/* ============ DRTView Windows 소개 ============
   Android /drtview/ 페이지(ko-drtview.css)와 분리된 전용 스타일. 루트 #dvw 아래에서만 동작.
   원칙: 사진이 주인공, 글은 명사형 개조식, 번호는 절에만, 장식 효과(글로우·형광) 없음. */
#dvw {
    --bg: #090B0F;
    --bg-2: #0E1218;
    --ink: #F2F5F9;
    --dim: #93A0B0;
    --dim-2: #C9D2DD;
    --line: rgba(255, 255, 255, 0.10);
    --accent: #3AA0FF;
    --wrap: 1240px;
    --gut: 48px;
    background: var(--bg);
    color: var(--ink);
    font-size: 16px;
    line-height: 1.6;
    word-break: keep-all;
    overflow-x: hidden;
    font-feature-settings: "tnum" 1;
}
#dvw *, #dvw *::before, #dvw *::after { box-sizing: border-box; margin: 0; padding: 0; }
#dvw img { max-width: 100%; display: block; }
#dvw a { text-decoration: none; color: inherit; }
#dvw a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 6px; }
#dvw .dvw-wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gut); }

/* ---------- 사진 틀 ---------- */
#dvw .dvw-frame {
    border-radius: 12px;
    overflow: hidden;
    background: #000;
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 24px 70px -24px rgba(0, 0, 0, 0.9);
}
#dvw .dvw-frame img { width: 100%; height: auto; }
#dvw figcaption { margin-top: 12px; color: var(--dim); font-size: 14px; line-height: 1.5; }

/* ---------- 첫 화면 ---------- */
#dvw .dvw-hero { position: relative; isolation: isolate; padding: 96px 0 72px; }
#dvw .dvw-hero .dvw-wrap { position: relative; z-index: 1; }
#dvw .dvw-brand { display: flex; align-items: center; gap: 14px; color: var(--dim-2); font-size: 15px; font-weight: 600; margin-bottom: 36px; }
#dvw .dvw-brand img { height: 28px; width: auto; }
#dvw h1 { font-size: clamp(44px, 7.2vw, 108px); font-weight: 800; line-height: 1.02; letter-spacing: -0.04em; color: var(--ink); max-width: 11em; }
#dvw .dvw-hero-sub { margin-top: 26px; color: var(--dim-2); font-size: clamp(17px, 1.5vw, 21px); line-height: 1.7; max-width: 30em; text-wrap: pretty; }
#dvw .dvw-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
#dvw .dvw-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 30px; border-radius: 10px; font-weight: 700; font-size: 16px; transition: background-color .2s ease, border-color .2s ease; }
#dvw .dvw-btn-solid { background: var(--accent); color: #fff; letter-spacing: .06em; }
#dvw .dvw-btn-solid:hover { background: #63B4FF; }
#dvw .dvw-btn-ghost { border: 1px solid rgba(255, 255, 255, 0.32); color: var(--ink); }
#dvw .dvw-btn-ghost:hover { border-color: rgba(255, 255, 255, 0.8); }

/* 첫 사진: 본문보다 넓게 */
#dvw .dvw-hero-shot { position: relative; z-index: 1; max-width: 1480px; margin: 64px auto 0; padding: 0 var(--gut); }
#dvw .dvw-hero-shot .dvw-frame { border-radius: 16px; box-shadow: 0 40px 100px -30px rgba(0, 0, 0, 0.95); }

/* 특성 띠: 번호 없음, 각 칸이 해당 절로 이동 */
#dvw .dvw-strip { position: relative; z-index: 1; margin-top: 56px; display: grid; grid-template-columns: repeat(6, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
#dvw .dvw-strip a { display: block; padding: 24px 20px 24px 0; border-right: 1px solid var(--line); transition: color .2s ease; }
#dvw .dvw-strip a + a { padding-left: 20px; }
#dvw .dvw-strip a:last-child { border-right: 0; }
#dvw .dvw-strip a:hover b { color: var(--accent); }
#dvw .dvw-strip b { display: block; font-size: 19px; font-weight: 800; letter-spacing: -0.01em; color: var(--ink); margin-bottom: 6px; transition: color .2s ease; }
#dvw .dvw-strip span { display: block; color: var(--dim); font-size: 14px; line-height: 1.5; }
#dvw .dvw-real { margin-top: 20px; color: var(--dim); font-size: 14px; }

/* 배경: WebGL 장면, 없으면 그라데이션만 */
#dvw .dvw-bg {
    position: absolute; inset: 0 0 auto 0; height: min(900px, 100%); z-index: 0; pointer-events: none;
    background: radial-gradient(ellipse 60% 45% at 70% 0%, rgba(58, 160, 255, 0.18), transparent 70%);
    -webkit-mask-image: linear-gradient(180deg, #000 60%, transparent 100%);
    mask-image: linear-gradient(180deg, #000 60%, transparent 100%);
}
#dvw .dvw-bg canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; opacity: 0; transition: opacity 1.6s ease; }
#dvw .dvw-bg.is-live canvas { opacity: 1; }

/* ---------- 기능 절 ---------- */
#dvw .dvw-sec { position: relative; padding: 112px 0; border-top: 1px solid var(--line); }
#dvw .dvw-sec:nth-of-type(even) { background: var(--bg-2); }
#dvw .dvw-feat { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 64px; align-items: center; }
#dvw .dvw-feat--flip { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
#dvw .dvw-feat--flip .dvw-text { order: 2; }
#dvw .dvw-text { position: sticky; top: 104px; }
#dvw h2 { font-size: clamp(28px, 3vw, 42px); font-weight: 800; line-height: 1.2; letter-spacing: -0.025em; color: var(--ink); margin-bottom: 16px; text-wrap: balance; }
#dvw .dvw-lead { color: var(--dim-2); font-size: 17px; line-height: 1.7; margin-bottom: 26px; text-wrap: pretty; }
#dvw .dvw-spec { border-top: 1px solid var(--line); }
#dvw .dvw-spec > div { display: grid; grid-template-columns: 7.5em minmax(0, 1fr); gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--line); }
#dvw .dvw-spec dt { color: var(--ink); font-size: 15px; font-weight: 700; }
#dvw .dvw-spec dd { color: var(--dim); font-size: 15px; line-height: 1.55; }
#dvw .dvw-sub { margin-top: 24px; padding: 18px 20px; border: 1px solid rgba(58, 160, 255, 0.35); border-radius: 12px; background: rgba(58, 160, 255, 0.07); scroll-margin-top: 104px; }
#dvw .dvw-sub h3 { color: var(--ink); font-size: 17px; font-weight: 800; margin-bottom: 4px; }
#dvw .dvw-sub p { color: var(--dim-2); font-size: 15px; line-height: 1.55; }
#dvw .dvw-link { margin-top: 26px; }
#dvw .dvw-media > * + * { margin-top: 26px; }
#dvw .dvw-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* ---------- 쇼케이스 절: 핵심 기능은 화면 폭 전체의 큰 사진 ---------- */
#dvw .dvw-show { position: relative; padding: 128px 0 112px; border-top: 1px solid var(--line); }
#dvw .dvw-show--alt { background: var(--bg-2); }
#dvw .dvw-show-head { max-width: 960px; margin-left: auto; margin-right: auto; text-align: center; margin-bottom: 48px; }
#dvw .dvw-show-head h2 { font-size: clamp(34px, 4.4vw, 60px); line-height: 1.12; letter-spacing: -0.035em; margin-bottom: 20px; }
#dvw .dvw-show-head { max-width: 820px; }
#dvw .dvw-show-head .dvw-lead { font-size: clamp(17px, 1.4vw, 20px); margin: 0 auto; max-width: 34em; }
#dvw .dvw-sec .dvw-show-head { margin-bottom: 40px; }
#dvw .dvw-wide { max-width: 1480px; margin: 0 auto; padding: 0 var(--gut); }
#dvw .dvw-wide .dvw-frame { border-radius: 16px; box-shadow: 0 40px 100px -30px rgba(0, 0, 0, 0.95); }
#dvw .dvw-wide + .dvw-wide, #dvw .dvw-wide + .dvw-cols, #dvw .dvw-wide + .dvw-wrap { margin-top: 28px; }
#dvw .dvw-wide.dvw-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
#dvw .dvw-cols { display: grid; gap: 36px; margin-top: 56px !important; padding-top: 32px; border-top: 1px solid var(--line); }
#dvw .dvw-cols-3 { grid-template-columns: repeat(3, 1fr); }
#dvw .dvw-cols-4 { grid-template-columns: repeat(4, 1fr); }
#dvw .dvw-cols-5 { grid-template-columns: repeat(5, 1fr); }
#dvw .dvw-cols h3 { color: var(--ink); font-size: 17px; font-weight: 800; margin-bottom: 8px; }
#dvw .dvw-cols p { color: var(--dim); font-size: 15px; line-height: 1.6; }
#dvw .dvw-spec-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; margin-top: 36px; border-top: 1px solid var(--line); }
#dvw .dvw-spec-row > div { grid-template-columns: 6.5em minmax(0, 1fr); }

/* ---------- 마지막 띠 ---------- */
#dvw .dvw-band { position: relative; overflow: hidden; background: #000; }
#dvw .dvw-band > img { width: 100%; height: clamp(360px, 52vh, 640px); object-fit: cover; opacity: .36; }
#dvw .dvw-band-txt { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 0 24px; gap: 22px; }
#dvw .dvw-band-txt h2 { margin: 0; }
#dvw .dvw-band-txt p { color: var(--dim-2); font-size: 15px; }
#dvw .dvw-band-spec { color: var(--ink) !important; font-size: 16px !important; margin-top: -6px; }


/* ---------- 움직임: 등장과 가벼운 시차만(스크립트가 dvw-motion 을 붙일 때만) ---------- */
#dvw .dvw-hero-shot, #dvw .dvw-media > figure, #dvw .dvw-wide > figure { translate: 0 var(--py, 0px); }
#dvw.dvw-motion .dvw-text, #dvw.dvw-motion .dvw-show-head, #dvw.dvw-motion .dvw-cols, #dvw.dvw-motion .dvw-band-txt { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s cubic-bezier(.22, .61, .36, 1); }
#dvw.dvw-motion .dvw-media, #dvw.dvw-motion .dvw-wide, #dvw.dvw-motion .du-recent { opacity: 0; transform: translateY(48px); transition: opacity .9s ease .05s, transform 1s cubic-bezier(.22, .61, .36, 1) .05s; }
#dvw.dvw-motion .is-in.dvw-text, #dvw.dvw-motion .is-in.du-recent, #dvw.dvw-motion .is-in.dvw-media, #dvw.dvw-motion .is-in.dvw-wide, #dvw.dvw-motion .is-in.dvw-show-head, #dvw.dvw-motion .is-in.dvw-cols, #dvw.dvw-motion .is-in.dvw-band-txt { opacity: 1; transform: none; }
#dvw.dvw-motion .dvw-spec > div { opacity: 0; transform: translateX(-12px); transition: opacity .6s ease, transform .6s ease; transition-delay: calc(.2s + var(--i, 0) * 70ms); }
#dvw.dvw-motion .is-in .dvw-spec > div { opacity: 1; transform: none; }
#dvw.dvw-motion .dvw-strip a { opacity: 0; transform: translateY(14px); transition: opacity .7s ease, transform .7s cubic-bezier(.22, .61, .36, 1); transition-delay: calc(var(--i, 0) * 80ms); }
#dvw.dvw-motion .dvw-strip.is-in a { opacity: 1; transform: none; }
#dvw.dvw-motion .dvw-hero > .dvw-wrap > * { opacity: 0; transform: translateY(22px); transition: opacity .9s ease, transform .9s cubic-bezier(.22, .61, .36, 1); }
#dvw.dvw-motion .dvw-hero > .dvw-wrap > :nth-child(2) { transition-delay: .08s; }
#dvw.dvw-motion .dvw-hero > .dvw-wrap > :nth-child(3) { transition-delay: .16s; }
#dvw.dvw-motion .dvw-hero > .dvw-wrap > :nth-child(4) { transition-delay: .24s; }
#dvw.dvw-motion.is-ready .dvw-hero > .dvw-wrap > * { opacity: 1; transform: none; }

/* ---------- 유지보수 절: 업데이트 소식의 카드(ko-drtview.css 의 .du-*)를 이 페이지 변수에 맞춘다 ---------- */
/* 값은 ko-drtview.css 의 .du-recent 묶음과 같다(그 파일은 이 페이지에 실리지 않는다). 한쪽을 고치면 다른 쪽도 같이 고친다. */
#dvw #dw-updates .dvw-show-head { margin-bottom: 36px; }
#dvw #dw-updates .dvw-actions { justify-content: center; }
#dvw .du-recent { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
#dvw .du-recent > div { padding: 22px 24px 24px; border-radius: 14px; background: rgba(255, 255, 255, 0.06); border: 1px solid var(--line); display: flex; flex-direction: column; }
#dvw .du-recent time { display: block; font-size: 22px; font-weight: 700; color: var(--ink); line-height: 1.3; margin-bottom: 8px; }
#dvw .du-ver { display: flex; flex-wrap: wrap; gap: 6px 18px; color: var(--accent); font-weight: 700; font-size: 13px; letter-spacing: .08em; line-height: 1.5; margin-bottom: 14px; }
#dvw .du-recent p { color: var(--ink); font-size: 16px; line-height: 1.7; }
#dvw .du-sum + .du-items { margin-top: 12px; }
#dvw .du-items { list-style: none; }
#dvw .du-items li { position: relative; padding-left: 24px; color: var(--dim-2); font-size: 15px; line-height: 1.7; }
#dvw .du-items li + li { margin-top: 7px; }
#dvw .du-items li::before { content: "—"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
#dvw .du-more { display: inline-block; margin-top: auto; padding-top: 14px; color: var(--dim); font-size: 14px; line-height: 1.5; }
#dvw .du-more:hover { color: var(--ink); }

/* ---------- 반응형 ---------- */
@media (max-width: 1000px) {
    #dvw { --gut: 24px; }
    #dvw .dvw-hero { padding: 56px 0 56px; }
    #dvw .dvw-hero-shot { margin-top: 40px; }
    #dvw .dvw-strip { grid-template-columns: 1fr 1fr 1fr; margin-top: 36px; }
    #dvw .dvw-strip a { padding: 18px 16px 18px 0; border-bottom: 1px solid var(--line); }
    #dvw .dvw-strip a + a { padding-left: 16px; }
    #dvw .dvw-strip a:nth-child(3n) { border-right: 0; }
    #dvw .dvw-strip a:nth-child(3n+1) { padding-left: 0; }
    #dvw .dvw-strip a:nth-child(n+4) { border-bottom: 0; }
    #dvw .dvw-strip b { font-size: 17px; }
    #dvw .dvw-sec { padding: 72px 0; }
    #dvw .dvw-show { padding: 80px 0 64px; }
    #dvw .dvw-show-head { text-align: left; margin-bottom: 28px; }
    #dvw .dvw-cols-3, #dvw .dvw-cols-4, #dvw .dvw-cols-5 { grid-template-columns: 1fr 1fr; gap: 24px; }
    #dvw .dvw-spec-row { grid-template-columns: 1fr; }
    #dvw .dvw-feat, #dvw .dvw-feat--flip { grid-template-columns: 1fr; gap: 30px; }
    #dvw .dvw-feat--flip .dvw-text { order: 0; }
    #dvw .dvw-text { position: static; }
    #dvw .du-recent { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
    #dvw .dvw-strip { grid-template-columns: 1fr 1fr; }
    #dvw .dvw-strip a:nth-child(n) { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 16px 14px 16px 0; }
    #dvw .dvw-strip a:nth-child(2n) { border-right: 0; padding-left: 14px; }
    #dvw .dvw-strip a:nth-child(2n+1) { padding-left: 0; }
    #dvw .dvw-strip a:nth-child(n+5) { border-bottom: 0; }
    #dvw .dvw-spec > div { grid-template-columns: 1fr; gap: 2px; }
    #dvw .dvw-duo, #dvw .dvw-wide.dvw-duo { grid-template-columns: 1fr; }
    #dvw .dvw-cols-3, #dvw .dvw-cols-4, #dvw .dvw-cols-5 { grid-template-columns: 1fr; }
    #dvw .dvw-lead { font-size: 16px; }
}