:root{--bg:#F6F4EE;--card:#fff;--soft:#ECEFE8;--sand:#F2E7D7;--green:#21463B;--deep:#17352D;--mid:#3C685A;--orange:#C56B3D;--gold:#C6A15B;--title:#1F2D28;--text:#3E4A45;--muted:#66716C;--border:#D9DED8;--footer:#183129;--foot:#F4F3ED}*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:anywhere}img,svg,video,canvas{display:block;max-width:100%;height:auto}a{color:var(--green);text-decoration-thickness:1px;text-underline-offset:3px}a:hover{color:var(--orange)}button:focus-visible,a:focus-visible{outline:3px solid var(--gold);outline-offset:3px}.skip{position:absolute;top:-60px;left:12px;background:#fff;padding:8px 12px;z-index:100}.skip:focus{top:12px}.site-header{background:#fff;border-bottom:1px solid var(--border);position:relative;z-index:10}.header-inner{max-width:1180px;margin:auto;padding:0 32px;height:70px;display:flex;align-items:center;gap:25px;min-width:0}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--title);min-width:0}.brand-logo{height:32px;width:auto;max-width:165px;object-fit:contain}.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--green);color:#fff;display:grid;place-items:center;font-weight:700}.brand-name{font-weight:760;white-space:nowrap;line-height:1.15}.brand-name small{display:block;font-size:10px;letter-spacing:.08em;color:var(--muted);margin-top:4px}.desktop-nav{display:flex;gap:18px;margin-left:auto;min-width:0}.desktop-nav a,.header-actions a{font-size:15px;text-decoration:none;white-space:nowrap;color:var(--title)}.desktop-nav a.active{font-weight:700;color:var(--orange)}.header-actions{display:flex;gap:12px;align-items:center}.directory-toggle{min-height:44px;padding:9px 14px;border:1px solid var(--green);background:#fff;color:var(--green);border-radius:9px;font:inherit;font-size:15px;cursor:pointer}.mobile-actions{display:none;margin-left:auto;align-items:center;gap:8px}.mobile-actions a{min-height:44px;display:flex;align-items:center;text-decoration:none}.mega-directory,.mobile-directory{background:#fff;border-top:1px solid var(--border)}.mega-inner{max-width:1180px;margin:auto;padding:24px 32px 30px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}.mega-inner h2,.mobile-dir-inner h2{font-size:16px;margin:0 0 10px}.mega-inner a{display:block;padding:7px 0;text-decoration:none;border-bottom:1px solid #edf0ed}.mega-inner small{display:block;color:var(--muted);font-size:13px}.mobile-dir-inner{padding:16px;display:grid;gap:18px}.mobile-dir-inner>div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 12px}.mobile-dir-inner h2{grid-column:1/-1}.mobile-dir-inner a{padding:7px 0;text-decoration:none}.directory-close{min-height:44px;border:0;background:var(--deep);color:#fff;border-radius:9px;font-size:15px}.wrap{width:min(100%,1180px);margin:auto;padding-left:32px;padding-right:32px;min-width:0}.long{width:min(100%,780px);margin-left:auto;margin-right:auto;min-width:0}.wide{width:min(100%,980px);margin-left:auto;margin-right:auto;min-width:0}.section{padding:60px 0}.page-head{padding:44px 0 30px;border-bottom:1px solid var(--border)}.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:10px}.eyebrow{display:inline-block;font-size:14px;color:var(--orange);font-weight:700;margin-bottom:8px}h1,h2,h3{color:var(--title);font-weight:760;letter-spacing:-.02em;overflow-wrap:anywhere}h1{font-size:34px;line-height:1.25;margin:0 0 16px}h2{font-size:25px;line-height:1.35;margin:0 0 18px}h3{font-size:19px;line-height:1.45;margin:0 0 10px}p{margin:0 0 18px}.lead{font-size:17px;color:#52605a;max-width:760px}.hero{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:46px;align-items:center;min-height:360px}.hero-visual{display:flex;justify-content:flex-end}.hero-visual img{max-width:430px;max-height:300px;object-fit:contain;border:1px solid var(--border);background:#fff}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 15px;border-radius:9px;background:var(--green);color:#fff;text-decoration:none}.button.secondary{background:#fff;color:var(--green);border:1px solid var(--green)}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;align-items:start}.leadbox{padding:26px;background:var(--soft);border-radius:16px}.text-panel{padding:22px;border-left:3px solid var(--gold);background:#fff}.purpose{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:38px}.purpose-list{display:grid;gap:10px}.purpose-list span{padding:10px 12px;background:#fff;border:1px solid var(--border);border-radius:10px}.content-image{width:auto;max-width:100%;max-height:240px;object-fit:contain;background:#fff;border:1px solid var(--border)}.prose-img{margin:28px auto;max-width:480px}.ai-layout,.mobile-layout{display:grid;grid-template-columns:minmax(0,.48fr) minmax(0,1fr);gap:38px;align-items:start}.ai-layout img{max-width:360px;max-height:300px}.mobile-layout img{max-width:240px;max-height:380px}.steps{padding-left:32px;position:relative}.steps::before{content:"";position:absolute;left:10px;top:8px;bottom:8px;width:1px;background:var(--border)}.step{position:relative;padding-bottom:24px}.step::before{content:"";position:absolute;left:-27px;top:8px;width:11px;height:11px;border-radius:50%;background:var(--orange)}.topic-mix{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:26px}.topic-main{padding:26px;background:var(--sand);border-radius:16px}.topic-side{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.topic-mini{padding:18px;background:#fff;border:1px solid var(--border);border-radius:12px}.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:36px}.side-index{position:sticky;top:20px;padding:18px;background:#fff;border:1px solid var(--border);border-radius:12px}.side-index a{display:block;padding:5px 0}.numbered{display:grid;grid-template-columns:74px minmax(0,1fr);gap:20px;padding:24px 0;border-top:1px solid var(--border)}.num{font-size:30px;color:var(--gold);font-weight:800}.flow{padding:24px 0;border-top:1px solid var(--border)}.note{padding:30px 0;border-top:1px solid var(--border)}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.75fr);gap:30px}.archive{padding:22px 0;border-top:1px solid var(--border)}.archive-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 20px}.faq{padding:24px 0;border-top:1px solid var(--border)}.faq h2{font-size:20px}.callout{padding:18px 20px;background:var(--soft);border-left:4px solid var(--mid);margin:24px 0}.service-links{display:flex;flex-wrap:wrap;gap:10px 18px;padding-top:18px;border-top:1px solid var(--border)}.site-footer{background:var(--footer);color:var(--foot);padding:44px 0 80px}.footer-grid{max-width:1180px;margin:auto;padding:0 32px;display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:26px}.footer-grid h2{font-size:17px;color:#fff}.footer-grid p{font-size:14px;color:#d8ded9}.footer-grid a{display:block;color:#f1eee5;text-decoration:none;font-size:14px;padding:4px 0}.bottom-nav{display:none}figure,section,article,aside,nav,div{min-width:0}@media(max-width:1024px){.header-inner,.wrap,.mega-inner,.footer-grid{padding-left:22px;padding-right:22px}.desktop-nav{gap:12px}.footer-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:767px){body{font-size:16px;line-height:1.8;padding-bottom:calc(56px + env(safe-area-inset-bottom))}.header-inner{height:60px;padding:0 16px;gap:10px}.brand-logo{height:27px;max-width:145px}.brand-mark{width:28px;height:28px}.brand-name{font-size:15px}.brand-name small{display:none}.desktop-nav,.header-actions,.mega-directory{display:none!important}.mobile-actions{display:flex}.wrap{padding-left:16px;padding-right:16px}.section{padding:40px 0}.page-head{padding:30px 0 24px}h1{font-size:28px;line-height:1.35}h2{font-size:22px;line-height:1.42}h3{font-size:18px;line-height:1.5}.lead{font-size:16px}.hero,.grid2,.purpose,.ai-layout,.mobile-layout,.topic-mix,.article-grid,.split{display:grid;grid-template-columns:minmax(0,1fr);grid-template-areas:none;gap:24px}.hero>*,.grid2>*,.purpose>*,.ai-layout>*,.mobile-layout>*,.topic-mix>*,.article-grid>*,.split>*{grid-column:auto!important;grid-row:auto!important;grid-area:auto!important;position:static;order:initial;width:auto;max-width:100%;min-width:0}.hero{min-height:0}.hero-visual{justify-content:flex-start}.hero-visual img{max-width:100%;max-height:220px}.leadbox{padding:18px}.topic-side{grid-template-columns:minmax(0,1fr)}.topic-main{padding:20px}.content-image,.ai-layout img{max-width:100%;max-height:200px}.mobile-layout img{max-width:190px;max-height:290px}.numbered{grid-template-columns:minmax(0,1fr);gap:8px}.num{font-size:16px;display:inline-flex;width:max-content;padding:2px 8px;background:var(--sand);border-radius:99px}.steps{padding-left:0}.steps::before,.step::before{display:none}.step{border-bottom:1px solid var(--border)}.side-index{position:static}.archive-links{grid-template-columns:minmax(0,1fr)}.footer-grid{padding:0 16px;grid-template-columns:minmax(0,1fr)}.site-footer{padding-bottom:90px}.bottom-nav{position:fixed;left:0;right:0;bottom:0;height:calc(56px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(4,minmax(0,1fr));z-index:20}.bottom-nav a{display:flex;align-items:center;justify-content:center;text-decoration:none;font-size:15px;min-width:0}}@media(max-width:360px){.mobile-dir-inner>div{grid-template-columns:minmax(0,1fr)}.mobile-dir-inner h2{grid-column:auto}.brand-name{max-width:116px;white-space:normal;line-height:1.2}}