:root {
  --ocean-950: #031319;
  --ocean-900: #06202a;
  --ocean-850: #082731;
  --ocean-800: #0b2f3b;
  --teal: #0f4a57;
  --aqua: #69c9c4;
  --aqua-bright: #8fe6df;
  --ivory: #f5e9d7;
  --action: #a3e5ee;
  --action-hover: #cff8fc;
  --silver: #b9cbd0;
  --text: #eef3f2;
  --muted: rgba(205, 222, 225, .74);
  --line: rgba(143, 214, 214, .22);
  --line-strong: rgba(143, 214, 214, .42);
  --glass: rgba(16, 52, 62, .42);
  --radius: 18px;
  --shell: 1290px;
  --font: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-en: "Manrope", "Avenir Next", "Helvetica Neue", "Segoe UI", sans-serif;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ocean-900);
  color: var(--text);
  font: 400 16px/1.7 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg, canvas { display: block; }
img { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--aqua-bright); outline-offset: 3px; border-radius: 8px; }

.skip { position: fixed; left: 16px; top: -60px; z-index: 100; padding: 10px 16px; border-radius: 10px; background: var(--ivory); color: var(--ocean-900); }
.skip:focus { top: 16px; }
.shell { width: min(var(--shell), calc(100% - 48px)); margin-inline: auto; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 54px; padding: 0 30px; border-radius: 999px;
  font-weight: 600; font-size: 15px; letter-spacing: .02em; white-space: nowrap;
  transition: transform .3s ease, background-color .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.btn svg { width: 18px; height: 18px; transition: transform .3s ease; }
.btn:hover svg { transform: translateX(3px); }
.btn-primary { background: var(--action); border: 1px solid rgba(224, 253, 255, .55); color: #07313e; box-shadow: inset 0 1px 0 rgba(255, 255, 255, .35), 0 8px 26px -12px rgba(83, 211, 236, .4); }
.btn-primary:hover { background: var(--action-hover); transform: translateY(-2px); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .55), 0 12px 30px -12px rgba(83, 211, 236, .55); }
.btn-glass { border: 1px solid rgba(163, 229, 238, .55); color: #e4f9fc; background: rgba(8, 36, 44, .28); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.btn-glass:hover { border-color: var(--action); background: rgba(163, 229, 238, .1); transform: translateY(-2px); }
.btn-sm { height: 44px; padding: 0 22px; font-size: 14px; }
.circle-btn {
  position: relative; z-index: 2; display: grid; place-items: center; flex: none;
  width: 40px; height: 40px; border-radius: 50%;
  border: 1.5px solid rgba(245, 233, 215, .75); color: var(--ivory);
  transition: background-color .3s ease, color .3s ease, transform .3s ease;
}
.circle-btn svg { width: 17px; height: 17px; }
.circle-btn:hover { background: var(--ivory); color: #10262d; }

/* ---------- header ---------- */
.site-header { position: fixed; inset: 16px 0 auto; z-index: 50; pointer-events: none; }
.nav-bar {
  pointer-events: auto;
  width: min(var(--shell), calc(100% - 32px)); margin-inline: auto; height: 68px;
  display: flex; align-items: center; gap: 24px; padding: 0 12px 0 28px;
  border-radius: 999px; border: 1px solid rgba(255, 255, 255, .14);
  background: linear-gradient(180deg, rgba(20, 58, 68, .5), rgba(8, 34, 42, .42));
  backdrop-filter: blur(20px) saturate(1.3); -webkit-backdrop-filter: blur(20px) saturate(1.3);
  box-shadow: 0 18px 50px -24px rgba(0, 0, 0, .6), inset 0 1px 0 rgba(255, 255, 255, .08);
  transition: background-color .3s ease, height .3s ease;
}
.site-header.scrolled .nav-bar { background: rgba(6, 30, 38, .78); }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 700; font-size: 18px; letter-spacing: .04em; color: #fff; }
.brand-mark { width: 34px; height: 24px; color: var(--ivory); }
#navigation { display: flex; gap: 44px; margin-inline: auto; font-size: 14.5px; }
#navigation a { position: relative; color: rgba(238, 243, 242, .82); padding: 6px 0; transition: color .25s ease; }
#navigation a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: -2px; height: 2px; border-radius: 2px; background: var(--ivory); transition: left .3s ease, right .3s ease; }
#navigation a:hover, #navigation a.active { color: #fff; }
#navigation a.active::after { left: 30%; right: 30%; }
.menu-toggle { display: none; }

/* ---------- hero ---------- */
.hero { position: relative; height: 100svh; min-height: 640px; max-height: 940px; overflow: hidden; background: var(--ocean-900); isolation: isolate; }
.hero-bg, #ocean-canvas, .hero-shade { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-bg { background: url(assets/v5/hero-underwater.webp) 62% 40% / cover no-repeat; }
.hero-bg.above { background-image: url(assets/v5/hero-above-clean.webp); }
#ocean-canvas { opacity: 0; transition: opacity .45s ease; cursor: grab; touch-action: pan-y; }
#ocean-canvas.ready { opacity: 1; }
#ocean-canvas.dragging { cursor: grabbing; }
.hero.has-gl .hero-bg { visibility: hidden; transition: visibility 0s .45s; }
.hero-shade {
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(4, 22, 29, .78) 0%, rgba(4, 22, 29, .45) 34%, rgba(4, 22, 29, 0) 62%),
    linear-gradient(180deg, rgba(4, 22, 29, 0) 62%, var(--ocean-900) 100%);
}
.hero-inner { position: relative; z-index: 2; height: 100%; display: flex; align-items: center; padding-top: 40px; pointer-events: none; }
.hero-copy { max-width: 820px; pointer-events: auto; }
.hero h1 { font-size: clamp(40px, 5.3vw, 76px); line-height: 1.26; font-weight: 700; letter-spacing: .01em; text-shadow: 0 6px 40px rgba(0, 0, 0, .35); }
.t-ivory { color: var(--ivory); }
.t-white { color: #fff; }
.t-grad { background: linear-gradient(92deg, #8fe6df 0%, #b9efe3 45%, #f5e9d7 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-copy > p { margin-top: 28px; font-size: 18px; line-height: 1.8; color: rgba(238, 243, 242, .86); }
.actions { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 40px; }
.hero-copy > * { animation: rise 1s cubic-bezier(.2, .7, .2, 1) both; }
.hero-copy > p { animation-delay: .12s; }
.hero-copy > .actions { animation-delay: .24s; }
@keyframes rise { from { opacity: 0; transform: translateY(26px); } }

.view-control {
  position: absolute; z-index: 3; right: max(24px, calc((100% - var(--shell)) / 2)); bottom: 40px;
  display: flex; gap: 4px; padding: 5px; border-radius: 999px;
  border: 1px solid rgba(245, 233, 215, .32); background: rgba(6, 30, 38, .42);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  /* 手机点击不出现灰色方块，长按不选中文字 / 不弹出菜单 */
  -webkit-tap-highlight-color: transparent; -webkit-user-select: none; user-select: none; -webkit-touch-callout: none;
}
.view-control button { -webkit-tap-highlight-color: transparent; }
.view-control button:focus { outline: none; }
.view-control button:focus-visible { outline: 2px solid var(--aqua-bright); outline-offset: 2px; border-radius: 999px; }
.view-control button { display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 22px; border: 0; border-radius: 999px; background: transparent; color: rgba(238, 243, 242, .85); font-size: 14px; cursor: pointer; transition: background-color .3s ease, color .3s ease; }
.view-control button[aria-pressed="true"] { background: var(--action); color: #07313e; font-weight: 600; }
.vc-play { width: 22px; height: 22px; border-radius: 50%; border: 1px solid currentColor; position: relative; }
.vc-play::after { content: ""; position: absolute; left: 8px; top: 6px; border-style: solid; border-width: 5px 0 5px 7px; border-color: transparent transparent transparent currentColor; }
.waterline {
  position: absolute; inset: 0; z-index: 1; pointer-events: none; opacity: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(190, 240, 236, .0) 38%, rgba(220, 250, 246, .55) 49%, rgba(120, 210, 210, .35) 51%, transparent 62%);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  mask-image: linear-gradient(180deg, transparent 30%, #000 45%, #000 55%, transparent 70%);
  -webkit-mask-image: linear-gradient(180deg, transparent 30%, #000 45%, #000 55%, transparent 70%);
}
.waterline.up { animation: sweep-up 1.5s cubic-bezier(.6, 0, .3, 1); }
.waterline.down { animation: sweep-down 1.5s cubic-bezier(.6, 0, .3, 1); }
@keyframes sweep-up { 0% { opacity: 0; transform: translateY(-60%); } 30%, 70% { opacity: 1; } 100% { opacity: 0; transform: translateY(60%); } }
@keyframes sweep-down { 0% { opacity: 0; transform: translateY(60%); } 30%, 70% { opacity: 1; } 100% { opacity: 0; transform: translateY(-60%); } }

/* ---------- sections ---------- */
.section { position: relative; padding: 110px 0 0; }
.kicker { font: 600 13px/1 var(--font-en); letter-spacing: .3em; color: var(--silver); text-transform: uppercase; }
h2 { text-wrap: balance; margin-top: 18px; font-size: clamp(30px, 3.1vw, 44px); line-height: 1.35; font-weight: 700; color: #f4f1ea; letter-spacing: .01em; }
.lead { margin-top: 26px; font-size: 16px; color: var(--muted); line-height: 1.9; }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 40px; }
.sec-head > p { max-width: 520px; font-size: 14.5px; line-height: 1.85; color: var(--muted); padding-bottom: 6px; }

.reveal { opacity: 0; transform: translateY(34px); transition: opacity .9s cubic-bezier(.2, .7, .2, 1), transform .9s cubic-bezier(.2, .7, .2, 1); transition-delay: var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- energy core ---------- */
.core { padding-top: 70px; padding-bottom: clamp(80px, 10.5vw, 150px); overflow: hidden; background: radial-gradient(60% 70% at 70% 50%, rgba(18, 82, 92, .35), transparent 70%), var(--ocean-900); }
.core::before { content: ""; position: absolute; inset: 0 0 auto; height: 120px; background: linear-gradient(180deg, var(--ocean-900), transparent); z-index: 1; pointer-events: none; }
.core-inner { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); align-items: center; gap: 20px; min-height: 520px; }
.orbit { position: relative; aspect-ratio: 720 / 460; width: 100%; }
.orbit-lines { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.orbit-lines path { fill: none; stroke: rgba(185, 235, 232, .55); stroke-width: 1; }
.orbit-lines circle { fill: #e9fffb; filter: drop-shadow(0 0 4px #8fe6df); }
.orb { position: absolute; left: 50%; top: 50%; width: 64%; aspect-ratio: 1; transform: translate(-50%, -50%); }
.orb-glow { position: absolute; inset: -18%; border-radius: 50%; background: radial-gradient(circle, rgba(105, 201, 196, .34) 0%, rgba(105, 201, 196, .1) 38%, transparent 66%); animation: breathe 5s ease-in-out infinite; }
.orb-img { position: absolute; inset: 0; width: 100%; height: 100%; mix-blend-mode: screen; border-radius: 50%; animation: breathe-img 5s ease-in-out infinite; -webkit-mask-image: radial-gradient(circle, #000 56%, transparent 71%); mask-image: radial-gradient(circle, #000 56%, transparent 71%); }
.orb canvas { position: absolute; inset: -30%; width: 160%; height: 160%; pointer-events: none; }
.orb-rings { position: absolute; inset: -6%; width: 112%; height: 112%; overflow: visible; }
.orb-rings circle { fill: none; transform-origin: 200px 200px; }
.orb-rings .r1 { stroke: rgba(185, 235, 232, .22); stroke-width: .8; }
.orb-rings .r2 { stroke: rgba(185, 235, 232, .38); stroke-width: .7; stroke-dasharray: 1 5; animation: spin 60s linear infinite; }
.orb-rings .r3 { stroke: rgba(245, 233, 215, .55); stroke-width: 1.1; stroke-dasharray: 120 40 6 40; animation: spin 26s linear infinite reverse; }
.orb-rings .r4 { stroke: rgba(143, 230, 223, .5); stroke-width: .8; stroke-dasharray: 2 9; animation: spin 40s linear infinite; }
.orb-fish { position: absolute; left: 50%; top: 51%; width: 44%; overflow: visible; transform: translate(-50%, -50%); filter: drop-shadow(0 3px 5px rgba(0, 22, 38, .65)) drop-shadow(0 0 9px rgba(103, 229, 255, .5)); animation: swim 6s ease-in-out infinite; }
.fish-scan { animation: fish-scan 6s ease-in-out infinite; }
.fish-nodes { animation: fish-signal 3s ease-in-out infinite; }
@keyframes fish-scan { 0%, 18% { x: -60px; opacity: 0; } 24% { opacity: .7; } 65%, 100% { x: 290px; opacity: 0; } }
@keyframes fish-signal { 50% { opacity: .35; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes breathe { 50% { transform: scale(1.06); opacity: .8; } }
@keyframes breathe-img { 50% { transform: scale(1.025); filter: brightness(1.12); } }
@keyframes swim { 50% { transform: translate(-46%, -54%) rotate(-3deg); } }
.orbit-labels li {
  position: absolute; left: var(--x); top: var(--y); transform: translate(-50%, -50%);
  display: inline-flex; align-items: center; gap: 8px; height: 44px; padding: 0 24px;
  border-radius: 999px; border: 1px solid rgba(220, 240, 238, .4);
  background: rgba(6, 30, 38, .55); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  font-size: 14px; font-weight: 600; letter-spacing: .04em; white-space: nowrap; color: #f3f6f5;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06);
  transition: border-color .3s ease, box-shadow .3s ease, transform .3s ease;
}
.orbit-labels li:hover { border-color: var(--ivory); box-shadow: 0 0 24px -4px rgba(143, 230, 223, .6); transform: translate(-50%, -50%) scale(1.04); }

/* ---------- services ---------- */
.service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.svc {
  position: relative; overflow: hidden; min-height: 250px; padding: 28px 28px 24px;
  border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--ocean-850);
  isolation: isolate;
  transition: border-color .4s ease, transform .4s ease, box-shadow .4s ease;
}
.svc::before { content: ""; position: absolute; inset: 0; z-index: -2; background: var(--img) 100% 50% / cover no-repeat; transition: transform 1s cubic-bezier(.2, .7, .2, 1); }
.svc::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(7, 33, 41, .97) 0%, rgba(7, 33, 41, .86) 38%, rgba(7, 33, 41, .25) 72%, rgba(7, 33, 41, 0) 100%), linear-gradient(180deg, rgba(255, 255, 255, .04), transparent 40%); }
.svc:hover { border-color: var(--line-strong); transform: translateY(-4px); box-shadow: 0 24px 50px -30px rgba(105, 201, 196, .5); }
.svc:hover::before { transform: scale(1.05); }
.svc-ico { width: 32px; height: 32px; fill: none; stroke: var(--ivory); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.svc h3 { margin-top: 22px; font-size: 20px; font-weight: 700; color: #f6f3ec; }
.svc p { margin-top: 10px; font-size: 13.5px; line-height: 1.8; color: var(--muted); }
.svc .circle-btn { position: absolute; right: 22px; bottom: 22px; }

/* ---------- cases ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.case { display: flex; flex-direction: column; overflow: hidden; border-radius: var(--radius); border: 1px solid var(--line); background: linear-gradient(180deg, rgba(15, 56, 66, .62), rgba(9, 38, 47, .62)); transition: border-color .4s ease, transform .4s ease, box-shadow .4s ease; }
.case:hover { border-color: var(--line-strong); transform: translateY(-4px); box-shadow: 0 24px 50px -30px rgba(105, 201, 196, .5); }
.case-img { position: relative; aspect-ratio: 16 / 9; overflow: hidden; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.12); clip-path: inset(0 0 100% 0); transition: clip-path 1.2s cubic-bezier(.7, 0, .2, 1), transform 1.6s cubic-bezier(.2, .7, .2, 1); }
.case.in .case-img img { clip-path: inset(0); transform: scale(1.01); }
.case:hover .case-img img { transform: scale(1.06); }
.case-body { display: flex; flex-direction: column; flex: 1; padding: 24px 24px 22px; }
.case h3 { font-size: 20px; font-weight: 700; color: #f6f3ec; }
.case p { margin-top: 10px; font-size: 13.5px; line-height: 1.8; color: var(--muted); }
.case-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 22px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags li { padding: 5px 14px; border-radius: 999px; border: 1px solid rgba(220, 240, 238, .3); background: rgba(255, 255, 255, .04); font-size: 12px; color: #e3ecea; }

/* ---------- process ---------- */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; counter-reset: s; }
.step { display: grid; grid-template-columns: 58px 1fr; gap: 18px; padding-right: 20px; }
.step-no { display: grid; place-items: center; width: 58px; height: 58px; border-radius: 50%; border: 1px solid var(--line-strong); background: rgba(10, 44, 54, .6); font: 600 18px/1 var(--font-en); color: var(--ivory); box-shadow: 0 0 0 6px rgba(105, 201, 196, .04); }
.step > div { position: relative; }
.step-ico { width: 30px; height: 30px; margin-top: 2px; fill: none; stroke: var(--ivory); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.step:not(:last-child) > div::after { content: ""; position: absolute; top: 17px; left: 46px; right: 0; height: 1px; background: linear-gradient(90deg, var(--line-strong), var(--line-strong)) 0 0 / 0% 100% no-repeat, rgba(143, 214, 214, .12); transition: background-size 1.2s ease; transition-delay: calc(var(--d, 0s) + .4s); }
.step.in > div::after { background-size: 100% 100%, auto; }
.step h3 { margin-top: 14px; font-size: 18px; font-weight: 700; color: #f6f3ec; }
.step p { margin-top: 8px; font-size: 13.5px; line-height: 1.8; color: var(--muted); }

/* ---------- contact ---------- */
.contact { position: relative; margin-top: 120px; padding: 120px 0 130px; text-align: center; overflow: hidden; isolation: isolate; }
.contact-bg { position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, var(--ocean-900) 0%, rgba(6, 32, 42, .2) 30%, rgba(6, 32, 42, .25) 75%, var(--ocean-950) 100%), url(assets/v5/contact-ocean.webp) center 70% / cover no-repeat; -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 34%); mask-image: linear-gradient(180deg, transparent 0%, #000 34%); }
.contact .kicker { color: var(--aqua); }
.contact h2 { font-size: clamp(28px, 2.6vw, 38px); }
.contact-inner > p:not(.kicker) { margin: 16px auto 0; max-width: 620px; font-size: 15px; line-height: 1.9; color: rgba(238, 243, 242, .8); }
.contact .btn { margin-top: 34px; }

/* ---------- footer ---------- */
.footer { background: var(--ocean-950); border-top: 1px solid rgba(143, 214, 214, .1); padding: 56px 0 28px; }
.footer-inner { display: grid; grid-template-columns: 1.3fr 1.2fr auto; gap: 48px; align-items: start; }
.footer-brand p { margin-top: 18px; max-width: 420px; font-size: 13.5px; line-height: 1.9; color: var(--muted); }
.footer-contact { display: grid; gap: 14px; font-style: normal; font-size: 15px; }
.footer-contact small { display: block; font-size: 12px; color: rgba(185, 203, 208, .6); letter-spacing: .1em; }
.footer-contact a:hover { color: var(--ivory); }
.footer-qr { display: flex; align-items: center; justify-self: start; gap: 20px; padding: 18px; border-radius: 20px; border: 1px solid var(--line); background: rgba(255, 255, 255, .03); font-size: 15px; line-height: 1.9; color: var(--text); }
.footer-qr img { flex: none; width: 144px; height: 144px; object-fit: cover; object-position: 50% 62%; border-radius: 12px; background: #fff; }
.footer-qr span { white-space: nowrap; }
.footer-bottom { display: flex; justify-content: space-between; margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(143, 214, 214, .08); font-size: 12.5px; color: rgba(185, 203, 208, .55); }
.footer-bottom a:hover { color: var(--ivory); }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  #navigation { gap: 26px; }
  .core-inner { grid-template-columns: 1fr; }
  .orbit { max-width: 760px; margin-inline: auto; margin-bottom: 70px; }
  .service-grid, .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 40px; }
  .step:nth-child(2) > div::after { display: none; }
}
@media (max-width: 768px) {
  .br-d { display: none; }
  .shell { width: calc(100% - 40px); }
  .site-header { inset: 10px 0 auto; }
  .nav-bar { height: 58px; padding: 0 8px 0 18px; gap: 10px; }
  .brand { font-size: 16px; }
  .brand-mark { width: 30px; height: 21px; }
  .header-cta { display: none; }
  .menu-toggle { display: grid; place-content: center; gap: 6px; margin-left: auto; width: 44px; height: 44px; border: 0; border-radius: 50%; background: rgba(245, 233, 215, .12); cursor: pointer; }
  .menu-toggle i { display: block; width: 18px; height: 1.6px; border-radius: 2px; background: var(--ivory); transition: transform .3s ease; }
  .menu-toggle[aria-expanded="true"] i:first-child { transform: translateY(3.8px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] i:last-child { transform: translateY(-3.8px) rotate(-45deg); }
  #navigation { position: absolute; top: 66px; left: 16px; right: 16px; flex-direction: column; gap: 0; padding: 10px 22px; border-radius: 22px; border: 1px solid rgba(255, 255, 255, .14); background: rgba(6, 30, 38, .94); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity .3s ease, transform .3s ease, visibility .3s; font-size: 16px; }
  #navigation.open { opacity: 1; visibility: visible; transform: none; }
  #navigation a { padding: 14px 0; border-bottom: 1px solid rgba(255, 255, 255, .07); }
  #navigation a:last-child { border: 0; }
  #navigation a::after { display: none; }

  .hero { height: 100svh; min-height: 600px; max-height: none; }
  .hero-bg { background-position: 70% 40%; }
  .hero-shade { background: linear-gradient(180deg, rgba(4, 22, 29, .78) 0%, rgba(4, 22, 29, .55) 40%, rgba(4, 22, 29, 0) 62%, rgba(4, 22, 29, 0) 80%, var(--ocean-900) 100%); }
  .hero-inner { align-items: flex-start; padding: 108px 0 0; }
  .hero h1 { font-size: min(8.6vw, 40px); line-height: 1.32; }
  .hero-copy > p { margin-top: 18px; font-size: 15px; }
  .actions { margin-top: 26px; gap: 12px; }
  .actions .btn { flex: 1; height: 50px; padding: 0 16px; }
  .view-control { left: 20px; right: 20px; bottom: 28px; justify-content: space-between; }
  .view-control button { flex: 1; justify-content: center; padding: 0 10px; }

  .section { padding-top: 80px; }
  .core { padding-top: 40px; }
  .core-inner { min-height: 0; gap: 28px; }
  .orbit { aspect-ratio: 1 / 1.05; }
  .orb { width: 70%; top: 50%; }
  .orbit-labels li { height: 34px; padding: 0 14px; font-size: 12px; }
  .orbit-labels li[data-side="l"] { left: calc(var(--x) + 3%); }
  .orbit-labels li[data-side="r"] { left: calc(var(--x) - 3%); }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 14px; margin-bottom: 28px; }
  .sec-head > p br { display: none; }
  .service-grid, .case-grid { grid-template-columns: 1fr; gap: 14px; }
  .svc { min-height: 220px; }
  .svc p br { display: none; }
  .svc p { max-width: 62%; }
  .steps { grid-template-columns: 1fr; row-gap: 0; }
  .step { grid-template-columns: 52px 1fr; padding: 0 0 34px; position: relative; }
  .step-no { width: 52px; height: 52px; font-size: 16px; }
  .step:not(:last-child)::before { content: ""; position: absolute; left: 26px; top: 60px; bottom: 6px; width: 1px; background: var(--line); }
  .step > div::after { display: none; }
  .step p br { display: none; }
  .contact { margin-top: 70px; padding: 90px 0 100px; }
  .footer-inner { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .case-img img { clip-path: none; transform: none; }
}