/* ============================================================
   澳发服务平台 · 共享站点样式 /assets/site.css
   母题：被重新标注的旧海图 · 编号刻度索引
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0}
ul[class],ol[class]{list-style:none;padding-left:0}
img,svg{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
main{display:block}
#main-content{scroll-margin-top:24px}

/* ---------- 2. 变量 ---------- */
:root{
  --deep:#0E2E45;
  --night:#071A28;
  --coral:#F2653F;
  --coral-soft:#F79B7C;
  --sand:#D8A855;
  --mist:#6FA8A0;
  --rock:#5B6670;
  --paper:#F6F1E7;
  --line:#DCD3C4;
  --ink:#1B2A33;

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --wrap:1240px;
  --gutter:clamp(16px,4vw,40px);
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 3. 中文排版基底 ---------- */
body{
  background-color:var(--paper);
  background-image:
    radial-gradient(circle at 14% -8%,rgba(111,168,160,.18),transparent 46%),
    radial-gradient(circle at 92% 2%,rgba(216,168,85,.16),transparent 42%);
  background-repeat:no-repeat;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;color:var(--deep);line-height:1.28;letter-spacing:-.01em}
h1{font-size:clamp(30px,5vw,44px);line-height:1.18}
h2{font-size:clamp(24px,3.2vw,32px)}
h3{font-size:clamp(18px,2.2px + 1vw,21px)}
h4{font-size:17px;line-height:1.4}
strong{font-weight:700;color:var(--deep)}
:focus-visible{outline:2px solid var(--coral);outline-offset:3px}

.skip-link{
  position:absolute;left:12px;top:-72px;z-index:120;
  background:var(--coral);color:#fff;
  padding:10px 18px;border-radius:2px;
  font-size:14px;letter-spacing:.04em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:12px}

.visually-hidden{
  position:absolute!important;width:1px;height:1px;
  margin:-1px;padding:0;overflow:hidden;
  clip:rect(0 0 0 0);clip-path:inset(50%);
  white-space:nowrap;border:0;
}

/* ---------- 4. 容器与章节 ---------- */
.wrap{width:min(calc(100% - var(--gutter) * 2),var(--wrap));margin-inline:auto}

.section{padding-block:clamp(44px,7vw,84px)}
.section--tight{padding-block:clamp(28px,4vw,48px)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:12px 24px;
  border-bottom:1px solid var(--line);
  padding-bottom:14px;margin-bottom:clamp(20px,3vw,34px);
}
.section-title{font-family:var(--font-display);font-weight:900;font-size:clamp(22px,3vw,28px);line-height:1.3;color:var(--deep)}
.section-note{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--rock)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  color:var(--mist);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--coral)}
.lead{font-size:clamp(16px,1.4vw,18px);line-height:1.8;color:var(--rock)}
.mono{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em}
.muted{color:var(--rock)}
.rule{height:0;border:0;border-top:1px solid var(--line);margin-block:clamp(20px,3vw,32px)}

.index-num{
  display:block;
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(28px,4vw,44px);line-height:1;letter-spacing:.02em;
  color:var(--sand);
}

/* ---------- 5. 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-split{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}

/* ---------- 6. 纸张卡片与标签 ---------- */
.paper-card{
  position:relative;
  background:var(--paper);
  border:1px solid var(--line);
  padding:clamp(16px,2.4vw,26px);
  box-shadow:5px 5px 0 rgba(220,211,196,.65);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.paper-card:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 rgba(216,168,85,.45);border-color:rgba(216,168,85,.6)}

.tag{
  display:inline-flex;align-items:center;gap:.4em;
  padding:.24em .6em;border-radius:1px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  background:rgba(216,168,85,.16);
  border:1px solid rgba(216,168,85,.55);
  color:var(--deep);
  white-space:nowrap;
}
.tag--coral{background:rgba(242,101,63,.14);border-color:rgba(242,101,63,.45);color:#a8371a}
.tag--mist{background:rgba(111,168,160,.16);border-color:rgba(111,168,160,.5);color:#2f635d}

/* ---------- 7. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.7em 1.15em;border:1px solid transparent;border-radius:2px;
  font-family:var(--font-body);font-size:14px;font-weight:600;line-height:1.2;letter-spacing:.02em;
  cursor:pointer;text-align:center;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn--coral{background:var(--coral);border-color:var(--coral);color:#fff}
.btn--coral:hover{background:#dd4f29;border-color:#dd4f29}
.btn--ghost{background:transparent;border-color:rgba(246,241,231,.42);color:var(--paper)}
.btn--ghost:hover{border-color:var(--sand);color:var(--sand)}
.btn--ink{background:var(--deep);border-color:var(--deep);color:var(--paper)}
.btn--ink:hover{background:var(--night);border-color:var(--night)}
.btn--sm{font-size:12.5px;padding:.55em .9em;letter-spacing:.06em}
.btn--wide{width:100%}

/* ---------- 8. 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--deep);
  color:var(--paper);
  border-bottom:1px solid rgba(216,168,85,.35);
  transition:box-shadow .24s var(--ease);
}
.site-header::before{
  content:"";display:block;height:4px;
  background-color:rgba(216,168,85,.2);
  background-image:repeating-linear-gradient(90deg,var(--sand) 0 1px,transparent 1px 14px);
}
.site-header[data-stuck]{box-shadow:0 12px 28px rgba(7,26,40,.32)}

.header-inner{
  width:min(calc(100% - var(--gutter) * 2),var(--wrap));
  margin-inline:auto;
}

.mast-row{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;
  gap:clamp(12px,2vw,28px);padding-block:11px 9px;
}

.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand-seal{
  position:relative;flex:0 0 auto;
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--sand);
  display:grid;place-items:center;
  font-family:var(--font-display);font-weight:900;font-size:19px;line-height:1;color:var(--sand);
}
.brand-seal::after{content:"";position:absolute;inset:3px;border:1px dashed rgba(216,168,85,.45);border-radius:50%}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-name{font-family:var(--font-display);font-weight:900;font-size:19px;letter-spacing:.02em;color:var(--paper)}
.brand-tagline{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;color:rgba(246,241,231,.62);text-transform:uppercase}

.mast-note{
  justify-self:center;text-align:center;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:rgba(246,241,231,.55);
}
.mast-actions{display:flex;align-items:center;gap:10px;justify-self:end}
.header-cta{white-space:nowrap}

.nav-toggle{
  display:none;width:42px;height:42px;
  border:1px solid rgba(246,241,231,.35);border-radius:2px;
  place-items:center;
  transition:border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--sand)}
.nav-toggle-bars{position:relative;display:block;width:20px;height:2px;background:var(--paper);transition:background-color .2s var(--ease)}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--paper);
  transition:transform .22s var(--ease);
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-6px) rotate(-45deg)}

.site-nav{border-top:1px solid rgba(246,241,231,.14)}
.nav-list{
  display:flex;flex-wrap:wrap;justify-content:center;align-items:center;
  gap:6px clamp(6px,1.8vw,28px);padding-block:5px;
}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 2px;
  font-size:14.5px;letter-spacing:.05em;
  color:rgba(246,241,231,.78);
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
  background:var(--coral);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--sand)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--sand)}

.datum-bar{
  background:var(--night);
  border-top:1px solid rgba(216,168,85,.28);
}
.datum-list{
  display:flex;align-items:stretch;
  width:min(calc(100% - var(--gutter) * 2),var(--wrap));
  margin-inline:auto;
  overflow-x:auto;
  scrollbar-width:thin;
}
.datum-item{flex:1 1 0;min-width:0}
.datum-link{
  display:flex;align-items:baseline;gap:9px;
  padding:9px 14px;
  border-left:1px solid rgba(246,241,231,.12);
  color:rgba(246,241,231,.72);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.datum-item:first-child .datum-link{border-left:0}
.datum-num{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--coral-soft);transition:color .2s var(--ease)}
.datum-label{font-size:13px;letter-spacing:.06em;white-space:nowrap}
.datum-link:hover{background:rgba(242,101,63,.16);color:#fff}
.datum-link:hover .datum-num{color:var(--coral)}

/* ---------- 9. 页脚 ---------- */
.site-footer{
  background:var(--night);
  color:rgba(246,241,231,.78);
  border-top:3px solid var(--deep);
}
.footer-scale{background:var(--deep);border-bottom:1px solid rgba(216,168,85,.28)}
.scale-list{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  width:min(calc(100% - var(--gutter) * 2),var(--wrap));
  margin-inline:auto;
}
.scale-item{border-left:1px dashed rgba(246,241,231,.16)}
.scale-item:first-child{border-left:0}
.scale-link{
  display:flex;align-items:baseline;gap:10px;
  padding:14px 16px;
  color:rgba(246,241,231,.75);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.scale-num{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--sand)}
.scale-label{font-size:13.5px;letter-spacing:.08em}
.scale-link:hover{background:rgba(242,101,63,.14);color:#fff}

.footer-inner{
  width:min(calc(100% - var(--gutter) * 2),var(--wrap));
  margin-inline:auto;
  padding-top:clamp(32px,5vw,52px);
}
.footer-top{
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:clamp(24px,4vw,56px);
}
.footer-intro{min-width:0}
.footer-summary{
  margin-top:14px;max-width:34ch;
  font-size:14px;line-height:1.8;color:rgba(246,241,231,.7);
}
.footer-hours{
  margin-top:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--mist);
}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.footer-col{min-width:0}
.footer-col-title{
  margin-bottom:12px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--sand);text-transform:uppercase;
}
.footer-links{list-style:none;padding-left:0;display:flex;flex-direction:column;gap:2px}
.footer-link{
  display:inline-block;padding:3px 0;
  font-size:14px;line-height:1.6;color:rgba(246,241,231,.78);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-link:hover{color:#fff;border-bottom-color:var(--coral)}

.footer-contact{
  margin-top:clamp(26px,3.4vw,38px);
  padding-top:22px;
  border-top:1px dashed rgba(246,241,231,.18);
}
.footer-contact-title{
  margin-bottom:12px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--sand);text-transform:uppercase;
}
.footer-contact-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:8px 26px}
.footer-contact-row{display:flex;gap:10px;font-size:13.5px;line-height:1.65}
.footer-contact-label{
  flex:0 0 auto;padding-top:3px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--mist);
}
.footer-contact-value{color:rgba(246,241,231,.88);overflow-wrap:anywhere}

.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;
  margin-top:28px;padding-block:18px 26px;
  border-top:1px solid rgba(246,241,231,.12);
  font-size:12.5px;color:rgba(246,241,231,.55);
}
.footer-legal-line{line-height:1.9}
.legal-link{
  color:rgba(246,241,231,.75);
  border-bottom:1px solid rgba(216,168,85,.42);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.legal-link:hover{color:var(--sand);border-color:var(--sand)}
.footer-icp{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:rgba(246,241,231,.5)}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;
  color:var(--rock);
}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:4px}
.breadcrumb-item{display:flex;align-items:center;gap:6px}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--sand)}
.breadcrumb-link{color:var(--rock);transition:color .2s var(--ease)}
.breadcrumb-link:hover{color:var(--coral)}
.breadcrumb-current{color:var(--ink)}

/* ---------- 11. 图像容器 ---------- */
.media-frame{
  position:relative;margin:0;
  border:1px solid var(--line);
  background:
    linear-gradient(135deg,rgba(14,46,69,.08),rgba(216,168,85,.12));
  box-shadow:6px 6px 0 rgba(220,211,196,.6);
  overflow:hidden;
}
.media-frame::after{
  content:"";position:absolute;inset:6px;
  border:1px solid rgba(216,168,85,.38);
  pointer-events:none;
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-caption{
  margin-top:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--rock);
}

/* ---------- 12. 阅读刻度与显现 ---------- */
.read-progress{
  position:fixed;top:0;left:0;z-index:90;
  width:100%;height:3px;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--coral),var(--sand));
  pointer-events:none;
  transition:transform .1s linear;
}
[data-reveal]{
  opacity:0;transform:translateY(12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
  will-change:opacity,transform;
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 13. 响应式 ---------- */
@media (max-width:1024px){
  .grid-split{grid-template-columns:minmax(0,1fr)}
  .footer-top{grid-template-columns:minmax(0,1fr);gap:30px}
}

@media (max-width:900px){
  .site-header{position:relative;top:auto}
  .site-header[data-stuck]{box-shadow:none}
  .mast-row{grid-template-columns:minmax(0,1fr) auto}
  .mast-note{display:none}
  .nav-toggle{display:grid}
  .site-nav{display:none;border-top:1px solid rgba(246,241,231,.18);padding-bottom:6px}
  .site-nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;padding-block:4px}
  .nav-item{border-bottom:1px dashed rgba(246,241,231,.14)}
  .nav-item:last-child{border-bottom:0}
  .nav-link{display:block;padding:12px 4px}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{color:var(--coral-soft);border-left:2px solid var(--coral);padding-left:12px}
  .datum-item{flex:0 0 auto}
  .datum-link{padding:9px 12px}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:720px){
  .grid-2,.grid-3{grid-template-columns:minmax(0,1fr)}
  .scale-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scale-item:nth-child(3){border-left:0}
  .scale-item:nth-child(n+3){border-top:1px dashed rgba(246,241,231,.16)}
  .footer-cols{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .section-head{align-items:flex-start}
}

@media (max-width:520px){
  .brand-seal{width:34px;height:34px;font-size:16px}
  .brand-name{font-size:16.5px}
  .brand-tagline{font-size:9.5px;letter-spacing:.12em}
  .header-cta{font-size:11.5px;padding:.5em .7em}
  .mast-actions{gap:8px}
  .footer-summary{max-width:none}
}

/* ---------- 14. 减少动态效果 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  [data-reveal]{opacity:1;transform:none;transition:none}
  .read-progress{transition:none}
  .paper-card:hover{transform:none}
}