/* ============================================================
   加拿大预测28指南 · Site Kit 共享样式
   高原夜航路线图：深靛蓝底 + 切角面板 + -14° 斜线 + 经幡五色状态
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body { margin: 0; }

h1, h2, h3, h4, h5, p, ul, ol, li, figure, figcaption, blockquote, dl, dd { margin: 0; }

ul, ol { padding: 0; list-style: none; }

img, svg, video, canvas { display: block; max-width: 100%; }

a { color: inherit; text-underline-offset: 3px; }

button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }

[hidden] { display: none !important; }

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

/* ---------- 2. 设计变量 ---------- */
:root {
  /* 色彩 */
  --ink-900: #0B1330;
  --ink-800: #16224A;
  --ink-700: #24335F;
  --ochre: #C77B3A;
  --ochre-wash: rgba(199, 123, 58, 0.18);
  --cyan: #5FB6C9;
  --cloud: #F2F0E9;
  --red: #C9534B;
  --green: #5F8F6B;
  --yellow: #E3C15A;
  --mist: #AEB8D4;
  --route: #53628A;

  /* 字体 */
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-num: "Inter", "Noto Sans SC", system-ui, sans-serif;

  /* 尺度 */
  --shell-max: 1180px;
  --gutter: clamp(18px, 4vw, 48px);
  --header-h: 74px;
  --chamfer: 14px;
  --route-angle: -14deg;
}

@media (max-width: 720px) {
  :root { --header-h: 64px; }
}

/* ---------- 3. 基础排版 ---------- */
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--ink-900);
  background-image:
    radial-gradient(78rem 40rem at 84% -12%, rgba(95, 182, 201, 0.14), transparent 62%),
    radial-gradient(56rem 34rem at 4% 108%, rgba(199, 123, 58, 0.13), transparent 64%),
    linear-gradient(180deg, #0B1330 0%, #0E1738 46%, #0B1330 100%);
  background-attachment: fixed;
  color: var(--cloud);
  font-family: var(--font-body);
  font-size: clamp(15px, 0.6vw + 13px, 17px);
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: 0.01em;
}

#main-content,
main { flex: 1 0 auto; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.015em;
}

h1 { font-size: clamp(34px, 5.4vw, 62px); line-height: 1.05; }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(19px, 1.6vw + 14px, 25px); line-height: 1.3; }
h4 { font-size: clamp(16px, 1vw + 13px, 19px); line-height: 1.4; }

strong { font-weight: 800; color: var(--cloud); }

/* ---------- 4. 布局容器 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.shell--narrow {
  max-width: 780px;
}

.section {
  padding-block: clamp(42px, 7vw, 92px);
}

.section--tight {
  padding-block: clamp(26px, 4vw, 52px);
}

.grid {
  display: grid;
  gap: clamp(18px, 2.6vw, 32px);
}

@media (min-width: 760px) {
  .grid--halves { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 980px) {
  .grid--split { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
}

.rule {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--route), rgba(83, 98, 138, 0));
}

.prose {
  max-width: 68ch;
}

.prose > * + * {
  margin-top: 1em;
}

/* ---------- 5. 页头框架式导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(11, 19, 48, 0.94);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: repeating-linear-gradient(
    105deg,
    rgba(83, 98, 138, 0.9) 0 12px,
    transparent 12px 26px
  );
  pointer-events: none;
}

.site-header__frame {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 34px);
  width: 100%;
  max-width: var(--shell-max);
  min-height: var(--header-h);
  margin-inline: auto;
  padding: 8px var(--gutter);
}

.site-header__frame::before,
.site-header__frame::after {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(
    180deg,
    rgba(83, 98, 138, 0) 0%,
    rgba(83, 98, 138, 0.75) 28%,
    rgba(83, 98, 138, 0.75) 72%,
    rgba(83, 98, 138, 0) 100%
  );
}

.site-header__frame::before { left: 0; }
.site-header__frame::after { right: 0; }

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: 8px;
  z-index: 90;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #101A3C;
  background: var(--yellow);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transform: translateY(-180%);
  transition: transform 0.16s ease;
}

.skip-link:focus {
  transform: translateY(0);
  outline: none;
  box-shadow: inset 0 0 0 2px #101A3C;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  margin-inline-end: auto;
  padding-block: 8px;
  text-decoration: none;
}

.brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: none;
  background: conic-gradient(from 210deg, var(--ochre), var(--cyan) 56%, var(--ink-700) 88%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.brand__node {
  width: 11px;
  height: 11px;
  background: var(--cloud);
  transform: rotate(45deg);
  box-shadow: 0 0 14px rgba(242, 240, 233, 0.9);
}

.brand__text {
  display: block;
  line-height: 1.3;
}

.brand__name {
  display: block;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--cloud);
}

.brand__line {
  display: block;
  margin-top: 1px;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.07em;
  color: var(--mist);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--cloud);
  background: rgba(36, 51, 95, 0.55);
  box-shadow: inset 0 0 0 1px var(--route);
  transition: box-shadow 0.16s ease, color 0.16s ease, background-color 0.16s ease;
}

.nav-toggle:hover {
  box-shadow: inset 0 0 0 1px var(--ochre);
}

.nav-toggle:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
}

/* 导航 */
.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.6vw, 24px);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 0.8vw, 10px);
}

.site-nav__item { display: block; }

.site-nav__link {
  display: inline-block;
  padding: 9px 10px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.07em;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.16s ease, background-color 0.16s ease, border-color 0.16s ease;
}

.site-nav__link:hover {
  color: var(--cloud);
  background: rgba(95, 182, 201, 0.1);
}

.site-nav__link[aria-current="page"] {
  color: var(--cloud);
  background: var(--ochre-wash);
  border-bottom-color: var(--ochre);
}

.site-nav__aside { display: block; }

.site-nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #101A3C;
  background: var(--ochre);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
  transition: background-color 0.16s ease;
}

.site-nav__cta:hover { background: var(--yellow); }

.site-nav__cta:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--cloud);
}

/* 滚动路线进度 */
.scroll-route {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--ochre));
  pointer-events: none;
}

@media (min-width: 901px) and (max-width: 1080px) {
  .site-nav__link {
    font-size: 13px;
    letter-spacing: 0.04em;
    padding: 8px 6px;
  }
  .site-nav__cta {
    font-size: 12px;
    padding: 9px 12px;
  }
  .brand__line { display: none; }
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    z-index: 55;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: calc(100vh - var(--header-h));
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    padding: 6px var(--gutter) 24px;
    background: linear-gradient(180deg, #131E44 0%, #0C1430 100%);
    border-bottom: 1px solid var(--route);
    box-shadow: 0 24px 48px rgba(3, 7, 22, 0.65);
  }

  .site-header[data-open] .site-nav,
  .site-nav[data-open] { display: flex; }

  .site-header[data-open] .nav-toggle {
    color: var(--yellow);
    background: rgba(199, 123, 58, 0.2);
    box-shadow: inset 0 0 0 1px var(--ochre);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__item {
    border-bottom: 1px solid rgba(83, 98, 138, 0.45);
  }

  .site-nav__link {
    display: block;
    padding: 14px 6px;
    font-size: 15px;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }

  .site-nav__link:hover { background: rgba(95, 182, 201, 0.08); }

  .site-nav__link[aria-current="page"] {
    background: var(--ochre-wash);
    border-left-color: var(--ochre);
  }

  .site-nav__aside {
    padding-top: 18px;
  }

  .site-nav__cta { width: 100%; }
}

@media (max-width: 520px) {
  .brand__line { display: none; }
  .brand__name { font-size: 15px; }
  .brand__mark { width: 30px; height: 30px; }
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: auto;
  background: linear-gradient(180deg, rgba(22, 34, 74, 0.45) 0%, #091026 72%);
}

.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--cyan) 0 20%,
    var(--cloud) 20% 40%,
    var(--red) 40% 60%,
    var(--green) 60% 80%,
    var(--yellow) 80% 100%
  );
  opacity: 0.72;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(260px, 1.1fr) minmax(0, 1.5fr);
  gap: clamp(30px, 5vw, 72px);
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: clamp(38px, 5.5vw, 68px) var(--gutter) clamp(24px, 3.4vw, 36px);
}

.site-footer__brand { max-width: 42ch; }

.site-footer__name {
  font-family: var(--font-display);
  font-size: clamp(21px, 2.2vw, 28px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--cloud);
}

.site-footer__service {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.site-footer__contact {
  margin-top: 22px;
  display: grid;
  gap: 7px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--cloud);
}

.site-footer__note {
  margin-top: 16px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

.site-footer__nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px clamp(14px, 2.4vw, 28px);
  align-content: start;
}

.site-footer__col {
  padding-top: 12px;
  border-top: 1px solid rgba(83, 98, 138, 0.55);
}

.site-footer__link {
  display: inline-block;
  padding-block: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.16s ease, transform 0.16s ease;
}

.site-footer__link:hover {
  color: var(--cloud);
  transform: translateX(3px);
}

.site-footer__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 28px;
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: 18px var(--gutter) clamp(26px, 3.6vw, 40px);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.site-footer__legal { color: var(--mist); }
.site-footer__meta { color: rgba(174, 184, 212, 0.72); }

@media (max-width: 860px) {
  .site-footer__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 34px;
  }
}

@media (max-width: 520px) {
  .site-footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer__base { flex-direction: column; align-items: flex-start; }
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.3;
  color: var(--cloud);
  text-decoration: none;
  background: rgba(36, 51, 95, 0.62);
  box-shadow: inset 0 0 0 1px var(--route);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: background-color 0.16s ease, color 0.16s ease, box-shadow 0.16s ease;
}

.btn:hover {
  background: rgba(199, 123, 58, 0.16);
  box-shadow: inset 0 0 0 1px var(--ochre);
}

.btn:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.btn--primary {
  color: #101A3C;
  background: var(--ochre);
  box-shadow: inset 0 0 0 1px var(--ochre);
}

.btn--primary:hover {
  color: #101A3C;
  background: var(--yellow);
  box-shadow: inset 0 0 0 1px var(--yellow);
}

.btn--primary:focus-visible {
  box-shadow: inset 0 0 0 2px var(--cloud);
}

.btn--quiet {
  background: transparent;
  box-shadow: inset 0 0 0 1px rgba(83, 98, 138, 0.8);
  color: var(--mist);
}

.btn--quiet:hover {
  color: var(--cloud);
  background: rgba(95, 182, 201, 0.1);
  box-shadow: inset 0 0 0 1px var(--cyan);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.breadcrumb li + li::before {
  content: "/";
  margin-inline: 9px;
  color: var(--route);
}

.breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.breadcrumb a:hover {
  color: var(--cloud);
  border-bottom-color: var(--ochre);
}

.breadcrumb [aria-current="page"] { color: var(--cloud); }

/* ---------- 9. 展览标签 / 说明牌 / 状态 ---------- */
.label {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-body);
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--mist);
  text-transform: uppercase;
}

.label::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--ochre);
  transform: rotate(-14deg);
  flex: none;
}

.plate {
  position: relative;
  display: block;
  padding: clamp(18px, 2.4vw, 28px);
  background: linear-gradient(160deg, rgba(36, 51, 95, 0.66) 0%, rgba(22, 34, 74, 0.9) 100%);
  box-shadow: inset 0 0 0 1px var(--route);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--chamfer)), calc(100% - var(--chamfer)) 100%, 0 100%);
  color: var(--cloud);
  text-decoration: none;
  transition: box-shadow 0.16s ease, background-color 0.16s ease;
}

.plate:hover { box-shadow: inset 0 0 0 1px var(--ochre); }

.plate:focus-within { box-shadow: inset 0 0 0 1px var(--ochre); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.1em;
  line-height: 1.6;
  color: var(--cyan);
  background: rgba(95, 182, 201, 0.16);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
}

.chip--ok {
  color: #93CBA1;
  background: rgba(95, 143, 107, 0.22);
}

.chip--warn {
  color: #E68E86;
  background: rgba(201, 83, 75, 0.22);
}

.chip--watch {
  color: var(--yellow);
  background: rgba(227, 193, 90, 0.18);
}

.chip--new {
  color: #E1A46F;
  background: rgba(199, 123, 58, 0.22);
}

/* ---------- 10. 图片容器 ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(155deg, rgba(36, 51, 95, 0.9) 0%, rgba(11, 19, 48, 0.96) 100%);
  box-shadow: inset 0 0 0 1px var(--route);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--chamfer)), calc(100% - var(--chamfer)) 100%, 0 100%);
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 4 / 5; }

.media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 9px 15px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--cloud);
  background: rgba(11, 19, 48, 0.84);
  box-shadow: inset 1px 1px 0 0 rgba(83, 98, 138, 0.8);
}

@media (max-width: 600px) {
  .media--wide { aspect-ratio: 16 / 10; }
  .media--tall { aspect-ratio: 1 / 1; }
}

/* ---------- 11. 动效与无障碍 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}