:root{
  --primary:#B9473F;
  --secondary:#D89A45;
  --dark:#1E2026;
  --bg:#F7F4EF;
  --bg-2:#EEE9E2;
  --text:#2B2D31;
  --muted:#6F706F;
  --accent:#E06A3B;
  --line:#D8D1C7;
  --paper:#FFFDF9;
  --shadow:0 18px 50px rgba(30,32,38,.09);
  --radius:22px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.75}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
a:hover{color:var(--primary)}
button,input,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 40px),var(--max));margin-inline:auto}
.container.narrow{width:min(calc(100% - 40px),820px)}
.skip-link{position:fixed;left:16px;top:-80px;background:var(--dark);color:#fff;padding:10px 16px;z-index:1000;border-radius:10px}
.skip-link:focus{top:16px}
.site-header{position:sticky;top:0;z-index:100;background:rgba(247,244,239,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(216,209,199,.8)}
.header-inner{display:flex;align-items:center;gap:22px;min-height:78px}
.brand{display:flex;align-items:center;gap:12px;min-width:210px}
.brand img{width:48px;height:48px;object-fit:contain;border-radius:12px;background:#fff}
.brand span{display:grid;line-height:1.25}
.brand strong{font-size:1.15rem;color:var(--dark)}
.brand small{font-size:.78rem;color:var(--muted);margin-top:4px}
.site-nav{display:flex;align-items:center;gap:18px;flex:1;justify-content:center}
.site-nav a{font-size:.94rem;font-weight:650;white-space:nowrap;position:relative;padding:26px 0 23px}
.site-nav a:after{content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:.2s}
.site-nav a:hover:after{transform:scaleX(1)}
.menu-toggle{display:none;border:1px solid var(--line);background:var(--paper);padding:9px 12px;border-radius:10px;color:var(--dark)}
.search-trigger{border:1px solid var(--dark);background:transparent;color:var(--dark);padding:10px 14px;border-radius:999px;font-weight:700;white-space:nowrap}
.search-trigger:hover{background:var(--dark);color:#fff}
.search-modal[hidden]{display:none!important}
.search-modal{position:fixed;inset:0;z-index:500;display:grid;place-items:start center;padding-top:10vh}
.search-backdrop{position:absolute;inset:0;background:rgba(30,32,38,.7)}
.search-dialog{position:relative;width:min(calc(100% - 32px),720px);background:var(--paper);border-radius:24px;padding:34px;box-shadow:var(--shadow)}
.search-close{position:absolute;right:18px;top:14px;border:0;background:transparent;font-size:2rem;line-height:1;color:var(--muted)}
.modal-open{overflow:hidden}
.search-form label{display:block;font-weight:700;margin-bottom:8px}
.search-line{display:flex;gap:10px}
.search-line input{flex:1;min-width:0;border:1px solid var(--line);background:#fff;border-radius:12px;padding:13px 14px;outline:none}
.search-line input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(185,71,63,.12)}
.page-main{min-height:58vh}
.hero{padding:70px 0 52px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
.hero-copy h1{font-size:clamp(2.3rem,5vw,4.7rem);line-height:1.05;letter-spacing:-.04em;margin:10px 0 22px;color:var(--dark)}
.hero-copy .lead{font-size:1.12rem;color:#4b4d51;max-width:700px}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-weight:800;color:var(--primary);font-size:.78rem;margin:0 0 8px}
.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border-radius:12px;font-weight:750;border:1px solid transparent;transition:.2s}
.btn.primary{background:var(--primary);color:#fff}
.btn.primary:hover{background:#9e3933;color:#fff;transform:translateY(-1px)}
.btn.secondary{border-color:var(--line);background:var(--paper);color:var(--dark)}
.btn.secondary:hover{border-color:var(--primary);color:var(--primary)}
.hero-media{position:relative}
.hero-media:before{content:"";position:absolute;inset:-18px 38px 36px -18px;background:var(--secondary);opacity:.18;border-radius:32px;transform:rotate(-2deg)}
.hero-media img{position:relative;width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:30px;box-shadow:var(--shadow)}
.quick-strip{background:var(--dark);color:#fff;padding:18px 0}
.quick-strip .container{display:flex;gap:14px;align-items:center;justify-content:space-between}
.quick-strip p{margin:0;color:#ddd}
.quick-links{display:flex;flex-wrap:wrap;gap:10px}
.quick-links a{border:1px solid rgba(255,255,255,.24);padding:6px 11px;border-radius:999px;font-size:.88rem}
.quick-links a:hover{background:#fff;color:var(--dark)}
.section{padding:68px 0}
.section.compact{padding:46px 0}
.section.tinted{background:var(--bg-2)}
.section.dark{background:var(--dark);color:#fff}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:32px;margin-bottom:30px}
.section-head>div{max-width:760px}
.section-head h2{font-size:clamp(1.8rem,3vw,2.7rem);line-height:1.2;margin:6px 0 10px;color:var(--dark)}
.section.dark .section-head h2{color:#fff}
.section-head p{margin:0;color:var(--muted)}
.section.dark .section-head p{color:#c9c9c9}
.text-link{font-weight:750;color:var(--primary);white-space:nowrap}
.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature-card{background:var(--paper);border:1px solid var(--line);border-radius:18px;overflow:hidden;display:flex;flex-direction:column;min-height:100%;transition:.2s}
.feature-card:hover{transform:translateY(-3px);box-shadow:0 14px 36px rgba(30,32,38,.08)}
.feature-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#e7e1d8}
.feature-card .card-body{padding:19px}
.feature-card h3{margin:0 0 8px;font-size:1.12rem;color:var(--dark)}
.feature-card p{margin:0;color:var(--muted);font-size:.94rem}
.article-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:26px}
.article-list{display:grid;gap:14px}
.article-row{display:grid;grid-template-columns:160px 1fr;gap:18px;padding:16px;background:var(--paper);border:1px solid var(--line);border-radius:16px}
.article-row img{width:160px;height:112px;object-fit:cover;border-radius:12px;background:#e6e0d8}
.article-row h3{font-size:1.08rem;line-height:1.45;margin:2px 0 7px}
.article-row p{margin:0;color:var(--muted);font-size:.92rem}
.meta{display:flex;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:.8rem;margin-bottom:6px}
.meta span{display:inline-flex;align-items:center;gap:4px}
.side-panel{background:var(--dark);color:#fff;border-radius:20px;padding:26px;align-self:start;position:sticky;top:100px}
.side-panel h3{margin-top:0;font-size:1.35rem}
.side-panel p{color:#cecece}
.side-panel a{display:block;padding:12px 0;border-top:1px solid rgba(255,255,255,.13);font-weight:650}
.side-panel a:hover{color:#ffd39a}
.editorial-split{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;align-items:center}
.editorial-split img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:24px;box-shadow:var(--shadow)}
.editorial-copy h2{font-size:clamp(1.9rem,3vw,2.8rem);line-height:1.2;margin:8px 0 16px}
.editorial-copy p{color:#55575b}
.check-list{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:12px}
.check-list li{position:relative;padding-left:30px}
.check-list li:before{content:"✓";position:absolute;left:0;top:0;color:var(--primary);font-weight:900}
.topic-band{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.topic-card{position:relative;min-height:330px;border-radius:24px;overflow:hidden;background:var(--dark);color:#fff}
.topic-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;opacity:.42}
.topic-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 10%,rgba(30,32,38,.9) 95%)}
.topic-card .overlay{position:absolute;z-index:2;left:26px;right:26px;bottom:24px}
.topic-card h3{font-size:1.55rem;line-height:1.25;margin:0 0 8px}
.topic-card p{margin:0;color:#e1e1e1}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:22px}
.step .num{font-size:2.1rem;font-weight:900;color:var(--secondary);line-height:1}
.step h3{margin:12px 0 8px;font-size:1.08rem}
.step p{margin:0;color:var(--muted);font-size:.93rem}
.faq-list{display:grid;gap:12px}
.faq-item{background:var(--paper);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.faq-question{width:100%;display:flex;justify-content:space-between;gap:20px;text-align:left;border:0;background:transparent;padding:18px 20px;color:var(--dark);font-weight:750}
.faq-question:after{content:"+";font-size:1.35rem;color:var(--primary)}
.faq-question[aria-expanded="true"]:after{content:"−"}
.faq-answer{padding:0 20px 20px;color:var(--muted)}
.faq-answer p{margin:0}
.page-hero{padding:54px 0 34px}
.page-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:38px;align-items:center}
.page-hero h1{font-size:clamp(2.15rem,4vw,3.8rem);line-height:1.08;letter-spacing:-.035em;margin:8px 0 16px}
.page-hero .lead{font-size:1.08rem;color:#55585d}
.page-hero img{border-radius:24px;aspect-ratio:16/11;object-fit:cover;box-shadow:var(--shadow)}
.breadcrumb{padding-top:24px}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0;color:var(--muted);font-size:.88rem}
.breadcrumb li:not(:last-child):after{content:"/";margin-left:8px;color:#aaa}
.prose{font-size:1.02rem}
.prose h2{font-size:1.65rem;line-height:1.3;margin:36px 0 12px;color:var(--dark)}
.prose h3{font-size:1.22rem;margin:28px 0 10px}
.prose p{margin:0 0 18px;color:#414348}
.prose ul,.prose ol{padding-left:24px}
.prose li{margin-bottom:10px}
.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:34px;align-items:start}
.content-layout aside{position:sticky;top:100px}
.info-box{background:var(--bg-2);border-left:4px solid var(--primary);padding:18px 20px;border-radius:0 14px 14px 0;margin:24px 0}
.link-panel{border:1px solid var(--line);background:var(--paper);border-radius:16px;padding:20px}
.link-panel h2,.link-panel h3{margin-top:0}
.link-panel a{display:block;padding:10px 0;border-top:1px solid var(--line);font-weight:650}
.link-panel a:first-of-type{border-top:0}
.index-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.index-card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:20px}
.index-card h2,.index-card h3{margin:0 0 8px;font-size:1.18rem}
.index-card p{margin:0;color:var(--muted)}
.index-card .meta{margin-top:12px;margin-bottom:0}
.tag{display:inline-flex;padding:4px 9px;border-radius:999px;background:#f1e4dc;color:#8b3e35;font-size:.78rem;font-weight:750}
.search-results{display:grid;gap:14px;margin-top:28px}
.search-result{background:var(--paper);border:1px solid var(--line);border-radius:15px;padding:20px}
.search-result h2{font-size:1.2rem;margin:0 0 8px}
.search-result p{margin:0;color:var(--muted)}
.search-summary{background:var(--bg-2);border-radius:16px;padding:18px 20px;margin:20px 0}
.error-panel{padding:90px 0;text-align:center}
.error-panel h1{font-size:clamp(2.1rem,5vw,4rem);margin:4px 0 12px}
.error-panel p{color:var(--muted);font-size:1.05rem}
.error-panel .button-row{justify-content:center}
.contact-note{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
.contact-note article{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:20px}
.contact-note h2{font-size:1.1rem;margin:0 0 8px}
.contact-note p{margin:0;color:var(--muted)}
.site-footer{margin-top:70px;background:var(--dark);color:#fff;padding:54px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.3fr .85fr .85fr;gap:48px}
.footer-grid h2{font-size:1rem;margin:0 0 14px;color:#fff}
.footer-grid p{color:#c9c9c9;margin:0;max-width:530px}
.footer-grid a{display:block;color:#d8d8d8;padding:4px 0}
.footer-grid a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.13);padding-top:18px;margin-top:38px;color:#aaa;font-size:.86rem}
.footer-bottom p{margin:0}
.back-top{position:fixed;right:18px;bottom:18px;border:0;background:var(--primary);color:#fff;border-radius:999px;padding:11px 15px;box-shadow:var(--shadow);z-index:90}
@media (max-width:1100px){
  .site-nav{gap:12px}.site-nav a{font-size:.88rem}.brand{min-width:180px}.search-trigger{padding:9px 12px}
  .cards-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .header-inner{min-height:70px;flex-wrap:wrap;padding:10px 0}.brand{flex:1}.menu-toggle{display:inline-flex}.search-trigger{order:2}
  .site-nav{display:none;order:4;width:100%;flex-basis:100%;justify-content:flex-start;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:8px}
  .site-nav.is-open{display:flex}.site-nav a{padding:8px 4px}.site-nav a:after{display:none}
  .hero-grid,.page-hero-grid,.editorial-split,.article-grid,.content-layout{grid-template-columns:1fr}
  .hero-media{max-width:700px}.article-grid .side-panel,.content-layout aside{position:static}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}.footer-grid section:first-child{grid-column:1/-1}
}
@media (max-width:640px){
  .container,.container.narrow{width:min(calc(100% - 26px),var(--max))}
  .hero{padding:46px 0 36px}.hero-copy h1{font-size:2.5rem}.section{padding:50px 0}.section-head{align-items:start;flex-direction:column;gap:12px}
  .cards-4,.topic-band,.steps,.index-list,.contact-note{grid-template-columns:1fr}
  .article-row{grid-template-columns:1fr}.article-row img{width:100%;height:auto;aspect-ratio:16/9}
  .quick-strip .container{align-items:flex-start;flex-direction:column}.search-line{flex-direction:column}.search-dialog{padding:28px 20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}.footer-grid section:first-child{grid-column:auto}.footer-bottom{flex-direction:column}
}
@media (max-width:420px){
  .brand small{display:none}.brand{min-width:0}.brand img{width:42px;height:42px}.search-trigger{font-size:.86rem;padding:8px 10px}
  .hero-copy h1{font-size:2.15rem}.page-hero h1{font-size:2rem}.btn{width:100%}.button-row{width:100%}
}