*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#efe6d0;color:#262014;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:15px;line-height:1.75;overflow-x:hidden}.shell{width:min(960px,calc(100% - 32px));margin:auto}a{color:inherit;text-decoration:none}button,input{font:inherit}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid #a88830;outline-offset:3px}.site-header{position:fixed;inset:0 0 auto;z-index:50}.microbar{height:22px;background:#12100a;color:#c6a64d;font-size:12px}.microbar-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.search-trigger{border:0;background:transparent;color:#c6a64d;padding:0;cursor:pointer}.brandbar{height:58px;background:#f7f1e0;border-bottom:1px solid rgba(74,58,18,.22)}.brandbar-inner{height:58px;display:flex;align-items:center;justify-content:space-between}.brand-home{height:44px;display:flex;align-items:center}.brand-logo,.panel-logo,.footer-logo{height:24px;max-width:160px;object-fit:contain}.header-actions{display:flex;gap:8px;align-items:center}.header-actions a,.menu-trigger{height:42px;padding:0 14px;display:inline-flex;align-items:center;border:1px solid rgba(74,58,18,.36);background:#f7f1e0;color:#12100a;cursor:pointer}.quick-nav{height:46px;background:#e8ddc4;border-bottom:1px solid rgba(18,16,10,.1)}.quick-nav-inner{height:46px;display:flex;align-items:stretch}.quick-link{min-width:150px;padding:0 20px;display:flex;gap:9px;align-items:center;border-right:1px solid rgba(18,16,10,.1);font-size:13px}.quick-link span{font-size:11px;color:#766844}.quick-link.is-current{background:#12100a;color:#f7f1e0}.quick-link.is-current span{color:#c6a64d}.site-main{padding-top:126px;min-height:70vh}.hero{padding:44px 0 30px}.hero-frame{border-top:4px solid #12100a;border-bottom:1px solid rgba(74,58,18,.3);padding:24px 0;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(240px,.75fr);gap:34px}.kicker{font-size:12px;letter-spacing:.14em;color:#766844}.hero h1,.page-head h1{font-size:24px;line-height:1.35;margin:8px 0 12px;color:#12100a}.hero .lead{font-size:18px;font-weight:700;color:#4a3a12}.hero aside{background:#12100a;color:#f7f1e0;padding:20px}.hero aside h2{font-size:16px;margin:0 0 10px;color:#c6a64d}.hero aside p{margin:0 0 10px}.page-head{padding:36px 0 22px}.page-head p{max-width:760px;color:#564a30}.section{padding:26px 0}.section-title{display:flex;align-items:baseline;justify-content:space-between;gap:16px;border-bottom:1px solid rgba(74,58,18,.28);padding-bottom:10px;margin-bottom:16px}.section h2{font-size:20px;margin:0;color:#12100a}.section h3{font-size:16px;margin:0 0 8px;color:#12100a}.section p{margin:0 0 12px}.btn-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn{height:42px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;border:1px solid #4a3a12;font-size:14px}.btn.primary{background:linear-gradient(135deg,#12100a 0%,#a88830 100%);color:#f7f1e0}.btn.secondary{background:#f7f1e0;color:#12100a}.btn:hover{transform:translateY(-1px)}.image-slot{display:flex;align-items:center;justify-content:center;background:#f7f1e0;border:1px solid rgba(18,16,10,.12);overflow:hidden}.image-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.image-slot.medium{height:178px}.image-slot.tall{height:min(320px,60vw)}.image-slot.banner{height:200px}.feature-ribbon{display:grid;grid-template-columns:1fr 1.1fr;background:#f7f1e0;border:1px solid rgba(18,16,10,.12)}.feature-ribbon .copy{padding:24px}.feature-ribbon .image-slot{min-height:220px;border:0;border-left:1px solid rgba(18,16,10,.12)}.bullet-news{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.bullet-news article{background:#f7f1e0;padding:20px;border-top:3px solid #4a3a12}.bullet-news article:first-child{grid-row:span 2}.bullet-news .image-slot{height:160px;margin-bottom:14px}.note-stack{display:grid;gap:10px}.note-stack article{display:grid;grid-template-columns:120px 1fr;gap:18px;background:#e8ddc4;border-left:5px solid #a88830;padding:18px}.collection-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:14px}.collection-grid article{background:#f7f1e0;border:1px solid rgba(18,16,10,.12);padding:20px}.collection-grid .image-slot{height:190px;margin-bottom:14px}.period-list{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid rgba(74,58,18,.3)}.period-list article{padding:18px;background:#f7f1e0;border-right:1px solid rgba(74,58,18,.22)}.period-list article:last-child{border-right:0}.progress-list{display:grid;gap:8px}.progress-item{display:grid;grid-template-columns:105px 1fr;gap:16px;padding:14px 16px;background:#f7f1e0;border:1px solid rgba(18,16,10,.12)}.progress-item strong{color:#4a3a12}.app-block{background:#12100a;color:#f7f1e0;padding:24px}.app-block h2{color:#c6a64d}.app-media{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:center}.app-media .image-slot{border-color:rgba(198,166,77,.3)}.guide-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.guide-grid article{background:#f7f1e0;border:1px solid rgba(18,16,10,.12);padding:18px}.faq-short,.faq-list{display:grid;gap:10px}.faq-short details,.faq-list details{background:#f7f1e0;border:1px solid rgba(18,16,10,.12);padding:14px 18px}.faq-short summary,.faq-list summary{cursor:pointer;font-weight:700}.page-card{background:#f7f1e0;border:1px solid rgba(18,16,10,.12);padding:22px}.narrow-feed{max-width:760px;display:grid;gap:14px}.narrow-feed article{background:#f7f1e0;border-left:4px solid #4a3a12;padding:20px}.offset-cut{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:18px;align-items:stretch}.offset-cut .copy{background:#e8ddc4;padding:22px}.offset-cut .image-slot{min-height:260px;clip-path:polygon(12% 0,100% 0,100% 100%,0 100%,0 12%)}.fold-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.fold-list article{background:#f7f1e0;border-left:8px solid #4a3a12;padding:20px}.article-stack{display:grid;gap:14px}.article-stack article{background:#f7f1e0;border-top:2px solid #a88830;padding:20px}.memo-list{display:grid;gap:10px}.memo-item{background:#f7f1e0;border-bottom:1px solid rgba(74,58,18,.3);padding:16px}.method-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.method-grid article{background:#f7f1e0;border:1px solid rgba(74,58,18,.22);padding:20px}.topic-list{display:grid;gap:10px}.topic-row{display:grid;grid-template-columns:160px 1fr;gap:18px;background:#f7f1e0;padding:18px;border-top:1px solid rgba(74,58,18,.35)}.center-card{max-width:740px;margin:auto;background:#f7f1e0;border:1px solid rgba(18,16,10,.12);padding:24px}.terms section{padding:18px 0;border-bottom:1px solid rgba(18,16,10,.12)}.simple-list{display:grid;gap:10px}.simple-list a{display:block;background:#f7f1e0;border:1px solid rgba(18,16,10,.12);padding:16px}.brand-statement{background:#12100a;color:#f7f1e0;padding:22px}.brand-statement h2{color:#c6a64d}.site-footer{margin-top:44px;background:#12100a;color:#efe6d0;border-top:1px solid #a88830;padding:30px 0 calc(28px + env(safe-area-inset-bottom))}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:26px}.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:8px}.footer-brand span{color:#c6a64d;font-size:12px}.footer-brand p{font-size:13px;color:#cfc4a8}.footer-grid h2{font-size:14px;color:#c6a64d;margin:0 0 8px}.footer-grid a{display:block;font-size:13px;margin:4px 0}.footer-bottom{font-size:13px;color:#cfc4a8;border-top:1px solid rgba(168,136,48,.28);margin-top:22px;padding-top:18px}.overlay{position:fixed;inset:0;background:rgba(18,16,10,.48);z-index:70;opacity:0;pointer-events:none;transition:.18s}.overlay.is-open{opacity:1;pointer-events:auto}.side-panel{position:fixed;right:0;top:22px;bottom:0;width:min(390px,92vw);background:#f7f1e0;z-index:80;transform:translateX(100%);visibility:hidden;pointer-events:none;transition:.2s;display:flex;flex-direction:column}.side-panel.is-open{transform:none;visibility:visible;pointer-events:auto}.panel-head{padding:14px 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(18,16,10,.12)}.panel-brand{display:flex;align-items:center;gap:9px}.panel-close,.search-close{height:38px;padding:0 12px;background:#f7f1e0;border:1px solid rgba(74,58,18,.36);cursor:pointer}.panel-scroll{overflow:auto;padding:12px 16px}.panel-scroll section{margin-bottom:18px}.panel-scroll h2{font-size:13px;color:#4a3a12;margin:0 0 6px}.panel-scroll a{display:block;padding:9px 0;border-bottom:1px solid rgba(18,16,10,.08)}.panel-scroll b{display:block;font-size:14px}.panel-scroll span{display:block;font-size:12px;color:#766844}.search-panel{position:fixed;z-index:85;top:80px;left:50%;width:min(720px,calc(100% - 32px));transform:translate(-50%,-12px);opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.search-panel.is-open{transform:translate(-50%,0);opacity:1;visibility:visible;pointer-events:auto}.search-card{background:#f7f1e0;border:1px solid rgba(74,58,18,.45);box-shadow:0 16px 38px rgba(18,16,10,.22);padding:18px}.search-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.search-card label{display:block;margin-bottom:8px;color:#564a30}.search-card input{width:100%;height:44px;border:1px solid rgba(74,58,18,.42);background:#fffdf7;padding:0 12px}.search-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.search-links a{min-height:40px;display:inline-flex;align-items:center;padding:0 12px;background:#efe6d0;border:1px solid rgba(74,58,18,.28)}.mobile-bottom{display:none}.lock{overflow:hidden}
@media(max-width:720px){.quick-nav{display:none}.site-main{padding-top:80px;padding-bottom:62px}.brandbar{height:58px}.shell{width:calc(100% - 32px)}.header-actions a,.menu-trigger{padding:0 10px}.hero{padding-top:28px}.hero-frame,.feature-ribbon,.collection-grid,.app-media,.offset-cut,.fold-list,.method-grid,.topic-row,.footer-grid{grid-template-columns:1fr}.hero aside{margin-top:2px}.feature-ribbon .image-slot{border-left:0;border-top:1px solid rgba(18,16,10,.12);min-height:190px}.bullet-news,.guide-grid{grid-template-columns:1fr}.bullet-news article:first-child{grid-row:auto}.note-stack article,.progress-item{grid-template-columns:1fr;gap:6px}.period-list{grid-template-columns:1fr}.period-list article{border-right:0;border-bottom:1px solid rgba(74,58,18,.22)}.period-list article:last-child{border-bottom:0}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,1fr);background:#f7f1e0;border-top:1px solid rgba(74,58,18,.35);z-index:60}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:48px;font-size:13px}.mobile-bottom a.is-current{background:#a88830;color:#12100a}.search-panel{top:0;left:0;width:100%;height:100%;transform:none;background:#12100a}.search-panel.is-open{transform:none}.search-card{height:100%;border:0;background:#12100a;color:#efe6d0;padding:28px 16px}.search-card label{color:#c6a64d}.search-close{background:#12100a;color:#c6a64d;border-color:#a88830}.search-card input{background:#f7f1e0}.search-links a{background:#12100a;color:#c6a64d;border-color:#a88830}.site-footer{padding-bottom:calc(70px + env(safe-area-inset-bottom))}.offset-cut .image-slot{min-height:210px;clip-path:none}}