/* =====================================================================
   横风动漫 — 共享样式表  css/style.css
   风格：二次元 / 追番 · 紫蓝渐变 + 粉色点缀 · 浅色底
   ===================================================================== */

/* ---------- 变量 ---------- */
:root{
  --primary:#6C5CE7;
  --primary-2:#7C5CFF;
  --blue:#3B82F6;
  --cyan:#22D3EE;
  --pink:#FF4D8D;
  --orange:#FF9F43;
  --green:#22C55E;

  --ink:#1E2233;
  --text:#3B4157;
  --muted:#79819C;
  --line:#E8ECF7;
  --bg:#F6F7FC;
  --card:#FFFFFF;

  --grad:linear-gradient(135deg,#7C5CFF 0%,#4A9EFF 55%,#22D3EE 100%);
  --grad-pink:linear-gradient(135deg,#FF4D8D 0%,#7C5CFF 100%);
  --grad-warm:linear-gradient(135deg,#FF9F43 0%,#FF4D8D 100%);

  --shadow-sm:0 4px 14px rgba(38,44,80,.06);
  --shadow:0 12px 32px rgba(38,44,80,.10);
  --shadow-lg:0 26px 60px rgba(38,44,80,.16);
  --r-sm:12px; --r:18px; --r-lg:26px; --r-xl:34px;

  --maxw:1180px;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",
         -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
}

/* ---------- 基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--sans);color:var(--text);background:var(--bg);
  line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--pink)}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;margin:0 0 .5em;font-weight:800;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.35em}
li{margin:.35em 0}
::selection{background:rgba(124,92,255,.22)}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 28px;border-radius:999px;font-weight:700;font-size:15.5px;
  border:0;cursor:pointer;white-space:nowrap;transition:.25s;font-family:inherit;
  position:relative;overflow:hidden;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px rgba(108,92,231,.36)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 34px rgba(108,92,231,.46)}
.btn-pink{background:var(--grad-pink);color:#fff;box-shadow:0 12px 26px rgba(255,77,141,.36)}
.btn-pink:hover{color:#fff;transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1.5px solid rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.26);color:#fff}
.btn-outline{background:#fff;color:var(--primary);border:1.5px solid var(--line);box-shadow:var(--shadow-sm)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-lg{padding:17px 40px;font-size:17px}
.btn-sm{padding:9px 20px;font-size:14px}
.btn .ico{width:18px;height:18px;flex:0 0 auto}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.86);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{display:flex;align-items:center;gap:18px;height:70px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand img{width:42px;height:42px;border-radius:13px;box-shadow:0 6px 16px rgba(108,92,231,.32)}
.brand .brand-name{font-size:20px;font-weight:900;color:var(--ink);letter-spacing:.5px;line-height:1}
.brand .brand-sub{display:block;font-size:10.5px;color:var(--muted);font-weight:600;letter-spacing:2px;margin-top:3px}
.brand:hover .brand-name{color:var(--primary)}

.nav{margin-left:auto;display:flex;align-items:center;gap:2px}
.nav a{
  display:block;padding:9px 15px;border-radius:10px;font-size:15px;
  font-weight:600;color:var(--text);
}
.nav a:hover{background:rgba(108,92,231,.09);color:var(--primary)}
.nav a.active{color:var(--primary);background:rgba(108,92,231,.12)}
.header-cta{margin-left:8px}

.nav-toggle{
  display:none;margin-left:auto;width:46px;height:46px;border-radius:12px;
  border:1px solid var(--line);background:#fff;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);margin:4px auto;border-radius:2px;transition:.25s}
.nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--grad);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 82% 18%,rgba(255,255,255,.28),transparent 42%),
    radial-gradient(circle at 12% 88%,rgba(255,77,141,.34),transparent 46%);
}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;
  gap:40px;align-items:center;padding-top:66px;padding-bottom:76px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.34);
  font-size:13.5px;font-weight:700;margin-bottom:22px;backdrop-filter:blur(4px);
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#7CFFB2;box-shadow:0 0 0 0 rgba(124,255,178,.7);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(124,255,178,.7)}70%{box-shadow:0 0 0 9px rgba(124,255,178,0)}100%{box-shadow:0 0 0 0 rgba(124,255,178,0)}}
.hero h1{
  color:#fff;font-size:clamp(30px,4.4vw,50px);margin:0 0 18px;letter-spacing:-.02em;
  text-shadow:0 4px 22px rgba(30,20,80,.24);
}
.hero .lead{font-size:17px;color:rgba(255,255,255,.94);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.86)}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.hero-tags span{
  font-size:12.5px;padding:5px 13px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);font-weight:600;
}

/* Hero 右侧手机 */
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;min-height:400px}
.hero-visual .glow{position:absolute;width:330px;height:330px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.42),transparent 68%);filter:blur(6px)}
.phone{
  position:relative;width:252px;border-radius:34px;background:#0E1226;
  padding:9px;box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.28);
}
.phone img{border-radius:26px;display:block;width:100%}
.phone::before{content:"";position:absolute;top:16px;left:50%;transform:translateX(-50%);
  width:66px;height:5px;border-radius:5px;background:rgba(255,255,255,.4);z-index:3}
.float-card{
  position:absolute;background:#fff;border-radius:16px;box-shadow:var(--shadow);
  padding:11px 15px;display:flex;align-items:center;gap:10px;color:var(--ink);
  font-size:13px;font-weight:700;animation:floaty 4.5s ease-in-out infinite;
}
.float-card .fc-ico{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;font-size:16px}
.fc-1{top:36px;left:-6px}
.fc-1 .fc-ico{background:rgba(108,92,231,.14);color:var(--primary)}
.fc-2{bottom:52px;right:-10px;animation-delay:1.6s}
.fc-2 .fc-ico{background:rgba(255,77,141,.14);color:var(--pink)}
.float-card small{display:block;font-weight:600;color:var(--muted);font-size:11px}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-13px)}}

/* ---------- 数据条 ---------- */
.stats-bar{
  background:#fff;border-bottom:1px solid var(--line);
}
.stats-bar .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:26px 22px}
.stat{text-align:center;padding:6px 8px;position:relative}
.stat+.stat::before{content:"";position:absolute;left:0;top:14%;height:72%;width:1px;background:var(--line)}
.stat b{display:block;font-size:clamp(22px,3vw,30px);font-weight:900;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:13px;color:var(--muted);font-weight:600}

/* ---------- 通用区块 ---------- */
.section{padding:74px 0}
.section.alt{background:#fff}
.section-head{max-width:760px;margin:0 auto 46px;text-align:center}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:800;letter-spacing:2px;
  color:var(--primary);text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{font-size:clamp(24px,3.2vw,34px);margin:0 0 14px}
.section-head p{color:var(--muted);font-size:16px;margin:0}

/* ---------- 卖点卡 ---------- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:28px 24px;box-shadow:var(--shadow-sm);transition:.28s;position:relative;overflow:hidden;
}
.feature::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:var(--grad);
  transform:scaleX(0);transform-origin:left;transition:.35s}
.feature:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.feature:hover::before{transform:scaleX(1)}
.feature .fi{width:54px;height:54px;border-radius:16px;display:grid;place-items:center;margin-bottom:16px}
.feature .fi svg{width:27px;height:27px}
.feature h3{font-size:18.5px;margin:0 0 9px}
.feature p{font-size:14.6px;color:var(--muted);margin:0}
.bg-p{background:rgba(108,92,231,.12);color:var(--primary)}
.bg-b{background:rgba(59,130,246,.12);color:var(--blue)}
.bg-c{background:rgba(34,211,238,.14);color:#0891B2}
.bg-k{background:rgba(255,77,141,.12);color:var(--pink)}
.bg-o{background:rgba(255,159,67,.16);color:#E07B13}
.bg-g{background:rgba(34,197,94,.13);color:#16893F}

/* ---------- 截图区 ---------- */
.screens-wrap{position:relative}
.screens{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.screen-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:.3s;
}
.screen-card:hover{transform:translateY(-7px);box-shadow:var(--shadow)}
.screen-card .sc-img{background:linear-gradient(160deg,#EFEFFB,#E4ECFB);padding:18px 18px 0;
  display:flex;justify-content:center;overflow:hidden}
.screen-card .sc-img img{width:100%;max-width:236px;border-radius:16px 16px 0 0;
  box-shadow:0 14px 30px rgba(38,44,80,.18)}
.screen-card .sc-body{padding:16px 20px 20px;text-align:center}
.screen-card h4{font-size:16.5px;margin:0 0 5px}
.screen-card p{font-size:13.6px;color:var(--muted);margin:0}

/* ---------- 深度模块入口 ---------- */
.deep{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.deep-card{
  position:relative;display:block;border-radius:var(--r-lg);padding:30px 28px 28px;color:#fff;
  overflow:hidden;box-shadow:var(--shadow);transition:.3s;min-height:190px;
}
.deep-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);color:#fff}
.deep-card::after{content:"";position:absolute;right:-40px;bottom:-50px;width:170px;height:170px;
  border-radius:50%;background:rgba(255,255,255,.13)}
.dc-1{background:linear-gradient(135deg,#7C5CFF,#4A9EFF)}
.dc-2{background:linear-gradient(135deg,#FF4D8D,#7C5CFF)}
.dc-3{background:linear-gradient(135deg,#FF9F43,#FF4D8D)}
.dc-4{background:linear-gradient(135deg,#22D3EE,#3B82F6)}
.deep-card .dc-tag{font-size:12.5px;font-weight:700;opacity:.9;letter-spacing:1px}
.deep-card h3{color:#fff;font-size:21px;margin:10px 0 8px}
.deep-card p{font-size:14px;color:rgba(255,255,255,.92);margin:0 0 16px;position:relative;z-index:2}
.deep-card .dc-more{font-size:14px;font-weight:700;display:inline-flex;align-items:center;gap:6px}
.deep-card .dc-more .ico{width:16px;height:16px;transition:.25s}
.deep-card:hover .dc-more .ico{transform:translateX(5px)}

/* ---------- 评价 ---------- */
.testi{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:.28s;
}
.testi:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.testi .stars{color:#FFB400;font-size:15px;letter-spacing:2px;margin-bottom:12px}
.testi p{font-size:14.8px;color:var(--text);margin:0 0 20px;flex:1}
.testi .who{display:flex;align-items:center;gap:12px;padding-top:16px;border-top:1px dashed var(--line)}
.testi .av{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  color:#fff;font-weight:800;font-size:17px}
.testi .who b{display:block;font-size:14.5px;color:var(--ink)}
.testi .who small{color:var(--muted);font-size:12.5px}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  margin-bottom:13px;overflow:hidden;transition:.25s}
.faq-item.open{border-color:var(--primary);box-shadow:var(--shadow-sm)}
.faq-q{width:100%;text-align:left;background:none;border:0;cursor:pointer;font-family:inherit;
  padding:19px 22px;font-size:16px;font-weight:700;color:var(--ink);display:flex;
  align-items:center;gap:14px;line-height:1.5}
.faq-q .num{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:rgba(108,92,231,.12);
  color:var(--primary);font-size:13px;display:grid;place-items:center;font-weight:800}
.faq-q .arrow{margin-left:auto;flex:0 0 auto;width:20px;height:20px;transition:.3s;color:var(--muted)}
.faq-item.open .faq-q .arrow{transform:rotate(180deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a .inner{padding:0 22px 22px 62px;font-size:14.8px;color:var(--muted)}
.faq-a .inner p{margin:0 0 .7em}
.faq-a .inner p:last-child{margin:0}
.faq-a .inner a{font-weight:600}

/* ---------- 下载 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);color:#fff;text-align:center;
  background:var(--grad);padding:60px 30px;box-shadow:var(--shadow-lg);
}
.cta-band::before{content:"";position:absolute;top:-70px;right:-50px;width:250px;height:250px;
  border-radius:50%;background:rgba(255,255,255,.14)}
.cta-band::after{content:"";position:absolute;bottom:-90px;left:-60px;width:280px;height:280px;
  border-radius:50%;background:rgba(255,77,141,.28)}
.cta-band>*{position:relative;z-index:2}
.cta-band .cta-ico{width:76px;height:76px;border-radius:22px;margin:0 auto 18px;
  box-shadow:0 14px 30px rgba(20,20,60,.3)}
.cta-band h2{color:#fff;font-size:clamp(23px,3vw,32px);margin:0 0 12px}
.cta-band p{color:rgba(255,255,255,.94);max-width:560px;margin:0 auto 26px;font-size:16px}
.cta-band .hero-note{color:rgba(255,255,255,.86)}

/* ---------- 内页文章 ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;padding:56px 0 52px;background:var(--grad);
}
.page-hero.g2{background:linear-gradient(135deg,#FF4D8D,#7C5CFF)}
.page-hero.g3{background:linear-gradient(135deg,#22D3EE,#3B82F6)}
.page-hero.g4{background:linear-gradient(135deg,#FF9F43,#FF4D8D)}
.page-hero::after{content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 88% 12%,rgba(255,255,255,.24),transparent 46%)}
.page-hero .wrap{position:relative;z-index:2}
.crumb{font-size:13.5px;color:rgba(255,255,255,.85);margin-bottom:14px;font-weight:600}
.crumb a{color:rgba(255,255,255,.92)}
.crumb a:hover{color:#fff;text-decoration:underline}
.page-hero h1{color:#fff;font-size:clamp(26px,3.6vw,40px);margin:0 0 14px;max-width:900px}
.page-hero .sub{font-size:16.5px;color:rgba(255,255,255,.94);max-width:760px;margin:0}
.page-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.page-meta span{font-size:12.5px;padding:5px 14px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);font-weight:600}

.article{padding:60px 0}
.article-layout{display:grid;grid-template-columns:1fr 300px;gap:46px;align-items:start}
.article-body{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px 44px;box-shadow:var(--shadow-sm);min-width:0}
.article-body h2{font-size:24px;margin:42px 0 14px;padding-left:15px;position:relative;scroll-margin-top:88px}
.article-body h2:first-child{margin-top:0}
.article-body h2::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:5px;
  border-radius:5px;background:var(--grad)}
.article-body h3{font-size:19px;margin:28px 0 10px;color:var(--primary)}
.article-body p{font-size:15.6px;color:var(--text)}
.article-body ul,.article-body ol{padding-left:1.5em}
.article-body li{font-size:15.5px;color:var(--text);margin:.5em 0}
.article-body strong{color:var(--ink);font-weight:800}
.article-body a{font-weight:600}
.note{
  border-left:5px solid var(--primary);background:rgba(108,92,231,.07);
  border-radius:0 12px 12px 0;padding:16px 20px;margin:22px 0;font-size:15px;
}
.note.warn{border-color:var(--orange);background:rgba(255,159,67,.10)}
.note.tip{border-color:var(--green);background:rgba(34,197,94,.09)}
.note b{color:var(--ink)}

/* 步骤 */
.steps{counter-reset:step;list-style:none;padding:0;margin:24px 0}
.steps>li{position:relative;padding:0 0 4px 60px;margin:0 0 26px;counter-increment:step}
.steps>li::before{content:counter(step);position:absolute;left:0;top:0;width:40px;height:40px;
  border-radius:13px;background:var(--grad);color:#fff;font-weight:800;display:grid;
  place-items:center;font-size:17px;box-shadow:0 8px 18px rgba(108,92,231,.3)}
.steps>li::after{content:"";position:absolute;left:19px;top:44px;bottom:-22px;width:2px;
  background:var(--line)}
.steps>li:last-child::after{display:none}
.steps>li h3{margin:4px 0 6px;font-size:18px;color:var(--ink)}
.steps>li p{margin:0;font-size:15.2px;color:var(--muted)}

/* 侧栏 */
.sidebar{position:sticky;top:92px;display:flex;flex-direction:column;gap:22px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:24px;box-shadow:var(--shadow-sm)}
.side-card h3{font-size:16.5px;margin:0 0 14px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.side-card ul{list-style:none;padding:0;margin:0}
.side-card li{margin:0}
.side-card li a{display:block;padding:9px 0;font-size:14.6px;color:var(--text);
  border-bottom:1px dashed var(--line);transition:.2s}
.side-card li:last-child a{border-bottom:0}
.side-card li a:hover{color:var(--primary);padding-left:7px}
.side-card dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:8px 14px;font-size:14px}
.side-card dt{color:var(--muted);font-weight:600}
.side-card dd{margin:0;color:var(--ink);font-weight:700;text-align:right}
.side-cta{background:var(--grad);color:#fff;border:0;text-align:center}
.side-cta h3{color:#fff;border-color:rgba(255,255,255,.3)}
.side-cta p{font-size:14px;color:rgba(255,255,255,.92);margin:0 0 16px}

/* 相关推荐 */
.related{margin-top:34px;border-top:1px solid var(--line);padding-top:28px}
.related h2{padding-left:0;font-size:20px}
.related h2::before{display:none}
.rel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.rel-card{display:block;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:18px 20px;background:#FBFBFE;transition:.25s}
.rel-card:hover{border-color:var(--primary);background:#fff;transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.rel-card b{display:block;color:var(--ink);font-size:15.5px;margin-bottom:5px}
.rel-card span{font-size:13.4px;color:var(--muted)}

/* 内联 CTA */
.inline-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  background:linear-gradient(135deg,rgba(124,92,255,.10),rgba(34,211,238,.12));
  border:1px solid var(--line);border-radius:var(--r);padding:22px 26px;margin:30px 0;
}
.inline-cta b{font-size:16.5px;color:var(--ink);display:block}
.inline-cta small{color:var(--muted);font-size:13.6px}

/* ---------- 页脚 ---------- */
.site-footer{background:#171B30;color:#A9B0CB;padding:56px 0 26px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;padding-bottom:34px;
  border-bottom:1px solid rgba(255,255,255,.1)}
.site-footer .brand .brand-name{color:#fff}
.site-footer .brand .brand-sub{color:#7C86A8}
.site-footer p{margin:16px 0 0;color:#8C95B4;font-size:13.4px;line-height:1.8}
.foot-col h4{color:#fff;font-size:15px;margin:0 0 15px}
.foot-col ul{list-style:none;padding:0;margin:0}
.foot-col li{margin:0 0 9px}
.foot-col a{color:#A9B0CB;font-size:13.8px}
.foot-col a:hover{color:#fff}
.foot-bottom{padding-top:22px;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;align-items:center;color:#7C86A8;font-size:12.8px}
.foot-bottom .disclaimer{max-width:820px;line-height:1.8;color:#8891B0;flex:1 1 100%}
.foot-bottom .disclaimer b{color:#B9C0DC}
.foot-legal{display:flex;gap:18px;flex-wrap:wrap}

/* ---------- 回到顶部 ---------- */
.to-top{position:fixed;right:24px;bottom:28px;width:48px;height:48px;border-radius:50%;
  background:var(--grad);color:#fff;border:0;cursor:pointer;display:grid;place-items:center;
  box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(14px);
  transition:.3s;z-index:80}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top svg{width:22px;height:22px}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .article-layout{grid-template-columns:1fr}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap}
  .sidebar .side-card{flex:1 1 260px}
  .hero .wrap{grid-template-columns:1fr;text-align:center;gap:30px}
  .hero .lead{margin-left:auto;margin-right:auto}
  .hero-actions,.hero-tags{justify-content:center}
  .hero-visual{min-height:340px}
}
@media(max-width:900px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .screens{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .nav-toggle{display:block}
  .nav{
    position:fixed;top:70px;left:0;right:0;flex-direction:column;align-items:stretch;
    background:#fff;border-bottom:1px solid var(--line);padding:12px 18px 20px;
    box-shadow:var(--shadow);transform:translateY(-140%);transition:.32s;gap:2px;margin:0;
    max-height:calc(100vh - 70px);overflow:auto;
  }
  .nav.open{transform:translateY(0)}
  .nav a{padding:13px 16px;font-size:16px}
  .header-cta{display:none}
}
@media(max-width:640px){
  .stats-bar .wrap{grid-template-columns:repeat(2,1fr);gap:18px 6px}
  .stat:nth-child(3)::before{display:none}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .deep{grid-template-columns:1fr}
  .screens{grid-template-columns:1fr;max-width:330px;margin:0 auto}
  .rel-grid{grid-template-columns:1fr}
  .section{padding:54px 0}
  .article-body{padding:26px 20px}
  .article-body h2{font-size:21px}
  .foot-grid{grid-template-columns:1fr}
  .hero-visual .float-card{display:none}
  .cta-band{padding:44px 20px}
  .crumb{font-size:12.5px}
}