/* GUAGUA NET / responsive, no third-party assets */
:root{--base:#F6F3EC;--mint:#E8F4F2;--paper:#FFFCFA;--blush:#FDECEA;--ink:#1A2A28;--copy:#2C3A38;--sub:#5A6B68;--mute:#7A8A86;--green:#0E8A7D;--deep:#0A5F56;--red:#C62828;--line:rgba(14,138,125,.22);--shadow:0 14px 36px rgba(26,42,40,.10);--max:1160px}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:82px}body{margin:0;background:var(--base);color:var(--copy);font:16px/1.75 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;min-width:0}html.ui-locked,body.ui-locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}a,button,input{touch-action:manipulation}p{margin:0 0 1.05em}h1,h2,h3{line-height:1.35;color:var(--ink);margin:0 0 .6em}h1{font-size:clamp(28px,3vw,32px);letter-spacing:-.035em}h2{font-size:clamp(22px,2vw,26px)}h3{font-size:18px}img{max-width:100%;height:auto;vertical-align:middle}a:hover{color:var(--deep)}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--red);outline-offset:4px;border-radius:5px}[hidden]{display:none!important}.skip-link{position:fixed;top:-120px;left:16px;background:var(--deep);color:white;z-index:1000;padding:8px 15px}.skip-link:focus{top:10px;color:#fff}
.site-header{position:fixed;inset:0 0 auto 0;z-index:45;box-shadow:0 3px 18px rgba(26,42,40,.08)}.net-strip{height:16px;background:var(--green);color:var(--base);font-size:10px;line-height:16px;letter-spacing:.08em}.top-shell{max-width:var(--max);margin:0 auto;padding:0 18px;position:relative}.net-strip .top-shell{display:flex;justify-content:space-between;align-items:center;height:16px}.strip-word{font-weight:700;white-space:nowrap}.strip-search{padding:0 2px 0 8px;color:#fff;border:0;background:transparent;height:16px;font-size:11px;white-space:nowrap;position:relative;z-index:2}.strip-search::before{content:"";position:absolute;inset:-5px -8px -9px;z-index:-1}.strip-search span{font-size:14px}.readbar{height:54px;background:var(--paper);border-bottom:1px solid var(--line)}.readbar-inner{display:flex;gap:10px;align-items:center;height:54px}.top-logo{display:flex;align-items:center;max-width:46%;flex:0 1 auto;min-height:44px;min-width:0}.brand-mark{max-height:28px;width:auto;max-width:100%;object-fit:contain;object-position:left center}.brand-fallback{color:var(--deep);font-weight:900;letter-spacing:-.045em;font-size:23px;white-space:nowrap}.brand-fallback span{color:var(--red)}.menu-open{border:1px solid var(--line);color:var(--deep);background:var(--mint);border-radius:9px;min-height:44px;padding:0 14px;display:inline-flex;align-items:center;gap:9px;font-size:14px;font-weight:800;white-space:nowrap}.menu-open:hover{border-color:var(--green);background:#dbefeb}.menu-symbol{width:17px;display:grid;gap:3px}.menu-symbol b{display:block;height:2px;background:var(--deep);border-radius:2px}.top-spacer{flex:1}.app-shortcut{display:inline-flex;align-items:center;justify-content:center;gap:7px;background:var(--red);color:#fff;min-height:44px;padding:0 17px;border-radius:9px;font-size:14px;font-weight:750;white-space:nowrap}.app-shortcut:hover{background:#a51a1a;color:#fff}
main{padding-top:70px;min-height:64vh}.site-layout{display:grid;grid-template-columns:56px minmax(0,1fr);gap:18px;max-width:var(--max);padding:26px 16px 76px;margin:auto}.page-column{min-width:0}.side-rail{position:relative}.rail-items{position:sticky;top:94px;display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);border-radius:10px;overflow:hidden;box-shadow:0 6px 22px rgba(26,42,40,.04)}.rail-items a{text-align:center;padding:12px 3px;font-size:12px;line-height:1.25;min-height:44px;border-bottom:1px solid var(--line);display:grid;place-items:center;color:var(--deep);font-weight:700}.rail-items a:last-child{border-bottom:0}.rail-items a:hover{background:var(--mint)}.rail-items a[aria-current=page]{background:var(--green);color:#fff}
.eyebrow{display:inline-flex;gap:8px;align-items:center;color:var(--deep);font-size:12px;letter-spacing:.1em;font-weight:800;text-transform:uppercase;margin-bottom:12px}.eyebrow::before{content:"";width:18px;height:3px;background:var(--red);border-radius:3px}.panel,.article-shell,.content-card,.home-block,.home-lead,.story-row,.service-panel,.quote-panel{border:1px solid var(--line);border-radius:13px;background:var(--paper);box-shadow:0 5px 25px rgba(26,42,40,.035)}.home-lead{padding:20px}.home-lead-body{display:grid;grid-template-columns:minmax(0,1.03fr) minmax(0,.97fr);gap:22px;align-items:stretch}.lead-visual{min-height:255px;display:flex}.lead-visual .media-slot{height:100%;min-height:245px}.lead-side{display:grid;gap:8px}.lead-kicker{font-size:12px;color:var(--red);font-weight:800}.lead-brief{padding:9px 0;border-bottom:1px solid var(--line)}.lead-brief:last-child{border-bottom:0}.lead-brief strong{display:block;font-size:15px;line-height:1.5;color:var(--ink)}.lead-brief span{color:var(--sub);font-size:13px;line-height:1.5}.lead-intro{border-top:1px solid var(--line);margin-top:19px;padding:22px 3px 3px}.lead-intro p{max-width:850px;color:var(--sub)}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:17px}.action{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border-radius:8px;padding:7px 19px;background:linear-gradient(135deg,var(--green),var(--deep));font-size:14px;color:#fff;font-weight:750;white-space:nowrap}.action:hover{background:var(--deep);color:#fff}.action.secondary{background:var(--base);border:1px solid var(--green);color:var(--deep)}.action.secondary:hover{background:var(--mint)}.action.danger{background:var(--red)}.action.danger:hover{background:#a71b1b}
.media-slot{position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;isolation:isolate;width:100%;height:190px;background:linear-gradient(135deg,#e6f5ef 0%,#f9f3e9 48%,#fbede6 100%);border-radius:10px;max-width:100%;min-width:0}.media-slot::before{content:"";position:absolute;inset:auto -5% -30% 5%;height:75%;background:radial-gradient(ellipse at center,rgba(14,138,125,.12),transparent 68%);z-index:-1}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center;position:relative;z-index:2}.media-slot img[src$="网瓜-logo.webp"]{max-height:30px}.media-ornament{display:block;position:absolute;width:38%;height:54%;border:1px solid rgba(14,138,125,.23);border-radius:50% 49% 40% 45%;transform:rotate(-23deg);opacity:.65}.media-ornament i{position:absolute;border-radius:999px;display:block}.media-ornament i:nth-child(1){background:rgba(14,138,125,.16);inset:12% 28% 16% 12%}.media-ornament i:nth-child(2){background:rgba(198,40,40,.22);height:20%;width:40%;right:-13%;top:25%;transform:rotate(32deg)}.media-ornament i:nth-child(3){background:rgba(10,95,86,.12);height:10%;width:60%;bottom:-15%;left:10%;transform:rotate(12deg)}.media-slot.hero-slot{height:260px;max-height:260px}.media-slot.feature-slot{height:230px}.media-slot.card-slot{height:180px}.media-slot.app-slot{height:310px;max-height:420px}.media-slot.side-slot{height:215px}
.section{margin-top:38px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:12px;margin-bottom:17px}.section-head h2{margin:0}.section-head p{font-size:14px;color:var(--sub);margin:7px 0 0;max-width:740px}.more-link{font-weight:750;color:var(--deep);font-size:14px;white-space:nowrap}.more-link:hover{text-decoration:underline}.home-block{padding:22px}.feature-pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px;align-items:center}.feature-pair.reverse .media-slot{order:2}.feature-pair .copy strong{color:var(--deep)}.four-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.two-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.three-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.topic-card{border:1px solid var(--line);border-radius:12px;padding:13px;background:#fff;min-width:0}.topic-card h3{font-size:17px;margin:13px 0 7px}.topic-card p{font-size:14px;color:var(--sub);line-height:1.7}.topic-card .small-link{font-size:13px;font-weight:800;color:var(--deep)}.topic-card .media-slot{height:155px}.topic-card .media-slot.card-slot{height:160px}.topic-card:hover{border-color:var(--green)}.lined-list{border-top:1px solid var(--line)}.lined-item{display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:14px;align-items:start;padding:16px 0;border-bottom:1px solid var(--line)}.lined-item .index-number{font-size:25px;line-height:1;color:var(--green);font-weight:900;letter-spacing:-.06em}.lined-item h3{margin-bottom:6px}.lined-item p{color:var(--sub);font-size:14px;margin:0}.lined-item a{font-size:14px;color:var(--deep);font-weight:750;white-space:nowrap}.red-label{display:inline-block;background:var(--blush);color:var(--red);padding:3px 8px;border-radius:4px;font-size:12px;font-weight:750}.section-callout{background:var(--mint);border-left:4px solid var(--green);border-radius:0 10px 10px 0;padding:16px 20px}.section-callout p{margin:0}.editor-quote{border-left:3px solid var(--red);padding-left:18px;color:var(--copy);font-size:16px;font-style:normal}
.article-header{background:var(--paper);padding:30px 30px 28px;border:1px solid var(--line);border-radius:13px;box-shadow:0 6px 25px rgba(26,42,40,.03)}.article-header h1{max-width:810px}.article-intro{font-size:17px;line-height:1.8;color:var(--sub);max-width:950px;margin-bottom:0}.article-media{margin-top:20px}.article-media .media-slot{height:220px}.article-shell{padding:26px 30px;margin-top:18px;min-width:0}.chapter-stack{display:grid;gap:26px}.content-card{padding:21px;min-width:0}.content-card p{font-size:16px;line-height:1.78}.content-card p:last-child{margin-bottom:0}.chapter-title{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.chapter-number{font-size:12px;font-weight:850;letter-spacing:.02em;background:var(--mint);color:var(--deep);padding:5px 9px;border-radius:7px}.chapter-title h2{font-size:22px;margin:0}.chapter p{margin-top:13px}.layout-ledger .chapter{padding:20px 0;border-bottom:1px solid var(--line)}.layout-ledger .chapter:first-child{padding-top:0}.layout-ledger .chapter:last-child{border:0;padding-bottom:0}.layout-tiles .chapter-stack{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.layout-tiles .chapter{background:var(--base);padding:20px;border-radius:10px}.layout-tiles .chapter:nth-child(3n){grid-column:span 2;background:var(--mint)}.layout-tiles .chapter-title h2{font-size:21px}.layout-timeline .chapter-stack{border-left:2px solid var(--line);padding-left:24px}.layout-timeline .chapter{position:relative;padding-bottom:15px}.layout-timeline .chapter::before{content:"";width:12px;height:12px;border-radius:50%;background:var(--green);border:3px solid var(--paper);box-shadow:0 0 0 1px var(--green);position:absolute;left:-31px;top:9px}.layout-policy .chapter{border-left:4px solid var(--green);padding:6px 0 6px 20px}.layout-policy .chapter:nth-child(even){border-color:var(--red)}.layout-index .chapter{display:grid;grid-template-columns:132px minmax(0,1fr);gap:14px;padding-bottom:19px;border-bottom:1px solid var(--line)}.layout-index .chapter:last-child{border:0;padding-bottom:0}.layout-index .chapter-title{display:block}.layout-index .chapter-title h2{margin-top:8px}.layout-letter .chapter{background:#fffaf7;border:1px solid #f0e5dc;padding:25px;border-radius:5px 20px 5px 20px}.layout-letter .chapter:nth-child(even){background:var(--mint)}.layout-steps .chapter{display:grid;grid-template-columns:60px minmax(0,1fr);gap:14px}.layout-steps .chapter-title{display:block}.layout-steps .chapter-title .chapter-number{font-size:24px;background:none;padding:0}.layout-steps .chapter-title h2{margin-top:5px}.layout-steps .chapter p{margin:0}.article-ending{background:var(--mint);margin-top:24px;border-radius:11px;padding:18px 20px}.article-ending p:last-child{margin-bottom:0}.related-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.related-links a{font-size:14px;min-height:44px;display:inline-flex;align-items:center;border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:7px 14px;color:var(--deep);font-weight:750}.related-links a:hover{background:var(--mint)}.service-panel{padding:24px}.faq-item{border-bottom:1px solid var(--line);padding:14px 0}.faq-item:last-child{border:0}.faq-item summary{cursor:pointer;font-weight:800;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:10px}.faq-item summary::after{content:"+";font-size:23px;color:var(--green);line-height:1}.faq-item[open] summary::after{content:"−"}.faq-item p{margin:12px 0 0;color:var(--sub)}
.site-footer{background:var(--deep);color:#E8F4F2}.site-footer-inner{max-width:var(--max);margin:auto;padding:42px 25px 110px}.footer-top{display:flex;align-items:center;justify-content:space-between;gap:28px;border-bottom:1px solid rgba(232,244,242,.25);padding-bottom:24px}.footer-top p{font-size:13px;max-width:620px;margin:0;color:#d9ebe7}.footer-identity{display:flex;align-items:center;gap:12px;min-width:210px;color:#fff}.footer-identity:hover{color:#fff}.footer-identity .brand-fallback{color:#fff}.footer-identity .brand-fallback span{color:#ffb9b3}.footer-identity .brand-mark{max-width:90px;max-height:29px}.footer-identity strong{display:block;font-size:20px}.footer-identity small{display:block;font-size:11px;letter-spacing:.11em}.footer-cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:24px}.footer-col h2{font-size:14px;color:#fff;margin-bottom:12px}.footer-col a{display:block;color:#d3ece7;font-size:13px;line-height:2.6}.footer-col a:hover{color:#fff;text-decoration:underline}.footer-disclaimer{border-top:1px solid rgba(232,244,242,.20);margin-top:28px;padding-top:22px;font-size:13px;color:#dcefeb}.footer-bottom{display:flex;justify-content:space-between;gap:15px;font-size:12px;color:#c9e5df}.footer-bottom a{color:inherit}
.ui-shade{position:fixed;inset:0;z-index:60;background:rgba(12,33,30,.50);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .22s,visibility .22s}.ui-shade.is-open{opacity:1;visibility:visible;pointer-events:auto}.net-cabinet{position:fixed;z-index:61;top:70px;left:max(0px,calc((100vw - 1160px)/2 + 15px));width:min(320px,90vw);height:min(480px,calc(100dvh - 86px));background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 13px 13px;transform:translateX(-18px);opacity:0;visibility:hidden;pointer-events:none;transition:transform .2s,opacity .2s,visibility .2s;display:flex;flex-direction:column}.net-cabinet.is-open{transform:translateX(0);opacity:1;visibility:visible;pointer-events:auto}.cabinet-top{padding:12px 17px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:62px}.cabinet-brand{display:flex;align-items:center;gap:9px;color:var(--deep);font-size:15px}.cabinet-brand .brand-fallback{font-size:17px}.cabinet-brand .brand-mark{max-width:100px}.close-ui{height:44px;min-width:44px;background:var(--mint);color:var(--deep);border:0;border-radius:9px;font-size:25px;line-height:1;display:grid;place-items:center}.close-ui:hover{background:#d3e8e4}.cabinet-scroll{overflow-y:auto;overscroll-behavior:contain;padding:16px}.cabinet-group{margin-bottom:18px}.cabinet-group h2{font-size:13px;color:var(--deep);border-bottom:1px solid var(--line);padding-bottom:8px;margin:0 0 9px}.cabinet-links a{padding:7px 4px;display:block;border-bottom:1px dotted rgba(14,138,125,.15)}.cabinet-links a strong{display:block;font-size:14px;color:var(--ink)}.cabinet-links a span{font-size:12px;line-height:1.5;color:var(--sub);display:block;margin-top:1px}.cabinet-links a:hover{background:var(--mint)}.cabinet-extra{font-size:14px;font-weight:800;color:var(--deep)}
.search-panel{position:fixed;top:70px;right:max(12px,calc((100vw - 1160px)/2 + 16px));z-index:62;width:min(520px,calc(100vw - 24px));background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 13px 13px;padding:20px;visibility:hidden;opacity:0;transform:translateY(-10px);pointer-events:none;transition:transform .2s,opacity .2s,visibility .2s}.search-panel.is-open{visibility:visible;opacity:1;transform:translateY(0);pointer-events:auto}.search-top{display:flex;justify-content:space-between;align-items:center;gap:8px}.search-top h2{font-size:19px;margin:0}.search-label{display:block;font-size:13px;font-weight:800;margin:10px 0 5px;color:var(--deep)}.search-panel input{display:block;width:100%;height:48px;padding:0 14px;border-radius:8px;background:#fff;border:1px solid var(--green);font-size:14px;color:var(--ink)}.search-panel p{font-size:12px;color:var(--sub);margin:8px 0}.search-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:12px;max-height:min(290px,40vh);overflow:auto}.search-options a{display:flex;align-items:center;justify-content:space-between;gap:4px;background:var(--mint);border-radius:7px;padding:8px 12px;font-size:14px;min-height:44px;color:var(--deep);font-weight:800}.search-options a:hover{background:#d6eee8}.search-none{color:var(--red)!important}
.mobile-bottom{display:none}
@media(max-width:1050px){.side-rail{display:none}.site-layout{display:block;max-width:950px}.four-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-cols{gap:15px}.top-shell{max-width:950px}}
@media(max-width:700px){html{scroll-padding-top:79px}.top-shell{padding:0 16px}.site-layout{padding:17px 16px 54px}.page-column{width:100%}.top-logo{max-width:47%}.brand-mark{max-height:28px}.brand-fallback{font-size:19px}.menu-open{padding:0 10px;gap:6px}.app-shortcut{padding:0 11px;gap:3px;font-size:13px}.home-lead{padding:12px}.home-lead-body{display:flex;flex-direction:column;gap:13px}.lead-visual{min-height:0}.media-slot.hero-slot{height:230px}.lead-side{gap:0}.lead-brief{padding:8px 2px}.lead-intro{margin-top:13px;padding:17px 4px 5px}.section{margin-top:27px}.section-head{align-items:start;gap:8px}.section-head h2{font-size:22px}.home-block,.article-shell{padding:16px}.feature-pair{grid-template-columns:1fr}.feature-pair.reverse .media-slot{order:0}.four-grid,.two-grid,.three-grid{grid-template-columns:1fr}.topic-card{padding:13px}.topic-card .media-slot{height:185px}.article-header{padding:21px 18px}.article-intro{font-size:16px}.article-media .media-slot{height:195px}.layout-tiles .chapter-stack{grid-template-columns:1fr}.layout-tiles .chapter:nth-child(3n){grid-column:span 1}.layout-index .chapter,.layout-steps .chapter{display:block}.layout-index .chapter-title,.layout-steps .chapter-title{margin-bottom:7px}.layout-steps .chapter p{margin-top:8px}.lined-item{grid-template-columns:32px minmax(0,1fr);gap:10px}.lined-item a{grid-column:2}.lined-item .index-number{font-size:21px}.section-head .more-link{margin-top:6px}.footer-top{display:block}.footer-top p{margin:12px 0 0}.footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-bottom{flex-direction:column}.site-footer-inner{padding:35px 19px calc(90px + env(safe-area-inset-bottom))}.mobile-bottom{position:fixed;z-index:44;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));background:var(--paper);border-top:1px solid var(--line);height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -4px 18px rgba(26,42,40,.06)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;flex-direction:column;font-size:12px;color:var(--sub);gap:1px;min-width:0}.mobile-bottom a[aria-current=page]{background:var(--green);color:#fff}.bottom-dot{width:7px;height:7px;border-radius:50%;background:var(--green)}.mobile-bottom a[aria-current=page] .bottom-dot{background:#fff}.net-cabinet{left:0;top:70px;width:86vw;max-width:350px;height:calc(100dvh - 70px);border-radius:0;transform:translateX(-102%)}.search-panel{right:12px}.section-callout{padding:13px 15px}}
@media(max-width:360px){.top-shell{padding:0 13px}.site-layout{padding-left:16px;padding-right:16px}.brand-fallback{font-size:18px}.menu-open{font-size:12px;padding:0 9px}.app-shortcut{font-size:12px;padding:0 9px}.menu-symbol{width:14px}.top-logo{max-width:42%}.strip-word{font-size:9px}.home-lead{padding:11px}.section-head{display:block}.more-link{display:inline-block;margin:10px 0 0}.search-panel{right:8px;width:calc(100vw - 16px);padding:13px}.footer-cols{column-gap:12px}.article-shell{padding:14px}.related-links a{flex:1 1 45%;justify-content:center}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

.app-icon-caption{display:flex;align-items:center;gap:13px;margin-top:17px;font-size:13px;color:var(--sub)}.app-icon-caption .media-slot{width:64px;height:64px;flex:0 0 64px;border-radius:12px}
@media(max-width:700px){.home-lead{display:flex;flex-direction:column}.home-lead .lead-intro{order:-1;border-top:0;border-bottom:1px solid var(--line);margin-top:0;margin-bottom:12px;padding:6px 4px 17px}}