/* ============================================================
   KANGYIDA SUPPLY · 黑金高级版样式（首页 + 产品详情页共享）
   设计基调：深黑底 + 哑光金 + 衬线标题字（Georgia 系，衬线显高级）
   ============================================================ */

:root {
  --bg:        #0a0a0a;
  --bg-2:      #0e0e0e;
  --bg-soft:   #121212;
  --bg-card:   #151515;
  --line:      rgba(201,162,75,.14);
  --line-2:    #242424;
  --gold:      #c8a24e;
  --gold-2:    #e3c67f;
  --gold-dim:  rgba(200,162,78,.55);
  --text:      #ece9e2;
  --muted:     #9a968c;
  --serif:     Georgia, "Times New Roman", "Songti TC", "PMingLiU", serif;
  --sans:      "Segoe UI", Arial, "Microsoft YaHei", sans-serif;
  --ease-out:  cubic-bezier(.22,1,.36,1);
  --ease-soft: cubic-bezier(.16,1,.3,1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font: 15px/1.75 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
::selection { background: rgba(200,162,78,.3); }
.wrap { width: min(1180px, calc(100% - 56px)); margin-inline: auto; }

/* 金色文字 */
.gold { color: var(--gold); }
.gold-grad { background: linear-gradient(112deg, var(--gold) 20%, #fff0c9 42%, var(--gold-2) 52%, var(--gold) 72%);
             background-size: 220% 100%; -webkit-background-clip: text; background-clip: text; color: transparent;
             animation: goldShine 5s linear infinite; }
@keyframes goldShine { 0% { background-position: 130% 0; } 100% { background-position: -130% 0; } }

/* ---------- 预加载幕布（帷幕对开） ---------- */
#preloader { position: fixed; inset: 0; z-index: 100; pointer-events: none; }
#preloader .panel { position: absolute; left: 0; right: 0; height: 50.5%; background: #070707;
                    transition: transform 1s var(--ease-soft); }
#preloader .panel.top { top: 0; border-bottom: 1px solid rgba(200,162,78,.25); }
#preloader .panel.bot { bottom: 0; }
#preloader .pre-box { position: absolute; inset: 0; display: grid; place-items: center; z-index: 2;
                      transition: opacity .5s ease; }
#preloader.done .pre-box { opacity: 0; }
#preloader.done .panel.top { transform: translateY(-102%); }
#preloader.done .panel.bot { transform: translateY(102%); }
#preloader.done { visibility: hidden; transition: visibility 0s 1s; }
.pre-logo { font-size: 20px; letter-spacing: 2px; font-weight: 700; }
.pre-logo em { color: var(--gold); font-style: normal; }
.pre-logo small { display: block; font-size: 10px; color: var(--muted); font-weight: 400; letter-spacing: 6px; margin-top: 8px; }
.pre-line { width: 200px; height: 1px; margin: 28px auto 14px; background: rgba(200,162,78,.18); overflow: hidden; }
.pre-line i { display: block; height: 100%; width: 100%; background: linear-gradient(90deg, var(--gold), var(--gold-2));
              transform-origin: left; transform: scaleX(0); }
.pre-num { font-size: 12px; color: var(--muted); letter-spacing: 3px; font-variant-numeric: tabular-nums; }
.pre-num b { color: var(--gold); font-weight: 600; }

/* ---------- 顶部导航 ---------- */
header { position: fixed; top: 0; left: 0; right: 0; z-index: 65;
         background: linear-gradient(180deg, rgba(10,10,10,.88), rgba(10,10,10,0));
         transition: background .4s, transform .5s var(--ease-out); }
header.scrolled { background: rgba(10,10,10,.93); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
header.hidden-up { transform: translateY(-100%); }
.header-inner { height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { font-size: 17px; font-weight: 700; letter-spacing: 1.5px; }
.brand em { color: var(--gold); font-style: normal; }
.brand small { display: block; font-size: 10px; color: var(--muted); font-weight: 400; letter-spacing: 5px; margin-top: 2px; }
nav { display: flex; gap: 28px; font-size: 13px; color: var(--muted); }
nav a { position: relative; padding: 5px 0; letter-spacing: 1px; transition: color .3s; }
nav a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px;
               background: linear-gradient(90deg, var(--gold), var(--gold-2));
               transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease-out); }
nav a:hover { color: var(--gold); }
nav a:hover::after { transform: scaleX(1); }

/* 语言切换 */
.lang-switch { display: flex; gap: 2px; border: 1px solid var(--line); padding: 3px; }
.lang-switch button { appearance: none; border: 0; background: transparent; color: var(--muted);
                      font: 11px/1 var(--sans); letter-spacing: 1px; padding: 6px 10px; cursor: pointer;
                      transition: .3s; }
.lang-switch button:hover { color: var(--gold-2); }
.lang-switch button.on { background: linear-gradient(135deg, var(--gold), var(--gold-2)); color: #181205; font-weight: 600; }

/* ---------- 移动端汉堡菜单（R03） ---------- */
.menu-toggle { display: none; appearance: none; border: 1px solid var(--line); background: transparent;
               width: 44px; height: 44px; cursor: pointer; color: var(--gold);
               font-size: 22px; line-height: 1; letter-spacing: 0; position: relative; z-index: 70;
               transition: border-color .3s, background .3s, color .3s; }
.menu-toggle::before { content: "☰"; }
.menu-toggle.active::before { content: "✕"; }
.menu-toggle.active { border-color: var(--gold); background: rgba(200,162,78,.12); }
.menu-toggle:hover { border-color: var(--gold); background: rgba(200,162,78,.08); }

.mobile-nav { position: fixed; inset: 0; z-index: 60;
              background: #0d0d0d;
              display: flex; flex-direction: column; align-items: center; justify-content: center;
              gap: 28px;
              opacity: 0; visibility: hidden; pointer-events: none;
              transition: opacity .35s ease, visibility .35s ease; }
.mobile-nav.open { opacity: 1; visibility: visible; pointer-events: auto; }
.mobile-nav a { color: var(--text); font-size: 18px; letter-spacing: 3px;
                padding: 10px 20px; transition: color .3s; }
.mobile-nav a:hover { color: var(--gold); }
.mobile-nav .lang-switch { margin-top: 10px; }
.mobile-nav .lang-switch button { font-size: 13px; padding: 8px 16px; }
.mobile-nav .mnav-line { width: 48px; height: 1px; background: rgba(200,162,78,.35); }
@media (max-width: 1024px) {
  .menu-toggle { display: grid; place-items: center; }
  nav { display: none; }
}

/* ---------- 首屏 ---------- */
/* 背景统一为 --bg，避免 sticky 脱离瞬间和下一屏底色产生色阶跳变 */
.hero { position: relative; height: 280vh; background: var(--bg); }
.hero-sticky { position: sticky; top: 0; height: 100vh; min-height: 620px; overflow: hidden; }
#heroCanvas { position: absolute; inset: 0; width: 100%; height: 100%; transform-origin: center; will-change: transform; }
/* 开场纯黑遮罩：默认全黑覆盖（opacity 1），JS 随滚动进度淡出到 0，实现黑底开场、滚动出产品。
   置于 canvas 上方、hero-shade 下方，pointer-events 不拦截交互。 */
.hero-opening { position: absolute; inset: 0; background: #000; opacity: 1; pointer-events: none; z-index: 1;
                transition: opacity .3s linear; }
.hero-shade { position: absolute; inset: 0; pointer-events: none;
              background: linear-gradient(102deg, rgba(7,7,7,.92) 20%, rgba(7,7,7,.45) 55%, rgba(7,7,7,.1) 100%); }
.hero-vignette { position: absolute; inset: 0; pointer-events: none;
                 background: radial-gradient(120% 90% at 50% 50%, transparent 55%, rgba(0,0,0,.5) 100%); }

/* 末尾渐隐遮罩：覆盖在 canvas 上方（z-index 在 .hero-content 之下，避免遮挡文案/按钮），
   底部 32% 区域从透明渐变到 --bg，与 #products 背景无缝衔接。
   配合 JS 里 onProgress 的 opacity 控制，最后一帧接近 progress=1 时整层渐显，
   sticky 容器脱离时视觉上画面已融入页面底色，不再"硬跳"。 */
.hero-fadeout { position: absolute; inset: 0; z-index: 1; pointer-events: none; opacity: 0;
                background: linear-gradient(180deg, transparent 0%, transparent 40%, var(--bg) 100%);
                will-change: opacity; }
/* 底部柔光过渡带：恒显的 18% 底部渐隐，让 canvas 最后一帧的底边预先柔化，
   与 #products 顶部的 .band-fadein 形成连续的"暗 -> 暗"衔接，避免 1px border 的硬切感 */
.hero-bottomfade { position: absolute; left: 0; right: 0; bottom: 0; height: 18vh; z-index: 1;
                   pointer-events: none;
                   background: linear-gradient(180deg, transparent 0%, rgba(10,10,10,.55) 60%, var(--bg) 100%); }

.hero-content { position: absolute; inset: 0; z-index: 2; display: flex; align-items: center; pointer-events: none; }
.hero-content a { pointer-events: auto; }
.hero-text { max-width: 560px; will-change: transform, opacity; }
.hero-tag { color: var(--gold); font-size: 12px; letter-spacing: 5px; margin-bottom: 24px; opacity: 0;
            animation: fadeIn .9s ease .3s forwards; }
.hero-tag::before { content: ""; display: inline-block; width: 40px; height: 1px; background: var(--gold);
                    vertical-align: middle; margin-right: 14px; }
@keyframes fadeIn { to { opacity: 1; } }
.hero h1 { font-family: var(--serif); font-size: clamp(36px, 5vw, 60px); font-weight: 500; line-height: 1.22; letter-spacing: .5px; }
.reveal-line { display: block; overflow: hidden; }
.reveal-line > span { display: inline-block; transform: translateY(112%); animation: lineUp 1.2s var(--ease-soft) forwards; }
@keyframes lineUp { to { transform: translateY(0); } }
.hero h1 .reveal-line:nth-child(1) > span { animation-delay: .5s; }
.hero h1 .reveal-line:nth-child(2) > span { animation-delay: .68s; }
.hero-copy { margin-top: 24px; color: var(--muted); opacity: 0; animation: fadeUp 1s var(--ease-soft) .9s forwards; }
.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 42px; opacity: 0; animation: fadeUp 1s var(--ease-soft) 1.1s forwards; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(28px); } to { opacity: 1; transform: none; } }

/* 按钮 */
.btn { position: relative; overflow: hidden; display: inline-flex; align-items: center; justify-content: center;
       min-height: 50px; padding: 12px 34px; font-size: 13px; letter-spacing: 2px;
       transition: transform .25s var(--ease-out), box-shadow .35s, background .35s, border-color .35s, color .35s;
       will-change: transform; }
.btn-gold { background: linear-gradient(135deg, var(--gold), var(--gold-2)); color: #181205; font-weight: 600; }
.btn-gold::before { content: ""; position: absolute; top: 0; left: -80%; width: 55%; height: 100%;
                    background: linear-gradient(105deg, transparent, rgba(255,255,255,.5), transparent);
                    transform: skewX(-22deg); transition: left .65s ease; }
.btn-gold:hover { box-shadow: 0 14px 34px rgba(200,162,78,.4); }
.btn-gold:hover::before { left: 125%; }
.btn-line { border: 1px solid var(--gold-dim); color: var(--gold); }
.btn-line::before { content: ""; position: absolute; inset: 0; background: rgba(200,162,78,.12);
                    transform: scaleX(0); transform-origin: left; transition: transform .45s var(--ease-out); }
.btn-line:hover { border-color: var(--gold); }
.btn-line:hover::before { transform: scaleX(1); }
.btn-line span, .btn-gold span { position: relative; z-index: 1; }

/* 首屏文案切换 + 进度 */
.hero-caption { position: absolute; left: 0; right: 0; bottom: 82px; z-index: 2; text-align: center; pointer-events: none; }
.cap { position: absolute; left: 0; right: 0; bottom: 0; opacity: 0; transform: translateY(18px);
       transition: opacity .7s var(--ease-soft), transform .7s var(--ease-soft); }
.cap.on { opacity: 1; transform: none; }
.cap b { display: block; font-family: var(--serif); font-size: 22px; font-weight: 500; letter-spacing: 2px; }
.cap span { font-size: 11px; color: var(--muted); letter-spacing: 4px; }

/* 首屏中段滚动标语（随进度依次浮现 / 隐去）
   - 独立于 heroText（大标题）与 heroCaption（底部小字幕），位于画面中部居右一点，
     避免和左侧大标题冲突；进度由 JS 控制 opacity / translateY。
   - 视觉：居中大号衬线 + 上下金线点缀，与黑金基调一致。 */
.hero-flash { position: absolute; inset: 0; z-index: 2; pointer-events: none;
              display: flex; align-items: center; justify-content: center; }
.flash { position: absolute; left: 50%; top: 50%; transform: translate(-50%, calc(-50% + 26px));
         width: min(880px, calc(100% - 48px)); text-align: center;
         opacity: 0; will-change: opacity, transform;
         transition: opacity .55s var(--ease-soft), transform .55s var(--ease-soft); }
.flash.on { opacity: 1; transform: translate(-50%, -50%); }
.flash .f-line { display: block; width: 64px; height: 1px; margin: 0 auto 18px;
                 background: linear-gradient(90deg, transparent, var(--gold), transparent); }
.flash .f-text { font-family: var(--serif); font-weight: 500;
                 font-size: clamp(22px, 3.2vw, 38px); line-height: 1.4; letter-spacing: 2px;
                 color: var(--text);
                 text-shadow: 0 2px 22px rgba(0,0,0,.55); }
.flash .f-text .gold { color: var(--gold-2); }
.flash .f-sub { margin-top: 14px; font-size: 11px; letter-spacing: 5px; color: var(--gold);
                text-transform: uppercase; }
.hero-bottom { position: absolute; left: 50%; bottom: 34px; transform: translateX(-50%); z-index: 2;
               display: flex; align-items: center; gap: 18px; color: var(--muted); font-size: 10px; letter-spacing: 3px; }
.cap-dots { display: flex; gap: 8px; }
.cap-dots i { width: 5px; height: 5px; border-radius: 50%; background: #3a3a3a; transition: .45s; }
.cap-dots i.on { background: var(--gold); box-shadow: 0 0 10px rgba(200,162,78,.9); transform: scale(1.3); }
.hero-progress { display: flex; align-items: center; gap: 14px; }
.hero-progress .track { width: 180px; height: 1px; background: rgba(200,162,78,.2); overflow: hidden; }
.hero-progress .track i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--gold), var(--gold-2)); }

/* ---------- 通用区块 ---------- */
section { scroll-margin-top: 72px; }
.band { padding-block: 84px; border-bottom: 1px solid var(--line); position: relative; }
.band.alt { background: var(--bg-soft); }

/* 首屏 -> 产品区 衔接优化：
   1) 让 #products 向上重叠 hero 末尾 12vh，使 sticky 还没完全脱离时产品区已经开始进入，
      从"串联切换"变为"叠加过渡"，消除位置突变。
   2) #products 顶部加一层 18vh 的渐显遮罩（从 --bg 渐变到透明），与 hero 末尾的
      .hero-bottomfade / .hero-fadeout 呼应，形成连续的暗色调过渡带。
   3) 由于 .band 自带 border-bottom，对 #products 顶部我们没有再加 border，
      原 border-bottom 保留在底部（和 #gallery 分界），不受影响。 */
#products { margin-top: -12vh; padding-top: calc(84px + 12vh); position: relative; z-index: 3; }
#products::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 18vh;
                    pointer-events: none; z-index: 0;
                    background: linear-gradient(180deg, var(--bg) 0%, rgba(10,10,10,.55) 40%, transparent 100%); }
#products > .wrap { position: relative; z-index: 1; }
.sec-head { margin-bottom: 44px; }
.sec-head .num { display: flex; align-items: center; gap: 14px; font-size: 11px; color: var(--gold); letter-spacing: 4px; margin-bottom: 14px; }
.sec-head .num::after { content: ""; width: 46px; height: 1px; background: rgba(200,162,78,.4); }
.sec-head h2 { font-family: var(--serif); font-size: 30px; font-weight: 500; letter-spacing: 1px; }
.sec-head h2 .en { font-family: var(--sans); font-size: 12px; color: var(--muted); font-weight: 400; letter-spacing: 3px; margin-left: 16px; }

/* 滚动显现 */
.no-js .sr, .no-js .sr-wipe { opacity: 1 !important; transform: none !important; clip-path: none !important; }
.no-js .shot img, .no-js .factory-img img { opacity: 1 !important; transform: none !important; }
.sr { opacity: 0; transform: translateY(36px); transition: opacity 1s var(--ease-soft), transform 1s var(--ease-soft); }
.sr.in { opacity: 1; transform: none; }
.sr-d1 { transition-delay: .1s; } .sr-d2 { transition-delay: .2s; }
.sr-d3 { transition-delay: .3s; } .sr-d4 { transition-delay: .4s; }
.sr-wipe { clip-path: inset(0 100% 0 0); opacity: 1 !important; transform: none !important;
           transition: clip-path 1.1s var(--ease-soft); }
.sr-wipe.in { clip-path: inset(0 0 0 0); }

/* ---------- 产品卡片 ---------- */
.products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.card { position: relative; background: var(--bg-card); border: 1px solid var(--line-2); display: block;
        transition: transform .5s var(--ease-soft), border-color .5s, box-shadow .5s; }
.card::before { content: ""; position: absolute; inset: -1px; border: 1px solid transparent;
                background: linear-gradient(135deg, rgba(200,162,78,.55), rgba(200,162,78,.05) 45%, rgba(200,162,78,.4)) border-box;
                -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
                -webkit-mask-composite: xor; mask-composite: exclude;
                opacity: 0; transition: opacity .5s; pointer-events: none; }
.card:hover { transform: translateY(-8px); box-shadow: 0 24px 44px rgba(0,0,0,.55); }
.card:hover::before { opacity: 1; }
.card-img { position: relative; aspect-ratio: 4/3; overflow: hidden; background: #101010; border-bottom: 1px solid var(--line-2); }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease-soft), filter .5s;
                filter: saturate(.92) brightness(.95); }
.card:hover .card-img img { transform: scale(1.07); filter: saturate(1.05) brightness(1.02); }
.card-tag { position: absolute; top: 12px; left: 12px; z-index: 2; font-size: 10px; letter-spacing: 2px; color: var(--gold);
            border: 1px solid rgba(200,162,78,.45); padding: 3px 9px; background: rgba(10,10,10,.65); backdrop-filter: blur(4px); }
.card-body { padding: 18px 20px 20px; }
.card-body h3 { font-family: var(--serif); font-size: 18px; font-weight: 500; letter-spacing: 1px; }
.card-body p { font-size: 12px; color: var(--muted); margin-top: 7px; }
.card-body .more { display: inline-block; margin-top: 14px; font-size: 12px; letter-spacing: 1px; color: var(--gold); transition: transform .35s; }
.card:hover .more { transform: translateX(6px); }

/* ---------- 实拍画廊 ---------- */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.shot { position: relative; aspect-ratio: 16/9; overflow: hidden; border: 1px solid var(--line-2); background: #101010; }
.shot img { width: 100%; height: 100%; object-fit: cover; opacity: 1; transform: scale(1);
            transition: opacity 1.1s var(--ease-soft), transform 1.4s var(--ease-soft), filter .5s; }
.shot:nth-child(1) img { transition-delay: .02s; } .shot:nth-child(2) img { transition-delay: .1s; }
.shot:nth-child(3) img { transition-delay: .18s; } .shot:nth-child(4) img { transition-delay: .26s; }
.shot:nth-child(5) img { transition-delay: .34s; } .shot:nth-child(6) img { transition-delay: .42s; }
.js .shot:not(.in) img { opacity: 0; transform: scale(1.08); }
.shot.in img { opacity: 1; transform: scale(1); }
.shot.in:hover img { transform: scale(1.05); transition-delay: 0s; }
.shot::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(200,162,78,0); transition: border-color .45s; pointer-events: none; }
.shot:hover::after { border-color: rgba(200,162,78,.55); }
.shot .cap-tag { position: absolute; left: 12px; bottom: 10px; font-size: 10px; letter-spacing: 2px;
                 color: var(--gold-2); background: rgba(10,10,10,.7); padding: 3px 9px; backdrop-filter: blur(4px); }

/* ---------- 生产线实拍（竖屏滚动播放） ---------- */
.proc { position: relative; height: 320vh; background: #070707; border-bottom: 1px solid var(--line); }
.proc-sticky { position: sticky; top: 0; height: 100vh; min-height: 620px; display: flex; align-items: center; overflow: hidden; }
.proc-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 64px; align-items: center; width: 100%; }
.proc-canvas-box { position: relative; display: grid; place-items: center; }
.proc-canvas-frame { position: relative; width: min(340px, 78vw); aspect-ratio: 9/16; }
#procCanvas { width: 100%; height: 100%; background: #000; display: block;
              border: 1px solid rgba(200,162,78,.35); box-shadow: 0 34px 80px rgba(0,0,0,.7); }
.proc-frame-ring { position: absolute; inset: -16px; border: 1px dashed rgba(200,162,78,.28); pointer-events: none; }
.proc-badge { position: absolute; top: -15px; left: 50%; transform: translateX(-50%); white-space: nowrap;
              font-size: 10px; letter-spacing: 3px; color: var(--gold); background: var(--bg);
              border: 1px solid rgba(200,162,78,.45); padding: 5px 13px; }
.proc-steps { display: flex; flex-direction: column; gap: 26px; }
.proc-tag { color: var(--gold); font-size: 11px; letter-spacing: 5px; margin-bottom: 4px; }
.proc-step { position: relative; opacity: .22; padding-left: 24px; transition: opacity .5s, transform .5s var(--ease-soft); }
.proc-step::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 1px; background: #2c2c2c; }
.proc-step::after { content: ""; position: absolute; left: 0; top: 4px; width: 1px; height: 0; background: linear-gradient(180deg, var(--gold), var(--gold-2)); transition: height .6s var(--ease-soft); }
.proc-step.on { opacity: 1; transform: translateX(6px); }
.proc-step.on::after { height: calc(100% - 8px); }
.proc-step .n { font-size: 11px; color: var(--gold); letter-spacing: 3px; }
.proc-step h3 { font-family: var(--serif); font-size: 23px; font-weight: 500; margin: 6px 0 5px; letter-spacing: 1px; }
.proc-step p { color: var(--muted); font-size: 13px; max-width: 420px; }
.proc-progress { margin-top: 10px; width: 200px; height: 1px; background: #2c2c2c; }
.proc-progress i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--gold), var(--gold-2)); }
.proc-note { font-size: 11px; color: #5a5a5a; letter-spacing: 1px; line-height: 1.9; max-width: 420px; }

/* ---------- 制造能力 ---------- */
.factory { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.factory-img { aspect-ratio: 16/10; overflow: hidden; border: 1px solid var(--line-2); position: relative; }
.factory-img img { width: 100%; height: 100%; object-fit: cover; opacity: 0; transform: scale(1.05);
                   transition: opacity 1.1s var(--ease-soft), transform 1.4s var(--ease-soft); }
.factory-img.in img { opacity: 1; transform: scale(1); }
.factory p { color: var(--muted); margin-bottom: 14px; }
.cap-list { margin-top: 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.cap-item { display: flex; gap: 12px; align-items: baseline; font-size: 13px; }
.cap-item::before { content: ""; width: 6px; height: 6px; flex: none; background: var(--gold);
                    transform: translateY(-1px) rotate(45deg); }

/* ---------- 为什么选择我们 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.why-card { position: relative; background: var(--bg-card); border: 1px solid var(--line-2);
            padding: 30px 28px 28px; display: flex; flex-direction: column; gap: 12px;
            transition: transform .5s var(--ease-soft), border-color .5s, box-shadow .5s; }
.why-card::before { content: ""; position: absolute; inset: -1px; border: 1px solid transparent;
                    background: linear-gradient(135deg, rgba(200,162,78,.55), rgba(200,162,78,.05) 45%, rgba(200,162,78,.4)) border-box;
                    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
                    -webkit-mask-composite: xor; mask-composite: exclude;
                    opacity: 0; transition: opacity .5s; pointer-events: none; }
.why-card:hover { transform: translateY(-6px); box-shadow: 0 18px 38px rgba(0,0,0,.5); }
.why-card:hover::before { opacity: 1; }
.why-icon { width: 44px; height: 44px; display: grid; place-items: center; flex: none;
            border: 1px solid rgba(200,162,78,.45); color: var(--gold);
            font-size: 20px; line-height: 1;
            background: linear-gradient(135deg, rgba(200,162,78,.08), rgba(200,162,78,.02));
            transition: border-color .4s, color .4s, transform .5s var(--ease-soft); }
.why-card:hover .why-icon { border-color: var(--gold); color: var(--gold-2); transform: rotate(6deg) scale(1.05); }
.why-card h3 { font-family: var(--serif); font-size: 17px; font-weight: 500; letter-spacing: 1px; color: var(--text); }
.why-card p { font-size: 13px; color: var(--muted); line-height: 1.7; }

/* ---------- 产品亮点轮播 ---------- */
.highlight-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.hl-card { position: relative; background: var(--bg-card); border: 1px solid var(--line-2);
           display: flex; flex-direction: column; overflow: hidden;
           transition: transform .5s var(--ease-soft), border-color .5s, box-shadow .5s; }
.hl-card::before { content: ""; position: absolute; inset: -1px; border: 1px solid transparent;
                   background: linear-gradient(135deg, rgba(200,162,78,.55), rgba(200,162,78,.05) 45%, rgba(200,162,78,.4)) border-box;
                   -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
                   -webkit-mask-composite: xor; mask-composite: exclude;
                   opacity: 0; transition: opacity .5s; pointer-events: none; }
.hl-card:hover { transform: translateY(-8px); box-shadow: 0 22px 42px rgba(0,0,0,.55); }
.hl-card:hover::before { opacity: 1; }
.hl-img { position: relative; aspect-ratio: 4/3; overflow: hidden; background: #101010; border-bottom: 1px solid var(--line-2); }
.hl-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease-soft), filter .5s;
              filter: saturate(.92) brightness(.95); }
.hl-card:hover .hl-img img { transform: scale(1.07); filter: saturate(1.05) brightness(1.02); }
.hl-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 8px; }
.hl-body h3 { font-family: var(--serif); font-size: 17px; font-weight: 500; letter-spacing: 1px; }
.hl-model { font-size: 11px; letter-spacing: 2px; color: var(--gold); text-transform: uppercase; }
.hl-specs { list-style: none; display: flex; flex-wrap: wrap; gap: 6px 12px; margin-top: 4px; }
.hl-specs li { font-size: 12px; color: var(--muted); letter-spacing: .5px; position: relative; padding-left: 14px; }
.hl-specs li::before { content: ""; position: absolute; left: 0; top: 7px; width: 6px; height: 6px;
                       background: var(--gold); transform: rotate(45deg); }
.hl-more { display: inline-block; margin-top: 10px; font-size: 12px; letter-spacing: 1px; color: var(--gold);
           transition: transform .35s; }
.hl-card:hover .hl-more { transform: translateX(6px); }

/* ---------- 信任要素 ---------- */
.trust-label { margin: 40px 0 16px; font-size: 12px; letter-spacing: 3px; color: var(--gold); text-transform: uppercase; }
.trust-label::before { content: ""; display: inline-block; width: 26px; height: 1px; background: rgba(200,162,78,.5); vertical-align: middle; margin-right: 12px; }
.trust-certs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; max-width: 900px; }
.trust-certs figure { margin: 0; background: #fff; border: 1px solid var(--line-2); padding: 8px; text-align: center;
                      transition: transform .4s var(--ease-soft), box-shadow .4s; }
.trust-certs figure:hover { transform: translateY(-5px); box-shadow: 0 16px 30px rgba(0,0,0,.5); }
.trust-certs img { width: 100%; aspect-ratio: 3/4; object-fit: contain; }
.trust-certs figcaption { margin-top: 7px; font-size: 10px; letter-spacing: 1px; color: #333; font-weight: 600; }
.trust-cases, .trust-equips { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.trust-cases figure, .trust-equips figure { margin: 0; position: relative; border: 1px solid var(--line-2); overflow: hidden; background: #101010; }
.trust-cases img, .trust-equips img { width: 100%; aspect-ratio: 16/10; object-fit: cover; transition: transform .7s var(--ease-soft), filter .5s; filter: saturate(.92) brightness(.95); }
.trust-cases figure:hover img, .trust-equips figure:hover img { transform: scale(1.05); filter: saturate(1.05) brightness(1.02); }
.trust-cases figcaption, .trust-equips figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 12px 14px; font-size: 12px; letter-spacing: .5px; color: #eee;
                        background: linear-gradient(to top, rgba(8,8,8,.88), transparent); }

/* ---------- 资料下载 ---------- */
.res-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.res-item { display: flex; align-items: center; gap: 16px; padding: 22px 24px; background: var(--bg-card);
            border: 1px solid var(--line-2); transition: transform .45s var(--ease-soft), border-color .45s; }
.res-item:hover { border-color: rgba(200,162,78,.6); transform: translateY(-5px); }
.res-item .icon { width: 44px; height: 44px; flex: none; display: grid; place-items: center;
                  border: 1px solid var(--gold); color: var(--gold); font-size: 11px; letter-spacing: 1px; }
.res-item h3 { font-size: 15px; font-weight: 600; }
.res-item small { color: var(--muted); font-size: 12px; }
.res-item .dl { margin-left: auto; color: var(--gold); font-size: 13px; }

/* ---------- 询价 ---------- */
.inquiry-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; }
.inquiry-info p { color: var(--muted); margin-bottom: 22px; }
.contact-line { display: flex; gap: 14px; margin-bottom: 18px; font-size: 14px; align-items: baseline; }
.contact-line b { color: var(--gold); font-weight: 600; width: 96px; flex: none; letter-spacing: 1px; }
.badge-priority { font-size: 10px; letter-spacing: 1px; color: #181205; background: linear-gradient(135deg, var(--gold), var(--gold-2));
                  padding: 2px 8px; margin-left: 10px; border-radius: 2px; }
form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 11px; color: var(--muted); letter-spacing: 2px; }
.field input, .field textarea { background: #0c0c0c; border: 1px solid var(--line-2); color: var(--text);
                                padding: 12px 15px; font-size: 14px; font-family: inherit; transition: .3s; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(200,162,78,.12); }
.field textarea { min-height: 120px; resize: vertical; }
form .btn-gold { grid-column: 1 / -1; justify-self: start; border: 0; cursor: pointer; font-family: inherit; }

/* ---------- 页脚 ---------- */
footer { padding-block: 38px; font-size: 13px; color: var(--muted); }
.footer-inner { display: flex; flex-wrap: wrap; gap: 14px 44px; justify-content: space-between; align-items: center; }

/* ============================================================
   产品详情页
   ============================================================ */
.crumb { padding: 104px 0 0; font-size: 12px; color: var(--muted); letter-spacing: 1px; }
.crumb a { color: var(--gold); }
.p-hero { padding: 34px 0 70px; border-bottom: 1px solid var(--line); }
.p-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.p-tag { color: var(--gold); font-size: 11px; letter-spacing: 5px; margin-bottom: 18px; }
.p-hero h1 { font-family: var(--serif); font-size: clamp(30px, 4vw, 46px); font-weight: 500; line-height: 1.25; }
.p-hero .p-sub { margin-top: 16px; color: var(--gold-2); font-size: 15px; letter-spacing: 1px; }
.p-hero .p-intro { margin-top: 20px; color: var(--muted); max-width: 520px; }
.p-hero .actions { margin-top: 34px; opacity: 1; animation: none; }

/* 结构图 */
.struct-box { position: relative; display: grid; grid-template-columns: minmax(0,1fr) 170px; gap: 22px; align-items: center;
              background: var(--bg-card); border: 1px solid var(--line-2); padding: 30px; }
.struct-svg { width: 100%; aspect-ratio: 1; max-width: 380px; margin-inline: auto; }
.struct-svg .dash-ring { animation: spinSlow 48s linear infinite; transform-box: fill-box; transform-origin: center; }
@keyframes spinSlow { to { transform: rotate(360deg); } }
.struct-svg .ex { transform-box: fill-box; transform-origin: center; transition: filter .45s, transform .5s var(--ease-soft); }
.struct-svg .ex.lit { filter: drop-shadow(0 0 14px rgba(227,198,127,.9)); transform: scale(1.02); }
/* 实拍结构图 */
.struct-photo { position: relative; width: 100%; aspect-ratio: 1; max-width: 380px; margin-inline: auto; }
.struct-photo img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; display: block;
                    border: 1px solid rgba(200,162,78,.35); box-shadow: 0 24px 60px rgba(0,0,0,.55);
                    transition: box-shadow .5s, filter .5s; }
.struct-photo::before { content: ""; position: absolute; inset: -14px; border-radius: 50%; pointer-events: none;
                       border: 1px dashed rgba(200,162,78,.4); animation: spinSlow 48s linear infinite; }
.struct-photo .sweep { position: absolute; inset: 0; border-radius: 50%; pointer-events: none; mix-blend-mode: screen;
                       background: conic-gradient(from 0deg, transparent 0deg, rgba(227,198,127,.30) 36deg, transparent 90deg);
                       animation: spinSlow 9s linear infinite; }
.struct-photo.lit img { box-shadow: 0 0 0 1px rgba(227,198,127,.8), 0 24px 60px rgba(0,0,0,.55), 0 0 34px rgba(227,198,127,.35);
                        filter: brightness(1.08); }
.layer-list { display: flex; flex-direction: column; gap: 10px; }
.layer-item { display: flex; align-items: center; gap: 12px; padding: 10px 13px; cursor: default;
              border: 1px solid var(--line-2); background: rgba(18,18,18,.8); transition: .4s; }
.layer-item .dot { width: 10px; height: 10px; flex: none; border-radius: 50%; background: var(--c, #888); transition: box-shadow .4s; }
.layer-item h4 { font-size: 13px; font-weight: 600; letter-spacing: 1px; }
.layer-item small { display: block; font-size: 11px; color: var(--muted); }
.layer-item.on { border-color: rgba(200,162,78,.65); background: rgba(200,162,78,.07); }
.layer-item.on .dot { box-shadow: 0 0 10px var(--gold); }

/* 参数表 */
.spec-wrap { padding-block: 70px; border-bottom: 1px solid var(--line);
             overflow-x: auto; -webkit-overflow-scrolling: touch; }
.detail-spec { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.spec-table { width: 100%; min-width: 600px; border-collapse: collapse; margin-top: 8px; }
.spec-table th, .spec-table td { text-align: left; padding: 15px 18px; border-bottom: 1px solid var(--line-2); font-size: 14px; vertical-align: top; }
.spec-table th { width: 240px; color: var(--gold); font-weight: 600; letter-spacing: 1px; font-size: 13px; }
.spec-table tr { transition: background .3s; }
.spec-table tbody tr:hover { background: rgba(200,162,78,.04); }
.spec-note { margin-top: 16px; font-size: 12px; color: var(--muted); letter-spacing: 1px; }
.spec-note::before { content: "* "; color: var(--gold); }

/* 详情页实拍 */
.p-gallery { padding-block: 70px; border-bottom: 1px solid var(--line); }
.p-gallery-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px; }
.p-gallery-grid .shot:first-child { aspect-ratio: 16/9; }
.p-gallery-grid.multi { grid-template-columns: repeat(3, 1fr); }
.p-gallery-grid.multi .shot:first-child { aspect-ratio: 16/9; grid-column: span 2; }
.p-gallery-grid.multi .shot { aspect-ratio: 4/3; }

/* 规格变体切换 */
.var-count { margin: 22px 0 2px; font-size: 12px; letter-spacing: 2px; color: var(--gold); text-transform: uppercase; }
.var-count::before { content: ""; display: inline-block; width: 22px; height: 1px; background: rgba(200,162,78,.5); vertical-align: middle; margin-right: 10px; }
.var-tabs { display: flex; flex-wrap: wrap; gap: 12px; margin: 12px 0 6px; }
.var-tab { appearance: none; border: 1px solid var(--line-2); background: rgba(18,18,18,.8); color: var(--muted);
           padding: 12px 22px; font-size: 14px; letter-spacing: 1px; cursor: pointer; transition: .35s; border-radius: 2px; }
.var-tab:hover { border-color: rgba(200,162,78,.5); color: var(--gold-2, #e3c67f); transform: translateY(-2px); }
.var-tab.on { border-color: rgba(200,162,78,.75); color: #0d0d0d; background: linear-gradient(135deg, #c8a24e, #e3c67f); font-weight: 600; box-shadow: 0 8px 20px rgba(200,162,78,.25); }
.var-panel { display: none; }
.var-panel.show { display: block; animation: varFade .45s ease both; }
@keyframes varFade { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.var-note { margin-top: 14px; font-size: 12px; color: var(--muted); letter-spacing: .5px; }
.var-note b { color: var(--gold); font-weight: 600; }

/* 结构区：实拍大图 + 文字说明（替代假截面联动） */
.struct-simple { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.struct-simple .shot { aspect-ratio: 1/1; }
.struct-simple .shot img { opacity: 1; transform: none; }
.struct-points { display: flex; flex-direction: column; gap: 14px; }
.struct-point { border: 1px solid var(--line-2); background: rgba(18,18,18,.6); padding: 16px 18px; transition: .35s; }
.struct-point:hover { border-color: rgba(200,162,78,.5); }
.struct-point h4 { font-size: 14px; font-weight: 600; letter-spacing: 1px; color: var(--gold-2); margin-bottom: 5px; }
.struct-point p { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* 相关产品 */
.related { padding-block: 70px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .products { grid-template-columns: repeat(2, 1fr); }
  .gallery, .res-list { grid-template-columns: 1fr 1fr; }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .highlight-strip { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .proc-grid { grid-template-columns: 1fr; gap: 34px; }
  .proc-canvas-frame { width: min(280px, 72vw); }
  .proc-steps { gap: 16px; }
  .proc-step p { display: none; }
  .p-hero-grid, .factory, .inquiry-grid, .p-gallery-grid { grid-template-columns: 1fr; }
  .p-gallery-grid.multi { grid-template-columns: repeat(2, 1fr); }
  .p-gallery-grid.multi .shot:first-child { grid-column: span 2; }
  .struct-box, .struct-simple { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .hero { height: 240vh; }
  .header-inner { height: auto; padding-block: 12px; flex-wrap: wrap; gap: 10px; }
  .band { padding-block: 60px; }
  /* 移动端同步：保持 #products 与 hero 末尾的重叠过渡（按 760px 断点缩小重叠量） */
  #products { margin-top: -10vh; padding-top: calc(60px + 10vh); }
  #products::before { height: 14vh; }
  .products, .gallery, .res-list, .related-grid { grid-template-columns: 1fr; }
  .why-grid, .highlight-strip { grid-template-columns: 1fr; }
  .trust-certs { grid-template-columns: repeat(2, 1fr); }
  .trust-cases, .trust-equips { grid-template-columns: 1fr; }
  form { grid-template-columns: 1fr; }
  .cap-list { grid-template-columns: 1fr; }
  .hero-progress .track { width: 110px; }
  .spec-table th { width: 130px; }
  .p-gallery-grid.multi { grid-template-columns: 1fr; }
  .p-gallery-grid.multi .shot:first-child { grid-column: auto; }
  .p-gallery-grid.multi .shot { aspect-ratio: 16/9; }
}

/* 动效降级 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .sr, .sr-wipe, .hero-copy, .actions, .hero-tag { opacity: 1 !important; transform: none !important; clip-path: none !important; }
  .reveal-line > span { transform: none !important; }
  .shot img, .factory-img img { opacity: 1 !important; transform: none !important; }
}