/* ═══════════════════════════════════════════════════════════
   J-Link 官网 · 纸墨样式
   token 取值对齐 resources/app/src/styles/jlink-tokens.scss
   移动优先，断点 900px
   ═══════════════════════════════════════════════════════════ */

:root {
  /* 纸色 */
  --page-bg: #f3efe7;
  --paper: #fffdfa;
  --paper-deep: #f7f4ef;
  --paper-edge: #e6ddd0;

  /* 墨色 */
  --ink: #171310;
  --ink-soft: #2a2520;

  /* 灰阶与线 */
  --muted: #756f68;
  --muted-soft: #9a9289;
  --line: rgba(31, 27, 22, 0.14);
  --line-soft: rgba(31, 27, 22, 0.08);

  /* 品牌 */
  --vermilion: #c8201f;
  --vermilion-deep: #a01a19;
  --gold: #a07a32;
  --on-vermilion: #fff8ec;

  /* 字体 */
  --font-serif: "Shippori Mincho", "Noto Serif JP", "STSong", serif;
  --font-sans: "Noto Sans SC", ui-sans-serif, system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: var(--ink);
  text-decoration: none;
}

a:hover {
  color: var(--vermilion);
}

img,
svg {
  max-width: 100%;
}

/* 内容容器：设计稿 1440 宽两侧 130 留白 → 内容 1180 */
.wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 18px;
}

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

.rule-ink {
  height: 1px;
  background: var(--ink);
}

/* ───────────────────────── 刊头 ───────────────────────── */

.masthead {
  background: var(--paper);
}

.masthead__top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0 11px;
}

.masthead__brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.masthead__mark {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.masthead__names {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.masthead__wordmark {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.masthead__jp {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.18em;
}

.masthead__meta {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.22em;
  color: var(--muted-soft);
  padding-bottom: 4px;
  white-space: nowrap;
}

/* 导航行：移动端不出现，桌面端独立一行 */
.masthead__nav {
  display: none;
}

/* ───────────────────────── 主视觉 ───────────────────────── */

.hero {
  padding: 34px 0 30px;
  border-bottom: 1px solid var(--line);
  background-image:
    linear-gradient(180deg, rgba(247, 244, 239, 0.985) 0 64%, rgba(247, 244, 239, 0.46) 100%),
    url("./hero.jpg");
  background-size: cover;
  background-position: center;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.28em;
  color: var(--vermilion);
  text-transform: uppercase;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: 800;
  line-height: 1.16;
  color: var(--ink);
  text-wrap: pretty;
  margin: 0;
}

.hero__jp {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.hero__rule {
  width: 36px;
  height: 2px;
  background: var(--ink);
}

.hero__lede {
  font-size: 13px;
  line-height: 1.95;
  color: var(--ink-soft);
  max-width: 520px;
  margin: 0;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}

.hero__meta {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

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

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 0;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.btn--primary {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: var(--on-vermilion);
}

.btn--primary:hover {
  background: var(--vermilion-deep);
  border-color: var(--vermilion-deep);
  color: var(--on-vermilion);
}

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

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

/* ───────────────────────── 区块骨架 ───────────────────────── */

.section {
  padding: 40px 0 42px;
  background: var(--paper);
  scroll-margin-top: 8px;
}

.section--deep {
  background: var(--paper-deep);
  border-top: 1px solid var(--line);
}

.section--paper {
  border-top: 1px solid var(--line);
}

.section__head {
  display: flex;
  align-items: baseline;
  gap: 9px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.section__num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--vermilion);
}

.section__zh {
  font-family: var(--font-serif);
  font-size: 25px;
  font-weight: 800;
  color: var(--ink);
  margin: 0;
}

.section__jp {
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--muted-soft);
  letter-spacing: 0.05em;
}

.section__aside {
  display: none;
  font-size: 13px;
  color: var(--muted);
  margin-left: auto;
}

.section__note {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.85;
  margin: 14px 0 30px;
}

/* ───────────────────────── 服务矩阵 ───────────────────────── */

.matrix {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.matrix__col {
  display: flex;
  flex-direction: column;
}

.col-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ink);
}

.col-head__kicker {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.28em;
  color: var(--vermilion);
}

.col-head__zh {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.col-head__jp {
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--muted-soft);
}

.entry {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}

.entry__no {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--muted-soft);
  width: 17px;
  flex-shrink: 0;
  padding-top: 4px;
}

.entry__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-grow: 1;
  min-width: 0;
}

.entry__head {
  display: flex;
  align-items: baseline;
  gap: 7px;
  flex-wrap: wrap;
}

.entry__zh {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.entry__jp {
  font-family: var(--font-serif);
  font-size: 11px;
  color: var(--muted-soft);
}

.entry__desc {
  font-size: 11px;
  color: var(--muted);
}

/* 筹备中的模块整体弱化 */
.entry--soon .entry__zh,
.entry--soon .entry__desc {
  color: var(--muted);
}

.entry--soon .entry__desc {
  color: var(--muted-soft);
}

.chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  padding: 2px 6px;
  background: var(--paper-deep);
  color: var(--muted-soft);
  border: 1px solid var(--line-soft);
  white-space: nowrap;
}

/* ───────────────────────── 为什么选我们 ───────────────────────── */

.reasons {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 30px;
}

.reason {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.reason__no {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.28em;
  color: var(--vermilion);
}

.reason__zh {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.4;
  margin: 0;
}

.reason__jp {
  font-family: var(--font-serif);
  font-size: 11px;
  color: var(--muted-soft);
  letter-spacing: 0.05em;
}

.reason__body {
  font-size: 12px;
  line-height: 1.95;
  color: var(--ink-soft);
  margin: 0;
}

/* ───────────────────────── 关注与下载 ───────────────────────── */

.qr-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.qr {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  text-align: center;
  padding: 18px 10px;
  background: var(--paper);
  border: 1px solid var(--line);
}

/* 主入口：移动端占满一行并转成横向卡 */
.qr--main {
  position: relative;
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  text-align: left;
  gap: 18px;
  padding: 20px 18px;
  border-color: var(--vermilion);
}

.qr__badge {
  position: absolute;
  top: -1px;
  left: -1px;
  padding: 4px 8px;
  background: var(--vermilion);
  color: var(--on-vermilion);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.2em;
}

.qr__frame {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.qr__code {
  width: 96px;
  height: 96px;
}

.qr__label {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.2em;
  color: var(--vermilion);
}

.qr__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
  min-width: 0;
}

.qr--main .qr__text {
  align-items: flex-start;
  gap: 7px;
}

.qr__names {
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
}

.qr__zh {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.qr--main .qr__zh {
  font-size: 17px;
}

.qr__jp {
  font-family: var(--font-serif);
  font-size: 10px;
  color: var(--muted-soft);
}

.qr--main .qr__jp {
  font-size: 11px;
}

.qr__desc {
  font-size: 11px;
  line-height: 1.6;
  color: var(--muted);
}

.qr--main .qr__desc {
  line-height: 1.75;
  font-size: 12px;
}

.note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}

.note__tag {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--vermilion);
  padding-top: 3px;
  flex-shrink: 0;
}

.note__text {
  font-size: 11px;
  line-height: 1.8;
  color: var(--muted);
}

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

.footer {
  background: var(--ink);
  padding: 34px 0 32px;
  scroll-margin-top: 8px;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer__names {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.footer__wordmark {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 800;
  color: var(--page-bg);
}

.footer__jp {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--muted-soft);
  letter-spacing: 0.14em;
}

.footer__tagline {
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--muted-soft);
  letter-spacing: 0.04em;
}

.footer__cols {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.footer__kicker {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.25em;
  color: var(--vermilion);
}

.footer__line {
  font-size: 11px;
  color: #b0a590;
}

.footer a.footer__line {
  color: #b0a590;
}

.footer a.footer__line:hover {
  color: var(--page-bg);
}

.footer__copy {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #6e6555;
  margin-top: 4px;
}

/* ═══════════════════════════════════════════════════════════
   桌面端 ≥ 900px
   ═══════════════════════════════════════════════════════════ */

@media (min-width: 900px) {
  body {
    font-size: 14px;
  }

  .wrap {
    padding: 0 32px;
  }

  /* ── 刊头：刊名放大 + 黑线 + 独立导航行 ── */

  .masthead__top {
    padding: 24px 0 14px;
  }

  .masthead__mark {
    width: 30px;
    height: 30px;
  }

  .masthead__names {
    gap: 10px;
  }

  .masthead__wordmark {
    font-size: 28px;
  }

  .masthead__jp {
    font-size: 16px;
    letter-spacing: 0.2em;
  }

  .masthead__meta {
    font-size: 10px;
    letter-spacing: 0.26em;
    padding-bottom: 5px;
  }

  .masthead__nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: 46px;
    border-bottom: 1px solid var(--line);
  }

  .masthead__links {
    display: flex;
    align-items: center;
    gap: 30px;
  }

  .masthead__links a {
    font-size: 13px;
    color: var(--ink-soft);
  }

  .masthead__scan {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.26em;
    color: var(--vermilion);
    white-space: nowrap;
  }

  /* ── 主视觉：横向纸色遮罩，文案压在左侧 ── */

  .hero {
    padding: 118px 0 96px;
    background-image:
      linear-gradient(90deg, rgba(247, 244, 239, 0.985) 0 40%, rgba(247, 244, 239, 0.12) 76%),
      url("./hero.jpg");
  }

  .hero__inner {
    gap: 26px;
    max-width: 596px;
  }

  .kicker {
    font-size: 10px;
    letter-spacing: 0.3em;
  }

  .hero__title {
    font-size: clamp(44px, 4.4vw, 62px);
    line-height: 1.12;
  }

  .hero__jp {
    font-size: 17px;
    letter-spacing: 0.05em;
  }

  .hero__rule {
    width: 44px;
  }

  .hero__lede {
    font-size: 14px;
    line-height: 2;
  }

  .hero__actions {
    flex-direction: row;
    align-items: center;
    gap: 14px;
    margin-top: 6px;
  }

  .btn {
    padding: 0 30px;
  }

  .hero__meta {
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--muted-soft);
  }

  /* ── 区块 ── */

  .section {
    padding: 74px 0 78px;
  }

  .section__head {
    gap: 12px;
    margin-bottom: 10px;
  }

  .section__num {
    font-size: 11px;
  }

  .section__zh {
    font-size: 34px;
  }

  .section__jp {
    font-size: 15px;
    letter-spacing: 0.06em;
  }

  .section__aside {
    display: block;
  }

  .section__note {
    font-size: 13px;
    line-height: 1.9;
    max-width: 720px;
    margin: 12px 0 46px;
  }

  /* ── 服务矩阵：双栏 ── */

  .matrix {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 56px;
  }

  .col-head {
    gap: 10px;
    padding-bottom: 12px;
  }

  .col-head__kicker {
    font-size: 10px;
    letter-spacing: 0.3em;
  }

  .col-head__zh {
    font-size: 17px;
  }

  .col-head__jp {
    font-size: 13px;
  }

  .entry {
    align-items: center;
    gap: 14px;
    padding: 15px 0;
  }

  .entry__no {
    font-size: 10px;
    width: 20px;
    padding-top: 0;
  }

  /* 描述移到行尾，标题与描述同一行 */
  .entry__body {
    flex-direction: row;
    align-items: baseline;
    gap: 14px;
  }

  .entry__head {
    flex-grow: 1;
    gap: 9px;
  }

  .entry__zh {
    font-size: 16px;
  }

  .entry__jp {
    font-size: 12px;
  }

  .entry__desc {
    font-size: 12px;
    text-align: right;
    white-space: nowrap;
  }

  .chip {
    font-size: 10px;
    padding: 3px 8px;
  }

  /* ── 为什么选我们：2×2 ── */

  .reasons {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 44px 56px;
    margin-top: 44px;
  }

  .reason {
    gap: 12px;
    padding-top: 30px;
  }

  .reason__no {
    font-size: 10px;
    letter-spacing: 0.3em;
  }

  .reason__zh {
    font-size: 23px;
    line-height: 1.35;
  }

  .reason__jp {
    font-size: 13px;
    letter-spacing: 0.06em;
  }

  .reason__body {
    font-size: 13px;
    line-height: 2;
  }

  /* ── 二维码：五列等宽 ── */

  .qr-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 24px;
    margin-top: 44px;
  }

  .qr {
    gap: 16px;
    padding: 0;
    border: none;
  }

  .qr__frame {
    width: 100%;
    aspect-ratio: 1 / 1;
    justify-content: center;
    gap: 12px;
    background: var(--paper);
    border: 1px solid var(--line);
  }

  .qr--main {
    position: relative;
    grid-column: auto;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
    padding: 0;
    border: none;
  }

  .qr--main .qr__frame {
    border-color: var(--vermilion);
  }

  .qr__code {
    width: 128px;
    height: 128px;
  }

  .qr__label {
    font-size: 9px;
    letter-spacing: 0.22em;
  }

  .qr__text {
    gap: 6px;
    align-items: center;
  }

  .qr--main .qr__text {
    align-items: center;
    gap: 6px;
  }

  .qr__names {
    gap: 8px;
  }

  .qr__zh,
  .qr--main .qr__zh {
    font-size: 16px;
  }

  .qr__jp,
  .qr--main .qr__jp {
    font-size: 12px;
  }

  .qr__desc,
  .qr--main .qr__desc {
    font-size: 12px;
    line-height: 1.7;
  }

  .note {
    align-items: center;
    gap: 10px;
    margin-top: 40px;
    padding-top: 20px;
  }

  .note__tag {
    font-size: 10px;
    padding-top: 0;
  }

  .note__text {
    font-size: 12px;
  }

  /* ── 页脚：品牌左，三栏右 ── */

  .footer {
    padding: 44px 0 40px;
  }

  .footer__inner {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    gap: 48px;
  }

  .footer__brand {
    gap: 12px;
  }

  .footer__wordmark {
    font-size: 22px;
  }

  .footer__jp {
    font-size: 14px;
    letter-spacing: 0.16em;
  }

  .footer__tagline {
    font-size: 13px;
    letter-spacing: 0.05em;
  }

  .footer__cols {
    flex-direction: row;
    gap: 64px;
  }

  .footer__col {
    gap: 9px;
  }

  .footer__kicker {
    font-size: 10px;
  }

  .footer__line {
    font-size: 12px;
  }

  .footer__copy {
    font-size: 11px;
  }
}