/* ============================================================
   clash-verge.us — base.css
   新粗野编辑部风(Neo-Brutalist Editorial)
   米白纸底 / 浓墨黑骨架 / 唯一强调色警示黄
   全站直角零圆角 · 2px 墨黑描边 · 6px 硬边偏移实心投影
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  --paper: #F3EFE4;            /* 页面底色 */
  --paper-lift: #FBF9F1;       /* 浮起面板 */
  --paper-dim: #EAE4D3;        /* 压暗面板/表头 */
  --ink: #131210;              /* 骨架与正文 */
  --ink-soft: #5C574A;         /* 次要文字 */
  --rule-faint: rgba(19, 18, 16, .16); /* 裸露版式网格线 */
  --flare: #FFD400;            /* 唯一强调色:下载按钮/贴纸/标题下划线 */
  --flare-deep: #D9B300;       /* 强调色深变体 */
  --ok: #1F7A3D;
  --warn: #B26A00;
  --err: #B3261E;

  --ft-disp: 'Inter', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --ft-body: 'Inter', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --ft-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

  --edge: 2px;
  --slab: 6px 6px 0 0 var(--ink);
  --slab-lift: 8px 8px 0 0 var(--ink);
  --slab-press: 3px 3px 0 0 var(--ink);

  --gutter: clamp(16px, 4vw, 40px);
  --mast-h: 64px;
  --page-max: 1180px;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ft-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: clip;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ft-disp);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: 0 0 .55em;
}

h1 { font-size: clamp(2.15rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.55rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }
h4 { font-size: 1.05rem; }

p { margin: 0 0 1em; }

a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
}

a:hover { text-decoration-color: var(--flare-deep); }

ul, ol { margin: 0 0 1.2em; padding-left: 1.4em; }

img, svg { max-width: 100%; height: auto; vertical-align: middle; }

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

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

:focus-visible {
  outline: 3px solid var(--flare-deep);
  outline-offset: 2px;
}

code, kbd {
  font-family: var(--ft-mono);
  font-size: .9em;
  background: var(--paper-dim);
  border: 1px solid var(--rule-faint);
  padding: .1em .4em;
}

pre {
  background: var(--ink);
  color: var(--paper);
  border: var(--edge) solid var(--ink);
  box-shadow: var(--slab);
  padding: 16px 18px;
  margin: 1.4em 0;
  overflow-x: auto;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: .86rem;
}

hr {
  border: none;
  border-top: var(--edge) solid var(--ink);
  margin: 2.5em 0;
}

.mono { font-family: var(--ft-mono); }

/* ---------- 版心(防贴边铁律:padding-inline 任何断点不归零) ---------- */
.wrap {
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 区块节奏(只声明纵向 padding,禁止简写覆盖版心留白) ---------- */
.sec {
  padding-top: clamp(56px, 9vw, 108px);
  padding-bottom: clamp(56px, 9vw, 108px);
}

.sec-rule { border-top: var(--edge) solid var(--ink); }

.sec-head { margin-bottom: clamp(28px, 4vw, 52px); }

.sec-kicker {
  display: block;
  font-family: var(--ft-mono);
  font-size: .74rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.sec-title {
  width: fit-content;
  box-shadow: inset 0 -0.3em 0 0 var(--flare);
}

.sec-lede {
  max-width: 46em;
  color: var(--ink-soft);
  margin-top: .6em;
}

/* ---------- 裸露版式网格线背景 ---------- */
.grid-sheet {
  background-image:
    linear-gradient(var(--rule-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--rule-faint) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: 0 0;
}

/* ---------- 不对称分栏 ---------- */
.split-57,
.split-48 {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.split-57 { grid-template-columns: 5fr 7fr; }
.split-48 { grid-template-columns: 4fr 8fr; }

.split-57 > *,
.split-48 > * { min-width: 0; }

.col-rule {
  border-left: 1px solid var(--rule-faint);
  padding-left: clamp(18px, 3vw, 40px);
}

/* ---------- 文字黄高亮 ---------- */
.hl {
  box-shadow: inset 0 -0.38em 0 0 var(--flare);
  font-weight: 700;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  border: var(--edge) solid var(--ink);
  background: var(--paper-lift);
  color: var(--ink);
  font-family: var(--ft-disp);
  font-weight: 800;
  font-size: 1rem;
  line-height: 1.2;
  padding: .8em 1.5em;
  text-decoration: none;
  box-shadow: var(--slab);
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--slab-lift);
  text-decoration: none;
}

.btn:active {
  transform: translate(3px, 3px);
  box-shadow: var(--slab-press);
}

.btn svg { flex-shrink: 0; }

.btn-flare { background: var(--flare); }
.btn-flare:hover { background: var(--flare); }
.btn-flare:active { background: var(--flare-deep); }

.btn-ink {
  background: var(--ink);
  color: var(--paper);
}

.btn-slim {
  padding: .5em 1em;
  font-size: .88rem;
  box-shadow: 4px 4px 0 0 var(--ink);
}

.btn-slim:hover { box-shadow: 6px 6px 0 0 var(--ink); }
.btn-slim:active { box-shadow: 2px 2px 0 0 var(--ink); }

/* ---------- 通用面板 / 卡片 ---------- */
.slab-panel {
  background: var(--paper-lift);
  border: var(--edge) solid var(--ink);
  box-shadow: var(--slab);
  padding: clamp(18px, 3vw, 32px);
  min-width: 0;
}

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
  gap: clamp(16px, 2.5vw, 28px);
}

.card-grid > * { min-width: 0; }

/* ---------- Hero(动态大字入场) ---------- */
.hero {
  border-bottom: var(--edge) solid var(--ink);
  padding-top: clamp(36px, 6vh, 72px);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow: hidden;
}

.hero-press {
  font-family: var(--ft-mono);
  font-size: clamp(.72rem, 1.4vw, .92rem);
  letter-spacing: .14em;
  color: var(--ink-soft);
  border-top: 1px solid var(--rule-faint);
  border-bottom: 1px solid var(--rule-faint);
  padding-top: 8px;
  padding-bottom: 8px;
  margin: 0 0 clamp(20px, 3vw, 40px);
}

/* 巨型 display 字:内容固定为 Clash-Verge(大小写照此,用户拍板) */
.hero-giant {
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  padding-inline: var(--gutter);
  font-family: var(--ft-disp);
  font-weight: 900;
  font-size: clamp(2.7rem, 13vw, 13.5rem);
  line-height: .94;
  letter-spacing: -0.045em;
  white-space: nowrap;
  user-select: none;
}

.hero-giant .giant-word { display: inline-block; }

.hero-swash {
  display: block;
  height: clamp(10px, 2.2vw, 26px);
  margin-top: clamp(8px, 1.2vw, 16px);
  background: var(--flare);
  border: var(--edge) solid var(--ink);
  transform: scaleX(0);
  transform-origin: left center;
  animation: kin-sweep .45s ease-out .7s forwards;
}

.hero-lead { margin-top: clamp(32px, 5vw, 64px); }

.hero-acts {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 1.4em;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 1.6em;
  padding: 0;
  list-style: none;
  font-family: var(--ft-mono);
  font-size: .8rem;
  color: var(--ink-soft);
}

.hero-facts li {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0;
}

.hero-facts li::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--ink);
  flex-shrink: 0;
}

/* Hero 右侧留白容器(装饰注入点,默认纯负空间) */
.hero-void { min-height: 100%; }

/* 一次性错峰入场:只动 transform/opacity,总时长 ≤1.2s */
.kin {
  opacity: 0;
  transform: translateY(26px);
  animation: kin-rise .5s cubic-bezier(.2, .7, .2, 1) forwards;
}

.kin-1 { animation-delay: .04s; }
.kin-2 { animation-delay: .16s; }
.kin-3 { animation-delay: .3s; }
.kin-4 { animation-delay: .42s; }
.kin-5 { animation-delay: .54s; }
.kin-6 { animation-delay: .66s; }

@keyframes kin-rise {
  to { opacity: 1; transform: none; }
}

@keyframes kin-sweep {
  to { transform: scaleX(1); }
}

/* ---------- 滚动淡入 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s ease, transform .6s ease;
}

.reveal.shown {
  opacity: 1;
  transform: none;
}

/* ---------- 页头(header.js 注入) ---------- */
.mast {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--paper);
  border-bottom: var(--edge) solid var(--ink);
}

.mast-in {
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
  min-height: var(--mast-h);
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
}

.mast-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  flex-shrink: 0;
}

.mast-brand img {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}

.mast-name {
  font-family: var(--ft-disp);
  font-weight: 900;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.mast-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 24px);
}

.mast-link {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: .94rem;
  padding-top: 6px;
  padding-bottom: 6px;
  white-space: nowrap;
}

.mast-link:hover {
  box-shadow: inset 0 -0.42em 0 0 var(--flare);
  text-decoration: none;
}

.mast-link.is-here {
  font-weight: 900;
  box-shadow: inset 0 -0.42em 0 0 var(--flare);
}

.mast-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.lang-box { position: relative; }

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--ft-mono);
  font-size: .8rem;
  border: var(--edge) solid var(--ink);
  background: var(--paper-lift);
  padding: 8px 12px;
  min-height: 38px;
  cursor: pointer;
}

.lang-btn:hover { background: var(--paper-dim); }

.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 156px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--paper-lift);
  border: var(--edge) solid var(--ink);
  box-shadow: var(--slab);
  display: none;
  z-index: 70;
}

.lang-box.open .lang-menu { display: block; }

.lang-menu li { margin: 0; }

.lang-menu a {
  display: block;
  padding: 10px 12px;
  font-size: .9rem;
  text-decoration: none;
  color: var(--ink);
}

.lang-menu a:hover { background: var(--paper-dim); }

.lang-menu a.now {
  background: var(--ink);
  color: var(--paper);
  font-weight: 700;
}

.mast-burger {
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  border: var(--edge) solid var(--ink);
  background: var(--paper-lift);
  cursor: pointer;
  padding: 0;
}

.mast-burger:hover { background: var(--paper-dim); }

html.nav-open { overflow: hidden; }

/* ---------- 页脚(footer.js 注入) ---------- */
.foot {
  border-top: var(--edge) solid var(--ink);
  background: var(--paper-dim);
  padding-top: clamp(44px, 6vw, 72px);
  padding-bottom: 28px;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr .8fr;
  gap: clamp(24px, 4vw, 48px);
}

.foot-grid > * { min-width: 0; }

.foot-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.05rem;
}

.foot-mark img {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.foot-note {
  margin-top: 14px;
  font-size: .88rem;
  color: var(--ink-soft);
  line-height: 1.8;
}

.foot-col h3 {
  font-family: var(--ft-mono);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 14px;
}

.foot-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.foot-col ul li { margin-bottom: 9px; }

.foot-col ul a {
  text-decoration: none;
  font-size: .92rem;
}

.foot-col ul a:hover {
  box-shadow: inset 0 -0.4em 0 0 var(--flare);
}

.foot-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.foot-tags a {
  display: inline-block;
  font-size: .78rem;
  text-decoration: none;
  border: 1px solid var(--ink);
  background: var(--paper-lift);
  padding: 5px 10px;
  color: var(--ink);
}

.foot-tags a:hover {
  background: var(--ink);
  color: var(--paper);
}

.foot-base {
  margin-top: clamp(32px, 5vw, 56px);
  padding-top: 18px;
  border-top: 1px solid var(--rule-faint);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  font-family: var(--ft-mono);
  font-size: .76rem;
  color: var(--ink-soft);
}

.foot-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.foot-legal a { color: var(--ink-soft); }

/* ---------- 正文排版(教程/文章) ---------- */
.prose { max-width: 74ch; }

.prose h2 {
  margin-top: 2.1em;
  padding-top: .9em;
  border-top: var(--edge) solid var(--ink);
}

.prose h3 { margin-top: 1.7em; }

.prose ol {
  list-style: none;
  counter-reset: prose-step;
  padding-left: 0;
}

.prose ol > li {
  counter-increment: prose-step;
  position: relative;
  padding-left: 56px;
  margin-bottom: 1.2em;
}

.prose ol > li::before {
  content: counter(prose-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--ft-mono);
  font-weight: 700;
  font-size: .78rem;
  border: var(--edge) solid var(--ink);
  background: var(--paper-lift);
  padding: 2px 8px;
}

.prose blockquote {
  margin: 1.4em 0;
  border: var(--edge) solid var(--ink);
  border-left-width: 8px;
  background: var(--paper-lift);
  padding: 14px 18px;
}

.prose blockquote p:last-child { margin-bottom: 0; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 920px) {
  .mast-burger { display: inline-flex; }

  .mast-tools { margin-left: auto; }

  .mast-nav {
    position: fixed;
    top: var(--mast-h);
    left: 0;
    right: 0;
    margin-left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper-lift);
    border-bottom: var(--edge) solid var(--ink);
    padding-top: 6px;
    padding-bottom: 14px;
    padding-inline: var(--gutter);
    max-height: calc(100dvh - var(--mast-h));
    overflow-y: auto;
    overscroll-behavior: contain;
    z-index: 65;
  }

  html.nav-open .mast-nav { display: flex; }

  .mast-link {
    display: block;
    width: 100%;
    min-height: 44px;
    padding-top: 13px;
    padding-bottom: 13px;
    font-size: 1.02rem;
    border-bottom: 1px solid var(--rule-faint);
    white-space: normal;
  }

  .mast-link.is-here,
  .mast-link:hover {
    box-shadow: inset 6px 0 0 0 var(--flare);
    padding-left: 12px;
  }
}

@media (max-width: 860px) {
  .split-57,
  .split-48 { grid-template-columns: 1fr; }

  .col-rule {
    border-left: none;
    border-top: 1px solid var(--rule-faint);
    padding-left: 0;
    padding-top: clamp(18px, 3vw, 32px);
  }
}

@media (max-width: 640px) {
  body { font-size: 15px; }

  .sec {
    padding-top: 52px;
    padding-bottom: 52px;
  }

  .hero-acts .btn {
    flex: 1 1 auto;
    min-width: 0;
  }

  .foot-grid { grid-template-columns: 1fr; }

  .foot-base { flex-direction: column; align-items: flex-start; }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .kin,
  .hero-swash {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .reveal {
    transition: none;
    opacity: 1;
    transform: none;
  }

  .btn,
  .btn:hover,
  .btn:active {
    transition: none;
    transform: none;
  }
}