/* ===== 设计变量 ===== */
:root {
  --bg: #F3EFE6;
  --bg-deep: #16110B;
  --surface: #FFFCF5;
  --ink: #262019;
  --ink-2: #655E52;
  --line: #DED4C4;
  --accent: #C6924B;
  --accent-deep: #9A6E30;
  --ok: #2E6B4F;
  --error: #B4442A;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(30,25,18,.04);
  --shadow-md: 0 12px 32px rgba(30,25,18,.08);
  --space-section: clamp(64px, 9vw, 112px);
  --font-serif: "Noto Serif SC","Source Han Serif SC","SimSun",serif;
  --font-sans: "Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num: "Inter",system-ui,sans-serif;
}
/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--bg);color:var(--ink);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:color .25s ease}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--radius-sm)}
img{max-width:100%;display:block}
ul,ol{list-style:none}
input,select,textarea,button{font-family:inherit;font-size:inherit;color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius-md);font-weight:500;font-size:15px;line-height:1.2;cursor:pointer;transition:all .3s ease;border:none;white-space:nowrap}
.btn-primary{background:var(--accent);color:#1A140E}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-outline{background:transparent;border:1px solid rgba(255,255,255,.4);color:#fff}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:rgba(255,255,255,.06)}
.btn-sm{padding:9px 20px;font-size:14px}
.btn-full{width:100%}
/* ===== Section 通用 ===== */
.section{padding:var(--space-section) 0}
.section-header{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:48px}
.section-tag{display:inline-block;font-family:var(--font-num);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-deep);border:1px solid var(--line);border-radius:var(--radius-sm);padding:4px 12px;margin-bottom:14px;background:transparent}
.section-header h2{font-family:var(--font-serif);font-size:clamp(28px,4.5vw,44px);font-weight:900;line-height:1.25;color:var(--ink)}
.section-desc{max-width:420px;font-size:15px;color:var(--ink-2);line-height:1.75}
/* ===== Header 双层导航 ===== */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(22,17,11,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 1px 0 rgba(255,255,255,.06)}
.header-top{background:rgba(22,17,11,.98)}
.header-top-inner{display:flex;align-items:center;gap:24px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;flex-direction:column;line-height:1.2;flex-shrink:0}
.brand-text{font-family:var(--font-serif);font-size:20px;font-weight:900;color:#F3EFE6;letter-spacing:.02em}
.brand-sub{font-family:var(--font-num);font-size:10px;letter-spacing:.18em;color:rgba(255,255,255,.4);text-transform:uppercase;margin-top:2px}
.header-search{flex:1;max-width:280px;position:relative;margin-left:auto}
.header-search input{width:100%;padding:9px 36px 9px 14px;border-radius:var(--radius-md);border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);color:#F3EFE6;font-size:14px;transition:border-color .3s ease}
.header-search input::placeholder{color:rgba(255,255,255,.35)}
.header-search input:focus{outline:none;border-color:var(--accent)}
.header-search button{position:absolute;right:4px;top:50%;transform:translateY(-50%);background:none;border:none;color:rgba(255,255,255,.5);cursor:pointer;padding:6px 8px;font-size:14px}
.header-search button:hover{color:var(--accent)}
.header-cta{margin-left:auto;flex-shrink:0}
.nav-toggle{display:none;background:none;border:none;color:#F3EFE6;font-size:22px;cursor:pointer;width:44px;height:44px;align-items:center;justify-content:center}
.header-nav{border-top:1px solid rgba(255,255,255,.06)}
.nav-inner{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding-top:6px;padding-bottom:6px}
.nav-inner::-webkit-scrollbar{display:none}
.nav-link{display:inline-block;padding:8px 18px;border-radius:20px;font-size:14px;color:rgba(255,255,255,.7);white-space:nowrap;border:1px solid transparent;transition:all .25s ease}
.nav-link:hover{color:#fff;border-color:rgba(255,255,255,.2)}
.nav-link.active{background:var(--accent);color:#1A140E;font-weight:500}
/* ===== Hero ===== */
.hero{position:relative;min-height:max(680px,92vh);display:flex;flex-direction:column;justify-content:center;background:var(--bg-deep);overflow:hidden}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:.45}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(115deg,rgba(22,17,11,.92) 30%,rgba(22,17,11,.62) 60%,rgba(22,17,11,.45));}
.hero-grid-overlay{position:absolute;inset:0;background-image:linear-gradient(rgba(198,146,75,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(198,146,75,.07) 1px,transparent 1px);background-size:60px 60px;pointer-events:none}
.hero-inner{position:relative;z-index:3;padding-top:90px;padding-bottom:120px;max-width:760px;margin:0 auto 0 0}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#E6CDA4;border:1px solid rgba(198,146,75,.4);background:rgba(198,146,75,.12);padding:6px 16px;border-radius:20px;margin-bottom:24px;letter-spacing:.04em}
.hero-badge i{font-size:12px}
.hero h1{font-family:var(--font-serif);font-size:clamp(36px,6vw,64px);font-weight:900;line-height:1.2;color:#F3EFE6;margin-bottom:24px;letter-spacing:.01em}
.hero h1 .highlight{color:var(--accent)}
.hero-desc{font-size:clamp(15px,1.6vw,17px);line-height:1.9;color:rgba(243,239,230,.85);max-width:560px;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:56px}
.hero-corner{position:absolute;top:110px;right:40px;z-index:3;background:rgba(22,17,11,.85);border:1px solid var(--accent);border-radius:var(--radius-md);padding:18px 22px;text-align:center;box-shadow:var(--shadow-md);backdrop-filter:blur(6px)}
.hero-corner .corner-label{display:block;font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.55);text-transform:uppercase;margin-bottom:4px}
.hero-corner .corner-value{display:block;font-family:var(--font-serif);font-weight:700;color:var(--accent);font-size:18px;line-height:1.3}
.hero-corner .corner-sub{display:block;font-size:11px;color:rgba(255,255,255,.5);margin-top:2px}
.hero-stats{position:relative;z-index:3;background:rgba(22,17,11,.95);border-top:1px solid rgba(255,255,255,.08);padding:0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-item{padding:28px 24px;text-align:center;border-right:1px solid rgba(255,255,255,.08)}
.stat-item:last-child{border-right:none}
.stat-num{font-family:var(--font-num);font-size:clamp(36px,5vw,56px);font-weight:700;color:var(--accent);line-height:1.1;display:block}
.stat-label{display:block;font-size:13px;color:rgba(255,255,255,.55);margin-top:6px;letter-spacing:.04em}
/* ===== Features 卖点三连 ===== */
.features-section{background:var(--bg);padding-top:clamp(40px,6vw,72px);padding-bottom:0}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:48px 40px;box-shadow:var(--shadow-sm)}
.feature-card{text-align:center;padding:0 16px}
.feature-card i{font-size:32px;color:var(--accent);margin-bottom:16px;display:inline-block}
.feature-card h3{font-family:var(--font-serif);font-size:20px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.feature-card p{font-size:14px;color:var(--ink-2);line-height:1.7}
/* ===== Service ===== */
.service-section{background:var(--bg)}
.service-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.service-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:36px 32px;transition:border-color .3s ease,box-shadow .3s ease,transform .3s ease;position:relative;overflow:hidden}
.service-card::after{content:'';position:absolute;top:0;left:0;width:100%;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .35s ease}
.service-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.service-card:hover::after{transform:scaleX(1)}
.service-card:nth-child(2),.service-card:nth-child(4){margin-top:40px}
.service-card-tall{background:linear-gradient(145deg,var(--bg-deep),#241B12);border-color:transparent;color:#F3EFE6}
.service-card-tall h3{color:#F3EFE6}
.service-card-tall p{color:rgba(255,255,255,.7)}
.service-icon{width:52px;height:52px;border-radius:var(--radius-md);background:rgba(198,146,75,.1);display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:22px;color:var(--accent)}
.service-card-tall .service-icon{background:rgba(198,146,75,.2)}
.service-card h3{font-family:var(--font-serif);font-size:22px;font-weight:700;margin-bottom:12px;color:var(--ink)}
.service-card p{font-size:14px;color:var(--ink-2);line-height:1.8;margin-bottom:20px}
.service-link{font-size:14px;font-weight:500;color:var(--accent-deep);display:inline-flex;align-items:center;gap:6px;transition:gap .3s ease}
.service-link:hover{gap:10px;color:var(--accent)}
/* ===== Stats ===== */
.stats-section{background:var(--bg);position:relative}
.stats-section::before{content:'';position:absolute;top:0;right:0;width:120px;height:1px;background:var(--accent);opacity:.5}
.stats-layout{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
.stats-left h2{font-family:var(--font-serif);font-size:clamp(28px,4vw,40px);font-weight:900;line-height:1.3;margin-bottom:20px}
.stats-left p{color:var(--ink-2);font-size:15px;line-height:1.8;margin-bottom:28px;max-width:360px}
.stats-right{border-top:1px solid var(--line)}
.stat-row{display:grid;grid-template-columns:140px 1fr;gap:24px;padding:28px 0;border-bottom:1px solid var(--line);transition:background .3s ease}
.stat-row:hover{background:rgba(198,146,75,.04)}
.stat-row-num{font-family:var(--font-num);font-size:clamp(32px,4vw,52px);font-weight:700;color:var(--accent);line-height:1.1}
.stat-row-info h3{font-size:17px;font-weight:600;margin-bottom:6px;color:var(--ink)}
.stat-row-info p{font-size:14px;color:var(--ink-2);line-height:1.7}
/* ===== Case ===== */
.case-section{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.case-grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:auto auto;gap:24px}
.case-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;transition:border-color .3s ease,box-shadow .3s ease;display:flex;flex-direction:column}
.case-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md)}
.case-img{overflow:hidden;position:relative}
.case-img::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(22,17,11,.25),transparent 40%);opacity:0;transition:opacity .35s ease}
.case-card:hover .case-img::after{opacity:1}
.case-img img{width:100%;transition:transform .5s ease;object-fit:cover}
.case-card:hover .case-img img{transform:scale(1.05)}
.case-card-lg{grid-column:span 2;grid-row:span 2}
.case-card-lg .case-img{aspect-ratio:16/9}
.case-card-lg .case-img img{height:100%}
.case-card:not(.case-card-lg) .case-img{aspect-ratio:4/5}
.case-body{padding:20px 20px 24px;display:flex;flex-direction:column;flex:1}
.case-tag{display:inline-block;font-size:12px;color:var(--accent-deep);border:1px solid var(--line);border-radius:20px;padding:2px 12px;margin-bottom:10px;align-self:flex-start}
.case-card h3{font-family:var(--font-serif);font-size:18px;font-weight:700;margin-bottom:4px;color:var(--ink);transition:color .3s ease}
.case-card h3:hover{color:var(--accent-deep)}
.case-meta{font-size:13px;color:var(--ink-2);margin-bottom:8px}
.case-body p{font-size:14px;color:var(--ink-2);line-height:1.7}
/* ===== Plans ===== */
.plans-section{background:var(--bg)}
.plans-list{border-top:1px solid var(--line)}
.plan-row{display:grid;grid-template-columns:1.2fr 1.6fr auto auto;gap:32px;align-items:center;padding:36px 12px;border-bottom:1px solid var(--line);transition:background .3s ease}
.plan-row:hover{background:rgba(198,146,75,.05)}
.plan-head h3{font-family:var(--font-serif);font-size:20px;font-weight:700;margin-bottom:6px;color:var(--ink)}
.plan-head p{font-size:14px;color:var(--ink-2);line-height:1.6}
.plan-features{display:flex;flex-wrap:wrap;gap:8px}
.plan-features li{font-size:13px;color:var(--ink-2);border:1px solid var(--line);border-radius:20px;padding:4px 12px;background:var(--surface)}
.plan-price{font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--accent-deep);white-space:nowrap}
/* ===== Promo ===== */
.promo-section{background:var(--bg-deep);position:relative;overflow:hidden}
.promo-section::before{content:'';position:absolute;top:0;left:0;width:100%;height:2px;background:linear-gradient(90deg,transparent,var(--accent),transparent)}
.promo-section .section-tag{color:#E6CDA4;border-color:rgba(255,255,255,.15)}
.promo-section .section-header h2{color:#F3EFE6}
.promo-section .section-desc{color:rgba(255,255,255,.6)}
.promo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.promo-card{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-md);padding:40px 32px;text-align:center;transition:border-color .3s ease,transform .3s ease}
.promo-card:hover{border-color:var(--accent);transform:translateY(-3px)}
.promo-card.promo-featured{background:rgba(198,146,75,.08);border-color:rgba(198,146,75,.4)}
.promo-level{font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.5);text-transform:uppercase}
.promo-value{font-family:var(--font-num);font-size:clamp(36px,5vw,52px);font-weight:700;color:var(--accent);margin:12px 0 8px;line-height:1.1}
.promo-card p{font-size:14px;color:rgba(255,255,255,.6);margin-bottom:20px}
.promo-card ul{margin-bottom:24px;text-align:left}
.promo-card ul li{font-size:13px;color:rgba(255,255,255,.55);padding:5px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.promo-card ul li:last-child{border-bottom:none}
/* ===== FAQ ===== */
.faq-section{background:var(--surface)}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{list-style:none;display:flex;justify-content:space-between;align-items:center;padding:24px 20px;cursor:pointer;font-family:var(--font-serif);font-size:18px;font-weight:600;color:var(--ink);transition:color .3s ease;position:relative;padding-right:52px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';font-family:var(--font-num);font-weight:400;font-size:26px;color:var(--accent);position:absolute;right:20px;top:50%;transform:translateY(-50%);transition:transform .3s ease}
.faq-item[open] summary::after{content:'−'}
.faq-item summary:hover{color:var(--accent-deep)}
.faq-item[open] summary{background:rgba(198,146,75,.04)}
.faq-answer{padding:0 20px 24px;color:var(--ink-2);font-size:15px;line-height:1.8}
.faq-answer p{margin-bottom:12px}
.faq-answer p:last-child{margin-bottom:0}
/* ===== News ===== */
.news-section{background:var(--bg)}
.news-layout{display:grid;grid-template-columns:2fr 1fr;gap:48px}
.news-list{border-top:1px solid var(--line)}
.news-item{display:flex;align-items:baseline;gap:32px;padding:22px 8px;border-bottom:1px solid var(--line);transition:background .3s ease}
.news-item:hover{background:rgba(198,146,75,.04)}
.news-date{font-family:var(--font-num);font-size:13px;color:var(--ink-2);white-space:nowrap;flex-shrink:0}
.news-item h3{font-size:17px;font-weight:500;color:var(--ink);transition:color .3s ease;line-height:1.5}
.news-item h3:hover{color:var(--accent-deep)}
.news-side{display:flex;flex-direction:column;gap:24px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:28px}
.side-card h3{font-family:var(--font-serif);font-size:17px;font-weight:700;margin-bottom:10px;color:var(--ink)}
.side-card p{font-size:14px;color:var(--ink-2);line-height:1.75}
.side-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:500;color:var(--accent-deep);padding:16px 20px;border:1px solid var(--line);border-radius:var(--radius-md);justify-content:center;transition:all .3s ease}
.side-link:hover{border-color:var(--accent);color:var(--accent);gap:12px;background:var(--surface)}
/* ===== Contact ===== */
.contact-section{background:var(--surface);border-top:1px solid var(--line)}
.cta-banner{background:var(--bg-deep);border:1px solid rgba(198,146,75,.3);border-radius:var(--radius-md);padding:56px 48px;text-align:center;margin-bottom:64px;position:relative;overflow:hidden}
.cta-banner::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:200px;height:1px;background:var(--accent)}
.cta-banner h2{font-family:var(--font-serif);font-size:clamp(24px,3.5vw,34px);font-weight:900;color:#F3EFE6;margin-bottom:16px}
.cta-banner p{font-size:15px;color:rgba(255,255,255,.6);max-width:560px;margin:0 auto 28px;line-height:1.8}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.contact-info h3{font-family:var(--font-serif);font-size:22px;font-weight:700;margin-bottom:28px;color:var(--ink)}
.contact-info ul li{display:flex;align-items:flex-start;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.contact-info ul li i{color:var(--accent);font-size:18px;width:24px;text-align:center;margin-top:3px}
.contact-info ul li .info-label{font-size:13px;color:var(--ink-2);display:block}
.contact-info ul li .info-value{font-size:15px;font-weight:500;color:var(--ink)}
.contact-form{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-md);padding:40px}
.contact-form h3{font-family:var(--font-serif);font-size:20px;font-weight:700;margin-bottom:24px;color:var(--ink)}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:13px;font-weight:500;color:var(--ink-2);margin-bottom:6px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:var(--radius-md);background:transparent;color:var(--ink);font-size:14px;transition:border-color .3s ease,box-shadow .3s ease}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 2px 0 rgba(198,146,75,.2)}
.form-group textarea{resize:vertical;min-height:80px}
.form-tip{margin-top:14px;font-size:14px;display:none}
.form-tip.success{display:block;color:var(--ok)}
.form-tip.error{display:block;color:var(--error)}
/* ===== Footer ===== */
.site-footer{background:var(--bg-deep);color:rgba(255,255,255,.7);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:48px;padding-bottom:56px}
.footer-brand h3{font-family:var(--font-serif);font-size:20px;font-weight:900;color:#F3EFE6;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.5);max-width:280px}
.footer-col h4{font-size:14px;font-weight:600;color:#F3EFE6;margin-bottom:18px}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.5);padding:4px 0;transition:color .3s ease}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:14px;color:rgba(255,255,255,.5);padding:4px 0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;font-size:13px;color:rgba(255,255,255,.35)}
.footer-bottom .container{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
/* ===== 响应式 ===== */
@media(max-width:992px){
  .stats-layout{grid-template-columns:1fr;gap:40px}
  .case-grid{grid-template-columns:1fr 1fr}
  .case-card-lg{grid-column:span 2}
  .plan-row{grid-template-columns:1fr 1fr;gap:16px}
  .plan-price{text-align:right}
  .promo-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .contact-grid{grid-template-columns:1fr;gap:40px}
  .news-layout{grid-template-columns:1fr}
}
@media(max-width:768px){
  .container{padding:0 16px}
  .header-top-inner{flex-wrap:wrap}
  .header-search{order:3;flex:100%;max-width:none;margin-top:8px}
  .header-cta{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .header-nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg-deep);border-top:1px solid rgba(255,255,255,.06)}
  .header-nav.open{display:block}
  .nav-inner{flex-direction:column;align-items:stretch;padding:16px;gap:8px;overflow:visible}
  .nav-link{width:100%;text-align:center;padding:14px;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-md);color:rgba(255,255,255,.8);font-size:15px}
  .nav-link.active{background:var(--accent);color:#1A140E;border-color:var(--accent)}
  .nav-link:not(.active):hover{border-color:var(--accent);color:#fff}
  .hero{min-height:auto;padding-bottom:0}
  .hero-inner{padding-top:60px;padding-bottom:80px;text-align:center;margin:0}
  .hero h1{font-size:clamp(30px,8vw,40px)}
  .hero-desc{max-width:100%;font-size:15px}
  .hero-actions{justify-content:center}
  .hero-corner{position:static;max-width:180px;margin:0 auto 32px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat-item:nth-child(2){border-right:none}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid rgba(255,255,255,.08)}
  .service-grid{grid-template-columns:1fr}
  .service-card:nth-child(2),.service-card:nth-child(4){margin-top:0}
  .features-grid{grid-template-columns:1fr;padding:32px 24px}
  .case-grid{grid-template-columns:1fr}
  .case-card-lg{grid-column:span 1}
  .plan-row{grid-template-columns:1fr;text-align:left}
  .plan-price{text-align:left}
  .promo-grid{grid-template-columns:1fr}
  .section-header{flex-direction:column;align-items:flex-start;gap:16px}
  .footer-grid{grid-template-columns:1fr}
  .contact-form{padding:28px}
  .cta-banner{padding:40px 24px}
  .news-item{flex-direction:column;gap:6px}
}
@media(max-width:520px){
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat-item{border-right:none}
  .hero-actions .btn{flex:1;min-width:120px;text-align:center}
  .footer-bottom .container{flex-direction:column;align-items:center;text-align:center}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

:root {
  --bg: #F3EFE6;
  --bg-deep: #16110B;
  --surface: #FFFCF5;
  --ink: #262019;
  --ink-2: #655E52;
  --line: #DED4C4;
  --accent: #C6924B;
  --accent-deep: #9A6E30;
  --ok: #2E6B4F;
  --error: #B4442A;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(30,25,18,.04);
  --shadow-md: 0 12px 32px rgba(30,25,18,.08);
  --space-section: clamp(64px, 9vw, 112px);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: "Inter", system-ui, sans-serif;
  --header-h: 118px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--ink); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--accent-deep); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: 14px; color: var(--ink); }
ul, ol { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.3;
  font-weight: 700;
  color: var(--ink);
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.section { padding: var(--space-section) 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 48px; flex-wrap: wrap; }
.eyebrow { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-deep); font-weight: 600; margin-bottom: 12px; }
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--accent); }
.section-title { font-size: clamp(28px, 4.5vw, 44px); font-weight: 900; letter-spacing: .01em; }
.section-lead { max-width: 420px; color: var(--ink-2); font-size: 15px; line-height: 1.8; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: all .3s ease-out;
  text-align: center;
}

.btn-primary { background-color: var(--accent); color: #2A2118; }
.btn-primary:hover { background-color: var(--accent-deep); color: #FFF; transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-outline { background: transparent; border-color: rgba(243,239,230,.55); color: var(--bg); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(198,146,75,.08); }
.btn-outline-dark { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-outline-dark:hover { border-color: var(--accent-deep); color: var(--accent-deep); }
.btn-sm { padding: 8px 18px; font-size: 14px; }

.tea-badge, .badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  letter-spacing: .06em;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-2);
  white-space: nowrap;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(22,17,11,.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(222,212,196,.18);
}

.header-top { border-bottom: 1px solid rgba(222,212,196,.12); }
.header-top-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 12px 20px; height: 64px; }

.brand { display: flex; flex-direction: column; line-height: 1.1; flex-shrink: 0; }
.brand-text { font-family: var(--font-serif); font-size: 21px; font-weight: 900; color: var(--bg); letter-spacing: .03em; }
.brand-sub { font-family: var(--font-num); font-size: 10px; letter-spacing: .28em; color: rgba(243,239,230,.58); margin-top: 2px; text-transform: uppercase; }

.header-search { display: flex; align-items: center; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius-md); overflow: hidden; width: 240px; max-width: 30vw; transition: border-color .3s ease; }
.header-search:focus-within { border-color: var(--accent); }
.header-search input { flex: 1; min-width: 0; background: transparent; border: none; padding: 8px 12px; color: var(--bg); font-size: 14px; outline: none; }
.header-search input::placeholder { color: rgba(243,239,230,.5); }
.header-search button { width: 40px; color: var(--bg); opacity: .75; font-size: 14px; transition: opacity .3s ease; flex-shrink: 0; }
.header-search button:hover { opacity: 1; color: var(--accent); }

.header-cta { flex-shrink: 0; }

.nav-toggle { display: none; font-size: 20px; color: var(--bg); padding: 8px; }

.nav-inner { display: flex; align-items: center; gap: 4px; overflow-x: auto; scrollbar-width: none; padding: 0 20px; min-height: 52px; }
.nav-inner::-webkit-scrollbar { display: none; }

.nav-link {
  display: block;
  padding: 10px 18px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(243,239,230,.78);
  white-space: nowrap;
  border: 1px solid transparent;
  transition: all .3s ease-out;
}
.nav-link:hover { color: var(--bg); background: rgba(255,255,255,.06); }
.nav-link.active { background: var(--accent); color: #2A2118; }

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  background: linear-gradient(rgba(22,17,11,.64), rgba(22,17,11,.58)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding: 70px 0 60px;
  min-height: clamp(280px, 36vh, 420px);
  display: flex;
  align-items: center;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(198,146,75,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(198,146,75,.07) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 2; }

.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(243,239,230,.65); margin-bottom: 20px; }
.breadcrumb a { color: rgba(243,239,230,.8); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { opacity: .5; }

.page-title {
  font-size: clamp(32px, 5vw, 54px);
  font-weight: 900;
  color: var(--bg);
  max-width: 760px;
  line-height: 1.25;
  letter-spacing: .02em;
}
.page-title .hl { color: var(--accent); }
.page-desc { margin-top: 18px; max-width: 680px; color: rgba(243,239,230,.82); font-size: 15px; line-height: 1.85; }

/* ===== Filter Bar ===== */
.filter-bar {
  position: sticky;
  top: 110px;
  z-index: 40;
  background: rgba(243,239,230,.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
}
.filter-inner { display: flex; align-items: center; gap: 8px; overflow-x: auto; scrollbar-width: none; }
.filter-inner::-webkit-scrollbar { display: none; }

.filter-btn {
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-2);
  border: 1px solid var(--line);
  background: transparent;
  white-space: nowrap;
  transition: all .3s ease-out;
}
.filter-btn:hover { border-color: var(--accent); color: var(--accent-deep); }
.filter-btn.active { background: var(--accent); border-color: var(--accent); color: #2A2118; }

/* ===== Tea Grid ===== */
.tea-section { padding: var(--space-section) 0 calc(var(--space-section) * 0.6); overflow: hidden; }
.tea-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.tea-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .3s ease-out, border-color .3s ease-out, box-shadow .3s ease-out;
  position: relative;
}
.tea-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s ease-out;
  z-index: 2;
}
.tea-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.tea-card:hover::before { transform: scaleX(1); }

.tea-media { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--line); }
.tea-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease-out; }
.tea-card:hover .tea-media img { transform: scale(1.05); }
.tea-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(22,17,11,.28) 0%, transparent 40%); }

.tea-badge { position: absolute; top: 12px; left: 12px; z-index: 2; background: rgba(22,17,11,.76); border-color: rgba(255,255,255,.2); color: var(--bg); backdrop-filter: blur(4px); }

.tea-body { padding: 20px 18px 22px; display: flex; flex-direction: column; flex: 1; }
.tea-title { font-size: 18px; font-weight: 700; margin-bottom: 10px; line-height: 1.4; transition: color .3s ease; }
.tea-title a { color: var(--ink); }
.tea-title a:hover { color: var(--accent-deep); }

.tea-meta { display: flex; flex-wrap: wrap; gap: 4px 12px; padding: 12px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: 12px; }
.tea-meta span { font-size: 13px; color: var(--ink-2); display: inline-flex; align-items: center; gap: 4px; }
.tea-meta i { color: var(--accent); font-size: 12px; width: 14px; text-align: center; }

.tea-desc { font-size: 14px; color: var(--ink-2); line-height: 1.7; margin-bottom: 16px; flex: 1; }

.tea-footer { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.tea-price { font-size: 13px; color: var(--ink-2); }
.tea-price strong { font-family: var(--font-num); font-size: 16px; color: var(--accent-deep); font-weight: 600; }

/* ===== Guide Bar ===== */
.guide-bar {
  margin: 0 0 var(--space-section);
  background: rgba(198,146,75,.1);
  border: 1px solid rgba(198,146,75,.28);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.guide-bar p { font-size: 15px; color: var(--ink); display: flex; align-items: center; gap: 10px; }
.guide-bar p i { color: var(--accent); }
.guide-bar a { color: var(--accent-deep); font-weight: 500; border-bottom: 1px solid var(--accent); padding-bottom: 1px; }
.guide-bar a:hover { color: var(--accent); border-color: var(--accent); }

/* ===== Slim CTA ===== */
.cta-slim {
  background: var(--bg-deep);
  border: 1px solid rgba(198,146,75,.35);
  border-radius: var(--radius-lg);
  padding: clamp(36px, 5vw, 56px);
  margin-bottom: var(--space-section);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-slim::before {
  content: "";
  position: absolute;
  top: -60px; right: -60px;
  width: 180px; height: 180px;
  border: 1px solid rgba(198,146,75,.22);
  border-radius: 50%;
}
.cta-slim::after {
  content: "";
  position: absolute;
  bottom: -100px; left: 20%;
  width: 220px; height: 220px;
  border: 1px solid rgba(198,146,75,.12);
  border-radius: 50%;
}
.cta-content { position: relative; z-index: 2; max-width: 420px; }
.cta-content h2 { color: var(--bg); font-size: clamp(24px, 3.5vw, 36px); font-weight: 900; margin-bottom: 12px; }
.cta-content p { color: rgba(243,239,230,.7); font-size: 15px; line-height: 1.8; }

.cta-contact { position: relative; z-index: 2; display: flex; flex-direction: column; gap: 10px; }
.cta-contact-item { display: flex; align-items: center; gap: 10px; color: rgba(243,239,230,.85); font-size: 15px; }
.cta-contact-item i { color: var(--accent); width: 18px; text-align: center; }
.cta-actions { position: relative; z-index: 2; display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }

/* ===== Footer ===== */
.site-footer { background: var(--bg-deep); color: rgba(243,239,230,.72); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 44px; }

.footer-brand h3 { color: var(--bg); font-family: var(--font-serif); font-size: 24px; font-weight: 900; margin-bottom: 14px; }
.footer-brand p { font-size: 14px; line-height: 1.85; color: rgba(243,239,230,.6); max-width: 260px; }

.footer-col h4 { color: var(--bg); font-family: var(--font-sans); font-size: 14px; font-weight: 600; letter-spacing: .08em; margin-bottom: 18px; }
.footer-col a, .footer-col p { display: block; font-size: 14px; color: rgba(243,239,230,.6); margin-bottom: 10px; line-height: 1.6; }
.footer-col a:hover { color: var(--accent); }

.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 18px 0; font-size: 13px; color: rgba(243,239,230,.4); }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ===== scroll-margin ===== */
#top, #service, #plans, #case, #contact, #faq { scroll-margin-top: 130px; }

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .tea-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 992px) {
  .header-top-inner { padding: 12px 20px; }
  .nav-toggle { display: block; }
  .header-search { display: none; }
  .nav-inner { display: block; }
  .header-nav { display: none; max-height: 0; overflow: hidden; transition: max-height .4s ease; background: var(--bg-deep); border-top: 1px solid rgba(222,212,196,.12); }
  .header-nav.open { display: block; max-height: 520px; }
  .nav-inner { overflow: visible; flex-direction: column; align-items: stretch; padding: 12px 20px; gap: 4px; }
  .nav-link { padding: 13px 18px; border-radius: var(--radius-md); }

  .filter-bar { top: 0; }
  .tea-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .cta-slim { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .header-top-inner { padding: 10px 16px; }
  .brand-text { font-size: 18px; }
  .header-cta { display: none; }

  .page-hero { padding: 56px 0 48px; }
  .breadcrumb { font-size: 12px; }

  .page-title { font-size: clamp(28px, 7vw, 38px); }
  .page-desc { font-size: 14px; }

  .filter-bar { top: 0; }
  .filter-inner { gap: 6px; }
  .filter-btn { padding: 6px 14px; font-size: 13px; }

  .tea-grid { grid-template-columns: 1fr; }

  .guide-bar { padding: 16px 18px; }
  .guide-bar p { font-size: 14px; }

  .cta-slim { padding: 28px 20px; }
  .cta-content h2 { font-size: 24px; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom .container { flex-direction: column; align-items: center; text-align: center; }
}

@media (max-width: 520px) {
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .section-title { font-size: 26px; }
  .cta-actions { width: 100%; }
  .cta-actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}