/* ============================================================
   MEKONG HI v3 – 双端单独适配 + 高端化设计系统
   ①tokens/共用  ②手机端专属(≤899px)  ③PC端专属(≥900px)
   ============================================================ */
:root{
  --do:#B02A24; --do-dam:#7E1E1A; --do-nhat:#F7E8E6;
  --xanh:#1F3D2B; --xanh-nhat:#E8F0EA;
  --vang:#C9A050; --vang-sang:#E8C87E; --vang-nhat:#F6EEDD;
  --kem:#FAF7F2; --kem-2:#F0E9DE;
  --muc:#2B2B28; --xam:#6E6A61; --trang:#FFFFFF;
  --nau:#241310;
  --radius:14px; --radius-sm:10px;
  --shadow:0 1px 2px rgba(43,43,40,.05),0 10px 28px -14px rgba(43,43,40,.14);
  --fs-display:clamp(30px,5vw,50px);
  --fs-h2:clamp(22px,3vw,31px);
  --fs-h3:clamp(16px,2vw,18px);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Be Vietnam Pro',-apple-system,'Segoe UI',Roboto,Arial,sans-serif;color:var(--muc);background:var(--kem);line-height:1.65;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 16px}
.icon{width:22px;height:22px;stroke:currentColor;stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round;flex:none}
.btn .icon{width:18px;height:18px}
.eyebrow{display:inline-block;color:var(--do);font-weight:600;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px}
.eyebrow::before{content:"";display:inline-block;width:22px;height:1.5px;background:var(--vang);vertical-align:middle;margin-right:8px}
h1,.section-title,.cta-band h2,.page-hero h1{font-family:'Playfair Display','Be Vietnam Pro',serif;letter-spacing:-.01em}
.section-title{font-weight:700;color:var(--muc);text-align:center;margin-bottom:8px;font-size:var(--fs-h2)}
.section-title::after{content:"";display:block;width:56px;height:2px;background:linear-gradient(90deg,transparent,var(--vang),transparent);margin:14px auto 0}
.section-sub{text-align:center;color:var(--xam);max-width:660px;margin:0 auto 32px}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;background:var(--trang);box-shadow:0 1px 0 rgba(0,0,0,.06)}
.topbar{background:var(--xanh);color:#DCE7DE;padding:6px 0}
.topbar .container{display:flex;justify-content:space-between;gap:12px}
.topbar a{color:#fff;font-weight:600;display:inline-block;padding:2px 0}
.nav{display:flex;align-items:center;gap:14px;max-width:1200px;margin:0 auto}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--do);flex:1}
.logo .mark{border-radius:50%;background:radial-gradient(circle at 30% 28%,#C9403A,var(--do) 60%,var(--do-dam));box-shadow:inset 0 0 0 1.5px rgba(201,160,80,.55);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.logo small{display:block;font-size:9.5px;font-weight:600;color:var(--xam);letter-spacing:.05em}
.menu{list-style:none;align-items:center}
.lang{font-size:12.5px;color:var(--xam);border:1px solid var(--kem-2);border-radius:8px;padding:5px 9px;white-space:nowrap}
.lang b{color:var(--do)}
.hamburger{background:none;border:1px solid var(--kem-2);border-radius:8px;min-width:44px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;font-size:19px;cursor:pointer;color:var(--muc)}
.mobile-menu{display:none;background:var(--trang);border-top:1px solid var(--kem-2)}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:14px 20px;border-bottom:1px solid var(--kem);font-weight:500;font-size:15.5px}
.mobile-menu a.active{color:var(--do);background:var(--do-nhat)}
.mm-lang{padding:14px 20px;font-size:14px;color:var(--xam);border-top:1px solid var(--kem-2)}
.mm-lang b{color:var(--do)}

/* ---------- page hero (内页公共) ---------- */
.page-hero{background:linear-gradient(115deg,var(--nau) 0%,#3A2A1A 55%,var(--xanh) 100%);color:#fff;padding:44px 0;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 320px at 82% 20%,rgba(201,160,80,.18),transparent 65%);pointer-events:none}
.page-hero h1{font-size:var(--fs-h2);position:relative}
.page-hero .crumb{color:rgba(255,255,255,.65);font-size:13.5px;margin-top:6px;position:relative}
.page-hero.hot{background:linear-gradient(115deg,var(--nau) 0%,#4A1511 55%,var(--do-dam) 100%)}
.tag-hot{display:inline-block;vertical-align:middle;margin-left:10px;font-size:12px;font-weight:700;letter-spacing:.06em;color:#3A2A08;background:linear-gradient(135deg,var(--vang-sang),var(--vang));padding:4px 12px;border-radius:999px;text-transform:uppercase;font-family:'Be Vietnam Pro',sans-serif}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-weight:600;border:none;cursor:pointer;transition:transform .15s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease}
.btn:active{transform:scale(.97)}
.btn:focus-visible{outline:3px solid rgba(176,42,36,.35);outline-offset:2px}
.btn-do{background:var(--do);color:#fff;box-shadow:0 6px 18px rgba(176,42,36,.28)}
.btn-do:hover{background:var(--do-dam);box-shadow:0 8px 22px rgba(126,30,26,.34)}
.btn-vien{background:transparent;color:var(--do);border:1.5px solid var(--do)}
.btn-vien:hover{background:var(--do-nhat)}
.btn-trang{background:#fff;color:var(--do)}
.btn-ghost-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.65)}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-xanh{background:#0068FF;color:#fff}

/* ---------- hero / trust ---------- */
.hero{position:relative;color:#FDF6EC;background:linear-gradient(115deg,#241310 0%,#4A1511 50%,#7E1E1A 100%);overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(900px 480px at 78% 28%,rgba(201,160,80,.22),transparent 65%);pointer-events:none}
.hero .container{position:relative}
.hero h1{font-weight:700;line-height:1.18;font-size:var(--fs-display)}
.hero p{color:rgba(253,246,236,.78)}
.hero .eyebrow{color:var(--vang)}
.hero .eyebrow::before{background:var(--vang)}
.hero-note{font-size:13px;color:rgba(253,246,236,.6);margin-top:10px}
.hero-cta{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap}
.hero-proof{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:18px;font-size:13px;color:rgba(253,246,236,.75)}
.hero-proof b{color:var(--vang-sang)}
.hero-visual{background:rgba(255,255,255,.08);border:1px dashed rgba(255,255,255,.4);border-radius:16px;display:flex;align-items:center;justify-content:center;color:rgba(253,246,236,.65);text-align:center;padding:20px}
.trust{background:var(--trang);border-bottom:1px solid var(--kem-2)}
.trust .container{display:grid}
.trust-item{display:flex;gap:10px;align-items:center;font-weight:600}
.trust-item .icon{width:26px;height:26px;color:var(--xanh)}

/* ---------- 卡片/网格/占位图 ---------- */
.grid{display:grid;gap:20px}
.card{background:var(--trang);border-radius:var(--radius);border:1px solid rgba(201,160,80,.16);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column}
.card-body{padding:16px;flex:1;display:flex;flex-direction:column;gap:6px}
.ph{background:var(--kem-2);color:var(--xam);display:flex;align-items:center;justify-content:center;font-size:13px;text-align:center;padding:10px;border-radius:0}
.ph-r{border-radius:var(--radius-sm)}
.ph-4x3{aspect-ratio:4/3}.ph-16x9{aspect-ratio:16/9}.ph-1x1{aspect-ratio:1/1}
.sp-ten{font-weight:600;line-height:1.4}
.sp-gia{color:var(--do);font-weight:700;font-variant-numeric:tabular-nums lining-nums}
.sp-gia .tu{font-size:.72em;font-weight:500;color:var(--xam);margin-right:2px}
.lien-he-gia{color:var(--do);font-weight:600;font-size:.94em;letter-spacing:.01em}
.sp-gia small{color:var(--xam);font-weight:500;font-size:12.5px}
.badge{position:absolute;top:10px;left:10px;background:var(--do);color:#fff;font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;z-index:2}
.badge-vang,.badge-sale{background:linear-gradient(135deg,var(--vang-sang),var(--vang));color:#3A2A08}
.sp-anh{position:relative}.sp-anh img{width:100%;height:auto;aspect-ratio:1/1;object-fit:cover;display:block}
.sp-mini-cta{margin-top:8px;display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:13px;font-weight:600;color:var(--do);border:1px solid var(--do-nhat);background:var(--do-nhat);border-radius:999px;padding:8px 12px}
.chips{display:flex;gap:8px;margin-bottom:24px}
.chip{padding:9px 16px;border-radius:999px;border:1px solid var(--kem-2);background:var(--trang);font:inherit;font-size:13.5px;font-weight:500;cursor:pointer;white-space:nowrap}
.chip.active{background:var(--do);border-color:var(--do);color:#fff}

/* ---------- 评价/合作/保障 ---------- */
.review-card .stars{color:var(--vang);font-size:15px;letter-spacing:2px}
.review-card p{font-size:14.5px;color:var(--muc)}
.review-card .who{font-size:13px;color:var(--xam);display:flex;align-items:center;gap:10px;margin-top:auto}
.review-card .ava{width:38px;height:38px;border-radius:50%;background:var(--kem-2);display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--xam);flex:none}
.b2b{background:linear-gradient(115deg,var(--xanh) 0%,#152418 100%);color:#fff;position:relative;overflow:hidden}
.b2b::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 340px at 15% 15%,rgba(201,160,80,.15),transparent 60%)}
.b2b .container{position:relative}
.b2b h2{font-family:'Playfair Display',serif;font-size:var(--fs-h2);margin-bottom:14px}
.b2b ul{list-style:none;display:grid;gap:10px;margin:18px 0 24px}
.b2b li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.88)}
.b2b li .icon{color:var(--vang-sang);width:20px;height:20px;margin-top:3px}
.dambao{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:13px;color:var(--xam);margin:14px 0}
.dambao span{display:inline-flex;align-items:center;gap:6px}
.dambao .icon{width:17px;height:17px;color:var(--xanh)}
.camket-box{font-size:13.5px;color:var(--muc);background:var(--vang-nhat);border:1px solid rgba(201,160,80,.35);border-radius:var(--radius-sm);padding:10px 14px;margin:12px 0}
.note-line{font-size:13px;color:var(--xam);border-left:3px solid var(--vang);padding-left:10px;margin-top:12px}

/* ---------- 表格/表单 ---------- */
.table-wrap{border-radius:var(--radius);box-shadow:var(--shadow)}
.ss-table{width:100%;border-collapse:collapse;background:var(--trang);border-radius:var(--radius);overflow:hidden}
.ss-table th,.ss-table td{padding:13px 14px;border-bottom:1px solid var(--kem);text-align:left}
.ss-table th{background:var(--xanh);color:#fff;font-weight:600}
.ss-table td:nth-child(2){color:var(--do);font-weight:600;background:var(--do-nhat)}
.ss-table td:first-child{color:var(--xam)}
.form{display:grid;gap:14px}
.form label{font-size:13.5px;font-weight:600;display:block;margin-bottom:5px}
.form input,.form select,.form textarea{width:100%;padding:12px 14px;border:1px solid #DDD6C9;border-radius:10px;font:inherit;font-size:14.5px;background:var(--trang)}
.form input:focus,.form textarea:focus,.form select:focus{outline:2px solid var(--do);border-color:transparent}
.form .row{display:grid;gap:14px}
.form .hp{position:absolute;left:-9999px;opacity:0}
.form-promise{font-size:12.5px;color:var(--xam)}
.search{position:relative;min-width:240px}
.search .icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--xam)}
.search input{width:100%;padding:11px 16px 11px 42px;border:1px solid #DDD6C9;border-radius:999px;font:inherit;background:#fff}

/* ---------- 详情页 ---------- */
.breadcrumb{font-size:13px;color:var(--xam);padding:16px 0}
.breadcrumb a:hover{color:var(--do)}
.detail{display:grid}
.gallery-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:10px}
.gallery-thumbs .ph{border-radius:8px;cursor:pointer;border:2px solid transparent}
.gallery-thumbs .ph.active{border-color:var(--do)}
.spec-table{width:100%;border-collapse:collapse;font-size:14px}
.spec-table td{padding:10px 12px;border-bottom:1px solid var(--kem)}
.spec-table td:first-child{color:var(--xam);width:38%}
.tab-nav{display:flex;gap:4px;border-bottom:2px solid var(--kem-2);margin-bottom:18px;overflow-x:auto}
.tab-nav button{background:none;border:none;padding:11px 16px;font:inherit;font-weight:600;color:var(--xam);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;white-space:nowrap}
.tab-nav button.active{color:var(--do);border-color:var(--do)}
.tab-panel{display:none}
.tab-panel.active{display:block}
.tab-panel h3{font-size:15.5px;margin:14px 0 4px}
.sold-badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--do);background:var(--do-nhat);border-radius:999px;padding:5px 12px;margin-bottom:8px}

/* ---------- 新闻/文章 ---------- */
.tin-meta{font-size:12.5px;color:var(--xam)}
.tin-cat{color:var(--do);font-weight:600}
.card h3 a:hover{color:var(--do)}
.article{max-width:760px;margin:0 auto}
.article h1{font-size:clamp(24px,3.6vw,36px);line-height:1.3;margin-bottom:10px}
.article .body p{margin:0 0 16px;color:#3A3833}
.article .body h2{font-size:21px;margin:26px 0 10px}
.article .body ul,.article .body ol{margin:0 0 16px;padding-left:22px;color:#3A3833}
.article .body li{margin-bottom:6px}
.article .body table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:14px;background:var(--trang);border-radius:var(--radius-sm);overflow:hidden}
.article .body th,.article .body td{padding:10px 12px;border-bottom:1px solid var(--kem-2);text-align:left}
.article .body th{background:var(--xanh);color:#fff;font-weight:600}
.article-cta{background:var(--vang-nhat);border:1px solid rgba(201,160,80,.35);border-radius:var(--radius);padding:18px 20px;margin:24px 0}
.article-cta b{display:block;margin-bottom:6px}
.article-note{font-size:13px;color:var(--xam);background:var(--kem);border-left:3px solid var(--vang);padding:10px 14px;border-radius:0;margin:24px 0}

/* ---------- 图库/CTA/页脚 ---------- */
.album-grid{display:grid;gap:12px}
.album-grid .lb{cursor:zoom-in}
.cta-band{background:var(--xanh);color:#fff;text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 50% 0%,rgba(201,160,80,.14),transparent 65%)}
.cta-band>*{position:relative}
.cta-band p{color:#C9D8CC;max-width:580px;margin:0 auto 22px}
.cta-band .ava{width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,.15);border:2px solid var(--vang);display:inline-flex;align-items:center;justify-content:center;font-size:11px;color:#fff;margin-bottom:12px}
footer{position:relative;background:linear-gradient(180deg,#1C3123 0%,#152418 100%);color:#B9C7BC;font-size:14px}
footer::before{content:"";display:block;height:2px;background:linear-gradient(90deg,transparent,var(--vang) 30%,var(--vang) 70%,transparent)}
.foot{display:grid;max-width:1200px;margin:0 auto}
.foot h4{color:#fff;font-size:15px;margin-bottom:12px}
.foot a{display:block;padding:4px 0;width:fit-content;border-bottom:1px solid transparent;transition:.2s}
.foot a:hover{color:#fff;border-color:var(--vang)}
.foot .logo{color:#fff;margin-bottom:10px}
.foot-social{display:flex;gap:10px;margin-top:12px}
.foot-social a{width:38px;height:38px;border:1px solid rgba(255,255,255,.22);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;padding:0;font-size:13px;font-weight:700;transition:.2s}
.foot-social a:hover{border-color:var(--vang);color:var(--vang);transform:translateY(-2px)}
.bct-badge{display:inline-block;margin-top:12px;font-size:11px;font-weight:700;color:#7FB3E8;border:1px dashed rgba(127,179,232,.5);border-radius:6px;padding:6px 10px}
.disclaimer{border-top:1px solid rgba(255,255,255,.12);padding:16px;text-align:center;font-size:13px;color:#C9D8CC}

/* ---------- 悬浮联系 / lightbox ---------- */
.float-contact{position:fixed;right:18px;bottom:24px;display:none;flex-direction:column;gap:10px;z-index:60}
.float-contact a{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 14px rgba(0,0,0,.25),inset 0 0 0 1.5px rgba(255,255,255,.35);transition:transform .15s}
.float-contact a:hover{transform:scale(1.1)}
.float-contact .icon{width:24px;height:24px}
.fc-zalo{background:#0068FF}.fc-phone{background:var(--do)}.fc-fb{background:#1877F2}
.bottom-bar{position:fixed;left:0;right:0;bottom:0;display:flex;z-index:60;box-shadow:0 -2px 10px rgba(0,0,0,.12)}
.bottom-bar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;color:#fff;font-weight:600;font-size:12px;padding:8px 4px calc(8px + env(safe-area-inset-bottom))}
.bottom-bar .icon{width:20px;height:20px}
.bb-zalo{background:#0068FF}.bb-phone{background:var(--do)}.bb-form{background:var(--xanh)}
.lb-overlay{position:fixed;inset:0;background:rgba(20,12,8,.88);z-index:100;display:none;align-items:center;justify-content:center;padding:24px}
.lb-overlay.open{display:flex}
.lb-box{background:var(--kem-2);color:var(--xam);border-radius:12px;max-width:860px;width:100%;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;text-align:center;padding:24px;font-size:15px}
.lb-close{position:absolute;top:18px;right:22px;color:#fff;font-size:34px;background:none;border:none;cursor:pointer;line-height:1}

/* ============================================================
   ② 手机端专属 (≤899px)
   ============================================================ */
@media (max-width:899px){
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom));font-size:15px}
  .topbar{font-size:11.5px}
  .topbar .container span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .nav{padding:8px 14px;gap:10px}
  .logo{font-size:17px}
  .logo .mark{width:34px;height:34px;font-size:13.5px}
  .menu{display:none}
  .lang{display:none}
  .section{padding:34px 0}
  .section-sub{font-size:13.5px;margin-bottom:22px;padding:0 8px}
  .page-hero{padding:32px 0}

  .hero{padding:38px 0 42px}
  .hero .container{display:grid;gap:22px}
  .hero p{font-size:14.5px}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%;padding:14px 20px;font-size:15.5px}
  .hero-visual{min-height:170px;font-size:12.5px}
  .btn{padding:12px 20px;font-size:14.5px}

  .trust .container{grid-template-columns:1fr 1fr}
  .trust-item{padding:12px 6px;font-size:12px}
  .trust-item .icon{width:20px;height:20px}

  .grid{gap:12px}
  .g2,.g3{grid-template-columns:1fr}
  .g4{grid-template-columns:1fr 1fr}
  .card-body{padding:12px;gap:4px}
  .sp-ten{font-size:13.5px}
  .sp-gia{font-size:14px}
  .badge{font-size:10.5px;padding:3px 8px;top:8px;left:8px}
  .sp-mini-cta{font-size:12.5px;padding:8px 10px;width:100%}

  .chips{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;justify-content:flex-start;-webkit-overflow-scrolling:touch;scrollbar-width:none;-webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);mask-image:linear-gradient(90deg,#000 88%,transparent);scroll-snap-type:x proximity}
  .chips::-webkit-scrollbar{display:none}
  .chip{padding:10px 18px;font-size:14px;scroll-snap-align:start}

  .table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .ss-table{min-width:560px}
  .ss-table th,.ss-table td{font-size:13px;padding:11px 12px}
  .ss-table td:first-child,.ss-table th:first-child{position:sticky;left:0;background:var(--trang);box-shadow:2px 0 6px rgba(43,43,40,.06);z-index:1}
  .ss-table th:first-child{background:var(--xanh)}

  .detail{gap:22px;grid-template-columns:1fr}
  .tab-nav button{font-size:13.5px;padding:10px 12px}
  .album-grid{grid-template-columns:1fr 1fr}
  .form .row{grid-template-columns:1fr}
  .form input,.form select,.form textarea,.search input{font-size:16px}
  .cta-band{padding:36px 16px}
  .cta-band h2{font-size:20px;margin-bottom:8px}
  .cta-band p{font-size:14px}
  .cta-band .btn{width:100%;max-width:340px}
  .b2b .container{padding-top:36px;padding-bottom:36px}
  /* 底部: 两栏链接并排, 公司信息与联系方式跨整行 —— 原单栏堆叠高达1.37屏 */
  .foot{gap:18px 14px;padding:26px 16px 16px;grid-template-columns:1fr 1fr;text-align:left}
  .foot>*:first-child{grid-column:1/-1}
  .foot>*:last-child{grid-column:1/-1}
  .foot h4{font-size:14px;margin-bottom:7px}
  .foot a{padding:5px 0;font-size:13.5px}
  .foot>*:first-child p{font-size:12.5px;line-height:1.65;margin-top:6px}
  .foot .logo{margin-bottom:6px}
  .bct-badge{margin-top:9px;font-size:10.5px;padding:5px 8px;line-height:1.4}
  .disclaimer{padding:13px 16px;font-size:12px;line-height:1.55}

  /* ---- 手机阅读优化 (2026-08-12 实测调整) ----
     越南文有上下叠加的声调符(ế ộ ữ ỷ), 行高低于1.35会视觉碰撞,
     故手机端所有标题统一放宽行高; 正文放大到16px符合长文阅读标准 */
  .hero h1{line-height:1.32}
  h1,.section-title,.cta-band h2,.page-hero h1,.article h1{line-height:1.34}
  h2,h3{line-height:1.4}
  .hero p{font-size:15.5px;line-height:1.7}

  /* 文章长文阅读: 16px + 宽行距 + 段间留白 */
  .article .body{font-size:16px;line-height:1.75}
  .article .body p{margin:0 0 18px}
  .article .body h2{font-size:19.5px;line-height:1.4;margin:30px 0 12px}
  .article .body li{margin-bottom:9px;line-height:1.7}
  .article .body ul,.article .body ol{margin:0 0 18px;padding-left:20px}
  /* 文章内表格(营养成分/用量表)手机端横滑, 不挤压文字 */
  .article .body table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap;font-size:14.5px}
  .article .body th,.article .body td{padding:11px 14px}
  .article-cta{padding:16px 16px;margin:22px 0}
  .article-cta .btn{width:100%;justify-content:center}

  /* 产品卡: 名称/价格加大, 避免两列时挤成小字 */
  .sp-ten{font-size:14.5px;line-height:1.45}
  .sp-gia{font-size:15px}
  .sp-mini-cta{font-size:13px;padding:10px;min-height:40px}

  /* 触摸目标: 导航/链接类不小于44px高(iOS人机指南) */
  .mobile-menu a{min-height:46px;display:flex;align-items:center}
  .bottom-bar a{min-height:52px;justify-content:center}
  .tab-nav button{min-height:44px}
  /* 越南文长词不断行导致溢出的兜底 */
  h1,h2,h3,.sp-ten,.section-title{overflow-wrap:break-word}
}

/* ============================================================
   ③ PC端专属 (≥900px)
   ============================================================ */
@media (min-width:900px){
  .topbar{font-size:12.5px}
  .nav{padding:14px 16px}
  .logo{font-size:20px}
  .logo .mark{width:40px;height:40px;font-size:15px}
  .hamburger,.mobile-menu{display:none!important}
  .menu{display:flex;gap:2px}
  .menu a{padding:9px 13px;border-radius:8px;font-size:15px;font-weight:500;color:var(--muc)}
  .menu a:hover,.menu a.active{color:var(--do);background:var(--do-nhat)}
  .section{padding:72px 0}
  .section-sub{font-size:15.5px;margin-bottom:40px}
  .page-hero{padding:52px 0}

  .hero{padding:84px 0 92px}
  .hero .container{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
  .hero p{font-size:17px;max-width:540px}
  .hero-visual{min-height:380px;font-size:14px}
  .btn{padding:13px 26px;font-size:15px}

  .trust .container{grid-template-columns:repeat(4,1fr)}
  .trust-item{padding:18px 10px;font-size:14px;justify-content:center}

  .grid{gap:24px}
  .g2{grid-template-columns:1fr 1fr}
  .g3{grid-template-columns:repeat(3,1fr)}
  .g4{grid-template-columns:repeat(4,1fr)}
  .card{transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
  a.card:hover,.card.hov:hover{transform:translateY(-5px);box-shadow:0 10px 28px rgba(43,43,40,.14);border-color:rgba(201,160,80,.45)}
  .sp-ten{font-size:15.5px}
  .sp-gia{font-size:16px}

  .chips{flex-wrap:wrap;justify-content:center}
  .chip:hover{border-color:var(--do);color:var(--do)}
  .chip.active:hover{color:#fff}

  .detail{grid-template-columns:1fr 1fr;gap:40px}
  .album-grid{grid-template-columns:repeat(3,1fr)}
  .album-grid .ph{transition:transform .2s}
  .album-grid .ph:hover{transform:scale(1.02)}
  .form .row{grid-template-columns:1fr 1fr}
  .cta-band{padding:64px 16px}
  .cta-band h2{font-size:28px;margin-bottom:10px}
  .b2b .container{padding-top:64px;padding-bottom:64px;display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center}
  .foot{gap:32px;padding:52px 16px 32px;grid-template-columns:1.5fr 1fr 1fr 1.2fr}

  .bottom-bar{display:none}
  .float-contact{display:flex}
}