/* ============================================================
   大院儿二胡陪练 · Web 全局样式（组件/布局，全站共享）
   国风·温润清晰 + 专业品牌站质感：纸感肌理、留白节奏、定制组件
   零 emoji；PC 优先（base = 桌面，max-width 断点降级移动）
   当前阶段：整体框架 + 占位符（图片/图标/二维码均为占位，不生成真实素材）
   ============================================================ */

/* —— Reset —— */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--background);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  overflow-wrap: break-word;
  background-image:
    radial-gradient(circle at 18% 22%, rgba(184,78,52,0.035) 0, transparent 42%),
    radial-gradient(circle at 82% 78%, rgba(184,78,52,0.035) 0, transparent 42%);
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; }

/* —— 布局容器 —— */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
.sec { padding: 72px 0; }
.sec-alt { background: var(--white); border-top: 1px solid var(--divider); border-bottom: 1px solid var(--divider); }

/* 通用小标签（中文栏目标签，参考 nvc 栏目结构但中文化以适配银发用户） */
.eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: .5px; font-weight: 600;
  color: var(--primary); margin-bottom: 10px;
}
.section-head { text-align: center; margin-bottom: 44px; }
.section-head h2 {
  font-family: var(--font-serif); font-size: clamp(26px, 3.4vw, 32px); font-weight: 700;
  color: var(--primary-dark); letter-spacing: 1px;
}
.section-head p { color: var(--text-light); margin-top: 10px; font-size: 16px; }
.divider-line { width: 48px; height: 3px; background: var(--primary); border-radius: 2px; margin: 16px auto 0; }
.sec-more { text-align: center; margin-top: 36px; }

/* —— 按钮（主色唯一） —— */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 28px; border: none; border-radius: var(--radius-md);
  font-size: 16px; font-weight: 600; cursor: pointer; white-space: nowrap;
  transition: transform .15s ease, background .15s ease, box-shadow .15s ease;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 2px 10px rgba(184,78,52,0.18); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-ghost:hover { background: rgba(184,78,52,0.06); }

/* —— 占位标记（文字型，标注待填真实数据/文案） —— */
.placeholder-flag { font-size: 11px; color: var(--gray); border: 1px dashed var(--gray-light); border-radius: 4px; padding: 0 5px; }

/* —— 占位符系统（图片/图标/二维码统一占位框，不生成真实素材） —— */
.ph {
  display: flex; align-items: center; justify-content: center;
  background-color: #ece3d6;
  background-image: repeating-linear-gradient(45deg, #e6dccd 0 9px, #ece3d6 9px 18px);
  border: 1px dashed #b0a99a; color: #8a7a68;
  border-radius: var(--radius-md); text-align: center;
  font-size: 11px; line-height: 1.3; letter-spacing: .5px;
}
.ph--icon { width: 48px; height: 48px; flex: none; }
.ph--icon-sm { width: 22px; height: 22px; flex: none; border-radius: 6px; font-size: 9px; }
.ph--img { min-height: 260px; padding: 18px; }
.ph--img-lg { min-height: 380px; padding: 18px; }
.ph--qr { width: 132px; height: 132px; flex: none; }
.ph--qr-sm { width: 64px; height: 64px; flex: none; }
.ph--hero { position: absolute; inset: 0; border-radius: 0; border: none; }

/* 图标槽：复用占位框外观（.ico / .cat-ico / .p-ico / .s-ico / .ck / .tick） */
.ico, .cat-ico, .p-ico, .s-ico, .ck, .tick {
  display: flex; align-items: center; justify-content: center;
  background-color: #ece3d6;
  background-image: repeating-linear-gradient(45deg, #e6dccd 0 8px, #ece3d6 8px 16px);
  border: 1px dashed #b0a99a; color: #8a7a68; font-size: 10px;
}
.ico { width: 48px; height: 48px; border-radius: var(--radius-md); margin-bottom: 16px; }
.cat-ico { width: 46px; height: 46px; border-radius: 50%; margin: 0 auto 12px; }
.p-ico { width: 46px; height: 46px; border-radius: var(--radius-md); margin-bottom: 14px; }
.p-ico.brush {
  width: 52px; height: 52px; border-radius: 50%;
  background: rgba(184,78,52,0.08); border: 1px solid rgba(184,78,52,0.15);
  background-image: none;
  font-family: "Xingkai SC", "KaiTi", "STKaiti", "Ma Shan Zheng", var(--font-serif), serif;
  font-size: 22px; font-weight: 700; color: var(--primary-dark);
  display: flex; align-items: center; justify-content: center;
}
.s-ico { width: 28px; height: 28px; border-radius: 6px; flex: none; }
.ck, .tick { width: 22px; height: 22px; border-radius: 6px; flex: none; font-size: 9px; }

/* —— 顶部导航（PC 横向） —— */
.nav {
  position: sticky; top: 0; z-index: 50; height: var(--nav-h);
  background: rgba(245,239,228,0.94); backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--divider);
}
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand .seal {
  width: 36px; height: 36px; border-radius: var(--radius-sm); background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center; font-family: var(--font-serif); font-weight: 700; font-size: 20px;
}
.brand .name { font-family: var(--font-serif); font-weight: 700; font-size: 18px; color: var(--primary-dark); }
.brand .name small { font-family: var(--font-sans); font-weight: 400; font-size: 12px; color: var(--text-light); margin-left: 6px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { font-size: 15px; color: var(--text-light); position: relative; padding: 4px 0; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
/* 临时隐藏：帮助中心 / 下载 两个主导航标签 */
.nav-links a[href="help.html"],
.nav-links a[href="download.html"] { display: none; }
/* 同步隐藏页脚“快速导航”中的同两个入口 */
.f-col a[href="help.html"],
.f-col a[href="download.html"] { display: none; }
.nav-links a.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; background: var(--primary); border-radius: 2px; }
.nav-cta { color: #fff !important; margin-left: 4px; }
.nav-cta::after { display: none; }
.nav-toggle { display: none; background: none; border: none; font-size: 0; color: var(--primary); cursor: pointer; width: 30px; height: 30px; }
.nav-toggle::before {
  content: ""; display: block; width: 26px; height: 26px; margin: 0 auto;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23B84E34' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M4 7h16M4 12h16M4 17h16'/%3E%3C/svg%3E") no-repeat center / contain;
}

/* —— Hero（摄影图占位 + 赤陶红暖光，参考雷士"品牌色作为光"） —— */
.hero {
  position: relative; min-height: 88vh;
  display: flex; align-items: center; justify-content: center; text-align: center;
  background: #c9b29c; overflow: hidden;
}
.hero-ph {
  position: absolute; inset: 0;
  background: #c9b29c url("../img/hero-erhu.png") center 50% / cover no-repeat;
  display: flex; align-items: flex-end; justify-content: center; padding-bottom: 22px;
}
.hero-ph-label { color: rgba(255,255,255,0.92); font-size: 12px; background: rgba(0,0,0,0.28); padding: 6px 14px; border-radius: 999px; }
/* 把 hero 遮罩与内容提到最上层，使轮播背景在底层 */
.hero::before { z-index: 1; }
.hero-content { position: relative; z-index: 2; }
.hero-scroll { z-index: 2; }
/* 品牌页 Hero 4 张摄影图占位轮播 */
.hero-slides { position: absolute; inset: 0; z-index: 0; }
.hero-slide {
  position: absolute; inset: 0; opacity: 0; transition: opacity 1.2s ease;
  background-size: cover; background-position: center; background-repeat: no-repeat;
}
.hero-slide.active { opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .hero-slide { transition: none; }
}
/* 暖光遮罩：保留"品牌色作为光"的设计意图，真实摄影图替换 hero-ph/hero-slide 后即可生效 */
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(245,239,228,0.18) 0%, rgba(245,239,228,0.34) 100%);
}
.hero-content { position: relative; z-index: 3; max-width: 760px; }
.hero-tag {
  display: inline-block; font-size: 13px; font-weight: 600; color: #fff;
  background: rgba(255,255,255,0.16); border: 1px solid rgba(255,255,255,0.45);
  padding: 6px 16px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 {
  font-family: var(--font-serif); font-size: clamp(34px, 5.5vw, 52px); line-height: 1.22; font-weight: 700; color: var(--text); letter-spacing: 1px;
  text-shadow: 0 1px 12px rgba(245,239,228,0.6);
}
.hero h1 .accent { color: #FFE6D6; }
.hero .sub { font-size: 18px; color: rgba(255,255,255,0.92); margin: 22px auto 30px; max-width: 34em; text-shadow: 0 1px 10px rgba(122,51,37,0.3); }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 30px; list-style: none; justify-content: center; }
.hero-trust li { display: flex; align-items: center; gap: 7px; font-size: 14px; color: rgba(255,255,255,0.92); }

/* 暖光背景上的按钮 */
.btn-light { background: #fff; color: var(--primary); box-shadow: 0 4px 16px rgba(122,51,37,0.22); }
.btn-light:hover { background: #f7efe6; transform: translateY(-1px); }
.btn-outline-light { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.75); }
.btn-outline-light:hover { background: rgba(255,255,255,0.14); }

/* 滚动提示 */
.hero-scroll { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 3; color: rgba(255,255,255,0.85); animation: heroBounce 1.8s ease-in-out infinite; }
@keyframes heroBounce { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 8px); } }

/* 轮播指示点（标注当前位置，可点击切换） */
.hero-dots { position: absolute; left: 50%; bottom: 70px; transform: translateX(-50%); z-index: 3; display: flex; gap: 14px; }
.hero-dot {
  width: 11px; height: 11px; padding: 0; margin: 0;
  border: 1.5px solid rgba(122,51,37,0.6); border-radius: 50%;
  background: rgba(122,51,37,0.20); cursor: pointer;
  transition: background .2s ease, transform .2s ease, border-color .2s ease;
}
.hero-dot:hover { background: rgba(122,51,37,0.42); }
.hero-dot:focus-visible { outline: 2px solid var(--primary-dark); outline-offset: 3px; }
.hero-dot.active { background: var(--primary-dark); border-color: var(--primary-dark); transform: scale(1.2); }

/* 品牌页 Hero：去赤陶红覆盖，保留薄奶白纱（--background #F5EFE4）让原摄影图透色；
   文字转白，配深墨投影光晕保可读（不靠色罩压暗照片）。仅作用于 .hero--brand。 */
.hero--brand::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(245,239,228,0.18) 0%, rgba(245,239,228,0.34) 100%);
}
.hero--brand .hero-tag { color: #fff; background: rgba(20,12,8,0.30); border-color: rgba(255,255,255,0.6); }
.hero--brand h1 { color: #fff; text-shadow: 0 2px 26px rgba(20,12,8,0.55), 0 1px 4px rgba(20,12,8,0.40); }
.hero--brand .sub { color: rgba(255,255,255,0.94); text-shadow: 0 1px 14px rgba(20,12,8,0.55), 0 1px 3px rgba(20,12,8,0.40); }
.hero--brand .btn-light { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(20,12,8,0.28); }
.hero--brand .btn-light:hover { background: var(--primary-dark); }
.hero--brand .btn-outline-light { background: rgba(20,12,8,0.12); color: #fff; border-color: rgba(255,255,255,0.85); }
.hero--brand .btn-outline-light:hover { background: rgba(255,255,255,0.16); }
.hero--brand .hero-scroll { color: #fff; }

/* 内页副 Hero（功能/品牌/下载/帮助 通用） */
.subhero { padding: 64px 0 40px; text-align: center; background: var(--white); border-bottom: 1px solid var(--divider); }
.subhero .eyebrow { margin-bottom: 8px; }
.subhero h1 { font-family: var(--font-serif); font-size: clamp(28px, 4vw, 40px); color: var(--primary-dark); letter-spacing: 1px; }
.subhero p { color: var(--text-light); margin-top: 12px; font-size: 16px; }

/* —— 数据信任条 —— */
.stats { background: var(--white); border-bottom: 1px solid var(--divider); }
.stats-inner { display: flex; flex-wrap: wrap; justify-content: center; gap: 56px; padding: 32px; }
.stat { text-align: center; }
.stat .num { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat .lab { font-size: 13px; color: var(--text-light); margin-top: 2px; }

/* —— 功能卡（产品矩阵式） —— */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--white); border: 1px solid var(--divider); border-radius: var(--radius-lg);
  padding: 28px; box-shadow: 0 1px 3px rgba(122,51,37,0.05);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 10px 26px rgba(184,78,52,0.10); border-color: rgba(184,78,52,0.3); }
.card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.card p { font-size: 15px; color: var(--text-light); }

/* —— 功能深读（图文交替） —— */
.deep { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.deep-text .eyebrow { margin-bottom: 10px; }
.deep-text h2 { font-family: var(--font-serif); font-size: 28px; color: var(--primary-dark); margin-bottom: 14px; }
.deep-text p { color: var(--text-light); font-size: 15px; margin-bottom: 18px; }
.deep-list { list-style: none; margin-bottom: 22px; }
.deep-list li { display: flex; align-items: center; gap: 9px; padding: 7px 0; font-size: 15px; }
.deep-art { border-radius: var(--radius-xl); background: var(--white); border: 1px solid var(--divider); box-shadow: 0 10px 30px rgba(122,51,37,0.08); overflow: hidden; position: relative; min-height: 320px; }
.deep-art img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.deep-art .ph { min-height: 320px; border: none; border-radius: 0; }

/* —— 适用人群分类卡 —— */
.cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cat { background: var(--white); border: 1px solid var(--divider); border-radius: var(--radius-md); padding: 26px 20px; text-align: center; transition: transform .15s ease, box-shadow .15s ease; }
.cat:hover { transform: translateY(-3px); box-shadow: 0 8px 22px rgba(184,78,52,0.08); }
.cat h4 { font-size: 16px; margin-bottom: 6px; }
.cat p { font-size: 14px; color: var(--text-light); }

/* —— 会员 —— */
.vip {
  background: linear-gradient(180deg, var(--gold-light) 0%, rgba(184,78,52,0.04) 100%);
  border: 1px solid rgba(184,78,52,0.12); border-radius: var(--radius-xl); padding: 48px;
}
.vip-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.vip-benefits li { display: flex; gap: 10px; padding: 10px 0; color: var(--text); font-size: 15px; align-items: center; }
.plans { display: grid; gap: 14px; }
.plan { border: 1.5px solid var(--gray-light); border-radius: var(--radius-md); padding: 18px 22px; display: flex; justify-content: space-between; align-items: center; background: rgba(255,255,255,0.78); }
.plan.recommend { border-color: var(--primary); background: rgba(255,255,255,0.9); }
.plan .pname { font-weight: 600; color: var(--gold); }
.plan .pprice { color: var(--primary); font-weight: 700; font-size: 18px; }
.plan .ptag { font-size: 11px; background: var(--primary); color: #fff; border-radius: 4px; padding: 1px 6px; margin-left: 6px; }

/* —— 信任背书 / 资质 —— */
.pillars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.pillar { background: var(--white); border: 1px solid var(--divider); border-radius: var(--radius-lg); padding: 28px 22px; }
.pillar h4 { font-size: 17px; margin-bottom: 8px; }
.pillar p { font-size: 15px; color: var(--text-light); }
.honor-wall { margin-top: 28px; text-align: center; padding: 22px; border: 1px dashed var(--gray-light); border-radius: var(--radius-md); color: var(--gray); font-size: 13px; }

/* —— 证言 —— */
.quotes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.quote { background: var(--white); border: 1px solid var(--divider); border-radius: var(--radius-lg); padding: 28px; box-shadow: 0 1px 3px rgba(122,51,37,0.05); }
.quote p { font-size: 16px; color: var(--text); }
.quote .who { margin-top: 14px; font-size: 13px; color: var(--text-light); }

/* —— 资讯 / 社区 —— */
.news { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.news-h { font-size: 17px; color: var(--primary-dark); margin-bottom: 14px; font-weight: 600; }
.news-list li { display: flex; align-items: baseline; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--divider); }
.news-list .nd { font-size: 12px; color: var(--primary); background: rgba(184,78,52,0.08); border-radius: 4px; padding: 1px 7px; flex: none; }
.news-list a { font-size: 16px; color: var(--text); }
.news-list a:hover { color: var(--primary); }

/* —— 下载区 —— */
.download { text-align: center; }
.dl { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 48px; align-items: center; max-width: 880px; margin: 0 auto; }
.dl-stores { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.store-btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  background: var(--white); border: 1px solid var(--divider); border-radius: var(--radius-md);
  padding: 16px; min-height: 60px; box-shadow: 0 1px 3px rgba(122,51,37,0.05); transition: transform .15s ease, box-shadow .15s ease;
}
.store-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(184,78,52,0.10); }
.store-btn .s-txt { text-align: left; }
.store-btn .s-txt small { display: block; font-size: 11px; color: var(--text-light); }
.store-btn .s-txt b { font-size: 15px; }
.dl-qr { text-align: center; }
.qr-placeholder { width: 132px; height: 132px; margin: 0 auto; border-radius: var(--radius-md); border: 1px dashed var(--gray-light); display: flex; align-items: center; justify-content: center; color: var(--gray); font-size: 12px; text-align: center; background: var(--white); }
.dl-note { font-size: 12px; color: var(--text-light); margin-top: 12px; max-width: 18em; margin-left: auto; margin-right: auto; }

/* —— 合规页脚 —— */
.footer { background: var(--primary-dark); color: #f3e7da; padding: 56px 0 28px; font-size: 13px; }
.footer a { color: #f3e7da; }
.footer a:hover { color: #fff; text-decoration: underline; }
.f-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; }
.f-brand .brand .name { color: #fff; }
.f-brand .brand .name small { color: rgba(243,231,218,0.7); }
.f-desc { opacity: .85; max-width: 30em; margin: 16px 0; line-height: 1.7; }
.f-follow { display: flex; align-items: center; gap: 12px; opacity: .9; }
.follow-qr { width: 64px; height: 64px; border: 1px dashed rgba(243,231,218,0.5); border-radius: 8px; display: flex; align-items: center; justify-content: center; text-align: center; font-size: 10px; line-height: 1.3; }
.f-col h4 { font-size: 14px; color: #fff; margin-bottom: 14px; font-weight: 600; }
.f-col ul li { padding: 5px 0; }
.f-bottom { margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.15); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; color: rgba(243,231,218,0.8); }
.beian { display: flex; flex-wrap: wrap; gap: 14px; }
.f-links a { margin-right: 20px; }

/* —— 法律页（隐私/用户协议）：目录 + 正文 —— */
.legal-wrap { display: grid; grid-template-columns: 240px 1fr; gap: 48px; align-items: start; }
.toc { position: sticky; top: calc(var(--nav-h) + 24px); align-self: start; background: var(--white); border: 1px solid var(--divider); border-radius: var(--radius-md); padding: 18px 0; }
.toc .toc-h { font-size: 13px; font-weight: 600; color: var(--text-light); padding: 0 18px 8px; }
.toc a { display: block; padding: 7px 18px; color: var(--text-light); font-size: 14px; border-left: 2px solid transparent; }
.toc a:hover, .toc a.active { color: var(--primary); border-left-color: var(--primary); background: rgba(184,78,52,0.04); }
.article { background: var(--white); border: 1px solid var(--divider); border-radius: var(--radius-lg); padding: 40px; }
.article .legal-meta { color: var(--gray); font-size: 13px; margin-bottom: 8px; }
.article h2 { font-family: var(--font-serif); font-size: 22px; color: var(--primary-dark); margin: 32px 0 12px; padding-top: 8px; }
.article h2:first-of-type { margin-top: 0; }
.article h3 { font-size: 17px; margin: 20px 0 8px; color: var(--text); }
.article p { color: var(--text-light); margin-bottom: 12px; font-size: 16px; }
.article h4 { font-size: 15.5px; margin: 16px 0 6px; color: var(--primary-dark); font-weight: 600; }
.article ul.legal-list { margin: 0 0 12px 4px; }
.article ul.legal-list li { color: var(--text-light); font-size: 15px; padding: 4px 0 4px 18px; position: relative; }
.article ul.legal-list li::before { content: "·"; color: var(--primary); position: absolute; left: 4px; font-weight: 700; }
.article ol.legal-list { margin: 0 0 12px 22px; padding: 0; }
.article ol.legal-list li { color: var(--text-light); font-size: 15px; padding: 4px 0; }
.article .legal-hr { border: none; border-top: 1px dashed var(--divider); margin: 40px 0 8px; }
.article strong { color: var(--text); font-weight: 600; }
.table-wrap { overflow-x: auto; margin: 8px 0 16px; border: 1px solid var(--divider); border-radius: var(--radius-md); }
.legal-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 480px; }
.legal-table th, .legal-table td { padding: 10px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--divider); color: var(--text-light); line-height: 1.7; }
.legal-table thead th { background: rgba(184,78,52,0.06); color: var(--primary-dark); font-weight: 600; white-space: nowrap; }
.legal-table tbody th { background: rgba(184,78,52,0.03); color: var(--text); font-weight: 600; white-space: nowrap; width: 130px; }
.legal-table tr:last-child th, .legal-table tr:last-child td { border-bottom: none; }

/* —— 帮助中心：使用指南 + FAQ —— */
.guide { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-bottom: 56px; }
.guide:last-child { margin-bottom: 0; }
.guide-text h3 { font-family: var(--font-serif); font-size: 22px; color: var(--primary-dark); margin-bottom: 12px; }
.guide-text p { color: var(--text-light); font-size: 15px; margin-bottom: 12px; }
.guide-text ol { margin: 0 0 0 4px; counter-reset: step; }
.guide-text ol li { color: var(--text-light); font-size: 15px; padding: 6px 0 6px 30px; position: relative; }
.guide-text ol li::before { counter-increment: step; content: counter(step); position: absolute; left: 0; top: 6px; width: 20px; height: 20px; border-radius: 50%; background: rgba(184,78,52,0.10); color: var(--primary); font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.guide-art { border-radius: var(--radius-xl); background: var(--white); border: 1px solid var(--divider); box-shadow: 0 10px 30px rgba(122,51,37,0.08); overflow: hidden; }
.guide-art .ph { min-height: 300px; border: none; border-radius: 0; }

.faq { border: 1px solid var(--divider); border-radius: var(--radius-md); overflow: hidden; background: var(--white); max-width: 820px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--divider); }
.faq-item:last-child { border-bottom: none; }
.faq-q { width: 100%; text-align: left; background: none; border: none; padding: 18px 22px; font-size: 16px; font-weight: 600; color: var(--text); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq-q .chev { transition: transform .2s ease; color: var(--primary); flex: none; font-size: 0; width: 20px; height: 20px; }
.faq-q .chev::before {
  content: ""; display: block; width: 20px; height: 20px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23B84E34' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat center / contain;
}
.faq-item.open .chev { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .25s ease; }
.faq-a-inner { padding: 0 22px 18px; color: var(--text-light); font-size: 15px; line-height: 1.8; }

/* —— 响应式（PC 优先：桌面为 base，向下降级） —— */
@media (max-width: 1024px) {
  .deep, .vip-grid, .dl, .legal-wrap, .guide { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .cats, .pillars { grid-template-columns: repeat(2, 1fr); }
  .news { grid-template-columns: 1fr; gap: 28px; }
  .f-top { grid-template-columns: 1fr 1fr; }
  .deep-art, .guide-art { order: -1; }
  .toc { position: static; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .nav-links { display: none; position: absolute; top: var(--nav-h); left: 0; right: 0; flex-direction: column; gap: 0; background: var(--background); border-bottom: 1px solid var(--divider); padding: 8px 0; }
  .nav-links a { padding: 12px 32px; }
  .nav-cta { margin: 8px 32px; text-align: center; }
  .nav-toggle { display: block; }
  .hero h1 { font-size: 34px; }
  .sec { padding: 52px 0; }
  .section-head h2 { font-size: 26px; }
  .subhero h1 { font-size: 30px; }
  .cards, .cats, .pillars, .quotes, .dl-stores { grid-template-columns: 1fr; }
  .f-top, .f-bottom { grid-template-columns: 1fr; }
  .stats-inner { gap: 28px; }
  .article { padding: 24px; }
}

/* —— 面包屑（产品层回跳品牌页） —— */
.breadcrumb { display: flex; align-items: center; gap: 8px; padding-top: 18px; padding-bottom: 6px; font-size: 14px; color: var(--text-light); }
.breadcrumb a { color: var(--primary); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .sep { color: var(--gray); }
.breadcrumb .cur { color: var(--text); font-weight: 600; }

/* —— 品牌页产品矩阵 —— */
.prod-matrix { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.prod-card { background: var(--white); border: 1px solid var(--divider); border-radius: var(--radius-xl); padding: 36px; box-shadow: 0 1px 3px rgba(122,51,37,0.05); display: flex; flex-direction: column; align-items: flex-start; transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease; }
.prod-card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(184,78,52,0.10); border-color: rgba(184,78,52,0.3); }
.prod-ico { width: 56px; height: 56px; border-radius: var(--radius-md); margin-bottom: 18px; background-color: #ece3d6; background-image: repeating-linear-gradient(45deg, #e6dccd 0 8px, #ece3d6 8px 16px); border: 1px dashed #b0a99a; }
.prod-tag { display: inline-block; font-size: 12px; font-weight: 600; color: var(--primary); background: rgba(184,78,52,0.08); border-radius: 999px; padding: 3px 12px; margin-bottom: 12px; }
.prod-card h3 { font-family: var(--font-serif); font-size: 22px; color: var(--primary-dark); margin-bottom: 10px; }
.prod-card p { color: var(--text-light); font-size: 15px; margin-bottom: 22px; flex: 1; }
.prod-card .btn { align-self: flex-start; }
.prod-card--feature { border-color: rgba(184,78,52,0.35); background: linear-gradient(180deg, rgba(184,78,52,0.04), #fff); }
.prod-soon { display: block; margin-top: -8px; }

@media (max-width: 768px) {
  .prod-matrix { grid-template-columns: 1fr; }
}