/*
Theme Name: TG号商城
Author: 寒霜
Author URI: https://tumuda.com/
Description: 面向 TG 号类数字商品的 WordPress 主题。内置 SEO 结构化数据（OnlineStore / Product / FAQPage / BreadcrumbList）、话题簇服务页模板、E-E-A-T 内容模块与移动端全链路转化组件。
Text Domain: tg-shop
Tags: e-commerce, seo, responsive-layout, custom-logo, custom-menu, featured-images, translation-ready
*/

/* ============================================================
   Design tokens
   ============================================================ */
:root{
  --c-primary:#2AABEE;
  --c-primary-2:#229ED9;
  --c-primary-ink:#0B6BA8;
  --c-ink:#0E1B2B;
  --c-body:#3C4A5C;
  --c-muted:#6B7C92;
  --c-line:#E2ECF5;
  --c-bg:#F4FAFF;
  --c-white:#ffffff;
  --c-accent:#1FC48B;
  --c-accent-ink:#0E8A60;
  --c-warn:#F5A623;
  --c-dark:#0A1626;
  --radius-s:10px;
  --radius:16px;
  --radius-l:24px;
  --shadow-s:0 2px 10px rgba(16,44,74,.06);
  --shadow:0 14px 40px rgba(16,44,74,.10);
  --shadow-l:0 28px 70px rgba(16,44,74,.16);
  --maxw:1180px;
  --sp:clamp(44px,6vw,84px);
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
}

/* ============================================================
   Reset / base
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--c-body);background:var(--c-white);
  line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary-ink);text-decoration:none}
a:hover{color:var(--c-primary)}
h1,h2,h3,h4{color:var(--c-ink);line-height:1.28;margin:0 0 .5em;font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(28px,4.4vw,46px)}
h2{font-size:clamp(23px,3vw,34px)}
h3{font-size:clamp(18px,2vw,22px)}
p{margin:0 0 1em}
ul{margin:0 0 1em;padding-left:1.2em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.screen-reader-text{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.sec{padding:var(--sp) 0}
.sec--tint{background:var(--c-bg)}
.sec-head{max-width:760px;margin:0 auto 40px;text-align:center}
.sec-head .eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--c-primary-ink);background:#E7F4FD;border-radius:999px;padding:6px 14px;margin-bottom:14px}
.sec-head p{color:var(--c-muted);margin:0}
.lead{font-size:clamp(16px,1.6vw,18px);color:var(--c-muted)}

/* ============================================================
   Buttons
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:16px;line-height:1;
  padding:15px 26px;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:3px solid #9AD4F5;outline-offset:2px}
.btn--primary{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));color:#fff;box-shadow:0 12px 26px rgba(42,171,238,.34)}
.btn--primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 34px rgba(42,171,238,.42)}
.btn--ghost{background:#fff;color:var(--c-ink);border-color:var(--c-line)}
.btn--ghost:hover{color:var(--c-primary-ink);border-color:#BFE1F5;transform:translateY(-2px)}
.btn--accent{background:var(--c-accent);color:#fff;box-shadow:0 12px 26px rgba(31,196,139,.32)}
.btn--accent:hover{color:#fff;transform:translateY(-2px)}
.btn--block{width:100%}
.btn--lg{padding:17px 32px;font-size:17px}

/* ============================================================
   Header / nav
   ============================================================ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:saturate(150%) blur(10px);border-bottom:1px solid var(--c-line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:var(--shadow-s)}
.topbar{background:linear-gradient(90deg,var(--c-primary-ink),var(--c-primary-2));color:#eaf7ff;font-size:13.5px}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;flex-wrap:wrap}
.topbar strong{color:#fff}
.topbar a{color:#eaf7ff;text-decoration:underline;text-underline-offset:3px}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:70px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:20px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand__logo{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));display:grid;place-items:center;color:#fff;box-shadow:0 8px 18px rgba(42,171,238,.35)}
.brand__tag{font-size:11px;font-weight:600;color:var(--c-muted);letter-spacing:.08em}
.nav__menu{display:flex;align-items:center;gap:6px;list-style:none;margin:0;padding:0}
.nav__menu a{display:block;padding:9px 14px;border-radius:999px;color:var(--c-body);font-weight:600;font-size:15px}
.nav__menu a:hover{background:#EAF5FD;color:var(--c-primary-ink)}
.nav__menu .current-menu-item > a{background:#EAF5FD;color:var(--c-primary-ink)}
.nav__cta{display:flex;align-items:center;gap:10px}
.nav__toggle{display:none;background:#fff;border:1px solid var(--c-line);border-radius:10px;width:44px;height:44px;cursor:pointer;color:var(--c-ink)}
.nav__toggle svg{width:22px;height:22px}
/* 移动端左侧抽屉。桌面端 display:contents 让 nav 容器“透明”，
   菜单仍作为 .nav 的横向子项参与布局，不做任何结构调整。 */
.nav-drawer{display:contents}
.nav-scrim,.nav-drawer__head,.nav-drawer__tip,.nav-drawer__foot{display:none}

@media (max-width:980px){
  /* backdrop-filter 会为 fixed 子元素生成包含块，移动端必须移除，
     否则抽屉会被锁在 header 盒子内，无法贴合视口。 */
  .site-header{background:#fff;backdrop-filter:none;-webkit-backdrop-filter:none}

  .nav-scrim{
    display:block;position:fixed;inset:0;z-index:85;
    background:rgba(10,22,38,.42);
    opacity:0;visibility:hidden;
    transition:opacity .28s ease,visibility 0s linear .28s;
  }
  .nav-scrim.is-open{opacity:1;visibility:visible;transition:opacity .28s ease}

  .nav-drawer{
    display:flex;flex-direction:column;
    position:fixed;top:0;left:0;bottom:0;z-index:90;
    width:min(306px,86vw);
    background:#fff;border-radius:0 22px 22px 0;
    box-shadow:24px 0 64px rgba(16,44,74,.20);
    transform:translateX(-101%);visibility:hidden;
    transition:transform .3s cubic-bezier(.22,.61,.36,1),visibility 0s linear .3s;
  }
  .nav-drawer.is-open{
    transform:none;visibility:visible;
    transition:transform .3s cubic-bezier(.22,.61,.36,1);
  }

  .nav-drawer__head{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    flex:0 0 auto;padding:16px 14px 14px 18px;
    border-bottom:1px solid var(--c-line);
  }
  .nav-drawer__brand{display:flex;align-items:center;gap:10px;min-width:0}
  .nav-drawer__brand .brand__logo{width:34px;height:34px;border-radius:10px;flex:0 0 auto}
  .nav-drawer__meta{min-width:0}
  .nav-drawer__meta b{display:block;font-size:15px;line-height:1.35;color:var(--c-ink);font-weight:800}
  .nav-drawer__meta span{display:block;font-size:10.5px;line-height:1.45;color:var(--c-muted);letter-spacing:.05em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

  .nav-drawer__close{
    flex:0 0 auto;width:40px;height:40px;display:grid;place-items:center;
    border:0;border-radius:50%;background:#F1F8FD;color:var(--c-body);
    cursor:pointer;transition:background .18s ease,color .18s ease;
  }
  .nav-drawer__close:hover{background:#E1F0FA;color:var(--c-primary-ink)}
  .nav-drawer__close:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
  .nav-drawer__close svg{width:16px;height:16px}

  .nav__menu{
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    flex:1 1 auto;overflow-y:auto;-webkit-overflow-scrolling:touch;
    margin:0;padding:10px 12px;
    background:linear-gradient(180deg,#fff 0%,#fff 62%,#F9FCFF 100%);
  }
  .nav__menu li{width:100%}
  .nav__menu a{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:14px 14px 14px 16px;border-radius:12px;
    font-size:16px;font-weight:600;color:var(--c-ink);
    transition:background .16s ease,color .16s ease;
  }
  .nav__menu a::after{
    content:"";width:7px;height:7px;flex:0 0 auto;margin-right:3px;
    border-right:1.6px solid #B9CBD9;border-bottom:1.6px solid #B9CBD9;
    transform:rotate(-45deg);
    transition:border-color .16s ease;
  }
  .nav__menu a:hover,.nav__menu .current-menu-item>a{background:#EAF5FD;color:var(--c-primary-ink)}
  .nav__menu a:hover::after,.nav__menu .current-menu-item>a::after{border-color:var(--c-primary)}

  .nav-drawer__tip{
    display:block;flex:0 0 auto;
    margin:0 14px 12px;padding:11px 13px;
    border-radius:12px;background:#F4FAFF;
    box-shadow:inset 0 0 0 1px #E1EFFA;
  }
  .nav-drawer__tip b{display:block;font-size:12.5px;line-height:1.5;color:var(--c-ink);margin-bottom:2px}
  .nav-drawer__tip span{display:block;font-size:11px;line-height:1.6;color:var(--c-muted)}

  .nav-drawer__foot{
    display:block;flex:0 0 auto;
    padding:14px 16px calc(16px + env(safe-area-inset-bottom));
    border-top:1px solid var(--c-line);
    background:#FAFCFE;border-radius:0 0 22px 0;
  }
  .nav-drawer__foot .btn{display:flex;width:100%;padding:14px 20px}
  .nav-drawer__note{
    margin:9px 0 0;font-size:11px;line-height:1.5;
    color:var(--c-muted);text-align:center;letter-spacing:.02em;
  }

  .nav__toggle{display:grid;place-items:center;z-index:80}
  .nav__cta .btn{display:none}
}

@media (max-width:980px) and (prefers-reduced-motion:reduce){
  .nav-drawer,.nav-scrim,.nav-drawer.is-open,.nav-scrim.is-open{transition:none}
}

/* ============================================================
   Hero
   ============================================================ */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(1100px 520px at 82% -10%,#DDF1FE 0%,rgba(221,241,254,0) 60%),
  radial-gradient(760px 460px at 6% 0%,#EAF7FF 0%,rgba(234,247,255,0) 55%),
  linear-gradient(180deg,#FBFDFF, #F4FAFF)}
.hero__grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center;padding:clamp(46px,7vw,86px) 0 var(--sp)}
@media (max-width:900px){.hero__grid{grid-template-columns:1fr;gap:36px;padding-top:40px}}
.pill{display:inline-flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--c-line);box-shadow:var(--shadow-s);border-radius:999px;padding:8px 15px;font-size:13.5px;font-weight:700;color:var(--c-ink)}
.dot{width:9px;height:9px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 4px rgba(31,196,139,.18);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
.hero h1{margin:20px 0 16px}
.hero h1 em{font-style:normal;color:var(--c-primary-ink);background:linear-gradient(180deg,transparent 62%,#CFEAFA 62%)}
.hero__sub{font-size:clamp(16px,1.7vw,19px);color:var(--c-muted);max-width:560px}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0 22px}
.hero__points{display:flex;gap:22px;flex-wrap:wrap;list-style:none;padding:0;margin:0;font-size:14.5px;color:var(--c-body);font-weight:600}
.hero__points li{display:flex;align-items:center;gap:8px}
.hero__points svg{width:18px;height:18px;color:var(--c-accent);flex:none}
.hero__stats{display:flex;gap:28px;flex-wrap:wrap;margin-top:30px;padding-top:24px;border-top:1px dashed var(--c-line)}
.hero__stats b{display:block;font-size:clamp(22px,2.6vw,30px);color:var(--c-ink);line-height:1.1}
.hero__stats span{font-size:13px;color:var(--c-muted)}

/* phone mock */
.phone{position:relative;margin:0 auto;width:min(330px,86vw)}
.phone__shell{background:#0A1626;border-radius:40px;padding:12px;box-shadow:var(--shadow-l)}
.phone__screen{background:linear-gradient(180deg,#F7FBFF,#EAF5FD);border-radius:30px;padding:22px 18px;min-height:470px;display:flex;flex-direction:column;gap:14px}
.phone__bubble{background:#fff;border-radius:14px;padding:12px 14px;box-shadow:var(--shadow-s);font-size:13px;color:var(--c-body)}
.phone__bubble--out{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));color:#fff;align-self:flex-end;max-width:88%}
.phone__bubble strong{color:inherit}
.phone__card{margin-top:auto;background:#fff;border-radius:16px;padding:16px;box-shadow:var(--shadow)}
.phone__row{display:flex;justify-content:space-between;gap:10px;font-size:13px;padding:7px 0;border-bottom:1px dashed var(--c-line)}
.phone__row:last-of-type{border-bottom:0}
.phone__row span{color:var(--c-muted)}
.phone__row b{color:var(--c-ink)}
.phone__ok{display:inline-flex;align-items:center;gap:7px;margin-top:8px;color:var(--c-accent-ink);font-weight:700;font-size:13px}

/* ============================================================
   Trust bar
   ============================================================ */
.trust{background:var(--c-dark);color:#C9D8E6}
.trust .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:20px}
.trust__item{display:flex;align-items:center;gap:11px;font-size:14.5px;font-weight:600;color:#E4EEF7;justify-content:center}
.trust__item svg{width:20px;height:20px;color:var(--c-primary)}
@media (max-width:760px){.trust .wrap{grid-template-columns:repeat(2,1fr);gap:14px;padding:22px 20px}}

/* ============================================================
   Cards / grid
   ============================================================ */
.grid{display:grid;gap:22px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
@media (max-width:960px){.grid--3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.grid--3,.grid--2{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-s);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#CFE7F7}
.card__ico{width:50px;height:50px;border-radius:14px;background:#EAF5FD;color:var(--c-primary-ink);display:grid;place-items:center;margin-bottom:16px}
.card__ico svg{width:26px;height:26px}
.card h3{margin-bottom:8px;font-size:19px}
.card p{margin:0;color:var(--c-muted);font-size:15px}

/* ============================================================
   Plans / pricing
   ============================================================ */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
@media (max-width:960px){.plans{grid-template-columns:1fr;max-width:520px;margin:0 auto}}
.plan{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-l);padding:30px;box-shadow:var(--shadow-s);display:flex;flex-direction:column}
.plan--hot{border-color:#9AD4F5;box-shadow:var(--shadow);transform:translateY(-6px)}
@media (max-width:960px){.plan--hot{transform:none}}
.plan__flag{position:absolute;top:-13px;right:22px;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));color:#fff;font-size:12.5px;font-weight:700;padding:6px 14px;border-radius:999px;box-shadow:0 10px 20px rgba(42,171,238,.34)}
.plan__name{font-size:19px;font-weight:800;color:var(--c-ink);margin-bottom:4px}
.plan__desc{font-size:14px;color:var(--c-muted);margin-bottom:16px;min-height:42px}
.plan__price{font-size:38px;font-weight:800;color:var(--c-ink);line-height:1}
.plan__price small{font-size:15px;color:var(--c-muted);font-weight:600}
.plan__list{list-style:none;padding:0;margin:20px 0 24px;display:grid;gap:11px}
.plan__list li{display:flex;gap:10px;font-size:14.5px;align-items:flex-start}
.plan__list svg{width:18px;height:18px;color:var(--c-accent);flex:none;margin-top:3px}
.plan .btn{margin-top:auto}

/* ============================================================
   Steps
   ============================================================ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
@media (max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}
.step{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-s)}
.step__no{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:14px;box-shadow:0 8px 16px rgba(42,171,238,.3)}
.step h3{font-size:17px;margin-bottom:6px}
.step p{margin:0;font-size:14.5px;color:var(--c-muted)}
.step::after{content:"";position:absolute;top:44px;right:-11px;width:22px;border-top:2px dashed #C7E2F4}
.step:last-child::after{display:none}
@media (max-width:900px){.step::after{display:none}}

/* ============================================================
   Cluster（话题簇）
   ============================================================ */
.cluster{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media (max-width:1000px){.cluster{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.cluster{grid-template-columns:1fr}}
.cluster__card{display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-s);transition:.2s ease}
.cluster__card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#CFE7F7}
.cluster__card h3{font-size:18px;margin-bottom:8px}
.cluster__card p{font-size:14px;color:var(--c-muted);margin:0 0 14px}
.cluster__more{font-weight:700;font-size:14px;color:var(--c-primary-ink);display:inline-flex;align-items:center;gap:7px}
.cluster__more svg{width:16px;height:16px;transition:transform .2s}
.cluster__card:hover .cluster__more svg{transform:translateX(3px)}

/* ============================================================
   FAQ
   ============================================================ */
.faq{max-width:820px;margin:0 auto;display:grid;gap:12px}
.faq__item{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-s);overflow:hidden;box-shadow:var(--shadow-s)}
.faq__q{width:100%;text-align:left;background:none;border:0;padding:19px 22px;font:inherit;font-weight:700;font-size:16.5px;color:var(--c-ink);cursor:pointer;display:flex;justify-content:space-between;gap:14px;align-items:center}
.faq__q svg{width:20px;height:20px;color:var(--c-primary);flex:none;transition:transform .25s}
.faq__item.is-open .faq__q svg{transform:rotate(45deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--c-muted)}
.faq__a p{padding:0 22px 20px;margin:0}
.faq__item.is-open .faq__a{max-height:420px}

/* ============================================================
   Reviews
   ============================================================ */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:900px){.reviews{grid-template-columns:1fr}}
.review{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-s)}
.review__stars{color:var(--c-warn);font-size:15px;letter-spacing:2px;margin-bottom:10px}
.review p{font-size:15px;color:var(--c-body)}
.review__who{display:flex;align-items:center;gap:12px;margin-top:16px}
.review__avatar{width:40px;height:40px;border-radius:50%;background:#EAF5FD;color:var(--c-primary-ink);display:grid;place-items:center;font-weight:800}
.review__who b{display:block;font-size:14.5px;color:var(--c-ink)}
.review__who span{font-size:12.5px;color:var(--c-muted)}

/* ============================================================
   CTA band
   ============================================================ */
.cta-band{background:linear-gradient(135deg,var(--c-primary-ink),var(--c-primary-2));border-radius:var(--radius-l);padding:clamp(32px,5vw,52px);display:grid;grid-template-columns:1.4fr auto;gap:28px;align-items:center;box-shadow:var(--shadow-l);color:#EAF7FF}
@media (max-width:820px){.cta-band{grid-template-columns:1fr;text-align:center;justify-items:center}}
.cta-band h2{color:#fff;margin:0 0 8px}
.cta-band p{color:#D6ECFA;margin:0}
.cta-band .btn--ghost{background:#fff;border-color:transparent}

/* ============================================================
   Service page（话题簇子页）
   ============================================================ */
.page-hero{background:linear-gradient(180deg,#F4FAFF,#ffffff);border-bottom:1px solid var(--c-line);padding:clamp(36px,5vw,60px) 0}
.crumbs{font-size:13.5px;color:var(--c-muted);margin-bottom:14px}
.crumbs a{color:var(--c-muted)}
.crumbs a:hover{color:var(--c-primary-ink)}
.crumbs span{margin:0 7px;opacity:.5}
.prose{max-width:820px}
.prose h2{margin-top:1.6em}
.prose h3{margin-top:1.3em}
.prose ul li{margin-bottom:8px}
.prose table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:15px}
.prose th,.prose td{border:1px solid var(--c-line);padding:11px 14px;text-align:left}
.prose th{background:#F4FAFF;color:var(--c-ink);font-weight:700}
.prose blockquote{margin:1.2em 0;padding:14px 20px;border-left:4px solid var(--c-primary);background:#F4FAFF;border-radius:0 var(--radius-s) var(--radius-s) 0;color:var(--c-body)}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:start}
@media (max-width:980px){.layout{grid-template-columns:1fr}}

/* ============================================================
   Sidebar widget
   ============================================================ */
.widget{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-s);margin-bottom:22px}
.widget__title{font-size:16px;font-weight:800;color:var(--c-ink);margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--c-line)}
.widget ul{list-style:none;padding:0;margin:0;display:grid;gap:11px}
.widget ul li a{font-size:14.5px;color:var(--c-body);display:flex;justify-content:space-between;gap:10px}
.widget ul li a:hover{color:var(--c-primary-ink)}

/* ============================================================
   E-E-A-T box
   ============================================================ */
.eeat{margin-top:34px;padding:24px;border:1px solid var(--c-line);border-left:4px solid var(--c-primary);background:#F9FCFF;border-radius:0 var(--radius) var(--radius) 0}
.eeat h3{font-size:16px;margin-bottom:12px}
.eeat dl{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;margin:0 0 14px;font-size:14.5px}
.eeat dt{color:var(--c-muted);white-space:nowrap}
.eeat dd{margin:0;color:var(--c-ink);font-weight:600}
.eeat p{margin:0;font-size:13px;color:var(--c-muted)}
@media (max-width:560px){.eeat dl{grid-template-columns:1fr;gap:2px 0}.eeat dt{margin-top:6px}}

/* ============================================================
   Article list
   ============================================================ */
.posts{display:grid;gap:22px}
.post-card{display:grid;grid-template-columns:200px 1fr;gap:22px;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-s)}
.post-card__thumb{background:linear-gradient(135deg,#EAF5FD,#DDF1FE);min-height:150px}
.post-card__thumb img{width:100%;height:100%;object-fit:cover;min-height:150px}
.post-card__body{padding:22px 24px 22px 0}
@media (max-width:640px){.post-card{grid-template-columns:1fr}.post-card__thumb{min-height:170px}.post-card__body{padding:0 22px 22px}}
.post-card h3{font-size:19px;margin-bottom:8px}
.post-card h3 a{color:var(--c-ink)}
.post-card h3 a:hover{color:var(--c-primary-ink)}
.post-card p{font-size:14.5px;color:var(--c-muted);margin:0 0 12px}
.post-meta{font-size:13px;color:var(--c-muted);display:flex;gap:14px;flex-wrap:wrap}

/* ============================================================
   Footer
   ============================================================ */
.site-footer{background:var(--c-dark);color:#93A9BF;margin-top:var(--sp);padding:var(--sp) 0 0}
.site-footer h3{color:#fff;font-size:16px;margin-bottom:16px}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px}
@media (max-width:900px){.footer__grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.footer__grid{grid-template-columns:1fr}}
.site-footer a{color:#93A9BF}
.site-footer a:hover{color:#fff}
.site-footer ul{list-style:none;padding:0;display:grid;gap:11px;font-size:14.5px}
.footer__brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:19px;margin-bottom:14px}
.footer__brand .brand__logo{width:34px;height:34px;border-radius:10px}
.footer__notice{margin-top:38px;padding:22px 0;border-top:1px solid #1B2B40;font-size:12.5px;line-height:1.7}
.footer__bottom{padding:18px 0;border-top:1px solid #1B2B40;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px}

/* ============================================================
   Mobile sticky bar
   ============================================================ */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:65;display:none;grid-template-columns:auto 1fr;gap:12px;padding:10px 14px;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--c-line);box-shadow:0 -6px 24px rgba(16,44,74,.08)}
.mobile-bar .btn{padding:13px 16px;font-size:15px}
.mobile-bar__info{font-size:12px;color:var(--c-muted);line-height:1.35}
.mobile-bar__info b{display:block;color:var(--c-ink);font-size:14px}
@media (max-width:760px){.mobile-bar{display:grid;transition:opacity .24s ease,transform .24s ease}body{padding-bottom:76px}body.nav-open .mobile-bar{opacity:0;transform:translateY(110%);pointer-events:none}}

/* ============================================================
   404
   ============================================================ */
.err{text-align:center;padding:clamp(60px,12vw,120px) 0}
.err__code{font-size:clamp(70px,16vw,130px);font-weight:800;line-height:1;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-ink));-webkit-background-clip:text;background-clip:text;color:transparent}

/* ============================================================
   Reveal animation
   ============================================================ */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}


/* ============================================================
   Guides（首页延伸阅读）
   ============================================================ */
.guides{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.guide{
  display:flex;flex-direction:column;gap:6px;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--radius);
  padding:20px 22px;box-shadow:var(--shadow-s);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.guide:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#CFE6F7}
.guide__meta{font-size:12.5px;color:var(--c-muted);letter-spacing:.01em}
.guide__title{font-size:16.5px;font-weight:700;line-height:1.5;color:var(--c-ink);margin:2px 0 0}
.guide__desc{font-size:13.8px;line-height:1.68;color:var(--c-body)}
@media (max-width:760px){.guides{grid-template-columns:1fr}}

/* 表格在窄屏可横向滚动，不撑破布局 */
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tablewrap table{min-width:560px}
.hero__kicker{margin:-4px 0 14px;font-size:15px;font-weight:700;color:var(--c-primary-ink);letter-spacing:.01em}
@media (max-width:640px){
  .hero__kicker{font-size:13.5px;line-height:1.7}
  .tablewrap{overflow:visible}
  .tablewrap table{min-width:0;display:block;font-size:14px}
  .tablewrap thead{display:none}
  .tablewrap tbody,.tablewrap tr,.tablewrap td{display:block;width:100%}
  .tablewrap tr{border:1px solid var(--c-line);border-radius:12px;margin-bottom:12px;overflow:hidden;background:#fff}
  .tablewrap td{border:0;border-top:1px solid var(--c-line);display:flex;justify-content:space-between;gap:14px;padding:10px 14px}
  .tablewrap tr td:first-child{border-top:0;font-weight:700;background:#F4FAFF;justify-content:flex-start}
  .tablewrap td::before{content:attr(data-label);color:var(--c-muted);font-weight:600;flex:0 0 auto}
  .tablewrap tr td:first-child::before{display:none}
}
.hero h1{text-wrap:balance}
.sec-head h2{text-wrap:balance}
@media (max-width:480px){
  .hero h1{font-size:26px}
}