:12px;padding:14px 16px;border-radius:var(--radius-s);background:var(--g-mist);color:var(--g-deep)}
.form-success.show{display:block}

/* ---------- FAQ 折叠（交互机制，外观由页面 CSS 定制） ---------- */
.js-faq .faq-a{display:none}
.js-faq .faq-item.open .faq-a{display:block}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:50%;background:var(--g-deep);color:#fff;font-size:1.2rem;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(16px);transition:opacity .3s ease,transform .3s ease,visibility .3s ease;box-shadow:var(--shadow-m);z-index:900}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--g)}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .nav-toggle{display:flex}
  .nav-links{position:fixed;top:70px;left:0;right:0;background:var(--paper);flex-direction:column;align-items:stretch;padding:16px 24px 24px;gap:4px;box-shadow:0 12px 30px rgba(47,53,44,.12);transform:translateY(-130%);transition:transform .35s ease;border-bottom:1px solid var(--line)}
  .nav-links.open{transform:none}
  .nav-link{padding:12px 16px;font-size:1rem}
  .nav-btn{margin:10px 0 0;text-align:center;padding:12px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
}
@media (max-width:600px){
  .container{padding:0 18px}
  .brand-name{font-size:.9rem}
  .foot-grid{grid-template-columns:1fr}
  .sec-head h2{font-size:1.5rem}
}