/* ==========================================================================
   bfzk.com.cn 全站公共样式 common.css
   设计语言：民宿 ins 风 · 米白 / 原木 / 浅绿
   职责：重置、设计变量、顶部信息条、导航、按钮、页脚、表单、表格、滚动动画
   页面私有样式一律写在 css/<页面名>.css，不要修改本文件
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root{
  --cream:#f7f2e7;          /* 米白主色 */
  --cream-2:#f1ead9;        /* 米白深一档 */
  --cream-3:#fbf7ee;        /* 米白浅一档 */
  --line:#e6dcc6;           /* 分隔线/描边 */
  --wood:#b98a5e;           /* 原木 */
  --wood-deep:#8a6844;      /* 原木深 */
  --wood-light:#d9b98c;     /* 原木浅 */
  --green:#8fae8a;          /* 浅绿 */
  --green-deep:#5f8060;     /* 浅绿深 */
  --green-dark:#3f5a45;     /* 深绿墨 */
  --ink:#3a352d;            /* 主文字 */
  --ink-soft:#6e6555;       /* 次级文字 */
  --ink-faint:#9a8f7c;      /* 弱文字 */
  --white:#fffdf6;
  --shadow-sm:0 6px 18px rgba(138,104,68,.10);
  --shadow-md:0 14px 34px rgba(138,104,68,.16);
  --shadow-lg:0 26px 60px rgba(138,104,68,.22);
  --radius:18px;
  --radius-sm:10px;
  --font-serif:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  --header-h:76px;
  --topbar-h:38px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. 重置与基础 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  color:var(--ink);
  background:var(--cream);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .28s var(--ease)}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-family:var(--font-serif);font-weight:700;line-height:1.35;color:var(--ink)}
p{color:var(--ink-soft)}
strong{color:var(--ink)}
em{font-style:normal}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,select,textarea{font-family:inherit;font-size:inherit;color:var(--ink)}
::selection{background:var(--green);color:#fff}

.container{width:100%;max-width:1220px;margin:0 auto;padding:0 26px}
@media (max-width:640px){.container{padding:0 18px}}

/* ---------- 3. 顶部信息条 ---------- */
.topbar{background:var(--green-dark);color:#eef2e7;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;min-height:var(--topbar-h);gap:14px}
.topbar-text{color:#dfe7d8;letter-spacing:.4px}
.topbar-contact{display:flex;gap:10px;align-items:center;color:#f3f6ee}
.topbar-contact a{color:#f3f6ee;border-bottom:1px dashed rgba(243,246,238,.5);padding-bottom:1px}
.topbar-contact a:hover{color:#fff;border-color:#fff}
.topbar-dot{color:var(--wood-light)}
@media (max-width:860px){.topbar-text{display:none}.topbar-inner{justify-content:center}}

/* ---------- 4. 主导航 ---------- */
.site-header{
  position:fixed;top:var(--topbar-h);left:0;right:0;z-index:1000;
  transition:background .35s var(--ease),box-shadow .35s var(--ease),top .35s var(--ease);
}
.site-header .header-inner{display:flex;align-items:center;gap:26px;height:var(--header-h)}
.site-header.scrolled{background:rgba(247,242,231,.96);backdrop-filter:blur(10px);box-shadow:0 8px 30px rgba(138,104,68,.12)}
.site-header.topbar-hidden{top:calc(-1 * var(--topbar-h))}

.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-logo{width:46px;height:46px;border-radius:14px;box-shadow:var(--shadow-sm);object-fit:cover}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-family:var(--font-serif);font-size:19px;letter-spacing:1px}
.brand-text em{font-size:12px;color:var(--wood-deep);letter-spacing:2px;margin-top:2px}

.main-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-list>li{position:relative}
.nav-list>li>a{
  display:flex;align-items:center;gap:5px;
  padding:10px 14px;font-size:15px;font-weight:500;color:var(--ink);
  border-radius:999px;position:relative;
}
.nav-list>li>a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--green);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);
}
.nav-list>li>a:hover::after,.nav-list>li>a.active::after{transform:scaleX(1)}
.nav-list>li>a .caret{width:8px;height:8px;border-right:2px solid var(--ink-soft);border-bottom:2px solid var(--ink-soft);transform:rotate(45deg) translateY(-2px);transition:transform .25s var(--ease)}
.has-drop:hover>a .caret{transform:rotate(225deg) translateY(-1px)}

.drop{
  position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(8px);
  min-width:240px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);padding:12px;opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
}
.has-drop:hover>.drop,.has-drop:focus-within>.drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.drop::before{content:"";position:absolute;top:-8px;left:0;right:0;height:10px}
.drop-group{padding:8px 6px 2px}
.drop-group-title{font-size:12px;color:var(--ink-faint);letter-spacing:2px;padding:2px 10px 6px;display:block;border-bottom:1px dashed var(--line);margin-bottom:6px}
.drop a{display:block;padding:7px 10px;font-size:14px;color:var(--ink-soft);border-radius:8px}
.drop a:hover{background:var(--cream-2);color:var(--green-dark);padding-left:14px}

.nav-cta{margin-left:8px}
.nav-cta>a{color:#fff !important}

.nav-toggle{display:none;flex-direction:column;gap:5px;padding:10px;margin-left:auto}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:transform .3s var(--ease),opacity .3s var(--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)}

/* 移动端抽屉 */
.mobile-nav{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:1100;
  background:var(--white);box-shadow:-18px 0 50px rgba(58,53,45,.18);
  transform:translateX(102%);transition:transform .4s var(--ease);
  overflow-y:auto;padding:22px 20px 40px;display:flex;flex-direction:column;gap:6px;
}
.mobile-nav.open{transform:translateX(0)}
.mobile-nav-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.mobile-nav-head strong{font-family:var(--font-serif);font-size:17px}
.mobile-close{width:36px;height:36px;border-radius:50%;background:var(--cream-2);color:var(--ink);font-size:18px}
.mobile-nav a.m-link{display:block;padding:11px 6px;font-size:15px;font-weight:500;color:var(--ink);border-bottom:1px dashed var(--line)}
.mobile-nav .m-group-title{font-size:12px;color:var(--ink-faint);letter-spacing:2px;padding:12px 6px 4px}
.mobile-nav a.m-sub{display:block;padding:8px 6px 8px 14px;font-size:14px;color:var(--ink-soft);border-left:2px solid var(--line);margin:2px 0 2px 8px}
.mobile-nav .m-cta{margin-top:18px}
.mobile-nav .m-contact{margin-top:16px;padding:14px;border-radius:var(--radius);background:var(--cream-2);font-size:13px;color:var(--ink-soft);display:flex;flex-direction:column;gap:6px}
.mobile-nav .m-contact a{color:var(--green-dark);font-weight:600}
.nav-mask{position:fixed;inset:0;background:rgba(58,53,45,.4);z-index:1050;opacity:0;visibility:hidden;transition:.3s}
.nav-mask.show{opacity:1;visibility:visible}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 30px;border-radius:999px;font-size:15px;font-weight:600;letter-spacing:1px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s,color .3s;
  position:relative;overflow:hidden;white-space:nowrap;
}
.btn:hover{transform:translateY(-3px)}
.btn:active{transform:translateY(-1px)}
.btn-wood{background:var(--wood);color:#fff;box-shadow:0 10px 24px rgba(185,138,94,.35)}
.btn-wood:hover{background:var(--wood-deep);color:#fff;box-shadow:0 16px 34px rgba(138,104,68,.4)}
.btn-green{background:var(--green);color:#fff;box-shadow:0 10px 24px rgba(143,174,138,.4)}
.btn-green:hover{background:var(--green-deep);color:#fff;box-shadow:0 16px 34px rgba(95,128,96,.45)}
.btn-line{border:2px solid var(--wood);color:var(--wood-deep);background:transparent}
.btn-line:hover{background:var(--wood);color:#fff}
.btn-cream{background:var(--cream);color:var(--green-dark);box-shadow:var(--shadow-sm)}
.btn-cream:hover{background:var(--white);color:var(--green-dark);box-shadow:var(--shadow-md)}
.btn-sm{padding:9px 22px;font-size:14px}
.btn-lg{padding:16px 40px;font-size:16px}
.btn .arr{transition:transform .3s var(--ease)}
.btn:hover .arr{transform:translateX(5px)}

/* ---------- 6. 通用段落辅助 ---------- */
.section{padding:92px 0;position:relative}
.section-tight{padding:60px 0}
.section-head{max-width:760px;margin:0 auto 48px;text-align:center}
.kicker{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:3px;
  color:var(--green-deep);font-weight:600;margin-bottom:14px;
}
.kicker::before,.kicker::after{content:"";width:26px;height:1px;background:var(--wood-light)}
.section-title{font-size:clamp(26px,3.4vw,38px);letter-spacing:2px}
.section-title .t-wood{color:var(--wood-deep)}
.section-sub{margin-top:12px;color:var(--ink-soft);font-size:15.5px}
.section-more{text-align:center;margin-top:40px}

/* ---------- 7. 滚动渐入动画 ---------- */
[data-reveal]{opacity:0;transform:translateY(34px);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:var(--rd,0s)}
[data-reveal="left"]{transform:translateX(-40px)}
[data-reveal="right"]{transform:translateX(40px)}
[data-reveal="zoom"]{transform:scale(.92)}
[data-reveal].is-revealed{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  [data-reveal]{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- 8. 表单 ---------- */
.form-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-row.one{grid-template-columns:1fr}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.field-label{font-size:14px;font-weight:600;color:var(--ink)}
.field-label .req{color:#c0604a}
.field input,.field select,.field textarea{
  width:100%;padding:12px 15px;border:1px solid var(--line);border-radius:12px;
  background:var(--cream-3);transition:border-color .25s,box-shadow .25s,background .25s;outline:none;
}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);background:#fff;box-shadow:0 0 0 4px rgba(143,174,138,.18)}
.field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236e6555' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 15px center}
.form-tip{font-size:12.5px;color:var(--ink-faint)}
.check-line{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:var(--ink-soft)}
.check-line input{width:16px;height:16px;margin-top:3px;accent-color:var(--green-deep)}

/* ---------- 9. 表格 ---------- */
.data-table{width:100%;border-collapse:collapse;background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);font-size:14.5px}
.data-table th{background:var(--green-dark);color:#f2f4ec;padding:13px 16px;text-align:left;font-weight:600;letter-spacing:1px}
.data-table td{padding:13px 16px;border-bottom:1px solid var(--line);color:var(--ink-soft)}
.data-table tr:nth-child(even) td{background:var(--cream-3)}
.data-table tr:last-child td{border-bottom:0}

/* ---------- 10. 页脚 ---------- */
.site-footer{background:var(--green-dark);color:#dce4d5;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding:66px 0 46px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand img{width:44px;height:44px;border-radius:12px}
.footer-brand strong{font-family:var(--font-serif);color:#f4f1e6;font-size:19px;letter-spacing:1px}
.footer-about p{font-size:14px;color:#c6d1bd;margin-bottom:14px;line-height:1.9}
.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:14px}
.footer-contact a{color:#f0e8d0;font-weight:600}
.footer-contact a:hover{color:#fff}
.footer-contact .ic-t{color:var(--wood-light);letter-spacing:1px;font-size:12.5px}
.footer-col h4{font-size:16px;color:#f4f1e6;letter-spacing:2px;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:34px;height:2px;background:var(--wood)}
.footer-col ul li{margin-bottom:9px}
.footer-col ul a{font-size:14px;color:#c6d1bd;display:inline-flex;align-items:center;gap:7px}
.footer-col ul a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--wood-light);transition:background .2s}
.footer-col ul a:hover{color:#fff;transform:translateX(3px)}
.footer-col ul a:hover::before{background:#fff}
.footer-bottom{border-top:1px solid rgba(220,228,213,.16);padding:20px 0}
.footer-bottom-inner{display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;justify-content:space-between;font-size:13px;color:#aebba5}
.footer-bottom a{color:#c9d6bf}
.footer-bottom a:hover{color:#fff}
.footer-icp{color:var(--wood-light)}

/* ---------- 11. 常用工具类 ---------- */
.text-center{text-align:center}
.mt-0{margin-top:0}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:28px}.mt-4{margin-top:44px}.mt-5{margin-top:64px}
.mb-2{margin-bottom:16px}.mb-3{margin-bottom:28px}.mb-4{margin-bottom:44px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.t-wood{color:var(--wood-deep)}
.t-green{color:var(--green-deep)}
.bg-cream{background:var(--cream)}
.bg-white{background:var(--white)}
.bg-wood-soft{background:linear-gradient(135deg,var(--cream-2),#f6eee0)}
.grain{position:relative}
.grain::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;mix-blend-mode:multiply;
  background-image:radial-gradient(rgba(138,104,68,.05) 1px,transparent 1px);background-size:22px 22px;
}
.skip-link{position:absolute;left:-999px;top:0;background:var(--green-dark);color:#fff;padding:10px 18px;z-index:2000;border-radius:0 0 10px 0}
.skip-link:focus{left:0}

/* ---------- 12. 响应式 ---------- */
@media (max-width:1080px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:900px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .grid-3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:680px){
  :root{--header-h:66px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding:48px 0 34px}
  .section{padding:64px 0}
  .brand-text strong{font-size:16px}
  .btn{width:100%}
  .btn-sm{width:auto}
}