/* ==========================================================================
   搜狗输入法官网 - 全站样式表
   纯静态、移动优先、无框架依赖
   断点：1400 / 1200 / 992 / 768 / 480
   ========================================================================== */

:root {
  --primary: #e67e22;
  --primary-dark: #d35400;
  --primary-light: #f39c12;
  --page-bg: #f5f9ff;
  --card-bg: #ffffff;
  --nav-bg: rgba(255, 255, 255, 0.92);
  --text: #1a2332;
  --text-sub: #4a5a72;
  --text-sub-2: #3d4f66;
  --line: rgba(0, 0, 0, 0.05);
  --line-2: rgba(0, 0, 0, 0.06);
  --shadow-sm: 0 4px 16px rgba(26, 35, 50, 0.06);
  --shadow-md: 0 10px 30px rgba(26, 35, 50, 0.08);
  --radius-card: 20px;
  --radius-common: 16px;
}

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

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

body {
  font-family: 'Segoe UI', Roboto, system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--page-bg);
  padding-top: 80px;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.3; color: var(--text); }
h1 { font-size: 3.2rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.2rem; }

.container {
  width: 100%;
  max-width: 80%;
  margin: 0 auto;
  padding: 0 20px;
}

.section { padding: 50px 0 40px; }
.section-head { text-align: center; max-width: 780px; margin: 0 auto 34px; }
.section-head h2 { margin-bottom: 12px; }
.section-head .subtitle { font-size: 1.1rem; color: var(--text-sub); }
.section-head.left { text-align: left; margin-left: 0; }
.section-head.left p { color: var(--text-sub); }

.hl { color: var(--primary); }

/* ------------------------------ 顶部导航 ------------------------------ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
}
.nav-inner {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand img { height: 30px; width: auto; }
.nav-links { display: flex; align-items: center; }
.nav-links a {
  position: relative;
  display: inline-block;
  margin-left: 28px;
  padding: 6px 0;
  font-size: .98rem;
  font-weight: 600;
  color: var(--text-sub-2);
  transition: color .25s ease;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--primary);
  transition: width .28s ease;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--primary); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  position: relative;
  transition: background .2s;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: ''; position: absolute; left: 0;
  width: 22px; height: 2px; background: var(--text);
  transition: transform .25s ease;
}
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span::after { transform: translateY(-7px) rotate(-45deg); }

/* ------------------------------ 按钮 ------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 38px;
  border-radius: 60px;
  font-size: 1rem;
  font-weight: 600;
  white-space: nowrap;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff;
  box-shadow: 0 8px 22px rgba(230, 126, 34, 0.3);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(230, 126, 34, 0.45);
}
.btn-ghost {
  background: #fff;
  color: var(--primary-dark);
  border: 2px solid rgba(230, 126, 34, 0.35);
  padding: 12px 34px;
}
.btn-ghost:hover {
  transform: translateY(-3px);
  border-color: var(--primary);
  box-shadow: 0 12px 26px rgba(230, 126, 34, 0.18);
}
.btn-sm { padding: 10px 24px; font-size: .92rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 26px; }

/* ------------------------------ Hero ------------------------------ */
.hero { padding: 50px 0 40px; }
.hero-card {
  background: var(--card-bg);
  border-radius: 36px;
  padding: 36px 40px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 44px;
}
.hero-copy { flex: 1 1 0; min-width: 0; }
.hero-copy h1 { margin-bottom: 16px; }
.hero-copy p.lead { font-size: 1.08rem; color: var(--text-sub); max-width: 560px; }
.badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 15px;
  border-radius: 60px;
  background: rgba(230, 126, 34, 0.09);
  color: var(--primary-dark);
  font-size: .88rem;
  font-weight: 600;
}
.badge svg { width: 15px; height: 15px; fill: var(--primary); }
.hero-visual { flex: 1 1 0; min-width: 0; }
.hero-visual img { width: 100%; border-radius: 24px; background: #fff; }
.hero-visual figcaption { margin-top: 14px; text-align: center; font-size: .88rem; color: var(--text-sub); }

/* ------------------------------ 通用网格与卡片 ------------------------------ */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  padding: 28px 22px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
  transition: transform .28s ease, box-shadow .28s ease;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.card h3 { margin: 14px 0 8px; }
.card p { color: var(--text-sub); font-size: .96rem; }
.card-icon {
  width: 46px; height: 46px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(230, 126, 34, 0.1);
}
.card-icon svg { width: 24px; height: 24px; fill: var(--primary); }

.panel {
  background: var(--card-bg);
  border-radius: var(--radius-common);
  padding: 26px 22px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
}

/* ------------------------------ 交替图文区块 ------------------------------ */
.feature-row {
  display: flex;
  align-items: center;
  gap: 44px;
  background: var(--card-bg);
  border-radius: 28px;
  padding: 34px 36px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
}
.feature-row + .feature-row { margin-top: 26px; }
.feature-row.reverse { flex-direction: row-reverse; }
.feature-row > .fr-text { flex: 1 1 0; min-width: 0; }
.feature-row > .fr-media { flex: 1 1 0; min-width: 0; }
.feature-row .fr-media img { border-radius: 20px; width: 100%; }
.feature-row h2 { font-size: 1.75rem; margin-bottom: 10px; }
.feature-row .subtitle { color: var(--text-sub); margin-bottom: 16px; }
.check-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 10px;
  color: var(--text-sub);
}
.check-list li::before {
  content: '';
  position: absolute;
  left: 0; top: .55em;
  width: 14px; height: 8px;
  border-left: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  transform: rotate(-45deg);
}
.stat-number { font-size: 2.6rem; font-weight: 700; color: var(--primary); line-height: 1.1; }
.stat-label { color: var(--text-sub); font-size: .92rem; }

/* 语音演示控件 */
.voice-demo {
  background: linear-gradient(160deg, #fff7ef, #ffe9d4);
  border-radius: 20px;
  padding: 22px;
  border: 1px solid rgba(230, 126, 34, 0.18);
}
.voice-demo .vd-screen {
  background: #fff;
  border-radius: 14px;
  padding: 16px;
  min-height: 96px;
  font-size: .98rem;
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--line-2);
}
.voice-demo .vd-screen .placeholder { color: #9aa7b8; }
.vd-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; align-items: center; }
.chip {
  padding: 7px 14px;
  border-radius: 60px;
  background: #fff;
  border: 1px solid rgba(230, 126, 34, 0.25);
  font-size: .85rem;
  color: var(--primary-dark);
  font-weight: 600;
}
.chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.mic-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 60px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff;
  font-weight: 600;
  box-shadow: 0 8px 20px rgba(230, 126, 34, 0.3);
}
.mic-btn svg { width: 16px; height: 16px; fill: currentColor; }
.mic-btn.recording { background: linear-gradient(135deg, #ef5350, #d32f2f); }

/* ------------------------------ 皮肤卡片 ------------------------------ */
.skin-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.skin-card {
  background: var(--card-bg);
  border-radius: var(--radius-common);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: transform .28s ease, box-shadow .28s ease;
}
.skin-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.skin-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.skin-card .skin-body { padding: 16px 18px 20px; }
.skin-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.skin-card p { font-size: .92rem; color: var(--text-sub); margin-bottom: 10px; }
.tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 60px;
  font-size: .78rem;
  font-weight: 600;
  color: var(--primary-dark);
  background: rgba(230, 126, 34, 0.1);
}
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 28px; }
.filter-bar .chip { cursor: pointer; }
.skin-card.hide, .article-card.hide { display: none; }

/* ------------------------------ 繁体字区块 ------------------------------ */
.example {
  display: block;
  margin-top: 10px;
  padding: 8px 12px;
  border-radius: 10px;
  background: rgba(230, 126, 34, 0.07);
  color: var(--text-sub-2);
  font-size: .88rem;
}

/* ------------------------------ 下载区 ------------------------------ */
.download-band {
  background: linear-gradient(135deg, #fff5ea, #ffffff 65%);
  border: 1px solid rgba(230, 126, 34, 0.16);
  border-radius: 30px;
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  box-shadow: var(--shadow-sm);
}
.download-band h2 { font-size: 1.9rem; margin-bottom: 10px; }
.download-band .subtitle { color: var(--text-sub); }
.platform-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.platform-row span {
  padding: 6px 14px;
  border-radius: 60px;
  background: #fff;
  border: 1px solid var(--line-2);
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-sub-2);
}
.band-action { text-align: center; flex-shrink: 0; }
.band-action .version { margin-top: 12px; font-size: .88rem; color: var(--text-sub); }

/* ------------------------------ 资讯卡片 ------------------------------ */
.article-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.article-card {
  background: var(--card-bg);
  border-radius: var(--radius-common);
  padding: 24px 24px 22px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: transform .28s ease, box-shadow .28s ease;
}
.article-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.article-card h3 { font-size: 1.08rem; margin-bottom: 10px; }
.article-card h3 a { transition: color .2s; }
.article-card h3 a:hover { color: var(--primary); }
.article-card p { font-size: .94rem; color: var(--text-sub); }
.article-meta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 14px; font-size: .82rem; color: #8695a8; }
.more-link { display: inline-block; margin-top: 16px; color: var(--primary-dark); font-weight: 600; font-size: .92rem; }
.more-link:hover { text-decoration: underline; }
.center { text-align: center; margin-top: 32px; }

/* ------------------------------ 口碑指标 ------------------------------ */
.metric { background: var(--card-bg); border-radius: var(--radius-card); padding: 28px 20px; text-align: center; border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.metric .num { font-size: 2.2rem; font-weight: 700; color: var(--primary); line-height: 1.2; }
.metric .name { font-weight: 600; margin: 8px 0 4px; }
.metric .desc { font-size: .88rem; color: var(--text-sub); }

/* ------------------------------ FAQ ------------------------------ */
.faq-list { max-width: 900px; margin: 0 auto; }
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-common);
  box-shadow: var(--shadow-sm);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-item h3 { margin: 0; font-size: 1rem; font-weight: 600; }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 22px;
  text-align: left;
  font-weight: 600;
}
.faq-q .arrow {
  flex-shrink: 0;
  width: 10px; height: 10px;
  border-right: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  transform: rotate(45deg);
  transition: transform .25s ease;
}
.faq-item.open .faq-q .arrow { transform: rotate(-135deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a-inner { padding: 0 22px 20px; color: var(--text-sub); font-size: .95rem; }
.faq-a-inner a { color: var(--primary-dark); font-weight: 600; }
.faq-item.open .faq-a { max-height: 560px; }

/* ------------------------------ 页脚 ------------------------------ */
.footer { margin-top: 60px; background: #fff; border-top: 1px solid var(--line-2); padding: 46px 0 20px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; }
.footer h4 { font-size: 1rem; margin-bottom: 14px; }
.footer p { color: var(--text-sub); font-size: .92rem; }
.footer .footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.footer .footer-brand img { height: 22px; }
.footer li { margin-bottom: 9px; }
.footer li a { color: var(--text-sub); font-size: .92rem; transition: color .2s; }
.footer li a:hover { color: var(--primary); }
.footer-bottom { margin-top: 34px; padding-top: 18px; border-top: 1px solid var(--line-2); text-align: center; color: #8695a8; font-size: .85rem; }
.footer-bottom span { display: block; margin-top: 6px; }

/* ------------------------------ 浮动工具 ------------------------------ */
.float-tools { position: fixed; right: 24px; bottom: 30px; z-index: 1200; display: flex; flex-direction: column; gap: 14px; }
.float-btn {
  width: 52px; height: 52px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: #fff;
  box-shadow: 0 8px 22px rgba(26, 35, 50, 0.16);
  transition: transform .25s ease, background .25s ease;
}
.float-btn svg { width: 22px; height: 22px; fill: var(--primary); }
.float-btn:hover { transform: translateY(-3px); }
.float-btn.contact { background: linear-gradient(135deg, var(--primary-light), var(--primary)); }
.float-btn.contact svg { fill: #fff; }
#backTop { opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s, transform .25s; }
#backTop.show { opacity: 1; visibility: visible; }

.contact-pop {
  position: fixed;
  right: 24px; bottom: 100px;
  width: 280px;
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 18px 44px rgba(26, 35, 50, 0.18);
  padding: 20px;
  z-index: 1300;
  display: none;
}
.contact-pop.show { display: block; }
.contact-pop h4 { margin-bottom: 12px; font-size: 1rem; }
.contact-pop p { font-size: .9rem; color: var(--text-sub); margin-bottom: 8px; }
.contact-pop .close { position: absolute; top: 10px; right: 14px; font-size: 1.2rem; color: #9aa7b8; line-height: 1; }

/* ------------------------------ 内页头部 ------------------------------ */
.page-hero {
  background: linear-gradient(135deg, #fff5ea, #ffffff);
  border-radius: 30px;
  padding: 40px 40px;
  border: 1px solid rgba(230, 126, 34, 0.14);
  box-shadow: var(--shadow-sm);
  margin-top: 40px;
}
.page-hero h1 { font-size: 2.4rem; margin-bottom: 12px; }
.page-hero p { color: var(--text-sub); max-width: 780px; }
.breadcrumb { font-size: .86rem; color: #8695a8; margin-bottom: 12px; }
.breadcrumb a:hover { color: var(--primary); }

/* 文章正文 */
.post { background: #fff; border-radius: 24px; padding: 38px 44px; box-shadow: var(--shadow-sm); border: 1px solid var(--line); margin-top: 26px; }
.post h1 { font-size: 2rem; margin-bottom: 14px; }
.post .article-meta { margin-top: 0; margin-bottom: 22px; }
.post h2 { font-size: 1.45rem; margin: 30px 0 12px; }
.post h3 { font-size: 1.12rem; margin: 22px 0 10px; }
.post p { color: var(--text-sub-2); margin-bottom: 14px; }
.post ul { margin: 0 0 16px 0; }
.post ul li { position: relative; padding-left: 22px; margin-bottom: 9px; color: var(--text-sub-2); }
.post ul li::before { content: ''; position: absolute; left: 4px; top: .62em; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
.post ol { counter-reset: n; margin: 0 0 16px 0; }
.post ol li { position: relative; padding-left: 30px; margin-bottom: 9px; color: var(--text-sub-2); counter-increment: n; }
.post ol li::before {
  content: counter(n);
  position: absolute; left: 0; top: .18em;
  width: 20px; height: 20px; border-radius: 50%;
  background: rgba(230, 126, 34, 0.12); color: var(--primary-dark);
  font-size: .76rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.tip {
  background: rgba(230, 126, 34, 0.07);
  border-left: 4px solid var(--primary);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 20px 0;
  font-size: .95rem;
  color: var(--text-sub-2);
}
.post-nav { display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--line-2); }
.related { margin-top: 36px; }
.related h2 { font-size: 1.4rem; margin-bottom: 16px; }

/* 表单 */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.field label { font-size: .92rem; font-weight: 600; }
.field input, .field textarea, .field select {
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: #fff;
  font-size: .95rem;
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.12);
}
.field textarea { min-height: 140px; resize: vertical; }
.form-note { font-size: .85rem; color: #8695a8; margin-top: 12px; }

/* 下载页平台卡 */
.platform-card { display: flex; align-items: center; gap: 18px; }
.platform-card .pc-icon { width: 54px; height: 54px; border-radius: 16px; background: rgba(230, 126, 34, 0.1); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.platform-card .pc-icon svg { width: 26px; height: 26px; fill: var(--primary); }
.platform-card .pc-body { flex: 1 1 auto; min-width: 0; }
.platform-card h3 { margin-bottom: 4px; }
.platform-card .req { margin-top: 8px; font-size: .85rem; color: var(--text-sub); }

table.spec { width: 100%; border-collapse: collapse; font-size: .94rem; background: #fff; border-radius: 14px; overflow: hidden; }
table.spec th, table.spec td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--line); }
table.spec th { background: rgba(230, 126, 34, 0.07); font-weight: 600; }
table.spec tr:last-child td { border-bottom: 0; }

/* ------------------------------ 响应式 ------------------------------ */
@media (max-width: 1400px) {
  .container { max-width: 88%; }
}
@media (max-width: 1200px) {
  .container { max-width: 92%; }
  h1, .hero-copy h1 { font-size: 2.8rem; }
}
@media (max-width: 992px) {
  .container { max-width: 95%; padding: 0 16px; }
  h1, .hero-copy h1 { font-size: 2.4rem; }
  h2 { font-size: 1.9rem; }
  .section-head .subtitle { font-size: 1.02rem; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .skin-grid { grid-template-columns: repeat(2, 1fr); }
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .nav-links a { margin-left: 18px; font-size: .92rem; }
  .hero-card { gap: 30px; padding: 30px 28px; }
  .feature-row { gap: 26px; padding: 26px 24px; }
}
@media (max-width: 768px) {
  body { padding-top: 68px; }
  .container { max-width: 100%; }
  .nav-inner { height: 68px; }
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(255, 255, 255, 0.98);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.07);
    padding: 6px 20px 14px;
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
  }
  .nav-links.open { max-height: 480px; }
  .nav-links a { margin: 0; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: .96rem; }
  .nav-links a::after { display: none; }
  h1, .hero-copy h1 { font-size: 2rem; }
  h2 { font-size: 1.8rem; }
  .section { padding: 40px 0 30px; }
  .grid-3, .grid-4, .grid-2, .skin-grid, .article-grid, .form-grid { grid-template-columns: 1fr; }
  .hero-card { flex-direction: column; padding: 26px 20px; border-radius: 28px; gap: 26px; }
  .hero-visual { width: 100%; }
  .feature-row, .feature-row.reverse { flex-direction: column; padding: 24px 20px; }
  .download-band { flex-direction: column; align-items: flex-start; padding: 28px 22px; }
  .band-action { width: 100%; text-align: left; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .page-hero { padding: 28px 22px; margin-top: 26px; }
  .page-hero h1 { font-size: 1.9rem; }
  .post { padding: 26px 20px; }
  .post h1 { font-size: 1.6rem; }
  .faq-q { padding: 16px 18px; }
}
@media (max-width: 480px) {
  body { padding-top: 60px; }
  .nav-inner { height: 60px; }
  .nav-links { top: 60px; }
  .nav-links a { font-size: .78rem; padding: 12px 0; }
  .brand img { height: 24px; }
  h1, .hero-copy h1 { font-size: 1.6rem; }
  h2 { font-size: 1.4rem; }
  .section-head .subtitle { font-size: .95rem; }
  .section { padding: 32px 0 24px; }
  .container { padding: 0 12px; }
  .card { padding: 20px 16px; }
  .btn { padding: 10px 24px; font-size: .92rem; }
  .btn-ghost { padding: 9px 22px; }
  .hero-card { border-radius: 20px; padding: 20px 16px; }
  .feature-row { border-radius: 20px; padding: 20px 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .float-tools { right: 14px; bottom: 18px; }
  .float-btn { width: 46px; height: 46px; }
  .contact-pop { right: 14px; left: 14px; width: auto; }
  .stat-number { font-size: 2rem; }
  .faq-item h3, .faq-q { font-size: .95rem; }
  .faq-a-inner { padding: 0 16px 18px; }
  table.spec th, table.spec td { padding: 11px 12px; }
}