/* 9.0 折纸剧场：立体纸模型、鲜亮舞台与几何折面 */
:root {
    --iidao-sea: #49b9d5;
    --iidao-sea-dark: #12324a;
    --iidao-sea-soft: #79cddd;
    --iidao-glass: #8edce7;
    --iidao-glass-light: #dff5f5;
    --iidao-sand: #f4cf57;
    --iidao-cream: #f7f3e8;
    --iidao-coral: #f2785c;
    --iidao-coral-light: #ffd8ca;
    --iidao-ink: #18313d;
    --iidao-muted: #62747a;
    --iidao-line: #18313d;
    --iidao-shadow: 6px 6px 0 #18313d;
}
body { background: #f5f1e6; color: var(--iidao-ink); }
::selection { background: var(--iidao-sand); color: var(--iidao-sea-dark); }
h1, h2, h3, .iidao-brand-cn, .iidao-footer-brand strong { font-family: "PingFang SC", "Microsoft YaHei", sans-serif; font-weight: 900; letter-spacing: -.045em; }
.iidao-explorer-home { background: transparent; }
.iidao-eyebrow { display: inline-flex; margin-bottom: 18px; padding: 7px 14px; border: 0; background: var(--iidao-sand); clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%); color: var(--iidao-sea-dark); font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.iidao-eyebrow::before { display: none; }
.iidao-button, .iidao-btn { min-height: 50px; padding: 13px 22px; border: 2px solid var(--iidao-ink); border-radius: 0; background: var(--iidao-coral); box-shadow: 4px 4px 0 var(--iidao-ink); color: #fff; font-size: 12px; font-weight: 800; }
.iidao-button:hover, .iidao-btn:hover { background: var(--iidao-sand); box-shadow: 2px 2px 0 var(--iidao-ink); color: var(--iidao-ink); transform: translate(2px, 2px); }
.iidao-quiet-link { color: inherit; font-size: 12px; font-weight: 800; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 7px; }

/* 舞台顶栏 */
.iidao-header { top: 0; }
.iidao-header-inner { width: 100%; padding: 15px max(24px, calc((100vw - 1180px) / 2)); border: 0; border-bottom: 2px solid rgba(255,255,255,.18); border-radius: 0; background: var(--iidao-sea-dark); box-shadow: none; backdrop-filter: none; }
.iidao-header.is-solid .iidao-header-inner { border-bottom: 2px solid var(--iidao-ink); background: var(--iidao-cream); }
.iidao-brand { align-items: center; flex-direction: row; gap: 11px; }
.iidao-brand-logo { width: auto; max-width: 62px; height: 42px; object-fit: contain; }
.iidao-brand-copy { display: flex; flex-direction: column; line-height: 1; }
.iidao-brand-copy .iidao-brand-cn { color: #fff; font-size: 19px; letter-spacing: -.02em; white-space: nowrap; }
.iidao-header.is-solid .iidao-brand-copy .iidao-brand-cn { color: var(--iidao-ink); }
.iidao-brand-copy .iidao-brand-en { margin-top: 7px; color: var(--iidao-glass); font-size: 7px; font-weight: 800; letter-spacing: .2em; }
.iidao-header.is-solid .iidao-brand-copy .iidao-brand-en { color: #378ca4; }
.iidao-nav { gap: 25px; }
.iidao-nav a { padding: 6px 0; border-radius: 0; color: rgba(255,255,255,.78); font-size: 12px; font-weight: 700; }
.iidao-header.is-solid .iidao-nav a { color: var(--iidao-ink); }
.iidao-nav a:hover { background: transparent; color: var(--iidao-sand); }
.iidao-header-search { width: auto; height: auto; padding: 7px 11px; border: 2px solid var(--iidao-glass); border-radius: 0; background: transparent; box-shadow: none; color: #fff; font-size: 11px; font-weight: 800; }
.iidao-header.is-solid .iidao-header-search { border-color: var(--iidao-ink); color: var(--iidao-ink); }
.iidao-header-search:hover { background: var(--iidao-sand); color: var(--iidao-ink); }
.iidao-nav-toggle { border: 0; color: #fff; }
.iidao-header.is-solid .iidao-nav-toggle { color: var(--iidao-ink); }

/* 第一幕 */
.iidao-explorer-hero { position: relative; overflow: hidden; padding: 115px 0 45px; background: var(--iidao-sea-dark); color: #fff; }
.iidao-explorer-hero::before { position: absolute; right: -20px; bottom: -35px; color: rgba(255,255,255,.035); content: "ISLAND"; font-size: clamp(110px, 18vw, 240px); font-weight: 900; letter-spacing: -.08em; line-height: 1; pointer-events: none; }
.iidao-explorer-grid { position: relative; grid-template-columns: .75fr 1.25fr; gap: 25px; }
.iidao-explorer-intro { position: relative; z-index: 3; }
.iidao-explorer-intro h1 { max-width: 460px; margin-bottom: 20px; color: #fff; font-size: clamp(48px, 5.2vw, 68px); line-height: 1.18; text-shadow: none; }
.iidao-explorer-subtitle { max-width: 390px; color: #a9dce4; font-size: 14px; font-weight: 600; letter-spacing: .05em; line-height: 1.9; }
.iidao-explorer-actions { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 16px 24px; margin-top: 27px; }
.iidao-hero-ferry-status { position: relative; display: flex; grid-column: 1 / -1; align-items: center; gap: 14px; width: 100%; min-width: 0; min-height: 78px; padding: 13px 20px; border: 2px solid var(--iidao-ink); border-radius: 0; background: var(--iidao-sand); clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%); box-shadow: none; color: var(--iidao-ink); }
.iidao-hero-ferry-status::after { position: absolute; top: 0; right: 0; width: 22px; height: 22px; background: #d6a93e; content: ""; }
.iidao-hero-ferry-status > i { flex: 0 0 auto; width: 11px; height: 11px; border: 2px solid var(--iidao-ink); border-radius: 50%; background: #5fa779; box-shadow: none; }
.iidao-hero-status-copy { display: flex; flex-direction: column; gap: 4px; }
.iidao-hero-status-copy small { color: #705d25; font-size: 9px; font-weight: 800; letter-spacing: .18em; }
.iidao-hero-status-copy strong { color: var(--iidao-ink); font-size: 22px; font-weight: 900; }
.iidao-hero-ferry-status > b { margin-left: auto; color: var(--iidao-ink); font-size: 23px; }
.iidao-hero-ferry-status:hover { background: #fff; box-shadow: none; color: var(--iidao-ink); transform: translateY(-3px); }
.iidao-hero-ferry-status:hover small, .iidao-hero-ferry-status:hover strong, .iidao-hero-ferry-status:hover > b { color: var(--iidao-ink); }
.iidao-hero-ferry-status.is-suspended { background: var(--iidao-coral); box-shadow: none; }
.iidao-hero-ferry-status.is-suspended::after { background: #c95743; }
.iidao-hero-ferry-status.is-suspended > i { background: #fff; }
.iidao-island-now { margin-top: 28px; padding: 12px 0; border: 0; border-top: 1px solid rgba(255,255,255,.2); border-bottom: 1px solid rgba(255,255,255,.2); background: transparent; box-shadow: none; }
.iidao-island-now > a, .iidao-island-now > div { border: 0; background: transparent; color: #fff; }
.iidao-island-now small { color: #8edce7; }
.iidao-island-now strong { color: #fff; font-size: 12px; }
.iidao-island-now > a:hover { background: transparent; color: var(--iidao-sand); }
.iidao-explorer-film { height: 172px; margin-top: 24px; overflow: hidden; border: 2px solid #fff; border-radius: 0; background: #49b9d5; box-shadow: 7px 7px 0 var(--iidao-coral); transform: rotate(-1deg); }
.iidao-film-caption { background: rgba(18,50,74,.9); color: #fff; }
.iidao-play { border: 2px solid var(--iidao-sand); background: var(--iidao-sand); color: var(--iidao-ink); box-shadow: none; }

/* 可拖拽折纸舞台 */
.iidao-paper-theater { position: relative; z-index: 2; min-height: 610px; perspective: 1200px; }
.iidao-paper-topline { position: relative; z-index: 4; display: flex; justify-content: space-between; gap: 15px; padding: 0 8px; color: #a9dce4; font-size: 10px; font-weight: 800; }
.iidao-paper-topline span { letter-spacing: .16em; }
.iidao-paper-topline small { color: var(--iidao-sand); font-size: 11px; }
.iidao-paper-viewport { position: relative; min-height: 535px; cursor: grab; touch-action: pan-y; outline: none; }
.iidao-paper-viewport:focus-visible { outline: 2px dashed var(--iidao-sand); outline-offset: 4px; }
.iidao-paper-viewport.is-dragging { cursor: grabbing; }
.iidao-paper-model { width: 100%; height: 535px; overflow: visible; filter: drop-shadow(0 28px 20px rgba(0,0,0,.2)); transform: rotateX(var(--paper-tilt, 4deg)) rotateY(var(--paper-rotate, -4deg)) rotateZ(-2deg); transform-origin: 50% 55%; transform-style: preserve-3d; transition: transform .16s ease-out; will-change: transform; }
.iidao-paper-viewport.is-dragging .iidao-paper-model { transition: none; }
.iidao-paper-model-image { display: block; width: 100%; height: 100%; object-fit: contain; pointer-events: none; user-select: none; -webkit-user-drag: none; }
.iidao-scene-hotspot { position: absolute; top: var(--y); left: var(--x); z-index: 5; display: flex; align-items: center; gap: 6px; transform: translate(-50%, -50%); transition: transform .15s ease; }
.iidao-scene-hotspot i { display: grid; place-items: center; width: 37px; height: 37px; border: 2px solid var(--iidao-ink); border-radius: 0; background: #fff; box-shadow: 3px 3px 0 var(--iidao-ink); color: var(--iidao-ink); font-size: 13px; font-style: normal; font-weight: 900; }
.iidao-scene-hotspot span { padding: 6px 9px; border: 2px solid var(--iidao-ink); background: var(--iidao-sand); box-shadow: 3px 3px 0 var(--iidao-ink); color: var(--iidao-ink); font-size: 11px; font-weight: 900; white-space: nowrap; }
.iidao-scene-hotspot.is-tide span, .iidao-scene-hotspot.is-scenery span { background: #8edce7; }
.iidao-scene-hotspot.is-guides span, .iidao-scene-hotspot.is-yujiale span { background: #f2785c; color: #fff; }
.iidao-scene-hotspot.is-about span { background: #81b978; }
.iidao-scene-hotspot:hover { transform: translate(-50%, calc(-50% - 5px)); }
.iidao-paper-controls { position: absolute; right: 12px; bottom: 22px; z-index: 6; display: flex; align-items: center; gap: 10px; color: #a9dce4; font-size: 10px; }
.iidao-paper-controls button { display: grid; place-items: center; width: 34px; height: 34px; padding: 0; border: 2px solid #a9dce4; border-radius: 0; background: transparent; color: #fff; cursor: pointer; font-size: 18px; }
.iidao-paper-controls button:hover { border-color: var(--iidao-sand); background: var(--iidao-sand); color: var(--iidao-ink); }
.iidao-paper-label { position: absolute; bottom: 25px; left: 10px; color: #a9dce4; font-size: 10px; font-weight: 700; }
.iidao-paper-disclaimer { position: absolute; right: 10px; bottom: 0; color: #79a9b4; font-size: 8px; }

/* 换幕导航 */
.iidao-journey-bar { border-top: 2px solid var(--iidao-ink); border-bottom: 2px solid var(--iidao-ink); background: var(--iidao-sand); }
.iidao-journey-bar .iidao-container { min-height: 62px; border: 0; background: transparent; box-shadow: none; backdrop-filter: none; }
.iidao-journey-label { color: var(--iidao-ink); font-size: 12px; font-weight: 900; }
.iidao-journey-bar a { color: var(--iidao-ink); font-size: 11px; font-weight: 700; }
.iidao-journey-bar a:hover, .iidao-journey-bar a[aria-current="location"] { background: var(--iidao-ink); color: #fff; }
.iidao-explorer-deck { padding-top: 65px; }
.iidao-panel-heading h2 { color: var(--iidao-ink); font-size: clamp(36px, 4vw, 50px); line-height: 1.2; }
.iidao-panel-heading > p, .iidao-panel-heading > div > p:not(.iidao-eyebrow) { color: var(--iidao-muted); }
.iidao-welcome-grid { gap: 25px; }
.iidao-welcome-card { position: relative; min-height: 235px; padding: 27px; border: 2px solid var(--iidao-ink); border-radius: 0; clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%); box-shadow: none; }
.iidao-welcome-card::after { position: absolute; top: 0; right: 0; width: 22px; height: 22px; background: rgba(24,49,61,.18); content: ""; }
.iidao-welcome-card.is-sea { background: #8edce7; }
.iidao-welcome-card.is-sand { background: #f4cf57; }
.iidao-welcome-card.is-coral { background: #f2785c; }
.iidao-welcome-card > span { color: var(--iidao-ink); font-size: 11px; font-weight: 800; }
.iidao-welcome-card h3 { margin: 22px 0 12px; color: var(--iidao-ink); font-size: 24px; line-height: 1.35; }
.iidao-welcome-card p { color: #334e58; font-size: 12px; line-height: 1.8; }
.iidao-welcome-card i { color: var(--iidao-ink); font-size: 11px; font-style: normal; font-weight: 900; }
.iidao-welcome-card:hover { box-shadow: 6px 6px 0 var(--iidao-ink); transform: translate(-3px, -3px); }
.iidao-welcome-story { margin-top: 38px; border: 2px solid var(--iidao-ink); border-radius: 0; background: #fff; box-shadow: 6px 6px 0 var(--iidao-sea); }

/* 数据场景 */
.iidao-tide-section { background: #bce9ed; }
.iidao-weather-now { margin-bottom: 30px; padding: 25px 28px; border: 2px solid var(--iidao-ink); background: var(--iidao-ink); box-shadow: 6px 6px 0 var(--iidao-coral); color: #fff; }
.iidao-weather-now > header { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,.2); }
.iidao-weather-now h3 { margin: 6px 0 0; font-size: 28px; font-weight: 900; }
.iidao-weather-now > header > span { display: inline-flex; align-items: center; gap: 7px; padding: 7px 10px; background: var(--iidao-sand); color: var(--iidao-ink); font-size: 9px; font-weight: 800; white-space: nowrap; }
.iidao-weather-now > header > span i { width: 7px; height: 7px; border-radius: 50%; background: #3f8d61; }
.iidao-weather-now-grid { display: grid; grid-template-columns: repeat(3, 1fr); padding-top: 22px; }
.iidao-weather-now-grid > div { padding: 0 24px; border-left: 1px solid rgba(255,255,255,.2); }
.iidao-weather-now-grid > div:first-child { padding-left: 0; border-left: 0; }
.iidao-weather-now-grid small, .iidao-weather-now-grid strong, .iidao-weather-now-grid span { display: block; }
.iidao-weather-now-grid small { color: var(--iidao-cyan); font-size: 10px; font-weight: 800; }
.iidao-weather-now-grid strong { margin: 8px 0 5px; color: #fff; font-size: 30px; font-weight: 900; line-height: 1.25; }
.iidao-weather-now-grid span { color: rgba(255,255,255,.65); font-size: 9px; }
.iidao-tide-day, .iidao-ferry-status, .iidao-ferry-panel { border: 2px solid var(--iidao-ink); border-radius: 0; background: #fffdf5; box-shadow: 6px 6px 0 var(--iidao-ink); }
.iidao-tide-day:nth-child(2) { background: #fff4c7; }
.iidao-tide-day-head > strong { border: 2px solid var(--iidao-ink); border-radius: 0; background: var(--iidao-coral); color: #fff; font-weight: 800; }
.iidao-tide-day-head span { font-weight: 900; }
.iidao-tide-timeline li { border: 2px solid var(--iidao-ink); border-radius: 0; background: #fff; }
.iidao-tide-timeline li.is-low { background: #ffd8ca; }
.iidao-tide-timeline li::before { border: 2px solid var(--iidao-ink); background: #49b9d5; box-shadow: none; }
.iidao-tide-timeline strong { color: var(--iidao-coral); font-size: 17px; }
.iidao-safety-note { border: 2px solid var(--iidao-ink); border-radius: 0; background: #fff; }
.iidao-ferry-section { background: var(--iidao-sea-dark); color: #fff; }
.iidao-ferry-section .iidao-panel-heading h2, .iidao-ferry-section .iidao-panel-heading > div > p { color: #fff; }
.iidao-ferry-tabs { display: flex; gap: 10px; padding: 7px; border: 2px solid var(--iidao-ink); border-radius: 15px; background: #fff; box-shadow: 5px 5px 0 var(--iidao-coral); }
.iidao-ferry-tabs button { min-height: 48px; border: 2px solid transparent; border-radius: 9px; background: #f6f3ea; color: var(--iidao-ink); font-weight: 800; transition: background .18s ease, border-color .18s ease, transform .18s ease; }
.iidao-ferry-tabs button[aria-selected="true"] { border-color: var(--iidao-ink); background: var(--iidao-sand); box-shadow: 3px 3px 0 var(--iidao-ink); color: var(--iidao-ink); transform: translate(-1px, -1px); }
.iidao-ferry-tabs button:not([aria-selected="true"]):hover { border-color: var(--iidao-ink); background: var(--iidao-cyan); color: var(--iidao-ink); }
.iidao-ferry-tabs button:focus-visible { outline: 3px solid var(--iidao-cyan); outline-offset: 3px; }
.iidao-ferry-route { border: 0; border-bottom: 2px solid var(--iidao-ink); background: transparent; }
.iidao-ferry-route li { border: 2px solid var(--iidao-ink); border-radius: 0; background: #dff5f5; }
.iidao-port-contacts { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.iidao-port-contacts a { min-width: 0; padding: 23px; border: 2px solid var(--iidao-ink); border-radius: 12px; background: #fffdf5; box-shadow: 5px 5px 0 var(--iidao-coral); color: var(--iidao-ink); transition: transform .18s ease, background .18s ease; }
.iidao-port-contacts a span { color: var(--iidao-muted); font-weight: 700; }
.iidao-port-contacts a strong { color: var(--iidao-ink); font-size: clamp(18px, 1.8vw, 24px); white-space: nowrap; }
.iidao-port-contacts a i { color: #b84f3b; font-weight: 800; }
.iidao-port-contacts a:hover { background: var(--iidao-sand); color: var(--iidao-ink); transform: translate(-2px, -2px); }
.iidao-port-contacts a:hover span, .iidao-port-contacts a:hover strong, .iidao-port-contacts a:hover i { color: var(--iidao-ink); }
.iidao-port-contacts a:focus-visible { outline: 3px solid var(--iidao-cyan); outline-offset: 4px; }

/* 攻略与影像场景 */
.iidao-explore-guide-card { border: 2px solid var(--iidao-ink); border-radius: 0; background: #fff; box-shadow: 5px 5px 0 var(--iidao-sea); }
.iidao-explore-guide-card:nth-child(3n+2) { background: #fff4c7; box-shadow: 5px 5px 0 var(--iidao-coral); }
.iidao-explore-guide-card:nth-child(3n+3) { background: #dff5f5; }
.iidao-explore-guide-card h3 { color: var(--iidao-ink); font-size: 22px; line-height: 1.45; }
.iidao-guide-search, .iidao-search-form input { border: 2px solid var(--iidao-ink); border-radius: 0; background: #fff; box-shadow: 4px 4px 0 var(--iidao-sea); }
.iidao-guide-search { margin: 0 0 32px; }
.iidao-guide-search input { border: 2px solid var(--iidao-ink); border-radius: 0; background: #fffdf5; }
.iidao-guide-search input:focus { outline: 3px solid var(--iidao-cyan); outline-offset: 2px; background: #fff; }
.iidao-guide-search button, .iidao-search-form button { border: 0; border-radius: 0; background: var(--iidao-coral); font-weight: 800; }
.iidao-scenery-item > a { border: 2px solid var(--iidao-ink); border-radius: 0; box-shadow: 6px 6px 0 var(--iidao-sea); }
.iidao-scenery-caption { border: 0; border-top: 2px solid var(--iidao-ink); background: #fff; }
.iidao-scenery-caption h3 { font-size: 20px; }
.iidao-videos-section { background: var(--iidao-coral); color: #fff; }
.iidao-videos-section .iidao-panel-heading h2, .iidao-videos-section .iidao-panel-heading > div > p { color: #fff; }
.iidao-video-feature { border: 2px solid var(--iidao-ink); border-radius: 0; box-shadow: 7px 7px 0 var(--iidao-sand); }
.iidao-video-list article { border: 2px solid var(--iidao-ink); border-radius: 0; background: #fff; box-shadow: 4px 4px 0 var(--iidao-ink); color: var(--iidao-ink); }
.iidao-about-media img, .iidao-about-media .iidao-image-placeholder { border: 2px solid var(--iidao-ink); border-radius: 0; box-shadow: 7px 7px 0 var(--iidao-coral); }
.iidao-about-copy h2 { font-size: 43px; }
.iidao-about-stats { border: 2px solid var(--iidao-ink); border-radius: 0; background: var(--iidao-sand); box-shadow: 5px 5px 0 var(--iidao-ink); }

/* 内页 */
.iidao-guide-feature, .iidao-guide-card, .iidao-guide-item, .iidao-single-main, .iidao-no-results, .iidao-post-nav > div { border: 2px solid var(--iidao-ink); border-radius: 0; background: #fffdf5; box-shadow: 5px 5px 0 var(--iidao-sea); }
.iidao-pagination .page-numbers { border: 2px solid var(--iidao-ink); border-radius: 0; box-shadow: 2px 2px 0 var(--iidao-ink); }
.iidao-pagination .page-numbers.current { background: var(--iidao-sand); color: var(--iidao-ink); }

/* 舞台落幕页脚 */
.iidao-footer { position: relative; padding: 75px 0 28px; border: 0; border-top: 6px solid var(--iidao-sand); border-radius: 0; background: var(--iidao-sea-dark); color: rgba(255,255,255,.72); }
.iidao-footer::before { position: absolute; top: 18px; left: 0; width: 100%; height: 12px; background: linear-gradient(135deg, var(--iidao-coral) 25%, transparent 25%) 0 0 / 24px 12px repeat-x, linear-gradient(45deg, transparent 75%, var(--iidao-coral) 25%) 0 0 / 24px 12px repeat-x; content: ""; }
.iidao-footer-brand strong { color: var(--iidao-sand); font-size: 29px; text-shadow: none; }
.iidao-footer-brand span { color: #8edce7; font-weight: 700; }
.iidao-footer-grid { grid-template-columns: 1.25fr 1fr 1fr; gap: 0; }
.iidao-footer-grid > div { padding: 15px 30px; border: 0; border-left: 2px solid rgba(244,207,87,.35); border-radius: 0; background: transparent; box-shadow: none; color: #fff; }
.iidao-footer-grid > div:first-child { padding-left: 0; border-left: 0; }
.iidao-footer-grid h2 { margin-bottom: 16px; padding: 0; border: 0; background: transparent; box-shadow: none; color: var(--iidao-sand); font-size: 18px; font-weight: 900; }
.iidao-footer-grid a { border: 0; color: rgba(255,255,255,.8); font-weight: 700; }
.iidao-footer-grid a:hover { color: var(--iidao-sand); }
.iidao-footer-intro { color: rgba(255,255,255,.65); }
.iidao-footer-qr { padding: 14px; border: 2px solid var(--iidao-sand); border-radius: 0; background: transparent; box-shadow: 5px 5px 0 var(--iidao-coral); color: #fff; }
.iidao-footer-qr img { border: 3px solid #fff; border-radius: 0; }
.iidao-footer-bottom { border-top: 2px solid rgba(255,255,255,.15); }
.iidao-footer-legal a { color: #a9dce4; }
.iidao-footer-legal a:hover { color: var(--iidao-sand); }
.iidao-mobile-dock { border: 2px solid var(--iidao-ink) !important; border-radius: 0 !important; background: #fff !important; box-shadow: 4px 4px 0 var(--iidao-ink) !important; backdrop-filter: none !important; }

/* 关于我们与走进石城岛 · 全新纸签版式 */
.iidao-about-v2-hero, .iidao-island-v2-hero { display: grid; grid-template-columns: 1.05fr .95fr; gap: 65px; align-items: center; min-height: 690px; padding: 145px 0 75px; }
.iidao-about-v2-hero-copy h1, .iidao-island-v2-hero-copy h1 { margin: 20px 0; color: var(--iidao-ink); font-size: clamp(58px, 6.5vw, 94px); line-height: 1.02; font-weight: 900; letter-spacing: -.065em; text-shadow: none; }
.iidao-about-v2-hero-copy > p:last-of-type, .iidao-island-v2-hero-copy > p:last-of-type { max-width: 620px; color: var(--iidao-muted); font-size: 15px; line-height: 2; }
.iidao-about-v2-hero-copy .iidao-button { margin-top: 20px; }
.iidao-about-v2-manifesto { padding: 38px; background: var(--iidao-cyan); border: 2px solid var(--iidao-ink); box-shadow: 12px 12px 0 var(--iidao-coral); clip-path: polygon(0 0, calc(100% - 42px) 0, 100% 42px, 100% 100%, 0 100%); transform: rotate(1deg); }
.iidao-about-v2-manifesto > span { display: block; margin-top: 24px; padding-top: 18px; border-top: 1px solid rgba(24,49,61,.35); font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.iidao-about-v2-manifesto > span:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.iidao-about-v2-manifesto strong { display: block; margin: 9px 0; font-size: 39px; line-height: 1.2; font-weight: 900; }
.iidao-about-v2-manifesto small { display: block; margin-top: 35px; font-size: 10px; font-weight: 750; }
.iidao-about-v2-section-title, .iidao-island-v2-heading { display: grid; grid-template-columns: .65fr 1.35fr; gap: 35px; align-items: start; margin-bottom: 40px; }
.iidao-about-v2-section-title h2, .iidao-island-v2-heading h2, .iidao-about-v2-faq h2, .iidao-island-v2-day h2, .iidao-island-v2-departure h2, .iidao-about-v2-credit h2 { margin: 0; font-size: clamp(35px, 4vw, 55px); line-height: 1.15; font-weight: 900; letter-spacing: -.045em; }
.iidao-about-v2-principles { padding: 65px 0 90px; border-top: 2px solid var(--iidao-ink); }
.iidao-about-v2-principle-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.iidao-about-v2-principle-grid article { min-height: 270px; padding: 30px; border: 2px solid var(--iidao-ink); box-shadow: 7px 7px 0 var(--iidao-ink); clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%); }
.iidao-about-v2-principle-grid .is-cyan, .iidao-island-v2-tickets .is-cyan { background: #cdeff2; }.iidao-about-v2-principle-grid .is-coral, .iidao-island-v2-tickets .is-coral { background: #ffd9cd; }.iidao-about-v2-principle-grid .is-yellow, .iidao-island-v2-tickets .is-yellow { background: #ffedac; }.iidao-about-v2-principle-grid .is-green { background: #dcebcf; }
.iidao-about-v2-principle-grid article > span { font-size: 10px; font-weight: 850; letter-spacing: .08em; }.iidao-about-v2-principle-grid h3 { margin: 30px 0 13px; font-size: 29px; font-weight: 900; }.iidao-about-v2-principle-grid p { color: #40535d; font-size: 12px; line-height: 1.95; }
.iidao-about-v2-faq { display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; padding: 75px 0; border-top: 2px solid var(--iidao-ink); }
.iidao-about-v2-faq-intro h2 { margin: 18px 0; font-size: clamp(35px, 4vw, 55px); line-height: 1.15; font-weight: 900; letter-spacing: -.045em; }.iidao-about-v2-faq-intro > p:last-child { max-width: 420px; color: var(--iidao-muted); font-size: 12px; }
.iidao-about-v2-faq-list { border-top: 2px solid var(--iidao-ink); }
.iidao-about-v2-faq-list details { border-bottom: 1px solid var(--iidao-line); }
.iidao-about-v2-faq-list summary { display: grid; grid-template-columns: 48px 1fr 30px; gap: 16px; align-items: center; padding: 24px 0; cursor: pointer; list-style: none; }.iidao-about-v2-faq-list summary::-webkit-details-marker { display: none; }
.iidao-about-v2-faq-list summary > span { display: grid; width: 42px; height: 42px; place-items: center; background: var(--iidao-yellow); border: 1px solid var(--iidao-ink); font-size: 11px; font-weight: 850; }.iidao-about-v2-faq-list summary strong { font-size: 20px; font-weight: 850; }.iidao-about-v2-faq-list summary i { font-size: 23px; font-style: normal; text-align: center; transition: transform .18s ease; }.iidao-about-v2-faq-list details[open] summary i { transform: rotate(45deg); }.iidao-about-v2-faq-list details[open] summary > span { background: var(--iidao-cyan); }
.iidao-about-v2-faq-list details > div { padding: 0 35px 24px 64px; }.iidao-about-v2-faq-list details p { margin: 0 0 12px; color: var(--iidao-muted); font-size: 12px; }.iidao-about-v2-faq-list details a { display: inline-block; border-bottom: 1px solid; font-size: 11px; font-weight: 800; }
.iidao-about-v2-shortcuts { display: grid; grid-template-columns: repeat(4, 1fr); margin-bottom: 75px; background: var(--iidao-ink); color: #fff; border: 2px solid var(--iidao-ink); }
.iidao-about-v2-shortcuts a { position: relative; min-height: 145px; padding: 25px; }.iidao-about-v2-shortcuts a + a { border-left: 1px solid rgba(255,255,255,.2); }.iidao-about-v2-shortcuts small, .iidao-about-v2-shortcuts strong { display: block; }.iidao-about-v2-shortcuts small { color: var(--iidao-cyan); font-size: 10px; }.iidao-about-v2-shortcuts strong { margin-top: 25px; font-size: 22px; }.iidao-about-v2-shortcuts span { position: absolute; top: 22px; right: 22px; color: var(--iidao-yellow); }.iidao-about-v2-shortcuts a:hover { background: var(--iidao-blue); color: #fff; }
.iidao-about-v2-credit { display: grid; grid-template-columns: 1fr 1fr; gap: 65px; margin-bottom: 85px; padding: 45px; background: var(--iidao-yellow); border: 2px solid var(--iidao-ink); box-shadow: 10px 10px 0 var(--iidao-ink); clip-path: polygon(0 0, calc(100% - 35px) 0, 100% 35px, 100% 100%, 0 100%); }.iidao-about-v2-credit h2 { margin-top: 18px; font-size: 42px; }.iidao-about-v2-credit > div:last-child > p { font-size: 12px; }.iidao-about-v2-credit > div:last-child > p a { border-bottom: 1px solid; font-weight: 800; }
.iidao-island-v2-hero { grid-template-columns: .95fr 1.05fr; }
.iidao-island-v2-hero-links { display: flex; align-items: center; gap: 25px; margin-top: 25px; }.iidao-island-v2-hero-links > a:last-child { border-bottom: 1px solid; font-size: 12px; font-weight: 800; }
.iidao-island-v2-model { position: relative; padding: 40px 15px 25px; background: #bfe8ed; border: 2px solid var(--iidao-ink); box-shadow: 12px 12px 0 var(--iidao-blue); clip-path: polygon(0 0, calc(100% - 38px) 0, 100% 38px, 100% 100%, 0 100%); }
.iidao-island-v2-model img { display: block; width: 100%; max-height: 470px; object-fit: contain; }.iidao-island-v2-model-label, .iidao-island-v2-model-note { position: absolute; z-index: 2; padding: 8px 12px; background: var(--iidao-paper); border: 1px solid var(--iidao-ink); font-size: 9px; font-weight: 800; }.iidao-island-v2-model-label { top: 20px; left: -18px; }.iidao-island-v2-model-note { right: 20px; bottom: 18px; background: var(--iidao-yellow); }
.iidao-island-v2-stats { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0 0 80px; border: 2px solid var(--iidao-ink); box-shadow: 7px 7px 0 var(--iidao-ink); }.iidao-island-v2-stats > div { padding: 25px; background: #fff; }.iidao-island-v2-stats > div + div { border-left: 2px solid var(--iidao-ink); }.iidao-island-v2-stats dt { font-size: 32px; font-weight: 900; }.iidao-island-v2-stats dt small { margin-left: 4px; font-size: 12px; }.iidao-island-v2-stats dd { margin: 6px 0 0; color: var(--iidao-muted); font-size: 10px; }
.iidao-island-v2-faces { padding-bottom: 85px; }.iidao-island-v2-face-list { border-top: 2px solid var(--iidao-ink); }.iidao-island-v2-face-list article { display: grid; grid-template-columns: 70px 1fr 45px; gap: 25px; align-items: center; padding: 28px 0; border-bottom: 1px solid var(--iidao-line); }.iidao-island-v2-face-list article > span { color: var(--iidao-coral); font-size: 12px; font-weight: 850; }.iidao-island-v2-face-list h3 { margin: 0 0 8px; font-size: 27px; font-weight: 900; }.iidao-island-v2-face-list p { max-width: 850px; margin: 0; color: var(--iidao-muted); font-size: 12px; }.iidao-island-v2-face-list article > a { display: grid; width: 40px; height: 40px; place-items: center; border: 1px solid var(--iidao-ink); }.iidao-island-v2-face-list article > a:hover { background: var(--iidao-yellow); color: var(--iidao-ink); }
.iidao-island-v2-day { margin-bottom: 85px; padding: 45px; background: var(--iidao-ink); color: #fff; clip-path: polygon(0 0, calc(100% - 38px) 0, 100% 38px, 100% 100%, 0 100%); }.iidao-island-v2-day-title { display: grid; grid-template-columns: .55fr .8fr .65fr; gap: 30px; align-items: end; margin-bottom: 40px; }.iidao-island-v2-day-title h2 { font-size: 43px; }.iidao-island-v2-day-title > p:last-child { margin: 0; color: rgba(255,255,255,.68); font-size: 11px; }.iidao-island-v2-day-track { display: grid; grid-template-columns: repeat(4, 1fr); }.iidao-island-v2-day-track article { padding: 0 22px; border-left: 1px solid rgba(255,255,255,.2); }.iidao-island-v2-day-track article:first-child { padding-left: 0; border-left: 0; }.iidao-island-v2-day-track time { color: var(--iidao-yellow); font-size: 11px; font-weight: 800; }.iidao-island-v2-day-track h3 { margin: 15px 0 10px; font-size: 20px; }.iidao-island-v2-day-track p { color: rgba(255,255,255,.68); font-size: 10px; }
.iidao-island-v2-departure { padding-bottom: 85px; }.iidao-island-v2-departure > div:first-child { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 30px; }.iidao-island-v2-tickets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }.iidao-island-v2-tickets a { min-height: 245px; padding: 28px; border: 2px solid var(--iidao-ink); box-shadow: 7px 7px 0 var(--iidao-ink); clip-path: polygon(0 0, calc(100% - 25px) 0, 100% 25px, 100% 100%, 0 100%); }.iidao-island-v2-tickets span, .iidao-island-v2-tickets strong, .iidao-island-v2-tickets small, .iidao-island-v2-tickets b { display: block; }.iidao-island-v2-tickets span { font-size: 10px; font-weight: 850; }.iidao-island-v2-tickets strong { margin: 28px 0 12px; font-size: 24px; }.iidao-island-v2-tickets small { color: #40535d; font-size: 11px; }.iidao-island-v2-tickets b { margin-top: 25px; font-size: 11px; }
/* 内页折角：裁切区域补上真实纸折面 */
.iidao-about-v2-manifesto, .iidao-about-v2-principle-grid article, .iidao-about-v2-credit, .iidao-island-v2-model, .iidao-island-v2-day, .iidao-island-v2-tickets a { position: relative; }
.iidao-about-v2-manifesto::after, .iidao-about-v2-principle-grid article::after, .iidao-about-v2-credit::after, .iidao-island-v2-model::after, .iidao-island-v2-day::after, .iidao-island-v2-tickets a::after { position: absolute; top: 0; right: 0; width: var(--paper-fold-size, 23px); height: var(--paper-fold-size, 23px); background: var(--paper-fold-color, rgba(24,49,61,.2)); content: ""; pointer-events: none; }
.iidao-about-v2-manifesto { --paper-fold-size: 40px; --paper-fold-color: #2b9eb8; }
.iidao-about-v2-credit { --paper-fold-size: 33px; --paper-fold-color: #d6a93e; }
.iidao-island-v2-model { --paper-fold-size: 36px; --paper-fold-color: #8edce7; }
.iidao-island-v2-day { --paper-fold-size: 36px; --paper-fold-color: var(--iidao-sand); }
.iidao-page-custom { margin: 0 0 80px; padding: 35px; background: #fff; border: 2px solid var(--iidao-ink); }

/* 回到顶部纸签 */
.iidao-back-to-top { position: fixed; right: 26px; bottom: 26px; z-index: 1300; display: flex; align-items: center; justify-content: center; width: 58px; height: 62px; padding: 7px 0 5px; border: 2px solid var(--iidao-ink); border-radius: 0; background: var(--iidao-sand); box-shadow: 5px 5px 0 var(--iidao-coral); color: var(--iidao-ink); cursor: pointer; flex-direction: column; clip-path: polygon(0 0, calc(100% - 15px) 0, 100% 15px, 100% 100%, 0 100%); transition: transform .18s ease, background .18s ease; }
.iidao-back-to-top::after { position: absolute; top: 0; right: 0; width: 14px; height: 14px; background: #d6a93e; content: ""; }
.iidao-back-to-top span { font-size: 29px; font-weight: 900; line-height: 1; }
.iidao-back-to-top small { margin-top: 5px; font-size: 7px; font-weight: 900; letter-spacing: .16em; }
.iidao-back-to-top:hover { background: #fff; color: var(--iidao-ink); transform: translate(-2px, -3px); }
.iidao-back-to-top:focus-visible { outline: 3px solid var(--iidao-cyan); outline-offset: 4px; }
.iidao-back-to-top[hidden] { display: none; }

@media (max-width: 1100px) {
    .iidao-brand-copy .iidao-brand-en { display: none; }
    .iidao-nav { gap: 17px; margin-right: 18px; }
    .iidao-paper-theater { min-height: 560px; }
}
@media (max-width: 900px) {
    .iidao-header-inner, .iidao-header.is-solid .iidao-header-inner { padding: 14px 20px; }
    .iidao-nav { border: 2px solid var(--iidao-ink); background: #fff; box-shadow: 5px 5px 0 var(--iidao-coral); }
    .iidao-nav a { color: var(--iidao-ink); }
    .iidao-explorer-grid { grid-template-columns: 1fr; }
    .iidao-explorer-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 0 30px; }
    .iidao-explorer-intro > .iidao-eyebrow, .iidao-explorer-intro > h1, .iidao-explorer-intro > .iidao-explorer-subtitle, .iidao-explorer-intro > .iidao-explorer-actions, .iidao-island-now { grid-column: 1; }
    .iidao-explorer-film { grid-column: 2; grid-row: 1 / 6; height: auto; min-height: 390px; }
    .iidao-paper-theater { margin-top: 20px; }
    .iidao-port-contacts { grid-template-columns: 1fr; }
    .iidao-about-v2-hero, .iidao-island-v2-hero, .iidao-about-v2-faq { grid-template-columns: 1fr; min-height: auto; }
    .iidao-about-v2-hero, .iidao-island-v2-hero { gap: 45px; padding: 135px 0 60px; }
    .iidao-about-v2-section-title, .iidao-island-v2-heading, .iidao-about-v2-credit { grid-template-columns: 1fr; }
    .iidao-about-v2-faq { gap: 40px; }
    .iidao-about-v2-shortcuts, .iidao-island-v2-stats { grid-template-columns: repeat(2, 1fr); }
    .iidao-about-v2-shortcuts a:nth-child(3) { border-left: 0; }
    .iidao-about-v2-shortcuts a:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.2); }
    .iidao-island-v2-stats > div:nth-child(3) { border-left: 0; }
    .iidao-island-v2-stats > div:nth-child(n+3) { border-top: 2px solid var(--iidao-ink); }
    .iidao-island-v2-day-title { grid-template-columns: 1fr; align-items: start; }
    .iidao-island-v2-day-track { grid-template-columns: repeat(2, 1fr); gap: 30px 0; }
    .iidao-island-v2-day-track article:nth-child(3) { padding-left: 0; border-left: 0; }
    .iidao-island-v2-tickets { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
    .iidao-back-to-top { right: 14px; bottom: 18px; width: 50px; height: 54px; }
    .iidao-is-front-page .iidao-back-to-top { bottom: 88px; }
    .iidao-back-to-top span { font-size: 25px; }
    .iidao-weather-now { padding: 22px; }
    .iidao-weather-now > header { align-items: flex-start; flex-direction: column; }
    .iidao-weather-now-grid { grid-template-columns: 1fr; gap: 18px; }
    .iidao-weather-now-grid > div, .iidao-weather-now-grid > div:first-child { padding: 0 0 18px; border-bottom: 1px solid rgba(255,255,255,.2); border-left: 0; }
    .iidao-weather-now-grid > div:last-child { padding-bottom: 0; border-bottom: 0; }
    .iidao-weather-now-grid strong { font-size: 27px; }
    .iidao-brand-logo { max-width: 45px; height: 34px; }
    .iidao-brand-copy .iidao-brand-cn { font-size: 16px; }
    .iidao-explorer-intro { display: block; }
    .iidao-explorer-intro h1 { font-size: 43px; }
    .iidao-explorer-actions { grid-template-columns: 1fr auto; }
    .iidao-explorer-film { min-height: 0; height: 180px; margin-top: 25px; }
    .iidao-paper-theater { min-height: 490px; }
    .iidao-paper-viewport, .iidao-paper-model { min-height: 400px; height: 400px; }
    .iidao-scene-hotspot i { width: 30px; height: 30px; font-size: 11px; }
    .iidao-scene-hotspot span { padding: 4px 6px; font-size: 9px; }
    .iidao-paper-controls { right: 0; bottom: 20px; }
    .iidao-paper-controls span { display: none; }
    .iidao-paper-label { bottom: 28px; font-size: 8px; }
    .iidao-footer-grid { grid-template-columns: 1fr; }
    .iidao-footer-grid > div, .iidao-footer-grid > div:first-child { padding: 20px 0; border-left: 0; border-bottom: 1px solid rgba(255,255,255,.15); }
    .iidao-about-v2-hero-copy h1, .iidao-island-v2-hero-copy h1 { font-size: 48px; }
    .iidao-about-v2-manifesto { padding: 26px; }
    .iidao-about-v2-manifesto strong { font-size: 31px; }
    .iidao-about-v2-principle-grid, .iidao-about-v2-shortcuts { grid-template-columns: 1fr; }
    .iidao-about-v2-shortcuts a + a { border-top: 1px solid rgba(255,255,255,.2); border-left: 0; }
    .iidao-about-v2-credit { gap: 30px; padding: 28px; }
    .iidao-about-v2-credit h2 { font-size: 34px; }
    .iidao-about-v2-faq-list summary { grid-template-columns: 40px 1fr 24px; gap: 12px; }
    .iidao-about-v2-faq-list summary > span { width: 36px; height: 36px; }
    .iidao-about-v2-faq-list summary strong { font-size: 17px; }
    .iidao-about-v2-faq-list details > div { padding: 0 0 22px 52px; }
    .iidao-island-v2-model-label { left: 8px; }
    .iidao-island-v2-stats > div { padding: 18px 14px; }
    .iidao-island-v2-stats dt { font-size: 25px; }
    .iidao-island-v2-face-list article { grid-template-columns: 38px 1fr 32px; gap: 12px; }
    .iidao-island-v2-face-list h3 { font-size: 23px; }
    .iidao-island-v2-face-list article > a { width: 32px; height: 32px; }
    .iidao-island-v2-day { padding: 28px; }
    .iidao-island-v2-day-track { grid-template-columns: 1fr; gap: 25px; }
    .iidao-island-v2-day-track article, .iidao-island-v2-day-track article:nth-child(3) { padding: 0 0 0 18px; border-left: 1px solid rgba(255,255,255,.2); }
    .iidao-island-v2-departure > div:first-child { align-items: start; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
    .iidao-paper-model, .iidao-scene-hotspot { transition: none; }
}