/* ============================================================
   拿大正规平台 — /assets/site.css
   共享外壳：reset、变量、中文排版、页头、页脚、通用组件
   ============================================================ */

:root{
  --deep-sea:#0B2545;
  --indigo:#123C69;
  --gold:#C8A24A;
  --gold-bright:#E3C77B;
  --cinnabar:#C0392B;
  --jade:#2E7D6B;
  --slate:#6C8394;
  --fog:#F4F6F8;
  --warm-white:#FBF8F3;
  --ink:#101820;

  --line-dark:rgba(11,37,69,.14);
  --line-light:rgba(255,255,255,.14);
  --line-gold:rgba(200,162,74,.42);

  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-mono:"JetBrains Mono","Roboto Mono","SFMono-Regular",monospace;

  --radius:14px;
  --radius-sm:8px;
  --unit:8px;
  --wrap:1240px;
  --rail:240px;
  --header-h:78px;
  --ease:160ms cubic-bezier(.2,.6,.3,1);
}

*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:104px;
}

body{
  margin:0;
  background:var(--warm-white);
  color:var(--ink);
  font:400 17px/1.9 var(--font-body);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{
  font-family:var(--font-sans);
  color:var(--ink);
  margin:0 0 .6em;
  line-height:1.22;
  letter-spacing:-.01em;
}
h1{font-size:clamp(34px,5vw,64px);font-weight:900;line-height:1.1;letter-spacing:-.02em}
h2{font-size:clamp(24px,2.6vw,32px);font-weight:700}
h3{font-size:20px;font-weight:700}
h4{font-size:17px;font-weight:700}
p{margin:0 0 1.2em}

a{
  color:var(--indigo);
  text-decoration:none;
  border-bottom:1px solid var(--line-gold);
  transition:color var(--ease),border-color var(--ease);
}
a:hover{color:var(--cinnabar);border-bottom-color:var(--cinnabar)}

img{max-width:100%;height:auto}
ul,ol{padding-left:1.3em}
button{font:inherit}

:focus-visible{
  outline:2px solid var(--gold);
  outline-offset:3px;
  border-radius:3px;
}

/* ---------- 布局容器 ---------- */

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:28px;
}

.section{padding:64px 0}
.section--tight{padding:40px 0}
.section--fog{background:var(--fog)}
.section--dark{
  background:var(--deep-sea);
  color:rgba(255,255,255,.86);
}
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4{color:#fff}
.section--dark a{color:var(--gold-bright);border-bottom-color:var(--line-gold)}
.section--dark a:hover{color:#fff;border-bottom-color:var(--gold-bright)}
.section--dark .eyebrow{color:rgba(255,255,255,.6)}
.section--dark .note{color:rgba(255,255,255,.62)}

.split{
  display:grid;
  grid-template-columns:minmax(0,var(--rail)) minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.split--rail-sm{--rail:88px}
.split--rail-lg{--rail:300px}

.grid{display:grid;gap:24px}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

.stack{display:flex;flex-direction:column;gap:16px}
.stack--lg{gap:32px}

.rule{
  height:1px;
  border:0;
  margin:0;
  background:linear-gradient(90deg,var(--line-gold),rgba(200,162,74,0));
}

/* ---------- 排版辅助 ---------- */

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-sans);
  font-size:12px;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--slate);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--gold)}

.note{
  font-family:var(--font-sans);
  font-size:14px;
  line-height:1.8;
  color:var(--slate);
  margin:0;
}

.vertical-note{
  writing-mode:vertical-rl;
  font-family:var(--font-sans);
  font-size:13px;
  letter-spacing:.22em;
  color:var(--slate);
  margin:0;
}

.prose{max-width:72ch}
.prose h2{margin-top:1.8em}
.prose h3{margin-top:1.5em}
.prose ul,.prose ol{margin:0 0 1.2em}
.prose li{margin-bottom:.4em}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding-bottom:2px;
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:600;
  color:var(--indigo);
  border-bottom:1px solid var(--line-gold);
  transition:color var(--ease),border-color var(--ease),gap var(--ease);
}
.link-arrow::after{content:"→";font-family:var(--font-mono)}
.link-arrow:hover{color:var(--cinnabar);border-bottom-color:var(--cinnabar);gap:12px}

/* ---------- 内页标准头部 ---------- */

.page-head{
  position:relative;
  padding:calc(var(--header-h) + 56px) 0 48px;
  background:var(--deep-sea);
  color:rgba(255,255,255,.84);
  overflow:hidden;
}
.page-head::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--line-gold) 20%,var(--line-gold) 80%,transparent);
}
.page-head h1{color:#fff;margin-bottom:.35em}
.page-head .eyebrow{color:var(--gold-bright)}
.page-head .note{color:rgba(255,255,255,.66)}

.breadcrumb{
  font-family:var(--font-sans);
  font-size:13px;
  color:var(--slate);
  margin-bottom:22px;
}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  list-style:none;
  margin:0;
  padding:0;
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:var(--line-gold)}
.page-head .breadcrumb{color:rgba(255,255,255,.6)}
.page-head .breadcrumb a{color:rgba(255,255,255,.72);border-bottom:none}
.page-head .breadcrumb a:hover{color:var(--gold-bright);border-bottom:none}
.page-head .breadcrumb [aria-current="page"]{color:#fff}

/* ---------- 按钮 ---------- */

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border:1px solid transparent;
  border-radius:999px;
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:700;
  line-height:1;
  letter-spacing:.04em;
  text-decoration:none;
  cursor:pointer;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease);
}
.btn--gold{background:var(--gold);border-color:var(--gold);color:var(--deep-sea)}
.btn--gold:hover{background:var(--gold-bright);border-color:var(--gold-bright);color:var(--deep-sea)}
.btn--ghost{background:transparent;border-color:rgba(200,162,74,.6);color:#fff}
.btn--ghost:hover{background:rgba(200,162,74,.16);border-color:var(--gold);color:#fff}
.btn--dark{background:var(--deep-sea);border-color:var(--deep-sea);color:#fff}
.btn--dark:hover{background:var(--indigo);border-color:var(--indigo);color:#fff}
.btn--sm{padding:8px 14px;font-size:13px}
.btn:focus-visible{outline-offset:3px}

/* ---------- 页头 ---------- */

.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:linear-gradient(180deg,rgba(11,37,69,.88),rgba(11,37,69,0));
  transition:background 200ms ease,box-shadow 200ms ease;
}
.site-header[data-scrolled]{
  background:var(--deep-sea);
  box-shadow:0 1px 0 var(--line-gold),0 14px 34px rgba(6,18,34,.42);
}
.site-header[data-open]{background:var(--deep-sea)}

.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:var(--header-h);
  padding-top:10px;
  padding-bottom:10px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  padding:6px 0;
  color:#fff;
  border-bottom:none;
}
.brand:hover{color:#fff;border-bottom:none}
.brand__mark{display:inline-flex;align-items:flex-end;gap:2px;height:24px}
.brand__mark i{display:block;width:3px;border-radius:2px;background:var(--gold)}
.brand__mark i:nth-child(1){height:9px}
.brand__mark i:nth-child(2){height:14px}
.brand__mark i:nth-child(3){height:20px}
.brand__mark i:nth-child(4){height:24px;background:var(--gold-bright)}
.brand__mark i:nth-child(5){height:16px}
.brand__mark i:nth-child(6){height:11px}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:700;
  letter-spacing:.03em;
  color:#fff;
}
.brand__meta{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--gold-bright);
}

.site-nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:6px;
  list-style:none;
  margin:0;
  padding:0;
}
.site-nav__link{
  display:block;
  padding:9px 10px;
  border-radius:var(--radius-sm);
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:500;
  line-height:1;
  color:rgba(255,255,255,.82);
  border-bottom:none;
  transition:color var(--ease),background-color var(--ease);
}
.site-nav__link:hover{
  color:#fff;
  background:rgba(255,255,255,.08);
  border-bottom:none;
}
.site-nav__link[aria-current="page"]{
  color:var(--gold-bright);
  background:rgba(200,162,74,.14);
}
.site-nav__cta{display:none}

.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:9px 14px;
  border:1px solid rgba(200,162,74,.55);
  border-radius:999px;
  background:transparent;
  color:#fff;
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:600;
  cursor:pointer;
  transition:border-color var(--ease),background-color var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);background:rgba(200,162,74,.16)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px}
.nav-toggle__bars i{
  display:block;
  width:16px;
  height:1.5px;
  background:var(--gold-bright);
  transition:transform var(--ease),opacity var(--ease);
}
.site-header[data-open] .nav-toggle__bars i:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars i:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars i:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

.skip-link{
  position:absolute;
  left:16px;
  top:-72px;
  z-index:120;
  padding:10px 18px;
  border-radius:0 0 var(--radius-sm) var(--radius-sm);
  background:var(--gold);
  color:var(--deep-sea);
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:700;
  border-bottom:none;
  transition:top 160ms ease;
}
.skip-link:focus{top:0;color:var(--deep-sea);border-bottom:none}

/* ---------- 内容组件 ---------- */

.card{
  padding:24px 26px;
  border:1px solid var(--line-dark);
  border-radius:var(--radius);
  background:#fff;
  transition:border-color var(--ease);
}
.card:hover{border-color:var(--line-gold)}
.card__head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  margin-bottom:14px;
}
.card__title{
  margin:0;
  font-family:var(--font-sans);
  font-size:18px;
  font-weight:700;
  color:var(--ink);
}
.card__body{margin:0;font-size:16px;line-height:1.85;color:#33414d}

.stat{display:flex;flex-direction:column;gap:6px}
.stat__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(28px,4vw,52px);
  font-weight:700;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--deep-sea);
}
.stat__label{
  font-family:var(--font-sans);
  font-size:13px;
  letter-spacing:.08em;
  color:var(--slate);
}
.stat--gold .stat__value{color:var(--gold)}
.stat--on-dark .stat__value{color:#fff}
.stat--on-dark .stat__label{color:rgba(255,255,255,.62)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid transparent;
  border-radius:999px;
  background:var(--fog);
  color:var(--slate);
  font-family:var(--font-sans);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  line-height:1.6;
}
.tag--gold{background:rgba(200,162,74,.14);border-color:var(--line-gold);color:#8a6c1f}
.tag--red{background:rgba(192,57,43,.1);border-color:rgba(192,57,43,.35);color:var(--cinnabar)}
.tag--jade{background:rgba(46,125,107,.1);border-color:rgba(46,125,107,.32);color:var(--jade)}

.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line-dark);
  border-radius:var(--radius);
  background:#fff;
  -webkit-overflow-scrolling:touch;
}
.data-table{
  width:100%;
  border-collapse:collapse;
  font-family:var(--font-sans);
  font-size:15px;
}
.data-table th,
.data-table td{
  padding:12px 16px;
  text-align:left;
  border-bottom:1px solid var(--line-dark);
  white-space:nowrap;
}
.data-table th{
  background:var(--indigo);
  color:#fff;
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table tbody tr:hover td{background:rgba(200,162,74,.07)}
.data-table .num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  text-align:right;
}

.fig{margin:0}
.fig__frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border:1px solid var(--line-gold);
  border-radius:var(--radius);
  background-color:var(--indigo);
  background-image:
    linear-gradient(0deg,rgba(255,255,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:32px 32px,32px 32px;
}
.fig__frame img{display:block;width:100%;height:100%;object-fit:cover}
.fig__cap{
  margin-top:10px;
  font-family:var(--font-sans);
  font-size:13px;
  line-height:1.7;
  color:var(--slate);
}
.fig--square .fig__frame{aspect-ratio:1 / 1}
.fig--tall .fig__frame{aspect-ratio:3 / 4}
.fig--wide .fig__frame{aspect-ratio:21 / 9}

/* ---------- 页脚 ---------- */

.site-footer{
  position:relative;
  padding:72px 0 28px;
  background:var(--deep-sea);
  color:rgba(255,255,255,.78);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--line-gold) 15%,var(--line-gold) 85%,transparent);
}

.footer-grid{
  display:grid;
  grid-template-columns:1.3fr 1fr 1.2fr;
  gap:48px;
}
.footer-col{min-width:0}

.footer-brand{
  margin:0 0 10px;
  font-family:var(--font-sans);
  font-size:22px;
  font-weight:900;
  letter-spacing:.04em;
  color:#fff;
}
.footer-note{
  margin:0;
  max-width:34ch;
  font-family:var(--font-sans);
  font-size:15px;
  line-height:1.85;
  color:rgba(255,255,255,.66);
}
.footer-scale{
  display:flex;
  align-items:flex-end;
  gap:6px;
  height:26px;
  margin-top:22px;
}
.footer-scale i{display:block;width:2px;height:12px;border-radius:1px;background:var(--line-gold)}
.footer-scale i:nth-child(3n){height:24px}
.footer-scale i:nth-child(4n){height:18px;background:var(--gold)}

.footer-head{
  margin:0 0 16px;
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--gold-bright);
}

.footer-links{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:4px 18px;
}
.footer-links a{
  display:inline-block;
  padding:6px 0;
  font-family:var(--font-sans);
  font-size:14px;
  color:rgba(255,255,255,.82);
  border-bottom:none;
  transition:color var(--ease),padding-left var(--ease);
}
.footer-links a:hover{color:var(--gold-bright);padding-left:6px;border-bottom:none}

.footer-contact{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.footer-contact li{display:flex;flex-direction:column;gap:3px}
.footer-key{
  font-family:var(--font-sans);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--slate);
}
.footer-value{
  font-family:var(--font-sans);
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.88);
  word-break:break-word;
}
.footer-value--mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:12px 28px;
  margin-top:56px;
  padding-top:22px;
  border-top:1px solid var(--line-light);
}
.footer-disclaimer{
  margin:0;
  font-family:var(--font-sans);
  font-size:13px;
  line-height:1.7;
  color:rgba(255,255,255,.6);
}
.footer-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--slate);
}
.footer-dot{color:var(--line-gold)}

/* ---------- 滚动显现 ---------- */

[data-reveal]{
  opacity:0;
  transform:translateY(8px);
  transition:opacity 180ms ease,transform 180ms ease;
}
[data-reveal="in"]{opacity:1;transform:none}

/* ---------- 响应式 ---------- */

@media (max-width:1100px) and (min-width:961px){
  .site-nav{gap:14px}
  .site-nav__link{padding:9px 7px;font-size:14px}
}

@media (max-width:1000px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .footer-grid > .footer-col:first-child{grid-column:1 / -1}
}

@media (max-width:960px){
  :root{--rail:100%}

  .split{grid-template-columns:1fr;gap:32px}

  .nav-toggle{display:inline-flex}
  .header-cta{display:none}

  .site-nav{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(86vw,380px);
    margin:0;
    padding:calc(var(--header-h) + 24px) 26px 40px;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    background:var(--deep-sea);
    box-shadow:-24px 0 60px rgba(4,14,28,.5);
    transform:translateX(102%);
    visibility:hidden;
    overflow-y:auto;
    transition:transform 200ms cubic-bezier(.2,.6,.3,1),visibility 200ms;
  }
  .site-nav[data-open]{transform:none;visibility:visible}

  .site-nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .site-nav__link{
    padding:14px 12px;
    border-radius:0;
    border-bottom:1px solid var(--line-light);
    font-size:17px;
  }
  .site-nav__link:hover{background:rgba(200,162,74,.1)}
  .site-nav__link[aria-current="page"]{
    background:rgba(200,162,74,.12);
    border-bottom-color:var(--line-gold);
  }
  .site-nav__cta{display:inline-flex;margin-top:24px}
}

@media (max-width:640px){
  :root{--header-h:66px}

  .wrap{padding-inline:18px}
  .section{padding:48px 0}
  .section--tight{padding:32px 0}

  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}

  .card{padding:20px 18px}
  .page-head{padding:calc(var(--header-h) + 36px) 0 34px}

  .footer-grid{grid-template-columns:1fr;gap:34px}
  .footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-legal{margin-top:40px}
}

/* ---------- 动效偏好 ---------- */

@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 !important;transform:none !important}
}