/* ============================================================
   胜天国际中心 — /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 页头 / 页脚 / 通用组件
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h, 78px) + 16px);
}

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

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

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

a { color: inherit; }

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

table { border-collapse: collapse; }

/* ---------- 变量 ---------- */
:root {
  --paper: #F6EFE4;
  --paper-lift: #FFFBF5;
  --ink: #0E2A45;
  --ink-soft: #1B4266;
  --orange: #F2701F;
  --orange-deep: #C24E10;
  --cyan: #00E3C8;
  --cyan-deep: #178F81;
  --fold: #D8412A;
  --muted: #6A6055;

  --rule: rgba(14, 42, 69, .14);
  --rule-strong: rgba(14, 42, 69, .30);
  --rule-invert: rgba(246, 239, 228, .18);

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

  --wrap: 1240px;
  --gut: clamp(18px, 3.2vw, 40px);
  --header-h: 78px;
  --bottom-bar-h: 0px;

  --cut: 16px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

@media (max-width: 920px) {
  :root {
    --header-h: 64px;
    --bottom-bar-h: 54px;
    --cut: 13px;
  }
}

/* ---------- 中文排版基底 ---------- */
body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(70% 55% at 6% -6%, rgba(242, 112, 31, .12), transparent 62%),
    radial-gradient(60% 50% at 96% 4%, rgba(0, 227, 200, .10), transparent 60%),
    repeating-linear-gradient(0deg, rgba(14, 42, 69, .026) 0 1px, transparent 1px 32px);
  padding-top: var(--header-h);
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: .01em;
  color: var(--ink);
}

p { text-wrap: pretty; }

::selection { background: var(--cyan); color: var(--ink); }

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

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 200;
  padding: 11px 18px;
  background: var(--ink);
  color: var(--paper-lift);
  font-weight: 700;
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
  transition: top 160ms var(--ease);
}

.skip-link:focus { top: 12px; }

/* ---------- 容器 / 网格 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.section { padding-block: clamp(40px, 6vw, 88px); }

.section__head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 36px);
}

.section__title {
  font-size: clamp(1.75rem, 3.4vw, 2.6rem);
  line-height: 1.22;
}

.section__lead {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gut);
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }

@media (max-width: 1040px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .span-3, .span-4, .span-5, .span-6 { grid-column: span 3; }
  .span-7, .span-8, .span-12 { grid-column: span 6; }
}

@media (max-width: 700px) {
  .span-3, .span-4, .span-5, .span-6,
  .span-7, .span-8, .span-12 { grid-column: span 6; }
}

/* ---------- 文字标记 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange-deep);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--orange);
}

.index-tag {
  display: inline-flex;
  align-items: center;
  gap: .45em;
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .05em;
  padding: 3px 9px;
  color: var(--ink);
  background: var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
}

.index-tag--ghost {
  background: transparent;
  color: var(--cyan-deep);
  box-shadow: inset 0 0 0 1px var(--cyan-deep);
}

.sticker {
  display: inline-block;
  padding: 7px 15px;
  background: var(--fold);
  color: var(--paper-lift);
  font-size: .86rem;
  font-weight: 700;
  transform: rotate(-1.8deg);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

/* ---------- 正文 ---------- */
.prose {
  max-width: 68ch;
  font-size: 1.06rem;
  line-height: 1.9;
  color: var(--ink);
}

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

.prose h2 { font-size: clamp(1.45rem, 2.4vw, 1.9rem); margin-top: 1.7em; }
.prose h3 { font-size: clamp(1.2rem, 1.8vw, 1.4rem); margin-top: 1.4em; }

.prose ul { padding-left: 0; }

.prose li {
  position: relative;
  padding-left: 1.4em;
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .76em;
  width: 9px;
  height: 2px;
  background: var(--orange);
}

.prose a {
  color: var(--orange-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--muted);
}

.breadcrumb a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--rule-strong);
}

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

.breadcrumb__sep { color: var(--orange); }

.breadcrumb__current { color: var(--muted); }

/* ---------- 面板 ---------- */
.panel {
  position: relative;
  background: var(--paper-lift);
  border: 1px solid var(--rule);
  padding: clamp(18px, 2.4vw, 30px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  transition: transform 160ms var(--ease), border-color 160ms var(--ease);
}

.panel--entry { box-shadow: inset 4px 0 0 var(--orange); }

.panel--quiet { background: rgba(255, 251, 245, .62); }

.panel:hover { transform: translateY(-2px); border-color: var(--rule-strong); }

/* ---------- 图像容器（页面阶段放 <img> 占位） ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--rule);
  background:
    linear-gradient(135deg, rgba(27, 66, 102, .16), rgba(242, 112, 31, .16)),
    linear-gradient(180deg, var(--paper-lift), var(--paper));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

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

.media--wide { aspect-ratio: 16 / 9; }
.media--local { aspect-ratio: 5 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media--portrait { aspect-ratio: 3 / 4; }

.media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 100%;
  padding: 8px 13px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--paper-lift);
  background: rgba(14, 42, 69, .86);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .03em;
  text-decoration: none;
  white-space: nowrap;
  color: var(--ink);
  background: transparent;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: transform 160ms var(--ease), background 160ms var(--ease),
              color 160ms var(--ease), box-shadow 160ms var(--ease);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary { background: var(--orange); color: var(--ink); }
.btn--primary:hover { background: #FF8438; }

.btn--ghost {
  color: var(--paper-lift);
  box-shadow: inset 0 0 0 1px rgba(246, 239, 228, .45);
}

.btn--ghost:hover {
  color: var(--cyan);
  background: rgba(0, 227, 200, .10);
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.btn--plain {
  background: var(--paper-lift);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--rule-strong);
}

.btn--plain:hover {
  color: var(--orange-deep);
  box-shadow: inset 0 0 0 1px var(--orange);
}

/* ============================================================
   页头
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  color: var(--paper-lift);
  background: linear-gradient(180deg, rgba(14, 42, 69, .92), rgba(14, 42, 69, .64));
  border-bottom: 1px solid rgba(246, 239, 228, .10);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
  backdrop-filter: blur(10px) saturate(120%);
  transition: background 220ms var(--ease), border-color 220ms var(--ease),
              box-shadow 220ms var(--ease);
}

.site-header.is-solid {
  background: var(--ink);
  border-bottom-color: rgba(0, 227, 200, .38);
  box-shadow: 0 14px 34px -22px rgba(14, 42, 69, .95);
}

.site-header__bar {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  height: var(--header-h);
  padding-inline: var(--gut);
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 24px);
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  text-decoration: none;
}

.brand__mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--paper-lift);
  background: var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: background 180ms var(--ease), color 180ms var(--ease);
}

.brand:hover .brand__mark,
.brand:focus-visible .brand__mark { background: var(--cyan); color: var(--ink); }

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.16;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: .02em;
}

.brand__tagline {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .16em;
  color: rgba(246, 239, 228, .62);
}

/* 状态胶囊 */
.header-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-size: .69rem;
  letter-spacing: .08em;
  color: rgba(246, 239, 228, .82);
  box-shadow: inset 0 0 0 1px rgba(246, 239, 228, .22);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%);
  white-space: nowrap;
}

.header-status__dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 227, 200, .22);
}

/* 导航 */
.nav { margin-inline-start: auto; }

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(2px, .7vw, 10px);
}

.nav__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 11px;
  font-size: .94rem;
  letter-spacing: .03em;
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%);
  transition: color 180ms var(--ease), background 180ms var(--ease);
}

.nav__num {
  font-family: var(--font-mono);
  font-size: .66rem;
  color: var(--cyan);
  opacity: .85;
  transition: color 180ms var(--ease);
}

.nav__label { white-space: nowrap; }

.nav__link:hover { color: var(--cyan); background: rgba(0, 227, 200, .10); }

.nav__link[aria-current="page"] {
  color: var(--ink);
  background: var(--cyan);
  font-weight: 700;
}

.nav__link[aria-current="page"] .nav__num { color: var(--ink); opacity: 1; }

/* 页头操作区 */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-inline-start: clamp(8px, 1.4vw, 20px);
}

.nav-toggle { display: none; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  margin-top: clamp(56px, 8vw, 120px);
  padding: clamp(76px, 10vw, 140px) 0
           calc(clamp(26px, 3vw, 40px) + var(--bottom-bar-h));
  color: rgba(246, 239, 228, .84);
  background:
    radial-gradient(90% 70% at 92% 0%, rgba(242, 112, 31, .22), transparent 60%),
    radial-gradient(70% 60% at 2% 100%, rgba(0, 227, 200, .10), transparent 62%),
    linear-gradient(180deg, #0E2A45 0%, #0A1F34 100%);
  clip-path: polygon(0 clamp(26px, 4vw, 54px), 100% 0, 100% 100%, 0 100%);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: clamp(28px, 4vw, 52px);
}

.footer__top {
  display: grid;
  gap: clamp(28px, 4vw, 64px);
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 2fr);
}

.footer__identity { display: flex; flex-direction: column; }

.footer__brand {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.18;
  color: var(--paper-lift);
}

.footer__tagline {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .2em;
  color: var(--cyan);
}

.footer__note {
  margin-top: 18px;
  max-width: 34ch;
  font-size: .92rem;
  line-height: 1.75;
  color: rgba(246, 239, 228, .68);
}

.footer__cols {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.footer__col { min-width: 0; }

.footer__col-title {
  padding-bottom: 10px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--cyan);
  border-bottom: 1px solid var(--rule-invert);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 28px;
  font-size: .95rem;
  text-decoration: none;
  color: rgba(246, 239, 228, .86);
  transition: color 160ms var(--ease), transform 160ms var(--ease);
}

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

.footer__num {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .04em;
  padding: 2px 6px;
  color: var(--cyan);
  background: rgba(0, 227, 200, .12);
  transition: background 160ms var(--ease), color 160ms var(--ease);
}

.footer__link:hover .footer__num { background: var(--cyan); color: var(--ink); }

.footer__contact {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding-top: clamp(20px, 3vw, 32px);
  border-top: 1px solid var(--rule-invert);
}

.footer__panel {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
}

.footer__panel-label {
  font-family: var(--font-mono);
  font-size: .67rem;
  letter-spacing: .2em;
  color: rgba(246, 239, 228, .5);
}

.footer__panel-value {
  font-size: .98rem;
  color: var(--paper-lift);
  overflow-wrap: anywhere;
}

.footer__hint {
  grid-column: 1 / -1;
  max-width: 76ch;
  font-size: .86rem;
  line-height: 1.8;
  color: rgba(246, 239, 228, .6);
}

.footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 28px;
  padding-top: clamp(18px, 2.6vw, 28px);
  border-top: 1px solid var(--rule-invert);
  font-family: var(--font-mono);
  font-size: .73rem;
  letter-spacing: .06em;
}

.footer__icp { color: rgba(246, 239, 228, .72); }
.footer__copy { color: rgba(246, 239, 228, .56); }
.footer__closing { color: var(--cyan); }

/* ============================================================
   滚动显现
   ============================================================ */
.reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: no-preference) {
  .reveal.is-pending {
    opacity: 0;
    transform: translateY(16px);
  }

  .reveal.is-inview {
    opacity: 1;
    transform: none;
    transition: opacity 450ms var(--ease), transform 450ms var(--ease);
  }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1180px) {
  .header-status { display: none; }
}

@media (max-width: 1040px) {
  .nav__num { display: none; }
  .nav__link { padding: 9px 8px; font-size: .9rem; }
}

@media (max-width: 920px) {
  .site-header__actions { margin-inline-start: auto; }
  .site-header__actions .btn--ghost { display: none; }
  .site-header__actions .btn { padding: 10px 16px; font-size: .9rem; }

  .nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: var(--bottom-bar-h);
    z-index: 105;
    margin-inline-start: 0;
    max-height: 0;
    overflow: hidden;
    padding-inline: var(--gut);
    background: var(--ink);
    border-top: 1px solid rgba(0, 227, 200, .30);
    box-shadow: 0 -18px 40px -26px rgba(0, 0, 0, .8);
    transition: max-height 200ms var(--ease);
  }

  .nav[data-open] {
    max-height: min(72vh, 520px);
    overflow-y: auto;
    padding-block: 10px 16px;
  }

  .nav__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .nav__item { border-bottom: 1px solid var(--rule-invert); }

  .nav__link {
    width: 100%;
    padding: 14px 10px;
    font-size: 1rem;
  }

  .nav__num { display: inline; }

  .nav-toggle {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 110;
    height: var(--bottom-bar-h);
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-inline: var(--gut);
    background: var(--ink);
    color: var(--paper-lift);
    border-top: 1px solid rgba(0, 227, 200, .40);
    font-family: var(--font-mono);
    font-size: .78rem;
    letter-spacing: .16em;
  }

  .nav-toggle__label::before {
    content: "▚ ";
    color: var(--cyan);
  }

  .nav-toggle__bars {
    display: inline-flex;
    flex-direction: column;
    gap: 4px;
    width: 20px;
  }

  .nav-toggle__bars i {
    display: block;
    height: 2px;
    background: currentColor;
    transition: transform 180ms var(--ease), opacity 180ms var(--ease);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) {
    transform: translateY(6px) 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(-6px) rotate(-45deg);
  }
}

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

@media (max-width: 640px) {
  body { font-size: 16.5px; line-height: 1.82; }
  .brand__mark { width: 36px; height: 36px; font-size: 1.05rem; }
  .brand__tagline { display: none; }
  .site-header__actions .btn { padding: 9px 13px; font-size: .86rem; }
  .footer__cols { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .footer__contact { grid-template-columns: minmax(0, 1fr); }
  .footer__meta { flex-direction: column; align-items: flex-start; }
  .site-footer { clip-path: polygon(0 22px, 100% 0, 100% 100%, 0 100%); }
}

/* ---------- 打印 ---------- */
@media print {
  body {
    padding: 0;
    background: #fff;
  }
  .site-header,
  .nav-toggle,
  .skip-link { display: none; }
  .site-footer { color: #000; background: #fff; clip-path: none; }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal,
  .reveal.is-pending {
    opacity: 1;
    transform: none;
  }

  .btn:hover,
  .panel:hover,
  .footer__link:hover { transform: none; }
}