/* 由 tools/styles 分片拼成，别直接改这个文件 */
/* ── 00 色板、字体、重置 ── 色值与对比度见 DESIGN.md，改这里先改那里 */
@font-face {
  font-family: "Archivo";
  font-style: normal;
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-display: swap;
  src: url(/assets/fonts/archivo-var-latin.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/assets/fonts/plexmono-400-latin.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/assets/fonts/plexmono-500-latin.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --navy: #0E2A5A;
  --navy-2: #1A3C78;
  --ink: #111418;
  --graphite: #1C2026;
  --night: #0C0E11;
  --sub: #4A5360;
  --steel: #8A939E;
  --mist: #C9D1DC;
  --mill: #ECEEF1;
  --soft: #F5F6F7;
  --line: #D8DCE1;
  --white: #FFFFFF;
  --ok: #1E6B3A;
  --bad: #A32020;

  --f-sans: "Archivo", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --f-zh: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;

  --gutter: 20px;
  --maxw: 1240px;
  --header-h: 64px;
  --radius: 2px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--f-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  font-stretch: 100%;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
html[lang="zh-hans"] body { font-family: "Archivo", var(--f-zh); }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }
:focus-visible { outline: 2px solid var(--navy); outline-offset: 3px; }

@media (min-width: 720px) { :root { --gutter: 32px; --header-h: 72px; } }

/* ── 10 版式基础：容器、字级、按钮、标签 ── */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }

h1, h2, h3 { font-weight: 600; letter-spacing: -0.015em; text-wrap: balance; }
h1 { font-size: clamp(2.35rem, 8.4vw, 5rem); line-height: 1; font-stretch: 116%; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.6rem, 4.2vw, 2.6rem); line-height: 1.08; font-stretch: 110%; }
h3 { font-size: 1.125rem; line-height: 1.3; font-stretch: 104%; }
html[lang="zh-hans"] :is(h1, h2, h3) { letter-spacing: 0; font-stretch: 100%; line-height: 1.2; }
html[lang="zh-hans"] h1 { font-size: clamp(2.1rem, 7.4vw, 4.2rem); }

.lead { font-size: clamp(1.0625rem, 1.9vw, 1.25rem); line-height: 1.55; color: var(--sub); max-width: 40em; }

/* 眉标：前面一道短切缝（logo 那两道切口的回声），后面是一行等宽小字 */
.eyebrow {
  display: flex; align-items: center; gap: .75rem;
  font-family: var(--f-mono); font-size: .75rem; font-weight: 500;
  letter-spacing: .12em; text-transform: uppercase; color: var(--sub);
  margin-bottom: 1rem;
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--navy); flex: none; }
html[lang="zh-hans"] .eyebrow { letter-spacing: .06em; font-family: var(--f-mono), var(--f-zh); }

.section { padding-block: clamp(64px, 10vw, 128px); }
.section h2 + * { margin-top: 1.25rem; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  min-height: 48px; padding: .75rem 1.35rem;
  border: 1px solid transparent; border-radius: var(--radius);
  font-weight: 600; font-size: 1rem; font-stretch: 106%; line-height: 1.2;
  text-decoration: none; cursor: pointer;
  transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.btn .ico { width: 18px; height: 18px; transition: transform .2s var(--ease); }
.btn:hover .ico { transform: translateX(3px); }
.btn-primary { background: var(--navy); color: var(--white); }
.btn-primary:hover { background: var(--navy-2); }
.btn-ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-ghost:hover { background: var(--ink); color: var(--white); }
.btn-light { background: var(--white); color: var(--ink); }
.btn-light:hover { background: var(--mill); }
.btn-sm { min-height: 40px; padding: .5rem 1rem; font-size: .9375rem; }
.btn:disabled { opacity: .6; cursor: progress; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }

.ico { width: 20px; height: 20px; flex: none; }
.link-arrow { display: inline-flex; align-items: center; gap: .5rem; font-weight: 600; color: var(--navy); text-decoration: none; border-bottom: 1px solid currentColor; padding-bottom: 2px; }
.link-arrow:hover .ico { transform: translateX(3px); }
.link-arrow .ico { transition: transform .2s var(--ease); }

.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: 1rem; }
.chips li {
  font-family: var(--f-mono); font-size: .8125rem; line-height: 1.2;
  padding: .35rem .6rem; border: 1px solid var(--line); border-radius: var(--radius);
  color: var(--ink); background: var(--white);
}
html[lang="zh-hans"] .chips li { font-family: var(--f-mono), var(--f-zh); }

.ticks li { position: relative; padding-left: 1.4rem; margin-top: .5rem; }
.ticks li::before { content: ""; position: absolute; left: 0; top: .78em; width: .8rem; height: 2px; background: var(--navy); }

/* 规格表：项目名灰、值用等宽字，像质保书 */
.spec { font-size: .975rem; }
.spec caption { text-align: left; font-weight: 600; padding-bottom: .5rem; }
.spec th, .spec td { text-align: left; vertical-align: top; padding: .8rem 0; border-bottom: 1px solid var(--line); }
.spec tbody tr:first-child :is(th, td) { border-top: 1px solid var(--ink); }
.spec thead th { font-family: var(--f-mono); font-size: .75rem; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--sub); border-bottom: 0; padding-bottom: .5rem; }
.spec tbody th { font-weight: 500; color: var(--sub); width: 38%; padding-right: 1rem; }
.spec td { font-family: var(--f-mono); font-size: .9rem; font-variant-numeric: tabular-nums; }
html[lang="zh-hans"] .spec td { font-family: var(--f-mono), var(--f-zh); }

/* ── 20 公共壳：跳转链接、审稿横幅、页头、询盘条、页脚、WhatsApp 浮钮 ── */
.skip { position: absolute; left: 8px; top: -60px; z-index: 100; background: var(--navy); color: var(--white); padding: .6rem 1rem; text-decoration: none; }
.skip:focus { top: 8px; }

.review-banner {
  background: var(--ink); color: var(--mist);
  font-size: .8125rem; line-height: 1.45; text-align: center;
  padding: .55rem var(--gutter);
}

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .94);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease);
}
.site-header.scrolled { border-bottom-color: var(--line); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: var(--header-h); flex-wrap: wrap; }
.brand img { height: 36px; width: auto; }

.menu-btn { display: none; }
.site-nav { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1.25rem; padding-bottom: .75rem; }
.site-nav ul { display: flex; flex-wrap: wrap; gap: .25rem 1.25rem; }
.site-nav ul a { text-decoration: none; font-weight: 500; font-size: .975rem; padding-block: .4rem; border-bottom: 2px solid transparent; }
.site-nav ul a:hover { border-bottom-color: var(--line); }
.site-nav ul a[aria-current="page"] { border-bottom-color: var(--navy); }
.lang { font-size: .875rem; text-decoration: none; color: var(--sub); padding: .3rem .55rem; border: 1px solid var(--line); border-radius: var(--radius); }
.lang:hover { color: var(--ink); border-color: var(--ink); }

/* 有 JS 的窄屏：菜单收进按钮 */
@media (max-width: 959.98px) {
  .js .menu-btn {
    display: inline-flex; align-items: center; gap: .6rem;
    min-height: 44px; padding: .4rem .2rem .4rem .6rem;
    background: none; border: 0; cursor: pointer; font-weight: 600; font-size: .9375rem;
  }
  .js .menu-bars { position: relative; width: 22px; height: 12px; border-block: 2px solid var(--ink); transition: transform .2s var(--ease); }
  .js.nav-open .menu-bars { border-color: var(--navy); transform: scaleY(.4); }
  .js .site-nav { display: none; }
  .js.nav-open .site-nav {
    display: flex; flex-direction: column; align-items: stretch; gap: 1rem;
    width: 100%; padding: .5rem 0 1.5rem; border-top: 1px solid var(--line);
  }
  .js.nav-open .site-nav ul { flex-direction: column; gap: 0; }
  .js.nav-open .site-nav ul a { display: block; padding: .85rem 0; font-size: 1.125rem; border-bottom: 1px solid var(--line); }
  .js.nav-open .site-nav ul a[aria-current="page"] { color: var(--navy); border-bottom-color: var(--line); box-shadow: inset 3px 0 0 var(--navy); padding-left: .75rem; }
  .js.nav-open .lang { align-self: flex-start; }
}
@media (min-width: 960px) {
  .header-row { flex-wrap: nowrap; }
  .brand img { height: 42px; }
  .site-nav { padding-bottom: 0; flex-wrap: nowrap; gap: 1.75rem; }
  .site-nav ul { gap: 1.75rem; }
}

.inquiry-band { background: var(--graphite); color: var(--white); padding-block: clamp(48px, 7vw, 80px); }
.band-row { display: grid; gap: 1.5rem; align-items: end; }
.inquiry-band h2 { font-size: clamp(1.5rem, 3.4vw, 2.25rem); }
.inquiry-band p { color: var(--mist); margin-top: .75rem; max-width: 40em; }
.inquiry-band :focus-visible { outline-color: var(--white); }
@media (min-width: 840px) { .band-row { grid-template-columns: 1fr auto; } }

.site-footer { background: var(--night); color: var(--mist); font-size: .9375rem; padding-top: clamp(48px, 7vw, 80px); }
.site-footer :focus-visible { outline-color: var(--white); }
.footer-grid { display: grid; gap: 2.25rem; grid-template-columns: 1fr 1fr; }
.footer-brand { grid-column: 1 / -1; }
.footer-brand img { height: 40px; width: auto; }
.footer-brand p { margin-top: 1.25rem; max-width: 30em; }
.site-footer h2 { font-family: var(--f-mono); font-size: .75rem; font-weight: 500; letter-spacing: .12em; text-transform: uppercase; color: var(--steel); margin-bottom: 1rem; }
html[lang="zh-hans"] .site-footer h2 { font-family: var(--f-zh); letter-spacing: .04em; }
.site-footer li + li { margin-top: .55rem; }
.site-footer a { color: var(--white); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; text-underline-offset: 3px; }
.site-footer .contact { grid-column: 1 / -1; }
.site-footer .contact .k { display: block; font-size: .8125rem; color: var(--steel); }
.site-footer .contact a { overflow-wrap: anywhere; }
.footer-grid > div:last-child { grid-column: 1 / -1; }
.footer-base { margin-top: clamp(40px, 6vw, 64px); padding-block: 1.5rem; margin-bottom: 0; border-top: 1px solid #2A2F37; font-size: .8125rem; color: var(--steel); }
@media (min-width: 840px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.3fr; gap: 2.5rem; }
  .footer-brand, .footer-grid > div:last-child { grid-column: auto; }
}

.wa-float {
  position: fixed; right: 16px; bottom: 16px; z-index: 40;
  background: #128C4A; color: var(--white); text-decoration: none; font-weight: 600;
  padding: .8rem 1.1rem; border-radius: 999px; box-shadow: 0 6px 20px rgba(0, 0, 0, .25);
}
@media (min-width: 960px) { .wa-float { display: none; } }

/* ── 30 首页：首屏 + 铝卷剖面图、产地大图、产品线、报价公式、按订单做、流程、港口、贸易商 ── */
.hero {
  position: relative;
  background:
    linear-gradient(180deg, rgba(236, 238, 241, .9), rgba(245, 246, 247, .96)),
    url(/assets/img/brushed-metal-1280.webp) center / cover;
  padding-block: clamp(40px, 7vw, 96px) clamp(48px, 7vw, 104px);
  border-bottom: 1px solid var(--line);
}
.hero-grid { display: grid; gap: 2.5rem; align-items: center; }
.hero h1 { margin-top: .25rem; max-width: 11ch; }
html[lang="zh-hans"] .hero h1 { max-width: 12em; }
.hero .lead { margin-top: 1.5rem; color: #3A424D; }
@media (min-width: 960px) {
  .hero-grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 3rem; }
}

/* 铝卷剖面图（工程图口吻：细线、虚线中心线、气球编号） */
.hero-figure { position: relative; }
.coil-drawing { width: 100%; height: auto; overflow: visible; }
.coil-drawing .axes line { stroke: var(--steel); stroke-width: .75; stroke-dasharray: 10 4 2 4; }
.coil-drawing .core { fill: rgba(255, 255, 255, .7); stroke: var(--ink); stroke-width: 1.1; }
.coil-drawing .lap { fill: none; stroke: #6F7884; stroke-width: .9; }
.coil-drawing .rim { fill: none; stroke: var(--ink); stroke-width: 1.8; }
.coil-drawing .slits line { stroke: var(--navy); stroke-width: 4; stroke-linecap: butt; }
.coil-drawing .side rect { fill: rgba(255, 255, 255, .75); stroke: var(--ink); stroke-width: 1.1; }
.coil-drawing .side rect.coat { fill: var(--navy); stroke: none; }
.coil-drawing .dim, .coil-drawing .tick { stroke: var(--ink); stroke-width: .9; }
.coil-drawing .balloon line { stroke: var(--ink); stroke-width: .8; }
.coil-drawing .balloon circle { fill: var(--white); stroke: var(--ink); stroke-width: 1.1; }
.coil-drawing .balloon text { font-family: var(--f-mono); font-size: 13px; font-weight: 500; text-anchor: middle; fill: var(--ink); }

.hero-figure figcaption { margin-top: 1rem; }
.hero-figure .cap { display: block; font-family: var(--f-mono); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--sub); padding-bottom: .6rem; border-bottom: 1px solid var(--ink); }
html[lang="zh-hans"] .hero-figure .cap { font-family: var(--f-zh); letter-spacing: .04em; }
.dims { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1.25rem; }
.dims div { padding: .7rem 0; border-bottom: 1px solid var(--line); }
.dims dt { display: flex; align-items: center; gap: .5rem; font-size: .8125rem; color: var(--sub); }
.dims dd { font-family: var(--f-mono); font-size: .9375rem; font-variant-numeric: tabular-nums; margin-top: .2rem; padding-left: 1.85rem; }
html[lang="zh-hans"] .dims dd { font-family: var(--f-mono), var(--f-zh); }
.ball { display: inline-grid; place-items: center; width: 1.35rem; height: 1.35rem; border: 1px solid var(--ink); border-radius: 50%; font-family: var(--f-mono); font-size: .6875rem; font-weight: 500; color: var(--ink); background: var(--white); flex: none; }

/* 大图横条：全部转黑白，跟站的黑白灰统一 */
.photo-band { position: relative; height: clamp(300px, 56vw, 640px); overflow: hidden; background: var(--graphite); }
.photo-band-short { height: clamp(220px, 38vw, 460px); }
.photo-band img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.06) brightness(.92); }
.photo-caption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 3.5rem var(--gutter) 1.25rem;
  background: linear-gradient(180deg, transparent, rgba(12, 14, 17, .82));
  color: var(--white); font-size: .975rem; line-height: 1.5;
}
.photo-caption .mono { display: block; font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--mist); margin-bottom: .35rem; }
html[lang="zh-hans"] .photo-caption .mono { font-family: var(--f-zh); letter-spacing: .04em; }
@media (min-width: 960px) {
  .photo-caption { left: auto; right: max(var(--gutter), calc((100vw - var(--maxw)) / 2 + var(--gutter))); bottom: 2rem; width: min(440px, 40vw); padding: 1.25rem 1.5rem; background: rgba(12, 14, 17, .78); }
}

/* 产品线：一行一个，像目录的条目 */
.line-list { margin-top: 2.5rem; border-top: 1px solid var(--ink); }
.line-list li { border-bottom: 1px solid var(--line); }
.line-row {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .25rem 1.25rem; align-items: center;
  padding: 1.5rem 0; text-decoration: none; position: relative;
  transition: background-color .25s var(--ease), padding .25s var(--ease);
}
.line-code { grid-column: 1 / -1; font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--sub); }
html[lang="zh-hans"] .line-code { font-family: var(--f-zh); letter-spacing: .04em; }
.line-main { display: block; min-width: 0; }
.line-name { display: block; font-size: clamp(1.3rem, 3vw, 1.85rem); font-weight: 600; font-stretch: 108%; line-height: 1.15; letter-spacing: -0.01em; }
html[lang="zh-hans"] .line-name { font-stretch: 100%; letter-spacing: 0; }
.line-short { display: block; color: var(--sub); margin-top: .35rem; max-width: 36em; }
.line-thumb { display: none; }
.line-go { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%; transition: background-color .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease); }
.line-row:hover .line-go { background: var(--navy); border-color: var(--navy); color: var(--white); }
.line-row-sm .line-name { font-size: 1.2rem; }
@media (min-width: 720px) {
  .line-row { grid-template-columns: 7rem minmax(0, 1fr) 200px auto; gap: 1.5rem; padding: 1.75rem 0; }
  .line-code { grid-column: auto; align-self: start; padding-top: .45rem; }
  .line-row-sm { grid-template-columns: 7rem minmax(0, 1fr) auto; }
  .line-thumb { display: block; aspect-ratio: 3 / 2; overflow: hidden; background: var(--mill); }
  .line-thumb img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1); transition: filter .35s var(--ease), transform .5s var(--ease); }
  .line-row:hover .line-thumb img { filter: none; transform: scale(1.04); }
  .line-row:hover { background: var(--soft); padding-inline: 1rem; }
}

/* 报价公式：深蓝底，三个词像算式一样排开 */
.price { background: var(--navy); color: var(--white); }
.price .eyebrow { color: var(--mist); }
.price .eyebrow::before { background: var(--mist); }
.eq { margin-top: 1.75rem; font-size: inherit; border-top: 1px solid rgba(201, 209, 220, .35); }
.eq-row { display: grid; grid-template-columns: 2.25rem minmax(0, 1fr); align-items: baseline; gap: .25rem .75rem; padding: 1.1rem 0; border-bottom: 1px solid rgba(201, 209, 220, .35); }
.eq-op { font-family: var(--f-mono); font-size: clamp(1.5rem, 3.6vw, 2.4rem); color: var(--steel); line-height: 1; }
.eq-name { font-size: clamp(2rem, 5.4vw, 3.75rem); font-weight: 600; font-stretch: 116%; line-height: 1; letter-spacing: -0.025em; }
html[lang="zh-hans"] .eq-name { font-stretch: 100%; letter-spacing: 0; }
.eq-note { grid-column: 2; font-size: .8125rem; color: var(--mist); letter-spacing: .04em; }
html[lang="zh-hans"] .eq-note { font-family: var(--f-zh); }
.t-total .eq-name { background: linear-gradient(100deg, #FFFFFF 0%, #DDE3EA 38%, #9AA5B2 52%, #F4F6F8 70%, #C9D1DC 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.price-text { margin-top: 2.25rem; max-width: 46em; color: #DCE2EA; font-size: 1.0625rem; }
.price :focus-visible { outline-color: var(--white); }
@media (min-width: 960px) {
  .price-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: 4rem; align-items: end; }
  .eq-row { grid-template-columns: 3.5rem minmax(0, 1fr); }
  .price-text { margin-top: 0; padding-bottom: 1.25rem; }
}

/* 左标题右清单的通用两栏 */
.split { display: grid; gap: 2rem; }
.split-head p { color: var(--sub); margin-top: 1rem; max-width: 30em; }
@media (min-width: 960px) {
  .split { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 4rem; align-items: start; }
  .split-head { position: sticky; top: calc(var(--header-h) + 32px); }
}
.spec-list { border-top: 1px solid var(--ink); }
.spec-row { display: grid; gap: .3rem; padding: 1.15rem 0; border-bottom: 1px solid var(--line); }
.spec-row dt { font-family: var(--f-mono); font-size: .75rem; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--navy); }
html[lang="zh-hans"] .spec-row dt { font-family: var(--f-zh); font-size: .875rem; letter-spacing: .04em; }
@media (min-width: 720px) { .spec-row { grid-template-columns: 11rem 1fr; gap: 1.5rem; } .spec-row dt { padding-top: .25rem; } }

.custom { background: var(--soft); }

/* 流程：真有先后顺序，所以编号 */
.steps { counter-reset: step; display: grid; gap: 0; margin-top: 2.5rem; border-top: 1px solid var(--ink); }
.steps li { counter-increment: step; position: relative; padding: 1.25rem 0 1.25rem 3.25rem; border-bottom: 1px solid var(--line); }
.steps li::before { content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 1.35rem; font-family: var(--f-mono); font-size: .8125rem; font-weight: 500; color: var(--navy); }
.steps h3 { font-size: 1.125rem; }
.steps p { color: var(--sub); margin-top: .35rem; font-size: .975rem; }
@media (min-width: 960px) {
  .steps { grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 0; }
  .steps li { padding: 2.75rem 1.5rem 0 0; border-bottom: 0; border-top: 1px solid var(--ink); }
  .steps li::before { top: 1rem; }
  .steps li::after { content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; border-radius: 50%; background: var(--navy); }
}

.split-media .media { aspect-ratio: 4 / 3; overflow: hidden; background: var(--mill); }
.split-media .media img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.05); }
html[lang="en"] .honest h2 { max-width: 14ch; }
@media (min-width: 960px) { .split-media { grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); align-items: center; } .split-media .split-head { position: static; } }

/* ── 40 内页：页头、面包屑、产品卡、产品详情、色板、关于、联系表单、隐私、404 ── */
.page-head {
  background:
    linear-gradient(180deg, rgba(236, 238, 241, .92), rgba(245, 246, 247, .97)),
    url(/assets/img/brushed-metal-1280.webp) center / cover;
  border-bottom: 1px solid var(--line);
  padding-block: clamp(40px, 7vw, 88px);
}
.page-head .lead { margin-top: 1.25rem; }
.crumbs ol { display: flex; flex-wrap: wrap; gap: .35rem; font-size: .8125rem; color: var(--sub); margin-bottom: 1.5rem; }
.crumbs li + li::before { content: "/"; margin-right: .35rem; color: var(--steel); }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

/* 产品总览：大卡片，图文左右交替 */
.pcards .wrap { display: grid; gap: clamp(48px, 7vw, 96px); }
.pcard { display: grid; gap: 1.5rem; }
.pcard-media { display: block; aspect-ratio: 4 / 3; overflow: hidden; background: var(--mill); }
.pcard-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.pcard:hover .pcard-media img { transform: scale(1.03); }
.pcard h2 a { text-decoration: none; }
.pcard h2 a:hover { color: var(--navy); }
.pcard-body > p:not(.eyebrow):not(.actions) { color: var(--sub); margin-top: .75rem; }
.pcard .spec { margin-top: 1.5rem; }
@media (min-width: 960px) {
  .pcard { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: 4rem; align-items: center; }
  .pcard:nth-child(even) .pcard-media { order: 2; }
}

/* 产品详情 */
.product-hero { background: var(--soft); border-bottom: 1px solid var(--line); }
.product-grid { display: grid; gap: 2rem; padding-block: clamp(32px, 6vw, 72px); }
.product-text h1 { font-size: clamp(2.1rem, 6.4vw, 4rem); }
.product-text .lead { margin-top: 1.25rem; }
.product-media { aspect-ratio: 4 / 3; overflow: hidden; background: var(--mill); }
.product-media img { width: 100%; height: 100%; object-fit: cover; }
@media (min-width: 960px) {
  .product-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 4rem; align-items: center; }
  .product-media { aspect-ratio: 5 / 6; }
}

.specs .spec { font-size: 1rem; }

/* 色板：素色平涂，拉丝带细纹，镜面是高反差渐变 */
.finishes { background: var(--soft); }
.fgroups { display: grid; gap: 2rem; margin-top: 2rem; }
.fgroup h3 { font-family: var(--f-mono); font-size: .75rem; font-weight: 500; letter-spacing: .12em; text-transform: uppercase; color: var(--sub); padding-bottom: .75rem; border-bottom: 1px solid var(--ink); margin-bottom: 1rem; }
html[lang="zh-hans"] .fgroup h3 { font-family: var(--f-zh); font-size: .9375rem; letter-spacing: .04em; color: var(--ink); }
.swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 1rem .75rem; }
.swatches li { font-size: .875rem; }
.sw { display: block; height: 64px; margin-bottom: .5rem; border: 1px solid rgba(17, 20, 24, .18); border-radius: var(--radius); }
.sw-solid.sw-black { background: #15171A; }
.sw-solid.sw-white { background: #F7F7F5; }
.sw-solid.sw-red { background: #B3261E; }
.sw-solid.sw-blue { background: #1F4E9A; }
.sw-solid.sw-brown { background: #5E3B24; }
.sw-solid.sw-darkgreen { background: #1F4A35; }
.sw-solid.sw-darkgrey { background: #474C53; }
.sw-solid.sw-matteblack { background: #26282B; }
.sw-solid:not(.sw-matteblack) { background-image: linear-gradient(160deg, rgba(255, 255, 255, .16), transparent 45%); }
.sw-brushed { background-image: repeating-linear-gradient(90deg, rgba(255, 255, 255, .22) 0 1px, transparent 1px 3px), repeating-linear-gradient(90deg, rgba(0, 0, 0, .07) 0 1px, transparent 1px 5px); }
.sw-brushed.sw-gold { background-color: #BF9B4F; }
.sw-brushed.sw-silver { background-color: #B9BEC4; }
.sw-brushed.sw-rosegold { background-color: #C08B7C; }
.sw-mirror.sw-gold { background: linear-gradient(125deg, #8C6A23 0%, #F6E3A8 30%, #B98E35 48%, #FFF3CE 66%, #9A7428 100%); }
.sw-mirror.sw-silver { background: linear-gradient(125deg, #7E848B 0%, #FFFFFF 30%, #9AA1A9 48%, #F4F6F8 66%, #8A9097 100%); }
.sw-mirror.sw-rosegold { background: linear-gradient(125deg, #8E5546 0%, #F7D3C6 30%, #B97864 48%, #FFE6DC 66%, #9C604F 100%); }
@media (min-width: 960px) { .fgroups { grid-template-columns: 2fr 1fr 1fr; gap: 3rem; } }

.grade-list { display: grid; gap: 1px; margin-top: 2rem; background: var(--line); border: 1px solid var(--line); }
.grade-list li { background: var(--white); padding: 1.75rem 1.5rem; }
.grade-list h3 { font-size: 1.25rem; }
.grade-list p { color: var(--sub); margin-top: .6rem; }
@media (min-width: 840px) { .grade-list { grid-template-columns: repeat(3, 1fr); } }

.facts { padding-top: 0; }
.facts-grid { display: grid; gap: 2rem; }
.facts-grid > div { border-top: 1px solid var(--ink); padding-top: 1.25rem; }
.facts-grid h2 { font-size: 1.25rem; font-stretch: 104%; }
.facts-grid p { color: var(--sub); margin-top: .75rem; }
@media (min-width: 840px) { .facts-grid { grid-template-columns: repeat(3, 1fr); gap: 2.5rem; } }
.specs + .facts, .finishes + .facts, .grades + .facts { padding-top: clamp(64px, 10vw, 128px); }

.gallery-row { display: grid; gap: 4px; }
.gallery figure { aspect-ratio: 3 / 2; overflow: hidden; background: var(--mill); }
.gallery img { width: 100%; height: 100%; object-fit: cover; }
@media (min-width: 720px) { .gallery-row { grid-template-columns: 1fr 1fr; } }
.others .line-list { margin-top: 1.5rem; }

/* 关于 */
.prose { display: grid; gap: 2.25rem; }
.prose-block h2 { font-size: clamp(1.3rem, 2.6vw, 1.75rem); }
.prose-block p { margin-top: .75rem; color: #2B323B; max-width: 40em; }
.prose-narrow { max-width: 44em; }
.facts-card { background: var(--soft); padding: 1.75rem 1.5rem; border-top: 3px solid var(--navy); }
.facts-card h2 { font-size: 1.25rem; margin-bottom: 1rem; }
.facts-card .spec td { font-size: .875rem; }
@media (min-width: 960px) { .facts-card { position: sticky; top: calc(var(--header-h) + 32px); } }

/* 联系：表单 */
.contact-grid { display: grid; gap: 3rem; }
@media (min-width: 960px) { .contact-grid { grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: 4rem; } }
.form-grid { display: grid; gap: 1.25rem; }
@media (min-width: 720px) { .form-grid { grid-template-columns: 1fr 1fr; } .field.wide { grid-column: 1 / -1; } }
.field label { display: block; font-weight: 600; font-size: .9375rem; margin-bottom: .4rem; }
.field .req { color: var(--navy); }
.field .opt { font-weight: 400; color: var(--sub); }
.field input, .field select, .field textarea {
  width: 100%; min-height: 48px; padding: .7rem .85rem;
  background: var(--white); border: 1px solid #AEB5BF; border-radius: var(--radius);
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
}
.field textarea { min-height: 120px; resize: vertical; }
.field :is(input, select, textarea):focus { outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(14, 42, 90, .18); }
.field.bad :is(input, select, textarea) { border-color: var(--bad); }
.hint { font-size: .8125rem; color: var(--sub); margin-top: .35rem; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; margin-top: 1.75rem; }
.form-status { font-weight: 500; }
.form-status.is-ok { color: var(--ok); }
.form-status.is-error { color: var(--bad); }
.form-status.is-busy { color: var(--sub); }
.contact-aside h2 { font-size: 1.125rem; margin-bottom: .75rem; }
.contact-aside h2:not(:first-child) { margin-top: 2.25rem; }
.contact-aside p { color: var(--sub); }
.big-mail { font-size: clamp(1.15rem, 2.4vw, 1.4rem); font-weight: 600; margin-bottom: .5rem; overflow-wrap: anywhere; }
.big-mail a { color: var(--navy); text-decoration: none; border-bottom: 1px solid currentColor; }
.contact-aside .addr { margin-top: 2rem; font-size: .875rem; }

.notfound { min-height: 52vh; display: grid; align-items: center; }

/* ── 50 动效：只有两样，首屏铝卷一圈圈卷上去、滚动淡入。减少动态时只把过渡变成瞬时 ── */
.js .coil-drawing:not(.drawn) .lap,
.js .coil-drawing:not(.drawn) .rim { stroke-dasharray: 1; stroke-dashoffset: 1; }
.js .coil-drawing:not(.drawn) .balloon,
.js .coil-drawing:not(.drawn) .slits,
.js .coil-drawing:not(.drawn) .side { opacity: 0; }
.coil-drawing.wind .lap { animation: wind .55s var(--ease) forwards; animation-delay: calc(var(--i) * 38ms); }
.coil-drawing.wind .rim { animation: wind .8s var(--ease) .85s forwards; }
.coil-drawing.wind .slits { animation: fade .4s var(--ease) 1.25s forwards; }
.coil-drawing.wind .side { animation: fade .5s var(--ease) 1.1s forwards; }
.coil-drawing.wind .balloon { animation: fade .5s var(--ease) 1.45s forwards; }
@keyframes wind { to { stroke-dashoffset: 0; } }
@keyframes fade { to { opacity: 1; } }

.rv { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.rv.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0s !important; animation-duration: 0s !important; animation-delay: 0s !important; }
  .rv { opacity: 1; transform: none; }
}