/* ==========================================================================
   太似 tiiiyes 官网 · 共享样式框架 main.css
   --------------------------------------------------------------------------
   用法：每个页面 <head> 中按顺序引入
     1. assets/css/vendor-swiper.css      （仅用到轮播的页面）
     2. assets/css/vendor-magnific.css    （仅用到 lightbox 的页面）
     3. assets/css/main.css               （全站必引）
   说明：
   - 全部品牌色 / 字体 / 间距 / 圆角集中在 :root CSS 变量，后期换肤只改这里。
   - 深色主题为基础（深蓝底白字）；白底区块加 .section-light。
   - 组件均为「类名 + data 属性」无侵入式，配合 assets/js/main.js 生效。
   ========================================================================== */

/* ---------- 字体 ---------- */
/* DM Sans（可变字重 100-1000）与思源宋体 Noto Serif SC（500/700 中文衬线）
   均已自托管切片于 fonts.css，本文件不再声明 @font-face */

/* ---------- 品牌设计变量（换肤改这里） ---------- */
:root {
  /* 品牌主色 */
  --c-navy:        #0A1A2F;   /* 主背景 / 导航 */
  --c-navy-2:      #0E2438;   /* 深蓝渐变浅端 */
  --c-dark:        #1C1C1E;   /* 次级背景 / 卡片 */
  --c-dark-2:      #232326;   /* 深灰卡片悬浮态 */
  --c-white:       #FFFFFF;

  /* 强调色 */
  --c-green:       #2D6A4F;   /* CTA 按钮 / 链接 / 维度标识 */
  --c-green-hover: #3A8563;
  --c-gold:        #C9A961;   /* 数据高亮 / 认证标识 / 细金线 */
  --c-gold-dim:    rgba(201, 169, 97, .4);

  /* 深色主题文字 */
  --c-text:        rgba(255, 255, 255, .92);
  --c-text-dim:    rgba(255, 255, 255, .62);
  --c-text-faint:  rgba(255, 255, 255, .4);

  /* 浅色区块（.section-light）文字 */
  --c-ink:         #1C1C1E;
  --c-ink-dim:     rgba(28, 28, 30, .66);

  /* 线条 */
  --c-border:      rgba(255, 255, 255, .1);
  --c-border-light: rgba(28, 28, 30, .12);

  /* 字体栈（与 tiiiair.cn 同方案：标题抖音美好体 Bold，正文 HarmonyOS Sans SC） */
  --font-cn:      "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-en:      'DM Sans', "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: 'Douyin Sans', "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; /* 大标题/金句 */
  --font-mono:    ui-monospace, 'SF Mono', Consolas, 'Courier New', monospace;

  /* 间距（8px 基准） */
  --sp-1: 8px;  --sp-2: 16px; --sp-3: 24px; --sp-4: 32px;
  --sp-5: 48px; --sp-6: 64px; --sp-7: 96px; --sp-8: 128px;

  /* 圆角 */
  --radius-s: 6px;
  --radius:   12px;
  --radius-l: 20px;

  /* 布局 */
  --container: 1200px;
  --header-h: 76px;
  --header-h-shrink: 58px;

  /* 动效 */
  --ease: cubic-bezier(.22, .61, .36, 1);
  --dur: .45s;
}

/* ---------- 基础复位 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: auto; /* 平滑滚动交给 Lenis */ }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }

body {
  font-family: var(--font-cn);
  font-size: 17.5px;
  line-height: 1.85;
  color: var(--c-text);
  background: var(--c-navy);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: var(--c-gold); text-decoration: none; transition: color .25s; }
a:hover { color: var(--c-gold); opacity: .85; }
ul, ol { list-style: none; }
button { font-family: inherit; background: none; border: 0; cursor: pointer; color: inherit; }
input, textarea, select { font-family: inherit; }
::selection { background: var(--c-green); color: #fff; }

/* 数字/英文默认走 DM Sans（可变字重，500/600/700 为真实字重） */
.num, .en, .stat-number, .btn, .quad-data, .ring-num, .t-year { font-family: var(--font-en); }
/* 品牌数据统一表格数字对齐；等宽只留给检测报告表格 */
.stat-number, .quad-data, .ring-num, .t-year, [data-counter] { font-variant-numeric: tabular-nums; }
.mono { font-family: var(--font-mono); }

/* ---------- 排版 ---------- */
/* 大标题走衬线（思源宋体自托管），小标题保持黑体加粗：一静一动拉开层级 */
h1, h2 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.24;
  letter-spacing: 0;
  color: var(--c-white);
}
h3, h4 {
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .01em;
  color: var(--c-white);
}
h1 { font-size: clamp(40px, 5.4vw, 72px); }
h2 { font-size: clamp(34px, 4.6vw, 66px); }
h3 { font-size: clamp(23px, 2.5vw, 30px); }
h4 { font-size: 20px; }
p + p { margin-top: var(--sp-2); }

/* 区块小眉题（灰白小字 + 金色短线，金色留给数据与金句） */
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 15px; letter-spacing: .22em;
  color: var(--c-text-dim);
  margin-bottom: var(--sp-2);
}
.kicker::before { content: ""; width: 22px; height: 1px; background: var(--c-gold); }
.section-light .kicker { color: var(--c-ink-dim); }

/* 区块副文案 */
.lead { font-size: 20px; color: var(--c-text-dim); max-width: 760px; }

/* 记忆钉（衬线金句） */
.nail {
  font-family: var(--font-display);
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 500; color: var(--c-gold);
  line-height: 1.6; letter-spacing: .02em;
}
.section-light .nail { color: #8A6D2F; }
.nail small { display: block; font-family: var(--font-cn); font-size: 15px; font-weight: 400; color: var(--c-text-faint); margin-top: var(--sp-2); letter-spacing: 0; }

/* 细金线分隔 */
.hr-gold { border: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--c-gold-dim), transparent); margin: var(--sp-5) auto; max-width: 720px; }

/* ---------- 布局 ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container-wide { max-width: 1440px; }

.section { padding: var(--sp-7) 0; position: relative; }
/* 纯色底加一角微光，消除大色块的"铁板感" */
.section-dark  { background: radial-gradient(1100px 520px at 12% 112%, rgba(45, 106, 79, .1), transparent 62%), var(--c-dark); }
.section-navy  { background: radial-gradient(1200px 560px at 88% -12%, rgba(201, 169, 97, .07), transparent 60%), var(--c-navy); }
.section-grad  { background: linear-gradient(160deg, var(--c-navy) 0%, var(--c-navy-2) 60%, #123024 130%); }

/* 浅色区块：产品页 / 报告页 / FAQ 用白底 */
.section-light { background: var(--c-white); color: var(--c-ink); }
.section-light h1, .section-light h2, .section-light h3, .section-light h4 { color: var(--c-ink); }
.section-light .lead { color: var(--c-ink-dim); }
.section-light .card { background: #F7F6F3; border-color: var(--c-border-light); }
/* 浅色/浅灰区块下，所有默认白色低透明度文字统一改为墨色（白底白字修复） */
.section-light .stat-label, .section-light .ring-name, .section-light .ring-desc,
.section-tint .stat-label, .section-tint .ring-name, .section-tint .ring-desc,
.section-light .nail small, .section-tint .nail small,
.section-tint .kicker, .section-tint .lead,
.section-light .timeline-node .t-text, .section-tint .timeline-node .t-text { color: var(--c-ink-dim); }
.section-tint h1, .section-tint h2, .section-tint h3, .section-tint h4 { color: var(--c-ink); }
.section-tint { color: var(--c-ink); }

.section-head { max-width: 660px; margin-bottom: var(--sp-5); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .kicker { justify-content: center; }
.section-head.center .kicker::after { content: ""; width: 22px; height: 1px; background: var(--c-gold); }

.grid { display: grid; gap: var(--sp-3); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ==========================================================================
   站点导航（headroom 滚动隐藏/出现 + 桌面下拉 + 移动汉堡抽屉）
   ========================================================================== */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 900;
  height: var(--header-h);
  background: rgba(10, 26, 47, .82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: height var(--dur) var(--ease), background .3s, border-color .3s, transform .4s var(--ease);
}
/* headroom 状态类 */
.site-header.headroom--unpinned { transform: translateY(-100%); }
.site-header.headroom--pinned   { transform: translateY(0); }
/* 滚动后收缩高度 */
.site-header.is-shrink { height: var(--header-h-shrink); background: rgba(10, 26, 47, .95); border-bottom-color: var(--c-border); }

.header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 40px; width: auto; transition: height var(--dur) var(--ease); }
.is-shrink .brand img { height: 32px; }

/* 桌面导航 */
.nav-desktop > ul { display: flex; align-items: center; gap: 4px; }
.nav-desktop a {
  display: block; padding: 10px 14px;
  font-size: 16px; letter-spacing: .04em; color: var(--c-text);
  border-radius: var(--radius-s);
  transition: color .25s, background .25s;
}
.nav-desktop a:hover { color: var(--c-gold); opacity: 1; }
.nav-desktop .is-active > a { color: var(--c-gold); background: rgba(201, 169, 97, .12); }
/* 下拉父项箭头 */
.has-dropdown > a::after {
  content: ""; display: inline-block; margin-left: 7px; vertical-align: 3px;
  border: 5px solid transparent; border-top-color: var(--c-text-dim);
  transition: transform .3s;
}
.has-dropdown:hover > a::after { transform: rotate(180deg); }
/* 二级下拉 */
.has-dropdown { position: relative; }
.dropdown {
  position: absolute; top: calc(100% + 10px); left: 50%;
  min-width: 200px; padding: 10px;
  background: var(--c-dark); border: 1px solid var(--c-border);
  border-top: 2px solid var(--c-gold);
  border-radius: var(--radius);
  transform: translate(-50%, 12px); opacity: 0; visibility: hidden;
  transition: all .3s var(--ease);
  box-shadow: 0 24px 48px rgba(0, 0, 0, .45);
}
.has-dropdown:hover .dropdown, .has-dropdown:focus-within .dropdown {
  transform: translate(-50%, 0); opacity: 1; visibility: visible;
}
.dropdown a { white-space: nowrap; padding: 11px 16px; font-size: 15.5px; color: var(--c-text-dim); }
.dropdown a:hover { color: var(--c-gold); background: rgba(201, 169, 97, .08); }

/* 汉堡按钮（移动端） */
.nav-toggle { display: none; width: 44px; height: 44px; position: relative; z-index: 1002; }
.nav-toggle span {
  position: absolute; left: 10px; right: 10px; height: 2px;
  background: var(--c-white); transition: all .35s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 22px; }
.nav-toggle span:nth-child(3) { top: 29px; }
body.menu-open .nav-toggle span:nth-child(1) { top: 22px; transform: rotate(45deg); }
body.menu-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.menu-open .nav-toggle span:nth-child(3) { top: 22px; transform: rotate(-45deg); }

/* 移动端抽屉菜单 */
.nav-drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 1001;
  width: min(340px, 86vw);
  background: var(--c-dark);
  border-left: 1px solid var(--c-border);
  padding: calc(var(--header-h) + 20px) 28px 40px;
  transform: translateX(100%);
  transition: transform .45s var(--ease);
  overflow-y: auto;
}
body.menu-open .nav-drawer { transform: translateX(0); }
.nav-drawer a { display: block; padding: 15px 4px; font-size: 19px; color: var(--c-text); border-bottom: 1px solid var(--c-border); }
.nav-drawer a:hover { color: var(--c-gold); }
/* 抽屉内二级菜单：点击展开 */
.nav-drawer .has-dropdown > a { display: flex; justify-content: space-between; align-items: center; }
.nav-drawer .has-dropdown > a::after {
  content: "+"; font-family: var(--font-en); font-size: 20px; border: 0; margin: 0;
  transition: transform .3s;
}
.nav-drawer .has-dropdown.open > a::after { transform: rotate(45deg); }
.nav-drawer .dropdown {
  position: static; transform: none; opacity: 1; visibility: visible;
  background: none; border: 0; box-shadow: none; padding: 0 0 0 16px;
  display: none; min-width: 0;
}
.nav-drawer .has-dropdown.open .dropdown { display: block; }
.nav-drawer .dropdown a { font-size: 17px; color: var(--c-text-dim); padding: 10px 4px; }
/* 抽屉遮罩 */
.menu-mask {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0, 0, 0, .55);
  opacity: 0; visibility: hidden; transition: opacity .4s;
}
body.menu-open .menu-mask { opacity: 1; visibility: visible; }
body.menu-open { overflow: hidden; }

/* ==========================================================================
   按钮
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px;
  font-size: 16.5px; font-weight: 600; letter-spacing: .1em; line-height: 1.2;
  border-radius: 999px;
  transition: all .3s var(--ease);
  white-space: nowrap;
}
.btn .arrow { transition: transform .3s var(--ease); }
.btn:hover .arrow { transform: translateX(5px); }
/* 主 CTA：墨绿 */
.btn-primary { background: var(--c-green); color: #fff; }
.btn-primary:hover { background: var(--c-green-hover); color: #fff; opacity: 1; transform: translateY(-2px); box-shadow: 0 12px 28px rgba(45, 106, 79, .4); }
/* 次 CTA：描边金 */
.btn-outline { border: 1px solid var(--c-gold); color: var(--c-gold); }
.btn-outline:hover { background: var(--c-gold); color: var(--c-navy); opacity: 1; transform: translateY(-2px); }
/* 幽灵文字按钮 */
.btn-ghost { color: var(--c-text-dim); padding: 15px 10px; }
.btn-ghost:hover { color: var(--c-gold); opacity: 1; }
.btn-sm { padding: 11px 22px; font-size: 15px; }

/* ==========================================================================
   通用卡片
   ========================================================================== */
.card {
  background: var(--c-dark);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-l);
  padding: var(--sp-4);
  transition: transform .4s var(--ease), box-shadow .4s, border-color .4s;
}
.card-hover:hover { transform: translateY(-8px); box-shadow: 0 28px 56px rgba(0, 0, 0, .4); border-color: var(--c-gold-dim); }
.card-img { border-radius: var(--radius); overflow: hidden; margin-bottom: var(--sp-3); }
.card-img img { width: 100%; transition: transform .8s var(--ease); }
.card-hover:hover .card-img img { transform: scale(1.05); }

/* ==========================================================================
   四维拼图：四宫格（2×2，中央交汇提示）
   ========================================================================== */
.quad-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 2px; background: var(--c-border);
  border: 1px solid var(--c-border); border-radius: var(--radius-l);
  overflow: hidden; position: relative;
}
.quad-cell { background: var(--c-dark); padding: var(--sp-5) var(--sp-4); transition: background .35s; }
.quad-cell:hover { background: var(--c-dark-2); }
/* 对角错落：右上格下沉、左下格留白，打破 2×2 对称 */
@media (min-width: 993px) {
  .quad-grid .quad-cell:nth-child(2) { padding-top: calc(var(--sp-5) + 28px); }
  .quad-grid .quad-cell:nth-child(3) { padding-bottom: calc(var(--sp-5) + 28px); }
}
.quad-cell .quad-icon { width: 52px; height: 52px; margin-bottom: var(--sp-3); color: var(--c-gold); }
.quad-cell h3 { margin-bottom: var(--sp-2); }
.quad-cell .quad-conflict { color: var(--c-text-dim); margin-bottom: var(--sp-3); }
.quad-cell .quad-effect { font-size: 17px; color: var(--c-text); border-top: 1px solid var(--c-border); padding-top: var(--sp-3); }
.quad-cell .quad-data {
  display: inline-block; margin-top: var(--sp-2);
  font-weight: 500; font-size: 24px; letter-spacing: -.01em; color: var(--c-gold);
}
/* 中央交汇小字 */
.quad-center {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  background: var(--c-navy); border: 1px solid var(--c-gold-dim);
  border-radius: 999px; padding: 10px 22px;
  font-size: 14px; letter-spacing: .06em; color: var(--c-gold); text-align: center;
  max-width: 240px; z-index: 2; line-height: 1.5;
}

/* ==========================================================================
   数据卡片（大数字 + 等宽字体）
   ========================================================================== */
.stat-card { text-align: left; padding: var(--sp-4); border-left: 1px solid var(--c-gold-dim); }
.stat-number { font-size: clamp(46px, 5vw, 72px); font-weight: 500; color: var(--c-gold); line-height: 1.08; letter-spacing: -.01em; word-break: keep-all; }
.stat-number.mono { font-size: clamp(26px, 2.8vw, 40px); } /* 文字型大数字（α-θ / 非接触 / 报告编号）收敛字号，避免挤爆 */
.section-light .stat-number { color: #8A6D2F; }
.stat-label { margin-top: var(--sp-1); font-size: 15.5px; letter-spacing: .08em; color: var(--c-text-dim); }
/* 数据卡错落：桌面端偶数卡下沉半格，打破整齐一排 */
@media (min-width: 993px) {
  .grid-4 > .stat-card:nth-child(even) { margin-top: var(--sp-3); }
}

/* 统计环形图容器（屏5 数据心跳：纯 CSS 圆环，--p 由 JS 动画驱动） */
.ring-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-4); }
.ring-item { text-align: center; }
/* 圆环交错下沉，形成波浪轮廓而不是整齐方阵 */
@media (min-width: 993px) {
  .ring-grid .ring-item:nth-child(even) { margin-top: var(--sp-4); }
}
.ring {
  --p: 0;                                  /* 当前百分比，JS 动画写入 */
  width: 128px; height: 128px; margin: 0 auto var(--sp-2);
  border-radius: 50%;
  background: conic-gradient(var(--c-gold) calc(var(--p) * 1%), rgba(255, 255, 255, .08) 0);
  display: grid; place-items: center;
  position: relative;
}
.ring::before { content: ""; position: absolute; inset: 10px; border-radius: 50%; background: var(--c-navy); }
.section-dark .ring::before, .section-light .ring::before { background: inherit; }
.section-dark .ring::before { background: var(--c-dark); }
.section-light .ring { background: conic-gradient(var(--c-gold) calc(var(--p) * 1%), rgba(28, 28, 30, .08) 0); }
.section-light .ring::before { background: var(--c-white); }
.ring .ring-num { position: relative; z-index: 1; font-size: 30px; font-weight: 500; color: var(--c-gold); }
.ring-name { font-size: 16.5px; color: var(--c-text-dim); }
.ring-desc { font-size: 15px; color: var(--c-text-dim); margin-top: 4px; }

/* ==========================================================================
   Tab 组件  [data-tabs]
   结构：.tabs > .tabs-nav > button[data-tab="id"] + .tabs-panel[data-tab-panel="id"]
   ========================================================================== */
.tabs-nav { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: var(--sp-5); }
.tabs-nav button {
  padding: 11px 22px; border-radius: 999px;
  border: 1px solid var(--c-border);
  color: var(--c-text-dim); font-size: 16px;
  transition: all .3s var(--ease);
}
.tabs-nav button:hover { color: var(--c-gold); border-color: var(--c-gold-dim); }
.tabs-nav button.is-active { background: var(--c-green); border-color: var(--c-green); color: #fff; }
.section-light .tabs-nav button { border-color: var(--c-border-light); color: var(--c-ink-dim); }
.section-light .tabs-nav button.is-active { color: #fff; }
.tabs-panel { display: none; }
.tabs-panel.is-active { display: block; }

/* ==========================================================================
   手风琴  [data-accordion]（同时只展开一项）
   ========================================================================== */
.accordion-item { border-bottom: 1px solid var(--c-border); }
.section-light .accordion-item { border-bottom-color: var(--c-border-light); }
.accordion-head {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: var(--sp-3) 4px; text-align: left;
  font-size: 19px; font-weight: 700; color: var(--c-text);
  transition: color .25s;
}
.section-light .accordion-head { color: var(--c-ink); }
.accordion-head:hover { color: var(--c-gold); }
.accordion-head .acc-icon {
  flex: none; width: 28px; height: 28px; position: relative;
  border: 1px solid var(--c-gold-dim); border-radius: 50%;
}
.accordion-head .acc-icon::before, .accordion-head .acc-icon::after {
  content: ""; position: absolute; top: 50%; left: 50%; background: var(--c-gold);
  transition: transform .35s var(--ease);
}
.accordion-head .acc-icon::before { width: 12px; height: 1.5px; transform: translate(-50%, -50%); }
.accordion-head .acc-icon::after  { width: 1.5px; height: 12px; transform: translate(-50%, -50%); }
.accordion-item.open .acc-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.accordion-body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .45s var(--ease); }
.accordion-item.open .accordion-body { grid-template-rows: 1fr; }
.accordion-inner { overflow: hidden; }
.accordion-inner > div { padding: 0 4px var(--sp-3); color: var(--c-text-dim); }
.section-light .accordion-inner > div { color: var(--c-ink-dim); }

/* ==========================================================================
   时间轴（专注单线：一条水平线贯穿）
   ========================================================================== */
.timeline { position: relative; padding-top: var(--sp-5); }
.timeline::before {
  content: ""; position: absolute; top: var(--sp-5); left: 0; right: 0;
  height: 1px; background: linear-gradient(90deg, transparent, var(--c-gold-dim) 12%, var(--c-gold-dim) 88%, transparent);
}
.timeline-track { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-3); }
.timeline-node { position: relative; padding-top: var(--sp-4); }
.timeline-node::before {
  content: ""; position: absolute; top: -4px; left: 0;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--c-navy); border: 2px solid var(--c-gold);
}
.timeline-node .t-year { color: var(--c-gold); font-size: 26px; font-weight: 500; }
.timeline-node .t-text { margin-top: 6px; font-size: 16.5px; color: var(--c-text-dim); }

/* ==========================================================================
   声景播放器卡片  [data-sound="音频路径"]
   ========================================================================== */
.sound-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-3); }
.sound-card {
  display: flex; align-items: center; gap: var(--sp-2);
  background: var(--c-dark); border: 1px solid var(--c-border);
  border-radius: var(--radius); padding: 18px 20px;
  cursor: pointer; transition: border-color .3s, transform .3s var(--ease);
}
.sound-card:hover { border-color: var(--c-gold-dim); transform: translateY(-3px); }
.sound-card.playing { border-color: var(--c-gold); }
.sound-play {
  flex: none; width: 46px; height: 46px; border-radius: 50%;
  border: 1px solid var(--c-gold); position: relative;
  transition: background .3s;
}
.sound-play::before {
  content: ""; position: absolute; top: 50%; left: 54%;
  transform: translate(-50%, -50%);
  border: 8px solid transparent; border-left: 12px solid var(--c-gold);
}
.sound-card.playing .sound-play { background: var(--c-gold); }
.sound-card.playing .sound-play::before {
  border: 0; width: 12px; height: 14px; left: 50%;
  border-left: 4px solid var(--c-navy); border-right: 4px solid var(--c-navy);
}
.sound-info { flex: 1; min-width: 0; }
.sound-info h4 { font-size: 18px; }
.sound-info p { font-size: 14px; color: var(--c-text-faint); }
/* 声景波形条：播放时动画，暂停时静止 */
.sound-wave { flex: none; display: flex; align-items: flex-end; gap: 3px; height: 26px; }
.sound-wave span {
  width: 3px; height: 100%; border-radius: 2px;
  background: var(--c-gold); opacity: .35;
  transform-origin: bottom; transform: scaleY(.25);
  animation: wave 1.1s ease-in-out infinite;
  animation-play-state: paused;
}
.sound-card.playing .sound-wave span { opacity: 1; animation-play-state: running; }
.sound-wave span:nth-child(1) { animation-delay: 0s;    }
.sound-wave span:nth-child(2) { animation-delay: .15s;  }
.sound-wave span:nth-child(3) { animation-delay: .3s;   }
.sound-wave span:nth-child(4) { animation-delay: .1s;   }
.sound-wave span:nth-child(5) { animation-delay: .45s;  }
.sound-wave span:nth-child(6) { animation-delay: .25s;  }
.sound-wave span:nth-child(7) { animation-delay: .55s;  }
.sound-wave span:nth-child(8) { animation-delay: .05s;  }
@keyframes wave { 0%, 100% { transform: scaleY(.25); } 50% { transform: scaleY(1); } }

/* ==========================================================================
   面包屑
   ========================================================================== */
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; font-size: 15.5px; color: var(--c-text-faint); padding: var(--sp-3) 0; }
.breadcrumb a { color: var(--c-text-dim); }
.breadcrumb a:hover { color: var(--c-gold); }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: 8px; color: var(--c-text-faint); }
.section-light .breadcrumb { color: var(--c-ink-dim); }
.section-light .breadcrumb a { color: var(--c-ink-dim); }

/* ==========================================================================
   文章排版（资讯/科普正文）
   ========================================================================== */
.article { max-width: 840px; margin: 0 auto; font-size: 19px; }
.article h2 { margin: var(--sp-6) 0 var(--sp-3); padding-left: 16px; border-left: 3px solid var(--c-gold); font-size: clamp(22px, 2.6vw, 30px); }
.article h3 { margin: var(--sp-5) 0 var(--sp-2); font-size: 23px; }
.article p { margin-bottom: var(--sp-3); color: inherit; }
.article ul, .article ol { margin: 0 0 var(--sp-3) 1.4em; }
.article ul { list-style: disc; }
.article ol { list-style: decimal; }
.article li { margin-bottom: 8px; }
.article img { border-radius: var(--radius); margin: var(--sp-4) 0; }
.article blockquote {
  margin: var(--sp-4) 0; padding: var(--sp-3) var(--sp-4);
  border-left: 3px solid var(--c-green);
  background: rgba(45, 106, 79, .1); border-radius: 0 var(--radius) var(--radius) 0;
}
.article table { width: 100%; border-collapse: collapse; margin: var(--sp-4) 0; font-size: 17px; }
.article th, .article td { border: 1px solid var(--c-border); padding: 12px 16px; text-align: left; }
.article th { color: var(--c-gold); font-weight: 700; }
.article td[data-n], .article .mono { font-family: var(--font-mono); }

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer { background: #071222; border-top: 1px solid var(--c-border); padding: var(--sp-6) 0 var(--sp-4); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: var(--sp-5); margin-bottom: var(--sp-5); }
.footer-brand img { height: 44px; margin-bottom: var(--sp-3); }
.footer-brand p { font-size: 15px; color: var(--c-text-dim); max-width: 300px; }
.footer-col h4 { font-size: 15px; color: var(--c-gold); margin-bottom: var(--sp-3); letter-spacing: .18em; }
.footer-col a { display: block; padding: 7px 0; font-size: 16px; color: var(--c-text-dim); }
.footer-col a:hover { color: var(--c-gold); opacity: 1; }
.footer-qr { display: flex; gap: var(--sp-3); margin-top: var(--sp-3); }
.footer-qr figure { text-align: center; font-size: 13.5px; color: var(--c-text-faint); }
.footer-qr img { width: 88px; height: 88px; border-radius: var(--radius-s); margin-bottom: 6px; }
.footer-bottom {
  border-top: 1px solid var(--c-border); padding-top: var(--sp-3);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
  font-size: 14.5px; color: var(--c-text-faint);
}

/* ==========================================================================
   滚动渐入 [data-reveal]（GSAP ScrollTrigger 驱动，JS 失效时内容仍可见）
   可选修饰：data-reveal="left|right|zoom"（默认上移），data-reveal-delay="0.15"
   ========================================================================== */
.js [data-reveal] { opacity: 0; transform: translateY(44px); }
.js [data-reveal="left"]  { transform: translateX(-44px); }
.js [data-reveal="right"] { transform: translateX(44px); }
.js [data-reveal="zoom"]  { transform: scale(.92); }

/* ==========================================================================
   首页专用：10 屏长滚动 + 右侧进度圆点
   ========================================================================== */
/* 长滚动屏：首屏与收尾屏整屏居中，中间屏按内容自然呼吸，不再强制等高 */
.screen { display: block; padding: calc(var(--header-h) + 88px) 0 112px; position: relative; overflow: hidden; }
.screen#hero, .screen#cta { display: flex; align-items: center; min-height: 100vh; padding: calc(var(--header-h) + 40px) 0 var(--sp-7); }
.screen .container { position: relative; z-index: 2; }
.screen-bg { position: absolute; inset: 0; z-index: 0; }
.screen-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .6; }
.screen-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,26,47,.52), rgba(10,26,47,.78)); }

/* 右侧进度圆点（JS 根据 section[data-screen] 自动生成） */
.scroll-dots { position: fixed; right: 22px; top: 50%; transform: translateY(-50%); z-index: 800; display: flex; flex-direction: column; gap: 14px; }
.scroll-dots button { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, .25); transition: all .3s var(--ease); position: relative; }
.scroll-dots button:hover { background: var(--c-gold); }
.scroll-dots button.is-active { background: var(--c-gold); transform: scale(1.5); box-shadow: 0 0 0 5px rgba(201, 169, 97, .18); }

/* 屏1 英雄区 */
.hero { text-align: center; }
.hero-title { font-size: 16px; letter-spacing: .34em; text-indent: .34em; color: var(--c-gold); font-weight: 400; margin-bottom: var(--sp-3); }
.hero-slogan { font-family: var(--font-display); font-size: clamp(52px, 8vw, 116px); font-weight: 500; line-height: 1.16; letter-spacing: .01em; }
.hero-sub { margin: var(--sp-4) auto 0; font-size: clamp(18px, 1.8vw, 22px); line-height: 2.0; color: var(--c-text-dim); max-width: 720px; }
.hero-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: var(--sp-5); }
.hero-marks { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: var(--sp-6); font-size: 15.5px; letter-spacing: .12em; color: var(--c-text-dim); }
.hero-marks li { display: flex; align-items: center; gap: 10px; }
.hero-marks li:not(:last-child)::after { content: "·"; color: var(--c-gold); margin-left: 10px; }
.hero-nail { position: absolute; right: 32px; bottom: 32px; font-size: 15px; color: var(--c-text-faint); z-index: 2; }
.scroll-hint { position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%); z-index: 2; color: var(--c-text-faint); font-size: 13.5px; letter-spacing: .3em; text-align: center; }
.scroll-hint::after { content: ""; display: block; width: 1px; height: 44px; margin: 10px auto 0; background: linear-gradient(var(--c-gold), transparent); animation: drip 1.8s var(--ease) infinite; }
@keyframes drip { 0% { transform: scaleY(0); transform-origin: top; } 55% { transform: scaleY(1); transform-origin: top; } 56% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* 屏4 产品左右分屏 */
.product-split { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-4); }
.product-card { text-align: center; }
.product-card .p-nick { font-size: 14.5px; letter-spacing: .22em; color: var(--c-gold); margin-bottom: var(--sp-1); }
.product-card .p-img { padding: var(--sp-4) var(--sp-4) 0; }
.product-card .p-lines { margin: var(--sp-3) 0; color: var(--c-text-dim); font-size: 17px; }
.common-bar {
  margin-top: var(--sp-4); text-align: center;
  border: 1px solid var(--c-gold-dim); border-radius: 999px;
  padding: 13px 28px; font-size: 15px; letter-spacing: .06em; color: var(--c-gold);
}

/* 认证 logo 墙：细线网格徽章，去掉一格格卡片描边 */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--c-border-light); border: 1px solid var(--c-border-light); border-radius: var(--radius-l); overflow: hidden; }
.cert-item { text-align: center; padding: var(--sp-4) var(--sp-2); background: #fff; transition: background .3s; }
.cert-item:hover { background: #FAF8F4; }
.cert-item img { width: 64px; height: 64px; object-fit: contain; margin: 0 auto 10px; }
.cert-item span { font-size: 15px; color: var(--c-ink-dim); }

/* ==========================================================================
   响应式：1200 / 992 / 768 / 480
   ========================================================================== */
@media (max-width: 1200px) {
  .ring-grid { grid-template-columns: repeat(4, 1fr); gap: var(--sp-3); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: var(--sp-4); }
}

@media (max-width: 992px) {
  .nav-desktop { display: none; }
  .nav-toggle { display: block; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .ring-grid { grid-template-columns: repeat(2, 1fr); }
  .sound-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(4, 1fr); }
  .product-split { grid-template-columns: 1fr; }
  .quad-center { position: static; transform: none; margin: var(--sp-3) auto; order: 9; }
  .quad-grid { display: flex; flex-direction: column; }
  .timeline-track { grid-template-columns: repeat(2, 1fr); row-gap: var(--sp-5); }
  .timeline::before { display: none; }
  .scroll-dots { right: 10px; }
}

@media (max-width: 768px) {
  .section { padding: var(--sp-6) 0; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-4); }
  .footer-bottom { justify-content: center; text-align: center; }
  .hero-nail { display: none; }
  .screen { min-height: auto; padding-top: calc(var(--header-h) + 24px); }
  .screen:first-of-type { min-height: 100vh; }
}

@media (max-width: 480px) {
  .grid-4, .ring-grid, .sound-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .btn { padding: 14px 28px; font-size: 16px; }
  .common-bar { border-radius: var(--radius); letter-spacing: .04em; }
  .scroll-dots { display: none; }
}

/* 减少动态偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .js [data-reveal] { opacity: 1; transform: none; }
}

/* ==========================================================================
   内页页头横幅（page-banner）：模板图 + 深蓝遮罩 + 白字
   用法：<section class="section page-banner" style="background-image:url(../assets/img/banner-xxx.jpg)">
   ========================================================================== */
.page-banner { position: relative; background-color: var(--c-navy); background-size: cover; background-position: center; color: #fff; overflow: hidden; }
.page-banner::before { content: ""; position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(180deg, rgba(10, 26, 47, .62) 0%, rgba(10, 26, 47, .82) 100%); }
.page-banner > * { position: relative; z-index: 1; }
.page-banner h1, .page-banner h2, .page-banner h3, .page-banner h4 { color: #fff; }
.page-banner .lead { color: rgba(255, 255, 255, .78); }
.page-banner .kicker { color: var(--c-gold); }
.page-banner .breadcrumb, .page-banner .breadcrumb a { color: rgba(255, 255, 255, .72); }
.page-banner .breadcrumb li+li::before { color: rgba(255, 255, 255, .4); }
.page-banner .nail { color: var(--c-gold); }
.page-banner .nail small { color: rgba(255, 255, 255, .55); }

/* ==========================================================================
   资讯中心 / 文章页 / 归档页补充样式（照抄自静态站 news 页内联 <style>）
   ========================================================================== */
.page-head { padding: calc(var(--header-h) + var(--sp-6)) 0 var(--sp-4); }
.news-card { display: block; color: inherit; }
.news-card h3 { margin-bottom: 0; }
.news-tag {
  display: inline-block; font-size: 14.5px; letter-spacing: 1px;
  color: var(--c-gold); border: 1px solid var(--c-gold-dim);
  border-radius: 999px; padding: 3px 14px; margin-bottom: 14px;
}
.news-date { color: var(--c-text-faint); font-size: 14.5px; margin: 0 0 6px; }
.news-excerpt { color: var(--c-text-dim); font-size: 16.5px; margin: 12px 0 16px; }
.news-more { color: var(--c-gold); font-size: 16px; }
.news-more .arrow { display: inline-block; transition: transform .3s var(--ease); }
.news-card:hover .news-more .arrow { transform: translateX(4px); }
/* 「即将发布」占位卡 */
.card-coming { position: relative; }
.card-coming .card-img { position: relative; }
.card-coming .card-img img { filter: grayscale(.5) brightness(.65); }
.coming-badge {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  font-size: 14.5px; letter-spacing: 1px; color: var(--c-gold);
  background: rgba(10, 26, 47, .82); border: 1px solid var(--c-gold-dim);
  border-radius: 999px; padding: 4px 14px;
}
.card-coming p { color: var(--c-text-faint); font-size: 16px; margin-top: 10px; }
/* 文章页 */
.article-meta { font-size: 16px; color: var(--c-text-faint); margin-top: 16px; }
.article a { color: var(--c-gold); text-decoration: underline; text-underline-offset: 3px; }
.article a:hover { color: var(--c-gold); opacity: .8; }
.article td[data-n] { text-align: right; }
.article-source { font-size: 15.5px; color: var(--c-text-faint); margin-top: -8px; }
/* 分页（the_posts_pagination） */
.pagination { margin-top: var(--sp-5); }
.pagination .nav-links { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.pagination .page-numbers {
  display: inline-block; padding: 8px 16px; border: 1px solid var(--c-gold-dim);
  border-radius: 999px; color: var(--c-text-dim); font-size: 15.5px;
}
.pagination .page-numbers.current { color: var(--c-gold); border-color: var(--c-gold); }
.pagination a.page-numbers:hover { color: var(--c-gold); border-color: var(--c-gold); }
