/* ============================================================
   云开看台 · 共享站点样式 /assets/site.css
   1 reset  2 变量  3 基础排版  4 通用组件  5 头部  6 页脚  7 响应式
   ============================================================ */

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

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

body { margin: 0; }

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

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

ul[class], ol[class] { list-style: none; margin: 0; padding: 0; }

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }

/* ---------- 2 变量 ---------- */
:root {
  /* 品牌色 */
  --night: #0B1B33;
  --space: #102A4C;
  --indigo: #3B2A5A;
  --wine: #6E2B3A;
  --pitch: #2FA36B;
  --signal: #FF7A1A;
  --sand: #E8DCC8;
  --warm: #F7F4EE;
  --ash: #A7B0BD;
  --gold: #D6A84F;

  /* 线 / 面 */
  --line: rgba(247, 244, 238, 0.13);
  --line-strong: rgba(247, 244, 238, 0.30);
  --line-dark: rgba(11, 27, 51, 0.16);

  /* 结构 */
  --max: 1320px;
  --gutter: clamp(18px, 4vw, 56px);
  --radius: 2px;
  --shadow-card: 0 12px 28px rgba(3, 10, 20, 0.35);
  --shadow-lift: 0 18px 38px rgba(3, 10, 20, 0.50);

  /* 字体 */
  --font-display: "HarmonyOS Sans SC", "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-serif: "Songti SC", "Source Han Serif SC", "Noto Serif CJK SC", "SimSun", serif;
  --font-num: "DIN Alternate", "SF Mono", ui-monospace, "JetBrains Mono", "Menlo", Consolas, monospace;

  /* 字阶 12/14/16/18/24/32/48/72/96 */
  --fs-12: 0.75rem;
  --fs-14: 0.875rem;
  --fs-16: 1rem;
  --fs-18: 1.125rem;
  --fs-24: 1.5rem;
  --fs-32: 2rem;
  --fs-48: clamp(2rem, 4vw, 3rem);
  --fs-72: clamp(2.5rem, 6vw, 4.5rem);
  --fs-96: clamp(3rem, 8vw, 6rem);
}

/* ---------- 3 基础排版 ---------- */
body {
  min-height: 100%;
  background:
    radial-gradient(1100px 560px at 82% -8%, rgba(59, 42, 90, 0.55), transparent 62%),
    radial-gradient(820px 460px at 4% 6%, rgba(16, 42, 76, 0.92), transparent 62%),
    var(--night);
  color: var(--warm);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--signal); color: #160B02; }

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

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

/* 跳转主内容 */
.skip-link {
  position: fixed;
  top: 8px; left: 8px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--signal);
  color: #160B02;
  font-family: var(--font-display);
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-radius: var(--radius);
  transform: translateY(-180%);
  transition: transform 0.18s ease;
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--warm);
  outline-offset: 2px;
}

/* ---------- 4 通用组件 ---------- */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(48px, 8vw, 112px); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--signal);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
}

.section-no {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(247, 244, 238, 0.22);
}

.score-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}

.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--ash);
}
.crumb a { color: var(--ash); text-decoration: none; transition: color 0.18s ease; }
.crumb a:hover { color: var(--warm); }
.crumb__sep { color: rgba(167, 176, 189, 0.5); }
.crumb [aria-current="page"] { color: var(--warm); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 22px;
  font-family: var(--font-display);
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--warm);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(247, 244, 238, 0.04);
  transition: background 0.18s ease, border-color 0.18s ease, transform 0.18s ease, color 0.18s ease;
}
.btn:hover {
  background: rgba(247, 244, 238, 0.10);
  border-color: var(--warm);
  transform: translateY(-2px);
}
.btn--primary {
  background: var(--signal);
  border-color: var(--signal);
  color: #160B02;
}
.btn--primary:hover {
  background: #FF9347;
  border-color: #FF9347;
  color: #160B02;
}
.btn--ghost { background: transparent; }

.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: linear-gradient(180deg, rgba(16, 42, 76, 0.94), rgba(11, 27, 51, 0.94));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.card:hover,
.card:focus-within {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-lift);
}
.card__label {
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ash);
}
.card__title {
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--warm);
}
.card__meta {
  font-size: var(--fs-14);
  color: var(--ash);
}

/* 图片容器基础规则：页面阶段放入 <img> 即可 */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(155deg, var(--space) 0%, var(--indigo) 58%, #1A1230 100%);
}
.media > img,
.media > picture,
.media > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media__figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 14px 16px;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--warm);
  background: linear-gradient(0deg, rgba(11, 27, 51, 0.88), transparent);
}

.prose {
  max-width: 38em;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: rgba(247, 244, 238, 0.86);
}
.prose > * + * { margin-top: 1.1em; }
.prose h2 {
  margin-top: 1.9em;
  font-family: var(--font-display);
  font-size: var(--fs-24);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--warm);
}
.prose h3 {
  margin-top: 1.6em;
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 700;
  color: var(--warm);
}
.prose ul { list-style: none; padding-left: 1.2em; }
.prose li { position: relative; }
.prose li + li { margin-top: 0.5em; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: -1.2em;
  top: 0.78em;
  width: 7px;
  height: 1px;
  background: var(--signal);
}
.prose a {
  color: var(--sand);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.on-sand { background: var(--sand); color: #16233A; }
.on-sand .prose { color: #1B2A3F; }
.on-sand .prose h2,
.on-sand .prose h3 { color: #16233A; }
.prose--light { color: #1B2A3F; }

.grid { display: grid; gap: clamp(16px, 2.2vw, 28px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

/* ---------- 5 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(11, 27, 51, 0.97);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  backdrop-filter: saturate(140%) blur(10px);
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(560px 130px at 20% 0%, rgba(59, 42, 90, 0.62), transparent 72%);
}

.masthead {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 26px);
  min-height: 66px;
}

.masthead__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-block: 8px;
  color: var(--warm);
  text-decoration: none;
}
.masthead__wordmark {
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--warm);
}
.masthead__status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--ash);
  white-space: nowrap;
}
.status-lamp {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--pitch);
  box-shadow: 0 0 0 3px rgba(47, 163, 107, 0.18);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 9px 12px;
  font-family: var(--font-display);
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--warm);
  background: rgba(247, 244, 238, 0.05);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: background 0.18s ease, border-color 0.18s ease;
}
.nav-toggle:hover { background: rgba(247, 244, 238, 0.12); border-color: var(--warm); }
.nav-toggle__text { display: inline-block; }
.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 1.5px;
  background: currentColor;
  transition: background 0.18s ease;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.18s ease, top 0.18s ease;
}
.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

.masthead__nav { margin-left: auto; }

.nav-index { display: flex; align-items: center; gap: 2px; }
.nav-index__item { display: flex; }
.nav-index__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 22px 10px;
  font-size: var(--fs-14);
  letter-spacing: 0.06em;
  color: var(--ash);
  text-decoration: none;
  transition: color 0.18s ease;
}
.nav-index__link::after {
  content: "";
  position: absolute;
  left: 10px; right: 10px; bottom: 14px;
  height: 2px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.16s ease, background 0.16s ease;
}
.nav-index__link:hover { color: var(--warm); }
.nav-index__link:hover::after { transform: scaleX(0.5); background: var(--line-strong); }
.nav-index__link[aria-current="page"] { color: var(--warm); font-weight: 700; }
.nav-index__link[aria-current="page"]::after { transform: scaleX(1); background: var(--signal); }

.masthead__cta { flex: none; margin-left: 6px; }

.cmd-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 18px;
  font-family: var(--font-display);
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #160B02;
  background: var(--signal);
  border: 1px solid var(--signal);
  border-radius: var(--radius);
  text-decoration: none;
  box-shadow: 0 6px 16px rgba(255, 122, 26, 0.18);
  transition: background 0.18s ease, border-color 0.18s ease, transform 0.16s ease, box-shadow 0.18s ease;
}
.cmd-btn::after {
  content: "";
  width: 6px;
  height: 6px;
  border-top: 1.5px solid currentColor;
  border-right: 1.5px solid currentColor;
  transform: rotate(45deg);
}
.cmd-btn:hover {
  background: #FF9347;
  border-color: #FF9347;
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(255, 122, 26, 0.28);
}

.ticker {
  border-top: 1px solid var(--line);
  background: rgba(16, 42, 76, 0.52);
}
.ticker__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 34px;
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--ash);
}
.ticker__label {
  flex: none;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--gold);
}
.ticker__list {
  display: flex;
  align-items: center;
  gap: 20px;
  overflow: hidden;
}
.ticker__item {
  position: relative;
  padding-left: 12px;
  white-space: nowrap;
}
.ticker__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--pitch);
  transform: translateY(-50%);
}
.ticker__item--live::before { background: var(--signal); }

/* 浏览路径进度（由脚本注入） */
.path-meter {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
  background: rgba(247, 244, 238, 0.06);
}
.path-meter__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--pitch), var(--signal));
  transform: scaleX(0);
  transform-origin: 0 50%;
}

/* ---------- 6 页脚 ---------- */
.site-footer {
  margin-top: clamp(40px, 6vw, 80px);
  padding-block: clamp(40px, 6vw, 72px) 26px;
  background: var(--night);
  border-top: 1px solid var(--line);
  color: var(--ash);
}

.seat-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.25fr;
  gap: clamp(26px, 4vw, 56px);
}
.seat-grid__col { min-width: 0; }
.seat-grid__col + .seat-grid__col {
  padding-left: clamp(18px, 3vw, 36px);
  border-left: 1px solid var(--line);
}

.footer__mark {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--fs-24);
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--warm);
}
.footer__mark::after {
  content: "";
  display: block;
  width: 34px;
  height: 2px;
  margin-top: 12px;
  background: var(--signal);
}
.footer__lead {
  margin-top: 18px;
  max-width: 26em;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: rgba(247, 244, 238, 0.82);
}
.footer__note {
  margin-top: 10px;
  max-width: 28em;
  font-size: var(--fs-12);
  line-height: 1.75;
  color: rgba(167, 176, 189, 0.85);
}
.footer__head {
  font-family: var(--font-display);
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
}
.footer__links {
  margin-top: 16px;
  display: grid;
  gap: 9px;
}
.footer__links a {
  position: relative;
  display: inline-block;
  font-size: var(--fs-14);
  color: var(--ash);
  text-decoration: none;
  transition: color 0.18s ease;
}
.footer__links a::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 0.8em;
  width: 7px;
  height: 1px;
  background: var(--pitch);
  opacity: 0;
  transition: opacity 0.18s ease;
}
.footer__links a:hover { color: var(--warm); }
.footer__links a:hover::before { opacity: 1; }

.footer__contact {
  margin-top: 16px;
  display: grid;
  gap: 2px;
}
.contact-line {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  padding-block: 7px;
  font-size: var(--fs-14);
  border-bottom: 1px dashed rgba(167, 176, 189, 0.18);
}
.contact-line:last-child { border-bottom: 0; }
.contact-line__key {
  flex: none;
  min-width: 2.6em;
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: rgba(167, 176, 189, 0.72);
}
.contact-line__val { color: var(--warm); word-break: break-word; }

.copy-btn {
  flex: none;
  margin-left: auto;
  padding: 3px 10px;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--ash);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  transition: color 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}
.copy-btn:hover {
  color: var(--warm);
  border-color: var(--warm);
  background: rgba(247, 244, 238, 0.06);
}
.copy-btn[data-copied="true"] {
  color: #04220F;
  background: var(--pitch);
  border-color: var(--pitch);
}

.footer-meta {
  margin-top: clamp(30px, 4vw, 48px);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 26px;
  font-size: var(--fs-12);
  color: rgba(167, 176, 189, 0.85);
  border-top: 1px dashed rgba(167, 176, 189, 0.24);
}
.footer-meta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}
.footer-meta__links a {
  color: var(--ash);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.footer-meta__links a:hover {
  color: var(--warm);
  border-bottom-color: var(--signal);
}
.footer-meta__copy {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}

/* ---------- 7 响应式 ---------- */
@media (max-width: 1000px) {
  .nav-toggle { display: inline-flex; }

  .masthead { gap: 10px; }
  .masthead__wordmark { font-size: var(--fs-16); letter-spacing: 0.1em; }
  .masthead__status { display: none; }
  .masthead__cta { margin-left: 0; }
  .cmd-btn { padding: 8px 13px; font-size: var(--fs-12); letter-spacing: 0.06em; }
  .cmd-btn::after { display: none; }

  .masthead__nav {
    position: absolute;
    left: 0; right: 0; top: 100%;
    margin-left: 0;
    display: none;
    max-height: calc(100vh - 110px);
    overflow-y: auto;
    padding: 10px var(--gutter) 22px;
    background: linear-gradient(180deg, rgba(16, 42, 76, 0.99), rgba(11, 27, 51, 0.99));
    border-top: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    box-shadow: 0 24px 44px rgba(2, 8, 18, 0.55);
  }
  .masthead__nav[data-open="true"] { display: block; }

  .nav-index { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav-index__link {
    padding: 13px 12px;
    font-size: var(--fs-16);
    letter-spacing: 0.04em;
    border-radius: var(--radius);
  }
  .nav-index__link::after { display: none; }
  .nav-index__link:hover { background: rgba(247, 244, 238, 0.07); }
  .nav-index__link[aria-current="page"] {
    background: rgba(255, 122, 26, 0.12);
    box-shadow: inset 2px 0 0 var(--signal);
  }

  .ticker { display: none; }
}

@media (max-width: 1024px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .seat-grid { grid-template-columns: 1fr 1fr; }
  .seat-grid__col { border-left: 0; padding-left: 0; }
  .seat-grid__col--brand { grid-column: 1 / -1; }
  .seat-grid__col:not(.seat-grid__col--brand) {
    border-top: 1px solid var(--line);
    padding-top: 22px;
  }
}

@media (max-width: 760px) {
  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .prose { max-width: none; }
}

@media (max-width: 620px) {
  .seat-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-meta { flex-direction: column; align-items: flex-start; }
  .grid--12 { grid-template-columns: minmax(0, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .btn:hover,
  .cmd-btn:hover,
  .card:hover,
  .card:focus-within { transform: none; }
}