/* 官网首页样式（由 demo/redesign/index-v2.html 定稿迁入）。样例页仍用 style.css。 */
:root {
  --ink: #373734;
  --ink-2: #1C1D1B;
  --ink-3: #2A2B28;
  --orange: #E56031;
  --orange-hi: #FF8A5B;
  --orange-soft: #FCEDE6;
  --paper: #F6F3EE;
  --white: #fff;
  --muted: #6E6D68;
  --muted-d: #A3A099;
  --line: #E3DED6;
  --line-d: rgba(255,255,255,.1);
  --green: #3FB27F;
  --max: 1200px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", Menlo, Consolas, "Noto Sans Mono", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--white); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img, video, svg { display: block; max-width: 100%; }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; letter-spacing: -0.01em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.wrap { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
.mono { font-family: var(--mono); }


/* ---------- 通用 ---------- */
.section { padding: 112px 0; }
.section--paper { background: var(--paper); }
.section--dark { background: var(--ink-2); color: #EEEBE5; }
.tag { display: inline-flex; align-items: center; gap: 10px; font: 600 12px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--orange); }
.tag::before { content: ""; width: 8px; height: 8px; background: var(--orange); border-radius: 2px; }
.section--dark .tag { color: var(--orange-hi); }
.h2 { font-size: clamp(30px, 3.8vw, 46px); font-weight: 800; margin-top: 18px; }
.lead { font-size: 18px; color: var(--muted); margin-top: 18px; max-width: 720px; }
.section--dark .lead { color: var(--muted-d); }
.head { margin-bottom: 56px; display: flex; justify-content: space-between; align-items: end; gap: 40px; flex-wrap: wrap; }
.head > div { max-width: 760px; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 24px; border-radius: 999px; font-weight: 700; font-size: 15px; border: 1.5px solid transparent; transition: .15s; cursor: pointer; font-family: inherit; }
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--orange); color: #fff; }
.btn--primary:hover { background: #C84E22; }
.btn--line { border-color: rgba(255,255,255,.35); color: #fff; }
.btn--line:hover { background: #fff; color: var(--ink); }
.btn--dark { border-color: var(--ink); color: var(--ink); }
.btn--dark:hover { background: var(--ink); color: #fff; }

/* ---------- 导航 ---------- */
.nav { position: fixed; inset: 0 0 auto; z-index: 50; transition: background .2s, border-color .2s; border-bottom: 1px solid transparent; }
.nav.is-solid { background: rgba(28,29,27,.92); backdrop-filter: blur(12px); border-color: var(--line-d); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.nav__logo { display: inline-flex; align-items: center; gap: 10px; }
.nav__logo img { height: 34px; width: auto; }
.nav__logo span { font-size: 20px; font-weight: 700; letter-spacing: -.01em; color: #fff; }
.nav__links { display: flex; gap: 30px; font-size: 15px; color: rgba(255,255,255,.78); }
.nav__links a:hover { color: #fff; }
.nav__right { display: flex; align-items: center; gap: 18px; color: rgba(255,255,255,.7); font-size: 14px; }
.nav__right .btn { padding: 10px 18px; font-size: 14px; }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; color: #fff; display: flex; align-items: flex-end; overflow: hidden; background: #000; }
.hero__reel { position: absolute; inset: 0; }
.hero__reel video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transform: scale(1.04); transition: opacity 1.2s ease, transform 7s linear; }
.hero__reel video.is-on { opacity: 1; transform: scale(1); }
.hero::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, rgba(11,12,10,.88) 0%, rgba(11,12,10,.5) 45%, rgba(11,12,10,.15) 75%), linear-gradient(180deg, rgba(11,12,10,.55) 0%, rgba(11,12,10,0) 25%, rgba(11,12,10,0) 60%, rgba(11,12,10,.9) 100%); }
.hud, .hero__body, .reel__bar { z-index: 2; }
.reel__bar { position: absolute; right: 32px; bottom: 70px; display: flex; gap: 8px; z-index: 3; }
/* 可点区域 24px 高，视觉上仍是 3px 细线 */
.reel__bar button { width: 44px; height: 24px; border: 0; padding: 0; background: none; cursor: pointer; position: relative; }
.reel__bar button::before, .reel__bar button::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 3px; margin-top: -1.5px; border-radius: 2px; }
.reel__bar button::before { background: rgba(255,255,255,.28); transition: background .2s; }
.reel__bar button:hover::before { background: rgba(255,255,255,.6); }
.reel__bar button::after { background: var(--orange-hi); transform: scaleX(0); transform-origin: left; }
.reel__bar button.is-on::after { animation: reelfill var(--d, 6s) linear forwards; }
@keyframes reelfill { to { transform: scaleX(1); } }
.hud b { color: var(--orange-hi); font-weight: 600; }
.hud { position: absolute; inset: 96px 32px auto; display: flex; justify-content: space-between; font: 500 12px/1.6 var(--mono); color: rgba(255,255,255,.85); letter-spacing: .06em; pointer-events: none; }
.hud__rec { display: inline-flex; align-items: center; gap: 8px; }
.hud__rec i { width: 9px; height: 9px; border-radius: 50%; background: #3FB27F; animation: blink 1.2s infinite; }
@keyframes blink { 50% { opacity: .2; } }
.hud__r { text-align: right; }
.hero__body { position: relative; padding: 0 0 72px; width: 100%; }
.hero__kicker { font: 600 13px/1 var(--mono); letter-spacing: .16em; color: var(--orange-hi); text-transform: uppercase; }
.hero h1 { font-size: clamp(36px, 5vw, 72px); font-weight: 800; margin-top: 22px; line-height: 1.12; letter-spacing: -0.02em; }
.hero h1 em { font-style: normal; color: var(--orange-hi); }
.hero__lead { font-size: clamp(16px, 1.5vw, 19px); color: rgba(255,255,255,.82); margin-top: 24px; max-width: 640px; }
.hero__cta { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }


/* ---------- 场景 ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.filters button { font: 600 14px/1 var(--font); padding: 11px 18px; border-radius: 999px; border: 1.5px solid var(--line); background: #fff; color: var(--ink); cursor: pointer; transition: .15s; }
.filters button span { font-family: var(--mono); color: var(--muted); margin-left: 6px; font-size: 12px; }
.filters button.is-on { background: var(--ink); color: #fff; border-color: var(--ink); }
.filters button.is-on span { color: var(--orange-hi); }
.scenes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.scene { position: relative; border-radius: 14px; overflow: hidden; background: var(--ink-3); color: #fff; min-height: 240px; display: flex; flex-direction: column; justify-content: flex-end; transition: transform .2s, opacity .2s; }
.scene:hover { transform: translateY(-3px); }
.scene.is-hidden { display: none; }
.scene--wide { grid-column: span 2; }
.scene--tall { grid-row: span 2; }
.scene img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.scene::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,0) 30%, rgba(0,0,0,.82)); }
.scene--text::after { display: none; }
.scene--text { background: var(--ink-3) radial-gradient(circle at 85% 15%, rgba(229,96,49,.28), transparent 55%); padding-top: 64px; }
.scene__body { position: relative; z-index: 1; padding: 20px 22px; }
.scene__cat { font: 600 11px/1 var(--mono); letter-spacing: .12em; color: var(--orange-hi); text-transform: uppercase; }
.scene h3 { font-size: 21px; font-weight: 800; margin-top: 10px; }
.scene p { font-size: 13.5px; color: rgba(255,255,255,.78); margin-top: 6px; }
.scene__ico { position: absolute; top: 20px; left: 22px; z-index: 1; width: 40px; height: 40px; border-radius: 10px; background: rgba(255,255,255,.08); display: grid; place-items: center; }
.scene__ico svg { width: 22px; height: 22px; stroke: var(--orange-hi); }
.scene__live { position: absolute; top: 16px; right: 16px; z-index: 1; font: 600 10.5px/1 var(--mono); background: rgba(0,0,0,.55); padding: 6px 9px; border-radius: 5px; letter-spacing: .08em; display: inline-flex; gap: 6px; align-items: center; }
.scene__live i { width: 6px; height: 6px; background: var(--green); border-radius: 50%; }
.scene--more { background: transparent; border: 1.5px dashed rgba(55,55,52,.28); }
.scene--more::after { display: none; }
.scene--more .btn--line-dark { margin-top: 18px; border: 1.5px solid var(--ink); color: var(--ink); background: transparent; }
.scene--more .btn--line-dark:hover { background: var(--ink); color: #fff; }
.scene--more .scene__body { color: var(--ink); }
.scene--more .scene__cat { color: var(--muted); }
.scene--more h3 { font-size: 26px; color: var(--ink); }
.scene--more h3 b { color: var(--orange); font-weight: 600; margin-right: 4px; }
.scene--more p { color: var(--muted); }


/* ---------- 实操 ---------- */
.ops { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.steps { position: relative; }
.steps::before { content: ""; position: absolute; left: 19px; top: 8px; bottom: 8px; width: 2px; background: var(--line-d); }
.step { position: relative; display: grid; grid-template-columns: 40px 1fr; gap: 20px; padding-bottom: 30px; }
.step:last-child { padding-bottom: 0; }
.step__n { width: 40px; height: 40px; border-radius: 50%; background: var(--ink-3); border: 2px solid var(--orange); display: grid; place-items: center; font: 700 13px/1 var(--mono); color: var(--orange-hi); position: relative; z-index: 1; }
.step h3 { font-size: 19px; font-weight: 700; padding-top: 6px; }
.step p { font-size: 15px; color: var(--muted-d); margin-top: 6px; }
.step ul { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px; }
.step li { font: 12px/1 var(--mono); padding: 6px 9px; border-radius: 5px; background: rgba(255,255,255,.06); color: #D9D5CE; }

.card-sop { position: sticky; top: 96px; background: #F7F4EE; color: var(--ink); border-radius: 16px; overflow: hidden; box-shadow: 0 30px 60px rgba(0,0,0,.35); }
.sop__head { background: var(--ink); color: #fff; padding: 18px 24px; display: flex; justify-content: space-between; align-items: center; font: 600 12px/1.4 var(--mono); letter-spacing: .06em; }
.sop__head b { color: var(--orange-hi); }
.sop__body { padding: 24px; }
.sop__title { font-size: 20px; font-weight: 800; }
.sop__meta { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 14px; padding: 12px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sop__meta div { padding: 0 14px; border-left: 1px solid var(--line); }
.sop__meta div:first-child { padding-left: 0; border-left: 0; }
.sop__meta span { display: block; font: 11px/1 var(--mono); color: var(--muted); letter-spacing: .06em; }
.sop__meta b { display: block; font-size: 14px; margin-top: 6px; }
.sop__sec { margin-top: 20px; font: 600 11px/1 var(--mono); letter-spacing: .12em; color: var(--muted); text-transform: uppercase; }
.sop__list { margin-top: 10px; counter-reset: s; }
.sop__list li { counter-increment: s; display: grid; grid-template-columns: 26px 1fr; gap: 10px; font-size: 14.5px; padding: 8px 0; border-bottom: 1px dashed var(--line); }
.sop__list li::before { content: counter(s, decimal-leading-zero); font: 600 12px/1.9 var(--mono); color: var(--orange); }
.checks { margin-top: 10px; display: grid; gap: 8px; }
.checks li { display: flex; gap: 10px; font-size: 14px; align-items: flex-start; }
.checks li::before { content: "✓"; flex: none; width: 18px; height: 18px; border-radius: 4px; background: var(--green); color: #fff; font-size: 12px; display: grid; place-items: center; margin-top: 3px; }
.checks li.x::before { content: "×"; background: #D9483B; }
.sop__foot { display: flex; justify-content: space-between; margin-top: 20px; padding-top: 14px; border-top: 1px solid var(--line); font: 12px/1.4 var(--mono); color: var(--muted); }

/* ---------- 样片 ---------- */
.player { margin: 0; border-radius: 16px; overflow: hidden; background: #000; position: relative; }
.player video { width: 100%; aspect-ratio: 32 / 9; object-fit: cover; cursor: pointer; }
.player__tags { position: absolute; inset: 14px 14px auto; display: flex; justify-content: space-between; pointer-events: none; }
.player__tags span { font: 600 11px/1 var(--mono); background: rgba(0,0,0,.6); color: #fff; padding: 6px 9px; border-radius: 5px; letter-spacing: .08em; }
.player__mid { position: absolute; top: 0; bottom: 0; left: 50%; width: 1px; background: rgba(255,255,255,.35); pointer-events: none; }
.player__sound { position: absolute; right: 14px; bottom: 14px; font: 600 12px/1 var(--mono); background: rgba(0,0,0,.6); color: #fff; padding: 9px 12px; border-radius: 6px; border: 0; cursor: pointer; }

/* 数据轨道：与样片同步的播放头 */
.tracks { margin-top: 18px; background: var(--ink-2); border-radius: 16px; padding: 22px 24px; color: #DAD6CF; font-family: var(--mono); font-size: 12px; position: relative; }
.tracks__top { display: flex; justify-content: space-between; color: var(--muted-d); margin-bottom: 30px; flex-wrap: wrap; gap: 8px; }
.tracks__top b { color: #fff; font-weight: 600; }
.track { display: grid; grid-template-columns: 210px 1fr 90px; gap: 14px; align-items: center; height: 30px; }
.track__name { color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.track__bar { height: 14px; border-radius: 3px; position: relative; overflow: hidden; }
.track__hz { text-align: right; color: var(--muted-d); }
.bar--cam { background: repeating-linear-gradient(90deg, #E56031 0 2px, rgba(229,96,49,.25) 2px 6px); }
.bar--imu { background: repeating-linear-gradient(90deg, #3FB27F 0 1px, rgba(63,178,127,.2) 1px 2px); }
.bar--aud svg { width: 100%; height: 14px; }
.bar--meta { background: repeating-linear-gradient(90deg, #8A8780 0 2px, transparent 2px 40px); }
.tracks__lane { position: relative; }
.playhead { position: absolute; top: 62px; bottom: 18px; width: 2px; background: #fff; box-shadow: 0 0 0 3px rgba(255,255,255,.12); pointer-events: none; }
.playhead::before { content: attr(data-t); position: absolute; top: -20px; left: 50%; transform: translateX(-50%); background: #fff; color: #000; padding: 2px 6px; border-radius: 3px; font-size: 11px; white-space: nowrap; }

.specs { margin-top: 40px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.specs div { background: #fff; padding: 22px; }
.specs span { font: 600 11px/1 var(--mono); color: var(--muted); letter-spacing: .1em; text-transform: uppercase; }
.specs b { display: block; font: 700 22px/1.2 var(--mono); margin-top: 10px; }
.specs p { font-size: 13.5px; color: var(--muted); margin-top: 6px; }
.dl { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; align-items: center; }
.dl small { color: var(--muted); font-size: 13px; }

/* ---------- 保证 ---------- */
.promises { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.promise { border: 1px solid var(--line-d); border-radius: 14px; padding: 28px; background: rgba(255,255,255,.02); }
.promise__k { font: 700 13px/1 var(--mono); color: var(--orange-hi); letter-spacing: .08em; }
.promise h3 { font-size: 20px; margin-top: 16px; font-weight: 700; }
.promise p { font-size: 14.5px; color: var(--muted-d); margin-top: 10px; }
.promise--hi { background: var(--orange); border-color: var(--orange); }
.promise--hi .promise__k, .promise--hi p { color: rgba(255,255,255,.88); }

/* ---------- 合作 ---------- */
.path { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.path__item { padding: 32px; border-left: 1px solid var(--line); position: relative; background: #fff; }
.path__item:first-child { border-left: 0; }
.path__step { font: 600 12px/1 var(--mono); color: var(--orange); letter-spacing: .1em; }
.path__item h3 { font-size: 24px; font-weight: 800; margin-top: 14px; }
.path__item > p { color: var(--muted); font-size: 15px; margin-top: 8px; min-height: 50px; }
.path__item ul { margin-top: 18px; display: grid; gap: 8px; font-size: 14.5px; }
.path__item li::before { content: "— "; color: var(--orange); }
.path__arrow { position: absolute; right: -14px; top: 34px; width: 28px; height: 28px; border-radius: 50%; background: var(--ink); color: #fff; display: grid; place-items: center; font-size: 14px; z-index: 2; }

/* ---------- FAQ + 联系 ---------- */
.faq { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; margin-top: 8px; }
.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq summary { font-weight: 700; font-size: 16px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::after { content: "+"; font-family: var(--mono); color: var(--orange); font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq p { color: var(--muted); font-size: 15px; margin-top: 10px; }

.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; }
.contact h2 { font-size: clamp(32px, 4vw, 52px); font-weight: 800; }
.contact__info { margin-top: 32px; display: grid; gap: 14px; font-size: 15px; color: #D5D1CA; }
.contact__info b { display: inline-block; width: 56px; color: var(--muted-d); font-weight: 500; }
.form { background: #fff; color: var(--ink); border-radius: 16px; padding: 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: grid; gap: 6px; font-size: 13px; font-weight: 600; }
.form label.full { grid-column: 1 / -1; }
.form input, .form textarea { font: 15px var(--font); padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 10px; background: var(--paper); }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--orange); background: #fff; }
.form textarea { min-height: 110px; resize: vertical; }
.form .btn { grid-column: 1 / -1; justify-content: center; }
.form small { grid-column: 1 / -1; color: var(--muted); font-size: 12px; }

.footer { background: #121311; color: var(--muted-d); padding: 40px 0; font-size: 13px; }
.footer__inner { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.footer img { height: 24px; filter: brightness(0) invert(1); opacity: .8; }


.scene video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.dir { margin-top: 16px; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 28px; }
.dir__head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.dir__head h3 { font-size: 20px; font-weight: 800; }
.grow { display: inline-flex; gap: 8px; align-items: center; margin-top: 18px; font: 600 12px/1 var(--mono); color: var(--green); }
.grow i { width: 7px; height: 7px; border-radius: 50%; background: var(--green); animation: blink 1.6s infinite; }
.dir__head span { font-size: 12px; color: var(--muted); }
.dir__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 28px; }
.dir__row { display: grid; align-content: start; grid-template-columns: 1fr auto; gap: 4px 12px; padding: 12px 0; border-top: 1px dashed var(--line); }
.dir__row b { font-size: 15px; }
.dir__row em { font-style: normal; font: 12px/1.9 var(--mono); color: var(--muted); text-align: right; white-space: nowrap; }
.dir__row p { grid-column: 1 / -1; font-size: 13px; color: var(--muted); line-height: 1.6; }
.dir__row.is-os em { color: var(--orange); }
.dir__row.is-cut { display: none; }
.dir.is-all .dir__row.is-cut { display: grid; }

@media (max-width: 1080px) { .dir__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 720px) { .dir__grid { grid-template-columns: 1fr; } }


.dir__filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 6px; }
.dir__filters button { font: 600 14px/1 var(--font); padding: 9px 14px; border-radius: 999px; border: 1.5px solid var(--line); background: var(--paper); color: var(--ink); cursor: pointer; }
.dir__filters button span { font-family: var(--mono); color: var(--orange); margin-left: 6px; font-size: 12px; }
.dir__filters button.is-os { border-style: dashed; }
.dir__filters button.is-os1 { margin-left: 14px; }
.dir__filters button.is-on { background: var(--ink); border-color: var(--ink); color: #fff; }
.dir__filters button.is-on span { color: var(--orange-hi); }
.dir__row { position: relative; cursor: default; outline: none; }
.dir__row:hover b, .dir__row:focus b { color: var(--orange); }
.dir__cam { font: 500 11px/1 var(--mono); font-style: normal; color: var(--muted); background: var(--paper); border-radius: 4px; padding: 3px 6px; margin-left: 8px; vertical-align: 2px; }
.dir__pop { position: absolute; z-index: 20; left: -10px; right: -10px; bottom: calc(100% - 6px); display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; padding: 6px; background: var(--ink-2); border-radius: 10px; box-shadow: 0 18px 40px rgba(0,0,0,.28); opacity: 0; visibility: hidden; transform: translateY(6px); transition: .18s; pointer-events: none; }
.dir__pop img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; border-radius: 6px; background: #333; }
.dir__pop--empty { display: block; color: var(--muted-d); font-size: 13px; padding: 12px 14px; }
.dir__row:hover .dir__pop, .dir__row:focus .dir__pop, .dir__row.is-open .dir__pop { opacity: 1; visibility: visible; transform: none; }
.dir__foot { display: flex; align-items: center; gap: 18px; margin-top: 18px; }
.dir__foot .grow { margin-top: 0; }
.dir.is-all .dir__more { display: none; }
@media (max-width: 720px) { .dir__pop { position: static; margin-top: 8px; display: none; grid-column: 1 / -1; opacity: 1; visibility: visible; transform: none; } .dir__row.is-open .dir__pop { display: grid; } .dir__pop--empty { display: none; } }

/* 进场动画 */
.rv { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.rv.is-in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .nav__links { display: none; }
  .scenes { grid-template-columns: repeat(2, 1fr); }
  .ops, .contact { grid-template-columns: 1fr; }
  .card-sop { position: static; }
  .specs { grid-template-columns: repeat(2, 1fr); }
  .promises { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .section { padding: 80px 0; }
  .hud { inset: 84px 20px auto; }
  .reel__bar { right: 20px; bottom: 18px; }
  .scenes { grid-template-columns: 1fr; }
  .scene--wide { grid-column: auto; } .scene--tall { grid-row: auto; }
  .promises, .path, .faq, .form, .sop__meta { grid-template-columns: 1fr; }
  .path__item { border-left: 0; border-top: 1px solid var(--line); }
  .path__arrow { display: none; }
  .track { grid-template-columns: 110px 1fr; }
  .track__hz { display: none; }
  .nav__right .lang { display: none; }
}

/* ===== 版本 B：分栏首屏 ===== */
.hero--split { align-items: center; background: radial-gradient(ellipse at 78% 45%, #2A1A12 0%, #141513 50%, #0B0C0A 100%); }
.hero--split::after { background: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px) 0 0 / 56px 56px, linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px) 0 0 / 56px 56px; -webkit-mask: radial-gradient(ellipse at 70% 50%, #000 0%, transparent 75%); mask: radial-gradient(ellipse at 70% 50%, #000 0%, transparent 75%); }
.hero__grid { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 64px; align-items: center; padding: 120px 0 72px; }
.hero--split h1 { font-size: clamp(34px, 4.2vw, 64px); }
.hero__phone { position: relative; margin: 0; height: min(72vh, 700px); aspect-ratio: 9 / 16; border-radius: 28px; overflow: hidden; background: #000; border: 1px solid rgba(255,255,255,.14); box-shadow: 0 40px 100px -20px rgba(0,0,0,.8), 0 0 0 8px rgba(255,255,255,.03), 0 0 120px -30px rgba(229,96,49,.45); }
.hero__phone .hero__reel { position: absolute; inset: 0; }
.hero__phone { touch-action: pan-y; }
.hero__phone::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(180deg, rgba(0,0,0,.45) 0%, rgba(0,0,0,0) 18%, rgba(0,0,0,0) 70%, rgba(0,0,0,.75) 100%); }
.phone__rec { position: absolute; top: 18px; left: 18px; z-index: 2; display: inline-flex; align-items: center; gap: 8px; font: 500 11px/1 var(--mono); letter-spacing: .08em; color: rgba(255,255,255,.9); background: rgba(0,0,0,.4); padding: 7px 10px; border-radius: 999px; backdrop-filter: blur(6px); }
.phone__rec i { width: 8px; height: 8px; border-radius: 50%; background: #3FB27F; animation: blink 1.2s infinite; }
.phone__foot { position: absolute; left: 18px; right: 18px; bottom: 14px; z-index: 3; font-size: 14px; font-weight: 600; color: #fff; }
.hero--split .reel__bar { position: static; margin-top: 6px; gap: 6px; }
.hero--split .reel__bar button { flex: 1; width: auto; }
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; padding: 110px 0 56px; }
  .hero__phone { height: auto; width: min(100%, 360px); margin: 0 auto; }
}

/* ===== 版本 B：目标客户条 + 数据流箭头 ===== */
.flow { position: relative; background: radial-gradient(ellipse at 80% 40%, #2A1A12 0%, #141513 45%, #0B0C0A 100%); overflow: hidden; }
.flow::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: url(home/world.svg) 58% 42% / 112% auto no-repeat; opacity: .9; -webkit-mask: radial-gradient(ellipse 75% 70% at 60% 45%, #000 40%, transparent 100%); mask: radial-gradient(ellipse 75% 70% at 60% 45%, #000 40%, transparent 100%); }
.flow .hero--split { background: transparent; }
.flow .hero--split::after { display: none; }
.hero--split { min-height: 0; }
.hero--split .hero__grid { padding: 96px 0 16px; }
.hero--split .hero__phone { height: min(54vh, 580px); }
.clients { position: relative; z-index: 2; padding: 72px 0 36px; color: #fff; }
.clients__label { font-size: 13px; color: var(--muted-d); margin-top: 16px; display: flex; align-items: center; gap: 12px; }
.clients__label span { font: 600 12px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--orange-hi); }
.clients__row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.client { position: relative; padding: 18px 16px 18px 14px; white-space: nowrap; border-radius: 14px; background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02)); border: 1px solid rgba(255,255,255,.1); transition: border-color .3s, box-shadow .3s; }
.client.is-hit { border-color: rgba(255,138,91,.45); box-shadow: 0 10px 36px -14px rgba(229,96,49,.5); }
.clients__wrap { width: min(1320px, calc(100% - 48px)); }
.client { display: grid; grid-template-columns: 46px 1fr; column-gap: 14px; align-items: center; }
.client__ic { grid-row: 1 / span 2; width: 46px; height: 46px; object-fit: contain; opacity: .95; }
.client b { display: block; font-size: 16px; font-weight: 700; }
.client em { display: block; font-style: normal; font-size: 13px; color: rgba(255,255,255,.7); margin-top: 4px; align-self: start; }
.client b { align-self: end; }
.client i { display: block; font: 500 11px/1.4 var(--mono); font-style: normal; color: var(--orange-hi); margin-top: 12px; letter-spacing: .04em; }
.flow__fx { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 3; overflow: visible; }
.flow__fx .base { fill: none; stroke: url(#fg); stroke-width: 1; opacity: .22; }
.flow__fx .pulse { fill: none; stroke: #FF9B73; stroke-width: 1.6; stroke-linecap: round; opacity: .55; filter: url(#glow); }
@media (max-width: 1000px) { .clients__row { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 900px) { .flow__fx { display: none; } .clients { padding-top: 24px; } }
@media (max-width: 560px) { .clients__row { grid-template-columns: repeat(2, 1fr); } .client { white-space: normal; grid-template-columns: 1fr; padding: 14px; } .client__ic { grid-row: auto; width: 34px; height: 34px; margin-bottom: 8px; } .client b { font-size: 15px; } .client em { font-size: 12px; } }

/* ===== 联系我们弹窗 ===== */
.leadm { width: min(640px, calc(100% - 32px)); max-height: calc(100vh - 32px); border: 0; border-radius: 20px; padding: 32px; background: #fff; color: var(--ink); box-shadow: 0 30px 80px rgba(0,0,0,.45); }
.leadm::backdrop { background: rgba(10,10,9,.6); backdrop-filter: blur(4px); }
.leadm[open] { animation: leadin .25s ease; }
@keyframes leadin { from { opacity: 0; transform: translateY(12px) scale(.98); } }
.leadm h3 { font-size: 24px; margin-top: 12px; }
#lead-title { margin-top: 0; padding-right: 48px; }
.lead__sub { color: var(--muted); font-size: 14px; margin-top: 6px; }
.lead__x { position: absolute; top: 14px; right: 16px; width: 36px; height: 36px; border: 0; border-radius: 50%; background: var(--paper); font-size: 22px; line-height: 1; cursor: pointer; color: var(--ink); }
.lead__x:hover { background: var(--orange-soft); }
.lead__form { padding: 0; margin-top: 20px; border-radius: 0; }
.form__trap { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form__status { grid-column: 1 / -1; font-size: 14px; padding: 10px 12px; border-radius: 10px; margin: 0; }
.form__status.is-ok { background: #E8F6EE; color: #1E7A4C; }
.form__status.is-err { background: #FDECEA; color: #B3261E; }
@media (max-width: 560px) { .leadm { padding: 24px 18px; } .lead__form { grid-template-columns: 1fr; } }

.h2 .hl { font-style: normal; color: var(--orange); white-space: nowrap; }

/* ===== 本轮：标题一行、参数入口、完整参数弹窗、页脚 logo ===== */
.contact .h2--contact { font-size: clamp(28px, 3vw, 46px); }
.h2--contact span { white-space: nowrap; }
@media (max-width:600px){ .h2--contact span{ white-space:normal; } }
.h2--line { font-size: clamp(22px, 2.75vw, 42px); white-space: nowrap; }
@media (max-width: 900px) { .h2--line { white-space: normal; } }
.specs__more { display: flex; width: 100%; justify-content: center; align-items: center; gap: 8px; margin-top: -1px; padding: 14px; border: 1px solid var(--line); border-top: 0; border-radius: 0 0 14px 14px; background: #fff; font: 600 14px var(--font); color: var(--ink); cursor: pointer; transition: color .2s, background .2s; }
.specs__more:hover { color: var(--orange); background: var(--paper); }
.specs__more span { transition: transform .2s; } .specs__more:hover span { transform: translateX(3px); }
#sample .specs { border-radius: 14px 14px 0 0; }
.linkbtn { border: 0; background: none; padding: 0; font: inherit; color: var(--orange); font-weight: 600; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.specm { width: min(820px, calc(100% - 32px)); }
.specm .spec { margin-top: 20px; border-top: 1px solid var(--line); }
.specm .spec__row { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.specm .spec__row b { font-weight: 700; }
.specm .spec__row p { color: var(--ink-2, #4a4a46); margin: 0; line-height: 1.7; }
.specm code { font: 12.5px var(--mono); background: var(--paper); padding: 1px 6px; border-radius: 5px; }
@media (max-width: 560px) { .specm .spec__row { grid-template-columns: 1fr; gap: 4px; } }
.footer__logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; }
.footer__logo img { height: 28px; width: auto; filter: none; opacity: 1; }
.footer__logo b { font-size: 16px; font-weight: 700; }
#scenes .head { display: block; } .head > div { max-width: none; }

/* ===== 英文页：英文更长，取消强制单行 ===== */
html[lang="en"] .h2--line, html[lang="en"] .h2--contact span, html[lang="en"] .client { white-space: normal; }
html[lang="en"] .client b { font-size: 15px; line-height: 1.3; }
.nav__right .lang a { color: rgba(255,255,255,.6); }
.nav__right .lang a.is-on, .nav__right .lang a:hover { color: #fff; }


/* 手机端兜底：任何元素都不能把页面撑出横向滚动 */
html, body { overflow-x: clip; }
.form, .form input, .form textarea { min-width: 0; max-width: 100%; }
@media (max-width: 560px) { .form { padding: 22px 18px; } .nav__logo span { font-size: 18px; } .nav__right .btn { padding: 9px 14px; } }