/* roulang page: index */
:root{
  --ink:#24211f;
  --ink-soft:#4b4540;
  --muted:#817971;
  --paper:#f6f1e9;
  --paper-deep:#ebe1d3;
  --card:#fffdf9;
  --copper:#a36f43;
  --copper-dark:#805331;
  --stamp:#a84c3d;
  --line:#ded2c3;
  --radius:16px;
  --shadow:0 18px 44px rgba(54,39,26,.09);
  --container:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);font-size:16px;line-height:1.8}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(var(--container),calc(100% - 44px));margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(246,241,233,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.navbar{height:78px;display:flex;align-items:center;gap:36px}
.logo{display:flex;align-items:center;gap:12px;min-width:max-content}
.logo-mark{width:38px;height:38px;border:1px solid var(--copper);display:grid;place-items:center;color:var(--copper-dark);font-weight:800;font-size:17px;transform:rotate(-8deg)}
.logo-text{font-weight:800;letter-spacing:.04em;line-height:1.2}
.logo-text small{display:block;font-size:10px;color:var(--copper-dark);font-weight:600;letter-spacing:.18em;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:27px;margin-left:auto}
.nav-links a{font-size:14px;color:var(--ink-soft);position:relative;padding:8px 0}
.nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--copper);transition:.25s}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-links a:hover:after,.nav-links a.active:after{right:0}
.nav-action{padding:10px 18px;border:1px solid var(--ink);font-size:14px;font-weight:700}
.nav-action:hover{background:var(--ink);color:#fff}
.menu-toggle{display:none;background:none;border:0;font-size:25px;color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:7px;font-weight:700;font-size:15px;border:1px solid transparent;transition:.25s}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--copper-dark);transform:translateY(-2px)}
.btn-light{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-light:hover{background:var(--ink);color:#fff}
.btn:focus,a:focus,input:focus,textarea:focus,summary:focus{outline:3px solid rgba(163,111,67,.35);outline-offset:3px}
.hero{padding:74px 0 76px;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0 0 0 43%;background:url('/assets/images/backpic/back-1.png') center/cover;opacity:.18;z-index:-2}
.hero:after{content:"";position:absolute;right:-130px;top:35px;width:370px;height:370px;border:1px solid var(--copper);border-radius:50%;opacity:.18;z-index:-1}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:70px;align-items:center}
.eyebrow,.section-kicker{color:var(--copper-dark);font-size:12px;letter-spacing:.17em;font-weight:800;text-transform:uppercase}
.hero h1{font-size:clamp(42px,5.3vw,70px);line-height:1.13;letter-spacing:-.04em;margin:17px 0 22px;max-width:660px}
.hero h1 em{color:var(--copper-dark);font-style:normal}
.hero-copy{font-size:18px;color:var(--ink-soft);max-width:600px}
.hero-buttons{display:flex;gap:14px;margin-top:31px;flex-wrap:wrap}
.hero-image{position:relative;min-height:420px}
.hero-image img{width:100%;height:420px;object-fit:cover;border-radius:14px;box-shadow:var(--shadow)}
.image-note{position:absolute;left:-25px;bottom:25px;background:var(--card);border:1px solid var(--line);padding:14px 18px;box-shadow:var(--shadow);font-size:13px}
.image-note strong{display:block;font-size:22px;color:var(--copper-dark);line-height:1.2}
.trust-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:60px}
.trust-item{padding:19px 20px;border-right:1px solid var(--line)}
.trust-item:last-child{border-right:0}
.trust-item b{display:block;font-size:15px}.trust-item span{font-size:13px;color:var(--muted)}
.section{padding:106px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:42px}
.section h2{font-size:clamp(30px,4vw,45px);line-height:1.2;letter-spacing:-.035em;margin-top:10px}
.section-intro{max-width:440px;color:var(--muted)}
.keyword-section{background:var(--card)}
.keyword-layout{display:grid;grid-template-columns:240px 1fr;gap:70px}
.index-rail{border-left:2px solid var(--copper);padding-left:20px}
.index-rail span{display:block;color:var(--muted);font-size:13px;margin-bottom:14px}
.index-rail strong{font-size:22px;line-height:1.4}
.keyword-list{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.keyword-card{padding:26px;border:1px solid var(--line);background:var(--paper);transition:.25s}
.keyword-card:hover{transform:translateY(-4px);border-color:var(--copper);box-shadow:var(--shadow)}
.tag{display:inline-flex;color:var(--copper-dark);font-size:12px;font-weight:800;letter-spacing:.06em;border-bottom:1px solid var(--copper);padding-bottom:3px}
.keyword-card h3{font-size:24px;margin:17px 0 7px}.keyword-card p{color:var(--ink-soft);font-size:14px}
.text-link{display:inline-block;color:var(--copper-dark);font-size:14px;font-weight:700;margin-top:15px}
.text-link:hover{color:var(--stamp)}
.feature-section{background:var(--paper-deep)}
.feature-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:25px;align-items:stretch}
.feature-main{position:relative;min-height:490px;overflow:hidden;color:#fff}
.feature-main img{width:100%;height:100%;object-fit:cover;filter:sepia(.15)}
.feature-main:after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,rgba(25,20,16,.82))}
.feature-content{position:absolute;left:32px;right:32px;bottom:27px;z-index:1}
.feature-content h3{font-size:31px;line-height:1.3;margin:10px 0}
.feature-content p{font-size:14px;color:#eee4d8}
.feature-side{display:grid;gap:25px}
.mini-feature{background:var(--card);border:1px solid var(--line);padding:27px;display:flex;flex-direction:column;justify-content:space-between}
.mini-feature img{height:150px;width:100%;object-fit:cover;margin:-27px -27px 20px;width:calc(100% + 54px)}
.mini-feature h3{font-size:22px;line-height:1.35;margin:10px 0}
.mini-feature p{font-size:14px;color:var(--muted)}
.news-section{background:var(--card)}
.news-layout{display:grid;grid-template-columns:1fr 1.8fr;gap:66px}
.news-lead{border-top:3px solid var(--copper);padding-top:21px}
.news-lead h3{font-size:28px;line-height:1.4;margin:14px 0}
.news-lead p{color:var(--muted)}
.news-list{border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:105px 1fr auto;gap:20px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line);transition:.2s}
.news-item:hover{padding-left:8px;background:var(--paper)}
.news-date{font-size:12px;color:var(--copper-dark);font-weight:700}
.news-item h4{font-size:17px;margin-bottom:4px}.news-item p{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-arrow{font-size:22px;color:var(--copper)}
.empty-state{padding:28px;border:1px dashed var(--line);color:var(--muted);text-align:center}
.faq-section{background:var(--paper)}
.faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px}
.faq-caption p{color:var(--muted);margin-top:20px}
.faq-list details{border-top:1px solid var(--line);padding:21px 0}
.faq-list details:last-child{border-bottom:1px solid var(--line)}
.faq-list summary{list-style:none;cursor:pointer;font-weight:700;display:flex;justify-content:space-between;gap:20px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"＋";color:var(--copper);font-size:22px;line-height:1}
.faq-list details[open] summary:after{content:"－"}
.faq-answer{color:var(--muted);font-size:14px;padding:14px 35px 0 0}
.cta-section{padding:75px 0;background:var(--ink);color:#fff}
.cta-box{display:flex;justify-content:space-between;align-items:center;gap:35px}
.cta-box h2{font-size:clamp(29px,4vw,46px);line-height:1.25}.cta-box p{color:#cfc2b5;margin-top:12px;max-width:620px}
.cta-box .btn-primary{background:var(--copper);color:#fff}.cta-box .btn-primary:hover{background:#c28a56}
.contact-form{margin-top:42px;display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:760px}
.contact-form input,.contact-form textarea{width:100%;background:#332e2a;color:#fff;border:1px solid #5a5048;border-radius:6px;padding:13px 15px}
.contact-form textarea{grid-column:1/-1;min-height:100px;resize:vertical}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:#b8aaa0}
.form-note{font-size:12px;color:#ad9e93;margin-top:10px}
.site-footer{background:#1b1918;color:#d9cec2;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:60px;padding-bottom:45px}
.footer-brand p{color:#9d9188;font-size:13px;max-width:300px;margin-top:15px}
.footer-title{font-size:14px;color:#fff;margin-bottom:15px}
.footer-links a{display:block;color:#9d9188;font-size:13px;margin:8px 0}.footer-links a:hover{color:#d39b65}
.footer-bottom{border-top:1px solid #38322e;padding-top:20px;color:#877c74;font-size:12px;display:flex;justify-content:space-between;gap:20px}
@media(max-width:992px){
  .navbar{gap:20px}.nav-links{gap:16px}
  .hero-grid,.feature-grid,.faq-layout{grid-template-columns:1fr;gap:35px}
  .hero:before{inset:45% 0 0;opacity:.11}.hero-image{min-height:330px}.hero-image img{height:330px}
  .keyword-layout{grid-template-columns:1fr;gap:30px}.index-rail{border-left:0;border-bottom:2px solid var(--copper);padding:0 0 15px}
  .news-layout{grid-template-columns:1fr;gap:35px}.footer-grid{gap:30px}
}
@media(max-width:768px){
  .container{width:min(100% - 36px,var(--container))}
  .navbar{height:68px;justify-content:space-between}.menu-toggle{display:block}
  .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:15px 18px;flex-direction:column;align-items:stretch;gap:0}
  .nav-links.open{display:flex}.nav-links a{padding:13px 0}.nav-action{display:none}
  .hero{padding:55px 0 60px}.hero h1{font-size:clamp(37px,11vw,55px)}
  .hero-copy{font-size:16px}.trust-bar{grid-template-columns:1fr 1fr;margin-top:42px}.trust-item:nth-child(2){border-right:0}.trust-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .section{padding:72px 0}.section-head{display:block;margin-bottom:30px}.section-intro{margin-top:15px}
  .keyword-list{grid-template-columns:1fr}.feature-main{min-height:370px}.mini-feature img{height:130px}
  .news-item{grid-template-columns:75px 1fr}.news-arrow{display:none}
  .cta-box{display:block}.cta-box .btn{margin-top:25px}.contact-form{grid-template-columns:1fr}.contact-form textarea{grid-column:auto}
  .footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}
}
@media(max-width:520px){
  .hero-buttons .btn{width:100%}.hero-image img{height:280px}.image-note{left:12px;bottom:12px}
  .trust-item{padding:14px 10px}.trust-item b{font-size:13px}.trust-item span{font-size:11px}
  .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
}

/* roulang page: category1 */
:root{
      --ink:#24211f;--ink-soft:#4b4540;--muted:#817971;--paper:#f6f1e9;
      --paper-deep:#ebe1d3;--card:#fffdf9;--copper:#a36f43;--copper-dark:#805331;
      --stamp:#a84c3d;--line:#ded2c3;--radius:16px;
      --shadow:0 18px 44px rgba(54,39,26,.09);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    a:hover{color:var(--copper-dark)}
    img{display:block;max-width:100%}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 44px));margin:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(246,241,233,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .navbar{height:78px;display:flex;align-items:center;gap:36px}
    .logo{display:flex;align-items:center;gap:12px;min-width:max-content}
    .logo-mark{width:38px;height:38px;border:1px solid var(--copper);display:grid;place-items:center;color:var(--copper-dark);font-weight:800;font-size:17px;transform:rotate(-8deg)}
    .logo-text{font-weight:800;letter-spacing:.04em;line-height:1.2}
    .logo-text small{display:block;font-size:10px;color:var(--copper-dark);font-weight:600;letter-spacing:.18em;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:27px;margin-left:auto}
    .nav-links a{font-size:14px;color:var(--ink-soft);position:relative;padding:8px 0}
    .nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--copper);transition:.25s}
    .nav-links a:hover,.nav-links a.active{color:var(--ink)}
    .nav-links a:hover:after,.nav-links a.active:after{right:0}
    .nav-action{padding:10px 18px!important;border:1px solid var(--ink);font-size:14px!important;font-weight:700}
    .nav-action:hover{background:var(--ink);color:#fff!important}
    .menu-toggle{display:none;background:none;border:0;font-size:25px;color:var(--ink)}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:7px;font-weight:700;font-size:15px;border:1px solid transparent;transition:.25s}
    .btn-primary{background:var(--ink);color:#fff}
    .btn-primary:hover{background:var(--copper-dark);color:#fff;transform:translateY(-2px)}
    .btn-light{border-color:var(--ink);color:var(--ink);background:transparent}
    .btn-light:hover{background:var(--ink);color:#fff}
    .btn:focus,a:focus,input:focus,textarea:focus,summary:focus{outline:3px solid rgba(163,111,67,.35);outline-offset:3px}
    .page-hero{padding:68px 0 72px;background:var(--paper-deep);position:relative;overflow:hidden}
    .page-hero:after{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(163,111,67,.36);border-radius:50%;right:-130px;top:-160px}
    .breadcrumb{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:38px}
    .breadcrumb span{color:var(--copper)}
    .hero-inner{display:grid;grid-template-columns:1fr  .86fr;gap:72px;align-items:center}
    .eyebrow,.section-kicker{color:var(--copper-dark);font-size:12px;letter-spacing:.17em;font-weight:800;text-transform:uppercase}
    .page-hero h1{font-size:clamp(40px,5vw,66px);line-height:1.15;letter-spacing:-.045em;margin:16px 0 22px;max-width:680px}
    .page-hero h1 em{font-style:normal;color:var(--copper-dark)}
    .hero-summary{max-width:620px;color:var(--ink-soft);font-size:18px}
    .hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:27px}
    .tag{display:inline-flex;color:var(--copper-dark);font-size:12px;font-weight:800;letter-spacing:.06em;border-bottom:1px solid var(--copper);padding-bottom:3px}
    .hero-visual{position:relative}
    .hero-visual img{height:350px;width:100%;object-fit:cover;border-radius:14px;box-shadow:var(--shadow)}
    .image-note{position:absolute;bottom:16px;left:16px;background:rgba(36,33,31,.86);color:#fff;padding:8px 13px;font-size:12px}
    .section{padding:100px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:42px}
    .section h2{font-size:clamp(30px,4vw,45px);line-height:1.2;letter-spacing:-.035em;margin:10px 0 0}
    .section-intro{max-width:460px;color:var(--muted)}
    .index-section{background:var(--card)}
    .index-layout{display:grid;grid-template-columns:240px 1fr;gap:50px}
    .index-nav{border-left:2px solid var(--copper);padding-left:20px;height:max-content}
    .index-nav strong{display:block;font-size:20px;margin-bottom:18px}
    .index-nav a{display:block;color:var(--muted);padding:8px 0;font-size:14px;border-bottom:1px solid transparent}
    .index-nav a:hover{color:var(--copper-dark);border-color:var(--line)}
    .record-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}
    .record-card{background:var(--paper);border:1px solid var(--line);padding:28px;min-height:210px;transition:.25s}
    .record-card:hover{transform:translateY(-4px);border-color:var(--copper);box-shadow:var(--shadow)}
    .record-card.large{grid-row:span 2;min-height:442px;background:var(--ink);color:#fff}
    .record-card .number{font-size:13px;color:var(--copper);font-weight:800;letter-spacing:.12em}
    .record-card h3{font-size:25px;line-height:1.35;margin:17px 0 10px}
    .record-card p{font-size:14px;color:var(--ink-soft);margin:0}
    .record-card.large p{color:#d8cdc1}
    .record-card img{width:100%;height:155px;object-fit:cover;margin:20px 0 23px}
    .record-card.large img{height:215px}
    .record-link{display:inline-block;margin-top:20px;color:var(--copper-dark);font-size:14px;font-weight:700}
    .record-card.large .record-link{color:#e0ad79}
    .guide-section{background:var(--paper)}
    .guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .guide-card{background:var(--card);border:1px solid var(--line);padding:28px;min-height:260px}
    .guide-card:nth-child(2){margin-top:34px}
    .guide-card:nth-child(3){margin-top:68px}
    .guide-card h3{font-size:22px;margin:15px 0 9px}
    .guide-card p{color:var(--muted);font-size:14px}
    .guide-card .mini-line{width:42px;height:2px;background:var(--copper);margin-top:25px}
    .faq-section{background:var(--card)}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:80px}
    .faq-caption p{color:var(--muted);margin-top:20px}
    .faq-list details{border-top:1px solid var(--line);padding:21px 0}
    .faq-list details:last-child{border-bottom:1px solid var(--line)}
    .faq-list summary{list-style:none;cursor:pointer;font-weight:700;display:flex;justify-content:space-between;gap:20px}
    .faq-list summary::-webkit-details-marker{display:none}
    .faq-list summary:after{content:"+";color:var(--copper);font-size:23px;line-height:1}
    .faq-list details[open] summary:after{content:"−";color:var(--stamp)}
    .faq-answer{color:var(--muted);font-size:14px;padding:14px 32px 0 0}
    .cta-section{padding:78px 0}
    .cta-box{background:var(--ink);color:#fff;padding:48px 55px;display:flex;justify-content:space-between;gap:35px;align-items:center;border-radius:14px}
    .cta-box h2{font-size:clamp(28px,4vw,43px);line-height:1.25;margin:10px 0}
    .cta-box p{color:#d8cdc1;max-width:620px;margin:0}
    .cta-box .btn-primary{background:#d19a65;color:var(--ink);white-space:nowrap}
    .cta-box .btn-primary:hover{background:#e1b17d}
    .site-footer{background:#201d1b;color:#eee4d8;padding:58px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px}
    .footer-brand p{color:#b8aaa0;max-width:330px;font-size:14px;margin-top:20px}
    .site-footer .logo-text{color:#fff}
    .site-footer .logo-mark{color:#d19a65;border-color:#d19a65}
    .site-footer .logo-text small{color:#d19a65}
    .footer-title{font-weight:700;margin-bottom:15px;color:#d19a65}
    .footer-links{display:flex;flex-direction:column;gap:8px;color:#b8aaa0;font-size:14px}
    .footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid #433a34;margin-top:45px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#978a81;font-size:12px}
    @media(max-width:992px){
      .navbar{gap:18px}.nav-links{gap:16px}
      .hero-inner,.faq-layout{grid-template-columns:1fr;gap:35px}
      .hero-visual img{height:300px}.index-layout{grid-template-columns:190px 1fr}.record-grid{grid-template-columns:1fr}
      .record-card.large{grid-row:auto;min-height:0}.record-card.large img{height:190px}
      .guide-card:nth-child(2),.guide-card:nth-child(3){margin-top:0}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 36px))}
      .navbar{height:70px}.menu-toggle{display:block;margin-left:auto}
      .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:16px 22px;flex-direction:column;align-items:stretch;gap:5px}
      .nav-links.open{display:flex}.nav-links a{padding:10px 0}.nav-action{text-align:center}
      .page-hero{padding:42px 0 54px}.breadcrumb{margin-bottom:28px}.page-hero h1{font-size:42px}
      .section{padding:70px 0}.section-head{display:block;margin-bottom:30px}.section-intro{margin-top:16px}
      .index-layout{grid-template-columns:1fr;gap:30px}.index-nav{display:flex;gap:18px;overflow:auto;border-left:0;border-bottom:2px solid var(--copper);padding:0 0 10px;white-space:nowrap}.index-nav strong{display:none}
      .guide-grid{grid-template-columns:1fr}.cta-box{display:block;padding:34px 26px}.cta-box .btn{margin-top:25px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:32px}.footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}
    }
    @media(max-width:520px){
      .logo-text{font-size:14px}.logo-text small{font-size:8px;letter-spacing:.08em}
      .hero-visual img{height:240px}.page-hero h1{font-size:35px}.hero-summary{font-size:16px}
      .record-card{padding:22px}.record-card h3{font-size:21px}
      .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
    }

/* roulang page: article */
:root{
      --ink:#24211f;
      --ink-soft:#4b4540;
      --muted:#817971;
      --paper:#f6f1e9;
      --paper-deep:#ebe1d3;
      --card:#fffdf9;
      --copper:#a36f43;
      --copper-dark:#805331;
      --stamp:#a84c3d;
      --line:#ded2c3;
      --radius:16px;
      --shadow:0 18px 44px rgba(54,39,26,.09);
      --container:1200px;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--paper);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    a:hover{color:var(--copper-dark)}
    img{display:block;max-width:100%}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 44px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(246,241,233,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .navbar{height:78px;display:flex;align-items:center;gap:36px}
    .logo{display:flex;align-items:center;gap:12px;min-width:max-content}
    .logo-mark{width:38px;height:38px;border:1px solid var(--copper);display:grid;place-items:center;color:var(--copper-dark);font-weight:800;font-size:17px;transform:rotate(-8deg)}
    .logo-text{font-weight:800;letter-spacing:.04em;line-height:1.2}
    .logo-text small{display:block;font-size:10px;color:var(--copper-dark);font-weight:600;letter-spacing:.16em;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:27px;margin-left:auto}
    .nav-links a{font-size:14px;color:var(--ink-soft);position:relative;padding:8px 0}
    .nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--copper);transition:.25s}
    .nav-links a:hover,.nav-links a.active{color:var(--ink)}
    .nav-links a:hover:after,.nav-links a.active:after{right:0}
    .nav-action{padding:10px 18px!important;border:1px solid var(--ink)}
    .nav-action:hover{background:var(--ink);color:#fff!important}
    .menu-toggle{display:none;background:none;border:0;font-size:25px;color:var(--ink);padding:8px}
    .breadcrumb-bar{padding:28px 0 10px;color:var(--muted);font-size:13px}
    .breadcrumb-bar a{color:var(--copper-dark)}
    .breadcrumb-bar span{padding:0 9px;color:#b6a99b}
    .article-hero{padding:28px 0 70px;position:relative;overflow:hidden}
    .article-hero:before{content:"";position:absolute;inset:0 0 0 48%;background:url('/assets/images/backpic/back-2.png') center/cover;opacity:.15;z-index:-1}
    .article-head{max-width:900px}
    .eyebrow,.section-kicker{color:var(--copper-dark);font-size:12px;letter-spacing:.17em;font-weight:800;text-transform:uppercase}
    .article-head h1{font-size:clamp(34px,5vw,62px);line-height:1.2;letter-spacing:-.04em;margin:15px 0 22px;max-width:880px}
    .article-summary{max-width:760px;color:var(--ink-soft);font-size:18px;line-height:1.9}
    .article-meta{display:flex;flex-wrap:wrap;gap:10px 25px;margin-top:27px;color:var(--muted);font-size:13px}
    .meta-label{color:var(--copper-dark);font-weight:700}
    .article-cover{margin-top:46px;height:390px;overflow:hidden;border-radius:var(--radius);box-shadow:var(--shadow);background:var(--paper-deep)}
    .article-cover img{width:100%;height:100%;object-fit:cover}
    .article-layout{display:grid;grid-template-columns:220px minmax(0,780px);gap:68px;align-items:start;padding:92px 0}
    .article-aside{position:sticky;top:108px}
    .aside-title{font-size:12px;color:var(--copper-dark);font-weight:800;letter-spacing:.12em;border-bottom:1px solid var(--line);padding-bottom:13px}
    .aside-note{font-size:14px;color:var(--muted);margin-top:18px}
    .article-content{min-width:0;color:var(--ink-soft);font-size:17px;line-height:2}
    .article-content h2{color:var(--ink);font-size:32px;line-height:1.35;margin:48px 0 18px}
    .article-content h3{color:var(--ink);font-size:23px;line-height:1.45;margin:36px 0 13px}
    .article-content p{margin:0 0 22px}
    .article-content ul,.article-content ol{padding-left:1.5em;margin:10px 0 25px}
    .article-content li{padding-left:7px;margin:6px 0}
    .article-content blockquote{margin:30px 0;padding:20px 25px;border-left:4px solid var(--copper);background:var(--card);color:var(--ink);font-size:18px}
    .article-content img{width:auto;max-width:100%;height:auto;border-radius:12px;margin:30px auto 8px}
    .article-content table{width:100%;border-collapse:collapse;margin:25px 0;background:var(--card);font-size:15px}
    .article-content th,.article-content td{border:1px solid var(--line);padding:11px 14px;text-align:left}
    .article-content th{background:var(--paper-deep);color:var(--ink)}
    .article-content hr{border:0;border-top:1px solid var(--line);margin:42px 0}
    .empty-state{padding:58px 30px;text-align:center;border:1px solid var(--line);background:var(--card);border-radius:var(--radius)}
    .empty-mark{width:52px;height:52px;margin:0 auto 18px;border:1px solid var(--copper);display:grid;place-items:center;color:var(--copper-dark);font-size:23px}
    .empty-state h2{font-size:28px;margin:0 0 10px}
    .empty-state p{color:var(--muted);margin:0 0 22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:7px;font-weight:700;font-size:15px;border:1px solid transparent;transition:.25s}
    .btn-primary{background:var(--ink);color:#fff}
    .btn-primary:hover{background:var(--copper-dark);color:#fff;transform:translateY(-2px)}
    .btn-light{border-color:var(--ink);color:var(--ink);background:transparent}
    .btn-light:hover{background:var(--ink);color:#fff}
    .btn:focus,a:focus,button:focus,input:focus,textarea:focus{outline:3px solid rgba(163,111,67,.35);outline-offset:3px}
    .related-section{padding:82px 0;background:var(--paper-deep)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:35px}
    .section h2{font-size:clamp(30px,4vw,43px);line-height:1.2;letter-spacing:-.035em;margin:10px 0 0}
    .section-intro{max-width:430px;color:var(--muted)}
    .related-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}
    .related-card{background:var(--card);border:1px solid var(--line);padding:26px;transition:.25s}
    .related-card:hover{transform:translateY(-4px);border-color:var(--copper);box-shadow:var(--shadow)}
    .related-card.featured{min-height:240px;display:flex;flex-direction:column;justify-content:end;background:linear-gradient(180deg,rgba(36,33,31,.08),rgba(36,33,31,.86)),url('/assets/images/coverpic/cover-5.jpg') center/cover;color:#fff}
    .related-card.featured .tag{color:#f2d8b9;border-color:#f2d8b9}
    .related-card h3{font-size:23px;line-height:1.4;margin:13px 0 7px}
    .related-card p{margin:0;color:var(--muted);font-size:14px}
    .related-card.featured p{color:#eee4d8}
    .tag{display:inline-flex;width:max-content;color:var(--copper-dark);font-size:12px;font-weight:800;letter-spacing:.06em;border-bottom:1px solid var(--copper);padding-bottom:3px}
    .back-links{display:flex;justify-content:space-between;gap:18px;margin-top:30px}
    .back-link{padding:18px 20px;border:1px solid var(--line);background:var(--card);flex:1}
    .back-link small{display:block;color:var(--muted);font-size:12px;margin-bottom:5px}
    .back-link strong{font-size:15px}
    .cta-section{padding:78px 0}
    .cta-box{background:var(--ink);color:#fff;padding:48px 55px;border-radius:var(--radius);display:flex;align-items:center;justify-content:space-between;gap:30px;position:relative;overflow:hidden}
    .cta-box:after{content:"今";position:absolute;right:35px;bottom:-55px;color:rgba(255,255,255,.05);font-size:190px;font-weight:800}
    .cta-box h2{font-size:clamp(27px,3.5vw,40px);line-height:1.3;margin:10px 0}
    .cta-box p{color:#d8cec2;margin:0;max-width:620px}
    .cta-box .btn{position:relative;z-index:1;background:#e1b486;color:var(--ink);border-color:#e1b486}
    .cta-box .btn:hover{background:#f0c99f}
    .site-footer{padding:58px 0 24px;background:#1f1c1a;color:#eee4d8}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr;gap:50px;padding-bottom:45px}
    .footer-brand .logo-text{color:#fff}
    .footer-brand p{color:#bdb0a2;max-width:340px;font-size:14px;margin-top:20px}
    .footer-title{font-size:13px;color:#d7a978;font-weight:800;letter-spacing:.1em;margin-bottom:16px}
    .footer-links{display:grid;gap:9px;color:#bdb0a2;font-size:14px}
    .footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid #403832;padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:#94877b;font-size:12px}
    @media(max-width:992px){
      .navbar{gap:20px}
      .nav-links{gap:16px}
      .article-layout{grid-template-columns:170px minmax(0,1fr);gap:35px}
      .footer-grid{gap:25px}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 36px))}
      .navbar{height:70px}
      .menu-toggle{display:block;margin-left:auto}
      .nav-links{display:none;position:absolute;left:18px;right:18px;top:70px;padding:17px 20px;flex-direction:column;align-items:stretch;gap:4px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow)}
      .nav-links.open{display:flex}
      .nav-links a{padding:10px 2px}
      .nav-action{text-align:center;margin-top:7px}
      .article-hero{padding-top:15px;padding-bottom:48px}
      .article-cover{height:280px;margin-top:32px}
      .article-layout{display:block;padding:55px 0}
      .article-aside{position:static;margin-bottom:32px;padding:18px;background:var(--card);border:1px solid var(--line)}
      .article-content{font-size:16px}
      .article-content h2{font-size:27px}
      .related-grid{grid-template-columns:1fr}
      .cta-box{display:block;padding:36px 27px}
      .cta-box .btn{margin-top:24px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:7px}
    }
    @media(max-width:520px){
      .logo-text{font-size:14px}
      .logo-text small{font-size:8px}
      .article-head h1{font-size:34px}
      .article-summary{font-size:16px}
      .article-meta{gap:6px 14px}
      .article-cover{height:210px}
      .back-links{display:grid}
      .footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
    }