*,*::before,*::after{box-sizing:border-box}
:root{
  --ink:#2B2724; --ink-2:#4A423A; --bronze:#B08D57; --bronze-d:#8A6C3E;
  --bg:#F7F4EF; --bg-alt:#EDE6DC; --surface:#FFFFFF; --surface-alt:#F1EBE2;
  --line:rgba(43,39,36,.14); --muted:#6E655C;
  --serif:'Iowan Old Style','Palatino Linotype',Palatino,Georgia,'Times New Roman',serif;
  --sans:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  --maxw:1180px; --r:3px;
}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.72;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.18;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2.05rem,4.6vw,3.5rem)}
h2{font-size:clamp(1.5rem,3vw,2.25rem)}
h3{font-size:1.2rem;line-height:1.35}
p{margin:0 0 1.1em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.narrow{max-width:760px}
section{padding:76px 0}
section.tight{padding:52px 0}
.alt{background:var(--bg-alt)}
.eyebrow{font-family:var(--sans);font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--bronze-d);margin:0 0 14px}
.lead{font-size:1.1rem;color:var(--ink-2);max-width:70ch}
.muted{color:var(--muted)}
hr.rule{border:0;border-top:1px solid var(--line);margin:0}

/* ---------- 顶栏 ---------- */
.head{position:sticky;top:0;z-index:50;background:rgba(247,244,239,.93);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;gap:28px;min-height:70px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;margin-right:auto}
.brand .mark{width:36px;height:36px;border:1px solid var(--bronze);color:var(--bronze-d);font-family:var(--serif);font-size:1.15rem;display:grid;place-items:center;flex:none}
.brand b{font-family:var(--serif);font-size:1.13rem;font-weight:600;letter-spacing:.01em;display:block;line-height:1.15}
.brand span{display:block;font-size:.66rem;letter-spacing:.13em;text-transform:uppercase;color:var(--muted)}
.nav{display:flex;align-items:center;gap:26px}
.nav a{text-decoration:none;font-size:.9rem;color:var(--ink-2);padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover{color:var(--ink)}
.nav a.on{color:var(--ink);border-bottom-color:var(--bronze)}
.nav .btn{padding:10px 18px;font-size:.86rem}
.burger{display:none;background:none;border:1px solid var(--line);padding:8px 11px;cursor:pointer;font-size:1rem;color:var(--ink)}
@media(max-width:900px){
  .nav{position:fixed;inset:70px 0 auto 0;background:var(--bg);flex-direction:column;align-items:stretch;gap:0;
       padding:10px 24px 22px;border-bottom:1px solid var(--line);box-shadow:0 16px 30px rgba(0,0,0,.07);display:none}
  .nav.open{display:flex}
  .nav a{padding:13px 0;border-bottom:1px solid var(--line);font-size:1rem}
  .nav .btn{margin-top:16px;text-align:center;border-bottom:0}
  .burger{display:block;margin-left:auto}
}

/* ---------- 按钮 ---------- */
.btn{display:inline-block;padding:13px 26px;font-size:.92rem;font-weight:600;text-decoration:none;border-radius:var(--r);
     border:1px solid transparent;cursor:pointer;font-family:var(--sans);transition:.18s;text-align:center}
.btn-primary{background:var(--bronze);color:#fff;border-color:var(--bronze)}
.btn-primary:hover{background:var(--bronze-d);border-color:var(--bronze-d)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--bg)}
.btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-light:hover{background:#fff;color:var(--ink)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.link-arrow{font-weight:600;text-decoration:none;color:var(--bronze-d);border-bottom:1px solid var(--bronze);padding-bottom:2px}
.link-arrow:hover{color:var(--ink);border-color:var(--ink)}

/* ---------- 首屏 ---------- */
.hero{position:relative;background:#211E1B;color:#fff;overflow:hidden}
.hero-img{position:absolute;inset:0}
.hero-img img{width:100%;height:100%;object-fit:cover;object-position:center 34%;opacity:.62}
.hero-img::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,#211E1B 6%,rgba(33,30,27,.78) 42%,rgba(33,30,27,.26) 100%)}
.hero-in{position:relative;padding:96px 0 88px;max-width:760px}
.hero h1{color:#fff}
.hero p{color:rgba(255,255,255,.85);font-size:1.13rem;max-width:60ch}
.hero .eyebrow{color:var(--bronze)}
.hero-note{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.2);font-size:.88rem;color:rgba(255,255,255,.72)}
.hero-note a{color:var(--bronze)}
.page-head{background:#211E1B;color:#fff;padding:64px 0 56px}
.page-head h1{color:#fff;font-size:clamp(1.85rem,4vw,2.9rem)}
.page-head p{color:rgba(255,255,255,.8);max-width:66ch;margin-bottom:0}
.page-head .eyebrow{color:var(--bronze)}
.crumb{font-size:.8rem;color:rgba(255,255,255,.6);margin:0 0 16px}
.crumb a{color:rgba(255,255,255,.75);text-decoration:none}
.crumb a:hover{color:#fff}

/* ---------- 信任条 ---------- */
.trust{background:var(--ink);color:#fff;padding:26px 0}
.trust ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.trust li{font-size:.86rem;line-height:1.5;color:rgba(255,255,255,.86);padding-left:20px;position:relative}
.trust li::before{content:"";position:absolute;left:0;top:8px;width:7px;height:7px;background:var(--bronze);border-radius:50%}
@media(max-width:820px){.trust ul{grid-template-columns:1fr 1fr;gap:16px}}

/* ---------- 网格与卡片 ---------- */
.grid{display:grid;gap:26px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:940px){.g3,.g4{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.card .thumb{aspect-ratio:4/3;overflow:hidden;background:var(--surface-alt)}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .thumb img{transform:scale(1.04)}
.card .body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}
.card h3{margin-bottom:10px}
.card p{font-size:.94rem;color:var(--ink-2);margin-bottom:16px}
.card .foot{margin-top:auto}
.plain{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:28px}
.plain h3{margin-bottom:8px}
.plain p:last-child{margin-bottom:0}

/* ---------- 图集 ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.gallery figure{margin:0;overflow:hidden;background:var(--surface-alt);aspect-ratio:3/4}
.gallery img{width:100%;height:100%;object-fit:cover}
.gallery .wide{grid-column:span 2;aspect-ratio:3/2}
@media(max-width:760px){.gallery{grid-template-columns:1fr 1fr}.gallery .wide{grid-column:span 2}}
figure{margin:0}
figcaption{font-size:.8rem;color:var(--muted);padding-top:9px}

/* ---------- 步骤 ---------- */
.steps{list-style:none;counter-reset:s;margin:0;padding:0;display:grid;gap:0}
.steps li{counter-increment:s;padding:26px 0 26px 74px;border-top:1px solid var(--line);position:relative}
.steps li:last-child{border-bottom:1px solid var(--line)}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:26px;font-family:var(--serif);
  font-size:1.5rem;color:var(--bronze);width:54px}
.steps h3{margin-bottom:6px}
.steps p{margin-bottom:0;color:var(--ink-2);font-size:.96rem}

/* ---------- 表格 ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);background:var(--surface)}
table.spec{width:100%;border-collapse:collapse;font-size:.94rem}
table.spec th,table.spec td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
table.spec th{background:var(--surface-alt);font-family:var(--sans);font-size:.8rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--ink-2);font-weight:700;white-space:nowrap}
table.spec tr:last-child td{border-bottom:0}
table.spec td:first-child{font-weight:600}

/* ---------- 清单 ---------- */
.ticks{list-style:none;margin:0 0 1.1em;padding:0}
.ticks li{position:relative;padding-left:26px;margin-bottom:11px;color:var(--ink-2)}
.ticks li::before{content:"";position:absolute;left:0;top:.62em;width:9px;height:9px;border-left:1.5px solid var(--bronze);border-bottom:1.5px solid var(--bronze);transform:rotate(-45deg)}

/* ---------- FAQ ---------- */
details.faq{border-top:1px solid var(--line);padding:20px 0}
details.faq:last-of-type{border-bottom:1px solid var(--line)}
details.faq summary{cursor:pointer;font-weight:600;font-size:1.02rem;list-style:none;display:flex;justify-content:space-between;gap:18px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--bronze);font-size:1.4rem;line-height:1;flex:none}
details.faq[open] summary::after{content:"–"}
details.faq .ans{padding-top:12px;color:var(--ink-2);font-size:.96rem}
details.faq .ans p:last-child{margin-bottom:0}

/* ---------- CTA 条 ---------- */
.cta{background:var(--ink);color:#fff;padding:64px 0}
.cta h2{color:#fff;margin-bottom:12px}
.cta p{color:rgba(255,255,255,.82);max-width:62ch}
.cta .btn-row{margin-top:26px}

/* ---------- 表单 ---------- */
.form{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:32px}
.field{margin-bottom:18px}
.field label{display:block;font-size:.83rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-2);margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;font-family:var(--sans);font-size:.97rem;color:var(--ink);
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r);outline:none}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--bronze);background:#fff}
.field textarea{min-height:132px;resize:vertical}
.field .hint{font-size:.8rem;color:var(--muted);margin-top:6px}
.hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}
.form-note{font-size:.84rem;color:var(--muted);margin-top:14px}
.form-msg{margin-top:16px;padding:14px 16px;border-radius:var(--r);font-size:.93rem;display:none}
.form-msg.ok{display:block;background:#EDF4EE;border:1px solid #BFD8C4;color:#245C2E}
.form-msg.err{display:block;background:#FBF0EE;border:1px solid #E3C2BA;color:#8A3A28}

/* ---------- 页脚 ---------- */
.foot{background:#211E1B;color:rgba(255,255,255,.72);padding:60px 0 30px;font-size:.92rem}
.foot a{color:rgba(255,255,255,.86);text-decoration:none}
.foot a:hover{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr;gap:28px}}
.foot h4{color:#fff;font-family:var(--sans);font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px}
.foot ul{list-style:none;margin:0;padding:0}
.foot li{margin-bottom:9px}
.foot .brand b{color:#fff}
.foot .brand span{color:rgba(255,255,255,.55)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:44px;padding-top:22px;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:.83rem;color:rgba(255,255,255,.55)}

/* ---------- 浮窗 ---------- */
.float{position:fixed;right:22px;bottom:22px;z-index:60;display:flex;flex-direction:column;gap:10px}
.float a{background:var(--bronze);color:#fff;text-decoration:none;font-size:.86rem;font-weight:600;
  padding:12px 18px;border-radius:100px;box-shadow:0 8px 24px rgba(0,0,0,.2)}
.float a:hover{background:var(--bronze-d)}
@media(max-width:620px){.float{right:14px;bottom:14px}}

/* ---------- 其它 ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.two-col.top{align-items:start}
@media(max-width:880px){.two-col{grid-template-columns:1fr;gap:32px}}
.timeline{list-style:none;margin:0;padding:0}
.timeline li{border-left:2px solid var(--line);padding:0 0 26px 26px;position:relative}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{content:"";position:absolute;left:-7px;top:6px;width:12px;height:12px;background:var(--bronze);border-radius:50%}
.timeline b{display:block;font-family:var(--serif);font-size:1.05rem}
.post-list{list-style:none;margin:0;padding:0}
.post-list li{border-top:1px solid var(--line);padding:26px 0}
.post-list li:last-child{border-bottom:1px solid var(--line)}
.post-list h3{margin-bottom:6px}
.post-list p{margin-bottom:0;color:var(--ink-2);font-size:.95rem}
.prose{max-width:720px}
.prose h2{margin-top:1.7em}
.prose h3{margin-top:1.5em}
.prose ul,.prose ol{color:var(--ink-2);padding-left:22px}
.prose li{margin-bottom:9px}
.prose blockquote{border-left:3px solid var(--bronze);margin:1.6em 0;padding:2px 0 2px 22px;font-family:var(--serif);font-size:1.13rem;color:var(--ink-2)}
.meta{font-size:.84rem;color:var(--muted);margin-bottom:34px}
.kv{display:grid;grid-template-columns:170px 1fr;gap:10px 22px;font-size:.95rem}
.kv dt{font-weight:700;color:var(--ink)}
.kv dd{margin:0;color:var(--ink-2)}
@media(max-width:560px){.kv{grid-template-columns:1fr;gap:2px 0}.kv dd{margin-bottom:12px}}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:#fff;padding:10px 16px;z-index:99}