/* NADIX solar wing — tokens from 02_視覺方向 (space black + solar gold) */
:root {
  --void: #05060A;
  --panel: #0E1117;
  --ink: #F2F2F2;
  --mute: #8A8F98;
  --gold: #E8A33D;
  --cell: #1B2A4E;
  --line: rgba(242, 242, 242, .12);
  --display: "D-DIN", "DIN Alternate", "Bahnschrift", "DIN Condensed", "Arial Narrow", sans-serif;
  --body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", Menlo, Consolas, monospace;
  --gutter: clamp(16px, 5vw, 72px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--void);
  color: var(--ink);
  font: 16px/1.7 var(--body);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* draft ribbon — delete before launch */
.draft {
  position: relative; z-index: 30;
  background: var(--gold); color: var(--void);
  font-size: 13px; text-align: center; padding: 6px var(--gutter);
}
.pending {
  display: inline-block;
  font: 600 11px/1 var(--body);
  color: var(--gold);
  border: 1px dashed var(--gold);
  border-radius: 2px;
  padding: 3px 6px;
  vertical-align: middle;
  letter-spacing: 0;
}

/* header */
.top {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 32px;
  padding: 18px var(--gutter);
  background: linear-gradient(var(--void), rgba(5, 6, 10, 0));
}
.wordmark { display: block; line-height: 0; text-decoration: none; }
/* logo traced from Nadix-logo.jpg (raster, interim); mask so each theme can recolour it. Swap for the vector file from 杜总 */
.wordmark .logo {
  display: block; width: 141px; height: 36px;
  background-color: currentColor;
  -webkit-mask: url(/nadix/assets/brand/nadix-lockup.png) left center / contain no-repeat;
          mask: url(/nadix/assets/brand/nadix-lockup.png) left center / contain no-repeat;
}
.nav { display: flex; gap: 28px; margin-left: auto; }
.nav a {
  font: 600 13px/1 var(--display);
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--mute); text-decoration: none;
}
.nav a:hover { color: var(--ink); }
.lang { display: flex; border: 1px solid var(--line); }
.lang button {
  background: none; border: 0; color: var(--mute);
  font: 600 12px/1 var(--display); letter-spacing: .1em;
  padding: 8px 10px; cursor: pointer;
}
.lang button[aria-pressed="true"] { color: var(--void); background: var(--ink); }

/* hero: sunrise over the limb */
.hero {
  position: relative;
  min-height: calc(100vh - 30px);
  display: flex; align-items: flex-end;
  padding: 0 var(--gutter) 30vh;
  margin-top: -64px;
  overflow: hidden;
}
.limb { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-photo {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: 62% 40%;
  animation: glow 2.4s ease-out both;
}
/* keep the headline readable where it sits over the earth */
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, rgba(5, 6, 10, .9) 0%, rgba(5, 6, 10, .72) 34%, rgba(5, 6, 10, 0) 58%);
}
.hero-copy { z-index: 1; }
html:not([data-theme]) .hero-copy, html[data-theme="a"] .hero-copy { text-shadow: 0 2px 18px rgba(5, 6, 10, .85); }
@media (max-width: 820px) {
  .hero-photo { object-position: 70% 30%; }
  .hero::after { background: linear-gradient(0deg, rgba(5, 6, 10, .92) 0%, rgba(5, 6, 10, .75) 45%, rgba(5, 6, 10, 0) 72%); }
}
html:not([data-theme]) .limb, html[data-theme="a"] .limb,
html:not([data-theme]) .sat-a, html[data-theme="a"] .sat-a { display: none; }
html[data-theme="b"] .hero-photo, html[data-theme="c"] .hero-photo,
html[data-theme="b"] .hero::after, html[data-theme="c"] .hero::after { display: none; }
.limb .sun { transform-origin: 800px 640px; animation: rise 2.8s cubic-bezier(.2, .7, .2, 1) both; }
.limb .rim { animation: glow 2.8s ease-out both; }
@keyframes rise { from { opacity: 0; transform: scale(.3, .6); } to { opacity: 1; transform: none; } }
@keyframes glow { from { opacity: 0; } to { opacity: 1; } }
.hero-copy { position: relative; max-width: 760px; }
.sat-a {
  position: absolute; right: 7%; top: 17%;
  width: min(48vw, 640px); height: auto;
  animation: drift 2.8s cubic-bezier(.2, .7, .2, 1) both;
}
@keyframes drift { from { opacity: 0; transform: translate(-24px, 10px); } to { opacity: 1; transform: none; } }
.eyebrow {
  margin: 0 0 18px;
  font: 600 13px/1 var(--display); letter-spacing: .24em; text-transform: uppercase;
  color: var(--gold);
}
h1 {
  margin: 0;
  font: 700 clamp(40px, 7vw, 92px)/1.05 var(--display);
  letter-spacing: .02em;
}
html[lang="en"] h1 { text-transform: uppercase; letter-spacing: .04em; font-size: clamp(38px, 6vw, 80px); }
.lede { margin: 24px 0 36px; max-width: 520px; color: #C9CCD2; font-size: 17px; }
.cta {
  display: inline-block;
  padding: 16px 28px;
  border: 1px solid var(--ink);
  font: 600 13px/1 var(--display); letter-spacing: .2em; text-transform: uppercase;
  text-decoration: none;
  transition: background .2s, color .2s;
}
.cta:hover { background: var(--ink); color: var(--void); }

/* products */
/* 10/08 v0.2: every section sits in one centred container; content lives in framed blocks */
.products, .orbit, .specs, .uses, .proof { padding: 96px var(--gutter) 0; }
.contact { padding: 120px var(--gutter); }
.products > *, .orbit > *, .specs > *, .uses > *, .proof > * { max-width: 1120px; margin-left: auto; margin-right: auto; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; }

.products { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: calc(1120px + 2 * var(--gutter)); margin: 0 auto; }
.products > h2 { position: absolute; }
.products > .product { margin: 0; }
.product { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.figure {
  position: relative; aspect-ratio: 16 / 10;
  background: var(--void);
  margin: 12px; border-radius: 4px;
  overflow: hidden;
}
/* abstract placeholders, deliberately not photo-like */
.figure-glass::before {
  content: ""; position: absolute; left: 12%; right: 12%; top: 50%;
  height: 2px; background: linear-gradient(90deg, transparent, var(--gold), transparent);
  box-shadow: 0 0 24px rgba(232, 163, 61, .5);
}
.figure-cell::before {
  content: ""; position: absolute; inset: 22% 14%;
  background:
    repeating-linear-gradient(90deg, transparent 0 calc(25% - 1px), var(--line) calc(25% - 1px) 25%),
    repeating-linear-gradient(0deg, transparent 0 calc(33.33% - 1px), var(--line) calc(33.33% - 1px) 33.33%),
    var(--cell);
  border-top: 2px solid var(--gold);
}
.figure-tag {
  position: absolute; left: 16px; bottom: 14px;
  font: 12px/1 var(--mono); color: var(--mute);
}
.product-body { padding: 20px 32px 36px; }
.model { margin: 0 0 10px; font: 12px/1.6 var(--mono); color: var(--mute); letter-spacing: .08em; }
.product h3 { margin: 0 0 14px; font: 700 clamp(24px, 2.6vw, 34px)/1.2 var(--display); }
.product p { color: #C9CCD2; margin: 0; max-width: 46ch; }

/* section scaffolding */
.section-head { margin-bottom: 32px; }
.section-head > * { max-width: 640px; }
.section-head h2, .contact h2 {
  margin: 0 0 14px;
  font: 700 clamp(28px, 3.6vw, 48px)/1.15 var(--display);
}
html[lang="en"] .section-head h2, html[lang="en"] .contact h2 { text-transform: uppercase; letter-spacing: .05em; }
.section-head p { margin: 0; color: var(--mute); }

/* orbit threats: environment → answer → number */
.threats { list-style: none; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.threats li {
  display: flex; flex-direction: column; gap: 10px;
  padding: 28px 32px 30px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 6px;
  border-top: 2px solid var(--gold);
}
.threat { margin: 0; font: 700 22px/1.3 var(--display); }
.answer { margin: 0; color: #C9CCD2; flex: 1; }
.figure-num { margin: 14px 0 0; padding-top: 18px; border-top: 1px solid var(--line); }
.num { font: 700 clamp(30px, 3.4vw, 46px)/1 var(--display); color: var(--gold); }
.unit { margin-left: 8px; font: 12px/1 var(--mono); color: var(--mute); }
.figure-num .pending { margin-left: 8px; }

/* specs */
.spec-card { padding: 8px 32px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 16px 0; border-bottom: 1px solid var(--line); font-weight: 400; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
thead th { font: 600 12px/1 var(--display); letter-spacing: .2em; text-transform: uppercase; color: var(--mute); }
tbody th { color: var(--mute); width: 40%; }
td { font-family: var(--mono); font-size: 15px; }

/* uses */
.use-list { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.use-list li { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; border-top: 2px solid var(--gold); padding: 26px 28px 30px; }
.use-list h3 { margin: 0 0 8px; font: 700 20px/1.3 var(--display); }
.use-list p { margin: 0; color: var(--mute); }

/* proof / contact */
.empty { margin: 0 auto; color: var(--mute); padding: 32px; border: 1px dashed var(--line); border-radius: 6px; }
.contact { text-align: center; background: radial-gradient(ellipse at 50% 120%, rgba(232, 163, 61, .18), transparent 60%); }
.mail { margin: 24px 0 0; font: 18px/1 var(--mono); }

.foot {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 28px var(--gutter);
  border-top: 1px solid var(--line);
  font-size: 13px; color: var(--mute);
}
.foot a { text-decoration: none; }
.foot a:hover { color: var(--ink); }

/* mobile */
@media (max-width: 820px) {
  .nav { display: none; }
  .lang { margin-left: auto; }
  .products { grid-template-columns: 1fr; }
  .threats li { grid-template-columns: 1fr; gap: 8px; }
  .figure-num { text-align: left; }
  .use-list { grid-template-columns: 1fr; gap: 32px; }
  .products, .orbit, .specs, .uses, .proof { padding-top: 64px; }
  .contact { padding: 88px var(--gutter); }
  .threats { grid-template-columns: 1fr; }
  .spec-card { padding: 4px 20px; }
  .product-body, .threats li, .use-list li { padding-left: 22px; padding-right: 22px; }
  tbody th { width: 45%; }
}

@media (max-width: 820px) {
  .sat-a { width: 92vw; right: 4vw; top: 12%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .limb .sun, .limb .rim, .sat-a, .hero-photo { animation: none; }
}

/* ================================================================
   Variants for 欧阳总 to choose (preview via ?theme=a|b|c).
   A = 深空 (default, above). Delete the two unused blocks at launch.
   ================================================================ */
.art { display: none; }
html[data-theme="b"] .sat-a, html[data-theme="c"] .sat-a { display: none; }
html[data-theme="b"] .art-b .wing-hi { fill: var(--gold); fill-opacity: .35; }

/* ---------- B 白昼 · 工程图 ---------- */
html[data-theme="b"] {
  --void: #F4F5F6; --panel: #FFFFFF; --ink: #0B0C0E; --mute: #5E636B;
  --gold: #A9721F; --cell: #1B2A4E; --line: rgba(11, 12, 14, .14);
}
html[data-theme="b"] .top { background: rgba(244, 245, 246, .92); backdrop-filter: blur(6px); }
html[data-theme="b"] .limb { display: none; }
html[data-theme="b"] .hero {
  margin-top: 0; min-height: 86vh; padding: 64px var(--gutter);
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: center;
}
html[data-theme="b"] .hero-copy { grid-column: 1; grid-row: 1; }
html[data-theme="b"] .art-b { display: block; grid-column: 2; grid-row: 1; color: var(--ink); }
html[data-theme="b"] .art-b svg { width: 100%; height: auto; display: block; }
html[data-theme="b"] .art-b .sheet { stroke: var(--gold); stroke-opacity: .55; }
html[data-theme="b"] .art-b .dim { font: 15px var(--mono); fill: var(--ink); }
html[data-theme="b"] .art-b .tb { font: 11px var(--mono); fill: var(--mute); letter-spacing: .08em; }
html[data-theme="b"] .lede, html[data-theme="b"] .product p, html[data-theme="b"] .answer { color: #33373D; }
html[data-theme="b"] .figure { background: #E6E8EB; }
html[data-theme="b"] .contact { background: none; border-top: 1px solid var(--line); }
html[data-theme="b"] .cta:hover { color: var(--panel); }
html[data-theme="b"] .lang button[aria-pressed="true"] { color: var(--panel); }

/* ---------- C 金箔 · 轨道 ---------- */
html[data-theme="c"] {
  --void: #11100E; --panel: #1A1815; --ink: #EEE7DA; --mute: #9A9284;
  --gold: #E2A846; --line: rgba(238, 231, 218, .13);
}
html[data-theme="c"] .limb { display: none; }
html[data-theme="c"] .top { background: none; }
html[data-theme="c"] .top .wordmark, html[data-theme="c"] .top .nav a { color: #1A1306; }
html[data-theme="c"] .lang { border-color: rgba(26, 19, 6, .35); }
html[data-theme="c"] .lang button { color: #4A3A18; }
html[data-theme="c"] .lang button[aria-pressed="true"] { background: #1A1306; color: #E2A846; }
html[data-theme="c"] .hero {
  color: #1A1306;
  background:
    radial-gradient(120% 90% at 20% 10%, #F3C66A 0%, #D99A35 45%, #A8701F 100%);
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center;
  padding: 120px var(--gutter) 96px;
}
html[data-theme="c"] .hero::before {
  /* foil crinkle */
  content: ""; position: absolute; inset: 0; opacity: .22; mix-blend-mode: multiply;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400'%3E%3Cfilter id='f'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.012 .03' numOctaves='3' seed='4' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .35 0 0 0 0 .22 0 0 0 0 .05 0 0 0 1.4 -.35'/%3E%3C/filter%3E%3Crect width='400' height='400' filter='url(%23f)'/%3E%3C/svg%3E");
}
html[data-theme="c"] .hero-copy { grid-column: 1; grid-row: 1; }
html[data-theme="c"] .eyebrow { color: #4A3A18; }
html[data-theme="c"] .lede { color: #2E2410; }
html[data-theme="c"] .cta { border-color: #1A1306; color: #1A1306; }
html[data-theme="c"] .cta:hover { background: #1A1306; color: #E2A846; }
html[data-theme="c"] .art-c { display: block; position: relative; grid-column: 2; grid-row: 1; color: #1A1306; text-align: center; }
html[data-theme="c"] .art-c svg { width: min(100%, 440px); height: auto; }
html[data-theme="c"] .art-c .olabel { font: 600 14px var(--display); letter-spacing: .2em; fill: #1A1306; }
html[data-theme="c"] .art-c .sat { transform-box: view-box; transform-origin: 240px 240px; animation: orbit 16s linear infinite; }
@keyframes orbit { to { transform: rotate(360deg); } }
html[data-theme="c"] .art-caption { margin: 8px 0 0; font: 12px var(--mono); color: #3A2D12; }
html[data-theme="c"] .num { color: var(--gold); }
html[data-theme="c"] .figure-glass::before { background: linear-gradient(90deg, transparent, #F3C66A, transparent); }

@media (max-width: 820px) {
  html[data-theme="b"] .hero, html[data-theme="c"] .hero { grid-template-columns: 1fr; padding-top: 48px; }
  html[data-theme="b"] .art-b, html[data-theme="c"] .art-c { grid-column: 1; grid-row: 2; }
  html[data-theme="c"] .hero { padding-top: 96px; }
}
@media (prefers-reduced-motion: reduce) {
  html[data-theme="c"] .art-c .sat { animation: none; }
}

/* ================================================================
   10/09 欧阳总选定方案 A，并要求「在 A 里多加些金箔色」。
   金箔质感取自方案 C（渐层＋褶皱纹理），只作重点，不改深空底色。
   ================================================================ */
:root {
  --foil: linear-gradient(115deg, #A8701F 0%, #E2A846 22%, #F7D98B 38%, #D99A35 55%, #F3C66A 72%, #A8701F 100%);
  --crinkle: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400'%3E%3Cfilter id='f'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.012 .03' numOctaves='3' seed='4' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .35 0 0 0 0 .22 0 0 0 0 .05 0 0 0 1.4 -.35'/%3E%3C/filter%3E%3Crect width='400' height='400' filter='url(%23f)'/%3E%3C/svg%3E");
}
/* 按钮：实心金箔 */
html:not([data-theme="b"]):not([data-theme="c"]) .cta {
  border: 0; color: #1A1306; background: var(--crinkle), var(--foil); background-blend-mode: multiply;
  box-shadow: 0 6px 24px rgba(232, 163, 61, .25);
}
html:not([data-theme="b"]):not([data-theme="c"]) .cta:hover { filter: brightness(1.08); background: var(--crinkle), var(--foil); color: #1A1306; }
/* 首页下缘金箔带 */
html:not([data-theme="b"]):not([data-theme="c"]) .hero { border-bottom: 0; }
html:not([data-theme="b"]):not([data-theme="c"]) .hero + .products { position: relative; }
html:not([data-theme="b"]):not([data-theme="c"]) .hero::before {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 6px; z-index: 2;
  background: var(--crinkle), var(--foil); background-blend-mode: multiply;
}
/* 段落标题上方金箔短条 */
html:not([data-theme="b"]):not([data-theme="c"]) .section-head h2::before,
html:not([data-theme="b"]):not([data-theme="c"]) .contact h2::before {
  content: ""; display: block; width: 56px; height: 5px; margin-bottom: 18px; border-radius: 2px;
  background: var(--crinkle), var(--foil); background-blend-mode: multiply;
}
/* 卡片顶边与大数字：金箔渐层 */
html:not([data-theme="b"]):not([data-theme="c"]) .threats li,
html:not([data-theme="b"]):not([data-theme="c"]) .use-list li { border-top: 0; position: relative; }
html:not([data-theme="b"]):not([data-theme="c"]) .threats li::before,
html:not([data-theme="b"]):not([data-theme="c"]) .use-list li::before,
html:not([data-theme="b"]):not([data-theme="c"]) .product::before {
  content: ""; position: absolute; left: -1px; right: -1px; top: -1px; height: 3px; border-radius: 6px 6px 0 0;
  background: var(--crinkle), var(--foil); background-blend-mode: multiply;
}
html:not([data-theme="b"]):not([data-theme="c"]) .product { position: relative; }
html:not([data-theme="b"]):not([data-theme="c"]) .num {
  background: var(--foil); -webkit-background-clip: text; background-clip: text; color: transparent;
}
/* 规格表参数栏、表头 */
html:not([data-theme="b"]):not([data-theme="c"]) thead th { color: #E2A846; }
/* 联系区：整块金箔底 */
html:not([data-theme="b"]):not([data-theme="c"]) .contact {
  position: relative; color: #1A1306; background: var(--crinkle), radial-gradient(120% 90% at 20% 10%, #F3C66A 0%, #D99A35 45%, #A8701F 100%);
  background-blend-mode: multiply;
}
html:not([data-theme="b"]):not([data-theme="c"]) .contact h2::before { margin-left: auto; margin-right: auto; background: #1A1306; }
html:not([data-theme="b"]):not([data-theme="c"]) .contact .pending { color: #1A1306; border-color: #1A1306; }
/* 页尾：金箔细线 */
html:not([data-theme="b"]):not([data-theme="c"]) .foot { border-top: 0; position: relative; }
/* 金箔纹理不平铺（平铺会出现接缝）：单张拉满 */
html:not([data-theme="b"]):not([data-theme="c"]) .contact,
html:not([data-theme="b"]):not([data-theme="c"]) .cta,
html:not([data-theme="b"]):not([data-theme="c"]) .hero::before,
html:not([data-theme="b"]):not([data-theme="c"]) .section-head h2::before,
html:not([data-theme="b"]):not([data-theme="c"]) .threats li::before,
html:not([data-theme="b"]):not([data-theme="c"]) .use-list li::before,
html:not([data-theme="b"]):not([data-theme="c"]) .product::before { background-size: 100% 100%, 100% 100%; background-repeat: no-repeat; }

/* ---------------- 金箔浓度（预览用 ?gold=1|2|3；1＝点缀，为默认） ---------------- */
/* 金二「金框」：标志、导航、卡片外框、标题字、表头 */
html[data-gold="2"]:not([data-theme="b"]):not([data-theme="c"]) .wordmark .logo,
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) .wordmark .logo { background: var(--foil); }
html[data-gold="2"]:not([data-theme="b"]):not([data-theme="c"]) .top,
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) .top { box-shadow: inset 0 -1px 0 rgba(226, 168, 70, .55); }
html[data-gold="2"]:not([data-theme="b"]):not([data-theme="c"]) :is(.product, .threats li, .use-list li, .spec-card),
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) :is(.product, .threats li, .use-list li, .spec-card) {
  border: 1px solid transparent;
  background: linear-gradient(var(--panel), var(--panel)) padding-box, var(--foil) border-box;
}
html[data-gold="2"]:not([data-theme="b"]):not([data-theme="c"]) .section-head h2,
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) .section-head h2 {
  background: var(--foil); -webkit-background-clip: text; background-clip: text; color: transparent; width: fit-content;
}
html[data-gold="2"]:not([data-theme="b"]):not([data-theme="c"]) .section-head h2::before,
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) .section-head h2::before { -webkit-background-clip: border-box; background-clip: border-box; }
html[data-gold="2"]:not([data-theme="b"]):not([data-theme="c"]) thead th,
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) thead th { background: var(--foil); color: #1A1306; padding-left: 12px; }
html[data-gold="2"]:not([data-theme="b"]):not([data-theme="c"]) .foot,
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) .foot { box-shadow: inset 0 1px 0 rgba(226, 168, 70, .55); }

/* 金三「金箔主导」：首页标题第二行金箔字、「四种考验」整段金箔底 */
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) h1 .l2 {
  background: var(--foil); -webkit-background-clip: text; background-clip: text; color: transparent;
}
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) .orbit {
  margin-top: 96px; padding-bottom: 96px;
  background: var(--crinkle), radial-gradient(120% 90% at 20% 10%, #F3C66A 0%, #D99A35 45%, #A8701F 100%);
  background-size: 100% 100%, 100% 100%; background-repeat: no-repeat; background-blend-mode: multiply;
}
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) .orbit .section-head h2 { background: none; color: #1A1306; }
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) .orbit .section-head h2::before { background: #1A1306; }
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) .orbit .section-head p { color: #2E2410; }
html[data-gold="3"]:not([data-theme="b"]):not([data-theme="c"]) .orbit .threats li { background: linear-gradient(rgba(10, 8, 4, .9), rgba(10, 8, 4, .9)) padding-box, var(--foil) border-box; }

/* 10/10 内容填入：产品三栏＋实物照片＋测试表 */
.products { grid-template-columns: repeat(3, 1fr); }
.figure-photo { background: #0b0d12; }
.figure-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.figure-photo .figure-tag { z-index: 1; color: #E8E8E8; background: rgba(5, 6, 10, .55); padding: 4px 8px; border-radius: 3px; }
.spec-card td { line-height: 1.75; }
.proof-table th, .proof-table td { padding-right: 16px; font-size: 15px; }
.proof-table td { font-family: var(--body); }
.proof-table tbody th { width: auto; color: var(--ink); font-weight: 600; white-space: nowrap; }
.proof-table td:nth-child(3) { font-family: var(--mono); white-space: nowrap; }
.contact .mail a { color: inherit; text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 1080px) { .products { grid-template-columns: 1fr 1fr; } }
@media (max-width: 820px) {
  .products { grid-template-columns: 1fr; }
  .proof-table thead { display: none; }
  .proof-table tr { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .proof-table th, .proof-table td { display: block; border: 0; padding: 2px 0; white-space: normal; }
}

/* 10/11 在轨展开影片 */
.deploy { padding: 96px var(--gutter) 0; }
.deploy > * { max-width: 1120px; margin-left: auto; margin-right: auto; }
.video-card { margin: 0 auto; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: #000; position: relative; }
.video-card::before { content: ""; position: absolute; left: -1px; right: -1px; top: -1px; height: 3px; z-index: 1;
  background: var(--crinkle), var(--foil); background-size: 100% 100%, 100% 100%; background-repeat: no-repeat; background-blend-mode: multiply; }
.video-card video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.video-card figcaption { padding: 10px 16px; font: 12px/1.4 var(--mono); color: var(--mute); background: var(--panel); }
@media (max-width: 820px) { .deploy { padding-top: 64px; } }

/* 10/11 轨道段三方案（预览 ?orbit=a|b|c；a＝双卡为默认） */
.threats .t-bend, .orbit-art { display: none; }
html[data-orbit="b"] .orbit > .threats { grid-template-columns: 1fr; max-width: 1120px; }
html[data-orbit="b"] .orbit-art { display: block; color: var(--ink); text-align: center; }
html[data-orbit="b"] .orbit-art svg { width: min(100%, 360px); height: auto; }
html[data-orbit="b"] .orbit-art .olabel { font: 600 14px var(--display); letter-spacing: .2em; fill: var(--mute); }
html[data-orbit="b"] .orbit-art .art-caption { margin: 6px 0 0; font: 12px var(--mono); color: var(--mute); }
html[data-orbit="c"] .threats .t-bend { display: flex; }
html[data-orbit="c"] .threats { grid-template-columns: repeat(3, 1fr); }
@media (min-width: 821px) {
  html[data-orbit="b"] .orbit { display: grid; grid-template-columns: minmax(0, 1fr) 380px; column-gap: 32px; align-items: center;
    padding-left: max(var(--gutter), calc((100% - 1120px) / 2)); padding-right: max(var(--gutter), calc((100% - 1120px) / 2)); }
  html[data-orbit="b"] .orbit > .section-head { grid-column: 1 / -1; }
  html[data-orbit="b"] .orbit > * { max-width: none; margin-left: 0; margin-right: 0; }
}
@media (max-width: 820px) { html[data-orbit="c"] .threats { grid-template-columns: 1fr; } }

/* 10/12 测试与验证 → 联系区（整块金箔底）之间留白，否则表格贴着金箔 */
.proof { padding-bottom: 96px; }
@media (max-width: 820px) { .proof { padding-bottom: 64px; } }

/* 10/12 联系区：微信公众号二维码（欧阳总要求） */
.contact .qr { margin: 28px auto 0; display: inline-flex; flex-direction: column; align-items: center; gap: 10px; }
.contact .qr img { display: block; width: 136px; height: 136px; padding: 8px; background: #fff; border-radius: 6px; }
.contact .qr figcaption { font-size: 13px; letter-spacing: .04em; }

/* 10/12 动态（文章）：/nadix/news/ 与产品页「最新动态」 */
html:not([lang="en"]) [data-en], html[lang="en"] [data-zh] { display: none; }
.news-page main { padding: 32px var(--gutter) 96px; }
.news-list-page, .article { max-width: 880px; margin: 0 auto; }
.news-h1 { font-size: clamp(32px, 5vw, 48px); margin: 0; }
.news-list { list-style: none; margin: 32px 0 0; padding: 0; display: grid; gap: 16px; }
.news-item a { display: grid; grid-template-columns: 200px 1fr; gap: 20px; text-decoration: none; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 14px; transition: border-color .2s; }
.news-item a:hover { border-color: var(--gold); }
.news-thumb { aspect-ratio: 16 / 10; overflow: hidden; border-radius: 4px; background: #0A0D14; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.news-noimg { display: block; width: 100%; height: 100%; background: linear-gradient(135deg, #10172A, #05060A); }
.news-text { display: grid; gap: 6px; align-content: start; }
.news-text time { font: 12px/1.4 var(--mono); color: var(--mute); }
.news-text strong { font-size: 19px; line-height: 1.4; }
.news-sum { color: var(--mute); font-size: 14px; }
.news-empty { color: var(--mute); margin-top: 32px; }
.article-back a { color: var(--mute); text-decoration: none; font-size: 14px; }
.article-back a:hover { color: var(--gold); }
.article-date { font: 13px/1.4 var(--mono); color: var(--mute); margin: 28px 0 8px; }
.article h1 { font-size: clamp(28px, 4.4vw, 42px); line-height: 1.25; margin: 0 0 24px; }
.article-cover { margin: 0 0 28px; border-radius: 6px; overflow: hidden; border: 1px solid var(--line); }
.article-cover img { display: block; width: 100%; height: auto; }
.article-body { font-size: 17px; line-height: 1.9; }
.article-body h2 { font-size: 22px; margin: 36px 0 12px; }
.article-body h3 { font-size: 18px; margin: 28px 0 10px; }
.article-body img { max-width: 100%; height: auto; display: block; margin: 20px 0; border-radius: 4px; }
.article-body a { color: var(--gold); }
.article-body blockquote { margin: 20px 0; padding: 4px 18px; border-left: 3px solid var(--gold); color: var(--mute); }
.article-body table { border-collapse: collapse; width: 100%; font-size: 15px; }
.article-body th, .article-body td { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; }
.zh-only-note { color: var(--mute); font-size: 14px; border: 1px dashed var(--line); padding: 8px 12px; border-radius: 4px; }
/* 产品页「最新动态」：没有已发布文章时整段隐藏（由 site.js 读 latest.json 决定） */
.newsfeed { padding: 96px var(--gutter) 0; }
.newsfeed > * { max-width: 1120px; margin-left: auto; margin-right: auto; }
.newsfeed .news-list { grid-template-columns: repeat(3, 1fr); margin-top: 0; }
.newsfeed .news-item a { grid-template-columns: 1fr; height: 100%; }
.newsfeed .more { margin-top: 16px; text-align: right; }
.newsfeed .more a { color: var(--gold); text-decoration: none; font-size: 14px; }
@media (max-width: 820px) {
  .news-item a { grid-template-columns: 1fr; }
  .newsfeed { padding-top: 64px; }
  .newsfeed .news-list { grid-template-columns: 1fr; }
}
/* 动态页标题不套用首页大标题的英文样式（全大写＋超大字） */
html[lang="en"] .article h1, html[lang="en"] .news-h1 { text-transform: none; letter-spacing: 0; }
html[lang="en"] .article h1 { font-size: clamp(28px, 4.4vw, 42px); }
html[lang="en"] .news-h1 { font-size: clamp(32px, 5vw, 48px); }