@charset "utf-8";

/* ==========================================================================
   石序播放器 — 企业官网版式
   骨架：双层页头 / 全幅背景图主视觉 / 下沿悬浮能力卡条 /
         选项卡产品矩阵 / 内页栏目横幅 + 左侧栏目导航
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计令牌
   -------------------------------------------------------------------------- */

:root {
  /* 品牌色：深墨绿主调 + 亮青强调 */
  --ink: #0b3d3a;
  --ink-deep: #062725;
  --ink-mid: #14544f;
  --ink-soft: #2f6b65;
  --cyan: #17b8a6;
  --cyan-dark: #0f8f81;
  --cyan-wash: #e2f4f1;

  /* 中性色：暖砂底 */
  --sand: #f5f2ec;
  --sand-deep: #e8e2d7;
  --paper: #ffffff;
  --text: #1d2926;
  --text-soft: #55635f;
  --text-faint: #7d8b87;

  /* 辅助强调：铜金，仅用于数据与徽标 */
  --brass: #b98b3c;

  --line: #d9d3c8;
  --line-soft: #ebe6dd;
  --line-dark: rgba(226, 244, 241, 0.22);

  /* 版心 */
  --shell-max: 1200px;
  --shell-pad: 1.5rem;

  /* 造型 */
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 8px rgba(11, 61, 58, 0.07);
  --shadow: 0 10px 28px rgba(11, 61, 58, 0.1);
  --shadow-lg: 0 22px 56px rgba(11, 61, 58, 0.16);

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-num: "SF Mono", "DIN Alternate", Menlo, Consolas, monospace;

  /* 节奏 */
  --section-gap: 4rem;
  --header-h: 60px;
}

@media (min-width: 900px) {
  :root {
    --shell-pad: 2rem;
    --section-gap: 6rem;
    --header-h: 72px;
  }
}

/* --------------------------------------------------------------------------
   2. 基础重置
   -------------------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  /* 锚点定位避开双层吸顶导航，正文和原生页内链接保持不变。 */
  scroll-padding-top: calc(var(--header-h) + 44px + 1rem);
}

body {
  margin: 0;
  background: var(--sand);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  overflow-wrap: break-word;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(1.75rem, 4.4vw, 2.6rem);
}

h2 {
  font-size: clamp(1.4rem, 3vw, 1.95rem);
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.28rem);
}

h4 {
  font-size: 1.02rem;
}

p {
  margin: 0 0 1.1em;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--ink-mid);
  text-decoration: none;
  transition: color 0.18s ease;
}

a:hover {
  color: var(--cyan-dark);
}

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

ul,
ol {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2rem 0;
}

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

/* --------------------------------------------------------------------------
   3. 版心与通用件
   -------------------------------------------------------------------------- */

.shell {
  width: min(var(--shell-max), 100% - var(--shell-pad) * 2);
  margin-inline: auto;
}

.eyebrow {
  margin: 0 0 0.6rem;
  color: var(--cyan-dark);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section-head {
  max-width: 46rem;
  margin-bottom: 2.4rem;
}

.section-head p {
  margin-bottom: 0;
  color: var(--text-soft);
}

.section-head h2 {
  margin-bottom: 0.7rem;
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.lede {
  font-size: 1.06rem;
  color: var(--text-soft);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100%;
  z-index: 200;
  padding: 0.85rem 1.4rem;
  background: var(--ink);
  color: var(--paper);
  border-radius: 0 0 var(--radius) var(--radius);
  font-weight: 600;
  transition: top 0.18s ease;
}

.skip-link:focus {
  top: 0;
  color: var(--paper);
}

/* 按钮 --------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 46px;
  padding: 0.7rem 1.5rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 0.96rem;
  font-weight: 600;
  text-align: center;
  transition: background-color 0.18s ease, color 0.18s ease,
    border-color 0.18s ease, transform 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--solid {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-deep);
}

.btn--solid:hover {
  background: #1fd0bb;
  border-color: #1fd0bb;
  color: var(--ink-deep);
}

.btn--outline {
  border-color: currentColor;
  color: var(--ink);
}

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

.btn--onDark {
  border-color: rgba(226, 244, 241, 0.5);
  color: var(--paper);
}

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

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

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

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* 文字链接（带箭头） -------------------------------------------------------- */

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 44px;
  color: var(--cyan-dark);
  font-weight: 600;
}

.arrow-link::after {
  content: "→";
  transition: transform 0.18s ease;
}

.arrow-link:hover::after {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   4. 双层页头
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--paper);
  box-shadow: 0 1px 0 var(--line-soft);
}

/* 4.1 顶层：功能条 */

.utility-bar {
  background: var(--ink-deep);
  color: rgba(226, 244, 241, 0.78);
  font-size: 0.82rem;
}

.utility-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 44px;
}

.utility-bar__note {
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.utility-bar__links {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

.utility-bar__links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: 0.6rem;
  color: rgba(226, 244, 241, 0.78);
}

.utility-bar__links a:hover {
  color: var(--paper);
}

.utility-bar__sep {
  width: 1px;
  height: 12px;
  background: var(--line-dark);
}

@media (max-width: 639px) {
  .utility-bar__note {
    display: none;
  }

  .utility-bar__inner {
    justify-content: center;
  }
}

/* 4.2 底层：主导航条 */

.masthead__inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-height: 44px;
  margin-right: auto;
  color: var(--ink);
}

.brand__mark {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-size: 1.14rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand__tag {
  color: var(--text-faint);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

/* 主导航 */

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.nav-item {
  position: relative;
}

.nav-item__row {
  display: flex;
  align-items: center;
}

.nav-item__row > a,
.primary-nav__list > .nav-item > a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: 0.85rem;
  color: var(--text);
  font-size: 0.97rem;
  font-weight: 600;
  white-space: nowrap;
}

.nav-item__row > a:hover,
.primary-nav__list > .nav-item > a:hover {
  color: var(--cyan-dark);
}

.primary-nav a:is([aria-current="page"], [data-nav-active="true"]) {
  color: var(--ink);
  box-shadow: inset 0 -3px 0 var(--cyan);
}

.nav-toggle {
  display: none;
}

.nav-submenu {
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  min-width: 12rem;
  padding: 0.5rem;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}

.nav-item--has-children:hover .nav-submenu,
.nav-item--has-children:focus-within .nav-submenu,
.nav-item--open .nav-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Escape 后关闭整个子菜单，包括键盘焦点与悬停命中区。 */
.nav-item--has-children[data-submenu-state="closed"] .nav-submenu { display: none !important; }

.nav-submenu a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding-inline: 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.93rem;
}

.nav-submenu a:hover {
  background: var(--cyan-wash);
  color: var(--ink);
}

/* 页头行动按钮与抽屉按钮 */

.masthead__cta {
  flex-shrink: 0;
}

.drawer-button {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-direction: column;
  width: 46px;
  height: 46px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.drawer-button span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

[data-drawer-open="true"] .drawer-button span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

[data-drawer-open="true"] .drawer-button span:nth-child(2) {
  opacity: 0;
}

[data-drawer-open="true"] .drawer-button span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 4.3 移动端：导航折叠为抽屉 */

@media (max-width: 1023px) {
  .drawer-button {
    display: inline-flex;
  }

  .masthead__cta {
    display: none;
  }

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: calc(100vh - var(--header-h) - 44px);
    padding: 0 var(--shell-pad) 1rem;
    background: var(--paper);
    border-top: 1px solid var(--line-soft);
    box-shadow: var(--shadow);
    overflow-y: auto;
    display: none;
  }

  [data-drawer-open="true"] .primary-nav {
    display: block;
  }

  .primary-nav__list {
    display: block;
  }

  .nav-item {
    border-bottom: 1px solid var(--line-soft);
  }

  .nav-item__row {
    justify-content: space-between;
  }

  .nav-item__row > a,
  .primary-nav__list > .nav-item > a {
    flex: 1;
    min-height: 52px;
    padding-inline: 0;
    font-size: 1.02rem;
  }

  .primary-nav a:is([aria-current="page"], [data-nav-active="true"]) {
    box-shadow: none;
    color: var(--cyan-dark);
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    background: transparent;
    border: 0;
    color: var(--text-soft);
    font-size: 0.8rem;
  }

  .nav-toggle span {
    display: block;
    transition: transform 0.2s ease;
  }

  .nav-item--open .nav-toggle span {
    transform: rotate(180deg);
  }

  .nav-submenu {
    position: static;
    min-width: 0;
    padding: 0 0 0.6rem 0.9rem;
    border: 0;
    border-left: 2px solid var(--cyan-wash);
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: none;
    display: none;
  }

  .nav-item--open .nav-submenu {
    display: block;
  }

  .nav-item--has-children:hover .nav-submenu {
    display: none;
  }

  .nav-item--has-children.nav-item--open:hover .nav-submenu {
    display: block;
  }

  .primary-nav__drawer-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    padding-top: 1rem;
  }

  .primary-nav__drawer-actions .btn {
    flex: 1 1 8rem;
  }
}

@media (min-width: 1024px) {
  .primary-nav__drawer-actions {
    display: none;
  }
}

/* 1024–1199：七项主导航加品牌与按钮同排，收紧间距避免换行 */
@media (min-width: 1024px) and (max-width: 1199px) {
  .brand__tag {
    display: none;
  }

  .nav-item__row > a,
  .primary-nav__list > .nav-item > a {
    padding-inline: 0.5rem;
    font-size: 0.92rem;
  }

  .masthead__cta {
    padding-inline: 1rem;
    font-size: 0.9rem;
  }
}

/* --------------------------------------------------------------------------
   5. 首页 · 全幅背景图主视觉
   -------------------------------------------------------------------------- */

.hero-billboard {
  position: relative;
  display: flex;
  align-items: center;
  min-height: clamp(420px, 62vh, 560px);
  padding-block: 4rem 5.5rem;
  overflow: hidden;
  isolation: isolate;
}

.hero-billboard__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-billboard__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 62% center;
}

/* 墨绿遮罩：把蓝紫底片统一到品牌色 */
.hero-billboard__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  /* 暗区必须盖住整条文案列，否则标题会压在底图亮部上。
     文案列右缘 = 窄屏 672px / 宽屏 50%+40px，因此色标用 max() 同时跟住两种情况，
     不能用固定百分比——百分比在 900-1280px 区间会提前衰减。 */
  background: linear-gradient(
      100deg,
      rgba(6, 39, 37, 0.95) 0,
      rgba(6, 39, 37, 0.93) max(720px, calc(50% + 90px)),
      rgba(9, 52, 49, 0.45) max(1000px, calc(50% + 360px)),
      rgba(11, 61, 58, 0.12) 100%
    ),
    linear-gradient(to top, rgba(6, 39, 37, 0.62), transparent 42%);
}

/* 移动端文字压在图上，需要更强的底色保证对比度 */
@media (max-width: 899px) {
  .hero-billboard__scrim {
    background: linear-gradient(
        180deg,
        rgba(6, 39, 37, 0.9) 0%,
        rgba(6, 39, 37, 0.82) 55%,
        rgba(9, 52, 49, 0.72) 100%
      ),
      linear-gradient(to top, rgba(6, 39, 37, 0.5), transparent 40%);
  }
}

.hero-billboard__inner {
  position: relative;
  color: var(--paper);
}

/* 容器保持版心宽度以便与页头、能力卡左对齐；
   只约束子元素的行宽，不要在容器上加 max-width——
   .shell 的 margin-inline:auto 会把窄容器整体居中，导致文案偏离版心。 */
.hero-billboard__inner > * {
  max-width: 40rem;
}

.hero-billboard__eyebrow {
  display: inline-block;
  margin: 0 0 1rem;
  padding: 0.35rem 0.85rem;
  background: rgba(23, 184, 166, 0.16);
  border: 1px solid rgba(23, 184, 166, 0.42);
  border-radius: 999px;
  color: #6fe4d5;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.hero-billboard h1 {
  margin-bottom: 1rem;
  color: var(--paper);
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1.24;
}

.hero-billboard h1 em {
  color: var(--cyan);
  font-style: normal;
}

.hero-billboard__lede {
  margin-bottom: 1.8rem;
  /* 不用半透明：叠在底图上会实打实拉低对比度 */
  color: #e6f3f0;
  font-size: 1.05rem;
}

/* 5.1 下沿悬浮能力卡条 */

.capability-rail {
  position: relative;
  z-index: 2;
}

.capability-rail__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.capability-card {
  display: block;
  padding: 1.4rem 1.5rem;
  background: var(--paper);
  transition: background-color 0.18s ease;
}

.capability-card:hover {
  background: var(--cyan-wash);
}

.capability-card__index {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.5rem;
  color: var(--cyan-dark);
  font-family: var(--font-num);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
}

.capability-card__icon {
  width: 20px;
  height: 20px;
  color: var(--cyan-dark);
}

.capability-card h2 {
  margin-bottom: 0.35rem;
  font-size: 1.06rem;
}

.capability-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.9rem;
  line-height: 1.65;
}

@media (min-width: 640px) {
  .capability-rail__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .capability-rail {
    margin-top: -4.5rem;
  }

  .capability-rail__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* --------------------------------------------------------------------------
   6. 通用板块外壳
   -------------------------------------------------------------------------- */

.band {
  padding-block: var(--section-gap);
}

.band--tight {
  padding-block: calc(var(--section-gap) * 0.7);
}

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

.band--ink {
  background: var(--ink);
  color: rgba(238, 248, 246, 0.82);
}

.band--ink h2,
.band--ink h3 {
  color: var(--paper);
}

.band--ink .section-head p,
.band--ink .lede {
  color: rgba(238, 248, 246, 0.78);
}

.band--ink .eyebrow {
  color: var(--cyan);
}

/* --------------------------------------------------------------------------
   7. 首页 · 选项卡产品矩阵
   -------------------------------------------------------------------------- */

.matrix-tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
}

.matrix-tab {
  min-height: 46px;
  padding: 0.55rem 1.2rem;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 0.95rem;
  font-weight: 600;
  transition: background-color 0.18s ease, color 0.18s ease,
    border-color 0.18s ease;
}

.matrix-tab:hover {
  border-color: var(--cyan);
  color: var(--ink);
}

.matrix-tab[aria-selected="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.matrix-panel + .matrix-panel {
  margin-top: 2.5rem;
}

/* JS 接管后，未选中面板由 hidden 属性隐藏；无 JS 时全部可见 */
.matrix-panel[hidden] {
  display: none;
}

.matrix-panel__note {
  margin-bottom: 1.5rem;
  color: var(--text-soft);
}

.matrix-panel__legend {
  margin-bottom: 0.9rem;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
}

/* 产品卡片 ---------------------------------------------------------------- */

.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .product-grid--duo {
    grid-template-columns: repeat(2, 1fr);
  }
}

.product-card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease,
    border-color 0.2s ease;
}

.product-card:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
  box-shadow: var(--shadow);
}

.product-card__figure {
  position: relative;
  aspect-ratio: 3 / 2;
  background: var(--ink-deep);
  overflow: hidden;
}

.product-card__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-card__kind {
  position: absolute;
  left: 0.85rem;
  top: 0.85rem;
  padding: 0.2rem 0.6rem;
  background: rgba(6, 39, 37, 0.82);
  border-radius: var(--radius-sm);
  color: #6fe4d5;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.product-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.3rem 1.4rem 1.4rem;
}

.product-card:not(:has(> .product-card__figure)) .product-card__body {
  padding-top: 3.9rem;
}

.product-card__body h3 {
  margin-bottom: 0.5rem;
}

.product-card__body h3 a {
  color: var(--ink);
}

.product-card__body h3 a:hover {
  color: var(--cyan-dark);
}

.product-card__body p {
  flex: 1;
  color: var(--text-soft);
  font-size: 0.93rem;
}

.product-card__foot {
  margin-top: 0.6rem;
}

/* --------------------------------------------------------------------------
   8. 首页 · 能力条 / 关于摘要 / 下载 / 资讯 / 联系
   -------------------------------------------------------------------------- */

/* 8.1 核心能力 */

.strength-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
}

@media (min-width: 640px) {
  .strength-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .strength-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.strength-item {
  padding-top: 1.2rem;
  border-top: 2px solid var(--cyan);
}

.strength-item h3 {
  margin-bottom: 0.5rem;
  color: var(--paper);
}

.strength-item p {
  margin: 0;
  font-size: 0.93rem;
}

/* 8.2 关于摘要：左图右文 */

.profile-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .profile-layout {
    grid-template-columns: 5fr 6fr;
    gap: 3.5rem;
  }
}

.profile-figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.profile-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.profile-body h2 {
  margin-bottom: 1rem;
}

.profile-points {
  display: grid;
  gap: 1rem;
  margin: 1.6rem 0;
}

.profile-points li {
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-soft);
  font-size: 0.96rem;
}

.profile-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--cyan);
}

.profile-points strong {
  display: block;
  color: var(--ink);
}

/* 8.3 下载引导 */

.acquire-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .acquire-layout {
    grid-template-columns: 6fr 5fr;
    gap: 3.5rem;
  }

  .acquire-layout .acquire-figure {
    order: 2;
  }
}

.acquire-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.acquire-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.fact-list {
  display: grid;
  gap: 0;
  margin: 1.6rem 0;
  border-top: 1px solid var(--line);
}

.fact-list div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line);
}

.fact-list dt {
  min-width: 7rem;
  color: var(--text-faint);
  font-size: 0.88rem;
}

.fact-list dd {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  font-size: 0.94rem;
}

.band--ink .fact-list {
  border-color: var(--line-dark);
}

.band--ink .fact-list div {
  border-color: var(--line-dark);
}

.band--ink .fact-list dt {
  color: rgba(238, 248, 246, 0.6);
}

.band--ink .fact-list dd {
  color: var(--paper);
}

/* 8.4 资讯卡片 */

.journal-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .journal-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .journal-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.journal-card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.journal-card:hover {
  border-color: var(--cyan);
  box-shadow: var(--shadow-sm);
}

.journal-card__figure {
  aspect-ratio: 16 / 9;
  background: var(--ink-deep);
  overflow: hidden;
}

.journal-card__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.journal-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.2rem 1.3rem 1.3rem;
}

.journal-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.9rem;
  margin-bottom: 0.6rem;
  color: var(--text-faint);
  font-size: 0.82rem;
}

.journal-card__meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.journal-card__body h3 {
  margin-bottom: 0.5rem;
  font-size: 1.06rem;
}

.journal-card__body h3 a {
  color: var(--ink);
}

.journal-card__body h3 a:hover {
  color: var(--cyan-dark);
}

.journal-card__body p {
  flex: 1;
  margin-bottom: 0.7rem;
  color: var(--text-soft);
  font-size: 0.91rem;
}

/* 8.5 联系入口 */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.contact-card {
  padding: 1.5rem;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
}

.contact-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.contact-card p {
  color: var(--text-soft);
  font-size: 0.93rem;
}

.contact-card__value {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--cyan-dark);
  font-weight: 700;
  word-break: break-all;
}

/* --------------------------------------------------------------------------
   9. 内页 · 栏目横幅
   -------------------------------------------------------------------------- */

.page-banner {
  padding-block: 2.2rem 2.4rem;
  background: var(--ink);
  color: rgba(238, 248, 246, 0.82);
}

.page-banner h1 {
  margin-bottom: 0.7rem;
  color: var(--paper);
}

.page-banner__lede {
  max-width: 44rem;
  margin: 0;
  color: rgba(238, 248, 246, 0.8);
}

.page-banner__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.5rem;
  margin-top: 1.6rem;
  padding-top: 1.3rem;
  border-top: 1px solid var(--line-dark);
}

.page-banner__stats div {
  min-width: 6rem;
}

.page-banner__stats dt {
  color: rgba(238, 248, 246, 0.6);
  font-size: 0.82rem;
}

.page-banner__stats dd {
  margin: 0.15rem 0 0;
  color: var(--cyan);
  font-family: var(--font-num);
  font-size: 1.3rem;
  font-weight: 700;
}

/* 面包屑 ------------------------------------------------------------------ */

.breadcrumbs {
  margin-bottom: 1.1rem;
  font-size: 0.86rem;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.breadcrumbs li + li::before {
  content: "/";
  color: rgba(238, 248, 246, 0.4);
}

.breadcrumbs a {
  color: rgba(238, 248, 246, 0.75);
}

.breadcrumbs a:hover {
  color: var(--paper);
}

.breadcrumbs [aria-current="page"] {
  color: var(--cyan);
}

/* --------------------------------------------------------------------------
   10. 内页 · 左侧栏目导航 + 右侧正文
   -------------------------------------------------------------------------- */

.inner-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-block: 2.5rem var(--section-gap);
  align-items: start;
}

@media (min-width: 900px) {
  .inner-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 3rem;
  }
}

@media (min-width: 1200px) {
  .inner-layout {
    grid-template-columns: 260px minmax(0, 1fr);
  }
}

.section-nav {
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

@media (min-width: 900px) {
  .section-nav {
    position: sticky;
    top: calc(var(--header-h) + 44px + 1.5rem);
  }
}

.section-nav__title {
  padding: 0.9rem 1.2rem;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.95rem;
  font-weight: 700;
}

.section-nav__list {
  padding: 0.5rem;
}

.section-nav__list a {
  display: flex;
  align-items: center;
  min-height: 46px;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.94rem;
}

.section-nav__list a:hover {
  background: var(--cyan-wash);
  color: var(--ink);
}

.section-nav__list a[aria-current="page"] {
  background: var(--cyan-wash);
  color: var(--ink);
  font-weight: 700;
  box-shadow: inset 3px 0 0 var(--cyan);
}

.section-nav__aside {
  padding: 1.1rem 1.2rem 1.3rem;
  border-top: 1px solid var(--line-soft);
  background: var(--sand);
}

.section-nav__aside h3 {
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
}

.section-nav__aside p {
  margin-bottom: 0.7rem;
  color: var(--text-soft);
  font-size: 0.87rem;
  line-height: 1.6;
}

.inner-main > * + * {
  margin-top: 2.6rem;
}

/* 正文排版 ---------------------------------------------------------------- */

.prose h2 {
  margin: 2.2rem 0 0.9rem;
  padding-left: 0.85rem;
  border-left: 4px solid var(--cyan);
  font-size: clamp(1.2rem, 2.4vw, 1.45rem);
}

.prose h2:first-child {
  margin-top: 0;
}

.prose h3 {
  margin: 1.6rem 0 0.6rem;
  font-size: 1.08rem;
}

.prose p {
  color: var(--text-soft);
}

.prose ul,
.prose ol {
  margin: 0 0 1.1em;
  padding-left: 1.3rem;
}

.prose li {
  margin-bottom: 0.5rem;
  color: var(--text-soft);
  list-style: disc;
}

.prose ol > li {
  list-style: decimal;
}

.prose strong {
  color: var(--ink);
}

.prose blockquote {
  margin: 1.5rem 0;
  padding: 1.1rem 1.3rem;
  background: var(--cyan-wash);
  border-radius: var(--radius);
  color: var(--ink-mid);
}

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

.panel {
  padding: 1.6rem;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
}

@media (min-width: 640px) {
  .panel {
    padding: 2rem 2.2rem;
  }
}

/* --------------------------------------------------------------------------
   11. 产品详情
   -------------------------------------------------------------------------- */

.detail-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
  align-items: start;
}

@media (min-width: 768px) {
  .detail-hero {
    grid-template-columns: 5fr 4fr;
    gap: 2.4rem;
  }
}

.detail-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-deep);
}

.detail-figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.detail-figure figcaption {
  padding: 0.7rem 1rem;
  color: rgba(238, 248, 246, 0.7);
  font-size: 0.84rem;
}

.detail-summary h2 {
  margin-bottom: 0.8rem;
}

.detail-summary p {
  color: var(--text-soft);
}

/* 适用人群 */

.audience-list {
  display: grid;
  gap: 0;
  margin-top: 1.4rem;
  border-top: 1px solid var(--line);
}

.audience-list div {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
}

.audience-list dt {
  margin-bottom: 0.2rem;
  color: var(--ink);
  font-weight: 700;
  font-size: 0.95rem;
}

.audience-list dd {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.91rem;
  line-height: 1.65;
}

/* 使用流程 */

.step-flow {
  counter-reset: step;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
}

@media (min-width: 768px) {
  .step-flow {
    grid-template-columns: repeat(2, 1fr);
  }
}

.step-flow li {
  counter-increment: step;
  position: relative;
  padding: 1.3rem 1.4rem 1.3rem 3.4rem;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.step-flow li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 1.3rem;
  top: 1.3rem;
  color: var(--cyan-dark);
  font-family: var(--font-num);
  font-size: 0.9rem;
  font-weight: 700;
}

.step-flow h3 {
  margin-bottom: 0.35rem;
  font-size: 1rem;
}

.step-flow p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.9rem;
  line-height: 1.65;
}

/* 相关内容 / 上下篇 */

.related-rail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .related-rail {
    grid-template-columns: repeat(2, 1fr);
  }
}

.related-rail a {
  display: block;
  padding: 1.1rem 1.3rem;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: border-color 0.18s ease;
}

.related-rail a:hover {
  border-color: var(--cyan);
}

.related-rail span {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--text-faint);
  font-size: 0.8rem;
}

.related-rail strong {
  color: var(--ink);
  font-size: 0.98rem;
}

/* --------------------------------------------------------------------------
   12. 栏目列表 / 分页
   -------------------------------------------------------------------------- */

/* 空状态 */

.empty-state {
  padding: 2.5rem 1.5rem;
  background: var(--paper);
  border: 1px dashed var(--line);
  border-radius: var(--radius-lg);
  text-align: center;
}

.empty-state h3 {
  margin-bottom: 0.5rem;
}

.empty-state p {
  max-width: 32rem;
  margin-inline: auto;
  color: var(--text-soft);
}

/* 分页 */

.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin-top: 2.2rem;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding-inline: 0.7rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 600;
}

.pagination a:hover {
  border-color: var(--cyan);
  color: var(--cyan-dark);
}

.pagination [aria-current="page"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.pagination .is-disabled {
  color: var(--text-faint);
  background: var(--sand-deep);
  border-color: var(--line);
}

/* --------------------------------------------------------------------------
   13. 资讯详情
   -------------------------------------------------------------------------- */

.article-head {
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--line);
}

.article-head h1 {
  margin-bottom: 0.8rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  color: var(--text-faint);
  font-size: 0.88rem;
}

.article-figure {
  margin: 1.8rem 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.article-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.article-figure figcaption {
  padding: 0.6rem 0.2rem 0;
  color: var(--text-faint);
  font-size: 0.84rem;
}

/* --------------------------------------------------------------------------
   14. 常见问题
   -------------------------------------------------------------------------- */

.faq-group + .faq-group {
  margin-top: 2.4rem;
}

.faq-group__title .icon {
  color: var(--cyan-dark);
}

.faq-group__title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--cyan);
  font-size: 1.15rem;
}

.faq-item {
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.faq-item + .faq-item {
  margin-top: 0.7rem;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  min-height: 52px;
  padding: 0.9rem 1.2rem;
  background: transparent;
  border: 0;
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  line-height: 1.5;
}

.faq-question:hover {
  color: var(--cyan-dark);
}

.faq-question__mark {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--cyan-dark);
  font-size: 0.95rem;
  line-height: 1;
}

.faq-answer {
  padding: 0 1.2rem 1.1rem;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-answer[hidden] {
  display: none;
}

/* --------------------------------------------------------------------------
   15. 联系 / 下载 辅助件
   -------------------------------------------------------------------------- */

.scene-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
}

@media (min-width: 768px) {
  .scene-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.scene-item {
  padding: 1.4rem 1.5rem;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
}

.scene-item h3 {
  margin-bottom: 0.4rem;
  font-size: 1.02rem;
}

.scene-item p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.platform-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
}

@media (min-width: 640px) {
  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.platform-card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.platform-card__figure {
  margin: 0;
  aspect-ratio: 16 / 9;
  background: var(--ink-deep);
  overflow: hidden;
}

.platform-card__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.platform-card__inner {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.5rem;
}

/* 两图并排 */
.media-duo {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
}

@media (min-width: 640px) {
  .media-duo {
    grid-template-columns: repeat(2, 1fr);
  }
}

.media-duo figure {
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.media-duo img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.media-duo figcaption {
  padding: 0.85rem 1.1rem;
  color: var(--text-soft);
  font-size: 0.89rem;
  line-height: 1.6;
}

.platform-card h3 .icon {
  color: var(--cyan-dark);
}

.platform-card h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: 1.08rem;
}

.platform-card p {
  flex: 1;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.platform-card__specs {
  margin: 0.9rem 0 1.1rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line-soft);
}

.platform-card__specs li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.3rem 0;
  color: var(--text-soft);
  font-size: 0.88rem;
}

.platform-card__specs strong {
  color: var(--ink);
  font-weight: 600;
  text-align: right;
}

.notice {
  padding: 1.1rem 1.3rem;
  background: var(--cyan-wash);
  border-radius: var(--radius);
  color: var(--ink-mid);
  font-size: 0.93rem;
}

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

/* 下一步入口 */

.next-step {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  padding: 1.6rem 1.8rem;
  background: var(--ink);
  border-radius: var(--radius-lg);
  color: rgba(238, 248, 246, 0.8);
}

.next-step h2,
.next-step h3 {
  margin-bottom: 0.3rem;
  color: var(--paper);
  font-size: 1.15rem;
}

.next-step p {
  margin: 0;
  font-size: 0.93rem;
}

.next-step__text {
  flex: 1 1 18rem;
}

/* --------------------------------------------------------------------------
   16. 搜索页
   -------------------------------------------------------------------------- */

.search-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 1.6rem;
}

.search-form__field {
  flex: 1 1 14rem;
}

.search-form label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 600;
}

.search-form input[type="search"] {
  width: 100%;
  min-height: 48px;
  padding: 0.6rem 0.9rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text);
  font: inherit;
  font-size: 1rem;
}

.search-form input[type="search"]:focus {
  border-color: var(--cyan);
  outline: 3px solid rgba(23, 184, 166, 0.28);
  outline-offset: 0;
}

.search-form__submit {
  display: flex;
  align-items: flex-end;
}

.search-summary {
  margin-bottom: 1.2rem;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.search-hint__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.7rem;
}

.search-hint__list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: 0.9rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.9rem;
}

.search-hint__list a:hover {
  border-color: var(--cyan);
}

.search-results {
  display: grid;
  gap: 1rem;
}

.search-result {
  padding: 1.2rem 1.3rem;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.search-result h3 {
  margin-bottom: 0.35rem;
  font-size: 1.05rem;
}

.search-result p {
  margin: 0 0 0.4rem;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.search-result__path {
  color: var(--text-faint);
  font-size: 0.82rem;
}

/* --------------------------------------------------------------------------
   17. 网站地图 / 404
   -------------------------------------------------------------------------- */

.sitemap-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .sitemap-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .sitemap-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.sitemap-block {
  padding: 1.4rem 1.5rem;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
}

.sitemap-block h2 {
  margin-bottom: 0.8rem;
  font-size: 1.08rem;
}

.sitemap-block li a {
  display: flex;
  align-items: center;
  min-height: 44px;
  color: var(--text);
  font-size: 0.94rem;
  border-bottom: 1px solid var(--line-soft);
}

.sitemap-block li:last-child a {
  border-bottom: 0;
}

.sitemap-block li a:hover {
  color: var(--cyan-dark);
}

.sitemap-block--nested li a {
  padding-left: 0.9rem;
}

/* 404 */

.error-stage {
  padding-block: calc(var(--section-gap) * 0.9);
  text-align: center;
}

.error-stage__code {
  margin-bottom: 0.8rem;
  color: var(--cyan);
  font-family: var(--font-num);
  font-size: clamp(3.5rem, 14vw, 6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.06em;
}

.error-stage h1 {
  margin-bottom: 0.8rem;
}

.error-stage p {
  max-width: 34rem;
  margin-inline: auto;
  color: var(--text-soft);
}

.error-stage .btn-row {
  justify-content: center;
  margin-top: 1.6rem;
}

.error-routes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.9rem;
  max-width: 44rem;
  margin: 2.5rem auto 0;
  text-align: left;
}

.error-routes a {
  display: block;
  padding: 1rem 1.1rem;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  font-weight: 600;
}

.error-routes a:hover {
  border-color: var(--cyan);
}

.error-routes span {
  display: block;
  margin-top: 0.2rem;
  color: var(--text-faint);
  font-size: 0.84rem;
  font-weight: 400;
}

/* --------------------------------------------------------------------------
   18. 页脚
   -------------------------------------------------------------------------- */

.site-footer {
  background: var(--ink-deep);
  color: rgba(238, 248, 246, 0.7);
  font-size: 0.92rem;
}

.site-footer__main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-block: 3rem 2.4rem;
}

@media (min-width: 640px) {
  .site-footer__main {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .site-footer__main {
    grid-template-columns: 1.6fr repeat(3, 1fr);
    gap: 2.6rem;
  }
}

.footer-brand__mark {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.9rem;
  color: var(--paper);
  font-size: 1.1rem;
  font-weight: 700;
}

.footer-brand__mark svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.footer-brand p {
  margin-bottom: 1rem;
  line-height: 1.7;
}

.footer-brand dl {
  margin: 0;
}

.footer-brand dl div {
  display: flex;
  gap: 0.5rem;
  padding: 0.2rem 0;
}

.footer-brand dt {
  color: rgba(238, 248, 246, 0.5);
  flex-shrink: 0;
}

.footer-brand dd {
  margin: 0;
  color: rgba(238, 248, 246, 0.85);
  word-break: break-all;
}

.footer-nav h2 {
  margin-bottom: 0.6rem;
  color: var(--paper);
  font-size: 0.98rem;
}

.footer-nav a {
  display: flex;
  align-items: center;
  min-height: 44px;
  color: rgba(238, 248, 246, 0.7);
}

.footer-nav a:hover {
  color: var(--cyan);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem 1.5rem;
  padding-block: 1.2rem;
  border-top: 1px solid var(--line-dark);
  font-size: 0.86rem;
}

.site-footer__legal p {
  margin: 0;
}

.site-footer__legal nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.2rem;
}

.site-footer__legal a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: rgba(238, 248, 246, 0.7);
}

.site-footer__legal a:hover {
  color: var(--cyan);
}

/* 返回顶部 ---------------------------------------------------------------- */

.back-to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background: var(--ink);
  border: 1px solid var(--line-dark);
  border-radius: 50%;
  color: var(--paper);
  font-size: 1.1rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}

.back-to-top:hover {
  background: var(--ink-mid);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

@media (min-width: 900px) {
  .back-to-top {
    right: 1.75rem;
    bottom: 1.75rem;
  }
}

/* --------------------------------------------------------------------------
   19. 辅助
   -------------------------------------------------------------------------- */

/* --------------------------------------------------------------------------
   20. 图标
   -------------------------------------------------------------------------- */

.icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: block;
}

.icon-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  background: var(--cyan-wash);
  border-radius: 12px;
  color: var(--ink);
}

.band--ink .icon-badge {
  background: rgba(23, 184, 166, 0.16);
  color: var(--cyan);
}

/* --------------------------------------------------------------------------
   21. 要点图标网格
   -------------------------------------------------------------------------- */

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.4rem;
}

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .feature-grid--four {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-item {
  display: flex;
  gap: 1rem;
  padding: 1.3rem 1.4rem;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
}

.band--ink .feature-item {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--line-dark);
}

.feature-item h3 {
  margin-bottom: 0.35rem;
  font-size: 1.02rem;
}

.band--ink .feature-item h3 {
  color: var(--paper);
}

.feature-item p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.91rem;
  line-height: 1.65;
}

.band--ink .feature-item p {
  color: rgba(238, 248, 246, 0.75);
}

/* --------------------------------------------------------------------------
   22. 图文交错区块
   -------------------------------------------------------------------------- */

.zigzag {
  display: grid;
  gap: 3rem;
}

.zigzag__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
  align-items: center;
}

@media (min-width: 860px) {
  .zigzag__row {
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
  }

  .zigzag__row:nth-child(even) .zigzag__figure {
    order: 2;
  }
}

.zigzag__figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.zigzag__figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.zigzag__index {
  position: absolute;
  left: 1rem;
  top: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  background: rgba(6, 39, 37, 0.86);
  border-radius: 999px;
  color: #6fe4d5;
  font-family: var(--font-num);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
}

.zigzag__body h3 {
  margin-bottom: 0.8rem;
  font-size: clamp(1.2rem, 2.4vw, 1.5rem);
}

.zigzag__body p {
  color: var(--text-soft);
}

.zigzag__points {
  display: grid;
  gap: 0.6rem;
  margin-top: 1.2rem;
}

.zigzag__points li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  color: var(--text-soft);
  font-size: 0.93rem;
}

.zigzag__points .icon {
  width: 20px;
  height: 20px;
  margin-top: 0.28rem;
  color: var(--cyan-dark);
}

/* --------------------------------------------------------------------------
   23. 带图流程
   -------------------------------------------------------------------------- */

.flow-rail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  counter-reset: flow;
}

@media (min-width: 768px) {
  .flow-rail {
    grid-template-columns: repeat(3, 1fr);
  }
}

.flow-step {
  counter-increment: flow;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.flow-step__figure {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--ink-deep);
  overflow: hidden;
}

.flow-step__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.flow-step__figure::after {
  content: "STEP " counter(flow, decimal-leading-zero);
  position: absolute;
  left: 0.9rem;
  bottom: 0.8rem;
  padding: 0.25rem 0.7rem;
  background: rgba(6, 39, 37, 0.86);
  border-radius: 999px;
  color: #6fe4d5;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.flow-step__body {
  padding: 1.2rem 1.3rem 1.4rem;
}

.flow-step__body h3 {
  margin-bottom: 0.4rem;
  font-size: 1.05rem;
}

.flow-step__body p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.92rem;
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   24. 使用场景卡片（图上压字）
   -------------------------------------------------------------------------- */

.showcase-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.3rem;
}

@media (min-width: 640px) {
  .showcase-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .showcase-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.showcase-card {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 260px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  isolation: isolate;
}

.showcase-card img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.showcase-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    to top,
    rgba(6, 39, 37, 0.92) 0%,
    rgba(6, 39, 37, 0.6) 45%,
    rgba(9, 52, 49, 0.28) 100%
  );
}

.showcase-card__body {
  padding: 1.3rem 1.4rem;
  color: var(--paper);
}

.showcase-card__kind {
  display: inline-block;
  margin-bottom: 0.5rem;
  padding: 0.2rem 0.6rem;
  background: rgba(23, 184, 166, 0.2);
  border: 1px solid rgba(23, 184, 166, 0.45);
  border-radius: 999px;
  color: #6fe4d5;
  font-size: 0.72rem;
  font-weight: 600;
}

.showcase-card h3 {
  margin-bottom: 0.35rem;
  color: var(--paper);
  font-size: 1.08rem;
}

.showcase-card p {
  margin: 0;
  color: rgba(238, 248, 246, 0.86);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   25. 对照表与对比双栏
   -------------------------------------------------------------------------- */

.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  font-size: 0.93rem;
}

.spec-table caption {
  padding-bottom: 0.7rem;
  color: var(--text-faint);
  font-size: 0.86rem;
  text-align: left;
}

.spec-table th,
.spec-table td {
  padding: 0.85rem 1.1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}

.spec-table thead th {
  background: var(--ink);
  color: var(--paper);
  font-weight: 600;
  white-space: nowrap;
}

.spec-table tbody th {
  width: 32%;
  color: var(--ink);
  font-weight: 600;
}

.spec-table td {
  color: var(--text-soft);
}

.spec-table tbody tr:last-child th,
.spec-table tbody tr:last-child td {
  border-bottom: 0;
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.compare-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.3rem;
}

@media (min-width: 768px) {
  .compare-cols {
    grid-template-columns: repeat(2, 1fr);
  }
}

.compare-col {
  padding: 1.5rem 1.6rem;
  border-radius: var(--radius-lg);
}

.compare-col--do {
  background: var(--cyan-wash);
  border: 1px solid rgba(23, 184, 166, 0.35);
}

.compare-col--dont {
  background: var(--sand-deep);
  border: 1px solid var(--line);
}

.compare-col h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
  font-size: 1.05rem;
}

.compare-col li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.6rem;
  color: var(--text-soft);
  font-size: 0.93rem;
  line-height: 1.65;
}

.compare-col li::before {
  position: absolute;
  left: 0;
  top: 0;
  font-weight: 700;
}

.compare-col--do li::before {
  content: "✓";
  color: var(--cyan-dark);
}

.compare-col--dont li::before {
  content: "×";
  color: var(--text-faint);
}

/* 更新日志 */

.changelog {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.changelog__item {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}

.changelog__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1rem;
  margin-bottom: 0.4rem;
}

.changelog__ver {
  padding: 0.15rem 0.6rem;
  background: var(--ink);
  border-radius: var(--radius-sm);
  color: var(--paper);
  font-family: var(--font-num);
  font-size: 0.86rem;
  font-weight: 700;
}

.changelog__head time {
  color: var(--text-faint);
  font-size: 0.86rem;
}

.changelog__item p:last-child {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.93rem;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   26. 锚点目录与标签
   -------------------------------------------------------------------------- */

.toc {
  padding: 1.3rem 1.5rem;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
}

.toc h2 {
  margin-bottom: 0.7rem;
  font-size: 1.02rem;
}

.toc ol {
  display: grid;
  gap: 0;
  counter-reset: toc;
}

@media (min-width: 640px) {
  .toc ol {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 1.5rem;
  }
}

.toc li {
  counter-increment: toc;
}

.toc a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 44px;
  color: var(--text);
  font-size: 0.93rem;
}

.toc a::before {
  content: counter(toc, decimal-leading-zero);
  color: var(--cyan-dark);
  font-family: var(--font-num);
  font-size: 0.8rem;
}

.toc a:hover {
  color: var(--cyan-dark);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.tag-row li {
  padding: 0.3rem 0.75rem;
  background: var(--cyan-wash);
  border-radius: 999px;
  color: var(--ink-mid);
  font-size: 0.83rem;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   27. 侧栏配图
   -------------------------------------------------------------------------- */

.section-nav__figure {
  display: block;
  aspect-ratio: 3 / 2;
  background: var(--ink-deep);
  overflow: hidden;
}

.section-nav__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --------------------------------------------------------------------------
   28. 带图页头
   -------------------------------------------------------------------------- */

.page-banner {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.page-banner__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-banner__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-banner__media + .page-banner__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    100deg,
    rgba(6, 39, 37, 0.95) 0%,
    rgba(6, 39, 37, 0.86) 48%,
    rgba(9, 52, 49, 0.6) 100%
  );
}

/* 卡片整体作为点击区：标题链接用伪元素铺满卡片。
   卡片内没有其他链接或按钮，不会覆盖相邻可点击元素。 */
.product-card,
.journal-card {
  position: relative;
}

.product-card__body h3 a::after,
.journal-card__body h3 a::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .btn:hover,
  .product-card:hover {
    transform: none;
  }
}

@media print {
  .site-header,
  .site-footer,
  .back-to-top,
  .section-nav {
    display: none;
  }
}


/* ==========================================================================
   页脚密度优化
   44x44 命中区是给触控用的；桌面用鼠标不需要，因此按视口宽度分档，
   触控宽度（<1024px）保持 44px，桌面收紧到 34px。
   ========================================================================== */

@media (min-width: 1024px) {
  .footer-nav a,
  .site-footer__legal a {
    min-height: 34px;
  }

  .site-footer__main {
    padding-block: 2.6rem 2rem;
  }
}

/* 移动端：栏目分两列，品牌区独占整行 */
@media (max-width: 639px) {
  .site-footer__main {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.6rem 1.2rem;
    padding-block: 2.2rem 1.6rem;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-brand p {
    margin-bottom: 0.8rem;
    font-size: 0.88rem;
  }


  .site-footer__legal {
    padding-block: 0.8rem;
  }
}


/* 联系资料：桌面双列，移动端单列但保持标签与值同行 */
.footer-brand dl {
  display: grid;
  gap: 0 1.5rem;
}

.footer-brand dl div {
  padding: 0.22rem 0;
}

.footer-brand dt {
  flex-shrink: 0;
}

/* 页脚栏目：三组等宽，品牌区略宽 */
@media (min-width: 1024px) {
  .site-footer__main {
    grid-template-columns: 1.5fr repeat(3, 1fr);
  }
}

.footer-brand__more {
  margin: 0.4rem 0 0;
}

.footer-brand__more .arrow-link {
  min-height: 44px;
  font-size: 0.9rem;
}

/* ZSite 生产模板适配：只修正动态内容带来的尺寸与交互边界。 */
.brand__mark,
.footer-brand__mark > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--ink);
  color: var(--cyan);
  font-size: 0.9rem;
}

.footer-brand__mark > span {
  width: 32px;
  height: 32px;
  margin-right: 0.45rem;
}

.inner-main,
.product-card,
.journal-card,
.contact-card,
.feature-item,
.platform-card {
  min-width: 0;
}

.article-figure,
.figure {
  margin: 0 0 1.5rem;
  overflow: hidden;
  border-radius: var(--radius);
}

.article-figure img,
.figure img {
  width: 100%;
  height: auto;
}

.contact-card address {
  color: inherit;
  font-style: normal;
}

.search-result h2 {
  margin-bottom: 0.45rem;
  font-size: clamp(1.08rem, 2vw, 1.3rem);
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.page-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.page-item-current {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

[hidden] {
  display: none !important;
}

@media (max-width: 1023px) {
  .nav-toggle {
    width: 48px;
    min-width: 48px;
    height: 48px;
    margin: 0;
  }

  .nav-item__row > a {
    min-height: 48px;
  }
}

@media (max-width: 639px) {
  .inner-layout {
    width: 100%;
    min-width: 0;
  }

  .product-grid,
  .journal-grid,
  .contact-grid,
  .feature-grid,
  .platform-grid,
  .compare-cols {
    grid-template-columns: minmax(0, 1fr);
  }

  .table-scroll,
  .panel,
  .prose,
  .zigzag__body {
    max-width: 100%;
    overflow-wrap: anywhere;
  }

  .site-footer__legal nav {
    width: 100%;
  }
}