/* =========================================================
   SnipDot — Paper & Instrument
   一张纸，一台仪器。结构：导航 → 首屏（标题 + 规格牌）→ 图版 01
   → 规格表 → 四张图版 → 两件小事 → 拒绝（深色）→ 快捷键
   → 语言 / 支持 → 收尾 → 页脚。

   三条规矩，改动时别破：
   1. 蓝只属于「选区」。选框、角点、尺寸徽章、章节编号、链接——
      到此为止。按钮是墨黑的，因为按钮是你的动作，不是 App 的选区。
   2. 黄（--marker）整页只出现一次，涂在首屏标题上。这是 App 里的
      高亮笔，不是装饰。
   3. 文字永远起于第 1 栏，图永远落在第 7 栏。节奏靠发丝线推进，
      不靠左右交替——那是上一版的做法。

   字体全部走系统栈，不引 webfont：ui-serif 在 macOS/iOS 上就是
   New York（Apple 自家衬线）。一个讲「不联网」的产品，官网不该
   把访客 IP 送去 Google Fonts。
   ========================================================= */

:root {
  color-scheme: light;

  /* 纸 */
  --paper:  #f3f1ec;
  --tint:   #eae7e0;
  --screen: #ffffff;
  --deep:   #14130f;

  /* 墨 */
  --ink:       #171715;
  --ink-soft:  #46443e;
  --muted:     #6e6b63;
  --rule:      rgba(23, 23, 21, .12);
  --rule-soft: rgba(23, 23, 21, .09);

  /* 深色带上的墨 */
  --on-deep:       #f3f1ec;
  --on-deep-soft:  #a8a49a;
  --on-deep-faint: #6e6b63;
  --on-deep-rule:  rgba(243, 241, 236, .16);
  --on-deep-link:  #4f9bef;

  /* 唯一的蓝 */
  --blue:      #1a62c7;  /* 纸上的蓝：链接、编号。对 --paper 5.2:1 */
  --selection: #2b7fe0;  /* App 图标里的蓝：选框、填充 */
  --marker:    #ffd84d;

  /* 场景用灰（SVG 内填充，是「屏幕」不是「纸」） */
  --g1: #f0eee9;
  --g2: #e4e1da;
  --g3: #d6d2ca;
  --g4: #b6b1a6;

  --display: ui-serif, "New York", "Iowan Old Style", "Songti SC",
             "Source Han Serif SC", Charter, Palatino, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue",
          "PingFang SC", "Hiragino Sans GB", system-ui, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, "Cascadia Mono", monospace;

  --ease: cubic-bezier(.16, 1, .3, 1);

  --edge: clamp(24px, 7.8vw, 112px);
  --maxw: 1440px;
  --gap: clamp(16px, 1.7vw, 24px);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.66;
  letter-spacing: -0.006em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--blue); text-decoration: none; }
h1, h2, h3, h4, p, figure, dl, dd { margin: 0; }
img { max-width: 100%; height: auto; display: block; }

:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--edge); }

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

code {
  font-family: var(--mono);
  font-size: .87em;
  letter-spacing: 0;
  color: var(--ink);
}

kbd {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 30px; height: 26px; padding: 0 7px;
  background: var(--screen);
  border: 1px solid rgba(23, 23, 21, .2);
  border-bottom-width: 2px;
  border-radius: 7px;
  font-family: var(--mono); font-size: 12.5px; font-weight: 500;
  color: var(--ink);
  flex: none;
}

/* 排版基元 ------------------------------------------------ */

.label {                       /* 等宽小标签：章节、图注抬头、数据 */
  font-family: var(--mono);
  font-size: 11.5px; font-weight: 600;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--muted);
}

.lead { font-size: clamp(17px, 1.5vw, 19px); line-height: 1.62; color: var(--ink-soft); }

/* 带：整幅背景 ------------------------------------------- */

.band--tint { background: var(--tint); }
.band--deep { background: var(--deep); color: var(--on-deep); }
.band--deep .label { color: var(--on-deep-soft); }
.band--deep code { color: var(--on-deep); }
.band--deep a { color: var(--on-deep-link); }

/* ── 导航 ──────────────────────────────────────────── */

.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease);
}
.nav.stuck { border-bottom-color: var(--rule); }

.nav-inner {
  max-width: var(--maxw); margin-inline: auto; padding-inline: var(--edge);
  height: 76px; display: flex; align-items: center; gap: 40px;
}
.wordmark {
  display: flex; align-items: center; gap: 10px; height: 44px;
  color: var(--ink);
  font-family: var(--display); font-size: 22px; font-weight: 500;
  letter-spacing: -0.015em;
}
.wordmark .mark { border-radius: 6px; }

.nav-links { margin-left: auto; display: flex; align-items: center; gap: clamp(16px, 2.2vw, 30px); }
.nav-links .sec {
  font-family: var(--mono); font-size: 11.5px; font-weight: 500;
  letter-spacing: .13em; text-transform: uppercase;
  color: var(--muted);
  transition: color .25s var(--ease);
}
.nav-links .sec:hover { color: var(--ink); }
.nav-links .lang {
  display: inline-flex; align-items: center; height: 44px;
  font-family: var(--mono); font-size: 11.5px; font-weight: 500;
  letter-spacing: .06em; color: var(--muted);
  transition: color .25s var(--ease);
}
.nav-links .lang:hover { color: var(--ink); }

/* ── 按钮 ──────────────────────────────────────────── */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 54px; padding: 0 30px;
  border-radius: 999px;
  font-size: 15.5px; font-weight: 500; letter-spacing: -0.008em;
  transition: background .25s var(--ease), border-color .25s var(--ease),
              color .25s var(--ease), transform .4s var(--ease);
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--ink); color: #f7f6f3; }
.btn-primary:hover { background: #2c2a26; }
.btn-line { border: 1px solid rgba(23, 23, 21, .28); color: var(--ink); height: 46px; padding: 0 24px; font-size: 15px; }
.btn-line:hover { border-color: var(--ink); }
.btn-sm { height: 38px; padding: 0 20px; font-size: 13.5px; }

.btn-text {                    /* 次级动作：等宽小字 + 一条下划线 */
  position: relative;
  display: inline-flex; align-items: center; gap: 9px;
  padding-block: 12px;         /* 撑到 44px 热区；下划线走伪元素，不会被内边距顶下去 */
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  letter-spacing: .13em; text-transform: uppercase;
  color: var(--ink);
}
.btn-text::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 8px; height: 1px;
  background: rgba(23, 23, 21, .3);
  transition: background .25s var(--ease);
}
.btn-text:hover::after { background: var(--ink); }
.btn-text svg { width: 14px; height: 14px; flex: none; transition: transform .3s var(--ease); }
.btn-text:hover svg { transform: translateX(3px); }

/* ── 首屏 ──────────────────────────────────────────── */

.hero { padding: clamp(56px, 7vw, 104px) 0 clamp(56px, 6.4vw, 92px); }
.hero-text { grid-column: 1 / span 8; display: flex; flex-direction: column; gap: clamp(20px, 2.1vw, 30px); }
.hero h1 {
  font-family: var(--display);
  font-size: clamp(42px, 6.4vw, 92px);
  font-weight: 400; line-height: .98; letter-spacing: -0.028em;
  max-width: 900px; text-wrap: balance;
}
.hero h1 .mark-text {          /* 高亮笔：整页只此一处 */
  background: linear-gradient(180deg,
    transparent 56%, var(--marker) 56%, var(--marker) 93%, transparent 93%);
  padding-inline: .04em;
}
.hero .lead { max-width: 600px; }
.hero-note { font-family: var(--mono); font-size: 11.5px; font-weight: 500; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.hero-actions { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; padding-top: 4px; }

/* 规格牌 */
.plate { grid-column: 9 / span 4; margin-top: 8px; border-top: 2px solid var(--ink); padding-top: 14px; }
.plate .label { color: var(--blue); font-size: 10.5px; display: block; margin-bottom: 12px; }
/* column-gap 会把横线切成两截，所以留白走 dt 的 padding-right */
.plate dl { display: grid; grid-template-columns: 108px 1fr; font-family: var(--mono); font-size: 12px; }
.plate dt, .plate dd { padding: 11px 0; border-top: 1px solid rgba(23, 23, 21, .1); }
.plate dt { padding-right: 12px; color: var(--muted); letter-spacing: .04em; }
.plate dd { color: var(--ink); }
.plate dl > :nth-last-child(-n + 2) { border-bottom: 1px solid rgba(23, 23, 21, .1); }

/* ── 图版 01：真截图 ───────────────────────────────── */

.figline {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  border-top: 1px solid var(--rule);
  padding: 14px 0 26px;
  font-family: var(--mono); font-size: 11px; font-weight: 500;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--muted);
}
.figline b { font-weight: 500; color: var(--blue); }

.shot { padding-bottom: clamp(60px, 7vw, 100px); display: flex; flex-direction: column; align-items: center; gap: 20px; }
.shot img {
  width: min(1120px, 100%); aspect-ratio: 16 / 9; object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 2px 4px rgba(23, 23, 21, .06), 0 30px 70px rgba(23, 23, 21, .14);
}
.shot figcaption {
  max-width: 620px; text-align: center;
  font-family: var(--mono); font-size: 12px; line-height: 1.6; letter-spacing: .02em;
  color: var(--muted);
}

/* ── 规格表 ────────────────────────────────────────── */

.ledger {
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--rule);
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: clamp(56px, 7vw, 104px);
}
.ledger > div { padding: 26px 24px; border-left: 1px solid var(--rule); display: flex; flex-direction: column; gap: 4px; }
.ledger > div:first-child { padding-left: 0; border-left: 0; }
.ledger > div:last-child { padding-right: 0; }
.ledger b {
  font-family: var(--display); font-size: clamp(34px, 4vw, 58px);
  font-weight: 300; line-height: 1; letter-spacing: -0.03em;
}
.ledger b.zero { color: var(--blue); }
.ledger span { font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }

/* ── 四张图版 ──────────────────────────────────────── */

.plates > article {
  border-top: 1px solid var(--rule);
  padding: clamp(32px, 3.4vw, 44px) 0 clamp(40px, 4.3vw, 56px);
  align-items: center;
}
.plates > article:last-child { padding-bottom: 0; }

.plate-text { grid-column: 1 / span 5; display: flex; flex-direction: column; gap: 20px; }
.plate-no { display: flex; align-items: center; gap: 14px; }
.plate-no i { width: 28px; height: 1px; background: rgba(23, 23, 21, .25); flex: none; }
.plate-no b { font-family: var(--mono); font-size: 11.5px; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; color: var(--blue); }
.plate-no span { font-family: var(--mono); font-size: 11.5px; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; color: var(--ink); }
.plate-text h2 { font-family: var(--display); font-size: clamp(28px, 3vw, 42px); font-weight: 400; line-height: 1.1; letter-spacing: -0.022em; text-wrap: balance; }
.plate-text p { color: var(--ink-soft); font-size: clamp(16px, 1.3vw, 17px); }
.plate-meta { margin-top: 8px; padding-top: 16px; border-top: 1px solid var(--rule-soft); font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; color: var(--muted); }

.plate-vis {
  grid-column: 7 / span 6;
  background: var(--screen);
  border: 1px solid var(--rule-soft);
  border-radius: 18px;
  padding: clamp(16px, 1.9vw, 26px);
  box-shadow: 0 1px 2px rgba(23, 23, 21, .04), 0 18px 44px rgba(23, 23, 21, .07);
}
.scene { width: 100%; height: auto; display: block; }

/* ── 两件小事 ──────────────────────────────────────── */

.small-things { padding: clamp(56px, 6.2vw, 88px) 0; }
.small-head { grid-column: 1 / span 7; display: flex; flex-direction: column; gap: 16px; margin-bottom: 44px; }
.small-head h2 { font-family: var(--display); font-size: clamp(30px, 3.3vw, 46px); font-weight: 400; line-height: 1.08; letter-spacing: -0.024em; }

/* 不用 nth-of-type：同级的 .small-head 也是 div，序号会整体错一位。
   交给栅格自动排流——head 占满第 1 行，两张卡自然落到第 2 行左右半。 */
.st { grid-column: span 6; display: flex; flex-direction: column; gap: 22px; }
.st-vis { background: var(--screen); border: 1px solid rgba(23, 23, 21, .08); border-radius: 16px; padding: 22px 26px; }
.st-vis svg { width: 100%; height: auto; display: block; }
.st-body { display: flex; flex-direction: column; gap: 10px; }
.st-body h3 { font-family: var(--display); font-size: 26px; font-weight: 500; letter-spacing: -0.015em; }
.st-body p { color: var(--ink-soft); font-size: 16.5px; line-height: 1.64; }

/* ── 拒绝：深色带 ──────────────────────────────────── */

.refuse { padding: clamp(64px, 7.2vw, 104px) 0 clamp(60px, 6.6vw, 96px); }
.refuse-head { grid-column: 1 / span 7; display: flex; flex-direction: column; gap: 18px; }
.refuse-head .label { display: inline-flex; align-items: center; gap: 12px; }
.refuse-head .label svg { width: 15px; height: 15px; flex: none; }
.refuse-head h2 {
  font-family: var(--display); font-size: clamp(34px, 4.1vw, 58px);
  font-weight: 300; line-height: 1.04; letter-spacing: -0.028em;
  color: var(--on-deep); text-wrap: balance;
}
.refuse-aside { grid-column: 9 / span 4; align-self: end; color: var(--on-deep-soft); font-size: 17px; line-height: 1.66; }

.refuse-list { grid-column: 1 / span 12; margin-top: 56px; }
.refuse-row {
  display: grid; grid-template-columns: 48px 300px 1fr;
  column-gap: var(--gap); align-items: start;
  border-top: 1px solid var(--on-deep-rule);
  padding: 26px 0;
}
.refuse-row:last-child { border-bottom: 1px solid var(--on-deep-rule); }
.refuse-row b { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: .1em; color: var(--on-deep-faint); }
.refuse-row h3 { font-size: 20px; font-weight: 600; letter-spacing: -0.012em; color: var(--on-deep); }
.refuse-row p { color: var(--on-deep-soft); font-size: 16.5px; line-height: 1.62; max-width: 640px; }

/* ── 快捷键 ────────────────────────────────────────── */

.shortcuts { padding: clamp(60px, 6.5vw, 92px) 0 clamp(56px, 6.2vw, 88px); }
.sc-head { grid-column: 1 / span 7; display: flex; flex-direction: column; gap: 16px; }
.sc-head h2 { font-family: var(--display); font-size: clamp(30px, 3.3vw, 46px); font-weight: 400; line-height: 1.08; letter-spacing: -0.024em; }
.sc-aside { grid-column: 9 / span 4; align-self: end; color: var(--ink-soft); font-size: 17px; line-height: 1.66; }

.sc-group { grid-column: span 4; display: flex; flex-direction: column; margin-top: 48px; }
.sc-group h4 {
  padding-bottom: 12px; margin-bottom: 6px;
  border-bottom: 2px solid var(--ink);
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  letter-spacing: .2em; text-transform: uppercase; color: var(--ink);
}
.key-row {
  display: flex; align-items: center; gap: 14px;
  padding: 11px 0; border-bottom: 1px solid var(--rule-soft);
}
.key-row span { font-size: 15.5px; color: var(--ink-soft); }

/* ── 语言 / 支持 ───────────────────────────────────── */

.tail { padding-bottom: clamp(56px, 6.2vw, 92px); }
.tail .grid { border-top: 1px solid var(--rule); padding-top: 56px; }
.tail-langs { grid-column: 1 / span 6; display: flex; flex-direction: column; gap: 18px; }
.langs {
  font-family: var(--display);
  font-size: clamp(24px, 2.4vw, 34px); font-weight: 400;
  line-height: 1.45; letter-spacing: -0.012em;
}
.langs i { font-style: normal; color: var(--muted); padding-inline: .3em; }
.tail-langs p { color: var(--ink-soft); font-size: 16.5px; line-height: 1.64; max-width: 520px; }

.tail-support {
  grid-column: 8 / span 5;
  display: flex; flex-direction: column; align-items: flex-start; gap: 18px;
  padding-left: 40px; border-left: 1px solid var(--rule);
}
.tail-support h2 { font-family: var(--display); font-size: clamp(28px, 2.9vw, 40px); font-weight: 400; line-height: 1.1; letter-spacing: -0.022em; }
.tail-support p { color: var(--ink-soft); font-size: 16.5px; line-height: 1.64; }

/* ── 收尾：页面用 App 自己的手势收尾 ───────────────── */

.closer { padding: clamp(64px, 7vw, 96px) 0; }
.closer .wrap { display: flex; justify-content: center; }
.closer-sel {
  position: relative;
  display: flex; flex-direction: column; align-items: center; gap: 26px;
  padding: clamp(40px, 4.2vw, 58px) clamp(26px, 5vw, 72px);
  border: 1.5px solid var(--selection);
  background: rgba(43, 127, 224, .038);
  border-radius: 3px;
}
.closer-sel .sel-h {
  position: absolute; width: 10px; height: 10px; border-radius: 2px;
  background: var(--screen); border: 2px solid var(--selection);
}
.sel-h.tl { left: -5px; top: -5px; }
.sel-h.tr { right: -5px; top: -5px; }
.sel-h.bl { left: -5px; bottom: -5px; }
.sel-h.br { right: -5px; bottom: -5px; }
.sel-dim {
  /* 尺寸由 motion.js 按选框真实像素填写；没有 JS 就不显示空药丸 */
  display: none;
  position: absolute; left: 0; top: -32px;
  align-items: center; height: 22px; padding: 0 11px;
  border-radius: 11px; background: var(--ink); color: #f7f6f3;
  font-family: var(--mono); font-size: 11px; letter-spacing: .04em;
  font-variant-numeric: tabular-nums;
}
.js .sel-dim { display: inline-flex; }
.closer-mark { width: 60px; height: 60px; border-radius: 14px; }
.closer h2 {
  font-family: var(--display);
  font-size: clamp(30px, 3.8vw, 54px); font-weight: 400;
  line-height: 1.08; letter-spacing: -0.026em; text-align: center;
}
.closer .hero-note { text-align: center; }

/* ── 页脚 ──────────────────────────────────────────── */

.foot { border-top: 1px solid var(--rule); background: var(--tint); }
.foot-inner {
  min-height: 88px; padding-block: 20px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 28px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em;
  color: var(--muted);
}
/* 页脚链接也给足 44px 热区——在手机上这几条是最容易点空的 */
.foot a { display: inline-flex; align-items: center; min-height: 44px; color: var(--muted); transition: color .25s var(--ease); }
.foot a:hover { color: var(--ink); }
.foot .spacer { margin-left: auto; }

/* ── 运动 ──────────────────────────────────────────── */

.js .reveal {
  opacity: 0; transform: translateY(14px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  transition-delay: calc(var(--i, 0) * 60ms);
  animation: reveal-failsafe 0s 2.5s forwards;
  will-change: opacity, transform;
}
.js .reveal.in { opacity: 1; transform: none; animation: none; }
@keyframes reveal-failsafe { to { opacity: 1; transform: none; } }

/* 场景内的微动效：选框弹出、OCR 文字逐行浮现 */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal.in .sel-box { transform-origin: 60% 40%; animation: sel-pop .9s var(--ease) both; }
  @keyframes sel-pop { from { transform: scale(.82); opacity: 0; } to { transform: scale(1); opacity: 1; } }
  .js .reveal.in .ocr-rise { animation: ocr-rise .7s var(--ease) both; }
  .js .reveal.in .ocr-rise:nth-child(1) { animation-delay: .05s; }
  .js .reveal.in .ocr-rise:nth-child(2) { animation-delay: .16s; }
  .js .reveal.in .ocr-rise:nth-child(3) { animation-delay: .27s; }
  .js .reveal.in .ocr-rise:nth-child(4) { animation-delay: .38s; }
  @keyframes ocr-rise { from { opacity: 0; transform: translateX(-6px); } to { opacity: 1; transform: none; } }

  /* 高光时刻：收尾的选框现场「框」出来 */
  .js .closer .reveal .sel-h, .js .closer .reveal .sel-dim { opacity: 0; }
  .js .closer .reveal.in .sel-h { animation: handle-pop .4s var(--ease) both; }
  .js .closer .reveal.in .sel-h.tl { animation-delay: .34s; }
  .js .closer .reveal.in .sel-h.tr { animation-delay: .40s; }
  .js .closer .reveal.in .sel-h.br { animation-delay: .46s; }
  .js .closer .reveal.in .sel-h.bl { animation-delay: .52s; }
  @keyframes handle-pop { from { opacity: 0; transform: scale(.4); } to { opacity: 1; transform: none; } }
  .js .closer .reveal.in .sel-dim { animation: dim-in .5s var(--ease) .58s both; }
  @keyframes dim-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { transform: none; transition: opacity .3s ease; transition-delay: 0s; }
}

/* ── 正文页（隐私政策） ────────────────────────────── */

/* box-sizing 是 border-box，所以要把左右留白加回去，正文净宽才是 720 */
.prose { max-width: calc(720px + var(--edge) * 2); margin-inline: auto; padding: clamp(48px, 7vw, 88px) var(--edge) clamp(56px, 7vw, 88px); }
.prose h1 { font-family: var(--display); font-size: clamp(34px, 4.4vw, 52px); font-weight: 400; letter-spacing: -0.026em; line-height: 1.06; }
.prose .updated { margin-top: 14px; font-family: var(--mono); font-size: 11.5px; font-weight: 500; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.prose h2 { margin-top: 46px; padding-top: 18px; border-top: 1px solid var(--rule); font-size: 19px; font-weight: 600; letter-spacing: -0.014em; }
.prose p { margin-top: 14px; color: var(--ink-soft); line-height: 1.7; }
.prose ul { margin-top: 14px; padding-left: 20px; color: var(--ink-soft); line-height: 1.8; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose .verify {
  margin-top: 20px; padding: 20px 22px;
  background: var(--deep); color: var(--on-deep-soft);
  border-radius: 12px;
  font-family: var(--mono); font-size: 12.5px; line-height: 1.85;
  white-space: pre-wrap; overflow-x: auto;
}
.prose .verify .c { color: var(--on-deep-faint); }
.prose .verify .g { color: #7fc99a; }

/* ── 中文：衬线走宋体，行距放宽 ────────────────────── */

html[lang="zh-CN"] {
  /* 不能用 ui-serif 打头：CJK 字形会在通用族这一步触发系统兜底（PingFang），
     根本走不到后面的 Songti SC，标题就变成黑体了。直接点名衬线face。 */
  --display: "New York", "Iowan Old Style", "Songti SC", "Source Han Serif SC",
             "Noto Serif CJK SC", Georgia, serif;
}
html[lang="zh-CN"] body { letter-spacing: .01em; line-height: 1.8; }
/* CJK 撑满字身框，.2em 那种字距是给拉丁小字母用的，中文会散架 */
html[lang="zh-CN"] .label,
html[lang="zh-CN"] .hero-note,
html[lang="zh-CN"] .figline,
html[lang="zh-CN"] .ledger span,
html[lang="zh-CN"] .sc-group h4 { letter-spacing: .08em; }
html[lang="zh-CN"] .hero h1 .mark-text {
  white-space: nowrap;         /* 「停手」不许拆到两行 */
  background: linear-gradient(180deg,
    transparent 46%, var(--marker) 46%, var(--marker) 96%, transparent 96%);
}
html[lang="zh-CN"] .hero h1 { font-weight: 600; line-height: 1.16; letter-spacing: -0.01em; font-size: clamp(38px, 5.7vw, 82px); }
html[lang="zh-CN"] .refuse-head h2,
html[lang="zh-CN"] .closer h2 { font-weight: 600; line-height: 1.22; letter-spacing: -0.006em; }
html[lang="zh-CN"] .plate-text h2,
html[lang="zh-CN"] .small-head h2,
html[lang="zh-CN"] .sc-head h2,
html[lang="zh-CN"] .tail-support h2,
html[lang="zh-CN"] .st-body h3 { font-weight: 600; line-height: 1.24; letter-spacing: -0.004em; }
html[lang="zh-CN"] .nav-links .sec { font-family: var(--sans); font-size: 14px; letter-spacing: .04em; text-transform: none; }
html[lang="zh-CN"] .btn-text { font-family: var(--sans); font-size: 15px; letter-spacing: .04em; text-transform: none; }
html[lang="zh-CN"] .refuse-row { grid-template-columns: 48px 200px 1fr; }
html[lang="zh-CN"] .plate dl { grid-template-columns: 102px 1fr; font-family: var(--sans); font-size: 13px; }
html[lang="zh-CN"] .langs { line-height: 1.5; }

/* ── 响应式 ────────────────────────────────────────── */

@media (max-width: 1080px) {
  .hero-text { grid-column: 1 / span 12; }
  .plate { grid-column: 1 / span 12; margin-top: 40px; }
  .plate dl { grid-template-columns: 132px 1fr; }
  .refuse-aside, .sc-aside { grid-column: 1 / span 12; margin-top: 18px; }
  .refuse-head, .sc-head, .small-head { grid-column: 1 / span 12; }
  .sc-group { grid-column: span 6; }
}

@media (max-width: 860px) {
  .plates > article { display: flex; flex-direction: column-reverse; gap: 28px; }
  .plate-text, .plate-vis { grid-column: auto; }
  .st { grid-column: span 12; }
  .st + .st { margin-top: 40px; }
  .tail-langs, .tail-support { grid-column: 1 / span 12; }
  .tail-support { margin-top: 40px; padding-left: 0; padding-top: 36px; border-left: 0; border-top: 1px solid var(--rule); }
  .refuse-row { grid-template-columns: 40px 1fr; row-gap: 8px; }
  .refuse-row h3 { grid-column: 2; }
  .refuse-row p { grid-column: 2; }
  html[lang="zh-CN"] .refuse-row { grid-template-columns: 40px 1fr; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .ledger { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ledger > div { padding: 18px 16px; }
  .ledger > div:nth-child(odd) { padding-left: 0; border-left: 0; }
  .ledger > div:nth-child(even) { padding-right: 0; }
  .ledger > div:nth-child(-n + 2) { border-bottom: 1px solid var(--rule); }
  .sc-group { grid-column: span 12; }
  .sc-group + .sc-group { margin-top: 32px; }
  .nav-links .sec { display: none; }
  .nav-links .btn-sm { height: 44px; }   /* 触摸屏：热区不低于 44px */
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .btn-text { justify-content: center; align-self: center; }
  .foot-inner { gap: 10px 20px; }
  .foot .spacer { margin-left: 0; flex-basis: 100%; height: 0; }
}