:root{--base:#F6FAFC;--white:#fff;--pale:#EAF6FA;--pale2:#EDF4F8;--cyan:#25C8D1;--sky:#25B6E8;--blue:#1787DB;--deep:#174B78;--title:#183A56;--text:#31485D;--muted:#687D8E;--border:#DCE9F0;--footer:#123653;--radius:18px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:32px}body{margin:0;background:var(--base);color:var(--text);font:16px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif;overflow-x:hidden}a{color:var(--deep);text-decoration-thickness:1px;text-underline-offset:4px}a:hover{color:#0877bb}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}button{font:inherit;cursor:pointer}img{max-width:100%;height:auto}h1,h2,h3{line-height:1.38;color:var(--title);margin:0 0 .7em;font-weight:750}h1{font-size:clamp(32px,3.2vw,42px);letter-spacing:-.035em}h2{font-size:26px}h3{font-size:20px}p{margin:0 0 1.15em}.wrap{width:min(100% - 56px,1180px);margin-inline:auto}.section{margin-block:58px}.section-heading{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:25px}.section-heading p{margin:0;max-width:540px;color:var(--muted)}.eyebrow{display:inline-block;font-size:13px;letter-spacing:.15em;color:#11799e;font-weight:800;margin-bottom:12px}.muted{color:var(--muted)}.lead{font-size:18px;max-width:800px;line-height:1.85}.tag{font-size:12px;font-weight:700;color:var(--deep);letter-spacing:.06em}.pill-link,.primary-link,.entry-link{display:inline-flex;align-items:center;justify-content:center;gap:12px;text-decoration:none;border-radius:9px;font-weight:700}.primary-link{background:var(--deep);color:#fff;padding:11px 20px}.primary-link:hover,.entry-link:hover{background:#226b9d;color:white}.text-link{font-weight:700}.site-header{position:relative;z-index:10;background:#fff;border-bottom:1px solid var(--border)}.toolbar{height:72px;display:flex;align-items:center;gap:24px}.brand{text-decoration:none;display:flex;align-items:center;flex-shrink:0;min-width:0}.brand img{display:block;max-height:38px;width:auto;object-fit:contain}.brand-text{font-size:23px;line-height:1.1;color:var(--deep);font-weight:900;white-space:nowrap}.brand-text small{display:block;font-size:9px;letter-spacing:.16em;color:var(--muted)}.toolbar-note{color:var(--muted);font-size:14px;margin-left:auto}.entry-link{background:var(--deep);color:#fff;padding:8px 18px;min-height:42px;white-space:nowrap;font-size:14px}.desktop-nav{background:var(--deep)}.nav-inner{display:flex;justify-content:space-between;gap:14px}.nav-inner>a{color:#e6f7ff;display:inline-flex;align-items:center;justify-content:center;min-height:48px;white-space:nowrap;text-decoration:none;font-size:14px;padding:0 8px;border-bottom:3px solid transparent}.nav-inner>a:hover,.nav-inner>a.is-current{color:#fff;border-color:var(--cyan);font-weight:750;background:rgba(255,255,255,.09)}.menu-toggle{display:none;background:transparent;border:0;width:40px;height:40px;padding:10px;flex-direction:column;justify-content:space-evenly;align-items:center}.menu-toggle span{width:22px;height:2px;border-radius:2px;background:var(--title)}.skip-link{position:absolute;top:-100px;left:12px;background:var(--deep);padding:8px;color:white;z-index:200}.skip-link:focus{top:8px}.drawer-overlay,.drawer{display:none}.home-shortcuts{border-bottom:1px solid var(--border);background:#fff}.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;padding:14px 0}.quick-line{display:flex;gap:10px;flex-wrap:wrap;align-items:center;font-size:13px}.quick-line strong{color:var(--title)}.quick-line a{text-decoration:none;color:var(--muted)}.quick-line a:hover{text-decoration:underline}.home-hero{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:48px;align-items:center;padding-block:52px 18px}.hero-copy p{max-width:610px}.hero-copy h1{max-width:640px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:27px}.hero-actions .text-link{align-self:center}.media{display:flex;justify-content:center;align-items:center;width:100%;min-width:0;overflow:hidden;border-radius:14px;background:var(--pale);border:1px solid var(--border)}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media-placeholder{width:60%;height:45%;background:linear-gradient(135deg,#cce8ee,#f7fcfe);border-radius:14px;opacity:.7}.media--hero{height:clamp(250px,26vw,330px)}.media--feature{height:250px}.media--card{height:170px}.media--banner{height:220px}.media--mobile{height:350px;max-width:320px}.media--portrait{max-width:350px;margin-inline:auto}.media--wide{height:180px}.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.topic-item{display:flex;flex-direction:column;gap:9px;padding:22px 22px 18px;border:1px solid var(--border);background:#fff;border-radius:var(--radius);text-decoration:none;min-height:164px;transition:border-color .2s,transform .2s}.topic-item:hover{border-color:var(--sky);transform:translateY(-2px)}.topic-item strong{font-size:18px;color:var(--title)}.topic-item span{color:var(--muted);font-size:14px;line-height:1.65}.topic-item em{font-style:normal;color:var(--blue);font-size:13px;margin-top:auto}.editorial{display:grid;grid-template-columns:2fr 1fr;gap:22px}.story-feature{background:var(--pale);padding:36px;border-radius:var(--radius)}.story-feature h3{font-size:25px}.story-side{display:grid;gap:18px}.story-mini{background:#fff;padding:24px;border:1px solid var(--border);border-radius:var(--radius)}.story-mini h3{font-size:19px}.split{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center}.split.reverse .media{order:-1}.light-band{background:var(--pale);padding-block:46px}.culture-row{display:grid;grid-template-columns:42% 1fr;gap:38px;align-items:center}.rule-intros{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.rule-intros>article{padding:24px 26px;background:#fff;border-left:3px solid var(--cyan);border-radius:0 12px 12px 0}.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;list-style:none;padding:0;margin:22px 0}.steps li{position:relative;background:var(--pale2);padding:24px;border-radius:12px}.steps li:before{counter-increment:step;content:counter(step,decimal-leading-zero);display:block;font-size:23px;font-weight:800;color:var(--blue);margin-bottom:12px}.editor-note{border-top:1px solid var(--border);padding:25px 0 40px;font-size:14px;color:var(--muted)}.page-intro{padding:48px 0 24px;border-bottom:1px solid var(--border)}.page-intro h1{font-size:35px;max-width:970px}.page-intro p{max-width:840px}.content-block{margin-block:45px}.content-block>p{max-width:850px}.article-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(190px,240px);gap:55px;align-items:start}.article-body{max-width:780px}.article-body p{line-height:1.85}.article-body h2{margin-top:38px}.aside-panel{background:var(--pale);padding:25px;border-radius:14px;position:sticky;top:25px}.aside-panel ul{padding-left:20px;margin:0}.aside-panel li{margin:8px 0}.number-list{counter-reset:items;padding:0;list-style:none;display:grid;gap:14px}.number-list li{counter-increment:items;background:#fff;border:1px solid var(--border);border-radius:12px;padding:20px 24px;display:grid;grid-template-columns:36px 1fr;gap:10px}.number-list li:before{content:counter(items,decimal-leading-zero);color:var(--blue);font-weight:800;font-size:21px}.number-list strong{display:block;color:var(--title)}.comparison{overflow-x:auto;border:1px solid var(--border);border-radius:12px;background:#fff}.comparison table{width:100%;border-collapse:collapse;min-width:580px;font-size:15px}.comparison th,.comparison td{padding:14px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--border)}.comparison tr:last-child td{border-bottom:0}.comparison th{background:var(--pale2);font-weight:750;color:var(--title)}.comparison td:first-child{font-weight:700;color:var(--title)}.two-cards,.three-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.three-cards{grid-template-columns:repeat(3,minmax(0,1fr))}.info-card{padding:24px;border:1px solid var(--border);background:#fff;border-radius:14px}.info-card p:last-child{margin-bottom:0}.info-card h3{margin-bottom:9px}.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.timeline article{border-top:3px solid var(--cyan);padding:18px 8px 0}.project-matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.project-matrix article{background:#fff;border:1px solid var(--border);padding:28px;border-radius:16px}.project-matrix .meta{font-size:12px;color:#0c83a3;font-weight:800;letter-spacing:.12em}.gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.gallery figure{margin:0;background:#fff;border:1px solid var(--border);padding:16px;border-radius:16px}.gallery figcaption{padding:12px 4px 2px;font-size:14px;line-height:1.75}.gallery strong{display:block;color:var(--title);font-size:17px}.toc{display:flex;flex-wrap:wrap;gap:9px;padding:14px 0}.toc a{background:var(--pale);border:1px solid var(--border);text-decoration:none;padding:8px 15px;border-radius:8px;font-size:14px;font-weight:700}.rule-section{padding-top:20px;border-top:1px solid var(--border)}.faq-list{border-top:1px solid var(--border)}.faq-list details{border-bottom:1px solid var(--border);background:#fff}.faq-list summary{cursor:pointer;list-style:none;padding:17px 21px;color:var(--title);font-weight:750}.faq-list summary:after{content:'+';float:right;color:var(--blue);font-size:22px;line-height:1.3}.faq-list details[open] summary:after{content:'−'}.faq-list summary::-webkit-details-marker{display:none}.faq-list details p{padding:0 21px 20px;margin:0}.related-links{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.related-links a{display:flex;justify-content:space-between;align-items:center;background:#fff;padding:18px 21px;border:1px solid var(--border);border-radius:10px;text-decoration:none;font-weight:750}.related-links span{color:var(--blue)}.service-nav{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.service-nav a{background:#fff;border:1px solid var(--border);border-radius:10px;padding:16px;text-decoration:none}.site-footer{background:var(--footer);color:#eaf7ff;margin-top:45px;padding-top:52px;font-size:14px}.footer-grid{display:grid;grid-template-columns:1.3fr 1.1fr 1fr;gap:55px}.site-footer h2{color:white;font-size:17px}.footer-brand{display:block;color:#fff;font-size:23px}.footer-brand span{font-size:11px;letter-spacing:.1em;display:block}.site-footer p{color:#cfe1ed}.footer-links{display:grid;grid-template-columns:repeat(2,1fr);gap:5px 15px}.site-footer a{color:#eaf7ff;text-decoration:none}.site-footer a:hover{text-decoration:underline}.footer-bottom{border-top:1px solid #45657c;margin-top:35px;padding-block:18px;display:flex;justify-content:space-between;gap:15px;color:#bdd4e4}.mobile-bottom{display:none}.back-top{position:fixed;bottom:24px;right:23px;border:none;border-radius:50%;width:42px;height:42px;background:var(--deep);color:#fff;z-index:9;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s}.back-top.is-visible{opacity:1;visibility:visible;pointer-events:auto}
@media(max-width:980px){.wrap{width:min(100% - 44px,1180px)}.toolbar{height:64px;justify-content:space-between}.desktop-nav,.toolbar-note{display:none}.menu-toggle{display:flex}.brand img{max-height:30px}.entry-link{min-height:40px;padding:7px 14px}.drawer-overlay{display:block;position:fixed;inset:0;background:rgba(12,34,49,.45);z-index:60;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.drawer-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.drawer{display:block;position:fixed;z-index:61;left:0;top:0;bottom:0;width:min(86vw,344px);background:#fff;overflow-y:auto;transform:translateX(-101%);visibility:hidden;transition:transform .23s,visibility .23s;box-shadow:10px 0 28px #09263924}.drawer.is-open{transform:translateX(0);visibility:visible}.drawer-open{overflow:hidden}.drawer-head{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);padding:14px 22px;color:var(--title)}.drawer-close{border:0;background:transparent;font-size:30px;line-height:1;min-width:40px;min-height:40px;color:var(--deep)}.drawer-group{padding:15px 22px;border-bottom:1px solid var(--border)}.drawer-group h2{font-size:13px;color:var(--muted);margin:0 0 9px}.drawer-group a{display:block;padding:8px 0;color:var(--title);text-decoration:none}.quick-grid{grid-template-columns:1fr;gap:4px}.home-hero{gap:25px}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.section{margin-block:43px}.footer-grid{gap:28px}.article-layout{grid-template-columns:minmax(0,1fr)}.aside-panel{position:static;max-width:780px}}
@media(max-width:760px){.home-hero,.split,.culture-row,.editorial,.gallery{grid-template-columns:1fr}.home-hero{padding-top:36px}.home-hero .media{order:2}.split.reverse .media{order:0}.project-matrix,.three-cards,.timeline,.rule-intros{grid-template-columns:1fr}.two-cards{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.related-links{grid-template-columns:1fr}.section-heading{display:block}.section-heading p{margin-top:6px}.page-intro{padding-top:33px}}
@media(max-width:640px){body{font-size:15px;line-height:1.78}.wrap{width:calc(100% - 32px)}h1{font-size:29px}h2{font-size:22px}h3{font-size:18px}.page-intro h1{font-size:27px}.lead{font-size:16px}.toolbar{gap:7px;height:62px}.brand-text{font-size:18px}.brand-text small{font-size:7px}.entry-link{font-size:12px;padding:6px 10px;min-height:39px}.home-hero{display:flex;flex-direction:column;align-items:stretch;gap:22px}.home-hero .media{order:0}.hero-copy{order:1}.media--hero{height:200px}.media--feature{height:180px}.media--card{height:145px}.media--banner,.media--wide{height:150px}.media--mobile{height:290px;max-width:250px}.section{margin-block:34px}.story-feature{padding:24px}.story-feature h3{font-size:21px}.topic-grid{gap:10px}.topic-item{padding:15px;min-height:165px}.topic-item strong{font-size:16px}.topic-item span{font-size:13px}.steps{gap:9px}.steps li{padding:15px}.steps li:before{font-size:19px}.info-card,.project-matrix article{padding:19px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.footer-bottom{flex-direction:column;gap:3px}.site-footer{padding-top:35px;margin-top:30px}.mobile-bottom{position:fixed;bottom:0;left:0;right:0;z-index:20;background:#fff;border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(4,1fr);padding-bottom:env(safe-area-inset-bottom,0px);box-shadow:0 -5px 20px #1639540d}.mobile-bottom a{display:block;padding:9px 0;text-align:center;color:var(--deep);font-size:13px;text-decoration:none;font-weight:700}.mobile-bottom a[aria-current]{border-top:2px solid var(--cyan);padding-top:7px}body{padding-bottom:calc(50px + env(safe-area-inset-bottom,0px))}.back-top{bottom:calc(70px + env(safe-area-inset-bottom,0px))}.service-nav{grid-template-columns:1fr}.quick-line{font-size:12px}.light-band{padding-block:30px}}
@media(max-height:480px) and (max-width:640px){.mobile-bottom{position:static}body{padding-bottom:0}.back-top{bottom:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
