/* ============================================================
   明昇看台 · 共享样式表  /assets/site.css
   雪白 · 暖沙 · 深空蓝 · 明昇橙 · 草原绿
   ============================================================ */

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

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

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

ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 地域基底 */
  --snow: #f7f5f0;
  --snow-2: #efece3;
  --sand: #e7dbc6;
  --sand-2: #d5c19c;

  /* 深空蓝 */
  --ink: #0c141f;
  --ink-2: #2b3745;
  --blue: #123a6b;
  --blue-2: #0a2244;
  --blue-3: #1d5493;

  /* 明昇橙 */
  --orange: #ef5a0c;
  --orange-2: #ff8a3d;
  --orange-deep: #cc4a06;

  /* 草原绿 */
  --grass: #2b7a51;

  --line: rgba(12, 20, 31, .14);
  --line-strong: rgba(12, 20, 31, .3);
  --on-dark: rgba(247, 245, 240, .78);
  --on-dark-dim: rgba(247, 245, 240, .52);

  --shell: 1200px;
  --pad: clamp(16px, 4vw, 40px);

  --r-sm: 2px;
  --r-md: 6px;
  --r-lg: 14px;

  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --shadow-1: 0 1px 0 rgba(12, 20, 31, .05), 0 14px 30px -20px rgba(10, 34, 68, .5);
  --shadow-2: 0 26px 52px -30px rgba(10, 34, 68, .6);

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

/* ---------- 3. 基础与中文排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--snow);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -.012em;
  text-wrap: balance;
}

p, li { text-wrap: pretty; }

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

::selection { background: var(--orange); color: #fff; }

/* ---------- 4. 工具类 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.section { padding-block: clamp(2.4rem, 6vw, 5rem); }

.page-head {
  position: relative;
  padding-block: clamp(1.9rem, 4.6vw, 3.4rem);
}

.mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

.display-xl {
  font-size: clamp(2.5rem, 8vw, 5.4rem);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -.03em;
}

.display-lg {
  font-size: clamp(1.85rem, 4.6vw, 3.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.022em;
}

.lede {
  max-width: 60ch;
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  line-height: 1.85;
  color: var(--ink-2);
}

.index-num {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--orange);
}

.dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--grass);
  box-shadow: 0 0 0 3px rgba(43, 122, 81, .26);
}

/* ---------- 5. Skip link ---------- */
.skip-link {
  position: absolute;
  top: 0;
  left: var(--pad);
  z-index: 300;
  padding: .6rem 1.05rem;
  font-size: .86rem;
  font-weight: 700;
  color: #fff;
  background: var(--orange);
  border-radius: 0 0 var(--r-md) var(--r-md);
  transform: translateY(-140%);
  transition: transform .2s var(--ease);
}

.skip-link:focus { transform: translateY(0); }

/* ---------- 6. 头部：状态横带 + 主梁 ---------- */
.site-mast {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--snow);
  border-bottom: 1px solid var(--line-strong);
}

.mast-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--orange) 0%, var(--orange-2) 58%, var(--grass) 100%);
  pointer-events: none;
  z-index: 2;
}

.mast-rim {
  background: var(--blue-2);
  color: var(--snow);
  border-bottom: 1px solid rgba(247, 245, 240, .1);
}

.mast-rim__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 38px;
}

.mast-rim__note {
  display: flex;
  align-items: center;
  gap: .56rem;
  font-size: .78rem;
  letter-spacing: .06em;
  color: rgba(247, 245, 240, .84);
}

.mast-rim__meta {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  font-size: .74rem;
  letter-spacing: .05em;
  color: var(--on-dark-dim);
}

.mast-rim__meta .mono { color: var(--orange-2); }

.mast-body__inner {
  display: flex;
  align-items: center;
  gap: clamp(.9rem, 2.6vw, 2.2rem);
  min-height: 76px;
}

/* 品牌 */
.mast-brand {
  display: flex;
  align-items: center;
  gap: .72rem;
  flex: none;
  padding: .3rem 0;
}

.mast-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: none;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1;
  color: #fff;
  background: var(--orange);
  border-radius: 3px 3px 14px 3px;
  box-shadow: 3px 3px 0 var(--blue-2);
}

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

.mast-brand__text strong {
  font-size: 1.16rem;
  font-weight: 800;
  letter-spacing: .02em;
}

.mast-brand__text small {
  font-family: var(--mono);
  font-size: .6rem;
  letter-spacing: .22em;
  color: var(--blue-3);
}

/* 主导航 */
.mast-nav { margin-left: auto; }

.mast-nav__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .12rem;
}

.mast-nav__list a {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: .5rem .78rem;
  font-size: .9rem;
  font-weight: 600;
  color: var(--ink-2);
  border-radius: var(--r-sm);
  transition: color .18s var(--ease), background-color .18s var(--ease);
}

.mast-nav__list a::after {
  content: "";
  position: absolute;
  left: .78rem;
  right: .78rem;
  bottom: .22rem;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .24s var(--ease);
}

.mast-nav__list a:hover {
  color: var(--ink);
  background: var(--snow-2);
}

.mast-nav__list a:hover::after { transform: scaleX(1); }

.mast-nav__list a[aria-current="page"] { color: var(--orange); }
.mast-nav__list a[aria-current="page"]::after { transform: scaleX(1); }

.mast-nav__foot { display: none; }

/* 移动端目录按钮 */
.mast-toggle {
  display: none;
  align-items: center;
  gap: .55rem;
  margin-left: auto;
  padding: .55rem .82rem;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ink);
  background: var(--snow-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.mast-toggle:hover { border-color: var(--ink); }

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

.mast-toggle__bars i {
  display: block;
  height: 2px;
  background: var(--ink);
  transition: transform .24s var(--ease), opacity .18s var(--ease);
}

.site-mast[data-open] .mast-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.site-mast[data-open] .mast-toggle__bars i:nth-child(2) { opacity: 0; }
.site-mast[data-open] .mast-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

@keyframes mastNavIn {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- 7. 页脚 ---------- */
.site-base {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6rem);
  background: var(--blue-2);
  color: var(--snow);
  overflow: hidden;
}

.base-ridge {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 104px;
  background: var(--blue);
  opacity: .62;
  pointer-events: none;
  clip-path: polygon(0 100%, 0 64%, 7% 42%, 13% 60%, 21% 27%, 29% 56%, 37% 33%, 45% 62%, 53% 39%, 62% 66%, 70% 31%, 78% 58%, 86% 35%, 93% 60%, 100% 44%, 100% 100%);
}

.site-base::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--orange-2) 55%, var(--grass));
}

.base-main {
  position: relative;
  display: grid;
  grid-template-columns: 1.45fr 1fr 1.35fr;
  gap: clamp(1.6rem, 4vw, 3.4rem);
  padding-block: clamp(2.6rem, 6vw, 4.4rem);
}

.base-brand__name {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: .02em;
}

.base-brand__latin {
  margin-top: .35rem;
  font-size: .66rem;
  letter-spacing: .26em;
  color: var(--orange-2);
}

.base-brand__note {
  max-width: 34ch;
  margin-top: .9rem;
  font-size: .9rem;
  line-height: 1.78;
  color: var(--on-dark);
}

.base-brand__cta { margin-top: 1.3rem; }

.base-col__title {
  padding-bottom: .7rem;
  margin-bottom: .95rem;
  font-family: var(--mono);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .24em;
  color: var(--orange-2);
  border-bottom: 1px solid rgba(247, 245, 240, .16);
}

.base-list {
  display: grid;
  gap: .5rem;
  font-size: .92rem;
}

.base-list a {
  color: var(--on-dark);
  transition: color .18s var(--ease);
}

.base-list a:hover { color: var(--orange-2); }

.base-list--meta li {
  display: grid;
  grid-template-columns: 3.1em 1fr;
  gap: .7rem;
  align-items: baseline;
  font-size: .88rem;
  line-height: 1.7;
  color: var(--on-dark);
}

.base-list--meta .k {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .14em;
  color: var(--on-dark-dim);
}

.base-legal {
  position: relative;
  border-top: 1px solid rgba(247, 245, 240, .14);
  background: rgba(0, 0, 0, .2);
}

.base-legal__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem 1.6rem;
  padding-block: 1.1rem;
  font-size: .78rem;
  color: var(--on-dark-dim);
}

.base-legal__icp { letter-spacing: .04em; }

.base-legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-left: auto;
}

.base-legal__links a {
  color: var(--on-dark);
  transition: color .18s var(--ease);
}

.base-legal__links a:hover { color: var(--orange-2); }

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  padding: .78rem 1.45rem;
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: .04em;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
}

.btn--solid {
  color: #fff;
  background: var(--orange);
  box-shadow: 3px 3px 0 var(--blue-2);
}

.btn--solid:hover {
  background: var(--orange-deep);
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--blue-2);
}

.btn--solid:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--blue-2);
}

.btn--line {
  color: var(--ink);
  border-color: var(--ink);
}

.btn--line:hover {
  color: var(--snow);
  background: var(--ink);
}

.btn--ghost {
  color: var(--ink);
  background: var(--snow-2);
  border-color: var(--line-strong);
}

.btn--ghost:hover { border-color: var(--ink); }

/* ---------- 9. 面包屑 / 正文 / 章节抬头 ---------- */
.crumb {
  display: flex;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: rgba(12, 20, 31, .52);
}

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

.crumb li + li::before {
  content: "/";
  margin: 0 .6rem;
  color: rgba(12, 20, 31, .28);
}

.crumb a { color: var(--blue-3); transition: color .18s var(--ease); }
.crumb a:hover { color: var(--orange); }
.crumb [aria-current="page"] { color: var(--ink); }

.prose {
  max-width: 68ch;
  font-size: 1.02rem;
  line-height: 1.9;
  color: var(--ink-2);
}

.prose > * + * { margin-top: 1.15em; }

.prose h2 {
  margin-top: 2.2em;
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  color: var(--ink);
}

.prose h3 {
  margin-top: 1.8em;
  font-size: 1.15rem;
  color: var(--ink);
}

.prose ul {
  display: grid;
  gap: .5em;
  padding-left: 1.15em;
}

.prose ul li { position: relative; }

.prose ul li::before {
  content: "";
  position: absolute;
  left: -1.15em;
  top: .74em;
  width: 6px;
  height: 6px;
  background: var(--orange);
  border-radius: 1px;
}

.prose strong { font-weight: 700; color: var(--ink); }

.prose a {
  color: var(--blue-3);
  text-decoration: underline;
  text-underline-offset: .22em;
  text-decoration-thickness: 1px;
}

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

.section-head {
  display: grid;
  gap: .5rem;
  margin-bottom: clamp(1.2rem, 3vw, 2rem);
}

.section-head__eyebrow {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--blue-3);
}

.section-head__title {
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -.022em;
}

.section-head__note {
  max-width: 60ch;
  font-size: .96rem;
  color: var(--ink-2);
}

/* ---------- 10. 网格 / 卡片 / 面板 / 标签 ---------- */
.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.6rem);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card {
  position: relative;
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-1);
}

.card--float {
  box-shadow: 4px 4px 0 var(--sand-2), var(--shadow-2);
}

.card__kicker {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--orange);
}

.card__title {
  margin-top: .5rem;
  font-size: 1.14rem;
  font-weight: 800;
}

.card__body {
  margin-top: .6rem;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--ink-2);
}

.panel {
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: var(--snow-2);
  overflow: hidden;
}

.panel__head {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .62rem .95rem;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--snow);
  background: var(--blue-2);
}

.panel__body { padding: clamp(1rem, 2.2vw, 1.5rem); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .26rem .62rem;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .13em;
  color: var(--ink-2);
  background: var(--snow);
  border: 1px solid var(--line-strong);
  border-radius: 1px;
}

.tag--orange { color: var(--orange); border-color: var(--orange); }
.tag--grass { color: var(--grass); border-color: var(--grass); }
.tag--blue { color: var(--blue-3); border-color: var(--blue-3); }

/* ---------- 11. 图文容器（页面阶段放图） ---------- */
.figure { display: grid; gap: .7rem; }

.figure__media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  aspect-ratio: 16 / 10;
  background:
    linear-gradient(135deg, var(--sand) 0%, var(--snow-2) 55%, #ffffff 100%);
}

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

.figure__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .55;
  background: repeating-linear-gradient(115deg, rgba(18, 58, 107, .12) 0 2px, transparent 2px 13px);
}

.figure__cap {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: rgba(12, 20, 31, .55);
}

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

/* ---------- 12. 标签页组件 ---------- */
.tabs { display: grid; gap: 1.2rem; }

.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  padding: .35rem;
  background: var(--snow-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
}

.tablist [role="tab"] {
  padding: .55rem 1rem;
  font-size: .86rem;
  font-weight: 700;
  color: var(--ink-2);
  border-radius: 3px;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease);
}

.tablist [role="tab"]:hover { background: rgba(255, 255, 255, .72); }

.tablist [role="tab"][aria-selected="true"] {
  color: var(--snow);
  background: var(--blue-2);
}

.tabpanel:focus { outline: none; }
.tabpanel[hidden] { display: none; }

/* ---------- 13. 显现 ---------- */
.has-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .55s var(--ease), transform .55s var(--ease);
}

.has-reveal [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 14. 响应式 ---------- */
@media (max-width: 1024px) {
  .base-main { grid-template-columns: 1.3fr 1fr 1.2fr; }
}

@media (max-width: 960px) {
  .base-main { grid-template-columns: 1fr 1fr; }
  .base-brand { grid-column: 1 / -1; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

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

  .mast-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    margin: 0;
    padding: .7rem var(--pad) 1.2rem;
    background: var(--snow);
    border-bottom: 1px solid var(--line-strong);
    box-shadow: var(--shadow-2);
    max-height: calc(100vh - 100%);
    overflow-y: auto;
  }

  .site-mast[data-open] .mast-nav {
    display: block;
    animation: mastNavIn .3s var(--ease) both;
  }

  .mast-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border-top: 1px solid var(--line);
  }

  .mast-nav__list li { border-bottom: 1px solid var(--line); }

  .mast-nav__list a {
    width: 100%;
    justify-content: space-between;
    padding: .92rem .2rem;
    font-size: 1rem;
    border-radius: 0;
  }

  .mast-nav__list a::after {
    content: "→";
    position: static;
    display: block;
    width: auto;
    height: auto;
    bottom: auto;
    margin-left: .8rem;
    font-family: var(--mono);
    color: var(--orange);
    background: none;
    transform: none;
    opacity: 0;
    transition: opacity .2s var(--ease);
  }

  .mast-nav__list a:hover { background: transparent; }
  .mast-nav__list a:hover::after { transform: none; opacity: 1; }
  .mast-nav__list a[aria-current="page"]::after { transform: none; opacity: 1; }

  .mast-nav__foot {
    display: block;
    margin-top: 1rem;
    font-size: .8rem;
    line-height: 1.7;
    color: rgba(12, 20, 31, .6);
  }
}

@media (max-width: 720px) {
  .mast-rim__inner {
    justify-content: flex-start;
    min-height: 34px;
  }

  .mast-rim__meta { display: none; }

  .mast-rim__note {
    font-size: .74rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .mast-body__inner { min-height: 64px; }

  .mast-brand__mark { width: 34px; height: 34px; font-size: .96rem; }
  .mast-brand__text strong { font-size: 1.04rem; }
  .mast-brand__text small { font-size: .56rem; letter-spacing: .18em; }

  .mast-toggle__label { display: none; }
}

@media (max-width: 640px) {
  .grid--2,
  .grid--3 { grid-template-columns: 1fr; }

  .base-main { grid-template-columns: 1fr; }
  .base-legal__links { margin-left: 0; }
}

/* ---------- 15. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .has-reveal [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}