/* =========================================================
   竹红菌 · 三位一体疗法  官方网站
   医疗清新 · 蓝绿白 + 品牌玫红点缀
   纯手写 CSS，无框架依赖
   ========================================================= */

/* ---------- 设计变量 ---------- */
:root{
  /* 主色：品红紫（呼应产品包装渐变）。变量名沿用 green-* 以保持兼容 */
  --green-900:#45123b;   /* 最深紫梅（页脚/深底） */
  --green-800:#6a1a55;   /* 深紫梅 */
  --green-700:#b41d74;   /* 主色 品红玫 */
  --green-600:#a23a8c;   /* 品红紫中间调（渐变用） */
  --green-500:#c44d9a;
  --green-300:#e7a9d2;
  --green-100:#fbe6f2;
  --green-50:#fdf3f9;

  /* 辅色：紫罗兰（包装渐变的紫端） */
  --rose-600:#7a2f9c;
  --rose-500:#9a46b8;
  --rose-200:#e4cef1;
  --rose-50:#f6eefb;

  --gold:#c8a24c;

  --ink:#2a1825;
  --ink-soft:#5f4a59;
  --ink-faint:#94808e;

  --line:rgba(110,26,82,.13);
  --line-soft:rgba(110,26,82,.07);

  --bg:#ffffff;
  --bg-soft:#fdf5fa;

  --shadow-sm:0 2px 10px rgba(90,20,70,.07);
  --shadow-md:0 14px 38px rgba(90,20,70,.12);
  --shadow-lg:0 30px 70px rgba(90,20,70,.18);

  --radius-s:12px;
  --radius:18px;
  --radius-l:28px;

  --maxw:1180px;

  --font-serif:"Noto Serif SC","Songti SC","STSong",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}

/* ---------- 基础 ---------- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

section{position:relative}
.sec{padding:96px 0}
.sec-tight{padding:64px 0}

/* ---------- 文字 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.16em;
  color:var(--green-600);text-transform:uppercase;
  padding:7px 15px;border-radius:999px;
  background:var(--green-100);
  margin-bottom:20px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--rose-500)}

h1,h2,h3{font-family:var(--font-serif);font-weight:700;line-height:1.25;color:var(--ink)}
h2.title{font-size:clamp(28px,4vw,42px);letter-spacing:.01em}
h3{font-size:22px}
.lead{font-size:18px;color:var(--ink-soft);max-width:64ch}

.sec-head{max-width:760px;margin:0 auto 56px;text-align:center}
.sec-head .lead{margin:18px auto 0}
.sec-head.left{margin-left:0;text-align:left}
.sec-head.left .lead{margin-left:0}
.mini-sec-head{text-align:center;margin:0 auto 28px}

.accent{color:var(--rose-600)}
.green{color:var(--green-700)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-sans);font-weight:600;font-size:15px;
  padding:14px 28px;border-radius:999px;cursor:pointer;border:1.5px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--green-700);color:#fff;box-shadow:0 10px 24px rgba(180,29,116,.30)}
.btn-primary:hover{background:var(--green-800);transform:translateY(-2px);box-shadow:0 16px 32px rgba(180,29,116,.36)}
.btn-ghost{background:#fff;color:var(--green-800);border-color:var(--green-300)}
.btn-ghost:hover{background:var(--green-50);transform:translateY(-2px)}
.btn-tmall{background:#fff;color:#ff0036;border-color:#ff0036}
.btn-tmall:hover{background:#fff5f5;transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,0,54,.12)}
.btn-rose{background:var(--rose-600);color:#fff;box-shadow:0 10px 24px rgba(122,47,156,.28)}
.btn-rose:hover{background:var(--rose-500);transform:translateY(-2px)}
.btn-lg{padding:16px 34px;font-size:16px}
.btn svg{width:18px;height:18px}
.btn .tmall-logo{width:68px;height:44px;object-fit:contain;flex:none;transform:translate(8px,4px)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line-soft);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:12px}
.brand-badge{
  width:42px;height:42px;border-radius:12px;flex:none;
  background:linear-gradient(150deg,var(--green-600),var(--green-800));
  display:grid;place-items:center;color:#fff;font-family:var(--font-serif);
  font-weight:700;font-size:20px;box-shadow:var(--shadow-sm);
  position:relative;overflow:hidden;
}
.brand-badge::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 70% 20%,rgba(255,255,255,.35),transparent 55%)}
.site-header .brand-badge{display:none}
.site-footer .brand-badge{display:none}
.brand-txt{display:block;width:156px}
.brand-txt b{display:block;font-family:var(--font-serif);font-size:18px;letter-spacing:.02em;line-height:1.1;white-space:nowrap}
.brand-txt span{display:block;width:100%;font-size:11px;color:var(--ink-faint);letter-spacing:.08em;text-align:justify;text-align-last:justify;white-space:nowrap}
.brand-txt span::after{content:"";display:inline-block;width:100%}

.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  font-size:15px;font-weight:500;color:var(--ink-soft);
  padding:9px 16px;border-radius:999px;transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--green-800);background:var(--green-50)}
.nav-links a.active{color:var(--green-800);background:var(--green-100);font-weight:600}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-tel{display:flex;align-items:center;gap:7px;font-weight:700;color:var(--green-800);font-size:15px}
.nav-tel svg{width:17px;height:17px}

.nav-toggle{display:none;border:none;background:transparent;color:var(--green-800);font-family:var(--font-sans);font-weight:600;cursor:pointer}
.nav-toggle-icon{width:9px;height:9px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);transition:transform .2s ease;margin-top:-4px}
.nav-toggle.open .nav-toggle-icon{transform:rotate(225deg);margin-top:4px}

/* ---------- 装饰背景 ---------- */
.blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5;z-index:0;pointer-events:none}
.blob-green{background:radial-gradient(circle,var(--green-300),transparent 70%)}
.blob-rose{background:radial-gradient(circle,var(--rose-200),transparent 70%)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:
  linear-gradient(180deg,var(--green-50),#ffffff 70%);
  padding:70px 0 90px;}
.hero .blob1{width:520px;height:520px;top:-140px;right:-120px}
.hero .blob2{width:360px;height:360px;bottom:-120px;left:-100px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:2}
.hero h1{font-size:clamp(34px,5.2vw,58px);line-height:1.16;margin-bottom:22px}
.hero h1 .wash{color:#c0267d}
.hero h1 .apply{color:#7430a5}
.hero h1 .shine{color:#7430a5}
.mobile-first-hero h1 .wash,
.mobile-first-hero h1 .apply,
.mobile-first-hero h1 .shine{font-size:1.08em}
.hero .lead{font-size:19px;margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.hero-trust{display:flex;gap:26px;flex-wrap:wrap;padding-top:26px;border-top:1px solid var(--line)}
.hero-trust .t{display:flex;flex-direction:column}
.hero-trust .t b{font-family:var(--font-serif);font-size:26px;color:var(--green-800);line-height:1}
.hero-trust .t span{font-size:13px;color:var(--ink-faint);margin-top:6px}

.hero-visual{position:relative}
.hero-card{
  position:relative;z-index:2;background:linear-gradient(160deg,#ffffff,var(--green-50));
  border:1px solid var(--line);border-radius:var(--radius-l);
  padding:30px;box-shadow:var(--shadow-lg);
}
.hero-card img{border-radius:14px;width:100%}
.hero-tag{
  position:absolute;z-index:3;background:#fff;border-radius:14px;padding:12px 16px;
  box-shadow:var(--shadow-md);display:flex;align-items:center;gap:11px;font-size:14px;font-weight:600;
  border:1px solid var(--line-soft);
}
.hero-tag .dot{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:#fff;flex:none}
.hero-tag.t1{top:18px;left:-26px}
.hero-tag.t2{bottom:34px;right:-22px}
.hero-tag small{display:block;font-weight:500;color:var(--ink-faint);font-size:11px}

.mobile-first-hero{padding:58px 0 36px}
.mobile-first-hero .eyebrow{
  display:flex;
  width:max-content;
  margin-left:auto;
  margin-right:auto;
}
.hero-product-only{
  background:transparent;
  border:0;
  border-radius:0;
  padding:0;
  box-shadow:none;
  margin-top:-8px;
}
.hero-product-only img{
  width:106%;
  max-width:none;
  margin-left:-3%;
  margin-bottom:-22px;
  border-radius:0;
}

.kit-showcase{
  max-width:780px;
  margin:0 auto 28px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  padding:18px;
  box-shadow:var(--shadow-sm);
}
.kit-showcase img{width:100%;border-radius:16px}

.product-kit{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.product-step{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:var(--shadow-sm);
}
.product-step img{
  width:100%;
  aspect-ratio:4 / 3;
  height:auto;
  object-fit:contain;
  background:#fff;
  border-radius:14px;
  margin:12px 0 18px;
}
.product-step h3{font-size:20px;margin-bottom:8px}
.product-step p{font-size:14.5px;color:var(--ink-soft);margin-bottom:14px}
.step-head{display:flex;align-items:center;gap:12px;color:var(--green-800)}
.step-head span{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:var(--green-100);
  color:var(--green-800);
  font-family:var(--font-serif);
  font-weight:700;
}
.step-head b{font-size:22px;line-height:1.25}
.product-step.rose .step-head{color:var(--rose-600)}
.product-step.rose .step-head span{background:var(--rose-50);color:var(--rose-600)}
.product-step.gold .step-head{color:#7430a5}
.product-step.gold .step-head span{background:var(--rose-50);color:#7430a5}

.mobile-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.flow-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:var(--shadow-sm);
}
.flow-card span{
  width:36px;height:36px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--green-100);
  color:var(--green-800);
  font-family:var(--font-serif);
  font-weight:700;
  margin-bottom:12px;
}
.flow-card h4{font-size:17px;margin-bottom:6px;color:var(--ink)}
.flow-card p{font-size:14.5px;color:var(--ink-soft);line-height:1.65}
.flow-card.rose span{background:var(--rose-50);color:var(--rose-600)}
.flow-card.gold span{background:var(--rose-50);color:#7430a5}
.flow-note{
  margin:22px auto 0;
  max-width:760px;
  color:var(--ink-faint);
  font-size:13.5px;
  text-align:center;
}

/* ---------- 通用卡片网格 ---------- */
.grid{display:grid;gap:24px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:var(--green-300)}
.card .ic{
  width:54px;height:54px;border-radius:15px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--green-100);color:var(--green-700);
}
.card .ic svg{width:27px;height:27px}
.card h3{font-size:19px;margin-bottom:9px}
.card p{color:var(--ink-soft);font-size:15px}

/* 痛点卡（玫红系） */
.pain .ic{background:var(--rose-50);color:var(--rose-600)}

/* ---------- 首页科普预览 ---------- */
.science-preview{
  padding-top:54px;
}
.science-preview-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
  max-width:960px;
  margin:0 auto;
}
.science-preview-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px 22px;
  box-shadow:var(--shadow-sm);
}
.science-preview-card h3{
  font-family:var(--font-sans);
  font-size:18px;
  line-height:1.45;
  margin-bottom:10px;
}
.science-preview-card p{
  color:var(--ink-soft);
  font-size:14.5px;
  line-height:1.8;
}
.science-preview-action{
  text-align:center;
  margin-top:28px;
}

/* ---------- 三位一体 ---------- */
.trinity{background:var(--bg-soft)}
.tri-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.tri-card{
  position:relative;background:#fff;border-radius:var(--radius-l);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .3s,box-shadow .3s;display:flex;flex-direction:column;
}
.tri-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.tri-top{padding:30px 30px 22px;color:#fff;position:relative;overflow:hidden}
.tri-card.c1 .tri-top{background:linear-gradient(150deg,var(--green-600),var(--green-800))}
.tri-card.c2 .tri-top{background:linear-gradient(150deg,var(--rose-500),var(--rose-600))}
.tri-card.c3 .tri-top{background:linear-gradient(150deg,#d9a23e,#b8801f)}
.tri-top .step-no{font-family:var(--font-serif);font-size:54px;line-height:1;opacity:.32;position:absolute;top:14px;right:22px}
.tri-char{font-family:var(--font-serif);font-size:40px;font-weight:700;letter-spacing:.1em;margin-bottom:6px}
.tri-top .en{font-size:12px;letter-spacing:.24em;text-transform:uppercase;opacity:.85}
.tri-body{padding:26px 30px 32px;flex:1;display:flex;flex-direction:column}
.tri-body h3{font-size:20px;margin-bottom:8px}
.tri-body .pname{font-size:13px;color:var(--ink-faint);margin-bottom:14px;letter-spacing:.02em}
.tri-body p{color:var(--ink-soft);font-size:15px;margin-bottom:16px}
.tri-feat{margin-top:auto;display:flex;flex-direction:column;gap:9px}
.tri-feat li{display:flex;gap:10px;font-size:14px;color:var(--ink);align-items:flex-start}
.tri-feat li svg{width:18px;height:18px;flex:none;margin-top:3px;color:var(--green-600)}
.tri-card.c2 .tri-feat li svg{color:var(--rose-500)}
.tri-card.c3 .tri-feat li svg{color:var(--gold)}

/* 三位一体合一说明条 */
.combine{
  margin-top:40px;display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap;
  background:linear-gradient(120deg,var(--green-800),var(--green-600));color:#fff;
  border-radius:var(--radius);padding:26px 34px;text-align:center;box-shadow:var(--shadow-md);
}
.combine .big{font-family:var(--font-serif);font-size:24px;font-weight:700}
.combine .big span{padding:0 8px;color:#ffe6b3}
.combine p{opacity:.92;font-size:15px}

/* ---------- 成分 / 图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.rev .split-media{order:2}
.split-media{position:relative}
.media-frame{
  border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-md);background:linear-gradient(160deg,#fff,var(--green-50));padding:18px;
}
.media-frame img{border-radius:16px;width:100%}
.feat-list{margin-top:24px;display:flex;flex-direction:column;gap:16px}
.feat-list li{display:flex;gap:14px;align-items:flex-start}
.feat-list .fi{width:40px;height:40px;border-radius:11px;background:var(--green-100);color:var(--green-700);display:grid;place-items:center;flex:none}
.feat-list .fi svg{width:20px;height:20px}
.feat-list b{display:block;font-size:16px;margin-bottom:2px}
.feat-list span{color:var(--ink-soft);font-size:14.5px}

/* 成分小药丸 */
.ingredient-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:999px;
  background:#fff;border:1px solid var(--green-300);font-size:14px;font-weight:600;color:var(--green-800);
}
.chip::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--rose-500)}

/* ---------- 数据条 ---------- */
.stats{background:linear-gradient(150deg,var(--green-800),var(--green-900));color:#fff;position:relative;overflow:hidden}
.stats .blob{opacity:.22}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;position:relative;z-index:2;text-align:center}
.stat b{font-family:var(--font-serif);font-size:clamp(36px,5vw,52px);line-height:1;display:block;color:#fff}
.stat b i{font-style:normal;font-size:.5em;margin-left:2px;color:var(--green-300)}
.stat span{display:block;margin-top:12px;font-size:14.5px;opacity:.85}
.stats .src{text-align:center;margin-top:40px;font-size:12.5px;opacity:.6;position:relative;z-index:2}

/* ---------- 使用流程 ---------- */
.steps{counter-reset:step}
.step-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px 26px;box-shadow:var(--shadow-sm);
}
.step .num{
  width:46px;height:46px;border-radius:13px;background:var(--green-700);color:#fff;
  font-family:var(--font-serif);font-size:22px;display:grid;place-items:center;margin-bottom:16px;
  box-shadow:0 8px 18px rgba(180,29,116,.26);
}
.step.rose .num{background:var(--rose-600);box-shadow:0 8px 18px rgba(122,47,156,.26)}
.step.gold .num{background:var(--gold);box-shadow:0 8px 18px rgba(200,162,76,.28)}
.step h4{font-size:17px;font-family:var(--font-serif);margin-bottom:7px}
.step p{font-size:14.5px;color:var(--ink-soft)}
.step .meta{margin-top:12px;font-size:13px;font-weight:600;color:var(--green-700)}

/* ---------- 隐私承诺条 ---------- */
.promise{
  background:linear-gradient(120deg,var(--green-900),var(--green-700));color:#fff;border-radius:var(--radius-l);
  padding:48px;display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center;position:relative;overflow:hidden;
  box-shadow:var(--shadow-lg);
}
.promise .blob{opacity:.25}
.promise h2{color:#fff;font-size:30px;margin-bottom:14px;position:relative;z-index:2}
.promise p{opacity:.9;position:relative;z-index:2}
.promise-points{display:flex;flex-direction:column;gap:16px;position:relative;z-index:2}
.promise-points li{display:flex;gap:13px;align-items:flex-start}
.promise-points .pi{width:38px;height:38px;border-radius:11px;background:rgba(255,255,255,.16);display:grid;place-items:center;flex:none}
.promise-points .pi svg{width:19px;height:19px;color:#fff}
.promise-points b{display:block;font-size:15.5px}
.promise-points span{font-size:13.5px;opacity:.82}

/* ---------- CTA 区 ---------- */
.cta-band{
  background:linear-gradient(150deg,var(--green-50),var(--rose-50));border:1px solid var(--line);
  border-radius:var(--radius-l);padding:54px;text-align:center;position:relative;overflow:hidden;box-shadow:var(--shadow-sm);
}
.cta-band h2{font-size:clamp(26px,3.5vw,38px);margin-bottom:14px}
.cta-band p{color:var(--ink-soft);max-width:54ch;margin:0 auto 26px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta-care{
  max-width:760px;
  margin:0 auto;
  padding:48px 34px 46px;
  background:linear-gradient(160deg,var(--green-50),var(--rose-50));
  border-color:var(--green-300);
}
.cta-care .eyebrow{margin-bottom:22px}
.cta-care h2{font-size:clamp(30px,5vw,44px)}
.cta-care p{font-size:18px;line-height:1.9;max-width:25em;margin-bottom:30px}
.cta-care .cta-actions{
  flex-direction:column;
  align-items:center;
  gap:16px;
}
.cta-care .btn{
  width:min(360px,100%);
  justify-content:center;
  border-radius:999px;
  font-size:18px;
  padding:18px 28px;
}
.cta-care .tmall-link{gap:4px}
.cta-care .btn-rose{background:var(--rose-600)}

/* ---------- 产品详情卡 ---------- */
.prod{display:grid;grid-template-columns:.9fr 1.1fr;gap:0;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow-sm);margin-bottom:34px}
.prod:hover{box-shadow:var(--shadow-md)}
.prod-media{background:linear-gradient(160deg,var(--green-50),#fff);display:grid;place-items:center;padding:34px}
.prod-media img{border-radius:14px}
.prod-info{padding:38px}
.prod-badge{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.04em;
  color:#fff;padding:6px 14px;border-radius:999px;margin-bottom:16px}
.prod.p1 .prod-badge{background:var(--green-700)}
.prod.p2 .prod-badge{background:var(--rose-600)}
.prod.p3 .prod-badge{background:var(--gold)}
.prod-info h3{font-size:24px;margin-bottom:6px}
.prod-en{font-size:12px;letter-spacing:.16em;color:var(--ink-faint);text-transform:uppercase;margin-bottom:18px}
.spec-table{width:100%;border-collapse:collapse;margin-top:8px}
.spec-table th,.spec-table td{text-align:left;padding:11px 0;border-bottom:1px solid var(--line-soft);font-size:14.5px;vertical-align:top}
.spec-table th{color:var(--ink-faint);font-weight:600;width:96px;white-space:nowrap}
.spec-table td{color:var(--ink)}

/* ---------- FAQ ---------- */
.faq{max-width:840px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-s);margin-bottom:14px;overflow:hidden;transition:border-color .2s}
.faq-item.open{border-color:var(--green-300)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;cursor:pointer;font-weight:600;font-size:16px}
.faq-q .qi{width:26px;height:26px;border-radius:50%;background:var(--green-100);color:var(--green-700);display:grid;place-items:center;flex:none;transition:.3s}
.faq-item.open .qi{background:var(--green-700);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--ink-soft);font-size:15px}
.faq-a div{padding:0 24px 22px}
.faq-section{padding-top:22px}
.faq-home{max-width:760px}
.faq-home .faq-item{
  border-color:#ead5e3;
  border-radius:18px;
  box-shadow:0 10px 28px rgba(69,18,59,.05);
}
.faq-home .faq-item.open{border-color:var(--green-300)}
.faq-home .faq-q{
  padding:24px 28px;
  font-family:var(--font-sans);
  font-size:19px;
  line-height:1.5;
  color:var(--ink);
  font-weight:700;
}
.faq-home .faq-q .qi{
  width:24px;
  height:24px;
  background:transparent;
  color:var(--green-700);
  font-family:var(--font-sans);
  font-size:26px;
  font-weight:500;
  line-height:1;
}
.faq-home .faq-a{
  font-size:16.5px;
  line-height:1.85;
}
.faq-home .faq-a div{padding:0 34px 32px}
.faq-note{
  margin:22px auto 0;
  text-align:center;
  color:var(--ink-faint);
  font-size:15px;
}

/* ---------- 表单 ---------- */
.form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px;color:var(--ink)}
.field input,.field select,.field textarea{
  width:100%;padding:13px 16px;border:1.5px solid var(--line);border-radius:12px;font-family:inherit;font-size:15px;
  color:var(--ink);background:#fff;transition:border-color .2s,box-shadow .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--green-500);box-shadow:0 0 0 4px var(--green-100)}
.field textarea{min-height:120px;resize:vertical}
.form-note{font-size:12.5px;color:var(--ink-faint);margin-top:8px}

.contact-side{background:linear-gradient(160deg,var(--green-50),#fff);border:1px solid var(--line);border-radius:var(--radius-l);padding:36px}
.contact-side h3{font-size:20px;margin-bottom:20px}
.contact-line{display:flex;gap:14px;align-items:flex-start;margin-bottom:20px}
.contact-line .ci{width:42px;height:42px;border-radius:12px;background:#fff;border:1px solid var(--line);color:var(--green-700);display:grid;place-items:center;flex:none}
.contact-line .ci svg{width:20px;height:20px}
.contact-line b{display:block;font-size:15px}
.contact-line span{font-size:14px;color:var(--ink-soft)}

/* ---------- 页内子头 banner ---------- */
.page-hero{background:linear-gradient(180deg,var(--green-50),#fff);padding:64px 0 48px;position:relative;overflow:hidden;text-align:center}
.page-hero .blob{opacity:.4}
.page-hero h1{font-size:clamp(30px,4.4vw,46px);position:relative;z-index:2;margin-bottom:14px}
.page-hero p{position:relative;z-index:2;color:var(--ink-soft);max-width:60ch;margin:0 auto;font-size:17px}
.crumbs{position:relative;z-index:2;font-size:13px;color:var(--ink-faint);margin-bottom:22px}
.crumbs a:hover{color:var(--green-700)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--green-900);color:rgba(255,255,255,.78);padding:64px 0 30px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.8fr 1fr 1.2fr;gap:40px;padding-bottom:22px;border-bottom:1px solid rgba(255,255,255,.12)}
.foot-brand .brand-txt b{color:#fff}
.foot-brand p{margin-top:16px;font-size:14px;opacity:.7;max-width:34ch}
.foot-col h5{color:#fff;font-size:15px;margin-bottom:16px;font-family:var(--font-sans);font-weight:700}
.foot-col a,.foot-col p{display:block;font-size:14px;opacity:.72;margin-bottom:10px;transition:opacity .2s}
.foot-col strong{color:inherit;font-size:inherit;font-weight:inherit}
.foot-col a:hover{opacity:1;color:var(--green-300)}
.foot-bottom{padding-top:24px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:12.5px;opacity:.6}
.disclaimer{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:18px 22px;margin-top:30px;font-size:12.5px;line-height:1.7;opacity:.72}

/* ---------- 滚动显现动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:520px;margin:0 auto}
  .split{grid-template-columns:1fr;gap:36px}
  .split.rev .split-media{order:0}
  .g-4{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:36px 20px}
  .tri-grid{grid-template-columns:1fr;max-width:460px;margin:0 auto}
  .product-kit{grid-template-columns:1fr;max-width:520px;margin:0 auto}
  .mobile-flow{grid-template-columns:repeat(2,1fr)}
  .step-row{grid-template-columns:1fr;max-width:480px;margin:0 auto}
  .promise{grid-template-columns:1fr;padding:36px}
  .prod{grid-template-columns:1fr}
  .form-wrap{grid-template-columns:1fr;gap:28px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media(max-width:680px){
  .sec{padding:64px 0}
  .nav{height:auto;min-height:74px;align-items:center;flex-wrap:wrap;padding-top:10px;padding-bottom:10px}
  .brand{gap:0}
  .brand-txt{width:164px}
  .brand-txt b{font-size:19px}
  .brand-txt span{font-size:12px}
  .nav-toggle{
    order:0;
    width:auto;
    display:flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:8px 0;
    font-size:13px;
  }
  .nav-links{
    order:2;
    width:100%;
    display:none;
    flex-direction:column;
    gap:0;
    margin-top:10px;
    padding:8px 0;
    border-top:1px solid var(--line);
  }
  .site-header.menu-open .nav-links{display:flex}
  .nav-links a{
    width:100%;
    text-align:left;
    padding:14px 12px;
    font-size:15px;
    border-radius:0;
    white-space:nowrap;
    border-bottom:1px solid rgba(118,83,109,.12);
  }
  .nav-links a:last-child{
    border-bottom:none;
  }
  .g-2,.g-3{grid-template-columns:1fr}
  .g-4{grid-template-columns:1fr 1fr}
  .science-preview-grid{grid-template-columns:1fr;gap:14px}
  .science-preview-card{padding:22px 20px}
  .hero{padding:38px 0 0}
  .hero-grid{gap:26px}
  .hero h1{font-size:32px}
  .mobile-first-hero h1{font-size:36px;line-height:1.18;margin-bottom:24px}
  .mobile-first-hero .lead{font-size:20px;line-height:1.85;margin-bottom:24px}
  .hero-cta{gap:10px;margin-bottom:8px}
  .hero-cta .btn{flex:1;justify-content:center;padding:13px 12px}
  .hero-product-only{padding:0;margin-top:-12px}
  .hero-product-only img{width:108%;margin-left:-4%;margin-bottom:-28px}
  .hero-tag.t1{left:8px;top:8px}
  .hero-tag.t2{right:8px;bottom:14px}
  .cta-band,.promise{padding:30px 22px}
  .kit-showcase{padding:10px;margin-bottom:18px}
  .product-step{padding:20px 18px}
  .step-head b{font-size:24px}
  .product-step img{margin:10px 0 16px}
  .mobile-flow{grid-template-columns:1fr;gap:12px}
  .flow-card{display:grid;grid-template-columns:42px 1fr;gap:0 12px;padding:18px}
  .flow-card span{grid-row:1 / span 2;margin-bottom:0}
  .flow-card h4{margin-bottom:4px}
  .flow-card p{grid-column:2}
  .flow-note{text-align:left}
  .prod-info{padding:26px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:22px 18px}
  .foot-brand{grid-column:1 / -1}
  .site-footer{padding:44px 0 26px}
  .foot-brand p{max-width:none}
  .foot-col h5{margin-bottom:10px}
  .foot-col a,.foot-col p{margin-bottom:7px;font-size:13.5px}
  .combine{flex-direction:column;gap:10px}
  .container{padding:0 18px}
}

/* ---------- 科普长文 ---------- */
.articles{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:26px}
.article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 40px;box-shadow:var(--shadow-sm);transition:box-shadow .25s}
.article:hover{box-shadow:var(--shadow-md)}
.article .a-kicker{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.1em;color:var(--rose-600);margin-bottom:10px}
.article h3{font-size:23px;line-height:1.35;margin-bottom:16px}
.article p{color:var(--ink-soft);font-size:15.5px;line-height:1.85;margin-bottom:14px}
.article p:last-of-type{margin-bottom:0}
.article .a-fig{float:right;width:240px;margin:4px 0 18px 26px;border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.article .a-fig img{width:100%;display:block}
.article .a-fig figcaption{font-size:12px;color:var(--ink-faint);text-align:center;padding:8px 10px;background:var(--green-50)}
.article .a-note{clear:both;font-size:12.5px;color:var(--ink-faint);border-top:1px dashed var(--line);padding-top:14px;margin-top:18px;line-height:1.7}
@media(max-width:680px){.article{padding:26px 22px}.article .a-fig{float:none;width:100%;margin:0 0 16px}}

/* ---------- 用户案例 ---------- */
.story-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;max-width:960px;margin:0 auto}
.stories-band{
  background:var(--green-50);
}
.story-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm);transition:box-shadow .25s}
.story-card:hover{box-shadow:var(--shadow-md)}
.story-body{flex:1;min-width:0}
.story-meta{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:10px;align-items:center}
.story-meta .tag{font-size:12px;padding:3px 10px;border-radius:20px;background:var(--green-50);color:var(--green-800);font-weight:500}
.story-body p{color:var(--ink-soft);font-size:15px;line-height:1.8}
.story-grid-more{margin-top:22px}
.case-disclaimer{
  max-width:820px;
  margin:24px auto 0;
  color:var(--ink-faint);
  font-size:12.5px;
  line-height:1.7;
  text-align:center;
}

@media(max-width:980px){.story-grid{grid-template-columns:1fr}}
@media(max-width:680px){.story-card{padding:24px 20px}.story-body p{font-size:14.5px}.case-disclaimer{text-align:left}}

/* ===== 新闻中心：后台发布的配图与日期 ===== */
.article .a-cover{width:100%;max-height:320px;object-fit:cover;border-radius:14px;border:1px solid var(--line);margin-bottom:18px;display:block}
.article .a-date{display:inline-block;font-size:12.5px;color:var(--ink-faint);margin-left:12px}

/* ===== 新闻中心 v2：列表卡片 ===== */
.news-item{display:flex;gap:24px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 28px;text-decoration:none;color:inherit;box-shadow:var(--shadow-sm);transition:box-shadow .25s,transform .25s}
.news-item:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.news-item .ni-thumb{flex:none;width:180px;height:124px;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:linear-gradient(135deg,var(--green-50),var(--rose-50));display:flex;align-items:center;justify-content:center}
.news-item .ni-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.news-item .ni-ph{font-size:40px;font-weight:700;color:var(--green-300);font-family:"Noto Serif SC",serif}
.news-item .ni-body{flex:1;min-width:0}
.news-item .ni-meta{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.news-item .ni-meta .a-kicker{margin-bottom:0}
.news-item h3{font-size:20px;line-height:1.4;margin-bottom:8px;color:var(--ink)}
.news-item:hover h3{color:var(--green-700)}
.news-item p{color:var(--ink-soft);font-size:14.5px;line-height:1.8;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item .ni-more{font-size:13px;font-weight:600;color:var(--green-700)}
@media(max-width:640px){.news-item{flex-direction:column;gap:14px}.news-item .ni-thumb{width:100%;height:160px}}

/* 分页 */
.pager{display:flex;justify-content:center;gap:8px;margin-top:34px;flex-wrap:wrap}
.pager a,.pager .cur{min-width:38px;padding:8px 14px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-soft);text-decoration:none;font-size:14px;text-align:center}
.pager a:hover{border-color:var(--green-700);color:var(--green-700)}
.pager .cur{background:var(--green-700);border-color:var(--green-700);color:#fff;font-weight:600}

/* ===== 新闻详情页 ===== */
.nd-wrap{max-width:820px}
.nd-crumb{margin-bottom:22px}
.nd-crumb a{color:var(--ink-soft);text-decoration:none;font-size:14px}
.nd-crumb a:hover{color:var(--green-700)}
.nd{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:44px 48px;box-shadow:var(--shadow-sm)}
.nd-head h1{font-size:30px;line-height:1.4;margin:10px 0 14px}
.nd-date{font-size:13px;color:var(--ink-faint);padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:26px}
.nd-cover{width:100%;border-radius:14px;border:1px solid var(--line);margin-bottom:26px;display:block}
.nd-content{font-size:16px;line-height:2;color:var(--ink-soft)}
.nd-content p{margin-bottom:18px}
.nd-content h2,.nd-content h3{color:var(--ink);margin:30px 0 14px;line-height:1.5}
.nd-content h2{font-size:22px}
.nd-content h3{font-size:19px}
.nd-content img{max-width:100%;border-radius:12px;border:1px solid var(--line);margin:10px 0;display:block}
.nd-content ul,.nd-content ol{padding-left:26px;margin-bottom:18px}
.nd-content li{margin-bottom:8px}
.nd-content blockquote{border-left:3px solid var(--green-300);padding:6px 18px;background:var(--green-50);border-radius:0 10px 10px 0;margin-bottom:18px}
.nd-content a{color:var(--green-700)}
.nd-draft{background:#fff7e6;border:1px solid #f5d98f;color:#9a6b00;border-radius:10px;padding:10px 16px;font-size:13.5px;margin-bottom:18px}
.nd-nav{display:flex;flex-direction:column;gap:10px;margin-top:26px}
.nd-nav-link{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 20px;color:var(--ink-soft);text-decoration:none;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nd-nav-link:hover{border-color:var(--green-700);color:var(--green-700)}
@media(max-width:640px){.nd{padding:28px 22px}.nd-head h1{font-size:23px}}


/* =========================================================
   常驻联系方式（电话 + 微信二维码）
   PC：右侧竖条，hover 向左展开
   手机：底部固定横条，点微信弹出二维码
   DOM 由 assets/js/script.js 注入，全站生效
   ========================================================= */
.float-contact{
  position:fixed;right:18px;top:50%;transform:translateY(-50%);
  z-index:90;display:flex;flex-direction:column;gap:10px;
}
.fc-item{
  position:relative;width:60px;padding:12px 0 10px;
  display:flex;flex-direction:column;align-items:center;gap:5px;
  border:0;cursor:pointer;text-decoration:none;
  border-radius:16px;color:#fff;font-family:var(--font-sans);
  box-shadow:0 8px 22px rgba(90,20,70,.22);
  transition:transform .18s ease,box-shadow .18s ease;
}
.fc-item:hover{transform:translateX(-3px);box-shadow:0 12px 28px rgba(90,20,70,.3)}
.fc-tel{background:linear-gradient(160deg,var(--green-700),var(--rose-600))}
.fc-wx{background:linear-gradient(160deg,#1aad4b,#07a34a)}
.fc-ico{width:24px;height:24px;display:block}
.fc-ico svg{width:100%;height:100%;display:block}
.fc-label{font-size:12px;line-height:1.25;letter-spacing:.5px;writing-mode:vertical-rl;text-orientation:upright;max-height:64px}

/* hover 展开面板 */
.fc-pop{
  position:absolute;right:calc(100% + 12px);top:50%;transform:translateY(-50%) translateX(8px);
  background:#fff;border-radius:14px;padding:14px 16px;
  box-shadow:var(--shadow-md);border:1px solid var(--line);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
  text-align:center;white-space:nowrap;
}
.fc-item:hover .fc-pop,.fc-item:focus-visible .fc-pop{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0)}
.fc-pop::after{
  content:"";position:absolute;left:100%;top:50%;transform:translateY(-50%);
  border:7px solid transparent;border-left-color:#fff;
}
.fc-pop .fc-pop-num{display:block;font-size:20px;font-weight:700;color:var(--green-700);letter-spacing:.5px}
.fc-pop .fc-pop-tip{display:block;font-size:12.5px;font-style:normal;color:var(--ink-faint);margin-top:4px}
.fc-pop img{width:150px;height:150px;display:block;border-radius:8px}
.fc-pop .fc-pop-name{display:block;font-size:13px;font-style:normal;font-weight:600;color:var(--ink);margin-top:9px}

/* 手机端弹层 */
.fc-modal{
  position:fixed;inset:0;z-index:100;display:none;
  align-items:center;justify-content:center;padding:28px;
  background:rgba(42,24,37,.62);backdrop-filter:blur(3px);
}
.fc-modal.open{display:flex}
.fc-modal-card{
  background:#fff;border-radius:20px;padding:26px 24px 22px;
  text-align:center;max-width:320px;width:100%;box-shadow:var(--shadow-lg);
}
.fc-modal-card img{width:100%;max-width:240px;height:auto;display:block;margin:0 auto;border-radius:10px}
.fc-modal-card h4{font-size:16px;color:var(--ink);margin:14px 0 6px}
.fc-modal-card p{font-size:13px;color:var(--ink-faint);line-height:1.6;margin:0}
.fc-modal-close{
  margin-top:16px;width:100%;padding:11px 0;border:0;border-radius:12px;
  background:var(--green-50);color:var(--green-700);font-size:14.5px;font-weight:600;
  cursor:pointer;font-family:var(--font-sans);
}
.fc-modal-close:hover{background:var(--green-100)}

/* ---- 手机：底部固定横条 ---- */
@media(max-width:980px){
  .float-contact{
    right:0;left:0;top:auto;bottom:0;transform:none;
    flex-direction:row;gap:0;
    background:#fff;border-top:1px solid var(--line);
    box-shadow:0 -4px 18px rgba(90,20,70,.1);
    padding-bottom:env(safe-area-inset-bottom,0px);
  }
  .fc-item{
    flex:1;width:auto;flex-direction:row;justify-content:center;gap:8px;
    padding:14px 0;border-radius:0;box-shadow:none;
  }
  .fc-item:hover{transform:none;box-shadow:none}
  .fc-label{writing-mode:horizontal-tb;font-size:15px;max-height:none;font-weight:600}
  .fc-ico{width:20px;height:20px}
  .fc-pop{display:none}
  /* 给页尾让出横条高度，避免遮挡备案号 */
  body{padding-bottom:calc(52px + env(safe-area-inset-bottom,0px))}
}