/* ═══════════════════════════════════════════════════════
   郸客松 · 主题 2《共创宣言》—— 动态巨字 × 先锋编辑设计
   暖白纸 × 墨黑 × 朱印红（金少量点睛）；汉字排印即主视觉。
   所有动画初始态仅挂在与 JS 注入的 [data-anim] 之下：
   无 JS 或 prefers-reduced-motion 时页面即完整静态画面。
   ═══════════════════════════════════════════════════════ */

:root {
  --paper: #f8f6f1;      /* 近中性极浅暖白 */
  --paper-2: #fdfcf8;    /* 亮白 */
  --ink: #16130f;        /* 墨黑 */
  --ink-2: #37322a;
  --ink-soft: #655d4e;
  --red: #c53a20;        /* 朱印红 */
  --red-2: #d94a2e;
  --gold: #b08a3e;       /* 古铜金（少量点睛） */
  --line: rgba(22, 19, 15, 0.18);
  --line-strong: rgba(22, 19, 15, 0.55);
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
  --mono: ui-monospace, "SF Mono", "Menlo", "Consolas", monospace;
  --wrap: min(1120px, 90vw);
  --scroll-p: 0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  background: var(--paper);
  overflow-x: hidden;
  overflow-x: clip;
  scroll-padding-top: 84px;
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.95;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; }
::selection { background: var(--red); color: var(--paper-2); }
:focus-visible { outline: 2px dashed var(--red); outline-offset: 3px; }

.wrap { width: var(--wrap); margin-inline: auto; }

.skip-link {
  position: fixed; top: -60px; left: 16px; z-index: 100;
  padding: 10px 18px; background: var(--ink); color: var(--paper-2);
  font-size: 14px; text-decoration: none; transition: top 0.2s ease;
}
.skip-link:focus { top: 14px; }

/* ---------- 刊行进度线（reduce 下保留静态反馈） ---------- */
.press-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 80; background: rgba(22, 19, 15, 0.1); }
.press-fill {
  height: 100%; background: var(--red);
  transform-origin: left; transform: scaleX(var(--scroll-p));
}

/* ---------- 当前章节标（右下角等宽） ---------- */
.now-mark {
  position: fixed; right: 16px; bottom: 14px; z-index: 80;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.3em;
  color: var(--paper-2); background: var(--ink);
  padding: 5px 10px 5px 13px;
}

/* ---------- 刊头 ---------- */
.masthead {
  position: sticky; top: 0; z-index: 70;
  background: var(--ink); color: var(--paper-2);
  border-bottom: 3px solid var(--red);
}
.masthead-inner {
  width: var(--wrap); margin-inline: auto;
  min-height: 64px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding-block: 8px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-seal {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; flex: none;
  background: var(--red); color: var(--paper-2);
  font-family: var(--serif); font-size: 19px; border-radius: 2px;
  box-shadow: inset 0 0 0 1px rgba(251, 248, 240, 0.3);
}
.brand-text {
  font-family: var(--serif); font-size: 20px; font-weight: 700; letter-spacing: 0.12em;
  display: flex; flex-direction: column; line-height: 1.25;
}
.brand-text small { font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.3em; color: rgba(251, 248, 240, 0.62); }
.mastnav { display: flex; align-items: center; gap: clamp(14px, 2.4vw, 30px); font-size: 13.5px; }
.mastnav a { text-decoration: none; letter-spacing: 0.08em; padding-block: 8px; border-bottom: 1px solid transparent; transition: color 0.2s ease, border-color 0.2s ease; }
.mastnav a:hover { color: var(--red-2); border-color: var(--red-2); }
.mastnav a:last-child { border: 1px solid rgba(251, 248, 240, 0.4); padding: 7px 14px; }
.mastnav a:last-child:hover { border-color: var(--red-2); color: var(--red-2); }

/* ---------- 首屏：宣言巨字 ---------- */
.manifesto {
  position: relative;
  padding: clamp(56px, 9vh, 110px) 0 clamp(40px, 6vh, 70px);
}
.kicker {
  width: var(--wrap); margin-inline: auto;
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.18em;
  color: var(--ink-2);
}
.kicker .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--red); flex: none; }

.giant {
  position: relative;
  width: var(--wrap); margin-inline: auto;
  font-family: var(--sans); font-weight: 900;      /* 现代中文粗黑：本主题的主语言 */
  font-size: clamp(56px, 11vw, 172px);
  line-height: 1.1; letter-spacing: 0.01em;
  margin-top: clamp(18px, 4vh, 44px);
}
.giant .line { display: block; position: relative; width: fit-content; }  /* 两行共用同一强左边线 */
.ink-layer { position: relative; z-index: 2; display: inline-block; color: var(--ink); }
.red-layer {                                        /* 朱红套印层：入场由大错位收敛，终态与墨字对准（无长期重影） */
  position: absolute; inset: 0; z-index: 1;
  color: var(--red); opacity: 0.5; pointer-events: none;
  transform: none;
}
.giant em { font-style: normal; color: var(--red); }
.giant .full-stop { color: var(--red); }

.battlement {
  display: block;
  width: var(--wrap); margin-inline: auto;
  height: 30px; margin-top: clamp(14px, 3vh, 30px);
}
.battlement path { fill: none; stroke: var(--ink); stroke-width: 2.5; }
.battlement .battlement-red { stroke: var(--red); stroke-width: 4; opacity: 0.85; }

.manifesto-foot {
  width: var(--wrap); margin-inline: auto;
  margin-top: clamp(22px, 4.5vh, 46px);
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
  gap: clamp(22px, 3.5vw, 52px); align-items: end;
}
.stand {
  font-family: var(--sans); font-weight: 600;
  font-size: clamp(17px, 1.5vw, 21px); line-height: 2;
  color: var(--ink-2); max-width: 30em;
}
.status-line {
  font-size: 14px; letter-spacing: 0.12em; color: var(--ink-soft);
}
.status-line .sep { margin-inline: 10px; color: var(--red); }

.cta {
  margin-top: 14px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.btn-red {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px;
  background: var(--red); color: var(--paper-2);
  font-size: 15px; letter-spacing: 0.1em; text-decoration: none;
  border-radius: 0;
  box-shadow: 4px 4px 0 var(--ink);            /* 印刷硬阴影：黑红套版 */
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-red:hover { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--ink); }
.btn-outline {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 12px 20px;
  font-size: 15px; letter-spacing: 0.08em; color: var(--ink);
  text-decoration: none;
  border: 1.5px solid var(--line-strong);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.btn-outline:hover { color: var(--red); border-color: var(--red); }
.qr-note {
  margin-top: 12px;
  font-size: 14px; letter-spacing: 0.08em; color: var(--ink-soft);
}
.qr-note::before { content: "※ "; color: var(--red); }

.vertical-tag {
  position: absolute; top: clamp(60px, 10vh, 120px); right: max(3vw, 16px);
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  writing-mode: vertical-rl;
  font-family: var(--serif); font-size: 17px; letter-spacing: 0.5em; color: var(--ink-2);
}
.vertical-tag .vt-en { font-family: var(--mono); font-size: 9px; letter-spacing: 0.4em; color: var(--gold); }

.bead-strip {
  width: var(--wrap); margin-inline: auto;
  margin-top: clamp(26px, 5vh, 52px); height: 14px;
  background: radial-gradient(circle at 7px 14px, var(--ink) 6.4px, transparent 6.8px);
  background-size: 26px 14px; background-repeat: repeat-x;
  opacity: 0.8;
}
.toc-note {
  width: var(--wrap); margin-inline: auto;
  margin-top: 16px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.26em; color: var(--ink-soft);
}

/* ---------- 章通用 ---------- */
.chapter { position: relative; padding: clamp(76px, 11vh, 140px) 0 0; }
.ghost-word {
  position: absolute; top: clamp(26px, 5vh, 56px);
  font-family: var(--sans); font-weight: 900;
  font-size: clamp(120px, 15vw, 240px); line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(22, 19, 15, 0.14);
  pointer-events: none; user-select: none;
  will-change: auto;
}
.ghost-red { -webkit-text-stroke: 1.5px rgba(197, 58, 32, 0.2); right: 2vw; }
.ch-facets .ghost-word:not(.ghost-red) { left: 2vw; }
.ch-origin .ghost-word { left: 2vw; }

.chapter-tag {
  display: flex; align-items: center; gap: 16px;
  margin-bottom: clamp(26px, 5vh, 52px);
}
.no {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 42px; flex: none;
  border: 2px solid var(--ink);
  font-family: var(--mono); font-size: 17px; font-weight: 700; letter-spacing: 0.06em;
}
.tag-meta { display: flex; flex-direction: column; line-height: 1.4; }
.tag-meta strong { font-size: 15px; letter-spacing: 0.16em; }
.tag-meta small { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.3em; color: var(--gold); }

.chapter h2 {
  font-family: var(--sans); font-weight: 900;
  font-size: clamp(30px, 4.6vw, 58px); line-height: 1.34; letter-spacing: 0.01em;
}
.chapter h2 em { font-style: normal; color: var(--red); }

/* ---------- 壹 · 出发 ---------- */
.origin-cols { margin-top: clamp(24px, 4vh, 44px); display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 4fr); gap: clamp(26px, 4vw, 56px); }
.origin-cols .lead-p { font-family: var(--sans); font-weight: 600; font-size: clamp(17px, 1.5vw, 21px); line-height: 2.05; border-left: 4px solid var(--red); padding-left: 20px; }
.origin-cols p:not(.lead-p) { font-size: 16px; color: var(--ink-2); align-self: center; }
.arrow-line { margin-top: clamp(30px, 5vh, 54px); display: flex; align-items: center; gap: 0; }
.al-rod { flex: 1; height: 2px; background: var(--ink); max-width: 520px; }
.al-head { width: 0; height: 0; border-left: 12px solid var(--ink); border-top: 7px solid transparent; border-bottom: 7px solid transparent; }

/* ---------- 壹 · 出发：墨黑底编辑段（与浅底形成明确对照） ---------- */
.ch-origin { background: var(--ink); color: var(--paper-2); }
.ch-origin .tag-meta strong { color: var(--paper-2); }
.ch-origin .no { border-color: var(--paper-2); color: var(--paper-2); }
.ch-origin h2 em { color: var(--red-2); }
.ch-origin .lead-p { border-left-color: var(--red-2); color: var(--paper-2); }
.ch-origin .origin-cols p:not(.lead-p) { color: rgba(251, 248, 240, 0.75); }
.ch-origin .ghost-word { -webkit-text-stroke-color: rgba(251, 248, 240, 0.14); }
.ch-origin .al-rod { background: var(--paper-2); }
.ch-origin .al-head { border-left-color: var(--paper-2); }
.ch-origin { padding-bottom: clamp(70px, 10vh, 120px); }

/* ---------- 贰 · 切面（非均匀编辑条目） ---------- */
.ch-facets { background: var(--paper-2); border-block: 1px solid var(--line); }
.facet-list { list-style: none; margin-top: clamp(30px, 5vh, 56px); }
.facet {
  display: grid;
  grid-template-columns: minmax(64px, 110px) minmax(0, 1fr) auto;
  gap: clamp(14px, 2.6vw, 34px); align-items: start;
  padding: clamp(20px, 3.4vh, 34px) 0;
  border-top: 1px solid var(--line-strong);
}
.facet:last-of-type { border-bottom: 1px solid var(--line-strong); }
.facet-a { margin-right: clamp(0px, 8vw, 110px); }   /* 三条不同右缩进：编辑错位，非均匀卡 */
.facet-b { margin-left: clamp(0px, 10vw, 140px); }
.facet-c { margin-left: clamp(0px, 4vw, 56px); margin-right: clamp(0px, 4vw, 56px); }
.f-no { font-family: var(--mono); font-size: clamp(28px, 3.4vw, 44px); font-weight: 700; line-height: 1; color: var(--ink); }
.f-no-red { color: var(--red); }
.facet h3 { font-family: var(--sans); font-size: clamp(19px, 2vw, 25px); font-weight: 800; letter-spacing: 0.02em; }
.facet p { margin-top: 8px; font-size: 16px; color: var(--ink-2); max-width: 30em; }
.f-tag {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.18em;
  color: var(--ink-soft); white-space: nowrap;
  border-top: 2px solid var(--red); padding-top: 8px;
  justify-self: end; margin-top: 6px;
}
.facet-note { margin-top: 22px; font-size: 13px; color: var(--ink-soft); }

/* ---------- 叁 · 行动（错位组） ---------- */
.actor-group { margin-top: clamp(34px, 6vh, 64px); }
.group-a { margin-left: clamp(0px, 6vw, 90px); }
.group-b { margin-left: clamp(0px, 16vw, 230px); }
.g-label {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--sans); font-size: clamp(21px, 2.4vw, 30px); font-weight: 800;
}
.g-block {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; flex: none;
  font-family: var(--serif); font-size: 23px; color: var(--paper-2);
}
.g-ink { background: var(--ink); }
.g-red { background: var(--red); }
.g-lines { list-style: none; margin-top: 20px; border-top: 1px solid var(--line-strong); }
.g-lines li {
  display: flex; align-items: baseline; gap: 18px;
  padding: 13px 2px; border-bottom: 1px solid var(--line);
  font-size: 16px;
}
.g-lines strong { font-weight: 600; min-width: 6.5em; letter-spacing: 0.04em; }
.g-lines span { color: var(--ink-soft); font-size: 15px; }
.g-note { margin-top: 14px; font-size: 14.5px; color: var(--ink-soft); max-width: 34em; }
.actor-group .btn-outline { margin-top: 18px; }

/* ---------- 肆 · 图景 ---------- */
.ch-vision { background: var(--paper-2); border-block: 1px solid var(--line); padding-bottom: clamp(56px, 8vh, 96px); }
.v-lead { margin-top: 14px; font-size: 16px; color: var(--ink-soft); }
.v-piece { margin-top: clamp(30px, 5vh, 54px); display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 4fr); gap: clamp(22px, 3.4vw, 48px); align-items: center; }
.v-thumb a { display: block; border: 1.5px solid var(--line-strong); text-decoration: none; }
.v-thumb img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; object-position: 50% 62%; filter: saturate(0.92); transition: filter 0.25s ease; }
.v-thumb a:hover img { filter: saturate(1.05); }
.v-thumb figcaption { margin-top: 8px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; color: var(--ink-soft); }
.v-kind { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.26em; color: var(--red); }
.v-kind-line { color: var(--gold); }
.v-copy h3 { font-family: var(--sans); font-size: clamp(24px, 2.8vw, 34px); font-weight: 900; margin-block: 8px 12px; }
.v-copy p, .v-short { font-size: 16px; color: var(--ink-2); line-height: 2; }
.v-copy a { color: var(--red); border-bottom: 1px solid var(--red); text-decoration: none; }
.v-piece-note { margin-top: clamp(26px, 4vh, 40px); border-top: 1px dashed var(--line-strong); padding-top: clamp(18px, 3vh, 28px); }
.v-short { max-width: 38em; margin-top: 8px; }
.v-note { margin-top: 26px; font-size: 13px; color: var(--ink-soft); }
.v-note::before { content: "※ "; color: var(--gold); }

/* ---------- 伍 · 问答 ---------- */
.faq-list { margin-top: clamp(26px, 4vh, 46px); }
.faq-list details { border-top: 1px solid var(--line-strong); }
.faq-list details:last-child { border-bottom: 1px solid var(--line-strong); }
.faq-list summary {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 2px; cursor: pointer; list-style: none;
  font-size: 16.5px; font-weight: 600; letter-spacing: 0.02em;
}
.faq-list summary::-webkit-details-marker { display: none; }
.q-mark { font-family: var(--mono); font-size: 12px; color: var(--red); letter-spacing: 0.1em; flex: none; }
.faq-list .plus { margin-left: auto; font-size: 18px; color: var(--red); transition: transform 0.18s ease; flex: none; }
.faq-list details[open] .plus { transform: rotate(45deg); }
.faq-list details p { padding: 2px 2px 20px 44px; font-size: 15.5px; color: var(--ink-2); max-width: 40em; }

/* ---------- 陆 · 联络（黑底收束） ---------- */
.ch-contact { background: var(--ink); color: var(--paper-2); padding-bottom: clamp(64px, 9vh, 110px); }
.chapter-tag-light .tag-meta strong { color: var(--paper-2); }
.no-light { border-color: var(--paper-2); color: var(--paper-2); }
.ch-contact h2 em { color: var(--red-2); }
.ct-status { margin-top: 18px; font-size: 14px; line-height: 2; color: rgba(251, 248, 240, 0.78); max-width: 36em; }
.ct-channels { margin-top: clamp(34px, 6vh, 60px); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(18px, 3vw, 40px); }
.ct-cell {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
  min-height: 168px;
  border: 1px solid rgba(251, 248, 240, 0.3);
}
.cell-glyph { font-family: var(--serif); font-size: 34px; color: var(--red-2); }
.cell-text { font-size: 14px; letter-spacing: 0.14em; color: rgba(251, 248, 240, 0.78); text-align: center; line-height: 1.9; }
.ct-channel figcaption { margin-top: 12px; text-align: center; }
.ct-channel h3 { font-family: var(--sans); font-size: 19px; font-weight: 700; letter-spacing: 0.06em; }
.ct-channel figcaption p { font-size: 12.5px; color: rgba(251, 248, 240, 0.6); margin-top: 3px; }

/* ---------- 版尾 ---------- */
.colophon { background: var(--ink); color: var(--paper-2); border-top: 3px solid var(--red); padding-block: 30px 18px; }
.colophon-inner { display: flex; align-items: center; justify-content: space-between; gap: 22px; flex-wrap: wrap; }
.colophon-motto { font-family: var(--serif); font-size: 15px; letter-spacing: 0.18em; color: rgba(251, 248, 240, 0.72); }
.colophon-actions { display: flex; gap: 20px; font-size: 12.5px; }
.colophon-actions a { text-decoration: none; color: rgba(251, 248, 240, 0.75); }
.colophon-actions a:hover { color: var(--red-2); }
.colophon-bottom {
  display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap;
  margin-top: 22px; padding-top: 14px;
  border-top: 1px solid rgba(251, 248, 240, 0.18);
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; color: rgba(251, 248, 240, 0.5);
}

/* ---------- 动画（仅 [data-anim] 生效，由 theme.js 注入） ---------- */
[data-anim] .red-layer { animation: ink-settle 0.85s cubic-bezier(0.2, 0.66, 0.2, 1) both; }
[data-anim] .ink-layer { animation: ink-rise 0.7s cubic-bezier(0.2, 0.66, 0.2, 1) both; }
[data-anim] .kicker { animation: fade-in 0.5s ease 0s both; }
[data-anim] .stand { animation: fade-up 0.55s ease 0.42s both; }
[data-anim] .status-line,
[data-anim] .cta,
[data-anim] .qr-note { animation: fade-up 0.5s ease 0.58s both; }  /* 核心状态/入口约 1.1s 内全部可读 */
[data-anim] .battlement { animation: draw-line 0.7s ease 0.24s both; }
[data-anim] .vertical-tag { animation: fade-in 0.6s ease 0.7s both; }
[data-anim] .bead-strip { animation: fade-in 0.7s ease 0.85s both; }
[data-anim] .toc-note { animation: fade-in 0.7s ease 1s both; }
[data-anim] .kicker .dot { animation: pulse 2.4s ease-in-out 1.2s infinite; }

@keyframes ink-settle {           /* 朱红套印由大错位收敛到终态对准 */
  from { transform: translate(0.16em, -0.13em); }
  to   { transform: translate(0, 0); }
}
@keyframes ink-rise {             /* 墨字随套印对准同步立起 */
  from { opacity: 0; transform: scale(0.965); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes draw-line { from { transform: scaleX(0); transform-origin: left; } to { transform: scaleX(1); transform-origin: left; } }
@keyframes fade-up { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(197, 58, 32, 0.35); } 50% { box-shadow: 0 0 0 7px rgba(197, 58, 32, 0); } }

[data-anim] .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.65s ease, transform 0.65s cubic-bezier(0.22, 0.61, 0.21, 1); }
[data-anim] .reveal.inview { opacity: 1; transform: none; }

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .now-mark { display: none; }                       /* 章节标随滚动频繁变化，减动效下隐藏 */
  [data-slide-x] { transform: none !important; }      /* 覆盖脚本 inline 横移视差；进度线静态反馈保留 */
  [data-anim] .red-layer,
  [data-anim] .ink-layer,
  [data-anim] .kicker,
  [data-anim] .kicker .dot,
  [data-anim] .stand,
  [data-anim] .status-line,
  [data-anim] .cta,
  [data-anim] .qr-note,
  [data-anim] .battlement,
  [data-anim] .vertical-tag,
  [data-anim] .bead-strip,
  [data-anim] .toc-note { animation: none !important; }   /* 停本页全部入场/pulse 动画 */
  [data-anim] .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .btn-red, .faq-list .plus, .v-thumb img, .mastnav a { transition: none !important; }
}

/* ---------- 手机（≤ 760px）：单独规划，全部正常流 ---------- */
@media (max-width: 760px) {
  .masthead-inner { min-height: 58px; flex-wrap: wrap; row-gap: 4px; }
  .mastnav { width: 100%; justify-content: space-between; gap: 8px; font-size: 12px; overflow-x: auto; }
  .mastnav a { padding-block: 6px; white-space: nowrap; }
  .mastnav a:last-child { padding: 6px 10px; }

  .giant { font-size: 16vw; }                           /* 宽度预算：最长行「做成真的。」5 全角字 × (1+0.01字距) ≈ 81vw，任何 ≥390px 视口留真实安全余量 */
  .manifesto-foot { grid-template-columns: 1fr; gap: 18px; align-items: start; }
  .red-layer { opacity: 0.4; }
  .vertical-tag { display: none; }
  .battlement { height: 22px; }

  .ghost-word { font-size: 34vw; top: 8px; opacity: 0.8; }

  .origin-cols { grid-template-columns: 1fr; gap: 20px; }
  .facet { grid-template-columns: 44px minmax(0, 1fr); row-gap: 10px; }
  .facet-a, .facet-b, .facet-c { margin-inline: 0; }  /* 手机取消桌面错位，恢复整行阅读 */
  .f-no { font-size: 26px; }
  .f-tag { grid-column: 2; justify-self: start; white-space: normal; }
  .group-a, .group-b { margin-left: 0; }
  .g-lines li { flex-direction: column; gap: 2px; }
  .g-lines strong { min-width: 0; }
  .g-lines span { font-size: 14px; }

  .v-piece { grid-template-columns: 1fr; }
  .ct-channels { grid-template-columns: 1fr; }
  .ct-cell { min-height: 140px; flex-direction: row; gap: 18px; padding: 18px; }
  .cell-text { text-align: left; }

  .faq-list details p { padding-left: 2px; }
  .colophon-inner { flex-direction: column; align-items: flex-start; gap: 14px; }
  .colophon-bottom { flex-direction: column; gap: 4px; }
}

/* 极窄（≤ 390px）微调 */
@media (max-width: 390px) {
  .giant { font-size: 15.5vw; }                        /* 390px：5 字 × 15.5vw ≈ 78vw，安全余量约 60px */
  .btn-red { padding: 12px 20px; }
  .stand br { display: none; }
}

/* ---------- 站点入口条（共创图景归档） ---------- */
.portal-back {
  display: flex; align-items: center; gap: 10px;
  padding: 9px max(calc((100vw - var(--wrap-x, 1160px)) / 2), 18px);
  background: var(--paper-2, #fdfcf8);
  border-bottom: 1px solid var(--line, rgba(22, 19, 15, 0.18));
  font-size: 14px;
}
.portal-back a {
  color: var(--ink, #16130f); text-decoration: none;
  border: 1.5px solid var(--line-strong, rgba(22, 19, 15, 0.55));
  border-radius: 999px; padding: 4px 14px;
}
.portal-back a:hover { background: var(--red, #c53a20); border-color: var(--red, #c53a20); color: #fdfcf8; }