/* ============================================================
   site.css — 游艇会206 共享外壳
   框架式导航：深海蓝顶框 + 左侧竖框，奶油画册底
   ============================================================ */

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

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

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

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

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

a { color: inherit; text-decoration: none; }

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

table { border-collapse: collapse; width: 100%; }

/* ── 变量 ─────────────────────────────────────────────── */
:root {
  --cream: #F5F1E6;
  --paper: #E9E4D8;
  --panel: #FBF8F0;
  --navy-900: #0B2233;
  --navy-700: #123A57;
  --harbor: #1E6288;
  --silver-300: #C2C8CE;
  --silver-100: #E6EAED;
  --ink: #2A211C;
  --orange: #D9480F;
  --orange-soft: #FFC9A3;
  --teal: #17706E;

  --rail: 236px;
  --head-h: 64px;
  --rail-pad: 22px;
  --shell: 1400px;
  --pad-x: clamp(20px, 3vw, 52px);
  --gap: clamp(16px, 2vw, 28px);

  --t: 160ms;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);

  --font-sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-data: ui-monospace, "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;
}

/* ── 基础排版 ─────────────────────────────────────────── */
body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--cream);
  padding-top: var(--head-h);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (min-width: 1060px) {
  body { padding-left: var(--rail); }
}

h1, .h1 {
  font-family: var(--font-sans);
  font-size: clamp(30px, 4.6vw, 58px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.01em;
  font-stretch: 87.5%;
  color: var(--navy-900);
}

h2, .h2 {
  font-family: var(--font-sans);
  font-size: clamp(23px, 2.8vw, 34px);
  font-weight: 750;
  line-height: 1.22;
  letter-spacing: -0.005em;
  color: var(--navy-900);
}

h3, .h3 {
  font-size: clamp(17px, 1.7vw, 21px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--navy-900);
}

h4, .h4 {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--navy-900);
}

strong { font-weight: 700; }

::selection {
  background: var(--orange-soft);
  color: var(--navy-900);
}

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

:target { scroll-margin-top: calc(var(--head-h) + 24px); }
[id]:target { box-shadow: inset 3px 0 0 var(--orange); }

/* ── 数据层与等宽 ─────────────────────────────────────── */
.data {
  font-family: var(--font-data);
  font-size: 0.86em;
  letter-spacing: 0.02em;
  word-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
}

.timestamp {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: #6B7B85;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--orange);
}

/* ── 布局基元 ─────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.container--narrow { max-width: 820px; }

.section { padding: clamp(48px, 6vw, 96px) 0; }
.section--tight { padding: clamp(28px, 3.4vw, 52px) 0; }

.grid { display: grid; gap: var(--gap); }

.grid--halves { grid-template-columns: 1fr; }
@media (min-width: 860px) {
  .grid--halves { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.grid--split { grid-template-columns: 1fr; }
@media (min-width: 980px) {
  .grid--split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(24px, 3.4vw, 56px);
  }
}

.stack { display: flex; flex-direction: column; gap: var(--gap); }

.rule {
  height: 1px;
  border: 0;
  background: var(--silver-300);
  margin: 0;
}

/* ── 面板 ─────────────────────────────────────────────── */
.panel {
  background: var(--panel);
  border: 1px solid var(--silver-300);
  padding: clamp(18px, 2vw, 26px);
}

.panel--tinted { background: var(--paper); }

.panel--navy {
  background: var(--navy-900);
  border-color: var(--navy-900);
  color: #CFDCE4;
}

.panel--navy h2,
.panel--navy h3,
.panel--navy h4 { color: #F1F5F7; }

/* ── 正文 ─────────────────────────────────────────────── */
.prose {
  font-size: 17px;
  line-height: 1.75;
  max-width: 42em;
  color: var(--ink);
}

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

.prose a {
  color: var(--harbor);
  border-bottom: 1px solid rgba(30, 98, 136, 0.35);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.prose a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.prose strong { color: var(--navy-900); }

/* ── 按钮 ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid var(--navy-900);
  background: transparent;
  color: var(--navy-900);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.2;
  transition: background var(--t) var(--ease), color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.btn:hover {
  background: var(--navy-900);
  color: var(--cream);
}

.btn--primary {
  background: var(--orange);
  border-color: var(--orange);
  color: #1B0E07;
}

.btn--primary:hover {
  background: #B93A0C;
  border-color: #B93A0C;
  color: #FFFFFF;
}

.btn--ghost {
  border-color: var(--silver-300);
  color: var(--navy-700);
}

.btn--ghost:hover {
  background: var(--navy-700);
  border-color: var(--navy-700);
  color: var(--cream);
}

/* ── 面包屑 ───────────────────────────────────────────── */
.breadcrumb { margin: 0 0 20px; }

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: #6B7B85;
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--silver-300);
  margin-right: 2px;
}

.breadcrumb a {
  color: #6B7B85;
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

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

.breadcrumb [aria-current="page"] { color: var(--navy-900); }

/* ── 状态与标签 ───────────────────────────────────────── */
.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  margin-right: 6px;
  vertical-align: middle;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  background: var(--silver-100);
  color: var(--navy-700);
  border: 1px solid var(--silver-300);
}

.tag--live {
  background: rgba(23, 112, 110, 0.12);
  border-color: rgba(23, 112, 110, 0.4);
  color: var(--teal);
}

.tag--alert {
  background: rgba(217, 72, 15, 0.12);
  border-color: rgba(217, 72, 15, 0.38);
  color: var(--orange);
}

/* ── 数据表 ───────────────────────────────────────────── */
.data-table {
  width: 100%;
  font-size: 15px;
  border: 1px solid var(--silver-300);
}

.data-table th {
  height: 40px;
  padding: 0 14px;
  background: var(--navy-900);
  color: #DCE6EC;
  font-family: var(--font-data);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-align: left;
  vertical-align: middle;
  white-space: nowrap;
}

.data-table td {
  height: 44px;
  padding: 0 14px;
  border-bottom: 1px solid var(--silver-300);
  vertical-align: middle;
}

.data-table tbody tr:nth-child(even) { background: var(--paper); }

.data-table tbody tr {
  transition: background var(--t) var(--ease);
}

.data-table tbody tr:hover { background: var(--silver-100); }

.data-table .data { color: var(--navy-700); }
.data-table .is-highlight { color: var(--orange); font-weight: 600; }

/* ── 图片容器 ─────────────────────────────────────────── */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  width: 100%;
  background: var(--silver-100);
  border: 1px solid var(--silver-300);
}

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

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--panorama { aspect-ratio: 21 / 9; }

.media-caption {
  margin-top: 10px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: #6B7B85;
}

/* ── 跳转链接 ─────────────────────────────────────────── */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--navy-900);
  color: var(--cream);
  font-size: 14px;
  letter-spacing: 0.02em;
  border: 1px solid var(--orange-soft);
  transform: translateY(-180%);
  transition: transform var(--t) var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

/* ── 顶框 ─────────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--head-h);
  background: var(--navy-900);
  color: #DCE6EC;
  border-bottom: 1px solid rgba(194, 200, 206, 0.28);
}

.header-frame {
  height: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  padding-right: var(--pad-x);
}

@media (min-width: 1060px) {
  .header-frame {
    grid-template-columns: var(--rail) minmax(0, 1fr) auto;
  }
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 100%;
  min-width: 0;
  padding: 0 16px;
  color: var(--cream);
}

@media (min-width: 1060px) {
  .brand {
    padding: 0 var(--rail-pad);
    border-right: 1px solid rgba(194, 200, 206, 0.22);
  }
}

.brand-mark {
  flex: none;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--orange);
  color: #1B0E07;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.02em;
  color: #F3F7F9;
  white-space: nowrap;
}

.brand-line {
  font-size: 11px;
  line-height: 1.2;
  letter-spacing: 0.04em;
  color: #8FA6B4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 559px) {
  .brand-line { display: none; }
}

/* 顶框说明行 */
.frame-note {
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: #7E97A6;
  padding-left: clamp(16px, 2.4vw, 30px);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 1059px) {
  .frame-note { display: none; }
}

/* 快捷入口 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

@media (max-width: 1059px) {
  .header-actions { display: none; }
}

.chip {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid rgba(194, 200, 206, 0.38);
  background: transparent;
  color: #D8E2E9;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  line-height: 1.2;
  white-space: nowrap;
  transition: background var(--t) var(--ease), color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.chip:hover,
.chip:focus-visible {
  border-color: var(--orange);
  background: rgba(217, 72, 15, 0.16);
  color: #FFFFFF;
}

.chip--accent {
  border-color: var(--orange);
  color: var(--orange-soft);
}

.chip--accent:hover,
.chip--accent:focus-visible {
  background: var(--orange);
  border-color: var(--orange);
  color: #1B0E07;
}

/* 移动导航按钮 */
.nav-toggle {
  display: grid;
  place-items: center;
  gap: 3px;
  width: 48px;
  height: 44px;
  border: 1px solid rgba(194, 200, 206, 0.38);
  color: var(--cream);
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease);
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: var(--orange);
  background: rgba(217, 72, 15, 0.14);
}

.nav-toggle-bars {
  display: block;
  width: 18px;
}

.nav-toggle-bars i {
  display: block;
  height: 1.5px;
  margin: 3px 0;
  background: currentColor;
  transition: transform var(--t) var(--ease), opacity var(--t) var(--ease);
}

.nav-toggle-text {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: 0.14em;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }

@media (min-width: 1060px) {
  .nav-toggle { display: none; }
}

/* ── 左侧竖框导航 ─────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: var(--head-h);
  left: 0;
  bottom: 0;
  width: var(--rail);
  z-index: 90;
  display: flex;
  flex-direction: column;
  padding: 24px 0 30px;
  background: var(--navy-900);
  border-right: 1px solid rgba(194, 200, 206, 0.22);
  overflow-y: auto;
  color: #C7D3DB;
}

.nav-rail-label {
  padding: 0 var(--rail-pad);
  margin-bottom: 10px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #5E7787;
}

.nav-quick {
  display: flex;
  flex-direction: column;
  margin-bottom: 26px;
}

.nav-quick-link {
  display: block;
  padding: 9px var(--rail-pad);
  font-size: 14.5px;
  color: #A9BDC9;
  border-left: 2px solid transparent;
  transition: color var(--t) var(--ease), background var(--t) var(--ease), border-color var(--t) var(--ease);
}

.nav-quick-link::before {
  content: "▸";
  margin-right: 8px;
  font-size: 11px;
  color: var(--harbor);
}

.nav-quick-link:hover,
.nav-quick-link:focus-visible {
  color: #FFFFFF;
  background: rgba(30, 98, 136, 0.22);
  border-left-color: var(--harbor);
}

.nav-list {
  display: flex;
  flex-direction: column;
  margin-bottom: 26px;
}

.nav-list-link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px var(--rail-pad);
  font-size: 15.5px;
  letter-spacing: 0.01em;
  color: #C7D3DB;
  border-left: 2px solid transparent;
  transition: color var(--t) var(--ease), background var(--t) var(--ease), border-color var(--t) var(--ease);
}

.nav-index {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: #5E7787;
}

.nav-list-link:hover,
.nav-list-link:focus-visible {
  color: #FFFFFF;
  background: rgba(30, 98, 136, 0.24);
  border-left-color: var(--harbor);
}

.nav-list-link[aria-current="page"] {
  color: var(--orange-soft);
  background: rgba(217, 72, 15, 0.12);
  border-left-color: var(--orange);
}

.nav-list-link[aria-current="page"] .nav-index { color: var(--orange); }

.nav-rail-note {
  margin-top: auto;
  padding: 20px var(--rail-pad) 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: #6E8896;
  border-top: 1px solid rgba(194, 200, 206, 0.18);
}

.nav-rail-note .data { color: #A9BDC9; }

@media (max-width: 1059px) {
  .site-nav {
    width: min(84vw, 320px);
    transform: translateX(-102%);
    visibility: hidden;
    box-shadow: 14px 0 36px rgba(11, 34, 51, 0.3);
    transition: transform 180ms var(--ease), visibility 180ms linear;
  }

  .site-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
    transition: transform 180ms var(--ease), visibility 0s linear;
  }
}

/* ── 页脚 ─────────────────────────────────────────────── */
.site-footer {
  background: var(--navy-700);
  color: #C9D7DF;
  border-top: 1px solid rgba(194, 200, 206, 0.24);
}

.footer-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(42px, 5vw, 74px) var(--pad-x) clamp(26px, 3vw, 38px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 60px);
}

@media (min-width: 760px) {
  .footer-inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr); }
}

@media (min-width: 1120px) {
  .footer-inner { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.6fr); }
}

.brand--footer {
  height: auto;
  padding: 0;
  border-right: 0;
  margin-bottom: 16px;
}

.footer-note {
  font-size: 14.5px;
  line-height: 1.8;
  color: #9FB6C4;
  max-width: 34em;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: clamp(20px, 3vw, 36px);
}

.footer-col-title {
  font-family: var(--font-data);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #7E97A6;
  margin-bottom: 14px;
}

.footer-links li + li { margin-top: 2px; }

.footer-links a {
  display: inline-block;
  padding: 4px 0;
  font-size: 14.5px;
  color: #AEC1CC;
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: #FFFFFF;
  border-bottom-color: var(--orange);
}

.footer-contact {
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(20px, 2.6vw, 30px) var(--pad-x);
  border-top: 1px solid rgba(194, 200, 206, 0.22);
}

.footer-contact-line {
  font-size: 14.5px;
  line-height: 1.9;
  color: #CBDAE3;
  word-break: break-word;
}

.footer-contact-line .data { color: var(--orange-soft); }

.footer-contact-note {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.8;
  color: #8EA6B4;
}

.footer-legal {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 16px var(--pad-x) 28px;
  border-top: 1px solid rgba(194, 200, 206, 0.22);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: #7E97A6;
}

.footer-stamp { color: #6E8896; }

/* ── 滚动进度 ─────────────────────────────────────────── */
.scroll-progress {
  position: fixed;
  top: var(--head-h);
  left: 0;
  right: 0;
  height: 2px;
  z-index: 120;
  background: rgba(194, 200, 206, 0.3);
  pointer-events: none;
}

.scroll-progress > span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--orange);
  transition: width 90ms linear;
}

/* ── 减少动效 ─────────────────────────────────────────── */
@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-progress > span { transition: none; }
  .site-nav { transition: none; }
}