/* ============================================================
   variable-instrument · 仪器面板 / Test Report
   基于变量（hbyv10sya1）文本信息的全新首页主题
   ============================================================ */

:root {
    /* 面板与墨色 */
    --bg: #edefea;            /* 瓷灰面板 */
    --panel: #f7f8f5;         /* 面板亮区 */
    --ink: #1b231f;           /* 墨 */
    --ink-2: #57635c;         /* 次级墨 */
    --ink-3: #8a948e;         /* 弱墨 */
    --line: rgba(27, 35, 31, .16);
    --line-strong: rgba(27, 35, 31, .34);

    /* 磷光与信号 */
    --phos: #0f9d5c;          /* 面板上的磷光绿 */
    --phos-bright: #46e896;   /* 深色屏上的波束绿 */
    --crt: #0c1310;           /* CRT 屏底色 */
    --sig: #e4570f;           /* 信号橙：仅用于 CTA 与注意 */

    /* 深色底（页脚底板） */
    --plate: #141a17;
    --plate-line: rgba(237, 239, 234, .14);
    --plate-text: rgba(237, 239, 234, .82);

    --font-body: "Instrument Sans", "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
    --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "PingFang SC", monospace;

    --radius: 6px;
    --crt-radius: 14px;
    --wrap: 1280px;
}

/* ---------------- 基础 ---------------- */

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body.vi-body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; }

section[id], footer[id] { scroll-margin-top: 84px; }

::selection { background: var(--phos); color: #fff; }

:focus-visible {
    outline: 2px solid var(--sig);
    outline-offset: 2px;
    border-radius: 2px;
}

.vi-skip {
    position: fixed;
    top: -48px;
    left: 16px;
    z-index: 99;
    padding: 8px 14px;
    background: var(--ink);
    color: var(--bg);
    font-size: 13px;
    border-radius: var(--radius);
    transition: top .2s;
}
.vi-skip:focus { top: 12px; }

.vi-container {
    max-width: var(--wrap);
    margin-inline: auto;
    padding-inline: clamp(20px, 4vw, 48px);
}

.mono { font-family: var(--font-mono); }

.vi-ico { width: 1em; height: 1em; vertical-align: -0.12em; }

/* ---------------- 按钮 ---------------- */

.vi-btn {
    display: inline-flex;
    align-items: center;
    gap: .5em;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: .02em;
    line-height: 1.2;
    border: 1px solid transparent;
    transition: background-color .18s, color .18s, border-color .18s;
}
.vi-btn-solid { background: var(--ink); color: var(--bg); }
.vi-btn-solid:hover { background: var(--sig); color: #fff; }
.vi-btn-ghost { border-color: var(--line-strong); color: var(--ink); background: transparent; }
.vi-btn-ghost:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.vi-btn-sm { padding: 8px 16px; font-size: 13.5px; }

/* ---------------- 顶部仪表栏 ---------------- */

.vi-topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(237, 239, 234, .92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
}

.vi-topbar-inner {
    display: flex;
    align-items: center;
    gap: 32px;
    height: 64px;
}

.vi-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}
.vi-brand-logo { height: 30px; width: auto; }
.vi-brand-name {
    font-size: 19px;
    font-weight: 700;
    letter-spacing: .01em;
    white-space: nowrap;
}
.vi-brand-logo[src=""], .vi-brand-logo:not([src]) { display: none; }

.vi-nav {
    display: flex;
    gap: 28px;
    margin-left: 8px;
}
.vi-nav a {
    position: relative;
    font-size: 14.5px;
    font-weight: 500;
    color: var(--ink-2);
    padding: 4px 0;
    transition: color .15s;
}
.vi-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 100%;
    bottom: 0;
    height: 2px;
    background: var(--phos);
    transition: right .2s;
}
.vi-nav a:hover { color: var(--ink); }
.vi-nav a:hover::after { right: 0; }

.vi-topbar-status {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-left: auto;
    white-space: nowrap;
}
.vi-live {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 12.5px;
    color: var(--ink-2);
}
.vi-live-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--phos);
    box-shadow: 0 0 0 0 rgba(15, 157, 92, .45);
    animation: vi-pulse 2.4s ease-out infinite;
}
@keyframes vi-pulse {
    0%   { box-shadow: 0 0 0 0 rgba(15, 157, 92, .45); }
    70%  { box-shadow: 0 0 0 8px rgba(15, 157, 92, 0); }
    100% { box-shadow: 0 0 0 0 rgba(15, 157, 92, 0); }
}
.vi-run {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: .08em;
    color: var(--phos);
    border: 1px solid rgba(15, 157, 92, .35);
    border-radius: 4px;
    padding: 3px 8px;
}

/* ---------------- HERO ---------------- */

.vi-hero {
    background-image:
        linear-gradient(rgba(27, 35, 31, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(27, 35, 31, .045) 1px, transparent 1px);
    background-size: 36px 36px;
    border-bottom: 1px solid var(--line);
}

.vi-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: center;
    padding-block: clamp(48px, 8vh, 88px) clamp(48px, 7vh, 76px);
}

.vi-eyebrow {
    display: flex;
    align-items: center;
    gap: 14px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: .18em;
    color: var(--phos);
    margin-bottom: 22px;
}
.vi-eyebrow::after {
    content: "";
    flex: 0 0 72px;
    height: 1px;
    background: var(--line-strong);
}

.vi-h1 { line-height: 1.12; font-weight: 700; }
.vi-h1-name {
    display: block;
    font-size: clamp(2.5rem, 4.6vw, 3.9rem);
    letter-spacing: -0.015em;
}
.vi-h1-tag {
    display: block;
    margin-top: 6px;
    font-size: clamp(1.9rem, 3.4vw, 2.9rem);
    font-weight: 800;
    letter-spacing: .01em;
}
.vi-h1-stamp {
    position: relative;
    display: inline-block;
    padding: 0 .08em;
    margin: 0 .04em;
    color: var(--phos);
    border: 2.5px solid var(--phos);
    border-radius: .16em;
    transform: rotate(-3.5deg);
}
.vi-h1-stamp::after {
    content: "PASS";
    position: absolute;
    top: -0.62em;
    right: -0.1em;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: .16em;
    color: var(--phos);
    background: var(--bg);
    padding: 0 3px;
}

.vi-hero-desc {
    margin-top: 20px;
    max-width: 40em;
    font-size: 16.5px;
    color: var(--ink-2);
}

.vi-hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 30px;
}

.vi-hero-stats {
    display: flex;
    flex-wrap: wrap;
    margin-top: 34px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: .1em;
    color: var(--ink-2);
}
.vi-hero-stats li { padding: 2px 14px; border-left: 1px solid var(--line-strong); }
.vi-hero-stats li:first-child { padding-left: 0; border-left: 0; }

/* ---------------- CRT 示波屏 ---------------- */

.vi-crt {
    position: relative;
}
.vi-crt-screen {
    position: relative;
    border-radius: var(--crt-radius);
    background: var(--ink);
    padding: clamp(8px, 1vw, 12px);
    box-shadow:
        0 24px 48px -20px rgba(27, 35, 31, .45),
        inset 0 1px 0 rgba(255, 255, 255, .08);
}
.vi-crt-screen::before {
    content: "";
    position: absolute;
    inset: 10px;
    border-radius: calc(var(--crt-radius) - 6px);
    background: var(--crt);
    box-shadow: inset 0 0 44px rgba(0, 0, 0, .55);
}
#viScope {
    position: relative;
    display: block;
    width: 100%;
    aspect-ratio: 16 / 10;
    border-radius: calc(var(--crt-radius) - 6px);
    cursor: grab;
    touch-action: none;
}
#viScope:active { cursor: grabbing; }
#viScope.flat { cursor: default; }

.vi-crt-scan {
    position: absolute;
    inset: 10px;
    border-radius: calc(var(--crt-radius) - 6px);
    pointer-events: none;
    background:
        repeating-linear-gradient(0deg, transparent 0 2px, rgba(0, 0, 0, .16) 2px 3px),
        radial-gradient(120% 90% at 50% 40%, transparent 55%, rgba(0, 0, 0, .4)),
        linear-gradient(115deg, rgba(255, 255, 255, .05), transparent 38%);
}

.vi-crt-hud { pointer-events: none; }
.vi-hud {
    position: absolute;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: .1em;
    color: rgba(70, 232, 150, .82);
    text-shadow: 0 0 8px rgba(70, 232, 150, .35);
}
.vi-hud.tl { top: 22px; left: 24px; }
.vi-hud.tr { top: 22px; right: 24px; }
.vi-hud.bl { bottom: 20px; left: 24px; }
.vi-hud.br { bottom: 20px; right: 24px; color: rgba(70, 232, 150, .5); }

.vi-crt-caption {
    margin-top: 12px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: .12em;
    color: var(--ink-3);
    text-align: right;
}

/* ---------------- 规格走带 ---------------- */

.vi-ticker {
    border-bottom: 1px solid var(--line);
    background: var(--panel);
    overflow: hidden;
}
.vi-ticker-track {
    display: flex;
    width: max-content;
    padding-block: 13px;
    animation: vi-marquee 48s linear infinite;
    will-change: transform;
}
.vi-ticker:hover .vi-ticker-track { animation-play-state: paused; }
.vi-ticker-track span {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: .14em;
    color: var(--ink-2);
    margin-right: 3.5rem;
    white-space: nowrap;
}
.vi-ticker-track span::after {
    content: "///";
    margin-left: 3.5rem;
    color: var(--phos);
    font-weight: 600;
}
@keyframes vi-marquee {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}

/* ---------------- 章节骨架 ---------------- */

.vi-section { padding-block: clamp(64px, 9vw, 104px); }
.vi-section-alt {
    background: var(--panel);
    border-block: 1px solid var(--line);
}

.vi-sec-head {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: end;
    gap: 20px 28px;
    margin-bottom: clamp(36px, 5vw, 56px);
}
.vi-sec-no {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .16em;
    color: var(--phos);
    padding-bottom: 6px;
    border-bottom: 2px solid var(--phos);
}
.vi-sec-title {
    font-size: clamp(1.7rem, 2.8vw, 2.3rem);
    font-weight: 700;
    letter-spacing: .01em;
    line-height: 1.2;
}
.vi-sec-sub {
    margin-top: 6px;
    font-size: 15px;
    color: var(--ink-2);
}
.vi-sec-more {
    display: inline-flex;
    align-items: center;
    gap: .4em;
    font-family: var(--font-mono);
    font-size: 12.5px;
    letter-spacing: .1em;
    color: var(--ink-2);
    padding-bottom: 6px;
    transition: color .15s;
}
.vi-sec-more:hover { color: var(--sig); }
.vi-sec-more .vi-ico { transition: transform .18s; }
.vi-sec-more:hover .vi-ico { transform: translateX(3px); }

/* ---------------- §01 产品矩阵 · 台账行 ---------------- */

.vi-rows { border-top: 1px solid var(--line-strong); }

.vi-row {
    display: grid;
    grid-template-columns: 64px 208px minmax(0, 1fr) auto 44px;
    align-items: center;
    gap: 12px 24px;
    padding: 26px 8px;
    border-bottom: 1px solid var(--line-strong);
    transition: background-color .18s, padding-left .18s;
}
.vi-row:hover { background: var(--panel); padding-left: 18px; }

.vi-row-idx {
    font-family: var(--font-mono);
    font-size: 12.5px;
    font-weight: 600;
    letter-spacing: .1em;
    color: var(--ink-3);
    transition: color .18s;
}
.vi-row:hover .vi-row-idx { color: var(--phos); }

.vi-row-name {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 19px;
    font-weight: 700;
}
.vi-row-ico { width: 22px; height: 22px; color: var(--ink-2); flex: none; }

.vi-row-desc { font-size: 14.5px; color: var(--ink-2); }

.vi-row-points {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 0;
    font-size: 12.5px;
}
.vi-row-points b {
    font-family: var(--font-mono);
    font-weight: 500;
    letter-spacing: .04em;
    color: var(--ink-2);
    padding: 0 14px;
    border-left: 1px solid var(--line);
    white-space: nowrap;
}
.vi-row-points b:first-child { border-left: 0; padding-left: 0; }

.vi-row-go {
    display: flex;
    justify-content: flex-end;
    font-size: 18px;
    color: var(--ink-3);
    transition: color .18s, transform .18s;
}
.vi-row:hover .vi-row-go { color: var(--sig); transform: translateX(4px); }

/* ---------------- §02 特性测定 · 双栏台账 ---------------- */

.vi-feats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: clamp(32px, 5vw, 72px);
}

.vi-feat {
    display: grid;
    grid-template-columns: 56px 1fr auto;
    align-items: start;
    gap: 16px;
    padding: 26px 0;
    border-top: 1px solid var(--line-strong);
}
.vi-feat-idx {
    font-family: var(--font-mono);
    font-size: 12.5px;
    font-weight: 600;
    letter-spacing: .1em;
    color: var(--phos);
    padding-top: 5px;
}
.vi-feat-body h3 {
    font-size: 17.5px;
    font-weight: 700;
    letter-spacing: .01em;
}
.vi-feat-body p {
    margin-top: 6px;
    font-size: 14px;
    line-height: 1.75;
    color: var(--ink-2);
}
.vi-feat-tag {
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: .06em;
    color: var(--ink-2);
    padding: 4px 10px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    white-space: nowrap;
    margin-top: 2px;
}

/* ---------------- §03 运行日志 ---------------- */

.vi-news { border-top: 1px solid var(--line-strong); }

.vi-news-row {
    display: grid;
    grid-template-columns: 118px 1fr 32px;
    align-items: center;
    gap: 20px;
    padding: 18px 8px;
    border-bottom: 1px solid var(--line);
    transition: background-color .15s, padding-left .15s;
}
.vi-news-row:hover { background: var(--panel); padding-left: 16px; }
.vi-news-row time {
    font-family: var(--font-mono);
    font-size: 12.5px;
    letter-spacing: .06em;
    color: var(--phos);
}
.vi-news-row .vi-news-title {
    font-size: 15.5px;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color .15s;
}
.vi-news-row:hover .vi-news-title { color: var(--phos); }
.vi-news-row .vi-news-go {
    font-size: 16px;
    color: var(--ink-3);
    text-align: right;
    transition: color .15s, transform .15s;
}
.vi-news-row:hover .vi-news-go { color: var(--sig); transform: translate(2px, -2px); }

.vi-news-state {
    padding: 26px 8px;
    font-family: var(--font-mono);
    font-size: 12.5px;
    letter-spacing: .1em;
    color: var(--ink-3);
}

/* ---------------- 页脚 · 底板 ---------------- */

.vi-footer {
    background: var(--plate);
    color: var(--plate-text);
    padding-top: clamp(56px, 7vw, 80px);
}

.vi-footer-grid {
    display: grid;
    grid-template-columns: 1.7fr .8fr .8fr 1.2fr;
    gap: 40px;
    padding-bottom: 48px;
}

.vi-brand-footer .vi-brand-name { color: #fff; font-size: 17px; }
.vi-brand-footer .vi-brand-logo { height: 26px; }

.vi-fcol-brand p {
    margin-top: 14px;
    font-size: 13.5px;
    line-height: 1.85;
    color: rgba(237, 239, 234, .6);
    max-width: 34em;
}

.vi-fcol-title {
    font-family: var(--font-mono);
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: .2em;
    color: var(--phos-bright);
    margin-bottom: 18px;
}

.vi-flinks li + li { margin-top: 10px; }
.vi-flinks a {
    font-size: 14px;
    color: rgba(237, 239, 234, .72);
    transition: color .15s;
}
.vi-flinks a:hover { color: var(--phos-bright); }

.vi-fcontact li {
    display: flex;
    gap: 14px;
    padding: 7px 0;
    font-size: 13.5px;
}
.vi-fc-k {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .1em;
    color: rgba(237, 239, 234, .45);
    padding-top: 2px;
    min-width: 38px;
}

.vi-fsocial {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}
.vi-fsocial a {
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: .08em;
    color: rgba(237, 239, 234, .75);
    padding: 6px 12px;
    border: 1px solid var(--plate-line);
    border-radius: 4px;
    transition: color .15s, border-color .15s;
}
.vi-fsocial a:hover { color: var(--phos-bright); border-color: var(--phos-bright); }

.vi-footer-links {
    border-top: 1px solid var(--plate-line);
    padding-block: 26px;
}
.vi-footer-links .vi-fcol-title { margin-bottom: 12px; }
.vi-footer-links-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 28px;
}
.vi-footer-links-row a {
    font-size: 13px;
    color: rgba(237, 239, 234, .6);
    transition: color .15s;
}
.vi-footer-links-row a:hover { color: var(--phos-bright); }

.vi-footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px 24px;
    border-top: 1px solid var(--plate-line);
    padding-block: 20px 26px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: .04em;
    color: rgba(237, 239, 234, .45);
}
.vi-footer-bottom a { color: inherit; }
.vi-footer-bottom a:hover { color: var(--phos-bright); }
.vi-footer-bottom p { display: flex; flex-wrap: wrap; gap: 4px 22px; }

/* ---------------- 回到顶部 ---------------- */

.vi-top {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 40;
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: .12em;
    color: var(--ink);
    background: var(--panel);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    padding: 9px 14px;
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
    transition: opacity .25s, transform .25s, background-color .15s;
}
.vi-top.show { opacity: 1; transform: none; pointer-events: auto; }
.vi-top:hover { background: var(--ink); color: var(--bg); }

/* ---------------- 入场显现 ---------------- */

.vi-rv {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity .65s cubic-bezier(.2, .7, .2, 1), transform .65s cubic-bezier(.2, .7, .2, 1);
}
.vi-rv.is-in { opacity: 1; transform: none; }

/* ---------------- 响应式 ---------------- */

@media (max-width: 1080px) {
    .vi-row {
        grid-template-columns: 56px 190px minmax(0, 1fr) 36px;
        grid-template-areas:
            "idx name  desc  go"
            ".   points points go";
    }
    .vi-row-idx   { grid-area: idx; }
    .vi-row-name  { grid-area: name; }
    .vi-row-desc  { grid-area: desc; }
    .vi-row-points { grid-area: points; margin-top: 8px; }
    .vi-row-go    { grid-area: go; }

    .vi-feats { grid-template-columns: 1fr; }
}

@media (max-width: 940px) {
    .vi-hero-grid {
        grid-template-columns: 1fr;
        gap: 44px;
    }
    .vi-crt { max-width: 640px; }
    .vi-topbar-inner { gap: 18px; }
    .vi-live { display: none; }
}

@media (max-width: 680px) {
    .vi-nav { display: none; }
    .vi-run { display: none; }
    .vi-topbar-status .vi-btn { padding: 7px 13px; font-size: 13px; }

    .vi-row {
        grid-template-columns: 48px 1fr 32px;
        grid-template-areas:
            "idx  name  go"
            "desc desc  go"
            "points points go";
        row-gap: 8px;
    }
    .vi-row-desc { font-size: 13.5px; }

    .vi-feat { grid-template-columns: 48px 1fr; }
    .vi-feat-tag { grid-column: 2; justify-self: start; margin-top: 4px; }

    .vi-news-row { grid-template-columns: 88px 1fr 24px; gap: 12px; }
    .vi-news-row .vi-news-title { font-size: 14px; white-space: normal; }

    .vi-footer-grid { grid-template-columns: 1fr 1fr; }
    .vi-fcol-brand { grid-column: 1 / -1; }

    .vi-sec-head { grid-template-columns: auto 1fr; }
    .vi-sec-more { display: none; }

    .vi-hud.br { display: none; }
    .vi-hud.bl { max-width: 60%; }
}

/* ---------------- 动效克制 ---------------- */

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .vi-rv { opacity: 1; transform: none; transition: none; }
    .vi-ticker-track { animation: none; overflow-x: auto; }
    .vi-live-dot { animation: none; }
    .vi-btn, .vi-row, .vi-news-row, .vi-sec-more .vi-ico, .vi-row-go, .vi-news-go {
        transition: none;
    }
}