/* 基础 */
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F5F7F8;color:#38454D;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.82}img{display:block;max-width:100%;height:auto}a{color:#315E70;text-decoration-thickness:1px;text-underline-offset:.18em}a:hover{text-decoration-thickness:2px}a:focus-visible,button:focus-visible{outline:3px solid #B9653B;outline-offset:3px}.skip-link{position:absolute;left:12px;top:-80px;background:#fff;padding:10px 14px;z-index:1000}.skip-link:focus{top:10px}button{font:inherit}.site-main{min-width:0}h1,h2,h3{color:#1E2A32;margin-top:0}h1{font-size:36px;line-height:1.25}h2{font-size:26px;line-height:1.35}h3{font-size:20px;line-height:1.45}p{margin:0 0 1.1em}ul,ol{padding-left:1.35em}.eyebrow{color:#B9653B;font-size:14px;font-weight:700;letter-spacing:.04em}.muted{color:#65727A}.tag{display:inline-block;border-left:3px solid #B9653B;padding-left:9px;color:#65727A;font-size:14px}.breadcrumbs{font-size:14px;color:#65727A;margin-bottom:14px}.breadcrumbs a{color:#496779}.section-link{font-weight:700}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 15px;border-radius:8px;border:1px solid #183247;background:#183247;color:#fff;text-decoration:none}.button.secondary{background:#fff;color:#183247}.image-wrap{margin:24px 0;min-width:0}.image-wrap img{object-fit:contain;border:1px solid #D6DDE1;border-radius:10px;background:#fff}.content-image{max-width:460px}.content-image img{max-height:280px}.narrow-image{max-width:330px}.narrow-image img{max-height:240px}.device-image{max-width:250px}.device-image img{max-height:390px}.opening-image{max-width:390px}.opening-image img{max-height:280px}.focus-image{max-width:520px}.focus-image img{max-height:310px}
/* 布局 */
.site-header{background:#fff;border-bottom:1px solid #D6DDE1;position:relative;z-index:20}.header-inner{max-width:1200px;margin:0 auto;padding:0 34px;height:70px;display:flex;align-items:center;gap:24px;min-width:0}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;min-width:0;color:#183247}.brand-logo{height:32px;width:auto;max-width:170px}.brand-mark{font-weight:800;white-space:nowrap}.brand-en{font-size:11px;color:#65727A;letter-spacing:.05em}.primary-nav{display:flex;gap:18px;align-items:center;margin-left:auto;min-width:0}.primary-nav a,.route-link{font-size:15px;text-decoration:none;color:#38454D;white-space:nowrap}.primary-nav a[aria-current="page"],.route-link[aria-current="page"]{color:#B9653B;font-weight:700}.header-actions{display:flex;gap:10px;align-items:center}.menu-toggle,.menu-close{min-height:44px;border:1px solid #D6DDE1;border-radius:8px;background:#fff;color:#183247;padding:8px 13px;cursor:pointer}.category-panel{background:#F5F7F8;border-bottom:1px solid #D6DDE1}.category-inner{max-width:1200px;margin:0 auto;padding:22px 34px 24px}.category-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:16px}.category-groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.category-groups section{min-width:0}.category-groups h2{font-size:16px;margin-bottom:10px}.category-groups a{display:block;padding:4px 0;text-decoration:none}.category-groups small{color:#758189}.service-links{display:flex;flex-wrap:wrap;gap:8px 16px;border-top:1px solid #D6DDE1;margin-top:18px;padding-top:14px;font-size:14px}.page-shell{max-width:1040px;margin:0 auto;padding:56px 34px 68px;min-width:0}.page-shell.narrow{max-width:780px}.page-intro{max-width:780px;margin-bottom:36px}.page-intro p{font-size:17px}.section{margin:56px 0;min-width:0}.article-column{max-width:760px}.reading-column{max-width:690px}.push-right{margin-left:auto}.narrow-660{max-width:660px}.two-col{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:34px;align-items:start}.asym{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:42px;align-items:start}.three-col{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.soft-block{background:#fff;border:1px solid #D6DDE1;border-radius:12px;padding:24px}.blue-block{background:#E8EEF2;padding:26px;border-radius:12px}.warm-block{background:#F3E9DF;padding:26px;border-radius:12px}.dark-block{background:#183247;color:#F3F6F7;padding:30px;border-radius:14px}.dark-block h2,.dark-block h3{color:#fff}.dark-block a{color:#F6D7C7}.rule-list{border-left:1px solid #D6DDE1;padding-left:22px}.rule-list article{padding:0 0 26px;position:relative}.rule-list article::before{content:"";position:absolute;width:9px;height:9px;border-radius:50%;background:#B9653B;left:-27px;top:9px}.step-line{display:grid;grid-template-columns:52px minmax(0,1fr);gap:18px;margin:28px 0}.step-no{color:#B9653B;font-weight:800}.inline-links{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:18px}.note{border-left:4px solid #3F746F;padding:12px 16px;background:#fff}.index-list{display:grid;gap:0;border-top:1px solid #D6DDE1}.index-list a{display:grid;grid-template-columns:52px minmax(0,1fr);gap:16px;padding:16px 0;border-bottom:1px solid #D6DDE1;text-decoration:none}.index-list strong{color:#B9653B}.topic-row{display:grid;grid-template-columns:140px minmax(0,1fr);gap:28px;padding:24px 0;border-top:1px solid #D6DDE1}.topic-row:last-child{border-bottom:1px solid #D6DDE1}.faq-item{padding:0 0 24px;margin-bottom:26px;border-bottom:1px solid #D6DDE1}.faq-item h2{font-size:20px}.site-footer{background:#132A3A;color:#F3F6F7}.footer-grid{max-width:1200px;margin:0 auto;padding:48px 34px 88px;display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:34px}.site-footer h2{font-size:17px;color:#fff}.site-footer a{display:block;color:#F3F6F7;margin:7px 0}.footer-en{display:block;color:#C9D4D9;font-size:12px;margin:6px 0 12px}.mobile-bottom{display:none}.hero-opening{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:42px;align-items:center}.home-line{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:34px;align-items:center}.genre-words{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.genre-words div{padding-top:12px;border-top:2px solid #D6DDE1}.relation-track{list-style:none;padding:0;margin:0}.relation-track li{padding:13px 0;border-bottom:1px solid #D6DDE1;color:#183247;font-weight:700}.creation-path{display:grid;grid-template-columns:42px minmax(0,1fr);gap:12px 20px}.creation-path strong{color:#B9653B}.side-note-layout{display:grid;grid-template-columns:minmax(0,1fr) 180px;gap:36px}.side-note{font-size:14px;color:#65727A;border-left:1px solid #D6DDE1;padding-left:16px}.case-feature{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:32px}.collection-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:34px}
/* 响应式 */
@media (max-width:1100px){.primary-nav{gap:12px}.primary-nav a{font-size:14px}.header-inner{padding:0 24px}.category-inner,.page-shell,.footer-grid{padding-left:24px;padding-right:24px}.brand-en{display:none}}
@media (max-width:900px){.primary-nav{display:none}.header-actions{margin-left:auto}.route-link{display:none}.two-col,.asym,.hero-opening,.home-line,.case-feature,.collection-split{grid-template-columns:minmax(0,1fr)}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.side-note-layout{grid-template-columns:minmax(0,1fr)}.side-note{border-left:0;border-top:1px solid #D6DDE1;padding:14px 0 0}.genre-words{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:767px){body{padding-bottom:calc(58px + env(safe-area-inset-bottom))}.header-inner{height:60px;padding:0 16px}.brand-logo{height:27px;max-width:150px}.brand-en{display:none}.brand-mark{font-size:15px}.category-inner,.page-shell{padding-left:16px;padding-right:16px}.page-shell{padding-top:38px;padding-bottom:48px}.page-intro{margin-bottom:28px}h1{font-size:28px;line-height:1.35}h2{font-size:22px;line-height:1.4}h3{font-size:18px;line-height:1.5}.section{margin:40px 0}.category-groups{grid-template-columns:minmax(0,1fr);gap:18px}.category-groups small{display:none}.category-head{margin-bottom:8px}.service-links{gap:7px 14px}.three-col,.genre-words{grid-template-columns:minmax(0,1fr)}.two-col,.asym,.hero-opening,.home-line,.case-feature,.collection-split{grid-template-columns:minmax(0,1fr);grid-template-areas:none}.two-col>*,.asym>*,.hero-opening>*,.home-line>*,.case-feature>*,.collection-split>*{grid-column:auto!important;grid-row:auto!important;grid-area:auto!important;min-width:0}.topic-row{grid-template-columns:minmax(0,1fr);gap:8px}.step-line{grid-template-columns:minmax(0,1fr);gap:6px}.step-no{display:inline-block}.index-list a{grid-template-columns:42px minmax(0,1fr)}.content-image,.narrow-image,.focus-image,.opening-image{max-width:100%}.content-image img,.narrow-image img,.focus-image img{max-height:210px}.opening-image img{max-height:210px}.device-image{max-width:190px}.device-image img{max-height:300px}.footer-grid{grid-template-columns:minmax(0,1fr);padding:40px 16px 88px}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;height:calc(58px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid #D6DDE1;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));z-index:30}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:12px;text-decoration:none;color:#183247;min-width:0}.button-row{gap:10px}.button{flex:0 1 auto}.creation-path{grid-template-columns:34px minmax(0,1fr)}.rule-list{border-left:0;padding-left:0}.rule-list article{padding-left:0}.rule-list article::before{display:none}}
@media (max-width:359px){.header-inner,.category-inner,.page-shell{padding-left:14px;padding-right:14px}.brand-mark{font-size:14px}.menu-toggle{padding:7px 10px}.service-links{display:block}.service-links a{display:block;padding:4px 0}.index-list a{grid-template-columns:minmax(0,1fr);gap:4px}}
@media (min-width:390px) and (max-width:767px){.category-groups section a{display:inline-block;width:49%;vertical-align:top;padding-right:10px}.category-groups section h2{display:block}}