@import url("https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=LXGW+WenKai+TC:wght@300;400;700&family=Noto+Sans+TC:wght@400;500;700&family=Space+Mono:wght@400;700&display=swap");

:root {
  --ink-950: #0c0a10;
  --ink-900: #110d16;
  --ink-850: #17121f;
  --ink-800: #1e1826;
  --ink-750: #262031;
  --ink-700: #322a40;
  --ink-600: #443a55;
  --violet-50: #f3efff;
  --violet-100: #e6ddff;
  --violet-200: #cdbaff;
  --violet-300: #b199ff;
  --violet-400: #957bf6;
  --violet-500: #7b5bf2;
  --violet-600: #6642e0;
  --violet-700: #5433bd;
  --violet-800: #422a92;
  --violet-900: #2c1d63;
  --coral-100: #ffe6e3;
  --coral-200: #ffc9c4;
  --coral-300: #ffa8a2;
  --coral-400: #ff8b83;
  --coral-500: #ff7a7f;
  --coral-600: #ef5f6c;
  --coral-700: #cf4757;
  --teal-300: #7ff0e6;
  --teal-400: #46dcd2;
  --teal-500: #2ec9c2;
  --teal-600: #1fa39e;
  --paper: #f6f2ef;
  --mist-300: #d9d2dd;
  --mist-400: #b6adc0;
  --mist-500: #8f8699;
  --mist-600: #8a8295;
  --bg: var(--ink-950);
  --bg-elevated: var(--ink-900);
  --surface: var(--ink-850);
  --surface-2: var(--ink-800);
  --surface-3: var(--ink-750);
  --border: color-mix(in oklch, var(--ink-700) 80%, transparent);
  --border-strong: var(--ink-600);
  --border-accent: color-mix(in oklch, var(--violet-500) 45%, transparent);
  --text-strong: var(--paper);
  --text: var(--mist-300);
  --text-muted: var(--mist-500);
  --text-faint: var(--mist-600);
  --accent: var(--violet-500);
  --accent-hover: var(--violet-400);
  --accent-press: var(--violet-600);
  --accent-soft: color-mix(in oklch, var(--violet-500) 16%, var(--ink-900));
  --on-accent: #ffffff;
  --glow: var(--coral-500);
  --glow-soft: color-mix(in oklch, var(--coral-500) 20%, var(--ink-900));
  --detail: var(--teal-400);
  --focus-ring: color-mix(in oklch, var(--violet-400) 70%, transparent);
  --sunset-glow: radial-gradient(60% 60% at 62% 42%, color-mix(in oklch, var(--coral-500) 62%, transparent) 0%, color-mix(in oklch, var(--coral-400) 30%, transparent) 34%, transparent 68%);
  --font-hand: "LXGW WenKai TC", "Noto Serif TC", serif;
  --font-serif: "Instrument Serif", "LXGW WenKai TC", Georgia, serif;
  --font-sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: "Space Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --font-display: var(--font-hand);
  --font-body: var(--font-sans);
  --font-ui: var(--font-sans);
  --fs-hero: clamp(2.75rem, 1.6rem + 5.6vw, 5.25rem);
  --fs-display: clamp(2.25rem, 1.5rem + 3.4vw, 3.75rem);
  --fs-h1: clamp(1.9rem, 1.4rem + 2.2vw, 2.85rem);
  --fs-h2: clamp(1.5rem, 1.2rem + 1.4vw, 2.1rem);
  --fs-h3: clamp(1.25rem, 1.1rem + 0.7vw, 1.55rem);
  --fs-lead: clamp(1.075rem, 1rem + 0.4vw, 1.3rem);
  --fs-body: 1.0625rem;
  --fs-sm: 0.9375rem;
  --fs-xs: 0.8125rem;
  --fs-eyebrow: 0.75rem;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --lh-tight: 1.12;
  --lh-snug: 1.28;
  --lh-body: 1.72;
  --lh-relaxed: 1.85;
  --ls-tight: 0;
  --ls-normal: 0;
  --ls-eyebrow: 0.22em;
  --ls-wide: 0.06em;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3rem;
  --space-9: 4rem;
  --space-10: 5rem;
  --space-12: 7rem;
  --space-14: 9rem;
  --section-y: clamp(4.5rem, 3rem + 7vw, 9rem);
  --gutter: clamp(1.25rem, 0.5rem + 3vw, 3rem);
  --content-max: 1200px;
  --content-narrow: 720px;
  --content-wide: 1360px;
  --control-sm: 2.25rem;
  --control-md: 2.75rem;
  --control-lg: 3.25rem;
  --z-nav: 100;
  --z-overlay: 200;
  --z-modal: 300;
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-pill: 999px;
  --r-card: var(--r-lg);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px -8px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 24px 60px -20px rgba(0, 0, 0, 0.65);
  --shadow-violet: 0 18px 48px -18px color-mix(in oklch, var(--violet-600) 55%, transparent);
  --shadow-glow: 0 0 0 1px var(--border), 0 20px 60px -22px color-mix(in oklch, var(--coral-500) 45%, transparent);
  --inner-hairline: inset 0 1px 0 color-mix(in oklch, #fff 8%, transparent);
  --blur-nav: saturate(140%) blur(16px);
  --blur-soft: blur(8px);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 140ms;
  --dur: 240ms;
  --dur-slow: 480ms;
  --dur-glow: 900ms;
  --grain-opacity: 0.05;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; overflow-x: hidden; background: var(--bg); color: var(--text); font-family: var(--font-body); font-size: var(--fs-body); line-height: var(--lh-body); font-weight: var(--fw-regular); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--text-strong); line-height: var(--lh-tight); font-weight: var(--fw-bold); margin: 0 0 0.5em; text-wrap: balance; }
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); letter-spacing: var(--ls-tight); }
p { margin: 0 0 1em; text-wrap: pretty; }
p:last-child { margin-bottom: 0; }
a { color: var(--accent-hover); text-decoration: none; transition: color var(--dur) var(--ease-out); }
a:hover { color: var(--coral-400); }
button, a { touch-action: manipulation; }
strong { color: var(--text-strong); font-weight: var(--fw-semibold); }
small { font-size: var(--fs-sm); }
::selection { background: color-mix(in oklch, var(--violet-500) 45%, transparent); color: #fff; }
:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; border-radius: var(--r-xs); }
img { max-width: 100%; display: block; }
hr { border: 0; border-top: 1px solid var(--border); margin: var(--space-6) 0; }
.iku-skip { position: fixed; top: 0.75rem; left: var(--gutter); z-index: calc(var(--z-modal) + 1); padding: 0.7rem 1rem; border-radius: var(--r-sm); background: var(--paper); color: var(--ink-950); font-family: var(--font-ui); font-size: var(--fs-sm); font-weight: var(--fw-semibold); transform: translateY(-160%); transition: transform var(--dur-fast) var(--ease-out); }
.iku-skip:focus { color: var(--ink-950); transform: translateY(0); }
.eyebrow { font-family: var(--font-sans); font-size: var(--fs-eyebrow); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; color: var(--detail); font-weight: var(--fw-medium); }
.display-latin { font-family: var(--font-serif); font-style: italic; }
.mono { font-family: var(--font-mono); }
.iku-wrap { width: 100%; max-width: var(--content-max); margin-inline: auto; padding-inline: var(--gutter); }
.reveal { opacity: 1; transform: none; }
.has-motion .reveal { opacity: 0; transform: translateY(18px); will-change: transform, opacity; }
.has-motion .reveal.in { opacity: 1; transform: none; will-change: auto; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal, .has-motion .reveal { opacity: 1; transform: none; transition: none; will-change: auto; }
  .iku-hero__scroll svg { animation: none; }
}
.iku-eyebrow { font-family: var(--font-serif); font-style: italic; font-size: var(--fs-eyebrow); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; color: var(--detail); display: inline-block; margin-bottom: 1.1rem; }
.iku-more { display: inline-flex; align-items: center; gap: 0.45em; min-height: 44px; font-family: var(--font-ui); font-size: var(--fs-sm); font-weight: var(--fw-medium); color: var(--detail); transition: color var(--dur) var(--ease-out), gap var(--dur) var(--ease-out); }
.iku-more:hover { color: var(--coral-400); gap: 0.75em; }
.iku-more svg { width: 1.05em; height: 1.05em; }
.iku-sec { position: relative; padding-block: var(--section-y); }
.iku-about__title, .iku-services__title, .iku-works__title, .iku-flow__title { font-family: var(--font-hand); font-weight: 700; font-size: var(--fs-display); line-height: 1.14; color: var(--text-strong); margin: 0 0 1.1rem; text-wrap: balance; }
.iku-services__lead, .iku-works__lead, .iku-flow__lead { font-size: var(--fs-lead); color: var(--text); line-height: var(--lh-relaxed); max-width: 54ch; margin: 0; }

.iks-btn { --_h: var(--control-md); display: inline-flex; align-items: center; justify-content: center; gap: .55em; font-family: var(--font-ui); font-weight: var(--fw-semibold); font-size: var(--fs-sm); line-height: 1; height: var(--_h); padding: 0 1.25rem; border-radius: var(--r-pill); border: 1px solid transparent; cursor: pointer; text-decoration: none; white-space: nowrap; transition: background var(--dur) var(--ease-out), color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), transform var(--dur-fast) var(--ease-out), box-shadow var(--dur) var(--ease-out); user-select: none; }
.iks-btn:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
.iks-btn--sm { --_h: var(--control-sm); font-size: var(--fs-xs); padding: 0 1rem; }
.iks-btn--lg { --_h: var(--control-lg); font-size: var(--fs-body); padding: 0 1.6rem; }
.iks-btn--full { width: 100%; }
.iks-btn[disabled], .iks-btn[aria-disabled="true"] { opacity: .5; pointer-events: none; }
.iks-btn__ico { display: inline-flex; width: 1.1em; height: 1.1em; }
.iks-btn__ico svg { width: 100%; height: 100%; }
.iks-btn--primary { background: var(--accent); color: var(--on-accent); box-shadow: var(--shadow-violet); }
.iks-btn--primary:hover { background: var(--accent-hover); }
.iks-btn--primary:active { background: var(--accent-press); transform: scale(.98); }
.iks-btn--secondary { background: transparent; color: var(--text-strong); border-color: var(--border-strong); }
.iks-btn--secondary:hover { border-color: var(--accent); color: var(--accent-hover); }
.iks-btn--secondary:active { transform: scale(.98); }
.iks-btn--ghost { background: transparent; color: var(--text); padding-inline: .85rem; }
.iks-btn--ghost:hover { color: var(--coral-400); }
.iks-btn--glow { background: var(--glow); color: #2a0e12; box-shadow: var(--shadow-glow); }
.iks-btn--glow:hover { background: var(--coral-400); }
.iks-btn--glow:active { transform: scale(.98); }
.iks-btn:active { transform: scale(.98); }
.iks-tag { display: inline-flex; align-items: center; gap: .4em; font-family: var(--font-ui); font-size: var(--fs-xs); font-weight: var(--fw-medium); line-height: 1; padding: .42em .8em; border-radius: var(--r-pill); border: 1px solid transparent; white-space: nowrap; letter-spacing: var(--ls-wide); }
.iks-tag__dot { width: .42em; height: .42em; border-radius: 50%; background: currentColor; flex: none; }
.iks-tag--violet { color: var(--violet-200); background: color-mix(in oklch, var(--violet-500) 16%, transparent); border-color: var(--border-accent); }
.iks-tag--teal { color: var(--teal-300); background: color-mix(in oklch, var(--teal-500) 14%, transparent); border-color: color-mix(in oklch, var(--teal-500) 35%, transparent); }
.iks-tag--coral { color: var(--coral-300); background: color-mix(in oklch, var(--coral-500) 15%, transparent); border-color: color-mix(in oklch, var(--coral-500) 38%, transparent); }
.iks-tag--neutral { color: var(--mist-400); background: var(--surface-2); border-color: var(--border); }
.iks-sh { display: flex; flex-direction: column; gap: .85rem; max-width: var(--content-narrow); }
.iks-sh--center { align-items: center; text-align: center; margin-inline: auto; }
.iks-sh__eyebrow { font-family: var(--font-serif); font-style: italic; font-size: var(--fs-eyebrow); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; color: var(--detail); font-weight: var(--fw-medium); display: inline-flex; align-items: center; gap: .6em; }
.iks-sh__eyebrow::before { content: ""; width: 1.6rem; height: 1px; background: currentColor; opacity: .7; }
.iks-sh--center .iks-sh__eyebrow::before { display: none; }
.iks-sh__title { font-family: var(--font-display); font-weight: var(--fw-bold); color: var(--text-strong); font-size: var(--fs-display); line-height: var(--lh-tight); margin: 0; text-wrap: balance; }
.iks-sh__lead { font-size: var(--fs-lead); color: var(--text); line-height: var(--lh-relaxed); margin: 0; text-wrap: pretty; }
.iks-work { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-card); overflow: hidden; text-decoration: none; color: inherit; transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out); }
a.iks-work:hover { transform: translateY(-4px); box-shadow: var(--shadow-violet); border-color: var(--border-accent); }
a.iks-work:active { transform: translateY(-1px) scale(.995); }
.iks-work__media { position: relative; aspect-ratio: 16/9; background: var(--ink-800); overflow: hidden; }
.iks-work__media img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-slow) var(--ease-out); opacity: .92; }
a.iks-work:hover .iks-work__media img { transform: scale(1.05); opacity: 1; }
.iks-work__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, color-mix(in oklch, var(--ink-950) 78%, transparent), transparent 55%); }
.iks-work__play { position: absolute; left: 50%; top: 50%; translate: -50% -50%; z-index: 2; width: 52px; height: 52px; border-radius: var(--r-pill); background: color-mix(in oklch, var(--ink-950) 45%, transparent); backdrop-filter: var(--blur-soft); border: 1px solid color-mix(in oklch, #fff 30%, transparent); display: grid; place-items: center; color: #fff; transition: background var(--dur) var(--ease-out), transform var(--dur) var(--ease-out); }
a.iks-work:hover .iks-work__play { background: var(--accent); transform: translate(-50%, -50%) scale(1.08); border-color: transparent; }
.iks-work__play svg { width: 20px; height: 20px; margin-left: 2px; }
.iks-work__cat { position: absolute; left: 14px; top: 14px; z-index: 2; }
.iks-work__body { padding: 1.15rem 1.25rem 1.35rem; display: flex; flex-direction: column; gap: .5rem; }
.iks-work__title { font-family: var(--font-display); font-weight: var(--fw-bold); color: var(--text-strong); font-size: var(--fs-h3); line-height: var(--lh-snug); margin: 0; }
.iks-work__desc { font-size: var(--fs-sm); color: var(--text-muted); line-height: var(--lh-body); margin: 0; }
.iks-work__feat { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--text-faint); letter-spacing: .04em; }
.iks-step { position: relative; display: flex; gap: 1.1rem; padding-bottom: 1.9rem; }
.iks-step:last-child { padding-bottom: 0; }
.iks-step__rail { display: flex; flex-direction: column; align-items: center; flex: none; }
.iks-step__num { width: 2.5rem; height: 2.5rem; border-radius: var(--r-pill); display: grid; place-items: center; font-family: var(--font-mono); font-size: var(--fs-sm); font-weight: var(--fw-bold); color: var(--violet-200); background: var(--accent-soft); border: 1px solid var(--border-accent); z-index: 1; }
.iks-step__line { width: 1px; flex: 1; margin-top: .3rem; background: linear-gradient(var(--border-accent), var(--border)); }
.iks-step:last-child .iks-step__line { display: none; }
.iks-step__body { padding-top: .35rem; display: flex; flex-direction: column; gap: .3rem; }
.iks-step__title { font-family: var(--font-display); font-weight: var(--fw-bold); color: var(--text-strong); font-size: var(--fs-h3); margin: 0; line-height: var(--lh-snug); }
.iks-step__desc { font-size: var(--fs-sm); color: var(--text-muted); margin: 0; line-height: var(--lh-body); }
.iks-step__meta { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--detail); letter-spacing: .06em; }
.iks-step--done .iks-step__num { background: var(--accent); color: var(--on-accent); border-color: transparent; }
.iks-faq { border-bottom: 1px solid var(--border); }
.iks-faq__q { all: unset; box-sizing: border-box; display: flex; align-items: center; gap: 1rem; width: 100%; cursor: pointer; padding: 1.15rem 0; font-family: var(--font-display); font-weight: var(--fw-bold); color: var(--text-strong); font-size: var(--fs-h3); line-height: var(--lh-snug); }
.iks-faq__q:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 3px; border-radius: var(--r-xs); }
.iks-faq__q:hover { color: var(--violet-200); }
.iks-faq__ico { margin-left: auto; flex: none; width: 1.4rem; height: 1.4rem; color: var(--accent); transition: transform var(--dur) var(--ease-out); }
.iks-faq--open .iks-faq__ico { transform: rotate(45deg); }
.iks-faq__panel { overflow: hidden; display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--dur-slow) var(--ease-out); }
.iks-faq--open .iks-faq__panel { grid-template-rows: 1fr; }
.iks-faq__inner { min-height: 0; }
.iks-faq__a { margin: 0; padding: 0 2.4rem 1.35rem 0; color: var(--text-muted); font-size: var(--fs-body); line-height: var(--lh-relaxed); }
.iks-social { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; color: var(--text); font-family: var(--font-ui); transition: color var(--dur) var(--ease-out); }
.iks-social:hover { color: var(--text-strong); }
.iks-social:active { opacity: .72; }
.iks-social__ico { flex: none; width: 1.15rem; height: 1.15rem; background: currentColor; -webkit-mask-position: center; mask-position: center; -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat; -webkit-mask-size: contain; mask-size: contain; color: var(--mist-400); transition: color var(--dur) var(--ease-out); }
.iks-social:hover .iks-social__ico { color: var(--violet-300); }
.iks-social__ico--youtube { -webkit-mask-image: url("https://cdn.simpleicons.org/youtube"); mask-image: url("https://cdn.simpleicons.org/youtube"); }
.iks-social__ico--instagram { -webkit-mask-image: url("https://cdn.simpleicons.org/instagram"); mask-image: url("https://cdn.simpleicons.org/instagram"); }
.iks-social__ico--x { -webkit-mask-image: url("https://cdn.simpleicons.org/x"); mask-image: url("https://cdn.simpleicons.org/x"); }
.iks-social__ico--email { -webkit-mask-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill='black' d='M3 5h18a1 1 0 0 1 1 1v12a1 1 0 0 1-1 1H3a1 1 0 0 1-1-1V6a1 1 0 0 1 1-1Zm9 8.2L4.8 7H4v.7l8 6.8 8-6.8V7h-.8L12 13.2Z'/%3E%3C/svg%3E"); mask-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill='black' d='M3 5h18a1 1 0 0 1 1 1v12a1 1 0 0 1-1 1H3a1 1 0 0 1-1-1V6a1 1 0 0 1 1-1Zm9 8.2L4.8 7H4v.7l8 6.8 8-6.8V7h-.8L12 13.2Z'/%3E%3C/svg%3E"); }
.iks-social__label { font-size: var(--fs-sm); }
.iks-social__handle { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--text-faint); }
.iks-social--btn { width: 2.75rem; height: 2.75rem; justify-content: center; border-radius: var(--r-pill); border: 1px solid var(--border); background: var(--surface); transition: border-color var(--dur) var(--ease-out), background var(--dur) var(--ease-out), transform var(--dur-fast) var(--ease-out); }
.iks-social--btn:hover { border-color: var(--border-accent); background: var(--surface-2); transform: translateY(-2px); }
.iks-social--btn .iks-social__ico { width: 1.25rem; height: 1.25rem; }
.iks-social__vg { font-family: var(--font-serif); font-style: italic; font-weight: 700; font-size: 1rem; color: var(--mist-400); transition: color var(--dur) var(--ease-out); line-height: 1; }
.iks-social:hover .iks-social__vg { color: var(--violet-300); }

.iku-nav { position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-nav); padding-top: env(safe-area-inset-top); transition: background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), backdrop-filter var(--dur) var(--ease-out); border-bottom: 1px solid transparent; }
.iku-nav.is-scrolled { background: color-mix(in oklch, var(--ink-950) 78%, transparent); backdrop-filter: var(--blur-nav); -webkit-backdrop-filter: var(--blur-nav); border-bottom-color: var(--border); }
.iku-nav__inner { max-width: var(--content-wide); margin-inline: auto; padding: 0.85rem var(--gutter); display: flex; align-items: center; gap: 1.5rem; }
.iku-nav__brand { font-family: var(--font-hand); font-weight: 700; font-size: 1.6rem; color: var(--text-strong); letter-spacing: 0; }
.iku-nav__brand:hover { color: var(--text-strong); }
.iku-nav__links { display: flex; gap: 1.55rem; margin-left: auto; }
.iku-nav__links a { position: relative; padding-block: .55rem; font-family: var(--font-ui); font-size: var(--fs-sm); color: var(--text-muted); transition: color var(--dur) var(--ease-out); }
.iku-nav__links a::after { content: ""; position: absolute; left: 0; right: 0; bottom: .25rem; height: 1px; background: var(--detail); transform: scaleX(0); transform-origin: right; transition: transform var(--dur) var(--ease-out); }
.iku-nav__links a:hover { color: var(--text-strong); }
.iku-nav__links a:hover::after, .iku-nav__links a.is-current::after { transform: scaleX(1); transform-origin: left; }
.iku-nav__links a.is-current { color: var(--text-strong); }
.iku-nav__cta { flex: none; }
.iku-nav__cta .iks-btn--sm { min-height: 44px; }
.iku-nav__burger { display: none; background: none; border: 0; color: var(--text-strong); width: 2.75rem; height: 2.75rem; cursor: pointer; margin-left: auto; }
.iku-nav__burger svg { width: 24px; height: 24px; }
.iku-nav__burger-close { display: none; }
.iku-nav.is-open .iku-nav__burger-open { display: none; }
.iku-nav.is-open .iku-nav__burger-close { display: block; }
.iku-nav__mobile { display: none; }
.iku-hero { position: relative; min-height: 100svh; display: flex; align-items: center; padding: 7rem var(--gutter) 5rem; overflow: hidden; }
.iku-hero__glow { position: absolute; inset: 0; background: var(--sunset-glow); opacity: 0.9; pointer-events: none; }
.iku-hero__glow::after { content: ""; position: absolute; inset: 0; background: radial-gradient(70% 50% at 18% 92%, color-mix(in oklch, var(--violet-700) 38%, transparent), transparent 70%); }
.iku-hero__inner { position: relative; z-index: 1; width: 100%; max-width: var(--content-wide); margin-inline: auto; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem, 4vw, 5rem); align-items: center; }
.iku-hero__eyebrow { font-family: var(--font-serif); font-style: italic; font-size: var(--fs-eyebrow); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; color: var(--detail); display: inline-block; margin-bottom: 1.4rem; }
.iku-hero__title { font-family: var(--font-hand); font-weight: 700; font-size: var(--fs-hero); line-height: 1.16; color: var(--text-strong); margin: 0 0 1.5rem; text-wrap: balance; }
.iku-hero__sub { font-size: var(--fs-lead); color: var(--text); line-height: var(--lh-relaxed); max-width: 34ch; margin: 0 0 2rem; }
.iku-hero__actions { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-bottom: 2rem; }
.iku-hero__meta { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; align-items: center; gap: 0.7rem 1rem; font-family: var(--font-ui); font-size: var(--fs-sm); color: var(--text-muted); }
.iku-hero__meta li { display: flex; align-items: center; gap: 1rem; }
.iku-hero__meta li:not(:last-child)::after { content: ""; width: 4px; height: 4px; border-radius: 50%; background: var(--border-strong); }
.iku-hero__media { position: relative; }
.iku-hero__frame { position: relative; aspect-ratio: 4/5; border-radius: var(--r-xl); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-glow), var(--shadow-lg); }
.iku-hero__frame img { width: 100%; height: 100%; object-fit: cover; }
.has-motion .iku-hero__frame img, .has-motion .iku-about__fig--tall img, .has-motion .iku-hero__glow { will-change: transform; }
.iku-hero__caption { position: absolute; left: 1.1rem; bottom: 1rem; font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--paper); background: color-mix(in oklch, var(--ink-950) 55%, transparent); backdrop-filter: var(--blur-soft); padding: 0.45em 0.85em; border-radius: var(--r-pill); }
.iku-hero__scroll { position: absolute; left: 50%; bottom: 1.6rem; translate: -50% 0; z-index: 1; display: inline-flex; flex-direction: column; align-items: center; gap: 0.4rem; color: var(--text-faint); font-family: var(--font-serif); font-style: italic; font-size: 0.8rem; letter-spacing: 0.12em; }
.iku-hero__scroll:hover { color: var(--text); }
.iku-hero__scroll svg { width: 18px; height: 18px; animation: iku-bob 1.8s var(--ease-in-out) infinite; }
@keyframes iku-bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(5px); } }
.iku-about__grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; }
.iku-about__lead { font-family: var(--font-hand); font-weight: 700; font-size: clamp(1.4rem, 1.1rem + 1vw, 1.9rem); color: var(--text-strong); line-height: 1.4; margin: 0 0 1.2rem; }
.iku-about__body { font-size: var(--fs-body); color: var(--text-muted); line-height: var(--lh-relaxed); margin: 0 0 1rem; max-width: 54ch; }
.iku-about__note { font-size: var(--fs-sm); color: var(--text-faint); line-height: var(--lh-body); margin: 1.6rem 0 0; padding-left: 1rem; border-left: 2px solid var(--border-accent); max-width: 52ch; }
.iku-about__media { display: grid; grid-template-columns: 1.12fr 0.88fr; gap: 0.9rem; }
.iku-about__fig { margin: 0; border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-md); }
.iku-about__fig img { width: 100%; height: 100%; object-fit: cover; display: block; }
.iku-about__fig:not(.iku-about__fig--tall) { aspect-ratio: 5/4; }
.iku-about__fig--tall { grid-column: 1; grid-row: 1 / span 2; }
.iku-about__fig--tall img { min-height: 100%; }
.iku-services__head { max-width: var(--content-narrow); margin-bottom: 2.6rem; }
.iku-pricelist { border-top: 1px solid var(--border); }
.iku-priceitem { display: grid; grid-template-columns: auto 1fr auto; column-gap: 1.6rem; row-gap: 0.4rem; align-items: baseline; padding: 1.8rem 0; border-bottom: 1px solid var(--border); }
.iku-priceitem__idx { font-family: var(--font-mono); font-size: var(--fs-sm); color: var(--text-faint); padding-top: 0.35rem; }
.iku-priceitem__name { font-family: var(--font-hand); font-weight: 700; font-size: 1.5rem; color: var(--text-strong); margin: 0 0 0.4rem; }
.iku-priceitem__desc { font-size: var(--fs-sm); color: var(--text-muted); line-height: var(--lh-body); margin: 0 0 0.5rem; max-width: 46ch; }
.iku-priceitem__eta { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--detail); letter-spacing: 0.05em; }
.iku-priceitem__price { font-family: var(--font-mono); display: flex; align-items: baseline; gap: 0.25em; white-space: nowrap; }
.iku-priceitem__price .cur { font-size: var(--fs-sm); color: var(--text-muted); }
.iku-priceitem__price b { font-size: 1.9rem; color: var(--text-strong); }
.iku-priceitem__price .unit { font-family: var(--font-body); font-size: var(--fs-sm); color: var(--coral-300); }
.iku-services__foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 1.6rem 2.5rem; margin-top: 2.2rem; }
.iku-services__addons { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.6rem; }
.iku-services__addons li { display: inline-flex; align-items: baseline; gap: 0.5em; font-size: var(--fs-sm); color: var(--text-muted); border: 1px solid var(--border); border-radius: var(--r-pill); padding: 0.4em 0.95em; }
.iku-services__addons b { font-family: var(--font-mono); color: var(--coral-300); font-weight: var(--fw-regular); }
.iku-services__cta { display: flex; flex-direction: column; gap: 0.9rem; align-items: flex-end; }
.iku-services__note { font-size: var(--fs-sm); color: var(--text-faint); max-width: 34ch; text-align: right; }
.iku-services__btns { display: flex; flex-wrap: wrap; gap: 0.7rem; }
.iku-works__head { max-width: var(--content-narrow); margin-bottom: 2.4rem; }
.iku-feat { display: grid; grid-template-columns: 1.45fr 1fr; gap: clamp(1.5rem, 3vw, 3rem); align-items: center; margin-bottom: 2.6rem; }
.iku-feat__player { position: relative; aspect-ratio: 16/9; border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-lg); background: var(--ink-800); }
.iku-feat__player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.iku-feat__cover { all: unset; box-sizing: border-box; display: block; position: absolute; inset: 0; cursor: pointer; }
.iku-feat__cover img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-slow) var(--ease-out), opacity var(--dur) var(--ease-out); opacity: 0.92; }
.iku-feat__cover:hover img { transform: scale(1.04); opacity: 1; }
.iku-feat__cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, color-mix(in oklch, var(--ink-950) 55%, transparent), transparent 60%); }
.iku-feat__play { position: absolute; left: 50%; top: 50%; translate: -50% -50%; z-index: 2; width: 68px; height: 68px; border-radius: var(--r-pill); background: color-mix(in oklch, var(--ink-950) 42%, transparent); backdrop-filter: var(--blur-soft); border: 1px solid color-mix(in oklch, #fff 32%, transparent); display: grid; place-items: center; color: #fff; transition: background var(--dur) var(--ease-out), transform var(--dur) var(--ease-out); }
.iku-feat__cover:hover .iku-feat__play { background: var(--accent); border-color: transparent; transform: translate(-50%, -50%) scale(1.08); }
.iku-feat__play svg { width: 26px; height: 26px; margin-left: 3px; }
.iku-feat__tag { font-family: var(--font-serif); font-style: italic; font-size: var(--fs-eyebrow); letter-spacing: 0.14em; text-transform: uppercase; color: var(--detail); }
.iku-feat__title { font-family: var(--font-hand); font-weight: 700; font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.3rem); color: var(--text-strong); margin: 0.7rem 0 0.3rem; line-height: 1.2; }
.iku-feat__feat { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--text-faint); }
.iku-feat__desc { font-size: var(--fs-body); color: var(--text-muted); line-height: var(--lh-body); margin: 0.9rem 0 1.1rem; max-width: 40ch; }
.iku-works__tabs { display: inline-flex; gap: 0.3rem; padding: 0.3rem; border: 1px solid var(--border); border-radius: var(--r-pill); background: var(--surface); margin: 0 0 2rem; }
.iku-tab { min-height: 44px; border: 0; background: none; cursor: pointer; font-family: var(--font-ui); font-size: var(--fs-sm); font-weight: var(--fw-medium); color: var(--text-muted); padding: 0.6em 1.3em; border-radius: var(--r-pill); transition: background var(--dur) var(--ease-out), color var(--dur) var(--ease-out), transform var(--dur-fast) var(--ease-out); white-space: nowrap; }
.iku-tab.is-on { background: var(--accent); color: var(--on-accent); }
.iku-tab:active { transform: scale(.98); }
.iku-works__panel { display: none; }
.iku-works__panel.is-on { display: block; }
.iku-works__panel[hidden] { display: none; }
.iku-works__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.iku-flow__grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.iku-flow__head { position: sticky; top: 100px; }
.iku-flow__timing { margin-top: 1.8rem; display: flex; flex-direction: column; gap: 0.2rem; }
.iku-timing { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; padding: 0.7rem 0; border-bottom: 1px solid var(--border); }
.iku-timing__k { font-family: var(--font-ui); color: var(--text); font-size: var(--fs-sm); }
.iku-timing__v { font-family: var(--font-mono); color: var(--detail); font-size: var(--fs-sm); }
.iku-flow__terms { list-style: none; margin: 1.8rem 0 0; padding: 0; display: flex; flex-direction: column; gap: 0.85rem; }
.iku-flow__terms li { display: flex; gap: 0.7rem; font-size: var(--fs-sm); color: var(--text-muted); line-height: var(--lh-body); }
.iku-flow__terms svg { width: 1.05em; height: 1.05em; flex: none; margin-top: 0.35em; color: var(--detail); }
.iku-flow__steps { list-style: none; margin: 0; padding: 0; }
.iku-faq__grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.iku-faq__head { position: sticky; top: 100px; }
.iku-faq__cred { margin-top: 1.6rem; display: flex; flex-direction: column; gap: 0.8rem; font-size: var(--fs-sm); color: var(--text-muted); align-items: flex-start; }
.iku-contact { text-align: center; overflow: hidden; }
.iku-contact__glow { position: absolute; inset: 0; background: radial-gradient(50% 70% at 50% 0%, color-mix(in oklch, var(--coral-500) 26%, transparent), transparent 70%); pointer-events: none; }
.iku-contact__inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; }
.iku-contact__title { font-family: var(--font-hand); font-weight: 700; font-size: var(--fs-display); color: var(--text-strong); margin: 1rem 0 0.9rem; text-wrap: balance; }
.iku-contact__sub { font-size: var(--fs-lead); color: var(--text); max-width: 40ch; margin: 0 0 2rem; }
.iku-contact__actions { display: flex; flex-wrap: wrap; gap: 0.85rem; justify-content: center; margin-bottom: 2.6rem; }
.iku-contact__rows { display: flex; flex-wrap: wrap; gap: 1.4rem 2.2rem; justify-content: center; }
.iku-contact__rows .iks-social { min-height: 44px; }
.iku-footer { border-top: 1px solid var(--border); padding-block: 3rem 2rem; background: var(--ink-900); }
.iku-footer__inner { display: flex; flex-wrap: wrap; gap: 2rem; justify-content: space-between; align-items: flex-start; }
.iku-footer__mark { font-family: var(--font-hand); font-weight: 700; font-size: 1.7rem; color: var(--text-strong); }
.iku-footer__tag { margin: 0.5rem 0 0; font-size: var(--fs-sm); color: var(--text-muted); }
.iku-footer__nav { display: flex; flex-wrap: wrap; gap: 0.4rem 1.4rem; max-width: 320px; }
.iku-footer__nav a { display: inline-flex; align-items: center; min-width: 44px; min-height: 44px; padding-inline: .45rem; font-size: var(--fs-sm); color: var(--text-muted); }
.iku-footer__nav a:hover { color: var(--text-strong); }
.iku-footer__social { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.iku-footer__base { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.6rem; margin-top: 2.4rem; padding-top: 1.5rem; border-top: 1px solid var(--border); font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--text-faint); }
.iku-footer__author { color: var(--text-faint); }

@media (max-width: 920px) {
  .iku-nav__links, .iku-nav__cta { display: none; }
  .iku-nav__burger { display: inline-flex; align-items: center; justify-content: center; }
  .iku-nav.is-open .iku-nav__mobile { display: flex; flex-direction: column; gap: 0.4rem; padding: 0.5rem var(--gutter) 1.2rem; background: color-mix(in oklch, var(--ink-950) 92%, transparent); backdrop-filter: var(--blur-nav); border-bottom: 1px solid var(--border); }
  .iku-nav__mobile a { padding: 0.7rem 0; color: var(--text); border-bottom: 1px solid var(--border); }
  .iku-nav__mobile .iks-btn { margin-top: 0.45rem; border-bottom: 0; }
  .iku-hero__inner, .iku-about__grid, .iku-flow__grid, .iku-faq__grid, .iku-feat { grid-template-columns: 1fr; }
  .iku-hero { min-height: auto; padding-top: 6rem; }
  .iku-hero__media { order: -1; max-width: 380px; }
  .iku-hero__scroll { display: none; }
  .iku-flow__head, .iku-faq__head { position: static; }
  .iku-works__grid { grid-template-columns: repeat(2, 1fr); }
  .iku-about__media { max-width: 520px; }
  .iku-services__foot { flex-direction: column; align-items: stretch; }
  .iku-services__cta { align-items: stretch; }
  .iku-services__note { text-align: left; max-width: none; }
}
@media (max-width: 920px) and (min-width: 700px) and (orientation: landscape) {
  .iku-hero { min-height: 100svh; padding-top: 5.5rem; padding-bottom: 3rem; }
  .iku-hero__inner { grid-template-columns: 1.05fr .75fr; gap: 2rem; }
  .iku-hero__media { order: 0; width: 100%; max-width: 240px; justify-self: end; }
  .iku-hero__title { font-size: 2.35rem; }
  .iku-hero__sub { max-width: 38ch; margin-bottom: 1.2rem; font-size: 1rem; line-height: 1.65; }
  .iku-hero__actions { margin-bottom: 1rem; }
  .iku-hero__meta { font-size: var(--fs-xs); }
}
@media (max-width: 560px) {
  .iku-works__grid { grid-template-columns: 1fr; }
  .iku-hero__actions .iks-btn, .iku-contact__actions .iks-btn, .iku-services__btns .iks-btn { width: 100%; }
  .iku-priceitem { grid-template-columns: 1fr auto; }
  .iku-priceitem__idx { display: none; }
  .iku-priceitem__price { grid-column: 1 / -1; margin-top: 0.5rem; }
  .iku-about__media { grid-template-columns: 1fr 1fr; }
  .iku-about__fig--tall { grid-column: 1 / -1; grid-row: auto; aspect-ratio: 16/10; }
}