:root{
  --ink:#16211d; --muted:#6c756f; --cream:#f5f1e9; --paper:#fbfaf7; --line:#d9d6cf; --accent:#b95b43; --green:#31463d; --gold:#c79b55;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,"Segoe UI",Roboto,sans-serif;
  --serif:Georgia,"Songti SC","Source Han Serif SC",serif;
  --latin:"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box} html{scroll-behavior:smooth;-webkit-text-size-adjust:100%} body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased} a{color:inherit;text-decoration:none} img{max-width:100%;height:auto;display:block}
.container{width:min(1180px,92vw);margin:0 auto}
.nav{position:sticky;top:0;z-index:20;background:rgba(251,250,247,.9);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(217,214,207,.75)}
.navin{height:76px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{font-size:24px;line-height:1;font-weight:800;letter-spacing:-.06em;white-space:nowrap}.logo span{font-family:var(--serif);font-style:italic;font-weight:600;color:var(--accent);margin-left:7px}
.links{display:flex;gap:28px;font-size:14px;color:#56615b}.links a:hover{color:var(--ink)}
.navcta{font-size:13px;padding:11px 15px;border:1px solid var(--ink);border-radius:999px;white-space:nowrap}

/* ---- 01 Hero ---- */
.hero{padding:76px 0 42px}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:46px;align-items:center}
.eyebrow{font-family:var(--latin);font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:20px}
.hero h1{font-size:clamp(54px,7.4vw,96px);line-height:.98;font-weight:800;letter-spacing:-.07em;margin:0}
.hero .lede{font-size:clamp(19px,2.1vw,25px);font-weight:600;line-height:1.5;letter-spacing:-.02em;margin:20px 0 0;max-width:520px}
.hero .sub{font-size:16px;line-height:1.9;color:var(--muted);max-width:520px;margin:16px 0 0}
.hero .stand{display:flex;gap:10px;align-items:flex-start;margin-top:26px;padding:15px 17px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.6);max-width:520px}
.hero .stand b{color:var(--accent);font-weight:700;flex:none}
.hero .stand p{margin:0;font-size:13.5px;line-height:1.75;color:var(--muted)}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 19px;border-radius:999px;font-size:14px;font-weight:700}.btn.dark{background:var(--ink);color:#fff}.btn.light{border:1px solid var(--ink)}
.hero-visual{position:relative;border-radius:34px;overflow:hidden;aspect-ratio:1400/1300;align-self:start;background:linear-gradient(145deg,#e9e5db,#cfcabf)}
.hero-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-visual .scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,24,21,.46) 0,rgba(18,24,21,.28) 46px,rgba(18,24,21,0) 112px),linear-gradient(0deg,rgba(18,24,21,.46) 0,rgba(18,24,21,.28) 48px,rgba(18,24,21,0) 124px)}
.hero-visual .tag{position:absolute;left:26px;top:24px;z-index:2;font-family:var(--latin);font-weight:700;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.6),0 2px 16px rgba(0,0,0,.5)}
.hero-visual .pin{position:absolute;left:26px;bottom:26px;z-index:2;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.6),0 2px 16px rgba(0,0,0,.55)}
.hero-visual .pin b{display:block;font-size:26px;font-weight:800;letter-spacing:-.03em}
.hero-visual .pin span{font-family:var(--latin);font-size:11px;letter-spacing:.18em;text-transform:uppercase;opacity:.85}
.kwbar{margin-top:34px;display:flex;flex-wrap:wrap;gap:1px;background:var(--line);border:1px solid var(--line)}
.kwbar a{flex:1 1 200px;background:var(--paper);padding:16px 20px;font-size:15px;font-weight:700;display:flex;justify-content:space-between;align-items:center;gap:10px;transition:.2s}
.kwbar a:hover{background:#fff}
.kwbar a i{font-family:var(--latin);font-style:normal;font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.1em}

/* ---- 通用版式 ---- */
.section{padding:78px 0}.section.alt{background:var(--cream)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:32px}
.kicker{font-family:var(--latin);font-size:11px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--accent)}
.section h2{font-size:clamp(33px,4.3vw,54px);line-height:1.05;font-weight:800;letter-spacing:-.055em;margin:8px 0 0}
.section-head p{max-width:390px;color:var(--muted);line-height:1.75;margin:0}
.group-label{display:flex;align-items:center;gap:14px;margin:8px 0 18px}
.group-label b{font-size:15px;font-weight:700;white-space:nowrap}
.group-label i{font-family:var(--latin);font-style:normal;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:700}
.group-label:after{content:'';flex:1;height:1px;background:var(--line)}

/* ---- 02 决策工具 ---- */
.decide{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
.decide-main{background:var(--green);color:#fff;border-radius:28px;padding:38px;min-height:300px;display:flex;flex-direction:column;justify-content:space-between}
.decide-main h3{font-size:32px;line-height:1.32;margin:0;letter-spacing:-.04em;max-width:440px}
.decide-main p{color:rgba(255,255,255,.74);line-height:1.8;max-width:460px;margin:0 0 22px}
.decide-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-content:start}
.decide-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 18px 16px;display:flex;flex-direction:column;justify-content:space-between;gap:14px;min-height:104px;transition:.22s}
.decide-item:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(22,33,29,.08)}
.decide-item small{font-family:var(--latin);font-weight:700;font-size:11px;letter-spacing:.14em;color:var(--accent)}
.decide-item strong{font-size:16px;line-height:1.35}
.decide-item .go{font-family:var(--latin);font-weight:700;font-size:14px;color:var(--accent)}

/* ---- 03 专题 ---- */
.topics{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.topic{border:1px solid var(--line);border-radius:24px;padding:26px;background:rgba(255,255,255,.7);display:flex;flex-direction:column}
.topic .num{font-family:var(--latin);font-size:34px;font-weight:700;color:rgba(22,33,29,.12);line-height:1}
.topic h3{font-size:22px;margin:14px 0 10px;letter-spacing:-.03em}
.topic ul{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:8px}
.topic li{position:relative;padding-left:14px;font-size:13.5px;line-height:1.7;color:var(--muted)}
.topic li:before{content:'';position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--accent);opacity:.6}
.topic a{margin-top:auto;font-size:13px;font-weight:700;color:var(--accent)}
.topic a:after{content:' →'}

/* ---- 04 长沙配镜区域示意图（2026-09-14 重做 · v3：SVG 真方位图 + HTML 文字图例）
   旧版问题：① 径向渐变 + 方格网 + 3 层同心圆 + pill 投影 = 5 层无效装饰
             ② 同心圆是"辐射半径"的视觉暗示，却没有任何数据含义 —— 视觉在撒谎
             ③ 方位全错：岳麓区其实在湘江西岸，芙蓉/天心/雨花都在河东，旧版四角随机撒
             ④ 「区域 → 商圈 → 门店」三级收敛没画出来，门店落在哪个区看不出来
   v2（分栏卡片版）残留问题：文字块当色块用 → 读起来是"两列表格"而不是地图
   v3：图形与文字分离 —— SVG 只画地理（区域形状 / 湘江 / 地铁交叉 / 门店点位），
       文字全部移到右侧图例，两者都不再互相将就；SVG aria-hidden，语义由图例承载 */
.citymap{margin:0 0 26px;border:1px solid var(--line);border-radius:22px;background:#fff;overflow:hidden}
.citymap-hd{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;padding:20px 24px;border-bottom:1px solid var(--line)}
.citymap-hd b{font-size:17px;letter-spacing:-.025em}
.citymap-hd span{font-size:12.5px;color:var(--muted)}
.citymap-body{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,1fr)}
.citymap-fig{border-right:1px solid var(--line);background:var(--paper);padding:18px 16px;display:flex;align-items:center;justify-content:center}
.citymap-fig svg{display:block;width:100%;height:auto;max-width:520px}
.citymap-fig svg text{font-family:var(--sans)}
.citymap-legend{display:flex;flex-direction:column;justify-content:center;padding:24px 26px}
.lgd{display:grid;grid-template-columns:auto minmax(0,1fr);gap:0 12px;padding:12px 0;border-bottom:1px solid var(--line)}
.lgd:first-child{padding-top:0}
.lgd:last-child{border-bottom:0;padding-bottom:0}
.lgd b{font-size:14.5px;letter-spacing:-.02em;white-space:nowrap;display:inline-flex;align-items:center;gap:8px}
.lgd b:before{content:'';width:9px;height:9px;flex:none}
.lgd:not(.pin):not(.hub) b:before{background:#fff;border:1px solid var(--line);border-radius:3px}
.lgd.pin b:before{background:var(--accent);border-radius:50%}
.lgd.hub b:before{background:var(--gold);border-radius:1px;transform:rotate(45deg)}
.lgd span{font-size:12.5px;line-height:1.7;color:var(--muted)}
.citymap-ft{display:flex;align-items:center;gap:20px;flex-wrap:wrap;padding:15px 24px;border-top:1px solid var(--line);background:var(--paper);font-size:12.5px;color:var(--muted)}
.lg{display:inline-flex;align-items:center;gap:8px}
.lg:before{content:'';flex:none;width:10px;height:10px}
.lg.pin:before{background:var(--accent);border-radius:50%}
.lg.hub:before{background:var(--gold);border-radius:1px;transform:rotate(45deg)}
.lg.line:before{height:0;border-top:1px dashed var(--gold)}
.citymap-ft .dir{margin-left:auto;font-family:var(--latin);letter-spacing:.14em;font-size:11px;white-space:nowrap}
.citymap-note{margin:0 0 34px;font-size:14.5px;line-height:1.9;color:var(--muted);max-width:880px}
.spot{background:#fff;border:1px solid var(--line);border-radius:28px;padding:34px;display:grid;grid-template-columns:1.05fr .95fr;gap:30px;align-items:start}
.spot-tag{display:inline-block;padding:6px 13px;border-radius:999px;background:#f1e7dc;color:#6a543f;font-size:12px;font-weight:700;margin-bottom:14px}
.spot h3{font-size:30px;letter-spacing:-.045em;margin:0 0 12px}
.spot p{color:var(--muted);line-height:1.8;margin:0 0 14px}
.spot .info{display:grid;gap:0}
.info-row{display:flex;gap:14px;padding:13px 0;border-bottom:1px solid var(--line)}
.info-row:last-child{border-bottom:0}
.info-row b{width:60px;flex:none;font-size:13px}
.info-row span{color:#5f6a64;font-size:14px;line-height:1.65}
.bridge{margin-top:26px;border-left:2px solid var(--gold);padding:4px 0 4px 18px}
.bridge b{display:block;font-size:14px;margin-bottom:7px}
.bridge p{margin:0;color:var(--muted);line-height:1.8;font-size:14px}
.brandcase{display:flex;gap:18px;align-items:center;flex-wrap:wrap;margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}
.brandcase span{font-size:13px;color:var(--muted)}
.brandcase .btn{padding:11px 16px;font-size:13px}

/* ---- 05 FAQ ---- */
.faq{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.faq-item{background:var(--paper);padding:26px 28px;scroll-margin-top:96px}
.faq-item h3{font-size:17px;margin:0 0 10px;display:flex;gap:12px;align-items:baseline}
.faq-item h3 i{font-family:var(--latin);font-style:normal;font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.1em}
.faq-item p{margin:0 0 0 30px;color:var(--muted);line-height:1.85;font-size:14px}
.topic,.faq-item{scroll-margin-top:96px}

/* ---- footer ---- */
.footer{background:var(--ink);color:#fff;padding:52px 0 34px}
.footer-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:44px}
.footer h3{margin:0 0 12px;font-size:30px;font-weight:800;letter-spacing:-.05em}
.footer .fdesc{color:rgba(255,255,255,.64);line-height:1.8;max-width:520px;margin:0}
.fnav{display:grid;grid-template-columns:1fr 1fr;gap:12px 26px;margin:0;padding:0;list-style:none}
.fnav a{color:rgba(255,255,255,.8);font-size:14px;line-height:1.9}
.fnav a:hover{color:#fff}
.fmeta{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:26px}
.fmeta div{border-top:1px solid rgba(255,255,255,.14);padding-top:12px;color:rgba(255,255,255,.74);font-size:13px}
.fmeta b{display:block;color:#fff;font-size:13px;margin-bottom:6px;font-weight:700}
.fnote{margin-top:30px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);color:rgba(255,255,255,.52);font-size:12.5px;line-height:1.8}
.copyright{margin-top:16px;font-size:12px;color:rgba(255,255,255,.4);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
/* 备案号（ICP）：法定必须展示且可点。用与 .copyright 同色系的链接色，不抢视觉。 */
.copyright .fbeian a{color:rgba(255,255,255,.62);border-bottom:1px solid rgba(255,255,255,.24)}
.copyright .fbeian a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.5)}

@media(max-width:980px){
  .hero-grid,.decide,.spot,.footer-grid{grid-template-columns:1fr}
  .hero-visual{width:100%;aspect-ratio:1400/1300;min-height:300px}
  .topics{grid-template-columns:1fr 1fr}
  .section-head{align-items:flex-start;flex-direction:column}
  .decide-main{min-height:0}
}
@media(max-width:900px){
  .nav .container.navin{flex-wrap:wrap;height:auto;padding:12px 0;gap:10px}
  .links{display:flex;order:3;width:100%;gap:18px;font-size:13px;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap}
}
@media(max-width:620px){
  .hero{padding-top:48px}
  .hero h1{font-size:52px}
  .topics,.fmeta{grid-template-columns:1fr}
  .section{padding:60px 0}
  .faq-item{padding:22px 20px}.faq-item p{margin-left:0}
  /* 示意图：窄屏改为「图在上、图例在下」，SVG 等比缩放 */
  .citymap-body{grid-template-columns:1fr}
  .citymap-fig{border-right:0;border-bottom:1px solid var(--line);padding:14px 12px}
  .citymap-legend{padding:20px 18px}
  .citymap-hd{padding:16px 18px}
  .citymap-ft{padding:13px 18px;gap:16px}
  .citymap-ft .dir{margin-left:0}
}

/* ==================== 内页（专题枢纽 / 文章）==================== */
.crumbs{font-size:12.5px;color:var(--muted);padding:18px 0 0;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.crumbs a:hover{color:var(--ink)}
.crumbs i{font-style:normal;opacity:.45}
.pagehead{padding:20px 0 32px;border-bottom:1px solid var(--line)}
.pagehead h1{font-size:clamp(32px,4.4vw,52px);line-height:1.1;letter-spacing:-.05em;font-weight:800;margin:12px 0 0;max-width:900px}
.pagehead .lede{font-size:clamp(15.5px,1.65vw,19px);line-height:1.85;color:var(--muted);max-width:780px;margin:16px 0 0}
.pagehead .meta{font-size:12.5px;color:var(--muted);margin-top:16px;display:flex;gap:16px;flex-wrap:wrap}
.pagehead .meta b{font-weight:700;color:var(--ink)}

.artlist{border-top:1px solid var(--line);margin-top:8px}
.artlist a{display:flex;justify-content:space-between;align-items:baseline;gap:18px;padding:19px 2px;border-bottom:1px solid var(--line);transition:.18s}
.artlist a:hover{background:rgba(255,255,255,.75);padding-left:10px}
.artlist b{font-size:17.5px;font-weight:700;letter-spacing:-.02em}
.artlist em{font-style:normal;font-size:13.5px;color:var(--muted);flex:1;min-width:0}
.artlist i{font-family:var(--latin);font-style:normal;font-size:11.5px;color:var(--accent);letter-spacing:.08em;white-space:nowrap}
@media(max-width:680px){.artlist a{flex-direction:column;gap:6px}.artlist em{display:none}}

.prose{max-width:768px;font-size:16.5px;line-height:1.95;color:#2a332e}
.prose h2{font-size:clamp(21px,2.5vw,29px);line-height:1.3;letter-spacing:-.03em;margin:46px 0 14px;font-weight:800;color:var(--ink)}
.prose h3{font-size:18.5px;line-height:1.42;margin:30px 0 10px;font-weight:700;color:var(--ink)}
.prose p{margin:0 0 16px}
.prose ul{margin:0 0 18px;padding-left:20px}
.prose li{margin:9px 0}
.prose .note{border-left:3px solid var(--accent);padding:2px 0 2px 16px;margin:24px 0;color:var(--muted);font-size:15.5px}
.prose table{width:100%;border-collapse:collapse;font-size:15px;margin:22px 0}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:11px 10px;text-align:left;vertical-align:top}
.prose th{font-weight:700;background:rgba(245,241,233,.65)}

.relbox{margin-top:42px;border-top:1px solid var(--line);padding-top:22px}
.relbox h2{font-size:17px;font-weight:800;letter-spacing:-.02em;margin:0 0 14px}
.relbox ul{list-style:none;margin:0;padding:0;display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.relbox li{background:var(--paper)}
.relbox a{display:block;padding:14px 16px;font-size:15px}
.relbox a:hover{background:#fff}

.storecard{margin-top:44px;border:1px solid var(--line);background:var(--cream);padding:24px 26px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.storecard b{display:block;font-size:17px;font-weight:800;letter-spacing:-.02em}
.storecard p{margin:6px 0 0;font-size:14px;color:var(--muted);line-height:1.75;max-width:600px}
.storecard .acts{display:flex;gap:10px;flex-wrap:wrap}
.storecard .btn{padding:12px 17px;font-size:13.5px;white-space:nowrap}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin:26px 0}
.grid2 > div{background:var(--paper);padding:20px 22px}
.grid2 b{display:block;font-size:15.5px;font-weight:700;margin-bottom:8px}
.grid2 p{margin:0;font-size:14.5px;line-height:1.8;color:var(--muted)}
@media(max-width:760px){.grid2{grid-template-columns:1fr}}

/* 首页「最新指南」小模块 */
.latest{margin-top:28px;display:grid;grid-template-columns:1fr auto;gap:30px;align-items:start}
.latest-list{border-top:1px solid var(--line)}
.latest-list a{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:15px 2px;border-bottom:1px solid var(--line);font-size:15.5px;transition:.18s}
.latest-list a:hover{padding-left:8px;background:rgba(255,255,255,.75)}
.latest-list i{font-family:var(--latin);font-style:normal;font-size:11.5px;color:var(--accent);letter-spacing:.08em;white-space:nowrap}
.latest-more{align-self:start;font-size:14px;font-weight:700;white-space:nowrap;border-bottom:1.5px solid var(--ink);padding-bottom:3px;margin-top:6px}
@media(max-width:760px){.latest{grid-template-columns:1fr}.latest-more{margin-top:14px}}

/* 品牌归属标识（东哥 2026-09-15：AI 与访客都要能看出本站属于 ROAO眼镜） */
.brandbar{background:var(--ink);color:rgba(255,255,255,.86);font-size:12.5px;letter-spacing:.04em}
.brandbar .container{height:34px;display:flex;align-items:center;white-space:nowrap;overflow:hidden}
@media(max-width:620px){.brandbar{font-size:11.5px;letter-spacing:.02em}.brandbar .container{height:30px}}