/* ============================================================
   晶玻 GLASSWORKS — 玻璃瓶企业官网
   设计基调：纯白 + 深灰 + 琥珀金 | 洁净 · 工业美学 · 秩序感
   ============================================================ */

:root{
  --white:#ffffff;
  --off:#f6f7f9;
  --ink:#23262d;          /* 深灰 主文字 */
  --ink-soft:#5c636e;     /* 次级文字 */
  --line:#e6e8ec;         /* 分隔线 */
  --amber:#c8912f;        /* 品牌色 琥珀金 */
  --amber-deep:#a8741c;
  --amber-soft:#f3e6cb;
  --radius:14px;
  --radius-sm:9px;
  --shadow:0 10px 30px rgba(35,38,45,.08);
  --shadow-lg:0 20px 50px rgba(35,38,45,.14);
  --maxw:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{
  font-family:"Inter","PingFang SC","Microsoft YaHei",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
em{font-style:normal}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.4em;
  padding:13px 26px;border-radius:999px;font-weight:600;font-size:15px;
  border:1.5px solid transparent;cursor:pointer;transition:.25s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--amber);color:#fff;box-shadow:0 8px 20px rgba(200,145,47,.3)}
.btn--primary:hover{background:var(--amber-deep);transform:translateY(-2px)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--ink);background:var(--off)}
.btn--sm{padding:9px 18px;font-size:14px}
/* 1688 店铺入口（1688 品牌橙） */
.btn--ali{background:#ff6a00;color:#fff;box-shadow:0 8px 20px rgba(255,106,0,.28)}
.btn--ali:hover{background:#e85d00;transform:translateY(-2px);color:#fff}
.btn--block{width:100%}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid transparent;transition:.3s}
.nav.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 20px rgba(35,38,45,.05)}
.nav__inner{max-width:var(--maxw);margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700}
.brand__mark{color:var(--amber)}
.brand__text{display:flex;flex-direction:column;line-height:1;font-size:19px;letter-spacing:.5px}
.brand__text em{font-size:10px;letter-spacing:3px;color:var(--ink-soft);font-weight:600;margin-top:3px}
.nav__links{display:flex;gap:28px;margin-left:auto;font-size:15px;font-weight:500}
.nav__links a{position:relative;color:var(--ink-soft);padding:6px 0;transition:.2s}
.nav__links a:hover,.nav__links a.is-active{color:var(--ink)}
.nav__links a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--amber);border-radius:2px}
.nav__actions{display:flex;align-items:center;gap:14px}
.lang-toggle{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px;font-weight:600;font-size:13px;cursor:pointer;color:var(--ink);transition:.2s}
.lang-toggle:hover{border-color:var(--ink)}
.nav__burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav__burger span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;
  text-align:center;overflow:hidden;background:
    radial-gradient(120% 90% at 50% -10%, #fff 0%, #f6f7f9 55%, #eef1f4 100%);
  padding:120px 24px 80px}
.hero__glow{position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(40% 40% at 50% 78%, rgba(200,145,47,.22), transparent 70%),
    radial-gradient(30% 30% at 18% 30%, rgba(200,145,47,.12), transparent 70%),
    radial-gradient(30% 30% at 82% 26%, rgba(200,145,47,.10), transparent 70%);
  animation:flicker 6s ease-in-out infinite}
@keyframes flicker{0%,100%{opacity:.85}50%{opacity:1}}
.hero__content{position:relative;z-index:2;max-width:840px}
.hero__eyebrow{display:inline-block;font-size:13px;letter-spacing:2px;font-weight:600;color:var(--amber-deep);
  background:var(--amber-soft);padding:7px 16px;border-radius:999px;margin-bottom:22px;text-transform:uppercase}
.hero__title{font-size:clamp(34px,6vw,62px);font-weight:800;letter-spacing:-1px;line-height:1.1;color:var(--ink)}
.hero__sub{margin:22px auto 0;max-width:620px;font-size:clamp(15px,2vw,18px);color:var(--ink-soft)}
.hero__cta{display:flex;gap:14px;justify-content:center;margin-top:34px;flex-wrap:wrap}
.hero__video-note{margin-top:30px;font-size:12.5px;color:var(--ink-soft);opacity:.8}
.hero__scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);font-size:30px;color:var(--amber);
  animation:bob 2s ease-in-out infinite;z-index:2}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* ---------- 三大优势 ---------- */
.advantages{padding:80px 0;background:var(--white)}
.advantages__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.advantage{text-align:center;padding:36px 28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--off);transition:.3s}
.advantage:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--amber-soft)}
.advantage__icon{width:74px;height:74px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  margin:0 auto 18px;color:var(--amber);background:#fff;border:1px solid var(--amber-soft)}
.advantage h3{font-size:20px;margin-bottom:8px}
.advantage p{color:var(--ink-soft);font-size:15px}

/* ---------- 通用 section ---------- */
.section{padding:90px 0}
.section--alt{background:var(--off)}
.section__head{max-width:680px;margin:0 auto 48px;text-align:center}
.section__tag{display:inline-block;font-size:12.5px;letter-spacing:2px;font-weight:700;color:var(--amber-deep);text-transform:uppercase;margin-bottom:14px}
.section__title{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-.5px}
.section__lead{margin-top:14px;color:var(--ink-soft);font-size:16px}
.section__more{text-align:center;margin-top:40px}

/* ---------- 产品网格 ---------- */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  cursor:pointer;transition:.3s var(--ease);display:flex;flex-direction:column}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--amber-soft)}
.product-card__media{position:relative;aspect-ratio:1/1;background:
   radial-gradient(120% 120% at 50% 20%, #fbfcfd, #eef1f4);display:flex;align-items:center;justify-content:center;padding:18px;overflow:hidden}
.product-card__media svg{width:62%;height:auto;filter:drop-shadow(0 8px 16px rgba(35,38,45,.12))}
.product-card__badge{position:absolute;top:12px;left:12px;background:var(--amber);color:#fff;font-size:11px;font-weight:700;padding:4px 10px;border-radius:999px}
.product-card__body{padding:16px 16px 18px;border-top:1px solid var(--line);flex:1;display:flex;flex-direction:column}
.product-card__cat{font-size:12px;color:var(--amber-deep);font-weight:600;letter-spacing:.5px}
.product-card__name{font-size:16px;font-weight:700;margin:4px 0 10px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.9em}
.product-card__specs{display:flex;flex-wrap:wrap;gap:6px;min-height:26px}
.spec{font-size:12px;color:var(--ink-soft);background:var(--off);border:1px solid var(--line);padding:3px 9px;border-radius:7px}
.product-card__img{width:100%;height:100%;object-fit:cover;object-position:center center;border-radius:calc(var(--radius) - 2px)}
.product-card__price{color:var(--amber-deep);font-weight:800;font-size:16px;margin-top:auto;padding-top:10px}
.result-count{color:var(--ink-soft);font-size:14px;margin:6px 0 22px}
.empty-state{text-align:center;color:var(--ink-soft);padding:40px 0}

/* ---------- 筛选器 ---------- */
.filters{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;margin-bottom:30px;display:flex;flex-direction:column;gap:18px}
.filter{display:flex;align-items:flex-start;gap:16px;flex-wrap:wrap}
.filter>label{font-size:14px;font-weight:600;min-width:108px;padding-top:6px;color:var(--ink)}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:7px 16px;font-size:13.5px;font-weight:500;cursor:pointer;color:var(--ink-soft);transition:.2s}
.chip:hover{border-color:var(--amber)}
.chip.is-active{background:var(--ink);color:#fff;border-color:var(--ink)}
.filter--search{flex:1}
.filter--search input{margin-left:auto;flex:1;min-width:220px;padding:10px 16px;border:1.5px solid var(--line);border-radius:999px;font-size:14px;outline:none;transition:.2s}
.filter--search input:focus{border-color:var(--amber)}

/* ---------- 定制服务 ---------- */
.craft-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:46px}
.craft{border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;background:#fff;transition:.3s}
.craft:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.craft__no{font-size:13px;font-weight:800;color:var(--amber);letter-spacing:1px}
.craft h4{font-size:18px;margin:10px 0 8px}
.craft p{font-size:14px;color:var(--ink-soft)}
.moq{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:46px}
.moq__item{text-align:center;padding:26px;border-radius:var(--radius);background:var(--ink);color:#fff}
.moq__item strong{display:block;font-size:40px;font-weight:800;color:var(--amber)}
.moq__item span{font-size:14px;opacity:.85}
.steps{counter-reset:step;list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.steps li{position:relative;padding:26px 20px 22px;border-top:3px solid var(--amber);background:#fff;border-radius:0 var(--radius) var(--radius);box-shadow:var(--shadow)}
.steps li span{font-weight:700;font-size:16px;display:block;margin-bottom:6px}
.steps li p{font-size:13.5px;color:var(--ink-soft)}
.steps li::before{counter-increment:step;content:"0" counter(step);position:absolute;top:-16px;left:20px;background:var(--amber);color:#fff;font-weight:800;font-size:13px;width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center}

/* ---------- 品质保障 ---------- */
.quality-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:18px}
.quality-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.quality-card__img{height:200px;background:linear-gradient(135deg,#2a2d34,#3c4250)}
.quality-card__img--lab{background:
  radial-gradient(60% 80% at 30% 30%, rgba(200,145,47,.35), transparent),
  linear-gradient(135deg,#262a31,#3a4150);position:relative}
.quality-card__img--lab::after{content:"CNAS LAB";position:absolute;left:16px;bottom:14px;color:#fff;font-weight:700;letter-spacing:2px;font-size:13px;opacity:.7}
.quality-card figcaption{padding:16px 18px}
.quality-card h4{font-size:17px;margin-bottom:6px}
.quality-card p{font-size:13.5px;color:var(--ink-soft)}
.cert{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:26px 18px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px}
.cert__badge{width:74px;height:74px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;color:#fff}
.cert__badge--fda{background:#2e7d5b}
.cert__badge--ce{background:#2f6db5}
.cert__badge--sgs{background:#d4a017}
.cert figcaption{font-size:13px;color:var(--ink-soft)}
.quality-note{margin-top:22px;font-size:13px;color:var(--ink-soft);text-align:center}

/* ---------- 工厂之旅 ---------- */
.factory-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.factory-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.factory-card__img{height:170px;background:linear-gradient(135deg,#3a4150,#262a31);position:relative}
.factory-card__img.i-furnace{background:linear-gradient(180deg,rgba(31,38,44,0),rgba(31,38,44,.25)),url('../assets/factory/glass-melting-furnace.jpg') center/cover no-repeat}
.factory-card__img.i-machine{background:linear-gradient(180deg,rgba(31,38,44,0),rgba(31,38,44,.25)),url('../assets/factory/bottle-forming-line.jpg') center/cover no-repeat}
.factory-card__img.i-anneal{background:linear-gradient(180deg,rgba(31,38,44,0),rgba(31,38,44,.25)),url('../assets/factory/annealing-furnace.jpg') center/cover no-repeat}
.factory-card__img.i-inspect{background:linear-gradient(180deg,rgba(31,38,44,0),rgba(31,38,44,.25)),url('../assets/factory/auto-sorting-line.jpg') center/cover no-repeat}
.factory-card figcaption{padding:14px 16px;font-size:14px;font-weight:500}

/* ---------- 联系 / 询盘 ---------- */
.contact{display:grid;grid-template-columns:1fr 1.1fr;gap:54px;align-items:start}
.contact__intro .section__title{text-align:left}
.contact__list{list-style:none;margin-top:24px;display:flex;flex-direction:column;gap:10px;font-size:15px;color:var(--ink-soft)}
.contact__list li{padding-left:22px;position:relative}
.contact__list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--amber)}
.inquiry{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:600}
.field input,.field select,.field textarea{border:1.5px solid var(--line);border-radius:var(--radius-sm);padding:11px 14px;font-size:14px;font-family:inherit;outline:none;transition:.2s;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--amber)}
.field textarea{resize:vertical}
.field input:invalid:not(:placeholder-shown){border-color:#d9534f}
.form-note{font-size:12px;color:var(--ink-soft);margin-top:4px;line-height:1.5}
.form-success{grid-column:1/-1;text-align:center;color:#2e7d5b;font-weight:600;background:#eaf6ef;padding:12px;border-radius:var(--radius-sm)}
/* 美化文件选择按钮 */
.file-input-wrap{position:relative;display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap}
.file-input-wrap input[type="file"]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}
.file-btn{display:inline-flex;align-items:center;justify-content:center;padding:9px 18px;border:1.5px solid var(--line);border-radius:var(--radius-sm);font-size:14px;font-weight:600;color:var(--ink);background:#fff;transition:.2s}
.file-input-wrap:hover .file-btn{border-color:var(--amber);color:var(--amber-deep)}
.file-name{font-size:13px;color:var(--ink-soft)}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#cfd3da;padding:60px 0 26px}
.footer__inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1.4fr 2fr;gap:40px}
.footer__brand .brand__text{color:#fff}
.footer__brand .brand__text em{color:#9aa0aa}
.footer__brand p{margin-top:12px;font-size:14px;color:#9aa0aa}
.footer__cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.footer__cols h5{color:#fff;font-size:14px;margin-bottom:14px}
.footer__cols a{display:block;font-size:13.5px;color:#9aa0aa;margin-bottom:9px;transition:.2s}
.footer__cols a:hover{color:var(--amber)}
.footer__copy{text-align:center;margin-top:40px;font-size:12.5px;color:#7a808a;border-top:1px solid rgba(255,255,255,.08);padding-top:22px}
.footer__legal{text-align:center;margin-top:10px;font-size:12px;color:#6b707a;line-height:1.8}
.footer__legal a{color:#9aa0aa;text-decoration:none;margin-right:8px}
.footer__legal a:hover{color:var(--amber);text-decoration:underline}
.footer__admin{color:var(--amber);text-decoration:none;font-weight:600}
.footer__admin:hover{text-decoration:underline}

/* ---------- 弹窗 ---------- */
.modal{position:fixed;inset:0;z-index:80;display:flex;align-items:center;justify-content:center;padding:24px}
.modal[hidden]{display:none}
.modal__backdrop{position:absolute;inset:0;background:rgba(20,22,27,.55);backdrop-filter:blur(3px)}
.modal__panel{position:relative;background:#fff;border-radius:var(--radius);max-width:760px;width:100%;max-height:88vh;overflow:hidden;box-shadow:var(--shadow-lg);display:flex;flex-direction:column}
.modal__close{position:absolute;top:14px;right:16px;background:#fff;border:1px solid var(--line);width:36px;height:36px;border-radius:50%;font-size:22px;line-height:1;cursor:pointer;color:var(--ink);z-index:2}
.modal__close:hover{border-color:var(--ink)}
.modal__body{padding:34px;overflow-y:auto}
.pd{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.pd__left{display:flex;flex-direction:column;gap:14px}
.pd__stage-wrap{background:radial-gradient(120% 120% at 50% 18%,#fbfcfd,#e9edf1);border:1px solid var(--line);border-radius:var(--radius);padding:18px;display:flex;align-items:center;justify-content:center;aspect-ratio:1/1;overflow:hidden}
.pd__stage{width:100%;height:100%;max-height:420px;border-radius:10px;object-fit:contain;display:block;background:#fff}
.pd__stage svg{width:70%;filter:drop-shadow(0 12px 24px rgba(35,38,45,.16))}
/* 自定义视频播放器 */
.vplayer{position:relative;width:100%;aspect-ratio:1/1;background:#000;border-radius:10px;overflow:hidden}
.vplayer__video{width:100%;height:100%;object-fit:contain;display:block;background:#000}
.vplayer__overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(20,22,27,.18);transition:opacity .25s;z-index:2}
.vplayer__play{width:62px;height:62px;border-radius:50%;border:none;background:rgba(255,255,255,.94);color:var(--amber-deep);font-size:22px;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 22px rgba(0,0,0,.28);transition:transform .2s}
.vplayer__play:hover{transform:scale(1.06)}
.vplayer__controls{position:absolute;left:0;right:0;bottom:0;display:flex;align-items:center;gap:10px;padding:10px 12px;background:linear-gradient(transparent,rgba(0,0,0,.6));z-index:3}
.vplayer__btn{background:none;border:none;color:#fff;cursor:pointer;font-size:15px;line-height:1;padding:0;width:22px;flex:0 0 auto}
.vplayer__progress{flex:1;height:5px;background:rgba(255,255,255,.3);border-radius:3px;cursor:pointer;overflow:hidden}
.vplayer__bar{height:100%;width:0;background:var(--amber);border-radius:3px}
.vplayer__time{color:#fff;font-size:12px;white-space:nowrap;flex:0 0 auto}
.pd__thumbs{display:flex;gap:10px}
.pd__thumb{position:relative;width:74px;height:74px;border:2px solid var(--line);background:#fff;border-radius:12px;overflow:hidden;cursor:pointer;padding:0;transition:.2s;flex:0 0 auto}
.pd__thumb img{width:100%;height:100%;object-fit:cover;display:block}
.pd__thumb.is-active{border-color:var(--amber)}
.pd__thumb-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(20,22,27,.35);color:#fff;font-size:18px}
.pd__info{min-width:0}
.pd__cat{color:var(--amber-deep);font-weight:700;font-size:12.5px;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:8px}
.pd__name{font-size:22px;font-weight:800;line-height:1.35;margin-bottom:10px;letter-spacing:-.3px}
.pd__price-big{font-size:26px;font-weight:800;color:var(--amber-deep);margin-bottom:4px}
.pd__block{margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}
.pd__block-title{font-size:13px;font-weight:700;color:var(--ink);margin-bottom:12px;letter-spacing:.5px;position:relative;padding-left:11px}
.pd__block-title::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:14px;border-radius:2px;background:var(--amber)}
.pd__specs{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}
.pd__spec{display:flex;align-items:center;justify-content:space-between;gap:8px;background:var(--off);border:1px solid var(--line);border-radius:10px;padding:9px 12px}
.pd__spec-label{font-size:13px;color:var(--ink-soft)}
.pd__spec-price{font-size:14px;font-weight:700;color:var(--amber-deep);white-space:nowrap}
.pd__attrs-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 18px}
.pd__attr{display:flex;flex-direction:column;gap:2px;font-size:13.5px}
.pd__attr-k{color:var(--ink-soft);font-size:12px}
.pd__attr-v{font-weight:600;color:var(--ink)}
.pd__add{margin-top:26px}

/* ---------- Toast ---------- */
.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;
  padding:13px 24px;border-radius:999px;font-size:14px;z-index:90;opacity:0;transition:.3s;box-shadow:var(--shadow-lg)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast[hidden]{display:none}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .advantages__grid,.craft-grid,.moq,.steps,.factory-grid{grid-template-columns:repeat(2,1fr)}
  .quality-grid{grid-template-columns:1fr 1fr}
  .contact{grid-template-columns:1fr;gap:34px}
  .inquiry{grid-template-columns:1fr}
  .pd{grid-template-columns:1fr}
  .footer__inner{grid-template-columns:1fr}
}
@media (max-width:760px){
  body{overflow-x:hidden}
  .nav__links{position:fixed;top:64px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:10px 24px;
    border-bottom:1px solid var(--line);transform:translateY(-120%);transition:.3s;box-shadow:var(--shadow);max-height:calc(100vh - 64px);overflow-y:auto}
  .nav__links.is-open{transform:translateY(0)}
  .nav__links a{padding:14px 0;border-bottom:1px solid var(--line)}
  .nav__burger{display:flex}
  /* 窄屏顶栏空间有限，1688 入口移至页脚显示 */
  .nav__ali{display:none}
  .filters .filter>label{min-width:100%}
  .filter--search input{margin-left:0}
  /* 优势 / MOQ 竖排；工艺 / 步骤 / 工厂 / 品质 2 列；产品卡保持 2 列 */
  .advantages__grid,.moq{grid-template-columns:1fr}
  .craft-grid,.steps,.factory-grid,.quality-grid{grid-template-columns:repeat(2,1fr)}
  /* 弹窗在窄屏更贴边 */
  .modal{padding:12px}
  .modal__body{padding:22px}
  .section{padding:84px 0 64px}
  .advantages{padding:80px 0 64px}
  .hero{padding:104px 20px 64px;min-height:auto}
}

/* ---------- 手机（≤520px）精修 ---------- */
@media (max-width:520px){
  .container{padding:0 18px}
  .nav__inner{padding:12px 18px}
  .product-grid{gap:14px}
  .section{padding:54px 0}
  .section__title{font-size:clamp(22px,7vw,30px)}
  .hero__title{font-size:clamp(28px,8vw,40px)}
  .hero__sub{font-size:15px}
  .hero__cta{flex-direction:column}
  .hero__cta .btn{width:100%}
  .product-card__name{font-size:15px}
  .product-card__body{padding:13px 13px 15px}
  .footer__cols{grid-template-columns:1fr;gap:18px}
  .footer__inner{gap:26px}
  .modal__body{padding:18px}
  .pd__specs{grid-template-columns:1fr}
  .inquiry{padding:22px}
  .filters{padding:18px}
  .advantage{padding:28px 20px}
  .craft{padding:22px 18px}
  .moq__item strong{font-size:34px}
}