/* =====================================================================
   标云影像 BYSC · 摄像摄影制作服务 + 影像器材商城 · 全局样式
   设计风格:暗房黑金 Darkroom Black-Gold
   主色:深炭黑(相机机身) + 镜头金圈 + 暖米白纸
   ===================================================================== */

/* ---------- 设计 Token ---------- */
:root{
  /* 墨色(深) */
  --ink:#14141A;
  --ink-2:#1F1F27;
  --ink-3:#2C2C36;
  --ink-4:#3A3A46;
  /* 纸色(浅) */
  --paper:#F6F2EA;
  --paper-2:#EDE7DB;
  --paper-3:#E2DAC9;
  --card:#FFFFFF;
  /* 金色主色 */
  --gold:#C8962E;
  --gold-dark:#A87A1E;
  --gold-light:#D9A84A;
  --gold-soft:#F3E7C8;
  /* 辅助色 */
  --crimson:#8E2A2A;        /* 暗房红 */
  --teal:#2E6E6A;           /* 青墨 */
  /* 语义色 */
  --success:#2E7D5B;
  --warn:#C77A1E;
  --danger:#B23A3A;
  /* 线条 */
  --line:#D9D2C4;
  --line-2:#C9C0AE;
  --line-soft:#E8E2D2;
  --border:#D9D2C4;
  --border-light:#E8E2D2;
  --border-dark:#3A3A46;
  /* 文字 */
  --text:#1A1A1F;
  --text-body:#3A3A42;
  --text-secondary:#6B6B75;
  --text-muted:#9A9AA3;
  --text-on-dark:#F6F2EA;
  --text-on-dark-muted:#B8B2A4;
  --text-gold:#A87A1E;
  /* 渐变 */
  --grad-gold:linear-gradient(135deg,#D9A84A 0%,#C8962E 50%,#A87A1E 100%);
  --grad-ink:linear-gradient(180deg,#1F1F27 0%,#14141A 100%);
  --grad-hero:radial-gradient(120% 90% at 80% 10%,#2C2C36 0%,#1F1F27 45%,#14141A 100%);
  --grad-gold-soft:linear-gradient(135deg,#F3E7C8 0%,#E8D49B 100%);
  /* 阴影 */
  --shadow-xs:0 1px 2px rgba(20,20,26,.05);
  --shadow-sm:0 1px 3px rgba(20,20,26,.07),0 1px 2px rgba(20,20,26,.05);
  --shadow-md:0 4px 14px rgba(20,20,26,.09);
  --shadow-lg:0 14px 36px rgba(20,20,26,.13);
  --shadow-gold:0 8px 24px rgba(200,150,46,.25);
  --shadow-dark:0 18px 48px rgba(0,0,0,.45);
  /* 字体 */
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --mono:"JetBrains Mono","SF Mono","Consolas",monospace;
  /* 圆角 */
  --radius-xs:4px;
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:18px;
  --radius-xl:26px;
  --radius-pill:999px;
  /* 容器 */
  --container:1200px;
  --container-narrow:920px;
}

/* ---------- 重置 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  color:var(--text);
  background:var(--paper);
  line-height:1.65;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{list-style:none}
h1,h2,h3,h4,h5{font-family:var(--serif);font-weight:700;line-height:1.3;color:var(--ink)}
::selection{background:var(--gold-soft);color:var(--ink)}

/* ---------- 布局 ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.container-narrow{max-width:var(--container-narrow)}
.section{padding:72px 0}
.section-sm{padding:48px 0}
.section-ink{background:var(--ink);color:var(--text-on-dark)}
.section-ink h1,.section-ink h2,.section-ink h3{color:var(--text-on-dark)}
.section-paper{background:var(--paper)}
.section-card{background:var(--card)}
.grid{display:grid;gap:24px}
.flex{display:flex;gap:16px}
.center{display:flex;align-items:center;justify-content:center}
.between{display:flex;align-items:center;justify-content:space-between}
.wrap{flex-wrap:wrap}

/* ---------- 排版工具 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--gold-dark);font-weight:600;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--gold)}
.eyebrow.center-eye::before{display:none}
.eyebrow.on-dark{color:var(--gold-light)}
.eyebrow.on-dark::before{background:var(--gold-light)}
.lead{font-size:17px;color:var(--text-secondary);line-height:1.7}
.muted{color:var(--text-muted)}
.gold{color:var(--gold-dark)}
.serif{font-family:var(--serif)}
.mono{font-family:var(--mono)}
.h1{font-size:clamp(30px,5vw,52px);line-height:1.15}
.h2{font-size:clamp(26px,4vw,40px);line-height:1.2}
.h3{font-size:clamp(20px,3vw,28px)}
.text-center{text-align:center}
.mt-0{margin-top:0}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:32px}.mt-5{margin-top:48px}
.mb-0{margin-bottom:0}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}.mb-4{margin-bottom:32px}
.hidden{display:none!important}

/* 摄影元素:光圈装饰 */
.aperture{
  position:relative;width:64px;height:64px;border-radius:50%;
  background:radial-gradient(circle,var(--ink) 30%,transparent 31%),
    conic-gradient(from 0deg,var(--gold),var(--gold-light),var(--gold-dark),var(--gold));
  -webkit-mask:radial-gradient(circle,transparent 40%,#000 41%);
          mask:radial-gradient(circle,transparent 40%,#000 41%);
  animation:spin 18s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.divider-gold{width:48px;height:2px;background:var(--grad-gold);border-radius:2px}

/* ---------- 顶栏 ---------- */
.topbar{
  background:var(--ink);color:var(--text-on-dark-muted);
  font-size:12px;border-bottom:1px solid var(--ink-3);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px}
.topbar-left{display:flex;align-items:center;gap:18px}
.topbar-left .dot{width:6px;height:6px;border-radius:50%;background:var(--gold);box-shadow:0 0 8px var(--gold)}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar a:hover{color:var(--gold-light)}
.topbar .topbar-link{display:inline-flex;align-items:center;gap:5px}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:90;
  background:rgba(246,242,234,.92);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:10px;background:var(--ink);
  display:flex;align-items:center;justify-content:center;position:relative;
  box-shadow:var(--shadow-sm);
}
.brand-mark::before{
  content:"";position:absolute;inset:6px;border-radius:50%;
  border:2px solid var(--gold);
  background:radial-gradient(circle at 50% 50%,var(--gold-dark) 0 22%,var(--ink) 23%);
}
.brand-mark::after{
  content:"";position:absolute;width:6px;height:6px;border-radius:50%;
  background:var(--text-on-dark);left:50%;top:50%;transform:translate(-50%,-50%);
  box-shadow:0 0 6px rgba(246,242,234,.6);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-family:var(--serif);font-size:18px;color:var(--ink);letter-spacing:.04em}
.brand-text small{font-size:11px;color:var(--text-muted);letter-spacing:.12em;font-family:var(--mono)}
.nav-menu{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}
.nav-menu a{
  padding:9px 16px;border-radius:var(--pill);font-size:14.5px;font-weight:500;
  color:var(--text-body);position:relative;transition:all .2s;
}
.nav-menu a:hover{color:var(--ink);background:var(--paper-2)}
.nav-menu a.active{color:var(--ink);background:var(--ink);color:var(--text-on-dark)}
.nav-menu a.active{background:var(--ink);color:var(--gold-light)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-cart{
  position:relative;display:flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:var(--pill);background:var(--ink);color:var(--text-on-dark);
  font-size:13px;font-weight:600;transition:all .2s;
}
.nav-cart:hover{background:var(--ink-3)}
.nav-cart .badge{
  position:absolute;top:-4px;right:-4px;min-width:18px;height:18px;padding:0 5px;
  background:var(--gold);color:var(--ink);border-radius:var(--pill);
  font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);
}
.nav-user{
  width:38px;height:38px;border-radius:50%;background:var(--paper-2);
  display:flex;align-items:center;justify-content:center;color:var(--ink);
  border:1px solid var(--line);font-weight:600;font-size:13px;
}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;background:var(--paper-2);color:var(--ink);align-items:center;justify-content:center}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--pill);font-size:14.5px;font-weight:600;
  transition:all .22s cubic-bezier(.4,0,.2,1);white-space:nowrap;border:1px solid transparent;
  font-family:var(--sans);
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--grad-gold);color:var(--ink);box-shadow:var(--shadow-gold)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(200,150,46,.35)}
.btn-ink{background:var(--ink);color:var(--text-on-dark)}
.btn-ink:hover{background:var(--ink-3);transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:var(--text-on-dark)}
.btn-outline-gold{background:transparent;color:var(--gold-dark);border-color:var(--gold)}
.btn-outline-gold:hover{background:var(--gold);color:var(--ink)}
.btn-ghost{background:var(--paper-2);color:var(--ink)}
.btn-ghost:hover{background:var(--paper-3)}
.btn-light{background:var(--card);color:var(--ink);box-shadow:var(--shadow-sm)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-lg{padding:15px 34px;font-size:16px}
.btn-sm{padding:8px 16px;font-size:13px}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}

/* ---------- HERO ---------- */
.hero{
  position:relative;background:var(--grad-hero);color:var(--text-on-dark);
  overflow:hidden;padding:80px 0 88px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(40% 50% at 85% 20%,rgba(200,150,46,.22),transparent 60%),
    radial-gradient(30% 40% at 10% 80%,rgba(142,42,42,.12),transparent 60%);
  pointer-events:none;
}
/* 取景框刻度 */
.hero::after{
  content:"";position:absolute;left:24px;top:24px;right:24px;bottom:24px;
  border:1px solid rgba(217,168,74,.25);border-radius:8px;pointer-events:none;
  -webkit-mask:linear-gradient(#000 0 0) padding-box,linear-gradient(#000 0 0);
          mask:linear-gradient(#000 0 0) padding-box,linear-gradient(#000 0 0);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-eyebrow{color:var(--gold-light)}
.hero h1{color:var(--text-on-dark);font-size:clamp(34px,5.2vw,58px);line-height:1.12;letter-spacing:-.01em}
.hero h1 .hl{
  background:var(--grad-gold);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-style:italic;
}
.hero-lead{color:var(--text-on-dark-muted);font-size:17px;max-width:520px;margin-top:20px}
.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-meta{display:flex;gap:32px;margin-top:40px;flex-wrap:wrap}
.hero-meta .item{display:flex;flex-direction:column}
.hero-meta .num{font-family:var(--mono);font-size:28px;color:var(--gold-light);font-weight:700}
.hero-meta .lbl{font-size:12px;color:var(--text-on-dark-muted);letter-spacing:.1em;text-transform:uppercase}

/* HERO 右侧取景器卡片 */
.viewfinder{
  position:relative;background:var(--ink-2);border:1px solid var(--ink-3);
  border-radius:var(--radius-lg);padding:18px;box-shadow:var(--shadow-dark);
}
.vf-screen{
  position:relative;aspect-ratio:4/3;border-radius:var(--radius-md);overflow:hidden;
  background:#000;
}
.vf-screen img{width:100%;height:100%;object-fit:cover;opacity:.92}
.vf-overlay{position:absolute;inset:0;pointer-events:none}
/* 对焦框 */
.vf-focus{position:absolute;left:30%;top:25%;width:40%;height:50%;border:1.5px solid rgba(217,168,74,.85);border-radius:3px}
.vf-focus::before,.vf-focus::after{content:"";position:absolute;width:14px;height:14px;border:2px solid var(--gold-light)}
.vf-focus::before{left:-2px;top:-2px;border-right:none;border-bottom:none}
.vf-focus::after{right:-2px;bottom:-2px;border-left:none;border-top:none}
/* 取景框四角 */
.vf-corner{position:absolute;width:22px;height:22px;border:2px solid var(--gold-light)}
.vf-corner.tl{left:10px;top:10px;border-right:none;border-bottom:none}
.vf-corner.tr{right:10px;top:10px;border-left:none;border-bottom:none}
.vf-corner.bl{left:10px;bottom:10px;border-right:none;border-top:none}
.vf-corner.br{right:10px;bottom:10px;border-left:none;border-top:none}
.vf-grid{position:absolute;inset:0;background:linear-gradient(rgba(217,168,74,.18) 1px,transparent 1px) 0 0/100% 33.33%,linear-gradient(90deg,rgba(217,168,74,.18) 1px,transparent 1px) 0 0/33.33% 100%}
.vf-info{display:flex;justify-content:space-between;align-items:center;margin-top:14px;padding:0 4px}
.vf-info .left{display:flex;gap:14px;align-items:center;font-family:var(--mono);font-size:11px;color:var(--gold-light);letter-spacing:.08em}
.vf-info .rec{display:flex;align-items:center;gap:5px;color:var(--crimson)}
.vf-info .rec::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--crimson);animation:rec 1.4s ease-in-out infinite}
@keyframes rec{50%{opacity:.25}}
.vf-info .right{font-family:var(--mono);font-size:11px;color:var(--text-on-dark-muted);letter-spacing:.06em}

/* ---------- 通用卡片 ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:all .25s}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.card-pad{padding:24px}

/* 章节标题 */
.sec-head{max-width:680px;margin-bottom:40px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head .eyebrow{margin-bottom:14px}
.sec-head h2{margin-bottom:12px}
.sec-head p{color:var(--text-secondary)}

/* ---------- 双业务入口卡 ---------- */
.dual-entry{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.entry-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  min-height:300px;display:flex;flex-direction:column;justify-content:flex-end;
  padding:32px;color:var(--text-on-dark);border:1px solid var(--border-dark);
  transition:all .3s;
}
.entry-card .bg{position:absolute;inset:0;z-index:0}
.entry-card .bg img{width:100%;height:100%;object-fit:cover}
.entry-card .bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,20,26,.1) 0%,rgba(20,20,26,.85) 100%)}
.entry-card .content{position:relative;z-index:1}
.entry-card .tag{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--gold-light);margin-bottom:12px;text-transform:uppercase}
.entry-card h3{color:#fff;font-size:26px;margin-bottom:8px}
.entry-card p{color:var(--text-on-dark-muted);font-size:14px;margin-bottom:18px}
.entry-card .enter{display:inline-flex;align-items:center;gap:8px;color:var(--gold-light);font-weight:600;font-size:14px}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-dark)}
.entry-card:hover .enter{gap:12px}

/* ---------- 信息卡片 ---------- */
.info-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;transition:all .25s;display:flex;flex-direction:column;
}
.info-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:var(--gold-light)}
.info-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--paper-2);position:relative}
.info-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.info-card:hover .thumb img{transform:scale(1.06)}
.info-card .thumb .cat-badge{
  position:absolute;left:12px;top:12px;padding:4px 12px;border-radius:var(--pill);
  background:rgba(20,20,26,.78);color:var(--gold-light);font-size:11px;font-weight:600;
  backdrop-filter:blur(8px);letter-spacing:.04em;
}
.info-card .body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.info-card .title{font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink);line-height:1.4;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.info-card .summary{font-size:13.5px;color:var(--text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px;flex:1}
.info-card .meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-muted);border-top:1px solid var(--line-soft);padding-top:12px}
.info-card .meta .co{display:flex;align-items:center;gap:6px;font-weight:500;color:var(--text-body)}
.info-card .meta .co .avatar{width:20px;height:20px;border-radius:50%;background:var(--grad-gold);color:var(--ink);display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700}
.info-card .meta .price{color:var(--gold-dark);font-weight:700;font-family:var(--mono)}

/* 信息列表(横向) */
.info-row{
  display:flex;gap:20px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-md);overflow:hidden;transition:all .25s;
}
.info-row:hover{box-shadow:var(--shadow-md);border-color:var(--gold-light)}
.info-row .thumb{width:220px;flex-shrink:0;aspect-ratio:16/10;overflow:hidden;background:var(--paper-2);position:relative}
.info-row .thumb img{width:100%;height:100%;object-fit:cover}
.info-row .body{flex:1;padding:18px 20px;display:flex;flex-direction:column}
.info-row .title{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--ink);margin-bottom:8px}
.info-row .summary{font-size:13.5px;color:var(--text-secondary);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px;flex:1}
.info-row .meta{display:flex;align-items:center;gap:16px;font-size:12px;color:var(--text-muted);flex-wrap:wrap}
.info-row .meta .price{color:var(--gold-dark);font-weight:700;font-family:var(--mono);margin-left:auto}

/* ---------- 商品卡片 ---------- */
.pd-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;transition:all .25s;display:flex;flex-direction:column;position:relative;
}
.pd-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:var(--gold-light)}
.pd-card .img-wrap{aspect-ratio:1/1;overflow:hidden;background:var(--paper-2);position:relative}
.pd-card .img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.pd-card:hover .img-wrap img{transform:scale(1.07)}
.pd-card .brand-tag{position:absolute;left:10px;top:10px;font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--ink);background:var(--gold-soft);padding:3px 8px;border-radius:4px;font-weight:600}
.pd-card .body{padding:14px 14px 16px;display:flex;flex-direction:column;flex:1}
.pd-card .name{font-size:14px;font-weight:600;color:var(--ink);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px;min-height:40px}
.pd-card .spec{font-size:12px;color:var(--text-muted);margin-bottom:10px}
.pd-card .price-row{display:flex;align-items:baseline;gap:8px;margin-top:auto}
.pd-card .price{font-family:var(--mono);font-size:18px;font-weight:700;color:var(--gold-dark)}
.pd-card .price small{font-size:12px;font-weight:600}
.pd-card .market{font-size:12px;color:var(--text-muted);text-decoration:line-through}
.pd-card .add-btn{
  position:absolute;right:12px;bottom:12px;width:34px;height:34px;border-radius:50%;
  background:var(--ink);color:var(--gold-light);display:flex;align-items:center;justify-content:center;
  transition:all .2s;
}
.pd-card:hover .add-btn{background:var(--grad-gold);color:var(--ink)}

/* ---------- 表单 ---------- */
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:7px}
.field label .req{color:var(--danger)}
.input,.textarea,.select{
  width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--card);color:var(--text);font-size:14px;transition:all .2s;
}
.input:focus,.textarea:focus,.select:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px var(--gold-soft)}
.textarea{min-height:120px;resize:vertical;line-height:1.6}
.select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236B6B75' d='M6 8L0 0h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}
.field-hint{font-size:12px;color:var(--text-muted);margin-top:5px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* 搜索框 */
.search-box{position:relative;flex:1;max-width:420px}
.search-box input{width:100%;padding:10px 16px 10px 42px;border-radius:var(--pill);border:1px solid var(--line);background:var(--card);font-size:13.5px}
.search-box input:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px var(--gold-soft)}
.search-box .icon{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--text-muted);width:16px;height:16px}

/* ---------- 标签/筛选 ---------- */
.chips{display:flex;gap:10px;flex-wrap:wrap}
.chip{
  padding:8px 18px;border-radius:var(--pill);background:var(--card);border:1px solid var(--line);
  font-size:13.5px;font-weight:500;color:var(--text-body);cursor:pointer;transition:all .2s;white-space:nowrap;
}
.chip:hover{border-color:var(--gold);color:var(--ink)}
.chip.active{background:var(--ink);color:var(--gold-light);border-color:var(--ink)}

/* 面包屑 */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);flex-wrap:wrap}
.crumb a:hover{color:var(--gold-dark)}
.crumb .sep{color:var(--line-2)}

/* ---------- 弹窗 ---------- */
.modal-mask{
  position:fixed;inset:0;background:rgba(20,20,26,.6);backdrop-filter:blur(6px);
  z-index:200;display:none;align-items:center;justify-content:center;padding:20px;
  animation:fadeIn .2s;
}
.modal-mask.open{display:flex}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{
  background:var(--card);border-radius:var(--radius-lg);width:100%;max-width:440px;
  box-shadow:var(--shadow-lg);animation:popIn .25s cubic-bezier(.34,1.56,.64,1);overflow:hidden;
  max-height:90vh;display:flex;flex-direction:column;
}
@keyframes popIn{from{opacity:0;transform:scale(.94) translateY(10px)}to{opacity:1;transform:scale(1)}}
.modal-head{padding:22px 26px 0;display:flex;align-items:center;justify-content:space-between}
.modal-head h3{font-size:20px}
.modal-close{width:34px;height:34px;border-radius:50%;background:var(--paper-2);color:var(--ink);display:flex;align-items:center;justify-content:center;font-size:18px;transition:all .2s}
.modal-close:hover{background:var(--paper-3);transform:rotate(90deg)}
.modal-body{padding:22px 26px;overflow-y:auto}
.modal-foot{padding:0 26px 24px;display:flex;gap:12px}

/* 登录注册弹窗 */
.auth-modal{max-width:430px}
.auth-tabs{display:flex;gap:0;margin:6px 0 22px;border-bottom:1px solid var(--line)}
.auth-tabs button{flex:1;padding:12px;font-size:15px;font-weight:600;color:var(--text-muted);position:relative;transition:color .2s}
.auth-tabs button.active{color:var(--ink)}
.auth-tabs button.active::after{content:"";position:absolute;left:20%;right:20%;bottom:-1px;height:2px;background:var(--grad-gold);border-radius:2px}
.auth-foot{font-size:13px;color:var(--text-muted);text-align:center;margin-top:16px}
.auth-foot a{color:var(--gold-dark);font-weight:600}
.captcha-row{display:grid;grid-template-columns:1fr 110px;gap:12px}
.captcha-box{height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:18px;font-weight:700;letter-spacing:.25em;cursor:pointer;background:var(--paper-2);user-select:none;font-style:italic;color:var(--ink)}
.agree-row{font-size:13px;color:var(--text-secondary);display:flex;gap:8px;align-items:flex-start}
.agree-row input{margin-top:3px;accent-color:var(--gold)}

/* 支付弹窗 */
.pay-modal{max-width:380px;text-align:center}
.pay-qr{width:200px;height:200px;margin:8px auto 16px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--paper-2);display:flex;align-items:center;justify-content:center;overflow:hidden}
.pay-qr img{width:100%;height:100%;object-fit:cover}
.pay-amount{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--ink);margin:6px 0}
.pay-amount small{font-size:14px;color:var(--text-muted)}
.pay-tip{font-size:13px;color:var(--text-muted);margin-bottom:6px}

/* ---------- Toast ---------- */
.toast-wrap{position:fixed;top:20px;left:50%;transform:translateX(-50%);z-index:300;display:flex;flex-direction:column;gap:10px;pointer-events:none}
.toast{
  background:var(--ink);color:var(--text-on-dark);padding:12px 22px;border-radius:var(--pill);
  font-size:14px;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:10px;
  animation:toastIn .3s;max-width:90vw;
}
.toast.success{background:var(--success)}
.toast.error{background:var(--danger)}
.toast.warn{background:var(--warn)}
@keyframes toastIn{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}

/* ---------- 套餐卡 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.plan-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 26px;position:relative;transition:all .25s;
}
.plan-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.plan-card.featured{border-color:var(--gold);box-shadow:var(--shadow-gold)}
.plan-card.featured::before{content:"推荐";position:absolute;top:-11px;left:26px;background:var(--grad-gold);color:var(--ink);font-size:11px;font-weight:700;padding:3px 14px;border-radius:var(--pill);letter-spacing:.06em}
.plan-card .pname{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--gold-dark);text-transform:uppercase;margin-bottom:10px}
.plan-card .pprice{font-family:var(--mono);font-size:38px;font-weight:700;color:var(--ink);line-height:1}
.plan-card .pprice small{font-size:14px;color:var(--text-muted);font-weight:500}
.plan-card .pdesc{font-size:13px;color:var(--text-secondary);margin:8px 0 18px}
.plan-card .pfeats li{font-size:13.5px;color:var(--text-body);padding:7px 0 7px 22px;position:relative;border-top:1px solid var(--line-soft)}
.plan-card .pfeats li::before{content:"";position:absolute;left:0;top:14px;width:12px;height:12px;border-radius:50%;background:var(--gold-soft);border:2px solid var(--gold)}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:var(--text-on-dark-muted);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid var(--ink-3)}
.footer .f-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer .f-brand strong{font-family:var(--serif);font-size:18px;color:var(--text-on-dark)}
.footer p{font-size:13px;line-height:1.8}
.footer h4{color:var(--text-on-dark);font-size:14px;margin-bottom:16px;font-family:var(--sans);font-weight:600;letter-spacing:.04em}
.footer ul li{margin-bottom:10px}
.footer ul li a{font-size:13px;transition:color .2s}
.footer ul li a:hover{color:var(--gold-light)}
.footer-contact li{display:flex;gap:10px;font-size:13px;margin-bottom:12px;align-items:flex-start}
.footer-contact .lbl{color:var(--text-on-dark-muted);min-width:42px}
.footer-contact .val{color:var(--text-on-dark)}
.footer-bottom{padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px}
.footer-bottom .links{display:flex;gap:14px;flex-wrap:wrap}
.footer-bottom a:hover{color:var(--gold-light)}
.footer-beian{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.footer-beian a{display:inline-flex;align-items:center;gap:5px}
.beian-shield{width:14px;height:14px;fill:var(--text-on-dark-muted)}
.footer-admin-entry{color:var(--text-on-dark-muted);font-size:12px}
.footer-admin-entry:hover{color:var(--gold-light)}

/* ---------- 信息详情 ---------- */
.article{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:40px 48px}
.article .a-cat{display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--gold-dark);background:var(--gold-soft);padding:4px 12px;border-radius:var(--pill);margin-bottom:16px}
.article h1{font-size:clamp(24px,3.5vw,34px);line-height:1.3;margin-bottom:16px}
.article .a-meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--text-muted);padding-bottom:20px;border-bottom:1px solid var(--line-soft);margin-bottom:24px;flex-wrap:wrap}
.article .a-meta .co{display:flex;align-items:center;gap:8px;color:var(--text-body);font-weight:500}
.article .a-meta .co .avatar{width:28px;height:28px;border-radius:50%;background:var(--grad-gold);color:var(--ink);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.article .a-cover{border-radius:var(--radius-md);overflow:hidden;margin-bottom:24px;aspect-ratio:21/9}
.article .a-cover img{width:100%;height:100%;object-fit:cover}
.article .a-body{font-size:15.5px;line-height:1.85;color:var(--text-body)}
.article .a-body p{margin-bottom:16px}
.article .a-body h3{font-size:20px;margin:24px 0 12px;color:var(--ink)}
.article .a-body img{border-radius:var(--radius-sm);margin:16px 0}
.article .a-sidebar{display:flex;gap:12px;flex-wrap:wrap;padding:18px;background:var(--paper);border-radius:var(--radius-md);margin-top:24px;border:1px solid var(--line-soft)}
.article .a-sidebar .item{font-size:13px;color:var(--text-secondary)}
.article .a-sidebar .item strong{color:var(--ink);display:block;font-size:12px;margin-bottom:3px}

/* 信息详情侧栏(业务知识) */
.insight-box{background:var(--ink);color:var(--text-on-dark);border-radius:var(--radius-md);padding:22px;margin-top:20px}
.insight-box h4{color:var(--gold-light);font-size:14px;margin-bottom:14px;font-family:var(--sans);letter-spacing:.04em}
.insight-box .row{display:flex;gap:12px;padding:10px 0;border-top:1px solid var(--ink-3);font-size:13px}
.insight-box .row:first-of-type{border-top:none}
.insight-box .row .k{color:var(--text-on-dark-muted);min-width:74px}
.insight-box .row .v{color:var(--text-on-dark)}

/* ---------- 商品详情 ---------- */
.pd-detail{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.pd-gallery .main-img{aspect-ratio:1/1;border-radius:var(--radius-lg);overflow:hidden;background:var(--paper-2);border:1px solid var(--line)}
.pd-gallery .main-img img{width:100%;height:100%;object-fit:cover}
.pd-gallery .thumbs{display:flex;gap:10px;margin-top:12px}
.pd-gallery .thumbs .t{width:72px;height:72px;border-radius:var(--radius-sm);overflow:hidden;border:2px solid var(--line);cursor:pointer}
.pd-gallery .thumbs .t.active{border-color:var(--gold)}
.pd-gallery .thumbs .t img{width:100%;height:100%;object-fit:cover}
.pd-info .brand{font-family:var(--mono);font-size:12px;color:var(--gold-dark);letter-spacing:.1em;margin-bottom:8px}
.pd-info h1{font-size:26px;line-height:1.35;margin-bottom:12px}
.pd-info .subtitle{font-size:14px;color:var(--text-secondary);margin-bottom:18px}
.pd-price-box{background:var(--paper);border-radius:var(--radius-md);padding:20px;margin-bottom:20px;border:1px solid var(--line-soft)}
.pd-price-box .now{font-family:var(--mono);font-size:34px;font-weight:700;color:var(--gold-dark)}
.pd-price-box .now small{font-size:15px}
.pd-price-box .market{font-size:14px;color:var(--text-muted);text-decoration:line-through;margin-left:10px}
.pd-price-box .tag{display:inline-block;background:var(--crimson);color:#fff;font-size:11px;padding:2px 8px;border-radius:4px;margin-left:8px;vertical-align:middle}
.pd-specs{margin-bottom:20px}
.pd-specs .row{display:flex;padding:10px 0;border-bottom:1px solid var(--line-soft);font-size:13.5px}
.pd-specs .row .k{width:100px;color:var(--text-muted);flex-shrink:0}
.pd-specs .row .v{color:var(--text-body)}
.qty-row{display:flex;align-items:center;gap:16px;margin:20px 0}
.qty{display:flex;align-items:center;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.qty button{width:38px;height:38px;background:var(--paper-2);color:var(--ink);font-size:18px}
.qty button:hover{background:var(--paper-3)}
.qty input{width:54px;height:38px;text-align:center;border:none;border-left:1px solid var(--line);border-right:1px solid var(--line);font-family:var(--mono)}
.pd-actions{display:flex;gap:12px;margin-top:8px}
.pd-desc{margin-top:48px}
.pd-desc h2{font-size:22px;margin-bottom:18px;padding-bottom:12px;border-bottom:2px solid var(--ink);display:inline-block}

/* ---------- 购物车 ---------- */
.cart-table{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden}
.cart-row{display:grid;grid-template-columns:40px 90px 1fr 120px 120px 40px;gap:16px;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line-soft)}
.cart-row.head{background:var(--paper);font-size:12px;color:var(--text-muted);font-weight:600;letter-spacing:.06em;text-transform:uppercase}
.cart-row:last-child{border-bottom:none}
.cart-row .ck{width:18px;height:18px;accent-color:var(--gold)}
.cart-row .img{width:90px;height:90px;border-radius:var(--radius-sm);overflow:hidden;background:var(--paper-2)}
.cart-row .img img{width:100%;height:100%;object-fit:cover}
.cart-row .name{font-size:14px;font-weight:600;color:var(--ink)}
.cart-row .spec{font-size:12px;color:var(--text-muted);margin-top:4px}
.cart-row .price{font-family:var(--mono);font-weight:700;color:var(--gold-dark)}
.cart-row .del{color:var(--text-muted);font-size:18px;width:32px;height:32px;border-radius:50%}
.cart-row .del:hover{color:var(--danger);background:var(--paper-2)}
.cart-bar{position:sticky;bottom:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);padding:16px 24px;display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow-md);margin-top:20px}

/* ---------- 订单/个人中心 ---------- */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:24px;overflow-x:auto}
.tabs button{padding:14px 20px;font-size:14px;font-weight:600;color:var(--text-muted);white-space:nowrap;position:relative;transition:color .2s}
.tabs button.active{color:var(--ink)}
.tabs button.active::after{content:"";position:absolute;left:16px;right:16px;bottom:-1px;height:2px;background:var(--grad-gold);border-radius:2px}
.order-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;margin-bottom:16px}
.order-card .o-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:var(--paper);font-size:13px;border-bottom:1px solid var(--line-soft)}
.order-card .o-head .no{font-family:var(--mono);color:var(--text-body)}
.order-card .o-head .st{font-weight:600}
.order-card .o-head .st.paid{color:var(--gold-dark)}
.order-card .o-head .st.done{color:var(--success)}
.order-card .o-head .st.unpaid{color:var(--danger)}
.order-card .o-body{padding:16px 20px;display:flex;gap:14px;align-items:center}
.order-card .o-body .img{width:64px;height:64px;border-radius:var(--radius-sm);overflow:hidden;background:var(--paper-2);flex-shrink:0}
.order-card .o-body .img img{width:100%;height:100%;object-fit:cover}
.order-card .o-body .info{flex:1}
.order-card .o-body .info .name{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:4px}
.order-card .o-body .info .qty{font-size:12px;color:var(--text-muted)}
.order-card .o-foot{padding:14px 20px;border-top:1px solid var(--line-soft);display:flex;justify-content:space-between;align-items:center}
.order-card .o-foot .total{font-family:var(--mono);font-size:17px;font-weight:700;color:var(--gold-dark)}

.user-hero{background:var(--grad-hero);color:var(--text-on-dark);padding:40px 0}
.user-hero .u-box{display:flex;align-items:center;gap:20px}
.user-hero .avatar{width:72px;height:72px;border-radius:50%;background:var(--grad-gold);color:var(--ink);display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:700;font-family:var(--serif);border:3px solid var(--gold-light)}
.user-hero .uname{font-size:22px;font-family:var(--serif)}
.user-hero .ulevel{font-size:13px;color:var(--gold-light);margin-top:4px}
.user-grid{display:grid;grid-template-columns:240px 1fr;gap:24px;margin-top:-30px;position:relative}
.user-side{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);padding:14px;height:fit-content}
.user-side a{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:var(--radius-sm);font-size:14px;color:var(--text-body);transition:all .2s}
.user-side a:hover{background:var(--paper-2)}
.user-side a.active{background:var(--ink);color:var(--gold-light)}
.user-side a svg{width:17px;height:17px}

/* ---------- 后台 ---------- */
.admin-layout{display:grid;grid-template-columns:230px 1fr;min-height:100vh}
.admin-side{background:var(--ink);color:var(--text-on-dark-muted);padding:24px 16px;position:sticky;top:0;height:100vh;overflow-y:auto}
.admin-side .a-brand{display:flex;align-items:center;gap:10px;padding:0 10px 22px;border-bottom:1px solid var(--ink-3);margin-bottom:16px}
.admin-side .a-brand strong{color:var(--text-on-dark);font-family:var(--serif);font-size:16px}
.admin-side .a-brand small{display:block;font-size:10px;color:var(--gold-light);letter-spacing:.1em;font-family:var(--mono)}
.admin-side a{display:flex;align-items:center;gap:11px;padding:11px 14px;border-radius:var(--radius-sm);font-size:14px;transition:all .2s;margin-bottom:2px}
.admin-side a:hover{background:var(--ink-3);color:var(--text-on-dark)}
.admin-side a.active{background:var(--grad-gold);color:var(--ink);font-weight:600}
.admin-side a svg{width:17px;height:17px}
.admin-main{padding:28px 32px;background:var(--paper)}
.admin-topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.admin-topbar h1{font-size:22px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:24px}
.stat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);padding:20px}
.stat-card .lbl{font-size:12px;color:var(--text-muted);letter-spacing:.06em;text-transform:uppercase}
.stat-card .num{font-family:var(--mono);font-size:28px;font-weight:700;color:var(--ink);margin-top:6px}
.stat-card .delta{font-size:12px;color:var(--success);margin-top:4px}
.admin-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden}
.admin-card .c-head{padding:18px 22px;border-bottom:1px solid var(--line-soft);display:flex;align-items:center;justify-content:space-between}
.admin-card .c-head h3{font-size:16px}
.admin-card .c-body{padding:8px 0}
.admin-table{width:100%}
.admin-table th{text-align:left;font-size:12px;color:var(--text-muted);font-weight:600;letter-spacing:.05em;text-transform:uppercase;padding:12px 22px;border-bottom:1px solid var(--line-soft)}
.admin-table td{padding:13px 22px;font-size:13.5px;border-bottom:1px solid var(--line-soft)}
.admin-table tr:last-child td{border-bottom:none}
.admin-table tr:hover{background:var(--paper)}
.pill{display:inline-block;padding:3px 10px;border-radius:var(--pill);font-size:11px;font-weight:600}
.pill.gold{background:var(--gold-soft);color:var(--gold-dark)}
.pill.green{background:#DDF1E6;color:var(--success)}
.pill.red{background:#F7DDDD;color:var(--danger)}
.pill.gray{background:var(--paper-2);color:var(--text-secondary)}
.pill.ink{background:var(--ink);color:var(--gold-light)}

/* ---------- 空状态 ---------- */
.empty{text-align:center;padding:60px 20px;color:var(--text-muted)}
.empty .icon{width:64px;height:64px;margin:0 auto 16px;opacity:.4}
.empty p{font-size:14px}

/* ---------- 通用工具 ---------- */
.skeleton{background:linear-gradient(90deg,var(--paper-2) 25%,var(--paper-3) 37%,var(--paper-2) 63%);background-size:400% 100%;animation:sk 1.4s ease infinite}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}
.fade-up{animation:fadeUp .6s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
.stagger> *{animation:fadeUp .5s ease both}
.stagger> *:nth-child(1){animation-delay:.05s}.stagger> *:nth-child(2){animation-delay:.1s}.stagger> *:nth-child(3){animation-delay:.15s}.stagger> *:nth-child(4){animation-delay:.2s}.stagger> *:nth-child(5){animation-delay:.25s}.stagger> *:nth-child(6){animation-delay:.3s}.stagger> *:nth-child(7){animation-delay:.35s}.stagger> *:nth-child(8){animation-delay:.4s}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .dual-entry{grid-template-columns:1fr}
  .pd-detail{grid-template-columns:1fr;gap:28px}
  .plan-grid{grid-template-columns:1fr;max-width:420px;margin:0 auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .user-grid{grid-template-columns:1fr}
  .user-side{display:flex;overflow-x:auto;padding:10px}
  .user-side a{white-space:nowrap}
  .stat-grid{grid-template-columns:1fr 1fr}
  .admin-layout{grid-template-columns:1fr}
  .admin-side{position:static;height:auto;display:flex;overflow-x:auto;padding:14px}
  .admin-side .a-brand{border:none;padding:0 14px 0 0;margin:0;white-space:nowrap}
  .admin-side a{white-space:nowrap}
}
@media (max-width:760px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .nav-menu{display:none;position:absolute;top:68px;left:0;right:0;background:var(--card);flex-direction:column;padding:12px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-md)}
  .nav-menu.open{display:flex}
  .nav-menu a{width:100%;justify-content:center}
  .nav-toggle{display:flex}
  .nav-actions .nav-user{display:none}
  .hero{padding:56px 0 64px}
  .hero::after{left:14px;top:14px;right:14px;bottom:14px}
  .article{padding:24px 20px}
  .cart-row{grid-template-columns:24px 70px 1fr auto;gap:12px}
  .cart-row .col-price,.cart-row .col-qty,.cart-row .col-del{display:none}
  .cart-row.head{display:none}
  .info-row{flex-direction:column}
  .info-row .thumb{width:100%;aspect-ratio:16/9}
  .field-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}