/* ========== Reset & Variables ========== */
*,*::before,*::after{box-sizing:border-box}
html,body,p,h1,h2,h3,h4,h5,h6,dl,dd,figure,pre,blockquote,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block}
input,button,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
a{text-decoration:none;color:inherit}
html{font-size:16px;-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{min-height:100vh;background-color:#F4F1EA;color:#1A1A1A;font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;font-size:1rem;line-height:1.75;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}

:root{
  --c-deep:#0A1F44;
  --c-orange:#FF6A00;
  --c-milk:#F4F1EA;
  --c-rock:#5B5F6B;
  --c-moss:#4A7C59;
  --c-terra:#C76B4D;
  --c-data:#1D4E89;
  --c-line:#D8D4CD;
  --c-ink:#1A1A1A;
  --f-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --f-display:'DIN Alternate','Arial Narrow','PingFang SC',sans-serif;
  --f-number:'DIN Alternate','Roboto Mono',monospace;
  --fs-12:12px;--fs-14:14px;--fs-16:16px;--fs-20:20px;--fs-28:28px;--fs-36:36px;--fs-48:48px;--fs-64:64px;--fs-88:88px;
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;
  --header-w:280px;
  --header-mobile-h:62px;
  --content-max:1280px;
  --ease:cubic-bezier(0.4,0,0.2,1);
  --transition:0.3s var(--ease);
}

/* ========== Base Typography ========== */
h1,h2,h3,h4,h5,h6{font-family:var(--f-display);color:var(--c-deep);line-height:1.25;font-weight:800;margin-bottom:.5em}
h1{font-size:clamp(2.25rem,4.5vw,4rem)}
h2{font-size:clamp(1.75rem,3vw,2.5rem)}
h3{font-size:clamp(1.375rem,2vw,1.75rem)}
h4{font-size:1.25rem}
h5{font-size:1rem}
h6{font-size:.875rem}
p{margin-bottom:1em}
strong{font-weight:700}
em{font-style:italic}
small{font-size:.875em}
a{color:var(--c-deep);transition:color .2s var(--ease)}
a:hover{color:var(--c-orange)}
::selection{background:var(--c-orange);color:var(--c-deep)}
:focus-visible{outline:2px solid var(--c-orange);outline-offset:2px}
#main-content{display:block;min-height:60vh}

/* ========== Layout ========== */
body{padding-left:0}
@media (min-width:1024px){
  body{padding-left:var(--header-w)}
  #main-content{padding-left:0}
}
@media (max-width:1023.98px){
  #main-content{padding-top:var(--header-mobile-h)}
}
.container{width:100%;max-width:var(--content-max);margin:0 auto;padding-left:var(--sp-5);padding-right:var(--sp-5)}
.dotted-bg{background-image:radial-gradient(circle,rgba(10,31,68,.07) 1px,transparent 1px);background-size:22px 22px}

/* ========== Header ========== */
.site-header{
  position:fixed;top:0;left:0;bottom:0;width:var(--header-w);
  background-color:var(--c-deep);
  background-image:radial-gradient(circle,rgba(244,241,234,.045) 1px,transparent 1px);
  background-size:24px 24px;
  color:var(--c-milk);display:flex;flex-direction:column;z-index:1000;
  border-right:1px solid rgba(244,241,234,.06);
}
.skip-link{
  position:fixed;top:-60px;left:16px;z-index:2000;
  background:var(--c-orange);color:var(--c-deep);
  font-weight:700;font-size:var(--fs-14);padding:10px 20px;
  border-radius:2px;text-decoration:none;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:16px}
.progress-track{position:absolute;top:0;bottom:0;right:0;width:3px;background:rgba(244,241,234,.07);overflow:hidden}
.progress-bar{display:block;height:0;width:100%;background:var(--c-orange)}
.header-top{padding:28px 24px 12px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--c-milk)}
.brand:hover{color:var(--c-milk)}
.brand-mark{
  position:relative;flex-shrink:0;display:grid;place-items:center;
  width:46px;height:46px;background:var(--c-orange);
  clip-path:polygon(0 0,100% 0,100% 72%,0 100%);
  font-family:var(--f-display);font-size:18px;font-weight:800;color:var(--c-deep);line-height:1;
}
.brand-mark::after{content:'';position:absolute;top:7px;right:7px;width:6px;height:6px;background:var(--c-milk);opacity:.9}
.brand-text{display:flex;flex-direction:column}
.brand-name{font-family:var(--f-display);font-size:18px;font-weight:800;letter-spacing:.08em;line-height:1.2;color:var(--c-milk)}
.brand-suffix{font-family:var(--f-number);font-size:10px;letter-spacing:.22em;color:var(--c-orange);line-height:1.4}
.nav-toggle{display:none;align-items:center;gap:10px;background:transparent;border:1px solid rgba(244,241,234,.22);padding:7px 12px;border-radius:2px;color:var(--c-milk);font-family:var(--f-body);font-size:var(--fs-12);transition:border-color .2s var(--ease)}
.nav-toggle:hover{border-color:var(--c-orange)}
.nav-toggle-box{display:flex;flex-direction:column;gap:5px;width:16px}
.nav-toggle-line{display:block;height:2px;background:var(--c-orange)}
.nav-toggle-text{font-weight:500;letter-spacing:.06em}
.site-nav{flex:1;display:flex;flex-direction:column;padding:12px 16px 0;overflow-y:auto;scrollbar-width:thin}
.site-nav::-webkit-scrollbar{width:4px}
.site-nav::-webkit-scrollbar-thumb{background:rgba(244,241,234,.15)}
.nav-list{margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.nav-link{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 14px 11px 16px;color:rgba(244,241,234,.55);
  font-size:var(--fs-14);font-weight:500;letter-spacing:.04em;
  border-radius:2px;transition:background .25s var(--ease),color .25s var(--ease);
}
.nav-link:hover{color:var(--c-milk);background:rgba(244,241,234,.05)}
.nav-link[aria-current="page"]{
  color:var(--c-milk);font-weight:700;
  background:linear-gradient(90deg,rgba(255,106,0,.22),rgba(255,106,0,0));
}
.nav-link[aria-current="page"]::before{
  content:'';position:absolute;left:0;top:6px;bottom:6px;width:3px;
  background:var(--c-orange);clip-path:polygon(0 0,100% 15%,100% 85%,0 100%);
}
.nav-index{font-family:var(--f-number);font-size:11px;font-weight:700;color:rgba(244,241,234,.3);min-width:20px;transition:color .25s var(--ease)}
.nav-link:hover .nav-index{color:var(--c-orange)}
.nav-link[aria-current="page"] .nav-index{color:var(--c-orange)}
.nav-close{
  display:none;position:absolute;top:16px;right:16px;width:36px;height:36px;
  align-items:center;justify-content:center;
  background:transparent;border:1px solid rgba(244,241,234,.2);
  color:var(--c-milk);font-size:20px;line-height:1;border-radius:2px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-close:hover{border-color:var(--c-orange);color:var(--c-orange)}
.nav-foot{margin-top:auto;padding:20px 8px 24px;border-top:1px solid rgba(244,241,234,.08)}
.nav-foot::before{
  content:'';display:block;height:2px;margin-bottom:16px;
  background:repeating-linear-gradient(90deg,var(--c-orange) 0 4px,transparent 4px 9px);
}
.header-note{font-family:var(--f-number);font-size:11px;line-height:1.8;color:rgba(244,241,234,.4);letter-spacing:.06em;margin-bottom:14px}
.header-cta{
  display:inline-flex;align-items:center;gap:8px;padding:8px 16px;
  background:transparent;border:1px solid rgba(255,106,0,.6);
  color:var(--c-orange);font-size:var(--fs-13,13px);font-weight:500;border-radius:2px;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.header-cta:hover{background:var(--c-orange);color:var(--c-deep);border-color:var(--c-orange)}
.header-cta-arrow{display:inline-block;font-family:var(--f-display);transition:transform .25s var(--ease)}
.header-cta:hover .header-cta-arrow{transform:translateX(4px)}
.nav-backdrop{display:none}

/* ========== Footer ========== */
.site-footer{
  position:relative;margin-top:var(--sp-8);
  background-color:var(--c-deep);
  background-image:radial-gradient(circle,rgba(244,241,234,.045) 1px,transparent 1px);
  background-size:28px 28px;
  color:rgba(244,241,234,.62);
}
.site-footer::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--c-orange) 0,var(--c-orange) 140px,rgba(244,241,234,.14) 140px,rgba(244,241,234,.14) 100%)}
.footer-main{padding:56px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:48px;max-width:var(--content-max);margin:0 auto;padding:0 var(--sp-5)}
.footer-logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;margin-bottom:16px}
.footer-logo:hover{color:var(--c-milk)}
.footer-logo-mark{
  position:relative;display:grid;place-items:center;width:38px;height:38px;
  background:var(--c-orange);clip-path:polygon(0 0,100% 0,100% 72%,0 100%);
  font-family:var(--f-display);font-size:13px;font-weight:800;color:var(--c-deep);line-height:1;
}
.footer-logo-mark::after{content:'';position:absolute;top:5px;right:5px;width:5px;height:5px;background:var(--c-milk);opacity:.9}
.footer-logo-text{display:flex;flex-direction:column}
.footer-logo-text strong{font-family:var(--f-display);font-weight:800;font-size:16px;color:var(--c-milk);letter-spacing:.08em;line-height:1.3}
.footer-logo-text span{font-family:var(--f-number);font-size:9px;color:var(--c-orange);letter-spacing:.2em}
.footer-slogan{font-size:var(--fs-13,13px);line-height:1.8;color:rgba(244,241,234,.5);margin-bottom:16px}
.footer-trust{
  font-size:var(--fs-12);line-height:1.9;color:rgba(244,241,234,.38);
  border-left:2px solid var(--c-moss);padding-left:12px;max-width:36em;
}
.footer-title{
  font-family:var(--f-number);font-size:11px;font-weight:700;letter-spacing:.18em;
  color:var(--c-orange);margin:0 0 18px;padding-bottom:8px;
  border-bottom:1px solid rgba(244,241,234,.1);text-transform:uppercase;
}
.footer-list{display:flex;flex-direction:column;gap:8px}
.footer-list a{color:rgba(244,241,234,.55);font-size:var(--fs-13,13px);text-decoration:none;transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-list a:hover{color:var(--c-orange);padding-left:4px}
.footer-contact-line{font-size:var(--fs-12);line-height:1.9;color:rgba(244,241,234,.5);margin-bottom:2px}
.footer-contact-note{margin-top:14px;font-size:var(--fs-12);line-height:1.8;color:rgba(244,241,234,.38);border-top:1px solid rgba(244,241,234,.08);padding-top:12px}
.footer-bottom{border-top:1px solid rgba(244,241,234,.08);padding:16px 0;background:rgba(4,12,30,.4)}
.footer-bottom-inner{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px 24px;max-width:var(--content-max);margin:0 auto;padding:0 var(--sp-5)}
.footer-bottom p{font-size:var(--fs-11,11px);color:rgba(244,241,234,.35);margin:0}

/* ========== Buttons ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;font-family:var(--f-body);font-size:var(--fs-14);
  font-weight:700;line-height:1;border-radius:2px;cursor:pointer;
  text-decoration:none;border:none;white-space:nowrap;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease),transform .15s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--c-orange);color:var(--c-deep)}
.btn-primary:hover{background:#ff8330;color:var(--c-deep);box-shadow:0 4px 20px rgba(255,106,0,.35)}
.btn-ghost{background:transparent;color:var(--c-deep);border:1px solid var(--c-deep)}
.btn-ghost:hover{background:var(--c-deep);color:var(--c-milk)}
.btn-inverse{background:transparent;color:var(--c-milk);border:1px solid rgba(244,241,234,.4)}
.btn-inverse:hover{border-color:var(--c-orange);color:var(--c-orange)}

/* ========== Breadcrumb ========== */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--f-number);font-size:var(--fs-12);color:var(--c-rock);
  padding:14px 0;border-bottom:1px solid var(--c-line);margin-bottom:var(--sp-6);
}
.breadcrumb a{color:var(--c-rock);text-decoration:none;transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--c-orange)}
.breadcrumb-sep{color:rgba(91,95,107,.45);font-size:10px}
.breadcrumb [aria-current="page"]{color:var(--c-ink);font-weight:700}

/* ========== Section Label ========== */
.section-label{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--f-number);font-size:var(--fs-12);font-weight:700;
  letter-spacing:.18em;color:var(--c-orange);text-transform:uppercase;
  margin-bottom:var(--sp-3);
}
.section-label::before{content:'';width:28px;height:3px;background:var(--c-orange);clip-path:polygon(0 0,100% 0,75% 100%,0 100%)}

/* ========== Data Cards ========== */
.data-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:var(--sp-6)}
.data-card{
  position:relative;background:var(--c-milk);border:1px solid var(--c-line);
  padding:24px 20px 20px;min-height:120px;
  transition:box-shadow .3s var(--ease),transform .3s var(--ease);
}
.data-card::before{content:'';position:absolute;top:0;left:0;width:36px;height:4px;background:var(--c-orange);clip-path:polygon(0 0,100% 0,78% 100%,0 100%)}
.data-card:hover{box-shadow:0 8px 28px rgba(10,31,68,.08);transform:translateY(-3px)}
.data-num{font-family:var(--f-number);font-weight:800;font-size:var(--fs-36);color:var(--c-deep);line-height:1.1;margin-bottom:4px;letter-spacing:.02em}
.data-card--light .data-num{color:var(--c-orange)}
.data-label{font-size:var(--fs-12);color:var(--c-rock);line-height:1.5}

/* ========== Tag ========== */
.tag{
  display:inline-flex;align-items:center;padding:3px 10px;
  font-family:var(--f-number);font-size:var(--fs-11,11px);font-weight:700;
  letter-spacing:.05em;background:rgba(29,78,137,.09);color:var(--c-data);
  border-left:2px solid var(--c-data);line-height:1.6;
}
.tag--status{background:rgba(74,124,89,.12);color:var(--c-moss);border-left-color:var(--c-moss)}
.tag--warn{background:rgba(255,106,0,.1);color:var(--c-orange);border-left-color:var(--c-orange)}

/* ========== Divider ========== */
.divider{height:1px;background:var(--c-line);border:none;margin:var(--sp-6) 0}

/* ========== Page Head ========== */
.page-head{padding:48px 0 24px}
.page-title{font-size:clamp(2rem,4vw,3.25rem);letter-spacing:.02em;padding-bottom:16px;margin-bottom:12px;position:relative}
.page-title::before{content:'';position:absolute;bottom:0;left:0;width:56px;height:4px;background:var(--c-orange);clip-path:polygon(0 0,100% 0,75% 100%,0 100%)}
.page-lead{font-size:var(--fs-16);color:var(--c-rock);max-width:60ch;line-height:1.9}

/* ========== Media ========== */
.media{
  position:relative;overflow:hidden;background:var(--c-deep);aspect-ratio:4/3;
}
.media::before{
  content:'';position:absolute;inset:0;z-index:0;
  background:
    linear-gradient(45deg,rgba(244,241,234,.05) 25%,transparent 25%,transparent 75%,rgba(244,241,234,.05) 75%),
    linear-gradient(45deg,rgba(244,241,234,.05) 25%,transparent 25%,transparent 75%,rgba(244,241,234,.05) 75%);
  background-size:22px 22px;background-position:0 0,11px 11px;
}
.media::after{
  content:attr(data-label);
  position:absolute;inset:0;z-index:0;display:grid;place-items:center;
  font-family:var(--f-number);font-size:var(--fs-12);letter-spacing:.22em;
  color:rgba(244,241,234,.35);text-transform:uppercase;
}
.media img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}
.media--hero{aspect-ratio:2/1}

/* ========== Responsive ========== */
@media (max-width:1023.98px){
  .site-header{
    width:auto;right:0;bottom:auto;height:var(--header-mobile-h);
    flex-direction:row;align-items:center;padding:0 16px;
    border-right:none;border-bottom:1px solid rgba(244,241,234,.08);
  }
  .header-top{flex:1;display:flex;align-items:center;justify-content:space-between;padding:0}
  .brand-mark{width:38px;height:38px;font-size:15px}
  .brand-name{font-size:16px}
  .brand-suffix{font-size:9px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;top:0;left:0;bottom:0;width:min(320px,84vw);
    padding:72px 24px 24px;background:var(--c-deep);
    box-shadow:8px 0 32px rgba(4,12,30,.55);
    transform:translateX(-100%);visibility:hidden;
    transition:transform .3s var(--ease),visibility 0s linear .3s;
    z-index:1100;overflow-y:auto;display:flex;flex-direction:column;
  }
  .site-nav[data-open="true"]{
    transform:translateX(0);visibility:visible;
    transition:transform .3s var(--ease),visibility 0s;
  }
  .nav-close{display:inline-flex}
  .nav-backdrop{
    display:block;position:fixed;inset:0;background:rgba(4,12,30,.55);
    z-index:1050;opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .3s var(--ease),visibility 0s linear .3s;
  }
  .nav-backdrop[data-open="true"]{opacity:1;visibility:visible;pointer-events:auto;transition:opacity .3s var(--ease),visibility 0s}
  .progress-track{top:auto;bottom:0;left:0;right:0;width:auto;height:2px}
  .progress-bar{height:100%;width:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1/-1}
  .footer-main{padding:44px 0 28px}
  .data-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:639.98px){
  .container{padding-left:var(--sp-4);padding-right:var(--sp-4)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom-inner{flex-direction:column;text-align:center}
  .data-grid{grid-template-columns:1fr}
  .page-head{padding:32px 0 20px}
}

/* ========== Reduced Motion ========== */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .data-card:hover{transform:none}
  .header-cta-arrow{transition:none}
  .header-cta:hover .header-cta-arrow{transform:none}
}