/* ============================================================
   利记 · LIJI  |  /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ============================================================ */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, 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%; }
img { height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
input, textarea, select { font: inherit; }
a { color: inherit; }
table { border-collapse: collapse; width: 100%; }
[hidden] { display: none !important; }

/* ---------- 变量 ---------- */
:root {
  --ink:        #0E2B22;
  --ink-deep:   #071A14;
  --ink-mid:    #17402F;
  --paper:      #F5F2E9;
  --paper-2:    #E4DFD1;
  --brass:      #BE8F42;
  --brass-lt:   #E2C68C;
  --cinnabar:   #B33A2B;
  --black:      #14120F;
  --gray:       #6C6A62;

  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, "Times New Roman", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --sans-cond: "Noto Sans SC Condensed", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --rail-w: 200px;
  --masthead-h: 56px;
  --gutter: clamp(18px, 4vw, 56px);
  --measure: 1180px;

  --rule: rgba(20, 18, 15, 0.14);
  --rule-strong: rgba(20, 18, 15, 0.28);
  --rule-invert: rgba(190, 143, 66, 0.28);
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

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

/* ---------- 中文排版基线 ---------- */
body {
  background: var(--paper);
  color: var(--black);
  font-family: var(--sans-cond);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  padding-top: var(--masthead-h);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
@media (min-width: 901px) { body { padding-left: var(--rail-w); } }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0.01em;
  text-wrap: balance;
}
h1 { font-size: clamp(32px, 6vw, 64px); }
h2 { font-size: clamp(24px, 3.4vw, 44px); }
h3 { font-size: clamp(19px, 2vw, 26px); }
p { text-wrap: pretty; }

a { text-decoration-thickness: 1px; text-underline-offset: 3px; }

:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 3px;
  border-radius: 1px;
}

#main-content { display: block; }

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--brass);
  color: var(--ink-deep);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transform: translateY(-180%);
  transition: transform 0.2s var(--ease);
}
.skip-link:focus { transform: none; }

/* ---------- 滚动进度尺 ---------- */
.scroll-meter {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 120;
  pointer-events: none;
}
.scroll-meter__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--brass), var(--cinnabar));
}

/* ---------- 顶部品牌带 ---------- */
.masthead {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--masthead-h);
  z-index: 90;
  display: flex;
  align-items: center;
  background: var(--ink-deep);
  border-bottom: 1px solid var(--rule-invert);
}
.masthead__inner {
  width: 100%;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.5vw, 32px);
}
@media (min-width: 901px) {
  .masthead__inner { padding-left: calc(var(--rail-w) + var(--gutter)); }
}

.masthead__brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-width: 0;
}
.masthead__mark {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.06em;
  color: var(--paper);
  white-space: nowrap;
}
.masthead__mark::after {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  margin-left: 10px;
  background: var(--cinnabar);
  vertical-align: middle;
  transform: translateY(-2px) rotate(45deg);
}
.masthead__tagline {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--brass);
  white-space: nowrap;
}
.masthead__tail {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 20px);
}

/* 批次色带 */
.batch-band {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 9px;
}
.batch-band__cell {
  display: block;
  height: 100%;
  width: 22px;
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}
.batch-band__cell--brass    { background: var(--brass); }
.batch-band__cell--brass-lt { background: var(--brass-lt); }
.batch-band__cell--cinnabar { background: var(--cinnabar); }
.batch-band__cell--mid      { background: var(--ink-mid); box-shadow: inset 0 0 0 1px var(--rule-invert); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  padding: 11px 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 100%, 12px 100%);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.btn--brass { background: var(--brass); color: var(--ink-deep); font-weight: 600; }
.btn--brass:hover { background: var(--brass-lt); }
.btn--ghost { color: var(--brass-lt); box-shadow: inset 0 0 0 1px var(--rule-invert); }
.btn--ghost:hover { background: rgba(190, 143, 66, 0.14); color: var(--paper); }
.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink:hover { background: var(--ink-mid); }
.btn--block { display: flex; width: 100%; }

/* ---------- 移动导航按钮 ---------- */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--brass-lt);
  box-shadow: inset 0 0 0 1px var(--rule-invert);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.nav-toggle:hover { background: rgba(190, 143, 66, 0.14); }
.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 10px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.22s var(--ease), top 0.22s var(--ease);
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after  { top: 8px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 4px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after  { top: 4px; transform: rotate(-45deg); }

/* ---------- 品牌轨道（导航） ---------- */
.rail {
  position: fixed;
  top: var(--masthead-h);
  bottom: 0;
  left: 0;
  width: min(320px, 86vw);
  z-index: 85;
  display: flex;
  flex-direction: column;
  padding: 22px 0 20px;
  background: var(--ink);
  color: var(--paper);
  border-right: 1px solid var(--rule-invert);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateX(-102%);
  visibility: hidden;
  transition: transform 0.28s var(--ease), visibility 0.28s linear;
}
.rail[data-open] { transform: none; visibility: visible; }

.rail__label {
  padding: 0 20px 12px;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--brass);
  border-bottom: 1px solid rgba(190, 143, 66, 0.22);
}
.rail__list { display: flex; flex-direction: column; }
.rail__item { display: block; }
.rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 20px;
  color: rgba(245, 242, 233, 0.78);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.rail__link:hover {
  color: var(--brass-lt);
  background: rgba(190, 143, 66, 0.08);
  border-left-color: rgba(190, 143, 66, 0.5);
}
.rail__link[aria-current="page"] {
  color: var(--paper);
  border-left-color: var(--cinnabar);
  background: linear-gradient(90deg, rgba(179, 58, 43, 0.2), rgba(179, 58, 43, 0));
}
.rail__link[aria-current="page"] .rail__num { color: var(--cinnabar); }
.rail__num {
  flex: none;
  width: 20px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--brass);
  font-variant-numeric: tabular-nums;
}
.rail__name { font-size: 14px; letter-spacing: 0.04em; }

.rail__foot {
  margin-top: auto;
  padding: 18px 20px 0;
  border-top: 1px solid rgba(190, 143, 66, 0.22);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.8;
  letter-spacing: 0.04em;
  color: rgba(245, 242, 233, 0.58);
}
.rail__foot b { color: var(--brass-lt); font-weight: 500; }
.rail__band {
  display: block;
  height: 6px;
  margin-bottom: 14px;
  background: linear-gradient(90deg, var(--brass) 0 40%, var(--cinnabar) 40% 52%, rgba(226, 198, 140, 0.35) 52% 100%);
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

@media (min-width: 901px) {
  .rail {
    width: var(--rail-w);
    z-index: 60;
    transform: none;
    visibility: visible;
    transition: none;
    padding: 26px 0 22px;
  }
}

/* ---------- 版式容器与网格 ---------- */
.wrap {
  width: 100%;
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid { display: grid; gap: clamp(18px, 2.4vw, 36px); }
.grid--12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 36px);
}
.col-main  { grid-column: 1 / span 8; min-width: 0; }
.col-aside { grid-column: 10 / span 3; min-width: 0; }
.col-wide  { grid-column: 1 / span 11; min-width: 0; }
.col-full  { grid-column: 1 / -1; min-width: 0; }

@media (max-width: 1040px) {
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-main, .col-aside, .col-wide { grid-column: 1 / -1; }
}
@media (max-width: 620px) {
  .grid--12 { grid-template-columns: 1fr; }
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gray);
  border-bottom: 1px solid var(--rule);
}
.breadcrumb a {
  color: var(--gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.breadcrumb a:hover { color: var(--ink); border-bottom-color: var(--brass); }
.breadcrumb__sep { color: var(--brass); }
.breadcrumb [aria-current="page"] { color: var(--black); }

/* ---------- 通用文本组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--brass);
}
.num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: 0.06em;
}
.lede {
  max-width: 62ch;
  font-size: clamp(17px, 1.4vw, 20px);
  line-height: 1.7;
  color: var(--gray);
}
.note {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray);
}
.tickline {
  height: 8px;
  border: 0;
  background-image: repeating-linear-gradient(90deg, var(--brass) 0 1px, transparent 1px 12px);
  opacity: 0.55;
}
.aside-note {
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--brass);
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 切角面板 ---------- */
.panel {
  --notch: 16px;
  position: relative;
  padding: clamp(18px, 2.2vw, 30px);
  background: var(--paper-2);
  color: var(--black);
  clip-path: polygon(
    0 0,
    calc(100% - var(--notch)) 0,
    100% var(--notch),
    100% 100%,
    var(--notch) 100%,
    0 calc(100% - var(--notch))
  );
}
.panel--ink { background: var(--ink); color: var(--paper); }
.panel--flat { background: transparent; box-shadow: inset 0 0 0 1px var(--rule); clip-path: none; }

/* ---------- 图片容器 ---------- */
.media {
  --media-ratio: 62%;
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: var(--ink-deep);
}
.media::before {
  content: "";
  display: block;
  padding-top: var(--media-ratio);
}
.media > img,
.media > picture,
.media > .media__inner {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.media > img,
.media > picture img,
.media > .media__inner > img {
  object-fit: cover;
}
.media > picture { display: block; }
.media--wide   { --media-ratio: 44%; }
.media--tall   { --media-ratio: 130%; }
.media--square { --media-ratio: 100%; }

.media__placeholder {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(135deg, rgba(190, 143, 66, 0.14) 0 2px, transparent 2px 12px),
    var(--ink-mid);
}
.media__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: 6px 12px;
  background: var(--brass);
  color: var(--ink-deep);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

/* ---------- 显现协议 ---------- */
[data-reveal] {
  transition: opacity 0.42s var(--ease), transform 0.42s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}
html.js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- 页脚 ---------- */
.site-foot {
  margin-top: clamp(48px, 7vw, 110px);
  background: var(--ink-deep);
  color: rgba(245, 242, 233, 0.78);
  border-top: 1px solid var(--rule-invert);
  font-size: 14px;
  line-height: 1.75;
}
.site-foot__inner {
  max-width: var(--measure);
  margin-inline: auto;
  padding: clamp(34px, 5vw, 64px) var(--gutter) clamp(24px, 3vw, 40px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
}
@media (min-width: 800px) {
  .site-foot__inner { grid-template-columns: 1.05fr 1.7fr 1.15fr; }
}

.site-foot__brand { min-width: 0; }
.site-foot__mark {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--paper);
}
.site-foot__tagline {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--brass);
}
.site-foot__legal-line {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: rgba(245, 242, 233, 0.5);
}

.site-foot__nav {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}
@media (min-width: 560px) {
  .site-foot__nav { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
}
.foot-col { min-width: 0; }
.foot-col__title {
  padding-bottom: 8px;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--brass);
  border-bottom: 1px solid rgba(190, 143, 66, 0.22);
}
.foot-col__list { display: flex; flex-direction: column; }
.foot-col__list a {
  display: inline-block;
  padding: 3px 0;
  font-size: 13.5px;
  color: rgba(245, 242, 233, 0.82);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.foot-col__list a:hover {
  color: var(--brass-lt);
  border-bottom-color: var(--brass);
}

.site-foot__contact { min-width: 0; }
.site-foot__contact p { font-size: 13.5px; }
.site-foot__note {
  margin-top: 12px;
  padding-left: 12px;
  border-left: 2px solid var(--cinnabar);
  font-size: 12.5px !important;
  line-height: 1.7;
  color: rgba(245, 242, 233, 0.6);
}

.site-foot__base {
  max-width: var(--measure);
  margin-inline: auto;
  padding: 16px var(--gutter) 26px;
  border-top: 1px solid rgba(190, 143, 66, 0.22);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 22px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(245, 242, 233, 0.55);
}
.site-foot__icp { margin: 0; }
.site-foot__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.site-foot__legal a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.site-foot__legal a:hover {
  color: var(--brass-lt);
  border-bottom-color: var(--brass);
}

/* ---------- 小屏收敛 ---------- */
@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
}
@media (min-width: 901px) {
  .nav-toggle { display: none; }
}
@media (max-width: 700px) {
  .batch-band { display: none; }
}
@media (max-width: 520px) {
  :root { --masthead-h: 52px; }
  .masthead__tagline { display: none; }
  .masthead__mark { font-size: 15px; }
  .masthead__mark::after { margin-left: 7px; }
  .masthead__tail .btn { padding: 9px 12px; font-size: 11px; letter-spacing: 0.06em; }
  .nav-toggle__label { display: none; }
}

/* ---------- 无障碍动效开关 ---------- */
@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;
  }
  html.js [data-reveal] { opacity: 1 !important; transform: none !important; }
}