/* =========================================================
   Qilvenza 官网样式（WEB-01 极简重设计）
   原则：一屏一主张、三级字阶、行宽受限、深浅双主题、
   零外部依赖（系统字体、无外链字体与图标库）。
   ========================================================= */

:root {
  /* 品牌色（延续原有主色） */
  --navy: #173b63;
  --teal: #16877d;
  --gold: #c59a45;

  /* 字体 */
  --font-sans:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-display: var(--font-sans);
  --font-mono: ui-monospace, "Cascadia Code", "SF Mono", Consolas, "Microsoft YaHei", monospace;

  /* 浅色主题 */
  --bg: #f7f9fc;
  --bg-raised: #ffffff;
  --ink: #17293b;
  --ink-strong: #0f1f30;
  --ink-soft: #5b6c7c;
  --ink-faint: #8595a4;
  --line: #dde5ec;
  --accent: var(--navy);
  --accent-ink: #ffffff;
  --accent-soft: rgba(23, 59, 99, 0.08);
  --link: #1c5b8f;
  --shadow-shot:
    0 1px 2px rgba(15, 31, 48, 0.06),
    0 24px 60px -24px rgba(15, 31, 48, 0.28);
  --shadow-card: 0 1px 3px rgba(15, 31, 48, 0.08);
  --footer-bg: #0d1e31;
  --footer-ink: #b9c7d4;
  --footer-ink-strong: #f2f6fa;
  --footer-line: rgba(255, 255, 255, 0.14);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1620;
    --bg-raised: #16212e;
    --ink: #d9e2ea;
    --ink-strong: #f2f6fa;
    --ink-soft: #93a3b2;
    --ink-faint: #6d7d8c;
    --line: #263442;
    --accent: #cfe0f2;
    --accent-ink: #10233a;
    --accent-soft: rgba(207, 224, 242, 0.1);
    --link: #86b4dc;
    --shadow-shot:
      0 1px 2px rgba(0, 0, 0, 0.4),
      0 24px 60px -24px rgba(0, 0, 0, 0.6);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.35);
    --footer-bg: #0a141e;
    --footer-line: rgba(255, 255, 255, 0.1);
  }
}

/* ---------- 基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

[hidden] {
  display: none !important;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 0 0 10px 10px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 14px;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

.container {
  width: min(100% - 48px, 1080px);
  margin-inline: auto;
}

::selection {
  background: var(--accent-soft);
}

/* ---------- 字阶：仅三级 ---------- */
h1 {
  font-family: var(--font-display);
  font-size: clamp(38px, 6vw, 62px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.03em;
  color: var(--ink-strong);
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--ink-strong);
}

/* ---------- 按钮与文字链接 ---------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  transition: opacity 0.18s, transform 0.18s;
}

.button svg {
  width: 18px;
  height: 18px;
}

.button:hover {
  opacity: 0.88;
}

.button:active {
  transform: scale(0.98);
}

.button--primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.button--secondary {
  background: transparent;
  color: inherit;
  box-shadow: inset 0 0 0 1.5px currentColor;
}

.button--large {
  padding: 15px 34px;
  font-size: 17px;
}

.button--small {
  padding: 8px 18px;
  font-size: 14px;
}

.button--full {
  width: 100%;
}

.button.disabled {
  opacity: 0.45;
  pointer-events: auto;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--link);
  font-size: 16px;
  font-weight: 600;
}

.text-link svg {
  width: 15px;
  height: 15px;
}

.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s;
}

.site-header.scrolled {
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}

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

.brand-mark img {
  width: 30px;
  height: 30px;
  border-radius: 8px;
}

.brand-copy {
  display: grid;
  line-height: 1.25;
}

.brand-copy strong {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ink-strong);
}

.brand-copy small {
  font-size: 12px;
  color: var(--ink-faint);
}

.site-nav {
  display: flex;
  gap: 28px;
}

.site-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.18s;
}

.site-nav a:hover {
  color: var(--ink-strong);
}

/* ---------- 屏 1 · Hero ---------- */
.hero {
  padding: clamp(72px, 12vh, 130px) 0 clamp(56px, 8vh, 90px);
  text-align: center;
}

.hero-inner {
  max-width: 720px;
}

.hero-brand {
  margin-bottom: 18px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.hero-lead {
  max-width: 34em;
  margin: 22px auto 0;
  font-size: clamp(17px, 2vw, 19px);
  color: var(--ink-soft);
}

.hero-meta {
  margin-top: 14px;
  font-size: 14px;
  color: var(--ink-faint);
}

.hero-actions {
  margin-top: 34px;
}

.hero-figure {
  margin-top: clamp(48px, 8vh, 84px);
}

/* 截图：浏览器式圆角与投影 */
.shot {
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--bg-raised);
  box-shadow: var(--shadow-shot);
}

.shot--hero {
  max-width: 960px;
  margin-inline: auto;
}

/* ---------- 屏 2-5 · 场景 ---------- */
.scene {
  display: flex;
  align-items: center;
  min-height: min(72vh, 640px);
  padding: clamp(72px, 11vh, 120px) 0;
  border-top: 1px solid var(--line);
}

.scene-inner {
  max-width: 640px;
}

.scene--right .scene-inner {
  margin-left: auto;
  text-align: right;
}

.scene-kicker {
  margin-bottom: 16px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--teal);
}

.scene-lead {
  max-width: 30em;
  margin-top: 18px;
  font-size: clamp(17px, 2vw, 19px);
  color: var(--ink-soft);
}

.scene--right .scene-lead {
  margin-left: auto;
}

.scene--split .scene-split {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  align-items: center;
  gap: clamp(36px, 5vw, 72px);
}

.shot--scene {
  padding: clamp(16px, 3vw, 32px);
}

.shot--scene img {
  border-radius: 6px;
}

/* ---------- 屏 6 · 下载 ---------- */
.scene--download {
  min-height: min(64vh, 560px);
  text-align: center;
}

.scene--download .scene-inner {
  margin-inline: auto;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  margin-bottom: 20px;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  background: var(--accent-soft);
}

.status-pill.available {
  color: var(--teal);
  background: rgba(22, 135, 125, 0.12);
}

.status-pill.invite {
  color: var(--gold);
  background: rgba(197, 154, 69, 0.14);
}

.download-line {
  margin-top: 18px;
  font-size: 16px;
  color: var(--ink-soft);
}

.download-note {
  max-width: 32em;
  margin: 10px auto 0;
  font-size: 14px;
  color: var(--ink-faint);
}

.download-links {
  display: flex;
  justify-content: center;
  gap: 28px;
  margin-top: 26px;
}

.checksum-fold {
  max-width: 560px;
  margin: 40px auto 0;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-raised);
}

.checksum-fold summary {
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
  list-style: none;
}

.checksum-fold summary::-webkit-details-marker {
  display: none;
}

.checksum-fold summary::after {
  content: "＋";
  float: right;
  color: var(--ink-faint);
}

.checksum-fold[open] summary::after {
  content: "－";
}

.checksum-list {
  display: grid;
  gap: 12px;
  padding: 6px 20px 20px;
  border-top: 1px solid var(--line);
}

.checksum-list > div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-top: 12px;
}

.checksum-list dt {
  font-size: 13px;
  color: var(--ink-faint);
}

.checksum-list dd {
  font-size: 14px;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.checksum-list code {
  font-family: var(--font-mono);
  font-size: 13px;
}

.checksum-list .text-link {
  margin-left: 12px;
  font-size: 13px;
}

/* ---------- 屏 7 · 页脚 ---------- */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-ink);
}

.footer-inner {
  padding: clamp(64px, 10vh, 100px) 0 36px;
}

.footer-contact {
  max-width: 560px;
}

.footer-contact h2 {
  color: var(--footer-ink-strong);
}

.footer-contact > p {
  max-width: 32em;
  margin-top: 14px;
  font-size: 16px;
}

.footer-contact .button {
  margin-top: 26px;
  color: var(--footer-ink-strong);
}

.footer-channels {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 26px;
  font-size: 14px;
}

.footer-channels > span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-channels svg {
  width: 15px;
  height: 15px;
  opacity: 0.7;
}

.footer-channels img {
  display: block;
  max-width: 100%;
  border-radius: 8px;
}

/* 无任何真实渠道时的指引文案（WEB-01b：空渠道零占位） */
.footer-guide {
  margin-top: 26px;
  font-size: 15px;
  color: var(--footer-ink-strong);
}

.footer-legal {
  margin-top: 56px;
  padding-top: 26px;
  border-top: 1px solid var(--footer-line);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--footer-ink-strong);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: 22px;
  font-size: 13px;
  color: var(--footer-ink);
  color: color-mix(in srgb, var(--footer-ink) 75%, transparent);
}

.footer-compliance {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer-compliance a:hover {
  color: var(--footer-ink-strong);
}

.beian-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.beian-link img {
  width: 16px;
  height: 16px;
}

/* ---------- 弹窗 ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 24px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(9, 18, 28, 0.55);
  backdrop-filter: blur(6px);
}

.modal-dialog {
  position: relative;
  width: min(100%, 520px);
  max-height: min(88vh, 760px);
  overflow-y: auto;
  padding: 34px;
  border-radius: 20px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-shot);
  outline: none;
}

.modal-dialog--compact {
  width: min(100%, 440px);
}

body.modal-open {
  overflow: hidden;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  color: var(--ink-faint);
  background: var(--accent-soft);
}

.modal-close svg {
  width: 16px;
  height: 16px;
}

.modal-heading span {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--teal);
}

.modal-heading h2 {
  margin-top: 6px;
  font-size: 24px;
}

.modal-heading p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.modal-heading--center {
  text-align: center;
}

.download-confirm-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  border-radius: 14px;
  color: var(--accent);
  background: var(--accent-soft);
}

.download-confirm-icon svg {
  width: 26px;
  height: 26px;
}

.download-confirm-details {
  display: grid;
  gap: 10px;
  margin: 20px 0;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.download-confirm-details > div {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
}

.download-confirm-details dt {
  color: var(--ink-faint);
}

/* ---------- 表单 ---------- */
.lead-form {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.lead-form label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
}

.lead-form label span {
  color: var(--gold);
}

.lead-form input,
.lead-form select,
.lead-form textarea {
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  color: var(--ink);
  font: inherit;
  font-size: 15px;
}

.lead-form input:focus,
.lead-form select:focus,
.lead-form textarea:focus {
  outline: 2px solid var(--link);
  outline-offset: 1px;
}

.lead-form .invalid {
  border-color: #c0564f;
}

.consent {
  display: flex !important;
  grid-template-columns: none;
  align-items: flex-start;
  gap: 10px;
  font-weight: 500 !important;
}

.consent input {
  margin-top: 4px;
}

.consent a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-error {
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid rgba(192, 86, 79, 0.4);
  color: #b04a43;
  background: rgba(192, 86, 79, 0.08);
  font-size: 13px;
}

.form-footnote {
  font-size: 12px;
  color: var(--ink-faint);
  text-align: center;
}

/* 蜜罐字段：移出视口且不可聚焦，对真实用户完全不可见（WEB-01b 防爬虫） */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* 线索接口未配置时的表单区替代指引 */
.form-fallback {
  display: grid;
  justify-items: center;
  gap: 12px;
  padding: 28px 0 8px;
  text-align: center;
}

.form-fallback p {
  font-size: 15px;
  color: var(--ink-soft);
}

.form-success {
  display: grid;
  justify-items: center;
  gap: 12px;
  padding: 28px 0 8px;
  text-align: center;
}

.success-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  color: var(--teal);
  background: rgba(22, 135, 125, 0.12);
}

.success-icon svg {
  width: 24px;
  height: 24px;
}

.form-success h3 {
  font-size: 19px;
  color: var(--ink-strong);
}

.form-success p {
  font-size: 14px;
  color: var(--ink-soft);
}

.success-contacts {
  display: grid;
  gap: 8px;
  font-size: 14px;
}

.success-contacts span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.success-contacts svg {
  width: 15px;
  height: 15px;
  color: var(--ink-faint);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  z-index: 80;
  max-width: min(92vw, 480px);
  padding: 12px 20px;
  border-radius: 12px;
  background: var(--ink-strong);
  color: var(--bg);
  font-size: 14px;
  transform: translateX(-50%);
  box-shadow: var(--shadow-shot);
}

@media (prefers-color-scheme: dark) {
  .toast {
    background: var(--bg-raised);
    color: var(--ink-strong);
    border: 1px solid var(--line);
  }
}

/* ---------- Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal--delay {
  transition-delay: 0.12s;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .reveal--delay {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* =========================================================
   子页面：更新记录 / 隐私政策 / 用户协议
   ========================================================= */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--teal);
}

.subpage-body {
  min-height: 100vh;
  background: var(--bg);
}

.subpage-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(16px);
}

.subpage-header__inner {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.subpage-nav {
  display: flex;
  align-items: center;
  gap: 14px;
}

.subpage-nav a:not(.button) {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 600;
}

.subpage-main {
  padding: 64px 0 100px;
}

.subpage-hero {
  max-width: 760px;
  margin-bottom: 46px;
}

.subpage-hero h1 {
  margin-top: 14px;
}

.subpage-hero p {
  max-width: 36em;
  margin-top: 16px;
  color: var(--ink-soft);
}

.document-shell {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  align-items: start;
  gap: 28px;
}

.document-toc {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 4px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-raised);
  box-shadow: var(--shadow-card);
}

.document-toc strong {
  padding: 4px 8px 8px;
  font-size: 13px;
  color: var(--ink-strong);
}

.document-toc a {
  padding: 7px 8px;
  border-radius: 8px;
  color: var(--ink-soft);
  font-size: 13px;
}

.document-toc a:hover {
  color: var(--teal);
  background: var(--accent-soft);
}

.document-card {
  padding: clamp(28px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--bg-raised);
  box-shadow: var(--shadow-card);
}

.document-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-bottom: 26px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 13px;
}

.document-card section + section {
  margin-top: 36px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.document-card h2 {
  font-size: 24px;
}

.document-card h3 {
  margin-top: 22px;
  font-size: 17px;
  color: var(--ink-strong);
}

.document-card p,
.document-card li {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.85;
}

.document-card p {
  margin-top: 12px;
}

.document-card ul,
.document-card ol {
  display: grid;
  gap: 8px;
  margin-top: 14px;
  list-style: none;
}

.document-card ul li {
  position: relative;
  padding-left: 18px;
}

.document-card ul li::before {
  position: absolute;
  top: 12px;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  content: "";
}

.document-card ol {
  counter-reset: doc-counter;
}

.document-card ol li {
  position: relative;
  padding-left: 34px;
  counter-increment: doc-counter;
}

.document-card ol li::before {
  position: absolute;
  top: 2px;
  left: 0;
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  color: var(--teal);
  background: var(--accent-soft);
  content: counter(doc-counter);
  font-size: 11px;
  font-weight: 700;
}

.document-notice {
  margin-top: 20px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink-soft);
  background: var(--accent-soft);
  font-size: 13px;
}

.release-timeline {
  display: grid;
  gap: 18px;
}

.release-entry {
  padding: 26px 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--bg-raised);
  box-shadow: var(--shadow-card);
}

.release-entry__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.release-entry__version {
  display: flex;
  align-items: center;
  gap: 12px;
}

.release-entry__version span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 12px;
  color: var(--teal);
  background: var(--accent-soft);
}

.release-entry__version svg {
  width: 20px;
  height: 20px;
}

.release-entry h2 {
  font-size: 21px;
}

.release-entry time {
  color: var(--ink-faint);
  font-size: 13px;
}

.release-entry .status-pill {
  flex: 0 0 auto;
  margin-bottom: 0;
}

.release-entry ul {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  list-style: none;
}

.release-entry li {
  position: relative;
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 14px;
}

.release-entry li::before {
  position: absolute;
  top: 9px;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  content: "";
}

.subpage-footer {
  padding: 26px 0;
  color: var(--footer-ink);
  background: var(--footer-bg);
  font-size: 13px;
}

.subpage-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.subpage-footer a {
  color: var(--footer-ink);
}

.subpage-footer a:hover {
  color: var(--footer-ink-strong);
}

/* ---------- 响应式：移动端单列 ---------- */
@media (max-width: 860px) {
  .scene--split .scene-split {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .document-shell {
    grid-template-columns: 1fr;
  }

  .document-toc {
    position: static;
    grid-template-columns: 1fr 1fr;
  }

  .document-toc strong {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .container {
    width: min(100% - 40px, 1080px);
  }

  .scene {
    min-height: 0;
  }

  .scene--right .scene-inner {
    margin-left: 0;
    text-align: left;
  }

  .scene--right .scene-lead {
    margin-left: 0;
  }

  .scene--download .scene-inner {
    text-align: center;
  }

  .download-links {
    flex-direction: column;
    align-items: center;
    gap: 14px;
  }

  .checksum-list > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .modal {
    padding: 14px;
    align-items: end;
  }

  .modal-dialog {
    padding: 26px 22px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .subpage-nav a:not(.button) {
    display: none;
  }

  .release-entry__top {
    flex-direction: column;
  }

  .subpage-footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}