/* =====================================================================
   EverKnit 全站共享样式表
   配色：白底 / 近黑 #111 / 亮橙 #FF5A1F / 灰 #9A9A9A（现代极简风）
   说明：首页与所有内页都引用这一份，改一处全站生效。
   ===================================================================== */

/* ===== 配色与基础变量 ===== */
:root{
  --bg:#ffffff; --ink:#111111; --accent:#FF5A1F; --muted:#9A9A9A;
  --soft:#F6F6F6; --line:#E6E6E6; --maxw:1140px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{font-family:'Plus Jakarta Sans',system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;-webkit-tap-highlight-color:transparent}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:88px 0}
h2{font-size:34px;font-weight:800;letter-spacing:-.02em;margin-bottom:14px}
.lead{color:#444;font-size:17px;max-width:680px}
.eyebrow{color:var(--accent);font-weight:700;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px}
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:700;padding:14px 26px;border-radius:8px;font-size:15px;transition:.2s;border:2px solid var(--accent)}
.btn:hover{filter:brightness(.93)}
.btn-ghost{background:transparent;color:var(--ink);border:2px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;filter:none}

/* ===== 顶部导航 ===== */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .25s ease,border-color .25s ease,background .25s ease}
header.scrolled{background:rgba(255,255,255,.9);box-shadow:0 8px 28px -12px rgba(17,17,17,.22);border-bottom-color:transparent}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-weight:800;font-size:22px;letter-spacing:-.02em;display:inline-flex;align-items:center;gap:9px}
.logo span{color:var(--accent)}
.logo .lmark{width:40px;height:40px;flex-shrink:0;display:block;transition:transform .3s ease}
.logo:hover .lmark{transform:rotate(-8deg) scale(1.05)}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{position:relative;font-weight:600;font-size:15px;color:#222;padding:8px 14px;border-radius:8px;transition:color .18s ease,background .18s ease}
.nav-links a:not(.nav-cta)::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .24s ease}
.nav-links a:not(.nav-cta):hover{color:var(--accent)}
.nav-links a:not(.nav-cta):hover::after{transform:scaleX(1)}
.nav-cta{background:var(--accent);color:#fff;padding:11px 22px;border-radius:10px;margin-left:10px;box-shadow:0 6px 16px -4px rgba(255,90,31,.5);transition:transform .18s ease,box-shadow .18s ease,filter .18s ease}
.nav-cta::after{display:none}
.nav-cta:hover{color:#fff;transform:translateY(-1px);box-shadow:0 11px 24px -6px rgba(255,90,31,.62);filter:brightness(1.03)}
.burger{display:none;font-size:26px;background:none;border:none;cursor:pointer;color:var(--ink);line-height:1;padding:6px}

/* ===== 首屏 Hero ===== */
.hero{padding:84px 0 64px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero h1{font-size:52px;line-height:1.08;font-weight:800;letter-spacing:-.03em}
.hero h1 .hl{color:var(--accent)}
.hero p.sub{font-size:18px;color:#444;margin:22px 0 28px;max-width:560px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.badge{display:inline-flex;align-items:center;gap:7px;background:var(--soft);border:1px solid var(--line);padding:8px 14px;border-radius:30px;font-size:13.5px;font-weight:600;color:#333}
.badge b{color:var(--accent)}
/* 首图：干净圆角 + 柔和投影 */
.hero-img{position:relative;aspect-ratio:4/5;border-radius:16px;overflow:hidden;background:var(--soft);display:flex;align-items:center;justify-content:center;text-align:center;color:var(--muted);font-size:14px;box-shadow:0 30px 60px -22px rgba(17,17,17,.32)}
.hero-img img{transition:transform .8s ease}
.hero-img:hover img{transform:scale(1.04)}

/* ===== 信任数据条 ===== */
.stats{background:var(--ink);color:#fff;padding:40px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat .n{font-size:34px;font-weight:800;color:#fff}
.stat .n span{color:var(--accent)}
.stat .l{font-size:13.5px;color:#bbb;margin-top:4px}

/* ===== 通用卡片网格 ===== */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{border:1px solid var(--line);border-radius:12px;padding:26px;transition:.2s}
.card:hover{border-color:var(--accent);box-shadow:0 10px 30px rgba(0,0,0,.05)}
.card .ic{width:42px;height:42px;border-radius:10px;background:#FFF1EB;color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;margin-bottom:14px}
.card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.card p{color:#555;font-size:15px}

/* 降风险话术条 */
.risk{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.risk span{background:var(--soft);border:1px solid var(--line);padding:10px 18px;border-radius:8px;font-weight:600;font-size:14.5px}
.risk span::before{content:"✓ ";color:var(--accent);font-weight:800}

/* ===== 产品 ===== */
/* 产品轮播 */
.carousel{position:relative;margin-top:34px}
.track{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;padding:4px 2px 14px;-webkit-overflow-scrolling:touch}
.track::-webkit-scrollbar{height:6px}
.track::-webkit-scrollbar-thumb{background:#ddd;border-radius:3px}
.track::-webkit-scrollbar-track{background:transparent}
.slide{flex:0 0 auto;width:258px;scroll-snap-align:start}
.slide img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:14px;border:1px solid var(--line);display:block}
.slide .cap{padding:12px 4px 0;font-weight:600;font-size:14.5px}
.slide .cap small{display:block;color:var(--muted);font-weight:500;font-size:12.5px;margin-top:1px}
.carousel .arrow{position:absolute;top:36%;width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:20px;color:var(--ink);display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(0,0,0,.10);z-index:3;transition:.15s}
.carousel .arrow:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.carousel .prev{left:-12px}.carousel .next{right:-12px}
@media(max-width:880px){.carousel .arrow{display:none}.slide{width:70vw}}
/* 方案B：进场轻提示——首次进入产品区时，轨道左滑半张再弹回，暗示"可左右滑动" */
@keyframes hintSwipe{0%{transform:translateX(0)}35%{transform:translateX(-46px)}70%{transform:translateX(6px)}100%{transform:translateX(0)}}
.track.hint{animation:hintSwipe 1.15s cubic-bezier(.34,1.2,.5,1) both}
@media(prefers-reduced-motion:reduce){.track.hint{animation:none}}

/* ===== 流程 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;position:relative;text-align:center;margin-top:52px}
.steps::before{content:"";position:absolute;top:40px;left:14%;right:14%;height:2px;background:repeating-linear-gradient(90deg,#e7ddd2 0 8px,transparent 8px 16px);z-index:0}
.step{position:relative;z-index:1}
.step .circle{width:80px;height:80px;border-radius:50%;background:linear-gradient(145deg,#FF6A2B,#EE4A0C);display:flex;align-items:center;justify-content:center;margin:0 auto 18px;position:relative;border:6px solid #fff;box-shadow:0 12px 26px -8px rgba(255,90,31,.55)}
.step .circle svg{width:34px;height:34px;stroke:#fff;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.step .badge{position:absolute;top:-3px;right:-3px;width:28px;height:28px;min-width:28px;aspect-ratio:1;padding:0;border-radius:50%;background:#fff;border:2px solid var(--accent);color:var(--accent);font-size:13px;font-weight:800;line-height:1;display:grid;place-items:center;box-shadow:0 3px 9px rgba(0,0,0,.16)}
.step h3{font-size:17px;margin-bottom:6px}
.step p{color:#555;font-size:14.5px;max-width:230px;margin:0 auto}
@media(max-width:880px){.steps::before{display:none}}

/* ===== 关于/工厂 ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.gallery .ph{aspect-ratio:1/1;background:var(--soft);border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:12.5px;text-align:center;padding:12px}

/* ===== 认证 ===== */
.certs{display:flex;gap:24px;flex-wrap:wrap;justify-content:center;margin-top:8px}
.cert{width:130px;height:80px;border:1px dashed var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:12.5px;text-align:center;padding:8px}

/* ===== 好评 ===== */
.quote{border:1px solid var(--line);border-radius:14px;padding:26px;display:flex;flex-direction:column;gap:14px;background:#fff}
.quote .stars{color:var(--accent);font-size:15px;letter-spacing:3px}
.quote p{font-size:15px;color:#333;line-height:1.62;flex:1;margin:0}
.quote .qfoot{display:flex;align-items:center;gap:12px}
.quote .avatar{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px;flex-shrink:0}
.quote .qname{font-weight:700;font-size:14.5px}
.quote .qrole{color:var(--muted);font-size:12.5px;font-weight:500}

/* ===== FAQ ===== */
.faq details{border:1px solid var(--line);border-radius:10px;padding:0 20px;margin-bottom:12px}
.faq summary{cursor:pointer;font-weight:700;padding:18px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;font-size:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-size:24px;font-weight:700}
.faq details[open] summary::after{content:"–"}
.faq p{padding:0 0 18px;color:#555;font-size:15px}

/* ===== 联系 ===== */
.contact{background:var(--soft)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.form input,.form select,.form textarea{width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:8px;font:inherit;margin-bottom:14px;background:#fff}
.form textarea{min-height:120px;resize:vertical}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.ci{display:flex;gap:12px;align-items:flex-start;margin-bottom:18px}
.ci .ic{color:var(--accent);font-size:20px}

/* ===== 页脚 ===== */
footer{background:var(--ink);color:#bbb;padding:48px 0 30px}
footer .logo{color:#fff;margin-bottom:10px}
footer a{color:#bbb}footer a:hover{color:#fff}
.foot-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px;margin-bottom:30px}
.foot-col a{display:inline-block}
.copy{border-top:1px solid #333;padding-top:20px;font-size:13.5px;color:#888}

/* ===== 悬浮 WhatsApp ===== */
.wa{position:fixed;right:22px;bottom:22px;z-index:60;background:#25D366;color:#fff;width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:30px;box-shadow:0 6px 20px rgba(0,0,0,.2)}

/* =====================================================================
   ↓↓↓ 内容页（材质落地页 / 采购指南文章）专用新增样式 ↓↓↓
   ===================================================================== */

/* 面包屑导航（给搜索引擎和访客看的层级路径） */
.crumb{font-size:13.5px;color:var(--muted);padding:22px 0 0}
.crumb a{color:var(--muted);font-weight:600}
.crumb a:hover{color:var(--accent)}
.crumb span{color:#333;font-weight:600}
.crumb .sep{margin:0 8px;color:#ccc}

/* 内页页头（替代首页 hero，更紧凑） */
.page-hero{padding:46px 0 10px}
.page-hero h1{font-size:44px;line-height:1.1;font-weight:800;letter-spacing:-.03em;max-width:880px}
.page-hero h1 .hl{color:var(--accent)}
.page-hero .sub{font-size:18px;color:#444;margin:20px 0 26px;max-width:720px}
/* 收紧页头与下方正文之间的空白，让落地页中段更紧凑协调（指南文章用内联 padding 覆盖，不受影响） */
.page-hero + section{padding-top:40px}
/* 落地页两栏页头：左文字 + 右产品图。图片栏收窄(440px)+保持完整 4:5 比例(不裁切全身图)，
   这样全身图高度自然接近左栏文字，居中对齐后上下空白很小、图也完整 */
.page-hero{padding:40px 0 8px}
.page-hero-grid{display:grid;grid-template-columns:1fr 440px;gap:54px;align-items:center}
.page-hero-text{max-width:600px}
.page-hero-img{position:relative;aspect-ratio:4/5;border-radius:18px;overflow:hidden;background:var(--soft);box-shadow:0 30px 60px -22px rgba(17,17,17,.32)}
.page-hero-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;transition:transform .8s ease}
.page-hero-img:hover img{transform:scale(1.04)}
.page-hero .eyebrow{margin-top:0}
@media(max-width:980px){.page-hero-grid{grid-template-columns:1fr 380px;gap:40px}}
@media(max-width:880px){
  .page-hero-grid{grid-template-columns:1fr;gap:26px}
  .page-hero-text{max-width:none}
  .page-hero-img{max-width:420px;margin-top:8px}
}
@media(max-width:560px){.page-hero h1{font-size:30px}.page-hero .sub{font-size:16px}.page-hero + section{padding-top:28px}.page-hero-img{aspect-ratio:4/3}}
/* 介绍区三栏要点：横排对齐，撑满到图片右缘 */
.intro-3col{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;align-items:start}
.intro-3col .col{position:relative;padding-top:18px}
.intro-3col .col::before{content:"";position:absolute;top:0;left:0;width:34px;height:3px;background:var(--accent);border-radius:2px}
.intro-3col h3{font-size:17px;font-weight:800;margin-bottom:9px;letter-spacing:-.01em}
.intro-3col p{font-size:15.5px;line-height:1.72;color:#555;margin:0}
@media(max-width:760px){.intro-3col{grid-template-columns:1fr;gap:26px}}

/* 文章正文排版（采购指南） */
.prose{max-width:760px}
.prose p{font-size:17px;color:#333;margin:0 0 20px;line-height:1.72}
.prose h2{font-size:28px;margin:42px 0 14px}
.prose h3{font-size:20px;font-weight:700;margin:30px 0 10px}
.prose ul,.prose ol{margin:0 0 22px;padding-left:22px}
.prose li{font-size:17px;color:#333;margin-bottom:9px;line-height:1.65}
.prose strong{color:var(--ink)}
.prose a{color:var(--accent);font-weight:600;text-decoration:underline;text-underline-offset:2px}
.prose blockquote{border-left:4px solid var(--accent);background:var(--soft);padding:16px 20px;margin:0 0 24px;border-radius:0 8px 8px 0;font-size:16.5px;color:#333}
.prose .meta{color:var(--muted);font-size:14px;font-weight:600;margin-bottom:8px}
.prose .keytake{border:1px solid var(--line);border-radius:12px;padding:22px 24px;background:#fff;margin:0 0 30px}
.prose .keytake h3{margin:0 0 10px;font-size:16px;text-transform:uppercase;letter-spacing:.06em;color:var(--accent)}
.prose .keytake ul{margin:0;padding-left:20px}
.prose .keytake li{font-size:15.5px;margin-bottom:6px}

/* 文末/区块 CTA 横幅 */
.cta-band{background:var(--ink);color:#fff;border-radius:16px;padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin:0;font-size:26px}
.cta-band p{color:#cfcfcf;margin:6px 0 0;font-size:15.5px;max-width:520px}
.cta-band .btn{flex-shrink:0}

/* 相关页面 / 文章卡片 */
.linkcard{display:block;border:1px solid var(--line);border-radius:12px;padding:24px;transition:.2s;height:100%}
.linkcard:hover{border-color:var(--accent);box-shadow:0 10px 30px rgba(0,0,0,.05);transform:translateY(-2px)}
.linkcard .tag{color:var(--accent);font-weight:700;font-size:12.5px;letter-spacing:.1em;text-transform:uppercase}
.linkcard h3{font-size:18px;font-weight:700;margin:8px 0 8px}
.linkcard p{color:#555;font-size:14.5px}
.linkcard .more{color:var(--accent);font-weight:700;font-size:14px;margin-top:12px;display:inline-block}

/* 规格表（材质页 spec） */
.spec{width:100%;border-collapse:collapse;margin-top:10px;font-size:15px}
.spec th,.spec td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line)}
.spec th{width:38%;font-weight:700;color:var(--ink);background:var(--soft)}
.spec td{color:#444}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:none}

/* ===== 响应式 ===== */
/* 平板 / 小笔记本 */
@media(max-width:880px){
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:14px 18px;gap:4px;border-bottom:1px solid var(--line);box-shadow:0 12px 24px -12px rgba(0,0,0,.18)}
  .nav-links a{padding:12px 14px;border-radius:10px}
  .nav-links a:not(.nav-cta):hover{background:var(--soft)}
  .nav-links a:not(.nav-cta)::after{display:none}
  .nav-cta{margin-left:0;text-align:center;margin-top:6px}
  .nav-links.open{display:flex}
  .burger{display:block}
  .hero-grid,.about-grid,.contact-grid{grid-template-columns:1fr}
  .hero h1{font-size:38px}
  .grid-4,.grid-3,.steps,.stats-grid{grid-template-columns:repeat(2,1fr)}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  section{padding:60px 0}
  h2{font-size:28px}
  .form .row{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 28px}
}
/* 手机 */
@media(max-width:560px){
  .wrap{padding:0 18px}
  section{padding:46px 0}
  .hero{padding:36px 0 42px}
  .hero-grid,.about-grid{gap:28px}
  .hero h1{font-size:30px}
  .hero p.sub{font-size:16px;margin:16px 0 22px}
  h2{font-size:24px}
  .lead{font-size:15.5px}
  /* 信息卡片改单列，文字更舒展、不拥挤 */
  .grid-4,.grid-3,.steps{grid-template-columns:1fr}
  /* 数据条保持两列（数字短），收紧字号防溢出 */
  .stats{padding:30px 0}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px 10px}
  .stat .n{font-size:24px}
  .stat .l{font-size:12.5px}
  /* 首屏按钮整行，拇指好点 */
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%;text-align:center}
  /* 首图别太高，少占屏 */
  .hero-img{aspect-ratio:4/3}
  /* 导航与 Logo 略缩 */
  header .nav{height:60px}
  .nav-links{top:60px}
  .logo{font-size:19px}.logo .lmark{width:34px;height:34px}
  /* 产品卡更宽，露出半张暗示可滑动 */
  .slide{width:78vw}
  /* 联系区与页脚 */
  .contact-grid{gap:24px}
  .foot-grid{flex-direction:column;gap:22px}
  /* 浮动 WhatsApp 略小、避免遮挡内容 */
  .wa{width:52px;height:52px;font-size:26px;right:16px;bottom:16px}
  /* 卡片内边距收一点 */
  .card{padding:22px}.quote{padding:22px}
  /* 内容页 */
  .prose p,.prose li{font-size:16px}
  .prose h2{font-size:23px}
  .cta-band h2{font-size:22px}
}