/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--ff-serif:'Noto Serif SC',Georgia,serif;--ff-sans:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}
html{scroll-behavior:smooth}
body{font-family:var(--ff-sans);line-height:1.8;-webkit-font-smoothing:antialiased;background:var(--bg);color:var(--text)}
img{max-width:100%;display:block}
a{color:inherit}

/* ===== Theme: Warm ===== */
[data-theme="warm"]{
 --bg:#FFFBF5;--bg-alt:#FFF5EB;--bg-card:#FFFFFF;
 --text:#2D2427;--text-2:#5A4A50;--text-3:#8A7A80;
 --accent:#C4917A;--accent-l:#E8C4B0;--accent-d:#A67560;
 --border:#F0E0D5;--shadow:rgba(45,36,39,.08);
 --hdr-bg:rgba(255,251,245,.92);--deco:rgba(196,145,122,.06)
}
/* ===== Theme: Cool ===== */
[data-theme="cool"]{
 --bg:#F5F8FF;--bg-alt:#EBF0FF;--bg-card:#FFFFFF;
 --text:#1A2030;--text-2:#3A4560;--text-3:#6A7590;
 --accent:#7B8EC8;--accent-l:#B0BEE8;--accent-d:#5A6EA8;
 --border:#D5DEF0;--shadow:rgba(26,32,48,.08);
 --hdr-bg:rgba(245,248,255,.92);--deco:rgba(123,142,200,.06)
}

/* ===== Typography ===== */
h1,h2,h3{font-family:var(--ff-serif);color:var(--text);line-height:1.3}
h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:700}
h2{font-size:clamp(1.5rem,3.5vw,2.2rem);font-weight:600}
h3{font-size:clamp(1.1rem,2vw,1.4rem);font-weight:600}
p{color:var(--text-2);line-height:1.9}

/* ===== Layout ===== */
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-alt{background:var(--bg-alt)}
.section-header{text-align:center;margin-bottom:56px}
.section-header h2{margin-bottom:12px}
.section-header p{color:var(--text-3);font-size:1.05rem}
.section-label{display:inline-block;font-size:.78rem;font-weight:500;letter-spacing:2px;text-transform:uppercase;color:var(--accent);margin-bottom:8px}

/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;transition:all .3s;background:var(--hdr-bg);backdrop-filter:blur(12px)}
.site-header.scrolled{background:#fff;box-shadow:0 1px 20px var(--shadow)}
.site-header nav{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:0 auto;padding:18px 24px}
.logo{font-family:var(--ff-serif);font-size:1.15rem;font-weight:700;color:var(--text);text-decoration:none;white-space:nowrap}
.logo span{color:var(--accent);margin:0 4px}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links .mobile-cta{display:none}
.nav-links a{font-size:.9rem;color:var(--text-2);text-decoration:none;transition:color .2s;cursor:pointer}
.nav-links a:hover,.nav-links a.active{color:var(--accent)}
.nav-right{display:flex;align-items:center;gap:10px}
.theme-btn{background:none;border:1px solid var(--border);border-radius:50%;width:34px;height:34px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:.95rem;transition:all .2s}
.theme-btn:hover{border-color:var(--accent);background:var(--bg-alt)}
.btn-primary{display:inline-flex;align-items:center;gap:6px;padding:9px 22px;background:var(--accent);color:#fff;border:none;border-radius:100px;font-size:.88rem;font-weight:500;text-decoration:none;cursor:pointer;transition:all .25s;white-space:nowrap}
.btn-primary:hover{background:var(--accent-d);transform:translateY(-1px);box-shadow:0 4px 14px var(--shadow)}
.btn-outline{display:inline-flex;align-items:center;gap:6px;padding:9px 22px;background:transparent;color:var(--accent);border:1.5px solid var(--accent);border-radius:100px;font-size:.88rem;font-weight:500;text-decoration:none;cursor:pointer;transition:all .25s}
.btn-outline:hover{background:var(--accent);color:#fff}
.menu-toggle{display:none;background:none;border:none;font-size:1.4rem;cursor:pointer;color:var(--text)}

/* ===== Hero ===== */
.hero{min-height:100vh;display:flex;align-items:center;padding-top:80px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-10%;right:-15%;width:500px;height:500px;background:var(--deco);border-radius:50%;filter:blur(100px);pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-10%;left:-10%;width:400px;height:400px;background:var(--deco);border-radius:50%;filter:blur(80px);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:1}
.hero-text .hero-label{display:inline-block;font-size:.78rem;font-weight:500;letter-spacing:2px;color:var(--accent);margin-bottom:16px;padding:6px 16px;background:var(--bg-alt);border-radius:100px}
.hero-text h1{margin-bottom:20px}
.hero-text h1 em{font-style:normal;color:var(--accent)}
.hero-text .hero-desc{font-size:1.08rem;margin-bottom:28px;max-width:480px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-image{position:relative;display:flex;justify-content:center}
.hero-image .img-placeholder{width:100%;max-width:420px;aspect-ratio:3/4;border-radius:24px;background:linear-gradient(135deg,var(--accent-l),var(--accent));display:flex;align-items:flex-end;justify-content:center;overflow:hidden;position:relative}
.hero-image .img-placeholder::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.25),transparent 50%)}
.hero-image .img-placeholder span{position:relative;z-index:1;color:rgba(255,255,255,.7);font-size:.85rem;padding:20px;text-align:center}
.hero-stats{display:flex;gap:36px;margin-top:36px}
.hero-stat{text-align:center}
.hero-stat .num{font-family:var(--ff-serif);font-size:2rem;font-weight:700;color:var(--accent);line-height:1}
.hero-stat .num small{font-size:.9rem;font-weight:400}
.hero-stat .label{font-size:.8rem;color:var(--text-3);margin-top:4px}

/* ===== About Preview ===== */
.about-preview-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:60px;align-items:center}
.about-img-wrap{position:relative}
.about-img-placeholder{width:100%;aspect-ratio:4/5;border-radius:20px;background:linear-gradient(160deg,var(--bg-alt),var(--accent-l));display:flex;align-items:center;justify-content:center}
.about-img-placeholder span{color:var(--text-3);font-size:.9rem}
.about-content h2{margin-bottom:20px}
.about-content .lead{font-size:1.08rem;margin-bottom:24px}
.about-highlights{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.highlight-item{padding:16px;background:var(--bg-card);border-radius:12px;border:1px solid var(--border)}
.highlight-item .hi-num{font-family:var(--ff-serif);font-size:1.5rem;font-weight:700;color:var(--accent)}
.highlight-item .hi-label{font-size:.85rem;color:var(--text-3);margin-top:2px}

/* ===== Techniques ===== */
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tech-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:32px 28px;transition:all .3s}
.tech-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px var(--shadow);border-color:var(--accent-l)}
.tech-icon{width:48px;height:48px;border-radius:12px;background:var(--bg-alt);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:20px}
.tech-card h3{margin-bottom:10px;font-size:1.15rem}
.tech-card p{font-size:.92rem}
.tech-card .tech-link{display:inline-flex;align-items:center;gap:4px;margin-top:16px;font-size:.88rem;color:var(--accent);text-decoration:none;cursor:pointer}
.tech-card .tech-link:hover{text-decoration:underline}

/* ===== Philosophy ===== */
.philosophy-content{max-width:700px;margin:0 auto;text-align:center}
.philosophy-content blockquote{font-family:var(--ff-serif);font-size:clamp(1.6rem,3.5vw,2.4rem);color:var(--text);line-height:1.7;margin-bottom:24px;position:relative;padding:0 20px}
.philosophy-content blockquote::before{content:'\201C';position:absolute;left:-10px;top:-20px;font-size:4rem;color:var(--accent-l);font-family:Georgia,serif}
.philosophy-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:32px}
.philosophy-tags span{padding:8px 18px;background:var(--bg-card);border:1px solid var(--border);border-radius:100px;font-size:.88rem;color:var(--text-2)}

/* ===== Cases Preview ===== */
.cases-grid{columns:3;column-gap:16px}
.case-card{break-inside:avoid;margin-bottom:16px;border-radius:12px;overflow:hidden;cursor:pointer;transition:all .3s;background:var(--bg-card);border:1px solid var(--border)}
.case-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px var(--shadow)}
.case-card img{width:100%;height:auto;display:block}
.case-card .case-label{padding:12px 14px;font-size:.85rem;color:var(--text-2)}
.case-card .case-label strong{color:var(--text);display:block;margin-bottom:2px;font-size:.9rem}

/* ===== CTA ===== */
.cta-section{text-align:center;padding:100px 0}
.cta-section h2{margin-bottom:16px}
.cta-section p{margin-bottom:32px;max-width:500px;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}

/* ===== Kepu List ===== */
.kepu-search-section{text-align:center;margin-bottom:40px}
.kepu-search-box{position:relative;max-width:600px;margin:0 auto 20px}
.kepu-search-box input{width:100%;padding:14px 20px 14px 48px;border:1px solid var(--border);border-radius:12px;font-size:1rem;background:var(--bg-card);transition:all .3s}
.kepu-search-box input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(91,106,196,.1)}
.kepu-search-box::before{content:"🔍";position:absolute;left:16px;top:50%;transform:translateY(-50%);font-size:1.1rem}
.kepu-hot-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:16px}
.kepu-hot-tag{padding:6px 16px;background:var(--bg-alt);border:1px solid var(--border);border-radius:20px;font-size:.85rem;color:var(--text-2);cursor:pointer;transition:all .3s;text-decoration:none}
.kepu-hot-tag:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.kepu-quote-featured-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:32px;margin-bottom:48px;align-items:stretch}
.kepu-quote-featured-grid>*{min-width:0}
.kepu-doctor-quote{border-radius:20px;padding:40px;display:flex;flex-direction:column;justify-content:center}
.kepu-doctor-quote .quote-label{font-size:1.5rem;color:var(--accent);margin-bottom:20px;font-weight:700}
.kepu-doctor-quote .quote-icon{margin-bottom:16px;display:block}
.kepu-doctor-quote .quote-text{font-size:1.05rem;line-height:1.8;color:var(--text-2)}
.kepu-featured{background:var(--bg-card);border:1px solid var(--border);border-radius:20px;overflow:hidden;display:grid;grid-template-columns:1fr 1fr;cursor:pointer;transition:all .3s;width:100%;height:100%;text-decoration:none;color:inherit}
.kepu-featured:hover{box-shadow:0 12px 32px var(--shadow);transform:translateY(-2px)}
.kepu-featured-img{background:linear-gradient(135deg,var(--accent-l),var(--bg-alt));min-width:0;overflow:hidden;position:relative}
.kepu-featured-img img,.kepu-featured-img svg{width:100%;height:100%;display:block;object-fit:cover;position:absolute;top:0;left:0}
.kepu-featured-body{padding:32px;display:flex;flex-direction:column;justify-content:center;min-width:0}
.kepu-featured-body .featured-label{display:inline-block;padding:4px 14px;background:var(--accent);color:#fff;border-radius:20px;font-size:.8rem;font-weight:600;margin-bottom:16px;width:fit-content}
.kepu-featured-body h2{font-size:1.25rem;margin-bottom:12px;line-height:1.4}
.kepu-featured-body p{font-size:.92rem;color:var(--text-3);line-height:1.6;margin-bottom:20px;flex:1}
.kepu-featured-body .featured-author{font-size:.85rem;color:var(--text-3);margin-bottom:16px}
.kepu-featured-body .read-more{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-size:.9rem;font-weight:500;padding:10px 24px;border:1px solid var(--accent);border-radius:100px;width:fit-content;transition:all .3s}
.kepu-featured-body .read-more:hover{background:var(--accent);color:#fff}
.kepu-category-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;justify-content:center}
.kepu-category-tab{padding:8px 20px;background:var(--bg-alt);border:1px solid var(--border);border-radius:24px;font-size:.9rem;color:var(--text-2);cursor:pointer;transition:all .3s}
.kepu-category-tab:hover,.kepu-category-tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.kepu-section-title{font-size:1.5rem;font-weight:700;color:var(--text);margin-bottom:32px;text-align:center}
.kepu-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.kepu-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;overflow:hidden;transition:all .3s;cursor:pointer;text-decoration:none;color:inherit}
.kepu-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px var(--shadow)}
.kepu-card-img{aspect-ratio:16/10;background:linear-gradient(135deg,var(--accent-l),var(--bg-alt));display:flex;align-items:center;justify-content:center;overflow:hidden}
.kepu-card-img svg{width:100%;height:100%;display:block}
.kepu-card-img img{width:100%;height:100%;object-fit:cover;display:block}
.kepu-card-img span{font-size:.85rem;color:var(--text-3)}
.kepu-card-body{padding:24px}
.kepu-card-body h3{font-size:1.05rem;margin-bottom:8px}
.kepu-card-body p{font-size:.88rem;color:var(--text-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.kepu-card-date{font-size:.8rem;color:var(--text-3);margin-top:8px;opacity:0.7}
.kepu-card-body .read-more{display:inline-flex;align-items:center;gap:4px;margin-top:12px;font-size:.85rem;color:var(--accent);text-decoration:none}
.kepu-topics{margin-top:48px}
.kepu-topics-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.kepu-topics-header h2{font-size:1.3rem}
.kepu-topics-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.kepu-topic-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:16px;text-align:center;cursor:pointer;transition:all .3s;text-decoration:none;color:inherit}
.kepu-topic-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px var(--shadow);border-color:var(--accent)}
.kepu-topic-icon{width:48px;height:48px;margin:0 auto 12px;background:linear-gradient(135deg,var(--accent-l),var(--accent));border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.3rem}
.kepu-topic-card h3{font-size:.9rem;margin-bottom:6px}
.kepu-topic-card p{font-size:.75rem;color:var(--text-3);margin-bottom:8px}
.kepu-topic-count{font-size:.8rem;color:var(--accent);font-weight:500}

/* ===== Article ===== */
.article-hero{padding-top:120px;padding-bottom:40px}
.article-hero .container{max-width:800px}
.article-content .container{max-width:800px}
.article-nav .container{max-width:800px;display:flex;justify-content:space-between;gap:16px}
.article-meta{display:flex;align-items:center;gap:12px;margin-bottom:20px;font-size:.88rem;color:var(--text-3)}
.article-meta .tag{padding:4px 12px;background:var(--bg-alt);border-radius:100px;color:var(--accent);font-size:.8rem}
.article-hero h1{font-size:clamp(1.8rem,4vw,2.6rem);margin-bottom:16px}
.article-hero .article-desc{font-size:1.05rem;color:var(--text-2)}
.article-hero-img{margin-top:32px;border-radius:16px;overflow:hidden;box-shadow:0 8px 32px var(--shadow)}
.article-hero-img img{width:100%;height:auto;display:block}
.article-body{padding:40px 0 80px}
.article-body .container{max-width:800px}
.article-body h2{margin:40px 0 16px;font-size:1.4rem}
.article-body h3{margin:28px 0 12px;font-size:1.15rem}
.article-body p{margin-bottom:16px;font-size:1rem}
.article-body ul,.article-body ol{margin:12px 0 20px 24px;color:var(--text-2)}
.article-body li{margin-bottom:8px}
.article-body .callout{padding:20px 24px;background:var(--bg-alt);border-left:3px solid var(--accent);border-radius:0 12px 12px 0;margin:24px 0;font-size:.95rem}
.article-nav{padding:40px 0;border-top:1px solid var(--border)}
.article-nav .container{max-width:800px;display:flex;justify-content:space-between;gap:16px}
.article-nav a{font-size:.9rem;color:var(--accent);text-decoration:none}
.article-nav a:hover{text-decoration:underline}

/* ===== Guide ===== */
.guide-hero{padding-top:120px;padding-bottom:60px}
.guide-steps-horizontal{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;max-width:1200px;margin:0 auto;padding:20px 0}
.guide-step-h{flex:1;text-align:center;position:relative}
.guide-step-h:not(:last-child)::after{content:'→';position:absolute;top:35px;right:-18px;font-size:1.5rem;color:var(--accent);opacity:0.6;transform:translateY(-50%)}
.guide-step-circle{width:70px;height:70px;border-radius:50%;background:linear-gradient(135deg,var(--bg-alt) 0%,var(--bg-card) 100%);border:2px solid var(--accent-l);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-family:var(--ff-serif);font-size:1.5rem;font-weight:700;color:var(--accent);box-shadow:0 4px 12px rgba(0,0,0,0.08)}
.guide-step-h h3{font-size:1.1rem;font-weight:700;margin-bottom:10px;color:var(--text)}
.guide-step-h p{font-size:.88rem;color:var(--text-2);line-height:1.6}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border);padding:20px 0}
.faq-item summary{font-weight:600;cursor:pointer;color:var(--text);font-size:1rem;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:'+';font-size:1.3rem;color:var(--accent);transition:transform .2s}
.faq-item[open] summary::after{content:'−'}
.faq-item p{margin-top:12px;font-size:.95rem}

/* ===== About Page ===== */
.about-hero{padding-top:120px;padding-bottom:60px}
.about-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:60px;align-items:stretch}
.about-grid>div:first-child img{width:100%;height:100%;object-fit:cover;border-radius:20px;box-shadow:0 12px 40px var(--shadow)}
.about-info-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:28px}
.about-info-card h3{font-size:1.1rem;margin-bottom:16px;color:var(--text)}
.about-info-card p,.about-info-card ul{margin-bottom:0}
.about-info-card ul{margin:8px 0 0 20px;color:var(--text-2)}
.about-info-card li{margin-bottom:6px;font-size:.95rem}
.about-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px}
.about-detail h2{margin:32px 0 12px;font-size:1.3rem}
.about-detail h2:first-child{margin-top:0}
.about-detail p{margin-bottom:12px}
.about-detail ul{margin:8px 0 16px 20px;color:var(--text-2)}
.about-detail li{margin-bottom:6px;font-size:.95rem}
.info-table{width:100%;border-collapse:collapse;margin:12px 0}
.info-table td{padding:10px 16px;border-bottom:1px solid var(--border);font-size:.95rem}
.info-table td:first-child{color:var(--text-3);width:120px;white-space:nowrap}

/* ===== Footer ===== */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--border);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand h4{font-family:var(--ff-serif);font-size:1.1rem;margin-bottom:10px}
.footer-brand p{font-size:.88rem;color:var(--text-3);line-height:1.7}
.footer-col h5{font-size:.88rem;font-weight:600;color:var(--text);margin-bottom:14px;letter-spacing:.5px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{font-size:.88rem;color:var(--text-3);text-decoration:none;transition:color .2s;cursor:pointer}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--border);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.footer-bottom p{font-size:.8rem;color:var(--text-3)}
.footer-disclaimer{font-size:.78rem !important;color:var(--text-3);margin-top:12px;font-style:italic}

/* ===== Modal ===== */
.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.5);display:none;align-items:center;justify-content:center;z-index:10000;backdrop-filter:blur(4px)}
.modal-overlay.active{display:flex}
.modal-content{background:#fff;border-radius:16px;padding:40px;max-width:420px;width:90%;position:relative;box-shadow:0 20px 60px rgba(0,0,0,0.15);animation:modalSlideIn .3s ease}
@keyframes modalSlideIn{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}
.modal-close{position:absolute;top:16px;right:16px;width:32px;height:32px;border:none;background:var(--bg-alt);border-radius:50%;cursor:pointer;font-size:1.2rem;color:var(--text-2);display:flex;align-items:center;justify-content:center;transition:all .2s}
.modal-close:hover{background:var(--border);color:var(--text)}
.modal-content h3{font-size:1.3rem;margin-bottom:16px;color:var(--text)}
.modal-content p{font-size:1rem;color:var(--text-2);line-height:1.7;margin-bottom:20px}
.modal-wechat{background:var(--bg-alt);border-radius:12px;padding:20px;text-align:center}
.modal-wechat .wechat-label{font-size:.88rem;color:var(--text-3);margin-bottom:8px}
.modal-wechat .wechat-number{font-size:1.5rem;font-weight:700;color:var(--accent);font-family:var(--ff-serif);letter-spacing:1px}

/* ===== Responsive ===== */
@media(max-width:768px){
 .hero-grid{grid-template-columns:1fr;text-align:center}
 .hero-text .hero-desc{margin-left:auto;margin-right:auto}
 .hero-actions{justify-content:center}
 .hero-image{order:-1}
 .hero-image img{max-width:300px !important}
 .hero-stats{justify-content:center}
 .about-preview-grid{grid-template-columns:1fr}
 .about-grid{grid-template-columns:1fr}
 .about-cards{grid-template-columns:1fr}
 .tech-grid{grid-template-columns:1fr 1fr}
 .kepu-grid{grid-template-columns:1fr 1fr}
 .kepu-topics-grid{grid-template-columns:1fr 1fr}
 .kepu-quote-featured-grid{grid-template-columns:1fr}
 .kepu-featured{grid-template-columns:1fr}
 .kepu-featured-img{min-height:220px}
 .kepu-doctor-quote{flex-direction:column;text-align:center;padding:24px;gap:20px}
 .kepu-doctor-quote .quote-avatar{width:80px;height:80px;font-size:1.5rem}
 .nav-links{display:none;position:fixed;top:70px;left:0;right:0;bottom:0;background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:32px;z-index:1001;overflow-y:auto}
 .nav-links.open{display:flex}
 .nav-links.open li{width:100%;text-align:center}
 .nav-links.open a{font-size:1.1rem;display:block;padding:12px 0}
 .nav-links.open .mobile-cta{margin-top:16px}
 .nav-links.open .mobile-cta a{display:inline-flex;padding:12px 32px}
 .menu-toggle{display:block}
 .btn-primary.nav-cta{display:none}
 .tech-grid,.kepu-grid,.kepu-topics-grid{grid-template-columns:1fr}
 .cases-grid{columns:1}
 .about-highlights{grid-template-columns:1fr}
 .guide-steps-horizontal{flex-direction:column;gap:32px}
 .guide-step-h:not(:last-child)::after{content:'↓';top:auto;bottom:-24px;right:50%;transform:translateX(50%)}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{flex-direction:column;text-align:center}
 .hero-stats{flex-wrap:wrap;gap:20px}
 .article-nav .container{flex-direction:column}
}