:root{--bg:#EEF5F5;--paper:#FAFDFC;--soft:#DCEBEC;--pale:#E7F1F1;--ink:#103C46;--text:#294F57;--muted:#58757B;--faint:#7B9094;--teal:#267D83;--green:#4E9E94;--night:#102C33;--gold:#C4A66A;--white:#F8FBFB;--line:rgba(16,60,70,.14);--line2:rgba(38,125,131,.34);--shadow:0 12px 30px rgba(16,44,51,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:116px}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.8;overflow-x:hidden}body.panel-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.wrap{width:min(1180px,calc(100% - 40px));margin:auto}.brand-strip{background:var(--night);color:var(--white);font-size:14px}.brand-strip-inner{height:36px;display:flex;align-items:center;justify-content:space-between}.brand-strip-name{letter-spacing:.03em}.brand-strip-links{display:flex;gap:20px;align-items:center}.text-button{border:0;background:transparent;color:inherit;padding:5px 0;cursor:pointer}.main-nav-wrap{background:var(--white);position:sticky;top:0;z-index:30;border-bottom:1px solid var(--line)}.main-nav{height:66px;display:grid;grid-template-columns:minmax(170px,1fr) auto minmax(170px,1fr);gap:24px;align-items:center}.site-logo{display:inline-flex;align-items:center;font-size:22px;font-weight:700;color:var(--ink);width:max-content}.logo-image{height:36px;width:auto;max-width:220px;object-fit:contain;object-position:center}.primary-nav{display:flex;gap:26px;align-items:center;font-size:15px}.primary-nav a,.topic-band a{position:relative;padding:8px 2px;color:var(--muted)}.primary-nav a.is-current,.topic-band a.is-current{color:var(--ink)}.primary-nav a.is-current:after,.topic-band a.is-current:after{content:"";position:absolute;left:0;right:0;bottom:1px;height:2px;background:var(--teal);border-radius:2px}.nav-actions{justify-self:end;display:flex;gap:10px}.nav-action{min-height:44px;padding:0 14px;border-radius:10px;border:1px solid var(--line2);background:transparent;color:var(--ink);cursor:pointer}.nav-action.strong{background:var(--teal);color:white;border-color:var(--teal)}.topic-band{background:var(--pale);border-bottom:1px solid var(--line)}.topic-band-inner{height:42px;display:flex;align-items:center;justify-content:center;gap:27px;font-size:14px}.site-header{position:relative;z-index:20}main{min-height:50vh}.section{padding:70px 0}.section.compact{padding:48px 0}.paper{background:var(--paper)}.night{background:var(--night);color:var(--white)}.eyebrow{display:inline-block;color:var(--teal);font-weight:700;font-size:13px;letter-spacing:.08em;text-transform:uppercase}.night .eyebrow{color:#b9d7d4}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}.section-head h2{margin:0;color:var(--ink);font-size:clamp(22px,2.5vw,26px);line-height:1.3}.night .section-head h2{color:var(--white)}.section-head p{margin:0;max-width:650px;color:var(--muted)}.night .section-head p{color:#d3e1df}.hero-cover{padding:34px 0 56px}.cover-image{width:100%;min-height:150px;max-height:320px;display:flex;align-items:center;justify-content:center;background:var(--paper);border:1px solid var(--line);border-radius:16px}.cover-image img{width:100%;height:clamp(220px,30vw,320px);object-fit:contain;object-position:center}.cover-copy{padding:30px 0 0;max-width:820px}.cover-copy h1,.inner-hero h1{font-size:clamp(28px,3.4vw,34px);line-height:1.25;color:var(--ink);margin:6px 0 12px}.cover-copy .lead,.inner-hero .lead{font-size:18px;color:var(--ink);margin:0 0 14px}.cover-copy p{margin:0 0 20px}.button-row{display:flex;gap:12px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border-radius:10px;padding:0 17px;border:1px solid var(--teal);background:var(--teal);color:#fff}.button.secondary{background:transparent;color:var(--teal)}.grid{display:grid;gap:20px}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow)}.card h3{margin:0 0 8px;color:var(--ink);font-size:18px}.card p{margin:0 0 12px}.text-link{color:var(--teal);font-weight:700}.split{display:grid;grid-template-columns:1.1fr .9fr;gap:46px;align-items:center}.split.reverse{grid-template-columns:.9fr 1.1fr}.media-box{min-height:220px;background:var(--paper);border:1px solid var(--line);border-radius:16px;display:flex;align-items:center;justify-content:center;padding:10px}.media-box img{width:100%;height:clamp(220px,27vw,320px);object-fit:contain;object-position:center}.media-box.tall img{height:auto;max-height:420px;width:auto;max-width:100%}.list-lines{display:grid;gap:13px}.list-line{padding:13px 0;border-bottom:1px solid var(--line)}.list-line:last-child{border-bottom:0}.list-line strong{display:block;color:var(--ink);margin-bottom:3px}.article-reading{max-width:800px}.article-reading p{margin:0 0 18px}.article-reading h2{font-size:24px;color:var(--ink);margin:34px 0 12px}.number-list{display:grid;gap:12px}.number-item{display:grid;grid-template-columns:44px 1fr;gap:16px;border-top:1px solid var(--line);padding:18px 0}.number-item .num{color:var(--gold);font-weight:800;font-size:15px}.number-item h3{margin:0 0 5px;color:var(--ink)}.status-card{border-left:3px solid var(--gold)}.topic-links{display:flex;gap:10px 18px;flex-wrap:wrap}.topic-links a{color:var(--teal);border-bottom:1px solid var(--line2)}.long-intro{max-width:820px;font-size:17px}.mini-tag{display:inline-block;padding:3px 8px;border:1px solid var(--line2);border-radius:8px;color:var(--teal);font-size:13px;margin-bottom:8px}.inner-hero{padding:54px 0 42px}.inner-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.72fr);gap:44px;align-items:center}.inner-hero .hero-media{min-height:230px;background:var(--paper);border:1px solid var(--line);border-radius:14px;display:flex;align-items:center;justify-content:center}.inner-hero .hero-media img{width:100%;height:280px;object-fit:contain}.inner-hero .hero-copy{max-width:760px}.inner-hero p{margin:0}.prose{max-width:820px}.prose h2{font-size:24px;line-height:1.35;color:var(--ink);margin:34px 0 12px}.prose h3{font-size:19px;color:var(--ink);margin:24px 0 8px}.prose p{margin:0 0 16px}.aside-index{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:22px;position:sticky;top:126px}.aside-index h2{font-size:18px;margin:0 0 10px;color:var(--ink)}.aside-index a{display:block;padding:8px 0;border-bottom:1px solid var(--line);color:var(--teal)}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:44px;align-items:start}.step-list{counter-reset:steps;display:grid;gap:16px}.step{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:20px}.step:before{counter-increment:steps;content:counter(steps,decimal-leading-zero);color:var(--gold);font-weight:800;display:block;margin-bottom:6px}.clause{border-top:1px solid var(--line);padding:22px 0}.clause h2{margin:0 0 8px;font-size:21px;color:var(--ink)}.faq-list{display:grid;gap:12px}.faq-list details{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:0 18px}.faq-list summary{cursor:pointer;color:var(--ink);font-weight:700;padding:17px 0}.faq-list p{margin:0;padding:0 0 18px}.callout{padding:22px;border-radius:14px;background:var(--pale);border:1px solid var(--line2)}.site-footer{background:var(--night);color:#dce8e7;padding:56px 0 calc(26px + env(safe-area-inset-bottom))}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:36px}.footer-logo{display:flex;gap:12px;align-items:center;color:white}.footer-logo span{display:grid;line-height:1.25}.footer-logo em{font-size:12px;font-style:normal;color:#b9cfcd}.footer-brand p{max-width:360px;color:#c5d7d5}.footer-links h2{font-size:15px;color:white;margin:0 0 10px}.footer-links a{display:block;color:#c9d8d6;padding:4px 0;font-size:14px}.footer-notes{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:22px;font-size:13px;color:#b8cecb;display:flex;justify-content:space-between;gap:20px}.footer-notes p{margin:0}.overlay{position:fixed;inset:0;background:rgba(8,29,34,.36);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.panel{position:fixed;left:0;right:0;top:102px;z-index:90;background:var(--white);border-bottom:1px solid var(--line);box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-8px);transition:.18s}.panel.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}.panel-inner{max-height:70vh;overflow:auto;padding-top:22px;padding-bottom:24px}.panel-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:14px}.panel-head h2{font-size:22px;color:var(--ink);margin:0}.panel-close{min-height:44px;padding:0 13px;border:1px solid var(--line2);border-radius:9px;background:transparent;color:var(--ink);cursor:pointer}.mega-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.mega-grid h3{font-size:14px;color:var(--faint);margin:0 0 8px}.mega-grid a{display:block;border-top:1px solid var(--line);padding:10px 0}.mega-grid a strong,.mega-grid a span{display:block}.mega-grid a strong{color:var(--ink);font-size:15px}.mega-grid a span{color:var(--muted);font-size:13px;line-height:1.5}.search-panel{padding:22px 20px}.search-card{width:min(760px,100%);margin:auto}.search-look label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.search-look input{width:100%;min-height:48px;border:1px solid var(--line2);border-radius:10px;padding:0 13px;background:white;color:var(--ink)}.quick-links{display:flex;flex-wrap:wrap;gap:9px;margin-top:14px}.quick-links a{padding:7px 10px;border-radius:8px;background:var(--pale);color:var(--teal)}.mobile-bottom{display:none}.accent-rule{width:46px;height:2px;background:var(--gold);margin:12px 0 20px}.quote-box{padding:22px 0 22px 22px;border-left:3px solid var(--gold);max-width:760px;font-size:17px;color:var(--ink)}.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.feature-list article{padding:18px 0;border-top:1px solid var(--line)}.feature-list h3{margin:0 0 6px;color:var(--ink)}.index-row{display:flex;flex-wrap:wrap;gap:10px}.index-row a{padding:8px 12px;background:var(--paper);border:1px solid var(--line);border-radius:9px;color:var(--teal)}
@media(max-width:900px){.main-nav{grid-template-columns:1fr auto}.primary-nav{display:none}.topic-band-inner{justify-content:flex-start;overflow:hidden}.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}.split,.split.reverse,.inner-hero-grid,.article-layout{grid-template-columns:1fr}.aside-index{position:static}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-brand{grid-column:1/-1}.mega-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){html{scroll-padding-top:70px}body{padding-bottom:calc(54px + env(safe-area-inset-bottom))}.wrap{width:min(100% - 32px,1180px)}.brand-strip{display:none}.main-nav-wrap{top:0}.main-nav{height:60px;display:flex;justify-content:space-between;gap:10px}.site-logo{font-size:20px;min-width:0}.site-logo .logo-image{height:32px;max-width:150px}.nav-actions{margin-left:auto;gap:6px}.nav-action{padding:0 10px;min-width:44px}.topic-band{display:none}.nav-action.strong{background:transparent;color:var(--teal)}.section{padding:50px 0}.section.compact{padding:38px 0}.hero-cover{padding:20px 0 44px}.cover-image img{height:clamp(160px,56vw,250px)}.cover-copy{padding-top:22px}.cover-copy h1,.inner-hero h1{font-size:28px}.cover-copy .lead,.inner-hero .lead{font-size:17px}.grid-4,.grid-3,.grid-2,.feature-list{grid-template-columns:1fr}.split,.split.reverse{gap:24px}.media-box img,.inner-hero .hero-media img{height:clamp(170px,60vw,240px)}.inner-hero{padding:38px 0 28px}.inner-hero-grid{gap:24px}.section-head{align-items:start;flex-direction:column;margin-bottom:22px}.section-head p{max-width:none}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.footer-notes{flex-direction:column}.panel{top:60px}.panel-inner{max-height:76vh}.mega-grid{grid-template-columns:1fr 1fr;gap:16px}.mobile-bottom{position:fixed;z-index:60;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(4,1fr);height:calc(52px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:rgba(250,253,252,.98);border-top:1px solid var(--line)}.mobile-bottom a{position:relative;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted)}.mobile-bottom a.is-current{color:var(--teal);font-weight:700}.mobile-bottom a.is-current:before{content:"";position:absolute;top:0;width:24px;height:2px;background:var(--teal)}.search-panel{padding:18px 16px}.card{padding:18px}.number-item{grid-template-columns:36px 1fr}.footer-links a{font-size:13px}}
@media(max-width:420px){.wrap{width:calc(100% - 32px)}.nav-action{font-size:13px;padding:0 8px}.mega-grid{grid-template-columns:1fr}.button-row .button{flex:1 1 150px}.footer-grid{grid-template-columns:1fr}.footer-links{border-top:1px solid rgba(255,255,255,.1);padding-top:15px}}
:focus-visible{outline:3px solid rgba(38,125,131,.35);outline-offset:3px}

/* Image sizing safeguards: keep supplied artwork inside its layout without enlarging it. */
img{display:block;max-width:100%;height:auto}
.cover-image{overflow:visible}
.cover-image img{width:auto;max-width:100%;height:auto;max-height:320px;object-fit:contain;object-position:center}
.media-box{min-width:0;max-width:100%;overflow:visible}
.media-box img{width:auto;max-width:100%;height:auto;max-height:320px;object-fit:contain;object-position:center}
.media-box.tall img{width:auto;max-width:100%;height:auto;max-height:400px;object-fit:contain;object-position:center}
.inner-hero-grid>*{min-width:0}
.inner-hero .hero-media{min-width:0;max-width:100%;overflow:visible;padding:10px}
.inner-hero .hero-media img{width:auto;max-width:100%;height:auto;max-height:280px;object-fit:contain;object-position:center}
.app-icon{width:64px!important;height:64px!important;max-width:64px!important;max-height:64px!important;object-fit:contain;flex:0 0 64px}
.section-head>.media-box{width:min(360px,100%);flex:0 1 360px}

@media(max-width:900px){
  .cover-image img{max-height:280px}
  .media-box img{max-height:260px}
  .media-box.tall img{max-height:360px}
  .inner-hero .hero-media img{max-height:250px}
  .section-head>.media-box{width:100%;max-width:360px;flex-basis:auto}
}

@media(max-width:680px){
  .cover-image{min-height:0;padding:8px}
  .cover-image img{width:auto;height:auto;max-width:100%;max-height:240px}
  .media-box{min-height:0;padding:8px}
  .media-box img{width:auto;height:auto;max-width:100%;max-height:220px}
  .media-box.tall img{width:auto;height:auto;max-width:85%;max-height:330px}
  .inner-hero .hero-media{min-height:0;padding:8px}
  .inner-hero .hero-media img{width:auto;height:auto;max-width:100%;max-height:220px}
  .app-icon{width:56px!important;height:56px!important;max-width:56px!important;max-height:56px!important;flex-basis:56px}
}