/* Tutite — foundation */
:root{--bg:#091724;--surface:#102331;--surface-raised:#152c3a;--ink:#edf5f7;--muted:#a3b9c4;--accent:#71efd0;--blue:#859dff;--line:rgba(182,215,227,.14);--radius:22px;--max:1240px;color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.8}a{color:inherit;text-decoration:none}button{font:inherit}img{display:block;max-width:100%;height:auto}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.35;letter-spacing:-.035em}h2{font-size:clamp(26px,3vw,36px)}h3{font-size:20px}p{color:var(--muted)}a,button,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}::selection{background:#387f77;color:white}.site-main{max-width:var(--max);margin:auto;padding:0 28px}.eyebrow{font-size:11px;letter-spacing:.14em;font-weight:650;color:var(--accent);text-transform:uppercase}.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px #71efd078;margin-right:9px}.skip-link{position:absolute;left:18px;top:-70px;z-index:100;background:var(--accent);color:var(--bg);padding:12px}.skip-link:focus{top:12px}
/* Header and navigation */
.masthead{position:sticky;top:0;z-index:30;background:rgba(9,23,36,.94);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.header-inner{max-width:var(--max);padding:20px 28px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:flex;gap:11px;align-items:center;flex-shrink:0}.brand>span{font-weight:750;font-size:20px;line-height:1.15}.brand small{display:block;color:var(--muted);font-size:9px;letter-spacing:.16em;margin-top:8px}.site-nav{display:flex;gap:25px;align-items:center}.site-nav>a{font-size:13px;white-space:nowrap;color:var(--muted);transition:color .2s}.site-nav>a:hover,.site-nav>a[aria-current]{color:var(--accent)}.site-nav>a[aria-current]:after{content:"";display:block;width:15px;height:2px;margin-top:3px;background:var(--accent)}.menu-toggle{display:none;border:1px solid var(--line);border-radius:9px;padding:8px 12px;background:var(--surface);color:var(--ink);align-items:center;gap:9px}.menu-lines{width:16px;height:10px;border-top:1px solid currentColor;border-bottom:1px solid currentColor}.tutite-govcn-head{box-shadow:0 8px 30px #00000012}
/* Hero */
.network-hero{display:grid;grid-template-columns:.92fr 1.08fr;gap:45px;align-items:center;padding:85px 0 70px;position:relative}.hero-copy{position:relative;z-index:2}.hero-copy h1{font-size:clamp(37px,4.3vw,58px);margin:24px 0 25px;letter-spacing:-.055em;line-height:1.2}.hero-copy h1>span{display:block;font-size:.51em;font-weight:500;color:var(--muted);margin-top:12px;letter-spacing:-.02em}.hero-lead{font-size:clamp(25px,2.8vw,36px);color:var(--ink);line-height:1.55;font-weight:550;letter-spacing:-.03em}.hero-description{margin-top:20px;font-size:14px;line-height:1.95}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;gap:20px;padding:13px 21px;border-radius:9px;font-size:13px;font-weight:650;border:1px solid transparent;transition:background .2s,transform .2s}.primary{background:var(--accent);color:#092921;box-shadow:0 4px 24px #71efd013}.primary:hover{background:#a1f9e3;transform:translateY(-2px)}.secondary{border-color:var(--line);background:#ffffff04;color:var(--ink)}.secondary:hover{background:var(--surface-raised)}.hero-platforms{margin-top:30px;font-size:10px;letter-spacing:.14em;color:var(--muted)}.hero-platforms span{color:#476570;margin:0 11px}.hero-visual{position:relative;padding-bottom:70px}.hero-visual>img{width:100%;height:440px;object-fit:cover;object-position:57% center;border-radius:26px;border:1px solid #9be7e024;box-shadow:0 30px 70px #00000038}.image-note{position:absolute;top:20px;left:20px;right:20px;display:flex;align-items:center;font-size:10px;background:#071522b0;backdrop-filter:blur(12px);padding:10px 14px;border:1px solid var(--line);border-radius:8px}.image-note b{margin-left:auto;font-weight:400;color:var(--muted)}.floating-note{position:absolute;bottom:15px;left:-25px;right:45px;padding:24px 28px;background:linear-gradient(120deg,#17384deb,#102a37f2);backdrop-filter:blur(16px);border:1px solid #71efd030;border-radius:17px;box-shadow:0 15px 40px #00000030}.floating-note span{font-size:9px;letter-spacing:.15em;color:var(--accent)}.floating-note strong{font-size:23px;display:block;margin:7px 0}.floating-note small{color:var(--muted);font-size:11px}.tutite-govcn-xwave:before{content:"";position:absolute;z-index:-1;right:0;top:30px;width:60%;height:85%;background:radial-gradient(ellipse,#19495d45,transparent 70%)}
/* Home sections */
.brand-band{display:grid;grid-template-columns:.55fr 1fr 1fr;gap:35px;align-items:start;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:45px 0}.brand-band h2{font-size:26px}.brand-band p{font-size:13px;line-height:1.9}.brand-band a{display:block;color:var(--accent);margin-top:14px}.tutite-govcn-node{background:linear-gradient(90deg,#71efd004,transparent)}.block{padding:76px 0 4px}.section-heading{margin-bottom:30px}.section-heading h2{margin-top:12px}.device-deck{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.device-tile{padding:28px 20px;background:var(--surface);border-right:1px solid var(--line);transition:background .2s}.device-tile:last-child{border:0}.device-tile:hover{background:var(--surface-raised)}.device-symbol{font-size:30px;color:var(--accent);line-height:1}.device-tile h3{font-size:17px;margin:18px 0 9px}.device-tile p{font-size:12px;min-height:48px}.text-link{color:var(--accent);font-size:12px;display:inline-block;margin-top:18px}.scenario-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:45px;align-items:center}.scene-photo img{border-radius:var(--radius);height:400px;width:100%;object-fit:cover}.scenario-list{display:grid;grid-template-columns:1fr 1fr;gap:25px}.scenario-list h3{font-size:18px;margin-bottom:10px}.scenario-list p{font-size:13px}.route-steps{padding:0;margin:0;list-style:none;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:22px}.route-steps li{position:relative;border-top:1px solid var(--line);padding:20px 0}.route-steps li>span{font-size:30px;color:var(--accent);font-weight:300}.route-steps h3{font-size:16px;margin:13px 0 9px}.route-steps p{font-size:12px}.tutite-govcn-route li:before{content:"";position:absolute;left:0;top:-2px;width:25px;height:3px;background:var(--accent)}.knowledge-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:18px}.knowledge-grid a{position:relative;display:block;min-height:210px;padding:30px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}.knowledge-grid span{font-size:11px;color:var(--accent)}.knowledge-grid h3{margin:15px 0 12px}.knowledge-grid p{font-size:13px;padding-right:12px}.knowledge-grid b{position:absolute;right:22px;bottom:19px;color:var(--accent);font-weight:400}.reading-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.reading-card{border-radius:var(--radius);overflow:hidden;background:var(--surface);border:1px solid var(--line);transition:transform .2s,border-color .2s}.reading-card:hover{transform:translateY(-4px);border-color:#71efd04a}.reading-card img{width:100%;aspect-ratio:16/9;object-fit:cover}.reading-card>div{padding:25px}.reading-card h3{font-size:20px;margin:12px 0}.reading-card p{font-size:13px}.tutite-govcn-guide{box-shadow:0 12px 30px #0000000c}.optimization-panel{display:grid;grid-template-columns:1.1fr 1fr;overflow:hidden;border-radius:var(--radius);border:1px solid var(--line)}.optimization-panel>div:last-child{padding:40px}.optimization-panel img{height:100%;object-fit:cover}.optimization-panel h3{font-size:24px}.optimization-panel ul{padding-left:18px;color:var(--muted);font-size:13px;margin:20px 0 25px}.optimization-panel li{margin:9px 0}.tutite-govcn-glow{background:linear-gradient(145deg,#173540,#102330)}.question-list{border-top:1px solid var(--line)}.question-list details{border-bottom:1px solid var(--line)}.question-list summary{list-style:none;display:flex;gap:20px;align-items:center;padding:23px 4px;cursor:pointer;font-size:16px}.question-list summary::-webkit-details-marker{display:none}.question-list summary>span{font-size:11px;color:var(--accent)}.question-list summary>b{margin-left:auto;font-size:22px;color:var(--muted);font-weight:300;transition:transform .2s}.question-list details[open] summary>b{transform:rotate(45deg)}.question-list details p{max-width:850px;margin:0 40px 25px;line-height:1.95;font-size:14px}.tutite-govcn-faq3 details[open]{background:#71efd003}.more-link{margin-top:24px}.closing-banner{margin:80px 0;padding:50px 40px;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(100deg,#173c43,#142536);display:grid;grid-template-columns:1fr auto;align-items:center;gap:15px}.closing-banner>.eyebrow{grid-column:1/-1}.closing-banner h2{font-size:30px}
/* Inner pages and articles */
.breadcrumbs{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:30px 0;color:var(--muted);font-size:12px}.breadcrumbs b{font-weight:400;color:#516b79}.breadcrumbs a:hover{color:var(--accent)}.page-intro{display:grid;grid-template-columns:1.15fr 1fr;gap:50px;align-items:center;padding:20px 0 55px;border-bottom:1px solid var(--line)}.page-intro h1{font-size:clamp(30px,3.5vw,46px);margin:20px 0}.page-subtitle{font-size:21px;color:var(--ink);margin-bottom:13px}.page-intro>div>p:not(.page-subtitle){font-size:14px}.page-intro img{width:100%;border-radius:var(--radius);aspect-ratio:16/10;object-fit:cover}.article-meta{margin-top:20px;font-size:11px!important}.tutite-govcn-panel7{border-left:3px solid #71efd03d;padding-left:24px}.tutite-govcn-device{background:radial-gradient(ellipse at 20% 20%,#71efd007,transparent 65%)}.inner-content{padding:45px 0 0}.inner-content>.device-deck{margin:35px 0}.intro-text{margin-bottom:25px;font-size:16px}.prose{max-width:820px;margin:40px auto;font-size:16px;line-height:2}.prose h2{font-size:26px;margin:38px 0 17px}.prose h3{font-size:19px;margin:23px 0 14px}.prose p{margin-bottom:20px}.prose li{color:var(--muted);margin:7px 0}.prose a,.notice a{color:var(--accent);text-decoration:underline;text-underline-offset:4px}.notice{border:1px solid var(--line);border-left:3px solid var(--accent);padding:30px 35px;background:var(--surface);border-radius:14px}.notice h2{font-size:25px;margin:10px 0 15px}.notice p{max-width:850px;font-size:14px}.inner-content .notice:last-child{margin-top:35px}.editorial-intro{max-width:720px;margin-bottom:35px}.editorial-intro h2{margin:15px 0}.article-layout{display:grid;grid-template-columns:245px minmax(0,1fr);gap:65px;padding-top:50px}.article-toc{align-self:start;position:sticky;top:115px;border-left:1px solid var(--line);padding:5px 20px}.article-toc ol{padding:0 0 0 17px;color:var(--muted);font-size:12px}.article-toc li{margin:13px 0}.article-toc a:hover{color:var(--accent)}.article-body{margin:0;max-width:none}.article-body section:first-child h2{margin-top:0}.article-body section{scroll-margin-top:115px}.related-section{padding-bottom:70px}
/* Footer */
.site-footer{border-top:1px solid var(--line);background:#07121d;padding:55px max(28px,calc((100% - 1184px)/2)) 25px}.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:60px}.footer-main>div>p{margin-top:20px;font-size:12px}.footer-main h2,.friend-area h2{font-size:13px;letter-spacing:0;margin-bottom:15px}.footer-main>div>a:not(.brand){display:block;font-size:12px;color:var(--muted);margin:9px 0}.footer-main a:hover{color:var(--accent)}.friend-area{padding:28px 0;border-top:1px solid var(--line);margin-top:35px}.friend-area>div{display:flex;flex-wrap:wrap;gap:10px 24px}.friend-area a{font-size:11px;color:var(--muted)}.friend-area a:hover{color:var(--accent)}.footer-legal{border-top:1px solid var(--line);padding-top:22px;margin-top:30px;font-size:10px}.footer-legal p{margin-bottom:8px}.footer-legal span{margin-left:20px}.footer-legal small{font-size:10px;color:#708d9e}.tutite-govcn-footer{box-shadow:inset 0 1px #ffffff02}
/* Tablet and mobile */
@media(min-width:1400px){.network-hero{padding-top:100px;padding-bottom:85px}.hero-visual>img{height:470px}}
@media(max-width:1080px){.site-nav{gap:17px}.site-nav>a{font-size:12px}.header-inner{gap:20px}.network-hero{gap:30px}.hero-copy h1{font-size:42px}.hero-visual>img{height:420px}.device-tile{padding:23px 15px}.brand-band{grid-template-columns:.5fr 1fr 1fr;gap:25px}.article-layout{gap:35px;grid-template-columns:210px minmax(0,1fr)}}
@media(max-width:900px){.menu-toggle{display:flex}.header-inner{flex-wrap:wrap;padding-top:15px;padding-bottom:15px;gap:0}.site-nav{width:100%;display:grid;grid-template-columns:repeat(2,1fr);padding:20px 0 5px;gap:4px}.site-nav a{padding:10px 12px;font-size:14px;border-radius:8px}.site-nav a[aria-current]{background:var(--surface)}.site-nav>a[aria-current]:after{display:none}html.js .site-nav{display:none}html.js .site-nav.is-open{display:grid}.network-hero{gap:25px;padding-top:50px;grid-template-columns:1fr 1fr}.hero-copy h1{font-size:36px}.hero-lead{font-size:25px}.hero-visual>img{height:400px}.floating-note{left:-10px;right:10px;padding:20px}.floating-note strong{font-size:19px}.brand-band{grid-template-columns:1fr 1fr}.brand-band>.eyebrow{grid-column:1/-1}.device-deck{grid-template-columns:repeat(3,1fr)}.device-tile{border-bottom:1px solid var(--line)}.reading-grid{gap:16px}.reading-card>div{padding:20px}.reading-card h3{font-size:18px}.scenario-layout{gap:25px}.scene-photo img{height:390px}.knowledge-grid{grid-template-columns:1fr}.knowledge-grid a{min-height:0}.optimization-panel>div:last-child{padding:28px}.page-intro{gap:30px}.article-layout{grid-template-columns:1fr;gap:28px}.article-toc{position:static;padding:15px 20px;background:var(--surface);border-radius:12px}.article-toc ol{display:grid;grid-template-columns:1fr 1fr;gap:0 25px}.footer-main{gap:30px}}
@media(max-width:640px){.site-main{padding:0 20px}.header-inner{padding-left:20px;padding-right:20px}.brand>span{font-size:18px}.brand img{width:35px;height:35px}.network-hero{grid-template-columns:1fr;gap:35px;padding:42px 0 30px}.hero-copy h1{font-size:43px;margin-top:19px}.hero-copy h1>span{font-size:22px}.hero-lead{font-size:28px}.hero-description{font-size:13px}.hero-platforms{margin-top:23px}.hero-visual{padding-bottom:55px}.hero-visual>img{height:auto;aspect-ratio:1.22;object-position:62% center;border-radius:19px}.floating-note{left:15px;right:15px;bottom:0;padding:19px 22px}.image-note{left:12px;right:12px;top:12px;padding:8px;font-size:9px}.brand-band{grid-template-columns:1fr;padding:30px 0;gap:20px}.brand-band h2{font-size:26px}.block{padding-top:52px}.section-heading{margin-bottom:25px}.section-heading h2{font-size:27px}.device-deck{grid-template-columns:1fr 1fr}.device-tile{padding:24px 18px}.device-tile:last-child{grid-column:1/-1}.device-tile p{min-height:0}.scenario-layout{grid-template-columns:1fr;gap:30px}.scene-photo img{height:auto;aspect-ratio:1.5}.scenario-list{gap:22px}.route-steps{grid-template-columns:1fr;gap:0}.route-steps li{display:grid;grid-template-columns:45px 1fr;column-gap:18px;padding:20px 0}.route-steps li>span{grid-row:1/3;align-self:start}.route-steps h3{margin:0 0 6px}.route-steps p{font-size:13px}.reading-grid{grid-template-columns:1fr;gap:24px}.reading-card>div{padding:23px}.reading-card h3{font-size:21px}.optimization-panel{grid-template-columns:1fr}.optimization-panel img{aspect-ratio:16/10;width:100%}.optimization-panel>div:last-child{padding:27px}.question-list summary{font-size:14px;gap:12px;padding:21px 0}.question-list details p{margin-left:27px;margin-right:15px;font-size:13px}.question-list summary>b{flex-shrink:0}.closing-banner{margin:55px 0;padding:30px 25px;grid-template-columns:1fr;gap:20px}.closing-banner h2{font-size:27px}.closing-banner .button{justify-self:start}.breadcrumbs{font-size:11px;gap:8px;padding:22px 0}.page-intro{grid-template-columns:1fr;gap:25px;padding-bottom:30px}.page-intro h1{font-size:33px}.page-subtitle{font-size:20px}.page-intro img{aspect-ratio:16/10}.page-intro.tutite-govcn-panel7{padding-left:0;border-left:0}.inner-content{padding-top:30px}.notice{padding:25px 22px}.notice h2{font-size:23px}.prose{font-size:15px;margin-top:30px}.prose h2{font-size:23px}.article-layout{padding-top:30px}.article-toc ol{grid-template-columns:1fr}.article-body{margin-top:0}.footer-main{grid-template-columns:1fr 1fr;gap:30px}.footer-main>div:first-child{grid-column:1/-1}.site-footer{padding:40px 20px 25px}.footer-legal span{display:block;margin:8px 0 0}.friend-area>div{gap:12px 19px}.related-section{padding-bottom:45px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}